File: | clang/lib/Sema/SemaExpr.cpp |
Warning: | line 9409, column 29 Called C++ object pointer is null |
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1 | //===--- SemaExpr.cpp - Semantic Analysis for Expressions -----------------===// | ||||||||
2 | // | ||||||||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||||||
4 | // See https://llvm.org/LICENSE.txt for license information. | ||||||||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||||||
6 | // | ||||||||
7 | //===----------------------------------------------------------------------===// | ||||||||
8 | // | ||||||||
9 | // This file implements semantic analysis for expressions. | ||||||||
10 | // | ||||||||
11 | //===----------------------------------------------------------------------===// | ||||||||
12 | |||||||||
13 | #include "TreeTransform.h" | ||||||||
14 | #include "UsedDeclVisitor.h" | ||||||||
15 | #include "clang/AST/ASTConsumer.h" | ||||||||
16 | #include "clang/AST/ASTContext.h" | ||||||||
17 | #include "clang/AST/ASTLambda.h" | ||||||||
18 | #include "clang/AST/ASTMutationListener.h" | ||||||||
19 | #include "clang/AST/CXXInheritance.h" | ||||||||
20 | #include "clang/AST/DeclObjC.h" | ||||||||
21 | #include "clang/AST/DeclTemplate.h" | ||||||||
22 | #include "clang/AST/EvaluatedExprVisitor.h" | ||||||||
23 | #include "clang/AST/Expr.h" | ||||||||
24 | #include "clang/AST/ExprCXX.h" | ||||||||
25 | #include "clang/AST/ExprObjC.h" | ||||||||
26 | #include "clang/AST/ExprOpenMP.h" | ||||||||
27 | #include "clang/AST/OperationKinds.h" | ||||||||
28 | #include "clang/AST/RecursiveASTVisitor.h" | ||||||||
29 | #include "clang/AST/TypeLoc.h" | ||||||||
30 | #include "clang/Basic/Builtins.h" | ||||||||
31 | #include "clang/Basic/PartialDiagnostic.h" | ||||||||
32 | #include "clang/Basic/SourceManager.h" | ||||||||
33 | #include "clang/Basic/TargetInfo.h" | ||||||||
34 | #include "clang/Lex/LiteralSupport.h" | ||||||||
35 | #include "clang/Lex/Preprocessor.h" | ||||||||
36 | #include "clang/Sema/AnalysisBasedWarnings.h" | ||||||||
37 | #include "clang/Sema/DeclSpec.h" | ||||||||
38 | #include "clang/Sema/DelayedDiagnostic.h" | ||||||||
39 | #include "clang/Sema/Designator.h" | ||||||||
40 | #include "clang/Sema/Initialization.h" | ||||||||
41 | #include "clang/Sema/Lookup.h" | ||||||||
42 | #include "clang/Sema/Overload.h" | ||||||||
43 | #include "clang/Sema/ParsedTemplate.h" | ||||||||
44 | #include "clang/Sema/Scope.h" | ||||||||
45 | #include "clang/Sema/ScopeInfo.h" | ||||||||
46 | #include "clang/Sema/SemaFixItUtils.h" | ||||||||
47 | #include "clang/Sema/SemaInternal.h" | ||||||||
48 | #include "clang/Sema/Template.h" | ||||||||
49 | #include "llvm/ADT/STLExtras.h" | ||||||||
50 | #include "llvm/ADT/StringExtras.h" | ||||||||
51 | #include "llvm/Support/ConvertUTF.h" | ||||||||
52 | #include "llvm/Support/SaveAndRestore.h" | ||||||||
53 | |||||||||
54 | using namespace clang; | ||||||||
55 | using namespace sema; | ||||||||
56 | using llvm::RoundingMode; | ||||||||
57 | |||||||||
58 | /// Determine whether the use of this declaration is valid, without | ||||||||
59 | /// emitting diagnostics. | ||||||||
60 | bool Sema::CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid) { | ||||||||
61 | // See if this is an auto-typed variable whose initializer we are parsing. | ||||||||
62 | if (ParsingInitForAutoVars.count(D)) | ||||||||
63 | return false; | ||||||||
64 | |||||||||
65 | // See if this is a deleted function. | ||||||||
66 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
67 | if (FD->isDeleted()) | ||||||||
68 | return false; | ||||||||
69 | |||||||||
70 | // If the function has a deduced return type, and we can't deduce it, | ||||||||
71 | // then we can't use it either. | ||||||||
72 | if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && | ||||||||
73 | DeduceReturnType(FD, SourceLocation(), /*Diagnose*/ false)) | ||||||||
74 | return false; | ||||||||
75 | |||||||||
76 | // See if this is an aligned allocation/deallocation function that is | ||||||||
77 | // unavailable. | ||||||||
78 | if (TreatUnavailableAsInvalid && | ||||||||
79 | isUnavailableAlignedAllocationFunction(*FD)) | ||||||||
80 | return false; | ||||||||
81 | } | ||||||||
82 | |||||||||
83 | // See if this function is unavailable. | ||||||||
84 | if (TreatUnavailableAsInvalid && D->getAvailability() == AR_Unavailable && | ||||||||
85 | cast<Decl>(CurContext)->getAvailability() != AR_Unavailable) | ||||||||
86 | return false; | ||||||||
87 | |||||||||
88 | if (isa<UnresolvedUsingIfExistsDecl>(D)) | ||||||||
89 | return false; | ||||||||
90 | |||||||||
91 | return true; | ||||||||
92 | } | ||||||||
93 | |||||||||
94 | static void DiagnoseUnusedOfDecl(Sema &S, NamedDecl *D, SourceLocation Loc) { | ||||||||
95 | // Warn if this is used but marked unused. | ||||||||
96 | if (const auto *A = D->getAttr<UnusedAttr>()) { | ||||||||
97 | // [[maybe_unused]] should not diagnose uses, but __attribute__((unused)) | ||||||||
98 | // should diagnose them. | ||||||||
99 | if (A->getSemanticSpelling() != UnusedAttr::CXX11_maybe_unused && | ||||||||
100 | A->getSemanticSpelling() != UnusedAttr::C2x_maybe_unused) { | ||||||||
101 | const Decl *DC = cast_or_null<Decl>(S.getCurObjCLexicalContext()); | ||||||||
102 | if (DC && !DC->hasAttr<UnusedAttr>()) | ||||||||
103 | S.Diag(Loc, diag::warn_used_but_marked_unused) << D; | ||||||||
104 | } | ||||||||
105 | } | ||||||||
106 | } | ||||||||
107 | |||||||||
108 | /// Emit a note explaining that this function is deleted. | ||||||||
109 | void Sema::NoteDeletedFunction(FunctionDecl *Decl) { | ||||||||
110 | assert(Decl && Decl->isDeleted())(static_cast <bool> (Decl && Decl->isDeleted ()) ? void (0) : __assert_fail ("Decl && Decl->isDeleted()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 110, __extension__ __PRETTY_FUNCTION__)); | ||||||||
111 | |||||||||
112 | if (Decl->isDefaulted()) { | ||||||||
113 | // If the method was explicitly defaulted, point at that declaration. | ||||||||
114 | if (!Decl->isImplicit()) | ||||||||
115 | Diag(Decl->getLocation(), diag::note_implicitly_deleted); | ||||||||
116 | |||||||||
117 | // Try to diagnose why this special member function was implicitly | ||||||||
118 | // deleted. This might fail, if that reason no longer applies. | ||||||||
119 | DiagnoseDeletedDefaultedFunction(Decl); | ||||||||
120 | return; | ||||||||
121 | } | ||||||||
122 | |||||||||
123 | auto *Ctor = dyn_cast<CXXConstructorDecl>(Decl); | ||||||||
124 | if (Ctor && Ctor->isInheritingConstructor()) | ||||||||
125 | return NoteDeletedInheritingConstructor(Ctor); | ||||||||
126 | |||||||||
127 | Diag(Decl->getLocation(), diag::note_availability_specified_here) | ||||||||
128 | << Decl << 1; | ||||||||
129 | } | ||||||||
130 | |||||||||
131 | /// Determine whether a FunctionDecl was ever declared with an | ||||||||
132 | /// explicit storage class. | ||||||||
133 | static bool hasAnyExplicitStorageClass(const FunctionDecl *D) { | ||||||||
134 | for (auto I : D->redecls()) { | ||||||||
135 | if (I->getStorageClass() != SC_None) | ||||||||
136 | return true; | ||||||||
137 | } | ||||||||
138 | return false; | ||||||||
139 | } | ||||||||
140 | |||||||||
141 | /// Check whether we're in an extern inline function and referring to a | ||||||||
142 | /// variable or function with internal linkage (C11 6.7.4p3). | ||||||||
143 | /// | ||||||||
144 | /// This is only a warning because we used to silently accept this code, but | ||||||||
145 | /// in many cases it will not behave correctly. This is not enabled in C++ mode | ||||||||
146 | /// because the restriction language is a bit weaker (C++11 [basic.def.odr]p6) | ||||||||
147 | /// and so while there may still be user mistakes, most of the time we can't | ||||||||
148 | /// prove that there are errors. | ||||||||
149 | static void diagnoseUseOfInternalDeclInInlineFunction(Sema &S, | ||||||||
150 | const NamedDecl *D, | ||||||||
151 | SourceLocation Loc) { | ||||||||
152 | // This is disabled under C++; there are too many ways for this to fire in | ||||||||
153 | // contexts where the warning is a false positive, or where it is technically | ||||||||
154 | // correct but benign. | ||||||||
155 | if (S.getLangOpts().CPlusPlus) | ||||||||
156 | return; | ||||||||
157 | |||||||||
158 | // Check if this is an inlined function or method. | ||||||||
159 | FunctionDecl *Current = S.getCurFunctionDecl(); | ||||||||
160 | if (!Current) | ||||||||
161 | return; | ||||||||
162 | if (!Current->isInlined()) | ||||||||
163 | return; | ||||||||
164 | if (!Current->isExternallyVisible()) | ||||||||
165 | return; | ||||||||
166 | |||||||||
167 | // Check if the decl has internal linkage. | ||||||||
168 | if (D->getFormalLinkage() != InternalLinkage) | ||||||||
169 | return; | ||||||||
170 | |||||||||
171 | // Downgrade from ExtWarn to Extension if | ||||||||
172 | // (1) the supposedly external inline function is in the main file, | ||||||||
173 | // and probably won't be included anywhere else. | ||||||||
174 | // (2) the thing we're referencing is a pure function. | ||||||||
175 | // (3) the thing we're referencing is another inline function. | ||||||||
176 | // This last can give us false negatives, but it's better than warning on | ||||||||
177 | // wrappers for simple C library functions. | ||||||||
178 | const FunctionDecl *UsedFn = dyn_cast<FunctionDecl>(D); | ||||||||
179 | bool DowngradeWarning = S.getSourceManager().isInMainFile(Loc); | ||||||||
180 | if (!DowngradeWarning && UsedFn) | ||||||||
181 | DowngradeWarning = UsedFn->isInlined() || UsedFn->hasAttr<ConstAttr>(); | ||||||||
182 | |||||||||
183 | S.Diag(Loc, DowngradeWarning ? diag::ext_internal_in_extern_inline_quiet | ||||||||
184 | : diag::ext_internal_in_extern_inline) | ||||||||
185 | << /*IsVar=*/!UsedFn << D; | ||||||||
186 | |||||||||
187 | S.MaybeSuggestAddingStaticToDecl(Current); | ||||||||
188 | |||||||||
189 | S.Diag(D->getCanonicalDecl()->getLocation(), diag::note_entity_declared_at) | ||||||||
190 | << D; | ||||||||
191 | } | ||||||||
192 | |||||||||
193 | void Sema::MaybeSuggestAddingStaticToDecl(const FunctionDecl *Cur) { | ||||||||
194 | const FunctionDecl *First = Cur->getFirstDecl(); | ||||||||
195 | |||||||||
196 | // Suggest "static" on the function, if possible. | ||||||||
197 | if (!hasAnyExplicitStorageClass(First)) { | ||||||||
198 | SourceLocation DeclBegin = First->getSourceRange().getBegin(); | ||||||||
199 | Diag(DeclBegin, diag::note_convert_inline_to_static) | ||||||||
200 | << Cur << FixItHint::CreateInsertion(DeclBegin, "static "); | ||||||||
201 | } | ||||||||
202 | } | ||||||||
203 | |||||||||
204 | /// Determine whether the use of this declaration is valid, and | ||||||||
205 | /// emit any corresponding diagnostics. | ||||||||
206 | /// | ||||||||
207 | /// This routine diagnoses various problems with referencing | ||||||||
208 | /// declarations that can occur when using a declaration. For example, | ||||||||
209 | /// it might warn if a deprecated or unavailable declaration is being | ||||||||
210 | /// used, or produce an error (and return true) if a C++0x deleted | ||||||||
211 | /// function is being used. | ||||||||
212 | /// | ||||||||
213 | /// \returns true if there was an error (this declaration cannot be | ||||||||
214 | /// referenced), false otherwise. | ||||||||
215 | /// | ||||||||
216 | bool Sema::DiagnoseUseOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, | ||||||||
217 | const ObjCInterfaceDecl *UnknownObjCClass, | ||||||||
218 | bool ObjCPropertyAccess, | ||||||||
219 | bool AvoidPartialAvailabilityChecks, | ||||||||
220 | ObjCInterfaceDecl *ClassReceiver) { | ||||||||
221 | SourceLocation Loc = Locs.front(); | ||||||||
222 | if (getLangOpts().CPlusPlus && isa<FunctionDecl>(D)) { | ||||||||
223 | // If there were any diagnostics suppressed by template argument deduction, | ||||||||
224 | // emit them now. | ||||||||
225 | auto Pos = SuppressedDiagnostics.find(D->getCanonicalDecl()); | ||||||||
226 | if (Pos != SuppressedDiagnostics.end()) { | ||||||||
227 | for (const PartialDiagnosticAt &Suppressed : Pos->second) | ||||||||
228 | Diag(Suppressed.first, Suppressed.second); | ||||||||
229 | |||||||||
230 | // Clear out the list of suppressed diagnostics, so that we don't emit | ||||||||
231 | // them again for this specialization. However, we don't obsolete this | ||||||||
232 | // entry from the table, because we want to avoid ever emitting these | ||||||||
233 | // diagnostics again. | ||||||||
234 | Pos->second.clear(); | ||||||||
235 | } | ||||||||
236 | |||||||||
237 | // C++ [basic.start.main]p3: | ||||||||
238 | // The function 'main' shall not be used within a program. | ||||||||
239 | if (cast<FunctionDecl>(D)->isMain()) | ||||||||
240 | Diag(Loc, diag::ext_main_used); | ||||||||
241 | |||||||||
242 | diagnoseUnavailableAlignedAllocation(*cast<FunctionDecl>(D), Loc); | ||||||||
243 | } | ||||||||
244 | |||||||||
245 | // See if this is an auto-typed variable whose initializer we are parsing. | ||||||||
246 | if (ParsingInitForAutoVars.count(D)) { | ||||||||
247 | if (isa<BindingDecl>(D)) { | ||||||||
248 | Diag(Loc, diag::err_binding_cannot_appear_in_own_initializer) | ||||||||
249 | << D->getDeclName(); | ||||||||
250 | } else { | ||||||||
251 | Diag(Loc, diag::err_auto_variable_cannot_appear_in_own_initializer) | ||||||||
252 | << D->getDeclName() << cast<VarDecl>(D)->getType(); | ||||||||
253 | } | ||||||||
254 | return true; | ||||||||
255 | } | ||||||||
256 | |||||||||
257 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
258 | // See if this is a deleted function. | ||||||||
259 | if (FD->isDeleted()) { | ||||||||
260 | auto *Ctor = dyn_cast<CXXConstructorDecl>(FD); | ||||||||
261 | if (Ctor && Ctor->isInheritingConstructor()) | ||||||||
262 | Diag(Loc, diag::err_deleted_inherited_ctor_use) | ||||||||
263 | << Ctor->getParent() | ||||||||
264 | << Ctor->getInheritedConstructor().getConstructor()->getParent(); | ||||||||
265 | else | ||||||||
266 | Diag(Loc, diag::err_deleted_function_use); | ||||||||
267 | NoteDeletedFunction(FD); | ||||||||
268 | return true; | ||||||||
269 | } | ||||||||
270 | |||||||||
271 | // [expr.prim.id]p4 | ||||||||
272 | // A program that refers explicitly or implicitly to a function with a | ||||||||
273 | // trailing requires-clause whose constraint-expression is not satisfied, | ||||||||
274 | // other than to declare it, is ill-formed. [...] | ||||||||
275 | // | ||||||||
276 | // See if this is a function with constraints that need to be satisfied. | ||||||||
277 | // Check this before deducing the return type, as it might instantiate the | ||||||||
278 | // definition. | ||||||||
279 | if (FD->getTrailingRequiresClause()) { | ||||||||
280 | ConstraintSatisfaction Satisfaction; | ||||||||
281 | if (CheckFunctionConstraints(FD, Satisfaction, Loc)) | ||||||||
282 | // A diagnostic will have already been generated (non-constant | ||||||||
283 | // constraint expression, for example) | ||||||||
284 | return true; | ||||||||
285 | if (!Satisfaction.IsSatisfied) { | ||||||||
286 | Diag(Loc, | ||||||||
287 | diag::err_reference_to_function_with_unsatisfied_constraints) | ||||||||
288 | << D; | ||||||||
289 | DiagnoseUnsatisfiedConstraint(Satisfaction); | ||||||||
290 | return true; | ||||||||
291 | } | ||||||||
292 | } | ||||||||
293 | |||||||||
294 | // If the function has a deduced return type, and we can't deduce it, | ||||||||
295 | // then we can't use it either. | ||||||||
296 | if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && | ||||||||
297 | DeduceReturnType(FD, Loc)) | ||||||||
298 | return true; | ||||||||
299 | |||||||||
300 | if (getLangOpts().CUDA && !CheckCUDACall(Loc, FD)) | ||||||||
301 | return true; | ||||||||
302 | |||||||||
303 | if (getLangOpts().SYCLIsDevice && !checkSYCLDeviceFunction(Loc, FD)) | ||||||||
304 | return true; | ||||||||
305 | } | ||||||||
306 | |||||||||
307 | if (auto *MD = dyn_cast<CXXMethodDecl>(D)) { | ||||||||
308 | // Lambdas are only default-constructible or assignable in C++2a onwards. | ||||||||
309 | if (MD->getParent()->isLambda() && | ||||||||
310 | ((isa<CXXConstructorDecl>(MD) && | ||||||||
311 | cast<CXXConstructorDecl>(MD)->isDefaultConstructor()) || | ||||||||
312 | MD->isCopyAssignmentOperator() || MD->isMoveAssignmentOperator())) { | ||||||||
313 | Diag(Loc, diag::warn_cxx17_compat_lambda_def_ctor_assign) | ||||||||
314 | << !isa<CXXConstructorDecl>(MD); | ||||||||
315 | } | ||||||||
316 | } | ||||||||
317 | |||||||||
318 | auto getReferencedObjCProp = [](const NamedDecl *D) -> | ||||||||
319 | const ObjCPropertyDecl * { | ||||||||
320 | if (const auto *MD = dyn_cast<ObjCMethodDecl>(D)) | ||||||||
321 | return MD->findPropertyDecl(); | ||||||||
322 | return nullptr; | ||||||||
323 | }; | ||||||||
324 | if (const ObjCPropertyDecl *ObjCPDecl = getReferencedObjCProp(D)) { | ||||||||
325 | if (diagnoseArgIndependentDiagnoseIfAttrs(ObjCPDecl, Loc)) | ||||||||
326 | return true; | ||||||||
327 | } else if (diagnoseArgIndependentDiagnoseIfAttrs(D, Loc)) { | ||||||||
328 | return true; | ||||||||
329 | } | ||||||||
330 | |||||||||
331 | // [OpenMP 4.0], 2.15 declare reduction Directive, Restrictions | ||||||||
332 | // Only the variables omp_in and omp_out are allowed in the combiner. | ||||||||
333 | // Only the variables omp_priv and omp_orig are allowed in the | ||||||||
334 | // initializer-clause. | ||||||||
335 | auto *DRD = dyn_cast<OMPDeclareReductionDecl>(CurContext); | ||||||||
336 | if (LangOpts.OpenMP && DRD && !CurContext->containsDecl(D) && | ||||||||
337 | isa<VarDecl>(D)) { | ||||||||
338 | Diag(Loc, diag::err_omp_wrong_var_in_declare_reduction) | ||||||||
339 | << getCurFunction()->HasOMPDeclareReductionCombiner; | ||||||||
340 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||||||
341 | return true; | ||||||||
342 | } | ||||||||
343 | |||||||||
344 | // [OpenMP 5.0], 2.19.7.3. declare mapper Directive, Restrictions | ||||||||
345 | // List-items in map clauses on this construct may only refer to the declared | ||||||||
346 | // variable var and entities that could be referenced by a procedure defined | ||||||||
347 | // at the same location | ||||||||
348 | if (LangOpts.OpenMP && isa<VarDecl>(D) && | ||||||||
349 | !isOpenMPDeclareMapperVarDeclAllowed(cast<VarDecl>(D))) { | ||||||||
350 | Diag(Loc, diag::err_omp_declare_mapper_wrong_var) | ||||||||
351 | << getOpenMPDeclareMapperVarName(); | ||||||||
352 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||||||
353 | return true; | ||||||||
354 | } | ||||||||
355 | |||||||||
356 | if (const auto *EmptyD = dyn_cast<UnresolvedUsingIfExistsDecl>(D)) { | ||||||||
357 | Diag(Loc, diag::err_use_of_empty_using_if_exists); | ||||||||
358 | Diag(EmptyD->getLocation(), diag::note_empty_using_if_exists_here); | ||||||||
359 | return true; | ||||||||
360 | } | ||||||||
361 | |||||||||
362 | DiagnoseAvailabilityOfDecl(D, Locs, UnknownObjCClass, ObjCPropertyAccess, | ||||||||
363 | AvoidPartialAvailabilityChecks, ClassReceiver); | ||||||||
364 | |||||||||
365 | DiagnoseUnusedOfDecl(*this, D, Loc); | ||||||||
366 | |||||||||
367 | diagnoseUseOfInternalDeclInInlineFunction(*this, D, Loc); | ||||||||
368 | |||||||||
369 | if (LangOpts.SYCLIsDevice || (LangOpts.OpenMP && LangOpts.OpenMPIsDevice)) { | ||||||||
370 | if (auto *VD = dyn_cast<ValueDecl>(D)) | ||||||||
371 | checkDeviceDecl(VD, Loc); | ||||||||
372 | |||||||||
373 | if (!Context.getTargetInfo().isTLSSupported()) | ||||||||
374 | if (const auto *VD = dyn_cast<VarDecl>(D)) | ||||||||
375 | if (VD->getTLSKind() != VarDecl::TLS_None) | ||||||||
376 | targetDiag(*Locs.begin(), diag::err_thread_unsupported); | ||||||||
377 | } | ||||||||
378 | |||||||||
379 | if (isa<ParmVarDecl>(D) && isa<RequiresExprBodyDecl>(D->getDeclContext()) && | ||||||||
380 | !isUnevaluatedContext()) { | ||||||||
381 | // C++ [expr.prim.req.nested] p3 | ||||||||
382 | // A local parameter shall only appear as an unevaluated operand | ||||||||
383 | // (Clause 8) within the constraint-expression. | ||||||||
384 | Diag(Loc, diag::err_requires_expr_parameter_referenced_in_evaluated_context) | ||||||||
385 | << D; | ||||||||
386 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||||||
387 | return true; | ||||||||
388 | } | ||||||||
389 | |||||||||
390 | return false; | ||||||||
391 | } | ||||||||
392 | |||||||||
393 | /// DiagnoseSentinelCalls - This routine checks whether a call or | ||||||||
394 | /// message-send is to a declaration with the sentinel attribute, and | ||||||||
395 | /// if so, it checks that the requirements of the sentinel are | ||||||||
396 | /// satisfied. | ||||||||
397 | void Sema::DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, | ||||||||
398 | ArrayRef<Expr *> Args) { | ||||||||
399 | const SentinelAttr *attr = D->getAttr<SentinelAttr>(); | ||||||||
400 | if (!attr) | ||||||||
401 | return; | ||||||||
402 | |||||||||
403 | // The number of formal parameters of the declaration. | ||||||||
404 | unsigned numFormalParams; | ||||||||
405 | |||||||||
406 | // The kind of declaration. This is also an index into a %select in | ||||||||
407 | // the diagnostic. | ||||||||
408 | enum CalleeType { CT_Function, CT_Method, CT_Block } calleeType; | ||||||||
409 | |||||||||
410 | if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { | ||||||||
411 | numFormalParams = MD->param_size(); | ||||||||
412 | calleeType = CT_Method; | ||||||||
413 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
414 | numFormalParams = FD->param_size(); | ||||||||
415 | calleeType = CT_Function; | ||||||||
416 | } else if (isa<VarDecl>(D)) { | ||||||||
417 | QualType type = cast<ValueDecl>(D)->getType(); | ||||||||
418 | const FunctionType *fn = nullptr; | ||||||||
419 | if (const PointerType *ptr = type->getAs<PointerType>()) { | ||||||||
420 | fn = ptr->getPointeeType()->getAs<FunctionType>(); | ||||||||
421 | if (!fn) return; | ||||||||
422 | calleeType = CT_Function; | ||||||||
423 | } else if (const BlockPointerType *ptr = type->getAs<BlockPointerType>()) { | ||||||||
424 | fn = ptr->getPointeeType()->castAs<FunctionType>(); | ||||||||
425 | calleeType = CT_Block; | ||||||||
426 | } else { | ||||||||
427 | return; | ||||||||
428 | } | ||||||||
429 | |||||||||
430 | if (const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(fn)) { | ||||||||
431 | numFormalParams = proto->getNumParams(); | ||||||||
432 | } else { | ||||||||
433 | numFormalParams = 0; | ||||||||
434 | } | ||||||||
435 | } else { | ||||||||
436 | return; | ||||||||
437 | } | ||||||||
438 | |||||||||
439 | // "nullPos" is the number of formal parameters at the end which | ||||||||
440 | // effectively count as part of the variadic arguments. This is | ||||||||
441 | // useful if you would prefer to not have *any* formal parameters, | ||||||||
442 | // but the language forces you to have at least one. | ||||||||
443 | unsigned nullPos = attr->getNullPos(); | ||||||||
444 | assert((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel")(static_cast <bool> ((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel") ? void (0) : __assert_fail ("(nullPos == 0 || nullPos == 1) && \"invalid null position on sentinel\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 444, __extension__ __PRETTY_FUNCTION__)); | ||||||||
445 | numFormalParams = (nullPos > numFormalParams ? 0 : numFormalParams - nullPos); | ||||||||
446 | |||||||||
447 | // The number of arguments which should follow the sentinel. | ||||||||
448 | unsigned numArgsAfterSentinel = attr->getSentinel(); | ||||||||
449 | |||||||||
450 | // If there aren't enough arguments for all the formal parameters, | ||||||||
451 | // the sentinel, and the args after the sentinel, complain. | ||||||||
452 | if (Args.size() < numFormalParams + numArgsAfterSentinel + 1) { | ||||||||
453 | Diag(Loc, diag::warn_not_enough_argument) << D->getDeclName(); | ||||||||
454 | Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); | ||||||||
455 | return; | ||||||||
456 | } | ||||||||
457 | |||||||||
458 | // Otherwise, find the sentinel expression. | ||||||||
459 | Expr *sentinelExpr = Args[Args.size() - numArgsAfterSentinel - 1]; | ||||||||
460 | if (!sentinelExpr) return; | ||||||||
461 | if (sentinelExpr->isValueDependent()) return; | ||||||||
462 | if (Context.isSentinelNullExpr(sentinelExpr)) return; | ||||||||
463 | |||||||||
464 | // Pick a reasonable string to insert. Optimistically use 'nil', 'nullptr', | ||||||||
465 | // or 'NULL' if those are actually defined in the context. Only use | ||||||||
466 | // 'nil' for ObjC methods, where it's much more likely that the | ||||||||
467 | // variadic arguments form a list of object pointers. | ||||||||
468 | SourceLocation MissingNilLoc = getLocForEndOfToken(sentinelExpr->getEndLoc()); | ||||||||
469 | std::string NullValue; | ||||||||
470 | if (calleeType == CT_Method && PP.isMacroDefined("nil")) | ||||||||
471 | NullValue = "nil"; | ||||||||
472 | else if (getLangOpts().CPlusPlus11) | ||||||||
473 | NullValue = "nullptr"; | ||||||||
474 | else if (PP.isMacroDefined("NULL")) | ||||||||
475 | NullValue = "NULL"; | ||||||||
476 | else | ||||||||
477 | NullValue = "(void*) 0"; | ||||||||
478 | |||||||||
479 | if (MissingNilLoc.isInvalid()) | ||||||||
480 | Diag(Loc, diag::warn_missing_sentinel) << int(calleeType); | ||||||||
481 | else | ||||||||
482 | Diag(MissingNilLoc, diag::warn_missing_sentinel) | ||||||||
483 | << int(calleeType) | ||||||||
484 | << FixItHint::CreateInsertion(MissingNilLoc, ", " + NullValue); | ||||||||
485 | Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); | ||||||||
486 | } | ||||||||
487 | |||||||||
488 | SourceRange Sema::getExprRange(Expr *E) const { | ||||||||
489 | return E ? E->getSourceRange() : SourceRange(); | ||||||||
490 | } | ||||||||
491 | |||||||||
492 | //===----------------------------------------------------------------------===// | ||||||||
493 | // Standard Promotions and Conversions | ||||||||
494 | //===----------------------------------------------------------------------===// | ||||||||
495 | |||||||||
496 | /// DefaultFunctionArrayConversion (C99 6.3.2.1p3, C99 6.3.2.1p4). | ||||||||
497 | ExprResult Sema::DefaultFunctionArrayConversion(Expr *E, bool Diagnose) { | ||||||||
498 | // Handle any placeholder expressions which made it here. | ||||||||
499 | if (E->getType()->isPlaceholderType()) { | ||||||||
500 | ExprResult result = CheckPlaceholderExpr(E); | ||||||||
501 | if (result.isInvalid()) return ExprError(); | ||||||||
502 | E = result.get(); | ||||||||
503 | } | ||||||||
504 | |||||||||
505 | QualType Ty = E->getType(); | ||||||||
506 | assert(!Ty.isNull() && "DefaultFunctionArrayConversion - missing type")(static_cast <bool> (!Ty.isNull() && "DefaultFunctionArrayConversion - missing type" ) ? void (0) : __assert_fail ("!Ty.isNull() && \"DefaultFunctionArrayConversion - missing type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 506, __extension__ __PRETTY_FUNCTION__)); | ||||||||
507 | |||||||||
508 | if (Ty->isFunctionType()) { | ||||||||
509 | if (auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts())) | ||||||||
510 | if (auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl())) | ||||||||
511 | if (!checkAddressOfFunctionIsAvailable(FD, Diagnose, E->getExprLoc())) | ||||||||
512 | return ExprError(); | ||||||||
513 | |||||||||
514 | E = ImpCastExprToType(E, Context.getPointerType(Ty), | ||||||||
515 | CK_FunctionToPointerDecay).get(); | ||||||||
516 | } else if (Ty->isArrayType()) { | ||||||||
517 | // In C90 mode, arrays only promote to pointers if the array expression is | ||||||||
518 | // an lvalue. The relevant legalese is C90 6.2.2.1p3: "an lvalue that has | ||||||||
519 | // type 'array of type' is converted to an expression that has type 'pointer | ||||||||
520 | // to type'...". In C99 this was changed to: C99 6.3.2.1p3: "an expression | ||||||||
521 | // that has type 'array of type' ...". The relevant change is "an lvalue" | ||||||||
522 | // (C90) to "an expression" (C99). | ||||||||
523 | // | ||||||||
524 | // C++ 4.2p1: | ||||||||
525 | // An lvalue or rvalue of type "array of N T" or "array of unknown bound of | ||||||||
526 | // T" can be converted to an rvalue of type "pointer to T". | ||||||||
527 | // | ||||||||
528 | if (getLangOpts().C99 || getLangOpts().CPlusPlus || E->isLValue()) { | ||||||||
529 | ExprResult Res = ImpCastExprToType(E, Context.getArrayDecayedType(Ty), | ||||||||
530 | CK_ArrayToPointerDecay); | ||||||||
531 | if (Res.isInvalid()) | ||||||||
532 | return ExprError(); | ||||||||
533 | E = Res.get(); | ||||||||
534 | } | ||||||||
535 | } | ||||||||
536 | return E; | ||||||||
537 | } | ||||||||
538 | |||||||||
539 | static void CheckForNullPointerDereference(Sema &S, Expr *E) { | ||||||||
540 | // Check to see if we are dereferencing a null pointer. If so, | ||||||||
541 | // and if not volatile-qualified, this is undefined behavior that the | ||||||||
542 | // optimizer will delete, so warn about it. People sometimes try to use this | ||||||||
543 | // to get a deterministic trap and are surprised by clang's behavior. This | ||||||||
544 | // only handles the pattern "*null", which is a very syntactic check. | ||||||||
545 | const auto *UO = dyn_cast<UnaryOperator>(E->IgnoreParenCasts()); | ||||||||
546 | if (UO && UO->getOpcode() == UO_Deref && | ||||||||
547 | UO->getSubExpr()->getType()->isPointerType()) { | ||||||||
548 | const LangAS AS = | ||||||||
549 | UO->getSubExpr()->getType()->getPointeeType().getAddressSpace(); | ||||||||
550 | if ((!isTargetAddressSpace(AS) || | ||||||||
551 | (isTargetAddressSpace(AS) && toTargetAddressSpace(AS) == 0)) && | ||||||||
552 | UO->getSubExpr()->IgnoreParenCasts()->isNullPointerConstant( | ||||||||
553 | S.Context, Expr::NPC_ValueDependentIsNotNull) && | ||||||||
554 | !UO->getType().isVolatileQualified()) { | ||||||||
555 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, | ||||||||
556 | S.PDiag(diag::warn_indirection_through_null) | ||||||||
557 | << UO->getSubExpr()->getSourceRange()); | ||||||||
558 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, | ||||||||
559 | S.PDiag(diag::note_indirection_through_null)); | ||||||||
560 | } | ||||||||
561 | } | ||||||||
562 | } | ||||||||
563 | |||||||||
564 | static void DiagnoseDirectIsaAccess(Sema &S, const ObjCIvarRefExpr *OIRE, | ||||||||
565 | SourceLocation AssignLoc, | ||||||||
566 | const Expr* RHS) { | ||||||||
567 | const ObjCIvarDecl *IV = OIRE->getDecl(); | ||||||||
568 | if (!IV) | ||||||||
569 | return; | ||||||||
570 | |||||||||
571 | DeclarationName MemberName = IV->getDeclName(); | ||||||||
572 | IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); | ||||||||
573 | if (!Member || !Member->isStr("isa")) | ||||||||
574 | return; | ||||||||
575 | |||||||||
576 | const Expr *Base = OIRE->getBase(); | ||||||||
577 | QualType BaseType = Base->getType(); | ||||||||
578 | if (OIRE->isArrow()) | ||||||||
579 | BaseType = BaseType->getPointeeType(); | ||||||||
580 | if (const ObjCObjectType *OTy = BaseType->getAs<ObjCObjectType>()) | ||||||||
581 | if (ObjCInterfaceDecl *IDecl = OTy->getInterface()) { | ||||||||
582 | ObjCInterfaceDecl *ClassDeclared = nullptr; | ||||||||
583 | ObjCIvarDecl *IV = IDecl->lookupInstanceVariable(Member, ClassDeclared); | ||||||||
584 | if (!ClassDeclared->getSuperClass() | ||||||||
585 | && (*ClassDeclared->ivar_begin()) == IV) { | ||||||||
586 | if (RHS) { | ||||||||
587 | NamedDecl *ObjectSetClass = | ||||||||
588 | S.LookupSingleName(S.TUScope, | ||||||||
589 | &S.Context.Idents.get("object_setClass"), | ||||||||
590 | SourceLocation(), S.LookupOrdinaryName); | ||||||||
591 | if (ObjectSetClass) { | ||||||||
592 | SourceLocation RHSLocEnd = S.getLocForEndOfToken(RHS->getEndLoc()); | ||||||||
593 | S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_assign) | ||||||||
594 | << FixItHint::CreateInsertion(OIRE->getBeginLoc(), | ||||||||
595 | "object_setClass(") | ||||||||
596 | << FixItHint::CreateReplacement( | ||||||||
597 | SourceRange(OIRE->getOpLoc(), AssignLoc), ",") | ||||||||
598 | << FixItHint::CreateInsertion(RHSLocEnd, ")"); | ||||||||
599 | } | ||||||||
600 | else | ||||||||
601 | S.Diag(OIRE->getLocation(), diag::warn_objc_isa_assign); | ||||||||
602 | } else { | ||||||||
603 | NamedDecl *ObjectGetClass = | ||||||||
604 | S.LookupSingleName(S.TUScope, | ||||||||
605 | &S.Context.Idents.get("object_getClass"), | ||||||||
606 | SourceLocation(), S.LookupOrdinaryName); | ||||||||
607 | if (ObjectGetClass) | ||||||||
608 | S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_use) | ||||||||
609 | << FixItHint::CreateInsertion(OIRE->getBeginLoc(), | ||||||||
610 | "object_getClass(") | ||||||||
611 | << FixItHint::CreateReplacement( | ||||||||
612 | SourceRange(OIRE->getOpLoc(), OIRE->getEndLoc()), ")"); | ||||||||
613 | else | ||||||||
614 | S.Diag(OIRE->getLocation(), diag::warn_objc_isa_use); | ||||||||
615 | } | ||||||||
616 | S.Diag(IV->getLocation(), diag::note_ivar_decl); | ||||||||
617 | } | ||||||||
618 | } | ||||||||
619 | } | ||||||||
620 | |||||||||
621 | ExprResult Sema::DefaultLvalueConversion(Expr *E) { | ||||||||
622 | // Handle any placeholder expressions which made it here. | ||||||||
623 | if (E->getType()->isPlaceholderType()) { | ||||||||
624 | ExprResult result = CheckPlaceholderExpr(E); | ||||||||
625 | if (result.isInvalid()) return ExprError(); | ||||||||
626 | E = result.get(); | ||||||||
627 | } | ||||||||
628 | |||||||||
629 | // C++ [conv.lval]p1: | ||||||||
630 | // A glvalue of a non-function, non-array type T can be | ||||||||
631 | // converted to a prvalue. | ||||||||
632 | if (!E->isGLValue()) return E; | ||||||||
633 | |||||||||
634 | QualType T = E->getType(); | ||||||||
635 | assert(!T.isNull() && "r-value conversion on typeless expression?")(static_cast <bool> (!T.isNull() && "r-value conversion on typeless expression?" ) ? void (0) : __assert_fail ("!T.isNull() && \"r-value conversion on typeless expression?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 635, __extension__ __PRETTY_FUNCTION__)); | ||||||||
636 | |||||||||
637 | // lvalue-to-rvalue conversion cannot be applied to function or array types. | ||||||||
638 | if (T->isFunctionType() || T->isArrayType()) | ||||||||
639 | return E; | ||||||||
640 | |||||||||
641 | // We don't want to throw lvalue-to-rvalue casts on top of | ||||||||
642 | // expressions of certain types in C++. | ||||||||
643 | if (getLangOpts().CPlusPlus && | ||||||||
644 | (E->getType() == Context.OverloadTy || | ||||||||
645 | T->isDependentType() || | ||||||||
646 | T->isRecordType())) | ||||||||
647 | return E; | ||||||||
648 | |||||||||
649 | // The C standard is actually really unclear on this point, and | ||||||||
650 | // DR106 tells us what the result should be but not why. It's | ||||||||
651 | // generally best to say that void types just doesn't undergo | ||||||||
652 | // lvalue-to-rvalue at all. Note that expressions of unqualified | ||||||||
653 | // 'void' type are never l-values, but qualified void can be. | ||||||||
654 | if (T->isVoidType()) | ||||||||
655 | return E; | ||||||||
656 | |||||||||
657 | // OpenCL usually rejects direct accesses to values of 'half' type. | ||||||||
658 | if (getLangOpts().OpenCL && | ||||||||
659 | !getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()) && | ||||||||
660 | T->isHalfType()) { | ||||||||
661 | Diag(E->getExprLoc(), diag::err_opencl_half_load_store) | ||||||||
662 | << 0 << T; | ||||||||
663 | return ExprError(); | ||||||||
664 | } | ||||||||
665 | |||||||||
666 | CheckForNullPointerDereference(*this, E); | ||||||||
667 | if (const ObjCIsaExpr *OISA = dyn_cast<ObjCIsaExpr>(E->IgnoreParenCasts())) { | ||||||||
668 | NamedDecl *ObjectGetClass = LookupSingleName(TUScope, | ||||||||
669 | &Context.Idents.get("object_getClass"), | ||||||||
670 | SourceLocation(), LookupOrdinaryName); | ||||||||
671 | if (ObjectGetClass) | ||||||||
672 | Diag(E->getExprLoc(), diag::warn_objc_isa_use) | ||||||||
673 | << FixItHint::CreateInsertion(OISA->getBeginLoc(), "object_getClass(") | ||||||||
674 | << FixItHint::CreateReplacement( | ||||||||
675 | SourceRange(OISA->getOpLoc(), OISA->getIsaMemberLoc()), ")"); | ||||||||
676 | else | ||||||||
677 | Diag(E->getExprLoc(), diag::warn_objc_isa_use); | ||||||||
678 | } | ||||||||
679 | else if (const ObjCIvarRefExpr *OIRE = | ||||||||
680 | dyn_cast<ObjCIvarRefExpr>(E->IgnoreParenCasts())) | ||||||||
681 | DiagnoseDirectIsaAccess(*this, OIRE, SourceLocation(), /* Expr*/nullptr); | ||||||||
682 | |||||||||
683 | // C++ [conv.lval]p1: | ||||||||
684 | // [...] If T is a non-class type, the type of the prvalue is the | ||||||||
685 | // cv-unqualified version of T. Otherwise, the type of the | ||||||||
686 | // rvalue is T. | ||||||||
687 | // | ||||||||
688 | // C99 6.3.2.1p2: | ||||||||
689 | // If the lvalue has qualified type, the value has the unqualified | ||||||||
690 | // version of the type of the lvalue; otherwise, the value has the | ||||||||
691 | // type of the lvalue. | ||||||||
692 | if (T.hasQualifiers()) | ||||||||
693 | T = T.getUnqualifiedType(); | ||||||||
694 | |||||||||
695 | // Under the MS ABI, lock down the inheritance model now. | ||||||||
696 | if (T->isMemberPointerType() && | ||||||||
697 | Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||||||
698 | (void)isCompleteType(E->getExprLoc(), T); | ||||||||
699 | |||||||||
700 | ExprResult Res = CheckLValueToRValueConversionOperand(E); | ||||||||
701 | if (Res.isInvalid()) | ||||||||
702 | return Res; | ||||||||
703 | E = Res.get(); | ||||||||
704 | |||||||||
705 | // Loading a __weak object implicitly retains the value, so we need a cleanup to | ||||||||
706 | // balance that. | ||||||||
707 | if (E->getType().getObjCLifetime() == Qualifiers::OCL_Weak) | ||||||||
708 | Cleanup.setExprNeedsCleanups(true); | ||||||||
709 | |||||||||
710 | if (E->getType().isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||||||
711 | Cleanup.setExprNeedsCleanups(true); | ||||||||
712 | |||||||||
713 | // C++ [conv.lval]p3: | ||||||||
714 | // If T is cv std::nullptr_t, the result is a null pointer constant. | ||||||||
715 | CastKind CK = T->isNullPtrType() ? CK_NullToPointer : CK_LValueToRValue; | ||||||||
716 | Res = ImplicitCastExpr::Create(Context, T, CK, E, nullptr, VK_PRValue, | ||||||||
717 | CurFPFeatureOverrides()); | ||||||||
718 | |||||||||
719 | // C11 6.3.2.1p2: | ||||||||
720 | // ... if the lvalue has atomic type, the value has the non-atomic version | ||||||||
721 | // of the type of the lvalue ... | ||||||||
722 | if (const AtomicType *Atomic = T->getAs<AtomicType>()) { | ||||||||
723 | T = Atomic->getValueType().getUnqualifiedType(); | ||||||||
724 | Res = ImplicitCastExpr::Create(Context, T, CK_AtomicToNonAtomic, Res.get(), | ||||||||
725 | nullptr, VK_PRValue, FPOptionsOverride()); | ||||||||
726 | } | ||||||||
727 | |||||||||
728 | return Res; | ||||||||
729 | } | ||||||||
730 | |||||||||
731 | ExprResult Sema::DefaultFunctionArrayLvalueConversion(Expr *E, bool Diagnose) { | ||||||||
732 | ExprResult Res = DefaultFunctionArrayConversion(E, Diagnose); | ||||||||
733 | if (Res.isInvalid()) | ||||||||
734 | return ExprError(); | ||||||||
735 | Res = DefaultLvalueConversion(Res.get()); | ||||||||
736 | if (Res.isInvalid()) | ||||||||
737 | return ExprError(); | ||||||||
738 | return Res; | ||||||||
739 | } | ||||||||
740 | |||||||||
741 | /// CallExprUnaryConversions - a special case of an unary conversion | ||||||||
742 | /// performed on a function designator of a call expression. | ||||||||
743 | ExprResult Sema::CallExprUnaryConversions(Expr *E) { | ||||||||
744 | QualType Ty = E->getType(); | ||||||||
745 | ExprResult Res = E; | ||||||||
746 | // Only do implicit cast for a function type, but not for a pointer | ||||||||
747 | // to function type. | ||||||||
748 | if (Ty->isFunctionType()) { | ||||||||
749 | Res = ImpCastExprToType(E, Context.getPointerType(Ty), | ||||||||
750 | CK_FunctionToPointerDecay); | ||||||||
751 | if (Res.isInvalid()) | ||||||||
752 | return ExprError(); | ||||||||
753 | } | ||||||||
754 | Res = DefaultLvalueConversion(Res.get()); | ||||||||
755 | if (Res.isInvalid()) | ||||||||
756 | return ExprError(); | ||||||||
757 | return Res.get(); | ||||||||
758 | } | ||||||||
759 | |||||||||
760 | /// UsualUnaryConversions - Performs various conversions that are common to most | ||||||||
761 | /// operators (C99 6.3). The conversions of array and function types are | ||||||||
762 | /// sometimes suppressed. For example, the array->pointer conversion doesn't | ||||||||
763 | /// apply if the array is an argument to the sizeof or address (&) operators. | ||||||||
764 | /// In these instances, this routine should *not* be called. | ||||||||
765 | ExprResult Sema::UsualUnaryConversions(Expr *E) { | ||||||||
766 | // First, convert to an r-value. | ||||||||
767 | ExprResult Res = DefaultFunctionArrayLvalueConversion(E); | ||||||||
768 | if (Res.isInvalid()) | ||||||||
769 | return ExprError(); | ||||||||
770 | E = Res.get(); | ||||||||
771 | |||||||||
772 | QualType Ty = E->getType(); | ||||||||
773 | assert(!Ty.isNull() && "UsualUnaryConversions - missing type")(static_cast <bool> (!Ty.isNull() && "UsualUnaryConversions - missing type" ) ? void (0) : __assert_fail ("!Ty.isNull() && \"UsualUnaryConversions - missing type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 773, __extension__ __PRETTY_FUNCTION__)); | ||||||||
774 | |||||||||
775 | LangOptions::FPEvalMethodKind EvalMethod = CurFPFeatures.getFPEvalMethod(); | ||||||||
776 | if (EvalMethod != LangOptions::FEM_Source && Ty->isFloatingType()) { | ||||||||
777 | switch (EvalMethod) { | ||||||||
778 | default: | ||||||||
779 | llvm_unreachable("Unrecognized float evaluation method")::llvm::llvm_unreachable_internal("Unrecognized float evaluation method" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 779); | ||||||||
780 | break; | ||||||||
781 | case LangOptions::FEM_TargetDefault: | ||||||||
782 | // Float evaluation method not defined, use FEM_Source. | ||||||||
783 | break; | ||||||||
784 | case LangOptions::FEM_Double: | ||||||||
785 | if (Context.getFloatingTypeOrder(Context.DoubleTy, Ty) > 0) | ||||||||
786 | // Widen the expression to double. | ||||||||
787 | return Ty->isComplexType() | ||||||||
788 | ? ImpCastExprToType(E, | ||||||||
789 | Context.getComplexType(Context.DoubleTy), | ||||||||
790 | CK_FloatingComplexCast) | ||||||||
791 | : ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast); | ||||||||
792 | break; | ||||||||
793 | case LangOptions::FEM_Extended: | ||||||||
794 | if (Context.getFloatingTypeOrder(Context.LongDoubleTy, Ty) > 0) | ||||||||
795 | // Widen the expression to long double. | ||||||||
796 | return Ty->isComplexType() | ||||||||
797 | ? ImpCastExprToType( | ||||||||
798 | E, Context.getComplexType(Context.LongDoubleTy), | ||||||||
799 | CK_FloatingComplexCast) | ||||||||
800 | : ImpCastExprToType(E, Context.LongDoubleTy, | ||||||||
801 | CK_FloatingCast); | ||||||||
802 | break; | ||||||||
803 | } | ||||||||
804 | } | ||||||||
805 | |||||||||
806 | // Half FP have to be promoted to float unless it is natively supported | ||||||||
807 | if (Ty->isHalfType() && !getLangOpts().NativeHalfType) | ||||||||
808 | return ImpCastExprToType(Res.get(), Context.FloatTy, CK_FloatingCast); | ||||||||
809 | |||||||||
810 | // Try to perform integral promotions if the object has a theoretically | ||||||||
811 | // promotable type. | ||||||||
812 | if (Ty->isIntegralOrUnscopedEnumerationType()) { | ||||||||
813 | // C99 6.3.1.1p2: | ||||||||
814 | // | ||||||||
815 | // The following may be used in an expression wherever an int or | ||||||||
816 | // unsigned int may be used: | ||||||||
817 | // - an object or expression with an integer type whose integer | ||||||||
818 | // conversion rank is less than or equal to the rank of int | ||||||||
819 | // and unsigned int. | ||||||||
820 | // - A bit-field of type _Bool, int, signed int, or unsigned int. | ||||||||
821 | // | ||||||||
822 | // If an int can represent all values of the original type, the | ||||||||
823 | // value is converted to an int; otherwise, it is converted to an | ||||||||
824 | // unsigned int. These are called the integer promotions. All | ||||||||
825 | // other types are unchanged by the integer promotions. | ||||||||
826 | |||||||||
827 | QualType PTy = Context.isPromotableBitField(E); | ||||||||
828 | if (!PTy.isNull()) { | ||||||||
829 | E = ImpCastExprToType(E, PTy, CK_IntegralCast).get(); | ||||||||
830 | return E; | ||||||||
831 | } | ||||||||
832 | if (Ty->isPromotableIntegerType()) { | ||||||||
833 | QualType PT = Context.getPromotedIntegerType(Ty); | ||||||||
834 | E = ImpCastExprToType(E, PT, CK_IntegralCast).get(); | ||||||||
835 | return E; | ||||||||
836 | } | ||||||||
837 | } | ||||||||
838 | return E; | ||||||||
839 | } | ||||||||
840 | |||||||||
841 | /// DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that | ||||||||
842 | /// do not have a prototype. Arguments that have type float or __fp16 | ||||||||
843 | /// are promoted to double. All other argument types are converted by | ||||||||
844 | /// UsualUnaryConversions(). | ||||||||
845 | ExprResult Sema::DefaultArgumentPromotion(Expr *E) { | ||||||||
846 | QualType Ty = E->getType(); | ||||||||
847 | assert(!Ty.isNull() && "DefaultArgumentPromotion - missing type")(static_cast <bool> (!Ty.isNull() && "DefaultArgumentPromotion - missing type" ) ? void (0) : __assert_fail ("!Ty.isNull() && \"DefaultArgumentPromotion - missing type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 847, __extension__ __PRETTY_FUNCTION__)); | ||||||||
848 | |||||||||
849 | ExprResult Res = UsualUnaryConversions(E); | ||||||||
850 | if (Res.isInvalid()) | ||||||||
851 | return ExprError(); | ||||||||
852 | E = Res.get(); | ||||||||
853 | |||||||||
854 | // If this is a 'float' or '__fp16' (CVR qualified or typedef) | ||||||||
855 | // promote to double. | ||||||||
856 | // Note that default argument promotion applies only to float (and | ||||||||
857 | // half/fp16); it does not apply to _Float16. | ||||||||
858 | const BuiltinType *BTy = Ty->getAs<BuiltinType>(); | ||||||||
859 | if (BTy && (BTy->getKind() == BuiltinType::Half || | ||||||||
860 | BTy->getKind() == BuiltinType::Float)) { | ||||||||
861 | if (getLangOpts().OpenCL && | ||||||||
862 | !getOpenCLOptions().isAvailableOption("cl_khr_fp64", getLangOpts())) { | ||||||||
863 | if (BTy->getKind() == BuiltinType::Half) { | ||||||||
864 | E = ImpCastExprToType(E, Context.FloatTy, CK_FloatingCast).get(); | ||||||||
865 | } | ||||||||
866 | } else { | ||||||||
867 | E = ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast).get(); | ||||||||
868 | } | ||||||||
869 | } | ||||||||
870 | if (BTy && | ||||||||
871 | getLangOpts().getExtendIntArgs() == | ||||||||
872 | LangOptions::ExtendArgsKind::ExtendTo64 && | ||||||||
873 | Context.getTargetInfo().supportsExtendIntArgs() && Ty->isIntegerType() && | ||||||||
874 | Context.getTypeSizeInChars(BTy) < | ||||||||
875 | Context.getTypeSizeInChars(Context.LongLongTy)) { | ||||||||
876 | E = (Ty->isUnsignedIntegerType()) | ||||||||
877 | ? ImpCastExprToType(E, Context.UnsignedLongLongTy, CK_IntegralCast) | ||||||||
878 | .get() | ||||||||
879 | : ImpCastExprToType(E, Context.LongLongTy, CK_IntegralCast).get(); | ||||||||
880 | assert(8 == Context.getTypeSizeInChars(Context.LongLongTy).getQuantity() &&(static_cast <bool> (8 == Context.getTypeSizeInChars(Context .LongLongTy).getQuantity() && "Unexpected typesize for LongLongTy" ) ? void (0) : __assert_fail ("8 == Context.getTypeSizeInChars(Context.LongLongTy).getQuantity() && \"Unexpected typesize for LongLongTy\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 881, __extension__ __PRETTY_FUNCTION__)) | ||||||||
881 | "Unexpected typesize for LongLongTy")(static_cast <bool> (8 == Context.getTypeSizeInChars(Context .LongLongTy).getQuantity() && "Unexpected typesize for LongLongTy" ) ? void (0) : __assert_fail ("8 == Context.getTypeSizeInChars(Context.LongLongTy).getQuantity() && \"Unexpected typesize for LongLongTy\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 881, __extension__ __PRETTY_FUNCTION__)); | ||||||||
882 | } | ||||||||
883 | |||||||||
884 | // C++ performs lvalue-to-rvalue conversion as a default argument | ||||||||
885 | // promotion, even on class types, but note: | ||||||||
886 | // C++11 [conv.lval]p2: | ||||||||
887 | // When an lvalue-to-rvalue conversion occurs in an unevaluated | ||||||||
888 | // operand or a subexpression thereof the value contained in the | ||||||||
889 | // referenced object is not accessed. Otherwise, if the glvalue | ||||||||
890 | // has a class type, the conversion copy-initializes a temporary | ||||||||
891 | // of type T from the glvalue and the result of the conversion | ||||||||
892 | // is a prvalue for the temporary. | ||||||||
893 | // FIXME: add some way to gate this entire thing for correctness in | ||||||||
894 | // potentially potentially evaluated contexts. | ||||||||
895 | if (getLangOpts().CPlusPlus && E->isGLValue() && !isUnevaluatedContext()) { | ||||||||
896 | ExprResult Temp = PerformCopyInitialization( | ||||||||
897 | InitializedEntity::InitializeTemporary(E->getType()), | ||||||||
898 | E->getExprLoc(), E); | ||||||||
899 | if (Temp.isInvalid()) | ||||||||
900 | return ExprError(); | ||||||||
901 | E = Temp.get(); | ||||||||
902 | } | ||||||||
903 | |||||||||
904 | return E; | ||||||||
905 | } | ||||||||
906 | |||||||||
907 | /// Determine the degree of POD-ness for an expression. | ||||||||
908 | /// Incomplete types are considered POD, since this check can be performed | ||||||||
909 | /// when we're in an unevaluated context. | ||||||||
910 | Sema::VarArgKind Sema::isValidVarArgType(const QualType &Ty) { | ||||||||
911 | if (Ty->isIncompleteType()) { | ||||||||
912 | // C++11 [expr.call]p7: | ||||||||
913 | // After these conversions, if the argument does not have arithmetic, | ||||||||
914 | // enumeration, pointer, pointer to member, or class type, the program | ||||||||
915 | // is ill-formed. | ||||||||
916 | // | ||||||||
917 | // Since we've already performed array-to-pointer and function-to-pointer | ||||||||
918 | // decay, the only such type in C++ is cv void. This also handles | ||||||||
919 | // initializer lists as variadic arguments. | ||||||||
920 | if (Ty->isVoidType()) | ||||||||
921 | return VAK_Invalid; | ||||||||
922 | |||||||||
923 | if (Ty->isObjCObjectType()) | ||||||||
924 | return VAK_Invalid; | ||||||||
925 | return VAK_Valid; | ||||||||
926 | } | ||||||||
927 | |||||||||
928 | if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||||||
929 | return VAK_Invalid; | ||||||||
930 | |||||||||
931 | if (Ty.isCXX98PODType(Context)) | ||||||||
932 | return VAK_Valid; | ||||||||
933 | |||||||||
934 | // C++11 [expr.call]p7: | ||||||||
935 | // Passing a potentially-evaluated argument of class type (Clause 9) | ||||||||
936 | // having a non-trivial copy constructor, a non-trivial move constructor, | ||||||||
937 | // or a non-trivial destructor, with no corresponding parameter, | ||||||||
938 | // is conditionally-supported with implementation-defined semantics. | ||||||||
939 | if (getLangOpts().CPlusPlus11 && !Ty->isDependentType()) | ||||||||
940 | if (CXXRecordDecl *Record = Ty->getAsCXXRecordDecl()) | ||||||||
941 | if (!Record->hasNonTrivialCopyConstructor() && | ||||||||
942 | !Record->hasNonTrivialMoveConstructor() && | ||||||||
943 | !Record->hasNonTrivialDestructor()) | ||||||||
944 | return VAK_ValidInCXX11; | ||||||||
945 | |||||||||
946 | if (getLangOpts().ObjCAutoRefCount && Ty->isObjCLifetimeType()) | ||||||||
947 | return VAK_Valid; | ||||||||
948 | |||||||||
949 | if (Ty->isObjCObjectType()) | ||||||||
950 | return VAK_Invalid; | ||||||||
951 | |||||||||
952 | if (getLangOpts().MSVCCompat) | ||||||||
953 | return VAK_MSVCUndefined; | ||||||||
954 | |||||||||
955 | // FIXME: In C++11, these cases are conditionally-supported, meaning we're | ||||||||
956 | // permitted to reject them. We should consider doing so. | ||||||||
957 | return VAK_Undefined; | ||||||||
958 | } | ||||||||
959 | |||||||||
960 | void Sema::checkVariadicArgument(const Expr *E, VariadicCallType CT) { | ||||||||
961 | // Don't allow one to pass an Objective-C interface to a vararg. | ||||||||
962 | const QualType &Ty = E->getType(); | ||||||||
963 | VarArgKind VAK = isValidVarArgType(Ty); | ||||||||
964 | |||||||||
965 | // Complain about passing non-POD types through varargs. | ||||||||
966 | switch (VAK) { | ||||||||
967 | case VAK_ValidInCXX11: | ||||||||
968 | DiagRuntimeBehavior( | ||||||||
969 | E->getBeginLoc(), nullptr, | ||||||||
970 | PDiag(diag::warn_cxx98_compat_pass_non_pod_arg_to_vararg) << Ty << CT); | ||||||||
971 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
972 | case VAK_Valid: | ||||||||
973 | if (Ty->isRecordType()) { | ||||||||
974 | // This is unlikely to be what the user intended. If the class has a | ||||||||
975 | // 'c_str' member function, the user probably meant to call that. | ||||||||
976 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||||||
977 | PDiag(diag::warn_pass_class_arg_to_vararg) | ||||||||
978 | << Ty << CT << hasCStrMethod(E) << ".c_str()"); | ||||||||
979 | } | ||||||||
980 | break; | ||||||||
981 | |||||||||
982 | case VAK_Undefined: | ||||||||
983 | case VAK_MSVCUndefined: | ||||||||
984 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||||||
985 | PDiag(diag::warn_cannot_pass_non_pod_arg_to_vararg) | ||||||||
986 | << getLangOpts().CPlusPlus11 << Ty << CT); | ||||||||
987 | break; | ||||||||
988 | |||||||||
989 | case VAK_Invalid: | ||||||||
990 | if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||||||
991 | Diag(E->getBeginLoc(), | ||||||||
992 | diag::err_cannot_pass_non_trivial_c_struct_to_vararg) | ||||||||
993 | << Ty << CT; | ||||||||
994 | else if (Ty->isObjCObjectType()) | ||||||||
995 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||||||
996 | PDiag(diag::err_cannot_pass_objc_interface_to_vararg) | ||||||||
997 | << Ty << CT); | ||||||||
998 | else | ||||||||
999 | Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg) | ||||||||
1000 | << isa<InitListExpr>(E) << Ty << CT; | ||||||||
1001 | break; | ||||||||
1002 | } | ||||||||
1003 | } | ||||||||
1004 | |||||||||
1005 | /// DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but | ||||||||
1006 | /// will create a trap if the resulting type is not a POD type. | ||||||||
1007 | ExprResult Sema::DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, | ||||||||
1008 | FunctionDecl *FDecl) { | ||||||||
1009 | if (const BuiltinType *PlaceholderTy = E->getType()->getAsPlaceholderType()) { | ||||||||
1010 | // Strip the unbridged-cast placeholder expression off, if applicable. | ||||||||
1011 | if (PlaceholderTy->getKind() == BuiltinType::ARCUnbridgedCast && | ||||||||
1012 | (CT == VariadicMethod || | ||||||||
1013 | (FDecl && FDecl->hasAttr<CFAuditedTransferAttr>()))) { | ||||||||
1014 | E = stripARCUnbridgedCast(E); | ||||||||
1015 | |||||||||
1016 | // Otherwise, do normal placeholder checking. | ||||||||
1017 | } else { | ||||||||
1018 | ExprResult ExprRes = CheckPlaceholderExpr(E); | ||||||||
1019 | if (ExprRes.isInvalid()) | ||||||||
1020 | return ExprError(); | ||||||||
1021 | E = ExprRes.get(); | ||||||||
1022 | } | ||||||||
1023 | } | ||||||||
1024 | |||||||||
1025 | ExprResult ExprRes = DefaultArgumentPromotion(E); | ||||||||
1026 | if (ExprRes.isInvalid()) | ||||||||
1027 | return ExprError(); | ||||||||
1028 | |||||||||
1029 | // Copy blocks to the heap. | ||||||||
1030 | if (ExprRes.get()->getType()->isBlockPointerType()) | ||||||||
1031 | maybeExtendBlockObject(ExprRes); | ||||||||
1032 | |||||||||
1033 | E = ExprRes.get(); | ||||||||
1034 | |||||||||
1035 | // Diagnostics regarding non-POD argument types are | ||||||||
1036 | // emitted along with format string checking in Sema::CheckFunctionCall(). | ||||||||
1037 | if (isValidVarArgType(E->getType()) == VAK_Undefined) { | ||||||||
1038 | // Turn this into a trap. | ||||||||
1039 | CXXScopeSpec SS; | ||||||||
1040 | SourceLocation TemplateKWLoc; | ||||||||
1041 | UnqualifiedId Name; | ||||||||
1042 | Name.setIdentifier(PP.getIdentifierInfo("__builtin_trap"), | ||||||||
1043 | E->getBeginLoc()); | ||||||||
1044 | ExprResult TrapFn = ActOnIdExpression(TUScope, SS, TemplateKWLoc, Name, | ||||||||
1045 | /*HasTrailingLParen=*/true, | ||||||||
1046 | /*IsAddressOfOperand=*/false); | ||||||||
1047 | if (TrapFn.isInvalid()) | ||||||||
1048 | return ExprError(); | ||||||||
1049 | |||||||||
1050 | ExprResult Call = BuildCallExpr(TUScope, TrapFn.get(), E->getBeginLoc(), | ||||||||
1051 | None, E->getEndLoc()); | ||||||||
1052 | if (Call.isInvalid()) | ||||||||
1053 | return ExprError(); | ||||||||
1054 | |||||||||
1055 | ExprResult Comma = | ||||||||
1056 | ActOnBinOp(TUScope, E->getBeginLoc(), tok::comma, Call.get(), E); | ||||||||
1057 | if (Comma.isInvalid()) | ||||||||
1058 | return ExprError(); | ||||||||
1059 | return Comma.get(); | ||||||||
1060 | } | ||||||||
1061 | |||||||||
1062 | if (!getLangOpts().CPlusPlus && | ||||||||
1063 | RequireCompleteType(E->getExprLoc(), E->getType(), | ||||||||
1064 | diag::err_call_incomplete_argument)) | ||||||||
1065 | return ExprError(); | ||||||||
1066 | |||||||||
1067 | return E; | ||||||||
1068 | } | ||||||||
1069 | |||||||||
1070 | /// Converts an integer to complex float type. Helper function of | ||||||||
1071 | /// UsualArithmeticConversions() | ||||||||
1072 | /// | ||||||||
1073 | /// \return false if the integer expression is an integer type and is | ||||||||
1074 | /// successfully converted to the complex type. | ||||||||
1075 | static bool handleIntegerToComplexFloatConversion(Sema &S, ExprResult &IntExpr, | ||||||||
1076 | ExprResult &ComplexExpr, | ||||||||
1077 | QualType IntTy, | ||||||||
1078 | QualType ComplexTy, | ||||||||
1079 | bool SkipCast) { | ||||||||
1080 | if (IntTy->isComplexType() || IntTy->isRealFloatingType()) return true; | ||||||||
1081 | if (SkipCast) return false; | ||||||||
1082 | if (IntTy->isIntegerType()) { | ||||||||
1083 | QualType fpTy = cast<ComplexType>(ComplexTy)->getElementType(); | ||||||||
1084 | IntExpr = S.ImpCastExprToType(IntExpr.get(), fpTy, CK_IntegralToFloating); | ||||||||
1085 | IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, | ||||||||
1086 | CK_FloatingRealToComplex); | ||||||||
1087 | } else { | ||||||||
1088 | assert(IntTy->isComplexIntegerType())(static_cast <bool> (IntTy->isComplexIntegerType()) ? void (0) : __assert_fail ("IntTy->isComplexIntegerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1088, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1089 | IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, | ||||||||
1090 | CK_IntegralComplexToFloatingComplex); | ||||||||
1091 | } | ||||||||
1092 | return false; | ||||||||
1093 | } | ||||||||
1094 | |||||||||
1095 | /// Handle arithmetic conversion with complex types. Helper function of | ||||||||
1096 | /// UsualArithmeticConversions() | ||||||||
1097 | static QualType handleComplexFloatConversion(Sema &S, ExprResult &LHS, | ||||||||
1098 | ExprResult &RHS, QualType LHSType, | ||||||||
1099 | QualType RHSType, | ||||||||
1100 | bool IsCompAssign) { | ||||||||
1101 | // if we have an integer operand, the result is the complex type. | ||||||||
1102 | if (!handleIntegerToComplexFloatConversion(S, RHS, LHS, RHSType, LHSType, | ||||||||
1103 | /*skipCast*/false)) | ||||||||
1104 | return LHSType; | ||||||||
1105 | if (!handleIntegerToComplexFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||||||
1106 | /*skipCast*/IsCompAssign)) | ||||||||
1107 | return RHSType; | ||||||||
1108 | |||||||||
1109 | // This handles complex/complex, complex/float, or float/complex. | ||||||||
1110 | // When both operands are complex, the shorter operand is converted to the | ||||||||
1111 | // type of the longer, and that is the type of the result. This corresponds | ||||||||
1112 | // to what is done when combining two real floating-point operands. | ||||||||
1113 | // The fun begins when size promotion occur across type domains. | ||||||||
1114 | // From H&S 6.3.4: When one operand is complex and the other is a real | ||||||||
1115 | // floating-point type, the less precise type is converted, within it's | ||||||||
1116 | // real or complex domain, to the precision of the other type. For example, | ||||||||
1117 | // when combining a "long double" with a "double _Complex", the | ||||||||
1118 | // "double _Complex" is promoted to "long double _Complex". | ||||||||
1119 | |||||||||
1120 | // Compute the rank of the two types, regardless of whether they are complex. | ||||||||
1121 | int Order = S.Context.getFloatingTypeOrder(LHSType, RHSType); | ||||||||
1122 | |||||||||
1123 | auto *LHSComplexType = dyn_cast<ComplexType>(LHSType); | ||||||||
1124 | auto *RHSComplexType = dyn_cast<ComplexType>(RHSType); | ||||||||
1125 | QualType LHSElementType = | ||||||||
1126 | LHSComplexType ? LHSComplexType->getElementType() : LHSType; | ||||||||
1127 | QualType RHSElementType = | ||||||||
1128 | RHSComplexType ? RHSComplexType->getElementType() : RHSType; | ||||||||
1129 | |||||||||
1130 | QualType ResultType = S.Context.getComplexType(LHSElementType); | ||||||||
1131 | if (Order < 0) { | ||||||||
1132 | // Promote the precision of the LHS if not an assignment. | ||||||||
1133 | ResultType = S.Context.getComplexType(RHSElementType); | ||||||||
1134 | if (!IsCompAssign) { | ||||||||
1135 | if (LHSComplexType) | ||||||||
1136 | LHS = | ||||||||
1137 | S.ImpCastExprToType(LHS.get(), ResultType, CK_FloatingComplexCast); | ||||||||
1138 | else | ||||||||
1139 | LHS = S.ImpCastExprToType(LHS.get(), RHSElementType, CK_FloatingCast); | ||||||||
1140 | } | ||||||||
1141 | } else if (Order > 0) { | ||||||||
1142 | // Promote the precision of the RHS. | ||||||||
1143 | if (RHSComplexType) | ||||||||
1144 | RHS = S.ImpCastExprToType(RHS.get(), ResultType, CK_FloatingComplexCast); | ||||||||
1145 | else | ||||||||
1146 | RHS = S.ImpCastExprToType(RHS.get(), LHSElementType, CK_FloatingCast); | ||||||||
1147 | } | ||||||||
1148 | return ResultType; | ||||||||
1149 | } | ||||||||
1150 | |||||||||
1151 | /// Handle arithmetic conversion from integer to float. Helper function | ||||||||
1152 | /// of UsualArithmeticConversions() | ||||||||
1153 | static QualType handleIntToFloatConversion(Sema &S, ExprResult &FloatExpr, | ||||||||
1154 | ExprResult &IntExpr, | ||||||||
1155 | QualType FloatTy, QualType IntTy, | ||||||||
1156 | bool ConvertFloat, bool ConvertInt) { | ||||||||
1157 | if (IntTy->isIntegerType()) { | ||||||||
1158 | if (ConvertInt) | ||||||||
1159 | // Convert intExpr to the lhs floating point type. | ||||||||
1160 | IntExpr = S.ImpCastExprToType(IntExpr.get(), FloatTy, | ||||||||
1161 | CK_IntegralToFloating); | ||||||||
1162 | return FloatTy; | ||||||||
1163 | } | ||||||||
1164 | |||||||||
1165 | // Convert both sides to the appropriate complex float. | ||||||||
1166 | assert(IntTy->isComplexIntegerType())(static_cast <bool> (IntTy->isComplexIntegerType()) ? void (0) : __assert_fail ("IntTy->isComplexIntegerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1166, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1167 | QualType result = S.Context.getComplexType(FloatTy); | ||||||||
1168 | |||||||||
1169 | // _Complex int -> _Complex float | ||||||||
1170 | if (ConvertInt) | ||||||||
1171 | IntExpr = S.ImpCastExprToType(IntExpr.get(), result, | ||||||||
1172 | CK_IntegralComplexToFloatingComplex); | ||||||||
1173 | |||||||||
1174 | // float -> _Complex float | ||||||||
1175 | if (ConvertFloat) | ||||||||
1176 | FloatExpr = S.ImpCastExprToType(FloatExpr.get(), result, | ||||||||
1177 | CK_FloatingRealToComplex); | ||||||||
1178 | |||||||||
1179 | return result; | ||||||||
1180 | } | ||||||||
1181 | |||||||||
1182 | /// Handle arithmethic conversion with floating point types. Helper | ||||||||
1183 | /// function of UsualArithmeticConversions() | ||||||||
1184 | static QualType handleFloatConversion(Sema &S, ExprResult &LHS, | ||||||||
1185 | ExprResult &RHS, QualType LHSType, | ||||||||
1186 | QualType RHSType, bool IsCompAssign) { | ||||||||
1187 | bool LHSFloat = LHSType->isRealFloatingType(); | ||||||||
1188 | bool RHSFloat = RHSType->isRealFloatingType(); | ||||||||
1189 | |||||||||
1190 | // N1169 4.1.4: If one of the operands has a floating type and the other | ||||||||
1191 | // operand has a fixed-point type, the fixed-point operand | ||||||||
1192 | // is converted to the floating type [...] | ||||||||
1193 | if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) { | ||||||||
1194 | if (LHSFloat) | ||||||||
1195 | RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FixedPointToFloating); | ||||||||
1196 | else if (!IsCompAssign) | ||||||||
1197 | LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FixedPointToFloating); | ||||||||
1198 | return LHSFloat ? LHSType : RHSType; | ||||||||
1199 | } | ||||||||
1200 | |||||||||
1201 | // If we have two real floating types, convert the smaller operand | ||||||||
1202 | // to the bigger result. | ||||||||
1203 | if (LHSFloat && RHSFloat) { | ||||||||
1204 | int order = S.Context.getFloatingTypeOrder(LHSType, RHSType); | ||||||||
1205 | if (order > 0) { | ||||||||
1206 | RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FloatingCast); | ||||||||
1207 | return LHSType; | ||||||||
1208 | } | ||||||||
1209 | |||||||||
1210 | assert(order < 0 && "illegal float comparison")(static_cast <bool> (order < 0 && "illegal float comparison" ) ? void (0) : __assert_fail ("order < 0 && \"illegal float comparison\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1210, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1211 | if (!IsCompAssign) | ||||||||
1212 | LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FloatingCast); | ||||||||
1213 | return RHSType; | ||||||||
1214 | } | ||||||||
1215 | |||||||||
1216 | if (LHSFloat) { | ||||||||
1217 | // Half FP has to be promoted to float unless it is natively supported | ||||||||
1218 | if (LHSType->isHalfType() && !S.getLangOpts().NativeHalfType) | ||||||||
1219 | LHSType = S.Context.FloatTy; | ||||||||
1220 | |||||||||
1221 | return handleIntToFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||||||
1222 | /*ConvertFloat=*/!IsCompAssign, | ||||||||
1223 | /*ConvertInt=*/ true); | ||||||||
1224 | } | ||||||||
1225 | assert(RHSFloat)(static_cast <bool> (RHSFloat) ? void (0) : __assert_fail ("RHSFloat", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1225, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1226 | return handleIntToFloatConversion(S, RHS, LHS, RHSType, LHSType, | ||||||||
1227 | /*ConvertFloat=*/ true, | ||||||||
1228 | /*ConvertInt=*/!IsCompAssign); | ||||||||
1229 | } | ||||||||
1230 | |||||||||
1231 | /// Diagnose attempts to convert between __float128 and long double if | ||||||||
1232 | /// there is no support for such conversion. Helper function of | ||||||||
1233 | /// UsualArithmeticConversions(). | ||||||||
1234 | static bool unsupportedTypeConversion(const Sema &S, QualType LHSType, | ||||||||
1235 | QualType RHSType) { | ||||||||
1236 | /* No issue converting if at least one of the types is not a floating point | ||||||||
1237 | type or the two types have the same rank. | ||||||||
1238 | */ | ||||||||
1239 | if (!LHSType->isFloatingType() || !RHSType->isFloatingType() || | ||||||||
1240 | S.Context.getFloatingTypeOrder(LHSType, RHSType) == 0) | ||||||||
1241 | return false; | ||||||||
1242 | |||||||||
1243 | assert(LHSType->isFloatingType() && RHSType->isFloatingType() &&(static_cast <bool> (LHSType->isFloatingType() && RHSType->isFloatingType() && "The remaining types must be floating point types." ) ? void (0) : __assert_fail ("LHSType->isFloatingType() && RHSType->isFloatingType() && \"The remaining types must be floating point types.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1244, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1244 | "The remaining types must be floating point types.")(static_cast <bool> (LHSType->isFloatingType() && RHSType->isFloatingType() && "The remaining types must be floating point types." ) ? void (0) : __assert_fail ("LHSType->isFloatingType() && RHSType->isFloatingType() && \"The remaining types must be floating point types.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1244, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1245 | |||||||||
1246 | auto *LHSComplex = LHSType->getAs<ComplexType>(); | ||||||||
1247 | auto *RHSComplex = RHSType->getAs<ComplexType>(); | ||||||||
1248 | |||||||||
1249 | QualType LHSElemType = LHSComplex ? | ||||||||
1250 | LHSComplex->getElementType() : LHSType; | ||||||||
1251 | QualType RHSElemType = RHSComplex ? | ||||||||
1252 | RHSComplex->getElementType() : RHSType; | ||||||||
1253 | |||||||||
1254 | // No issue if the two types have the same representation | ||||||||
1255 | if (&S.Context.getFloatTypeSemantics(LHSElemType) == | ||||||||
1256 | &S.Context.getFloatTypeSemantics(RHSElemType)) | ||||||||
1257 | return false; | ||||||||
1258 | |||||||||
1259 | bool Float128AndLongDouble = (LHSElemType == S.Context.Float128Ty && | ||||||||
1260 | RHSElemType == S.Context.LongDoubleTy); | ||||||||
1261 | Float128AndLongDouble |= (LHSElemType == S.Context.LongDoubleTy && | ||||||||
1262 | RHSElemType == S.Context.Float128Ty); | ||||||||
1263 | |||||||||
1264 | // We've handled the situation where __float128 and long double have the same | ||||||||
1265 | // representation. We allow all conversions for all possible long double types | ||||||||
1266 | // except PPC's double double. | ||||||||
1267 | return Float128AndLongDouble && | ||||||||
1268 | (&S.Context.getFloatTypeSemantics(S.Context.LongDoubleTy) == | ||||||||
1269 | &llvm::APFloat::PPCDoubleDouble()); | ||||||||
1270 | } | ||||||||
1271 | |||||||||
1272 | typedef ExprResult PerformCastFn(Sema &S, Expr *operand, QualType toType); | ||||||||
1273 | |||||||||
1274 | namespace { | ||||||||
1275 | /// These helper callbacks are placed in an anonymous namespace to | ||||||||
1276 | /// permit their use as function template parameters. | ||||||||
1277 | ExprResult doIntegralCast(Sema &S, Expr *op, QualType toType) { | ||||||||
1278 | return S.ImpCastExprToType(op, toType, CK_IntegralCast); | ||||||||
1279 | } | ||||||||
1280 | |||||||||
1281 | ExprResult doComplexIntegralCast(Sema &S, Expr *op, QualType toType) { | ||||||||
1282 | return S.ImpCastExprToType(op, S.Context.getComplexType(toType), | ||||||||
1283 | CK_IntegralComplexCast); | ||||||||
1284 | } | ||||||||
1285 | } | ||||||||
1286 | |||||||||
1287 | /// Handle integer arithmetic conversions. Helper function of | ||||||||
1288 | /// UsualArithmeticConversions() | ||||||||
1289 | template <PerformCastFn doLHSCast, PerformCastFn doRHSCast> | ||||||||
1290 | static QualType handleIntegerConversion(Sema &S, ExprResult &LHS, | ||||||||
1291 | ExprResult &RHS, QualType LHSType, | ||||||||
1292 | QualType RHSType, bool IsCompAssign) { | ||||||||
1293 | // The rules for this case are in C99 6.3.1.8 | ||||||||
1294 | int order = S.Context.getIntegerTypeOrder(LHSType, RHSType); | ||||||||
1295 | bool LHSSigned = LHSType->hasSignedIntegerRepresentation(); | ||||||||
1296 | bool RHSSigned = RHSType->hasSignedIntegerRepresentation(); | ||||||||
1297 | if (LHSSigned == RHSSigned) { | ||||||||
1298 | // Same signedness; use the higher-ranked type | ||||||||
1299 | if (order >= 0) { | ||||||||
1300 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||||||
1301 | return LHSType; | ||||||||
1302 | } else if (!IsCompAssign) | ||||||||
1303 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||||||
1304 | return RHSType; | ||||||||
1305 | } else if (order != (LHSSigned ? 1 : -1)) { | ||||||||
1306 | // The unsigned type has greater than or equal rank to the | ||||||||
1307 | // signed type, so use the unsigned type | ||||||||
1308 | if (RHSSigned) { | ||||||||
1309 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||||||
1310 | return LHSType; | ||||||||
1311 | } else if (!IsCompAssign) | ||||||||
1312 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||||||
1313 | return RHSType; | ||||||||
1314 | } else if (S.Context.getIntWidth(LHSType) != S.Context.getIntWidth(RHSType)) { | ||||||||
1315 | // The two types are different widths; if we are here, that | ||||||||
1316 | // means the signed type is larger than the unsigned type, so | ||||||||
1317 | // use the signed type. | ||||||||
1318 | if (LHSSigned) { | ||||||||
1319 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||||||
1320 | return LHSType; | ||||||||
1321 | } else if (!IsCompAssign) | ||||||||
1322 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||||||
1323 | return RHSType; | ||||||||
1324 | } else { | ||||||||
1325 | // The signed type is higher-ranked than the unsigned type, | ||||||||
1326 | // but isn't actually any bigger (like unsigned int and long | ||||||||
1327 | // on most 32-bit systems). Use the unsigned type corresponding | ||||||||
1328 | // to the signed type. | ||||||||
1329 | QualType result = | ||||||||
1330 | S.Context.getCorrespondingUnsignedType(LHSSigned ? LHSType : RHSType); | ||||||||
1331 | RHS = (*doRHSCast)(S, RHS.get(), result); | ||||||||
1332 | if (!IsCompAssign) | ||||||||
1333 | LHS = (*doLHSCast)(S, LHS.get(), result); | ||||||||
1334 | return result; | ||||||||
1335 | } | ||||||||
1336 | } | ||||||||
1337 | |||||||||
1338 | /// Handle conversions with GCC complex int extension. Helper function | ||||||||
1339 | /// of UsualArithmeticConversions() | ||||||||
1340 | static QualType handleComplexIntConversion(Sema &S, ExprResult &LHS, | ||||||||
1341 | ExprResult &RHS, QualType LHSType, | ||||||||
1342 | QualType RHSType, | ||||||||
1343 | bool IsCompAssign) { | ||||||||
1344 | const ComplexType *LHSComplexInt = LHSType->getAsComplexIntegerType(); | ||||||||
1345 | const ComplexType *RHSComplexInt = RHSType->getAsComplexIntegerType(); | ||||||||
1346 | |||||||||
1347 | if (LHSComplexInt && RHSComplexInt) { | ||||||||
1348 | QualType LHSEltType = LHSComplexInt->getElementType(); | ||||||||
1349 | QualType RHSEltType = RHSComplexInt->getElementType(); | ||||||||
1350 | QualType ScalarType = | ||||||||
1351 | handleIntegerConversion<doComplexIntegralCast, doComplexIntegralCast> | ||||||||
1352 | (S, LHS, RHS, LHSEltType, RHSEltType, IsCompAssign); | ||||||||
1353 | |||||||||
1354 | return S.Context.getComplexType(ScalarType); | ||||||||
1355 | } | ||||||||
1356 | |||||||||
1357 | if (LHSComplexInt) { | ||||||||
1358 | QualType LHSEltType = LHSComplexInt->getElementType(); | ||||||||
1359 | QualType ScalarType = | ||||||||
1360 | handleIntegerConversion<doComplexIntegralCast, doIntegralCast> | ||||||||
1361 | (S, LHS, RHS, LHSEltType, RHSType, IsCompAssign); | ||||||||
1362 | QualType ComplexType = S.Context.getComplexType(ScalarType); | ||||||||
1363 | RHS = S.ImpCastExprToType(RHS.get(), ComplexType, | ||||||||
1364 | CK_IntegralRealToComplex); | ||||||||
1365 | |||||||||
1366 | return ComplexType; | ||||||||
1367 | } | ||||||||
1368 | |||||||||
1369 | assert(RHSComplexInt)(static_cast <bool> (RHSComplexInt) ? void (0) : __assert_fail ("RHSComplexInt", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1369, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1370 | |||||||||
1371 | QualType RHSEltType = RHSComplexInt->getElementType(); | ||||||||
1372 | QualType ScalarType = | ||||||||
1373 | handleIntegerConversion<doIntegralCast, doComplexIntegralCast> | ||||||||
1374 | (S, LHS, RHS, LHSType, RHSEltType, IsCompAssign); | ||||||||
1375 | QualType ComplexType = S.Context.getComplexType(ScalarType); | ||||||||
1376 | |||||||||
1377 | if (!IsCompAssign) | ||||||||
1378 | LHS = S.ImpCastExprToType(LHS.get(), ComplexType, | ||||||||
1379 | CK_IntegralRealToComplex); | ||||||||
1380 | return ComplexType; | ||||||||
1381 | } | ||||||||
1382 | |||||||||
1383 | /// Return the rank of a given fixed point or integer type. The value itself | ||||||||
1384 | /// doesn't matter, but the values must be increasing with proper increasing | ||||||||
1385 | /// rank as described in N1169 4.1.1. | ||||||||
1386 | static unsigned GetFixedPointRank(QualType Ty) { | ||||||||
1387 | const auto *BTy = Ty->getAs<BuiltinType>(); | ||||||||
1388 | assert(BTy && "Expected a builtin type.")(static_cast <bool> (BTy && "Expected a builtin type." ) ? void (0) : __assert_fail ("BTy && \"Expected a builtin type.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1388, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1389 | |||||||||
1390 | switch (BTy->getKind()) { | ||||||||
1391 | case BuiltinType::ShortFract: | ||||||||
1392 | case BuiltinType::UShortFract: | ||||||||
1393 | case BuiltinType::SatShortFract: | ||||||||
1394 | case BuiltinType::SatUShortFract: | ||||||||
1395 | return 1; | ||||||||
1396 | case BuiltinType::Fract: | ||||||||
1397 | case BuiltinType::UFract: | ||||||||
1398 | case BuiltinType::SatFract: | ||||||||
1399 | case BuiltinType::SatUFract: | ||||||||
1400 | return 2; | ||||||||
1401 | case BuiltinType::LongFract: | ||||||||
1402 | case BuiltinType::ULongFract: | ||||||||
1403 | case BuiltinType::SatLongFract: | ||||||||
1404 | case BuiltinType::SatULongFract: | ||||||||
1405 | return 3; | ||||||||
1406 | case BuiltinType::ShortAccum: | ||||||||
1407 | case BuiltinType::UShortAccum: | ||||||||
1408 | case BuiltinType::SatShortAccum: | ||||||||
1409 | case BuiltinType::SatUShortAccum: | ||||||||
1410 | return 4; | ||||||||
1411 | case BuiltinType::Accum: | ||||||||
1412 | case BuiltinType::UAccum: | ||||||||
1413 | case BuiltinType::SatAccum: | ||||||||
1414 | case BuiltinType::SatUAccum: | ||||||||
1415 | return 5; | ||||||||
1416 | case BuiltinType::LongAccum: | ||||||||
1417 | case BuiltinType::ULongAccum: | ||||||||
1418 | case BuiltinType::SatLongAccum: | ||||||||
1419 | case BuiltinType::SatULongAccum: | ||||||||
1420 | return 6; | ||||||||
1421 | default: | ||||||||
1422 | if (BTy->isInteger()) | ||||||||
1423 | return 0; | ||||||||
1424 | llvm_unreachable("Unexpected fixed point or integer type")::llvm::llvm_unreachable_internal("Unexpected fixed point or integer type" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1424); | ||||||||
1425 | } | ||||||||
1426 | } | ||||||||
1427 | |||||||||
1428 | /// handleFixedPointConversion - Fixed point operations between fixed | ||||||||
1429 | /// point types and integers or other fixed point types do not fall under | ||||||||
1430 | /// usual arithmetic conversion since these conversions could result in loss | ||||||||
1431 | /// of precsision (N1169 4.1.4). These operations should be calculated with | ||||||||
1432 | /// the full precision of their result type (N1169 4.1.6.2.1). | ||||||||
1433 | static QualType handleFixedPointConversion(Sema &S, QualType LHSTy, | ||||||||
1434 | QualType RHSTy) { | ||||||||
1435 | assert((LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) &&(static_cast <bool> ((LHSTy->isFixedPointType() || RHSTy ->isFixedPointType()) && "Expected at least one of the operands to be a fixed point type" ) ? void (0) : __assert_fail ("(LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) && \"Expected at least one of the operands to be a fixed point type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1436, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1436 | "Expected at least one of the operands to be a fixed point type")(static_cast <bool> ((LHSTy->isFixedPointType() || RHSTy ->isFixedPointType()) && "Expected at least one of the operands to be a fixed point type" ) ? void (0) : __assert_fail ("(LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) && \"Expected at least one of the operands to be a fixed point type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1436, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1437 | assert((LHSTy->isFixedPointOrIntegerType() ||(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1440, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1438 | RHSTy->isFixedPointOrIntegerType()) &&(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1440, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1439 | "Special fixed point arithmetic operation conversions are only "(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1440, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1440 | "applied to ints or other fixed point types")(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1440, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1441 | |||||||||
1442 | // If one operand has signed fixed-point type and the other operand has | ||||||||
1443 | // unsigned fixed-point type, then the unsigned fixed-point operand is | ||||||||
1444 | // converted to its corresponding signed fixed-point type and the resulting | ||||||||
1445 | // type is the type of the converted operand. | ||||||||
1446 | if (RHSTy->isSignedFixedPointType() && LHSTy->isUnsignedFixedPointType()) | ||||||||
1447 | LHSTy = S.Context.getCorrespondingSignedFixedPointType(LHSTy); | ||||||||
1448 | else if (RHSTy->isUnsignedFixedPointType() && LHSTy->isSignedFixedPointType()) | ||||||||
1449 | RHSTy = S.Context.getCorrespondingSignedFixedPointType(RHSTy); | ||||||||
1450 | |||||||||
1451 | // The result type is the type with the highest rank, whereby a fixed-point | ||||||||
1452 | // conversion rank is always greater than an integer conversion rank; if the | ||||||||
1453 | // type of either of the operands is a saturating fixedpoint type, the result | ||||||||
1454 | // type shall be the saturating fixed-point type corresponding to the type | ||||||||
1455 | // with the highest rank; the resulting value is converted (taking into | ||||||||
1456 | // account rounding and overflow) to the precision of the resulting type. | ||||||||
1457 | // Same ranks between signed and unsigned types are resolved earlier, so both | ||||||||
1458 | // types are either signed or both unsigned at this point. | ||||||||
1459 | unsigned LHSTyRank = GetFixedPointRank(LHSTy); | ||||||||
1460 | unsigned RHSTyRank = GetFixedPointRank(RHSTy); | ||||||||
1461 | |||||||||
1462 | QualType ResultTy = LHSTyRank > RHSTyRank ? LHSTy : RHSTy; | ||||||||
1463 | |||||||||
1464 | if (LHSTy->isSaturatedFixedPointType() || RHSTy->isSaturatedFixedPointType()) | ||||||||
1465 | ResultTy = S.Context.getCorrespondingSaturatedType(ResultTy); | ||||||||
1466 | |||||||||
1467 | return ResultTy; | ||||||||
1468 | } | ||||||||
1469 | |||||||||
1470 | /// Check that the usual arithmetic conversions can be performed on this pair of | ||||||||
1471 | /// expressions that might be of enumeration type. | ||||||||
1472 | static void checkEnumArithmeticConversions(Sema &S, Expr *LHS, Expr *RHS, | ||||||||
1473 | SourceLocation Loc, | ||||||||
1474 | Sema::ArithConvKind ACK) { | ||||||||
1475 | // C++2a [expr.arith.conv]p1: | ||||||||
1476 | // If one operand is of enumeration type and the other operand is of a | ||||||||
1477 | // different enumeration type or a floating-point type, this behavior is | ||||||||
1478 | // deprecated ([depr.arith.conv.enum]). | ||||||||
1479 | // | ||||||||
1480 | // Warn on this in all language modes. Produce a deprecation warning in C++20. | ||||||||
1481 | // Eventually we will presumably reject these cases (in C++23 onwards?). | ||||||||
1482 | QualType L = LHS->getType(), R = RHS->getType(); | ||||||||
1483 | bool LEnum = L->isUnscopedEnumerationType(), | ||||||||
1484 | REnum = R->isUnscopedEnumerationType(); | ||||||||
1485 | bool IsCompAssign = ACK == Sema::ACK_CompAssign; | ||||||||
1486 | if ((!IsCompAssign && LEnum && R->isFloatingType()) || | ||||||||
1487 | (REnum && L->isFloatingType())) { | ||||||||
1488 | S.Diag(Loc, S.getLangOpts().CPlusPlus20 | ||||||||
1489 | ? diag::warn_arith_conv_enum_float_cxx20 | ||||||||
1490 | : diag::warn_arith_conv_enum_float) | ||||||||
1491 | << LHS->getSourceRange() << RHS->getSourceRange() | ||||||||
1492 | << (int)ACK << LEnum << L << R; | ||||||||
1493 | } else if (!IsCompAssign && LEnum && REnum && | ||||||||
1494 | !S.Context.hasSameUnqualifiedType(L, R)) { | ||||||||
1495 | unsigned DiagID; | ||||||||
1496 | if (!L->castAs<EnumType>()->getDecl()->hasNameForLinkage() || | ||||||||
1497 | !R->castAs<EnumType>()->getDecl()->hasNameForLinkage()) { | ||||||||
1498 | // If either enumeration type is unnamed, it's less likely that the | ||||||||
1499 | // user cares about this, but this situation is still deprecated in | ||||||||
1500 | // C++2a. Use a different warning group. | ||||||||
1501 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
1502 | ? diag::warn_arith_conv_mixed_anon_enum_types_cxx20 | ||||||||
1503 | : diag::warn_arith_conv_mixed_anon_enum_types; | ||||||||
1504 | } else if (ACK == Sema::ACK_Conditional) { | ||||||||
1505 | // Conditional expressions are separated out because they have | ||||||||
1506 | // historically had a different warning flag. | ||||||||
1507 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
1508 | ? diag::warn_conditional_mixed_enum_types_cxx20 | ||||||||
1509 | : diag::warn_conditional_mixed_enum_types; | ||||||||
1510 | } else if (ACK == Sema::ACK_Comparison) { | ||||||||
1511 | // Comparison expressions are separated out because they have | ||||||||
1512 | // historically had a different warning flag. | ||||||||
1513 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
1514 | ? diag::warn_comparison_mixed_enum_types_cxx20 | ||||||||
1515 | : diag::warn_comparison_mixed_enum_types; | ||||||||
1516 | } else { | ||||||||
1517 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
1518 | ? diag::warn_arith_conv_mixed_enum_types_cxx20 | ||||||||
1519 | : diag::warn_arith_conv_mixed_enum_types; | ||||||||
1520 | } | ||||||||
1521 | S.Diag(Loc, DiagID) << LHS->getSourceRange() << RHS->getSourceRange() | ||||||||
1522 | << (int)ACK << L << R; | ||||||||
1523 | } | ||||||||
1524 | } | ||||||||
1525 | |||||||||
1526 | /// UsualArithmeticConversions - Performs various conversions that are common to | ||||||||
1527 | /// binary operators (C99 6.3.1.8). If both operands aren't arithmetic, this | ||||||||
1528 | /// routine returns the first non-arithmetic type found. The client is | ||||||||
1529 | /// responsible for emitting appropriate error diagnostics. | ||||||||
1530 | QualType Sema::UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, | ||||||||
1531 | SourceLocation Loc, | ||||||||
1532 | ArithConvKind ACK) { | ||||||||
1533 | checkEnumArithmeticConversions(*this, LHS.get(), RHS.get(), Loc, ACK); | ||||||||
1534 | |||||||||
1535 | if (ACK != ACK_CompAssign) { | ||||||||
1536 | LHS = UsualUnaryConversions(LHS.get()); | ||||||||
1537 | if (LHS.isInvalid()) | ||||||||
1538 | return QualType(); | ||||||||
1539 | } | ||||||||
1540 | |||||||||
1541 | RHS = UsualUnaryConversions(RHS.get()); | ||||||||
1542 | if (RHS.isInvalid()) | ||||||||
1543 | return QualType(); | ||||||||
1544 | |||||||||
1545 | // For conversion purposes, we ignore any qualifiers. | ||||||||
1546 | // For example, "const float" and "float" are equivalent. | ||||||||
1547 | QualType LHSType = | ||||||||
1548 | Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); | ||||||||
1549 | QualType RHSType = | ||||||||
1550 | Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); | ||||||||
1551 | |||||||||
1552 | // For conversion purposes, we ignore any atomic qualifier on the LHS. | ||||||||
1553 | if (const AtomicType *AtomicLHS = LHSType->getAs<AtomicType>()) | ||||||||
1554 | LHSType = AtomicLHS->getValueType(); | ||||||||
1555 | |||||||||
1556 | // If both types are identical, no conversion is needed. | ||||||||
1557 | if (LHSType == RHSType) | ||||||||
1558 | return LHSType; | ||||||||
1559 | |||||||||
1560 | // If either side is a non-arithmetic type (e.g. a pointer), we are done. | ||||||||
1561 | // The caller can deal with this (e.g. pointer + int). | ||||||||
1562 | if (!LHSType->isArithmeticType() || !RHSType->isArithmeticType()) | ||||||||
1563 | return QualType(); | ||||||||
1564 | |||||||||
1565 | // Apply unary and bitfield promotions to the LHS's type. | ||||||||
1566 | QualType LHSUnpromotedType = LHSType; | ||||||||
1567 | if (LHSType->isPromotableIntegerType()) | ||||||||
1568 | LHSType = Context.getPromotedIntegerType(LHSType); | ||||||||
1569 | QualType LHSBitfieldPromoteTy = Context.isPromotableBitField(LHS.get()); | ||||||||
1570 | if (!LHSBitfieldPromoteTy.isNull()) | ||||||||
1571 | LHSType = LHSBitfieldPromoteTy; | ||||||||
1572 | if (LHSType != LHSUnpromotedType && ACK != ACK_CompAssign) | ||||||||
1573 | LHS = ImpCastExprToType(LHS.get(), LHSType, CK_IntegralCast); | ||||||||
1574 | |||||||||
1575 | // If both types are identical, no conversion is needed. | ||||||||
1576 | if (LHSType == RHSType) | ||||||||
1577 | return LHSType; | ||||||||
1578 | |||||||||
1579 | // At this point, we have two different arithmetic types. | ||||||||
1580 | |||||||||
1581 | // Diagnose attempts to convert between __float128 and long double where | ||||||||
1582 | // such conversions currently can't be handled. | ||||||||
1583 | if (unsupportedTypeConversion(*this, LHSType, RHSType)) | ||||||||
1584 | return QualType(); | ||||||||
1585 | |||||||||
1586 | // Handle complex types first (C99 6.3.1.8p1). | ||||||||
1587 | if (LHSType->isComplexType() || RHSType->isComplexType()) | ||||||||
1588 | return handleComplexFloatConversion(*this, LHS, RHS, LHSType, RHSType, | ||||||||
1589 | ACK == ACK_CompAssign); | ||||||||
1590 | |||||||||
1591 | // Now handle "real" floating types (i.e. float, double, long double). | ||||||||
1592 | if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) | ||||||||
1593 | return handleFloatConversion(*this, LHS, RHS, LHSType, RHSType, | ||||||||
1594 | ACK == ACK_CompAssign); | ||||||||
1595 | |||||||||
1596 | // Handle GCC complex int extension. | ||||||||
1597 | if (LHSType->isComplexIntegerType() || RHSType->isComplexIntegerType()) | ||||||||
1598 | return handleComplexIntConversion(*this, LHS, RHS, LHSType, RHSType, | ||||||||
1599 | ACK == ACK_CompAssign); | ||||||||
1600 | |||||||||
1601 | if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) | ||||||||
1602 | return handleFixedPointConversion(*this, LHSType, RHSType); | ||||||||
1603 | |||||||||
1604 | // Finally, we have two differing integer types. | ||||||||
1605 | return handleIntegerConversion<doIntegralCast, doIntegralCast> | ||||||||
1606 | (*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); | ||||||||
1607 | } | ||||||||
1608 | |||||||||
1609 | //===----------------------------------------------------------------------===// | ||||||||
1610 | // Semantic Analysis for various Expression Types | ||||||||
1611 | //===----------------------------------------------------------------------===// | ||||||||
1612 | |||||||||
1613 | |||||||||
1614 | ExprResult | ||||||||
1615 | Sema::ActOnGenericSelectionExpr(SourceLocation KeyLoc, | ||||||||
1616 | SourceLocation DefaultLoc, | ||||||||
1617 | SourceLocation RParenLoc, | ||||||||
1618 | Expr *ControllingExpr, | ||||||||
1619 | ArrayRef<ParsedType> ArgTypes, | ||||||||
1620 | ArrayRef<Expr *> ArgExprs) { | ||||||||
1621 | unsigned NumAssocs = ArgTypes.size(); | ||||||||
1622 | assert(NumAssocs == ArgExprs.size())(static_cast <bool> (NumAssocs == ArgExprs.size()) ? void (0) : __assert_fail ("NumAssocs == ArgExprs.size()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1622, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1623 | |||||||||
1624 | TypeSourceInfo **Types = new TypeSourceInfo*[NumAssocs]; | ||||||||
1625 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||||||
1626 | if (ArgTypes[i]) | ||||||||
1627 | (void) GetTypeFromParser(ArgTypes[i], &Types[i]); | ||||||||
1628 | else | ||||||||
1629 | Types[i] = nullptr; | ||||||||
1630 | } | ||||||||
1631 | |||||||||
1632 | ExprResult ER = CreateGenericSelectionExpr(KeyLoc, DefaultLoc, RParenLoc, | ||||||||
1633 | ControllingExpr, | ||||||||
1634 | llvm::makeArrayRef(Types, NumAssocs), | ||||||||
1635 | ArgExprs); | ||||||||
1636 | delete [] Types; | ||||||||
1637 | return ER; | ||||||||
1638 | } | ||||||||
1639 | |||||||||
1640 | ExprResult | ||||||||
1641 | Sema::CreateGenericSelectionExpr(SourceLocation KeyLoc, | ||||||||
1642 | SourceLocation DefaultLoc, | ||||||||
1643 | SourceLocation RParenLoc, | ||||||||
1644 | Expr *ControllingExpr, | ||||||||
1645 | ArrayRef<TypeSourceInfo *> Types, | ||||||||
1646 | ArrayRef<Expr *> Exprs) { | ||||||||
1647 | unsigned NumAssocs = Types.size(); | ||||||||
1648 | assert(NumAssocs == Exprs.size())(static_cast <bool> (NumAssocs == Exprs.size()) ? void ( 0) : __assert_fail ("NumAssocs == Exprs.size()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1648, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1649 | |||||||||
1650 | // Decay and strip qualifiers for the controlling expression type, and handle | ||||||||
1651 | // placeholder type replacement. See committee discussion from WG14 DR423. | ||||||||
1652 | { | ||||||||
1653 | EnterExpressionEvaluationContext Unevaluated( | ||||||||
1654 | *this, Sema::ExpressionEvaluationContext::Unevaluated); | ||||||||
1655 | ExprResult R = DefaultFunctionArrayLvalueConversion(ControllingExpr); | ||||||||
1656 | if (R.isInvalid()) | ||||||||
1657 | return ExprError(); | ||||||||
1658 | ControllingExpr = R.get(); | ||||||||
1659 | } | ||||||||
1660 | |||||||||
1661 | // The controlling expression is an unevaluated operand, so side effects are | ||||||||
1662 | // likely unintended. | ||||||||
1663 | if (!inTemplateInstantiation() && | ||||||||
1664 | ControllingExpr->HasSideEffects(Context, false)) | ||||||||
1665 | Diag(ControllingExpr->getExprLoc(), | ||||||||
1666 | diag::warn_side_effects_unevaluated_context); | ||||||||
1667 | |||||||||
1668 | bool TypeErrorFound = false, | ||||||||
1669 | IsResultDependent = ControllingExpr->isTypeDependent(), | ||||||||
1670 | ContainsUnexpandedParameterPack | ||||||||
1671 | = ControllingExpr->containsUnexpandedParameterPack(); | ||||||||
1672 | |||||||||
1673 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||||||
1674 | if (Exprs[i]->containsUnexpandedParameterPack()) | ||||||||
1675 | ContainsUnexpandedParameterPack = true; | ||||||||
1676 | |||||||||
1677 | if (Types[i]) { | ||||||||
1678 | if (Types[i]->getType()->containsUnexpandedParameterPack()) | ||||||||
1679 | ContainsUnexpandedParameterPack = true; | ||||||||
1680 | |||||||||
1681 | if (Types[i]->getType()->isDependentType()) { | ||||||||
1682 | IsResultDependent = true; | ||||||||
1683 | } else { | ||||||||
1684 | // C11 6.5.1.1p2 "The type name in a generic association shall specify a | ||||||||
1685 | // complete object type other than a variably modified type." | ||||||||
1686 | unsigned D = 0; | ||||||||
1687 | if (Types[i]->getType()->isIncompleteType()) | ||||||||
1688 | D = diag::err_assoc_type_incomplete; | ||||||||
1689 | else if (!Types[i]->getType()->isObjectType()) | ||||||||
1690 | D = diag::err_assoc_type_nonobject; | ||||||||
1691 | else if (Types[i]->getType()->isVariablyModifiedType()) | ||||||||
1692 | D = diag::err_assoc_type_variably_modified; | ||||||||
1693 | |||||||||
1694 | if (D != 0) { | ||||||||
1695 | Diag(Types[i]->getTypeLoc().getBeginLoc(), D) | ||||||||
1696 | << Types[i]->getTypeLoc().getSourceRange() | ||||||||
1697 | << Types[i]->getType(); | ||||||||
1698 | TypeErrorFound = true; | ||||||||
1699 | } | ||||||||
1700 | |||||||||
1701 | // C11 6.5.1.1p2 "No two generic associations in the same generic | ||||||||
1702 | // selection shall specify compatible types." | ||||||||
1703 | for (unsigned j = i+1; j < NumAssocs; ++j) | ||||||||
1704 | if (Types[j] && !Types[j]->getType()->isDependentType() && | ||||||||
1705 | Context.typesAreCompatible(Types[i]->getType(), | ||||||||
1706 | Types[j]->getType())) { | ||||||||
1707 | Diag(Types[j]->getTypeLoc().getBeginLoc(), | ||||||||
1708 | diag::err_assoc_compatible_types) | ||||||||
1709 | << Types[j]->getTypeLoc().getSourceRange() | ||||||||
1710 | << Types[j]->getType() | ||||||||
1711 | << Types[i]->getType(); | ||||||||
1712 | Diag(Types[i]->getTypeLoc().getBeginLoc(), | ||||||||
1713 | diag::note_compat_assoc) | ||||||||
1714 | << Types[i]->getTypeLoc().getSourceRange() | ||||||||
1715 | << Types[i]->getType(); | ||||||||
1716 | TypeErrorFound = true; | ||||||||
1717 | } | ||||||||
1718 | } | ||||||||
1719 | } | ||||||||
1720 | } | ||||||||
1721 | if (TypeErrorFound) | ||||||||
1722 | return ExprError(); | ||||||||
1723 | |||||||||
1724 | // If we determined that the generic selection is result-dependent, don't | ||||||||
1725 | // try to compute the result expression. | ||||||||
1726 | if (IsResultDependent) | ||||||||
1727 | return GenericSelectionExpr::Create(Context, KeyLoc, ControllingExpr, Types, | ||||||||
1728 | Exprs, DefaultLoc, RParenLoc, | ||||||||
1729 | ContainsUnexpandedParameterPack); | ||||||||
1730 | |||||||||
1731 | SmallVector<unsigned, 1> CompatIndices; | ||||||||
1732 | unsigned DefaultIndex = -1U; | ||||||||
1733 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||||||
1734 | if (!Types[i]) | ||||||||
1735 | DefaultIndex = i; | ||||||||
1736 | else if (Context.typesAreCompatible(ControllingExpr->getType(), | ||||||||
1737 | Types[i]->getType())) | ||||||||
1738 | CompatIndices.push_back(i); | ||||||||
1739 | } | ||||||||
1740 | |||||||||
1741 | // C11 6.5.1.1p2 "The controlling expression of a generic selection shall have | ||||||||
1742 | // type compatible with at most one of the types named in its generic | ||||||||
1743 | // association list." | ||||||||
1744 | if (CompatIndices.size() > 1) { | ||||||||
1745 | // We strip parens here because the controlling expression is typically | ||||||||
1746 | // parenthesized in macro definitions. | ||||||||
1747 | ControllingExpr = ControllingExpr->IgnoreParens(); | ||||||||
1748 | Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_multi_match) | ||||||||
1749 | << ControllingExpr->getSourceRange() << ControllingExpr->getType() | ||||||||
1750 | << (unsigned)CompatIndices.size(); | ||||||||
1751 | for (unsigned I : CompatIndices) { | ||||||||
1752 | Diag(Types[I]->getTypeLoc().getBeginLoc(), | ||||||||
1753 | diag::note_compat_assoc) | ||||||||
1754 | << Types[I]->getTypeLoc().getSourceRange() | ||||||||
1755 | << Types[I]->getType(); | ||||||||
1756 | } | ||||||||
1757 | return ExprError(); | ||||||||
1758 | } | ||||||||
1759 | |||||||||
1760 | // C11 6.5.1.1p2 "If a generic selection has no default generic association, | ||||||||
1761 | // its controlling expression shall have type compatible with exactly one of | ||||||||
1762 | // the types named in its generic association list." | ||||||||
1763 | if (DefaultIndex == -1U && CompatIndices.size() == 0) { | ||||||||
1764 | // We strip parens here because the controlling expression is typically | ||||||||
1765 | // parenthesized in macro definitions. | ||||||||
1766 | ControllingExpr = ControllingExpr->IgnoreParens(); | ||||||||
1767 | Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_no_match) | ||||||||
1768 | << ControllingExpr->getSourceRange() << ControllingExpr->getType(); | ||||||||
1769 | return ExprError(); | ||||||||
1770 | } | ||||||||
1771 | |||||||||
1772 | // C11 6.5.1.1p3 "If a generic selection has a generic association with a | ||||||||
1773 | // type name that is compatible with the type of the controlling expression, | ||||||||
1774 | // then the result expression of the generic selection is the expression | ||||||||
1775 | // in that generic association. Otherwise, the result expression of the | ||||||||
1776 | // generic selection is the expression in the default generic association." | ||||||||
1777 | unsigned ResultIndex = | ||||||||
1778 | CompatIndices.size() ? CompatIndices[0] : DefaultIndex; | ||||||||
1779 | |||||||||
1780 | return GenericSelectionExpr::Create( | ||||||||
1781 | Context, KeyLoc, ControllingExpr, Types, Exprs, DefaultLoc, RParenLoc, | ||||||||
1782 | ContainsUnexpandedParameterPack, ResultIndex); | ||||||||
1783 | } | ||||||||
1784 | |||||||||
1785 | /// getUDSuffixLoc - Create a SourceLocation for a ud-suffix, given the | ||||||||
1786 | /// location of the token and the offset of the ud-suffix within it. | ||||||||
1787 | static SourceLocation getUDSuffixLoc(Sema &S, SourceLocation TokLoc, | ||||||||
1788 | unsigned Offset) { | ||||||||
1789 | return Lexer::AdvanceToTokenCharacter(TokLoc, Offset, S.getSourceManager(), | ||||||||
1790 | S.getLangOpts()); | ||||||||
1791 | } | ||||||||
1792 | |||||||||
1793 | /// BuildCookedLiteralOperatorCall - A user-defined literal was found. Look up | ||||||||
1794 | /// the corresponding cooked (non-raw) literal operator, and build a call to it. | ||||||||
1795 | static ExprResult BuildCookedLiteralOperatorCall(Sema &S, Scope *Scope, | ||||||||
1796 | IdentifierInfo *UDSuffix, | ||||||||
1797 | SourceLocation UDSuffixLoc, | ||||||||
1798 | ArrayRef<Expr*> Args, | ||||||||
1799 | SourceLocation LitEndLoc) { | ||||||||
1800 | assert(Args.size() <= 2 && "too many arguments for literal operator")(static_cast <bool> (Args.size() <= 2 && "too many arguments for literal operator" ) ? void (0) : __assert_fail ("Args.size() <= 2 && \"too many arguments for literal operator\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1800, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1801 | |||||||||
1802 | QualType ArgTy[2]; | ||||||||
1803 | for (unsigned ArgIdx = 0; ArgIdx != Args.size(); ++ArgIdx) { | ||||||||
1804 | ArgTy[ArgIdx] = Args[ArgIdx]->getType(); | ||||||||
1805 | if (ArgTy[ArgIdx]->isArrayType()) | ||||||||
1806 | ArgTy[ArgIdx] = S.Context.getArrayDecayedType(ArgTy[ArgIdx]); | ||||||||
1807 | } | ||||||||
1808 | |||||||||
1809 | DeclarationName OpName = | ||||||||
1810 | S.Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||||||
1811 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||||||
1812 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||||||
1813 | |||||||||
1814 | LookupResult R(S, OpName, UDSuffixLoc, Sema::LookupOrdinaryName); | ||||||||
1815 | if (S.LookupLiteralOperator(Scope, R, llvm::makeArrayRef(ArgTy, Args.size()), | ||||||||
1816 | /*AllowRaw*/ false, /*AllowTemplate*/ false, | ||||||||
1817 | /*AllowStringTemplatePack*/ false, | ||||||||
1818 | /*DiagnoseMissing*/ true) == Sema::LOLR_Error) | ||||||||
1819 | return ExprError(); | ||||||||
1820 | |||||||||
1821 | return S.BuildLiteralOperatorCall(R, OpNameInfo, Args, LitEndLoc); | ||||||||
1822 | } | ||||||||
1823 | |||||||||
1824 | /// ActOnStringLiteral - The specified tokens were lexed as pasted string | ||||||||
1825 | /// fragments (e.g. "foo" "bar" L"baz"). The result string has to handle string | ||||||||
1826 | /// concatenation ([C99 5.1.1.2, translation phase #6]), so it may come from | ||||||||
1827 | /// multiple tokens. However, the common case is that StringToks points to one | ||||||||
1828 | /// string. | ||||||||
1829 | /// | ||||||||
1830 | ExprResult | ||||||||
1831 | Sema::ActOnStringLiteral(ArrayRef<Token> StringToks, Scope *UDLScope) { | ||||||||
1832 | assert(!StringToks.empty() && "Must have at least one string!")(static_cast <bool> (!StringToks.empty() && "Must have at least one string!" ) ? void (0) : __assert_fail ("!StringToks.empty() && \"Must have at least one string!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1832, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1833 | |||||||||
1834 | StringLiteralParser Literal(StringToks, PP); | ||||||||
1835 | if (Literal.hadError) | ||||||||
1836 | return ExprError(); | ||||||||
1837 | |||||||||
1838 | SmallVector<SourceLocation, 4> StringTokLocs; | ||||||||
1839 | for (const Token &Tok : StringToks) | ||||||||
1840 | StringTokLocs.push_back(Tok.getLocation()); | ||||||||
1841 | |||||||||
1842 | QualType CharTy = Context.CharTy; | ||||||||
1843 | StringLiteral::StringKind Kind = StringLiteral::Ascii; | ||||||||
1844 | if (Literal.isWide()) { | ||||||||
1845 | CharTy = Context.getWideCharType(); | ||||||||
1846 | Kind = StringLiteral::Wide; | ||||||||
1847 | } else if (Literal.isUTF8()) { | ||||||||
1848 | if (getLangOpts().Char8) | ||||||||
1849 | CharTy = Context.Char8Ty; | ||||||||
1850 | Kind = StringLiteral::UTF8; | ||||||||
1851 | } else if (Literal.isUTF16()) { | ||||||||
1852 | CharTy = Context.Char16Ty; | ||||||||
1853 | Kind = StringLiteral::UTF16; | ||||||||
1854 | } else if (Literal.isUTF32()) { | ||||||||
1855 | CharTy = Context.Char32Ty; | ||||||||
1856 | Kind = StringLiteral::UTF32; | ||||||||
1857 | } else if (Literal.isPascal()) { | ||||||||
1858 | CharTy = Context.UnsignedCharTy; | ||||||||
1859 | } | ||||||||
1860 | |||||||||
1861 | // Warn on initializing an array of char from a u8 string literal; this | ||||||||
1862 | // becomes ill-formed in C++2a. | ||||||||
1863 | if (getLangOpts().CPlusPlus && !getLangOpts().CPlusPlus20 && | ||||||||
1864 | !getLangOpts().Char8 && Kind == StringLiteral::UTF8) { | ||||||||
1865 | Diag(StringTokLocs.front(), diag::warn_cxx20_compat_utf8_string); | ||||||||
1866 | |||||||||
1867 | // Create removals for all 'u8' prefixes in the string literal(s). This | ||||||||
1868 | // ensures C++2a compatibility (but may change the program behavior when | ||||||||
1869 | // built by non-Clang compilers for which the execution character set is | ||||||||
1870 | // not always UTF-8). | ||||||||
1871 | auto RemovalDiag = PDiag(diag::note_cxx20_compat_utf8_string_remove_u8); | ||||||||
1872 | SourceLocation RemovalDiagLoc; | ||||||||
1873 | for (const Token &Tok : StringToks) { | ||||||||
1874 | if (Tok.getKind() == tok::utf8_string_literal) { | ||||||||
1875 | if (RemovalDiagLoc.isInvalid()) | ||||||||
1876 | RemovalDiagLoc = Tok.getLocation(); | ||||||||
1877 | RemovalDiag << FixItHint::CreateRemoval(CharSourceRange::getCharRange( | ||||||||
1878 | Tok.getLocation(), | ||||||||
1879 | Lexer::AdvanceToTokenCharacter(Tok.getLocation(), 2, | ||||||||
1880 | getSourceManager(), getLangOpts()))); | ||||||||
1881 | } | ||||||||
1882 | } | ||||||||
1883 | Diag(RemovalDiagLoc, RemovalDiag); | ||||||||
1884 | } | ||||||||
1885 | |||||||||
1886 | QualType StrTy = | ||||||||
1887 | Context.getStringLiteralArrayType(CharTy, Literal.GetNumStringChars()); | ||||||||
1888 | |||||||||
1889 | // Pass &StringTokLocs[0], StringTokLocs.size() to factory! | ||||||||
1890 | StringLiteral *Lit = StringLiteral::Create(Context, Literal.GetString(), | ||||||||
1891 | Kind, Literal.Pascal, StrTy, | ||||||||
1892 | &StringTokLocs[0], | ||||||||
1893 | StringTokLocs.size()); | ||||||||
1894 | if (Literal.getUDSuffix().empty()) | ||||||||
1895 | return Lit; | ||||||||
1896 | |||||||||
1897 | // We're building a user-defined literal. | ||||||||
1898 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||||||
1899 | SourceLocation UDSuffixLoc = | ||||||||
1900 | getUDSuffixLoc(*this, StringTokLocs[Literal.getUDSuffixToken()], | ||||||||
1901 | Literal.getUDSuffixOffset()); | ||||||||
1902 | |||||||||
1903 | // Make sure we're allowed user-defined literals here. | ||||||||
1904 | if (!UDLScope) | ||||||||
1905 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_string_udl)); | ||||||||
1906 | |||||||||
1907 | // C++11 [lex.ext]p5: The literal L is treated as a call of the form | ||||||||
1908 | // operator "" X (str, len) | ||||||||
1909 | QualType SizeType = Context.getSizeType(); | ||||||||
1910 | |||||||||
1911 | DeclarationName OpName = | ||||||||
1912 | Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||||||
1913 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||||||
1914 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||||||
1915 | |||||||||
1916 | QualType ArgTy[] = { | ||||||||
1917 | Context.getArrayDecayedType(StrTy), SizeType | ||||||||
1918 | }; | ||||||||
1919 | |||||||||
1920 | LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); | ||||||||
1921 | switch (LookupLiteralOperator(UDLScope, R, ArgTy, | ||||||||
1922 | /*AllowRaw*/ false, /*AllowTemplate*/ true, | ||||||||
1923 | /*AllowStringTemplatePack*/ true, | ||||||||
1924 | /*DiagnoseMissing*/ true, Lit)) { | ||||||||
1925 | |||||||||
1926 | case LOLR_Cooked: { | ||||||||
1927 | llvm::APInt Len(Context.getIntWidth(SizeType), Literal.GetNumStringChars()); | ||||||||
1928 | IntegerLiteral *LenArg = IntegerLiteral::Create(Context, Len, SizeType, | ||||||||
1929 | StringTokLocs[0]); | ||||||||
1930 | Expr *Args[] = { Lit, LenArg }; | ||||||||
1931 | |||||||||
1932 | return BuildLiteralOperatorCall(R, OpNameInfo, Args, StringTokLocs.back()); | ||||||||
1933 | } | ||||||||
1934 | |||||||||
1935 | case LOLR_Template: { | ||||||||
1936 | TemplateArgumentListInfo ExplicitArgs; | ||||||||
1937 | TemplateArgument Arg(Lit); | ||||||||
1938 | TemplateArgumentLocInfo ArgInfo(Lit); | ||||||||
1939 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||||||
1940 | return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), | ||||||||
1941 | &ExplicitArgs); | ||||||||
1942 | } | ||||||||
1943 | |||||||||
1944 | case LOLR_StringTemplatePack: { | ||||||||
1945 | TemplateArgumentListInfo ExplicitArgs; | ||||||||
1946 | |||||||||
1947 | unsigned CharBits = Context.getIntWidth(CharTy); | ||||||||
1948 | bool CharIsUnsigned = CharTy->isUnsignedIntegerType(); | ||||||||
1949 | llvm::APSInt Value(CharBits, CharIsUnsigned); | ||||||||
1950 | |||||||||
1951 | TemplateArgument TypeArg(CharTy); | ||||||||
1952 | TemplateArgumentLocInfo TypeArgInfo(Context.getTrivialTypeSourceInfo(CharTy)); | ||||||||
1953 | ExplicitArgs.addArgument(TemplateArgumentLoc(TypeArg, TypeArgInfo)); | ||||||||
1954 | |||||||||
1955 | for (unsigned I = 0, N = Lit->getLength(); I != N; ++I) { | ||||||||
1956 | Value = Lit->getCodeUnit(I); | ||||||||
1957 | TemplateArgument Arg(Context, Value, CharTy); | ||||||||
1958 | TemplateArgumentLocInfo ArgInfo; | ||||||||
1959 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||||||
1960 | } | ||||||||
1961 | return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), | ||||||||
1962 | &ExplicitArgs); | ||||||||
1963 | } | ||||||||
1964 | case LOLR_Raw: | ||||||||
1965 | case LOLR_ErrorNoDiagnostic: | ||||||||
1966 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1966); | ||||||||
1967 | case LOLR_Error: | ||||||||
1968 | return ExprError(); | ||||||||
1969 | } | ||||||||
1970 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1970); | ||||||||
1971 | } | ||||||||
1972 | |||||||||
1973 | DeclRefExpr * | ||||||||
1974 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||||||
1975 | SourceLocation Loc, | ||||||||
1976 | const CXXScopeSpec *SS) { | ||||||||
1977 | DeclarationNameInfo NameInfo(D->getDeclName(), Loc); | ||||||||
1978 | return BuildDeclRefExpr(D, Ty, VK, NameInfo, SS); | ||||||||
1979 | } | ||||||||
1980 | |||||||||
1981 | DeclRefExpr * | ||||||||
1982 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||||||
1983 | const DeclarationNameInfo &NameInfo, | ||||||||
1984 | const CXXScopeSpec *SS, NamedDecl *FoundD, | ||||||||
1985 | SourceLocation TemplateKWLoc, | ||||||||
1986 | const TemplateArgumentListInfo *TemplateArgs) { | ||||||||
1987 | NestedNameSpecifierLoc NNS = | ||||||||
1988 | SS ? SS->getWithLocInContext(Context) : NestedNameSpecifierLoc(); | ||||||||
1989 | return BuildDeclRefExpr(D, Ty, VK, NameInfo, NNS, FoundD, TemplateKWLoc, | ||||||||
1990 | TemplateArgs); | ||||||||
1991 | } | ||||||||
1992 | |||||||||
1993 | // CUDA/HIP: Check whether a captured reference variable is referencing a | ||||||||
1994 | // host variable in a device or host device lambda. | ||||||||
1995 | static bool isCapturingReferenceToHostVarInCUDADeviceLambda(const Sema &S, | ||||||||
1996 | VarDecl *VD) { | ||||||||
1997 | if (!S.getLangOpts().CUDA || !VD->hasInit()) | ||||||||
1998 | return false; | ||||||||
1999 | assert(VD->getType()->isReferenceType())(static_cast <bool> (VD->getType()->isReferenceType ()) ? void (0) : __assert_fail ("VD->getType()->isReferenceType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 1999, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2000 | |||||||||
2001 | // Check whether the reference variable is referencing a host variable. | ||||||||
2002 | auto *DRE = dyn_cast<DeclRefExpr>(VD->getInit()); | ||||||||
2003 | if (!DRE) | ||||||||
2004 | return false; | ||||||||
2005 | auto *Referee = dyn_cast<VarDecl>(DRE->getDecl()); | ||||||||
2006 | if (!Referee || !Referee->hasGlobalStorage() || | ||||||||
2007 | Referee->hasAttr<CUDADeviceAttr>()) | ||||||||
2008 | return false; | ||||||||
2009 | |||||||||
2010 | // Check whether the current function is a device or host device lambda. | ||||||||
2011 | // Check whether the reference variable is a capture by getDeclContext() | ||||||||
2012 | // since refersToEnclosingVariableOrCapture() is not ready at this point. | ||||||||
2013 | auto *MD = dyn_cast_or_null<CXXMethodDecl>(S.CurContext); | ||||||||
2014 | if (MD && MD->getParent()->isLambda() && | ||||||||
2015 | MD->getOverloadedOperator() == OO_Call && MD->hasAttr<CUDADeviceAttr>() && | ||||||||
2016 | VD->getDeclContext() != MD) | ||||||||
2017 | return true; | ||||||||
2018 | |||||||||
2019 | return false; | ||||||||
2020 | } | ||||||||
2021 | |||||||||
2022 | NonOdrUseReason Sema::getNonOdrUseReasonInCurrentContext(ValueDecl *D) { | ||||||||
2023 | // A declaration named in an unevaluated operand never constitutes an odr-use. | ||||||||
2024 | if (isUnevaluatedContext()) | ||||||||
2025 | return NOUR_Unevaluated; | ||||||||
2026 | |||||||||
2027 | // C++2a [basic.def.odr]p4: | ||||||||
2028 | // A variable x whose name appears as a potentially-evaluated expression e | ||||||||
2029 | // is odr-used by e unless [...] x is a reference that is usable in | ||||||||
2030 | // constant expressions. | ||||||||
2031 | // CUDA/HIP: | ||||||||
2032 | // If a reference variable referencing a host variable is captured in a | ||||||||
2033 | // device or host device lambda, the value of the referee must be copied | ||||||||
2034 | // to the capture and the reference variable must be treated as odr-use | ||||||||
2035 | // since the value of the referee is not known at compile time and must | ||||||||
2036 | // be loaded from the captured. | ||||||||
2037 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { | ||||||||
2038 | if (VD->getType()->isReferenceType() && | ||||||||
2039 | !(getLangOpts().OpenMP && isOpenMPCapturedDecl(D)) && | ||||||||
2040 | !isCapturingReferenceToHostVarInCUDADeviceLambda(*this, VD) && | ||||||||
2041 | VD->isUsableInConstantExpressions(Context)) | ||||||||
2042 | return NOUR_Constant; | ||||||||
2043 | } | ||||||||
2044 | |||||||||
2045 | // All remaining non-variable cases constitute an odr-use. For variables, we | ||||||||
2046 | // need to wait and see how the expression is used. | ||||||||
2047 | return NOUR_None; | ||||||||
2048 | } | ||||||||
2049 | |||||||||
2050 | /// BuildDeclRefExpr - Build an expression that references a | ||||||||
2051 | /// declaration that does not require a closure capture. | ||||||||
2052 | DeclRefExpr * | ||||||||
2053 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||||||
2054 | const DeclarationNameInfo &NameInfo, | ||||||||
2055 | NestedNameSpecifierLoc NNS, NamedDecl *FoundD, | ||||||||
2056 | SourceLocation TemplateKWLoc, | ||||||||
2057 | const TemplateArgumentListInfo *TemplateArgs) { | ||||||||
2058 | bool RefersToCapturedVariable = | ||||||||
2059 | isa<VarDecl>(D) && | ||||||||
2060 | NeedToCaptureVariable(cast<VarDecl>(D), NameInfo.getLoc()); | ||||||||
2061 | |||||||||
2062 | DeclRefExpr *E = DeclRefExpr::Create( | ||||||||
2063 | Context, NNS, TemplateKWLoc, D, RefersToCapturedVariable, NameInfo, Ty, | ||||||||
2064 | VK, FoundD, TemplateArgs, getNonOdrUseReasonInCurrentContext(D)); | ||||||||
2065 | MarkDeclRefReferenced(E); | ||||||||
2066 | |||||||||
2067 | // C++ [except.spec]p17: | ||||||||
2068 | // An exception-specification is considered to be needed when: | ||||||||
2069 | // - in an expression, the function is the unique lookup result or | ||||||||
2070 | // the selected member of a set of overloaded functions. | ||||||||
2071 | // | ||||||||
2072 | // We delay doing this until after we've built the function reference and | ||||||||
2073 | // marked it as used so that: | ||||||||
2074 | // a) if the function is defaulted, we get errors from defining it before / | ||||||||
2075 | // instead of errors from computing its exception specification, and | ||||||||
2076 | // b) if the function is a defaulted comparison, we can use the body we | ||||||||
2077 | // build when defining it as input to the exception specification | ||||||||
2078 | // computation rather than computing a new body. | ||||||||
2079 | if (auto *FPT = Ty->getAs<FunctionProtoType>()) { | ||||||||
2080 | if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) { | ||||||||
2081 | if (auto *NewFPT = ResolveExceptionSpec(NameInfo.getLoc(), FPT)) | ||||||||
2082 | E->setType(Context.getQualifiedType(NewFPT, Ty.getQualifiers())); | ||||||||
2083 | } | ||||||||
2084 | } | ||||||||
2085 | |||||||||
2086 | if (getLangOpts().ObjCWeak && isa<VarDecl>(D) && | ||||||||
2087 | Ty.getObjCLifetime() == Qualifiers::OCL_Weak && !isUnevaluatedContext() && | ||||||||
2088 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, E->getBeginLoc())) | ||||||||
2089 | getCurFunction()->recordUseOfWeak(E); | ||||||||
2090 | |||||||||
2091 | FieldDecl *FD = dyn_cast<FieldDecl>(D); | ||||||||
2092 | if (IndirectFieldDecl *IFD = dyn_cast<IndirectFieldDecl>(D)) | ||||||||
2093 | FD = IFD->getAnonField(); | ||||||||
2094 | if (FD) { | ||||||||
2095 | UnusedPrivateFields.remove(FD); | ||||||||
2096 | // Just in case we're building an illegal pointer-to-member. | ||||||||
2097 | if (FD->isBitField()) | ||||||||
2098 | E->setObjectKind(OK_BitField); | ||||||||
2099 | } | ||||||||
2100 | |||||||||
2101 | // C++ [expr.prim]/8: The expression [...] is a bit-field if the identifier | ||||||||
2102 | // designates a bit-field. | ||||||||
2103 | if (auto *BD = dyn_cast<BindingDecl>(D)) | ||||||||
2104 | if (auto *BE = BD->getBinding()) | ||||||||
2105 | E->setObjectKind(BE->getObjectKind()); | ||||||||
2106 | |||||||||
2107 | return E; | ||||||||
2108 | } | ||||||||
2109 | |||||||||
2110 | /// Decomposes the given name into a DeclarationNameInfo, its location, and | ||||||||
2111 | /// possibly a list of template arguments. | ||||||||
2112 | /// | ||||||||
2113 | /// If this produces template arguments, it is permitted to call | ||||||||
2114 | /// DecomposeTemplateName. | ||||||||
2115 | /// | ||||||||
2116 | /// This actually loses a lot of source location information for | ||||||||
2117 | /// non-standard name kinds; we should consider preserving that in | ||||||||
2118 | /// some way. | ||||||||
2119 | void | ||||||||
2120 | Sema::DecomposeUnqualifiedId(const UnqualifiedId &Id, | ||||||||
2121 | TemplateArgumentListInfo &Buffer, | ||||||||
2122 | DeclarationNameInfo &NameInfo, | ||||||||
2123 | const TemplateArgumentListInfo *&TemplateArgs) { | ||||||||
2124 | if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId) { | ||||||||
2125 | Buffer.setLAngleLoc(Id.TemplateId->LAngleLoc); | ||||||||
2126 | Buffer.setRAngleLoc(Id.TemplateId->RAngleLoc); | ||||||||
2127 | |||||||||
2128 | ASTTemplateArgsPtr TemplateArgsPtr(Id.TemplateId->getTemplateArgs(), | ||||||||
2129 | Id.TemplateId->NumArgs); | ||||||||
2130 | translateTemplateArguments(TemplateArgsPtr, Buffer); | ||||||||
2131 | |||||||||
2132 | TemplateName TName = Id.TemplateId->Template.get(); | ||||||||
2133 | SourceLocation TNameLoc = Id.TemplateId->TemplateNameLoc; | ||||||||
2134 | NameInfo = Context.getNameForTemplate(TName, TNameLoc); | ||||||||
2135 | TemplateArgs = &Buffer; | ||||||||
2136 | } else { | ||||||||
2137 | NameInfo = GetNameFromUnqualifiedId(Id); | ||||||||
2138 | TemplateArgs = nullptr; | ||||||||
2139 | } | ||||||||
2140 | } | ||||||||
2141 | |||||||||
2142 | static void emitEmptyLookupTypoDiagnostic( | ||||||||
2143 | const TypoCorrection &TC, Sema &SemaRef, const CXXScopeSpec &SS, | ||||||||
2144 | DeclarationName Typo, SourceLocation TypoLoc, ArrayRef<Expr *> Args, | ||||||||
2145 | unsigned DiagnosticID, unsigned DiagnosticSuggestID) { | ||||||||
2146 | DeclContext *Ctx = | ||||||||
2147 | SS.isEmpty() ? nullptr : SemaRef.computeDeclContext(SS, false); | ||||||||
2148 | if (!TC) { | ||||||||
2149 | // Emit a special diagnostic for failed member lookups. | ||||||||
2150 | // FIXME: computing the declaration context might fail here (?) | ||||||||
2151 | if (Ctx) | ||||||||
2152 | SemaRef.Diag(TypoLoc, diag::err_no_member) << Typo << Ctx | ||||||||
2153 | << SS.getRange(); | ||||||||
2154 | else | ||||||||
2155 | SemaRef.Diag(TypoLoc, DiagnosticID) << Typo; | ||||||||
2156 | return; | ||||||||
2157 | } | ||||||||
2158 | |||||||||
2159 | std::string CorrectedStr = TC.getAsString(SemaRef.getLangOpts()); | ||||||||
2160 | bool DroppedSpecifier = | ||||||||
2161 | TC.WillReplaceSpecifier() && Typo.getAsString() == CorrectedStr; | ||||||||
2162 | unsigned NoteID = TC.getCorrectionDeclAs<ImplicitParamDecl>() | ||||||||
2163 | ? diag::note_implicit_param_decl | ||||||||
2164 | : diag::note_previous_decl; | ||||||||
2165 | if (!Ctx) | ||||||||
2166 | SemaRef.diagnoseTypo(TC, SemaRef.PDiag(DiagnosticSuggestID) << Typo, | ||||||||
2167 | SemaRef.PDiag(NoteID)); | ||||||||
2168 | else | ||||||||
2169 | SemaRef.diagnoseTypo(TC, SemaRef.PDiag(diag::err_no_member_suggest) | ||||||||
2170 | << Typo << Ctx << DroppedSpecifier | ||||||||
2171 | << SS.getRange(), | ||||||||
2172 | SemaRef.PDiag(NoteID)); | ||||||||
2173 | } | ||||||||
2174 | |||||||||
2175 | /// Diagnose a lookup that found results in an enclosing class during error | ||||||||
2176 | /// recovery. This usually indicates that the results were found in a dependent | ||||||||
2177 | /// base class that could not be searched as part of a template definition. | ||||||||
2178 | /// Always issues a diagnostic (though this may be only a warning in MS | ||||||||
2179 | /// compatibility mode). | ||||||||
2180 | /// | ||||||||
2181 | /// Return \c true if the error is unrecoverable, or \c false if the caller | ||||||||
2182 | /// should attempt to recover using these lookup results. | ||||||||
2183 | bool Sema::DiagnoseDependentMemberLookup(LookupResult &R) { | ||||||||
2184 | // During a default argument instantiation the CurContext points | ||||||||
2185 | // to a CXXMethodDecl; but we can't apply a this-> fixit inside a | ||||||||
2186 | // function parameter list, hence add an explicit check. | ||||||||
2187 | bool isDefaultArgument = | ||||||||
2188 | !CodeSynthesisContexts.empty() && | ||||||||
2189 | CodeSynthesisContexts.back().Kind == | ||||||||
2190 | CodeSynthesisContext::DefaultFunctionArgumentInstantiation; | ||||||||
2191 | CXXMethodDecl *CurMethod = dyn_cast<CXXMethodDecl>(CurContext); | ||||||||
2192 | bool isInstance = CurMethod && CurMethod->isInstance() && | ||||||||
2193 | R.getNamingClass() == CurMethod->getParent() && | ||||||||
2194 | !isDefaultArgument; | ||||||||
2195 | |||||||||
2196 | // There are two ways we can find a class-scope declaration during template | ||||||||
2197 | // instantiation that we did not find in the template definition: if it is a | ||||||||
2198 | // member of a dependent base class, or if it is declared after the point of | ||||||||
2199 | // use in the same class. Distinguish these by comparing the class in which | ||||||||
2200 | // the member was found to the naming class of the lookup. | ||||||||
2201 | unsigned DiagID = diag::err_found_in_dependent_base; | ||||||||
2202 | unsigned NoteID = diag::note_member_declared_at; | ||||||||
2203 | if (R.getRepresentativeDecl()->getDeclContext()->Equals(R.getNamingClass())) { | ||||||||
2204 | DiagID = getLangOpts().MSVCCompat ? diag::ext_found_later_in_class | ||||||||
2205 | : diag::err_found_later_in_class; | ||||||||
2206 | } else if (getLangOpts().MSVCCompat) { | ||||||||
2207 | DiagID = diag::ext_found_in_dependent_base; | ||||||||
2208 | NoteID = diag::note_dependent_member_use; | ||||||||
2209 | } | ||||||||
2210 | |||||||||
2211 | if (isInstance) { | ||||||||
2212 | // Give a code modification hint to insert 'this->'. | ||||||||
2213 | Diag(R.getNameLoc(), DiagID) | ||||||||
2214 | << R.getLookupName() | ||||||||
2215 | << FixItHint::CreateInsertion(R.getNameLoc(), "this->"); | ||||||||
2216 | CheckCXXThisCapture(R.getNameLoc()); | ||||||||
2217 | } else { | ||||||||
2218 | // FIXME: Add a FixItHint to insert 'Base::' or 'Derived::' (assuming | ||||||||
2219 | // they're not shadowed). | ||||||||
2220 | Diag(R.getNameLoc(), DiagID) << R.getLookupName(); | ||||||||
2221 | } | ||||||||
2222 | |||||||||
2223 | for (NamedDecl *D : R) | ||||||||
2224 | Diag(D->getLocation(), NoteID); | ||||||||
2225 | |||||||||
2226 | // Return true if we are inside a default argument instantiation | ||||||||
2227 | // and the found name refers to an instance member function, otherwise | ||||||||
2228 | // the caller will try to create an implicit member call and this is wrong | ||||||||
2229 | // for default arguments. | ||||||||
2230 | // | ||||||||
2231 | // FIXME: Is this special case necessary? We could allow the caller to | ||||||||
2232 | // diagnose this. | ||||||||
2233 | if (isDefaultArgument && ((*R.begin())->isCXXInstanceMember())) { | ||||||||
2234 | Diag(R.getNameLoc(), diag::err_member_call_without_object); | ||||||||
2235 | return true; | ||||||||
2236 | } | ||||||||
2237 | |||||||||
2238 | // Tell the callee to try to recover. | ||||||||
2239 | return false; | ||||||||
2240 | } | ||||||||
2241 | |||||||||
2242 | /// Diagnose an empty lookup. | ||||||||
2243 | /// | ||||||||
2244 | /// \return false if new lookup candidates were found | ||||||||
2245 | bool Sema::DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, | ||||||||
2246 | CorrectionCandidateCallback &CCC, | ||||||||
2247 | TemplateArgumentListInfo *ExplicitTemplateArgs, | ||||||||
2248 | ArrayRef<Expr *> Args, TypoExpr **Out) { | ||||||||
2249 | DeclarationName Name = R.getLookupName(); | ||||||||
2250 | |||||||||
2251 | unsigned diagnostic = diag::err_undeclared_var_use; | ||||||||
2252 | unsigned diagnostic_suggest = diag::err_undeclared_var_use_suggest; | ||||||||
2253 | if (Name.getNameKind() == DeclarationName::CXXOperatorName || | ||||||||
2254 | Name.getNameKind() == DeclarationName::CXXLiteralOperatorName || | ||||||||
2255 | Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { | ||||||||
2256 | diagnostic = diag::err_undeclared_use; | ||||||||
2257 | diagnostic_suggest = diag::err_undeclared_use_suggest; | ||||||||
2258 | } | ||||||||
2259 | |||||||||
2260 | // If the original lookup was an unqualified lookup, fake an | ||||||||
2261 | // unqualified lookup. This is useful when (for example) the | ||||||||
2262 | // original lookup would not have found something because it was a | ||||||||
2263 | // dependent name. | ||||||||
2264 | DeclContext *DC = SS.isEmpty() ? CurContext : nullptr; | ||||||||
2265 | while (DC) { | ||||||||
2266 | if (isa<CXXRecordDecl>(DC)) { | ||||||||
2267 | LookupQualifiedName(R, DC); | ||||||||
2268 | |||||||||
2269 | if (!R.empty()) { | ||||||||
2270 | // Don't give errors about ambiguities in this lookup. | ||||||||
2271 | R.suppressDiagnostics(); | ||||||||
2272 | |||||||||
2273 | // If there's a best viable function among the results, only mention | ||||||||
2274 | // that one in the notes. | ||||||||
2275 | OverloadCandidateSet Candidates(R.getNameLoc(), | ||||||||
2276 | OverloadCandidateSet::CSK_Normal); | ||||||||
2277 | AddOverloadedCallCandidates(R, ExplicitTemplateArgs, Args, Candidates); | ||||||||
2278 | OverloadCandidateSet::iterator Best; | ||||||||
2279 | if (Candidates.BestViableFunction(*this, R.getNameLoc(), Best) == | ||||||||
2280 | OR_Success) { | ||||||||
2281 | R.clear(); | ||||||||
2282 | R.addDecl(Best->FoundDecl.getDecl(), Best->FoundDecl.getAccess()); | ||||||||
2283 | R.resolveKind(); | ||||||||
2284 | } | ||||||||
2285 | |||||||||
2286 | return DiagnoseDependentMemberLookup(R); | ||||||||
2287 | } | ||||||||
2288 | |||||||||
2289 | R.clear(); | ||||||||
2290 | } | ||||||||
2291 | |||||||||
2292 | DC = DC->getLookupParent(); | ||||||||
2293 | } | ||||||||
2294 | |||||||||
2295 | // We didn't find anything, so try to correct for a typo. | ||||||||
2296 | TypoCorrection Corrected; | ||||||||
2297 | if (S && Out) { | ||||||||
2298 | SourceLocation TypoLoc = R.getNameLoc(); | ||||||||
2299 | assert(!ExplicitTemplateArgs &&(static_cast <bool> (!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!" ) ? void (0) : __assert_fail ("!ExplicitTemplateArgs && \"Diagnosing an empty lookup with explicit template args!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2300, __extension__ __PRETTY_FUNCTION__)) | ||||||||
2300 | "Diagnosing an empty lookup with explicit template args!")(static_cast <bool> (!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!" ) ? void (0) : __assert_fail ("!ExplicitTemplateArgs && \"Diagnosing an empty lookup with explicit template args!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2300, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2301 | *Out = CorrectTypoDelayed( | ||||||||
2302 | R.getLookupNameInfo(), R.getLookupKind(), S, &SS, CCC, | ||||||||
2303 | [=](const TypoCorrection &TC) { | ||||||||
2304 | emitEmptyLookupTypoDiagnostic(TC, *this, SS, Name, TypoLoc, Args, | ||||||||
2305 | diagnostic, diagnostic_suggest); | ||||||||
2306 | }, | ||||||||
2307 | nullptr, CTK_ErrorRecovery); | ||||||||
2308 | if (*Out) | ||||||||
2309 | return true; | ||||||||
2310 | } else if (S && | ||||||||
2311 | (Corrected = CorrectTypo(R.getLookupNameInfo(), R.getLookupKind(), | ||||||||
2312 | S, &SS, CCC, CTK_ErrorRecovery))) { | ||||||||
2313 | std::string CorrectedStr(Corrected.getAsString(getLangOpts())); | ||||||||
2314 | bool DroppedSpecifier = | ||||||||
2315 | Corrected.WillReplaceSpecifier() && Name.getAsString() == CorrectedStr; | ||||||||
2316 | R.setLookupName(Corrected.getCorrection()); | ||||||||
2317 | |||||||||
2318 | bool AcceptableWithRecovery = false; | ||||||||
2319 | bool AcceptableWithoutRecovery = false; | ||||||||
2320 | NamedDecl *ND = Corrected.getFoundDecl(); | ||||||||
2321 | if (ND) { | ||||||||
2322 | if (Corrected.isOverloaded()) { | ||||||||
2323 | OverloadCandidateSet OCS(R.getNameLoc(), | ||||||||
2324 | OverloadCandidateSet::CSK_Normal); | ||||||||
2325 | OverloadCandidateSet::iterator Best; | ||||||||
2326 | for (NamedDecl *CD : Corrected) { | ||||||||
2327 | if (FunctionTemplateDecl *FTD = | ||||||||
2328 | dyn_cast<FunctionTemplateDecl>(CD)) | ||||||||
2329 | AddTemplateOverloadCandidate( | ||||||||
2330 | FTD, DeclAccessPair::make(FTD, AS_none), ExplicitTemplateArgs, | ||||||||
2331 | Args, OCS); | ||||||||
2332 | else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(CD)) | ||||||||
2333 | if (!ExplicitTemplateArgs || ExplicitTemplateArgs->size() == 0) | ||||||||
2334 | AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), | ||||||||
2335 | Args, OCS); | ||||||||
2336 | } | ||||||||
2337 | switch (OCS.BestViableFunction(*this, R.getNameLoc(), Best)) { | ||||||||
2338 | case OR_Success: | ||||||||
2339 | ND = Best->FoundDecl; | ||||||||
2340 | Corrected.setCorrectionDecl(ND); | ||||||||
2341 | break; | ||||||||
2342 | default: | ||||||||
2343 | // FIXME: Arbitrarily pick the first declaration for the note. | ||||||||
2344 | Corrected.setCorrectionDecl(ND); | ||||||||
2345 | break; | ||||||||
2346 | } | ||||||||
2347 | } | ||||||||
2348 | R.addDecl(ND); | ||||||||
2349 | if (getLangOpts().CPlusPlus && ND->isCXXClassMember()) { | ||||||||
2350 | CXXRecordDecl *Record = nullptr; | ||||||||
2351 | if (Corrected.getCorrectionSpecifier()) { | ||||||||
2352 | const Type *Ty = Corrected.getCorrectionSpecifier()->getAsType(); | ||||||||
2353 | Record = Ty->getAsCXXRecordDecl(); | ||||||||
2354 | } | ||||||||
2355 | if (!Record) | ||||||||
2356 | Record = cast<CXXRecordDecl>( | ||||||||
2357 | ND->getDeclContext()->getRedeclContext()); | ||||||||
2358 | R.setNamingClass(Record); | ||||||||
2359 | } | ||||||||
2360 | |||||||||
2361 | auto *UnderlyingND = ND->getUnderlyingDecl(); | ||||||||
2362 | AcceptableWithRecovery = isa<ValueDecl>(UnderlyingND) || | ||||||||
2363 | isa<FunctionTemplateDecl>(UnderlyingND); | ||||||||
2364 | // FIXME: If we ended up with a typo for a type name or | ||||||||
2365 | // Objective-C class name, we're in trouble because the parser | ||||||||
2366 | // is in the wrong place to recover. Suggest the typo | ||||||||
2367 | // correction, but don't make it a fix-it since we're not going | ||||||||
2368 | // to recover well anyway. | ||||||||
2369 | AcceptableWithoutRecovery = isa<TypeDecl>(UnderlyingND) || | ||||||||
2370 | getAsTypeTemplateDecl(UnderlyingND) || | ||||||||
2371 | isa<ObjCInterfaceDecl>(UnderlyingND); | ||||||||
2372 | } else { | ||||||||
2373 | // FIXME: We found a keyword. Suggest it, but don't provide a fix-it | ||||||||
2374 | // because we aren't able to recover. | ||||||||
2375 | AcceptableWithoutRecovery = true; | ||||||||
2376 | } | ||||||||
2377 | |||||||||
2378 | if (AcceptableWithRecovery || AcceptableWithoutRecovery) { | ||||||||
2379 | unsigned NoteID = Corrected.getCorrectionDeclAs<ImplicitParamDecl>() | ||||||||
2380 | ? diag::note_implicit_param_decl | ||||||||
2381 | : diag::note_previous_decl; | ||||||||
2382 | if (SS.isEmpty()) | ||||||||
2383 | diagnoseTypo(Corrected, PDiag(diagnostic_suggest) << Name, | ||||||||
2384 | PDiag(NoteID), AcceptableWithRecovery); | ||||||||
2385 | else | ||||||||
2386 | diagnoseTypo(Corrected, PDiag(diag::err_no_member_suggest) | ||||||||
2387 | << Name << computeDeclContext(SS, false) | ||||||||
2388 | << DroppedSpecifier << SS.getRange(), | ||||||||
2389 | PDiag(NoteID), AcceptableWithRecovery); | ||||||||
2390 | |||||||||
2391 | // Tell the callee whether to try to recover. | ||||||||
2392 | return !AcceptableWithRecovery; | ||||||||
2393 | } | ||||||||
2394 | } | ||||||||
2395 | R.clear(); | ||||||||
2396 | |||||||||
2397 | // Emit a special diagnostic for failed member lookups. | ||||||||
2398 | // FIXME: computing the declaration context might fail here (?) | ||||||||
2399 | if (!SS.isEmpty()) { | ||||||||
2400 | Diag(R.getNameLoc(), diag::err_no_member) | ||||||||
2401 | << Name << computeDeclContext(SS, false) | ||||||||
2402 | << SS.getRange(); | ||||||||
2403 | return true; | ||||||||
2404 | } | ||||||||
2405 | |||||||||
2406 | // Give up, we can't recover. | ||||||||
2407 | Diag(R.getNameLoc(), diagnostic) << Name; | ||||||||
2408 | return true; | ||||||||
2409 | } | ||||||||
2410 | |||||||||
2411 | /// In Microsoft mode, if we are inside a template class whose parent class has | ||||||||
2412 | /// dependent base classes, and we can't resolve an unqualified identifier, then | ||||||||
2413 | /// assume the identifier is a member of a dependent base class. We can only | ||||||||
2414 | /// recover successfully in static methods, instance methods, and other contexts | ||||||||
2415 | /// where 'this' is available. This doesn't precisely match MSVC's | ||||||||
2416 | /// instantiation model, but it's close enough. | ||||||||
2417 | static Expr * | ||||||||
2418 | recoverFromMSUnqualifiedLookup(Sema &S, ASTContext &Context, | ||||||||
2419 | DeclarationNameInfo &NameInfo, | ||||||||
2420 | SourceLocation TemplateKWLoc, | ||||||||
2421 | const TemplateArgumentListInfo *TemplateArgs) { | ||||||||
2422 | // Only try to recover from lookup into dependent bases in static methods or | ||||||||
2423 | // contexts where 'this' is available. | ||||||||
2424 | QualType ThisType = S.getCurrentThisType(); | ||||||||
2425 | const CXXRecordDecl *RD = nullptr; | ||||||||
2426 | if (!ThisType.isNull()) | ||||||||
2427 | RD = ThisType->getPointeeType()->getAsCXXRecordDecl(); | ||||||||
2428 | else if (auto *MD = dyn_cast<CXXMethodDecl>(S.CurContext)) | ||||||||
2429 | RD = MD->getParent(); | ||||||||
2430 | if (!RD || !RD->hasAnyDependentBases()) | ||||||||
2431 | return nullptr; | ||||||||
2432 | |||||||||
2433 | // Diagnose this as unqualified lookup into a dependent base class. If 'this' | ||||||||
2434 | // is available, suggest inserting 'this->' as a fixit. | ||||||||
2435 | SourceLocation Loc = NameInfo.getLoc(); | ||||||||
2436 | auto DB = S.Diag(Loc, diag::ext_undeclared_unqual_id_with_dependent_base); | ||||||||
2437 | DB << NameInfo.getName() << RD; | ||||||||
2438 | |||||||||
2439 | if (!ThisType.isNull()) { | ||||||||
2440 | DB << FixItHint::CreateInsertion(Loc, "this->"); | ||||||||
2441 | return CXXDependentScopeMemberExpr::Create( | ||||||||
2442 | Context, /*This=*/nullptr, ThisType, /*IsArrow=*/true, | ||||||||
2443 | /*Op=*/SourceLocation(), NestedNameSpecifierLoc(), TemplateKWLoc, | ||||||||
2444 | /*FirstQualifierFoundInScope=*/nullptr, NameInfo, TemplateArgs); | ||||||||
2445 | } | ||||||||
2446 | |||||||||
2447 | // Synthesize a fake NNS that points to the derived class. This will | ||||||||
2448 | // perform name lookup during template instantiation. | ||||||||
2449 | CXXScopeSpec SS; | ||||||||
2450 | auto *NNS = | ||||||||
2451 | NestedNameSpecifier::Create(Context, nullptr, true, RD->getTypeForDecl()); | ||||||||
2452 | SS.MakeTrivial(Context, NNS, SourceRange(Loc, Loc)); | ||||||||
2453 | return DependentScopeDeclRefExpr::Create( | ||||||||
2454 | Context, SS.getWithLocInContext(Context), TemplateKWLoc, NameInfo, | ||||||||
2455 | TemplateArgs); | ||||||||
2456 | } | ||||||||
2457 | |||||||||
2458 | ExprResult | ||||||||
2459 | Sema::ActOnIdExpression(Scope *S, CXXScopeSpec &SS, | ||||||||
2460 | SourceLocation TemplateKWLoc, UnqualifiedId &Id, | ||||||||
2461 | bool HasTrailingLParen, bool IsAddressOfOperand, | ||||||||
2462 | CorrectionCandidateCallback *CCC, | ||||||||
2463 | bool IsInlineAsmIdentifier, Token *KeywordReplacement) { | ||||||||
2464 | assert(!(IsAddressOfOperand && HasTrailingLParen) &&(static_cast <bool> (!(IsAddressOfOperand && HasTrailingLParen ) && "cannot be direct & operand and have a trailing lparen" ) ? void (0) : __assert_fail ("!(IsAddressOfOperand && HasTrailingLParen) && \"cannot be direct & operand and have a trailing lparen\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2465, __extension__ __PRETTY_FUNCTION__)) | ||||||||
2465 | "cannot be direct & operand and have a trailing lparen")(static_cast <bool> (!(IsAddressOfOperand && HasTrailingLParen ) && "cannot be direct & operand and have a trailing lparen" ) ? void (0) : __assert_fail ("!(IsAddressOfOperand && HasTrailingLParen) && \"cannot be direct & operand and have a trailing lparen\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2465, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2466 | if (SS.isInvalid()) | ||||||||
2467 | return ExprError(); | ||||||||
2468 | |||||||||
2469 | TemplateArgumentListInfo TemplateArgsBuffer; | ||||||||
2470 | |||||||||
2471 | // Decompose the UnqualifiedId into the following data. | ||||||||
2472 | DeclarationNameInfo NameInfo; | ||||||||
2473 | const TemplateArgumentListInfo *TemplateArgs; | ||||||||
2474 | DecomposeUnqualifiedId(Id, TemplateArgsBuffer, NameInfo, TemplateArgs); | ||||||||
2475 | |||||||||
2476 | DeclarationName Name = NameInfo.getName(); | ||||||||
2477 | IdentifierInfo *II = Name.getAsIdentifierInfo(); | ||||||||
2478 | SourceLocation NameLoc = NameInfo.getLoc(); | ||||||||
2479 | |||||||||
2480 | if (II && II->isEditorPlaceholder()) { | ||||||||
2481 | // FIXME: When typed placeholders are supported we can create a typed | ||||||||
2482 | // placeholder expression node. | ||||||||
2483 | return ExprError(); | ||||||||
2484 | } | ||||||||
2485 | |||||||||
2486 | // C++ [temp.dep.expr]p3: | ||||||||
2487 | // An id-expression is type-dependent if it contains: | ||||||||
2488 | // -- an identifier that was declared with a dependent type, | ||||||||
2489 | // (note: handled after lookup) | ||||||||
2490 | // -- a template-id that is dependent, | ||||||||
2491 | // (note: handled in BuildTemplateIdExpr) | ||||||||
2492 | // -- a conversion-function-id that specifies a dependent type, | ||||||||
2493 | // -- a nested-name-specifier that contains a class-name that | ||||||||
2494 | // names a dependent type. | ||||||||
2495 | // Determine whether this is a member of an unknown specialization; | ||||||||
2496 | // we need to handle these differently. | ||||||||
2497 | bool DependentID = false; | ||||||||
2498 | if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName && | ||||||||
2499 | Name.getCXXNameType()->isDependentType()) { | ||||||||
2500 | DependentID = true; | ||||||||
2501 | } else if (SS.isSet()) { | ||||||||
2502 | if (DeclContext *DC = computeDeclContext(SS, false)) { | ||||||||
2503 | if (RequireCompleteDeclContext(SS, DC)) | ||||||||
2504 | return ExprError(); | ||||||||
2505 | } else { | ||||||||
2506 | DependentID = true; | ||||||||
2507 | } | ||||||||
2508 | } | ||||||||
2509 | |||||||||
2510 | if (DependentID) | ||||||||
2511 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||||||
2512 | IsAddressOfOperand, TemplateArgs); | ||||||||
2513 | |||||||||
2514 | // Perform the required lookup. | ||||||||
2515 | LookupResult R(*this, NameInfo, | ||||||||
2516 | (Id.getKind() == UnqualifiedIdKind::IK_ImplicitSelfParam) | ||||||||
2517 | ? LookupObjCImplicitSelfParam | ||||||||
2518 | : LookupOrdinaryName); | ||||||||
2519 | if (TemplateKWLoc.isValid() || TemplateArgs) { | ||||||||
2520 | // Lookup the template name again to correctly establish the context in | ||||||||
2521 | // which it was found. This is really unfortunate as we already did the | ||||||||
2522 | // lookup to determine that it was a template name in the first place. If | ||||||||
2523 | // this becomes a performance hit, we can work harder to preserve those | ||||||||
2524 | // results until we get here but it's likely not worth it. | ||||||||
2525 | bool MemberOfUnknownSpecialization; | ||||||||
2526 | AssumedTemplateKind AssumedTemplate; | ||||||||
2527 | if (LookupTemplateName(R, S, SS, QualType(), /*EnteringContext=*/false, | ||||||||
2528 | MemberOfUnknownSpecialization, TemplateKWLoc, | ||||||||
2529 | &AssumedTemplate)) | ||||||||
2530 | return ExprError(); | ||||||||
2531 | |||||||||
2532 | if (MemberOfUnknownSpecialization || | ||||||||
2533 | (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation)) | ||||||||
2534 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||||||
2535 | IsAddressOfOperand, TemplateArgs); | ||||||||
2536 | } else { | ||||||||
2537 | bool IvarLookupFollowUp = II && !SS.isSet() && getCurMethodDecl(); | ||||||||
2538 | LookupParsedName(R, S, &SS, !IvarLookupFollowUp); | ||||||||
2539 | |||||||||
2540 | // If the result might be in a dependent base class, this is a dependent | ||||||||
2541 | // id-expression. | ||||||||
2542 | if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) | ||||||||
2543 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||||||
2544 | IsAddressOfOperand, TemplateArgs); | ||||||||
2545 | |||||||||
2546 | // If this reference is in an Objective-C method, then we need to do | ||||||||
2547 | // some special Objective-C lookup, too. | ||||||||
2548 | if (IvarLookupFollowUp) { | ||||||||
2549 | ExprResult E(LookupInObjCMethod(R, S, II, true)); | ||||||||
2550 | if (E.isInvalid()) | ||||||||
2551 | return ExprError(); | ||||||||
2552 | |||||||||
2553 | if (Expr *Ex = E.getAs<Expr>()) | ||||||||
2554 | return Ex; | ||||||||
2555 | } | ||||||||
2556 | } | ||||||||
2557 | |||||||||
2558 | if (R.isAmbiguous()) | ||||||||
2559 | return ExprError(); | ||||||||
2560 | |||||||||
2561 | // This could be an implicitly declared function reference (legal in C90, | ||||||||
2562 | // extension in C99, forbidden in C++). | ||||||||
2563 | if (R.empty() && HasTrailingLParen && II && !getLangOpts().CPlusPlus) { | ||||||||
2564 | NamedDecl *D = ImplicitlyDefineFunction(NameLoc, *II, S); | ||||||||
2565 | if (D) R.addDecl(D); | ||||||||
2566 | } | ||||||||
2567 | |||||||||
2568 | // Determine whether this name might be a candidate for | ||||||||
2569 | // argument-dependent lookup. | ||||||||
2570 | bool ADL = UseArgumentDependentLookup(SS, R, HasTrailingLParen); | ||||||||
2571 | |||||||||
2572 | if (R.empty() && !ADL) { | ||||||||
2573 | if (SS.isEmpty() && getLangOpts().MSVCCompat) { | ||||||||
2574 | if (Expr *E = recoverFromMSUnqualifiedLookup(*this, Context, NameInfo, | ||||||||
2575 | TemplateKWLoc, TemplateArgs)) | ||||||||
2576 | return E; | ||||||||
2577 | } | ||||||||
2578 | |||||||||
2579 | // Don't diagnose an empty lookup for inline assembly. | ||||||||
2580 | if (IsInlineAsmIdentifier) | ||||||||
2581 | return ExprError(); | ||||||||
2582 | |||||||||
2583 | // If this name wasn't predeclared and if this is not a function | ||||||||
2584 | // call, diagnose the problem. | ||||||||
2585 | TypoExpr *TE = nullptr; | ||||||||
2586 | DefaultFilterCCC DefaultValidator(II, SS.isValid() ? SS.getScopeRep() | ||||||||
2587 | : nullptr); | ||||||||
2588 | DefaultValidator.IsAddressOfOperand = IsAddressOfOperand; | ||||||||
2589 | assert((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) &&(static_cast <bool> ((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured" ) ? void (0) : __assert_fail ("(!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && \"Typo correction callback misconfigured\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2590, __extension__ __PRETTY_FUNCTION__)) | ||||||||
2590 | "Typo correction callback misconfigured")(static_cast <bool> ((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured" ) ? void (0) : __assert_fail ("(!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && \"Typo correction callback misconfigured\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2590, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2591 | if (CCC) { | ||||||||
2592 | // Make sure the callback knows what the typo being diagnosed is. | ||||||||
2593 | CCC->setTypoName(II); | ||||||||
2594 | if (SS.isValid()) | ||||||||
2595 | CCC->setTypoNNS(SS.getScopeRep()); | ||||||||
2596 | } | ||||||||
2597 | // FIXME: DiagnoseEmptyLookup produces bad diagnostics if we're looking for | ||||||||
2598 | // a template name, but we happen to have always already looked up the name | ||||||||
2599 | // before we get here if it must be a template name. | ||||||||
2600 | if (DiagnoseEmptyLookup(S, SS, R, CCC ? *CCC : DefaultValidator, nullptr, | ||||||||
2601 | None, &TE)) { | ||||||||
2602 | if (TE && KeywordReplacement) { | ||||||||
2603 | auto &State = getTypoExprState(TE); | ||||||||
2604 | auto BestTC = State.Consumer->getNextCorrection(); | ||||||||
2605 | if (BestTC.isKeyword()) { | ||||||||
2606 | auto *II = BestTC.getCorrectionAsIdentifierInfo(); | ||||||||
2607 | if (State.DiagHandler) | ||||||||
2608 | State.DiagHandler(BestTC); | ||||||||
2609 | KeywordReplacement->startToken(); | ||||||||
2610 | KeywordReplacement->setKind(II->getTokenID()); | ||||||||
2611 | KeywordReplacement->setIdentifierInfo(II); | ||||||||
2612 | KeywordReplacement->setLocation(BestTC.getCorrectionRange().getBegin()); | ||||||||
2613 | // Clean up the state associated with the TypoExpr, since it has | ||||||||
2614 | // now been diagnosed (without a call to CorrectDelayedTyposInExpr). | ||||||||
2615 | clearDelayedTypo(TE); | ||||||||
2616 | // Signal that a correction to a keyword was performed by returning a | ||||||||
2617 | // valid-but-null ExprResult. | ||||||||
2618 | return (Expr*)nullptr; | ||||||||
2619 | } | ||||||||
2620 | State.Consumer->resetCorrectionStream(); | ||||||||
2621 | } | ||||||||
2622 | return TE ? TE : ExprError(); | ||||||||
2623 | } | ||||||||
2624 | |||||||||
2625 | assert(!R.empty() &&(static_cast <bool> (!R.empty() && "DiagnoseEmptyLookup returned false but added no results" ) ? void (0) : __assert_fail ("!R.empty() && \"DiagnoseEmptyLookup returned false but added no results\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2626, __extension__ __PRETTY_FUNCTION__)) | ||||||||
2626 | "DiagnoseEmptyLookup returned false but added no results")(static_cast <bool> (!R.empty() && "DiagnoseEmptyLookup returned false but added no results" ) ? void (0) : __assert_fail ("!R.empty() && \"DiagnoseEmptyLookup returned false but added no results\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2626, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2627 | |||||||||
2628 | // If we found an Objective-C instance variable, let | ||||||||
2629 | // LookupInObjCMethod build the appropriate expression to | ||||||||
2630 | // reference the ivar. | ||||||||
2631 | if (ObjCIvarDecl *Ivar = R.getAsSingle<ObjCIvarDecl>()) { | ||||||||
2632 | R.clear(); | ||||||||
2633 | ExprResult E(LookupInObjCMethod(R, S, Ivar->getIdentifier())); | ||||||||
2634 | // In a hopelessly buggy code, Objective-C instance variable | ||||||||
2635 | // lookup fails and no expression will be built to reference it. | ||||||||
2636 | if (!E.isInvalid() && !E.get()) | ||||||||
2637 | return ExprError(); | ||||||||
2638 | return E; | ||||||||
2639 | } | ||||||||
2640 | } | ||||||||
2641 | |||||||||
2642 | // This is guaranteed from this point on. | ||||||||
2643 | assert(!R.empty() || ADL)(static_cast <bool> (!R.empty() || ADL) ? void (0) : __assert_fail ("!R.empty() || ADL", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2643, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2644 | |||||||||
2645 | // Check whether this might be a C++ implicit instance member access. | ||||||||
2646 | // C++ [class.mfct.non-static]p3: | ||||||||
2647 | // When an id-expression that is not part of a class member access | ||||||||
2648 | // syntax and not used to form a pointer to member is used in the | ||||||||
2649 | // body of a non-static member function of class X, if name lookup | ||||||||
2650 | // resolves the name in the id-expression to a non-static non-type | ||||||||
2651 | // member of some class C, the id-expression is transformed into a | ||||||||
2652 | // class member access expression using (*this) as the | ||||||||
2653 | // postfix-expression to the left of the . operator. | ||||||||
2654 | // | ||||||||
2655 | // But we don't actually need to do this for '&' operands if R | ||||||||
2656 | // resolved to a function or overloaded function set, because the | ||||||||
2657 | // expression is ill-formed if it actually works out to be a | ||||||||
2658 | // non-static member function: | ||||||||
2659 | // | ||||||||
2660 | // C++ [expr.ref]p4: | ||||||||
2661 | // Otherwise, if E1.E2 refers to a non-static member function. . . | ||||||||
2662 | // [t]he expression can be used only as the left-hand operand of a | ||||||||
2663 | // member function call. | ||||||||
2664 | // | ||||||||
2665 | // There are other safeguards against such uses, but it's important | ||||||||
2666 | // to get this right here so that we don't end up making a | ||||||||
2667 | // spuriously dependent expression if we're inside a dependent | ||||||||
2668 | // instance method. | ||||||||
2669 | if (!R.empty() && (*R.begin())->isCXXClassMember()) { | ||||||||
2670 | bool MightBeImplicitMember; | ||||||||
2671 | if (!IsAddressOfOperand) | ||||||||
2672 | MightBeImplicitMember = true; | ||||||||
2673 | else if (!SS.isEmpty()) | ||||||||
2674 | MightBeImplicitMember = false; | ||||||||
2675 | else if (R.isOverloadedResult()) | ||||||||
2676 | MightBeImplicitMember = false; | ||||||||
2677 | else if (R.isUnresolvableResult()) | ||||||||
2678 | MightBeImplicitMember = true; | ||||||||
2679 | else | ||||||||
2680 | MightBeImplicitMember = isa<FieldDecl>(R.getFoundDecl()) || | ||||||||
2681 | isa<IndirectFieldDecl>(R.getFoundDecl()) || | ||||||||
2682 | isa<MSPropertyDecl>(R.getFoundDecl()); | ||||||||
2683 | |||||||||
2684 | if (MightBeImplicitMember) | ||||||||
2685 | return BuildPossibleImplicitMemberExpr(SS, TemplateKWLoc, | ||||||||
2686 | R, TemplateArgs, S); | ||||||||
2687 | } | ||||||||
2688 | |||||||||
2689 | if (TemplateArgs || TemplateKWLoc.isValid()) { | ||||||||
2690 | |||||||||
2691 | // In C++1y, if this is a variable template id, then check it | ||||||||
2692 | // in BuildTemplateIdExpr(). | ||||||||
2693 | // The single lookup result must be a variable template declaration. | ||||||||
2694 | if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId && Id.TemplateId && | ||||||||
2695 | Id.TemplateId->Kind == TNK_Var_template) { | ||||||||
2696 | assert(R.getAsSingle<VarTemplateDecl>() &&(static_cast <bool> (R.getAsSingle<VarTemplateDecl> () && "There should only be one declaration found.") ? void (0) : __assert_fail ("R.getAsSingle<VarTemplateDecl>() && \"There should only be one declaration found.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2697, __extension__ __PRETTY_FUNCTION__)) | ||||||||
2697 | "There should only be one declaration found.")(static_cast <bool> (R.getAsSingle<VarTemplateDecl> () && "There should only be one declaration found.") ? void (0) : __assert_fail ("R.getAsSingle<VarTemplateDecl>() && \"There should only be one declaration found.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2697, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2698 | } | ||||||||
2699 | |||||||||
2700 | return BuildTemplateIdExpr(SS, TemplateKWLoc, R, ADL, TemplateArgs); | ||||||||
2701 | } | ||||||||
2702 | |||||||||
2703 | return BuildDeclarationNameExpr(SS, R, ADL); | ||||||||
2704 | } | ||||||||
2705 | |||||||||
2706 | /// BuildQualifiedDeclarationNameExpr - Build a C++ qualified | ||||||||
2707 | /// declaration name, generally during template instantiation. | ||||||||
2708 | /// There's a large number of things which don't need to be done along | ||||||||
2709 | /// this path. | ||||||||
2710 | ExprResult Sema::BuildQualifiedDeclarationNameExpr( | ||||||||
2711 | CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, | ||||||||
2712 | bool IsAddressOfOperand, const Scope *S, TypeSourceInfo **RecoveryTSI) { | ||||||||
2713 | DeclContext *DC = computeDeclContext(SS, false); | ||||||||
2714 | if (!DC) | ||||||||
2715 | return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), | ||||||||
2716 | NameInfo, /*TemplateArgs=*/nullptr); | ||||||||
2717 | |||||||||
2718 | if (RequireCompleteDeclContext(SS, DC)) | ||||||||
2719 | return ExprError(); | ||||||||
2720 | |||||||||
2721 | LookupResult R(*this, NameInfo, LookupOrdinaryName); | ||||||||
2722 | LookupQualifiedName(R, DC); | ||||||||
2723 | |||||||||
2724 | if (R.isAmbiguous()) | ||||||||
2725 | return ExprError(); | ||||||||
2726 | |||||||||
2727 | if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) | ||||||||
2728 | return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), | ||||||||
2729 | NameInfo, /*TemplateArgs=*/nullptr); | ||||||||
2730 | |||||||||
2731 | if (R.empty()) { | ||||||||
2732 | // Don't diagnose problems with invalid record decl, the secondary no_member | ||||||||
2733 | // diagnostic during template instantiation is likely bogus, e.g. if a class | ||||||||
2734 | // is invalid because it's derived from an invalid base class, then missing | ||||||||
2735 | // members were likely supposed to be inherited. | ||||||||
2736 | if (const auto *CD = dyn_cast<CXXRecordDecl>(DC)) | ||||||||
2737 | if (CD->isInvalidDecl()) | ||||||||
2738 | return ExprError(); | ||||||||
2739 | Diag(NameInfo.getLoc(), diag::err_no_member) | ||||||||
2740 | << NameInfo.getName() << DC << SS.getRange(); | ||||||||
2741 | return ExprError(); | ||||||||
2742 | } | ||||||||
2743 | |||||||||
2744 | if (const TypeDecl *TD = R.getAsSingle<TypeDecl>()) { | ||||||||
2745 | // Diagnose a missing typename if this resolved unambiguously to a type in | ||||||||
2746 | // a dependent context. If we can recover with a type, downgrade this to | ||||||||
2747 | // a warning in Microsoft compatibility mode. | ||||||||
2748 | unsigned DiagID = diag::err_typename_missing; | ||||||||
2749 | if (RecoveryTSI && getLangOpts().MSVCCompat) | ||||||||
2750 | DiagID = diag::ext_typename_missing; | ||||||||
2751 | SourceLocation Loc = SS.getBeginLoc(); | ||||||||
2752 | auto D = Diag(Loc, DiagID); | ||||||||
2753 | D << SS.getScopeRep() << NameInfo.getName().getAsString() | ||||||||
2754 | << SourceRange(Loc, NameInfo.getEndLoc()); | ||||||||
2755 | |||||||||
2756 | // Don't recover if the caller isn't expecting us to or if we're in a SFINAE | ||||||||
2757 | // context. | ||||||||
2758 | if (!RecoveryTSI) | ||||||||
2759 | return ExprError(); | ||||||||
2760 | |||||||||
2761 | // Only issue the fixit if we're prepared to recover. | ||||||||
2762 | D << FixItHint::CreateInsertion(Loc, "typename "); | ||||||||
2763 | |||||||||
2764 | // Recover by pretending this was an elaborated type. | ||||||||
2765 | QualType Ty = Context.getTypeDeclType(TD); | ||||||||
2766 | TypeLocBuilder TLB; | ||||||||
2767 | TLB.pushTypeSpec(Ty).setNameLoc(NameInfo.getLoc()); | ||||||||
2768 | |||||||||
2769 | QualType ET = getElaboratedType(ETK_None, SS, Ty); | ||||||||
2770 | ElaboratedTypeLoc QTL = TLB.push<ElaboratedTypeLoc>(ET); | ||||||||
2771 | QTL.setElaboratedKeywordLoc(SourceLocation()); | ||||||||
2772 | QTL.setQualifierLoc(SS.getWithLocInContext(Context)); | ||||||||
2773 | |||||||||
2774 | *RecoveryTSI = TLB.getTypeSourceInfo(Context, ET); | ||||||||
2775 | |||||||||
2776 | return ExprEmpty(); | ||||||||
2777 | } | ||||||||
2778 | |||||||||
2779 | // Defend against this resolving to an implicit member access. We usually | ||||||||
2780 | // won't get here if this might be a legitimate a class member (we end up in | ||||||||
2781 | // BuildMemberReferenceExpr instead), but this can be valid if we're forming | ||||||||
2782 | // a pointer-to-member or in an unevaluated context in C++11. | ||||||||
2783 | if (!R.empty() && (*R.begin())->isCXXClassMember() && !IsAddressOfOperand) | ||||||||
2784 | return BuildPossibleImplicitMemberExpr(SS, | ||||||||
2785 | /*TemplateKWLoc=*/SourceLocation(), | ||||||||
2786 | R, /*TemplateArgs=*/nullptr, S); | ||||||||
2787 | |||||||||
2788 | return BuildDeclarationNameExpr(SS, R, /* ADL */ false); | ||||||||
2789 | } | ||||||||
2790 | |||||||||
2791 | /// The parser has read a name in, and Sema has detected that we're currently | ||||||||
2792 | /// inside an ObjC method. Perform some additional checks and determine if we | ||||||||
2793 | /// should form a reference to an ivar. | ||||||||
2794 | /// | ||||||||
2795 | /// Ideally, most of this would be done by lookup, but there's | ||||||||
2796 | /// actually quite a lot of extra work involved. | ||||||||
2797 | DeclResult Sema::LookupIvarInObjCMethod(LookupResult &Lookup, Scope *S, | ||||||||
2798 | IdentifierInfo *II) { | ||||||||
2799 | SourceLocation Loc = Lookup.getNameLoc(); | ||||||||
2800 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | ||||||||
2801 | |||||||||
2802 | // Check for error condition which is already reported. | ||||||||
2803 | if (!CurMethod) | ||||||||
2804 | return DeclResult(true); | ||||||||
2805 | |||||||||
2806 | // There are two cases to handle here. 1) scoped lookup could have failed, | ||||||||
2807 | // in which case we should look for an ivar. 2) scoped lookup could have | ||||||||
2808 | // found a decl, but that decl is outside the current instance method (i.e. | ||||||||
2809 | // a global variable). In these two cases, we do a lookup for an ivar with | ||||||||
2810 | // this name, if the lookup sucedes, we replace it our current decl. | ||||||||
2811 | |||||||||
2812 | // If we're in a class method, we don't normally want to look for | ||||||||
2813 | // ivars. But if we don't find anything else, and there's an | ||||||||
2814 | // ivar, that's an error. | ||||||||
2815 | bool IsClassMethod = CurMethod->isClassMethod(); | ||||||||
2816 | |||||||||
2817 | bool LookForIvars; | ||||||||
2818 | if (Lookup.empty()) | ||||||||
2819 | LookForIvars = true; | ||||||||
2820 | else if (IsClassMethod) | ||||||||
2821 | LookForIvars = false; | ||||||||
2822 | else | ||||||||
2823 | LookForIvars = (Lookup.isSingleResult() && | ||||||||
2824 | Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()); | ||||||||
2825 | ObjCInterfaceDecl *IFace = nullptr; | ||||||||
2826 | if (LookForIvars) { | ||||||||
2827 | IFace = CurMethod->getClassInterface(); | ||||||||
2828 | ObjCInterfaceDecl *ClassDeclared; | ||||||||
2829 | ObjCIvarDecl *IV = nullptr; | ||||||||
2830 | if (IFace && (IV = IFace->lookupInstanceVariable(II, ClassDeclared))) { | ||||||||
2831 | // Diagnose using an ivar in a class method. | ||||||||
2832 | if (IsClassMethod) { | ||||||||
2833 | Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); | ||||||||
2834 | return DeclResult(true); | ||||||||
2835 | } | ||||||||
2836 | |||||||||
2837 | // Diagnose the use of an ivar outside of the declaring class. | ||||||||
2838 | if (IV->getAccessControl() == ObjCIvarDecl::Private && | ||||||||
2839 | !declaresSameEntity(ClassDeclared, IFace) && | ||||||||
2840 | !getLangOpts().DebuggerSupport) | ||||||||
2841 | Diag(Loc, diag::err_private_ivar_access) << IV->getDeclName(); | ||||||||
2842 | |||||||||
2843 | // Success. | ||||||||
2844 | return IV; | ||||||||
2845 | } | ||||||||
2846 | } else if (CurMethod->isInstanceMethod()) { | ||||||||
2847 | // We should warn if a local variable hides an ivar. | ||||||||
2848 | if (ObjCInterfaceDecl *IFace = CurMethod->getClassInterface()) { | ||||||||
2849 | ObjCInterfaceDecl *ClassDeclared; | ||||||||
2850 | if (ObjCIvarDecl *IV = IFace->lookupInstanceVariable(II, ClassDeclared)) { | ||||||||
2851 | if (IV->getAccessControl() != ObjCIvarDecl::Private || | ||||||||
2852 | declaresSameEntity(IFace, ClassDeclared)) | ||||||||
2853 | Diag(Loc, diag::warn_ivar_use_hidden) << IV->getDeclName(); | ||||||||
2854 | } | ||||||||
2855 | } | ||||||||
2856 | } else if (Lookup.isSingleResult() && | ||||||||
2857 | Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()) { | ||||||||
2858 | // If accessing a stand-alone ivar in a class method, this is an error. | ||||||||
2859 | if (const ObjCIvarDecl *IV = | ||||||||
2860 | dyn_cast<ObjCIvarDecl>(Lookup.getFoundDecl())) { | ||||||||
2861 | Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); | ||||||||
2862 | return DeclResult(true); | ||||||||
2863 | } | ||||||||
2864 | } | ||||||||
2865 | |||||||||
2866 | // Didn't encounter an error, didn't find an ivar. | ||||||||
2867 | return DeclResult(false); | ||||||||
2868 | } | ||||||||
2869 | |||||||||
2870 | ExprResult Sema::BuildIvarRefExpr(Scope *S, SourceLocation Loc, | ||||||||
2871 | ObjCIvarDecl *IV) { | ||||||||
2872 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | ||||||||
2873 | assert(CurMethod && CurMethod->isInstanceMethod() &&(static_cast <bool> (CurMethod && CurMethod-> isInstanceMethod() && "should not reference ivar from this context" ) ? void (0) : __assert_fail ("CurMethod && CurMethod->isInstanceMethod() && \"should not reference ivar from this context\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2874, __extension__ __PRETTY_FUNCTION__)) | ||||||||
2874 | "should not reference ivar from this context")(static_cast <bool> (CurMethod && CurMethod-> isInstanceMethod() && "should not reference ivar from this context" ) ? void (0) : __assert_fail ("CurMethod && CurMethod->isInstanceMethod() && \"should not reference ivar from this context\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2874, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2875 | |||||||||
2876 | ObjCInterfaceDecl *IFace = CurMethod->getClassInterface(); | ||||||||
2877 | assert(IFace && "should not reference ivar from this context")(static_cast <bool> (IFace && "should not reference ivar from this context" ) ? void (0) : __assert_fail ("IFace && \"should not reference ivar from this context\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 2877, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2878 | |||||||||
2879 | // If we're referencing an invalid decl, just return this as a silent | ||||||||
2880 | // error node. The error diagnostic was already emitted on the decl. | ||||||||
2881 | if (IV->isInvalidDecl()) | ||||||||
2882 | return ExprError(); | ||||||||
2883 | |||||||||
2884 | // Check if referencing a field with __attribute__((deprecated)). | ||||||||
2885 | if (DiagnoseUseOfDecl(IV, Loc)) | ||||||||
2886 | return ExprError(); | ||||||||
2887 | |||||||||
2888 | // FIXME: This should use a new expr for a direct reference, don't | ||||||||
2889 | // turn this into Self->ivar, just return a BareIVarExpr or something. | ||||||||
2890 | IdentifierInfo &II = Context.Idents.get("self"); | ||||||||
2891 | UnqualifiedId SelfName; | ||||||||
2892 | SelfName.setImplicitSelfParam(&II); | ||||||||
2893 | CXXScopeSpec SelfScopeSpec; | ||||||||
2894 | SourceLocation TemplateKWLoc; | ||||||||
2895 | ExprResult SelfExpr = | ||||||||
2896 | ActOnIdExpression(S, SelfScopeSpec, TemplateKWLoc, SelfName, | ||||||||
2897 | /*HasTrailingLParen=*/false, | ||||||||
2898 | /*IsAddressOfOperand=*/false); | ||||||||
2899 | if (SelfExpr.isInvalid()) | ||||||||
2900 | return ExprError(); | ||||||||
2901 | |||||||||
2902 | SelfExpr = DefaultLvalueConversion(SelfExpr.get()); | ||||||||
2903 | if (SelfExpr.isInvalid()) | ||||||||
2904 | return ExprError(); | ||||||||
2905 | |||||||||
2906 | MarkAnyDeclReferenced(Loc, IV, true); | ||||||||
2907 | |||||||||
2908 | ObjCMethodFamily MF = CurMethod->getMethodFamily(); | ||||||||
2909 | if (MF != OMF_init && MF != OMF_dealloc && MF != OMF_finalize && | ||||||||
2910 | !IvarBacksCurrentMethodAccessor(IFace, CurMethod, IV)) | ||||||||
2911 | Diag(Loc, diag::warn_direct_ivar_access) << IV->getDeclName(); | ||||||||
2912 | |||||||||
2913 | ObjCIvarRefExpr *Result = new (Context) | ||||||||
2914 | ObjCIvarRefExpr(IV, IV->getUsageType(SelfExpr.get()->getType()), Loc, | ||||||||
2915 | IV->getLocation(), SelfExpr.get(), true, true); | ||||||||
2916 | |||||||||
2917 | if (IV->getType().getObjCLifetime() == Qualifiers::OCL_Weak) { | ||||||||
2918 | if (!isUnevaluatedContext() && | ||||||||
2919 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) | ||||||||
2920 | getCurFunction()->recordUseOfWeak(Result); | ||||||||
2921 | } | ||||||||
2922 | if (getLangOpts().ObjCAutoRefCount) | ||||||||
2923 | if (const BlockDecl *BD = CurContext->getInnermostBlockDecl()) | ||||||||
2924 | ImplicitlyRetainedSelfLocs.push_back({Loc, BD}); | ||||||||
2925 | |||||||||
2926 | return Result; | ||||||||
2927 | } | ||||||||
2928 | |||||||||
2929 | /// The parser has read a name in, and Sema has detected that we're currently | ||||||||
2930 | /// inside an ObjC method. Perform some additional checks and determine if we | ||||||||
2931 | /// should form a reference to an ivar. If so, build an expression referencing | ||||||||
2932 | /// that ivar. | ||||||||
2933 | ExprResult | ||||||||
2934 | Sema::LookupInObjCMethod(LookupResult &Lookup, Scope *S, | ||||||||
2935 | IdentifierInfo *II, bool AllowBuiltinCreation) { | ||||||||
2936 | // FIXME: Integrate this lookup step into LookupParsedName. | ||||||||
2937 | DeclResult Ivar = LookupIvarInObjCMethod(Lookup, S, II); | ||||||||
2938 | if (Ivar.isInvalid()) | ||||||||
2939 | return ExprError(); | ||||||||
2940 | if (Ivar.isUsable()) | ||||||||
2941 | return BuildIvarRefExpr(S, Lookup.getNameLoc(), | ||||||||
2942 | cast<ObjCIvarDecl>(Ivar.get())); | ||||||||
2943 | |||||||||
2944 | if (Lookup.empty() && II && AllowBuiltinCreation) | ||||||||
2945 | LookupBuiltin(Lookup); | ||||||||
2946 | |||||||||
2947 | // Sentinel value saying that we didn't do anything special. | ||||||||
2948 | return ExprResult(false); | ||||||||
2949 | } | ||||||||
2950 | |||||||||
2951 | /// Cast a base object to a member's actual type. | ||||||||
2952 | /// | ||||||||
2953 | /// There are two relevant checks: | ||||||||
2954 | /// | ||||||||
2955 | /// C++ [class.access.base]p7: | ||||||||
2956 | /// | ||||||||
2957 | /// If a class member access operator [...] is used to access a non-static | ||||||||
2958 | /// data member or non-static member function, the reference is ill-formed if | ||||||||
2959 | /// the left operand [...] cannot be implicitly converted to a pointer to the | ||||||||
2960 | /// naming class of the right operand. | ||||||||
2961 | /// | ||||||||
2962 | /// C++ [expr.ref]p7: | ||||||||
2963 | /// | ||||||||
2964 | /// If E2 is a non-static data member or a non-static member function, the | ||||||||
2965 | /// program is ill-formed if the class of which E2 is directly a member is an | ||||||||
2966 | /// ambiguous base (11.8) of the naming class (11.9.3) of E2. | ||||||||
2967 | /// | ||||||||
2968 | /// Note that the latter check does not consider access; the access of the | ||||||||
2969 | /// "real" base class is checked as appropriate when checking the access of the | ||||||||
2970 | /// member name. | ||||||||
2971 | ExprResult | ||||||||
2972 | Sema::PerformObjectMemberConversion(Expr *From, | ||||||||
2973 | NestedNameSpecifier *Qualifier, | ||||||||
2974 | NamedDecl *FoundDecl, | ||||||||
2975 | NamedDecl *Member) { | ||||||||
2976 | CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(Member->getDeclContext()); | ||||||||
2977 | if (!RD) | ||||||||
2978 | return From; | ||||||||
2979 | |||||||||
2980 | QualType DestRecordType; | ||||||||
2981 | QualType DestType; | ||||||||
2982 | QualType FromRecordType; | ||||||||
2983 | QualType FromType = From->getType(); | ||||||||
2984 | bool PointerConversions = false; | ||||||||
2985 | if (isa<FieldDecl>(Member)) { | ||||||||
2986 | DestRecordType = Context.getCanonicalType(Context.getTypeDeclType(RD)); | ||||||||
2987 | auto FromPtrType = FromType->getAs<PointerType>(); | ||||||||
2988 | DestRecordType = Context.getAddrSpaceQualType( | ||||||||
2989 | DestRecordType, FromPtrType | ||||||||
2990 | ? FromType->getPointeeType().getAddressSpace() | ||||||||
2991 | : FromType.getAddressSpace()); | ||||||||
2992 | |||||||||
2993 | if (FromPtrType) { | ||||||||
2994 | DestType = Context.getPointerType(DestRecordType); | ||||||||
2995 | FromRecordType = FromPtrType->getPointeeType(); | ||||||||
2996 | PointerConversions = true; | ||||||||
2997 | } else { | ||||||||
2998 | DestType = DestRecordType; | ||||||||
2999 | FromRecordType = FromType; | ||||||||
3000 | } | ||||||||
3001 | } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Member)) { | ||||||||
3002 | if (Method->isStatic()) | ||||||||
3003 | return From; | ||||||||
3004 | |||||||||
3005 | DestType = Method->getThisType(); | ||||||||
3006 | DestRecordType = DestType->getPointeeType(); | ||||||||
3007 | |||||||||
3008 | if (FromType->getAs<PointerType>()) { | ||||||||
3009 | FromRecordType = FromType->getPointeeType(); | ||||||||
3010 | PointerConversions = true; | ||||||||
3011 | } else { | ||||||||
3012 | FromRecordType = FromType; | ||||||||
3013 | DestType = DestRecordType; | ||||||||
3014 | } | ||||||||
3015 | |||||||||
3016 | LangAS FromAS = FromRecordType.getAddressSpace(); | ||||||||
3017 | LangAS DestAS = DestRecordType.getAddressSpace(); | ||||||||
3018 | if (FromAS != DestAS) { | ||||||||
3019 | QualType FromRecordTypeWithoutAS = | ||||||||
3020 | Context.removeAddrSpaceQualType(FromRecordType); | ||||||||
3021 | QualType FromTypeWithDestAS = | ||||||||
3022 | Context.getAddrSpaceQualType(FromRecordTypeWithoutAS, DestAS); | ||||||||
3023 | if (PointerConversions) | ||||||||
3024 | FromTypeWithDestAS = Context.getPointerType(FromTypeWithDestAS); | ||||||||
3025 | From = ImpCastExprToType(From, FromTypeWithDestAS, | ||||||||
3026 | CK_AddressSpaceConversion, From->getValueKind()) | ||||||||
3027 | .get(); | ||||||||
3028 | } | ||||||||
3029 | } else { | ||||||||
3030 | // No conversion necessary. | ||||||||
3031 | return From; | ||||||||
3032 | } | ||||||||
3033 | |||||||||
3034 | if (DestType->isDependentType() || FromType->isDependentType()) | ||||||||
3035 | return From; | ||||||||
3036 | |||||||||
3037 | // If the unqualified types are the same, no conversion is necessary. | ||||||||
3038 | if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) | ||||||||
3039 | return From; | ||||||||
3040 | |||||||||
3041 | SourceRange FromRange = From->getSourceRange(); | ||||||||
3042 | SourceLocation FromLoc = FromRange.getBegin(); | ||||||||
3043 | |||||||||
3044 | ExprValueKind VK = From->getValueKind(); | ||||||||
3045 | |||||||||
3046 | // C++ [class.member.lookup]p8: | ||||||||
3047 | // [...] Ambiguities can often be resolved by qualifying a name with its | ||||||||
3048 | // class name. | ||||||||
3049 | // | ||||||||
3050 | // If the member was a qualified name and the qualified referred to a | ||||||||
3051 | // specific base subobject type, we'll cast to that intermediate type | ||||||||
3052 | // first and then to the object in which the member is declared. That allows | ||||||||
3053 | // one to resolve ambiguities in, e.g., a diamond-shaped hierarchy such as: | ||||||||
3054 | // | ||||||||
3055 | // class Base { public: int x; }; | ||||||||
3056 | // class Derived1 : public Base { }; | ||||||||
3057 | // class Derived2 : public Base { }; | ||||||||
3058 | // class VeryDerived : public Derived1, public Derived2 { void f(); }; | ||||||||
3059 | // | ||||||||
3060 | // void VeryDerived::f() { | ||||||||
3061 | // x = 17; // error: ambiguous base subobjects | ||||||||
3062 | // Derived1::x = 17; // okay, pick the Base subobject of Derived1 | ||||||||
3063 | // } | ||||||||
3064 | if (Qualifier && Qualifier->getAsType()) { | ||||||||
3065 | QualType QType = QualType(Qualifier->getAsType(), 0); | ||||||||
3066 | assert(QType->isRecordType() && "lookup done with non-record type")(static_cast <bool> (QType->isRecordType() && "lookup done with non-record type") ? void (0) : __assert_fail ("QType->isRecordType() && \"lookup done with non-record type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3066, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3067 | |||||||||
3068 | QualType QRecordType = QualType(QType->getAs<RecordType>(), 0); | ||||||||
3069 | |||||||||
3070 | // In C++98, the qualifier type doesn't actually have to be a base | ||||||||
3071 | // type of the object type, in which case we just ignore it. | ||||||||
3072 | // Otherwise build the appropriate casts. | ||||||||
3073 | if (IsDerivedFrom(FromLoc, FromRecordType, QRecordType)) { | ||||||||
3074 | CXXCastPath BasePath; | ||||||||
3075 | if (CheckDerivedToBaseConversion(FromRecordType, QRecordType, | ||||||||
3076 | FromLoc, FromRange, &BasePath)) | ||||||||
3077 | return ExprError(); | ||||||||
3078 | |||||||||
3079 | if (PointerConversions) | ||||||||
3080 | QType = Context.getPointerType(QType); | ||||||||
3081 | From = ImpCastExprToType(From, QType, CK_UncheckedDerivedToBase, | ||||||||
3082 | VK, &BasePath).get(); | ||||||||
3083 | |||||||||
3084 | FromType = QType; | ||||||||
3085 | FromRecordType = QRecordType; | ||||||||
3086 | |||||||||
3087 | // If the qualifier type was the same as the destination type, | ||||||||
3088 | // we're done. | ||||||||
3089 | if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) | ||||||||
3090 | return From; | ||||||||
3091 | } | ||||||||
3092 | } | ||||||||
3093 | |||||||||
3094 | CXXCastPath BasePath; | ||||||||
3095 | if (CheckDerivedToBaseConversion(FromRecordType, DestRecordType, | ||||||||
3096 | FromLoc, FromRange, &BasePath, | ||||||||
3097 | /*IgnoreAccess=*/true)) | ||||||||
3098 | return ExprError(); | ||||||||
3099 | |||||||||
3100 | return ImpCastExprToType(From, DestType, CK_UncheckedDerivedToBase, | ||||||||
3101 | VK, &BasePath); | ||||||||
3102 | } | ||||||||
3103 | |||||||||
3104 | bool Sema::UseArgumentDependentLookup(const CXXScopeSpec &SS, | ||||||||
3105 | const LookupResult &R, | ||||||||
3106 | bool HasTrailingLParen) { | ||||||||
3107 | // Only when used directly as the postfix-expression of a call. | ||||||||
3108 | if (!HasTrailingLParen) | ||||||||
3109 | return false; | ||||||||
3110 | |||||||||
3111 | // Never if a scope specifier was provided. | ||||||||
3112 | if (SS.isSet()) | ||||||||
3113 | return false; | ||||||||
3114 | |||||||||
3115 | // Only in C++ or ObjC++. | ||||||||
3116 | if (!getLangOpts().CPlusPlus) | ||||||||
3117 | return false; | ||||||||
3118 | |||||||||
3119 | // Turn off ADL when we find certain kinds of declarations during | ||||||||
3120 | // normal lookup: | ||||||||
3121 | for (NamedDecl *D : R) { | ||||||||
3122 | // C++0x [basic.lookup.argdep]p3: | ||||||||
3123 | // -- a declaration of a class member | ||||||||
3124 | // Since using decls preserve this property, we check this on the | ||||||||
3125 | // original decl. | ||||||||
3126 | if (D->isCXXClassMember()) | ||||||||
3127 | return false; | ||||||||
3128 | |||||||||
3129 | // C++0x [basic.lookup.argdep]p3: | ||||||||
3130 | // -- a block-scope function declaration that is not a | ||||||||
3131 | // using-declaration | ||||||||
3132 | // NOTE: we also trigger this for function templates (in fact, we | ||||||||
3133 | // don't check the decl type at all, since all other decl types | ||||||||
3134 | // turn off ADL anyway). | ||||||||
3135 | if (isa<UsingShadowDecl>(D)) | ||||||||
3136 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); | ||||||||
3137 | else if (D->getLexicalDeclContext()->isFunctionOrMethod()) | ||||||||
3138 | return false; | ||||||||
3139 | |||||||||
3140 | // C++0x [basic.lookup.argdep]p3: | ||||||||
3141 | // -- a declaration that is neither a function or a function | ||||||||
3142 | // template | ||||||||
3143 | // And also for builtin functions. | ||||||||
3144 | if (isa<FunctionDecl>(D)) { | ||||||||
3145 | FunctionDecl *FDecl = cast<FunctionDecl>(D); | ||||||||
3146 | |||||||||
3147 | // But also builtin functions. | ||||||||
3148 | if (FDecl->getBuiltinID() && FDecl->isImplicit()) | ||||||||
3149 | return false; | ||||||||
3150 | } else if (!isa<FunctionTemplateDecl>(D)) | ||||||||
3151 | return false; | ||||||||
3152 | } | ||||||||
3153 | |||||||||
3154 | return true; | ||||||||
3155 | } | ||||||||
3156 | |||||||||
3157 | |||||||||
3158 | /// Diagnoses obvious problems with the use of the given declaration | ||||||||
3159 | /// as an expression. This is only actually called for lookups that | ||||||||
3160 | /// were not overloaded, and it doesn't promise that the declaration | ||||||||
3161 | /// will in fact be used. | ||||||||
3162 | static bool CheckDeclInExpr(Sema &S, SourceLocation Loc, NamedDecl *D) { | ||||||||
3163 | if (D->isInvalidDecl()) | ||||||||
3164 | return true; | ||||||||
3165 | |||||||||
3166 | if (isa<TypedefNameDecl>(D)) { | ||||||||
3167 | S.Diag(Loc, diag::err_unexpected_typedef) << D->getDeclName(); | ||||||||
3168 | return true; | ||||||||
3169 | } | ||||||||
3170 | |||||||||
3171 | if (isa<ObjCInterfaceDecl>(D)) { | ||||||||
3172 | S.Diag(Loc, diag::err_unexpected_interface) << D->getDeclName(); | ||||||||
3173 | return true; | ||||||||
3174 | } | ||||||||
3175 | |||||||||
3176 | if (isa<NamespaceDecl>(D)) { | ||||||||
3177 | S.Diag(Loc, diag::err_unexpected_namespace) << D->getDeclName(); | ||||||||
3178 | return true; | ||||||||
3179 | } | ||||||||
3180 | |||||||||
3181 | return false; | ||||||||
3182 | } | ||||||||
3183 | |||||||||
3184 | // Certain multiversion types should be treated as overloaded even when there is | ||||||||
3185 | // only one result. | ||||||||
3186 | static bool ShouldLookupResultBeMultiVersionOverload(const LookupResult &R) { | ||||||||
3187 | assert(R.isSingleResult() && "Expected only a single result")(static_cast <bool> (R.isSingleResult() && "Expected only a single result" ) ? void (0) : __assert_fail ("R.isSingleResult() && \"Expected only a single result\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3187, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3188 | const auto *FD = dyn_cast<FunctionDecl>(R.getFoundDecl()); | ||||||||
3189 | return FD && | ||||||||
3190 | (FD->isCPUDispatchMultiVersion() || FD->isCPUSpecificMultiVersion()); | ||||||||
3191 | } | ||||||||
3192 | |||||||||
3193 | ExprResult Sema::BuildDeclarationNameExpr(const CXXScopeSpec &SS, | ||||||||
3194 | LookupResult &R, bool NeedsADL, | ||||||||
3195 | bool AcceptInvalidDecl) { | ||||||||
3196 | // If this is a single, fully-resolved result and we don't need ADL, | ||||||||
3197 | // just build an ordinary singleton decl ref. | ||||||||
3198 | if (!NeedsADL && R.isSingleResult() && | ||||||||
3199 | !R.getAsSingle<FunctionTemplateDecl>() && | ||||||||
3200 | !ShouldLookupResultBeMultiVersionOverload(R)) | ||||||||
3201 | return BuildDeclarationNameExpr(SS, R.getLookupNameInfo(), R.getFoundDecl(), | ||||||||
3202 | R.getRepresentativeDecl(), nullptr, | ||||||||
3203 | AcceptInvalidDecl); | ||||||||
3204 | |||||||||
3205 | // We only need to check the declaration if there's exactly one | ||||||||
3206 | // result, because in the overloaded case the results can only be | ||||||||
3207 | // functions and function templates. | ||||||||
3208 | if (R.isSingleResult() && !ShouldLookupResultBeMultiVersionOverload(R) && | ||||||||
3209 | CheckDeclInExpr(*this, R.getNameLoc(), R.getFoundDecl())) | ||||||||
3210 | return ExprError(); | ||||||||
3211 | |||||||||
3212 | // Otherwise, just build an unresolved lookup expression. Suppress | ||||||||
3213 | // any lookup-related diagnostics; we'll hash these out later, when | ||||||||
3214 | // we've picked a target. | ||||||||
3215 | R.suppressDiagnostics(); | ||||||||
3216 | |||||||||
3217 | UnresolvedLookupExpr *ULE | ||||||||
3218 | = UnresolvedLookupExpr::Create(Context, R.getNamingClass(), | ||||||||
3219 | SS.getWithLocInContext(Context), | ||||||||
3220 | R.getLookupNameInfo(), | ||||||||
3221 | NeedsADL, R.isOverloadedResult(), | ||||||||
3222 | R.begin(), R.end()); | ||||||||
3223 | |||||||||
3224 | return ULE; | ||||||||
3225 | } | ||||||||
3226 | |||||||||
3227 | static void | ||||||||
3228 | diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, | ||||||||
3229 | ValueDecl *var, DeclContext *DC); | ||||||||
3230 | |||||||||
3231 | /// Complete semantic analysis for a reference to the given declaration. | ||||||||
3232 | ExprResult Sema::BuildDeclarationNameExpr( | ||||||||
3233 | const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, | ||||||||
3234 | NamedDecl *FoundD, const TemplateArgumentListInfo *TemplateArgs, | ||||||||
3235 | bool AcceptInvalidDecl) { | ||||||||
3236 | assert(D && "Cannot refer to a NULL declaration")(static_cast <bool> (D && "Cannot refer to a NULL declaration" ) ? void (0) : __assert_fail ("D && \"Cannot refer to a NULL declaration\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3236, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3237 | assert(!isa<FunctionTemplateDecl>(D) &&(static_cast <bool> (!isa<FunctionTemplateDecl>(D ) && "Cannot refer unambiguously to a function template" ) ? void (0) : __assert_fail ("!isa<FunctionTemplateDecl>(D) && \"Cannot refer unambiguously to a function template\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3238, __extension__ __PRETTY_FUNCTION__)) | ||||||||
3238 | "Cannot refer unambiguously to a function template")(static_cast <bool> (!isa<FunctionTemplateDecl>(D ) && "Cannot refer unambiguously to a function template" ) ? void (0) : __assert_fail ("!isa<FunctionTemplateDecl>(D) && \"Cannot refer unambiguously to a function template\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3238, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3239 | |||||||||
3240 | SourceLocation Loc = NameInfo.getLoc(); | ||||||||
3241 | if (CheckDeclInExpr(*this, Loc, D)) | ||||||||
3242 | return ExprError(); | ||||||||
3243 | |||||||||
3244 | if (TemplateDecl *Template = dyn_cast<TemplateDecl>(D)) { | ||||||||
3245 | // Specifically diagnose references to class templates that are missing | ||||||||
3246 | // a template argument list. | ||||||||
3247 | diagnoseMissingTemplateArguments(TemplateName(Template), Loc); | ||||||||
3248 | return ExprError(); | ||||||||
3249 | } | ||||||||
3250 | |||||||||
3251 | // Make sure that we're referring to a value. | ||||||||
3252 | if (!isa<ValueDecl, UnresolvedUsingIfExistsDecl>(D)) { | ||||||||
3253 | Diag(Loc, diag::err_ref_non_value) << D << SS.getRange(); | ||||||||
3254 | Diag(D->getLocation(), diag::note_declared_at); | ||||||||
3255 | return ExprError(); | ||||||||
3256 | } | ||||||||
3257 | |||||||||
3258 | // Check whether this declaration can be used. Note that we suppress | ||||||||
3259 | // this check when we're going to perform argument-dependent lookup | ||||||||
3260 | // on this function name, because this might not be the function | ||||||||
3261 | // that overload resolution actually selects. | ||||||||
3262 | if (DiagnoseUseOfDecl(D, Loc)) | ||||||||
3263 | return ExprError(); | ||||||||
3264 | |||||||||
3265 | auto *VD = cast<ValueDecl>(D); | ||||||||
3266 | |||||||||
3267 | // Only create DeclRefExpr's for valid Decl's. | ||||||||
3268 | if (VD->isInvalidDecl() && !AcceptInvalidDecl) | ||||||||
3269 | return ExprError(); | ||||||||
3270 | |||||||||
3271 | // Handle members of anonymous structs and unions. If we got here, | ||||||||
3272 | // and the reference is to a class member indirect field, then this | ||||||||
3273 | // must be the subject of a pointer-to-member expression. | ||||||||
3274 | if (IndirectFieldDecl *indirectField = dyn_cast<IndirectFieldDecl>(VD)) | ||||||||
3275 | if (!indirectField->isCXXClassMember()) | ||||||||
3276 | return BuildAnonymousStructUnionMemberReference(SS, NameInfo.getLoc(), | ||||||||
3277 | indirectField); | ||||||||
3278 | |||||||||
3279 | QualType type = VD->getType(); | ||||||||
3280 | if (type.isNull()) | ||||||||
3281 | return ExprError(); | ||||||||
3282 | ExprValueKind valueKind = VK_PRValue; | ||||||||
3283 | |||||||||
3284 | // In 'T ...V;', the type of the declaration 'V' is 'T...', but the type of | ||||||||
3285 | // a reference to 'V' is simply (unexpanded) 'T'. The type, like the value, | ||||||||
3286 | // is expanded by some outer '...' in the context of the use. | ||||||||
3287 | type = type.getNonPackExpansionType(); | ||||||||
3288 | |||||||||
3289 | switch (D->getKind()) { | ||||||||
3290 | // Ignore all the non-ValueDecl kinds. | ||||||||
3291 | #define ABSTRACT_DECL(kind) | ||||||||
3292 | #define VALUE(type, base) | ||||||||
3293 | #define DECL(type, base) case Decl::type: | ||||||||
3294 | #include "clang/AST/DeclNodes.inc" | ||||||||
3295 | llvm_unreachable("invalid value decl kind")::llvm::llvm_unreachable_internal("invalid value decl kind", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3295); | ||||||||
3296 | |||||||||
3297 | // These shouldn't make it here. | ||||||||
3298 | case Decl::ObjCAtDefsField: | ||||||||
3299 | llvm_unreachable("forming non-member reference to ivar?")::llvm::llvm_unreachable_internal("forming non-member reference to ivar?" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3299); | ||||||||
3300 | |||||||||
3301 | // Enum constants are always r-values and never references. | ||||||||
3302 | // Unresolved using declarations are dependent. | ||||||||
3303 | case Decl::EnumConstant: | ||||||||
3304 | case Decl::UnresolvedUsingValue: | ||||||||
3305 | case Decl::OMPDeclareReduction: | ||||||||
3306 | case Decl::OMPDeclareMapper: | ||||||||
3307 | valueKind = VK_PRValue; | ||||||||
3308 | break; | ||||||||
3309 | |||||||||
3310 | // Fields and indirect fields that got here must be for | ||||||||
3311 | // pointer-to-member expressions; we just call them l-values for | ||||||||
3312 | // internal consistency, because this subexpression doesn't really | ||||||||
3313 | // exist in the high-level semantics. | ||||||||
3314 | case Decl::Field: | ||||||||
3315 | case Decl::IndirectField: | ||||||||
3316 | case Decl::ObjCIvar: | ||||||||
3317 | assert(getLangOpts().CPlusPlus && "building reference to field in C?")(static_cast <bool> (getLangOpts().CPlusPlus && "building reference to field in C?") ? void (0) : __assert_fail ("getLangOpts().CPlusPlus && \"building reference to field in C?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3317, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3318 | |||||||||
3319 | // These can't have reference type in well-formed programs, but | ||||||||
3320 | // for internal consistency we do this anyway. | ||||||||
3321 | type = type.getNonReferenceType(); | ||||||||
3322 | valueKind = VK_LValue; | ||||||||
3323 | break; | ||||||||
3324 | |||||||||
3325 | // Non-type template parameters are either l-values or r-values | ||||||||
3326 | // depending on the type. | ||||||||
3327 | case Decl::NonTypeTemplateParm: { | ||||||||
3328 | if (const ReferenceType *reftype = type->getAs<ReferenceType>()) { | ||||||||
3329 | type = reftype->getPointeeType(); | ||||||||
3330 | valueKind = VK_LValue; // even if the parameter is an r-value reference | ||||||||
3331 | break; | ||||||||
3332 | } | ||||||||
3333 | |||||||||
3334 | // [expr.prim.id.unqual]p2: | ||||||||
3335 | // If the entity is a template parameter object for a template | ||||||||
3336 | // parameter of type T, the type of the expression is const T. | ||||||||
3337 | // [...] The expression is an lvalue if the entity is a [...] template | ||||||||
3338 | // parameter object. | ||||||||
3339 | if (type->isRecordType()) { | ||||||||
3340 | type = type.getUnqualifiedType().withConst(); | ||||||||
3341 | valueKind = VK_LValue; | ||||||||
3342 | break; | ||||||||
3343 | } | ||||||||
3344 | |||||||||
3345 | // For non-references, we need to strip qualifiers just in case | ||||||||
3346 | // the template parameter was declared as 'const int' or whatever. | ||||||||
3347 | valueKind = VK_PRValue; | ||||||||
3348 | type = type.getUnqualifiedType(); | ||||||||
3349 | break; | ||||||||
3350 | } | ||||||||
3351 | |||||||||
3352 | case Decl::Var: | ||||||||
3353 | case Decl::VarTemplateSpecialization: | ||||||||
3354 | case Decl::VarTemplatePartialSpecialization: | ||||||||
3355 | case Decl::Decomposition: | ||||||||
3356 | case Decl::OMPCapturedExpr: | ||||||||
3357 | // In C, "extern void blah;" is valid and is an r-value. | ||||||||
3358 | if (!getLangOpts().CPlusPlus && !type.hasQualifiers() && | ||||||||
3359 | type->isVoidType()) { | ||||||||
3360 | valueKind = VK_PRValue; | ||||||||
3361 | break; | ||||||||
3362 | } | ||||||||
3363 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
3364 | |||||||||
3365 | case Decl::ImplicitParam: | ||||||||
3366 | case Decl::ParmVar: { | ||||||||
3367 | // These are always l-values. | ||||||||
3368 | valueKind = VK_LValue; | ||||||||
3369 | type = type.getNonReferenceType(); | ||||||||
3370 | |||||||||
3371 | // FIXME: Does the addition of const really only apply in | ||||||||
3372 | // potentially-evaluated contexts? Since the variable isn't actually | ||||||||
3373 | // captured in an unevaluated context, it seems that the answer is no. | ||||||||
3374 | if (!isUnevaluatedContext()) { | ||||||||
3375 | QualType CapturedType = getCapturedDeclRefType(cast<VarDecl>(VD), Loc); | ||||||||
3376 | if (!CapturedType.isNull()) | ||||||||
3377 | type = CapturedType; | ||||||||
3378 | } | ||||||||
3379 | |||||||||
3380 | break; | ||||||||
3381 | } | ||||||||
3382 | |||||||||
3383 | case Decl::Binding: { | ||||||||
3384 | // These are always lvalues. | ||||||||
3385 | valueKind = VK_LValue; | ||||||||
3386 | type = type.getNonReferenceType(); | ||||||||
3387 | // FIXME: Support lambda-capture of BindingDecls, once CWG actually | ||||||||
3388 | // decides how that's supposed to work. | ||||||||
3389 | auto *BD = cast<BindingDecl>(VD); | ||||||||
3390 | if (BD->getDeclContext() != CurContext) { | ||||||||
3391 | auto *DD = dyn_cast_or_null<VarDecl>(BD->getDecomposedDecl()); | ||||||||
3392 | if (DD && DD->hasLocalStorage()) | ||||||||
3393 | diagnoseUncapturableValueReference(*this, Loc, BD, CurContext); | ||||||||
3394 | } | ||||||||
3395 | break; | ||||||||
3396 | } | ||||||||
3397 | |||||||||
3398 | case Decl::Function: { | ||||||||
3399 | if (unsigned BID = cast<FunctionDecl>(VD)->getBuiltinID()) { | ||||||||
3400 | if (!Context.BuiltinInfo.isPredefinedLibFunction(BID)) { | ||||||||
3401 | type = Context.BuiltinFnTy; | ||||||||
3402 | valueKind = VK_PRValue; | ||||||||
3403 | break; | ||||||||
3404 | } | ||||||||
3405 | } | ||||||||
3406 | |||||||||
3407 | const FunctionType *fty = type->castAs<FunctionType>(); | ||||||||
3408 | |||||||||
3409 | // If we're referring to a function with an __unknown_anytype | ||||||||
3410 | // result type, make the entire expression __unknown_anytype. | ||||||||
3411 | if (fty->getReturnType() == Context.UnknownAnyTy) { | ||||||||
3412 | type = Context.UnknownAnyTy; | ||||||||
3413 | valueKind = VK_PRValue; | ||||||||
3414 | break; | ||||||||
3415 | } | ||||||||
3416 | |||||||||
3417 | // Functions are l-values in C++. | ||||||||
3418 | if (getLangOpts().CPlusPlus) { | ||||||||
3419 | valueKind = VK_LValue; | ||||||||
3420 | break; | ||||||||
3421 | } | ||||||||
3422 | |||||||||
3423 | // C99 DR 316 says that, if a function type comes from a | ||||||||
3424 | // function definition (without a prototype), that type is only | ||||||||
3425 | // used for checking compatibility. Therefore, when referencing | ||||||||
3426 | // the function, we pretend that we don't have the full function | ||||||||
3427 | // type. | ||||||||
3428 | if (!cast<FunctionDecl>(VD)->hasPrototype() && isa<FunctionProtoType>(fty)) | ||||||||
3429 | type = Context.getFunctionNoProtoType(fty->getReturnType(), | ||||||||
3430 | fty->getExtInfo()); | ||||||||
3431 | |||||||||
3432 | // Functions are r-values in C. | ||||||||
3433 | valueKind = VK_PRValue; | ||||||||
3434 | break; | ||||||||
3435 | } | ||||||||
3436 | |||||||||
3437 | case Decl::CXXDeductionGuide: | ||||||||
3438 | llvm_unreachable("building reference to deduction guide")::llvm::llvm_unreachable_internal("building reference to deduction guide" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3438); | ||||||||
3439 | |||||||||
3440 | case Decl::MSProperty: | ||||||||
3441 | case Decl::MSGuid: | ||||||||
3442 | case Decl::TemplateParamObject: | ||||||||
3443 | // FIXME: Should MSGuidDecl and template parameter objects be subject to | ||||||||
3444 | // capture in OpenMP, or duplicated between host and device? | ||||||||
3445 | valueKind = VK_LValue; | ||||||||
3446 | break; | ||||||||
3447 | |||||||||
3448 | case Decl::CXXMethod: | ||||||||
3449 | // If we're referring to a method with an __unknown_anytype | ||||||||
3450 | // result type, make the entire expression __unknown_anytype. | ||||||||
3451 | // This should only be possible with a type written directly. | ||||||||
3452 | if (const FunctionProtoType *proto = | ||||||||
3453 | dyn_cast<FunctionProtoType>(VD->getType())) | ||||||||
3454 | if (proto->getReturnType() == Context.UnknownAnyTy) { | ||||||||
3455 | type = Context.UnknownAnyTy; | ||||||||
3456 | valueKind = VK_PRValue; | ||||||||
3457 | break; | ||||||||
3458 | } | ||||||||
3459 | |||||||||
3460 | // C++ methods are l-values if static, r-values if non-static. | ||||||||
3461 | if (cast<CXXMethodDecl>(VD)->isStatic()) { | ||||||||
3462 | valueKind = VK_LValue; | ||||||||
3463 | break; | ||||||||
3464 | } | ||||||||
3465 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
3466 | |||||||||
3467 | case Decl::CXXConversion: | ||||||||
3468 | case Decl::CXXDestructor: | ||||||||
3469 | case Decl::CXXConstructor: | ||||||||
3470 | valueKind = VK_PRValue; | ||||||||
3471 | break; | ||||||||
3472 | } | ||||||||
3473 | |||||||||
3474 | return BuildDeclRefExpr(VD, type, valueKind, NameInfo, &SS, FoundD, | ||||||||
3475 | /*FIXME: TemplateKWLoc*/ SourceLocation(), | ||||||||
3476 | TemplateArgs); | ||||||||
3477 | } | ||||||||
3478 | |||||||||
3479 | static void ConvertUTF8ToWideString(unsigned CharByteWidth, StringRef Source, | ||||||||
3480 | SmallString<32> &Target) { | ||||||||
3481 | Target.resize(CharByteWidth * (Source.size() + 1)); | ||||||||
3482 | char *ResultPtr = &Target[0]; | ||||||||
3483 | const llvm::UTF8 *ErrorPtr; | ||||||||
3484 | bool success = | ||||||||
3485 | llvm::ConvertUTF8toWide(CharByteWidth, Source, ResultPtr, ErrorPtr); | ||||||||
3486 | (void)success; | ||||||||
3487 | assert(success)(static_cast <bool> (success) ? void (0) : __assert_fail ("success", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3487, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3488 | Target.resize(ResultPtr - &Target[0]); | ||||||||
3489 | } | ||||||||
3490 | |||||||||
3491 | ExprResult Sema::BuildPredefinedExpr(SourceLocation Loc, | ||||||||
3492 | PredefinedExpr::IdentKind IK) { | ||||||||
3493 | // Pick the current block, lambda, captured statement or function. | ||||||||
3494 | Decl *currentDecl = nullptr; | ||||||||
3495 | if (const BlockScopeInfo *BSI = getCurBlock()) | ||||||||
3496 | currentDecl = BSI->TheDecl; | ||||||||
3497 | else if (const LambdaScopeInfo *LSI = getCurLambda()) | ||||||||
3498 | currentDecl = LSI->CallOperator; | ||||||||
3499 | else if (const CapturedRegionScopeInfo *CSI = getCurCapturedRegion()) | ||||||||
3500 | currentDecl = CSI->TheCapturedDecl; | ||||||||
3501 | else | ||||||||
3502 | currentDecl = getCurFunctionOrMethodDecl(); | ||||||||
3503 | |||||||||
3504 | if (!currentDecl) { | ||||||||
3505 | Diag(Loc, diag::ext_predef_outside_function); | ||||||||
3506 | currentDecl = Context.getTranslationUnitDecl(); | ||||||||
3507 | } | ||||||||
3508 | |||||||||
3509 | QualType ResTy; | ||||||||
3510 | StringLiteral *SL = nullptr; | ||||||||
3511 | if (cast<DeclContext>(currentDecl)->isDependentContext()) | ||||||||
3512 | ResTy = Context.DependentTy; | ||||||||
3513 | else { | ||||||||
3514 | // Pre-defined identifiers are of type char[x], where x is the length of | ||||||||
3515 | // the string. | ||||||||
3516 | auto Str = PredefinedExpr::ComputeName(IK, currentDecl); | ||||||||
3517 | unsigned Length = Str.length(); | ||||||||
3518 | |||||||||
3519 | llvm::APInt LengthI(32, Length + 1); | ||||||||
3520 | if (IK == PredefinedExpr::LFunction || IK == PredefinedExpr::LFuncSig) { | ||||||||
3521 | ResTy = | ||||||||
3522 | Context.adjustStringLiteralBaseType(Context.WideCharTy.withConst()); | ||||||||
3523 | SmallString<32> RawChars; | ||||||||
3524 | ConvertUTF8ToWideString(Context.getTypeSizeInChars(ResTy).getQuantity(), | ||||||||
3525 | Str, RawChars); | ||||||||
3526 | ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, | ||||||||
3527 | ArrayType::Normal, | ||||||||
3528 | /*IndexTypeQuals*/ 0); | ||||||||
3529 | SL = StringLiteral::Create(Context, RawChars, StringLiteral::Wide, | ||||||||
3530 | /*Pascal*/ false, ResTy, Loc); | ||||||||
3531 | } else { | ||||||||
3532 | ResTy = Context.adjustStringLiteralBaseType(Context.CharTy.withConst()); | ||||||||
3533 | ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, | ||||||||
3534 | ArrayType::Normal, | ||||||||
3535 | /*IndexTypeQuals*/ 0); | ||||||||
3536 | SL = StringLiteral::Create(Context, Str, StringLiteral::Ascii, | ||||||||
3537 | /*Pascal*/ false, ResTy, Loc); | ||||||||
3538 | } | ||||||||
3539 | } | ||||||||
3540 | |||||||||
3541 | return PredefinedExpr::Create(Context, Loc, ResTy, IK, SL); | ||||||||
3542 | } | ||||||||
3543 | |||||||||
3544 | ExprResult Sema::BuildSYCLUniqueStableNameExpr(SourceLocation OpLoc, | ||||||||
3545 | SourceLocation LParen, | ||||||||
3546 | SourceLocation RParen, | ||||||||
3547 | TypeSourceInfo *TSI) { | ||||||||
3548 | return SYCLUniqueStableNameExpr::Create(Context, OpLoc, LParen, RParen, TSI); | ||||||||
3549 | } | ||||||||
3550 | |||||||||
3551 | ExprResult Sema::ActOnSYCLUniqueStableNameExpr(SourceLocation OpLoc, | ||||||||
3552 | SourceLocation LParen, | ||||||||
3553 | SourceLocation RParen, | ||||||||
3554 | ParsedType ParsedTy) { | ||||||||
3555 | TypeSourceInfo *TSI = nullptr; | ||||||||
3556 | QualType Ty = GetTypeFromParser(ParsedTy, &TSI); | ||||||||
3557 | |||||||||
3558 | if (Ty.isNull()) | ||||||||
3559 | return ExprError(); | ||||||||
3560 | if (!TSI) | ||||||||
3561 | TSI = Context.getTrivialTypeSourceInfo(Ty, LParen); | ||||||||
3562 | |||||||||
3563 | return BuildSYCLUniqueStableNameExpr(OpLoc, LParen, RParen, TSI); | ||||||||
3564 | } | ||||||||
3565 | |||||||||
3566 | ExprResult Sema::ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind) { | ||||||||
3567 | PredefinedExpr::IdentKind IK; | ||||||||
3568 | |||||||||
3569 | switch (Kind) { | ||||||||
3570 | default: llvm_unreachable("Unknown simple primary expr!")::llvm::llvm_unreachable_internal("Unknown simple primary expr!" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3570); | ||||||||
3571 | case tok::kw___func__: IK = PredefinedExpr::Func; break; // [C99 6.4.2.2] | ||||||||
3572 | case tok::kw___FUNCTION__: IK = PredefinedExpr::Function; break; | ||||||||
3573 | case tok::kw___FUNCDNAME__: IK = PredefinedExpr::FuncDName; break; // [MS] | ||||||||
3574 | case tok::kw___FUNCSIG__: IK = PredefinedExpr::FuncSig; break; // [MS] | ||||||||
3575 | case tok::kw_L__FUNCTION__: IK = PredefinedExpr::LFunction; break; // [MS] | ||||||||
3576 | case tok::kw_L__FUNCSIG__: IK = PredefinedExpr::LFuncSig; break; // [MS] | ||||||||
3577 | case tok::kw___PRETTY_FUNCTION__: IK = PredefinedExpr::PrettyFunction; break; | ||||||||
3578 | } | ||||||||
3579 | |||||||||
3580 | return BuildPredefinedExpr(Loc, IK); | ||||||||
3581 | } | ||||||||
3582 | |||||||||
3583 | ExprResult Sema::ActOnCharacterConstant(const Token &Tok, Scope *UDLScope) { | ||||||||
3584 | SmallString<16> CharBuffer; | ||||||||
3585 | bool Invalid = false; | ||||||||
3586 | StringRef ThisTok = PP.getSpelling(Tok, CharBuffer, &Invalid); | ||||||||
3587 | if (Invalid) | ||||||||
3588 | return ExprError(); | ||||||||
3589 | |||||||||
3590 | CharLiteralParser Literal(ThisTok.begin(), ThisTok.end(), Tok.getLocation(), | ||||||||
3591 | PP, Tok.getKind()); | ||||||||
3592 | if (Literal.hadError()) | ||||||||
3593 | return ExprError(); | ||||||||
3594 | |||||||||
3595 | QualType Ty; | ||||||||
3596 | if (Literal.isWide()) | ||||||||
3597 | Ty = Context.WideCharTy; // L'x' -> wchar_t in C and C++. | ||||||||
3598 | else if (Literal.isUTF8() && getLangOpts().Char8) | ||||||||
3599 | Ty = Context.Char8Ty; // u8'x' -> char8_t when it exists. | ||||||||
3600 | else if (Literal.isUTF16()) | ||||||||
3601 | Ty = Context.Char16Ty; // u'x' -> char16_t in C11 and C++11. | ||||||||
3602 | else if (Literal.isUTF32()) | ||||||||
3603 | Ty = Context.Char32Ty; // U'x' -> char32_t in C11 and C++11. | ||||||||
3604 | else if (!getLangOpts().CPlusPlus || Literal.isMultiChar()) | ||||||||
3605 | Ty = Context.IntTy; // 'x' -> int in C, 'wxyz' -> int in C++. | ||||||||
3606 | else | ||||||||
3607 | Ty = Context.CharTy; // 'x' -> char in C++ | ||||||||
3608 | |||||||||
3609 | CharacterLiteral::CharacterKind Kind = CharacterLiteral::Ascii; | ||||||||
3610 | if (Literal.isWide()) | ||||||||
3611 | Kind = CharacterLiteral::Wide; | ||||||||
3612 | else if (Literal.isUTF16()) | ||||||||
3613 | Kind = CharacterLiteral::UTF16; | ||||||||
3614 | else if (Literal.isUTF32()) | ||||||||
3615 | Kind = CharacterLiteral::UTF32; | ||||||||
3616 | else if (Literal.isUTF8()) | ||||||||
3617 | Kind = CharacterLiteral::UTF8; | ||||||||
3618 | |||||||||
3619 | Expr *Lit = new (Context) CharacterLiteral(Literal.getValue(), Kind, Ty, | ||||||||
3620 | Tok.getLocation()); | ||||||||
3621 | |||||||||
3622 | if (Literal.getUDSuffix().empty()) | ||||||||
3623 | return Lit; | ||||||||
3624 | |||||||||
3625 | // We're building a user-defined literal. | ||||||||
3626 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||||||
3627 | SourceLocation UDSuffixLoc = | ||||||||
3628 | getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); | ||||||||
3629 | |||||||||
3630 | // Make sure we're allowed user-defined literals here. | ||||||||
3631 | if (!UDLScope) | ||||||||
3632 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_character_udl)); | ||||||||
3633 | |||||||||
3634 | // C++11 [lex.ext]p6: The literal L is treated as a call of the form | ||||||||
3635 | // operator "" X (ch) | ||||||||
3636 | return BuildCookedLiteralOperatorCall(*this, UDLScope, UDSuffix, UDSuffixLoc, | ||||||||
3637 | Lit, Tok.getLocation()); | ||||||||
3638 | } | ||||||||
3639 | |||||||||
3640 | ExprResult Sema::ActOnIntegerConstant(SourceLocation Loc, uint64_t Val) { | ||||||||
3641 | unsigned IntSize = Context.getTargetInfo().getIntWidth(); | ||||||||
3642 | return IntegerLiteral::Create(Context, llvm::APInt(IntSize, Val), | ||||||||
3643 | Context.IntTy, Loc); | ||||||||
3644 | } | ||||||||
3645 | |||||||||
3646 | static Expr *BuildFloatingLiteral(Sema &S, NumericLiteralParser &Literal, | ||||||||
3647 | QualType Ty, SourceLocation Loc) { | ||||||||
3648 | const llvm::fltSemantics &Format = S.Context.getFloatTypeSemantics(Ty); | ||||||||
3649 | |||||||||
3650 | using llvm::APFloat; | ||||||||
3651 | APFloat Val(Format); | ||||||||
3652 | |||||||||
3653 | APFloat::opStatus result = Literal.GetFloatValue(Val); | ||||||||
3654 | |||||||||
3655 | // Overflow is always an error, but underflow is only an error if | ||||||||
3656 | // we underflowed to zero (APFloat reports denormals as underflow). | ||||||||
3657 | if ((result & APFloat::opOverflow) || | ||||||||
3658 | ((result & APFloat::opUnderflow) && Val.isZero())) { | ||||||||
3659 | unsigned diagnostic; | ||||||||
3660 | SmallString<20> buffer; | ||||||||
3661 | if (result & APFloat::opOverflow) { | ||||||||
3662 | diagnostic = diag::warn_float_overflow; | ||||||||
3663 | APFloat::getLargest(Format).toString(buffer); | ||||||||
3664 | } else { | ||||||||
3665 | diagnostic = diag::warn_float_underflow; | ||||||||
3666 | APFloat::getSmallest(Format).toString(buffer); | ||||||||
3667 | } | ||||||||
3668 | |||||||||
3669 | S.Diag(Loc, diagnostic) | ||||||||
3670 | << Ty | ||||||||
3671 | << StringRef(buffer.data(), buffer.size()); | ||||||||
3672 | } | ||||||||
3673 | |||||||||
3674 | bool isExact = (result == APFloat::opOK); | ||||||||
3675 | return FloatingLiteral::Create(S.Context, Val, isExact, Ty, Loc); | ||||||||
3676 | } | ||||||||
3677 | |||||||||
3678 | bool Sema::CheckLoopHintExpr(Expr *E, SourceLocation Loc) { | ||||||||
3679 | assert(E && "Invalid expression")(static_cast <bool> (E && "Invalid expression") ? void (0) : __assert_fail ("E && \"Invalid expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3679, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3680 | |||||||||
3681 | if (E->isValueDependent()) | ||||||||
3682 | return false; | ||||||||
3683 | |||||||||
3684 | QualType QT = E->getType(); | ||||||||
3685 | if (!QT->isIntegerType() || QT->isBooleanType() || QT->isCharType()) { | ||||||||
3686 | Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_type) << QT; | ||||||||
3687 | return true; | ||||||||
3688 | } | ||||||||
3689 | |||||||||
3690 | llvm::APSInt ValueAPS; | ||||||||
3691 | ExprResult R = VerifyIntegerConstantExpression(E, &ValueAPS); | ||||||||
3692 | |||||||||
3693 | if (R.isInvalid()) | ||||||||
3694 | return true; | ||||||||
3695 | |||||||||
3696 | bool ValueIsPositive = ValueAPS.isStrictlyPositive(); | ||||||||
3697 | if (!ValueIsPositive || ValueAPS.getActiveBits() > 31) { | ||||||||
3698 | Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_value) | ||||||||
3699 | << toString(ValueAPS, 10) << ValueIsPositive; | ||||||||
3700 | return true; | ||||||||
3701 | } | ||||||||
3702 | |||||||||
3703 | return false; | ||||||||
3704 | } | ||||||||
3705 | |||||||||
3706 | ExprResult Sema::ActOnNumericConstant(const Token &Tok, Scope *UDLScope) { | ||||||||
3707 | // Fast path for a single digit (which is quite common). A single digit | ||||||||
3708 | // cannot have a trigraph, escaped newline, radix prefix, or suffix. | ||||||||
3709 | if (Tok.getLength() == 1) { | ||||||||
3710 | const char Val = PP.getSpellingOfSingleCharacterNumericConstant(Tok); | ||||||||
3711 | return ActOnIntegerConstant(Tok.getLocation(), Val-'0'); | ||||||||
3712 | } | ||||||||
3713 | |||||||||
3714 | SmallString<128> SpellingBuffer; | ||||||||
3715 | // NumericLiteralParser wants to overread by one character. Add padding to | ||||||||
3716 | // the buffer in case the token is copied to the buffer. If getSpelling() | ||||||||
3717 | // returns a StringRef to the memory buffer, it should have a null char at | ||||||||
3718 | // the EOF, so it is also safe. | ||||||||
3719 | SpellingBuffer.resize(Tok.getLength() + 1); | ||||||||
3720 | |||||||||
3721 | // Get the spelling of the token, which eliminates trigraphs, etc. | ||||||||
3722 | bool Invalid = false; | ||||||||
3723 | StringRef TokSpelling = PP.getSpelling(Tok, SpellingBuffer, &Invalid); | ||||||||
3724 | if (Invalid) | ||||||||
3725 | return ExprError(); | ||||||||
3726 | |||||||||
3727 | NumericLiteralParser Literal(TokSpelling, Tok.getLocation(), | ||||||||
3728 | PP.getSourceManager(), PP.getLangOpts(), | ||||||||
3729 | PP.getTargetInfo(), PP.getDiagnostics()); | ||||||||
3730 | if (Literal.hadError) | ||||||||
3731 | return ExprError(); | ||||||||
3732 | |||||||||
3733 | if (Literal.hasUDSuffix()) { | ||||||||
3734 | // We're building a user-defined literal. | ||||||||
3735 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||||||
3736 | SourceLocation UDSuffixLoc = | ||||||||
3737 | getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); | ||||||||
3738 | |||||||||
3739 | // Make sure we're allowed user-defined literals here. | ||||||||
3740 | if (!UDLScope) | ||||||||
3741 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_numeric_udl)); | ||||||||
3742 | |||||||||
3743 | QualType CookedTy; | ||||||||
3744 | if (Literal.isFloatingLiteral()) { | ||||||||
3745 | // C++11 [lex.ext]p4: If S contains a literal operator with parameter type | ||||||||
3746 | // long double, the literal is treated as a call of the form | ||||||||
3747 | // operator "" X (f L) | ||||||||
3748 | CookedTy = Context.LongDoubleTy; | ||||||||
3749 | } else { | ||||||||
3750 | // C++11 [lex.ext]p3: If S contains a literal operator with parameter type | ||||||||
3751 | // unsigned long long, the literal is treated as a call of the form | ||||||||
3752 | // operator "" X (n ULL) | ||||||||
3753 | CookedTy = Context.UnsignedLongLongTy; | ||||||||
3754 | } | ||||||||
3755 | |||||||||
3756 | DeclarationName OpName = | ||||||||
3757 | Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||||||
3758 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||||||
3759 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||||||
3760 | |||||||||
3761 | SourceLocation TokLoc = Tok.getLocation(); | ||||||||
3762 | |||||||||
3763 | // Perform literal operator lookup to determine if we're building a raw | ||||||||
3764 | // literal or a cooked one. | ||||||||
3765 | LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); | ||||||||
3766 | switch (LookupLiteralOperator(UDLScope, R, CookedTy, | ||||||||
3767 | /*AllowRaw*/ true, /*AllowTemplate*/ true, | ||||||||
3768 | /*AllowStringTemplatePack*/ false, | ||||||||
3769 | /*DiagnoseMissing*/ !Literal.isImaginary)) { | ||||||||
3770 | case LOLR_ErrorNoDiagnostic: | ||||||||
3771 | // Lookup failure for imaginary constants isn't fatal, there's still the | ||||||||
3772 | // GNU extension producing _Complex types. | ||||||||
3773 | break; | ||||||||
3774 | case LOLR_Error: | ||||||||
3775 | return ExprError(); | ||||||||
3776 | case LOLR_Cooked: { | ||||||||
3777 | Expr *Lit; | ||||||||
3778 | if (Literal.isFloatingLiteral()) { | ||||||||
3779 | Lit = BuildFloatingLiteral(*this, Literal, CookedTy, Tok.getLocation()); | ||||||||
3780 | } else { | ||||||||
3781 | llvm::APInt ResultVal(Context.getTargetInfo().getLongLongWidth(), 0); | ||||||||
3782 | if (Literal.GetIntegerValue(ResultVal)) | ||||||||
3783 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||||||
3784 | << /* Unsigned */ 1; | ||||||||
3785 | Lit = IntegerLiteral::Create(Context, ResultVal, CookedTy, | ||||||||
3786 | Tok.getLocation()); | ||||||||
3787 | } | ||||||||
3788 | return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); | ||||||||
3789 | } | ||||||||
3790 | |||||||||
3791 | case LOLR_Raw: { | ||||||||
3792 | // C++11 [lit.ext]p3, p4: If S contains a raw literal operator, the | ||||||||
3793 | // literal is treated as a call of the form | ||||||||
3794 | // operator "" X ("n") | ||||||||
3795 | unsigned Length = Literal.getUDSuffixOffset(); | ||||||||
3796 | QualType StrTy = Context.getConstantArrayType( | ||||||||
3797 | Context.adjustStringLiteralBaseType(Context.CharTy.withConst()), | ||||||||
3798 | llvm::APInt(32, Length + 1), nullptr, ArrayType::Normal, 0); | ||||||||
3799 | Expr *Lit = StringLiteral::Create( | ||||||||
3800 | Context, StringRef(TokSpelling.data(), Length), StringLiteral::Ascii, | ||||||||
3801 | /*Pascal*/false, StrTy, &TokLoc, 1); | ||||||||
3802 | return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); | ||||||||
3803 | } | ||||||||
3804 | |||||||||
3805 | case LOLR_Template: { | ||||||||
3806 | // C++11 [lit.ext]p3, p4: Otherwise (S contains a literal operator | ||||||||
3807 | // template), L is treated as a call fo the form | ||||||||
3808 | // operator "" X <'c1', 'c2', ... 'ck'>() | ||||||||
3809 | // where n is the source character sequence c1 c2 ... ck. | ||||||||
3810 | TemplateArgumentListInfo ExplicitArgs; | ||||||||
3811 | unsigned CharBits = Context.getIntWidth(Context.CharTy); | ||||||||
3812 | bool CharIsUnsigned = Context.CharTy->isUnsignedIntegerType(); | ||||||||
3813 | llvm::APSInt Value(CharBits, CharIsUnsigned); | ||||||||
3814 | for (unsigned I = 0, N = Literal.getUDSuffixOffset(); I != N; ++I) { | ||||||||
3815 | Value = TokSpelling[I]; | ||||||||
3816 | TemplateArgument Arg(Context, Value, Context.CharTy); | ||||||||
3817 | TemplateArgumentLocInfo ArgInfo; | ||||||||
3818 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||||||
3819 | } | ||||||||
3820 | return BuildLiteralOperatorCall(R, OpNameInfo, None, TokLoc, | ||||||||
3821 | &ExplicitArgs); | ||||||||
3822 | } | ||||||||
3823 | case LOLR_StringTemplatePack: | ||||||||
3824 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3824); | ||||||||
3825 | } | ||||||||
3826 | } | ||||||||
3827 | |||||||||
3828 | Expr *Res; | ||||||||
3829 | |||||||||
3830 | if (Literal.isFixedPointLiteral()) { | ||||||||
3831 | QualType Ty; | ||||||||
3832 | |||||||||
3833 | if (Literal.isAccum) { | ||||||||
3834 | if (Literal.isHalf) { | ||||||||
3835 | Ty = Context.ShortAccumTy; | ||||||||
3836 | } else if (Literal.isLong) { | ||||||||
3837 | Ty = Context.LongAccumTy; | ||||||||
3838 | } else { | ||||||||
3839 | Ty = Context.AccumTy; | ||||||||
3840 | } | ||||||||
3841 | } else if (Literal.isFract) { | ||||||||
3842 | if (Literal.isHalf) { | ||||||||
3843 | Ty = Context.ShortFractTy; | ||||||||
3844 | } else if (Literal.isLong) { | ||||||||
3845 | Ty = Context.LongFractTy; | ||||||||
3846 | } else { | ||||||||
3847 | Ty = Context.FractTy; | ||||||||
3848 | } | ||||||||
3849 | } | ||||||||
3850 | |||||||||
3851 | if (Literal.isUnsigned) Ty = Context.getCorrespondingUnsignedType(Ty); | ||||||||
3852 | |||||||||
3853 | bool isSigned = !Literal.isUnsigned; | ||||||||
3854 | unsigned scale = Context.getFixedPointScale(Ty); | ||||||||
3855 | unsigned bit_width = Context.getTypeInfo(Ty).Width; | ||||||||
3856 | |||||||||
3857 | llvm::APInt Val(bit_width, 0, isSigned); | ||||||||
3858 | bool Overflowed = Literal.GetFixedPointValue(Val, scale); | ||||||||
3859 | bool ValIsZero = Val.isNullValue() && !Overflowed; | ||||||||
3860 | |||||||||
3861 | auto MaxVal = Context.getFixedPointMax(Ty).getValue(); | ||||||||
3862 | if (Literal.isFract && Val == MaxVal + 1 && !ValIsZero) | ||||||||
3863 | // Clause 6.4.4 - The value of a constant shall be in the range of | ||||||||
3864 | // representable values for its type, with exception for constants of a | ||||||||
3865 | // fract type with a value of exactly 1; such a constant shall denote | ||||||||
3866 | // the maximal value for the type. | ||||||||
3867 | --Val; | ||||||||
3868 | else if (Val.ugt(MaxVal) || Overflowed) | ||||||||
3869 | Diag(Tok.getLocation(), diag::err_too_large_for_fixed_point); | ||||||||
3870 | |||||||||
3871 | Res = FixedPointLiteral::CreateFromRawInt(Context, Val, Ty, | ||||||||
3872 | Tok.getLocation(), scale); | ||||||||
3873 | } else if (Literal.isFloatingLiteral()) { | ||||||||
3874 | QualType Ty; | ||||||||
3875 | if (Literal.isHalf){ | ||||||||
3876 | if (getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts())) | ||||||||
3877 | Ty = Context.HalfTy; | ||||||||
3878 | else { | ||||||||
3879 | Diag(Tok.getLocation(), diag::err_half_const_requires_fp16); | ||||||||
3880 | return ExprError(); | ||||||||
3881 | } | ||||||||
3882 | } else if (Literal.isFloat) | ||||||||
3883 | Ty = Context.FloatTy; | ||||||||
3884 | else if (Literal.isLong) | ||||||||
3885 | Ty = Context.LongDoubleTy; | ||||||||
3886 | else if (Literal.isFloat16) | ||||||||
3887 | Ty = Context.Float16Ty; | ||||||||
3888 | else if (Literal.isFloat128) | ||||||||
3889 | Ty = Context.Float128Ty; | ||||||||
3890 | else | ||||||||
3891 | Ty = Context.DoubleTy; | ||||||||
3892 | |||||||||
3893 | Res = BuildFloatingLiteral(*this, Literal, Ty, Tok.getLocation()); | ||||||||
3894 | |||||||||
3895 | if (Ty == Context.DoubleTy) { | ||||||||
3896 | if (getLangOpts().SinglePrecisionConstants) { | ||||||||
3897 | if (Ty->castAs<BuiltinType>()->getKind() != BuiltinType::Float) { | ||||||||
3898 | Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); | ||||||||
3899 | } | ||||||||
3900 | } else if (getLangOpts().OpenCL && !getOpenCLOptions().isAvailableOption( | ||||||||
3901 | "cl_khr_fp64", getLangOpts())) { | ||||||||
3902 | // Impose single-precision float type when cl_khr_fp64 is not enabled. | ||||||||
3903 | Diag(Tok.getLocation(), diag::warn_double_const_requires_fp64) | ||||||||
3904 | << (getLangOpts().OpenCLVersion >= 300); | ||||||||
3905 | Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); | ||||||||
3906 | } | ||||||||
3907 | } | ||||||||
3908 | } else if (!Literal.isIntegerLiteral()) { | ||||||||
3909 | return ExprError(); | ||||||||
3910 | } else { | ||||||||
3911 | QualType Ty; | ||||||||
3912 | |||||||||
3913 | // 'long long' is a C99 or C++11 feature. | ||||||||
3914 | if (!getLangOpts().C99 && Literal.isLongLong) { | ||||||||
3915 | if (getLangOpts().CPlusPlus) | ||||||||
3916 | Diag(Tok.getLocation(), | ||||||||
3917 | getLangOpts().CPlusPlus11 ? | ||||||||
3918 | diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); | ||||||||
3919 | else | ||||||||
3920 | Diag(Tok.getLocation(), diag::ext_c99_longlong); | ||||||||
3921 | } | ||||||||
3922 | |||||||||
3923 | // 'z/uz' literals are a C++2b feature. | ||||||||
3924 | if (Literal.isSizeT) | ||||||||
3925 | Diag(Tok.getLocation(), getLangOpts().CPlusPlus | ||||||||
3926 | ? getLangOpts().CPlusPlus2b | ||||||||
3927 | ? diag::warn_cxx20_compat_size_t_suffix | ||||||||
3928 | : diag::ext_cxx2b_size_t_suffix | ||||||||
3929 | : diag::err_cxx2b_size_t_suffix); | ||||||||
3930 | |||||||||
3931 | // Get the value in the widest-possible width. | ||||||||
3932 | unsigned MaxWidth = Context.getTargetInfo().getIntMaxTWidth(); | ||||||||
3933 | llvm::APInt ResultVal(MaxWidth, 0); | ||||||||
3934 | |||||||||
3935 | if (Literal.GetIntegerValue(ResultVal)) { | ||||||||
3936 | // If this value didn't fit into uintmax_t, error and force to ull. | ||||||||
3937 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||||||
3938 | << /* Unsigned */ 1; | ||||||||
3939 | Ty = Context.UnsignedLongLongTy; | ||||||||
3940 | assert(Context.getTypeSize(Ty) == ResultVal.getBitWidth() &&(static_cast <bool> (Context.getTypeSize(Ty) == ResultVal .getBitWidth() && "long long is not intmax_t?") ? void (0) : __assert_fail ("Context.getTypeSize(Ty) == ResultVal.getBitWidth() && \"long long is not intmax_t?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3941, __extension__ __PRETTY_FUNCTION__)) | ||||||||
3941 | "long long is not intmax_t?")(static_cast <bool> (Context.getTypeSize(Ty) == ResultVal .getBitWidth() && "long long is not intmax_t?") ? void (0) : __assert_fail ("Context.getTypeSize(Ty) == ResultVal.getBitWidth() && \"long long is not intmax_t?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3941, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3942 | } else { | ||||||||
3943 | // If this value fits into a ULL, try to figure out what else it fits into | ||||||||
3944 | // according to the rules of C99 6.4.4.1p5. | ||||||||
3945 | |||||||||
3946 | // Octal, Hexadecimal, and integers with a U suffix are allowed to | ||||||||
3947 | // be an unsigned int. | ||||||||
3948 | bool AllowUnsigned = Literal.isUnsigned || Literal.getRadix() != 10; | ||||||||
3949 | |||||||||
3950 | // Check from smallest to largest, picking the smallest type we can. | ||||||||
3951 | unsigned Width = 0; | ||||||||
3952 | |||||||||
3953 | // Microsoft specific integer suffixes are explicitly sized. | ||||||||
3954 | if (Literal.MicrosoftInteger) { | ||||||||
3955 | if (Literal.MicrosoftInteger == 8 && !Literal.isUnsigned) { | ||||||||
3956 | Width = 8; | ||||||||
3957 | Ty = Context.CharTy; | ||||||||
3958 | } else { | ||||||||
3959 | Width = Literal.MicrosoftInteger; | ||||||||
3960 | Ty = Context.getIntTypeForBitwidth(Width, | ||||||||
3961 | /*Signed=*/!Literal.isUnsigned); | ||||||||
3962 | } | ||||||||
3963 | } | ||||||||
3964 | |||||||||
3965 | // Check C++2b size_t literals. | ||||||||
3966 | if (Literal.isSizeT) { | ||||||||
3967 | assert(!Literal.MicrosoftInteger &&(static_cast <bool> (!Literal.MicrosoftInteger && "size_t literals can't be Microsoft literals") ? void (0) : __assert_fail ("!Literal.MicrosoftInteger && \"size_t literals can't be Microsoft literals\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3968, __extension__ __PRETTY_FUNCTION__)) | ||||||||
3968 | "size_t literals can't be Microsoft literals")(static_cast <bool> (!Literal.MicrosoftInteger && "size_t literals can't be Microsoft literals") ? void (0) : __assert_fail ("!Literal.MicrosoftInteger && \"size_t literals can't be Microsoft literals\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 3968, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3969 | unsigned SizeTSize = Context.getTargetInfo().getTypeWidth( | ||||||||
3970 | Context.getTargetInfo().getSizeType()); | ||||||||
3971 | |||||||||
3972 | // Does it fit in size_t? | ||||||||
3973 | if (ResultVal.isIntN(SizeTSize)) { | ||||||||
3974 | // Does it fit in ssize_t? | ||||||||
3975 | if (!Literal.isUnsigned && ResultVal[SizeTSize - 1] == 0) | ||||||||
3976 | Ty = Context.getSignedSizeType(); | ||||||||
3977 | else if (AllowUnsigned) | ||||||||
3978 | Ty = Context.getSizeType(); | ||||||||
3979 | Width = SizeTSize; | ||||||||
3980 | } | ||||||||
3981 | } | ||||||||
3982 | |||||||||
3983 | if (Ty.isNull() && !Literal.isLong && !Literal.isLongLong && | ||||||||
3984 | !Literal.isSizeT) { | ||||||||
3985 | // Are int/unsigned possibilities? | ||||||||
3986 | unsigned IntSize = Context.getTargetInfo().getIntWidth(); | ||||||||
3987 | |||||||||
3988 | // Does it fit in a unsigned int? | ||||||||
3989 | if (ResultVal.isIntN(IntSize)) { | ||||||||
3990 | // Does it fit in a signed int? | ||||||||
3991 | if (!Literal.isUnsigned && ResultVal[IntSize-1] == 0) | ||||||||
3992 | Ty = Context.IntTy; | ||||||||
3993 | else if (AllowUnsigned) | ||||||||
3994 | Ty = Context.UnsignedIntTy; | ||||||||
3995 | Width = IntSize; | ||||||||
3996 | } | ||||||||
3997 | } | ||||||||
3998 | |||||||||
3999 | // Are long/unsigned long possibilities? | ||||||||
4000 | if (Ty.isNull() && !Literal.isLongLong && !Literal.isSizeT) { | ||||||||
4001 | unsigned LongSize = Context.getTargetInfo().getLongWidth(); | ||||||||
4002 | |||||||||
4003 | // Does it fit in a unsigned long? | ||||||||
4004 | if (ResultVal.isIntN(LongSize)) { | ||||||||
4005 | // Does it fit in a signed long? | ||||||||
4006 | if (!Literal.isUnsigned && ResultVal[LongSize-1] == 0) | ||||||||
4007 | Ty = Context.LongTy; | ||||||||
4008 | else if (AllowUnsigned) | ||||||||
4009 | Ty = Context.UnsignedLongTy; | ||||||||
4010 | // Check according to the rules of C90 6.1.3.2p5. C++03 [lex.icon]p2 | ||||||||
4011 | // is compatible. | ||||||||
4012 | else if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11) { | ||||||||
4013 | const unsigned LongLongSize = | ||||||||
4014 | Context.getTargetInfo().getLongLongWidth(); | ||||||||
4015 | Diag(Tok.getLocation(), | ||||||||
4016 | getLangOpts().CPlusPlus | ||||||||
4017 | ? Literal.isLong | ||||||||
4018 | ? diag::warn_old_implicitly_unsigned_long_cxx | ||||||||
4019 | : /*C++98 UB*/ diag:: | ||||||||
4020 | ext_old_implicitly_unsigned_long_cxx | ||||||||
4021 | : diag::warn_old_implicitly_unsigned_long) | ||||||||
4022 | << (LongLongSize > LongSize ? /*will have type 'long long'*/ 0 | ||||||||
4023 | : /*will be ill-formed*/ 1); | ||||||||
4024 | Ty = Context.UnsignedLongTy; | ||||||||
4025 | } | ||||||||
4026 | Width = LongSize; | ||||||||
4027 | } | ||||||||
4028 | } | ||||||||
4029 | |||||||||
4030 | // Check long long if needed. | ||||||||
4031 | if (Ty.isNull() && !Literal.isSizeT) { | ||||||||
4032 | unsigned LongLongSize = Context.getTargetInfo().getLongLongWidth(); | ||||||||
4033 | |||||||||
4034 | // Does it fit in a unsigned long long? | ||||||||
4035 | if (ResultVal.isIntN(LongLongSize)) { | ||||||||
4036 | // Does it fit in a signed long long? | ||||||||
4037 | // To be compatible with MSVC, hex integer literals ending with the | ||||||||
4038 | // LL or i64 suffix are always signed in Microsoft mode. | ||||||||
4039 | if (!Literal.isUnsigned && (ResultVal[LongLongSize-1] == 0 || | ||||||||
4040 | (getLangOpts().MSVCCompat && Literal.isLongLong))) | ||||||||
4041 | Ty = Context.LongLongTy; | ||||||||
4042 | else if (AllowUnsigned) | ||||||||
4043 | Ty = Context.UnsignedLongLongTy; | ||||||||
4044 | Width = LongLongSize; | ||||||||
4045 | } | ||||||||
4046 | } | ||||||||
4047 | |||||||||
4048 | // If we still couldn't decide a type, we either have 'size_t' literal | ||||||||
4049 | // that is out of range, or a decimal literal that does not fit in a | ||||||||
4050 | // signed long long and has no U suffix. | ||||||||
4051 | if (Ty.isNull()) { | ||||||||
4052 | if (Literal.isSizeT) | ||||||||
4053 | Diag(Tok.getLocation(), diag::err_size_t_literal_too_large) | ||||||||
4054 | << Literal.isUnsigned; | ||||||||
4055 | else | ||||||||
4056 | Diag(Tok.getLocation(), | ||||||||
4057 | diag::ext_integer_literal_too_large_for_signed); | ||||||||
4058 | Ty = Context.UnsignedLongLongTy; | ||||||||
4059 | Width = Context.getTargetInfo().getLongLongWidth(); | ||||||||
4060 | } | ||||||||
4061 | |||||||||
4062 | if (ResultVal.getBitWidth() != Width) | ||||||||
4063 | ResultVal = ResultVal.trunc(Width); | ||||||||
4064 | } | ||||||||
4065 | Res = IntegerLiteral::Create(Context, ResultVal, Ty, Tok.getLocation()); | ||||||||
4066 | } | ||||||||
4067 | |||||||||
4068 | // If this is an imaginary literal, create the ImaginaryLiteral wrapper. | ||||||||
4069 | if (Literal.isImaginary) { | ||||||||
4070 | Res = new (Context) ImaginaryLiteral(Res, | ||||||||
4071 | Context.getComplexType(Res->getType())); | ||||||||
4072 | |||||||||
4073 | Diag(Tok.getLocation(), diag::ext_imaginary_constant); | ||||||||
4074 | } | ||||||||
4075 | return Res; | ||||||||
4076 | } | ||||||||
4077 | |||||||||
4078 | ExprResult Sema::ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E) { | ||||||||
4079 | assert(E && "ActOnParenExpr() missing expr")(static_cast <bool> (E && "ActOnParenExpr() missing expr" ) ? void (0) : __assert_fail ("E && \"ActOnParenExpr() missing expr\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4079, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4080 | QualType ExprTy = E->getType(); | ||||||||
4081 | if (getLangOpts().ProtectParens && CurFPFeatures.getAllowFPReassociate() && | ||||||||
4082 | !E->isLValue() && ExprTy->hasFloatingRepresentation()) | ||||||||
4083 | return BuildBuiltinCallExpr(R, Builtin::BI__arithmetic_fence, E); | ||||||||
4084 | return new (Context) ParenExpr(L, R, E); | ||||||||
4085 | } | ||||||||
4086 | |||||||||
4087 | static bool CheckVecStepTraitOperandType(Sema &S, QualType T, | ||||||||
4088 | SourceLocation Loc, | ||||||||
4089 | SourceRange ArgRange) { | ||||||||
4090 | // [OpenCL 1.1 6.11.12] "The vec_step built-in function takes a built-in | ||||||||
4091 | // scalar or vector data type argument..." | ||||||||
4092 | // Every built-in scalar type (OpenCL 1.1 6.1.1) is either an arithmetic | ||||||||
4093 | // type (C99 6.2.5p18) or void. | ||||||||
4094 | if (!(T->isArithmeticType() || T->isVoidType() || T->isVectorType())) { | ||||||||
4095 | S.Diag(Loc, diag::err_vecstep_non_scalar_vector_type) | ||||||||
4096 | << T << ArgRange; | ||||||||
4097 | return true; | ||||||||
4098 | } | ||||||||
4099 | |||||||||
4100 | assert((T->isVoidType() || !T->isIncompleteType()) &&(static_cast <bool> ((T->isVoidType() || !T->isIncompleteType ()) && "Scalar types should always be complete") ? void (0) : __assert_fail ("(T->isVoidType() || !T->isIncompleteType()) && \"Scalar types should always be complete\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4101, __extension__ __PRETTY_FUNCTION__)) | ||||||||
4101 | "Scalar types should always be complete")(static_cast <bool> ((T->isVoidType() || !T->isIncompleteType ()) && "Scalar types should always be complete") ? void (0) : __assert_fail ("(T->isVoidType() || !T->isIncompleteType()) && \"Scalar types should always be complete\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4101, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4102 | return false; | ||||||||
4103 | } | ||||||||
4104 | |||||||||
4105 | static bool CheckExtensionTraitOperandType(Sema &S, QualType T, | ||||||||
4106 | SourceLocation Loc, | ||||||||
4107 | SourceRange ArgRange, | ||||||||
4108 | UnaryExprOrTypeTrait TraitKind) { | ||||||||
4109 | // Invalid types must be hard errors for SFINAE in C++. | ||||||||
4110 | if (S.LangOpts.CPlusPlus) | ||||||||
4111 | return true; | ||||||||
4112 | |||||||||
4113 | // C99 6.5.3.4p1: | ||||||||
4114 | if (T->isFunctionType() && | ||||||||
4115 | (TraitKind == UETT_SizeOf || TraitKind == UETT_AlignOf || | ||||||||
4116 | TraitKind == UETT_PreferredAlignOf)) { | ||||||||
4117 | // sizeof(function)/alignof(function) is allowed as an extension. | ||||||||
4118 | S.Diag(Loc, diag::ext_sizeof_alignof_function_type) | ||||||||
4119 | << getTraitSpelling(TraitKind) << ArgRange; | ||||||||
4120 | return false; | ||||||||
4121 | } | ||||||||
4122 | |||||||||
4123 | // Allow sizeof(void)/alignof(void) as an extension, unless in OpenCL where | ||||||||
4124 | // this is an error (OpenCL v1.1 s6.3.k) | ||||||||
4125 | if (T->isVoidType()) { | ||||||||
4126 | unsigned DiagID = S.LangOpts.OpenCL ? diag::err_opencl_sizeof_alignof_type | ||||||||
4127 | : diag::ext_sizeof_alignof_void_type; | ||||||||
4128 | S.Diag(Loc, DiagID) << getTraitSpelling(TraitKind) << ArgRange; | ||||||||
4129 | return false; | ||||||||
4130 | } | ||||||||
4131 | |||||||||
4132 | return true; | ||||||||
4133 | } | ||||||||
4134 | |||||||||
4135 | static bool CheckObjCTraitOperandConstraints(Sema &S, QualType T, | ||||||||
4136 | SourceLocation Loc, | ||||||||
4137 | SourceRange ArgRange, | ||||||||
4138 | UnaryExprOrTypeTrait TraitKind) { | ||||||||
4139 | // Reject sizeof(interface) and sizeof(interface<proto>) if the | ||||||||
4140 | // runtime doesn't allow it. | ||||||||
4141 | if (!S.LangOpts.ObjCRuntime.allowsSizeofAlignof() && T->isObjCObjectType()) { | ||||||||
4142 | S.Diag(Loc, diag::err_sizeof_nonfragile_interface) | ||||||||
4143 | << T << (TraitKind == UETT_SizeOf) | ||||||||
4144 | << ArgRange; | ||||||||
4145 | return true; | ||||||||
4146 | } | ||||||||
4147 | |||||||||
4148 | return false; | ||||||||
4149 | } | ||||||||
4150 | |||||||||
4151 | /// Check whether E is a pointer from a decayed array type (the decayed | ||||||||
4152 | /// pointer type is equal to T) and emit a warning if it is. | ||||||||
4153 | static void warnOnSizeofOnArrayDecay(Sema &S, SourceLocation Loc, QualType T, | ||||||||
4154 | Expr *E) { | ||||||||
4155 | // Don't warn if the operation changed the type. | ||||||||
4156 | if (T != E->getType()) | ||||||||
4157 | return; | ||||||||
4158 | |||||||||
4159 | // Now look for array decays. | ||||||||
4160 | ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E); | ||||||||
4161 | if (!ICE || ICE->getCastKind() != CK_ArrayToPointerDecay) | ||||||||
4162 | return; | ||||||||
4163 | |||||||||
4164 | S.Diag(Loc, diag::warn_sizeof_array_decay) << ICE->getSourceRange() | ||||||||
4165 | << ICE->getType() | ||||||||
4166 | << ICE->getSubExpr()->getType(); | ||||||||
4167 | } | ||||||||
4168 | |||||||||
4169 | /// Check the constraints on expression operands to unary type expression | ||||||||
4170 | /// and type traits. | ||||||||
4171 | /// | ||||||||
4172 | /// Completes any types necessary and validates the constraints on the operand | ||||||||
4173 | /// expression. The logic mostly mirrors the type-based overload, but may modify | ||||||||
4174 | /// the expression as it completes the type for that expression through template | ||||||||
4175 | /// instantiation, etc. | ||||||||
4176 | bool Sema::CheckUnaryExprOrTypeTraitOperand(Expr *E, | ||||||||
4177 | UnaryExprOrTypeTrait ExprKind) { | ||||||||
4178 | QualType ExprTy = E->getType(); | ||||||||
4179 | assert(!ExprTy->isReferenceType())(static_cast <bool> (!ExprTy->isReferenceType()) ? void (0) : __assert_fail ("!ExprTy->isReferenceType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4179, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4180 | |||||||||
4181 | bool IsUnevaluatedOperand = | ||||||||
4182 | (ExprKind == UETT_SizeOf || ExprKind == UETT_AlignOf || | ||||||||
4183 | ExprKind == UETT_PreferredAlignOf || ExprKind == UETT_VecStep); | ||||||||
4184 | if (IsUnevaluatedOperand) { | ||||||||
4185 | ExprResult Result = CheckUnevaluatedOperand(E); | ||||||||
4186 | if (Result.isInvalid()) | ||||||||
4187 | return true; | ||||||||
4188 | E = Result.get(); | ||||||||
4189 | } | ||||||||
4190 | |||||||||
4191 | // The operand for sizeof and alignof is in an unevaluated expression context, | ||||||||
4192 | // so side effects could result in unintended consequences. | ||||||||
4193 | // Exclude instantiation-dependent expressions, because 'sizeof' is sometimes | ||||||||
4194 | // used to build SFINAE gadgets. | ||||||||
4195 | // FIXME: Should we consider instantiation-dependent operands to 'alignof'? | ||||||||
4196 | if (IsUnevaluatedOperand && !inTemplateInstantiation() && | ||||||||
4197 | !E->isInstantiationDependent() && | ||||||||
4198 | E->HasSideEffects(Context, false)) | ||||||||
4199 | Diag(E->getExprLoc(), diag::warn_side_effects_unevaluated_context); | ||||||||
4200 | |||||||||
4201 | if (ExprKind == UETT_VecStep) | ||||||||
4202 | return CheckVecStepTraitOperandType(*this, ExprTy, E->getExprLoc(), | ||||||||
4203 | E->getSourceRange()); | ||||||||
4204 | |||||||||
4205 | // Explicitly list some types as extensions. | ||||||||
4206 | if (!CheckExtensionTraitOperandType(*this, ExprTy, E->getExprLoc(), | ||||||||
4207 | E->getSourceRange(), ExprKind)) | ||||||||
4208 | return false; | ||||||||
4209 | |||||||||
4210 | // 'alignof' applied to an expression only requires the base element type of | ||||||||
4211 | // the expression to be complete. 'sizeof' requires the expression's type to | ||||||||
4212 | // be complete (and will attempt to complete it if it's an array of unknown | ||||||||
4213 | // bound). | ||||||||
4214 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||||||
4215 | if (RequireCompleteSizedType( | ||||||||
4216 | E->getExprLoc(), Context.getBaseElementType(E->getType()), | ||||||||
4217 | diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||||||
4218 | getTraitSpelling(ExprKind), E->getSourceRange())) | ||||||||
4219 | return true; | ||||||||
4220 | } else { | ||||||||
4221 | if (RequireCompleteSizedExprType( | ||||||||
4222 | E, diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||||||
4223 | getTraitSpelling(ExprKind), E->getSourceRange())) | ||||||||
4224 | return true; | ||||||||
4225 | } | ||||||||
4226 | |||||||||
4227 | // Completing the expression's type may have changed it. | ||||||||
4228 | ExprTy = E->getType(); | ||||||||
4229 | assert(!ExprTy->isReferenceType())(static_cast <bool> (!ExprTy->isReferenceType()) ? void (0) : __assert_fail ("!ExprTy->isReferenceType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4229, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4230 | |||||||||
4231 | if (ExprTy->isFunctionType()) { | ||||||||
4232 | Diag(E->getExprLoc(), diag::err_sizeof_alignof_function_type) | ||||||||
4233 | << getTraitSpelling(ExprKind) << E->getSourceRange(); | ||||||||
4234 | return true; | ||||||||
4235 | } | ||||||||
4236 | |||||||||
4237 | if (CheckObjCTraitOperandConstraints(*this, ExprTy, E->getExprLoc(), | ||||||||
4238 | E->getSourceRange(), ExprKind)) | ||||||||
4239 | return true; | ||||||||
4240 | |||||||||
4241 | if (ExprKind == UETT_SizeOf) { | ||||||||
4242 | if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { | ||||||||
4243 | if (ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(DeclRef->getFoundDecl())) { | ||||||||
4244 | QualType OType = PVD->getOriginalType(); | ||||||||
4245 | QualType Type = PVD->getType(); | ||||||||
4246 | if (Type->isPointerType() && OType->isArrayType()) { | ||||||||
4247 | Diag(E->getExprLoc(), diag::warn_sizeof_array_param) | ||||||||
4248 | << Type << OType; | ||||||||
4249 | Diag(PVD->getLocation(), diag::note_declared_at); | ||||||||
4250 | } | ||||||||
4251 | } | ||||||||
4252 | } | ||||||||
4253 | |||||||||
4254 | // Warn on "sizeof(array op x)" and "sizeof(x op array)", where the array | ||||||||
4255 | // decays into a pointer and returns an unintended result. This is most | ||||||||
4256 | // likely a typo for "sizeof(array) op x". | ||||||||
4257 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E->IgnoreParens())) { | ||||||||
4258 | warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), | ||||||||
4259 | BO->getLHS()); | ||||||||
4260 | warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), | ||||||||
4261 | BO->getRHS()); | ||||||||
4262 | } | ||||||||
4263 | } | ||||||||
4264 | |||||||||
4265 | return false; | ||||||||
4266 | } | ||||||||
4267 | |||||||||
4268 | /// Check the constraints on operands to unary expression and type | ||||||||
4269 | /// traits. | ||||||||
4270 | /// | ||||||||
4271 | /// This will complete any types necessary, and validate the various constraints | ||||||||
4272 | /// on those operands. | ||||||||
4273 | /// | ||||||||
4274 | /// The UsualUnaryConversions() function is *not* called by this routine. | ||||||||
4275 | /// C99 6.3.2.1p[2-4] all state: | ||||||||
4276 | /// Except when it is the operand of the sizeof operator ... | ||||||||
4277 | /// | ||||||||
4278 | /// C++ [expr.sizeof]p4 | ||||||||
4279 | /// The lvalue-to-rvalue, array-to-pointer, and function-to-pointer | ||||||||
4280 | /// standard conversions are not applied to the operand of sizeof. | ||||||||
4281 | /// | ||||||||
4282 | /// This policy is followed for all of the unary trait expressions. | ||||||||
4283 | bool Sema::CheckUnaryExprOrTypeTraitOperand(QualType ExprType, | ||||||||
4284 | SourceLocation OpLoc, | ||||||||
4285 | SourceRange ExprRange, | ||||||||
4286 | UnaryExprOrTypeTrait ExprKind) { | ||||||||
4287 | if (ExprType->isDependentType()) | ||||||||
4288 | return false; | ||||||||
4289 | |||||||||
4290 | // C++ [expr.sizeof]p2: | ||||||||
4291 | // When applied to a reference or a reference type, the result | ||||||||
4292 | // is the size of the referenced type. | ||||||||
4293 | // C++11 [expr.alignof]p3: | ||||||||
4294 | // When alignof is applied to a reference type, the result | ||||||||
4295 | // shall be the alignment of the referenced type. | ||||||||
4296 | if (const ReferenceType *Ref = ExprType->getAs<ReferenceType>()) | ||||||||
4297 | ExprType = Ref->getPointeeType(); | ||||||||
4298 | |||||||||
4299 | // C11 6.5.3.4/3, C++11 [expr.alignof]p3: | ||||||||
4300 | // When alignof or _Alignof is applied to an array type, the result | ||||||||
4301 | // is the alignment of the element type. | ||||||||
4302 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf || | ||||||||
4303 | ExprKind == UETT_OpenMPRequiredSimdAlign) | ||||||||
4304 | ExprType = Context.getBaseElementType(ExprType); | ||||||||
4305 | |||||||||
4306 | if (ExprKind == UETT_VecStep) | ||||||||
4307 | return CheckVecStepTraitOperandType(*this, ExprType, OpLoc, ExprRange); | ||||||||
4308 | |||||||||
4309 | // Explicitly list some types as extensions. | ||||||||
4310 | if (!CheckExtensionTraitOperandType(*this, ExprType, OpLoc, ExprRange, | ||||||||
4311 | ExprKind)) | ||||||||
4312 | return false; | ||||||||
4313 | |||||||||
4314 | if (RequireCompleteSizedType( | ||||||||
4315 | OpLoc, ExprType, diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||||||
4316 | getTraitSpelling(ExprKind), ExprRange)) | ||||||||
4317 | return true; | ||||||||
4318 | |||||||||
4319 | if (ExprType->isFunctionType()) { | ||||||||
4320 | Diag(OpLoc, diag::err_sizeof_alignof_function_type) | ||||||||
4321 | << getTraitSpelling(ExprKind) << ExprRange; | ||||||||
4322 | return true; | ||||||||
4323 | } | ||||||||
4324 | |||||||||
4325 | if (CheckObjCTraitOperandConstraints(*this, ExprType, OpLoc, ExprRange, | ||||||||
4326 | ExprKind)) | ||||||||
4327 | return true; | ||||||||
4328 | |||||||||
4329 | return false; | ||||||||
4330 | } | ||||||||
4331 | |||||||||
4332 | static bool CheckAlignOfExpr(Sema &S, Expr *E, UnaryExprOrTypeTrait ExprKind) { | ||||||||
4333 | // Cannot know anything else if the expression is dependent. | ||||||||
4334 | if (E->isTypeDependent()) | ||||||||
4335 | return false; | ||||||||
4336 | |||||||||
4337 | if (E->getObjectKind() == OK_BitField) { | ||||||||
4338 | S.Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) | ||||||||
4339 | << 1 << E->getSourceRange(); | ||||||||
4340 | return true; | ||||||||
4341 | } | ||||||||
4342 | |||||||||
4343 | ValueDecl *D = nullptr; | ||||||||
4344 | Expr *Inner = E->IgnoreParens(); | ||||||||
4345 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Inner)) { | ||||||||
4346 | D = DRE->getDecl(); | ||||||||
4347 | } else if (MemberExpr *ME = dyn_cast<MemberExpr>(Inner)) { | ||||||||
4348 | D = ME->getMemberDecl(); | ||||||||
4349 | } | ||||||||
4350 | |||||||||
4351 | // If it's a field, require the containing struct to have a | ||||||||
4352 | // complete definition so that we can compute the layout. | ||||||||
4353 | // | ||||||||
4354 | // This can happen in C++11 onwards, either by naming the member | ||||||||
4355 | // in a way that is not transformed into a member access expression | ||||||||
4356 | // (in an unevaluated operand, for instance), or by naming the member | ||||||||
4357 | // in a trailing-return-type. | ||||||||
4358 | // | ||||||||
4359 | // For the record, since __alignof__ on expressions is a GCC | ||||||||
4360 | // extension, GCC seems to permit this but always gives the | ||||||||
4361 | // nonsensical answer 0. | ||||||||
4362 | // | ||||||||
4363 | // We don't really need the layout here --- we could instead just | ||||||||
4364 | // directly check for all the appropriate alignment-lowing | ||||||||
4365 | // attributes --- but that would require duplicating a lot of | ||||||||
4366 | // logic that just isn't worth duplicating for such a marginal | ||||||||
4367 | // use-case. | ||||||||
4368 | if (FieldDecl *FD = dyn_cast_or_null<FieldDecl>(D)) { | ||||||||
4369 | // Fast path this check, since we at least know the record has a | ||||||||
4370 | // definition if we can find a member of it. | ||||||||
4371 | if (!FD->getParent()->isCompleteDefinition()) { | ||||||||
4372 | S.Diag(E->getExprLoc(), diag::err_alignof_member_of_incomplete_type) | ||||||||
4373 | << E->getSourceRange(); | ||||||||
4374 | return true; | ||||||||
4375 | } | ||||||||
4376 | |||||||||
4377 | // Otherwise, if it's a field, and the field doesn't have | ||||||||
4378 | // reference type, then it must have a complete type (or be a | ||||||||
4379 | // flexible array member, which we explicitly want to | ||||||||
4380 | // white-list anyway), which makes the following checks trivial. | ||||||||
4381 | if (!FD->getType()->isReferenceType()) | ||||||||
4382 | return false; | ||||||||
4383 | } | ||||||||
4384 | |||||||||
4385 | return S.CheckUnaryExprOrTypeTraitOperand(E, ExprKind); | ||||||||
4386 | } | ||||||||
4387 | |||||||||
4388 | bool Sema::CheckVecStepExpr(Expr *E) { | ||||||||
4389 | E = E->IgnoreParens(); | ||||||||
4390 | |||||||||
4391 | // Cannot know anything else if the expression is dependent. | ||||||||
4392 | if (E->isTypeDependent()) | ||||||||
4393 | return false; | ||||||||
4394 | |||||||||
4395 | return CheckUnaryExprOrTypeTraitOperand(E, UETT_VecStep); | ||||||||
4396 | } | ||||||||
4397 | |||||||||
4398 | static void captureVariablyModifiedType(ASTContext &Context, QualType T, | ||||||||
4399 | CapturingScopeInfo *CSI) { | ||||||||
4400 | assert(T->isVariablyModifiedType())(static_cast <bool> (T->isVariablyModifiedType()) ? void (0) : __assert_fail ("T->isVariablyModifiedType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4400, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4401 | assert(CSI != nullptr)(static_cast <bool> (CSI != nullptr) ? void (0) : __assert_fail ("CSI != nullptr", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4401, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4402 | |||||||||
4403 | // We're going to walk down into the type and look for VLA expressions. | ||||||||
4404 | do { | ||||||||
4405 | const Type *Ty = T.getTypePtr(); | ||||||||
4406 | switch (Ty->getTypeClass()) { | ||||||||
4407 | #define TYPE(Class, Base) | ||||||||
4408 | #define ABSTRACT_TYPE(Class, Base) | ||||||||
4409 | #define NON_CANONICAL_TYPE(Class, Base) | ||||||||
4410 | #define DEPENDENT_TYPE(Class, Base) case Type::Class: | ||||||||
4411 | #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) | ||||||||
4412 | #include "clang/AST/TypeNodes.inc" | ||||||||
4413 | T = QualType(); | ||||||||
4414 | break; | ||||||||
4415 | // These types are never variably-modified. | ||||||||
4416 | case Type::Builtin: | ||||||||
4417 | case Type::Complex: | ||||||||
4418 | case Type::Vector: | ||||||||
4419 | case Type::ExtVector: | ||||||||
4420 | case Type::ConstantMatrix: | ||||||||
4421 | case Type::Record: | ||||||||
4422 | case Type::Enum: | ||||||||
4423 | case Type::Elaborated: | ||||||||
4424 | case Type::TemplateSpecialization: | ||||||||
4425 | case Type::ObjCObject: | ||||||||
4426 | case Type::ObjCInterface: | ||||||||
4427 | case Type::ObjCObjectPointer: | ||||||||
4428 | case Type::ObjCTypeParam: | ||||||||
4429 | case Type::Pipe: | ||||||||
4430 | case Type::ExtInt: | ||||||||
4431 | llvm_unreachable("type class is never variably-modified!")::llvm::llvm_unreachable_internal("type class is never variably-modified!" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4431); | ||||||||
4432 | case Type::Adjusted: | ||||||||
4433 | T = cast<AdjustedType>(Ty)->getOriginalType(); | ||||||||
4434 | break; | ||||||||
4435 | case Type::Decayed: | ||||||||
4436 | T = cast<DecayedType>(Ty)->getPointeeType(); | ||||||||
4437 | break; | ||||||||
4438 | case Type::Pointer: | ||||||||
4439 | T = cast<PointerType>(Ty)->getPointeeType(); | ||||||||
4440 | break; | ||||||||
4441 | case Type::BlockPointer: | ||||||||
4442 | T = cast<BlockPointerType>(Ty)->getPointeeType(); | ||||||||
4443 | break; | ||||||||
4444 | case Type::LValueReference: | ||||||||
4445 | case Type::RValueReference: | ||||||||
4446 | T = cast<ReferenceType>(Ty)->getPointeeType(); | ||||||||
4447 | break; | ||||||||
4448 | case Type::MemberPointer: | ||||||||
4449 | T = cast<MemberPointerType>(Ty)->getPointeeType(); | ||||||||
4450 | break; | ||||||||
4451 | case Type::ConstantArray: | ||||||||
4452 | case Type::IncompleteArray: | ||||||||
4453 | // Losing element qualification here is fine. | ||||||||
4454 | T = cast<ArrayType>(Ty)->getElementType(); | ||||||||
4455 | break; | ||||||||
4456 | case Type::VariableArray: { | ||||||||
4457 | // Losing element qualification here is fine. | ||||||||
4458 | const VariableArrayType *VAT = cast<VariableArrayType>(Ty); | ||||||||
4459 | |||||||||
4460 | // Unknown size indication requires no size computation. | ||||||||
4461 | // Otherwise, evaluate and record it. | ||||||||
4462 | auto Size = VAT->getSizeExpr(); | ||||||||
4463 | if (Size && !CSI->isVLATypeCaptured(VAT) && | ||||||||
4464 | (isa<CapturedRegionScopeInfo>(CSI) || isa<LambdaScopeInfo>(CSI))) | ||||||||
4465 | CSI->addVLATypeCapture(Size->getExprLoc(), VAT, Context.getSizeType()); | ||||||||
4466 | |||||||||
4467 | T = VAT->getElementType(); | ||||||||
4468 | break; | ||||||||
4469 | } | ||||||||
4470 | case Type::FunctionProto: | ||||||||
4471 | case Type::FunctionNoProto: | ||||||||
4472 | T = cast<FunctionType>(Ty)->getReturnType(); | ||||||||
4473 | break; | ||||||||
4474 | case Type::Paren: | ||||||||
4475 | case Type::TypeOf: | ||||||||
4476 | case Type::UnaryTransform: | ||||||||
4477 | case Type::Attributed: | ||||||||
4478 | case Type::SubstTemplateTypeParm: | ||||||||
4479 | case Type::MacroQualified: | ||||||||
4480 | // Keep walking after single level desugaring. | ||||||||
4481 | T = T.getSingleStepDesugaredType(Context); | ||||||||
4482 | break; | ||||||||
4483 | case Type::Typedef: | ||||||||
4484 | T = cast<TypedefType>(Ty)->desugar(); | ||||||||
4485 | break; | ||||||||
4486 | case Type::Decltype: | ||||||||
4487 | T = cast<DecltypeType>(Ty)->desugar(); | ||||||||
4488 | break; | ||||||||
4489 | case Type::Auto: | ||||||||
4490 | case Type::DeducedTemplateSpecialization: | ||||||||
4491 | T = cast<DeducedType>(Ty)->getDeducedType(); | ||||||||
4492 | break; | ||||||||
4493 | case Type::TypeOfExpr: | ||||||||
4494 | T = cast<TypeOfExprType>(Ty)->getUnderlyingExpr()->getType(); | ||||||||
4495 | break; | ||||||||
4496 | case Type::Atomic: | ||||||||
4497 | T = cast<AtomicType>(Ty)->getValueType(); | ||||||||
4498 | break; | ||||||||
4499 | } | ||||||||
4500 | } while (!T.isNull() && T->isVariablyModifiedType()); | ||||||||
4501 | } | ||||||||
4502 | |||||||||
4503 | /// Build a sizeof or alignof expression given a type operand. | ||||||||
4504 | ExprResult | ||||||||
4505 | Sema::CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, | ||||||||
4506 | SourceLocation OpLoc, | ||||||||
4507 | UnaryExprOrTypeTrait ExprKind, | ||||||||
4508 | SourceRange R) { | ||||||||
4509 | if (!TInfo) | ||||||||
4510 | return ExprError(); | ||||||||
4511 | |||||||||
4512 | QualType T = TInfo->getType(); | ||||||||
4513 | |||||||||
4514 | if (!T->isDependentType() && | ||||||||
4515 | CheckUnaryExprOrTypeTraitOperand(T, OpLoc, R, ExprKind)) | ||||||||
4516 | return ExprError(); | ||||||||
4517 | |||||||||
4518 | if (T->isVariablyModifiedType() && FunctionScopes.size() > 1) { | ||||||||
4519 | if (auto *TT = T->getAs<TypedefType>()) { | ||||||||
4520 | for (auto I = FunctionScopes.rbegin(), | ||||||||
4521 | E = std::prev(FunctionScopes.rend()); | ||||||||
4522 | I != E; ++I) { | ||||||||
4523 | auto *CSI = dyn_cast<CapturingScopeInfo>(*I); | ||||||||
4524 | if (CSI == nullptr) | ||||||||
4525 | break; | ||||||||
4526 | DeclContext *DC = nullptr; | ||||||||
4527 | if (auto *LSI = dyn_cast<LambdaScopeInfo>(CSI)) | ||||||||
4528 | DC = LSI->CallOperator; | ||||||||
4529 | else if (auto *CRSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) | ||||||||
4530 | DC = CRSI->TheCapturedDecl; | ||||||||
4531 | else if (auto *BSI = dyn_cast<BlockScopeInfo>(CSI)) | ||||||||
4532 | DC = BSI->TheDecl; | ||||||||
4533 | if (DC) { | ||||||||
4534 | if (DC->containsDecl(TT->getDecl())) | ||||||||
4535 | break; | ||||||||
4536 | captureVariablyModifiedType(Context, T, CSI); | ||||||||
4537 | } | ||||||||
4538 | } | ||||||||
4539 | } | ||||||||
4540 | } | ||||||||
4541 | |||||||||
4542 | // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. | ||||||||
4543 | return new (Context) UnaryExprOrTypeTraitExpr( | ||||||||
4544 | ExprKind, TInfo, Context.getSizeType(), OpLoc, R.getEnd()); | ||||||||
4545 | } | ||||||||
4546 | |||||||||
4547 | /// Build a sizeof or alignof expression given an expression | ||||||||
4548 | /// operand. | ||||||||
4549 | ExprResult | ||||||||
4550 | Sema::CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, | ||||||||
4551 | UnaryExprOrTypeTrait ExprKind) { | ||||||||
4552 | ExprResult PE = CheckPlaceholderExpr(E); | ||||||||
4553 | if (PE.isInvalid()) | ||||||||
4554 | return ExprError(); | ||||||||
4555 | |||||||||
4556 | E = PE.get(); | ||||||||
4557 | |||||||||
4558 | // Verify that the operand is valid. | ||||||||
4559 | bool isInvalid = false; | ||||||||
4560 | if (E->isTypeDependent()) { | ||||||||
4561 | // Delay type-checking for type-dependent expressions. | ||||||||
4562 | } else if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||||||
4563 | isInvalid = CheckAlignOfExpr(*this, E, ExprKind); | ||||||||
4564 | } else if (ExprKind == UETT_VecStep) { | ||||||||
4565 | isInvalid = CheckVecStepExpr(E); | ||||||||
4566 | } else if (ExprKind == UETT_OpenMPRequiredSimdAlign) { | ||||||||
4567 | Diag(E->getExprLoc(), diag::err_openmp_default_simd_align_expr); | ||||||||
4568 | isInvalid = true; | ||||||||
4569 | } else if (E->refersToBitField()) { // C99 6.5.3.4p1. | ||||||||
4570 | Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) << 0; | ||||||||
4571 | isInvalid = true; | ||||||||
4572 | } else { | ||||||||
4573 | isInvalid = CheckUnaryExprOrTypeTraitOperand(E, UETT_SizeOf); | ||||||||
4574 | } | ||||||||
4575 | |||||||||
4576 | if (isInvalid) | ||||||||
4577 | return ExprError(); | ||||||||
4578 | |||||||||
4579 | if (ExprKind == UETT_SizeOf && E->getType()->isVariableArrayType()) { | ||||||||
4580 | PE = TransformToPotentiallyEvaluated(E); | ||||||||
4581 | if (PE.isInvalid()) return ExprError(); | ||||||||
4582 | E = PE.get(); | ||||||||
4583 | } | ||||||||
4584 | |||||||||
4585 | // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. | ||||||||
4586 | return new (Context) UnaryExprOrTypeTraitExpr( | ||||||||
4587 | ExprKind, E, Context.getSizeType(), OpLoc, E->getSourceRange().getEnd()); | ||||||||
4588 | } | ||||||||
4589 | |||||||||
4590 | /// ActOnUnaryExprOrTypeTraitExpr - Handle @c sizeof(type) and @c sizeof @c | ||||||||
4591 | /// expr and the same for @c alignof and @c __alignof | ||||||||
4592 | /// Note that the ArgRange is invalid if isType is false. | ||||||||
4593 | ExprResult | ||||||||
4594 | Sema::ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, | ||||||||
4595 | UnaryExprOrTypeTrait ExprKind, bool IsType, | ||||||||
4596 | void *TyOrEx, SourceRange ArgRange) { | ||||||||
4597 | // If error parsing type, ignore. | ||||||||
4598 | if (!TyOrEx) return ExprError(); | ||||||||
4599 | |||||||||
4600 | if (IsType) { | ||||||||
4601 | TypeSourceInfo *TInfo; | ||||||||
4602 | (void) GetTypeFromParser(ParsedType::getFromOpaquePtr(TyOrEx), &TInfo); | ||||||||
4603 | return CreateUnaryExprOrTypeTraitExpr(TInfo, OpLoc, ExprKind, ArgRange); | ||||||||
4604 | } | ||||||||
4605 | |||||||||
4606 | Expr *ArgEx = (Expr *)TyOrEx; | ||||||||
4607 | ExprResult Result = CreateUnaryExprOrTypeTraitExpr(ArgEx, OpLoc, ExprKind); | ||||||||
4608 | return Result; | ||||||||
4609 | } | ||||||||
4610 | |||||||||
4611 | static QualType CheckRealImagOperand(Sema &S, ExprResult &V, SourceLocation Loc, | ||||||||
4612 | bool IsReal) { | ||||||||
4613 | if (V.get()->isTypeDependent()) | ||||||||
4614 | return S.Context.DependentTy; | ||||||||
4615 | |||||||||
4616 | // _Real and _Imag are only l-values for normal l-values. | ||||||||
4617 | if (V.get()->getObjectKind() != OK_Ordinary) { | ||||||||
4618 | V = S.DefaultLvalueConversion(V.get()); | ||||||||
4619 | if (V.isInvalid()) | ||||||||
4620 | return QualType(); | ||||||||
4621 | } | ||||||||
4622 | |||||||||
4623 | // These operators return the element type of a complex type. | ||||||||
4624 | if (const ComplexType *CT = V.get()->getType()->getAs<ComplexType>()) | ||||||||
4625 | return CT->getElementType(); | ||||||||
4626 | |||||||||
4627 | // Otherwise they pass through real integer and floating point types here. | ||||||||
4628 | if (V.get()->getType()->isArithmeticType()) | ||||||||
4629 | return V.get()->getType(); | ||||||||
4630 | |||||||||
4631 | // Test for placeholders. | ||||||||
4632 | ExprResult PR = S.CheckPlaceholderExpr(V.get()); | ||||||||
4633 | if (PR.isInvalid()) return QualType(); | ||||||||
4634 | if (PR.get() != V.get()) { | ||||||||
4635 | V = PR; | ||||||||
4636 | return CheckRealImagOperand(S, V, Loc, IsReal); | ||||||||
4637 | } | ||||||||
4638 | |||||||||
4639 | // Reject anything else. | ||||||||
4640 | S.Diag(Loc, diag::err_realimag_invalid_type) << V.get()->getType() | ||||||||
4641 | << (IsReal ? "__real" : "__imag"); | ||||||||
4642 | return QualType(); | ||||||||
4643 | } | ||||||||
4644 | |||||||||
4645 | |||||||||
4646 | |||||||||
4647 | ExprResult | ||||||||
4648 | Sema::ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, | ||||||||
4649 | tok::TokenKind Kind, Expr *Input) { | ||||||||
4650 | UnaryOperatorKind Opc; | ||||||||
4651 | switch (Kind) { | ||||||||
4652 | default: llvm_unreachable("Unknown unary op!")::llvm::llvm_unreachable_internal("Unknown unary op!", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4652); | ||||||||
4653 | case tok::plusplus: Opc = UO_PostInc; break; | ||||||||
4654 | case tok::minusminus: Opc = UO_PostDec; break; | ||||||||
4655 | } | ||||||||
4656 | |||||||||
4657 | // Since this might is a postfix expression, get rid of ParenListExprs. | ||||||||
4658 | ExprResult Result = MaybeConvertParenListExprToParenExpr(S, Input); | ||||||||
4659 | if (Result.isInvalid()) return ExprError(); | ||||||||
4660 | Input = Result.get(); | ||||||||
4661 | |||||||||
4662 | return BuildUnaryOp(S, OpLoc, Opc, Input); | ||||||||
4663 | } | ||||||||
4664 | |||||||||
4665 | /// Diagnose if arithmetic on the given ObjC pointer is illegal. | ||||||||
4666 | /// | ||||||||
4667 | /// \return true on error | ||||||||
4668 | static bool checkArithmeticOnObjCPointer(Sema &S, | ||||||||
4669 | SourceLocation opLoc, | ||||||||
4670 | Expr *op) { | ||||||||
4671 | assert(op->getType()->isObjCObjectPointerType())(static_cast <bool> (op->getType()->isObjCObjectPointerType ()) ? void (0) : __assert_fail ("op->getType()->isObjCObjectPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4671, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4672 | if (S.LangOpts.ObjCRuntime.allowsPointerArithmetic() && | ||||||||
4673 | !S.LangOpts.ObjCSubscriptingLegacyRuntime) | ||||||||
4674 | return false; | ||||||||
4675 | |||||||||
4676 | S.Diag(opLoc, diag::err_arithmetic_nonfragile_interface) | ||||||||
4677 | << op->getType()->castAs<ObjCObjectPointerType>()->getPointeeType() | ||||||||
4678 | << op->getSourceRange(); | ||||||||
4679 | return true; | ||||||||
4680 | } | ||||||||
4681 | |||||||||
4682 | static bool isMSPropertySubscriptExpr(Sema &S, Expr *Base) { | ||||||||
4683 | auto *BaseNoParens = Base->IgnoreParens(); | ||||||||
4684 | if (auto *MSProp = dyn_cast<MSPropertyRefExpr>(BaseNoParens)) | ||||||||
4685 | return MSProp->getPropertyDecl()->getType()->isArrayType(); | ||||||||
4686 | return isa<MSPropertySubscriptExpr>(BaseNoParens); | ||||||||
4687 | } | ||||||||
4688 | |||||||||
4689 | ExprResult | ||||||||
4690 | Sema::ActOnArraySubscriptExpr(Scope *S, Expr *base, SourceLocation lbLoc, | ||||||||
4691 | Expr *idx, SourceLocation rbLoc) { | ||||||||
4692 | if (base && !base->getType().isNull() && | ||||||||
4693 | base->getType()->isSpecificPlaceholderType(BuiltinType::OMPArraySection)) | ||||||||
4694 | return ActOnOMPArraySectionExpr(base, lbLoc, idx, SourceLocation(), | ||||||||
4695 | SourceLocation(), /*Length*/ nullptr, | ||||||||
4696 | /*Stride=*/nullptr, rbLoc); | ||||||||
4697 | |||||||||
4698 | // Since this might be a postfix expression, get rid of ParenListExprs. | ||||||||
4699 | if (isa<ParenListExpr>(base)) { | ||||||||
4700 | ExprResult result = MaybeConvertParenListExprToParenExpr(S, base); | ||||||||
4701 | if (result.isInvalid()) return ExprError(); | ||||||||
4702 | base = result.get(); | ||||||||
4703 | } | ||||||||
4704 | |||||||||
4705 | // Check if base and idx form a MatrixSubscriptExpr. | ||||||||
4706 | // | ||||||||
4707 | // Helper to check for comma expressions, which are not allowed as indices for | ||||||||
4708 | // matrix subscript expressions. | ||||||||
4709 | auto CheckAndReportCommaError = [this, base, rbLoc](Expr *E) { | ||||||||
4710 | if (isa<BinaryOperator>(E) && cast<BinaryOperator>(E)->isCommaOp()) { | ||||||||
4711 | Diag(E->getExprLoc(), diag::err_matrix_subscript_comma) | ||||||||
4712 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||||||
4713 | return true; | ||||||||
4714 | } | ||||||||
4715 | return false; | ||||||||
4716 | }; | ||||||||
4717 | // The matrix subscript operator ([][])is considered a single operator. | ||||||||
4718 | // Separating the index expressions by parenthesis is not allowed. | ||||||||
4719 | if (base->getType()->isSpecificPlaceholderType( | ||||||||
4720 | BuiltinType::IncompleteMatrixIdx) && | ||||||||
4721 | !isa<MatrixSubscriptExpr>(base)) { | ||||||||
4722 | Diag(base->getExprLoc(), diag::err_matrix_separate_incomplete_index) | ||||||||
4723 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||||||
4724 | return ExprError(); | ||||||||
4725 | } | ||||||||
4726 | // If the base is a MatrixSubscriptExpr, try to create a new | ||||||||
4727 | // MatrixSubscriptExpr. | ||||||||
4728 | auto *matSubscriptE = dyn_cast<MatrixSubscriptExpr>(base); | ||||||||
4729 | if (matSubscriptE) { | ||||||||
4730 | if (CheckAndReportCommaError(idx)) | ||||||||
4731 | return ExprError(); | ||||||||
4732 | |||||||||
4733 | assert(matSubscriptE->isIncomplete() &&(static_cast <bool> (matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript") ? void (0) : __assert_fail ("matSubscriptE->isIncomplete() && \"base has to be an incomplete matrix subscript\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4734, __extension__ __PRETTY_FUNCTION__)) | ||||||||
4734 | "base has to be an incomplete matrix subscript")(static_cast <bool> (matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript") ? void (0) : __assert_fail ("matSubscriptE->isIncomplete() && \"base has to be an incomplete matrix subscript\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4734, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4735 | return CreateBuiltinMatrixSubscriptExpr( | ||||||||
4736 | matSubscriptE->getBase(), matSubscriptE->getRowIdx(), idx, rbLoc); | ||||||||
4737 | } | ||||||||
4738 | |||||||||
4739 | // Handle any non-overload placeholder types in the base and index | ||||||||
4740 | // expressions. We can't handle overloads here because the other | ||||||||
4741 | // operand might be an overloadable type, in which case the overload | ||||||||
4742 | // resolution for the operator overload should get the first crack | ||||||||
4743 | // at the overload. | ||||||||
4744 | bool IsMSPropertySubscript = false; | ||||||||
4745 | if (base->getType()->isNonOverloadPlaceholderType()) { | ||||||||
4746 | IsMSPropertySubscript = isMSPropertySubscriptExpr(*this, base); | ||||||||
4747 | if (!IsMSPropertySubscript) { | ||||||||
4748 | ExprResult result = CheckPlaceholderExpr(base); | ||||||||
4749 | if (result.isInvalid()) | ||||||||
4750 | return ExprError(); | ||||||||
4751 | base = result.get(); | ||||||||
4752 | } | ||||||||
4753 | } | ||||||||
4754 | |||||||||
4755 | // If the base is a matrix type, try to create a new MatrixSubscriptExpr. | ||||||||
4756 | if (base->getType()->isMatrixType()) { | ||||||||
4757 | if (CheckAndReportCommaError(idx)) | ||||||||
4758 | return ExprError(); | ||||||||
4759 | |||||||||
4760 | return CreateBuiltinMatrixSubscriptExpr(base, idx, nullptr, rbLoc); | ||||||||
4761 | } | ||||||||
4762 | |||||||||
4763 | // A comma-expression as the index is deprecated in C++2a onwards. | ||||||||
4764 | if (getLangOpts().CPlusPlus20 && | ||||||||
4765 | ((isa<BinaryOperator>(idx) && cast<BinaryOperator>(idx)->isCommaOp()) || | ||||||||
4766 | (isa<CXXOperatorCallExpr>(idx) && | ||||||||
4767 | cast<CXXOperatorCallExpr>(idx)->getOperator() == OO_Comma))) { | ||||||||
4768 | Diag(idx->getExprLoc(), diag::warn_deprecated_comma_subscript) | ||||||||
4769 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||||||
4770 | } | ||||||||
4771 | |||||||||
4772 | if (idx->getType()->isNonOverloadPlaceholderType()) { | ||||||||
4773 | ExprResult result = CheckPlaceholderExpr(idx); | ||||||||
4774 | if (result.isInvalid()) return ExprError(); | ||||||||
4775 | idx = result.get(); | ||||||||
4776 | } | ||||||||
4777 | |||||||||
4778 | // Build an unanalyzed expression if either operand is type-dependent. | ||||||||
4779 | if (getLangOpts().CPlusPlus && | ||||||||
4780 | (base->isTypeDependent() || idx->isTypeDependent())) { | ||||||||
4781 | return new (Context) ArraySubscriptExpr(base, idx, Context.DependentTy, | ||||||||
4782 | VK_LValue, OK_Ordinary, rbLoc); | ||||||||
4783 | } | ||||||||
4784 | |||||||||
4785 | // MSDN, property (C++) | ||||||||
4786 | // https://msdn.microsoft.com/en-us/library/yhfk0thd(v=vs.120).aspx | ||||||||
4787 | // This attribute can also be used in the declaration of an empty array in a | ||||||||
4788 | // class or structure definition. For example: | ||||||||
4789 | // __declspec(property(get=GetX, put=PutX)) int x[]; | ||||||||
4790 | // The above statement indicates that x[] can be used with one or more array | ||||||||
4791 | // indices. In this case, i=p->x[a][b] will be turned into i=p->GetX(a, b), | ||||||||
4792 | // and p->x[a][b] = i will be turned into p->PutX(a, b, i); | ||||||||
4793 | if (IsMSPropertySubscript) { | ||||||||
4794 | // Build MS property subscript expression if base is MS property reference | ||||||||
4795 | // or MS property subscript. | ||||||||
4796 | return new (Context) MSPropertySubscriptExpr( | ||||||||
4797 | base, idx, Context.PseudoObjectTy, VK_LValue, OK_Ordinary, rbLoc); | ||||||||
4798 | } | ||||||||
4799 | |||||||||
4800 | // Use C++ overloaded-operator rules if either operand has record | ||||||||
4801 | // type. The spec says to do this if either type is *overloadable*, | ||||||||
4802 | // but enum types can't declare subscript operators or conversion | ||||||||
4803 | // operators, so there's nothing interesting for overload resolution | ||||||||
4804 | // to do if there aren't any record types involved. | ||||||||
4805 | // | ||||||||
4806 | // ObjC pointers have their own subscripting logic that is not tied | ||||||||
4807 | // to overload resolution and so should not take this path. | ||||||||
4808 | if (getLangOpts().CPlusPlus && | ||||||||
4809 | (base->getType()->isRecordType() || | ||||||||
4810 | (!base->getType()->isObjCObjectPointerType() && | ||||||||
4811 | idx->getType()->isRecordType()))) { | ||||||||
4812 | return CreateOverloadedArraySubscriptExpr(lbLoc, rbLoc, base, idx); | ||||||||
4813 | } | ||||||||
4814 | |||||||||
4815 | ExprResult Res = CreateBuiltinArraySubscriptExpr(base, lbLoc, idx, rbLoc); | ||||||||
4816 | |||||||||
4817 | if (!Res.isInvalid() && isa<ArraySubscriptExpr>(Res.get())) | ||||||||
4818 | CheckSubscriptAccessOfNoDeref(cast<ArraySubscriptExpr>(Res.get())); | ||||||||
4819 | |||||||||
4820 | return Res; | ||||||||
4821 | } | ||||||||
4822 | |||||||||
4823 | ExprResult Sema::tryConvertExprToType(Expr *E, QualType Ty) { | ||||||||
4824 | InitializedEntity Entity = InitializedEntity::InitializeTemporary(Ty); | ||||||||
4825 | InitializationKind Kind = | ||||||||
4826 | InitializationKind::CreateCopy(E->getBeginLoc(), SourceLocation()); | ||||||||
4827 | InitializationSequence InitSeq(*this, Entity, Kind, E); | ||||||||
4828 | return InitSeq.Perform(*this, Entity, Kind, E); | ||||||||
4829 | } | ||||||||
4830 | |||||||||
4831 | ExprResult Sema::CreateBuiltinMatrixSubscriptExpr(Expr *Base, Expr *RowIdx, | ||||||||
4832 | Expr *ColumnIdx, | ||||||||
4833 | SourceLocation RBLoc) { | ||||||||
4834 | ExprResult BaseR = CheckPlaceholderExpr(Base); | ||||||||
4835 | if (BaseR.isInvalid()) | ||||||||
4836 | return BaseR; | ||||||||
4837 | Base = BaseR.get(); | ||||||||
4838 | |||||||||
4839 | ExprResult RowR = CheckPlaceholderExpr(RowIdx); | ||||||||
4840 | if (RowR.isInvalid()) | ||||||||
4841 | return RowR; | ||||||||
4842 | RowIdx = RowR.get(); | ||||||||
4843 | |||||||||
4844 | if (!ColumnIdx) | ||||||||
4845 | return new (Context) MatrixSubscriptExpr( | ||||||||
4846 | Base, RowIdx, ColumnIdx, Context.IncompleteMatrixIdxTy, RBLoc); | ||||||||
4847 | |||||||||
4848 | // Build an unanalyzed expression if any of the operands is type-dependent. | ||||||||
4849 | if (Base->isTypeDependent() || RowIdx->isTypeDependent() || | ||||||||
4850 | ColumnIdx->isTypeDependent()) | ||||||||
4851 | return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, | ||||||||
4852 | Context.DependentTy, RBLoc); | ||||||||
4853 | |||||||||
4854 | ExprResult ColumnR = CheckPlaceholderExpr(ColumnIdx); | ||||||||
4855 | if (ColumnR.isInvalid()) | ||||||||
4856 | return ColumnR; | ||||||||
4857 | ColumnIdx = ColumnR.get(); | ||||||||
4858 | |||||||||
4859 | // Check that IndexExpr is an integer expression. If it is a constant | ||||||||
4860 | // expression, check that it is less than Dim (= the number of elements in the | ||||||||
4861 | // corresponding dimension). | ||||||||
4862 | auto IsIndexValid = [&](Expr *IndexExpr, unsigned Dim, | ||||||||
4863 | bool IsColumnIdx) -> Expr * { | ||||||||
4864 | if (!IndexExpr->getType()->isIntegerType() && | ||||||||
4865 | !IndexExpr->isTypeDependent()) { | ||||||||
4866 | Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_not_integer) | ||||||||
4867 | << IsColumnIdx; | ||||||||
4868 | return nullptr; | ||||||||
4869 | } | ||||||||
4870 | |||||||||
4871 | if (Optional<llvm::APSInt> Idx = | ||||||||
4872 | IndexExpr->getIntegerConstantExpr(Context)) { | ||||||||
4873 | if ((*Idx < 0 || *Idx >= Dim)) { | ||||||||
4874 | Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_outside_range) | ||||||||
4875 | << IsColumnIdx << Dim; | ||||||||
4876 | return nullptr; | ||||||||
4877 | } | ||||||||
4878 | } | ||||||||
4879 | |||||||||
4880 | ExprResult ConvExpr = | ||||||||
4881 | tryConvertExprToType(IndexExpr, Context.getSizeType()); | ||||||||
4882 | assert(!ConvExpr.isInvalid() &&(static_cast <bool> (!ConvExpr.isInvalid() && "should be able to convert any integer type to size type" ) ? void (0) : __assert_fail ("!ConvExpr.isInvalid() && \"should be able to convert any integer type to size type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4883, __extension__ __PRETTY_FUNCTION__)) | ||||||||
4883 | "should be able to convert any integer type to size type")(static_cast <bool> (!ConvExpr.isInvalid() && "should be able to convert any integer type to size type" ) ? void (0) : __assert_fail ("!ConvExpr.isInvalid() && \"should be able to convert any integer type to size type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 4883, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4884 | return ConvExpr.get(); | ||||||||
4885 | }; | ||||||||
4886 | |||||||||
4887 | auto *MTy = Base->getType()->getAs<ConstantMatrixType>(); | ||||||||
4888 | RowIdx = IsIndexValid(RowIdx, MTy->getNumRows(), false); | ||||||||
4889 | ColumnIdx = IsIndexValid(ColumnIdx, MTy->getNumColumns(), true); | ||||||||
4890 | if (!RowIdx || !ColumnIdx) | ||||||||
4891 | return ExprError(); | ||||||||
4892 | |||||||||
4893 | return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, | ||||||||
4894 | MTy->getElementType(), RBLoc); | ||||||||
4895 | } | ||||||||
4896 | |||||||||
4897 | void Sema::CheckAddressOfNoDeref(const Expr *E) { | ||||||||
4898 | ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); | ||||||||
4899 | const Expr *StrippedExpr = E->IgnoreParenImpCasts(); | ||||||||
4900 | |||||||||
4901 | // For expressions like `&(*s).b`, the base is recorded and what should be | ||||||||
4902 | // checked. | ||||||||
4903 | const MemberExpr *Member = nullptr; | ||||||||
4904 | while ((Member = dyn_cast<MemberExpr>(StrippedExpr)) && !Member->isArrow()) | ||||||||
4905 | StrippedExpr = Member->getBase()->IgnoreParenImpCasts(); | ||||||||
4906 | |||||||||
4907 | LastRecord.PossibleDerefs.erase(StrippedExpr); | ||||||||
4908 | } | ||||||||
4909 | |||||||||
4910 | void Sema::CheckSubscriptAccessOfNoDeref(const ArraySubscriptExpr *E) { | ||||||||
4911 | if (isUnevaluatedContext()) | ||||||||
4912 | return; | ||||||||
4913 | |||||||||
4914 | QualType ResultTy = E->getType(); | ||||||||
4915 | ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); | ||||||||
4916 | |||||||||
4917 | // Bail if the element is an array since it is not memory access. | ||||||||
4918 | if (isa<ArrayType>(ResultTy)) | ||||||||
4919 | return; | ||||||||
4920 | |||||||||
4921 | if (ResultTy->hasAttr(attr::NoDeref)) { | ||||||||
4922 | LastRecord.PossibleDerefs.insert(E); | ||||||||
4923 | return; | ||||||||
4924 | } | ||||||||
4925 | |||||||||
4926 | // Check if the base type is a pointer to a member access of a struct | ||||||||
4927 | // marked with noderef. | ||||||||
4928 | const Expr *Base = E->getBase(); | ||||||||
4929 | QualType BaseTy = Base->getType(); | ||||||||
4930 | if (!(isa<ArrayType>(BaseTy) || isa<PointerType>(BaseTy))) | ||||||||
4931 | // Not a pointer access | ||||||||
4932 | return; | ||||||||
4933 | |||||||||
4934 | const MemberExpr *Member = nullptr; | ||||||||
4935 | while ((Member = dyn_cast<MemberExpr>(Base->IgnoreParenCasts())) && | ||||||||
4936 | Member->isArrow()) | ||||||||
4937 | Base = Member->getBase(); | ||||||||
4938 | |||||||||
4939 | if (const auto *Ptr = dyn_cast<PointerType>(Base->getType())) { | ||||||||
4940 | if (Ptr->getPointeeType()->hasAttr(attr::NoDeref)) | ||||||||
4941 | LastRecord.PossibleDerefs.insert(E); | ||||||||
4942 | } | ||||||||
4943 | } | ||||||||
4944 | |||||||||
4945 | ExprResult Sema::ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, | ||||||||
4946 | Expr *LowerBound, | ||||||||
4947 | SourceLocation ColonLocFirst, | ||||||||
4948 | SourceLocation ColonLocSecond, | ||||||||
4949 | Expr *Length, Expr *Stride, | ||||||||
4950 | SourceLocation RBLoc) { | ||||||||
4951 | if (Base->getType()->isPlaceholderType() && | ||||||||
4952 | !Base->getType()->isSpecificPlaceholderType( | ||||||||
4953 | BuiltinType::OMPArraySection)) { | ||||||||
4954 | ExprResult Result = CheckPlaceholderExpr(Base); | ||||||||
4955 | if (Result.isInvalid()) | ||||||||
4956 | return ExprError(); | ||||||||
4957 | Base = Result.get(); | ||||||||
4958 | } | ||||||||
4959 | if (LowerBound && LowerBound->getType()->isNonOverloadPlaceholderType()) { | ||||||||
4960 | ExprResult Result = CheckPlaceholderExpr(LowerBound); | ||||||||
4961 | if (Result.isInvalid()) | ||||||||
4962 | return ExprError(); | ||||||||
4963 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
4964 | if (Result.isInvalid()) | ||||||||
4965 | return ExprError(); | ||||||||
4966 | LowerBound = Result.get(); | ||||||||
4967 | } | ||||||||
4968 | if (Length && Length->getType()->isNonOverloadPlaceholderType()) { | ||||||||
4969 | ExprResult Result = CheckPlaceholderExpr(Length); | ||||||||
4970 | if (Result.isInvalid()) | ||||||||
4971 | return ExprError(); | ||||||||
4972 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
4973 | if (Result.isInvalid()) | ||||||||
4974 | return ExprError(); | ||||||||
4975 | Length = Result.get(); | ||||||||
4976 | } | ||||||||
4977 | if (Stride && Stride->getType()->isNonOverloadPlaceholderType()) { | ||||||||
4978 | ExprResult Result = CheckPlaceholderExpr(Stride); | ||||||||
4979 | if (Result.isInvalid()) | ||||||||
4980 | return ExprError(); | ||||||||
4981 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
4982 | if (Result.isInvalid()) | ||||||||
4983 | return ExprError(); | ||||||||
4984 | Stride = Result.get(); | ||||||||
4985 | } | ||||||||
4986 | |||||||||
4987 | // Build an unanalyzed expression if either operand is type-dependent. | ||||||||
4988 | if (Base->isTypeDependent() || | ||||||||
4989 | (LowerBound && | ||||||||
4990 | (LowerBound->isTypeDependent() || LowerBound->isValueDependent())) || | ||||||||
4991 | (Length && (Length->isTypeDependent() || Length->isValueDependent())) || | ||||||||
4992 | (Stride && (Stride->isTypeDependent() || Stride->isValueDependent()))) { | ||||||||
4993 | return new (Context) OMPArraySectionExpr( | ||||||||
4994 | Base, LowerBound, Length, Stride, Context.DependentTy, VK_LValue, | ||||||||
4995 | OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); | ||||||||
4996 | } | ||||||||
4997 | |||||||||
4998 | // Perform default conversions. | ||||||||
4999 | QualType OriginalTy = OMPArraySectionExpr::getBaseOriginalType(Base); | ||||||||
5000 | QualType ResultTy; | ||||||||
5001 | if (OriginalTy->isAnyPointerType()) { | ||||||||
5002 | ResultTy = OriginalTy->getPointeeType(); | ||||||||
5003 | } else if (OriginalTy->isArrayType()) { | ||||||||
5004 | ResultTy = OriginalTy->getAsArrayTypeUnsafe()->getElementType(); | ||||||||
5005 | } else { | ||||||||
5006 | return ExprError( | ||||||||
5007 | Diag(Base->getExprLoc(), diag::err_omp_typecheck_section_value) | ||||||||
5008 | << Base->getSourceRange()); | ||||||||
5009 | } | ||||||||
5010 | // C99 6.5.2.1p1 | ||||||||
5011 | if (LowerBound) { | ||||||||
5012 | auto Res = PerformOpenMPImplicitIntegerConversion(LowerBound->getExprLoc(), | ||||||||
5013 | LowerBound); | ||||||||
5014 | if (Res.isInvalid()) | ||||||||
5015 | return ExprError(Diag(LowerBound->getExprLoc(), | ||||||||
5016 | diag::err_omp_typecheck_section_not_integer) | ||||||||
5017 | << 0 << LowerBound->getSourceRange()); | ||||||||
5018 | LowerBound = Res.get(); | ||||||||
5019 | |||||||||
5020 | if (LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
5021 | LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
5022 | Diag(LowerBound->getExprLoc(), diag::warn_omp_section_is_char) | ||||||||
5023 | << 0 << LowerBound->getSourceRange(); | ||||||||
5024 | } | ||||||||
5025 | if (Length) { | ||||||||
5026 | auto Res = | ||||||||
5027 | PerformOpenMPImplicitIntegerConversion(Length->getExprLoc(), Length); | ||||||||
5028 | if (Res.isInvalid()) | ||||||||
5029 | return ExprError(Diag(Length->getExprLoc(), | ||||||||
5030 | diag::err_omp_typecheck_section_not_integer) | ||||||||
5031 | << 1 << Length->getSourceRange()); | ||||||||
5032 | Length = Res.get(); | ||||||||
5033 | |||||||||
5034 | if (Length->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
5035 | Length->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
5036 | Diag(Length->getExprLoc(), diag::warn_omp_section_is_char) | ||||||||
5037 | << 1 << Length->getSourceRange(); | ||||||||
5038 | } | ||||||||
5039 | if (Stride) { | ||||||||
5040 | ExprResult Res = | ||||||||
5041 | PerformOpenMPImplicitIntegerConversion(Stride->getExprLoc(), Stride); | ||||||||
5042 | if (Res.isInvalid()) | ||||||||
5043 | return ExprError(Diag(Stride->getExprLoc(), | ||||||||
5044 | diag::err_omp_typecheck_section_not_integer) | ||||||||
5045 | << 1 << Stride->getSourceRange()); | ||||||||
5046 | Stride = Res.get(); | ||||||||
5047 | |||||||||
5048 | if (Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
5049 | Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
5050 | Diag(Stride->getExprLoc(), diag::warn_omp_section_is_char) | ||||||||
5051 | << 1 << Stride->getSourceRange(); | ||||||||
5052 | } | ||||||||
5053 | |||||||||
5054 | // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, | ||||||||
5055 | // C++ [expr.sub]p1: The type "T" shall be a completely-defined object | ||||||||
5056 | // type. Note that functions are not objects, and that (in C99 parlance) | ||||||||
5057 | // incomplete types are not object types. | ||||||||
5058 | if (ResultTy->isFunctionType()) { | ||||||||
5059 | Diag(Base->getExprLoc(), diag::err_omp_section_function_type) | ||||||||
5060 | << ResultTy << Base->getSourceRange(); | ||||||||
5061 | return ExprError(); | ||||||||
5062 | } | ||||||||
5063 | |||||||||
5064 | if (RequireCompleteType(Base->getExprLoc(), ResultTy, | ||||||||
5065 | diag::err_omp_section_incomplete_type, Base)) | ||||||||
5066 | return ExprError(); | ||||||||
5067 | |||||||||
5068 | if (LowerBound && !OriginalTy->isAnyPointerType()) { | ||||||||
5069 | Expr::EvalResult Result; | ||||||||
5070 | if (LowerBound->EvaluateAsInt(Result, Context)) { | ||||||||
5071 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
5072 | // The array section must be a subset of the original array. | ||||||||
5073 | llvm::APSInt LowerBoundValue = Result.Val.getInt(); | ||||||||
5074 | if (LowerBoundValue.isNegative()) { | ||||||||
5075 | Diag(LowerBound->getExprLoc(), diag::err_omp_section_not_subset_of_array) | ||||||||
5076 | << LowerBound->getSourceRange(); | ||||||||
5077 | return ExprError(); | ||||||||
5078 | } | ||||||||
5079 | } | ||||||||
5080 | } | ||||||||
5081 | |||||||||
5082 | if (Length) { | ||||||||
5083 | Expr::EvalResult Result; | ||||||||
5084 | if (Length->EvaluateAsInt(Result, Context)) { | ||||||||
5085 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
5086 | // The length must evaluate to non-negative integers. | ||||||||
5087 | llvm::APSInt LengthValue = Result.Val.getInt(); | ||||||||
5088 | if (LengthValue.isNegative()) { | ||||||||
5089 | Diag(Length->getExprLoc(), diag::err_omp_section_length_negative) | ||||||||
5090 | << toString(LengthValue, /*Radix=*/10, /*Signed=*/true) | ||||||||
5091 | << Length->getSourceRange(); | ||||||||
5092 | return ExprError(); | ||||||||
5093 | } | ||||||||
5094 | } | ||||||||
5095 | } else if (ColonLocFirst.isValid() && | ||||||||
5096 | (OriginalTy.isNull() || (!OriginalTy->isConstantArrayType() && | ||||||||
5097 | !OriginalTy->isVariableArrayType()))) { | ||||||||
5098 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
5099 | // When the size of the array dimension is not known, the length must be | ||||||||
5100 | // specified explicitly. | ||||||||
5101 | Diag(ColonLocFirst, diag::err_omp_section_length_undefined) | ||||||||
5102 | << (!OriginalTy.isNull() && OriginalTy->isArrayType()); | ||||||||
5103 | return ExprError(); | ||||||||
5104 | } | ||||||||
5105 | |||||||||
5106 | if (Stride) { | ||||||||
5107 | Expr::EvalResult Result; | ||||||||
5108 | if (Stride->EvaluateAsInt(Result, Context)) { | ||||||||
5109 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
5110 | // The stride must evaluate to a positive integer. | ||||||||
5111 | llvm::APSInt StrideValue = Result.Val.getInt(); | ||||||||
5112 | if (!StrideValue.isStrictlyPositive()) { | ||||||||
5113 | Diag(Stride->getExprLoc(), diag::err_omp_section_stride_non_positive) | ||||||||
5114 | << toString(StrideValue, /*Radix=*/10, /*Signed=*/true) | ||||||||
5115 | << Stride->getSourceRange(); | ||||||||
5116 | return ExprError(); | ||||||||
5117 | } | ||||||||
5118 | } | ||||||||
5119 | } | ||||||||
5120 | |||||||||
5121 | if (!Base->getType()->isSpecificPlaceholderType( | ||||||||
5122 | BuiltinType::OMPArraySection)) { | ||||||||
5123 | ExprResult Result = DefaultFunctionArrayLvalueConversion(Base); | ||||||||
5124 | if (Result.isInvalid()) | ||||||||
5125 | return ExprError(); | ||||||||
5126 | Base = Result.get(); | ||||||||
5127 | } | ||||||||
5128 | return new (Context) OMPArraySectionExpr( | ||||||||
5129 | Base, LowerBound, Length, Stride, Context.OMPArraySectionTy, VK_LValue, | ||||||||
5130 | OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); | ||||||||
5131 | } | ||||||||
5132 | |||||||||
5133 | ExprResult Sema::ActOnOMPArrayShapingExpr(Expr *Base, SourceLocation LParenLoc, | ||||||||
5134 | SourceLocation RParenLoc, | ||||||||
5135 | ArrayRef<Expr *> Dims, | ||||||||
5136 | ArrayRef<SourceRange> Brackets) { | ||||||||
5137 | if (Base->getType()->isPlaceholderType()) { | ||||||||
5138 | ExprResult Result = CheckPlaceholderExpr(Base); | ||||||||
5139 | if (Result.isInvalid()) | ||||||||
5140 | return ExprError(); | ||||||||
5141 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
5142 | if (Result.isInvalid()) | ||||||||
5143 | return ExprError(); | ||||||||
5144 | Base = Result.get(); | ||||||||
5145 | } | ||||||||
5146 | QualType BaseTy = Base->getType(); | ||||||||
5147 | // Delay analysis of the types/expressions if instantiation/specialization is | ||||||||
5148 | // required. | ||||||||
5149 | if (!BaseTy->isPointerType() && Base->isTypeDependent()) | ||||||||
5150 | return OMPArrayShapingExpr::Create(Context, Context.DependentTy, Base, | ||||||||
5151 | LParenLoc, RParenLoc, Dims, Brackets); | ||||||||
5152 | if (!BaseTy->isPointerType() || | ||||||||
5153 | (!Base->isTypeDependent() && | ||||||||
5154 | BaseTy->getPointeeType()->isIncompleteType())) | ||||||||
5155 | return ExprError(Diag(Base->getExprLoc(), | ||||||||
5156 | diag::err_omp_non_pointer_type_array_shaping_base) | ||||||||
5157 | << Base->getSourceRange()); | ||||||||
5158 | |||||||||
5159 | SmallVector<Expr *, 4> NewDims; | ||||||||
5160 | bool ErrorFound = false; | ||||||||
5161 | for (Expr *Dim : Dims) { | ||||||||
5162 | if (Dim->getType()->isPlaceholderType()) { | ||||||||
5163 | ExprResult Result = CheckPlaceholderExpr(Dim); | ||||||||
5164 | if (Result.isInvalid()) { | ||||||||
5165 | ErrorFound = true; | ||||||||
5166 | continue; | ||||||||
5167 | } | ||||||||
5168 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
5169 | if (Result.isInvalid()) { | ||||||||
5170 | ErrorFound = true; | ||||||||
5171 | continue; | ||||||||
5172 | } | ||||||||
5173 | Dim = Result.get(); | ||||||||
5174 | } | ||||||||
5175 | if (!Dim->isTypeDependent()) { | ||||||||
5176 | ExprResult Result = | ||||||||
5177 | PerformOpenMPImplicitIntegerConversion(Dim->getExprLoc(), Dim); | ||||||||
5178 | if (Result.isInvalid()) { | ||||||||
5179 | ErrorFound = true; | ||||||||
5180 | Diag(Dim->getExprLoc(), diag::err_omp_typecheck_shaping_not_integer) | ||||||||
5181 | << Dim->getSourceRange(); | ||||||||
5182 | continue; | ||||||||
5183 | } | ||||||||
5184 | Dim = Result.get(); | ||||||||
5185 | Expr::EvalResult EvResult; | ||||||||
5186 | if (!Dim->isValueDependent() && Dim->EvaluateAsInt(EvResult, Context)) { | ||||||||
5187 | // OpenMP 5.0, [2.1.4 Array Shaping] | ||||||||
5188 | // Each si is an integral type expression that must evaluate to a | ||||||||
5189 | // positive integer. | ||||||||
5190 | llvm::APSInt Value = EvResult.Val.getInt(); | ||||||||
5191 | if (!Value.isStrictlyPositive()) { | ||||||||
5192 | Diag(Dim->getExprLoc(), diag::err_omp_shaping_dimension_not_positive) | ||||||||
5193 | << toString(Value, /*Radix=*/10, /*Signed=*/true) | ||||||||
5194 | << Dim->getSourceRange(); | ||||||||
5195 | ErrorFound = true; | ||||||||
5196 | continue; | ||||||||
5197 | } | ||||||||
5198 | } | ||||||||
5199 | } | ||||||||
5200 | NewDims.push_back(Dim); | ||||||||
5201 | } | ||||||||
5202 | if (ErrorFound) | ||||||||
5203 | return ExprError(); | ||||||||
5204 | return OMPArrayShapingExpr::Create(Context, Context.OMPArrayShapingTy, Base, | ||||||||
5205 | LParenLoc, RParenLoc, NewDims, Brackets); | ||||||||
5206 | } | ||||||||
5207 | |||||||||
5208 | ExprResult Sema::ActOnOMPIteratorExpr(Scope *S, SourceLocation IteratorKwLoc, | ||||||||
5209 | SourceLocation LLoc, SourceLocation RLoc, | ||||||||
5210 | ArrayRef<OMPIteratorData> Data) { | ||||||||
5211 | SmallVector<OMPIteratorExpr::IteratorDefinition, 4> ID; | ||||||||
5212 | bool IsCorrect = true; | ||||||||
5213 | for (const OMPIteratorData &D : Data) { | ||||||||
5214 | TypeSourceInfo *TInfo = nullptr; | ||||||||
5215 | SourceLocation StartLoc; | ||||||||
5216 | QualType DeclTy; | ||||||||
5217 | if (!D.Type.getAsOpaquePtr()) { | ||||||||
5218 | // OpenMP 5.0, 2.1.6 Iterators | ||||||||
5219 | // In an iterator-specifier, if the iterator-type is not specified then | ||||||||
5220 | // the type of that iterator is of int type. | ||||||||
5221 | DeclTy = Context.IntTy; | ||||||||
5222 | StartLoc = D.DeclIdentLoc; | ||||||||
5223 | } else { | ||||||||
5224 | DeclTy = GetTypeFromParser(D.Type, &TInfo); | ||||||||
5225 | StartLoc = TInfo->getTypeLoc().getBeginLoc(); | ||||||||
5226 | } | ||||||||
5227 | |||||||||
5228 | bool IsDeclTyDependent = DeclTy->isDependentType() || | ||||||||
5229 | DeclTy->containsUnexpandedParameterPack() || | ||||||||
5230 | DeclTy->isInstantiationDependentType(); | ||||||||
5231 | if (!IsDeclTyDependent) { | ||||||||
5232 | if (!DeclTy->isIntegralType(Context) && !DeclTy->isAnyPointerType()) { | ||||||||
5233 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ | ||||||||
5234 | // The iterator-type must be an integral or pointer type. | ||||||||
5235 | Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) | ||||||||
5236 | << DeclTy; | ||||||||
5237 | IsCorrect = false; | ||||||||
5238 | continue; | ||||||||
5239 | } | ||||||||
5240 | if (DeclTy.isConstant(Context)) { | ||||||||
5241 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ | ||||||||
5242 | // The iterator-type must not be const qualified. | ||||||||
5243 | Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) | ||||||||
5244 | << DeclTy; | ||||||||
5245 | IsCorrect = false; | ||||||||
5246 | continue; | ||||||||
5247 | } | ||||||||
5248 | } | ||||||||
5249 | |||||||||
5250 | // Iterator declaration. | ||||||||
5251 | assert(D.DeclIdent && "Identifier expected.")(static_cast <bool> (D.DeclIdent && "Identifier expected." ) ? void (0) : __assert_fail ("D.DeclIdent && \"Identifier expected.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5251, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5252 | // Always try to create iterator declarator to avoid extra error messages | ||||||||
5253 | // about unknown declarations use. | ||||||||
5254 | auto *VD = VarDecl::Create(Context, CurContext, StartLoc, D.DeclIdentLoc, | ||||||||
5255 | D.DeclIdent, DeclTy, TInfo, SC_None); | ||||||||
5256 | VD->setImplicit(); | ||||||||
5257 | if (S) { | ||||||||
5258 | // Check for conflicting previous declaration. | ||||||||
5259 | DeclarationNameInfo NameInfo(VD->getDeclName(), D.DeclIdentLoc); | ||||||||
5260 | LookupResult Previous(*this, NameInfo, LookupOrdinaryName, | ||||||||
5261 | ForVisibleRedeclaration); | ||||||||
5262 | Previous.suppressDiagnostics(); | ||||||||
5263 | LookupName(Previous, S); | ||||||||
5264 | |||||||||
5265 | FilterLookupForScope(Previous, CurContext, S, /*ConsiderLinkage=*/false, | ||||||||
5266 | /*AllowInlineNamespace=*/false); | ||||||||
5267 | if (!Previous.empty()) { | ||||||||
5268 | NamedDecl *Old = Previous.getRepresentativeDecl(); | ||||||||
5269 | Diag(D.DeclIdentLoc, diag::err_redefinition) << VD->getDeclName(); | ||||||||
5270 | Diag(Old->getLocation(), diag::note_previous_definition); | ||||||||
5271 | } else { | ||||||||
5272 | PushOnScopeChains(VD, S); | ||||||||
5273 | } | ||||||||
5274 | } else { | ||||||||
5275 | CurContext->addDecl(VD); | ||||||||
5276 | } | ||||||||
5277 | Expr *Begin = D.Range.Begin; | ||||||||
5278 | if (!IsDeclTyDependent && Begin && !Begin->isTypeDependent()) { | ||||||||
5279 | ExprResult BeginRes = | ||||||||
5280 | PerformImplicitConversion(Begin, DeclTy, AA_Converting); | ||||||||
5281 | Begin = BeginRes.get(); | ||||||||
5282 | } | ||||||||
5283 | Expr *End = D.Range.End; | ||||||||
5284 | if (!IsDeclTyDependent && End && !End->isTypeDependent()) { | ||||||||
5285 | ExprResult EndRes = PerformImplicitConversion(End, DeclTy, AA_Converting); | ||||||||
5286 | End = EndRes.get(); | ||||||||
5287 | } | ||||||||
5288 | Expr *Step = D.Range.Step; | ||||||||
5289 | if (!IsDeclTyDependent && Step && !Step->isTypeDependent()) { | ||||||||
5290 | if (!Step->getType()->isIntegralType(Context)) { | ||||||||
5291 | Diag(Step->getExprLoc(), diag::err_omp_iterator_step_not_integral) | ||||||||
5292 | << Step << Step->getSourceRange(); | ||||||||
5293 | IsCorrect = false; | ||||||||
5294 | continue; | ||||||||
5295 | } | ||||||||
5296 | Optional<llvm::APSInt> Result = Step->getIntegerConstantExpr(Context); | ||||||||
5297 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions | ||||||||
5298 | // If the step expression of a range-specification equals zero, the | ||||||||
5299 | // behavior is unspecified. | ||||||||
5300 | if (Result && Result->isNullValue()) { | ||||||||
5301 | Diag(Step->getExprLoc(), diag::err_omp_iterator_step_constant_zero) | ||||||||
5302 | << Step << Step->getSourceRange(); | ||||||||
5303 | IsCorrect = false; | ||||||||
5304 | continue; | ||||||||
5305 | } | ||||||||
5306 | } | ||||||||
5307 | if (!Begin || !End || !IsCorrect) { | ||||||||
5308 | IsCorrect = false; | ||||||||
5309 | continue; | ||||||||
5310 | } | ||||||||
5311 | OMPIteratorExpr::IteratorDefinition &IDElem = ID.emplace_back(); | ||||||||
5312 | IDElem.IteratorDecl = VD; | ||||||||
5313 | IDElem.AssignmentLoc = D.AssignLoc; | ||||||||
5314 | IDElem.Range.Begin = Begin; | ||||||||
5315 | IDElem.Range.End = End; | ||||||||
5316 | IDElem.Range.Step = Step; | ||||||||
5317 | IDElem.ColonLoc = D.ColonLoc; | ||||||||
5318 | IDElem.SecondColonLoc = D.SecColonLoc; | ||||||||
5319 | } | ||||||||
5320 | if (!IsCorrect) { | ||||||||
5321 | // Invalidate all created iterator declarations if error is found. | ||||||||
5322 | for (const OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||||||
5323 | if (Decl *ID = D.IteratorDecl) | ||||||||
5324 | ID->setInvalidDecl(); | ||||||||
5325 | } | ||||||||
5326 | return ExprError(); | ||||||||
5327 | } | ||||||||
5328 | SmallVector<OMPIteratorHelperData, 4> Helpers; | ||||||||
5329 | if (!CurContext->isDependentContext()) { | ||||||||
5330 | // Build number of ityeration for each iteration range. | ||||||||
5331 | // Ni = ((Stepi > 0) ? ((Endi + Stepi -1 - Begini)/Stepi) : | ||||||||
5332 | // ((Begini-Stepi-1-Endi) / -Stepi); | ||||||||
5333 | for (OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||||||
5334 | // (Endi - Begini) | ||||||||
5335 | ExprResult Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, D.Range.End, | ||||||||
5336 | D.Range.Begin); | ||||||||
5337 | if(!Res.isUsable()) { | ||||||||
5338 | IsCorrect = false; | ||||||||
5339 | continue; | ||||||||
5340 | } | ||||||||
5341 | ExprResult St, St1; | ||||||||
5342 | if (D.Range.Step) { | ||||||||
5343 | St = D.Range.Step; | ||||||||
5344 | // (Endi - Begini) + Stepi | ||||||||
5345 | Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res.get(), St.get()); | ||||||||
5346 | if (!Res.isUsable()) { | ||||||||
5347 | IsCorrect = false; | ||||||||
5348 | continue; | ||||||||
5349 | } | ||||||||
5350 | // (Endi - Begini) + Stepi - 1 | ||||||||
5351 | Res = | ||||||||
5352 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res.get(), | ||||||||
5353 | ActOnIntegerConstant(D.AssignmentLoc, 1).get()); | ||||||||
5354 | if (!Res.isUsable()) { | ||||||||
5355 | IsCorrect = false; | ||||||||
5356 | continue; | ||||||||
5357 | } | ||||||||
5358 | // ((Endi - Begini) + Stepi - 1) / Stepi | ||||||||
5359 | Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res.get(), St.get()); | ||||||||
5360 | if (!Res.isUsable()) { | ||||||||
5361 | IsCorrect = false; | ||||||||
5362 | continue; | ||||||||
5363 | } | ||||||||
5364 | St1 = CreateBuiltinUnaryOp(D.AssignmentLoc, UO_Minus, D.Range.Step); | ||||||||
5365 | // (Begini - Endi) | ||||||||
5366 | ExprResult Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, | ||||||||
5367 | D.Range.Begin, D.Range.End); | ||||||||
5368 | if (!Res1.isUsable()) { | ||||||||
5369 | IsCorrect = false; | ||||||||
5370 | continue; | ||||||||
5371 | } | ||||||||
5372 | // (Begini - Endi) - Stepi | ||||||||
5373 | Res1 = | ||||||||
5374 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res1.get(), St1.get()); | ||||||||
5375 | if (!Res1.isUsable()) { | ||||||||
5376 | IsCorrect = false; | ||||||||
5377 | continue; | ||||||||
5378 | } | ||||||||
5379 | // (Begini - Endi) - Stepi - 1 | ||||||||
5380 | Res1 = | ||||||||
5381 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res1.get(), | ||||||||
5382 | ActOnIntegerConstant(D.AssignmentLoc, 1).get()); | ||||||||
5383 | if (!Res1.isUsable()) { | ||||||||
5384 | IsCorrect = false; | ||||||||
5385 | continue; | ||||||||
5386 | } | ||||||||
5387 | // ((Begini - Endi) - Stepi - 1) / (-Stepi) | ||||||||
5388 | Res1 = | ||||||||
5389 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res1.get(), St1.get()); | ||||||||
5390 | if (!Res1.isUsable()) { | ||||||||
5391 | IsCorrect = false; | ||||||||
5392 | continue; | ||||||||
5393 | } | ||||||||
5394 | // Stepi > 0. | ||||||||
5395 | ExprResult CmpRes = | ||||||||
5396 | CreateBuiltinBinOp(D.AssignmentLoc, BO_GT, D.Range.Step, | ||||||||
5397 | ActOnIntegerConstant(D.AssignmentLoc, 0).get()); | ||||||||
5398 | if (!CmpRes.isUsable()) { | ||||||||
5399 | IsCorrect = false; | ||||||||
5400 | continue; | ||||||||
5401 | } | ||||||||
5402 | Res = ActOnConditionalOp(D.AssignmentLoc, D.AssignmentLoc, CmpRes.get(), | ||||||||
5403 | Res.get(), Res1.get()); | ||||||||
5404 | if (!Res.isUsable()) { | ||||||||
5405 | IsCorrect = false; | ||||||||
5406 | continue; | ||||||||
5407 | } | ||||||||
5408 | } | ||||||||
5409 | Res = ActOnFinishFullExpr(Res.get(), /*DiscardedValue=*/false); | ||||||||
5410 | if (!Res.isUsable()) { | ||||||||
5411 | IsCorrect = false; | ||||||||
5412 | continue; | ||||||||
5413 | } | ||||||||
5414 | |||||||||
5415 | // Build counter update. | ||||||||
5416 | // Build counter. | ||||||||
5417 | auto *CounterVD = | ||||||||
5418 | VarDecl::Create(Context, CurContext, D.IteratorDecl->getBeginLoc(), | ||||||||
5419 | D.IteratorDecl->getBeginLoc(), nullptr, | ||||||||
5420 | Res.get()->getType(), nullptr, SC_None); | ||||||||
5421 | CounterVD->setImplicit(); | ||||||||
5422 | ExprResult RefRes = | ||||||||
5423 | BuildDeclRefExpr(CounterVD, CounterVD->getType(), VK_LValue, | ||||||||
5424 | D.IteratorDecl->getBeginLoc()); | ||||||||
5425 | // Build counter update. | ||||||||
5426 | // I = Begini + counter * Stepi; | ||||||||
5427 | ExprResult UpdateRes; | ||||||||
5428 | if (D.Range.Step) { | ||||||||
5429 | UpdateRes = CreateBuiltinBinOp( | ||||||||
5430 | D.AssignmentLoc, BO_Mul, | ||||||||
5431 | DefaultLvalueConversion(RefRes.get()).get(), St.get()); | ||||||||
5432 | } else { | ||||||||
5433 | UpdateRes = DefaultLvalueConversion(RefRes.get()); | ||||||||
5434 | } | ||||||||
5435 | if (!UpdateRes.isUsable()) { | ||||||||
5436 | IsCorrect = false; | ||||||||
5437 | continue; | ||||||||
5438 | } | ||||||||
5439 | UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, D.Range.Begin, | ||||||||
5440 | UpdateRes.get()); | ||||||||
5441 | if (!UpdateRes.isUsable()) { | ||||||||
5442 | IsCorrect = false; | ||||||||
5443 | continue; | ||||||||
5444 | } | ||||||||
5445 | ExprResult VDRes = | ||||||||
5446 | BuildDeclRefExpr(cast<VarDecl>(D.IteratorDecl), | ||||||||
5447 | cast<VarDecl>(D.IteratorDecl)->getType(), VK_LValue, | ||||||||
5448 | D.IteratorDecl->getBeginLoc()); | ||||||||
5449 | UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Assign, VDRes.get(), | ||||||||
5450 | UpdateRes.get()); | ||||||||
5451 | if (!UpdateRes.isUsable()) { | ||||||||
5452 | IsCorrect = false; | ||||||||
5453 | continue; | ||||||||
5454 | } | ||||||||
5455 | UpdateRes = | ||||||||
5456 | ActOnFinishFullExpr(UpdateRes.get(), /*DiscardedValue=*/true); | ||||||||
5457 | if (!UpdateRes.isUsable()) { | ||||||||
5458 | IsCorrect = false; | ||||||||
5459 | continue; | ||||||||
5460 | } | ||||||||
5461 | ExprResult CounterUpdateRes = | ||||||||
5462 | CreateBuiltinUnaryOp(D.AssignmentLoc, UO_PreInc, RefRes.get()); | ||||||||
5463 | if (!CounterUpdateRes.isUsable()) { | ||||||||
5464 | IsCorrect = false; | ||||||||
5465 | continue; | ||||||||
5466 | } | ||||||||
5467 | CounterUpdateRes = | ||||||||
5468 | ActOnFinishFullExpr(CounterUpdateRes.get(), /*DiscardedValue=*/true); | ||||||||
5469 | if (!CounterUpdateRes.isUsable()) { | ||||||||
5470 | IsCorrect = false; | ||||||||
5471 | continue; | ||||||||
5472 | } | ||||||||
5473 | OMPIteratorHelperData &HD = Helpers.emplace_back(); | ||||||||
5474 | HD.CounterVD = CounterVD; | ||||||||
5475 | HD.Upper = Res.get(); | ||||||||
5476 | HD.Update = UpdateRes.get(); | ||||||||
5477 | HD.CounterUpdate = CounterUpdateRes.get(); | ||||||||
5478 | } | ||||||||
5479 | } else { | ||||||||
5480 | Helpers.assign(ID.size(), {}); | ||||||||
5481 | } | ||||||||
5482 | if (!IsCorrect) { | ||||||||
5483 | // Invalidate all created iterator declarations if error is found. | ||||||||
5484 | for (const OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||||||
5485 | if (Decl *ID = D.IteratorDecl) | ||||||||
5486 | ID->setInvalidDecl(); | ||||||||
5487 | } | ||||||||
5488 | return ExprError(); | ||||||||
5489 | } | ||||||||
5490 | return OMPIteratorExpr::Create(Context, Context.OMPIteratorTy, IteratorKwLoc, | ||||||||
5491 | LLoc, RLoc, ID, Helpers); | ||||||||
5492 | } | ||||||||
5493 | |||||||||
5494 | ExprResult | ||||||||
5495 | Sema::CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, | ||||||||
5496 | Expr *Idx, SourceLocation RLoc) { | ||||||||
5497 | Expr *LHSExp = Base; | ||||||||
5498 | Expr *RHSExp = Idx; | ||||||||
5499 | |||||||||
5500 | ExprValueKind VK = VK_LValue; | ||||||||
5501 | ExprObjectKind OK = OK_Ordinary; | ||||||||
5502 | |||||||||
5503 | // Per C++ core issue 1213, the result is an xvalue if either operand is | ||||||||
5504 | // a non-lvalue array, and an lvalue otherwise. | ||||||||
5505 | if (getLangOpts().CPlusPlus11) { | ||||||||
5506 | for (auto *Op : {LHSExp, RHSExp}) { | ||||||||
5507 | Op = Op->IgnoreImplicit(); | ||||||||
5508 | if (Op->getType()->isArrayType() && !Op->isLValue()) | ||||||||
5509 | VK = VK_XValue; | ||||||||
5510 | } | ||||||||
5511 | } | ||||||||
5512 | |||||||||
5513 | // Perform default conversions. | ||||||||
5514 | if (!LHSExp->getType()->getAs<VectorType>()) { | ||||||||
5515 | ExprResult Result = DefaultFunctionArrayLvalueConversion(LHSExp); | ||||||||
5516 | if (Result.isInvalid()) | ||||||||
5517 | return ExprError(); | ||||||||
5518 | LHSExp = Result.get(); | ||||||||
5519 | } | ||||||||
5520 | ExprResult Result = DefaultFunctionArrayLvalueConversion(RHSExp); | ||||||||
5521 | if (Result.isInvalid()) | ||||||||
5522 | return ExprError(); | ||||||||
5523 | RHSExp = Result.get(); | ||||||||
5524 | |||||||||
5525 | QualType LHSTy = LHSExp->getType(), RHSTy = RHSExp->getType(); | ||||||||
5526 | |||||||||
5527 | // C99 6.5.2.1p2: the expression e1[e2] is by definition precisely equivalent | ||||||||
5528 | // to the expression *((e1)+(e2)). This means the array "Base" may actually be | ||||||||
5529 | // in the subscript position. As a result, we need to derive the array base | ||||||||
5530 | // and index from the expression types. | ||||||||
5531 | Expr *BaseExpr, *IndexExpr; | ||||||||
5532 | QualType ResultType; | ||||||||
5533 | if (LHSTy->isDependentType() || RHSTy->isDependentType()) { | ||||||||
5534 | BaseExpr = LHSExp; | ||||||||
5535 | IndexExpr = RHSExp; | ||||||||
5536 | ResultType = Context.DependentTy; | ||||||||
5537 | } else if (const PointerType *PTy = LHSTy->getAs<PointerType>()) { | ||||||||
5538 | BaseExpr = LHSExp; | ||||||||
5539 | IndexExpr = RHSExp; | ||||||||
5540 | ResultType = PTy->getPointeeType(); | ||||||||
5541 | } else if (const ObjCObjectPointerType *PTy = | ||||||||
5542 | LHSTy->getAs<ObjCObjectPointerType>()) { | ||||||||
5543 | BaseExpr = LHSExp; | ||||||||
5544 | IndexExpr = RHSExp; | ||||||||
5545 | |||||||||
5546 | // Use custom logic if this should be the pseudo-object subscript | ||||||||
5547 | // expression. | ||||||||
5548 | if (!LangOpts.isSubscriptPointerArithmetic()) | ||||||||
5549 | return BuildObjCSubscriptExpression(RLoc, BaseExpr, IndexExpr, nullptr, | ||||||||
5550 | nullptr); | ||||||||
5551 | |||||||||
5552 | ResultType = PTy->getPointeeType(); | ||||||||
5553 | } else if (const PointerType *PTy = RHSTy->getAs<PointerType>()) { | ||||||||
5554 | // Handle the uncommon case of "123[Ptr]". | ||||||||
5555 | BaseExpr = RHSExp; | ||||||||
5556 | IndexExpr = LHSExp; | ||||||||
5557 | ResultType = PTy->getPointeeType(); | ||||||||
5558 | } else if (const ObjCObjectPointerType *PTy = | ||||||||
5559 | RHSTy->getAs<ObjCObjectPointerType>()) { | ||||||||
5560 | // Handle the uncommon case of "123[Ptr]". | ||||||||
5561 | BaseExpr = RHSExp; | ||||||||
5562 | IndexExpr = LHSExp; | ||||||||
5563 | ResultType = PTy->getPointeeType(); | ||||||||
5564 | if (!LangOpts.isSubscriptPointerArithmetic()) { | ||||||||
5565 | Diag(LLoc, diag::err_subscript_nonfragile_interface) | ||||||||
5566 | << ResultType << BaseExpr->getSourceRange(); | ||||||||
5567 | return ExprError(); | ||||||||
5568 | } | ||||||||
5569 | } else if (const VectorType *VTy = LHSTy->getAs<VectorType>()) { | ||||||||
5570 | BaseExpr = LHSExp; // vectors: V[123] | ||||||||
5571 | IndexExpr = RHSExp; | ||||||||
5572 | // We apply C++ DR1213 to vector subscripting too. | ||||||||
5573 | if (getLangOpts().CPlusPlus11 && LHSExp->isPRValue()) { | ||||||||
5574 | ExprResult Materialized = TemporaryMaterializationConversion(LHSExp); | ||||||||
5575 | if (Materialized.isInvalid()) | ||||||||
5576 | return ExprError(); | ||||||||
5577 | LHSExp = Materialized.get(); | ||||||||
5578 | } | ||||||||
5579 | VK = LHSExp->getValueKind(); | ||||||||
5580 | if (VK != VK_PRValue) | ||||||||
5581 | OK = OK_VectorComponent; | ||||||||
5582 | |||||||||
5583 | ResultType = VTy->getElementType(); | ||||||||
5584 | QualType BaseType = BaseExpr->getType(); | ||||||||
5585 | Qualifiers BaseQuals = BaseType.getQualifiers(); | ||||||||
5586 | Qualifiers MemberQuals = ResultType.getQualifiers(); | ||||||||
5587 | Qualifiers Combined = BaseQuals + MemberQuals; | ||||||||
5588 | if (Combined != MemberQuals) | ||||||||
5589 | ResultType = Context.getQualifiedType(ResultType, Combined); | ||||||||
5590 | } else if (LHSTy->isArrayType()) { | ||||||||
5591 | // If we see an array that wasn't promoted by | ||||||||
5592 | // DefaultFunctionArrayLvalueConversion, it must be an array that | ||||||||
5593 | // wasn't promoted because of the C90 rule that doesn't | ||||||||
5594 | // allow promoting non-lvalue arrays. Warn, then | ||||||||
5595 | // force the promotion here. | ||||||||
5596 | Diag(LHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) | ||||||||
5597 | << LHSExp->getSourceRange(); | ||||||||
5598 | LHSExp = ImpCastExprToType(LHSExp, Context.getArrayDecayedType(LHSTy), | ||||||||
5599 | CK_ArrayToPointerDecay).get(); | ||||||||
5600 | LHSTy = LHSExp->getType(); | ||||||||
5601 | |||||||||
5602 | BaseExpr = LHSExp; | ||||||||
5603 | IndexExpr = RHSExp; | ||||||||
5604 | ResultType = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
5605 | } else if (RHSTy->isArrayType()) { | ||||||||
5606 | // Same as previous, except for 123[f().a] case | ||||||||
5607 | Diag(RHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) | ||||||||
5608 | << RHSExp->getSourceRange(); | ||||||||
5609 | RHSExp = ImpCastExprToType(RHSExp, Context.getArrayDecayedType(RHSTy), | ||||||||
5610 | CK_ArrayToPointerDecay).get(); | ||||||||
5611 | RHSTy = RHSExp->getType(); | ||||||||
5612 | |||||||||
5613 | BaseExpr = RHSExp; | ||||||||
5614 | IndexExpr = LHSExp; | ||||||||
5615 | ResultType = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
5616 | } else { | ||||||||
5617 | return ExprError(Diag(LLoc, diag::err_typecheck_subscript_value) | ||||||||
5618 | << LHSExp->getSourceRange() << RHSExp->getSourceRange()); | ||||||||
5619 | } | ||||||||
5620 | // C99 6.5.2.1p1 | ||||||||
5621 | if (!IndexExpr->getType()->isIntegerType() && !IndexExpr->isTypeDependent()) | ||||||||
5622 | return ExprError(Diag(LLoc, diag::err_typecheck_subscript_not_integer) | ||||||||
5623 | << IndexExpr->getSourceRange()); | ||||||||
5624 | |||||||||
5625 | if ((IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
5626 | IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
5627 | && !IndexExpr->isTypeDependent()) | ||||||||
5628 | Diag(LLoc, diag::warn_subscript_is_char) << IndexExpr->getSourceRange(); | ||||||||
5629 | |||||||||
5630 | // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, | ||||||||
5631 | // C++ [expr.sub]p1: The type "T" shall be a completely-defined object | ||||||||
5632 | // type. Note that Functions are not objects, and that (in C99 parlance) | ||||||||
5633 | // incomplete types are not object types. | ||||||||
5634 | if (ResultType->isFunctionType()) { | ||||||||
5635 | Diag(BaseExpr->getBeginLoc(), diag::err_subscript_function_type) | ||||||||
5636 | << ResultType << BaseExpr->getSourceRange(); | ||||||||
5637 | return ExprError(); | ||||||||
5638 | } | ||||||||
5639 | |||||||||
5640 | if (ResultType->isVoidType() && !getLangOpts().CPlusPlus) { | ||||||||
5641 | // GNU extension: subscripting on pointer to void | ||||||||
5642 | Diag(LLoc, diag::ext_gnu_subscript_void_type) | ||||||||
5643 | << BaseExpr->getSourceRange(); | ||||||||
5644 | |||||||||
5645 | // C forbids expressions of unqualified void type from being l-values. | ||||||||
5646 | // See IsCForbiddenLValueType. | ||||||||
5647 | if (!ResultType.hasQualifiers()) | ||||||||
5648 | VK = VK_PRValue; | ||||||||
5649 | } else if (!ResultType->isDependentType() && | ||||||||
5650 | RequireCompleteSizedType( | ||||||||
5651 | LLoc, ResultType, | ||||||||
5652 | diag::err_subscript_incomplete_or_sizeless_type, BaseExpr)) | ||||||||
5653 | return ExprError(); | ||||||||
5654 | |||||||||
5655 | assert(VK == VK_PRValue || LangOpts.CPlusPlus ||(static_cast <bool> (VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()) ? void (0) : __assert_fail ("VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5656, __extension__ __PRETTY_FUNCTION__)) | ||||||||
5656 | !ResultType.isCForbiddenLValueType())(static_cast <bool> (VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()) ? void (0) : __assert_fail ("VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5656, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5657 | |||||||||
5658 | if (LHSExp->IgnoreParenImpCasts()->getType()->isVariablyModifiedType() && | ||||||||
5659 | FunctionScopes.size() > 1) { | ||||||||
5660 | if (auto *TT = | ||||||||
5661 | LHSExp->IgnoreParenImpCasts()->getType()->getAs<TypedefType>()) { | ||||||||
5662 | for (auto I = FunctionScopes.rbegin(), | ||||||||
5663 | E = std::prev(FunctionScopes.rend()); | ||||||||
5664 | I != E; ++I) { | ||||||||
5665 | auto *CSI = dyn_cast<CapturingScopeInfo>(*I); | ||||||||
5666 | if (CSI == nullptr) | ||||||||
5667 | break; | ||||||||
5668 | DeclContext *DC = nullptr; | ||||||||
5669 | if (auto *LSI = dyn_cast<LambdaScopeInfo>(CSI)) | ||||||||
5670 | DC = LSI->CallOperator; | ||||||||
5671 | else if (auto *CRSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) | ||||||||
5672 | DC = CRSI->TheCapturedDecl; | ||||||||
5673 | else if (auto *BSI = dyn_cast<BlockScopeInfo>(CSI)) | ||||||||
5674 | DC = BSI->TheDecl; | ||||||||
5675 | if (DC) { | ||||||||
5676 | if (DC->containsDecl(TT->getDecl())) | ||||||||
5677 | break; | ||||||||
5678 | captureVariablyModifiedType( | ||||||||
5679 | Context, LHSExp->IgnoreParenImpCasts()->getType(), CSI); | ||||||||
5680 | } | ||||||||
5681 | } | ||||||||
5682 | } | ||||||||
5683 | } | ||||||||
5684 | |||||||||
5685 | return new (Context) | ||||||||
5686 | ArraySubscriptExpr(LHSExp, RHSExp, ResultType, VK, OK, RLoc); | ||||||||
5687 | } | ||||||||
5688 | |||||||||
5689 | bool Sema::CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, | ||||||||
5690 | ParmVarDecl *Param) { | ||||||||
5691 | if (Param->hasUnparsedDefaultArg()) { | ||||||||
5692 | // If we've already cleared out the location for the default argument, | ||||||||
5693 | // that means we're parsing it right now. | ||||||||
5694 | if (!UnparsedDefaultArgLocs.count(Param)) { | ||||||||
5695 | Diag(Param->getBeginLoc(), diag::err_recursive_default_argument) << FD; | ||||||||
5696 | Diag(CallLoc, diag::note_recursive_default_argument_used_here); | ||||||||
5697 | Param->setInvalidDecl(); | ||||||||
5698 | return true; | ||||||||
5699 | } | ||||||||
5700 | |||||||||
5701 | Diag(CallLoc, diag::err_use_of_default_argument_to_function_declared_later) | ||||||||
5702 | << FD << cast<CXXRecordDecl>(FD->getDeclContext()); | ||||||||
5703 | Diag(UnparsedDefaultArgLocs[Param], | ||||||||
5704 | diag::note_default_argument_declared_here); | ||||||||
5705 | return true; | ||||||||
5706 | } | ||||||||
5707 | |||||||||
5708 | if (Param->hasUninstantiatedDefaultArg() && | ||||||||
5709 | InstantiateDefaultArgument(CallLoc, FD, Param)) | ||||||||
5710 | return true; | ||||||||
5711 | |||||||||
5712 | assert(Param->hasInit() && "default argument but no initializer?")(static_cast <bool> (Param->hasInit() && "default argument but no initializer?" ) ? void (0) : __assert_fail ("Param->hasInit() && \"default argument but no initializer?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5712, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5713 | |||||||||
5714 | // If the default expression creates temporaries, we need to | ||||||||
5715 | // push them to the current stack of expression temporaries so they'll | ||||||||
5716 | // be properly destroyed. | ||||||||
5717 | // FIXME: We should really be rebuilding the default argument with new | ||||||||
5718 | // bound temporaries; see the comment in PR5810. | ||||||||
5719 | // We don't need to do that with block decls, though, because | ||||||||
5720 | // blocks in default argument expression can never capture anything. | ||||||||
5721 | if (auto Init = dyn_cast<ExprWithCleanups>(Param->getInit())) { | ||||||||
5722 | // Set the "needs cleanups" bit regardless of whether there are | ||||||||
5723 | // any explicit objects. | ||||||||
5724 | Cleanup.setExprNeedsCleanups(Init->cleanupsHaveSideEffects()); | ||||||||
5725 | |||||||||
5726 | // Append all the objects to the cleanup list. Right now, this | ||||||||
5727 | // should always be a no-op, because blocks in default argument | ||||||||
5728 | // expressions should never be able to capture anything. | ||||||||
5729 | assert(!Init->getNumObjects() &&(static_cast <bool> (!Init->getNumObjects() && "default argument expression has capturing blocks?") ? void ( 0) : __assert_fail ("!Init->getNumObjects() && \"default argument expression has capturing blocks?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5730, __extension__ __PRETTY_FUNCTION__)) | ||||||||
5730 | "default argument expression has capturing blocks?")(static_cast <bool> (!Init->getNumObjects() && "default argument expression has capturing blocks?") ? void ( 0) : __assert_fail ("!Init->getNumObjects() && \"default argument expression has capturing blocks?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5730, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5731 | } | ||||||||
5732 | |||||||||
5733 | // We already type-checked the argument, so we know it works. | ||||||||
5734 | // Just mark all of the declarations in this potentially-evaluated expression | ||||||||
5735 | // as being "referenced". | ||||||||
5736 | EnterExpressionEvaluationContext EvalContext( | ||||||||
5737 | *this, ExpressionEvaluationContext::PotentiallyEvaluated, Param); | ||||||||
5738 | MarkDeclarationsReferencedInExpr(Param->getDefaultArg(), | ||||||||
5739 | /*SkipLocalVariables=*/true); | ||||||||
5740 | return false; | ||||||||
5741 | } | ||||||||
5742 | |||||||||
5743 | ExprResult Sema::BuildCXXDefaultArgExpr(SourceLocation CallLoc, | ||||||||
5744 | FunctionDecl *FD, ParmVarDecl *Param) { | ||||||||
5745 | assert(Param->hasDefaultArg() && "can't build nonexistent default arg")(static_cast <bool> (Param->hasDefaultArg() && "can't build nonexistent default arg") ? void (0) : __assert_fail ("Param->hasDefaultArg() && \"can't build nonexistent default arg\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5745, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5746 | if (CheckCXXDefaultArgExpr(CallLoc, FD, Param)) | ||||||||
5747 | return ExprError(); | ||||||||
5748 | return CXXDefaultArgExpr::Create(Context, CallLoc, Param, CurContext); | ||||||||
5749 | } | ||||||||
5750 | |||||||||
5751 | Sema::VariadicCallType | ||||||||
5752 | Sema::getVariadicCallType(FunctionDecl *FDecl, const FunctionProtoType *Proto, | ||||||||
5753 | Expr *Fn) { | ||||||||
5754 | if (Proto && Proto->isVariadic()) { | ||||||||
5755 | if (dyn_cast_or_null<CXXConstructorDecl>(FDecl)) | ||||||||
5756 | return VariadicConstructor; | ||||||||
5757 | else if (Fn && Fn->getType()->isBlockPointerType()) | ||||||||
5758 | return VariadicBlock; | ||||||||
5759 | else if (FDecl) { | ||||||||
5760 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl)) | ||||||||
5761 | if (Method->isInstance()) | ||||||||
5762 | return VariadicMethod; | ||||||||
5763 | } else if (Fn && Fn->getType() == Context.BoundMemberTy) | ||||||||
5764 | return VariadicMethod; | ||||||||
5765 | return VariadicFunction; | ||||||||
5766 | } | ||||||||
5767 | return VariadicDoesNotApply; | ||||||||
5768 | } | ||||||||
5769 | |||||||||
5770 | namespace { | ||||||||
5771 | class FunctionCallCCC final : public FunctionCallFilterCCC { | ||||||||
5772 | public: | ||||||||
5773 | FunctionCallCCC(Sema &SemaRef, const IdentifierInfo *FuncName, | ||||||||
5774 | unsigned NumArgs, MemberExpr *ME) | ||||||||
5775 | : FunctionCallFilterCCC(SemaRef, NumArgs, false, ME), | ||||||||
5776 | FunctionName(FuncName) {} | ||||||||
5777 | |||||||||
5778 | bool ValidateCandidate(const TypoCorrection &candidate) override { | ||||||||
5779 | if (!candidate.getCorrectionSpecifier() || | ||||||||
5780 | candidate.getCorrectionAsIdentifierInfo() != FunctionName) { | ||||||||
5781 | return false; | ||||||||
5782 | } | ||||||||
5783 | |||||||||
5784 | return FunctionCallFilterCCC::ValidateCandidate(candidate); | ||||||||
5785 | } | ||||||||
5786 | |||||||||
5787 | std::unique_ptr<CorrectionCandidateCallback> clone() override { | ||||||||
5788 | return std::make_unique<FunctionCallCCC>(*this); | ||||||||
5789 | } | ||||||||
5790 | |||||||||
5791 | private: | ||||||||
5792 | const IdentifierInfo *const FunctionName; | ||||||||
5793 | }; | ||||||||
5794 | } | ||||||||
5795 | |||||||||
5796 | static TypoCorrection TryTypoCorrectionForCall(Sema &S, Expr *Fn, | ||||||||
5797 | FunctionDecl *FDecl, | ||||||||
5798 | ArrayRef<Expr *> Args) { | ||||||||
5799 | MemberExpr *ME = dyn_cast<MemberExpr>(Fn); | ||||||||
5800 | DeclarationName FuncName = FDecl->getDeclName(); | ||||||||
5801 | SourceLocation NameLoc = ME ? ME->getMemberLoc() : Fn->getBeginLoc(); | ||||||||
5802 | |||||||||
5803 | FunctionCallCCC CCC(S, FuncName.getAsIdentifierInfo(), Args.size(), ME); | ||||||||
5804 | if (TypoCorrection Corrected = S.CorrectTypo( | ||||||||
5805 | DeclarationNameInfo(FuncName, NameLoc), Sema::LookupOrdinaryName, | ||||||||
5806 | S.getScopeForContext(S.CurContext), nullptr, CCC, | ||||||||
5807 | Sema::CTK_ErrorRecovery)) { | ||||||||
5808 | if (NamedDecl *ND = Corrected.getFoundDecl()) { | ||||||||
5809 | if (Corrected.isOverloaded()) { | ||||||||
5810 | OverloadCandidateSet OCS(NameLoc, OverloadCandidateSet::CSK_Normal); | ||||||||
5811 | OverloadCandidateSet::iterator Best; | ||||||||
5812 | for (NamedDecl *CD : Corrected) { | ||||||||
5813 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(CD)) | ||||||||
5814 | S.AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), Args, | ||||||||
5815 | OCS); | ||||||||
5816 | } | ||||||||
5817 | switch (OCS.BestViableFunction(S, NameLoc, Best)) { | ||||||||
5818 | case OR_Success: | ||||||||
5819 | ND = Best->FoundDecl; | ||||||||
5820 | Corrected.setCorrectionDecl(ND); | ||||||||
5821 | break; | ||||||||
5822 | default: | ||||||||
5823 | break; | ||||||||
5824 | } | ||||||||
5825 | } | ||||||||
5826 | ND = ND->getUnderlyingDecl(); | ||||||||
5827 | if (isa<ValueDecl>(ND) || isa<FunctionTemplateDecl>(ND)) | ||||||||
5828 | return Corrected; | ||||||||
5829 | } | ||||||||
5830 | } | ||||||||
5831 | return TypoCorrection(); | ||||||||
5832 | } | ||||||||
5833 | |||||||||
5834 | /// ConvertArgumentsForCall - Converts the arguments specified in | ||||||||
5835 | /// Args/NumArgs to the parameter types of the function FDecl with | ||||||||
5836 | /// function prototype Proto. Call is the call expression itself, and | ||||||||
5837 | /// Fn is the function expression. For a C++ member function, this | ||||||||
5838 | /// routine does not attempt to convert the object argument. Returns | ||||||||
5839 | /// true if the call is ill-formed. | ||||||||
5840 | bool | ||||||||
5841 | Sema::ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, | ||||||||
5842 | FunctionDecl *FDecl, | ||||||||
5843 | const FunctionProtoType *Proto, | ||||||||
5844 | ArrayRef<Expr *> Args, | ||||||||
5845 | SourceLocation RParenLoc, | ||||||||
5846 | bool IsExecConfig) { | ||||||||
5847 | // Bail out early if calling a builtin with custom typechecking. | ||||||||
5848 | if (FDecl) | ||||||||
5849 | if (unsigned ID = FDecl->getBuiltinID()) | ||||||||
5850 | if (Context.BuiltinInfo.hasCustomTypechecking(ID)) | ||||||||
5851 | return false; | ||||||||
5852 | |||||||||
5853 | // C99 6.5.2.2p7 - the arguments are implicitly converted, as if by | ||||||||
5854 | // assignment, to the types of the corresponding parameter, ... | ||||||||
5855 | unsigned NumParams = Proto->getNumParams(); | ||||||||
5856 | bool Invalid = false; | ||||||||
5857 | unsigned MinArgs = FDecl ? FDecl->getMinRequiredArguments() : NumParams; | ||||||||
5858 | unsigned FnKind = Fn->getType()->isBlockPointerType() | ||||||||
5859 | ? 1 /* block */ | ||||||||
5860 | : (IsExecConfig ? 3 /* kernel function (exec config) */ | ||||||||
5861 | : 0 /* function */); | ||||||||
5862 | |||||||||
5863 | // If too few arguments are available (and we don't have default | ||||||||
5864 | // arguments for the remaining parameters), don't make the call. | ||||||||
5865 | if (Args.size() < NumParams) { | ||||||||
5866 | if (Args.size() < MinArgs) { | ||||||||
5867 | TypoCorrection TC; | ||||||||
5868 | if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { | ||||||||
5869 | unsigned diag_id = | ||||||||
5870 | MinArgs == NumParams && !Proto->isVariadic() | ||||||||
5871 | ? diag::err_typecheck_call_too_few_args_suggest | ||||||||
5872 | : diag::err_typecheck_call_too_few_args_at_least_suggest; | ||||||||
5873 | diagnoseTypo(TC, PDiag(diag_id) << FnKind << MinArgs | ||||||||
5874 | << static_cast<unsigned>(Args.size()) | ||||||||
5875 | << TC.getCorrectionRange()); | ||||||||
5876 | } else if (MinArgs == 1 && FDecl && FDecl->getParamDecl(0)->getDeclName()) | ||||||||
5877 | Diag(RParenLoc, | ||||||||
5878 | MinArgs == NumParams && !Proto->isVariadic() | ||||||||
5879 | ? diag::err_typecheck_call_too_few_args_one | ||||||||
5880 | : diag::err_typecheck_call_too_few_args_at_least_one) | ||||||||
5881 | << FnKind << FDecl->getParamDecl(0) << Fn->getSourceRange(); | ||||||||
5882 | else | ||||||||
5883 | Diag(RParenLoc, MinArgs == NumParams && !Proto->isVariadic() | ||||||||
5884 | ? diag::err_typecheck_call_too_few_args | ||||||||
5885 | : diag::err_typecheck_call_too_few_args_at_least) | ||||||||
5886 | << FnKind << MinArgs << static_cast<unsigned>(Args.size()) | ||||||||
5887 | << Fn->getSourceRange(); | ||||||||
5888 | |||||||||
5889 | // Emit the location of the prototype. | ||||||||
5890 | if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) | ||||||||
5891 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||||||
5892 | |||||||||
5893 | return true; | ||||||||
5894 | } | ||||||||
5895 | // We reserve space for the default arguments when we create | ||||||||
5896 | // the call expression, before calling ConvertArgumentsForCall. | ||||||||
5897 | assert((Call->getNumArgs() == NumParams) &&(static_cast <bool> ((Call->getNumArgs() == NumParams ) && "We should have reserved space for the default arguments before!" ) ? void (0) : __assert_fail ("(Call->getNumArgs() == NumParams) && \"We should have reserved space for the default arguments before!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5898, __extension__ __PRETTY_FUNCTION__)) | ||||||||
5898 | "We should have reserved space for the default arguments before!")(static_cast <bool> ((Call->getNumArgs() == NumParams ) && "We should have reserved space for the default arguments before!" ) ? void (0) : __assert_fail ("(Call->getNumArgs() == NumParams) && \"We should have reserved space for the default arguments before!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 5898, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5899 | } | ||||||||
5900 | |||||||||
5901 | // If too many are passed and not variadic, error on the extras and drop | ||||||||
5902 | // them. | ||||||||
5903 | if (Args.size() > NumParams) { | ||||||||
5904 | if (!Proto->isVariadic()) { | ||||||||
5905 | TypoCorrection TC; | ||||||||
5906 | if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { | ||||||||
5907 | unsigned diag_id = | ||||||||
5908 | MinArgs == NumParams && !Proto->isVariadic() | ||||||||
5909 | ? diag::err_typecheck_call_too_many_args_suggest | ||||||||
5910 | : diag::err_typecheck_call_too_many_args_at_most_suggest; | ||||||||
5911 | diagnoseTypo(TC, PDiag(diag_id) << FnKind << NumParams | ||||||||
5912 | << static_cast<unsigned>(Args.size()) | ||||||||
5913 | << TC.getCorrectionRange()); | ||||||||
5914 | } else if (NumParams == 1 && FDecl && | ||||||||
5915 | FDecl->getParamDecl(0)->getDeclName()) | ||||||||
5916 | Diag(Args[NumParams]->getBeginLoc(), | ||||||||
5917 | MinArgs == NumParams | ||||||||
5918 | ? diag::err_typecheck_call_too_many_args_one | ||||||||
5919 | : diag::err_typecheck_call_too_many_args_at_most_one) | ||||||||
5920 | << FnKind << FDecl->getParamDecl(0) | ||||||||
5921 | << static_cast<unsigned>(Args.size()) << Fn->getSourceRange() | ||||||||
5922 | << SourceRange(Args[NumParams]->getBeginLoc(), | ||||||||
5923 | Args.back()->getEndLoc()); | ||||||||
5924 | else | ||||||||
5925 | Diag(Args[NumParams]->getBeginLoc(), | ||||||||
5926 | MinArgs == NumParams | ||||||||
5927 | ? diag::err_typecheck_call_too_many_args | ||||||||
5928 | : diag::err_typecheck_call_too_many_args_at_most) | ||||||||
5929 | << FnKind << NumParams << static_cast<unsigned>(Args.size()) | ||||||||
5930 | << Fn->getSourceRange() | ||||||||
5931 | << SourceRange(Args[NumParams]->getBeginLoc(), | ||||||||
5932 | Args.back()->getEndLoc()); | ||||||||
5933 | |||||||||
5934 | // Emit the location of the prototype. | ||||||||
5935 | if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) | ||||||||
5936 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||||||
5937 | |||||||||
5938 | // This deletes the extra arguments. | ||||||||
5939 | Call->shrinkNumArgs(NumParams); | ||||||||
5940 | return true; | ||||||||
5941 | } | ||||||||
5942 | } | ||||||||
5943 | SmallVector<Expr *, 8> AllArgs; | ||||||||
5944 | VariadicCallType CallType = getVariadicCallType(FDecl, Proto, Fn); | ||||||||
5945 | |||||||||
5946 | Invalid = GatherArgumentsForCall(Call->getBeginLoc(), FDecl, Proto, 0, Args, | ||||||||
5947 | AllArgs, CallType); | ||||||||
5948 | if (Invalid) | ||||||||
5949 | return true; | ||||||||
5950 | unsigned TotalNumArgs = AllArgs.size(); | ||||||||
5951 | for (unsigned i = 0; i < TotalNumArgs; ++i) | ||||||||
5952 | Call->setArg(i, AllArgs[i]); | ||||||||
5953 | |||||||||
5954 | Call->computeDependence(); | ||||||||
5955 | return false; | ||||||||
5956 | } | ||||||||
5957 | |||||||||
5958 | bool Sema::GatherArgumentsForCall(SourceLocation CallLoc, FunctionDecl *FDecl, | ||||||||
5959 | const FunctionProtoType *Proto, | ||||||||
5960 | unsigned FirstParam, ArrayRef<Expr *> Args, | ||||||||
5961 | SmallVectorImpl<Expr *> &AllArgs, | ||||||||
5962 | VariadicCallType CallType, bool AllowExplicit, | ||||||||
5963 | bool IsListInitialization) { | ||||||||
5964 | unsigned NumParams = Proto->getNumParams(); | ||||||||
5965 | bool Invalid = false; | ||||||||
5966 | size_t ArgIx = 0; | ||||||||
5967 | // Continue to check argument types (even if we have too few/many args). | ||||||||
5968 | for (unsigned i = FirstParam; i < NumParams; i++) { | ||||||||
5969 | QualType ProtoArgType = Proto->getParamType(i); | ||||||||
5970 | |||||||||
5971 | Expr *Arg; | ||||||||
5972 | ParmVarDecl *Param = FDecl ? FDecl->getParamDecl(i) : nullptr; | ||||||||
5973 | if (ArgIx < Args.size()) { | ||||||||
5974 | Arg = Args[ArgIx++]; | ||||||||
5975 | |||||||||
5976 | if (RequireCompleteType(Arg->getBeginLoc(), ProtoArgType, | ||||||||
5977 | diag::err_call_incomplete_argument, Arg)) | ||||||||
5978 | return true; | ||||||||
5979 | |||||||||
5980 | // Strip the unbridged-cast placeholder expression off, if applicable. | ||||||||
5981 | bool CFAudited = false; | ||||||||
5982 | if (Arg->getType() == Context.ARCUnbridgedCastTy && | ||||||||
5983 | FDecl && FDecl->hasAttr<CFAuditedTransferAttr>() && | ||||||||
5984 | (!Param || !Param->hasAttr<CFConsumedAttr>())) | ||||||||
5985 | Arg = stripARCUnbridgedCast(Arg); | ||||||||
5986 | else if (getLangOpts().ObjCAutoRefCount && | ||||||||
5987 | FDecl && FDecl->hasAttr<CFAuditedTransferAttr>() && | ||||||||
5988 | (!Param || !Param->hasAttr<CFConsumedAttr>())) | ||||||||
5989 | CFAudited = true; | ||||||||
5990 | |||||||||
5991 | if (Proto->getExtParameterInfo(i).isNoEscape() && | ||||||||
5992 | ProtoArgType->isBlockPointerType()) | ||||||||
5993 | if (auto *BE = dyn_cast<BlockExpr>(Arg->IgnoreParenNoopCasts(Context))) | ||||||||
5994 | BE->getBlockDecl()->setDoesNotEscape(); | ||||||||
5995 | |||||||||
5996 | InitializedEntity Entity = | ||||||||
5997 | Param ? InitializedEntity::InitializeParameter(Context, Param, | ||||||||
5998 | ProtoArgType) | ||||||||
5999 | : InitializedEntity::InitializeParameter( | ||||||||
6000 | Context, ProtoArgType, Proto->isParamConsumed(i)); | ||||||||
6001 | |||||||||
6002 | // Remember that parameter belongs to a CF audited API. | ||||||||
6003 | if (CFAudited) | ||||||||
6004 | Entity.setParameterCFAudited(); | ||||||||
6005 | |||||||||
6006 | ExprResult ArgE = PerformCopyInitialization( | ||||||||
6007 | Entity, SourceLocation(), Arg, IsListInitialization, AllowExplicit); | ||||||||
6008 | if (ArgE.isInvalid()) | ||||||||
6009 | return true; | ||||||||
6010 | |||||||||
6011 | Arg = ArgE.getAs<Expr>(); | ||||||||
6012 | } else { | ||||||||
6013 | assert(Param && "can't use default arguments without a known callee")(static_cast <bool> (Param && "can't use default arguments without a known callee" ) ? void (0) : __assert_fail ("Param && \"can't use default arguments without a known callee\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6013, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6014 | |||||||||
6015 | ExprResult ArgExpr = BuildCXXDefaultArgExpr(CallLoc, FDecl, Param); | ||||||||
6016 | if (ArgExpr.isInvalid()) | ||||||||
6017 | return true; | ||||||||
6018 | |||||||||
6019 | Arg = ArgExpr.getAs<Expr>(); | ||||||||
6020 | } | ||||||||
6021 | |||||||||
6022 | // Check for array bounds violations for each argument to the call. This | ||||||||
6023 | // check only triggers warnings when the argument isn't a more complex Expr | ||||||||
6024 | // with its own checking, such as a BinaryOperator. | ||||||||
6025 | CheckArrayAccess(Arg); | ||||||||
6026 | |||||||||
6027 | // Check for violations of C99 static array rules (C99 6.7.5.3p7). | ||||||||
6028 | CheckStaticArrayArgument(CallLoc, Param, Arg); | ||||||||
6029 | |||||||||
6030 | AllArgs.push_back(Arg); | ||||||||
6031 | } | ||||||||
6032 | |||||||||
6033 | // If this is a variadic call, handle args passed through "...". | ||||||||
6034 | if (CallType != VariadicDoesNotApply) { | ||||||||
6035 | // Assume that extern "C" functions with variadic arguments that | ||||||||
6036 | // return __unknown_anytype aren't *really* variadic. | ||||||||
6037 | if (Proto->getReturnType() == Context.UnknownAnyTy && FDecl && | ||||||||
6038 | FDecl->isExternC()) { | ||||||||
6039 | for (Expr *A : Args.slice(ArgIx)) { | ||||||||
6040 | QualType paramType; // ignored | ||||||||
6041 | ExprResult arg = checkUnknownAnyArg(CallLoc, A, paramType); | ||||||||
6042 | Invalid |= arg.isInvalid(); | ||||||||
6043 | AllArgs.push_back(arg.get()); | ||||||||
6044 | } | ||||||||
6045 | |||||||||
6046 | // Otherwise do argument promotion, (C99 6.5.2.2p7). | ||||||||
6047 | } else { | ||||||||
6048 | for (Expr *A : Args.slice(ArgIx)) { | ||||||||
6049 | ExprResult Arg = DefaultVariadicArgumentPromotion(A, CallType, FDecl); | ||||||||
6050 | Invalid |= Arg.isInvalid(); | ||||||||
6051 | AllArgs.push_back(Arg.get()); | ||||||||
6052 | } | ||||||||
6053 | } | ||||||||
6054 | |||||||||
6055 | // Check for array bounds violations. | ||||||||
6056 | for (Expr *A : Args.slice(ArgIx)) | ||||||||
6057 | CheckArrayAccess(A); | ||||||||
6058 | } | ||||||||
6059 | return Invalid; | ||||||||
6060 | } | ||||||||
6061 | |||||||||
6062 | static void DiagnoseCalleeStaticArrayParam(Sema &S, ParmVarDecl *PVD) { | ||||||||
6063 | TypeLoc TL = PVD->getTypeSourceInfo()->getTypeLoc(); | ||||||||
6064 | if (DecayedTypeLoc DTL = TL.getAs<DecayedTypeLoc>()) | ||||||||
6065 | TL = DTL.getOriginalLoc(); | ||||||||
6066 | if (ArrayTypeLoc ATL = TL.getAs<ArrayTypeLoc>()) | ||||||||
6067 | S.Diag(PVD->getLocation(), diag::note_callee_static_array) | ||||||||
6068 | << ATL.getLocalSourceRange(); | ||||||||
6069 | } | ||||||||
6070 | |||||||||
6071 | /// CheckStaticArrayArgument - If the given argument corresponds to a static | ||||||||
6072 | /// array parameter, check that it is non-null, and that if it is formed by | ||||||||
6073 | /// array-to-pointer decay, the underlying array is sufficiently large. | ||||||||
6074 | /// | ||||||||
6075 | /// C99 6.7.5.3p7: If the keyword static also appears within the [ and ] of the | ||||||||
6076 | /// array type derivation, then for each call to the function, the value of the | ||||||||
6077 | /// corresponding actual argument shall provide access to the first element of | ||||||||
6078 | /// an array with at least as many elements as specified by the size expression. | ||||||||
6079 | void | ||||||||
6080 | Sema::CheckStaticArrayArgument(SourceLocation CallLoc, | ||||||||
6081 | ParmVarDecl *Param, | ||||||||
6082 | const Expr *ArgExpr) { | ||||||||
6083 | // Static array parameters are not supported in C++. | ||||||||
6084 | if (!Param || getLangOpts().CPlusPlus) | ||||||||
6085 | return; | ||||||||
6086 | |||||||||
6087 | QualType OrigTy = Param->getOriginalType(); | ||||||||
6088 | |||||||||
6089 | const ArrayType *AT = Context.getAsArrayType(OrigTy); | ||||||||
6090 | if (!AT || AT->getSizeModifier() != ArrayType::Static) | ||||||||
6091 | return; | ||||||||
6092 | |||||||||
6093 | if (ArgExpr->isNullPointerConstant(Context, | ||||||||
6094 | Expr::NPC_NeverValueDependent)) { | ||||||||
6095 | Diag(CallLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); | ||||||||
6096 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||||||
6097 | return; | ||||||||
6098 | } | ||||||||
6099 | |||||||||
6100 | const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT); | ||||||||
6101 | if (!CAT) | ||||||||
6102 | return; | ||||||||
6103 | |||||||||
6104 | const ConstantArrayType *ArgCAT = | ||||||||
6105 | Context.getAsConstantArrayType(ArgExpr->IgnoreParenCasts()->getType()); | ||||||||
6106 | if (!ArgCAT) | ||||||||
6107 | return; | ||||||||
6108 | |||||||||
6109 | if (getASTContext().hasSameUnqualifiedType(CAT->getElementType(), | ||||||||
6110 | ArgCAT->getElementType())) { | ||||||||
6111 | if (ArgCAT->getSize().ult(CAT->getSize())) { | ||||||||
6112 | Diag(CallLoc, diag::warn_static_array_too_small) | ||||||||
6113 | << ArgExpr->getSourceRange() | ||||||||
6114 | << (unsigned)ArgCAT->getSize().getZExtValue() | ||||||||
6115 | << (unsigned)CAT->getSize().getZExtValue() << 0; | ||||||||
6116 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||||||
6117 | } | ||||||||
6118 | return; | ||||||||
6119 | } | ||||||||
6120 | |||||||||
6121 | Optional<CharUnits> ArgSize = | ||||||||
6122 | getASTContext().getTypeSizeInCharsIfKnown(ArgCAT); | ||||||||
6123 | Optional<CharUnits> ParmSize = getASTContext().getTypeSizeInCharsIfKnown(CAT); | ||||||||
6124 | if (ArgSize && ParmSize && *ArgSize < *ParmSize) { | ||||||||
6125 | Diag(CallLoc, diag::warn_static_array_too_small) | ||||||||
6126 | << ArgExpr->getSourceRange() << (unsigned)ArgSize->getQuantity() | ||||||||
6127 | << (unsigned)ParmSize->getQuantity() << 1; | ||||||||
6128 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||||||
6129 | } | ||||||||
6130 | } | ||||||||
6131 | |||||||||
6132 | /// Given a function expression of unknown-any type, try to rebuild it | ||||||||
6133 | /// to have a function type. | ||||||||
6134 | static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *fn); | ||||||||
6135 | |||||||||
6136 | /// Is the given type a placeholder that we need to lower out | ||||||||
6137 | /// immediately during argument processing? | ||||||||
6138 | static bool isPlaceholderToRemoveAsArg(QualType type) { | ||||||||
6139 | // Placeholders are never sugared. | ||||||||
6140 | const BuiltinType *placeholder = dyn_cast<BuiltinType>(type); | ||||||||
6141 | if (!placeholder) return false; | ||||||||
6142 | |||||||||
6143 | switch (placeholder->getKind()) { | ||||||||
6144 | // Ignore all the non-placeholder types. | ||||||||
6145 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
6146 | case BuiltinType::Id: | ||||||||
6147 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
6148 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
6149 | case BuiltinType::Id: | ||||||||
6150 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
6151 | // In practice we'll never use this, since all SVE types are sugared | ||||||||
6152 | // via TypedefTypes rather than exposed directly as BuiltinTypes. | ||||||||
6153 | #define SVE_TYPE(Name, Id, SingletonId) \ | ||||||||
6154 | case BuiltinType::Id: | ||||||||
6155 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||
6156 | #define PPC_VECTOR_TYPE(Name, Id, Size) \ | ||||||||
6157 | case BuiltinType::Id: | ||||||||
6158 | #include "clang/Basic/PPCTypes.def" | ||||||||
6159 | #define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id: | ||||||||
6160 | #include "clang/Basic/RISCVVTypes.def" | ||||||||
6161 | #define PLACEHOLDER_TYPE(ID, SINGLETON_ID) | ||||||||
6162 | #define BUILTIN_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: | ||||||||
6163 | #include "clang/AST/BuiltinTypes.def" | ||||||||
6164 | return false; | ||||||||
6165 | |||||||||
6166 | // We cannot lower out overload sets; they might validly be resolved | ||||||||
6167 | // by the call machinery. | ||||||||
6168 | case BuiltinType::Overload: | ||||||||
6169 | return false; | ||||||||
6170 | |||||||||
6171 | // Unbridged casts in ARC can be handled in some call positions and | ||||||||
6172 | // should be left in place. | ||||||||
6173 | case BuiltinType::ARCUnbridgedCast: | ||||||||
6174 | return false; | ||||||||
6175 | |||||||||
6176 | // Pseudo-objects should be converted as soon as possible. | ||||||||
6177 | case BuiltinType::PseudoObject: | ||||||||
6178 | return true; | ||||||||
6179 | |||||||||
6180 | // The debugger mode could theoretically but currently does not try | ||||||||
6181 | // to resolve unknown-typed arguments based on known parameter types. | ||||||||
6182 | case BuiltinType::UnknownAny: | ||||||||
6183 | return true; | ||||||||
6184 | |||||||||
6185 | // These are always invalid as call arguments and should be reported. | ||||||||
6186 | case BuiltinType::BoundMember: | ||||||||
6187 | case BuiltinType::BuiltinFn: | ||||||||
6188 | case BuiltinType::IncompleteMatrixIdx: | ||||||||
6189 | case BuiltinType::OMPArraySection: | ||||||||
6190 | case BuiltinType::OMPArrayShaping: | ||||||||
6191 | case BuiltinType::OMPIterator: | ||||||||
6192 | return true; | ||||||||
6193 | |||||||||
6194 | } | ||||||||
6195 | llvm_unreachable("bad builtin type kind")::llvm::llvm_unreachable_internal("bad builtin type kind", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6195); | ||||||||
6196 | } | ||||||||
6197 | |||||||||
6198 | /// Check an argument list for placeholders that we won't try to | ||||||||
6199 | /// handle later. | ||||||||
6200 | static bool checkArgsForPlaceholders(Sema &S, MultiExprArg args) { | ||||||||
6201 | // Apply this processing to all the arguments at once instead of | ||||||||
6202 | // dying at the first failure. | ||||||||
6203 | bool hasInvalid = false; | ||||||||
6204 | for (size_t i = 0, e = args.size(); i != e; i++) { | ||||||||
6205 | if (isPlaceholderToRemoveAsArg(args[i]->getType())) { | ||||||||
6206 | ExprResult result = S.CheckPlaceholderExpr(args[i]); | ||||||||
6207 | if (result.isInvalid()) hasInvalid = true; | ||||||||
6208 | else args[i] = result.get(); | ||||||||
6209 | } | ||||||||
6210 | } | ||||||||
6211 | return hasInvalid; | ||||||||
6212 | } | ||||||||
6213 | |||||||||
6214 | /// If a builtin function has a pointer argument with no explicit address | ||||||||
6215 | /// space, then it should be able to accept a pointer to any address | ||||||||
6216 | /// space as input. In order to do this, we need to replace the | ||||||||
6217 | /// standard builtin declaration with one that uses the same address space | ||||||||
6218 | /// as the call. | ||||||||
6219 | /// | ||||||||
6220 | /// \returns nullptr If this builtin is not a candidate for a rewrite i.e. | ||||||||
6221 | /// it does not contain any pointer arguments without | ||||||||
6222 | /// an address space qualifer. Otherwise the rewritten | ||||||||
6223 | /// FunctionDecl is returned. | ||||||||
6224 | /// TODO: Handle pointer return types. | ||||||||
6225 | static FunctionDecl *rewriteBuiltinFunctionDecl(Sema *Sema, ASTContext &Context, | ||||||||
6226 | FunctionDecl *FDecl, | ||||||||
6227 | MultiExprArg ArgExprs) { | ||||||||
6228 | |||||||||
6229 | QualType DeclType = FDecl->getType(); | ||||||||
6230 | const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(DeclType); | ||||||||
6231 | |||||||||
6232 | if (!Context.BuiltinInfo.hasPtrArgsOrResult(FDecl->getBuiltinID()) || !FT || | ||||||||
6233 | ArgExprs.size() < FT->getNumParams()) | ||||||||
6234 | return nullptr; | ||||||||
6235 | |||||||||
6236 | bool NeedsNewDecl = false; | ||||||||
6237 | unsigned i = 0; | ||||||||
6238 | SmallVector<QualType, 8> OverloadParams; | ||||||||
6239 | |||||||||
6240 | for (QualType ParamType : FT->param_types()) { | ||||||||
6241 | |||||||||
6242 | // Convert array arguments to pointer to simplify type lookup. | ||||||||
6243 | ExprResult ArgRes = | ||||||||
6244 | Sema->DefaultFunctionArrayLvalueConversion(ArgExprs[i++]); | ||||||||
6245 | if (ArgRes.isInvalid()) | ||||||||
6246 | return nullptr; | ||||||||
6247 | Expr *Arg = ArgRes.get(); | ||||||||
6248 | QualType ArgType = Arg->getType(); | ||||||||
6249 | if (!ParamType->isPointerType() || | ||||||||
6250 | ParamType.hasAddressSpace() || | ||||||||
6251 | !ArgType->isPointerType() || | ||||||||
6252 | !ArgType->getPointeeType().hasAddressSpace()) { | ||||||||
6253 | OverloadParams.push_back(ParamType); | ||||||||
6254 | continue; | ||||||||
6255 | } | ||||||||
6256 | |||||||||
6257 | QualType PointeeType = ParamType->getPointeeType(); | ||||||||
6258 | if (PointeeType.hasAddressSpace()) | ||||||||
6259 | continue; | ||||||||
6260 | |||||||||
6261 | NeedsNewDecl = true; | ||||||||
6262 | LangAS AS = ArgType->getPointeeType().getAddressSpace(); | ||||||||
6263 | |||||||||
6264 | PointeeType = Context.getAddrSpaceQualType(PointeeType, AS); | ||||||||
6265 | OverloadParams.push_back(Context.getPointerType(PointeeType)); | ||||||||
6266 | } | ||||||||
6267 | |||||||||
6268 | if (!NeedsNewDecl) | ||||||||
6269 | return nullptr; | ||||||||
6270 | |||||||||
6271 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
6272 | EPI.Variadic = FT->isVariadic(); | ||||||||
6273 | QualType OverloadTy = Context.getFunctionType(FT->getReturnType(), | ||||||||
6274 | OverloadParams, EPI); | ||||||||
6275 | DeclContext *Parent = FDecl->getParent(); | ||||||||
6276 | FunctionDecl *OverloadDecl = FunctionDecl::Create( | ||||||||
6277 | Context, Parent, FDecl->getLocation(), FDecl->getLocation(), | ||||||||
6278 | FDecl->getIdentifier(), OverloadTy, | ||||||||
6279 | /*TInfo=*/nullptr, SC_Extern, Sema->getCurFPFeatures().isFPConstrained(), | ||||||||
6280 | false, | ||||||||
6281 | /*hasPrototype=*/true); | ||||||||
6282 | SmallVector<ParmVarDecl*, 16> Params; | ||||||||
6283 | FT = cast<FunctionProtoType>(OverloadTy); | ||||||||
6284 | for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { | ||||||||
6285 | QualType ParamType = FT->getParamType(i); | ||||||||
6286 | ParmVarDecl *Parm = | ||||||||
6287 | ParmVarDecl::Create(Context, OverloadDecl, SourceLocation(), | ||||||||
6288 | SourceLocation(), nullptr, ParamType, | ||||||||
6289 | /*TInfo=*/nullptr, SC_None, nullptr); | ||||||||
6290 | Parm->setScopeInfo(0, i); | ||||||||
6291 | Params.push_back(Parm); | ||||||||
6292 | } | ||||||||
6293 | OverloadDecl->setParams(Params); | ||||||||
6294 | Sema->mergeDeclAttributes(OverloadDecl, FDecl); | ||||||||
6295 | return OverloadDecl; | ||||||||
6296 | } | ||||||||
6297 | |||||||||
6298 | static void checkDirectCallValidity(Sema &S, const Expr *Fn, | ||||||||
6299 | FunctionDecl *Callee, | ||||||||
6300 | MultiExprArg ArgExprs) { | ||||||||
6301 | // `Callee` (when called with ArgExprs) may be ill-formed. enable_if (and | ||||||||
6302 | // similar attributes) really don't like it when functions are called with an | ||||||||
6303 | // invalid number of args. | ||||||||
6304 | if (S.TooManyArguments(Callee->getNumParams(), ArgExprs.size(), | ||||||||
6305 | /*PartialOverloading=*/false) && | ||||||||
6306 | !Callee->isVariadic()) | ||||||||
6307 | return; | ||||||||
6308 | if (Callee->getMinRequiredArguments() > ArgExprs.size()) | ||||||||
6309 | return; | ||||||||
6310 | |||||||||
6311 | if (const EnableIfAttr *Attr = | ||||||||
6312 | S.CheckEnableIf(Callee, Fn->getBeginLoc(), ArgExprs, true)) { | ||||||||
6313 | S.Diag(Fn->getBeginLoc(), | ||||||||
6314 | isa<CXXMethodDecl>(Callee) | ||||||||
6315 | ? diag::err_ovl_no_viable_member_function_in_call | ||||||||
6316 | : diag::err_ovl_no_viable_function_in_call) | ||||||||
6317 | << Callee << Callee->getSourceRange(); | ||||||||
6318 | S.Diag(Callee->getLocation(), | ||||||||
6319 | diag::note_ovl_candidate_disabled_by_function_cond_attr) | ||||||||
6320 | << Attr->getCond()->getSourceRange() << Attr->getMessage(); | ||||||||
6321 | return; | ||||||||
6322 | } | ||||||||
6323 | } | ||||||||
6324 | |||||||||
6325 | static bool enclosingClassIsRelatedToClassInWhichMembersWereFound( | ||||||||
6326 | const UnresolvedMemberExpr *const UME, Sema &S) { | ||||||||
6327 | |||||||||
6328 | const auto GetFunctionLevelDCIfCXXClass = | ||||||||
6329 | [](Sema &S) -> const CXXRecordDecl * { | ||||||||
6330 | const DeclContext *const DC = S.getFunctionLevelDeclContext(); | ||||||||
6331 | if (!DC || !DC->getParent()) | ||||||||
6332 | return nullptr; | ||||||||
6333 | |||||||||
6334 | // If the call to some member function was made from within a member | ||||||||
6335 | // function body 'M' return return 'M's parent. | ||||||||
6336 | if (const auto *MD = dyn_cast<CXXMethodDecl>(DC)) | ||||||||
6337 | return MD->getParent()->getCanonicalDecl(); | ||||||||
6338 | // else the call was made from within a default member initializer of a | ||||||||
6339 | // class, so return the class. | ||||||||
6340 | if (const auto *RD = dyn_cast<CXXRecordDecl>(DC)) | ||||||||
6341 | return RD->getCanonicalDecl(); | ||||||||
6342 | return nullptr; | ||||||||
6343 | }; | ||||||||
6344 | // If our DeclContext is neither a member function nor a class (in the | ||||||||
6345 | // case of a lambda in a default member initializer), we can't have an | ||||||||
6346 | // enclosing 'this'. | ||||||||
6347 | |||||||||
6348 | const CXXRecordDecl *const CurParentClass = GetFunctionLevelDCIfCXXClass(S); | ||||||||
6349 | if (!CurParentClass) | ||||||||
6350 | return false; | ||||||||
6351 | |||||||||
6352 | // The naming class for implicit member functions call is the class in which | ||||||||
6353 | // name lookup starts. | ||||||||
6354 | const CXXRecordDecl *const NamingClass = | ||||||||
6355 | UME->getNamingClass()->getCanonicalDecl(); | ||||||||
6356 | assert(NamingClass && "Must have naming class even for implicit access")(static_cast <bool> (NamingClass && "Must have naming class even for implicit access" ) ? void (0) : __assert_fail ("NamingClass && \"Must have naming class even for implicit access\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6356, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6357 | |||||||||
6358 | // If the unresolved member functions were found in a 'naming class' that is | ||||||||
6359 | // related (either the same or derived from) to the class that contains the | ||||||||
6360 | // member function that itself contained the implicit member access. | ||||||||
6361 | |||||||||
6362 | return CurParentClass == NamingClass || | ||||||||
6363 | CurParentClass->isDerivedFrom(NamingClass); | ||||||||
6364 | } | ||||||||
6365 | |||||||||
6366 | static void | ||||||||
6367 | tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( | ||||||||
6368 | Sema &S, const UnresolvedMemberExpr *const UME, SourceLocation CallLoc) { | ||||||||
6369 | |||||||||
6370 | if (!UME) | ||||||||
6371 | return; | ||||||||
6372 | |||||||||
6373 | LambdaScopeInfo *const CurLSI = S.getCurLambda(); | ||||||||
6374 | // Only try and implicitly capture 'this' within a C++ Lambda if it hasn't | ||||||||
6375 | // already been captured, or if this is an implicit member function call (if | ||||||||
6376 | // it isn't, an attempt to capture 'this' should already have been made). | ||||||||
6377 | if (!CurLSI || CurLSI->ImpCaptureStyle == CurLSI->ImpCap_None || | ||||||||
6378 | !UME->isImplicitAccess() || CurLSI->isCXXThisCaptured()) | ||||||||
6379 | return; | ||||||||
6380 | |||||||||
6381 | // Check if the naming class in which the unresolved members were found is | ||||||||
6382 | // related (same as or is a base of) to the enclosing class. | ||||||||
6383 | |||||||||
6384 | if (!enclosingClassIsRelatedToClassInWhichMembersWereFound(UME, S)) | ||||||||
6385 | return; | ||||||||
6386 | |||||||||
6387 | |||||||||
6388 | DeclContext *EnclosingFunctionCtx = S.CurContext->getParent()->getParent(); | ||||||||
6389 | // If the enclosing function is not dependent, then this lambda is | ||||||||
6390 | // capture ready, so if we can capture this, do so. | ||||||||
6391 | if (!EnclosingFunctionCtx->isDependentContext()) { | ||||||||
6392 | // If the current lambda and all enclosing lambdas can capture 'this' - | ||||||||
6393 | // then go ahead and capture 'this' (since our unresolved overload set | ||||||||
6394 | // contains at least one non-static member function). | ||||||||
6395 | if (!S.CheckCXXThisCapture(CallLoc, /*Explcit*/ false, /*Diagnose*/ false)) | ||||||||
6396 | S.CheckCXXThisCapture(CallLoc); | ||||||||
6397 | } else if (S.CurContext->isDependentContext()) { | ||||||||
6398 | // ... since this is an implicit member reference, that might potentially | ||||||||
6399 | // involve a 'this' capture, mark 'this' for potential capture in | ||||||||
6400 | // enclosing lambdas. | ||||||||
6401 | if (CurLSI->ImpCaptureStyle != CurLSI->ImpCap_None) | ||||||||
6402 | CurLSI->addPotentialThisCapture(CallLoc); | ||||||||
6403 | } | ||||||||
6404 | } | ||||||||
6405 | |||||||||
6406 | ExprResult Sema::ActOnCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, | ||||||||
6407 | MultiExprArg ArgExprs, SourceLocation RParenLoc, | ||||||||
6408 | Expr *ExecConfig) { | ||||||||
6409 | ExprResult Call = | ||||||||
6410 | BuildCallExpr(Scope, Fn, LParenLoc, ArgExprs, RParenLoc, ExecConfig, | ||||||||
6411 | /*IsExecConfig=*/false, /*AllowRecovery=*/true); | ||||||||
6412 | if (Call.isInvalid()) | ||||||||
6413 | return Call; | ||||||||
6414 | |||||||||
6415 | // Diagnose uses of the C++20 "ADL-only template-id call" feature in earlier | ||||||||
6416 | // language modes. | ||||||||
6417 | if (auto *ULE = dyn_cast<UnresolvedLookupExpr>(Fn)) { | ||||||||
6418 | if (ULE->hasExplicitTemplateArgs() && | ||||||||
6419 | ULE->decls_begin() == ULE->decls_end()) { | ||||||||
6420 | Diag(Fn->getExprLoc(), getLangOpts().CPlusPlus20 | ||||||||
6421 | ? diag::warn_cxx17_compat_adl_only_template_id | ||||||||
6422 | : diag::ext_adl_only_template_id) | ||||||||
6423 | << ULE->getName(); | ||||||||
6424 | } | ||||||||
6425 | } | ||||||||
6426 | |||||||||
6427 | if (LangOpts.OpenMP) | ||||||||
6428 | Call = ActOnOpenMPCall(Call, Scope, LParenLoc, ArgExprs, RParenLoc, | ||||||||
6429 | ExecConfig); | ||||||||
6430 | |||||||||
6431 | return Call; | ||||||||
6432 | } | ||||||||
6433 | |||||||||
6434 | /// BuildCallExpr - Handle a call to Fn with the specified array of arguments. | ||||||||
6435 | /// This provides the location of the left/right parens and a list of comma | ||||||||
6436 | /// locations. | ||||||||
6437 | ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, | ||||||||
6438 | MultiExprArg ArgExprs, SourceLocation RParenLoc, | ||||||||
6439 | Expr *ExecConfig, bool IsExecConfig, | ||||||||
6440 | bool AllowRecovery) { | ||||||||
6441 | // Since this might be a postfix expression, get rid of ParenListExprs. | ||||||||
6442 | ExprResult Result = MaybeConvertParenListExprToParenExpr(Scope, Fn); | ||||||||
6443 | if (Result.isInvalid()) return ExprError(); | ||||||||
6444 | Fn = Result.get(); | ||||||||
6445 | |||||||||
6446 | if (checkArgsForPlaceholders(*this, ArgExprs)) | ||||||||
6447 | return ExprError(); | ||||||||
6448 | |||||||||
6449 | if (getLangOpts().CPlusPlus) { | ||||||||
6450 | // If this is a pseudo-destructor expression, build the call immediately. | ||||||||
6451 | if (isa<CXXPseudoDestructorExpr>(Fn)) { | ||||||||
6452 | if (!ArgExprs.empty()) { | ||||||||
6453 | // Pseudo-destructor calls should not have any arguments. | ||||||||
6454 | Diag(Fn->getBeginLoc(), diag::err_pseudo_dtor_call_with_args) | ||||||||
6455 | << FixItHint::CreateRemoval( | ||||||||
6456 | SourceRange(ArgExprs.front()->getBeginLoc(), | ||||||||
6457 | ArgExprs.back()->getEndLoc())); | ||||||||
6458 | } | ||||||||
6459 | |||||||||
6460 | return CallExpr::Create(Context, Fn, /*Args=*/{}, Context.VoidTy, | ||||||||
6461 | VK_PRValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
6462 | } | ||||||||
6463 | if (Fn->getType() == Context.PseudoObjectTy) { | ||||||||
6464 | ExprResult result = CheckPlaceholderExpr(Fn); | ||||||||
6465 | if (result.isInvalid()) return ExprError(); | ||||||||
6466 | Fn = result.get(); | ||||||||
6467 | } | ||||||||
6468 | |||||||||
6469 | // Determine whether this is a dependent call inside a C++ template, | ||||||||
6470 | // in which case we won't do any semantic analysis now. | ||||||||
6471 | if (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs)) { | ||||||||
6472 | if (ExecConfig) { | ||||||||
6473 | return CUDAKernelCallExpr::Create(Context, Fn, | ||||||||
6474 | cast<CallExpr>(ExecConfig), ArgExprs, | ||||||||
6475 | Context.DependentTy, VK_PRValue, | ||||||||
6476 | RParenLoc, CurFPFeatureOverrides()); | ||||||||
6477 | } else { | ||||||||
6478 | |||||||||
6479 | tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( | ||||||||
6480 | *this, dyn_cast<UnresolvedMemberExpr>(Fn->IgnoreParens()), | ||||||||
6481 | Fn->getBeginLoc()); | ||||||||
6482 | |||||||||
6483 | return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, | ||||||||
6484 | VK_PRValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
6485 | } | ||||||||
6486 | } | ||||||||
6487 | |||||||||
6488 | // Determine whether this is a call to an object (C++ [over.call.object]). | ||||||||
6489 | if (Fn->getType()->isRecordType()) | ||||||||
6490 | return BuildCallToObjectOfClassType(Scope, Fn, LParenLoc, ArgExprs, | ||||||||
6491 | RParenLoc); | ||||||||
6492 | |||||||||
6493 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||||||
6494 | ExprResult result = rebuildUnknownAnyFunction(*this, Fn); | ||||||||
6495 | if (result.isInvalid()) return ExprError(); | ||||||||
6496 | Fn = result.get(); | ||||||||
6497 | } | ||||||||
6498 | |||||||||
6499 | if (Fn->getType() == Context.BoundMemberTy) { | ||||||||
6500 | return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, | ||||||||
6501 | RParenLoc, AllowRecovery); | ||||||||
6502 | } | ||||||||
6503 | } | ||||||||
6504 | |||||||||
6505 | // Check for overloaded calls. This can happen even in C due to extensions. | ||||||||
6506 | if (Fn->getType() == Context.OverloadTy) { | ||||||||
6507 | OverloadExpr::FindResult find = OverloadExpr::find(Fn); | ||||||||
6508 | |||||||||
6509 | // We aren't supposed to apply this logic if there's an '&' involved. | ||||||||
6510 | if (!find.HasFormOfMemberPointer) { | ||||||||
6511 | if (Expr::hasAnyTypeDependentArguments(ArgExprs)) | ||||||||
6512 | return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, | ||||||||
6513 | VK_PRValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
6514 | OverloadExpr *ovl = find.Expression; | ||||||||
6515 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(ovl)) | ||||||||
6516 | return BuildOverloadedCallExpr( | ||||||||
6517 | Scope, Fn, ULE, LParenLoc, ArgExprs, RParenLoc, ExecConfig, | ||||||||
6518 | /*AllowTypoCorrection=*/true, find.IsAddressOfOperand); | ||||||||
6519 | return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, | ||||||||
6520 | RParenLoc, AllowRecovery); | ||||||||
6521 | } | ||||||||
6522 | } | ||||||||
6523 | |||||||||
6524 | // If we're directly calling a function, get the appropriate declaration. | ||||||||
6525 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||||||
6526 | ExprResult result = rebuildUnknownAnyFunction(*this, Fn); | ||||||||
6527 | if (result.isInvalid()) return ExprError(); | ||||||||
6528 | Fn = result.get(); | ||||||||
6529 | } | ||||||||
6530 | |||||||||
6531 | Expr *NakedFn = Fn->IgnoreParens(); | ||||||||
6532 | |||||||||
6533 | bool CallingNDeclIndirectly = false; | ||||||||
6534 | NamedDecl *NDecl = nullptr; | ||||||||
6535 | if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(NakedFn)) { | ||||||||
6536 | if (UnOp->getOpcode() == UO_AddrOf) { | ||||||||
6537 | CallingNDeclIndirectly = true; | ||||||||
6538 | NakedFn = UnOp->getSubExpr()->IgnoreParens(); | ||||||||
6539 | } | ||||||||
6540 | } | ||||||||
6541 | |||||||||
6542 | if (auto *DRE = dyn_cast<DeclRefExpr>(NakedFn)) { | ||||||||
6543 | NDecl = DRE->getDecl(); | ||||||||
6544 | |||||||||
6545 | FunctionDecl *FDecl = dyn_cast<FunctionDecl>(NDecl); | ||||||||
6546 | if (FDecl && FDecl->getBuiltinID()) { | ||||||||
6547 | // Rewrite the function decl for this builtin by replacing parameters | ||||||||
6548 | // with no explicit address space with the address space of the arguments | ||||||||
6549 | // in ArgExprs. | ||||||||
6550 | if ((FDecl = | ||||||||
6551 | rewriteBuiltinFunctionDecl(this, Context, FDecl, ArgExprs))) { | ||||||||
6552 | NDecl = FDecl; | ||||||||
6553 | Fn = DeclRefExpr::Create( | ||||||||
6554 | Context, FDecl->getQualifierLoc(), SourceLocation(), FDecl, false, | ||||||||
6555 | SourceLocation(), FDecl->getType(), Fn->getValueKind(), FDecl, | ||||||||
6556 | nullptr, DRE->isNonOdrUse()); | ||||||||
6557 | } | ||||||||
6558 | } | ||||||||
6559 | } else if (isa<MemberExpr>(NakedFn)) | ||||||||
6560 | NDecl = cast<MemberExpr>(NakedFn)->getMemberDecl(); | ||||||||
6561 | |||||||||
6562 | if (FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(NDecl)) { | ||||||||
6563 | if (CallingNDeclIndirectly && !checkAddressOfFunctionIsAvailable( | ||||||||
6564 | FD, /*Complain=*/true, Fn->getBeginLoc())) | ||||||||
6565 | return ExprError(); | ||||||||
6566 | |||||||||
6567 | checkDirectCallValidity(*this, Fn, FD, ArgExprs); | ||||||||
6568 | |||||||||
6569 | // If this expression is a call to a builtin function in HIP device | ||||||||
6570 | // compilation, allow a pointer-type argument to default address space to be | ||||||||
6571 | // passed as a pointer-type parameter to a non-default address space. | ||||||||
6572 | // If Arg is declared in the default address space and Param is declared | ||||||||
6573 | // in a non-default address space, perform an implicit address space cast to | ||||||||
6574 | // the parameter type. | ||||||||
6575 | if (getLangOpts().HIP && getLangOpts().CUDAIsDevice && FD && | ||||||||
6576 | FD->getBuiltinID()) { | ||||||||
6577 | for (unsigned Idx = 0; Idx < FD->param_size(); ++Idx) { | ||||||||
6578 | ParmVarDecl *Param = FD->getParamDecl(Idx); | ||||||||
6579 | if (!ArgExprs[Idx] || !Param || !Param->getType()->isPointerType() || | ||||||||
6580 | !ArgExprs[Idx]->getType()->isPointerType()) | ||||||||
6581 | continue; | ||||||||
6582 | |||||||||
6583 | auto ParamAS = Param->getType()->getPointeeType().getAddressSpace(); | ||||||||
6584 | auto ArgTy = ArgExprs[Idx]->getType(); | ||||||||
6585 | auto ArgPtTy = ArgTy->getPointeeType(); | ||||||||
6586 | auto ArgAS = ArgPtTy.getAddressSpace(); | ||||||||
6587 | |||||||||
6588 | // Only allow implicit casting from a non-default address space pointee | ||||||||
6589 | // type to a default address space pointee type | ||||||||
6590 | if (ArgAS != LangAS::Default || ParamAS == LangAS::Default) | ||||||||
6591 | continue; | ||||||||
6592 | |||||||||
6593 | // First, ensure that the Arg is an RValue. | ||||||||
6594 | if (ArgExprs[Idx]->isGLValue()) { | ||||||||
6595 | ArgExprs[Idx] = ImplicitCastExpr::Create( | ||||||||
6596 | Context, ArgExprs[Idx]->getType(), CK_NoOp, ArgExprs[Idx], | ||||||||
6597 | nullptr, VK_PRValue, FPOptionsOverride()); | ||||||||
6598 | } | ||||||||
6599 | |||||||||
6600 | // Construct a new arg type with address space of Param | ||||||||
6601 | Qualifiers ArgPtQuals = ArgPtTy.getQualifiers(); | ||||||||
6602 | ArgPtQuals.setAddressSpace(ParamAS); | ||||||||
6603 | auto NewArgPtTy = | ||||||||
6604 | Context.getQualifiedType(ArgPtTy.getUnqualifiedType(), ArgPtQuals); | ||||||||
6605 | auto NewArgTy = | ||||||||
6606 | Context.getQualifiedType(Context.getPointerType(NewArgPtTy), | ||||||||
6607 | ArgTy.getQualifiers()); | ||||||||
6608 | |||||||||
6609 | // Finally perform an implicit address space cast | ||||||||
6610 | ArgExprs[Idx] = ImpCastExprToType(ArgExprs[Idx], NewArgTy, | ||||||||
6611 | CK_AddressSpaceConversion) | ||||||||
6612 | .get(); | ||||||||
6613 | } | ||||||||
6614 | } | ||||||||
6615 | } | ||||||||
6616 | |||||||||
6617 | if (Context.isDependenceAllowed() && | ||||||||
6618 | (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs))) { | ||||||||
6619 | assert(!getLangOpts().CPlusPlus)(static_cast <bool> (!getLangOpts().CPlusPlus) ? void ( 0) : __assert_fail ("!getLangOpts().CPlusPlus", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6619, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6620 | assert((Fn->containsErrors() ||(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6623, __extension__ __PRETTY_FUNCTION__)) | ||||||||
6621 | llvm::any_of(ArgExprs,(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6623, __extension__ __PRETTY_FUNCTION__)) | ||||||||
6622 | [](clang::Expr *E) { return E->containsErrors(); })) &&(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6623, __extension__ __PRETTY_FUNCTION__)) | ||||||||
6623 | "should only occur in error-recovery path.")(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6623, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6624 | QualType ReturnType = | ||||||||
6625 | llvm::isa_and_nonnull<FunctionDecl>(NDecl) | ||||||||
6626 | ? cast<FunctionDecl>(NDecl)->getCallResultType() | ||||||||
6627 | : Context.DependentTy; | ||||||||
6628 | return CallExpr::Create(Context, Fn, ArgExprs, ReturnType, | ||||||||
6629 | Expr::getValueKindForType(ReturnType), RParenLoc, | ||||||||
6630 | CurFPFeatureOverrides()); | ||||||||
6631 | } | ||||||||
6632 | return BuildResolvedCallExpr(Fn, NDecl, LParenLoc, ArgExprs, RParenLoc, | ||||||||
6633 | ExecConfig, IsExecConfig); | ||||||||
6634 | } | ||||||||
6635 | |||||||||
6636 | /// BuildBuiltinCallExpr - Create a call to a builtin function specified by Id | ||||||||
6637 | // with the specified CallArgs | ||||||||
6638 | Expr *Sema::BuildBuiltinCallExpr(SourceLocation Loc, Builtin::ID Id, | ||||||||
6639 | MultiExprArg CallArgs) { | ||||||||
6640 | StringRef Name = Context.BuiltinInfo.getName(Id); | ||||||||
6641 | LookupResult R(*this, &Context.Idents.get(Name), Loc, | ||||||||
6642 | Sema::LookupOrdinaryName); | ||||||||
6643 | LookupName(R, TUScope, /*AllowBuiltinCreation=*/true); | ||||||||
6644 | |||||||||
6645 | auto *BuiltInDecl = R.getAsSingle<FunctionDecl>(); | ||||||||
6646 | assert(BuiltInDecl && "failed to find builtin declaration")(static_cast <bool> (BuiltInDecl && "failed to find builtin declaration" ) ? void (0) : __assert_fail ("BuiltInDecl && \"failed to find builtin declaration\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6646, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6647 | |||||||||
6648 | ExprResult DeclRef = | ||||||||
6649 | BuildDeclRefExpr(BuiltInDecl, BuiltInDecl->getType(), VK_LValue, Loc); | ||||||||
6650 | assert(DeclRef.isUsable() && "Builtin reference cannot fail")(static_cast <bool> (DeclRef.isUsable() && "Builtin reference cannot fail" ) ? void (0) : __assert_fail ("DeclRef.isUsable() && \"Builtin reference cannot fail\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6650, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6651 | |||||||||
6652 | ExprResult Call = | ||||||||
6653 | BuildCallExpr(/*Scope=*/nullptr, DeclRef.get(), Loc, CallArgs, Loc); | ||||||||
6654 | |||||||||
6655 | assert(!Call.isInvalid() && "Call to builtin cannot fail!")(static_cast <bool> (!Call.isInvalid() && "Call to builtin cannot fail!" ) ? void (0) : __assert_fail ("!Call.isInvalid() && \"Call to builtin cannot fail!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6655, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6656 | return Call.get(); | ||||||||
6657 | } | ||||||||
6658 | |||||||||
6659 | /// Parse a __builtin_astype expression. | ||||||||
6660 | /// | ||||||||
6661 | /// __builtin_astype( value, dst type ) | ||||||||
6662 | /// | ||||||||
6663 | ExprResult Sema::ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, | ||||||||
6664 | SourceLocation BuiltinLoc, | ||||||||
6665 | SourceLocation RParenLoc) { | ||||||||
6666 | QualType DstTy = GetTypeFromParser(ParsedDestTy); | ||||||||
6667 | return BuildAsTypeExpr(E, DstTy, BuiltinLoc, RParenLoc); | ||||||||
6668 | } | ||||||||
6669 | |||||||||
6670 | /// Create a new AsTypeExpr node (bitcast) from the arguments. | ||||||||
6671 | ExprResult Sema::BuildAsTypeExpr(Expr *E, QualType DestTy, | ||||||||
6672 | SourceLocation BuiltinLoc, | ||||||||
6673 | SourceLocation RParenLoc) { | ||||||||
6674 | ExprValueKind VK = VK_PRValue; | ||||||||
6675 | ExprObjectKind OK = OK_Ordinary; | ||||||||
6676 | QualType SrcTy = E->getType(); | ||||||||
6677 | if (!SrcTy->isDependentType() && | ||||||||
6678 | Context.getTypeSize(DestTy) != Context.getTypeSize(SrcTy)) | ||||||||
6679 | return ExprError( | ||||||||
6680 | Diag(BuiltinLoc, diag::err_invalid_astype_of_different_size) | ||||||||
6681 | << DestTy << SrcTy << E->getSourceRange()); | ||||||||
6682 | return new (Context) AsTypeExpr(E, DestTy, VK, OK, BuiltinLoc, RParenLoc); | ||||||||
6683 | } | ||||||||
6684 | |||||||||
6685 | /// ActOnConvertVectorExpr - create a new convert-vector expression from the | ||||||||
6686 | /// provided arguments. | ||||||||
6687 | /// | ||||||||
6688 | /// __builtin_convertvector( value, dst type ) | ||||||||
6689 | /// | ||||||||
6690 | ExprResult Sema::ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, | ||||||||
6691 | SourceLocation BuiltinLoc, | ||||||||
6692 | SourceLocation RParenLoc) { | ||||||||
6693 | TypeSourceInfo *TInfo; | ||||||||
6694 | GetTypeFromParser(ParsedDestTy, &TInfo); | ||||||||
6695 | return SemaConvertVectorExpr(E, TInfo, BuiltinLoc, RParenLoc); | ||||||||
6696 | } | ||||||||
6697 | |||||||||
6698 | /// BuildResolvedCallExpr - Build a call to a resolved expression, | ||||||||
6699 | /// i.e. an expression not of \p OverloadTy. The expression should | ||||||||
6700 | /// unary-convert to an expression of function-pointer or | ||||||||
6701 | /// block-pointer type. | ||||||||
6702 | /// | ||||||||
6703 | /// \param NDecl the declaration being called, if available | ||||||||
6704 | ExprResult Sema::BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, | ||||||||
6705 | SourceLocation LParenLoc, | ||||||||
6706 | ArrayRef<Expr *> Args, | ||||||||
6707 | SourceLocation RParenLoc, Expr *Config, | ||||||||
6708 | bool IsExecConfig, ADLCallKind UsesADL) { | ||||||||
6709 | FunctionDecl *FDecl = dyn_cast_or_null<FunctionDecl>(NDecl); | ||||||||
6710 | unsigned BuiltinID = (FDecl ? FDecl->getBuiltinID() : 0); | ||||||||
6711 | |||||||||
6712 | // Functions with 'interrupt' attribute cannot be called directly. | ||||||||
6713 | if (FDecl && FDecl->hasAttr<AnyX86InterruptAttr>()) { | ||||||||
6714 | Diag(Fn->getExprLoc(), diag::err_anyx86_interrupt_called); | ||||||||
6715 | return ExprError(); | ||||||||
6716 | } | ||||||||
6717 | |||||||||
6718 | // Interrupt handlers don't save off the VFP regs automatically on ARM, | ||||||||
6719 | // so there's some risk when calling out to non-interrupt handler functions | ||||||||
6720 | // that the callee might not preserve them. This is easy to diagnose here, | ||||||||
6721 | // but can be very challenging to debug. | ||||||||
6722 | // Likewise, X86 interrupt handlers may only call routines with attribute | ||||||||
6723 | // no_caller_saved_registers since there is no efficient way to | ||||||||
6724 | // save and restore the non-GPR state. | ||||||||
6725 | if (auto *Caller = getCurFunctionDecl()) { | ||||||||
6726 | if (Caller->hasAttr<ARMInterruptAttr>()) { | ||||||||
6727 | bool VFP = Context.getTargetInfo().hasFeature("vfp"); | ||||||||
6728 | if (VFP && (!FDecl || !FDecl->hasAttr<ARMInterruptAttr>())) { | ||||||||
6729 | Diag(Fn->getExprLoc(), diag::warn_arm_interrupt_calling_convention); | ||||||||
6730 | if (FDecl) | ||||||||
6731 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||||||
6732 | } | ||||||||
6733 | } | ||||||||
6734 | if (Caller->hasAttr<AnyX86InterruptAttr>() && | ||||||||
6735 | ((!FDecl || !FDecl->hasAttr<AnyX86NoCallerSavedRegistersAttr>()))) { | ||||||||
6736 | Diag(Fn->getExprLoc(), diag::warn_anyx86_interrupt_regsave); | ||||||||
6737 | if (FDecl) | ||||||||
6738 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||||||
6739 | } | ||||||||
6740 | } | ||||||||
6741 | |||||||||
6742 | // Promote the function operand. | ||||||||
6743 | // We special-case function promotion here because we only allow promoting | ||||||||
6744 | // builtin functions to function pointers in the callee of a call. | ||||||||
6745 | ExprResult Result; | ||||||||
6746 | QualType ResultTy; | ||||||||
6747 | if (BuiltinID && | ||||||||
6748 | Fn->getType()->isSpecificBuiltinType(BuiltinType::BuiltinFn)) { | ||||||||
6749 | // Extract the return type from the (builtin) function pointer type. | ||||||||
6750 | // FIXME Several builtins still have setType in | ||||||||
6751 | // Sema::CheckBuiltinFunctionCall. One should review their definitions in | ||||||||
6752 | // Builtins.def to ensure they are correct before removing setType calls. | ||||||||
6753 | QualType FnPtrTy = Context.getPointerType(FDecl->getType()); | ||||||||
6754 | Result = ImpCastExprToType(Fn, FnPtrTy, CK_BuiltinFnToFnPtr).get(); | ||||||||
6755 | ResultTy = FDecl->getCallResultType(); | ||||||||
6756 | } else { | ||||||||
6757 | Result = CallExprUnaryConversions(Fn); | ||||||||
6758 | ResultTy = Context.BoolTy; | ||||||||
6759 | } | ||||||||
6760 | if (Result.isInvalid()) | ||||||||
6761 | return ExprError(); | ||||||||
6762 | Fn = Result.get(); | ||||||||
6763 | |||||||||
6764 | // Check for a valid function type, but only if it is not a builtin which | ||||||||
6765 | // requires custom type checking. These will be handled by | ||||||||
6766 | // CheckBuiltinFunctionCall below just after creation of the call expression. | ||||||||
6767 | const FunctionType *FuncT = nullptr; | ||||||||
6768 | if (!BuiltinID || !Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) { | ||||||||
6769 | retry: | ||||||||
6770 | if (const PointerType *PT = Fn->getType()->getAs<PointerType>()) { | ||||||||
6771 | // C99 6.5.2.2p1 - "The expression that denotes the called function shall | ||||||||
6772 | // have type pointer to function". | ||||||||
6773 | FuncT = PT->getPointeeType()->getAs<FunctionType>(); | ||||||||
6774 | if (!FuncT) | ||||||||
6775 | return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) | ||||||||
6776 | << Fn->getType() << Fn->getSourceRange()); | ||||||||
6777 | } else if (const BlockPointerType *BPT = | ||||||||
6778 | Fn->getType()->getAs<BlockPointerType>()) { | ||||||||
6779 | FuncT = BPT->getPointeeType()->castAs<FunctionType>(); | ||||||||
6780 | } else { | ||||||||
6781 | // Handle calls to expressions of unknown-any type. | ||||||||
6782 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||||||
6783 | ExprResult rewrite = rebuildUnknownAnyFunction(*this, Fn); | ||||||||
6784 | if (rewrite.isInvalid()) | ||||||||
6785 | return ExprError(); | ||||||||
6786 | Fn = rewrite.get(); | ||||||||
6787 | goto retry; | ||||||||
6788 | } | ||||||||
6789 | |||||||||
6790 | return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) | ||||||||
6791 | << Fn->getType() << Fn->getSourceRange()); | ||||||||
6792 | } | ||||||||
6793 | } | ||||||||
6794 | |||||||||
6795 | // Get the number of parameters in the function prototype, if any. | ||||||||
6796 | // We will allocate space for max(Args.size(), NumParams) arguments | ||||||||
6797 | // in the call expression. | ||||||||
6798 | const auto *Proto = dyn_cast_or_null<FunctionProtoType>(FuncT); | ||||||||
6799 | unsigned NumParams = Proto ? Proto->getNumParams() : 0; | ||||||||
6800 | |||||||||
6801 | CallExpr *TheCall; | ||||||||
6802 | if (Config) { | ||||||||
6803 | assert(UsesADL == ADLCallKind::NotADL &&(static_cast <bool> (UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL") ? void (0) : __assert_fail ("UsesADL == ADLCallKind::NotADL && \"CUDAKernelCallExpr should not use ADL\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6804, __extension__ __PRETTY_FUNCTION__)) | ||||||||
6804 | "CUDAKernelCallExpr should not use ADL")(static_cast <bool> (UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL") ? void (0) : __assert_fail ("UsesADL == ADLCallKind::NotADL && \"CUDAKernelCallExpr should not use ADL\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6804, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6805 | TheCall = CUDAKernelCallExpr::Create(Context, Fn, cast<CallExpr>(Config), | ||||||||
6806 | Args, ResultTy, VK_PRValue, RParenLoc, | ||||||||
6807 | CurFPFeatureOverrides(), NumParams); | ||||||||
6808 | } else { | ||||||||
6809 | TheCall = | ||||||||
6810 | CallExpr::Create(Context, Fn, Args, ResultTy, VK_PRValue, RParenLoc, | ||||||||
6811 | CurFPFeatureOverrides(), NumParams, UsesADL); | ||||||||
6812 | } | ||||||||
6813 | |||||||||
6814 | if (!Context.isDependenceAllowed()) { | ||||||||
6815 | // Forget about the nulled arguments since typo correction | ||||||||
6816 | // do not handle them well. | ||||||||
6817 | TheCall->shrinkNumArgs(Args.size()); | ||||||||
6818 | // C cannot always handle TypoExpr nodes in builtin calls and direct | ||||||||
6819 | // function calls as their argument checking don't necessarily handle | ||||||||
6820 | // dependent types properly, so make sure any TypoExprs have been | ||||||||
6821 | // dealt with. | ||||||||
6822 | ExprResult Result = CorrectDelayedTyposInExpr(TheCall); | ||||||||
6823 | if (!Result.isUsable()) return ExprError(); | ||||||||
6824 | CallExpr *TheOldCall = TheCall; | ||||||||
6825 | TheCall = dyn_cast<CallExpr>(Result.get()); | ||||||||
6826 | bool CorrectedTypos = TheCall != TheOldCall; | ||||||||
6827 | if (!TheCall) return Result; | ||||||||
6828 | Args = llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()); | ||||||||
6829 | |||||||||
6830 | // A new call expression node was created if some typos were corrected. | ||||||||
6831 | // However it may not have been constructed with enough storage. In this | ||||||||
6832 | // case, rebuild the node with enough storage. The waste of space is | ||||||||
6833 | // immaterial since this only happens when some typos were corrected. | ||||||||
6834 | if (CorrectedTypos && Args.size() < NumParams) { | ||||||||
6835 | if (Config) | ||||||||
6836 | TheCall = CUDAKernelCallExpr::Create( | ||||||||
6837 | Context, Fn, cast<CallExpr>(Config), Args, ResultTy, VK_PRValue, | ||||||||
6838 | RParenLoc, CurFPFeatureOverrides(), NumParams); | ||||||||
6839 | else | ||||||||
6840 | TheCall = | ||||||||
6841 | CallExpr::Create(Context, Fn, Args, ResultTy, VK_PRValue, RParenLoc, | ||||||||
6842 | CurFPFeatureOverrides(), NumParams, UsesADL); | ||||||||
6843 | } | ||||||||
6844 | // We can now handle the nulled arguments for the default arguments. | ||||||||
6845 | TheCall->setNumArgsUnsafe(std::max<unsigned>(Args.size(), NumParams)); | ||||||||
6846 | } | ||||||||
6847 | |||||||||
6848 | // Bail out early if calling a builtin with custom type checking. | ||||||||
6849 | if (BuiltinID && Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) | ||||||||
6850 | return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); | ||||||||
6851 | |||||||||
6852 | if (getLangOpts().CUDA) { | ||||||||
6853 | if (Config) { | ||||||||
6854 | // CUDA: Kernel calls must be to global functions | ||||||||
6855 | if (FDecl && !FDecl->hasAttr<CUDAGlobalAttr>()) | ||||||||
6856 | return ExprError(Diag(LParenLoc,diag::err_kern_call_not_global_function) | ||||||||
6857 | << FDecl << Fn->getSourceRange()); | ||||||||
6858 | |||||||||
6859 | // CUDA: Kernel function must have 'void' return type | ||||||||
6860 | if (!FuncT->getReturnType()->isVoidType() && | ||||||||
6861 | !FuncT->getReturnType()->getAs<AutoType>() && | ||||||||
6862 | !FuncT->getReturnType()->isInstantiationDependentType()) | ||||||||
6863 | return ExprError(Diag(LParenLoc, diag::err_kern_type_not_void_return) | ||||||||
6864 | << Fn->getType() << Fn->getSourceRange()); | ||||||||
6865 | } else { | ||||||||
6866 | // CUDA: Calls to global functions must be configured | ||||||||
6867 | if (FDecl && FDecl->hasAttr<CUDAGlobalAttr>()) | ||||||||
6868 | return ExprError(Diag(LParenLoc, diag::err_global_call_not_config) | ||||||||
6869 | << FDecl << Fn->getSourceRange()); | ||||||||
6870 | } | ||||||||
6871 | } | ||||||||
6872 | |||||||||
6873 | // Check for a valid return type | ||||||||
6874 | if (CheckCallReturnType(FuncT->getReturnType(), Fn->getBeginLoc(), TheCall, | ||||||||
6875 | FDecl)) | ||||||||
6876 | return ExprError(); | ||||||||
6877 | |||||||||
6878 | // We know the result type of the call, set it. | ||||||||
6879 | TheCall->setType(FuncT->getCallResultType(Context)); | ||||||||
6880 | TheCall->setValueKind(Expr::getValueKindForType(FuncT->getReturnType())); | ||||||||
6881 | |||||||||
6882 | if (Proto) { | ||||||||
6883 | if (ConvertArgumentsForCall(TheCall, Fn, FDecl, Proto, Args, RParenLoc, | ||||||||
6884 | IsExecConfig)) | ||||||||
6885 | return ExprError(); | ||||||||
6886 | } else { | ||||||||
6887 | assert(isa<FunctionNoProtoType>(FuncT) && "Unknown FunctionType!")(static_cast <bool> (isa<FunctionNoProtoType>(FuncT ) && "Unknown FunctionType!") ? void (0) : __assert_fail ("isa<FunctionNoProtoType>(FuncT) && \"Unknown FunctionType!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6887, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6888 | |||||||||
6889 | if (FDecl) { | ||||||||
6890 | // Check if we have too few/too many template arguments, based | ||||||||
6891 | // on our knowledge of the function definition. | ||||||||
6892 | const FunctionDecl *Def = nullptr; | ||||||||
6893 | if (FDecl->hasBody(Def) && Args.size() != Def->param_size()) { | ||||||||
6894 | Proto = Def->getType()->getAs<FunctionProtoType>(); | ||||||||
6895 | if (!Proto || !(Proto->isVariadic() && Args.size() >= Def->param_size())) | ||||||||
6896 | Diag(RParenLoc, diag::warn_call_wrong_number_of_arguments) | ||||||||
6897 | << (Args.size() > Def->param_size()) << FDecl << Fn->getSourceRange(); | ||||||||
6898 | } | ||||||||
6899 | |||||||||
6900 | // If the function we're calling isn't a function prototype, but we have | ||||||||
6901 | // a function prototype from a prior declaratiom, use that prototype. | ||||||||
6902 | if (!FDecl->hasPrototype()) | ||||||||
6903 | Proto = FDecl->getType()->getAs<FunctionProtoType>(); | ||||||||
6904 | } | ||||||||
6905 | |||||||||
6906 | // Promote the arguments (C99 6.5.2.2p6). | ||||||||
6907 | for (unsigned i = 0, e = Args.size(); i != e; i++) { | ||||||||
6908 | Expr *Arg = Args[i]; | ||||||||
6909 | |||||||||
6910 | if (Proto && i < Proto->getNumParams()) { | ||||||||
6911 | InitializedEntity Entity = InitializedEntity::InitializeParameter( | ||||||||
6912 | Context, Proto->getParamType(i), Proto->isParamConsumed(i)); | ||||||||
6913 | ExprResult ArgE = | ||||||||
6914 | PerformCopyInitialization(Entity, SourceLocation(), Arg); | ||||||||
6915 | if (ArgE.isInvalid()) | ||||||||
6916 | return true; | ||||||||
6917 | |||||||||
6918 | Arg = ArgE.getAs<Expr>(); | ||||||||
6919 | |||||||||
6920 | } else { | ||||||||
6921 | ExprResult ArgE = DefaultArgumentPromotion(Arg); | ||||||||
6922 | |||||||||
6923 | if (ArgE.isInvalid()) | ||||||||
6924 | return true; | ||||||||
6925 | |||||||||
6926 | Arg = ArgE.getAs<Expr>(); | ||||||||
6927 | } | ||||||||
6928 | |||||||||
6929 | if (RequireCompleteType(Arg->getBeginLoc(), Arg->getType(), | ||||||||
6930 | diag::err_call_incomplete_argument, Arg)) | ||||||||
6931 | return ExprError(); | ||||||||
6932 | |||||||||
6933 | TheCall->setArg(i, Arg); | ||||||||
6934 | } | ||||||||
6935 | TheCall->computeDependence(); | ||||||||
6936 | } | ||||||||
6937 | |||||||||
6938 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl)) | ||||||||
6939 | if (!Method->isStatic()) | ||||||||
6940 | return ExprError(Diag(LParenLoc, diag::err_member_call_without_object) | ||||||||
6941 | << Fn->getSourceRange()); | ||||||||
6942 | |||||||||
6943 | // Check for sentinels | ||||||||
6944 | if (NDecl) | ||||||||
6945 | DiagnoseSentinelCalls(NDecl, LParenLoc, Args); | ||||||||
6946 | |||||||||
6947 | // Warn for unions passing across security boundary (CMSE). | ||||||||
6948 | if (FuncT != nullptr && FuncT->getCmseNSCallAttr()) { | ||||||||
6949 | for (unsigned i = 0, e = Args.size(); i != e; i++) { | ||||||||
6950 | if (const auto *RT = | ||||||||
6951 | dyn_cast<RecordType>(Args[i]->getType().getCanonicalType())) { | ||||||||
6952 | if (RT->getDecl()->isOrContainsUnion()) | ||||||||
6953 | Diag(Args[i]->getBeginLoc(), diag::warn_cmse_nonsecure_union) | ||||||||
6954 | << 0 << i; | ||||||||
6955 | } | ||||||||
6956 | } | ||||||||
6957 | } | ||||||||
6958 | |||||||||
6959 | // Do special checking on direct calls to functions. | ||||||||
6960 | if (FDecl) { | ||||||||
6961 | if (CheckFunctionCall(FDecl, TheCall, Proto)) | ||||||||
6962 | return ExprError(); | ||||||||
6963 | |||||||||
6964 | checkFortifiedBuiltinMemoryFunction(FDecl, TheCall); | ||||||||
6965 | |||||||||
6966 | if (BuiltinID) | ||||||||
6967 | return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); | ||||||||
6968 | } else if (NDecl) { | ||||||||
6969 | if (CheckPointerCall(NDecl, TheCall, Proto)) | ||||||||
6970 | return ExprError(); | ||||||||
6971 | } else { | ||||||||
6972 | if (CheckOtherCall(TheCall, Proto)) | ||||||||
6973 | return ExprError(); | ||||||||
6974 | } | ||||||||
6975 | |||||||||
6976 | return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), FDecl); | ||||||||
6977 | } | ||||||||
6978 | |||||||||
6979 | ExprResult | ||||||||
6980 | Sema::ActOnCompoundLiteral(SourceLocation LParenLoc, ParsedType Ty, | ||||||||
6981 | SourceLocation RParenLoc, Expr *InitExpr) { | ||||||||
6982 | assert(Ty && "ActOnCompoundLiteral(): missing type")(static_cast <bool> (Ty && "ActOnCompoundLiteral(): missing type" ) ? void (0) : __assert_fail ("Ty && \"ActOnCompoundLiteral(): missing type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6982, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6983 | assert(InitExpr && "ActOnCompoundLiteral(): missing expression")(static_cast <bool> (InitExpr && "ActOnCompoundLiteral(): missing expression" ) ? void (0) : __assert_fail ("InitExpr && \"ActOnCompoundLiteral(): missing expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 6983, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6984 | |||||||||
6985 | TypeSourceInfo *TInfo; | ||||||||
6986 | QualType literalType = GetTypeFromParser(Ty, &TInfo); | ||||||||
6987 | if (!TInfo) | ||||||||
6988 | TInfo = Context.getTrivialTypeSourceInfo(literalType); | ||||||||
6989 | |||||||||
6990 | return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, InitExpr); | ||||||||
6991 | } | ||||||||
6992 | |||||||||
6993 | ExprResult | ||||||||
6994 | Sema::BuildCompoundLiteralExpr(SourceLocation LParenLoc, TypeSourceInfo *TInfo, | ||||||||
6995 | SourceLocation RParenLoc, Expr *LiteralExpr) { | ||||||||
6996 | QualType literalType = TInfo->getType(); | ||||||||
6997 | |||||||||
6998 | if (literalType->isArrayType()) { | ||||||||
6999 | if (RequireCompleteSizedType( | ||||||||
7000 | LParenLoc, Context.getBaseElementType(literalType), | ||||||||
7001 | diag::err_array_incomplete_or_sizeless_type, | ||||||||
7002 | SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) | ||||||||
7003 | return ExprError(); | ||||||||
7004 | if (literalType->isVariableArrayType()) { | ||||||||
7005 | if (!tryToFixVariablyModifiedVarType(TInfo, literalType, LParenLoc, | ||||||||
7006 | diag::err_variable_object_no_init)) { | ||||||||
7007 | return ExprError(); | ||||||||
7008 | } | ||||||||
7009 | } | ||||||||
7010 | } else if (!literalType->isDependentType() && | ||||||||
7011 | RequireCompleteType(LParenLoc, literalType, | ||||||||
7012 | diag::err_typecheck_decl_incomplete_type, | ||||||||
7013 | SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) | ||||||||
7014 | return ExprError(); | ||||||||
7015 | |||||||||
7016 | InitializedEntity Entity | ||||||||
7017 | = InitializedEntity::InitializeCompoundLiteralInit(TInfo); | ||||||||
7018 | InitializationKind Kind | ||||||||
7019 | = InitializationKind::CreateCStyleCast(LParenLoc, | ||||||||
7020 | SourceRange(LParenLoc, RParenLoc), | ||||||||
7021 | /*InitList=*/true); | ||||||||
7022 | InitializationSequence InitSeq(*this, Entity, Kind, LiteralExpr); | ||||||||
7023 | ExprResult Result = InitSeq.Perform(*this, Entity, Kind, LiteralExpr, | ||||||||
7024 | &literalType); | ||||||||
7025 | if (Result.isInvalid()) | ||||||||
7026 | return ExprError(); | ||||||||
7027 | LiteralExpr = Result.get(); | ||||||||
7028 | |||||||||
7029 | bool isFileScope = !CurContext->isFunctionOrMethod(); | ||||||||
7030 | |||||||||
7031 | // In C, compound literals are l-values for some reason. | ||||||||
7032 | // For GCC compatibility, in C++, file-scope array compound literals with | ||||||||
7033 | // constant initializers are also l-values, and compound literals are | ||||||||
7034 | // otherwise prvalues. | ||||||||
7035 | // | ||||||||
7036 | // (GCC also treats C++ list-initialized file-scope array prvalues with | ||||||||
7037 | // constant initializers as l-values, but that's non-conforming, so we don't | ||||||||
7038 | // follow it there.) | ||||||||
7039 | // | ||||||||
7040 | // FIXME: It would be better to handle the lvalue cases as materializing and | ||||||||
7041 | // lifetime-extending a temporary object, but our materialized temporaries | ||||||||
7042 | // representation only supports lifetime extension from a variable, not "out | ||||||||
7043 | // of thin air". | ||||||||
7044 | // FIXME: For C++, we might want to instead lifetime-extend only if a pointer | ||||||||
7045 | // is bound to the result of applying array-to-pointer decay to the compound | ||||||||
7046 | // literal. | ||||||||
7047 | // FIXME: GCC supports compound literals of reference type, which should | ||||||||
7048 | // obviously have a value kind derived from the kind of reference involved. | ||||||||
7049 | ExprValueKind VK = | ||||||||
7050 | (getLangOpts().CPlusPlus && !(isFileScope && literalType->isArrayType())) | ||||||||
7051 | ? VK_PRValue | ||||||||
7052 | : VK_LValue; | ||||||||
7053 | |||||||||
7054 | if (isFileScope) | ||||||||
7055 | if (auto ILE = dyn_cast<InitListExpr>(LiteralExpr)) | ||||||||
7056 | for (unsigned i = 0, j = ILE->getNumInits(); i != j; i++) { | ||||||||
7057 | Expr *Init = ILE->getInit(i); | ||||||||
7058 | ILE->setInit(i, ConstantExpr::Create(Context, Init)); | ||||||||
7059 | } | ||||||||
7060 | |||||||||
7061 | auto *E = new (Context) CompoundLiteralExpr(LParenLoc, TInfo, literalType, | ||||||||
7062 | VK, LiteralExpr, isFileScope); | ||||||||
7063 | if (isFileScope) { | ||||||||
7064 | if (!LiteralExpr->isTypeDependent() && | ||||||||
7065 | !LiteralExpr->isValueDependent() && | ||||||||
7066 | !literalType->isDependentType()) // C99 6.5.2.5p3 | ||||||||
7067 | if (CheckForConstantInitializer(LiteralExpr, literalType)) | ||||||||
7068 | return ExprError(); | ||||||||
7069 | } else if (literalType.getAddressSpace() != LangAS::opencl_private && | ||||||||
7070 | literalType.getAddressSpace() != LangAS::Default) { | ||||||||
7071 | // Embedded-C extensions to C99 6.5.2.5: | ||||||||
7072 | // "If the compound literal occurs inside the body of a function, the | ||||||||
7073 | // type name shall not be qualified by an address-space qualifier." | ||||||||
7074 | Diag(LParenLoc, diag::err_compound_literal_with_address_space) | ||||||||
7075 | << SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()); | ||||||||
7076 | return ExprError(); | ||||||||
7077 | } | ||||||||
7078 | |||||||||
7079 | if (!isFileScope && !getLangOpts().CPlusPlus) { | ||||||||
7080 | // Compound literals that have automatic storage duration are destroyed at | ||||||||
7081 | // the end of the scope in C; in C++, they're just temporaries. | ||||||||
7082 | |||||||||
7083 | // Emit diagnostics if it is or contains a C union type that is non-trivial | ||||||||
7084 | // to destruct. | ||||||||
7085 | if (E->getType().hasNonTrivialToPrimitiveDestructCUnion()) | ||||||||
7086 | checkNonTrivialCUnion(E->getType(), E->getExprLoc(), | ||||||||
7087 | NTCUC_CompoundLiteral, NTCUK_Destruct); | ||||||||
7088 | |||||||||
7089 | // Diagnose jumps that enter or exit the lifetime of the compound literal. | ||||||||
7090 | if (literalType.isDestructedType()) { | ||||||||
7091 | Cleanup.setExprNeedsCleanups(true); | ||||||||
7092 | ExprCleanupObjects.push_back(E); | ||||||||
7093 | getCurFunction()->setHasBranchProtectedScope(); | ||||||||
7094 | } | ||||||||
7095 | } | ||||||||
7096 | |||||||||
7097 | if (E->getType().hasNonTrivialToPrimitiveDefaultInitializeCUnion() || | ||||||||
7098 | E->getType().hasNonTrivialToPrimitiveCopyCUnion()) | ||||||||
7099 | checkNonTrivialCUnionInInitializer(E->getInitializer(), | ||||||||
7100 | E->getInitializer()->getExprLoc()); | ||||||||
7101 | |||||||||
7102 | return MaybeBindToTemporary(E); | ||||||||
7103 | } | ||||||||
7104 | |||||||||
7105 | ExprResult | ||||||||
7106 | Sema::ActOnInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, | ||||||||
7107 | SourceLocation RBraceLoc) { | ||||||||
7108 | // Only produce each kind of designated initialization diagnostic once. | ||||||||
7109 | SourceLocation FirstDesignator; | ||||||||
7110 | bool DiagnosedArrayDesignator = false; | ||||||||
7111 | bool DiagnosedNestedDesignator = false; | ||||||||
7112 | bool DiagnosedMixedDesignator = false; | ||||||||
7113 | |||||||||
7114 | // Check that any designated initializers are syntactically valid in the | ||||||||
7115 | // current language mode. | ||||||||
7116 | for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { | ||||||||
7117 | if (auto *DIE = dyn_cast<DesignatedInitExpr>(InitArgList[I])) { | ||||||||
7118 | if (FirstDesignator.isInvalid()) | ||||||||
7119 | FirstDesignator = DIE->getBeginLoc(); | ||||||||
7120 | |||||||||
7121 | if (!getLangOpts().CPlusPlus) | ||||||||
7122 | break; | ||||||||
7123 | |||||||||
7124 | if (!DiagnosedNestedDesignator && DIE->size() > 1) { | ||||||||
7125 | DiagnosedNestedDesignator = true; | ||||||||
7126 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_nested) | ||||||||
7127 | << DIE->getDesignatorsSourceRange(); | ||||||||
7128 | } | ||||||||
7129 | |||||||||
7130 | for (auto &Desig : DIE->designators()) { | ||||||||
7131 | if (!Desig.isFieldDesignator() && !DiagnosedArrayDesignator) { | ||||||||
7132 | DiagnosedArrayDesignator = true; | ||||||||
7133 | Diag(Desig.getBeginLoc(), diag::ext_designated_init_array) | ||||||||
7134 | << Desig.getSourceRange(); | ||||||||
7135 | } | ||||||||
7136 | } | ||||||||
7137 | |||||||||
7138 | if (!DiagnosedMixedDesignator && | ||||||||
7139 | !isa<DesignatedInitExpr>(InitArgList[0])) { | ||||||||
7140 | DiagnosedMixedDesignator = true; | ||||||||
7141 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) | ||||||||
7142 | << DIE->getSourceRange(); | ||||||||
7143 | Diag(InitArgList[0]->getBeginLoc(), diag::note_designated_init_mixed) | ||||||||
7144 | << InitArgList[0]->getSourceRange(); | ||||||||
7145 | } | ||||||||
7146 | } else if (getLangOpts().CPlusPlus && !DiagnosedMixedDesignator && | ||||||||
7147 | isa<DesignatedInitExpr>(InitArgList[0])) { | ||||||||
7148 | DiagnosedMixedDesignator = true; | ||||||||
7149 | auto *DIE = cast<DesignatedInitExpr>(InitArgList[0]); | ||||||||
7150 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) | ||||||||
7151 | << DIE->getSourceRange(); | ||||||||
7152 | Diag(InitArgList[I]->getBeginLoc(), diag::note_designated_init_mixed) | ||||||||
7153 | << InitArgList[I]->getSourceRange(); | ||||||||
7154 | } | ||||||||
7155 | } | ||||||||
7156 | |||||||||
7157 | if (FirstDesignator.isValid()) { | ||||||||
7158 | // Only diagnose designated initiaization as a C++20 extension if we didn't | ||||||||
7159 | // already diagnose use of (non-C++20) C99 designator syntax. | ||||||||
7160 | if (getLangOpts().CPlusPlus && !DiagnosedArrayDesignator && | ||||||||
7161 | !DiagnosedNestedDesignator && !DiagnosedMixedDesignator) { | ||||||||
7162 | Diag(FirstDesignator, getLangOpts().CPlusPlus20 | ||||||||
7163 | ? diag::warn_cxx17_compat_designated_init | ||||||||
7164 | : diag::ext_cxx_designated_init); | ||||||||
7165 | } else if (!getLangOpts().CPlusPlus && !getLangOpts().C99) { | ||||||||
7166 | Diag(FirstDesignator, diag::ext_designated_init); | ||||||||
7167 | } | ||||||||
7168 | } | ||||||||
7169 | |||||||||
7170 | return BuildInitList(LBraceLoc, InitArgList, RBraceLoc); | ||||||||
7171 | } | ||||||||
7172 | |||||||||
7173 | ExprResult | ||||||||
7174 | Sema::BuildInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, | ||||||||
7175 | SourceLocation RBraceLoc) { | ||||||||
7176 | // Semantic analysis for initializers is done by ActOnDeclarator() and | ||||||||
7177 | // CheckInitializer() - it requires knowledge of the object being initialized. | ||||||||
7178 | |||||||||
7179 | // Immediately handle non-overload placeholders. Overloads can be | ||||||||
7180 | // resolved contextually, but everything else here can't. | ||||||||
7181 | for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { | ||||||||
7182 | if (InitArgList[I]->getType()->isNonOverloadPlaceholderType()) { | ||||||||
7183 | ExprResult result = CheckPlaceholderExpr(InitArgList[I]); | ||||||||
7184 | |||||||||
7185 | // Ignore failures; dropping the entire initializer list because | ||||||||
7186 | // of one failure would be terrible for indexing/etc. | ||||||||
7187 | if (result.isInvalid()) continue; | ||||||||
7188 | |||||||||
7189 | InitArgList[I] = result.get(); | ||||||||
7190 | } | ||||||||
7191 | } | ||||||||
7192 | |||||||||
7193 | InitListExpr *E = new (Context) InitListExpr(Context, LBraceLoc, InitArgList, | ||||||||
7194 | RBraceLoc); | ||||||||
7195 | E->setType(Context.VoidTy); // FIXME: just a place holder for now. | ||||||||
7196 | return E; | ||||||||
7197 | } | ||||||||
7198 | |||||||||
7199 | /// Do an explicit extend of the given block pointer if we're in ARC. | ||||||||
7200 | void Sema::maybeExtendBlockObject(ExprResult &E) { | ||||||||
7201 | assert(E.get()->getType()->isBlockPointerType())(static_cast <bool> (E.get()->getType()->isBlockPointerType ()) ? void (0) : __assert_fail ("E.get()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7201, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7202 | assert(E.get()->isPRValue())(static_cast <bool> (E.get()->isPRValue()) ? void (0 ) : __assert_fail ("E.get()->isPRValue()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7202, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7203 | |||||||||
7204 | // Only do this in an r-value context. | ||||||||
7205 | if (!getLangOpts().ObjCAutoRefCount) return; | ||||||||
7206 | |||||||||
7207 | E = ImplicitCastExpr::Create( | ||||||||
7208 | Context, E.get()->getType(), CK_ARCExtendBlockObject, E.get(), | ||||||||
7209 | /*base path*/ nullptr, VK_PRValue, FPOptionsOverride()); | ||||||||
7210 | Cleanup.setExprNeedsCleanups(true); | ||||||||
7211 | } | ||||||||
7212 | |||||||||
7213 | /// Prepare a conversion of the given expression to an ObjC object | ||||||||
7214 | /// pointer type. | ||||||||
7215 | CastKind Sema::PrepareCastToObjCObjectPointer(ExprResult &E) { | ||||||||
7216 | QualType type = E.get()->getType(); | ||||||||
7217 | if (type->isObjCObjectPointerType()) { | ||||||||
7218 | return CK_BitCast; | ||||||||
7219 | } else if (type->isBlockPointerType()) { | ||||||||
7220 | maybeExtendBlockObject(E); | ||||||||
7221 | return CK_BlockPointerToObjCPointerCast; | ||||||||
7222 | } else { | ||||||||
7223 | assert(type->isPointerType())(static_cast <bool> (type->isPointerType()) ? void ( 0) : __assert_fail ("type->isPointerType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7223, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7224 | return CK_CPointerToObjCPointerCast; | ||||||||
7225 | } | ||||||||
7226 | } | ||||||||
7227 | |||||||||
7228 | /// Prepares for a scalar cast, performing all the necessary stages | ||||||||
7229 | /// except the final cast and returning the kind required. | ||||||||
7230 | CastKind Sema::PrepareScalarCast(ExprResult &Src, QualType DestTy) { | ||||||||
7231 | // Both Src and Dest are scalar types, i.e. arithmetic or pointer. | ||||||||
7232 | // Also, callers should have filtered out the invalid cases with | ||||||||
7233 | // pointers. Everything else should be possible. | ||||||||
7234 | |||||||||
7235 | QualType SrcTy = Src.get()->getType(); | ||||||||
7236 | if (Context.hasSameUnqualifiedType(SrcTy, DestTy)) | ||||||||
7237 | return CK_NoOp; | ||||||||
7238 | |||||||||
7239 | switch (Type::ScalarTypeKind SrcKind = SrcTy->getScalarTypeKind()) { | ||||||||
7240 | case Type::STK_MemberPointer: | ||||||||
7241 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7241); | ||||||||
7242 | |||||||||
7243 | case Type::STK_CPointer: | ||||||||
7244 | case Type::STK_BlockPointer: | ||||||||
7245 | case Type::STK_ObjCObjectPointer: | ||||||||
7246 | switch (DestTy->getScalarTypeKind()) { | ||||||||
7247 | case Type::STK_CPointer: { | ||||||||
7248 | LangAS SrcAS = SrcTy->getPointeeType().getAddressSpace(); | ||||||||
7249 | LangAS DestAS = DestTy->getPointeeType().getAddressSpace(); | ||||||||
7250 | if (SrcAS != DestAS) | ||||||||
7251 | return CK_AddressSpaceConversion; | ||||||||
7252 | if (Context.hasCvrSimilarType(SrcTy, DestTy)) | ||||||||
7253 | return CK_NoOp; | ||||||||
7254 | return CK_BitCast; | ||||||||
7255 | } | ||||||||
7256 | case Type::STK_BlockPointer: | ||||||||
7257 | return (SrcKind == Type::STK_BlockPointer | ||||||||
7258 | ? CK_BitCast : CK_AnyPointerToBlockPointerCast); | ||||||||
7259 | case Type::STK_ObjCObjectPointer: | ||||||||
7260 | if (SrcKind == Type::STK_ObjCObjectPointer) | ||||||||
7261 | return CK_BitCast; | ||||||||
7262 | if (SrcKind == Type::STK_CPointer) | ||||||||
7263 | return CK_CPointerToObjCPointerCast; | ||||||||
7264 | maybeExtendBlockObject(Src); | ||||||||
7265 | return CK_BlockPointerToObjCPointerCast; | ||||||||
7266 | case Type::STK_Bool: | ||||||||
7267 | return CK_PointerToBoolean; | ||||||||
7268 | case Type::STK_Integral: | ||||||||
7269 | return CK_PointerToIntegral; | ||||||||
7270 | case Type::STK_Floating: | ||||||||
7271 | case Type::STK_FloatingComplex: | ||||||||
7272 | case Type::STK_IntegralComplex: | ||||||||
7273 | case Type::STK_MemberPointer: | ||||||||
7274 | case Type::STK_FixedPoint: | ||||||||
7275 | llvm_unreachable("illegal cast from pointer")::llvm::llvm_unreachable_internal("illegal cast from pointer" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7275); | ||||||||
7276 | } | ||||||||
7277 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7277); | ||||||||
7278 | |||||||||
7279 | case Type::STK_FixedPoint: | ||||||||
7280 | switch (DestTy->getScalarTypeKind()) { | ||||||||
7281 | case Type::STK_FixedPoint: | ||||||||
7282 | return CK_FixedPointCast; | ||||||||
7283 | case Type::STK_Bool: | ||||||||
7284 | return CK_FixedPointToBoolean; | ||||||||
7285 | case Type::STK_Integral: | ||||||||
7286 | return CK_FixedPointToIntegral; | ||||||||
7287 | case Type::STK_Floating: | ||||||||
7288 | return CK_FixedPointToFloating; | ||||||||
7289 | case Type::STK_IntegralComplex: | ||||||||
7290 | case Type::STK_FloatingComplex: | ||||||||
7291 | Diag(Src.get()->getExprLoc(), | ||||||||
7292 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
7293 | << DestTy; | ||||||||
7294 | return CK_IntegralCast; | ||||||||
7295 | case Type::STK_CPointer: | ||||||||
7296 | case Type::STK_ObjCObjectPointer: | ||||||||
7297 | case Type::STK_BlockPointer: | ||||||||
7298 | case Type::STK_MemberPointer: | ||||||||
7299 | llvm_unreachable("illegal cast to pointer type")::llvm::llvm_unreachable_internal("illegal cast to pointer type" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7299); | ||||||||
7300 | } | ||||||||
7301 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7301); | ||||||||
7302 | |||||||||
7303 | case Type::STK_Bool: // casting from bool is like casting from an integer | ||||||||
7304 | case Type::STK_Integral: | ||||||||
7305 | switch (DestTy->getScalarTypeKind()) { | ||||||||
7306 | case Type::STK_CPointer: | ||||||||
7307 | case Type::STK_ObjCObjectPointer: | ||||||||
7308 | case Type::STK_BlockPointer: | ||||||||
7309 | if (Src.get()->isNullPointerConstant(Context, | ||||||||
7310 | Expr::NPC_ValueDependentIsNull)) | ||||||||
7311 | return CK_NullToPointer; | ||||||||
7312 | return CK_IntegralToPointer; | ||||||||
7313 | case Type::STK_Bool: | ||||||||
7314 | return CK_IntegralToBoolean; | ||||||||
7315 | case Type::STK_Integral: | ||||||||
7316 | return CK_IntegralCast; | ||||||||
7317 | case Type::STK_Floating: | ||||||||
7318 | return CK_IntegralToFloating; | ||||||||
7319 | case Type::STK_IntegralComplex: | ||||||||
7320 | Src = ImpCastExprToType(Src.get(), | ||||||||
7321 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
7322 | CK_IntegralCast); | ||||||||
7323 | return CK_IntegralRealToComplex; | ||||||||
7324 | case Type::STK_FloatingComplex: | ||||||||
7325 | Src = ImpCastExprToType(Src.get(), | ||||||||
7326 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
7327 | CK_IntegralToFloating); | ||||||||
7328 | return CK_FloatingRealToComplex; | ||||||||
7329 | case Type::STK_MemberPointer: | ||||||||
7330 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7330); | ||||||||
7331 | case Type::STK_FixedPoint: | ||||||||
7332 | return CK_IntegralToFixedPoint; | ||||||||
7333 | } | ||||||||
7334 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7334); | ||||||||
7335 | |||||||||
7336 | case Type::STK_Floating: | ||||||||
7337 | switch (DestTy->getScalarTypeKind()) { | ||||||||
7338 | case Type::STK_Floating: | ||||||||
7339 | return CK_FloatingCast; | ||||||||
7340 | case Type::STK_Bool: | ||||||||
7341 | return CK_FloatingToBoolean; | ||||||||
7342 | case Type::STK_Integral: | ||||||||
7343 | return CK_FloatingToIntegral; | ||||||||
7344 | case Type::STK_FloatingComplex: | ||||||||
7345 | Src = ImpCastExprToType(Src.get(), | ||||||||
7346 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
7347 | CK_FloatingCast); | ||||||||
7348 | return CK_FloatingRealToComplex; | ||||||||
7349 | case Type::STK_IntegralComplex: | ||||||||
7350 | Src = ImpCastExprToType(Src.get(), | ||||||||
7351 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
7352 | CK_FloatingToIntegral); | ||||||||
7353 | return CK_IntegralRealToComplex; | ||||||||
7354 | case Type::STK_CPointer: | ||||||||
7355 | case Type::STK_ObjCObjectPointer: | ||||||||
7356 | case Type::STK_BlockPointer: | ||||||||
7357 | llvm_unreachable("valid float->pointer cast?")::llvm::llvm_unreachable_internal("valid float->pointer cast?" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7357); | ||||||||
7358 | case Type::STK_MemberPointer: | ||||||||
7359 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7359); | ||||||||
7360 | case Type::STK_FixedPoint: | ||||||||
7361 | return CK_FloatingToFixedPoint; | ||||||||
7362 | } | ||||||||
7363 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7363); | ||||||||
7364 | |||||||||
7365 | case Type::STK_FloatingComplex: | ||||||||
7366 | switch (DestTy->getScalarTypeKind()) { | ||||||||
7367 | case Type::STK_FloatingComplex: | ||||||||
7368 | return CK_FloatingComplexCast; | ||||||||
7369 | case Type::STK_IntegralComplex: | ||||||||
7370 | return CK_FloatingComplexToIntegralComplex; | ||||||||
7371 | case Type::STK_Floating: { | ||||||||
7372 | QualType ET = SrcTy->castAs<ComplexType>()->getElementType(); | ||||||||
7373 | if (Context.hasSameType(ET, DestTy)) | ||||||||
7374 | return CK_FloatingComplexToReal; | ||||||||
7375 | Src = ImpCastExprToType(Src.get(), ET, CK_FloatingComplexToReal); | ||||||||
7376 | return CK_FloatingCast; | ||||||||
7377 | } | ||||||||
7378 | case Type::STK_Bool: | ||||||||
7379 | return CK_FloatingComplexToBoolean; | ||||||||
7380 | case Type::STK_Integral: | ||||||||
7381 | Src = ImpCastExprToType(Src.get(), | ||||||||
7382 | SrcTy->castAs<ComplexType>()->getElementType(), | ||||||||
7383 | CK_FloatingComplexToReal); | ||||||||
7384 | return CK_FloatingToIntegral; | ||||||||
7385 | case Type::STK_CPointer: | ||||||||
7386 | case Type::STK_ObjCObjectPointer: | ||||||||
7387 | case Type::STK_BlockPointer: | ||||||||
7388 | llvm_unreachable("valid complex float->pointer cast?")::llvm::llvm_unreachable_internal("valid complex float->pointer cast?" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7388); | ||||||||
7389 | case Type::STK_MemberPointer: | ||||||||
7390 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7390); | ||||||||
7391 | case Type::STK_FixedPoint: | ||||||||
7392 | Diag(Src.get()->getExprLoc(), | ||||||||
7393 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
7394 | << SrcTy; | ||||||||
7395 | return CK_IntegralCast; | ||||||||
7396 | } | ||||||||
7397 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7397); | ||||||||
7398 | |||||||||
7399 | case Type::STK_IntegralComplex: | ||||||||
7400 | switch (DestTy->getScalarTypeKind()) { | ||||||||
7401 | case Type::STK_FloatingComplex: | ||||||||
7402 | return CK_IntegralComplexToFloatingComplex; | ||||||||
7403 | case Type::STK_IntegralComplex: | ||||||||
7404 | return CK_IntegralComplexCast; | ||||||||
7405 | case Type::STK_Integral: { | ||||||||
7406 | QualType ET = SrcTy->castAs<ComplexType>()->getElementType(); | ||||||||
7407 | if (Context.hasSameType(ET, DestTy)) | ||||||||
7408 | return CK_IntegralComplexToReal; | ||||||||
7409 | Src = ImpCastExprToType(Src.get(), ET, CK_IntegralComplexToReal); | ||||||||
7410 | return CK_IntegralCast; | ||||||||
7411 | } | ||||||||
7412 | case Type::STK_Bool: | ||||||||
7413 | return CK_IntegralComplexToBoolean; | ||||||||
7414 | case Type::STK_Floating: | ||||||||
7415 | Src = ImpCastExprToType(Src.get(), | ||||||||
7416 | SrcTy->castAs<ComplexType>()->getElementType(), | ||||||||
7417 | CK_IntegralComplexToReal); | ||||||||
7418 | return CK_IntegralToFloating; | ||||||||
7419 | case Type::STK_CPointer: | ||||||||
7420 | case Type::STK_ObjCObjectPointer: | ||||||||
7421 | case Type::STK_BlockPointer: | ||||||||
7422 | llvm_unreachable("valid complex int->pointer cast?")::llvm::llvm_unreachable_internal("valid complex int->pointer cast?" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7422); | ||||||||
7423 | case Type::STK_MemberPointer: | ||||||||
7424 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7424); | ||||||||
7425 | case Type::STK_FixedPoint: | ||||||||
7426 | Diag(Src.get()->getExprLoc(), | ||||||||
7427 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
7428 | << SrcTy; | ||||||||
7429 | return CK_IntegralCast; | ||||||||
7430 | } | ||||||||
7431 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7431); | ||||||||
7432 | } | ||||||||
7433 | |||||||||
7434 | llvm_unreachable("Unhandled scalar cast")::llvm::llvm_unreachable_internal("Unhandled scalar cast", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7434); | ||||||||
7435 | } | ||||||||
7436 | |||||||||
7437 | static bool breakDownVectorType(QualType type, uint64_t &len, | ||||||||
7438 | QualType &eltType) { | ||||||||
7439 | // Vectors are simple. | ||||||||
7440 | if (const VectorType *vecType = type->getAs<VectorType>()) { | ||||||||
7441 | len = vecType->getNumElements(); | ||||||||
7442 | eltType = vecType->getElementType(); | ||||||||
7443 | assert(eltType->isScalarType())(static_cast <bool> (eltType->isScalarType()) ? void (0) : __assert_fail ("eltType->isScalarType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7443, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7444 | return true; | ||||||||
7445 | } | ||||||||
7446 | |||||||||
7447 | // We allow lax conversion to and from non-vector types, but only if | ||||||||
7448 | // they're real types (i.e. non-complex, non-pointer scalar types). | ||||||||
7449 | if (!type->isRealType()) return false; | ||||||||
7450 | |||||||||
7451 | len = 1; | ||||||||
7452 | eltType = type; | ||||||||
7453 | return true; | ||||||||
7454 | } | ||||||||
7455 | |||||||||
7456 | /// Are the two types SVE-bitcast-compatible types? I.e. is bitcasting from the | ||||||||
7457 | /// first SVE type (e.g. an SVE VLAT) to the second type (e.g. an SVE VLST) | ||||||||
7458 | /// allowed? | ||||||||
7459 | /// | ||||||||
7460 | /// This will also return false if the two given types do not make sense from | ||||||||
7461 | /// the perspective of SVE bitcasts. | ||||||||
7462 | bool Sema::isValidSveBitcast(QualType srcTy, QualType destTy) { | ||||||||
7463 | assert(srcTy->isVectorType() || destTy->isVectorType())(static_cast <bool> (srcTy->isVectorType() || destTy ->isVectorType()) ? void (0) : __assert_fail ("srcTy->isVectorType() || destTy->isVectorType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7463, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7464 | |||||||||
7465 | auto ValidScalableConversion = [](QualType FirstType, QualType SecondType) { | ||||||||
7466 | if (!FirstType->isSizelessBuiltinType()) | ||||||||
7467 | return false; | ||||||||
7468 | |||||||||
7469 | const auto *VecTy = SecondType->getAs<VectorType>(); | ||||||||
7470 | return VecTy && | ||||||||
7471 | VecTy->getVectorKind() == VectorType::SveFixedLengthDataVector; | ||||||||
7472 | }; | ||||||||
7473 | |||||||||
7474 | return ValidScalableConversion(srcTy, destTy) || | ||||||||
7475 | ValidScalableConversion(destTy, srcTy); | ||||||||
7476 | } | ||||||||
7477 | |||||||||
7478 | /// Are the two types matrix types and do they have the same dimensions i.e. | ||||||||
7479 | /// do they have the same number of rows and the same number of columns? | ||||||||
7480 | bool Sema::areMatrixTypesOfTheSameDimension(QualType srcTy, QualType destTy) { | ||||||||
7481 | if (!destTy->isMatrixType() || !srcTy->isMatrixType()) | ||||||||
7482 | return false; | ||||||||
7483 | |||||||||
7484 | const ConstantMatrixType *matSrcType = srcTy->getAs<ConstantMatrixType>(); | ||||||||
7485 | const ConstantMatrixType *matDestType = destTy->getAs<ConstantMatrixType>(); | ||||||||
7486 | |||||||||
7487 | return matSrcType->getNumRows() == matDestType->getNumRows() && | ||||||||
7488 | matSrcType->getNumColumns() == matDestType->getNumColumns(); | ||||||||
7489 | } | ||||||||
7490 | |||||||||
7491 | bool Sema::areVectorTypesSameSize(QualType SrcTy, QualType DestTy) { | ||||||||
7492 | assert(DestTy->isVectorType() || SrcTy->isVectorType())(static_cast <bool> (DestTy->isVectorType() || SrcTy ->isVectorType()) ? void (0) : __assert_fail ("DestTy->isVectorType() || SrcTy->isVectorType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7492, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7493 | |||||||||
7494 | uint64_t SrcLen, DestLen; | ||||||||
7495 | QualType SrcEltTy, DestEltTy; | ||||||||
7496 | if (!breakDownVectorType(SrcTy, SrcLen, SrcEltTy)) | ||||||||
7497 | return false; | ||||||||
7498 | if (!breakDownVectorType(DestTy, DestLen, DestEltTy)) | ||||||||
7499 | return false; | ||||||||
7500 | |||||||||
7501 | // ASTContext::getTypeSize will return the size rounded up to a | ||||||||
7502 | // power of 2, so instead of using that, we need to use the raw | ||||||||
7503 | // element size multiplied by the element count. | ||||||||
7504 | uint64_t SrcEltSize = Context.getTypeSize(SrcEltTy); | ||||||||
7505 | uint64_t DestEltSize = Context.getTypeSize(DestEltTy); | ||||||||
7506 | |||||||||
7507 | return (SrcLen * SrcEltSize == DestLen * DestEltSize); | ||||||||
7508 | } | ||||||||
7509 | |||||||||
7510 | /// Are the two types lax-compatible vector types? That is, given | ||||||||
7511 | /// that one of them is a vector, do they have equal storage sizes, | ||||||||
7512 | /// where the storage size is the number of elements times the element | ||||||||
7513 | /// size? | ||||||||
7514 | /// | ||||||||
7515 | /// This will also return false if either of the types is neither a | ||||||||
7516 | /// vector nor a real type. | ||||||||
7517 | bool Sema::areLaxCompatibleVectorTypes(QualType srcTy, QualType destTy) { | ||||||||
7518 | assert(destTy->isVectorType() || srcTy->isVectorType())(static_cast <bool> (destTy->isVectorType() || srcTy ->isVectorType()) ? void (0) : __assert_fail ("destTy->isVectorType() || srcTy->isVectorType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7518, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7519 | |||||||||
7520 | // Disallow lax conversions between scalars and ExtVectors (these | ||||||||
7521 | // conversions are allowed for other vector types because common headers | ||||||||
7522 | // depend on them). Most scalar OP ExtVector cases are handled by the | ||||||||
7523 | // splat path anyway, which does what we want (convert, not bitcast). | ||||||||
7524 | // What this rules out for ExtVectors is crazy things like char4*float. | ||||||||
7525 | if (srcTy->isScalarType() && destTy->isExtVectorType()) return false; | ||||||||
7526 | if (destTy->isScalarType() && srcTy->isExtVectorType()) return false; | ||||||||
7527 | |||||||||
7528 | return areVectorTypesSameSize(srcTy, destTy); | ||||||||
7529 | } | ||||||||
7530 | |||||||||
7531 | /// Is this a legal conversion between two types, one of which is | ||||||||
7532 | /// known to be a vector type? | ||||||||
7533 | bool Sema::isLaxVectorConversion(QualType srcTy, QualType destTy) { | ||||||||
7534 | assert(destTy->isVectorType() || srcTy->isVectorType())(static_cast <bool> (destTy->isVectorType() || srcTy ->isVectorType()) ? void (0) : __assert_fail ("destTy->isVectorType() || srcTy->isVectorType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7534, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7535 | |||||||||
7536 | switch (Context.getLangOpts().getLaxVectorConversions()) { | ||||||||
7537 | case LangOptions::LaxVectorConversionKind::None: | ||||||||
7538 | return false; | ||||||||
7539 | |||||||||
7540 | case LangOptions::LaxVectorConversionKind::Integer: | ||||||||
7541 | if (!srcTy->isIntegralOrEnumerationType()) { | ||||||||
7542 | auto *Vec = srcTy->getAs<VectorType>(); | ||||||||
7543 | if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) | ||||||||
7544 | return false; | ||||||||
7545 | } | ||||||||
7546 | if (!destTy->isIntegralOrEnumerationType()) { | ||||||||
7547 | auto *Vec = destTy->getAs<VectorType>(); | ||||||||
7548 | if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) | ||||||||
7549 | return false; | ||||||||
7550 | } | ||||||||
7551 | // OK, integer (vector) -> integer (vector) bitcast. | ||||||||
7552 | break; | ||||||||
7553 | |||||||||
7554 | case LangOptions::LaxVectorConversionKind::All: | ||||||||
7555 | break; | ||||||||
7556 | } | ||||||||
7557 | |||||||||
7558 | return areLaxCompatibleVectorTypes(srcTy, destTy); | ||||||||
7559 | } | ||||||||
7560 | |||||||||
7561 | bool Sema::CheckMatrixCast(SourceRange R, QualType DestTy, QualType SrcTy, | ||||||||
7562 | CastKind &Kind) { | ||||||||
7563 | if (SrcTy->isMatrixType() && DestTy->isMatrixType()) { | ||||||||
7564 | if (!areMatrixTypesOfTheSameDimension(SrcTy, DestTy)) { | ||||||||
7565 | return Diag(R.getBegin(), diag::err_invalid_conversion_between_matrixes) | ||||||||
7566 | << DestTy << SrcTy << R; | ||||||||
7567 | } | ||||||||
7568 | } else if (SrcTy->isMatrixType()) { | ||||||||
7569 | return Diag(R.getBegin(), | ||||||||
7570 | diag::err_invalid_conversion_between_matrix_and_type) | ||||||||
7571 | << SrcTy << DestTy << R; | ||||||||
7572 | } else if (DestTy->isMatrixType()) { | ||||||||
7573 | return Diag(R.getBegin(), | ||||||||
7574 | diag::err_invalid_conversion_between_matrix_and_type) | ||||||||
7575 | << DestTy << SrcTy << R; | ||||||||
7576 | } | ||||||||
7577 | |||||||||
7578 | Kind = CK_MatrixCast; | ||||||||
7579 | return false; | ||||||||
7580 | } | ||||||||
7581 | |||||||||
7582 | bool Sema::CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, | ||||||||
7583 | CastKind &Kind) { | ||||||||
7584 | assert(VectorTy->isVectorType() && "Not a vector type!")(static_cast <bool> (VectorTy->isVectorType() && "Not a vector type!") ? void (0) : __assert_fail ("VectorTy->isVectorType() && \"Not a vector type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7584, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7585 | |||||||||
7586 | if (Ty->isVectorType() || Ty->isIntegralType(Context)) { | ||||||||
7587 | if (!areLaxCompatibleVectorTypes(Ty, VectorTy)) | ||||||||
7588 | return Diag(R.getBegin(), | ||||||||
7589 | Ty->isVectorType() ? | ||||||||
7590 | diag::err_invalid_conversion_between_vectors : | ||||||||
7591 | diag::err_invalid_conversion_between_vector_and_integer) | ||||||||
7592 | << VectorTy << Ty << R; | ||||||||
7593 | } else | ||||||||
7594 | return Diag(R.getBegin(), | ||||||||
7595 | diag::err_invalid_conversion_between_vector_and_scalar) | ||||||||
7596 | << VectorTy << Ty << R; | ||||||||
7597 | |||||||||
7598 | Kind = CK_BitCast; | ||||||||
7599 | return false; | ||||||||
7600 | } | ||||||||
7601 | |||||||||
7602 | ExprResult Sema::prepareVectorSplat(QualType VectorTy, Expr *SplattedExpr) { | ||||||||
7603 | QualType DestElemTy = VectorTy->castAs<VectorType>()->getElementType(); | ||||||||
7604 | |||||||||
7605 | if (DestElemTy == SplattedExpr->getType()) | ||||||||
7606 | return SplattedExpr; | ||||||||
7607 | |||||||||
7608 | assert(DestElemTy->isFloatingType() ||(static_cast <bool> (DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()) ? void (0) : __assert_fail ("DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7609, __extension__ __PRETTY_FUNCTION__)) | ||||||||
7609 | DestElemTy->isIntegralOrEnumerationType())(static_cast <bool> (DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()) ? void (0) : __assert_fail ("DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7609, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7610 | |||||||||
7611 | CastKind CK; | ||||||||
7612 | if (VectorTy->isExtVectorType() && SplattedExpr->getType()->isBooleanType()) { | ||||||||
7613 | // OpenCL requires that we convert `true` boolean expressions to -1, but | ||||||||
7614 | // only when splatting vectors. | ||||||||
7615 | if (DestElemTy->isFloatingType()) { | ||||||||
7616 | // To avoid having to have a CK_BooleanToSignedFloating cast kind, we cast | ||||||||
7617 | // in two steps: boolean to signed integral, then to floating. | ||||||||
7618 | ExprResult CastExprRes = ImpCastExprToType(SplattedExpr, Context.IntTy, | ||||||||
7619 | CK_BooleanToSignedIntegral); | ||||||||
7620 | SplattedExpr = CastExprRes.get(); | ||||||||
7621 | CK = CK_IntegralToFloating; | ||||||||
7622 | } else { | ||||||||
7623 | CK = CK_BooleanToSignedIntegral; | ||||||||
7624 | } | ||||||||
7625 | } else { | ||||||||
7626 | ExprResult CastExprRes = SplattedExpr; | ||||||||
7627 | CK = PrepareScalarCast(CastExprRes, DestElemTy); | ||||||||
7628 | if (CastExprRes.isInvalid()) | ||||||||
7629 | return ExprError(); | ||||||||
7630 | SplattedExpr = CastExprRes.get(); | ||||||||
7631 | } | ||||||||
7632 | return ImpCastExprToType(SplattedExpr, DestElemTy, CK); | ||||||||
7633 | } | ||||||||
7634 | |||||||||
7635 | ExprResult Sema::CheckExtVectorCast(SourceRange R, QualType DestTy, | ||||||||
7636 | Expr *CastExpr, CastKind &Kind) { | ||||||||
7637 | assert(DestTy->isExtVectorType() && "Not an extended vector type!")(static_cast <bool> (DestTy->isExtVectorType() && "Not an extended vector type!") ? void (0) : __assert_fail ( "DestTy->isExtVectorType() && \"Not an extended vector type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7637, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7638 | |||||||||
7639 | QualType SrcTy = CastExpr->getType(); | ||||||||
7640 | |||||||||
7641 | // If SrcTy is a VectorType, the total size must match to explicitly cast to | ||||||||
7642 | // an ExtVectorType. | ||||||||
7643 | // In OpenCL, casts between vectors of different types are not allowed. | ||||||||
7644 | // (See OpenCL 6.2). | ||||||||
7645 | if (SrcTy->isVectorType()) { | ||||||||
7646 | if (!areLaxCompatibleVectorTypes(SrcTy, DestTy) || | ||||||||
7647 | (getLangOpts().OpenCL && | ||||||||
7648 | !Context.hasSameUnqualifiedType(DestTy, SrcTy))) { | ||||||||
7649 | Diag(R.getBegin(),diag::err_invalid_conversion_between_ext_vectors) | ||||||||
7650 | << DestTy << SrcTy << R; | ||||||||
7651 | return ExprError(); | ||||||||
7652 | } | ||||||||
7653 | Kind = CK_BitCast; | ||||||||
7654 | return CastExpr; | ||||||||
7655 | } | ||||||||
7656 | |||||||||
7657 | // All non-pointer scalars can be cast to ExtVector type. The appropriate | ||||||||
7658 | // conversion will take place first from scalar to elt type, and then | ||||||||
7659 | // splat from elt type to vector. | ||||||||
7660 | if (SrcTy->isPointerType()) | ||||||||
7661 | return Diag(R.getBegin(), | ||||||||
7662 | diag::err_invalid_conversion_between_vector_and_scalar) | ||||||||
7663 | << DestTy << SrcTy << R; | ||||||||
7664 | |||||||||
7665 | Kind = CK_VectorSplat; | ||||||||
7666 | return prepareVectorSplat(DestTy, CastExpr); | ||||||||
7667 | } | ||||||||
7668 | |||||||||
7669 | ExprResult | ||||||||
7670 | Sema::ActOnCastExpr(Scope *S, SourceLocation LParenLoc, | ||||||||
7671 | Declarator &D, ParsedType &Ty, | ||||||||
7672 | SourceLocation RParenLoc, Expr *CastExpr) { | ||||||||
7673 | assert(!D.isInvalidType() && (CastExpr != nullptr) &&(static_cast <bool> (!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr" ) ? void (0) : __assert_fail ("!D.isInvalidType() && (CastExpr != nullptr) && \"ActOnCastExpr(): missing type or expr\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7674, __extension__ __PRETTY_FUNCTION__)) | ||||||||
7674 | "ActOnCastExpr(): missing type or expr")(static_cast <bool> (!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr" ) ? void (0) : __assert_fail ("!D.isInvalidType() && (CastExpr != nullptr) && \"ActOnCastExpr(): missing type or expr\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7674, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7675 | |||||||||
7676 | TypeSourceInfo *castTInfo = GetTypeForDeclaratorCast(D, CastExpr->getType()); | ||||||||
7677 | if (D.isInvalidType()) | ||||||||
7678 | return ExprError(); | ||||||||
7679 | |||||||||
7680 | if (getLangOpts().CPlusPlus) { | ||||||||
7681 | // Check that there are no default arguments (C++ only). | ||||||||
7682 | CheckExtraCXXDefaultArguments(D); | ||||||||
7683 | } else { | ||||||||
7684 | // Make sure any TypoExprs have been dealt with. | ||||||||
7685 | ExprResult Res = CorrectDelayedTyposInExpr(CastExpr); | ||||||||
7686 | if (!Res.isUsable()) | ||||||||
7687 | return ExprError(); | ||||||||
7688 | CastExpr = Res.get(); | ||||||||
7689 | } | ||||||||
7690 | |||||||||
7691 | checkUnusedDeclAttributes(D); | ||||||||
7692 | |||||||||
7693 | QualType castType = castTInfo->getType(); | ||||||||
7694 | Ty = CreateParsedType(castType, castTInfo); | ||||||||
7695 | |||||||||
7696 | bool isVectorLiteral = false; | ||||||||
7697 | |||||||||
7698 | // Check for an altivec or OpenCL literal, | ||||||||
7699 | // i.e. all the elements are integer constants. | ||||||||
7700 | ParenExpr *PE = dyn_cast<ParenExpr>(CastExpr); | ||||||||
7701 | ParenListExpr *PLE = dyn_cast<ParenListExpr>(CastExpr); | ||||||||
7702 | if ((getLangOpts().AltiVec || getLangOpts().ZVector || getLangOpts().OpenCL) | ||||||||
7703 | && castType->isVectorType() && (PE || PLE)) { | ||||||||
7704 | if (PLE && PLE->getNumExprs() == 0) { | ||||||||
7705 | Diag(PLE->getExprLoc(), diag::err_altivec_empty_initializer); | ||||||||
7706 | return ExprError(); | ||||||||
7707 | } | ||||||||
7708 | if (PE || PLE->getNumExprs() == 1) { | ||||||||
7709 | Expr *E = (PE ? PE->getSubExpr() : PLE->getExpr(0)); | ||||||||
7710 | if (!E->isTypeDependent() && !E->getType()->isVectorType()) | ||||||||
7711 | isVectorLiteral = true; | ||||||||
7712 | } | ||||||||
7713 | else | ||||||||
7714 | isVectorLiteral = true; | ||||||||
7715 | } | ||||||||
7716 | |||||||||
7717 | // If this is a vector initializer, '(' type ')' '(' init, ..., init ')' | ||||||||
7718 | // then handle it as such. | ||||||||
7719 | if (isVectorLiteral) | ||||||||
7720 | return BuildVectorLiteral(LParenLoc, RParenLoc, CastExpr, castTInfo); | ||||||||
7721 | |||||||||
7722 | // If the Expr being casted is a ParenListExpr, handle it specially. | ||||||||
7723 | // This is not an AltiVec-style cast, so turn the ParenListExpr into a | ||||||||
7724 | // sequence of BinOp comma operators. | ||||||||
7725 | if (isa<ParenListExpr>(CastExpr)) { | ||||||||
7726 | ExprResult Result = MaybeConvertParenListExprToParenExpr(S, CastExpr); | ||||||||
7727 | if (Result.isInvalid()) return ExprError(); | ||||||||
7728 | CastExpr = Result.get(); | ||||||||
7729 | } | ||||||||
7730 | |||||||||
7731 | if (getLangOpts().CPlusPlus && !castType->isVoidType() && | ||||||||
7732 | !getSourceManager().isInSystemMacro(LParenLoc)) | ||||||||
7733 | Diag(LParenLoc, diag::warn_old_style_cast) << CastExpr->getSourceRange(); | ||||||||
7734 | |||||||||
7735 | CheckTollFreeBridgeCast(castType, CastExpr); | ||||||||
7736 | |||||||||
7737 | CheckObjCBridgeRelatedCast(castType, CastExpr); | ||||||||
7738 | |||||||||
7739 | DiscardMisalignedMemberAddress(castType.getTypePtr(), CastExpr); | ||||||||
7740 | |||||||||
7741 | return BuildCStyleCastExpr(LParenLoc, castTInfo, RParenLoc, CastExpr); | ||||||||
7742 | } | ||||||||
7743 | |||||||||
7744 | ExprResult Sema::BuildVectorLiteral(SourceLocation LParenLoc, | ||||||||
7745 | SourceLocation RParenLoc, Expr *E, | ||||||||
7746 | TypeSourceInfo *TInfo) { | ||||||||
7747 | assert((isa<ParenListExpr>(E) || isa<ParenExpr>(E)) &&(static_cast <bool> ((isa<ParenListExpr>(E) || isa <ParenExpr>(E)) && "Expected paren or paren list expression" ) ? void (0) : __assert_fail ("(isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && \"Expected paren or paren list expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7748, __extension__ __PRETTY_FUNCTION__)) | ||||||||
7748 | "Expected paren or paren list expression")(static_cast <bool> ((isa<ParenListExpr>(E) || isa <ParenExpr>(E)) && "Expected paren or paren list expression" ) ? void (0) : __assert_fail ("(isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && \"Expected paren or paren list expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7748, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7749 | |||||||||
7750 | Expr **exprs; | ||||||||
7751 | unsigned numExprs; | ||||||||
7752 | Expr *subExpr; | ||||||||
7753 | SourceLocation LiteralLParenLoc, LiteralRParenLoc; | ||||||||
7754 | if (ParenListExpr *PE = dyn_cast<ParenListExpr>(E)) { | ||||||||
7755 | LiteralLParenLoc = PE->getLParenLoc(); | ||||||||
7756 | LiteralRParenLoc = PE->getRParenLoc(); | ||||||||
7757 | exprs = PE->getExprs(); | ||||||||
7758 | numExprs = PE->getNumExprs(); | ||||||||
7759 | } else { // isa<ParenExpr> by assertion at function entrance | ||||||||
7760 | LiteralLParenLoc = cast<ParenExpr>(E)->getLParen(); | ||||||||
7761 | LiteralRParenLoc = cast<ParenExpr>(E)->getRParen(); | ||||||||
7762 | subExpr = cast<ParenExpr>(E)->getSubExpr(); | ||||||||
7763 | exprs = &subExpr; | ||||||||
7764 | numExprs = 1; | ||||||||
7765 | } | ||||||||
7766 | |||||||||
7767 | QualType Ty = TInfo->getType(); | ||||||||
7768 | assert(Ty->isVectorType() && "Expected vector type")(static_cast <bool> (Ty->isVectorType() && "Expected vector type" ) ? void (0) : __assert_fail ("Ty->isVectorType() && \"Expected vector type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 7768, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7769 | |||||||||
7770 | SmallVector<Expr *, 8> initExprs; | ||||||||
7771 | const VectorType *VTy = Ty->castAs<VectorType>(); | ||||||||
7772 | unsigned numElems = VTy->getNumElements(); | ||||||||
7773 | |||||||||
7774 | // '(...)' form of vector initialization in AltiVec: the number of | ||||||||
7775 | // initializers must be one or must match the size of the vector. | ||||||||
7776 | // If a single value is specified in the initializer then it will be | ||||||||
7777 | // replicated to all the components of the vector | ||||||||
7778 | if (CheckAltivecInitFromScalar(E->getSourceRange(), Ty, | ||||||||
7779 | VTy->getElementType())) | ||||||||
7780 | return ExprError(); | ||||||||
7781 | if (ShouldSplatAltivecScalarInCast(VTy)) { | ||||||||
7782 | // The number of initializers must be one or must match the size of the | ||||||||
7783 | // vector. If a single value is specified in the initializer then it will | ||||||||
7784 | // be replicated to all the components of the vector | ||||||||
7785 | if (numExprs == 1) { | ||||||||
7786 | QualType ElemTy = VTy->getElementType(); | ||||||||
7787 | ExprResult Literal = DefaultLvalueConversion(exprs[0]); | ||||||||
7788 | if (Literal.isInvalid()) | ||||||||
7789 | return ExprError(); | ||||||||
7790 | Literal = ImpCastExprToType(Literal.get(), ElemTy, | ||||||||
7791 | PrepareScalarCast(Literal, ElemTy)); | ||||||||
7792 | return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); | ||||||||
7793 | } | ||||||||
7794 | else if (numExprs < numElems) { | ||||||||
7795 | Diag(E->getExprLoc(), | ||||||||
7796 | diag::err_incorrect_number_of_vector_initializers); | ||||||||
7797 | return ExprError(); | ||||||||
7798 | } | ||||||||
7799 | else | ||||||||
7800 | initExprs.append(exprs, exprs + numExprs); | ||||||||
7801 | } | ||||||||
7802 | else { | ||||||||
7803 | // For OpenCL, when the number of initializers is a single value, | ||||||||
7804 | // it will be replicated to all components of the vector. | ||||||||
7805 | if (getLangOpts().OpenCL && | ||||||||
7806 | VTy->getVectorKind() == VectorType::GenericVector && | ||||||||
7807 | numExprs == 1) { | ||||||||
7808 | QualType ElemTy = VTy->getElementType(); | ||||||||
7809 | ExprResult Literal = DefaultLvalueConversion(exprs[0]); | ||||||||
7810 | if (Literal.isInvalid()) | ||||||||
7811 | return ExprError(); | ||||||||
7812 | Literal = ImpCastExprToType(Literal.get(), ElemTy, | ||||||||
7813 | PrepareScalarCast(Literal, ElemTy)); | ||||||||
7814 | return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); | ||||||||
7815 | } | ||||||||
7816 | |||||||||
7817 | initExprs.append(exprs, exprs + numExprs); | ||||||||
7818 | } | ||||||||
7819 | // FIXME: This means that pretty-printing the final AST will produce curly | ||||||||
7820 | // braces instead of the original commas. | ||||||||
7821 | InitListExpr *initE = new (Context) InitListExpr(Context, LiteralLParenLoc, | ||||||||
7822 | initExprs, LiteralRParenLoc); | ||||||||
7823 | initE->setType(Ty); | ||||||||
7824 | return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, initE); | ||||||||
7825 | } | ||||||||
7826 | |||||||||
7827 | /// This is not an AltiVec-style cast or or C++ direct-initialization, so turn | ||||||||
7828 | /// the ParenListExpr into a sequence of comma binary operators. | ||||||||
7829 | ExprResult | ||||||||
7830 | Sema::MaybeConvertParenListExprToParenExpr(Scope *S, Expr *OrigExpr) { | ||||||||
7831 | ParenListExpr *E = dyn_cast<ParenListExpr>(OrigExpr); | ||||||||
7832 | if (!E) | ||||||||
7833 | return OrigExpr; | ||||||||
7834 | |||||||||
7835 | ExprResult Result(E->getExpr(0)); | ||||||||
7836 | |||||||||
7837 | for (unsigned i = 1, e = E->getNumExprs(); i != e && !Result.isInvalid(); ++i) | ||||||||
7838 | Result = ActOnBinOp(S, E->getExprLoc(), tok::comma, Result.get(), | ||||||||
7839 | E->getExpr(i)); | ||||||||
7840 | |||||||||
7841 | if (Result.isInvalid()) return ExprError(); | ||||||||
7842 | |||||||||
7843 | return ActOnParenExpr(E->getLParenLoc(), E->getRParenLoc(), Result.get()); | ||||||||
7844 | } | ||||||||
7845 | |||||||||
7846 | ExprResult Sema::ActOnParenListExpr(SourceLocation L, | ||||||||
7847 | SourceLocation R, | ||||||||
7848 | MultiExprArg Val) { | ||||||||
7849 | return ParenListExpr::Create(Context, L, Val, R); | ||||||||
7850 | } | ||||||||
7851 | |||||||||
7852 | /// Emit a specialized diagnostic when one expression is a null pointer | ||||||||
7853 | /// constant and the other is not a pointer. Returns true if a diagnostic is | ||||||||
7854 | /// emitted. | ||||||||
7855 | bool Sema::DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, | ||||||||
7856 | SourceLocation QuestionLoc) { | ||||||||
7857 | Expr *NullExpr = LHSExpr; | ||||||||
7858 | Expr *NonPointerExpr = RHSExpr; | ||||||||
7859 | Expr::NullPointerConstantKind NullKind = | ||||||||
7860 | NullExpr->isNullPointerConstant(Context, | ||||||||
7861 | Expr::NPC_ValueDependentIsNotNull); | ||||||||
7862 | |||||||||
7863 | if (NullKind == Expr::NPCK_NotNull) { | ||||||||
7864 | NullExpr = RHSExpr; | ||||||||
7865 | NonPointerExpr = LHSExpr; | ||||||||
7866 | NullKind = | ||||||||
7867 | NullExpr->isNullPointerConstant(Context, | ||||||||
7868 | Expr::NPC_ValueDependentIsNotNull); | ||||||||
7869 | } | ||||||||
7870 | |||||||||
7871 | if (NullKind == Expr::NPCK_NotNull) | ||||||||
7872 | return false; | ||||||||
7873 | |||||||||
7874 | if (NullKind == Expr::NPCK_ZeroExpression) | ||||||||
7875 | return false; | ||||||||
7876 | |||||||||
7877 | if (NullKind == Expr::NPCK_ZeroLiteral) { | ||||||||
7878 | // In this case, check to make sure that we got here from a "NULL" | ||||||||
7879 | // string in the source code. | ||||||||
7880 | NullExpr = NullExpr->IgnoreParenImpCasts(); | ||||||||
7881 | SourceLocation loc = NullExpr->getExprLoc(); | ||||||||
7882 | if (!findMacroSpelling(loc, "NULL")) | ||||||||
7883 | return false; | ||||||||
7884 | } | ||||||||
7885 | |||||||||
7886 | int DiagType = (NullKind == Expr::NPCK_CXX11_nullptr); | ||||||||
7887 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands_null) | ||||||||
7888 | << NonPointerExpr->getType() << DiagType | ||||||||
7889 | << NonPointerExpr->getSourceRange(); | ||||||||
7890 | return true; | ||||||||
7891 | } | ||||||||
7892 | |||||||||
7893 | /// Return false if the condition expression is valid, true otherwise. | ||||||||
7894 | static bool checkCondition(Sema &S, Expr *Cond, SourceLocation QuestionLoc) { | ||||||||
7895 | QualType CondTy = Cond->getType(); | ||||||||
7896 | |||||||||
7897 | // OpenCL v1.1 s6.3.i says the condition cannot be a floating point type. | ||||||||
7898 | if (S.getLangOpts().OpenCL && CondTy->isFloatingType()) { | ||||||||
7899 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) | ||||||||
7900 | << CondTy << Cond->getSourceRange(); | ||||||||
7901 | return true; | ||||||||
7902 | } | ||||||||
7903 | |||||||||
7904 | // C99 6.5.15p2 | ||||||||
7905 | if (CondTy->isScalarType()) return false; | ||||||||
7906 | |||||||||
7907 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_scalar) | ||||||||
7908 | << CondTy << Cond->getSourceRange(); | ||||||||
7909 | return true; | ||||||||
7910 | } | ||||||||
7911 | |||||||||
7912 | /// Handle when one or both operands are void type. | ||||||||
7913 | static QualType checkConditionalVoidType(Sema &S, ExprResult &LHS, | ||||||||
7914 | ExprResult &RHS) { | ||||||||
7915 | Expr *LHSExpr = LHS.get(); | ||||||||
7916 | Expr *RHSExpr = RHS.get(); | ||||||||
7917 | |||||||||
7918 | if (!LHSExpr->getType()->isVoidType()) | ||||||||
7919 | S.Diag(RHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) | ||||||||
7920 | << RHSExpr->getSourceRange(); | ||||||||
7921 | if (!RHSExpr->getType()->isVoidType()) | ||||||||
7922 | S.Diag(LHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) | ||||||||
7923 | << LHSExpr->getSourceRange(); | ||||||||
7924 | LHS = S.ImpCastExprToType(LHS.get(), S.Context.VoidTy, CK_ToVoid); | ||||||||
7925 | RHS = S.ImpCastExprToType(RHS.get(), S.Context.VoidTy, CK_ToVoid); | ||||||||
7926 | return S.Context.VoidTy; | ||||||||
7927 | } | ||||||||
7928 | |||||||||
7929 | /// Return false if the NullExpr can be promoted to PointerTy, | ||||||||
7930 | /// true otherwise. | ||||||||
7931 | static bool checkConditionalNullPointer(Sema &S, ExprResult &NullExpr, | ||||||||
7932 | QualType PointerTy) { | ||||||||
7933 | if ((!PointerTy->isAnyPointerType() && !PointerTy->isBlockPointerType()) || | ||||||||
7934 | !NullExpr.get()->isNullPointerConstant(S.Context, | ||||||||
7935 | Expr::NPC_ValueDependentIsNull)) | ||||||||
7936 | return true; | ||||||||
7937 | |||||||||
7938 | NullExpr = S.ImpCastExprToType(NullExpr.get(), PointerTy, CK_NullToPointer); | ||||||||
7939 | return false; | ||||||||
7940 | } | ||||||||
7941 | |||||||||
7942 | /// Checks compatibility between two pointers and return the resulting | ||||||||
7943 | /// type. | ||||||||
7944 | static QualType checkConditionalPointerCompatibility(Sema &S, ExprResult &LHS, | ||||||||
7945 | ExprResult &RHS, | ||||||||
7946 | SourceLocation Loc) { | ||||||||
7947 | QualType LHSTy = LHS.get()->getType(); | ||||||||
7948 | QualType RHSTy = RHS.get()->getType(); | ||||||||
7949 | |||||||||
7950 | if (S.Context.hasSameType(LHSTy, RHSTy)) { | ||||||||
7951 | // Two identical pointers types are always compatible. | ||||||||
7952 | return LHSTy; | ||||||||
7953 | } | ||||||||
7954 | |||||||||
7955 | QualType lhptee, rhptee; | ||||||||
7956 | |||||||||
7957 | // Get the pointee types. | ||||||||
7958 | bool IsBlockPointer = false; | ||||||||
7959 | if (const BlockPointerType *LHSBTy = LHSTy->getAs<BlockPointerType>()) { | ||||||||
7960 | lhptee = LHSBTy->getPointeeType(); | ||||||||
7961 | rhptee = RHSTy->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
7962 | IsBlockPointer = true; | ||||||||
7963 | } else { | ||||||||
7964 | lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
7965 | rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
7966 | } | ||||||||
7967 | |||||||||
7968 | // C99 6.5.15p6: If both operands are pointers to compatible types or to | ||||||||
7969 | // differently qualified versions of compatible types, the result type is | ||||||||
7970 | // a pointer to an appropriately qualified version of the composite | ||||||||
7971 | // type. | ||||||||
7972 | |||||||||
7973 | // Only CVR-qualifiers exist in the standard, and the differently-qualified | ||||||||
7974 | // clause doesn't make sense for our extensions. E.g. address space 2 should | ||||||||
7975 | // be incompatible with address space 3: they may live on different devices or | ||||||||
7976 | // anything. | ||||||||
7977 | Qualifiers lhQual = lhptee.getQualifiers(); | ||||||||
7978 | Qualifiers rhQual = rhptee.getQualifiers(); | ||||||||
7979 | |||||||||
7980 | LangAS ResultAddrSpace = LangAS::Default; | ||||||||
7981 | LangAS LAddrSpace = lhQual.getAddressSpace(); | ||||||||
7982 | LangAS RAddrSpace = rhQual.getAddressSpace(); | ||||||||
7983 | |||||||||
7984 | // OpenCL v1.1 s6.5 - Conversion between pointers to distinct address | ||||||||
7985 | // spaces is disallowed. | ||||||||
7986 | if (lhQual.isAddressSpaceSupersetOf(rhQual)) | ||||||||
7987 | ResultAddrSpace = LAddrSpace; | ||||||||
7988 | else if (rhQual.isAddressSpaceSupersetOf(lhQual)) | ||||||||
7989 | ResultAddrSpace = RAddrSpace; | ||||||||
7990 | else { | ||||||||
7991 | S.Diag(Loc, diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||||||
7992 | << LHSTy << RHSTy << 2 << LHS.get()->getSourceRange() | ||||||||
7993 | << RHS.get()->getSourceRange(); | ||||||||
7994 | return QualType(); | ||||||||
7995 | } | ||||||||
7996 | |||||||||
7997 | unsigned MergedCVRQual = lhQual.getCVRQualifiers() | rhQual.getCVRQualifiers(); | ||||||||
7998 | auto LHSCastKind = CK_BitCast, RHSCastKind = CK_BitCast; | ||||||||
7999 | lhQual.removeCVRQualifiers(); | ||||||||
8000 | rhQual.removeCVRQualifiers(); | ||||||||
8001 | |||||||||
8002 | // OpenCL v2.0 specification doesn't extend compatibility of type qualifiers | ||||||||
8003 | // (C99 6.7.3) for address spaces. We assume that the check should behave in | ||||||||
8004 | // the same manner as it's defined for CVR qualifiers, so for OpenCL two | ||||||||
8005 | // qual types are compatible iff | ||||||||
8006 | // * corresponded types are compatible | ||||||||
8007 | // * CVR qualifiers are equal | ||||||||
8008 | // * address spaces are equal | ||||||||
8009 | // Thus for conditional operator we merge CVR and address space unqualified | ||||||||
8010 | // pointees and if there is a composite type we return a pointer to it with | ||||||||
8011 | // merged qualifiers. | ||||||||
8012 | LHSCastKind = | ||||||||
8013 | LAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; | ||||||||
8014 | RHSCastKind = | ||||||||
8015 | RAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; | ||||||||
8016 | lhQual.removeAddressSpace(); | ||||||||
8017 | rhQual.removeAddressSpace(); | ||||||||
8018 | |||||||||
8019 | lhptee = S.Context.getQualifiedType(lhptee.getUnqualifiedType(), lhQual); | ||||||||
8020 | rhptee = S.Context.getQualifiedType(rhptee.getUnqualifiedType(), rhQual); | ||||||||
8021 | |||||||||
8022 | QualType CompositeTy = S.Context.mergeTypes(lhptee, rhptee); | ||||||||
8023 | |||||||||
8024 | if (CompositeTy.isNull()) { | ||||||||
8025 | // In this situation, we assume void* type. No especially good | ||||||||
8026 | // reason, but this is what gcc does, and we do have to pick | ||||||||
8027 | // to get a consistent AST. | ||||||||
8028 | QualType incompatTy; | ||||||||
8029 | incompatTy = S.Context.getPointerType( | ||||||||
8030 | S.Context.getAddrSpaceQualType(S.Context.VoidTy, ResultAddrSpace)); | ||||||||
8031 | LHS = S.ImpCastExprToType(LHS.get(), incompatTy, LHSCastKind); | ||||||||
8032 | RHS = S.ImpCastExprToType(RHS.get(), incompatTy, RHSCastKind); | ||||||||
8033 | |||||||||
8034 | // FIXME: For OpenCL the warning emission and cast to void* leaves a room | ||||||||
8035 | // for casts between types with incompatible address space qualifiers. | ||||||||
8036 | // For the following code the compiler produces casts between global and | ||||||||
8037 | // local address spaces of the corresponded innermost pointees: | ||||||||
8038 | // local int *global *a; | ||||||||
8039 | // global int *global *b; | ||||||||
8040 | // a = (0 ? a : b); // see C99 6.5.16.1.p1. | ||||||||
8041 | S.Diag(Loc, diag::ext_typecheck_cond_incompatible_pointers) | ||||||||
8042 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
8043 | << RHS.get()->getSourceRange(); | ||||||||
8044 | |||||||||
8045 | return incompatTy; | ||||||||
8046 | } | ||||||||
8047 | |||||||||
8048 | // The pointer types are compatible. | ||||||||
8049 | // In case of OpenCL ResultTy should have the address space qualifier | ||||||||
8050 | // which is a superset of address spaces of both the 2nd and the 3rd | ||||||||
8051 | // operands of the conditional operator. | ||||||||
8052 | QualType ResultTy = [&, ResultAddrSpace]() { | ||||||||
8053 | if (S.getLangOpts().OpenCL) { | ||||||||
8054 | Qualifiers CompositeQuals = CompositeTy.getQualifiers(); | ||||||||
8055 | CompositeQuals.setAddressSpace(ResultAddrSpace); | ||||||||
8056 | return S.Context | ||||||||
8057 | .getQualifiedType(CompositeTy.getUnqualifiedType(), CompositeQuals) | ||||||||
8058 | .withCVRQualifiers(MergedCVRQual); | ||||||||
8059 | } | ||||||||
8060 | return CompositeTy.withCVRQualifiers(MergedCVRQual); | ||||||||
8061 | }(); | ||||||||
8062 | if (IsBlockPointer) | ||||||||
8063 | ResultTy = S.Context.getBlockPointerType(ResultTy); | ||||||||
8064 | else | ||||||||
8065 | ResultTy = S.Context.getPointerType(ResultTy); | ||||||||
8066 | |||||||||
8067 | LHS = S.ImpCastExprToType(LHS.get(), ResultTy, LHSCastKind); | ||||||||
8068 | RHS = S.ImpCastExprToType(RHS.get(), ResultTy, RHSCastKind); | ||||||||
8069 | return ResultTy; | ||||||||
8070 | } | ||||||||
8071 | |||||||||
8072 | /// Return the resulting type when the operands are both block pointers. | ||||||||
8073 | static QualType checkConditionalBlockPointerCompatibility(Sema &S, | ||||||||
8074 | ExprResult &LHS, | ||||||||
8075 | ExprResult &RHS, | ||||||||
8076 | SourceLocation Loc) { | ||||||||
8077 | QualType LHSTy = LHS.get()->getType(); | ||||||||
8078 | QualType RHSTy = RHS.get()->getType(); | ||||||||
8079 | |||||||||
8080 | if (!LHSTy->isBlockPointerType() || !RHSTy->isBlockPointerType()) { | ||||||||
8081 | if (LHSTy->isVoidPointerType() || RHSTy->isVoidPointerType()) { | ||||||||
8082 | QualType destType = S.Context.getPointerType(S.Context.VoidTy); | ||||||||
8083 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||||||
8084 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||||||
8085 | return destType; | ||||||||
8086 | } | ||||||||
8087 | S.Diag(Loc, diag::err_typecheck_cond_incompatible_operands) | ||||||||
8088 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
8089 | << RHS.get()->getSourceRange(); | ||||||||
8090 | return QualType(); | ||||||||
8091 | } | ||||||||
8092 | |||||||||
8093 | // We have 2 block pointer types. | ||||||||
8094 | return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); | ||||||||
8095 | } | ||||||||
8096 | |||||||||
8097 | /// Return the resulting type when the operands are both pointers. | ||||||||
8098 | static QualType | ||||||||
8099 | checkConditionalObjectPointersCompatibility(Sema &S, ExprResult &LHS, | ||||||||
8100 | ExprResult &RHS, | ||||||||
8101 | SourceLocation Loc) { | ||||||||
8102 | // get the pointer types | ||||||||
8103 | QualType LHSTy = LHS.get()->getType(); | ||||||||
8104 | QualType RHSTy = RHS.get()->getType(); | ||||||||
8105 | |||||||||
8106 | // get the "pointed to" types | ||||||||
8107 | QualType lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
8108 | QualType rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
8109 | |||||||||
8110 | // ignore qualifiers on void (C99 6.5.15p3, clause 6) | ||||||||
8111 | if (lhptee->isVoidType() && rhptee->isIncompleteOrObjectType()) { | ||||||||
8112 | // Figure out necessary qualifiers (C99 6.5.15p6) | ||||||||
8113 | QualType destPointee | ||||||||
8114 | = S.Context.getQualifiedType(lhptee, rhptee.getQualifiers()); | ||||||||
8115 | QualType destType = S.Context.getPointerType(destPointee); | ||||||||
8116 | // Add qualifiers if necessary. | ||||||||
8117 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_NoOp); | ||||||||
8118 | // Promote to void*. | ||||||||
8119 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||||||
8120 | return destType; | ||||||||
8121 | } | ||||||||
8122 | if (rhptee->isVoidType() && lhptee->isIncompleteOrObjectType()) { | ||||||||
8123 | QualType destPointee | ||||||||
8124 | = S.Context.getQualifiedType(rhptee, lhptee.getQualifiers()); | ||||||||
8125 | QualType destType = S.Context.getPointerType(destPointee); | ||||||||
8126 | // Add qualifiers if necessary. | ||||||||
8127 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_NoOp); | ||||||||
8128 | // Promote to void*. | ||||||||
8129 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||||||
8130 | return destType; | ||||||||
8131 | } | ||||||||
8132 | |||||||||
8133 | return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); | ||||||||
8134 | } | ||||||||
8135 | |||||||||
8136 | /// Return false if the first expression is not an integer and the second | ||||||||
8137 | /// expression is not a pointer, true otherwise. | ||||||||
8138 | static bool checkPointerIntegerMismatch(Sema &S, ExprResult &Int, | ||||||||
8139 | Expr* PointerExpr, SourceLocation Loc, | ||||||||
8140 | bool IsIntFirstExpr) { | ||||||||
8141 | if (!PointerExpr->getType()->isPointerType() || | ||||||||
8142 | !Int.get()->getType()->isIntegerType()) | ||||||||
8143 | return false; | ||||||||
8144 | |||||||||
8145 | Expr *Expr1 = IsIntFirstExpr ? Int.get() : PointerExpr; | ||||||||
8146 | Expr *Expr2 = IsIntFirstExpr ? PointerExpr : Int.get(); | ||||||||
8147 | |||||||||
8148 | S.Diag(Loc, diag::ext_typecheck_cond_pointer_integer_mismatch) | ||||||||
8149 | << Expr1->getType() << Expr2->getType() | ||||||||
8150 | << Expr1->getSourceRange() << Expr2->getSourceRange(); | ||||||||
8151 | Int = S.ImpCastExprToType(Int.get(), PointerExpr->getType(), | ||||||||
8152 | CK_IntegralToPointer); | ||||||||
8153 | return true; | ||||||||
8154 | } | ||||||||
8155 | |||||||||
8156 | /// Simple conversion between integer and floating point types. | ||||||||
8157 | /// | ||||||||
8158 | /// Used when handling the OpenCL conditional operator where the | ||||||||
8159 | /// condition is a vector while the other operands are scalar. | ||||||||
8160 | /// | ||||||||
8161 | /// OpenCL v1.1 s6.3.i and s6.11.6 together require that the scalar | ||||||||
8162 | /// types are either integer or floating type. Between the two | ||||||||
8163 | /// operands, the type with the higher rank is defined as the "result | ||||||||
8164 | /// type". The other operand needs to be promoted to the same type. No | ||||||||
8165 | /// other type promotion is allowed. We cannot use | ||||||||
8166 | /// UsualArithmeticConversions() for this purpose, since it always | ||||||||
8167 | /// promotes promotable types. | ||||||||
8168 | static QualType OpenCLArithmeticConversions(Sema &S, ExprResult &LHS, | ||||||||
8169 | ExprResult &RHS, | ||||||||
8170 | SourceLocation QuestionLoc) { | ||||||||
8171 | LHS = S.DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
8172 | if (LHS.isInvalid()) | ||||||||
8173 | return QualType(); | ||||||||
8174 | RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
8175 | if (RHS.isInvalid()) | ||||||||
8176 | return QualType(); | ||||||||
8177 | |||||||||
8178 | // For conversion purposes, we ignore any qualifiers. | ||||||||
8179 | // For example, "const float" and "float" are equivalent. | ||||||||
8180 | QualType LHSType = | ||||||||
8181 | S.Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); | ||||||||
8182 | QualType RHSType = | ||||||||
8183 | S.Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); | ||||||||
8184 | |||||||||
8185 | if (!LHSType->isIntegerType() && !LHSType->isRealFloatingType()) { | ||||||||
8186 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) | ||||||||
8187 | << LHSType << LHS.get()->getSourceRange(); | ||||||||
8188 | return QualType(); | ||||||||
8189 | } | ||||||||
8190 | |||||||||
8191 | if (!RHSType->isIntegerType() && !RHSType->isRealFloatingType()) { | ||||||||
8192 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) | ||||||||
8193 | << RHSType << RHS.get()->getSourceRange(); | ||||||||
8194 | return QualType(); | ||||||||
8195 | } | ||||||||
8196 | |||||||||
8197 | // If both types are identical, no conversion is needed. | ||||||||
8198 | if (LHSType == RHSType) | ||||||||
8199 | return LHSType; | ||||||||
8200 | |||||||||
8201 | // Now handle "real" floating types (i.e. float, double, long double). | ||||||||
8202 | if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) | ||||||||
8203 | return handleFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||||||
8204 | /*IsCompAssign = */ false); | ||||||||
8205 | |||||||||
8206 | // Finally, we have two differing integer types. | ||||||||
8207 | return handleIntegerConversion<doIntegralCast, doIntegralCast> | ||||||||
8208 | (S, LHS, RHS, LHSType, RHSType, /*IsCompAssign = */ false); | ||||||||
8209 | } | ||||||||
8210 | |||||||||
8211 | /// Convert scalar operands to a vector that matches the | ||||||||
8212 | /// condition in length. | ||||||||
8213 | /// | ||||||||
8214 | /// Used when handling the OpenCL conditional operator where the | ||||||||
8215 | /// condition is a vector while the other operands are scalar. | ||||||||
8216 | /// | ||||||||
8217 | /// We first compute the "result type" for the scalar operands | ||||||||
8218 | /// according to OpenCL v1.1 s6.3.i. Both operands are then converted | ||||||||
8219 | /// into a vector of that type where the length matches the condition | ||||||||
8220 | /// vector type. s6.11.6 requires that the element types of the result | ||||||||
8221 | /// and the condition must have the same number of bits. | ||||||||
8222 | static QualType | ||||||||
8223 | OpenCLConvertScalarsToVectors(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
8224 | QualType CondTy, SourceLocation QuestionLoc) { | ||||||||
8225 | QualType ResTy = OpenCLArithmeticConversions(S, LHS, RHS, QuestionLoc); | ||||||||
8226 | if (ResTy.isNull()) return QualType(); | ||||||||
8227 | |||||||||
8228 | const VectorType *CV = CondTy->getAs<VectorType>(); | ||||||||
8229 | assert(CV)(static_cast <bool> (CV) ? void (0) : __assert_fail ("CV" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8229, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8230 | |||||||||
8231 | // Determine the vector result type | ||||||||
8232 | unsigned NumElements = CV->getNumElements(); | ||||||||
8233 | QualType VectorTy = S.Context.getExtVectorType(ResTy, NumElements); | ||||||||
8234 | |||||||||
8235 | // Ensure that all types have the same number of bits | ||||||||
8236 | if (S.Context.getTypeSize(CV->getElementType()) | ||||||||
8237 | != S.Context.getTypeSize(ResTy)) { | ||||||||
8238 | // Since VectorTy is created internally, it does not pretty print | ||||||||
8239 | // with an OpenCL name. Instead, we just print a description. | ||||||||
8240 | std::string EleTyName = ResTy.getUnqualifiedType().getAsString(); | ||||||||
8241 | SmallString<64> Str; | ||||||||
8242 | llvm::raw_svector_ostream OS(Str); | ||||||||
8243 | OS << "(vector of " << NumElements << " '" << EleTyName << "' values)"; | ||||||||
8244 | S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) | ||||||||
8245 | << CondTy << OS.str(); | ||||||||
8246 | return QualType(); | ||||||||
8247 | } | ||||||||
8248 | |||||||||
8249 | // Convert operands to the vector result type | ||||||||
8250 | LHS = S.ImpCastExprToType(LHS.get(), VectorTy, CK_VectorSplat); | ||||||||
8251 | RHS = S.ImpCastExprToType(RHS.get(), VectorTy, CK_VectorSplat); | ||||||||
8252 | |||||||||
8253 | return VectorTy; | ||||||||
8254 | } | ||||||||
8255 | |||||||||
8256 | /// Return false if this is a valid OpenCL condition vector | ||||||||
8257 | static bool checkOpenCLConditionVector(Sema &S, Expr *Cond, | ||||||||
8258 | SourceLocation QuestionLoc) { | ||||||||
8259 | // OpenCL v1.1 s6.11.6 says the elements of the vector must be of | ||||||||
8260 | // integral type. | ||||||||
8261 | const VectorType *CondTy = Cond->getType()->getAs<VectorType>(); | ||||||||
8262 | assert(CondTy)(static_cast <bool> (CondTy) ? void (0) : __assert_fail ("CondTy", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8262, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8263 | QualType EleTy = CondTy->getElementType(); | ||||||||
8264 | if (EleTy->isIntegerType()) return false; | ||||||||
8265 | |||||||||
8266 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) | ||||||||
8267 | << Cond->getType() << Cond->getSourceRange(); | ||||||||
8268 | return true; | ||||||||
8269 | } | ||||||||
8270 | |||||||||
8271 | /// Return false if the vector condition type and the vector | ||||||||
8272 | /// result type are compatible. | ||||||||
8273 | /// | ||||||||
8274 | /// OpenCL v1.1 s6.11.6 requires that both vector types have the same | ||||||||
8275 | /// number of elements, and their element types have the same number | ||||||||
8276 | /// of bits. | ||||||||
8277 | static bool checkVectorResult(Sema &S, QualType CondTy, QualType VecResTy, | ||||||||
8278 | SourceLocation QuestionLoc) { | ||||||||
8279 | const VectorType *CV = CondTy->getAs<VectorType>(); | ||||||||
8280 | const VectorType *RV = VecResTy->getAs<VectorType>(); | ||||||||
8281 | assert(CV && RV)(static_cast <bool> (CV && RV) ? void (0) : __assert_fail ("CV && RV", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8281, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8282 | |||||||||
8283 | if (CV->getNumElements() != RV->getNumElements()) { | ||||||||
8284 | S.Diag(QuestionLoc, diag::err_conditional_vector_size) | ||||||||
8285 | << CondTy << VecResTy; | ||||||||
8286 | return true; | ||||||||
8287 | } | ||||||||
8288 | |||||||||
8289 | QualType CVE = CV->getElementType(); | ||||||||
8290 | QualType RVE = RV->getElementType(); | ||||||||
8291 | |||||||||
8292 | if (S.Context.getTypeSize(CVE) != S.Context.getTypeSize(RVE)) { | ||||||||
8293 | S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) | ||||||||
8294 | << CondTy << VecResTy; | ||||||||
8295 | return true; | ||||||||
8296 | } | ||||||||
8297 | |||||||||
8298 | return false; | ||||||||
8299 | } | ||||||||
8300 | |||||||||
8301 | /// Return the resulting type for the conditional operator in | ||||||||
8302 | /// OpenCL (aka "ternary selection operator", OpenCL v1.1 | ||||||||
8303 | /// s6.3.i) when the condition is a vector type. | ||||||||
8304 | static QualType | ||||||||
8305 | OpenCLCheckVectorConditional(Sema &S, ExprResult &Cond, | ||||||||
8306 | ExprResult &LHS, ExprResult &RHS, | ||||||||
8307 | SourceLocation QuestionLoc) { | ||||||||
8308 | Cond = S.DefaultFunctionArrayLvalueConversion(Cond.get()); | ||||||||
8309 | if (Cond.isInvalid()) | ||||||||
8310 | return QualType(); | ||||||||
8311 | QualType CondTy = Cond.get()->getType(); | ||||||||
8312 | |||||||||
8313 | if (checkOpenCLConditionVector(S, Cond.get(), QuestionLoc)) | ||||||||
8314 | return QualType(); | ||||||||
8315 | |||||||||
8316 | // If either operand is a vector then find the vector type of the | ||||||||
8317 | // result as specified in OpenCL v1.1 s6.3.i. | ||||||||
8318 | if (LHS.get()->getType()->isVectorType() || | ||||||||
8319 | RHS.get()->getType()->isVectorType()) { | ||||||||
8320 | QualType VecResTy = S.CheckVectorOperands(LHS, RHS, QuestionLoc, | ||||||||
8321 | /*isCompAssign*/false, | ||||||||
8322 | /*AllowBothBool*/true, | ||||||||
8323 | /*AllowBoolConversions*/false); | ||||||||
8324 | if (VecResTy.isNull()) return QualType(); | ||||||||
8325 | // The result type must match the condition type as specified in | ||||||||
8326 | // OpenCL v1.1 s6.11.6. | ||||||||
8327 | if (checkVectorResult(S, CondTy, VecResTy, QuestionLoc)) | ||||||||
8328 | return QualType(); | ||||||||
8329 | return VecResTy; | ||||||||
8330 | } | ||||||||
8331 | |||||||||
8332 | // Both operands are scalar. | ||||||||
8333 | return OpenCLConvertScalarsToVectors(S, LHS, RHS, CondTy, QuestionLoc); | ||||||||
8334 | } | ||||||||
8335 | |||||||||
8336 | /// Return true if the Expr is block type | ||||||||
8337 | static bool checkBlockType(Sema &S, const Expr *E) { | ||||||||
8338 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { | ||||||||
8339 | QualType Ty = CE->getCallee()->getType(); | ||||||||
8340 | if (Ty->isBlockPointerType()) { | ||||||||
8341 | S.Diag(E->getExprLoc(), diag::err_opencl_ternary_with_block); | ||||||||
8342 | return true; | ||||||||
8343 | } | ||||||||
8344 | } | ||||||||
8345 | return false; | ||||||||
8346 | } | ||||||||
8347 | |||||||||
8348 | /// Note that LHS is not null here, even if this is the gnu "x ?: y" extension. | ||||||||
8349 | /// In that case, LHS = cond. | ||||||||
8350 | /// C99 6.5.15 | ||||||||
8351 | QualType Sema::CheckConditionalOperands(ExprResult &Cond, ExprResult &LHS, | ||||||||
8352 | ExprResult &RHS, ExprValueKind &VK, | ||||||||
8353 | ExprObjectKind &OK, | ||||||||
8354 | SourceLocation QuestionLoc) { | ||||||||
8355 | |||||||||
8356 | ExprResult LHSResult = CheckPlaceholderExpr(LHS.get()); | ||||||||
8357 | if (!LHSResult.isUsable()) return QualType(); | ||||||||
8358 | LHS = LHSResult; | ||||||||
8359 | |||||||||
8360 | ExprResult RHSResult = CheckPlaceholderExpr(RHS.get()); | ||||||||
8361 | if (!RHSResult.isUsable()) return QualType(); | ||||||||
8362 | RHS = RHSResult; | ||||||||
8363 | |||||||||
8364 | // C++ is sufficiently different to merit its own checker. | ||||||||
8365 | if (getLangOpts().CPlusPlus) | ||||||||
8366 | return CXXCheckConditionalOperands(Cond, LHS, RHS, VK, OK, QuestionLoc); | ||||||||
8367 | |||||||||
8368 | VK = VK_PRValue; | ||||||||
8369 | OK = OK_Ordinary; | ||||||||
8370 | |||||||||
8371 | if (Context.isDependenceAllowed() && | ||||||||
8372 | (Cond.get()->isTypeDependent() || LHS.get()->isTypeDependent() || | ||||||||
8373 | RHS.get()->isTypeDependent())) { | ||||||||
8374 | assert(!getLangOpts().CPlusPlus)(static_cast <bool> (!getLangOpts().CPlusPlus) ? void ( 0) : __assert_fail ("!getLangOpts().CPlusPlus", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8374, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8375 | assert((Cond.get()->containsErrors() || LHS.get()->containsErrors() ||(static_cast <bool> ((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors ()) && "should only occur in error-recovery path.") ? void (0) : __assert_fail ("(Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8377, __extension__ __PRETTY_FUNCTION__)) | ||||||||
8376 | RHS.get()->containsErrors()) &&(static_cast <bool> ((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors ()) && "should only occur in error-recovery path.") ? void (0) : __assert_fail ("(Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8377, __extension__ __PRETTY_FUNCTION__)) | ||||||||
8377 | "should only occur in error-recovery path.")(static_cast <bool> ((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors ()) && "should only occur in error-recovery path.") ? void (0) : __assert_fail ("(Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && \"should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8377, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8378 | return Context.DependentTy; | ||||||||
8379 | } | ||||||||
8380 | |||||||||
8381 | // The OpenCL operator with a vector condition is sufficiently | ||||||||
8382 | // different to merit its own checker. | ||||||||
8383 | if ((getLangOpts().OpenCL && Cond.get()->getType()->isVectorType()) || | ||||||||
8384 | Cond.get()->getType()->isExtVectorType()) | ||||||||
8385 | return OpenCLCheckVectorConditional(*this, Cond, LHS, RHS, QuestionLoc); | ||||||||
8386 | |||||||||
8387 | // First, check the condition. | ||||||||
8388 | Cond = UsualUnaryConversions(Cond.get()); | ||||||||
8389 | if (Cond.isInvalid()) | ||||||||
8390 | return QualType(); | ||||||||
8391 | if (checkCondition(*this, Cond.get(), QuestionLoc)) | ||||||||
8392 | return QualType(); | ||||||||
8393 | |||||||||
8394 | // Now check the two expressions. | ||||||||
8395 | if (LHS.get()->getType()->isVectorType() || | ||||||||
8396 | RHS.get()->getType()->isVectorType()) | ||||||||
8397 | return CheckVectorOperands(LHS, RHS, QuestionLoc, /*isCompAssign*/false, | ||||||||
8398 | /*AllowBothBool*/true, | ||||||||
8399 | /*AllowBoolConversions*/false); | ||||||||
8400 | |||||||||
8401 | QualType ResTy = | ||||||||
8402 | UsualArithmeticConversions(LHS, RHS, QuestionLoc, ACK_Conditional); | ||||||||
8403 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
8404 | return QualType(); | ||||||||
8405 | |||||||||
8406 | QualType LHSTy = LHS.get()->getType(); | ||||||||
8407 | QualType RHSTy = RHS.get()->getType(); | ||||||||
8408 | |||||||||
8409 | // Diagnose attempts to convert between __float128 and long double where | ||||||||
8410 | // such conversions currently can't be handled. | ||||||||
8411 | if (unsupportedTypeConversion(*this, LHSTy, RHSTy)) { | ||||||||
8412 | Diag(QuestionLoc, | ||||||||
8413 | diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy | ||||||||
8414 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
8415 | return QualType(); | ||||||||
8416 | } | ||||||||
8417 | |||||||||
8418 | // OpenCL v2.0 s6.12.5 - Blocks cannot be used as expressions of the ternary | ||||||||
8419 | // selection operator (?:). | ||||||||
8420 | if (getLangOpts().OpenCL && | ||||||||
8421 | (checkBlockType(*this, LHS.get()) | checkBlockType(*this, RHS.get()))) { | ||||||||
8422 | return QualType(); | ||||||||
8423 | } | ||||||||
8424 | |||||||||
8425 | // If both operands have arithmetic type, do the usual arithmetic conversions | ||||||||
8426 | // to find a common type: C99 6.5.15p3,5. | ||||||||
8427 | if (LHSTy->isArithmeticType() && RHSTy->isArithmeticType()) { | ||||||||
8428 | // Disallow invalid arithmetic conversions, such as those between ExtInts of | ||||||||
8429 | // different sizes, or between ExtInts and other types. | ||||||||
8430 | if (ResTy.isNull() && (LHSTy->isExtIntType() || RHSTy->isExtIntType())) { | ||||||||
8431 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) | ||||||||
8432 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
8433 | << RHS.get()->getSourceRange(); | ||||||||
8434 | return QualType(); | ||||||||
8435 | } | ||||||||
8436 | |||||||||
8437 | LHS = ImpCastExprToType(LHS.get(), ResTy, PrepareScalarCast(LHS, ResTy)); | ||||||||
8438 | RHS = ImpCastExprToType(RHS.get(), ResTy, PrepareScalarCast(RHS, ResTy)); | ||||||||
8439 | |||||||||
8440 | return ResTy; | ||||||||
8441 | } | ||||||||
8442 | |||||||||
8443 | // And if they're both bfloat (which isn't arithmetic), that's fine too. | ||||||||
8444 | if (LHSTy->isBFloat16Type() && RHSTy->isBFloat16Type()) { | ||||||||
8445 | return LHSTy; | ||||||||
8446 | } | ||||||||
8447 | |||||||||
8448 | // If both operands are the same structure or union type, the result is that | ||||||||
8449 | // type. | ||||||||
8450 | if (const RecordType *LHSRT = LHSTy->getAs<RecordType>()) { // C99 6.5.15p3 | ||||||||
8451 | if (const RecordType *RHSRT = RHSTy->getAs<RecordType>()) | ||||||||
8452 | if (LHSRT->getDecl() == RHSRT->getDecl()) | ||||||||
8453 | // "If both the operands have structure or union type, the result has | ||||||||
8454 | // that type." This implies that CV qualifiers are dropped. | ||||||||
8455 | return LHSTy.getUnqualifiedType(); | ||||||||
8456 | // FIXME: Type of conditional expression must be complete in C mode. | ||||||||
8457 | } | ||||||||
8458 | |||||||||
8459 | // C99 6.5.15p5: "If both operands have void type, the result has void type." | ||||||||
8460 | // The following || allows only one side to be void (a GCC-ism). | ||||||||
8461 | if (LHSTy->isVoidType() || RHSTy->isVoidType()) { | ||||||||
8462 | return checkConditionalVoidType(*this, LHS, RHS); | ||||||||
8463 | } | ||||||||
8464 | |||||||||
8465 | // C99 6.5.15p6 - "if one operand is a null pointer constant, the result has | ||||||||
8466 | // the type of the other operand." | ||||||||
8467 | if (!checkConditionalNullPointer(*this, RHS, LHSTy)) return LHSTy; | ||||||||
8468 | if (!checkConditionalNullPointer(*this, LHS, RHSTy)) return RHSTy; | ||||||||
8469 | |||||||||
8470 | // All objective-c pointer type analysis is done here. | ||||||||
8471 | QualType compositeType = FindCompositeObjCPointerType(LHS, RHS, | ||||||||
8472 | QuestionLoc); | ||||||||
8473 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
8474 | return QualType(); | ||||||||
8475 | if (!compositeType.isNull()) | ||||||||
8476 | return compositeType; | ||||||||
8477 | |||||||||
8478 | |||||||||
8479 | // Handle block pointer types. | ||||||||
8480 | if (LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) | ||||||||
8481 | return checkConditionalBlockPointerCompatibility(*this, LHS, RHS, | ||||||||
8482 | QuestionLoc); | ||||||||
8483 | |||||||||
8484 | // Check constraints for C object pointers types (C99 6.5.15p3,6). | ||||||||
8485 | if (LHSTy->isPointerType() && RHSTy->isPointerType()) | ||||||||
8486 | return checkConditionalObjectPointersCompatibility(*this, LHS, RHS, | ||||||||
8487 | QuestionLoc); | ||||||||
8488 | |||||||||
8489 | // GCC compatibility: soften pointer/integer mismatch. Note that | ||||||||
8490 | // null pointers have been filtered out by this point. | ||||||||
8491 | if (checkPointerIntegerMismatch(*this, LHS, RHS.get(), QuestionLoc, | ||||||||
8492 | /*IsIntFirstExpr=*/true)) | ||||||||
8493 | return RHSTy; | ||||||||
8494 | if (checkPointerIntegerMismatch(*this, RHS, LHS.get(), QuestionLoc, | ||||||||
8495 | /*IsIntFirstExpr=*/false)) | ||||||||
8496 | return LHSTy; | ||||||||
8497 | |||||||||
8498 | // Allow ?: operations in which both operands have the same | ||||||||
8499 | // built-in sizeless type. | ||||||||
8500 | if (LHSTy->isSizelessBuiltinType() && Context.hasSameType(LHSTy, RHSTy)) | ||||||||
8501 | return LHSTy; | ||||||||
8502 | |||||||||
8503 | // Emit a better diagnostic if one of the expressions is a null pointer | ||||||||
8504 | // constant and the other is not a pointer type. In this case, the user most | ||||||||
8505 | // likely forgot to take the address of the other expression. | ||||||||
8506 | if (DiagnoseConditionalForNull(LHS.get(), RHS.get(), QuestionLoc)) | ||||||||
8507 | return QualType(); | ||||||||
8508 | |||||||||
8509 | // Otherwise, the operands are not compatible. | ||||||||
8510 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) | ||||||||
8511 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
8512 | << RHS.get()->getSourceRange(); | ||||||||
8513 | return QualType(); | ||||||||
8514 | } | ||||||||
8515 | |||||||||
8516 | /// FindCompositeObjCPointerType - Helper method to find composite type of | ||||||||
8517 | /// two objective-c pointer types of the two input expressions. | ||||||||
8518 | QualType Sema::FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, | ||||||||
8519 | SourceLocation QuestionLoc) { | ||||||||
8520 | QualType LHSTy = LHS.get()->getType(); | ||||||||
8521 | QualType RHSTy = RHS.get()->getType(); | ||||||||
8522 | |||||||||
8523 | // Handle things like Class and struct objc_class*. Here we case the result | ||||||||
8524 | // to the pseudo-builtin, because that will be implicitly cast back to the | ||||||||
8525 | // redefinition type if an attempt is made to access its fields. | ||||||||
8526 | if (LHSTy->isObjCClassType() && | ||||||||
8527 | (Context.hasSameType(RHSTy, Context.getObjCClassRedefinitionType()))) { | ||||||||
8528 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); | ||||||||
8529 | return LHSTy; | ||||||||
8530 | } | ||||||||
8531 | if (RHSTy->isObjCClassType() && | ||||||||
8532 | (Context.hasSameType(LHSTy, Context.getObjCClassRedefinitionType()))) { | ||||||||
8533 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); | ||||||||
8534 | return RHSTy; | ||||||||
8535 | } | ||||||||
8536 | // And the same for struct objc_object* / id | ||||||||
8537 | if (LHSTy->isObjCIdType() && | ||||||||
8538 | (Context.hasSameType(RHSTy, Context.getObjCIdRedefinitionType()))) { | ||||||||
8539 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); | ||||||||
8540 | return LHSTy; | ||||||||
8541 | } | ||||||||
8542 | if (RHSTy->isObjCIdType() && | ||||||||
8543 | (Context.hasSameType(LHSTy, Context.getObjCIdRedefinitionType()))) { | ||||||||
8544 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); | ||||||||
8545 | return RHSTy; | ||||||||
8546 | } | ||||||||
8547 | // And the same for struct objc_selector* / SEL | ||||||||
8548 | if (Context.isObjCSelType(LHSTy) && | ||||||||
8549 | (Context.hasSameType(RHSTy, Context.getObjCSelRedefinitionType()))) { | ||||||||
8550 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_BitCast); | ||||||||
8551 | return LHSTy; | ||||||||
8552 | } | ||||||||
8553 | if (Context.isObjCSelType(RHSTy) && | ||||||||
8554 | (Context.hasSameType(LHSTy, Context.getObjCSelRedefinitionType()))) { | ||||||||
8555 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_BitCast); | ||||||||
8556 | return RHSTy; | ||||||||
8557 | } | ||||||||
8558 | // Check constraints for Objective-C object pointers types. | ||||||||
8559 | if (LHSTy->isObjCObjectPointerType() && RHSTy->isObjCObjectPointerType()) { | ||||||||
8560 | |||||||||
8561 | if (Context.getCanonicalType(LHSTy) == Context.getCanonicalType(RHSTy)) { | ||||||||
8562 | // Two identical object pointer types are always compatible. | ||||||||
8563 | return LHSTy; | ||||||||
8564 | } | ||||||||
8565 | const ObjCObjectPointerType *LHSOPT = LHSTy->castAs<ObjCObjectPointerType>(); | ||||||||
8566 | const ObjCObjectPointerType *RHSOPT = RHSTy->castAs<ObjCObjectPointerType>(); | ||||||||
8567 | QualType compositeType = LHSTy; | ||||||||
8568 | |||||||||
8569 | // If both operands are interfaces and either operand can be | ||||||||
8570 | // assigned to the other, use that type as the composite | ||||||||
8571 | // type. This allows | ||||||||
8572 | // xxx ? (A*) a : (B*) b | ||||||||
8573 | // where B is a subclass of A. | ||||||||
8574 | // | ||||||||
8575 | // Additionally, as for assignment, if either type is 'id' | ||||||||
8576 | // allow silent coercion. Finally, if the types are | ||||||||
8577 | // incompatible then make sure to use 'id' as the composite | ||||||||
8578 | // type so the result is acceptable for sending messages to. | ||||||||
8579 | |||||||||
8580 | // FIXME: Consider unifying with 'areComparableObjCPointerTypes'. | ||||||||
8581 | // It could return the composite type. | ||||||||
8582 | if (!(compositeType = | ||||||||
8583 | Context.areCommonBaseCompatible(LHSOPT, RHSOPT)).isNull()) { | ||||||||
8584 | // Nothing more to do. | ||||||||
8585 | } else if (Context.canAssignObjCInterfaces(LHSOPT, RHSOPT)) { | ||||||||
8586 | compositeType = RHSOPT->isObjCBuiltinType() ? RHSTy : LHSTy; | ||||||||
8587 | } else if (Context.canAssignObjCInterfaces(RHSOPT, LHSOPT)) { | ||||||||
8588 | compositeType = LHSOPT->isObjCBuiltinType() ? LHSTy : RHSTy; | ||||||||
8589 | } else if ((LHSOPT->isObjCQualifiedIdType() || | ||||||||
8590 | RHSOPT->isObjCQualifiedIdType()) && | ||||||||
8591 | Context.ObjCQualifiedIdTypesAreCompatible(LHSOPT, RHSOPT, | ||||||||
8592 | true)) { | ||||||||
8593 | // Need to handle "id<xx>" explicitly. | ||||||||
8594 | // GCC allows qualified id and any Objective-C type to devolve to | ||||||||
8595 | // id. Currently localizing to here until clear this should be | ||||||||
8596 | // part of ObjCQualifiedIdTypesAreCompatible. | ||||||||
8597 | compositeType = Context.getObjCIdType(); | ||||||||
8598 | } else if (LHSTy->isObjCIdType() || RHSTy->isObjCIdType()) { | ||||||||
8599 | compositeType = Context.getObjCIdType(); | ||||||||
8600 | } else { | ||||||||
8601 | Diag(QuestionLoc, diag::ext_typecheck_cond_incompatible_operands) | ||||||||
8602 | << LHSTy << RHSTy | ||||||||
8603 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
8604 | QualType incompatTy = Context.getObjCIdType(); | ||||||||
8605 | LHS = ImpCastExprToType(LHS.get(), incompatTy, CK_BitCast); | ||||||||
8606 | RHS = ImpCastExprToType(RHS.get(), incompatTy, CK_BitCast); | ||||||||
8607 | return incompatTy; | ||||||||
8608 | } | ||||||||
8609 | // The object pointer types are compatible. | ||||||||
8610 | LHS = ImpCastExprToType(LHS.get(), compositeType, CK_BitCast); | ||||||||
8611 | RHS = ImpCastExprToType(RHS.get(), compositeType, CK_BitCast); | ||||||||
8612 | return compositeType; | ||||||||
8613 | } | ||||||||
8614 | // Check Objective-C object pointer types and 'void *' | ||||||||
8615 | if (LHSTy->isVoidPointerType() && RHSTy->isObjCObjectPointerType()) { | ||||||||
8616 | if (getLangOpts().ObjCAutoRefCount) { | ||||||||
8617 | // ARC forbids the implicit conversion of object pointers to 'void *', | ||||||||
8618 | // so these types are not compatible. | ||||||||
8619 | Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy | ||||||||
8620 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
8621 | LHS = RHS = true; | ||||||||
8622 | return QualType(); | ||||||||
8623 | } | ||||||||
8624 | QualType lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
8625 | QualType rhptee = RHSTy->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
8626 | QualType destPointee | ||||||||
8627 | = Context.getQualifiedType(lhptee, rhptee.getQualifiers()); | ||||||||
8628 | QualType destType = Context.getPointerType(destPointee); | ||||||||
8629 | // Add qualifiers if necessary. | ||||||||
8630 | LHS = ImpCastExprToType(LHS.get(), destType, CK_NoOp); | ||||||||
8631 | // Promote to void*. | ||||||||
8632 | RHS = ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||||||
8633 | return destType; | ||||||||
8634 | } | ||||||||
8635 | if (LHSTy->isObjCObjectPointerType() && RHSTy->isVoidPointerType()) { | ||||||||
8636 | if (getLangOpts().ObjCAutoRefCount) { | ||||||||
8637 | // ARC forbids the implicit conversion of object pointers to 'void *', | ||||||||
8638 | // so these types are not compatible. | ||||||||
8639 | Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy | ||||||||
8640 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
8641 | LHS = RHS = true; | ||||||||
8642 | return QualType(); | ||||||||
8643 | } | ||||||||
8644 | QualType lhptee = LHSTy->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
8645 | QualType rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
8646 | QualType destPointee | ||||||||
8647 | = Context.getQualifiedType(rhptee, lhptee.getQualifiers()); | ||||||||
8648 | QualType destType = Context.getPointerType(destPointee); | ||||||||
8649 | // Add qualifiers if necessary. | ||||||||
8650 | RHS = ImpCastExprToType(RHS.get(), destType, CK_NoOp); | ||||||||
8651 | // Promote to void*. | ||||||||
8652 | LHS = ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||||||
8653 | return destType; | ||||||||
8654 | } | ||||||||
8655 | return QualType(); | ||||||||
8656 | } | ||||||||
8657 | |||||||||
8658 | /// SuggestParentheses - Emit a note with a fixit hint that wraps | ||||||||
8659 | /// ParenRange in parentheses. | ||||||||
8660 | static void SuggestParentheses(Sema &Self, SourceLocation Loc, | ||||||||
8661 | const PartialDiagnostic &Note, | ||||||||
8662 | SourceRange ParenRange) { | ||||||||
8663 | SourceLocation EndLoc = Self.getLocForEndOfToken(ParenRange.getEnd()); | ||||||||
8664 | if (ParenRange.getBegin().isFileID() && ParenRange.getEnd().isFileID() && | ||||||||
8665 | EndLoc.isValid()) { | ||||||||
8666 | Self.Diag(Loc, Note) | ||||||||
8667 | << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") | ||||||||
8668 | << FixItHint::CreateInsertion(EndLoc, ")"); | ||||||||
8669 | } else { | ||||||||
8670 | // We can't display the parentheses, so just show the bare note. | ||||||||
8671 | Self.Diag(Loc, Note) << ParenRange; | ||||||||
8672 | } | ||||||||
8673 | } | ||||||||
8674 | |||||||||
8675 | static bool IsArithmeticOp(BinaryOperatorKind Opc) { | ||||||||
8676 | return BinaryOperator::isAdditiveOp(Opc) || | ||||||||
8677 | BinaryOperator::isMultiplicativeOp(Opc) || | ||||||||
8678 | BinaryOperator::isShiftOp(Opc) || Opc == BO_And || Opc == BO_Or; | ||||||||
8679 | // This only checks for bitwise-or and bitwise-and, but not bitwise-xor and | ||||||||
8680 | // not any of the logical operators. Bitwise-xor is commonly used as a | ||||||||
8681 | // logical-xor because there is no logical-xor operator. The logical | ||||||||
8682 | // operators, including uses of xor, have a high false positive rate for | ||||||||
8683 | // precedence warnings. | ||||||||
8684 | } | ||||||||
8685 | |||||||||
8686 | /// IsArithmeticBinaryExpr - Returns true if E is an arithmetic binary | ||||||||
8687 | /// expression, either using a built-in or overloaded operator, | ||||||||
8688 | /// and sets *OpCode to the opcode and *RHSExprs to the right-hand side | ||||||||
8689 | /// expression. | ||||||||
8690 | static bool IsArithmeticBinaryExpr(Expr *E, BinaryOperatorKind *Opcode, | ||||||||
8691 | Expr **RHSExprs) { | ||||||||
8692 | // Don't strip parenthesis: we should not warn if E is in parenthesis. | ||||||||
8693 | E = E->IgnoreImpCasts(); | ||||||||
8694 | E = E->IgnoreConversionOperatorSingleStep(); | ||||||||
8695 | E = E->IgnoreImpCasts(); | ||||||||
8696 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||||||
8697 | E = MTE->getSubExpr(); | ||||||||
8698 | E = E->IgnoreImpCasts(); | ||||||||
8699 | } | ||||||||
8700 | |||||||||
8701 | // Built-in binary operator. | ||||||||
8702 | if (BinaryOperator *OP = dyn_cast<BinaryOperator>(E)) { | ||||||||
8703 | if (IsArithmeticOp(OP->getOpcode())) { | ||||||||
8704 | *Opcode = OP->getOpcode(); | ||||||||
8705 | *RHSExprs = OP->getRHS(); | ||||||||
8706 | return true; | ||||||||
8707 | } | ||||||||
8708 | } | ||||||||
8709 | |||||||||
8710 | // Overloaded operator. | ||||||||
8711 | if (CXXOperatorCallExpr *Call = dyn_cast<CXXOperatorCallExpr>(E)) { | ||||||||
8712 | if (Call->getNumArgs() != 2) | ||||||||
8713 | return false; | ||||||||
8714 | |||||||||
8715 | // Make sure this is really a binary operator that is safe to pass into | ||||||||
8716 | // BinaryOperator::getOverloadedOpcode(), e.g. it's not a subscript op. | ||||||||
8717 | OverloadedOperatorKind OO = Call->getOperator(); | ||||||||
8718 | if (OO < OO_Plus || OO > OO_Arrow || | ||||||||
8719 | OO == OO_PlusPlus || OO == OO_MinusMinus) | ||||||||
8720 | return false; | ||||||||
8721 | |||||||||
8722 | BinaryOperatorKind OpKind = BinaryOperator::getOverloadedOpcode(OO); | ||||||||
8723 | if (IsArithmeticOp(OpKind)) { | ||||||||
8724 | *Opcode = OpKind; | ||||||||
8725 | *RHSExprs = Call->getArg(1); | ||||||||
8726 | return true; | ||||||||
8727 | } | ||||||||
8728 | } | ||||||||
8729 | |||||||||
8730 | return false; | ||||||||
8731 | } | ||||||||
8732 | |||||||||
8733 | /// ExprLooksBoolean - Returns true if E looks boolean, i.e. it has boolean type | ||||||||
8734 | /// or is a logical expression such as (x==y) which has int type, but is | ||||||||
8735 | /// commonly interpreted as boolean. | ||||||||
8736 | static bool ExprLooksBoolean(Expr *E) { | ||||||||
8737 | E = E->IgnoreParenImpCasts(); | ||||||||
8738 | |||||||||
8739 | if (E->getType()->isBooleanType()) | ||||||||
8740 | return true; | ||||||||
8741 | if (BinaryOperator *OP = dyn_cast<BinaryOperator>(E)) | ||||||||
8742 | return OP->isComparisonOp() || OP->isLogicalOp(); | ||||||||
8743 | if (UnaryOperator *OP = dyn_cast<UnaryOperator>(E)) | ||||||||
8744 | return OP->getOpcode() == UO_LNot; | ||||||||
8745 | if (E->getType()->isPointerType()) | ||||||||
8746 | return true; | ||||||||
8747 | // FIXME: What about overloaded operator calls returning "unspecified boolean | ||||||||
8748 | // type"s (commonly pointer-to-members)? | ||||||||
8749 | |||||||||
8750 | return false; | ||||||||
8751 | } | ||||||||
8752 | |||||||||
8753 | /// DiagnoseConditionalPrecedence - Emit a warning when a conditional operator | ||||||||
8754 | /// and binary operator are mixed in a way that suggests the programmer assumed | ||||||||
8755 | /// the conditional operator has higher precedence, for example: | ||||||||
8756 | /// "int x = a + someBinaryCondition ? 1 : 2". | ||||||||
8757 | static void DiagnoseConditionalPrecedence(Sema &Self, | ||||||||
8758 | SourceLocation OpLoc, | ||||||||
8759 | Expr *Condition, | ||||||||
8760 | Expr *LHSExpr, | ||||||||
8761 | Expr *RHSExpr) { | ||||||||
8762 | BinaryOperatorKind CondOpcode; | ||||||||
8763 | Expr *CondRHS; | ||||||||
8764 | |||||||||
8765 | if (!IsArithmeticBinaryExpr(Condition, &CondOpcode, &CondRHS)) | ||||||||
8766 | return; | ||||||||
8767 | if (!ExprLooksBoolean(CondRHS)) | ||||||||
8768 | return; | ||||||||
8769 | |||||||||
8770 | // The condition is an arithmetic binary expression, with a right- | ||||||||
8771 | // hand side that looks boolean, so warn. | ||||||||
8772 | |||||||||
8773 | unsigned DiagID = BinaryOperator::isBitwiseOp(CondOpcode) | ||||||||
8774 | ? diag::warn_precedence_bitwise_conditional | ||||||||
8775 | : diag::warn_precedence_conditional; | ||||||||
8776 | |||||||||
8777 | Self.Diag(OpLoc, DiagID) | ||||||||
8778 | << Condition->getSourceRange() | ||||||||
8779 | << BinaryOperator::getOpcodeStr(CondOpcode); | ||||||||
8780 | |||||||||
8781 | SuggestParentheses( | ||||||||
8782 | Self, OpLoc, | ||||||||
8783 | Self.PDiag(diag::note_precedence_silence) | ||||||||
8784 | << BinaryOperator::getOpcodeStr(CondOpcode), | ||||||||
8785 | SourceRange(Condition->getBeginLoc(), Condition->getEndLoc())); | ||||||||
8786 | |||||||||
8787 | SuggestParentheses(Self, OpLoc, | ||||||||
8788 | Self.PDiag(diag::note_precedence_conditional_first), | ||||||||
8789 | SourceRange(CondRHS->getBeginLoc(), RHSExpr->getEndLoc())); | ||||||||
8790 | } | ||||||||
8791 | |||||||||
8792 | /// Compute the nullability of a conditional expression. | ||||||||
8793 | static QualType computeConditionalNullability(QualType ResTy, bool IsBin, | ||||||||
8794 | QualType LHSTy, QualType RHSTy, | ||||||||
8795 | ASTContext &Ctx) { | ||||||||
8796 | if (!ResTy->isAnyPointerType()) | ||||||||
8797 | return ResTy; | ||||||||
8798 | |||||||||
8799 | auto GetNullability = [&Ctx](QualType Ty) { | ||||||||
8800 | Optional<NullabilityKind> Kind = Ty->getNullability(Ctx); | ||||||||
8801 | if (Kind) { | ||||||||
8802 | // For our purposes, treat _Nullable_result as _Nullable. | ||||||||
8803 | if (*Kind == NullabilityKind::NullableResult) | ||||||||
8804 | return NullabilityKind::Nullable; | ||||||||
8805 | return *Kind; | ||||||||
8806 | } | ||||||||
8807 | return NullabilityKind::Unspecified; | ||||||||
8808 | }; | ||||||||
8809 | |||||||||
8810 | auto LHSKind = GetNullability(LHSTy), RHSKind = GetNullability(RHSTy); | ||||||||
8811 | NullabilityKind MergedKind; | ||||||||
8812 | |||||||||
8813 | // Compute nullability of a binary conditional expression. | ||||||||
8814 | if (IsBin) { | ||||||||
8815 | if (LHSKind == NullabilityKind::NonNull) | ||||||||
8816 | MergedKind = NullabilityKind::NonNull; | ||||||||
8817 | else | ||||||||
8818 | MergedKind = RHSKind; | ||||||||
8819 | // Compute nullability of a normal conditional expression. | ||||||||
8820 | } else { | ||||||||
8821 | if (LHSKind == NullabilityKind::Nullable || | ||||||||
8822 | RHSKind == NullabilityKind::Nullable) | ||||||||
8823 | MergedKind = NullabilityKind::Nullable; | ||||||||
8824 | else if (LHSKind == NullabilityKind::NonNull) | ||||||||
8825 | MergedKind = RHSKind; | ||||||||
8826 | else if (RHSKind == NullabilityKind::NonNull) | ||||||||
8827 | MergedKind = LHSKind; | ||||||||
8828 | else | ||||||||
8829 | MergedKind = NullabilityKind::Unspecified; | ||||||||
8830 | } | ||||||||
8831 | |||||||||
8832 | // Return if ResTy already has the correct nullability. | ||||||||
8833 | if (GetNullability(ResTy) == MergedKind) | ||||||||
8834 | return ResTy; | ||||||||
8835 | |||||||||
8836 | // Strip all nullability from ResTy. | ||||||||
8837 | while (ResTy->getNullability(Ctx)) | ||||||||
8838 | ResTy = ResTy.getSingleStepDesugaredType(Ctx); | ||||||||
8839 | |||||||||
8840 | // Create a new AttributedType with the new nullability kind. | ||||||||
8841 | auto NewAttr = AttributedType::getNullabilityAttrKind(MergedKind); | ||||||||
8842 | return Ctx.getAttributedType(NewAttr, ResTy, ResTy); | ||||||||
8843 | } | ||||||||
8844 | |||||||||
8845 | /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null | ||||||||
8846 | /// in the case of a the GNU conditional expr extension. | ||||||||
8847 | ExprResult Sema::ActOnConditionalOp(SourceLocation QuestionLoc, | ||||||||
8848 | SourceLocation ColonLoc, | ||||||||
8849 | Expr *CondExpr, Expr *LHSExpr, | ||||||||
8850 | Expr *RHSExpr) { | ||||||||
8851 | if (!Context.isDependenceAllowed()) { | ||||||||
8852 | // C cannot handle TypoExpr nodes in the condition because it | ||||||||
8853 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||||||
8854 | // been dealt with before checking the operands. | ||||||||
8855 | ExprResult CondResult = CorrectDelayedTyposInExpr(CondExpr); | ||||||||
8856 | ExprResult LHSResult = CorrectDelayedTyposInExpr(LHSExpr); | ||||||||
8857 | ExprResult RHSResult = CorrectDelayedTyposInExpr(RHSExpr); | ||||||||
8858 | |||||||||
8859 | if (!CondResult.isUsable()) | ||||||||
8860 | return ExprError(); | ||||||||
8861 | |||||||||
8862 | if (LHSExpr) { | ||||||||
8863 | if (!LHSResult.isUsable()) | ||||||||
8864 | return ExprError(); | ||||||||
8865 | } | ||||||||
8866 | |||||||||
8867 | if (!RHSResult.isUsable()) | ||||||||
8868 | return ExprError(); | ||||||||
8869 | |||||||||
8870 | CondExpr = CondResult.get(); | ||||||||
8871 | LHSExpr = LHSResult.get(); | ||||||||
8872 | RHSExpr = RHSResult.get(); | ||||||||
8873 | } | ||||||||
8874 | |||||||||
8875 | // If this is the gnu "x ?: y" extension, analyze the types as though the LHS | ||||||||
8876 | // was the condition. | ||||||||
8877 | OpaqueValueExpr *opaqueValue = nullptr; | ||||||||
8878 | Expr *commonExpr = nullptr; | ||||||||
8879 | if (!LHSExpr) { | ||||||||
8880 | commonExpr = CondExpr; | ||||||||
8881 | // Lower out placeholder types first. This is important so that we don't | ||||||||
8882 | // try to capture a placeholder. This happens in few cases in C++; such | ||||||||
8883 | // as Objective-C++'s dictionary subscripting syntax. | ||||||||
8884 | if (commonExpr->hasPlaceholderType()) { | ||||||||
8885 | ExprResult result = CheckPlaceholderExpr(commonExpr); | ||||||||
8886 | if (!result.isUsable()) return ExprError(); | ||||||||
8887 | commonExpr = result.get(); | ||||||||
8888 | } | ||||||||
8889 | // We usually want to apply unary conversions *before* saving, except | ||||||||
8890 | // in the special case of a C++ l-value conditional. | ||||||||
8891 | if (!(getLangOpts().CPlusPlus | ||||||||
8892 | && !commonExpr->isTypeDependent() | ||||||||
8893 | && commonExpr->getValueKind() == RHSExpr->getValueKind() | ||||||||
8894 | && commonExpr->isGLValue() | ||||||||
8895 | && commonExpr->isOrdinaryOrBitFieldObject() | ||||||||
8896 | && RHSExpr->isOrdinaryOrBitFieldObject() | ||||||||
8897 | && Context.hasSameType(commonExpr->getType(), RHSExpr->getType()))) { | ||||||||
8898 | ExprResult commonRes = UsualUnaryConversions(commonExpr); | ||||||||
8899 | if (commonRes.isInvalid()) | ||||||||
8900 | return ExprError(); | ||||||||
8901 | commonExpr = commonRes.get(); | ||||||||
8902 | } | ||||||||
8903 | |||||||||
8904 | // If the common expression is a class or array prvalue, materialize it | ||||||||
8905 | // so that we can safely refer to it multiple times. | ||||||||
8906 | if (commonExpr->isPRValue() && (commonExpr->getType()->isRecordType() || | ||||||||
8907 | commonExpr->getType()->isArrayType())) { | ||||||||
8908 | ExprResult MatExpr = TemporaryMaterializationConversion(commonExpr); | ||||||||
8909 | if (MatExpr.isInvalid()) | ||||||||
8910 | return ExprError(); | ||||||||
8911 | commonExpr = MatExpr.get(); | ||||||||
8912 | } | ||||||||
8913 | |||||||||
8914 | opaqueValue = new (Context) OpaqueValueExpr(commonExpr->getExprLoc(), | ||||||||
8915 | commonExpr->getType(), | ||||||||
8916 | commonExpr->getValueKind(), | ||||||||
8917 | commonExpr->getObjectKind(), | ||||||||
8918 | commonExpr); | ||||||||
8919 | LHSExpr = CondExpr = opaqueValue; | ||||||||
8920 | } | ||||||||
8921 | |||||||||
8922 | QualType LHSTy = LHSExpr->getType(), RHSTy = RHSExpr->getType(); | ||||||||
8923 | ExprValueKind VK = VK_PRValue; | ||||||||
8924 | ExprObjectKind OK = OK_Ordinary; | ||||||||
8925 | ExprResult Cond = CondExpr, LHS = LHSExpr, RHS = RHSExpr; | ||||||||
8926 | QualType result = CheckConditionalOperands(Cond, LHS, RHS, | ||||||||
8927 | VK, OK, QuestionLoc); | ||||||||
8928 | if (result.isNull() || Cond.isInvalid() || LHS.isInvalid() || | ||||||||
8929 | RHS.isInvalid()) | ||||||||
8930 | return ExprError(); | ||||||||
8931 | |||||||||
8932 | DiagnoseConditionalPrecedence(*this, QuestionLoc, Cond.get(), LHS.get(), | ||||||||
8933 | RHS.get()); | ||||||||
8934 | |||||||||
8935 | CheckBoolLikeConversion(Cond.get(), QuestionLoc); | ||||||||
8936 | |||||||||
8937 | result = computeConditionalNullability(result, commonExpr, LHSTy, RHSTy, | ||||||||
8938 | Context); | ||||||||
8939 | |||||||||
8940 | if (!commonExpr) | ||||||||
8941 | return new (Context) | ||||||||
8942 | ConditionalOperator(Cond.get(), QuestionLoc, LHS.get(), ColonLoc, | ||||||||
8943 | RHS.get(), result, VK, OK); | ||||||||
8944 | |||||||||
8945 | return new (Context) BinaryConditionalOperator( | ||||||||
8946 | commonExpr, opaqueValue, Cond.get(), LHS.get(), RHS.get(), QuestionLoc, | ||||||||
8947 | ColonLoc, result, VK, OK); | ||||||||
8948 | } | ||||||||
8949 | |||||||||
8950 | // Check if we have a conversion between incompatible cmse function pointer | ||||||||
8951 | // types, that is, a conversion between a function pointer with the | ||||||||
8952 | // cmse_nonsecure_call attribute and one without. | ||||||||
8953 | static bool IsInvalidCmseNSCallConversion(Sema &S, QualType FromType, | ||||||||
8954 | QualType ToType) { | ||||||||
8955 | if (const auto *ToFn = | ||||||||
8956 | dyn_cast<FunctionType>(S.Context.getCanonicalType(ToType))) { | ||||||||
8957 | if (const auto *FromFn = | ||||||||
8958 | dyn_cast<FunctionType>(S.Context.getCanonicalType(FromType))) { | ||||||||
8959 | FunctionType::ExtInfo ToEInfo = ToFn->getExtInfo(); | ||||||||
8960 | FunctionType::ExtInfo FromEInfo = FromFn->getExtInfo(); | ||||||||
8961 | |||||||||
8962 | return ToEInfo.getCmseNSCall() != FromEInfo.getCmseNSCall(); | ||||||||
8963 | } | ||||||||
8964 | } | ||||||||
8965 | return false; | ||||||||
8966 | } | ||||||||
8967 | |||||||||
8968 | // checkPointerTypesForAssignment - This is a very tricky routine (despite | ||||||||
8969 | // being closely modeled after the C99 spec:-). The odd characteristic of this | ||||||||
8970 | // routine is it effectively iqnores the qualifiers on the top level pointee. | ||||||||
8971 | // This circumvents the usual type rules specified in 6.2.7p1 & 6.7.5.[1-3]. | ||||||||
8972 | // FIXME: add a couple examples in this comment. | ||||||||
8973 | static Sema::AssignConvertType | ||||||||
8974 | checkPointerTypesForAssignment(Sema &S, QualType LHSType, QualType RHSType) { | ||||||||
8975 | assert(LHSType.isCanonical() && "LHS not canonicalized!")(static_cast <bool> (LHSType.isCanonical() && "LHS not canonicalized!" ) ? void (0) : __assert_fail ("LHSType.isCanonical() && \"LHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8975, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8976 | assert(RHSType.isCanonical() && "RHS not canonicalized!")(static_cast <bool> (RHSType.isCanonical() && "RHS not canonicalized!" ) ? void (0) : __assert_fail ("RHSType.isCanonical() && \"RHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 8976, __extension__ __PRETTY_FUNCTION__)); | ||||||||
8977 | |||||||||
8978 | // get the "pointed to" type (ignoring qualifiers at the top level) | ||||||||
8979 | const Type *lhptee, *rhptee; | ||||||||
8980 | Qualifiers lhq, rhq; | ||||||||
8981 | std::tie(lhptee, lhq) = | ||||||||
8982 | cast<PointerType>(LHSType)->getPointeeType().split().asPair(); | ||||||||
8983 | std::tie(rhptee, rhq) = | ||||||||
8984 | cast<PointerType>(RHSType)->getPointeeType().split().asPair(); | ||||||||
8985 | |||||||||
8986 | Sema::AssignConvertType ConvTy = Sema::Compatible; | ||||||||
8987 | |||||||||
8988 | // C99 6.5.16.1p1: This following citation is common to constraints | ||||||||
8989 | // 3 & 4 (below). ...and the type *pointed to* by the left has all the | ||||||||
8990 | // qualifiers of the type *pointed to* by the right; | ||||||||
8991 | |||||||||
8992 | // As a special case, 'non-__weak A *' -> 'non-__weak const *' is okay. | ||||||||
8993 | if (lhq.getObjCLifetime() != rhq.getObjCLifetime() && | ||||||||
8994 | lhq.compatiblyIncludesObjCLifetime(rhq)) { | ||||||||
8995 | // Ignore lifetime for further calculation. | ||||||||
8996 | lhq.removeObjCLifetime(); | ||||||||
8997 | rhq.removeObjCLifetime(); | ||||||||
8998 | } | ||||||||
8999 | |||||||||
9000 | if (!lhq.compatiblyIncludes(rhq)) { | ||||||||
9001 | // Treat address-space mismatches as fatal. | ||||||||
9002 | if (!lhq.isAddressSpaceSupersetOf(rhq)) | ||||||||
9003 | return Sema::IncompatiblePointerDiscardsQualifiers; | ||||||||
9004 | |||||||||
9005 | // It's okay to add or remove GC or lifetime qualifiers when converting to | ||||||||
9006 | // and from void*. | ||||||||
9007 | else if (lhq.withoutObjCGCAttr().withoutObjCLifetime() | ||||||||
9008 | .compatiblyIncludes( | ||||||||
9009 | rhq.withoutObjCGCAttr().withoutObjCLifetime()) | ||||||||
9010 | && (lhptee->isVoidType() || rhptee->isVoidType())) | ||||||||
9011 | ; // keep old | ||||||||
9012 | |||||||||
9013 | // Treat lifetime mismatches as fatal. | ||||||||
9014 | else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) | ||||||||
9015 | ConvTy = Sema::IncompatiblePointerDiscardsQualifiers; | ||||||||
9016 | |||||||||
9017 | // For GCC/MS compatibility, other qualifier mismatches are treated | ||||||||
9018 | // as still compatible in C. | ||||||||
9019 | else ConvTy = Sema::CompatiblePointerDiscardsQualifiers; | ||||||||
9020 | } | ||||||||
9021 | |||||||||
9022 | // C99 6.5.16.1p1 (constraint 4): If one operand is a pointer to an object or | ||||||||
9023 | // incomplete type and the other is a pointer to a qualified or unqualified | ||||||||
9024 | // version of void... | ||||||||
9025 | if (lhptee->isVoidType()) { | ||||||||
9026 | if (rhptee->isIncompleteOrObjectType()) | ||||||||
9027 | return ConvTy; | ||||||||
9028 | |||||||||
9029 | // As an extension, we allow cast to/from void* to function pointer. | ||||||||
9030 | assert(rhptee->isFunctionType())(static_cast <bool> (rhptee->isFunctionType()) ? void (0) : __assert_fail ("rhptee->isFunctionType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9030, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9031 | return Sema::FunctionVoidPointer; | ||||||||
9032 | } | ||||||||
9033 | |||||||||
9034 | if (rhptee->isVoidType()) { | ||||||||
9035 | if (lhptee->isIncompleteOrObjectType()) | ||||||||
9036 | return ConvTy; | ||||||||
9037 | |||||||||
9038 | // As an extension, we allow cast to/from void* to function pointer. | ||||||||
9039 | assert(lhptee->isFunctionType())(static_cast <bool> (lhptee->isFunctionType()) ? void (0) : __assert_fail ("lhptee->isFunctionType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9039, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9040 | return Sema::FunctionVoidPointer; | ||||||||
9041 | } | ||||||||
9042 | |||||||||
9043 | // C99 6.5.16.1p1 (constraint 3): both operands are pointers to qualified or | ||||||||
9044 | // unqualified versions of compatible types, ... | ||||||||
9045 | QualType ltrans = QualType(lhptee, 0), rtrans = QualType(rhptee, 0); | ||||||||
9046 | if (!S.Context.typesAreCompatible(ltrans, rtrans)) { | ||||||||
9047 | // Check if the pointee types are compatible ignoring the sign. | ||||||||
9048 | // We explicitly check for char so that we catch "char" vs | ||||||||
9049 | // "unsigned char" on systems where "char" is unsigned. | ||||||||
9050 | if (lhptee->isCharType()) | ||||||||
9051 | ltrans = S.Context.UnsignedCharTy; | ||||||||
9052 | else if (lhptee->hasSignedIntegerRepresentation()) | ||||||||
9053 | ltrans = S.Context.getCorrespondingUnsignedType(ltrans); | ||||||||
9054 | |||||||||
9055 | if (rhptee->isCharType()) | ||||||||
9056 | rtrans = S.Context.UnsignedCharTy; | ||||||||
9057 | else if (rhptee->hasSignedIntegerRepresentation()) | ||||||||
9058 | rtrans = S.Context.getCorrespondingUnsignedType(rtrans); | ||||||||
9059 | |||||||||
9060 | if (ltrans == rtrans) { | ||||||||
9061 | // Types are compatible ignoring the sign. Qualifier incompatibility | ||||||||
9062 | // takes priority over sign incompatibility because the sign | ||||||||
9063 | // warning can be disabled. | ||||||||
9064 | if (ConvTy != Sema::Compatible) | ||||||||
9065 | return ConvTy; | ||||||||
9066 | |||||||||
9067 | return Sema::IncompatiblePointerSign; | ||||||||
9068 | } | ||||||||
9069 | |||||||||
9070 | // If we are a multi-level pointer, it's possible that our issue is simply | ||||||||
9071 | // one of qualification - e.g. char ** -> const char ** is not allowed. If | ||||||||
9072 | // the eventual target type is the same and the pointers have the same | ||||||||
9073 | // level of indirection, this must be the issue. | ||||||||
9074 | if (isa<PointerType>(lhptee) && isa<PointerType>(rhptee)) { | ||||||||
9075 | do { | ||||||||
9076 | std::tie(lhptee, lhq) = | ||||||||
9077 | cast<PointerType>(lhptee)->getPointeeType().split().asPair(); | ||||||||
9078 | std::tie(rhptee, rhq) = | ||||||||
9079 | cast<PointerType>(rhptee)->getPointeeType().split().asPair(); | ||||||||
9080 | |||||||||
9081 | // Inconsistent address spaces at this point is invalid, even if the | ||||||||
9082 | // address spaces would be compatible. | ||||||||
9083 | // FIXME: This doesn't catch address space mismatches for pointers of | ||||||||
9084 | // different nesting levels, like: | ||||||||
9085 | // __local int *** a; | ||||||||
9086 | // int ** b = a; | ||||||||
9087 | // It's not clear how to actually determine when such pointers are | ||||||||
9088 | // invalidly incompatible. | ||||||||
9089 | if (lhq.getAddressSpace() != rhq.getAddressSpace()) | ||||||||
9090 | return Sema::IncompatibleNestedPointerAddressSpaceMismatch; | ||||||||
9091 | |||||||||
9092 | } while (isa<PointerType>(lhptee) && isa<PointerType>(rhptee)); | ||||||||
9093 | |||||||||
9094 | if (lhptee == rhptee) | ||||||||
9095 | return Sema::IncompatibleNestedPointerQualifiers; | ||||||||
9096 | } | ||||||||
9097 | |||||||||
9098 | // General pointer incompatibility takes priority over qualifiers. | ||||||||
9099 | if (RHSType->isFunctionPointerType() && LHSType->isFunctionPointerType()) | ||||||||
9100 | return Sema::IncompatibleFunctionPointer; | ||||||||
9101 | return Sema::IncompatiblePointer; | ||||||||
9102 | } | ||||||||
9103 | if (!S.getLangOpts().CPlusPlus && | ||||||||
9104 | S.IsFunctionConversion(ltrans, rtrans, ltrans)) | ||||||||
9105 | return Sema::IncompatibleFunctionPointer; | ||||||||
9106 | if (IsInvalidCmseNSCallConversion(S, ltrans, rtrans)) | ||||||||
9107 | return Sema::IncompatibleFunctionPointer; | ||||||||
9108 | return ConvTy; | ||||||||
9109 | } | ||||||||
9110 | |||||||||
9111 | /// checkBlockPointerTypesForAssignment - This routine determines whether two | ||||||||
9112 | /// block pointer types are compatible or whether a block and normal pointer | ||||||||
9113 | /// are compatible. It is more restrict than comparing two function pointer | ||||||||
9114 | // types. | ||||||||
9115 | static Sema::AssignConvertType | ||||||||
9116 | checkBlockPointerTypesForAssignment(Sema &S, QualType LHSType, | ||||||||
9117 | QualType RHSType) { | ||||||||
9118 | assert(LHSType.isCanonical() && "LHS not canonicalized!")(static_cast <bool> (LHSType.isCanonical() && "LHS not canonicalized!" ) ? void (0) : __assert_fail ("LHSType.isCanonical() && \"LHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9118, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9119 | assert(RHSType.isCanonical() && "RHS not canonicalized!")(static_cast <bool> (RHSType.isCanonical() && "RHS not canonicalized!" ) ? void (0) : __assert_fail ("RHSType.isCanonical() && \"RHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9119, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9120 | |||||||||
9121 | QualType lhptee, rhptee; | ||||||||
9122 | |||||||||
9123 | // get the "pointed to" type (ignoring qualifiers at the top level) | ||||||||
9124 | lhptee = cast<BlockPointerType>(LHSType)->getPointeeType(); | ||||||||
9125 | rhptee = cast<BlockPointerType>(RHSType)->getPointeeType(); | ||||||||
9126 | |||||||||
9127 | // In C++, the types have to match exactly. | ||||||||
9128 | if (S.getLangOpts().CPlusPlus) | ||||||||
9129 | return Sema::IncompatibleBlockPointer; | ||||||||
9130 | |||||||||
9131 | Sema::AssignConvertType ConvTy = Sema::Compatible; | ||||||||
9132 | |||||||||
9133 | // For blocks we enforce that qualifiers are identical. | ||||||||
9134 | Qualifiers LQuals = lhptee.getLocalQualifiers(); | ||||||||
9135 | Qualifiers RQuals = rhptee.getLocalQualifiers(); | ||||||||
9136 | if (S.getLangOpts().OpenCL) { | ||||||||
9137 | LQuals.removeAddressSpace(); | ||||||||
9138 | RQuals.removeAddressSpace(); | ||||||||
9139 | } | ||||||||
9140 | if (LQuals != RQuals) | ||||||||
9141 | ConvTy = Sema::CompatiblePointerDiscardsQualifiers; | ||||||||
9142 | |||||||||
9143 | // FIXME: OpenCL doesn't define the exact compile time semantics for a block | ||||||||
9144 | // assignment. | ||||||||
9145 | // The current behavior is similar to C++ lambdas. A block might be | ||||||||
9146 | // assigned to a variable iff its return type and parameters are compatible | ||||||||
9147 | // (C99 6.2.7) with the corresponding return type and parameters of the LHS of | ||||||||
9148 | // an assignment. Presumably it should behave in way that a function pointer | ||||||||
9149 | // assignment does in C, so for each parameter and return type: | ||||||||
9150 | // * CVR and address space of LHS should be a superset of CVR and address | ||||||||
9151 | // space of RHS. | ||||||||
9152 | // * unqualified types should be compatible. | ||||||||
9153 | if (S.getLangOpts().OpenCL) { | ||||||||
9154 | if (!S.Context.typesAreBlockPointerCompatible( | ||||||||
9155 | S.Context.getQualifiedType(LHSType.getUnqualifiedType(), LQuals), | ||||||||
9156 | S.Context.getQualifiedType(RHSType.getUnqualifiedType(), RQuals))) | ||||||||
9157 | return Sema::IncompatibleBlockPointer; | ||||||||
9158 | } else if (!S.Context.typesAreBlockPointerCompatible(LHSType, RHSType)) | ||||||||
9159 | return Sema::IncompatibleBlockPointer; | ||||||||
9160 | |||||||||
9161 | return ConvTy; | ||||||||
9162 | } | ||||||||
9163 | |||||||||
9164 | /// checkObjCPointerTypesForAssignment - Compares two objective-c pointer types | ||||||||
9165 | /// for assignment compatibility. | ||||||||
9166 | static Sema::AssignConvertType | ||||||||
9167 | checkObjCPointerTypesForAssignment(Sema &S, QualType LHSType, | ||||||||
9168 | QualType RHSType) { | ||||||||
9169 | assert(LHSType.isCanonical() && "LHS was not canonicalized!")(static_cast <bool> (LHSType.isCanonical() && "LHS was not canonicalized!" ) ? void (0) : __assert_fail ("LHSType.isCanonical() && \"LHS was not canonicalized!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9169, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9170 | assert(RHSType.isCanonical() && "RHS was not canonicalized!")(static_cast <bool> (RHSType.isCanonical() && "RHS was not canonicalized!" ) ? void (0) : __assert_fail ("RHSType.isCanonical() && \"RHS was not canonicalized!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9170, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9171 | |||||||||
9172 | if (LHSType->isObjCBuiltinType()) { | ||||||||
9173 | // Class is not compatible with ObjC object pointers. | ||||||||
9174 | if (LHSType->isObjCClassType() && !RHSType->isObjCBuiltinType() && | ||||||||
9175 | !RHSType->isObjCQualifiedClassType()) | ||||||||
9176 | return Sema::IncompatiblePointer; | ||||||||
9177 | return Sema::Compatible; | ||||||||
9178 | } | ||||||||
9179 | if (RHSType->isObjCBuiltinType()) { | ||||||||
9180 | if (RHSType->isObjCClassType() && !LHSType->isObjCBuiltinType() && | ||||||||
9181 | !LHSType->isObjCQualifiedClassType()) | ||||||||
9182 | return Sema::IncompatiblePointer; | ||||||||
9183 | return Sema::Compatible; | ||||||||
9184 | } | ||||||||
9185 | QualType lhptee = LHSType->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
9186 | QualType rhptee = RHSType->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
9187 | |||||||||
9188 | if (!lhptee.isAtLeastAsQualifiedAs(rhptee) && | ||||||||
9189 | // make an exception for id<P> | ||||||||
9190 | !LHSType->isObjCQualifiedIdType()) | ||||||||
9191 | return Sema::CompatiblePointerDiscardsQualifiers; | ||||||||
9192 | |||||||||
9193 | if (S.Context.typesAreCompatible(LHSType, RHSType)) | ||||||||
9194 | return Sema::Compatible; | ||||||||
9195 | if (LHSType->isObjCQualifiedIdType() || RHSType->isObjCQualifiedIdType()) | ||||||||
9196 | return Sema::IncompatibleObjCQualifiedId; | ||||||||
9197 | return Sema::IncompatiblePointer; | ||||||||
9198 | } | ||||||||
9199 | |||||||||
9200 | Sema::AssignConvertType | ||||||||
9201 | Sema::CheckAssignmentConstraints(SourceLocation Loc, | ||||||||
9202 | QualType LHSType, QualType RHSType) { | ||||||||
9203 | // Fake up an opaque expression. We don't actually care about what | ||||||||
9204 | // cast operations are required, so if CheckAssignmentConstraints | ||||||||
9205 | // adds casts to this they'll be wasted, but fortunately that doesn't | ||||||||
9206 | // usually happen on valid code. | ||||||||
9207 | OpaqueValueExpr RHSExpr(Loc, RHSType, VK_PRValue); | ||||||||
9208 | ExprResult RHSPtr = &RHSExpr; | ||||||||
9209 | CastKind K; | ||||||||
9210 | |||||||||
9211 | return CheckAssignmentConstraints(LHSType, RHSPtr, K, /*ConvertRHS=*/false); | ||||||||
9212 | } | ||||||||
9213 | |||||||||
9214 | /// This helper function returns true if QT is a vector type that has element | ||||||||
9215 | /// type ElementType. | ||||||||
9216 | static bool isVector(QualType QT, QualType ElementType) { | ||||||||
9217 | if (const VectorType *VT = QT->getAs<VectorType>()) | ||||||||
9218 | return VT->getElementType().getCanonicalType() == ElementType; | ||||||||
9219 | return false; | ||||||||
9220 | } | ||||||||
9221 | |||||||||
9222 | /// CheckAssignmentConstraints (C99 6.5.16) - This routine currently | ||||||||
9223 | /// has code to accommodate several GCC extensions when type checking | ||||||||
9224 | /// pointers. Here are some objectionable examples that GCC considers warnings: | ||||||||
9225 | /// | ||||||||
9226 | /// int a, *pint; | ||||||||
9227 | /// short *pshort; | ||||||||
9228 | /// struct foo *pfoo; | ||||||||
9229 | /// | ||||||||
9230 | /// pint = pshort; // warning: assignment from incompatible pointer type | ||||||||
9231 | /// a = pint; // warning: assignment makes integer from pointer without a cast | ||||||||
9232 | /// pint = a; // warning: assignment makes pointer from integer without a cast | ||||||||
9233 | /// pint = pfoo; // warning: assignment from incompatible pointer type | ||||||||
9234 | /// | ||||||||
9235 | /// As a result, the code for dealing with pointers is more complex than the | ||||||||
9236 | /// C99 spec dictates. | ||||||||
9237 | /// | ||||||||
9238 | /// Sets 'Kind' for any result kind except Incompatible. | ||||||||
9239 | Sema::AssignConvertType | ||||||||
9240 | Sema::CheckAssignmentConstraints(QualType LHSType, ExprResult &RHS, | ||||||||
9241 | CastKind &Kind, bool ConvertRHS) { | ||||||||
9242 | QualType RHSType = RHS.get()->getType(); | ||||||||
9243 | QualType OrigLHSType = LHSType; | ||||||||
9244 | |||||||||
9245 | // Get canonical types. We're not formatting these types, just comparing | ||||||||
9246 | // them. | ||||||||
9247 | LHSType = Context.getCanonicalType(LHSType).getUnqualifiedType(); | ||||||||
9248 | RHSType = Context.getCanonicalType(RHSType).getUnqualifiedType(); | ||||||||
9249 | |||||||||
9250 | // Common case: no conversion required. | ||||||||
9251 | if (LHSType == RHSType) { | ||||||||
| |||||||||
9252 | Kind = CK_NoOp; | ||||||||
9253 | return Compatible; | ||||||||
9254 | } | ||||||||
9255 | |||||||||
9256 | // If we have an atomic type, try a non-atomic assignment, then just add an | ||||||||
9257 | // atomic qualification step. | ||||||||
9258 | if (const AtomicType *AtomicTy
| ||||||||
9259 | Sema::AssignConvertType result = | ||||||||
9260 | CheckAssignmentConstraints(AtomicTy->getValueType(), RHS, Kind); | ||||||||
9261 | if (result != Compatible) | ||||||||
9262 | return result; | ||||||||
9263 | if (Kind != CK_NoOp && ConvertRHS) | ||||||||
9264 | RHS = ImpCastExprToType(RHS.get(), AtomicTy->getValueType(), Kind); | ||||||||
9265 | Kind = CK_NonAtomicToAtomic; | ||||||||
9266 | return Compatible; | ||||||||
9267 | } | ||||||||
9268 | |||||||||
9269 | // If the left-hand side is a reference type, then we are in a | ||||||||
9270 | // (rare!) case where we've allowed the use of references in C, | ||||||||
9271 | // e.g., as a parameter type in a built-in function. In this case, | ||||||||
9272 | // just make sure that the type referenced is compatible with the | ||||||||
9273 | // right-hand side type. The caller is responsible for adjusting | ||||||||
9274 | // LHSType so that the resulting expression does not have reference | ||||||||
9275 | // type. | ||||||||
9276 | if (const ReferenceType *LHSTypeRef
| ||||||||
9277 | if (Context.typesAreCompatible(LHSTypeRef->getPointeeType(), RHSType)) { | ||||||||
9278 | Kind = CK_LValueBitCast; | ||||||||
9279 | return Compatible; | ||||||||
9280 | } | ||||||||
9281 | return Incompatible; | ||||||||
9282 | } | ||||||||
9283 | |||||||||
9284 | // Allow scalar to ExtVector assignments, and assignments of an ExtVector type | ||||||||
9285 | // to the same ExtVector type. | ||||||||
9286 | if (LHSType->isExtVectorType()) { | ||||||||
9287 | if (RHSType->isExtVectorType()) | ||||||||
9288 | return Incompatible; | ||||||||
9289 | if (RHSType->isArithmeticType()) { | ||||||||
9290 | // CK_VectorSplat does T -> vector T, so first cast to the element type. | ||||||||
9291 | if (ConvertRHS) | ||||||||
9292 | RHS = prepareVectorSplat(LHSType, RHS.get()); | ||||||||
9293 | Kind = CK_VectorSplat; | ||||||||
9294 | return Compatible; | ||||||||
9295 | } | ||||||||
9296 | } | ||||||||
9297 | |||||||||
9298 | // Conversions to or from vector type. | ||||||||
9299 | if (LHSType->isVectorType() || RHSType->isVectorType()) { | ||||||||
9300 | if (LHSType->isVectorType() && RHSType->isVectorType()) { | ||||||||
9301 | // Allow assignments of an AltiVec vector type to an equivalent GCC | ||||||||
9302 | // vector type and vice versa | ||||||||
9303 | if (Context.areCompatibleVectorTypes(LHSType, RHSType)) { | ||||||||
9304 | Kind = CK_BitCast; | ||||||||
9305 | return Compatible; | ||||||||
9306 | } | ||||||||
9307 | |||||||||
9308 | // If we are allowing lax vector conversions, and LHS and RHS are both | ||||||||
9309 | // vectors, the total size only needs to be the same. This is a bitcast; | ||||||||
9310 | // no bits are changed but the result type is different. | ||||||||
9311 | if (isLaxVectorConversion(RHSType, LHSType)) { | ||||||||
9312 | Kind = CK_BitCast; | ||||||||
9313 | return IncompatibleVectors; | ||||||||
9314 | } | ||||||||
9315 | } | ||||||||
9316 | |||||||||
9317 | // When the RHS comes from another lax conversion (e.g. binops between | ||||||||
9318 | // scalars and vectors) the result is canonicalized as a vector. When the | ||||||||
9319 | // LHS is also a vector, the lax is allowed by the condition above. Handle | ||||||||
9320 | // the case where LHS is a scalar. | ||||||||
9321 | if (LHSType->isScalarType()) { | ||||||||
9322 | const VectorType *VecType = RHSType->getAs<VectorType>(); | ||||||||
9323 | if (VecType && VecType->getNumElements() == 1 && | ||||||||
9324 | isLaxVectorConversion(RHSType, LHSType)) { | ||||||||
9325 | ExprResult *VecExpr = &RHS; | ||||||||
9326 | *VecExpr = ImpCastExprToType(VecExpr->get(), LHSType, CK_BitCast); | ||||||||
9327 | Kind = CK_BitCast; | ||||||||
9328 | return Compatible; | ||||||||
9329 | } | ||||||||
9330 | } | ||||||||
9331 | |||||||||
9332 | // Allow assignments between fixed-length and sizeless SVE vectors. | ||||||||
9333 | if ((LHSType->isSizelessBuiltinType() && RHSType->isVectorType()) || | ||||||||
9334 | (LHSType->isVectorType() && RHSType->isSizelessBuiltinType())) | ||||||||
9335 | if (Context.areCompatibleSveTypes(LHSType, RHSType) || | ||||||||
9336 | Context.areLaxCompatibleSveTypes(LHSType, RHSType)) { | ||||||||
9337 | Kind = CK_BitCast; | ||||||||
9338 | return Compatible; | ||||||||
9339 | } | ||||||||
9340 | |||||||||
9341 | return Incompatible; | ||||||||
9342 | } | ||||||||
9343 | |||||||||
9344 | // Diagnose attempts to convert between __float128 and long double where | ||||||||
9345 | // such conversions currently can't be handled. | ||||||||
9346 | if (unsupportedTypeConversion(*this, LHSType, RHSType)) | ||||||||
9347 | return Incompatible; | ||||||||
9348 | |||||||||
9349 | // Disallow assigning a _Complex to a real type in C++ mode since it simply | ||||||||
9350 | // discards the imaginary part. | ||||||||
9351 | if (getLangOpts().CPlusPlus && RHSType->getAs<ComplexType>() && | ||||||||
9352 | !LHSType->getAs<ComplexType>()) | ||||||||
9353 | return Incompatible; | ||||||||
9354 | |||||||||
9355 | // Arithmetic conversions. | ||||||||
9356 | if (LHSType->isArithmeticType() && RHSType->isArithmeticType() && | ||||||||
9357 | !(getLangOpts().CPlusPlus && LHSType->isEnumeralType())) { | ||||||||
9358 | if (ConvertRHS) | ||||||||
9359 | Kind = PrepareScalarCast(RHS, LHSType); | ||||||||
9360 | return Compatible; | ||||||||
9361 | } | ||||||||
9362 | |||||||||
9363 | // Conversions to normal pointers. | ||||||||
9364 | if (const PointerType *LHSPointer = dyn_cast<PointerType>(LHSType)) { | ||||||||
9365 | // U* -> T* | ||||||||
9366 | if (isa<PointerType>(RHSType)) { | ||||||||
9367 | LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); | ||||||||
9368 | LangAS AddrSpaceR = RHSType->getPointeeType().getAddressSpace(); | ||||||||
9369 | if (AddrSpaceL != AddrSpaceR) | ||||||||
9370 | Kind = CK_AddressSpaceConversion; | ||||||||
9371 | else if (Context.hasCvrSimilarType(RHSType, LHSType)) | ||||||||
9372 | Kind = CK_NoOp; | ||||||||
9373 | else | ||||||||
9374 | Kind = CK_BitCast; | ||||||||
9375 | return checkPointerTypesForAssignment(*this, LHSType, RHSType); | ||||||||
9376 | } | ||||||||
9377 | |||||||||
9378 | // int -> T* | ||||||||
9379 | if (RHSType->isIntegerType()) { | ||||||||
9380 | Kind = CK_IntegralToPointer; // FIXME: null? | ||||||||
9381 | return IntToPointer; | ||||||||
9382 | } | ||||||||
9383 | |||||||||
9384 | // C pointers are not compatible with ObjC object pointers, | ||||||||
9385 | // with two exceptions: | ||||||||
9386 | if (isa<ObjCObjectPointerType>(RHSType)) { | ||||||||
9387 | // - conversions to void* | ||||||||
9388 | if (LHSPointer->getPointeeType()->isVoidType()) { | ||||||||
9389 | Kind = CK_BitCast; | ||||||||
9390 | return Compatible; | ||||||||
9391 | } | ||||||||
9392 | |||||||||
9393 | // - conversions from 'Class' to the redefinition type | ||||||||
9394 | if (RHSType->isObjCClassType() && | ||||||||
9395 | Context.hasSameType(LHSType, | ||||||||
9396 | Context.getObjCClassRedefinitionType())) { | ||||||||
9397 | Kind = CK_BitCast; | ||||||||
9398 | return Compatible; | ||||||||
9399 | } | ||||||||
9400 | |||||||||
9401 | Kind = CK_BitCast; | ||||||||
9402 | return IncompatiblePointer; | ||||||||
9403 | } | ||||||||
9404 | |||||||||
9405 | // U^ -> void* | ||||||||
9406 | if (RHSType->getAs<BlockPointerType>()) { | ||||||||
9407 | if (LHSPointer->getPointeeType()->isVoidType()) { | ||||||||
9408 | LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); | ||||||||
9409 | LangAS AddrSpaceR = RHSType->getAs<BlockPointerType>() | ||||||||
| |||||||||
9410 | ->getPointeeType() | ||||||||
9411 | .getAddressSpace(); | ||||||||
9412 | Kind = | ||||||||
9413 | AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; | ||||||||
9414 | return Compatible; | ||||||||
9415 | } | ||||||||
9416 | } | ||||||||
9417 | |||||||||
9418 | return Incompatible; | ||||||||
9419 | } | ||||||||
9420 | |||||||||
9421 | // Conversions to block pointers. | ||||||||
9422 | if (isa<BlockPointerType>(LHSType)) { | ||||||||
9423 | // U^ -> T^ | ||||||||
9424 | if (RHSType->isBlockPointerType()) { | ||||||||
9425 | LangAS AddrSpaceL = LHSType->getAs<BlockPointerType>() | ||||||||
9426 | ->getPointeeType() | ||||||||
9427 | .getAddressSpace(); | ||||||||
9428 | LangAS AddrSpaceR = RHSType->getAs<BlockPointerType>() | ||||||||
9429 | ->getPointeeType() | ||||||||
9430 | .getAddressSpace(); | ||||||||
9431 | Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; | ||||||||
9432 | return checkBlockPointerTypesForAssignment(*this, LHSType, RHSType); | ||||||||
9433 | } | ||||||||
9434 | |||||||||
9435 | // int or null -> T^ | ||||||||
9436 | if (RHSType->isIntegerType()) { | ||||||||
9437 | Kind = CK_IntegralToPointer; // FIXME: null | ||||||||
9438 | return IntToBlockPointer; | ||||||||
9439 | } | ||||||||
9440 | |||||||||
9441 | // id -> T^ | ||||||||
9442 | if (getLangOpts().ObjC && RHSType->isObjCIdType()) { | ||||||||
9443 | Kind = CK_AnyPointerToBlockPointerCast; | ||||||||
9444 | return Compatible; | ||||||||
9445 | } | ||||||||
9446 | |||||||||
9447 | // void* -> T^ | ||||||||
9448 | if (const PointerType *RHSPT = RHSType->getAs<PointerType>()) | ||||||||
9449 | if (RHSPT->getPointeeType()->isVoidType()) { | ||||||||
9450 | Kind = CK_AnyPointerToBlockPointerCast; | ||||||||
9451 | return Compatible; | ||||||||
9452 | } | ||||||||
9453 | |||||||||
9454 | return Incompatible; | ||||||||
9455 | } | ||||||||
9456 | |||||||||
9457 | // Conversions to Objective-C pointers. | ||||||||
9458 | if (isa<ObjCObjectPointerType>(LHSType)) { | ||||||||
9459 | // A* -> B* | ||||||||
9460 | if (RHSType->isObjCObjectPointerType()) { | ||||||||
9461 | Kind = CK_BitCast; | ||||||||
9462 | Sema::AssignConvertType result = | ||||||||
9463 | checkObjCPointerTypesForAssignment(*this, LHSType, RHSType); | ||||||||
9464 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||||||
9465 | result == Compatible && | ||||||||
9466 | !CheckObjCARCUnavailableWeakConversion(OrigLHSType, RHSType)) | ||||||||
9467 | result = IncompatibleObjCWeakRef; | ||||||||
9468 | return result; | ||||||||
9469 | } | ||||||||
9470 | |||||||||
9471 | // int or null -> A* | ||||||||
9472 | if (RHSType->isIntegerType()) { | ||||||||
9473 | Kind = CK_IntegralToPointer; // FIXME: null | ||||||||
9474 | return IntToPointer; | ||||||||
9475 | } | ||||||||
9476 | |||||||||
9477 | // In general, C pointers are not compatible with ObjC object pointers, | ||||||||
9478 | // with two exceptions: | ||||||||
9479 | if (isa<PointerType>(RHSType)) { | ||||||||
9480 | Kind = CK_CPointerToObjCPointerCast; | ||||||||
9481 | |||||||||
9482 | // - conversions from 'void*' | ||||||||
9483 | if (RHSType->isVoidPointerType()) { | ||||||||
9484 | return Compatible; | ||||||||
9485 | } | ||||||||
9486 | |||||||||
9487 | // - conversions to 'Class' from its redefinition type | ||||||||
9488 | if (LHSType->isObjCClassType() && | ||||||||
9489 | Context.hasSameType(RHSType, | ||||||||
9490 | Context.getObjCClassRedefinitionType())) { | ||||||||
9491 | return Compatible; | ||||||||
9492 | } | ||||||||
9493 | |||||||||
9494 | return IncompatiblePointer; | ||||||||
9495 | } | ||||||||
9496 | |||||||||
9497 | // Only under strict condition T^ is compatible with an Objective-C pointer. | ||||||||
9498 | if (RHSType->isBlockPointerType() && | ||||||||
9499 | LHSType->isBlockCompatibleObjCPointerType(Context)) { | ||||||||
9500 | if (ConvertRHS) | ||||||||
9501 | maybeExtendBlockObject(RHS); | ||||||||
9502 | Kind = CK_BlockPointerToObjCPointerCast; | ||||||||
9503 | return Compatible; | ||||||||
9504 | } | ||||||||
9505 | |||||||||
9506 | return Incompatible; | ||||||||
9507 | } | ||||||||
9508 | |||||||||
9509 | // Conversions from pointers that are not covered by the above. | ||||||||
9510 | if (isa<PointerType>(RHSType)) { | ||||||||
9511 | // T* -> _Bool | ||||||||
9512 | if (LHSType == Context.BoolTy) { | ||||||||
9513 | Kind = CK_PointerToBoolean; | ||||||||
9514 | return Compatible; | ||||||||
9515 | } | ||||||||
9516 | |||||||||
9517 | // T* -> int | ||||||||
9518 | if (LHSType->isIntegerType()) { | ||||||||
9519 | Kind = CK_PointerToIntegral; | ||||||||
9520 | return PointerToInt; | ||||||||
9521 | } | ||||||||
9522 | |||||||||
9523 | return Incompatible; | ||||||||
9524 | } | ||||||||
9525 | |||||||||
9526 | // Conversions from Objective-C pointers that are not covered by the above. | ||||||||
9527 | if (isa<ObjCObjectPointerType>(RHSType)) { | ||||||||
9528 | // T* -> _Bool | ||||||||
9529 | if (LHSType == Context.BoolTy) { | ||||||||
9530 | Kind = CK_PointerToBoolean; | ||||||||
9531 | return Compatible; | ||||||||
9532 | } | ||||||||
9533 | |||||||||
9534 | // T* -> int | ||||||||
9535 | if (LHSType->isIntegerType()) { | ||||||||
9536 | Kind = CK_PointerToIntegral; | ||||||||
9537 | return PointerToInt; | ||||||||
9538 | } | ||||||||
9539 | |||||||||
9540 | return Incompatible; | ||||||||
9541 | } | ||||||||
9542 | |||||||||
9543 | // struct A -> struct B | ||||||||
9544 | if (isa<TagType>(LHSType) && isa<TagType>(RHSType)) { | ||||||||
9545 | if (Context.typesAreCompatible(LHSType, RHSType)) { | ||||||||
9546 | Kind = CK_NoOp; | ||||||||
9547 | return Compatible; | ||||||||
9548 | } | ||||||||
9549 | } | ||||||||
9550 | |||||||||
9551 | if (LHSType->isSamplerT() && RHSType->isIntegerType()) { | ||||||||
9552 | Kind = CK_IntToOCLSampler; | ||||||||
9553 | return Compatible; | ||||||||
9554 | } | ||||||||
9555 | |||||||||
9556 | return Incompatible; | ||||||||
9557 | } | ||||||||
9558 | |||||||||
9559 | /// Constructs a transparent union from an expression that is | ||||||||
9560 | /// used to initialize the transparent union. | ||||||||
9561 | static void ConstructTransparentUnion(Sema &S, ASTContext &C, | ||||||||
9562 | ExprResult &EResult, QualType UnionType, | ||||||||
9563 | FieldDecl *Field) { | ||||||||
9564 | // Build an initializer list that designates the appropriate member | ||||||||
9565 | // of the transparent union. | ||||||||
9566 | Expr *E = EResult.get(); | ||||||||
9567 | InitListExpr *Initializer = new (C) InitListExpr(C, SourceLocation(), | ||||||||
9568 | E, SourceLocation()); | ||||||||
9569 | Initializer->setType(UnionType); | ||||||||
9570 | Initializer->setInitializedFieldInUnion(Field); | ||||||||
9571 | |||||||||
9572 | // Build a compound literal constructing a value of the transparent | ||||||||
9573 | // union type from this initializer list. | ||||||||
9574 | TypeSourceInfo *unionTInfo = C.getTrivialTypeSourceInfo(UnionType); | ||||||||
9575 | EResult = new (C) CompoundLiteralExpr(SourceLocation(), unionTInfo, UnionType, | ||||||||
9576 | VK_PRValue, Initializer, false); | ||||||||
9577 | } | ||||||||
9578 | |||||||||
9579 | Sema::AssignConvertType | ||||||||
9580 | Sema::CheckTransparentUnionArgumentConstraints(QualType ArgType, | ||||||||
9581 | ExprResult &RHS) { | ||||||||
9582 | QualType RHSType = RHS.get()->getType(); | ||||||||
9583 | |||||||||
9584 | // If the ArgType is a Union type, we want to handle a potential | ||||||||
9585 | // transparent_union GCC extension. | ||||||||
9586 | const RecordType *UT = ArgType->getAsUnionType(); | ||||||||
9587 | if (!UT || !UT->getDecl()->hasAttr<TransparentUnionAttr>()) | ||||||||
9588 | return Incompatible; | ||||||||
9589 | |||||||||
9590 | // The field to initialize within the transparent union. | ||||||||
9591 | RecordDecl *UD = UT->getDecl(); | ||||||||
9592 | FieldDecl *InitField = nullptr; | ||||||||
9593 | // It's compatible if the expression matches any of the fields. | ||||||||
9594 | for (auto *it : UD->fields()) { | ||||||||
9595 | if (it->getType()->isPointerType()) { | ||||||||
9596 | // If the transparent union contains a pointer type, we allow: | ||||||||
9597 | // 1) void pointer | ||||||||
9598 | // 2) null pointer constant | ||||||||
9599 | if (RHSType->isPointerType()) | ||||||||
9600 | if (RHSType->castAs<PointerType>()->getPointeeType()->isVoidType()) { | ||||||||
9601 | RHS = ImpCastExprToType(RHS.get(), it->getType(), CK_BitCast); | ||||||||
9602 | InitField = it; | ||||||||
9603 | break; | ||||||||
9604 | } | ||||||||
9605 | |||||||||
9606 | if (RHS.get()->isNullPointerConstant(Context, | ||||||||
9607 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
9608 | RHS = ImpCastExprToType(RHS.get(), it->getType(), | ||||||||
9609 | CK_NullToPointer); | ||||||||
9610 | InitField = it; | ||||||||
9611 | break; | ||||||||
9612 | } | ||||||||
9613 | } | ||||||||
9614 | |||||||||
9615 | CastKind Kind; | ||||||||
9616 | if (CheckAssignmentConstraints(it->getType(), RHS, Kind) | ||||||||
9617 | == Compatible) { | ||||||||
9618 | RHS = ImpCastExprToType(RHS.get(), it->getType(), Kind); | ||||||||
9619 | InitField = it; | ||||||||
9620 | break; | ||||||||
9621 | } | ||||||||
9622 | } | ||||||||
9623 | |||||||||
9624 | if (!InitField) | ||||||||
9625 | return Incompatible; | ||||||||
9626 | |||||||||
9627 | ConstructTransparentUnion(*this, Context, RHS, ArgType, InitField); | ||||||||
9628 | return Compatible; | ||||||||
9629 | } | ||||||||
9630 | |||||||||
9631 | Sema::AssignConvertType | ||||||||
9632 | Sema::CheckSingleAssignmentConstraints(QualType LHSType, ExprResult &CallerRHS, | ||||||||
9633 | bool Diagnose, | ||||||||
9634 | bool DiagnoseCFAudited, | ||||||||
9635 | bool ConvertRHS) { | ||||||||
9636 | // We need to be able to tell the caller whether we diagnosed a problem, if | ||||||||
9637 | // they ask us to issue diagnostics. | ||||||||
9638 | assert((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed")(static_cast <bool> ((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed") ? void (0) : __assert_fail ("(ConvertRHS || !Diagnose) && \"can't indicate whether we diagnosed\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9638, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9639 | |||||||||
9640 | // If ConvertRHS is false, we want to leave the caller's RHS untouched. Sadly, | ||||||||
9641 | // we can't avoid *all* modifications at the moment, so we need some somewhere | ||||||||
9642 | // to put the updated value. | ||||||||
9643 | ExprResult LocalRHS = CallerRHS; | ||||||||
9644 | ExprResult &RHS = ConvertRHS ? CallerRHS : LocalRHS; | ||||||||
9645 | |||||||||
9646 | if (const auto *LHSPtrType = LHSType->getAs<PointerType>()) { | ||||||||
9647 | if (const auto *RHSPtrType = RHS.get()->getType()->getAs<PointerType>()) { | ||||||||
9648 | if (RHSPtrType->getPointeeType()->hasAttr(attr::NoDeref) && | ||||||||
9649 | !LHSPtrType->getPointeeType()->hasAttr(attr::NoDeref)) { | ||||||||
9650 | Diag(RHS.get()->getExprLoc(), | ||||||||
9651 | diag::warn_noderef_to_dereferenceable_pointer) | ||||||||
9652 | << RHS.get()->getSourceRange(); | ||||||||
9653 | } | ||||||||
9654 | } | ||||||||
9655 | } | ||||||||
9656 | |||||||||
9657 | if (getLangOpts().CPlusPlus) { | ||||||||
9658 | if (!LHSType->isRecordType() && !LHSType->isAtomicType()) { | ||||||||
9659 | // C++ 5.17p3: If the left operand is not of class type, the | ||||||||
9660 | // expression is implicitly converted (C++ 4) to the | ||||||||
9661 | // cv-unqualified type of the left operand. | ||||||||
9662 | QualType RHSType = RHS.get()->getType(); | ||||||||
9663 | if (Diagnose) { | ||||||||
9664 | RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||||||
9665 | AA_Assigning); | ||||||||
9666 | } else { | ||||||||
9667 | ImplicitConversionSequence ICS = | ||||||||
9668 | TryImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||||||
9669 | /*SuppressUserConversions=*/false, | ||||||||
9670 | AllowedExplicit::None, | ||||||||
9671 | /*InOverloadResolution=*/false, | ||||||||
9672 | /*CStyle=*/false, | ||||||||
9673 | /*AllowObjCWritebackConversion=*/false); | ||||||||
9674 | if (ICS.isFailure()) | ||||||||
9675 | return Incompatible; | ||||||||
9676 | RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||||||
9677 | ICS, AA_Assigning); | ||||||||
9678 | } | ||||||||
9679 | if (RHS.isInvalid()) | ||||||||
9680 | return Incompatible; | ||||||||
9681 | Sema::AssignConvertType result = Compatible; | ||||||||
9682 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||||||
9683 | !CheckObjCARCUnavailableWeakConversion(LHSType, RHSType)) | ||||||||
9684 | result = IncompatibleObjCWeakRef; | ||||||||
9685 | return result; | ||||||||
9686 | } | ||||||||
9687 | |||||||||
9688 | // FIXME: Currently, we fall through and treat C++ classes like C | ||||||||
9689 | // structures. | ||||||||
9690 | // FIXME: We also fall through for atomics; not sure what should | ||||||||
9691 | // happen there, though. | ||||||||
9692 | } else if (RHS.get()->getType() == Context.OverloadTy) { | ||||||||
9693 | // As a set of extensions to C, we support overloading on functions. These | ||||||||
9694 | // functions need to be resolved here. | ||||||||
9695 | DeclAccessPair DAP; | ||||||||
9696 | if (FunctionDecl *FD = ResolveAddressOfOverloadedFunction( | ||||||||
9697 | RHS.get(), LHSType, /*Complain=*/false, DAP)) | ||||||||
9698 | RHS = FixOverloadedFunctionReference(RHS.get(), DAP, FD); | ||||||||
9699 | else | ||||||||
9700 | return Incompatible; | ||||||||
9701 | } | ||||||||
9702 | |||||||||
9703 | // C99 6.5.16.1p1: the left operand is a pointer and the right is | ||||||||
9704 | // a null pointer constant. | ||||||||
9705 | if ((LHSType->isPointerType() || LHSType->isObjCObjectPointerType() || | ||||||||
9706 | LHSType->isBlockPointerType()) && | ||||||||
9707 | RHS.get()->isNullPointerConstant(Context, | ||||||||
9708 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
9709 | if (Diagnose || ConvertRHS) { | ||||||||
9710 | CastKind Kind; | ||||||||
9711 | CXXCastPath Path; | ||||||||
9712 | CheckPointerConversion(RHS.get(), LHSType, Kind, Path, | ||||||||
9713 | /*IgnoreBaseAccess=*/false, Diagnose); | ||||||||
9714 | if (ConvertRHS) | ||||||||
9715 | RHS = ImpCastExprToType(RHS.get(), LHSType, Kind, VK_PRValue, &Path); | ||||||||
9716 | } | ||||||||
9717 | return Compatible; | ||||||||
9718 | } | ||||||||
9719 | |||||||||
9720 | // OpenCL queue_t type assignment. | ||||||||
9721 | if (LHSType->isQueueT() && RHS.get()->isNullPointerConstant( | ||||||||
9722 | Context, Expr::NPC_ValueDependentIsNull)) { | ||||||||
9723 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
9724 | return Compatible; | ||||||||
9725 | } | ||||||||
9726 | |||||||||
9727 | // This check seems unnatural, however it is necessary to ensure the proper | ||||||||
9728 | // conversion of functions/arrays. If the conversion were done for all | ||||||||
9729 | // DeclExpr's (created by ActOnIdExpression), it would mess up the unary | ||||||||
9730 | // expressions that suppress this implicit conversion (&, sizeof). | ||||||||
9731 | // | ||||||||
9732 | // Suppress this for references: C++ 8.5.3p5. | ||||||||
9733 | if (!LHSType->isReferenceType()) { | ||||||||
9734 | // FIXME: We potentially allocate here even if ConvertRHS is false. | ||||||||
9735 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get(), Diagnose); | ||||||||
9736 | if (RHS.isInvalid()) | ||||||||
9737 | return Incompatible; | ||||||||
9738 | } | ||||||||
9739 | CastKind Kind; | ||||||||
9740 | Sema::AssignConvertType result = | ||||||||
9741 | CheckAssignmentConstraints(LHSType, RHS, Kind, ConvertRHS); | ||||||||
9742 | |||||||||
9743 | // C99 6.5.16.1p2: The value of the right operand is converted to the | ||||||||
9744 | // type of the assignment expression. | ||||||||
9745 | // CheckAssignmentConstraints allows the left-hand side to be a reference, | ||||||||
9746 | // so that we can use references in built-in functions even in C. | ||||||||
9747 | // The getNonReferenceType() call makes sure that the resulting expression | ||||||||
9748 | // does not have reference type. | ||||||||
9749 | if (result != Incompatible && RHS.get()->getType() != LHSType) { | ||||||||
9750 | QualType Ty = LHSType.getNonLValueExprType(Context); | ||||||||
9751 | Expr *E = RHS.get(); | ||||||||
9752 | |||||||||
9753 | // Check for various Objective-C errors. If we are not reporting | ||||||||
9754 | // diagnostics and just checking for errors, e.g., during overload | ||||||||
9755 | // resolution, return Incompatible to indicate the failure. | ||||||||
9756 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||||||
9757 | CheckObjCConversion(SourceRange(), Ty, E, CCK_ImplicitConversion, | ||||||||
9758 | Diagnose, DiagnoseCFAudited) != ACR_okay) { | ||||||||
9759 | if (!Diagnose) | ||||||||
9760 | return Incompatible; | ||||||||
9761 | } | ||||||||
9762 | if (getLangOpts().ObjC && | ||||||||
9763 | (CheckObjCBridgeRelatedConversions(E->getBeginLoc(), LHSType, | ||||||||
9764 | E->getType(), E, Diagnose) || | ||||||||
9765 | CheckConversionToObjCLiteral(LHSType, E, Diagnose))) { | ||||||||
9766 | if (!Diagnose) | ||||||||
9767 | return Incompatible; | ||||||||
9768 | // Replace the expression with a corrected version and continue so we | ||||||||
9769 | // can find further errors. | ||||||||
9770 | RHS = E; | ||||||||
9771 | return Compatible; | ||||||||
9772 | } | ||||||||
9773 | |||||||||
9774 | if (ConvertRHS) | ||||||||
9775 | RHS = ImpCastExprToType(E, Ty, Kind); | ||||||||
9776 | } | ||||||||
9777 | |||||||||
9778 | return result; | ||||||||
9779 | } | ||||||||
9780 | |||||||||
9781 | namespace { | ||||||||
9782 | /// The original operand to an operator, prior to the application of the usual | ||||||||
9783 | /// arithmetic conversions and converting the arguments of a builtin operator | ||||||||
9784 | /// candidate. | ||||||||
9785 | struct OriginalOperand { | ||||||||
9786 | explicit OriginalOperand(Expr *Op) : Orig(Op), Conversion(nullptr) { | ||||||||
9787 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(Op)) | ||||||||
9788 | Op = MTE->getSubExpr(); | ||||||||
9789 | if (auto *BTE = dyn_cast<CXXBindTemporaryExpr>(Op)) | ||||||||
9790 | Op = BTE->getSubExpr(); | ||||||||
9791 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(Op)) { | ||||||||
9792 | Orig = ICE->getSubExprAsWritten(); | ||||||||
9793 | Conversion = ICE->getConversionFunction(); | ||||||||
9794 | } | ||||||||
9795 | } | ||||||||
9796 | |||||||||
9797 | QualType getType() const { return Orig->getType(); } | ||||||||
9798 | |||||||||
9799 | Expr *Orig; | ||||||||
9800 | NamedDecl *Conversion; | ||||||||
9801 | }; | ||||||||
9802 | } | ||||||||
9803 | |||||||||
9804 | QualType Sema::InvalidOperands(SourceLocation Loc, ExprResult &LHS, | ||||||||
9805 | ExprResult &RHS) { | ||||||||
9806 | OriginalOperand OrigLHS(LHS.get()), OrigRHS(RHS.get()); | ||||||||
9807 | |||||||||
9808 | Diag(Loc, diag::err_typecheck_invalid_operands) | ||||||||
9809 | << OrigLHS.getType() << OrigRHS.getType() | ||||||||
9810 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
9811 | |||||||||
9812 | // If a user-defined conversion was applied to either of the operands prior | ||||||||
9813 | // to applying the built-in operator rules, tell the user about it. | ||||||||
9814 | if (OrigLHS.Conversion) { | ||||||||
9815 | Diag(OrigLHS.Conversion->getLocation(), | ||||||||
9816 | diag::note_typecheck_invalid_operands_converted) | ||||||||
9817 | << 0 << LHS.get()->getType(); | ||||||||
9818 | } | ||||||||
9819 | if (OrigRHS.Conversion) { | ||||||||
9820 | Diag(OrigRHS.Conversion->getLocation(), | ||||||||
9821 | diag::note_typecheck_invalid_operands_converted) | ||||||||
9822 | << 1 << RHS.get()->getType(); | ||||||||
9823 | } | ||||||||
9824 | |||||||||
9825 | return QualType(); | ||||||||
9826 | } | ||||||||
9827 | |||||||||
9828 | // Diagnose cases where a scalar was implicitly converted to a vector and | ||||||||
9829 | // diagnose the underlying types. Otherwise, diagnose the error | ||||||||
9830 | // as invalid vector logical operands for non-C++ cases. | ||||||||
9831 | QualType Sema::InvalidLogicalVectorOperands(SourceLocation Loc, ExprResult &LHS, | ||||||||
9832 | ExprResult &RHS) { | ||||||||
9833 | QualType LHSType = LHS.get()->IgnoreImpCasts()->getType(); | ||||||||
9834 | QualType RHSType = RHS.get()->IgnoreImpCasts()->getType(); | ||||||||
9835 | |||||||||
9836 | bool LHSNatVec = LHSType->isVectorType(); | ||||||||
9837 | bool RHSNatVec = RHSType->isVectorType(); | ||||||||
9838 | |||||||||
9839 | if (!(LHSNatVec && RHSNatVec)) { | ||||||||
9840 | Expr *Vector = LHSNatVec ? LHS.get() : RHS.get(); | ||||||||
9841 | Expr *NonVector = !LHSNatVec ? LHS.get() : RHS.get(); | ||||||||
9842 | Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) | ||||||||
9843 | << 0 << Vector->getType() << NonVector->IgnoreImpCasts()->getType() | ||||||||
9844 | << Vector->getSourceRange(); | ||||||||
9845 | return QualType(); | ||||||||
9846 | } | ||||||||
9847 | |||||||||
9848 | Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) | ||||||||
9849 | << 1 << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
9850 | << RHS.get()->getSourceRange(); | ||||||||
9851 | |||||||||
9852 | return QualType(); | ||||||||
9853 | } | ||||||||
9854 | |||||||||
9855 | /// Try to convert a value of non-vector type to a vector type by converting | ||||||||
9856 | /// the type to the element type of the vector and then performing a splat. | ||||||||
9857 | /// If the language is OpenCL, we only use conversions that promote scalar | ||||||||
9858 | /// rank; for C, Obj-C, and C++ we allow any real scalar conversion except | ||||||||
9859 | /// for float->int. | ||||||||
9860 | /// | ||||||||
9861 | /// OpenCL V2.0 6.2.6.p2: | ||||||||
9862 | /// An error shall occur if any scalar operand type has greater rank | ||||||||
9863 | /// than the type of the vector element. | ||||||||
9864 | /// | ||||||||
9865 | /// \param scalar - if non-null, actually perform the conversions | ||||||||
9866 | /// \return true if the operation fails (but without diagnosing the failure) | ||||||||
9867 | static bool tryVectorConvertAndSplat(Sema &S, ExprResult *scalar, | ||||||||
9868 | QualType scalarTy, | ||||||||
9869 | QualType vectorEltTy, | ||||||||
9870 | QualType vectorTy, | ||||||||
9871 | unsigned &DiagID) { | ||||||||
9872 | // The conversion to apply to the scalar before splatting it, | ||||||||
9873 | // if necessary. | ||||||||
9874 | CastKind scalarCast = CK_NoOp; | ||||||||
9875 | |||||||||
9876 | if (vectorEltTy->isIntegralType(S.Context)) { | ||||||||
9877 | if (S.getLangOpts().OpenCL && (scalarTy->isRealFloatingType() || | ||||||||
9878 | (scalarTy->isIntegerType() && | ||||||||
9879 | S.Context.getIntegerTypeOrder(vectorEltTy, scalarTy) < 0))) { | ||||||||
9880 | DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; | ||||||||
9881 | return true; | ||||||||
9882 | } | ||||||||
9883 | if (!scalarTy->isIntegralType(S.Context)) | ||||||||
9884 | return true; | ||||||||
9885 | scalarCast = CK_IntegralCast; | ||||||||
9886 | } else if (vectorEltTy->isRealFloatingType()) { | ||||||||
9887 | if (scalarTy->isRealFloatingType()) { | ||||||||
9888 | if (S.getLangOpts().OpenCL && | ||||||||
9889 | S.Context.getFloatingTypeOrder(vectorEltTy, scalarTy) < 0) { | ||||||||
9890 | DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; | ||||||||
9891 | return true; | ||||||||
9892 | } | ||||||||
9893 | scalarCast = CK_FloatingCast; | ||||||||
9894 | } | ||||||||
9895 | else if (scalarTy->isIntegralType(S.Context)) | ||||||||
9896 | scalarCast = CK_IntegralToFloating; | ||||||||
9897 | else | ||||||||
9898 | return true; | ||||||||
9899 | } else { | ||||||||
9900 | return true; | ||||||||
9901 | } | ||||||||
9902 | |||||||||
9903 | // Adjust scalar if desired. | ||||||||
9904 | if (scalar) { | ||||||||
9905 | if (scalarCast != CK_NoOp) | ||||||||
9906 | *scalar = S.ImpCastExprToType(scalar->get(), vectorEltTy, scalarCast); | ||||||||
9907 | *scalar = S.ImpCastExprToType(scalar->get(), vectorTy, CK_VectorSplat); | ||||||||
9908 | } | ||||||||
9909 | return false; | ||||||||
9910 | } | ||||||||
9911 | |||||||||
9912 | /// Convert vector E to a vector with the same number of elements but different | ||||||||
9913 | /// element type. | ||||||||
9914 | static ExprResult convertVector(Expr *E, QualType ElementType, Sema &S) { | ||||||||
9915 | const auto *VecTy = E->getType()->getAs<VectorType>(); | ||||||||
9916 | assert(VecTy && "Expression E must be a vector")(static_cast <bool> (VecTy && "Expression E must be a vector" ) ? void (0) : __assert_fail ("VecTy && \"Expression E must be a vector\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 9916, __extension__ __PRETTY_FUNCTION__)); | ||||||||
9917 | QualType NewVecTy = S.Context.getVectorType(ElementType, | ||||||||
9918 | VecTy->getNumElements(), | ||||||||
9919 | VecTy->getVectorKind()); | ||||||||
9920 | |||||||||
9921 | // Look through the implicit cast. Return the subexpression if its type is | ||||||||
9922 | // NewVecTy. | ||||||||
9923 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
9924 | if (ICE->getSubExpr()->getType() == NewVecTy) | ||||||||
9925 | return ICE->getSubExpr(); | ||||||||
9926 | |||||||||
9927 | auto Cast = ElementType->isIntegerType() ? CK_IntegralCast : CK_FloatingCast; | ||||||||
9928 | return S.ImpCastExprToType(E, NewVecTy, Cast); | ||||||||
9929 | } | ||||||||
9930 | |||||||||
9931 | /// Test if a (constant) integer Int can be casted to another integer type | ||||||||
9932 | /// IntTy without losing precision. | ||||||||
9933 | static bool canConvertIntToOtherIntTy(Sema &S, ExprResult *Int, | ||||||||
9934 | QualType OtherIntTy) { | ||||||||
9935 | QualType IntTy = Int->get()->getType().getUnqualifiedType(); | ||||||||
9936 | |||||||||
9937 | // Reject cases where the value of the Int is unknown as that would | ||||||||
9938 | // possibly cause truncation, but accept cases where the scalar can be | ||||||||
9939 | // demoted without loss of precision. | ||||||||
9940 | Expr::EvalResult EVResult; | ||||||||
9941 | bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); | ||||||||
9942 | int Order = S.Context.getIntegerTypeOrder(OtherIntTy, IntTy); | ||||||||
9943 | bool IntSigned = IntTy->hasSignedIntegerRepresentation(); | ||||||||
9944 | bool OtherIntSigned = OtherIntTy->hasSignedIntegerRepresentation(); | ||||||||
9945 | |||||||||
9946 | if (CstInt) { | ||||||||
9947 | // If the scalar is constant and is of a higher order and has more active | ||||||||
9948 | // bits that the vector element type, reject it. | ||||||||
9949 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||||||
9950 | unsigned NumBits = IntSigned | ||||||||
9951 | ? (Result.isNegative() ? Result.getMinSignedBits() | ||||||||
9952 | : Result.getActiveBits()) | ||||||||
9953 | : Result.getActiveBits(); | ||||||||
9954 | if (Order < 0 && S.Context.getIntWidth(OtherIntTy) < NumBits) | ||||||||
9955 | return true; | ||||||||
9956 | |||||||||
9957 | // If the signedness of the scalar type and the vector element type | ||||||||
9958 | // differs and the number of bits is greater than that of the vector | ||||||||
9959 | // element reject it. | ||||||||
9960 | return (IntSigned != OtherIntSigned && | ||||||||
9961 | NumBits > S.Context.getIntWidth(OtherIntTy)); | ||||||||
9962 | } | ||||||||
9963 | |||||||||
9964 | // Reject cases where the value of the scalar is not constant and it's | ||||||||
9965 | // order is greater than that of the vector element type. | ||||||||
9966 | return (Order < 0); | ||||||||
9967 | } | ||||||||
9968 | |||||||||
9969 | /// Test if a (constant) integer Int can be casted to floating point type | ||||||||
9970 | /// FloatTy without losing precision. | ||||||||
9971 | static bool canConvertIntTyToFloatTy(Sema &S, ExprResult *Int, | ||||||||
9972 | QualType FloatTy) { | ||||||||
9973 | QualType IntTy = Int->get()->getType().getUnqualifiedType(); | ||||||||
9974 | |||||||||
9975 | // Determine if the integer constant can be expressed as a floating point | ||||||||
9976 | // number of the appropriate type. | ||||||||
9977 | Expr::EvalResult EVResult; | ||||||||
9978 | bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); | ||||||||
9979 | |||||||||
9980 | uint64_t Bits = 0; | ||||||||
9981 | if (CstInt) { | ||||||||
9982 | // Reject constants that would be truncated if they were converted to | ||||||||
9983 | // the floating point type. Test by simple to/from conversion. | ||||||||
9984 | // FIXME: Ideally the conversion to an APFloat and from an APFloat | ||||||||
9985 | // could be avoided if there was a convertFromAPInt method | ||||||||
9986 | // which could signal back if implicit truncation occurred. | ||||||||
9987 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||||||
9988 | llvm::APFloat Float(S.Context.getFloatTypeSemantics(FloatTy)); | ||||||||
9989 | Float.convertFromAPInt(Result, IntTy->hasSignedIntegerRepresentation(), | ||||||||
9990 | llvm::APFloat::rmTowardZero); | ||||||||
9991 | llvm::APSInt ConvertBack(S.Context.getIntWidth(IntTy), | ||||||||
9992 | !IntTy->hasSignedIntegerRepresentation()); | ||||||||
9993 | bool Ignored = false; | ||||||||
9994 | Float.convertToInteger(ConvertBack, llvm::APFloat::rmNearestTiesToEven, | ||||||||
9995 | &Ignored); | ||||||||
9996 | if (Result != ConvertBack) | ||||||||
9997 | return true; | ||||||||
9998 | } else { | ||||||||
9999 | // Reject types that cannot be fully encoded into the mantissa of | ||||||||
10000 | // the float. | ||||||||
10001 | Bits = S.Context.getTypeSize(IntTy); | ||||||||
10002 | unsigned FloatPrec = llvm::APFloat::semanticsPrecision( | ||||||||
10003 | S.Context.getFloatTypeSemantics(FloatTy)); | ||||||||
10004 | if (Bits > FloatPrec) | ||||||||
10005 | return true; | ||||||||
10006 | } | ||||||||
10007 | |||||||||
10008 | return false; | ||||||||
10009 | } | ||||||||
10010 | |||||||||
10011 | /// Attempt to convert and splat Scalar into a vector whose types matches | ||||||||
10012 | /// Vector following GCC conversion rules. The rule is that implicit | ||||||||
10013 | /// conversion can occur when Scalar can be casted to match Vector's element | ||||||||
10014 | /// type without causing truncation of Scalar. | ||||||||
10015 | static bool tryGCCVectorConvertAndSplat(Sema &S, ExprResult *Scalar, | ||||||||
10016 | ExprResult *Vector) { | ||||||||
10017 | QualType ScalarTy = Scalar->get()->getType().getUnqualifiedType(); | ||||||||
10018 | QualType VectorTy = Vector->get()->getType().getUnqualifiedType(); | ||||||||
10019 | const VectorType *VT = VectorTy->getAs<VectorType>(); | ||||||||
10020 | |||||||||
10021 | assert(!isa<ExtVectorType>(VT) &&(static_cast <bool> (!isa<ExtVectorType>(VT) && "ExtVectorTypes should not be handled here!") ? void (0) : __assert_fail ("!isa<ExtVectorType>(VT) && \"ExtVectorTypes should not be handled here!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10022, __extension__ __PRETTY_FUNCTION__)) | ||||||||
10022 | "ExtVectorTypes should not be handled here!")(static_cast <bool> (!isa<ExtVectorType>(VT) && "ExtVectorTypes should not be handled here!") ? void (0) : __assert_fail ("!isa<ExtVectorType>(VT) && \"ExtVectorTypes should not be handled here!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10022, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10023 | |||||||||
10024 | QualType VectorEltTy = VT->getElementType(); | ||||||||
10025 | |||||||||
10026 | // Reject cases where the vector element type or the scalar element type are | ||||||||
10027 | // not integral or floating point types. | ||||||||
10028 | if (!VectorEltTy->isArithmeticType() || !ScalarTy->isArithmeticType()) | ||||||||
10029 | return true; | ||||||||
10030 | |||||||||
10031 | // The conversion to apply to the scalar before splatting it, | ||||||||
10032 | // if necessary. | ||||||||
10033 | CastKind ScalarCast = CK_NoOp; | ||||||||
10034 | |||||||||
10035 | // Accept cases where the vector elements are integers and the scalar is | ||||||||
10036 | // an integer. | ||||||||
10037 | // FIXME: Notionally if the scalar was a floating point value with a precise | ||||||||
10038 | // integral representation, we could cast it to an appropriate integer | ||||||||
10039 | // type and then perform the rest of the checks here. GCC will perform | ||||||||
10040 | // this conversion in some cases as determined by the input language. | ||||||||
10041 | // We should accept it on a language independent basis. | ||||||||
10042 | if (VectorEltTy->isIntegralType(S.Context) && | ||||||||
10043 | ScalarTy->isIntegralType(S.Context) && | ||||||||
10044 | S.Context.getIntegerTypeOrder(VectorEltTy, ScalarTy)) { | ||||||||
10045 | |||||||||
10046 | if (canConvertIntToOtherIntTy(S, Scalar, VectorEltTy)) | ||||||||
10047 | return true; | ||||||||
10048 | |||||||||
10049 | ScalarCast = CK_IntegralCast; | ||||||||
10050 | } else if (VectorEltTy->isIntegralType(S.Context) && | ||||||||
10051 | ScalarTy->isRealFloatingType()) { | ||||||||
10052 | if (S.Context.getTypeSize(VectorEltTy) == S.Context.getTypeSize(ScalarTy)) | ||||||||
10053 | ScalarCast = CK_FloatingToIntegral; | ||||||||
10054 | else | ||||||||
10055 | return true; | ||||||||
10056 | } else if (VectorEltTy->isRealFloatingType()) { | ||||||||
10057 | if (ScalarTy->isRealFloatingType()) { | ||||||||
10058 | |||||||||
10059 | // Reject cases where the scalar type is not a constant and has a higher | ||||||||
10060 | // Order than the vector element type. | ||||||||
10061 | llvm::APFloat Result(0.0); | ||||||||
10062 | |||||||||
10063 | // Determine whether this is a constant scalar. In the event that the | ||||||||
10064 | // value is dependent (and thus cannot be evaluated by the constant | ||||||||
10065 | // evaluator), skip the evaluation. This will then diagnose once the | ||||||||
10066 | // expression is instantiated. | ||||||||
10067 | bool CstScalar = Scalar->get()->isValueDependent() || | ||||||||
10068 | Scalar->get()->EvaluateAsFloat(Result, S.Context); | ||||||||
10069 | int Order = S.Context.getFloatingTypeOrder(VectorEltTy, ScalarTy); | ||||||||
10070 | if (!CstScalar && Order < 0) | ||||||||
10071 | return true; | ||||||||
10072 | |||||||||
10073 | // If the scalar cannot be safely casted to the vector element type, | ||||||||
10074 | // reject it. | ||||||||
10075 | if (CstScalar) { | ||||||||
10076 | bool Truncated = false; | ||||||||
10077 | Result.convert(S.Context.getFloatTypeSemantics(VectorEltTy), | ||||||||
10078 | llvm::APFloat::rmNearestTiesToEven, &Truncated); | ||||||||
10079 | if (Truncated) | ||||||||
10080 | return true; | ||||||||
10081 | } | ||||||||
10082 | |||||||||
10083 | ScalarCast = CK_FloatingCast; | ||||||||
10084 | } else if (ScalarTy->isIntegralType(S.Context)) { | ||||||||
10085 | if (canConvertIntTyToFloatTy(S, Scalar, VectorEltTy)) | ||||||||
10086 | return true; | ||||||||
10087 | |||||||||
10088 | ScalarCast = CK_IntegralToFloating; | ||||||||
10089 | } else | ||||||||
10090 | return true; | ||||||||
10091 | } else if (ScalarTy->isEnumeralType()) | ||||||||
10092 | return true; | ||||||||
10093 | |||||||||
10094 | // Adjust scalar if desired. | ||||||||
10095 | if (Scalar) { | ||||||||
10096 | if (ScalarCast != CK_NoOp) | ||||||||
10097 | *Scalar = S.ImpCastExprToType(Scalar->get(), VectorEltTy, ScalarCast); | ||||||||
10098 | *Scalar = S.ImpCastExprToType(Scalar->get(), VectorTy, CK_VectorSplat); | ||||||||
10099 | } | ||||||||
10100 | return false; | ||||||||
10101 | } | ||||||||
10102 | |||||||||
10103 | QualType Sema::CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
10104 | SourceLocation Loc, bool IsCompAssign, | ||||||||
10105 | bool AllowBothBool, | ||||||||
10106 | bool AllowBoolConversions) { | ||||||||
10107 | if (!IsCompAssign) { | ||||||||
10108 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
10109 | if (LHS.isInvalid()) | ||||||||
10110 | return QualType(); | ||||||||
10111 | } | ||||||||
10112 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
10113 | if (RHS.isInvalid()) | ||||||||
10114 | return QualType(); | ||||||||
10115 | |||||||||
10116 | // For conversion purposes, we ignore any qualifiers. | ||||||||
10117 | // For example, "const float" and "float" are equivalent. | ||||||||
10118 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||||||
10119 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||||||
10120 | |||||||||
10121 | const VectorType *LHSVecType = LHSType->getAs<VectorType>(); | ||||||||
10122 | const VectorType *RHSVecType = RHSType->getAs<VectorType>(); | ||||||||
10123 | assert(LHSVecType || RHSVecType)(static_cast <bool> (LHSVecType || RHSVecType) ? void ( 0) : __assert_fail ("LHSVecType || RHSVecType", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10123, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10124 | |||||||||
10125 | if ((LHSVecType && LHSVecType->getElementType()->isBFloat16Type()) || | ||||||||
10126 | (RHSVecType && RHSVecType->getElementType()->isBFloat16Type())) | ||||||||
10127 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10128 | |||||||||
10129 | // AltiVec-style "vector bool op vector bool" combinations are allowed | ||||||||
10130 | // for some operators but not others. | ||||||||
10131 | if (!AllowBothBool && | ||||||||
10132 | LHSVecType && LHSVecType->getVectorKind() == VectorType::AltiVecBool && | ||||||||
10133 | RHSVecType && RHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||||||
10134 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10135 | |||||||||
10136 | // If the vector types are identical, return. | ||||||||
10137 | if (Context.hasSameType(LHSType, RHSType)) | ||||||||
10138 | return LHSType; | ||||||||
10139 | |||||||||
10140 | // If we have compatible AltiVec and GCC vector types, use the AltiVec type. | ||||||||
10141 | if (LHSVecType && RHSVecType && | ||||||||
10142 | Context.areCompatibleVectorTypes(LHSType, RHSType)) { | ||||||||
10143 | if (isa<ExtVectorType>(LHSVecType)) { | ||||||||
10144 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
10145 | return LHSType; | ||||||||
10146 | } | ||||||||
10147 | |||||||||
10148 | if (!IsCompAssign) | ||||||||
10149 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||||||
10150 | return RHSType; | ||||||||
10151 | } | ||||||||
10152 | |||||||||
10153 | // AllowBoolConversions says that bool and non-bool AltiVec vectors | ||||||||
10154 | // can be mixed, with the result being the non-bool type. The non-bool | ||||||||
10155 | // operand must have integer element type. | ||||||||
10156 | if (AllowBoolConversions && LHSVecType && RHSVecType && | ||||||||
10157 | LHSVecType->getNumElements() == RHSVecType->getNumElements() && | ||||||||
10158 | (Context.getTypeSize(LHSVecType->getElementType()) == | ||||||||
10159 | Context.getTypeSize(RHSVecType->getElementType()))) { | ||||||||
10160 | if (LHSVecType->getVectorKind() == VectorType::AltiVecVector && | ||||||||
10161 | LHSVecType->getElementType()->isIntegerType() && | ||||||||
10162 | RHSVecType->getVectorKind() == VectorType::AltiVecBool) { | ||||||||
10163 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
10164 | return LHSType; | ||||||||
10165 | } | ||||||||
10166 | if (!IsCompAssign && | ||||||||
10167 | LHSVecType->getVectorKind() == VectorType::AltiVecBool && | ||||||||
10168 | RHSVecType->getVectorKind() == VectorType::AltiVecVector && | ||||||||
10169 | RHSVecType->getElementType()->isIntegerType()) { | ||||||||
10170 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||||||
10171 | return RHSType; | ||||||||
10172 | } | ||||||||
10173 | } | ||||||||
10174 | |||||||||
10175 | // Expressions containing fixed-length and sizeless SVE vectors are invalid | ||||||||
10176 | // since the ambiguity can affect the ABI. | ||||||||
10177 | auto IsSveConversion = [](QualType FirstType, QualType SecondType) { | ||||||||
10178 | const VectorType *VecType = SecondType->getAs<VectorType>(); | ||||||||
10179 | return FirstType->isSizelessBuiltinType() && VecType && | ||||||||
10180 | (VecType->getVectorKind() == VectorType::SveFixedLengthDataVector || | ||||||||
10181 | VecType->getVectorKind() == | ||||||||
10182 | VectorType::SveFixedLengthPredicateVector); | ||||||||
10183 | }; | ||||||||
10184 | |||||||||
10185 | if (IsSveConversion(LHSType, RHSType) || IsSveConversion(RHSType, LHSType)) { | ||||||||
10186 | Diag(Loc, diag::err_typecheck_sve_ambiguous) << LHSType << RHSType; | ||||||||
10187 | return QualType(); | ||||||||
10188 | } | ||||||||
10189 | |||||||||
10190 | // Expressions containing GNU and SVE (fixed or sizeless) vectors are invalid | ||||||||
10191 | // since the ambiguity can affect the ABI. | ||||||||
10192 | auto IsSveGnuConversion = [](QualType FirstType, QualType SecondType) { | ||||||||
10193 | const VectorType *FirstVecType = FirstType->getAs<VectorType>(); | ||||||||
10194 | const VectorType *SecondVecType = SecondType->getAs<VectorType>(); | ||||||||
10195 | |||||||||
10196 | if (FirstVecType && SecondVecType) | ||||||||
10197 | return FirstVecType->getVectorKind() == VectorType::GenericVector && | ||||||||
10198 | (SecondVecType->getVectorKind() == | ||||||||
10199 | VectorType::SveFixedLengthDataVector || | ||||||||
10200 | SecondVecType->getVectorKind() == | ||||||||
10201 | VectorType::SveFixedLengthPredicateVector); | ||||||||
10202 | |||||||||
10203 | return FirstType->isSizelessBuiltinType() && SecondVecType && | ||||||||
10204 | SecondVecType->getVectorKind() == VectorType::GenericVector; | ||||||||
10205 | }; | ||||||||
10206 | |||||||||
10207 | if (IsSveGnuConversion(LHSType, RHSType) || | ||||||||
10208 | IsSveGnuConversion(RHSType, LHSType)) { | ||||||||
10209 | Diag(Loc, diag::err_typecheck_sve_gnu_ambiguous) << LHSType << RHSType; | ||||||||
10210 | return QualType(); | ||||||||
10211 | } | ||||||||
10212 | |||||||||
10213 | // If there's a vector type and a scalar, try to convert the scalar to | ||||||||
10214 | // the vector element type and splat. | ||||||||
10215 | unsigned DiagID = diag::err_typecheck_vector_not_convertable; | ||||||||
10216 | if (!RHSVecType) { | ||||||||
10217 | if (isa<ExtVectorType>(LHSVecType)) { | ||||||||
10218 | if (!tryVectorConvertAndSplat(*this, &RHS, RHSType, | ||||||||
10219 | LHSVecType->getElementType(), LHSType, | ||||||||
10220 | DiagID)) | ||||||||
10221 | return LHSType; | ||||||||
10222 | } else { | ||||||||
10223 | if (!tryGCCVectorConvertAndSplat(*this, &RHS, &LHS)) | ||||||||
10224 | return LHSType; | ||||||||
10225 | } | ||||||||
10226 | } | ||||||||
10227 | if (!LHSVecType) { | ||||||||
10228 | if (isa<ExtVectorType>(RHSVecType)) { | ||||||||
10229 | if (!tryVectorConvertAndSplat(*this, (IsCompAssign ? nullptr : &LHS), | ||||||||
10230 | LHSType, RHSVecType->getElementType(), | ||||||||
10231 | RHSType, DiagID)) | ||||||||
10232 | return RHSType; | ||||||||
10233 | } else { | ||||||||
10234 | if (LHS.get()->isLValue() || | ||||||||
10235 | !tryGCCVectorConvertAndSplat(*this, &LHS, &RHS)) | ||||||||
10236 | return RHSType; | ||||||||
10237 | } | ||||||||
10238 | } | ||||||||
10239 | |||||||||
10240 | // FIXME: The code below also handles conversion between vectors and | ||||||||
10241 | // non-scalars, we should break this down into fine grained specific checks | ||||||||
10242 | // and emit proper diagnostics. | ||||||||
10243 | QualType VecType = LHSVecType ? LHSType : RHSType; | ||||||||
10244 | const VectorType *VT = LHSVecType ? LHSVecType : RHSVecType; | ||||||||
10245 | QualType OtherType = LHSVecType ? RHSType : LHSType; | ||||||||
10246 | ExprResult *OtherExpr = LHSVecType ? &RHS : &LHS; | ||||||||
10247 | if (isLaxVectorConversion(OtherType, VecType)) { | ||||||||
10248 | // If we're allowing lax vector conversions, only the total (data) size | ||||||||
10249 | // needs to be the same. For non compound assignment, if one of the types is | ||||||||
10250 | // scalar, the result is always the vector type. | ||||||||
10251 | if (!IsCompAssign) { | ||||||||
10252 | *OtherExpr = ImpCastExprToType(OtherExpr->get(), VecType, CK_BitCast); | ||||||||
10253 | return VecType; | ||||||||
10254 | // In a compound assignment, lhs += rhs, 'lhs' is a lvalue src, forbidding | ||||||||
10255 | // any implicit cast. Here, the 'rhs' should be implicit casted to 'lhs' | ||||||||
10256 | // type. Note that this is already done by non-compound assignments in | ||||||||
10257 | // CheckAssignmentConstraints. If it's a scalar type, only bitcast for | ||||||||
10258 | // <1 x T> -> T. The result is also a vector type. | ||||||||
10259 | } else if (OtherType->isExtVectorType() || OtherType->isVectorType() || | ||||||||
10260 | (OtherType->isScalarType() && VT->getNumElements() == 1)) { | ||||||||
10261 | ExprResult *RHSExpr = &RHS; | ||||||||
10262 | *RHSExpr = ImpCastExprToType(RHSExpr->get(), LHSType, CK_BitCast); | ||||||||
10263 | return VecType; | ||||||||
10264 | } | ||||||||
10265 | } | ||||||||
10266 | |||||||||
10267 | // Okay, the expression is invalid. | ||||||||
10268 | |||||||||
10269 | // If there's a non-vector, non-real operand, diagnose that. | ||||||||
10270 | if ((!RHSVecType && !RHSType->isRealType()) || | ||||||||
10271 | (!LHSVecType && !LHSType->isRealType())) { | ||||||||
10272 | Diag(Loc, diag::err_typecheck_vector_not_convertable_non_scalar) | ||||||||
10273 | << LHSType << RHSType | ||||||||
10274 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
10275 | return QualType(); | ||||||||
10276 | } | ||||||||
10277 | |||||||||
10278 | // OpenCL V1.1 6.2.6.p1: | ||||||||
10279 | // If the operands are of more than one vector type, then an error shall | ||||||||
10280 | // occur. Implicit conversions between vector types are not permitted, per | ||||||||
10281 | // section 6.2.1. | ||||||||
10282 | if (getLangOpts().OpenCL && | ||||||||
10283 | RHSVecType && isa<ExtVectorType>(RHSVecType) && | ||||||||
10284 | LHSVecType && isa<ExtVectorType>(LHSVecType)) { | ||||||||
10285 | Diag(Loc, diag::err_opencl_implicit_vector_conversion) << LHSType | ||||||||
10286 | << RHSType; | ||||||||
10287 | return QualType(); | ||||||||
10288 | } | ||||||||
10289 | |||||||||
10290 | |||||||||
10291 | // If there is a vector type that is not a ExtVector and a scalar, we reach | ||||||||
10292 | // this point if scalar could not be converted to the vector's element type | ||||||||
10293 | // without truncation. | ||||||||
10294 | if ((RHSVecType && !isa<ExtVectorType>(RHSVecType)) || | ||||||||
10295 | (LHSVecType && !isa<ExtVectorType>(LHSVecType))) { | ||||||||
10296 | QualType Scalar = LHSVecType ? RHSType : LHSType; | ||||||||
10297 | QualType Vector = LHSVecType ? LHSType : RHSType; | ||||||||
10298 | unsigned ScalarOrVector = LHSVecType && RHSVecType ? 1 : 0; | ||||||||
10299 | Diag(Loc, | ||||||||
10300 | diag::err_typecheck_vector_not_convertable_implict_truncation) | ||||||||
10301 | << ScalarOrVector << Scalar << Vector; | ||||||||
10302 | |||||||||
10303 | return QualType(); | ||||||||
10304 | } | ||||||||
10305 | |||||||||
10306 | // Otherwise, use the generic diagnostic. | ||||||||
10307 | Diag(Loc, DiagID) | ||||||||
10308 | << LHSType << RHSType | ||||||||
10309 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
10310 | return QualType(); | ||||||||
10311 | } | ||||||||
10312 | |||||||||
10313 | // checkArithmeticNull - Detect when a NULL constant is used improperly in an | ||||||||
10314 | // expression. These are mainly cases where the null pointer is used as an | ||||||||
10315 | // integer instead of a pointer. | ||||||||
10316 | static void checkArithmeticNull(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
10317 | SourceLocation Loc, bool IsCompare) { | ||||||||
10318 | // The canonical way to check for a GNU null is with isNullPointerConstant, | ||||||||
10319 | // but we use a bit of a hack here for speed; this is a relatively | ||||||||
10320 | // hot path, and isNullPointerConstant is slow. | ||||||||
10321 | bool LHSNull = isa<GNUNullExpr>(LHS.get()->IgnoreParenImpCasts()); | ||||||||
10322 | bool RHSNull = isa<GNUNullExpr>(RHS.get()->IgnoreParenImpCasts()); | ||||||||
10323 | |||||||||
10324 | QualType NonNullType = LHSNull ? RHS.get()->getType() : LHS.get()->getType(); | ||||||||
10325 | |||||||||
10326 | // Avoid analyzing cases where the result will either be invalid (and | ||||||||
10327 | // diagnosed as such) or entirely valid and not something to warn about. | ||||||||
10328 | if ((!LHSNull && !RHSNull) || NonNullType->isBlockPointerType() || | ||||||||
10329 | NonNullType->isMemberPointerType() || NonNullType->isFunctionType()) | ||||||||
10330 | return; | ||||||||
10331 | |||||||||
10332 | // Comparison operations would not make sense with a null pointer no matter | ||||||||
10333 | // what the other expression is. | ||||||||
10334 | if (!IsCompare) { | ||||||||
10335 | S.Diag(Loc, diag::warn_null_in_arithmetic_operation) | ||||||||
10336 | << (LHSNull ? LHS.get()->getSourceRange() : SourceRange()) | ||||||||
10337 | << (RHSNull ? RHS.get()->getSourceRange() : SourceRange()); | ||||||||
10338 | return; | ||||||||
10339 | } | ||||||||
10340 | |||||||||
10341 | // The rest of the operations only make sense with a null pointer | ||||||||
10342 | // if the other expression is a pointer. | ||||||||
10343 | if (LHSNull == RHSNull || NonNullType->isAnyPointerType() || | ||||||||
10344 | NonNullType->canDecayToPointerType()) | ||||||||
10345 | return; | ||||||||
10346 | |||||||||
10347 | S.Diag(Loc, diag::warn_null_in_comparison_operation) | ||||||||
10348 | << LHSNull /* LHS is NULL */ << NonNullType | ||||||||
10349 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
10350 | } | ||||||||
10351 | |||||||||
10352 | static void DiagnoseDivisionSizeofPointerOrArray(Sema &S, Expr *LHS, Expr *RHS, | ||||||||
10353 | SourceLocation Loc) { | ||||||||
10354 | const auto *LUE = dyn_cast<UnaryExprOrTypeTraitExpr>(LHS); | ||||||||
10355 | const auto *RUE = dyn_cast<UnaryExprOrTypeTraitExpr>(RHS); | ||||||||
10356 | if (!LUE || !RUE) | ||||||||
10357 | return; | ||||||||
10358 | if (LUE->getKind() != UETT_SizeOf || LUE->isArgumentType() || | ||||||||
10359 | RUE->getKind() != UETT_SizeOf) | ||||||||
10360 | return; | ||||||||
10361 | |||||||||
10362 | const Expr *LHSArg = LUE->getArgumentExpr()->IgnoreParens(); | ||||||||
10363 | QualType LHSTy = LHSArg->getType(); | ||||||||
10364 | QualType RHSTy; | ||||||||
10365 | |||||||||
10366 | if (RUE->isArgumentType()) | ||||||||
10367 | RHSTy = RUE->getArgumentType().getNonReferenceType(); | ||||||||
10368 | else | ||||||||
10369 | RHSTy = RUE->getArgumentExpr()->IgnoreParens()->getType(); | ||||||||
10370 | |||||||||
10371 | if (LHSTy->isPointerType() && !RHSTy->isPointerType()) { | ||||||||
10372 | if (!S.Context.hasSameUnqualifiedType(LHSTy->getPointeeType(), RHSTy)) | ||||||||
10373 | return; | ||||||||
10374 | |||||||||
10375 | S.Diag(Loc, diag::warn_division_sizeof_ptr) << LHS << LHS->getSourceRange(); | ||||||||
10376 | if (const auto *DRE = dyn_cast<DeclRefExpr>(LHSArg)) { | ||||||||
10377 | if (const ValueDecl *LHSArgDecl = DRE->getDecl()) | ||||||||
10378 | S.Diag(LHSArgDecl->getLocation(), diag::note_pointer_declared_here) | ||||||||
10379 | << LHSArgDecl; | ||||||||
10380 | } | ||||||||
10381 | } else if (const auto *ArrayTy = S.Context.getAsArrayType(LHSTy)) { | ||||||||
10382 | QualType ArrayElemTy = ArrayTy->getElementType(); | ||||||||
10383 | if (ArrayElemTy != S.Context.getBaseElementType(ArrayTy) || | ||||||||
10384 | ArrayElemTy->isDependentType() || RHSTy->isDependentType() || | ||||||||
10385 | RHSTy->isReferenceType() || ArrayElemTy->isCharType() || | ||||||||
10386 | S.Context.getTypeSize(ArrayElemTy) == S.Context.getTypeSize(RHSTy)) | ||||||||
10387 | return; | ||||||||
10388 | S.Diag(Loc, diag::warn_division_sizeof_array) | ||||||||
10389 | << LHSArg->getSourceRange() << ArrayElemTy << RHSTy; | ||||||||
10390 | if (const auto *DRE = dyn_cast<DeclRefExpr>(LHSArg)) { | ||||||||
10391 | if (const ValueDecl *LHSArgDecl = DRE->getDecl()) | ||||||||
10392 | S.Diag(LHSArgDecl->getLocation(), diag::note_array_declared_here) | ||||||||
10393 | << LHSArgDecl; | ||||||||
10394 | } | ||||||||
10395 | |||||||||
10396 | S.Diag(Loc, diag::note_precedence_silence) << RHS; | ||||||||
10397 | } | ||||||||
10398 | } | ||||||||
10399 | |||||||||
10400 | static void DiagnoseBadDivideOrRemainderValues(Sema& S, ExprResult &LHS, | ||||||||
10401 | ExprResult &RHS, | ||||||||
10402 | SourceLocation Loc, bool IsDiv) { | ||||||||
10403 | // Check for division/remainder by zero. | ||||||||
10404 | Expr::EvalResult RHSValue; | ||||||||
10405 | if (!RHS.get()->isValueDependent() && | ||||||||
10406 | RHS.get()->EvaluateAsInt(RHSValue, S.Context) && | ||||||||
10407 | RHSValue.Val.getInt() == 0) | ||||||||
10408 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||||||
10409 | S.PDiag(diag::warn_remainder_division_by_zero) | ||||||||
10410 | << IsDiv << RHS.get()->getSourceRange()); | ||||||||
10411 | } | ||||||||
10412 | |||||||||
10413 | QualType Sema::CheckMultiplyDivideOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
10414 | SourceLocation Loc, | ||||||||
10415 | bool IsCompAssign, bool IsDiv) { | ||||||||
10416 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
10417 | |||||||||
10418 | QualType LHSTy = LHS.get()->getType(); | ||||||||
10419 | QualType RHSTy = RHS.get()->getType(); | ||||||||
10420 | if (LHSTy->isVectorType() || RHSTy->isVectorType()) | ||||||||
10421 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||||||
10422 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
10423 | /*AllowBoolConversions*/false); | ||||||||
10424 | if (!IsDiv && | ||||||||
10425 | (LHSTy->isConstantMatrixType() || RHSTy->isConstantMatrixType())) | ||||||||
10426 | return CheckMatrixMultiplyOperands(LHS, RHS, Loc, IsCompAssign); | ||||||||
10427 | // For division, only matrix-by-scalar is supported. Other combinations with | ||||||||
10428 | // matrix types are invalid. | ||||||||
10429 | if (IsDiv && LHSTy->isConstantMatrixType() && RHSTy->isArithmeticType()) | ||||||||
10430 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, IsCompAssign); | ||||||||
10431 | |||||||||
10432 | QualType compType = UsualArithmeticConversions( | ||||||||
10433 | LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
10434 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
10435 | return QualType(); | ||||||||
10436 | |||||||||
10437 | |||||||||
10438 | if (compType.isNull() || !compType->isArithmeticType()) | ||||||||
10439 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10440 | if (IsDiv) { | ||||||||
10441 | DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, IsDiv); | ||||||||
10442 | DiagnoseDivisionSizeofPointerOrArray(*this, LHS.get(), RHS.get(), Loc); | ||||||||
10443 | } | ||||||||
10444 | return compType; | ||||||||
10445 | } | ||||||||
10446 | |||||||||
10447 | QualType Sema::CheckRemainderOperands( | ||||||||
10448 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign) { | ||||||||
10449 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
10450 | |||||||||
10451 | if (LHS.get()->getType()->isVectorType() || | ||||||||
10452 | RHS.get()->getType()->isVectorType()) { | ||||||||
10453 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||||||
10454 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||||||
10455 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||||||
10456 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
10457 | /*AllowBoolConversions*/false); | ||||||||
10458 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10459 | } | ||||||||
10460 | |||||||||
10461 | QualType compType = UsualArithmeticConversions( | ||||||||
10462 | LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
10463 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
10464 | return QualType(); | ||||||||
10465 | |||||||||
10466 | if (compType.isNull() || !compType->isIntegerType()) | ||||||||
10467 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10468 | DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, false /* IsDiv */); | ||||||||
10469 | return compType; | ||||||||
10470 | } | ||||||||
10471 | |||||||||
10472 | /// Diagnose invalid arithmetic on two void pointers. | ||||||||
10473 | static void diagnoseArithmeticOnTwoVoidPointers(Sema &S, SourceLocation Loc, | ||||||||
10474 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
10475 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
10476 | ? diag::err_typecheck_pointer_arith_void_type | ||||||||
10477 | : diag::ext_gnu_void_ptr) | ||||||||
10478 | << 1 /* two pointers */ << LHSExpr->getSourceRange() | ||||||||
10479 | << RHSExpr->getSourceRange(); | ||||||||
10480 | } | ||||||||
10481 | |||||||||
10482 | /// Diagnose invalid arithmetic on a void pointer. | ||||||||
10483 | static void diagnoseArithmeticOnVoidPointer(Sema &S, SourceLocation Loc, | ||||||||
10484 | Expr *Pointer) { | ||||||||
10485 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
10486 | ? diag::err_typecheck_pointer_arith_void_type | ||||||||
10487 | : diag::ext_gnu_void_ptr) | ||||||||
10488 | << 0 /* one pointer */ << Pointer->getSourceRange(); | ||||||||
10489 | } | ||||||||
10490 | |||||||||
10491 | /// Diagnose invalid arithmetic on a null pointer. | ||||||||
10492 | /// | ||||||||
10493 | /// If \p IsGNUIdiom is true, the operation is using the 'p = (i8*)nullptr + n' | ||||||||
10494 | /// idiom, which we recognize as a GNU extension. | ||||||||
10495 | /// | ||||||||
10496 | static void diagnoseArithmeticOnNullPointer(Sema &S, SourceLocation Loc, | ||||||||
10497 | Expr *Pointer, bool IsGNUIdiom) { | ||||||||
10498 | if (IsGNUIdiom) | ||||||||
10499 | S.Diag(Loc, diag::warn_gnu_null_ptr_arith) | ||||||||
10500 | << Pointer->getSourceRange(); | ||||||||
10501 | else | ||||||||
10502 | S.Diag(Loc, diag::warn_pointer_arith_null_ptr) | ||||||||
10503 | << S.getLangOpts().CPlusPlus << Pointer->getSourceRange(); | ||||||||
10504 | } | ||||||||
10505 | |||||||||
10506 | /// Diagnose invalid subraction on a null pointer. | ||||||||
10507 | /// | ||||||||
10508 | static void diagnoseSubtractionOnNullPointer(Sema &S, SourceLocation Loc, | ||||||||
10509 | Expr *Pointer, bool BothNull) { | ||||||||
10510 | // Null - null is valid in C++ [expr.add]p7 | ||||||||
10511 | if (BothNull && S.getLangOpts().CPlusPlus) | ||||||||
10512 | return; | ||||||||
10513 | |||||||||
10514 | // Is this s a macro from a system header? | ||||||||
10515 | if (S.Diags.getSuppressSystemWarnings() && S.SourceMgr.isInSystemMacro(Loc)) | ||||||||
10516 | return; | ||||||||
10517 | |||||||||
10518 | S.Diag(Loc, diag::warn_pointer_sub_null_ptr) | ||||||||
10519 | << S.getLangOpts().CPlusPlus << Pointer->getSourceRange(); | ||||||||
10520 | } | ||||||||
10521 | |||||||||
10522 | /// Diagnose invalid arithmetic on two function pointers. | ||||||||
10523 | static void diagnoseArithmeticOnTwoFunctionPointers(Sema &S, SourceLocation Loc, | ||||||||
10524 | Expr *LHS, Expr *RHS) { | ||||||||
10525 | assert(LHS->getType()->isAnyPointerType())(static_cast <bool> (LHS->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("LHS->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10525, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10526 | assert(RHS->getType()->isAnyPointerType())(static_cast <bool> (RHS->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("RHS->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10526, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10527 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
10528 | ? diag::err_typecheck_pointer_arith_function_type | ||||||||
10529 | : diag::ext_gnu_ptr_func_arith) | ||||||||
10530 | << 1 /* two pointers */ << LHS->getType()->getPointeeType() | ||||||||
10531 | // We only show the second type if it differs from the first. | ||||||||
10532 | << (unsigned)!S.Context.hasSameUnqualifiedType(LHS->getType(), | ||||||||
10533 | RHS->getType()) | ||||||||
10534 | << RHS->getType()->getPointeeType() | ||||||||
10535 | << LHS->getSourceRange() << RHS->getSourceRange(); | ||||||||
10536 | } | ||||||||
10537 | |||||||||
10538 | /// Diagnose invalid arithmetic on a function pointer. | ||||||||
10539 | static void diagnoseArithmeticOnFunctionPointer(Sema &S, SourceLocation Loc, | ||||||||
10540 | Expr *Pointer) { | ||||||||
10541 | assert(Pointer->getType()->isAnyPointerType())(static_cast <bool> (Pointer->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("Pointer->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10541, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10542 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
10543 | ? diag::err_typecheck_pointer_arith_function_type | ||||||||
10544 | : diag::ext_gnu_ptr_func_arith) | ||||||||
10545 | << 0 /* one pointer */ << Pointer->getType()->getPointeeType() | ||||||||
10546 | << 0 /* one pointer, so only one type */ | ||||||||
10547 | << Pointer->getSourceRange(); | ||||||||
10548 | } | ||||||||
10549 | |||||||||
10550 | /// Emit error if Operand is incomplete pointer type | ||||||||
10551 | /// | ||||||||
10552 | /// \returns True if pointer has incomplete type | ||||||||
10553 | static bool checkArithmeticIncompletePointerType(Sema &S, SourceLocation Loc, | ||||||||
10554 | Expr *Operand) { | ||||||||
10555 | QualType ResType = Operand->getType(); | ||||||||
10556 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||||||
10557 | ResType = ResAtomicType->getValueType(); | ||||||||
10558 | |||||||||
10559 | assert(ResType->isAnyPointerType() && !ResType->isDependentType())(static_cast <bool> (ResType->isAnyPointerType() && !ResType->isDependentType()) ? void (0) : __assert_fail ( "ResType->isAnyPointerType() && !ResType->isDependentType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10559, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10560 | QualType PointeeTy = ResType->getPointeeType(); | ||||||||
10561 | return S.RequireCompleteSizedType( | ||||||||
10562 | Loc, PointeeTy, | ||||||||
10563 | diag::err_typecheck_arithmetic_incomplete_or_sizeless_type, | ||||||||
10564 | Operand->getSourceRange()); | ||||||||
10565 | } | ||||||||
10566 | |||||||||
10567 | /// Check the validity of an arithmetic pointer operand. | ||||||||
10568 | /// | ||||||||
10569 | /// If the operand has pointer type, this code will check for pointer types | ||||||||
10570 | /// which are invalid in arithmetic operations. These will be diagnosed | ||||||||
10571 | /// appropriately, including whether or not the use is supported as an | ||||||||
10572 | /// extension. | ||||||||
10573 | /// | ||||||||
10574 | /// \returns True when the operand is valid to use (even if as an extension). | ||||||||
10575 | static bool checkArithmeticOpPointerOperand(Sema &S, SourceLocation Loc, | ||||||||
10576 | Expr *Operand) { | ||||||||
10577 | QualType ResType = Operand->getType(); | ||||||||
10578 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||||||
10579 | ResType = ResAtomicType->getValueType(); | ||||||||
10580 | |||||||||
10581 | if (!ResType->isAnyPointerType()) return true; | ||||||||
10582 | |||||||||
10583 | QualType PointeeTy = ResType->getPointeeType(); | ||||||||
10584 | if (PointeeTy->isVoidType()) { | ||||||||
10585 | diagnoseArithmeticOnVoidPointer(S, Loc, Operand); | ||||||||
10586 | return !S.getLangOpts().CPlusPlus; | ||||||||
10587 | } | ||||||||
10588 | if (PointeeTy->isFunctionType()) { | ||||||||
10589 | diagnoseArithmeticOnFunctionPointer(S, Loc, Operand); | ||||||||
10590 | return !S.getLangOpts().CPlusPlus; | ||||||||
10591 | } | ||||||||
10592 | |||||||||
10593 | if (checkArithmeticIncompletePointerType(S, Loc, Operand)) return false; | ||||||||
10594 | |||||||||
10595 | return true; | ||||||||
10596 | } | ||||||||
10597 | |||||||||
10598 | /// Check the validity of a binary arithmetic operation w.r.t. pointer | ||||||||
10599 | /// operands. | ||||||||
10600 | /// | ||||||||
10601 | /// This routine will diagnose any invalid arithmetic on pointer operands much | ||||||||
10602 | /// like \see checkArithmeticOpPointerOperand. However, it has special logic | ||||||||
10603 | /// for emitting a single diagnostic even for operations where both LHS and RHS | ||||||||
10604 | /// are (potentially problematic) pointers. | ||||||||
10605 | /// | ||||||||
10606 | /// \returns True when the operand is valid to use (even if as an extension). | ||||||||
10607 | static bool checkArithmeticBinOpPointerOperands(Sema &S, SourceLocation Loc, | ||||||||
10608 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
10609 | bool isLHSPointer = LHSExpr->getType()->isAnyPointerType(); | ||||||||
10610 | bool isRHSPointer = RHSExpr->getType()->isAnyPointerType(); | ||||||||
10611 | if (!isLHSPointer && !isRHSPointer) return true; | ||||||||
10612 | |||||||||
10613 | QualType LHSPointeeTy, RHSPointeeTy; | ||||||||
10614 | if (isLHSPointer) LHSPointeeTy = LHSExpr->getType()->getPointeeType(); | ||||||||
10615 | if (isRHSPointer) RHSPointeeTy = RHSExpr->getType()->getPointeeType(); | ||||||||
10616 | |||||||||
10617 | // if both are pointers check if operation is valid wrt address spaces | ||||||||
10618 | if (isLHSPointer && isRHSPointer) { | ||||||||
10619 | if (!LHSPointeeTy.isAddressSpaceOverlapping(RHSPointeeTy)) { | ||||||||
10620 | S.Diag(Loc, | ||||||||
10621 | diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||||||
10622 | << LHSExpr->getType() << RHSExpr->getType() << 1 /*arithmetic op*/ | ||||||||
10623 | << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); | ||||||||
10624 | return false; | ||||||||
10625 | } | ||||||||
10626 | } | ||||||||
10627 | |||||||||
10628 | // Check for arithmetic on pointers to incomplete types. | ||||||||
10629 | bool isLHSVoidPtr = isLHSPointer && LHSPointeeTy->isVoidType(); | ||||||||
10630 | bool isRHSVoidPtr = isRHSPointer && RHSPointeeTy->isVoidType(); | ||||||||
10631 | if (isLHSVoidPtr || isRHSVoidPtr) { | ||||||||
10632 | if (!isRHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, LHSExpr); | ||||||||
10633 | else if (!isLHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, RHSExpr); | ||||||||
10634 | else diagnoseArithmeticOnTwoVoidPointers(S, Loc, LHSExpr, RHSExpr); | ||||||||
10635 | |||||||||
10636 | return !S.getLangOpts().CPlusPlus; | ||||||||
10637 | } | ||||||||
10638 | |||||||||
10639 | bool isLHSFuncPtr = isLHSPointer && LHSPointeeTy->isFunctionType(); | ||||||||
10640 | bool isRHSFuncPtr = isRHSPointer && RHSPointeeTy->isFunctionType(); | ||||||||
10641 | if (isLHSFuncPtr || isRHSFuncPtr) { | ||||||||
10642 | if (!isRHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, LHSExpr); | ||||||||
10643 | else if (!isLHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, | ||||||||
10644 | RHSExpr); | ||||||||
10645 | else diagnoseArithmeticOnTwoFunctionPointers(S, Loc, LHSExpr, RHSExpr); | ||||||||
10646 | |||||||||
10647 | return !S.getLangOpts().CPlusPlus; | ||||||||
10648 | } | ||||||||
10649 | |||||||||
10650 | if (isLHSPointer && checkArithmeticIncompletePointerType(S, Loc, LHSExpr)) | ||||||||
10651 | return false; | ||||||||
10652 | if (isRHSPointer && checkArithmeticIncompletePointerType(S, Loc, RHSExpr)) | ||||||||
10653 | return false; | ||||||||
10654 | |||||||||
10655 | return true; | ||||||||
10656 | } | ||||||||
10657 | |||||||||
10658 | /// diagnoseStringPlusInt - Emit a warning when adding an integer to a string | ||||||||
10659 | /// literal. | ||||||||
10660 | static void diagnoseStringPlusInt(Sema &Self, SourceLocation OpLoc, | ||||||||
10661 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
10662 | StringLiteral* StrExpr = dyn_cast<StringLiteral>(LHSExpr->IgnoreImpCasts()); | ||||||||
10663 | Expr* IndexExpr = RHSExpr; | ||||||||
10664 | if (!StrExpr) { | ||||||||
10665 | StrExpr = dyn_cast<StringLiteral>(RHSExpr->IgnoreImpCasts()); | ||||||||
10666 | IndexExpr = LHSExpr; | ||||||||
10667 | } | ||||||||
10668 | |||||||||
10669 | bool IsStringPlusInt = StrExpr && | ||||||||
10670 | IndexExpr->getType()->isIntegralOrUnscopedEnumerationType(); | ||||||||
10671 | if (!IsStringPlusInt || IndexExpr->isValueDependent()) | ||||||||
10672 | return; | ||||||||
10673 | |||||||||
10674 | SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
10675 | Self.Diag(OpLoc, diag::warn_string_plus_int) | ||||||||
10676 | << DiagRange << IndexExpr->IgnoreImpCasts()->getType(); | ||||||||
10677 | |||||||||
10678 | // Only print a fixit for "str" + int, not for int + "str". | ||||||||
10679 | if (IndexExpr == RHSExpr) { | ||||||||
10680 | SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); | ||||||||
10681 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) | ||||||||
10682 | << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") | ||||||||
10683 | << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") | ||||||||
10684 | << FixItHint::CreateInsertion(EndLoc, "]"); | ||||||||
10685 | } else | ||||||||
10686 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); | ||||||||
10687 | } | ||||||||
10688 | |||||||||
10689 | /// Emit a warning when adding a char literal to a string. | ||||||||
10690 | static void diagnoseStringPlusChar(Sema &Self, SourceLocation OpLoc, | ||||||||
10691 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
10692 | const Expr *StringRefExpr = LHSExpr; | ||||||||
10693 | const CharacterLiteral *CharExpr = | ||||||||
10694 | dyn_cast<CharacterLiteral>(RHSExpr->IgnoreImpCasts()); | ||||||||
10695 | |||||||||
10696 | if (!CharExpr) { | ||||||||
10697 | CharExpr = dyn_cast<CharacterLiteral>(LHSExpr->IgnoreImpCasts()); | ||||||||
10698 | StringRefExpr = RHSExpr; | ||||||||
10699 | } | ||||||||
10700 | |||||||||
10701 | if (!CharExpr || !StringRefExpr) | ||||||||
10702 | return; | ||||||||
10703 | |||||||||
10704 | const QualType StringType = StringRefExpr->getType(); | ||||||||
10705 | |||||||||
10706 | // Return if not a PointerType. | ||||||||
10707 | if (!StringType->isAnyPointerType()) | ||||||||
10708 | return; | ||||||||
10709 | |||||||||
10710 | // Return if not a CharacterType. | ||||||||
10711 | if (!StringType->getPointeeType()->isAnyCharacterType()) | ||||||||
10712 | return; | ||||||||
10713 | |||||||||
10714 | ASTContext &Ctx = Self.getASTContext(); | ||||||||
10715 | SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
10716 | |||||||||
10717 | const QualType CharType = CharExpr->getType(); | ||||||||
10718 | if (!CharType->isAnyCharacterType() && | ||||||||
10719 | CharType->isIntegerType() && | ||||||||
10720 | llvm::isUIntN(Ctx.getCharWidth(), CharExpr->getValue())) { | ||||||||
10721 | Self.Diag(OpLoc, diag::warn_string_plus_char) | ||||||||
10722 | << DiagRange << Ctx.CharTy; | ||||||||
10723 | } else { | ||||||||
10724 | Self.Diag(OpLoc, diag::warn_string_plus_char) | ||||||||
10725 | << DiagRange << CharExpr->getType(); | ||||||||
10726 | } | ||||||||
10727 | |||||||||
10728 | // Only print a fixit for str + char, not for char + str. | ||||||||
10729 | if (isa<CharacterLiteral>(RHSExpr->IgnoreImpCasts())) { | ||||||||
10730 | SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); | ||||||||
10731 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) | ||||||||
10732 | << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") | ||||||||
10733 | << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") | ||||||||
10734 | << FixItHint::CreateInsertion(EndLoc, "]"); | ||||||||
10735 | } else { | ||||||||
10736 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); | ||||||||
10737 | } | ||||||||
10738 | } | ||||||||
10739 | |||||||||
10740 | /// Emit error when two pointers are incompatible. | ||||||||
10741 | static void diagnosePointerIncompatibility(Sema &S, SourceLocation Loc, | ||||||||
10742 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
10743 | assert(LHSExpr->getType()->isAnyPointerType())(static_cast <bool> (LHSExpr->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("LHSExpr->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10743, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10744 | assert(RHSExpr->getType()->isAnyPointerType())(static_cast <bool> (RHSExpr->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("RHSExpr->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10744, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10745 | S.Diag(Loc, diag::err_typecheck_sub_ptr_compatible) | ||||||||
10746 | << LHSExpr->getType() << RHSExpr->getType() << LHSExpr->getSourceRange() | ||||||||
10747 | << RHSExpr->getSourceRange(); | ||||||||
10748 | } | ||||||||
10749 | |||||||||
10750 | // C99 6.5.6 | ||||||||
10751 | QualType Sema::CheckAdditionOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
10752 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||||||
10753 | QualType* CompLHSTy) { | ||||||||
10754 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
10755 | |||||||||
10756 | if (LHS.get()->getType()->isVectorType() || | ||||||||
10757 | RHS.get()->getType()->isVectorType()) { | ||||||||
10758 | QualType compType = CheckVectorOperands( | ||||||||
10759 | LHS, RHS, Loc, CompLHSTy, | ||||||||
10760 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
10761 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
10762 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
10763 | return compType; | ||||||||
10764 | } | ||||||||
10765 | |||||||||
10766 | if (LHS.get()->getType()->isConstantMatrixType() || | ||||||||
10767 | RHS.get()->getType()->isConstantMatrixType()) { | ||||||||
10768 | QualType compType = | ||||||||
10769 | CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); | ||||||||
10770 | if (CompLHSTy) | ||||||||
10771 | *CompLHSTy = compType; | ||||||||
10772 | return compType; | ||||||||
10773 | } | ||||||||
10774 | |||||||||
10775 | QualType compType = UsualArithmeticConversions( | ||||||||
10776 | LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
10777 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
10778 | return QualType(); | ||||||||
10779 | |||||||||
10780 | // Diagnose "string literal" '+' int and string '+' "char literal". | ||||||||
10781 | if (Opc == BO_Add) { | ||||||||
10782 | diagnoseStringPlusInt(*this, Loc, LHS.get(), RHS.get()); | ||||||||
10783 | diagnoseStringPlusChar(*this, Loc, LHS.get(), RHS.get()); | ||||||||
10784 | } | ||||||||
10785 | |||||||||
10786 | // handle the common case first (both operands are arithmetic). | ||||||||
10787 | if (!compType.isNull() && compType->isArithmeticType()) { | ||||||||
10788 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
10789 | return compType; | ||||||||
10790 | } | ||||||||
10791 | |||||||||
10792 | // Type-checking. Ultimately the pointer's going to be in PExp; | ||||||||
10793 | // note that we bias towards the LHS being the pointer. | ||||||||
10794 | Expr *PExp = LHS.get(), *IExp = RHS.get(); | ||||||||
10795 | |||||||||
10796 | bool isObjCPointer; | ||||||||
10797 | if (PExp->getType()->isPointerType()) { | ||||||||
10798 | isObjCPointer = false; | ||||||||
10799 | } else if (PExp->getType()->isObjCObjectPointerType()) { | ||||||||
10800 | isObjCPointer = true; | ||||||||
10801 | } else { | ||||||||
10802 | std::swap(PExp, IExp); | ||||||||
10803 | if (PExp->getType()->isPointerType()) { | ||||||||
10804 | isObjCPointer = false; | ||||||||
10805 | } else if (PExp->getType()->isObjCObjectPointerType()) { | ||||||||
10806 | isObjCPointer = true; | ||||||||
10807 | } else { | ||||||||
10808 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10809 | } | ||||||||
10810 | } | ||||||||
10811 | assert(PExp->getType()->isAnyPointerType())(static_cast <bool> (PExp->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("PExp->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 10811, __extension__ __PRETTY_FUNCTION__)); | ||||||||
10812 | |||||||||
10813 | if (!IExp->getType()->isIntegerType()) | ||||||||
10814 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10815 | |||||||||
10816 | // Adding to a null pointer results in undefined behavior. | ||||||||
10817 | if (PExp->IgnoreParenCasts()->isNullPointerConstant( | ||||||||
10818 | Context, Expr::NPC_ValueDependentIsNotNull)) { | ||||||||
10819 | // In C++ adding zero to a null pointer is defined. | ||||||||
10820 | Expr::EvalResult KnownVal; | ||||||||
10821 | if (!getLangOpts().CPlusPlus || | ||||||||
10822 | (!IExp->isValueDependent() && | ||||||||
10823 | (!IExp->EvaluateAsInt(KnownVal, Context) || | ||||||||
10824 | KnownVal.Val.getInt() != 0))) { | ||||||||
10825 | // Check the conditions to see if this is the 'p = nullptr + n' idiom. | ||||||||
10826 | bool IsGNUIdiom = BinaryOperator::isNullPointerArithmeticExtension( | ||||||||
10827 | Context, BO_Add, PExp, IExp); | ||||||||
10828 | diagnoseArithmeticOnNullPointer(*this, Loc, PExp, IsGNUIdiom); | ||||||||
10829 | } | ||||||||
10830 | } | ||||||||
10831 | |||||||||
10832 | if (!checkArithmeticOpPointerOperand(*this, Loc, PExp)) | ||||||||
10833 | return QualType(); | ||||||||
10834 | |||||||||
10835 | if (isObjCPointer && checkArithmeticOnObjCPointer(*this, Loc, PExp)) | ||||||||
10836 | return QualType(); | ||||||||
10837 | |||||||||
10838 | // Check array bounds for pointer arithemtic | ||||||||
10839 | CheckArrayAccess(PExp, IExp); | ||||||||
10840 | |||||||||
10841 | if (CompLHSTy) { | ||||||||
10842 | QualType LHSTy = Context.isPromotableBitField(LHS.get()); | ||||||||
10843 | if (LHSTy.isNull()) { | ||||||||
10844 | LHSTy = LHS.get()->getType(); | ||||||||
10845 | if (LHSTy->isPromotableIntegerType()) | ||||||||
10846 | LHSTy = Context.getPromotedIntegerType(LHSTy); | ||||||||
10847 | } | ||||||||
10848 | *CompLHSTy = LHSTy; | ||||||||
10849 | } | ||||||||
10850 | |||||||||
10851 | return PExp->getType(); | ||||||||
10852 | } | ||||||||
10853 | |||||||||
10854 | // C99 6.5.6 | ||||||||
10855 | QualType Sema::CheckSubtractionOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
10856 | SourceLocation Loc, | ||||||||
10857 | QualType* CompLHSTy) { | ||||||||
10858 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
10859 | |||||||||
10860 | if (LHS.get()->getType()->isVectorType() || | ||||||||
10861 | RHS.get()->getType()->isVectorType()) { | ||||||||
10862 | QualType compType = CheckVectorOperands( | ||||||||
10863 | LHS, RHS, Loc, CompLHSTy, | ||||||||
10864 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
10865 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
10866 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
10867 | return compType; | ||||||||
10868 | } | ||||||||
10869 | |||||||||
10870 | if (LHS.get()->getType()->isConstantMatrixType() || | ||||||||
10871 | RHS.get()->getType()->isConstantMatrixType()) { | ||||||||
10872 | QualType compType = | ||||||||
10873 | CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); | ||||||||
10874 | if (CompLHSTy) | ||||||||
10875 | *CompLHSTy = compType; | ||||||||
10876 | return compType; | ||||||||
10877 | } | ||||||||
10878 | |||||||||
10879 | QualType compType = UsualArithmeticConversions( | ||||||||
10880 | LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
10881 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
10882 | return QualType(); | ||||||||
10883 | |||||||||
10884 | // Enforce type constraints: C99 6.5.6p3. | ||||||||
10885 | |||||||||
10886 | // Handle the common case first (both operands are arithmetic). | ||||||||
10887 | if (!compType.isNull() && compType->isArithmeticType()) { | ||||||||
10888 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
10889 | return compType; | ||||||||
10890 | } | ||||||||
10891 | |||||||||
10892 | // Either ptr - int or ptr - ptr. | ||||||||
10893 | if (LHS.get()->getType()->isAnyPointerType()) { | ||||||||
10894 | QualType lpointee = LHS.get()->getType()->getPointeeType(); | ||||||||
10895 | |||||||||
10896 | // Diagnose bad cases where we step over interface counts. | ||||||||
10897 | if (LHS.get()->getType()->isObjCObjectPointerType() && | ||||||||
10898 | checkArithmeticOnObjCPointer(*this, Loc, LHS.get())) | ||||||||
10899 | return QualType(); | ||||||||
10900 | |||||||||
10901 | // The result type of a pointer-int computation is the pointer type. | ||||||||
10902 | if (RHS.get()->getType()->isIntegerType()) { | ||||||||
10903 | // Subtracting from a null pointer should produce a warning. | ||||||||
10904 | // The last argument to the diagnose call says this doesn't match the | ||||||||
10905 | // GNU int-to-pointer idiom. | ||||||||
10906 | if (LHS.get()->IgnoreParenCasts()->isNullPointerConstant(Context, | ||||||||
10907 | Expr::NPC_ValueDependentIsNotNull)) { | ||||||||
10908 | // In C++ adding zero to a null pointer is defined. | ||||||||
10909 | Expr::EvalResult KnownVal; | ||||||||
10910 | if (!getLangOpts().CPlusPlus || | ||||||||
10911 | (!RHS.get()->isValueDependent() && | ||||||||
10912 | (!RHS.get()->EvaluateAsInt(KnownVal, Context) || | ||||||||
10913 | KnownVal.Val.getInt() != 0))) { | ||||||||
10914 | diagnoseArithmeticOnNullPointer(*this, Loc, LHS.get(), false); | ||||||||
10915 | } | ||||||||
10916 | } | ||||||||
10917 | |||||||||
10918 | if (!checkArithmeticOpPointerOperand(*this, Loc, LHS.get())) | ||||||||
10919 | return QualType(); | ||||||||
10920 | |||||||||
10921 | // Check array bounds for pointer arithemtic | ||||||||
10922 | CheckArrayAccess(LHS.get(), RHS.get(), /*ArraySubscriptExpr*/nullptr, | ||||||||
10923 | /*AllowOnePastEnd*/true, /*IndexNegated*/true); | ||||||||
10924 | |||||||||
10925 | if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); | ||||||||
10926 | return LHS.get()->getType(); | ||||||||
10927 | } | ||||||||
10928 | |||||||||
10929 | // Handle pointer-pointer subtractions. | ||||||||
10930 | if (const PointerType *RHSPTy | ||||||||
10931 | = RHS.get()->getType()->getAs<PointerType>()) { | ||||||||
10932 | QualType rpointee = RHSPTy->getPointeeType(); | ||||||||
10933 | |||||||||
10934 | if (getLangOpts().CPlusPlus) { | ||||||||
10935 | // Pointee types must be the same: C++ [expr.add] | ||||||||
10936 | if (!Context.hasSameUnqualifiedType(lpointee, rpointee)) { | ||||||||
10937 | diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); | ||||||||
10938 | } | ||||||||
10939 | } else { | ||||||||
10940 | // Pointee types must be compatible C99 6.5.6p3 | ||||||||
10941 | if (!Context.typesAreCompatible( | ||||||||
10942 | Context.getCanonicalType(lpointee).getUnqualifiedType(), | ||||||||
10943 | Context.getCanonicalType(rpointee).getUnqualifiedType())) { | ||||||||
10944 | diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); | ||||||||
10945 | return QualType(); | ||||||||
10946 | } | ||||||||
10947 | } | ||||||||
10948 | |||||||||
10949 | if (!checkArithmeticBinOpPointerOperands(*this, Loc, | ||||||||
10950 | LHS.get(), RHS.get())) | ||||||||
10951 | return QualType(); | ||||||||
10952 | |||||||||
10953 | bool LHSIsNullPtr = LHS.get()->IgnoreParenCasts()->isNullPointerConstant( | ||||||||
10954 | Context, Expr::NPC_ValueDependentIsNotNull); | ||||||||
10955 | bool RHSIsNullPtr = RHS.get()->IgnoreParenCasts()->isNullPointerConstant( | ||||||||
10956 | Context, Expr::NPC_ValueDependentIsNotNull); | ||||||||
10957 | |||||||||
10958 | // Subtracting nullptr or from nullptr is suspect | ||||||||
10959 | if (LHSIsNullPtr) | ||||||||
10960 | diagnoseSubtractionOnNullPointer(*this, Loc, LHS.get(), RHSIsNullPtr); | ||||||||
10961 | if (RHSIsNullPtr) | ||||||||
10962 | diagnoseSubtractionOnNullPointer(*this, Loc, RHS.get(), LHSIsNullPtr); | ||||||||
10963 | |||||||||
10964 | // The pointee type may have zero size. As an extension, a structure or | ||||||||
10965 | // union may have zero size or an array may have zero length. In this | ||||||||
10966 | // case subtraction does not make sense. | ||||||||
10967 | if (!rpointee->isVoidType() && !rpointee->isFunctionType()) { | ||||||||
10968 | CharUnits ElementSize = Context.getTypeSizeInChars(rpointee); | ||||||||
10969 | if (ElementSize.isZero()) { | ||||||||
10970 | Diag(Loc,diag::warn_sub_ptr_zero_size_types) | ||||||||
10971 | << rpointee.getUnqualifiedType() | ||||||||
10972 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
10973 | } | ||||||||
10974 | } | ||||||||
10975 | |||||||||
10976 | if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); | ||||||||
10977 | return Context.getPointerDiffType(); | ||||||||
10978 | } | ||||||||
10979 | } | ||||||||
10980 | |||||||||
10981 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
10982 | } | ||||||||
10983 | |||||||||
10984 | static bool isScopedEnumerationType(QualType T) { | ||||||||
10985 | if (const EnumType *ET = T->getAs<EnumType>()) | ||||||||
10986 | return ET->getDecl()->isScoped(); | ||||||||
10987 | return false; | ||||||||
10988 | } | ||||||||
10989 | |||||||||
10990 | static void DiagnoseBadShiftValues(Sema& S, ExprResult &LHS, ExprResult &RHS, | ||||||||
10991 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||||||
10992 | QualType LHSType) { | ||||||||
10993 | // OpenCL 6.3j: shift values are effectively % word size of LHS (more defined), | ||||||||
10994 | // so skip remaining warnings as we don't want to modify values within Sema. | ||||||||
10995 | if (S.getLangOpts().OpenCL) | ||||||||
10996 | return; | ||||||||
10997 | |||||||||
10998 | // Check right/shifter operand | ||||||||
10999 | Expr::EvalResult RHSResult; | ||||||||
11000 | if (RHS.get()->isValueDependent() || | ||||||||
11001 | !RHS.get()->EvaluateAsInt(RHSResult, S.Context)) | ||||||||
11002 | return; | ||||||||
11003 | llvm::APSInt Right = RHSResult.Val.getInt(); | ||||||||
11004 | |||||||||
11005 | if (Right.isNegative()) { | ||||||||
11006 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||||||
11007 | S.PDiag(diag::warn_shift_negative) | ||||||||
11008 | << RHS.get()->getSourceRange()); | ||||||||
11009 | return; | ||||||||
11010 | } | ||||||||
11011 | |||||||||
11012 | QualType LHSExprType = LHS.get()->getType(); | ||||||||
11013 | uint64_t LeftSize = S.Context.getTypeSize(LHSExprType); | ||||||||
11014 | if (LHSExprType->isExtIntType()) | ||||||||
11015 | LeftSize = S.Context.getIntWidth(LHSExprType); | ||||||||
11016 | else if (LHSExprType->isFixedPointType()) { | ||||||||
11017 | auto FXSema = S.Context.getFixedPointSemantics(LHSExprType); | ||||||||
11018 | LeftSize = FXSema.getWidth() - (unsigned)FXSema.hasUnsignedPadding(); | ||||||||
11019 | } | ||||||||
11020 | llvm::APInt LeftBits(Right.getBitWidth(), LeftSize); | ||||||||
11021 | if (Right.uge(LeftBits)) { | ||||||||
11022 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||||||
11023 | S.PDiag(diag::warn_shift_gt_typewidth) | ||||||||
11024 | << RHS.get()->getSourceRange()); | ||||||||
11025 | return; | ||||||||
11026 | } | ||||||||
11027 | |||||||||
11028 | // FIXME: We probably need to handle fixed point types specially here. | ||||||||
11029 | if (Opc != BO_Shl || LHSExprType->isFixedPointType()) | ||||||||
11030 | return; | ||||||||
11031 | |||||||||
11032 | // When left shifting an ICE which is signed, we can check for overflow which | ||||||||
11033 | // according to C++ standards prior to C++2a has undefined behavior | ||||||||
11034 | // ([expr.shift] 5.8/2). Unsigned integers have defined behavior modulo one | ||||||||
11035 | // more than the maximum value representable in the result type, so never | ||||||||
11036 | // warn for those. (FIXME: Unsigned left-shift overflow in a constant | ||||||||
11037 | // expression is still probably a bug.) | ||||||||
11038 | Expr::EvalResult LHSResult; | ||||||||
11039 | if (LHS.get()->isValueDependent() || | ||||||||
11040 | LHSType->hasUnsignedIntegerRepresentation() || | ||||||||
11041 | !LHS.get()->EvaluateAsInt(LHSResult, S.Context)) | ||||||||
11042 | return; | ||||||||
11043 | llvm::APSInt Left = LHSResult.Val.getInt(); | ||||||||
11044 | |||||||||
11045 | // If LHS does not have a signed type and non-negative value | ||||||||
11046 | // then, the behavior is undefined before C++2a. Warn about it. | ||||||||
11047 | if (Left.isNegative() && !S.getLangOpts().isSignedOverflowDefined() && | ||||||||
11048 | !S.getLangOpts().CPlusPlus20) { | ||||||||
11049 | S.DiagRuntimeBehavior(Loc, LHS.get(), | ||||||||
11050 | S.PDiag(diag::warn_shift_lhs_negative) | ||||||||
11051 | << LHS.get()->getSourceRange()); | ||||||||
11052 | return; | ||||||||
11053 | } | ||||||||
11054 | |||||||||
11055 | llvm::APInt ResultBits = | ||||||||
11056 | static_cast<llvm::APInt&>(Right) + Left.getMinSignedBits(); | ||||||||
11057 | if (LeftBits.uge(ResultBits)) | ||||||||
11058 | return; | ||||||||
11059 | llvm::APSInt Result = Left.extend(ResultBits.getLimitedValue()); | ||||||||
11060 | Result = Result.shl(Right); | ||||||||
11061 | |||||||||
11062 | // Print the bit representation of the signed integer as an unsigned | ||||||||
11063 | // hexadecimal number. | ||||||||
11064 | SmallString<40> HexResult; | ||||||||
11065 | Result.toString(HexResult, 16, /*Signed =*/false, /*Literal =*/true); | ||||||||
11066 | |||||||||
11067 | // If we are only missing a sign bit, this is less likely to result in actual | ||||||||
11068 | // bugs -- if the result is cast back to an unsigned type, it will have the | ||||||||
11069 | // expected value. Thus we place this behind a different warning that can be | ||||||||
11070 | // turned off separately if needed. | ||||||||
11071 | if (LeftBits == ResultBits - 1) { | ||||||||
11072 | S.Diag(Loc, diag::warn_shift_result_sets_sign_bit) | ||||||||
11073 | << HexResult << LHSType | ||||||||
11074 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
11075 | return; | ||||||||
11076 | } | ||||||||
11077 | |||||||||
11078 | S.Diag(Loc, diag::warn_shift_result_gt_typewidth) | ||||||||
11079 | << HexResult.str() << Result.getMinSignedBits() << LHSType | ||||||||
11080 | << Left.getBitWidth() << LHS.get()->getSourceRange() | ||||||||
11081 | << RHS.get()->getSourceRange(); | ||||||||
11082 | } | ||||||||
11083 | |||||||||
11084 | /// Return the resulting type when a vector is shifted | ||||||||
11085 | /// by a scalar or vector shift amount. | ||||||||
11086 | static QualType checkVectorShift(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
11087 | SourceLocation Loc, bool IsCompAssign) { | ||||||||
11088 | // OpenCL v1.1 s6.3.j says RHS can be a vector only if LHS is a vector. | ||||||||
11089 | if ((S.LangOpts.OpenCL || S.LangOpts.ZVector) && | ||||||||
11090 | !LHS.get()->getType()->isVectorType()) { | ||||||||
11091 | S.Diag(Loc, diag::err_shift_rhs_only_vector) | ||||||||
11092 | << RHS.get()->getType() << LHS.get()->getType() | ||||||||
11093 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
11094 | return QualType(); | ||||||||
11095 | } | ||||||||
11096 | |||||||||
11097 | if (!IsCompAssign) { | ||||||||
11098 | LHS = S.UsualUnaryConversions(LHS.get()); | ||||||||
11099 | if (LHS.isInvalid()) return QualType(); | ||||||||
11100 | } | ||||||||
11101 | |||||||||
11102 | RHS = S.UsualUnaryConversions(RHS.get()); | ||||||||
11103 | if (RHS.isInvalid()) return QualType(); | ||||||||
11104 | |||||||||
11105 | QualType LHSType = LHS.get()->getType(); | ||||||||
11106 | // Note that LHS might be a scalar because the routine calls not only in | ||||||||
11107 | // OpenCL case. | ||||||||
11108 | const VectorType *LHSVecTy = LHSType->getAs<VectorType>(); | ||||||||
11109 | QualType LHSEleType = LHSVecTy ? LHSVecTy->getElementType() : LHSType; | ||||||||
11110 | |||||||||
11111 | // Note that RHS might not be a vector. | ||||||||
11112 | QualType RHSType = RHS.get()->getType(); | ||||||||
11113 | const VectorType *RHSVecTy = RHSType->getAs<VectorType>(); | ||||||||
11114 | QualType RHSEleType = RHSVecTy ? RHSVecTy->getElementType() : RHSType; | ||||||||
11115 | |||||||||
11116 | // The operands need to be integers. | ||||||||
11117 | if (!LHSEleType->isIntegerType()) { | ||||||||
11118 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||||||
11119 | << LHS.get()->getType() << LHS.get()->getSourceRange(); | ||||||||
11120 | return QualType(); | ||||||||
11121 | } | ||||||||
11122 | |||||||||
11123 | if (!RHSEleType->isIntegerType()) { | ||||||||
11124 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||||||
11125 | << RHS.get()->getType() << RHS.get()->getSourceRange(); | ||||||||
11126 | return QualType(); | ||||||||
11127 | } | ||||||||
11128 | |||||||||
11129 | if (!LHSVecTy) { | ||||||||
11130 | assert(RHSVecTy)(static_cast <bool> (RHSVecTy) ? void (0) : __assert_fail ("RHSVecTy", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11130, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11131 | if (IsCompAssign) | ||||||||
11132 | return RHSType; | ||||||||
11133 | if (LHSEleType != RHSEleType) { | ||||||||
11134 | LHS = S.ImpCastExprToType(LHS.get(),RHSEleType, CK_IntegralCast); | ||||||||
11135 | LHSEleType = RHSEleType; | ||||||||
11136 | } | ||||||||
11137 | QualType VecTy = | ||||||||
11138 | S.Context.getExtVectorType(LHSEleType, RHSVecTy->getNumElements()); | ||||||||
11139 | LHS = S.ImpCastExprToType(LHS.get(), VecTy, CK_VectorSplat); | ||||||||
11140 | LHSType = VecTy; | ||||||||
11141 | } else if (RHSVecTy) { | ||||||||
11142 | // OpenCL v1.1 s6.3.j says that for vector types, the operators | ||||||||
11143 | // are applied component-wise. So if RHS is a vector, then ensure | ||||||||
11144 | // that the number of elements is the same as LHS... | ||||||||
11145 | if (RHSVecTy->getNumElements() != LHSVecTy->getNumElements()) { | ||||||||
11146 | S.Diag(Loc, diag::err_typecheck_vector_lengths_not_equal) | ||||||||
11147 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
11148 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
11149 | return QualType(); | ||||||||
11150 | } | ||||||||
11151 | if (!S.LangOpts.OpenCL && !S.LangOpts.ZVector) { | ||||||||
11152 | const BuiltinType *LHSBT = LHSEleType->getAs<clang::BuiltinType>(); | ||||||||
11153 | const BuiltinType *RHSBT = RHSEleType->getAs<clang::BuiltinType>(); | ||||||||
11154 | if (LHSBT != RHSBT && | ||||||||
11155 | S.Context.getTypeSize(LHSBT) != S.Context.getTypeSize(RHSBT)) { | ||||||||
11156 | S.Diag(Loc, diag::warn_typecheck_vector_element_sizes_not_equal) | ||||||||
11157 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
11158 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
11159 | } | ||||||||
11160 | } | ||||||||
11161 | } else { | ||||||||
11162 | // ...else expand RHS to match the number of elements in LHS. | ||||||||
11163 | QualType VecTy = | ||||||||
11164 | S.Context.getExtVectorType(RHSEleType, LHSVecTy->getNumElements()); | ||||||||
11165 | RHS = S.ImpCastExprToType(RHS.get(), VecTy, CK_VectorSplat); | ||||||||
11166 | } | ||||||||
11167 | |||||||||
11168 | return LHSType; | ||||||||
11169 | } | ||||||||
11170 | |||||||||
11171 | // C99 6.5.7 | ||||||||
11172 | QualType Sema::CheckShiftOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
11173 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||||||
11174 | bool IsCompAssign) { | ||||||||
11175 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
11176 | |||||||||
11177 | // Vector shifts promote their scalar inputs to vector type. | ||||||||
11178 | if (LHS.get()->getType()->isVectorType() || | ||||||||
11179 | RHS.get()->getType()->isVectorType()) { | ||||||||
11180 | if (LangOpts.ZVector) { | ||||||||
11181 | // The shift operators for the z vector extensions work basically | ||||||||
11182 | // like general shifts, except that neither the LHS nor the RHS is | ||||||||
11183 | // allowed to be a "vector bool". | ||||||||
11184 | if (auto LHSVecType = LHS.get()->getType()->getAs<VectorType>()) | ||||||||
11185 | if (LHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||||||
11186 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
11187 | if (auto RHSVecType = RHS.get()->getType()->getAs<VectorType>()) | ||||||||
11188 | if (RHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||||||
11189 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
11190 | } | ||||||||
11191 | return checkVectorShift(*this, LHS, RHS, Loc, IsCompAssign); | ||||||||
11192 | } | ||||||||
11193 | |||||||||
11194 | // Shifts don't perform usual arithmetic conversions, they just do integer | ||||||||
11195 | // promotions on each operand. C99 6.5.7p3 | ||||||||
11196 | |||||||||
11197 | // For the LHS, do usual unary conversions, but then reset them away | ||||||||
11198 | // if this is a compound assignment. | ||||||||
11199 | ExprResult OldLHS = LHS; | ||||||||
11200 | LHS = UsualUnaryConversions(LHS.get()); | ||||||||
11201 | if (LHS.isInvalid()) | ||||||||
11202 | return QualType(); | ||||||||
11203 | QualType LHSType = LHS.get()->getType(); | ||||||||
11204 | if (IsCompAssign) LHS = OldLHS; | ||||||||
11205 | |||||||||
11206 | // The RHS is simpler. | ||||||||
11207 | RHS = UsualUnaryConversions(RHS.get()); | ||||||||
11208 | if (RHS.isInvalid()) | ||||||||
11209 | return QualType(); | ||||||||
11210 | QualType RHSType = RHS.get()->getType(); | ||||||||
11211 | |||||||||
11212 | // C99 6.5.7p2: Each of the operands shall have integer type. | ||||||||
11213 | // Embedded-C 4.1.6.2.2: The LHS may also be fixed-point. | ||||||||
11214 | if ((!LHSType->isFixedPointOrIntegerType() && | ||||||||
11215 | !LHSType->hasIntegerRepresentation()) || | ||||||||
11216 | !RHSType->hasIntegerRepresentation()) | ||||||||
11217 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
11218 | |||||||||
11219 | // C++0x: Don't allow scoped enums. FIXME: Use something better than | ||||||||
11220 | // hasIntegerRepresentation() above instead of this. | ||||||||
11221 | if (isScopedEnumerationType(LHSType) || | ||||||||
11222 | isScopedEnumerationType(RHSType)) { | ||||||||
11223 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
11224 | } | ||||||||
11225 | // Sanity-check shift operands | ||||||||
11226 | DiagnoseBadShiftValues(*this, LHS, RHS, Loc, Opc, LHSType); | ||||||||
11227 | |||||||||
11228 | // "The type of the result is that of the promoted left operand." | ||||||||
11229 | return LHSType; | ||||||||
11230 | } | ||||||||
11231 | |||||||||
11232 | /// Diagnose bad pointer comparisons. | ||||||||
11233 | static void diagnoseDistinctPointerComparison(Sema &S, SourceLocation Loc, | ||||||||
11234 | ExprResult &LHS, ExprResult &RHS, | ||||||||
11235 | bool IsError) { | ||||||||
11236 | S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_distinct_pointers | ||||||||
11237 | : diag::ext_typecheck_comparison_of_distinct_pointers) | ||||||||
11238 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
11239 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
11240 | } | ||||||||
11241 | |||||||||
11242 | /// Returns false if the pointers are converted to a composite type, | ||||||||
11243 | /// true otherwise. | ||||||||
11244 | static bool convertPointersToCompositeType(Sema &S, SourceLocation Loc, | ||||||||
11245 | ExprResult &LHS, ExprResult &RHS) { | ||||||||
11246 | // C++ [expr.rel]p2: | ||||||||
11247 | // [...] Pointer conversions (4.10) and qualification | ||||||||
11248 | // conversions (4.4) are performed on pointer operands (or on | ||||||||
11249 | // a pointer operand and a null pointer constant) to bring | ||||||||
11250 | // them to their composite pointer type. [...] | ||||||||
11251 | // | ||||||||
11252 | // C++ [expr.eq]p1 uses the same notion for (in)equality | ||||||||
11253 | // comparisons of pointers. | ||||||||
11254 | |||||||||
11255 | QualType LHSType = LHS.get()->getType(); | ||||||||
11256 | QualType RHSType = RHS.get()->getType(); | ||||||||
11257 | assert(LHSType->isPointerType() || RHSType->isPointerType() ||(static_cast <bool> (LHSType->isPointerType() || RHSType ->isPointerType() || LHSType->isMemberPointerType() || RHSType ->isMemberPointerType()) ? void (0) : __assert_fail ("LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11258, __extension__ __PRETTY_FUNCTION__)) | ||||||||
11258 | LHSType->isMemberPointerType() || RHSType->isMemberPointerType())(static_cast <bool> (LHSType->isPointerType() || RHSType ->isPointerType() || LHSType->isMemberPointerType() || RHSType ->isMemberPointerType()) ? void (0) : __assert_fail ("LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11258, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11259 | |||||||||
11260 | QualType T = S.FindCompositePointerType(Loc, LHS, RHS); | ||||||||
11261 | if (T.isNull()) { | ||||||||
11262 | if ((LHSType->isAnyPointerType() || LHSType->isMemberPointerType()) && | ||||||||
11263 | (RHSType->isAnyPointerType() || RHSType->isMemberPointerType())) | ||||||||
11264 | diagnoseDistinctPointerComparison(S, Loc, LHS, RHS, /*isError*/true); | ||||||||
11265 | else | ||||||||
11266 | S.InvalidOperands(Loc, LHS, RHS); | ||||||||
11267 | return true; | ||||||||
11268 | } | ||||||||
11269 | |||||||||
11270 | return false; | ||||||||
11271 | } | ||||||||
11272 | |||||||||
11273 | static void diagnoseFunctionPointerToVoidComparison(Sema &S, SourceLocation Loc, | ||||||||
11274 | ExprResult &LHS, | ||||||||
11275 | ExprResult &RHS, | ||||||||
11276 | bool IsError) { | ||||||||
11277 | S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_fptr_to_void | ||||||||
11278 | : diag::ext_typecheck_comparison_of_fptr_to_void) | ||||||||
11279 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
11280 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
11281 | } | ||||||||
11282 | |||||||||
11283 | static bool isObjCObjectLiteral(ExprResult &E) { | ||||||||
11284 | switch (E.get()->IgnoreParenImpCasts()->getStmtClass()) { | ||||||||
11285 | case Stmt::ObjCArrayLiteralClass: | ||||||||
11286 | case Stmt::ObjCDictionaryLiteralClass: | ||||||||
11287 | case Stmt::ObjCStringLiteralClass: | ||||||||
11288 | case Stmt::ObjCBoxedExprClass: | ||||||||
11289 | return true; | ||||||||
11290 | default: | ||||||||
11291 | // Note that ObjCBoolLiteral is NOT an object literal! | ||||||||
11292 | return false; | ||||||||
11293 | } | ||||||||
11294 | } | ||||||||
11295 | |||||||||
11296 | static bool hasIsEqualMethod(Sema &S, const Expr *LHS, const Expr *RHS) { | ||||||||
11297 | const ObjCObjectPointerType *Type = | ||||||||
11298 | LHS->getType()->getAs<ObjCObjectPointerType>(); | ||||||||
11299 | |||||||||
11300 | // If this is not actually an Objective-C object, bail out. | ||||||||
11301 | if (!Type) | ||||||||
11302 | return false; | ||||||||
11303 | |||||||||
11304 | // Get the LHS object's interface type. | ||||||||
11305 | QualType InterfaceType = Type->getPointeeType(); | ||||||||
11306 | |||||||||
11307 | // If the RHS isn't an Objective-C object, bail out. | ||||||||
11308 | if (!RHS->getType()->isObjCObjectPointerType()) | ||||||||
11309 | return false; | ||||||||
11310 | |||||||||
11311 | // Try to find the -isEqual: method. | ||||||||
11312 | Selector IsEqualSel = S.NSAPIObj->getIsEqualSelector(); | ||||||||
11313 | ObjCMethodDecl *Method = S.LookupMethodInObjectType(IsEqualSel, | ||||||||
11314 | InterfaceType, | ||||||||
11315 | /*IsInstance=*/true); | ||||||||
11316 | if (!Method) { | ||||||||
11317 | if (Type->isObjCIdType()) { | ||||||||
11318 | // For 'id', just check the global pool. | ||||||||
11319 | Method = S.LookupInstanceMethodInGlobalPool(IsEqualSel, SourceRange(), | ||||||||
11320 | /*receiverId=*/true); | ||||||||
11321 | } else { | ||||||||
11322 | // Check protocols. | ||||||||
11323 | Method = S.LookupMethodInQualifiedType(IsEqualSel, Type, | ||||||||
11324 | /*IsInstance=*/true); | ||||||||
11325 | } | ||||||||
11326 | } | ||||||||
11327 | |||||||||
11328 | if (!Method) | ||||||||
11329 | return false; | ||||||||
11330 | |||||||||
11331 | QualType T = Method->parameters()[0]->getType(); | ||||||||
11332 | if (!T->isObjCObjectPointerType()) | ||||||||
11333 | return false; | ||||||||
11334 | |||||||||
11335 | QualType R = Method->getReturnType(); | ||||||||
11336 | if (!R->isScalarType()) | ||||||||
11337 | return false; | ||||||||
11338 | |||||||||
11339 | return true; | ||||||||
11340 | } | ||||||||
11341 | |||||||||
11342 | Sema::ObjCLiteralKind Sema::CheckLiteralKind(Expr *FromE) { | ||||||||
11343 | FromE = FromE->IgnoreParenImpCasts(); | ||||||||
11344 | switch (FromE->getStmtClass()) { | ||||||||
11345 | default: | ||||||||
11346 | break; | ||||||||
11347 | case Stmt::ObjCStringLiteralClass: | ||||||||
11348 | // "string literal" | ||||||||
11349 | return LK_String; | ||||||||
11350 | case Stmt::ObjCArrayLiteralClass: | ||||||||
11351 | // "array literal" | ||||||||
11352 | return LK_Array; | ||||||||
11353 | case Stmt::ObjCDictionaryLiteralClass: | ||||||||
11354 | // "dictionary literal" | ||||||||
11355 | return LK_Dictionary; | ||||||||
11356 | case Stmt::BlockExprClass: | ||||||||
11357 | return LK_Block; | ||||||||
11358 | case Stmt::ObjCBoxedExprClass: { | ||||||||
11359 | Expr *Inner = cast<ObjCBoxedExpr>(FromE)->getSubExpr()->IgnoreParens(); | ||||||||
11360 | switch (Inner->getStmtClass()) { | ||||||||
11361 | case Stmt::IntegerLiteralClass: | ||||||||
11362 | case Stmt::FloatingLiteralClass: | ||||||||
11363 | case Stmt::CharacterLiteralClass: | ||||||||
11364 | case Stmt::ObjCBoolLiteralExprClass: | ||||||||
11365 | case Stmt::CXXBoolLiteralExprClass: | ||||||||
11366 | // "numeric literal" | ||||||||
11367 | return LK_Numeric; | ||||||||
11368 | case Stmt::ImplicitCastExprClass: { | ||||||||
11369 | CastKind CK = cast<CastExpr>(Inner)->getCastKind(); | ||||||||
11370 | // Boolean literals can be represented by implicit casts. | ||||||||
11371 | if (CK == CK_IntegralToBoolean || CK == CK_IntegralCast) | ||||||||
11372 | return LK_Numeric; | ||||||||
11373 | break; | ||||||||
11374 | } | ||||||||
11375 | default: | ||||||||
11376 | break; | ||||||||
11377 | } | ||||||||
11378 | return LK_Boxed; | ||||||||
11379 | } | ||||||||
11380 | } | ||||||||
11381 | return LK_None; | ||||||||
11382 | } | ||||||||
11383 | |||||||||
11384 | static void diagnoseObjCLiteralComparison(Sema &S, SourceLocation Loc, | ||||||||
11385 | ExprResult &LHS, ExprResult &RHS, | ||||||||
11386 | BinaryOperator::Opcode Opc){ | ||||||||
11387 | Expr *Literal; | ||||||||
11388 | Expr *Other; | ||||||||
11389 | if (isObjCObjectLiteral(LHS)) { | ||||||||
11390 | Literal = LHS.get(); | ||||||||
11391 | Other = RHS.get(); | ||||||||
11392 | } else { | ||||||||
11393 | Literal = RHS.get(); | ||||||||
11394 | Other = LHS.get(); | ||||||||
11395 | } | ||||||||
11396 | |||||||||
11397 | // Don't warn on comparisons against nil. | ||||||||
11398 | Other = Other->IgnoreParenCasts(); | ||||||||
11399 | if (Other->isNullPointerConstant(S.getASTContext(), | ||||||||
11400 | Expr::NPC_ValueDependentIsNotNull)) | ||||||||
11401 | return; | ||||||||
11402 | |||||||||
11403 | // This should be kept in sync with warn_objc_literal_comparison. | ||||||||
11404 | // LK_String should always be after the other literals, since it has its own | ||||||||
11405 | // warning flag. | ||||||||
11406 | Sema::ObjCLiteralKind LiteralKind = S.CheckLiteralKind(Literal); | ||||||||
11407 | assert(LiteralKind != Sema::LK_Block)(static_cast <bool> (LiteralKind != Sema::LK_Block) ? void (0) : __assert_fail ("LiteralKind != Sema::LK_Block", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11407, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11408 | if (LiteralKind == Sema::LK_None) { | ||||||||
11409 | llvm_unreachable("Unknown Objective-C object literal kind")::llvm::llvm_unreachable_internal("Unknown Objective-C object literal kind" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11409); | ||||||||
11410 | } | ||||||||
11411 | |||||||||
11412 | if (LiteralKind == Sema::LK_String) | ||||||||
11413 | S.Diag(Loc, diag::warn_objc_string_literal_comparison) | ||||||||
11414 | << Literal->getSourceRange(); | ||||||||
11415 | else | ||||||||
11416 | S.Diag(Loc, diag::warn_objc_literal_comparison) | ||||||||
11417 | << LiteralKind << Literal->getSourceRange(); | ||||||||
11418 | |||||||||
11419 | if (BinaryOperator::isEqualityOp(Opc) && | ||||||||
11420 | hasIsEqualMethod(S, LHS.get(), RHS.get())) { | ||||||||
11421 | SourceLocation Start = LHS.get()->getBeginLoc(); | ||||||||
11422 | SourceLocation End = S.getLocForEndOfToken(RHS.get()->getEndLoc()); | ||||||||
11423 | CharSourceRange OpRange = | ||||||||
11424 | CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); | ||||||||
11425 | |||||||||
11426 | S.Diag(Loc, diag::note_objc_literal_comparison_isequal) | ||||||||
11427 | << FixItHint::CreateInsertion(Start, Opc == BO_EQ ? "[" : "![") | ||||||||
11428 | << FixItHint::CreateReplacement(OpRange, " isEqual:") | ||||||||
11429 | << FixItHint::CreateInsertion(End, "]"); | ||||||||
11430 | } | ||||||||
11431 | } | ||||||||
11432 | |||||||||
11433 | /// Warns on !x < y, !x & y where !(x < y), !(x & y) was probably intended. | ||||||||
11434 | static void diagnoseLogicalNotOnLHSofCheck(Sema &S, ExprResult &LHS, | ||||||||
11435 | ExprResult &RHS, SourceLocation Loc, | ||||||||
11436 | BinaryOperatorKind Opc) { | ||||||||
11437 | // Check that left hand side is !something. | ||||||||
11438 | UnaryOperator *UO = dyn_cast<UnaryOperator>(LHS.get()->IgnoreImpCasts()); | ||||||||
11439 | if (!UO || UO->getOpcode() != UO_LNot) return; | ||||||||
11440 | |||||||||
11441 | // Only check if the right hand side is non-bool arithmetic type. | ||||||||
11442 | if (RHS.get()->isKnownToHaveBooleanValue()) return; | ||||||||
11443 | |||||||||
11444 | // Make sure that the something in !something is not bool. | ||||||||
11445 | Expr *SubExpr = UO->getSubExpr()->IgnoreImpCasts(); | ||||||||
11446 | if (SubExpr->isKnownToHaveBooleanValue()) return; | ||||||||
11447 | |||||||||
11448 | // Emit warning. | ||||||||
11449 | bool IsBitwiseOp = Opc == BO_And || Opc == BO_Or || Opc == BO_Xor; | ||||||||
11450 | S.Diag(UO->getOperatorLoc(), diag::warn_logical_not_on_lhs_of_check) | ||||||||
11451 | << Loc << IsBitwiseOp; | ||||||||
11452 | |||||||||
11453 | // First note suggest !(x < y) | ||||||||
11454 | SourceLocation FirstOpen = SubExpr->getBeginLoc(); | ||||||||
11455 | SourceLocation FirstClose = RHS.get()->getEndLoc(); | ||||||||
11456 | FirstClose = S.getLocForEndOfToken(FirstClose); | ||||||||
11457 | if (FirstClose.isInvalid()) | ||||||||
11458 | FirstOpen = SourceLocation(); | ||||||||
11459 | S.Diag(UO->getOperatorLoc(), diag::note_logical_not_fix) | ||||||||
11460 | << IsBitwiseOp | ||||||||
11461 | << FixItHint::CreateInsertion(FirstOpen, "(") | ||||||||
11462 | << FixItHint::CreateInsertion(FirstClose, ")"); | ||||||||
11463 | |||||||||
11464 | // Second note suggests (!x) < y | ||||||||
11465 | SourceLocation SecondOpen = LHS.get()->getBeginLoc(); | ||||||||
11466 | SourceLocation SecondClose = LHS.get()->getEndLoc(); | ||||||||
11467 | SecondClose = S.getLocForEndOfToken(SecondClose); | ||||||||
11468 | if (SecondClose.isInvalid()) | ||||||||
11469 | SecondOpen = SourceLocation(); | ||||||||
11470 | S.Diag(UO->getOperatorLoc(), diag::note_logical_not_silence_with_parens) | ||||||||
11471 | << FixItHint::CreateInsertion(SecondOpen, "(") | ||||||||
11472 | << FixItHint::CreateInsertion(SecondClose, ")"); | ||||||||
11473 | } | ||||||||
11474 | |||||||||
11475 | // Returns true if E refers to a non-weak array. | ||||||||
11476 | static bool checkForArray(const Expr *E) { | ||||||||
11477 | const ValueDecl *D = nullptr; | ||||||||
11478 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(E)) { | ||||||||
11479 | D = DR->getDecl(); | ||||||||
11480 | } else if (const MemberExpr *Mem = dyn_cast<MemberExpr>(E)) { | ||||||||
11481 | if (Mem->isImplicitAccess()) | ||||||||
11482 | D = Mem->getMemberDecl(); | ||||||||
11483 | } | ||||||||
11484 | if (!D) | ||||||||
11485 | return false; | ||||||||
11486 | return D->getType()->isArrayType() && !D->isWeak(); | ||||||||
11487 | } | ||||||||
11488 | |||||||||
11489 | /// Diagnose some forms of syntactically-obvious tautological comparison. | ||||||||
11490 | static void diagnoseTautologicalComparison(Sema &S, SourceLocation Loc, | ||||||||
11491 | Expr *LHS, Expr *RHS, | ||||||||
11492 | BinaryOperatorKind Opc) { | ||||||||
11493 | Expr *LHSStripped = LHS->IgnoreParenImpCasts(); | ||||||||
11494 | Expr *RHSStripped = RHS->IgnoreParenImpCasts(); | ||||||||
11495 | |||||||||
11496 | QualType LHSType = LHS->getType(); | ||||||||
11497 | QualType RHSType = RHS->getType(); | ||||||||
11498 | if (LHSType->hasFloatingRepresentation() || | ||||||||
11499 | (LHSType->isBlockPointerType() && !BinaryOperator::isEqualityOp(Opc)) || | ||||||||
11500 | S.inTemplateInstantiation()) | ||||||||
11501 | return; | ||||||||
11502 | |||||||||
11503 | // Comparisons between two array types are ill-formed for operator<=>, so | ||||||||
11504 | // we shouldn't emit any additional warnings about it. | ||||||||
11505 | if (Opc == BO_Cmp && LHSType->isArrayType() && RHSType->isArrayType()) | ||||||||
11506 | return; | ||||||||
11507 | |||||||||
11508 | // For non-floating point types, check for self-comparisons of the form | ||||||||
11509 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||||||
11510 | // often indicate logic errors in the program. | ||||||||
11511 | // | ||||||||
11512 | // NOTE: Don't warn about comparison expressions resulting from macro | ||||||||
11513 | // expansion. Also don't warn about comparisons which are only self | ||||||||
11514 | // comparisons within a template instantiation. The warnings should catch | ||||||||
11515 | // obvious cases in the definition of the template anyways. The idea is to | ||||||||
11516 | // warn when the typed comparison operator will always evaluate to the same | ||||||||
11517 | // result. | ||||||||
11518 | |||||||||
11519 | // Used for indexing into %select in warn_comparison_always | ||||||||
11520 | enum { | ||||||||
11521 | AlwaysConstant, | ||||||||
11522 | AlwaysTrue, | ||||||||
11523 | AlwaysFalse, | ||||||||
11524 | AlwaysEqual, // std::strong_ordering::equal from operator<=> | ||||||||
11525 | }; | ||||||||
11526 | |||||||||
11527 | // C++2a [depr.array.comp]: | ||||||||
11528 | // Equality and relational comparisons ([expr.eq], [expr.rel]) between two | ||||||||
11529 | // operands of array type are deprecated. | ||||||||
11530 | if (S.getLangOpts().CPlusPlus20 && LHSStripped->getType()->isArrayType() && | ||||||||
11531 | RHSStripped->getType()->isArrayType()) { | ||||||||
11532 | S.Diag(Loc, diag::warn_depr_array_comparison) | ||||||||
11533 | << LHS->getSourceRange() << RHS->getSourceRange() | ||||||||
11534 | << LHSStripped->getType() << RHSStripped->getType(); | ||||||||
11535 | // Carry on to produce the tautological comparison warning, if this | ||||||||
11536 | // expression is potentially-evaluated, we can resolve the array to a | ||||||||
11537 | // non-weak declaration, and so on. | ||||||||
11538 | } | ||||||||
11539 | |||||||||
11540 | if (!LHS->getBeginLoc().isMacroID() && !RHS->getBeginLoc().isMacroID()) { | ||||||||
11541 | if (Expr::isSameComparisonOperand(LHS, RHS)) { | ||||||||
11542 | unsigned Result; | ||||||||
11543 | switch (Opc) { | ||||||||
11544 | case BO_EQ: | ||||||||
11545 | case BO_LE: | ||||||||
11546 | case BO_GE: | ||||||||
11547 | Result = AlwaysTrue; | ||||||||
11548 | break; | ||||||||
11549 | case BO_NE: | ||||||||
11550 | case BO_LT: | ||||||||
11551 | case BO_GT: | ||||||||
11552 | Result = AlwaysFalse; | ||||||||
11553 | break; | ||||||||
11554 | case BO_Cmp: | ||||||||
11555 | Result = AlwaysEqual; | ||||||||
11556 | break; | ||||||||
11557 | default: | ||||||||
11558 | Result = AlwaysConstant; | ||||||||
11559 | break; | ||||||||
11560 | } | ||||||||
11561 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||||||
11562 | S.PDiag(diag::warn_comparison_always) | ||||||||
11563 | << 0 /*self-comparison*/ | ||||||||
11564 | << Result); | ||||||||
11565 | } else if (checkForArray(LHSStripped) && checkForArray(RHSStripped)) { | ||||||||
11566 | // What is it always going to evaluate to? | ||||||||
11567 | unsigned Result; | ||||||||
11568 | switch (Opc) { | ||||||||
11569 | case BO_EQ: // e.g. array1 == array2 | ||||||||
11570 | Result = AlwaysFalse; | ||||||||
11571 | break; | ||||||||
11572 | case BO_NE: // e.g. array1 != array2 | ||||||||
11573 | Result = AlwaysTrue; | ||||||||
11574 | break; | ||||||||
11575 | default: // e.g. array1 <= array2 | ||||||||
11576 | // The best we can say is 'a constant' | ||||||||
11577 | Result = AlwaysConstant; | ||||||||
11578 | break; | ||||||||
11579 | } | ||||||||
11580 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||||||
11581 | S.PDiag(diag::warn_comparison_always) | ||||||||
11582 | << 1 /*array comparison*/ | ||||||||
11583 | << Result); | ||||||||
11584 | } | ||||||||
11585 | } | ||||||||
11586 | |||||||||
11587 | if (isa<CastExpr>(LHSStripped)) | ||||||||
11588 | LHSStripped = LHSStripped->IgnoreParenCasts(); | ||||||||
11589 | if (isa<CastExpr>(RHSStripped)) | ||||||||
11590 | RHSStripped = RHSStripped->IgnoreParenCasts(); | ||||||||
11591 | |||||||||
11592 | // Warn about comparisons against a string constant (unless the other | ||||||||
11593 | // operand is null); the user probably wants string comparison function. | ||||||||
11594 | Expr *LiteralString = nullptr; | ||||||||
11595 | Expr *LiteralStringStripped = nullptr; | ||||||||
11596 | if ((isa<StringLiteral>(LHSStripped) || isa<ObjCEncodeExpr>(LHSStripped)) && | ||||||||
11597 | !RHSStripped->isNullPointerConstant(S.Context, | ||||||||
11598 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
11599 | LiteralString = LHS; | ||||||||
11600 | LiteralStringStripped = LHSStripped; | ||||||||
11601 | } else if ((isa<StringLiteral>(RHSStripped) || | ||||||||
11602 | isa<ObjCEncodeExpr>(RHSStripped)) && | ||||||||
11603 | !LHSStripped->isNullPointerConstant(S.Context, | ||||||||
11604 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
11605 | LiteralString = RHS; | ||||||||
11606 | LiteralStringStripped = RHSStripped; | ||||||||
11607 | } | ||||||||
11608 | |||||||||
11609 | if (LiteralString) { | ||||||||
11610 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||||||
11611 | S.PDiag(diag::warn_stringcompare) | ||||||||
11612 | << isa<ObjCEncodeExpr>(LiteralStringStripped) | ||||||||
11613 | << LiteralString->getSourceRange()); | ||||||||
11614 | } | ||||||||
11615 | } | ||||||||
11616 | |||||||||
11617 | static ImplicitConversionKind castKindToImplicitConversionKind(CastKind CK) { | ||||||||
11618 | switch (CK) { | ||||||||
11619 | default: { | ||||||||
11620 | #ifndef NDEBUG | ||||||||
11621 | llvm::errs() << "unhandled cast kind: " << CastExpr::getCastKindName(CK) | ||||||||
11622 | << "\n"; | ||||||||
11623 | #endif | ||||||||
11624 | llvm_unreachable("unhandled cast kind")::llvm::llvm_unreachable_internal("unhandled cast kind", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11624); | ||||||||
11625 | } | ||||||||
11626 | case CK_UserDefinedConversion: | ||||||||
11627 | return ICK_Identity; | ||||||||
11628 | case CK_LValueToRValue: | ||||||||
11629 | return ICK_Lvalue_To_Rvalue; | ||||||||
11630 | case CK_ArrayToPointerDecay: | ||||||||
11631 | return ICK_Array_To_Pointer; | ||||||||
11632 | case CK_FunctionToPointerDecay: | ||||||||
11633 | return ICK_Function_To_Pointer; | ||||||||
11634 | case CK_IntegralCast: | ||||||||
11635 | return ICK_Integral_Conversion; | ||||||||
11636 | case CK_FloatingCast: | ||||||||
11637 | return ICK_Floating_Conversion; | ||||||||
11638 | case CK_IntegralToFloating: | ||||||||
11639 | case CK_FloatingToIntegral: | ||||||||
11640 | return ICK_Floating_Integral; | ||||||||
11641 | case CK_IntegralComplexCast: | ||||||||
11642 | case CK_FloatingComplexCast: | ||||||||
11643 | case CK_FloatingComplexToIntegralComplex: | ||||||||
11644 | case CK_IntegralComplexToFloatingComplex: | ||||||||
11645 | return ICK_Complex_Conversion; | ||||||||
11646 | case CK_FloatingComplexToReal: | ||||||||
11647 | case CK_FloatingRealToComplex: | ||||||||
11648 | case CK_IntegralComplexToReal: | ||||||||
11649 | case CK_IntegralRealToComplex: | ||||||||
11650 | return ICK_Complex_Real; | ||||||||
11651 | } | ||||||||
11652 | } | ||||||||
11653 | |||||||||
11654 | static bool checkThreeWayNarrowingConversion(Sema &S, QualType ToType, Expr *E, | ||||||||
11655 | QualType FromType, | ||||||||
11656 | SourceLocation Loc) { | ||||||||
11657 | // Check for a narrowing implicit conversion. | ||||||||
11658 | StandardConversionSequence SCS; | ||||||||
11659 | SCS.setAsIdentityConversion(); | ||||||||
11660 | SCS.setToType(0, FromType); | ||||||||
11661 | SCS.setToType(1, ToType); | ||||||||
11662 | if (const auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
11663 | SCS.Second = castKindToImplicitConversionKind(ICE->getCastKind()); | ||||||||
11664 | |||||||||
11665 | APValue PreNarrowingValue; | ||||||||
11666 | QualType PreNarrowingType; | ||||||||
11667 | switch (SCS.getNarrowingKind(S.Context, E, PreNarrowingValue, | ||||||||
11668 | PreNarrowingType, | ||||||||
11669 | /*IgnoreFloatToIntegralConversion*/ true)) { | ||||||||
11670 | case NK_Dependent_Narrowing: | ||||||||
11671 | // Implicit conversion to a narrower type, but the expression is | ||||||||
11672 | // value-dependent so we can't tell whether it's actually narrowing. | ||||||||
11673 | case NK_Not_Narrowing: | ||||||||
11674 | return false; | ||||||||
11675 | |||||||||
11676 | case NK_Constant_Narrowing: | ||||||||
11677 | // Implicit conversion to a narrower type, and the value is not a constant | ||||||||
11678 | // expression. | ||||||||
11679 | S.Diag(E->getBeginLoc(), diag::err_spaceship_argument_narrowing) | ||||||||
11680 | << /*Constant*/ 1 | ||||||||
11681 | << PreNarrowingValue.getAsString(S.Context, PreNarrowingType) << ToType; | ||||||||
11682 | return true; | ||||||||
11683 | |||||||||
11684 | case NK_Variable_Narrowing: | ||||||||
11685 | // Implicit conversion to a narrower type, and the value is not a constant | ||||||||
11686 | // expression. | ||||||||
11687 | case NK_Type_Narrowing: | ||||||||
11688 | S.Diag(E->getBeginLoc(), diag::err_spaceship_argument_narrowing) | ||||||||
11689 | << /*Constant*/ 0 << FromType << ToType; | ||||||||
11690 | // TODO: It's not a constant expression, but what if the user intended it | ||||||||
11691 | // to be? Can we produce notes to help them figure out why it isn't? | ||||||||
11692 | return true; | ||||||||
11693 | } | ||||||||
11694 | llvm_unreachable("unhandled case in switch")::llvm::llvm_unreachable_internal("unhandled case in switch", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11694); | ||||||||
11695 | } | ||||||||
11696 | |||||||||
11697 | static QualType checkArithmeticOrEnumeralThreeWayCompare(Sema &S, | ||||||||
11698 | ExprResult &LHS, | ||||||||
11699 | ExprResult &RHS, | ||||||||
11700 | SourceLocation Loc) { | ||||||||
11701 | QualType LHSType = LHS.get()->getType(); | ||||||||
11702 | QualType RHSType = RHS.get()->getType(); | ||||||||
11703 | // Dig out the original argument type and expression before implicit casts | ||||||||
11704 | // were applied. These are the types/expressions we need to check the | ||||||||
11705 | // [expr.spaceship] requirements against. | ||||||||
11706 | ExprResult LHSStripped = LHS.get()->IgnoreParenImpCasts(); | ||||||||
11707 | ExprResult RHSStripped = RHS.get()->IgnoreParenImpCasts(); | ||||||||
11708 | QualType LHSStrippedType = LHSStripped.get()->getType(); | ||||||||
11709 | QualType RHSStrippedType = RHSStripped.get()->getType(); | ||||||||
11710 | |||||||||
11711 | // C++2a [expr.spaceship]p3: If one of the operands is of type bool and the | ||||||||
11712 | // other is not, the program is ill-formed. | ||||||||
11713 | if (LHSStrippedType->isBooleanType() != RHSStrippedType->isBooleanType()) { | ||||||||
11714 | S.InvalidOperands(Loc, LHSStripped, RHSStripped); | ||||||||
11715 | return QualType(); | ||||||||
11716 | } | ||||||||
11717 | |||||||||
11718 | // FIXME: Consider combining this with checkEnumArithmeticConversions. | ||||||||
11719 | int NumEnumArgs = (int)LHSStrippedType->isEnumeralType() + | ||||||||
11720 | RHSStrippedType->isEnumeralType(); | ||||||||
11721 | if (NumEnumArgs == 1) { | ||||||||
11722 | bool LHSIsEnum = LHSStrippedType->isEnumeralType(); | ||||||||
11723 | QualType OtherTy = LHSIsEnum ? RHSStrippedType : LHSStrippedType; | ||||||||
11724 | if (OtherTy->hasFloatingRepresentation()) { | ||||||||
11725 | S.InvalidOperands(Loc, LHSStripped, RHSStripped); | ||||||||
11726 | return QualType(); | ||||||||
11727 | } | ||||||||
11728 | } | ||||||||
11729 | if (NumEnumArgs == 2) { | ||||||||
11730 | // C++2a [expr.spaceship]p5: If both operands have the same enumeration | ||||||||
11731 | // type E, the operator yields the result of converting the operands | ||||||||
11732 | // to the underlying type of E and applying <=> to the converted operands. | ||||||||
11733 | if (!S.Context.hasSameUnqualifiedType(LHSStrippedType, RHSStrippedType)) { | ||||||||
11734 | S.InvalidOperands(Loc, LHS, RHS); | ||||||||
11735 | return QualType(); | ||||||||
11736 | } | ||||||||
11737 | QualType IntType = | ||||||||
11738 | LHSStrippedType->castAs<EnumType>()->getDecl()->getIntegerType(); | ||||||||
11739 | assert(IntType->isArithmeticType())(static_cast <bool> (IntType->isArithmeticType()) ? void (0) : __assert_fail ("IntType->isArithmeticType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11739, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11740 | |||||||||
11741 | // We can't use `CK_IntegralCast` when the underlying type is 'bool', so we | ||||||||
11742 | // promote the boolean type, and all other promotable integer types, to | ||||||||
11743 | // avoid this. | ||||||||
11744 | if (IntType->isPromotableIntegerType()) | ||||||||
11745 | IntType = S.Context.getPromotedIntegerType(IntType); | ||||||||
11746 | |||||||||
11747 | LHS = S.ImpCastExprToType(LHS.get(), IntType, CK_IntegralCast); | ||||||||
11748 | RHS = S.ImpCastExprToType(RHS.get(), IntType, CK_IntegralCast); | ||||||||
11749 | LHSType = RHSType = IntType; | ||||||||
11750 | } | ||||||||
11751 | |||||||||
11752 | // C++2a [expr.spaceship]p4: If both operands have arithmetic types, the | ||||||||
11753 | // usual arithmetic conversions are applied to the operands. | ||||||||
11754 | QualType Type = | ||||||||
11755 | S.UsualArithmeticConversions(LHS, RHS, Loc, Sema::ACK_Comparison); | ||||||||
11756 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
11757 | return QualType(); | ||||||||
11758 | if (Type.isNull()) | ||||||||
11759 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
11760 | |||||||||
11761 | Optional<ComparisonCategoryType> CCT = | ||||||||
11762 | getComparisonCategoryForBuiltinCmp(Type); | ||||||||
11763 | if (!CCT) | ||||||||
11764 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
11765 | |||||||||
11766 | bool HasNarrowing = checkThreeWayNarrowingConversion( | ||||||||
11767 | S, Type, LHS.get(), LHSType, LHS.get()->getBeginLoc()); | ||||||||
11768 | HasNarrowing |= checkThreeWayNarrowingConversion(S, Type, RHS.get(), RHSType, | ||||||||
11769 | RHS.get()->getBeginLoc()); | ||||||||
11770 | if (HasNarrowing) | ||||||||
11771 | return QualType(); | ||||||||
11772 | |||||||||
11773 | assert(!Type.isNull() && "composite type for <=> has not been set")(static_cast <bool> (!Type.isNull() && "composite type for <=> has not been set" ) ? void (0) : __assert_fail ("!Type.isNull() && \"composite type for <=> has not been set\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11773, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11774 | |||||||||
11775 | return S.CheckComparisonCategoryType( | ||||||||
11776 | *CCT, Loc, Sema::ComparisonCategoryUsage::OperatorInExpression); | ||||||||
11777 | } | ||||||||
11778 | |||||||||
11779 | static QualType checkArithmeticOrEnumeralCompare(Sema &S, ExprResult &LHS, | ||||||||
11780 | ExprResult &RHS, | ||||||||
11781 | SourceLocation Loc, | ||||||||
11782 | BinaryOperatorKind Opc) { | ||||||||
11783 | if (Opc == BO_Cmp) | ||||||||
11784 | return checkArithmeticOrEnumeralThreeWayCompare(S, LHS, RHS, Loc); | ||||||||
11785 | |||||||||
11786 | // C99 6.5.8p3 / C99 6.5.9p4 | ||||||||
11787 | QualType Type = | ||||||||
11788 | S.UsualArithmeticConversions(LHS, RHS, Loc, Sema::ACK_Comparison); | ||||||||
11789 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
11790 | return QualType(); | ||||||||
11791 | if (Type.isNull()) | ||||||||
11792 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
11793 | assert(Type->isArithmeticType() || Type->isEnumeralType())(static_cast <bool> (Type->isArithmeticType() || Type ->isEnumeralType()) ? void (0) : __assert_fail ("Type->isArithmeticType() || Type->isEnumeralType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11793, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11794 | |||||||||
11795 | if (Type->isAnyComplexType() && BinaryOperator::isRelationalOp(Opc)) | ||||||||
11796 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
11797 | |||||||||
11798 | // Check for comparisons of floating point operands using != and ==. | ||||||||
11799 | if (Type->hasFloatingRepresentation() && BinaryOperator::isEqualityOp(Opc)) | ||||||||
11800 | S.CheckFloatComparison(Loc, LHS.get(), RHS.get()); | ||||||||
11801 | |||||||||
11802 | // The result of comparisons is 'bool' in C++, 'int' in C. | ||||||||
11803 | return S.Context.getLogicalOperationType(); | ||||||||
11804 | } | ||||||||
11805 | |||||||||
11806 | void Sema::CheckPtrComparisonWithNullChar(ExprResult &E, ExprResult &NullE) { | ||||||||
11807 | if (!NullE.get()->getType()->isAnyPointerType()) | ||||||||
11808 | return; | ||||||||
11809 | int NullValue = PP.isMacroDefined("NULL") ? 0 : 1; | ||||||||
11810 | if (!E.get()->getType()->isAnyPointerType() && | ||||||||
11811 | E.get()->isNullPointerConstant(Context, | ||||||||
11812 | Expr::NPC_ValueDependentIsNotNull) == | ||||||||
11813 | Expr::NPCK_ZeroExpression) { | ||||||||
11814 | if (const auto *CL = dyn_cast<CharacterLiteral>(E.get())) { | ||||||||
11815 | if (CL->getValue() == 0) | ||||||||
11816 | Diag(E.get()->getExprLoc(), diag::warn_pointer_compare) | ||||||||
11817 | << NullValue | ||||||||
11818 | << FixItHint::CreateReplacement(E.get()->getExprLoc(), | ||||||||
11819 | NullValue ? "NULL" : "(void *)0"); | ||||||||
11820 | } else if (const auto *CE = dyn_cast<CStyleCastExpr>(E.get())) { | ||||||||
11821 | TypeSourceInfo *TI = CE->getTypeInfoAsWritten(); | ||||||||
11822 | QualType T = Context.getCanonicalType(TI->getType()).getUnqualifiedType(); | ||||||||
11823 | if (T == Context.CharTy) | ||||||||
11824 | Diag(E.get()->getExprLoc(), diag::warn_pointer_compare) | ||||||||
11825 | << NullValue | ||||||||
11826 | << FixItHint::CreateReplacement(E.get()->getExprLoc(), | ||||||||
11827 | NullValue ? "NULL" : "(void *)0"); | ||||||||
11828 | } | ||||||||
11829 | } | ||||||||
11830 | } | ||||||||
11831 | |||||||||
11832 | // C99 6.5.8, C++ [expr.rel] | ||||||||
11833 | QualType Sema::CheckCompareOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
11834 | SourceLocation Loc, | ||||||||
11835 | BinaryOperatorKind Opc) { | ||||||||
11836 | bool IsRelational = BinaryOperator::isRelationalOp(Opc); | ||||||||
11837 | bool IsThreeWay = Opc == BO_Cmp; | ||||||||
11838 | bool IsOrdered = IsRelational || IsThreeWay; | ||||||||
11839 | auto IsAnyPointerType = [](ExprResult E) { | ||||||||
11840 | QualType Ty = E.get()->getType(); | ||||||||
11841 | return Ty->isPointerType() || Ty->isMemberPointerType(); | ||||||||
11842 | }; | ||||||||
11843 | |||||||||
11844 | // C++2a [expr.spaceship]p6: If at least one of the operands is of pointer | ||||||||
11845 | // type, array-to-pointer, ..., conversions are performed on both operands to | ||||||||
11846 | // bring them to their composite type. | ||||||||
11847 | // Otherwise, all comparisons expect an rvalue, so convert to rvalue before | ||||||||
11848 | // any type-related checks. | ||||||||
11849 | if (!IsThreeWay || IsAnyPointerType(LHS) || IsAnyPointerType(RHS)) { | ||||||||
11850 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
11851 | if (LHS.isInvalid()) | ||||||||
11852 | return QualType(); | ||||||||
11853 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
11854 | if (RHS.isInvalid()) | ||||||||
11855 | return QualType(); | ||||||||
11856 | } else { | ||||||||
11857 | LHS = DefaultLvalueConversion(LHS.get()); | ||||||||
11858 | if (LHS.isInvalid()) | ||||||||
11859 | return QualType(); | ||||||||
11860 | RHS = DefaultLvalueConversion(RHS.get()); | ||||||||
11861 | if (RHS.isInvalid()) | ||||||||
11862 | return QualType(); | ||||||||
11863 | } | ||||||||
11864 | |||||||||
11865 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/true); | ||||||||
11866 | if (!getLangOpts().CPlusPlus && BinaryOperator::isEqualityOp(Opc)) { | ||||||||
11867 | CheckPtrComparisonWithNullChar(LHS, RHS); | ||||||||
11868 | CheckPtrComparisonWithNullChar(RHS, LHS); | ||||||||
11869 | } | ||||||||
11870 | |||||||||
11871 | // Handle vector comparisons separately. | ||||||||
11872 | if (LHS.get()->getType()->isVectorType() || | ||||||||
11873 | RHS.get()->getType()->isVectorType()) | ||||||||
11874 | return CheckVectorCompareOperands(LHS, RHS, Loc, Opc); | ||||||||
11875 | |||||||||
11876 | diagnoseLogicalNotOnLHSofCheck(*this, LHS, RHS, Loc, Opc); | ||||||||
11877 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||||||
11878 | |||||||||
11879 | QualType LHSType = LHS.get()->getType(); | ||||||||
11880 | QualType RHSType = RHS.get()->getType(); | ||||||||
11881 | if ((LHSType->isArithmeticType() || LHSType->isEnumeralType()) && | ||||||||
11882 | (RHSType->isArithmeticType() || RHSType->isEnumeralType())) | ||||||||
11883 | return checkArithmeticOrEnumeralCompare(*this, LHS, RHS, Loc, Opc); | ||||||||
11884 | |||||||||
11885 | const Expr::NullPointerConstantKind LHSNullKind = | ||||||||
11886 | LHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); | ||||||||
11887 | const Expr::NullPointerConstantKind RHSNullKind = | ||||||||
11888 | RHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); | ||||||||
11889 | bool LHSIsNull = LHSNullKind != Expr::NPCK_NotNull; | ||||||||
11890 | bool RHSIsNull = RHSNullKind != Expr::NPCK_NotNull; | ||||||||
11891 | |||||||||
11892 | auto computeResultTy = [&]() { | ||||||||
11893 | if (Opc != BO_Cmp) | ||||||||
11894 | return Context.getLogicalOperationType(); | ||||||||
11895 | assert(getLangOpts().CPlusPlus)(static_cast <bool> (getLangOpts().CPlusPlus) ? void (0 ) : __assert_fail ("getLangOpts().CPlusPlus", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11895, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11896 | assert(Context.hasSameType(LHS.get()->getType(), RHS.get()->getType()))(static_cast <bool> (Context.hasSameType(LHS.get()-> getType(), RHS.get()->getType())) ? void (0) : __assert_fail ("Context.hasSameType(LHS.get()->getType(), RHS.get()->getType())" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11896, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11897 | |||||||||
11898 | QualType CompositeTy = LHS.get()->getType(); | ||||||||
11899 | assert(!CompositeTy->isReferenceType())(static_cast <bool> (!CompositeTy->isReferenceType() ) ? void (0) : __assert_fail ("!CompositeTy->isReferenceType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 11899, __extension__ __PRETTY_FUNCTION__)); | ||||||||
11900 | |||||||||
11901 | Optional<ComparisonCategoryType> CCT = | ||||||||
11902 | getComparisonCategoryForBuiltinCmp(CompositeTy); | ||||||||
11903 | if (!CCT) | ||||||||
11904 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
11905 | |||||||||
11906 | if (CompositeTy->isPointerType() && LHSIsNull != RHSIsNull) { | ||||||||
11907 | // P0946R0: Comparisons between a null pointer constant and an object | ||||||||
11908 | // pointer result in std::strong_equality, which is ill-formed under | ||||||||
11909 | // P1959R0. | ||||||||
11910 | Diag(Loc, diag::err_typecheck_three_way_comparison_of_pointer_and_zero) | ||||||||
11911 | << (LHSIsNull ? LHS.get()->getSourceRange() | ||||||||
11912 | : RHS.get()->getSourceRange()); | ||||||||
11913 | return QualType(); | ||||||||
11914 | } | ||||||||
11915 | |||||||||
11916 | return CheckComparisonCategoryType( | ||||||||
11917 | *CCT, Loc, ComparisonCategoryUsage::OperatorInExpression); | ||||||||
11918 | }; | ||||||||
11919 | |||||||||
11920 | if (!IsOrdered && LHSIsNull != RHSIsNull) { | ||||||||
11921 | bool IsEquality = Opc == BO_EQ; | ||||||||
11922 | if (RHSIsNull) | ||||||||
11923 | DiagnoseAlwaysNonNullPointer(LHS.get(), RHSNullKind, IsEquality, | ||||||||
11924 | RHS.get()->getSourceRange()); | ||||||||
11925 | else | ||||||||
11926 | DiagnoseAlwaysNonNullPointer(RHS.get(), LHSNullKind, IsEquality, | ||||||||
11927 | LHS.get()->getSourceRange()); | ||||||||
11928 | } | ||||||||
11929 | |||||||||
11930 | if (IsOrdered && LHSType->isFunctionPointerType() && | ||||||||
11931 | RHSType->isFunctionPointerType()) { | ||||||||
11932 | // Valid unless a relational comparison of function pointers | ||||||||
11933 | bool IsError = Opc == BO_Cmp; | ||||||||
11934 | auto DiagID = | ||||||||
11935 | IsError ? diag::err_typecheck_ordered_comparison_of_function_pointers | ||||||||
11936 | : getLangOpts().CPlusPlus | ||||||||
11937 | ? diag::warn_typecheck_ordered_comparison_of_function_pointers | ||||||||
11938 | : diag::ext_typecheck_ordered_comparison_of_function_pointers; | ||||||||
11939 | Diag(Loc, DiagID) << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
11940 | << RHS.get()->getSourceRange(); | ||||||||
11941 | if (IsError) | ||||||||
11942 | return QualType(); | ||||||||
11943 | } | ||||||||
11944 | |||||||||
11945 | if ((LHSType->isIntegerType() && !LHSIsNull) || | ||||||||
11946 | (RHSType->isIntegerType() && !RHSIsNull)) { | ||||||||
11947 | // Skip normal pointer conversion checks in this case; we have better | ||||||||
11948 | // diagnostics for this below. | ||||||||
11949 | } else if (getLangOpts().CPlusPlus) { | ||||||||
11950 | // Equality comparison of a function pointer to a void pointer is invalid, | ||||||||
11951 | // but we allow it as an extension. | ||||||||
11952 | // FIXME: If we really want to allow this, should it be part of composite | ||||||||
11953 | // pointer type computation so it works in conditionals too? | ||||||||
11954 | if (!IsOrdered && | ||||||||
11955 | ((LHSType->isFunctionPointerType() && RHSType->isVoidPointerType()) || | ||||||||
11956 | (RHSType->isFunctionPointerType() && LHSType->isVoidPointerType()))) { | ||||||||
11957 | // This is a gcc extension compatibility comparison. | ||||||||
11958 | // In a SFINAE context, we treat this as a hard error to maintain | ||||||||
11959 | // conformance with the C++ standard. | ||||||||
11960 | diagnoseFunctionPointerToVoidComparison( | ||||||||
11961 | *this, Loc, LHS, RHS, /*isError*/ (bool)isSFINAEContext()); | ||||||||
11962 | |||||||||
11963 | if (isSFINAEContext()) | ||||||||
11964 | return QualType(); | ||||||||
11965 | |||||||||
11966 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
11967 | return computeResultTy(); | ||||||||
11968 | } | ||||||||
11969 | |||||||||
11970 | // C++ [expr.eq]p2: | ||||||||
11971 | // If at least one operand is a pointer [...] bring them to their | ||||||||
11972 | // composite pointer type. | ||||||||
11973 | // C++ [expr.spaceship]p6 | ||||||||
11974 | // If at least one of the operands is of pointer type, [...] bring them | ||||||||
11975 | // to their composite pointer type. | ||||||||
11976 | // C++ [expr.rel]p2: | ||||||||
11977 | // If both operands are pointers, [...] bring them to their composite | ||||||||
11978 | // pointer type. | ||||||||
11979 | // For <=>, the only valid non-pointer types are arrays and functions, and | ||||||||
11980 | // we already decayed those, so this is really the same as the relational | ||||||||
11981 | // comparison rule. | ||||||||
11982 | if ((int)LHSType->isPointerType() + (int)RHSType->isPointerType() >= | ||||||||
11983 | (IsOrdered ? 2 : 1) && | ||||||||
11984 | (!LangOpts.ObjCAutoRefCount || !(LHSType->isObjCObjectPointerType() || | ||||||||
11985 | RHSType->isObjCObjectPointerType()))) { | ||||||||
11986 | if (convertPointersToCompositeType(*this, Loc, LHS, RHS)) | ||||||||
11987 | return QualType(); | ||||||||
11988 | return computeResultTy(); | ||||||||
11989 | } | ||||||||
11990 | } else if (LHSType->isPointerType() && | ||||||||
11991 | RHSType->isPointerType()) { // C99 6.5.8p2 | ||||||||
11992 | // All of the following pointer-related warnings are GCC extensions, except | ||||||||
11993 | // when handling null pointer constants. | ||||||||
11994 | QualType LCanPointeeTy = | ||||||||
11995 | LHSType->castAs<PointerType>()->getPointeeType().getCanonicalType(); | ||||||||
11996 | QualType RCanPointeeTy = | ||||||||
11997 | RHSType->castAs<PointerType>()->getPointeeType().getCanonicalType(); | ||||||||
11998 | |||||||||
11999 | // C99 6.5.9p2 and C99 6.5.8p2 | ||||||||
12000 | if (Context.typesAreCompatible(LCanPointeeTy.getUnqualifiedType(), | ||||||||
12001 | RCanPointeeTy.getUnqualifiedType())) { | ||||||||
12002 | if (IsRelational) { | ||||||||
12003 | // Pointers both need to point to complete or incomplete types | ||||||||
12004 | if ((LCanPointeeTy->isIncompleteType() != | ||||||||
12005 | RCanPointeeTy->isIncompleteType()) && | ||||||||
12006 | !getLangOpts().C11) { | ||||||||
12007 | Diag(Loc, diag::ext_typecheck_compare_complete_incomplete_pointers) | ||||||||
12008 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange() | ||||||||
12009 | << LHSType << RHSType << LCanPointeeTy->isIncompleteType() | ||||||||
12010 | << RCanPointeeTy->isIncompleteType(); | ||||||||
12011 | } | ||||||||
12012 | } | ||||||||
12013 | } else if (!IsRelational && | ||||||||
12014 | (LCanPointeeTy->isVoidType() || RCanPointeeTy->isVoidType())) { | ||||||||
12015 | // Valid unless comparison between non-null pointer and function pointer | ||||||||
12016 | if ((LCanPointeeTy->isFunctionType() || RCanPointeeTy->isFunctionType()) | ||||||||
12017 | && !LHSIsNull && !RHSIsNull) | ||||||||
12018 | diagnoseFunctionPointerToVoidComparison(*this, Loc, LHS, RHS, | ||||||||
12019 | /*isError*/false); | ||||||||
12020 | } else { | ||||||||
12021 | // Invalid | ||||||||
12022 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, /*isError*/false); | ||||||||
12023 | } | ||||||||
12024 | if (LCanPointeeTy != RCanPointeeTy) { | ||||||||
12025 | // Treat NULL constant as a special case in OpenCL. | ||||||||
12026 | if (getLangOpts().OpenCL && !LHSIsNull && !RHSIsNull) { | ||||||||
12027 | if (!LCanPointeeTy.isAddressSpaceOverlapping(RCanPointeeTy)) { | ||||||||
12028 | Diag(Loc, | ||||||||
12029 | diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||||||
12030 | << LHSType << RHSType << 0 /* comparison */ | ||||||||
12031 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
12032 | } | ||||||||
12033 | } | ||||||||
12034 | LangAS AddrSpaceL = LCanPointeeTy.getAddressSpace(); | ||||||||
12035 | LangAS AddrSpaceR = RCanPointeeTy.getAddressSpace(); | ||||||||
12036 | CastKind Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion | ||||||||
12037 | : CK_BitCast; | ||||||||
12038 | if (LHSIsNull && !RHSIsNull) | ||||||||
12039 | LHS = ImpCastExprToType(LHS.get(), RHSType, Kind); | ||||||||
12040 | else | ||||||||
12041 | RHS = ImpCastExprToType(RHS.get(), LHSType, Kind); | ||||||||
12042 | } | ||||||||
12043 | return computeResultTy(); | ||||||||
12044 | } | ||||||||
12045 | |||||||||
12046 | if (getLangOpts().CPlusPlus) { | ||||||||
12047 | // C++ [expr.eq]p4: | ||||||||
12048 | // Two operands of type std::nullptr_t or one operand of type | ||||||||
12049 | // std::nullptr_t and the other a null pointer constant compare equal. | ||||||||
12050 | if (!IsOrdered && LHSIsNull && RHSIsNull) { | ||||||||
12051 | if (LHSType->isNullPtrType()) { | ||||||||
12052 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
12053 | return computeResultTy(); | ||||||||
12054 | } | ||||||||
12055 | if (RHSType->isNullPtrType()) { | ||||||||
12056 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
12057 | return computeResultTy(); | ||||||||
12058 | } | ||||||||
12059 | } | ||||||||
12060 | |||||||||
12061 | // Comparison of Objective-C pointers and block pointers against nullptr_t. | ||||||||
12062 | // These aren't covered by the composite pointer type rules. | ||||||||
12063 | if (!IsOrdered && RHSType->isNullPtrType() && | ||||||||
12064 | (LHSType->isObjCObjectPointerType() || LHSType->isBlockPointerType())) { | ||||||||
12065 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
12066 | return computeResultTy(); | ||||||||
12067 | } | ||||||||
12068 | if (!IsOrdered && LHSType->isNullPtrType() && | ||||||||
12069 | (RHSType->isObjCObjectPointerType() || RHSType->isBlockPointerType())) { | ||||||||
12070 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
12071 | return computeResultTy(); | ||||||||
12072 | } | ||||||||
12073 | |||||||||
12074 | if (IsRelational && | ||||||||
12075 | ((LHSType->isNullPtrType() && RHSType->isPointerType()) || | ||||||||
12076 | (RHSType->isNullPtrType() && LHSType->isPointerType()))) { | ||||||||
12077 | // HACK: Relational comparison of nullptr_t against a pointer type is | ||||||||
12078 | // invalid per DR583, but we allow it within std::less<> and friends, | ||||||||
12079 | // since otherwise common uses of it break. | ||||||||
12080 | // FIXME: Consider removing this hack once LWG fixes std::less<> and | ||||||||
12081 | // friends to have std::nullptr_t overload candidates. | ||||||||
12082 | DeclContext *DC = CurContext; | ||||||||
12083 | if (isa<FunctionDecl>(DC)) | ||||||||
12084 | DC = DC->getParent(); | ||||||||
12085 | if (auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(DC)) { | ||||||||
12086 | if (CTSD->isInStdNamespace() && | ||||||||
12087 | llvm::StringSwitch<bool>(CTSD->getName()) | ||||||||
12088 | .Cases("less", "less_equal", "greater", "greater_equal", true) | ||||||||
12089 | .Default(false)) { | ||||||||
12090 | if (RHSType->isNullPtrType()) | ||||||||
12091 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
12092 | else | ||||||||
12093 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
12094 | return computeResultTy(); | ||||||||
12095 | } | ||||||||
12096 | } | ||||||||
12097 | } | ||||||||
12098 | |||||||||
12099 | // C++ [expr.eq]p2: | ||||||||
12100 | // If at least one operand is a pointer to member, [...] bring them to | ||||||||
12101 | // their composite pointer type. | ||||||||
12102 | if (!IsOrdered && | ||||||||
12103 | (LHSType->isMemberPointerType() || RHSType->isMemberPointerType())) { | ||||||||
12104 | if (convertPointersToCompositeType(*this, Loc, LHS, RHS)) | ||||||||
12105 | return QualType(); | ||||||||
12106 | else | ||||||||
12107 | return computeResultTy(); | ||||||||
12108 | } | ||||||||
12109 | } | ||||||||
12110 | |||||||||
12111 | // Handle block pointer types. | ||||||||
12112 | if (!IsOrdered && LHSType->isBlockPointerType() && | ||||||||
12113 | RHSType->isBlockPointerType()) { | ||||||||
12114 | QualType lpointee = LHSType->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
12115 | QualType rpointee = RHSType->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
12116 | |||||||||
12117 | if (!LHSIsNull && !RHSIsNull && | ||||||||
12118 | !Context.typesAreCompatible(lpointee, rpointee)) { | ||||||||
12119 | Diag(Loc, diag::err_typecheck_comparison_of_distinct_blocks) | ||||||||
12120 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
12121 | << RHS.get()->getSourceRange(); | ||||||||
12122 | } | ||||||||
12123 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
12124 | return computeResultTy(); | ||||||||
12125 | } | ||||||||
12126 | |||||||||
12127 | // Allow block pointers to be compared with null pointer constants. | ||||||||
12128 | if (!IsOrdered | ||||||||
12129 | && ((LHSType->isBlockPointerType() && RHSType->isPointerType()) | ||||||||
12130 | || (LHSType->isPointerType() && RHSType->isBlockPointerType()))) { | ||||||||
12131 | if (!LHSIsNull && !RHSIsNull) { | ||||||||
12132 | if (!((RHSType->isPointerType() && RHSType->castAs<PointerType>() | ||||||||
12133 | ->getPointeeType()->isVoidType()) | ||||||||
12134 | || (LHSType->isPointerType() && LHSType->castAs<PointerType>() | ||||||||
12135 | ->getPointeeType()->isVoidType()))) | ||||||||
12136 | Diag(Loc, diag::err_typecheck_comparison_of_distinct_blocks) | ||||||||
12137 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
12138 | << RHS.get()->getSourceRange(); | ||||||||
12139 | } | ||||||||
12140 | if (LHSIsNull && !RHSIsNull) | ||||||||
12141 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||||||
12142 | RHSType->isPointerType() ? CK_BitCast | ||||||||
12143 | : CK_AnyPointerToBlockPointerCast); | ||||||||
12144 | else | ||||||||
12145 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||||||
12146 | LHSType->isPointerType() ? CK_BitCast | ||||||||
12147 | : CK_AnyPointerToBlockPointerCast); | ||||||||
12148 | return computeResultTy(); | ||||||||
12149 | } | ||||||||
12150 | |||||||||
12151 | if (LHSType->isObjCObjectPointerType() || | ||||||||
12152 | RHSType->isObjCObjectPointerType()) { | ||||||||
12153 | const PointerType *LPT = LHSType->getAs<PointerType>(); | ||||||||
12154 | const PointerType *RPT = RHSType->getAs<PointerType>(); | ||||||||
12155 | if (LPT || RPT) { | ||||||||
12156 | bool LPtrToVoid = LPT ? LPT->getPointeeType()->isVoidType() : false; | ||||||||
12157 | bool RPtrToVoid = RPT ? RPT->getPointeeType()->isVoidType() : false; | ||||||||
12158 | |||||||||
12159 | if (!LPtrToVoid && !RPtrToVoid && | ||||||||
12160 | !Context.typesAreCompatible(LHSType, RHSType)) { | ||||||||
12161 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, | ||||||||
12162 | /*isError*/false); | ||||||||
12163 | } | ||||||||
12164 | // FIXME: If LPtrToVoid, we should presumably convert the LHS rather than | ||||||||
12165 | // the RHS, but we have test coverage for this behavior. | ||||||||
12166 | // FIXME: Consider using convertPointersToCompositeType in C++. | ||||||||
12167 | if (LHSIsNull && !RHSIsNull) { | ||||||||
12168 | Expr *E = LHS.get(); | ||||||||
12169 | if (getLangOpts().ObjCAutoRefCount) | ||||||||
12170 | CheckObjCConversion(SourceRange(), RHSType, E, | ||||||||
12171 | CCK_ImplicitConversion); | ||||||||
12172 | LHS = ImpCastExprToType(E, RHSType, | ||||||||
12173 | RPT ? CK_BitCast :CK_CPointerToObjCPointerCast); | ||||||||
12174 | } | ||||||||
12175 | else { | ||||||||
12176 | Expr *E = RHS.get(); | ||||||||
12177 | if (getLangOpts().ObjCAutoRefCount) | ||||||||
12178 | CheckObjCConversion(SourceRange(), LHSType, E, CCK_ImplicitConversion, | ||||||||
12179 | /*Diagnose=*/true, | ||||||||
12180 | /*DiagnoseCFAudited=*/false, Opc); | ||||||||
12181 | RHS = ImpCastExprToType(E, LHSType, | ||||||||
12182 | LPT ? CK_BitCast :CK_CPointerToObjCPointerCast); | ||||||||
12183 | } | ||||||||
12184 | return computeResultTy(); | ||||||||
12185 | } | ||||||||
12186 | if (LHSType->isObjCObjectPointerType() && | ||||||||
12187 | RHSType->isObjCObjectPointerType()) { | ||||||||
12188 | if (!Context.areComparableObjCPointerTypes(LHSType, RHSType)) | ||||||||
12189 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, | ||||||||
12190 | /*isError*/false); | ||||||||
12191 | if (isObjCObjectLiteral(LHS) || isObjCObjectLiteral(RHS)) | ||||||||
12192 | diagnoseObjCLiteralComparison(*this, Loc, LHS, RHS, Opc); | ||||||||
12193 | |||||||||
12194 | if (LHSIsNull && !RHSIsNull) | ||||||||
12195 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||||||
12196 | else | ||||||||
12197 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
12198 | return computeResultTy(); | ||||||||
12199 | } | ||||||||
12200 | |||||||||
12201 | if (!IsOrdered && LHSType->isBlockPointerType() && | ||||||||
12202 | RHSType->isBlockCompatibleObjCPointerType(Context)) { | ||||||||
12203 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||||||
12204 | CK_BlockPointerToObjCPointerCast); | ||||||||
12205 | return computeResultTy(); | ||||||||
12206 | } else if (!IsOrdered && | ||||||||
12207 | LHSType->isBlockCompatibleObjCPointerType(Context) && | ||||||||
12208 | RHSType->isBlockPointerType()) { | ||||||||
12209 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||||||
12210 | CK_BlockPointerToObjCPointerCast); | ||||||||
12211 | return computeResultTy(); | ||||||||
12212 | } | ||||||||
12213 | } | ||||||||
12214 | if ((LHSType->isAnyPointerType() && RHSType->isIntegerType()) || | ||||||||
12215 | (LHSType->isIntegerType() && RHSType->isAnyPointerType())) { | ||||||||
12216 | unsigned DiagID = 0; | ||||||||
12217 | bool isError = false; | ||||||||
12218 | if (LangOpts.DebuggerSupport) { | ||||||||
12219 | // Under a debugger, allow the comparison of pointers to integers, | ||||||||
12220 | // since users tend to want to compare addresses. | ||||||||
12221 | } else if ((LHSIsNull && LHSType->isIntegerType()) || | ||||||||
12222 | (RHSIsNull && RHSType->isIntegerType())) { | ||||||||
12223 | if (IsOrdered) { | ||||||||
12224 | isError = getLangOpts().CPlusPlus; | ||||||||
12225 | DiagID = | ||||||||
12226 | isError ? diag::err_typecheck_ordered_comparison_of_pointer_and_zero | ||||||||
12227 | : diag::ext_typecheck_ordered_comparison_of_pointer_and_zero; | ||||||||
12228 | } | ||||||||
12229 | } else if (getLangOpts().CPlusPlus) { | ||||||||
12230 | DiagID = diag::err_typecheck_comparison_of_pointer_integer; | ||||||||
12231 | isError = true; | ||||||||
12232 | } else if (IsOrdered) | ||||||||
12233 | DiagID = diag::ext_typecheck_ordered_comparison_of_pointer_integer; | ||||||||
12234 | else | ||||||||
12235 | DiagID = diag::ext_typecheck_comparison_of_pointer_integer; | ||||||||
12236 | |||||||||
12237 | if (DiagID) { | ||||||||
12238 | Diag(Loc, DiagID) | ||||||||
12239 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
12240 | << RHS.get()->getSourceRange(); | ||||||||
12241 | if (isError) | ||||||||
12242 | return QualType(); | ||||||||
12243 | } | ||||||||
12244 | |||||||||
12245 | if (LHSType->isIntegerType()) | ||||||||
12246 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||||||
12247 | LHSIsNull ? CK_NullToPointer : CK_IntegralToPointer); | ||||||||
12248 | else | ||||||||
12249 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||||||
12250 | RHSIsNull ? CK_NullToPointer : CK_IntegralToPointer); | ||||||||
12251 | return computeResultTy(); | ||||||||
12252 | } | ||||||||
12253 | |||||||||
12254 | // Handle block pointers. | ||||||||
12255 | if (!IsOrdered && RHSIsNull | ||||||||
12256 | && LHSType->isBlockPointerType() && RHSType->isIntegerType()) { | ||||||||
12257 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
12258 | return computeResultTy(); | ||||||||
12259 | } | ||||||||
12260 | if (!IsOrdered && LHSIsNull | ||||||||
12261 | && LHSType->isIntegerType() && RHSType->isBlockPointerType()) { | ||||||||
12262 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
12263 | return computeResultTy(); | ||||||||
12264 | } | ||||||||
12265 | |||||||||
12266 | if (getLangOpts().OpenCLVersion >= 200 || getLangOpts().OpenCLCPlusPlus) { | ||||||||
12267 | if (LHSType->isClkEventT() && RHSType->isClkEventT()) { | ||||||||
12268 | return computeResultTy(); | ||||||||
12269 | } | ||||||||
12270 | |||||||||
12271 | if (LHSType->isQueueT() && RHSType->isQueueT()) { | ||||||||
12272 | return computeResultTy(); | ||||||||
12273 | } | ||||||||
12274 | |||||||||
12275 | if (LHSIsNull && RHSType->isQueueT()) { | ||||||||
12276 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
12277 | return computeResultTy(); | ||||||||
12278 | } | ||||||||
12279 | |||||||||
12280 | if (LHSType->isQueueT() && RHSIsNull) { | ||||||||
12281 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
12282 | return computeResultTy(); | ||||||||
12283 | } | ||||||||
12284 | } | ||||||||
12285 | |||||||||
12286 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12287 | } | ||||||||
12288 | |||||||||
12289 | // Return a signed ext_vector_type that is of identical size and number of | ||||||||
12290 | // elements. For floating point vectors, return an integer type of identical | ||||||||
12291 | // size and number of elements. In the non ext_vector_type case, search from | ||||||||
12292 | // the largest type to the smallest type to avoid cases where long long == long, | ||||||||
12293 | // where long gets picked over long long. | ||||||||
12294 | QualType Sema::GetSignedVectorType(QualType V) { | ||||||||
12295 | const VectorType *VTy = V->castAs<VectorType>(); | ||||||||
12296 | unsigned TypeSize = Context.getTypeSize(VTy->getElementType()); | ||||||||
12297 | |||||||||
12298 | if (isa<ExtVectorType>(VTy)) { | ||||||||
12299 | if (TypeSize == Context.getTypeSize(Context.CharTy)) | ||||||||
12300 | return Context.getExtVectorType(Context.CharTy, VTy->getNumElements()); | ||||||||
12301 | else if (TypeSize == Context.getTypeSize(Context.ShortTy)) | ||||||||
12302 | return Context.getExtVectorType(Context.ShortTy, VTy->getNumElements()); | ||||||||
12303 | else if (TypeSize == Context.getTypeSize(Context.IntTy)) | ||||||||
12304 | return Context.getExtVectorType(Context.IntTy, VTy->getNumElements()); | ||||||||
12305 | else if (TypeSize == Context.getTypeSize(Context.LongTy)) | ||||||||
12306 | return Context.getExtVectorType(Context.LongTy, VTy->getNumElements()); | ||||||||
12307 | assert(TypeSize == Context.getTypeSize(Context.LongLongTy) &&(static_cast <bool> (TypeSize == Context.getTypeSize(Context .LongLongTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.LongLongTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12308, __extension__ __PRETTY_FUNCTION__)) | ||||||||
12308 | "Unhandled vector element size in vector compare")(static_cast <bool> (TypeSize == Context.getTypeSize(Context .LongLongTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.LongLongTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12308, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12309 | return Context.getExtVectorType(Context.LongLongTy, VTy->getNumElements()); | ||||||||
12310 | } | ||||||||
12311 | |||||||||
12312 | if (TypeSize == Context.getTypeSize(Context.LongLongTy)) | ||||||||
12313 | return Context.getVectorType(Context.LongLongTy, VTy->getNumElements(), | ||||||||
12314 | VectorType::GenericVector); | ||||||||
12315 | else if (TypeSize == Context.getTypeSize(Context.LongTy)) | ||||||||
12316 | return Context.getVectorType(Context.LongTy, VTy->getNumElements(), | ||||||||
12317 | VectorType::GenericVector); | ||||||||
12318 | else if (TypeSize == Context.getTypeSize(Context.IntTy)) | ||||||||
12319 | return Context.getVectorType(Context.IntTy, VTy->getNumElements(), | ||||||||
12320 | VectorType::GenericVector); | ||||||||
12321 | else if (TypeSize == Context.getTypeSize(Context.ShortTy)) | ||||||||
12322 | return Context.getVectorType(Context.ShortTy, VTy->getNumElements(), | ||||||||
12323 | VectorType::GenericVector); | ||||||||
12324 | assert(TypeSize == Context.getTypeSize(Context.CharTy) &&(static_cast <bool> (TypeSize == Context.getTypeSize(Context .CharTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.CharTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12325, __extension__ __PRETTY_FUNCTION__)) | ||||||||
12325 | "Unhandled vector element size in vector compare")(static_cast <bool> (TypeSize == Context.getTypeSize(Context .CharTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.CharTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12325, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12326 | return Context.getVectorType(Context.CharTy, VTy->getNumElements(), | ||||||||
12327 | VectorType::GenericVector); | ||||||||
12328 | } | ||||||||
12329 | |||||||||
12330 | /// CheckVectorCompareOperands - vector comparisons are a clang extension that | ||||||||
12331 | /// operates on extended vector types. Instead of producing an IntTy result, | ||||||||
12332 | /// like a scalar comparison, a vector comparison produces a vector of integer | ||||||||
12333 | /// types. | ||||||||
12334 | QualType Sema::CheckVectorCompareOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
12335 | SourceLocation Loc, | ||||||||
12336 | BinaryOperatorKind Opc) { | ||||||||
12337 | if (Opc == BO_Cmp) { | ||||||||
12338 | Diag(Loc, diag::err_three_way_vector_comparison); | ||||||||
12339 | return QualType(); | ||||||||
12340 | } | ||||||||
12341 | |||||||||
12342 | // Check to make sure we're operating on vectors of the same type and width, | ||||||||
12343 | // Allowing one side to be a scalar of element type. | ||||||||
12344 | QualType vType = CheckVectorOperands(LHS, RHS, Loc, /*isCompAssign*/false, | ||||||||
12345 | /*AllowBothBool*/true, | ||||||||
12346 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
12347 | if (vType.isNull()) | ||||||||
12348 | return vType; | ||||||||
12349 | |||||||||
12350 | QualType LHSType = LHS.get()->getType(); | ||||||||
12351 | |||||||||
12352 | // Determine the return type of a vector compare. By default clang will return | ||||||||
12353 | // a scalar for all vector compares except vector bool and vector pixel. | ||||||||
12354 | // With the gcc compiler we will always return a vector type and with the xl | ||||||||
12355 | // compiler we will always return a scalar type. This switch allows choosing | ||||||||
12356 | // which behavior is prefered. | ||||||||
12357 | if (getLangOpts().AltiVec) { | ||||||||
12358 | switch (getLangOpts().getAltivecSrcCompat()) { | ||||||||
12359 | case LangOptions::AltivecSrcCompatKind::Mixed: | ||||||||
12360 | // If AltiVec, the comparison results in a numeric type, i.e. | ||||||||
12361 | // bool for C++, int for C | ||||||||
12362 | if (vType->castAs<VectorType>()->getVectorKind() == | ||||||||
12363 | VectorType::AltiVecVector) | ||||||||
12364 | return Context.getLogicalOperationType(); | ||||||||
12365 | else | ||||||||
12366 | Diag(Loc, diag::warn_deprecated_altivec_src_compat); | ||||||||
12367 | break; | ||||||||
12368 | case LangOptions::AltivecSrcCompatKind::GCC: | ||||||||
12369 | // For GCC we always return the vector type. | ||||||||
12370 | break; | ||||||||
12371 | case LangOptions::AltivecSrcCompatKind::XL: | ||||||||
12372 | return Context.getLogicalOperationType(); | ||||||||
12373 | break; | ||||||||
12374 | } | ||||||||
12375 | } | ||||||||
12376 | |||||||||
12377 | // For non-floating point types, check for self-comparisons of the form | ||||||||
12378 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||||||
12379 | // often indicate logic errors in the program. | ||||||||
12380 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||||||
12381 | |||||||||
12382 | // Check for comparisons of floating point operands using != and ==. | ||||||||
12383 | if (BinaryOperator::isEqualityOp(Opc) && | ||||||||
12384 | LHSType->hasFloatingRepresentation()) { | ||||||||
12385 | assert(RHS.get()->getType()->hasFloatingRepresentation())(static_cast <bool> (RHS.get()->getType()->hasFloatingRepresentation ()) ? void (0) : __assert_fail ("RHS.get()->getType()->hasFloatingRepresentation()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12385, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12386 | CheckFloatComparison(Loc, LHS.get(), RHS.get()); | ||||||||
12387 | } | ||||||||
12388 | |||||||||
12389 | // Return a signed type for the vector. | ||||||||
12390 | return GetSignedVectorType(vType); | ||||||||
12391 | } | ||||||||
12392 | |||||||||
12393 | static void diagnoseXorMisusedAsPow(Sema &S, const ExprResult &XorLHS, | ||||||||
12394 | const ExprResult &XorRHS, | ||||||||
12395 | const SourceLocation Loc) { | ||||||||
12396 | // Do not diagnose macros. | ||||||||
12397 | if (Loc.isMacroID()) | ||||||||
12398 | return; | ||||||||
12399 | |||||||||
12400 | // Do not diagnose if both LHS and RHS are macros. | ||||||||
12401 | if (XorLHS.get()->getExprLoc().isMacroID() && | ||||||||
12402 | XorRHS.get()->getExprLoc().isMacroID()) | ||||||||
12403 | return; | ||||||||
12404 | |||||||||
12405 | bool Negative = false; | ||||||||
12406 | bool ExplicitPlus = false; | ||||||||
12407 | const auto *LHSInt = dyn_cast<IntegerLiteral>(XorLHS.get()); | ||||||||
12408 | const auto *RHSInt = dyn_cast<IntegerLiteral>(XorRHS.get()); | ||||||||
12409 | |||||||||
12410 | if (!LHSInt) | ||||||||
12411 | return; | ||||||||
12412 | if (!RHSInt) { | ||||||||
12413 | // Check negative literals. | ||||||||
12414 | if (const auto *UO = dyn_cast<UnaryOperator>(XorRHS.get())) { | ||||||||
12415 | UnaryOperatorKind Opc = UO->getOpcode(); | ||||||||
12416 | if (Opc != UO_Minus && Opc != UO_Plus) | ||||||||
12417 | return; | ||||||||
12418 | RHSInt = dyn_cast<IntegerLiteral>(UO->getSubExpr()); | ||||||||
12419 | if (!RHSInt) | ||||||||
12420 | return; | ||||||||
12421 | Negative = (Opc == UO_Minus); | ||||||||
12422 | ExplicitPlus = !Negative; | ||||||||
12423 | } else { | ||||||||
12424 | return; | ||||||||
12425 | } | ||||||||
12426 | } | ||||||||
12427 | |||||||||
12428 | const llvm::APInt &LeftSideValue = LHSInt->getValue(); | ||||||||
12429 | llvm::APInt RightSideValue = RHSInt->getValue(); | ||||||||
12430 | if (LeftSideValue != 2 && LeftSideValue != 10) | ||||||||
12431 | return; | ||||||||
12432 | |||||||||
12433 | if (LeftSideValue.getBitWidth() != RightSideValue.getBitWidth()) | ||||||||
12434 | return; | ||||||||
12435 | |||||||||
12436 | CharSourceRange ExprRange = CharSourceRange::getCharRange( | ||||||||
12437 | LHSInt->getBeginLoc(), S.getLocForEndOfToken(RHSInt->getLocation())); | ||||||||
12438 | llvm::StringRef ExprStr = | ||||||||
12439 | Lexer::getSourceText(ExprRange, S.getSourceManager(), S.getLangOpts()); | ||||||||
12440 | |||||||||
12441 | CharSourceRange XorRange = | ||||||||
12442 | CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); | ||||||||
12443 | llvm::StringRef XorStr = | ||||||||
12444 | Lexer::getSourceText(XorRange, S.getSourceManager(), S.getLangOpts()); | ||||||||
12445 | // Do not diagnose if xor keyword/macro is used. | ||||||||
12446 | if (XorStr == "xor") | ||||||||
12447 | return; | ||||||||
12448 | |||||||||
12449 | std::string LHSStr = std::string(Lexer::getSourceText( | ||||||||
12450 | CharSourceRange::getTokenRange(LHSInt->getSourceRange()), | ||||||||
12451 | S.getSourceManager(), S.getLangOpts())); | ||||||||
12452 | std::string RHSStr = std::string(Lexer::getSourceText( | ||||||||
12453 | CharSourceRange::getTokenRange(RHSInt->getSourceRange()), | ||||||||
12454 | S.getSourceManager(), S.getLangOpts())); | ||||||||
12455 | |||||||||
12456 | if (Negative) { | ||||||||
12457 | RightSideValue = -RightSideValue; | ||||||||
12458 | RHSStr = "-" + RHSStr; | ||||||||
12459 | } else if (ExplicitPlus) { | ||||||||
12460 | RHSStr = "+" + RHSStr; | ||||||||
12461 | } | ||||||||
12462 | |||||||||
12463 | StringRef LHSStrRef = LHSStr; | ||||||||
12464 | StringRef RHSStrRef = RHSStr; | ||||||||
12465 | // Do not diagnose literals with digit separators, binary, hexadecimal, octal | ||||||||
12466 | // literals. | ||||||||
12467 | if (LHSStrRef.startswith("0b") || LHSStrRef.startswith("0B") || | ||||||||
12468 | RHSStrRef.startswith("0b") || RHSStrRef.startswith("0B") || | ||||||||
12469 | LHSStrRef.startswith("0x") || LHSStrRef.startswith("0X") || | ||||||||
12470 | RHSStrRef.startswith("0x") || RHSStrRef.startswith("0X") || | ||||||||
12471 | (LHSStrRef.size() > 1 && LHSStrRef.startswith("0")) || | ||||||||
12472 | (RHSStrRef.size() > 1 && RHSStrRef.startswith("0")) || | ||||||||
12473 | LHSStrRef.find('\'') != StringRef::npos || | ||||||||
12474 | RHSStrRef.find('\'') != StringRef::npos) | ||||||||
12475 | return; | ||||||||
12476 | |||||||||
12477 | bool SuggestXor = | ||||||||
12478 | S.getLangOpts().CPlusPlus || S.getPreprocessor().isMacroDefined("xor"); | ||||||||
12479 | const llvm::APInt XorValue = LeftSideValue ^ RightSideValue; | ||||||||
12480 | int64_t RightSideIntValue = RightSideValue.getSExtValue(); | ||||||||
12481 | if (LeftSideValue == 2 && RightSideIntValue >= 0) { | ||||||||
12482 | std::string SuggestedExpr = "1 << " + RHSStr; | ||||||||
12483 | bool Overflow = false; | ||||||||
12484 | llvm::APInt One = (LeftSideValue - 1); | ||||||||
12485 | llvm::APInt PowValue = One.sshl_ov(RightSideValue, Overflow); | ||||||||
12486 | if (Overflow) { | ||||||||
12487 | if (RightSideIntValue < 64) | ||||||||
12488 | S.Diag(Loc, diag::warn_xor_used_as_pow_base) | ||||||||
12489 | << ExprStr << toString(XorValue, 10, true) << ("1LL << " + RHSStr) | ||||||||
12490 | << FixItHint::CreateReplacement(ExprRange, "1LL << " + RHSStr); | ||||||||
12491 | else if (RightSideIntValue == 64) | ||||||||
12492 | S.Diag(Loc, diag::warn_xor_used_as_pow) | ||||||||
12493 | << ExprStr << toString(XorValue, 10, true); | ||||||||
12494 | else | ||||||||
12495 | return; | ||||||||
12496 | } else { | ||||||||
12497 | S.Diag(Loc, diag::warn_xor_used_as_pow_base_extra) | ||||||||
12498 | << ExprStr << toString(XorValue, 10, true) << SuggestedExpr | ||||||||
12499 | << toString(PowValue, 10, true) | ||||||||
12500 | << FixItHint::CreateReplacement( | ||||||||
12501 | ExprRange, (RightSideIntValue == 0) ? "1" : SuggestedExpr); | ||||||||
12502 | } | ||||||||
12503 | |||||||||
12504 | S.Diag(Loc, diag::note_xor_used_as_pow_silence) | ||||||||
12505 | << ("0x2 ^ " + RHSStr) << SuggestXor; | ||||||||
12506 | } else if (LeftSideValue == 10) { | ||||||||
12507 | std::string SuggestedValue = "1e" + std::to_string(RightSideIntValue); | ||||||||
12508 | S.Diag(Loc, diag::warn_xor_used_as_pow_base) | ||||||||
12509 | << ExprStr << toString(XorValue, 10, true) << SuggestedValue | ||||||||
12510 | << FixItHint::CreateReplacement(ExprRange, SuggestedValue); | ||||||||
12511 | S.Diag(Loc, diag::note_xor_used_as_pow_silence) | ||||||||
12512 | << ("0xA ^ " + RHSStr) << SuggestXor; | ||||||||
12513 | } | ||||||||
12514 | } | ||||||||
12515 | |||||||||
12516 | QualType Sema::CheckVectorLogicalOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
12517 | SourceLocation Loc) { | ||||||||
12518 | // Ensure that either both operands are of the same vector type, or | ||||||||
12519 | // one operand is of a vector type and the other is of its element type. | ||||||||
12520 | QualType vType = CheckVectorOperands(LHS, RHS, Loc, false, | ||||||||
12521 | /*AllowBothBool*/true, | ||||||||
12522 | /*AllowBoolConversions*/false); | ||||||||
12523 | if (vType.isNull()) | ||||||||
12524 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12525 | if (getLangOpts().OpenCL && getLangOpts().OpenCLVersion < 120 && | ||||||||
12526 | !getLangOpts().OpenCLCPlusPlus && vType->hasFloatingRepresentation()) | ||||||||
12527 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12528 | // FIXME: The check for C++ here is for GCC compatibility. GCC rejects the | ||||||||
12529 | // usage of the logical operators && and || with vectors in C. This | ||||||||
12530 | // check could be notionally dropped. | ||||||||
12531 | if (!getLangOpts().CPlusPlus && | ||||||||
12532 | !(isa<ExtVectorType>(vType->getAs<VectorType>()))) | ||||||||
12533 | return InvalidLogicalVectorOperands(Loc, LHS, RHS); | ||||||||
12534 | |||||||||
12535 | return GetSignedVectorType(LHS.get()->getType()); | ||||||||
12536 | } | ||||||||
12537 | |||||||||
12538 | QualType Sema::CheckMatrixElementwiseOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
12539 | SourceLocation Loc, | ||||||||
12540 | bool IsCompAssign) { | ||||||||
12541 | if (!IsCompAssign) { | ||||||||
12542 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
12543 | if (LHS.isInvalid()) | ||||||||
12544 | return QualType(); | ||||||||
12545 | } | ||||||||
12546 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
12547 | if (RHS.isInvalid()) | ||||||||
12548 | return QualType(); | ||||||||
12549 | |||||||||
12550 | // For conversion purposes, we ignore any qualifiers. | ||||||||
12551 | // For example, "const float" and "float" are equivalent. | ||||||||
12552 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||||||
12553 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||||||
12554 | |||||||||
12555 | const MatrixType *LHSMatType = LHSType->getAs<MatrixType>(); | ||||||||
12556 | const MatrixType *RHSMatType = RHSType->getAs<MatrixType>(); | ||||||||
12557 | assert((LHSMatType || RHSMatType) && "At least one operand must be a matrix")(static_cast <bool> ((LHSMatType || RHSMatType) && "At least one operand must be a matrix") ? void (0) : __assert_fail ("(LHSMatType || RHSMatType) && \"At least one operand must be a matrix\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12557, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12558 | |||||||||
12559 | if (Context.hasSameType(LHSType, RHSType)) | ||||||||
12560 | return LHSType; | ||||||||
12561 | |||||||||
12562 | // Type conversion may change LHS/RHS. Keep copies to the original results, in | ||||||||
12563 | // case we have to return InvalidOperands. | ||||||||
12564 | ExprResult OriginalLHS = LHS; | ||||||||
12565 | ExprResult OriginalRHS = RHS; | ||||||||
12566 | if (LHSMatType && !RHSMatType) { | ||||||||
12567 | RHS = tryConvertExprToType(RHS.get(), LHSMatType->getElementType()); | ||||||||
12568 | if (!RHS.isInvalid()) | ||||||||
12569 | return LHSType; | ||||||||
12570 | |||||||||
12571 | return InvalidOperands(Loc, OriginalLHS, OriginalRHS); | ||||||||
12572 | } | ||||||||
12573 | |||||||||
12574 | if (!LHSMatType && RHSMatType) { | ||||||||
12575 | LHS = tryConvertExprToType(LHS.get(), RHSMatType->getElementType()); | ||||||||
12576 | if (!LHS.isInvalid()) | ||||||||
12577 | return RHSType; | ||||||||
12578 | return InvalidOperands(Loc, OriginalLHS, OriginalRHS); | ||||||||
12579 | } | ||||||||
12580 | |||||||||
12581 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12582 | } | ||||||||
12583 | |||||||||
12584 | QualType Sema::CheckMatrixMultiplyOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
12585 | SourceLocation Loc, | ||||||||
12586 | bool IsCompAssign) { | ||||||||
12587 | if (!IsCompAssign) { | ||||||||
12588 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
12589 | if (LHS.isInvalid()) | ||||||||
12590 | return QualType(); | ||||||||
12591 | } | ||||||||
12592 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
12593 | if (RHS.isInvalid()) | ||||||||
12594 | return QualType(); | ||||||||
12595 | |||||||||
12596 | auto *LHSMatType = LHS.get()->getType()->getAs<ConstantMatrixType>(); | ||||||||
12597 | auto *RHSMatType = RHS.get()->getType()->getAs<ConstantMatrixType>(); | ||||||||
12598 | assert((LHSMatType || RHSMatType) && "At least one operand must be a matrix")(static_cast <bool> ((LHSMatType || RHSMatType) && "At least one operand must be a matrix") ? void (0) : __assert_fail ("(LHSMatType || RHSMatType) && \"At least one operand must be a matrix\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12598, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12599 | |||||||||
12600 | if (LHSMatType && RHSMatType) { | ||||||||
12601 | if (LHSMatType->getNumColumns() != RHSMatType->getNumRows()) | ||||||||
12602 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12603 | |||||||||
12604 | if (!Context.hasSameType(LHSMatType->getElementType(), | ||||||||
12605 | RHSMatType->getElementType())) | ||||||||
12606 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12607 | |||||||||
12608 | return Context.getConstantMatrixType(LHSMatType->getElementType(), | ||||||||
12609 | LHSMatType->getNumRows(), | ||||||||
12610 | RHSMatType->getNumColumns()); | ||||||||
12611 | } | ||||||||
12612 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, IsCompAssign); | ||||||||
12613 | } | ||||||||
12614 | |||||||||
12615 | inline QualType Sema::CheckBitwiseOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
12616 | SourceLocation Loc, | ||||||||
12617 | BinaryOperatorKind Opc) { | ||||||||
12618 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
12619 | |||||||||
12620 | bool IsCompAssign = | ||||||||
12621 | Opc == BO_AndAssign || Opc == BO_OrAssign || Opc == BO_XorAssign; | ||||||||
12622 | |||||||||
12623 | if (LHS.get()->getType()->isVectorType() || | ||||||||
12624 | RHS.get()->getType()->isVectorType()) { | ||||||||
12625 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||||||
12626 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||||||
12627 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||||||
12628 | /*AllowBothBool*/true, | ||||||||
12629 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
12630 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12631 | } | ||||||||
12632 | |||||||||
12633 | if (Opc == BO_And) | ||||||||
12634 | diagnoseLogicalNotOnLHSofCheck(*this, LHS, RHS, Loc, Opc); | ||||||||
12635 | |||||||||
12636 | if (LHS.get()->getType()->hasFloatingRepresentation() || | ||||||||
12637 | RHS.get()->getType()->hasFloatingRepresentation()) | ||||||||
12638 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12639 | |||||||||
12640 | ExprResult LHSResult = LHS, RHSResult = RHS; | ||||||||
12641 | QualType compType = UsualArithmeticConversions( | ||||||||
12642 | LHSResult, RHSResult, Loc, IsCompAssign ? ACK_CompAssign : ACK_BitwiseOp); | ||||||||
12643 | if (LHSResult.isInvalid() || RHSResult.isInvalid()) | ||||||||
12644 | return QualType(); | ||||||||
12645 | LHS = LHSResult.get(); | ||||||||
12646 | RHS = RHSResult.get(); | ||||||||
12647 | |||||||||
12648 | if (Opc == BO_Xor) | ||||||||
12649 | diagnoseXorMisusedAsPow(*this, LHS, RHS, Loc); | ||||||||
12650 | |||||||||
12651 | if (!compType.isNull() && compType->isIntegralOrUnscopedEnumerationType()) | ||||||||
12652 | return compType; | ||||||||
12653 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12654 | } | ||||||||
12655 | |||||||||
12656 | // C99 6.5.[13,14] | ||||||||
12657 | inline QualType Sema::CheckLogicalOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
12658 | SourceLocation Loc, | ||||||||
12659 | BinaryOperatorKind Opc) { | ||||||||
12660 | // Check vector operands differently. | ||||||||
12661 | if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) | ||||||||
12662 | return CheckVectorLogicalOperands(LHS, RHS, Loc); | ||||||||
12663 | |||||||||
12664 | bool EnumConstantInBoolContext = false; | ||||||||
12665 | for (const ExprResult &HS : {LHS, RHS}) { | ||||||||
12666 | if (const auto *DREHS = dyn_cast<DeclRefExpr>(HS.get())) { | ||||||||
12667 | const auto *ECDHS = dyn_cast<EnumConstantDecl>(DREHS->getDecl()); | ||||||||
12668 | if (ECDHS && ECDHS->getInitVal() != 0 && ECDHS->getInitVal() != 1) | ||||||||
12669 | EnumConstantInBoolContext = true; | ||||||||
12670 | } | ||||||||
12671 | } | ||||||||
12672 | |||||||||
12673 | if (EnumConstantInBoolContext) | ||||||||
12674 | Diag(Loc, diag::warn_enum_constant_in_bool_context); | ||||||||
12675 | |||||||||
12676 | // Diagnose cases where the user write a logical and/or but probably meant a | ||||||||
12677 | // bitwise one. We do this when the LHS is a non-bool integer and the RHS | ||||||||
12678 | // is a constant. | ||||||||
12679 | if (!EnumConstantInBoolContext && LHS.get()->getType()->isIntegerType() && | ||||||||
12680 | !LHS.get()->getType()->isBooleanType() && | ||||||||
12681 | RHS.get()->getType()->isIntegerType() && !RHS.get()->isValueDependent() && | ||||||||
12682 | // Don't warn in macros or template instantiations. | ||||||||
12683 | !Loc.isMacroID() && !inTemplateInstantiation()) { | ||||||||
12684 | // If the RHS can be constant folded, and if it constant folds to something | ||||||||
12685 | // that isn't 0 or 1 (which indicate a potential logical operation that | ||||||||
12686 | // happened to fold to true/false) then warn. | ||||||||
12687 | // Parens on the RHS are ignored. | ||||||||
12688 | Expr::EvalResult EVResult; | ||||||||
12689 | if (RHS.get()->EvaluateAsInt(EVResult, Context)) { | ||||||||
12690 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||||||
12691 | if ((getLangOpts().Bool && !RHS.get()->getType()->isBooleanType() && | ||||||||
12692 | !RHS.get()->getExprLoc().isMacroID()) || | ||||||||
12693 | (Result != 0 && Result != 1)) { | ||||||||
12694 | Diag(Loc, diag::warn_logical_instead_of_bitwise) | ||||||||
12695 | << RHS.get()->getSourceRange() | ||||||||
12696 | << (Opc == BO_LAnd ? "&&" : "||"); | ||||||||
12697 | // Suggest replacing the logical operator with the bitwise version | ||||||||
12698 | Diag(Loc, diag::note_logical_instead_of_bitwise_change_operator) | ||||||||
12699 | << (Opc == BO_LAnd ? "&" : "|") | ||||||||
12700 | << FixItHint::CreateReplacement(SourceRange( | ||||||||
12701 | Loc, getLocForEndOfToken(Loc)), | ||||||||
12702 | Opc == BO_LAnd ? "&" : "|"); | ||||||||
12703 | if (Opc == BO_LAnd) | ||||||||
12704 | // Suggest replacing "Foo() && kNonZero" with "Foo()" | ||||||||
12705 | Diag(Loc, diag::note_logical_instead_of_bitwise_remove_constant) | ||||||||
12706 | << FixItHint::CreateRemoval( | ||||||||
12707 | SourceRange(getLocForEndOfToken(LHS.get()->getEndLoc()), | ||||||||
12708 | RHS.get()->getEndLoc())); | ||||||||
12709 | } | ||||||||
12710 | } | ||||||||
12711 | } | ||||||||
12712 | |||||||||
12713 | if (!Context.getLangOpts().CPlusPlus) { | ||||||||
12714 | // OpenCL v1.1 s6.3.g: The logical operators and (&&), or (||) do | ||||||||
12715 | // not operate on the built-in scalar and vector float types. | ||||||||
12716 | if (Context.getLangOpts().OpenCL && | ||||||||
12717 | Context.getLangOpts().OpenCLVersion < 120) { | ||||||||
12718 | if (LHS.get()->getType()->isFloatingType() || | ||||||||
12719 | RHS.get()->getType()->isFloatingType()) | ||||||||
12720 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12721 | } | ||||||||
12722 | |||||||||
12723 | LHS = UsualUnaryConversions(LHS.get()); | ||||||||
12724 | if (LHS.isInvalid()) | ||||||||
12725 | return QualType(); | ||||||||
12726 | |||||||||
12727 | RHS = UsualUnaryConversions(RHS.get()); | ||||||||
12728 | if (RHS.isInvalid()) | ||||||||
12729 | return QualType(); | ||||||||
12730 | |||||||||
12731 | if (!LHS.get()->getType()->isScalarType() || | ||||||||
12732 | !RHS.get()->getType()->isScalarType()) | ||||||||
12733 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12734 | |||||||||
12735 | return Context.IntTy; | ||||||||
12736 | } | ||||||||
12737 | |||||||||
12738 | // The following is safe because we only use this method for | ||||||||
12739 | // non-overloadable operands. | ||||||||
12740 | |||||||||
12741 | // C++ [expr.log.and]p1 | ||||||||
12742 | // C++ [expr.log.or]p1 | ||||||||
12743 | // The operands are both contextually converted to type bool. | ||||||||
12744 | ExprResult LHSRes = PerformContextuallyConvertToBool(LHS.get()); | ||||||||
12745 | if (LHSRes.isInvalid()) | ||||||||
12746 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12747 | LHS = LHSRes; | ||||||||
12748 | |||||||||
12749 | ExprResult RHSRes = PerformContextuallyConvertToBool(RHS.get()); | ||||||||
12750 | if (RHSRes.isInvalid()) | ||||||||
12751 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
12752 | RHS = RHSRes; | ||||||||
12753 | |||||||||
12754 | // C++ [expr.log.and]p2 | ||||||||
12755 | // C++ [expr.log.or]p2 | ||||||||
12756 | // The result is a bool. | ||||||||
12757 | return Context.BoolTy; | ||||||||
12758 | } | ||||||||
12759 | |||||||||
12760 | static bool IsReadonlyMessage(Expr *E, Sema &S) { | ||||||||
12761 | const MemberExpr *ME = dyn_cast<MemberExpr>(E); | ||||||||
12762 | if (!ME) return false; | ||||||||
12763 | if (!isa<FieldDecl>(ME->getMemberDecl())) return false; | ||||||||
12764 | ObjCMessageExpr *Base = dyn_cast<ObjCMessageExpr>( | ||||||||
12765 | ME->getBase()->IgnoreImplicit()->IgnoreParenImpCasts()); | ||||||||
12766 | if (!Base) return false; | ||||||||
12767 | return Base->getMethodDecl() != nullptr; | ||||||||
12768 | } | ||||||||
12769 | |||||||||
12770 | /// Is the given expression (which must be 'const') a reference to a | ||||||||
12771 | /// variable which was originally non-const, but which has become | ||||||||
12772 | /// 'const' due to being captured within a block? | ||||||||
12773 | enum NonConstCaptureKind { NCCK_None, NCCK_Block, NCCK_Lambda }; | ||||||||
12774 | static NonConstCaptureKind isReferenceToNonConstCapture(Sema &S, Expr *E) { | ||||||||
12775 | assert(E->isLValue() && E->getType().isConstQualified())(static_cast <bool> (E->isLValue() && E-> getType().isConstQualified()) ? void (0) : __assert_fail ("E->isLValue() && E->getType().isConstQualified()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12775, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12776 | E = E->IgnoreParens(); | ||||||||
12777 | |||||||||
12778 | // Must be a reference to a declaration from an enclosing scope. | ||||||||
12779 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||||||
12780 | if (!DRE) return NCCK_None; | ||||||||
12781 | if (!DRE->refersToEnclosingVariableOrCapture()) return NCCK_None; | ||||||||
12782 | |||||||||
12783 | // The declaration must be a variable which is not declared 'const'. | ||||||||
12784 | VarDecl *var = dyn_cast<VarDecl>(DRE->getDecl()); | ||||||||
12785 | if (!var) return NCCK_None; | ||||||||
12786 | if (var->getType().isConstQualified()) return NCCK_None; | ||||||||
12787 | assert(var->hasLocalStorage() && "capture added 'const' to non-local?")(static_cast <bool> (var->hasLocalStorage() && "capture added 'const' to non-local?") ? void (0) : __assert_fail ("var->hasLocalStorage() && \"capture added 'const' to non-local?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12787, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12788 | |||||||||
12789 | // Decide whether the first capture was for a block or a lambda. | ||||||||
12790 | DeclContext *DC = S.CurContext, *Prev = nullptr; | ||||||||
12791 | // Decide whether the first capture was for a block or a lambda. | ||||||||
12792 | while (DC) { | ||||||||
12793 | // For init-capture, it is possible that the variable belongs to the | ||||||||
12794 | // template pattern of the current context. | ||||||||
12795 | if (auto *FD = dyn_cast<FunctionDecl>(DC)) | ||||||||
12796 | if (var->isInitCapture() && | ||||||||
12797 | FD->getTemplateInstantiationPattern() == var->getDeclContext()) | ||||||||
12798 | break; | ||||||||
12799 | if (DC == var->getDeclContext()) | ||||||||
12800 | break; | ||||||||
12801 | Prev = DC; | ||||||||
12802 | DC = DC->getParent(); | ||||||||
12803 | } | ||||||||
12804 | // Unless we have an init-capture, we've gone one step too far. | ||||||||
12805 | if (!var->isInitCapture()) | ||||||||
12806 | DC = Prev; | ||||||||
12807 | return (isa<BlockDecl>(DC) ? NCCK_Block : NCCK_Lambda); | ||||||||
12808 | } | ||||||||
12809 | |||||||||
12810 | static bool IsTypeModifiable(QualType Ty, bool IsDereference) { | ||||||||
12811 | Ty = Ty.getNonReferenceType(); | ||||||||
12812 | if (IsDereference && Ty->isPointerType()) | ||||||||
12813 | Ty = Ty->getPointeeType(); | ||||||||
12814 | return !Ty.isConstQualified(); | ||||||||
12815 | } | ||||||||
12816 | |||||||||
12817 | // Update err_typecheck_assign_const and note_typecheck_assign_const | ||||||||
12818 | // when this enum is changed. | ||||||||
12819 | enum { | ||||||||
12820 | ConstFunction, | ||||||||
12821 | ConstVariable, | ||||||||
12822 | ConstMember, | ||||||||
12823 | ConstMethod, | ||||||||
12824 | NestedConstMember, | ||||||||
12825 | ConstUnknown, // Keep as last element | ||||||||
12826 | }; | ||||||||
12827 | |||||||||
12828 | /// Emit the "read-only variable not assignable" error and print notes to give | ||||||||
12829 | /// more information about why the variable is not assignable, such as pointing | ||||||||
12830 | /// to the declaration of a const variable, showing that a method is const, or | ||||||||
12831 | /// that the function is returning a const reference. | ||||||||
12832 | static void DiagnoseConstAssignment(Sema &S, const Expr *E, | ||||||||
12833 | SourceLocation Loc) { | ||||||||
12834 | SourceRange ExprRange = E->getSourceRange(); | ||||||||
12835 | |||||||||
12836 | // Only emit one error on the first const found. All other consts will emit | ||||||||
12837 | // a note to the error. | ||||||||
12838 | bool DiagnosticEmitted = false; | ||||||||
12839 | |||||||||
12840 | // Track if the current expression is the result of a dereference, and if the | ||||||||
12841 | // next checked expression is the result of a dereference. | ||||||||
12842 | bool IsDereference = false; | ||||||||
12843 | bool NextIsDereference = false; | ||||||||
12844 | |||||||||
12845 | // Loop to process MemberExpr chains. | ||||||||
12846 | while (true) { | ||||||||
12847 | IsDereference = NextIsDereference; | ||||||||
12848 | |||||||||
12849 | E = E->IgnoreImplicit()->IgnoreParenImpCasts(); | ||||||||
12850 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { | ||||||||
12851 | NextIsDereference = ME->isArrow(); | ||||||||
12852 | const ValueDecl *VD = ME->getMemberDecl(); | ||||||||
12853 | if (const FieldDecl *Field = dyn_cast<FieldDecl>(VD)) { | ||||||||
12854 | // Mutable fields can be modified even if the class is const. | ||||||||
12855 | if (Field->isMutable()) { | ||||||||
12856 | assert(DiagnosticEmitted && "Expected diagnostic not emitted.")(static_cast <bool> (DiagnosticEmitted && "Expected diagnostic not emitted." ) ? void (0) : __assert_fail ("DiagnosticEmitted && \"Expected diagnostic not emitted.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 12856, __extension__ __PRETTY_FUNCTION__)); | ||||||||
12857 | break; | ||||||||
12858 | } | ||||||||
12859 | |||||||||
12860 | if (!IsTypeModifiable(Field->getType(), IsDereference)) { | ||||||||
12861 | if (!DiagnosticEmitted) { | ||||||||
12862 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
12863 | << ExprRange << ConstMember << false /*static*/ << Field | ||||||||
12864 | << Field->getType(); | ||||||||
12865 | DiagnosticEmitted = true; | ||||||||
12866 | } | ||||||||
12867 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
12868 | << ConstMember << false /*static*/ << Field << Field->getType() | ||||||||
12869 | << Field->getSourceRange(); | ||||||||
12870 | } | ||||||||
12871 | E = ME->getBase(); | ||||||||
12872 | continue; | ||||||||
12873 | } else if (const VarDecl *VDecl = dyn_cast<VarDecl>(VD)) { | ||||||||
12874 | if (VDecl->getType().isConstQualified()) { | ||||||||
12875 | if (!DiagnosticEmitted) { | ||||||||
12876 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
12877 | << ExprRange << ConstMember << true /*static*/ << VDecl | ||||||||
12878 | << VDecl->getType(); | ||||||||
12879 | DiagnosticEmitted = true; | ||||||||
12880 | } | ||||||||
12881 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
12882 | << ConstMember << true /*static*/ << VDecl << VDecl->getType() | ||||||||
12883 | << VDecl->getSourceRange(); | ||||||||
12884 | } | ||||||||
12885 | // Static fields do not inherit constness from parents. | ||||||||
12886 | break; | ||||||||
12887 | } | ||||||||
12888 | break; // End MemberExpr | ||||||||
12889 | } else if (const ArraySubscriptExpr *ASE = | ||||||||
12890 | dyn_cast<ArraySubscriptExpr>(E)) { | ||||||||
12891 | E = ASE->getBase()->IgnoreParenImpCasts(); | ||||||||
12892 | continue; | ||||||||
12893 | } else if (const ExtVectorElementExpr *EVE = | ||||||||
12894 | dyn_cast<ExtVectorElementExpr>(E)) { | ||||||||
12895 | E = EVE->getBase()->IgnoreParenImpCasts(); | ||||||||
12896 | continue; | ||||||||
12897 | } | ||||||||
12898 | break; | ||||||||
12899 | } | ||||||||
12900 | |||||||||
12901 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { | ||||||||
12902 | // Function calls | ||||||||
12903 | const FunctionDecl *FD = CE->getDirectCallee(); | ||||||||
12904 | if (FD && !IsTypeModifiable(FD->getReturnType(), IsDereference)) { | ||||||||
12905 | if (!DiagnosticEmitted) { | ||||||||
12906 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange | ||||||||
12907 | << ConstFunction << FD; | ||||||||
12908 | DiagnosticEmitted = true; | ||||||||
12909 | } | ||||||||
12910 | S.Diag(FD->getReturnTypeSourceRange().getBegin(), | ||||||||
12911 | diag::note_typecheck_assign_const) | ||||||||
12912 | << ConstFunction << FD << FD->getReturnType() | ||||||||
12913 | << FD->getReturnTypeSourceRange(); | ||||||||
12914 | } | ||||||||
12915 | } else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||||||
12916 | // Point to variable declaration. | ||||||||
12917 | if (const ValueDecl *VD = DRE->getDecl()) { | ||||||||
12918 | if (!IsTypeModifiable(VD->getType(), IsDereference)) { | ||||||||
12919 | if (!DiagnosticEmitted) { | ||||||||
12920 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
12921 | << ExprRange << ConstVariable << VD << VD->getType(); | ||||||||
12922 | DiagnosticEmitted = true; | ||||||||
12923 | } | ||||||||
12924 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
12925 | << ConstVariable << VD << VD->getType() << VD->getSourceRange(); | ||||||||
12926 | } | ||||||||
12927 | } | ||||||||
12928 | } else if (isa<CXXThisExpr>(E)) { | ||||||||
12929 | if (const DeclContext *DC = S.getFunctionLevelDeclContext()) { | ||||||||
12930 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(DC)) { | ||||||||
12931 | if (MD->isConst()) { | ||||||||
12932 | if (!DiagnosticEmitted) { | ||||||||
12933 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange | ||||||||
12934 | << ConstMethod << MD; | ||||||||
12935 | DiagnosticEmitted = true; | ||||||||
12936 | } | ||||||||
12937 | S.Diag(MD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
12938 | << ConstMethod << MD << MD->getSourceRange(); | ||||||||
12939 | } | ||||||||
12940 | } | ||||||||
12941 | } | ||||||||
12942 | } | ||||||||
12943 | |||||||||
12944 | if (DiagnosticEmitted) | ||||||||
12945 | return; | ||||||||
12946 | |||||||||
12947 | // Can't determine a more specific message, so display the generic error. | ||||||||
12948 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange << ConstUnknown; | ||||||||
12949 | } | ||||||||
12950 | |||||||||
12951 | enum OriginalExprKind { | ||||||||
12952 | OEK_Variable, | ||||||||
12953 | OEK_Member, | ||||||||
12954 | OEK_LValue | ||||||||
12955 | }; | ||||||||
12956 | |||||||||
12957 | static void DiagnoseRecursiveConstFields(Sema &S, const ValueDecl *VD, | ||||||||
12958 | const RecordType *Ty, | ||||||||
12959 | SourceLocation Loc, SourceRange Range, | ||||||||
12960 | OriginalExprKind OEK, | ||||||||
12961 | bool &DiagnosticEmitted) { | ||||||||
12962 | std::vector<const RecordType *> RecordTypeList; | ||||||||
12963 | RecordTypeList.push_back(Ty); | ||||||||
12964 | unsigned NextToCheckIndex = 0; | ||||||||
12965 | // We walk the record hierarchy breadth-first to ensure that we print | ||||||||
12966 | // diagnostics in field nesting order. | ||||||||
12967 | while (RecordTypeList.size() > NextToCheckIndex) { | ||||||||
12968 | bool IsNested = NextToCheckIndex > 0; | ||||||||
12969 | for (const FieldDecl *Field : | ||||||||
12970 | RecordTypeList[NextToCheckIndex]->getDecl()->fields()) { | ||||||||
12971 | // First, check every field for constness. | ||||||||
12972 | QualType FieldTy = Field->getType(); | ||||||||
12973 | if (FieldTy.isConstQualified()) { | ||||||||
12974 | if (!DiagnosticEmitted) { | ||||||||
12975 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
12976 | << Range << NestedConstMember << OEK << VD | ||||||||
12977 | << IsNested << Field; | ||||||||
12978 | DiagnosticEmitted = true; | ||||||||
12979 | } | ||||||||
12980 | S.Diag(Field->getLocation(), diag::note_typecheck_assign_const) | ||||||||
12981 | << NestedConstMember << IsNested << Field | ||||||||
12982 | << FieldTy << Field->getSourceRange(); | ||||||||
12983 | } | ||||||||
12984 | |||||||||
12985 | // Then we append it to the list to check next in order. | ||||||||
12986 | FieldTy = FieldTy.getCanonicalType(); | ||||||||
12987 | if (const auto *FieldRecTy = FieldTy->getAs<RecordType>()) { | ||||||||
12988 | if (llvm::find(RecordTypeList, FieldRecTy) == RecordTypeList.end()) | ||||||||
12989 | RecordTypeList.push_back(FieldRecTy); | ||||||||
12990 | } | ||||||||
12991 | } | ||||||||
12992 | ++NextToCheckIndex; | ||||||||
12993 | } | ||||||||
12994 | } | ||||||||
12995 | |||||||||
12996 | /// Emit an error for the case where a record we are trying to assign to has a | ||||||||
12997 | /// const-qualified field somewhere in its hierarchy. | ||||||||
12998 | static void DiagnoseRecursiveConstFields(Sema &S, const Expr *E, | ||||||||
12999 | SourceLocation Loc) { | ||||||||
13000 | QualType Ty = E->getType(); | ||||||||
13001 | assert(Ty->isRecordType() && "lvalue was not record?")(static_cast <bool> (Ty->isRecordType() && "lvalue was not record?" ) ? void (0) : __assert_fail ("Ty->isRecordType() && \"lvalue was not record?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13001, __extension__ __PRETTY_FUNCTION__)); | ||||||||
13002 | SourceRange Range = E->getSourceRange(); | ||||||||
13003 | const RecordType *RTy = Ty.getCanonicalType()->getAs<RecordType>(); | ||||||||
13004 | bool DiagEmitted = false; | ||||||||
13005 | |||||||||
13006 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) | ||||||||
13007 | DiagnoseRecursiveConstFields(S, ME->getMemberDecl(), RTy, Loc, | ||||||||
13008 | Range, OEK_Member, DiagEmitted); | ||||||||
13009 | else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
13010 | DiagnoseRecursiveConstFields(S, DRE->getDecl(), RTy, Loc, | ||||||||
13011 | Range, OEK_Variable, DiagEmitted); | ||||||||
13012 | else | ||||||||
13013 | DiagnoseRecursiveConstFields(S, nullptr, RTy, Loc, | ||||||||
13014 | Range, OEK_LValue, DiagEmitted); | ||||||||
13015 | if (!DiagEmitted) | ||||||||
13016 | DiagnoseConstAssignment(S, E, Loc); | ||||||||
13017 | } | ||||||||
13018 | |||||||||
13019 | /// CheckForModifiableLvalue - Verify that E is a modifiable lvalue. If not, | ||||||||
13020 | /// emit an error and return true. If so, return false. | ||||||||
13021 | static bool CheckForModifiableLvalue(Expr *E, SourceLocation Loc, Sema &S) { | ||||||||
13022 | assert(!E->hasPlaceholderType(BuiltinType::PseudoObject))(static_cast <bool> (!E->hasPlaceholderType(BuiltinType ::PseudoObject)) ? void (0) : __assert_fail ("!E->hasPlaceholderType(BuiltinType::PseudoObject)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13022, __extension__ __PRETTY_FUNCTION__)); | ||||||||
13023 | |||||||||
13024 | S.CheckShadowingDeclModification(E, Loc); | ||||||||
13025 | |||||||||
13026 | SourceLocation OrigLoc = Loc; | ||||||||
13027 | Expr::isModifiableLvalueResult IsLV = E->isModifiableLvalue(S.Context, | ||||||||
13028 | &Loc); | ||||||||
13029 | if (IsLV == Expr::MLV_ClassTemporary && IsReadonlyMessage(E, S)) | ||||||||
13030 | IsLV = Expr::MLV_InvalidMessageExpression; | ||||||||
13031 | if (IsLV == Expr::MLV_Valid) | ||||||||
13032 | return false; | ||||||||
13033 | |||||||||
13034 | unsigned DiagID = 0; | ||||||||
13035 | bool NeedType = false; | ||||||||
13036 | switch (IsLV) { // C99 6.5.16p2 | ||||||||
13037 | case Expr::MLV_ConstQualified: | ||||||||
13038 | // Use a specialized diagnostic when we're assigning to an object | ||||||||
13039 | // from an enclosing function or block. | ||||||||
13040 | if (NonConstCaptureKind NCCK = isReferenceToNonConstCapture(S, E)) { | ||||||||
13041 | if (NCCK == NCCK_Block) | ||||||||
13042 | DiagID = diag::err_block_decl_ref_not_modifiable_lvalue; | ||||||||
13043 | else | ||||||||
13044 | DiagID = diag::err_lambda_decl_ref_not_modifiable_lvalue; | ||||||||
13045 | break; | ||||||||
13046 | } | ||||||||
13047 | |||||||||
13048 | // In ARC, use some specialized diagnostics for occasions where we | ||||||||
13049 | // infer 'const'. These are always pseudo-strong variables. | ||||||||
13050 | if (S.getLangOpts().ObjCAutoRefCount) { | ||||||||
13051 | DeclRefExpr *declRef = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts()); | ||||||||
13052 | if (declRef && isa<VarDecl>(declRef->getDecl())) { | ||||||||
13053 | VarDecl *var = cast<VarDecl>(declRef->getDecl()); | ||||||||
13054 | |||||||||
13055 | // Use the normal diagnostic if it's pseudo-__strong but the | ||||||||
13056 | // user actually wrote 'const'. | ||||||||
13057 | if (var->isARCPseudoStrong() && | ||||||||
13058 | (!var->getTypeSourceInfo() || | ||||||||
13059 | !var->getTypeSourceInfo()->getType().isConstQualified())) { | ||||||||
13060 | // There are three pseudo-strong cases: | ||||||||
13061 | // - self | ||||||||
13062 | ObjCMethodDecl *method = S.getCurMethodDecl(); | ||||||||
13063 | if (method && var == method->getSelfDecl()) { | ||||||||
13064 | DiagID = method->isClassMethod() | ||||||||
13065 | ? diag::err_typecheck_arc_assign_self_class_method | ||||||||
13066 | : diag::err_typecheck_arc_assign_self; | ||||||||
13067 | |||||||||
13068 | // - Objective-C externally_retained attribute. | ||||||||
13069 | } else if (var->hasAttr<ObjCExternallyRetainedAttr>() || | ||||||||
13070 | isa<ParmVarDecl>(var)) { | ||||||||
13071 | DiagID = diag::err_typecheck_arc_assign_externally_retained; | ||||||||
13072 | |||||||||
13073 | // - fast enumeration variables | ||||||||
13074 | } else { | ||||||||
13075 | DiagID = diag::err_typecheck_arr_assign_enumeration; | ||||||||
13076 | } | ||||||||
13077 | |||||||||
13078 | SourceRange Assign; | ||||||||
13079 | if (Loc != OrigLoc) | ||||||||
13080 | Assign = SourceRange(OrigLoc, OrigLoc); | ||||||||
13081 | S.Diag(Loc, DiagID) << E->getSourceRange() << Assign; | ||||||||
13082 | // We need to preserve the AST regardless, so migration tool | ||||||||
13083 | // can do its job. | ||||||||
13084 | return false; | ||||||||
13085 | } | ||||||||
13086 | } | ||||||||
13087 | } | ||||||||
13088 | |||||||||
13089 | // If none of the special cases above are triggered, then this is a | ||||||||
13090 | // simple const assignment. | ||||||||
13091 | if (DiagID == 0) { | ||||||||
13092 | DiagnoseConstAssignment(S, E, Loc); | ||||||||
13093 | return true; | ||||||||
13094 | } | ||||||||
13095 | |||||||||
13096 | break; | ||||||||
13097 | case Expr::MLV_ConstAddrSpace: | ||||||||
13098 | DiagnoseConstAssignment(S, E, Loc); | ||||||||
13099 | return true; | ||||||||
13100 | case Expr::MLV_ConstQualifiedField: | ||||||||
13101 | DiagnoseRecursiveConstFields(S, E, Loc); | ||||||||
13102 | return true; | ||||||||
13103 | case Expr::MLV_ArrayType: | ||||||||
13104 | case Expr::MLV_ArrayTemporary: | ||||||||
13105 | DiagID = diag::err_typecheck_array_not_modifiable_lvalue; | ||||||||
13106 | NeedType = true; | ||||||||
13107 | break; | ||||||||
13108 | case Expr::MLV_NotObjectType: | ||||||||
13109 | DiagID = diag::err_typecheck_non_object_not_modifiable_lvalue; | ||||||||
13110 | NeedType = true; | ||||||||
13111 | break; | ||||||||
13112 | case Expr::MLV_LValueCast: | ||||||||
13113 | DiagID = diag::err_typecheck_lvalue_casts_not_supported; | ||||||||
13114 | break; | ||||||||
13115 | case Expr::MLV_Valid: | ||||||||
13116 | llvm_unreachable("did not take early return for MLV_Valid")::llvm::llvm_unreachable_internal("did not take early return for MLV_Valid" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13116); | ||||||||
13117 | case Expr::MLV_InvalidExpression: | ||||||||
13118 | case Expr::MLV_MemberFunction: | ||||||||
13119 | case Expr::MLV_ClassTemporary: | ||||||||
13120 | DiagID = diag::err_typecheck_expression_not_modifiable_lvalue; | ||||||||
13121 | break; | ||||||||
13122 | case Expr::MLV_IncompleteType: | ||||||||
13123 | case Expr::MLV_IncompleteVoidType: | ||||||||
13124 | return S.RequireCompleteType(Loc, E->getType(), | ||||||||
13125 | diag::err_typecheck_incomplete_type_not_modifiable_lvalue, E); | ||||||||
13126 | case Expr::MLV_DuplicateVectorComponents: | ||||||||
13127 | DiagID = diag::err_typecheck_duplicate_vector_components_not_mlvalue; | ||||||||
13128 | break; | ||||||||
13129 | case Expr::MLV_NoSetterProperty: | ||||||||
13130 | llvm_unreachable("readonly properties should be processed differently")::llvm::llvm_unreachable_internal("readonly properties should be processed differently" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13130); | ||||||||
13131 | case Expr::MLV_InvalidMessageExpression: | ||||||||
13132 | DiagID = diag::err_readonly_message_assignment; | ||||||||
13133 | break; | ||||||||
13134 | case Expr::MLV_SubObjCPropertySetting: | ||||||||
13135 | DiagID = diag::err_no_subobject_property_setting; | ||||||||
13136 | break; | ||||||||
13137 | } | ||||||||
13138 | |||||||||
13139 | SourceRange Assign; | ||||||||
13140 | if (Loc != OrigLoc) | ||||||||
13141 | Assign = SourceRange(OrigLoc, OrigLoc); | ||||||||
13142 | if (NeedType) | ||||||||
13143 | S.Diag(Loc, DiagID) << E->getType() << E->getSourceRange() << Assign; | ||||||||
13144 | else | ||||||||
13145 | S.Diag(Loc, DiagID) << E->getSourceRange() << Assign; | ||||||||
13146 | return true; | ||||||||
13147 | } | ||||||||
13148 | |||||||||
13149 | static void CheckIdentityFieldAssignment(Expr *LHSExpr, Expr *RHSExpr, | ||||||||
13150 | SourceLocation Loc, | ||||||||
13151 | Sema &Sema) { | ||||||||
13152 | if (Sema.inTemplateInstantiation()) | ||||||||
13153 | return; | ||||||||
13154 | if (Sema.isUnevaluatedContext()) | ||||||||
13155 | return; | ||||||||
13156 | if (Loc.isInvalid() || Loc.isMacroID()) | ||||||||
13157 | return; | ||||||||
13158 | if (LHSExpr->getExprLoc().isMacroID() || RHSExpr->getExprLoc().isMacroID()) | ||||||||
13159 | return; | ||||||||
13160 | |||||||||
13161 | // C / C++ fields | ||||||||
13162 | MemberExpr *ML = dyn_cast<MemberExpr>(LHSExpr); | ||||||||
13163 | MemberExpr *MR = dyn_cast<MemberExpr>(RHSExpr); | ||||||||
13164 | if (ML && MR) { | ||||||||
13165 | if (!(isa<CXXThisExpr>(ML->getBase()) && isa<CXXThisExpr>(MR->getBase()))) | ||||||||
13166 | return; | ||||||||
13167 | const ValueDecl *LHSDecl = | ||||||||
13168 | cast<ValueDecl>(ML->getMemberDecl()->getCanonicalDecl()); | ||||||||
13169 | const ValueDecl *RHSDecl = | ||||||||
13170 | cast<ValueDecl>(MR->getMemberDecl()->getCanonicalDecl()); | ||||||||
13171 | if (LHSDecl != RHSDecl) | ||||||||
13172 | return; | ||||||||
13173 | if (LHSDecl->getType().isVolatileQualified()) | ||||||||
13174 | return; | ||||||||
13175 | if (const ReferenceType *RefTy = LHSDecl->getType()->getAs<ReferenceType>()) | ||||||||
13176 | if (RefTy->getPointeeType().isVolatileQualified()) | ||||||||
13177 | return; | ||||||||
13178 | |||||||||
13179 | Sema.Diag(Loc, diag::warn_identity_field_assign) << 0; | ||||||||
13180 | } | ||||||||
13181 | |||||||||
13182 | // Objective-C instance variables | ||||||||
13183 | ObjCIvarRefExpr *OL = dyn_cast<ObjCIvarRefExpr>(LHSExpr); | ||||||||
13184 | ObjCIvarRefExpr *OR = dyn_cast<ObjCIvarRefExpr>(RHSExpr); | ||||||||
13185 | if (OL && OR && OL->getDecl() == OR->getDecl()) { | ||||||||
13186 | DeclRefExpr *RL = dyn_cast<DeclRefExpr>(OL->getBase()->IgnoreImpCasts()); | ||||||||
13187 | DeclRefExpr *RR = dyn_cast<DeclRefExpr>(OR->getBase()->IgnoreImpCasts()); | ||||||||
13188 | if (RL && RR && RL->getDecl() == RR->getDecl()) | ||||||||
13189 | Sema.Diag(Loc, diag::warn_identity_field_assign) << 1; | ||||||||
13190 | } | ||||||||
13191 | } | ||||||||
13192 | |||||||||
13193 | // C99 6.5.16.1 | ||||||||
13194 | QualType Sema::CheckAssignmentOperands(Expr *LHSExpr, ExprResult &RHS, | ||||||||
13195 | SourceLocation Loc, | ||||||||
13196 | QualType CompoundType) { | ||||||||
13197 | assert(!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject))(static_cast <bool> (!LHSExpr->hasPlaceholderType(BuiltinType ::PseudoObject)) ? void (0) : __assert_fail ("!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13197, __extension__ __PRETTY_FUNCTION__)); | ||||||||
13198 | |||||||||
13199 | // Verify that LHS is a modifiable lvalue, and emit error if not. | ||||||||
13200 | if (CheckForModifiableLvalue(LHSExpr, Loc, *this)) | ||||||||
13201 | return QualType(); | ||||||||
13202 | |||||||||
13203 | QualType LHSType = LHSExpr->getType(); | ||||||||
13204 | QualType RHSType = CompoundType.isNull() ? RHS.get()->getType() : | ||||||||
13205 | CompoundType; | ||||||||
13206 | // OpenCL v1.2 s6.1.1.1 p2: | ||||||||
13207 | // The half data type can only be used to declare a pointer to a buffer that | ||||||||
13208 | // contains half values | ||||||||
13209 | if (getLangOpts().OpenCL && | ||||||||
13210 | !getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()) && | ||||||||
13211 | LHSType->isHalfType()) { | ||||||||
13212 | Diag(Loc, diag::err_opencl_half_load_store) << 1 | ||||||||
13213 | << LHSType.getUnqualifiedType(); | ||||||||
13214 | return QualType(); | ||||||||
13215 | } | ||||||||
13216 | |||||||||
13217 | AssignConvertType ConvTy; | ||||||||
13218 | if (CompoundType.isNull()) { | ||||||||
13219 | Expr *RHSCheck = RHS.get(); | ||||||||
13220 | |||||||||
13221 | CheckIdentityFieldAssignment(LHSExpr, RHSCheck, Loc, *this); | ||||||||
13222 | |||||||||
13223 | QualType LHSTy(LHSType); | ||||||||
13224 | ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); | ||||||||
13225 | if (RHS.isInvalid()) | ||||||||
13226 | return QualType(); | ||||||||
13227 | // Special case of NSObject attributes on c-style pointer types. | ||||||||
13228 | if (ConvTy == IncompatiblePointer && | ||||||||
13229 | ((Context.isObjCNSObjectType(LHSType) && | ||||||||
13230 | RHSType->isObjCObjectPointerType()) || | ||||||||
13231 | (Context.isObjCNSObjectType(RHSType) && | ||||||||
13232 | LHSType->isObjCObjectPointerType()))) | ||||||||
13233 | ConvTy = Compatible; | ||||||||
13234 | |||||||||
13235 | if (ConvTy == Compatible && | ||||||||
13236 | LHSType->isObjCObjectType()) | ||||||||
13237 | Diag(Loc, diag::err_objc_object_assignment) | ||||||||
13238 | << LHSType; | ||||||||
13239 | |||||||||
13240 | // If the RHS is a unary plus or minus, check to see if they = and + are | ||||||||
13241 | // right next to each other. If so, the user may have typo'd "x =+ 4" | ||||||||
13242 | // instead of "x += 4". | ||||||||
13243 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(RHSCheck)) | ||||||||
13244 | RHSCheck = ICE->getSubExpr(); | ||||||||
13245 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(RHSCheck)) { | ||||||||
13246 | if ((UO->getOpcode() == UO_Plus || UO->getOpcode() == UO_Minus) && | ||||||||
13247 | Loc.isFileID() && UO->getOperatorLoc().isFileID() && | ||||||||
13248 | // Only if the two operators are exactly adjacent. | ||||||||
13249 | Loc.getLocWithOffset(1) == UO->getOperatorLoc() && | ||||||||
13250 | // And there is a space or other character before the subexpr of the | ||||||||
13251 | // unary +/-. We don't want to warn on "x=-1". | ||||||||
13252 | Loc.getLocWithOffset(2) != UO->getSubExpr()->getBeginLoc() && | ||||||||
13253 | UO->getSubExpr()->getBeginLoc().isFileID()) { | ||||||||
13254 | Diag(Loc, diag::warn_not_compound_assign) | ||||||||
13255 | << (UO->getOpcode() == UO_Plus ? "+" : "-") | ||||||||
13256 | << SourceRange(UO->getOperatorLoc(), UO->getOperatorLoc()); | ||||||||
13257 | } | ||||||||
13258 | } | ||||||||
13259 | |||||||||
13260 | if (ConvTy == Compatible) { | ||||||||
13261 | if (LHSType.getObjCLifetime() == Qualifiers::OCL_Strong) { | ||||||||
13262 | // Warn about retain cycles where a block captures the LHS, but | ||||||||
13263 | // not if the LHS is a simple variable into which the block is | ||||||||
13264 | // being stored...unless that variable can be captured by reference! | ||||||||
13265 | const Expr *InnerLHS = LHSExpr->IgnoreParenCasts(); | ||||||||
13266 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(InnerLHS); | ||||||||
13267 | if (!DRE || DRE->getDecl()->hasAttr<BlocksAttr>()) | ||||||||
13268 | checkRetainCycles(LHSExpr, RHS.get()); | ||||||||
13269 | } | ||||||||
13270 | |||||||||
13271 | if (LHSType.getObjCLifetime() == Qualifiers::OCL_Strong || | ||||||||
13272 | LHSType.isNonWeakInMRRWithObjCWeak(Context)) { | ||||||||
13273 | // It is safe to assign a weak reference into a strong variable. | ||||||||
13274 | // Although this code can still have problems: | ||||||||
13275 | // id x = self.weakProp; | ||||||||
13276 | // id y = self.weakProp; | ||||||||
13277 | // we do not warn to warn spuriously when 'x' and 'y' are on separate | ||||||||
13278 | // paths through the function. This should be revisited if | ||||||||
13279 | // -Wrepeated-use-of-weak is made flow-sensitive. | ||||||||
13280 | // For ObjCWeak only, we do not warn if the assign is to a non-weak | ||||||||
13281 | // variable, which will be valid for the current autorelease scope. | ||||||||
13282 | if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, | ||||||||
13283 | RHS.get()->getBeginLoc())) | ||||||||
13284 | getCurFunction()->markSafeWeakUse(RHS.get()); | ||||||||
13285 | |||||||||
13286 | } else if (getLangOpts().ObjCAutoRefCount || getLangOpts().ObjCWeak) { | ||||||||
13287 | checkUnsafeExprAssigns(Loc, LHSExpr, RHS.get()); | ||||||||
13288 | } | ||||||||
13289 | } | ||||||||
13290 | } else { | ||||||||
13291 | // Compound assignment "x += y" | ||||||||
13292 | ConvTy = CheckAssignmentConstraints(Loc, LHSType, RHSType); | ||||||||
13293 | } | ||||||||
13294 | |||||||||
13295 | if (DiagnoseAssignmentResult(ConvTy, Loc, LHSType, RHSType, | ||||||||
13296 | RHS.get(), AA_Assigning)) | ||||||||
13297 | return QualType(); | ||||||||
13298 | |||||||||
13299 | CheckForNullPointerDereference(*this, LHSExpr); | ||||||||
13300 | |||||||||
13301 | if (getLangOpts().CPlusPlus20 && LHSType.isVolatileQualified()) { | ||||||||
13302 | if (CompoundType.isNull()) { | ||||||||
13303 | // C++2a [expr.ass]p5: | ||||||||
13304 | // A simple-assignment whose left operand is of a volatile-qualified | ||||||||
13305 | // type is deprecated unless the assignment is either a discarded-value | ||||||||
13306 | // expression or an unevaluated operand | ||||||||
13307 | ExprEvalContexts.back().VolatileAssignmentLHSs.push_back(LHSExpr); | ||||||||
13308 | } else { | ||||||||
13309 | // C++2a [expr.ass]p6: | ||||||||
13310 | // [Compound-assignment] expressions are deprecated if E1 has | ||||||||
13311 | // volatile-qualified type | ||||||||
13312 | Diag(Loc, diag::warn_deprecated_compound_assign_volatile) << LHSType; | ||||||||
13313 | } | ||||||||
13314 | } | ||||||||
13315 | |||||||||
13316 | // C99 6.5.16p3: The type of an assignment expression is the type of the | ||||||||
13317 | // left operand unless the left operand has qualified type, in which case | ||||||||
13318 | // it is the unqualified version of the type of the left operand. | ||||||||
13319 | // C99 6.5.16.1p2: In simple assignment, the value of the right operand | ||||||||
13320 | // is converted to the type of the assignment expression (above). | ||||||||
13321 | // C++ 5.17p1: the type of the assignment expression is that of its left | ||||||||
13322 | // operand. | ||||||||
13323 | return (getLangOpts().CPlusPlus | ||||||||
13324 | ? LHSType : LHSType.getUnqualifiedType()); | ||||||||
13325 | } | ||||||||
13326 | |||||||||
13327 | // Only ignore explicit casts to void. | ||||||||
13328 | static bool IgnoreCommaOperand(const Expr *E) { | ||||||||
13329 | E = E->IgnoreParens(); | ||||||||
13330 | |||||||||
13331 | if (const CastExpr *CE = dyn_cast<CastExpr>(E)) { | ||||||||
13332 | if (CE->getCastKind() == CK_ToVoid) { | ||||||||
13333 | return true; | ||||||||
13334 | } | ||||||||
13335 | |||||||||
13336 | // static_cast<void> on a dependent type will not show up as CK_ToVoid. | ||||||||
13337 | if (CE->getCastKind() == CK_Dependent && E->getType()->isVoidType() && | ||||||||
13338 | CE->getSubExpr()->getType()->isDependentType()) { | ||||||||
13339 | return true; | ||||||||
13340 | } | ||||||||
13341 | } | ||||||||
13342 | |||||||||
13343 | return false; | ||||||||
13344 | } | ||||||||
13345 | |||||||||
13346 | // Look for instances where it is likely the comma operator is confused with | ||||||||
13347 | // another operator. There is an explicit list of acceptable expressions for | ||||||||
13348 | // the left hand side of the comma operator, otherwise emit a warning. | ||||||||
13349 | void Sema::DiagnoseCommaOperator(const Expr *LHS, SourceLocation Loc) { | ||||||||
13350 | // No warnings in macros | ||||||||
13351 | if (Loc.isMacroID()) | ||||||||
13352 | return; | ||||||||
13353 | |||||||||
13354 | // Don't warn in template instantiations. | ||||||||
13355 | if (inTemplateInstantiation()) | ||||||||
13356 | return; | ||||||||
13357 | |||||||||
13358 | // Scope isn't fine-grained enough to explicitly list the specific cases, so | ||||||||
13359 | // instead, skip more than needed, then call back into here with the | ||||||||
13360 | // CommaVisitor in SemaStmt.cpp. | ||||||||
13361 | // The listed locations are the initialization and increment portions | ||||||||
13362 | // of a for loop. The additional checks are on the condition of | ||||||||
13363 | // if statements, do/while loops, and for loops. | ||||||||
13364 | // Differences in scope flags for C89 mode requires the extra logic. | ||||||||
13365 | const unsigned ForIncrementFlags = | ||||||||
13366 | getLangOpts().C99 || getLangOpts().CPlusPlus | ||||||||
13367 | ? Scope::ControlScope | Scope::ContinueScope | Scope::BreakScope | ||||||||
13368 | : Scope::ContinueScope | Scope::BreakScope; | ||||||||
13369 | const unsigned ForInitFlags = Scope::ControlScope | Scope::DeclScope; | ||||||||
13370 | const unsigned ScopeFlags = getCurScope()->getFlags(); | ||||||||
13371 | if ((ScopeFlags & ForIncrementFlags) == ForIncrementFlags || | ||||||||
13372 | (ScopeFlags & ForInitFlags) == ForInitFlags) | ||||||||
13373 | return; | ||||||||
13374 | |||||||||
13375 | // If there are multiple comma operators used together, get the RHS of the | ||||||||
13376 | // of the comma operator as the LHS. | ||||||||
13377 | while (const BinaryOperator *BO = dyn_cast<BinaryOperator>(LHS)) { | ||||||||
13378 | if (BO->getOpcode() != BO_Comma) | ||||||||
13379 | break; | ||||||||
13380 | LHS = BO->getRHS(); | ||||||||
13381 | } | ||||||||
13382 | |||||||||
13383 | // Only allow some expressions on LHS to not warn. | ||||||||
13384 | if (IgnoreCommaOperand(LHS)) | ||||||||
13385 | return; | ||||||||
13386 | |||||||||
13387 | Diag(Loc, diag::warn_comma_operator); | ||||||||
13388 | Diag(LHS->getBeginLoc(), diag::note_cast_to_void) | ||||||||
13389 | << LHS->getSourceRange() | ||||||||
13390 | << FixItHint::CreateInsertion(LHS->getBeginLoc(), | ||||||||
13391 | LangOpts.CPlusPlus ? "static_cast<void>(" | ||||||||
13392 | : "(void)(") | ||||||||
13393 | << FixItHint::CreateInsertion(PP.getLocForEndOfToken(LHS->getEndLoc()), | ||||||||
13394 | ")"); | ||||||||
13395 | } | ||||||||
13396 | |||||||||
13397 | // C99 6.5.17 | ||||||||
13398 | static QualType CheckCommaOperands(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
13399 | SourceLocation Loc) { | ||||||||
13400 | LHS = S.CheckPlaceholderExpr(LHS.get()); | ||||||||
13401 | RHS = S.CheckPlaceholderExpr(RHS.get()); | ||||||||
13402 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
13403 | return QualType(); | ||||||||
13404 | |||||||||
13405 | // C's comma performs lvalue conversion (C99 6.3.2.1) on both its | ||||||||
13406 | // operands, but not unary promotions. | ||||||||
13407 | // C++'s comma does not do any conversions at all (C++ [expr.comma]p1). | ||||||||
13408 | |||||||||
13409 | // So we treat the LHS as a ignored value, and in C++ we allow the | ||||||||
13410 | // containing site to determine what should be done with the RHS. | ||||||||
13411 | LHS = S.IgnoredValueConversions(LHS.get()); | ||||||||
13412 | if (LHS.isInvalid()) | ||||||||
13413 | return QualType(); | ||||||||
13414 | |||||||||
13415 | S.DiagnoseUnusedExprResult(LHS.get()); | ||||||||
13416 | |||||||||
13417 | if (!S.getLangOpts().CPlusPlus) { | ||||||||
13418 | RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
13419 | if (RHS.isInvalid()) | ||||||||
13420 | return QualType(); | ||||||||
13421 | if (!RHS.get()->getType()->isVoidType()) | ||||||||
13422 | S.RequireCompleteType(Loc, RHS.get()->getType(), | ||||||||
13423 | diag::err_incomplete_type); | ||||||||
13424 | } | ||||||||
13425 | |||||||||
13426 | if (!S.getDiagnostics().isIgnored(diag::warn_comma_operator, Loc)) | ||||||||
13427 | S.DiagnoseCommaOperator(LHS.get(), Loc); | ||||||||
13428 | |||||||||
13429 | return RHS.get()->getType(); | ||||||||
13430 | } | ||||||||
13431 | |||||||||
13432 | /// CheckIncrementDecrementOperand - unlike most "Check" methods, this routine | ||||||||
13433 | /// doesn't need to call UsualUnaryConversions or UsualArithmeticConversions. | ||||||||
13434 | static QualType CheckIncrementDecrementOperand(Sema &S, Expr *Op, | ||||||||
13435 | ExprValueKind &VK, | ||||||||
13436 | ExprObjectKind &OK, | ||||||||
13437 | SourceLocation OpLoc, | ||||||||
13438 | bool IsInc, bool IsPrefix) { | ||||||||
13439 | if (Op->isTypeDependent()) | ||||||||
13440 | return S.Context.DependentTy; | ||||||||
13441 | |||||||||
13442 | QualType ResType = Op->getType(); | ||||||||
13443 | // Atomic types can be used for increment / decrement where the non-atomic | ||||||||
13444 | // versions can, so ignore the _Atomic() specifier for the purpose of | ||||||||
13445 | // checking. | ||||||||
13446 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||||||
13447 | ResType = ResAtomicType->getValueType(); | ||||||||
13448 | |||||||||
13449 | assert(!ResType.isNull() && "no type for increment/decrement expression")(static_cast <bool> (!ResType.isNull() && "no type for increment/decrement expression" ) ? void (0) : __assert_fail ("!ResType.isNull() && \"no type for increment/decrement expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13449, __extension__ __PRETTY_FUNCTION__)); | ||||||||
13450 | |||||||||
13451 | if (S.getLangOpts().CPlusPlus && ResType->isBooleanType()) { | ||||||||
13452 | // Decrement of bool is not allowed. | ||||||||
13453 | if (!IsInc) { | ||||||||
13454 | S.Diag(OpLoc, diag::err_decrement_bool) << Op->getSourceRange(); | ||||||||
13455 | return QualType(); | ||||||||
13456 | } | ||||||||
13457 | // Increment of bool sets it to true, but is deprecated. | ||||||||
13458 | S.Diag(OpLoc, S.getLangOpts().CPlusPlus17 ? diag::ext_increment_bool | ||||||||
13459 | : diag::warn_increment_bool) | ||||||||
13460 | << Op->getSourceRange(); | ||||||||
13461 | } else if (S.getLangOpts().CPlusPlus && ResType->isEnumeralType()) { | ||||||||
13462 | // Error on enum increments and decrements in C++ mode | ||||||||
13463 | S.Diag(OpLoc, diag::err_increment_decrement_enum) << IsInc << ResType; | ||||||||
13464 | return QualType(); | ||||||||
13465 | } else if (ResType->isRealType()) { | ||||||||
13466 | // OK! | ||||||||
13467 | } else if (ResType->isPointerType()) { | ||||||||
13468 | // C99 6.5.2.4p2, 6.5.6p2 | ||||||||
13469 | if (!checkArithmeticOpPointerOperand(S, OpLoc, Op)) | ||||||||
13470 | return QualType(); | ||||||||
13471 | } else if (ResType->isObjCObjectPointerType()) { | ||||||||
13472 | // On modern runtimes, ObjC pointer arithmetic is forbidden. | ||||||||
13473 | // Otherwise, we just need a complete type. | ||||||||
13474 | if (checkArithmeticIncompletePointerType(S, OpLoc, Op) || | ||||||||
13475 | checkArithmeticOnObjCPointer(S, OpLoc, Op)) | ||||||||
13476 | return QualType(); | ||||||||
13477 | } else if (ResType->isAnyComplexType()) { | ||||||||
13478 | // C99 does not support ++/-- on complex types, we allow as an extension. | ||||||||
13479 | S.Diag(OpLoc, diag::ext_integer_increment_complex) | ||||||||
13480 | << ResType << Op->getSourceRange(); | ||||||||
13481 | } else if (ResType->isPlaceholderType()) { | ||||||||
13482 | ExprResult PR = S.CheckPlaceholderExpr(Op); | ||||||||
13483 | if (PR.isInvalid()) return QualType(); | ||||||||
13484 | return CheckIncrementDecrementOperand(S, PR.get(), VK, OK, OpLoc, | ||||||||
13485 | IsInc, IsPrefix); | ||||||||
13486 | } else if (S.getLangOpts().AltiVec && ResType->isVectorType()) { | ||||||||
13487 | // OK! ( C/C++ Language Extensions for CBEA(Version 2.6) 10.3 ) | ||||||||
13488 | } else if (S.getLangOpts().ZVector && ResType->isVectorType() && | ||||||||
13489 | (ResType->castAs<VectorType>()->getVectorKind() != | ||||||||
13490 | VectorType::AltiVecBool)) { | ||||||||
13491 | // The z vector extensions allow ++ and -- for non-bool vectors. | ||||||||
13492 | } else if(S.getLangOpts().OpenCL && ResType->isVectorType() && | ||||||||
13493 | ResType->castAs<VectorType>()->getElementType()->isIntegerType()) { | ||||||||
13494 | // OpenCL V1.2 6.3 says dec/inc ops operate on integer vector types. | ||||||||
13495 | } else { | ||||||||
13496 | S.Diag(OpLoc, diag::err_typecheck_illegal_increment_decrement) | ||||||||
13497 | << ResType << int(IsInc) << Op->getSourceRange(); | ||||||||
13498 | return QualType(); | ||||||||
13499 | } | ||||||||
13500 | // At this point, we know we have a real, complex or pointer type. | ||||||||
13501 | // Now make sure the operand is a modifiable lvalue. | ||||||||
13502 | if (CheckForModifiableLvalue(Op, OpLoc, S)) | ||||||||
13503 | return QualType(); | ||||||||
13504 | if (S.getLangOpts().CPlusPlus20 && ResType.isVolatileQualified()) { | ||||||||
13505 | // C++2a [expr.pre.inc]p1, [expr.post.inc]p1: | ||||||||
13506 | // An operand with volatile-qualified type is deprecated | ||||||||
13507 | S.Diag(OpLoc, diag::warn_deprecated_increment_decrement_volatile) | ||||||||
13508 | << IsInc << ResType; | ||||||||
13509 | } | ||||||||
13510 | // In C++, a prefix increment is the same type as the operand. Otherwise | ||||||||
13511 | // (in C or with postfix), the increment is the unqualified type of the | ||||||||
13512 | // operand. | ||||||||
13513 | if (IsPrefix && S.getLangOpts().CPlusPlus) { | ||||||||
13514 | VK = VK_LValue; | ||||||||
13515 | OK = Op->getObjectKind(); | ||||||||
13516 | return ResType; | ||||||||
13517 | } else { | ||||||||
13518 | VK = VK_PRValue; | ||||||||
13519 | return ResType.getUnqualifiedType(); | ||||||||
13520 | } | ||||||||
13521 | } | ||||||||
13522 | |||||||||
13523 | |||||||||
13524 | /// getPrimaryDecl - Helper function for CheckAddressOfOperand(). | ||||||||
13525 | /// This routine allows us to typecheck complex/recursive expressions | ||||||||
13526 | /// where the declaration is needed for type checking. We only need to | ||||||||
13527 | /// handle cases when the expression references a function designator | ||||||||
13528 | /// or is an lvalue. Here are some examples: | ||||||||
13529 | /// - &(x) => x | ||||||||
13530 | /// - &*****f => f for f a function designator. | ||||||||
13531 | /// - &s.xx => s | ||||||||
13532 | /// - &s.zz[1].yy -> s, if zz is an array | ||||||||
13533 | /// - *(x + 1) -> x, if x is an array | ||||||||
13534 | /// - &"123"[2] -> 0 | ||||||||
13535 | /// - & __real__ x -> x | ||||||||
13536 | /// | ||||||||
13537 | /// FIXME: We don't recurse to the RHS of a comma, nor handle pointers to | ||||||||
13538 | /// members. | ||||||||
13539 | static ValueDecl *getPrimaryDecl(Expr *E) { | ||||||||
13540 | switch (E->getStmtClass()) { | ||||||||
13541 | case Stmt::DeclRefExprClass: | ||||||||
13542 | return cast<DeclRefExpr>(E)->getDecl(); | ||||||||
13543 | case Stmt::MemberExprClass: | ||||||||
13544 | // If this is an arrow operator, the address is an offset from | ||||||||
13545 | // the base's value, so the object the base refers to is | ||||||||
13546 | // irrelevant. | ||||||||
13547 | if (cast<MemberExpr>(E)->isArrow()) | ||||||||
13548 | return nullptr; | ||||||||
13549 | // Otherwise, the expression refers to a part of the base | ||||||||
13550 | return getPrimaryDecl(cast<MemberExpr>(E)->getBase()); | ||||||||
13551 | case Stmt::ArraySubscriptExprClass: { | ||||||||
13552 | // FIXME: This code shouldn't be necessary! We should catch the implicit | ||||||||
13553 | // promotion of register arrays earlier. | ||||||||
13554 | Expr* Base = cast<ArraySubscriptExpr>(E)->getBase(); | ||||||||
13555 | if (ImplicitCastExpr* ICE = dyn_cast<ImplicitCastExpr>(Base)) { | ||||||||
13556 | if (ICE->getSubExpr()->getType()->isArrayType()) | ||||||||
13557 | return getPrimaryDecl(ICE->getSubExpr()); | ||||||||
13558 | } | ||||||||
13559 | return nullptr; | ||||||||
13560 | } | ||||||||
13561 | case Stmt::UnaryOperatorClass: { | ||||||||
13562 | UnaryOperator *UO = cast<UnaryOperator>(E); | ||||||||
13563 | |||||||||
13564 | switch(UO->getOpcode()) { | ||||||||
13565 | case UO_Real: | ||||||||
13566 | case UO_Imag: | ||||||||
13567 | case UO_Extension: | ||||||||
13568 | return getPrimaryDecl(UO->getSubExpr()); | ||||||||
13569 | default: | ||||||||
13570 | return nullptr; | ||||||||
13571 | } | ||||||||
13572 | } | ||||||||
13573 | case Stmt::ParenExprClass: | ||||||||
13574 | return getPrimaryDecl(cast<ParenExpr>(E)->getSubExpr()); | ||||||||
13575 | case Stmt::ImplicitCastExprClass: | ||||||||
13576 | // If the result of an implicit cast is an l-value, we care about | ||||||||
13577 | // the sub-expression; otherwise, the result here doesn't matter. | ||||||||
13578 | return getPrimaryDecl(cast<ImplicitCastExpr>(E)->getSubExpr()); | ||||||||
13579 | case Stmt::CXXUuidofExprClass: | ||||||||
13580 | return cast<CXXUuidofExpr>(E)->getGuidDecl(); | ||||||||
13581 | default: | ||||||||
13582 | return nullptr; | ||||||||
13583 | } | ||||||||
13584 | } | ||||||||
13585 | |||||||||
13586 | namespace { | ||||||||
13587 | enum { | ||||||||
13588 | AO_Bit_Field = 0, | ||||||||
13589 | AO_Vector_Element = 1, | ||||||||
13590 | AO_Property_Expansion = 2, | ||||||||
13591 | AO_Register_Variable = 3, | ||||||||
13592 | AO_Matrix_Element = 4, | ||||||||
13593 | AO_No_Error = 5 | ||||||||
13594 | }; | ||||||||
13595 | } | ||||||||
13596 | /// Diagnose invalid operand for address of operations. | ||||||||
13597 | /// | ||||||||
13598 | /// \param Type The type of operand which cannot have its address taken. | ||||||||
13599 | static void diagnoseAddressOfInvalidType(Sema &S, SourceLocation Loc, | ||||||||
13600 | Expr *E, unsigned Type) { | ||||||||
13601 | S.Diag(Loc, diag::err_typecheck_address_of) << Type << E->getSourceRange(); | ||||||||
13602 | } | ||||||||
13603 | |||||||||
13604 | /// CheckAddressOfOperand - The operand of & must be either a function | ||||||||
13605 | /// designator or an lvalue designating an object. If it is an lvalue, the | ||||||||
13606 | /// object cannot be declared with storage class register or be a bit field. | ||||||||
13607 | /// Note: The usual conversions are *not* applied to the operand of the & | ||||||||
13608 | /// operator (C99 6.3.2.1p[2-4]), and its result is never an lvalue. | ||||||||
13609 | /// In C++, the operand might be an overloaded function name, in which case | ||||||||
13610 | /// we allow the '&' but retain the overloaded-function type. | ||||||||
13611 | QualType Sema::CheckAddressOfOperand(ExprResult &OrigOp, SourceLocation OpLoc) { | ||||||||
13612 | if (const BuiltinType *PTy = OrigOp.get()->getType()->getAsPlaceholderType()){ | ||||||||
13613 | if (PTy->getKind() == BuiltinType::Overload) { | ||||||||
13614 | Expr *E = OrigOp.get()->IgnoreParens(); | ||||||||
13615 | if (!isa<OverloadExpr>(E)) { | ||||||||
13616 | assert(cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf)(static_cast <bool> (cast<UnaryOperator>(E)->getOpcode () == UO_AddrOf) ? void (0) : __assert_fail ("cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13616, __extension__ __PRETTY_FUNCTION__)); | ||||||||
13617 | Diag(OpLoc, diag::err_typecheck_invalid_lvalue_addrof_addrof_function) | ||||||||
13618 | << OrigOp.get()->getSourceRange(); | ||||||||
13619 | return QualType(); | ||||||||
13620 | } | ||||||||
13621 | |||||||||
13622 | OverloadExpr *Ovl = cast<OverloadExpr>(E); | ||||||||
13623 | if (isa<UnresolvedMemberExpr>(Ovl)) | ||||||||
13624 | if (!ResolveSingleFunctionTemplateSpecialization(Ovl)) { | ||||||||
13625 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||||||
13626 | << OrigOp.get()->getSourceRange(); | ||||||||
13627 | return QualType(); | ||||||||
13628 | } | ||||||||
13629 | |||||||||
13630 | return Context.OverloadTy; | ||||||||
13631 | } | ||||||||
13632 | |||||||||
13633 | if (PTy->getKind() == BuiltinType::UnknownAny) | ||||||||
13634 | return Context.UnknownAnyTy; | ||||||||
13635 | |||||||||
13636 | if (PTy->getKind() == BuiltinType::BoundMember) { | ||||||||
13637 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||||||
13638 | << OrigOp.get()->getSourceRange(); | ||||||||
13639 | return QualType(); | ||||||||
13640 | } | ||||||||
13641 | |||||||||
13642 | OrigOp = CheckPlaceholderExpr(OrigOp.get()); | ||||||||
13643 | if (OrigOp.isInvalid()) return QualType(); | ||||||||
13644 | } | ||||||||
13645 | |||||||||
13646 | if (OrigOp.get()->isTypeDependent()) | ||||||||
13647 | return Context.DependentTy; | ||||||||
13648 | |||||||||
13649 | assert(!OrigOp.get()->getType()->isPlaceholderType())(static_cast <bool> (!OrigOp.get()->getType()->isPlaceholderType ()) ? void (0) : __assert_fail ("!OrigOp.get()->getType()->isPlaceholderType()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13649, __extension__ __PRETTY_FUNCTION__)); | ||||||||
13650 | |||||||||
13651 | // Make sure to ignore parentheses in subsequent checks | ||||||||
13652 | Expr *op = OrigOp.get()->IgnoreParens(); | ||||||||
13653 | |||||||||
13654 | // In OpenCL captures for blocks called as lambda functions | ||||||||
13655 | // are located in the private address space. Blocks used in | ||||||||
13656 | // enqueue_kernel can be located in a different address space | ||||||||
13657 | // depending on a vendor implementation. Thus preventing | ||||||||
13658 | // taking an address of the capture to avoid invalid AS casts. | ||||||||
13659 | if (LangOpts.OpenCL) { | ||||||||
13660 | auto* VarRef = dyn_cast<DeclRefExpr>(op); | ||||||||
13661 | if (VarRef && VarRef->refersToEnclosingVariableOrCapture()) { | ||||||||
13662 | Diag(op->getExprLoc(), diag::err_opencl_taking_address_capture); | ||||||||
13663 | return QualType(); | ||||||||
13664 | } | ||||||||
13665 | } | ||||||||
13666 | |||||||||
13667 | if (getLangOpts().C99) { | ||||||||
13668 | // Implement C99-only parts of addressof rules. | ||||||||
13669 | if (UnaryOperator* uOp = dyn_cast<UnaryOperator>(op)) { | ||||||||
13670 | if (uOp->getOpcode() == UO_Deref) | ||||||||
13671 | // Per C99 6.5.3.2, the address of a deref always returns a valid result | ||||||||
13672 | // (assuming the deref expression is valid). | ||||||||
13673 | return uOp->getSubExpr()->getType(); | ||||||||
13674 | } | ||||||||
13675 | // Technically, there should be a check for array subscript | ||||||||
13676 | // expressions here, but the result of one is always an lvalue anyway. | ||||||||
13677 | } | ||||||||
13678 | ValueDecl *dcl = getPrimaryDecl(op); | ||||||||
13679 | |||||||||
13680 | if (auto *FD = dyn_cast_or_null<FunctionDecl>(dcl)) | ||||||||
13681 | if (!checkAddressOfFunctionIsAvailable(FD, /*Complain=*/true, | ||||||||
13682 | op->getBeginLoc())) | ||||||||
13683 | return QualType(); | ||||||||
13684 | |||||||||
13685 | Expr::LValueClassification lval = op->ClassifyLValue(Context); | ||||||||
13686 | unsigned AddressOfError = AO_No_Error; | ||||||||
13687 | |||||||||
13688 | if (lval == Expr::LV_ClassTemporary || lval == Expr::LV_ArrayTemporary) { | ||||||||
13689 | bool sfinae = (bool)isSFINAEContext(); | ||||||||
13690 | Diag(OpLoc, isSFINAEContext() ? diag::err_typecheck_addrof_temporary | ||||||||
13691 | : diag::ext_typecheck_addrof_temporary) | ||||||||
13692 | << op->getType() << op->getSourceRange(); | ||||||||
13693 | if (sfinae) | ||||||||
13694 | return QualType(); | ||||||||
13695 | // Materialize the temporary as an lvalue so that we can take its address. | ||||||||
13696 | OrigOp = op = | ||||||||
13697 | CreateMaterializeTemporaryExpr(op->getType(), OrigOp.get(), true); | ||||||||
13698 | } else if (isa<ObjCSelectorExpr>(op)) { | ||||||||
13699 | return Context.getPointerType(op->getType()); | ||||||||
13700 | } else if (lval == Expr::LV_MemberFunction) { | ||||||||
13701 | // If it's an instance method, make a member pointer. | ||||||||
13702 | // The expression must have exactly the form &A::foo. | ||||||||
13703 | |||||||||
13704 | // If the underlying expression isn't a decl ref, give up. | ||||||||
13705 | if (!isa<DeclRefExpr>(op)) { | ||||||||
13706 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||||||
13707 | << OrigOp.get()->getSourceRange(); | ||||||||
13708 | return QualType(); | ||||||||
13709 | } | ||||||||
13710 | DeclRefExpr *DRE = cast<DeclRefExpr>(op); | ||||||||
13711 | CXXMethodDecl *MD = cast<CXXMethodDecl>(DRE->getDecl()); | ||||||||
13712 | |||||||||
13713 | // The id-expression was parenthesized. | ||||||||
13714 | if (OrigOp.get() != DRE) { | ||||||||
13715 | Diag(OpLoc, diag::err_parens_pointer_member_function) | ||||||||
13716 | << OrigOp.get()->getSourceRange(); | ||||||||
13717 | |||||||||
13718 | // The method was named without a qualifier. | ||||||||
13719 | } else if (!DRE->getQualifier()) { | ||||||||
13720 | if (MD->getParent()->getName().empty()) | ||||||||
13721 | Diag(OpLoc, diag::err_unqualified_pointer_member_function) | ||||||||
13722 | << op->getSourceRange(); | ||||||||
13723 | else { | ||||||||
13724 | SmallString<32> Str; | ||||||||
13725 | StringRef Qual = (MD->getParent()->getName() + "::").toStringRef(Str); | ||||||||
13726 | Diag(OpLoc, diag::err_unqualified_pointer_member_function) | ||||||||
13727 | << op->getSourceRange() | ||||||||
13728 | << FixItHint::CreateInsertion(op->getSourceRange().getBegin(), Qual); | ||||||||
13729 | } | ||||||||
13730 | } | ||||||||
13731 | |||||||||
13732 | // Taking the address of a dtor is illegal per C++ [class.dtor]p2. | ||||||||
13733 | if (isa<CXXDestructorDecl>(MD)) | ||||||||
13734 | Diag(OpLoc, diag::err_typecheck_addrof_dtor) << op->getSourceRange(); | ||||||||
13735 | |||||||||
13736 | QualType MPTy = Context.getMemberPointerType( | ||||||||
13737 | op->getType(), Context.getTypeDeclType(MD->getParent()).getTypePtr()); | ||||||||
13738 | // Under the MS ABI, lock down the inheritance model now. | ||||||||
13739 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||||||
13740 | (void)isCompleteType(OpLoc, MPTy); | ||||||||
13741 | return MPTy; | ||||||||
13742 | } else if (lval != Expr::LV_Valid && lval != Expr::LV_IncompleteVoidType) { | ||||||||
13743 | // C99 6.5.3.2p1 | ||||||||
13744 | // The operand must be either an l-value or a function designator | ||||||||
13745 | if (!op->getType()->isFunctionType()) { | ||||||||
13746 | // Use a special diagnostic for loads from property references. | ||||||||
13747 | if (isa<PseudoObjectExpr>(op)) { | ||||||||
13748 | AddressOfError = AO_Property_Expansion; | ||||||||
13749 | } else { | ||||||||
13750 | Diag(OpLoc, diag::err_typecheck_invalid_lvalue_addrof) | ||||||||
13751 | << op->getType() << op->getSourceRange(); | ||||||||
13752 | return QualType(); | ||||||||
13753 | } | ||||||||
13754 | } | ||||||||
13755 | } else if (op->getObjectKind() == OK_BitField) { // C99 6.5.3.2p1 | ||||||||
13756 | // The operand cannot be a bit-field | ||||||||
13757 | AddressOfError = AO_Bit_Field; | ||||||||
13758 | } else if (op->getObjectKind() == OK_VectorComponent) { | ||||||||
13759 | // The operand cannot be an element of a vector | ||||||||
13760 | AddressOfError = AO_Vector_Element; | ||||||||
13761 | } else if (op->getObjectKind() == OK_MatrixComponent) { | ||||||||
13762 | // The operand cannot be an element of a matrix. | ||||||||
13763 | AddressOfError = AO_Matrix_Element; | ||||||||
13764 | } else if (dcl) { // C99 6.5.3.2p1 | ||||||||
13765 | // We have an lvalue with a decl. Make sure the decl is not declared | ||||||||
13766 | // with the register storage-class specifier. | ||||||||
13767 | if (const VarDecl *vd = dyn_cast<VarDecl>(dcl)) { | ||||||||
13768 | // in C++ it is not error to take address of a register | ||||||||
13769 | // variable (c++03 7.1.1P3) | ||||||||
13770 | if (vd->getStorageClass() == SC_Register && | ||||||||
13771 | !getLangOpts().CPlusPlus) { | ||||||||
13772 | AddressOfError = AO_Register_Variable; | ||||||||
13773 | } | ||||||||
13774 | } else if (isa<MSPropertyDecl>(dcl)) { | ||||||||
13775 | AddressOfError = AO_Property_Expansion; | ||||||||
13776 | } else if (isa<FunctionTemplateDecl>(dcl)) { | ||||||||
13777 | return Context.OverloadTy; | ||||||||
13778 | } else if (isa<FieldDecl>(dcl) || isa<IndirectFieldDecl>(dcl)) { | ||||||||
13779 | // Okay: we can take the address of a field. | ||||||||
13780 | // Could be a pointer to member, though, if there is an explicit | ||||||||
13781 | // scope qualifier for the class. | ||||||||
13782 | if (isa<DeclRefExpr>(op) && cast<DeclRefExpr>(op)->getQualifier()) { | ||||||||
13783 | DeclContext *Ctx = dcl->getDeclContext(); | ||||||||
13784 | if (Ctx && Ctx->isRecord()) { | ||||||||
13785 | if (dcl->getType()->isReferenceType()) { | ||||||||
13786 | Diag(OpLoc, | ||||||||
13787 | diag::err_cannot_form_pointer_to_member_of_reference_type) | ||||||||
13788 | << dcl->getDeclName() << dcl->getType(); | ||||||||
13789 | return QualType(); | ||||||||
13790 | } | ||||||||
13791 | |||||||||
13792 | while (cast<RecordDecl>(Ctx)->isAnonymousStructOrUnion()) | ||||||||
13793 | Ctx = Ctx->getParent(); | ||||||||
13794 | |||||||||
13795 | QualType MPTy = Context.getMemberPointerType( | ||||||||
13796 | op->getType(), | ||||||||
13797 | Context.getTypeDeclType(cast<RecordDecl>(Ctx)).getTypePtr()); | ||||||||
13798 | // Under the MS ABI, lock down the inheritance model now. | ||||||||
13799 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||||||
13800 | (void)isCompleteType(OpLoc, MPTy); | ||||||||
13801 | return MPTy; | ||||||||
13802 | } | ||||||||
13803 | } | ||||||||
13804 | } else if (!isa<FunctionDecl>(dcl) && !isa<NonTypeTemplateParmDecl>(dcl) && | ||||||||
13805 | !isa<BindingDecl>(dcl) && !isa<MSGuidDecl>(dcl)) | ||||||||
13806 | llvm_unreachable("Unknown/unexpected decl type")::llvm::llvm_unreachable_internal("Unknown/unexpected decl type" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13806); | ||||||||
13807 | } | ||||||||
13808 | |||||||||
13809 | if (AddressOfError != AO_No_Error) { | ||||||||
13810 | diagnoseAddressOfInvalidType(*this, OpLoc, op, AddressOfError); | ||||||||
13811 | return QualType(); | ||||||||
13812 | } | ||||||||
13813 | |||||||||
13814 | if (lval == Expr::LV_IncompleteVoidType) { | ||||||||
13815 | // Taking the address of a void variable is technically illegal, but we | ||||||||
13816 | // allow it in cases which are otherwise valid. | ||||||||
13817 | // Example: "extern void x; void* y = &x;". | ||||||||
13818 | Diag(OpLoc, diag::ext_typecheck_addrof_void) << op->getSourceRange(); | ||||||||
13819 | } | ||||||||
13820 | |||||||||
13821 | // If the operand has type "type", the result has type "pointer to type". | ||||||||
13822 | if (op->getType()->isObjCObjectType()) | ||||||||
13823 | return Context.getObjCObjectPointerType(op->getType()); | ||||||||
13824 | |||||||||
13825 | CheckAddressOfPackedMember(op); | ||||||||
13826 | |||||||||
13827 | return Context.getPointerType(op->getType()); | ||||||||
13828 | } | ||||||||
13829 | |||||||||
13830 | static void RecordModifiableNonNullParam(Sema &S, const Expr *Exp) { | ||||||||
13831 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Exp); | ||||||||
13832 | if (!DRE) | ||||||||
13833 | return; | ||||||||
13834 | const Decl *D = DRE->getDecl(); | ||||||||
13835 | if (!D) | ||||||||
13836 | return; | ||||||||
13837 | const ParmVarDecl *Param = dyn_cast<ParmVarDecl>(D); | ||||||||
13838 | if (!Param) | ||||||||
13839 | return; | ||||||||
13840 | if (const FunctionDecl* FD = dyn_cast<FunctionDecl>(Param->getDeclContext())) | ||||||||
13841 | if (!FD->hasAttr<NonNullAttr>() && !Param->hasAttr<NonNullAttr>()) | ||||||||
13842 | return; | ||||||||
13843 | if (FunctionScopeInfo *FD = S.getCurFunction()) | ||||||||
13844 | if (!FD->ModifiedNonNullParams.count(Param)) | ||||||||
13845 | FD->ModifiedNonNullParams.insert(Param); | ||||||||
13846 | } | ||||||||
13847 | |||||||||
13848 | /// CheckIndirectionOperand - Type check unary indirection (prefix '*'). | ||||||||
13849 | static QualType CheckIndirectionOperand(Sema &S, Expr *Op, ExprValueKind &VK, | ||||||||
13850 | SourceLocation OpLoc) { | ||||||||
13851 | if (Op->isTypeDependent()) | ||||||||
13852 | return S.Context.DependentTy; | ||||||||
13853 | |||||||||
13854 | ExprResult ConvResult = S.UsualUnaryConversions(Op); | ||||||||
13855 | if (ConvResult.isInvalid()) | ||||||||
13856 | return QualType(); | ||||||||
13857 | Op = ConvResult.get(); | ||||||||
13858 | QualType OpTy = Op->getType(); | ||||||||
13859 | QualType Result; | ||||||||
13860 | |||||||||
13861 | if (isa<CXXReinterpretCastExpr>(Op)) { | ||||||||
13862 | QualType OpOrigType = Op->IgnoreParenCasts()->getType(); | ||||||||
13863 | S.CheckCompatibleReinterpretCast(OpOrigType, OpTy, /*IsDereference*/true, | ||||||||
13864 | Op->getSourceRange()); | ||||||||
13865 | } | ||||||||
13866 | |||||||||
13867 | if (const PointerType *PT = OpTy->getAs<PointerType>()) | ||||||||
13868 | { | ||||||||
13869 | Result = PT->getPointeeType(); | ||||||||
13870 | } | ||||||||
13871 | else if (const ObjCObjectPointerType *OPT = | ||||||||
13872 | OpTy->getAs<ObjCObjectPointerType>()) | ||||||||
13873 | Result = OPT->getPointeeType(); | ||||||||
13874 | else { | ||||||||
13875 | ExprResult PR = S.CheckPlaceholderExpr(Op); | ||||||||
13876 | if (PR.isInvalid()) return QualType(); | ||||||||
13877 | if (PR.get() != Op) | ||||||||
13878 | return CheckIndirectionOperand(S, PR.get(), VK, OpLoc); | ||||||||
13879 | } | ||||||||
13880 | |||||||||
13881 | if (Result.isNull()) { | ||||||||
13882 | S.Diag(OpLoc, diag::err_typecheck_indirection_requires_pointer) | ||||||||
13883 | << OpTy << Op->getSourceRange(); | ||||||||
13884 | return QualType(); | ||||||||
13885 | } | ||||||||
13886 | |||||||||
13887 | // Note that per both C89 and C99, indirection is always legal, even if Result | ||||||||
13888 | // is an incomplete type or void. It would be possible to warn about | ||||||||
13889 | // dereferencing a void pointer, but it's completely well-defined, and such a | ||||||||
13890 | // warning is unlikely to catch any mistakes. In C++, indirection is not valid | ||||||||
13891 | // for pointers to 'void' but is fine for any other pointer type: | ||||||||
13892 | // | ||||||||
13893 | // C++ [expr.unary.op]p1: | ||||||||
13894 | // [...] the expression to which [the unary * operator] is applied shall | ||||||||
13895 | // be a pointer to an object type, or a pointer to a function type | ||||||||
13896 | if (S.getLangOpts().CPlusPlus && Result->isVoidType()) | ||||||||
13897 | S.Diag(OpLoc, diag::ext_typecheck_indirection_through_void_pointer) | ||||||||
13898 | << OpTy << Op->getSourceRange(); | ||||||||
13899 | |||||||||
13900 | // Dereferences are usually l-values... | ||||||||
13901 | VK = VK_LValue; | ||||||||
13902 | |||||||||
13903 | // ...except that certain expressions are never l-values in C. | ||||||||
13904 | if (!S.getLangOpts().CPlusPlus && Result.isCForbiddenLValueType()) | ||||||||
13905 | VK = VK_PRValue; | ||||||||
13906 | |||||||||
13907 | return Result; | ||||||||
13908 | } | ||||||||
13909 | |||||||||
13910 | BinaryOperatorKind Sema::ConvertTokenKindToBinaryOpcode(tok::TokenKind Kind) { | ||||||||
13911 | BinaryOperatorKind Opc; | ||||||||
13912 | switch (Kind) { | ||||||||
13913 | default: llvm_unreachable("Unknown binop!")::llvm::llvm_unreachable_internal("Unknown binop!", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13913); | ||||||||
13914 | case tok::periodstar: Opc = BO_PtrMemD; break; | ||||||||
13915 | case tok::arrowstar: Opc = BO_PtrMemI; break; | ||||||||
13916 | case tok::star: Opc = BO_Mul; break; | ||||||||
13917 | case tok::slash: Opc = BO_Div; break; | ||||||||
13918 | case tok::percent: Opc = BO_Rem; break; | ||||||||
13919 | case tok::plus: Opc = BO_Add; break; | ||||||||
13920 | case tok::minus: Opc = BO_Sub; break; | ||||||||
13921 | case tok::lessless: Opc = BO_Shl; break; | ||||||||
13922 | case tok::greatergreater: Opc = BO_Shr; break; | ||||||||
13923 | case tok::lessequal: Opc = BO_LE; break; | ||||||||
13924 | case tok::less: Opc = BO_LT; break; | ||||||||
13925 | case tok::greaterequal: Opc = BO_GE; break; | ||||||||
13926 | case tok::greater: Opc = BO_GT; break; | ||||||||
13927 | case tok::exclaimequal: Opc = BO_NE; break; | ||||||||
13928 | case tok::equalequal: Opc = BO_EQ; break; | ||||||||
13929 | case tok::spaceship: Opc = BO_Cmp; break; | ||||||||
13930 | case tok::amp: Opc = BO_And; break; | ||||||||
13931 | case tok::caret: Opc = BO_Xor; break; | ||||||||
13932 | case tok::pipe: Opc = BO_Or; break; | ||||||||
13933 | case tok::ampamp: Opc = BO_LAnd; break; | ||||||||
13934 | case tok::pipepipe: Opc = BO_LOr; break; | ||||||||
13935 | case tok::equal: Opc = BO_Assign; break; | ||||||||
13936 | case tok::starequal: Opc = BO_MulAssign; break; | ||||||||
13937 | case tok::slashequal: Opc = BO_DivAssign; break; | ||||||||
13938 | case tok::percentequal: Opc = BO_RemAssign; break; | ||||||||
13939 | case tok::plusequal: Opc = BO_AddAssign; break; | ||||||||
13940 | case tok::minusequal: Opc = BO_SubAssign; break; | ||||||||
13941 | case tok::lesslessequal: Opc = BO_ShlAssign; break; | ||||||||
13942 | case tok::greatergreaterequal: Opc = BO_ShrAssign; break; | ||||||||
13943 | case tok::ampequal: Opc = BO_AndAssign; break; | ||||||||
13944 | case tok::caretequal: Opc = BO_XorAssign; break; | ||||||||
13945 | case tok::pipeequal: Opc = BO_OrAssign; break; | ||||||||
13946 | case tok::comma: Opc = BO_Comma; break; | ||||||||
13947 | } | ||||||||
13948 | return Opc; | ||||||||
13949 | } | ||||||||
13950 | |||||||||
13951 | static inline UnaryOperatorKind ConvertTokenKindToUnaryOpcode( | ||||||||
13952 | tok::TokenKind Kind) { | ||||||||
13953 | UnaryOperatorKind Opc; | ||||||||
13954 | switch (Kind) { | ||||||||
13955 | default: llvm_unreachable("Unknown unary op!")::llvm::llvm_unreachable_internal("Unknown unary op!", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 13955); | ||||||||
13956 | case tok::plusplus: Opc = UO_PreInc; break; | ||||||||
13957 | case tok::minusminus: Opc = UO_PreDec; break; | ||||||||
13958 | case tok::amp: Opc = UO_AddrOf; break; | ||||||||
13959 | case tok::star: Opc = UO_Deref; break; | ||||||||
13960 | case tok::plus: Opc = UO_Plus; break; | ||||||||
13961 | case tok::minus: Opc = UO_Minus; break; | ||||||||
13962 | case tok::tilde: Opc = UO_Not; break; | ||||||||
13963 | case tok::exclaim: Opc = UO_LNot; break; | ||||||||
13964 | case tok::kw___real: Opc = UO_Real; break; | ||||||||
13965 | case tok::kw___imag: Opc = UO_Imag; break; | ||||||||
13966 | case tok::kw___extension__: Opc = UO_Extension; break; | ||||||||
13967 | } | ||||||||
13968 | return Opc; | ||||||||
13969 | } | ||||||||
13970 | |||||||||
13971 | /// DiagnoseSelfAssignment - Emits a warning if a value is assigned to itself. | ||||||||
13972 | /// This warning suppressed in the event of macro expansions. | ||||||||
13973 | static void DiagnoseSelfAssignment(Sema &S, Expr *LHSExpr, Expr *RHSExpr, | ||||||||
13974 | SourceLocation OpLoc, bool IsBuiltin) { | ||||||||
13975 | if (S.inTemplateInstantiation()) | ||||||||
13976 | return; | ||||||||
13977 | if (S.isUnevaluatedContext()) | ||||||||
13978 | return; | ||||||||
13979 | if (OpLoc.isInvalid() || OpLoc.isMacroID()) | ||||||||
13980 | return; | ||||||||
13981 | LHSExpr = LHSExpr->IgnoreParenImpCasts(); | ||||||||
13982 | RHSExpr = RHSExpr->IgnoreParenImpCasts(); | ||||||||
13983 | const DeclRefExpr *LHSDeclRef = dyn_cast<DeclRefExpr>(LHSExpr); | ||||||||
13984 | const DeclRefExpr *RHSDeclRef = dyn_cast<DeclRefExpr>(RHSExpr); | ||||||||
13985 | if (!LHSDeclRef || !RHSDeclRef || | ||||||||
13986 | LHSDeclRef->getLocation().isMacroID() || | ||||||||
13987 | RHSDeclRef->getLocation().isMacroID()) | ||||||||
13988 | return; | ||||||||
13989 | const ValueDecl *LHSDecl = | ||||||||
13990 | cast<ValueDecl>(LHSDeclRef->getDecl()->getCanonicalDecl()); | ||||||||
13991 | const ValueDecl *RHSDecl = | ||||||||
13992 | cast<ValueDecl>(RHSDeclRef->getDecl()->getCanonicalDecl()); | ||||||||
13993 | if (LHSDecl != RHSDecl) | ||||||||
13994 | return; | ||||||||
13995 | if (LHSDecl->getType().isVolatileQualified()) | ||||||||
13996 | return; | ||||||||
13997 | if (const ReferenceType *RefTy = LHSDecl->getType()->getAs<ReferenceType>()) | ||||||||
13998 | if (RefTy->getPointeeType().isVolatileQualified()) | ||||||||
13999 | return; | ||||||||
14000 | |||||||||
14001 | S.Diag(OpLoc, IsBuiltin ? diag::warn_self_assignment_builtin | ||||||||
14002 | : diag::warn_self_assignment_overloaded) | ||||||||
14003 | << LHSDeclRef->getType() << LHSExpr->getSourceRange() | ||||||||
14004 | << RHSExpr->getSourceRange(); | ||||||||
14005 | } | ||||||||
14006 | |||||||||
14007 | /// Check if a bitwise-& is performed on an Objective-C pointer. This | ||||||||
14008 | /// is usually indicative of introspection within the Objective-C pointer. | ||||||||
14009 | static void checkObjCPointerIntrospection(Sema &S, ExprResult &L, ExprResult &R, | ||||||||
14010 | SourceLocation OpLoc) { | ||||||||
14011 | if (!S.getLangOpts().ObjC) | ||||||||
14012 | return; | ||||||||
14013 | |||||||||
14014 | const Expr *ObjCPointerExpr = nullptr, *OtherExpr = nullptr; | ||||||||
14015 | const Expr *LHS = L.get(); | ||||||||
14016 | const Expr *RHS = R.get(); | ||||||||
14017 | |||||||||
14018 | if (LHS->IgnoreParenCasts()->getType()->isObjCObjectPointerType()) { | ||||||||
14019 | ObjCPointerExpr = LHS; | ||||||||
14020 | OtherExpr = RHS; | ||||||||
14021 | } | ||||||||
14022 | else if (RHS->IgnoreParenCasts()->getType()->isObjCObjectPointerType()) { | ||||||||
14023 | ObjCPointerExpr = RHS; | ||||||||
14024 | OtherExpr = LHS; | ||||||||
14025 | } | ||||||||
14026 | |||||||||
14027 | // This warning is deliberately made very specific to reduce false | ||||||||
14028 | // positives with logic that uses '&' for hashing. This logic mainly | ||||||||
14029 | // looks for code trying to introspect into tagged pointers, which | ||||||||
14030 | // code should generally never do. | ||||||||
14031 | if (ObjCPointerExpr && isa<IntegerLiteral>(OtherExpr->IgnoreParenCasts())) { | ||||||||
14032 | unsigned Diag = diag::warn_objc_pointer_masking; | ||||||||
14033 | // Determine if we are introspecting the result of performSelectorXXX. | ||||||||
14034 | const Expr *Ex = ObjCPointerExpr->IgnoreParenCasts(); | ||||||||
14035 | // Special case messages to -performSelector and friends, which | ||||||||
14036 | // can return non-pointer values boxed in a pointer value. | ||||||||
14037 | // Some clients may wish to silence warnings in this subcase. | ||||||||
14038 | if (const ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(Ex)) { | ||||||||
14039 | Selector S = ME->getSelector(); | ||||||||
14040 | StringRef SelArg0 = S.getNameForSlot(0); | ||||||||
14041 | if (SelArg0.startswith("performSelector")) | ||||||||
14042 | Diag = diag::warn_objc_pointer_masking_performSelector; | ||||||||
14043 | } | ||||||||
14044 | |||||||||
14045 | S.Diag(OpLoc, Diag) | ||||||||
14046 | << ObjCPointerExpr->getSourceRange(); | ||||||||
14047 | } | ||||||||
14048 | } | ||||||||
14049 | |||||||||
14050 | static NamedDecl *getDeclFromExpr(Expr *E) { | ||||||||
14051 | if (!E) | ||||||||
14052 | return nullptr; | ||||||||
14053 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
14054 | return DRE->getDecl(); | ||||||||
14055 | if (auto *ME = dyn_cast<MemberExpr>(E)) | ||||||||
14056 | return ME->getMemberDecl(); | ||||||||
14057 | if (auto *IRE = dyn_cast<ObjCIvarRefExpr>(E)) | ||||||||
14058 | return IRE->getDecl(); | ||||||||
14059 | return nullptr; | ||||||||
14060 | } | ||||||||
14061 | |||||||||
14062 | // This helper function promotes a binary operator's operands (which are of a | ||||||||
14063 | // half vector type) to a vector of floats and then truncates the result to | ||||||||
14064 | // a vector of either half or short. | ||||||||
14065 | static ExprResult convertHalfVecBinOp(Sema &S, ExprResult LHS, ExprResult RHS, | ||||||||
14066 | BinaryOperatorKind Opc, QualType ResultTy, | ||||||||
14067 | ExprValueKind VK, ExprObjectKind OK, | ||||||||
14068 | bool IsCompAssign, SourceLocation OpLoc, | ||||||||
14069 | FPOptionsOverride FPFeatures) { | ||||||||
14070 | auto &Context = S.getASTContext(); | ||||||||
14071 | assert((isVector(ResultTy, Context.HalfTy) ||(static_cast <bool> ((isVector(ResultTy, Context.HalfTy ) || isVector(ResultTy, Context.ShortTy)) && "Result must be a vector of half or short" ) ? void (0) : __assert_fail ("(isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context.ShortTy)) && \"Result must be a vector of half or short\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14073, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14072 | isVector(ResultTy, Context.ShortTy)) &&(static_cast <bool> ((isVector(ResultTy, Context.HalfTy ) || isVector(ResultTy, Context.ShortTy)) && "Result must be a vector of half or short" ) ? void (0) : __assert_fail ("(isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context.ShortTy)) && \"Result must be a vector of half or short\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14073, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14073 | "Result must be a vector of half or short")(static_cast <bool> ((isVector(ResultTy, Context.HalfTy ) || isVector(ResultTy, Context.ShortTy)) && "Result must be a vector of half or short" ) ? void (0) : __assert_fail ("(isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context.ShortTy)) && \"Result must be a vector of half or short\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14073, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14074 | assert(isVector(LHS.get()->getType(), Context.HalfTy) &&(static_cast <bool> (isVector(LHS.get()->getType(), Context .HalfTy) && isVector(RHS.get()->getType(), Context .HalfTy) && "both operands expected to be a half vector" ) ? void (0) : __assert_fail ("isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && \"both operands expected to be a half vector\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14076, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14075 | isVector(RHS.get()->getType(), Context.HalfTy) &&(static_cast <bool> (isVector(LHS.get()->getType(), Context .HalfTy) && isVector(RHS.get()->getType(), Context .HalfTy) && "both operands expected to be a half vector" ) ? void (0) : __assert_fail ("isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && \"both operands expected to be a half vector\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14076, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14076 | "both operands expected to be a half vector")(static_cast <bool> (isVector(LHS.get()->getType(), Context .HalfTy) && isVector(RHS.get()->getType(), Context .HalfTy) && "both operands expected to be a half vector" ) ? void (0) : __assert_fail ("isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && \"both operands expected to be a half vector\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14076, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14077 | |||||||||
14078 | RHS = convertVector(RHS.get(), Context.FloatTy, S); | ||||||||
14079 | QualType BinOpResTy = RHS.get()->getType(); | ||||||||
14080 | |||||||||
14081 | // If Opc is a comparison, ResultType is a vector of shorts. In that case, | ||||||||
14082 | // change BinOpResTy to a vector of ints. | ||||||||
14083 | if (isVector(ResultTy, Context.ShortTy)) | ||||||||
14084 | BinOpResTy = S.GetSignedVectorType(BinOpResTy); | ||||||||
14085 | |||||||||
14086 | if (IsCompAssign) | ||||||||
14087 | return CompoundAssignOperator::Create(Context, LHS.get(), RHS.get(), Opc, | ||||||||
14088 | ResultTy, VK, OK, OpLoc, FPFeatures, | ||||||||
14089 | BinOpResTy, BinOpResTy); | ||||||||
14090 | |||||||||
14091 | LHS = convertVector(LHS.get(), Context.FloatTy, S); | ||||||||
14092 | auto *BO = BinaryOperator::Create(Context, LHS.get(), RHS.get(), Opc, | ||||||||
14093 | BinOpResTy, VK, OK, OpLoc, FPFeatures); | ||||||||
14094 | return convertVector(BO, ResultTy->castAs<VectorType>()->getElementType(), S); | ||||||||
14095 | } | ||||||||
14096 | |||||||||
14097 | static std::pair<ExprResult, ExprResult> | ||||||||
14098 | CorrectDelayedTyposInBinOp(Sema &S, BinaryOperatorKind Opc, Expr *LHSExpr, | ||||||||
14099 | Expr *RHSExpr) { | ||||||||
14100 | ExprResult LHS = LHSExpr, RHS = RHSExpr; | ||||||||
14101 | if (!S.Context.isDependenceAllowed()) { | ||||||||
14102 | // C cannot handle TypoExpr nodes on either side of a binop because it | ||||||||
14103 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||||||
14104 | // been dealt with before checking the operands. | ||||||||
14105 | LHS = S.CorrectDelayedTyposInExpr(LHS); | ||||||||
14106 | RHS = S.CorrectDelayedTyposInExpr( | ||||||||
14107 | RHS, /*InitDecl=*/nullptr, /*RecoverUncorrectedTypos=*/false, | ||||||||
14108 | [Opc, LHS](Expr *E) { | ||||||||
14109 | if (Opc != BO_Assign) | ||||||||
14110 | return ExprResult(E); | ||||||||
14111 | // Avoid correcting the RHS to the same Expr as the LHS. | ||||||||
14112 | Decl *D = getDeclFromExpr(E); | ||||||||
14113 | return (D && D == getDeclFromExpr(LHS.get())) ? ExprError() : E; | ||||||||
14114 | }); | ||||||||
14115 | } | ||||||||
14116 | return std::make_pair(LHS, RHS); | ||||||||
14117 | } | ||||||||
14118 | |||||||||
14119 | /// Returns true if conversion between vectors of halfs and vectors of floats | ||||||||
14120 | /// is needed. | ||||||||
14121 | static bool needsConversionOfHalfVec(bool OpRequiresConversion, ASTContext &Ctx, | ||||||||
14122 | Expr *E0, Expr *E1 = nullptr) { | ||||||||
14123 | if (!OpRequiresConversion || Ctx.getLangOpts().NativeHalfType || | ||||||||
14124 | Ctx.getTargetInfo().useFP16ConversionIntrinsics()) | ||||||||
14125 | return false; | ||||||||
14126 | |||||||||
14127 | auto HasVectorOfHalfType = [&Ctx](Expr *E) { | ||||||||
14128 | QualType Ty = E->IgnoreImplicit()->getType(); | ||||||||
14129 | |||||||||
14130 | // Don't promote half precision neon vectors like float16x4_t in arm_neon.h | ||||||||
14131 | // to vectors of floats. Although the element type of the vectors is __fp16, | ||||||||
14132 | // the vectors shouldn't be treated as storage-only types. See the | ||||||||
14133 | // discussion here: https://reviews.llvm.org/rG825235c140e7 | ||||||||
14134 | if (const VectorType *VT = Ty->getAs<VectorType>()) { | ||||||||
14135 | if (VT->getVectorKind() == VectorType::NeonVector) | ||||||||
14136 | return false; | ||||||||
14137 | return VT->getElementType().getCanonicalType() == Ctx.HalfTy; | ||||||||
14138 | } | ||||||||
14139 | return false; | ||||||||
14140 | }; | ||||||||
14141 | |||||||||
14142 | return HasVectorOfHalfType(E0) && (!E1 || HasVectorOfHalfType(E1)); | ||||||||
14143 | } | ||||||||
14144 | |||||||||
14145 | /// CreateBuiltinBinOp - Creates a new built-in binary operation with | ||||||||
14146 | /// operator @p Opc at location @c TokLoc. This routine only supports | ||||||||
14147 | /// built-in operations; ActOnBinOp handles overloaded operators. | ||||||||
14148 | ExprResult Sema::CreateBuiltinBinOp(SourceLocation OpLoc, | ||||||||
14149 | BinaryOperatorKind Opc, | ||||||||
14150 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
14151 | if (getLangOpts().CPlusPlus11 && isa<InitListExpr>(RHSExpr)) { | ||||||||
14152 | // The syntax only allows initializer lists on the RHS of assignment, | ||||||||
14153 | // so we don't need to worry about accepting invalid code for | ||||||||
14154 | // non-assignment operators. | ||||||||
14155 | // C++11 5.17p9: | ||||||||
14156 | // The meaning of x = {v} [...] is that of x = T(v) [...]. The meaning | ||||||||
14157 | // of x = {} is x = T(). | ||||||||
14158 | InitializationKind Kind = InitializationKind::CreateDirectList( | ||||||||
14159 | RHSExpr->getBeginLoc(), RHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
14160 | InitializedEntity Entity = | ||||||||
14161 | InitializedEntity::InitializeTemporary(LHSExpr->getType()); | ||||||||
14162 | InitializationSequence InitSeq(*this, Entity, Kind, RHSExpr); | ||||||||
14163 | ExprResult Init = InitSeq.Perform(*this, Entity, Kind, RHSExpr); | ||||||||
14164 | if (Init.isInvalid()) | ||||||||
14165 | return Init; | ||||||||
14166 | RHSExpr = Init.get(); | ||||||||
14167 | } | ||||||||
14168 | |||||||||
14169 | ExprResult LHS = LHSExpr, RHS = RHSExpr; | ||||||||
14170 | QualType ResultTy; // Result type of the binary operator. | ||||||||
14171 | // The following two variables are used for compound assignment operators | ||||||||
14172 | QualType CompLHSTy; // Type of LHS after promotions for computation | ||||||||
14173 | QualType CompResultTy; // Type of computation result | ||||||||
14174 | ExprValueKind VK = VK_PRValue; | ||||||||
14175 | ExprObjectKind OK = OK_Ordinary; | ||||||||
14176 | bool ConvertHalfVec = false; | ||||||||
14177 | |||||||||
14178 | std::tie(LHS, RHS) = CorrectDelayedTyposInBinOp(*this, Opc, LHSExpr, RHSExpr); | ||||||||
14179 | if (!LHS.isUsable() || !RHS.isUsable()) | ||||||||
14180 | return ExprError(); | ||||||||
14181 | |||||||||
14182 | if (getLangOpts().OpenCL) { | ||||||||
14183 | QualType LHSTy = LHSExpr->getType(); | ||||||||
14184 | QualType RHSTy = RHSExpr->getType(); | ||||||||
14185 | // OpenCLC v2.0 s6.13.11.1 allows atomic variables to be initialized by | ||||||||
14186 | // the ATOMIC_VAR_INIT macro. | ||||||||
14187 | if (LHSTy->isAtomicType() || RHSTy->isAtomicType()) { | ||||||||
14188 | SourceRange SR(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
14189 | if (BO_Assign == Opc) | ||||||||
14190 | Diag(OpLoc, diag::err_opencl_atomic_init) << 0 << SR; | ||||||||
14191 | else | ||||||||
14192 | ResultTy = InvalidOperands(OpLoc, LHS, RHS); | ||||||||
14193 | return ExprError(); | ||||||||
14194 | } | ||||||||
14195 | |||||||||
14196 | // OpenCL special types - image, sampler, pipe, and blocks are to be used | ||||||||
14197 | // only with a builtin functions and therefore should be disallowed here. | ||||||||
14198 | if (LHSTy->isImageType() || RHSTy->isImageType() || | ||||||||
14199 | LHSTy->isSamplerT() || RHSTy->isSamplerT() || | ||||||||
14200 | LHSTy->isPipeType() || RHSTy->isPipeType() || | ||||||||
14201 | LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) { | ||||||||
14202 | ResultTy = InvalidOperands(OpLoc, LHS, RHS); | ||||||||
14203 | return ExprError(); | ||||||||
14204 | } | ||||||||
14205 | } | ||||||||
14206 | |||||||||
14207 | switch (Opc) { | ||||||||
14208 | case BO_Assign: | ||||||||
14209 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, QualType()); | ||||||||
14210 | if (getLangOpts().CPlusPlus && | ||||||||
14211 | LHS.get()->getObjectKind() != OK_ObjCProperty) { | ||||||||
14212 | VK = LHS.get()->getValueKind(); | ||||||||
14213 | OK = LHS.get()->getObjectKind(); | ||||||||
14214 | } | ||||||||
14215 | if (!ResultTy.isNull()) { | ||||||||
14216 | DiagnoseSelfAssignment(*this, LHS.get(), RHS.get(), OpLoc, true); | ||||||||
14217 | DiagnoseSelfMove(LHS.get(), RHS.get(), OpLoc); | ||||||||
14218 | |||||||||
14219 | // Avoid copying a block to the heap if the block is assigned to a local | ||||||||
14220 | // auto variable that is declared in the same scope as the block. This | ||||||||
14221 | // optimization is unsafe if the local variable is declared in an outer | ||||||||
14222 | // scope. For example: | ||||||||
14223 | // | ||||||||
14224 | // BlockTy b; | ||||||||
14225 | // { | ||||||||
14226 | // b = ^{...}; | ||||||||
14227 | // } | ||||||||
14228 | // // It is unsafe to invoke the block here if it wasn't copied to the | ||||||||
14229 | // // heap. | ||||||||
14230 | // b(); | ||||||||
14231 | |||||||||
14232 | if (auto *BE = dyn_cast<BlockExpr>(RHS.get()->IgnoreParens())) | ||||||||
14233 | if (auto *DRE = dyn_cast<DeclRefExpr>(LHS.get()->IgnoreParens())) | ||||||||
14234 | if (auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | ||||||||
14235 | if (VD->hasLocalStorage() && getCurScope()->isDeclScope(VD)) | ||||||||
14236 | BE->getBlockDecl()->setCanAvoidCopyToHeap(); | ||||||||
14237 | |||||||||
14238 | if (LHS.get()->getType().hasNonTrivialToPrimitiveCopyCUnion()) | ||||||||
14239 | checkNonTrivialCUnion(LHS.get()->getType(), LHS.get()->getExprLoc(), | ||||||||
14240 | NTCUC_Assignment, NTCUK_Copy); | ||||||||
14241 | } | ||||||||
14242 | RecordModifiableNonNullParam(*this, LHS.get()); | ||||||||
14243 | break; | ||||||||
14244 | case BO_PtrMemD: | ||||||||
14245 | case BO_PtrMemI: | ||||||||
14246 | ResultTy = CheckPointerToMemberOperands(LHS, RHS, VK, OpLoc, | ||||||||
14247 | Opc == BO_PtrMemI); | ||||||||
14248 | break; | ||||||||
14249 | case BO_Mul: | ||||||||
14250 | case BO_Div: | ||||||||
14251 | ConvertHalfVec = true; | ||||||||
14252 | ResultTy = CheckMultiplyDivideOperands(LHS, RHS, OpLoc, false, | ||||||||
14253 | Opc == BO_Div); | ||||||||
14254 | break; | ||||||||
14255 | case BO_Rem: | ||||||||
14256 | ResultTy = CheckRemainderOperands(LHS, RHS, OpLoc); | ||||||||
14257 | break; | ||||||||
14258 | case BO_Add: | ||||||||
14259 | ConvertHalfVec = true; | ||||||||
14260 | ResultTy = CheckAdditionOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14261 | break; | ||||||||
14262 | case BO_Sub: | ||||||||
14263 | ConvertHalfVec = true; | ||||||||
14264 | ResultTy = CheckSubtractionOperands(LHS, RHS, OpLoc); | ||||||||
14265 | break; | ||||||||
14266 | case BO_Shl: | ||||||||
14267 | case BO_Shr: | ||||||||
14268 | ResultTy = CheckShiftOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14269 | break; | ||||||||
14270 | case BO_LE: | ||||||||
14271 | case BO_LT: | ||||||||
14272 | case BO_GE: | ||||||||
14273 | case BO_GT: | ||||||||
14274 | ConvertHalfVec = true; | ||||||||
14275 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14276 | break; | ||||||||
14277 | case BO_EQ: | ||||||||
14278 | case BO_NE: | ||||||||
14279 | ConvertHalfVec = true; | ||||||||
14280 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14281 | break; | ||||||||
14282 | case BO_Cmp: | ||||||||
14283 | ConvertHalfVec = true; | ||||||||
14284 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14285 | assert(ResultTy.isNull() || ResultTy->getAsCXXRecordDecl())(static_cast <bool> (ResultTy.isNull() || ResultTy-> getAsCXXRecordDecl()) ? void (0) : __assert_fail ("ResultTy.isNull() || ResultTy->getAsCXXRecordDecl()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14285, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14286 | break; | ||||||||
14287 | case BO_And: | ||||||||
14288 | checkObjCPointerIntrospection(*this, LHS, RHS, OpLoc); | ||||||||
14289 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
14290 | case BO_Xor: | ||||||||
14291 | case BO_Or: | ||||||||
14292 | ResultTy = CheckBitwiseOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14293 | break; | ||||||||
14294 | case BO_LAnd: | ||||||||
14295 | case BO_LOr: | ||||||||
14296 | ConvertHalfVec = true; | ||||||||
14297 | ResultTy = CheckLogicalOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14298 | break; | ||||||||
14299 | case BO_MulAssign: | ||||||||
14300 | case BO_DivAssign: | ||||||||
14301 | ConvertHalfVec = true; | ||||||||
14302 | CompResultTy = CheckMultiplyDivideOperands(LHS, RHS, OpLoc, true, | ||||||||
14303 | Opc == BO_DivAssign); | ||||||||
14304 | CompLHSTy = CompResultTy; | ||||||||
14305 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
14306 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
14307 | break; | ||||||||
14308 | case BO_RemAssign: | ||||||||
14309 | CompResultTy = CheckRemainderOperands(LHS, RHS, OpLoc, true); | ||||||||
14310 | CompLHSTy = CompResultTy; | ||||||||
14311 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
14312 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
14313 | break; | ||||||||
14314 | case BO_AddAssign: | ||||||||
14315 | ConvertHalfVec = true; | ||||||||
14316 | CompResultTy = CheckAdditionOperands(LHS, RHS, OpLoc, Opc, &CompLHSTy); | ||||||||
14317 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
14318 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
14319 | break; | ||||||||
14320 | case BO_SubAssign: | ||||||||
14321 | ConvertHalfVec = true; | ||||||||
14322 | CompResultTy = CheckSubtractionOperands(LHS, RHS, OpLoc, &CompLHSTy); | ||||||||
14323 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
14324 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
14325 | break; | ||||||||
14326 | case BO_ShlAssign: | ||||||||
14327 | case BO_ShrAssign: | ||||||||
14328 | CompResultTy = CheckShiftOperands(LHS, RHS, OpLoc, Opc, true); | ||||||||
14329 | CompLHSTy = CompResultTy; | ||||||||
14330 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
14331 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
14332 | break; | ||||||||
14333 | case BO_AndAssign: | ||||||||
14334 | case BO_OrAssign: // fallthrough | ||||||||
14335 | DiagnoseSelfAssignment(*this, LHS.get(), RHS.get(), OpLoc, true); | ||||||||
14336 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
14337 | case BO_XorAssign: | ||||||||
14338 | CompResultTy = CheckBitwiseOperands(LHS, RHS, OpLoc, Opc); | ||||||||
14339 | CompLHSTy = CompResultTy; | ||||||||
14340 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
14341 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
14342 | break; | ||||||||
14343 | case BO_Comma: | ||||||||
14344 | ResultTy = CheckCommaOperands(*this, LHS, RHS, OpLoc); | ||||||||
14345 | if (getLangOpts().CPlusPlus && !RHS.isInvalid()) { | ||||||||
14346 | VK = RHS.get()->getValueKind(); | ||||||||
14347 | OK = RHS.get()->getObjectKind(); | ||||||||
14348 | } | ||||||||
14349 | break; | ||||||||
14350 | } | ||||||||
14351 | if (ResultTy.isNull() || LHS.isInvalid() || RHS.isInvalid()) | ||||||||
14352 | return ExprError(); | ||||||||
14353 | |||||||||
14354 | // Some of the binary operations require promoting operands of half vector to | ||||||||
14355 | // float vectors and truncating the result back to half vector. For now, we do | ||||||||
14356 | // this only when HalfArgsAndReturn is set (that is, when the target is arm or | ||||||||
14357 | // arm64). | ||||||||
14358 | assert((static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14361, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14359 | (Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) ==(static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14361, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14360 | isVector(LHS.get()->getType(), Context.HalfTy)) &&(static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14361, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14361 | "both sides are half vectors or neither sides are")(static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14361, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14362 | ConvertHalfVec = | ||||||||
14363 | needsConversionOfHalfVec(ConvertHalfVec, Context, LHS.get(), RHS.get()); | ||||||||
14364 | |||||||||
14365 | // Check for array bounds violations for both sides of the BinaryOperator | ||||||||
14366 | CheckArrayAccess(LHS.get()); | ||||||||
14367 | CheckArrayAccess(RHS.get()); | ||||||||
14368 | |||||||||
14369 | if (const ObjCIsaExpr *OISA = dyn_cast<ObjCIsaExpr>(LHS.get()->IgnoreParenCasts())) { | ||||||||
14370 | NamedDecl *ObjectSetClass = LookupSingleName(TUScope, | ||||||||
14371 | &Context.Idents.get("object_setClass"), | ||||||||
14372 | SourceLocation(), LookupOrdinaryName); | ||||||||
14373 | if (ObjectSetClass && isa<ObjCIsaExpr>(LHS.get())) { | ||||||||
14374 | SourceLocation RHSLocEnd = getLocForEndOfToken(RHS.get()->getEndLoc()); | ||||||||
14375 | Diag(LHS.get()->getExprLoc(), diag::warn_objc_isa_assign) | ||||||||
14376 | << FixItHint::CreateInsertion(LHS.get()->getBeginLoc(), | ||||||||
14377 | "object_setClass(") | ||||||||
14378 | << FixItHint::CreateReplacement(SourceRange(OISA->getOpLoc(), OpLoc), | ||||||||
14379 | ",") | ||||||||
14380 | << FixItHint::CreateInsertion(RHSLocEnd, ")"); | ||||||||
14381 | } | ||||||||
14382 | else | ||||||||
14383 | Diag(LHS.get()->getExprLoc(), diag::warn_objc_isa_assign); | ||||||||
14384 | } | ||||||||
14385 | else if (const ObjCIvarRefExpr *OIRE = | ||||||||
14386 | dyn_cast<ObjCIvarRefExpr>(LHS.get()->IgnoreParenCasts())) | ||||||||
14387 | DiagnoseDirectIsaAccess(*this, OIRE, OpLoc, RHS.get()); | ||||||||
14388 | |||||||||
14389 | // Opc is not a compound assignment if CompResultTy is null. | ||||||||
14390 | if (CompResultTy.isNull()) { | ||||||||
14391 | if (ConvertHalfVec) | ||||||||
14392 | return convertHalfVecBinOp(*this, LHS, RHS, Opc, ResultTy, VK, OK, false, | ||||||||
14393 | OpLoc, CurFPFeatureOverrides()); | ||||||||
14394 | return BinaryOperator::Create(Context, LHS.get(), RHS.get(), Opc, ResultTy, | ||||||||
14395 | VK, OK, OpLoc, CurFPFeatureOverrides()); | ||||||||
14396 | } | ||||||||
14397 | |||||||||
14398 | // Handle compound assignments. | ||||||||
14399 | if (getLangOpts().CPlusPlus && LHS.get()->getObjectKind() != | ||||||||
14400 | OK_ObjCProperty) { | ||||||||
14401 | VK = VK_LValue; | ||||||||
14402 | OK = LHS.get()->getObjectKind(); | ||||||||
14403 | } | ||||||||
14404 | |||||||||
14405 | // The LHS is not converted to the result type for fixed-point compound | ||||||||
14406 | // assignment as the common type is computed on demand. Reset the CompLHSTy | ||||||||
14407 | // to the LHS type we would have gotten after unary conversions. | ||||||||
14408 | if (CompResultTy->isFixedPointType()) | ||||||||
14409 | CompLHSTy = UsualUnaryConversions(LHS.get()).get()->getType(); | ||||||||
14410 | |||||||||
14411 | if (ConvertHalfVec) | ||||||||
14412 | return convertHalfVecBinOp(*this, LHS, RHS, Opc, ResultTy, VK, OK, true, | ||||||||
14413 | OpLoc, CurFPFeatureOverrides()); | ||||||||
14414 | |||||||||
14415 | return CompoundAssignOperator::Create( | ||||||||
14416 | Context, LHS.get(), RHS.get(), Opc, ResultTy, VK, OK, OpLoc, | ||||||||
14417 | CurFPFeatureOverrides(), CompLHSTy, CompResultTy); | ||||||||
14418 | } | ||||||||
14419 | |||||||||
14420 | /// DiagnoseBitwisePrecedence - Emit a warning when bitwise and comparison | ||||||||
14421 | /// operators are mixed in a way that suggests that the programmer forgot that | ||||||||
14422 | /// comparison operators have higher precedence. The most typical example of | ||||||||
14423 | /// such code is "flags & 0x0020 != 0", which is equivalent to "flags & 1". | ||||||||
14424 | static void DiagnoseBitwisePrecedence(Sema &Self, BinaryOperatorKind Opc, | ||||||||
14425 | SourceLocation OpLoc, Expr *LHSExpr, | ||||||||
14426 | Expr *RHSExpr) { | ||||||||
14427 | BinaryOperator *LHSBO = dyn_cast<BinaryOperator>(LHSExpr); | ||||||||
14428 | BinaryOperator *RHSBO = dyn_cast<BinaryOperator>(RHSExpr); | ||||||||
14429 | |||||||||
14430 | // Check that one of the sides is a comparison operator and the other isn't. | ||||||||
14431 | bool isLeftComp = LHSBO && LHSBO->isComparisonOp(); | ||||||||
14432 | bool isRightComp = RHSBO && RHSBO->isComparisonOp(); | ||||||||
14433 | if (isLeftComp == isRightComp) | ||||||||
14434 | return; | ||||||||
14435 | |||||||||
14436 | // Bitwise operations are sometimes used as eager logical ops. | ||||||||
14437 | // Don't diagnose this. | ||||||||
14438 | bool isLeftBitwise = LHSBO && LHSBO->isBitwiseOp(); | ||||||||
14439 | bool isRightBitwise = RHSBO && RHSBO->isBitwiseOp(); | ||||||||
14440 | if (isLeftBitwise || isRightBitwise) | ||||||||
14441 | return; | ||||||||
14442 | |||||||||
14443 | SourceRange DiagRange = isLeftComp | ||||||||
14444 | ? SourceRange(LHSExpr->getBeginLoc(), OpLoc) | ||||||||
14445 | : SourceRange(OpLoc, RHSExpr->getEndLoc()); | ||||||||
14446 | StringRef OpStr = isLeftComp ? LHSBO->getOpcodeStr() : RHSBO->getOpcodeStr(); | ||||||||
14447 | SourceRange ParensRange = | ||||||||
14448 | isLeftComp | ||||||||
14449 | ? SourceRange(LHSBO->getRHS()->getBeginLoc(), RHSExpr->getEndLoc()) | ||||||||
14450 | : SourceRange(LHSExpr->getBeginLoc(), RHSBO->getLHS()->getEndLoc()); | ||||||||
14451 | |||||||||
14452 | Self.Diag(OpLoc, diag::warn_precedence_bitwise_rel) | ||||||||
14453 | << DiagRange << BinaryOperator::getOpcodeStr(Opc) << OpStr; | ||||||||
14454 | SuggestParentheses(Self, OpLoc, | ||||||||
14455 | Self.PDiag(diag::note_precedence_silence) << OpStr, | ||||||||
14456 | (isLeftComp ? LHSExpr : RHSExpr)->getSourceRange()); | ||||||||
14457 | SuggestParentheses(Self, OpLoc, | ||||||||
14458 | Self.PDiag(diag::note_precedence_bitwise_first) | ||||||||
14459 | << BinaryOperator::getOpcodeStr(Opc), | ||||||||
14460 | ParensRange); | ||||||||
14461 | } | ||||||||
14462 | |||||||||
14463 | /// It accepts a '&&' expr that is inside a '||' one. | ||||||||
14464 | /// Emit a diagnostic together with a fixit hint that wraps the '&&' expression | ||||||||
14465 | /// in parentheses. | ||||||||
14466 | static void | ||||||||
14467 | EmitDiagnosticForLogicalAndInLogicalOr(Sema &Self, SourceLocation OpLoc, | ||||||||
14468 | BinaryOperator *Bop) { | ||||||||
14469 | assert(Bop->getOpcode() == BO_LAnd)(static_cast <bool> (Bop->getOpcode() == BO_LAnd) ? void (0) : __assert_fail ("Bop->getOpcode() == BO_LAnd", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14469, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14470 | Self.Diag(Bop->getOperatorLoc(), diag::warn_logical_and_in_logical_or) | ||||||||
14471 | << Bop->getSourceRange() << OpLoc; | ||||||||
14472 | SuggestParentheses(Self, Bop->getOperatorLoc(), | ||||||||
14473 | Self.PDiag(diag::note_precedence_silence) | ||||||||
14474 | << Bop->getOpcodeStr(), | ||||||||
14475 | Bop->getSourceRange()); | ||||||||
14476 | } | ||||||||
14477 | |||||||||
14478 | /// Returns true if the given expression can be evaluated as a constant | ||||||||
14479 | /// 'true'. | ||||||||
14480 | static bool EvaluatesAsTrue(Sema &S, Expr *E) { | ||||||||
14481 | bool Res; | ||||||||
14482 | return !E->isValueDependent() && | ||||||||
14483 | E->EvaluateAsBooleanCondition(Res, S.getASTContext()) && Res; | ||||||||
14484 | } | ||||||||
14485 | |||||||||
14486 | /// Returns true if the given expression can be evaluated as a constant | ||||||||
14487 | /// 'false'. | ||||||||
14488 | static bool EvaluatesAsFalse(Sema &S, Expr *E) { | ||||||||
14489 | bool Res; | ||||||||
14490 | return !E->isValueDependent() && | ||||||||
14491 | E->EvaluateAsBooleanCondition(Res, S.getASTContext()) && !Res; | ||||||||
14492 | } | ||||||||
14493 | |||||||||
14494 | /// Look for '&&' in the left hand of a '||' expr. | ||||||||
14495 | static void DiagnoseLogicalAndInLogicalOrLHS(Sema &S, SourceLocation OpLoc, | ||||||||
14496 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
14497 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(LHSExpr)) { | ||||||||
14498 | if (Bop->getOpcode() == BO_LAnd) { | ||||||||
14499 | // If it's "a && b || 0" don't warn since the precedence doesn't matter. | ||||||||
14500 | if (EvaluatesAsFalse(S, RHSExpr)) | ||||||||
14501 | return; | ||||||||
14502 | // If it's "1 && a || b" don't warn since the precedence doesn't matter. | ||||||||
14503 | if (!EvaluatesAsTrue(S, Bop->getLHS())) | ||||||||
14504 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, Bop); | ||||||||
14505 | } else if (Bop->getOpcode() == BO_LOr) { | ||||||||
14506 | if (BinaryOperator *RBop = dyn_cast<BinaryOperator>(Bop->getRHS())) { | ||||||||
14507 | // If it's "a || b && 1 || c" we didn't warn earlier for | ||||||||
14508 | // "a || b && 1", but warn now. | ||||||||
14509 | if (RBop->getOpcode() == BO_LAnd && EvaluatesAsTrue(S, RBop->getRHS())) | ||||||||
14510 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, RBop); | ||||||||
14511 | } | ||||||||
14512 | } | ||||||||
14513 | } | ||||||||
14514 | } | ||||||||
14515 | |||||||||
14516 | /// Look for '&&' in the right hand of a '||' expr. | ||||||||
14517 | static void DiagnoseLogicalAndInLogicalOrRHS(Sema &S, SourceLocation OpLoc, | ||||||||
14518 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
14519 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(RHSExpr)) { | ||||||||
14520 | if (Bop->getOpcode() == BO_LAnd) { | ||||||||
14521 | // If it's "0 || a && b" don't warn since the precedence doesn't matter. | ||||||||
14522 | if (EvaluatesAsFalse(S, LHSExpr)) | ||||||||
14523 | return; | ||||||||
14524 | // If it's "a || b && 1" don't warn since the precedence doesn't matter. | ||||||||
14525 | if (!EvaluatesAsTrue(S, Bop->getRHS())) | ||||||||
14526 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, Bop); | ||||||||
14527 | } | ||||||||
14528 | } | ||||||||
14529 | } | ||||||||
14530 | |||||||||
14531 | /// Look for bitwise op in the left or right hand of a bitwise op with | ||||||||
14532 | /// lower precedence and emit a diagnostic together with a fixit hint that wraps | ||||||||
14533 | /// the '&' expression in parentheses. | ||||||||
14534 | static void DiagnoseBitwiseOpInBitwiseOp(Sema &S, BinaryOperatorKind Opc, | ||||||||
14535 | SourceLocation OpLoc, Expr *SubExpr) { | ||||||||
14536 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(SubExpr)) { | ||||||||
14537 | if (Bop->isBitwiseOp() && Bop->getOpcode() < Opc) { | ||||||||
14538 | S.Diag(Bop->getOperatorLoc(), diag::warn_bitwise_op_in_bitwise_op) | ||||||||
14539 | << Bop->getOpcodeStr() << BinaryOperator::getOpcodeStr(Opc) | ||||||||
14540 | << Bop->getSourceRange() << OpLoc; | ||||||||
14541 | SuggestParentheses(S, Bop->getOperatorLoc(), | ||||||||
14542 | S.PDiag(diag::note_precedence_silence) | ||||||||
14543 | << Bop->getOpcodeStr(), | ||||||||
14544 | Bop->getSourceRange()); | ||||||||
14545 | } | ||||||||
14546 | } | ||||||||
14547 | } | ||||||||
14548 | |||||||||
14549 | static void DiagnoseAdditionInShift(Sema &S, SourceLocation OpLoc, | ||||||||
14550 | Expr *SubExpr, StringRef Shift) { | ||||||||
14551 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(SubExpr)) { | ||||||||
14552 | if (Bop->getOpcode() == BO_Add || Bop->getOpcode() == BO_Sub) { | ||||||||
14553 | StringRef Op = Bop->getOpcodeStr(); | ||||||||
14554 | S.Diag(Bop->getOperatorLoc(), diag::warn_addition_in_bitshift) | ||||||||
14555 | << Bop->getSourceRange() << OpLoc << Shift << Op; | ||||||||
14556 | SuggestParentheses(S, Bop->getOperatorLoc(), | ||||||||
14557 | S.PDiag(diag::note_precedence_silence) << Op, | ||||||||
14558 | Bop->getSourceRange()); | ||||||||
14559 | } | ||||||||
14560 | } | ||||||||
14561 | } | ||||||||
14562 | |||||||||
14563 | static void DiagnoseShiftCompare(Sema &S, SourceLocation OpLoc, | ||||||||
14564 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
14565 | CXXOperatorCallExpr *OCE = dyn_cast<CXXOperatorCallExpr>(LHSExpr); | ||||||||
14566 | if (!OCE) | ||||||||
14567 | return; | ||||||||
14568 | |||||||||
14569 | FunctionDecl *FD = OCE->getDirectCallee(); | ||||||||
14570 | if (!FD || !FD->isOverloadedOperator()) | ||||||||
14571 | return; | ||||||||
14572 | |||||||||
14573 | OverloadedOperatorKind Kind = FD->getOverloadedOperator(); | ||||||||
14574 | if (Kind != OO_LessLess && Kind != OO_GreaterGreater) | ||||||||
14575 | return; | ||||||||
14576 | |||||||||
14577 | S.Diag(OpLoc, diag::warn_overloaded_shift_in_comparison) | ||||||||
14578 | << LHSExpr->getSourceRange() << RHSExpr->getSourceRange() | ||||||||
14579 | << (Kind == OO_LessLess); | ||||||||
14580 | SuggestParentheses(S, OCE->getOperatorLoc(), | ||||||||
14581 | S.PDiag(diag::note_precedence_silence) | ||||||||
14582 | << (Kind == OO_LessLess ? "<<" : ">>"), | ||||||||
14583 | OCE->getSourceRange()); | ||||||||
14584 | SuggestParentheses( | ||||||||
14585 | S, OpLoc, S.PDiag(diag::note_evaluate_comparison_first), | ||||||||
14586 | SourceRange(OCE->getArg(1)->getBeginLoc(), RHSExpr->getEndLoc())); | ||||||||
14587 | } | ||||||||
14588 | |||||||||
14589 | /// DiagnoseBinOpPrecedence - Emit warnings for expressions with tricky | ||||||||
14590 | /// precedence. | ||||||||
14591 | static void DiagnoseBinOpPrecedence(Sema &Self, BinaryOperatorKind Opc, | ||||||||
14592 | SourceLocation OpLoc, Expr *LHSExpr, | ||||||||
14593 | Expr *RHSExpr){ | ||||||||
14594 | // Diagnose "arg1 'bitwise' arg2 'eq' arg3". | ||||||||
14595 | if (BinaryOperator::isBitwiseOp(Opc)) | ||||||||
14596 | DiagnoseBitwisePrecedence(Self, Opc, OpLoc, LHSExpr, RHSExpr); | ||||||||
14597 | |||||||||
14598 | // Diagnose "arg1 & arg2 | arg3" | ||||||||
14599 | if ((Opc == BO_Or || Opc == BO_Xor) && | ||||||||
14600 | !OpLoc.isMacroID()/* Don't warn in macros. */) { | ||||||||
14601 | DiagnoseBitwiseOpInBitwiseOp(Self, Opc, OpLoc, LHSExpr); | ||||||||
14602 | DiagnoseBitwiseOpInBitwiseOp(Self, Opc, OpLoc, RHSExpr); | ||||||||
14603 | } | ||||||||
14604 | |||||||||
14605 | // Warn about arg1 || arg2 && arg3, as GCC 4.3+ does. | ||||||||
14606 | // We don't warn for 'assert(a || b && "bad")' since this is safe. | ||||||||
14607 | if (Opc == BO_LOr && !OpLoc.isMacroID()/* Don't warn in macros. */) { | ||||||||
14608 | DiagnoseLogicalAndInLogicalOrLHS(Self, OpLoc, LHSExpr, RHSExpr); | ||||||||
14609 | DiagnoseLogicalAndInLogicalOrRHS(Self, OpLoc, LHSExpr, RHSExpr); | ||||||||
14610 | } | ||||||||
14611 | |||||||||
14612 | if ((Opc == BO_Shl && LHSExpr->getType()->isIntegralType(Self.getASTContext())) | ||||||||
14613 | || Opc == BO_Shr) { | ||||||||
14614 | StringRef Shift = BinaryOperator::getOpcodeStr(Opc); | ||||||||
14615 | DiagnoseAdditionInShift(Self, OpLoc, LHSExpr, Shift); | ||||||||
14616 | DiagnoseAdditionInShift(Self, OpLoc, RHSExpr, Shift); | ||||||||
14617 | } | ||||||||
14618 | |||||||||
14619 | // Warn on overloaded shift operators and comparisons, such as: | ||||||||
14620 | // cout << 5 == 4; | ||||||||
14621 | if (BinaryOperator::isComparisonOp(Opc)) | ||||||||
14622 | DiagnoseShiftCompare(Self, OpLoc, LHSExpr, RHSExpr); | ||||||||
14623 | } | ||||||||
14624 | |||||||||
14625 | // Binary Operators. 'Tok' is the token for the operator. | ||||||||
14626 | ExprResult Sema::ActOnBinOp(Scope *S, SourceLocation TokLoc, | ||||||||
14627 | tok::TokenKind Kind, | ||||||||
14628 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
14629 | BinaryOperatorKind Opc = ConvertTokenKindToBinaryOpcode(Kind); | ||||||||
14630 | assert(LHSExpr && "ActOnBinOp(): missing left expression")(static_cast <bool> (LHSExpr && "ActOnBinOp(): missing left expression" ) ? void (0) : __assert_fail ("LHSExpr && \"ActOnBinOp(): missing left expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14630, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14631 | assert(RHSExpr && "ActOnBinOp(): missing right expression")(static_cast <bool> (RHSExpr && "ActOnBinOp(): missing right expression" ) ? void (0) : __assert_fail ("RHSExpr && \"ActOnBinOp(): missing right expression\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14631, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14632 | |||||||||
14633 | // Emit warnings for tricky precedence issues, e.g. "bitfield & 0x4 == 0" | ||||||||
14634 | DiagnoseBinOpPrecedence(*this, Opc, TokLoc, LHSExpr, RHSExpr); | ||||||||
14635 | |||||||||
14636 | return BuildBinOp(S, TokLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14637 | } | ||||||||
14638 | |||||||||
14639 | void Sema::LookupBinOp(Scope *S, SourceLocation OpLoc, BinaryOperatorKind Opc, | ||||||||
14640 | UnresolvedSetImpl &Functions) { | ||||||||
14641 | OverloadedOperatorKind OverOp = BinaryOperator::getOverloadedOperator(Opc); | ||||||||
14642 | if (OverOp != OO_None && OverOp != OO_Equal) | ||||||||
14643 | LookupOverloadedOperatorName(OverOp, S, Functions); | ||||||||
14644 | |||||||||
14645 | // In C++20 onwards, we may have a second operator to look up. | ||||||||
14646 | if (getLangOpts().CPlusPlus20) { | ||||||||
14647 | if (OverloadedOperatorKind ExtraOp = getRewrittenOverloadedOperator(OverOp)) | ||||||||
14648 | LookupOverloadedOperatorName(ExtraOp, S, Functions); | ||||||||
14649 | } | ||||||||
14650 | } | ||||||||
14651 | |||||||||
14652 | /// Build an overloaded binary operator expression in the given scope. | ||||||||
14653 | static ExprResult BuildOverloadedBinOp(Sema &S, Scope *Sc, SourceLocation OpLoc, | ||||||||
14654 | BinaryOperatorKind Opc, | ||||||||
14655 | Expr *LHS, Expr *RHS) { | ||||||||
14656 | switch (Opc) { | ||||||||
14657 | case BO_Assign: | ||||||||
14658 | case BO_DivAssign: | ||||||||
14659 | case BO_RemAssign: | ||||||||
14660 | case BO_SubAssign: | ||||||||
14661 | case BO_AndAssign: | ||||||||
14662 | case BO_OrAssign: | ||||||||
14663 | case BO_XorAssign: | ||||||||
14664 | DiagnoseSelfAssignment(S, LHS, RHS, OpLoc, false); | ||||||||
14665 | CheckIdentityFieldAssignment(LHS, RHS, OpLoc, S); | ||||||||
14666 | break; | ||||||||
14667 | default: | ||||||||
14668 | break; | ||||||||
14669 | } | ||||||||
14670 | |||||||||
14671 | // Find all of the overloaded operators visible from this point. | ||||||||
14672 | UnresolvedSet<16> Functions; | ||||||||
14673 | S.LookupBinOp(Sc, OpLoc, Opc, Functions); | ||||||||
14674 | |||||||||
14675 | // Build the (potentially-overloaded, potentially-dependent) | ||||||||
14676 | // binary operation. | ||||||||
14677 | return S.CreateOverloadedBinOp(OpLoc, Opc, Functions, LHS, RHS); | ||||||||
14678 | } | ||||||||
14679 | |||||||||
14680 | ExprResult Sema::BuildBinOp(Scope *S, SourceLocation OpLoc, | ||||||||
14681 | BinaryOperatorKind Opc, | ||||||||
14682 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
14683 | ExprResult LHS, RHS; | ||||||||
14684 | std::tie(LHS, RHS) = CorrectDelayedTyposInBinOp(*this, Opc, LHSExpr, RHSExpr); | ||||||||
14685 | if (!LHS.isUsable() || !RHS.isUsable()) | ||||||||
14686 | return ExprError(); | ||||||||
14687 | LHSExpr = LHS.get(); | ||||||||
14688 | RHSExpr = RHS.get(); | ||||||||
14689 | |||||||||
14690 | // We want to end up calling one of checkPseudoObjectAssignment | ||||||||
14691 | // (if the LHS is a pseudo-object), BuildOverloadedBinOp (if | ||||||||
14692 | // both expressions are overloadable or either is type-dependent), | ||||||||
14693 | // or CreateBuiltinBinOp (in any other case). We also want to get | ||||||||
14694 | // any placeholder types out of the way. | ||||||||
14695 | |||||||||
14696 | // Handle pseudo-objects in the LHS. | ||||||||
14697 | if (const BuiltinType *pty = LHSExpr->getType()->getAsPlaceholderType()) { | ||||||||
14698 | // Assignments with a pseudo-object l-value need special analysis. | ||||||||
14699 | if (pty->getKind() == BuiltinType::PseudoObject && | ||||||||
14700 | BinaryOperator::isAssignmentOp(Opc)) | ||||||||
14701 | return checkPseudoObjectAssignment(S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14702 | |||||||||
14703 | // Don't resolve overloads if the other type is overloadable. | ||||||||
14704 | if (getLangOpts().CPlusPlus && pty->getKind() == BuiltinType::Overload) { | ||||||||
14705 | // We can't actually test that if we still have a placeholder, | ||||||||
14706 | // though. Fortunately, none of the exceptions we see in that | ||||||||
14707 | // code below are valid when the LHS is an overload set. Note | ||||||||
14708 | // that an overload set can be dependently-typed, but it never | ||||||||
14709 | // instantiates to having an overloadable type. | ||||||||
14710 | ExprResult resolvedRHS = CheckPlaceholderExpr(RHSExpr); | ||||||||
14711 | if (resolvedRHS.isInvalid()) return ExprError(); | ||||||||
14712 | RHSExpr = resolvedRHS.get(); | ||||||||
14713 | |||||||||
14714 | if (RHSExpr->isTypeDependent() || | ||||||||
14715 | RHSExpr->getType()->isOverloadableType()) | ||||||||
14716 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14717 | } | ||||||||
14718 | |||||||||
14719 | // If we're instantiating "a.x < b" or "A::x < b" and 'x' names a function | ||||||||
14720 | // template, diagnose the missing 'template' keyword instead of diagnosing | ||||||||
14721 | // an invalid use of a bound member function. | ||||||||
14722 | // | ||||||||
14723 | // Note that "A::x < b" might be valid if 'b' has an overloadable type due | ||||||||
14724 | // to C++1z [over.over]/1.4, but we already checked for that case above. | ||||||||
14725 | if (Opc == BO_LT && inTemplateInstantiation() && | ||||||||
14726 | (pty->getKind() == BuiltinType::BoundMember || | ||||||||
14727 | pty->getKind() == BuiltinType::Overload)) { | ||||||||
14728 | auto *OE = dyn_cast<OverloadExpr>(LHSExpr); | ||||||||
14729 | if (OE && !OE->hasTemplateKeyword() && !OE->hasExplicitTemplateArgs() && | ||||||||
14730 | std::any_of(OE->decls_begin(), OE->decls_end(), [](NamedDecl *ND) { | ||||||||
14731 | return isa<FunctionTemplateDecl>(ND); | ||||||||
14732 | })) { | ||||||||
14733 | Diag(OE->getQualifier() ? OE->getQualifierLoc().getBeginLoc() | ||||||||
14734 | : OE->getNameLoc(), | ||||||||
14735 | diag::err_template_kw_missing) | ||||||||
14736 | << OE->getName().getAsString() << ""; | ||||||||
14737 | return ExprError(); | ||||||||
14738 | } | ||||||||
14739 | } | ||||||||
14740 | |||||||||
14741 | ExprResult LHS = CheckPlaceholderExpr(LHSExpr); | ||||||||
14742 | if (LHS.isInvalid()) return ExprError(); | ||||||||
14743 | LHSExpr = LHS.get(); | ||||||||
14744 | } | ||||||||
14745 | |||||||||
14746 | // Handle pseudo-objects in the RHS. | ||||||||
14747 | if (const BuiltinType *pty = RHSExpr->getType()->getAsPlaceholderType()) { | ||||||||
14748 | // An overload in the RHS can potentially be resolved by the type | ||||||||
14749 | // being assigned to. | ||||||||
14750 | if (Opc == BO_Assign && pty->getKind() == BuiltinType::Overload) { | ||||||||
14751 | if (getLangOpts().CPlusPlus && | ||||||||
14752 | (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent() || | ||||||||
14753 | LHSExpr->getType()->isOverloadableType())) | ||||||||
14754 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14755 | |||||||||
14756 | return CreateBuiltinBinOp(OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14757 | } | ||||||||
14758 | |||||||||
14759 | // Don't resolve overloads if the other type is overloadable. | ||||||||
14760 | if (getLangOpts().CPlusPlus && pty->getKind() == BuiltinType::Overload && | ||||||||
14761 | LHSExpr->getType()->isOverloadableType()) | ||||||||
14762 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14763 | |||||||||
14764 | ExprResult resolvedRHS = CheckPlaceholderExpr(RHSExpr); | ||||||||
14765 | if (!resolvedRHS.isUsable()) return ExprError(); | ||||||||
14766 | RHSExpr = resolvedRHS.get(); | ||||||||
14767 | } | ||||||||
14768 | |||||||||
14769 | if (getLangOpts().CPlusPlus) { | ||||||||
14770 | // If either expression is type-dependent, always build an | ||||||||
14771 | // overloaded op. | ||||||||
14772 | if (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent()) | ||||||||
14773 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14774 | |||||||||
14775 | // Otherwise, build an overloaded op if either expression has an | ||||||||
14776 | // overloadable type. | ||||||||
14777 | if (LHSExpr->getType()->isOverloadableType() || | ||||||||
14778 | RHSExpr->getType()->isOverloadableType()) | ||||||||
14779 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14780 | } | ||||||||
14781 | |||||||||
14782 | if (getLangOpts().RecoveryAST && | ||||||||
14783 | (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent())) { | ||||||||
14784 | assert(!getLangOpts().CPlusPlus)(static_cast <bool> (!getLangOpts().CPlusPlus) ? void ( 0) : __assert_fail ("!getLangOpts().CPlusPlus", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14784, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14785 | assert((LHSExpr->containsErrors() || RHSExpr->containsErrors()) &&(static_cast <bool> ((LHSExpr->containsErrors() || RHSExpr ->containsErrors()) && "Should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(LHSExpr->containsErrors() || RHSExpr->containsErrors()) && \"Should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14786, __extension__ __PRETTY_FUNCTION__)) | ||||||||
14786 | "Should only occur in error-recovery path.")(static_cast <bool> ((LHSExpr->containsErrors() || RHSExpr ->containsErrors()) && "Should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(LHSExpr->containsErrors() || RHSExpr->containsErrors()) && \"Should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 14786, __extension__ __PRETTY_FUNCTION__)); | ||||||||
14787 | if (BinaryOperator::isCompoundAssignmentOp(Opc)) | ||||||||
14788 | // C [6.15.16] p3: | ||||||||
14789 | // An assignment expression has the value of the left operand after the | ||||||||
14790 | // assignment, but is not an lvalue. | ||||||||
14791 | return CompoundAssignOperator::Create( | ||||||||
14792 | Context, LHSExpr, RHSExpr, Opc, | ||||||||
14793 | LHSExpr->getType().getUnqualifiedType(), VK_PRValue, OK_Ordinary, | ||||||||
14794 | OpLoc, CurFPFeatureOverrides()); | ||||||||
14795 | QualType ResultType; | ||||||||
14796 | switch (Opc) { | ||||||||
14797 | case BO_Assign: | ||||||||
14798 | ResultType = LHSExpr->getType().getUnqualifiedType(); | ||||||||
14799 | break; | ||||||||
14800 | case BO_LT: | ||||||||
14801 | case BO_GT: | ||||||||
14802 | case BO_LE: | ||||||||
14803 | case BO_GE: | ||||||||
14804 | case BO_EQ: | ||||||||
14805 | case BO_NE: | ||||||||
14806 | case BO_LAnd: | ||||||||
14807 | case BO_LOr: | ||||||||
14808 | // These operators have a fixed result type regardless of operands. | ||||||||
14809 | ResultType = Context.IntTy; | ||||||||
14810 | break; | ||||||||
14811 | case BO_Comma: | ||||||||
14812 | ResultType = RHSExpr->getType(); | ||||||||
14813 | break; | ||||||||
14814 | default: | ||||||||
14815 | ResultType = Context.DependentTy; | ||||||||
14816 | break; | ||||||||
14817 | } | ||||||||
14818 | return BinaryOperator::Create(Context, LHSExpr, RHSExpr, Opc, ResultType, | ||||||||
14819 | VK_PRValue, OK_Ordinary, OpLoc, | ||||||||
14820 | CurFPFeatureOverrides()); | ||||||||
14821 | } | ||||||||
14822 | |||||||||
14823 | // Build a built-in binary operation. | ||||||||
14824 | return CreateBuiltinBinOp(OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
14825 | } | ||||||||
14826 | |||||||||
14827 | static bool isOverflowingIntegerType(ASTContext &Ctx, QualType T) { | ||||||||
14828 | if (T.isNull() || T->isDependentType()) | ||||||||
14829 | return false; | ||||||||
14830 | |||||||||
14831 | if (!T->isPromotableIntegerType()) | ||||||||
14832 | return true; | ||||||||
14833 | |||||||||
14834 | return Ctx.getIntWidth(T) >= Ctx.getIntWidth(Ctx.IntTy); | ||||||||
14835 | } | ||||||||
14836 | |||||||||
14837 | ExprResult Sema::CreateBuiltinUnaryOp(SourceLocation OpLoc, | ||||||||
14838 | UnaryOperatorKind Opc, | ||||||||
14839 | Expr *InputExpr) { | ||||||||
14840 | ExprResult Input = InputExpr; | ||||||||
14841 | ExprValueKind VK = VK_PRValue; | ||||||||
14842 | ExprObjectKind OK = OK_Ordinary; | ||||||||
14843 | QualType resultType; | ||||||||
14844 | bool CanOverflow = false; | ||||||||
14845 | |||||||||
14846 | bool ConvertHalfVec = false; | ||||||||
14847 | if (getLangOpts().OpenCL) { | ||||||||
14848 | QualType Ty = InputExpr->getType(); | ||||||||
14849 | // The only legal unary operation for atomics is '&'. | ||||||||
14850 | if ((Opc != UO_AddrOf && Ty->isAtomicType()) || | ||||||||
14851 | // OpenCL special types - image, sampler, pipe, and blocks are to be used | ||||||||
14852 | // only with a builtin functions and therefore should be disallowed here. | ||||||||
14853 | (Ty->isImageType() || Ty->isSamplerT() || Ty->isPipeType() | ||||||||
14854 | || Ty->isBlockPointerType())) { | ||||||||
14855 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14856 | << InputExpr->getType() | ||||||||
14857 | << Input.get()->getSourceRange()); | ||||||||
14858 | } | ||||||||
14859 | } | ||||||||
14860 | |||||||||
14861 | switch (Opc) { | ||||||||
14862 | case UO_PreInc: | ||||||||
14863 | case UO_PreDec: | ||||||||
14864 | case UO_PostInc: | ||||||||
14865 | case UO_PostDec: | ||||||||
14866 | resultType = CheckIncrementDecrementOperand(*this, Input.get(), VK, OK, | ||||||||
14867 | OpLoc, | ||||||||
14868 | Opc == UO_PreInc || | ||||||||
14869 | Opc == UO_PostInc, | ||||||||
14870 | Opc == UO_PreInc || | ||||||||
14871 | Opc == UO_PreDec); | ||||||||
14872 | CanOverflow = isOverflowingIntegerType(Context, resultType); | ||||||||
14873 | break; | ||||||||
14874 | case UO_AddrOf: | ||||||||
14875 | resultType = CheckAddressOfOperand(Input, OpLoc); | ||||||||
14876 | CheckAddressOfNoDeref(InputExpr); | ||||||||
14877 | RecordModifiableNonNullParam(*this, InputExpr); | ||||||||
14878 | break; | ||||||||
14879 | case UO_Deref: { | ||||||||
14880 | Input = DefaultFunctionArrayLvalueConversion(Input.get()); | ||||||||
14881 | if (Input.isInvalid()) return ExprError(); | ||||||||
14882 | resultType = CheckIndirectionOperand(*this, Input.get(), VK, OpLoc); | ||||||||
14883 | break; | ||||||||
14884 | } | ||||||||
14885 | case UO_Plus: | ||||||||
14886 | case UO_Minus: | ||||||||
14887 | CanOverflow = Opc == UO_Minus && | ||||||||
14888 | isOverflowingIntegerType(Context, Input.get()->getType()); | ||||||||
14889 | Input = UsualUnaryConversions(Input.get()); | ||||||||
14890 | if (Input.isInvalid()) return ExprError(); | ||||||||
14891 | // Unary plus and minus require promoting an operand of half vector to a | ||||||||
14892 | // float vector and truncating the result back to a half vector. For now, we | ||||||||
14893 | // do this only when HalfArgsAndReturns is set (that is, when the target is | ||||||||
14894 | // arm or arm64). | ||||||||
14895 | ConvertHalfVec = needsConversionOfHalfVec(true, Context, Input.get()); | ||||||||
14896 | |||||||||
14897 | // If the operand is a half vector, promote it to a float vector. | ||||||||
14898 | if (ConvertHalfVec) | ||||||||
14899 | Input = convertVector(Input.get(), Context.FloatTy, *this); | ||||||||
14900 | resultType = Input.get()->getType(); | ||||||||
14901 | if (resultType->isDependentType()) | ||||||||
14902 | break; | ||||||||
14903 | if (resultType->isArithmeticType()) // C99 6.5.3.3p1 | ||||||||
14904 | break; | ||||||||
14905 | else if (resultType->isVectorType() && | ||||||||
14906 | // The z vector extensions don't allow + or - with bool vectors. | ||||||||
14907 | (!Context.getLangOpts().ZVector || | ||||||||
14908 | resultType->castAs<VectorType>()->getVectorKind() != | ||||||||
14909 | VectorType::AltiVecBool)) | ||||||||
14910 | break; | ||||||||
14911 | else if (getLangOpts().CPlusPlus && // C++ [expr.unary.op]p6 | ||||||||
14912 | Opc == UO_Plus && | ||||||||
14913 | resultType->isPointerType()) | ||||||||
14914 | break; | ||||||||
14915 | |||||||||
14916 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14917 | << resultType << Input.get()->getSourceRange()); | ||||||||
14918 | |||||||||
14919 | case UO_Not: // bitwise complement | ||||||||
14920 | Input = UsualUnaryConversions(Input.get()); | ||||||||
14921 | if (Input.isInvalid()) | ||||||||
14922 | return ExprError(); | ||||||||
14923 | resultType = Input.get()->getType(); | ||||||||
14924 | if (resultType->isDependentType()) | ||||||||
14925 | break; | ||||||||
14926 | // C99 6.5.3.3p1. We allow complex int and float as a GCC extension. | ||||||||
14927 | if (resultType->isComplexType() || resultType->isComplexIntegerType()) | ||||||||
14928 | // C99 does not support '~' for complex conjugation. | ||||||||
14929 | Diag(OpLoc, diag::ext_integer_complement_complex) | ||||||||
14930 | << resultType << Input.get()->getSourceRange(); | ||||||||
14931 | else if (resultType->hasIntegerRepresentation()) | ||||||||
14932 | break; | ||||||||
14933 | else if (resultType->isExtVectorType() && Context.getLangOpts().OpenCL) { | ||||||||
14934 | // OpenCL v1.1 s6.3.f: The bitwise operator not (~) does not operate | ||||||||
14935 | // on vector float types. | ||||||||
14936 | QualType T = resultType->castAs<ExtVectorType>()->getElementType(); | ||||||||
14937 | if (!T->isIntegerType()) | ||||||||
14938 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14939 | << resultType << Input.get()->getSourceRange()); | ||||||||
14940 | } else { | ||||||||
14941 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14942 | << resultType << Input.get()->getSourceRange()); | ||||||||
14943 | } | ||||||||
14944 | break; | ||||||||
14945 | |||||||||
14946 | case UO_LNot: // logical negation | ||||||||
14947 | // Unlike +/-/~, integer promotions aren't done here (C99 6.5.3.3p5). | ||||||||
14948 | Input = DefaultFunctionArrayLvalueConversion(Input.get()); | ||||||||
14949 | if (Input.isInvalid()) return ExprError(); | ||||||||
14950 | resultType = Input.get()->getType(); | ||||||||
14951 | |||||||||
14952 | // Though we still have to promote half FP to float... | ||||||||
14953 | if (resultType->isHalfType() && !Context.getLangOpts().NativeHalfType) { | ||||||||
14954 | Input = ImpCastExprToType(Input.get(), Context.FloatTy, CK_FloatingCast).get(); | ||||||||
14955 | resultType = Context.FloatTy; | ||||||||
14956 | } | ||||||||
14957 | |||||||||
14958 | if (resultType->isDependentType()) | ||||||||
14959 | break; | ||||||||
14960 | if (resultType->isScalarType() && !isScopedEnumerationType(resultType)) { | ||||||||
14961 | // C99 6.5.3.3p1: ok, fallthrough; | ||||||||
14962 | if (Context.getLangOpts().CPlusPlus) { | ||||||||
14963 | // C++03 [expr.unary.op]p8, C++0x [expr.unary.op]p9: | ||||||||
14964 | // operand contextually converted to bool. | ||||||||
14965 | Input = ImpCastExprToType(Input.get(), Context.BoolTy, | ||||||||
14966 | ScalarTypeToBooleanCastKind(resultType)); | ||||||||
14967 | } else if (Context.getLangOpts().OpenCL && | ||||||||
14968 | Context.getLangOpts().OpenCLVersion < 120) { | ||||||||
14969 | // OpenCL v1.1 6.3.h: The logical operator not (!) does not | ||||||||
14970 | // operate on scalar float types. | ||||||||
14971 | if (!resultType->isIntegerType() && !resultType->isPointerType()) | ||||||||
14972 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14973 | << resultType << Input.get()->getSourceRange()); | ||||||||
14974 | } | ||||||||
14975 | } else if (resultType->isExtVectorType()) { | ||||||||
14976 | if (Context.getLangOpts().OpenCL && | ||||||||
14977 | Context.getLangOpts().OpenCLVersion < 120 && | ||||||||
14978 | !Context.getLangOpts().OpenCLCPlusPlus) { | ||||||||
14979 | // OpenCL v1.1 6.3.h: The logical operator not (!) does not | ||||||||
14980 | // operate on vector float types. | ||||||||
14981 | QualType T = resultType->castAs<ExtVectorType>()->getElementType(); | ||||||||
14982 | if (!T->isIntegerType()) | ||||||||
14983 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14984 | << resultType << Input.get()->getSourceRange()); | ||||||||
14985 | } | ||||||||
14986 | // Vector logical not returns the signed variant of the operand type. | ||||||||
14987 | resultType = GetSignedVectorType(resultType); | ||||||||
14988 | break; | ||||||||
14989 | } else if (Context.getLangOpts().CPlusPlus && resultType->isVectorType()) { | ||||||||
14990 | const VectorType *VTy = resultType->castAs<VectorType>(); | ||||||||
14991 | if (VTy->getVectorKind() != VectorType::GenericVector) | ||||||||
14992 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
14993 | << resultType << Input.get()->getSourceRange()); | ||||||||
14994 | |||||||||
14995 | // Vector logical not returns the signed variant of the operand type. | ||||||||
14996 | resultType = GetSignedVectorType(resultType); | ||||||||
14997 | break; | ||||||||
14998 | } else { | ||||||||
14999 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
15000 | << resultType << Input.get()->getSourceRange()); | ||||||||
15001 | } | ||||||||
15002 | |||||||||
15003 | // LNot always has type int. C99 6.5.3.3p5. | ||||||||
15004 | // In C++, it's bool. C++ 5.3.1p8 | ||||||||
15005 | resultType = Context.getLogicalOperationType(); | ||||||||
15006 | break; | ||||||||
15007 | case UO_Real: | ||||||||
15008 | case UO_Imag: | ||||||||
15009 | resultType = CheckRealImagOperand(*this, Input, OpLoc, Opc == UO_Real); | ||||||||
15010 | // _Real maps ordinary l-values into ordinary l-values. _Imag maps ordinary | ||||||||
15011 | // complex l-values to ordinary l-values and all other values to r-values. | ||||||||
15012 | if (Input.isInvalid()) return ExprError(); | ||||||||
15013 | if (Opc == UO_Real || Input.get()->getType()->isAnyComplexType()) { | ||||||||
15014 | if (Input.get()->isGLValue() && | ||||||||
15015 | Input.get()->getObjectKind() == OK_Ordinary) | ||||||||
15016 | VK = Input.get()->getValueKind(); | ||||||||
15017 | } else if (!getLangOpts().CPlusPlus) { | ||||||||
15018 | // In C, a volatile scalar is read by __imag. In C++, it is not. | ||||||||
15019 | Input = DefaultLvalueConversion(Input.get()); | ||||||||
15020 | } | ||||||||
15021 | break; | ||||||||
15022 | case UO_Extension: | ||||||||
15023 | resultType = Input.get()->getType(); | ||||||||
15024 | VK = Input.get()->getValueKind(); | ||||||||
15025 | OK = Input.get()->getObjectKind(); | ||||||||
15026 | break; | ||||||||
15027 | case UO_Coawait: | ||||||||
15028 | // It's unnecessary to represent the pass-through operator co_await in the | ||||||||
15029 | // AST; just return the input expression instead. | ||||||||
15030 | assert(!Input.get()->getType()->isDependentType() &&(static_cast <bool> (!Input.get()->getType()->isDependentType () && "the co_await expression must be non-dependant before " "building operator co_await") ? void (0) : __assert_fail ("!Input.get()->getType()->isDependentType() && \"the co_await expression must be non-dependant before \" \"building operator co_await\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15032, __extension__ __PRETTY_FUNCTION__)) | ||||||||
15031 | "the co_await expression must be non-dependant before "(static_cast <bool> (!Input.get()->getType()->isDependentType () && "the co_await expression must be non-dependant before " "building operator co_await") ? void (0) : __assert_fail ("!Input.get()->getType()->isDependentType() && \"the co_await expression must be non-dependant before \" \"building operator co_await\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15032, __extension__ __PRETTY_FUNCTION__)) | ||||||||
15032 | "building operator co_await")(static_cast <bool> (!Input.get()->getType()->isDependentType () && "the co_await expression must be non-dependant before " "building operator co_await") ? void (0) : __assert_fail ("!Input.get()->getType()->isDependentType() && \"the co_await expression must be non-dependant before \" \"building operator co_await\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15032, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15033 | return Input; | ||||||||
15034 | } | ||||||||
15035 | if (resultType.isNull() || Input.isInvalid()) | ||||||||
15036 | return ExprError(); | ||||||||
15037 | |||||||||
15038 | // Check for array bounds violations in the operand of the UnaryOperator, | ||||||||
15039 | // except for the '*' and '&' operators that have to be handled specially | ||||||||
15040 | // by CheckArrayAccess (as there are special cases like &array[arraysize] | ||||||||
15041 | // that are explicitly defined as valid by the standard). | ||||||||
15042 | if (Opc != UO_AddrOf && Opc != UO_Deref) | ||||||||
15043 | CheckArrayAccess(Input.get()); | ||||||||
15044 | |||||||||
15045 | auto *UO = | ||||||||
15046 | UnaryOperator::Create(Context, Input.get(), Opc, resultType, VK, OK, | ||||||||
15047 | OpLoc, CanOverflow, CurFPFeatureOverrides()); | ||||||||
15048 | |||||||||
15049 | if (Opc == UO_Deref && UO->getType()->hasAttr(attr::NoDeref) && | ||||||||
15050 | !isa<ArrayType>(UO->getType().getDesugaredType(Context)) && | ||||||||
15051 | !isUnevaluatedContext()) | ||||||||
15052 | ExprEvalContexts.back().PossibleDerefs.insert(UO); | ||||||||
15053 | |||||||||
15054 | // Convert the result back to a half vector. | ||||||||
15055 | if (ConvertHalfVec) | ||||||||
15056 | return convertVector(UO, Context.HalfTy, *this); | ||||||||
15057 | return UO; | ||||||||
15058 | } | ||||||||
15059 | |||||||||
15060 | /// Determine whether the given expression is a qualified member | ||||||||
15061 | /// access expression, of a form that could be turned into a pointer to member | ||||||||
15062 | /// with the address-of operator. | ||||||||
15063 | bool Sema::isQualifiedMemberAccess(Expr *E) { | ||||||||
15064 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||||||
15065 | if (!DRE->getQualifier()) | ||||||||
15066 | return false; | ||||||||
15067 | |||||||||
15068 | ValueDecl *VD = DRE->getDecl(); | ||||||||
15069 | if (!VD->isCXXClassMember()) | ||||||||
15070 | return false; | ||||||||
15071 | |||||||||
15072 | if (isa<FieldDecl>(VD) || isa<IndirectFieldDecl>(VD)) | ||||||||
15073 | return true; | ||||||||
15074 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(VD)) | ||||||||
15075 | return Method->isInstance(); | ||||||||
15076 | |||||||||
15077 | return false; | ||||||||
15078 | } | ||||||||
15079 | |||||||||
15080 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(E)) { | ||||||||
15081 | if (!ULE->getQualifier()) | ||||||||
15082 | return false; | ||||||||
15083 | |||||||||
15084 | for (NamedDecl *D : ULE->decls()) { | ||||||||
15085 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { | ||||||||
15086 | if (Method->isInstance()) | ||||||||
15087 | return true; | ||||||||
15088 | } else { | ||||||||
15089 | // Overload set does not contain methods. | ||||||||
15090 | break; | ||||||||
15091 | } | ||||||||
15092 | } | ||||||||
15093 | |||||||||
15094 | return false; | ||||||||
15095 | } | ||||||||
15096 | |||||||||
15097 | return false; | ||||||||
15098 | } | ||||||||
15099 | |||||||||
15100 | ExprResult Sema::BuildUnaryOp(Scope *S, SourceLocation OpLoc, | ||||||||
15101 | UnaryOperatorKind Opc, Expr *Input) { | ||||||||
15102 | // First things first: handle placeholders so that the | ||||||||
15103 | // overloaded-operator check considers the right type. | ||||||||
15104 | if (const BuiltinType *pty = Input->getType()->getAsPlaceholderType()) { | ||||||||
15105 | // Increment and decrement of pseudo-object references. | ||||||||
15106 | if (pty->getKind() == BuiltinType::PseudoObject && | ||||||||
15107 | UnaryOperator::isIncrementDecrementOp(Opc)) | ||||||||
15108 | return checkPseudoObjectIncDec(S, OpLoc, Opc, Input); | ||||||||
15109 | |||||||||
15110 | // extension is always a builtin operator. | ||||||||
15111 | if (Opc == UO_Extension) | ||||||||
15112 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||||||
15113 | |||||||||
15114 | // & gets special logic for several kinds of placeholder. | ||||||||
15115 | // The builtin code knows what to do. | ||||||||
15116 | if (Opc == UO_AddrOf && | ||||||||
15117 | (pty->getKind() == BuiltinType::Overload || | ||||||||
15118 | pty->getKind() == BuiltinType::UnknownAny || | ||||||||
15119 | pty->getKind() == BuiltinType::BoundMember)) | ||||||||
15120 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||||||
15121 | |||||||||
15122 | // Anything else needs to be handled now. | ||||||||
15123 | ExprResult Result = CheckPlaceholderExpr(Input); | ||||||||
15124 | if (Result.isInvalid()) return ExprError(); | ||||||||
15125 | Input = Result.get(); | ||||||||
15126 | } | ||||||||
15127 | |||||||||
15128 | if (getLangOpts().CPlusPlus && Input->getType()->isOverloadableType() && | ||||||||
15129 | UnaryOperator::getOverloadedOperator(Opc) != OO_None && | ||||||||
15130 | !(Opc == UO_AddrOf && isQualifiedMemberAccess(Input))) { | ||||||||
15131 | // Find all of the overloaded operators visible from this point. | ||||||||
15132 | UnresolvedSet<16> Functions; | ||||||||
15133 | OverloadedOperatorKind OverOp = UnaryOperator::getOverloadedOperator(Opc); | ||||||||
15134 | if (S && OverOp != OO_None) | ||||||||
15135 | LookupOverloadedOperatorName(OverOp, S, Functions); | ||||||||
15136 | |||||||||
15137 | return CreateOverloadedUnaryOp(OpLoc, Opc, Functions, Input); | ||||||||
15138 | } | ||||||||
15139 | |||||||||
15140 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||||||
15141 | } | ||||||||
15142 | |||||||||
15143 | // Unary Operators. 'Tok' is the token for the operator. | ||||||||
15144 | ExprResult Sema::ActOnUnaryOp(Scope *S, SourceLocation OpLoc, | ||||||||
15145 | tok::TokenKind Op, Expr *Input) { | ||||||||
15146 | return BuildUnaryOp(S, OpLoc, ConvertTokenKindToUnaryOpcode(Op), Input); | ||||||||
15147 | } | ||||||||
15148 | |||||||||
15149 | /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". | ||||||||
15150 | ExprResult Sema::ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, | ||||||||
15151 | LabelDecl *TheDecl) { | ||||||||
15152 | TheDecl->markUsed(Context); | ||||||||
15153 | // Create the AST node. The address of a label always has type 'void*'. | ||||||||
15154 | return new (Context) AddrLabelExpr(OpLoc, LabLoc, TheDecl, | ||||||||
15155 | Context.getPointerType(Context.VoidTy)); | ||||||||
15156 | } | ||||||||
15157 | |||||||||
15158 | void Sema::ActOnStartStmtExpr() { | ||||||||
15159 | PushExpressionEvaluationContext(ExprEvalContexts.back().Context); | ||||||||
15160 | } | ||||||||
15161 | |||||||||
15162 | void Sema::ActOnStmtExprError() { | ||||||||
15163 | // Note that function is also called by TreeTransform when leaving a | ||||||||
15164 | // StmtExpr scope without rebuilding anything. | ||||||||
15165 | |||||||||
15166 | DiscardCleanupsInEvaluationContext(); | ||||||||
15167 | PopExpressionEvaluationContext(); | ||||||||
15168 | } | ||||||||
15169 | |||||||||
15170 | ExprResult Sema::ActOnStmtExpr(Scope *S, SourceLocation LPLoc, Stmt *SubStmt, | ||||||||
15171 | SourceLocation RPLoc) { | ||||||||
15172 | return BuildStmtExpr(LPLoc, SubStmt, RPLoc, getTemplateDepth(S)); | ||||||||
15173 | } | ||||||||
15174 | |||||||||
15175 | ExprResult Sema::BuildStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, | ||||||||
15176 | SourceLocation RPLoc, unsigned TemplateDepth) { | ||||||||
15177 | assert(SubStmt && isa<CompoundStmt>(SubStmt) && "Invalid action invocation!")(static_cast <bool> (SubStmt && isa<CompoundStmt >(SubStmt) && "Invalid action invocation!") ? void (0) : __assert_fail ("SubStmt && isa<CompoundStmt>(SubStmt) && \"Invalid action invocation!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15177, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15178 | CompoundStmt *Compound = cast<CompoundStmt>(SubStmt); | ||||||||
15179 | |||||||||
15180 | if (hasAnyUnrecoverableErrorsInThisFunction()) | ||||||||
15181 | DiscardCleanupsInEvaluationContext(); | ||||||||
15182 | assert(!Cleanup.exprNeedsCleanups() &&(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within StmtExpr not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within StmtExpr not correctly bound!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15183, __extension__ __PRETTY_FUNCTION__)) | ||||||||
15183 | "cleanups within StmtExpr not correctly bound!")(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within StmtExpr not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within StmtExpr not correctly bound!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15183, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15184 | PopExpressionEvaluationContext(); | ||||||||
15185 | |||||||||
15186 | // FIXME: there are a variety of strange constraints to enforce here, for | ||||||||
15187 | // example, it is not possible to goto into a stmt expression apparently. | ||||||||
15188 | // More semantic analysis is needed. | ||||||||
15189 | |||||||||
15190 | // If there are sub-stmts in the compound stmt, take the type of the last one | ||||||||
15191 | // as the type of the stmtexpr. | ||||||||
15192 | QualType Ty = Context.VoidTy; | ||||||||
15193 | bool StmtExprMayBindToTemp = false; | ||||||||
15194 | if (!Compound->body_empty()) { | ||||||||
15195 | // For GCC compatibility we get the last Stmt excluding trailing NullStmts. | ||||||||
15196 | if (const auto *LastStmt = | ||||||||
15197 | dyn_cast<ValueStmt>(Compound->getStmtExprResult())) { | ||||||||
15198 | if (const Expr *Value = LastStmt->getExprStmt()) { | ||||||||
15199 | StmtExprMayBindToTemp = true; | ||||||||
15200 | Ty = Value->getType(); | ||||||||
15201 | } | ||||||||
15202 | } | ||||||||
15203 | } | ||||||||
15204 | |||||||||
15205 | // FIXME: Check that expression type is complete/non-abstract; statement | ||||||||
15206 | // expressions are not lvalues. | ||||||||
15207 | Expr *ResStmtExpr = | ||||||||
15208 | new (Context) StmtExpr(Compound, Ty, LPLoc, RPLoc, TemplateDepth); | ||||||||
15209 | if (StmtExprMayBindToTemp) | ||||||||
15210 | return MaybeBindToTemporary(ResStmtExpr); | ||||||||
15211 | return ResStmtExpr; | ||||||||
15212 | } | ||||||||
15213 | |||||||||
15214 | ExprResult Sema::ActOnStmtExprResult(ExprResult ER) { | ||||||||
15215 | if (ER.isInvalid()) | ||||||||
15216 | return ExprError(); | ||||||||
15217 | |||||||||
15218 | // Do function/array conversion on the last expression, but not | ||||||||
15219 | // lvalue-to-rvalue. However, initialize an unqualified type. | ||||||||
15220 | ER = DefaultFunctionArrayConversion(ER.get()); | ||||||||
15221 | if (ER.isInvalid()) | ||||||||
15222 | return ExprError(); | ||||||||
15223 | Expr *E = ER.get(); | ||||||||
15224 | |||||||||
15225 | if (E->isTypeDependent()) | ||||||||
15226 | return E; | ||||||||
15227 | |||||||||
15228 | // In ARC, if the final expression ends in a consume, splice | ||||||||
15229 | // the consume out and bind it later. In the alternate case | ||||||||
15230 | // (when dealing with a retainable type), the result | ||||||||
15231 | // initialization will create a produce. In both cases the | ||||||||
15232 | // result will be +1, and we'll need to balance that out with | ||||||||
15233 | // a bind. | ||||||||
15234 | auto *Cast = dyn_cast<ImplicitCastExpr>(E); | ||||||||
15235 | if (Cast && Cast->getCastKind() == CK_ARCConsumeObject) | ||||||||
15236 | return Cast->getSubExpr(); | ||||||||
15237 | |||||||||
15238 | // FIXME: Provide a better location for the initialization. | ||||||||
15239 | return PerformCopyInitialization( | ||||||||
15240 | InitializedEntity::InitializeStmtExprResult( | ||||||||
15241 | E->getBeginLoc(), E->getType().getUnqualifiedType()), | ||||||||
15242 | SourceLocation(), E); | ||||||||
15243 | } | ||||||||
15244 | |||||||||
15245 | ExprResult Sema::BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, | ||||||||
15246 | TypeSourceInfo *TInfo, | ||||||||
15247 | ArrayRef<OffsetOfComponent> Components, | ||||||||
15248 | SourceLocation RParenLoc) { | ||||||||
15249 | QualType ArgTy = TInfo->getType(); | ||||||||
15250 | bool Dependent = ArgTy->isDependentType(); | ||||||||
15251 | SourceRange TypeRange = TInfo->getTypeLoc().getLocalSourceRange(); | ||||||||
15252 | |||||||||
15253 | // We must have at least one component that refers to the type, and the first | ||||||||
15254 | // one is known to be a field designator. Verify that the ArgTy represents | ||||||||
15255 | // a struct/union/class. | ||||||||
15256 | if (!Dependent && !ArgTy->isRecordType()) | ||||||||
15257 | return ExprError(Diag(BuiltinLoc, diag::err_offsetof_record_type) | ||||||||
15258 | << ArgTy << TypeRange); | ||||||||
15259 | |||||||||
15260 | // Type must be complete per C99 7.17p3 because a declaring a variable | ||||||||
15261 | // with an incomplete type would be ill-formed. | ||||||||
15262 | if (!Dependent | ||||||||
15263 | && RequireCompleteType(BuiltinLoc, ArgTy, | ||||||||
15264 | diag::err_offsetof_incomplete_type, TypeRange)) | ||||||||
15265 | return ExprError(); | ||||||||
15266 | |||||||||
15267 | bool DidWarnAboutNonPOD = false; | ||||||||
15268 | QualType CurrentType = ArgTy; | ||||||||
15269 | SmallVector<OffsetOfNode, 4> Comps; | ||||||||
15270 | SmallVector<Expr*, 4> Exprs; | ||||||||
15271 | for (const OffsetOfComponent &OC : Components) { | ||||||||
15272 | if (OC.isBrackets) { | ||||||||
15273 | // Offset of an array sub-field. TODO: Should we allow vector elements? | ||||||||
15274 | if (!CurrentType->isDependentType()) { | ||||||||
15275 | const ArrayType *AT = Context.getAsArrayType(CurrentType); | ||||||||
15276 | if(!AT) | ||||||||
15277 | return ExprError(Diag(OC.LocEnd, diag::err_offsetof_array_type) | ||||||||
15278 | << CurrentType); | ||||||||
15279 | CurrentType = AT->getElementType(); | ||||||||
15280 | } else | ||||||||
15281 | CurrentType = Context.DependentTy; | ||||||||
15282 | |||||||||
15283 | ExprResult IdxRval = DefaultLvalueConversion(static_cast<Expr*>(OC.U.E)); | ||||||||
15284 | if (IdxRval.isInvalid()) | ||||||||
15285 | return ExprError(); | ||||||||
15286 | Expr *Idx = IdxRval.get(); | ||||||||
15287 | |||||||||
15288 | // The expression must be an integral expression. | ||||||||
15289 | // FIXME: An integral constant expression? | ||||||||
15290 | if (!Idx->isTypeDependent() && !Idx->isValueDependent() && | ||||||||
15291 | !Idx->getType()->isIntegerType()) | ||||||||
15292 | return ExprError( | ||||||||
15293 | Diag(Idx->getBeginLoc(), diag::err_typecheck_subscript_not_integer) | ||||||||
15294 | << Idx->getSourceRange()); | ||||||||
15295 | |||||||||
15296 | // Record this array index. | ||||||||
15297 | Comps.push_back(OffsetOfNode(OC.LocStart, Exprs.size(), OC.LocEnd)); | ||||||||
15298 | Exprs.push_back(Idx); | ||||||||
15299 | continue; | ||||||||
15300 | } | ||||||||
15301 | |||||||||
15302 | // Offset of a field. | ||||||||
15303 | if (CurrentType->isDependentType()) { | ||||||||
15304 | // We have the offset of a field, but we can't look into the dependent | ||||||||
15305 | // type. Just record the identifier of the field. | ||||||||
15306 | Comps.push_back(OffsetOfNode(OC.LocStart, OC.U.IdentInfo, OC.LocEnd)); | ||||||||
15307 | CurrentType = Context.DependentTy; | ||||||||
15308 | continue; | ||||||||
15309 | } | ||||||||
15310 | |||||||||
15311 | // We need to have a complete type to look into. | ||||||||
15312 | if (RequireCompleteType(OC.LocStart, CurrentType, | ||||||||
15313 | diag::err_offsetof_incomplete_type)) | ||||||||
15314 | return ExprError(); | ||||||||
15315 | |||||||||
15316 | // Look for the designated field. | ||||||||
15317 | const RecordType *RC = CurrentType->getAs<RecordType>(); | ||||||||
15318 | if (!RC) | ||||||||
15319 | return ExprError(Diag(OC.LocEnd, diag::err_offsetof_record_type) | ||||||||
15320 | << CurrentType); | ||||||||
15321 | RecordDecl *RD = RC->getDecl(); | ||||||||
15322 | |||||||||
15323 | // C++ [lib.support.types]p5: | ||||||||
15324 | // The macro offsetof accepts a restricted set of type arguments in this | ||||||||
15325 | // International Standard. type shall be a POD structure or a POD union | ||||||||
15326 | // (clause 9). | ||||||||
15327 | // C++11 [support.types]p4: | ||||||||
15328 | // If type is not a standard-layout class (Clause 9), the results are | ||||||||
15329 | // undefined. | ||||||||
15330 | if (CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) { | ||||||||
15331 | bool IsSafe = LangOpts.CPlusPlus11? CRD->isStandardLayout() : CRD->isPOD(); | ||||||||
15332 | unsigned DiagID = | ||||||||
15333 | LangOpts.CPlusPlus11? diag::ext_offsetof_non_standardlayout_type | ||||||||
15334 | : diag::ext_offsetof_non_pod_type; | ||||||||
15335 | |||||||||
15336 | if (!IsSafe && !DidWarnAboutNonPOD && | ||||||||
15337 | DiagRuntimeBehavior(BuiltinLoc, nullptr, | ||||||||
15338 | PDiag(DiagID) | ||||||||
15339 | << SourceRange(Components[0].LocStart, OC.LocEnd) | ||||||||
15340 | << CurrentType)) | ||||||||
15341 | DidWarnAboutNonPOD = true; | ||||||||
15342 | } | ||||||||
15343 | |||||||||
15344 | // Look for the field. | ||||||||
15345 | LookupResult R(*this, OC.U.IdentInfo, OC.LocStart, LookupMemberName); | ||||||||
15346 | LookupQualifiedName(R, RD); | ||||||||
15347 | FieldDecl *MemberDecl = R.getAsSingle<FieldDecl>(); | ||||||||
15348 | IndirectFieldDecl *IndirectMemberDecl = nullptr; | ||||||||
15349 | if (!MemberDecl) { | ||||||||
15350 | if ((IndirectMemberDecl = R.getAsSingle<IndirectFieldDecl>())) | ||||||||
15351 | MemberDecl = IndirectMemberDecl->getAnonField(); | ||||||||
15352 | } | ||||||||
15353 | |||||||||
15354 | if (!MemberDecl) | ||||||||
15355 | return ExprError(Diag(BuiltinLoc, diag::err_no_member) | ||||||||
15356 | << OC.U.IdentInfo << RD << SourceRange(OC.LocStart, | ||||||||
15357 | OC.LocEnd)); | ||||||||
15358 | |||||||||
15359 | // C99 7.17p3: | ||||||||
15360 | // (If the specified member is a bit-field, the behavior is undefined.) | ||||||||
15361 | // | ||||||||
15362 | // We diagnose this as an error. | ||||||||
15363 | if (MemberDecl->isBitField()) { | ||||||||
15364 | Diag(OC.LocEnd, diag::err_offsetof_bitfield) | ||||||||
15365 | << MemberDecl->getDeclName() | ||||||||
15366 | << SourceRange(BuiltinLoc, RParenLoc); | ||||||||
15367 | Diag(MemberDecl->getLocation(), diag::note_bitfield_decl); | ||||||||
15368 | return ExprError(); | ||||||||
15369 | } | ||||||||
15370 | |||||||||
15371 | RecordDecl *Parent = MemberDecl->getParent(); | ||||||||
15372 | if (IndirectMemberDecl) | ||||||||
15373 | Parent = cast<RecordDecl>(IndirectMemberDecl->getDeclContext()); | ||||||||
15374 | |||||||||
15375 | // If the member was found in a base class, introduce OffsetOfNodes for | ||||||||
15376 | // the base class indirections. | ||||||||
15377 | CXXBasePaths Paths; | ||||||||
15378 | if (IsDerivedFrom(OC.LocStart, CurrentType, Context.getTypeDeclType(Parent), | ||||||||
15379 | Paths)) { | ||||||||
15380 | if (Paths.getDetectedVirtual()) { | ||||||||
15381 | Diag(OC.LocEnd, diag::err_offsetof_field_of_virtual_base) | ||||||||
15382 | << MemberDecl->getDeclName() | ||||||||
15383 | << SourceRange(BuiltinLoc, RParenLoc); | ||||||||
15384 | return ExprError(); | ||||||||
15385 | } | ||||||||
15386 | |||||||||
15387 | CXXBasePath &Path = Paths.front(); | ||||||||
15388 | for (const CXXBasePathElement &B : Path) | ||||||||
15389 | Comps.push_back(OffsetOfNode(B.Base)); | ||||||||
15390 | } | ||||||||
15391 | |||||||||
15392 | if (IndirectMemberDecl) { | ||||||||
15393 | for (auto *FI : IndirectMemberDecl->chain()) { | ||||||||
15394 | assert(isa<FieldDecl>(FI))(static_cast <bool> (isa<FieldDecl>(FI)) ? void ( 0) : __assert_fail ("isa<FieldDecl>(FI)", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15394, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15395 | Comps.push_back(OffsetOfNode(OC.LocStart, | ||||||||
15396 | cast<FieldDecl>(FI), OC.LocEnd)); | ||||||||
15397 | } | ||||||||
15398 | } else | ||||||||
15399 | Comps.push_back(OffsetOfNode(OC.LocStart, MemberDecl, OC.LocEnd)); | ||||||||
15400 | |||||||||
15401 | CurrentType = MemberDecl->getType().getNonReferenceType(); | ||||||||
15402 | } | ||||||||
15403 | |||||||||
15404 | return OffsetOfExpr::Create(Context, Context.getSizeType(), BuiltinLoc, TInfo, | ||||||||
15405 | Comps, Exprs, RParenLoc); | ||||||||
15406 | } | ||||||||
15407 | |||||||||
15408 | ExprResult Sema::ActOnBuiltinOffsetOf(Scope *S, | ||||||||
15409 | SourceLocation BuiltinLoc, | ||||||||
15410 | SourceLocation TypeLoc, | ||||||||
15411 | ParsedType ParsedArgTy, | ||||||||
15412 | ArrayRef<OffsetOfComponent> Components, | ||||||||
15413 | SourceLocation RParenLoc) { | ||||||||
15414 | |||||||||
15415 | TypeSourceInfo *ArgTInfo; | ||||||||
15416 | QualType ArgTy = GetTypeFromParser(ParsedArgTy, &ArgTInfo); | ||||||||
15417 | if (ArgTy.isNull()) | ||||||||
15418 | return ExprError(); | ||||||||
15419 | |||||||||
15420 | if (!ArgTInfo) | ||||||||
15421 | ArgTInfo = Context.getTrivialTypeSourceInfo(ArgTy, TypeLoc); | ||||||||
15422 | |||||||||
15423 | return BuildBuiltinOffsetOf(BuiltinLoc, ArgTInfo, Components, RParenLoc); | ||||||||
15424 | } | ||||||||
15425 | |||||||||
15426 | |||||||||
15427 | ExprResult Sema::ActOnChooseExpr(SourceLocation BuiltinLoc, | ||||||||
15428 | Expr *CondExpr, | ||||||||
15429 | Expr *LHSExpr, Expr *RHSExpr, | ||||||||
15430 | SourceLocation RPLoc) { | ||||||||
15431 | assert((CondExpr && LHSExpr && RHSExpr) && "Missing type argument(s)")(static_cast <bool> ((CondExpr && LHSExpr && RHSExpr) && "Missing type argument(s)") ? void (0) : __assert_fail ("(CondExpr && LHSExpr && RHSExpr) && \"Missing type argument(s)\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15431, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15432 | |||||||||
15433 | ExprValueKind VK = VK_PRValue; | ||||||||
15434 | ExprObjectKind OK = OK_Ordinary; | ||||||||
15435 | QualType resType; | ||||||||
15436 | bool CondIsTrue = false; | ||||||||
15437 | if (CondExpr->isTypeDependent() || CondExpr->isValueDependent()) { | ||||||||
15438 | resType = Context.DependentTy; | ||||||||
15439 | } else { | ||||||||
15440 | // The conditional expression is required to be a constant expression. | ||||||||
15441 | llvm::APSInt condEval(32); | ||||||||
15442 | ExprResult CondICE = VerifyIntegerConstantExpression( | ||||||||
15443 | CondExpr, &condEval, diag::err_typecheck_choose_expr_requires_constant); | ||||||||
15444 | if (CondICE.isInvalid()) | ||||||||
15445 | return ExprError(); | ||||||||
15446 | CondExpr = CondICE.get(); | ||||||||
15447 | CondIsTrue = condEval.getZExtValue(); | ||||||||
15448 | |||||||||
15449 | // If the condition is > zero, then the AST type is the same as the LHSExpr. | ||||||||
15450 | Expr *ActiveExpr = CondIsTrue ? LHSExpr : RHSExpr; | ||||||||
15451 | |||||||||
15452 | resType = ActiveExpr->getType(); | ||||||||
15453 | VK = ActiveExpr->getValueKind(); | ||||||||
15454 | OK = ActiveExpr->getObjectKind(); | ||||||||
15455 | } | ||||||||
15456 | |||||||||
15457 | return new (Context) ChooseExpr(BuiltinLoc, CondExpr, LHSExpr, RHSExpr, | ||||||||
15458 | resType, VK, OK, RPLoc, CondIsTrue); | ||||||||
15459 | } | ||||||||
15460 | |||||||||
15461 | //===----------------------------------------------------------------------===// | ||||||||
15462 | // Clang Extensions. | ||||||||
15463 | //===----------------------------------------------------------------------===// | ||||||||
15464 | |||||||||
15465 | /// ActOnBlockStart - This callback is invoked when a block literal is started. | ||||||||
15466 | void Sema::ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope) { | ||||||||
15467 | BlockDecl *Block = BlockDecl::Create(Context, CurContext, CaretLoc); | ||||||||
15468 | |||||||||
15469 | if (LangOpts.CPlusPlus) { | ||||||||
15470 | MangleNumberingContext *MCtx; | ||||||||
15471 | Decl *ManglingContextDecl; | ||||||||
15472 | std::tie(MCtx, ManglingContextDecl) = | ||||||||
15473 | getCurrentMangleNumberContext(Block->getDeclContext()); | ||||||||
15474 | if (MCtx) { | ||||||||
15475 | unsigned ManglingNumber = MCtx->getManglingNumber(Block); | ||||||||
15476 | Block->setBlockMangling(ManglingNumber, ManglingContextDecl); | ||||||||
15477 | } | ||||||||
15478 | } | ||||||||
15479 | |||||||||
15480 | PushBlockScope(CurScope, Block); | ||||||||
15481 | CurContext->addDecl(Block); | ||||||||
15482 | if (CurScope) | ||||||||
15483 | PushDeclContext(CurScope, Block); | ||||||||
15484 | else | ||||||||
15485 | CurContext = Block; | ||||||||
15486 | |||||||||
15487 | getCurBlock()->HasImplicitReturnType = true; | ||||||||
15488 | |||||||||
15489 | // Enter a new evaluation context to insulate the block from any | ||||||||
15490 | // cleanups from the enclosing full-expression. | ||||||||
15491 | PushExpressionEvaluationContext( | ||||||||
15492 | ExpressionEvaluationContext::PotentiallyEvaluated); | ||||||||
15493 | } | ||||||||
15494 | |||||||||
15495 | void Sema::ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo, | ||||||||
15496 | Scope *CurScope) { | ||||||||
15497 | assert(ParamInfo.getIdentifier() == nullptr &&(static_cast <bool> (ParamInfo.getIdentifier() == nullptr && "block-id should have no identifier!") ? void (0) : __assert_fail ("ParamInfo.getIdentifier() == nullptr && \"block-id should have no identifier!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15498, __extension__ __PRETTY_FUNCTION__)) | ||||||||
15498 | "block-id should have no identifier!")(static_cast <bool> (ParamInfo.getIdentifier() == nullptr && "block-id should have no identifier!") ? void (0) : __assert_fail ("ParamInfo.getIdentifier() == nullptr && \"block-id should have no identifier!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15498, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15499 | assert(ParamInfo.getContext() == DeclaratorContext::BlockLiteral)(static_cast <bool> (ParamInfo.getContext() == DeclaratorContext ::BlockLiteral) ? void (0) : __assert_fail ("ParamInfo.getContext() == DeclaratorContext::BlockLiteral" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15499, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15500 | BlockScopeInfo *CurBlock = getCurBlock(); | ||||||||
15501 | |||||||||
15502 | TypeSourceInfo *Sig = GetTypeForDeclarator(ParamInfo, CurScope); | ||||||||
15503 | QualType T = Sig->getType(); | ||||||||
15504 | |||||||||
15505 | // FIXME: We should allow unexpanded parameter packs here, but that would, | ||||||||
15506 | // in turn, make the block expression contain unexpanded parameter packs. | ||||||||
15507 | if (DiagnoseUnexpandedParameterPack(CaretLoc, Sig, UPPC_Block)) { | ||||||||
15508 | // Drop the parameters. | ||||||||
15509 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
15510 | EPI.HasTrailingReturn = false; | ||||||||
15511 | EPI.TypeQuals.addConst(); | ||||||||
15512 | T = Context.getFunctionType(Context.DependentTy, None, EPI); | ||||||||
15513 | Sig = Context.getTrivialTypeSourceInfo(T); | ||||||||
15514 | } | ||||||||
15515 | |||||||||
15516 | // GetTypeForDeclarator always produces a function type for a block | ||||||||
15517 | // literal signature. Furthermore, it is always a FunctionProtoType | ||||||||
15518 | // unless the function was written with a typedef. | ||||||||
15519 | assert(T->isFunctionType() &&(static_cast <bool> (T->isFunctionType() && "GetTypeForDeclarator made a non-function block signature" ) ? void (0) : __assert_fail ("T->isFunctionType() && \"GetTypeForDeclarator made a non-function block signature\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15520, __extension__ __PRETTY_FUNCTION__)) | ||||||||
15520 | "GetTypeForDeclarator made a non-function block signature")(static_cast <bool> (T->isFunctionType() && "GetTypeForDeclarator made a non-function block signature" ) ? void (0) : __assert_fail ("T->isFunctionType() && \"GetTypeForDeclarator made a non-function block signature\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15520, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15521 | |||||||||
15522 | // Look for an explicit signature in that function type. | ||||||||
15523 | FunctionProtoTypeLoc ExplicitSignature; | ||||||||
15524 | |||||||||
15525 | if ((ExplicitSignature = Sig->getTypeLoc() | ||||||||
15526 | .getAsAdjusted<FunctionProtoTypeLoc>())) { | ||||||||
15527 | |||||||||
15528 | // Check whether that explicit signature was synthesized by | ||||||||
15529 | // GetTypeForDeclarator. If so, don't save that as part of the | ||||||||
15530 | // written signature. | ||||||||
15531 | if (ExplicitSignature.getLocalRangeBegin() == | ||||||||
15532 | ExplicitSignature.getLocalRangeEnd()) { | ||||||||
15533 | // This would be much cheaper if we stored TypeLocs instead of | ||||||||
15534 | // TypeSourceInfos. | ||||||||
15535 | TypeLoc Result = ExplicitSignature.getReturnLoc(); | ||||||||
15536 | unsigned Size = Result.getFullDataSize(); | ||||||||
15537 | Sig = Context.CreateTypeSourceInfo(Result.getType(), Size); | ||||||||
15538 | Sig->getTypeLoc().initializeFullCopy(Result, Size); | ||||||||
15539 | |||||||||
15540 | ExplicitSignature = FunctionProtoTypeLoc(); | ||||||||
15541 | } | ||||||||
15542 | } | ||||||||
15543 | |||||||||
15544 | CurBlock->TheDecl->setSignatureAsWritten(Sig); | ||||||||
15545 | CurBlock->FunctionType = T; | ||||||||
15546 | |||||||||
15547 | const auto *Fn = T->castAs<FunctionType>(); | ||||||||
15548 | QualType RetTy = Fn->getReturnType(); | ||||||||
15549 | bool isVariadic = | ||||||||
15550 | (isa<FunctionProtoType>(Fn) && cast<FunctionProtoType>(Fn)->isVariadic()); | ||||||||
15551 | |||||||||
15552 | CurBlock->TheDecl->setIsVariadic(isVariadic); | ||||||||
15553 | |||||||||
15554 | // Context.DependentTy is used as a placeholder for a missing block | ||||||||
15555 | // return type. TODO: what should we do with declarators like: | ||||||||
15556 | // ^ * { ... } | ||||||||
15557 | // If the answer is "apply template argument deduction".... | ||||||||
15558 | if (RetTy != Context.DependentTy) { | ||||||||
15559 | CurBlock->ReturnType = RetTy; | ||||||||
15560 | CurBlock->TheDecl->setBlockMissingReturnType(false); | ||||||||
15561 | CurBlock->HasImplicitReturnType = false; | ||||||||
15562 | } | ||||||||
15563 | |||||||||
15564 | // Push block parameters from the declarator if we had them. | ||||||||
15565 | SmallVector<ParmVarDecl*, 8> Params; | ||||||||
15566 | if (ExplicitSignature) { | ||||||||
15567 | for (unsigned I = 0, E = ExplicitSignature.getNumParams(); I != E; ++I) { | ||||||||
15568 | ParmVarDecl *Param = ExplicitSignature.getParam(I); | ||||||||
15569 | if (Param->getIdentifier() == nullptr && !Param->isImplicit() && | ||||||||
15570 | !Param->isInvalidDecl() && !getLangOpts().CPlusPlus) { | ||||||||
15571 | // Diagnose this as an extension in C17 and earlier. | ||||||||
15572 | if (!getLangOpts().C2x) | ||||||||
15573 | Diag(Param->getLocation(), diag::ext_parameter_name_omitted_c2x); | ||||||||
15574 | } | ||||||||
15575 | Params.push_back(Param); | ||||||||
15576 | } | ||||||||
15577 | |||||||||
15578 | // Fake up parameter variables if we have a typedef, like | ||||||||
15579 | // ^ fntype { ... } | ||||||||
15580 | } else if (const FunctionProtoType *Fn = T->getAs<FunctionProtoType>()) { | ||||||||
15581 | for (const auto &I : Fn->param_types()) { | ||||||||
15582 | ParmVarDecl *Param = BuildParmVarDeclForTypedef( | ||||||||
15583 | CurBlock->TheDecl, ParamInfo.getBeginLoc(), I); | ||||||||
15584 | Params.push_back(Param); | ||||||||
15585 | } | ||||||||
15586 | } | ||||||||
15587 | |||||||||
15588 | // Set the parameters on the block decl. | ||||||||
15589 | if (!Params.empty()) { | ||||||||
15590 | CurBlock->TheDecl->setParams(Params); | ||||||||
15591 | CheckParmsForFunctionDef(CurBlock->TheDecl->parameters(), | ||||||||
15592 | /*CheckParameterNames=*/false); | ||||||||
15593 | } | ||||||||
15594 | |||||||||
15595 | // Finally we can process decl attributes. | ||||||||
15596 | ProcessDeclAttributes(CurScope, CurBlock->TheDecl, ParamInfo); | ||||||||
15597 | |||||||||
15598 | // Put the parameter variables in scope. | ||||||||
15599 | for (auto AI : CurBlock->TheDecl->parameters()) { | ||||||||
15600 | AI->setOwningFunction(CurBlock->TheDecl); | ||||||||
15601 | |||||||||
15602 | // If this has an identifier, add it to the scope stack. | ||||||||
15603 | if (AI->getIdentifier()) { | ||||||||
15604 | CheckShadow(CurBlock->TheScope, AI); | ||||||||
15605 | |||||||||
15606 | PushOnScopeChains(AI, CurBlock->TheScope); | ||||||||
15607 | } | ||||||||
15608 | } | ||||||||
15609 | } | ||||||||
15610 | |||||||||
15611 | /// ActOnBlockError - If there is an error parsing a block, this callback | ||||||||
15612 | /// is invoked to pop the information about the block from the action impl. | ||||||||
15613 | void Sema::ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope) { | ||||||||
15614 | // Leave the expression-evaluation context. | ||||||||
15615 | DiscardCleanupsInEvaluationContext(); | ||||||||
15616 | PopExpressionEvaluationContext(); | ||||||||
15617 | |||||||||
15618 | // Pop off CurBlock, handle nested blocks. | ||||||||
15619 | PopDeclContext(); | ||||||||
15620 | PopFunctionScopeInfo(); | ||||||||
15621 | } | ||||||||
15622 | |||||||||
15623 | /// ActOnBlockStmtExpr - This is called when the body of a block statement | ||||||||
15624 | /// literal was successfully completed. ^(int x){...} | ||||||||
15625 | ExprResult Sema::ActOnBlockStmtExpr(SourceLocation CaretLoc, | ||||||||
15626 | Stmt *Body, Scope *CurScope) { | ||||||||
15627 | // If blocks are disabled, emit an error. | ||||||||
15628 | if (!LangOpts.Blocks) | ||||||||
15629 | Diag(CaretLoc, diag::err_blocks_disable) << LangOpts.OpenCL; | ||||||||
15630 | |||||||||
15631 | // Leave the expression-evaluation context. | ||||||||
15632 | if (hasAnyUnrecoverableErrorsInThisFunction()) | ||||||||
15633 | DiscardCleanupsInEvaluationContext(); | ||||||||
15634 | assert(!Cleanup.exprNeedsCleanups() &&(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within block not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within block not correctly bound!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15635, __extension__ __PRETTY_FUNCTION__)) | ||||||||
15635 | "cleanups within block not correctly bound!")(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within block not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within block not correctly bound!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15635, __extension__ __PRETTY_FUNCTION__)); | ||||||||
15636 | PopExpressionEvaluationContext(); | ||||||||
15637 | |||||||||
15638 | BlockScopeInfo *BSI = cast<BlockScopeInfo>(FunctionScopes.back()); | ||||||||
15639 | BlockDecl *BD = BSI->TheDecl; | ||||||||
15640 | |||||||||
15641 | if (BSI->HasImplicitReturnType) | ||||||||
15642 | deduceClosureReturnType(*BSI); | ||||||||
15643 | |||||||||
15644 | QualType RetTy = Context.VoidTy; | ||||||||
15645 | if (!BSI->ReturnType.isNull()) | ||||||||
15646 | RetTy = BSI->ReturnType; | ||||||||
15647 | |||||||||
15648 | bool NoReturn = BD->hasAttr<NoReturnAttr>(); | ||||||||
15649 | QualType BlockTy; | ||||||||
15650 | |||||||||
15651 | // If the user wrote a function type in some form, try to use that. | ||||||||
15652 | if (!BSI->FunctionType.isNull()) { | ||||||||
15653 | const FunctionType *FTy = BSI->FunctionType->castAs<FunctionType>(); | ||||||||
15654 | |||||||||
15655 | FunctionType::ExtInfo Ext = FTy->getExtInfo(); | ||||||||
15656 | if (NoReturn && !Ext.getNoReturn()) Ext = Ext.withNoReturn(true); | ||||||||
15657 | |||||||||
15658 | // Turn protoless block types into nullary block types. | ||||||||
15659 | if (isa<FunctionNoProtoType>(FTy)) { | ||||||||
15660 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
15661 | EPI.ExtInfo = Ext; | ||||||||
15662 | BlockTy = Context.getFunctionType(RetTy, None, EPI); | ||||||||
15663 | |||||||||
15664 | // Otherwise, if we don't need to change anything about the function type, | ||||||||
15665 | // preserve its sugar structure. | ||||||||
15666 | } else if (FTy->getReturnType() == RetTy && | ||||||||
15667 | (!NoReturn || FTy->getNoReturnAttr())) { | ||||||||
15668 | BlockTy = BSI->FunctionType; | ||||||||
15669 | |||||||||
15670 | // Otherwise, make the minimal modifications to the function type. | ||||||||
15671 | } else { | ||||||||
15672 | const FunctionProtoType *FPT = cast<FunctionProtoType>(FTy); | ||||||||
15673 | FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo(); | ||||||||
15674 | EPI.TypeQuals = Qualifiers(); | ||||||||
15675 | EPI.ExtInfo = Ext; | ||||||||
15676 | BlockTy = Context.getFunctionType(RetTy, FPT->getParamTypes(), EPI); | ||||||||
15677 | } | ||||||||
15678 | |||||||||
15679 | // If we don't have a function type, just build one from nothing. | ||||||||
15680 | } else { | ||||||||
15681 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
15682 | EPI.ExtInfo = FunctionType::ExtInfo().withNoReturn(NoReturn); | ||||||||
15683 | BlockTy = Context.getFunctionType(RetTy, None, EPI); | ||||||||
15684 | } | ||||||||
15685 | |||||||||
15686 | DiagnoseUnusedParameters(BD->parameters()); | ||||||||
15687 | BlockTy = Context.getBlockPointerType(BlockTy); | ||||||||
15688 | |||||||||
15689 | // If needed, diagnose invalid gotos and switches in the block. | ||||||||
15690 | if (getCurFunction()->NeedsScopeChecking() && | ||||||||
15691 | !PP.isCodeCompletionEnabled()) | ||||||||
15692 | DiagnoseInvalidJumps(cast<CompoundStmt>(Body)); | ||||||||
15693 | |||||||||
15694 | BD->setBody(cast<CompoundStmt>(Body)); | ||||||||
15695 | |||||||||
15696 | if (Body && getCurFunction()->HasPotentialAvailabilityViolations) | ||||||||
15697 | DiagnoseUnguardedAvailabilityViolations(BD); | ||||||||
15698 | |||||||||
15699 | // Try to apply the named return value optimization. We have to check again | ||||||||
15700 | // if we can do this, though, because blocks keep return statements around | ||||||||
15701 | // to deduce an implicit return type. | ||||||||
15702 | if (getLangOpts().CPlusPlus && RetTy->isRecordType() && | ||||||||
15703 | !BD->isDependentContext()) | ||||||||
15704 | computeNRVO(Body, BSI); | ||||||||
15705 | |||||||||
15706 | if (RetTy.hasNonTrivialToPrimitiveDestructCUnion() || | ||||||||
15707 | RetTy.hasNonTrivialToPrimitiveCopyCUnion()) | ||||||||
15708 | checkNonTrivialCUnion(RetTy, BD->getCaretLocation(), NTCUC_FunctionReturn, | ||||||||
15709 | NTCUK_Destruct|NTCUK_Copy); | ||||||||
15710 | |||||||||
15711 | PopDeclContext(); | ||||||||
15712 | |||||||||
15713 | // Set the captured variables on the block. | ||||||||
15714 | SmallVector<BlockDecl::Capture, 4> Captures; | ||||||||
15715 | for (Capture &Cap : BSI->Captures) { | ||||||||
15716 | if (Cap.isInvalid() || Cap.isThisCapture()) | ||||||||
15717 | continue; | ||||||||
15718 | |||||||||
15719 | VarDecl *Var = Cap.getVariable(); | ||||||||
15720 | Expr *CopyExpr = nullptr; | ||||||||
15721 | if (getLangOpts().CPlusPlus && Cap.isCopyCapture()) { | ||||||||
15722 | if (const RecordType *Record = | ||||||||
15723 | Cap.getCaptureType()->getAs<RecordType>()) { | ||||||||
15724 | // The capture logic needs the destructor, so make sure we mark it. | ||||||||
15725 | // Usually this is unnecessary because most local variables have | ||||||||
15726 | // their destructors marked at declaration time, but parameters are | ||||||||
15727 | // an exception because it's technically only the call site that | ||||||||
15728 | // actually requires the destructor. | ||||||||
15729 | if (isa<ParmVarDecl>(Var)) | ||||||||
15730 | FinalizeVarWithDestructor(Var, Record); | ||||||||
15731 | |||||||||
15732 | // Enter a separate potentially-evaluated context while building block | ||||||||
15733 | // initializers to isolate their cleanups from those of the block | ||||||||
15734 | // itself. | ||||||||
15735 | // FIXME: Is this appropriate even when the block itself occurs in an | ||||||||
15736 | // unevaluated operand? | ||||||||
15737 | EnterExpressionEvaluationContext EvalContext( | ||||||||
15738 | *this, ExpressionEvaluationContext::PotentiallyEvaluated); | ||||||||
15739 | |||||||||
15740 | SourceLocation Loc = Cap.getLocation(); | ||||||||
15741 | |||||||||
15742 | ExprResult Result = BuildDeclarationNameExpr( | ||||||||
15743 | CXXScopeSpec(), DeclarationNameInfo(Var->getDeclName(), Loc), Var); | ||||||||
15744 | |||||||||
15745 | // According to the blocks spec, the capture of a variable from | ||||||||
15746 | // the stack requires a const copy constructor. This is not true | ||||||||
15747 | // of the copy/move done to move a __block variable to the heap. | ||||||||
15748 | if (!Result.isInvalid() && | ||||||||
15749 | !Result.get()->getType().isConstQualified()) { | ||||||||
15750 | Result = ImpCastExprToType(Result.get(), | ||||||||
15751 | Result.get()->getType().withConst(), | ||||||||
15752 | CK_NoOp, VK_LValue); | ||||||||
15753 | } | ||||||||
15754 | |||||||||
15755 | if (!Result.isInvalid()) { | ||||||||
15756 | Result = PerformCopyInitialization( | ||||||||
15757 | InitializedEntity::InitializeBlock(Var->getLocation(), | ||||||||
15758 | Cap.getCaptureType(), false), | ||||||||
15759 | Loc, Result.get()); | ||||||||
15760 | } | ||||||||
15761 | |||||||||
15762 | // Build a full-expression copy expression if initialization | ||||||||
15763 | // succeeded and used a non-trivial constructor. Recover from | ||||||||
15764 | // errors by pretending that the copy isn't necessary. | ||||||||
15765 | if (!Result.isInvalid() && | ||||||||
15766 | !cast<CXXConstructExpr>(Result.get())->getConstructor() | ||||||||
15767 | ->isTrivial()) { | ||||||||
15768 | Result = MaybeCreateExprWithCleanups(Result); | ||||||||
15769 | CopyExpr = Result.get(); | ||||||||
15770 | } | ||||||||
15771 | } | ||||||||
15772 | } | ||||||||
15773 | |||||||||
15774 | BlockDecl::Capture NewCap(Var, Cap.isBlockCapture(), Cap.isNested(), | ||||||||
15775 | CopyExpr); | ||||||||
15776 | Captures.push_back(NewCap); | ||||||||
15777 | } | ||||||||
15778 | BD->setCaptures(Context, Captures, BSI->CXXThisCaptureIndex != 0); | ||||||||
15779 | |||||||||
15780 | // Pop the block scope now but keep it alive to the end of this function. | ||||||||
15781 | AnalysisBasedWarnings::Policy WP = AnalysisWarnings.getDefaultPolicy(); | ||||||||
15782 | PoppedFunctionScopePtr ScopeRAII = PopFunctionScopeInfo(&WP, BD, BlockTy); | ||||||||
15783 | |||||||||
15784 | BlockExpr *Result = new (Context) BlockExpr(BD, BlockTy); | ||||||||
15785 | |||||||||
15786 | // If the block isn't obviously global, i.e. it captures anything at | ||||||||
15787 | // all, then we need to do a few things in the surrounding context: | ||||||||
15788 | if (Result->getBlockDecl()->hasCaptures()) { | ||||||||
15789 | // First, this expression has a new cleanup object. | ||||||||
15790 | ExprCleanupObjects.push_back(Result->getBlockDecl()); | ||||||||
15791 | Cleanup.setExprNeedsCleanups(true); | ||||||||
15792 | |||||||||
15793 | // It also gets a branch-protected scope if any of the captured | ||||||||
15794 | // variables needs destruction. | ||||||||
15795 | for (const auto &CI : Result->getBlockDecl()->captures()) { | ||||||||
15796 | const VarDecl *var = CI.getVariable(); | ||||||||
15797 | if (var->getType().isDestructedType() != QualType::DK_none) { | ||||||||
15798 | setFunctionHasBranchProtectedScope(); | ||||||||
15799 | break; | ||||||||
15800 | } | ||||||||
15801 | } | ||||||||
15802 | } | ||||||||
15803 | |||||||||
15804 | if (getCurFunction()) | ||||||||
15805 | getCurFunction()->addBlock(BD); | ||||||||
15806 | |||||||||
15807 | return Result; | ||||||||
15808 | } | ||||||||
15809 | |||||||||
15810 | ExprResult Sema::ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, | ||||||||
15811 | SourceLocation RPLoc) { | ||||||||
15812 | TypeSourceInfo *TInfo; | ||||||||
15813 | GetTypeFromParser(Ty, &TInfo); | ||||||||
15814 | return BuildVAArgExpr(BuiltinLoc, E, TInfo, RPLoc); | ||||||||
15815 | } | ||||||||
15816 | |||||||||
15817 | ExprResult Sema::BuildVAArgExpr(SourceLocation BuiltinLoc, | ||||||||
15818 | Expr *E, TypeSourceInfo *TInfo, | ||||||||
15819 | SourceLocation RPLoc) { | ||||||||
15820 | Expr *OrigExpr = E; | ||||||||
15821 | bool IsMS = false; | ||||||||
15822 | |||||||||
15823 | // CUDA device code does not support varargs. | ||||||||
15824 | if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice) { | ||||||||
15825 | if (const FunctionDecl *F = dyn_cast<FunctionDecl>(CurContext)) { | ||||||||
15826 | CUDAFunctionTarget T = IdentifyCUDATarget(F); | ||||||||
15827 | if (T == CFT_Global || T == CFT_Device || T == CFT_HostDevice) | ||||||||
15828 | return ExprError(Diag(E->getBeginLoc(), diag::err_va_arg_in_device)); | ||||||||
15829 | } | ||||||||
15830 | } | ||||||||
15831 | |||||||||
15832 | // NVPTX does not support va_arg expression. | ||||||||
15833 | if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && | ||||||||
15834 | Context.getTargetInfo().getTriple().isNVPTX()) | ||||||||
15835 | targetDiag(E->getBeginLoc(), diag::err_va_arg_in_device); | ||||||||
15836 | |||||||||
15837 | // It might be a __builtin_ms_va_list. (But don't ever mark a va_arg() | ||||||||
15838 | // as Microsoft ABI on an actual Microsoft platform, where | ||||||||
15839 | // __builtin_ms_va_list and __builtin_va_list are the same.) | ||||||||
15840 | if (!E->isTypeDependent() && Context.getTargetInfo().hasBuiltinMSVaList() && | ||||||||
15841 | Context.getTargetInfo().getBuiltinVaListKind() != TargetInfo::CharPtrBuiltinVaList) { | ||||||||
15842 | QualType MSVaListType = Context.getBuiltinMSVaListType(); | ||||||||
15843 | if (Context.hasSameType(MSVaListType, E->getType())) { | ||||||||
15844 | if (CheckForModifiableLvalue(E, BuiltinLoc, *this)) | ||||||||
15845 | return ExprError(); | ||||||||
15846 | IsMS = true; | ||||||||
15847 | } | ||||||||
15848 | } | ||||||||
15849 | |||||||||
15850 | // Get the va_list type | ||||||||
15851 | QualType VaListType = Context.getBuiltinVaListType(); | ||||||||
15852 | if (!IsMS) { | ||||||||
15853 | if (VaListType->isArrayType()) { | ||||||||
15854 | // Deal with implicit array decay; for example, on x86-64, | ||||||||
15855 | // va_list is an array, but it's supposed to decay to | ||||||||
15856 | // a pointer for va_arg. | ||||||||
15857 | VaListType = Context.getArrayDecayedType(VaListType); | ||||||||
15858 | // Make sure the input expression also decays appropriately. | ||||||||
15859 | ExprResult Result = UsualUnaryConversions(E); | ||||||||
15860 | if (Result.isInvalid()) | ||||||||
15861 | return ExprError(); | ||||||||
15862 | E = Result.get(); | ||||||||
15863 | } else if (VaListType->isRecordType() && getLangOpts().CPlusPlus) { | ||||||||
15864 | // If va_list is a record type and we are compiling in C++ mode, | ||||||||
15865 | // check the argument using reference binding. | ||||||||
15866 | InitializedEntity Entity = InitializedEntity::InitializeParameter( | ||||||||
15867 | Context, Context.getLValueReferenceType(VaListType), false); | ||||||||
15868 | ExprResult Init = PerformCopyInitialization(Entity, SourceLocation(), E); | ||||||||
15869 | if (Init.isInvalid()) | ||||||||
15870 | return ExprError(); | ||||||||
15871 | E = Init.getAs<Expr>(); | ||||||||
15872 | } else { | ||||||||
15873 | // Otherwise, the va_list argument must be an l-value because | ||||||||
15874 | // it is modified by va_arg. | ||||||||
15875 | if (!E->isTypeDependent() && | ||||||||
15876 | CheckForModifiableLvalue(E, BuiltinLoc, *this)) | ||||||||
15877 | return ExprError(); | ||||||||
15878 | } | ||||||||
15879 | } | ||||||||
15880 | |||||||||
15881 | if (!IsMS && !E->isTypeDependent() && | ||||||||
15882 | !Context.hasSameType(VaListType, E->getType())) | ||||||||
15883 | return ExprError( | ||||||||
15884 | Diag(E->getBeginLoc(), | ||||||||
15885 | diag::err_first_argument_to_va_arg_not_of_type_va_list) | ||||||||
15886 | << OrigExpr->getType() << E->getSourceRange()); | ||||||||
15887 | |||||||||
15888 | if (!TInfo->getType()->isDependentType()) { | ||||||||
15889 | if (RequireCompleteType(TInfo->getTypeLoc().getBeginLoc(), TInfo->getType(), | ||||||||
15890 | diag::err_second_parameter_to_va_arg_incomplete, | ||||||||
15891 | TInfo->getTypeLoc())) | ||||||||
15892 | return ExprError(); | ||||||||
15893 | |||||||||
15894 | if (RequireNonAbstractType(TInfo->getTypeLoc().getBeginLoc(), | ||||||||
15895 | TInfo->getType(), | ||||||||
15896 | diag::err_second_parameter_to_va_arg_abstract, | ||||||||
15897 | TInfo->getTypeLoc())) | ||||||||
15898 | return ExprError(); | ||||||||
15899 | |||||||||
15900 | if (!TInfo->getType().isPODType(Context)) { | ||||||||
15901 | Diag(TInfo->getTypeLoc().getBeginLoc(), | ||||||||
15902 | TInfo->getType()->isObjCLifetimeType() | ||||||||
15903 | ? diag::warn_second_parameter_to_va_arg_ownership_qualified | ||||||||
15904 | : diag::warn_second_parameter_to_va_arg_not_pod) | ||||||||
15905 | << TInfo->getType() | ||||||||
15906 | << TInfo->getTypeLoc().getSourceRange(); | ||||||||
15907 | } | ||||||||
15908 | |||||||||
15909 | // Check for va_arg where arguments of the given type will be promoted | ||||||||
15910 | // (i.e. this va_arg is guaranteed to have undefined behavior). | ||||||||
15911 | QualType PromoteType; | ||||||||
15912 | if (TInfo->getType()->isPromotableIntegerType()) { | ||||||||
15913 | PromoteType = Context.getPromotedIntegerType(TInfo->getType()); | ||||||||
15914 | // [cstdarg.syn]p1 defers the C++ behavior to what the C standard says, | ||||||||
15915 | // and C2x 7.16.1.1p2 says, in part: | ||||||||
15916 | // If type is not compatible with the type of the actual next argument | ||||||||
15917 | // (as promoted according to the default argument promotions), the | ||||||||
15918 | // behavior is undefined, except for the following cases: | ||||||||
15919 | // - both types are pointers to qualified or unqualified versions of | ||||||||
15920 | // compatible types; | ||||||||
15921 | // - one type is a signed integer type, the other type is the | ||||||||
15922 | // corresponding unsigned integer type, and the value is | ||||||||
15923 | // representable in both types; | ||||||||
15924 | // - one type is pointer to qualified or unqualified void and the | ||||||||
15925 | // other is a pointer to a qualified or unqualified character type. | ||||||||
15926 | // Given that type compatibility is the primary requirement (ignoring | ||||||||
15927 | // qualifications), you would think we could call typesAreCompatible() | ||||||||
15928 | // directly to test this. However, in C++, that checks for *same type*, | ||||||||
15929 | // which causes false positives when passing an enumeration type to | ||||||||
15930 | // va_arg. Instead, get the underlying type of the enumeration and pass | ||||||||
15931 | // that. | ||||||||
15932 | QualType UnderlyingType = TInfo->getType(); | ||||||||
15933 | if (const auto *ET = UnderlyingType->getAs<EnumType>()) | ||||||||
15934 | UnderlyingType = ET->getDecl()->getIntegerType(); | ||||||||
15935 | if (Context.typesAreCompatible(PromoteType, UnderlyingType, | ||||||||
15936 | /*CompareUnqualified*/ true)) | ||||||||
15937 | PromoteType = QualType(); | ||||||||
15938 | |||||||||
15939 | // If the types are still not compatible, we need to test whether the | ||||||||
15940 | // promoted type and the underlying type are the same except for | ||||||||
15941 | // signedness. Ask the AST for the correctly corresponding type and see | ||||||||
15942 | // if that's compatible. | ||||||||
15943 | if (!PromoteType.isNull() && | ||||||||
15944 | PromoteType->isUnsignedIntegerType() != | ||||||||
15945 | UnderlyingType->isUnsignedIntegerType()) { | ||||||||
15946 | UnderlyingType = | ||||||||
15947 | UnderlyingType->isUnsignedIntegerType() | ||||||||
15948 | ? Context.getCorrespondingSignedType(UnderlyingType) | ||||||||
15949 | : Context.getCorrespondingUnsignedType(UnderlyingType); | ||||||||
15950 | if (Context.typesAreCompatible(PromoteType, UnderlyingType, | ||||||||
15951 | /*CompareUnqualified*/ true)) | ||||||||
15952 | PromoteType = QualType(); | ||||||||
15953 | } | ||||||||
15954 | } | ||||||||
15955 | if (TInfo->getType()->isSpecificBuiltinType(BuiltinType::Float)) | ||||||||
15956 | PromoteType = Context.DoubleTy; | ||||||||
15957 | if (!PromoteType.isNull()) | ||||||||
15958 | DiagRuntimeBehavior(TInfo->getTypeLoc().getBeginLoc(), E, | ||||||||
15959 | PDiag(diag::warn_second_parameter_to_va_arg_never_compatible) | ||||||||
15960 | << TInfo->getType() | ||||||||
15961 | << PromoteType | ||||||||
15962 | << TInfo->getTypeLoc().getSourceRange()); | ||||||||
15963 | } | ||||||||
15964 | |||||||||
15965 | QualType T = TInfo->getType().getNonLValueExprType(Context); | ||||||||
15966 | return new (Context) VAArgExpr(BuiltinLoc, E, TInfo, RPLoc, T, IsMS); | ||||||||
15967 | } | ||||||||
15968 | |||||||||
15969 | ExprResult Sema::ActOnGNUNullExpr(SourceLocation TokenLoc) { | ||||||||
15970 | // The type of __null will be int or long, depending on the size of | ||||||||
15971 | // pointers on the target. | ||||||||
15972 | QualType Ty; | ||||||||
15973 | unsigned pw = Context.getTargetInfo().getPointerWidth(0); | ||||||||
15974 | if (pw == Context.getTargetInfo().getIntWidth()) | ||||||||
15975 | Ty = Context.IntTy; | ||||||||
15976 | else if (pw == Context.getTargetInfo().getLongWidth()) | ||||||||
15977 | Ty = Context.LongTy; | ||||||||
15978 | else if (pw == Context.getTargetInfo().getLongLongWidth()) | ||||||||
15979 | Ty = Context.LongLongTy; | ||||||||
15980 | else { | ||||||||
15981 | llvm_unreachable("I don't know size of pointer!")::llvm::llvm_unreachable_internal("I don't know size of pointer!" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 15981); | ||||||||
15982 | } | ||||||||
15983 | |||||||||
15984 | return new (Context) GNUNullExpr(Ty, TokenLoc); | ||||||||
15985 | } | ||||||||
15986 | |||||||||
15987 | ExprResult Sema::ActOnSourceLocExpr(SourceLocExpr::IdentKind Kind, | ||||||||
15988 | SourceLocation BuiltinLoc, | ||||||||
15989 | SourceLocation RPLoc) { | ||||||||
15990 | return BuildSourceLocExpr(Kind, BuiltinLoc, RPLoc, CurContext); | ||||||||
15991 | } | ||||||||
15992 | |||||||||
15993 | ExprResult Sema::BuildSourceLocExpr(SourceLocExpr::IdentKind Kind, | ||||||||
15994 | SourceLocation BuiltinLoc, | ||||||||
15995 | SourceLocation RPLoc, | ||||||||
15996 | DeclContext *ParentContext) { | ||||||||
15997 | return new (Context) | ||||||||
15998 | SourceLocExpr(Context, Kind, BuiltinLoc, RPLoc, ParentContext); | ||||||||
15999 | } | ||||||||
16000 | |||||||||
16001 | bool Sema::CheckConversionToObjCLiteral(QualType DstType, Expr *&Exp, | ||||||||
16002 | bool Diagnose) { | ||||||||
16003 | if (!getLangOpts().ObjC) | ||||||||
16004 | return false; | ||||||||
16005 | |||||||||
16006 | const ObjCObjectPointerType *PT = DstType->getAs<ObjCObjectPointerType>(); | ||||||||
16007 | if (!PT) | ||||||||
16008 | return false; | ||||||||
16009 | const ObjCInterfaceDecl *ID = PT->getInterfaceDecl(); | ||||||||
16010 | |||||||||
16011 | // Ignore any parens, implicit casts (should only be | ||||||||
16012 | // array-to-pointer decays), and not-so-opaque values. The last is | ||||||||
16013 | // important for making this trigger for property assignments. | ||||||||
16014 | Expr *SrcExpr = Exp->IgnoreParenImpCasts(); | ||||||||
16015 | if (OpaqueValueExpr *OV = dyn_cast<OpaqueValueExpr>(SrcExpr)) | ||||||||
16016 | if (OV->getSourceExpr()) | ||||||||
16017 | SrcExpr = OV->getSourceExpr()->IgnoreParenImpCasts(); | ||||||||
16018 | |||||||||
16019 | if (auto *SL = dyn_cast<StringLiteral>(SrcExpr)) { | ||||||||
16020 | if (!PT->isObjCIdType() && | ||||||||
16021 | !(ID && ID->getIdentifier()->isStr("NSString"))) | ||||||||
16022 | return false; | ||||||||
16023 | if (!SL->isAscii()) | ||||||||
16024 | return false; | ||||||||
16025 | |||||||||
16026 | if (Diagnose) { | ||||||||
16027 | Diag(SL->getBeginLoc(), diag::err_missing_atsign_prefix) | ||||||||
16028 | << /*string*/0 << FixItHint::CreateInsertion(SL->getBeginLoc(), "@"); | ||||||||
16029 | Exp = BuildObjCStringLiteral(SL->getBeginLoc(), SL).get(); | ||||||||
16030 | } | ||||||||
16031 | return true; | ||||||||
16032 | } | ||||||||
16033 | |||||||||
16034 | if ((isa<IntegerLiteral>(SrcExpr) || isa<CharacterLiteral>(SrcExpr) || | ||||||||
16035 | isa<FloatingLiteral>(SrcExpr) || isa<ObjCBoolLiteralExpr>(SrcExpr) || | ||||||||
16036 | isa<CXXBoolLiteralExpr>(SrcExpr)) && | ||||||||
16037 | !SrcExpr->isNullPointerConstant( | ||||||||
16038 | getASTContext(), Expr::NPC_NeverValueDependent)) { | ||||||||
16039 | if (!ID || !ID->getIdentifier()->isStr("NSNumber")) | ||||||||
16040 | return false; | ||||||||
16041 | if (Diagnose) { | ||||||||
16042 | Diag(SrcExpr->getBeginLoc(), diag::err_missing_atsign_prefix) | ||||||||
16043 | << /*number*/1 | ||||||||
16044 | << FixItHint::CreateInsertion(SrcExpr->getBeginLoc(), "@"); | ||||||||
16045 | Expr *NumLit = | ||||||||
16046 | BuildObjCNumericLiteral(SrcExpr->getBeginLoc(), SrcExpr).get(); | ||||||||
16047 | if (NumLit) | ||||||||
16048 | Exp = NumLit; | ||||||||
16049 | } | ||||||||
16050 | return true; | ||||||||
16051 | } | ||||||||
16052 | |||||||||
16053 | return false; | ||||||||
16054 | } | ||||||||
16055 | |||||||||
16056 | static bool maybeDiagnoseAssignmentToFunction(Sema &S, QualType DstType, | ||||||||
16057 | const Expr *SrcExpr) { | ||||||||
16058 | if (!DstType->isFunctionPointerType() || | ||||||||
16059 | !SrcExpr->getType()->isFunctionType()) | ||||||||
16060 | return false; | ||||||||
16061 | |||||||||
16062 | auto *DRE = dyn_cast<DeclRefExpr>(SrcExpr->IgnoreParenImpCasts()); | ||||||||
16063 | if (!DRE) | ||||||||
16064 | return false; | ||||||||
16065 | |||||||||
16066 | auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl()); | ||||||||
16067 | if (!FD) | ||||||||
16068 | return false; | ||||||||
16069 | |||||||||
16070 | return !S.checkAddressOfFunctionIsAvailable(FD, | ||||||||
16071 | /*Complain=*/true, | ||||||||
16072 | SrcExpr->getBeginLoc()); | ||||||||
16073 | } | ||||||||
16074 | |||||||||
16075 | bool Sema::DiagnoseAssignmentResult(AssignConvertType ConvTy, | ||||||||
16076 | SourceLocation Loc, | ||||||||
16077 | QualType DstType, QualType SrcType, | ||||||||
16078 | Expr *SrcExpr, AssignmentAction Action, | ||||||||
16079 | bool *Complained) { | ||||||||
16080 | if (Complained) | ||||||||
16081 | *Complained = false; | ||||||||
16082 | |||||||||
16083 | // Decode the result (notice that AST's are still created for extensions). | ||||||||
16084 | bool CheckInferredResultType = false; | ||||||||
16085 | bool isInvalid = false; | ||||||||
16086 | unsigned DiagKind = 0; | ||||||||
16087 | ConversionFixItGenerator ConvHints; | ||||||||
16088 | bool MayHaveConvFixit = false; | ||||||||
16089 | bool MayHaveFunctionDiff = false; | ||||||||
16090 | const ObjCInterfaceDecl *IFace = nullptr; | ||||||||
16091 | const ObjCProtocolDecl *PDecl = nullptr; | ||||||||
16092 | |||||||||
16093 | switch (ConvTy) { | ||||||||
16094 | case Compatible: | ||||||||
16095 | DiagnoseAssignmentEnum(DstType, SrcType, SrcExpr); | ||||||||
16096 | return false; | ||||||||
16097 | |||||||||
16098 | case PointerToInt: | ||||||||
16099 | if (getLangOpts().CPlusPlus) { | ||||||||
16100 | DiagKind = diag::err_typecheck_convert_pointer_int; | ||||||||
16101 | isInvalid = true; | ||||||||
16102 | } else { | ||||||||
16103 | DiagKind = diag::ext_typecheck_convert_pointer_int; | ||||||||
16104 | } | ||||||||
16105 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
16106 | MayHaveConvFixit = true; | ||||||||
16107 | break; | ||||||||
16108 | case IntToPointer: | ||||||||
16109 | if (getLangOpts().CPlusPlus) { | ||||||||
16110 | DiagKind = diag::err_typecheck_convert_int_pointer; | ||||||||
16111 | isInvalid = true; | ||||||||
16112 | } else { | ||||||||
16113 | DiagKind = diag::ext_typecheck_convert_int_pointer; | ||||||||
16114 | } | ||||||||
16115 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
16116 | MayHaveConvFixit = true; | ||||||||
16117 | break; | ||||||||
16118 | case IncompatibleFunctionPointer: | ||||||||
16119 | if (getLangOpts().CPlusPlus) { | ||||||||
16120 | DiagKind = diag::err_typecheck_convert_incompatible_function_pointer; | ||||||||
16121 | isInvalid = true; | ||||||||
16122 | } else { | ||||||||
16123 | DiagKind = diag::ext_typecheck_convert_incompatible_function_pointer; | ||||||||
16124 | } | ||||||||
16125 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
16126 | MayHaveConvFixit = true; | ||||||||
16127 | break; | ||||||||
16128 | case IncompatiblePointer: | ||||||||
16129 | if (Action == AA_Passing_CFAudited) { | ||||||||
16130 | DiagKind = diag::err_arc_typecheck_convert_incompatible_pointer; | ||||||||
16131 | } else if (getLangOpts().CPlusPlus) { | ||||||||
16132 | DiagKind = diag::err_typecheck_convert_incompatible_pointer; | ||||||||
16133 | isInvalid = true; | ||||||||
16134 | } else { | ||||||||
16135 | DiagKind = diag::ext_typecheck_convert_incompatible_pointer; | ||||||||
16136 | } | ||||||||
16137 | CheckInferredResultType = DstType->isObjCObjectPointerType() && | ||||||||
16138 | SrcType->isObjCObjectPointerType(); | ||||||||
16139 | if (!CheckInferredResultType) { | ||||||||
16140 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
16141 | } else if (CheckInferredResultType) { | ||||||||
16142 | SrcType = SrcType.getUnqualifiedType(); | ||||||||
16143 | DstType = DstType.getUnqualifiedType(); | ||||||||
16144 | } | ||||||||
16145 | MayHaveConvFixit = true; | ||||||||
16146 | break; | ||||||||
16147 | case IncompatiblePointerSign: | ||||||||
16148 | if (getLangOpts().CPlusPlus) { | ||||||||
16149 | DiagKind = diag::err_typecheck_convert_incompatible_pointer_sign; | ||||||||
16150 | isInvalid = true; | ||||||||
16151 | } else { | ||||||||
16152 | DiagKind = diag::ext_typecheck_convert_incompatible_pointer_sign; | ||||||||
16153 | } | ||||||||
16154 | break; | ||||||||
16155 | case FunctionVoidPointer: | ||||||||
16156 | if (getLangOpts().CPlusPlus) { | ||||||||
16157 | DiagKind = diag::err_typecheck_convert_pointer_void_func; | ||||||||
16158 | isInvalid = true; | ||||||||
16159 | } else { | ||||||||
16160 | DiagKind = diag::ext_typecheck_convert_pointer_void_func; | ||||||||
16161 | } | ||||||||
16162 | break; | ||||||||
16163 | case IncompatiblePointerDiscardsQualifiers: { | ||||||||
16164 | // Perform array-to-pointer decay if necessary. | ||||||||
16165 | if (SrcType->isArrayType()) SrcType = Context.getArrayDecayedType(SrcType); | ||||||||
16166 | |||||||||
16167 | isInvalid = true; | ||||||||
16168 | |||||||||
16169 | Qualifiers lhq = SrcType->getPointeeType().getQualifiers(); | ||||||||
16170 | Qualifiers rhq = DstType->getPointeeType().getQualifiers(); | ||||||||
16171 | if (lhq.getAddressSpace() != rhq.getAddressSpace()) { | ||||||||
16172 | DiagKind = diag::err_typecheck_incompatible_address_space; | ||||||||
16173 | break; | ||||||||
16174 | |||||||||
16175 | } else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) { | ||||||||
16176 | DiagKind = diag::err_typecheck_incompatible_ownership; | ||||||||
16177 | break; | ||||||||
16178 | } | ||||||||
16179 | |||||||||
16180 | llvm_unreachable("unknown error case for discarding qualifiers!")::llvm::llvm_unreachable_internal("unknown error case for discarding qualifiers!" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16180); | ||||||||
16181 | // fallthrough | ||||||||
16182 | } | ||||||||
16183 | case CompatiblePointerDiscardsQualifiers: | ||||||||
16184 | // If the qualifiers lost were because we were applying the | ||||||||
16185 | // (deprecated) C++ conversion from a string literal to a char* | ||||||||
16186 | // (or wchar_t*), then there was no error (C++ 4.2p2). FIXME: | ||||||||
16187 | // Ideally, this check would be performed in | ||||||||
16188 | // checkPointerTypesForAssignment. However, that would require a | ||||||||
16189 | // bit of refactoring (so that the second argument is an | ||||||||
16190 | // expression, rather than a type), which should be done as part | ||||||||
16191 | // of a larger effort to fix checkPointerTypesForAssignment for | ||||||||
16192 | // C++ semantics. | ||||||||
16193 | if (getLangOpts().CPlusPlus && | ||||||||
16194 | IsStringLiteralToNonConstPointerConversion(SrcExpr, DstType)) | ||||||||
16195 | return false; | ||||||||
16196 | if (getLangOpts().CPlusPlus) { | ||||||||
16197 | DiagKind = diag::err_typecheck_convert_discards_qualifiers; | ||||||||
16198 | isInvalid = true; | ||||||||
16199 | } else { | ||||||||
16200 | DiagKind = diag::ext_typecheck_convert_discards_qualifiers; | ||||||||
16201 | } | ||||||||
16202 | |||||||||
16203 | break; | ||||||||
16204 | case IncompatibleNestedPointerQualifiers: | ||||||||
16205 | if (getLangOpts().CPlusPlus) { | ||||||||
16206 | isInvalid = true; | ||||||||
16207 | DiagKind = diag::err_nested_pointer_qualifier_mismatch; | ||||||||
16208 | } else { | ||||||||
16209 | DiagKind = diag::ext_nested_pointer_qualifier_mismatch; | ||||||||
16210 | } | ||||||||
16211 | break; | ||||||||
16212 | case IncompatibleNestedPointerAddressSpaceMismatch: | ||||||||
16213 | DiagKind = diag::err_typecheck_incompatible_nested_address_space; | ||||||||
16214 | isInvalid = true; | ||||||||
16215 | break; | ||||||||
16216 | case IntToBlockPointer: | ||||||||
16217 | DiagKind = diag::err_int_to_block_pointer; | ||||||||
16218 | isInvalid = true; | ||||||||
16219 | break; | ||||||||
16220 | case IncompatibleBlockPointer: | ||||||||
16221 | DiagKind = diag::err_typecheck_convert_incompatible_block_pointer; | ||||||||
16222 | isInvalid = true; | ||||||||
16223 | break; | ||||||||
16224 | case IncompatibleObjCQualifiedId: { | ||||||||
16225 | if (SrcType->isObjCQualifiedIdType()) { | ||||||||
16226 | const ObjCObjectPointerType *srcOPT = | ||||||||
16227 | SrcType->castAs<ObjCObjectPointerType>(); | ||||||||
16228 | for (auto *srcProto : srcOPT->quals()) { | ||||||||
16229 | PDecl = srcProto; | ||||||||
16230 | break; | ||||||||
16231 | } | ||||||||
16232 | if (const ObjCInterfaceType *IFaceT = | ||||||||
16233 | DstType->castAs<ObjCObjectPointerType>()->getInterfaceType()) | ||||||||
16234 | IFace = IFaceT->getDecl(); | ||||||||
16235 | } | ||||||||
16236 | else if (DstType->isObjCQualifiedIdType()) { | ||||||||
16237 | const ObjCObjectPointerType *dstOPT = | ||||||||
16238 | DstType->castAs<ObjCObjectPointerType>(); | ||||||||
16239 | for (auto *dstProto : dstOPT->quals()) { | ||||||||
16240 | PDecl = dstProto; | ||||||||
16241 | break; | ||||||||
16242 | } | ||||||||
16243 | if (const ObjCInterfaceType *IFaceT = | ||||||||
16244 | SrcType->castAs<ObjCObjectPointerType>()->getInterfaceType()) | ||||||||
16245 | IFace = IFaceT->getDecl(); | ||||||||
16246 | } | ||||||||
16247 | if (getLangOpts().CPlusPlus) { | ||||||||
16248 | DiagKind = diag::err_incompatible_qualified_id; | ||||||||
16249 | isInvalid = true; | ||||||||
16250 | } else { | ||||||||
16251 | DiagKind = diag::warn_incompatible_qualified_id; | ||||||||
16252 | } | ||||||||
16253 | break; | ||||||||
16254 | } | ||||||||
16255 | case IncompatibleVectors: | ||||||||
16256 | if (getLangOpts().CPlusPlus) { | ||||||||
16257 | DiagKind = diag::err_incompatible_vectors; | ||||||||
16258 | isInvalid = true; | ||||||||
16259 | } else { | ||||||||
16260 | DiagKind = diag::warn_incompatible_vectors; | ||||||||
16261 | } | ||||||||
16262 | break; | ||||||||
16263 | case IncompatibleObjCWeakRef: | ||||||||
16264 | DiagKind = diag::err_arc_weak_unavailable_assign; | ||||||||
16265 | isInvalid = true; | ||||||||
16266 | break; | ||||||||
16267 | case Incompatible: | ||||||||
16268 | if (maybeDiagnoseAssignmentToFunction(*this, DstType, SrcExpr)) { | ||||||||
16269 | if (Complained) | ||||||||
16270 | *Complained = true; | ||||||||
16271 | return true; | ||||||||
16272 | } | ||||||||
16273 | |||||||||
16274 | DiagKind = diag::err_typecheck_convert_incompatible; | ||||||||
16275 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
16276 | MayHaveConvFixit = true; | ||||||||
16277 | isInvalid = true; | ||||||||
16278 | MayHaveFunctionDiff = true; | ||||||||
16279 | break; | ||||||||
16280 | } | ||||||||
16281 | |||||||||
16282 | QualType FirstType, SecondType; | ||||||||
16283 | switch (Action) { | ||||||||
16284 | case AA_Assigning: | ||||||||
16285 | case AA_Initializing: | ||||||||
16286 | // The destination type comes first. | ||||||||
16287 | FirstType = DstType; | ||||||||
16288 | SecondType = SrcType; | ||||||||
16289 | break; | ||||||||
16290 | |||||||||
16291 | case AA_Returning: | ||||||||
16292 | case AA_Passing: | ||||||||
16293 | case AA_Passing_CFAudited: | ||||||||
16294 | case AA_Converting: | ||||||||
16295 | case AA_Sending: | ||||||||
16296 | case AA_Casting: | ||||||||
16297 | // The source type comes first. | ||||||||
16298 | FirstType = SrcType; | ||||||||
16299 | SecondType = DstType; | ||||||||
16300 | break; | ||||||||
16301 | } | ||||||||
16302 | |||||||||
16303 | PartialDiagnostic FDiag = PDiag(DiagKind); | ||||||||
16304 | if (Action == AA_Passing_CFAudited) | ||||||||
16305 | FDiag << FirstType << SecondType << AA_Passing << SrcExpr->getSourceRange(); | ||||||||
16306 | else | ||||||||
16307 | FDiag << FirstType << SecondType << Action << SrcExpr->getSourceRange(); | ||||||||
16308 | |||||||||
16309 | if (DiagKind == diag::ext_typecheck_convert_incompatible_pointer_sign || | ||||||||
16310 | DiagKind == diag::err_typecheck_convert_incompatible_pointer_sign) { | ||||||||
16311 | auto isPlainChar = [](const clang::Type *Type) { | ||||||||
16312 | return Type->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
16313 | Type->isSpecificBuiltinType(BuiltinType::Char_U); | ||||||||
16314 | }; | ||||||||
16315 | FDiag << (isPlainChar(FirstType->getPointeeOrArrayElementType()) || | ||||||||
16316 | isPlainChar(SecondType->getPointeeOrArrayElementType())); | ||||||||
16317 | } | ||||||||
16318 | |||||||||
16319 | // If we can fix the conversion, suggest the FixIts. | ||||||||
16320 | if (!ConvHints.isNull()) { | ||||||||
16321 | for (FixItHint &H : ConvHints.Hints) | ||||||||
16322 | FDiag << H; | ||||||||
16323 | } | ||||||||
16324 | |||||||||
16325 | if (MayHaveConvFixit) { FDiag << (unsigned) (ConvHints.Kind); } | ||||||||
16326 | |||||||||
16327 | if (MayHaveFunctionDiff) | ||||||||
16328 | HandleFunctionTypeMismatch(FDiag, SecondType, FirstType); | ||||||||
16329 | |||||||||
16330 | Diag(Loc, FDiag); | ||||||||
16331 | if ((DiagKind == diag::warn_incompatible_qualified_id || | ||||||||
16332 | DiagKind == diag::err_incompatible_qualified_id) && | ||||||||
16333 | PDecl && IFace && !IFace->hasDefinition()) | ||||||||
16334 | Diag(IFace->getLocation(), diag::note_incomplete_class_and_qualified_id) | ||||||||
16335 | << IFace << PDecl; | ||||||||
16336 | |||||||||
16337 | if (SecondType == Context.OverloadTy) | ||||||||
16338 | NoteAllOverloadCandidates(OverloadExpr::find(SrcExpr).Expression, | ||||||||
16339 | FirstType, /*TakingAddress=*/true); | ||||||||
16340 | |||||||||
16341 | if (CheckInferredResultType) | ||||||||
16342 | EmitRelatedResultTypeNote(SrcExpr); | ||||||||
16343 | |||||||||
16344 | if (Action == AA_Returning && ConvTy == IncompatiblePointer) | ||||||||
16345 | EmitRelatedResultTypeNoteForReturn(DstType); | ||||||||
16346 | |||||||||
16347 | if (Complained) | ||||||||
16348 | *Complained = true; | ||||||||
16349 | return isInvalid; | ||||||||
16350 | } | ||||||||
16351 | |||||||||
16352 | ExprResult Sema::VerifyIntegerConstantExpression(Expr *E, | ||||||||
16353 | llvm::APSInt *Result, | ||||||||
16354 | AllowFoldKind CanFold) { | ||||||||
16355 | class SimpleICEDiagnoser : public VerifyICEDiagnoser { | ||||||||
16356 | public: | ||||||||
16357 | SemaDiagnosticBuilder diagnoseNotICEType(Sema &S, SourceLocation Loc, | ||||||||
16358 | QualType T) override { | ||||||||
16359 | return S.Diag(Loc, diag::err_ice_not_integral) | ||||||||
16360 | << T << S.LangOpts.CPlusPlus; | ||||||||
16361 | } | ||||||||
16362 | SemaDiagnosticBuilder diagnoseNotICE(Sema &S, SourceLocation Loc) override { | ||||||||
16363 | return S.Diag(Loc, diag::err_expr_not_ice) << S.LangOpts.CPlusPlus; | ||||||||
16364 | } | ||||||||
16365 | } Diagnoser; | ||||||||
16366 | |||||||||
16367 | return VerifyIntegerConstantExpression(E, Result, Diagnoser, CanFold); | ||||||||
16368 | } | ||||||||
16369 | |||||||||
16370 | ExprResult Sema::VerifyIntegerConstantExpression(Expr *E, | ||||||||
16371 | llvm::APSInt *Result, | ||||||||
16372 | unsigned DiagID, | ||||||||
16373 | AllowFoldKind CanFold) { | ||||||||
16374 | class IDDiagnoser : public VerifyICEDiagnoser { | ||||||||
16375 | unsigned DiagID; | ||||||||
16376 | |||||||||
16377 | public: | ||||||||
16378 | IDDiagnoser(unsigned DiagID) | ||||||||
16379 | : VerifyICEDiagnoser(DiagID == 0), DiagID(DiagID) { } | ||||||||
16380 | |||||||||
16381 | SemaDiagnosticBuilder diagnoseNotICE(Sema &S, SourceLocation Loc) override { | ||||||||
16382 | return S.Diag(Loc, DiagID); | ||||||||
16383 | } | ||||||||
16384 | } Diagnoser(DiagID); | ||||||||
16385 | |||||||||
16386 | return VerifyIntegerConstantExpression(E, Result, Diagnoser, CanFold); | ||||||||
16387 | } | ||||||||
16388 | |||||||||
16389 | Sema::SemaDiagnosticBuilder | ||||||||
16390 | Sema::VerifyICEDiagnoser::diagnoseNotICEType(Sema &S, SourceLocation Loc, | ||||||||
16391 | QualType T) { | ||||||||
16392 | return diagnoseNotICE(S, Loc); | ||||||||
16393 | } | ||||||||
16394 | |||||||||
16395 | Sema::SemaDiagnosticBuilder | ||||||||
16396 | Sema::VerifyICEDiagnoser::diagnoseFold(Sema &S, SourceLocation Loc) { | ||||||||
16397 | return S.Diag(Loc, diag::ext_expr_not_ice) << S.LangOpts.CPlusPlus; | ||||||||
16398 | } | ||||||||
16399 | |||||||||
16400 | ExprResult | ||||||||
16401 | Sema::VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, | ||||||||
16402 | VerifyICEDiagnoser &Diagnoser, | ||||||||
16403 | AllowFoldKind CanFold) { | ||||||||
16404 | SourceLocation DiagLoc = E->getBeginLoc(); | ||||||||
16405 | |||||||||
16406 | if (getLangOpts().CPlusPlus11) { | ||||||||
16407 | // C++11 [expr.const]p5: | ||||||||
16408 | // If an expression of literal class type is used in a context where an | ||||||||
16409 | // integral constant expression is required, then that class type shall | ||||||||
16410 | // have a single non-explicit conversion function to an integral or | ||||||||
16411 | // unscoped enumeration type | ||||||||
16412 | ExprResult Converted; | ||||||||
16413 | class CXX11ConvertDiagnoser : public ICEConvertDiagnoser { | ||||||||
16414 | VerifyICEDiagnoser &BaseDiagnoser; | ||||||||
16415 | public: | ||||||||
16416 | CXX11ConvertDiagnoser(VerifyICEDiagnoser &BaseDiagnoser) | ||||||||
16417 | : ICEConvertDiagnoser(/*AllowScopedEnumerations*/ false, | ||||||||
16418 | BaseDiagnoser.Suppress, true), | ||||||||
16419 | BaseDiagnoser(BaseDiagnoser) {} | ||||||||
16420 | |||||||||
16421 | SemaDiagnosticBuilder diagnoseNotInt(Sema &S, SourceLocation Loc, | ||||||||
16422 | QualType T) override { | ||||||||
16423 | return BaseDiagnoser.diagnoseNotICEType(S, Loc, T); | ||||||||
16424 | } | ||||||||
16425 | |||||||||
16426 | SemaDiagnosticBuilder diagnoseIncomplete( | ||||||||
16427 | Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
16428 | return S.Diag(Loc, diag::err_ice_incomplete_type) << T; | ||||||||
16429 | } | ||||||||
16430 | |||||||||
16431 | SemaDiagnosticBuilder diagnoseExplicitConv( | ||||||||
16432 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) override { | ||||||||
16433 | return S.Diag(Loc, diag::err_ice_explicit_conversion) << T << ConvTy; | ||||||||
16434 | } | ||||||||
16435 | |||||||||
16436 | SemaDiagnosticBuilder noteExplicitConv( | ||||||||
16437 | Sema &S, CXXConversionDecl *Conv, QualType ConvTy) override { | ||||||||
16438 | return S.Diag(Conv->getLocation(), diag::note_ice_conversion_here) | ||||||||
16439 | << ConvTy->isEnumeralType() << ConvTy; | ||||||||
16440 | } | ||||||||
16441 | |||||||||
16442 | SemaDiagnosticBuilder diagnoseAmbiguous( | ||||||||
16443 | Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
16444 | return S.Diag(Loc, diag::err_ice_ambiguous_conversion) << T; | ||||||||
16445 | } | ||||||||
16446 | |||||||||
16447 | SemaDiagnosticBuilder noteAmbiguous( | ||||||||
16448 | Sema &S, CXXConversionDecl *Conv, QualType ConvTy) override { | ||||||||
16449 | return S.Diag(Conv->getLocation(), diag::note_ice_conversion_here) | ||||||||
16450 | << ConvTy->isEnumeralType() << ConvTy; | ||||||||
16451 | } | ||||||||
16452 | |||||||||
16453 | SemaDiagnosticBuilder diagnoseConversion( | ||||||||
16454 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) override { | ||||||||
16455 | llvm_unreachable("conversion functions are permitted")::llvm::llvm_unreachable_internal("conversion functions are permitted" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16455); | ||||||||
16456 | } | ||||||||
16457 | } ConvertDiagnoser(Diagnoser); | ||||||||
16458 | |||||||||
16459 | Converted = PerformContextualImplicitConversion(DiagLoc, E, | ||||||||
16460 | ConvertDiagnoser); | ||||||||
16461 | if (Converted.isInvalid()) | ||||||||
16462 | return Converted; | ||||||||
16463 | E = Converted.get(); | ||||||||
16464 | if (!E->getType()->isIntegralOrUnscopedEnumerationType()) | ||||||||
16465 | return ExprError(); | ||||||||
16466 | } else if (!E->getType()->isIntegralOrUnscopedEnumerationType()) { | ||||||||
16467 | // An ICE must be of integral or unscoped enumeration type. | ||||||||
16468 | if (!Diagnoser.Suppress) | ||||||||
16469 | Diagnoser.diagnoseNotICEType(*this, DiagLoc, E->getType()) | ||||||||
16470 | << E->getSourceRange(); | ||||||||
16471 | return ExprError(); | ||||||||
16472 | } | ||||||||
16473 | |||||||||
16474 | ExprResult RValueExpr = DefaultLvalueConversion(E); | ||||||||
16475 | if (RValueExpr.isInvalid()) | ||||||||
16476 | return ExprError(); | ||||||||
16477 | |||||||||
16478 | E = RValueExpr.get(); | ||||||||
16479 | |||||||||
16480 | // Circumvent ICE checking in C++11 to avoid evaluating the expression twice | ||||||||
16481 | // in the non-ICE case. | ||||||||
16482 | if (!getLangOpts().CPlusPlus11 && E->isIntegerConstantExpr(Context)) { | ||||||||
16483 | if (Result) | ||||||||
16484 | *Result = E->EvaluateKnownConstIntCheckOverflow(Context); | ||||||||
16485 | if (!isa<ConstantExpr>(E)) | ||||||||
16486 | E = Result ? ConstantExpr::Create(Context, E, APValue(*Result)) | ||||||||
16487 | : ConstantExpr::Create(Context, E); | ||||||||
16488 | return E; | ||||||||
16489 | } | ||||||||
16490 | |||||||||
16491 | Expr::EvalResult EvalResult; | ||||||||
16492 | SmallVector<PartialDiagnosticAt, 8> Notes; | ||||||||
16493 | EvalResult.Diag = &Notes; | ||||||||
16494 | |||||||||
16495 | // Try to evaluate the expression, and produce diagnostics explaining why it's | ||||||||
16496 | // not a constant expression as a side-effect. | ||||||||
16497 | bool Folded = | ||||||||
16498 | E->EvaluateAsRValue(EvalResult, Context, /*isConstantContext*/ true) && | ||||||||
16499 | EvalResult.Val.isInt() && !EvalResult.HasSideEffects; | ||||||||
16500 | |||||||||
16501 | if (!isa<ConstantExpr>(E)) | ||||||||
16502 | E = ConstantExpr::Create(Context, E, EvalResult.Val); | ||||||||
16503 | |||||||||
16504 | // In C++11, we can rely on diagnostics being produced for any expression | ||||||||
16505 | // which is not a constant expression. If no diagnostics were produced, then | ||||||||
16506 | // this is a constant expression. | ||||||||
16507 | if (Folded && getLangOpts().CPlusPlus11 && Notes.empty()) { | ||||||||
16508 | if (Result) | ||||||||
16509 | *Result = EvalResult.Val.getInt(); | ||||||||
16510 | return E; | ||||||||
16511 | } | ||||||||
16512 | |||||||||
16513 | // If our only note is the usual "invalid subexpression" note, just point | ||||||||
16514 | // the caret at its location rather than producing an essentially | ||||||||
16515 | // redundant note. | ||||||||
16516 | if (Notes.size() == 1 && Notes[0].second.getDiagID() == | ||||||||
16517 | diag::note_invalid_subexpr_in_const_expr) { | ||||||||
16518 | DiagLoc = Notes[0].first; | ||||||||
16519 | Notes.clear(); | ||||||||
16520 | } | ||||||||
16521 | |||||||||
16522 | if (!Folded || !CanFold) { | ||||||||
16523 | if (!Diagnoser.Suppress) { | ||||||||
16524 | Diagnoser.diagnoseNotICE(*this, DiagLoc) << E->getSourceRange(); | ||||||||
16525 | for (const PartialDiagnosticAt &Note : Notes) | ||||||||
16526 | Diag(Note.first, Note.second); | ||||||||
16527 | } | ||||||||
16528 | |||||||||
16529 | return ExprError(); | ||||||||
16530 | } | ||||||||
16531 | |||||||||
16532 | Diagnoser.diagnoseFold(*this, DiagLoc) << E->getSourceRange(); | ||||||||
16533 | for (const PartialDiagnosticAt &Note : Notes) | ||||||||
16534 | Diag(Note.first, Note.second); | ||||||||
16535 | |||||||||
16536 | if (Result) | ||||||||
16537 | *Result = EvalResult.Val.getInt(); | ||||||||
16538 | return E; | ||||||||
16539 | } | ||||||||
16540 | |||||||||
16541 | namespace { | ||||||||
16542 | // Handle the case where we conclude a expression which we speculatively | ||||||||
16543 | // considered to be unevaluated is actually evaluated. | ||||||||
16544 | class TransformToPE : public TreeTransform<TransformToPE> { | ||||||||
16545 | typedef TreeTransform<TransformToPE> BaseTransform; | ||||||||
16546 | |||||||||
16547 | public: | ||||||||
16548 | TransformToPE(Sema &SemaRef) : BaseTransform(SemaRef) { } | ||||||||
16549 | |||||||||
16550 | // Make sure we redo semantic analysis | ||||||||
16551 | bool AlwaysRebuild() { return true; } | ||||||||
16552 | bool ReplacingOriginal() { return true; } | ||||||||
16553 | |||||||||
16554 | // We need to special-case DeclRefExprs referring to FieldDecls which | ||||||||
16555 | // are not part of a member pointer formation; normal TreeTransforming | ||||||||
16556 | // doesn't catch this case because of the way we represent them in the AST. | ||||||||
16557 | // FIXME: This is a bit ugly; is it really the best way to handle this | ||||||||
16558 | // case? | ||||||||
16559 | // | ||||||||
16560 | // Error on DeclRefExprs referring to FieldDecls. | ||||||||
16561 | ExprResult TransformDeclRefExpr(DeclRefExpr *E) { | ||||||||
16562 | if (isa<FieldDecl>(E->getDecl()) && | ||||||||
16563 | !SemaRef.isUnevaluatedContext()) | ||||||||
16564 | return SemaRef.Diag(E->getLocation(), | ||||||||
16565 | diag::err_invalid_non_static_member_use) | ||||||||
16566 | << E->getDecl() << E->getSourceRange(); | ||||||||
16567 | |||||||||
16568 | return BaseTransform::TransformDeclRefExpr(E); | ||||||||
16569 | } | ||||||||
16570 | |||||||||
16571 | // Exception: filter out member pointer formation | ||||||||
16572 | ExprResult TransformUnaryOperator(UnaryOperator *E) { | ||||||||
16573 | if (E->getOpcode() == UO_AddrOf && E->getType()->isMemberPointerType()) | ||||||||
16574 | return E; | ||||||||
16575 | |||||||||
16576 | return BaseTransform::TransformUnaryOperator(E); | ||||||||
16577 | } | ||||||||
16578 | |||||||||
16579 | // The body of a lambda-expression is in a separate expression evaluation | ||||||||
16580 | // context so never needs to be transformed. | ||||||||
16581 | // FIXME: Ideally we wouldn't transform the closure type either, and would | ||||||||
16582 | // just recreate the capture expressions and lambda expression. | ||||||||
16583 | StmtResult TransformLambdaBody(LambdaExpr *E, Stmt *Body) { | ||||||||
16584 | return SkipLambdaBody(E, Body); | ||||||||
16585 | } | ||||||||
16586 | }; | ||||||||
16587 | } | ||||||||
16588 | |||||||||
16589 | ExprResult Sema::TransformToPotentiallyEvaluated(Expr *E) { | ||||||||
16590 | assert(isUnevaluatedContext() &&(static_cast <bool> (isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? void (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16591, __extension__ __PRETTY_FUNCTION__)) | ||||||||
16591 | "Should only transform unevaluated expressions")(static_cast <bool> (isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? void (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16591, __extension__ __PRETTY_FUNCTION__)); | ||||||||
16592 | ExprEvalContexts.back().Context = | ||||||||
16593 | ExprEvalContexts[ExprEvalContexts.size()-2].Context; | ||||||||
16594 | if (isUnevaluatedContext()) | ||||||||
16595 | return E; | ||||||||
16596 | return TransformToPE(*this).TransformExpr(E); | ||||||||
16597 | } | ||||||||
16598 | |||||||||
16599 | void | ||||||||
16600 | Sema::PushExpressionEvaluationContext( | ||||||||
16601 | ExpressionEvaluationContext NewContext, Decl *LambdaContextDecl, | ||||||||
16602 | ExpressionEvaluationContextRecord::ExpressionKind ExprContext) { | ||||||||
16603 | ExprEvalContexts.emplace_back(NewContext, ExprCleanupObjects.size(), Cleanup, | ||||||||
16604 | LambdaContextDecl, ExprContext); | ||||||||
16605 | Cleanup.reset(); | ||||||||
16606 | if (!MaybeODRUseExprs.empty()) | ||||||||
16607 | std::swap(MaybeODRUseExprs, ExprEvalContexts.back().SavedMaybeODRUseExprs); | ||||||||
16608 | } | ||||||||
16609 | |||||||||
16610 | void | ||||||||
16611 | Sema::PushExpressionEvaluationContext( | ||||||||
16612 | ExpressionEvaluationContext NewContext, ReuseLambdaContextDecl_t, | ||||||||
16613 | ExpressionEvaluationContextRecord::ExpressionKind ExprContext) { | ||||||||
16614 | Decl *ClosureContextDecl = ExprEvalContexts.back().ManglingContextDecl; | ||||||||
16615 | PushExpressionEvaluationContext(NewContext, ClosureContextDecl, ExprContext); | ||||||||
16616 | } | ||||||||
16617 | |||||||||
16618 | namespace { | ||||||||
16619 | |||||||||
16620 | const DeclRefExpr *CheckPossibleDeref(Sema &S, const Expr *PossibleDeref) { | ||||||||
16621 | PossibleDeref = PossibleDeref->IgnoreParenImpCasts(); | ||||||||
16622 | if (const auto *E = dyn_cast<UnaryOperator>(PossibleDeref)) { | ||||||||
16623 | if (E->getOpcode() == UO_Deref) | ||||||||
16624 | return CheckPossibleDeref(S, E->getSubExpr()); | ||||||||
16625 | } else if (const auto *E = dyn_cast<ArraySubscriptExpr>(PossibleDeref)) { | ||||||||
16626 | return CheckPossibleDeref(S, E->getBase()); | ||||||||
16627 | } else if (const auto *E = dyn_cast<MemberExpr>(PossibleDeref)) { | ||||||||
16628 | return CheckPossibleDeref(S, E->getBase()); | ||||||||
16629 | } else if (const auto E = dyn_cast<DeclRefExpr>(PossibleDeref)) { | ||||||||
16630 | QualType Inner; | ||||||||
16631 | QualType Ty = E->getType(); | ||||||||
16632 | if (const auto *Ptr = Ty->getAs<PointerType>()) | ||||||||
16633 | Inner = Ptr->getPointeeType(); | ||||||||
16634 | else if (const auto *Arr = S.Context.getAsArrayType(Ty)) | ||||||||
16635 | Inner = Arr->getElementType(); | ||||||||
16636 | else | ||||||||
16637 | return nullptr; | ||||||||
16638 | |||||||||
16639 | if (Inner->hasAttr(attr::NoDeref)) | ||||||||
16640 | return E; | ||||||||
16641 | } | ||||||||
16642 | return nullptr; | ||||||||
16643 | } | ||||||||
16644 | |||||||||
16645 | } // namespace | ||||||||
16646 | |||||||||
16647 | void Sema::WarnOnPendingNoDerefs(ExpressionEvaluationContextRecord &Rec) { | ||||||||
16648 | for (const Expr *E : Rec.PossibleDerefs) { | ||||||||
16649 | const DeclRefExpr *DeclRef = CheckPossibleDeref(*this, E); | ||||||||
16650 | if (DeclRef) { | ||||||||
16651 | const ValueDecl *Decl = DeclRef->getDecl(); | ||||||||
16652 | Diag(E->getExprLoc(), diag::warn_dereference_of_noderef_type) | ||||||||
16653 | << Decl->getName() << E->getSourceRange(); | ||||||||
16654 | Diag(Decl->getLocation(), diag::note_previous_decl) << Decl->getName(); | ||||||||
16655 | } else { | ||||||||
16656 | Diag(E->getExprLoc(), diag::warn_dereference_of_noderef_type_no_decl) | ||||||||
16657 | << E->getSourceRange(); | ||||||||
16658 | } | ||||||||
16659 | } | ||||||||
16660 | Rec.PossibleDerefs.clear(); | ||||||||
16661 | } | ||||||||
16662 | |||||||||
16663 | /// Check whether E, which is either a discarded-value expression or an | ||||||||
16664 | /// unevaluated operand, is a simple-assignment to a volatlie-qualified lvalue, | ||||||||
16665 | /// and if so, remove it from the list of volatile-qualified assignments that | ||||||||
16666 | /// we are going to warn are deprecated. | ||||||||
16667 | void Sema::CheckUnusedVolatileAssignment(Expr *E) { | ||||||||
16668 | if (!E->getType().isVolatileQualified() || !getLangOpts().CPlusPlus20) | ||||||||
16669 | return; | ||||||||
16670 | |||||||||
16671 | // Note: ignoring parens here is not justified by the standard rules, but | ||||||||
16672 | // ignoring parentheses seems like a more reasonable approach, and this only | ||||||||
16673 | // drives a deprecation warning so doesn't affect conformance. | ||||||||
16674 | if (auto *BO = dyn_cast<BinaryOperator>(E->IgnoreParenImpCasts())) { | ||||||||
16675 | if (BO->getOpcode() == BO_Assign) { | ||||||||
16676 | auto &LHSs = ExprEvalContexts.back().VolatileAssignmentLHSs; | ||||||||
16677 | LHSs.erase(std::remove(LHSs.begin(), LHSs.end(), BO->getLHS()), | ||||||||
16678 | LHSs.end()); | ||||||||
16679 | } | ||||||||
16680 | } | ||||||||
16681 | } | ||||||||
16682 | |||||||||
16683 | ExprResult Sema::CheckForImmediateInvocation(ExprResult E, FunctionDecl *Decl) { | ||||||||
16684 | if (isUnevaluatedContext() || !E.isUsable() || !Decl || | ||||||||
16685 | !Decl->isConsteval() || isConstantEvaluated() || | ||||||||
16686 | RebuildingImmediateInvocation) | ||||||||
16687 | return E; | ||||||||
16688 | |||||||||
16689 | /// Opportunistically remove the callee from ReferencesToConsteval if we can. | ||||||||
16690 | /// It's OK if this fails; we'll also remove this in | ||||||||
16691 | /// HandleImmediateInvocations, but catching it here allows us to avoid | ||||||||
16692 | /// walking the AST looking for it in simple cases. | ||||||||
16693 | if (auto *Call = dyn_cast<CallExpr>(E.get()->IgnoreImplicit())) | ||||||||
16694 | if (auto *DeclRef = | ||||||||
16695 | dyn_cast<DeclRefExpr>(Call->getCallee()->IgnoreImplicit())) | ||||||||
16696 | ExprEvalContexts.back().ReferenceToConsteval.erase(DeclRef); | ||||||||
16697 | |||||||||
16698 | E = MaybeCreateExprWithCleanups(E); | ||||||||
16699 | |||||||||
16700 | ConstantExpr *Res = ConstantExpr::Create( | ||||||||
16701 | getASTContext(), E.get(), | ||||||||
16702 | ConstantExpr::getStorageKind(Decl->getReturnType().getTypePtr(), | ||||||||
16703 | getASTContext()), | ||||||||
16704 | /*IsImmediateInvocation*/ true); | ||||||||
16705 | ExprEvalContexts.back().ImmediateInvocationCandidates.emplace_back(Res, 0); | ||||||||
16706 | return Res; | ||||||||
16707 | } | ||||||||
16708 | |||||||||
16709 | static void EvaluateAndDiagnoseImmediateInvocation( | ||||||||
16710 | Sema &SemaRef, Sema::ImmediateInvocationCandidate Candidate) { | ||||||||
16711 | llvm::SmallVector<PartialDiagnosticAt, 8> Notes; | ||||||||
16712 | Expr::EvalResult Eval; | ||||||||
16713 | Eval.Diag = &Notes; | ||||||||
16714 | ConstantExpr *CE = Candidate.getPointer(); | ||||||||
16715 | bool Result = CE->EvaluateAsConstantExpr( | ||||||||
16716 | Eval, SemaRef.getASTContext(), ConstantExprKind::ImmediateInvocation); | ||||||||
16717 | if (!Result || !Notes.empty()) { | ||||||||
16718 | Expr *InnerExpr = CE->getSubExpr()->IgnoreImplicit(); | ||||||||
16719 | if (auto *FunctionalCast = dyn_cast<CXXFunctionalCastExpr>(InnerExpr)) | ||||||||
16720 | InnerExpr = FunctionalCast->getSubExpr(); | ||||||||
16721 | FunctionDecl *FD = nullptr; | ||||||||
16722 | if (auto *Call = dyn_cast<CallExpr>(InnerExpr)) | ||||||||
16723 | FD = cast<FunctionDecl>(Call->getCalleeDecl()); | ||||||||
16724 | else if (auto *Call = dyn_cast<CXXConstructExpr>(InnerExpr)) | ||||||||
16725 | FD = Call->getConstructor(); | ||||||||
16726 | else | ||||||||
16727 | llvm_unreachable("unhandled decl kind")::llvm::llvm_unreachable_internal("unhandled decl kind", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16727); | ||||||||
16728 | assert(FD->isConsteval())(static_cast <bool> (FD->isConsteval()) ? void (0) : __assert_fail ("FD->isConsteval()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16728, __extension__ __PRETTY_FUNCTION__)); | ||||||||
16729 | SemaRef.Diag(CE->getBeginLoc(), diag::err_invalid_consteval_call) << FD; | ||||||||
16730 | for (auto &Note : Notes) | ||||||||
16731 | SemaRef.Diag(Note.first, Note.second); | ||||||||
16732 | return; | ||||||||
16733 | } | ||||||||
16734 | CE->MoveIntoResult(Eval.Val, SemaRef.getASTContext()); | ||||||||
16735 | } | ||||||||
16736 | |||||||||
16737 | static void RemoveNestedImmediateInvocation( | ||||||||
16738 | Sema &SemaRef, Sema::ExpressionEvaluationContextRecord &Rec, | ||||||||
16739 | SmallVector<Sema::ImmediateInvocationCandidate, 4>::reverse_iterator It) { | ||||||||
16740 | struct ComplexRemove : TreeTransform<ComplexRemove> { | ||||||||
16741 | using Base = TreeTransform<ComplexRemove>; | ||||||||
16742 | llvm::SmallPtrSetImpl<DeclRefExpr *> &DRSet; | ||||||||
16743 | SmallVector<Sema::ImmediateInvocationCandidate, 4> &IISet; | ||||||||
16744 | SmallVector<Sema::ImmediateInvocationCandidate, 4>::reverse_iterator | ||||||||
16745 | CurrentII; | ||||||||
16746 | ComplexRemove(Sema &SemaRef, llvm::SmallPtrSetImpl<DeclRefExpr *> &DR, | ||||||||
16747 | SmallVector<Sema::ImmediateInvocationCandidate, 4> &II, | ||||||||
16748 | SmallVector<Sema::ImmediateInvocationCandidate, | ||||||||
16749 | 4>::reverse_iterator Current) | ||||||||
16750 | : Base(SemaRef), DRSet(DR), IISet(II), CurrentII(Current) {} | ||||||||
16751 | void RemoveImmediateInvocation(ConstantExpr* E) { | ||||||||
16752 | auto It = std::find_if(CurrentII, IISet.rend(), | ||||||||
16753 | [E](Sema::ImmediateInvocationCandidate Elem) { | ||||||||
16754 | return Elem.getPointer() == E; | ||||||||
16755 | }); | ||||||||
16756 | assert(It != IISet.rend() &&(static_cast <bool> (It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? void (0) : __assert_fail ("It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16758, __extension__ __PRETTY_FUNCTION__)) | ||||||||
16757 | "ConstantExpr marked IsImmediateInvocation should "(static_cast <bool> (It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? void (0) : __assert_fail ("It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16758, __extension__ __PRETTY_FUNCTION__)) | ||||||||
16758 | "be present")(static_cast <bool> (It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? void (0) : __assert_fail ("It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16758, __extension__ __PRETTY_FUNCTION__)); | ||||||||
16759 | It->setInt(1); // Mark as deleted | ||||||||
16760 | } | ||||||||
16761 | ExprResult TransformConstantExpr(ConstantExpr *E) { | ||||||||
16762 | if (!E->isImmediateInvocation()) | ||||||||
16763 | return Base::TransformConstantExpr(E); | ||||||||
16764 | RemoveImmediateInvocation(E); | ||||||||
16765 | return Base::TransformExpr(E->getSubExpr()); | ||||||||
16766 | } | ||||||||
16767 | /// Base::TransfromCXXOperatorCallExpr doesn't traverse the callee so | ||||||||
16768 | /// we need to remove its DeclRefExpr from the DRSet. | ||||||||
16769 | ExprResult TransformCXXOperatorCallExpr(CXXOperatorCallExpr *E) { | ||||||||
16770 | DRSet.erase(cast<DeclRefExpr>(E->getCallee()->IgnoreImplicit())); | ||||||||
16771 | return Base::TransformCXXOperatorCallExpr(E); | ||||||||
16772 | } | ||||||||
16773 | /// Base::TransformInitializer skip ConstantExpr so we need to visit them | ||||||||
16774 | /// here. | ||||||||
16775 | ExprResult TransformInitializer(Expr *Init, bool NotCopyInit) { | ||||||||
16776 | if (!Init) | ||||||||
16777 | return Init; | ||||||||
16778 | /// ConstantExpr are the first layer of implicit node to be removed so if | ||||||||
16779 | /// Init isn't a ConstantExpr, no ConstantExpr will be skipped. | ||||||||
16780 | if (auto *CE = dyn_cast<ConstantExpr>(Init)) | ||||||||
16781 | if (CE->isImmediateInvocation()) | ||||||||
16782 | RemoveImmediateInvocation(CE); | ||||||||
16783 | return Base::TransformInitializer(Init, NotCopyInit); | ||||||||
16784 | } | ||||||||
16785 | ExprResult TransformDeclRefExpr(DeclRefExpr *E) { | ||||||||
16786 | DRSet.erase(E); | ||||||||
16787 | return E; | ||||||||
16788 | } | ||||||||
16789 | bool AlwaysRebuild() { return false; } | ||||||||
16790 | bool ReplacingOriginal() { return true; } | ||||||||
16791 | bool AllowSkippingCXXConstructExpr() { | ||||||||
16792 | bool Res = AllowSkippingFirstCXXConstructExpr; | ||||||||
16793 | AllowSkippingFirstCXXConstructExpr = true; | ||||||||
16794 | return Res; | ||||||||
16795 | } | ||||||||
16796 | bool AllowSkippingFirstCXXConstructExpr = true; | ||||||||
16797 | } Transformer(SemaRef, Rec.ReferenceToConsteval, | ||||||||
16798 | Rec.ImmediateInvocationCandidates, It); | ||||||||
16799 | |||||||||
16800 | /// CXXConstructExpr with a single argument are getting skipped by | ||||||||
16801 | /// TreeTransform in some situtation because they could be implicit. This | ||||||||
16802 | /// can only occur for the top-level CXXConstructExpr because it is used | ||||||||
16803 | /// nowhere in the expression being transformed therefore will not be rebuilt. | ||||||||
16804 | /// Setting AllowSkippingFirstCXXConstructExpr to false will prevent from | ||||||||
16805 | /// skipping the first CXXConstructExpr. | ||||||||
16806 | if (isa<CXXConstructExpr>(It->getPointer()->IgnoreImplicit())) | ||||||||
16807 | Transformer.AllowSkippingFirstCXXConstructExpr = false; | ||||||||
16808 | |||||||||
16809 | ExprResult Res = Transformer.TransformExpr(It->getPointer()->getSubExpr()); | ||||||||
16810 | assert(Res.isUsable())(static_cast <bool> (Res.isUsable()) ? void (0) : __assert_fail ("Res.isUsable()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16810, __extension__ __PRETTY_FUNCTION__)); | ||||||||
16811 | Res = SemaRef.MaybeCreateExprWithCleanups(Res); | ||||||||
16812 | It->getPointer()->setSubExpr(Res.get()); | ||||||||
16813 | } | ||||||||
16814 | |||||||||
16815 | static void | ||||||||
16816 | HandleImmediateInvocations(Sema &SemaRef, | ||||||||
16817 | Sema::ExpressionEvaluationContextRecord &Rec) { | ||||||||
16818 | if ((Rec.ImmediateInvocationCandidates.size() == 0 && | ||||||||
16819 | Rec.ReferenceToConsteval.size() == 0) || | ||||||||
16820 | SemaRef.RebuildingImmediateInvocation) | ||||||||
16821 | return; | ||||||||
16822 | |||||||||
16823 | /// When we have more then 1 ImmediateInvocationCandidates we need to check | ||||||||
16824 | /// for nested ImmediateInvocationCandidates. when we have only 1 we only | ||||||||
16825 | /// need to remove ReferenceToConsteval in the immediate invocation. | ||||||||
16826 | if (Rec.ImmediateInvocationCandidates.size() > 1) { | ||||||||
16827 | |||||||||
16828 | /// Prevent sema calls during the tree transform from adding pointers that | ||||||||
16829 | /// are already in the sets. | ||||||||
16830 | llvm::SaveAndRestore<bool> DisableIITracking( | ||||||||
16831 | SemaRef.RebuildingImmediateInvocation, true); | ||||||||
16832 | |||||||||
16833 | /// Prevent diagnostic during tree transfrom as they are duplicates | ||||||||
16834 | Sema::TentativeAnalysisScope DisableDiag(SemaRef); | ||||||||
16835 | |||||||||
16836 | for (auto It = Rec.ImmediateInvocationCandidates.rbegin(); | ||||||||
16837 | It != Rec.ImmediateInvocationCandidates.rend(); It++) | ||||||||
16838 | if (!It->getInt()) | ||||||||
16839 | RemoveNestedImmediateInvocation(SemaRef, Rec, It); | ||||||||
16840 | } else if (Rec.ImmediateInvocationCandidates.size() == 1 && | ||||||||
16841 | Rec.ReferenceToConsteval.size()) { | ||||||||
16842 | struct SimpleRemove : RecursiveASTVisitor<SimpleRemove> { | ||||||||
16843 | llvm::SmallPtrSetImpl<DeclRefExpr *> &DRSet; | ||||||||
16844 | SimpleRemove(llvm::SmallPtrSetImpl<DeclRefExpr *> &S) : DRSet(S) {} | ||||||||
16845 | bool VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
16846 | DRSet.erase(E); | ||||||||
16847 | return DRSet.size(); | ||||||||
16848 | } | ||||||||
16849 | } Visitor(Rec.ReferenceToConsteval); | ||||||||
16850 | Visitor.TraverseStmt( | ||||||||
16851 | Rec.ImmediateInvocationCandidates.front().getPointer()->getSubExpr()); | ||||||||
16852 | } | ||||||||
16853 | for (auto CE : Rec.ImmediateInvocationCandidates) | ||||||||
16854 | if (!CE.getInt()) | ||||||||
16855 | EvaluateAndDiagnoseImmediateInvocation(SemaRef, CE); | ||||||||
16856 | for (auto DR : Rec.ReferenceToConsteval) { | ||||||||
16857 | auto *FD = cast<FunctionDecl>(DR->getDecl()); | ||||||||
16858 | SemaRef.Diag(DR->getBeginLoc(), diag::err_invalid_consteval_take_address) | ||||||||
16859 | << FD; | ||||||||
16860 | SemaRef.Diag(FD->getLocation(), diag::note_declared_at); | ||||||||
16861 | } | ||||||||
16862 | } | ||||||||
16863 | |||||||||
16864 | void Sema::PopExpressionEvaluationContext() { | ||||||||
16865 | ExpressionEvaluationContextRecord& Rec = ExprEvalContexts.back(); | ||||||||
16866 | unsigned NumTypos = Rec.NumTypos; | ||||||||
16867 | |||||||||
16868 | if (!Rec.Lambdas.empty()) { | ||||||||
16869 | using ExpressionKind = ExpressionEvaluationContextRecord::ExpressionKind; | ||||||||
16870 | if (!getLangOpts().CPlusPlus20 && | ||||||||
16871 | (Rec.ExprContext == ExpressionKind::EK_TemplateArgument || | ||||||||
16872 | Rec.isUnevaluated() || | ||||||||
16873 | (Rec.isConstantEvaluated() && !getLangOpts().CPlusPlus17))) { | ||||||||
16874 | unsigned D; | ||||||||
16875 | if (Rec.isUnevaluated()) { | ||||||||
16876 | // C++11 [expr.prim.lambda]p2: | ||||||||
16877 | // A lambda-expression shall not appear in an unevaluated operand | ||||||||
16878 | // (Clause 5). | ||||||||
16879 | D = diag::err_lambda_unevaluated_operand; | ||||||||
16880 | } else if (Rec.isConstantEvaluated() && !getLangOpts().CPlusPlus17) { | ||||||||
16881 | // C++1y [expr.const]p2: | ||||||||
16882 | // A conditional-expression e is a core constant expression unless the | ||||||||
16883 | // evaluation of e, following the rules of the abstract machine, would | ||||||||
16884 | // evaluate [...] a lambda-expression. | ||||||||
16885 | D = diag::err_lambda_in_constant_expression; | ||||||||
16886 | } else if (Rec.ExprContext == ExpressionKind::EK_TemplateArgument) { | ||||||||
16887 | // C++17 [expr.prim.lamda]p2: | ||||||||
16888 | // A lambda-expression shall not appear [...] in a template-argument. | ||||||||
16889 | D = diag::err_lambda_in_invalid_context; | ||||||||
16890 | } else | ||||||||
16891 | llvm_unreachable("Couldn't infer lambda error message.")::llvm::llvm_unreachable_internal("Couldn't infer lambda error message." , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16891); | ||||||||
16892 | |||||||||
16893 | for (const auto *L : Rec.Lambdas) | ||||||||
16894 | Diag(L->getBeginLoc(), D); | ||||||||
16895 | } | ||||||||
16896 | } | ||||||||
16897 | |||||||||
16898 | WarnOnPendingNoDerefs(Rec); | ||||||||
16899 | HandleImmediateInvocations(*this, Rec); | ||||||||
16900 | |||||||||
16901 | // Warn on any volatile-qualified simple-assignments that are not discarded- | ||||||||
16902 | // value expressions nor unevaluated operands (those cases get removed from | ||||||||
16903 | // this list by CheckUnusedVolatileAssignment). | ||||||||
16904 | for (auto *BO : Rec.VolatileAssignmentLHSs) | ||||||||
16905 | Diag(BO->getBeginLoc(), diag::warn_deprecated_simple_assign_volatile) | ||||||||
16906 | << BO->getType(); | ||||||||
16907 | |||||||||
16908 | // When are coming out of an unevaluated context, clear out any | ||||||||
16909 | // temporaries that we may have created as part of the evaluation of | ||||||||
16910 | // the expression in that context: they aren't relevant because they | ||||||||
16911 | // will never be constructed. | ||||||||
16912 | if (Rec.isUnevaluated() || Rec.isConstantEvaluated()) { | ||||||||
16913 | ExprCleanupObjects.erase(ExprCleanupObjects.begin() + Rec.NumCleanupObjects, | ||||||||
16914 | ExprCleanupObjects.end()); | ||||||||
16915 | Cleanup = Rec.ParentCleanup; | ||||||||
16916 | CleanupVarDeclMarking(); | ||||||||
16917 | std::swap(MaybeODRUseExprs, Rec.SavedMaybeODRUseExprs); | ||||||||
16918 | // Otherwise, merge the contexts together. | ||||||||
16919 | } else { | ||||||||
16920 | Cleanup.mergeFrom(Rec.ParentCleanup); | ||||||||
16921 | MaybeODRUseExprs.insert(Rec.SavedMaybeODRUseExprs.begin(), | ||||||||
16922 | Rec.SavedMaybeODRUseExprs.end()); | ||||||||
16923 | } | ||||||||
16924 | |||||||||
16925 | // Pop the current expression evaluation context off the stack. | ||||||||
16926 | ExprEvalContexts.pop_back(); | ||||||||
16927 | |||||||||
16928 | // The global expression evaluation context record is never popped. | ||||||||
16929 | ExprEvalContexts.back().NumTypos += NumTypos; | ||||||||
16930 | } | ||||||||
16931 | |||||||||
16932 | void Sema::DiscardCleanupsInEvaluationContext() { | ||||||||
16933 | ExprCleanupObjects.erase( | ||||||||
16934 | ExprCleanupObjects.begin() + ExprEvalContexts.back().NumCleanupObjects, | ||||||||
16935 | ExprCleanupObjects.end()); | ||||||||
16936 | Cleanup.reset(); | ||||||||
16937 | MaybeODRUseExprs.clear(); | ||||||||
16938 | } | ||||||||
16939 | |||||||||
16940 | ExprResult Sema::HandleExprEvaluationContextForTypeof(Expr *E) { | ||||||||
16941 | ExprResult Result = CheckPlaceholderExpr(E); | ||||||||
16942 | if (Result.isInvalid()) | ||||||||
16943 | return ExprError(); | ||||||||
16944 | E = Result.get(); | ||||||||
16945 | if (!E->getType()->isVariablyModifiedType()) | ||||||||
16946 | return E; | ||||||||
16947 | return TransformToPotentiallyEvaluated(E); | ||||||||
16948 | } | ||||||||
16949 | |||||||||
16950 | /// Are we in a context that is potentially constant evaluated per C++20 | ||||||||
16951 | /// [expr.const]p12? | ||||||||
16952 | static bool isPotentiallyConstantEvaluatedContext(Sema &SemaRef) { | ||||||||
16953 | /// C++2a [expr.const]p12: | ||||||||
16954 | // An expression or conversion is potentially constant evaluated if it is | ||||||||
16955 | switch (SemaRef.ExprEvalContexts.back().Context) { | ||||||||
16956 | case Sema::ExpressionEvaluationContext::ConstantEvaluated: | ||||||||
16957 | // -- a manifestly constant-evaluated expression, | ||||||||
16958 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluated: | ||||||||
16959 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||||||
16960 | case Sema::ExpressionEvaluationContext::DiscardedStatement: | ||||||||
16961 | // -- a potentially-evaluated expression, | ||||||||
16962 | case Sema::ExpressionEvaluationContext::UnevaluatedList: | ||||||||
16963 | // -- an immediate subexpression of a braced-init-list, | ||||||||
16964 | |||||||||
16965 | // -- [FIXME] an expression of the form & cast-expression that occurs | ||||||||
16966 | // within a templated entity | ||||||||
16967 | // -- a subexpression of one of the above that is not a subexpression of | ||||||||
16968 | // a nested unevaluated operand. | ||||||||
16969 | return true; | ||||||||
16970 | |||||||||
16971 | case Sema::ExpressionEvaluationContext::Unevaluated: | ||||||||
16972 | case Sema::ExpressionEvaluationContext::UnevaluatedAbstract: | ||||||||
16973 | // Expressions in this context are never evaluated. | ||||||||
16974 | return false; | ||||||||
16975 | } | ||||||||
16976 | llvm_unreachable("Invalid context")::llvm::llvm_unreachable_internal("Invalid context", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 16976); | ||||||||
16977 | } | ||||||||
16978 | |||||||||
16979 | /// Return true if this function has a calling convention that requires mangling | ||||||||
16980 | /// in the size of the parameter pack. | ||||||||
16981 | static bool funcHasParameterSizeMangling(Sema &S, FunctionDecl *FD) { | ||||||||
16982 | // These manglings don't do anything on non-Windows or non-x86 platforms, so | ||||||||
16983 | // we don't need parameter type sizes. | ||||||||
16984 | const llvm::Triple &TT = S.Context.getTargetInfo().getTriple(); | ||||||||
16985 | if (!TT.isOSWindows() || !TT.isX86()) | ||||||||
16986 | return false; | ||||||||
16987 | |||||||||
16988 | // If this is C++ and this isn't an extern "C" function, parameters do not | ||||||||
16989 | // need to be complete. In this case, C++ mangling will apply, which doesn't | ||||||||
16990 | // use the size of the parameters. | ||||||||
16991 | if (S.getLangOpts().CPlusPlus && !FD->isExternC()) | ||||||||
16992 | return false; | ||||||||
16993 | |||||||||
16994 | // Stdcall, fastcall, and vectorcall need this special treatment. | ||||||||
16995 | CallingConv CC = FD->getType()->castAs<FunctionType>()->getCallConv(); | ||||||||
16996 | switch (CC) { | ||||||||
16997 | case CC_X86StdCall: | ||||||||
16998 | case CC_X86FastCall: | ||||||||
16999 | case CC_X86VectorCall: | ||||||||
17000 | return true; | ||||||||
17001 | default: | ||||||||
17002 | break; | ||||||||
17003 | } | ||||||||
17004 | return false; | ||||||||
17005 | } | ||||||||
17006 | |||||||||
17007 | /// Require that all of the parameter types of function be complete. Normally, | ||||||||
17008 | /// parameter types are only required to be complete when a function is called | ||||||||
17009 | /// or defined, but to mangle functions with certain calling conventions, the | ||||||||
17010 | /// mangler needs to know the size of the parameter list. In this situation, | ||||||||
17011 | /// MSVC doesn't emit an error or instantiate templates. Instead, MSVC mangles | ||||||||
17012 | /// the function as _foo@0, i.e. zero bytes of parameters, which will usually | ||||||||
17013 | /// result in a linker error. Clang doesn't implement this behavior, and instead | ||||||||
17014 | /// attempts to error at compile time. | ||||||||
17015 | static void CheckCompleteParameterTypesForMangler(Sema &S, FunctionDecl *FD, | ||||||||
17016 | SourceLocation Loc) { | ||||||||
17017 | class ParamIncompleteTypeDiagnoser : public Sema::TypeDiagnoser { | ||||||||
17018 | FunctionDecl *FD; | ||||||||
17019 | ParmVarDecl *Param; | ||||||||
17020 | |||||||||
17021 | public: | ||||||||
17022 | ParamIncompleteTypeDiagnoser(FunctionDecl *FD, ParmVarDecl *Param) | ||||||||
17023 | : FD(FD), Param(Param) {} | ||||||||
17024 | |||||||||
17025 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
17026 | CallingConv CC = FD->getType()->castAs<FunctionType>()->getCallConv(); | ||||||||
17027 | StringRef CCName; | ||||||||
17028 | switch (CC) { | ||||||||
17029 | case CC_X86StdCall: | ||||||||
17030 | CCName = "stdcall"; | ||||||||
17031 | break; | ||||||||
17032 | case CC_X86FastCall: | ||||||||
17033 | CCName = "fastcall"; | ||||||||
17034 | break; | ||||||||
17035 | case CC_X86VectorCall: | ||||||||
17036 | CCName = "vectorcall"; | ||||||||
17037 | break; | ||||||||
17038 | default: | ||||||||
17039 | llvm_unreachable("CC does not need mangling")::llvm::llvm_unreachable_internal("CC does not need mangling" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 17039); | ||||||||
17040 | } | ||||||||
17041 | |||||||||
17042 | S.Diag(Loc, diag::err_cconv_incomplete_param_type) | ||||||||
17043 | << Param->getDeclName() << FD->getDeclName() << CCName; | ||||||||
17044 | } | ||||||||
17045 | }; | ||||||||
17046 | |||||||||
17047 | for (ParmVarDecl *Param : FD->parameters()) { | ||||||||
17048 | ParamIncompleteTypeDiagnoser Diagnoser(FD, Param); | ||||||||
17049 | S.RequireCompleteType(Loc, Param->getType(), Diagnoser); | ||||||||
17050 | } | ||||||||
17051 | } | ||||||||
17052 | |||||||||
17053 | namespace { | ||||||||
17054 | enum class OdrUseContext { | ||||||||
17055 | /// Declarations in this context are not odr-used. | ||||||||
17056 | None, | ||||||||
17057 | /// Declarations in this context are formally odr-used, but this is a | ||||||||
17058 | /// dependent context. | ||||||||
17059 | Dependent, | ||||||||
17060 | /// Declarations in this context are odr-used but not actually used (yet). | ||||||||
17061 | FormallyOdrUsed, | ||||||||
17062 | /// Declarations in this context are used. | ||||||||
17063 | Used | ||||||||
17064 | }; | ||||||||
17065 | } | ||||||||
17066 | |||||||||
17067 | /// Are we within a context in which references to resolved functions or to | ||||||||
17068 | /// variables result in odr-use? | ||||||||
17069 | static OdrUseContext isOdrUseContext(Sema &SemaRef) { | ||||||||
17070 | OdrUseContext Result; | ||||||||
17071 | |||||||||
17072 | switch (SemaRef.ExprEvalContexts.back().Context) { | ||||||||
17073 | case Sema::ExpressionEvaluationContext::Unevaluated: | ||||||||
17074 | case Sema::ExpressionEvaluationContext::UnevaluatedList: | ||||||||
17075 | case Sema::ExpressionEvaluationContext::UnevaluatedAbstract: | ||||||||
17076 | return OdrUseContext::None; | ||||||||
17077 | |||||||||
17078 | case Sema::ExpressionEvaluationContext::ConstantEvaluated: | ||||||||
17079 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluated: | ||||||||
17080 | Result = OdrUseContext::Used; | ||||||||
17081 | break; | ||||||||
17082 | |||||||||
17083 | case Sema::ExpressionEvaluationContext::DiscardedStatement: | ||||||||
17084 | Result = OdrUseContext::FormallyOdrUsed; | ||||||||
17085 | break; | ||||||||
17086 | |||||||||
17087 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||||||
17088 | // A default argument formally results in odr-use, but doesn't actually | ||||||||
17089 | // result in a use in any real sense until it itself is used. | ||||||||
17090 | Result = OdrUseContext::FormallyOdrUsed; | ||||||||
17091 | break; | ||||||||
17092 | } | ||||||||
17093 | |||||||||
17094 | if (SemaRef.CurContext->isDependentContext()) | ||||||||
17095 | return OdrUseContext::Dependent; | ||||||||
17096 | |||||||||
17097 | return Result; | ||||||||
17098 | } | ||||||||
17099 | |||||||||
17100 | static bool isImplicitlyDefinableConstexprFunction(FunctionDecl *Func) { | ||||||||
17101 | if (!Func->isConstexpr()) | ||||||||
17102 | return false; | ||||||||
17103 | |||||||||
17104 | if (Func->isImplicitlyInstantiable() || !Func->isUserProvided()) | ||||||||
17105 | return true; | ||||||||
17106 | auto *CCD = dyn_cast<CXXConstructorDecl>(Func); | ||||||||
17107 | return CCD && CCD->getInheritedConstructor(); | ||||||||
17108 | } | ||||||||
17109 | |||||||||
17110 | /// Mark a function referenced, and check whether it is odr-used | ||||||||
17111 | /// (C++ [basic.def.odr]p2, C99 6.9p3) | ||||||||
17112 | void Sema::MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func, | ||||||||
17113 | bool MightBeOdrUse) { | ||||||||
17114 | assert(Func && "No function?")(static_cast <bool> (Func && "No function?") ? void (0) : __assert_fail ("Func && \"No function?\"", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 17114, __extension__ __PRETTY_FUNCTION__)); | ||||||||
17115 | |||||||||
17116 | Func->setReferenced(); | ||||||||
17117 | |||||||||
17118 | // Recursive functions aren't really used until they're used from some other | ||||||||
17119 | // context. | ||||||||
17120 | bool IsRecursiveCall = CurContext == Func; | ||||||||
17121 | |||||||||
17122 | // C++11 [basic.def.odr]p3: | ||||||||
17123 | // A function whose name appears as a potentially-evaluated expression is | ||||||||
17124 | // odr-used if it is the unique lookup result or the selected member of a | ||||||||
17125 | // set of overloaded functions [...]. | ||||||||
17126 | // | ||||||||
17127 | // We (incorrectly) mark overload resolution as an unevaluated context, so we | ||||||||
17128 | // can just check that here. | ||||||||
17129 | OdrUseContext OdrUse = | ||||||||
17130 | MightBeOdrUse ? isOdrUseContext(*this) : OdrUseContext::None; | ||||||||
17131 | if (IsRecursiveCall && OdrUse == OdrUseContext::Used) | ||||||||
17132 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||||||
17133 | |||||||||
17134 | // Trivial default constructors and destructors are never actually used. | ||||||||
17135 | // FIXME: What about other special members? | ||||||||
17136 | if (Func->isTrivial() && !Func->hasAttr<DLLExportAttr>() && | ||||||||
17137 | OdrUse == OdrUseContext::Used) { | ||||||||
17138 | if (auto *Constructor = dyn_cast<CXXConstructorDecl>(Func)) | ||||||||
17139 | if (Constructor->isDefaultConstructor()) | ||||||||
17140 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||||||
17141 | if (isa<CXXDestructorDecl>(Func)) | ||||||||
17142 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||||||
17143 | } | ||||||||
17144 | |||||||||
17145 | // C++20 [expr.const]p12: | ||||||||
17146 | // A function [...] is needed for constant evaluation if it is [...] a | ||||||||
17147 | // constexpr function that is named by an expression that is potentially | ||||||||
17148 | // constant evaluated | ||||||||
17149 | bool NeededForConstantEvaluation = | ||||||||
17150 | isPotentiallyConstantEvaluatedContext(*this) && | ||||||||
17151 | isImplicitlyDefinableConstexprFunction(Func); | ||||||||
17152 | |||||||||
17153 | // Determine whether we require a function definition to exist, per | ||||||||
17154 | // C++11 [temp.inst]p3: | ||||||||
17155 | // Unless a function template specialization has been explicitly | ||||||||
17156 | // instantiated or explicitly specialized, the function template | ||||||||
17157 | // specialization is implicitly instantiated when the specialization is | ||||||||
17158 | // referenced in a context that requires a function definition to exist. | ||||||||
17159 | // C++20 [temp.inst]p7: | ||||||||
17160 | // The existence of a definition of a [...] function is considered to | ||||||||
17161 | // affect the semantics of the program if the [...] function is needed for | ||||||||
17162 | // constant evaluation by an expression | ||||||||
17163 | // C++20 [basic.def.odr]p10: | ||||||||
17164 | // Every program shall contain exactly one definition of every non-inline | ||||||||
17165 | // function or variable that is odr-used in that program outside of a | ||||||||
17166 | // discarded statement | ||||||||
17167 | // C++20 [special]p1: | ||||||||
17168 | // The implementation will implicitly define [defaulted special members] | ||||||||
17169 | // if they are odr-used or needed for constant evaluation. | ||||||||
17170 | // | ||||||||
17171 | // Note that we skip the implicit instantiation of templates that are only | ||||||||
17172 | // used in unused default arguments or by recursive calls to themselves. | ||||||||
17173 | // This is formally non-conforming, but seems reasonable in practice. | ||||||||
17174 | bool NeedDefinition = !IsRecursiveCall && (OdrUse == OdrUseContext::Used || | ||||||||
17175 | NeededForConstantEvaluation); | ||||||||
17176 | |||||||||
17177 | // C++14 [temp.expl.spec]p6: | ||||||||
17178 | // If a template [...] is explicitly specialized then that specialization | ||||||||
17179 | // shall be declared before the first use of that specialization that would | ||||||||
17180 | // cause an implicit instantiation to take place, in every translation unit | ||||||||
17181 | // in which such a use occurs | ||||||||
17182 | if (NeedDefinition && | ||||||||
17183 | (Func->getTemplateSpecializationKind() != TSK_Undeclared || | ||||||||
17184 | Func->getMemberSpecializationInfo())) | ||||||||
17185 | checkSpecializationVisibility(Loc, Func); | ||||||||
17186 | |||||||||
17187 | if (getLangOpts().CUDA) | ||||||||
17188 | CheckCUDACall(Loc, Func); | ||||||||
17189 | |||||||||
17190 | if (getLangOpts().SYCLIsDevice) | ||||||||
17191 | checkSYCLDeviceFunction(Loc, Func); | ||||||||
17192 | |||||||||
17193 | // If we need a definition, try to create one. | ||||||||
17194 | if (NeedDefinition && !Func->getBody()) { | ||||||||
17195 | runWithSufficientStackSpace(Loc, [&] { | ||||||||
17196 | if (CXXConstructorDecl *Constructor = | ||||||||
17197 | dyn_cast<CXXConstructorDecl>(Func)) { | ||||||||
17198 | Constructor = cast<CXXConstructorDecl>(Constructor->getFirstDecl()); | ||||||||
17199 | if (Constructor->isDefaulted() && !Constructor->isDeleted()) { | ||||||||
17200 | if (Constructor->isDefaultConstructor()) { | ||||||||
17201 | if (Constructor->isTrivial() && | ||||||||
17202 | !Constructor->hasAttr<DLLExportAttr>()) | ||||||||
17203 | return; | ||||||||
17204 | DefineImplicitDefaultConstructor(Loc, Constructor); | ||||||||
17205 | } else if (Constructor->isCopyConstructor()) { | ||||||||
17206 | DefineImplicitCopyConstructor(Loc, Constructor); | ||||||||
17207 | } else if (Constructor->isMoveConstructor()) { | ||||||||
17208 | DefineImplicitMoveConstructor(Loc, Constructor); | ||||||||
17209 | } | ||||||||
17210 | } else if (Constructor->getInheritedConstructor()) { | ||||||||
17211 | DefineInheritingConstructor(Loc, Constructor); | ||||||||
17212 | } | ||||||||
17213 | } else if (CXXDestructorDecl *Destructor = | ||||||||
17214 | dyn_cast<CXXDestructorDecl>(Func)) { | ||||||||
17215 | Destructor = cast<CXXDestructorDecl>(Destructor->getFirstDecl()); | ||||||||
17216 | if (Destructor->isDefaulted() && !Destructor->isDeleted()) { | ||||||||
17217 | if (Destructor->isTrivial() && !Destructor->hasAttr<DLLExportAttr>()) | ||||||||
17218 | return; | ||||||||
17219 | DefineImplicitDestructor(Loc, Destructor); | ||||||||
17220 | } | ||||||||
17221 | if (Destructor->isVirtual() && getLangOpts().AppleKext) | ||||||||
17222 | MarkVTableUsed(Loc, Destructor->getParent()); | ||||||||
17223 | } else if (CXXMethodDecl *MethodDecl = dyn_cast<CXXMethodDecl>(Func)) { | ||||||||
17224 | if (MethodDecl->isOverloadedOperator() && | ||||||||
17225 | MethodDecl->getOverloadedOperator() == OO_Equal) { | ||||||||
17226 | MethodDecl = cast<CXXMethodDecl>(MethodDecl->getFirstDecl()); | ||||||||
17227 | if (MethodDecl->isDefaulted() && !MethodDecl->isDeleted()) { | ||||||||
17228 | if (MethodDecl->isCopyAssignmentOperator()) | ||||||||
17229 | DefineImplicitCopyAssignment(Loc, MethodDecl); | ||||||||
17230 | else if (MethodDecl->isMoveAssignmentOperator()) | ||||||||
17231 | DefineImplicitMoveAssignment(Loc, MethodDecl); | ||||||||
17232 | } | ||||||||
17233 | } else if (isa<CXXConversionDecl>(MethodDecl) && | ||||||||
17234 | MethodDecl->getParent()->isLambda()) { | ||||||||
17235 | CXXConversionDecl *Conversion = | ||||||||
17236 | cast<CXXConversionDecl>(MethodDecl->getFirstDecl()); | ||||||||
17237 | if (Conversion->isLambdaToBlockPointerConversion()) | ||||||||
17238 | DefineImplicitLambdaToBlockPointerConversion(Loc, Conversion); | ||||||||
17239 | else | ||||||||
17240 | DefineImplicitLambdaToFunctionPointerConversion(Loc, Conversion); | ||||||||
17241 | } else if (MethodDecl->isVirtual() && getLangOpts().AppleKext) | ||||||||
17242 | MarkVTableUsed(Loc, MethodDecl->getParent()); | ||||||||
17243 | } | ||||||||
17244 | |||||||||
17245 | if (Func->isDefaulted() && !Func->isDeleted()) { | ||||||||
17246 | DefaultedComparisonKind DCK = getDefaultedComparisonKind(Func); | ||||||||
17247 | if (DCK != DefaultedComparisonKind::None) | ||||||||
17248 | DefineDefaultedComparison(Loc, Func, DCK); | ||||||||
17249 | } | ||||||||
17250 | |||||||||
17251 | // Implicit instantiation of function templates and member functions of | ||||||||
17252 | // class templates. | ||||||||
17253 | if (Func->isImplicitlyInstantiable()) { | ||||||||
17254 | TemplateSpecializationKind TSK = | ||||||||
17255 | Func->getTemplateSpecializationKindForInstantiation(); | ||||||||
17256 | SourceLocation PointOfInstantiation = Func->getPointOfInstantiation(); | ||||||||
17257 | bool FirstInstantiation = PointOfInstantiation.isInvalid(); | ||||||||
17258 | if (FirstInstantiation) { | ||||||||
17259 | PointOfInstantiation = Loc; | ||||||||
17260 | if (auto *MSI = Func->getMemberSpecializationInfo()) | ||||||||
17261 | MSI->setPointOfInstantiation(Loc); | ||||||||
17262 | // FIXME: Notify listener. | ||||||||
17263 | else | ||||||||
17264 | Func->setTemplateSpecializationKind(TSK, PointOfInstantiation); | ||||||||
17265 | } else if (TSK != TSK_ImplicitInstantiation) { | ||||||||
17266 | // Use the point of use as the point of instantiation, instead of the | ||||||||
17267 | // point of explicit instantiation (which we track as the actual point | ||||||||
17268 | // of instantiation). This gives better backtraces in diagnostics. | ||||||||
17269 | PointOfInstantiation = Loc; | ||||||||
17270 | } | ||||||||
17271 | |||||||||
17272 | if (FirstInstantiation || TSK != TSK_ImplicitInstantiation || | ||||||||
17273 | Func->isConstexpr()) { | ||||||||
17274 | if (isa<CXXRecordDecl>(Func->getDeclContext()) && | ||||||||
17275 | cast<CXXRecordDecl>(Func->getDeclContext())->isLocalClass() && | ||||||||
17276 | CodeSynthesisContexts.size()) | ||||||||
17277 | PendingLocalImplicitInstantiations.push_back( | ||||||||
17278 | std::make_pair(Func, PointOfInstantiation)); | ||||||||
17279 | else if (Func->isConstexpr()) | ||||||||
17280 | // Do not defer instantiations of constexpr functions, to avoid the | ||||||||
17281 | // expression evaluator needing to call back into Sema if it sees a | ||||||||
17282 | // call to such a function. | ||||||||
17283 | InstantiateFunctionDefinition(PointOfInstantiation, Func); | ||||||||
17284 | else { | ||||||||
17285 | Func->setInstantiationIsPending(true); | ||||||||
17286 | PendingInstantiations.push_back( | ||||||||
17287 | std::make_pair(Func, PointOfInstantiation)); | ||||||||
17288 | // Notify the consumer that a function was implicitly instantiated. | ||||||||
17289 | Consumer.HandleCXXImplicitFunctionInstantiation(Func); | ||||||||
17290 | } | ||||||||
17291 | } | ||||||||
17292 | } else { | ||||||||
17293 | // Walk redefinitions, as some of them may be instantiable. | ||||||||
17294 | for (auto i : Func->redecls()) { | ||||||||
17295 | if (!i->isUsed(false) && i->isImplicitlyInstantiable()) | ||||||||
17296 | MarkFunctionReferenced(Loc, i, MightBeOdrUse); | ||||||||
17297 | } | ||||||||
17298 | } | ||||||||
17299 | }); | ||||||||
17300 | } | ||||||||
17301 | |||||||||
17302 | // C++14 [except.spec]p17: | ||||||||
17303 | // An exception-specification is considered to be needed when: | ||||||||
17304 | // - the function is odr-used or, if it appears in an unevaluated operand, | ||||||||
17305 | // would be odr-used if the expression were potentially-evaluated; | ||||||||
17306 | // | ||||||||
17307 | // Note, we do this even if MightBeOdrUse is false. That indicates that the | ||||||||
17308 | // function is a pure virtual function we're calling, and in that case the | ||||||||
17309 | // function was selected by overload resolution and we need to resolve its | ||||||||
17310 | // exception specification for a different reason. | ||||||||
17311 | const FunctionProtoType *FPT = Func->getType()->getAs<FunctionProtoType>(); | ||||||||
17312 | if (FPT && isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) | ||||||||
17313 | ResolveExceptionSpec(Loc, FPT); | ||||||||
17314 | |||||||||
17315 | // If this is the first "real" use, act on that. | ||||||||
17316 | if (OdrUse == OdrUseContext::Used && !Func->isUsed(/*CheckUsedAttr=*/false)) { | ||||||||
17317 | // Keep track of used but undefined functions. | ||||||||
17318 | if (!Func->isDefined()) { | ||||||||
17319 | if (mightHaveNonExternalLinkage(Func)) | ||||||||
17320 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||||||
17321 | else if (Func->getMostRecentDecl()->isInlined() && | ||||||||
17322 | !LangOpts.GNUInline && | ||||||||
17323 | !Func->getMostRecentDecl()->hasAttr<GNUInlineAttr>()) | ||||||||
17324 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||||||
17325 | else if (isExternalWithNoLinkageType(Func)) | ||||||||
17326 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||||||
17327 | } | ||||||||
17328 | |||||||||
17329 | // Some x86 Windows calling conventions mangle the size of the parameter | ||||||||
17330 | // pack into the name. Computing the size of the parameters requires the | ||||||||
17331 | // parameter types to be complete. Check that now. | ||||||||
17332 | if (funcHasParameterSizeMangling(*this, Func)) | ||||||||
17333 | CheckCompleteParameterTypesForMangler(*this, Func, Loc); | ||||||||
17334 | |||||||||
17335 | // In the MS C++ ABI, the compiler emits destructor variants where they are | ||||||||
17336 | // used. If the destructor is used here but defined elsewhere, mark the | ||||||||
17337 | // virtual base destructors referenced. If those virtual base destructors | ||||||||
17338 | // are inline, this will ensure they are defined when emitting the complete | ||||||||
17339 | // destructor variant. This checking may be redundant if the destructor is | ||||||||
17340 | // provided later in this TU. | ||||||||
17341 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) { | ||||||||
17342 | if (auto *Dtor = dyn_cast<CXXDestructorDecl>(Func)) { | ||||||||
17343 | CXXRecordDecl *Parent = Dtor->getParent(); | ||||||||
17344 | if (Parent->getNumVBases() > 0 && !Dtor->getBody()) | ||||||||
17345 | CheckCompleteDestructorVariant(Loc, Dtor); | ||||||||
17346 | } | ||||||||
17347 | } | ||||||||
17348 | |||||||||
17349 | Func->markUsed(Context); | ||||||||
17350 | } | ||||||||
17351 | } | ||||||||
17352 | |||||||||
17353 | /// Directly mark a variable odr-used. Given a choice, prefer to use | ||||||||
17354 | /// MarkVariableReferenced since it does additional checks and then | ||||||||
17355 | /// calls MarkVarDeclODRUsed. | ||||||||
17356 | /// If the variable must be captured: | ||||||||
17357 | /// - if FunctionScopeIndexToStopAt is null, capture it in the CurContext | ||||||||
17358 | /// - else capture it in the DeclContext that maps to the | ||||||||
17359 | /// *FunctionScopeIndexToStopAt on the FunctionScopeInfo stack. | ||||||||
17360 | static void | ||||||||
17361 | MarkVarDeclODRUsed(VarDecl *Var, SourceLocation Loc, Sema &SemaRef, | ||||||||
17362 | const unsigned *const FunctionScopeIndexToStopAt = nullptr) { | ||||||||
17363 | // Keep track of used but undefined variables. | ||||||||
17364 | // FIXME: We shouldn't suppress this warning for static data members. | ||||||||
17365 | if (Var->hasDefinition(SemaRef.Context) == VarDecl::DeclarationOnly && | ||||||||
17366 | (!Var->isExternallyVisible() || Var->isInline() || | ||||||||
17367 | SemaRef.isExternalWithNoLinkageType(Var)) && | ||||||||
17368 | !(Var->isStaticDataMember() && Var->hasInit())) { | ||||||||
17369 | SourceLocation &old = SemaRef.UndefinedButUsed[Var->getCanonicalDecl()]; | ||||||||
17370 | if (old.isInvalid()) | ||||||||
17371 | old = Loc; | ||||||||
17372 | } | ||||||||
17373 | QualType CaptureType, DeclRefType; | ||||||||
17374 | if (SemaRef.LangOpts.OpenMP) | ||||||||
17375 | SemaRef.tryCaptureOpenMPLambdas(Var); | ||||||||
17376 | SemaRef.tryCaptureVariable(Var, Loc, Sema::TryCapture_Implicit, | ||||||||
17377 | /*EllipsisLoc*/ SourceLocation(), | ||||||||
17378 | /*BuildAndDiagnose*/ true, | ||||||||
17379 | CaptureType, DeclRefType, | ||||||||
17380 | FunctionScopeIndexToStopAt); | ||||||||
17381 | |||||||||
17382 | if (SemaRef.LangOpts.CUDA && Var && Var->hasGlobalStorage()) { | ||||||||
17383 | auto *FD = dyn_cast_or_null<FunctionDecl>(SemaRef.CurContext); | ||||||||
17384 | auto VarTarget = SemaRef.IdentifyCUDATarget(Var); | ||||||||
17385 | auto UserTarget = SemaRef.IdentifyCUDATarget(FD); | ||||||||
17386 | if (VarTarget == Sema::CVT_Host && | ||||||||
17387 | (UserTarget == Sema::CFT_Device || UserTarget == Sema::CFT_HostDevice || | ||||||||
17388 | UserTarget == Sema::CFT_Global)) { | ||||||||
17389 | // Diagnose ODR-use of host global variables in device functions. | ||||||||
17390 | // Reference of device global variables in host functions is allowed | ||||||||
17391 | // through shadow variables therefore it is not diagnosed. | ||||||||
17392 | if (SemaRef.LangOpts.CUDAIsDevice) { | ||||||||
17393 | SemaRef.targetDiag(Loc, diag::err_ref_bad_target) | ||||||||
17394 | << /*host*/ 2 << /*variable*/ 1 << Var << UserTarget; | ||||||||
17395 | SemaRef.targetDiag(Var->getLocation(), | ||||||||
17396 | Var->getType().isConstQualified() | ||||||||
17397 | ? diag::note_cuda_const_var_unpromoted | ||||||||
17398 | : diag::note_cuda_host_var); | ||||||||
17399 | } | ||||||||
17400 | } else if (VarTarget == Sema::CVT_Device && | ||||||||
17401 | (UserTarget == Sema::CFT_Host || | ||||||||
17402 | UserTarget == Sema::CFT_HostDevice) && | ||||||||
17403 | !Var->hasExternalStorage()) { | ||||||||
17404 | // Record a CUDA/HIP device side variable if it is ODR-used | ||||||||
17405 | // by host code. This is done conservatively, when the variable is | ||||||||
17406 | // referenced in any of the following contexts: | ||||||||
17407 | // - a non-function context | ||||||||
17408 | // - a host function | ||||||||
17409 | // - a host device function | ||||||||
17410 | // This makes the ODR-use of the device side variable by host code to | ||||||||
17411 | // be visible in the device compilation for the compiler to be able to | ||||||||
17412 | // emit template variables instantiated by host code only and to | ||||||||
17413 | // externalize the static device side variable ODR-used by host code. | ||||||||
17414 | SemaRef.getASTContext().CUDADeviceVarODRUsedByHost.insert(Var); | ||||||||
17415 | } | ||||||||
17416 | } | ||||||||
17417 | |||||||||
17418 | Var->markUsed(SemaRef.Context); | ||||||||
17419 | } | ||||||||
17420 | |||||||||
17421 | void Sema::MarkCaptureUsedInEnclosingContext(VarDecl *Capture, | ||||||||
17422 | SourceLocation Loc, | ||||||||
17423 | unsigned CapturingScopeIndex) { | ||||||||
17424 | MarkVarDeclODRUsed(Capture, Loc, *this, &CapturingScopeIndex); | ||||||||
17425 | } | ||||||||
17426 | |||||||||
17427 | static void | ||||||||
17428 | diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, | ||||||||
17429 | ValueDecl *var, DeclContext *DC) { | ||||||||
17430 | DeclContext *VarDC = var->getDeclContext(); | ||||||||
17431 | |||||||||
17432 | // If the parameter still belongs to the translation unit, then | ||||||||
17433 | // we're actually just using one parameter in the declaration of | ||||||||
17434 | // the next. | ||||||||
17435 | if (isa<ParmVarDecl>(var) && | ||||||||
17436 | isa<TranslationUnitDecl>(VarDC)) | ||||||||
17437 | return; | ||||||||
17438 | |||||||||
17439 | // For C code, don't diagnose about capture if we're not actually in code | ||||||||
17440 | // right now; it's impossible to write a non-constant expression outside of | ||||||||
17441 | // function context, so we'll get other (more useful) diagnostics later. | ||||||||
17442 | // | ||||||||
17443 | // For C++, things get a bit more nasty... it would be nice to suppress this | ||||||||
17444 | // diagnostic for certain cases like using a local variable in an array bound | ||||||||
17445 | // for a member of a local class, but the correct predicate is not obvious. | ||||||||
17446 | if (!S.getLangOpts().CPlusPlus && !S.CurContext->isFunctionOrMethod()) | ||||||||
17447 | return; | ||||||||
17448 | |||||||||
17449 | unsigned ValueKind = isa<BindingDecl>(var) ? 1 : 0; | ||||||||
17450 | unsigned ContextKind = 3; // unknown | ||||||||
17451 | if (isa<CXXMethodDecl>(VarDC) && | ||||||||
17452 | cast<CXXRecordDecl>(VarDC->getParent())->isLambda()) { | ||||||||
17453 | ContextKind = 2; | ||||||||
17454 | } else if (isa<FunctionDecl>(VarDC)) { | ||||||||
17455 | ContextKind = 0; | ||||||||
17456 | } else if (isa<BlockDecl>(VarDC)) { | ||||||||
17457 | ContextKind = 1; | ||||||||
17458 | } | ||||||||
17459 | |||||||||
17460 | S.Diag(loc, diag::err_reference_to_local_in_enclosing_context) | ||||||||
17461 | << var << ValueKind << ContextKind << VarDC; | ||||||||
17462 | S.Diag(var->getLocation(), diag::note_entity_declared_at) | ||||||||
17463 | << var; | ||||||||
17464 | |||||||||
17465 | // FIXME: Add additional diagnostic info about class etc. which prevents | ||||||||
17466 | // capture. | ||||||||
17467 | } | ||||||||
17468 | |||||||||
17469 | |||||||||
17470 | static bool isVariableAlreadyCapturedInScopeInfo(CapturingScopeInfo *CSI, VarDecl *Var, | ||||||||
17471 | bool &SubCapturesAreNested, | ||||||||
17472 | QualType &CaptureType, | ||||||||
17473 | QualType &DeclRefType) { | ||||||||
17474 | // Check whether we've already captured it. | ||||||||
17475 | if (CSI->CaptureMap.count(Var)) { | ||||||||
17476 | // If we found a capture, any subcaptures are nested. | ||||||||
17477 | SubCapturesAreNested = true; | ||||||||
17478 | |||||||||
17479 | // Retrieve the capture type for this variable. | ||||||||
17480 | CaptureType = CSI->getCapture(Var).getCaptureType(); | ||||||||
17481 | |||||||||
17482 | // Compute the type of an expression that refers to this variable. | ||||||||
17483 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
17484 | |||||||||
17485 | // Similarly to mutable captures in lambda, all the OpenMP captures by copy | ||||||||
17486 | // are mutable in the sense that user can change their value - they are | ||||||||
17487 | // private instances of the captured declarations. | ||||||||
17488 | const Capture &Cap = CSI->getCapture(Var); | ||||||||
17489 | if (Cap.isCopyCapture() && | ||||||||
17490 | !(isa<LambdaScopeInfo>(CSI) && cast<LambdaScopeInfo>(CSI)->Mutable) && | ||||||||
17491 | !(isa<CapturedRegionScopeInfo>(CSI) && | ||||||||
17492 | cast<CapturedRegionScopeInfo>(CSI)->CapRegionKind == CR_OpenMP)) | ||||||||
17493 | DeclRefType.addConst(); | ||||||||
17494 | return true; | ||||||||
17495 | } | ||||||||
17496 | return false; | ||||||||
17497 | } | ||||||||
17498 | |||||||||
17499 | // Only block literals, captured statements, and lambda expressions can | ||||||||
17500 | // capture; other scopes don't work. | ||||||||
17501 | static DeclContext *getParentOfCapturingContextOrNull(DeclContext *DC, VarDecl *Var, | ||||||||
17502 | SourceLocation Loc, | ||||||||
17503 | const bool Diagnose, Sema &S) { | ||||||||
17504 | if (isa<BlockDecl>(DC) || isa<CapturedDecl>(DC) || isLambdaCallOperator(DC)) | ||||||||
17505 | return getLambdaAwareParentOfDeclContext(DC); | ||||||||
17506 | else if (Var->hasLocalStorage()) { | ||||||||
17507 | if (Diagnose) | ||||||||
17508 | diagnoseUncapturableValueReference(S, Loc, Var, DC); | ||||||||
17509 | } | ||||||||
17510 | return nullptr; | ||||||||
17511 | } | ||||||||
17512 | |||||||||
17513 | // Certain capturing entities (lambdas, blocks etc.) are not allowed to capture | ||||||||
17514 | // certain types of variables (unnamed, variably modified types etc.) | ||||||||
17515 | // so check for eligibility. | ||||||||
17516 | static bool isVariableCapturable(CapturingScopeInfo *CSI, VarDecl *Var, | ||||||||
17517 | SourceLocation Loc, | ||||||||
17518 | const bool Diagnose, Sema &S) { | ||||||||
17519 | |||||||||
17520 | bool IsBlock = isa<BlockScopeInfo>(CSI); | ||||||||
17521 | bool IsLambda = isa<LambdaScopeInfo>(CSI); | ||||||||
17522 | |||||||||
17523 | // Lambdas are not allowed to capture unnamed variables | ||||||||
17524 | // (e.g. anonymous unions). | ||||||||
17525 | // FIXME: The C++11 rule don't actually state this explicitly, but I'm | ||||||||
17526 | // assuming that's the intent. | ||||||||
17527 | if (IsLambda && !Var->getDeclName()) { | ||||||||
17528 | if (Diagnose) { | ||||||||
17529 | S.Diag(Loc, diag::err_lambda_capture_anonymous_var); | ||||||||
17530 | S.Diag(Var->getLocation(), diag::note_declared_at); | ||||||||
17531 | } | ||||||||
17532 | return false; | ||||||||
17533 | } | ||||||||
17534 | |||||||||
17535 | // Prohibit variably-modified types in blocks; they're difficult to deal with. | ||||||||
17536 | if (Var->getType()->isVariablyModifiedType() && IsBlock) { | ||||||||
17537 | if (Diagnose) { | ||||||||
17538 | S.Diag(Loc, diag::err_ref_vm_type); | ||||||||
17539 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
17540 | } | ||||||||
17541 | return false; | ||||||||
17542 | } | ||||||||
17543 | // Prohibit structs with flexible array members too. | ||||||||
17544 | // We cannot capture what is in the tail end of the struct. | ||||||||
17545 | if (const RecordType *VTTy = Var->getType()->getAs<RecordType>()) { | ||||||||
17546 | if (VTTy->getDecl()->hasFlexibleArrayMember()) { | ||||||||
17547 | if (Diagnose) { | ||||||||
17548 | if (IsBlock) | ||||||||
17549 | S.Diag(Loc, diag::err_ref_flexarray_type); | ||||||||
17550 | else | ||||||||
17551 | S.Diag(Loc, diag::err_lambda_capture_flexarray_type) << Var; | ||||||||
17552 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
17553 | } | ||||||||
17554 | return false; | ||||||||
17555 | } | ||||||||
17556 | } | ||||||||
17557 | const bool HasBlocksAttr = Var->hasAttr<BlocksAttr>(); | ||||||||
17558 | // Lambdas and captured statements are not allowed to capture __block | ||||||||
17559 | // variables; they don't support the expected semantics. | ||||||||
17560 | if (HasBlocksAttr && (IsLambda || isa<CapturedRegionScopeInfo>(CSI))) { | ||||||||
17561 | if (Diagnose) { | ||||||||
17562 | S.Diag(Loc, diag::err_capture_block_variable) << Var << !IsLambda; | ||||||||
17563 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
17564 | } | ||||||||
17565 | return false; | ||||||||
17566 | } | ||||||||
17567 | // OpenCL v2.0 s6.12.5: Blocks cannot reference/capture other blocks | ||||||||
17568 | if (S.getLangOpts().OpenCL && IsBlock && | ||||||||
17569 | Var->getType()->isBlockPointerType()) { | ||||||||
17570 | if (Diagnose) | ||||||||
17571 | S.Diag(Loc, diag::err_opencl_block_ref_block); | ||||||||
17572 | return false; | ||||||||
17573 | } | ||||||||
17574 | |||||||||
17575 | return true; | ||||||||
17576 | } | ||||||||
17577 | |||||||||
17578 | // Returns true if the capture by block was successful. | ||||||||
17579 | static bool captureInBlock(BlockScopeInfo *BSI, VarDecl *Var, | ||||||||
17580 | SourceLocation Loc, | ||||||||
17581 | const bool BuildAndDiagnose, | ||||||||
17582 | QualType &CaptureType, | ||||||||
17583 | QualType &DeclRefType, | ||||||||
17584 | const bool Nested, | ||||||||
17585 | Sema &S, bool Invalid) { | ||||||||
17586 | bool ByRef = false; | ||||||||
17587 | |||||||||
17588 | // Blocks are not allowed to capture arrays, excepting OpenCL. | ||||||||
17589 | // OpenCL v2.0 s1.12.5 (revision 40): arrays are captured by reference | ||||||||
17590 | // (decayed to pointers). | ||||||||
17591 | if (!Invalid && !S.getLangOpts().OpenCL && CaptureType->isArrayType()) { | ||||||||
17592 | if (BuildAndDiagnose) { | ||||||||
17593 | S.Diag(Loc, diag::err_ref_array_type); | ||||||||
17594 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
17595 | Invalid = true; | ||||||||
17596 | } else { | ||||||||
17597 | return false; | ||||||||
17598 | } | ||||||||
17599 | } | ||||||||
17600 | |||||||||
17601 | // Forbid the block-capture of autoreleasing variables. | ||||||||
17602 | if (!Invalid && | ||||||||
17603 | CaptureType.getObjCLifetime() == Qualifiers::OCL_Autoreleasing) { | ||||||||
17604 | if (BuildAndDiagnose) { | ||||||||
17605 | S.Diag(Loc, diag::err_arc_autoreleasing_capture) | ||||||||
17606 | << /*block*/ 0; | ||||||||
17607 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
17608 | Invalid = true; | ||||||||
17609 | } else { | ||||||||
17610 | return false; | ||||||||
17611 | } | ||||||||
17612 | } | ||||||||
17613 | |||||||||
17614 | // Warn about implicitly autoreleasing indirect parameters captured by blocks. | ||||||||
17615 | if (const auto *PT = CaptureType->getAs<PointerType>()) { | ||||||||
17616 | QualType PointeeTy = PT->getPointeeType(); | ||||||||
17617 | |||||||||
17618 | if (!Invalid && PointeeTy->getAs<ObjCObjectPointerType>() && | ||||||||
17619 | PointeeTy.getObjCLifetime() == Qualifiers::OCL_Autoreleasing && | ||||||||
17620 | !S.Context.hasDirectOwnershipQualifier(PointeeTy)) { | ||||||||
17621 | if (BuildAndDiagnose) { | ||||||||
17622 | SourceLocation VarLoc = Var->getLocation(); | ||||||||
17623 | S.Diag(Loc, diag::warn_block_capture_autoreleasing); | ||||||||
17624 | S.Diag(VarLoc, diag::note_declare_parameter_strong); | ||||||||
17625 | } | ||||||||
17626 | } | ||||||||
17627 | } | ||||||||
17628 | |||||||||
17629 | const bool HasBlocksAttr = Var->hasAttr<BlocksAttr>(); | ||||||||
17630 | if (HasBlocksAttr || CaptureType->isReferenceType() || | ||||||||
17631 | (S.getLangOpts().OpenMP && S.isOpenMPCapturedDecl(Var))) { | ||||||||
17632 | // Block capture by reference does not change the capture or | ||||||||
17633 | // declaration reference types. | ||||||||
17634 | ByRef = true; | ||||||||
17635 | } else { | ||||||||
17636 | // Block capture by copy introduces 'const'. | ||||||||
17637 | CaptureType = CaptureType.getNonReferenceType().withConst(); | ||||||||
17638 | DeclRefType = CaptureType; | ||||||||
17639 | } | ||||||||
17640 | |||||||||
17641 | // Actually capture the variable. | ||||||||
17642 | if (BuildAndDiagnose) | ||||||||
17643 | BSI->addCapture(Var, HasBlocksAttr, ByRef, Nested, Loc, SourceLocation(), | ||||||||
17644 | CaptureType, Invalid); | ||||||||
17645 | |||||||||
17646 | return !Invalid; | ||||||||
17647 | } | ||||||||
17648 | |||||||||
17649 | |||||||||
17650 | /// Capture the given variable in the captured region. | ||||||||
17651 | static bool captureInCapturedRegion( | ||||||||
17652 | CapturedRegionScopeInfo *RSI, VarDecl *Var, SourceLocation Loc, | ||||||||
17653 | const bool BuildAndDiagnose, QualType &CaptureType, QualType &DeclRefType, | ||||||||
17654 | const bool RefersToCapturedVariable, Sema::TryCaptureKind Kind, | ||||||||
17655 | bool IsTopScope, Sema &S, bool Invalid) { | ||||||||
17656 | // By default, capture variables by reference. | ||||||||
17657 | bool ByRef = true; | ||||||||
17658 | if (IsTopScope && Kind != Sema::TryCapture_Implicit) { | ||||||||
17659 | ByRef = (Kind == Sema::TryCapture_ExplicitByRef); | ||||||||
17660 | } else if (S.getLangOpts().OpenMP && RSI->CapRegionKind == CR_OpenMP) { | ||||||||
17661 | // Using an LValue reference type is consistent with Lambdas (see below). | ||||||||
17662 | if (S.isOpenMPCapturedDecl(Var)) { | ||||||||
17663 | bool HasConst = DeclRefType.isConstQualified(); | ||||||||
17664 | DeclRefType = DeclRefType.getUnqualifiedType(); | ||||||||
17665 | // Don't lose diagnostics about assignments to const. | ||||||||
17666 | if (HasConst) | ||||||||
17667 | DeclRefType.addConst(); | ||||||||
17668 | } | ||||||||
17669 | // Do not capture firstprivates in tasks. | ||||||||
17670 | if (S.isOpenMPPrivateDecl(Var, RSI->OpenMPLevel, RSI->OpenMPCaptureLevel) != | ||||||||
17671 | OMPC_unknown) | ||||||||
17672 | return true; | ||||||||
17673 | ByRef = S.isOpenMPCapturedByRef(Var, RSI->OpenMPLevel, | ||||||||
17674 | RSI->OpenMPCaptureLevel); | ||||||||
17675 | } | ||||||||
17676 | |||||||||
17677 | if (ByRef) | ||||||||
17678 | CaptureType = S.Context.getLValueReferenceType(DeclRefType); | ||||||||
17679 | else | ||||||||
17680 | CaptureType = DeclRefType; | ||||||||
17681 | |||||||||
17682 | // Actually capture the variable. | ||||||||
17683 | if (BuildAndDiagnose) | ||||||||
17684 | RSI->addCapture(Var, /*isBlock*/ false, ByRef, RefersToCapturedVariable, | ||||||||
17685 | Loc, SourceLocation(), CaptureType, Invalid); | ||||||||
17686 | |||||||||
17687 | return !Invalid; | ||||||||
17688 | } | ||||||||
17689 | |||||||||
17690 | /// Capture the given variable in the lambda. | ||||||||
17691 | static bool captureInLambda(LambdaScopeInfo *LSI, | ||||||||
17692 | VarDecl *Var, | ||||||||
17693 | SourceLocation Loc, | ||||||||
17694 | const bool BuildAndDiagnose, | ||||||||
17695 | QualType &CaptureType, | ||||||||
17696 | QualType &DeclRefType, | ||||||||
17697 | const bool RefersToCapturedVariable, | ||||||||
17698 | const Sema::TryCaptureKind Kind, | ||||||||
17699 | SourceLocation EllipsisLoc, | ||||||||
17700 | const bool IsTopScope, | ||||||||
17701 | Sema &S, bool Invalid) { | ||||||||
17702 | // Determine whether we are capturing by reference or by value. | ||||||||
17703 | bool ByRef = false; | ||||||||
17704 | if (IsTopScope && Kind != Sema::TryCapture_Implicit) { | ||||||||
17705 | ByRef = (Kind == Sema::TryCapture_ExplicitByRef); | ||||||||
17706 | } else { | ||||||||
17707 | ByRef = (LSI->ImpCaptureStyle == LambdaScopeInfo::ImpCap_LambdaByref); | ||||||||
17708 | } | ||||||||
17709 | |||||||||
17710 | // Compute the type of the field that will capture this variable. | ||||||||
17711 | if (ByRef) { | ||||||||
17712 | // C++11 [expr.prim.lambda]p15: | ||||||||
17713 | // An entity is captured by reference if it is implicitly or | ||||||||
17714 | // explicitly captured but not captured by copy. It is | ||||||||
17715 | // unspecified whether additional unnamed non-static data | ||||||||
17716 | // members are declared in the closure type for entities | ||||||||
17717 | // captured by reference. | ||||||||
17718 | // | ||||||||
17719 | // FIXME: It is not clear whether we want to build an lvalue reference | ||||||||
17720 | // to the DeclRefType or to CaptureType.getNonReferenceType(). GCC appears | ||||||||
17721 | // to do the former, while EDG does the latter. Core issue 1249 will | ||||||||
17722 | // clarify, but for now we follow GCC because it's a more permissive and | ||||||||
17723 | // easily defensible position. | ||||||||
17724 | CaptureType = S.Context.getLValueReferenceType(DeclRefType); | ||||||||
17725 | } else { | ||||||||
17726 | // C++11 [expr.prim.lambda]p14: | ||||||||
17727 | // For each entity captured by copy, an unnamed non-static | ||||||||
17728 | // data member is declared in the closure type. The | ||||||||
17729 | // declaration order of these members is unspecified. The type | ||||||||
17730 | // of such a data member is the type of the corresponding | ||||||||
17731 | // captured entity if the entity is not a reference to an | ||||||||
17732 | // object, or the referenced type otherwise. [Note: If the | ||||||||
17733 | // captured entity is a reference to a function, the | ||||||||
17734 | // corresponding data member is also a reference to a | ||||||||
17735 | // function. - end note ] | ||||||||
17736 | if (const ReferenceType *RefType = CaptureType->getAs<ReferenceType>()){ | ||||||||
17737 | if (!RefType->getPointeeType()->isFunctionType()) | ||||||||
17738 | CaptureType = RefType->getPointeeType(); | ||||||||
17739 | } | ||||||||
17740 | |||||||||
17741 | // Forbid the lambda copy-capture of autoreleasing variables. | ||||||||
17742 | if (!Invalid && | ||||||||
17743 | CaptureType.getObjCLifetime() == Qualifiers::OCL_Autoreleasing) { | ||||||||
17744 | if (BuildAndDiagnose) { | ||||||||
17745 | S.Diag(Loc, diag::err_arc_autoreleasing_capture) << /*lambda*/ 1; | ||||||||
17746 | S.Diag(Var->getLocation(), diag::note_previous_decl) | ||||||||
17747 | << Var->getDeclName(); | ||||||||
17748 | Invalid = true; | ||||||||
17749 | } else { | ||||||||
17750 | return false; | ||||||||
17751 | } | ||||||||
17752 | } | ||||||||
17753 | |||||||||
17754 | // Make sure that by-copy captures are of a complete and non-abstract type. | ||||||||
17755 | if (!Invalid && BuildAndDiagnose) { | ||||||||
17756 | if (!CaptureType->isDependentType() && | ||||||||
17757 | S.RequireCompleteSizedType( | ||||||||
17758 | Loc, CaptureType, | ||||||||
17759 | diag::err_capture_of_incomplete_or_sizeless_type, | ||||||||
17760 | Var->getDeclName())) | ||||||||
17761 | Invalid = true; | ||||||||
17762 | else if (S.RequireNonAbstractType(Loc, CaptureType, | ||||||||
17763 | diag::err_capture_of_abstract_type)) | ||||||||
17764 | Invalid = true; | ||||||||
17765 | } | ||||||||
17766 | } | ||||||||
17767 | |||||||||
17768 | // Compute the type of a reference to this captured variable. | ||||||||
17769 | if (ByRef) | ||||||||
17770 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
17771 | else { | ||||||||
17772 | // C++ [expr.prim.lambda]p5: | ||||||||
17773 | // The closure type for a lambda-expression has a public inline | ||||||||
17774 | // function call operator [...]. This function call operator is | ||||||||
17775 | // declared const (9.3.1) if and only if the lambda-expression's | ||||||||
17776 | // parameter-declaration-clause is not followed by mutable. | ||||||||
17777 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
17778 | if (!LSI->Mutable && !CaptureType->isReferenceType()) | ||||||||
17779 | DeclRefType.addConst(); | ||||||||
17780 | } | ||||||||
17781 | |||||||||
17782 | // Add the capture. | ||||||||
17783 | if (BuildAndDiagnose) | ||||||||
17784 | LSI->addCapture(Var, /*isBlock=*/false, ByRef, RefersToCapturedVariable, | ||||||||
17785 | Loc, EllipsisLoc, CaptureType, Invalid); | ||||||||
17786 | |||||||||
17787 | return !Invalid; | ||||||||
17788 | } | ||||||||
17789 | |||||||||
17790 | static bool canCaptureVariableByCopy(VarDecl *Var, const ASTContext &Context) { | ||||||||
17791 | // Offer a Copy fix even if the type is dependent. | ||||||||
17792 | if (Var->getType()->isDependentType()) | ||||||||
17793 | return true; | ||||||||
17794 | QualType T = Var->getType().getNonReferenceType(); | ||||||||
17795 | if (T.isTriviallyCopyableType(Context)) | ||||||||
17796 | return true; | ||||||||
17797 | if (CXXRecordDecl *RD = T->getAsCXXRecordDecl()) { | ||||||||
17798 | |||||||||
17799 | if (!(RD = RD->getDefinition())) | ||||||||
17800 | return false; | ||||||||
17801 | if (RD->hasSimpleCopyConstructor()) | ||||||||
17802 | return true; | ||||||||
17803 | if (RD->hasUserDeclaredCopyConstructor()) | ||||||||
17804 | for (CXXConstructorDecl *Ctor : RD->ctors()) | ||||||||
17805 | if (Ctor->isCopyConstructor()) | ||||||||
17806 | return !Ctor->isDeleted(); | ||||||||
17807 | } | ||||||||
17808 | return false; | ||||||||
17809 | } | ||||||||
17810 | |||||||||
17811 | /// Create up to 4 fix-its for explicit reference and value capture of \p Var or | ||||||||
17812 | /// default capture. Fixes may be omitted if they aren't allowed by the | ||||||||
17813 | /// standard, for example we can't emit a default copy capture fix-it if we | ||||||||
17814 | /// already explicitly copy capture capture another variable. | ||||||||
17815 | static void buildLambdaCaptureFixit(Sema &Sema, LambdaScopeInfo *LSI, | ||||||||
17816 | VarDecl *Var) { | ||||||||
17817 | assert(LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None)(static_cast <bool> (LSI->ImpCaptureStyle == CapturingScopeInfo ::ImpCap_None) ? void (0) : __assert_fail ("LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 17817, __extension__ __PRETTY_FUNCTION__)); | ||||||||
17818 | // Don't offer Capture by copy of default capture by copy fixes if Var is | ||||||||
17819 | // known not to be copy constructible. | ||||||||
17820 | bool ShouldOfferCopyFix = canCaptureVariableByCopy(Var, Sema.getASTContext()); | ||||||||
17821 | |||||||||
17822 | SmallString<32> FixBuffer; | ||||||||
17823 | StringRef Separator = LSI->NumExplicitCaptures > 0 ? ", " : ""; | ||||||||
17824 | if (Var->getDeclName().isIdentifier() && !Var->getName().empty()) { | ||||||||
17825 | SourceLocation VarInsertLoc = LSI->IntroducerRange.getEnd(); | ||||||||
17826 | if (ShouldOfferCopyFix) { | ||||||||
17827 | // Offer fixes to insert an explicit capture for the variable. | ||||||||
17828 | // [] -> [VarName] | ||||||||
17829 | // [OtherCapture] -> [OtherCapture, VarName] | ||||||||
17830 | FixBuffer.assign({Separator, Var->getName()}); | ||||||||
17831 | Sema.Diag(VarInsertLoc, diag::note_lambda_variable_capture_fixit) | ||||||||
17832 | << Var << /*value*/ 0 | ||||||||
17833 | << FixItHint::CreateInsertion(VarInsertLoc, FixBuffer); | ||||||||
17834 | } | ||||||||
17835 | // As above but capture by reference. | ||||||||
17836 | FixBuffer.assign({Separator, "&", Var->getName()}); | ||||||||
17837 | Sema.Diag(VarInsertLoc, diag::note_lambda_variable_capture_fixit) | ||||||||
17838 | << Var << /*reference*/ 1 | ||||||||
17839 | << FixItHint::CreateInsertion(VarInsertLoc, FixBuffer); | ||||||||
17840 | } | ||||||||
17841 | |||||||||
17842 | // Only try to offer default capture if there are no captures excluding this | ||||||||
17843 | // and init captures. | ||||||||
17844 | // [this]: OK. | ||||||||
17845 | // [X = Y]: OK. | ||||||||
17846 | // [&A, &B]: Don't offer. | ||||||||
17847 | // [A, B]: Don't offer. | ||||||||
17848 | if (llvm::any_of(LSI->Captures, [](Capture &C) { | ||||||||
17849 | return !C.isThisCapture() && !C.isInitCapture(); | ||||||||
17850 | })) | ||||||||
17851 | return; | ||||||||
17852 | |||||||||
17853 | // The default capture specifiers, '=' or '&', must appear first in the | ||||||||
17854 | // capture body. | ||||||||
17855 | SourceLocation DefaultInsertLoc = | ||||||||
17856 | LSI->IntroducerRange.getBegin().getLocWithOffset(1); | ||||||||
17857 | |||||||||
17858 | if (ShouldOfferCopyFix) { | ||||||||
17859 | bool CanDefaultCopyCapture = true; | ||||||||
17860 | // [=, *this] OK since c++17 | ||||||||
17861 | // [=, this] OK since c++20 | ||||||||
17862 | if (LSI->isCXXThisCaptured() && !Sema.getLangOpts().CPlusPlus20) | ||||||||
17863 | CanDefaultCopyCapture = Sema.getLangOpts().CPlusPlus17 | ||||||||
17864 | ? LSI->getCXXThisCapture().isCopyCapture() | ||||||||
17865 | : false; | ||||||||
17866 | // We can't use default capture by copy if any captures already specified | ||||||||
17867 | // capture by copy. | ||||||||
17868 | if (CanDefaultCopyCapture && llvm::none_of(LSI->Captures, [](Capture &C) { | ||||||||
17869 | return !C.isThisCapture() && !C.isInitCapture() && C.isCopyCapture(); | ||||||||
17870 | })) { | ||||||||
17871 | FixBuffer.assign({"=", Separator}); | ||||||||
17872 | Sema.Diag(DefaultInsertLoc, diag::note_lambda_default_capture_fixit) | ||||||||
17873 | << /*value*/ 0 | ||||||||
17874 | << FixItHint::CreateInsertion(DefaultInsertLoc, FixBuffer); | ||||||||
17875 | } | ||||||||
17876 | } | ||||||||
17877 | |||||||||
17878 | // We can't use default capture by reference if any captures already specified | ||||||||
17879 | // capture by reference. | ||||||||
17880 | if (llvm::none_of(LSI->Captures, [](Capture &C) { | ||||||||
17881 | return !C.isInitCapture() && C.isReferenceCapture() && | ||||||||
17882 | !C.isThisCapture(); | ||||||||
17883 | })) { | ||||||||
17884 | FixBuffer.assign({"&", Separator}); | ||||||||
17885 | Sema.Diag(DefaultInsertLoc, diag::note_lambda_default_capture_fixit) | ||||||||
17886 | << /*reference*/ 1 | ||||||||
17887 | << FixItHint::CreateInsertion(DefaultInsertLoc, FixBuffer); | ||||||||
17888 | } | ||||||||
17889 | } | ||||||||
17890 | |||||||||
17891 | bool Sema::tryCaptureVariable( | ||||||||
17892 | VarDecl *Var, SourceLocation ExprLoc, TryCaptureKind Kind, | ||||||||
17893 | SourceLocation EllipsisLoc, bool BuildAndDiagnose, QualType &CaptureType, | ||||||||
17894 | QualType &DeclRefType, const unsigned *const FunctionScopeIndexToStopAt) { | ||||||||
17895 | // An init-capture is notionally from the context surrounding its | ||||||||
17896 | // declaration, but its parent DC is the lambda class. | ||||||||
17897 | DeclContext *VarDC = Var->getDeclContext(); | ||||||||
17898 | if (Var->isInitCapture()) | ||||||||
17899 | VarDC = VarDC->getParent(); | ||||||||
17900 | |||||||||
17901 | DeclContext *DC = CurContext; | ||||||||
17902 | const unsigned MaxFunctionScopesIndex = FunctionScopeIndexToStopAt | ||||||||
17903 | ? *FunctionScopeIndexToStopAt : FunctionScopes.size() - 1; | ||||||||
17904 | // We need to sync up the Declaration Context with the | ||||||||
17905 | // FunctionScopeIndexToStopAt | ||||||||
17906 | if (FunctionScopeIndexToStopAt) { | ||||||||
17907 | unsigned FSIndex = FunctionScopes.size() - 1; | ||||||||
17908 | while (FSIndex != MaxFunctionScopesIndex) { | ||||||||
17909 | DC = getLambdaAwareParentOfDeclContext(DC); | ||||||||
17910 | --FSIndex; | ||||||||
17911 | } | ||||||||
17912 | } | ||||||||
17913 | |||||||||
17914 | |||||||||
17915 | // If the variable is declared in the current context, there is no need to | ||||||||
17916 | // capture it. | ||||||||
17917 | if (VarDC == DC) return true; | ||||||||
17918 | |||||||||
17919 | // Capture global variables if it is required to use private copy of this | ||||||||
17920 | // variable. | ||||||||
17921 | bool IsGlobal = !Var->hasLocalStorage(); | ||||||||
17922 | if (IsGlobal && | ||||||||
17923 | !(LangOpts.OpenMP && isOpenMPCapturedDecl(Var, /*CheckScopeInfo=*/true, | ||||||||
17924 | MaxFunctionScopesIndex))) | ||||||||
17925 | return true; | ||||||||
17926 | Var = Var->getCanonicalDecl(); | ||||||||
17927 | |||||||||
17928 | // Walk up the stack to determine whether we can capture the variable, | ||||||||
17929 | // performing the "simple" checks that don't depend on type. We stop when | ||||||||
17930 | // we've either hit the declared scope of the variable or find an existing | ||||||||
17931 | // capture of that variable. We start from the innermost capturing-entity | ||||||||
17932 | // (the DC) and ensure that all intervening capturing-entities | ||||||||
17933 | // (blocks/lambdas etc.) between the innermost capturer and the variable`s | ||||||||
17934 | // declcontext can either capture the variable or have already captured | ||||||||
17935 | // the variable. | ||||||||
17936 | CaptureType = Var->getType(); | ||||||||
17937 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
17938 | bool Nested = false; | ||||||||
17939 | bool Explicit = (Kind != TryCapture_Implicit); | ||||||||
17940 | unsigned FunctionScopesIndex = MaxFunctionScopesIndex; | ||||||||
17941 | do { | ||||||||
17942 | // Only block literals, captured statements, and lambda expressions can | ||||||||
17943 | // capture; other scopes don't work. | ||||||||
17944 | DeclContext *ParentDC = getParentOfCapturingContextOrNull(DC, Var, | ||||||||
17945 | ExprLoc, | ||||||||
17946 | BuildAndDiagnose, | ||||||||
17947 | *this); | ||||||||
17948 | // We need to check for the parent *first* because, if we *have* | ||||||||
17949 | // private-captured a global variable, we need to recursively capture it in | ||||||||
17950 | // intermediate blocks, lambdas, etc. | ||||||||
17951 | if (!ParentDC) { | ||||||||
17952 | if (IsGlobal) { | ||||||||
17953 | FunctionScopesIndex = MaxFunctionScopesIndex - 1; | ||||||||
17954 | break; | ||||||||
17955 | } | ||||||||
17956 | return true; | ||||||||
17957 | } | ||||||||
17958 | |||||||||
17959 | FunctionScopeInfo *FSI = FunctionScopes[FunctionScopesIndex]; | ||||||||
17960 | CapturingScopeInfo *CSI = cast<CapturingScopeInfo>(FSI); | ||||||||
17961 | |||||||||
17962 | |||||||||
17963 | // Check whether we've already captured it. | ||||||||
17964 | if (isVariableAlreadyCapturedInScopeInfo(CSI, Var, Nested, CaptureType, | ||||||||
17965 | DeclRefType)) { | ||||||||
17966 | CSI->getCapture(Var).markUsed(BuildAndDiagnose); | ||||||||
17967 | break; | ||||||||
17968 | } | ||||||||
17969 | // If we are instantiating a generic lambda call operator body, | ||||||||
17970 | // we do not want to capture new variables. What was captured | ||||||||
17971 | // during either a lambdas transformation or initial parsing | ||||||||
17972 | // should be used. | ||||||||
17973 | if (isGenericLambdaCallOperatorSpecialization(DC)) { | ||||||||
17974 | if (BuildAndDiagnose) { | ||||||||
17975 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(CSI); | ||||||||
17976 | if (LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None) { | ||||||||
17977 | Diag(ExprLoc, diag::err_lambda_impcap) << Var; | ||||||||
17978 | Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
17979 | Diag(LSI->Lambda->getBeginLoc(), diag::note_lambda_decl); | ||||||||
17980 | buildLambdaCaptureFixit(*this, LSI, Var); | ||||||||
17981 | } else | ||||||||
17982 | diagnoseUncapturableValueReference(*this, ExprLoc, Var, DC); | ||||||||
17983 | } | ||||||||
17984 | return true; | ||||||||
17985 | } | ||||||||
17986 | |||||||||
17987 | // Try to capture variable-length arrays types. | ||||||||
17988 | if (Var->getType()->isVariablyModifiedType()) { | ||||||||
17989 | // We're going to walk down into the type and look for VLA | ||||||||
17990 | // expressions. | ||||||||
17991 | QualType QTy = Var->getType(); | ||||||||
17992 | if (ParmVarDecl *PVD = dyn_cast_or_null<ParmVarDecl>(Var)) | ||||||||
17993 | QTy = PVD->getOriginalType(); | ||||||||
17994 | captureVariablyModifiedType(Context, QTy, CSI); | ||||||||
17995 | } | ||||||||
17996 | |||||||||
17997 | if (getLangOpts().OpenMP) { | ||||||||
17998 | if (auto *RSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) { | ||||||||
17999 | // OpenMP private variables should not be captured in outer scope, so | ||||||||
18000 | // just break here. Similarly, global variables that are captured in a | ||||||||
18001 | // target region should not be captured outside the scope of the region. | ||||||||
18002 | if (RSI->CapRegionKind == CR_OpenMP) { | ||||||||
18003 | OpenMPClauseKind IsOpenMPPrivateDecl = isOpenMPPrivateDecl( | ||||||||
18004 | Var, RSI->OpenMPLevel, RSI->OpenMPCaptureLevel); | ||||||||
18005 | // If the variable is private (i.e. not captured) and has variably | ||||||||
18006 | // modified type, we still need to capture the type for correct | ||||||||
18007 | // codegen in all regions, associated with the construct. Currently, | ||||||||
18008 | // it is captured in the innermost captured region only. | ||||||||
18009 | if (IsOpenMPPrivateDecl != OMPC_unknown && | ||||||||
18010 | Var->getType()->isVariablyModifiedType()) { | ||||||||
18011 | QualType QTy = Var->getType(); | ||||||||
18012 | if (ParmVarDecl *PVD = dyn_cast_or_null<ParmVarDecl>(Var)) | ||||||||
18013 | QTy = PVD->getOriginalType(); | ||||||||
18014 | for (int I = 1, E = getNumberOfConstructScopes(RSI->OpenMPLevel); | ||||||||
18015 | I < E; ++I) { | ||||||||
18016 | auto *OuterRSI = cast<CapturedRegionScopeInfo>( | ||||||||
18017 | FunctionScopes[FunctionScopesIndex - I]); | ||||||||
18018 | assert(RSI->OpenMPLevel == OuterRSI->OpenMPLevel &&(static_cast <bool> (RSI->OpenMPLevel == OuterRSI-> OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? void (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18020, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18019 | "Wrong number of captured regions associated with the "(static_cast <bool> (RSI->OpenMPLevel == OuterRSI-> OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? void (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18020, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18020 | "OpenMP construct.")(static_cast <bool> (RSI->OpenMPLevel == OuterRSI-> OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? void (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18020, __extension__ __PRETTY_FUNCTION__)); | ||||||||
18021 | captureVariablyModifiedType(Context, QTy, OuterRSI); | ||||||||
18022 | } | ||||||||
18023 | } | ||||||||
18024 | bool IsTargetCap = | ||||||||
18025 | IsOpenMPPrivateDecl != OMPC_private && | ||||||||
18026 | isOpenMPTargetCapturedDecl(Var, RSI->OpenMPLevel, | ||||||||
18027 | RSI->OpenMPCaptureLevel); | ||||||||
18028 | // Do not capture global if it is not privatized in outer regions. | ||||||||
18029 | bool IsGlobalCap = | ||||||||
18030 | IsGlobal && isOpenMPGlobalCapturedDecl(Var, RSI->OpenMPLevel, | ||||||||
18031 | RSI->OpenMPCaptureLevel); | ||||||||
18032 | |||||||||
18033 | // When we detect target captures we are looking from inside the | ||||||||
18034 | // target region, therefore we need to propagate the capture from the | ||||||||
18035 | // enclosing region. Therefore, the capture is not initially nested. | ||||||||
18036 | if (IsTargetCap) | ||||||||
18037 | adjustOpenMPTargetScopeIndex(FunctionScopesIndex, RSI->OpenMPLevel); | ||||||||
18038 | |||||||||
18039 | if (IsTargetCap || IsOpenMPPrivateDecl == OMPC_private || | ||||||||
18040 | (IsGlobal && !IsGlobalCap)) { | ||||||||
18041 | Nested = !IsTargetCap; | ||||||||
18042 | bool HasConst = DeclRefType.isConstQualified(); | ||||||||
18043 | DeclRefType = DeclRefType.getUnqualifiedType(); | ||||||||
18044 | // Don't lose diagnostics about assignments to const. | ||||||||
18045 | if (HasConst) | ||||||||
18046 | DeclRefType.addConst(); | ||||||||
18047 | CaptureType = Context.getLValueReferenceType(DeclRefType); | ||||||||
18048 | break; | ||||||||
18049 | } | ||||||||
18050 | } | ||||||||
18051 | } | ||||||||
18052 | } | ||||||||
18053 | if (CSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None && !Explicit) { | ||||||||
18054 | // No capture-default, and this is not an explicit capture | ||||||||
18055 | // so cannot capture this variable. | ||||||||
18056 | if (BuildAndDiagnose) { | ||||||||
18057 | Diag(ExprLoc, diag::err_lambda_impcap) << Var; | ||||||||
18058 | Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
18059 | auto *LSI = cast<LambdaScopeInfo>(CSI); | ||||||||
18060 | if (LSI->Lambda) { | ||||||||
18061 | Diag(LSI->Lambda->getBeginLoc(), diag::note_lambda_decl); | ||||||||
18062 | buildLambdaCaptureFixit(*this, LSI, Var); | ||||||||
18063 | } | ||||||||
18064 | // FIXME: If we error out because an outer lambda can not implicitly | ||||||||
18065 | // capture a variable that an inner lambda explicitly captures, we | ||||||||
18066 | // should have the inner lambda do the explicit capture - because | ||||||||
18067 | // it makes for cleaner diagnostics later. This would purely be done | ||||||||
18068 | // so that the diagnostic does not misleadingly claim that a variable | ||||||||
18069 | // can not be captured by a lambda implicitly even though it is captured | ||||||||
18070 | // explicitly. Suggestion: | ||||||||
18071 | // - create const bool VariableCaptureWasInitiallyExplicit = Explicit | ||||||||
18072 | // at the function head | ||||||||
18073 | // - cache the StartingDeclContext - this must be a lambda | ||||||||
18074 | // - captureInLambda in the innermost lambda the variable. | ||||||||
18075 | } | ||||||||
18076 | return true; | ||||||||
18077 | } | ||||||||
18078 | |||||||||
18079 | FunctionScopesIndex--; | ||||||||
18080 | DC = ParentDC; | ||||||||
18081 | Explicit = false; | ||||||||
18082 | } while (!VarDC->Equals(DC)); | ||||||||
18083 | |||||||||
18084 | // Walk back down the scope stack, (e.g. from outer lambda to inner lambda) | ||||||||
18085 | // computing the type of the capture at each step, checking type-specific | ||||||||
18086 | // requirements, and adding captures if requested. | ||||||||
18087 | // If the variable had already been captured previously, we start capturing | ||||||||
18088 | // at the lambda nested within that one. | ||||||||
18089 | bool Invalid = false; | ||||||||
18090 | for (unsigned I = ++FunctionScopesIndex, N = MaxFunctionScopesIndex + 1; I != N; | ||||||||
18091 | ++I) { | ||||||||
18092 | CapturingScopeInfo *CSI = cast<CapturingScopeInfo>(FunctionScopes[I]); | ||||||||
18093 | |||||||||
18094 | // Certain capturing entities (lambdas, blocks etc.) are not allowed to capture | ||||||||
18095 | // certain types of variables (unnamed, variably modified types etc.) | ||||||||
18096 | // so check for eligibility. | ||||||||
18097 | if (!Invalid) | ||||||||
18098 | Invalid = | ||||||||
18099 | !isVariableCapturable(CSI, Var, ExprLoc, BuildAndDiagnose, *this); | ||||||||
18100 | |||||||||
18101 | // After encountering an error, if we're actually supposed to capture, keep | ||||||||
18102 | // capturing in nested contexts to suppress any follow-on diagnostics. | ||||||||
18103 | if (Invalid && !BuildAndDiagnose) | ||||||||
18104 | return true; | ||||||||
18105 | |||||||||
18106 | if (BlockScopeInfo *BSI = dyn_cast<BlockScopeInfo>(CSI)) { | ||||||||
18107 | Invalid = !captureInBlock(BSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, | ||||||||
18108 | DeclRefType, Nested, *this, Invalid); | ||||||||
18109 | Nested = true; | ||||||||
18110 | } else if (CapturedRegionScopeInfo *RSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) { | ||||||||
18111 | Invalid = !captureInCapturedRegion( | ||||||||
18112 | RSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, DeclRefType, Nested, | ||||||||
18113 | Kind, /*IsTopScope*/ I == N - 1, *this, Invalid); | ||||||||
18114 | Nested = true; | ||||||||
18115 | } else { | ||||||||
18116 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(CSI); | ||||||||
18117 | Invalid = | ||||||||
18118 | !captureInLambda(LSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, | ||||||||
18119 | DeclRefType, Nested, Kind, EllipsisLoc, | ||||||||
18120 | /*IsTopScope*/ I == N - 1, *this, Invalid); | ||||||||
18121 | Nested = true; | ||||||||
18122 | } | ||||||||
18123 | |||||||||
18124 | if (Invalid && !BuildAndDiagnose) | ||||||||
18125 | return true; | ||||||||
18126 | } | ||||||||
18127 | return Invalid; | ||||||||
18128 | } | ||||||||
18129 | |||||||||
18130 | bool Sema::tryCaptureVariable(VarDecl *Var, SourceLocation Loc, | ||||||||
18131 | TryCaptureKind Kind, SourceLocation EllipsisLoc) { | ||||||||
18132 | QualType CaptureType; | ||||||||
18133 | QualType DeclRefType; | ||||||||
18134 | return tryCaptureVariable(Var, Loc, Kind, EllipsisLoc, | ||||||||
18135 | /*BuildAndDiagnose=*/true, CaptureType, | ||||||||
18136 | DeclRefType, nullptr); | ||||||||
18137 | } | ||||||||
18138 | |||||||||
18139 | bool Sema::NeedToCaptureVariable(VarDecl *Var, SourceLocation Loc) { | ||||||||
18140 | QualType CaptureType; | ||||||||
18141 | QualType DeclRefType; | ||||||||
18142 | return !tryCaptureVariable(Var, Loc, TryCapture_Implicit, SourceLocation(), | ||||||||
18143 | /*BuildAndDiagnose=*/false, CaptureType, | ||||||||
18144 | DeclRefType, nullptr); | ||||||||
18145 | } | ||||||||
18146 | |||||||||
18147 | QualType Sema::getCapturedDeclRefType(VarDecl *Var, SourceLocation Loc) { | ||||||||
18148 | QualType CaptureType; | ||||||||
18149 | QualType DeclRefType; | ||||||||
18150 | |||||||||
18151 | // Determine whether we can capture this variable. | ||||||||
18152 | if (tryCaptureVariable(Var, Loc, TryCapture_Implicit, SourceLocation(), | ||||||||
18153 | /*BuildAndDiagnose=*/false, CaptureType, | ||||||||
18154 | DeclRefType, nullptr)) | ||||||||
18155 | return QualType(); | ||||||||
18156 | |||||||||
18157 | return DeclRefType; | ||||||||
18158 | } | ||||||||
18159 | |||||||||
18160 | namespace { | ||||||||
18161 | // Helper to copy the template arguments from a DeclRefExpr or MemberExpr. | ||||||||
18162 | // The produced TemplateArgumentListInfo* points to data stored within this | ||||||||
18163 | // object, so should only be used in contexts where the pointer will not be | ||||||||
18164 | // used after the CopiedTemplateArgs object is destroyed. | ||||||||
18165 | class CopiedTemplateArgs { | ||||||||
18166 | bool HasArgs; | ||||||||
18167 | TemplateArgumentListInfo TemplateArgStorage; | ||||||||
18168 | public: | ||||||||
18169 | template<typename RefExpr> | ||||||||
18170 | CopiedTemplateArgs(RefExpr *E) : HasArgs(E->hasExplicitTemplateArgs()) { | ||||||||
18171 | if (HasArgs) | ||||||||
18172 | E->copyTemplateArgumentsInto(TemplateArgStorage); | ||||||||
18173 | } | ||||||||
18174 | operator TemplateArgumentListInfo*() | ||||||||
18175 | #ifdef __has_cpp_attribute | ||||||||
18176 | #if0 __has_cpp_attribute(clang::lifetimebound)1 | ||||||||
18177 | [[clang::lifetimebound]] | ||||||||
18178 | #endif | ||||||||
18179 | #endif | ||||||||
18180 | { | ||||||||
18181 | return HasArgs ? &TemplateArgStorage : nullptr; | ||||||||
18182 | } | ||||||||
18183 | }; | ||||||||
18184 | } | ||||||||
18185 | |||||||||
18186 | /// Walk the set of potential results of an expression and mark them all as | ||||||||
18187 | /// non-odr-uses if they satisfy the side-conditions of the NonOdrUseReason. | ||||||||
18188 | /// | ||||||||
18189 | /// \return A new expression if we found any potential results, ExprEmpty() if | ||||||||
18190 | /// not, and ExprError() if we diagnosed an error. | ||||||||
18191 | static ExprResult rebuildPotentialResultsAsNonOdrUsed(Sema &S, Expr *E, | ||||||||
18192 | NonOdrUseReason NOUR) { | ||||||||
18193 | // Per C++11 [basic.def.odr], a variable is odr-used "unless it is | ||||||||
18194 | // an object that satisfies the requirements for appearing in a | ||||||||
18195 | // constant expression (5.19) and the lvalue-to-rvalue conversion (4.1) | ||||||||
18196 | // is immediately applied." This function handles the lvalue-to-rvalue | ||||||||
18197 | // conversion part. | ||||||||
18198 | // | ||||||||
18199 | // If we encounter a node that claims to be an odr-use but shouldn't be, we | ||||||||
18200 | // transform it into the relevant kind of non-odr-use node and rebuild the | ||||||||
18201 | // tree of nodes leading to it. | ||||||||
18202 | // | ||||||||
18203 | // This is a mini-TreeTransform that only transforms a restricted subset of | ||||||||
18204 | // nodes (and only certain operands of them). | ||||||||
18205 | |||||||||
18206 | // Rebuild a subexpression. | ||||||||
18207 | auto Rebuild = [&](Expr *Sub) { | ||||||||
18208 | return rebuildPotentialResultsAsNonOdrUsed(S, Sub, NOUR); | ||||||||
18209 | }; | ||||||||
18210 | |||||||||
18211 | // Check whether a potential result satisfies the requirements of NOUR. | ||||||||
18212 | auto IsPotentialResultOdrUsed = [&](NamedDecl *D) { | ||||||||
18213 | // Any entity other than a VarDecl is always odr-used whenever it's named | ||||||||
18214 | // in a potentially-evaluated expression. | ||||||||
18215 | auto *VD = dyn_cast<VarDecl>(D); | ||||||||
18216 | if (!VD) | ||||||||
18217 | return true; | ||||||||
18218 | |||||||||
18219 | // C++2a [basic.def.odr]p4: | ||||||||
18220 | // A variable x whose name appears as a potentially-evalauted expression | ||||||||
18221 | // e is odr-used by e unless | ||||||||
18222 | // -- x is a reference that is usable in constant expressions, or | ||||||||
18223 | // -- x is a variable of non-reference type that is usable in constant | ||||||||
18224 | // expressions and has no mutable subobjects, and e is an element of | ||||||||
18225 | // the set of potential results of an expression of | ||||||||
18226 | // non-volatile-qualified non-class type to which the lvalue-to-rvalue | ||||||||
18227 | // conversion is applied, or | ||||||||
18228 | // -- x is a variable of non-reference type, and e is an element of the | ||||||||
18229 | // set of potential results of a discarded-value expression to which | ||||||||
18230 | // the lvalue-to-rvalue conversion is not applied | ||||||||
18231 | // | ||||||||
18232 | // We check the first bullet and the "potentially-evaluated" condition in | ||||||||
18233 | // BuildDeclRefExpr. We check the type requirements in the second bullet | ||||||||
18234 | // in CheckLValueToRValueConversionOperand below. | ||||||||
18235 | switch (NOUR) { | ||||||||
18236 | case NOUR_None: | ||||||||
18237 | case NOUR_Unevaluated: | ||||||||
18238 | llvm_unreachable("unexpected non-odr-use-reason")::llvm::llvm_unreachable_internal("unexpected non-odr-use-reason" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18238); | ||||||||
18239 | |||||||||
18240 | case NOUR_Constant: | ||||||||
18241 | // Constant references were handled when they were built. | ||||||||
18242 | if (VD->getType()->isReferenceType()) | ||||||||
18243 | return true; | ||||||||
18244 | if (auto *RD = VD->getType()->getAsCXXRecordDecl()) | ||||||||
18245 | if (RD->hasMutableFields()) | ||||||||
18246 | return true; | ||||||||
18247 | if (!VD->isUsableInConstantExpressions(S.Context)) | ||||||||
18248 | return true; | ||||||||
18249 | break; | ||||||||
18250 | |||||||||
18251 | case NOUR_Discarded: | ||||||||
18252 | if (VD->getType()->isReferenceType()) | ||||||||
18253 | return true; | ||||||||
18254 | break; | ||||||||
18255 | } | ||||||||
18256 | return false; | ||||||||
18257 | }; | ||||||||
18258 | |||||||||
18259 | // Mark that this expression does not constitute an odr-use. | ||||||||
18260 | auto MarkNotOdrUsed = [&] { | ||||||||
18261 | S.MaybeODRUseExprs.remove(E); | ||||||||
18262 | if (LambdaScopeInfo *LSI = S.getCurLambda()) | ||||||||
18263 | LSI->markVariableExprAsNonODRUsed(E); | ||||||||
18264 | }; | ||||||||
18265 | |||||||||
18266 | // C++2a [basic.def.odr]p2: | ||||||||
18267 | // The set of potential results of an expression e is defined as follows: | ||||||||
18268 | switch (E->getStmtClass()) { | ||||||||
18269 | // -- If e is an id-expression, ... | ||||||||
18270 | case Expr::DeclRefExprClass: { | ||||||||
18271 | auto *DRE = cast<DeclRefExpr>(E); | ||||||||
18272 | if (DRE->isNonOdrUse() || IsPotentialResultOdrUsed(DRE->getDecl())) | ||||||||
18273 | break; | ||||||||
18274 | |||||||||
18275 | // Rebuild as a non-odr-use DeclRefExpr. | ||||||||
18276 | MarkNotOdrUsed(); | ||||||||
18277 | return DeclRefExpr::Create( | ||||||||
18278 | S.Context, DRE->getQualifierLoc(), DRE->getTemplateKeywordLoc(), | ||||||||
18279 | DRE->getDecl(), DRE->refersToEnclosingVariableOrCapture(), | ||||||||
18280 | DRE->getNameInfo(), DRE->getType(), DRE->getValueKind(), | ||||||||
18281 | DRE->getFoundDecl(), CopiedTemplateArgs(DRE), NOUR); | ||||||||
18282 | } | ||||||||
18283 | |||||||||
18284 | case Expr::FunctionParmPackExprClass: { | ||||||||
18285 | auto *FPPE = cast<FunctionParmPackExpr>(E); | ||||||||
18286 | // If any of the declarations in the pack is odr-used, then the expression | ||||||||
18287 | // as a whole constitutes an odr-use. | ||||||||
18288 | for (VarDecl *D : *FPPE) | ||||||||
18289 | if (IsPotentialResultOdrUsed(D)) | ||||||||
18290 | return ExprEmpty(); | ||||||||
18291 | |||||||||
18292 | // FIXME: Rebuild as a non-odr-use FunctionParmPackExpr? In practice, | ||||||||
18293 | // nothing cares about whether we marked this as an odr-use, but it might | ||||||||
18294 | // be useful for non-compiler tools. | ||||||||
18295 | MarkNotOdrUsed(); | ||||||||
18296 | break; | ||||||||
18297 | } | ||||||||
18298 | |||||||||
18299 | // -- If e is a subscripting operation with an array operand... | ||||||||
18300 | case Expr::ArraySubscriptExprClass: { | ||||||||
18301 | auto *ASE = cast<ArraySubscriptExpr>(E); | ||||||||
18302 | Expr *OldBase = ASE->getBase()->IgnoreImplicit(); | ||||||||
18303 | if (!OldBase->getType()->isArrayType()) | ||||||||
18304 | break; | ||||||||
18305 | ExprResult Base = Rebuild(OldBase); | ||||||||
18306 | if (!Base.isUsable()) | ||||||||
18307 | return Base; | ||||||||
18308 | Expr *LHS = ASE->getBase() == ASE->getLHS() ? Base.get() : ASE->getLHS(); | ||||||||
18309 | Expr *RHS = ASE->getBase() == ASE->getRHS() ? Base.get() : ASE->getRHS(); | ||||||||
18310 | SourceLocation LBracketLoc = ASE->getBeginLoc(); // FIXME: Not stored. | ||||||||
18311 | return S.ActOnArraySubscriptExpr(nullptr, LHS, LBracketLoc, RHS, | ||||||||
18312 | ASE->getRBracketLoc()); | ||||||||
18313 | } | ||||||||
18314 | |||||||||
18315 | case Expr::MemberExprClass: { | ||||||||
18316 | auto *ME = cast<MemberExpr>(E); | ||||||||
18317 | // -- If e is a class member access expression [...] naming a non-static | ||||||||
18318 | // data member... | ||||||||
18319 | if (isa<FieldDecl>(ME->getMemberDecl())) { | ||||||||
18320 | ExprResult Base = Rebuild(ME->getBase()); | ||||||||
18321 | if (!Base.isUsable()) | ||||||||
18322 | return Base; | ||||||||
18323 | return MemberExpr::Create( | ||||||||
18324 | S.Context, Base.get(), ME->isArrow(), ME->getOperatorLoc(), | ||||||||
18325 | ME->getQualifierLoc(), ME->getTemplateKeywordLoc(), | ||||||||
18326 | ME->getMemberDecl(), ME->getFoundDecl(), ME->getMemberNameInfo(), | ||||||||
18327 | CopiedTemplateArgs(ME), ME->getType(), ME->getValueKind(), | ||||||||
18328 | ME->getObjectKind(), ME->isNonOdrUse()); | ||||||||
18329 | } | ||||||||
18330 | |||||||||
18331 | if (ME->getMemberDecl()->isCXXInstanceMember()) | ||||||||
18332 | break; | ||||||||
18333 | |||||||||
18334 | // -- If e is a class member access expression naming a static data member, | ||||||||
18335 | // ... | ||||||||
18336 | if (ME->isNonOdrUse() || IsPotentialResultOdrUsed(ME->getMemberDecl())) | ||||||||
18337 | break; | ||||||||
18338 | |||||||||
18339 | // Rebuild as a non-odr-use MemberExpr. | ||||||||
18340 | MarkNotOdrUsed(); | ||||||||
18341 | return MemberExpr::Create( | ||||||||
18342 | S.Context, ME->getBase(), ME->isArrow(), ME->getOperatorLoc(), | ||||||||
18343 | ME->getQualifierLoc(), ME->getTemplateKeywordLoc(), ME->getMemberDecl(), | ||||||||
18344 | ME->getFoundDecl(), ME->getMemberNameInfo(), CopiedTemplateArgs(ME), | ||||||||
18345 | ME->getType(), ME->getValueKind(), ME->getObjectKind(), NOUR); | ||||||||
18346 | } | ||||||||
18347 | |||||||||
18348 | case Expr::BinaryOperatorClass: { | ||||||||
18349 | auto *BO = cast<BinaryOperator>(E); | ||||||||
18350 | Expr *LHS = BO->getLHS(); | ||||||||
18351 | Expr *RHS = BO->getRHS(); | ||||||||
18352 | // -- If e is a pointer-to-member expression of the form e1 .* e2 ... | ||||||||
18353 | if (BO->getOpcode() == BO_PtrMemD) { | ||||||||
18354 | ExprResult Sub = Rebuild(LHS); | ||||||||
18355 | if (!Sub.isUsable()) | ||||||||
18356 | return Sub; | ||||||||
18357 | LHS = Sub.get(); | ||||||||
18358 | // -- If e is a comma expression, ... | ||||||||
18359 | } else if (BO->getOpcode() == BO_Comma) { | ||||||||
18360 | ExprResult Sub = Rebuild(RHS); | ||||||||
18361 | if (!Sub.isUsable()) | ||||||||
18362 | return Sub; | ||||||||
18363 | RHS = Sub.get(); | ||||||||
18364 | } else { | ||||||||
18365 | break; | ||||||||
18366 | } | ||||||||
18367 | return S.BuildBinOp(nullptr, BO->getOperatorLoc(), BO->getOpcode(), | ||||||||
18368 | LHS, RHS); | ||||||||
18369 | } | ||||||||
18370 | |||||||||
18371 | // -- If e has the form (e1)... | ||||||||
18372 | case Expr::ParenExprClass: { | ||||||||
18373 | auto *PE = cast<ParenExpr>(E); | ||||||||
18374 | ExprResult Sub = Rebuild(PE->getSubExpr()); | ||||||||
18375 | if (!Sub.isUsable()) | ||||||||
18376 | return Sub; | ||||||||
18377 | return S.ActOnParenExpr(PE->getLParen(), PE->getRParen(), Sub.get()); | ||||||||
18378 | } | ||||||||
18379 | |||||||||
18380 | // -- If e is a glvalue conditional expression, ... | ||||||||
18381 | // We don't apply this to a binary conditional operator. FIXME: Should we? | ||||||||
18382 | case Expr::ConditionalOperatorClass: { | ||||||||
18383 | auto *CO = cast<ConditionalOperator>(E); | ||||||||
18384 | ExprResult LHS = Rebuild(CO->getLHS()); | ||||||||
18385 | if (LHS.isInvalid()) | ||||||||
18386 | return ExprError(); | ||||||||
18387 | ExprResult RHS = Rebuild(CO->getRHS()); | ||||||||
18388 | if (RHS.isInvalid()) | ||||||||
18389 | return ExprError(); | ||||||||
18390 | if (!LHS.isUsable() && !RHS.isUsable()) | ||||||||
18391 | return ExprEmpty(); | ||||||||
18392 | if (!LHS.isUsable()) | ||||||||
18393 | LHS = CO->getLHS(); | ||||||||
18394 | if (!RHS.isUsable()) | ||||||||
18395 | RHS = CO->getRHS(); | ||||||||
18396 | return S.ActOnConditionalOp(CO->getQuestionLoc(), CO->getColonLoc(), | ||||||||
18397 | CO->getCond(), LHS.get(), RHS.get()); | ||||||||
18398 | } | ||||||||
18399 | |||||||||
18400 | // [Clang extension] | ||||||||
18401 | // -- If e has the form __extension__ e1... | ||||||||
18402 | case Expr::UnaryOperatorClass: { | ||||||||
18403 | auto *UO = cast<UnaryOperator>(E); | ||||||||
18404 | if (UO->getOpcode() != UO_Extension) | ||||||||
18405 | break; | ||||||||
18406 | ExprResult Sub = Rebuild(UO->getSubExpr()); | ||||||||
18407 | if (!Sub.isUsable()) | ||||||||
18408 | return Sub; | ||||||||
18409 | return S.BuildUnaryOp(nullptr, UO->getOperatorLoc(), UO_Extension, | ||||||||
18410 | Sub.get()); | ||||||||
18411 | } | ||||||||
18412 | |||||||||
18413 | // [Clang extension] | ||||||||
18414 | // -- If e has the form _Generic(...), the set of potential results is the | ||||||||
18415 | // union of the sets of potential results of the associated expressions. | ||||||||
18416 | case Expr::GenericSelectionExprClass: { | ||||||||
18417 | auto *GSE = cast<GenericSelectionExpr>(E); | ||||||||
18418 | |||||||||
18419 | SmallVector<Expr *, 4> AssocExprs; | ||||||||
18420 | bool AnyChanged = false; | ||||||||
18421 | for (Expr *OrigAssocExpr : GSE->getAssocExprs()) { | ||||||||
18422 | ExprResult AssocExpr = Rebuild(OrigAssocExpr); | ||||||||
18423 | if (AssocExpr.isInvalid()) | ||||||||
18424 | return ExprError(); | ||||||||
18425 | if (AssocExpr.isUsable()) { | ||||||||
18426 | AssocExprs.push_back(AssocExpr.get()); | ||||||||
18427 | AnyChanged = true; | ||||||||
18428 | } else { | ||||||||
18429 | AssocExprs.push_back(OrigAssocExpr); | ||||||||
18430 | } | ||||||||
18431 | } | ||||||||
18432 | |||||||||
18433 | return AnyChanged ? S.CreateGenericSelectionExpr( | ||||||||
18434 | GSE->getGenericLoc(), GSE->getDefaultLoc(), | ||||||||
18435 | GSE->getRParenLoc(), GSE->getControllingExpr(), | ||||||||
18436 | GSE->getAssocTypeSourceInfos(), AssocExprs) | ||||||||
18437 | : ExprEmpty(); | ||||||||
18438 | } | ||||||||
18439 | |||||||||
18440 | // [Clang extension] | ||||||||
18441 | // -- If e has the form __builtin_choose_expr(...), the set of potential | ||||||||
18442 | // results is the union of the sets of potential results of the | ||||||||
18443 | // second and third subexpressions. | ||||||||
18444 | case Expr::ChooseExprClass: { | ||||||||
18445 | auto *CE = cast<ChooseExpr>(E); | ||||||||
18446 | |||||||||
18447 | ExprResult LHS = Rebuild(CE->getLHS()); | ||||||||
18448 | if (LHS.isInvalid()) | ||||||||
18449 | return ExprError(); | ||||||||
18450 | |||||||||
18451 | ExprResult RHS = Rebuild(CE->getLHS()); | ||||||||
18452 | if (RHS.isInvalid()) | ||||||||
18453 | return ExprError(); | ||||||||
18454 | |||||||||
18455 | if (!LHS.get() && !RHS.get()) | ||||||||
18456 | return ExprEmpty(); | ||||||||
18457 | if (!LHS.isUsable()) | ||||||||
18458 | LHS = CE->getLHS(); | ||||||||
18459 | if (!RHS.isUsable()) | ||||||||
18460 | RHS = CE->getRHS(); | ||||||||
18461 | |||||||||
18462 | return S.ActOnChooseExpr(CE->getBuiltinLoc(), CE->getCond(), LHS.get(), | ||||||||
18463 | RHS.get(), CE->getRParenLoc()); | ||||||||
18464 | } | ||||||||
18465 | |||||||||
18466 | // Step through non-syntactic nodes. | ||||||||
18467 | case Expr::ConstantExprClass: { | ||||||||
18468 | auto *CE = cast<ConstantExpr>(E); | ||||||||
18469 | ExprResult Sub = Rebuild(CE->getSubExpr()); | ||||||||
18470 | if (!Sub.isUsable()) | ||||||||
18471 | return Sub; | ||||||||
18472 | return ConstantExpr::Create(S.Context, Sub.get()); | ||||||||
18473 | } | ||||||||
18474 | |||||||||
18475 | // We could mostly rely on the recursive rebuilding to rebuild implicit | ||||||||
18476 | // casts, but not at the top level, so rebuild them here. | ||||||||
18477 | case Expr::ImplicitCastExprClass: { | ||||||||
18478 | auto *ICE = cast<ImplicitCastExpr>(E); | ||||||||
18479 | // Only step through the narrow set of cast kinds we expect to encounter. | ||||||||
18480 | // Anything else suggests we've left the region in which potential results | ||||||||
18481 | // can be found. | ||||||||
18482 | switch (ICE->getCastKind()) { | ||||||||
18483 | case CK_NoOp: | ||||||||
18484 | case CK_DerivedToBase: | ||||||||
18485 | case CK_UncheckedDerivedToBase: { | ||||||||
18486 | ExprResult Sub = Rebuild(ICE->getSubExpr()); | ||||||||
18487 | if (!Sub.isUsable()) | ||||||||
18488 | return Sub; | ||||||||
18489 | CXXCastPath Path(ICE->path()); | ||||||||
18490 | return S.ImpCastExprToType(Sub.get(), ICE->getType(), ICE->getCastKind(), | ||||||||
18491 | ICE->getValueKind(), &Path); | ||||||||
18492 | } | ||||||||
18493 | |||||||||
18494 | default: | ||||||||
18495 | break; | ||||||||
18496 | } | ||||||||
18497 | break; | ||||||||
18498 | } | ||||||||
18499 | |||||||||
18500 | default: | ||||||||
18501 | break; | ||||||||
18502 | } | ||||||||
18503 | |||||||||
18504 | // Can't traverse through this node. Nothing to do. | ||||||||
18505 | return ExprEmpty(); | ||||||||
18506 | } | ||||||||
18507 | |||||||||
18508 | ExprResult Sema::CheckLValueToRValueConversionOperand(Expr *E) { | ||||||||
18509 | // Check whether the operand is or contains an object of non-trivial C union | ||||||||
18510 | // type. | ||||||||
18511 | if (E->getType().isVolatileQualified() && | ||||||||
18512 | (E->getType().hasNonTrivialToPrimitiveDestructCUnion() || | ||||||||
18513 | E->getType().hasNonTrivialToPrimitiveCopyCUnion())) | ||||||||
18514 | checkNonTrivialCUnion(E->getType(), E->getExprLoc(), | ||||||||
18515 | Sema::NTCUC_LValueToRValueVolatile, | ||||||||
18516 | NTCUK_Destruct|NTCUK_Copy); | ||||||||
18517 | |||||||||
18518 | // C++2a [basic.def.odr]p4: | ||||||||
18519 | // [...] an expression of non-volatile-qualified non-class type to which | ||||||||
18520 | // the lvalue-to-rvalue conversion is applied [...] | ||||||||
18521 | if (E->getType().isVolatileQualified() || E->getType()->getAs<RecordType>()) | ||||||||
18522 | return E; | ||||||||
18523 | |||||||||
18524 | ExprResult Result = | ||||||||
18525 | rebuildPotentialResultsAsNonOdrUsed(*this, E, NOUR_Constant); | ||||||||
18526 | if (Result.isInvalid()) | ||||||||
18527 | return ExprError(); | ||||||||
18528 | return Result.get() ? Result : E; | ||||||||
18529 | } | ||||||||
18530 | |||||||||
18531 | ExprResult Sema::ActOnConstantExpression(ExprResult Res) { | ||||||||
18532 | Res = CorrectDelayedTyposInExpr(Res); | ||||||||
18533 | |||||||||
18534 | if (!Res.isUsable()) | ||||||||
18535 | return Res; | ||||||||
18536 | |||||||||
18537 | // If a constant-expression is a reference to a variable where we delay | ||||||||
18538 | // deciding whether it is an odr-use, just assume we will apply the | ||||||||
18539 | // lvalue-to-rvalue conversion. In the one case where this doesn't happen | ||||||||
18540 | // (a non-type template argument), we have special handling anyway. | ||||||||
18541 | return CheckLValueToRValueConversionOperand(Res.get()); | ||||||||
18542 | } | ||||||||
18543 | |||||||||
18544 | void Sema::CleanupVarDeclMarking() { | ||||||||
18545 | // Iterate through a local copy in case MarkVarDeclODRUsed makes a recursive | ||||||||
18546 | // call. | ||||||||
18547 | MaybeODRUseExprSet LocalMaybeODRUseExprs; | ||||||||
18548 | std::swap(LocalMaybeODRUseExprs, MaybeODRUseExprs); | ||||||||
18549 | |||||||||
18550 | for (Expr *E : LocalMaybeODRUseExprs) { | ||||||||
18551 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||||||
18552 | MarkVarDeclODRUsed(cast<VarDecl>(DRE->getDecl()), | ||||||||
18553 | DRE->getLocation(), *this); | ||||||||
18554 | } else if (auto *ME = dyn_cast<MemberExpr>(E)) { | ||||||||
18555 | MarkVarDeclODRUsed(cast<VarDecl>(ME->getMemberDecl()), ME->getMemberLoc(), | ||||||||
18556 | *this); | ||||||||
18557 | } else if (auto *FP = dyn_cast<FunctionParmPackExpr>(E)) { | ||||||||
18558 | for (VarDecl *VD : *FP) | ||||||||
18559 | MarkVarDeclODRUsed(VD, FP->getParameterPackLocation(), *this); | ||||||||
18560 | } else { | ||||||||
18561 | llvm_unreachable("Unexpected expression")::llvm::llvm_unreachable_internal("Unexpected expression", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18561); | ||||||||
18562 | } | ||||||||
18563 | } | ||||||||
18564 | |||||||||
18565 | assert(MaybeODRUseExprs.empty() &&(static_cast <bool> (MaybeODRUseExprs.empty() && "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?") ? void (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18566, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18566 | "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?")(static_cast <bool> (MaybeODRUseExprs.empty() && "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?") ? void (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18566, __extension__ __PRETTY_FUNCTION__)); | ||||||||
18567 | } | ||||||||
18568 | |||||||||
18569 | static void DoMarkVarDeclReferenced( | ||||||||
18570 | Sema &SemaRef, SourceLocation Loc, VarDecl *Var, Expr *E, | ||||||||
18571 | llvm::DenseMap<const VarDecl *, int> &RefsMinusAssignments) { | ||||||||
18572 | assert((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) ||(static_cast <bool> ((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>( E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? void (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18574, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18573 | isa<FunctionParmPackExpr>(E)) &&(static_cast <bool> ((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>( E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? void (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18574, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18574 | "Invalid Expr argument to DoMarkVarDeclReferenced")(static_cast <bool> ((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>( E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? void (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18574, __extension__ __PRETTY_FUNCTION__)); | ||||||||
18575 | Var->setReferenced(); | ||||||||
18576 | |||||||||
18577 | if (Var->isInvalidDecl()) | ||||||||
18578 | return; | ||||||||
18579 | |||||||||
18580 | auto *MSI = Var->getMemberSpecializationInfo(); | ||||||||
18581 | TemplateSpecializationKind TSK = MSI ? MSI->getTemplateSpecializationKind() | ||||||||
18582 | : Var->getTemplateSpecializationKind(); | ||||||||
18583 | |||||||||
18584 | OdrUseContext OdrUse = isOdrUseContext(SemaRef); | ||||||||
18585 | bool UsableInConstantExpr = | ||||||||
18586 | Var->mightBeUsableInConstantExpressions(SemaRef.Context); | ||||||||
18587 | |||||||||
18588 | if (Var->isLocalVarDeclOrParm() && !Var->hasExternalStorage()) { | ||||||||
18589 | RefsMinusAssignments.insert({Var, 0}).first->getSecond()++; | ||||||||
18590 | } | ||||||||
18591 | |||||||||
18592 | // C++20 [expr.const]p12: | ||||||||
18593 | // A variable [...] is needed for constant evaluation if it is [...] a | ||||||||
18594 | // variable whose name appears as a potentially constant evaluated | ||||||||
18595 | // expression that is either a contexpr variable or is of non-volatile | ||||||||
18596 | // const-qualified integral type or of reference type | ||||||||
18597 | bool NeededForConstantEvaluation = | ||||||||
18598 | isPotentiallyConstantEvaluatedContext(SemaRef) && UsableInConstantExpr; | ||||||||
18599 | |||||||||
18600 | bool NeedDefinition = | ||||||||
18601 | OdrUse == OdrUseContext::Used || NeededForConstantEvaluation; | ||||||||
18602 | |||||||||
18603 | assert(!isa<VarTemplatePartialSpecializationDecl>(Var) &&(static_cast <bool> (!isa<VarTemplatePartialSpecializationDecl >(Var) && "Can't instantiate a partial template specialization." ) ? void (0) : __assert_fail ("!isa<VarTemplatePartialSpecializationDecl>(Var) && \"Can't instantiate a partial template specialization.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18604, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18604 | "Can't instantiate a partial template specialization.")(static_cast <bool> (!isa<VarTemplatePartialSpecializationDecl >(Var) && "Can't instantiate a partial template specialization." ) ? void (0) : __assert_fail ("!isa<VarTemplatePartialSpecializationDecl>(Var) && \"Can't instantiate a partial template specialization.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18604, __extension__ __PRETTY_FUNCTION__)); | ||||||||
18605 | |||||||||
18606 | // If this might be a member specialization of a static data member, check | ||||||||
18607 | // the specialization is visible. We already did the checks for variable | ||||||||
18608 | // template specializations when we created them. | ||||||||
18609 | if (NeedDefinition && TSK != TSK_Undeclared && | ||||||||
18610 | !isa<VarTemplateSpecializationDecl>(Var)) | ||||||||
18611 | SemaRef.checkSpecializationVisibility(Loc, Var); | ||||||||
18612 | |||||||||
18613 | // Perform implicit instantiation of static data members, static data member | ||||||||
18614 | // templates of class templates, and variable template specializations. Delay | ||||||||
18615 | // instantiations of variable templates, except for those that could be used | ||||||||
18616 | // in a constant expression. | ||||||||
18617 | if (NeedDefinition && isTemplateInstantiation(TSK)) { | ||||||||
18618 | // Per C++17 [temp.explicit]p10, we may instantiate despite an explicit | ||||||||
18619 | // instantiation declaration if a variable is usable in a constant | ||||||||
18620 | // expression (among other cases). | ||||||||
18621 | bool TryInstantiating = | ||||||||
18622 | TSK == TSK_ImplicitInstantiation || | ||||||||
18623 | (TSK == TSK_ExplicitInstantiationDeclaration && UsableInConstantExpr); | ||||||||
18624 | |||||||||
18625 | if (TryInstantiating) { | ||||||||
18626 | SourceLocation PointOfInstantiation = | ||||||||
18627 | MSI ? MSI->getPointOfInstantiation() : Var->getPointOfInstantiation(); | ||||||||
18628 | bool FirstInstantiation = PointOfInstantiation.isInvalid(); | ||||||||
18629 | if (FirstInstantiation) { | ||||||||
18630 | PointOfInstantiation = Loc; | ||||||||
18631 | if (MSI) | ||||||||
18632 | MSI->setPointOfInstantiation(PointOfInstantiation); | ||||||||
18633 | // FIXME: Notify listener. | ||||||||
18634 | else | ||||||||
18635 | Var->setTemplateSpecializationKind(TSK, PointOfInstantiation); | ||||||||
18636 | } | ||||||||
18637 | |||||||||
18638 | if (UsableInConstantExpr) { | ||||||||
18639 | // Do not defer instantiations of variables that could be used in a | ||||||||
18640 | // constant expression. | ||||||||
18641 | SemaRef.runWithSufficientStackSpace(PointOfInstantiation, [&] { | ||||||||
18642 | SemaRef.InstantiateVariableDefinition(PointOfInstantiation, Var); | ||||||||
18643 | }); | ||||||||
18644 | |||||||||
18645 | // Re-set the member to trigger a recomputation of the dependence bits | ||||||||
18646 | // for the expression. | ||||||||
18647 | if (auto *DRE = dyn_cast_or_null<DeclRefExpr>(E)) | ||||||||
18648 | DRE->setDecl(DRE->getDecl()); | ||||||||
18649 | else if (auto *ME = dyn_cast_or_null<MemberExpr>(E)) | ||||||||
18650 | ME->setMemberDecl(ME->getMemberDecl()); | ||||||||
18651 | } else if (FirstInstantiation || | ||||||||
18652 | isa<VarTemplateSpecializationDecl>(Var)) { | ||||||||
18653 | // FIXME: For a specialization of a variable template, we don't | ||||||||
18654 | // distinguish between "declaration and type implicitly instantiated" | ||||||||
18655 | // and "implicit instantiation of definition requested", so we have | ||||||||
18656 | // no direct way to avoid enqueueing the pending instantiation | ||||||||
18657 | // multiple times. | ||||||||
18658 | SemaRef.PendingInstantiations | ||||||||
18659 | .push_back(std::make_pair(Var, PointOfInstantiation)); | ||||||||
18660 | } | ||||||||
18661 | } | ||||||||
18662 | } | ||||||||
18663 | |||||||||
18664 | // C++2a [basic.def.odr]p4: | ||||||||
18665 | // A variable x whose name appears as a potentially-evaluated expression e | ||||||||
18666 | // is odr-used by e unless | ||||||||
18667 | // -- x is a reference that is usable in constant expressions | ||||||||
18668 | // -- x is a variable of non-reference type that is usable in constant | ||||||||
18669 | // expressions and has no mutable subobjects [FIXME], and e is an | ||||||||
18670 | // element of the set of potential results of an expression of | ||||||||
18671 | // non-volatile-qualified non-class type to which the lvalue-to-rvalue | ||||||||
18672 | // conversion is applied | ||||||||
18673 | // -- x is a variable of non-reference type, and e is an element of the set | ||||||||
18674 | // of potential results of a discarded-value expression to which the | ||||||||
18675 | // lvalue-to-rvalue conversion is not applied [FIXME] | ||||||||
18676 | // | ||||||||
18677 | // We check the first part of the second bullet here, and | ||||||||
18678 | // Sema::CheckLValueToRValueConversionOperand deals with the second part. | ||||||||
18679 | // FIXME: To get the third bullet right, we need to delay this even for | ||||||||
18680 | // variables that are not usable in constant expressions. | ||||||||
18681 | |||||||||
18682 | // If we already know this isn't an odr-use, there's nothing more to do. | ||||||||
18683 | if (DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(E)) | ||||||||
18684 | if (DRE->isNonOdrUse()) | ||||||||
18685 | return; | ||||||||
18686 | if (MemberExpr *ME = dyn_cast_or_null<MemberExpr>(E)) | ||||||||
18687 | if (ME->isNonOdrUse()) | ||||||||
18688 | return; | ||||||||
18689 | |||||||||
18690 | switch (OdrUse) { | ||||||||
18691 | case OdrUseContext::None: | ||||||||
18692 | assert((!E || isa<FunctionParmPackExpr>(E)) &&(static_cast <bool> ((!E || isa<FunctionParmPackExpr >(E)) && "missing non-odr-use marking for unevaluated decl ref" ) ? void (0) : __assert_fail ("(!E || isa<FunctionParmPackExpr>(E)) && \"missing non-odr-use marking for unevaluated decl ref\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18693, __extension__ __PRETTY_FUNCTION__)) | ||||||||
18693 | "missing non-odr-use marking for unevaluated decl ref")(static_cast <bool> ((!E || isa<FunctionParmPackExpr >(E)) && "missing non-odr-use marking for unevaluated decl ref" ) ? void (0) : __assert_fail ("(!E || isa<FunctionParmPackExpr>(E)) && \"missing non-odr-use marking for unevaluated decl ref\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18693, __extension__ __PRETTY_FUNCTION__)); | ||||||||
18694 | break; | ||||||||
18695 | |||||||||
18696 | case OdrUseContext::FormallyOdrUsed: | ||||||||
18697 | // FIXME: Ignoring formal odr-uses results in incorrect lambda capture | ||||||||
18698 | // behavior. | ||||||||
18699 | break; | ||||||||
18700 | |||||||||
18701 | case OdrUseContext::Used: | ||||||||
18702 | // If we might later find that this expression isn't actually an odr-use, | ||||||||
18703 | // delay the marking. | ||||||||
18704 | if (E && Var->isUsableInConstantExpressions(SemaRef.Context)) | ||||||||
18705 | SemaRef.MaybeODRUseExprs.insert(E); | ||||||||
18706 | else | ||||||||
18707 | MarkVarDeclODRUsed(Var, Loc, SemaRef); | ||||||||
18708 | break; | ||||||||
18709 | |||||||||
18710 | case OdrUseContext::Dependent: | ||||||||
18711 | // If this is a dependent context, we don't need to mark variables as | ||||||||
18712 | // odr-used, but we may still need to track them for lambda capture. | ||||||||
18713 | // FIXME: Do we also need to do this inside dependent typeid expressions | ||||||||
18714 | // (which are modeled as unevaluated at this point)? | ||||||||
18715 | const bool RefersToEnclosingScope = | ||||||||
18716 | (SemaRef.CurContext != Var->getDeclContext() && | ||||||||
18717 | Var->getDeclContext()->isFunctionOrMethod() && Var->hasLocalStorage()); | ||||||||
18718 | if (RefersToEnclosingScope) { | ||||||||
18719 | LambdaScopeInfo *const LSI = | ||||||||
18720 | SemaRef.getCurLambda(/*IgnoreNonLambdaCapturingScope=*/true); | ||||||||
18721 | if (LSI && (!LSI->CallOperator || | ||||||||
18722 | !LSI->CallOperator->Encloses(Var->getDeclContext()))) { | ||||||||
18723 | // If a variable could potentially be odr-used, defer marking it so | ||||||||
18724 | // until we finish analyzing the full expression for any | ||||||||
18725 | // lvalue-to-rvalue | ||||||||
18726 | // or discarded value conversions that would obviate odr-use. | ||||||||
18727 | // Add it to the list of potential captures that will be analyzed | ||||||||
18728 | // later (ActOnFinishFullExpr) for eventual capture and odr-use marking | ||||||||
18729 | // unless the variable is a reference that was initialized by a constant | ||||||||
18730 | // expression (this will never need to be captured or odr-used). | ||||||||
18731 | // | ||||||||
18732 | // FIXME: We can simplify this a lot after implementing P0588R1. | ||||||||
18733 | assert(E && "Capture variable should be used in an expression.")(static_cast <bool> (E && "Capture variable should be used in an expression." ) ? void (0) : __assert_fail ("E && \"Capture variable should be used in an expression.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 18733, __extension__ __PRETTY_FUNCTION__)); | ||||||||
18734 | if (!Var->getType()->isReferenceType() || | ||||||||
18735 | !Var->isUsableInConstantExpressions(SemaRef.Context)) | ||||||||
18736 | LSI->addPotentialCapture(E->IgnoreParens()); | ||||||||
18737 | } | ||||||||
18738 | } | ||||||||
18739 | break; | ||||||||
18740 | } | ||||||||
18741 | } | ||||||||
18742 | |||||||||
18743 | /// Mark a variable referenced, and check whether it is odr-used | ||||||||
18744 | /// (C++ [basic.def.odr]p2, C99 6.9p3). Note that this should not be | ||||||||
18745 | /// used directly for normal expressions referring to VarDecl. | ||||||||
18746 | void Sema::MarkVariableReferenced(SourceLocation Loc, VarDecl *Var) { | ||||||||
18747 | DoMarkVarDeclReferenced(*this, Loc, Var, nullptr, RefsMinusAssignments); | ||||||||
18748 | } | ||||||||
18749 | |||||||||
18750 | static void | ||||||||
18751 | MarkExprReferenced(Sema &SemaRef, SourceLocation Loc, Decl *D, Expr *E, | ||||||||
18752 | bool MightBeOdrUse, | ||||||||
18753 | llvm::DenseMap<const VarDecl *, int> &RefsMinusAssignments) { | ||||||||
18754 | if (SemaRef.isInOpenMPDeclareTargetContext()) | ||||||||
18755 | SemaRef.checkDeclIsAllowedInOpenMPTarget(E, D); | ||||||||
18756 | |||||||||
18757 | if (VarDecl *Var = dyn_cast<VarDecl>(D)) { | ||||||||
18758 | DoMarkVarDeclReferenced(SemaRef, Loc, Var, E, RefsMinusAssignments); | ||||||||
18759 | return; | ||||||||
18760 | } | ||||||||
18761 | |||||||||
18762 | SemaRef.MarkAnyDeclReferenced(Loc, D, MightBeOdrUse); | ||||||||
18763 | |||||||||
18764 | // If this is a call to a method via a cast, also mark the method in the | ||||||||
18765 | // derived class used in case codegen can devirtualize the call. | ||||||||
18766 | const MemberExpr *ME = dyn_cast<MemberExpr>(E); | ||||||||
18767 | if (!ME) | ||||||||
18768 | return; | ||||||||
18769 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ME->getMemberDecl()); | ||||||||
18770 | if (!MD) | ||||||||
18771 | return; | ||||||||
18772 | // Only attempt to devirtualize if this is truly a virtual call. | ||||||||
18773 | bool IsVirtualCall = MD->isVirtual() && | ||||||||
18774 | ME->performsVirtualDispatch(SemaRef.getLangOpts()); | ||||||||
18775 | if (!IsVirtualCall) | ||||||||
18776 | return; | ||||||||
18777 | |||||||||
18778 | // If it's possible to devirtualize the call, mark the called function | ||||||||
18779 | // referenced. | ||||||||
18780 | CXXMethodDecl *DM = MD->getDevirtualizedMethod( | ||||||||
18781 | ME->getBase(), SemaRef.getLangOpts().AppleKext); | ||||||||
18782 | if (DM) | ||||||||
18783 | SemaRef.MarkAnyDeclReferenced(Loc, DM, MightBeOdrUse); | ||||||||
18784 | } | ||||||||
18785 | |||||||||
18786 | /// Perform reference-marking and odr-use handling for a DeclRefExpr. | ||||||||
18787 | /// | ||||||||
18788 | /// Note, this may change the dependence of the DeclRefExpr, and so needs to be | ||||||||
18789 | /// handled with care if the DeclRefExpr is not newly-created. | ||||||||
18790 | void Sema::MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base) { | ||||||||
18791 | // TODO: update this with DR# once a defect report is filed. | ||||||||
18792 | // C++11 defect. The address of a pure member should not be an ODR use, even | ||||||||
18793 | // if it's a qualified reference. | ||||||||
18794 | bool OdrUse = true; | ||||||||
18795 | if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(E->getDecl())) | ||||||||
18796 | if (Method->isVirtual() && | ||||||||
18797 | !Method->getDevirtualizedMethod(Base, getLangOpts().AppleKext)) | ||||||||
18798 | OdrUse = false; | ||||||||
18799 | |||||||||
18800 | if (auto *FD = dyn_cast<FunctionDecl>(E->getDecl())) | ||||||||
18801 | if (!isUnevaluatedContext() && !isConstantEvaluated() && | ||||||||
18802 | FD->isConsteval() && !RebuildingImmediateInvocation) | ||||||||
18803 | ExprEvalContexts.back().ReferenceToConsteval.insert(E); | ||||||||
18804 | MarkExprReferenced(*this, E->getLocation(), E->getDecl(), E, OdrUse, | ||||||||
18805 | RefsMinusAssignments); | ||||||||
18806 | } | ||||||||
18807 | |||||||||
18808 | /// Perform reference-marking and odr-use handling for a MemberExpr. | ||||||||
18809 | void Sema::MarkMemberReferenced(MemberExpr *E) { | ||||||||
18810 | // C++11 [basic.def.odr]p2: | ||||||||
18811 | // A non-overloaded function whose name appears as a potentially-evaluated | ||||||||
18812 | // expression or a member of a set of candidate functions, if selected by | ||||||||
18813 | // overload resolution when referred to from a potentially-evaluated | ||||||||
18814 | // expression, is odr-used, unless it is a pure virtual function and its | ||||||||
18815 | // name is not explicitly qualified. | ||||||||
18816 | bool MightBeOdrUse = true; | ||||||||
18817 | if (E->performsVirtualDispatch(getLangOpts())) { | ||||||||
18818 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(E->getMemberDecl())) | ||||||||
18819 | if (Method->isPure()) | ||||||||
18820 | MightBeOdrUse = false; | ||||||||
18821 | } | ||||||||
18822 | SourceLocation Loc = | ||||||||
18823 | E->getMemberLoc().isValid() ? E->getMemberLoc() : E->getBeginLoc(); | ||||||||
18824 | MarkExprReferenced(*this, Loc, E->getMemberDecl(), E, MightBeOdrUse, | ||||||||
18825 | RefsMinusAssignments); | ||||||||
18826 | } | ||||||||
18827 | |||||||||
18828 | /// Perform reference-marking and odr-use handling for a FunctionParmPackExpr. | ||||||||
18829 | void Sema::MarkFunctionParmPackReferenced(FunctionParmPackExpr *E) { | ||||||||
18830 | for (VarDecl *VD : *E) | ||||||||
18831 | MarkExprReferenced(*this, E->getParameterPackLocation(), VD, E, true, | ||||||||
18832 | RefsMinusAssignments); | ||||||||
18833 | } | ||||||||
18834 | |||||||||
18835 | /// Perform marking for a reference to an arbitrary declaration. It | ||||||||
18836 | /// marks the declaration referenced, and performs odr-use checking for | ||||||||
18837 | /// functions and variables. This method should not be used when building a | ||||||||
18838 | /// normal expression which refers to a variable. | ||||||||
18839 | void Sema::MarkAnyDeclReferenced(SourceLocation Loc, Decl *D, | ||||||||
18840 | bool MightBeOdrUse) { | ||||||||
18841 | if (MightBeOdrUse) { | ||||||||
18842 | if (auto *VD = dyn_cast<VarDecl>(D)) { | ||||||||
18843 | MarkVariableReferenced(Loc, VD); | ||||||||
18844 | return; | ||||||||
18845 | } | ||||||||
18846 | } | ||||||||
18847 | if (auto *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
18848 | MarkFunctionReferenced(Loc, FD, MightBeOdrUse); | ||||||||
18849 | return; | ||||||||
18850 | } | ||||||||
18851 | D->setReferenced(); | ||||||||
18852 | } | ||||||||
18853 | |||||||||
18854 | namespace { | ||||||||
18855 | // Mark all of the declarations used by a type as referenced. | ||||||||
18856 | // FIXME: Not fully implemented yet! We need to have a better understanding | ||||||||
18857 | // of when we're entering a context we should not recurse into. | ||||||||
18858 | // FIXME: This is and EvaluatedExprMarker are more-or-less equivalent to | ||||||||
18859 | // TreeTransforms rebuilding the type in a new context. Rather than | ||||||||
18860 | // duplicating the TreeTransform logic, we should consider reusing it here. | ||||||||
18861 | // Currently that causes problems when rebuilding LambdaExprs. | ||||||||
18862 | class MarkReferencedDecls : public RecursiveASTVisitor<MarkReferencedDecls> { | ||||||||
18863 | Sema &S; | ||||||||
18864 | SourceLocation Loc; | ||||||||
18865 | |||||||||
18866 | public: | ||||||||
18867 | typedef RecursiveASTVisitor<MarkReferencedDecls> Inherited; | ||||||||
18868 | |||||||||
18869 | MarkReferencedDecls(Sema &S, SourceLocation Loc) : S(S), Loc(Loc) { } | ||||||||
18870 | |||||||||
18871 | bool TraverseTemplateArgument(const TemplateArgument &Arg); | ||||||||
18872 | }; | ||||||||
18873 | } | ||||||||
18874 | |||||||||
18875 | bool MarkReferencedDecls::TraverseTemplateArgument( | ||||||||
18876 | const TemplateArgument &Arg) { | ||||||||
18877 | { | ||||||||
18878 | // A non-type template argument is a constant-evaluated context. | ||||||||
18879 | EnterExpressionEvaluationContext Evaluated( | ||||||||
18880 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | ||||||||
18881 | if (Arg.getKind() == TemplateArgument::Declaration) { | ||||||||
18882 | if (Decl *D = Arg.getAsDecl()) | ||||||||
18883 | S.MarkAnyDeclReferenced(Loc, D, true); | ||||||||
18884 | } else if (Arg.getKind() == TemplateArgument::Expression) { | ||||||||
18885 | S.MarkDeclarationsReferencedInExpr(Arg.getAsExpr(), false); | ||||||||
18886 | } | ||||||||
18887 | } | ||||||||
18888 | |||||||||
18889 | return Inherited::TraverseTemplateArgument(Arg); | ||||||||
18890 | } | ||||||||
18891 | |||||||||
18892 | void Sema::MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T) { | ||||||||
18893 | MarkReferencedDecls Marker(*this, Loc); | ||||||||
18894 | Marker.TraverseType(T); | ||||||||
18895 | } | ||||||||
18896 | |||||||||
18897 | namespace { | ||||||||
18898 | /// Helper class that marks all of the declarations referenced by | ||||||||
18899 | /// potentially-evaluated subexpressions as "referenced". | ||||||||
18900 | class EvaluatedExprMarker : public UsedDeclVisitor<EvaluatedExprMarker> { | ||||||||
18901 | public: | ||||||||
18902 | typedef UsedDeclVisitor<EvaluatedExprMarker> Inherited; | ||||||||
18903 | bool SkipLocalVariables; | ||||||||
18904 | |||||||||
18905 | EvaluatedExprMarker(Sema &S, bool SkipLocalVariables) | ||||||||
18906 | : Inherited(S), SkipLocalVariables(SkipLocalVariables) {} | ||||||||
18907 | |||||||||
18908 | void visitUsedDecl(SourceLocation Loc, Decl *D) { | ||||||||
18909 | S.MarkFunctionReferenced(Loc, cast<FunctionDecl>(D)); | ||||||||
18910 | } | ||||||||
18911 | |||||||||
18912 | void VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
18913 | // If we were asked not to visit local variables, don't. | ||||||||
18914 | if (SkipLocalVariables) { | ||||||||
18915 | if (VarDecl *VD = dyn_cast<VarDecl>(E->getDecl())) | ||||||||
18916 | if (VD->hasLocalStorage()) | ||||||||
18917 | return; | ||||||||
18918 | } | ||||||||
18919 | |||||||||
18920 | // FIXME: This can trigger the instantiation of the initializer of a | ||||||||
18921 | // variable, which can cause the expression to become value-dependent | ||||||||
18922 | // or error-dependent. Do we need to propagate the new dependence bits? | ||||||||
18923 | S.MarkDeclRefReferenced(E); | ||||||||
18924 | } | ||||||||
18925 | |||||||||
18926 | void VisitMemberExpr(MemberExpr *E) { | ||||||||
18927 | S.MarkMemberReferenced(E); | ||||||||
18928 | Visit(E->getBase()); | ||||||||
18929 | } | ||||||||
18930 | }; | ||||||||
18931 | } // namespace | ||||||||
18932 | |||||||||
18933 | /// Mark any declarations that appear within this expression or any | ||||||||
18934 | /// potentially-evaluated subexpressions as "referenced". | ||||||||
18935 | /// | ||||||||
18936 | /// \param SkipLocalVariables If true, don't mark local variables as | ||||||||
18937 | /// 'referenced'. | ||||||||
18938 | void Sema::MarkDeclarationsReferencedInExpr(Expr *E, | ||||||||
18939 | bool SkipLocalVariables) { | ||||||||
18940 | EvaluatedExprMarker(*this, SkipLocalVariables).Visit(E); | ||||||||
18941 | } | ||||||||
18942 | |||||||||
18943 | /// Emit a diagnostic that describes an effect on the run-time behavior | ||||||||
18944 | /// of the program being compiled. | ||||||||
18945 | /// | ||||||||
18946 | /// This routine emits the given diagnostic when the code currently being | ||||||||
18947 | /// type-checked is "potentially evaluated", meaning that there is a | ||||||||
18948 | /// possibility that the code will actually be executable. Code in sizeof() | ||||||||
18949 | /// expressions, code used only during overload resolution, etc., are not | ||||||||
18950 | /// potentially evaluated. This routine will suppress such diagnostics or, | ||||||||
18951 | /// in the absolutely nutty case of potentially potentially evaluated | ||||||||
18952 | /// expressions (C++ typeid), queue the diagnostic to potentially emit it | ||||||||
18953 | /// later. | ||||||||
18954 | /// | ||||||||
18955 | /// This routine should be used for all diagnostics that describe the run-time | ||||||||
18956 | /// behavior of a program, such as passing a non-POD value through an ellipsis. | ||||||||
18957 | /// Failure to do so will likely result in spurious diagnostics or failures | ||||||||
18958 | /// during overload resolution or within sizeof/alignof/typeof/typeid. | ||||||||
18959 | bool Sema::DiagRuntimeBehavior(SourceLocation Loc, ArrayRef<const Stmt*> Stmts, | ||||||||
18960 | const PartialDiagnostic &PD) { | ||||||||
18961 | switch (ExprEvalContexts.back().Context) { | ||||||||
18962 | case ExpressionEvaluationContext::Unevaluated: | ||||||||
18963 | case ExpressionEvaluationContext::UnevaluatedList: | ||||||||
18964 | case ExpressionEvaluationContext::UnevaluatedAbstract: | ||||||||
18965 | case ExpressionEvaluationContext::DiscardedStatement: | ||||||||
18966 | // The argument will never be evaluated, so don't complain. | ||||||||
18967 | break; | ||||||||
18968 | |||||||||
18969 | case ExpressionEvaluationContext::ConstantEvaluated: | ||||||||
18970 | // Relevant diagnostics should be produced by constant evaluation. | ||||||||
18971 | break; | ||||||||
18972 | |||||||||
18973 | case ExpressionEvaluationContext::PotentiallyEvaluated: | ||||||||
18974 | case ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||||||
18975 | if (!Stmts.empty() && getCurFunctionOrMethodDecl()) { | ||||||||
18976 | FunctionScopes.back()->PossiblyUnreachableDiags. | ||||||||
18977 | push_back(sema::PossiblyUnreachableDiag(PD, Loc, Stmts)); | ||||||||
18978 | return true; | ||||||||
18979 | } | ||||||||
18980 | |||||||||
18981 | // The initializer of a constexpr variable or of the first declaration of a | ||||||||
18982 | // static data member is not syntactically a constant evaluated constant, | ||||||||
18983 | // but nonetheless is always required to be a constant expression, so we | ||||||||
18984 | // can skip diagnosing. | ||||||||
18985 | // FIXME: Using the mangling context here is a hack. | ||||||||
18986 | if (auto *VD = dyn_cast_or_null<VarDecl>( | ||||||||
18987 | ExprEvalContexts.back().ManglingContextDecl)) { | ||||||||
18988 | if (VD->isConstexpr() || | ||||||||
18989 | (VD->isStaticDataMember() && VD->isFirstDecl() && !VD->isInline())) | ||||||||
18990 | break; | ||||||||
18991 | // FIXME: For any other kind of variable, we should build a CFG for its | ||||||||
18992 | // initializer and check whether the context in question is reachable. | ||||||||
18993 | } | ||||||||
18994 | |||||||||
18995 | Diag(Loc, PD); | ||||||||
18996 | return true; | ||||||||
18997 | } | ||||||||
18998 | |||||||||
18999 | return false; | ||||||||
19000 | } | ||||||||
19001 | |||||||||
19002 | bool Sema::DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, | ||||||||
19003 | const PartialDiagnostic &PD) { | ||||||||
19004 | return DiagRuntimeBehavior( | ||||||||
19005 | Loc, Statement ? llvm::makeArrayRef(Statement) : llvm::None, PD); | ||||||||
19006 | } | ||||||||
19007 | |||||||||
19008 | bool Sema::CheckCallReturnType(QualType ReturnType, SourceLocation Loc, | ||||||||
19009 | CallExpr *CE, FunctionDecl *FD) { | ||||||||
19010 | if (ReturnType->isVoidType() || !ReturnType->isIncompleteType()) | ||||||||
19011 | return false; | ||||||||
19012 | |||||||||
19013 | // If we're inside a decltype's expression, don't check for a valid return | ||||||||
19014 | // type or construct temporaries until we know whether this is the last call. | ||||||||
19015 | if (ExprEvalContexts.back().ExprContext == | ||||||||
19016 | ExpressionEvaluationContextRecord::EK_Decltype) { | ||||||||
19017 | ExprEvalContexts.back().DelayedDecltypeCalls.push_back(CE); | ||||||||
19018 | return false; | ||||||||
19019 | } | ||||||||
19020 | |||||||||
19021 | class CallReturnIncompleteDiagnoser : public TypeDiagnoser { | ||||||||
19022 | FunctionDecl *FD; | ||||||||
19023 | CallExpr *CE; | ||||||||
19024 | |||||||||
19025 | public: | ||||||||
19026 | CallReturnIncompleteDiagnoser(FunctionDecl *FD, CallExpr *CE) | ||||||||
19027 | : FD(FD), CE(CE) { } | ||||||||
19028 | |||||||||
19029 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
19030 | if (!FD) { | ||||||||
19031 | S.Diag(Loc, diag::err_call_incomplete_return) | ||||||||
19032 | << T << CE->getSourceRange(); | ||||||||
19033 | return; | ||||||||
19034 | } | ||||||||
19035 | |||||||||
19036 | S.Diag(Loc, diag::err_call_function_incomplete_return) | ||||||||
19037 | << CE->getSourceRange() << FD << T; | ||||||||
19038 | S.Diag(FD->getLocation(), diag::note_entity_declared_at) | ||||||||
19039 | << FD->getDeclName(); | ||||||||
19040 | } | ||||||||
19041 | } Diagnoser(FD, CE); | ||||||||
19042 | |||||||||
19043 | if (RequireCompleteType(Loc, ReturnType, Diagnoser)) | ||||||||
19044 | return true; | ||||||||
19045 | |||||||||
19046 | return false; | ||||||||
19047 | } | ||||||||
19048 | |||||||||
19049 | // Diagnose the s/=/==/ and s/\|=/!=/ typos. Note that adding parentheses | ||||||||
19050 | // will prevent this condition from triggering, which is what we want. | ||||||||
19051 | void Sema::DiagnoseAssignmentAsCondition(Expr *E) { | ||||||||
19052 | SourceLocation Loc; | ||||||||
19053 | |||||||||
19054 | unsigned diagnostic = diag::warn_condition_is_assignment; | ||||||||
19055 | bool IsOrAssign = false; | ||||||||
19056 | |||||||||
19057 | if (BinaryOperator *Op = dyn_cast<BinaryOperator>(E)) { | ||||||||
19058 | if (Op->getOpcode() != BO_Assign && Op->getOpcode() != BO_OrAssign) | ||||||||
19059 | return; | ||||||||
19060 | |||||||||
19061 | IsOrAssign = Op->getOpcode() == BO_OrAssign; | ||||||||
19062 | |||||||||
19063 | // Greylist some idioms by putting them into a warning subcategory. | ||||||||
19064 | if (ObjCMessageExpr *ME | ||||||||
19065 | = dyn_cast<ObjCMessageExpr>(Op->getRHS()->IgnoreParenCasts())) { | ||||||||
19066 | Selector Sel = ME->getSelector(); | ||||||||
19067 | |||||||||
19068 | // self = [<foo> init...] | ||||||||
19069 | if (isSelfExpr(Op->getLHS()) && ME->getMethodFamily() == OMF_init) | ||||||||
19070 | diagnostic = diag::warn_condition_is_idiomatic_assignment; | ||||||||
19071 | |||||||||
19072 | // <foo> = [<bar> nextObject] | ||||||||
19073 | else if (Sel.isUnarySelector() && Sel.getNameForSlot(0) == "nextObject") | ||||||||
19074 | diagnostic = diag::warn_condition_is_idiomatic_assignment; | ||||||||
19075 | } | ||||||||
19076 | |||||||||
19077 | Loc = Op->getOperatorLoc(); | ||||||||
19078 | } else if (CXXOperatorCallExpr *Op = dyn_cast<CXXOperatorCallExpr>(E)) { | ||||||||
19079 | if (Op->getOperator() != OO_Equal && Op->getOperator() != OO_PipeEqual) | ||||||||
19080 | return; | ||||||||
19081 | |||||||||
19082 | IsOrAssign = Op->getOperator() == OO_PipeEqual; | ||||||||
19083 | Loc = Op->getOperatorLoc(); | ||||||||
19084 | } else if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(E)) | ||||||||
19085 | return DiagnoseAssignmentAsCondition(POE->getSyntacticForm()); | ||||||||
19086 | else { | ||||||||
19087 | // Not an assignment. | ||||||||
19088 | return; | ||||||||
19089 | } | ||||||||
19090 | |||||||||
19091 | Diag(Loc, diagnostic) << E->getSourceRange(); | ||||||||
19092 | |||||||||
19093 | SourceLocation Open = E->getBeginLoc(); | ||||||||
19094 | SourceLocation Close = getLocForEndOfToken(E->getSourceRange().getEnd()); | ||||||||
19095 | Diag(Loc, diag::note_condition_assign_silence) | ||||||||
19096 | << FixItHint::CreateInsertion(Open, "(") | ||||||||
19097 | << FixItHint::CreateInsertion(Close, ")"); | ||||||||
19098 | |||||||||
19099 | if (IsOrAssign) | ||||||||
19100 | Diag(Loc, diag::note_condition_or_assign_to_comparison) | ||||||||
19101 | << FixItHint::CreateReplacement(Loc, "!="); | ||||||||
19102 | else | ||||||||
19103 | Diag(Loc, diag::note_condition_assign_to_comparison) | ||||||||
19104 | << FixItHint::CreateReplacement(Loc, "=="); | ||||||||
19105 | } | ||||||||
19106 | |||||||||
19107 | /// Redundant parentheses over an equality comparison can indicate | ||||||||
19108 | /// that the user intended an assignment used as condition. | ||||||||
19109 | void Sema::DiagnoseEqualityWithExtraParens(ParenExpr *ParenE) { | ||||||||
19110 | // Don't warn if the parens came from a macro. | ||||||||
19111 | SourceLocation parenLoc = ParenE->getBeginLoc(); | ||||||||
19112 | if (parenLoc.isInvalid() || parenLoc.isMacroID()) | ||||||||
19113 | return; | ||||||||
19114 | // Don't warn for dependent expressions. | ||||||||
19115 | if (ParenE->isTypeDependent()) | ||||||||
19116 | return; | ||||||||
19117 | |||||||||
19118 | Expr *E = ParenE->IgnoreParens(); | ||||||||
19119 | |||||||||
19120 | if (BinaryOperator *opE = dyn_cast<BinaryOperator>(E)) | ||||||||
19121 | if (opE->getOpcode() == BO_EQ && | ||||||||
19122 | opE->getLHS()->IgnoreParenImpCasts()->isModifiableLvalue(Context) | ||||||||
19123 | == Expr::MLV_Valid) { | ||||||||
19124 | SourceLocation Loc = opE->getOperatorLoc(); | ||||||||
19125 | |||||||||
19126 | Diag(Loc, diag::warn_equality_with_extra_parens) << E->getSourceRange(); | ||||||||
19127 | SourceRange ParenERange = ParenE->getSourceRange(); | ||||||||
19128 | Diag(Loc, diag::note_equality_comparison_silence) | ||||||||
19129 | << FixItHint::CreateRemoval(ParenERange.getBegin()) | ||||||||
19130 | << FixItHint::CreateRemoval(ParenERange.getEnd()); | ||||||||
19131 | Diag(Loc, diag::note_equality_comparison_to_assign) | ||||||||
19132 | << FixItHint::CreateReplacement(Loc, "="); | ||||||||
19133 | } | ||||||||
19134 | } | ||||||||
19135 | |||||||||
19136 | ExprResult Sema::CheckBooleanCondition(SourceLocation Loc, Expr *E, | ||||||||
19137 | bool IsConstexpr) { | ||||||||
19138 | DiagnoseAssignmentAsCondition(E); | ||||||||
19139 | if (ParenExpr *parenE = dyn_cast<ParenExpr>(E)) | ||||||||
19140 | DiagnoseEqualityWithExtraParens(parenE); | ||||||||
19141 | |||||||||
19142 | ExprResult result = CheckPlaceholderExpr(E); | ||||||||
19143 | if (result.isInvalid()) return ExprError(); | ||||||||
19144 | E = result.get(); | ||||||||
19145 | |||||||||
19146 | if (!E->isTypeDependent()) { | ||||||||
19147 | if (getLangOpts().CPlusPlus) | ||||||||
19148 | return CheckCXXBooleanCondition(E, IsConstexpr); // C++ 6.4p4 | ||||||||
19149 | |||||||||
19150 | ExprResult ERes = DefaultFunctionArrayLvalueConversion(E); | ||||||||
19151 | if (ERes.isInvalid()) | ||||||||
19152 | return ExprError(); | ||||||||
19153 | E = ERes.get(); | ||||||||
19154 | |||||||||
19155 | QualType T = E->getType(); | ||||||||
19156 | if (!T->isScalarType()) { // C99 6.8.4.1p1 | ||||||||
19157 | Diag(Loc, diag::err_typecheck_statement_requires_scalar) | ||||||||
19158 | << T << E->getSourceRange(); | ||||||||
19159 | return ExprError(); | ||||||||
19160 | } | ||||||||
19161 | CheckBoolLikeConversion(E, Loc); | ||||||||
19162 | } | ||||||||
19163 | |||||||||
19164 | return E; | ||||||||
19165 | } | ||||||||
19166 | |||||||||
19167 | Sema::ConditionResult Sema::ActOnCondition(Scope *S, SourceLocation Loc, | ||||||||
19168 | Expr *SubExpr, ConditionKind CK) { | ||||||||
19169 | // Empty conditions are valid in for-statements. | ||||||||
19170 | if (!SubExpr) | ||||||||
19171 | return ConditionResult(); | ||||||||
19172 | |||||||||
19173 | ExprResult Cond; | ||||||||
19174 | switch (CK) { | ||||||||
19175 | case ConditionKind::Boolean: | ||||||||
19176 | Cond = CheckBooleanCondition(Loc, SubExpr); | ||||||||
19177 | break; | ||||||||
19178 | |||||||||
19179 | case ConditionKind::ConstexprIf: | ||||||||
19180 | Cond = CheckBooleanCondition(Loc, SubExpr, true); | ||||||||
19181 | break; | ||||||||
19182 | |||||||||
19183 | case ConditionKind::Switch: | ||||||||
19184 | Cond = CheckSwitchCondition(Loc, SubExpr); | ||||||||
19185 | break; | ||||||||
19186 | } | ||||||||
19187 | if (Cond.isInvalid()) { | ||||||||
19188 | Cond = CreateRecoveryExpr(SubExpr->getBeginLoc(), SubExpr->getEndLoc(), | ||||||||
19189 | {SubExpr}); | ||||||||
19190 | if (!Cond.get()) | ||||||||
19191 | return ConditionError(); | ||||||||
19192 | } | ||||||||
19193 | // FIXME: FullExprArg doesn't have an invalid bit, so check nullness instead. | ||||||||
19194 | FullExprArg FullExpr = MakeFullExpr(Cond.get(), Loc); | ||||||||
19195 | if (!FullExpr.get()) | ||||||||
19196 | return ConditionError(); | ||||||||
19197 | |||||||||
19198 | return ConditionResult(*this, nullptr, FullExpr, | ||||||||
19199 | CK == ConditionKind::ConstexprIf); | ||||||||
19200 | } | ||||||||
19201 | |||||||||
19202 | namespace { | ||||||||
19203 | /// A visitor for rebuilding a call to an __unknown_any expression | ||||||||
19204 | /// to have an appropriate type. | ||||||||
19205 | struct RebuildUnknownAnyFunction | ||||||||
19206 | : StmtVisitor<RebuildUnknownAnyFunction, ExprResult> { | ||||||||
19207 | |||||||||
19208 | Sema &S; | ||||||||
19209 | |||||||||
19210 | RebuildUnknownAnyFunction(Sema &S) : S(S) {} | ||||||||
19211 | |||||||||
19212 | ExprResult VisitStmt(Stmt *S) { | ||||||||
19213 | llvm_unreachable("unexpected statement!")::llvm::llvm_unreachable_internal("unexpected statement!", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19213); | ||||||||
19214 | } | ||||||||
19215 | |||||||||
19216 | ExprResult VisitExpr(Expr *E) { | ||||||||
19217 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_call) | ||||||||
19218 | << E->getSourceRange(); | ||||||||
19219 | return ExprError(); | ||||||||
19220 | } | ||||||||
19221 | |||||||||
19222 | /// Rebuild an expression which simply semantically wraps another | ||||||||
19223 | /// expression which it shares the type and value kind of. | ||||||||
19224 | template <class T> ExprResult rebuildSugarExpr(T *E) { | ||||||||
19225 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
19226 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
19227 | |||||||||
19228 | Expr *SubExpr = SubResult.get(); | ||||||||
19229 | E->setSubExpr(SubExpr); | ||||||||
19230 | E->setType(SubExpr->getType()); | ||||||||
19231 | E->setValueKind(SubExpr->getValueKind()); | ||||||||
19232 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19232, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19233 | return E; | ||||||||
19234 | } | ||||||||
19235 | |||||||||
19236 | ExprResult VisitParenExpr(ParenExpr *E) { | ||||||||
19237 | return rebuildSugarExpr(E); | ||||||||
19238 | } | ||||||||
19239 | |||||||||
19240 | ExprResult VisitUnaryExtension(UnaryOperator *E) { | ||||||||
19241 | return rebuildSugarExpr(E); | ||||||||
19242 | } | ||||||||
19243 | |||||||||
19244 | ExprResult VisitUnaryAddrOf(UnaryOperator *E) { | ||||||||
19245 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
19246 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
19247 | |||||||||
19248 | Expr *SubExpr = SubResult.get(); | ||||||||
19249 | E->setSubExpr(SubExpr); | ||||||||
19250 | E->setType(S.Context.getPointerType(SubExpr->getType())); | ||||||||
19251 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19251, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19252 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19252, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19253 | return E; | ||||||||
19254 | } | ||||||||
19255 | |||||||||
19256 | ExprResult resolveDecl(Expr *E, ValueDecl *VD) { | ||||||||
19257 | if (!isa<FunctionDecl>(VD)) return VisitExpr(E); | ||||||||
19258 | |||||||||
19259 | E->setType(VD->getType()); | ||||||||
19260 | |||||||||
19261 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19261, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19262 | if (S.getLangOpts().CPlusPlus && | ||||||||
19263 | !(isa<CXXMethodDecl>(VD) && | ||||||||
19264 | cast<CXXMethodDecl>(VD)->isInstance())) | ||||||||
19265 | E->setValueKind(VK_LValue); | ||||||||
19266 | |||||||||
19267 | return E; | ||||||||
19268 | } | ||||||||
19269 | |||||||||
19270 | ExprResult VisitMemberExpr(MemberExpr *E) { | ||||||||
19271 | return resolveDecl(E, E->getMemberDecl()); | ||||||||
19272 | } | ||||||||
19273 | |||||||||
19274 | ExprResult VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
19275 | return resolveDecl(E, E->getDecl()); | ||||||||
19276 | } | ||||||||
19277 | }; | ||||||||
19278 | } | ||||||||
19279 | |||||||||
19280 | /// Given a function expression of unknown-any type, try to rebuild it | ||||||||
19281 | /// to have a function type. | ||||||||
19282 | static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *FunctionExpr) { | ||||||||
19283 | ExprResult Result = RebuildUnknownAnyFunction(S).Visit(FunctionExpr); | ||||||||
19284 | if (Result.isInvalid()) return ExprError(); | ||||||||
19285 | return S.DefaultFunctionArrayConversion(Result.get()); | ||||||||
19286 | } | ||||||||
19287 | |||||||||
19288 | namespace { | ||||||||
19289 | /// A visitor for rebuilding an expression of type __unknown_anytype | ||||||||
19290 | /// into one which resolves the type directly on the referring | ||||||||
19291 | /// expression. Strict preservation of the original source | ||||||||
19292 | /// structure is not a goal. | ||||||||
19293 | struct RebuildUnknownAnyExpr | ||||||||
19294 | : StmtVisitor<RebuildUnknownAnyExpr, ExprResult> { | ||||||||
19295 | |||||||||
19296 | Sema &S; | ||||||||
19297 | |||||||||
19298 | /// The current destination type. | ||||||||
19299 | QualType DestType; | ||||||||
19300 | |||||||||
19301 | RebuildUnknownAnyExpr(Sema &S, QualType CastType) | ||||||||
19302 | : S(S), DestType(CastType) {} | ||||||||
19303 | |||||||||
19304 | ExprResult VisitStmt(Stmt *S) { | ||||||||
19305 | llvm_unreachable("unexpected statement!")::llvm::llvm_unreachable_internal("unexpected statement!", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19305); | ||||||||
19306 | } | ||||||||
19307 | |||||||||
19308 | ExprResult VisitExpr(Expr *E) { | ||||||||
19309 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_expr) | ||||||||
19310 | << E->getSourceRange(); | ||||||||
19311 | return ExprError(); | ||||||||
19312 | } | ||||||||
19313 | |||||||||
19314 | ExprResult VisitCallExpr(CallExpr *E); | ||||||||
19315 | ExprResult VisitObjCMessageExpr(ObjCMessageExpr *E); | ||||||||
19316 | |||||||||
19317 | /// Rebuild an expression which simply semantically wraps another | ||||||||
19318 | /// expression which it shares the type and value kind of. | ||||||||
19319 | template <class T> ExprResult rebuildSugarExpr(T *E) { | ||||||||
19320 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
19321 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
19322 | Expr *SubExpr = SubResult.get(); | ||||||||
19323 | E->setSubExpr(SubExpr); | ||||||||
19324 | E->setType(SubExpr->getType()); | ||||||||
19325 | E->setValueKind(SubExpr->getValueKind()); | ||||||||
19326 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19326, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19327 | return E; | ||||||||
19328 | } | ||||||||
19329 | |||||||||
19330 | ExprResult VisitParenExpr(ParenExpr *E) { | ||||||||
19331 | return rebuildSugarExpr(E); | ||||||||
19332 | } | ||||||||
19333 | |||||||||
19334 | ExprResult VisitUnaryExtension(UnaryOperator *E) { | ||||||||
19335 | return rebuildSugarExpr(E); | ||||||||
19336 | } | ||||||||
19337 | |||||||||
19338 | ExprResult VisitUnaryAddrOf(UnaryOperator *E) { | ||||||||
19339 | const PointerType *Ptr = DestType->getAs<PointerType>(); | ||||||||
19340 | if (!Ptr) { | ||||||||
19341 | S.Diag(E->getOperatorLoc(), diag::err_unknown_any_addrof) | ||||||||
19342 | << E->getSourceRange(); | ||||||||
19343 | return ExprError(); | ||||||||
19344 | } | ||||||||
19345 | |||||||||
19346 | if (isa<CallExpr>(E->getSubExpr())) { | ||||||||
19347 | S.Diag(E->getOperatorLoc(), diag::err_unknown_any_addrof_call) | ||||||||
19348 | << E->getSourceRange(); | ||||||||
19349 | return ExprError(); | ||||||||
19350 | } | ||||||||
19351 | |||||||||
19352 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19352, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19353 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19353, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19354 | E->setType(DestType); | ||||||||
19355 | |||||||||
19356 | // Build the sub-expression as if it were an object of the pointee type. | ||||||||
19357 | DestType = Ptr->getPointeeType(); | ||||||||
19358 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
19359 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
19360 | E->setSubExpr(SubResult.get()); | ||||||||
19361 | return E; | ||||||||
19362 | } | ||||||||
19363 | |||||||||
19364 | ExprResult VisitImplicitCastExpr(ImplicitCastExpr *E); | ||||||||
19365 | |||||||||
19366 | ExprResult resolveDecl(Expr *E, ValueDecl *VD); | ||||||||
19367 | |||||||||
19368 | ExprResult VisitMemberExpr(MemberExpr *E) { | ||||||||
19369 | return resolveDecl(E, E->getMemberDecl()); | ||||||||
19370 | } | ||||||||
19371 | |||||||||
19372 | ExprResult VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
19373 | return resolveDecl(E, E->getDecl()); | ||||||||
19374 | } | ||||||||
19375 | }; | ||||||||
19376 | } | ||||||||
19377 | |||||||||
19378 | /// Rebuilds a call expression which yielded __unknown_anytype. | ||||||||
19379 | ExprResult RebuildUnknownAnyExpr::VisitCallExpr(CallExpr *E) { | ||||||||
19380 | Expr *CalleeExpr = E->getCallee(); | ||||||||
19381 | |||||||||
19382 | enum FnKind { | ||||||||
19383 | FK_MemberFunction, | ||||||||
19384 | FK_FunctionPointer, | ||||||||
19385 | FK_BlockPointer | ||||||||
19386 | }; | ||||||||
19387 | |||||||||
19388 | FnKind Kind; | ||||||||
19389 | QualType CalleeType = CalleeExpr->getType(); | ||||||||
19390 | if (CalleeType == S.Context.BoundMemberTy) { | ||||||||
19391 | assert(isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E))(static_cast <bool> (isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E)) ? void (0) : __assert_fail ("isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19391, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19392 | Kind = FK_MemberFunction; | ||||||||
19393 | CalleeType = Expr::findBoundMemberType(CalleeExpr); | ||||||||
19394 | } else if (const PointerType *Ptr = CalleeType->getAs<PointerType>()) { | ||||||||
19395 | CalleeType = Ptr->getPointeeType(); | ||||||||
19396 | Kind = FK_FunctionPointer; | ||||||||
19397 | } else { | ||||||||
19398 | CalleeType = CalleeType->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
19399 | Kind = FK_BlockPointer; | ||||||||
19400 | } | ||||||||
19401 | const FunctionType *FnType = CalleeType->castAs<FunctionType>(); | ||||||||
19402 | |||||||||
19403 | // Verify that this is a legal result type of a function. | ||||||||
19404 | if (DestType->isArrayType() || DestType->isFunctionType()) { | ||||||||
19405 | unsigned diagID = diag::err_func_returning_array_function; | ||||||||
19406 | if (Kind == FK_BlockPointer) | ||||||||
19407 | diagID = diag::err_block_returning_array_function; | ||||||||
19408 | |||||||||
19409 | S.Diag(E->getExprLoc(), diagID) | ||||||||
19410 | << DestType->isFunctionType() << DestType; | ||||||||
19411 | return ExprError(); | ||||||||
19412 | } | ||||||||
19413 | |||||||||
19414 | // Otherwise, go ahead and set DestType as the call's result. | ||||||||
19415 | E->setType(DestType.getNonLValueExprType(S.Context)); | ||||||||
19416 | E->setValueKind(Expr::getValueKindForType(DestType)); | ||||||||
19417 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19417, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19418 | |||||||||
19419 | // Rebuild the function type, replacing the result type with DestType. | ||||||||
19420 | const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FnType); | ||||||||
19421 | if (Proto) { | ||||||||
19422 | // __unknown_anytype(...) is a special case used by the debugger when | ||||||||
19423 | // it has no idea what a function's signature is. | ||||||||
19424 | // | ||||||||
19425 | // We want to build this call essentially under the K&R | ||||||||
19426 | // unprototyped rules, but making a FunctionNoProtoType in C++ | ||||||||
19427 | // would foul up all sorts of assumptions. However, we cannot | ||||||||
19428 | // simply pass all arguments as variadic arguments, nor can we | ||||||||
19429 | // portably just call the function under a non-variadic type; see | ||||||||
19430 | // the comment on IR-gen's TargetInfo::isNoProtoCallVariadic. | ||||||||
19431 | // However, it turns out that in practice it is generally safe to | ||||||||
19432 | // call a function declared as "A foo(B,C,D);" under the prototype | ||||||||
19433 | // "A foo(B,C,D,...);". The only known exception is with the | ||||||||
19434 | // Windows ABI, where any variadic function is implicitly cdecl | ||||||||
19435 | // regardless of its normal CC. Therefore we change the parameter | ||||||||
19436 | // types to match the types of the arguments. | ||||||||
19437 | // | ||||||||
19438 | // This is a hack, but it is far superior to moving the | ||||||||
19439 | // corresponding target-specific code from IR-gen to Sema/AST. | ||||||||
19440 | |||||||||
19441 | ArrayRef<QualType> ParamTypes = Proto->getParamTypes(); | ||||||||
19442 | SmallVector<QualType, 8> ArgTypes; | ||||||||
19443 | if (ParamTypes.empty() && Proto->isVariadic()) { // the special case | ||||||||
19444 | ArgTypes.reserve(E->getNumArgs()); | ||||||||
19445 | for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) { | ||||||||
19446 | ArgTypes.push_back(S.Context.getReferenceQualifiedType(E->getArg(i))); | ||||||||
19447 | } | ||||||||
19448 | ParamTypes = ArgTypes; | ||||||||
19449 | } | ||||||||
19450 | DestType = S.Context.getFunctionType(DestType, ParamTypes, | ||||||||
19451 | Proto->getExtProtoInfo()); | ||||||||
19452 | } else { | ||||||||
19453 | DestType = S.Context.getFunctionNoProtoType(DestType, | ||||||||
19454 | FnType->getExtInfo()); | ||||||||
19455 | } | ||||||||
19456 | |||||||||
19457 | // Rebuild the appropriate pointer-to-function type. | ||||||||
19458 | switch (Kind) { | ||||||||
19459 | case FK_MemberFunction: | ||||||||
19460 | // Nothing to do. | ||||||||
19461 | break; | ||||||||
19462 | |||||||||
19463 | case FK_FunctionPointer: | ||||||||
19464 | DestType = S.Context.getPointerType(DestType); | ||||||||
19465 | break; | ||||||||
19466 | |||||||||
19467 | case FK_BlockPointer: | ||||||||
19468 | DestType = S.Context.getBlockPointerType(DestType); | ||||||||
19469 | break; | ||||||||
19470 | } | ||||||||
19471 | |||||||||
19472 | // Finally, we can recurse. | ||||||||
19473 | ExprResult CalleeResult = Visit(CalleeExpr); | ||||||||
19474 | if (!CalleeResult.isUsable()) return ExprError(); | ||||||||
19475 | E->setCallee(CalleeResult.get()); | ||||||||
19476 | |||||||||
19477 | // Bind a temporary if necessary. | ||||||||
19478 | return S.MaybeBindToTemporary(E); | ||||||||
19479 | } | ||||||||
19480 | |||||||||
19481 | ExprResult RebuildUnknownAnyExpr::VisitObjCMessageExpr(ObjCMessageExpr *E) { | ||||||||
19482 | // Verify that this is a legal result type of a call. | ||||||||
19483 | if (DestType->isArrayType() || DestType->isFunctionType()) { | ||||||||
19484 | S.Diag(E->getExprLoc(), diag::err_func_returning_array_function) | ||||||||
19485 | << DestType->isFunctionType() << DestType; | ||||||||
19486 | return ExprError(); | ||||||||
19487 | } | ||||||||
19488 | |||||||||
19489 | // Rewrite the method result type if available. | ||||||||
19490 | if (ObjCMethodDecl *Method = E->getMethodDecl()) { | ||||||||
19491 | assert(Method->getReturnType() == S.Context.UnknownAnyTy)(static_cast <bool> (Method->getReturnType() == S.Context .UnknownAnyTy) ? void (0) : __assert_fail ("Method->getReturnType() == S.Context.UnknownAnyTy" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19491, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19492 | Method->setReturnType(DestType); | ||||||||
19493 | } | ||||||||
19494 | |||||||||
19495 | // Change the type of the message. | ||||||||
19496 | E->setType(DestType.getNonReferenceType()); | ||||||||
19497 | E->setValueKind(Expr::getValueKindForType(DestType)); | ||||||||
19498 | |||||||||
19499 | return S.MaybeBindToTemporary(E); | ||||||||
19500 | } | ||||||||
19501 | |||||||||
19502 | ExprResult RebuildUnknownAnyExpr::VisitImplicitCastExpr(ImplicitCastExpr *E) { | ||||||||
19503 | // The only case we should ever see here is a function-to-pointer decay. | ||||||||
19504 | if (E->getCastKind() == CK_FunctionToPointerDecay) { | ||||||||
19505 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19505, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19506 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19506, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19507 | |||||||||
19508 | E->setType(DestType); | ||||||||
19509 | |||||||||
19510 | // Rebuild the sub-expression as the pointee (function) type. | ||||||||
19511 | DestType = DestType->castAs<PointerType>()->getPointeeType(); | ||||||||
19512 | |||||||||
19513 | ExprResult Result = Visit(E->getSubExpr()); | ||||||||
19514 | if (!Result.isUsable()) return ExprError(); | ||||||||
19515 | |||||||||
19516 | E->setSubExpr(Result.get()); | ||||||||
19517 | return E; | ||||||||
19518 | } else if (E->getCastKind() == CK_LValueToRValue) { | ||||||||
19519 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19519, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19520 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19520, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19521 | |||||||||
19522 | assert(isa<BlockPointerType>(E->getType()))(static_cast <bool> (isa<BlockPointerType>(E-> getType())) ? void (0) : __assert_fail ("isa<BlockPointerType>(E->getType())" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19522, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19523 | |||||||||
19524 | E->setType(DestType); | ||||||||
19525 | |||||||||
19526 | // The sub-expression has to be a lvalue reference, so rebuild it as such. | ||||||||
19527 | DestType = S.Context.getLValueReferenceType(DestType); | ||||||||
19528 | |||||||||
19529 | ExprResult Result = Visit(E->getSubExpr()); | ||||||||
19530 | if (!Result.isUsable()) return ExprError(); | ||||||||
19531 | |||||||||
19532 | E->setSubExpr(Result.get()); | ||||||||
19533 | return E; | ||||||||
19534 | } else { | ||||||||
19535 | llvm_unreachable("Unhandled cast type!")::llvm::llvm_unreachable_internal("Unhandled cast type!", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19535); | ||||||||
19536 | } | ||||||||
19537 | } | ||||||||
19538 | |||||||||
19539 | ExprResult RebuildUnknownAnyExpr::resolveDecl(Expr *E, ValueDecl *VD) { | ||||||||
19540 | ExprValueKind ValueKind = VK_LValue; | ||||||||
19541 | QualType Type = DestType; | ||||||||
19542 | |||||||||
19543 | // We know how to make this work for certain kinds of decls: | ||||||||
19544 | |||||||||
19545 | // - functions | ||||||||
19546 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(VD)) { | ||||||||
19547 | if (const PointerType *Ptr = Type->getAs<PointerType>()) { | ||||||||
19548 | DestType = Ptr->getPointeeType(); | ||||||||
19549 | ExprResult Result = resolveDecl(E, VD); | ||||||||
19550 | if (Result.isInvalid()) return ExprError(); | ||||||||
19551 | return S.ImpCastExprToType(Result.get(), Type, CK_FunctionToPointerDecay, | ||||||||
19552 | VK_PRValue); | ||||||||
19553 | } | ||||||||
19554 | |||||||||
19555 | if (!Type->isFunctionType()) { | ||||||||
19556 | S.Diag(E->getExprLoc(), diag::err_unknown_any_function) | ||||||||
19557 | << VD << E->getSourceRange(); | ||||||||
19558 | return ExprError(); | ||||||||
19559 | } | ||||||||
19560 | if (const FunctionProtoType *FT = Type->getAs<FunctionProtoType>()) { | ||||||||
19561 | // We must match the FunctionDecl's type to the hack introduced in | ||||||||
19562 | // RebuildUnknownAnyExpr::VisitCallExpr to vararg functions of unknown | ||||||||
19563 | // type. See the lengthy commentary in that routine. | ||||||||
19564 | QualType FDT = FD->getType(); | ||||||||
19565 | const FunctionType *FnType = FDT->castAs<FunctionType>(); | ||||||||
19566 | const FunctionProtoType *Proto = dyn_cast_or_null<FunctionProtoType>(FnType); | ||||||||
19567 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||||||
19568 | if (DRE && Proto && Proto->getParamTypes().empty() && Proto->isVariadic()) { | ||||||||
19569 | SourceLocation Loc = FD->getLocation(); | ||||||||
19570 | FunctionDecl *NewFD = FunctionDecl::Create( | ||||||||
19571 | S.Context, FD->getDeclContext(), Loc, Loc, | ||||||||
19572 | FD->getNameInfo().getName(), DestType, FD->getTypeSourceInfo(), | ||||||||
19573 | SC_None, S.getCurFPFeatures().isFPConstrained(), | ||||||||
19574 | false /*isInlineSpecified*/, FD->hasPrototype(), | ||||||||
19575 | /*ConstexprKind*/ ConstexprSpecKind::Unspecified); | ||||||||
19576 | |||||||||
19577 | if (FD->getQualifier()) | ||||||||
19578 | NewFD->setQualifierInfo(FD->getQualifierLoc()); | ||||||||
19579 | |||||||||
19580 | SmallVector<ParmVarDecl*, 16> Params; | ||||||||
19581 | for (const auto &AI : FT->param_types()) { | ||||||||
19582 | ParmVarDecl *Param = | ||||||||
19583 | S.BuildParmVarDeclForTypedef(FD, Loc, AI); | ||||||||
19584 | Param->setScopeInfo(0, Params.size()); | ||||||||
19585 | Params.push_back(Param); | ||||||||
19586 | } | ||||||||
19587 | NewFD->setParams(Params); | ||||||||
19588 | DRE->setDecl(NewFD); | ||||||||
19589 | VD = DRE->getDecl(); | ||||||||
19590 | } | ||||||||
19591 | } | ||||||||
19592 | |||||||||
19593 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) | ||||||||
19594 | if (MD->isInstance()) { | ||||||||
19595 | ValueKind = VK_PRValue; | ||||||||
19596 | Type = S.Context.BoundMemberTy; | ||||||||
19597 | } | ||||||||
19598 | |||||||||
19599 | // Function references aren't l-values in C. | ||||||||
19600 | if (!S.getLangOpts().CPlusPlus) | ||||||||
19601 | ValueKind = VK_PRValue; | ||||||||
19602 | |||||||||
19603 | // - variables | ||||||||
19604 | } else if (isa<VarDecl>(VD)) { | ||||||||
19605 | if (const ReferenceType *RefTy = Type->getAs<ReferenceType>()) { | ||||||||
19606 | Type = RefTy->getPointeeType(); | ||||||||
19607 | } else if (Type->isFunctionType()) { | ||||||||
19608 | S.Diag(E->getExprLoc(), diag::err_unknown_any_var_function_type) | ||||||||
19609 | << VD << E->getSourceRange(); | ||||||||
19610 | return ExprError(); | ||||||||
19611 | } | ||||||||
19612 | |||||||||
19613 | // - nothing else | ||||||||
19614 | } else { | ||||||||
19615 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_decl) | ||||||||
19616 | << VD << E->getSourceRange(); | ||||||||
19617 | return ExprError(); | ||||||||
19618 | } | ||||||||
19619 | |||||||||
19620 | // Modifying the declaration like this is friendly to IR-gen but | ||||||||
19621 | // also really dangerous. | ||||||||
19622 | VD->setType(DestType); | ||||||||
19623 | E->setType(Type); | ||||||||
19624 | E->setValueKind(ValueKind); | ||||||||
19625 | return E; | ||||||||
19626 | } | ||||||||
19627 | |||||||||
19628 | /// Check a cast of an unknown-any type. We intentionally only | ||||||||
19629 | /// trigger this for C-style casts. | ||||||||
19630 | ExprResult Sema::checkUnknownAnyCast(SourceRange TypeRange, QualType CastType, | ||||||||
19631 | Expr *CastExpr, CastKind &CastKind, | ||||||||
19632 | ExprValueKind &VK, CXXCastPath &Path) { | ||||||||
19633 | // The type we're casting to must be either void or complete. | ||||||||
19634 | if (!CastType->isVoidType() && | ||||||||
19635 | RequireCompleteType(TypeRange.getBegin(), CastType, | ||||||||
19636 | diag::err_typecheck_cast_to_incomplete)) | ||||||||
19637 | return ExprError(); | ||||||||
19638 | |||||||||
19639 | // Rewrite the casted expression from scratch. | ||||||||
19640 | ExprResult result = RebuildUnknownAnyExpr(*this, CastType).Visit(CastExpr); | ||||||||
19641 | if (!result.isUsable()) return ExprError(); | ||||||||
19642 | |||||||||
19643 | CastExpr = result.get(); | ||||||||
19644 | VK = CastExpr->getValueKind(); | ||||||||
19645 | CastKind = CK_NoOp; | ||||||||
19646 | |||||||||
19647 | return CastExpr; | ||||||||
19648 | } | ||||||||
19649 | |||||||||
19650 | ExprResult Sema::forceUnknownAnyToType(Expr *E, QualType ToType) { | ||||||||
19651 | return RebuildUnknownAnyExpr(*this, ToType).Visit(E); | ||||||||
19652 | } | ||||||||
19653 | |||||||||
19654 | ExprResult Sema::checkUnknownAnyArg(SourceLocation callLoc, | ||||||||
19655 | Expr *arg, QualType ¶mType) { | ||||||||
19656 | // If the syntactic form of the argument is not an explicit cast of | ||||||||
19657 | // any sort, just do default argument promotion. | ||||||||
19658 | ExplicitCastExpr *castArg = dyn_cast<ExplicitCastExpr>(arg->IgnoreParens()); | ||||||||
19659 | if (!castArg) { | ||||||||
19660 | ExprResult result = DefaultArgumentPromotion(arg); | ||||||||
19661 | if (result.isInvalid()) return ExprError(); | ||||||||
19662 | paramType = result.get()->getType(); | ||||||||
19663 | return result; | ||||||||
19664 | } | ||||||||
19665 | |||||||||
19666 | // Otherwise, use the type that was written in the explicit cast. | ||||||||
19667 | assert(!arg->hasPlaceholderType())(static_cast <bool> (!arg->hasPlaceholderType()) ? void (0) : __assert_fail ("!arg->hasPlaceholderType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19667, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19668 | paramType = castArg->getTypeAsWritten(); | ||||||||
19669 | |||||||||
19670 | // Copy-initialize a parameter of that type. | ||||||||
19671 | InitializedEntity entity = | ||||||||
19672 | InitializedEntity::InitializeParameter(Context, paramType, | ||||||||
19673 | /*consumed*/ false); | ||||||||
19674 | return PerformCopyInitialization(entity, callLoc, arg); | ||||||||
19675 | } | ||||||||
19676 | |||||||||
19677 | static ExprResult diagnoseUnknownAnyExpr(Sema &S, Expr *E) { | ||||||||
19678 | Expr *orig = E; | ||||||||
19679 | unsigned diagID = diag::err_uncasted_use_of_unknown_any; | ||||||||
19680 | while (true) { | ||||||||
19681 | E = E->IgnoreParenImpCasts(); | ||||||||
19682 | if (CallExpr *call = dyn_cast<CallExpr>(E)) { | ||||||||
19683 | E = call->getCallee(); | ||||||||
19684 | diagID = diag::err_uncasted_call_of_unknown_any; | ||||||||
19685 | } else { | ||||||||
19686 | break; | ||||||||
19687 | } | ||||||||
19688 | } | ||||||||
19689 | |||||||||
19690 | SourceLocation loc; | ||||||||
19691 | NamedDecl *d; | ||||||||
19692 | if (DeclRefExpr *ref = dyn_cast<DeclRefExpr>(E)) { | ||||||||
19693 | loc = ref->getLocation(); | ||||||||
19694 | d = ref->getDecl(); | ||||||||
19695 | } else if (MemberExpr *mem = dyn_cast<MemberExpr>(E)) { | ||||||||
19696 | loc = mem->getMemberLoc(); | ||||||||
19697 | d = mem->getMemberDecl(); | ||||||||
19698 | } else if (ObjCMessageExpr *msg = dyn_cast<ObjCMessageExpr>(E)) { | ||||||||
19699 | diagID = diag::err_uncasted_call_of_unknown_any; | ||||||||
19700 | loc = msg->getSelectorStartLoc(); | ||||||||
19701 | d = msg->getMethodDecl(); | ||||||||
19702 | if (!d) { | ||||||||
19703 | S.Diag(loc, diag::err_uncasted_send_to_unknown_any_method) | ||||||||
19704 | << static_cast<unsigned>(msg->isClassMessage()) << msg->getSelector() | ||||||||
19705 | << orig->getSourceRange(); | ||||||||
19706 | return ExprError(); | ||||||||
19707 | } | ||||||||
19708 | } else { | ||||||||
19709 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_expr) | ||||||||
19710 | << E->getSourceRange(); | ||||||||
19711 | return ExprError(); | ||||||||
19712 | } | ||||||||
19713 | |||||||||
19714 | S.Diag(loc, diagID) << d << orig->getSourceRange(); | ||||||||
19715 | |||||||||
19716 | // Never recoverable. | ||||||||
19717 | return ExprError(); | ||||||||
19718 | } | ||||||||
19719 | |||||||||
19720 | /// Check for operands with placeholder types and complain if found. | ||||||||
19721 | /// Returns ExprError() if there was an error and no recovery was possible. | ||||||||
19722 | ExprResult Sema::CheckPlaceholderExpr(Expr *E) { | ||||||||
19723 | if (!Context.isDependenceAllowed()) { | ||||||||
19724 | // C cannot handle TypoExpr nodes on either side of a binop because it | ||||||||
19725 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||||||
19726 | // been dealt with before checking the operands. | ||||||||
19727 | ExprResult Result = CorrectDelayedTyposInExpr(E); | ||||||||
19728 | if (!Result.isUsable()) return ExprError(); | ||||||||
19729 | E = Result.get(); | ||||||||
19730 | } | ||||||||
19731 | |||||||||
19732 | const BuiltinType *placeholderType = E->getType()->getAsPlaceholderType(); | ||||||||
19733 | if (!placeholderType) return E; | ||||||||
19734 | |||||||||
19735 | switch (placeholderType->getKind()) { | ||||||||
19736 | |||||||||
19737 | // Overloaded expressions. | ||||||||
19738 | case BuiltinType::Overload: { | ||||||||
19739 | // Try to resolve a single function template specialization. | ||||||||
19740 | // This is obligatory. | ||||||||
19741 | ExprResult Result = E; | ||||||||
19742 | if (ResolveAndFixSingleFunctionTemplateSpecialization(Result, false)) | ||||||||
19743 | return Result; | ||||||||
19744 | |||||||||
19745 | // No guarantees that ResolveAndFixSingleFunctionTemplateSpecialization | ||||||||
19746 | // leaves Result unchanged on failure. | ||||||||
19747 | Result = E; | ||||||||
19748 | if (resolveAndFixAddressOfSingleOverloadCandidate(Result)) | ||||||||
19749 | return Result; | ||||||||
19750 | |||||||||
19751 | // If that failed, try to recover with a call. | ||||||||
19752 | tryToRecoverWithCall(Result, PDiag(diag::err_ovl_unresolvable), | ||||||||
19753 | /*complain*/ true); | ||||||||
19754 | return Result; | ||||||||
19755 | } | ||||||||
19756 | |||||||||
19757 | // Bound member functions. | ||||||||
19758 | case BuiltinType::BoundMember: { | ||||||||
19759 | ExprResult result = E; | ||||||||
19760 | const Expr *BME = E->IgnoreParens(); | ||||||||
19761 | PartialDiagnostic PD = PDiag(diag::err_bound_member_function); | ||||||||
19762 | // Try to give a nicer diagnostic if it is a bound member that we recognize. | ||||||||
19763 | if (isa<CXXPseudoDestructorExpr>(BME)) { | ||||||||
19764 | PD = PDiag(diag::err_dtor_expr_without_call) << /*pseudo-destructor*/ 1; | ||||||||
19765 | } else if (const auto *ME = dyn_cast<MemberExpr>(BME)) { | ||||||||
19766 | if (ME->getMemberNameInfo().getName().getNameKind() == | ||||||||
19767 | DeclarationName::CXXDestructorName) | ||||||||
19768 | PD = PDiag(diag::err_dtor_expr_without_call) << /*destructor*/ 0; | ||||||||
19769 | } | ||||||||
19770 | tryToRecoverWithCall(result, PD, | ||||||||
19771 | /*complain*/ true); | ||||||||
19772 | return result; | ||||||||
19773 | } | ||||||||
19774 | |||||||||
19775 | // ARC unbridged casts. | ||||||||
19776 | case BuiltinType::ARCUnbridgedCast: { | ||||||||
19777 | Expr *realCast = stripARCUnbridgedCast(E); | ||||||||
19778 | diagnoseARCUnbridgedCast(realCast); | ||||||||
19779 | return realCast; | ||||||||
19780 | } | ||||||||
19781 | |||||||||
19782 | // Expressions of unknown type. | ||||||||
19783 | case BuiltinType::UnknownAny: | ||||||||
19784 | return diagnoseUnknownAnyExpr(*this, E); | ||||||||
19785 | |||||||||
19786 | // Pseudo-objects. | ||||||||
19787 | case BuiltinType::PseudoObject: | ||||||||
19788 | return checkPseudoObjectRValue(E); | ||||||||
19789 | |||||||||
19790 | case BuiltinType::BuiltinFn: { | ||||||||
19791 | // Accept __noop without parens by implicitly converting it to a call expr. | ||||||||
19792 | auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts()); | ||||||||
19793 | if (DRE) { | ||||||||
19794 | auto *FD = cast<FunctionDecl>(DRE->getDecl()); | ||||||||
19795 | if (FD->getBuiltinID() == Builtin::BI__noop) { | ||||||||
19796 | E = ImpCastExprToType(E, Context.getPointerType(FD->getType()), | ||||||||
19797 | CK_BuiltinFnToFnPtr) | ||||||||
19798 | .get(); | ||||||||
19799 | return CallExpr::Create(Context, E, /*Args=*/{}, Context.IntTy, | ||||||||
19800 | VK_PRValue, SourceLocation(), | ||||||||
19801 | FPOptionsOverride()); | ||||||||
19802 | } | ||||||||
19803 | } | ||||||||
19804 | |||||||||
19805 | Diag(E->getBeginLoc(), diag::err_builtin_fn_use); | ||||||||
19806 | return ExprError(); | ||||||||
19807 | } | ||||||||
19808 | |||||||||
19809 | case BuiltinType::IncompleteMatrixIdx: | ||||||||
19810 | Diag(cast<MatrixSubscriptExpr>(E->IgnoreParens()) | ||||||||
19811 | ->getRowIdx() | ||||||||
19812 | ->getBeginLoc(), | ||||||||
19813 | diag::err_matrix_incomplete_index); | ||||||||
19814 | return ExprError(); | ||||||||
19815 | |||||||||
19816 | // Expressions of unknown type. | ||||||||
19817 | case BuiltinType::OMPArraySection: | ||||||||
19818 | Diag(E->getBeginLoc(), diag::err_omp_array_section_use); | ||||||||
19819 | return ExprError(); | ||||||||
19820 | |||||||||
19821 | // Expressions of unknown type. | ||||||||
19822 | case BuiltinType::OMPArrayShaping: | ||||||||
19823 | return ExprError(Diag(E->getBeginLoc(), diag::err_omp_array_shaping_use)); | ||||||||
19824 | |||||||||
19825 | case BuiltinType::OMPIterator: | ||||||||
19826 | return ExprError(Diag(E->getBeginLoc(), diag::err_omp_iterator_use)); | ||||||||
19827 | |||||||||
19828 | // Everything else should be impossible. | ||||||||
19829 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
19830 | case BuiltinType::Id: | ||||||||
19831 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
19832 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
19833 | case BuiltinType::Id: | ||||||||
19834 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
19835 | #define SVE_TYPE(Name, Id, SingletonId) \ | ||||||||
19836 | case BuiltinType::Id: | ||||||||
19837 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||
19838 | #define PPC_VECTOR_TYPE(Name, Id, Size) \ | ||||||||
19839 | case BuiltinType::Id: | ||||||||
19840 | #include "clang/Basic/PPCTypes.def" | ||||||||
19841 | #define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id: | ||||||||
19842 | #include "clang/Basic/RISCVVTypes.def" | ||||||||
19843 | #define BUILTIN_TYPE(Id, SingletonId) case BuiltinType::Id: | ||||||||
19844 | #define PLACEHOLDER_TYPE(Id, SingletonId) | ||||||||
19845 | #include "clang/AST/BuiltinTypes.def" | ||||||||
19846 | break; | ||||||||
19847 | } | ||||||||
19848 | |||||||||
19849 | llvm_unreachable("invalid placeholder type!")::llvm::llvm_unreachable_internal("invalid placeholder type!" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19849); | ||||||||
19850 | } | ||||||||
19851 | |||||||||
19852 | bool Sema::CheckCaseExpression(Expr *E) { | ||||||||
19853 | if (E->isTypeDependent()) | ||||||||
19854 | return true; | ||||||||
19855 | if (E->isValueDependent() || E->isIntegerConstantExpr(Context)) | ||||||||
19856 | return E->getType()->isIntegralOrEnumerationType(); | ||||||||
19857 | return false; | ||||||||
19858 | } | ||||||||
19859 | |||||||||
19860 | /// ActOnObjCBoolLiteral - Parse {__objc_yes,__objc_no} literals. | ||||||||
19861 | ExprResult | ||||||||
19862 | Sema::ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind) { | ||||||||
19863 | assert((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) &&(static_cast <bool> ((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && "Unknown Objective-C Boolean value!" ) ? void (0) : __assert_fail ("(Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && \"Unknown Objective-C Boolean value!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19864, __extension__ __PRETTY_FUNCTION__)) | ||||||||
19864 | "Unknown Objective-C Boolean value!")(static_cast <bool> ((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && "Unknown Objective-C Boolean value!" ) ? void (0) : __assert_fail ("(Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && \"Unknown Objective-C Boolean value!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/lib/Sema/SemaExpr.cpp" , 19864, __extension__ __PRETTY_FUNCTION__)); | ||||||||
19865 | QualType BoolT = Context.ObjCBuiltinBoolTy; | ||||||||
19866 | if (!Context.getBOOLDecl()) { | ||||||||
19867 | LookupResult Result(*this, &Context.Idents.get("BOOL"), OpLoc, | ||||||||
19868 | Sema::LookupOrdinaryName); | ||||||||
19869 | if (LookupName(Result, getCurScope()) && Result.isSingleResult()) { | ||||||||
19870 | NamedDecl *ND = Result.getFoundDecl(); | ||||||||
19871 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(ND)) | ||||||||
19872 | Context.setBOOLDecl(TD); | ||||||||
19873 | } | ||||||||
19874 | } | ||||||||
19875 | if (Context.getBOOLDecl()) | ||||||||
19876 | BoolT = Context.getBOOLType(); | ||||||||
19877 | return new (Context) | ||||||||
19878 | ObjCBoolLiteralExpr(Kind == tok::kw___objc_yes, BoolT, OpLoc); | ||||||||
19879 | } | ||||||||
19880 | |||||||||
19881 | ExprResult Sema::ActOnObjCAvailabilityCheckExpr( | ||||||||
19882 | llvm::ArrayRef<AvailabilitySpec> AvailSpecs, SourceLocation AtLoc, | ||||||||
19883 | SourceLocation RParen) { | ||||||||
19884 | auto FindSpecVersion = [&](StringRef Platform) -> Optional<VersionTuple> { | ||||||||
19885 | auto Spec = llvm::find_if(AvailSpecs, [&](const AvailabilitySpec &Spec) { | ||||||||
19886 | return Spec.getPlatform() == Platform; | ||||||||
19887 | }); | ||||||||
19888 | // Transcribe the "ios" availability check to "maccatalyst" when compiling | ||||||||
19889 | // for "maccatalyst" if "maccatalyst" is not specified. | ||||||||
19890 | if (Spec == AvailSpecs.end() && Platform == "maccatalyst") { | ||||||||
19891 | Spec = llvm::find_if(AvailSpecs, [&](const AvailabilitySpec &Spec) { | ||||||||
19892 | return Spec.getPlatform() == "ios"; | ||||||||
19893 | }); | ||||||||
19894 | } | ||||||||
19895 | if (Spec == AvailSpecs.end()) | ||||||||
19896 | return None; | ||||||||
19897 | return Spec->getVersion(); | ||||||||
19898 | }; | ||||||||
19899 | |||||||||
19900 | VersionTuple Version; | ||||||||
19901 | if (auto MaybeVersion = | ||||||||
19902 | FindSpecVersion(Context.getTargetInfo().getPlatformName())) | ||||||||
19903 | Version = *MaybeVersion; | ||||||||
19904 | |||||||||
19905 | // The use of `@available` in the enclosing context should be analyzed to | ||||||||
19906 | // warn when it's used inappropriately (i.e. not if(@available)). | ||||||||
19907 | if (FunctionScopeInfo *Context = getCurFunctionAvailabilityContext()) | ||||||||
19908 | Context->HasPotentialAvailabilityViolations = true; | ||||||||
19909 | |||||||||
19910 | return new (Context) | ||||||||
19911 | ObjCAvailabilityCheckExpr(Version, AtLoc, RParen, Context.BoolTy); | ||||||||
19912 | } | ||||||||
19913 | |||||||||
19914 | ExprResult Sema::CreateRecoveryExpr(SourceLocation Begin, SourceLocation End, | ||||||||
19915 | ArrayRef<Expr *> SubExprs, QualType T) { | ||||||||
19916 | if (!Context.getLangOpts().RecoveryAST) | ||||||||
19917 | return ExprError(); | ||||||||
19918 | |||||||||
19919 | if (isSFINAEContext()) | ||||||||
19920 | return ExprError(); | ||||||||
19921 | |||||||||
19922 | if (T.isNull() || T->isUndeducedType() || | ||||||||
19923 | !Context.getLangOpts().RecoveryASTType) | ||||||||
19924 | // We don't know the concrete type, fallback to dependent type. | ||||||||
19925 | T = Context.DependentTy; | ||||||||
19926 | |||||||||
19927 | return RecoveryExpr::Create(Context, T, Begin, End, SubExprs); | ||||||||
19928 | } |
1 | //===- Type.h - C Language Family Type Representation -----------*- C++ -*-===// | ||||||||
2 | // | ||||||||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||||||
4 | // See https://llvm.org/LICENSE.txt for license information. | ||||||||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||||||
6 | // | ||||||||
7 | //===----------------------------------------------------------------------===// | ||||||||
8 | // | ||||||||
9 | /// \file | ||||||||
10 | /// C Language Family Type Representation | ||||||||
11 | /// | ||||||||
12 | /// This file defines the clang::Type interface and subclasses, used to | ||||||||
13 | /// represent types for languages in the C family. | ||||||||
14 | // | ||||||||
15 | //===----------------------------------------------------------------------===// | ||||||||
16 | |||||||||
17 | #ifndef LLVM_CLANG_AST_TYPE_H | ||||||||
18 | #define LLVM_CLANG_AST_TYPE_H | ||||||||
19 | |||||||||
20 | #include "clang/AST/DependenceFlags.h" | ||||||||
21 | #include "clang/AST/NestedNameSpecifier.h" | ||||||||
22 | #include "clang/AST/TemplateName.h" | ||||||||
23 | #include "clang/Basic/AddressSpaces.h" | ||||||||
24 | #include "clang/Basic/AttrKinds.h" | ||||||||
25 | #include "clang/Basic/Diagnostic.h" | ||||||||
26 | #include "clang/Basic/ExceptionSpecificationType.h" | ||||||||
27 | #include "clang/Basic/LLVM.h" | ||||||||
28 | #include "clang/Basic/Linkage.h" | ||||||||
29 | #include "clang/Basic/PartialDiagnostic.h" | ||||||||
30 | #include "clang/Basic/SourceLocation.h" | ||||||||
31 | #include "clang/Basic/Specifiers.h" | ||||||||
32 | #include "clang/Basic/Visibility.h" | ||||||||
33 | #include "llvm/ADT/APInt.h" | ||||||||
34 | #include "llvm/ADT/APSInt.h" | ||||||||
35 | #include "llvm/ADT/ArrayRef.h" | ||||||||
36 | #include "llvm/ADT/FoldingSet.h" | ||||||||
37 | #include "llvm/ADT/None.h" | ||||||||
38 | #include "llvm/ADT/Optional.h" | ||||||||
39 | #include "llvm/ADT/PointerIntPair.h" | ||||||||
40 | #include "llvm/ADT/PointerUnion.h" | ||||||||
41 | #include "llvm/ADT/StringRef.h" | ||||||||
42 | #include "llvm/ADT/Twine.h" | ||||||||
43 | #include "llvm/ADT/iterator_range.h" | ||||||||
44 | #include "llvm/Support/Casting.h" | ||||||||
45 | #include "llvm/Support/Compiler.h" | ||||||||
46 | #include "llvm/Support/ErrorHandling.h" | ||||||||
47 | #include "llvm/Support/PointerLikeTypeTraits.h" | ||||||||
48 | #include "llvm/Support/TrailingObjects.h" | ||||||||
49 | #include "llvm/Support/type_traits.h" | ||||||||
50 | #include <cassert> | ||||||||
51 | #include <cstddef> | ||||||||
52 | #include <cstdint> | ||||||||
53 | #include <cstring> | ||||||||
54 | #include <string> | ||||||||
55 | #include <type_traits> | ||||||||
56 | #include <utility> | ||||||||
57 | |||||||||
58 | namespace clang { | ||||||||
59 | |||||||||
60 | class ExtQuals; | ||||||||
61 | class QualType; | ||||||||
62 | class ConceptDecl; | ||||||||
63 | class TagDecl; | ||||||||
64 | class TemplateParameterList; | ||||||||
65 | class Type; | ||||||||
66 | |||||||||
67 | enum { | ||||||||
68 | TypeAlignmentInBits = 4, | ||||||||
69 | TypeAlignment = 1 << TypeAlignmentInBits | ||||||||
70 | }; | ||||||||
71 | |||||||||
72 | namespace serialization { | ||||||||
73 | template <class T> class AbstractTypeReader; | ||||||||
74 | template <class T> class AbstractTypeWriter; | ||||||||
75 | } | ||||||||
76 | |||||||||
77 | } // namespace clang | ||||||||
78 | |||||||||
79 | namespace llvm { | ||||||||
80 | |||||||||
81 | template <typename T> | ||||||||
82 | struct PointerLikeTypeTraits; | ||||||||
83 | template<> | ||||||||
84 | struct PointerLikeTypeTraits< ::clang::Type*> { | ||||||||
85 | static inline void *getAsVoidPointer(::clang::Type *P) { return P; } | ||||||||
86 | |||||||||
87 | static inline ::clang::Type *getFromVoidPointer(void *P) { | ||||||||
88 | return static_cast< ::clang::Type*>(P); | ||||||||
89 | } | ||||||||
90 | |||||||||
91 | static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits; | ||||||||
92 | }; | ||||||||
93 | |||||||||
94 | template<> | ||||||||
95 | struct PointerLikeTypeTraits< ::clang::ExtQuals*> { | ||||||||
96 | static inline void *getAsVoidPointer(::clang::ExtQuals *P) { return P; } | ||||||||
97 | |||||||||
98 | static inline ::clang::ExtQuals *getFromVoidPointer(void *P) { | ||||||||
99 | return static_cast< ::clang::ExtQuals*>(P); | ||||||||
100 | } | ||||||||
101 | |||||||||
102 | static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits; | ||||||||
103 | }; | ||||||||
104 | |||||||||
105 | } // namespace llvm | ||||||||
106 | |||||||||
107 | namespace clang { | ||||||||
108 | |||||||||
109 | class ASTContext; | ||||||||
110 | template <typename> class CanQual; | ||||||||
111 | class CXXRecordDecl; | ||||||||
112 | class DeclContext; | ||||||||
113 | class EnumDecl; | ||||||||
114 | class Expr; | ||||||||
115 | class ExtQualsTypeCommonBase; | ||||||||
116 | class FunctionDecl; | ||||||||
117 | class IdentifierInfo; | ||||||||
118 | class NamedDecl; | ||||||||
119 | class ObjCInterfaceDecl; | ||||||||
120 | class ObjCProtocolDecl; | ||||||||
121 | class ObjCTypeParamDecl; | ||||||||
122 | struct PrintingPolicy; | ||||||||
123 | class RecordDecl; | ||||||||
124 | class Stmt; | ||||||||
125 | class TagDecl; | ||||||||
126 | class TemplateArgument; | ||||||||
127 | class TemplateArgumentListInfo; | ||||||||
128 | class TemplateArgumentLoc; | ||||||||
129 | class TemplateTypeParmDecl; | ||||||||
130 | class TypedefNameDecl; | ||||||||
131 | class UnresolvedUsingTypenameDecl; | ||||||||
132 | |||||||||
133 | using CanQualType = CanQual<Type>; | ||||||||
134 | |||||||||
135 | // Provide forward declarations for all of the *Type classes. | ||||||||
136 | #define TYPE(Class, Base) class Class##Type; | ||||||||
137 | #include "clang/AST/TypeNodes.inc" | ||||||||
138 | |||||||||
139 | /// The collection of all-type qualifiers we support. | ||||||||
140 | /// Clang supports five independent qualifiers: | ||||||||
141 | /// * C99: const, volatile, and restrict | ||||||||
142 | /// * MS: __unaligned | ||||||||
143 | /// * Embedded C (TR18037): address spaces | ||||||||
144 | /// * Objective C: the GC attributes (none, weak, or strong) | ||||||||
145 | class Qualifiers { | ||||||||
146 | public: | ||||||||
147 | enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. | ||||||||
148 | Const = 0x1, | ||||||||
149 | Restrict = 0x2, | ||||||||
150 | Volatile = 0x4, | ||||||||
151 | CVRMask = Const | Volatile | Restrict | ||||||||
152 | }; | ||||||||
153 | |||||||||
154 | enum GC { | ||||||||
155 | GCNone = 0, | ||||||||
156 | Weak, | ||||||||
157 | Strong | ||||||||
158 | }; | ||||||||
159 | |||||||||
160 | enum ObjCLifetime { | ||||||||
161 | /// There is no lifetime qualification on this type. | ||||||||
162 | OCL_None, | ||||||||
163 | |||||||||
164 | /// This object can be modified without requiring retains or | ||||||||
165 | /// releases. | ||||||||
166 | OCL_ExplicitNone, | ||||||||
167 | |||||||||
168 | /// Assigning into this object requires the old value to be | ||||||||
169 | /// released and the new value to be retained. The timing of the | ||||||||
170 | /// release of the old value is inexact: it may be moved to | ||||||||
171 | /// immediately after the last known point where the value is | ||||||||
172 | /// live. | ||||||||
173 | OCL_Strong, | ||||||||
174 | |||||||||
175 | /// Reading or writing from this object requires a barrier call. | ||||||||
176 | OCL_Weak, | ||||||||
177 | |||||||||
178 | /// Assigning into this object requires a lifetime extension. | ||||||||
179 | OCL_Autoreleasing | ||||||||
180 | }; | ||||||||
181 | |||||||||
182 | enum { | ||||||||
183 | /// The maximum supported address space number. | ||||||||
184 | /// 23 bits should be enough for anyone. | ||||||||
185 | MaxAddressSpace = 0x7fffffu, | ||||||||
186 | |||||||||
187 | /// The width of the "fast" qualifier mask. | ||||||||
188 | FastWidth = 3, | ||||||||
189 | |||||||||
190 | /// The fast qualifier mask. | ||||||||
191 | FastMask = (1 << FastWidth) - 1 | ||||||||
192 | }; | ||||||||
193 | |||||||||
194 | /// Returns the common set of qualifiers while removing them from | ||||||||
195 | /// the given sets. | ||||||||
196 | static Qualifiers removeCommonQualifiers(Qualifiers &L, Qualifiers &R) { | ||||||||
197 | // If both are only CVR-qualified, bit operations are sufficient. | ||||||||
198 | if (!(L.Mask & ~CVRMask) && !(R.Mask & ~CVRMask)) { | ||||||||
199 | Qualifiers Q; | ||||||||
200 | Q.Mask = L.Mask & R.Mask; | ||||||||
201 | L.Mask &= ~Q.Mask; | ||||||||
202 | R.Mask &= ~Q.Mask; | ||||||||
203 | return Q; | ||||||||
204 | } | ||||||||
205 | |||||||||
206 | Qualifiers Q; | ||||||||
207 | unsigned CommonCRV = L.getCVRQualifiers() & R.getCVRQualifiers(); | ||||||||
208 | Q.addCVRQualifiers(CommonCRV); | ||||||||
209 | L.removeCVRQualifiers(CommonCRV); | ||||||||
210 | R.removeCVRQualifiers(CommonCRV); | ||||||||
211 | |||||||||
212 | if (L.getObjCGCAttr() == R.getObjCGCAttr()) { | ||||||||
213 | Q.setObjCGCAttr(L.getObjCGCAttr()); | ||||||||
214 | L.removeObjCGCAttr(); | ||||||||
215 | R.removeObjCGCAttr(); | ||||||||
216 | } | ||||||||
217 | |||||||||
218 | if (L.getObjCLifetime() == R.getObjCLifetime()) { | ||||||||
219 | Q.setObjCLifetime(L.getObjCLifetime()); | ||||||||
220 | L.removeObjCLifetime(); | ||||||||
221 | R.removeObjCLifetime(); | ||||||||
222 | } | ||||||||
223 | |||||||||
224 | if (L.getAddressSpace() == R.getAddressSpace()) { | ||||||||
225 | Q.setAddressSpace(L.getAddressSpace()); | ||||||||
226 | L.removeAddressSpace(); | ||||||||
227 | R.removeAddressSpace(); | ||||||||
228 | } | ||||||||
229 | return Q; | ||||||||
230 | } | ||||||||
231 | |||||||||
232 | static Qualifiers fromFastMask(unsigned Mask) { | ||||||||
233 | Qualifiers Qs; | ||||||||
234 | Qs.addFastQualifiers(Mask); | ||||||||
235 | return Qs; | ||||||||
236 | } | ||||||||
237 | |||||||||
238 | static Qualifiers fromCVRMask(unsigned CVR) { | ||||||||
239 | Qualifiers Qs; | ||||||||
240 | Qs.addCVRQualifiers(CVR); | ||||||||
241 | return Qs; | ||||||||
242 | } | ||||||||
243 | |||||||||
244 | static Qualifiers fromCVRUMask(unsigned CVRU) { | ||||||||
245 | Qualifiers Qs; | ||||||||
246 | Qs.addCVRUQualifiers(CVRU); | ||||||||
247 | return Qs; | ||||||||
248 | } | ||||||||
249 | |||||||||
250 | // Deserialize qualifiers from an opaque representation. | ||||||||
251 | static Qualifiers fromOpaqueValue(unsigned opaque) { | ||||||||
252 | Qualifiers Qs; | ||||||||
253 | Qs.Mask = opaque; | ||||||||
254 | return Qs; | ||||||||
255 | } | ||||||||
256 | |||||||||
257 | // Serialize these qualifiers into an opaque representation. | ||||||||
258 | unsigned getAsOpaqueValue() const { | ||||||||
259 | return Mask; | ||||||||
260 | } | ||||||||
261 | |||||||||
262 | bool hasConst() const { return Mask & Const; } | ||||||||
263 | bool hasOnlyConst() const { return Mask == Const; } | ||||||||
264 | void removeConst() { Mask &= ~Const; } | ||||||||
265 | void addConst() { Mask |= Const; } | ||||||||
266 | |||||||||
267 | bool hasVolatile() const { return Mask & Volatile; } | ||||||||
268 | bool hasOnlyVolatile() const { return Mask == Volatile; } | ||||||||
269 | void removeVolatile() { Mask &= ~Volatile; } | ||||||||
270 | void addVolatile() { Mask |= Volatile; } | ||||||||
271 | |||||||||
272 | bool hasRestrict() const { return Mask & Restrict; } | ||||||||
273 | bool hasOnlyRestrict() const { return Mask == Restrict; } | ||||||||
274 | void removeRestrict() { Mask &= ~Restrict; } | ||||||||
275 | void addRestrict() { Mask |= Restrict; } | ||||||||
276 | |||||||||
277 | bool hasCVRQualifiers() const { return getCVRQualifiers(); } | ||||||||
278 | unsigned getCVRQualifiers() const { return Mask & CVRMask; } | ||||||||
279 | unsigned getCVRUQualifiers() const { return Mask & (CVRMask | UMask); } | ||||||||
280 | |||||||||
281 | void setCVRQualifiers(unsigned mask) { | ||||||||
282 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")(static_cast <bool> (!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? void (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 282, __extension__ __PRETTY_FUNCTION__)); | ||||||||
283 | Mask = (Mask & ~CVRMask) | mask; | ||||||||
284 | } | ||||||||
285 | void removeCVRQualifiers(unsigned mask) { | ||||||||
286 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")(static_cast <bool> (!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? void (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 286, __extension__ __PRETTY_FUNCTION__)); | ||||||||
287 | Mask &= ~mask; | ||||||||
288 | } | ||||||||
289 | void removeCVRQualifiers() { | ||||||||
290 | removeCVRQualifiers(CVRMask); | ||||||||
291 | } | ||||||||
292 | void addCVRQualifiers(unsigned mask) { | ||||||||
293 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")(static_cast <bool> (!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? void (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 293, __extension__ __PRETTY_FUNCTION__)); | ||||||||
294 | Mask |= mask; | ||||||||
295 | } | ||||||||
296 | void addCVRUQualifiers(unsigned mask) { | ||||||||
297 | assert(!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits")(static_cast <bool> (!(mask & ~CVRMask & ~UMask ) && "bitmask contains non-CVRU bits") ? void (0) : __assert_fail ("!(mask & ~CVRMask & ~UMask) && \"bitmask contains non-CVRU bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 297, __extension__ __PRETTY_FUNCTION__)); | ||||||||
298 | Mask |= mask; | ||||||||
299 | } | ||||||||
300 | |||||||||
301 | bool hasUnaligned() const { return Mask & UMask; } | ||||||||
302 | void setUnaligned(bool flag) { | ||||||||
303 | Mask = (Mask & ~UMask) | (flag ? UMask : 0); | ||||||||
304 | } | ||||||||
305 | void removeUnaligned() { Mask &= ~UMask; } | ||||||||
306 | void addUnaligned() { Mask |= UMask; } | ||||||||
307 | |||||||||
308 | bool hasObjCGCAttr() const { return Mask & GCAttrMask; } | ||||||||
309 | GC getObjCGCAttr() const { return GC((Mask & GCAttrMask) >> GCAttrShift); } | ||||||||
310 | void setObjCGCAttr(GC type) { | ||||||||
311 | Mask = (Mask & ~GCAttrMask) | (type << GCAttrShift); | ||||||||
312 | } | ||||||||
313 | void removeObjCGCAttr() { setObjCGCAttr(GCNone); } | ||||||||
314 | void addObjCGCAttr(GC type) { | ||||||||
315 | assert(type)(static_cast <bool> (type) ? void (0) : __assert_fail ( "type", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 315, __extension__ __PRETTY_FUNCTION__)); | ||||||||
316 | setObjCGCAttr(type); | ||||||||
317 | } | ||||||||
318 | Qualifiers withoutObjCGCAttr() const { | ||||||||
319 | Qualifiers qs = *this; | ||||||||
320 | qs.removeObjCGCAttr(); | ||||||||
321 | return qs; | ||||||||
322 | } | ||||||||
323 | Qualifiers withoutObjCLifetime() const { | ||||||||
324 | Qualifiers qs = *this; | ||||||||
325 | qs.removeObjCLifetime(); | ||||||||
326 | return qs; | ||||||||
327 | } | ||||||||
328 | Qualifiers withoutAddressSpace() const { | ||||||||
329 | Qualifiers qs = *this; | ||||||||
330 | qs.removeAddressSpace(); | ||||||||
331 | return qs; | ||||||||
332 | } | ||||||||
333 | |||||||||
334 | bool hasObjCLifetime() const { return Mask & LifetimeMask; } | ||||||||
335 | ObjCLifetime getObjCLifetime() const { | ||||||||
336 | return ObjCLifetime((Mask & LifetimeMask) >> LifetimeShift); | ||||||||
337 | } | ||||||||
338 | void setObjCLifetime(ObjCLifetime type) { | ||||||||
339 | Mask = (Mask & ~LifetimeMask) | (type << LifetimeShift); | ||||||||
340 | } | ||||||||
341 | void removeObjCLifetime() { setObjCLifetime(OCL_None); } | ||||||||
342 | void addObjCLifetime(ObjCLifetime type) { | ||||||||
343 | assert(type)(static_cast <bool> (type) ? void (0) : __assert_fail ( "type", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 343, __extension__ __PRETTY_FUNCTION__)); | ||||||||
344 | assert(!hasObjCLifetime())(static_cast <bool> (!hasObjCLifetime()) ? void (0) : __assert_fail ("!hasObjCLifetime()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 344, __extension__ __PRETTY_FUNCTION__)); | ||||||||
345 | Mask |= (type << LifetimeShift); | ||||||||
346 | } | ||||||||
347 | |||||||||
348 | /// True if the lifetime is neither None or ExplicitNone. | ||||||||
349 | bool hasNonTrivialObjCLifetime() const { | ||||||||
350 | ObjCLifetime lifetime = getObjCLifetime(); | ||||||||
351 | return (lifetime > OCL_ExplicitNone); | ||||||||
352 | } | ||||||||
353 | |||||||||
354 | /// True if the lifetime is either strong or weak. | ||||||||
355 | bool hasStrongOrWeakObjCLifetime() const { | ||||||||
356 | ObjCLifetime lifetime = getObjCLifetime(); | ||||||||
357 | return (lifetime == OCL_Strong || lifetime == OCL_Weak); | ||||||||
358 | } | ||||||||
359 | |||||||||
360 | bool hasAddressSpace() const { return Mask & AddressSpaceMask; } | ||||||||
361 | LangAS getAddressSpace() const { | ||||||||
362 | return static_cast<LangAS>(Mask >> AddressSpaceShift); | ||||||||
363 | } | ||||||||
364 | bool hasTargetSpecificAddressSpace() const { | ||||||||
365 | return isTargetAddressSpace(getAddressSpace()); | ||||||||
366 | } | ||||||||
367 | /// Get the address space attribute value to be printed by diagnostics. | ||||||||
368 | unsigned getAddressSpaceAttributePrintValue() const { | ||||||||
369 | auto Addr = getAddressSpace(); | ||||||||
370 | // This function is not supposed to be used with language specific | ||||||||
371 | // address spaces. If that happens, the diagnostic message should consider | ||||||||
372 | // printing the QualType instead of the address space value. | ||||||||
373 | assert(Addr == LangAS::Default || hasTargetSpecificAddressSpace())(static_cast <bool> (Addr == LangAS::Default || hasTargetSpecificAddressSpace ()) ? void (0) : __assert_fail ("Addr == LangAS::Default || hasTargetSpecificAddressSpace()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 373, __extension__ __PRETTY_FUNCTION__)); | ||||||||
374 | if (Addr != LangAS::Default) | ||||||||
375 | return toTargetAddressSpace(Addr); | ||||||||
376 | // TODO: The diagnostic messages where Addr may be 0 should be fixed | ||||||||
377 | // since it cannot differentiate the situation where 0 denotes the default | ||||||||
378 | // address space or user specified __attribute__((address_space(0))). | ||||||||
379 | return 0; | ||||||||
380 | } | ||||||||
381 | void setAddressSpace(LangAS space) { | ||||||||
382 | assert((unsigned)space <= MaxAddressSpace)(static_cast <bool> ((unsigned)space <= MaxAddressSpace ) ? void (0) : __assert_fail ("(unsigned)space <= MaxAddressSpace" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 382, __extension__ __PRETTY_FUNCTION__)); | ||||||||
383 | Mask = (Mask & ~AddressSpaceMask) | ||||||||
384 | | (((uint32_t) space) << AddressSpaceShift); | ||||||||
385 | } | ||||||||
386 | void removeAddressSpace() { setAddressSpace(LangAS::Default); } | ||||||||
387 | void addAddressSpace(LangAS space) { | ||||||||
388 | assert(space != LangAS::Default)(static_cast <bool> (space != LangAS::Default) ? void ( 0) : __assert_fail ("space != LangAS::Default", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 388, __extension__ __PRETTY_FUNCTION__)); | ||||||||
389 | setAddressSpace(space); | ||||||||
390 | } | ||||||||
391 | |||||||||
392 | // Fast qualifiers are those that can be allocated directly | ||||||||
393 | // on a QualType object. | ||||||||
394 | bool hasFastQualifiers() const { return getFastQualifiers(); } | ||||||||
395 | unsigned getFastQualifiers() const { return Mask & FastMask; } | ||||||||
396 | void setFastQualifiers(unsigned mask) { | ||||||||
397 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")(static_cast <bool> (!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits") ? void (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 397, __extension__ __PRETTY_FUNCTION__)); | ||||||||
398 | Mask = (Mask & ~FastMask) | mask; | ||||||||
399 | } | ||||||||
400 | void removeFastQualifiers(unsigned mask) { | ||||||||
401 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")(static_cast <bool> (!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits") ? void (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 401, __extension__ __PRETTY_FUNCTION__)); | ||||||||
402 | Mask &= ~mask; | ||||||||
403 | } | ||||||||
404 | void removeFastQualifiers() { | ||||||||
405 | removeFastQualifiers(FastMask); | ||||||||
406 | } | ||||||||
407 | void addFastQualifiers(unsigned mask) { | ||||||||
408 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")(static_cast <bool> (!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits") ? void (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 408, __extension__ __PRETTY_FUNCTION__)); | ||||||||
409 | Mask |= mask; | ||||||||
410 | } | ||||||||
411 | |||||||||
412 | /// Return true if the set contains any qualifiers which require an ExtQuals | ||||||||
413 | /// node to be allocated. | ||||||||
414 | bool hasNonFastQualifiers() const { return Mask & ~FastMask; } | ||||||||
415 | Qualifiers getNonFastQualifiers() const { | ||||||||
416 | Qualifiers Quals = *this; | ||||||||
417 | Quals.setFastQualifiers(0); | ||||||||
418 | return Quals; | ||||||||
419 | } | ||||||||
420 | |||||||||
421 | /// Return true if the set contains any qualifiers. | ||||||||
422 | bool hasQualifiers() const { return Mask; } | ||||||||
423 | bool empty() const { return !Mask; } | ||||||||
424 | |||||||||
425 | /// Add the qualifiers from the given set to this set. | ||||||||
426 | void addQualifiers(Qualifiers Q) { | ||||||||
427 | // If the other set doesn't have any non-boolean qualifiers, just | ||||||||
428 | // bit-or it in. | ||||||||
429 | if (!(Q.Mask & ~CVRMask)) | ||||||||
430 | Mask |= Q.Mask; | ||||||||
431 | else { | ||||||||
432 | Mask |= (Q.Mask & CVRMask); | ||||||||
433 | if (Q.hasAddressSpace()) | ||||||||
434 | addAddressSpace(Q.getAddressSpace()); | ||||||||
435 | if (Q.hasObjCGCAttr()) | ||||||||
436 | addObjCGCAttr(Q.getObjCGCAttr()); | ||||||||
437 | if (Q.hasObjCLifetime()) | ||||||||
438 | addObjCLifetime(Q.getObjCLifetime()); | ||||||||
439 | } | ||||||||
440 | } | ||||||||
441 | |||||||||
442 | /// Remove the qualifiers from the given set from this set. | ||||||||
443 | void removeQualifiers(Qualifiers Q) { | ||||||||
444 | // If the other set doesn't have any non-boolean qualifiers, just | ||||||||
445 | // bit-and the inverse in. | ||||||||
446 | if (!(Q.Mask & ~CVRMask)) | ||||||||
447 | Mask &= ~Q.Mask; | ||||||||
448 | else { | ||||||||
449 | Mask &= ~(Q.Mask & CVRMask); | ||||||||
450 | if (getObjCGCAttr() == Q.getObjCGCAttr()) | ||||||||
451 | removeObjCGCAttr(); | ||||||||
452 | if (getObjCLifetime() == Q.getObjCLifetime()) | ||||||||
453 | removeObjCLifetime(); | ||||||||
454 | if (getAddressSpace() == Q.getAddressSpace()) | ||||||||
455 | removeAddressSpace(); | ||||||||
456 | } | ||||||||
457 | } | ||||||||
458 | |||||||||
459 | /// Add the qualifiers from the given set to this set, given that | ||||||||
460 | /// they don't conflict. | ||||||||
461 | void addConsistentQualifiers(Qualifiers qs) { | ||||||||
462 | assert(getAddressSpace() == qs.getAddressSpace() ||(static_cast <bool> (getAddressSpace() == qs.getAddressSpace () || !hasAddressSpace() || !qs.hasAddressSpace()) ? void (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 463, __extension__ __PRETTY_FUNCTION__)) | ||||||||
463 | !hasAddressSpace() || !qs.hasAddressSpace())(static_cast <bool> (getAddressSpace() == qs.getAddressSpace () || !hasAddressSpace() || !qs.hasAddressSpace()) ? void (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 463, __extension__ __PRETTY_FUNCTION__)); | ||||||||
464 | assert(getObjCGCAttr() == qs.getObjCGCAttr() ||(static_cast <bool> (getObjCGCAttr() == qs.getObjCGCAttr () || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? void (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 465, __extension__ __PRETTY_FUNCTION__)) | ||||||||
465 | !hasObjCGCAttr() || !qs.hasObjCGCAttr())(static_cast <bool> (getObjCGCAttr() == qs.getObjCGCAttr () || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? void (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 465, __extension__ __PRETTY_FUNCTION__)); | ||||||||
466 | assert(getObjCLifetime() == qs.getObjCLifetime() ||(static_cast <bool> (getObjCLifetime() == qs.getObjCLifetime () || !hasObjCLifetime() || !qs.hasObjCLifetime()) ? void (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 467, __extension__ __PRETTY_FUNCTION__)) | ||||||||
467 | !hasObjCLifetime() || !qs.hasObjCLifetime())(static_cast <bool> (getObjCLifetime() == qs.getObjCLifetime () || !hasObjCLifetime() || !qs.hasObjCLifetime()) ? void (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 467, __extension__ __PRETTY_FUNCTION__)); | ||||||||
468 | Mask |= qs.Mask; | ||||||||
469 | } | ||||||||
470 | |||||||||
471 | /// Returns true if address space A is equal to or a superset of B. | ||||||||
472 | /// OpenCL v2.0 defines conversion rules (OpenCLC v2.0 s6.5.5) and notion of | ||||||||
473 | /// overlapping address spaces. | ||||||||
474 | /// CL1.1 or CL1.2: | ||||||||
475 | /// every address space is a superset of itself. | ||||||||
476 | /// CL2.0 adds: | ||||||||
477 | /// __generic is a superset of any address space except for __constant. | ||||||||
478 | static bool isAddressSpaceSupersetOf(LangAS A, LangAS B) { | ||||||||
479 | // Address spaces must match exactly. | ||||||||
480 | return A == B || | ||||||||
481 | // Otherwise in OpenCLC v2.0 s6.5.5: every address space except | ||||||||
482 | // for __constant can be used as __generic. | ||||||||
483 | (A == LangAS::opencl_generic && B != LangAS::opencl_constant) || | ||||||||
484 | // We also define global_device and global_host address spaces, | ||||||||
485 | // to distinguish global pointers allocated on host from pointers | ||||||||
486 | // allocated on device, which are a subset of __global. | ||||||||
487 | (A == LangAS::opencl_global && (B == LangAS::opencl_global_device || | ||||||||
488 | B == LangAS::opencl_global_host)) || | ||||||||
489 | (A == LangAS::sycl_global && (B == LangAS::sycl_global_device || | ||||||||
490 | B == LangAS::sycl_global_host)) || | ||||||||
491 | // Consider pointer size address spaces to be equivalent to default. | ||||||||
492 | ((isPtrSizeAddressSpace(A) || A == LangAS::Default) && | ||||||||
493 | (isPtrSizeAddressSpace(B) || B == LangAS::Default)) || | ||||||||
494 | // Default is a superset of SYCL address spaces. | ||||||||
495 | (A == LangAS::Default && | ||||||||
496 | (B == LangAS::sycl_private || B == LangAS::sycl_local || | ||||||||
497 | B == LangAS::sycl_global || B == LangAS::sycl_global_device || | ||||||||
498 | B == LangAS::sycl_global_host)) || | ||||||||
499 | // In HIP device compilation, any cuda address space is allowed | ||||||||
500 | // to implicitly cast into the default address space. | ||||||||
501 | (A == LangAS::Default && | ||||||||
502 | (B == LangAS::cuda_constant || B == LangAS::cuda_device || | ||||||||
503 | B == LangAS::cuda_shared)); | ||||||||
504 | } | ||||||||
505 | |||||||||
506 | /// Returns true if the address space in these qualifiers is equal to or | ||||||||
507 | /// a superset of the address space in the argument qualifiers. | ||||||||
508 | bool isAddressSpaceSupersetOf(Qualifiers other) const { | ||||||||
509 | return isAddressSpaceSupersetOf(getAddressSpace(), other.getAddressSpace()); | ||||||||
510 | } | ||||||||
511 | |||||||||
512 | /// Determines if these qualifiers compatibly include another set. | ||||||||
513 | /// Generally this answers the question of whether an object with the other | ||||||||
514 | /// qualifiers can be safely used as an object with these qualifiers. | ||||||||
515 | bool compatiblyIncludes(Qualifiers other) const { | ||||||||
516 | return isAddressSpaceSupersetOf(other) && | ||||||||
517 | // ObjC GC qualifiers can match, be added, or be removed, but can't | ||||||||
518 | // be changed. | ||||||||
519 | (getObjCGCAttr() == other.getObjCGCAttr() || !hasObjCGCAttr() || | ||||||||
520 | !other.hasObjCGCAttr()) && | ||||||||
521 | // ObjC lifetime qualifiers must match exactly. | ||||||||
522 | getObjCLifetime() == other.getObjCLifetime() && | ||||||||
523 | // CVR qualifiers may subset. | ||||||||
524 | (((Mask & CVRMask) | (other.Mask & CVRMask)) == (Mask & CVRMask)) && | ||||||||
525 | // U qualifier may superset. | ||||||||
526 | (!other.hasUnaligned() || hasUnaligned()); | ||||||||
527 | } | ||||||||
528 | |||||||||
529 | /// Determines if these qualifiers compatibly include another set of | ||||||||
530 | /// qualifiers from the narrow perspective of Objective-C ARC lifetime. | ||||||||
531 | /// | ||||||||
532 | /// One set of Objective-C lifetime qualifiers compatibly includes the other | ||||||||
533 | /// if the lifetime qualifiers match, or if both are non-__weak and the | ||||||||
534 | /// including set also contains the 'const' qualifier, or both are non-__weak | ||||||||
535 | /// and one is None (which can only happen in non-ARC modes). | ||||||||
536 | bool compatiblyIncludesObjCLifetime(Qualifiers other) const { | ||||||||
537 | if (getObjCLifetime() == other.getObjCLifetime()) | ||||||||
538 | return true; | ||||||||
539 | |||||||||
540 | if (getObjCLifetime() == OCL_Weak || other.getObjCLifetime() == OCL_Weak) | ||||||||
541 | return false; | ||||||||
542 | |||||||||
543 | if (getObjCLifetime() == OCL_None || other.getObjCLifetime() == OCL_None) | ||||||||
544 | return true; | ||||||||
545 | |||||||||
546 | return hasConst(); | ||||||||
547 | } | ||||||||
548 | |||||||||
549 | /// Determine whether this set of qualifiers is a strict superset of | ||||||||
550 | /// another set of qualifiers, not considering qualifier compatibility. | ||||||||
551 | bool isStrictSupersetOf(Qualifiers Other) const; | ||||||||
552 | |||||||||
553 | bool operator==(Qualifiers Other) const { return Mask == Other.Mask; } | ||||||||
554 | bool operator!=(Qualifiers Other) const { return Mask != Other.Mask; } | ||||||||
555 | |||||||||
556 | explicit operator bool() const { return hasQualifiers(); } | ||||||||
557 | |||||||||
558 | Qualifiers &operator+=(Qualifiers R) { | ||||||||
559 | addQualifiers(R); | ||||||||
560 | return *this; | ||||||||
561 | } | ||||||||
562 | |||||||||
563 | // Union two qualifier sets. If an enumerated qualifier appears | ||||||||
564 | // in both sets, use the one from the right. | ||||||||
565 | friend Qualifiers operator+(Qualifiers L, Qualifiers R) { | ||||||||
566 | L += R; | ||||||||
567 | return L; | ||||||||
568 | } | ||||||||
569 | |||||||||
570 | Qualifiers &operator-=(Qualifiers R) { | ||||||||
571 | removeQualifiers(R); | ||||||||
572 | return *this; | ||||||||
573 | } | ||||||||
574 | |||||||||
575 | /// Compute the difference between two qualifier sets. | ||||||||
576 | friend Qualifiers operator-(Qualifiers L, Qualifiers R) { | ||||||||
577 | L -= R; | ||||||||
578 | return L; | ||||||||
579 | } | ||||||||
580 | |||||||||
581 | std::string getAsString() const; | ||||||||
582 | std::string getAsString(const PrintingPolicy &Policy) const; | ||||||||
583 | |||||||||
584 | static std::string getAddrSpaceAsString(LangAS AS); | ||||||||
585 | |||||||||
586 | bool isEmptyWhenPrinted(const PrintingPolicy &Policy) const; | ||||||||
587 | void print(raw_ostream &OS, const PrintingPolicy &Policy, | ||||||||
588 | bool appendSpaceIfNonEmpty = false) const; | ||||||||
589 | |||||||||
590 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
591 | ID.AddInteger(Mask); | ||||||||
592 | } | ||||||||
593 | |||||||||
594 | private: | ||||||||
595 | // bits: |0 1 2|3|4 .. 5|6 .. 8|9 ... 31| | ||||||||
596 | // |C R V|U|GCAttr|Lifetime|AddressSpace| | ||||||||
597 | uint32_t Mask = 0; | ||||||||
598 | |||||||||
599 | static const uint32_t UMask = 0x8; | ||||||||
600 | static const uint32_t UShift = 3; | ||||||||
601 | static const uint32_t GCAttrMask = 0x30; | ||||||||
602 | static const uint32_t GCAttrShift = 4; | ||||||||
603 | static const uint32_t LifetimeMask = 0x1C0; | ||||||||
604 | static const uint32_t LifetimeShift = 6; | ||||||||
605 | static const uint32_t AddressSpaceMask = | ||||||||
606 | ~(CVRMask | UMask | GCAttrMask | LifetimeMask); | ||||||||
607 | static const uint32_t AddressSpaceShift = 9; | ||||||||
608 | }; | ||||||||
609 | |||||||||
610 | /// A std::pair-like structure for storing a qualified type split | ||||||||
611 | /// into its local qualifiers and its locally-unqualified type. | ||||||||
612 | struct SplitQualType { | ||||||||
613 | /// The locally-unqualified type. | ||||||||
614 | const Type *Ty = nullptr; | ||||||||
615 | |||||||||
616 | /// The local qualifiers. | ||||||||
617 | Qualifiers Quals; | ||||||||
618 | |||||||||
619 | SplitQualType() = default; | ||||||||
620 | SplitQualType(const Type *ty, Qualifiers qs) : Ty(ty), Quals(qs) {} | ||||||||
621 | |||||||||
622 | SplitQualType getSingleStepDesugaredType() const; // end of this file | ||||||||
623 | |||||||||
624 | // Make std::tie work. | ||||||||
625 | std::pair<const Type *,Qualifiers> asPair() const { | ||||||||
626 | return std::pair<const Type *, Qualifiers>(Ty, Quals); | ||||||||
627 | } | ||||||||
628 | |||||||||
629 | friend bool operator==(SplitQualType a, SplitQualType b) { | ||||||||
630 | return a.Ty == b.Ty && a.Quals == b.Quals; | ||||||||
631 | } | ||||||||
632 | friend bool operator!=(SplitQualType a, SplitQualType b) { | ||||||||
633 | return a.Ty != b.Ty || a.Quals != b.Quals; | ||||||||
634 | } | ||||||||
635 | }; | ||||||||
636 | |||||||||
637 | /// The kind of type we are substituting Objective-C type arguments into. | ||||||||
638 | /// | ||||||||
639 | /// The kind of substitution affects the replacement of type parameters when | ||||||||
640 | /// no concrete type information is provided, e.g., when dealing with an | ||||||||
641 | /// unspecialized type. | ||||||||
642 | enum class ObjCSubstitutionContext { | ||||||||
643 | /// An ordinary type. | ||||||||
644 | Ordinary, | ||||||||
645 | |||||||||
646 | /// The result type of a method or function. | ||||||||
647 | Result, | ||||||||
648 | |||||||||
649 | /// The parameter type of a method or function. | ||||||||
650 | Parameter, | ||||||||
651 | |||||||||
652 | /// The type of a property. | ||||||||
653 | Property, | ||||||||
654 | |||||||||
655 | /// The superclass of a type. | ||||||||
656 | Superclass, | ||||||||
657 | }; | ||||||||
658 | |||||||||
659 | /// A (possibly-)qualified type. | ||||||||
660 | /// | ||||||||
661 | /// For efficiency, we don't store CV-qualified types as nodes on their | ||||||||
662 | /// own: instead each reference to a type stores the qualifiers. This | ||||||||
663 | /// greatly reduces the number of nodes we need to allocate for types (for | ||||||||
664 | /// example we only need one for 'int', 'const int', 'volatile int', | ||||||||
665 | /// 'const volatile int', etc). | ||||||||
666 | /// | ||||||||
667 | /// As an added efficiency bonus, instead of making this a pair, we | ||||||||
668 | /// just store the two bits we care about in the low bits of the | ||||||||
669 | /// pointer. To handle the packing/unpacking, we make QualType be a | ||||||||
670 | /// simple wrapper class that acts like a smart pointer. A third bit | ||||||||
671 | /// indicates whether there are extended qualifiers present, in which | ||||||||
672 | /// case the pointer points to a special structure. | ||||||||
673 | class QualType { | ||||||||
674 | friend class QualifierCollector; | ||||||||
675 | |||||||||
676 | // Thankfully, these are efficiently composable. | ||||||||
677 | llvm::PointerIntPair<llvm::PointerUnion<const Type *, const ExtQuals *>, | ||||||||
678 | Qualifiers::FastWidth> Value; | ||||||||
679 | |||||||||
680 | const ExtQuals *getExtQualsUnsafe() const { | ||||||||
681 | return Value.getPointer().get<const ExtQuals*>(); | ||||||||
682 | } | ||||||||
683 | |||||||||
684 | const Type *getTypePtrUnsafe() const { | ||||||||
685 | return Value.getPointer().get<const Type*>(); | ||||||||
686 | } | ||||||||
687 | |||||||||
688 | const ExtQualsTypeCommonBase *getCommonPtr() const { | ||||||||
689 | assert(!isNull() && "Cannot retrieve a NULL type pointer")(static_cast <bool> (!isNull() && "Cannot retrieve a NULL type pointer" ) ? void (0) : __assert_fail ("!isNull() && \"Cannot retrieve a NULL type pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 689, __extension__ __PRETTY_FUNCTION__)); | ||||||||
690 | auto CommonPtrVal = reinterpret_cast<uintptr_t>(Value.getOpaqueValue()); | ||||||||
691 | CommonPtrVal &= ~(uintptr_t)((1 << TypeAlignmentInBits) - 1); | ||||||||
692 | return reinterpret_cast<ExtQualsTypeCommonBase*>(CommonPtrVal); | ||||||||
693 | } | ||||||||
694 | |||||||||
695 | public: | ||||||||
696 | QualType() = default; | ||||||||
697 | QualType(const Type *Ptr, unsigned Quals) : Value(Ptr, Quals) {} | ||||||||
698 | QualType(const ExtQuals *Ptr, unsigned Quals) : Value(Ptr, Quals) {} | ||||||||
699 | |||||||||
700 | unsigned getLocalFastQualifiers() const { return Value.getInt(); } | ||||||||
701 | void setLocalFastQualifiers(unsigned Quals) { Value.setInt(Quals); } | ||||||||
702 | |||||||||
703 | /// Retrieves a pointer to the underlying (unqualified) type. | ||||||||
704 | /// | ||||||||
705 | /// This function requires that the type not be NULL. If the type might be | ||||||||
706 | /// NULL, use the (slightly less efficient) \c getTypePtrOrNull(). | ||||||||
707 | const Type *getTypePtr() const; | ||||||||
708 | |||||||||
709 | const Type *getTypePtrOrNull() const; | ||||||||
710 | |||||||||
711 | /// Retrieves a pointer to the name of the base type. | ||||||||
712 | const IdentifierInfo *getBaseTypeIdentifier() const; | ||||||||
713 | |||||||||
714 | /// Divides a QualType into its unqualified type and a set of local | ||||||||
715 | /// qualifiers. | ||||||||
716 | SplitQualType split() const; | ||||||||
717 | |||||||||
718 | void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } | ||||||||
719 | |||||||||
720 | static QualType getFromOpaquePtr(const void *Ptr) { | ||||||||
721 | QualType T; | ||||||||
722 | T.Value.setFromOpaqueValue(const_cast<void*>(Ptr)); | ||||||||
723 | return T; | ||||||||
724 | } | ||||||||
725 | |||||||||
726 | const Type &operator*() const { | ||||||||
727 | return *getTypePtr(); | ||||||||
728 | } | ||||||||
729 | |||||||||
730 | const Type *operator->() const { | ||||||||
731 | return getTypePtr(); | ||||||||
732 | } | ||||||||
733 | |||||||||
734 | bool isCanonical() const; | ||||||||
735 | bool isCanonicalAsParam() const; | ||||||||
736 | |||||||||
737 | /// Return true if this QualType doesn't point to a type yet. | ||||||||
738 | bool isNull() const { | ||||||||
739 | return Value.getPointer().isNull(); | ||||||||
740 | } | ||||||||
741 | |||||||||
742 | /// Determine whether this particular QualType instance has the | ||||||||
743 | /// "const" qualifier set, without looking through typedefs that may have | ||||||||
744 | /// added "const" at a different level. | ||||||||
745 | bool isLocalConstQualified() const { | ||||||||
746 | return (getLocalFastQualifiers() & Qualifiers::Const); | ||||||||
747 | } | ||||||||
748 | |||||||||
749 | /// Determine whether this type is const-qualified. | ||||||||
750 | bool isConstQualified() const; | ||||||||
751 | |||||||||
752 | /// Determine whether this particular QualType instance has the | ||||||||
753 | /// "restrict" qualifier set, without looking through typedefs that may have | ||||||||
754 | /// added "restrict" at a different level. | ||||||||
755 | bool isLocalRestrictQualified() const { | ||||||||
756 | return (getLocalFastQualifiers() & Qualifiers::Restrict); | ||||||||
757 | } | ||||||||
758 | |||||||||
759 | /// Determine whether this type is restrict-qualified. | ||||||||
760 | bool isRestrictQualified() const; | ||||||||
761 | |||||||||
762 | /// Determine whether this particular QualType instance has the | ||||||||
763 | /// "volatile" qualifier set, without looking through typedefs that may have | ||||||||
764 | /// added "volatile" at a different level. | ||||||||
765 | bool isLocalVolatileQualified() const { | ||||||||
766 | return (getLocalFastQualifiers() & Qualifiers::Volatile); | ||||||||
767 | } | ||||||||
768 | |||||||||
769 | /// Determine whether this type is volatile-qualified. | ||||||||
770 | bool isVolatileQualified() const; | ||||||||
771 | |||||||||
772 | /// Determine whether this particular QualType instance has any | ||||||||
773 | /// qualifiers, without looking through any typedefs that might add | ||||||||
774 | /// qualifiers at a different level. | ||||||||
775 | bool hasLocalQualifiers() const { | ||||||||
776 | return getLocalFastQualifiers() || hasLocalNonFastQualifiers(); | ||||||||
777 | } | ||||||||
778 | |||||||||
779 | /// Determine whether this type has any qualifiers. | ||||||||
780 | bool hasQualifiers() const; | ||||||||
781 | |||||||||
782 | /// Determine whether this particular QualType instance has any | ||||||||
783 | /// "non-fast" qualifiers, e.g., those that are stored in an ExtQualType | ||||||||
784 | /// instance. | ||||||||
785 | bool hasLocalNonFastQualifiers() const { | ||||||||
786 | return Value.getPointer().is<const ExtQuals*>(); | ||||||||
787 | } | ||||||||
788 | |||||||||
789 | /// Retrieve the set of qualifiers local to this particular QualType | ||||||||
790 | /// instance, not including any qualifiers acquired through typedefs or | ||||||||
791 | /// other sugar. | ||||||||
792 | Qualifiers getLocalQualifiers() const; | ||||||||
793 | |||||||||
794 | /// Retrieve the set of qualifiers applied to this type. | ||||||||
795 | Qualifiers getQualifiers() const; | ||||||||
796 | |||||||||
797 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers | ||||||||
798 | /// local to this particular QualType instance, not including any qualifiers | ||||||||
799 | /// acquired through typedefs or other sugar. | ||||||||
800 | unsigned getLocalCVRQualifiers() const { | ||||||||
801 | return getLocalFastQualifiers(); | ||||||||
802 | } | ||||||||
803 | |||||||||
804 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers | ||||||||
805 | /// applied to this type. | ||||||||
806 | unsigned getCVRQualifiers() const; | ||||||||
807 | |||||||||
808 | bool isConstant(const ASTContext& Ctx) const { | ||||||||
809 | return QualType::isConstant(*this, Ctx); | ||||||||
810 | } | ||||||||
811 | |||||||||
812 | /// Determine whether this is a Plain Old Data (POD) type (C++ 3.9p10). | ||||||||
813 | bool isPODType(const ASTContext &Context) const; | ||||||||
814 | |||||||||
815 | /// Return true if this is a POD type according to the rules of the C++98 | ||||||||
816 | /// standard, regardless of the current compilation's language. | ||||||||
817 | bool isCXX98PODType(const ASTContext &Context) const; | ||||||||
818 | |||||||||
819 | /// Return true if this is a POD type according to the more relaxed rules | ||||||||
820 | /// of the C++11 standard, regardless of the current compilation's language. | ||||||||
821 | /// (C++0x [basic.types]p9). Note that, unlike | ||||||||
822 | /// CXXRecordDecl::isCXX11StandardLayout, this takes DRs into account. | ||||||||
823 | bool isCXX11PODType(const ASTContext &Context) const; | ||||||||
824 | |||||||||
825 | /// Return true if this is a trivial type per (C++0x [basic.types]p9) | ||||||||
826 | bool isTrivialType(const ASTContext &Context) const; | ||||||||
827 | |||||||||
828 | /// Return true if this is a trivially copyable type (C++0x [basic.types]p9) | ||||||||
829 | bool isTriviallyCopyableType(const ASTContext &Context) const; | ||||||||
830 | |||||||||
831 | |||||||||
832 | /// Returns true if it is a class and it might be dynamic. | ||||||||
833 | bool mayBeDynamicClass() const; | ||||||||
834 | |||||||||
835 | /// Returns true if it is not a class or if the class might not be dynamic. | ||||||||
836 | bool mayBeNotDynamicClass() const; | ||||||||
837 | |||||||||
838 | // Don't promise in the API that anything besides 'const' can be | ||||||||
839 | // easily added. | ||||||||
840 | |||||||||
841 | /// Add the `const` type qualifier to this QualType. | ||||||||
842 | void addConst() { | ||||||||
843 | addFastQualifiers(Qualifiers::Const); | ||||||||
844 | } | ||||||||
845 | QualType withConst() const { | ||||||||
846 | return withFastQualifiers(Qualifiers::Const); | ||||||||
847 | } | ||||||||
848 | |||||||||
849 | /// Add the `volatile` type qualifier to this QualType. | ||||||||
850 | void addVolatile() { | ||||||||
851 | addFastQualifiers(Qualifiers::Volatile); | ||||||||
852 | } | ||||||||
853 | QualType withVolatile() const { | ||||||||
854 | return withFastQualifiers(Qualifiers::Volatile); | ||||||||
855 | } | ||||||||
856 | |||||||||
857 | /// Add the `restrict` qualifier to this QualType. | ||||||||
858 | void addRestrict() { | ||||||||
859 | addFastQualifiers(Qualifiers::Restrict); | ||||||||
860 | } | ||||||||
861 | QualType withRestrict() const { | ||||||||
862 | return withFastQualifiers(Qualifiers::Restrict); | ||||||||
863 | } | ||||||||
864 | |||||||||
865 | QualType withCVRQualifiers(unsigned CVR) const { | ||||||||
866 | return withFastQualifiers(CVR); | ||||||||
867 | } | ||||||||
868 | |||||||||
869 | void addFastQualifiers(unsigned TQs) { | ||||||||
870 | assert(!(TQs & ~Qualifiers::FastMask)(static_cast <bool> (!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!") ? void (0 ) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 871, __extension__ __PRETTY_FUNCTION__)) | ||||||||
871 | && "non-fast qualifier bits set in mask!")(static_cast <bool> (!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!") ? void (0 ) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 871, __extension__ __PRETTY_FUNCTION__)); | ||||||||
872 | Value.setInt(Value.getInt() | TQs); | ||||||||
873 | } | ||||||||
874 | |||||||||
875 | void removeLocalConst(); | ||||||||
876 | void removeLocalVolatile(); | ||||||||
877 | void removeLocalRestrict(); | ||||||||
878 | void removeLocalCVRQualifiers(unsigned Mask); | ||||||||
879 | |||||||||
880 | void removeLocalFastQualifiers() { Value.setInt(0); } | ||||||||
881 | void removeLocalFastQualifiers(unsigned Mask) { | ||||||||
882 | assert(!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers")(static_cast <bool> (!(Mask & ~Qualifiers::FastMask ) && "mask has non-fast qualifiers") ? void (0) : __assert_fail ("!(Mask & ~Qualifiers::FastMask) && \"mask has non-fast qualifiers\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 882, __extension__ __PRETTY_FUNCTION__)); | ||||||||
883 | Value.setInt(Value.getInt() & ~Mask); | ||||||||
884 | } | ||||||||
885 | |||||||||
886 | // Creates a type with the given qualifiers in addition to any | ||||||||
887 | // qualifiers already on this type. | ||||||||
888 | QualType withFastQualifiers(unsigned TQs) const { | ||||||||
889 | QualType T = *this; | ||||||||
890 | T.addFastQualifiers(TQs); | ||||||||
891 | return T; | ||||||||
892 | } | ||||||||
893 | |||||||||
894 | // Creates a type with exactly the given fast qualifiers, removing | ||||||||
895 | // any existing fast qualifiers. | ||||||||
896 | QualType withExactLocalFastQualifiers(unsigned TQs) const { | ||||||||
897 | return withoutLocalFastQualifiers().withFastQualifiers(TQs); | ||||||||
898 | } | ||||||||
899 | |||||||||
900 | // Removes fast qualifiers, but leaves any extended qualifiers in place. | ||||||||
901 | QualType withoutLocalFastQualifiers() const { | ||||||||
902 | QualType T = *this; | ||||||||
903 | T.removeLocalFastQualifiers(); | ||||||||
904 | return T; | ||||||||
905 | } | ||||||||
906 | |||||||||
907 | QualType getCanonicalType() const; | ||||||||
908 | |||||||||
909 | /// Return this type with all of the instance-specific qualifiers | ||||||||
910 | /// removed, but without removing any qualifiers that may have been applied | ||||||||
911 | /// through typedefs. | ||||||||
912 | QualType getLocalUnqualifiedType() const { return QualType(getTypePtr(), 0); } | ||||||||
913 | |||||||||
914 | /// Retrieve the unqualified variant of the given type, | ||||||||
915 | /// removing as little sugar as possible. | ||||||||
916 | /// | ||||||||
917 | /// This routine looks through various kinds of sugar to find the | ||||||||
918 | /// least-desugared type that is unqualified. For example, given: | ||||||||
919 | /// | ||||||||
920 | /// \code | ||||||||
921 | /// typedef int Integer; | ||||||||
922 | /// typedef const Integer CInteger; | ||||||||
923 | /// typedef CInteger DifferenceType; | ||||||||
924 | /// \endcode | ||||||||
925 | /// | ||||||||
926 | /// Executing \c getUnqualifiedType() on the type \c DifferenceType will | ||||||||
927 | /// desugar until we hit the type \c Integer, which has no qualifiers on it. | ||||||||
928 | /// | ||||||||
929 | /// The resulting type might still be qualified if it's sugar for an array | ||||||||
930 | /// type. To strip qualifiers even from within a sugared array type, use | ||||||||
931 | /// ASTContext::getUnqualifiedArrayType. | ||||||||
932 | inline QualType getUnqualifiedType() const; | ||||||||
933 | |||||||||
934 | /// Retrieve the unqualified variant of the given type, removing as little | ||||||||
935 | /// sugar as possible. | ||||||||
936 | /// | ||||||||
937 | /// Like getUnqualifiedType(), but also returns the set of | ||||||||
938 | /// qualifiers that were built up. | ||||||||
939 | /// | ||||||||
940 | /// The resulting type might still be qualified if it's sugar for an array | ||||||||
941 | /// type. To strip qualifiers even from within a sugared array type, use | ||||||||
942 | /// ASTContext::getUnqualifiedArrayType. | ||||||||
943 | inline SplitQualType getSplitUnqualifiedType() const; | ||||||||
944 | |||||||||
945 | /// Determine whether this type is more qualified than the other | ||||||||
946 | /// given type, requiring exact equality for non-CVR qualifiers. | ||||||||
947 | bool isMoreQualifiedThan(QualType Other) const; | ||||||||
948 | |||||||||
949 | /// Determine whether this type is at least as qualified as the other | ||||||||
950 | /// given type, requiring exact equality for non-CVR qualifiers. | ||||||||
951 | bool isAtLeastAsQualifiedAs(QualType Other) const; | ||||||||
952 | |||||||||
953 | QualType getNonReferenceType() const; | ||||||||
954 | |||||||||
955 | /// Determine the type of a (typically non-lvalue) expression with the | ||||||||
956 | /// specified result type. | ||||||||
957 | /// | ||||||||
958 | /// This routine should be used for expressions for which the return type is | ||||||||
959 | /// explicitly specified (e.g., in a cast or call) and isn't necessarily | ||||||||
960 | /// an lvalue. It removes a top-level reference (since there are no | ||||||||
961 | /// expressions of reference type) and deletes top-level cvr-qualifiers | ||||||||
962 | /// from non-class types (in C++) or all types (in C). | ||||||||
963 | QualType getNonLValueExprType(const ASTContext &Context) const; | ||||||||
964 | |||||||||
965 | /// Remove an outer pack expansion type (if any) from this type. Used as part | ||||||||
966 | /// of converting the type of a declaration to the type of an expression that | ||||||||
967 | /// references that expression. It's meaningless for an expression to have a | ||||||||
968 | /// pack expansion type. | ||||||||
969 | QualType getNonPackExpansionType() const; | ||||||||
970 | |||||||||
971 | /// Return the specified type with any "sugar" removed from | ||||||||
972 | /// the type. This takes off typedefs, typeof's etc. If the outer level of | ||||||||
973 | /// the type is already concrete, it returns it unmodified. This is similar | ||||||||
974 | /// to getting the canonical type, but it doesn't remove *all* typedefs. For | ||||||||
975 | /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is | ||||||||
976 | /// concrete. | ||||||||
977 | /// | ||||||||
978 | /// Qualifiers are left in place. | ||||||||
979 | QualType getDesugaredType(const ASTContext &Context) const { | ||||||||
980 | return getDesugaredType(*this, Context); | ||||||||
981 | } | ||||||||
982 | |||||||||
983 | SplitQualType getSplitDesugaredType() const { | ||||||||
984 | return getSplitDesugaredType(*this); | ||||||||
985 | } | ||||||||
986 | |||||||||
987 | /// Return the specified type with one level of "sugar" removed from | ||||||||
988 | /// the type. | ||||||||
989 | /// | ||||||||
990 | /// This routine takes off the first typedef, typeof, etc. If the outer level | ||||||||
991 | /// of the type is already concrete, it returns it unmodified. | ||||||||
992 | QualType getSingleStepDesugaredType(const ASTContext &Context) const { | ||||||||
993 | return getSingleStepDesugaredTypeImpl(*this, Context); | ||||||||
994 | } | ||||||||
995 | |||||||||
996 | /// Returns the specified type after dropping any | ||||||||
997 | /// outer-level parentheses. | ||||||||
998 | QualType IgnoreParens() const { | ||||||||
999 | if (isa<ParenType>(*this)) | ||||||||
1000 | return QualType::IgnoreParens(*this); | ||||||||
1001 | return *this; | ||||||||
1002 | } | ||||||||
1003 | |||||||||
1004 | /// Indicate whether the specified types and qualifiers are identical. | ||||||||
1005 | friend bool operator==(const QualType &LHS, const QualType &RHS) { | ||||||||
1006 | return LHS.Value == RHS.Value; | ||||||||
1007 | } | ||||||||
1008 | friend bool operator!=(const QualType &LHS, const QualType &RHS) { | ||||||||
1009 | return LHS.Value != RHS.Value; | ||||||||
1010 | } | ||||||||
1011 | friend bool operator<(const QualType &LHS, const QualType &RHS) { | ||||||||
1012 | return LHS.Value < RHS.Value; | ||||||||
1013 | } | ||||||||
1014 | |||||||||
1015 | static std::string getAsString(SplitQualType split, | ||||||||
1016 | const PrintingPolicy &Policy) { | ||||||||
1017 | return getAsString(split.Ty, split.Quals, Policy); | ||||||||
1018 | } | ||||||||
1019 | static std::string getAsString(const Type *ty, Qualifiers qs, | ||||||||
1020 | const PrintingPolicy &Policy); | ||||||||
1021 | |||||||||
1022 | std::string getAsString() const; | ||||||||
1023 | std::string getAsString(const PrintingPolicy &Policy) const; | ||||||||
1024 | |||||||||
1025 | void print(raw_ostream &OS, const PrintingPolicy &Policy, | ||||||||
1026 | const Twine &PlaceHolder = Twine(), | ||||||||
1027 | unsigned Indentation = 0) const; | ||||||||
1028 | |||||||||
1029 | static void print(SplitQualType split, raw_ostream &OS, | ||||||||
1030 | const PrintingPolicy &policy, const Twine &PlaceHolder, | ||||||||
1031 | unsigned Indentation = 0) { | ||||||||
1032 | return print(split.Ty, split.Quals, OS, policy, PlaceHolder, Indentation); | ||||||||
1033 | } | ||||||||
1034 | |||||||||
1035 | static void print(const Type *ty, Qualifiers qs, | ||||||||
1036 | raw_ostream &OS, const PrintingPolicy &policy, | ||||||||
1037 | const Twine &PlaceHolder, | ||||||||
1038 | unsigned Indentation = 0); | ||||||||
1039 | |||||||||
1040 | void getAsStringInternal(std::string &Str, | ||||||||
1041 | const PrintingPolicy &Policy) const; | ||||||||
1042 | |||||||||
1043 | static void getAsStringInternal(SplitQualType split, std::string &out, | ||||||||
1044 | const PrintingPolicy &policy) { | ||||||||
1045 | return getAsStringInternal(split.Ty, split.Quals, out, policy); | ||||||||
1046 | } | ||||||||
1047 | |||||||||
1048 | static void getAsStringInternal(const Type *ty, Qualifiers qs, | ||||||||
1049 | std::string &out, | ||||||||
1050 | const PrintingPolicy &policy); | ||||||||
1051 | |||||||||
1052 | class StreamedQualTypeHelper { | ||||||||
1053 | const QualType &T; | ||||||||
1054 | const PrintingPolicy &Policy; | ||||||||
1055 | const Twine &PlaceHolder; | ||||||||
1056 | unsigned Indentation; | ||||||||
1057 | |||||||||
1058 | public: | ||||||||
1059 | StreamedQualTypeHelper(const QualType &T, const PrintingPolicy &Policy, | ||||||||
1060 | const Twine &PlaceHolder, unsigned Indentation) | ||||||||
1061 | : T(T), Policy(Policy), PlaceHolder(PlaceHolder), | ||||||||
1062 | Indentation(Indentation) {} | ||||||||
1063 | |||||||||
1064 | friend raw_ostream &operator<<(raw_ostream &OS, | ||||||||
1065 | const StreamedQualTypeHelper &SQT) { | ||||||||
1066 | SQT.T.print(OS, SQT.Policy, SQT.PlaceHolder, SQT.Indentation); | ||||||||
1067 | return OS; | ||||||||
1068 | } | ||||||||
1069 | }; | ||||||||
1070 | |||||||||
1071 | StreamedQualTypeHelper stream(const PrintingPolicy &Policy, | ||||||||
1072 | const Twine &PlaceHolder = Twine(), | ||||||||
1073 | unsigned Indentation = 0) const { | ||||||||
1074 | return StreamedQualTypeHelper(*this, Policy, PlaceHolder, Indentation); | ||||||||
1075 | } | ||||||||
1076 | |||||||||
1077 | void dump(const char *s) const; | ||||||||
1078 | void dump() const; | ||||||||
1079 | void dump(llvm::raw_ostream &OS, const ASTContext &Context) const; | ||||||||
1080 | |||||||||
1081 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
1082 | ID.AddPointer(getAsOpaquePtr()); | ||||||||
1083 | } | ||||||||
1084 | |||||||||
1085 | /// Check if this type has any address space qualifier. | ||||||||
1086 | inline bool hasAddressSpace() const; | ||||||||
1087 | |||||||||
1088 | /// Return the address space of this type. | ||||||||
1089 | inline LangAS getAddressSpace() const; | ||||||||
1090 | |||||||||
1091 | /// Returns true if address space qualifiers overlap with T address space | ||||||||
1092 | /// qualifiers. | ||||||||
1093 | /// OpenCL C defines conversion rules for pointers to different address spaces | ||||||||
1094 | /// and notion of overlapping address spaces. | ||||||||
1095 | /// CL1.1 or CL1.2: | ||||||||
1096 | /// address spaces overlap iff they are they same. | ||||||||
1097 | /// OpenCL C v2.0 s6.5.5 adds: | ||||||||
1098 | /// __generic overlaps with any address space except for __constant. | ||||||||
1099 | bool isAddressSpaceOverlapping(QualType T) const { | ||||||||
1100 | Qualifiers Q = getQualifiers(); | ||||||||
1101 | Qualifiers TQ = T.getQualifiers(); | ||||||||
1102 | // Address spaces overlap if at least one of them is a superset of another | ||||||||
1103 | return Q.isAddressSpaceSupersetOf(TQ) || TQ.isAddressSpaceSupersetOf(Q); | ||||||||
1104 | } | ||||||||
1105 | |||||||||
1106 | /// Returns gc attribute of this type. | ||||||||
1107 | inline Qualifiers::GC getObjCGCAttr() const; | ||||||||
1108 | |||||||||
1109 | /// true when Type is objc's weak. | ||||||||
1110 | bool isObjCGCWeak() const { | ||||||||
1111 | return getObjCGCAttr() == Qualifiers::Weak; | ||||||||
1112 | } | ||||||||
1113 | |||||||||
1114 | /// true when Type is objc's strong. | ||||||||
1115 | bool isObjCGCStrong() const { | ||||||||
1116 | return getObjCGCAttr() == Qualifiers::Strong; | ||||||||
1117 | } | ||||||||
1118 | |||||||||
1119 | /// Returns lifetime attribute of this type. | ||||||||
1120 | Qualifiers::ObjCLifetime getObjCLifetime() const { | ||||||||
1121 | return getQualifiers().getObjCLifetime(); | ||||||||
1122 | } | ||||||||
1123 | |||||||||
1124 | bool hasNonTrivialObjCLifetime() const { | ||||||||
1125 | return getQualifiers().hasNonTrivialObjCLifetime(); | ||||||||
1126 | } | ||||||||
1127 | |||||||||
1128 | bool hasStrongOrWeakObjCLifetime() const { | ||||||||
1129 | return getQualifiers().hasStrongOrWeakObjCLifetime(); | ||||||||
1130 | } | ||||||||
1131 | |||||||||
1132 | // true when Type is objc's weak and weak is enabled but ARC isn't. | ||||||||
1133 | bool isNonWeakInMRRWithObjCWeak(const ASTContext &Context) const; | ||||||||
1134 | |||||||||
1135 | enum PrimitiveDefaultInitializeKind { | ||||||||
1136 | /// The type does not fall into any of the following categories. Note that | ||||||||
1137 | /// this case is zero-valued so that values of this enum can be used as a | ||||||||
1138 | /// boolean condition for non-triviality. | ||||||||
1139 | PDIK_Trivial, | ||||||||
1140 | |||||||||
1141 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
1142 | /// with the ARC __strong qualifier. | ||||||||
1143 | PDIK_ARCStrong, | ||||||||
1144 | |||||||||
1145 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
1146 | /// with the ARC __weak qualifier. | ||||||||
1147 | PDIK_ARCWeak, | ||||||||
1148 | |||||||||
1149 | /// The type is a struct containing a field whose type is not PCK_Trivial. | ||||||||
1150 | PDIK_Struct | ||||||||
1151 | }; | ||||||||
1152 | |||||||||
1153 | /// Functions to query basic properties of non-trivial C struct types. | ||||||||
1154 | |||||||||
1155 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||
1156 | /// transitively containing this type to be non-trivial to default initialize | ||||||||
1157 | /// and return the kind. | ||||||||
1158 | PrimitiveDefaultInitializeKind | ||||||||
1159 | isNonTrivialToPrimitiveDefaultInitialize() const; | ||||||||
1160 | |||||||||
1161 | enum PrimitiveCopyKind { | ||||||||
1162 | /// The type does not fall into any of the following categories. Note that | ||||||||
1163 | /// this case is zero-valued so that values of this enum can be used as a | ||||||||
1164 | /// boolean condition for non-triviality. | ||||||||
1165 | PCK_Trivial, | ||||||||
1166 | |||||||||
1167 | /// The type would be trivial except that it is volatile-qualified. Types | ||||||||
1168 | /// that fall into one of the other non-trivial cases may additionally be | ||||||||
1169 | /// volatile-qualified. | ||||||||
1170 | PCK_VolatileTrivial, | ||||||||
1171 | |||||||||
1172 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
1173 | /// with the ARC __strong qualifier. | ||||||||
1174 | PCK_ARCStrong, | ||||||||
1175 | |||||||||
1176 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
1177 | /// with the ARC __weak qualifier. | ||||||||
1178 | PCK_ARCWeak, | ||||||||
1179 | |||||||||
1180 | /// The type is a struct containing a field whose type is neither | ||||||||
1181 | /// PCK_Trivial nor PCK_VolatileTrivial. | ||||||||
1182 | /// Note that a C++ struct type does not necessarily match this; C++ copying | ||||||||
1183 | /// semantics are too complex to express here, in part because they depend | ||||||||
1184 | /// on the exact constructor or assignment operator that is chosen by | ||||||||
1185 | /// overload resolution to do the copy. | ||||||||
1186 | PCK_Struct | ||||||||
1187 | }; | ||||||||
1188 | |||||||||
1189 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||
1190 | /// transitively containing this type to be non-trivial to copy and return the | ||||||||
1191 | /// kind. | ||||||||
1192 | PrimitiveCopyKind isNonTrivialToPrimitiveCopy() const; | ||||||||
1193 | |||||||||
1194 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||
1195 | /// transitively containing this type to be non-trivial to destructively | ||||||||
1196 | /// move and return the kind. Destructive move in this context is a C++-style | ||||||||
1197 | /// move in which the source object is placed in a valid but unspecified state | ||||||||
1198 | /// after it is moved, as opposed to a truly destructive move in which the | ||||||||
1199 | /// source object is placed in an uninitialized state. | ||||||||
1200 | PrimitiveCopyKind isNonTrivialToPrimitiveDestructiveMove() const; | ||||||||
1201 | |||||||||
1202 | enum DestructionKind { | ||||||||
1203 | DK_none, | ||||||||
1204 | DK_cxx_destructor, | ||||||||
1205 | DK_objc_strong_lifetime, | ||||||||
1206 | DK_objc_weak_lifetime, | ||||||||
1207 | DK_nontrivial_c_struct | ||||||||
1208 | }; | ||||||||
1209 | |||||||||
1210 | /// Returns a nonzero value if objects of this type require | ||||||||
1211 | /// non-trivial work to clean up after. Non-zero because it's | ||||||||
1212 | /// conceivable that qualifiers (objc_gc(weak)?) could make | ||||||||
1213 | /// something require destruction. | ||||||||
1214 | DestructionKind isDestructedType() const { | ||||||||
1215 | return isDestructedTypeImpl(*this); | ||||||||
1216 | } | ||||||||
1217 | |||||||||
1218 | /// Check if this is or contains a C union that is non-trivial to | ||||||||
1219 | /// default-initialize, which is a union that has a member that is non-trivial | ||||||||
1220 | /// to default-initialize. If this returns true, | ||||||||
1221 | /// isNonTrivialToPrimitiveDefaultInitialize returns PDIK_Struct. | ||||||||
1222 | bool hasNonTrivialToPrimitiveDefaultInitializeCUnion() const; | ||||||||
1223 | |||||||||
1224 | /// Check if this is or contains a C union that is non-trivial to destruct, | ||||||||
1225 | /// which is a union that has a member that is non-trivial to destruct. If | ||||||||
1226 | /// this returns true, isDestructedType returns DK_nontrivial_c_struct. | ||||||||
1227 | bool hasNonTrivialToPrimitiveDestructCUnion() const; | ||||||||
1228 | |||||||||
1229 | /// Check if this is or contains a C union that is non-trivial to copy, which | ||||||||
1230 | /// is a union that has a member that is non-trivial to copy. If this returns | ||||||||
1231 | /// true, isNonTrivialToPrimitiveCopy returns PCK_Struct. | ||||||||
1232 | bool hasNonTrivialToPrimitiveCopyCUnion() const; | ||||||||
1233 | |||||||||
1234 | /// Determine whether expressions of the given type are forbidden | ||||||||
1235 | /// from being lvalues in C. | ||||||||
1236 | /// | ||||||||
1237 | /// The expression types that are forbidden to be lvalues are: | ||||||||
1238 | /// - 'void', but not qualified void | ||||||||
1239 | /// - function types | ||||||||
1240 | /// | ||||||||
1241 | /// The exact rule here is C99 6.3.2.1: | ||||||||
1242 | /// An lvalue is an expression with an object type or an incomplete | ||||||||
1243 | /// type other than void. | ||||||||
1244 | bool isCForbiddenLValueType() const; | ||||||||
1245 | |||||||||
1246 | /// Substitute type arguments for the Objective-C type parameters used in the | ||||||||
1247 | /// subject type. | ||||||||
1248 | /// | ||||||||
1249 | /// \param ctx ASTContext in which the type exists. | ||||||||
1250 | /// | ||||||||
1251 | /// \param typeArgs The type arguments that will be substituted for the | ||||||||
1252 | /// Objective-C type parameters in the subject type, which are generally | ||||||||
1253 | /// computed via \c Type::getObjCSubstitutions. If empty, the type | ||||||||
1254 | /// parameters will be replaced with their bounds or id/Class, as appropriate | ||||||||
1255 | /// for the context. | ||||||||
1256 | /// | ||||||||
1257 | /// \param context The context in which the subject type was written. | ||||||||
1258 | /// | ||||||||
1259 | /// \returns the resulting type. | ||||||||
1260 | QualType substObjCTypeArgs(ASTContext &ctx, | ||||||||
1261 | ArrayRef<QualType> typeArgs, | ||||||||
1262 | ObjCSubstitutionContext context) const; | ||||||||
1263 | |||||||||
1264 | /// Substitute type arguments from an object type for the Objective-C type | ||||||||
1265 | /// parameters used in the subject type. | ||||||||
1266 | /// | ||||||||
1267 | /// This operation combines the computation of type arguments for | ||||||||
1268 | /// substitution (\c Type::getObjCSubstitutions) with the actual process of | ||||||||
1269 | /// substitution (\c QualType::substObjCTypeArgs) for the convenience of | ||||||||
1270 | /// callers that need to perform a single substitution in isolation. | ||||||||
1271 | /// | ||||||||
1272 | /// \param objectType The type of the object whose member type we're | ||||||||
1273 | /// substituting into. For example, this might be the receiver of a message | ||||||||
1274 | /// or the base of a property access. | ||||||||
1275 | /// | ||||||||
1276 | /// \param dc The declaration context from which the subject type was | ||||||||
1277 | /// retrieved, which indicates (for example) which type parameters should | ||||||||
1278 | /// be substituted. | ||||||||
1279 | /// | ||||||||
1280 | /// \param context The context in which the subject type was written. | ||||||||
1281 | /// | ||||||||
1282 | /// \returns the subject type after replacing all of the Objective-C type | ||||||||
1283 | /// parameters with their corresponding arguments. | ||||||||
1284 | QualType substObjCMemberType(QualType objectType, | ||||||||
1285 | const DeclContext *dc, | ||||||||
1286 | ObjCSubstitutionContext context) const; | ||||||||
1287 | |||||||||
1288 | /// Strip Objective-C "__kindof" types from the given type. | ||||||||
1289 | QualType stripObjCKindOfType(const ASTContext &ctx) const; | ||||||||
1290 | |||||||||
1291 | /// Remove all qualifiers including _Atomic. | ||||||||
1292 | QualType getAtomicUnqualifiedType() const; | ||||||||
1293 | |||||||||
1294 | private: | ||||||||
1295 | // These methods are implemented in a separate translation unit; | ||||||||
1296 | // "static"-ize them to avoid creating temporary QualTypes in the | ||||||||
1297 | // caller. | ||||||||
1298 | static bool isConstant(QualType T, const ASTContext& Ctx); | ||||||||
1299 | static QualType getDesugaredType(QualType T, const ASTContext &Context); | ||||||||
1300 | static SplitQualType getSplitDesugaredType(QualType T); | ||||||||
1301 | static SplitQualType getSplitUnqualifiedTypeImpl(QualType type); | ||||||||
1302 | static QualType getSingleStepDesugaredTypeImpl(QualType type, | ||||||||
1303 | const ASTContext &C); | ||||||||
1304 | static QualType IgnoreParens(QualType T); | ||||||||
1305 | static DestructionKind isDestructedTypeImpl(QualType type); | ||||||||
1306 | |||||||||
1307 | /// Check if \param RD is or contains a non-trivial C union. | ||||||||
1308 | static bool hasNonTrivialToPrimitiveDefaultInitializeCUnion(const RecordDecl *RD); | ||||||||
1309 | static bool hasNonTrivialToPrimitiveDestructCUnion(const RecordDecl *RD); | ||||||||
1310 | static bool hasNonTrivialToPrimitiveCopyCUnion(const RecordDecl *RD); | ||||||||
1311 | }; | ||||||||
1312 | |||||||||
1313 | } // namespace clang | ||||||||
1314 | |||||||||
1315 | namespace llvm { | ||||||||
1316 | |||||||||
1317 | /// Implement simplify_type for QualType, so that we can dyn_cast from QualType | ||||||||
1318 | /// to a specific Type class. | ||||||||
1319 | template<> struct simplify_type< ::clang::QualType> { | ||||||||
1320 | using SimpleType = const ::clang::Type *; | ||||||||
1321 | |||||||||
1322 | static SimpleType getSimplifiedValue(::clang::QualType Val) { | ||||||||
1323 | return Val.getTypePtr(); | ||||||||
1324 | } | ||||||||
1325 | }; | ||||||||
1326 | |||||||||
1327 | // Teach SmallPtrSet that QualType is "basically a pointer". | ||||||||
1328 | template<> | ||||||||
1329 | struct PointerLikeTypeTraits<clang::QualType> { | ||||||||
1330 | static inline void *getAsVoidPointer(clang::QualType P) { | ||||||||
1331 | return P.getAsOpaquePtr(); | ||||||||
1332 | } | ||||||||
1333 | |||||||||
1334 | static inline clang::QualType getFromVoidPointer(void *P) { | ||||||||
1335 | return clang::QualType::getFromOpaquePtr(P); | ||||||||
1336 | } | ||||||||
1337 | |||||||||
1338 | // Various qualifiers go in low bits. | ||||||||
1339 | static constexpr int NumLowBitsAvailable = 0; | ||||||||
1340 | }; | ||||||||
1341 | |||||||||
1342 | } // namespace llvm | ||||||||
1343 | |||||||||
1344 | namespace clang { | ||||||||
1345 | |||||||||
1346 | /// Base class that is common to both the \c ExtQuals and \c Type | ||||||||
1347 | /// classes, which allows \c QualType to access the common fields between the | ||||||||
1348 | /// two. | ||||||||
1349 | class ExtQualsTypeCommonBase { | ||||||||
1350 | friend class ExtQuals; | ||||||||
1351 | friend class QualType; | ||||||||
1352 | friend class Type; | ||||||||
1353 | |||||||||
1354 | /// The "base" type of an extended qualifiers type (\c ExtQuals) or | ||||||||
1355 | /// a self-referential pointer (for \c Type). | ||||||||
1356 | /// | ||||||||
1357 | /// This pointer allows an efficient mapping from a QualType to its | ||||||||
1358 | /// underlying type pointer. | ||||||||
1359 | const Type *const BaseType; | ||||||||
1360 | |||||||||
1361 | /// The canonical type of this type. A QualType. | ||||||||
1362 | QualType CanonicalType; | ||||||||
1363 | |||||||||
1364 | ExtQualsTypeCommonBase(const Type *baseType, QualType canon) | ||||||||
1365 | : BaseType(baseType), CanonicalType(canon) {} | ||||||||
1366 | }; | ||||||||
1367 | |||||||||
1368 | /// We can encode up to four bits in the low bits of a | ||||||||
1369 | /// type pointer, but there are many more type qualifiers that we want | ||||||||
1370 | /// to be able to apply to an arbitrary type. Therefore we have this | ||||||||
1371 | /// struct, intended to be heap-allocated and used by QualType to | ||||||||
1372 | /// store qualifiers. | ||||||||
1373 | /// | ||||||||
1374 | /// The current design tags the 'const', 'restrict', and 'volatile' qualifiers | ||||||||
1375 | /// in three low bits on the QualType pointer; a fourth bit records whether | ||||||||
1376 | /// the pointer is an ExtQuals node. The extended qualifiers (address spaces, | ||||||||
1377 | /// Objective-C GC attributes) are much more rare. | ||||||||
1378 | class ExtQuals : public ExtQualsTypeCommonBase, public llvm::FoldingSetNode { | ||||||||
1379 | // NOTE: changing the fast qualifiers should be straightforward as | ||||||||
1380 | // long as you don't make 'const' non-fast. | ||||||||
1381 | // 1. Qualifiers: | ||||||||
1382 | // a) Modify the bitmasks (Qualifiers::TQ and DeclSpec::TQ). | ||||||||
1383 | // Fast qualifiers must occupy the low-order bits. | ||||||||
1384 | // b) Update Qualifiers::FastWidth and FastMask. | ||||||||
1385 | // 2. QualType: | ||||||||
1386 | // a) Update is{Volatile,Restrict}Qualified(), defined inline. | ||||||||
1387 | // b) Update remove{Volatile,Restrict}, defined near the end of | ||||||||
1388 | // this header. | ||||||||
1389 | // 3. ASTContext: | ||||||||
1390 | // a) Update get{Volatile,Restrict}Type. | ||||||||
1391 | |||||||||
1392 | /// The immutable set of qualifiers applied by this node. Always contains | ||||||||
1393 | /// extended qualifiers. | ||||||||
1394 | Qualifiers Quals; | ||||||||
1395 | |||||||||
1396 | ExtQuals *this_() { return this; } | ||||||||
1397 | |||||||||
1398 | public: | ||||||||
1399 | ExtQuals(const Type *baseType, QualType canon, Qualifiers quals) | ||||||||
1400 | : ExtQualsTypeCommonBase(baseType, | ||||||||
1401 | canon.isNull() ? QualType(this_(), 0) : canon), | ||||||||
1402 | Quals(quals) { | ||||||||
1403 | assert(Quals.hasNonFastQualifiers()(static_cast <bool> (Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers") ? void (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1404, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1404 | && "ExtQuals created with no fast qualifiers")(static_cast <bool> (Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers") ? void (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1404, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1405 | assert(!Quals.hasFastQualifiers()(static_cast <bool> (!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers") ? void (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1406, __extension__ __PRETTY_FUNCTION__)) | ||||||||
1406 | && "ExtQuals created with fast qualifiers")(static_cast <bool> (!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers") ? void (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1406, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1407 | } | ||||||||
1408 | |||||||||
1409 | Qualifiers getQualifiers() const { return Quals; } | ||||||||
1410 | |||||||||
1411 | bool hasObjCGCAttr() const { return Quals.hasObjCGCAttr(); } | ||||||||
1412 | Qualifiers::GC getObjCGCAttr() const { return Quals.getObjCGCAttr(); } | ||||||||
1413 | |||||||||
1414 | bool hasObjCLifetime() const { return Quals.hasObjCLifetime(); } | ||||||||
1415 | Qualifiers::ObjCLifetime getObjCLifetime() const { | ||||||||
1416 | return Quals.getObjCLifetime(); | ||||||||
1417 | } | ||||||||
1418 | |||||||||
1419 | bool hasAddressSpace() const { return Quals.hasAddressSpace(); } | ||||||||
1420 | LangAS getAddressSpace() const { return Quals.getAddressSpace(); } | ||||||||
1421 | |||||||||
1422 | const Type *getBaseType() const { return BaseType; } | ||||||||
1423 | |||||||||
1424 | public: | ||||||||
1425 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
1426 | Profile(ID, getBaseType(), Quals); | ||||||||
1427 | } | ||||||||
1428 | |||||||||
1429 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
1430 | const Type *BaseType, | ||||||||
1431 | Qualifiers Quals) { | ||||||||
1432 | assert(!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!")(static_cast <bool> (!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!") ? void (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"fast qualifiers in ExtQuals hash!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1432, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1433 | ID.AddPointer(BaseType); | ||||||||
1434 | Quals.Profile(ID); | ||||||||
1435 | } | ||||||||
1436 | }; | ||||||||
1437 | |||||||||
1438 | /// The kind of C++11 ref-qualifier associated with a function type. | ||||||||
1439 | /// This determines whether a member function's "this" object can be an | ||||||||
1440 | /// lvalue, rvalue, or neither. | ||||||||
1441 | enum RefQualifierKind { | ||||||||
1442 | /// No ref-qualifier was provided. | ||||||||
1443 | RQ_None = 0, | ||||||||
1444 | |||||||||
1445 | /// An lvalue ref-qualifier was provided (\c &). | ||||||||
1446 | RQ_LValue, | ||||||||
1447 | |||||||||
1448 | /// An rvalue ref-qualifier was provided (\c &&). | ||||||||
1449 | RQ_RValue | ||||||||
1450 | }; | ||||||||
1451 | |||||||||
1452 | /// Which keyword(s) were used to create an AutoType. | ||||||||
1453 | enum class AutoTypeKeyword { | ||||||||
1454 | /// auto | ||||||||
1455 | Auto, | ||||||||
1456 | |||||||||
1457 | /// decltype(auto) | ||||||||
1458 | DecltypeAuto, | ||||||||
1459 | |||||||||
1460 | /// __auto_type (GNU extension) | ||||||||
1461 | GNUAutoType | ||||||||
1462 | }; | ||||||||
1463 | |||||||||
1464 | /// The base class of the type hierarchy. | ||||||||
1465 | /// | ||||||||
1466 | /// A central concept with types is that each type always has a canonical | ||||||||
1467 | /// type. A canonical type is the type with any typedef names stripped out | ||||||||
1468 | /// of it or the types it references. For example, consider: | ||||||||
1469 | /// | ||||||||
1470 | /// typedef int foo; | ||||||||
1471 | /// typedef foo* bar; | ||||||||
1472 | /// 'int *' 'foo *' 'bar' | ||||||||
1473 | /// | ||||||||
1474 | /// There will be a Type object created for 'int'. Since int is canonical, its | ||||||||
1475 | /// CanonicalType pointer points to itself. There is also a Type for 'foo' (a | ||||||||
1476 | /// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next | ||||||||
1477 | /// there is a PointerType that represents 'int*', which, like 'int', is | ||||||||
1478 | /// canonical. Finally, there is a PointerType type for 'foo*' whose canonical | ||||||||
1479 | /// type is 'int*', and there is a TypedefType for 'bar', whose canonical type | ||||||||
1480 | /// is also 'int*'. | ||||||||
1481 | /// | ||||||||
1482 | /// Non-canonical types are useful for emitting diagnostics, without losing | ||||||||
1483 | /// information about typedefs being used. Canonical types are useful for type | ||||||||
1484 | /// comparisons (they allow by-pointer equality tests) and useful for reasoning | ||||||||
1485 | /// about whether something has a particular form (e.g. is a function type), | ||||||||
1486 | /// because they implicitly, recursively, strip all typedefs out of a type. | ||||||||
1487 | /// | ||||||||
1488 | /// Types, once created, are immutable. | ||||||||
1489 | /// | ||||||||
1490 | class alignas(8) Type : public ExtQualsTypeCommonBase { | ||||||||
1491 | public: | ||||||||
1492 | enum TypeClass { | ||||||||
1493 | #define TYPE(Class, Base) Class, | ||||||||
1494 | #define LAST_TYPE(Class) TypeLast = Class | ||||||||
1495 | #define ABSTRACT_TYPE(Class, Base) | ||||||||
1496 | #include "clang/AST/TypeNodes.inc" | ||||||||
1497 | }; | ||||||||
1498 | |||||||||
1499 | private: | ||||||||
1500 | /// Bitfields required by the Type class. | ||||||||
1501 | class TypeBitfields { | ||||||||
1502 | friend class Type; | ||||||||
1503 | template <class T> friend class TypePropertyCache; | ||||||||
1504 | |||||||||
1505 | /// TypeClass bitfield - Enum that specifies what subclass this belongs to. | ||||||||
1506 | unsigned TC : 8; | ||||||||
1507 | |||||||||
1508 | /// Store information on the type dependency. | ||||||||
1509 | unsigned Dependence : llvm::BitWidth<TypeDependence>; | ||||||||
1510 | |||||||||
1511 | /// True if the cache (i.e. the bitfields here starting with | ||||||||
1512 | /// 'Cache') is valid. | ||||||||
1513 | mutable unsigned CacheValid : 1; | ||||||||
1514 | |||||||||
1515 | /// Linkage of this type. | ||||||||
1516 | mutable unsigned CachedLinkage : 3; | ||||||||
1517 | |||||||||
1518 | /// Whether this type involves and local or unnamed types. | ||||||||
1519 | mutable unsigned CachedLocalOrUnnamed : 1; | ||||||||
1520 | |||||||||
1521 | /// Whether this type comes from an AST file. | ||||||||
1522 | mutable unsigned FromAST : 1; | ||||||||
1523 | |||||||||
1524 | bool isCacheValid() const { | ||||||||
1525 | return CacheValid; | ||||||||
1526 | } | ||||||||
1527 | |||||||||
1528 | Linkage getLinkage() const { | ||||||||
1529 | assert(isCacheValid() && "getting linkage from invalid cache")(static_cast <bool> (isCacheValid() && "getting linkage from invalid cache" ) ? void (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1529, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1530 | return static_cast<Linkage>(CachedLinkage); | ||||||||
1531 | } | ||||||||
1532 | |||||||||
1533 | bool hasLocalOrUnnamedType() const { | ||||||||
1534 | assert(isCacheValid() && "getting linkage from invalid cache")(static_cast <bool> (isCacheValid() && "getting linkage from invalid cache" ) ? void (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 1534, __extension__ __PRETTY_FUNCTION__)); | ||||||||
1535 | return CachedLocalOrUnnamed; | ||||||||
1536 | } | ||||||||
1537 | }; | ||||||||
1538 | enum { NumTypeBits = 8 + llvm::BitWidth<TypeDependence> + 6 }; | ||||||||
1539 | |||||||||
1540 | protected: | ||||||||
1541 | // These classes allow subclasses to somewhat cleanly pack bitfields | ||||||||
1542 | // into Type. | ||||||||
1543 | |||||||||
1544 | class ArrayTypeBitfields { | ||||||||
1545 | friend class ArrayType; | ||||||||
1546 | |||||||||
1547 | unsigned : NumTypeBits; | ||||||||
1548 | |||||||||
1549 | /// CVR qualifiers from declarations like | ||||||||
1550 | /// 'int X[static restrict 4]'. For function parameters only. | ||||||||
1551 | unsigned IndexTypeQuals : 3; | ||||||||
1552 | |||||||||
1553 | /// Storage class qualifiers from declarations like | ||||||||
1554 | /// 'int X[static restrict 4]'. For function parameters only. | ||||||||
1555 | /// Actually an ArrayType::ArraySizeModifier. | ||||||||
1556 | unsigned SizeModifier : 3; | ||||||||
1557 | }; | ||||||||
1558 | |||||||||
1559 | class ConstantArrayTypeBitfields { | ||||||||
1560 | friend class ConstantArrayType; | ||||||||
1561 | |||||||||
1562 | unsigned : NumTypeBits + 3 + 3; | ||||||||
1563 | |||||||||
1564 | /// Whether we have a stored size expression. | ||||||||
1565 | unsigned HasStoredSizeExpr : 1; | ||||||||
1566 | }; | ||||||||
1567 | |||||||||
1568 | class BuiltinTypeBitfields { | ||||||||
1569 | friend class BuiltinType; | ||||||||
1570 | |||||||||
1571 | unsigned : NumTypeBits; | ||||||||
1572 | |||||||||
1573 | /// The kind (BuiltinType::Kind) of builtin type this is. | ||||||||
1574 | unsigned Kind : 8; | ||||||||
1575 | }; | ||||||||
1576 | |||||||||
1577 | /// FunctionTypeBitfields store various bits belonging to FunctionProtoType. | ||||||||
1578 | /// Only common bits are stored here. Additional uncommon bits are stored | ||||||||
1579 | /// in a trailing object after FunctionProtoType. | ||||||||
1580 | class FunctionTypeBitfields { | ||||||||
1581 | friend class FunctionProtoType; | ||||||||
1582 | friend class FunctionType; | ||||||||
1583 | |||||||||
1584 | unsigned : NumTypeBits; | ||||||||
1585 | |||||||||
1586 | /// Extra information which affects how the function is called, like | ||||||||
1587 | /// regparm and the calling convention. | ||||||||
1588 | unsigned ExtInfo : 13; | ||||||||
1589 | |||||||||
1590 | /// The ref-qualifier associated with a \c FunctionProtoType. | ||||||||
1591 | /// | ||||||||
1592 | /// This is a value of type \c RefQualifierKind. | ||||||||
1593 | unsigned RefQualifier : 2; | ||||||||
1594 | |||||||||
1595 | /// Used only by FunctionProtoType, put here to pack with the | ||||||||
1596 | /// other bitfields. | ||||||||
1597 | /// The qualifiers are part of FunctionProtoType because... | ||||||||
1598 | /// | ||||||||
1599 | /// C++ 8.3.5p4: The return type, the parameter type list and the | ||||||||
1600 | /// cv-qualifier-seq, [...], are part of the function type. | ||||||||
1601 | unsigned FastTypeQuals : Qualifiers::FastWidth; | ||||||||
1602 | /// Whether this function has extended Qualifiers. | ||||||||
1603 | unsigned HasExtQuals : 1; | ||||||||
1604 | |||||||||
1605 | /// The number of parameters this function has, not counting '...'. | ||||||||
1606 | /// According to [implimits] 8 bits should be enough here but this is | ||||||||
1607 | /// somewhat easy to exceed with metaprogramming and so we would like to | ||||||||
1608 | /// keep NumParams as wide as reasonably possible. | ||||||||
1609 | unsigned NumParams : 16; | ||||||||
1610 | |||||||||
1611 | /// The type of exception specification this function has. | ||||||||
1612 | unsigned ExceptionSpecType : 4; | ||||||||
1613 | |||||||||
1614 | /// Whether this function has extended parameter information. | ||||||||
1615 | unsigned HasExtParameterInfos : 1; | ||||||||
1616 | |||||||||
1617 | /// Whether the function is variadic. | ||||||||
1618 | unsigned Variadic : 1; | ||||||||
1619 | |||||||||
1620 | /// Whether this function has a trailing return type. | ||||||||
1621 | unsigned HasTrailingReturn : 1; | ||||||||
1622 | }; | ||||||||
1623 | |||||||||
1624 | class ObjCObjectTypeBitfields { | ||||||||
1625 | friend class ObjCObjectType; | ||||||||
1626 | |||||||||
1627 | unsigned : NumTypeBits; | ||||||||
1628 | |||||||||
1629 | /// The number of type arguments stored directly on this object type. | ||||||||
1630 | unsigned NumTypeArgs : 7; | ||||||||
1631 | |||||||||
1632 | /// The number of protocols stored directly on this object type. | ||||||||
1633 | unsigned NumProtocols : 6; | ||||||||
1634 | |||||||||
1635 | /// Whether this is a "kindof" type. | ||||||||
1636 | unsigned IsKindOf : 1; | ||||||||
1637 | }; | ||||||||
1638 | |||||||||
1639 | class ReferenceTypeBitfields { | ||||||||
1640 | friend class ReferenceType; | ||||||||
1641 | |||||||||
1642 | unsigned : NumTypeBits; | ||||||||
1643 | |||||||||
1644 | /// True if the type was originally spelled with an lvalue sigil. | ||||||||
1645 | /// This is never true of rvalue references but can also be false | ||||||||
1646 | /// on lvalue references because of C++0x [dcl.typedef]p9, | ||||||||
1647 | /// as follows: | ||||||||
1648 | /// | ||||||||
1649 | /// typedef int &ref; // lvalue, spelled lvalue | ||||||||
1650 | /// typedef int &&rvref; // rvalue | ||||||||
1651 | /// ref &a; // lvalue, inner ref, spelled lvalue | ||||||||
1652 | /// ref &&a; // lvalue, inner ref | ||||||||
1653 | /// rvref &a; // lvalue, inner ref, spelled lvalue | ||||||||
1654 | /// rvref &&a; // rvalue, inner ref | ||||||||
1655 | unsigned SpelledAsLValue : 1; | ||||||||
1656 | |||||||||
1657 | /// True if the inner type is a reference type. This only happens | ||||||||
1658 | /// in non-canonical forms. | ||||||||
1659 | unsigned InnerRef : 1; | ||||||||
1660 | }; | ||||||||
1661 | |||||||||
1662 | class TypeWithKeywordBitfields { | ||||||||
1663 | friend class TypeWithKeyword; | ||||||||
1664 | |||||||||
1665 | unsigned : NumTypeBits; | ||||||||
1666 | |||||||||
1667 | /// An ElaboratedTypeKeyword. 8 bits for efficient access. | ||||||||
1668 | unsigned Keyword : 8; | ||||||||
1669 | }; | ||||||||
1670 | |||||||||
1671 | enum { NumTypeWithKeywordBits = 8 }; | ||||||||
1672 | |||||||||
1673 | class ElaboratedTypeBitfields { | ||||||||
1674 | friend class ElaboratedType; | ||||||||
1675 | |||||||||
1676 | unsigned : NumTypeBits; | ||||||||
1677 | unsigned : NumTypeWithKeywordBits; | ||||||||
1678 | |||||||||
1679 | /// Whether the ElaboratedType has a trailing OwnedTagDecl. | ||||||||
1680 | unsigned HasOwnedTagDecl : 1; | ||||||||
1681 | }; | ||||||||
1682 | |||||||||
1683 | class VectorTypeBitfields { | ||||||||
1684 | friend class VectorType; | ||||||||
1685 | friend class DependentVectorType; | ||||||||
1686 | |||||||||
1687 | unsigned : NumTypeBits; | ||||||||
1688 | |||||||||
1689 | /// The kind of vector, either a generic vector type or some | ||||||||
1690 | /// target-specific vector type such as for AltiVec or Neon. | ||||||||
1691 | unsigned VecKind : 3; | ||||||||
1692 | /// The number of elements in the vector. | ||||||||
1693 | uint32_t NumElements; | ||||||||
1694 | }; | ||||||||
1695 | |||||||||
1696 | class AttributedTypeBitfields { | ||||||||
1697 | friend class AttributedType; | ||||||||
1698 | |||||||||
1699 | unsigned : NumTypeBits; | ||||||||
1700 | |||||||||
1701 | /// An AttributedType::Kind | ||||||||
1702 | unsigned AttrKind : 32 - NumTypeBits; | ||||||||
1703 | }; | ||||||||
1704 | |||||||||
1705 | class AutoTypeBitfields { | ||||||||
1706 | friend class AutoType; | ||||||||
1707 | |||||||||
1708 | unsigned : NumTypeBits; | ||||||||
1709 | |||||||||
1710 | /// Was this placeholder type spelled as 'auto', 'decltype(auto)', | ||||||||
1711 | /// or '__auto_type'? AutoTypeKeyword value. | ||||||||
1712 | unsigned Keyword : 2; | ||||||||
1713 | |||||||||
1714 | /// The number of template arguments in the type-constraints, which is | ||||||||
1715 | /// expected to be able to hold at least 1024 according to [implimits]. | ||||||||
1716 | /// However as this limit is somewhat easy to hit with template | ||||||||
1717 | /// metaprogramming we'd prefer to keep it as large as possible. | ||||||||
1718 | /// At the moment it has been left as a non-bitfield since this type | ||||||||
1719 | /// safely fits in 64 bits as an unsigned, so there is no reason to | ||||||||
1720 | /// introduce the performance impact of a bitfield. | ||||||||
1721 | unsigned NumArgs; | ||||||||
1722 | }; | ||||||||
1723 | |||||||||
1724 | class SubstTemplateTypeParmPackTypeBitfields { | ||||||||
1725 | friend class SubstTemplateTypeParmPackType; | ||||||||
1726 | |||||||||
1727 | unsigned : NumTypeBits; | ||||||||
1728 | |||||||||
1729 | /// The number of template arguments in \c Arguments, which is | ||||||||
1730 | /// expected to be able to hold at least 1024 according to [implimits]. | ||||||||
1731 | /// However as this limit is somewhat easy to hit with template | ||||||||
1732 | /// metaprogramming we'd prefer to keep it as large as possible. | ||||||||
1733 | /// At the moment it has been left as a non-bitfield since this type | ||||||||
1734 | /// safely fits in 64 bits as an unsigned, so there is no reason to | ||||||||
1735 | /// introduce the performance impact of a bitfield. | ||||||||
1736 | unsigned NumArgs; | ||||||||
1737 | }; | ||||||||
1738 | |||||||||
1739 | class TemplateSpecializationTypeBitfields { | ||||||||
1740 | friend class TemplateSpecializationType; | ||||||||
1741 | |||||||||
1742 | unsigned : NumTypeBits; | ||||||||
1743 | |||||||||
1744 | /// Whether this template specialization type is a substituted type alias. | ||||||||
1745 | unsigned TypeAlias : 1; | ||||||||
1746 | |||||||||
1747 | /// The number of template arguments named in this class template | ||||||||
1748 | /// specialization, which is expected to be able to hold at least 1024 | ||||||||
1749 | /// according to [implimits]. However, as this limit is somewhat easy to | ||||||||
1750 | /// hit with template metaprogramming we'd prefer to keep it as large | ||||||||
1751 | /// as possible. At the moment it has been left as a non-bitfield since | ||||||||
1752 | /// this type safely fits in 64 bits as an unsigned, so there is no reason | ||||||||
1753 | /// to introduce the performance impact of a bitfield. | ||||||||
1754 | unsigned NumArgs; | ||||||||
1755 | }; | ||||||||
1756 | |||||||||
1757 | class DependentTemplateSpecializationTypeBitfields { | ||||||||
1758 | friend class DependentTemplateSpecializationType; | ||||||||
1759 | |||||||||
1760 | unsigned : NumTypeBits; | ||||||||
1761 | unsigned : NumTypeWithKeywordBits; | ||||||||
1762 | |||||||||
1763 | /// The number of template arguments named in this class template | ||||||||
1764 | /// specialization, which is expected to be able to hold at least 1024 | ||||||||
1765 | /// according to [implimits]. However, as this limit is somewhat easy to | ||||||||
1766 | /// hit with template metaprogramming we'd prefer to keep it as large | ||||||||
1767 | /// as possible. At the moment it has been left as a non-bitfield since | ||||||||
1768 | /// this type safely fits in 64 bits as an unsigned, so there is no reason | ||||||||
1769 | /// to introduce the performance impact of a bitfield. | ||||||||
1770 | unsigned NumArgs; | ||||||||
1771 | }; | ||||||||
1772 | |||||||||
1773 | class PackExpansionTypeBitfields { | ||||||||
1774 | friend class PackExpansionType; | ||||||||
1775 | |||||||||
1776 | unsigned : NumTypeBits; | ||||||||
1777 | |||||||||
1778 | /// The number of expansions that this pack expansion will | ||||||||
1779 | /// generate when substituted (+1), which is expected to be able to | ||||||||
1780 | /// hold at least 1024 according to [implimits]. However, as this limit | ||||||||
1781 | /// is somewhat easy to hit with template metaprogramming we'd prefer to | ||||||||
1782 | /// keep it as large as possible. At the moment it has been left as a | ||||||||
1783 | /// non-bitfield since this type safely fits in 64 bits as an unsigned, so | ||||||||
1784 | /// there is no reason to introduce the performance impact of a bitfield. | ||||||||
1785 | /// | ||||||||
1786 | /// This field will only have a non-zero value when some of the parameter | ||||||||
1787 | /// packs that occur within the pattern have been substituted but others | ||||||||
1788 | /// have not. | ||||||||
1789 | unsigned NumExpansions; | ||||||||
1790 | }; | ||||||||
1791 | |||||||||
1792 | union { | ||||||||
1793 | TypeBitfields TypeBits; | ||||||||
1794 | ArrayTypeBitfields ArrayTypeBits; | ||||||||
1795 | ConstantArrayTypeBitfields ConstantArrayTypeBits; | ||||||||
1796 | AttributedTypeBitfields AttributedTypeBits; | ||||||||
1797 | AutoTypeBitfields AutoTypeBits; | ||||||||
1798 | BuiltinTypeBitfields BuiltinTypeBits; | ||||||||
1799 | FunctionTypeBitfields FunctionTypeBits; | ||||||||
1800 | ObjCObjectTypeBitfields ObjCObjectTypeBits; | ||||||||
1801 | ReferenceTypeBitfields ReferenceTypeBits; | ||||||||
1802 | TypeWithKeywordBitfields TypeWithKeywordBits; | ||||||||
1803 | ElaboratedTypeBitfields ElaboratedTypeBits; | ||||||||
1804 | VectorTypeBitfields VectorTypeBits; | ||||||||
1805 | SubstTemplateTypeParmPackTypeBitfields SubstTemplateTypeParmPackTypeBits; | ||||||||
1806 | TemplateSpecializationTypeBitfields TemplateSpecializationTypeBits; | ||||||||
1807 | DependentTemplateSpecializationTypeBitfields | ||||||||
1808 | DependentTemplateSpecializationTypeBits; | ||||||||
1809 | PackExpansionTypeBitfields PackExpansionTypeBits; | ||||||||
1810 | }; | ||||||||
1811 | |||||||||
1812 | private: | ||||||||
1813 | template <class T> friend class TypePropertyCache; | ||||||||
1814 | |||||||||
1815 | /// Set whether this type comes from an AST file. | ||||||||
1816 | void setFromAST(bool V = true) const { | ||||||||
1817 | TypeBits.FromAST = V; | ||||||||
1818 | } | ||||||||
1819 | |||||||||
1820 | protected: | ||||||||
1821 | friend class ASTContext; | ||||||||
1822 | |||||||||
1823 | Type(TypeClass tc, QualType canon, TypeDependence Dependence) | ||||||||
1824 | : ExtQualsTypeCommonBase(this, | ||||||||
1825 | canon.isNull() ? QualType(this_(), 0) : canon) { | ||||||||
1826 | static_assert(sizeof(*this) <= 8 + sizeof(ExtQualsTypeCommonBase), | ||||||||
1827 | "changing bitfields changed sizeof(Type)!"); | ||||||||
1828 | static_assert(alignof(decltype(*this)) % sizeof(void *) == 0, | ||||||||
1829 | "Insufficient alignment!"); | ||||||||
1830 | TypeBits.TC = tc; | ||||||||
1831 | TypeBits.Dependence = static_cast<unsigned>(Dependence); | ||||||||
1832 | TypeBits.CacheValid = false; | ||||||||
1833 | TypeBits.CachedLocalOrUnnamed = false; | ||||||||
1834 | TypeBits.CachedLinkage = NoLinkage; | ||||||||
1835 | TypeBits.FromAST = false; | ||||||||
1836 | } | ||||||||
1837 | |||||||||
1838 | // silence VC++ warning C4355: 'this' : used in base member initializer list | ||||||||
1839 | Type *this_() { return this; } | ||||||||
1840 | |||||||||
1841 | void setDependence(TypeDependence D) { | ||||||||
1842 | TypeBits.Dependence = static_cast<unsigned>(D); | ||||||||
1843 | } | ||||||||
1844 | |||||||||
1845 | void addDependence(TypeDependence D) { setDependence(getDependence() | D); } | ||||||||
1846 | |||||||||
1847 | public: | ||||||||
1848 | friend class ASTReader; | ||||||||
1849 | friend class ASTWriter; | ||||||||
1850 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
1851 | template <class T> friend class serialization::AbstractTypeWriter; | ||||||||
1852 | |||||||||
1853 | Type(const Type &) = delete; | ||||||||
1854 | Type(Type &&) = delete; | ||||||||
1855 | Type &operator=(const Type &) = delete; | ||||||||
1856 | Type &operator=(Type &&) = delete; | ||||||||
1857 | |||||||||
1858 | TypeClass getTypeClass() const { return static_cast<TypeClass>(TypeBits.TC); } | ||||||||
1859 | |||||||||
1860 | /// Whether this type comes from an AST file. | ||||||||
1861 | bool isFromAST() const { return TypeBits.FromAST; } | ||||||||
1862 | |||||||||
1863 | /// Whether this type is or contains an unexpanded parameter | ||||||||
1864 | /// pack, used to support C++0x variadic templates. | ||||||||
1865 | /// | ||||||||
1866 | /// A type that contains a parameter pack shall be expanded by the | ||||||||
1867 | /// ellipsis operator at some point. For example, the typedef in the | ||||||||
1868 | /// following example contains an unexpanded parameter pack 'T': | ||||||||
1869 | /// | ||||||||
1870 | /// \code | ||||||||
1871 | /// template<typename ...T> | ||||||||
1872 | /// struct X { | ||||||||
1873 | /// typedef T* pointer_types; // ill-formed; T is a parameter pack. | ||||||||
1874 | /// }; | ||||||||
1875 | /// \endcode | ||||||||
1876 | /// | ||||||||
1877 | /// Note that this routine does not specify which | ||||||||
1878 | bool containsUnexpandedParameterPack() const { | ||||||||
1879 | return getDependence() & TypeDependence::UnexpandedPack; | ||||||||
1880 | } | ||||||||
1881 | |||||||||
1882 | /// Determines if this type would be canonical if it had no further | ||||||||
1883 | /// qualification. | ||||||||
1884 | bool isCanonicalUnqualified() const { | ||||||||
1885 | return CanonicalType == QualType(this, 0); | ||||||||
1886 | } | ||||||||
1887 | |||||||||
1888 | /// Pull a single level of sugar off of this locally-unqualified type. | ||||||||
1889 | /// Users should generally prefer SplitQualType::getSingleStepDesugaredType() | ||||||||
1890 | /// or QualType::getSingleStepDesugaredType(const ASTContext&). | ||||||||
1891 | QualType getLocallyUnqualifiedSingleStepDesugaredType() const; | ||||||||
1892 | |||||||||
1893 | /// As an extension, we classify types as one of "sized" or "sizeless"; | ||||||||
1894 | /// every type is one or the other. Standard types are all sized; | ||||||||
1895 | /// sizeless types are purely an extension. | ||||||||
1896 | /// | ||||||||
1897 | /// Sizeless types contain data with no specified size, alignment, | ||||||||
1898 | /// or layout. | ||||||||
1899 | bool isSizelessType() const; | ||||||||
1900 | bool isSizelessBuiltinType() const; | ||||||||
1901 | |||||||||
1902 | /// Determines if this is a sizeless type supported by the | ||||||||
1903 | /// 'arm_sve_vector_bits' type attribute, which can be applied to a single | ||||||||
1904 | /// SVE vector or predicate, excluding tuple types such as svint32x4_t. | ||||||||
1905 | bool isVLSTBuiltinType() const; | ||||||||
1906 | |||||||||
1907 | /// Returns the representative type for the element of an SVE builtin type. | ||||||||
1908 | /// This is used to represent fixed-length SVE vectors created with the | ||||||||
1909 | /// 'arm_sve_vector_bits' type attribute as VectorType. | ||||||||
1910 | QualType getSveEltType(const ASTContext &Ctx) const; | ||||||||
1911 | |||||||||
1912 | /// Types are partitioned into 3 broad categories (C99 6.2.5p1): | ||||||||
1913 | /// object types, function types, and incomplete types. | ||||||||
1914 | |||||||||
1915 | /// Return true if this is an incomplete type. | ||||||||
1916 | /// A type that can describe objects, but which lacks information needed to | ||||||||
1917 | /// determine its size (e.g. void, or a fwd declared struct). Clients of this | ||||||||
1918 | /// routine will need to determine if the size is actually required. | ||||||||
1919 | /// | ||||||||
1920 | /// Def If non-null, and the type refers to some kind of declaration | ||||||||
1921 | /// that can be completed (such as a C struct, C++ class, or Objective-C | ||||||||
1922 | /// class), will be set to the declaration. | ||||||||
1923 | bool isIncompleteType(NamedDecl **Def = nullptr) const; | ||||||||
1924 | |||||||||
1925 | /// Return true if this is an incomplete or object | ||||||||
1926 | /// type, in other words, not a function type. | ||||||||
1927 | bool isIncompleteOrObjectType() const { | ||||||||
1928 | return !isFunctionType(); | ||||||||
1929 | } | ||||||||
1930 | |||||||||
1931 | /// Determine whether this type is an object type. | ||||||||
1932 | bool isObjectType() const { | ||||||||
1933 | // C++ [basic.types]p8: | ||||||||
1934 | // An object type is a (possibly cv-qualified) type that is not a | ||||||||
1935 | // function type, not a reference type, and not a void type. | ||||||||
1936 | return !isReferenceType() && !isFunctionType() && !isVoidType(); | ||||||||
1937 | } | ||||||||
1938 | |||||||||
1939 | /// Return true if this is a literal type | ||||||||
1940 | /// (C++11 [basic.types]p10) | ||||||||
1941 | bool isLiteralType(const ASTContext &Ctx) const; | ||||||||
1942 | |||||||||
1943 | /// Determine if this type is a structural type, per C++20 [temp.param]p7. | ||||||||
1944 | bool isStructuralType() const; | ||||||||
1945 | |||||||||
1946 | /// Test if this type is a standard-layout type. | ||||||||
1947 | /// (C++0x [basic.type]p9) | ||||||||
1948 | bool isStandardLayoutType() const; | ||||||||
1949 | |||||||||
1950 | /// Helper methods to distinguish type categories. All type predicates | ||||||||
1951 | /// operate on the canonical type, ignoring typedefs and qualifiers. | ||||||||
1952 | |||||||||
1953 | /// Returns true if the type is a builtin type. | ||||||||
1954 | bool isBuiltinType() const; | ||||||||
1955 | |||||||||
1956 | /// Test for a particular builtin type. | ||||||||
1957 | bool isSpecificBuiltinType(unsigned K) const; | ||||||||
1958 | |||||||||
1959 | /// Test for a type which does not represent an actual type-system type but | ||||||||
1960 | /// is instead used as a placeholder for various convenient purposes within | ||||||||
1961 | /// Clang. All such types are BuiltinTypes. | ||||||||
1962 | bool isPlaceholderType() const; | ||||||||
1963 | const BuiltinType *getAsPlaceholderType() const; | ||||||||
1964 | |||||||||
1965 | /// Test for a specific placeholder type. | ||||||||
1966 | bool isSpecificPlaceholderType(unsigned K) const; | ||||||||
1967 | |||||||||
1968 | /// Test for a placeholder type other than Overload; see | ||||||||
1969 | /// BuiltinType::isNonOverloadPlaceholderType. | ||||||||
1970 | bool isNonOverloadPlaceholderType() const; | ||||||||
1971 | |||||||||
1972 | /// isIntegerType() does *not* include complex integers (a GCC extension). | ||||||||
1973 | /// isComplexIntegerType() can be used to test for complex integers. | ||||||||
1974 | bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) | ||||||||
1975 | bool isEnumeralType() const; | ||||||||
1976 | |||||||||
1977 | /// Determine whether this type is a scoped enumeration type. | ||||||||
1978 | bool isScopedEnumeralType() const; | ||||||||
1979 | bool isBooleanType() const; | ||||||||
1980 | bool isCharType() const; | ||||||||
1981 | bool isWideCharType() const; | ||||||||
1982 | bool isChar8Type() const; | ||||||||
1983 | bool isChar16Type() const; | ||||||||
1984 | bool isChar32Type() const; | ||||||||
1985 | bool isAnyCharacterType() const; | ||||||||
1986 | bool isIntegralType(const ASTContext &Ctx) const; | ||||||||
1987 | |||||||||
1988 | /// Determine whether this type is an integral or enumeration type. | ||||||||
1989 | bool isIntegralOrEnumerationType() const; | ||||||||
1990 | |||||||||
1991 | /// Determine whether this type is an integral or unscoped enumeration type. | ||||||||
1992 | bool isIntegralOrUnscopedEnumerationType() const; | ||||||||
1993 | bool isUnscopedEnumerationType() const; | ||||||||
1994 | |||||||||
1995 | /// Floating point categories. | ||||||||
1996 | bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) | ||||||||
1997 | /// isComplexType() does *not* include complex integers (a GCC extension). | ||||||||
1998 | /// isComplexIntegerType() can be used to test for complex integers. | ||||||||
1999 | bool isComplexType() const; // C99 6.2.5p11 (complex) | ||||||||
2000 | bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. | ||||||||
2001 | bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) | ||||||||
2002 | bool isHalfType() const; // OpenCL 6.1.1.1, NEON (IEEE 754-2008 half) | ||||||||
2003 | bool isFloat16Type() const; // C11 extension ISO/IEC TS 18661 | ||||||||
2004 | bool isBFloat16Type() const; | ||||||||
2005 | bool isFloat128Type() const; | ||||||||
2006 | bool isRealType() const; // C99 6.2.5p17 (real floating + integer) | ||||||||
2007 | bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) | ||||||||
2008 | bool isVoidType() const; // C99 6.2.5p19 | ||||||||
2009 | bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) | ||||||||
2010 | bool isAggregateType() const; | ||||||||
2011 | bool isFundamentalType() const; | ||||||||
2012 | bool isCompoundType() const; | ||||||||
2013 | |||||||||
2014 | // Type Predicates: Check to see if this type is structurally the specified | ||||||||
2015 | // type, ignoring typedefs and qualifiers. | ||||||||
2016 | bool isFunctionType() const; | ||||||||
2017 | bool isFunctionNoProtoType() const { return getAs<FunctionNoProtoType>(); } | ||||||||
2018 | bool isFunctionProtoType() const { return getAs<FunctionProtoType>(); } | ||||||||
2019 | bool isPointerType() const; | ||||||||
2020 | bool isAnyPointerType() const; // Any C pointer or ObjC object pointer | ||||||||
2021 | bool isBlockPointerType() const; | ||||||||
2022 | bool isVoidPointerType() const; | ||||||||
2023 | bool isReferenceType() const; | ||||||||
2024 | bool isLValueReferenceType() const; | ||||||||
2025 | bool isRValueReferenceType() const; | ||||||||
2026 | bool isObjectPointerType() const; | ||||||||
2027 | bool isFunctionPointerType() const; | ||||||||
2028 | bool isFunctionReferenceType() const; | ||||||||
2029 | bool isMemberPointerType() const; | ||||||||
2030 | bool isMemberFunctionPointerType() const; | ||||||||
2031 | bool isMemberDataPointerType() const; | ||||||||
2032 | bool isArrayType() const; | ||||||||
2033 | bool isConstantArrayType() const; | ||||||||
2034 | bool isIncompleteArrayType() const; | ||||||||
2035 | bool isVariableArrayType() const; | ||||||||
2036 | bool isDependentSizedArrayType() const; | ||||||||
2037 | bool isRecordType() const; | ||||||||
2038 | bool isClassType() const; | ||||||||
2039 | bool isStructureType() const; | ||||||||
2040 | bool isObjCBoxableRecordType() const; | ||||||||
2041 | bool isInterfaceType() const; | ||||||||
2042 | bool isStructureOrClassType() const; | ||||||||
2043 | bool isUnionType() const; | ||||||||
2044 | bool isComplexIntegerType() const; // GCC _Complex integer type. | ||||||||
2045 | bool isVectorType() const; // GCC vector type. | ||||||||
2046 | bool isExtVectorType() const; // Extended vector type. | ||||||||
2047 | bool isMatrixType() const; // Matrix type. | ||||||||
2048 | bool isConstantMatrixType() const; // Constant matrix type. | ||||||||
2049 | bool isDependentAddressSpaceType() const; // value-dependent address space qualifier | ||||||||
2050 | bool isObjCObjectPointerType() const; // pointer to ObjC object | ||||||||
2051 | bool isObjCRetainableType() const; // ObjC object or block pointer | ||||||||
2052 | bool isObjCLifetimeType() const; // (array of)* retainable type | ||||||||
2053 | bool isObjCIndirectLifetimeType() const; // (pointer to)* lifetime type | ||||||||
2054 | bool isObjCNSObjectType() const; // __attribute__((NSObject)) | ||||||||
2055 | bool isObjCIndependentClassType() const; // __attribute__((objc_independent_class)) | ||||||||
2056 | // FIXME: change this to 'raw' interface type, so we can used 'interface' type | ||||||||
2057 | // for the common case. | ||||||||
2058 | bool isObjCObjectType() const; // NSString or typeof(*(id)0) | ||||||||
2059 | bool isObjCQualifiedInterfaceType() const; // NSString<foo> | ||||||||
2060 | bool isObjCQualifiedIdType() const; // id<foo> | ||||||||
2061 | bool isObjCQualifiedClassType() const; // Class<foo> | ||||||||
2062 | bool isObjCObjectOrInterfaceType() const; | ||||||||
2063 | bool isObjCIdType() const; // id | ||||||||
2064 | bool isDecltypeType() const; | ||||||||
2065 | /// Was this type written with the special inert-in-ARC __unsafe_unretained | ||||||||
2066 | /// qualifier? | ||||||||
2067 | /// | ||||||||
2068 | /// This approximates the answer to the following question: if this | ||||||||
2069 | /// translation unit were compiled in ARC, would this type be qualified | ||||||||
2070 | /// with __unsafe_unretained? | ||||||||
2071 | bool isObjCInertUnsafeUnretainedType() const { | ||||||||
2072 | return hasAttr(attr::ObjCInertUnsafeUnretained); | ||||||||
2073 | } | ||||||||
2074 | |||||||||
2075 | /// Whether the type is Objective-C 'id' or a __kindof type of an | ||||||||
2076 | /// object type, e.g., __kindof NSView * or __kindof id | ||||||||
2077 | /// <NSCopying>. | ||||||||
2078 | /// | ||||||||
2079 | /// \param bound Will be set to the bound on non-id subtype types, | ||||||||
2080 | /// which will be (possibly specialized) Objective-C class type, or | ||||||||
2081 | /// null for 'id. | ||||||||
2082 | bool isObjCIdOrObjectKindOfType(const ASTContext &ctx, | ||||||||
2083 | const ObjCObjectType *&bound) const; | ||||||||
2084 | |||||||||
2085 | bool isObjCClassType() const; // Class | ||||||||
2086 | |||||||||
2087 | /// Whether the type is Objective-C 'Class' or a __kindof type of an | ||||||||
2088 | /// Class type, e.g., __kindof Class <NSCopying>. | ||||||||
2089 | /// | ||||||||
2090 | /// Unlike \c isObjCIdOrObjectKindOfType, there is no relevant bound | ||||||||
2091 | /// here because Objective-C's type system cannot express "a class | ||||||||
2092 | /// object for a subclass of NSFoo". | ||||||||
2093 | bool isObjCClassOrClassKindOfType() const; | ||||||||
2094 | |||||||||
2095 | bool isBlockCompatibleObjCPointerType(ASTContext &ctx) const; | ||||||||
2096 | bool isObjCSelType() const; // Class | ||||||||
2097 | bool isObjCBuiltinType() const; // 'id' or 'Class' | ||||||||
2098 | bool isObjCARCBridgableType() const; | ||||||||
2099 | bool isCARCBridgableType() const; | ||||||||
2100 | bool isTemplateTypeParmType() const; // C++ template type parameter | ||||||||
2101 | bool isNullPtrType() const; // C++11 std::nullptr_t | ||||||||
2102 | bool isNothrowT() const; // C++ std::nothrow_t | ||||||||
2103 | bool isAlignValT() const; // C++17 std::align_val_t | ||||||||
2104 | bool isStdByteType() const; // C++17 std::byte | ||||||||
2105 | bool isAtomicType() const; // C11 _Atomic() | ||||||||
2106 | bool isUndeducedAutoType() const; // C++11 auto or | ||||||||
2107 | // C++14 decltype(auto) | ||||||||
2108 | bool isTypedefNameType() const; // typedef or alias template | ||||||||
2109 | |||||||||
2110 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
2111 | bool is##Id##Type() const; | ||||||||
2112 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
2113 | |||||||||
2114 | bool isImageType() const; // Any OpenCL image type | ||||||||
2115 | |||||||||
2116 | bool isSamplerT() const; // OpenCL sampler_t | ||||||||
2117 | bool isEventT() const; // OpenCL event_t | ||||||||
2118 | bool isClkEventT() const; // OpenCL clk_event_t | ||||||||
2119 | bool isQueueT() const; // OpenCL queue_t | ||||||||
2120 | bool isReserveIDT() const; // OpenCL reserve_id_t | ||||||||
2121 | |||||||||
2122 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
2123 | bool is##Id##Type() const; | ||||||||
2124 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
2125 | // Type defined in cl_intel_device_side_avc_motion_estimation OpenCL extension | ||||||||
2126 | bool isOCLIntelSubgroupAVCType() const; | ||||||||
2127 | bool isOCLExtOpaqueType() const; // Any OpenCL extension type | ||||||||
2128 | |||||||||
2129 | bool isPipeType() const; // OpenCL pipe type | ||||||||
2130 | bool isExtIntType() const; // Extended Int Type | ||||||||
2131 | bool isOpenCLSpecificType() const; // Any OpenCL specific type | ||||||||
2132 | |||||||||
2133 | /// Determines if this type, which must satisfy | ||||||||
2134 | /// isObjCLifetimeType(), is implicitly __unsafe_unretained rather | ||||||||
2135 | /// than implicitly __strong. | ||||||||
2136 | bool isObjCARCImplicitlyUnretainedType() const; | ||||||||
2137 | |||||||||
2138 | /// Check if the type is the CUDA device builtin surface type. | ||||||||
2139 | bool isCUDADeviceBuiltinSurfaceType() const; | ||||||||
2140 | /// Check if the type is the CUDA device builtin texture type. | ||||||||
2141 | bool isCUDADeviceBuiltinTextureType() const; | ||||||||
2142 | |||||||||
2143 | /// Return the implicit lifetime for this type, which must not be dependent. | ||||||||
2144 | Qualifiers::ObjCLifetime getObjCARCImplicitLifetime() const; | ||||||||
2145 | |||||||||
2146 | enum ScalarTypeKind { | ||||||||
2147 | STK_CPointer, | ||||||||
2148 | STK_BlockPointer, | ||||||||
2149 | STK_ObjCObjectPointer, | ||||||||
2150 | STK_MemberPointer, | ||||||||
2151 | STK_Bool, | ||||||||
2152 | STK_Integral, | ||||||||
2153 | STK_Floating, | ||||||||
2154 | STK_IntegralComplex, | ||||||||
2155 | STK_FloatingComplex, | ||||||||
2156 | STK_FixedPoint | ||||||||
2157 | }; | ||||||||
2158 | |||||||||
2159 | /// Given that this is a scalar type, classify it. | ||||||||
2160 | ScalarTypeKind getScalarTypeKind() const; | ||||||||
2161 | |||||||||
2162 | TypeDependence getDependence() const { | ||||||||
2163 | return static_cast<TypeDependence>(TypeBits.Dependence); | ||||||||
2164 | } | ||||||||
2165 | |||||||||
2166 | /// Whether this type is an error type. | ||||||||
2167 | bool containsErrors() const { | ||||||||
2168 | return getDependence() & TypeDependence::Error; | ||||||||
2169 | } | ||||||||
2170 | |||||||||
2171 | /// Whether this type is a dependent type, meaning that its definition | ||||||||
2172 | /// somehow depends on a template parameter (C++ [temp.dep.type]). | ||||||||
2173 | bool isDependentType() const { | ||||||||
2174 | return getDependence() & TypeDependence::Dependent; | ||||||||
2175 | } | ||||||||
2176 | |||||||||
2177 | /// Determine whether this type is an instantiation-dependent type, | ||||||||
2178 | /// meaning that the type involves a template parameter (even if the | ||||||||
2179 | /// definition does not actually depend on the type substituted for that | ||||||||
2180 | /// template parameter). | ||||||||
2181 | bool isInstantiationDependentType() const { | ||||||||
2182 | return getDependence() & TypeDependence::Instantiation; | ||||||||
2183 | } | ||||||||
2184 | |||||||||
2185 | /// Determine whether this type is an undeduced type, meaning that | ||||||||
2186 | /// it somehow involves a C++11 'auto' type or similar which has not yet been | ||||||||
2187 | /// deduced. | ||||||||
2188 | bool isUndeducedType() const; | ||||||||
2189 | |||||||||
2190 | /// Whether this type is a variably-modified type (C99 6.7.5). | ||||||||
2191 | bool isVariablyModifiedType() const { | ||||||||
2192 | return getDependence() & TypeDependence::VariablyModified; | ||||||||
2193 | } | ||||||||
2194 | |||||||||
2195 | /// Whether this type involves a variable-length array type | ||||||||
2196 | /// with a definite size. | ||||||||
2197 | bool hasSizedVLAType() const; | ||||||||
2198 | |||||||||
2199 | /// Whether this type is or contains a local or unnamed type. | ||||||||
2200 | bool hasUnnamedOrLocalType() const; | ||||||||
2201 | |||||||||
2202 | bool isOverloadableType() const; | ||||||||
2203 | |||||||||
2204 | /// Determine wither this type is a C++ elaborated-type-specifier. | ||||||||
2205 | bool isElaboratedTypeSpecifier() const; | ||||||||
2206 | |||||||||
2207 | bool canDecayToPointerType() const; | ||||||||
2208 | |||||||||
2209 | /// Whether this type is represented natively as a pointer. This includes | ||||||||
2210 | /// pointers, references, block pointers, and Objective-C interface, | ||||||||
2211 | /// qualified id, and qualified interface types, as well as nullptr_t. | ||||||||
2212 | bool hasPointerRepresentation() const; | ||||||||
2213 | |||||||||
2214 | /// Whether this type can represent an objective pointer type for the | ||||||||
2215 | /// purpose of GC'ability | ||||||||
2216 | bool hasObjCPointerRepresentation() const; | ||||||||
2217 | |||||||||
2218 | /// Determine whether this type has an integer representation | ||||||||
2219 | /// of some sort, e.g., it is an integer type or a vector. | ||||||||
2220 | bool hasIntegerRepresentation() const; | ||||||||
2221 | |||||||||
2222 | /// Determine whether this type has an signed integer representation | ||||||||
2223 | /// of some sort, e.g., it is an signed integer type or a vector. | ||||||||
2224 | bool hasSignedIntegerRepresentation() const; | ||||||||
2225 | |||||||||
2226 | /// Determine whether this type has an unsigned integer representation | ||||||||
2227 | /// of some sort, e.g., it is an unsigned integer type or a vector. | ||||||||
2228 | bool hasUnsignedIntegerRepresentation() const; | ||||||||
2229 | |||||||||
2230 | /// Determine whether this type has a floating-point representation | ||||||||
2231 | /// of some sort, e.g., it is a floating-point type or a vector thereof. | ||||||||
2232 | bool hasFloatingRepresentation() const; | ||||||||
2233 | |||||||||
2234 | // Type Checking Functions: Check to see if this type is structurally the | ||||||||
2235 | // specified type, ignoring typedefs and qualifiers, and return a pointer to | ||||||||
2236 | // the best type we can. | ||||||||
2237 | const RecordType *getAsStructureType() const; | ||||||||
2238 | /// NOTE: getAs*ArrayType are methods on ASTContext. | ||||||||
2239 | const RecordType *getAsUnionType() const; | ||||||||
2240 | const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. | ||||||||
2241 | const ObjCObjectType *getAsObjCInterfaceType() const; | ||||||||
2242 | |||||||||
2243 | // The following is a convenience method that returns an ObjCObjectPointerType | ||||||||
2244 | // for object declared using an interface. | ||||||||
2245 | const ObjCObjectPointerType *getAsObjCInterfacePointerType() const; | ||||||||
2246 | const ObjCObjectPointerType *getAsObjCQualifiedIdType() const; | ||||||||
2247 | const ObjCObjectPointerType *getAsObjCQualifiedClassType() const; | ||||||||
2248 | const ObjCObjectType *getAsObjCQualifiedInterfaceType() const; | ||||||||
2249 | |||||||||
2250 | /// Retrieves the CXXRecordDecl that this type refers to, either | ||||||||
2251 | /// because the type is a RecordType or because it is the injected-class-name | ||||||||
2252 | /// type of a class template or class template partial specialization. | ||||||||
2253 | CXXRecordDecl *getAsCXXRecordDecl() const; | ||||||||
2254 | |||||||||
2255 | /// Retrieves the RecordDecl this type refers to. | ||||||||
2256 | RecordDecl *getAsRecordDecl() const; | ||||||||
2257 | |||||||||
2258 | /// Retrieves the TagDecl that this type refers to, either | ||||||||
2259 | /// because the type is a TagType or because it is the injected-class-name | ||||||||
2260 | /// type of a class template or class template partial specialization. | ||||||||
2261 | TagDecl *getAsTagDecl() const; | ||||||||
2262 | |||||||||
2263 | /// If this is a pointer or reference to a RecordType, return the | ||||||||
2264 | /// CXXRecordDecl that the type refers to. | ||||||||
2265 | /// | ||||||||
2266 | /// If this is not a pointer or reference, or the type being pointed to does | ||||||||
2267 | /// not refer to a CXXRecordDecl, returns NULL. | ||||||||
2268 | const CXXRecordDecl *getPointeeCXXRecordDecl() const; | ||||||||
2269 | |||||||||
2270 | /// Get the DeducedType whose type will be deduced for a variable with | ||||||||
2271 | /// an initializer of this type. This looks through declarators like pointer | ||||||||
2272 | /// types, but not through decltype or typedefs. | ||||||||
2273 | DeducedType *getContainedDeducedType() const; | ||||||||
2274 | |||||||||
2275 | /// Get the AutoType whose type will be deduced for a variable with | ||||||||
2276 | /// an initializer of this type. This looks through declarators like pointer | ||||||||
2277 | /// types, but not through decltype or typedefs. | ||||||||
2278 | AutoType *getContainedAutoType() const { | ||||||||
2279 | return dyn_cast_or_null<AutoType>(getContainedDeducedType()); | ||||||||
2280 | } | ||||||||
2281 | |||||||||
2282 | /// Determine whether this type was written with a leading 'auto' | ||||||||
2283 | /// corresponding to a trailing return type (possibly for a nested | ||||||||
2284 | /// function type within a pointer to function type or similar). | ||||||||
2285 | bool hasAutoForTrailingReturnType() const; | ||||||||
2286 | |||||||||
2287 | /// Member-template getAs<specific type>'. Look through sugar for | ||||||||
2288 | /// an instance of \<specific type>. This scheme will eventually | ||||||||
2289 | /// replace the specific getAsXXXX methods above. | ||||||||
2290 | /// | ||||||||
2291 | /// There are some specializations of this member template listed | ||||||||
2292 | /// immediately following this class. | ||||||||
2293 | template <typename T> const T *getAs() const; | ||||||||
2294 | |||||||||
2295 | /// Member-template getAsAdjusted<specific type>. Look through specific kinds | ||||||||
2296 | /// of sugar (parens, attributes, etc) for an instance of \<specific type>. | ||||||||
2297 | /// This is used when you need to walk over sugar nodes that represent some | ||||||||
2298 | /// kind of type adjustment from a type that was written as a \<specific type> | ||||||||
2299 | /// to another type that is still canonically a \<specific type>. | ||||||||
2300 | template <typename T> const T *getAsAdjusted() const; | ||||||||
2301 | |||||||||
2302 | /// A variant of getAs<> for array types which silently discards | ||||||||
2303 | /// qualifiers from the outermost type. | ||||||||
2304 | const ArrayType *getAsArrayTypeUnsafe() const; | ||||||||
2305 | |||||||||
2306 | /// Member-template castAs<specific type>. Look through sugar for | ||||||||
2307 | /// the underlying instance of \<specific type>. | ||||||||
2308 | /// | ||||||||
2309 | /// This method has the same relationship to getAs<T> as cast<T> has | ||||||||
2310 | /// to dyn_cast<T>; which is to say, the underlying type *must* | ||||||||
2311 | /// have the intended type, and this method will never return null. | ||||||||
2312 | template <typename T> const T *castAs() const; | ||||||||
2313 | |||||||||
2314 | /// A variant of castAs<> for array type which silently discards | ||||||||
2315 | /// qualifiers from the outermost type. | ||||||||
2316 | const ArrayType *castAsArrayTypeUnsafe() const; | ||||||||
2317 | |||||||||
2318 | /// Determine whether this type had the specified attribute applied to it | ||||||||
2319 | /// (looking through top-level type sugar). | ||||||||
2320 | bool hasAttr(attr::Kind AK) const; | ||||||||
2321 | |||||||||
2322 | /// Get the base element type of this type, potentially discarding type | ||||||||
2323 | /// qualifiers. This should never be used when type qualifiers | ||||||||
2324 | /// are meaningful. | ||||||||
2325 | const Type *getBaseElementTypeUnsafe() const; | ||||||||
2326 | |||||||||
2327 | /// If this is an array type, return the element type of the array, | ||||||||
2328 | /// potentially with type qualifiers missing. | ||||||||
2329 | /// This should never be used when type qualifiers are meaningful. | ||||||||
2330 | const Type *getArrayElementTypeNoTypeQual() const; | ||||||||
2331 | |||||||||
2332 | /// If this is a pointer type, return the pointee type. | ||||||||
2333 | /// If this is an array type, return the array element type. | ||||||||
2334 | /// This should never be used when type qualifiers are meaningful. | ||||||||
2335 | const Type *getPointeeOrArrayElementType() const; | ||||||||
2336 | |||||||||
2337 | /// If this is a pointer, ObjC object pointer, or block | ||||||||
2338 | /// pointer, this returns the respective pointee. | ||||||||
2339 | QualType getPointeeType() const; | ||||||||
2340 | |||||||||
2341 | /// Return the specified type with any "sugar" removed from the type, | ||||||||
2342 | /// removing any typedefs, typeofs, etc., as well as any qualifiers. | ||||||||
2343 | const Type *getUnqualifiedDesugaredType() const; | ||||||||
2344 | |||||||||
2345 | /// More type predicates useful for type checking/promotion | ||||||||
2346 | bool isPromotableIntegerType() const; // C99 6.3.1.1p2 | ||||||||
2347 | |||||||||
2348 | /// Return true if this is an integer type that is | ||||||||
2349 | /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], | ||||||||
2350 | /// or an enum decl which has a signed representation. | ||||||||
2351 | bool isSignedIntegerType() const; | ||||||||
2352 | |||||||||
2353 | /// Return true if this is an integer type that is | ||||||||
2354 | /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], | ||||||||
2355 | /// or an enum decl which has an unsigned representation. | ||||||||
2356 | bool isUnsignedIntegerType() const; | ||||||||
2357 | |||||||||
2358 | /// Determines whether this is an integer type that is signed or an | ||||||||
2359 | /// enumeration types whose underlying type is a signed integer type. | ||||||||
2360 | bool isSignedIntegerOrEnumerationType() const; | ||||||||
2361 | |||||||||
2362 | /// Determines whether this is an integer type that is unsigned or an | ||||||||
2363 | /// enumeration types whose underlying type is a unsigned integer type. | ||||||||
2364 | bool isUnsignedIntegerOrEnumerationType() const; | ||||||||
2365 | |||||||||
2366 | /// Return true if this is a fixed point type according to | ||||||||
2367 | /// ISO/IEC JTC1 SC22 WG14 N1169. | ||||||||
2368 | bool isFixedPointType() const; | ||||||||
2369 | |||||||||
2370 | /// Return true if this is a fixed point or integer type. | ||||||||
2371 | bool isFixedPointOrIntegerType() const; | ||||||||
2372 | |||||||||
2373 | /// Return true if this is a saturated fixed point type according to | ||||||||
2374 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. | ||||||||
2375 | bool isSaturatedFixedPointType() const; | ||||||||
2376 | |||||||||
2377 | /// Return true if this is a saturated fixed point type according to | ||||||||
2378 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. | ||||||||
2379 | bool isUnsaturatedFixedPointType() const; | ||||||||
2380 | |||||||||
2381 | /// Return true if this is a fixed point type that is signed according | ||||||||
2382 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. | ||||||||
2383 | bool isSignedFixedPointType() const; | ||||||||
2384 | |||||||||
2385 | /// Return true if this is a fixed point type that is unsigned according | ||||||||
2386 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. | ||||||||
2387 | bool isUnsignedFixedPointType() const; | ||||||||
2388 | |||||||||
2389 | /// Return true if this is not a variable sized type, | ||||||||
2390 | /// according to the rules of C99 6.7.5p3. It is not legal to call this on | ||||||||
2391 | /// incomplete types. | ||||||||
2392 | bool isConstantSizeType() const; | ||||||||
2393 | |||||||||
2394 | /// Returns true if this type can be represented by some | ||||||||
2395 | /// set of type specifiers. | ||||||||
2396 | bool isSpecifierType() const; | ||||||||
2397 | |||||||||
2398 | /// Determine the linkage of this type. | ||||||||
2399 | Linkage getLinkage() const; | ||||||||
2400 | |||||||||
2401 | /// Determine the visibility of this type. | ||||||||
2402 | Visibility getVisibility() const { | ||||||||
2403 | return getLinkageAndVisibility().getVisibility(); | ||||||||
2404 | } | ||||||||
2405 | |||||||||
2406 | /// Return true if the visibility was explicitly set is the code. | ||||||||
2407 | bool isVisibilityExplicit() const { | ||||||||
2408 | return getLinkageAndVisibility().isVisibilityExplicit(); | ||||||||
2409 | } | ||||||||
2410 | |||||||||
2411 | /// Determine the linkage and visibility of this type. | ||||||||
2412 | LinkageInfo getLinkageAndVisibility() const; | ||||||||
2413 | |||||||||
2414 | /// True if the computed linkage is valid. Used for consistency | ||||||||
2415 | /// checking. Should always return true. | ||||||||
2416 | bool isLinkageValid() const; | ||||||||
2417 | |||||||||
2418 | /// Determine the nullability of the given type. | ||||||||
2419 | /// | ||||||||
2420 | /// Note that nullability is only captured as sugar within the type | ||||||||
2421 | /// system, not as part of the canonical type, so nullability will | ||||||||
2422 | /// be lost by canonicalization and desugaring. | ||||||||
2423 | Optional<NullabilityKind> getNullability(const ASTContext &context) const; | ||||||||
2424 | |||||||||
2425 | /// Determine whether the given type can have a nullability | ||||||||
2426 | /// specifier applied to it, i.e., if it is any kind of pointer type. | ||||||||
2427 | /// | ||||||||
2428 | /// \param ResultIfUnknown The value to return if we don't yet know whether | ||||||||
2429 | /// this type can have nullability because it is dependent. | ||||||||
2430 | bool canHaveNullability(bool ResultIfUnknown = true) const; | ||||||||
2431 | |||||||||
2432 | /// Retrieve the set of substitutions required when accessing a member | ||||||||
2433 | /// of the Objective-C receiver type that is declared in the given context. | ||||||||
2434 | /// | ||||||||
2435 | /// \c *this is the type of the object we're operating on, e.g., the | ||||||||
2436 | /// receiver for a message send or the base of a property access, and is | ||||||||
2437 | /// expected to be of some object or object pointer type. | ||||||||
2438 | /// | ||||||||
2439 | /// \param dc The declaration context for which we are building up a | ||||||||
2440 | /// substitution mapping, which should be an Objective-C class, extension, | ||||||||
2441 | /// category, or method within. | ||||||||
2442 | /// | ||||||||
2443 | /// \returns an array of type arguments that can be substituted for | ||||||||
2444 | /// the type parameters of the given declaration context in any type described | ||||||||
2445 | /// within that context, or an empty optional to indicate that no | ||||||||
2446 | /// substitution is required. | ||||||||
2447 | Optional<ArrayRef<QualType>> | ||||||||
2448 | getObjCSubstitutions(const DeclContext *dc) const; | ||||||||
2449 | |||||||||
2450 | /// Determines if this is an ObjC interface type that may accept type | ||||||||
2451 | /// parameters. | ||||||||
2452 | bool acceptsObjCTypeParams() const; | ||||||||
2453 | |||||||||
2454 | const char *getTypeClassName() const; | ||||||||
2455 | |||||||||
2456 | QualType getCanonicalTypeInternal() const { | ||||||||
2457 | return CanonicalType; | ||||||||
2458 | } | ||||||||
2459 | |||||||||
2460 | CanQualType getCanonicalTypeUnqualified() const; // in CanonicalType.h | ||||||||
2461 | void dump() const; | ||||||||
2462 | void dump(llvm::raw_ostream &OS, const ASTContext &Context) const; | ||||||||
2463 | }; | ||||||||
2464 | |||||||||
2465 | /// This will check for a TypedefType by removing any existing sugar | ||||||||
2466 | /// until it reaches a TypedefType or a non-sugared type. | ||||||||
2467 | template <> const TypedefType *Type::getAs() const; | ||||||||
2468 | |||||||||
2469 | /// This will check for a TemplateSpecializationType by removing any | ||||||||
2470 | /// existing sugar until it reaches a TemplateSpecializationType or a | ||||||||
2471 | /// non-sugared type. | ||||||||
2472 | template <> const TemplateSpecializationType *Type::getAs() const; | ||||||||
2473 | |||||||||
2474 | /// This will check for an AttributedType by removing any existing sugar | ||||||||
2475 | /// until it reaches an AttributedType or a non-sugared type. | ||||||||
2476 | template <> const AttributedType *Type::getAs() const; | ||||||||
2477 | |||||||||
2478 | // We can do canonical leaf types faster, because we don't have to | ||||||||
2479 | // worry about preserving child type decoration. | ||||||||
2480 | #define TYPE(Class, Base) | ||||||||
2481 | #define LEAF_TYPE(Class) \ | ||||||||
2482 | template <> inline const Class##Type *Type::getAs() const { \ | ||||||||
2483 | return dyn_cast<Class##Type>(CanonicalType); \ | ||||||||
2484 | } \ | ||||||||
2485 | template <> inline const Class##Type *Type::castAs() const { \ | ||||||||
2486 | return cast<Class##Type>(CanonicalType); \ | ||||||||
2487 | } | ||||||||
2488 | #include "clang/AST/TypeNodes.inc" | ||||||||
2489 | |||||||||
2490 | /// This class is used for builtin types like 'int'. Builtin | ||||||||
2491 | /// types are always canonical and have a literal name field. | ||||||||
2492 | class BuiltinType : public Type { | ||||||||
2493 | public: | ||||||||
2494 | enum Kind { | ||||||||
2495 | // OpenCL image types | ||||||||
2496 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) Id, | ||||||||
2497 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
2498 | // OpenCL extension types | ||||||||
2499 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) Id, | ||||||||
2500 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
2501 | // SVE Types | ||||||||
2502 | #define SVE_TYPE(Name, Id, SingletonId) Id, | ||||||||
2503 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||
2504 | // PPC MMA Types | ||||||||
2505 | #define PPC_VECTOR_TYPE(Name, Id, Size) Id, | ||||||||
2506 | #include "clang/Basic/PPCTypes.def" | ||||||||
2507 | // RVV Types | ||||||||
2508 | #define RVV_TYPE(Name, Id, SingletonId) Id, | ||||||||
2509 | #include "clang/Basic/RISCVVTypes.def" | ||||||||
2510 | // All other builtin types | ||||||||
2511 | #define BUILTIN_TYPE(Id, SingletonId) Id, | ||||||||
2512 | #define LAST_BUILTIN_TYPE(Id) LastKind = Id | ||||||||
2513 | #include "clang/AST/BuiltinTypes.def" | ||||||||
2514 | }; | ||||||||
2515 | |||||||||
2516 | private: | ||||||||
2517 | friend class ASTContext; // ASTContext creates these. | ||||||||
2518 | |||||||||
2519 | BuiltinType(Kind K) | ||||||||
2520 | : Type(Builtin, QualType(), | ||||||||
2521 | K == Dependent ? TypeDependence::DependentInstantiation | ||||||||
2522 | : TypeDependence::None) { | ||||||||
2523 | BuiltinTypeBits.Kind = K; | ||||||||
2524 | } | ||||||||
2525 | |||||||||
2526 | public: | ||||||||
2527 | Kind getKind() const { return static_cast<Kind>(BuiltinTypeBits.Kind); } | ||||||||
2528 | StringRef getName(const PrintingPolicy &Policy) const; | ||||||||
2529 | |||||||||
2530 | const char *getNameAsCString(const PrintingPolicy &Policy) const { | ||||||||
2531 | // The StringRef is null-terminated. | ||||||||
2532 | StringRef str = getName(Policy); | ||||||||
2533 | assert(!str.empty() && str.data()[str.size()] == '\0')(static_cast <bool> (!str.empty() && str.data() [str.size()] == '\0') ? void (0) : __assert_fail ("!str.empty() && str.data()[str.size()] == '\\0'" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 2533, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2534 | return str.data(); | ||||||||
2535 | } | ||||||||
2536 | |||||||||
2537 | bool isSugared() const { return false; } | ||||||||
2538 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2539 | |||||||||
2540 | bool isInteger() const { | ||||||||
2541 | return getKind() >= Bool && getKind() <= Int128; | ||||||||
2542 | } | ||||||||
2543 | |||||||||
2544 | bool isSignedInteger() const { | ||||||||
2545 | return getKind() >= Char_S && getKind() <= Int128; | ||||||||
2546 | } | ||||||||
2547 | |||||||||
2548 | bool isUnsignedInteger() const { | ||||||||
2549 | return getKind() >= Bool && getKind() <= UInt128; | ||||||||
2550 | } | ||||||||
2551 | |||||||||
2552 | bool isFloatingPoint() const { | ||||||||
2553 | return getKind() >= Half && getKind() <= Float128; | ||||||||
2554 | } | ||||||||
2555 | |||||||||
2556 | /// Determines whether the given kind corresponds to a placeholder type. | ||||||||
2557 | static bool isPlaceholderTypeKind(Kind K) { | ||||||||
2558 | return K >= Overload; | ||||||||
2559 | } | ||||||||
2560 | |||||||||
2561 | /// Determines whether this type is a placeholder type, i.e. a type | ||||||||
2562 | /// which cannot appear in arbitrary positions in a fully-formed | ||||||||
2563 | /// expression. | ||||||||
2564 | bool isPlaceholderType() const { | ||||||||
2565 | return isPlaceholderTypeKind(getKind()); | ||||||||
2566 | } | ||||||||
2567 | |||||||||
2568 | /// Determines whether this type is a placeholder type other than | ||||||||
2569 | /// Overload. Most placeholder types require only syntactic | ||||||||
2570 | /// information about their context in order to be resolved (e.g. | ||||||||
2571 | /// whether it is a call expression), which means they can (and | ||||||||
2572 | /// should) be resolved in an earlier "phase" of analysis. | ||||||||
2573 | /// Overload expressions sometimes pick up further information | ||||||||
2574 | /// from their context, like whether the context expects a | ||||||||
2575 | /// specific function-pointer type, and so frequently need | ||||||||
2576 | /// special treatment. | ||||||||
2577 | bool isNonOverloadPlaceholderType() const { | ||||||||
2578 | return getKind() > Overload; | ||||||||
2579 | } | ||||||||
2580 | |||||||||
2581 | static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } | ||||||||
2582 | }; | ||||||||
2583 | |||||||||
2584 | /// Complex values, per C99 6.2.5p11. This supports the C99 complex | ||||||||
2585 | /// types (_Complex float etc) as well as the GCC integer complex extensions. | ||||||||
2586 | class ComplexType : public Type, public llvm::FoldingSetNode { | ||||||||
2587 | friend class ASTContext; // ASTContext creates these. | ||||||||
2588 | |||||||||
2589 | QualType ElementType; | ||||||||
2590 | |||||||||
2591 | ComplexType(QualType Element, QualType CanonicalPtr) | ||||||||
2592 | : Type(Complex, CanonicalPtr, Element->getDependence()), | ||||||||
2593 | ElementType(Element) {} | ||||||||
2594 | |||||||||
2595 | public: | ||||||||
2596 | QualType getElementType() const { return ElementType; } | ||||||||
2597 | |||||||||
2598 | bool isSugared() const { return false; } | ||||||||
2599 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2600 | |||||||||
2601 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2602 | Profile(ID, getElementType()); | ||||||||
2603 | } | ||||||||
2604 | |||||||||
2605 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { | ||||||||
2606 | ID.AddPointer(Element.getAsOpaquePtr()); | ||||||||
2607 | } | ||||||||
2608 | |||||||||
2609 | static bool classof(const Type *T) { return T->getTypeClass() == Complex; } | ||||||||
2610 | }; | ||||||||
2611 | |||||||||
2612 | /// Sugar for parentheses used when specifying types. | ||||||||
2613 | class ParenType : public Type, public llvm::FoldingSetNode { | ||||||||
2614 | friend class ASTContext; // ASTContext creates these. | ||||||||
2615 | |||||||||
2616 | QualType Inner; | ||||||||
2617 | |||||||||
2618 | ParenType(QualType InnerType, QualType CanonType) | ||||||||
2619 | : Type(Paren, CanonType, InnerType->getDependence()), Inner(InnerType) {} | ||||||||
2620 | |||||||||
2621 | public: | ||||||||
2622 | QualType getInnerType() const { return Inner; } | ||||||||
2623 | |||||||||
2624 | bool isSugared() const { return true; } | ||||||||
2625 | QualType desugar() const { return getInnerType(); } | ||||||||
2626 | |||||||||
2627 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2628 | Profile(ID, getInnerType()); | ||||||||
2629 | } | ||||||||
2630 | |||||||||
2631 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Inner) { | ||||||||
2632 | Inner.Profile(ID); | ||||||||
2633 | } | ||||||||
2634 | |||||||||
2635 | static bool classof(const Type *T) { return T->getTypeClass() == Paren; } | ||||||||
2636 | }; | ||||||||
2637 | |||||||||
2638 | /// PointerType - C99 6.7.5.1 - Pointer Declarators. | ||||||||
2639 | class PointerType : public Type, public llvm::FoldingSetNode { | ||||||||
2640 | friend class ASTContext; // ASTContext creates these. | ||||||||
2641 | |||||||||
2642 | QualType PointeeType; | ||||||||
2643 | |||||||||
2644 | PointerType(QualType Pointee, QualType CanonicalPtr) | ||||||||
2645 | : Type(Pointer, CanonicalPtr, Pointee->getDependence()), | ||||||||
2646 | PointeeType(Pointee) {} | ||||||||
2647 | |||||||||
2648 | public: | ||||||||
2649 | QualType getPointeeType() const { return PointeeType; } | ||||||||
2650 | |||||||||
2651 | bool isSugared() const { return false; } | ||||||||
2652 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2653 | |||||||||
2654 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2655 | Profile(ID, getPointeeType()); | ||||||||
2656 | } | ||||||||
2657 | |||||||||
2658 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { | ||||||||
2659 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||
2660 | } | ||||||||
2661 | |||||||||
2662 | static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } | ||||||||
2663 | }; | ||||||||
2664 | |||||||||
2665 | /// Represents a type which was implicitly adjusted by the semantic | ||||||||
2666 | /// engine for arbitrary reasons. For example, array and function types can | ||||||||
2667 | /// decay, and function types can have their calling conventions adjusted. | ||||||||
2668 | class AdjustedType : public Type, public llvm::FoldingSetNode { | ||||||||
2669 | QualType OriginalTy; | ||||||||
2670 | QualType AdjustedTy; | ||||||||
2671 | |||||||||
2672 | protected: | ||||||||
2673 | friend class ASTContext; // ASTContext creates these. | ||||||||
2674 | |||||||||
2675 | AdjustedType(TypeClass TC, QualType OriginalTy, QualType AdjustedTy, | ||||||||
2676 | QualType CanonicalPtr) | ||||||||
2677 | : Type(TC, CanonicalPtr, OriginalTy->getDependence()), | ||||||||
2678 | OriginalTy(OriginalTy), AdjustedTy(AdjustedTy) {} | ||||||||
2679 | |||||||||
2680 | public: | ||||||||
2681 | QualType getOriginalType() const { return OriginalTy; } | ||||||||
2682 | QualType getAdjustedType() const { return AdjustedTy; } | ||||||||
2683 | |||||||||
2684 | bool isSugared() const { return true; } | ||||||||
2685 | QualType desugar() const { return AdjustedTy; } | ||||||||
2686 | |||||||||
2687 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2688 | Profile(ID, OriginalTy, AdjustedTy); | ||||||||
2689 | } | ||||||||
2690 | |||||||||
2691 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Orig, QualType New) { | ||||||||
2692 | ID.AddPointer(Orig.getAsOpaquePtr()); | ||||||||
2693 | ID.AddPointer(New.getAsOpaquePtr()); | ||||||||
2694 | } | ||||||||
2695 | |||||||||
2696 | static bool classof(const Type *T) { | ||||||||
2697 | return T->getTypeClass() == Adjusted || T->getTypeClass() == Decayed; | ||||||||
2698 | } | ||||||||
2699 | }; | ||||||||
2700 | |||||||||
2701 | /// Represents a pointer type decayed from an array or function type. | ||||||||
2702 | class DecayedType : public AdjustedType { | ||||||||
2703 | friend class ASTContext; // ASTContext creates these. | ||||||||
2704 | |||||||||
2705 | inline | ||||||||
2706 | DecayedType(QualType OriginalType, QualType Decayed, QualType Canonical); | ||||||||
2707 | |||||||||
2708 | public: | ||||||||
2709 | QualType getDecayedType() const { return getAdjustedType(); } | ||||||||
2710 | |||||||||
2711 | inline QualType getPointeeType() const; | ||||||||
2712 | |||||||||
2713 | static bool classof(const Type *T) { return T->getTypeClass() == Decayed; } | ||||||||
2714 | }; | ||||||||
2715 | |||||||||
2716 | /// Pointer to a block type. | ||||||||
2717 | /// This type is to represent types syntactically represented as | ||||||||
2718 | /// "void (^)(int)", etc. Pointee is required to always be a function type. | ||||||||
2719 | class BlockPointerType : public Type, public llvm::FoldingSetNode { | ||||||||
2720 | friend class ASTContext; // ASTContext creates these. | ||||||||
2721 | |||||||||
2722 | // Block is some kind of pointer type | ||||||||
2723 | QualType PointeeType; | ||||||||
2724 | |||||||||
2725 | BlockPointerType(QualType Pointee, QualType CanonicalCls) | ||||||||
2726 | : Type(BlockPointer, CanonicalCls, Pointee->getDependence()), | ||||||||
2727 | PointeeType(Pointee) {} | ||||||||
2728 | |||||||||
2729 | public: | ||||||||
2730 | // Get the pointee type. Pointee is required to always be a function type. | ||||||||
2731 | QualType getPointeeType() const { return PointeeType; } | ||||||||
2732 | |||||||||
2733 | bool isSugared() const { return false; } | ||||||||
2734 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2735 | |||||||||
2736 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2737 | Profile(ID, getPointeeType()); | ||||||||
2738 | } | ||||||||
2739 | |||||||||
2740 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { | ||||||||
2741 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||
2742 | } | ||||||||
2743 | |||||||||
2744 | static bool classof(const Type *T) { | ||||||||
2745 | return T->getTypeClass() == BlockPointer; | ||||||||
2746 | } | ||||||||
2747 | }; | ||||||||
2748 | |||||||||
2749 | /// Base for LValueReferenceType and RValueReferenceType | ||||||||
2750 | class ReferenceType : public Type, public llvm::FoldingSetNode { | ||||||||
2751 | QualType PointeeType; | ||||||||
2752 | |||||||||
2753 | protected: | ||||||||
2754 | ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef, | ||||||||
2755 | bool SpelledAsLValue) | ||||||||
2756 | : Type(tc, CanonicalRef, Referencee->getDependence()), | ||||||||
2757 | PointeeType(Referencee) { | ||||||||
2758 | ReferenceTypeBits.SpelledAsLValue = SpelledAsLValue; | ||||||||
2759 | ReferenceTypeBits.InnerRef = Referencee->isReferenceType(); | ||||||||
2760 | } | ||||||||
2761 | |||||||||
2762 | public: | ||||||||
2763 | bool isSpelledAsLValue() const { return ReferenceTypeBits.SpelledAsLValue; } | ||||||||
2764 | bool isInnerRef() const { return ReferenceTypeBits.InnerRef; } | ||||||||
2765 | |||||||||
2766 | QualType getPointeeTypeAsWritten() const { return PointeeType; } | ||||||||
2767 | |||||||||
2768 | QualType getPointeeType() const { | ||||||||
2769 | // FIXME: this might strip inner qualifiers; okay? | ||||||||
2770 | const ReferenceType *T = this; | ||||||||
2771 | while (T->isInnerRef()) | ||||||||
2772 | T = T->PointeeType->castAs<ReferenceType>(); | ||||||||
2773 | return T->PointeeType; | ||||||||
2774 | } | ||||||||
2775 | |||||||||
2776 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2777 | Profile(ID, PointeeType, isSpelledAsLValue()); | ||||||||
2778 | } | ||||||||
2779 | |||||||||
2780 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
2781 | QualType Referencee, | ||||||||
2782 | bool SpelledAsLValue) { | ||||||||
2783 | ID.AddPointer(Referencee.getAsOpaquePtr()); | ||||||||
2784 | ID.AddBoolean(SpelledAsLValue); | ||||||||
2785 | } | ||||||||
2786 | |||||||||
2787 | static bool classof(const Type *T) { | ||||||||
2788 | return T->getTypeClass() == LValueReference || | ||||||||
2789 | T->getTypeClass() == RValueReference; | ||||||||
2790 | } | ||||||||
2791 | }; | ||||||||
2792 | |||||||||
2793 | /// An lvalue reference type, per C++11 [dcl.ref]. | ||||||||
2794 | class LValueReferenceType : public ReferenceType { | ||||||||
2795 | friend class ASTContext; // ASTContext creates these | ||||||||
2796 | |||||||||
2797 | LValueReferenceType(QualType Referencee, QualType CanonicalRef, | ||||||||
2798 | bool SpelledAsLValue) | ||||||||
2799 | : ReferenceType(LValueReference, Referencee, CanonicalRef, | ||||||||
2800 | SpelledAsLValue) {} | ||||||||
2801 | |||||||||
2802 | public: | ||||||||
2803 | bool isSugared() const { return false; } | ||||||||
2804 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2805 | |||||||||
2806 | static bool classof(const Type *T) { | ||||||||
2807 | return T->getTypeClass() == LValueReference; | ||||||||
2808 | } | ||||||||
2809 | }; | ||||||||
2810 | |||||||||
2811 | /// An rvalue reference type, per C++11 [dcl.ref]. | ||||||||
2812 | class RValueReferenceType : public ReferenceType { | ||||||||
2813 | friend class ASTContext; // ASTContext creates these | ||||||||
2814 | |||||||||
2815 | RValueReferenceType(QualType Referencee, QualType CanonicalRef) | ||||||||
2816 | : ReferenceType(RValueReference, Referencee, CanonicalRef, false) {} | ||||||||
2817 | |||||||||
2818 | public: | ||||||||
2819 | bool isSugared() const { return false; } | ||||||||
2820 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2821 | |||||||||
2822 | static bool classof(const Type *T) { | ||||||||
2823 | return T->getTypeClass() == RValueReference; | ||||||||
2824 | } | ||||||||
2825 | }; | ||||||||
2826 | |||||||||
2827 | /// A pointer to member type per C++ 8.3.3 - Pointers to members. | ||||||||
2828 | /// | ||||||||
2829 | /// This includes both pointers to data members and pointer to member functions. | ||||||||
2830 | class MemberPointerType : public Type, public llvm::FoldingSetNode { | ||||||||
2831 | friend class ASTContext; // ASTContext creates these. | ||||||||
2832 | |||||||||
2833 | QualType PointeeType; | ||||||||
2834 | |||||||||
2835 | /// The class of which the pointee is a member. Must ultimately be a | ||||||||
2836 | /// RecordType, but could be a typedef or a template parameter too. | ||||||||
2837 | const Type *Class; | ||||||||
2838 | |||||||||
2839 | MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) | ||||||||
2840 | : Type(MemberPointer, CanonicalPtr, | ||||||||
2841 | (Cls->getDependence() & ~TypeDependence::VariablyModified) | | ||||||||
2842 | Pointee->getDependence()), | ||||||||
2843 | PointeeType(Pointee), Class(Cls) {} | ||||||||
2844 | |||||||||
2845 | public: | ||||||||
2846 | QualType getPointeeType() const { return PointeeType; } | ||||||||
2847 | |||||||||
2848 | /// Returns true if the member type (i.e. the pointee type) is a | ||||||||
2849 | /// function type rather than a data-member type. | ||||||||
2850 | bool isMemberFunctionPointer() const { | ||||||||
2851 | return PointeeType->isFunctionProtoType(); | ||||||||
2852 | } | ||||||||
2853 | |||||||||
2854 | /// Returns true if the member type (i.e. the pointee type) is a | ||||||||
2855 | /// data type rather than a function type. | ||||||||
2856 | bool isMemberDataPointer() const { | ||||||||
2857 | return !PointeeType->isFunctionProtoType(); | ||||||||
2858 | } | ||||||||
2859 | |||||||||
2860 | const Type *getClass() const { return Class; } | ||||||||
2861 | CXXRecordDecl *getMostRecentCXXRecordDecl() const; | ||||||||
2862 | |||||||||
2863 | bool isSugared() const { return false; } | ||||||||
2864 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2865 | |||||||||
2866 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
2867 | Profile(ID, getPointeeType(), getClass()); | ||||||||
2868 | } | ||||||||
2869 | |||||||||
2870 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, | ||||||||
2871 | const Type *Class) { | ||||||||
2872 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||
2873 | ID.AddPointer(Class); | ||||||||
2874 | } | ||||||||
2875 | |||||||||
2876 | static bool classof(const Type *T) { | ||||||||
2877 | return T->getTypeClass() == MemberPointer; | ||||||||
2878 | } | ||||||||
2879 | }; | ||||||||
2880 | |||||||||
2881 | /// Represents an array type, per C99 6.7.5.2 - Array Declarators. | ||||||||
2882 | class ArrayType : public Type, public llvm::FoldingSetNode { | ||||||||
2883 | public: | ||||||||
2884 | /// Capture whether this is a normal array (e.g. int X[4]) | ||||||||
2885 | /// an array with a static size (e.g. int X[static 4]), or an array | ||||||||
2886 | /// with a star size (e.g. int X[*]). | ||||||||
2887 | /// 'static' is only allowed on function parameters. | ||||||||
2888 | enum ArraySizeModifier { | ||||||||
2889 | Normal, Static, Star | ||||||||
2890 | }; | ||||||||
2891 | |||||||||
2892 | private: | ||||||||
2893 | /// The element type of the array. | ||||||||
2894 | QualType ElementType; | ||||||||
2895 | |||||||||
2896 | protected: | ||||||||
2897 | friend class ASTContext; // ASTContext creates these. | ||||||||
2898 | |||||||||
2899 | ArrayType(TypeClass tc, QualType et, QualType can, ArraySizeModifier sm, | ||||||||
2900 | unsigned tq, const Expr *sz = nullptr); | ||||||||
2901 | |||||||||
2902 | public: | ||||||||
2903 | QualType getElementType() const { return ElementType; } | ||||||||
2904 | |||||||||
2905 | ArraySizeModifier getSizeModifier() const { | ||||||||
2906 | return ArraySizeModifier(ArrayTypeBits.SizeModifier); | ||||||||
2907 | } | ||||||||
2908 | |||||||||
2909 | Qualifiers getIndexTypeQualifiers() const { | ||||||||
2910 | return Qualifiers::fromCVRMask(getIndexTypeCVRQualifiers()); | ||||||||
2911 | } | ||||||||
2912 | |||||||||
2913 | unsigned getIndexTypeCVRQualifiers() const { | ||||||||
2914 | return ArrayTypeBits.IndexTypeQuals; | ||||||||
2915 | } | ||||||||
2916 | |||||||||
2917 | static bool classof(const Type *T) { | ||||||||
2918 | return T->getTypeClass() == ConstantArray || | ||||||||
2919 | T->getTypeClass() == VariableArray || | ||||||||
2920 | T->getTypeClass() == IncompleteArray || | ||||||||
2921 | T->getTypeClass() == DependentSizedArray; | ||||||||
2922 | } | ||||||||
2923 | }; | ||||||||
2924 | |||||||||
2925 | /// Represents the canonical version of C arrays with a specified constant size. | ||||||||
2926 | /// For example, the canonical type for 'int A[4 + 4*100]' is a | ||||||||
2927 | /// ConstantArrayType where the element type is 'int' and the size is 404. | ||||||||
2928 | class ConstantArrayType final | ||||||||
2929 | : public ArrayType, | ||||||||
2930 | private llvm::TrailingObjects<ConstantArrayType, const Expr *> { | ||||||||
2931 | friend class ASTContext; // ASTContext creates these. | ||||||||
2932 | friend TrailingObjects; | ||||||||
2933 | |||||||||
2934 | llvm::APInt Size; // Allows us to unique the type. | ||||||||
2935 | |||||||||
2936 | ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, | ||||||||
2937 | const Expr *sz, ArraySizeModifier sm, unsigned tq) | ||||||||
2938 | : ArrayType(ConstantArray, et, can, sm, tq, sz), Size(size) { | ||||||||
2939 | ConstantArrayTypeBits.HasStoredSizeExpr = sz != nullptr; | ||||||||
2940 | if (ConstantArrayTypeBits.HasStoredSizeExpr) { | ||||||||
2941 | assert(!can.isNull() && "canonical constant array should not have size")(static_cast <bool> (!can.isNull() && "canonical constant array should not have size" ) ? void (0) : __assert_fail ("!can.isNull() && \"canonical constant array should not have size\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 2941, __extension__ __PRETTY_FUNCTION__)); | ||||||||
2942 | *getTrailingObjects<const Expr*>() = sz; | ||||||||
2943 | } | ||||||||
2944 | } | ||||||||
2945 | |||||||||
2946 | unsigned numTrailingObjects(OverloadToken<const Expr*>) const { | ||||||||
2947 | return ConstantArrayTypeBits.HasStoredSizeExpr; | ||||||||
2948 | } | ||||||||
2949 | |||||||||
2950 | public: | ||||||||
2951 | const llvm::APInt &getSize() const { return Size; } | ||||||||
2952 | const Expr *getSizeExpr() const { | ||||||||
2953 | return ConstantArrayTypeBits.HasStoredSizeExpr | ||||||||
2954 | ? *getTrailingObjects<const Expr *>() | ||||||||
2955 | : nullptr; | ||||||||
2956 | } | ||||||||
2957 | bool isSugared() const { return false; } | ||||||||
2958 | QualType desugar() const { return QualType(this, 0); } | ||||||||
2959 | |||||||||
2960 | /// Determine the number of bits required to address a member of | ||||||||
2961 | // an array with the given element type and number of elements. | ||||||||
2962 | static unsigned getNumAddressingBits(const ASTContext &Context, | ||||||||
2963 | QualType ElementType, | ||||||||
2964 | const llvm::APInt &NumElements); | ||||||||
2965 | |||||||||
2966 | /// Determine the maximum number of active bits that an array's size | ||||||||
2967 | /// can require, which limits the maximum size of the array. | ||||||||
2968 | static unsigned getMaxSizeBits(const ASTContext &Context); | ||||||||
2969 | |||||||||
2970 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { | ||||||||
2971 | Profile(ID, Ctx, getElementType(), getSize(), getSizeExpr(), | ||||||||
2972 | getSizeModifier(), getIndexTypeCVRQualifiers()); | ||||||||
2973 | } | ||||||||
2974 | |||||||||
2975 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx, | ||||||||
2976 | QualType ET, const llvm::APInt &ArraySize, | ||||||||
2977 | const Expr *SizeExpr, ArraySizeModifier SizeMod, | ||||||||
2978 | unsigned TypeQuals); | ||||||||
2979 | |||||||||
2980 | static bool classof(const Type *T) { | ||||||||
2981 | return T->getTypeClass() == ConstantArray; | ||||||||
2982 | } | ||||||||
2983 | }; | ||||||||
2984 | |||||||||
2985 | /// Represents a C array with an unspecified size. For example 'int A[]' has | ||||||||
2986 | /// an IncompleteArrayType where the element type is 'int' and the size is | ||||||||
2987 | /// unspecified. | ||||||||
2988 | class IncompleteArrayType : public ArrayType { | ||||||||
2989 | friend class ASTContext; // ASTContext creates these. | ||||||||
2990 | |||||||||
2991 | IncompleteArrayType(QualType et, QualType can, | ||||||||
2992 | ArraySizeModifier sm, unsigned tq) | ||||||||
2993 | : ArrayType(IncompleteArray, et, can, sm, tq) {} | ||||||||
2994 | |||||||||
2995 | public: | ||||||||
2996 | friend class StmtIteratorBase; | ||||||||
2997 | |||||||||
2998 | bool isSugared() const { return false; } | ||||||||
2999 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3000 | |||||||||
3001 | static bool classof(const Type *T) { | ||||||||
3002 | return T->getTypeClass() == IncompleteArray; | ||||||||
3003 | } | ||||||||
3004 | |||||||||
3005 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3006 | Profile(ID, getElementType(), getSizeModifier(), | ||||||||
3007 | getIndexTypeCVRQualifiers()); | ||||||||
3008 | } | ||||||||
3009 | |||||||||
3010 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, | ||||||||
3011 | ArraySizeModifier SizeMod, unsigned TypeQuals) { | ||||||||
3012 | ID.AddPointer(ET.getAsOpaquePtr()); | ||||||||
3013 | ID.AddInteger(SizeMod); | ||||||||
3014 | ID.AddInteger(TypeQuals); | ||||||||
3015 | } | ||||||||
3016 | }; | ||||||||
3017 | |||||||||
3018 | /// Represents a C array with a specified size that is not an | ||||||||
3019 | /// integer-constant-expression. For example, 'int s[x+foo()]'. | ||||||||
3020 | /// Since the size expression is an arbitrary expression, we store it as such. | ||||||||
3021 | /// | ||||||||
3022 | /// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and | ||||||||
3023 | /// should not be: two lexically equivalent variable array types could mean | ||||||||
3024 | /// different things, for example, these variables do not have the same type | ||||||||
3025 | /// dynamically: | ||||||||
3026 | /// | ||||||||
3027 | /// void foo(int x) { | ||||||||
3028 | /// int Y[x]; | ||||||||
3029 | /// ++x; | ||||||||
3030 | /// int Z[x]; | ||||||||
3031 | /// } | ||||||||
3032 | class VariableArrayType : public ArrayType { | ||||||||
3033 | friend class ASTContext; // ASTContext creates these. | ||||||||
3034 | |||||||||
3035 | /// An assignment-expression. VLA's are only permitted within | ||||||||
3036 | /// a function block. | ||||||||
3037 | Stmt *SizeExpr; | ||||||||
3038 | |||||||||
3039 | /// The range spanned by the left and right array brackets. | ||||||||
3040 | SourceRange Brackets; | ||||||||
3041 | |||||||||
3042 | VariableArrayType(QualType et, QualType can, Expr *e, | ||||||||
3043 | ArraySizeModifier sm, unsigned tq, | ||||||||
3044 | SourceRange brackets) | ||||||||
3045 | : ArrayType(VariableArray, et, can, sm, tq, e), | ||||||||
3046 | SizeExpr((Stmt*) e), Brackets(brackets) {} | ||||||||
3047 | |||||||||
3048 | public: | ||||||||
3049 | friend class StmtIteratorBase; | ||||||||
3050 | |||||||||
3051 | Expr *getSizeExpr() const { | ||||||||
3052 | // We use C-style casts instead of cast<> here because we do not wish | ||||||||
3053 | // to have a dependency of Type.h on Stmt.h/Expr.h. | ||||||||
3054 | return (Expr*) SizeExpr; | ||||||||
3055 | } | ||||||||
3056 | |||||||||
3057 | SourceRange getBracketsRange() const { return Brackets; } | ||||||||
3058 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } | ||||||||
3059 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } | ||||||||
3060 | |||||||||
3061 | bool isSugared() const { return false; } | ||||||||
3062 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3063 | |||||||||
3064 | static bool classof(const Type *T) { | ||||||||
3065 | return T->getTypeClass() == VariableArray; | ||||||||
3066 | } | ||||||||
3067 | |||||||||
3068 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3069 | llvm_unreachable("Cannot unique VariableArrayTypes.")::llvm::llvm_unreachable_internal("Cannot unique VariableArrayTypes." , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 3069); | ||||||||
3070 | } | ||||||||
3071 | }; | ||||||||
3072 | |||||||||
3073 | /// Represents an array type in C++ whose size is a value-dependent expression. | ||||||||
3074 | /// | ||||||||
3075 | /// For example: | ||||||||
3076 | /// \code | ||||||||
3077 | /// template<typename T, int Size> | ||||||||
3078 | /// class array { | ||||||||
3079 | /// T data[Size]; | ||||||||
3080 | /// }; | ||||||||
3081 | /// \endcode | ||||||||
3082 | /// | ||||||||
3083 | /// For these types, we won't actually know what the array bound is | ||||||||
3084 | /// until template instantiation occurs, at which point this will | ||||||||
3085 | /// become either a ConstantArrayType or a VariableArrayType. | ||||||||
3086 | class DependentSizedArrayType : public ArrayType { | ||||||||
3087 | friend class ASTContext; // ASTContext creates these. | ||||||||
3088 | |||||||||
3089 | const ASTContext &Context; | ||||||||
3090 | |||||||||
3091 | /// An assignment expression that will instantiate to the | ||||||||
3092 | /// size of the array. | ||||||||
3093 | /// | ||||||||
3094 | /// The expression itself might be null, in which case the array | ||||||||
3095 | /// type will have its size deduced from an initializer. | ||||||||
3096 | Stmt *SizeExpr; | ||||||||
3097 | |||||||||
3098 | /// The range spanned by the left and right array brackets. | ||||||||
3099 | SourceRange Brackets; | ||||||||
3100 | |||||||||
3101 | DependentSizedArrayType(const ASTContext &Context, QualType et, QualType can, | ||||||||
3102 | Expr *e, ArraySizeModifier sm, unsigned tq, | ||||||||
3103 | SourceRange brackets); | ||||||||
3104 | |||||||||
3105 | public: | ||||||||
3106 | friend class StmtIteratorBase; | ||||||||
3107 | |||||||||
3108 | Expr *getSizeExpr() const { | ||||||||
3109 | // We use C-style casts instead of cast<> here because we do not wish | ||||||||
3110 | // to have a dependency of Type.h on Stmt.h/Expr.h. | ||||||||
3111 | return (Expr*) SizeExpr; | ||||||||
3112 | } | ||||||||
3113 | |||||||||
3114 | SourceRange getBracketsRange() const { return Brackets; } | ||||||||
3115 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } | ||||||||
3116 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } | ||||||||
3117 | |||||||||
3118 | bool isSugared() const { return false; } | ||||||||
3119 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3120 | |||||||||
3121 | static bool classof(const Type *T) { | ||||||||
3122 | return T->getTypeClass() == DependentSizedArray; | ||||||||
3123 | } | ||||||||
3124 | |||||||||
3125 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3126 | Profile(ID, Context, getElementType(), | ||||||||
3127 | getSizeModifier(), getIndexTypeCVRQualifiers(), getSizeExpr()); | ||||||||
3128 | } | ||||||||
3129 | |||||||||
3130 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
3131 | QualType ET, ArraySizeModifier SizeMod, | ||||||||
3132 | unsigned TypeQuals, Expr *E); | ||||||||
3133 | }; | ||||||||
3134 | |||||||||
3135 | /// Represents an extended address space qualifier where the input address space | ||||||||
3136 | /// value is dependent. Non-dependent address spaces are not represented with a | ||||||||
3137 | /// special Type subclass; they are stored on an ExtQuals node as part of a QualType. | ||||||||
3138 | /// | ||||||||
3139 | /// For example: | ||||||||
3140 | /// \code | ||||||||
3141 | /// template<typename T, int AddrSpace> | ||||||||
3142 | /// class AddressSpace { | ||||||||
3143 | /// typedef T __attribute__((address_space(AddrSpace))) type; | ||||||||
3144 | /// } | ||||||||
3145 | /// \endcode | ||||||||
3146 | class DependentAddressSpaceType : public Type, public llvm::FoldingSetNode { | ||||||||
3147 | friend class ASTContext; | ||||||||
3148 | |||||||||
3149 | const ASTContext &Context; | ||||||||
3150 | Expr *AddrSpaceExpr; | ||||||||
3151 | QualType PointeeType; | ||||||||
3152 | SourceLocation loc; | ||||||||
3153 | |||||||||
3154 | DependentAddressSpaceType(const ASTContext &Context, QualType PointeeType, | ||||||||
3155 | QualType can, Expr *AddrSpaceExpr, | ||||||||
3156 | SourceLocation loc); | ||||||||
3157 | |||||||||
3158 | public: | ||||||||
3159 | Expr *getAddrSpaceExpr() const { return AddrSpaceExpr; } | ||||||||
3160 | QualType getPointeeType() const { return PointeeType; } | ||||||||
3161 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||
3162 | |||||||||
3163 | bool isSugared() const { return false; } | ||||||||
3164 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3165 | |||||||||
3166 | static bool classof(const Type *T) { | ||||||||
3167 | return T->getTypeClass() == DependentAddressSpace; | ||||||||
3168 | } | ||||||||
3169 | |||||||||
3170 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3171 | Profile(ID, Context, getPointeeType(), getAddrSpaceExpr()); | ||||||||
3172 | } | ||||||||
3173 | |||||||||
3174 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
3175 | QualType PointeeType, Expr *AddrSpaceExpr); | ||||||||
3176 | }; | ||||||||
3177 | |||||||||
3178 | /// Represents an extended vector type where either the type or size is | ||||||||
3179 | /// dependent. | ||||||||
3180 | /// | ||||||||
3181 | /// For example: | ||||||||
3182 | /// \code | ||||||||
3183 | /// template<typename T, int Size> | ||||||||
3184 | /// class vector { | ||||||||
3185 | /// typedef T __attribute__((ext_vector_type(Size))) type; | ||||||||
3186 | /// } | ||||||||
3187 | /// \endcode | ||||||||
3188 | class DependentSizedExtVectorType : public Type, public llvm::FoldingSetNode { | ||||||||
3189 | friend class ASTContext; | ||||||||
3190 | |||||||||
3191 | const ASTContext &Context; | ||||||||
3192 | Expr *SizeExpr; | ||||||||
3193 | |||||||||
3194 | /// The element type of the array. | ||||||||
3195 | QualType ElementType; | ||||||||
3196 | |||||||||
3197 | SourceLocation loc; | ||||||||
3198 | |||||||||
3199 | DependentSizedExtVectorType(const ASTContext &Context, QualType ElementType, | ||||||||
3200 | QualType can, Expr *SizeExpr, SourceLocation loc); | ||||||||
3201 | |||||||||
3202 | public: | ||||||||
3203 | Expr *getSizeExpr() const { return SizeExpr; } | ||||||||
3204 | QualType getElementType() const { return ElementType; } | ||||||||
3205 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||
3206 | |||||||||
3207 | bool isSugared() const { return false; } | ||||||||
3208 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3209 | |||||||||
3210 | static bool classof(const Type *T) { | ||||||||
3211 | return T->getTypeClass() == DependentSizedExtVector; | ||||||||
3212 | } | ||||||||
3213 | |||||||||
3214 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3215 | Profile(ID, Context, getElementType(), getSizeExpr()); | ||||||||
3216 | } | ||||||||
3217 | |||||||||
3218 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
3219 | QualType ElementType, Expr *SizeExpr); | ||||||||
3220 | }; | ||||||||
3221 | |||||||||
3222 | |||||||||
3223 | /// Represents a GCC generic vector type. This type is created using | ||||||||
3224 | /// __attribute__((vector_size(n)), where "n" specifies the vector size in | ||||||||
3225 | /// bytes; or from an Altivec __vector or vector declaration. | ||||||||
3226 | /// Since the constructor takes the number of vector elements, the | ||||||||
3227 | /// client is responsible for converting the size into the number of elements. | ||||||||
3228 | class VectorType : public Type, public llvm::FoldingSetNode { | ||||||||
3229 | public: | ||||||||
3230 | enum VectorKind { | ||||||||
3231 | /// not a target-specific vector type | ||||||||
3232 | GenericVector, | ||||||||
3233 | |||||||||
3234 | /// is AltiVec vector | ||||||||
3235 | AltiVecVector, | ||||||||
3236 | |||||||||
3237 | /// is AltiVec 'vector Pixel' | ||||||||
3238 | AltiVecPixel, | ||||||||
3239 | |||||||||
3240 | /// is AltiVec 'vector bool ...' | ||||||||
3241 | AltiVecBool, | ||||||||
3242 | |||||||||
3243 | /// is ARM Neon vector | ||||||||
3244 | NeonVector, | ||||||||
3245 | |||||||||
3246 | /// is ARM Neon polynomial vector | ||||||||
3247 | NeonPolyVector, | ||||||||
3248 | |||||||||
3249 | /// is AArch64 SVE fixed-length data vector | ||||||||
3250 | SveFixedLengthDataVector, | ||||||||
3251 | |||||||||
3252 | /// is AArch64 SVE fixed-length predicate vector | ||||||||
3253 | SveFixedLengthPredicateVector | ||||||||
3254 | }; | ||||||||
3255 | |||||||||
3256 | protected: | ||||||||
3257 | friend class ASTContext; // ASTContext creates these. | ||||||||
3258 | |||||||||
3259 | /// The element type of the vector. | ||||||||
3260 | QualType ElementType; | ||||||||
3261 | |||||||||
3262 | VectorType(QualType vecType, unsigned nElements, QualType canonType, | ||||||||
3263 | VectorKind vecKind); | ||||||||
3264 | |||||||||
3265 | VectorType(TypeClass tc, QualType vecType, unsigned nElements, | ||||||||
3266 | QualType canonType, VectorKind vecKind); | ||||||||
3267 | |||||||||
3268 | public: | ||||||||
3269 | QualType getElementType() const { return ElementType; } | ||||||||
3270 | unsigned getNumElements() const { return VectorTypeBits.NumElements; } | ||||||||
3271 | |||||||||
3272 | bool isSugared() const { return false; } | ||||||||
3273 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3274 | |||||||||
3275 | VectorKind getVectorKind() const { | ||||||||
3276 | return VectorKind(VectorTypeBits.VecKind); | ||||||||
3277 | } | ||||||||
3278 | |||||||||
3279 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3280 | Profile(ID, getElementType(), getNumElements(), | ||||||||
3281 | getTypeClass(), getVectorKind()); | ||||||||
3282 | } | ||||||||
3283 | |||||||||
3284 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, | ||||||||
3285 | unsigned NumElements, TypeClass TypeClass, | ||||||||
3286 | VectorKind VecKind) { | ||||||||
3287 | ID.AddPointer(ElementType.getAsOpaquePtr()); | ||||||||
3288 | ID.AddInteger(NumElements); | ||||||||
3289 | ID.AddInteger(TypeClass); | ||||||||
3290 | ID.AddInteger(VecKind); | ||||||||
3291 | } | ||||||||
3292 | |||||||||
3293 | static bool classof(const Type *T) { | ||||||||
3294 | return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; | ||||||||
3295 | } | ||||||||
3296 | }; | ||||||||
3297 | |||||||||
3298 | /// Represents a vector type where either the type or size is dependent. | ||||||||
3299 | //// | ||||||||
3300 | /// For example: | ||||||||
3301 | /// \code | ||||||||
3302 | /// template<typename T, int Size> | ||||||||
3303 | /// class vector { | ||||||||
3304 | /// typedef T __attribute__((vector_size(Size))) type; | ||||||||
3305 | /// } | ||||||||
3306 | /// \endcode | ||||||||
3307 | class DependentVectorType : public Type, public llvm::FoldingSetNode { | ||||||||
3308 | friend class ASTContext; | ||||||||
3309 | |||||||||
3310 | const ASTContext &Context; | ||||||||
3311 | QualType ElementType; | ||||||||
3312 | Expr *SizeExpr; | ||||||||
3313 | SourceLocation Loc; | ||||||||
3314 | |||||||||
3315 | DependentVectorType(const ASTContext &Context, QualType ElementType, | ||||||||
3316 | QualType CanonType, Expr *SizeExpr, | ||||||||
3317 | SourceLocation Loc, VectorType::VectorKind vecKind); | ||||||||
3318 | |||||||||
3319 | public: | ||||||||
3320 | Expr *getSizeExpr() const { return SizeExpr; } | ||||||||
3321 | QualType getElementType() const { return ElementType; } | ||||||||
3322 | SourceLocation getAttributeLoc() const { return Loc; } | ||||||||
3323 | VectorType::VectorKind getVectorKind() const { | ||||||||
3324 | return VectorType::VectorKind(VectorTypeBits.VecKind); | ||||||||
3325 | } | ||||||||
3326 | |||||||||
3327 | bool isSugared() const { return false; } | ||||||||
3328 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3329 | |||||||||
3330 | static bool classof(const Type *T) { | ||||||||
3331 | return T->getTypeClass() == DependentVector; | ||||||||
3332 | } | ||||||||
3333 | |||||||||
3334 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3335 | Profile(ID, Context, getElementType(), getSizeExpr(), getVectorKind()); | ||||||||
3336 | } | ||||||||
3337 | |||||||||
3338 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
3339 | QualType ElementType, const Expr *SizeExpr, | ||||||||
3340 | VectorType::VectorKind VecKind); | ||||||||
3341 | }; | ||||||||
3342 | |||||||||
3343 | /// ExtVectorType - Extended vector type. This type is created using | ||||||||
3344 | /// __attribute__((ext_vector_type(n)), where "n" is the number of elements. | ||||||||
3345 | /// Unlike vector_size, ext_vector_type is only allowed on typedef's. This | ||||||||
3346 | /// class enables syntactic extensions, like Vector Components for accessing | ||||||||
3347 | /// points (as .xyzw), colors (as .rgba), and textures (modeled after OpenGL | ||||||||
3348 | /// Shading Language). | ||||||||
3349 | class ExtVectorType : public VectorType { | ||||||||
3350 | friend class ASTContext; // ASTContext creates these. | ||||||||
3351 | |||||||||
3352 | ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) | ||||||||
3353 | : VectorType(ExtVector, vecType, nElements, canonType, GenericVector) {} | ||||||||
3354 | |||||||||
3355 | public: | ||||||||
3356 | static int getPointAccessorIdx(char c) { | ||||||||
3357 | switch (c) { | ||||||||
3358 | default: return -1; | ||||||||
3359 | case 'x': case 'r': return 0; | ||||||||
3360 | case 'y': case 'g': return 1; | ||||||||
3361 | case 'z': case 'b': return 2; | ||||||||
3362 | case 'w': case 'a': return 3; | ||||||||
3363 | } | ||||||||
3364 | } | ||||||||
3365 | |||||||||
3366 | static int getNumericAccessorIdx(char c) { | ||||||||
3367 | switch (c) { | ||||||||
3368 | default: return -1; | ||||||||
3369 | case '0': return 0; | ||||||||
3370 | case '1': return 1; | ||||||||
3371 | case '2': return 2; | ||||||||
3372 | case '3': return 3; | ||||||||
3373 | case '4': return 4; | ||||||||
3374 | case '5': return 5; | ||||||||
3375 | case '6': return 6; | ||||||||
3376 | case '7': return 7; | ||||||||
3377 | case '8': return 8; | ||||||||
3378 | case '9': return 9; | ||||||||
3379 | case 'A': | ||||||||
3380 | case 'a': return 10; | ||||||||
3381 | case 'B': | ||||||||
3382 | case 'b': return 11; | ||||||||
3383 | case 'C': | ||||||||
3384 | case 'c': return 12; | ||||||||
3385 | case 'D': | ||||||||
3386 | case 'd': return 13; | ||||||||
3387 | case 'E': | ||||||||
3388 | case 'e': return 14; | ||||||||
3389 | case 'F': | ||||||||
3390 | case 'f': return 15; | ||||||||
3391 | } | ||||||||
3392 | } | ||||||||
3393 | |||||||||
3394 | static int getAccessorIdx(char c, bool isNumericAccessor) { | ||||||||
3395 | if (isNumericAccessor) | ||||||||
3396 | return getNumericAccessorIdx(c); | ||||||||
3397 | else | ||||||||
3398 | return getPointAccessorIdx(c); | ||||||||
3399 | } | ||||||||
3400 | |||||||||
3401 | bool isAccessorWithinNumElements(char c, bool isNumericAccessor) const { | ||||||||
3402 | if (int idx = getAccessorIdx(c, isNumericAccessor)+1) | ||||||||
3403 | return unsigned(idx-1) < getNumElements(); | ||||||||
3404 | return false; | ||||||||
3405 | } | ||||||||
3406 | |||||||||
3407 | bool isSugared() const { return false; } | ||||||||
3408 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3409 | |||||||||
3410 | static bool classof(const Type *T) { | ||||||||
3411 | return T->getTypeClass() == ExtVector; | ||||||||
3412 | } | ||||||||
3413 | }; | ||||||||
3414 | |||||||||
3415 | /// Represents a matrix type, as defined in the Matrix Types clang extensions. | ||||||||
3416 | /// __attribute__((matrix_type(rows, columns))), where "rows" specifies | ||||||||
3417 | /// number of rows and "columns" specifies the number of columns. | ||||||||
3418 | class MatrixType : public Type, public llvm::FoldingSetNode { | ||||||||
3419 | protected: | ||||||||
3420 | friend class ASTContext; | ||||||||
3421 | |||||||||
3422 | /// The element type of the matrix. | ||||||||
3423 | QualType ElementType; | ||||||||
3424 | |||||||||
3425 | MatrixType(QualType ElementTy, QualType CanonElementTy); | ||||||||
3426 | |||||||||
3427 | MatrixType(TypeClass TypeClass, QualType ElementTy, QualType CanonElementTy, | ||||||||
3428 | const Expr *RowExpr = nullptr, const Expr *ColumnExpr = nullptr); | ||||||||
3429 | |||||||||
3430 | public: | ||||||||
3431 | /// Returns type of the elements being stored in the matrix | ||||||||
3432 | QualType getElementType() const { return ElementType; } | ||||||||
3433 | |||||||||
3434 | /// Valid elements types are the following: | ||||||||
3435 | /// * an integer type (as in C2x 6.2.5p19), but excluding enumerated types | ||||||||
3436 | /// and _Bool | ||||||||
3437 | /// * the standard floating types float or double | ||||||||
3438 | /// * a half-precision floating point type, if one is supported on the target | ||||||||
3439 | static bool isValidElementType(QualType T) { | ||||||||
3440 | return T->isDependentType() || | ||||||||
3441 | (T->isRealType() && !T->isBooleanType() && !T->isEnumeralType()); | ||||||||
3442 | } | ||||||||
3443 | |||||||||
3444 | bool isSugared() const { return false; } | ||||||||
3445 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3446 | |||||||||
3447 | static bool classof(const Type *T) { | ||||||||
3448 | return T->getTypeClass() == ConstantMatrix || | ||||||||
3449 | T->getTypeClass() == DependentSizedMatrix; | ||||||||
3450 | } | ||||||||
3451 | }; | ||||||||
3452 | |||||||||
3453 | /// Represents a concrete matrix type with constant number of rows and columns | ||||||||
3454 | class ConstantMatrixType final : public MatrixType { | ||||||||
3455 | protected: | ||||||||
3456 | friend class ASTContext; | ||||||||
3457 | |||||||||
3458 | /// Number of rows and columns. | ||||||||
3459 | unsigned NumRows; | ||||||||
3460 | unsigned NumColumns; | ||||||||
3461 | |||||||||
3462 | static constexpr unsigned MaxElementsPerDimension = (1 << 20) - 1; | ||||||||
3463 | |||||||||
3464 | ConstantMatrixType(QualType MatrixElementType, unsigned NRows, | ||||||||
3465 | unsigned NColumns, QualType CanonElementType); | ||||||||
3466 | |||||||||
3467 | ConstantMatrixType(TypeClass typeClass, QualType MatrixType, unsigned NRows, | ||||||||
3468 | unsigned NColumns, QualType CanonElementType); | ||||||||
3469 | |||||||||
3470 | public: | ||||||||
3471 | /// Returns the number of rows in the matrix. | ||||||||
3472 | unsigned getNumRows() const { return NumRows; } | ||||||||
3473 | |||||||||
3474 | /// Returns the number of columns in the matrix. | ||||||||
3475 | unsigned getNumColumns() const { return NumColumns; } | ||||||||
3476 | |||||||||
3477 | /// Returns the number of elements required to embed the matrix into a vector. | ||||||||
3478 | unsigned getNumElementsFlattened() const { | ||||||||
3479 | return getNumRows() * getNumColumns(); | ||||||||
3480 | } | ||||||||
3481 | |||||||||
3482 | /// Returns true if \p NumElements is a valid matrix dimension. | ||||||||
3483 | static constexpr bool isDimensionValid(size_t NumElements) { | ||||||||
3484 | return NumElements > 0 && NumElements <= MaxElementsPerDimension; | ||||||||
3485 | } | ||||||||
3486 | |||||||||
3487 | /// Returns the maximum number of elements per dimension. | ||||||||
3488 | static constexpr unsigned getMaxElementsPerDimension() { | ||||||||
3489 | return MaxElementsPerDimension; | ||||||||
3490 | } | ||||||||
3491 | |||||||||
3492 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3493 | Profile(ID, getElementType(), getNumRows(), getNumColumns(), | ||||||||
3494 | getTypeClass()); | ||||||||
3495 | } | ||||||||
3496 | |||||||||
3497 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, | ||||||||
3498 | unsigned NumRows, unsigned NumColumns, | ||||||||
3499 | TypeClass TypeClass) { | ||||||||
3500 | ID.AddPointer(ElementType.getAsOpaquePtr()); | ||||||||
3501 | ID.AddInteger(NumRows); | ||||||||
3502 | ID.AddInteger(NumColumns); | ||||||||
3503 | ID.AddInteger(TypeClass); | ||||||||
3504 | } | ||||||||
3505 | |||||||||
3506 | static bool classof(const Type *T) { | ||||||||
3507 | return T->getTypeClass() == ConstantMatrix; | ||||||||
3508 | } | ||||||||
3509 | }; | ||||||||
3510 | |||||||||
3511 | /// Represents a matrix type where the type and the number of rows and columns | ||||||||
3512 | /// is dependent on a template. | ||||||||
3513 | class DependentSizedMatrixType final : public MatrixType { | ||||||||
3514 | friend class ASTContext; | ||||||||
3515 | |||||||||
3516 | const ASTContext &Context; | ||||||||
3517 | Expr *RowExpr; | ||||||||
3518 | Expr *ColumnExpr; | ||||||||
3519 | |||||||||
3520 | SourceLocation loc; | ||||||||
3521 | |||||||||
3522 | DependentSizedMatrixType(const ASTContext &Context, QualType ElementType, | ||||||||
3523 | QualType CanonicalType, Expr *RowExpr, | ||||||||
3524 | Expr *ColumnExpr, SourceLocation loc); | ||||||||
3525 | |||||||||
3526 | public: | ||||||||
3527 | QualType getElementType() const { return ElementType; } | ||||||||
3528 | Expr *getRowExpr() const { return RowExpr; } | ||||||||
3529 | Expr *getColumnExpr() const { return ColumnExpr; } | ||||||||
3530 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||
3531 | |||||||||
3532 | bool isSugared() const { return false; } | ||||||||
3533 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3534 | |||||||||
3535 | static bool classof(const Type *T) { | ||||||||
3536 | return T->getTypeClass() == DependentSizedMatrix; | ||||||||
3537 | } | ||||||||
3538 | |||||||||
3539 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3540 | Profile(ID, Context, getElementType(), getRowExpr(), getColumnExpr()); | ||||||||
3541 | } | ||||||||
3542 | |||||||||
3543 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
3544 | QualType ElementType, Expr *RowExpr, Expr *ColumnExpr); | ||||||||
3545 | }; | ||||||||
3546 | |||||||||
3547 | /// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base | ||||||||
3548 | /// class of FunctionNoProtoType and FunctionProtoType. | ||||||||
3549 | class FunctionType : public Type { | ||||||||
3550 | // The type returned by the function. | ||||||||
3551 | QualType ResultType; | ||||||||
3552 | |||||||||
3553 | public: | ||||||||
3554 | /// Interesting information about a specific parameter that can't simply | ||||||||
3555 | /// be reflected in parameter's type. This is only used by FunctionProtoType | ||||||||
3556 | /// but is in FunctionType to make this class available during the | ||||||||
3557 | /// specification of the bases of FunctionProtoType. | ||||||||
3558 | /// | ||||||||
3559 | /// It makes sense to model language features this way when there's some | ||||||||
3560 | /// sort of parameter-specific override (such as an attribute) that | ||||||||
3561 | /// affects how the function is called. For example, the ARC ns_consumed | ||||||||
3562 | /// attribute changes whether a parameter is passed at +0 (the default) | ||||||||
3563 | /// or +1 (ns_consumed). This must be reflected in the function type, | ||||||||
3564 | /// but isn't really a change to the parameter type. | ||||||||
3565 | /// | ||||||||
3566 | /// One serious disadvantage of modelling language features this way is | ||||||||
3567 | /// that they generally do not work with language features that attempt | ||||||||
3568 | /// to destructure types. For example, template argument deduction will | ||||||||
3569 | /// not be able to match a parameter declared as | ||||||||
3570 | /// T (*)(U) | ||||||||
3571 | /// against an argument of type | ||||||||
3572 | /// void (*)(__attribute__((ns_consumed)) id) | ||||||||
3573 | /// because the substitution of T=void, U=id into the former will | ||||||||
3574 | /// not produce the latter. | ||||||||
3575 | class ExtParameterInfo { | ||||||||
3576 | enum { | ||||||||
3577 | ABIMask = 0x0F, | ||||||||
3578 | IsConsumed = 0x10, | ||||||||
3579 | HasPassObjSize = 0x20, | ||||||||
3580 | IsNoEscape = 0x40, | ||||||||
3581 | }; | ||||||||
3582 | unsigned char Data = 0; | ||||||||
3583 | |||||||||
3584 | public: | ||||||||
3585 | ExtParameterInfo() = default; | ||||||||
3586 | |||||||||
3587 | /// Return the ABI treatment of this parameter. | ||||||||
3588 | ParameterABI getABI() const { return ParameterABI(Data & ABIMask); } | ||||||||
3589 | ExtParameterInfo withABI(ParameterABI kind) const { | ||||||||
3590 | ExtParameterInfo copy = *this; | ||||||||
3591 | copy.Data = (copy.Data & ~ABIMask) | unsigned(kind); | ||||||||
3592 | return copy; | ||||||||
3593 | } | ||||||||
3594 | |||||||||
3595 | /// Is this parameter considered "consumed" by Objective-C ARC? | ||||||||
3596 | /// Consumed parameters must have retainable object type. | ||||||||
3597 | bool isConsumed() const { return (Data & IsConsumed); } | ||||||||
3598 | ExtParameterInfo withIsConsumed(bool consumed) const { | ||||||||
3599 | ExtParameterInfo copy = *this; | ||||||||
3600 | if (consumed) | ||||||||
3601 | copy.Data |= IsConsumed; | ||||||||
3602 | else | ||||||||
3603 | copy.Data &= ~IsConsumed; | ||||||||
3604 | return copy; | ||||||||
3605 | } | ||||||||
3606 | |||||||||
3607 | bool hasPassObjectSize() const { return Data & HasPassObjSize; } | ||||||||
3608 | ExtParameterInfo withHasPassObjectSize() const { | ||||||||
3609 | ExtParameterInfo Copy = *this; | ||||||||
3610 | Copy.Data |= HasPassObjSize; | ||||||||
3611 | return Copy; | ||||||||
3612 | } | ||||||||
3613 | |||||||||
3614 | bool isNoEscape() const { return Data & IsNoEscape; } | ||||||||
3615 | ExtParameterInfo withIsNoEscape(bool NoEscape) const { | ||||||||
3616 | ExtParameterInfo Copy = *this; | ||||||||
3617 | if (NoEscape) | ||||||||
3618 | Copy.Data |= IsNoEscape; | ||||||||
3619 | else | ||||||||
3620 | Copy.Data &= ~IsNoEscape; | ||||||||
3621 | return Copy; | ||||||||
3622 | } | ||||||||
3623 | |||||||||
3624 | unsigned char getOpaqueValue() const { return Data; } | ||||||||
3625 | static ExtParameterInfo getFromOpaqueValue(unsigned char data) { | ||||||||
3626 | ExtParameterInfo result; | ||||||||
3627 | result.Data = data; | ||||||||
3628 | return result; | ||||||||
3629 | } | ||||||||
3630 | |||||||||
3631 | friend bool operator==(ExtParameterInfo lhs, ExtParameterInfo rhs) { | ||||||||
3632 | return lhs.Data == rhs.Data; | ||||||||
3633 | } | ||||||||
3634 | |||||||||
3635 | friend bool operator!=(ExtParameterInfo lhs, ExtParameterInfo rhs) { | ||||||||
3636 | return lhs.Data != rhs.Data; | ||||||||
3637 | } | ||||||||
3638 | }; | ||||||||
3639 | |||||||||
3640 | /// A class which abstracts out some details necessary for | ||||||||
3641 | /// making a call. | ||||||||
3642 | /// | ||||||||
3643 | /// It is not actually used directly for storing this information in | ||||||||
3644 | /// a FunctionType, although FunctionType does currently use the | ||||||||
3645 | /// same bit-pattern. | ||||||||
3646 | /// | ||||||||
3647 | // If you add a field (say Foo), other than the obvious places (both, | ||||||||
3648 | // constructors, compile failures), what you need to update is | ||||||||
3649 | // * Operator== | ||||||||
3650 | // * getFoo | ||||||||
3651 | // * withFoo | ||||||||
3652 | // * functionType. Add Foo, getFoo. | ||||||||
3653 | // * ASTContext::getFooType | ||||||||
3654 | // * ASTContext::mergeFunctionTypes | ||||||||
3655 | // * FunctionNoProtoType::Profile | ||||||||
3656 | // * FunctionProtoType::Profile | ||||||||
3657 | // * TypePrinter::PrintFunctionProto | ||||||||
3658 | // * AST read and write | ||||||||
3659 | // * Codegen | ||||||||
3660 | class ExtInfo { | ||||||||
3661 | friend class FunctionType; | ||||||||
3662 | |||||||||
3663 | // Feel free to rearrange or add bits, but if you go over 16, you'll need to | ||||||||
3664 | // adjust the Bits field below, and if you add bits, you'll need to adjust | ||||||||
3665 | // Type::FunctionTypeBitfields::ExtInfo as well. | ||||||||
3666 | |||||||||
3667 | // | CC |noreturn|produces|nocallersavedregs|regparm|nocfcheck|cmsenscall| | ||||||||
3668 | // |0 .. 4| 5 | 6 | 7 |8 .. 10| 11 | 12 | | ||||||||
3669 | // | ||||||||
3670 | // regparm is either 0 (no regparm attribute) or the regparm value+1. | ||||||||
3671 | enum { CallConvMask = 0x1F }; | ||||||||
3672 | enum { NoReturnMask = 0x20 }; | ||||||||
3673 | enum { ProducesResultMask = 0x40 }; | ||||||||
3674 | enum { NoCallerSavedRegsMask = 0x80 }; | ||||||||
3675 | enum { | ||||||||
3676 | RegParmMask = 0x700, | ||||||||
3677 | RegParmOffset = 8 | ||||||||
3678 | }; | ||||||||
3679 | enum { NoCfCheckMask = 0x800 }; | ||||||||
3680 | enum { CmseNSCallMask = 0x1000 }; | ||||||||
3681 | uint16_t Bits = CC_C; | ||||||||
3682 | |||||||||
3683 | ExtInfo(unsigned Bits) : Bits(static_cast<uint16_t>(Bits)) {} | ||||||||
3684 | |||||||||
3685 | public: | ||||||||
3686 | // Constructor with no defaults. Use this when you know that you | ||||||||
3687 | // have all the elements (when reading an AST file for example). | ||||||||
3688 | ExtInfo(bool noReturn, bool hasRegParm, unsigned regParm, CallingConv cc, | ||||||||
3689 | bool producesResult, bool noCallerSavedRegs, bool NoCfCheck, | ||||||||
3690 | bool cmseNSCall) { | ||||||||
3691 | assert((!hasRegParm || regParm < 7) && "Invalid regparm value")(static_cast <bool> ((!hasRegParm || regParm < 7) && "Invalid regparm value") ? void (0) : __assert_fail ("(!hasRegParm || regParm < 7) && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 3691, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3692 | Bits = ((unsigned)cc) | (noReturn ? NoReturnMask : 0) | | ||||||||
3693 | (producesResult ? ProducesResultMask : 0) | | ||||||||
3694 | (noCallerSavedRegs ? NoCallerSavedRegsMask : 0) | | ||||||||
3695 | (hasRegParm ? ((regParm + 1) << RegParmOffset) : 0) | | ||||||||
3696 | (NoCfCheck ? NoCfCheckMask : 0) | | ||||||||
3697 | (cmseNSCall ? CmseNSCallMask : 0); | ||||||||
3698 | } | ||||||||
3699 | |||||||||
3700 | // Constructor with all defaults. Use when for example creating a | ||||||||
3701 | // function known to use defaults. | ||||||||
3702 | ExtInfo() = default; | ||||||||
3703 | |||||||||
3704 | // Constructor with just the calling convention, which is an important part | ||||||||
3705 | // of the canonical type. | ||||||||
3706 | ExtInfo(CallingConv CC) : Bits(CC) {} | ||||||||
3707 | |||||||||
3708 | bool getNoReturn() const { return Bits & NoReturnMask; } | ||||||||
3709 | bool getProducesResult() const { return Bits & ProducesResultMask; } | ||||||||
3710 | bool getCmseNSCall() const { return Bits & CmseNSCallMask; } | ||||||||
3711 | bool getNoCallerSavedRegs() const { return Bits & NoCallerSavedRegsMask; } | ||||||||
3712 | bool getNoCfCheck() const { return Bits & NoCfCheckMask; } | ||||||||
3713 | bool getHasRegParm() const { return ((Bits & RegParmMask) >> RegParmOffset) != 0; } | ||||||||
3714 | |||||||||
3715 | unsigned getRegParm() const { | ||||||||
3716 | unsigned RegParm = (Bits & RegParmMask) >> RegParmOffset; | ||||||||
3717 | if (RegParm > 0) | ||||||||
3718 | --RegParm; | ||||||||
3719 | return RegParm; | ||||||||
3720 | } | ||||||||
3721 | |||||||||
3722 | CallingConv getCC() const { return CallingConv(Bits & CallConvMask); } | ||||||||
3723 | |||||||||
3724 | bool operator==(ExtInfo Other) const { | ||||||||
3725 | return Bits == Other.Bits; | ||||||||
3726 | } | ||||||||
3727 | bool operator!=(ExtInfo Other) const { | ||||||||
3728 | return Bits != Other.Bits; | ||||||||
3729 | } | ||||||||
3730 | |||||||||
3731 | // Note that we don't have setters. That is by design, use | ||||||||
3732 | // the following with methods instead of mutating these objects. | ||||||||
3733 | |||||||||
3734 | ExtInfo withNoReturn(bool noReturn) const { | ||||||||
3735 | if (noReturn) | ||||||||
3736 | return ExtInfo(Bits | NoReturnMask); | ||||||||
3737 | else | ||||||||
3738 | return ExtInfo(Bits & ~NoReturnMask); | ||||||||
3739 | } | ||||||||
3740 | |||||||||
3741 | ExtInfo withProducesResult(bool producesResult) const { | ||||||||
3742 | if (producesResult) | ||||||||
3743 | return ExtInfo(Bits | ProducesResultMask); | ||||||||
3744 | else | ||||||||
3745 | return ExtInfo(Bits & ~ProducesResultMask); | ||||||||
3746 | } | ||||||||
3747 | |||||||||
3748 | ExtInfo withCmseNSCall(bool cmseNSCall) const { | ||||||||
3749 | if (cmseNSCall) | ||||||||
3750 | return ExtInfo(Bits | CmseNSCallMask); | ||||||||
3751 | else | ||||||||
3752 | return ExtInfo(Bits & ~CmseNSCallMask); | ||||||||
3753 | } | ||||||||
3754 | |||||||||
3755 | ExtInfo withNoCallerSavedRegs(bool noCallerSavedRegs) const { | ||||||||
3756 | if (noCallerSavedRegs) | ||||||||
3757 | return ExtInfo(Bits | NoCallerSavedRegsMask); | ||||||||
3758 | else | ||||||||
3759 | return ExtInfo(Bits & ~NoCallerSavedRegsMask); | ||||||||
3760 | } | ||||||||
3761 | |||||||||
3762 | ExtInfo withNoCfCheck(bool noCfCheck) const { | ||||||||
3763 | if (noCfCheck) | ||||||||
3764 | return ExtInfo(Bits | NoCfCheckMask); | ||||||||
3765 | else | ||||||||
3766 | return ExtInfo(Bits & ~NoCfCheckMask); | ||||||||
3767 | } | ||||||||
3768 | |||||||||
3769 | ExtInfo withRegParm(unsigned RegParm) const { | ||||||||
3770 | assert(RegParm < 7 && "Invalid regparm value")(static_cast <bool> (RegParm < 7 && "Invalid regparm value" ) ? void (0) : __assert_fail ("RegParm < 7 && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 3770, __extension__ __PRETTY_FUNCTION__)); | ||||||||
3771 | return ExtInfo((Bits & ~RegParmMask) | | ||||||||
3772 | ((RegParm + 1) << RegParmOffset)); | ||||||||
3773 | } | ||||||||
3774 | |||||||||
3775 | ExtInfo withCallingConv(CallingConv cc) const { | ||||||||
3776 | return ExtInfo((Bits & ~CallConvMask) | (unsigned) cc); | ||||||||
3777 | } | ||||||||
3778 | |||||||||
3779 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
3780 | ID.AddInteger(Bits); | ||||||||
3781 | } | ||||||||
3782 | }; | ||||||||
3783 | |||||||||
3784 | /// A simple holder for a QualType representing a type in an | ||||||||
3785 | /// exception specification. Unfortunately needed by FunctionProtoType | ||||||||
3786 | /// because TrailingObjects cannot handle repeated types. | ||||||||
3787 | struct ExceptionType { QualType Type; }; | ||||||||
3788 | |||||||||
3789 | /// A simple holder for various uncommon bits which do not fit in | ||||||||
3790 | /// FunctionTypeBitfields. Aligned to alignof(void *) to maintain the | ||||||||
3791 | /// alignment of subsequent objects in TrailingObjects. You must update | ||||||||
3792 | /// hasExtraBitfields in FunctionProtoType after adding extra data here. | ||||||||
3793 | struct alignas(void *) FunctionTypeExtraBitfields { | ||||||||
3794 | /// The number of types in the exception specification. | ||||||||
3795 | /// A whole unsigned is not needed here and according to | ||||||||
3796 | /// [implimits] 8 bits would be enough here. | ||||||||
3797 | unsigned NumExceptionType; | ||||||||
3798 | }; | ||||||||
3799 | |||||||||
3800 | protected: | ||||||||
3801 | FunctionType(TypeClass tc, QualType res, QualType Canonical, | ||||||||
3802 | TypeDependence Dependence, ExtInfo Info) | ||||||||
3803 | : Type(tc, Canonical, Dependence), ResultType(res) { | ||||||||
3804 | FunctionTypeBits.ExtInfo = Info.Bits; | ||||||||
3805 | } | ||||||||
3806 | |||||||||
3807 | Qualifiers getFastTypeQuals() const { | ||||||||
3808 | return Qualifiers::fromFastMask(FunctionTypeBits.FastTypeQuals); | ||||||||
3809 | } | ||||||||
3810 | |||||||||
3811 | public: | ||||||||
3812 | QualType getReturnType() const { return ResultType; } | ||||||||
3813 | |||||||||
3814 | bool getHasRegParm() const { return getExtInfo().getHasRegParm(); } | ||||||||
3815 | unsigned getRegParmType() const { return getExtInfo().getRegParm(); } | ||||||||
3816 | |||||||||
3817 | /// Determine whether this function type includes the GNU noreturn | ||||||||
3818 | /// attribute. The C++11 [[noreturn]] attribute does not affect the function | ||||||||
3819 | /// type. | ||||||||
3820 | bool getNoReturnAttr() const { return getExtInfo().getNoReturn(); } | ||||||||
3821 | |||||||||
3822 | bool getCmseNSCallAttr() const { return getExtInfo().getCmseNSCall(); } | ||||||||
3823 | CallingConv getCallConv() const { return getExtInfo().getCC(); } | ||||||||
3824 | ExtInfo getExtInfo() const { return ExtInfo(FunctionTypeBits.ExtInfo); } | ||||||||
3825 | |||||||||
3826 | static_assert((~Qualifiers::FastMask & Qualifiers::CVRMask) == 0, | ||||||||
3827 | "Const, volatile and restrict are assumed to be a subset of " | ||||||||
3828 | "the fast qualifiers."); | ||||||||
3829 | |||||||||
3830 | bool isConst() const { return getFastTypeQuals().hasConst(); } | ||||||||
3831 | bool isVolatile() const { return getFastTypeQuals().hasVolatile(); } | ||||||||
3832 | bool isRestrict() const { return getFastTypeQuals().hasRestrict(); } | ||||||||
3833 | |||||||||
3834 | /// Determine the type of an expression that calls a function of | ||||||||
3835 | /// this type. | ||||||||
3836 | QualType getCallResultType(const ASTContext &Context) const { | ||||||||
3837 | return getReturnType().getNonLValueExprType(Context); | ||||||||
3838 | } | ||||||||
3839 | |||||||||
3840 | static StringRef getNameForCallConv(CallingConv CC); | ||||||||
3841 | |||||||||
3842 | static bool classof(const Type *T) { | ||||||||
3843 | return T->getTypeClass() == FunctionNoProto || | ||||||||
3844 | T->getTypeClass() == FunctionProto; | ||||||||
3845 | } | ||||||||
3846 | }; | ||||||||
3847 | |||||||||
3848 | /// Represents a K&R-style 'int foo()' function, which has | ||||||||
3849 | /// no information available about its arguments. | ||||||||
3850 | class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { | ||||||||
3851 | friend class ASTContext; // ASTContext creates these. | ||||||||
3852 | |||||||||
3853 | FunctionNoProtoType(QualType Result, QualType Canonical, ExtInfo Info) | ||||||||
3854 | : FunctionType(FunctionNoProto, Result, Canonical, | ||||||||
3855 | Result->getDependence() & | ||||||||
3856 | ~(TypeDependence::DependentInstantiation | | ||||||||
3857 | TypeDependence::UnexpandedPack), | ||||||||
3858 | Info) {} | ||||||||
3859 | |||||||||
3860 | public: | ||||||||
3861 | // No additional state past what FunctionType provides. | ||||||||
3862 | |||||||||
3863 | bool isSugared() const { return false; } | ||||||||
3864 | QualType desugar() const { return QualType(this, 0); } | ||||||||
3865 | |||||||||
3866 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
3867 | Profile(ID, getReturnType(), getExtInfo()); | ||||||||
3868 | } | ||||||||
3869 | |||||||||
3870 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType, | ||||||||
3871 | ExtInfo Info) { | ||||||||
3872 | Info.Profile(ID); | ||||||||
3873 | ID.AddPointer(ResultType.getAsOpaquePtr()); | ||||||||
3874 | } | ||||||||
3875 | |||||||||
3876 | static bool classof(const Type *T) { | ||||||||
3877 | return T->getTypeClass() == FunctionNoProto; | ||||||||
3878 | } | ||||||||
3879 | }; | ||||||||
3880 | |||||||||
3881 | /// Represents a prototype with parameter type info, e.g. | ||||||||
3882 | /// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no | ||||||||
3883 | /// parameters, not as having a single void parameter. Such a type can have | ||||||||
3884 | /// an exception specification, but this specification is not part of the | ||||||||
3885 | /// canonical type. FunctionProtoType has several trailing objects, some of | ||||||||
3886 | /// which optional. For more information about the trailing objects see | ||||||||
3887 | /// the first comment inside FunctionProtoType. | ||||||||
3888 | class FunctionProtoType final | ||||||||
3889 | : public FunctionType, | ||||||||
3890 | public llvm::FoldingSetNode, | ||||||||
3891 | private llvm::TrailingObjects< | ||||||||
3892 | FunctionProtoType, QualType, SourceLocation, | ||||||||
3893 | FunctionType::FunctionTypeExtraBitfields, FunctionType::ExceptionType, | ||||||||
3894 | Expr *, FunctionDecl *, FunctionType::ExtParameterInfo, Qualifiers> { | ||||||||
3895 | friend class ASTContext; // ASTContext creates these. | ||||||||
3896 | friend TrailingObjects; | ||||||||
3897 | |||||||||
3898 | // FunctionProtoType is followed by several trailing objects, some of | ||||||||
3899 | // which optional. They are in order: | ||||||||
3900 | // | ||||||||
3901 | // * An array of getNumParams() QualType holding the parameter types. | ||||||||
3902 | // Always present. Note that for the vast majority of FunctionProtoType, | ||||||||
3903 | // these will be the only trailing objects. | ||||||||
3904 | // | ||||||||
3905 | // * Optionally if the function is variadic, the SourceLocation of the | ||||||||
3906 | // ellipsis. | ||||||||
3907 | // | ||||||||
3908 | // * Optionally if some extra data is stored in FunctionTypeExtraBitfields | ||||||||
3909 | // (see FunctionTypeExtraBitfields and FunctionTypeBitfields): | ||||||||
3910 | // a single FunctionTypeExtraBitfields. Present if and only if | ||||||||
3911 | // hasExtraBitfields() is true. | ||||||||
3912 | // | ||||||||
3913 | // * Optionally exactly one of: | ||||||||
3914 | // * an array of getNumExceptions() ExceptionType, | ||||||||
3915 | // * a single Expr *, | ||||||||
3916 | // * a pair of FunctionDecl *, | ||||||||
3917 | // * a single FunctionDecl * | ||||||||
3918 | // used to store information about the various types of exception | ||||||||
3919 | // specification. See getExceptionSpecSize for the details. | ||||||||
3920 | // | ||||||||
3921 | // * Optionally an array of getNumParams() ExtParameterInfo holding | ||||||||
3922 | // an ExtParameterInfo for each of the parameters. Present if and | ||||||||
3923 | // only if hasExtParameterInfos() is true. | ||||||||
3924 | // | ||||||||
3925 | // * Optionally a Qualifiers object to represent extra qualifiers that can't | ||||||||
3926 | // be represented by FunctionTypeBitfields.FastTypeQuals. Present if and only | ||||||||
3927 | // if hasExtQualifiers() is true. | ||||||||
3928 | // | ||||||||
3929 | // The optional FunctionTypeExtraBitfields has to be before the data | ||||||||
3930 | // related to the exception specification since it contains the number | ||||||||
3931 | // of exception types. | ||||||||
3932 | // | ||||||||
3933 | // We put the ExtParameterInfos last. If all were equal, it would make | ||||||||
3934 | // more sense to put these before the exception specification, because | ||||||||
3935 | // it's much easier to skip past them compared to the elaborate switch | ||||||||
3936 | // required to skip the exception specification. However, all is not | ||||||||
3937 | // equal; ExtParameterInfos are used to model very uncommon features, | ||||||||
3938 | // and it's better not to burden the more common paths. | ||||||||
3939 | |||||||||
3940 | public: | ||||||||
3941 | /// Holds information about the various types of exception specification. | ||||||||
3942 | /// ExceptionSpecInfo is not stored as such in FunctionProtoType but is | ||||||||
3943 | /// used to group together the various bits of information about the | ||||||||
3944 | /// exception specification. | ||||||||
3945 | struct ExceptionSpecInfo { | ||||||||
3946 | /// The kind of exception specification this is. | ||||||||
3947 | ExceptionSpecificationType Type = EST_None; | ||||||||
3948 | |||||||||
3949 | /// Explicitly-specified list of exception types. | ||||||||
3950 | ArrayRef<QualType> Exceptions; | ||||||||
3951 | |||||||||
3952 | /// Noexcept expression, if this is a computed noexcept specification. | ||||||||
3953 | Expr *NoexceptExpr = nullptr; | ||||||||
3954 | |||||||||
3955 | /// The function whose exception specification this is, for | ||||||||
3956 | /// EST_Unevaluated and EST_Uninstantiated. | ||||||||
3957 | FunctionDecl *SourceDecl = nullptr; | ||||||||
3958 | |||||||||
3959 | /// The function template whose exception specification this is instantiated | ||||||||
3960 | /// from, for EST_Uninstantiated. | ||||||||
3961 | FunctionDecl *SourceTemplate = nullptr; | ||||||||
3962 | |||||||||
3963 | ExceptionSpecInfo() = default; | ||||||||
3964 | |||||||||
3965 | ExceptionSpecInfo(ExceptionSpecificationType EST) : Type(EST) {} | ||||||||
3966 | }; | ||||||||
3967 | |||||||||
3968 | /// Extra information about a function prototype. ExtProtoInfo is not | ||||||||
3969 | /// stored as such in FunctionProtoType but is used to group together | ||||||||
3970 | /// the various bits of extra information about a function prototype. | ||||||||
3971 | struct ExtProtoInfo { | ||||||||
3972 | FunctionType::ExtInfo ExtInfo; | ||||||||
3973 | bool Variadic : 1; | ||||||||
3974 | bool HasTrailingReturn : 1; | ||||||||
3975 | Qualifiers TypeQuals; | ||||||||
3976 | RefQualifierKind RefQualifier = RQ_None; | ||||||||
3977 | ExceptionSpecInfo ExceptionSpec; | ||||||||
3978 | const ExtParameterInfo *ExtParameterInfos = nullptr; | ||||||||
3979 | SourceLocation EllipsisLoc; | ||||||||
3980 | |||||||||
3981 | ExtProtoInfo() : Variadic(false), HasTrailingReturn(false) {} | ||||||||
3982 | |||||||||
3983 | ExtProtoInfo(CallingConv CC) | ||||||||
3984 | : ExtInfo(CC), Variadic(false), HasTrailingReturn(false) {} | ||||||||
3985 | |||||||||
3986 | ExtProtoInfo withExceptionSpec(const ExceptionSpecInfo &ESI) { | ||||||||
3987 | ExtProtoInfo Result(*this); | ||||||||
3988 | Result.ExceptionSpec = ESI; | ||||||||
3989 | return Result; | ||||||||
3990 | } | ||||||||
3991 | }; | ||||||||
3992 | |||||||||
3993 | private: | ||||||||
3994 | unsigned numTrailingObjects(OverloadToken<QualType>) const { | ||||||||
3995 | return getNumParams(); | ||||||||
3996 | } | ||||||||
3997 | |||||||||
3998 | unsigned numTrailingObjects(OverloadToken<SourceLocation>) const { | ||||||||
3999 | return isVariadic(); | ||||||||
4000 | } | ||||||||
4001 | |||||||||
4002 | unsigned numTrailingObjects(OverloadToken<FunctionTypeExtraBitfields>) const { | ||||||||
4003 | return hasExtraBitfields(); | ||||||||
4004 | } | ||||||||
4005 | |||||||||
4006 | unsigned numTrailingObjects(OverloadToken<ExceptionType>) const { | ||||||||
4007 | return getExceptionSpecSize().NumExceptionType; | ||||||||
4008 | } | ||||||||
4009 | |||||||||
4010 | unsigned numTrailingObjects(OverloadToken<Expr *>) const { | ||||||||
4011 | return getExceptionSpecSize().NumExprPtr; | ||||||||
4012 | } | ||||||||
4013 | |||||||||
4014 | unsigned numTrailingObjects(OverloadToken<FunctionDecl *>) const { | ||||||||
4015 | return getExceptionSpecSize().NumFunctionDeclPtr; | ||||||||
4016 | } | ||||||||
4017 | |||||||||
4018 | unsigned numTrailingObjects(OverloadToken<ExtParameterInfo>) const { | ||||||||
4019 | return hasExtParameterInfos() ? getNumParams() : 0; | ||||||||
4020 | } | ||||||||
4021 | |||||||||
4022 | /// Determine whether there are any argument types that | ||||||||
4023 | /// contain an unexpanded parameter pack. | ||||||||
4024 | static bool containsAnyUnexpandedParameterPack(const QualType *ArgArray, | ||||||||
4025 | unsigned numArgs) { | ||||||||
4026 | for (unsigned Idx = 0; Idx < numArgs; ++Idx) | ||||||||
4027 | if (ArgArray[Idx]->containsUnexpandedParameterPack()) | ||||||||
4028 | return true; | ||||||||
4029 | |||||||||
4030 | return false; | ||||||||
4031 | } | ||||||||
4032 | |||||||||
4033 | FunctionProtoType(QualType result, ArrayRef<QualType> params, | ||||||||
4034 | QualType canonical, const ExtProtoInfo &epi); | ||||||||
4035 | |||||||||
4036 | /// This struct is returned by getExceptionSpecSize and is used to | ||||||||
4037 | /// translate an ExceptionSpecificationType to the number and kind | ||||||||
4038 | /// of trailing objects related to the exception specification. | ||||||||
4039 | struct ExceptionSpecSizeHolder { | ||||||||
4040 | unsigned NumExceptionType; | ||||||||
4041 | unsigned NumExprPtr; | ||||||||
4042 | unsigned NumFunctionDeclPtr; | ||||||||
4043 | }; | ||||||||
4044 | |||||||||
4045 | /// Return the number and kind of trailing objects | ||||||||
4046 | /// related to the exception specification. | ||||||||
4047 | static ExceptionSpecSizeHolder | ||||||||
4048 | getExceptionSpecSize(ExceptionSpecificationType EST, unsigned NumExceptions) { | ||||||||
4049 | switch (EST) { | ||||||||
4050 | case EST_None: | ||||||||
4051 | case EST_DynamicNone: | ||||||||
4052 | case EST_MSAny: | ||||||||
4053 | case EST_BasicNoexcept: | ||||||||
4054 | case EST_Unparsed: | ||||||||
4055 | case EST_NoThrow: | ||||||||
4056 | return {0, 0, 0}; | ||||||||
4057 | |||||||||
4058 | case EST_Dynamic: | ||||||||
4059 | return {NumExceptions, 0, 0}; | ||||||||
4060 | |||||||||
4061 | case EST_DependentNoexcept: | ||||||||
4062 | case EST_NoexceptFalse: | ||||||||
4063 | case EST_NoexceptTrue: | ||||||||
4064 | return {0, 1, 0}; | ||||||||
4065 | |||||||||
4066 | case EST_Uninstantiated: | ||||||||
4067 | return {0, 0, 2}; | ||||||||
4068 | |||||||||
4069 | case EST_Unevaluated: | ||||||||
4070 | return {0, 0, 1}; | ||||||||
4071 | } | ||||||||
4072 | llvm_unreachable("bad exception specification kind")::llvm::llvm_unreachable_internal("bad exception specification kind" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4072); | ||||||||
4073 | } | ||||||||
4074 | |||||||||
4075 | /// Return the number and kind of trailing objects | ||||||||
4076 | /// related to the exception specification. | ||||||||
4077 | ExceptionSpecSizeHolder getExceptionSpecSize() const { | ||||||||
4078 | return getExceptionSpecSize(getExceptionSpecType(), getNumExceptions()); | ||||||||
4079 | } | ||||||||
4080 | |||||||||
4081 | /// Whether the trailing FunctionTypeExtraBitfields is present. | ||||||||
4082 | static bool hasExtraBitfields(ExceptionSpecificationType EST) { | ||||||||
4083 | // If the exception spec type is EST_Dynamic then we have > 0 exception | ||||||||
4084 | // types and the exact number is stored in FunctionTypeExtraBitfields. | ||||||||
4085 | return EST == EST_Dynamic; | ||||||||
4086 | } | ||||||||
4087 | |||||||||
4088 | /// Whether the trailing FunctionTypeExtraBitfields is present. | ||||||||
4089 | bool hasExtraBitfields() const { | ||||||||
4090 | return hasExtraBitfields(getExceptionSpecType()); | ||||||||
4091 | } | ||||||||
4092 | |||||||||
4093 | bool hasExtQualifiers() const { | ||||||||
4094 | return FunctionTypeBits.HasExtQuals; | ||||||||
4095 | } | ||||||||
4096 | |||||||||
4097 | public: | ||||||||
4098 | unsigned getNumParams() const { return FunctionTypeBits.NumParams; } | ||||||||
4099 | |||||||||
4100 | QualType getParamType(unsigned i) const { | ||||||||
4101 | assert(i < getNumParams() && "invalid parameter index")(static_cast <bool> (i < getNumParams() && "invalid parameter index" ) ? void (0) : __assert_fail ("i < getNumParams() && \"invalid parameter index\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4101, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4102 | return param_type_begin()[i]; | ||||||||
4103 | } | ||||||||
4104 | |||||||||
4105 | ArrayRef<QualType> getParamTypes() const { | ||||||||
4106 | return llvm::makeArrayRef(param_type_begin(), param_type_end()); | ||||||||
4107 | } | ||||||||
4108 | |||||||||
4109 | ExtProtoInfo getExtProtoInfo() const { | ||||||||
4110 | ExtProtoInfo EPI; | ||||||||
4111 | EPI.ExtInfo = getExtInfo(); | ||||||||
4112 | EPI.Variadic = isVariadic(); | ||||||||
4113 | EPI.EllipsisLoc = getEllipsisLoc(); | ||||||||
4114 | EPI.HasTrailingReturn = hasTrailingReturn(); | ||||||||
4115 | EPI.ExceptionSpec = getExceptionSpecInfo(); | ||||||||
4116 | EPI.TypeQuals = getMethodQuals(); | ||||||||
4117 | EPI.RefQualifier = getRefQualifier(); | ||||||||
4118 | EPI.ExtParameterInfos = getExtParameterInfosOrNull(); | ||||||||
4119 | return EPI; | ||||||||
4120 | } | ||||||||
4121 | |||||||||
4122 | /// Get the kind of exception specification on this function. | ||||||||
4123 | ExceptionSpecificationType getExceptionSpecType() const { | ||||||||
4124 | return static_cast<ExceptionSpecificationType>( | ||||||||
4125 | FunctionTypeBits.ExceptionSpecType); | ||||||||
4126 | } | ||||||||
4127 | |||||||||
4128 | /// Return whether this function has any kind of exception spec. | ||||||||
4129 | bool hasExceptionSpec() const { return getExceptionSpecType() != EST_None; } | ||||||||
4130 | |||||||||
4131 | /// Return whether this function has a dynamic (throw) exception spec. | ||||||||
4132 | bool hasDynamicExceptionSpec() const { | ||||||||
4133 | return isDynamicExceptionSpec(getExceptionSpecType()); | ||||||||
4134 | } | ||||||||
4135 | |||||||||
4136 | /// Return whether this function has a noexcept exception spec. | ||||||||
4137 | bool hasNoexceptExceptionSpec() const { | ||||||||
4138 | return isNoexceptExceptionSpec(getExceptionSpecType()); | ||||||||
4139 | } | ||||||||
4140 | |||||||||
4141 | /// Return whether this function has a dependent exception spec. | ||||||||
4142 | bool hasDependentExceptionSpec() const; | ||||||||
4143 | |||||||||
4144 | /// Return whether this function has an instantiation-dependent exception | ||||||||
4145 | /// spec. | ||||||||
4146 | bool hasInstantiationDependentExceptionSpec() const; | ||||||||
4147 | |||||||||
4148 | /// Return all the available information about this type's exception spec. | ||||||||
4149 | ExceptionSpecInfo getExceptionSpecInfo() const { | ||||||||
4150 | ExceptionSpecInfo Result; | ||||||||
4151 | Result.Type = getExceptionSpecType(); | ||||||||
4152 | if (Result.Type == EST_Dynamic) { | ||||||||
4153 | Result.Exceptions = exceptions(); | ||||||||
4154 | } else if (isComputedNoexcept(Result.Type)) { | ||||||||
4155 | Result.NoexceptExpr = getNoexceptExpr(); | ||||||||
4156 | } else if (Result.Type == EST_Uninstantiated) { | ||||||||
4157 | Result.SourceDecl = getExceptionSpecDecl(); | ||||||||
4158 | Result.SourceTemplate = getExceptionSpecTemplate(); | ||||||||
4159 | } else if (Result.Type == EST_Unevaluated) { | ||||||||
4160 | Result.SourceDecl = getExceptionSpecDecl(); | ||||||||
4161 | } | ||||||||
4162 | return Result; | ||||||||
4163 | } | ||||||||
4164 | |||||||||
4165 | /// Return the number of types in the exception specification. | ||||||||
4166 | unsigned getNumExceptions() const { | ||||||||
4167 | return getExceptionSpecType() == EST_Dynamic | ||||||||
4168 | ? getTrailingObjects<FunctionTypeExtraBitfields>() | ||||||||
4169 | ->NumExceptionType | ||||||||
4170 | : 0; | ||||||||
4171 | } | ||||||||
4172 | |||||||||
4173 | /// Return the ith exception type, where 0 <= i < getNumExceptions(). | ||||||||
4174 | QualType getExceptionType(unsigned i) const { | ||||||||
4175 | assert(i < getNumExceptions() && "Invalid exception number!")(static_cast <bool> (i < getNumExceptions() && "Invalid exception number!") ? void (0) : __assert_fail ("i < getNumExceptions() && \"Invalid exception number!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4175, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4176 | return exception_begin()[i]; | ||||||||
4177 | } | ||||||||
4178 | |||||||||
4179 | /// Return the expression inside noexcept(expression), or a null pointer | ||||||||
4180 | /// if there is none (because the exception spec is not of this form). | ||||||||
4181 | Expr *getNoexceptExpr() const { | ||||||||
4182 | if (!isComputedNoexcept(getExceptionSpecType())) | ||||||||
4183 | return nullptr; | ||||||||
4184 | return *getTrailingObjects<Expr *>(); | ||||||||
4185 | } | ||||||||
4186 | |||||||||
4187 | /// If this function type has an exception specification which hasn't | ||||||||
4188 | /// been determined yet (either because it has not been evaluated or because | ||||||||
4189 | /// it has not been instantiated), this is the function whose exception | ||||||||
4190 | /// specification is represented by this type. | ||||||||
4191 | FunctionDecl *getExceptionSpecDecl() const { | ||||||||
4192 | if (getExceptionSpecType() != EST_Uninstantiated && | ||||||||
4193 | getExceptionSpecType() != EST_Unevaluated) | ||||||||
4194 | return nullptr; | ||||||||
4195 | return getTrailingObjects<FunctionDecl *>()[0]; | ||||||||
4196 | } | ||||||||
4197 | |||||||||
4198 | /// If this function type has an uninstantiated exception | ||||||||
4199 | /// specification, this is the function whose exception specification | ||||||||
4200 | /// should be instantiated to find the exception specification for | ||||||||
4201 | /// this type. | ||||||||
4202 | FunctionDecl *getExceptionSpecTemplate() const { | ||||||||
4203 | if (getExceptionSpecType() != EST_Uninstantiated) | ||||||||
4204 | return nullptr; | ||||||||
4205 | return getTrailingObjects<FunctionDecl *>()[1]; | ||||||||
4206 | } | ||||||||
4207 | |||||||||
4208 | /// Determine whether this function type has a non-throwing exception | ||||||||
4209 | /// specification. | ||||||||
4210 | CanThrowResult canThrow() const; | ||||||||
4211 | |||||||||
4212 | /// Determine whether this function type has a non-throwing exception | ||||||||
4213 | /// specification. If this depends on template arguments, returns | ||||||||
4214 | /// \c ResultIfDependent. | ||||||||
4215 | bool isNothrow(bool ResultIfDependent = false) const { | ||||||||
4216 | return ResultIfDependent ? canThrow() != CT_Can : canThrow() == CT_Cannot; | ||||||||
4217 | } | ||||||||
4218 | |||||||||
4219 | /// Whether this function prototype is variadic. | ||||||||
4220 | bool isVariadic() const { return FunctionTypeBits.Variadic; } | ||||||||
4221 | |||||||||
4222 | SourceLocation getEllipsisLoc() const { | ||||||||
4223 | return isVariadic() ? *getTrailingObjects<SourceLocation>() | ||||||||
4224 | : SourceLocation(); | ||||||||
4225 | } | ||||||||
4226 | |||||||||
4227 | /// Determines whether this function prototype contains a | ||||||||
4228 | /// parameter pack at the end. | ||||||||
4229 | /// | ||||||||
4230 | /// A function template whose last parameter is a parameter pack can be | ||||||||
4231 | /// called with an arbitrary number of arguments, much like a variadic | ||||||||
4232 | /// function. | ||||||||
4233 | bool isTemplateVariadic() const; | ||||||||
4234 | |||||||||
4235 | /// Whether this function prototype has a trailing return type. | ||||||||
4236 | bool hasTrailingReturn() const { return FunctionTypeBits.HasTrailingReturn; } | ||||||||
4237 | |||||||||
4238 | Qualifiers getMethodQuals() const { | ||||||||
4239 | if (hasExtQualifiers()) | ||||||||
4240 | return *getTrailingObjects<Qualifiers>(); | ||||||||
4241 | else | ||||||||
4242 | return getFastTypeQuals(); | ||||||||
4243 | } | ||||||||
4244 | |||||||||
4245 | /// Retrieve the ref-qualifier associated with this function type. | ||||||||
4246 | RefQualifierKind getRefQualifier() const { | ||||||||
4247 | return static_cast<RefQualifierKind>(FunctionTypeBits.RefQualifier); | ||||||||
4248 | } | ||||||||
4249 | |||||||||
4250 | using param_type_iterator = const QualType *; | ||||||||
4251 | using param_type_range = llvm::iterator_range<param_type_iterator>; | ||||||||
4252 | |||||||||
4253 | param_type_range param_types() const { | ||||||||
4254 | return param_type_range(param_type_begin(), param_type_end()); | ||||||||
4255 | } | ||||||||
4256 | |||||||||
4257 | param_type_iterator param_type_begin() const { | ||||||||
4258 | return getTrailingObjects<QualType>(); | ||||||||
4259 | } | ||||||||
4260 | |||||||||
4261 | param_type_iterator param_type_end() const { | ||||||||
4262 | return param_type_begin() + getNumParams(); | ||||||||
4263 | } | ||||||||
4264 | |||||||||
4265 | using exception_iterator = const QualType *; | ||||||||
4266 | |||||||||
4267 | ArrayRef<QualType> exceptions() const { | ||||||||
4268 | return llvm::makeArrayRef(exception_begin(), exception_end()); | ||||||||
4269 | } | ||||||||
4270 | |||||||||
4271 | exception_iterator exception_begin() const { | ||||||||
4272 | return reinterpret_cast<exception_iterator>( | ||||||||
4273 | getTrailingObjects<ExceptionType>()); | ||||||||
4274 | } | ||||||||
4275 | |||||||||
4276 | exception_iterator exception_end() const { | ||||||||
4277 | return exception_begin() + getNumExceptions(); | ||||||||
4278 | } | ||||||||
4279 | |||||||||
4280 | /// Is there any interesting extra information for any of the parameters | ||||||||
4281 | /// of this function type? | ||||||||
4282 | bool hasExtParameterInfos() const { | ||||||||
4283 | return FunctionTypeBits.HasExtParameterInfos; | ||||||||
4284 | } | ||||||||
4285 | |||||||||
4286 | ArrayRef<ExtParameterInfo> getExtParameterInfos() const { | ||||||||
4287 | assert(hasExtParameterInfos())(static_cast <bool> (hasExtParameterInfos()) ? void (0) : __assert_fail ("hasExtParameterInfos()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4287, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4288 | return ArrayRef<ExtParameterInfo>(getTrailingObjects<ExtParameterInfo>(), | ||||||||
4289 | getNumParams()); | ||||||||
4290 | } | ||||||||
4291 | |||||||||
4292 | /// Return a pointer to the beginning of the array of extra parameter | ||||||||
4293 | /// information, if present, or else null if none of the parameters | ||||||||
4294 | /// carry it. This is equivalent to getExtProtoInfo().ExtParameterInfos. | ||||||||
4295 | const ExtParameterInfo *getExtParameterInfosOrNull() const { | ||||||||
4296 | if (!hasExtParameterInfos()) | ||||||||
4297 | return nullptr; | ||||||||
4298 | return getTrailingObjects<ExtParameterInfo>(); | ||||||||
4299 | } | ||||||||
4300 | |||||||||
4301 | ExtParameterInfo getExtParameterInfo(unsigned I) const { | ||||||||
4302 | assert(I < getNumParams() && "parameter index out of range")(static_cast <bool> (I < getNumParams() && "parameter index out of range" ) ? void (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4302, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4303 | if (hasExtParameterInfos()) | ||||||||
4304 | return getTrailingObjects<ExtParameterInfo>()[I]; | ||||||||
4305 | return ExtParameterInfo(); | ||||||||
4306 | } | ||||||||
4307 | |||||||||
4308 | ParameterABI getParameterABI(unsigned I) const { | ||||||||
4309 | assert(I < getNumParams() && "parameter index out of range")(static_cast <bool> (I < getNumParams() && "parameter index out of range" ) ? void (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4309, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4310 | if (hasExtParameterInfos()) | ||||||||
4311 | return getTrailingObjects<ExtParameterInfo>()[I].getABI(); | ||||||||
4312 | return ParameterABI::Ordinary; | ||||||||
4313 | } | ||||||||
4314 | |||||||||
4315 | bool isParamConsumed(unsigned I) const { | ||||||||
4316 | assert(I < getNumParams() && "parameter index out of range")(static_cast <bool> (I < getNumParams() && "parameter index out of range" ) ? void (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4316, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4317 | if (hasExtParameterInfos()) | ||||||||
4318 | return getTrailingObjects<ExtParameterInfo>()[I].isConsumed(); | ||||||||
4319 | return false; | ||||||||
4320 | } | ||||||||
4321 | |||||||||
4322 | bool isSugared() const { return false; } | ||||||||
4323 | QualType desugar() const { return QualType(this, 0); } | ||||||||
4324 | |||||||||
4325 | void printExceptionSpecification(raw_ostream &OS, | ||||||||
4326 | const PrintingPolicy &Policy) const; | ||||||||
4327 | |||||||||
4328 | static bool classof(const Type *T) { | ||||||||
4329 | return T->getTypeClass() == FunctionProto; | ||||||||
4330 | } | ||||||||
4331 | |||||||||
4332 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx); | ||||||||
4333 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, | ||||||||
4334 | param_type_iterator ArgTys, unsigned NumArgs, | ||||||||
4335 | const ExtProtoInfo &EPI, const ASTContext &Context, | ||||||||
4336 | bool Canonical); | ||||||||
4337 | }; | ||||||||
4338 | |||||||||
4339 | /// Represents the dependent type named by a dependently-scoped | ||||||||
4340 | /// typename using declaration, e.g. | ||||||||
4341 | /// using typename Base<T>::foo; | ||||||||
4342 | /// | ||||||||
4343 | /// Template instantiation turns these into the underlying type. | ||||||||
4344 | class UnresolvedUsingType : public Type { | ||||||||
4345 | friend class ASTContext; // ASTContext creates these. | ||||||||
4346 | |||||||||
4347 | UnresolvedUsingTypenameDecl *Decl; | ||||||||
4348 | |||||||||
4349 | UnresolvedUsingType(const UnresolvedUsingTypenameDecl *D) | ||||||||
4350 | : Type(UnresolvedUsing, QualType(), | ||||||||
4351 | TypeDependence::DependentInstantiation), | ||||||||
4352 | Decl(const_cast<UnresolvedUsingTypenameDecl *>(D)) {} | ||||||||
4353 | |||||||||
4354 | public: | ||||||||
4355 | UnresolvedUsingTypenameDecl *getDecl() const { return Decl; } | ||||||||
4356 | |||||||||
4357 | bool isSugared() const { return false; } | ||||||||
4358 | QualType desugar() const { return QualType(this, 0); } | ||||||||
4359 | |||||||||
4360 | static bool classof(const Type *T) { | ||||||||
4361 | return T->getTypeClass() == UnresolvedUsing; | ||||||||
4362 | } | ||||||||
4363 | |||||||||
4364 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4365 | return Profile(ID, Decl); | ||||||||
4366 | } | ||||||||
4367 | |||||||||
4368 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
4369 | UnresolvedUsingTypenameDecl *D) { | ||||||||
4370 | ID.AddPointer(D); | ||||||||
4371 | } | ||||||||
4372 | }; | ||||||||
4373 | |||||||||
4374 | class TypedefType : public Type { | ||||||||
4375 | TypedefNameDecl *Decl; | ||||||||
4376 | |||||||||
4377 | private: | ||||||||
4378 | friend class ASTContext; // ASTContext creates these. | ||||||||
4379 | |||||||||
4380 | TypedefType(TypeClass tc, const TypedefNameDecl *D, QualType underlying, | ||||||||
4381 | QualType can); | ||||||||
4382 | |||||||||
4383 | public: | ||||||||
4384 | TypedefNameDecl *getDecl() const { return Decl; } | ||||||||
4385 | |||||||||
4386 | bool isSugared() const { return true; } | ||||||||
4387 | QualType desugar() const; | ||||||||
4388 | |||||||||
4389 | static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } | ||||||||
4390 | }; | ||||||||
4391 | |||||||||
4392 | /// Sugar type that represents a type that was qualified by a qualifier written | ||||||||
4393 | /// as a macro invocation. | ||||||||
4394 | class MacroQualifiedType : public Type { | ||||||||
4395 | friend class ASTContext; // ASTContext creates these. | ||||||||
4396 | |||||||||
4397 | QualType UnderlyingTy; | ||||||||
4398 | const IdentifierInfo *MacroII; | ||||||||
4399 | |||||||||
4400 | MacroQualifiedType(QualType UnderlyingTy, QualType CanonTy, | ||||||||
4401 | const IdentifierInfo *MacroII) | ||||||||
4402 | : Type(MacroQualified, CanonTy, UnderlyingTy->getDependence()), | ||||||||
4403 | UnderlyingTy(UnderlyingTy), MacroII(MacroII) { | ||||||||
4404 | assert(isa<AttributedType>(UnderlyingTy) &&(static_cast <bool> (isa<AttributedType>(UnderlyingTy ) && "Expected a macro qualified type to only wrap attributed types." ) ? void (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4405, __extension__ __PRETTY_FUNCTION__)) | ||||||||
4405 | "Expected a macro qualified type to only wrap attributed types.")(static_cast <bool> (isa<AttributedType>(UnderlyingTy ) && "Expected a macro qualified type to only wrap attributed types." ) ? void (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4405, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4406 | } | ||||||||
4407 | |||||||||
4408 | public: | ||||||||
4409 | const IdentifierInfo *getMacroIdentifier() const { return MacroII; } | ||||||||
4410 | QualType getUnderlyingType() const { return UnderlyingTy; } | ||||||||
4411 | |||||||||
4412 | /// Return this attributed type's modified type with no qualifiers attached to | ||||||||
4413 | /// it. | ||||||||
4414 | QualType getModifiedType() const; | ||||||||
4415 | |||||||||
4416 | bool isSugared() const { return true; } | ||||||||
4417 | QualType desugar() const; | ||||||||
4418 | |||||||||
4419 | static bool classof(const Type *T) { | ||||||||
4420 | return T->getTypeClass() == MacroQualified; | ||||||||
4421 | } | ||||||||
4422 | }; | ||||||||
4423 | |||||||||
4424 | /// Represents a `typeof` (or __typeof__) expression (a GCC extension). | ||||||||
4425 | class TypeOfExprType : public Type { | ||||||||
4426 | Expr *TOExpr; | ||||||||
4427 | |||||||||
4428 | protected: | ||||||||
4429 | friend class ASTContext; // ASTContext creates these. | ||||||||
4430 | |||||||||
4431 | TypeOfExprType(Expr *E, QualType can = QualType()); | ||||||||
4432 | |||||||||
4433 | public: | ||||||||
4434 | Expr *getUnderlyingExpr() const { return TOExpr; } | ||||||||
4435 | |||||||||
4436 | /// Remove a single level of sugar. | ||||||||
4437 | QualType desugar() const; | ||||||||
4438 | |||||||||
4439 | /// Returns whether this type directly provides sugar. | ||||||||
4440 | bool isSugared() const; | ||||||||
4441 | |||||||||
4442 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } | ||||||||
4443 | }; | ||||||||
4444 | |||||||||
4445 | /// Internal representation of canonical, dependent | ||||||||
4446 | /// `typeof(expr)` types. | ||||||||
4447 | /// | ||||||||
4448 | /// This class is used internally by the ASTContext to manage | ||||||||
4449 | /// canonical, dependent types, only. Clients will only see instances | ||||||||
4450 | /// of this class via TypeOfExprType nodes. | ||||||||
4451 | class DependentTypeOfExprType | ||||||||
4452 | : public TypeOfExprType, public llvm::FoldingSetNode { | ||||||||
4453 | const ASTContext &Context; | ||||||||
4454 | |||||||||
4455 | public: | ||||||||
4456 | DependentTypeOfExprType(const ASTContext &Context, Expr *E) | ||||||||
4457 | : TypeOfExprType(E), Context(Context) {} | ||||||||
4458 | |||||||||
4459 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4460 | Profile(ID, Context, getUnderlyingExpr()); | ||||||||
4461 | } | ||||||||
4462 | |||||||||
4463 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
4464 | Expr *E); | ||||||||
4465 | }; | ||||||||
4466 | |||||||||
4467 | /// Represents `typeof(type)`, a GCC extension. | ||||||||
4468 | class TypeOfType : public Type { | ||||||||
4469 | friend class ASTContext; // ASTContext creates these. | ||||||||
4470 | |||||||||
4471 | QualType TOType; | ||||||||
4472 | |||||||||
4473 | TypeOfType(QualType T, QualType can) | ||||||||
4474 | : Type(TypeOf, can, T->getDependence()), TOType(T) { | ||||||||
4475 | assert(!isa<TypedefType>(can) && "Invalid canonical type")(static_cast <bool> (!isa<TypedefType>(can) && "Invalid canonical type") ? void (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4475, __extension__ __PRETTY_FUNCTION__)); | ||||||||
4476 | } | ||||||||
4477 | |||||||||
4478 | public: | ||||||||
4479 | QualType getUnderlyingType() const { return TOType; } | ||||||||
4480 | |||||||||
4481 | /// Remove a single level of sugar. | ||||||||
4482 | QualType desugar() const { return getUnderlyingType(); } | ||||||||
4483 | |||||||||
4484 | /// Returns whether this type directly provides sugar. | ||||||||
4485 | bool isSugared() const { return true; } | ||||||||
4486 | |||||||||
4487 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } | ||||||||
4488 | }; | ||||||||
4489 | |||||||||
4490 | /// Represents the type `decltype(expr)` (C++11). | ||||||||
4491 | class DecltypeType : public Type { | ||||||||
4492 | Expr *E; | ||||||||
4493 | QualType UnderlyingType; | ||||||||
4494 | |||||||||
4495 | protected: | ||||||||
4496 | friend class ASTContext; // ASTContext creates these. | ||||||||
4497 | |||||||||
4498 | DecltypeType(Expr *E, QualType underlyingType, QualType can = QualType()); | ||||||||
4499 | |||||||||
4500 | public: | ||||||||
4501 | Expr *getUnderlyingExpr() const { return E; } | ||||||||
4502 | QualType getUnderlyingType() const { return UnderlyingType; } | ||||||||
4503 | |||||||||
4504 | /// Remove a single level of sugar. | ||||||||
4505 | QualType desugar() const; | ||||||||
4506 | |||||||||
4507 | /// Returns whether this type directly provides sugar. | ||||||||
4508 | bool isSugared() const; | ||||||||
4509 | |||||||||
4510 | static bool classof(const Type *T) { return T->getTypeClass() == Decltype; } | ||||||||
4511 | }; | ||||||||
4512 | |||||||||
4513 | /// Internal representation of canonical, dependent | ||||||||
4514 | /// decltype(expr) types. | ||||||||
4515 | /// | ||||||||
4516 | /// This class is used internally by the ASTContext to manage | ||||||||
4517 | /// canonical, dependent types, only. Clients will only see instances | ||||||||
4518 | /// of this class via DecltypeType nodes. | ||||||||
4519 | class DependentDecltypeType : public DecltypeType, public llvm::FoldingSetNode { | ||||||||
4520 | const ASTContext &Context; | ||||||||
4521 | |||||||||
4522 | public: | ||||||||
4523 | DependentDecltypeType(const ASTContext &Context, Expr *E); | ||||||||
4524 | |||||||||
4525 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4526 | Profile(ID, Context, getUnderlyingExpr()); | ||||||||
4527 | } | ||||||||
4528 | |||||||||
4529 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
4530 | Expr *E); | ||||||||
4531 | }; | ||||||||
4532 | |||||||||
4533 | /// A unary type transform, which is a type constructed from another. | ||||||||
4534 | class UnaryTransformType : public Type { | ||||||||
4535 | public: | ||||||||
4536 | enum UTTKind { | ||||||||
4537 | EnumUnderlyingType | ||||||||
4538 | }; | ||||||||
4539 | |||||||||
4540 | private: | ||||||||
4541 | /// The untransformed type. | ||||||||
4542 | QualType BaseType; | ||||||||
4543 | |||||||||
4544 | /// The transformed type if not dependent, otherwise the same as BaseType. | ||||||||
4545 | QualType UnderlyingType; | ||||||||
4546 | |||||||||
4547 | UTTKind UKind; | ||||||||
4548 | |||||||||
4549 | protected: | ||||||||
4550 | friend class ASTContext; | ||||||||
4551 | |||||||||
4552 | UnaryTransformType(QualType BaseTy, QualType UnderlyingTy, UTTKind UKind, | ||||||||
4553 | QualType CanonicalTy); | ||||||||
4554 | |||||||||
4555 | public: | ||||||||
4556 | bool isSugared() const { return !isDependentType(); } | ||||||||
4557 | QualType desugar() const { return UnderlyingType; } | ||||||||
4558 | |||||||||
4559 | QualType getUnderlyingType() const { return UnderlyingType; } | ||||||||
4560 | QualType getBaseType() const { return BaseType; } | ||||||||
4561 | |||||||||
4562 | UTTKind getUTTKind() const { return UKind; } | ||||||||
4563 | |||||||||
4564 | static bool classof(const Type *T) { | ||||||||
4565 | return T->getTypeClass() == UnaryTransform; | ||||||||
4566 | } | ||||||||
4567 | }; | ||||||||
4568 | |||||||||
4569 | /// Internal representation of canonical, dependent | ||||||||
4570 | /// __underlying_type(type) types. | ||||||||
4571 | /// | ||||||||
4572 | /// This class is used internally by the ASTContext to manage | ||||||||
4573 | /// canonical, dependent types, only. Clients will only see instances | ||||||||
4574 | /// of this class via UnaryTransformType nodes. | ||||||||
4575 | class DependentUnaryTransformType : public UnaryTransformType, | ||||||||
4576 | public llvm::FoldingSetNode { | ||||||||
4577 | public: | ||||||||
4578 | DependentUnaryTransformType(const ASTContext &C, QualType BaseType, | ||||||||
4579 | UTTKind UKind); | ||||||||
4580 | |||||||||
4581 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4582 | Profile(ID, getBaseType(), getUTTKind()); | ||||||||
4583 | } | ||||||||
4584 | |||||||||
4585 | static void Profile(llvm::FoldingSetNodeID &ID, QualType BaseType, | ||||||||
4586 | UTTKind UKind) { | ||||||||
4587 | ID.AddPointer(BaseType.getAsOpaquePtr()); | ||||||||
4588 | ID.AddInteger((unsigned)UKind); | ||||||||
4589 | } | ||||||||
4590 | }; | ||||||||
4591 | |||||||||
4592 | class TagType : public Type { | ||||||||
4593 | friend class ASTReader; | ||||||||
4594 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
4595 | |||||||||
4596 | /// Stores the TagDecl associated with this type. The decl may point to any | ||||||||
4597 | /// TagDecl that declares the entity. | ||||||||
4598 | TagDecl *decl; | ||||||||
4599 | |||||||||
4600 | protected: | ||||||||
4601 | TagType(TypeClass TC, const TagDecl *D, QualType can); | ||||||||
4602 | |||||||||
4603 | public: | ||||||||
4604 | TagDecl *getDecl() const; | ||||||||
4605 | |||||||||
4606 | /// Determines whether this type is in the process of being defined. | ||||||||
4607 | bool isBeingDefined() const; | ||||||||
4608 | |||||||||
4609 | static bool classof(const Type *T) { | ||||||||
4610 | return T->getTypeClass() == Enum || T->getTypeClass() == Record; | ||||||||
4611 | } | ||||||||
4612 | }; | ||||||||
4613 | |||||||||
4614 | /// A helper class that allows the use of isa/cast/dyncast | ||||||||
4615 | /// to detect TagType objects of structs/unions/classes. | ||||||||
4616 | class RecordType : public TagType { | ||||||||
4617 | protected: | ||||||||
4618 | friend class ASTContext; // ASTContext creates these. | ||||||||
4619 | |||||||||
4620 | explicit RecordType(const RecordDecl *D) | ||||||||
4621 | : TagType(Record, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||
4622 | explicit RecordType(TypeClass TC, RecordDecl *D) | ||||||||
4623 | : TagType(TC, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||
4624 | |||||||||
4625 | public: | ||||||||
4626 | RecordDecl *getDecl() const { | ||||||||
4627 | return reinterpret_cast<RecordDecl*>(TagType::getDecl()); | ||||||||
4628 | } | ||||||||
4629 | |||||||||
4630 | /// Recursively check all fields in the record for const-ness. If any field | ||||||||
4631 | /// is declared const, return true. Otherwise, return false. | ||||||||
4632 | bool hasConstFields() const; | ||||||||
4633 | |||||||||
4634 | bool isSugared() const { return false; } | ||||||||
4635 | QualType desugar() const { return QualType(this, 0); } | ||||||||
4636 | |||||||||
4637 | static bool classof(const Type *T) { return T->getTypeClass() == Record; } | ||||||||
4638 | }; | ||||||||
4639 | |||||||||
4640 | /// A helper class that allows the use of isa/cast/dyncast | ||||||||
4641 | /// to detect TagType objects of enums. | ||||||||
4642 | class EnumType : public TagType { | ||||||||
4643 | friend class ASTContext; // ASTContext creates these. | ||||||||
4644 | |||||||||
4645 | explicit EnumType(const EnumDecl *D) | ||||||||
4646 | : TagType(Enum, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||
4647 | |||||||||
4648 | public: | ||||||||
4649 | EnumDecl *getDecl() const { | ||||||||
4650 | return reinterpret_cast<EnumDecl*>(TagType::getDecl()); | ||||||||
4651 | } | ||||||||
4652 | |||||||||
4653 | bool isSugared() const { return false; } | ||||||||
4654 | QualType desugar() const { return QualType(this, 0); } | ||||||||
4655 | |||||||||
4656 | static bool classof(const Type *T) { return T->getTypeClass() == Enum; } | ||||||||
4657 | }; | ||||||||
4658 | |||||||||
4659 | /// An attributed type is a type to which a type attribute has been applied. | ||||||||
4660 | /// | ||||||||
4661 | /// The "modified type" is the fully-sugared type to which the attributed | ||||||||
4662 | /// type was applied; generally it is not canonically equivalent to the | ||||||||
4663 | /// attributed type. The "equivalent type" is the minimally-desugared type | ||||||||
4664 | /// which the type is canonically equivalent to. | ||||||||
4665 | /// | ||||||||
4666 | /// For example, in the following attributed type: | ||||||||
4667 | /// int32_t __attribute__((vector_size(16))) | ||||||||
4668 | /// - the modified type is the TypedefType for int32_t | ||||||||
4669 | /// - the equivalent type is VectorType(16, int32_t) | ||||||||
4670 | /// - the canonical type is VectorType(16, int) | ||||||||
4671 | class AttributedType : public Type, public llvm::FoldingSetNode { | ||||||||
4672 | public: | ||||||||
4673 | using Kind = attr::Kind; | ||||||||
4674 | |||||||||
4675 | private: | ||||||||
4676 | friend class ASTContext; // ASTContext creates these | ||||||||
4677 | |||||||||
4678 | QualType ModifiedType; | ||||||||
4679 | QualType EquivalentType; | ||||||||
4680 | |||||||||
4681 | AttributedType(QualType canon, attr::Kind attrKind, QualType modified, | ||||||||
4682 | QualType equivalent) | ||||||||
4683 | : Type(Attributed, canon, equivalent->getDependence()), | ||||||||
4684 | ModifiedType(modified), EquivalentType(equivalent) { | ||||||||
4685 | AttributedTypeBits.AttrKind = attrKind; | ||||||||
4686 | } | ||||||||
4687 | |||||||||
4688 | public: | ||||||||
4689 | Kind getAttrKind() const { | ||||||||
4690 | return static_cast<Kind>(AttributedTypeBits.AttrKind); | ||||||||
4691 | } | ||||||||
4692 | |||||||||
4693 | QualType getModifiedType() const { return ModifiedType; } | ||||||||
4694 | QualType getEquivalentType() const { return EquivalentType; } | ||||||||
4695 | |||||||||
4696 | bool isSugared() const { return true; } | ||||||||
4697 | QualType desugar() const { return getEquivalentType(); } | ||||||||
4698 | |||||||||
4699 | /// Does this attribute behave like a type qualifier? | ||||||||
4700 | /// | ||||||||
4701 | /// A type qualifier adjusts a type to provide specialized rules for | ||||||||
4702 | /// a specific object, like the standard const and volatile qualifiers. | ||||||||
4703 | /// This includes attributes controlling things like nullability, | ||||||||
4704 | /// address spaces, and ARC ownership. The value of the object is still | ||||||||
4705 | /// largely described by the modified type. | ||||||||
4706 | /// | ||||||||
4707 | /// In contrast, many type attributes "rewrite" their modified type to | ||||||||
4708 | /// produce a fundamentally different type, not necessarily related in any | ||||||||
4709 | /// formalizable way to the original type. For example, calling convention | ||||||||
4710 | /// and vector attributes are not simple type qualifiers. | ||||||||
4711 | /// | ||||||||
4712 | /// Type qualifiers are often, but not always, reflected in the canonical | ||||||||
4713 | /// type. | ||||||||
4714 | bool isQualifier() const; | ||||||||
4715 | |||||||||
4716 | bool isMSTypeSpec() const; | ||||||||
4717 | |||||||||
4718 | bool isCallingConv() const; | ||||||||
4719 | |||||||||
4720 | llvm::Optional<NullabilityKind> getImmediateNullability() const; | ||||||||
4721 | |||||||||
4722 | /// Retrieve the attribute kind corresponding to the given | ||||||||
4723 | /// nullability kind. | ||||||||
4724 | static Kind getNullabilityAttrKind(NullabilityKind kind) { | ||||||||
4725 | switch (kind) { | ||||||||
4726 | case NullabilityKind::NonNull: | ||||||||
4727 | return attr::TypeNonNull; | ||||||||
4728 | |||||||||
4729 | case NullabilityKind::Nullable: | ||||||||
4730 | return attr::TypeNullable; | ||||||||
4731 | |||||||||
4732 | case NullabilityKind::NullableResult: | ||||||||
4733 | return attr::TypeNullableResult; | ||||||||
4734 | |||||||||
4735 | case NullabilityKind::Unspecified: | ||||||||
4736 | return attr::TypeNullUnspecified; | ||||||||
4737 | } | ||||||||
4738 | llvm_unreachable("Unknown nullability kind.")::llvm::llvm_unreachable_internal("Unknown nullability kind." , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 4738); | ||||||||
4739 | } | ||||||||
4740 | |||||||||
4741 | /// Strip off the top-level nullability annotation on the given | ||||||||
4742 | /// type, if it's there. | ||||||||
4743 | /// | ||||||||
4744 | /// \param T The type to strip. If the type is exactly an | ||||||||
4745 | /// AttributedType specifying nullability (without looking through | ||||||||
4746 | /// type sugar), the nullability is returned and this type changed | ||||||||
4747 | /// to the underlying modified type. | ||||||||
4748 | /// | ||||||||
4749 | /// \returns the top-level nullability, if present. | ||||||||
4750 | static Optional<NullabilityKind> stripOuterNullability(QualType &T); | ||||||||
4751 | |||||||||
4752 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4753 | Profile(ID, getAttrKind(), ModifiedType, EquivalentType); | ||||||||
4754 | } | ||||||||
4755 | |||||||||
4756 | static void Profile(llvm::FoldingSetNodeID &ID, Kind attrKind, | ||||||||
4757 | QualType modified, QualType equivalent) { | ||||||||
4758 | ID.AddInteger(attrKind); | ||||||||
4759 | ID.AddPointer(modified.getAsOpaquePtr()); | ||||||||
4760 | ID.AddPointer(equivalent.getAsOpaquePtr()); | ||||||||
4761 | } | ||||||||
4762 | |||||||||
4763 | static bool classof(const Type *T) { | ||||||||
4764 | return T->getTypeClass() == Attributed; | ||||||||
4765 | } | ||||||||
4766 | }; | ||||||||
4767 | |||||||||
4768 | class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { | ||||||||
4769 | friend class ASTContext; // ASTContext creates these | ||||||||
4770 | |||||||||
4771 | // Helper data collector for canonical types. | ||||||||
4772 | struct CanonicalTTPTInfo { | ||||||||
4773 | unsigned Depth : 15; | ||||||||
4774 | unsigned ParameterPack : 1; | ||||||||
4775 | unsigned Index : 16; | ||||||||
4776 | }; | ||||||||
4777 | |||||||||
4778 | union { | ||||||||
4779 | // Info for the canonical type. | ||||||||
4780 | CanonicalTTPTInfo CanTTPTInfo; | ||||||||
4781 | |||||||||
4782 | // Info for the non-canonical type. | ||||||||
4783 | TemplateTypeParmDecl *TTPDecl; | ||||||||
4784 | }; | ||||||||
4785 | |||||||||
4786 | /// Build a non-canonical type. | ||||||||
4787 | TemplateTypeParmType(TemplateTypeParmDecl *TTPDecl, QualType Canon) | ||||||||
4788 | : Type(TemplateTypeParm, Canon, | ||||||||
4789 | TypeDependence::DependentInstantiation | | ||||||||
4790 | (Canon->getDependence() & TypeDependence::UnexpandedPack)), | ||||||||
4791 | TTPDecl(TTPDecl) {} | ||||||||
4792 | |||||||||
4793 | /// Build the canonical type. | ||||||||
4794 | TemplateTypeParmType(unsigned D, unsigned I, bool PP) | ||||||||
4795 | : Type(TemplateTypeParm, QualType(this, 0), | ||||||||
4796 | TypeDependence::DependentInstantiation | | ||||||||
4797 | (PP ? TypeDependence::UnexpandedPack : TypeDependence::None)) { | ||||||||
4798 | CanTTPTInfo.Depth = D; | ||||||||
4799 | CanTTPTInfo.Index = I; | ||||||||
4800 | CanTTPTInfo.ParameterPack = PP; | ||||||||
4801 | } | ||||||||
4802 | |||||||||
4803 | const CanonicalTTPTInfo& getCanTTPTInfo() const { | ||||||||
4804 | QualType Can = getCanonicalTypeInternal(); | ||||||||
4805 | return Can->castAs<TemplateTypeParmType>()->CanTTPTInfo; | ||||||||
4806 | } | ||||||||
4807 | |||||||||
4808 | public: | ||||||||
4809 | unsigned getDepth() const { return getCanTTPTInfo().Depth; } | ||||||||
4810 | unsigned getIndex() const { return getCanTTPTInfo().Index; } | ||||||||
4811 | bool isParameterPack() const { return getCanTTPTInfo().ParameterPack; } | ||||||||
4812 | |||||||||
4813 | TemplateTypeParmDecl *getDecl() const { | ||||||||
4814 | return isCanonicalUnqualified() ? nullptr : TTPDecl; | ||||||||
4815 | } | ||||||||
4816 | |||||||||
4817 | IdentifierInfo *getIdentifier() const; | ||||||||
4818 | |||||||||
4819 | bool isSugared() const { return false; } | ||||||||
4820 | QualType desugar() const { return QualType(this, 0); } | ||||||||
4821 | |||||||||
4822 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4823 | Profile(ID, getDepth(), getIndex(), isParameterPack(), getDecl()); | ||||||||
4824 | } | ||||||||
4825 | |||||||||
4826 | static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, | ||||||||
4827 | unsigned Index, bool ParameterPack, | ||||||||
4828 | TemplateTypeParmDecl *TTPDecl) { | ||||||||
4829 | ID.AddInteger(Depth); | ||||||||
4830 | ID.AddInteger(Index); | ||||||||
4831 | ID.AddBoolean(ParameterPack); | ||||||||
4832 | ID.AddPointer(TTPDecl); | ||||||||
4833 | } | ||||||||
4834 | |||||||||
4835 | static bool classof(const Type *T) { | ||||||||
4836 | return T->getTypeClass() == TemplateTypeParm; | ||||||||
4837 | } | ||||||||
4838 | }; | ||||||||
4839 | |||||||||
4840 | /// Represents the result of substituting a type for a template | ||||||||
4841 | /// type parameter. | ||||||||
4842 | /// | ||||||||
4843 | /// Within an instantiated template, all template type parameters have | ||||||||
4844 | /// been replaced with these. They are used solely to record that a | ||||||||
4845 | /// type was originally written as a template type parameter; | ||||||||
4846 | /// therefore they are never canonical. | ||||||||
4847 | class SubstTemplateTypeParmType : public Type, public llvm::FoldingSetNode { | ||||||||
4848 | friend class ASTContext; | ||||||||
4849 | |||||||||
4850 | // The original type parameter. | ||||||||
4851 | const TemplateTypeParmType *Replaced; | ||||||||
4852 | |||||||||
4853 | SubstTemplateTypeParmType(const TemplateTypeParmType *Param, QualType Canon) | ||||||||
4854 | : Type(SubstTemplateTypeParm, Canon, Canon->getDependence()), | ||||||||
4855 | Replaced(Param) {} | ||||||||
4856 | |||||||||
4857 | public: | ||||||||
4858 | /// Gets the template parameter that was substituted for. | ||||||||
4859 | const TemplateTypeParmType *getReplacedParameter() const { | ||||||||
4860 | return Replaced; | ||||||||
4861 | } | ||||||||
4862 | |||||||||
4863 | /// Gets the type that was substituted for the template | ||||||||
4864 | /// parameter. | ||||||||
4865 | QualType getReplacementType() const { | ||||||||
4866 | return getCanonicalTypeInternal(); | ||||||||
4867 | } | ||||||||
4868 | |||||||||
4869 | bool isSugared() const { return true; } | ||||||||
4870 | QualType desugar() const { return getReplacementType(); } | ||||||||
4871 | |||||||||
4872 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
4873 | Profile(ID, getReplacedParameter(), getReplacementType()); | ||||||||
4874 | } | ||||||||
4875 | |||||||||
4876 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
4877 | const TemplateTypeParmType *Replaced, | ||||||||
4878 | QualType Replacement) { | ||||||||
4879 | ID.AddPointer(Replaced); | ||||||||
4880 | ID.AddPointer(Replacement.getAsOpaquePtr()); | ||||||||
4881 | } | ||||||||
4882 | |||||||||
4883 | static bool classof(const Type *T) { | ||||||||
4884 | return T->getTypeClass() == SubstTemplateTypeParm; | ||||||||
4885 | } | ||||||||
4886 | }; | ||||||||
4887 | |||||||||
4888 | /// Represents the result of substituting a set of types for a template | ||||||||
4889 | /// type parameter pack. | ||||||||
4890 | /// | ||||||||
4891 | /// When a pack expansion in the source code contains multiple parameter packs | ||||||||
4892 | /// and those parameter packs correspond to different levels of template | ||||||||
4893 | /// parameter lists, this type node is used to represent a template type | ||||||||
4894 | /// parameter pack from an outer level, which has already had its argument pack | ||||||||
4895 | /// substituted but that still lives within a pack expansion that itself | ||||||||
4896 | /// could not be instantiated. When actually performing a substitution into | ||||||||
4897 | /// that pack expansion (e.g., when all template parameters have corresponding | ||||||||
4898 | /// arguments), this type will be replaced with the \c SubstTemplateTypeParmType | ||||||||
4899 | /// at the current pack substitution index. | ||||||||
4900 | class SubstTemplateTypeParmPackType : public Type, public llvm::FoldingSetNode { | ||||||||
4901 | friend class ASTContext; | ||||||||
4902 | |||||||||
4903 | /// The original type parameter. | ||||||||
4904 | const TemplateTypeParmType *Replaced; | ||||||||
4905 | |||||||||
4906 | /// A pointer to the set of template arguments that this | ||||||||
4907 | /// parameter pack is instantiated with. | ||||||||
4908 | const TemplateArgument *Arguments; | ||||||||
4909 | |||||||||
4910 | SubstTemplateTypeParmPackType(const TemplateTypeParmType *Param, | ||||||||
4911 | QualType Canon, | ||||||||
4912 | const TemplateArgument &ArgPack); | ||||||||
4913 | |||||||||
4914 | public: | ||||||||
4915 | IdentifierInfo *getIdentifier() const { return Replaced->getIdentifier(); } | ||||||||
4916 | |||||||||
4917 | /// Gets the template parameter that was substituted for. | ||||||||
4918 | const TemplateTypeParmType *getReplacedParameter() const { | ||||||||
4919 | return Replaced; | ||||||||
4920 | } | ||||||||
4921 | |||||||||
4922 | unsigned getNumArgs() const { | ||||||||
4923 | return SubstTemplateTypeParmPackTypeBits.NumArgs; | ||||||||
4924 | } | ||||||||
4925 | |||||||||
4926 | bool isSugared() const { return false; } | ||||||||
4927 | QualType desugar() const { return QualType(this, 0); } | ||||||||
4928 | |||||||||
4929 | TemplateArgument getArgumentPack() const; | ||||||||
4930 | |||||||||
4931 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||
4932 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
4933 | const TemplateTypeParmType *Replaced, | ||||||||
4934 | const TemplateArgument &ArgPack); | ||||||||
4935 | |||||||||
4936 | static bool classof(const Type *T) { | ||||||||
4937 | return T->getTypeClass() == SubstTemplateTypeParmPack; | ||||||||
4938 | } | ||||||||
4939 | }; | ||||||||
4940 | |||||||||
4941 | /// Common base class for placeholders for types that get replaced by | ||||||||
4942 | /// placeholder type deduction: C++11 auto, C++14 decltype(auto), C++17 deduced | ||||||||
4943 | /// class template types, and constrained type names. | ||||||||
4944 | /// | ||||||||
4945 | /// These types are usually a placeholder for a deduced type. However, before | ||||||||
4946 | /// the initializer is attached, or (usually) if the initializer is | ||||||||
4947 | /// type-dependent, there is no deduced type and the type is canonical. In | ||||||||
4948 | /// the latter case, it is also a dependent type. | ||||||||
4949 | class DeducedType : public Type { | ||||||||
4950 | protected: | ||||||||
4951 | DeducedType(TypeClass TC, QualType DeducedAsType, | ||||||||
4952 | TypeDependence ExtraDependence) | ||||||||
4953 | : Type(TC, | ||||||||
4954 | // FIXME: Retain the sugared deduced type? | ||||||||
4955 | DeducedAsType.isNull() ? QualType(this, 0) | ||||||||
4956 | : DeducedAsType.getCanonicalType(), | ||||||||
4957 | ExtraDependence | (DeducedAsType.isNull() | ||||||||
4958 | ? TypeDependence::None | ||||||||
4959 | : DeducedAsType->getDependence() & | ||||||||
4960 | ~TypeDependence::VariablyModified)) {} | ||||||||
4961 | |||||||||
4962 | public: | ||||||||
4963 | bool isSugared() const { return !isCanonicalUnqualified(); } | ||||||||
4964 | QualType desugar() const { return getCanonicalTypeInternal(); } | ||||||||
4965 | |||||||||
4966 | /// Get the type deduced for this placeholder type, or null if it's | ||||||||
4967 | /// either not been deduced or was deduced to a dependent type. | ||||||||
4968 | QualType getDeducedType() const { | ||||||||
4969 | return !isCanonicalUnqualified() ? getCanonicalTypeInternal() : QualType(); | ||||||||
4970 | } | ||||||||
4971 | bool isDeduced() const { | ||||||||
4972 | return !isCanonicalUnqualified() || isDependentType(); | ||||||||
4973 | } | ||||||||
4974 | |||||||||
4975 | static bool classof(const Type *T) { | ||||||||
4976 | return T->getTypeClass() == Auto || | ||||||||
4977 | T->getTypeClass() == DeducedTemplateSpecialization; | ||||||||
4978 | } | ||||||||
4979 | }; | ||||||||
4980 | |||||||||
4981 | /// Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained | ||||||||
4982 | /// by a type-constraint. | ||||||||
4983 | class alignas(8) AutoType : public DeducedType, public llvm::FoldingSetNode { | ||||||||
4984 | friend class ASTContext; // ASTContext creates these | ||||||||
4985 | |||||||||
4986 | ConceptDecl *TypeConstraintConcept; | ||||||||
4987 | |||||||||
4988 | AutoType(QualType DeducedAsType, AutoTypeKeyword Keyword, | ||||||||
4989 | TypeDependence ExtraDependence, ConceptDecl *CD, | ||||||||
4990 | ArrayRef<TemplateArgument> TypeConstraintArgs); | ||||||||
4991 | |||||||||
4992 | const TemplateArgument *getArgBuffer() const { | ||||||||
4993 | return reinterpret_cast<const TemplateArgument*>(this+1); | ||||||||
4994 | } | ||||||||
4995 | |||||||||
4996 | TemplateArgument *getArgBuffer() { | ||||||||
4997 | return reinterpret_cast<TemplateArgument*>(this+1); | ||||||||
4998 | } | ||||||||
4999 | |||||||||
5000 | public: | ||||||||
5001 | /// Retrieve the template arguments. | ||||||||
5002 | const TemplateArgument *getArgs() const { | ||||||||
5003 | return getArgBuffer(); | ||||||||
5004 | } | ||||||||
5005 | |||||||||
5006 | /// Retrieve the number of template arguments. | ||||||||
5007 | unsigned getNumArgs() const { | ||||||||
5008 | return AutoTypeBits.NumArgs; | ||||||||
5009 | } | ||||||||
5010 | |||||||||
5011 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||
5012 | |||||||||
5013 | ArrayRef<TemplateArgument> getTypeConstraintArguments() const { | ||||||||
5014 | return {getArgs(), getNumArgs()}; | ||||||||
5015 | } | ||||||||
5016 | |||||||||
5017 | ConceptDecl *getTypeConstraintConcept() const { | ||||||||
5018 | return TypeConstraintConcept; | ||||||||
5019 | } | ||||||||
5020 | |||||||||
5021 | bool isConstrained() const { | ||||||||
5022 | return TypeConstraintConcept != nullptr; | ||||||||
5023 | } | ||||||||
5024 | |||||||||
5025 | bool isDecltypeAuto() const { | ||||||||
5026 | return getKeyword() == AutoTypeKeyword::DecltypeAuto; | ||||||||
5027 | } | ||||||||
5028 | |||||||||
5029 | AutoTypeKeyword getKeyword() const { | ||||||||
5030 | return (AutoTypeKeyword)AutoTypeBits.Keyword; | ||||||||
5031 | } | ||||||||
5032 | |||||||||
5033 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { | ||||||||
5034 | Profile(ID, Context, getDeducedType(), getKeyword(), isDependentType(), | ||||||||
5035 | getTypeConstraintConcept(), getTypeConstraintArguments()); | ||||||||
5036 | } | ||||||||
5037 | |||||||||
5038 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
5039 | QualType Deduced, AutoTypeKeyword Keyword, | ||||||||
5040 | bool IsDependent, ConceptDecl *CD, | ||||||||
5041 | ArrayRef<TemplateArgument> Arguments); | ||||||||
5042 | |||||||||
5043 | static bool classof(const Type *T) { | ||||||||
5044 | return T->getTypeClass() == Auto; | ||||||||
5045 | } | ||||||||
5046 | }; | ||||||||
5047 | |||||||||
5048 | /// Represents a C++17 deduced template specialization type. | ||||||||
5049 | class DeducedTemplateSpecializationType : public DeducedType, | ||||||||
5050 | public llvm::FoldingSetNode { | ||||||||
5051 | friend class ASTContext; // ASTContext creates these | ||||||||
5052 | |||||||||
5053 | /// The name of the template whose arguments will be deduced. | ||||||||
5054 | TemplateName Template; | ||||||||
5055 | |||||||||
5056 | DeducedTemplateSpecializationType(TemplateName Template, | ||||||||
5057 | QualType DeducedAsType, | ||||||||
5058 | bool IsDeducedAsDependent) | ||||||||
5059 | : DeducedType(DeducedTemplateSpecialization, DeducedAsType, | ||||||||
5060 | toTypeDependence(Template.getDependence()) | | ||||||||
5061 | (IsDeducedAsDependent | ||||||||
5062 | ? TypeDependence::DependentInstantiation | ||||||||
5063 | : TypeDependence::None)), | ||||||||
5064 | Template(Template) {} | ||||||||
5065 | |||||||||
5066 | public: | ||||||||
5067 | /// Retrieve the name of the template that we are deducing. | ||||||||
5068 | TemplateName getTemplateName() const { return Template;} | ||||||||
5069 | |||||||||
5070 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
5071 | Profile(ID, getTemplateName(), getDeducedType(), isDependentType()); | ||||||||
5072 | } | ||||||||
5073 | |||||||||
5074 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName Template, | ||||||||
5075 | QualType Deduced, bool IsDependent) { | ||||||||
5076 | Template.Profile(ID); | ||||||||
5077 | ID.AddPointer(Deduced.getAsOpaquePtr()); | ||||||||
5078 | ID.AddBoolean(IsDependent); | ||||||||
5079 | } | ||||||||
5080 | |||||||||
5081 | static bool classof(const Type *T) { | ||||||||
5082 | return T->getTypeClass() == DeducedTemplateSpecialization; | ||||||||
5083 | } | ||||||||
5084 | }; | ||||||||
5085 | |||||||||
5086 | /// Represents a type template specialization; the template | ||||||||
5087 | /// must be a class template, a type alias template, or a template | ||||||||
5088 | /// template parameter. A template which cannot be resolved to one of | ||||||||
5089 | /// these, e.g. because it is written with a dependent scope | ||||||||
5090 | /// specifier, is instead represented as a | ||||||||
5091 | /// @c DependentTemplateSpecializationType. | ||||||||
5092 | /// | ||||||||
5093 | /// A non-dependent template specialization type is always "sugar", | ||||||||
5094 | /// typically for a \c RecordType. For example, a class template | ||||||||
5095 | /// specialization type of \c vector<int> will refer to a tag type for | ||||||||
5096 | /// the instantiation \c std::vector<int, std::allocator<int>> | ||||||||
5097 | /// | ||||||||
5098 | /// Template specializations are dependent if either the template or | ||||||||
5099 | /// any of the template arguments are dependent, in which case the | ||||||||
5100 | /// type may also be canonical. | ||||||||
5101 | /// | ||||||||
5102 | /// Instances of this type are allocated with a trailing array of | ||||||||
5103 | /// TemplateArguments, followed by a QualType representing the | ||||||||
5104 | /// non-canonical aliased type when the template is a type alias | ||||||||
5105 | /// template. | ||||||||
5106 | class alignas(8) TemplateSpecializationType | ||||||||
5107 | : public Type, | ||||||||
5108 | public llvm::FoldingSetNode { | ||||||||
5109 | friend class ASTContext; // ASTContext creates these | ||||||||
5110 | |||||||||
5111 | /// The name of the template being specialized. This is | ||||||||
5112 | /// either a TemplateName::Template (in which case it is a | ||||||||
5113 | /// ClassTemplateDecl*, a TemplateTemplateParmDecl*, or a | ||||||||
5114 | /// TypeAliasTemplateDecl*), a | ||||||||
5115 | /// TemplateName::SubstTemplateTemplateParmPack, or a | ||||||||
5116 | /// TemplateName::SubstTemplateTemplateParm (in which case the | ||||||||
5117 | /// replacement must, recursively, be one of these). | ||||||||
5118 | TemplateName Template; | ||||||||
5119 | |||||||||
5120 | TemplateSpecializationType(TemplateName T, | ||||||||
5121 | ArrayRef<TemplateArgument> Args, | ||||||||
5122 | QualType Canon, | ||||||||
5123 | QualType Aliased); | ||||||||
5124 | |||||||||
5125 | public: | ||||||||
5126 | /// Determine whether any of the given template arguments are dependent. | ||||||||
5127 | /// | ||||||||
5128 | /// The converted arguments should be supplied when known; whether an | ||||||||
5129 | /// argument is dependent can depend on the conversions performed on it | ||||||||
5130 | /// (for example, a 'const int' passed as a template argument might be | ||||||||
5131 | /// dependent if the parameter is a reference but non-dependent if the | ||||||||
5132 | /// parameter is an int). | ||||||||
5133 | /// | ||||||||
5134 | /// Note that the \p Args parameter is unused: this is intentional, to remind | ||||||||
5135 | /// the caller that they need to pass in the converted arguments, not the | ||||||||
5136 | /// specified arguments. | ||||||||
5137 | static bool | ||||||||
5138 | anyDependentTemplateArguments(ArrayRef<TemplateArgumentLoc> Args, | ||||||||
5139 | ArrayRef<TemplateArgument> Converted); | ||||||||
5140 | static bool | ||||||||
5141 | anyDependentTemplateArguments(const TemplateArgumentListInfo &, | ||||||||
5142 | ArrayRef<TemplateArgument> Converted); | ||||||||
5143 | static bool anyInstantiationDependentTemplateArguments( | ||||||||
5144 | ArrayRef<TemplateArgumentLoc> Args); | ||||||||
5145 | |||||||||
5146 | /// True if this template specialization type matches a current | ||||||||
5147 | /// instantiation in the context in which it is found. | ||||||||
5148 | bool isCurrentInstantiation() const { | ||||||||
5149 | return isa<InjectedClassNameType>(getCanonicalTypeInternal()); | ||||||||
5150 | } | ||||||||
5151 | |||||||||
5152 | /// Determine if this template specialization type is for a type alias | ||||||||
5153 | /// template that has been substituted. | ||||||||
5154 | /// | ||||||||
5155 | /// Nearly every template specialization type whose template is an alias | ||||||||
5156 | /// template will be substituted. However, this is not the case when | ||||||||
5157 | /// the specialization contains a pack expansion but the template alias | ||||||||
5158 | /// does not have a corresponding parameter pack, e.g., | ||||||||
5159 | /// | ||||||||
5160 | /// \code | ||||||||
5161 | /// template<typename T, typename U, typename V> struct S; | ||||||||
5162 | /// template<typename T, typename U> using A = S<T, int, U>; | ||||||||
5163 | /// template<typename... Ts> struct X { | ||||||||
5164 | /// typedef A<Ts...> type; // not a type alias | ||||||||
5165 | /// }; | ||||||||
5166 | /// \endcode | ||||||||
5167 | bool isTypeAlias() const { return TemplateSpecializationTypeBits.TypeAlias; } | ||||||||
5168 | |||||||||
5169 | /// Get the aliased type, if this is a specialization of a type alias | ||||||||
5170 | /// template. | ||||||||
5171 | QualType getAliasedType() const { | ||||||||
5172 | assert(isTypeAlias() && "not a type alias template specialization")(static_cast <bool> (isTypeAlias() && "not a type alias template specialization" ) ? void (0) : __assert_fail ("isTypeAlias() && \"not a type alias template specialization\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5172, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5173 | return *reinterpret_cast<const QualType*>(end()); | ||||||||
5174 | } | ||||||||
5175 | |||||||||
5176 | using iterator = const TemplateArgument *; | ||||||||
5177 | |||||||||
5178 | iterator begin() const { return getArgs(); } | ||||||||
5179 | iterator end() const; // defined inline in TemplateBase.h | ||||||||
5180 | |||||||||
5181 | /// Retrieve the name of the template that we are specializing. | ||||||||
5182 | TemplateName getTemplateName() const { return Template; } | ||||||||
5183 | |||||||||
5184 | /// Retrieve the template arguments. | ||||||||
5185 | const TemplateArgument *getArgs() const { | ||||||||
5186 | return reinterpret_cast<const TemplateArgument *>(this + 1); | ||||||||
5187 | } | ||||||||
5188 | |||||||||
5189 | /// Retrieve the number of template arguments. | ||||||||
5190 | unsigned getNumArgs() const { | ||||||||
5191 | return TemplateSpecializationTypeBits.NumArgs; | ||||||||
5192 | } | ||||||||
5193 | |||||||||
5194 | /// Retrieve a specific template argument as a type. | ||||||||
5195 | /// \pre \c isArgType(Arg) | ||||||||
5196 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||
5197 | |||||||||
5198 | ArrayRef<TemplateArgument> template_arguments() const { | ||||||||
5199 | return {getArgs(), getNumArgs()}; | ||||||||
5200 | } | ||||||||
5201 | |||||||||
5202 | bool isSugared() const { | ||||||||
5203 | return !isDependentType() || isCurrentInstantiation() || isTypeAlias(); | ||||||||
5204 | } | ||||||||
5205 | |||||||||
5206 | QualType desugar() const { | ||||||||
5207 | return isTypeAlias() ? getAliasedType() : getCanonicalTypeInternal(); | ||||||||
5208 | } | ||||||||
5209 | |||||||||
5210 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { | ||||||||
5211 | Profile(ID, Template, template_arguments(), Ctx); | ||||||||
5212 | if (isTypeAlias()) | ||||||||
5213 | getAliasedType().Profile(ID); | ||||||||
5214 | } | ||||||||
5215 | |||||||||
5216 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName T, | ||||||||
5217 | ArrayRef<TemplateArgument> Args, | ||||||||
5218 | const ASTContext &Context); | ||||||||
5219 | |||||||||
5220 | static bool classof(const Type *T) { | ||||||||
5221 | return T->getTypeClass() == TemplateSpecialization; | ||||||||
5222 | } | ||||||||
5223 | }; | ||||||||
5224 | |||||||||
5225 | /// Print a template argument list, including the '<' and '>' | ||||||||
5226 | /// enclosing the template arguments. | ||||||||
5227 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||
5228 | ArrayRef<TemplateArgument> Args, | ||||||||
5229 | const PrintingPolicy &Policy, | ||||||||
5230 | const TemplateParameterList *TPL = nullptr); | ||||||||
5231 | |||||||||
5232 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||
5233 | ArrayRef<TemplateArgumentLoc> Args, | ||||||||
5234 | const PrintingPolicy &Policy, | ||||||||
5235 | const TemplateParameterList *TPL = nullptr); | ||||||||
5236 | |||||||||
5237 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||
5238 | const TemplateArgumentListInfo &Args, | ||||||||
5239 | const PrintingPolicy &Policy, | ||||||||
5240 | const TemplateParameterList *TPL = nullptr); | ||||||||
5241 | |||||||||
5242 | /// The injected class name of a C++ class template or class | ||||||||
5243 | /// template partial specialization. Used to record that a type was | ||||||||
5244 | /// spelled with a bare identifier rather than as a template-id; the | ||||||||
5245 | /// equivalent for non-templated classes is just RecordType. | ||||||||
5246 | /// | ||||||||
5247 | /// Injected class name types are always dependent. Template | ||||||||
5248 | /// instantiation turns these into RecordTypes. | ||||||||
5249 | /// | ||||||||
5250 | /// Injected class name types are always canonical. This works | ||||||||
5251 | /// because it is impossible to compare an injected class name type | ||||||||
5252 | /// with the corresponding non-injected template type, for the same | ||||||||
5253 | /// reason that it is impossible to directly compare template | ||||||||
5254 | /// parameters from different dependent contexts: injected class name | ||||||||
5255 | /// types can only occur within the scope of a particular templated | ||||||||
5256 | /// declaration, and within that scope every template specialization | ||||||||
5257 | /// will canonicalize to the injected class name (when appropriate | ||||||||
5258 | /// according to the rules of the language). | ||||||||
5259 | class InjectedClassNameType : public Type { | ||||||||
5260 | friend class ASTContext; // ASTContext creates these. | ||||||||
5261 | friend class ASTNodeImporter; | ||||||||
5262 | friend class ASTReader; // FIXME: ASTContext::getInjectedClassNameType is not | ||||||||
5263 | // currently suitable for AST reading, too much | ||||||||
5264 | // interdependencies. | ||||||||
5265 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
5266 | |||||||||
5267 | CXXRecordDecl *Decl; | ||||||||
5268 | |||||||||
5269 | /// The template specialization which this type represents. | ||||||||
5270 | /// For example, in | ||||||||
5271 | /// template <class T> class A { ... }; | ||||||||
5272 | /// this is A<T>, whereas in | ||||||||
5273 | /// template <class X, class Y> class A<B<X,Y> > { ... }; | ||||||||
5274 | /// this is A<B<X,Y> >. | ||||||||
5275 | /// | ||||||||
5276 | /// It is always unqualified, always a template specialization type, | ||||||||
5277 | /// and always dependent. | ||||||||
5278 | QualType InjectedType; | ||||||||
5279 | |||||||||
5280 | InjectedClassNameType(CXXRecordDecl *D, QualType TST) | ||||||||
5281 | : Type(InjectedClassName, QualType(), | ||||||||
5282 | TypeDependence::DependentInstantiation), | ||||||||
5283 | Decl(D), InjectedType(TST) { | ||||||||
5284 | assert(isa<TemplateSpecializationType>(TST))(static_cast <bool> (isa<TemplateSpecializationType> (TST)) ? void (0) : __assert_fail ("isa<TemplateSpecializationType>(TST)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5284, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5285 | assert(!TST.hasQualifiers())(static_cast <bool> (!TST.hasQualifiers()) ? void (0) : __assert_fail ("!TST.hasQualifiers()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5285, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5286 | assert(TST->isDependentType())(static_cast <bool> (TST->isDependentType()) ? void ( 0) : __assert_fail ("TST->isDependentType()", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5286, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5287 | } | ||||||||
5288 | |||||||||
5289 | public: | ||||||||
5290 | QualType getInjectedSpecializationType() const { return InjectedType; } | ||||||||
5291 | |||||||||
5292 | const TemplateSpecializationType *getInjectedTST() const { | ||||||||
5293 | return cast<TemplateSpecializationType>(InjectedType.getTypePtr()); | ||||||||
5294 | } | ||||||||
5295 | |||||||||
5296 | TemplateName getTemplateName() const { | ||||||||
5297 | return getInjectedTST()->getTemplateName(); | ||||||||
5298 | } | ||||||||
5299 | |||||||||
5300 | CXXRecordDecl *getDecl() const; | ||||||||
5301 | |||||||||
5302 | bool isSugared() const { return false; } | ||||||||
5303 | QualType desugar() const { return QualType(this, 0); } | ||||||||
5304 | |||||||||
5305 | static bool classof(const Type *T) { | ||||||||
5306 | return T->getTypeClass() == InjectedClassName; | ||||||||
5307 | } | ||||||||
5308 | }; | ||||||||
5309 | |||||||||
5310 | /// The kind of a tag type. | ||||||||
5311 | enum TagTypeKind { | ||||||||
5312 | /// The "struct" keyword. | ||||||||
5313 | TTK_Struct, | ||||||||
5314 | |||||||||
5315 | /// The "__interface" keyword. | ||||||||
5316 | TTK_Interface, | ||||||||
5317 | |||||||||
5318 | /// The "union" keyword. | ||||||||
5319 | TTK_Union, | ||||||||
5320 | |||||||||
5321 | /// The "class" keyword. | ||||||||
5322 | TTK_Class, | ||||||||
5323 | |||||||||
5324 | /// The "enum" keyword. | ||||||||
5325 | TTK_Enum | ||||||||
5326 | }; | ||||||||
5327 | |||||||||
5328 | /// The elaboration keyword that precedes a qualified type name or | ||||||||
5329 | /// introduces an elaborated-type-specifier. | ||||||||
5330 | enum ElaboratedTypeKeyword { | ||||||||
5331 | /// The "struct" keyword introduces the elaborated-type-specifier. | ||||||||
5332 | ETK_Struct, | ||||||||
5333 | |||||||||
5334 | /// The "__interface" keyword introduces the elaborated-type-specifier. | ||||||||
5335 | ETK_Interface, | ||||||||
5336 | |||||||||
5337 | /// The "union" keyword introduces the elaborated-type-specifier. | ||||||||
5338 | ETK_Union, | ||||||||
5339 | |||||||||
5340 | /// The "class" keyword introduces the elaborated-type-specifier. | ||||||||
5341 | ETK_Class, | ||||||||
5342 | |||||||||
5343 | /// The "enum" keyword introduces the elaborated-type-specifier. | ||||||||
5344 | ETK_Enum, | ||||||||
5345 | |||||||||
5346 | /// The "typename" keyword precedes the qualified type name, e.g., | ||||||||
5347 | /// \c typename T::type. | ||||||||
5348 | ETK_Typename, | ||||||||
5349 | |||||||||
5350 | /// No keyword precedes the qualified type name. | ||||||||
5351 | ETK_None | ||||||||
5352 | }; | ||||||||
5353 | |||||||||
5354 | /// A helper class for Type nodes having an ElaboratedTypeKeyword. | ||||||||
5355 | /// The keyword in stored in the free bits of the base class. | ||||||||
5356 | /// Also provides a few static helpers for converting and printing | ||||||||
5357 | /// elaborated type keyword and tag type kind enumerations. | ||||||||
5358 | class TypeWithKeyword : public Type { | ||||||||
5359 | protected: | ||||||||
5360 | TypeWithKeyword(ElaboratedTypeKeyword Keyword, TypeClass tc, | ||||||||
5361 | QualType Canonical, TypeDependence Dependence) | ||||||||
5362 | : Type(tc, Canonical, Dependence) { | ||||||||
5363 | TypeWithKeywordBits.Keyword = Keyword; | ||||||||
5364 | } | ||||||||
5365 | |||||||||
5366 | public: | ||||||||
5367 | ElaboratedTypeKeyword getKeyword() const { | ||||||||
5368 | return static_cast<ElaboratedTypeKeyword>(TypeWithKeywordBits.Keyword); | ||||||||
5369 | } | ||||||||
5370 | |||||||||
5371 | /// Converts a type specifier (DeclSpec::TST) into an elaborated type keyword. | ||||||||
5372 | static ElaboratedTypeKeyword getKeywordForTypeSpec(unsigned TypeSpec); | ||||||||
5373 | |||||||||
5374 | /// Converts a type specifier (DeclSpec::TST) into a tag type kind. | ||||||||
5375 | /// It is an error to provide a type specifier which *isn't* a tag kind here. | ||||||||
5376 | static TagTypeKind getTagTypeKindForTypeSpec(unsigned TypeSpec); | ||||||||
5377 | |||||||||
5378 | /// Converts a TagTypeKind into an elaborated type keyword. | ||||||||
5379 | static ElaboratedTypeKeyword getKeywordForTagTypeKind(TagTypeKind Tag); | ||||||||
5380 | |||||||||
5381 | /// Converts an elaborated type keyword into a TagTypeKind. | ||||||||
5382 | /// It is an error to provide an elaborated type keyword | ||||||||
5383 | /// which *isn't* a tag kind here. | ||||||||
5384 | static TagTypeKind getTagTypeKindForKeyword(ElaboratedTypeKeyword Keyword); | ||||||||
5385 | |||||||||
5386 | static bool KeywordIsTagTypeKind(ElaboratedTypeKeyword Keyword); | ||||||||
5387 | |||||||||
5388 | static StringRef getKeywordName(ElaboratedTypeKeyword Keyword); | ||||||||
5389 | |||||||||
5390 | static StringRef getTagTypeKindName(TagTypeKind Kind) { | ||||||||
5391 | return getKeywordName(getKeywordForTagTypeKind(Kind)); | ||||||||
5392 | } | ||||||||
5393 | |||||||||
5394 | class CannotCastToThisType {}; | ||||||||
5395 | static CannotCastToThisType classof(const Type *); | ||||||||
5396 | }; | ||||||||
5397 | |||||||||
5398 | /// Represents a type that was referred to using an elaborated type | ||||||||
5399 | /// keyword, e.g., struct S, or via a qualified name, e.g., N::M::type, | ||||||||
5400 | /// or both. | ||||||||
5401 | /// | ||||||||
5402 | /// This type is used to keep track of a type name as written in the | ||||||||
5403 | /// source code, including tag keywords and any nested-name-specifiers. | ||||||||
5404 | /// The type itself is always "sugar", used to express what was written | ||||||||
5405 | /// in the source code but containing no additional semantic information. | ||||||||
5406 | class ElaboratedType final | ||||||||
5407 | : public TypeWithKeyword, | ||||||||
5408 | public llvm::FoldingSetNode, | ||||||||
5409 | private llvm::TrailingObjects<ElaboratedType, TagDecl *> { | ||||||||
5410 | friend class ASTContext; // ASTContext creates these | ||||||||
5411 | friend TrailingObjects; | ||||||||
5412 | |||||||||
5413 | /// The nested name specifier containing the qualifier. | ||||||||
5414 | NestedNameSpecifier *NNS; | ||||||||
5415 | |||||||||
5416 | /// The type that this qualified name refers to. | ||||||||
5417 | QualType NamedType; | ||||||||
5418 | |||||||||
5419 | /// The (re)declaration of this tag type owned by this occurrence is stored | ||||||||
5420 | /// as a trailing object if there is one. Use getOwnedTagDecl to obtain | ||||||||
5421 | /// it, or obtain a null pointer if there is none. | ||||||||
5422 | |||||||||
5423 | ElaboratedType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, | ||||||||
5424 | QualType NamedType, QualType CanonType, TagDecl *OwnedTagDecl) | ||||||||
5425 | : TypeWithKeyword(Keyword, Elaborated, CanonType, | ||||||||
5426 | // Any semantic dependence on the qualifier will have | ||||||||
5427 | // been incorporated into NamedType. We still need to | ||||||||
5428 | // track syntactic (instantiation / error / pack) | ||||||||
5429 | // dependence on the qualifier. | ||||||||
5430 | NamedType->getDependence() | | ||||||||
5431 | (NNS ? toSyntacticDependence( | ||||||||
5432 | toTypeDependence(NNS->getDependence())) | ||||||||
5433 | : TypeDependence::None)), | ||||||||
5434 | NNS(NNS), NamedType(NamedType) { | ||||||||
5435 | ElaboratedTypeBits.HasOwnedTagDecl = false; | ||||||||
5436 | if (OwnedTagDecl) { | ||||||||
5437 | ElaboratedTypeBits.HasOwnedTagDecl = true; | ||||||||
5438 | *getTrailingObjects<TagDecl *>() = OwnedTagDecl; | ||||||||
5439 | } | ||||||||
5440 | assert(!(Keyword == ETK_None && NNS == nullptr) &&(static_cast <bool> (!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null.") ? void (0) : __assert_fail ( "!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5442, __extension__ __PRETTY_FUNCTION__)) | ||||||||
5441 | "ElaboratedType cannot have elaborated type keyword "(static_cast <bool> (!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null.") ? void (0) : __assert_fail ( "!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5442, __extension__ __PRETTY_FUNCTION__)) | ||||||||
5442 | "and name qualifier both null.")(static_cast <bool> (!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null.") ? void (0) : __assert_fail ( "!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5442, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5443 | } | ||||||||
5444 | |||||||||
5445 | public: | ||||||||
5446 | /// Retrieve the qualification on this type. | ||||||||
5447 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||
5448 | |||||||||
5449 | /// Retrieve the type named by the qualified-id. | ||||||||
5450 | QualType getNamedType() const { return NamedType; } | ||||||||
5451 | |||||||||
5452 | /// Remove a single level of sugar. | ||||||||
5453 | QualType desugar() const { return getNamedType(); } | ||||||||
5454 | |||||||||
5455 | /// Returns whether this type directly provides sugar. | ||||||||
5456 | bool isSugared() const { return true; } | ||||||||
5457 | |||||||||
5458 | /// Return the (re)declaration of this type owned by this occurrence of this | ||||||||
5459 | /// type, or nullptr if there is none. | ||||||||
5460 | TagDecl *getOwnedTagDecl() const { | ||||||||
5461 | return ElaboratedTypeBits.HasOwnedTagDecl ? *getTrailingObjects<TagDecl *>() | ||||||||
5462 | : nullptr; | ||||||||
5463 | } | ||||||||
5464 | |||||||||
5465 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
5466 | Profile(ID, getKeyword(), NNS, NamedType, getOwnedTagDecl()); | ||||||||
5467 | } | ||||||||
5468 | |||||||||
5469 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, | ||||||||
5470 | NestedNameSpecifier *NNS, QualType NamedType, | ||||||||
5471 | TagDecl *OwnedTagDecl) { | ||||||||
5472 | ID.AddInteger(Keyword); | ||||||||
5473 | ID.AddPointer(NNS); | ||||||||
5474 | NamedType.Profile(ID); | ||||||||
5475 | ID.AddPointer(OwnedTagDecl); | ||||||||
5476 | } | ||||||||
5477 | |||||||||
5478 | static bool classof(const Type *T) { return T->getTypeClass() == Elaborated; } | ||||||||
5479 | }; | ||||||||
5480 | |||||||||
5481 | /// Represents a qualified type name for which the type name is | ||||||||
5482 | /// dependent. | ||||||||
5483 | /// | ||||||||
5484 | /// DependentNameType represents a class of dependent types that involve a | ||||||||
5485 | /// possibly dependent nested-name-specifier (e.g., "T::") followed by a | ||||||||
5486 | /// name of a type. The DependentNameType may start with a "typename" (for a | ||||||||
5487 | /// typename-specifier), "class", "struct", "union", or "enum" (for a | ||||||||
5488 | /// dependent elaborated-type-specifier), or nothing (in contexts where we | ||||||||
5489 | /// know that we must be referring to a type, e.g., in a base class specifier). | ||||||||
5490 | /// Typically the nested-name-specifier is dependent, but in MSVC compatibility | ||||||||
5491 | /// mode, this type is used with non-dependent names to delay name lookup until | ||||||||
5492 | /// instantiation. | ||||||||
5493 | class DependentNameType : public TypeWithKeyword, public llvm::FoldingSetNode { | ||||||||
5494 | friend class ASTContext; // ASTContext creates these | ||||||||
5495 | |||||||||
5496 | /// The nested name specifier containing the qualifier. | ||||||||
5497 | NestedNameSpecifier *NNS; | ||||||||
5498 | |||||||||
5499 | /// The type that this typename specifier refers to. | ||||||||
5500 | const IdentifierInfo *Name; | ||||||||
5501 | |||||||||
5502 | DependentNameType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, | ||||||||
5503 | const IdentifierInfo *Name, QualType CanonType) | ||||||||
5504 | : TypeWithKeyword(Keyword, DependentName, CanonType, | ||||||||
5505 | TypeDependence::DependentInstantiation | | ||||||||
5506 | toTypeDependence(NNS->getDependence())), | ||||||||
5507 | NNS(NNS), Name(Name) {} | ||||||||
5508 | |||||||||
5509 | public: | ||||||||
5510 | /// Retrieve the qualification on this type. | ||||||||
5511 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||
5512 | |||||||||
5513 | /// Retrieve the type named by the typename specifier as an identifier. | ||||||||
5514 | /// | ||||||||
5515 | /// This routine will return a non-NULL identifier pointer when the | ||||||||
5516 | /// form of the original typename was terminated by an identifier, | ||||||||
5517 | /// e.g., "typename T::type". | ||||||||
5518 | const IdentifierInfo *getIdentifier() const { | ||||||||
5519 | return Name; | ||||||||
5520 | } | ||||||||
5521 | |||||||||
5522 | bool isSugared() const { return false; } | ||||||||
5523 | QualType desugar() const { return QualType(this, 0); } | ||||||||
5524 | |||||||||
5525 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
5526 | Profile(ID, getKeyword(), NNS, Name); | ||||||||
5527 | } | ||||||||
5528 | |||||||||
5529 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, | ||||||||
5530 | NestedNameSpecifier *NNS, const IdentifierInfo *Name) { | ||||||||
5531 | ID.AddInteger(Keyword); | ||||||||
5532 | ID.AddPointer(NNS); | ||||||||
5533 | ID.AddPointer(Name); | ||||||||
5534 | } | ||||||||
5535 | |||||||||
5536 | static bool classof(const Type *T) { | ||||||||
5537 | return T->getTypeClass() == DependentName; | ||||||||
5538 | } | ||||||||
5539 | }; | ||||||||
5540 | |||||||||
5541 | /// Represents a template specialization type whose template cannot be | ||||||||
5542 | /// resolved, e.g. | ||||||||
5543 | /// A<T>::template B<T> | ||||||||
5544 | class alignas(8) DependentTemplateSpecializationType | ||||||||
5545 | : public TypeWithKeyword, | ||||||||
5546 | public llvm::FoldingSetNode { | ||||||||
5547 | friend class ASTContext; // ASTContext creates these | ||||||||
5548 | |||||||||
5549 | /// The nested name specifier containing the qualifier. | ||||||||
5550 | NestedNameSpecifier *NNS; | ||||||||
5551 | |||||||||
5552 | /// The identifier of the template. | ||||||||
5553 | const IdentifierInfo *Name; | ||||||||
5554 | |||||||||
5555 | DependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, | ||||||||
5556 | NestedNameSpecifier *NNS, | ||||||||
5557 | const IdentifierInfo *Name, | ||||||||
5558 | ArrayRef<TemplateArgument> Args, | ||||||||
5559 | QualType Canon); | ||||||||
5560 | |||||||||
5561 | const TemplateArgument *getArgBuffer() const { | ||||||||
5562 | return reinterpret_cast<const TemplateArgument*>(this+1); | ||||||||
5563 | } | ||||||||
5564 | |||||||||
5565 | TemplateArgument *getArgBuffer() { | ||||||||
5566 | return reinterpret_cast<TemplateArgument*>(this+1); | ||||||||
5567 | } | ||||||||
5568 | |||||||||
5569 | public: | ||||||||
5570 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||
5571 | const IdentifierInfo *getIdentifier() const { return Name; } | ||||||||
5572 | |||||||||
5573 | /// Retrieve the template arguments. | ||||||||
5574 | const TemplateArgument *getArgs() const { | ||||||||
5575 | return getArgBuffer(); | ||||||||
5576 | } | ||||||||
5577 | |||||||||
5578 | /// Retrieve the number of template arguments. | ||||||||
5579 | unsigned getNumArgs() const { | ||||||||
5580 | return DependentTemplateSpecializationTypeBits.NumArgs; | ||||||||
5581 | } | ||||||||
5582 | |||||||||
5583 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||
5584 | |||||||||
5585 | ArrayRef<TemplateArgument> template_arguments() const { | ||||||||
5586 | return {getArgs(), getNumArgs()}; | ||||||||
5587 | } | ||||||||
5588 | |||||||||
5589 | using iterator = const TemplateArgument *; | ||||||||
5590 | |||||||||
5591 | iterator begin() const { return getArgs(); } | ||||||||
5592 | iterator end() const; // inline in TemplateBase.h | ||||||||
5593 | |||||||||
5594 | bool isSugared() const { return false; } | ||||||||
5595 | QualType desugar() const { return QualType(this, 0); } | ||||||||
5596 | |||||||||
5597 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { | ||||||||
5598 | Profile(ID, Context, getKeyword(), NNS, Name, {getArgs(), getNumArgs()}); | ||||||||
5599 | } | ||||||||
5600 | |||||||||
5601 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
5602 | const ASTContext &Context, | ||||||||
5603 | ElaboratedTypeKeyword Keyword, | ||||||||
5604 | NestedNameSpecifier *Qualifier, | ||||||||
5605 | const IdentifierInfo *Name, | ||||||||
5606 | ArrayRef<TemplateArgument> Args); | ||||||||
5607 | |||||||||
5608 | static bool classof(const Type *T) { | ||||||||
5609 | return T->getTypeClass() == DependentTemplateSpecialization; | ||||||||
5610 | } | ||||||||
5611 | }; | ||||||||
5612 | |||||||||
5613 | /// Represents a pack expansion of types. | ||||||||
5614 | /// | ||||||||
5615 | /// Pack expansions are part of C++11 variadic templates. A pack | ||||||||
5616 | /// expansion contains a pattern, which itself contains one or more | ||||||||
5617 | /// "unexpanded" parameter packs. When instantiated, a pack expansion | ||||||||
5618 | /// produces a series of types, each instantiated from the pattern of | ||||||||
5619 | /// the expansion, where the Ith instantiation of the pattern uses the | ||||||||
5620 | /// Ith arguments bound to each of the unexpanded parameter packs. The | ||||||||
5621 | /// pack expansion is considered to "expand" these unexpanded | ||||||||
5622 | /// parameter packs. | ||||||||
5623 | /// | ||||||||
5624 | /// \code | ||||||||
5625 | /// template<typename ...Types> struct tuple; | ||||||||
5626 | /// | ||||||||
5627 | /// template<typename ...Types> | ||||||||
5628 | /// struct tuple_of_references { | ||||||||
5629 | /// typedef tuple<Types&...> type; | ||||||||
5630 | /// }; | ||||||||
5631 | /// \endcode | ||||||||
5632 | /// | ||||||||
5633 | /// Here, the pack expansion \c Types&... is represented via a | ||||||||
5634 | /// PackExpansionType whose pattern is Types&. | ||||||||
5635 | class PackExpansionType : public Type, public llvm::FoldingSetNode { | ||||||||
5636 | friend class ASTContext; // ASTContext creates these | ||||||||
5637 | |||||||||
5638 | /// The pattern of the pack expansion. | ||||||||
5639 | QualType Pattern; | ||||||||
5640 | |||||||||
5641 | PackExpansionType(QualType Pattern, QualType Canon, | ||||||||
5642 | Optional<unsigned> NumExpansions) | ||||||||
5643 | : Type(PackExpansion, Canon, | ||||||||
5644 | (Pattern->getDependence() | TypeDependence::Dependent | | ||||||||
5645 | TypeDependence::Instantiation) & | ||||||||
5646 | ~TypeDependence::UnexpandedPack), | ||||||||
5647 | Pattern(Pattern) { | ||||||||
5648 | PackExpansionTypeBits.NumExpansions = | ||||||||
5649 | NumExpansions ? *NumExpansions + 1 : 0; | ||||||||
5650 | } | ||||||||
5651 | |||||||||
5652 | public: | ||||||||
5653 | /// Retrieve the pattern of this pack expansion, which is the | ||||||||
5654 | /// type that will be repeatedly instantiated when instantiating the | ||||||||
5655 | /// pack expansion itself. | ||||||||
5656 | QualType getPattern() const { return Pattern; } | ||||||||
5657 | |||||||||
5658 | /// Retrieve the number of expansions that this pack expansion will | ||||||||
5659 | /// generate, if known. | ||||||||
5660 | Optional<unsigned> getNumExpansions() const { | ||||||||
5661 | if (PackExpansionTypeBits.NumExpansions) | ||||||||
5662 | return PackExpansionTypeBits.NumExpansions - 1; | ||||||||
5663 | return None; | ||||||||
5664 | } | ||||||||
5665 | |||||||||
5666 | bool isSugared() const { return false; } | ||||||||
5667 | QualType desugar() const { return QualType(this, 0); } | ||||||||
5668 | |||||||||
5669 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
5670 | Profile(ID, getPattern(), getNumExpansions()); | ||||||||
5671 | } | ||||||||
5672 | |||||||||
5673 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pattern, | ||||||||
5674 | Optional<unsigned> NumExpansions) { | ||||||||
5675 | ID.AddPointer(Pattern.getAsOpaquePtr()); | ||||||||
5676 | ID.AddBoolean(NumExpansions.hasValue()); | ||||||||
5677 | if (NumExpansions) | ||||||||
5678 | ID.AddInteger(*NumExpansions); | ||||||||
5679 | } | ||||||||
5680 | |||||||||
5681 | static bool classof(const Type *T) { | ||||||||
5682 | return T->getTypeClass() == PackExpansion; | ||||||||
5683 | } | ||||||||
5684 | }; | ||||||||
5685 | |||||||||
5686 | /// This class wraps the list of protocol qualifiers. For types that can | ||||||||
5687 | /// take ObjC protocol qualifers, they can subclass this class. | ||||||||
5688 | template <class T> | ||||||||
5689 | class ObjCProtocolQualifiers { | ||||||||
5690 | protected: | ||||||||
5691 | ObjCProtocolQualifiers() = default; | ||||||||
5692 | |||||||||
5693 | ObjCProtocolDecl * const *getProtocolStorage() const { | ||||||||
5694 | return const_cast<ObjCProtocolQualifiers*>(this)->getProtocolStorage(); | ||||||||
5695 | } | ||||||||
5696 | |||||||||
5697 | ObjCProtocolDecl **getProtocolStorage() { | ||||||||
5698 | return static_cast<T*>(this)->getProtocolStorageImpl(); | ||||||||
5699 | } | ||||||||
5700 | |||||||||
5701 | void setNumProtocols(unsigned N) { | ||||||||
5702 | static_cast<T*>(this)->setNumProtocolsImpl(N); | ||||||||
5703 | } | ||||||||
5704 | |||||||||
5705 | void initialize(ArrayRef<ObjCProtocolDecl *> protocols) { | ||||||||
5706 | setNumProtocols(protocols.size()); | ||||||||
5707 | assert(getNumProtocols() == protocols.size() &&(static_cast <bool> (getNumProtocols() == protocols.size () && "bitfield overflow in protocol count") ? void ( 0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5708, __extension__ __PRETTY_FUNCTION__)) | ||||||||
5708 | "bitfield overflow in protocol count")(static_cast <bool> (getNumProtocols() == protocols.size () && "bitfield overflow in protocol count") ? void ( 0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5708, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5709 | if (!protocols.empty()) | ||||||||
5710 | memcpy(getProtocolStorage(), protocols.data(), | ||||||||
5711 | protocols.size() * sizeof(ObjCProtocolDecl*)); | ||||||||
5712 | } | ||||||||
5713 | |||||||||
5714 | public: | ||||||||
5715 | using qual_iterator = ObjCProtocolDecl * const *; | ||||||||
5716 | using qual_range = llvm::iterator_range<qual_iterator>; | ||||||||
5717 | |||||||||
5718 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } | ||||||||
5719 | qual_iterator qual_begin() const { return getProtocolStorage(); } | ||||||||
5720 | qual_iterator qual_end() const { return qual_begin() + getNumProtocols(); } | ||||||||
5721 | |||||||||
5722 | bool qual_empty() const { return getNumProtocols() == 0; } | ||||||||
5723 | |||||||||
5724 | /// Return the number of qualifying protocols in this type, or 0 if | ||||||||
5725 | /// there are none. | ||||||||
5726 | unsigned getNumProtocols() const { | ||||||||
5727 | return static_cast<const T*>(this)->getNumProtocolsImpl(); | ||||||||
5728 | } | ||||||||
5729 | |||||||||
5730 | /// Fetch a protocol by index. | ||||||||
5731 | ObjCProtocolDecl *getProtocol(unsigned I) const { | ||||||||
5732 | assert(I < getNumProtocols() && "Out-of-range protocol access")(static_cast <bool> (I < getNumProtocols() && "Out-of-range protocol access") ? void (0) : __assert_fail ( "I < getNumProtocols() && \"Out-of-range protocol access\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5732, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5733 | return qual_begin()[I]; | ||||||||
5734 | } | ||||||||
5735 | |||||||||
5736 | /// Retrieve all of the protocol qualifiers. | ||||||||
5737 | ArrayRef<ObjCProtocolDecl *> getProtocols() const { | ||||||||
5738 | return ArrayRef<ObjCProtocolDecl *>(qual_begin(), getNumProtocols()); | ||||||||
5739 | } | ||||||||
5740 | }; | ||||||||
5741 | |||||||||
5742 | /// Represents a type parameter type in Objective C. It can take | ||||||||
5743 | /// a list of protocols. | ||||||||
5744 | class ObjCTypeParamType : public Type, | ||||||||
5745 | public ObjCProtocolQualifiers<ObjCTypeParamType>, | ||||||||
5746 | public llvm::FoldingSetNode { | ||||||||
5747 | friend class ASTContext; | ||||||||
5748 | friend class ObjCProtocolQualifiers<ObjCTypeParamType>; | ||||||||
5749 | |||||||||
5750 | /// The number of protocols stored on this type. | ||||||||
5751 | unsigned NumProtocols : 6; | ||||||||
5752 | |||||||||
5753 | ObjCTypeParamDecl *OTPDecl; | ||||||||
5754 | |||||||||
5755 | /// The protocols are stored after the ObjCTypeParamType node. In the | ||||||||
5756 | /// canonical type, the list of protocols are sorted alphabetically | ||||||||
5757 | /// and uniqued. | ||||||||
5758 | ObjCProtocolDecl **getProtocolStorageImpl(); | ||||||||
5759 | |||||||||
5760 | /// Return the number of qualifying protocols in this interface type, | ||||||||
5761 | /// or 0 if there are none. | ||||||||
5762 | unsigned getNumProtocolsImpl() const { | ||||||||
5763 | return NumProtocols; | ||||||||
5764 | } | ||||||||
5765 | |||||||||
5766 | void setNumProtocolsImpl(unsigned N) { | ||||||||
5767 | NumProtocols = N; | ||||||||
5768 | } | ||||||||
5769 | |||||||||
5770 | ObjCTypeParamType(const ObjCTypeParamDecl *D, | ||||||||
5771 | QualType can, | ||||||||
5772 | ArrayRef<ObjCProtocolDecl *> protocols); | ||||||||
5773 | |||||||||
5774 | public: | ||||||||
5775 | bool isSugared() const { return true; } | ||||||||
5776 | QualType desugar() const { return getCanonicalTypeInternal(); } | ||||||||
5777 | |||||||||
5778 | static bool classof(const Type *T) { | ||||||||
5779 | return T->getTypeClass() == ObjCTypeParam; | ||||||||
5780 | } | ||||||||
5781 | |||||||||
5782 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||
5783 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
5784 | const ObjCTypeParamDecl *OTPDecl, | ||||||||
5785 | QualType CanonicalType, | ||||||||
5786 | ArrayRef<ObjCProtocolDecl *> protocols); | ||||||||
5787 | |||||||||
5788 | ObjCTypeParamDecl *getDecl() const { return OTPDecl; } | ||||||||
5789 | }; | ||||||||
5790 | |||||||||
5791 | /// Represents a class type in Objective C. | ||||||||
5792 | /// | ||||||||
5793 | /// Every Objective C type is a combination of a base type, a set of | ||||||||
5794 | /// type arguments (optional, for parameterized classes) and a list of | ||||||||
5795 | /// protocols. | ||||||||
5796 | /// | ||||||||
5797 | /// Given the following declarations: | ||||||||
5798 | /// \code | ||||||||
5799 | /// \@class C<T>; | ||||||||
5800 | /// \@protocol P; | ||||||||
5801 | /// \endcode | ||||||||
5802 | /// | ||||||||
5803 | /// 'C' is an ObjCInterfaceType C. It is sugar for an ObjCObjectType | ||||||||
5804 | /// with base C and no protocols. | ||||||||
5805 | /// | ||||||||
5806 | /// 'C<P>' is an unspecialized ObjCObjectType with base C and protocol list [P]. | ||||||||
5807 | /// 'C<C*>' is a specialized ObjCObjectType with type arguments 'C*' and no | ||||||||
5808 | /// protocol list. | ||||||||
5809 | /// 'C<C*><P>' is a specialized ObjCObjectType with base C, type arguments 'C*', | ||||||||
5810 | /// and protocol list [P]. | ||||||||
5811 | /// | ||||||||
5812 | /// 'id' is a TypedefType which is sugar for an ObjCObjectPointerType whose | ||||||||
5813 | /// pointee is an ObjCObjectType with base BuiltinType::ObjCIdType | ||||||||
5814 | /// and no protocols. | ||||||||
5815 | /// | ||||||||
5816 | /// 'id<P>' is an ObjCObjectPointerType whose pointee is an ObjCObjectType | ||||||||
5817 | /// with base BuiltinType::ObjCIdType and protocol list [P]. Eventually | ||||||||
5818 | /// this should get its own sugar class to better represent the source. | ||||||||
5819 | class ObjCObjectType : public Type, | ||||||||
5820 | public ObjCProtocolQualifiers<ObjCObjectType> { | ||||||||
5821 | friend class ObjCProtocolQualifiers<ObjCObjectType>; | ||||||||
5822 | |||||||||
5823 | // ObjCObjectType.NumTypeArgs - the number of type arguments stored | ||||||||
5824 | // after the ObjCObjectPointerType node. | ||||||||
5825 | // ObjCObjectType.NumProtocols - the number of protocols stored | ||||||||
5826 | // after the type arguments of ObjCObjectPointerType node. | ||||||||
5827 | // | ||||||||
5828 | // These protocols are those written directly on the type. If | ||||||||
5829 | // protocol qualifiers ever become additive, the iterators will need | ||||||||
5830 | // to get kindof complicated. | ||||||||
5831 | // | ||||||||
5832 | // In the canonical object type, these are sorted alphabetically | ||||||||
5833 | // and uniqued. | ||||||||
5834 | |||||||||
5835 | /// Either a BuiltinType or an InterfaceType or sugar for either. | ||||||||
5836 | QualType BaseType; | ||||||||
5837 | |||||||||
5838 | /// Cached superclass type. | ||||||||
5839 | mutable llvm::PointerIntPair<const ObjCObjectType *, 1, bool> | ||||||||
5840 | CachedSuperClassType; | ||||||||
5841 | |||||||||
5842 | QualType *getTypeArgStorage(); | ||||||||
5843 | const QualType *getTypeArgStorage() const { | ||||||||
5844 | return const_cast<ObjCObjectType *>(this)->getTypeArgStorage(); | ||||||||
5845 | } | ||||||||
5846 | |||||||||
5847 | ObjCProtocolDecl **getProtocolStorageImpl(); | ||||||||
5848 | /// Return the number of qualifying protocols in this interface type, | ||||||||
5849 | /// or 0 if there are none. | ||||||||
5850 | unsigned getNumProtocolsImpl() const { | ||||||||
5851 | return ObjCObjectTypeBits.NumProtocols; | ||||||||
5852 | } | ||||||||
5853 | void setNumProtocolsImpl(unsigned N) { | ||||||||
5854 | ObjCObjectTypeBits.NumProtocols = N; | ||||||||
5855 | } | ||||||||
5856 | |||||||||
5857 | protected: | ||||||||
5858 | enum Nonce_ObjCInterface { Nonce_ObjCInterface }; | ||||||||
5859 | |||||||||
5860 | ObjCObjectType(QualType Canonical, QualType Base, | ||||||||
5861 | ArrayRef<QualType> typeArgs, | ||||||||
5862 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||
5863 | bool isKindOf); | ||||||||
5864 | |||||||||
5865 | ObjCObjectType(enum Nonce_ObjCInterface) | ||||||||
5866 | : Type(ObjCInterface, QualType(), TypeDependence::None), | ||||||||
5867 | BaseType(QualType(this_(), 0)) { | ||||||||
5868 | ObjCObjectTypeBits.NumProtocols = 0; | ||||||||
5869 | ObjCObjectTypeBits.NumTypeArgs = 0; | ||||||||
5870 | ObjCObjectTypeBits.IsKindOf = 0; | ||||||||
5871 | } | ||||||||
5872 | |||||||||
5873 | void computeSuperClassTypeSlow() const; | ||||||||
5874 | |||||||||
5875 | public: | ||||||||
5876 | /// Gets the base type of this object type. This is always (possibly | ||||||||
5877 | /// sugar for) one of: | ||||||||
5878 | /// - the 'id' builtin type (as opposed to the 'id' type visible to the | ||||||||
5879 | /// user, which is a typedef for an ObjCObjectPointerType) | ||||||||
5880 | /// - the 'Class' builtin type (same caveat) | ||||||||
5881 | /// - an ObjCObjectType (currently always an ObjCInterfaceType) | ||||||||
5882 | QualType getBaseType() const { return BaseType; } | ||||||||
5883 | |||||||||
5884 | bool isObjCId() const { | ||||||||
5885 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCId); | ||||||||
5886 | } | ||||||||
5887 | |||||||||
5888 | bool isObjCClass() const { | ||||||||
5889 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCClass); | ||||||||
5890 | } | ||||||||
5891 | |||||||||
5892 | bool isObjCUnqualifiedId() const { return qual_empty() && isObjCId(); } | ||||||||
5893 | bool isObjCUnqualifiedClass() const { return qual_empty() && isObjCClass(); } | ||||||||
5894 | bool isObjCUnqualifiedIdOrClass() const { | ||||||||
5895 | if (!qual_empty()) return false; | ||||||||
5896 | if (const BuiltinType *T = getBaseType()->getAs<BuiltinType>()) | ||||||||
5897 | return T->getKind() == BuiltinType::ObjCId || | ||||||||
5898 | T->getKind() == BuiltinType::ObjCClass; | ||||||||
5899 | return false; | ||||||||
5900 | } | ||||||||
5901 | bool isObjCQualifiedId() const { return !qual_empty() && isObjCId(); } | ||||||||
5902 | bool isObjCQualifiedClass() const { return !qual_empty() && isObjCClass(); } | ||||||||
5903 | |||||||||
5904 | /// Gets the interface declaration for this object type, if the base type | ||||||||
5905 | /// really is an interface. | ||||||||
5906 | ObjCInterfaceDecl *getInterface() const; | ||||||||
5907 | |||||||||
5908 | /// Determine whether this object type is "specialized", meaning | ||||||||
5909 | /// that it has type arguments. | ||||||||
5910 | bool isSpecialized() const; | ||||||||
5911 | |||||||||
5912 | /// Determine whether this object type was written with type arguments. | ||||||||
5913 | bool isSpecializedAsWritten() const { | ||||||||
5914 | return ObjCObjectTypeBits.NumTypeArgs > 0; | ||||||||
5915 | } | ||||||||
5916 | |||||||||
5917 | /// Determine whether this object type is "unspecialized", meaning | ||||||||
5918 | /// that it has no type arguments. | ||||||||
5919 | bool isUnspecialized() const { return !isSpecialized(); } | ||||||||
5920 | |||||||||
5921 | /// Determine whether this object type is "unspecialized" as | ||||||||
5922 | /// written, meaning that it has no type arguments. | ||||||||
5923 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } | ||||||||
5924 | |||||||||
5925 | /// Retrieve the type arguments of this object type (semantically). | ||||||||
5926 | ArrayRef<QualType> getTypeArgs() const; | ||||||||
5927 | |||||||||
5928 | /// Retrieve the type arguments of this object type as they were | ||||||||
5929 | /// written. | ||||||||
5930 | ArrayRef<QualType> getTypeArgsAsWritten() const { | ||||||||
5931 | return llvm::makeArrayRef(getTypeArgStorage(), | ||||||||
5932 | ObjCObjectTypeBits.NumTypeArgs); | ||||||||
5933 | } | ||||||||
5934 | |||||||||
5935 | /// Whether this is a "__kindof" type as written. | ||||||||
5936 | bool isKindOfTypeAsWritten() const { return ObjCObjectTypeBits.IsKindOf; } | ||||||||
5937 | |||||||||
5938 | /// Whether this ia a "__kindof" type (semantically). | ||||||||
5939 | bool isKindOfType() const; | ||||||||
5940 | |||||||||
5941 | /// Retrieve the type of the superclass of this object type. | ||||||||
5942 | /// | ||||||||
5943 | /// This operation substitutes any type arguments into the | ||||||||
5944 | /// superclass of the current class type, potentially producing a | ||||||||
5945 | /// specialization of the superclass type. Produces a null type if | ||||||||
5946 | /// there is no superclass. | ||||||||
5947 | QualType getSuperClassType() const { | ||||||||
5948 | if (!CachedSuperClassType.getInt()) | ||||||||
5949 | computeSuperClassTypeSlow(); | ||||||||
5950 | |||||||||
5951 | assert(CachedSuperClassType.getInt() && "Superclass not set?")(static_cast <bool> (CachedSuperClassType.getInt() && "Superclass not set?") ? void (0) : __assert_fail ("CachedSuperClassType.getInt() && \"Superclass not set?\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 5951, __extension__ __PRETTY_FUNCTION__)); | ||||||||
5952 | return QualType(CachedSuperClassType.getPointer(), 0); | ||||||||
5953 | } | ||||||||
5954 | |||||||||
5955 | /// Strip off the Objective-C "kindof" type and (with it) any | ||||||||
5956 | /// protocol qualifiers. | ||||||||
5957 | QualType stripObjCKindOfTypeAndQuals(const ASTContext &ctx) const; | ||||||||
5958 | |||||||||
5959 | bool isSugared() const { return false; } | ||||||||
5960 | QualType desugar() const { return QualType(this, 0); } | ||||||||
5961 | |||||||||
5962 | static bool classof(const Type *T) { | ||||||||
5963 | return T->getTypeClass() == ObjCObject || | ||||||||
5964 | T->getTypeClass() == ObjCInterface; | ||||||||
5965 | } | ||||||||
5966 | }; | ||||||||
5967 | |||||||||
5968 | /// A class providing a concrete implementation | ||||||||
5969 | /// of ObjCObjectType, so as to not increase the footprint of | ||||||||
5970 | /// ObjCInterfaceType. Code outside of ASTContext and the core type | ||||||||
5971 | /// system should not reference this type. | ||||||||
5972 | class ObjCObjectTypeImpl : public ObjCObjectType, public llvm::FoldingSetNode { | ||||||||
5973 | friend class ASTContext; | ||||||||
5974 | |||||||||
5975 | // If anyone adds fields here, ObjCObjectType::getProtocolStorage() | ||||||||
5976 | // will need to be modified. | ||||||||
5977 | |||||||||
5978 | ObjCObjectTypeImpl(QualType Canonical, QualType Base, | ||||||||
5979 | ArrayRef<QualType> typeArgs, | ||||||||
5980 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||
5981 | bool isKindOf) | ||||||||
5982 | : ObjCObjectType(Canonical, Base, typeArgs, protocols, isKindOf) {} | ||||||||
5983 | |||||||||
5984 | public: | ||||||||
5985 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||
5986 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
5987 | QualType Base, | ||||||||
5988 | ArrayRef<QualType> typeArgs, | ||||||||
5989 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||
5990 | bool isKindOf); | ||||||||
5991 | }; | ||||||||
5992 | |||||||||
5993 | inline QualType *ObjCObjectType::getTypeArgStorage() { | ||||||||
5994 | return reinterpret_cast<QualType *>(static_cast<ObjCObjectTypeImpl*>(this)+1); | ||||||||
5995 | } | ||||||||
5996 | |||||||||
5997 | inline ObjCProtocolDecl **ObjCObjectType::getProtocolStorageImpl() { | ||||||||
5998 | return reinterpret_cast<ObjCProtocolDecl**>( | ||||||||
5999 | getTypeArgStorage() + ObjCObjectTypeBits.NumTypeArgs); | ||||||||
6000 | } | ||||||||
6001 | |||||||||
6002 | inline ObjCProtocolDecl **ObjCTypeParamType::getProtocolStorageImpl() { | ||||||||
6003 | return reinterpret_cast<ObjCProtocolDecl**>( | ||||||||
6004 | static_cast<ObjCTypeParamType*>(this)+1); | ||||||||
6005 | } | ||||||||
6006 | |||||||||
6007 | /// Interfaces are the core concept in Objective-C for object oriented design. | ||||||||
6008 | /// They basically correspond to C++ classes. There are two kinds of interface | ||||||||
6009 | /// types: normal interfaces like `NSString`, and qualified interfaces, which | ||||||||
6010 | /// are qualified with a protocol list like `NSString<NSCopyable, NSAmazing>`. | ||||||||
6011 | /// | ||||||||
6012 | /// ObjCInterfaceType guarantees the following properties when considered | ||||||||
6013 | /// as a subtype of its superclass, ObjCObjectType: | ||||||||
6014 | /// - There are no protocol qualifiers. To reinforce this, code which | ||||||||
6015 | /// tries to invoke the protocol methods via an ObjCInterfaceType will | ||||||||
6016 | /// fail to compile. | ||||||||
6017 | /// - It is its own base type. That is, if T is an ObjCInterfaceType*, | ||||||||
6018 | /// T->getBaseType() == QualType(T, 0). | ||||||||
6019 | class ObjCInterfaceType : public ObjCObjectType { | ||||||||
6020 | friend class ASTContext; // ASTContext creates these. | ||||||||
6021 | friend class ASTReader; | ||||||||
6022 | friend class ObjCInterfaceDecl; | ||||||||
6023 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
6024 | |||||||||
6025 | mutable ObjCInterfaceDecl *Decl; | ||||||||
6026 | |||||||||
6027 | ObjCInterfaceType(const ObjCInterfaceDecl *D) | ||||||||
6028 | : ObjCObjectType(Nonce_ObjCInterface), | ||||||||
6029 | Decl(const_cast<ObjCInterfaceDecl*>(D)) {} | ||||||||
6030 | |||||||||
6031 | public: | ||||||||
6032 | /// Get the declaration of this interface. | ||||||||
6033 | ObjCInterfaceDecl *getDecl() const { return Decl; } | ||||||||
6034 | |||||||||
6035 | bool isSugared() const { return false; } | ||||||||
6036 | QualType desugar() const { return QualType(this, 0); } | ||||||||
6037 | |||||||||
6038 | static bool classof(const Type *T) { | ||||||||
6039 | return T->getTypeClass() == ObjCInterface; | ||||||||
6040 | } | ||||||||
6041 | |||||||||
6042 | // Nonsense to "hide" certain members of ObjCObjectType within this | ||||||||
6043 | // class. People asking for protocols on an ObjCInterfaceType are | ||||||||
6044 | // not going to get what they want: ObjCInterfaceTypes are | ||||||||
6045 | // guaranteed to have no protocols. | ||||||||
6046 | enum { | ||||||||
6047 | qual_iterator, | ||||||||
6048 | qual_begin, | ||||||||
6049 | qual_end, | ||||||||
6050 | getNumProtocols, | ||||||||
6051 | getProtocol | ||||||||
6052 | }; | ||||||||
6053 | }; | ||||||||
6054 | |||||||||
6055 | inline ObjCInterfaceDecl *ObjCObjectType::getInterface() const { | ||||||||
6056 | QualType baseType = getBaseType(); | ||||||||
6057 | while (const auto *ObjT = baseType->getAs<ObjCObjectType>()) { | ||||||||
6058 | if (const auto *T = dyn_cast<ObjCInterfaceType>(ObjT)) | ||||||||
6059 | return T->getDecl(); | ||||||||
6060 | |||||||||
6061 | baseType = ObjT->getBaseType(); | ||||||||
6062 | } | ||||||||
6063 | |||||||||
6064 | return nullptr; | ||||||||
6065 | } | ||||||||
6066 | |||||||||
6067 | /// Represents a pointer to an Objective C object. | ||||||||
6068 | /// | ||||||||
6069 | /// These are constructed from pointer declarators when the pointee type is | ||||||||
6070 | /// an ObjCObjectType (or sugar for one). In addition, the 'id' and 'Class' | ||||||||
6071 | /// types are typedefs for these, and the protocol-qualified types 'id<P>' | ||||||||
6072 | /// and 'Class<P>' are translated into these. | ||||||||
6073 | /// | ||||||||
6074 | /// Pointers to pointers to Objective C objects are still PointerTypes; | ||||||||
6075 | /// only the first level of pointer gets it own type implementation. | ||||||||
6076 | class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode { | ||||||||
6077 | friend class ASTContext; // ASTContext creates these. | ||||||||
6078 | |||||||||
6079 | QualType PointeeType; | ||||||||
6080 | |||||||||
6081 | ObjCObjectPointerType(QualType Canonical, QualType Pointee) | ||||||||
6082 | : Type(ObjCObjectPointer, Canonical, Pointee->getDependence()), | ||||||||
6083 | PointeeType(Pointee) {} | ||||||||
6084 | |||||||||
6085 | public: | ||||||||
6086 | /// Gets the type pointed to by this ObjC pointer. | ||||||||
6087 | /// The result will always be an ObjCObjectType or sugar thereof. | ||||||||
6088 | QualType getPointeeType() const { return PointeeType; } | ||||||||
6089 | |||||||||
6090 | /// Gets the type pointed to by this ObjC pointer. Always returns non-null. | ||||||||
6091 | /// | ||||||||
6092 | /// This method is equivalent to getPointeeType() except that | ||||||||
6093 | /// it discards any typedefs (or other sugar) between this | ||||||||
6094 | /// type and the "outermost" object type. So for: | ||||||||
6095 | /// \code | ||||||||
6096 | /// \@class A; \@protocol P; \@protocol Q; | ||||||||
6097 | /// typedef A<P> AP; | ||||||||
6098 | /// typedef A A1; | ||||||||
6099 | /// typedef A1<P> A1P; | ||||||||
6100 | /// typedef A1P<Q> A1PQ; | ||||||||
6101 | /// \endcode | ||||||||
6102 | /// For 'A*', getObjectType() will return 'A'. | ||||||||
6103 | /// For 'A<P>*', getObjectType() will return 'A<P>'. | ||||||||
6104 | /// For 'AP*', getObjectType() will return 'A<P>'. | ||||||||
6105 | /// For 'A1*', getObjectType() will return 'A'. | ||||||||
6106 | /// For 'A1<P>*', getObjectType() will return 'A1<P>'. | ||||||||
6107 | /// For 'A1P*', getObjectType() will return 'A1<P>'. | ||||||||
6108 | /// For 'A1PQ*', getObjectType() will return 'A1<Q>', because | ||||||||
6109 | /// adding protocols to a protocol-qualified base discards the | ||||||||
6110 | /// old qualifiers (for now). But if it didn't, getObjectType() | ||||||||
6111 | /// would return 'A1P<Q>' (and we'd have to make iterating over | ||||||||
6112 | /// qualifiers more complicated). | ||||||||
6113 | const ObjCObjectType *getObjectType() const { | ||||||||
6114 | return PointeeType->castAs<ObjCObjectType>(); | ||||||||
6115 | } | ||||||||
6116 | |||||||||
6117 | /// If this pointer points to an Objective C | ||||||||
6118 | /// \@interface type, gets the type for that interface. Any protocol | ||||||||
6119 | /// qualifiers on the interface are ignored. | ||||||||
6120 | /// | ||||||||
6121 | /// \return null if the base type for this pointer is 'id' or 'Class' | ||||||||
6122 | const ObjCInterfaceType *getInterfaceType() const; | ||||||||
6123 | |||||||||
6124 | /// If this pointer points to an Objective \@interface | ||||||||
6125 | /// type, gets the declaration for that interface. | ||||||||
6126 | /// | ||||||||
6127 | /// \return null if the base type for this pointer is 'id' or 'Class' | ||||||||
6128 | ObjCInterfaceDecl *getInterfaceDecl() const { | ||||||||
6129 | return getObjectType()->getInterface(); | ||||||||
6130 | } | ||||||||
6131 | |||||||||
6132 | /// True if this is equivalent to the 'id' type, i.e. if | ||||||||
6133 | /// its object type is the primitive 'id' type with no protocols. | ||||||||
6134 | bool isObjCIdType() const { | ||||||||
6135 | return getObjectType()->isObjCUnqualifiedId(); | ||||||||
6136 | } | ||||||||
6137 | |||||||||
6138 | /// True if this is equivalent to the 'Class' type, | ||||||||
6139 | /// i.e. if its object tive is the primitive 'Class' type with no protocols. | ||||||||
6140 | bool isObjCClassType() const { | ||||||||
6141 | return getObjectType()->isObjCUnqualifiedClass(); | ||||||||
6142 | } | ||||||||
6143 | |||||||||
6144 | /// True if this is equivalent to the 'id' or 'Class' type, | ||||||||
6145 | bool isObjCIdOrClassType() const { | ||||||||
6146 | return getObjectType()->isObjCUnqualifiedIdOrClass(); | ||||||||
6147 | } | ||||||||
6148 | |||||||||
6149 | /// True if this is equivalent to 'id<P>' for some non-empty set of | ||||||||
6150 | /// protocols. | ||||||||
6151 | bool isObjCQualifiedIdType() const { | ||||||||
6152 | return getObjectType()->isObjCQualifiedId(); | ||||||||
6153 | } | ||||||||
6154 | |||||||||
6155 | /// True if this is equivalent to 'Class<P>' for some non-empty set of | ||||||||
6156 | /// protocols. | ||||||||
6157 | bool isObjCQualifiedClassType() const { | ||||||||
6158 | return getObjectType()->isObjCQualifiedClass(); | ||||||||
6159 | } | ||||||||
6160 | |||||||||
6161 | /// Whether this is a "__kindof" type. | ||||||||
6162 | bool isKindOfType() const { return getObjectType()->isKindOfType(); } | ||||||||
6163 | |||||||||
6164 | /// Whether this type is specialized, meaning that it has type arguments. | ||||||||
6165 | bool isSpecialized() const { return getObjectType()->isSpecialized(); } | ||||||||
6166 | |||||||||
6167 | /// Whether this type is specialized, meaning that it has type arguments. | ||||||||
6168 | bool isSpecializedAsWritten() const { | ||||||||
6169 | return getObjectType()->isSpecializedAsWritten(); | ||||||||
6170 | } | ||||||||
6171 | |||||||||
6172 | /// Whether this type is unspecialized, meaning that is has no type arguments. | ||||||||
6173 | bool isUnspecialized() const { return getObjectType()->isUnspecialized(); } | ||||||||
6174 | |||||||||
6175 | /// Determine whether this object type is "unspecialized" as | ||||||||
6176 | /// written, meaning that it has no type arguments. | ||||||||
6177 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } | ||||||||
6178 | |||||||||
6179 | /// Retrieve the type arguments for this type. | ||||||||
6180 | ArrayRef<QualType> getTypeArgs() const { | ||||||||
6181 | return getObjectType()->getTypeArgs(); | ||||||||
6182 | } | ||||||||
6183 | |||||||||
6184 | /// Retrieve the type arguments for this type. | ||||||||
6185 | ArrayRef<QualType> getTypeArgsAsWritten() const { | ||||||||
6186 | return getObjectType()->getTypeArgsAsWritten(); | ||||||||
6187 | } | ||||||||
6188 | |||||||||
6189 | /// An iterator over the qualifiers on the object type. Provided | ||||||||
6190 | /// for convenience. This will always iterate over the full set of | ||||||||
6191 | /// protocols on a type, not just those provided directly. | ||||||||
6192 | using qual_iterator = ObjCObjectType::qual_iterator; | ||||||||
6193 | using qual_range = llvm::iterator_range<qual_iterator>; | ||||||||
6194 | |||||||||
6195 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } | ||||||||
6196 | |||||||||
6197 | qual_iterator qual_begin() const { | ||||||||
6198 | return getObjectType()->qual_begin(); | ||||||||
6199 | } | ||||||||
6200 | |||||||||
6201 | qual_iterator qual_end() const { | ||||||||
6202 | return getObjectType()->qual_end(); | ||||||||
6203 | } | ||||||||
6204 | |||||||||
6205 | bool qual_empty() const { return getObjectType()->qual_empty(); } | ||||||||
6206 | |||||||||
6207 | /// Return the number of qualifying protocols on the object type. | ||||||||
6208 | unsigned getNumProtocols() const { | ||||||||
6209 | return getObjectType()->getNumProtocols(); | ||||||||
6210 | } | ||||||||
6211 | |||||||||
6212 | /// Retrieve a qualifying protocol by index on the object type. | ||||||||
6213 | ObjCProtocolDecl *getProtocol(unsigned I) const { | ||||||||
6214 | return getObjectType()->getProtocol(I); | ||||||||
6215 | } | ||||||||
6216 | |||||||||
6217 | bool isSugared() const { return false; } | ||||||||
6218 | QualType desugar() const { return QualType(this, 0); } | ||||||||
6219 | |||||||||
6220 | /// Retrieve the type of the superclass of this object pointer type. | ||||||||
6221 | /// | ||||||||
6222 | /// This operation substitutes any type arguments into the | ||||||||
6223 | /// superclass of the current class type, potentially producing a | ||||||||
6224 | /// pointer to a specialization of the superclass type. Produces a | ||||||||
6225 | /// null type if there is no superclass. | ||||||||
6226 | QualType getSuperClassType() const; | ||||||||
6227 | |||||||||
6228 | /// Strip off the Objective-C "kindof" type and (with it) any | ||||||||
6229 | /// protocol qualifiers. | ||||||||
6230 | const ObjCObjectPointerType *stripObjCKindOfTypeAndQuals( | ||||||||
6231 | const ASTContext &ctx) const; | ||||||||
6232 | |||||||||
6233 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
6234 | Profile(ID, getPointeeType()); | ||||||||
6235 | } | ||||||||
6236 | |||||||||
6237 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { | ||||||||
6238 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||
6239 | } | ||||||||
6240 | |||||||||
6241 | static bool classof(const Type *T) { | ||||||||
6242 | return T->getTypeClass() == ObjCObjectPointer; | ||||||||
6243 | } | ||||||||
6244 | }; | ||||||||
6245 | |||||||||
6246 | class AtomicType : public Type, public llvm::FoldingSetNode { | ||||||||
6247 | friend class ASTContext; // ASTContext creates these. | ||||||||
6248 | |||||||||
6249 | QualType ValueType; | ||||||||
6250 | |||||||||
6251 | AtomicType(QualType ValTy, QualType Canonical) | ||||||||
6252 | : Type(Atomic, Canonical, ValTy->getDependence()), ValueType(ValTy) {} | ||||||||
6253 | |||||||||
6254 | public: | ||||||||
6255 | /// Gets the type contained by this atomic type, i.e. | ||||||||
6256 | /// the type returned by performing an atomic load of this atomic type. | ||||||||
6257 | QualType getValueType() const { return ValueType; } | ||||||||
6258 | |||||||||
6259 | bool isSugared() const { return false; } | ||||||||
6260 | QualType desugar() const { return QualType(this, 0); } | ||||||||
6261 | |||||||||
6262 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
6263 | Profile(ID, getValueType()); | ||||||||
6264 | } | ||||||||
6265 | |||||||||
6266 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { | ||||||||
6267 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||
6268 | } | ||||||||
6269 | |||||||||
6270 | static bool classof(const Type *T) { | ||||||||
6271 | return T->getTypeClass() == Atomic; | ||||||||
6272 | } | ||||||||
6273 | }; | ||||||||
6274 | |||||||||
6275 | /// PipeType - OpenCL20. | ||||||||
6276 | class PipeType : public Type, public llvm::FoldingSetNode { | ||||||||
6277 | friend class ASTContext; // ASTContext creates these. | ||||||||
6278 | |||||||||
6279 | QualType ElementType; | ||||||||
6280 | bool isRead; | ||||||||
6281 | |||||||||
6282 | PipeType(QualType elemType, QualType CanonicalPtr, bool isRead) | ||||||||
6283 | : Type(Pipe, CanonicalPtr, elemType->getDependence()), | ||||||||
6284 | ElementType(elemType), isRead(isRead) {} | ||||||||
6285 | |||||||||
6286 | public: | ||||||||
6287 | QualType getElementType() const { return ElementType; } | ||||||||
6288 | |||||||||
6289 | bool isSugared() const { return false; } | ||||||||
6290 | |||||||||
6291 | QualType desugar() const { return QualType(this, 0); } | ||||||||
6292 | |||||||||
6293 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
6294 | Profile(ID, getElementType(), isReadOnly()); | ||||||||
6295 | } | ||||||||
6296 | |||||||||
6297 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T, bool isRead) { | ||||||||
6298 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||
6299 | ID.AddBoolean(isRead); | ||||||||
6300 | } | ||||||||
6301 | |||||||||
6302 | static bool classof(const Type *T) { | ||||||||
6303 | return T->getTypeClass() == Pipe; | ||||||||
6304 | } | ||||||||
6305 | |||||||||
6306 | bool isReadOnly() const { return isRead; } | ||||||||
6307 | }; | ||||||||
6308 | |||||||||
6309 | /// A fixed int type of a specified bitwidth. | ||||||||
6310 | class ExtIntType final : public Type, public llvm::FoldingSetNode { | ||||||||
6311 | friend class ASTContext; | ||||||||
6312 | unsigned IsUnsigned : 1; | ||||||||
6313 | unsigned NumBits : 24; | ||||||||
6314 | |||||||||
6315 | protected: | ||||||||
6316 | ExtIntType(bool isUnsigned, unsigned NumBits); | ||||||||
6317 | |||||||||
6318 | public: | ||||||||
6319 | bool isUnsigned() const { return IsUnsigned; } | ||||||||
6320 | bool isSigned() const { return !IsUnsigned; } | ||||||||
6321 | unsigned getNumBits() const { return NumBits; } | ||||||||
6322 | |||||||||
6323 | bool isSugared() const { return false; } | ||||||||
6324 | QualType desugar() const { return QualType(this, 0); } | ||||||||
6325 | |||||||||
6326 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
6327 | Profile(ID, isUnsigned(), getNumBits()); | ||||||||
6328 | } | ||||||||
6329 | |||||||||
6330 | static void Profile(llvm::FoldingSetNodeID &ID, bool IsUnsigned, | ||||||||
6331 | unsigned NumBits) { | ||||||||
6332 | ID.AddBoolean(IsUnsigned); | ||||||||
6333 | ID.AddInteger(NumBits); | ||||||||
6334 | } | ||||||||
6335 | |||||||||
6336 | static bool classof(const Type *T) { return T->getTypeClass() == ExtInt; } | ||||||||
6337 | }; | ||||||||
6338 | |||||||||
6339 | class DependentExtIntType final : public Type, public llvm::FoldingSetNode { | ||||||||
6340 | friend class ASTContext; | ||||||||
6341 | const ASTContext &Context; | ||||||||
6342 | llvm::PointerIntPair<Expr*, 1, bool> ExprAndUnsigned; | ||||||||
6343 | |||||||||
6344 | protected: | ||||||||
6345 | DependentExtIntType(const ASTContext &Context, bool IsUnsigned, | ||||||||
6346 | Expr *NumBits); | ||||||||
6347 | |||||||||
6348 | public: | ||||||||
6349 | bool isUnsigned() const; | ||||||||
6350 | bool isSigned() const { return !isUnsigned(); } | ||||||||
6351 | Expr *getNumBitsExpr() const; | ||||||||
6352 | |||||||||
6353 | bool isSugared() const { return false; } | ||||||||
6354 | QualType desugar() const { return QualType(this, 0); } | ||||||||
6355 | |||||||||
6356 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
6357 | Profile(ID, Context, isUnsigned(), getNumBitsExpr()); | ||||||||
6358 | } | ||||||||
6359 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
6360 | bool IsUnsigned, Expr *NumBitsExpr); | ||||||||
6361 | |||||||||
6362 | static bool classof(const Type *T) { | ||||||||
6363 | return T->getTypeClass() == DependentExtInt; | ||||||||
6364 | } | ||||||||
6365 | }; | ||||||||
6366 | |||||||||
6367 | /// A qualifier set is used to build a set of qualifiers. | ||||||||
6368 | class QualifierCollector : public Qualifiers { | ||||||||
6369 | public: | ||||||||
6370 | QualifierCollector(Qualifiers Qs = Qualifiers()) : Qualifiers(Qs) {} | ||||||||
6371 | |||||||||
6372 | /// Collect any qualifiers on the given type and return an | ||||||||
6373 | /// unqualified type. The qualifiers are assumed to be consistent | ||||||||
6374 | /// with those already in the type. | ||||||||
6375 | const Type *strip(QualType type) { | ||||||||
6376 | addFastQualifiers(type.getLocalFastQualifiers()); | ||||||||
6377 | if (!type.hasLocalNonFastQualifiers()) | ||||||||
6378 | return type.getTypePtrUnsafe(); | ||||||||
6379 | |||||||||
6380 | const ExtQuals *extQuals = type.getExtQualsUnsafe(); | ||||||||
6381 | addConsistentQualifiers(extQuals->getQualifiers()); | ||||||||
6382 | return extQuals->getBaseType(); | ||||||||
6383 | } | ||||||||
6384 | |||||||||
6385 | /// Apply the collected qualifiers to the given type. | ||||||||
6386 | QualType apply(const ASTContext &Context, QualType QT) const; | ||||||||
6387 | |||||||||
6388 | /// Apply the collected qualifiers to the given type. | ||||||||
6389 | QualType apply(const ASTContext &Context, const Type* T) const; | ||||||||
6390 | }; | ||||||||
6391 | |||||||||
6392 | /// A container of type source information. | ||||||||
6393 | /// | ||||||||
6394 | /// A client can read the relevant info using TypeLoc wrappers, e.g: | ||||||||
6395 | /// @code | ||||||||
6396 | /// TypeLoc TL = TypeSourceInfo->getTypeLoc(); | ||||||||
6397 | /// TL.getBeginLoc().print(OS, SrcMgr); | ||||||||
6398 | /// @endcode | ||||||||
6399 | class alignas(8) TypeSourceInfo { | ||||||||
6400 | // Contains a memory block after the class, used for type source information, | ||||||||
6401 | // allocated by ASTContext. | ||||||||
6402 | friend class ASTContext; | ||||||||
6403 | |||||||||
6404 | QualType Ty; | ||||||||
6405 | |||||||||
6406 | TypeSourceInfo(QualType ty) : Ty(ty) {} | ||||||||
6407 | |||||||||
6408 | public: | ||||||||
6409 | /// Return the type wrapped by this type source info. | ||||||||
6410 | QualType getType() const { return Ty; } | ||||||||
6411 | |||||||||
6412 | /// Return the TypeLoc wrapper for the type source info. | ||||||||
6413 | TypeLoc getTypeLoc() const; // implemented in TypeLoc.h | ||||||||
6414 | |||||||||
6415 | /// Override the type stored in this TypeSourceInfo. Use with caution! | ||||||||
6416 | void overrideType(QualType T) { Ty = T; } | ||||||||
6417 | }; | ||||||||
6418 | |||||||||
6419 | // Inline function definitions. | ||||||||
6420 | |||||||||
6421 | inline SplitQualType SplitQualType::getSingleStepDesugaredType() const { | ||||||||
6422 | SplitQualType desugar = | ||||||||
6423 | Ty->getLocallyUnqualifiedSingleStepDesugaredType().split(); | ||||||||
6424 | desugar.Quals.addConsistentQualifiers(Quals); | ||||||||
6425 | return desugar; | ||||||||
6426 | } | ||||||||
6427 | |||||||||
6428 | inline const Type *QualType::getTypePtr() const { | ||||||||
6429 | return getCommonPtr()->BaseType; | ||||||||
6430 | } | ||||||||
6431 | |||||||||
6432 | inline const Type *QualType::getTypePtrOrNull() const { | ||||||||
6433 | return (isNull() ? nullptr : getCommonPtr()->BaseType); | ||||||||
6434 | } | ||||||||
6435 | |||||||||
6436 | inline SplitQualType QualType::split() const { | ||||||||
6437 | if (!hasLocalNonFastQualifiers()) | ||||||||
6438 | return SplitQualType(getTypePtrUnsafe(), | ||||||||
6439 | Qualifiers::fromFastMask(getLocalFastQualifiers())); | ||||||||
6440 | |||||||||
6441 | const ExtQuals *eq = getExtQualsUnsafe(); | ||||||||
6442 | Qualifiers qs = eq->getQualifiers(); | ||||||||
6443 | qs.addFastQualifiers(getLocalFastQualifiers()); | ||||||||
6444 | return SplitQualType(eq->getBaseType(), qs); | ||||||||
6445 | } | ||||||||
6446 | |||||||||
6447 | inline Qualifiers QualType::getLocalQualifiers() const { | ||||||||
6448 | Qualifiers Quals; | ||||||||
6449 | if (hasLocalNonFastQualifiers()) | ||||||||
6450 | Quals = getExtQualsUnsafe()->getQualifiers(); | ||||||||
6451 | Quals.addFastQualifiers(getLocalFastQualifiers()); | ||||||||
6452 | return Quals; | ||||||||
6453 | } | ||||||||
6454 | |||||||||
6455 | inline Qualifiers QualType::getQualifiers() const { | ||||||||
6456 | Qualifiers quals = getCommonPtr()->CanonicalType.getLocalQualifiers(); | ||||||||
6457 | quals.addFastQualifiers(getLocalFastQualifiers()); | ||||||||
6458 | return quals; | ||||||||
6459 | } | ||||||||
6460 | |||||||||
6461 | inline unsigned QualType::getCVRQualifiers() const { | ||||||||
6462 | unsigned cvr = getCommonPtr()->CanonicalType.getLocalCVRQualifiers(); | ||||||||
6463 | cvr |= getLocalCVRQualifiers(); | ||||||||
6464 | return cvr; | ||||||||
6465 | } | ||||||||
6466 | |||||||||
6467 | inline QualType QualType::getCanonicalType() const { | ||||||||
6468 | QualType canon = getCommonPtr()->CanonicalType; | ||||||||
6469 | return canon.withFastQualifiers(getLocalFastQualifiers()); | ||||||||
6470 | } | ||||||||
6471 | |||||||||
6472 | inline bool QualType::isCanonical() const { | ||||||||
6473 | return getTypePtr()->isCanonicalUnqualified(); | ||||||||
6474 | } | ||||||||
6475 | |||||||||
6476 | inline bool QualType::isCanonicalAsParam() const { | ||||||||
6477 | if (!isCanonical()) return false; | ||||||||
6478 | if (hasLocalQualifiers()) return false; | ||||||||
6479 | |||||||||
6480 | const Type *T = getTypePtr(); | ||||||||
6481 | if (T->isVariablyModifiedType() && T->hasSizedVLAType()) | ||||||||
6482 | return false; | ||||||||
6483 | |||||||||
6484 | return !isa<FunctionType>(T) && !isa<ArrayType>(T); | ||||||||
6485 | } | ||||||||
6486 | |||||||||
6487 | inline bool QualType::isConstQualified() const { | ||||||||
6488 | return isLocalConstQualified() || | ||||||||
6489 | getCommonPtr()->CanonicalType.isLocalConstQualified(); | ||||||||
6490 | } | ||||||||
6491 | |||||||||
6492 | inline bool QualType::isRestrictQualified() const { | ||||||||
6493 | return isLocalRestrictQualified() || | ||||||||
6494 | getCommonPtr()->CanonicalType.isLocalRestrictQualified(); | ||||||||
6495 | } | ||||||||
6496 | |||||||||
6497 | |||||||||
6498 | inline bool QualType::isVolatileQualified() const { | ||||||||
6499 | return isLocalVolatileQualified() || | ||||||||
6500 | getCommonPtr()->CanonicalType.isLocalVolatileQualified(); | ||||||||
6501 | } | ||||||||
6502 | |||||||||
6503 | inline bool QualType::hasQualifiers() const { | ||||||||
6504 | return hasLocalQualifiers() || | ||||||||
6505 | getCommonPtr()->CanonicalType.hasLocalQualifiers(); | ||||||||
6506 | } | ||||||||
6507 | |||||||||
6508 | inline QualType QualType::getUnqualifiedType() const { | ||||||||
6509 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) | ||||||||
6510 | return QualType(getTypePtr(), 0); | ||||||||
6511 | |||||||||
6512 | return QualType(getSplitUnqualifiedTypeImpl(*this).Ty, 0); | ||||||||
6513 | } | ||||||||
6514 | |||||||||
6515 | inline SplitQualType QualType::getSplitUnqualifiedType() const { | ||||||||
6516 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) | ||||||||
6517 | return split(); | ||||||||
6518 | |||||||||
6519 | return getSplitUnqualifiedTypeImpl(*this); | ||||||||
6520 | } | ||||||||
6521 | |||||||||
6522 | inline void QualType::removeLocalConst() { | ||||||||
6523 | removeLocalFastQualifiers(Qualifiers::Const); | ||||||||
6524 | } | ||||||||
6525 | |||||||||
6526 | inline void QualType::removeLocalRestrict() { | ||||||||
6527 | removeLocalFastQualifiers(Qualifiers::Restrict); | ||||||||
6528 | } | ||||||||
6529 | |||||||||
6530 | inline void QualType::removeLocalVolatile() { | ||||||||
6531 | removeLocalFastQualifiers(Qualifiers::Volatile); | ||||||||
6532 | } | ||||||||
6533 | |||||||||
6534 | inline void QualType::removeLocalCVRQualifiers(unsigned Mask) { | ||||||||
6535 | assert(!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits")(static_cast <bool> (!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits") ? void (0) : __assert_fail ("!(Mask & ~Qualifiers::CVRMask) && \"mask has non-CVR bits\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 6535, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6536 | static_assert((int)Qualifiers::CVRMask == (int)Qualifiers::FastMask, | ||||||||
6537 | "Fast bits differ from CVR bits!"); | ||||||||
6538 | |||||||||
6539 | // Fast path: we don't need to touch the slow qualifiers. | ||||||||
6540 | removeLocalFastQualifiers(Mask); | ||||||||
6541 | } | ||||||||
6542 | |||||||||
6543 | /// Check if this type has any address space qualifier. | ||||||||
6544 | inline bool QualType::hasAddressSpace() const { | ||||||||
6545 | return getQualifiers().hasAddressSpace(); | ||||||||
6546 | } | ||||||||
6547 | |||||||||
6548 | /// Return the address space of this type. | ||||||||
6549 | inline LangAS QualType::getAddressSpace() const { | ||||||||
6550 | return getQualifiers().getAddressSpace(); | ||||||||
6551 | } | ||||||||
6552 | |||||||||
6553 | /// Return the gc attribute of this type. | ||||||||
6554 | inline Qualifiers::GC QualType::getObjCGCAttr() const { | ||||||||
6555 | return getQualifiers().getObjCGCAttr(); | ||||||||
6556 | } | ||||||||
6557 | |||||||||
6558 | inline bool QualType::hasNonTrivialToPrimitiveDefaultInitializeCUnion() const { | ||||||||
6559 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||
6560 | return hasNonTrivialToPrimitiveDefaultInitializeCUnion(RD); | ||||||||
6561 | return false; | ||||||||
6562 | } | ||||||||
6563 | |||||||||
6564 | inline bool QualType::hasNonTrivialToPrimitiveDestructCUnion() const { | ||||||||
6565 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||
6566 | return hasNonTrivialToPrimitiveDestructCUnion(RD); | ||||||||
6567 | return false; | ||||||||
6568 | } | ||||||||
6569 | |||||||||
6570 | inline bool QualType::hasNonTrivialToPrimitiveCopyCUnion() const { | ||||||||
6571 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||
6572 | return hasNonTrivialToPrimitiveCopyCUnion(RD); | ||||||||
6573 | return false; | ||||||||
6574 | } | ||||||||
6575 | |||||||||
6576 | inline FunctionType::ExtInfo getFunctionExtInfo(const Type &t) { | ||||||||
6577 | if (const auto *PT = t.getAs<PointerType>()) { | ||||||||
6578 | if (const auto *FT = PT->getPointeeType()->getAs<FunctionType>()) | ||||||||
6579 | return FT->getExtInfo(); | ||||||||
6580 | } else if (const auto *FT = t.getAs<FunctionType>()) | ||||||||
6581 | return FT->getExtInfo(); | ||||||||
6582 | |||||||||
6583 | return FunctionType::ExtInfo(); | ||||||||
6584 | } | ||||||||
6585 | |||||||||
6586 | inline FunctionType::ExtInfo getFunctionExtInfo(QualType t) { | ||||||||
6587 | return getFunctionExtInfo(*t); | ||||||||
6588 | } | ||||||||
6589 | |||||||||
6590 | /// Determine whether this type is more | ||||||||
6591 | /// qualified than the Other type. For example, "const volatile int" | ||||||||
6592 | /// is more qualified than "const int", "volatile int", and | ||||||||
6593 | /// "int". However, it is not more qualified than "const volatile | ||||||||
6594 | /// int". | ||||||||
6595 | inline bool QualType::isMoreQualifiedThan(QualType other) const { | ||||||||
6596 | Qualifiers MyQuals = getQualifiers(); | ||||||||
6597 | Qualifiers OtherQuals = other.getQualifiers(); | ||||||||
6598 | return (MyQuals != OtherQuals && MyQuals.compatiblyIncludes(OtherQuals)); | ||||||||
6599 | } | ||||||||
6600 | |||||||||
6601 | /// Determine whether this type is at last | ||||||||
6602 | /// as qualified as the Other type. For example, "const volatile | ||||||||
6603 | /// int" is at least as qualified as "const int", "volatile int", | ||||||||
6604 | /// "int", and "const volatile int". | ||||||||
6605 | inline bool QualType::isAtLeastAsQualifiedAs(QualType other) const { | ||||||||
6606 | Qualifiers OtherQuals = other.getQualifiers(); | ||||||||
6607 | |||||||||
6608 | // Ignore __unaligned qualifier if this type is a void. | ||||||||
6609 | if (getUnqualifiedType()->isVoidType()) | ||||||||
6610 | OtherQuals.removeUnaligned(); | ||||||||
6611 | |||||||||
6612 | return getQualifiers().compatiblyIncludes(OtherQuals); | ||||||||
6613 | } | ||||||||
6614 | |||||||||
6615 | /// If Type is a reference type (e.g., const | ||||||||
6616 | /// int&), returns the type that the reference refers to ("const | ||||||||
6617 | /// int"). Otherwise, returns the type itself. This routine is used | ||||||||
6618 | /// throughout Sema to implement C++ 5p6: | ||||||||
6619 | /// | ||||||||
6620 | /// If an expression initially has the type "reference to T" (8.3.2, | ||||||||
6621 | /// 8.5.3), the type is adjusted to "T" prior to any further | ||||||||
6622 | /// analysis, the expression designates the object or function | ||||||||
6623 | /// denoted by the reference, and the expression is an lvalue. | ||||||||
6624 | inline QualType QualType::getNonReferenceType() const { | ||||||||
6625 | if (const auto *RefType = (*this)->getAs<ReferenceType>()) | ||||||||
6626 | return RefType->getPointeeType(); | ||||||||
6627 | else | ||||||||
6628 | return *this; | ||||||||
6629 | } | ||||||||
6630 | |||||||||
6631 | inline bool QualType::isCForbiddenLValueType() const { | ||||||||
6632 | return ((getTypePtr()->isVoidType() && !hasQualifiers()) || | ||||||||
6633 | getTypePtr()->isFunctionType()); | ||||||||
6634 | } | ||||||||
6635 | |||||||||
6636 | /// Tests whether the type is categorized as a fundamental type. | ||||||||
6637 | /// | ||||||||
6638 | /// \returns True for types specified in C++0x [basic.fundamental]. | ||||||||
6639 | inline bool Type::isFundamentalType() const { | ||||||||
6640 | return isVoidType() || | ||||||||
6641 | isNullPtrType() || | ||||||||
6642 | // FIXME: It's really annoying that we don't have an | ||||||||
6643 | // 'isArithmeticType()' which agrees with the standard definition. | ||||||||
6644 | (isArithmeticType() && !isEnumeralType()); | ||||||||
6645 | } | ||||||||
6646 | |||||||||
6647 | /// Tests whether the type is categorized as a compound type. | ||||||||
6648 | /// | ||||||||
6649 | /// \returns True for types specified in C++0x [basic.compound]. | ||||||||
6650 | inline bool Type::isCompoundType() const { | ||||||||
6651 | // C++0x [basic.compound]p1: | ||||||||
6652 | // Compound types can be constructed in the following ways: | ||||||||
6653 | // -- arrays of objects of a given type [...]; | ||||||||
6654 | return isArrayType() || | ||||||||
6655 | // -- functions, which have parameters of given types [...]; | ||||||||
6656 | isFunctionType() || | ||||||||
6657 | // -- pointers to void or objects or functions [...]; | ||||||||
6658 | isPointerType() || | ||||||||
6659 | // -- references to objects or functions of a given type. [...] | ||||||||
6660 | isReferenceType() || | ||||||||
6661 | // -- classes containing a sequence of objects of various types, [...]; | ||||||||
6662 | isRecordType() || | ||||||||
6663 | // -- unions, which are classes capable of containing objects of different | ||||||||
6664 | // types at different times; | ||||||||
6665 | isUnionType() || | ||||||||
6666 | // -- enumerations, which comprise a set of named constant values. [...]; | ||||||||
6667 | isEnumeralType() || | ||||||||
6668 | // -- pointers to non-static class members, [...]. | ||||||||
6669 | isMemberPointerType(); | ||||||||
6670 | } | ||||||||
6671 | |||||||||
6672 | inline bool Type::isFunctionType() const { | ||||||||
6673 | return isa<FunctionType>(CanonicalType); | ||||||||
6674 | } | ||||||||
6675 | |||||||||
6676 | inline bool Type::isPointerType() const { | ||||||||
6677 | return isa<PointerType>(CanonicalType); | ||||||||
6678 | } | ||||||||
6679 | |||||||||
6680 | inline bool Type::isAnyPointerType() const { | ||||||||
6681 | return isPointerType() || isObjCObjectPointerType(); | ||||||||
6682 | } | ||||||||
6683 | |||||||||
6684 | inline bool Type::isBlockPointerType() const { | ||||||||
6685 | return isa<BlockPointerType>(CanonicalType); | ||||||||
6686 | } | ||||||||
6687 | |||||||||
6688 | inline bool Type::isReferenceType() const { | ||||||||
6689 | return isa<ReferenceType>(CanonicalType); | ||||||||
6690 | } | ||||||||
6691 | |||||||||
6692 | inline bool Type::isLValueReferenceType() const { | ||||||||
6693 | return isa<LValueReferenceType>(CanonicalType); | ||||||||
6694 | } | ||||||||
6695 | |||||||||
6696 | inline bool Type::isRValueReferenceType() const { | ||||||||
6697 | return isa<RValueReferenceType>(CanonicalType); | ||||||||
6698 | } | ||||||||
6699 | |||||||||
6700 | inline bool Type::isObjectPointerType() const { | ||||||||
6701 | // Note: an "object pointer type" is not the same thing as a pointer to an | ||||||||
6702 | // object type; rather, it is a pointer to an object type or a pointer to cv | ||||||||
6703 | // void. | ||||||||
6704 | if (const auto *T = getAs<PointerType>()) | ||||||||
6705 | return !T->getPointeeType()->isFunctionType(); | ||||||||
6706 | else | ||||||||
6707 | return false; | ||||||||
6708 | } | ||||||||
6709 | |||||||||
6710 | inline bool Type::isFunctionPointerType() const { | ||||||||
6711 | if (const auto *T = getAs<PointerType>()) | ||||||||
6712 | return T->getPointeeType()->isFunctionType(); | ||||||||
6713 | else | ||||||||
6714 | return false; | ||||||||
6715 | } | ||||||||
6716 | |||||||||
6717 | inline bool Type::isFunctionReferenceType() const { | ||||||||
6718 | if (const auto *T = getAs<ReferenceType>()) | ||||||||
6719 | return T->getPointeeType()->isFunctionType(); | ||||||||
6720 | else | ||||||||
6721 | return false; | ||||||||
6722 | } | ||||||||
6723 | |||||||||
6724 | inline bool Type::isMemberPointerType() const { | ||||||||
6725 | return isa<MemberPointerType>(CanonicalType); | ||||||||
6726 | } | ||||||||
6727 | |||||||||
6728 | inline bool Type::isMemberFunctionPointerType() const { | ||||||||
6729 | if (const auto *T = getAs<MemberPointerType>()) | ||||||||
6730 | return T->isMemberFunctionPointer(); | ||||||||
6731 | else | ||||||||
6732 | return false; | ||||||||
6733 | } | ||||||||
6734 | |||||||||
6735 | inline bool Type::isMemberDataPointerType() const { | ||||||||
6736 | if (const auto *T = getAs<MemberPointerType>()) | ||||||||
6737 | return T->isMemberDataPointer(); | ||||||||
6738 | else | ||||||||
6739 | return false; | ||||||||
6740 | } | ||||||||
6741 | |||||||||
6742 | inline bool Type::isArrayType() const { | ||||||||
6743 | return isa<ArrayType>(CanonicalType); | ||||||||
6744 | } | ||||||||
6745 | |||||||||
6746 | inline bool Type::isConstantArrayType() const { | ||||||||
6747 | return isa<ConstantArrayType>(CanonicalType); | ||||||||
6748 | } | ||||||||
6749 | |||||||||
6750 | inline bool Type::isIncompleteArrayType() const { | ||||||||
6751 | return isa<IncompleteArrayType>(CanonicalType); | ||||||||
6752 | } | ||||||||
6753 | |||||||||
6754 | inline bool Type::isVariableArrayType() const { | ||||||||
6755 | return isa<VariableArrayType>(CanonicalType); | ||||||||
6756 | } | ||||||||
6757 | |||||||||
6758 | inline bool Type::isDependentSizedArrayType() const { | ||||||||
6759 | return isa<DependentSizedArrayType>(CanonicalType); | ||||||||
6760 | } | ||||||||
6761 | |||||||||
6762 | inline bool Type::isBuiltinType() const { | ||||||||
6763 | return isa<BuiltinType>(CanonicalType); | ||||||||
6764 | } | ||||||||
6765 | |||||||||
6766 | inline bool Type::isRecordType() const { | ||||||||
6767 | return isa<RecordType>(CanonicalType); | ||||||||
6768 | } | ||||||||
6769 | |||||||||
6770 | inline bool Type::isEnumeralType() const { | ||||||||
6771 | return isa<EnumType>(CanonicalType); | ||||||||
6772 | } | ||||||||
6773 | |||||||||
6774 | inline bool Type::isAnyComplexType() const { | ||||||||
6775 | return isa<ComplexType>(CanonicalType); | ||||||||
6776 | } | ||||||||
6777 | |||||||||
6778 | inline bool Type::isVectorType() const { | ||||||||
6779 | return isa<VectorType>(CanonicalType); | ||||||||
6780 | } | ||||||||
6781 | |||||||||
6782 | inline bool Type::isExtVectorType() const { | ||||||||
6783 | return isa<ExtVectorType>(CanonicalType); | ||||||||
6784 | } | ||||||||
6785 | |||||||||
6786 | inline bool Type::isMatrixType() const { | ||||||||
6787 | return isa<MatrixType>(CanonicalType); | ||||||||
6788 | } | ||||||||
6789 | |||||||||
6790 | inline bool Type::isConstantMatrixType() const { | ||||||||
6791 | return isa<ConstantMatrixType>(CanonicalType); | ||||||||
6792 | } | ||||||||
6793 | |||||||||
6794 | inline bool Type::isDependentAddressSpaceType() const { | ||||||||
6795 | return isa<DependentAddressSpaceType>(CanonicalType); | ||||||||
6796 | } | ||||||||
6797 | |||||||||
6798 | inline bool Type::isObjCObjectPointerType() const { | ||||||||
6799 | return isa<ObjCObjectPointerType>(CanonicalType); | ||||||||
6800 | } | ||||||||
6801 | |||||||||
6802 | inline bool Type::isObjCObjectType() const { | ||||||||
6803 | return isa<ObjCObjectType>(CanonicalType); | ||||||||
6804 | } | ||||||||
6805 | |||||||||
6806 | inline bool Type::isObjCObjectOrInterfaceType() const { | ||||||||
6807 | return isa<ObjCInterfaceType>(CanonicalType) || | ||||||||
6808 | isa<ObjCObjectType>(CanonicalType); | ||||||||
6809 | } | ||||||||
6810 | |||||||||
6811 | inline bool Type::isAtomicType() const { | ||||||||
6812 | return isa<AtomicType>(CanonicalType); | ||||||||
6813 | } | ||||||||
6814 | |||||||||
6815 | inline bool Type::isUndeducedAutoType() const { | ||||||||
6816 | return isa<AutoType>(CanonicalType); | ||||||||
6817 | } | ||||||||
6818 | |||||||||
6819 | inline bool Type::isObjCQualifiedIdType() const { | ||||||||
6820 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
6821 | return OPT->isObjCQualifiedIdType(); | ||||||||
6822 | return false; | ||||||||
6823 | } | ||||||||
6824 | |||||||||
6825 | inline bool Type::isObjCQualifiedClassType() const { | ||||||||
6826 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
6827 | return OPT->isObjCQualifiedClassType(); | ||||||||
6828 | return false; | ||||||||
6829 | } | ||||||||
6830 | |||||||||
6831 | inline bool Type::isObjCIdType() const { | ||||||||
6832 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
6833 | return OPT->isObjCIdType(); | ||||||||
6834 | return false; | ||||||||
6835 | } | ||||||||
6836 | |||||||||
6837 | inline bool Type::isObjCClassType() const { | ||||||||
6838 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
6839 | return OPT->isObjCClassType(); | ||||||||
6840 | return false; | ||||||||
6841 | } | ||||||||
6842 | |||||||||
6843 | inline bool Type::isObjCSelType() const { | ||||||||
6844 | if (const auto *OPT = getAs<PointerType>()) | ||||||||
6845 | return OPT->getPointeeType()->isSpecificBuiltinType(BuiltinType::ObjCSel); | ||||||||
6846 | return false; | ||||||||
6847 | } | ||||||||
6848 | |||||||||
6849 | inline bool Type::isObjCBuiltinType() const { | ||||||||
6850 | return isObjCIdType() || isObjCClassType() || isObjCSelType(); | ||||||||
6851 | } | ||||||||
6852 | |||||||||
6853 | inline bool Type::isDecltypeType() const { | ||||||||
6854 | return isa<DecltypeType>(this); | ||||||||
6855 | } | ||||||||
6856 | |||||||||
6857 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
6858 | inline bool Type::is##Id##Type() const { \ | ||||||||
6859 | return isSpecificBuiltinType(BuiltinType::Id); \ | ||||||||
6860 | } | ||||||||
6861 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
6862 | |||||||||
6863 | inline bool Type::isSamplerT() const { | ||||||||
6864 | return isSpecificBuiltinType(BuiltinType::OCLSampler); | ||||||||
6865 | } | ||||||||
6866 | |||||||||
6867 | inline bool Type::isEventT() const { | ||||||||
6868 | return isSpecificBuiltinType(BuiltinType::OCLEvent); | ||||||||
6869 | } | ||||||||
6870 | |||||||||
6871 | inline bool Type::isClkEventT() const { | ||||||||
6872 | return isSpecificBuiltinType(BuiltinType::OCLClkEvent); | ||||||||
6873 | } | ||||||||
6874 | |||||||||
6875 | inline bool Type::isQueueT() const { | ||||||||
6876 | return isSpecificBuiltinType(BuiltinType::OCLQueue); | ||||||||
6877 | } | ||||||||
6878 | |||||||||
6879 | inline bool Type::isReserveIDT() const { | ||||||||
6880 | return isSpecificBuiltinType(BuiltinType::OCLReserveID); | ||||||||
6881 | } | ||||||||
6882 | |||||||||
6883 | inline bool Type::isImageType() const { | ||||||||
6884 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) is##Id##Type() || | ||||||||
6885 | return | ||||||||
6886 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
6887 | false; // end boolean or operation | ||||||||
6888 | } | ||||||||
6889 | |||||||||
6890 | inline bool Type::isPipeType() const { | ||||||||
6891 | return isa<PipeType>(CanonicalType); | ||||||||
6892 | } | ||||||||
6893 | |||||||||
6894 | inline bool Type::isExtIntType() const { | ||||||||
6895 | return isa<ExtIntType>(CanonicalType); | ||||||||
6896 | } | ||||||||
6897 | |||||||||
6898 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
6899 | inline bool Type::is##Id##Type() const { \ | ||||||||
6900 | return isSpecificBuiltinType(BuiltinType::Id); \ | ||||||||
6901 | } | ||||||||
6902 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
6903 | |||||||||
6904 | inline bool Type::isOCLIntelSubgroupAVCType() const { | ||||||||
6905 | #define INTEL_SUBGROUP_AVC_TYPE(ExtType, Id) \ | ||||||||
6906 | isOCLIntelSubgroupAVC##Id##Type() || | ||||||||
6907 | return | ||||||||
6908 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
6909 | false; // end of boolean or operation | ||||||||
6910 | } | ||||||||
6911 | |||||||||
6912 | inline bool Type::isOCLExtOpaqueType() const { | ||||||||
6913 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) is##Id##Type() || | ||||||||
6914 | return | ||||||||
6915 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
6916 | false; // end of boolean or operation | ||||||||
6917 | } | ||||||||
6918 | |||||||||
6919 | inline bool Type::isOpenCLSpecificType() const { | ||||||||
6920 | return isSamplerT() || isEventT() || isImageType() || isClkEventT() || | ||||||||
6921 | isQueueT() || isReserveIDT() || isPipeType() || isOCLExtOpaqueType(); | ||||||||
6922 | } | ||||||||
6923 | |||||||||
6924 | inline bool Type::isTemplateTypeParmType() const { | ||||||||
6925 | return isa<TemplateTypeParmType>(CanonicalType); | ||||||||
6926 | } | ||||||||
6927 | |||||||||
6928 | inline bool Type::isSpecificBuiltinType(unsigned K) const { | ||||||||
6929 | if (const BuiltinType *BT
| ||||||||
6930 | return BT->getKind() == static_cast<BuiltinType::Kind>(K); | ||||||||
6931 | } | ||||||||
6932 | return false; | ||||||||
6933 | } | ||||||||
6934 | |||||||||
6935 | inline bool Type::isPlaceholderType() const { | ||||||||
6936 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||
6937 | return BT->isPlaceholderType(); | ||||||||
6938 | return false; | ||||||||
6939 | } | ||||||||
6940 | |||||||||
6941 | inline const BuiltinType *Type::getAsPlaceholderType() const { | ||||||||
6942 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||
6943 | if (BT->isPlaceholderType()) | ||||||||
6944 | return BT; | ||||||||
6945 | return nullptr; | ||||||||
6946 | } | ||||||||
6947 | |||||||||
6948 | inline bool Type::isSpecificPlaceholderType(unsigned K) const { | ||||||||
6949 | assert(BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K))(static_cast <bool> (BuiltinType::isPlaceholderTypeKind ((BuiltinType::Kind) K)) ? void (0) : __assert_fail ("BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 6949, __extension__ __PRETTY_FUNCTION__)); | ||||||||
6950 | return isSpecificBuiltinType(K); | ||||||||
6951 | } | ||||||||
6952 | |||||||||
6953 | inline bool Type::isNonOverloadPlaceholderType() const { | ||||||||
6954 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||
6955 | return BT->isNonOverloadPlaceholderType(); | ||||||||
6956 | return false; | ||||||||
6957 | } | ||||||||
6958 | |||||||||
6959 | inline bool Type::isVoidType() const { | ||||||||
6960 | return isSpecificBuiltinType(BuiltinType::Void); | ||||||||
6961 | } | ||||||||
6962 | |||||||||
6963 | inline bool Type::isHalfType() const { | ||||||||
6964 | // FIXME: Should we allow complex __fp16? Probably not. | ||||||||
6965 | return isSpecificBuiltinType(BuiltinType::Half); | ||||||||
6966 | } | ||||||||
6967 | |||||||||
6968 | inline bool Type::isFloat16Type() const { | ||||||||
6969 | return isSpecificBuiltinType(BuiltinType::Float16); | ||||||||
6970 | } | ||||||||
6971 | |||||||||
6972 | inline bool Type::isBFloat16Type() const { | ||||||||
6973 | return isSpecificBuiltinType(BuiltinType::BFloat16); | ||||||||
6974 | } | ||||||||
6975 | |||||||||
6976 | inline bool Type::isFloat128Type() const { | ||||||||
6977 | return isSpecificBuiltinType(BuiltinType::Float128); | ||||||||
6978 | } | ||||||||
6979 | |||||||||
6980 | inline bool Type::isNullPtrType() const { | ||||||||
6981 | return isSpecificBuiltinType(BuiltinType::NullPtr); | ||||||||
6982 | } | ||||||||
6983 | |||||||||
6984 | bool IsEnumDeclComplete(EnumDecl *); | ||||||||
6985 | bool IsEnumDeclScoped(EnumDecl *); | ||||||||
6986 | |||||||||
6987 | inline bool Type::isIntegerType() const { | ||||||||
6988 | if (const auto *BT
| ||||||||
6989 | return BT->getKind() >= BuiltinType::Bool && | ||||||||
6990 | BT->getKind() <= BuiltinType::Int128; | ||||||||
6991 | if (const EnumType *ET
| ||||||||
6992 | // Incomplete enum types are not treated as integer types. | ||||||||
6993 | // FIXME: In C++, enum types are never integer types. | ||||||||
6994 | return IsEnumDeclComplete(ET->getDecl()) && | ||||||||
6995 | !IsEnumDeclScoped(ET->getDecl()); | ||||||||
6996 | } | ||||||||
6997 | return isExtIntType(); | ||||||||
6998 | } | ||||||||
6999 | |||||||||
7000 | inline bool Type::isFixedPointType() const { | ||||||||
7001 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||
7002 | return BT->getKind() >= BuiltinType::ShortAccum && | ||||||||
7003 | BT->getKind() <= BuiltinType::SatULongFract; | ||||||||
7004 | } | ||||||||
7005 | return false; | ||||||||
7006 | } | ||||||||
7007 | |||||||||
7008 | inline bool Type::isFixedPointOrIntegerType() const { | ||||||||
7009 | return isFixedPointType() || isIntegerType(); | ||||||||
7010 | } | ||||||||
7011 | |||||||||
7012 | inline bool Type::isSaturatedFixedPointType() const { | ||||||||
7013 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||
7014 | return BT->getKind() >= BuiltinType::SatShortAccum && | ||||||||
7015 | BT->getKind() <= BuiltinType::SatULongFract; | ||||||||
7016 | } | ||||||||
7017 | return false; | ||||||||
7018 | } | ||||||||
7019 | |||||||||
7020 | inline bool Type::isUnsaturatedFixedPointType() const { | ||||||||
7021 | return isFixedPointType() && !isSaturatedFixedPointType(); | ||||||||
7022 | } | ||||||||
7023 | |||||||||
7024 | inline bool Type::isSignedFixedPointType() const { | ||||||||
7025 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||
7026 | return ((BT->getKind() >= BuiltinType::ShortAccum && | ||||||||
7027 | BT->getKind() <= BuiltinType::LongAccum) || | ||||||||
7028 | (BT->getKind() >= BuiltinType::ShortFract && | ||||||||
7029 | BT->getKind() <= BuiltinType::LongFract) || | ||||||||
7030 | (BT->getKind() >= BuiltinType::SatShortAccum && | ||||||||
7031 | BT->getKind() <= BuiltinType::SatLongAccum) || | ||||||||
7032 | (BT->getKind() >= BuiltinType::SatShortFract && | ||||||||
7033 | BT->getKind() <= BuiltinType::SatLongFract)); | ||||||||
7034 | } | ||||||||
7035 | return false; | ||||||||
7036 | } | ||||||||
7037 | |||||||||
7038 | inline bool Type::isUnsignedFixedPointType() const { | ||||||||
7039 | return isFixedPointType() && !isSignedFixedPointType(); | ||||||||
7040 | } | ||||||||
7041 | |||||||||
7042 | inline bool Type::isScalarType() const { | ||||||||
7043 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||
7044 | return BT->getKind() > BuiltinType::Void && | ||||||||
7045 | BT->getKind() <= BuiltinType::NullPtr; | ||||||||
7046 | if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) | ||||||||
7047 | // Enums are scalar types, but only if they are defined. Incomplete enums | ||||||||
7048 | // are not treated as scalar types. | ||||||||
7049 | return IsEnumDeclComplete(ET->getDecl()); | ||||||||
7050 | return isa<PointerType>(CanonicalType) || | ||||||||
7051 | isa<BlockPointerType>(CanonicalType) || | ||||||||
7052 | isa<MemberPointerType>(CanonicalType) || | ||||||||
7053 | isa<ComplexType>(CanonicalType) || | ||||||||
7054 | isa<ObjCObjectPointerType>(CanonicalType) || | ||||||||
7055 | isExtIntType(); | ||||||||
7056 | } | ||||||||
7057 | |||||||||
7058 | inline bool Type::isIntegralOrEnumerationType() const { | ||||||||
7059 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||
7060 | return BT->getKind() >= BuiltinType::Bool && | ||||||||
7061 | BT->getKind() <= BuiltinType::Int128; | ||||||||
7062 | |||||||||
7063 | // Check for a complete enum type; incomplete enum types are not properly an | ||||||||
7064 | // enumeration type in the sense required here. | ||||||||
7065 | if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) | ||||||||
7066 | return IsEnumDeclComplete(ET->getDecl()); | ||||||||
7067 | |||||||||
7068 | return isExtIntType(); | ||||||||
7069 | } | ||||||||
7070 | |||||||||
7071 | inline bool Type::isBooleanType() const { | ||||||||
7072 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||
7073 | return BT->getKind() == BuiltinType::Bool; | ||||||||
7074 | return false; | ||||||||
7075 | } | ||||||||
7076 | |||||||||
7077 | inline bool Type::isUndeducedType() const { | ||||||||
7078 | auto *DT = getContainedDeducedType(); | ||||||||
7079 | return DT && !DT->isDeduced(); | ||||||||
7080 | } | ||||||||
7081 | |||||||||
7082 | /// Determines whether this is a type for which one can define | ||||||||
7083 | /// an overloaded operator. | ||||||||
7084 | inline bool Type::isOverloadableType() const { | ||||||||
7085 | return isDependentType() || isRecordType() || isEnumeralType(); | ||||||||
7086 | } | ||||||||
7087 | |||||||||
7088 | /// Determines whether this type is written as a typedef-name. | ||||||||
7089 | inline bool Type::isTypedefNameType() const { | ||||||||
7090 | if (getAs<TypedefType>()) | ||||||||
7091 | return true; | ||||||||
7092 | if (auto *TST = getAs<TemplateSpecializationType>()) | ||||||||
7093 | return TST->isTypeAlias(); | ||||||||
7094 | return false; | ||||||||
7095 | } | ||||||||
7096 | |||||||||
7097 | /// Determines whether this type can decay to a pointer type. | ||||||||
7098 | inline bool Type::canDecayToPointerType() const { | ||||||||
7099 | return isFunctionType() || isArrayType(); | ||||||||
7100 | } | ||||||||
7101 | |||||||||
7102 | inline bool Type::hasPointerRepresentation() const { | ||||||||
7103 | return (isPointerType() || isReferenceType() || isBlockPointerType() || | ||||||||
7104 | isObjCObjectPointerType() || isNullPtrType()); | ||||||||
7105 | } | ||||||||
7106 | |||||||||
7107 | inline bool Type::hasObjCPointerRepresentation() const { | ||||||||
7108 | return isObjCObjectPointerType(); | ||||||||
7109 | } | ||||||||
7110 | |||||||||
7111 | inline const Type *Type::getBaseElementTypeUnsafe() const { | ||||||||
7112 | const Type *type = this; | ||||||||
7113 | while (const ArrayType *arrayType = type->getAsArrayTypeUnsafe()) | ||||||||
7114 | type = arrayType->getElementType().getTypePtr(); | ||||||||
7115 | return type; | ||||||||
7116 | } | ||||||||
7117 | |||||||||
7118 | inline const Type *Type::getPointeeOrArrayElementType() const { | ||||||||
7119 | const Type *type = this; | ||||||||
7120 | if (type->isAnyPointerType()) | ||||||||
7121 | return type->getPointeeType().getTypePtr(); | ||||||||
7122 | else if (type->isArrayType()) | ||||||||
7123 | return type->getBaseElementTypeUnsafe(); | ||||||||
7124 | return type; | ||||||||
7125 | } | ||||||||
7126 | /// Insertion operator for partial diagnostics. This allows sending adress | ||||||||
7127 | /// spaces into a diagnostic with <<. | ||||||||
7128 | inline const StreamingDiagnostic &operator<<(const StreamingDiagnostic &PD, | ||||||||
7129 | LangAS AS) { | ||||||||
7130 | PD.AddTaggedVal(static_cast<std::underlying_type_t<LangAS>>(AS), | ||||||||
7131 | DiagnosticsEngine::ArgumentKind::ak_addrspace); | ||||||||
7132 | return PD; | ||||||||
7133 | } | ||||||||
7134 | |||||||||
7135 | /// Insertion operator for partial diagnostics. This allows sending Qualifiers | ||||||||
7136 | /// into a diagnostic with <<. | ||||||||
7137 | inline const StreamingDiagnostic &operator<<(const StreamingDiagnostic &PD, | ||||||||
7138 | Qualifiers Q) { | ||||||||
7139 | PD.AddTaggedVal(Q.getAsOpaqueValue(), | ||||||||
7140 | DiagnosticsEngine::ArgumentKind::ak_qual); | ||||||||
7141 | return PD; | ||||||||
7142 | } | ||||||||
7143 | |||||||||
7144 | /// Insertion operator for partial diagnostics. This allows sending QualType's | ||||||||
7145 | /// into a diagnostic with <<. | ||||||||
7146 | inline const StreamingDiagnostic &operator<<(const StreamingDiagnostic &PD, | ||||||||
7147 | QualType T) { | ||||||||
7148 | PD.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), | ||||||||
7149 | DiagnosticsEngine::ak_qualtype); | ||||||||
7150 | return PD; | ||||||||
7151 | } | ||||||||
7152 | |||||||||
7153 | // Helper class template that is used by Type::getAs to ensure that one does | ||||||||
7154 | // not try to look through a qualified type to get to an array type. | ||||||||
7155 | template <typename T> | ||||||||
7156 | using TypeIsArrayType = | ||||||||
7157 | std::integral_constant<bool, std::is_same<T, ArrayType>::value || | ||||||||
7158 | std::is_base_of<ArrayType, T>::value>; | ||||||||
7159 | |||||||||
7160 | // Member-template getAs<specific type>'. | ||||||||
7161 | template <typename T> const T *Type::getAs() const { | ||||||||
7162 | static_assert(!TypeIsArrayType<T>::value, | ||||||||
7163 | "ArrayType cannot be used with getAs!"); | ||||||||
7164 | |||||||||
7165 | // If this is directly a T type, return it. | ||||||||
7166 | if (const auto *Ty = dyn_cast<T>(this)) | ||||||||
7167 | return Ty; | ||||||||
7168 | |||||||||
7169 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||
7170 | if (!isa<T>(CanonicalType)) | ||||||||
7171 | return nullptr; | ||||||||
7172 | |||||||||
7173 | // If this is a typedef for the type, strip the typedef off without | ||||||||
7174 | // losing all typedef information. | ||||||||
7175 | return cast<T>(getUnqualifiedDesugaredType()); | ||||||||
7176 | } | ||||||||
7177 | |||||||||
7178 | template <typename T> const T *Type::getAsAdjusted() const { | ||||||||
7179 | static_assert(!TypeIsArrayType<T>::value, "ArrayType cannot be used with getAsAdjusted!"); | ||||||||
7180 | |||||||||
7181 | // If this is directly a T type, return it. | ||||||||
7182 | if (const auto *Ty = dyn_cast<T>(this)) | ||||||||
7183 | return Ty; | ||||||||
7184 | |||||||||
7185 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||
7186 | if (!isa<T>(CanonicalType)) | ||||||||
7187 | return nullptr; | ||||||||
7188 | |||||||||
7189 | // Strip off type adjustments that do not modify the underlying nature of the | ||||||||
7190 | // type. | ||||||||
7191 | const Type *Ty = this; | ||||||||
7192 | while (Ty) { | ||||||||
7193 | if (const auto *A = dyn_cast<AttributedType>(Ty)) | ||||||||
7194 | Ty = A->getModifiedType().getTypePtr(); | ||||||||
7195 | else if (const auto *E = dyn_cast<ElaboratedType>(Ty)) | ||||||||
7196 | Ty = E->desugar().getTypePtr(); | ||||||||
7197 | else if (const auto *P = dyn_cast<ParenType>(Ty)) | ||||||||
7198 | Ty = P->desugar().getTypePtr(); | ||||||||
7199 | else if (const auto *A = dyn_cast<AdjustedType>(Ty)) | ||||||||
7200 | Ty = A->desugar().getTypePtr(); | ||||||||
7201 | else if (const auto *M = dyn_cast<MacroQualifiedType>(Ty)) | ||||||||
7202 | Ty = M->desugar().getTypePtr(); | ||||||||
7203 | else | ||||||||
7204 | break; | ||||||||
7205 | } | ||||||||
7206 | |||||||||
7207 | // Just because the canonical type is correct does not mean we can use cast<>, | ||||||||
7208 | // since we may not have stripped off all the sugar down to the base type. | ||||||||
7209 | return dyn_cast<T>(Ty); | ||||||||
7210 | } | ||||||||
7211 | |||||||||
7212 | inline const ArrayType *Type::getAsArrayTypeUnsafe() const { | ||||||||
7213 | // If this is directly an array type, return it. | ||||||||
7214 | if (const auto *arr = dyn_cast<ArrayType>(this)) | ||||||||
7215 | return arr; | ||||||||
7216 | |||||||||
7217 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||
7218 | if (!isa<ArrayType>(CanonicalType)) | ||||||||
7219 | return nullptr; | ||||||||
7220 | |||||||||
7221 | // If this is a typedef for the type, strip the typedef off without | ||||||||
7222 | // losing all typedef information. | ||||||||
7223 | return cast<ArrayType>(getUnqualifiedDesugaredType()); | ||||||||
7224 | } | ||||||||
7225 | |||||||||
7226 | template <typename T> const T *Type::castAs() const { | ||||||||
7227 | static_assert(!TypeIsArrayType<T>::value, | ||||||||
7228 | "ArrayType cannot be used with castAs!"); | ||||||||
7229 | |||||||||
7230 | if (const auto *ty = dyn_cast<T>(this)) return ty; | ||||||||
7231 | assert(isa<T>(CanonicalType))(static_cast <bool> (isa<T>(CanonicalType)) ? void (0) : __assert_fail ("isa<T>(CanonicalType)", "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 7231, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7232 | return cast<T>(getUnqualifiedDesugaredType()); | ||||||||
7233 | } | ||||||||
7234 | |||||||||
7235 | inline const ArrayType *Type::castAsArrayTypeUnsafe() const { | ||||||||
7236 | assert(isa<ArrayType>(CanonicalType))(static_cast <bool> (isa<ArrayType>(CanonicalType )) ? void (0) : __assert_fail ("isa<ArrayType>(CanonicalType)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 7236, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7237 | if (const auto *arr = dyn_cast<ArrayType>(this)) return arr; | ||||||||
7238 | return cast<ArrayType>(getUnqualifiedDesugaredType()); | ||||||||
7239 | } | ||||||||
7240 | |||||||||
7241 | DecayedType::DecayedType(QualType OriginalType, QualType DecayedPtr, | ||||||||
7242 | QualType CanonicalPtr) | ||||||||
7243 | : AdjustedType(Decayed, OriginalType, DecayedPtr, CanonicalPtr) { | ||||||||
7244 | #ifndef NDEBUG | ||||||||
7245 | QualType Adjusted = getAdjustedType(); | ||||||||
7246 | (void)AttributedType::stripOuterNullability(Adjusted); | ||||||||
7247 | assert(isa<PointerType>(Adjusted))(static_cast <bool> (isa<PointerType>(Adjusted)) ? void (0) : __assert_fail ("isa<PointerType>(Adjusted)" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/clang/include/clang/AST/Type.h" , 7247, __extension__ __PRETTY_FUNCTION__)); | ||||||||
7248 | #endif | ||||||||
7249 | } | ||||||||
7250 | |||||||||
7251 | QualType DecayedType::getPointeeType() const { | ||||||||
7252 | QualType Decayed = getDecayedType(); | ||||||||
7253 | (void)AttributedType::stripOuterNullability(Decayed); | ||||||||
7254 | return cast<PointerType>(Decayed)->getPointeeType(); | ||||||||
7255 | } | ||||||||
7256 | |||||||||
7257 | // Get the decimal string representation of a fixed point type, represented | ||||||||
7258 | // as a scaled integer. | ||||||||
7259 | // TODO: At some point, we should change the arguments to instead just accept an | ||||||||
7260 | // APFixedPoint instead of APSInt and scale. | ||||||||
7261 | void FixedPointValueToString(SmallVectorImpl<char> &Str, llvm::APSInt Val, | ||||||||
7262 | unsigned Scale); | ||||||||
7263 | |||||||||
7264 | } // namespace clang | ||||||||
7265 | |||||||||
7266 | #endif // LLVM_CLANG_AST_TYPE_H |
1 | //===- llvm/ADT/PointerIntPair.h - Pair for pointer and int -----*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file defines the PointerIntPair class. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_ADT_POINTERINTPAIR_H |
14 | #define LLVM_ADT_POINTERINTPAIR_H |
15 | |
16 | #include "llvm/Support/Compiler.h" |
17 | #include "llvm/Support/PointerLikeTypeTraits.h" |
18 | #include "llvm/Support/type_traits.h" |
19 | #include <cassert> |
20 | #include <cstdint> |
21 | #include <limits> |
22 | |
23 | namespace llvm { |
24 | |
25 | template <typename T> struct DenseMapInfo; |
26 | template <typename PointerT, unsigned IntBits, typename PtrTraits> |
27 | struct PointerIntPairInfo; |
28 | |
29 | /// PointerIntPair - This class implements a pair of a pointer and small |
30 | /// integer. It is designed to represent this in the space required by one |
31 | /// pointer by bitmangling the integer into the low part of the pointer. This |
32 | /// can only be done for small integers: typically up to 3 bits, but it depends |
33 | /// on the number of bits available according to PointerLikeTypeTraits for the |
34 | /// type. |
35 | /// |
36 | /// Note that PointerIntPair always puts the IntVal part in the highest bits |
37 | /// possible. For example, PointerIntPair<void*, 1, bool> will put the bit for |
38 | /// the bool into bit #2, not bit #0, which allows the low two bits to be used |
39 | /// for something else. For example, this allows: |
40 | /// PointerIntPair<PointerIntPair<void*, 1, bool>, 1, bool> |
41 | /// ... and the two bools will land in different bits. |
42 | template <typename PointerTy, unsigned IntBits, typename IntType = unsigned, |
43 | typename PtrTraits = PointerLikeTypeTraits<PointerTy>, |
44 | typename Info = PointerIntPairInfo<PointerTy, IntBits, PtrTraits>> |
45 | class PointerIntPair { |
46 | // Used by MSVC visualizer and generally helpful for debugging/visualizing. |
47 | using InfoTy = Info; |
48 | intptr_t Value = 0; |
49 | |
50 | public: |
51 | constexpr PointerIntPair() = default; |
52 | |
53 | PointerIntPair(PointerTy PtrVal, IntType IntVal) { |
54 | setPointerAndInt(PtrVal, IntVal); |
55 | } |
56 | |
57 | explicit PointerIntPair(PointerTy PtrVal) { initWithPointer(PtrVal); } |
58 | |
59 | PointerTy getPointer() const { return Info::getPointer(Value); } |
60 | |
61 | IntType getInt() const { return (IntType)Info::getInt(Value); } |
62 | |
63 | void setPointer(PointerTy PtrVal) LLVM_LVALUE_FUNCTION& { |
64 | Value = Info::updatePointer(Value, PtrVal); |
65 | } |
66 | |
67 | void setInt(IntType IntVal) LLVM_LVALUE_FUNCTION& { |
68 | Value = Info::updateInt(Value, static_cast<intptr_t>(IntVal)); |
69 | } |
70 | |
71 | void initWithPointer(PointerTy PtrVal) LLVM_LVALUE_FUNCTION& { |
72 | Value = Info::updatePointer(0, PtrVal); |
73 | } |
74 | |
75 | void setPointerAndInt(PointerTy PtrVal, IntType IntVal) LLVM_LVALUE_FUNCTION& { |
76 | Value = Info::updateInt(Info::updatePointer(0, PtrVal), |
77 | static_cast<intptr_t>(IntVal)); |
78 | } |
79 | |
80 | PointerTy const *getAddrOfPointer() const { |
81 | return const_cast<PointerIntPair *>(this)->getAddrOfPointer(); |
82 | } |
83 | |
84 | PointerTy *getAddrOfPointer() { |
85 | assert(Value == reinterpret_cast<intptr_t>(getPointer()) &&(static_cast <bool> (Value == reinterpret_cast<intptr_t >(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __extension__ __PRETTY_FUNCTION__)) |
86 | "Can only return the address if IntBits is cleared and "(static_cast <bool> (Value == reinterpret_cast<intptr_t >(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __extension__ __PRETTY_FUNCTION__)) |
87 | "PtrTraits doesn't change the pointer")(static_cast <bool> (Value == reinterpret_cast<intptr_t >(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __extension__ __PRETTY_FUNCTION__)); |
88 | return reinterpret_cast<PointerTy *>(&Value); |
89 | } |
90 | |
91 | void *getOpaqueValue() const { return reinterpret_cast<void *>(Value); } |
92 | |
93 | void setFromOpaqueValue(void *Val) LLVM_LVALUE_FUNCTION& { |
94 | Value = reinterpret_cast<intptr_t>(Val); |
95 | } |
96 | |
97 | static PointerIntPair getFromOpaqueValue(void *V) { |
98 | PointerIntPair P; |
99 | P.setFromOpaqueValue(V); |
100 | return P; |
101 | } |
102 | |
103 | // Allow PointerIntPairs to be created from const void * if and only if the |
104 | // pointer type could be created from a const void *. |
105 | static PointerIntPair getFromOpaqueValue(const void *V) { |
106 | (void)PtrTraits::getFromVoidPointer(V); |
107 | return getFromOpaqueValue(const_cast<void *>(V)); |
108 | } |
109 | |
110 | bool operator==(const PointerIntPair &RHS) const { |
111 | return Value == RHS.Value; |
112 | } |
113 | |
114 | bool operator!=(const PointerIntPair &RHS) const { |
115 | return Value != RHS.Value; |
116 | } |
117 | |
118 | bool operator<(const PointerIntPair &RHS) const { return Value < RHS.Value; } |
119 | bool operator>(const PointerIntPair &RHS) const { return Value > RHS.Value; } |
120 | |
121 | bool operator<=(const PointerIntPair &RHS) const { |
122 | return Value <= RHS.Value; |
123 | } |
124 | |
125 | bool operator>=(const PointerIntPair &RHS) const { |
126 | return Value >= RHS.Value; |
127 | } |
128 | }; |
129 | |
130 | // Specialize is_trivially_copyable to avoid limitation of llvm::is_trivially_copyable |
131 | // when compiled with gcc 4.9. |
132 | template <typename PointerTy, unsigned IntBits, typename IntType, |
133 | typename PtrTraits, |
134 | typename Info> |
135 | struct is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>> : std::true_type { |
136 | #ifdef HAVE_STD_IS_TRIVIALLY_COPYABLE |
137 | static_assert(std::is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>>::value, |
138 | "inconsistent behavior between llvm:: and std:: implementation of is_trivially_copyable"); |
139 | #endif |
140 | }; |
141 | |
142 | |
143 | template <typename PointerT, unsigned IntBits, typename PtrTraits> |
144 | struct PointerIntPairInfo { |
145 | static_assert(PtrTraits::NumLowBitsAvailable < |
146 | std::numeric_limits<uintptr_t>::digits, |
147 | "cannot use a pointer type that has all bits free"); |
148 | static_assert(IntBits <= PtrTraits::NumLowBitsAvailable, |
149 | "PointerIntPair with integer size too large for pointer"); |
150 | enum MaskAndShiftConstants : uintptr_t { |
151 | /// PointerBitMask - The bits that come from the pointer. |
152 | PointerBitMask = |
153 | ~(uintptr_t)(((intptr_t)1 << PtrTraits::NumLowBitsAvailable) - 1), |
154 | |
155 | /// IntShift - The number of low bits that we reserve for other uses, and |
156 | /// keep zero. |
157 | IntShift = (uintptr_t)PtrTraits::NumLowBitsAvailable - IntBits, |
158 | |
159 | /// IntMask - This is the unshifted mask for valid bits of the int type. |
160 | IntMask = (uintptr_t)(((intptr_t)1 << IntBits) - 1), |
161 | |
162 | // ShiftedIntMask - This is the bits for the integer shifted in place. |
163 | ShiftedIntMask = (uintptr_t)(IntMask << IntShift) |
164 | }; |
165 | |
166 | static PointerT getPointer(intptr_t Value) { |
167 | return PtrTraits::getFromVoidPointer( |
168 | reinterpret_cast<void *>(Value & PointerBitMask)); |
169 | } |
170 | |
171 | static intptr_t getInt(intptr_t Value) { |
172 | return (Value >> IntShift) & IntMask; |
173 | } |
174 | |
175 | static intptr_t updatePointer(intptr_t OrigValue, PointerT Ptr) { |
176 | intptr_t PtrWord = |
177 | reinterpret_cast<intptr_t>(PtrTraits::getAsVoidPointer(Ptr)); |
178 | assert((PtrWord & ~PointerBitMask) == 0 &&(static_cast <bool> ((PtrWord & ~PointerBitMask) == 0 && "Pointer is not sufficiently aligned") ? void ( 0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/ADT/PointerIntPair.h" , 179, __extension__ __PRETTY_FUNCTION__)) |
179 | "Pointer is not sufficiently aligned")(static_cast <bool> ((PtrWord & ~PointerBitMask) == 0 && "Pointer is not sufficiently aligned") ? void ( 0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/ADT/PointerIntPair.h" , 179, __extension__ __PRETTY_FUNCTION__)); |
180 | // Preserve all low bits, just update the pointer. |
181 | return PtrWord | (OrigValue & ~PointerBitMask); |
182 | } |
183 | |
184 | static intptr_t updateInt(intptr_t OrigValue, intptr_t Int) { |
185 | intptr_t IntWord = static_cast<intptr_t>(Int); |
186 | assert((IntWord & ~IntMask) == 0 && "Integer too large for field")(static_cast <bool> ((IntWord & ~IntMask) == 0 && "Integer too large for field") ? void (0) : __assert_fail ("(IntWord & ~IntMask) == 0 && \"Integer too large for field\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/ADT/PointerIntPair.h" , 186, __extension__ __PRETTY_FUNCTION__)); |
187 | |
188 | // Preserve all bits other than the ones we are updating. |
189 | return (OrigValue & ~ShiftedIntMask) | IntWord << IntShift; |
190 | } |
191 | }; |
192 | |
193 | // Provide specialization of DenseMapInfo for PointerIntPair. |
194 | template <typename PointerTy, unsigned IntBits, typename IntType> |
195 | struct DenseMapInfo<PointerIntPair<PointerTy, IntBits, IntType>> { |
196 | using Ty = PointerIntPair<PointerTy, IntBits, IntType>; |
197 | |
198 | static Ty getEmptyKey() { |
199 | uintptr_t Val = static_cast<uintptr_t>(-1); |
200 | Val <<= PointerLikeTypeTraits<Ty>::NumLowBitsAvailable; |
201 | return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val)); |
202 | } |
203 | |
204 | static Ty getTombstoneKey() { |
205 | uintptr_t Val = static_cast<uintptr_t>(-2); |
206 | Val <<= PointerLikeTypeTraits<PointerTy>::NumLowBitsAvailable; |
207 | return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val)); |
208 | } |
209 | |
210 | static unsigned getHashValue(Ty V) { |
211 | uintptr_t IV = reinterpret_cast<uintptr_t>(V.getOpaqueValue()); |
212 | return unsigned(IV) ^ unsigned(IV >> 9); |
213 | } |
214 | |
215 | static bool isEqual(const Ty &LHS, const Ty &RHS) { return LHS == RHS; } |
216 | }; |
217 | |
218 | // Teach SmallPtrSet that PointerIntPair is "basically a pointer". |
219 | template <typename PointerTy, unsigned IntBits, typename IntType, |
220 | typename PtrTraits> |
221 | struct PointerLikeTypeTraits< |
222 | PointerIntPair<PointerTy, IntBits, IntType, PtrTraits>> { |
223 | static inline void * |
224 | getAsVoidPointer(const PointerIntPair<PointerTy, IntBits, IntType> &P) { |
225 | return P.getOpaqueValue(); |
226 | } |
227 | |
228 | static inline PointerIntPair<PointerTy, IntBits, IntType> |
229 | getFromVoidPointer(void *P) { |
230 | return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P); |
231 | } |
232 | |
233 | static inline PointerIntPair<PointerTy, IntBits, IntType> |
234 | getFromVoidPointer(const void *P) { |
235 | return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P); |
236 | } |
237 | |
238 | static constexpr int NumLowBitsAvailable = |
239 | PtrTraits::NumLowBitsAvailable - IntBits; |
240 | }; |
241 | |
242 | } // end namespace llvm |
243 | |
244 | #endif // LLVM_ADT_POINTERINTPAIR_H |
1 | //===- llvm/Support/Casting.h - Allow flexible, checked, casts --*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file defines the isa<X>(), cast<X>(), dyn_cast<X>(), cast_or_null<X>(), |
10 | // and dyn_cast_or_null<X>() templates. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_SUPPORT_CASTING_H |
15 | #define LLVM_SUPPORT_CASTING_H |
16 | |
17 | #include "llvm/Support/Compiler.h" |
18 | #include "llvm/Support/type_traits.h" |
19 | #include <cassert> |
20 | #include <memory> |
21 | #include <type_traits> |
22 | |
23 | namespace llvm { |
24 | |
25 | //===----------------------------------------------------------------------===// |
26 | // isa<x> Support Templates |
27 | //===----------------------------------------------------------------------===// |
28 | |
29 | // Define a template that can be specialized by smart pointers to reflect the |
30 | // fact that they are automatically dereferenced, and are not involved with the |
31 | // template selection process... the default implementation is a noop. |
32 | // |
33 | template<typename From> struct simplify_type { |
34 | using SimpleType = From; // The real type this represents... |
35 | |
36 | // An accessor to get the real value... |
37 | static SimpleType &getSimplifiedValue(From &Val) { return Val; } |
38 | }; |
39 | |
40 | template<typename From> struct simplify_type<const From> { |
41 | using NonConstSimpleType = typename simplify_type<From>::SimpleType; |
42 | using SimpleType = |
43 | typename add_const_past_pointer<NonConstSimpleType>::type; |
44 | using RetType = |
45 | typename add_lvalue_reference_if_not_pointer<SimpleType>::type; |
46 | |
47 | static RetType getSimplifiedValue(const From& Val) { |
48 | return simplify_type<From>::getSimplifiedValue(const_cast<From&>(Val)); |
49 | } |
50 | }; |
51 | |
52 | // The core of the implementation of isa<X> is here; To and From should be |
53 | // the names of classes. This template can be specialized to customize the |
54 | // implementation of isa<> without rewriting it from scratch. |
55 | template <typename To, typename From, typename Enabler = void> |
56 | struct isa_impl { |
57 | static inline bool doit(const From &Val) { |
58 | return To::classof(&Val); |
59 | } |
60 | }; |
61 | |
62 | /// Always allow upcasts, and perform no dynamic check for them. |
63 | template <typename To, typename From> |
64 | struct isa_impl<To, From, std::enable_if_t<std::is_base_of<To, From>::value>> { |
65 | static inline bool doit(const From &) { return true; } |
66 | }; |
67 | |
68 | template <typename To, typename From> struct isa_impl_cl { |
69 | static inline bool doit(const From &Val) { |
70 | return isa_impl<To, From>::doit(Val); |
71 | } |
72 | }; |
73 | |
74 | template <typename To, typename From> struct isa_impl_cl<To, const From> { |
75 | static inline bool doit(const From &Val) { |
76 | return isa_impl<To, From>::doit(Val); |
77 | } |
78 | }; |
79 | |
80 | template <typename To, typename From> |
81 | struct isa_impl_cl<To, const std::unique_ptr<From>> { |
82 | static inline bool doit(const std::unique_ptr<From> &Val) { |
83 | assert(Val && "isa<> used on a null pointer")(static_cast <bool> (Val && "isa<> used on a null pointer" ) ? void (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 83, __extension__ __PRETTY_FUNCTION__)); |
84 | return isa_impl_cl<To, From>::doit(*Val); |
85 | } |
86 | }; |
87 | |
88 | template <typename To, typename From> struct isa_impl_cl<To, From*> { |
89 | static inline bool doit(const From *Val) { |
90 | assert(Val && "isa<> used on a null pointer")(static_cast <bool> (Val && "isa<> used on a null pointer" ) ? void (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 90, __extension__ __PRETTY_FUNCTION__)); |
91 | return isa_impl<To, From>::doit(*Val); |
92 | } |
93 | }; |
94 | |
95 | template <typename To, typename From> struct isa_impl_cl<To, From*const> { |
96 | static inline bool doit(const From *Val) { |
97 | assert(Val && "isa<> used on a null pointer")(static_cast <bool> (Val && "isa<> used on a null pointer" ) ? void (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 97, __extension__ __PRETTY_FUNCTION__)); |
98 | return isa_impl<To, From>::doit(*Val); |
99 | } |
100 | }; |
101 | |
102 | template <typename To, typename From> struct isa_impl_cl<To, const From*> { |
103 | static inline bool doit(const From *Val) { |
104 | assert(Val && "isa<> used on a null pointer")(static_cast <bool> (Val && "isa<> used on a null pointer" ) ? void (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 104, __extension__ __PRETTY_FUNCTION__)); |
105 | return isa_impl<To, From>::doit(*Val); |
106 | } |
107 | }; |
108 | |
109 | template <typename To, typename From> struct isa_impl_cl<To, const From*const> { |
110 | static inline bool doit(const From *Val) { |
111 | assert(Val && "isa<> used on a null pointer")(static_cast <bool> (Val && "isa<> used on a null pointer" ) ? void (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 111, __extension__ __PRETTY_FUNCTION__)); |
112 | return isa_impl<To, From>::doit(*Val); |
113 | } |
114 | }; |
115 | |
116 | template<typename To, typename From, typename SimpleFrom> |
117 | struct isa_impl_wrap { |
118 | // When From != SimplifiedType, we can simplify the type some more by using |
119 | // the simplify_type template. |
120 | static bool doit(const From &Val) { |
121 | return isa_impl_wrap<To, SimpleFrom, |
122 | typename simplify_type<SimpleFrom>::SimpleType>::doit( |
123 | simplify_type<const From>::getSimplifiedValue(Val)); |
124 | } |
125 | }; |
126 | |
127 | template<typename To, typename FromTy> |
128 | struct isa_impl_wrap<To, FromTy, FromTy> { |
129 | // When From == SimpleType, we are as simple as we are going to get. |
130 | static bool doit(const FromTy &Val) { |
131 | return isa_impl_cl<To,FromTy>::doit(Val); |
132 | } |
133 | }; |
134 | |
135 | // isa<X> - Return true if the parameter to the template is an instance of one |
136 | // of the template type arguments. Used like this: |
137 | // |
138 | // if (isa<Type>(myVal)) { ... } |
139 | // if (isa<Type0, Type1, Type2>(myVal)) { ... } |
140 | // |
141 | template <class X, class Y> LLVM_NODISCARD[[clang::warn_unused_result]] inline bool isa(const Y &Val) { |
142 | return isa_impl_wrap<X, const Y, |
143 | typename simplify_type<const Y>::SimpleType>::doit(Val); |
144 | } |
145 | |
146 | template <typename First, typename Second, typename... Rest, typename Y> |
147 | LLVM_NODISCARD[[clang::warn_unused_result]] inline bool isa(const Y &Val) { |
148 | return isa<First>(Val) || isa<Second, Rest...>(Val); |
149 | } |
150 | |
151 | // isa_and_nonnull<X> - Functionally identical to isa, except that a null value |
152 | // is accepted. |
153 | // |
154 | template <typename... X, class Y> |
155 | LLVM_NODISCARD[[clang::warn_unused_result]] inline bool isa_and_nonnull(const Y &Val) { |
156 | if (!Val) |
157 | return false; |
158 | return isa<X...>(Val); |
159 | } |
160 | |
161 | //===----------------------------------------------------------------------===// |
162 | // cast<x> Support Templates |
163 | //===----------------------------------------------------------------------===// |
164 | |
165 | template<class To, class From> struct cast_retty; |
166 | |
167 | // Calculate what type the 'cast' function should return, based on a requested |
168 | // type of To and a source type of From. |
169 | template<class To, class From> struct cast_retty_impl { |
170 | using ret_type = To &; // Normal case, return Ty& |
171 | }; |
172 | template<class To, class From> struct cast_retty_impl<To, const From> { |
173 | using ret_type = const To &; // Normal case, return Ty& |
174 | }; |
175 | |
176 | template<class To, class From> struct cast_retty_impl<To, From*> { |
177 | using ret_type = To *; // Pointer arg case, return Ty* |
178 | }; |
179 | |
180 | template<class To, class From> struct cast_retty_impl<To, const From*> { |
181 | using ret_type = const To *; // Constant pointer arg case, return const Ty* |
182 | }; |
183 | |
184 | template<class To, class From> struct cast_retty_impl<To, const From*const> { |
185 | using ret_type = const To *; // Constant pointer arg case, return const Ty* |
186 | }; |
187 | |
188 | template <class To, class From> |
189 | struct cast_retty_impl<To, std::unique_ptr<From>> { |
190 | private: |
191 | using PointerType = typename cast_retty_impl<To, From *>::ret_type; |
192 | using ResultType = std::remove_pointer_t<PointerType>; |
193 | |
194 | public: |
195 | using ret_type = std::unique_ptr<ResultType>; |
196 | }; |
197 | |
198 | template<class To, class From, class SimpleFrom> |
199 | struct cast_retty_wrap { |
200 | // When the simplified type and the from type are not the same, use the type |
201 | // simplifier to reduce the type, then reuse cast_retty_impl to get the |
202 | // resultant type. |
203 | using ret_type = typename cast_retty<To, SimpleFrom>::ret_type; |
204 | }; |
205 | |
206 | template<class To, class FromTy> |
207 | struct cast_retty_wrap<To, FromTy, FromTy> { |
208 | // When the simplified type is equal to the from type, use it directly. |
209 | using ret_type = typename cast_retty_impl<To,FromTy>::ret_type; |
210 | }; |
211 | |
212 | template<class To, class From> |
213 | struct cast_retty { |
214 | using ret_type = typename cast_retty_wrap< |
215 | To, From, typename simplify_type<From>::SimpleType>::ret_type; |
216 | }; |
217 | |
218 | // Ensure the non-simple values are converted using the simplify_type template |
219 | // that may be specialized by smart pointers... |
220 | // |
221 | template<class To, class From, class SimpleFrom> struct cast_convert_val { |
222 | // This is not a simple type, use the template to simplify it... |
223 | static typename cast_retty<To, From>::ret_type doit(From &Val) { |
224 | return cast_convert_val<To, SimpleFrom, |
225 | typename simplify_type<SimpleFrom>::SimpleType>::doit( |
226 | simplify_type<From>::getSimplifiedValue(Val)); |
227 | } |
228 | }; |
229 | |
230 | template<class To, class FromTy> struct cast_convert_val<To,FromTy,FromTy> { |
231 | // This _is_ a simple type, just cast it. |
232 | static typename cast_retty<To, FromTy>::ret_type doit(const FromTy &Val) { |
233 | typename cast_retty<To, FromTy>::ret_type Res2 |
234 | = (typename cast_retty<To, FromTy>::ret_type)const_cast<FromTy&>(Val); |
235 | return Res2; |
236 | } |
237 | }; |
238 | |
239 | template <class X> struct is_simple_type { |
240 | static const bool value = |
241 | std::is_same<X, typename simplify_type<X>::SimpleType>::value; |
242 | }; |
243 | |
244 | // cast<X> - Return the argument parameter cast to the specified type. This |
245 | // casting operator asserts that the type is correct, so it does not return null |
246 | // on failure. It does not allow a null argument (use cast_or_null for that). |
247 | // It is typically used like this: |
248 | // |
249 | // cast<Instruction>(myVal)->getParent() |
250 | // |
251 | template <class X, class Y> |
252 | inline std::enable_if_t<!is_simple_type<Y>::value, |
253 | typename cast_retty<X, const Y>::ret_type> |
254 | cast(const Y &Val) { |
255 | assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? void (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 255, __extension__ __PRETTY_FUNCTION__)); |
256 | return cast_convert_val< |
257 | X, const Y, typename simplify_type<const Y>::SimpleType>::doit(Val); |
258 | } |
259 | |
260 | template <class X, class Y> |
261 | inline typename cast_retty<X, Y>::ret_type cast(Y &Val) { |
262 | assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? void (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 262, __extension__ __PRETTY_FUNCTION__)); |
263 | return cast_convert_val<X, Y, |
264 | typename simplify_type<Y>::SimpleType>::doit(Val); |
265 | } |
266 | |
267 | template <class X, class Y> |
268 | inline typename cast_retty<X, Y *>::ret_type cast(Y *Val) { |
269 | assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? void (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 269, __extension__ __PRETTY_FUNCTION__)); |
270 | return cast_convert_val<X, Y*, |
271 | typename simplify_type<Y*>::SimpleType>::doit(Val); |
272 | } |
273 | |
274 | template <class X, class Y> |
275 | inline typename cast_retty<X, std::unique_ptr<Y>>::ret_type |
276 | cast(std::unique_ptr<Y> &&Val) { |
277 | assert(isa<X>(Val.get()) && "cast<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val.get()) && "cast<Ty>() argument of incompatible type!") ? void (0 ) : __assert_fail ("isa<X>(Val.get()) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 277, __extension__ __PRETTY_FUNCTION__)); |
278 | using ret_type = typename cast_retty<X, std::unique_ptr<Y>>::ret_type; |
279 | return ret_type( |
280 | cast_convert_val<X, Y *, typename simplify_type<Y *>::SimpleType>::doit( |
281 | Val.release())); |
282 | } |
283 | |
284 | // cast_or_null<X> - Functionally identical to cast, except that a null value is |
285 | // accepted. |
286 | // |
287 | template <class X, class Y> |
288 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t< |
289 | !is_simple_type<Y>::value, typename cast_retty<X, const Y>::ret_type> |
290 | cast_or_null(const Y &Val) { |
291 | if (!Val) |
292 | return nullptr; |
293 | assert(isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? void (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 293, __extension__ __PRETTY_FUNCTION__)); |
294 | return cast<X>(Val); |
295 | } |
296 | |
297 | template <class X, class Y> |
298 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t<!is_simple_type<Y>::value, |
299 | typename cast_retty<X, Y>::ret_type> |
300 | cast_or_null(Y &Val) { |
301 | if (!Val) |
302 | return nullptr; |
303 | assert(isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? void (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 303, __extension__ __PRETTY_FUNCTION__)); |
304 | return cast<X>(Val); |
305 | } |
306 | |
307 | template <class X, class Y> |
308 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y *>::ret_type |
309 | cast_or_null(Y *Val) { |
310 | if (!Val) return nullptr; |
311 | assert(isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!")(static_cast <bool> (isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? void (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include/llvm/Support/Casting.h" , 311, __extension__ __PRETTY_FUNCTION__)); |
312 | return cast<X>(Val); |
313 | } |
314 | |
315 | template <class X, class Y> |
316 | inline typename cast_retty<X, std::unique_ptr<Y>>::ret_type |
317 | cast_or_null(std::unique_ptr<Y> &&Val) { |
318 | if (!Val) |
319 | return nullptr; |
320 | return cast<X>(std::move(Val)); |
321 | } |
322 | |
323 | // dyn_cast<X> - Return the argument parameter cast to the specified type. This |
324 | // casting operator returns null if the argument is of the wrong type, so it can |
325 | // be used to test for a type as well as cast if successful. This should be |
326 | // used in the context of an if statement like this: |
327 | // |
328 | // if (const Instruction *I = dyn_cast<Instruction>(myVal)) { ... } |
329 | // |
330 | |
331 | template <class X, class Y> |
332 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t< |
333 | !is_simple_type<Y>::value, typename cast_retty<X, const Y>::ret_type> |
334 | dyn_cast(const Y &Val) { |
335 | return isa<X>(Val) ? cast<X>(Val) : nullptr; |
336 | } |
337 | |
338 | template <class X, class Y> |
339 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y>::ret_type dyn_cast(Y &Val) { |
340 | return isa<X>(Val) ? cast<X>(Val) : nullptr; |
341 | } |
342 | |
343 | template <class X, class Y> |
344 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y *>::ret_type dyn_cast(Y *Val) { |
345 | return isa<X>(Val) ? cast<X>(Val) : nullptr; |
346 | } |
347 | |
348 | // dyn_cast_or_null<X> - Functionally identical to dyn_cast, except that a null |
349 | // value is accepted. |
350 | // |
351 | template <class X, class Y> |
352 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t< |
353 | !is_simple_type<Y>::value, typename cast_retty<X, const Y>::ret_type> |
354 | dyn_cast_or_null(const Y &Val) { |
355 | return (Val && isa<X>(Val)) ? cast<X>(Val) : nullptr; |
356 | } |
357 | |
358 | template <class X, class Y> |
359 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t<!is_simple_type<Y>::value, |
360 | typename cast_retty<X, Y>::ret_type> |
361 | dyn_cast_or_null(Y &Val) { |
362 | return (Val && isa<X>(Val)) ? cast<X>(Val) : nullptr; |
363 | } |
364 | |
365 | template <class X, class Y> |
366 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y *>::ret_type |
367 | dyn_cast_or_null(Y *Val) { |
368 | return (Val && isa<X>(Val)) ? cast<X>(Val) : nullptr; |
369 | } |
370 | |
371 | // unique_dyn_cast<X> - Given a unique_ptr<Y>, try to return a unique_ptr<X>, |
372 | // taking ownership of the input pointer iff isa<X>(Val) is true. If the |
373 | // cast is successful, From refers to nullptr on exit and the casted value |
374 | // is returned. If the cast is unsuccessful, the function returns nullptr |
375 | // and From is unchanged. |
376 | template <class X, class Y> |
377 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast(std::unique_ptr<Y> &Val) |
378 | -> decltype(cast<X>(Val)) { |
379 | if (!isa<X>(Val)) |
380 | return nullptr; |
381 | return cast<X>(std::move(Val)); |
382 | } |
383 | |
384 | template <class X, class Y> |
385 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast(std::unique_ptr<Y> &&Val) { |
386 | return unique_dyn_cast<X, Y>(Val); |
387 | } |
388 | |
389 | // dyn_cast_or_null<X> - Functionally identical to unique_dyn_cast, except that |
390 | // a null value is accepted. |
391 | template <class X, class Y> |
392 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast_or_null(std::unique_ptr<Y> &Val) |
393 | -> decltype(cast<X>(Val)) { |
394 | if (!Val) |
395 | return nullptr; |
396 | return unique_dyn_cast<X, Y>(Val); |
397 | } |
398 | |
399 | template <class X, class Y> |
400 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast_or_null(std::unique_ptr<Y> &&Val) { |
401 | return unique_dyn_cast_or_null<X, Y>(Val); |
402 | } |
403 | |
404 | } // end namespace llvm |
405 | |
406 | #endif // LLVM_SUPPORT_CASTING_H |