| File: | clang/lib/Sema/SemaExpr.cpp |
| Warning: | line 9077, 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/RecursiveASTVisitor.h" | ||||||||
| 28 | #include "clang/AST/TypeLoc.h" | ||||||||
| 29 | #include "clang/Basic/Builtins.h" | ||||||||
| 30 | #include "clang/Basic/FixedPoint.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/Support/ConvertUTF.h" | ||||||||
| 50 | #include "llvm/Support/SaveAndRestore.h" | ||||||||
| 51 | using namespace clang; | ||||||||
| 52 | using namespace sema; | ||||||||
| 53 | using llvm::RoundingMode; | ||||||||
| 54 | |||||||||
| 55 | /// Determine whether the use of this declaration is valid, without | ||||||||
| 56 | /// emitting diagnostics. | ||||||||
| 57 | bool Sema::CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid) { | ||||||||
| 58 | // See if this is an auto-typed variable whose initializer we are parsing. | ||||||||
| 59 | if (ParsingInitForAutoVars.count(D)) | ||||||||
| 60 | return false; | ||||||||
| 61 | |||||||||
| 62 | // See if this is a deleted function. | ||||||||
| 63 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
| 64 | if (FD->isDeleted()) | ||||||||
| 65 | return false; | ||||||||
| 66 | |||||||||
| 67 | // If the function has a deduced return type, and we can't deduce it, | ||||||||
| 68 | // then we can't use it either. | ||||||||
| 69 | if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && | ||||||||
| 70 | DeduceReturnType(FD, SourceLocation(), /*Diagnose*/ false)) | ||||||||
| 71 | return false; | ||||||||
| 72 | |||||||||
| 73 | // See if this is an aligned allocation/deallocation function that is | ||||||||
| 74 | // unavailable. | ||||||||
| 75 | if (TreatUnavailableAsInvalid && | ||||||||
| 76 | isUnavailableAlignedAllocationFunction(*FD)) | ||||||||
| 77 | return false; | ||||||||
| 78 | } | ||||||||
| 79 | |||||||||
| 80 | // See if this function is unavailable. | ||||||||
| 81 | if (TreatUnavailableAsInvalid && D->getAvailability() == AR_Unavailable && | ||||||||
| 82 | cast<Decl>(CurContext)->getAvailability() != AR_Unavailable) | ||||||||
| 83 | return false; | ||||||||
| 84 | |||||||||
| 85 | return true; | ||||||||
| 86 | } | ||||||||
| 87 | |||||||||
| 88 | static void DiagnoseUnusedOfDecl(Sema &S, NamedDecl *D, SourceLocation Loc) { | ||||||||
| 89 | // Warn if this is used but marked unused. | ||||||||
| 90 | if (const auto *A = D->getAttr<UnusedAttr>()) { | ||||||||
| 91 | // [[maybe_unused]] should not diagnose uses, but __attribute__((unused)) | ||||||||
| 92 | // should diagnose them. | ||||||||
| 93 | if (A->getSemanticSpelling() != UnusedAttr::CXX11_maybe_unused && | ||||||||
| 94 | A->getSemanticSpelling() != UnusedAttr::C2x_maybe_unused) { | ||||||||
| 95 | const Decl *DC = cast_or_null<Decl>(S.getCurObjCLexicalContext()); | ||||||||
| 96 | if (DC && !DC->hasAttr<UnusedAttr>()) | ||||||||
| 97 | S.Diag(Loc, diag::warn_used_but_marked_unused) << D; | ||||||||
| 98 | } | ||||||||
| 99 | } | ||||||||
| 100 | } | ||||||||
| 101 | |||||||||
| 102 | /// Emit a note explaining that this function is deleted. | ||||||||
| 103 | void Sema::NoteDeletedFunction(FunctionDecl *Decl) { | ||||||||
| 104 | assert(Decl && Decl->isDeleted())((Decl && Decl->isDeleted()) ? static_cast<void > (0) : __assert_fail ("Decl && Decl->isDeleted()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 104, __PRETTY_FUNCTION__)); | ||||||||
| 105 | |||||||||
| 106 | if (Decl->isDefaulted()) { | ||||||||
| 107 | // If the method was explicitly defaulted, point at that declaration. | ||||||||
| 108 | if (!Decl->isImplicit()) | ||||||||
| 109 | Diag(Decl->getLocation(), diag::note_implicitly_deleted); | ||||||||
| 110 | |||||||||
| 111 | // Try to diagnose why this special member function was implicitly | ||||||||
| 112 | // deleted. This might fail, if that reason no longer applies. | ||||||||
| 113 | DiagnoseDeletedDefaultedFunction(Decl); | ||||||||
| 114 | return; | ||||||||
| 115 | } | ||||||||
| 116 | |||||||||
| 117 | auto *Ctor = dyn_cast<CXXConstructorDecl>(Decl); | ||||||||
| 118 | if (Ctor && Ctor->isInheritingConstructor()) | ||||||||
| 119 | return NoteDeletedInheritingConstructor(Ctor); | ||||||||
| 120 | |||||||||
| 121 | Diag(Decl->getLocation(), diag::note_availability_specified_here) | ||||||||
| 122 | << Decl << 1; | ||||||||
| 123 | } | ||||||||
| 124 | |||||||||
| 125 | /// Determine whether a FunctionDecl was ever declared with an | ||||||||
| 126 | /// explicit storage class. | ||||||||
| 127 | static bool hasAnyExplicitStorageClass(const FunctionDecl *D) { | ||||||||
| 128 | for (auto I : D->redecls()) { | ||||||||
| 129 | if (I->getStorageClass() != SC_None) | ||||||||
| 130 | return true; | ||||||||
| 131 | } | ||||||||
| 132 | return false; | ||||||||
| 133 | } | ||||||||
| 134 | |||||||||
| 135 | /// Check whether we're in an extern inline function and referring to a | ||||||||
| 136 | /// variable or function with internal linkage (C11 6.7.4p3). | ||||||||
| 137 | /// | ||||||||
| 138 | /// This is only a warning because we used to silently accept this code, but | ||||||||
| 139 | /// in many cases it will not behave correctly. This is not enabled in C++ mode | ||||||||
| 140 | /// because the restriction language is a bit weaker (C++11 [basic.def.odr]p6) | ||||||||
| 141 | /// and so while there may still be user mistakes, most of the time we can't | ||||||||
| 142 | /// prove that there are errors. | ||||||||
| 143 | static void diagnoseUseOfInternalDeclInInlineFunction(Sema &S, | ||||||||
| 144 | const NamedDecl *D, | ||||||||
| 145 | SourceLocation Loc) { | ||||||||
| 146 | // This is disabled under C++; there are too many ways for this to fire in | ||||||||
| 147 | // contexts where the warning is a false positive, or where it is technically | ||||||||
| 148 | // correct but benign. | ||||||||
| 149 | if (S.getLangOpts().CPlusPlus) | ||||||||
| 150 | return; | ||||||||
| 151 | |||||||||
| 152 | // Check if this is an inlined function or method. | ||||||||
| 153 | FunctionDecl *Current = S.getCurFunctionDecl(); | ||||||||
| 154 | if (!Current) | ||||||||
| 155 | return; | ||||||||
| 156 | if (!Current->isInlined()) | ||||||||
| 157 | return; | ||||||||
| 158 | if (!Current->isExternallyVisible()) | ||||||||
| 159 | return; | ||||||||
| 160 | |||||||||
| 161 | // Check if the decl has internal linkage. | ||||||||
| 162 | if (D->getFormalLinkage() != InternalLinkage) | ||||||||
| 163 | return; | ||||||||
| 164 | |||||||||
| 165 | // Downgrade from ExtWarn to Extension if | ||||||||
| 166 | // (1) the supposedly external inline function is in the main file, | ||||||||
| 167 | // and probably won't be included anywhere else. | ||||||||
| 168 | // (2) the thing we're referencing is a pure function. | ||||||||
| 169 | // (3) the thing we're referencing is another inline function. | ||||||||
| 170 | // This last can give us false negatives, but it's better than warning on | ||||||||
| 171 | // wrappers for simple C library functions. | ||||||||
| 172 | const FunctionDecl *UsedFn = dyn_cast<FunctionDecl>(D); | ||||||||
| 173 | bool DowngradeWarning = S.getSourceManager().isInMainFile(Loc); | ||||||||
| 174 | if (!DowngradeWarning && UsedFn) | ||||||||
| 175 | DowngradeWarning = UsedFn->isInlined() || UsedFn->hasAttr<ConstAttr>(); | ||||||||
| 176 | |||||||||
| 177 | S.Diag(Loc, DowngradeWarning ? diag::ext_internal_in_extern_inline_quiet | ||||||||
| 178 | : diag::ext_internal_in_extern_inline) | ||||||||
| 179 | << /*IsVar=*/!UsedFn << D; | ||||||||
| 180 | |||||||||
| 181 | S.MaybeSuggestAddingStaticToDecl(Current); | ||||||||
| 182 | |||||||||
| 183 | S.Diag(D->getCanonicalDecl()->getLocation(), diag::note_entity_declared_at) | ||||||||
| 184 | << D; | ||||||||
| 185 | } | ||||||||
| 186 | |||||||||
| 187 | void Sema::MaybeSuggestAddingStaticToDecl(const FunctionDecl *Cur) { | ||||||||
| 188 | const FunctionDecl *First = Cur->getFirstDecl(); | ||||||||
| 189 | |||||||||
| 190 | // Suggest "static" on the function, if possible. | ||||||||
| 191 | if (!hasAnyExplicitStorageClass(First)) { | ||||||||
| 192 | SourceLocation DeclBegin = First->getSourceRange().getBegin(); | ||||||||
| 193 | Diag(DeclBegin, diag::note_convert_inline_to_static) | ||||||||
| 194 | << Cur << FixItHint::CreateInsertion(DeclBegin, "static "); | ||||||||
| 195 | } | ||||||||
| 196 | } | ||||||||
| 197 | |||||||||
| 198 | /// Determine whether the use of this declaration is valid, and | ||||||||
| 199 | /// emit any corresponding diagnostics. | ||||||||
| 200 | /// | ||||||||
| 201 | /// This routine diagnoses various problems with referencing | ||||||||
| 202 | /// declarations that can occur when using a declaration. For example, | ||||||||
| 203 | /// it might warn if a deprecated or unavailable declaration is being | ||||||||
| 204 | /// used, or produce an error (and return true) if a C++0x deleted | ||||||||
| 205 | /// function is being used. | ||||||||
| 206 | /// | ||||||||
| 207 | /// \returns true if there was an error (this declaration cannot be | ||||||||
| 208 | /// referenced), false otherwise. | ||||||||
| 209 | /// | ||||||||
| 210 | bool Sema::DiagnoseUseOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, | ||||||||
| 211 | const ObjCInterfaceDecl *UnknownObjCClass, | ||||||||
| 212 | bool ObjCPropertyAccess, | ||||||||
| 213 | bool AvoidPartialAvailabilityChecks, | ||||||||
| 214 | ObjCInterfaceDecl *ClassReceiver) { | ||||||||
| 215 | SourceLocation Loc = Locs.front(); | ||||||||
| 216 | if (getLangOpts().CPlusPlus && isa<FunctionDecl>(D)) { | ||||||||
| 217 | // If there were any diagnostics suppressed by template argument deduction, | ||||||||
| 218 | // emit them now. | ||||||||
| 219 | auto Pos = SuppressedDiagnostics.find(D->getCanonicalDecl()); | ||||||||
| 220 | if (Pos != SuppressedDiagnostics.end()) { | ||||||||
| 221 | for (const PartialDiagnosticAt &Suppressed : Pos->second) | ||||||||
| 222 | Diag(Suppressed.first, Suppressed.second); | ||||||||
| 223 | |||||||||
| 224 | // Clear out the list of suppressed diagnostics, so that we don't emit | ||||||||
| 225 | // them again for this specialization. However, we don't obsolete this | ||||||||
| 226 | // entry from the table, because we want to avoid ever emitting these | ||||||||
| 227 | // diagnostics again. | ||||||||
| 228 | Pos->second.clear(); | ||||||||
| 229 | } | ||||||||
| 230 | |||||||||
| 231 | // C++ [basic.start.main]p3: | ||||||||
| 232 | // The function 'main' shall not be used within a program. | ||||||||
| 233 | if (cast<FunctionDecl>(D)->isMain()) | ||||||||
| 234 | Diag(Loc, diag::ext_main_used); | ||||||||
| 235 | |||||||||
| 236 | diagnoseUnavailableAlignedAllocation(*cast<FunctionDecl>(D), Loc); | ||||||||
| 237 | } | ||||||||
| 238 | |||||||||
| 239 | // See if this is an auto-typed variable whose initializer we are parsing. | ||||||||
| 240 | if (ParsingInitForAutoVars.count(D)) { | ||||||||
| 241 | if (isa<BindingDecl>(D)) { | ||||||||
| 242 | Diag(Loc, diag::err_binding_cannot_appear_in_own_initializer) | ||||||||
| 243 | << D->getDeclName(); | ||||||||
| 244 | } else { | ||||||||
| 245 | Diag(Loc, diag::err_auto_variable_cannot_appear_in_own_initializer) | ||||||||
| 246 | << D->getDeclName() << cast<VarDecl>(D)->getType(); | ||||||||
| 247 | } | ||||||||
| 248 | return true; | ||||||||
| 249 | } | ||||||||
| 250 | |||||||||
| 251 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
| 252 | // See if this is a deleted function. | ||||||||
| 253 | if (FD->isDeleted()) { | ||||||||
| 254 | auto *Ctor = dyn_cast<CXXConstructorDecl>(FD); | ||||||||
| 255 | if (Ctor && Ctor->isInheritingConstructor()) | ||||||||
| 256 | Diag(Loc, diag::err_deleted_inherited_ctor_use) | ||||||||
| 257 | << Ctor->getParent() | ||||||||
| 258 | << Ctor->getInheritedConstructor().getConstructor()->getParent(); | ||||||||
| 259 | else | ||||||||
| 260 | Diag(Loc, diag::err_deleted_function_use); | ||||||||
| 261 | NoteDeletedFunction(FD); | ||||||||
| 262 | return true; | ||||||||
| 263 | } | ||||||||
| 264 | |||||||||
| 265 | // [expr.prim.id]p4 | ||||||||
| 266 | // A program that refers explicitly or implicitly to a function with a | ||||||||
| 267 | // trailing requires-clause whose constraint-expression is not satisfied, | ||||||||
| 268 | // other than to declare it, is ill-formed. [...] | ||||||||
| 269 | // | ||||||||
| 270 | // See if this is a function with constraints that need to be satisfied. | ||||||||
| 271 | // Check this before deducing the return type, as it might instantiate the | ||||||||
| 272 | // definition. | ||||||||
| 273 | if (FD->getTrailingRequiresClause()) { | ||||||||
| 274 | ConstraintSatisfaction Satisfaction; | ||||||||
| 275 | if (CheckFunctionConstraints(FD, Satisfaction, Loc)) | ||||||||
| 276 | // A diagnostic will have already been generated (non-constant | ||||||||
| 277 | // constraint expression, for example) | ||||||||
| 278 | return true; | ||||||||
| 279 | if (!Satisfaction.IsSatisfied) { | ||||||||
| 280 | Diag(Loc, | ||||||||
| 281 | diag::err_reference_to_function_with_unsatisfied_constraints) | ||||||||
| 282 | << D; | ||||||||
| 283 | DiagnoseUnsatisfiedConstraint(Satisfaction); | ||||||||
| 284 | return true; | ||||||||
| 285 | } | ||||||||
| 286 | } | ||||||||
| 287 | |||||||||
| 288 | // If the function has a deduced return type, and we can't deduce it, | ||||||||
| 289 | // then we can't use it either. | ||||||||
| 290 | if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && | ||||||||
| 291 | DeduceReturnType(FD, Loc)) | ||||||||
| 292 | return true; | ||||||||
| 293 | |||||||||
| 294 | if (getLangOpts().CUDA && !CheckCUDACall(Loc, FD)) | ||||||||
| 295 | return true; | ||||||||
| 296 | |||||||||
| 297 | if (getLangOpts().SYCLIsDevice && !checkSYCLDeviceFunction(Loc, FD)) | ||||||||
| 298 | return true; | ||||||||
| 299 | } | ||||||||
| 300 | |||||||||
| 301 | if (auto *MD = dyn_cast<CXXMethodDecl>(D)) { | ||||||||
| 302 | // Lambdas are only default-constructible or assignable in C++2a onwards. | ||||||||
| 303 | if (MD->getParent()->isLambda() && | ||||||||
| 304 | ((isa<CXXConstructorDecl>(MD) && | ||||||||
| 305 | cast<CXXConstructorDecl>(MD)->isDefaultConstructor()) || | ||||||||
| 306 | MD->isCopyAssignmentOperator() || MD->isMoveAssignmentOperator())) { | ||||||||
| 307 | Diag(Loc, diag::warn_cxx17_compat_lambda_def_ctor_assign) | ||||||||
| 308 | << !isa<CXXConstructorDecl>(MD); | ||||||||
| 309 | } | ||||||||
| 310 | } | ||||||||
| 311 | |||||||||
| 312 | auto getReferencedObjCProp = [](const NamedDecl *D) -> | ||||||||
| 313 | const ObjCPropertyDecl * { | ||||||||
| 314 | if (const auto *MD = dyn_cast<ObjCMethodDecl>(D)) | ||||||||
| 315 | return MD->findPropertyDecl(); | ||||||||
| 316 | return nullptr; | ||||||||
| 317 | }; | ||||||||
| 318 | if (const ObjCPropertyDecl *ObjCPDecl = getReferencedObjCProp(D)) { | ||||||||
| 319 | if (diagnoseArgIndependentDiagnoseIfAttrs(ObjCPDecl, Loc)) | ||||||||
| 320 | return true; | ||||||||
| 321 | } else if (diagnoseArgIndependentDiagnoseIfAttrs(D, Loc)) { | ||||||||
| 322 | return true; | ||||||||
| 323 | } | ||||||||
| 324 | |||||||||
| 325 | // [OpenMP 4.0], 2.15 declare reduction Directive, Restrictions | ||||||||
| 326 | // Only the variables omp_in and omp_out are allowed in the combiner. | ||||||||
| 327 | // Only the variables omp_priv and omp_orig are allowed in the | ||||||||
| 328 | // initializer-clause. | ||||||||
| 329 | auto *DRD = dyn_cast<OMPDeclareReductionDecl>(CurContext); | ||||||||
| 330 | if (LangOpts.OpenMP && DRD && !CurContext->containsDecl(D) && | ||||||||
| 331 | isa<VarDecl>(D)) { | ||||||||
| 332 | Diag(Loc, diag::err_omp_wrong_var_in_declare_reduction) | ||||||||
| 333 | << getCurFunction()->HasOMPDeclareReductionCombiner; | ||||||||
| 334 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||||||
| 335 | return true; | ||||||||
| 336 | } | ||||||||
| 337 | |||||||||
| 338 | // [OpenMP 5.0], 2.19.7.3. declare mapper Directive, Restrictions | ||||||||
| 339 | // List-items in map clauses on this construct may only refer to the declared | ||||||||
| 340 | // variable var and entities that could be referenced by a procedure defined | ||||||||
| 341 | // at the same location | ||||||||
| 342 | auto *DMD = dyn_cast<OMPDeclareMapperDecl>(CurContext); | ||||||||
| 343 | if (LangOpts.OpenMP && DMD && !CurContext->containsDecl(D) && | ||||||||
| 344 | isa<VarDecl>(D)) { | ||||||||
| 345 | Diag(Loc, diag::err_omp_declare_mapper_wrong_var) | ||||||||
| 346 | << DMD->getVarName().getAsString(); | ||||||||
| 347 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||||||
| 348 | return true; | ||||||||
| 349 | } | ||||||||
| 350 | |||||||||
| 351 | DiagnoseAvailabilityOfDecl(D, Locs, UnknownObjCClass, ObjCPropertyAccess, | ||||||||
| 352 | AvoidPartialAvailabilityChecks, ClassReceiver); | ||||||||
| 353 | |||||||||
| 354 | DiagnoseUnusedOfDecl(*this, D, Loc); | ||||||||
| 355 | |||||||||
| 356 | diagnoseUseOfInternalDeclInInlineFunction(*this, D, Loc); | ||||||||
| 357 | |||||||||
| 358 | if (LangOpts.SYCLIsDevice || (LangOpts.OpenMP && LangOpts.OpenMPIsDevice)) { | ||||||||
| 359 | if (const auto *VD = dyn_cast<ValueDecl>(D)) | ||||||||
| 360 | checkDeviceDecl(VD, Loc); | ||||||||
| 361 | |||||||||
| 362 | if (!Context.getTargetInfo().isTLSSupported()) | ||||||||
| 363 | if (const auto *VD = dyn_cast<VarDecl>(D)) | ||||||||
| 364 | if (VD->getTLSKind() != VarDecl::TLS_None) | ||||||||
| 365 | targetDiag(*Locs.begin(), diag::err_thread_unsupported); | ||||||||
| 366 | } | ||||||||
| 367 | |||||||||
| 368 | if (isa<ParmVarDecl>(D) && isa<RequiresExprBodyDecl>(D->getDeclContext()) && | ||||||||
| 369 | !isUnevaluatedContext()) { | ||||||||
| 370 | // C++ [expr.prim.req.nested] p3 | ||||||||
| 371 | // A local parameter shall only appear as an unevaluated operand | ||||||||
| 372 | // (Clause 8) within the constraint-expression. | ||||||||
| 373 | Diag(Loc, diag::err_requires_expr_parameter_referenced_in_evaluated_context) | ||||||||
| 374 | << D; | ||||||||
| 375 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||||||
| 376 | return true; | ||||||||
| 377 | } | ||||||||
| 378 | |||||||||
| 379 | return false; | ||||||||
| 380 | } | ||||||||
| 381 | |||||||||
| 382 | /// DiagnoseSentinelCalls - This routine checks whether a call or | ||||||||
| 383 | /// message-send is to a declaration with the sentinel attribute, and | ||||||||
| 384 | /// if so, it checks that the requirements of the sentinel are | ||||||||
| 385 | /// satisfied. | ||||||||
| 386 | void Sema::DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, | ||||||||
| 387 | ArrayRef<Expr *> Args) { | ||||||||
| 388 | const SentinelAttr *attr = D->getAttr<SentinelAttr>(); | ||||||||
| 389 | if (!attr) | ||||||||
| 390 | return; | ||||||||
| 391 | |||||||||
| 392 | // The number of formal parameters of the declaration. | ||||||||
| 393 | unsigned numFormalParams; | ||||||||
| 394 | |||||||||
| 395 | // The kind of declaration. This is also an index into a %select in | ||||||||
| 396 | // the diagnostic. | ||||||||
| 397 | enum CalleeType { CT_Function, CT_Method, CT_Block } calleeType; | ||||||||
| 398 | |||||||||
| 399 | if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { | ||||||||
| 400 | numFormalParams = MD->param_size(); | ||||||||
| 401 | calleeType = CT_Method; | ||||||||
| 402 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
| 403 | numFormalParams = FD->param_size(); | ||||||||
| 404 | calleeType = CT_Function; | ||||||||
| 405 | } else if (isa<VarDecl>(D)) { | ||||||||
| 406 | QualType type = cast<ValueDecl>(D)->getType(); | ||||||||
| 407 | const FunctionType *fn = nullptr; | ||||||||
| 408 | if (const PointerType *ptr = type->getAs<PointerType>()) { | ||||||||
| 409 | fn = ptr->getPointeeType()->getAs<FunctionType>(); | ||||||||
| 410 | if (!fn) return; | ||||||||
| 411 | calleeType = CT_Function; | ||||||||
| 412 | } else if (const BlockPointerType *ptr = type->getAs<BlockPointerType>()) { | ||||||||
| 413 | fn = ptr->getPointeeType()->castAs<FunctionType>(); | ||||||||
| 414 | calleeType = CT_Block; | ||||||||
| 415 | } else { | ||||||||
| 416 | return; | ||||||||
| 417 | } | ||||||||
| 418 | |||||||||
| 419 | if (const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(fn)) { | ||||||||
| 420 | numFormalParams = proto->getNumParams(); | ||||||||
| 421 | } else { | ||||||||
| 422 | numFormalParams = 0; | ||||||||
| 423 | } | ||||||||
| 424 | } else { | ||||||||
| 425 | return; | ||||||||
| 426 | } | ||||||||
| 427 | |||||||||
| 428 | // "nullPos" is the number of formal parameters at the end which | ||||||||
| 429 | // effectively count as part of the variadic arguments. This is | ||||||||
| 430 | // useful if you would prefer to not have *any* formal parameters, | ||||||||
| 431 | // but the language forces you to have at least one. | ||||||||
| 432 | unsigned nullPos = attr->getNullPos(); | ||||||||
| 433 | assert((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel")(((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel" ) ? static_cast<void> (0) : __assert_fail ("(nullPos == 0 || nullPos == 1) && \"invalid null position on sentinel\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 433, __PRETTY_FUNCTION__)); | ||||||||
| 434 | numFormalParams = (nullPos > numFormalParams ? 0 : numFormalParams - nullPos); | ||||||||
| 435 | |||||||||
| 436 | // The number of arguments which should follow the sentinel. | ||||||||
| 437 | unsigned numArgsAfterSentinel = attr->getSentinel(); | ||||||||
| 438 | |||||||||
| 439 | // If there aren't enough arguments for all the formal parameters, | ||||||||
| 440 | // the sentinel, and the args after the sentinel, complain. | ||||||||
| 441 | if (Args.size() < numFormalParams + numArgsAfterSentinel + 1) { | ||||||||
| 442 | Diag(Loc, diag::warn_not_enough_argument) << D->getDeclName(); | ||||||||
| 443 | Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); | ||||||||
| 444 | return; | ||||||||
| 445 | } | ||||||||
| 446 | |||||||||
| 447 | // Otherwise, find the sentinel expression. | ||||||||
| 448 | Expr *sentinelExpr = Args[Args.size() - numArgsAfterSentinel - 1]; | ||||||||
| 449 | if (!sentinelExpr) return; | ||||||||
| 450 | if (sentinelExpr->isValueDependent()) return; | ||||||||
| 451 | if (Context.isSentinelNullExpr(sentinelExpr)) return; | ||||||||
| 452 | |||||||||
| 453 | // Pick a reasonable string to insert. Optimistically use 'nil', 'nullptr', | ||||||||
| 454 | // or 'NULL' if those are actually defined in the context. Only use | ||||||||
| 455 | // 'nil' for ObjC methods, where it's much more likely that the | ||||||||
| 456 | // variadic arguments form a list of object pointers. | ||||||||
| 457 | SourceLocation MissingNilLoc = getLocForEndOfToken(sentinelExpr->getEndLoc()); | ||||||||
| 458 | std::string NullValue; | ||||||||
| 459 | if (calleeType == CT_Method && PP.isMacroDefined("nil")) | ||||||||
| 460 | NullValue = "nil"; | ||||||||
| 461 | else if (getLangOpts().CPlusPlus11) | ||||||||
| 462 | NullValue = "nullptr"; | ||||||||
| 463 | else if (PP.isMacroDefined("NULL")) | ||||||||
| 464 | NullValue = "NULL"; | ||||||||
| 465 | else | ||||||||
| 466 | NullValue = "(void*) 0"; | ||||||||
| 467 | |||||||||
| 468 | if (MissingNilLoc.isInvalid()) | ||||||||
| 469 | Diag(Loc, diag::warn_missing_sentinel) << int(calleeType); | ||||||||
| 470 | else | ||||||||
| 471 | Diag(MissingNilLoc, diag::warn_missing_sentinel) | ||||||||
| 472 | << int(calleeType) | ||||||||
| 473 | << FixItHint::CreateInsertion(MissingNilLoc, ", " + NullValue); | ||||||||
| 474 | Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); | ||||||||
| 475 | } | ||||||||
| 476 | |||||||||
| 477 | SourceRange Sema::getExprRange(Expr *E) const { | ||||||||
| 478 | return E ? E->getSourceRange() : SourceRange(); | ||||||||
| 479 | } | ||||||||
| 480 | |||||||||
| 481 | //===----------------------------------------------------------------------===// | ||||||||
| 482 | // Standard Promotions and Conversions | ||||||||
| 483 | //===----------------------------------------------------------------------===// | ||||||||
| 484 | |||||||||
| 485 | /// DefaultFunctionArrayConversion (C99 6.3.2.1p3, C99 6.3.2.1p4). | ||||||||
| 486 | ExprResult Sema::DefaultFunctionArrayConversion(Expr *E, bool Diagnose) { | ||||||||
| 487 | // Handle any placeholder expressions which made it here. | ||||||||
| 488 | if (E->getType()->isPlaceholderType()) { | ||||||||
| 489 | ExprResult result = CheckPlaceholderExpr(E); | ||||||||
| 490 | if (result.isInvalid()) return ExprError(); | ||||||||
| 491 | E = result.get(); | ||||||||
| 492 | } | ||||||||
| 493 | |||||||||
| 494 | QualType Ty = E->getType(); | ||||||||
| 495 | assert(!Ty.isNull() && "DefaultFunctionArrayConversion - missing type")((!Ty.isNull() && "DefaultFunctionArrayConversion - missing type" ) ? static_cast<void> (0) : __assert_fail ("!Ty.isNull() && \"DefaultFunctionArrayConversion - missing type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 495, __PRETTY_FUNCTION__)); | ||||||||
| 496 | |||||||||
| 497 | if (Ty->isFunctionType()) { | ||||||||
| 498 | if (auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts())) | ||||||||
| 499 | if (auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl())) | ||||||||
| 500 | if (!checkAddressOfFunctionIsAvailable(FD, Diagnose, E->getExprLoc())) | ||||||||
| 501 | return ExprError(); | ||||||||
| 502 | |||||||||
| 503 | E = ImpCastExprToType(E, Context.getPointerType(Ty), | ||||||||
| 504 | CK_FunctionToPointerDecay).get(); | ||||||||
| 505 | } else if (Ty->isArrayType()) { | ||||||||
| 506 | // In C90 mode, arrays only promote to pointers if the array expression is | ||||||||
| 507 | // an lvalue. The relevant legalese is C90 6.2.2.1p3: "an lvalue that has | ||||||||
| 508 | // type 'array of type' is converted to an expression that has type 'pointer | ||||||||
| 509 | // to type'...". In C99 this was changed to: C99 6.3.2.1p3: "an expression | ||||||||
| 510 | // that has type 'array of type' ...". The relevant change is "an lvalue" | ||||||||
| 511 | // (C90) to "an expression" (C99). | ||||||||
| 512 | // | ||||||||
| 513 | // C++ 4.2p1: | ||||||||
| 514 | // An lvalue or rvalue of type "array of N T" or "array of unknown bound of | ||||||||
| 515 | // T" can be converted to an rvalue of type "pointer to T". | ||||||||
| 516 | // | ||||||||
| 517 | if (getLangOpts().C99 || getLangOpts().CPlusPlus || E->isLValue()) | ||||||||
| 518 | E = ImpCastExprToType(E, Context.getArrayDecayedType(Ty), | ||||||||
| 519 | CK_ArrayToPointerDecay).get(); | ||||||||
| 520 | } | ||||||||
| 521 | return E; | ||||||||
| 522 | } | ||||||||
| 523 | |||||||||
| 524 | static void CheckForNullPointerDereference(Sema &S, Expr *E) { | ||||||||
| 525 | // Check to see if we are dereferencing a null pointer. If so, | ||||||||
| 526 | // and if not volatile-qualified, this is undefined behavior that the | ||||||||
| 527 | // optimizer will delete, so warn about it. People sometimes try to use this | ||||||||
| 528 | // to get a deterministic trap and are surprised by clang's behavior. This | ||||||||
| 529 | // only handles the pattern "*null", which is a very syntactic check. | ||||||||
| 530 | const auto *UO = dyn_cast<UnaryOperator>(E->IgnoreParenCasts()); | ||||||||
| 531 | if (UO && UO->getOpcode() == UO_Deref && | ||||||||
| 532 | UO->getSubExpr()->getType()->isPointerType()) { | ||||||||
| 533 | const LangAS AS = | ||||||||
| 534 | UO->getSubExpr()->getType()->getPointeeType().getAddressSpace(); | ||||||||
| 535 | if ((!isTargetAddressSpace(AS) || | ||||||||
| 536 | (isTargetAddressSpace(AS) && toTargetAddressSpace(AS) == 0)) && | ||||||||
| 537 | UO->getSubExpr()->IgnoreParenCasts()->isNullPointerConstant( | ||||||||
| 538 | S.Context, Expr::NPC_ValueDependentIsNotNull) && | ||||||||
| 539 | !UO->getType().isVolatileQualified()) { | ||||||||
| 540 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, | ||||||||
| 541 | S.PDiag(diag::warn_indirection_through_null) | ||||||||
| 542 | << UO->getSubExpr()->getSourceRange()); | ||||||||
| 543 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, | ||||||||
| 544 | S.PDiag(diag::note_indirection_through_null)); | ||||||||
| 545 | } | ||||||||
| 546 | } | ||||||||
| 547 | } | ||||||||
| 548 | |||||||||
| 549 | static void DiagnoseDirectIsaAccess(Sema &S, const ObjCIvarRefExpr *OIRE, | ||||||||
| 550 | SourceLocation AssignLoc, | ||||||||
| 551 | const Expr* RHS) { | ||||||||
| 552 | const ObjCIvarDecl *IV = OIRE->getDecl(); | ||||||||
| 553 | if (!IV) | ||||||||
| 554 | return; | ||||||||
| 555 | |||||||||
| 556 | DeclarationName MemberName = IV->getDeclName(); | ||||||||
| 557 | IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); | ||||||||
| 558 | if (!Member || !Member->isStr("isa")) | ||||||||
| 559 | return; | ||||||||
| 560 | |||||||||
| 561 | const Expr *Base = OIRE->getBase(); | ||||||||
| 562 | QualType BaseType = Base->getType(); | ||||||||
| 563 | if (OIRE->isArrow()) | ||||||||
| 564 | BaseType = BaseType->getPointeeType(); | ||||||||
| 565 | if (const ObjCObjectType *OTy = BaseType->getAs<ObjCObjectType>()) | ||||||||
| 566 | if (ObjCInterfaceDecl *IDecl = OTy->getInterface()) { | ||||||||
| 567 | ObjCInterfaceDecl *ClassDeclared = nullptr; | ||||||||
| 568 | ObjCIvarDecl *IV = IDecl->lookupInstanceVariable(Member, ClassDeclared); | ||||||||
| 569 | if (!ClassDeclared->getSuperClass() | ||||||||
| 570 | && (*ClassDeclared->ivar_begin()) == IV) { | ||||||||
| 571 | if (RHS) { | ||||||||
| 572 | NamedDecl *ObjectSetClass = | ||||||||
| 573 | S.LookupSingleName(S.TUScope, | ||||||||
| 574 | &S.Context.Idents.get("object_setClass"), | ||||||||
| 575 | SourceLocation(), S.LookupOrdinaryName); | ||||||||
| 576 | if (ObjectSetClass) { | ||||||||
| 577 | SourceLocation RHSLocEnd = S.getLocForEndOfToken(RHS->getEndLoc()); | ||||||||
| 578 | S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_assign) | ||||||||
| 579 | << FixItHint::CreateInsertion(OIRE->getBeginLoc(), | ||||||||
| 580 | "object_setClass(") | ||||||||
| 581 | << FixItHint::CreateReplacement( | ||||||||
| 582 | SourceRange(OIRE->getOpLoc(), AssignLoc), ",") | ||||||||
| 583 | << FixItHint::CreateInsertion(RHSLocEnd, ")"); | ||||||||
| 584 | } | ||||||||
| 585 | else | ||||||||
| 586 | S.Diag(OIRE->getLocation(), diag::warn_objc_isa_assign); | ||||||||
| 587 | } else { | ||||||||
| 588 | NamedDecl *ObjectGetClass = | ||||||||
| 589 | S.LookupSingleName(S.TUScope, | ||||||||
| 590 | &S.Context.Idents.get("object_getClass"), | ||||||||
| 591 | SourceLocation(), S.LookupOrdinaryName); | ||||||||
| 592 | if (ObjectGetClass) | ||||||||
| 593 | S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_use) | ||||||||
| 594 | << FixItHint::CreateInsertion(OIRE->getBeginLoc(), | ||||||||
| 595 | "object_getClass(") | ||||||||
| 596 | << FixItHint::CreateReplacement( | ||||||||
| 597 | SourceRange(OIRE->getOpLoc(), OIRE->getEndLoc()), ")"); | ||||||||
| 598 | else | ||||||||
| 599 | S.Diag(OIRE->getLocation(), diag::warn_objc_isa_use); | ||||||||
| 600 | } | ||||||||
| 601 | S.Diag(IV->getLocation(), diag::note_ivar_decl); | ||||||||
| 602 | } | ||||||||
| 603 | } | ||||||||
| 604 | } | ||||||||
| 605 | |||||||||
| 606 | ExprResult Sema::DefaultLvalueConversion(Expr *E) { | ||||||||
| 607 | // Handle any placeholder expressions which made it here. | ||||||||
| 608 | if (E->getType()->isPlaceholderType()) { | ||||||||
| 609 | ExprResult result = CheckPlaceholderExpr(E); | ||||||||
| 610 | if (result.isInvalid()) return ExprError(); | ||||||||
| 611 | E = result.get(); | ||||||||
| 612 | } | ||||||||
| 613 | |||||||||
| 614 | // C++ [conv.lval]p1: | ||||||||
| 615 | // A glvalue of a non-function, non-array type T can be | ||||||||
| 616 | // converted to a prvalue. | ||||||||
| 617 | if (!E->isGLValue()) return E; | ||||||||
| 618 | |||||||||
| 619 | QualType T = E->getType(); | ||||||||
| 620 | assert(!T.isNull() && "r-value conversion on typeless expression?")((!T.isNull() && "r-value conversion on typeless expression?" ) ? static_cast<void> (0) : __assert_fail ("!T.isNull() && \"r-value conversion on typeless expression?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 620, __PRETTY_FUNCTION__)); | ||||||||
| 621 | |||||||||
| 622 | // lvalue-to-rvalue conversion cannot be applied to function or array types. | ||||||||
| 623 | if (T->isFunctionType() || T->isArrayType()) | ||||||||
| 624 | return E; | ||||||||
| 625 | |||||||||
| 626 | // We don't want to throw lvalue-to-rvalue casts on top of | ||||||||
| 627 | // expressions of certain types in C++. | ||||||||
| 628 | if (getLangOpts().CPlusPlus && | ||||||||
| 629 | (E->getType() == Context.OverloadTy || | ||||||||
| 630 | T->isDependentType() || | ||||||||
| 631 | T->isRecordType())) | ||||||||
| 632 | return E; | ||||||||
| 633 | |||||||||
| 634 | // The C standard is actually really unclear on this point, and | ||||||||
| 635 | // DR106 tells us what the result should be but not why. It's | ||||||||
| 636 | // generally best to say that void types just doesn't undergo | ||||||||
| 637 | // lvalue-to-rvalue at all. Note that expressions of unqualified | ||||||||
| 638 | // 'void' type are never l-values, but qualified void can be. | ||||||||
| 639 | if (T->isVoidType()) | ||||||||
| 640 | return E; | ||||||||
| 641 | |||||||||
| 642 | // OpenCL usually rejects direct accesses to values of 'half' type. | ||||||||
| 643 | if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp16") && | ||||||||
| 644 | T->isHalfType()) { | ||||||||
| 645 | Diag(E->getExprLoc(), diag::err_opencl_half_load_store) | ||||||||
| 646 | << 0 << T; | ||||||||
| 647 | return ExprError(); | ||||||||
| 648 | } | ||||||||
| 649 | |||||||||
| 650 | CheckForNullPointerDereference(*this, E); | ||||||||
| 651 | if (const ObjCIsaExpr *OISA = dyn_cast<ObjCIsaExpr>(E->IgnoreParenCasts())) { | ||||||||
| 652 | NamedDecl *ObjectGetClass = LookupSingleName(TUScope, | ||||||||
| 653 | &Context.Idents.get("object_getClass"), | ||||||||
| 654 | SourceLocation(), LookupOrdinaryName); | ||||||||
| 655 | if (ObjectGetClass) | ||||||||
| 656 | Diag(E->getExprLoc(), diag::warn_objc_isa_use) | ||||||||
| 657 | << FixItHint::CreateInsertion(OISA->getBeginLoc(), "object_getClass(") | ||||||||
| 658 | << FixItHint::CreateReplacement( | ||||||||
| 659 | SourceRange(OISA->getOpLoc(), OISA->getIsaMemberLoc()), ")"); | ||||||||
| 660 | else | ||||||||
| 661 | Diag(E->getExprLoc(), diag::warn_objc_isa_use); | ||||||||
| 662 | } | ||||||||
| 663 | else if (const ObjCIvarRefExpr *OIRE = | ||||||||
| 664 | dyn_cast<ObjCIvarRefExpr>(E->IgnoreParenCasts())) | ||||||||
| 665 | DiagnoseDirectIsaAccess(*this, OIRE, SourceLocation(), /* Expr*/nullptr); | ||||||||
| 666 | |||||||||
| 667 | // C++ [conv.lval]p1: | ||||||||
| 668 | // [...] If T is a non-class type, the type of the prvalue is the | ||||||||
| 669 | // cv-unqualified version of T. Otherwise, the type of the | ||||||||
| 670 | // rvalue is T. | ||||||||
| 671 | // | ||||||||
| 672 | // C99 6.3.2.1p2: | ||||||||
| 673 | // If the lvalue has qualified type, the value has the unqualified | ||||||||
| 674 | // version of the type of the lvalue; otherwise, the value has the | ||||||||
| 675 | // type of the lvalue. | ||||||||
| 676 | if (T.hasQualifiers()) | ||||||||
| 677 | T = T.getUnqualifiedType(); | ||||||||
| 678 | |||||||||
| 679 | // Under the MS ABI, lock down the inheritance model now. | ||||||||
| 680 | if (T->isMemberPointerType() && | ||||||||
| 681 | Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||||||
| 682 | (void)isCompleteType(E->getExprLoc(), T); | ||||||||
| 683 | |||||||||
| 684 | ExprResult Res = CheckLValueToRValueConversionOperand(E); | ||||||||
| 685 | if (Res.isInvalid()) | ||||||||
| 686 | return Res; | ||||||||
| 687 | E = Res.get(); | ||||||||
| 688 | |||||||||
| 689 | // Loading a __weak object implicitly retains the value, so we need a cleanup to | ||||||||
| 690 | // balance that. | ||||||||
| 691 | if (E->getType().getObjCLifetime() == Qualifiers::OCL_Weak) | ||||||||
| 692 | Cleanup.setExprNeedsCleanups(true); | ||||||||
| 693 | |||||||||
| 694 | if (E->getType().isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||||||
| 695 | Cleanup.setExprNeedsCleanups(true); | ||||||||
| 696 | |||||||||
| 697 | // C++ [conv.lval]p3: | ||||||||
| 698 | // If T is cv std::nullptr_t, the result is a null pointer constant. | ||||||||
| 699 | CastKind CK = T->isNullPtrType() ? CK_NullToPointer : CK_LValueToRValue; | ||||||||
| 700 | Res = ImplicitCastExpr::Create(Context, T, CK, E, nullptr, VK_RValue); | ||||||||
| 701 | |||||||||
| 702 | // C11 6.3.2.1p2: | ||||||||
| 703 | // ... if the lvalue has atomic type, the value has the non-atomic version | ||||||||
| 704 | // of the type of the lvalue ... | ||||||||
| 705 | if (const AtomicType *Atomic = T->getAs<AtomicType>()) { | ||||||||
| 706 | T = Atomic->getValueType().getUnqualifiedType(); | ||||||||
| 707 | Res = ImplicitCastExpr::Create(Context, T, CK_AtomicToNonAtomic, Res.get(), | ||||||||
| 708 | nullptr, VK_RValue); | ||||||||
| 709 | } | ||||||||
| 710 | |||||||||
| 711 | return Res; | ||||||||
| 712 | } | ||||||||
| 713 | |||||||||
| 714 | ExprResult Sema::DefaultFunctionArrayLvalueConversion(Expr *E, bool Diagnose) { | ||||||||
| 715 | ExprResult Res = DefaultFunctionArrayConversion(E, Diagnose); | ||||||||
| 716 | if (Res.isInvalid()) | ||||||||
| 717 | return ExprError(); | ||||||||
| 718 | Res = DefaultLvalueConversion(Res.get()); | ||||||||
| 719 | if (Res.isInvalid()) | ||||||||
| 720 | return ExprError(); | ||||||||
| 721 | return Res; | ||||||||
| 722 | } | ||||||||
| 723 | |||||||||
| 724 | /// CallExprUnaryConversions - a special case of an unary conversion | ||||||||
| 725 | /// performed on a function designator of a call expression. | ||||||||
| 726 | ExprResult Sema::CallExprUnaryConversions(Expr *E) { | ||||||||
| 727 | QualType Ty = E->getType(); | ||||||||
| 728 | ExprResult Res = E; | ||||||||
| 729 | // Only do implicit cast for a function type, but not for a pointer | ||||||||
| 730 | // to function type. | ||||||||
| 731 | if (Ty->isFunctionType()) { | ||||||||
| 732 | Res = ImpCastExprToType(E, Context.getPointerType(Ty), | ||||||||
| 733 | CK_FunctionToPointerDecay); | ||||||||
| 734 | if (Res.isInvalid()) | ||||||||
| 735 | return ExprError(); | ||||||||
| 736 | } | ||||||||
| 737 | Res = DefaultLvalueConversion(Res.get()); | ||||||||
| 738 | if (Res.isInvalid()) | ||||||||
| 739 | return ExprError(); | ||||||||
| 740 | return Res.get(); | ||||||||
| 741 | } | ||||||||
| 742 | |||||||||
| 743 | /// UsualUnaryConversions - Performs various conversions that are common to most | ||||||||
| 744 | /// operators (C99 6.3). The conversions of array and function types are | ||||||||
| 745 | /// sometimes suppressed. For example, the array->pointer conversion doesn't | ||||||||
| 746 | /// apply if the array is an argument to the sizeof or address (&) operators. | ||||||||
| 747 | /// In these instances, this routine should *not* be called. | ||||||||
| 748 | ExprResult Sema::UsualUnaryConversions(Expr *E) { | ||||||||
| 749 | // First, convert to an r-value. | ||||||||
| 750 | ExprResult Res = DefaultFunctionArrayLvalueConversion(E); | ||||||||
| 751 | if (Res.isInvalid()) | ||||||||
| 752 | return ExprError(); | ||||||||
| 753 | E = Res.get(); | ||||||||
| 754 | |||||||||
| 755 | QualType Ty = E->getType(); | ||||||||
| 756 | assert(!Ty.isNull() && "UsualUnaryConversions - missing type")((!Ty.isNull() && "UsualUnaryConversions - missing type" ) ? static_cast<void> (0) : __assert_fail ("!Ty.isNull() && \"UsualUnaryConversions - missing type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 756, __PRETTY_FUNCTION__)); | ||||||||
| 757 | |||||||||
| 758 | // Half FP have to be promoted to float unless it is natively supported | ||||||||
| 759 | if (Ty->isHalfType() && !getLangOpts().NativeHalfType) | ||||||||
| 760 | return ImpCastExprToType(Res.get(), Context.FloatTy, CK_FloatingCast); | ||||||||
| 761 | |||||||||
| 762 | // Try to perform integral promotions if the object has a theoretically | ||||||||
| 763 | // promotable type. | ||||||||
| 764 | if (Ty->isIntegralOrUnscopedEnumerationType()) { | ||||||||
| 765 | // C99 6.3.1.1p2: | ||||||||
| 766 | // | ||||||||
| 767 | // The following may be used in an expression wherever an int or | ||||||||
| 768 | // unsigned int may be used: | ||||||||
| 769 | // - an object or expression with an integer type whose integer | ||||||||
| 770 | // conversion rank is less than or equal to the rank of int | ||||||||
| 771 | // and unsigned int. | ||||||||
| 772 | // - A bit-field of type _Bool, int, signed int, or unsigned int. | ||||||||
| 773 | // | ||||||||
| 774 | // If an int can represent all values of the original type, the | ||||||||
| 775 | // value is converted to an int; otherwise, it is converted to an | ||||||||
| 776 | // unsigned int. These are called the integer promotions. All | ||||||||
| 777 | // other types are unchanged by the integer promotions. | ||||||||
| 778 | |||||||||
| 779 | QualType PTy = Context.isPromotableBitField(E); | ||||||||
| 780 | if (!PTy.isNull()) { | ||||||||
| 781 | E = ImpCastExprToType(E, PTy, CK_IntegralCast).get(); | ||||||||
| 782 | return E; | ||||||||
| 783 | } | ||||||||
| 784 | if (Ty->isPromotableIntegerType()) { | ||||||||
| 785 | QualType PT = Context.getPromotedIntegerType(Ty); | ||||||||
| 786 | E = ImpCastExprToType(E, PT, CK_IntegralCast).get(); | ||||||||
| 787 | return E; | ||||||||
| 788 | } | ||||||||
| 789 | } | ||||||||
| 790 | return E; | ||||||||
| 791 | } | ||||||||
| 792 | |||||||||
| 793 | /// DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that | ||||||||
| 794 | /// do not have a prototype. Arguments that have type float or __fp16 | ||||||||
| 795 | /// are promoted to double. All other argument types are converted by | ||||||||
| 796 | /// UsualUnaryConversions(). | ||||||||
| 797 | ExprResult Sema::DefaultArgumentPromotion(Expr *E) { | ||||||||
| 798 | QualType Ty = E->getType(); | ||||||||
| 799 | assert(!Ty.isNull() && "DefaultArgumentPromotion - missing type")((!Ty.isNull() && "DefaultArgumentPromotion - missing type" ) ? static_cast<void> (0) : __assert_fail ("!Ty.isNull() && \"DefaultArgumentPromotion - missing type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 799, __PRETTY_FUNCTION__)); | ||||||||
| 800 | |||||||||
| 801 | ExprResult Res = UsualUnaryConversions(E); | ||||||||
| 802 | if (Res.isInvalid()) | ||||||||
| 803 | return ExprError(); | ||||||||
| 804 | E = Res.get(); | ||||||||
| 805 | |||||||||
| 806 | // If this is a 'float' or '__fp16' (CVR qualified or typedef) | ||||||||
| 807 | // promote to double. | ||||||||
| 808 | // Note that default argument promotion applies only to float (and | ||||||||
| 809 | // half/fp16); it does not apply to _Float16. | ||||||||
| 810 | const BuiltinType *BTy = Ty->getAs<BuiltinType>(); | ||||||||
| 811 | if (BTy && (BTy->getKind() == BuiltinType::Half || | ||||||||
| 812 | BTy->getKind() == BuiltinType::Float)) { | ||||||||
| 813 | if (getLangOpts().OpenCL && | ||||||||
| 814 | !getOpenCLOptions().isEnabled("cl_khr_fp64")) { | ||||||||
| 815 | if (BTy->getKind() == BuiltinType::Half) { | ||||||||
| 816 | E = ImpCastExprToType(E, Context.FloatTy, CK_FloatingCast).get(); | ||||||||
| 817 | } | ||||||||
| 818 | } else { | ||||||||
| 819 | E = ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast).get(); | ||||||||
| 820 | } | ||||||||
| 821 | } | ||||||||
| 822 | |||||||||
| 823 | // C++ performs lvalue-to-rvalue conversion as a default argument | ||||||||
| 824 | // promotion, even on class types, but note: | ||||||||
| 825 | // C++11 [conv.lval]p2: | ||||||||
| 826 | // When an lvalue-to-rvalue conversion occurs in an unevaluated | ||||||||
| 827 | // operand or a subexpression thereof the value contained in the | ||||||||
| 828 | // referenced object is not accessed. Otherwise, if the glvalue | ||||||||
| 829 | // has a class type, the conversion copy-initializes a temporary | ||||||||
| 830 | // of type T from the glvalue and the result of the conversion | ||||||||
| 831 | // is a prvalue for the temporary. | ||||||||
| 832 | // FIXME: add some way to gate this entire thing for correctness in | ||||||||
| 833 | // potentially potentially evaluated contexts. | ||||||||
| 834 | if (getLangOpts().CPlusPlus && E->isGLValue() && !isUnevaluatedContext()) { | ||||||||
| 835 | ExprResult Temp = PerformCopyInitialization( | ||||||||
| 836 | InitializedEntity::InitializeTemporary(E->getType()), | ||||||||
| 837 | E->getExprLoc(), E); | ||||||||
| 838 | if (Temp.isInvalid()) | ||||||||
| 839 | return ExprError(); | ||||||||
| 840 | E = Temp.get(); | ||||||||
| 841 | } | ||||||||
| 842 | |||||||||
| 843 | return E; | ||||||||
| 844 | } | ||||||||
| 845 | |||||||||
| 846 | /// Determine the degree of POD-ness for an expression. | ||||||||
| 847 | /// Incomplete types are considered POD, since this check can be performed | ||||||||
| 848 | /// when we're in an unevaluated context. | ||||||||
| 849 | Sema::VarArgKind Sema::isValidVarArgType(const QualType &Ty) { | ||||||||
| 850 | if (Ty->isIncompleteType()) { | ||||||||
| 851 | // C++11 [expr.call]p7: | ||||||||
| 852 | // After these conversions, if the argument does not have arithmetic, | ||||||||
| 853 | // enumeration, pointer, pointer to member, or class type, the program | ||||||||
| 854 | // is ill-formed. | ||||||||
| 855 | // | ||||||||
| 856 | // Since we've already performed array-to-pointer and function-to-pointer | ||||||||
| 857 | // decay, the only such type in C++ is cv void. This also handles | ||||||||
| 858 | // initializer lists as variadic arguments. | ||||||||
| 859 | if (Ty->isVoidType()) | ||||||||
| 860 | return VAK_Invalid; | ||||||||
| 861 | |||||||||
| 862 | if (Ty->isObjCObjectType()) | ||||||||
| 863 | return VAK_Invalid; | ||||||||
| 864 | return VAK_Valid; | ||||||||
| 865 | } | ||||||||
| 866 | |||||||||
| 867 | if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||||||
| 868 | return VAK_Invalid; | ||||||||
| 869 | |||||||||
| 870 | if (Ty.isCXX98PODType(Context)) | ||||||||
| 871 | return VAK_Valid; | ||||||||
| 872 | |||||||||
| 873 | // C++11 [expr.call]p7: | ||||||||
| 874 | // Passing a potentially-evaluated argument of class type (Clause 9) | ||||||||
| 875 | // having a non-trivial copy constructor, a non-trivial move constructor, | ||||||||
| 876 | // or a non-trivial destructor, with no corresponding parameter, | ||||||||
| 877 | // is conditionally-supported with implementation-defined semantics. | ||||||||
| 878 | if (getLangOpts().CPlusPlus11 && !Ty->isDependentType()) | ||||||||
| 879 | if (CXXRecordDecl *Record = Ty->getAsCXXRecordDecl()) | ||||||||
| 880 | if (!Record->hasNonTrivialCopyConstructor() && | ||||||||
| 881 | !Record->hasNonTrivialMoveConstructor() && | ||||||||
| 882 | !Record->hasNonTrivialDestructor()) | ||||||||
| 883 | return VAK_ValidInCXX11; | ||||||||
| 884 | |||||||||
| 885 | if (getLangOpts().ObjCAutoRefCount && Ty->isObjCLifetimeType()) | ||||||||
| 886 | return VAK_Valid; | ||||||||
| 887 | |||||||||
| 888 | if (Ty->isObjCObjectType()) | ||||||||
| 889 | return VAK_Invalid; | ||||||||
| 890 | |||||||||
| 891 | if (getLangOpts().MSVCCompat) | ||||||||
| 892 | return VAK_MSVCUndefined; | ||||||||
| 893 | |||||||||
| 894 | // FIXME: In C++11, these cases are conditionally-supported, meaning we're | ||||||||
| 895 | // permitted to reject them. We should consider doing so. | ||||||||
| 896 | return VAK_Undefined; | ||||||||
| 897 | } | ||||||||
| 898 | |||||||||
| 899 | void Sema::checkVariadicArgument(const Expr *E, VariadicCallType CT) { | ||||||||
| 900 | // Don't allow one to pass an Objective-C interface to a vararg. | ||||||||
| 901 | const QualType &Ty = E->getType(); | ||||||||
| 902 | VarArgKind VAK = isValidVarArgType(Ty); | ||||||||
| 903 | |||||||||
| 904 | // Complain about passing non-POD types through varargs. | ||||||||
| 905 | switch (VAK) { | ||||||||
| 906 | case VAK_ValidInCXX11: | ||||||||
| 907 | DiagRuntimeBehavior( | ||||||||
| 908 | E->getBeginLoc(), nullptr, | ||||||||
| 909 | PDiag(diag::warn_cxx98_compat_pass_non_pod_arg_to_vararg) << Ty << CT); | ||||||||
| 910 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 911 | case VAK_Valid: | ||||||||
| 912 | if (Ty->isRecordType()) { | ||||||||
| 913 | // This is unlikely to be what the user intended. If the class has a | ||||||||
| 914 | // 'c_str' member function, the user probably meant to call that. | ||||||||
| 915 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||||||
| 916 | PDiag(diag::warn_pass_class_arg_to_vararg) | ||||||||
| 917 | << Ty << CT << hasCStrMethod(E) << ".c_str()"); | ||||||||
| 918 | } | ||||||||
| 919 | break; | ||||||||
| 920 | |||||||||
| 921 | case VAK_Undefined: | ||||||||
| 922 | case VAK_MSVCUndefined: | ||||||||
| 923 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||||||
| 924 | PDiag(diag::warn_cannot_pass_non_pod_arg_to_vararg) | ||||||||
| 925 | << getLangOpts().CPlusPlus11 << Ty << CT); | ||||||||
| 926 | break; | ||||||||
| 927 | |||||||||
| 928 | case VAK_Invalid: | ||||||||
| 929 | if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||||||
| 930 | Diag(E->getBeginLoc(), | ||||||||
| 931 | diag::err_cannot_pass_non_trivial_c_struct_to_vararg) | ||||||||
| 932 | << Ty << CT; | ||||||||
| 933 | else if (Ty->isObjCObjectType()) | ||||||||
| 934 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||||||
| 935 | PDiag(diag::err_cannot_pass_objc_interface_to_vararg) | ||||||||
| 936 | << Ty << CT); | ||||||||
| 937 | else | ||||||||
| 938 | Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg) | ||||||||
| 939 | << isa<InitListExpr>(E) << Ty << CT; | ||||||||
| 940 | break; | ||||||||
| 941 | } | ||||||||
| 942 | } | ||||||||
| 943 | |||||||||
| 944 | /// DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but | ||||||||
| 945 | /// will create a trap if the resulting type is not a POD type. | ||||||||
| 946 | ExprResult Sema::DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, | ||||||||
| 947 | FunctionDecl *FDecl) { | ||||||||
| 948 | if (const BuiltinType *PlaceholderTy = E->getType()->getAsPlaceholderType()) { | ||||||||
| 949 | // Strip the unbridged-cast placeholder expression off, if applicable. | ||||||||
| 950 | if (PlaceholderTy->getKind() == BuiltinType::ARCUnbridgedCast && | ||||||||
| 951 | (CT == VariadicMethod || | ||||||||
| 952 | (FDecl && FDecl->hasAttr<CFAuditedTransferAttr>()))) { | ||||||||
| 953 | E = stripARCUnbridgedCast(E); | ||||||||
| 954 | |||||||||
| 955 | // Otherwise, do normal placeholder checking. | ||||||||
| 956 | } else { | ||||||||
| 957 | ExprResult ExprRes = CheckPlaceholderExpr(E); | ||||||||
| 958 | if (ExprRes.isInvalid()) | ||||||||
| 959 | return ExprError(); | ||||||||
| 960 | E = ExprRes.get(); | ||||||||
| 961 | } | ||||||||
| 962 | } | ||||||||
| 963 | |||||||||
| 964 | ExprResult ExprRes = DefaultArgumentPromotion(E); | ||||||||
| 965 | if (ExprRes.isInvalid()) | ||||||||
| 966 | return ExprError(); | ||||||||
| 967 | |||||||||
| 968 | // Copy blocks to the heap. | ||||||||
| 969 | if (ExprRes.get()->getType()->isBlockPointerType()) | ||||||||
| 970 | maybeExtendBlockObject(ExprRes); | ||||||||
| 971 | |||||||||
| 972 | E = ExprRes.get(); | ||||||||
| 973 | |||||||||
| 974 | // Diagnostics regarding non-POD argument types are | ||||||||
| 975 | // emitted along with format string checking in Sema::CheckFunctionCall(). | ||||||||
| 976 | if (isValidVarArgType(E->getType()) == VAK_Undefined) { | ||||||||
| 977 | // Turn this into a trap. | ||||||||
| 978 | CXXScopeSpec SS; | ||||||||
| 979 | SourceLocation TemplateKWLoc; | ||||||||
| 980 | UnqualifiedId Name; | ||||||||
| 981 | Name.setIdentifier(PP.getIdentifierInfo("__builtin_trap"), | ||||||||
| 982 | E->getBeginLoc()); | ||||||||
| 983 | ExprResult TrapFn = ActOnIdExpression(TUScope, SS, TemplateKWLoc, Name, | ||||||||
| 984 | /*HasTrailingLParen=*/true, | ||||||||
| 985 | /*IsAddressOfOperand=*/false); | ||||||||
| 986 | if (TrapFn.isInvalid()) | ||||||||
| 987 | return ExprError(); | ||||||||
| 988 | |||||||||
| 989 | ExprResult Call = BuildCallExpr(TUScope, TrapFn.get(), E->getBeginLoc(), | ||||||||
| 990 | None, E->getEndLoc()); | ||||||||
| 991 | if (Call.isInvalid()) | ||||||||
| 992 | return ExprError(); | ||||||||
| 993 | |||||||||
| 994 | ExprResult Comma = | ||||||||
| 995 | ActOnBinOp(TUScope, E->getBeginLoc(), tok::comma, Call.get(), E); | ||||||||
| 996 | if (Comma.isInvalid()) | ||||||||
| 997 | return ExprError(); | ||||||||
| 998 | return Comma.get(); | ||||||||
| 999 | } | ||||||||
| 1000 | |||||||||
| 1001 | if (!getLangOpts().CPlusPlus && | ||||||||
| 1002 | RequireCompleteType(E->getExprLoc(), E->getType(), | ||||||||
| 1003 | diag::err_call_incomplete_argument)) | ||||||||
| 1004 | return ExprError(); | ||||||||
| 1005 | |||||||||
| 1006 | return E; | ||||||||
| 1007 | } | ||||||||
| 1008 | |||||||||
| 1009 | /// Converts an integer to complex float type. Helper function of | ||||||||
| 1010 | /// UsualArithmeticConversions() | ||||||||
| 1011 | /// | ||||||||
| 1012 | /// \return false if the integer expression is an integer type and is | ||||||||
| 1013 | /// successfully converted to the complex type. | ||||||||
| 1014 | static bool handleIntegerToComplexFloatConversion(Sema &S, ExprResult &IntExpr, | ||||||||
| 1015 | ExprResult &ComplexExpr, | ||||||||
| 1016 | QualType IntTy, | ||||||||
| 1017 | QualType ComplexTy, | ||||||||
| 1018 | bool SkipCast) { | ||||||||
| 1019 | if (IntTy->isComplexType() || IntTy->isRealFloatingType()) return true; | ||||||||
| 1020 | if (SkipCast) return false; | ||||||||
| 1021 | if (IntTy->isIntegerType()) { | ||||||||
| 1022 | QualType fpTy = cast<ComplexType>(ComplexTy)->getElementType(); | ||||||||
| 1023 | IntExpr = S.ImpCastExprToType(IntExpr.get(), fpTy, CK_IntegralToFloating); | ||||||||
| 1024 | IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, | ||||||||
| 1025 | CK_FloatingRealToComplex); | ||||||||
| 1026 | } else { | ||||||||
| 1027 | assert(IntTy->isComplexIntegerType())((IntTy->isComplexIntegerType()) ? static_cast<void> (0) : __assert_fail ("IntTy->isComplexIntegerType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1027, __PRETTY_FUNCTION__)); | ||||||||
| 1028 | IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, | ||||||||
| 1029 | CK_IntegralComplexToFloatingComplex); | ||||||||
| 1030 | } | ||||||||
| 1031 | return false; | ||||||||
| 1032 | } | ||||||||
| 1033 | |||||||||
| 1034 | /// Handle arithmetic conversion with complex types. Helper function of | ||||||||
| 1035 | /// UsualArithmeticConversions() | ||||||||
| 1036 | static QualType handleComplexFloatConversion(Sema &S, ExprResult &LHS, | ||||||||
| 1037 | ExprResult &RHS, QualType LHSType, | ||||||||
| 1038 | QualType RHSType, | ||||||||
| 1039 | bool IsCompAssign) { | ||||||||
| 1040 | // if we have an integer operand, the result is the complex type. | ||||||||
| 1041 | if (!handleIntegerToComplexFloatConversion(S, RHS, LHS, RHSType, LHSType, | ||||||||
| 1042 | /*skipCast*/false)) | ||||||||
| 1043 | return LHSType; | ||||||||
| 1044 | if (!handleIntegerToComplexFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||||||
| 1045 | /*skipCast*/IsCompAssign)) | ||||||||
| 1046 | return RHSType; | ||||||||
| 1047 | |||||||||
| 1048 | // This handles complex/complex, complex/float, or float/complex. | ||||||||
| 1049 | // When both operands are complex, the shorter operand is converted to the | ||||||||
| 1050 | // type of the longer, and that is the type of the result. This corresponds | ||||||||
| 1051 | // to what is done when combining two real floating-point operands. | ||||||||
| 1052 | // The fun begins when size promotion occur across type domains. | ||||||||
| 1053 | // From H&S 6.3.4: When one operand is complex and the other is a real | ||||||||
| 1054 | // floating-point type, the less precise type is converted, within it's | ||||||||
| 1055 | // real or complex domain, to the precision of the other type. For example, | ||||||||
| 1056 | // when combining a "long double" with a "double _Complex", the | ||||||||
| 1057 | // "double _Complex" is promoted to "long double _Complex". | ||||||||
| 1058 | |||||||||
| 1059 | // Compute the rank of the two types, regardless of whether they are complex. | ||||||||
| 1060 | int Order = S.Context.getFloatingTypeOrder(LHSType, RHSType); | ||||||||
| 1061 | |||||||||
| 1062 | auto *LHSComplexType = dyn_cast<ComplexType>(LHSType); | ||||||||
| 1063 | auto *RHSComplexType = dyn_cast<ComplexType>(RHSType); | ||||||||
| 1064 | QualType LHSElementType = | ||||||||
| 1065 | LHSComplexType ? LHSComplexType->getElementType() : LHSType; | ||||||||
| 1066 | QualType RHSElementType = | ||||||||
| 1067 | RHSComplexType ? RHSComplexType->getElementType() : RHSType; | ||||||||
| 1068 | |||||||||
| 1069 | QualType ResultType = S.Context.getComplexType(LHSElementType); | ||||||||
| 1070 | if (Order < 0) { | ||||||||
| 1071 | // Promote the precision of the LHS if not an assignment. | ||||||||
| 1072 | ResultType = S.Context.getComplexType(RHSElementType); | ||||||||
| 1073 | if (!IsCompAssign) { | ||||||||
| 1074 | if (LHSComplexType) | ||||||||
| 1075 | LHS = | ||||||||
| 1076 | S.ImpCastExprToType(LHS.get(), ResultType, CK_FloatingComplexCast); | ||||||||
| 1077 | else | ||||||||
| 1078 | LHS = S.ImpCastExprToType(LHS.get(), RHSElementType, CK_FloatingCast); | ||||||||
| 1079 | } | ||||||||
| 1080 | } else if (Order > 0) { | ||||||||
| 1081 | // Promote the precision of the RHS. | ||||||||
| 1082 | if (RHSComplexType) | ||||||||
| 1083 | RHS = S.ImpCastExprToType(RHS.get(), ResultType, CK_FloatingComplexCast); | ||||||||
| 1084 | else | ||||||||
| 1085 | RHS = S.ImpCastExprToType(RHS.get(), LHSElementType, CK_FloatingCast); | ||||||||
| 1086 | } | ||||||||
| 1087 | return ResultType; | ||||||||
| 1088 | } | ||||||||
| 1089 | |||||||||
| 1090 | /// Handle arithmetic conversion from integer to float. Helper function | ||||||||
| 1091 | /// of UsualArithmeticConversions() | ||||||||
| 1092 | static QualType handleIntToFloatConversion(Sema &S, ExprResult &FloatExpr, | ||||||||
| 1093 | ExprResult &IntExpr, | ||||||||
| 1094 | QualType FloatTy, QualType IntTy, | ||||||||
| 1095 | bool ConvertFloat, bool ConvertInt) { | ||||||||
| 1096 | if (IntTy->isIntegerType()) { | ||||||||
| 1097 | if (ConvertInt) | ||||||||
| 1098 | // Convert intExpr to the lhs floating point type. | ||||||||
| 1099 | IntExpr = S.ImpCastExprToType(IntExpr.get(), FloatTy, | ||||||||
| 1100 | CK_IntegralToFloating); | ||||||||
| 1101 | return FloatTy; | ||||||||
| 1102 | } | ||||||||
| 1103 | |||||||||
| 1104 | // Convert both sides to the appropriate complex float. | ||||||||
| 1105 | assert(IntTy->isComplexIntegerType())((IntTy->isComplexIntegerType()) ? static_cast<void> (0) : __assert_fail ("IntTy->isComplexIntegerType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1105, __PRETTY_FUNCTION__)); | ||||||||
| 1106 | QualType result = S.Context.getComplexType(FloatTy); | ||||||||
| 1107 | |||||||||
| 1108 | // _Complex int -> _Complex float | ||||||||
| 1109 | if (ConvertInt) | ||||||||
| 1110 | IntExpr = S.ImpCastExprToType(IntExpr.get(), result, | ||||||||
| 1111 | CK_IntegralComplexToFloatingComplex); | ||||||||
| 1112 | |||||||||
| 1113 | // float -> _Complex float | ||||||||
| 1114 | if (ConvertFloat) | ||||||||
| 1115 | FloatExpr = S.ImpCastExprToType(FloatExpr.get(), result, | ||||||||
| 1116 | CK_FloatingRealToComplex); | ||||||||
| 1117 | |||||||||
| 1118 | return result; | ||||||||
| 1119 | } | ||||||||
| 1120 | |||||||||
| 1121 | /// Handle arithmethic conversion with floating point types. Helper | ||||||||
| 1122 | /// function of UsualArithmeticConversions() | ||||||||
| 1123 | static QualType handleFloatConversion(Sema &S, ExprResult &LHS, | ||||||||
| 1124 | ExprResult &RHS, QualType LHSType, | ||||||||
| 1125 | QualType RHSType, bool IsCompAssign) { | ||||||||
| 1126 | bool LHSFloat = LHSType->isRealFloatingType(); | ||||||||
| 1127 | bool RHSFloat = RHSType->isRealFloatingType(); | ||||||||
| 1128 | |||||||||
| 1129 | // If we have two real floating types, convert the smaller operand | ||||||||
| 1130 | // to the bigger result. | ||||||||
| 1131 | if (LHSFloat && RHSFloat) { | ||||||||
| 1132 | int order = S.Context.getFloatingTypeOrder(LHSType, RHSType); | ||||||||
| 1133 | if (order > 0) { | ||||||||
| 1134 | RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FloatingCast); | ||||||||
| 1135 | return LHSType; | ||||||||
| 1136 | } | ||||||||
| 1137 | |||||||||
| 1138 | assert(order < 0 && "illegal float comparison")((order < 0 && "illegal float comparison") ? static_cast <void> (0) : __assert_fail ("order < 0 && \"illegal float comparison\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1138, __PRETTY_FUNCTION__)); | ||||||||
| 1139 | if (!IsCompAssign) | ||||||||
| 1140 | LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FloatingCast); | ||||||||
| 1141 | return RHSType; | ||||||||
| 1142 | } | ||||||||
| 1143 | |||||||||
| 1144 | if (LHSFloat) { | ||||||||
| 1145 | // Half FP has to be promoted to float unless it is natively supported | ||||||||
| 1146 | if (LHSType->isHalfType() && !S.getLangOpts().NativeHalfType) | ||||||||
| 1147 | LHSType = S.Context.FloatTy; | ||||||||
| 1148 | |||||||||
| 1149 | return handleIntToFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||||||
| 1150 | /*ConvertFloat=*/!IsCompAssign, | ||||||||
| 1151 | /*ConvertInt=*/ true); | ||||||||
| 1152 | } | ||||||||
| 1153 | assert(RHSFloat)((RHSFloat) ? static_cast<void> (0) : __assert_fail ("RHSFloat" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1153, __PRETTY_FUNCTION__)); | ||||||||
| 1154 | return handleIntToFloatConversion(S, RHS, LHS, RHSType, LHSType, | ||||||||
| 1155 | /*convertInt=*/ true, | ||||||||
| 1156 | /*convertFloat=*/!IsCompAssign); | ||||||||
| 1157 | } | ||||||||
| 1158 | |||||||||
| 1159 | /// Diagnose attempts to convert between __float128 and long double if | ||||||||
| 1160 | /// there is no support for such conversion. Helper function of | ||||||||
| 1161 | /// UsualArithmeticConversions(). | ||||||||
| 1162 | static bool unsupportedTypeConversion(const Sema &S, QualType LHSType, | ||||||||
| 1163 | QualType RHSType) { | ||||||||
| 1164 | /* No issue converting if at least one of the types is not a floating point | ||||||||
| 1165 | type or the two types have the same rank. | ||||||||
| 1166 | */ | ||||||||
| 1167 | if (!LHSType->isFloatingType() || !RHSType->isFloatingType() || | ||||||||
| 1168 | S.Context.getFloatingTypeOrder(LHSType, RHSType) == 0) | ||||||||
| 1169 | return false; | ||||||||
| 1170 | |||||||||
| 1171 | assert(LHSType->isFloatingType() && RHSType->isFloatingType() &&((LHSType->isFloatingType() && RHSType->isFloatingType () && "The remaining types must be floating point types." ) ? static_cast<void> (0) : __assert_fail ("LHSType->isFloatingType() && RHSType->isFloatingType() && \"The remaining types must be floating point types.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1172, __PRETTY_FUNCTION__)) | ||||||||
| 1172 | "The remaining types must be floating point types.")((LHSType->isFloatingType() && RHSType->isFloatingType () && "The remaining types must be floating point types." ) ? static_cast<void> (0) : __assert_fail ("LHSType->isFloatingType() && RHSType->isFloatingType() && \"The remaining types must be floating point types.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1172, __PRETTY_FUNCTION__)); | ||||||||
| 1173 | |||||||||
| 1174 | auto *LHSComplex = LHSType->getAs<ComplexType>(); | ||||||||
| 1175 | auto *RHSComplex = RHSType->getAs<ComplexType>(); | ||||||||
| 1176 | |||||||||
| 1177 | QualType LHSElemType = LHSComplex
| ||||||||
| 1178 | LHSComplex->getElementType() : LHSType; | ||||||||
| 1179 | QualType RHSElemType = RHSComplex
| ||||||||
| 1180 | RHSComplex->getElementType() : RHSType; | ||||||||
| 1181 | |||||||||
| 1182 | // No issue if the two types have the same representation | ||||||||
| 1183 | if (&S.Context.getFloatTypeSemantics(LHSElemType) == | ||||||||
| 1184 | &S.Context.getFloatTypeSemantics(RHSElemType)) | ||||||||
| 1185 | return false; | ||||||||
| 1186 | |||||||||
| 1187 | bool Float128AndLongDouble = (LHSElemType == S.Context.Float128Ty && | ||||||||
| 1188 | RHSElemType == S.Context.LongDoubleTy); | ||||||||
| 1189 | Float128AndLongDouble |= (LHSElemType == S.Context.LongDoubleTy && | ||||||||
| 1190 | RHSElemType == S.Context.Float128Ty); | ||||||||
| 1191 | |||||||||
| 1192 | // We've handled the situation where __float128 and long double have the same | ||||||||
| 1193 | // representation. We allow all conversions for all possible long double types | ||||||||
| 1194 | // except PPC's double double. | ||||||||
| 1195 | return Float128AndLongDouble
| ||||||||
| 1196 | (&S.Context.getFloatTypeSemantics(S.Context.LongDoubleTy) == | ||||||||
| 1197 | &llvm::APFloat::PPCDoubleDouble()); | ||||||||
| 1198 | } | ||||||||
| 1199 | |||||||||
| 1200 | typedef ExprResult PerformCastFn(Sema &S, Expr *operand, QualType toType); | ||||||||
| 1201 | |||||||||
| 1202 | namespace { | ||||||||
| 1203 | /// These helper callbacks are placed in an anonymous namespace to | ||||||||
| 1204 | /// permit their use as function template parameters. | ||||||||
| 1205 | ExprResult doIntegralCast(Sema &S, Expr *op, QualType toType) { | ||||||||
| 1206 | return S.ImpCastExprToType(op, toType, CK_IntegralCast); | ||||||||
| 1207 | } | ||||||||
| 1208 | |||||||||
| 1209 | ExprResult doComplexIntegralCast(Sema &S, Expr *op, QualType toType) { | ||||||||
| 1210 | return S.ImpCastExprToType(op, S.Context.getComplexType(toType), | ||||||||
| 1211 | CK_IntegralComplexCast); | ||||||||
| 1212 | } | ||||||||
| 1213 | } | ||||||||
| 1214 | |||||||||
| 1215 | /// Handle integer arithmetic conversions. Helper function of | ||||||||
| 1216 | /// UsualArithmeticConversions() | ||||||||
| 1217 | template <PerformCastFn doLHSCast, PerformCastFn doRHSCast> | ||||||||
| 1218 | static QualType handleIntegerConversion(Sema &S, ExprResult &LHS, | ||||||||
| 1219 | ExprResult &RHS, QualType LHSType, | ||||||||
| 1220 | QualType RHSType, bool IsCompAssign) { | ||||||||
| 1221 | // The rules for this case are in C99 6.3.1.8 | ||||||||
| 1222 | int order = S.Context.getIntegerTypeOrder(LHSType, RHSType); | ||||||||
| 1223 | bool LHSSigned = LHSType->hasSignedIntegerRepresentation(); | ||||||||
| 1224 | bool RHSSigned = RHSType->hasSignedIntegerRepresentation(); | ||||||||
| 1225 | if (LHSSigned == RHSSigned) { | ||||||||
| 1226 | // Same signedness; use the higher-ranked type | ||||||||
| 1227 | if (order >= 0) { | ||||||||
| 1228 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||||||
| 1229 | return LHSType; | ||||||||
| 1230 | } else if (!IsCompAssign) | ||||||||
| 1231 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||||||
| 1232 | return RHSType; | ||||||||
| 1233 | } else if (order != (LHSSigned ? 1 : -1)) { | ||||||||
| 1234 | // The unsigned type has greater than or equal rank to the | ||||||||
| 1235 | // signed type, so use the unsigned type | ||||||||
| 1236 | if (RHSSigned) { | ||||||||
| 1237 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||||||
| 1238 | return LHSType; | ||||||||
| 1239 | } else if (!IsCompAssign) | ||||||||
| 1240 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||||||
| 1241 | return RHSType; | ||||||||
| 1242 | } else if (S.Context.getIntWidth(LHSType) != S.Context.getIntWidth(RHSType)) { | ||||||||
| 1243 | // The two types are different widths; if we are here, that | ||||||||
| 1244 | // means the signed type is larger than the unsigned type, so | ||||||||
| 1245 | // use the signed type. | ||||||||
| 1246 | if (LHSSigned) { | ||||||||
| 1247 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||||||
| 1248 | return LHSType; | ||||||||
| 1249 | } else if (!IsCompAssign) | ||||||||
| 1250 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||||||
| 1251 | return RHSType; | ||||||||
| 1252 | } else { | ||||||||
| 1253 | // The signed type is higher-ranked than the unsigned type, | ||||||||
| 1254 | // but isn't actually any bigger (like unsigned int and long | ||||||||
| 1255 | // on most 32-bit systems). Use the unsigned type corresponding | ||||||||
| 1256 | // to the signed type. | ||||||||
| 1257 | QualType result = | ||||||||
| 1258 | S.Context.getCorrespondingUnsignedType(LHSSigned ? LHSType : RHSType); | ||||||||
| 1259 | RHS = (*doRHSCast)(S, RHS.get(), result); | ||||||||
| 1260 | if (!IsCompAssign) | ||||||||
| 1261 | LHS = (*doLHSCast)(S, LHS.get(), result); | ||||||||
| 1262 | return result; | ||||||||
| 1263 | } | ||||||||
| 1264 | } | ||||||||
| 1265 | |||||||||
| 1266 | /// Handle conversions with GCC complex int extension. Helper function | ||||||||
| 1267 | /// of UsualArithmeticConversions() | ||||||||
| 1268 | static QualType handleComplexIntConversion(Sema &S, ExprResult &LHS, | ||||||||
| 1269 | ExprResult &RHS, QualType LHSType, | ||||||||
| 1270 | QualType RHSType, | ||||||||
| 1271 | bool IsCompAssign) { | ||||||||
| 1272 | const ComplexType *LHSComplexInt = LHSType->getAsComplexIntegerType(); | ||||||||
| 1273 | const ComplexType *RHSComplexInt = RHSType->getAsComplexIntegerType(); | ||||||||
| 1274 | |||||||||
| 1275 | if (LHSComplexInt && RHSComplexInt) { | ||||||||
| 1276 | QualType LHSEltType = LHSComplexInt->getElementType(); | ||||||||
| 1277 | QualType RHSEltType = RHSComplexInt->getElementType(); | ||||||||
| 1278 | QualType ScalarType = | ||||||||
| 1279 | handleIntegerConversion<doComplexIntegralCast, doComplexIntegralCast> | ||||||||
| 1280 | (S, LHS, RHS, LHSEltType, RHSEltType, IsCompAssign); | ||||||||
| 1281 | |||||||||
| 1282 | return S.Context.getComplexType(ScalarType); | ||||||||
| 1283 | } | ||||||||
| 1284 | |||||||||
| 1285 | if (LHSComplexInt) { | ||||||||
| 1286 | QualType LHSEltType = LHSComplexInt->getElementType(); | ||||||||
| 1287 | QualType ScalarType = | ||||||||
| 1288 | handleIntegerConversion<doComplexIntegralCast, doIntegralCast> | ||||||||
| 1289 | (S, LHS, RHS, LHSEltType, RHSType, IsCompAssign); | ||||||||
| 1290 | QualType ComplexType = S.Context.getComplexType(ScalarType); | ||||||||
| 1291 | RHS = S.ImpCastExprToType(RHS.get(), ComplexType, | ||||||||
| 1292 | CK_IntegralRealToComplex); | ||||||||
| 1293 | |||||||||
| 1294 | return ComplexType; | ||||||||
| 1295 | } | ||||||||
| 1296 | |||||||||
| 1297 | assert(RHSComplexInt)((RHSComplexInt) ? static_cast<void> (0) : __assert_fail ("RHSComplexInt", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1297, __PRETTY_FUNCTION__)); | ||||||||
| 1298 | |||||||||
| 1299 | QualType RHSEltType = RHSComplexInt->getElementType(); | ||||||||
| 1300 | QualType ScalarType = | ||||||||
| 1301 | handleIntegerConversion<doIntegralCast, doComplexIntegralCast> | ||||||||
| 1302 | (S, LHS, RHS, LHSType, RHSEltType, IsCompAssign); | ||||||||
| 1303 | QualType ComplexType = S.Context.getComplexType(ScalarType); | ||||||||
| 1304 | |||||||||
| 1305 | if (!IsCompAssign) | ||||||||
| 1306 | LHS = S.ImpCastExprToType(LHS.get(), ComplexType, | ||||||||
| 1307 | CK_IntegralRealToComplex); | ||||||||
| 1308 | return ComplexType; | ||||||||
| 1309 | } | ||||||||
| 1310 | |||||||||
| 1311 | /// Return the rank of a given fixed point or integer type. The value itself | ||||||||
| 1312 | /// doesn't matter, but the values must be increasing with proper increasing | ||||||||
| 1313 | /// rank as described in N1169 4.1.1. | ||||||||
| 1314 | static unsigned GetFixedPointRank(QualType Ty) { | ||||||||
| 1315 | const auto *BTy = Ty->getAs<BuiltinType>(); | ||||||||
| 1316 | assert(BTy && "Expected a builtin type.")((BTy && "Expected a builtin type.") ? static_cast< void> (0) : __assert_fail ("BTy && \"Expected a builtin type.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1316, __PRETTY_FUNCTION__)); | ||||||||
| 1317 | |||||||||
| 1318 | switch (BTy->getKind()) { | ||||||||
| 1319 | case BuiltinType::ShortFract: | ||||||||
| 1320 | case BuiltinType::UShortFract: | ||||||||
| 1321 | case BuiltinType::SatShortFract: | ||||||||
| 1322 | case BuiltinType::SatUShortFract: | ||||||||
| 1323 | return 1; | ||||||||
| 1324 | case BuiltinType::Fract: | ||||||||
| 1325 | case BuiltinType::UFract: | ||||||||
| 1326 | case BuiltinType::SatFract: | ||||||||
| 1327 | case BuiltinType::SatUFract: | ||||||||
| 1328 | return 2; | ||||||||
| 1329 | case BuiltinType::LongFract: | ||||||||
| 1330 | case BuiltinType::ULongFract: | ||||||||
| 1331 | case BuiltinType::SatLongFract: | ||||||||
| 1332 | case BuiltinType::SatULongFract: | ||||||||
| 1333 | return 3; | ||||||||
| 1334 | case BuiltinType::ShortAccum: | ||||||||
| 1335 | case BuiltinType::UShortAccum: | ||||||||
| 1336 | case BuiltinType::SatShortAccum: | ||||||||
| 1337 | case BuiltinType::SatUShortAccum: | ||||||||
| 1338 | return 4; | ||||||||
| 1339 | case BuiltinType::Accum: | ||||||||
| 1340 | case BuiltinType::UAccum: | ||||||||
| 1341 | case BuiltinType::SatAccum: | ||||||||
| 1342 | case BuiltinType::SatUAccum: | ||||||||
| 1343 | return 5; | ||||||||
| 1344 | case BuiltinType::LongAccum: | ||||||||
| 1345 | case BuiltinType::ULongAccum: | ||||||||
| 1346 | case BuiltinType::SatLongAccum: | ||||||||
| 1347 | case BuiltinType::SatULongAccum: | ||||||||
| 1348 | return 6; | ||||||||
| 1349 | default: | ||||||||
| 1350 | if (BTy->isInteger()) | ||||||||
| 1351 | return 0; | ||||||||
| 1352 | llvm_unreachable("Unexpected fixed point or integer type")::llvm::llvm_unreachable_internal("Unexpected fixed point or integer type" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1352); | ||||||||
| 1353 | } | ||||||||
| 1354 | } | ||||||||
| 1355 | |||||||||
| 1356 | /// handleFixedPointConversion - Fixed point operations between fixed | ||||||||
| 1357 | /// point types and integers or other fixed point types do not fall under | ||||||||
| 1358 | /// usual arithmetic conversion since these conversions could result in loss | ||||||||
| 1359 | /// of precsision (N1169 4.1.4). These operations should be calculated with | ||||||||
| 1360 | /// the full precision of their result type (N1169 4.1.6.2.1). | ||||||||
| 1361 | static QualType handleFixedPointConversion(Sema &S, QualType LHSTy, | ||||||||
| 1362 | QualType RHSTy) { | ||||||||
| 1363 | assert((LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) &&(((LHSTy->isFixedPointType() || RHSTy->isFixedPointType ()) && "Expected at least one of the operands to be a fixed point type" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1364, __PRETTY_FUNCTION__)) | ||||||||
| 1364 | "Expected at least one of the operands to be a fixed point type")(((LHSTy->isFixedPointType() || RHSTy->isFixedPointType ()) && "Expected at least one of the operands to be a fixed point type" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1364, __PRETTY_FUNCTION__)); | ||||||||
| 1365 | assert((LHSTy->isFixedPointOrIntegerType() ||(((LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType ()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1368, __PRETTY_FUNCTION__)) | ||||||||
| 1366 | RHSTy->isFixedPointOrIntegerType()) &&(((LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType ()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1368, __PRETTY_FUNCTION__)) | ||||||||
| 1367 | "Special fixed point arithmetic operation conversions are only "(((LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType ()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1368, __PRETTY_FUNCTION__)) | ||||||||
| 1368 | "applied to ints or other fixed point types")(((LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType ()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1368, __PRETTY_FUNCTION__)); | ||||||||
| 1369 | |||||||||
| 1370 | // If one operand has signed fixed-point type and the other operand has | ||||||||
| 1371 | // unsigned fixed-point type, then the unsigned fixed-point operand is | ||||||||
| 1372 | // converted to its corresponding signed fixed-point type and the resulting | ||||||||
| 1373 | // type is the type of the converted operand. | ||||||||
| 1374 | if (RHSTy->isSignedFixedPointType() && LHSTy->isUnsignedFixedPointType()) | ||||||||
| 1375 | LHSTy = S.Context.getCorrespondingSignedFixedPointType(LHSTy); | ||||||||
| 1376 | else if (RHSTy->isUnsignedFixedPointType() && LHSTy->isSignedFixedPointType()) | ||||||||
| 1377 | RHSTy = S.Context.getCorrespondingSignedFixedPointType(RHSTy); | ||||||||
| 1378 | |||||||||
| 1379 | // The result type is the type with the highest rank, whereby a fixed-point | ||||||||
| 1380 | // conversion rank is always greater than an integer conversion rank; if the | ||||||||
| 1381 | // type of either of the operands is a saturating fixedpoint type, the result | ||||||||
| 1382 | // type shall be the saturating fixed-point type corresponding to the type | ||||||||
| 1383 | // with the highest rank; the resulting value is converted (taking into | ||||||||
| 1384 | // account rounding and overflow) to the precision of the resulting type. | ||||||||
| 1385 | // Same ranks between signed and unsigned types are resolved earlier, so both | ||||||||
| 1386 | // types are either signed or both unsigned at this point. | ||||||||
| 1387 | unsigned LHSTyRank = GetFixedPointRank(LHSTy); | ||||||||
| 1388 | unsigned RHSTyRank = GetFixedPointRank(RHSTy); | ||||||||
| 1389 | |||||||||
| 1390 | QualType ResultTy = LHSTyRank > RHSTyRank ? LHSTy : RHSTy; | ||||||||
| 1391 | |||||||||
| 1392 | if (LHSTy->isSaturatedFixedPointType() || RHSTy->isSaturatedFixedPointType()) | ||||||||
| 1393 | ResultTy = S.Context.getCorrespondingSaturatedType(ResultTy); | ||||||||
| 1394 | |||||||||
| 1395 | return ResultTy; | ||||||||
| 1396 | } | ||||||||
| 1397 | |||||||||
| 1398 | /// Check that the usual arithmetic conversions can be performed on this pair of | ||||||||
| 1399 | /// expressions that might be of enumeration type. | ||||||||
| 1400 | static void checkEnumArithmeticConversions(Sema &S, Expr *LHS, Expr *RHS, | ||||||||
| 1401 | SourceLocation Loc, | ||||||||
| 1402 | Sema::ArithConvKind ACK) { | ||||||||
| 1403 | // C++2a [expr.arith.conv]p1: | ||||||||
| 1404 | // If one operand is of enumeration type and the other operand is of a | ||||||||
| 1405 | // different enumeration type or a floating-point type, this behavior is | ||||||||
| 1406 | // deprecated ([depr.arith.conv.enum]). | ||||||||
| 1407 | // | ||||||||
| 1408 | // Warn on this in all language modes. Produce a deprecation warning in C++20. | ||||||||
| 1409 | // Eventually we will presumably reject these cases (in C++23 onwards?). | ||||||||
| 1410 | QualType L = LHS->getType(), R = RHS->getType(); | ||||||||
| 1411 | bool LEnum = L->isUnscopedEnumerationType(), | ||||||||
| 1412 | REnum = R->isUnscopedEnumerationType(); | ||||||||
| 1413 | bool IsCompAssign = ACK == Sema::ACK_CompAssign; | ||||||||
| 1414 | if ((!IsCompAssign && LEnum && R->isFloatingType()) || | ||||||||
| 1415 | (REnum && L->isFloatingType())) { | ||||||||
| 1416 | S.Diag(Loc, S.getLangOpts().CPlusPlus20 | ||||||||
| 1417 | ? diag::warn_arith_conv_enum_float_cxx20 | ||||||||
| 1418 | : diag::warn_arith_conv_enum_float) | ||||||||
| 1419 | << LHS->getSourceRange() << RHS->getSourceRange() | ||||||||
| 1420 | << (int)ACK << LEnum << L << R; | ||||||||
| 1421 | } else if (!IsCompAssign && LEnum && REnum && | ||||||||
| 1422 | !S.Context.hasSameUnqualifiedType(L, R)) { | ||||||||
| 1423 | unsigned DiagID; | ||||||||
| 1424 | if (!L->castAs<EnumType>()->getDecl()->hasNameForLinkage() || | ||||||||
| 1425 | !R->castAs<EnumType>()->getDecl()->hasNameForLinkage()) { | ||||||||
| 1426 | // If either enumeration type is unnamed, it's less likely that the | ||||||||
| 1427 | // user cares about this, but this situation is still deprecated in | ||||||||
| 1428 | // C++2a. Use a different warning group. | ||||||||
| 1429 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
| 1430 | ? diag::warn_arith_conv_mixed_anon_enum_types_cxx20 | ||||||||
| 1431 | : diag::warn_arith_conv_mixed_anon_enum_types; | ||||||||
| 1432 | } else if (ACK == Sema::ACK_Conditional) { | ||||||||
| 1433 | // Conditional expressions are separated out because they have | ||||||||
| 1434 | // historically had a different warning flag. | ||||||||
| 1435 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
| 1436 | ? diag::warn_conditional_mixed_enum_types_cxx20 | ||||||||
| 1437 | : diag::warn_conditional_mixed_enum_types; | ||||||||
| 1438 | } else if (ACK == Sema::ACK_Comparison) { | ||||||||
| 1439 | // Comparison expressions are separated out because they have | ||||||||
| 1440 | // historically had a different warning flag. | ||||||||
| 1441 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
| 1442 | ? diag::warn_comparison_mixed_enum_types_cxx20 | ||||||||
| 1443 | : diag::warn_comparison_mixed_enum_types; | ||||||||
| 1444 | } else { | ||||||||
| 1445 | DiagID = S.getLangOpts().CPlusPlus20 | ||||||||
| 1446 | ? diag::warn_arith_conv_mixed_enum_types_cxx20 | ||||||||
| 1447 | : diag::warn_arith_conv_mixed_enum_types; | ||||||||
| 1448 | } | ||||||||
| 1449 | S.Diag(Loc, DiagID) << LHS->getSourceRange() << RHS->getSourceRange() | ||||||||
| 1450 | << (int)ACK << L << R; | ||||||||
| 1451 | } | ||||||||
| 1452 | } | ||||||||
| 1453 | |||||||||
| 1454 | /// UsualArithmeticConversions - Performs various conversions that are common to | ||||||||
| 1455 | /// binary operators (C99 6.3.1.8). If both operands aren't arithmetic, this | ||||||||
| 1456 | /// routine returns the first non-arithmetic type found. The client is | ||||||||
| 1457 | /// responsible for emitting appropriate error diagnostics. | ||||||||
| 1458 | QualType Sema::UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 1459 | SourceLocation Loc, | ||||||||
| 1460 | ArithConvKind ACK) { | ||||||||
| 1461 | checkEnumArithmeticConversions(*this, LHS.get(), RHS.get(), Loc, ACK); | ||||||||
| 1462 | |||||||||
| 1463 | if (ACK != ACK_CompAssign) { | ||||||||
| 1464 | LHS = UsualUnaryConversions(LHS.get()); | ||||||||
| 1465 | if (LHS.isInvalid()) | ||||||||
| 1466 | return QualType(); | ||||||||
| 1467 | } | ||||||||
| 1468 | |||||||||
| 1469 | RHS = UsualUnaryConversions(RHS.get()); | ||||||||
| 1470 | if (RHS.isInvalid()) | ||||||||
| 1471 | return QualType(); | ||||||||
| 1472 | |||||||||
| 1473 | // For conversion purposes, we ignore any qualifiers. | ||||||||
| 1474 | // For example, "const float" and "float" are equivalent. | ||||||||
| 1475 | QualType LHSType = | ||||||||
| 1476 | Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); | ||||||||
| 1477 | QualType RHSType = | ||||||||
| 1478 | Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); | ||||||||
| 1479 | |||||||||
| 1480 | // For conversion purposes, we ignore any atomic qualifier on the LHS. | ||||||||
| 1481 | if (const AtomicType *AtomicLHS = LHSType->getAs<AtomicType>()) | ||||||||
| 1482 | LHSType = AtomicLHS->getValueType(); | ||||||||
| 1483 | |||||||||
| 1484 | // If both types are identical, no conversion is needed. | ||||||||
| 1485 | if (LHSType == RHSType) | ||||||||
| 1486 | return LHSType; | ||||||||
| 1487 | |||||||||
| 1488 | // If either side is a non-arithmetic type (e.g. a pointer), we are done. | ||||||||
| 1489 | // The caller can deal with this (e.g. pointer + int). | ||||||||
| 1490 | if (!LHSType->isArithmeticType() || !RHSType->isArithmeticType()) | ||||||||
| 1491 | return QualType(); | ||||||||
| 1492 | |||||||||
| 1493 | // Apply unary and bitfield promotions to the LHS's type. | ||||||||
| 1494 | QualType LHSUnpromotedType = LHSType; | ||||||||
| 1495 | if (LHSType->isPromotableIntegerType()) | ||||||||
| 1496 | LHSType = Context.getPromotedIntegerType(LHSType); | ||||||||
| 1497 | QualType LHSBitfieldPromoteTy = Context.isPromotableBitField(LHS.get()); | ||||||||
| 1498 | if (!LHSBitfieldPromoteTy.isNull()) | ||||||||
| 1499 | LHSType = LHSBitfieldPromoteTy; | ||||||||
| 1500 | if (LHSType != LHSUnpromotedType && ACK != ACK_CompAssign) | ||||||||
| 1501 | LHS = ImpCastExprToType(LHS.get(), LHSType, CK_IntegralCast); | ||||||||
| 1502 | |||||||||
| 1503 | // If both types are identical, no conversion is needed. | ||||||||
| 1504 | if (LHSType == RHSType) | ||||||||
| 1505 | return LHSType; | ||||||||
| 1506 | |||||||||
| 1507 | // ExtInt types aren't subject to conversions between them or normal integers, | ||||||||
| 1508 | // so this fails. | ||||||||
| 1509 | if(LHSType->isExtIntType() || RHSType->isExtIntType()) | ||||||||
| 1510 | return QualType(); | ||||||||
| 1511 | |||||||||
| 1512 | // At this point, we have two different arithmetic types. | ||||||||
| 1513 | |||||||||
| 1514 | // Diagnose attempts to convert between __float128 and long double where | ||||||||
| 1515 | // such conversions currently can't be handled. | ||||||||
| 1516 | if (unsupportedTypeConversion(*this, LHSType, RHSType)) | ||||||||
| 1517 | return QualType(); | ||||||||
| 1518 | |||||||||
| 1519 | // Handle complex types first (C99 6.3.1.8p1). | ||||||||
| 1520 | if (LHSType->isComplexType() || RHSType->isComplexType()) | ||||||||
| 1521 | return handleComplexFloatConversion(*this, LHS, RHS, LHSType, RHSType, | ||||||||
| 1522 | ACK == ACK_CompAssign); | ||||||||
| 1523 | |||||||||
| 1524 | // Now handle "real" floating types (i.e. float, double, long double). | ||||||||
| 1525 | if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) | ||||||||
| 1526 | return handleFloatConversion(*this, LHS, RHS, LHSType, RHSType, | ||||||||
| 1527 | ACK == ACK_CompAssign); | ||||||||
| 1528 | |||||||||
| 1529 | // Handle GCC complex int extension. | ||||||||
| 1530 | if (LHSType->isComplexIntegerType() || RHSType->isComplexIntegerType()) | ||||||||
| 1531 | return handleComplexIntConversion(*this, LHS, RHS, LHSType, RHSType, | ||||||||
| 1532 | ACK == ACK_CompAssign); | ||||||||
| 1533 | |||||||||
| 1534 | if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) | ||||||||
| 1535 | return handleFixedPointConversion(*this, LHSType, RHSType); | ||||||||
| 1536 | |||||||||
| 1537 | // Finally, we have two differing integer types. | ||||||||
| 1538 | return handleIntegerConversion<doIntegralCast, doIntegralCast> | ||||||||
| 1539 | (*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); | ||||||||
| 1540 | } | ||||||||
| 1541 | |||||||||
| 1542 | //===----------------------------------------------------------------------===// | ||||||||
| 1543 | // Semantic Analysis for various Expression Types | ||||||||
| 1544 | //===----------------------------------------------------------------------===// | ||||||||
| 1545 | |||||||||
| 1546 | |||||||||
| 1547 | ExprResult | ||||||||
| 1548 | Sema::ActOnGenericSelectionExpr(SourceLocation KeyLoc, | ||||||||
| 1549 | SourceLocation DefaultLoc, | ||||||||
| 1550 | SourceLocation RParenLoc, | ||||||||
| 1551 | Expr *ControllingExpr, | ||||||||
| 1552 | ArrayRef<ParsedType> ArgTypes, | ||||||||
| 1553 | ArrayRef<Expr *> ArgExprs) { | ||||||||
| 1554 | unsigned NumAssocs = ArgTypes.size(); | ||||||||
| 1555 | assert(NumAssocs == ArgExprs.size())((NumAssocs == ArgExprs.size()) ? static_cast<void> (0) : __assert_fail ("NumAssocs == ArgExprs.size()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1555, __PRETTY_FUNCTION__)); | ||||||||
| 1556 | |||||||||
| 1557 | TypeSourceInfo **Types = new TypeSourceInfo*[NumAssocs]; | ||||||||
| 1558 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||||||
| 1559 | if (ArgTypes[i]) | ||||||||
| 1560 | (void) GetTypeFromParser(ArgTypes[i], &Types[i]); | ||||||||
| 1561 | else | ||||||||
| 1562 | Types[i] = nullptr; | ||||||||
| 1563 | } | ||||||||
| 1564 | |||||||||
| 1565 | ExprResult ER = CreateGenericSelectionExpr(KeyLoc, DefaultLoc, RParenLoc, | ||||||||
| 1566 | ControllingExpr, | ||||||||
| 1567 | llvm::makeArrayRef(Types, NumAssocs), | ||||||||
| 1568 | ArgExprs); | ||||||||
| 1569 | delete [] Types; | ||||||||
| 1570 | return ER; | ||||||||
| 1571 | } | ||||||||
| 1572 | |||||||||
| 1573 | ExprResult | ||||||||
| 1574 | Sema::CreateGenericSelectionExpr(SourceLocation KeyLoc, | ||||||||
| 1575 | SourceLocation DefaultLoc, | ||||||||
| 1576 | SourceLocation RParenLoc, | ||||||||
| 1577 | Expr *ControllingExpr, | ||||||||
| 1578 | ArrayRef<TypeSourceInfo *> Types, | ||||||||
| 1579 | ArrayRef<Expr *> Exprs) { | ||||||||
| 1580 | unsigned NumAssocs = Types.size(); | ||||||||
| 1581 | assert(NumAssocs == Exprs.size())((NumAssocs == Exprs.size()) ? static_cast<void> (0) : __assert_fail ("NumAssocs == Exprs.size()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1581, __PRETTY_FUNCTION__)); | ||||||||
| 1582 | |||||||||
| 1583 | // Decay and strip qualifiers for the controlling expression type, and handle | ||||||||
| 1584 | // placeholder type replacement. See committee discussion from WG14 DR423. | ||||||||
| 1585 | { | ||||||||
| 1586 | EnterExpressionEvaluationContext Unevaluated( | ||||||||
| 1587 | *this, Sema::ExpressionEvaluationContext::Unevaluated); | ||||||||
| 1588 | ExprResult R = DefaultFunctionArrayLvalueConversion(ControllingExpr); | ||||||||
| 1589 | if (R.isInvalid()) | ||||||||
| 1590 | return ExprError(); | ||||||||
| 1591 | ControllingExpr = R.get(); | ||||||||
| 1592 | } | ||||||||
| 1593 | |||||||||
| 1594 | // The controlling expression is an unevaluated operand, so side effects are | ||||||||
| 1595 | // likely unintended. | ||||||||
| 1596 | if (!inTemplateInstantiation() && | ||||||||
| 1597 | ControllingExpr->HasSideEffects(Context, false)) | ||||||||
| 1598 | Diag(ControllingExpr->getExprLoc(), | ||||||||
| 1599 | diag::warn_side_effects_unevaluated_context); | ||||||||
| 1600 | |||||||||
| 1601 | bool TypeErrorFound = false, | ||||||||
| 1602 | IsResultDependent = ControllingExpr->isTypeDependent(), | ||||||||
| 1603 | ContainsUnexpandedParameterPack | ||||||||
| 1604 | = ControllingExpr->containsUnexpandedParameterPack(); | ||||||||
| 1605 | |||||||||
| 1606 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||||||
| 1607 | if (Exprs[i]->containsUnexpandedParameterPack()) | ||||||||
| 1608 | ContainsUnexpandedParameterPack = true; | ||||||||
| 1609 | |||||||||
| 1610 | if (Types[i]) { | ||||||||
| 1611 | if (Types[i]->getType()->containsUnexpandedParameterPack()) | ||||||||
| 1612 | ContainsUnexpandedParameterPack = true; | ||||||||
| 1613 | |||||||||
| 1614 | if (Types[i]->getType()->isDependentType()) { | ||||||||
| 1615 | IsResultDependent = true; | ||||||||
| 1616 | } else { | ||||||||
| 1617 | // C11 6.5.1.1p2 "The type name in a generic association shall specify a | ||||||||
| 1618 | // complete object type other than a variably modified type." | ||||||||
| 1619 | unsigned D = 0; | ||||||||
| 1620 | if (Types[i]->getType()->isIncompleteType()) | ||||||||
| 1621 | D = diag::err_assoc_type_incomplete; | ||||||||
| 1622 | else if (!Types[i]->getType()->isObjectType()) | ||||||||
| 1623 | D = diag::err_assoc_type_nonobject; | ||||||||
| 1624 | else if (Types[i]->getType()->isVariablyModifiedType()) | ||||||||
| 1625 | D = diag::err_assoc_type_variably_modified; | ||||||||
| 1626 | |||||||||
| 1627 | if (D != 0) { | ||||||||
| 1628 | Diag(Types[i]->getTypeLoc().getBeginLoc(), D) | ||||||||
| 1629 | << Types[i]->getTypeLoc().getSourceRange() | ||||||||
| 1630 | << Types[i]->getType(); | ||||||||
| 1631 | TypeErrorFound = true; | ||||||||
| 1632 | } | ||||||||
| 1633 | |||||||||
| 1634 | // C11 6.5.1.1p2 "No two generic associations in the same generic | ||||||||
| 1635 | // selection shall specify compatible types." | ||||||||
| 1636 | for (unsigned j = i+1; j < NumAssocs; ++j) | ||||||||
| 1637 | if (Types[j] && !Types[j]->getType()->isDependentType() && | ||||||||
| 1638 | Context.typesAreCompatible(Types[i]->getType(), | ||||||||
| 1639 | Types[j]->getType())) { | ||||||||
| 1640 | Diag(Types[j]->getTypeLoc().getBeginLoc(), | ||||||||
| 1641 | diag::err_assoc_compatible_types) | ||||||||
| 1642 | << Types[j]->getTypeLoc().getSourceRange() | ||||||||
| 1643 | << Types[j]->getType() | ||||||||
| 1644 | << Types[i]->getType(); | ||||||||
| 1645 | Diag(Types[i]->getTypeLoc().getBeginLoc(), | ||||||||
| 1646 | diag::note_compat_assoc) | ||||||||
| 1647 | << Types[i]->getTypeLoc().getSourceRange() | ||||||||
| 1648 | << Types[i]->getType(); | ||||||||
| 1649 | TypeErrorFound = true; | ||||||||
| 1650 | } | ||||||||
| 1651 | } | ||||||||
| 1652 | } | ||||||||
| 1653 | } | ||||||||
| 1654 | if (TypeErrorFound) | ||||||||
| 1655 | return ExprError(); | ||||||||
| 1656 | |||||||||
| 1657 | // If we determined that the generic selection is result-dependent, don't | ||||||||
| 1658 | // try to compute the result expression. | ||||||||
| 1659 | if (IsResultDependent) | ||||||||
| 1660 | return GenericSelectionExpr::Create(Context, KeyLoc, ControllingExpr, Types, | ||||||||
| 1661 | Exprs, DefaultLoc, RParenLoc, | ||||||||
| 1662 | ContainsUnexpandedParameterPack); | ||||||||
| 1663 | |||||||||
| 1664 | SmallVector<unsigned, 1> CompatIndices; | ||||||||
| 1665 | unsigned DefaultIndex = -1U; | ||||||||
| 1666 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||||||
| 1667 | if (!Types[i]) | ||||||||
| 1668 | DefaultIndex = i; | ||||||||
| 1669 | else if (Context.typesAreCompatible(ControllingExpr->getType(), | ||||||||
| 1670 | Types[i]->getType())) | ||||||||
| 1671 | CompatIndices.push_back(i); | ||||||||
| 1672 | } | ||||||||
| 1673 | |||||||||
| 1674 | // C11 6.5.1.1p2 "The controlling expression of a generic selection shall have | ||||||||
| 1675 | // type compatible with at most one of the types named in its generic | ||||||||
| 1676 | // association list." | ||||||||
| 1677 | if (CompatIndices.size() > 1) { | ||||||||
| 1678 | // We strip parens here because the controlling expression is typically | ||||||||
| 1679 | // parenthesized in macro definitions. | ||||||||
| 1680 | ControllingExpr = ControllingExpr->IgnoreParens(); | ||||||||
| 1681 | Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_multi_match) | ||||||||
| 1682 | << ControllingExpr->getSourceRange() << ControllingExpr->getType() | ||||||||
| 1683 | << (unsigned)CompatIndices.size(); | ||||||||
| 1684 | for (unsigned I : CompatIndices) { | ||||||||
| 1685 | Diag(Types[I]->getTypeLoc().getBeginLoc(), | ||||||||
| 1686 | diag::note_compat_assoc) | ||||||||
| 1687 | << Types[I]->getTypeLoc().getSourceRange() | ||||||||
| 1688 | << Types[I]->getType(); | ||||||||
| 1689 | } | ||||||||
| 1690 | return ExprError(); | ||||||||
| 1691 | } | ||||||||
| 1692 | |||||||||
| 1693 | // C11 6.5.1.1p2 "If a generic selection has no default generic association, | ||||||||
| 1694 | // its controlling expression shall have type compatible with exactly one of | ||||||||
| 1695 | // the types named in its generic association list." | ||||||||
| 1696 | if (DefaultIndex == -1U && CompatIndices.size() == 0) { | ||||||||
| 1697 | // We strip parens here because the controlling expression is typically | ||||||||
| 1698 | // parenthesized in macro definitions. | ||||||||
| 1699 | ControllingExpr = ControllingExpr->IgnoreParens(); | ||||||||
| 1700 | Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_no_match) | ||||||||
| 1701 | << ControllingExpr->getSourceRange() << ControllingExpr->getType(); | ||||||||
| 1702 | return ExprError(); | ||||||||
| 1703 | } | ||||||||
| 1704 | |||||||||
| 1705 | // C11 6.5.1.1p3 "If a generic selection has a generic association with a | ||||||||
| 1706 | // type name that is compatible with the type of the controlling expression, | ||||||||
| 1707 | // then the result expression of the generic selection is the expression | ||||||||
| 1708 | // in that generic association. Otherwise, the result expression of the | ||||||||
| 1709 | // generic selection is the expression in the default generic association." | ||||||||
| 1710 | unsigned ResultIndex = | ||||||||
| 1711 | CompatIndices.size() ? CompatIndices[0] : DefaultIndex; | ||||||||
| 1712 | |||||||||
| 1713 | return GenericSelectionExpr::Create( | ||||||||
| 1714 | Context, KeyLoc, ControllingExpr, Types, Exprs, DefaultLoc, RParenLoc, | ||||||||
| 1715 | ContainsUnexpandedParameterPack, ResultIndex); | ||||||||
| 1716 | } | ||||||||
| 1717 | |||||||||
| 1718 | /// getUDSuffixLoc - Create a SourceLocation for a ud-suffix, given the | ||||||||
| 1719 | /// location of the token and the offset of the ud-suffix within it. | ||||||||
| 1720 | static SourceLocation getUDSuffixLoc(Sema &S, SourceLocation TokLoc, | ||||||||
| 1721 | unsigned Offset) { | ||||||||
| 1722 | return Lexer::AdvanceToTokenCharacter(TokLoc, Offset, S.getSourceManager(), | ||||||||
| 1723 | S.getLangOpts()); | ||||||||
| 1724 | } | ||||||||
| 1725 | |||||||||
| 1726 | /// BuildCookedLiteralOperatorCall - A user-defined literal was found. Look up | ||||||||
| 1727 | /// the corresponding cooked (non-raw) literal operator, and build a call to it. | ||||||||
| 1728 | static ExprResult BuildCookedLiteralOperatorCall(Sema &S, Scope *Scope, | ||||||||
| 1729 | IdentifierInfo *UDSuffix, | ||||||||
| 1730 | SourceLocation UDSuffixLoc, | ||||||||
| 1731 | ArrayRef<Expr*> Args, | ||||||||
| 1732 | SourceLocation LitEndLoc) { | ||||||||
| 1733 | assert(Args.size() <= 2 && "too many arguments for literal operator")((Args.size() <= 2 && "too many arguments for literal operator" ) ? static_cast<void> (0) : __assert_fail ("Args.size() <= 2 && \"too many arguments for literal operator\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1733, __PRETTY_FUNCTION__)); | ||||||||
| 1734 | |||||||||
| 1735 | QualType ArgTy[2]; | ||||||||
| 1736 | for (unsigned ArgIdx = 0; ArgIdx != Args.size(); ++ArgIdx) { | ||||||||
| 1737 | ArgTy[ArgIdx] = Args[ArgIdx]->getType(); | ||||||||
| 1738 | if (ArgTy[ArgIdx]->isArrayType()) | ||||||||
| 1739 | ArgTy[ArgIdx] = S.Context.getArrayDecayedType(ArgTy[ArgIdx]); | ||||||||
| 1740 | } | ||||||||
| 1741 | |||||||||
| 1742 | DeclarationName OpName = | ||||||||
| 1743 | S.Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||||||
| 1744 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||||||
| 1745 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||||||
| 1746 | |||||||||
| 1747 | LookupResult R(S, OpName, UDSuffixLoc, Sema::LookupOrdinaryName); | ||||||||
| 1748 | if (S.LookupLiteralOperator(Scope, R, llvm::makeArrayRef(ArgTy, Args.size()), | ||||||||
| 1749 | /*AllowRaw*/ false, /*AllowTemplate*/ false, | ||||||||
| 1750 | /*AllowStringTemplate*/ false, | ||||||||
| 1751 | /*DiagnoseMissing*/ true) == Sema::LOLR_Error) | ||||||||
| 1752 | return ExprError(); | ||||||||
| 1753 | |||||||||
| 1754 | return S.BuildLiteralOperatorCall(R, OpNameInfo, Args, LitEndLoc); | ||||||||
| 1755 | } | ||||||||
| 1756 | |||||||||
| 1757 | /// ActOnStringLiteral - The specified tokens were lexed as pasted string | ||||||||
| 1758 | /// fragments (e.g. "foo" "bar" L"baz"). The result string has to handle string | ||||||||
| 1759 | /// concatenation ([C99 5.1.1.2, translation phase #6]), so it may come from | ||||||||
| 1760 | /// multiple tokens. However, the common case is that StringToks points to one | ||||||||
| 1761 | /// string. | ||||||||
| 1762 | /// | ||||||||
| 1763 | ExprResult | ||||||||
| 1764 | Sema::ActOnStringLiteral(ArrayRef<Token> StringToks, Scope *UDLScope) { | ||||||||
| 1765 | assert(!StringToks.empty() && "Must have at least one string!")((!StringToks.empty() && "Must have at least one string!" ) ? static_cast<void> (0) : __assert_fail ("!StringToks.empty() && \"Must have at least one string!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1765, __PRETTY_FUNCTION__)); | ||||||||
| 1766 | |||||||||
| 1767 | StringLiteralParser Literal(StringToks, PP); | ||||||||
| 1768 | if (Literal.hadError) | ||||||||
| 1769 | return ExprError(); | ||||||||
| 1770 | |||||||||
| 1771 | SmallVector<SourceLocation, 4> StringTokLocs; | ||||||||
| 1772 | for (const Token &Tok : StringToks) | ||||||||
| 1773 | StringTokLocs.push_back(Tok.getLocation()); | ||||||||
| 1774 | |||||||||
| 1775 | QualType CharTy = Context.CharTy; | ||||||||
| 1776 | StringLiteral::StringKind Kind = StringLiteral::Ascii; | ||||||||
| 1777 | if (Literal.isWide()) { | ||||||||
| 1778 | CharTy = Context.getWideCharType(); | ||||||||
| 1779 | Kind = StringLiteral::Wide; | ||||||||
| 1780 | } else if (Literal.isUTF8()) { | ||||||||
| 1781 | if (getLangOpts().Char8) | ||||||||
| 1782 | CharTy = Context.Char8Ty; | ||||||||
| 1783 | Kind = StringLiteral::UTF8; | ||||||||
| 1784 | } else if (Literal.isUTF16()) { | ||||||||
| 1785 | CharTy = Context.Char16Ty; | ||||||||
| 1786 | Kind = StringLiteral::UTF16; | ||||||||
| 1787 | } else if (Literal.isUTF32()) { | ||||||||
| 1788 | CharTy = Context.Char32Ty; | ||||||||
| 1789 | Kind = StringLiteral::UTF32; | ||||||||
| 1790 | } else if (Literal.isPascal()) { | ||||||||
| 1791 | CharTy = Context.UnsignedCharTy; | ||||||||
| 1792 | } | ||||||||
| 1793 | |||||||||
| 1794 | // Warn on initializing an array of char from a u8 string literal; this | ||||||||
| 1795 | // becomes ill-formed in C++2a. | ||||||||
| 1796 | if (getLangOpts().CPlusPlus && !getLangOpts().CPlusPlus20 && | ||||||||
| 1797 | !getLangOpts().Char8 && Kind == StringLiteral::UTF8) { | ||||||||
| 1798 | Diag(StringTokLocs.front(), diag::warn_cxx20_compat_utf8_string); | ||||||||
| 1799 | |||||||||
| 1800 | // Create removals for all 'u8' prefixes in the string literal(s). This | ||||||||
| 1801 | // ensures C++2a compatibility (but may change the program behavior when | ||||||||
| 1802 | // built by non-Clang compilers for which the execution character set is | ||||||||
| 1803 | // not always UTF-8). | ||||||||
| 1804 | auto RemovalDiag = PDiag(diag::note_cxx20_compat_utf8_string_remove_u8); | ||||||||
| 1805 | SourceLocation RemovalDiagLoc; | ||||||||
| 1806 | for (const Token &Tok : StringToks) { | ||||||||
| 1807 | if (Tok.getKind() == tok::utf8_string_literal) { | ||||||||
| 1808 | if (RemovalDiagLoc.isInvalid()) | ||||||||
| 1809 | RemovalDiagLoc = Tok.getLocation(); | ||||||||
| 1810 | RemovalDiag << FixItHint::CreateRemoval(CharSourceRange::getCharRange( | ||||||||
| 1811 | Tok.getLocation(), | ||||||||
| 1812 | Lexer::AdvanceToTokenCharacter(Tok.getLocation(), 2, | ||||||||
| 1813 | getSourceManager(), getLangOpts()))); | ||||||||
| 1814 | } | ||||||||
| 1815 | } | ||||||||
| 1816 | Diag(RemovalDiagLoc, RemovalDiag); | ||||||||
| 1817 | } | ||||||||
| 1818 | |||||||||
| 1819 | QualType StrTy = | ||||||||
| 1820 | Context.getStringLiteralArrayType(CharTy, Literal.GetNumStringChars()); | ||||||||
| 1821 | |||||||||
| 1822 | // Pass &StringTokLocs[0], StringTokLocs.size() to factory! | ||||||||
| 1823 | StringLiteral *Lit = StringLiteral::Create(Context, Literal.GetString(), | ||||||||
| 1824 | Kind, Literal.Pascal, StrTy, | ||||||||
| 1825 | &StringTokLocs[0], | ||||||||
| 1826 | StringTokLocs.size()); | ||||||||
| 1827 | if (Literal.getUDSuffix().empty()) | ||||||||
| 1828 | return Lit; | ||||||||
| 1829 | |||||||||
| 1830 | // We're building a user-defined literal. | ||||||||
| 1831 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||||||
| 1832 | SourceLocation UDSuffixLoc = | ||||||||
| 1833 | getUDSuffixLoc(*this, StringTokLocs[Literal.getUDSuffixToken()], | ||||||||
| 1834 | Literal.getUDSuffixOffset()); | ||||||||
| 1835 | |||||||||
| 1836 | // Make sure we're allowed user-defined literals here. | ||||||||
| 1837 | if (!UDLScope) | ||||||||
| 1838 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_string_udl)); | ||||||||
| 1839 | |||||||||
| 1840 | // C++11 [lex.ext]p5: The literal L is treated as a call of the form | ||||||||
| 1841 | // operator "" X (str, len) | ||||||||
| 1842 | QualType SizeType = Context.getSizeType(); | ||||||||
| 1843 | |||||||||
| 1844 | DeclarationName OpName = | ||||||||
| 1845 | Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||||||
| 1846 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||||||
| 1847 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||||||
| 1848 | |||||||||
| 1849 | QualType ArgTy[] = { | ||||||||
| 1850 | Context.getArrayDecayedType(StrTy), SizeType | ||||||||
| 1851 | }; | ||||||||
| 1852 | |||||||||
| 1853 | LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); | ||||||||
| 1854 | switch (LookupLiteralOperator(UDLScope, R, ArgTy, | ||||||||
| 1855 | /*AllowRaw*/ false, /*AllowTemplate*/ false, | ||||||||
| 1856 | /*AllowStringTemplate*/ true, | ||||||||
| 1857 | /*DiagnoseMissing*/ true)) { | ||||||||
| 1858 | |||||||||
| 1859 | case LOLR_Cooked: { | ||||||||
| 1860 | llvm::APInt Len(Context.getIntWidth(SizeType), Literal.GetNumStringChars()); | ||||||||
| 1861 | IntegerLiteral *LenArg = IntegerLiteral::Create(Context, Len, SizeType, | ||||||||
| 1862 | StringTokLocs[0]); | ||||||||
| 1863 | Expr *Args[] = { Lit, LenArg }; | ||||||||
| 1864 | |||||||||
| 1865 | return BuildLiteralOperatorCall(R, OpNameInfo, Args, StringTokLocs.back()); | ||||||||
| 1866 | } | ||||||||
| 1867 | |||||||||
| 1868 | case LOLR_StringTemplate: { | ||||||||
| 1869 | TemplateArgumentListInfo ExplicitArgs; | ||||||||
| 1870 | |||||||||
| 1871 | unsigned CharBits = Context.getIntWidth(CharTy); | ||||||||
| 1872 | bool CharIsUnsigned = CharTy->isUnsignedIntegerType(); | ||||||||
| 1873 | llvm::APSInt Value(CharBits, CharIsUnsigned); | ||||||||
| 1874 | |||||||||
| 1875 | TemplateArgument TypeArg(CharTy); | ||||||||
| 1876 | TemplateArgumentLocInfo TypeArgInfo(Context.getTrivialTypeSourceInfo(CharTy)); | ||||||||
| 1877 | ExplicitArgs.addArgument(TemplateArgumentLoc(TypeArg, TypeArgInfo)); | ||||||||
| 1878 | |||||||||
| 1879 | for (unsigned I = 0, N = Lit->getLength(); I != N; ++I) { | ||||||||
| 1880 | Value = Lit->getCodeUnit(I); | ||||||||
| 1881 | TemplateArgument Arg(Context, Value, CharTy); | ||||||||
| 1882 | TemplateArgumentLocInfo ArgInfo; | ||||||||
| 1883 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||||||
| 1884 | } | ||||||||
| 1885 | return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), | ||||||||
| 1886 | &ExplicitArgs); | ||||||||
| 1887 | } | ||||||||
| 1888 | case LOLR_Raw: | ||||||||
| 1889 | case LOLR_Template: | ||||||||
| 1890 | case LOLR_ErrorNoDiagnostic: | ||||||||
| 1891 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1891); | ||||||||
| 1892 | case LOLR_Error: | ||||||||
| 1893 | return ExprError(); | ||||||||
| 1894 | } | ||||||||
| 1895 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 1895); | ||||||||
| 1896 | } | ||||||||
| 1897 | |||||||||
| 1898 | DeclRefExpr * | ||||||||
| 1899 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||||||
| 1900 | SourceLocation Loc, | ||||||||
| 1901 | const CXXScopeSpec *SS) { | ||||||||
| 1902 | DeclarationNameInfo NameInfo(D->getDeclName(), Loc); | ||||||||
| 1903 | return BuildDeclRefExpr(D, Ty, VK, NameInfo, SS); | ||||||||
| 1904 | } | ||||||||
| 1905 | |||||||||
| 1906 | DeclRefExpr * | ||||||||
| 1907 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||||||
| 1908 | const DeclarationNameInfo &NameInfo, | ||||||||
| 1909 | const CXXScopeSpec *SS, NamedDecl *FoundD, | ||||||||
| 1910 | SourceLocation TemplateKWLoc, | ||||||||
| 1911 | const TemplateArgumentListInfo *TemplateArgs) { | ||||||||
| 1912 | NestedNameSpecifierLoc NNS = | ||||||||
| 1913 | SS ? SS->getWithLocInContext(Context) : NestedNameSpecifierLoc(); | ||||||||
| 1914 | return BuildDeclRefExpr(D, Ty, VK, NameInfo, NNS, FoundD, TemplateKWLoc, | ||||||||
| 1915 | TemplateArgs); | ||||||||
| 1916 | } | ||||||||
| 1917 | |||||||||
| 1918 | NonOdrUseReason Sema::getNonOdrUseReasonInCurrentContext(ValueDecl *D) { | ||||||||
| 1919 | // A declaration named in an unevaluated operand never constitutes an odr-use. | ||||||||
| 1920 | if (isUnevaluatedContext()) | ||||||||
| 1921 | return NOUR_Unevaluated; | ||||||||
| 1922 | |||||||||
| 1923 | // C++2a [basic.def.odr]p4: | ||||||||
| 1924 | // A variable x whose name appears as a potentially-evaluated expression e | ||||||||
| 1925 | // is odr-used by e unless [...] x is a reference that is usable in | ||||||||
| 1926 | // constant expressions. | ||||||||
| 1927 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { | ||||||||
| 1928 | if (VD->getType()->isReferenceType() && | ||||||||
| 1929 | !(getLangOpts().OpenMP && isOpenMPCapturedDecl(D)) && | ||||||||
| 1930 | VD->isUsableInConstantExpressions(Context)) | ||||||||
| 1931 | return NOUR_Constant; | ||||||||
| 1932 | } | ||||||||
| 1933 | |||||||||
| 1934 | // All remaining non-variable cases constitute an odr-use. For variables, we | ||||||||
| 1935 | // need to wait and see how the expression is used. | ||||||||
| 1936 | return NOUR_None; | ||||||||
| 1937 | } | ||||||||
| 1938 | |||||||||
| 1939 | /// BuildDeclRefExpr - Build an expression that references a | ||||||||
| 1940 | /// declaration that does not require a closure capture. | ||||||||
| 1941 | DeclRefExpr * | ||||||||
| 1942 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||||||
| 1943 | const DeclarationNameInfo &NameInfo, | ||||||||
| 1944 | NestedNameSpecifierLoc NNS, NamedDecl *FoundD, | ||||||||
| 1945 | SourceLocation TemplateKWLoc, | ||||||||
| 1946 | const TemplateArgumentListInfo *TemplateArgs) { | ||||||||
| 1947 | bool RefersToCapturedVariable = | ||||||||
| 1948 | isa<VarDecl>(D) && | ||||||||
| 1949 | NeedToCaptureVariable(cast<VarDecl>(D), NameInfo.getLoc()); | ||||||||
| 1950 | |||||||||
| 1951 | DeclRefExpr *E = DeclRefExpr::Create( | ||||||||
| 1952 | Context, NNS, TemplateKWLoc, D, RefersToCapturedVariable, NameInfo, Ty, | ||||||||
| 1953 | VK, FoundD, TemplateArgs, getNonOdrUseReasonInCurrentContext(D)); | ||||||||
| 1954 | MarkDeclRefReferenced(E); | ||||||||
| 1955 | |||||||||
| 1956 | // C++ [except.spec]p17: | ||||||||
| 1957 | // An exception-specification is considered to be needed when: | ||||||||
| 1958 | // - in an expression, the function is the unique lookup result or | ||||||||
| 1959 | // the selected member of a set of overloaded functions. | ||||||||
| 1960 | // | ||||||||
| 1961 | // We delay doing this until after we've built the function reference and | ||||||||
| 1962 | // marked it as used so that: | ||||||||
| 1963 | // a) if the function is defaulted, we get errors from defining it before / | ||||||||
| 1964 | // instead of errors from computing its exception specification, and | ||||||||
| 1965 | // b) if the function is a defaulted comparison, we can use the body we | ||||||||
| 1966 | // build when defining it as input to the exception specification | ||||||||
| 1967 | // computation rather than computing a new body. | ||||||||
| 1968 | if (auto *FPT = Ty->getAs<FunctionProtoType>()) { | ||||||||
| 1969 | if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) { | ||||||||
| 1970 | if (auto *NewFPT = ResolveExceptionSpec(NameInfo.getLoc(), FPT)) | ||||||||
| 1971 | E->setType(Context.getQualifiedType(NewFPT, Ty.getQualifiers())); | ||||||||
| 1972 | } | ||||||||
| 1973 | } | ||||||||
| 1974 | |||||||||
| 1975 | if (getLangOpts().ObjCWeak && isa<VarDecl>(D) && | ||||||||
| 1976 | Ty.getObjCLifetime() == Qualifiers::OCL_Weak && !isUnevaluatedContext() && | ||||||||
| 1977 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, E->getBeginLoc())) | ||||||||
| 1978 | getCurFunction()->recordUseOfWeak(E); | ||||||||
| 1979 | |||||||||
| 1980 | FieldDecl *FD = dyn_cast<FieldDecl>(D); | ||||||||
| 1981 | if (IndirectFieldDecl *IFD = dyn_cast<IndirectFieldDecl>(D)) | ||||||||
| 1982 | FD = IFD->getAnonField(); | ||||||||
| 1983 | if (FD) { | ||||||||
| 1984 | UnusedPrivateFields.remove(FD); | ||||||||
| 1985 | // Just in case we're building an illegal pointer-to-member. | ||||||||
| 1986 | if (FD->isBitField()) | ||||||||
| 1987 | E->setObjectKind(OK_BitField); | ||||||||
| 1988 | } | ||||||||
| 1989 | |||||||||
| 1990 | // C++ [expr.prim]/8: The expression [...] is a bit-field if the identifier | ||||||||
| 1991 | // designates a bit-field. | ||||||||
| 1992 | if (auto *BD = dyn_cast<BindingDecl>(D)) | ||||||||
| 1993 | if (auto *BE = BD->getBinding()) | ||||||||
| 1994 | E->setObjectKind(BE->getObjectKind()); | ||||||||
| 1995 | |||||||||
| 1996 | return E; | ||||||||
| 1997 | } | ||||||||
| 1998 | |||||||||
| 1999 | /// Decomposes the given name into a DeclarationNameInfo, its location, and | ||||||||
| 2000 | /// possibly a list of template arguments. | ||||||||
| 2001 | /// | ||||||||
| 2002 | /// If this produces template arguments, it is permitted to call | ||||||||
| 2003 | /// DecomposeTemplateName. | ||||||||
| 2004 | /// | ||||||||
| 2005 | /// This actually loses a lot of source location information for | ||||||||
| 2006 | /// non-standard name kinds; we should consider preserving that in | ||||||||
| 2007 | /// some way. | ||||||||
| 2008 | void | ||||||||
| 2009 | Sema::DecomposeUnqualifiedId(const UnqualifiedId &Id, | ||||||||
| 2010 | TemplateArgumentListInfo &Buffer, | ||||||||
| 2011 | DeclarationNameInfo &NameInfo, | ||||||||
| 2012 | const TemplateArgumentListInfo *&TemplateArgs) { | ||||||||
| 2013 | if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId) { | ||||||||
| 2014 | Buffer.setLAngleLoc(Id.TemplateId->LAngleLoc); | ||||||||
| 2015 | Buffer.setRAngleLoc(Id.TemplateId->RAngleLoc); | ||||||||
| 2016 | |||||||||
| 2017 | ASTTemplateArgsPtr TemplateArgsPtr(Id.TemplateId->getTemplateArgs(), | ||||||||
| 2018 | Id.TemplateId->NumArgs); | ||||||||
| 2019 | translateTemplateArguments(TemplateArgsPtr, Buffer); | ||||||||
| 2020 | |||||||||
| 2021 | TemplateName TName = Id.TemplateId->Template.get(); | ||||||||
| 2022 | SourceLocation TNameLoc = Id.TemplateId->TemplateNameLoc; | ||||||||
| 2023 | NameInfo = Context.getNameForTemplate(TName, TNameLoc); | ||||||||
| 2024 | TemplateArgs = &Buffer; | ||||||||
| 2025 | } else { | ||||||||
| 2026 | NameInfo = GetNameFromUnqualifiedId(Id); | ||||||||
| 2027 | TemplateArgs = nullptr; | ||||||||
| 2028 | } | ||||||||
| 2029 | } | ||||||||
| 2030 | |||||||||
| 2031 | static void emitEmptyLookupTypoDiagnostic( | ||||||||
| 2032 | const TypoCorrection &TC, Sema &SemaRef, const CXXScopeSpec &SS, | ||||||||
| 2033 | DeclarationName Typo, SourceLocation TypoLoc, ArrayRef<Expr *> Args, | ||||||||
| 2034 | unsigned DiagnosticID, unsigned DiagnosticSuggestID) { | ||||||||
| 2035 | DeclContext *Ctx = | ||||||||
| 2036 | SS.isEmpty() ? nullptr : SemaRef.computeDeclContext(SS, false); | ||||||||
| 2037 | if (!TC) { | ||||||||
| 2038 | // Emit a special diagnostic for failed member lookups. | ||||||||
| 2039 | // FIXME: computing the declaration context might fail here (?) | ||||||||
| 2040 | if (Ctx) | ||||||||
| 2041 | SemaRef.Diag(TypoLoc, diag::err_no_member) << Typo << Ctx | ||||||||
| 2042 | << SS.getRange(); | ||||||||
| 2043 | else | ||||||||
| 2044 | SemaRef.Diag(TypoLoc, DiagnosticID) << Typo; | ||||||||
| 2045 | return; | ||||||||
| 2046 | } | ||||||||
| 2047 | |||||||||
| 2048 | std::string CorrectedStr = TC.getAsString(SemaRef.getLangOpts()); | ||||||||
| 2049 | bool DroppedSpecifier = | ||||||||
| 2050 | TC.WillReplaceSpecifier() && Typo.getAsString() == CorrectedStr; | ||||||||
| 2051 | unsigned NoteID = TC.getCorrectionDeclAs<ImplicitParamDecl>() | ||||||||
| 2052 | ? diag::note_implicit_param_decl | ||||||||
| 2053 | : diag::note_previous_decl; | ||||||||
| 2054 | if (!Ctx) | ||||||||
| 2055 | SemaRef.diagnoseTypo(TC, SemaRef.PDiag(DiagnosticSuggestID) << Typo, | ||||||||
| 2056 | SemaRef.PDiag(NoteID)); | ||||||||
| 2057 | else | ||||||||
| 2058 | SemaRef.diagnoseTypo(TC, SemaRef.PDiag(diag::err_no_member_suggest) | ||||||||
| 2059 | << Typo << Ctx << DroppedSpecifier | ||||||||
| 2060 | << SS.getRange(), | ||||||||
| 2061 | SemaRef.PDiag(NoteID)); | ||||||||
| 2062 | } | ||||||||
| 2063 | |||||||||
| 2064 | /// Diagnose an empty lookup. | ||||||||
| 2065 | /// | ||||||||
| 2066 | /// \return false if new lookup candidates were found | ||||||||
| 2067 | bool Sema::DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, | ||||||||
| 2068 | CorrectionCandidateCallback &CCC, | ||||||||
| 2069 | TemplateArgumentListInfo *ExplicitTemplateArgs, | ||||||||
| 2070 | ArrayRef<Expr *> Args, TypoExpr **Out) { | ||||||||
| 2071 | DeclarationName Name = R.getLookupName(); | ||||||||
| 2072 | |||||||||
| 2073 | unsigned diagnostic = diag::err_undeclared_var_use; | ||||||||
| 2074 | unsigned diagnostic_suggest = diag::err_undeclared_var_use_suggest; | ||||||||
| 2075 | if (Name.getNameKind() == DeclarationName::CXXOperatorName || | ||||||||
| 2076 | Name.getNameKind() == DeclarationName::CXXLiteralOperatorName || | ||||||||
| 2077 | Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { | ||||||||
| 2078 | diagnostic = diag::err_undeclared_use; | ||||||||
| 2079 | diagnostic_suggest = diag::err_undeclared_use_suggest; | ||||||||
| 2080 | } | ||||||||
| 2081 | |||||||||
| 2082 | // If the original lookup was an unqualified lookup, fake an | ||||||||
| 2083 | // unqualified lookup. This is useful when (for example) the | ||||||||
| 2084 | // original lookup would not have found something because it was a | ||||||||
| 2085 | // dependent name. | ||||||||
| 2086 | DeclContext *DC = SS.isEmpty() ? CurContext : nullptr; | ||||||||
| 2087 | while (DC) { | ||||||||
| 2088 | if (isa<CXXRecordDecl>(DC)) { | ||||||||
| 2089 | LookupQualifiedName(R, DC); | ||||||||
| 2090 | |||||||||
| 2091 | if (!R.empty()) { | ||||||||
| 2092 | // Don't give errors about ambiguities in this lookup. | ||||||||
| 2093 | R.suppressDiagnostics(); | ||||||||
| 2094 | |||||||||
| 2095 | // During a default argument instantiation the CurContext points | ||||||||
| 2096 | // to a CXXMethodDecl; but we can't apply a this-> fixit inside a | ||||||||
| 2097 | // function parameter list, hence add an explicit check. | ||||||||
| 2098 | bool isDefaultArgument = | ||||||||
| 2099 | !CodeSynthesisContexts.empty() && | ||||||||
| 2100 | CodeSynthesisContexts.back().Kind == | ||||||||
| 2101 | CodeSynthesisContext::DefaultFunctionArgumentInstantiation; | ||||||||
| 2102 | CXXMethodDecl *CurMethod = dyn_cast<CXXMethodDecl>(CurContext); | ||||||||
| 2103 | bool isInstance = CurMethod && | ||||||||
| 2104 | CurMethod->isInstance() && | ||||||||
| 2105 | DC == CurMethod->getParent() && !isDefaultArgument; | ||||||||
| 2106 | |||||||||
| 2107 | // Give a code modification hint to insert 'this->'. | ||||||||
| 2108 | // TODO: fixit for inserting 'Base<T>::' in the other cases. | ||||||||
| 2109 | // Actually quite difficult! | ||||||||
| 2110 | if (getLangOpts().MSVCCompat) | ||||||||
| 2111 | diagnostic = diag::ext_found_via_dependent_bases_lookup; | ||||||||
| 2112 | if (isInstance) { | ||||||||
| 2113 | Diag(R.getNameLoc(), diagnostic) << Name | ||||||||
| 2114 | << FixItHint::CreateInsertion(R.getNameLoc(), "this->"); | ||||||||
| 2115 | CheckCXXThisCapture(R.getNameLoc()); | ||||||||
| 2116 | } else { | ||||||||
| 2117 | Diag(R.getNameLoc(), diagnostic) << Name; | ||||||||
| 2118 | } | ||||||||
| 2119 | |||||||||
| 2120 | // Do we really want to note all of these? | ||||||||
| 2121 | for (NamedDecl *D : R) | ||||||||
| 2122 | Diag(D->getLocation(), diag::note_dependent_var_use); | ||||||||
| 2123 | |||||||||
| 2124 | // Return true if we are inside a default argument instantiation | ||||||||
| 2125 | // and the found name refers to an instance member function, otherwise | ||||||||
| 2126 | // the function calling DiagnoseEmptyLookup will try to create an | ||||||||
| 2127 | // implicit member call and this is wrong for default argument. | ||||||||
| 2128 | if (isDefaultArgument && ((*R.begin())->isCXXInstanceMember())) { | ||||||||
| 2129 | Diag(R.getNameLoc(), diag::err_member_call_without_object); | ||||||||
| 2130 | return true; | ||||||||
| 2131 | } | ||||||||
| 2132 | |||||||||
| 2133 | // Tell the callee to try to recover. | ||||||||
| 2134 | return false; | ||||||||
| 2135 | } | ||||||||
| 2136 | |||||||||
| 2137 | R.clear(); | ||||||||
| 2138 | } | ||||||||
| 2139 | |||||||||
| 2140 | DC = DC->getLookupParent(); | ||||||||
| 2141 | } | ||||||||
| 2142 | |||||||||
| 2143 | // We didn't find anything, so try to correct for a typo. | ||||||||
| 2144 | TypoCorrection Corrected; | ||||||||
| 2145 | if (S && Out) { | ||||||||
| 2146 | SourceLocation TypoLoc = R.getNameLoc(); | ||||||||
| 2147 | assert(!ExplicitTemplateArgs &&((!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!" ) ? static_cast<void> (0) : __assert_fail ("!ExplicitTemplateArgs && \"Diagnosing an empty lookup with explicit template args!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2148, __PRETTY_FUNCTION__)) | ||||||||
| 2148 | "Diagnosing an empty lookup with explicit template args!")((!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!" ) ? static_cast<void> (0) : __assert_fail ("!ExplicitTemplateArgs && \"Diagnosing an empty lookup with explicit template args!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2148, __PRETTY_FUNCTION__)); | ||||||||
| 2149 | *Out = CorrectTypoDelayed( | ||||||||
| 2150 | R.getLookupNameInfo(), R.getLookupKind(), S, &SS, CCC, | ||||||||
| 2151 | [=](const TypoCorrection &TC) { | ||||||||
| 2152 | emitEmptyLookupTypoDiagnostic(TC, *this, SS, Name, TypoLoc, Args, | ||||||||
| 2153 | diagnostic, diagnostic_suggest); | ||||||||
| 2154 | }, | ||||||||
| 2155 | nullptr, CTK_ErrorRecovery); | ||||||||
| 2156 | if (*Out) | ||||||||
| 2157 | return true; | ||||||||
| 2158 | } else if (S && | ||||||||
| 2159 | (Corrected = CorrectTypo(R.getLookupNameInfo(), R.getLookupKind(), | ||||||||
| 2160 | S, &SS, CCC, CTK_ErrorRecovery))) { | ||||||||
| 2161 | std::string CorrectedStr(Corrected.getAsString(getLangOpts())); | ||||||||
| 2162 | bool DroppedSpecifier = | ||||||||
| 2163 | Corrected.WillReplaceSpecifier() && Name.getAsString() == CorrectedStr; | ||||||||
| 2164 | R.setLookupName(Corrected.getCorrection()); | ||||||||
| 2165 | |||||||||
| 2166 | bool AcceptableWithRecovery = false; | ||||||||
| 2167 | bool AcceptableWithoutRecovery = false; | ||||||||
| 2168 | NamedDecl *ND = Corrected.getFoundDecl(); | ||||||||
| 2169 | if (ND) { | ||||||||
| 2170 | if (Corrected.isOverloaded()) { | ||||||||
| 2171 | OverloadCandidateSet OCS(R.getNameLoc(), | ||||||||
| 2172 | OverloadCandidateSet::CSK_Normal); | ||||||||
| 2173 | OverloadCandidateSet::iterator Best; | ||||||||
| 2174 | for (NamedDecl *CD : Corrected) { | ||||||||
| 2175 | if (FunctionTemplateDecl *FTD = | ||||||||
| 2176 | dyn_cast<FunctionTemplateDecl>(CD)) | ||||||||
| 2177 | AddTemplateOverloadCandidate( | ||||||||
| 2178 | FTD, DeclAccessPair::make(FTD, AS_none), ExplicitTemplateArgs, | ||||||||
| 2179 | Args, OCS); | ||||||||
| 2180 | else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(CD)) | ||||||||
| 2181 | if (!ExplicitTemplateArgs || ExplicitTemplateArgs->size() == 0) | ||||||||
| 2182 | AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), | ||||||||
| 2183 | Args, OCS); | ||||||||
| 2184 | } | ||||||||
| 2185 | switch (OCS.BestViableFunction(*this, R.getNameLoc(), Best)) { | ||||||||
| 2186 | case OR_Success: | ||||||||
| 2187 | ND = Best->FoundDecl; | ||||||||
| 2188 | Corrected.setCorrectionDecl(ND); | ||||||||
| 2189 | break; | ||||||||
| 2190 | default: | ||||||||
| 2191 | // FIXME: Arbitrarily pick the first declaration for the note. | ||||||||
| 2192 | Corrected.setCorrectionDecl(ND); | ||||||||
| 2193 | break; | ||||||||
| 2194 | } | ||||||||
| 2195 | } | ||||||||
| 2196 | R.addDecl(ND); | ||||||||
| 2197 | if (getLangOpts().CPlusPlus && ND->isCXXClassMember()) { | ||||||||
| 2198 | CXXRecordDecl *Record = nullptr; | ||||||||
| 2199 | if (Corrected.getCorrectionSpecifier()) { | ||||||||
| 2200 | const Type *Ty = Corrected.getCorrectionSpecifier()->getAsType(); | ||||||||
| 2201 | Record = Ty->getAsCXXRecordDecl(); | ||||||||
| 2202 | } | ||||||||
| 2203 | if (!Record) | ||||||||
| 2204 | Record = cast<CXXRecordDecl>( | ||||||||
| 2205 | ND->getDeclContext()->getRedeclContext()); | ||||||||
| 2206 | R.setNamingClass(Record); | ||||||||
| 2207 | } | ||||||||
| 2208 | |||||||||
| 2209 | auto *UnderlyingND = ND->getUnderlyingDecl(); | ||||||||
| 2210 | AcceptableWithRecovery = isa<ValueDecl>(UnderlyingND) || | ||||||||
| 2211 | isa<FunctionTemplateDecl>(UnderlyingND); | ||||||||
| 2212 | // FIXME: If we ended up with a typo for a type name or | ||||||||
| 2213 | // Objective-C class name, we're in trouble because the parser | ||||||||
| 2214 | // is in the wrong place to recover. Suggest the typo | ||||||||
| 2215 | // correction, but don't make it a fix-it since we're not going | ||||||||
| 2216 | // to recover well anyway. | ||||||||
| 2217 | AcceptableWithoutRecovery = isa<TypeDecl>(UnderlyingND) || | ||||||||
| 2218 | getAsTypeTemplateDecl(UnderlyingND) || | ||||||||
| 2219 | isa<ObjCInterfaceDecl>(UnderlyingND); | ||||||||
| 2220 | } else { | ||||||||
| 2221 | // FIXME: We found a keyword. Suggest it, but don't provide a fix-it | ||||||||
| 2222 | // because we aren't able to recover. | ||||||||
| 2223 | AcceptableWithoutRecovery = true; | ||||||||
| 2224 | } | ||||||||
| 2225 | |||||||||
| 2226 | if (AcceptableWithRecovery || AcceptableWithoutRecovery) { | ||||||||
| 2227 | unsigned NoteID = Corrected.getCorrectionDeclAs<ImplicitParamDecl>() | ||||||||
| 2228 | ? diag::note_implicit_param_decl | ||||||||
| 2229 | : diag::note_previous_decl; | ||||||||
| 2230 | if (SS.isEmpty()) | ||||||||
| 2231 | diagnoseTypo(Corrected, PDiag(diagnostic_suggest) << Name, | ||||||||
| 2232 | PDiag(NoteID), AcceptableWithRecovery); | ||||||||
| 2233 | else | ||||||||
| 2234 | diagnoseTypo(Corrected, PDiag(diag::err_no_member_suggest) | ||||||||
| 2235 | << Name << computeDeclContext(SS, false) | ||||||||
| 2236 | << DroppedSpecifier << SS.getRange(), | ||||||||
| 2237 | PDiag(NoteID), AcceptableWithRecovery); | ||||||||
| 2238 | |||||||||
| 2239 | // Tell the callee whether to try to recover. | ||||||||
| 2240 | return !AcceptableWithRecovery; | ||||||||
| 2241 | } | ||||||||
| 2242 | } | ||||||||
| 2243 | R.clear(); | ||||||||
| 2244 | |||||||||
| 2245 | // Emit a special diagnostic for failed member lookups. | ||||||||
| 2246 | // FIXME: computing the declaration context might fail here (?) | ||||||||
| 2247 | if (!SS.isEmpty()) { | ||||||||
| 2248 | Diag(R.getNameLoc(), diag::err_no_member) | ||||||||
| 2249 | << Name << computeDeclContext(SS, false) | ||||||||
| 2250 | << SS.getRange(); | ||||||||
| 2251 | return true; | ||||||||
| 2252 | } | ||||||||
| 2253 | |||||||||
| 2254 | // Give up, we can't recover. | ||||||||
| 2255 | Diag(R.getNameLoc(), diagnostic) << Name; | ||||||||
| 2256 | return true; | ||||||||
| 2257 | } | ||||||||
| 2258 | |||||||||
| 2259 | /// In Microsoft mode, if we are inside a template class whose parent class has | ||||||||
| 2260 | /// dependent base classes, and we can't resolve an unqualified identifier, then | ||||||||
| 2261 | /// assume the identifier is a member of a dependent base class. We can only | ||||||||
| 2262 | /// recover successfully in static methods, instance methods, and other contexts | ||||||||
| 2263 | /// where 'this' is available. This doesn't precisely match MSVC's | ||||||||
| 2264 | /// instantiation model, but it's close enough. | ||||||||
| 2265 | static Expr * | ||||||||
| 2266 | recoverFromMSUnqualifiedLookup(Sema &S, ASTContext &Context, | ||||||||
| 2267 | DeclarationNameInfo &NameInfo, | ||||||||
| 2268 | SourceLocation TemplateKWLoc, | ||||||||
| 2269 | const TemplateArgumentListInfo *TemplateArgs) { | ||||||||
| 2270 | // Only try to recover from lookup into dependent bases in static methods or | ||||||||
| 2271 | // contexts where 'this' is available. | ||||||||
| 2272 | QualType ThisType = S.getCurrentThisType(); | ||||||||
| 2273 | const CXXRecordDecl *RD = nullptr; | ||||||||
| 2274 | if (!ThisType.isNull()) | ||||||||
| 2275 | RD = ThisType->getPointeeType()->getAsCXXRecordDecl(); | ||||||||
| 2276 | else if (auto *MD = dyn_cast<CXXMethodDecl>(S.CurContext)) | ||||||||
| 2277 | RD = MD->getParent(); | ||||||||
| 2278 | if (!RD || !RD->hasAnyDependentBases()) | ||||||||
| 2279 | return nullptr; | ||||||||
| 2280 | |||||||||
| 2281 | // Diagnose this as unqualified lookup into a dependent base class. If 'this' | ||||||||
| 2282 | // is available, suggest inserting 'this->' as a fixit. | ||||||||
| 2283 | SourceLocation Loc = NameInfo.getLoc(); | ||||||||
| 2284 | auto DB = S.Diag(Loc, diag::ext_undeclared_unqual_id_with_dependent_base); | ||||||||
| 2285 | DB << NameInfo.getName() << RD; | ||||||||
| 2286 | |||||||||
| 2287 | if (!ThisType.isNull()) { | ||||||||
| 2288 | DB << FixItHint::CreateInsertion(Loc, "this->"); | ||||||||
| 2289 | return CXXDependentScopeMemberExpr::Create( | ||||||||
| 2290 | Context, /*This=*/nullptr, ThisType, /*IsArrow=*/true, | ||||||||
| 2291 | /*Op=*/SourceLocation(), NestedNameSpecifierLoc(), TemplateKWLoc, | ||||||||
| 2292 | /*FirstQualifierFoundInScope=*/nullptr, NameInfo, TemplateArgs); | ||||||||
| 2293 | } | ||||||||
| 2294 | |||||||||
| 2295 | // Synthesize a fake NNS that points to the derived class. This will | ||||||||
| 2296 | // perform name lookup during template instantiation. | ||||||||
| 2297 | CXXScopeSpec SS; | ||||||||
| 2298 | auto *NNS = | ||||||||
| 2299 | NestedNameSpecifier::Create(Context, nullptr, true, RD->getTypeForDecl()); | ||||||||
| 2300 | SS.MakeTrivial(Context, NNS, SourceRange(Loc, Loc)); | ||||||||
| 2301 | return DependentScopeDeclRefExpr::Create( | ||||||||
| 2302 | Context, SS.getWithLocInContext(Context), TemplateKWLoc, NameInfo, | ||||||||
| 2303 | TemplateArgs); | ||||||||
| 2304 | } | ||||||||
| 2305 | |||||||||
| 2306 | ExprResult | ||||||||
| 2307 | Sema::ActOnIdExpression(Scope *S, CXXScopeSpec &SS, | ||||||||
| 2308 | SourceLocation TemplateKWLoc, UnqualifiedId &Id, | ||||||||
| 2309 | bool HasTrailingLParen, bool IsAddressOfOperand, | ||||||||
| 2310 | CorrectionCandidateCallback *CCC, | ||||||||
| 2311 | bool IsInlineAsmIdentifier, Token *KeywordReplacement) { | ||||||||
| 2312 | assert(!(IsAddressOfOperand && HasTrailingLParen) &&((!(IsAddressOfOperand && HasTrailingLParen) && "cannot be direct & operand and have a trailing lparen") ? static_cast<void> (0) : __assert_fail ("!(IsAddressOfOperand && HasTrailingLParen) && \"cannot be direct & operand and have a trailing lparen\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2313, __PRETTY_FUNCTION__)) | ||||||||
| 2313 | "cannot be direct & operand and have a trailing lparen")((!(IsAddressOfOperand && HasTrailingLParen) && "cannot be direct & operand and have a trailing lparen") ? static_cast<void> (0) : __assert_fail ("!(IsAddressOfOperand && HasTrailingLParen) && \"cannot be direct & operand and have a trailing lparen\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2313, __PRETTY_FUNCTION__)); | ||||||||
| 2314 | if (SS.isInvalid()) | ||||||||
| 2315 | return ExprError(); | ||||||||
| 2316 | |||||||||
| 2317 | TemplateArgumentListInfo TemplateArgsBuffer; | ||||||||
| 2318 | |||||||||
| 2319 | // Decompose the UnqualifiedId into the following data. | ||||||||
| 2320 | DeclarationNameInfo NameInfo; | ||||||||
| 2321 | const TemplateArgumentListInfo *TemplateArgs; | ||||||||
| 2322 | DecomposeUnqualifiedId(Id, TemplateArgsBuffer, NameInfo, TemplateArgs); | ||||||||
| 2323 | |||||||||
| 2324 | DeclarationName Name = NameInfo.getName(); | ||||||||
| 2325 | IdentifierInfo *II = Name.getAsIdentifierInfo(); | ||||||||
| 2326 | SourceLocation NameLoc = NameInfo.getLoc(); | ||||||||
| 2327 | |||||||||
| 2328 | if (II && II->isEditorPlaceholder()) { | ||||||||
| 2329 | // FIXME: When typed placeholders are supported we can create a typed | ||||||||
| 2330 | // placeholder expression node. | ||||||||
| 2331 | return ExprError(); | ||||||||
| 2332 | } | ||||||||
| 2333 | |||||||||
| 2334 | // C++ [temp.dep.expr]p3: | ||||||||
| 2335 | // An id-expression is type-dependent if it contains: | ||||||||
| 2336 | // -- an identifier that was declared with a dependent type, | ||||||||
| 2337 | // (note: handled after lookup) | ||||||||
| 2338 | // -- a template-id that is dependent, | ||||||||
| 2339 | // (note: handled in BuildTemplateIdExpr) | ||||||||
| 2340 | // -- a conversion-function-id that specifies a dependent type, | ||||||||
| 2341 | // -- a nested-name-specifier that contains a class-name that | ||||||||
| 2342 | // names a dependent type. | ||||||||
| 2343 | // Determine whether this is a member of an unknown specialization; | ||||||||
| 2344 | // we need to handle these differently. | ||||||||
| 2345 | bool DependentID = false; | ||||||||
| 2346 | if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName && | ||||||||
| 2347 | Name.getCXXNameType()->isDependentType()) { | ||||||||
| 2348 | DependentID = true; | ||||||||
| 2349 | } else if (SS.isSet()) { | ||||||||
| 2350 | if (DeclContext *DC = computeDeclContext(SS, false)) { | ||||||||
| 2351 | if (RequireCompleteDeclContext(SS, DC)) | ||||||||
| 2352 | return ExprError(); | ||||||||
| 2353 | } else { | ||||||||
| 2354 | DependentID = true; | ||||||||
| 2355 | } | ||||||||
| 2356 | } | ||||||||
| 2357 | |||||||||
| 2358 | if (DependentID) | ||||||||
| 2359 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||||||
| 2360 | IsAddressOfOperand, TemplateArgs); | ||||||||
| 2361 | |||||||||
| 2362 | // Perform the required lookup. | ||||||||
| 2363 | LookupResult R(*this, NameInfo, | ||||||||
| 2364 | (Id.getKind() == UnqualifiedIdKind::IK_ImplicitSelfParam) | ||||||||
| 2365 | ? LookupObjCImplicitSelfParam | ||||||||
| 2366 | : LookupOrdinaryName); | ||||||||
| 2367 | if (TemplateKWLoc.isValid() || TemplateArgs) { | ||||||||
| 2368 | // Lookup the template name again to correctly establish the context in | ||||||||
| 2369 | // which it was found. This is really unfortunate as we already did the | ||||||||
| 2370 | // lookup to determine that it was a template name in the first place. If | ||||||||
| 2371 | // this becomes a performance hit, we can work harder to preserve those | ||||||||
| 2372 | // results until we get here but it's likely not worth it. | ||||||||
| 2373 | bool MemberOfUnknownSpecialization; | ||||||||
| 2374 | AssumedTemplateKind AssumedTemplate; | ||||||||
| 2375 | if (LookupTemplateName(R, S, SS, QualType(), /*EnteringContext=*/false, | ||||||||
| 2376 | MemberOfUnknownSpecialization, TemplateKWLoc, | ||||||||
| 2377 | &AssumedTemplate)) | ||||||||
| 2378 | return ExprError(); | ||||||||
| 2379 | |||||||||
| 2380 | if (MemberOfUnknownSpecialization || | ||||||||
| 2381 | (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation)) | ||||||||
| 2382 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||||||
| 2383 | IsAddressOfOperand, TemplateArgs); | ||||||||
| 2384 | } else { | ||||||||
| 2385 | bool IvarLookupFollowUp = II && !SS.isSet() && getCurMethodDecl(); | ||||||||
| 2386 | LookupParsedName(R, S, &SS, !IvarLookupFollowUp); | ||||||||
| 2387 | |||||||||
| 2388 | // If the result might be in a dependent base class, this is a dependent | ||||||||
| 2389 | // id-expression. | ||||||||
| 2390 | if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) | ||||||||
| 2391 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||||||
| 2392 | IsAddressOfOperand, TemplateArgs); | ||||||||
| 2393 | |||||||||
| 2394 | // If this reference is in an Objective-C method, then we need to do | ||||||||
| 2395 | // some special Objective-C lookup, too. | ||||||||
| 2396 | if (IvarLookupFollowUp) { | ||||||||
| 2397 | ExprResult E(LookupInObjCMethod(R, S, II, true)); | ||||||||
| 2398 | if (E.isInvalid()) | ||||||||
| 2399 | return ExprError(); | ||||||||
| 2400 | |||||||||
| 2401 | if (Expr *Ex = E.getAs<Expr>()) | ||||||||
| 2402 | return Ex; | ||||||||
| 2403 | } | ||||||||
| 2404 | } | ||||||||
| 2405 | |||||||||
| 2406 | if (R.isAmbiguous()) | ||||||||
| 2407 | return ExprError(); | ||||||||
| 2408 | |||||||||
| 2409 | // This could be an implicitly declared function reference (legal in C90, | ||||||||
| 2410 | // extension in C99, forbidden in C++). | ||||||||
| 2411 | if (R.empty() && HasTrailingLParen && II && !getLangOpts().CPlusPlus) { | ||||||||
| 2412 | NamedDecl *D = ImplicitlyDefineFunction(NameLoc, *II, S); | ||||||||
| 2413 | if (D) R.addDecl(D); | ||||||||
| 2414 | } | ||||||||
| 2415 | |||||||||
| 2416 | // Determine whether this name might be a candidate for | ||||||||
| 2417 | // argument-dependent lookup. | ||||||||
| 2418 | bool ADL = UseArgumentDependentLookup(SS, R, HasTrailingLParen); | ||||||||
| 2419 | |||||||||
| 2420 | if (R.empty() && !ADL) { | ||||||||
| 2421 | if (SS.isEmpty() && getLangOpts().MSVCCompat) { | ||||||||
| 2422 | if (Expr *E = recoverFromMSUnqualifiedLookup(*this, Context, NameInfo, | ||||||||
| 2423 | TemplateKWLoc, TemplateArgs)) | ||||||||
| 2424 | return E; | ||||||||
| 2425 | } | ||||||||
| 2426 | |||||||||
| 2427 | // Don't diagnose an empty lookup for inline assembly. | ||||||||
| 2428 | if (IsInlineAsmIdentifier) | ||||||||
| 2429 | return ExprError(); | ||||||||
| 2430 | |||||||||
| 2431 | // If this name wasn't predeclared and if this is not a function | ||||||||
| 2432 | // call, diagnose the problem. | ||||||||
| 2433 | TypoExpr *TE = nullptr; | ||||||||
| 2434 | DefaultFilterCCC DefaultValidator(II, SS.isValid() ? SS.getScopeRep() | ||||||||
| 2435 | : nullptr); | ||||||||
| 2436 | DefaultValidator.IsAddressOfOperand = IsAddressOfOperand; | ||||||||
| 2437 | assert((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) &&(((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured") ? static_cast<void > (0) : __assert_fail ("(!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && \"Typo correction callback misconfigured\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2438, __PRETTY_FUNCTION__)) | ||||||||
| 2438 | "Typo correction callback misconfigured")(((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured") ? static_cast<void > (0) : __assert_fail ("(!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && \"Typo correction callback misconfigured\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2438, __PRETTY_FUNCTION__)); | ||||||||
| 2439 | if (CCC) { | ||||||||
| 2440 | // Make sure the callback knows what the typo being diagnosed is. | ||||||||
| 2441 | CCC->setTypoName(II); | ||||||||
| 2442 | if (SS.isValid()) | ||||||||
| 2443 | CCC->setTypoNNS(SS.getScopeRep()); | ||||||||
| 2444 | } | ||||||||
| 2445 | // FIXME: DiagnoseEmptyLookup produces bad diagnostics if we're looking for | ||||||||
| 2446 | // a template name, but we happen to have always already looked up the name | ||||||||
| 2447 | // before we get here if it must be a template name. | ||||||||
| 2448 | if (DiagnoseEmptyLookup(S, SS, R, CCC ? *CCC : DefaultValidator, nullptr, | ||||||||
| 2449 | None, &TE)) { | ||||||||
| 2450 | if (TE && KeywordReplacement) { | ||||||||
| 2451 | auto &State = getTypoExprState(TE); | ||||||||
| 2452 | auto BestTC = State.Consumer->getNextCorrection(); | ||||||||
| 2453 | if (BestTC.isKeyword()) { | ||||||||
| 2454 | auto *II = BestTC.getCorrectionAsIdentifierInfo(); | ||||||||
| 2455 | if (State.DiagHandler) | ||||||||
| 2456 | State.DiagHandler(BestTC); | ||||||||
| 2457 | KeywordReplacement->startToken(); | ||||||||
| 2458 | KeywordReplacement->setKind(II->getTokenID()); | ||||||||
| 2459 | KeywordReplacement->setIdentifierInfo(II); | ||||||||
| 2460 | KeywordReplacement->setLocation(BestTC.getCorrectionRange().getBegin()); | ||||||||
| 2461 | // Clean up the state associated with the TypoExpr, since it has | ||||||||
| 2462 | // now been diagnosed (without a call to CorrectDelayedTyposInExpr). | ||||||||
| 2463 | clearDelayedTypo(TE); | ||||||||
| 2464 | // Signal that a correction to a keyword was performed by returning a | ||||||||
| 2465 | // valid-but-null ExprResult. | ||||||||
| 2466 | return (Expr*)nullptr; | ||||||||
| 2467 | } | ||||||||
| 2468 | State.Consumer->resetCorrectionStream(); | ||||||||
| 2469 | } | ||||||||
| 2470 | return TE ? TE : ExprError(); | ||||||||
| 2471 | } | ||||||||
| 2472 | |||||||||
| 2473 | assert(!R.empty() &&((!R.empty() && "DiagnoseEmptyLookup returned false but added no results" ) ? static_cast<void> (0) : __assert_fail ("!R.empty() && \"DiagnoseEmptyLookup returned false but added no results\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2474, __PRETTY_FUNCTION__)) | ||||||||
| 2474 | "DiagnoseEmptyLookup returned false but added no results")((!R.empty() && "DiagnoseEmptyLookup returned false but added no results" ) ? static_cast<void> (0) : __assert_fail ("!R.empty() && \"DiagnoseEmptyLookup returned false but added no results\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2474, __PRETTY_FUNCTION__)); | ||||||||
| 2475 | |||||||||
| 2476 | // If we found an Objective-C instance variable, let | ||||||||
| 2477 | // LookupInObjCMethod build the appropriate expression to | ||||||||
| 2478 | // reference the ivar. | ||||||||
| 2479 | if (ObjCIvarDecl *Ivar = R.getAsSingle<ObjCIvarDecl>()) { | ||||||||
| 2480 | R.clear(); | ||||||||
| 2481 | ExprResult E(LookupInObjCMethod(R, S, Ivar->getIdentifier())); | ||||||||
| 2482 | // In a hopelessly buggy code, Objective-C instance variable | ||||||||
| 2483 | // lookup fails and no expression will be built to reference it. | ||||||||
| 2484 | if (!E.isInvalid() && !E.get()) | ||||||||
| 2485 | return ExprError(); | ||||||||
| 2486 | return E; | ||||||||
| 2487 | } | ||||||||
| 2488 | } | ||||||||
| 2489 | |||||||||
| 2490 | // This is guaranteed from this point on. | ||||||||
| 2491 | assert(!R.empty() || ADL)((!R.empty() || ADL) ? static_cast<void> (0) : __assert_fail ("!R.empty() || ADL", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2491, __PRETTY_FUNCTION__)); | ||||||||
| 2492 | |||||||||
| 2493 | // Check whether this might be a C++ implicit instance member access. | ||||||||
| 2494 | // C++ [class.mfct.non-static]p3: | ||||||||
| 2495 | // When an id-expression that is not part of a class member access | ||||||||
| 2496 | // syntax and not used to form a pointer to member is used in the | ||||||||
| 2497 | // body of a non-static member function of class X, if name lookup | ||||||||
| 2498 | // resolves the name in the id-expression to a non-static non-type | ||||||||
| 2499 | // member of some class C, the id-expression is transformed into a | ||||||||
| 2500 | // class member access expression using (*this) as the | ||||||||
| 2501 | // postfix-expression to the left of the . operator. | ||||||||
| 2502 | // | ||||||||
| 2503 | // But we don't actually need to do this for '&' operands if R | ||||||||
| 2504 | // resolved to a function or overloaded function set, because the | ||||||||
| 2505 | // expression is ill-formed if it actually works out to be a | ||||||||
| 2506 | // non-static member function: | ||||||||
| 2507 | // | ||||||||
| 2508 | // C++ [expr.ref]p4: | ||||||||
| 2509 | // Otherwise, if E1.E2 refers to a non-static member function. . . | ||||||||
| 2510 | // [t]he expression can be used only as the left-hand operand of a | ||||||||
| 2511 | // member function call. | ||||||||
| 2512 | // | ||||||||
| 2513 | // There are other safeguards against such uses, but it's important | ||||||||
| 2514 | // to get this right here so that we don't end up making a | ||||||||
| 2515 | // spuriously dependent expression if we're inside a dependent | ||||||||
| 2516 | // instance method. | ||||||||
| 2517 | if (!R.empty() && (*R.begin())->isCXXClassMember()) { | ||||||||
| 2518 | bool MightBeImplicitMember; | ||||||||
| 2519 | if (!IsAddressOfOperand) | ||||||||
| 2520 | MightBeImplicitMember = true; | ||||||||
| 2521 | else if (!SS.isEmpty()) | ||||||||
| 2522 | MightBeImplicitMember = false; | ||||||||
| 2523 | else if (R.isOverloadedResult()) | ||||||||
| 2524 | MightBeImplicitMember = false; | ||||||||
| 2525 | else if (R.isUnresolvableResult()) | ||||||||
| 2526 | MightBeImplicitMember = true; | ||||||||
| 2527 | else | ||||||||
| 2528 | MightBeImplicitMember = isa<FieldDecl>(R.getFoundDecl()) || | ||||||||
| 2529 | isa<IndirectFieldDecl>(R.getFoundDecl()) || | ||||||||
| 2530 | isa<MSPropertyDecl>(R.getFoundDecl()); | ||||||||
| 2531 | |||||||||
| 2532 | if (MightBeImplicitMember) | ||||||||
| 2533 | return BuildPossibleImplicitMemberExpr(SS, TemplateKWLoc, | ||||||||
| 2534 | R, TemplateArgs, S); | ||||||||
| 2535 | } | ||||||||
| 2536 | |||||||||
| 2537 | if (TemplateArgs || TemplateKWLoc.isValid()) { | ||||||||
| 2538 | |||||||||
| 2539 | // In C++1y, if this is a variable template id, then check it | ||||||||
| 2540 | // in BuildTemplateIdExpr(). | ||||||||
| 2541 | // The single lookup result must be a variable template declaration. | ||||||||
| 2542 | if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId && Id.TemplateId && | ||||||||
| 2543 | Id.TemplateId->Kind == TNK_Var_template) { | ||||||||
| 2544 | assert(R.getAsSingle<VarTemplateDecl>() &&((R.getAsSingle<VarTemplateDecl>() && "There should only be one declaration found." ) ? static_cast<void> (0) : __assert_fail ("R.getAsSingle<VarTemplateDecl>() && \"There should only be one declaration found.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2545, __PRETTY_FUNCTION__)) | ||||||||
| 2545 | "There should only be one declaration found.")((R.getAsSingle<VarTemplateDecl>() && "There should only be one declaration found." ) ? static_cast<void> (0) : __assert_fail ("R.getAsSingle<VarTemplateDecl>() && \"There should only be one declaration found.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2545, __PRETTY_FUNCTION__)); | ||||||||
| 2546 | } | ||||||||
| 2547 | |||||||||
| 2548 | return BuildTemplateIdExpr(SS, TemplateKWLoc, R, ADL, TemplateArgs); | ||||||||
| 2549 | } | ||||||||
| 2550 | |||||||||
| 2551 | return BuildDeclarationNameExpr(SS, R, ADL); | ||||||||
| 2552 | } | ||||||||
| 2553 | |||||||||
| 2554 | /// BuildQualifiedDeclarationNameExpr - Build a C++ qualified | ||||||||
| 2555 | /// declaration name, generally during template instantiation. | ||||||||
| 2556 | /// There's a large number of things which don't need to be done along | ||||||||
| 2557 | /// this path. | ||||||||
| 2558 | ExprResult Sema::BuildQualifiedDeclarationNameExpr( | ||||||||
| 2559 | CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, | ||||||||
| 2560 | bool IsAddressOfOperand, const Scope *S, TypeSourceInfo **RecoveryTSI) { | ||||||||
| 2561 | DeclContext *DC = computeDeclContext(SS, false); | ||||||||
| 2562 | if (!DC) | ||||||||
| 2563 | return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), | ||||||||
| 2564 | NameInfo, /*TemplateArgs=*/nullptr); | ||||||||
| 2565 | |||||||||
| 2566 | if (RequireCompleteDeclContext(SS, DC)) | ||||||||
| 2567 | return ExprError(); | ||||||||
| 2568 | |||||||||
| 2569 | LookupResult R(*this, NameInfo, LookupOrdinaryName); | ||||||||
| 2570 | LookupQualifiedName(R, DC); | ||||||||
| 2571 | |||||||||
| 2572 | if (R.isAmbiguous()) | ||||||||
| 2573 | return ExprError(); | ||||||||
| 2574 | |||||||||
| 2575 | if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) | ||||||||
| 2576 | return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), | ||||||||
| 2577 | NameInfo, /*TemplateArgs=*/nullptr); | ||||||||
| 2578 | |||||||||
| 2579 | if (R.empty()) { | ||||||||
| 2580 | Diag(NameInfo.getLoc(), diag::err_no_member) | ||||||||
| 2581 | << NameInfo.getName() << DC << SS.getRange(); | ||||||||
| 2582 | return ExprError(); | ||||||||
| 2583 | } | ||||||||
| 2584 | |||||||||
| 2585 | if (const TypeDecl *TD = R.getAsSingle<TypeDecl>()) { | ||||||||
| 2586 | // Diagnose a missing typename if this resolved unambiguously to a type in | ||||||||
| 2587 | // a dependent context. If we can recover with a type, downgrade this to | ||||||||
| 2588 | // a warning in Microsoft compatibility mode. | ||||||||
| 2589 | unsigned DiagID = diag::err_typename_missing; | ||||||||
| 2590 | if (RecoveryTSI && getLangOpts().MSVCCompat) | ||||||||
| 2591 | DiagID = diag::ext_typename_missing; | ||||||||
| 2592 | SourceLocation Loc = SS.getBeginLoc(); | ||||||||
| 2593 | auto D = Diag(Loc, DiagID); | ||||||||
| 2594 | D << SS.getScopeRep() << NameInfo.getName().getAsString() | ||||||||
| 2595 | << SourceRange(Loc, NameInfo.getEndLoc()); | ||||||||
| 2596 | |||||||||
| 2597 | // Don't recover if the caller isn't expecting us to or if we're in a SFINAE | ||||||||
| 2598 | // context. | ||||||||
| 2599 | if (!RecoveryTSI) | ||||||||
| 2600 | return ExprError(); | ||||||||
| 2601 | |||||||||
| 2602 | // Only issue the fixit if we're prepared to recover. | ||||||||
| 2603 | D << FixItHint::CreateInsertion(Loc, "typename "); | ||||||||
| 2604 | |||||||||
| 2605 | // Recover by pretending this was an elaborated type. | ||||||||
| 2606 | QualType Ty = Context.getTypeDeclType(TD); | ||||||||
| 2607 | TypeLocBuilder TLB; | ||||||||
| 2608 | TLB.pushTypeSpec(Ty).setNameLoc(NameInfo.getLoc()); | ||||||||
| 2609 | |||||||||
| 2610 | QualType ET = getElaboratedType(ETK_None, SS, Ty); | ||||||||
| 2611 | ElaboratedTypeLoc QTL = TLB.push<ElaboratedTypeLoc>(ET); | ||||||||
| 2612 | QTL.setElaboratedKeywordLoc(SourceLocation()); | ||||||||
| 2613 | QTL.setQualifierLoc(SS.getWithLocInContext(Context)); | ||||||||
| 2614 | |||||||||
| 2615 | *RecoveryTSI = TLB.getTypeSourceInfo(Context, ET); | ||||||||
| 2616 | |||||||||
| 2617 | return ExprEmpty(); | ||||||||
| 2618 | } | ||||||||
| 2619 | |||||||||
| 2620 | // Defend against this resolving to an implicit member access. We usually | ||||||||
| 2621 | // won't get here if this might be a legitimate a class member (we end up in | ||||||||
| 2622 | // BuildMemberReferenceExpr instead), but this can be valid if we're forming | ||||||||
| 2623 | // a pointer-to-member or in an unevaluated context in C++11. | ||||||||
| 2624 | if (!R.empty() && (*R.begin())->isCXXClassMember() && !IsAddressOfOperand) | ||||||||
| 2625 | return BuildPossibleImplicitMemberExpr(SS, | ||||||||
| 2626 | /*TemplateKWLoc=*/SourceLocation(), | ||||||||
| 2627 | R, /*TemplateArgs=*/nullptr, S); | ||||||||
| 2628 | |||||||||
| 2629 | return BuildDeclarationNameExpr(SS, R, /* ADL */ false); | ||||||||
| 2630 | } | ||||||||
| 2631 | |||||||||
| 2632 | /// The parser has read a name in, and Sema has detected that we're currently | ||||||||
| 2633 | /// inside an ObjC method. Perform some additional checks and determine if we | ||||||||
| 2634 | /// should form a reference to an ivar. | ||||||||
| 2635 | /// | ||||||||
| 2636 | /// Ideally, most of this would be done by lookup, but there's | ||||||||
| 2637 | /// actually quite a lot of extra work involved. | ||||||||
| 2638 | DeclResult Sema::LookupIvarInObjCMethod(LookupResult &Lookup, Scope *S, | ||||||||
| 2639 | IdentifierInfo *II) { | ||||||||
| 2640 | SourceLocation Loc = Lookup.getNameLoc(); | ||||||||
| 2641 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | ||||||||
| 2642 | |||||||||
| 2643 | // Check for error condition which is already reported. | ||||||||
| 2644 | if (!CurMethod) | ||||||||
| 2645 | return DeclResult(true); | ||||||||
| 2646 | |||||||||
| 2647 | // There are two cases to handle here. 1) scoped lookup could have failed, | ||||||||
| 2648 | // in which case we should look for an ivar. 2) scoped lookup could have | ||||||||
| 2649 | // found a decl, but that decl is outside the current instance method (i.e. | ||||||||
| 2650 | // a global variable). In these two cases, we do a lookup for an ivar with | ||||||||
| 2651 | // this name, if the lookup sucedes, we replace it our current decl. | ||||||||
| 2652 | |||||||||
| 2653 | // If we're in a class method, we don't normally want to look for | ||||||||
| 2654 | // ivars. But if we don't find anything else, and there's an | ||||||||
| 2655 | // ivar, that's an error. | ||||||||
| 2656 | bool IsClassMethod = CurMethod->isClassMethod(); | ||||||||
| 2657 | |||||||||
| 2658 | bool LookForIvars; | ||||||||
| 2659 | if (Lookup.empty()) | ||||||||
| 2660 | LookForIvars = true; | ||||||||
| 2661 | else if (IsClassMethod) | ||||||||
| 2662 | LookForIvars = false; | ||||||||
| 2663 | else | ||||||||
| 2664 | LookForIvars = (Lookup.isSingleResult() && | ||||||||
| 2665 | Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()); | ||||||||
| 2666 | ObjCInterfaceDecl *IFace = nullptr; | ||||||||
| 2667 | if (LookForIvars) { | ||||||||
| 2668 | IFace = CurMethod->getClassInterface(); | ||||||||
| 2669 | ObjCInterfaceDecl *ClassDeclared; | ||||||||
| 2670 | ObjCIvarDecl *IV = nullptr; | ||||||||
| 2671 | if (IFace && (IV = IFace->lookupInstanceVariable(II, ClassDeclared))) { | ||||||||
| 2672 | // Diagnose using an ivar in a class method. | ||||||||
| 2673 | if (IsClassMethod) { | ||||||||
| 2674 | Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); | ||||||||
| 2675 | return DeclResult(true); | ||||||||
| 2676 | } | ||||||||
| 2677 | |||||||||
| 2678 | // Diagnose the use of an ivar outside of the declaring class. | ||||||||
| 2679 | if (IV->getAccessControl() == ObjCIvarDecl::Private && | ||||||||
| 2680 | !declaresSameEntity(ClassDeclared, IFace) && | ||||||||
| 2681 | !getLangOpts().DebuggerSupport) | ||||||||
| 2682 | Diag(Loc, diag::err_private_ivar_access) << IV->getDeclName(); | ||||||||
| 2683 | |||||||||
| 2684 | // Success. | ||||||||
| 2685 | return IV; | ||||||||
| 2686 | } | ||||||||
| 2687 | } else if (CurMethod->isInstanceMethod()) { | ||||||||
| 2688 | // We should warn if a local variable hides an ivar. | ||||||||
| 2689 | if (ObjCInterfaceDecl *IFace = CurMethod->getClassInterface()) { | ||||||||
| 2690 | ObjCInterfaceDecl *ClassDeclared; | ||||||||
| 2691 | if (ObjCIvarDecl *IV = IFace->lookupInstanceVariable(II, ClassDeclared)) { | ||||||||
| 2692 | if (IV->getAccessControl() != ObjCIvarDecl::Private || | ||||||||
| 2693 | declaresSameEntity(IFace, ClassDeclared)) | ||||||||
| 2694 | Diag(Loc, diag::warn_ivar_use_hidden) << IV->getDeclName(); | ||||||||
| 2695 | } | ||||||||
| 2696 | } | ||||||||
| 2697 | } else if (Lookup.isSingleResult() && | ||||||||
| 2698 | Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()) { | ||||||||
| 2699 | // If accessing a stand-alone ivar in a class method, this is an error. | ||||||||
| 2700 | if (const ObjCIvarDecl *IV = | ||||||||
| 2701 | dyn_cast<ObjCIvarDecl>(Lookup.getFoundDecl())) { | ||||||||
| 2702 | Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); | ||||||||
| 2703 | return DeclResult(true); | ||||||||
| 2704 | } | ||||||||
| 2705 | } | ||||||||
| 2706 | |||||||||
| 2707 | // Didn't encounter an error, didn't find an ivar. | ||||||||
| 2708 | return DeclResult(false); | ||||||||
| 2709 | } | ||||||||
| 2710 | |||||||||
| 2711 | ExprResult Sema::BuildIvarRefExpr(Scope *S, SourceLocation Loc, | ||||||||
| 2712 | ObjCIvarDecl *IV) { | ||||||||
| 2713 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | ||||||||
| 2714 | assert(CurMethod && CurMethod->isInstanceMethod() &&((CurMethod && CurMethod->isInstanceMethod() && "should not reference ivar from this context") ? static_cast <void> (0) : __assert_fail ("CurMethod && CurMethod->isInstanceMethod() && \"should not reference ivar from this context\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2715, __PRETTY_FUNCTION__)) | ||||||||
| 2715 | "should not reference ivar from this context")((CurMethod && CurMethod->isInstanceMethod() && "should not reference ivar from this context") ? static_cast <void> (0) : __assert_fail ("CurMethod && CurMethod->isInstanceMethod() && \"should not reference ivar from this context\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2715, __PRETTY_FUNCTION__)); | ||||||||
| 2716 | |||||||||
| 2717 | ObjCInterfaceDecl *IFace = CurMethod->getClassInterface(); | ||||||||
| 2718 | assert(IFace && "should not reference ivar from this context")((IFace && "should not reference ivar from this context" ) ? static_cast<void> (0) : __assert_fail ("IFace && \"should not reference ivar from this context\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2718, __PRETTY_FUNCTION__)); | ||||||||
| 2719 | |||||||||
| 2720 | // If we're referencing an invalid decl, just return this as a silent | ||||||||
| 2721 | // error node. The error diagnostic was already emitted on the decl. | ||||||||
| 2722 | if (IV->isInvalidDecl()) | ||||||||
| 2723 | return ExprError(); | ||||||||
| 2724 | |||||||||
| 2725 | // Check if referencing a field with __attribute__((deprecated)). | ||||||||
| 2726 | if (DiagnoseUseOfDecl(IV, Loc)) | ||||||||
| 2727 | return ExprError(); | ||||||||
| 2728 | |||||||||
| 2729 | // FIXME: This should use a new expr for a direct reference, don't | ||||||||
| 2730 | // turn this into Self->ivar, just return a BareIVarExpr or something. | ||||||||
| 2731 | IdentifierInfo &II = Context.Idents.get("self"); | ||||||||
| 2732 | UnqualifiedId SelfName; | ||||||||
| 2733 | SelfName.setIdentifier(&II, SourceLocation()); | ||||||||
| 2734 | SelfName.setKind(UnqualifiedIdKind::IK_ImplicitSelfParam); | ||||||||
| 2735 | CXXScopeSpec SelfScopeSpec; | ||||||||
| 2736 | SourceLocation TemplateKWLoc; | ||||||||
| 2737 | ExprResult SelfExpr = | ||||||||
| 2738 | ActOnIdExpression(S, SelfScopeSpec, TemplateKWLoc, SelfName, | ||||||||
| 2739 | /*HasTrailingLParen=*/false, | ||||||||
| 2740 | /*IsAddressOfOperand=*/false); | ||||||||
| 2741 | if (SelfExpr.isInvalid()) | ||||||||
| 2742 | return ExprError(); | ||||||||
| 2743 | |||||||||
| 2744 | SelfExpr = DefaultLvalueConversion(SelfExpr.get()); | ||||||||
| 2745 | if (SelfExpr.isInvalid()) | ||||||||
| 2746 | return ExprError(); | ||||||||
| 2747 | |||||||||
| 2748 | MarkAnyDeclReferenced(Loc, IV, true); | ||||||||
| 2749 | |||||||||
| 2750 | ObjCMethodFamily MF = CurMethod->getMethodFamily(); | ||||||||
| 2751 | if (MF != OMF_init && MF != OMF_dealloc && MF != OMF_finalize && | ||||||||
| 2752 | !IvarBacksCurrentMethodAccessor(IFace, CurMethod, IV)) | ||||||||
| 2753 | Diag(Loc, diag::warn_direct_ivar_access) << IV->getDeclName(); | ||||||||
| 2754 | |||||||||
| 2755 | ObjCIvarRefExpr *Result = new (Context) | ||||||||
| 2756 | ObjCIvarRefExpr(IV, IV->getUsageType(SelfExpr.get()->getType()), Loc, | ||||||||
| 2757 | IV->getLocation(), SelfExpr.get(), true, true); | ||||||||
| 2758 | |||||||||
| 2759 | if (IV->getType().getObjCLifetime() == Qualifiers::OCL_Weak) { | ||||||||
| 2760 | if (!isUnevaluatedContext() && | ||||||||
| 2761 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) | ||||||||
| 2762 | getCurFunction()->recordUseOfWeak(Result); | ||||||||
| 2763 | } | ||||||||
| 2764 | if (getLangOpts().ObjCAutoRefCount) | ||||||||
| 2765 | if (const BlockDecl *BD = CurContext->getInnermostBlockDecl()) | ||||||||
| 2766 | ImplicitlyRetainedSelfLocs.push_back({Loc, BD}); | ||||||||
| 2767 | |||||||||
| 2768 | return Result; | ||||||||
| 2769 | } | ||||||||
| 2770 | |||||||||
| 2771 | /// The parser has read a name in, and Sema has detected that we're currently | ||||||||
| 2772 | /// inside an ObjC method. Perform some additional checks and determine if we | ||||||||
| 2773 | /// should form a reference to an ivar. If so, build an expression referencing | ||||||||
| 2774 | /// that ivar. | ||||||||
| 2775 | ExprResult | ||||||||
| 2776 | Sema::LookupInObjCMethod(LookupResult &Lookup, Scope *S, | ||||||||
| 2777 | IdentifierInfo *II, bool AllowBuiltinCreation) { | ||||||||
| 2778 | // FIXME: Integrate this lookup step into LookupParsedName. | ||||||||
| 2779 | DeclResult Ivar = LookupIvarInObjCMethod(Lookup, S, II); | ||||||||
| 2780 | if (Ivar.isInvalid()) | ||||||||
| 2781 | return ExprError(); | ||||||||
| 2782 | if (Ivar.isUsable()) | ||||||||
| 2783 | return BuildIvarRefExpr(S, Lookup.getNameLoc(), | ||||||||
| 2784 | cast<ObjCIvarDecl>(Ivar.get())); | ||||||||
| 2785 | |||||||||
| 2786 | if (Lookup.empty() && II && AllowBuiltinCreation) | ||||||||
| 2787 | LookupBuiltin(Lookup); | ||||||||
| 2788 | |||||||||
| 2789 | // Sentinel value saying that we didn't do anything special. | ||||||||
| 2790 | return ExprResult(false); | ||||||||
| 2791 | } | ||||||||
| 2792 | |||||||||
| 2793 | /// Cast a base object to a member's actual type. | ||||||||
| 2794 | /// | ||||||||
| 2795 | /// Logically this happens in three phases: | ||||||||
| 2796 | /// | ||||||||
| 2797 | /// * First we cast from the base type to the naming class. | ||||||||
| 2798 | /// The naming class is the class into which we were looking | ||||||||
| 2799 | /// when we found the member; it's the qualifier type if a | ||||||||
| 2800 | /// qualifier was provided, and otherwise it's the base type. | ||||||||
| 2801 | /// | ||||||||
| 2802 | /// * Next we cast from the naming class to the declaring class. | ||||||||
| 2803 | /// If the member we found was brought into a class's scope by | ||||||||
| 2804 | /// a using declaration, this is that class; otherwise it's | ||||||||
| 2805 | /// the class declaring the member. | ||||||||
| 2806 | /// | ||||||||
| 2807 | /// * Finally we cast from the declaring class to the "true" | ||||||||
| 2808 | /// declaring class of the member. This conversion does not | ||||||||
| 2809 | /// obey access control. | ||||||||
| 2810 | ExprResult | ||||||||
| 2811 | Sema::PerformObjectMemberConversion(Expr *From, | ||||||||
| 2812 | NestedNameSpecifier *Qualifier, | ||||||||
| 2813 | NamedDecl *FoundDecl, | ||||||||
| 2814 | NamedDecl *Member) { | ||||||||
| 2815 | CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(Member->getDeclContext()); | ||||||||
| 2816 | if (!RD) | ||||||||
| 2817 | return From; | ||||||||
| 2818 | |||||||||
| 2819 | QualType DestRecordType; | ||||||||
| 2820 | QualType DestType; | ||||||||
| 2821 | QualType FromRecordType; | ||||||||
| 2822 | QualType FromType = From->getType(); | ||||||||
| 2823 | bool PointerConversions = false; | ||||||||
| 2824 | if (isa<FieldDecl>(Member)) { | ||||||||
| 2825 | DestRecordType = Context.getCanonicalType(Context.getTypeDeclType(RD)); | ||||||||
| 2826 | auto FromPtrType = FromType->getAs<PointerType>(); | ||||||||
| 2827 | DestRecordType = Context.getAddrSpaceQualType( | ||||||||
| 2828 | DestRecordType, FromPtrType | ||||||||
| 2829 | ? FromType->getPointeeType().getAddressSpace() | ||||||||
| 2830 | : FromType.getAddressSpace()); | ||||||||
| 2831 | |||||||||
| 2832 | if (FromPtrType) { | ||||||||
| 2833 | DestType = Context.getPointerType(DestRecordType); | ||||||||
| 2834 | FromRecordType = FromPtrType->getPointeeType(); | ||||||||
| 2835 | PointerConversions = true; | ||||||||
| 2836 | } else { | ||||||||
| 2837 | DestType = DestRecordType; | ||||||||
| 2838 | FromRecordType = FromType; | ||||||||
| 2839 | } | ||||||||
| 2840 | } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Member)) { | ||||||||
| 2841 | if (Method->isStatic()) | ||||||||
| 2842 | return From; | ||||||||
| 2843 | |||||||||
| 2844 | DestType = Method->getThisType(); | ||||||||
| 2845 | DestRecordType = DestType->getPointeeType(); | ||||||||
| 2846 | |||||||||
| 2847 | if (FromType->getAs<PointerType>()) { | ||||||||
| 2848 | FromRecordType = FromType->getPointeeType(); | ||||||||
| 2849 | PointerConversions = true; | ||||||||
| 2850 | } else { | ||||||||
| 2851 | FromRecordType = FromType; | ||||||||
| 2852 | DestType = DestRecordType; | ||||||||
| 2853 | } | ||||||||
| 2854 | |||||||||
| 2855 | LangAS FromAS = FromRecordType.getAddressSpace(); | ||||||||
| 2856 | LangAS DestAS = DestRecordType.getAddressSpace(); | ||||||||
| 2857 | if (FromAS != DestAS) { | ||||||||
| 2858 | QualType FromRecordTypeWithoutAS = | ||||||||
| 2859 | Context.removeAddrSpaceQualType(FromRecordType); | ||||||||
| 2860 | QualType FromTypeWithDestAS = | ||||||||
| 2861 | Context.getAddrSpaceQualType(FromRecordTypeWithoutAS, DestAS); | ||||||||
| 2862 | if (PointerConversions) | ||||||||
| 2863 | FromTypeWithDestAS = Context.getPointerType(FromTypeWithDestAS); | ||||||||
| 2864 | From = ImpCastExprToType(From, FromTypeWithDestAS, | ||||||||
| 2865 | CK_AddressSpaceConversion, From->getValueKind()) | ||||||||
| 2866 | .get(); | ||||||||
| 2867 | } | ||||||||
| 2868 | } else { | ||||||||
| 2869 | // No conversion necessary. | ||||||||
| 2870 | return From; | ||||||||
| 2871 | } | ||||||||
| 2872 | |||||||||
| 2873 | if (DestType->isDependentType() || FromType->isDependentType()) | ||||||||
| 2874 | return From; | ||||||||
| 2875 | |||||||||
| 2876 | // If the unqualified types are the same, no conversion is necessary. | ||||||||
| 2877 | if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) | ||||||||
| 2878 | return From; | ||||||||
| 2879 | |||||||||
| 2880 | SourceRange FromRange = From->getSourceRange(); | ||||||||
| 2881 | SourceLocation FromLoc = FromRange.getBegin(); | ||||||||
| 2882 | |||||||||
| 2883 | ExprValueKind VK = From->getValueKind(); | ||||||||
| 2884 | |||||||||
| 2885 | // C++ [class.member.lookup]p8: | ||||||||
| 2886 | // [...] Ambiguities can often be resolved by qualifying a name with its | ||||||||
| 2887 | // class name. | ||||||||
| 2888 | // | ||||||||
| 2889 | // If the member was a qualified name and the qualified referred to a | ||||||||
| 2890 | // specific base subobject type, we'll cast to that intermediate type | ||||||||
| 2891 | // first and then to the object in which the member is declared. That allows | ||||||||
| 2892 | // one to resolve ambiguities in, e.g., a diamond-shaped hierarchy such as: | ||||||||
| 2893 | // | ||||||||
| 2894 | // class Base { public: int x; }; | ||||||||
| 2895 | // class Derived1 : public Base { }; | ||||||||
| 2896 | // class Derived2 : public Base { }; | ||||||||
| 2897 | // class VeryDerived : public Derived1, public Derived2 { void f(); }; | ||||||||
| 2898 | // | ||||||||
| 2899 | // void VeryDerived::f() { | ||||||||
| 2900 | // x = 17; // error: ambiguous base subobjects | ||||||||
| 2901 | // Derived1::x = 17; // okay, pick the Base subobject of Derived1 | ||||||||
| 2902 | // } | ||||||||
| 2903 | if (Qualifier && Qualifier->getAsType()) { | ||||||||
| 2904 | QualType QType = QualType(Qualifier->getAsType(), 0); | ||||||||
| 2905 | assert(QType->isRecordType() && "lookup done with non-record type")((QType->isRecordType() && "lookup done with non-record type" ) ? static_cast<void> (0) : __assert_fail ("QType->isRecordType() && \"lookup done with non-record type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2905, __PRETTY_FUNCTION__)); | ||||||||
| 2906 | |||||||||
| 2907 | QualType QRecordType = QualType(QType->getAs<RecordType>(), 0); | ||||||||
| 2908 | |||||||||
| 2909 | // In C++98, the qualifier type doesn't actually have to be a base | ||||||||
| 2910 | // type of the object type, in which case we just ignore it. | ||||||||
| 2911 | // Otherwise build the appropriate casts. | ||||||||
| 2912 | if (IsDerivedFrom(FromLoc, FromRecordType, QRecordType)) { | ||||||||
| 2913 | CXXCastPath BasePath; | ||||||||
| 2914 | if (CheckDerivedToBaseConversion(FromRecordType, QRecordType, | ||||||||
| 2915 | FromLoc, FromRange, &BasePath)) | ||||||||
| 2916 | return ExprError(); | ||||||||
| 2917 | |||||||||
| 2918 | if (PointerConversions) | ||||||||
| 2919 | QType = Context.getPointerType(QType); | ||||||||
| 2920 | From = ImpCastExprToType(From, QType, CK_UncheckedDerivedToBase, | ||||||||
| 2921 | VK, &BasePath).get(); | ||||||||
| 2922 | |||||||||
| 2923 | FromType = QType; | ||||||||
| 2924 | FromRecordType = QRecordType; | ||||||||
| 2925 | |||||||||
| 2926 | // If the qualifier type was the same as the destination type, | ||||||||
| 2927 | // we're done. | ||||||||
| 2928 | if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) | ||||||||
| 2929 | return From; | ||||||||
| 2930 | } | ||||||||
| 2931 | } | ||||||||
| 2932 | |||||||||
| 2933 | bool IgnoreAccess = false; | ||||||||
| 2934 | |||||||||
| 2935 | // If we actually found the member through a using declaration, cast | ||||||||
| 2936 | // down to the using declaration's type. | ||||||||
| 2937 | // | ||||||||
| 2938 | // Pointer equality is fine here because only one declaration of a | ||||||||
| 2939 | // class ever has member declarations. | ||||||||
| 2940 | if (FoundDecl->getDeclContext() != Member->getDeclContext()) { | ||||||||
| 2941 | assert(isa<UsingShadowDecl>(FoundDecl))((isa<UsingShadowDecl>(FoundDecl)) ? static_cast<void > (0) : __assert_fail ("isa<UsingShadowDecl>(FoundDecl)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2941, __PRETTY_FUNCTION__)); | ||||||||
| 2942 | QualType URecordType = Context.getTypeDeclType( | ||||||||
| 2943 | cast<CXXRecordDecl>(FoundDecl->getDeclContext())); | ||||||||
| 2944 | |||||||||
| 2945 | // We only need to do this if the naming-class to declaring-class | ||||||||
| 2946 | // conversion is non-trivial. | ||||||||
| 2947 | if (!Context.hasSameUnqualifiedType(FromRecordType, URecordType)) { | ||||||||
| 2948 | assert(IsDerivedFrom(FromLoc, FromRecordType, URecordType))((IsDerivedFrom(FromLoc, FromRecordType, URecordType)) ? static_cast <void> (0) : __assert_fail ("IsDerivedFrom(FromLoc, FromRecordType, URecordType)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 2948, __PRETTY_FUNCTION__)); | ||||||||
| 2949 | CXXCastPath BasePath; | ||||||||
| 2950 | if (CheckDerivedToBaseConversion(FromRecordType, URecordType, | ||||||||
| 2951 | FromLoc, FromRange, &BasePath)) | ||||||||
| 2952 | return ExprError(); | ||||||||
| 2953 | |||||||||
| 2954 | QualType UType = URecordType; | ||||||||
| 2955 | if (PointerConversions) | ||||||||
| 2956 | UType = Context.getPointerType(UType); | ||||||||
| 2957 | From = ImpCastExprToType(From, UType, CK_UncheckedDerivedToBase, | ||||||||
| 2958 | VK, &BasePath).get(); | ||||||||
| 2959 | FromType = UType; | ||||||||
| 2960 | FromRecordType = URecordType; | ||||||||
| 2961 | } | ||||||||
| 2962 | |||||||||
| 2963 | // We don't do access control for the conversion from the | ||||||||
| 2964 | // declaring class to the true declaring class. | ||||||||
| 2965 | IgnoreAccess = true; | ||||||||
| 2966 | } | ||||||||
| 2967 | |||||||||
| 2968 | CXXCastPath BasePath; | ||||||||
| 2969 | if (CheckDerivedToBaseConversion(FromRecordType, DestRecordType, | ||||||||
| 2970 | FromLoc, FromRange, &BasePath, | ||||||||
| 2971 | IgnoreAccess)) | ||||||||
| 2972 | return ExprError(); | ||||||||
| 2973 | |||||||||
| 2974 | return ImpCastExprToType(From, DestType, CK_UncheckedDerivedToBase, | ||||||||
| 2975 | VK, &BasePath); | ||||||||
| 2976 | } | ||||||||
| 2977 | |||||||||
| 2978 | bool Sema::UseArgumentDependentLookup(const CXXScopeSpec &SS, | ||||||||
| 2979 | const LookupResult &R, | ||||||||
| 2980 | bool HasTrailingLParen) { | ||||||||
| 2981 | // Only when used directly as the postfix-expression of a call. | ||||||||
| 2982 | if (!HasTrailingLParen) | ||||||||
| 2983 | return false; | ||||||||
| 2984 | |||||||||
| 2985 | // Never if a scope specifier was provided. | ||||||||
| 2986 | if (SS.isSet()) | ||||||||
| 2987 | return false; | ||||||||
| 2988 | |||||||||
| 2989 | // Only in C++ or ObjC++. | ||||||||
| 2990 | if (!getLangOpts().CPlusPlus) | ||||||||
| 2991 | return false; | ||||||||
| 2992 | |||||||||
| 2993 | // Turn off ADL when we find certain kinds of declarations during | ||||||||
| 2994 | // normal lookup: | ||||||||
| 2995 | for (NamedDecl *D : R) { | ||||||||
| 2996 | // C++0x [basic.lookup.argdep]p3: | ||||||||
| 2997 | // -- a declaration of a class member | ||||||||
| 2998 | // Since using decls preserve this property, we check this on the | ||||||||
| 2999 | // original decl. | ||||||||
| 3000 | if (D->isCXXClassMember()) | ||||||||
| 3001 | return false; | ||||||||
| 3002 | |||||||||
| 3003 | // C++0x [basic.lookup.argdep]p3: | ||||||||
| 3004 | // -- a block-scope function declaration that is not a | ||||||||
| 3005 | // using-declaration | ||||||||
| 3006 | // NOTE: we also trigger this for function templates (in fact, we | ||||||||
| 3007 | // don't check the decl type at all, since all other decl types | ||||||||
| 3008 | // turn off ADL anyway). | ||||||||
| 3009 | if (isa<UsingShadowDecl>(D)) | ||||||||
| 3010 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); | ||||||||
| 3011 | else if (D->getLexicalDeclContext()->isFunctionOrMethod()) | ||||||||
| 3012 | return false; | ||||||||
| 3013 | |||||||||
| 3014 | // C++0x [basic.lookup.argdep]p3: | ||||||||
| 3015 | // -- a declaration that is neither a function or a function | ||||||||
| 3016 | // template | ||||||||
| 3017 | // And also for builtin functions. | ||||||||
| 3018 | if (isa<FunctionDecl>(D)) { | ||||||||
| 3019 | FunctionDecl *FDecl = cast<FunctionDecl>(D); | ||||||||
| 3020 | |||||||||
| 3021 | // But also builtin functions. | ||||||||
| 3022 | if (FDecl->getBuiltinID() && FDecl->isImplicit()) | ||||||||
| 3023 | return false; | ||||||||
| 3024 | } else if (!isa<FunctionTemplateDecl>(D)) | ||||||||
| 3025 | return false; | ||||||||
| 3026 | } | ||||||||
| 3027 | |||||||||
| 3028 | return true; | ||||||||
| 3029 | } | ||||||||
| 3030 | |||||||||
| 3031 | |||||||||
| 3032 | /// Diagnoses obvious problems with the use of the given declaration | ||||||||
| 3033 | /// as an expression. This is only actually called for lookups that | ||||||||
| 3034 | /// were not overloaded, and it doesn't promise that the declaration | ||||||||
| 3035 | /// will in fact be used. | ||||||||
| 3036 | static bool CheckDeclInExpr(Sema &S, SourceLocation Loc, NamedDecl *D) { | ||||||||
| 3037 | if (D->isInvalidDecl()) | ||||||||
| 3038 | return true; | ||||||||
| 3039 | |||||||||
| 3040 | if (isa<TypedefNameDecl>(D)) { | ||||||||
| 3041 | S.Diag(Loc, diag::err_unexpected_typedef) << D->getDeclName(); | ||||||||
| 3042 | return true; | ||||||||
| 3043 | } | ||||||||
| 3044 | |||||||||
| 3045 | if (isa<ObjCInterfaceDecl>(D)) { | ||||||||
| 3046 | S.Diag(Loc, diag::err_unexpected_interface) << D->getDeclName(); | ||||||||
| 3047 | return true; | ||||||||
| 3048 | } | ||||||||
| 3049 | |||||||||
| 3050 | if (isa<NamespaceDecl>(D)) { | ||||||||
| 3051 | S.Diag(Loc, diag::err_unexpected_namespace) << D->getDeclName(); | ||||||||
| 3052 | return true; | ||||||||
| 3053 | } | ||||||||
| 3054 | |||||||||
| 3055 | return false; | ||||||||
| 3056 | } | ||||||||
| 3057 | |||||||||
| 3058 | // Certain multiversion types should be treated as overloaded even when there is | ||||||||
| 3059 | // only one result. | ||||||||
| 3060 | static bool ShouldLookupResultBeMultiVersionOverload(const LookupResult &R) { | ||||||||
| 3061 | assert(R.isSingleResult() && "Expected only a single result")((R.isSingleResult() && "Expected only a single result" ) ? static_cast<void> (0) : __assert_fail ("R.isSingleResult() && \"Expected only a single result\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3061, __PRETTY_FUNCTION__)); | ||||||||
| 3062 | const auto *FD = dyn_cast<FunctionDecl>(R.getFoundDecl()); | ||||||||
| 3063 | return FD && | ||||||||
| 3064 | (FD->isCPUDispatchMultiVersion() || FD->isCPUSpecificMultiVersion()); | ||||||||
| 3065 | } | ||||||||
| 3066 | |||||||||
| 3067 | ExprResult Sema::BuildDeclarationNameExpr(const CXXScopeSpec &SS, | ||||||||
| 3068 | LookupResult &R, bool NeedsADL, | ||||||||
| 3069 | bool AcceptInvalidDecl) { | ||||||||
| 3070 | // If this is a single, fully-resolved result and we don't need ADL, | ||||||||
| 3071 | // just build an ordinary singleton decl ref. | ||||||||
| 3072 | if (!NeedsADL && R.isSingleResult() && | ||||||||
| 3073 | !R.getAsSingle<FunctionTemplateDecl>() && | ||||||||
| 3074 | !ShouldLookupResultBeMultiVersionOverload(R)) | ||||||||
| 3075 | return BuildDeclarationNameExpr(SS, R.getLookupNameInfo(), R.getFoundDecl(), | ||||||||
| 3076 | R.getRepresentativeDecl(), nullptr, | ||||||||
| 3077 | AcceptInvalidDecl); | ||||||||
| 3078 | |||||||||
| 3079 | // We only need to check the declaration if there's exactly one | ||||||||
| 3080 | // result, because in the overloaded case the results can only be | ||||||||
| 3081 | // functions and function templates. | ||||||||
| 3082 | if (R.isSingleResult() && !ShouldLookupResultBeMultiVersionOverload(R) && | ||||||||
| 3083 | CheckDeclInExpr(*this, R.getNameLoc(), R.getFoundDecl())) | ||||||||
| 3084 | return ExprError(); | ||||||||
| 3085 | |||||||||
| 3086 | // Otherwise, just build an unresolved lookup expression. Suppress | ||||||||
| 3087 | // any lookup-related diagnostics; we'll hash these out later, when | ||||||||
| 3088 | // we've picked a target. | ||||||||
| 3089 | R.suppressDiagnostics(); | ||||||||
| 3090 | |||||||||
| 3091 | UnresolvedLookupExpr *ULE | ||||||||
| 3092 | = UnresolvedLookupExpr::Create(Context, R.getNamingClass(), | ||||||||
| 3093 | SS.getWithLocInContext(Context), | ||||||||
| 3094 | R.getLookupNameInfo(), | ||||||||
| 3095 | NeedsADL, R.isOverloadedResult(), | ||||||||
| 3096 | R.begin(), R.end()); | ||||||||
| 3097 | |||||||||
| 3098 | return ULE; | ||||||||
| 3099 | } | ||||||||
| 3100 | |||||||||
| 3101 | static void | ||||||||
| 3102 | diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, | ||||||||
| 3103 | ValueDecl *var, DeclContext *DC); | ||||||||
| 3104 | |||||||||
| 3105 | /// Complete semantic analysis for a reference to the given declaration. | ||||||||
| 3106 | ExprResult Sema::BuildDeclarationNameExpr( | ||||||||
| 3107 | const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, | ||||||||
| 3108 | NamedDecl *FoundD, const TemplateArgumentListInfo *TemplateArgs, | ||||||||
| 3109 | bool AcceptInvalidDecl) { | ||||||||
| 3110 | assert(D && "Cannot refer to a NULL declaration")((D && "Cannot refer to a NULL declaration") ? static_cast <void> (0) : __assert_fail ("D && \"Cannot refer to a NULL declaration\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3110, __PRETTY_FUNCTION__)); | ||||||||
| 3111 | assert(!isa<FunctionTemplateDecl>(D) &&((!isa<FunctionTemplateDecl>(D) && "Cannot refer unambiguously to a function template" ) ? static_cast<void> (0) : __assert_fail ("!isa<FunctionTemplateDecl>(D) && \"Cannot refer unambiguously to a function template\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3112, __PRETTY_FUNCTION__)) | ||||||||
| 3112 | "Cannot refer unambiguously to a function template")((!isa<FunctionTemplateDecl>(D) && "Cannot refer unambiguously to a function template" ) ? static_cast<void> (0) : __assert_fail ("!isa<FunctionTemplateDecl>(D) && \"Cannot refer unambiguously to a function template\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3112, __PRETTY_FUNCTION__)); | ||||||||
| 3113 | |||||||||
| 3114 | SourceLocation Loc = NameInfo.getLoc(); | ||||||||
| 3115 | if (CheckDeclInExpr(*this, Loc, D)) | ||||||||
| 3116 | return ExprError(); | ||||||||
| 3117 | |||||||||
| 3118 | if (TemplateDecl *Template = dyn_cast<TemplateDecl>(D)) { | ||||||||
| 3119 | // Specifically diagnose references to class templates that are missing | ||||||||
| 3120 | // a template argument list. | ||||||||
| 3121 | diagnoseMissingTemplateArguments(TemplateName(Template), Loc); | ||||||||
| 3122 | return ExprError(); | ||||||||
| 3123 | } | ||||||||
| 3124 | |||||||||
| 3125 | // Make sure that we're referring to a value. | ||||||||
| 3126 | ValueDecl *VD = dyn_cast<ValueDecl>(D); | ||||||||
| 3127 | if (!VD) { | ||||||||
| 3128 | Diag(Loc, diag::err_ref_non_value) | ||||||||
| 3129 | << D << SS.getRange(); | ||||||||
| 3130 | Diag(D->getLocation(), diag::note_declared_at); | ||||||||
| 3131 | return ExprError(); | ||||||||
| 3132 | } | ||||||||
| 3133 | |||||||||
| 3134 | // Check whether this declaration can be used. Note that we suppress | ||||||||
| 3135 | // this check when we're going to perform argument-dependent lookup | ||||||||
| 3136 | // on this function name, because this might not be the function | ||||||||
| 3137 | // that overload resolution actually selects. | ||||||||
| 3138 | if (DiagnoseUseOfDecl(VD, Loc)) | ||||||||
| 3139 | return ExprError(); | ||||||||
| 3140 | |||||||||
| 3141 | // Only create DeclRefExpr's for valid Decl's. | ||||||||
| 3142 | if (VD->isInvalidDecl() && !AcceptInvalidDecl) | ||||||||
| 3143 | return ExprError(); | ||||||||
| 3144 | |||||||||
| 3145 | // Handle members of anonymous structs and unions. If we got here, | ||||||||
| 3146 | // and the reference is to a class member indirect field, then this | ||||||||
| 3147 | // must be the subject of a pointer-to-member expression. | ||||||||
| 3148 | if (IndirectFieldDecl *indirectField = dyn_cast<IndirectFieldDecl>(VD)) | ||||||||
| 3149 | if (!indirectField->isCXXClassMember()) | ||||||||
| 3150 | return BuildAnonymousStructUnionMemberReference(SS, NameInfo.getLoc(), | ||||||||
| 3151 | indirectField); | ||||||||
| 3152 | |||||||||
| 3153 | { | ||||||||
| 3154 | QualType type = VD->getType(); | ||||||||
| 3155 | if (type.isNull()) | ||||||||
| 3156 | return ExprError(); | ||||||||
| 3157 | ExprValueKind valueKind = VK_RValue; | ||||||||
| 3158 | |||||||||
| 3159 | // In 'T ...V;', the type of the declaration 'V' is 'T...', but the type of | ||||||||
| 3160 | // a reference to 'V' is simply (unexpanded) 'T'. The type, like the value, | ||||||||
| 3161 | // is expanded by some outer '...' in the context of the use. | ||||||||
| 3162 | type = type.getNonPackExpansionType(); | ||||||||
| 3163 | |||||||||
| 3164 | switch (D->getKind()) { | ||||||||
| 3165 | // Ignore all the non-ValueDecl kinds. | ||||||||
| 3166 | #define ABSTRACT_DECL(kind) | ||||||||
| 3167 | #define VALUE(type, base) | ||||||||
| 3168 | #define DECL(type, base) \ | ||||||||
| 3169 | case Decl::type: | ||||||||
| 3170 | #include "clang/AST/DeclNodes.inc" | ||||||||
| 3171 | llvm_unreachable("invalid value decl kind")::llvm::llvm_unreachable_internal("invalid value decl kind", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3171); | ||||||||
| 3172 | |||||||||
| 3173 | // These shouldn't make it here. | ||||||||
| 3174 | case Decl::ObjCAtDefsField: | ||||||||
| 3175 | llvm_unreachable("forming non-member reference to ivar?")::llvm::llvm_unreachable_internal("forming non-member reference to ivar?" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3175); | ||||||||
| 3176 | |||||||||
| 3177 | // Enum constants are always r-values and never references. | ||||||||
| 3178 | // Unresolved using declarations are dependent. | ||||||||
| 3179 | case Decl::EnumConstant: | ||||||||
| 3180 | case Decl::UnresolvedUsingValue: | ||||||||
| 3181 | case Decl::OMPDeclareReduction: | ||||||||
| 3182 | case Decl::OMPDeclareMapper: | ||||||||
| 3183 | valueKind = VK_RValue; | ||||||||
| 3184 | break; | ||||||||
| 3185 | |||||||||
| 3186 | // Fields and indirect fields that got here must be for | ||||||||
| 3187 | // pointer-to-member expressions; we just call them l-values for | ||||||||
| 3188 | // internal consistency, because this subexpression doesn't really | ||||||||
| 3189 | // exist in the high-level semantics. | ||||||||
| 3190 | case Decl::Field: | ||||||||
| 3191 | case Decl::IndirectField: | ||||||||
| 3192 | case Decl::ObjCIvar: | ||||||||
| 3193 | assert(getLangOpts().CPlusPlus &&((getLangOpts().CPlusPlus && "building reference to field in C?" ) ? static_cast<void> (0) : __assert_fail ("getLangOpts().CPlusPlus && \"building reference to field in C?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3194, __PRETTY_FUNCTION__)) | ||||||||
| 3194 | "building reference to field in C?")((getLangOpts().CPlusPlus && "building reference to field in C?" ) ? static_cast<void> (0) : __assert_fail ("getLangOpts().CPlusPlus && \"building reference to field in C?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3194, __PRETTY_FUNCTION__)); | ||||||||
| 3195 | |||||||||
| 3196 | // These can't have reference type in well-formed programs, but | ||||||||
| 3197 | // for internal consistency we do this anyway. | ||||||||
| 3198 | type = type.getNonReferenceType(); | ||||||||
| 3199 | valueKind = VK_LValue; | ||||||||
| 3200 | break; | ||||||||
| 3201 | |||||||||
| 3202 | // Non-type template parameters are either l-values or r-values | ||||||||
| 3203 | // depending on the type. | ||||||||
| 3204 | case Decl::NonTypeTemplateParm: { | ||||||||
| 3205 | if (const ReferenceType *reftype = type->getAs<ReferenceType>()) { | ||||||||
| 3206 | type = reftype->getPointeeType(); | ||||||||
| 3207 | valueKind = VK_LValue; // even if the parameter is an r-value reference | ||||||||
| 3208 | break; | ||||||||
| 3209 | } | ||||||||
| 3210 | |||||||||
| 3211 | // For non-references, we need to strip qualifiers just in case | ||||||||
| 3212 | // the template parameter was declared as 'const int' or whatever. | ||||||||
| 3213 | valueKind = VK_RValue; | ||||||||
| 3214 | type = type.getUnqualifiedType(); | ||||||||
| 3215 | break; | ||||||||
| 3216 | } | ||||||||
| 3217 | |||||||||
| 3218 | case Decl::Var: | ||||||||
| 3219 | case Decl::VarTemplateSpecialization: | ||||||||
| 3220 | case Decl::VarTemplatePartialSpecialization: | ||||||||
| 3221 | case Decl::Decomposition: | ||||||||
| 3222 | case Decl::OMPCapturedExpr: | ||||||||
| 3223 | // In C, "extern void blah;" is valid and is an r-value. | ||||||||
| 3224 | if (!getLangOpts().CPlusPlus && | ||||||||
| 3225 | !type.hasQualifiers() && | ||||||||
| 3226 | type->isVoidType()) { | ||||||||
| 3227 | valueKind = VK_RValue; | ||||||||
| 3228 | break; | ||||||||
| 3229 | } | ||||||||
| 3230 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 3231 | |||||||||
| 3232 | case Decl::ImplicitParam: | ||||||||
| 3233 | case Decl::ParmVar: { | ||||||||
| 3234 | // These are always l-values. | ||||||||
| 3235 | valueKind = VK_LValue; | ||||||||
| 3236 | type = type.getNonReferenceType(); | ||||||||
| 3237 | |||||||||
| 3238 | // FIXME: Does the addition of const really only apply in | ||||||||
| 3239 | // potentially-evaluated contexts? Since the variable isn't actually | ||||||||
| 3240 | // captured in an unevaluated context, it seems that the answer is no. | ||||||||
| 3241 | if (!isUnevaluatedContext()) { | ||||||||
| 3242 | QualType CapturedType = getCapturedDeclRefType(cast<VarDecl>(VD), Loc); | ||||||||
| 3243 | if (!CapturedType.isNull()) | ||||||||
| 3244 | type = CapturedType; | ||||||||
| 3245 | } | ||||||||
| 3246 | |||||||||
| 3247 | break; | ||||||||
| 3248 | } | ||||||||
| 3249 | |||||||||
| 3250 | case Decl::Binding: { | ||||||||
| 3251 | // These are always lvalues. | ||||||||
| 3252 | valueKind = VK_LValue; | ||||||||
| 3253 | type = type.getNonReferenceType(); | ||||||||
| 3254 | // FIXME: Support lambda-capture of BindingDecls, once CWG actually | ||||||||
| 3255 | // decides how that's supposed to work. | ||||||||
| 3256 | auto *BD = cast<BindingDecl>(VD); | ||||||||
| 3257 | if (BD->getDeclContext() != CurContext) { | ||||||||
| 3258 | auto *DD = dyn_cast_or_null<VarDecl>(BD->getDecomposedDecl()); | ||||||||
| 3259 | if (DD && DD->hasLocalStorage()) | ||||||||
| 3260 | diagnoseUncapturableValueReference(*this, Loc, BD, CurContext); | ||||||||
| 3261 | } | ||||||||
| 3262 | break; | ||||||||
| 3263 | } | ||||||||
| 3264 | |||||||||
| 3265 | case Decl::Function: { | ||||||||
| 3266 | if (unsigned BID = cast<FunctionDecl>(VD)->getBuiltinID()) { | ||||||||
| 3267 | if (!Context.BuiltinInfo.isPredefinedLibFunction(BID)) { | ||||||||
| 3268 | type = Context.BuiltinFnTy; | ||||||||
| 3269 | valueKind = VK_RValue; | ||||||||
| 3270 | break; | ||||||||
| 3271 | } | ||||||||
| 3272 | } | ||||||||
| 3273 | |||||||||
| 3274 | const FunctionType *fty = type->castAs<FunctionType>(); | ||||||||
| 3275 | |||||||||
| 3276 | // If we're referring to a function with an __unknown_anytype | ||||||||
| 3277 | // result type, make the entire expression __unknown_anytype. | ||||||||
| 3278 | if (fty->getReturnType() == Context.UnknownAnyTy) { | ||||||||
| 3279 | type = Context.UnknownAnyTy; | ||||||||
| 3280 | valueKind = VK_RValue; | ||||||||
| 3281 | break; | ||||||||
| 3282 | } | ||||||||
| 3283 | |||||||||
| 3284 | // Functions are l-values in C++. | ||||||||
| 3285 | if (getLangOpts().CPlusPlus) { | ||||||||
| 3286 | valueKind = VK_LValue; | ||||||||
| 3287 | break; | ||||||||
| 3288 | } | ||||||||
| 3289 | |||||||||
| 3290 | // C99 DR 316 says that, if a function type comes from a | ||||||||
| 3291 | // function definition (without a prototype), that type is only | ||||||||
| 3292 | // used for checking compatibility. Therefore, when referencing | ||||||||
| 3293 | // the function, we pretend that we don't have the full function | ||||||||
| 3294 | // type. | ||||||||
| 3295 | if (!cast<FunctionDecl>(VD)->hasPrototype() && | ||||||||
| 3296 | isa<FunctionProtoType>(fty)) | ||||||||
| 3297 | type = Context.getFunctionNoProtoType(fty->getReturnType(), | ||||||||
| 3298 | fty->getExtInfo()); | ||||||||
| 3299 | |||||||||
| 3300 | // Functions are r-values in C. | ||||||||
| 3301 | valueKind = VK_RValue; | ||||||||
| 3302 | break; | ||||||||
| 3303 | } | ||||||||
| 3304 | |||||||||
| 3305 | case Decl::CXXDeductionGuide: | ||||||||
| 3306 | llvm_unreachable("building reference to deduction guide")::llvm::llvm_unreachable_internal("building reference to deduction guide" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3306); | ||||||||
| 3307 | |||||||||
| 3308 | case Decl::MSProperty: | ||||||||
| 3309 | case Decl::MSGuid: | ||||||||
| 3310 | // FIXME: Should MSGuidDecl be subject to capture in OpenMP, | ||||||||
| 3311 | // or duplicated between host and device? | ||||||||
| 3312 | valueKind = VK_LValue; | ||||||||
| 3313 | break; | ||||||||
| 3314 | |||||||||
| 3315 | case Decl::CXXMethod: | ||||||||
| 3316 | // If we're referring to a method with an __unknown_anytype | ||||||||
| 3317 | // result type, make the entire expression __unknown_anytype. | ||||||||
| 3318 | // This should only be possible with a type written directly. | ||||||||
| 3319 | if (const FunctionProtoType *proto | ||||||||
| 3320 | = dyn_cast<FunctionProtoType>(VD->getType())) | ||||||||
| 3321 | if (proto->getReturnType() == Context.UnknownAnyTy) { | ||||||||
| 3322 | type = Context.UnknownAnyTy; | ||||||||
| 3323 | valueKind = VK_RValue; | ||||||||
| 3324 | break; | ||||||||
| 3325 | } | ||||||||
| 3326 | |||||||||
| 3327 | // C++ methods are l-values if static, r-values if non-static. | ||||||||
| 3328 | if (cast<CXXMethodDecl>(VD)->isStatic()) { | ||||||||
| 3329 | valueKind = VK_LValue; | ||||||||
| 3330 | break; | ||||||||
| 3331 | } | ||||||||
| 3332 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 3333 | |||||||||
| 3334 | case Decl::CXXConversion: | ||||||||
| 3335 | case Decl::CXXDestructor: | ||||||||
| 3336 | case Decl::CXXConstructor: | ||||||||
| 3337 | valueKind = VK_RValue; | ||||||||
| 3338 | break; | ||||||||
| 3339 | } | ||||||||
| 3340 | |||||||||
| 3341 | return BuildDeclRefExpr(VD, type, valueKind, NameInfo, &SS, FoundD, | ||||||||
| 3342 | /*FIXME: TemplateKWLoc*/ SourceLocation(), | ||||||||
| 3343 | TemplateArgs); | ||||||||
| 3344 | } | ||||||||
| 3345 | } | ||||||||
| 3346 | |||||||||
| 3347 | static void ConvertUTF8ToWideString(unsigned CharByteWidth, StringRef Source, | ||||||||
| 3348 | SmallString<32> &Target) { | ||||||||
| 3349 | Target.resize(CharByteWidth * (Source.size() + 1)); | ||||||||
| 3350 | char *ResultPtr = &Target[0]; | ||||||||
| 3351 | const llvm::UTF8 *ErrorPtr; | ||||||||
| 3352 | bool success = | ||||||||
| 3353 | llvm::ConvertUTF8toWide(CharByteWidth, Source, ResultPtr, ErrorPtr); | ||||||||
| 3354 | (void)success; | ||||||||
| 3355 | assert(success)((success) ? static_cast<void> (0) : __assert_fail ("success" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3355, __PRETTY_FUNCTION__)); | ||||||||
| 3356 | Target.resize(ResultPtr - &Target[0]); | ||||||||
| 3357 | } | ||||||||
| 3358 | |||||||||
| 3359 | ExprResult Sema::BuildPredefinedExpr(SourceLocation Loc, | ||||||||
| 3360 | PredefinedExpr::IdentKind IK) { | ||||||||
| 3361 | // Pick the current block, lambda, captured statement or function. | ||||||||
| 3362 | Decl *currentDecl = nullptr; | ||||||||
| 3363 | if (const BlockScopeInfo *BSI = getCurBlock()) | ||||||||
| 3364 | currentDecl = BSI->TheDecl; | ||||||||
| 3365 | else if (const LambdaScopeInfo *LSI = getCurLambda()) | ||||||||
| 3366 | currentDecl = LSI->CallOperator; | ||||||||
| 3367 | else if (const CapturedRegionScopeInfo *CSI = getCurCapturedRegion()) | ||||||||
| 3368 | currentDecl = CSI->TheCapturedDecl; | ||||||||
| 3369 | else | ||||||||
| 3370 | currentDecl = getCurFunctionOrMethodDecl(); | ||||||||
| 3371 | |||||||||
| 3372 | if (!currentDecl) { | ||||||||
| 3373 | Diag(Loc, diag::ext_predef_outside_function); | ||||||||
| 3374 | currentDecl = Context.getTranslationUnitDecl(); | ||||||||
| 3375 | } | ||||||||
| 3376 | |||||||||
| 3377 | QualType ResTy; | ||||||||
| 3378 | StringLiteral *SL = nullptr; | ||||||||
| 3379 | if (cast<DeclContext>(currentDecl)->isDependentContext()) | ||||||||
| 3380 | ResTy = Context.DependentTy; | ||||||||
| 3381 | else { | ||||||||
| 3382 | // Pre-defined identifiers are of type char[x], where x is the length of | ||||||||
| 3383 | // the string. | ||||||||
| 3384 | auto Str = PredefinedExpr::ComputeName(IK, currentDecl); | ||||||||
| 3385 | unsigned Length = Str.length(); | ||||||||
| 3386 | |||||||||
| 3387 | llvm::APInt LengthI(32, Length + 1); | ||||||||
| 3388 | if (IK == PredefinedExpr::LFunction || IK == PredefinedExpr::LFuncSig) { | ||||||||
| 3389 | ResTy = | ||||||||
| 3390 | Context.adjustStringLiteralBaseType(Context.WideCharTy.withConst()); | ||||||||
| 3391 | SmallString<32> RawChars; | ||||||||
| 3392 | ConvertUTF8ToWideString(Context.getTypeSizeInChars(ResTy).getQuantity(), | ||||||||
| 3393 | Str, RawChars); | ||||||||
| 3394 | ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, | ||||||||
| 3395 | ArrayType::Normal, | ||||||||
| 3396 | /*IndexTypeQuals*/ 0); | ||||||||
| 3397 | SL = StringLiteral::Create(Context, RawChars, StringLiteral::Wide, | ||||||||
| 3398 | /*Pascal*/ false, ResTy, Loc); | ||||||||
| 3399 | } else { | ||||||||
| 3400 | ResTy = Context.adjustStringLiteralBaseType(Context.CharTy.withConst()); | ||||||||
| 3401 | ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, | ||||||||
| 3402 | ArrayType::Normal, | ||||||||
| 3403 | /*IndexTypeQuals*/ 0); | ||||||||
| 3404 | SL = StringLiteral::Create(Context, Str, StringLiteral::Ascii, | ||||||||
| 3405 | /*Pascal*/ false, ResTy, Loc); | ||||||||
| 3406 | } | ||||||||
| 3407 | } | ||||||||
| 3408 | |||||||||
| 3409 | return PredefinedExpr::Create(Context, Loc, ResTy, IK, SL); | ||||||||
| 3410 | } | ||||||||
| 3411 | |||||||||
| 3412 | static std::pair<QualType, StringLiteral *> | ||||||||
| 3413 | GetUniqueStableNameInfo(ASTContext &Context, QualType OpType, | ||||||||
| 3414 | SourceLocation OpLoc, PredefinedExpr::IdentKind K) { | ||||||||
| 3415 | std::pair<QualType, StringLiteral*> Result{{}, nullptr}; | ||||||||
| 3416 | |||||||||
| 3417 | if (OpType->isDependentType()) { | ||||||||
| 3418 | Result.first = Context.DependentTy; | ||||||||
| 3419 | return Result; | ||||||||
| 3420 | } | ||||||||
| 3421 | |||||||||
| 3422 | std::string Str = PredefinedExpr::ComputeName(Context, K, OpType); | ||||||||
| 3423 | llvm::APInt Length(32, Str.length() + 1); | ||||||||
| 3424 | Result.first = | ||||||||
| 3425 | Context.adjustStringLiteralBaseType(Context.CharTy.withConst()); | ||||||||
| 3426 | Result.first = Context.getConstantArrayType( | ||||||||
| 3427 | Result.first, Length, nullptr, ArrayType::Normal, /*IndexTypeQuals*/ 0); | ||||||||
| 3428 | Result.second = StringLiteral::Create(Context, Str, StringLiteral::Ascii, | ||||||||
| 3429 | /*Pascal*/ false, Result.first, OpLoc); | ||||||||
| 3430 | return Result; | ||||||||
| 3431 | } | ||||||||
| 3432 | |||||||||
| 3433 | ExprResult Sema::BuildUniqueStableName(SourceLocation OpLoc, | ||||||||
| 3434 | TypeSourceInfo *Operand) { | ||||||||
| 3435 | QualType ResultTy; | ||||||||
| 3436 | StringLiteral *SL; | ||||||||
| 3437 | std::tie(ResultTy, SL) = GetUniqueStableNameInfo( | ||||||||
| 3438 | Context, Operand->getType(), OpLoc, PredefinedExpr::UniqueStableNameType); | ||||||||
| 3439 | |||||||||
| 3440 | return PredefinedExpr::Create(Context, OpLoc, ResultTy, | ||||||||
| 3441 | PredefinedExpr::UniqueStableNameType, SL, | ||||||||
| 3442 | Operand); | ||||||||
| 3443 | } | ||||||||
| 3444 | |||||||||
| 3445 | ExprResult Sema::BuildUniqueStableName(SourceLocation OpLoc, | ||||||||
| 3446 | Expr *E) { | ||||||||
| 3447 | QualType ResultTy; | ||||||||
| 3448 | StringLiteral *SL; | ||||||||
| 3449 | std::tie(ResultTy, SL) = GetUniqueStableNameInfo( | ||||||||
| 3450 | Context, E->getType(), OpLoc, PredefinedExpr::UniqueStableNameExpr); | ||||||||
| 3451 | |||||||||
| 3452 | return PredefinedExpr::Create(Context, OpLoc, ResultTy, | ||||||||
| 3453 | PredefinedExpr::UniqueStableNameExpr, SL, E); | ||||||||
| 3454 | } | ||||||||
| 3455 | |||||||||
| 3456 | ExprResult Sema::ActOnUniqueStableNameExpr(SourceLocation OpLoc, | ||||||||
| 3457 | SourceLocation L, SourceLocation R, | ||||||||
| 3458 | ParsedType Ty) { | ||||||||
| 3459 | TypeSourceInfo *TInfo = nullptr; | ||||||||
| 3460 | QualType T = GetTypeFromParser(Ty, &TInfo); | ||||||||
| 3461 | |||||||||
| 3462 | if (T.isNull()) | ||||||||
| 3463 | return ExprError(); | ||||||||
| 3464 | if (!TInfo) | ||||||||
| 3465 | TInfo = Context.getTrivialTypeSourceInfo(T, OpLoc); | ||||||||
| 3466 | |||||||||
| 3467 | return BuildUniqueStableName(OpLoc, TInfo); | ||||||||
| 3468 | } | ||||||||
| 3469 | |||||||||
| 3470 | ExprResult Sema::ActOnUniqueStableNameExpr(SourceLocation OpLoc, | ||||||||
| 3471 | SourceLocation L, SourceLocation R, | ||||||||
| 3472 | Expr *E) { | ||||||||
| 3473 | return BuildUniqueStableName(OpLoc, E); | ||||||||
| 3474 | } | ||||||||
| 3475 | |||||||||
| 3476 | ExprResult Sema::ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind) { | ||||||||
| 3477 | PredefinedExpr::IdentKind IK; | ||||||||
| 3478 | |||||||||
| 3479 | switch (Kind) { | ||||||||
| 3480 | default: llvm_unreachable("Unknown simple primary expr!")::llvm::llvm_unreachable_internal("Unknown simple primary expr!" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3480); | ||||||||
| 3481 | case tok::kw___func__: IK = PredefinedExpr::Func; break; // [C99 6.4.2.2] | ||||||||
| 3482 | case tok::kw___FUNCTION__: IK = PredefinedExpr::Function; break; | ||||||||
| 3483 | case tok::kw___FUNCDNAME__: IK = PredefinedExpr::FuncDName; break; // [MS] | ||||||||
| 3484 | case tok::kw___FUNCSIG__: IK = PredefinedExpr::FuncSig; break; // [MS] | ||||||||
| 3485 | case tok::kw_L__FUNCTION__: IK = PredefinedExpr::LFunction; break; // [MS] | ||||||||
| 3486 | case tok::kw_L__FUNCSIG__: IK = PredefinedExpr::LFuncSig; break; // [MS] | ||||||||
| 3487 | case tok::kw___PRETTY_FUNCTION__: IK = PredefinedExpr::PrettyFunction; break; | ||||||||
| 3488 | } | ||||||||
| 3489 | |||||||||
| 3490 | return BuildPredefinedExpr(Loc, IK); | ||||||||
| 3491 | } | ||||||||
| 3492 | |||||||||
| 3493 | ExprResult Sema::ActOnCharacterConstant(const Token &Tok, Scope *UDLScope) { | ||||||||
| 3494 | SmallString<16> CharBuffer; | ||||||||
| 3495 | bool Invalid = false; | ||||||||
| 3496 | StringRef ThisTok = PP.getSpelling(Tok, CharBuffer, &Invalid); | ||||||||
| 3497 | if (Invalid) | ||||||||
| 3498 | return ExprError(); | ||||||||
| 3499 | |||||||||
| 3500 | CharLiteralParser Literal(ThisTok.begin(), ThisTok.end(), Tok.getLocation(), | ||||||||
| 3501 | PP, Tok.getKind()); | ||||||||
| 3502 | if (Literal.hadError()) | ||||||||
| 3503 | return ExprError(); | ||||||||
| 3504 | |||||||||
| 3505 | QualType Ty; | ||||||||
| 3506 | if (Literal.isWide()) | ||||||||
| 3507 | Ty = Context.WideCharTy; // L'x' -> wchar_t in C and C++. | ||||||||
| 3508 | else if (Literal.isUTF8() && getLangOpts().Char8) | ||||||||
| 3509 | Ty = Context.Char8Ty; // u8'x' -> char8_t when it exists. | ||||||||
| 3510 | else if (Literal.isUTF16()) | ||||||||
| 3511 | Ty = Context.Char16Ty; // u'x' -> char16_t in C11 and C++11. | ||||||||
| 3512 | else if (Literal.isUTF32()) | ||||||||
| 3513 | Ty = Context.Char32Ty; // U'x' -> char32_t in C11 and C++11. | ||||||||
| 3514 | else if (!getLangOpts().CPlusPlus || Literal.isMultiChar()) | ||||||||
| 3515 | Ty = Context.IntTy; // 'x' -> int in C, 'wxyz' -> int in C++. | ||||||||
| 3516 | else | ||||||||
| 3517 | Ty = Context.CharTy; // 'x' -> char in C++ | ||||||||
| 3518 | |||||||||
| 3519 | CharacterLiteral::CharacterKind Kind = CharacterLiteral::Ascii; | ||||||||
| 3520 | if (Literal.isWide()) | ||||||||
| 3521 | Kind = CharacterLiteral::Wide; | ||||||||
| 3522 | else if (Literal.isUTF16()) | ||||||||
| 3523 | Kind = CharacterLiteral::UTF16; | ||||||||
| 3524 | else if (Literal.isUTF32()) | ||||||||
| 3525 | Kind = CharacterLiteral::UTF32; | ||||||||
| 3526 | else if (Literal.isUTF8()) | ||||||||
| 3527 | Kind = CharacterLiteral::UTF8; | ||||||||
| 3528 | |||||||||
| 3529 | Expr *Lit = new (Context) CharacterLiteral(Literal.getValue(), Kind, Ty, | ||||||||
| 3530 | Tok.getLocation()); | ||||||||
| 3531 | |||||||||
| 3532 | if (Literal.getUDSuffix().empty()) | ||||||||
| 3533 | return Lit; | ||||||||
| 3534 | |||||||||
| 3535 | // We're building a user-defined literal. | ||||||||
| 3536 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||||||
| 3537 | SourceLocation UDSuffixLoc = | ||||||||
| 3538 | getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); | ||||||||
| 3539 | |||||||||
| 3540 | // Make sure we're allowed user-defined literals here. | ||||||||
| 3541 | if (!UDLScope) | ||||||||
| 3542 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_character_udl)); | ||||||||
| 3543 | |||||||||
| 3544 | // C++11 [lex.ext]p6: The literal L is treated as a call of the form | ||||||||
| 3545 | // operator "" X (ch) | ||||||||
| 3546 | return BuildCookedLiteralOperatorCall(*this, UDLScope, UDSuffix, UDSuffixLoc, | ||||||||
| 3547 | Lit, Tok.getLocation()); | ||||||||
| 3548 | } | ||||||||
| 3549 | |||||||||
| 3550 | ExprResult Sema::ActOnIntegerConstant(SourceLocation Loc, uint64_t Val) { | ||||||||
| 3551 | unsigned IntSize = Context.getTargetInfo().getIntWidth(); | ||||||||
| 3552 | return IntegerLiteral::Create(Context, llvm::APInt(IntSize, Val), | ||||||||
| 3553 | Context.IntTy, Loc); | ||||||||
| 3554 | } | ||||||||
| 3555 | |||||||||
| 3556 | static Expr *BuildFloatingLiteral(Sema &S, NumericLiteralParser &Literal, | ||||||||
| 3557 | QualType Ty, SourceLocation Loc) { | ||||||||
| 3558 | const llvm::fltSemantics &Format = S.Context.getFloatTypeSemantics(Ty); | ||||||||
| 3559 | |||||||||
| 3560 | using llvm::APFloat; | ||||||||
| 3561 | APFloat Val(Format); | ||||||||
| 3562 | |||||||||
| 3563 | APFloat::opStatus result = Literal.GetFloatValue(Val); | ||||||||
| 3564 | |||||||||
| 3565 | // Overflow is always an error, but underflow is only an error if | ||||||||
| 3566 | // we underflowed to zero (APFloat reports denormals as underflow). | ||||||||
| 3567 | if ((result & APFloat::opOverflow) || | ||||||||
| 3568 | ((result & APFloat::opUnderflow) && Val.isZero())) { | ||||||||
| 3569 | unsigned diagnostic; | ||||||||
| 3570 | SmallString<20> buffer; | ||||||||
| 3571 | if (result & APFloat::opOverflow) { | ||||||||
| 3572 | diagnostic = diag::warn_float_overflow; | ||||||||
| 3573 | APFloat::getLargest(Format).toString(buffer); | ||||||||
| 3574 | } else { | ||||||||
| 3575 | diagnostic = diag::warn_float_underflow; | ||||||||
| 3576 | APFloat::getSmallest(Format).toString(buffer); | ||||||||
| 3577 | } | ||||||||
| 3578 | |||||||||
| 3579 | S.Diag(Loc, diagnostic) | ||||||||
| 3580 | << Ty | ||||||||
| 3581 | << StringRef(buffer.data(), buffer.size()); | ||||||||
| 3582 | } | ||||||||
| 3583 | |||||||||
| 3584 | bool isExact = (result == APFloat::opOK); | ||||||||
| 3585 | return FloatingLiteral::Create(S.Context, Val, isExact, Ty, Loc); | ||||||||
| 3586 | } | ||||||||
| 3587 | |||||||||
| 3588 | bool Sema::CheckLoopHintExpr(Expr *E, SourceLocation Loc) { | ||||||||
| 3589 | assert(E && "Invalid expression")((E && "Invalid expression") ? static_cast<void> (0) : __assert_fail ("E && \"Invalid expression\"", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3589, __PRETTY_FUNCTION__)); | ||||||||
| 3590 | |||||||||
| 3591 | if (E->isValueDependent()) | ||||||||
| 3592 | return false; | ||||||||
| 3593 | |||||||||
| 3594 | QualType QT = E->getType(); | ||||||||
| 3595 | if (!QT->isIntegerType() || QT->isBooleanType() || QT->isCharType()) { | ||||||||
| 3596 | Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_type) << QT; | ||||||||
| 3597 | return true; | ||||||||
| 3598 | } | ||||||||
| 3599 | |||||||||
| 3600 | llvm::APSInt ValueAPS; | ||||||||
| 3601 | ExprResult R = VerifyIntegerConstantExpression(E, &ValueAPS); | ||||||||
| 3602 | |||||||||
| 3603 | if (R.isInvalid()) | ||||||||
| 3604 | return true; | ||||||||
| 3605 | |||||||||
| 3606 | bool ValueIsPositive = ValueAPS.isStrictlyPositive(); | ||||||||
| 3607 | if (!ValueIsPositive || ValueAPS.getActiveBits() > 31) { | ||||||||
| 3608 | Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_value) | ||||||||
| 3609 | << ValueAPS.toString(10) << ValueIsPositive; | ||||||||
| 3610 | return true; | ||||||||
| 3611 | } | ||||||||
| 3612 | |||||||||
| 3613 | return false; | ||||||||
| 3614 | } | ||||||||
| 3615 | |||||||||
| 3616 | ExprResult Sema::ActOnNumericConstant(const Token &Tok, Scope *UDLScope) { | ||||||||
| 3617 | // Fast path for a single digit (which is quite common). A single digit | ||||||||
| 3618 | // cannot have a trigraph, escaped newline, radix prefix, or suffix. | ||||||||
| 3619 | if (Tok.getLength() == 1) { | ||||||||
| 3620 | const char Val = PP.getSpellingOfSingleCharacterNumericConstant(Tok); | ||||||||
| 3621 | return ActOnIntegerConstant(Tok.getLocation(), Val-'0'); | ||||||||
| 3622 | } | ||||||||
| 3623 | |||||||||
| 3624 | SmallString<128> SpellingBuffer; | ||||||||
| 3625 | // NumericLiteralParser wants to overread by one character. Add padding to | ||||||||
| 3626 | // the buffer in case the token is copied to the buffer. If getSpelling() | ||||||||
| 3627 | // returns a StringRef to the memory buffer, it should have a null char at | ||||||||
| 3628 | // the EOF, so it is also safe. | ||||||||
| 3629 | SpellingBuffer.resize(Tok.getLength() + 1); | ||||||||
| 3630 | |||||||||
| 3631 | // Get the spelling of the token, which eliminates trigraphs, etc. | ||||||||
| 3632 | bool Invalid = false; | ||||||||
| 3633 | StringRef TokSpelling = PP.getSpelling(Tok, SpellingBuffer, &Invalid); | ||||||||
| 3634 | if (Invalid) | ||||||||
| 3635 | return ExprError(); | ||||||||
| 3636 | |||||||||
| 3637 | NumericLiteralParser Literal(TokSpelling, Tok.getLocation(), | ||||||||
| 3638 | PP.getSourceManager(), PP.getLangOpts(), | ||||||||
| 3639 | PP.getTargetInfo(), PP.getDiagnostics()); | ||||||||
| 3640 | if (Literal.hadError) | ||||||||
| 3641 | return ExprError(); | ||||||||
| 3642 | |||||||||
| 3643 | if (Literal.hasUDSuffix()) { | ||||||||
| 3644 | // We're building a user-defined literal. | ||||||||
| 3645 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||||||
| 3646 | SourceLocation UDSuffixLoc = | ||||||||
| 3647 | getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); | ||||||||
| 3648 | |||||||||
| 3649 | // Make sure we're allowed user-defined literals here. | ||||||||
| 3650 | if (!UDLScope) | ||||||||
| 3651 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_numeric_udl)); | ||||||||
| 3652 | |||||||||
| 3653 | QualType CookedTy; | ||||||||
| 3654 | if (Literal.isFloatingLiteral()) { | ||||||||
| 3655 | // C++11 [lex.ext]p4: If S contains a literal operator with parameter type | ||||||||
| 3656 | // long double, the literal is treated as a call of the form | ||||||||
| 3657 | // operator "" X (f L) | ||||||||
| 3658 | CookedTy = Context.LongDoubleTy; | ||||||||
| 3659 | } else { | ||||||||
| 3660 | // C++11 [lex.ext]p3: If S contains a literal operator with parameter type | ||||||||
| 3661 | // unsigned long long, the literal is treated as a call of the form | ||||||||
| 3662 | // operator "" X (n ULL) | ||||||||
| 3663 | CookedTy = Context.UnsignedLongLongTy; | ||||||||
| 3664 | } | ||||||||
| 3665 | |||||||||
| 3666 | DeclarationName OpName = | ||||||||
| 3667 | Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||||||
| 3668 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||||||
| 3669 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||||||
| 3670 | |||||||||
| 3671 | SourceLocation TokLoc = Tok.getLocation(); | ||||||||
| 3672 | |||||||||
| 3673 | // Perform literal operator lookup to determine if we're building a raw | ||||||||
| 3674 | // literal or a cooked one. | ||||||||
| 3675 | LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); | ||||||||
| 3676 | switch (LookupLiteralOperator(UDLScope, R, CookedTy, | ||||||||
| 3677 | /*AllowRaw*/ true, /*AllowTemplate*/ true, | ||||||||
| 3678 | /*AllowStringTemplate*/ false, | ||||||||
| 3679 | /*DiagnoseMissing*/ !Literal.isImaginary)) { | ||||||||
| 3680 | case LOLR_ErrorNoDiagnostic: | ||||||||
| 3681 | // Lookup failure for imaginary constants isn't fatal, there's still the | ||||||||
| 3682 | // GNU extension producing _Complex types. | ||||||||
| 3683 | break; | ||||||||
| 3684 | case LOLR_Error: | ||||||||
| 3685 | return ExprError(); | ||||||||
| 3686 | case LOLR_Cooked: { | ||||||||
| 3687 | Expr *Lit; | ||||||||
| 3688 | if (Literal.isFloatingLiteral()) { | ||||||||
| 3689 | Lit = BuildFloatingLiteral(*this, Literal, CookedTy, Tok.getLocation()); | ||||||||
| 3690 | } else { | ||||||||
| 3691 | llvm::APInt ResultVal(Context.getTargetInfo().getLongLongWidth(), 0); | ||||||||
| 3692 | if (Literal.GetIntegerValue(ResultVal)) | ||||||||
| 3693 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||||||
| 3694 | << /* Unsigned */ 1; | ||||||||
| 3695 | Lit = IntegerLiteral::Create(Context, ResultVal, CookedTy, | ||||||||
| 3696 | Tok.getLocation()); | ||||||||
| 3697 | } | ||||||||
| 3698 | return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); | ||||||||
| 3699 | } | ||||||||
| 3700 | |||||||||
| 3701 | case LOLR_Raw: { | ||||||||
| 3702 | // C++11 [lit.ext]p3, p4: If S contains a raw literal operator, the | ||||||||
| 3703 | // literal is treated as a call of the form | ||||||||
| 3704 | // operator "" X ("n") | ||||||||
| 3705 | unsigned Length = Literal.getUDSuffixOffset(); | ||||||||
| 3706 | QualType StrTy = Context.getConstantArrayType( | ||||||||
| 3707 | Context.adjustStringLiteralBaseType(Context.CharTy.withConst()), | ||||||||
| 3708 | llvm::APInt(32, Length + 1), nullptr, ArrayType::Normal, 0); | ||||||||
| 3709 | Expr *Lit = StringLiteral::Create( | ||||||||
| 3710 | Context, StringRef(TokSpelling.data(), Length), StringLiteral::Ascii, | ||||||||
| 3711 | /*Pascal*/false, StrTy, &TokLoc, 1); | ||||||||
| 3712 | return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); | ||||||||
| 3713 | } | ||||||||
| 3714 | |||||||||
| 3715 | case LOLR_Template: { | ||||||||
| 3716 | // C++11 [lit.ext]p3, p4: Otherwise (S contains a literal operator | ||||||||
| 3717 | // template), L is treated as a call fo the form | ||||||||
| 3718 | // operator "" X <'c1', 'c2', ... 'ck'>() | ||||||||
| 3719 | // where n is the source character sequence c1 c2 ... ck. | ||||||||
| 3720 | TemplateArgumentListInfo ExplicitArgs; | ||||||||
| 3721 | unsigned CharBits = Context.getIntWidth(Context.CharTy); | ||||||||
| 3722 | bool CharIsUnsigned = Context.CharTy->isUnsignedIntegerType(); | ||||||||
| 3723 | llvm::APSInt Value(CharBits, CharIsUnsigned); | ||||||||
| 3724 | for (unsigned I = 0, N = Literal.getUDSuffixOffset(); I != N; ++I) { | ||||||||
| 3725 | Value = TokSpelling[I]; | ||||||||
| 3726 | TemplateArgument Arg(Context, Value, Context.CharTy); | ||||||||
| 3727 | TemplateArgumentLocInfo ArgInfo; | ||||||||
| 3728 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||||||
| 3729 | } | ||||||||
| 3730 | return BuildLiteralOperatorCall(R, OpNameInfo, None, TokLoc, | ||||||||
| 3731 | &ExplicitArgs); | ||||||||
| 3732 | } | ||||||||
| 3733 | case LOLR_StringTemplate: | ||||||||
| 3734 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3734); | ||||||||
| 3735 | } | ||||||||
| 3736 | } | ||||||||
| 3737 | |||||||||
| 3738 | Expr *Res; | ||||||||
| 3739 | |||||||||
| 3740 | if (Literal.isFixedPointLiteral()) { | ||||||||
| 3741 | QualType Ty; | ||||||||
| 3742 | |||||||||
| 3743 | if (Literal.isAccum) { | ||||||||
| 3744 | if (Literal.isHalf) { | ||||||||
| 3745 | Ty = Context.ShortAccumTy; | ||||||||
| 3746 | } else if (Literal.isLong) { | ||||||||
| 3747 | Ty = Context.LongAccumTy; | ||||||||
| 3748 | } else { | ||||||||
| 3749 | Ty = Context.AccumTy; | ||||||||
| 3750 | } | ||||||||
| 3751 | } else if (Literal.isFract) { | ||||||||
| 3752 | if (Literal.isHalf) { | ||||||||
| 3753 | Ty = Context.ShortFractTy; | ||||||||
| 3754 | } else if (Literal.isLong) { | ||||||||
| 3755 | Ty = Context.LongFractTy; | ||||||||
| 3756 | } else { | ||||||||
| 3757 | Ty = Context.FractTy; | ||||||||
| 3758 | } | ||||||||
| 3759 | } | ||||||||
| 3760 | |||||||||
| 3761 | if (Literal.isUnsigned) Ty = Context.getCorrespondingUnsignedType(Ty); | ||||||||
| 3762 | |||||||||
| 3763 | bool isSigned = !Literal.isUnsigned; | ||||||||
| 3764 | unsigned scale = Context.getFixedPointScale(Ty); | ||||||||
| 3765 | unsigned bit_width = Context.getTypeInfo(Ty).Width; | ||||||||
| 3766 | |||||||||
| 3767 | llvm::APInt Val(bit_width, 0, isSigned); | ||||||||
| 3768 | bool Overflowed = Literal.GetFixedPointValue(Val, scale); | ||||||||
| 3769 | bool ValIsZero = Val.isNullValue() && !Overflowed; | ||||||||
| 3770 | |||||||||
| 3771 | auto MaxVal = Context.getFixedPointMax(Ty).getValue(); | ||||||||
| 3772 | if (Literal.isFract && Val == MaxVal + 1 && !ValIsZero) | ||||||||
| 3773 | // Clause 6.4.4 - The value of a constant shall be in the range of | ||||||||
| 3774 | // representable values for its type, with exception for constants of a | ||||||||
| 3775 | // fract type with a value of exactly 1; such a constant shall denote | ||||||||
| 3776 | // the maximal value for the type. | ||||||||
| 3777 | --Val; | ||||||||
| 3778 | else if (Val.ugt(MaxVal) || Overflowed) | ||||||||
| 3779 | Diag(Tok.getLocation(), diag::err_too_large_for_fixed_point); | ||||||||
| 3780 | |||||||||
| 3781 | Res = FixedPointLiteral::CreateFromRawInt(Context, Val, Ty, | ||||||||
| 3782 | Tok.getLocation(), scale); | ||||||||
| 3783 | } else if (Literal.isFloatingLiteral()) { | ||||||||
| 3784 | QualType Ty; | ||||||||
| 3785 | if (Literal.isHalf){ | ||||||||
| 3786 | if (getOpenCLOptions().isEnabled("cl_khr_fp16")) | ||||||||
| 3787 | Ty = Context.HalfTy; | ||||||||
| 3788 | else { | ||||||||
| 3789 | Diag(Tok.getLocation(), diag::err_half_const_requires_fp16); | ||||||||
| 3790 | return ExprError(); | ||||||||
| 3791 | } | ||||||||
| 3792 | } else if (Literal.isFloat) | ||||||||
| 3793 | Ty = Context.FloatTy; | ||||||||
| 3794 | else if (Literal.isLong) | ||||||||
| 3795 | Ty = Context.LongDoubleTy; | ||||||||
| 3796 | else if (Literal.isFloat16) | ||||||||
| 3797 | Ty = Context.Float16Ty; | ||||||||
| 3798 | else if (Literal.isFloat128) | ||||||||
| 3799 | Ty = Context.Float128Ty; | ||||||||
| 3800 | else | ||||||||
| 3801 | Ty = Context.DoubleTy; | ||||||||
| 3802 | |||||||||
| 3803 | Res = BuildFloatingLiteral(*this, Literal, Ty, Tok.getLocation()); | ||||||||
| 3804 | |||||||||
| 3805 | if (Ty == Context.DoubleTy) { | ||||||||
| 3806 | if (getLangOpts().SinglePrecisionConstants) { | ||||||||
| 3807 | const BuiltinType *BTy = Ty->getAs<BuiltinType>(); | ||||||||
| 3808 | if (BTy->getKind() != BuiltinType::Float) { | ||||||||
| 3809 | Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); | ||||||||
| 3810 | } | ||||||||
| 3811 | } else if (getLangOpts().OpenCL && | ||||||||
| 3812 | !getOpenCLOptions().isEnabled("cl_khr_fp64")) { | ||||||||
| 3813 | // Impose single-precision float type when cl_khr_fp64 is not enabled. | ||||||||
| 3814 | Diag(Tok.getLocation(), diag::warn_double_const_requires_fp64); | ||||||||
| 3815 | Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); | ||||||||
| 3816 | } | ||||||||
| 3817 | } | ||||||||
| 3818 | } else if (!Literal.isIntegerLiteral()) { | ||||||||
| 3819 | return ExprError(); | ||||||||
| 3820 | } else { | ||||||||
| 3821 | QualType Ty; | ||||||||
| 3822 | |||||||||
| 3823 | // 'long long' is a C99 or C++11 feature. | ||||||||
| 3824 | if (!getLangOpts().C99 && Literal.isLongLong) { | ||||||||
| 3825 | if (getLangOpts().CPlusPlus) | ||||||||
| 3826 | Diag(Tok.getLocation(), | ||||||||
| 3827 | getLangOpts().CPlusPlus11 ? | ||||||||
| 3828 | diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); | ||||||||
| 3829 | else | ||||||||
| 3830 | Diag(Tok.getLocation(), diag::ext_c99_longlong); | ||||||||
| 3831 | } | ||||||||
| 3832 | |||||||||
| 3833 | // Get the value in the widest-possible width. | ||||||||
| 3834 | unsigned MaxWidth = Context.getTargetInfo().getIntMaxTWidth(); | ||||||||
| 3835 | llvm::APInt ResultVal(MaxWidth, 0); | ||||||||
| 3836 | |||||||||
| 3837 | if (Literal.GetIntegerValue(ResultVal)) { | ||||||||
| 3838 | // If this value didn't fit into uintmax_t, error and force to ull. | ||||||||
| 3839 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||||||
| 3840 | << /* Unsigned */ 1; | ||||||||
| 3841 | Ty = Context.UnsignedLongLongTy; | ||||||||
| 3842 | assert(Context.getTypeSize(Ty) == ResultVal.getBitWidth() &&((Context.getTypeSize(Ty) == ResultVal.getBitWidth() && "long long is not intmax_t?") ? static_cast<void> (0) : __assert_fail ("Context.getTypeSize(Ty) == ResultVal.getBitWidth() && \"long long is not intmax_t?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3843, __PRETTY_FUNCTION__)) | ||||||||
| 3843 | "long long is not intmax_t?")((Context.getTypeSize(Ty) == ResultVal.getBitWidth() && "long long is not intmax_t?") ? static_cast<void> (0) : __assert_fail ("Context.getTypeSize(Ty) == ResultVal.getBitWidth() && \"long long is not intmax_t?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3843, __PRETTY_FUNCTION__)); | ||||||||
| 3844 | } else { | ||||||||
| 3845 | // If this value fits into a ULL, try to figure out what else it fits into | ||||||||
| 3846 | // according to the rules of C99 6.4.4.1p5. | ||||||||
| 3847 | |||||||||
| 3848 | // Octal, Hexadecimal, and integers with a U suffix are allowed to | ||||||||
| 3849 | // be an unsigned int. | ||||||||
| 3850 | bool AllowUnsigned = Literal.isUnsigned || Literal.getRadix() != 10; | ||||||||
| 3851 | |||||||||
| 3852 | // Check from smallest to largest, picking the smallest type we can. | ||||||||
| 3853 | unsigned Width = 0; | ||||||||
| 3854 | |||||||||
| 3855 | // Microsoft specific integer suffixes are explicitly sized. | ||||||||
| 3856 | if (Literal.MicrosoftInteger) { | ||||||||
| 3857 | if (Literal.MicrosoftInteger == 8 && !Literal.isUnsigned) { | ||||||||
| 3858 | Width = 8; | ||||||||
| 3859 | Ty = Context.CharTy; | ||||||||
| 3860 | } else { | ||||||||
| 3861 | Width = Literal.MicrosoftInteger; | ||||||||
| 3862 | Ty = Context.getIntTypeForBitwidth(Width, | ||||||||
| 3863 | /*Signed=*/!Literal.isUnsigned); | ||||||||
| 3864 | } | ||||||||
| 3865 | } | ||||||||
| 3866 | |||||||||
| 3867 | if (Ty.isNull() && !Literal.isLong && !Literal.isLongLong) { | ||||||||
| 3868 | // Are int/unsigned possibilities? | ||||||||
| 3869 | unsigned IntSize = Context.getTargetInfo().getIntWidth(); | ||||||||
| 3870 | |||||||||
| 3871 | // Does it fit in a unsigned int? | ||||||||
| 3872 | if (ResultVal.isIntN(IntSize)) { | ||||||||
| 3873 | // Does it fit in a signed int? | ||||||||
| 3874 | if (!Literal.isUnsigned && ResultVal[IntSize-1] == 0) | ||||||||
| 3875 | Ty = Context.IntTy; | ||||||||
| 3876 | else if (AllowUnsigned) | ||||||||
| 3877 | Ty = Context.UnsignedIntTy; | ||||||||
| 3878 | Width = IntSize; | ||||||||
| 3879 | } | ||||||||
| 3880 | } | ||||||||
| 3881 | |||||||||
| 3882 | // Are long/unsigned long possibilities? | ||||||||
| 3883 | if (Ty.isNull() && !Literal.isLongLong) { | ||||||||
| 3884 | unsigned LongSize = Context.getTargetInfo().getLongWidth(); | ||||||||
| 3885 | |||||||||
| 3886 | // Does it fit in a unsigned long? | ||||||||
| 3887 | if (ResultVal.isIntN(LongSize)) { | ||||||||
| 3888 | // Does it fit in a signed long? | ||||||||
| 3889 | if (!Literal.isUnsigned && ResultVal[LongSize-1] == 0) | ||||||||
| 3890 | Ty = Context.LongTy; | ||||||||
| 3891 | else if (AllowUnsigned) | ||||||||
| 3892 | Ty = Context.UnsignedLongTy; | ||||||||
| 3893 | // Check according to the rules of C90 6.1.3.2p5. C++03 [lex.icon]p2 | ||||||||
| 3894 | // is compatible. | ||||||||
| 3895 | else if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11) { | ||||||||
| 3896 | const unsigned LongLongSize = | ||||||||
| 3897 | Context.getTargetInfo().getLongLongWidth(); | ||||||||
| 3898 | Diag(Tok.getLocation(), | ||||||||
| 3899 | getLangOpts().CPlusPlus | ||||||||
| 3900 | ? Literal.isLong | ||||||||
| 3901 | ? diag::warn_old_implicitly_unsigned_long_cxx | ||||||||
| 3902 | : /*C++98 UB*/ diag:: | ||||||||
| 3903 | ext_old_implicitly_unsigned_long_cxx | ||||||||
| 3904 | : diag::warn_old_implicitly_unsigned_long) | ||||||||
| 3905 | << (LongLongSize > LongSize ? /*will have type 'long long'*/ 0 | ||||||||
| 3906 | : /*will be ill-formed*/ 1); | ||||||||
| 3907 | Ty = Context.UnsignedLongTy; | ||||||||
| 3908 | } | ||||||||
| 3909 | Width = LongSize; | ||||||||
| 3910 | } | ||||||||
| 3911 | } | ||||||||
| 3912 | |||||||||
| 3913 | // Check long long if needed. | ||||||||
| 3914 | if (Ty.isNull()) { | ||||||||
| 3915 | unsigned LongLongSize = Context.getTargetInfo().getLongLongWidth(); | ||||||||
| 3916 | |||||||||
| 3917 | // Does it fit in a unsigned long long? | ||||||||
| 3918 | if (ResultVal.isIntN(LongLongSize)) { | ||||||||
| 3919 | // Does it fit in a signed long long? | ||||||||
| 3920 | // To be compatible with MSVC, hex integer literals ending with the | ||||||||
| 3921 | // LL or i64 suffix are always signed in Microsoft mode. | ||||||||
| 3922 | if (!Literal.isUnsigned && (ResultVal[LongLongSize-1] == 0 || | ||||||||
| 3923 | (getLangOpts().MSVCCompat && Literal.isLongLong))) | ||||||||
| 3924 | Ty = Context.LongLongTy; | ||||||||
| 3925 | else if (AllowUnsigned) | ||||||||
| 3926 | Ty = Context.UnsignedLongLongTy; | ||||||||
| 3927 | Width = LongLongSize; | ||||||||
| 3928 | } | ||||||||
| 3929 | } | ||||||||
| 3930 | |||||||||
| 3931 | // If we still couldn't decide a type, we probably have something that | ||||||||
| 3932 | // does not fit in a signed long long, but has no U suffix. | ||||||||
| 3933 | if (Ty.isNull()) { | ||||||||
| 3934 | Diag(Tok.getLocation(), diag::ext_integer_literal_too_large_for_signed); | ||||||||
| 3935 | Ty = Context.UnsignedLongLongTy; | ||||||||
| 3936 | Width = Context.getTargetInfo().getLongLongWidth(); | ||||||||
| 3937 | } | ||||||||
| 3938 | |||||||||
| 3939 | if (ResultVal.getBitWidth() != Width) | ||||||||
| 3940 | ResultVal = ResultVal.trunc(Width); | ||||||||
| 3941 | } | ||||||||
| 3942 | Res = IntegerLiteral::Create(Context, ResultVal, Ty, Tok.getLocation()); | ||||||||
| 3943 | } | ||||||||
| 3944 | |||||||||
| 3945 | // If this is an imaginary literal, create the ImaginaryLiteral wrapper. | ||||||||
| 3946 | if (Literal.isImaginary) { | ||||||||
| 3947 | Res = new (Context) ImaginaryLiteral(Res, | ||||||||
| 3948 | Context.getComplexType(Res->getType())); | ||||||||
| 3949 | |||||||||
| 3950 | Diag(Tok.getLocation(), diag::ext_imaginary_constant); | ||||||||
| 3951 | } | ||||||||
| 3952 | return Res; | ||||||||
| 3953 | } | ||||||||
| 3954 | |||||||||
| 3955 | ExprResult Sema::ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E) { | ||||||||
| 3956 | assert(E && "ActOnParenExpr() missing expr")((E && "ActOnParenExpr() missing expr") ? static_cast <void> (0) : __assert_fail ("E && \"ActOnParenExpr() missing expr\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3956, __PRETTY_FUNCTION__)); | ||||||||
| 3957 | return new (Context) ParenExpr(L, R, E); | ||||||||
| 3958 | } | ||||||||
| 3959 | |||||||||
| 3960 | static bool CheckVecStepTraitOperandType(Sema &S, QualType T, | ||||||||
| 3961 | SourceLocation Loc, | ||||||||
| 3962 | SourceRange ArgRange) { | ||||||||
| 3963 | // [OpenCL 1.1 6.11.12] "The vec_step built-in function takes a built-in | ||||||||
| 3964 | // scalar or vector data type argument..." | ||||||||
| 3965 | // Every built-in scalar type (OpenCL 1.1 6.1.1) is either an arithmetic | ||||||||
| 3966 | // type (C99 6.2.5p18) or void. | ||||||||
| 3967 | if (!(T->isArithmeticType() || T->isVoidType() || T->isVectorType())) { | ||||||||
| 3968 | S.Diag(Loc, diag::err_vecstep_non_scalar_vector_type) | ||||||||
| 3969 | << T << ArgRange; | ||||||||
| 3970 | return true; | ||||||||
| 3971 | } | ||||||||
| 3972 | |||||||||
| 3973 | assert((T->isVoidType() || !T->isIncompleteType()) &&(((T->isVoidType() || !T->isIncompleteType()) && "Scalar types should always be complete") ? static_cast<void > (0) : __assert_fail ("(T->isVoidType() || !T->isIncompleteType()) && \"Scalar types should always be complete\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3974, __PRETTY_FUNCTION__)) | ||||||||
| 3974 | "Scalar types should always be complete")(((T->isVoidType() || !T->isIncompleteType()) && "Scalar types should always be complete") ? static_cast<void > (0) : __assert_fail ("(T->isVoidType() || !T->isIncompleteType()) && \"Scalar types should always be complete\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 3974, __PRETTY_FUNCTION__)); | ||||||||
| 3975 | return false; | ||||||||
| 3976 | } | ||||||||
| 3977 | |||||||||
| 3978 | static bool CheckExtensionTraitOperandType(Sema &S, QualType T, | ||||||||
| 3979 | SourceLocation Loc, | ||||||||
| 3980 | SourceRange ArgRange, | ||||||||
| 3981 | UnaryExprOrTypeTrait TraitKind) { | ||||||||
| 3982 | // Invalid types must be hard errors for SFINAE in C++. | ||||||||
| 3983 | if (S.LangOpts.CPlusPlus) | ||||||||
| 3984 | return true; | ||||||||
| 3985 | |||||||||
| 3986 | // C99 6.5.3.4p1: | ||||||||
| 3987 | if (T->isFunctionType() && | ||||||||
| 3988 | (TraitKind == UETT_SizeOf || TraitKind == UETT_AlignOf || | ||||||||
| 3989 | TraitKind == UETT_PreferredAlignOf)) { | ||||||||
| 3990 | // sizeof(function)/alignof(function) is allowed as an extension. | ||||||||
| 3991 | S.Diag(Loc, diag::ext_sizeof_alignof_function_type) | ||||||||
| 3992 | << getTraitSpelling(TraitKind) << ArgRange; | ||||||||
| 3993 | return false; | ||||||||
| 3994 | } | ||||||||
| 3995 | |||||||||
| 3996 | // Allow sizeof(void)/alignof(void) as an extension, unless in OpenCL where | ||||||||
| 3997 | // this is an error (OpenCL v1.1 s6.3.k) | ||||||||
| 3998 | if (T->isVoidType()) { | ||||||||
| 3999 | unsigned DiagID = S.LangOpts.OpenCL ? diag::err_opencl_sizeof_alignof_type | ||||||||
| 4000 | : diag::ext_sizeof_alignof_void_type; | ||||||||
| 4001 | S.Diag(Loc, DiagID) << getTraitSpelling(TraitKind) << ArgRange; | ||||||||
| 4002 | return false; | ||||||||
| 4003 | } | ||||||||
| 4004 | |||||||||
| 4005 | return true; | ||||||||
| 4006 | } | ||||||||
| 4007 | |||||||||
| 4008 | static bool CheckObjCTraitOperandConstraints(Sema &S, QualType T, | ||||||||
| 4009 | SourceLocation Loc, | ||||||||
| 4010 | SourceRange ArgRange, | ||||||||
| 4011 | UnaryExprOrTypeTrait TraitKind) { | ||||||||
| 4012 | // Reject sizeof(interface) and sizeof(interface<proto>) if the | ||||||||
| 4013 | // runtime doesn't allow it. | ||||||||
| 4014 | if (!S.LangOpts.ObjCRuntime.allowsSizeofAlignof() && T->isObjCObjectType()) { | ||||||||
| 4015 | S.Diag(Loc, diag::err_sizeof_nonfragile_interface) | ||||||||
| 4016 | << T << (TraitKind == UETT_SizeOf) | ||||||||
| 4017 | << ArgRange; | ||||||||
| 4018 | return true; | ||||||||
| 4019 | } | ||||||||
| 4020 | |||||||||
| 4021 | return false; | ||||||||
| 4022 | } | ||||||||
| 4023 | |||||||||
| 4024 | /// Check whether E is a pointer from a decayed array type (the decayed | ||||||||
| 4025 | /// pointer type is equal to T) and emit a warning if it is. | ||||||||
| 4026 | static void warnOnSizeofOnArrayDecay(Sema &S, SourceLocation Loc, QualType T, | ||||||||
| 4027 | Expr *E) { | ||||||||
| 4028 | // Don't warn if the operation changed the type. | ||||||||
| 4029 | if (T != E->getType()) | ||||||||
| 4030 | return; | ||||||||
| 4031 | |||||||||
| 4032 | // Now look for array decays. | ||||||||
| 4033 | ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E); | ||||||||
| 4034 | if (!ICE || ICE->getCastKind() != CK_ArrayToPointerDecay) | ||||||||
| 4035 | return; | ||||||||
| 4036 | |||||||||
| 4037 | S.Diag(Loc, diag::warn_sizeof_array_decay) << ICE->getSourceRange() | ||||||||
| 4038 | << ICE->getType() | ||||||||
| 4039 | << ICE->getSubExpr()->getType(); | ||||||||
| 4040 | } | ||||||||
| 4041 | |||||||||
| 4042 | /// Check the constraints on expression operands to unary type expression | ||||||||
| 4043 | /// and type traits. | ||||||||
| 4044 | /// | ||||||||
| 4045 | /// Completes any types necessary and validates the constraints on the operand | ||||||||
| 4046 | /// expression. The logic mostly mirrors the type-based overload, but may modify | ||||||||
| 4047 | /// the expression as it completes the type for that expression through template | ||||||||
| 4048 | /// instantiation, etc. | ||||||||
| 4049 | bool Sema::CheckUnaryExprOrTypeTraitOperand(Expr *E, | ||||||||
| 4050 | UnaryExprOrTypeTrait ExprKind) { | ||||||||
| 4051 | QualType ExprTy = E->getType(); | ||||||||
| 4052 | assert(!ExprTy->isReferenceType())((!ExprTy->isReferenceType()) ? static_cast<void> (0 ) : __assert_fail ("!ExprTy->isReferenceType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4052, __PRETTY_FUNCTION__)); | ||||||||
| 4053 | |||||||||
| 4054 | bool IsUnevaluatedOperand = | ||||||||
| 4055 | (ExprKind == UETT_SizeOf || ExprKind == UETT_AlignOf || | ||||||||
| 4056 | ExprKind == UETT_PreferredAlignOf); | ||||||||
| 4057 | if (IsUnevaluatedOperand) { | ||||||||
| 4058 | ExprResult Result = CheckUnevaluatedOperand(E); | ||||||||
| 4059 | if (Result.isInvalid()) | ||||||||
| 4060 | return true; | ||||||||
| 4061 | E = Result.get(); | ||||||||
| 4062 | } | ||||||||
| 4063 | |||||||||
| 4064 | if (ExprKind == UETT_VecStep) | ||||||||
| 4065 | return CheckVecStepTraitOperandType(*this, ExprTy, E->getExprLoc(), | ||||||||
| 4066 | E->getSourceRange()); | ||||||||
| 4067 | |||||||||
| 4068 | // Explicitly list some types as extensions. | ||||||||
| 4069 | if (!CheckExtensionTraitOperandType(*this, ExprTy, E->getExprLoc(), | ||||||||
| 4070 | E->getSourceRange(), ExprKind)) | ||||||||
| 4071 | return false; | ||||||||
| 4072 | |||||||||
| 4073 | // 'alignof' applied to an expression only requires the base element type of | ||||||||
| 4074 | // the expression to be complete. 'sizeof' requires the expression's type to | ||||||||
| 4075 | // be complete (and will attempt to complete it if it's an array of unknown | ||||||||
| 4076 | // bound). | ||||||||
| 4077 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||||||
| 4078 | if (RequireCompleteSizedType( | ||||||||
| 4079 | E->getExprLoc(), Context.getBaseElementType(E->getType()), | ||||||||
| 4080 | diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||||||
| 4081 | getTraitSpelling(ExprKind), E->getSourceRange())) | ||||||||
| 4082 | return true; | ||||||||
| 4083 | } else { | ||||||||
| 4084 | if (RequireCompleteSizedExprType( | ||||||||
| 4085 | E, diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||||||
| 4086 | getTraitSpelling(ExprKind), E->getSourceRange())) | ||||||||
| 4087 | return true; | ||||||||
| 4088 | } | ||||||||
| 4089 | |||||||||
| 4090 | // Completing the expression's type may have changed it. | ||||||||
| 4091 | ExprTy = E->getType(); | ||||||||
| 4092 | assert(!ExprTy->isReferenceType())((!ExprTy->isReferenceType()) ? static_cast<void> (0 ) : __assert_fail ("!ExprTy->isReferenceType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4092, __PRETTY_FUNCTION__)); | ||||||||
| 4093 | |||||||||
| 4094 | if (ExprTy->isFunctionType()) { | ||||||||
| 4095 | Diag(E->getExprLoc(), diag::err_sizeof_alignof_function_type) | ||||||||
| 4096 | << getTraitSpelling(ExprKind) << E->getSourceRange(); | ||||||||
| 4097 | return true; | ||||||||
| 4098 | } | ||||||||
| 4099 | |||||||||
| 4100 | // The operand for sizeof and alignof is in an unevaluated expression context, | ||||||||
| 4101 | // so side effects could result in unintended consequences. | ||||||||
| 4102 | if (IsUnevaluatedOperand && !inTemplateInstantiation() && | ||||||||
| 4103 | E->HasSideEffects(Context, false)) | ||||||||
| 4104 | Diag(E->getExprLoc(), diag::warn_side_effects_unevaluated_context); | ||||||||
| 4105 | |||||||||
| 4106 | if (CheckObjCTraitOperandConstraints(*this, ExprTy, E->getExprLoc(), | ||||||||
| 4107 | E->getSourceRange(), ExprKind)) | ||||||||
| 4108 | return true; | ||||||||
| 4109 | |||||||||
| 4110 | if (ExprKind == UETT_SizeOf) { | ||||||||
| 4111 | if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { | ||||||||
| 4112 | if (ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(DeclRef->getFoundDecl())) { | ||||||||
| 4113 | QualType OType = PVD->getOriginalType(); | ||||||||
| 4114 | QualType Type = PVD->getType(); | ||||||||
| 4115 | if (Type->isPointerType() && OType->isArrayType()) { | ||||||||
| 4116 | Diag(E->getExprLoc(), diag::warn_sizeof_array_param) | ||||||||
| 4117 | << Type << OType; | ||||||||
| 4118 | Diag(PVD->getLocation(), diag::note_declared_at); | ||||||||
| 4119 | } | ||||||||
| 4120 | } | ||||||||
| 4121 | } | ||||||||
| 4122 | |||||||||
| 4123 | // Warn on "sizeof(array op x)" and "sizeof(x op array)", where the array | ||||||||
| 4124 | // decays into a pointer and returns an unintended result. This is most | ||||||||
| 4125 | // likely a typo for "sizeof(array) op x". | ||||||||
| 4126 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E->IgnoreParens())) { | ||||||||
| 4127 | warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), | ||||||||
| 4128 | BO->getLHS()); | ||||||||
| 4129 | warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), | ||||||||
| 4130 | BO->getRHS()); | ||||||||
| 4131 | } | ||||||||
| 4132 | } | ||||||||
| 4133 | |||||||||
| 4134 | return false; | ||||||||
| 4135 | } | ||||||||
| 4136 | |||||||||
| 4137 | /// Check the constraints on operands to unary expression and type | ||||||||
| 4138 | /// traits. | ||||||||
| 4139 | /// | ||||||||
| 4140 | /// This will complete any types necessary, and validate the various constraints | ||||||||
| 4141 | /// on those operands. | ||||||||
| 4142 | /// | ||||||||
| 4143 | /// The UsualUnaryConversions() function is *not* called by this routine. | ||||||||
| 4144 | /// C99 6.3.2.1p[2-4] all state: | ||||||||
| 4145 | /// Except when it is the operand of the sizeof operator ... | ||||||||
| 4146 | /// | ||||||||
| 4147 | /// C++ [expr.sizeof]p4 | ||||||||
| 4148 | /// The lvalue-to-rvalue, array-to-pointer, and function-to-pointer | ||||||||
| 4149 | /// standard conversions are not applied to the operand of sizeof. | ||||||||
| 4150 | /// | ||||||||
| 4151 | /// This policy is followed for all of the unary trait expressions. | ||||||||
| 4152 | bool Sema::CheckUnaryExprOrTypeTraitOperand(QualType ExprType, | ||||||||
| 4153 | SourceLocation OpLoc, | ||||||||
| 4154 | SourceRange ExprRange, | ||||||||
| 4155 | UnaryExprOrTypeTrait ExprKind) { | ||||||||
| 4156 | if (ExprType->isDependentType()) | ||||||||
| 4157 | return false; | ||||||||
| 4158 | |||||||||
| 4159 | // C++ [expr.sizeof]p2: | ||||||||
| 4160 | // When applied to a reference or a reference type, the result | ||||||||
| 4161 | // is the size of the referenced type. | ||||||||
| 4162 | // C++11 [expr.alignof]p3: | ||||||||
| 4163 | // When alignof is applied to a reference type, the result | ||||||||
| 4164 | // shall be the alignment of the referenced type. | ||||||||
| 4165 | if (const ReferenceType *Ref = ExprType->getAs<ReferenceType>()) | ||||||||
| 4166 | ExprType = Ref->getPointeeType(); | ||||||||
| 4167 | |||||||||
| 4168 | // C11 6.5.3.4/3, C++11 [expr.alignof]p3: | ||||||||
| 4169 | // When alignof or _Alignof is applied to an array type, the result | ||||||||
| 4170 | // is the alignment of the element type. | ||||||||
| 4171 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf || | ||||||||
| 4172 | ExprKind == UETT_OpenMPRequiredSimdAlign) | ||||||||
| 4173 | ExprType = Context.getBaseElementType(ExprType); | ||||||||
| 4174 | |||||||||
| 4175 | if (ExprKind == UETT_VecStep) | ||||||||
| 4176 | return CheckVecStepTraitOperandType(*this, ExprType, OpLoc, ExprRange); | ||||||||
| 4177 | |||||||||
| 4178 | // Explicitly list some types as extensions. | ||||||||
| 4179 | if (!CheckExtensionTraitOperandType(*this, ExprType, OpLoc, ExprRange, | ||||||||
| 4180 | ExprKind)) | ||||||||
| 4181 | return false; | ||||||||
| 4182 | |||||||||
| 4183 | if (RequireCompleteSizedType( | ||||||||
| 4184 | OpLoc, ExprType, diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||||||
| 4185 | getTraitSpelling(ExprKind), ExprRange)) | ||||||||
| 4186 | return true; | ||||||||
| 4187 | |||||||||
| 4188 | if (ExprType->isFunctionType()) { | ||||||||
| 4189 | Diag(OpLoc, diag::err_sizeof_alignof_function_type) | ||||||||
| 4190 | << getTraitSpelling(ExprKind) << ExprRange; | ||||||||
| 4191 | return true; | ||||||||
| 4192 | } | ||||||||
| 4193 | |||||||||
| 4194 | if (CheckObjCTraitOperandConstraints(*this, ExprType, OpLoc, ExprRange, | ||||||||
| 4195 | ExprKind)) | ||||||||
| 4196 | return true; | ||||||||
| 4197 | |||||||||
| 4198 | return false; | ||||||||
| 4199 | } | ||||||||
| 4200 | |||||||||
| 4201 | static bool CheckAlignOfExpr(Sema &S, Expr *E, UnaryExprOrTypeTrait ExprKind) { | ||||||||
| 4202 | // Cannot know anything else if the expression is dependent. | ||||||||
| 4203 | if (E->isTypeDependent()) | ||||||||
| 4204 | return false; | ||||||||
| 4205 | |||||||||
| 4206 | if (E->getObjectKind() == OK_BitField) { | ||||||||
| 4207 | S.Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) | ||||||||
| 4208 | << 1 << E->getSourceRange(); | ||||||||
| 4209 | return true; | ||||||||
| 4210 | } | ||||||||
| 4211 | |||||||||
| 4212 | ValueDecl *D = nullptr; | ||||||||
| 4213 | Expr *Inner = E->IgnoreParens(); | ||||||||
| 4214 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Inner)) { | ||||||||
| 4215 | D = DRE->getDecl(); | ||||||||
| 4216 | } else if (MemberExpr *ME = dyn_cast<MemberExpr>(Inner)) { | ||||||||
| 4217 | D = ME->getMemberDecl(); | ||||||||
| 4218 | } | ||||||||
| 4219 | |||||||||
| 4220 | // If it's a field, require the containing struct to have a | ||||||||
| 4221 | // complete definition so that we can compute the layout. | ||||||||
| 4222 | // | ||||||||
| 4223 | // This can happen in C++11 onwards, either by naming the member | ||||||||
| 4224 | // in a way that is not transformed into a member access expression | ||||||||
| 4225 | // (in an unevaluated operand, for instance), or by naming the member | ||||||||
| 4226 | // in a trailing-return-type. | ||||||||
| 4227 | // | ||||||||
| 4228 | // For the record, since __alignof__ on expressions is a GCC | ||||||||
| 4229 | // extension, GCC seems to permit this but always gives the | ||||||||
| 4230 | // nonsensical answer 0. | ||||||||
| 4231 | // | ||||||||
| 4232 | // We don't really need the layout here --- we could instead just | ||||||||
| 4233 | // directly check for all the appropriate alignment-lowing | ||||||||
| 4234 | // attributes --- but that would require duplicating a lot of | ||||||||
| 4235 | // logic that just isn't worth duplicating for such a marginal | ||||||||
| 4236 | // use-case. | ||||||||
| 4237 | if (FieldDecl *FD = dyn_cast_or_null<FieldDecl>(D)) { | ||||||||
| 4238 | // Fast path this check, since we at least know the record has a | ||||||||
| 4239 | // definition if we can find a member of it. | ||||||||
| 4240 | if (!FD->getParent()->isCompleteDefinition()) { | ||||||||
| 4241 | S.Diag(E->getExprLoc(), diag::err_alignof_member_of_incomplete_type) | ||||||||
| 4242 | << E->getSourceRange(); | ||||||||
| 4243 | return true; | ||||||||
| 4244 | } | ||||||||
| 4245 | |||||||||
| 4246 | // Otherwise, if it's a field, and the field doesn't have | ||||||||
| 4247 | // reference type, then it must have a complete type (or be a | ||||||||
| 4248 | // flexible array member, which we explicitly want to | ||||||||
| 4249 | // white-list anyway), which makes the following checks trivial. | ||||||||
| 4250 | if (!FD->getType()->isReferenceType()) | ||||||||
| 4251 | return false; | ||||||||
| 4252 | } | ||||||||
| 4253 | |||||||||
| 4254 | return S.CheckUnaryExprOrTypeTraitOperand(E, ExprKind); | ||||||||
| 4255 | } | ||||||||
| 4256 | |||||||||
| 4257 | bool Sema::CheckVecStepExpr(Expr *E) { | ||||||||
| 4258 | E = E->IgnoreParens(); | ||||||||
| 4259 | |||||||||
| 4260 | // Cannot know anything else if the expression is dependent. | ||||||||
| 4261 | if (E->isTypeDependent()) | ||||||||
| 4262 | return false; | ||||||||
| 4263 | |||||||||
| 4264 | return CheckUnaryExprOrTypeTraitOperand(E, UETT_VecStep); | ||||||||
| 4265 | } | ||||||||
| 4266 | |||||||||
| 4267 | static void captureVariablyModifiedType(ASTContext &Context, QualType T, | ||||||||
| 4268 | CapturingScopeInfo *CSI) { | ||||||||
| 4269 | assert(T->isVariablyModifiedType())((T->isVariablyModifiedType()) ? static_cast<void> ( 0) : __assert_fail ("T->isVariablyModifiedType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4269, __PRETTY_FUNCTION__)); | ||||||||
| 4270 | assert(CSI != nullptr)((CSI != nullptr) ? static_cast<void> (0) : __assert_fail ("CSI != nullptr", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4270, __PRETTY_FUNCTION__)); | ||||||||
| 4271 | |||||||||
| 4272 | // We're going to walk down into the type and look for VLA expressions. | ||||||||
| 4273 | do { | ||||||||
| 4274 | const Type *Ty = T.getTypePtr(); | ||||||||
| 4275 | switch (Ty->getTypeClass()) { | ||||||||
| 4276 | #define TYPE(Class, Base) | ||||||||
| 4277 | #define ABSTRACT_TYPE(Class, Base) | ||||||||
| 4278 | #define NON_CANONICAL_TYPE(Class, Base) | ||||||||
| 4279 | #define DEPENDENT_TYPE(Class, Base) case Type::Class: | ||||||||
| 4280 | #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) | ||||||||
| 4281 | #include "clang/AST/TypeNodes.inc" | ||||||||
| 4282 | T = QualType(); | ||||||||
| 4283 | break; | ||||||||
| 4284 | // These types are never variably-modified. | ||||||||
| 4285 | case Type::Builtin: | ||||||||
| 4286 | case Type::Complex: | ||||||||
| 4287 | case Type::Vector: | ||||||||
| 4288 | case Type::ExtVector: | ||||||||
| 4289 | case Type::ConstantMatrix: | ||||||||
| 4290 | case Type::Record: | ||||||||
| 4291 | case Type::Enum: | ||||||||
| 4292 | case Type::Elaborated: | ||||||||
| 4293 | case Type::TemplateSpecialization: | ||||||||
| 4294 | case Type::ObjCObject: | ||||||||
| 4295 | case Type::ObjCInterface: | ||||||||
| 4296 | case Type::ObjCObjectPointer: | ||||||||
| 4297 | case Type::ObjCTypeParam: | ||||||||
| 4298 | case Type::Pipe: | ||||||||
| 4299 | case Type::ExtInt: | ||||||||
| 4300 | llvm_unreachable("type class is never variably-modified!")::llvm::llvm_unreachable_internal("type class is never variably-modified!" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4300); | ||||||||
| 4301 | case Type::Adjusted: | ||||||||
| 4302 | T = cast<AdjustedType>(Ty)->getOriginalType(); | ||||||||
| 4303 | break; | ||||||||
| 4304 | case Type::Decayed: | ||||||||
| 4305 | T = cast<DecayedType>(Ty)->getPointeeType(); | ||||||||
| 4306 | break; | ||||||||
| 4307 | case Type::Pointer: | ||||||||
| 4308 | T = cast<PointerType>(Ty)->getPointeeType(); | ||||||||
| 4309 | break; | ||||||||
| 4310 | case Type::BlockPointer: | ||||||||
| 4311 | T = cast<BlockPointerType>(Ty)->getPointeeType(); | ||||||||
| 4312 | break; | ||||||||
| 4313 | case Type::LValueReference: | ||||||||
| 4314 | case Type::RValueReference: | ||||||||
| 4315 | T = cast<ReferenceType>(Ty)->getPointeeType(); | ||||||||
| 4316 | break; | ||||||||
| 4317 | case Type::MemberPointer: | ||||||||
| 4318 | T = cast<MemberPointerType>(Ty)->getPointeeType(); | ||||||||
| 4319 | break; | ||||||||
| 4320 | case Type::ConstantArray: | ||||||||
| 4321 | case Type::IncompleteArray: | ||||||||
| 4322 | // Losing element qualification here is fine. | ||||||||
| 4323 | T = cast<ArrayType>(Ty)->getElementType(); | ||||||||
| 4324 | break; | ||||||||
| 4325 | case Type::VariableArray: { | ||||||||
| 4326 | // Losing element qualification here is fine. | ||||||||
| 4327 | const VariableArrayType *VAT = cast<VariableArrayType>(Ty); | ||||||||
| 4328 | |||||||||
| 4329 | // Unknown size indication requires no size computation. | ||||||||
| 4330 | // Otherwise, evaluate and record it. | ||||||||
| 4331 | auto Size = VAT->getSizeExpr(); | ||||||||
| 4332 | if (Size && !CSI->isVLATypeCaptured(VAT) && | ||||||||
| 4333 | (isa<CapturedRegionScopeInfo>(CSI) || isa<LambdaScopeInfo>(CSI))) | ||||||||
| 4334 | CSI->addVLATypeCapture(Size->getExprLoc(), VAT, Context.getSizeType()); | ||||||||
| 4335 | |||||||||
| 4336 | T = VAT->getElementType(); | ||||||||
| 4337 | break; | ||||||||
| 4338 | } | ||||||||
| 4339 | case Type::FunctionProto: | ||||||||
| 4340 | case Type::FunctionNoProto: | ||||||||
| 4341 | T = cast<FunctionType>(Ty)->getReturnType(); | ||||||||
| 4342 | break; | ||||||||
| 4343 | case Type::Paren: | ||||||||
| 4344 | case Type::TypeOf: | ||||||||
| 4345 | case Type::UnaryTransform: | ||||||||
| 4346 | case Type::Attributed: | ||||||||
| 4347 | case Type::SubstTemplateTypeParm: | ||||||||
| 4348 | case Type::MacroQualified: | ||||||||
| 4349 | // Keep walking after single level desugaring. | ||||||||
| 4350 | T = T.getSingleStepDesugaredType(Context); | ||||||||
| 4351 | break; | ||||||||
| 4352 | case Type::Typedef: | ||||||||
| 4353 | T = cast<TypedefType>(Ty)->desugar(); | ||||||||
| 4354 | break; | ||||||||
| 4355 | case Type::Decltype: | ||||||||
| 4356 | T = cast<DecltypeType>(Ty)->desugar(); | ||||||||
| 4357 | break; | ||||||||
| 4358 | case Type::Auto: | ||||||||
| 4359 | case Type::DeducedTemplateSpecialization: | ||||||||
| 4360 | T = cast<DeducedType>(Ty)->getDeducedType(); | ||||||||
| 4361 | break; | ||||||||
| 4362 | case Type::TypeOfExpr: | ||||||||
| 4363 | T = cast<TypeOfExprType>(Ty)->getUnderlyingExpr()->getType(); | ||||||||
| 4364 | break; | ||||||||
| 4365 | case Type::Atomic: | ||||||||
| 4366 | T = cast<AtomicType>(Ty)->getValueType(); | ||||||||
| 4367 | break; | ||||||||
| 4368 | } | ||||||||
| 4369 | } while (!T.isNull() && T->isVariablyModifiedType()); | ||||||||
| 4370 | } | ||||||||
| 4371 | |||||||||
| 4372 | /// Build a sizeof or alignof expression given a type operand. | ||||||||
| 4373 | ExprResult | ||||||||
| 4374 | Sema::CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, | ||||||||
| 4375 | SourceLocation OpLoc, | ||||||||
| 4376 | UnaryExprOrTypeTrait ExprKind, | ||||||||
| 4377 | SourceRange R) { | ||||||||
| 4378 | if (!TInfo) | ||||||||
| 4379 | return ExprError(); | ||||||||
| 4380 | |||||||||
| 4381 | QualType T = TInfo->getType(); | ||||||||
| 4382 | |||||||||
| 4383 | if (!T->isDependentType() && | ||||||||
| 4384 | CheckUnaryExprOrTypeTraitOperand(T, OpLoc, R, ExprKind)) | ||||||||
| 4385 | return ExprError(); | ||||||||
| 4386 | |||||||||
| 4387 | if (T->isVariablyModifiedType() && FunctionScopes.size() > 1) { | ||||||||
| 4388 | if (auto *TT = T->getAs<TypedefType>()) { | ||||||||
| 4389 | for (auto I = FunctionScopes.rbegin(), | ||||||||
| 4390 | E = std::prev(FunctionScopes.rend()); | ||||||||
| 4391 | I != E; ++I) { | ||||||||
| 4392 | auto *CSI = dyn_cast<CapturingScopeInfo>(*I); | ||||||||
| 4393 | if (CSI == nullptr) | ||||||||
| 4394 | break; | ||||||||
| 4395 | DeclContext *DC = nullptr; | ||||||||
| 4396 | if (auto *LSI = dyn_cast<LambdaScopeInfo>(CSI)) | ||||||||
| 4397 | DC = LSI->CallOperator; | ||||||||
| 4398 | else if (auto *CRSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) | ||||||||
| 4399 | DC = CRSI->TheCapturedDecl; | ||||||||
| 4400 | else if (auto *BSI = dyn_cast<BlockScopeInfo>(CSI)) | ||||||||
| 4401 | DC = BSI->TheDecl; | ||||||||
| 4402 | if (DC) { | ||||||||
| 4403 | if (DC->containsDecl(TT->getDecl())) | ||||||||
| 4404 | break; | ||||||||
| 4405 | captureVariablyModifiedType(Context, T, CSI); | ||||||||
| 4406 | } | ||||||||
| 4407 | } | ||||||||
| 4408 | } | ||||||||
| 4409 | } | ||||||||
| 4410 | |||||||||
| 4411 | // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. | ||||||||
| 4412 | return new (Context) UnaryExprOrTypeTraitExpr( | ||||||||
| 4413 | ExprKind, TInfo, Context.getSizeType(), OpLoc, R.getEnd()); | ||||||||
| 4414 | } | ||||||||
| 4415 | |||||||||
| 4416 | /// Build a sizeof or alignof expression given an expression | ||||||||
| 4417 | /// operand. | ||||||||
| 4418 | ExprResult | ||||||||
| 4419 | Sema::CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, | ||||||||
| 4420 | UnaryExprOrTypeTrait ExprKind) { | ||||||||
| 4421 | ExprResult PE = CheckPlaceholderExpr(E); | ||||||||
| 4422 | if (PE.isInvalid()) | ||||||||
| 4423 | return ExprError(); | ||||||||
| 4424 | |||||||||
| 4425 | E = PE.get(); | ||||||||
| 4426 | |||||||||
| 4427 | // Verify that the operand is valid. | ||||||||
| 4428 | bool isInvalid = false; | ||||||||
| 4429 | if (E->isTypeDependent()) { | ||||||||
| 4430 | // Delay type-checking for type-dependent expressions. | ||||||||
| 4431 | } else if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||||||
| 4432 | isInvalid = CheckAlignOfExpr(*this, E, ExprKind); | ||||||||
| 4433 | } else if (ExprKind == UETT_VecStep) { | ||||||||
| 4434 | isInvalid = CheckVecStepExpr(E); | ||||||||
| 4435 | } else if (ExprKind == UETT_OpenMPRequiredSimdAlign) { | ||||||||
| 4436 | Diag(E->getExprLoc(), diag::err_openmp_default_simd_align_expr); | ||||||||
| 4437 | isInvalid = true; | ||||||||
| 4438 | } else if (E->refersToBitField()) { // C99 6.5.3.4p1. | ||||||||
| 4439 | Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) << 0; | ||||||||
| 4440 | isInvalid = true; | ||||||||
| 4441 | } else { | ||||||||
| 4442 | isInvalid = CheckUnaryExprOrTypeTraitOperand(E, UETT_SizeOf); | ||||||||
| 4443 | } | ||||||||
| 4444 | |||||||||
| 4445 | if (isInvalid) | ||||||||
| 4446 | return ExprError(); | ||||||||
| 4447 | |||||||||
| 4448 | if (ExprKind == UETT_SizeOf && E->getType()->isVariableArrayType()) { | ||||||||
| 4449 | PE = TransformToPotentiallyEvaluated(E); | ||||||||
| 4450 | if (PE.isInvalid()) return ExprError(); | ||||||||
| 4451 | E = PE.get(); | ||||||||
| 4452 | } | ||||||||
| 4453 | |||||||||
| 4454 | // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. | ||||||||
| 4455 | return new (Context) UnaryExprOrTypeTraitExpr( | ||||||||
| 4456 | ExprKind, E, Context.getSizeType(), OpLoc, E->getSourceRange().getEnd()); | ||||||||
| 4457 | } | ||||||||
| 4458 | |||||||||
| 4459 | /// ActOnUnaryExprOrTypeTraitExpr - Handle @c sizeof(type) and @c sizeof @c | ||||||||
| 4460 | /// expr and the same for @c alignof and @c __alignof | ||||||||
| 4461 | /// Note that the ArgRange is invalid if isType is false. | ||||||||
| 4462 | ExprResult | ||||||||
| 4463 | Sema::ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, | ||||||||
| 4464 | UnaryExprOrTypeTrait ExprKind, bool IsType, | ||||||||
| 4465 | void *TyOrEx, SourceRange ArgRange) { | ||||||||
| 4466 | // If error parsing type, ignore. | ||||||||
| 4467 | if (!TyOrEx) return ExprError(); | ||||||||
| 4468 | |||||||||
| 4469 | if (IsType) { | ||||||||
| 4470 | TypeSourceInfo *TInfo; | ||||||||
| 4471 | (void) GetTypeFromParser(ParsedType::getFromOpaquePtr(TyOrEx), &TInfo); | ||||||||
| 4472 | return CreateUnaryExprOrTypeTraitExpr(TInfo, OpLoc, ExprKind, ArgRange); | ||||||||
| 4473 | } | ||||||||
| 4474 | |||||||||
| 4475 | Expr *ArgEx = (Expr *)TyOrEx; | ||||||||
| 4476 | ExprResult Result = CreateUnaryExprOrTypeTraitExpr(ArgEx, OpLoc, ExprKind); | ||||||||
| 4477 | return Result; | ||||||||
| 4478 | } | ||||||||
| 4479 | |||||||||
| 4480 | static QualType CheckRealImagOperand(Sema &S, ExprResult &V, SourceLocation Loc, | ||||||||
| 4481 | bool IsReal) { | ||||||||
| 4482 | if (V.get()->isTypeDependent()) | ||||||||
| 4483 | return S.Context.DependentTy; | ||||||||
| 4484 | |||||||||
| 4485 | // _Real and _Imag are only l-values for normal l-values. | ||||||||
| 4486 | if (V.get()->getObjectKind() != OK_Ordinary) { | ||||||||
| 4487 | V = S.DefaultLvalueConversion(V.get()); | ||||||||
| 4488 | if (V.isInvalid()) | ||||||||
| 4489 | return QualType(); | ||||||||
| 4490 | } | ||||||||
| 4491 | |||||||||
| 4492 | // These operators return the element type of a complex type. | ||||||||
| 4493 | if (const ComplexType *CT = V.get()->getType()->getAs<ComplexType>()) | ||||||||
| 4494 | return CT->getElementType(); | ||||||||
| 4495 | |||||||||
| 4496 | // Otherwise they pass through real integer and floating point types here. | ||||||||
| 4497 | if (V.get()->getType()->isArithmeticType()) | ||||||||
| 4498 | return V.get()->getType(); | ||||||||
| 4499 | |||||||||
| 4500 | // Test for placeholders. | ||||||||
| 4501 | ExprResult PR = S.CheckPlaceholderExpr(V.get()); | ||||||||
| 4502 | if (PR.isInvalid()) return QualType(); | ||||||||
| 4503 | if (PR.get() != V.get()) { | ||||||||
| 4504 | V = PR; | ||||||||
| 4505 | return CheckRealImagOperand(S, V, Loc, IsReal); | ||||||||
| 4506 | } | ||||||||
| 4507 | |||||||||
| 4508 | // Reject anything else. | ||||||||
| 4509 | S.Diag(Loc, diag::err_realimag_invalid_type) << V.get()->getType() | ||||||||
| 4510 | << (IsReal ? "__real" : "__imag"); | ||||||||
| 4511 | return QualType(); | ||||||||
| 4512 | } | ||||||||
| 4513 | |||||||||
| 4514 | |||||||||
| 4515 | |||||||||
| 4516 | ExprResult | ||||||||
| 4517 | Sema::ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, | ||||||||
| 4518 | tok::TokenKind Kind, Expr *Input) { | ||||||||
| 4519 | UnaryOperatorKind Opc; | ||||||||
| 4520 | switch (Kind) { | ||||||||
| 4521 | default: llvm_unreachable("Unknown unary op!")::llvm::llvm_unreachable_internal("Unknown unary op!", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4521); | ||||||||
| 4522 | case tok::plusplus: Opc = UO_PostInc; break; | ||||||||
| 4523 | case tok::minusminus: Opc = UO_PostDec; break; | ||||||||
| 4524 | } | ||||||||
| 4525 | |||||||||
| 4526 | // Since this might is a postfix expression, get rid of ParenListExprs. | ||||||||
| 4527 | ExprResult Result = MaybeConvertParenListExprToParenExpr(S, Input); | ||||||||
| 4528 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 4529 | Input = Result.get(); | ||||||||
| 4530 | |||||||||
| 4531 | return BuildUnaryOp(S, OpLoc, Opc, Input); | ||||||||
| 4532 | } | ||||||||
| 4533 | |||||||||
| 4534 | /// Diagnose if arithmetic on the given ObjC pointer is illegal. | ||||||||
| 4535 | /// | ||||||||
| 4536 | /// \return true on error | ||||||||
| 4537 | static bool checkArithmeticOnObjCPointer(Sema &S, | ||||||||
| 4538 | SourceLocation opLoc, | ||||||||
| 4539 | Expr *op) { | ||||||||
| 4540 | assert(op->getType()->isObjCObjectPointerType())((op->getType()->isObjCObjectPointerType()) ? static_cast <void> (0) : __assert_fail ("op->getType()->isObjCObjectPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4540, __PRETTY_FUNCTION__)); | ||||||||
| 4541 | if (S.LangOpts.ObjCRuntime.allowsPointerArithmetic() && | ||||||||
| 4542 | !S.LangOpts.ObjCSubscriptingLegacyRuntime) | ||||||||
| 4543 | return false; | ||||||||
| 4544 | |||||||||
| 4545 | S.Diag(opLoc, diag::err_arithmetic_nonfragile_interface) | ||||||||
| 4546 | << op->getType()->castAs<ObjCObjectPointerType>()->getPointeeType() | ||||||||
| 4547 | << op->getSourceRange(); | ||||||||
| 4548 | return true; | ||||||||
| 4549 | } | ||||||||
| 4550 | |||||||||
| 4551 | static bool isMSPropertySubscriptExpr(Sema &S, Expr *Base) { | ||||||||
| 4552 | auto *BaseNoParens = Base->IgnoreParens(); | ||||||||
| 4553 | if (auto *MSProp = dyn_cast<MSPropertyRefExpr>(BaseNoParens)) | ||||||||
| 4554 | return MSProp->getPropertyDecl()->getType()->isArrayType(); | ||||||||
| 4555 | return isa<MSPropertySubscriptExpr>(BaseNoParens); | ||||||||
| 4556 | } | ||||||||
| 4557 | |||||||||
| 4558 | ExprResult | ||||||||
| 4559 | Sema::ActOnArraySubscriptExpr(Scope *S, Expr *base, SourceLocation lbLoc, | ||||||||
| 4560 | Expr *idx, SourceLocation rbLoc) { | ||||||||
| 4561 | if (base && !base->getType().isNull() && | ||||||||
| 4562 | base->getType()->isSpecificPlaceholderType(BuiltinType::OMPArraySection)) | ||||||||
| 4563 | return ActOnOMPArraySectionExpr(base, lbLoc, idx, SourceLocation(), | ||||||||
| 4564 | SourceLocation(), /*Length*/ nullptr, | ||||||||
| 4565 | /*Stride=*/nullptr, rbLoc); | ||||||||
| 4566 | |||||||||
| 4567 | // Since this might be a postfix expression, get rid of ParenListExprs. | ||||||||
| 4568 | if (isa<ParenListExpr>(base)) { | ||||||||
| 4569 | ExprResult result = MaybeConvertParenListExprToParenExpr(S, base); | ||||||||
| 4570 | if (result.isInvalid()) return ExprError(); | ||||||||
| 4571 | base = result.get(); | ||||||||
| 4572 | } | ||||||||
| 4573 | |||||||||
| 4574 | // Check if base and idx form a MatrixSubscriptExpr. | ||||||||
| 4575 | // | ||||||||
| 4576 | // Helper to check for comma expressions, which are not allowed as indices for | ||||||||
| 4577 | // matrix subscript expressions. | ||||||||
| 4578 | auto CheckAndReportCommaError = [this, base, rbLoc](Expr *E) { | ||||||||
| 4579 | if (isa<BinaryOperator>(E) && cast<BinaryOperator>(E)->isCommaOp()) { | ||||||||
| 4580 | Diag(E->getExprLoc(), diag::err_matrix_subscript_comma) | ||||||||
| 4581 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||||||
| 4582 | return true; | ||||||||
| 4583 | } | ||||||||
| 4584 | return false; | ||||||||
| 4585 | }; | ||||||||
| 4586 | // The matrix subscript operator ([][])is considered a single operator. | ||||||||
| 4587 | // Separating the index expressions by parenthesis is not allowed. | ||||||||
| 4588 | if (base->getType()->isSpecificPlaceholderType( | ||||||||
| 4589 | BuiltinType::IncompleteMatrixIdx) && | ||||||||
| 4590 | !isa<MatrixSubscriptExpr>(base)) { | ||||||||
| 4591 | Diag(base->getExprLoc(), diag::err_matrix_separate_incomplete_index) | ||||||||
| 4592 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||||||
| 4593 | return ExprError(); | ||||||||
| 4594 | } | ||||||||
| 4595 | // If the base is either a MatrixSubscriptExpr or a matrix type, try to create | ||||||||
| 4596 | // a new MatrixSubscriptExpr. | ||||||||
| 4597 | auto *matSubscriptE = dyn_cast<MatrixSubscriptExpr>(base); | ||||||||
| 4598 | if (matSubscriptE) { | ||||||||
| 4599 | if (CheckAndReportCommaError(idx)) | ||||||||
| 4600 | return ExprError(); | ||||||||
| 4601 | |||||||||
| 4602 | assert(matSubscriptE->isIncomplete() &&((matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript" ) ? static_cast<void> (0) : __assert_fail ("matSubscriptE->isIncomplete() && \"base has to be an incomplete matrix subscript\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4603, __PRETTY_FUNCTION__)) | ||||||||
| 4603 | "base has to be an incomplete matrix subscript")((matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript" ) ? static_cast<void> (0) : __assert_fail ("matSubscriptE->isIncomplete() && \"base has to be an incomplete matrix subscript\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4603, __PRETTY_FUNCTION__)); | ||||||||
| 4604 | return CreateBuiltinMatrixSubscriptExpr( | ||||||||
| 4605 | matSubscriptE->getBase(), matSubscriptE->getRowIdx(), idx, rbLoc); | ||||||||
| 4606 | } | ||||||||
| 4607 | Expr *matrixBase = base; | ||||||||
| 4608 | bool IsMSPropertySubscript = isMSPropertySubscriptExpr(*this, base); | ||||||||
| 4609 | if (!IsMSPropertySubscript) { | ||||||||
| 4610 | ExprResult result = CheckPlaceholderExpr(base); | ||||||||
| 4611 | if (!result.isInvalid()) | ||||||||
| 4612 | matrixBase = result.get(); | ||||||||
| 4613 | } | ||||||||
| 4614 | if (matrixBase->getType()->isMatrixType()) { | ||||||||
| 4615 | if (CheckAndReportCommaError(idx)) | ||||||||
| 4616 | return ExprError(); | ||||||||
| 4617 | |||||||||
| 4618 | return CreateBuiltinMatrixSubscriptExpr(matrixBase, idx, nullptr, rbLoc); | ||||||||
| 4619 | } | ||||||||
| 4620 | |||||||||
| 4621 | // A comma-expression as the index is deprecated in C++2a onwards. | ||||||||
| 4622 | if (getLangOpts().CPlusPlus20 && | ||||||||
| 4623 | ((isa<BinaryOperator>(idx) && cast<BinaryOperator>(idx)->isCommaOp()) || | ||||||||
| 4624 | (isa<CXXOperatorCallExpr>(idx) && | ||||||||
| 4625 | cast<CXXOperatorCallExpr>(idx)->getOperator() == OO_Comma))) { | ||||||||
| 4626 | Diag(idx->getExprLoc(), diag::warn_deprecated_comma_subscript) | ||||||||
| 4627 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||||||
| 4628 | } | ||||||||
| 4629 | |||||||||
| 4630 | // Handle any non-overload placeholder types in the base and index | ||||||||
| 4631 | // expressions. We can't handle overloads here because the other | ||||||||
| 4632 | // operand might be an overloadable type, in which case the overload | ||||||||
| 4633 | // resolution for the operator overload should get the first crack | ||||||||
| 4634 | // at the overload. | ||||||||
| 4635 | if (base->getType()->isNonOverloadPlaceholderType()) { | ||||||||
| 4636 | IsMSPropertySubscript = isMSPropertySubscriptExpr(*this, base); | ||||||||
| 4637 | if (!IsMSPropertySubscript) { | ||||||||
| 4638 | ExprResult result = CheckPlaceholderExpr(base); | ||||||||
| 4639 | if (result.isInvalid()) | ||||||||
| 4640 | return ExprError(); | ||||||||
| 4641 | base = result.get(); | ||||||||
| 4642 | } | ||||||||
| 4643 | } | ||||||||
| 4644 | if (idx->getType()->isNonOverloadPlaceholderType()) { | ||||||||
| 4645 | ExprResult result = CheckPlaceholderExpr(idx); | ||||||||
| 4646 | if (result.isInvalid()) return ExprError(); | ||||||||
| 4647 | idx = result.get(); | ||||||||
| 4648 | } | ||||||||
| 4649 | |||||||||
| 4650 | // Build an unanalyzed expression if either operand is type-dependent. | ||||||||
| 4651 | if (getLangOpts().CPlusPlus && | ||||||||
| 4652 | (base->isTypeDependent() || idx->isTypeDependent())) { | ||||||||
| 4653 | return new (Context) ArraySubscriptExpr(base, idx, Context.DependentTy, | ||||||||
| 4654 | VK_LValue, OK_Ordinary, rbLoc); | ||||||||
| 4655 | } | ||||||||
| 4656 | |||||||||
| 4657 | // MSDN, property (C++) | ||||||||
| 4658 | // https://msdn.microsoft.com/en-us/library/yhfk0thd(v=vs.120).aspx | ||||||||
| 4659 | // This attribute can also be used in the declaration of an empty array in a | ||||||||
| 4660 | // class or structure definition. For example: | ||||||||
| 4661 | // __declspec(property(get=GetX, put=PutX)) int x[]; | ||||||||
| 4662 | // The above statement indicates that x[] can be used with one or more array | ||||||||
| 4663 | // indices. In this case, i=p->x[a][b] will be turned into i=p->GetX(a, b), | ||||||||
| 4664 | // and p->x[a][b] = i will be turned into p->PutX(a, b, i); | ||||||||
| 4665 | if (IsMSPropertySubscript) { | ||||||||
| 4666 | // Build MS property subscript expression if base is MS property reference | ||||||||
| 4667 | // or MS property subscript. | ||||||||
| 4668 | return new (Context) MSPropertySubscriptExpr( | ||||||||
| 4669 | base, idx, Context.PseudoObjectTy, VK_LValue, OK_Ordinary, rbLoc); | ||||||||
| 4670 | } | ||||||||
| 4671 | |||||||||
| 4672 | // Use C++ overloaded-operator rules if either operand has record | ||||||||
| 4673 | // type. The spec says to do this if either type is *overloadable*, | ||||||||
| 4674 | // but enum types can't declare subscript operators or conversion | ||||||||
| 4675 | // operators, so there's nothing interesting for overload resolution | ||||||||
| 4676 | // to do if there aren't any record types involved. | ||||||||
| 4677 | // | ||||||||
| 4678 | // ObjC pointers have their own subscripting logic that is not tied | ||||||||
| 4679 | // to overload resolution and so should not take this path. | ||||||||
| 4680 | if (getLangOpts().CPlusPlus && | ||||||||
| 4681 | (base->getType()->isRecordType() || | ||||||||
| 4682 | (!base->getType()->isObjCObjectPointerType() && | ||||||||
| 4683 | idx->getType()->isRecordType()))) { | ||||||||
| 4684 | return CreateOverloadedArraySubscriptExpr(lbLoc, rbLoc, base, idx); | ||||||||
| 4685 | } | ||||||||
| 4686 | |||||||||
| 4687 | ExprResult Res = CreateBuiltinArraySubscriptExpr(base, lbLoc, idx, rbLoc); | ||||||||
| 4688 | |||||||||
| 4689 | if (!Res.isInvalid() && isa<ArraySubscriptExpr>(Res.get())) | ||||||||
| 4690 | CheckSubscriptAccessOfNoDeref(cast<ArraySubscriptExpr>(Res.get())); | ||||||||
| 4691 | |||||||||
| 4692 | return Res; | ||||||||
| 4693 | } | ||||||||
| 4694 | |||||||||
| 4695 | ExprResult Sema::tryConvertExprToType(Expr *E, QualType Ty) { | ||||||||
| 4696 | InitializedEntity Entity = InitializedEntity::InitializeTemporary(Ty); | ||||||||
| 4697 | InitializationKind Kind = | ||||||||
| 4698 | InitializationKind::CreateCopy(E->getBeginLoc(), SourceLocation()); | ||||||||
| 4699 | InitializationSequence InitSeq(*this, Entity, Kind, E); | ||||||||
| 4700 | return InitSeq.Perform(*this, Entity, Kind, E); | ||||||||
| 4701 | } | ||||||||
| 4702 | |||||||||
| 4703 | ExprResult Sema::CreateBuiltinMatrixSubscriptExpr(Expr *Base, Expr *RowIdx, | ||||||||
| 4704 | Expr *ColumnIdx, | ||||||||
| 4705 | SourceLocation RBLoc) { | ||||||||
| 4706 | ExprResult BaseR = CheckPlaceholderExpr(Base); | ||||||||
| 4707 | if (BaseR.isInvalid()) | ||||||||
| 4708 | return BaseR; | ||||||||
| 4709 | Base = BaseR.get(); | ||||||||
| 4710 | |||||||||
| 4711 | ExprResult RowR = CheckPlaceholderExpr(RowIdx); | ||||||||
| 4712 | if (RowR.isInvalid()) | ||||||||
| 4713 | return RowR; | ||||||||
| 4714 | RowIdx = RowR.get(); | ||||||||
| 4715 | |||||||||
| 4716 | if (!ColumnIdx) | ||||||||
| 4717 | return new (Context) MatrixSubscriptExpr( | ||||||||
| 4718 | Base, RowIdx, ColumnIdx, Context.IncompleteMatrixIdxTy, RBLoc); | ||||||||
| 4719 | |||||||||
| 4720 | // Build an unanalyzed expression if any of the operands is type-dependent. | ||||||||
| 4721 | if (Base->isTypeDependent() || RowIdx->isTypeDependent() || | ||||||||
| 4722 | ColumnIdx->isTypeDependent()) | ||||||||
| 4723 | return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, | ||||||||
| 4724 | Context.DependentTy, RBLoc); | ||||||||
| 4725 | |||||||||
| 4726 | ExprResult ColumnR = CheckPlaceholderExpr(ColumnIdx); | ||||||||
| 4727 | if (ColumnR.isInvalid()) | ||||||||
| 4728 | return ColumnR; | ||||||||
| 4729 | ColumnIdx = ColumnR.get(); | ||||||||
| 4730 | |||||||||
| 4731 | // Check that IndexExpr is an integer expression. If it is a constant | ||||||||
| 4732 | // expression, check that it is less than Dim (= the number of elements in the | ||||||||
| 4733 | // corresponding dimension). | ||||||||
| 4734 | auto IsIndexValid = [&](Expr *IndexExpr, unsigned Dim, | ||||||||
| 4735 | bool IsColumnIdx) -> Expr * { | ||||||||
| 4736 | if (!IndexExpr->getType()->isIntegerType() && | ||||||||
| 4737 | !IndexExpr->isTypeDependent()) { | ||||||||
| 4738 | Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_not_integer) | ||||||||
| 4739 | << IsColumnIdx; | ||||||||
| 4740 | return nullptr; | ||||||||
| 4741 | } | ||||||||
| 4742 | |||||||||
| 4743 | if (Optional<llvm::APSInt> Idx = | ||||||||
| 4744 | IndexExpr->getIntegerConstantExpr(Context)) { | ||||||||
| 4745 | if ((*Idx < 0 || *Idx >= Dim)) { | ||||||||
| 4746 | Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_outside_range) | ||||||||
| 4747 | << IsColumnIdx << Dim; | ||||||||
| 4748 | return nullptr; | ||||||||
| 4749 | } | ||||||||
| 4750 | } | ||||||||
| 4751 | |||||||||
| 4752 | ExprResult ConvExpr = | ||||||||
| 4753 | tryConvertExprToType(IndexExpr, Context.getSizeType()); | ||||||||
| 4754 | assert(!ConvExpr.isInvalid() &&((!ConvExpr.isInvalid() && "should be able to convert any integer type to size type" ) ? static_cast<void> (0) : __assert_fail ("!ConvExpr.isInvalid() && \"should be able to convert any integer type to size type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4755, __PRETTY_FUNCTION__)) | ||||||||
| 4755 | "should be able to convert any integer type to size type")((!ConvExpr.isInvalid() && "should be able to convert any integer type to size type" ) ? static_cast<void> (0) : __assert_fail ("!ConvExpr.isInvalid() && \"should be able to convert any integer type to size type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 4755, __PRETTY_FUNCTION__)); | ||||||||
| 4756 | return ConvExpr.get(); | ||||||||
| 4757 | }; | ||||||||
| 4758 | |||||||||
| 4759 | auto *MTy = Base->getType()->getAs<ConstantMatrixType>(); | ||||||||
| 4760 | RowIdx = IsIndexValid(RowIdx, MTy->getNumRows(), false); | ||||||||
| 4761 | ColumnIdx = IsIndexValid(ColumnIdx, MTy->getNumColumns(), true); | ||||||||
| 4762 | if (!RowIdx || !ColumnIdx) | ||||||||
| 4763 | return ExprError(); | ||||||||
| 4764 | |||||||||
| 4765 | return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, | ||||||||
| 4766 | MTy->getElementType(), RBLoc); | ||||||||
| 4767 | } | ||||||||
| 4768 | |||||||||
| 4769 | void Sema::CheckAddressOfNoDeref(const Expr *E) { | ||||||||
| 4770 | ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); | ||||||||
| 4771 | const Expr *StrippedExpr = E->IgnoreParenImpCasts(); | ||||||||
| 4772 | |||||||||
| 4773 | // For expressions like `&(*s).b`, the base is recorded and what should be | ||||||||
| 4774 | // checked. | ||||||||
| 4775 | const MemberExpr *Member = nullptr; | ||||||||
| 4776 | while ((Member = dyn_cast<MemberExpr>(StrippedExpr)) && !Member->isArrow()) | ||||||||
| 4777 | StrippedExpr = Member->getBase()->IgnoreParenImpCasts(); | ||||||||
| 4778 | |||||||||
| 4779 | LastRecord.PossibleDerefs.erase(StrippedExpr); | ||||||||
| 4780 | } | ||||||||
| 4781 | |||||||||
| 4782 | void Sema::CheckSubscriptAccessOfNoDeref(const ArraySubscriptExpr *E) { | ||||||||
| 4783 | QualType ResultTy = E->getType(); | ||||||||
| 4784 | ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); | ||||||||
| 4785 | |||||||||
| 4786 | // Bail if the element is an array since it is not memory access. | ||||||||
| 4787 | if (isa<ArrayType>(ResultTy)) | ||||||||
| 4788 | return; | ||||||||
| 4789 | |||||||||
| 4790 | if (ResultTy->hasAttr(attr::NoDeref)) { | ||||||||
| 4791 | LastRecord.PossibleDerefs.insert(E); | ||||||||
| 4792 | return; | ||||||||
| 4793 | } | ||||||||
| 4794 | |||||||||
| 4795 | // Check if the base type is a pointer to a member access of a struct | ||||||||
| 4796 | // marked with noderef. | ||||||||
| 4797 | const Expr *Base = E->getBase(); | ||||||||
| 4798 | QualType BaseTy = Base->getType(); | ||||||||
| 4799 | if (!(isa<ArrayType>(BaseTy) || isa<PointerType>(BaseTy))) | ||||||||
| 4800 | // Not a pointer access | ||||||||
| 4801 | return; | ||||||||
| 4802 | |||||||||
| 4803 | const MemberExpr *Member = nullptr; | ||||||||
| 4804 | while ((Member = dyn_cast<MemberExpr>(Base->IgnoreParenCasts())) && | ||||||||
| 4805 | Member->isArrow()) | ||||||||
| 4806 | Base = Member->getBase(); | ||||||||
| 4807 | |||||||||
| 4808 | if (const auto *Ptr = dyn_cast<PointerType>(Base->getType())) { | ||||||||
| 4809 | if (Ptr->getPointeeType()->hasAttr(attr::NoDeref)) | ||||||||
| 4810 | LastRecord.PossibleDerefs.insert(E); | ||||||||
| 4811 | } | ||||||||
| 4812 | } | ||||||||
| 4813 | |||||||||
| 4814 | ExprResult Sema::ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, | ||||||||
| 4815 | Expr *LowerBound, | ||||||||
| 4816 | SourceLocation ColonLocFirst, | ||||||||
| 4817 | SourceLocation ColonLocSecond, | ||||||||
| 4818 | Expr *Length, Expr *Stride, | ||||||||
| 4819 | SourceLocation RBLoc) { | ||||||||
| 4820 | if (Base->getType()->isPlaceholderType() && | ||||||||
| 4821 | !Base->getType()->isSpecificPlaceholderType( | ||||||||
| 4822 | BuiltinType::OMPArraySection)) { | ||||||||
| 4823 | ExprResult Result = CheckPlaceholderExpr(Base); | ||||||||
| 4824 | if (Result.isInvalid()) | ||||||||
| 4825 | return ExprError(); | ||||||||
| 4826 | Base = Result.get(); | ||||||||
| 4827 | } | ||||||||
| 4828 | if (LowerBound && LowerBound->getType()->isNonOverloadPlaceholderType()) { | ||||||||
| 4829 | ExprResult Result = CheckPlaceholderExpr(LowerBound); | ||||||||
| 4830 | if (Result.isInvalid()) | ||||||||
| 4831 | return ExprError(); | ||||||||
| 4832 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
| 4833 | if (Result.isInvalid()) | ||||||||
| 4834 | return ExprError(); | ||||||||
| 4835 | LowerBound = Result.get(); | ||||||||
| 4836 | } | ||||||||
| 4837 | if (Length && Length->getType()->isNonOverloadPlaceholderType()) { | ||||||||
| 4838 | ExprResult Result = CheckPlaceholderExpr(Length); | ||||||||
| 4839 | if (Result.isInvalid()) | ||||||||
| 4840 | return ExprError(); | ||||||||
| 4841 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
| 4842 | if (Result.isInvalid()) | ||||||||
| 4843 | return ExprError(); | ||||||||
| 4844 | Length = Result.get(); | ||||||||
| 4845 | } | ||||||||
| 4846 | if (Stride && Stride->getType()->isNonOverloadPlaceholderType()) { | ||||||||
| 4847 | ExprResult Result = CheckPlaceholderExpr(Stride); | ||||||||
| 4848 | if (Result.isInvalid()) | ||||||||
| 4849 | return ExprError(); | ||||||||
| 4850 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
| 4851 | if (Result.isInvalid()) | ||||||||
| 4852 | return ExprError(); | ||||||||
| 4853 | Stride = Result.get(); | ||||||||
| 4854 | } | ||||||||
| 4855 | |||||||||
| 4856 | // Build an unanalyzed expression if either operand is type-dependent. | ||||||||
| 4857 | if (Base->isTypeDependent() || | ||||||||
| 4858 | (LowerBound && | ||||||||
| 4859 | (LowerBound->isTypeDependent() || LowerBound->isValueDependent())) || | ||||||||
| 4860 | (Length && (Length->isTypeDependent() || Length->isValueDependent())) || | ||||||||
| 4861 | (Stride && (Stride->isTypeDependent() || Stride->isValueDependent()))) { | ||||||||
| 4862 | return new (Context) OMPArraySectionExpr( | ||||||||
| 4863 | Base, LowerBound, Length, Stride, Context.DependentTy, VK_LValue, | ||||||||
| 4864 | OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); | ||||||||
| 4865 | } | ||||||||
| 4866 | |||||||||
| 4867 | // Perform default conversions. | ||||||||
| 4868 | QualType OriginalTy = OMPArraySectionExpr::getBaseOriginalType(Base); | ||||||||
| 4869 | QualType ResultTy; | ||||||||
| 4870 | if (OriginalTy->isAnyPointerType()) { | ||||||||
| 4871 | ResultTy = OriginalTy->getPointeeType(); | ||||||||
| 4872 | } else if (OriginalTy->isArrayType()) { | ||||||||
| 4873 | ResultTy = OriginalTy->getAsArrayTypeUnsafe()->getElementType(); | ||||||||
| 4874 | } else { | ||||||||
| 4875 | return ExprError( | ||||||||
| 4876 | Diag(Base->getExprLoc(), diag::err_omp_typecheck_section_value) | ||||||||
| 4877 | << Base->getSourceRange()); | ||||||||
| 4878 | } | ||||||||
| 4879 | // C99 6.5.2.1p1 | ||||||||
| 4880 | if (LowerBound) { | ||||||||
| 4881 | auto Res = PerformOpenMPImplicitIntegerConversion(LowerBound->getExprLoc(), | ||||||||
| 4882 | LowerBound); | ||||||||
| 4883 | if (Res.isInvalid()) | ||||||||
| 4884 | return ExprError(Diag(LowerBound->getExprLoc(), | ||||||||
| 4885 | diag::err_omp_typecheck_section_not_integer) | ||||||||
| 4886 | << 0 << LowerBound->getSourceRange()); | ||||||||
| 4887 | LowerBound = Res.get(); | ||||||||
| 4888 | |||||||||
| 4889 | if (LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
| 4890 | LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
| 4891 | Diag(LowerBound->getExprLoc(), diag::warn_omp_section_is_char) | ||||||||
| 4892 | << 0 << LowerBound->getSourceRange(); | ||||||||
| 4893 | } | ||||||||
| 4894 | if (Length) { | ||||||||
| 4895 | auto Res = | ||||||||
| 4896 | PerformOpenMPImplicitIntegerConversion(Length->getExprLoc(), Length); | ||||||||
| 4897 | if (Res.isInvalid()) | ||||||||
| 4898 | return ExprError(Diag(Length->getExprLoc(), | ||||||||
| 4899 | diag::err_omp_typecheck_section_not_integer) | ||||||||
| 4900 | << 1 << Length->getSourceRange()); | ||||||||
| 4901 | Length = Res.get(); | ||||||||
| 4902 | |||||||||
| 4903 | if (Length->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
| 4904 | Length->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
| 4905 | Diag(Length->getExprLoc(), diag::warn_omp_section_is_char) | ||||||||
| 4906 | << 1 << Length->getSourceRange(); | ||||||||
| 4907 | } | ||||||||
| 4908 | if (Stride) { | ||||||||
| 4909 | ExprResult Res = | ||||||||
| 4910 | PerformOpenMPImplicitIntegerConversion(Stride->getExprLoc(), Stride); | ||||||||
| 4911 | if (Res.isInvalid()) | ||||||||
| 4912 | return ExprError(Diag(Stride->getExprLoc(), | ||||||||
| 4913 | diag::err_omp_typecheck_section_not_integer) | ||||||||
| 4914 | << 1 << Stride->getSourceRange()); | ||||||||
| 4915 | Stride = Res.get(); | ||||||||
| 4916 | |||||||||
| 4917 | if (Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
| 4918 | Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
| 4919 | Diag(Stride->getExprLoc(), diag::warn_omp_section_is_char) | ||||||||
| 4920 | << 1 << Stride->getSourceRange(); | ||||||||
| 4921 | } | ||||||||
| 4922 | |||||||||
| 4923 | // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, | ||||||||
| 4924 | // C++ [expr.sub]p1: The type "T" shall be a completely-defined object | ||||||||
| 4925 | // type. Note that functions are not objects, and that (in C99 parlance) | ||||||||
| 4926 | // incomplete types are not object types. | ||||||||
| 4927 | if (ResultTy->isFunctionType()) { | ||||||||
| 4928 | Diag(Base->getExprLoc(), diag::err_omp_section_function_type) | ||||||||
| 4929 | << ResultTy << Base->getSourceRange(); | ||||||||
| 4930 | return ExprError(); | ||||||||
| 4931 | } | ||||||||
| 4932 | |||||||||
| 4933 | if (RequireCompleteType(Base->getExprLoc(), ResultTy, | ||||||||
| 4934 | diag::err_omp_section_incomplete_type, Base)) | ||||||||
| 4935 | return ExprError(); | ||||||||
| 4936 | |||||||||
| 4937 | if (LowerBound && !OriginalTy->isAnyPointerType()) { | ||||||||
| 4938 | Expr::EvalResult Result; | ||||||||
| 4939 | if (LowerBound->EvaluateAsInt(Result, Context)) { | ||||||||
| 4940 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
| 4941 | // The array section must be a subset of the original array. | ||||||||
| 4942 | llvm::APSInt LowerBoundValue = Result.Val.getInt(); | ||||||||
| 4943 | if (LowerBoundValue.isNegative()) { | ||||||||
| 4944 | Diag(LowerBound->getExprLoc(), diag::err_omp_section_not_subset_of_array) | ||||||||
| 4945 | << LowerBound->getSourceRange(); | ||||||||
| 4946 | return ExprError(); | ||||||||
| 4947 | } | ||||||||
| 4948 | } | ||||||||
| 4949 | } | ||||||||
| 4950 | |||||||||
| 4951 | if (Length) { | ||||||||
| 4952 | Expr::EvalResult Result; | ||||||||
| 4953 | if (Length->EvaluateAsInt(Result, Context)) { | ||||||||
| 4954 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
| 4955 | // The length must evaluate to non-negative integers. | ||||||||
| 4956 | llvm::APSInt LengthValue = Result.Val.getInt(); | ||||||||
| 4957 | if (LengthValue.isNegative()) { | ||||||||
| 4958 | Diag(Length->getExprLoc(), diag::err_omp_section_length_negative) | ||||||||
| 4959 | << LengthValue.toString(/*Radix=*/10, /*Signed=*/true) | ||||||||
| 4960 | << Length->getSourceRange(); | ||||||||
| 4961 | return ExprError(); | ||||||||
| 4962 | } | ||||||||
| 4963 | } | ||||||||
| 4964 | } else if (ColonLocFirst.isValid() && | ||||||||
| 4965 | (OriginalTy.isNull() || (!OriginalTy->isConstantArrayType() && | ||||||||
| 4966 | !OriginalTy->isVariableArrayType()))) { | ||||||||
| 4967 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
| 4968 | // When the size of the array dimension is not known, the length must be | ||||||||
| 4969 | // specified explicitly. | ||||||||
| 4970 | Diag(ColonLocFirst, diag::err_omp_section_length_undefined) | ||||||||
| 4971 | << (!OriginalTy.isNull() && OriginalTy->isArrayType()); | ||||||||
| 4972 | return ExprError(); | ||||||||
| 4973 | } | ||||||||
| 4974 | |||||||||
| 4975 | if (Stride) { | ||||||||
| 4976 | Expr::EvalResult Result; | ||||||||
| 4977 | if (Stride->EvaluateAsInt(Result, Context)) { | ||||||||
| 4978 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||||||
| 4979 | // The stride must evaluate to a positive integer. | ||||||||
| 4980 | llvm::APSInt StrideValue = Result.Val.getInt(); | ||||||||
| 4981 | if (!StrideValue.isStrictlyPositive()) { | ||||||||
| 4982 | Diag(Stride->getExprLoc(), diag::err_omp_section_stride_non_positive) | ||||||||
| 4983 | << StrideValue.toString(/*Radix=*/10, /*Signed=*/true) | ||||||||
| 4984 | << Stride->getSourceRange(); | ||||||||
| 4985 | return ExprError(); | ||||||||
| 4986 | } | ||||||||
| 4987 | } | ||||||||
| 4988 | } | ||||||||
| 4989 | |||||||||
| 4990 | if (!Base->getType()->isSpecificPlaceholderType( | ||||||||
| 4991 | BuiltinType::OMPArraySection)) { | ||||||||
| 4992 | ExprResult Result = DefaultFunctionArrayLvalueConversion(Base); | ||||||||
| 4993 | if (Result.isInvalid()) | ||||||||
| 4994 | return ExprError(); | ||||||||
| 4995 | Base = Result.get(); | ||||||||
| 4996 | } | ||||||||
| 4997 | return new (Context) OMPArraySectionExpr( | ||||||||
| 4998 | Base, LowerBound, Length, Stride, Context.OMPArraySectionTy, VK_LValue, | ||||||||
| 4999 | OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); | ||||||||
| 5000 | } | ||||||||
| 5001 | |||||||||
| 5002 | ExprResult Sema::ActOnOMPArrayShapingExpr(Expr *Base, SourceLocation LParenLoc, | ||||||||
| 5003 | SourceLocation RParenLoc, | ||||||||
| 5004 | ArrayRef<Expr *> Dims, | ||||||||
| 5005 | ArrayRef<SourceRange> Brackets) { | ||||||||
| 5006 | if (Base->getType()->isPlaceholderType()) { | ||||||||
| 5007 | ExprResult Result = CheckPlaceholderExpr(Base); | ||||||||
| 5008 | if (Result.isInvalid()) | ||||||||
| 5009 | return ExprError(); | ||||||||
| 5010 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
| 5011 | if (Result.isInvalid()) | ||||||||
| 5012 | return ExprError(); | ||||||||
| 5013 | Base = Result.get(); | ||||||||
| 5014 | } | ||||||||
| 5015 | QualType BaseTy = Base->getType(); | ||||||||
| 5016 | // Delay analysis of the types/expressions if instantiation/specialization is | ||||||||
| 5017 | // required. | ||||||||
| 5018 | if (!BaseTy->isPointerType() && Base->isTypeDependent()) | ||||||||
| 5019 | return OMPArrayShapingExpr::Create(Context, Context.DependentTy, Base, | ||||||||
| 5020 | LParenLoc, RParenLoc, Dims, Brackets); | ||||||||
| 5021 | if (!BaseTy->isPointerType() || | ||||||||
| 5022 | (!Base->isTypeDependent() && | ||||||||
| 5023 | BaseTy->getPointeeType()->isIncompleteType())) | ||||||||
| 5024 | return ExprError(Diag(Base->getExprLoc(), | ||||||||
| 5025 | diag::err_omp_non_pointer_type_array_shaping_base) | ||||||||
| 5026 | << Base->getSourceRange()); | ||||||||
| 5027 | |||||||||
| 5028 | SmallVector<Expr *, 4> NewDims; | ||||||||
| 5029 | bool ErrorFound = false; | ||||||||
| 5030 | for (Expr *Dim : Dims) { | ||||||||
| 5031 | if (Dim->getType()->isPlaceholderType()) { | ||||||||
| 5032 | ExprResult Result = CheckPlaceholderExpr(Dim); | ||||||||
| 5033 | if (Result.isInvalid()) { | ||||||||
| 5034 | ErrorFound = true; | ||||||||
| 5035 | continue; | ||||||||
| 5036 | } | ||||||||
| 5037 | Result = DefaultLvalueConversion(Result.get()); | ||||||||
| 5038 | if (Result.isInvalid()) { | ||||||||
| 5039 | ErrorFound = true; | ||||||||
| 5040 | continue; | ||||||||
| 5041 | } | ||||||||
| 5042 | Dim = Result.get(); | ||||||||
| 5043 | } | ||||||||
| 5044 | if (!Dim->isTypeDependent()) { | ||||||||
| 5045 | ExprResult Result = | ||||||||
| 5046 | PerformOpenMPImplicitIntegerConversion(Dim->getExprLoc(), Dim); | ||||||||
| 5047 | if (Result.isInvalid()) { | ||||||||
| 5048 | ErrorFound = true; | ||||||||
| 5049 | Diag(Dim->getExprLoc(), diag::err_omp_typecheck_shaping_not_integer) | ||||||||
| 5050 | << Dim->getSourceRange(); | ||||||||
| 5051 | continue; | ||||||||
| 5052 | } | ||||||||
| 5053 | Dim = Result.get(); | ||||||||
| 5054 | Expr::EvalResult EvResult; | ||||||||
| 5055 | if (!Dim->isValueDependent() && Dim->EvaluateAsInt(EvResult, Context)) { | ||||||||
| 5056 | // OpenMP 5.0, [2.1.4 Array Shaping] | ||||||||
| 5057 | // Each si is an integral type expression that must evaluate to a | ||||||||
| 5058 | // positive integer. | ||||||||
| 5059 | llvm::APSInt Value = EvResult.Val.getInt(); | ||||||||
| 5060 | if (!Value.isStrictlyPositive()) { | ||||||||
| 5061 | Diag(Dim->getExprLoc(), diag::err_omp_shaping_dimension_not_positive) | ||||||||
| 5062 | << Value.toString(/*Radix=*/10, /*Signed=*/true) | ||||||||
| 5063 | << Dim->getSourceRange(); | ||||||||
| 5064 | ErrorFound = true; | ||||||||
| 5065 | continue; | ||||||||
| 5066 | } | ||||||||
| 5067 | } | ||||||||
| 5068 | } | ||||||||
| 5069 | NewDims.push_back(Dim); | ||||||||
| 5070 | } | ||||||||
| 5071 | if (ErrorFound) | ||||||||
| 5072 | return ExprError(); | ||||||||
| 5073 | return OMPArrayShapingExpr::Create(Context, Context.OMPArrayShapingTy, Base, | ||||||||
| 5074 | LParenLoc, RParenLoc, NewDims, Brackets); | ||||||||
| 5075 | } | ||||||||
| 5076 | |||||||||
| 5077 | ExprResult Sema::ActOnOMPIteratorExpr(Scope *S, SourceLocation IteratorKwLoc, | ||||||||
| 5078 | SourceLocation LLoc, SourceLocation RLoc, | ||||||||
| 5079 | ArrayRef<OMPIteratorData> Data) { | ||||||||
| 5080 | SmallVector<OMPIteratorExpr::IteratorDefinition, 4> ID; | ||||||||
| 5081 | bool IsCorrect = true; | ||||||||
| 5082 | for (const OMPIteratorData &D : Data) { | ||||||||
| 5083 | TypeSourceInfo *TInfo = nullptr; | ||||||||
| 5084 | SourceLocation StartLoc; | ||||||||
| 5085 | QualType DeclTy; | ||||||||
| 5086 | if (!D.Type.getAsOpaquePtr()) { | ||||||||
| 5087 | // OpenMP 5.0, 2.1.6 Iterators | ||||||||
| 5088 | // In an iterator-specifier, if the iterator-type is not specified then | ||||||||
| 5089 | // the type of that iterator is of int type. | ||||||||
| 5090 | DeclTy = Context.IntTy; | ||||||||
| 5091 | StartLoc = D.DeclIdentLoc; | ||||||||
| 5092 | } else { | ||||||||
| 5093 | DeclTy = GetTypeFromParser(D.Type, &TInfo); | ||||||||
| 5094 | StartLoc = TInfo->getTypeLoc().getBeginLoc(); | ||||||||
| 5095 | } | ||||||||
| 5096 | |||||||||
| 5097 | bool IsDeclTyDependent = DeclTy->isDependentType() || | ||||||||
| 5098 | DeclTy->containsUnexpandedParameterPack() || | ||||||||
| 5099 | DeclTy->isInstantiationDependentType(); | ||||||||
| 5100 | if (!IsDeclTyDependent) { | ||||||||
| 5101 | if (!DeclTy->isIntegralType(Context) && !DeclTy->isAnyPointerType()) { | ||||||||
| 5102 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ | ||||||||
| 5103 | // The iterator-type must be an integral or pointer type. | ||||||||
| 5104 | Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) | ||||||||
| 5105 | << DeclTy; | ||||||||
| 5106 | IsCorrect = false; | ||||||||
| 5107 | continue; | ||||||||
| 5108 | } | ||||||||
| 5109 | if (DeclTy.isConstant(Context)) { | ||||||||
| 5110 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ | ||||||||
| 5111 | // The iterator-type must not be const qualified. | ||||||||
| 5112 | Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) | ||||||||
| 5113 | << DeclTy; | ||||||||
| 5114 | IsCorrect = false; | ||||||||
| 5115 | continue; | ||||||||
| 5116 | } | ||||||||
| 5117 | } | ||||||||
| 5118 | |||||||||
| 5119 | // Iterator declaration. | ||||||||
| 5120 | assert(D.DeclIdent && "Identifier expected.")((D.DeclIdent && "Identifier expected.") ? static_cast <void> (0) : __assert_fail ("D.DeclIdent && \"Identifier expected.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5120, __PRETTY_FUNCTION__)); | ||||||||
| 5121 | // Always try to create iterator declarator to avoid extra error messages | ||||||||
| 5122 | // about unknown declarations use. | ||||||||
| 5123 | auto *VD = VarDecl::Create(Context, CurContext, StartLoc, D.DeclIdentLoc, | ||||||||
| 5124 | D.DeclIdent, DeclTy, TInfo, SC_None); | ||||||||
| 5125 | VD->setImplicit(); | ||||||||
| 5126 | if (S) { | ||||||||
| 5127 | // Check for conflicting previous declaration. | ||||||||
| 5128 | DeclarationNameInfo NameInfo(VD->getDeclName(), D.DeclIdentLoc); | ||||||||
| 5129 | LookupResult Previous(*this, NameInfo, LookupOrdinaryName, | ||||||||
| 5130 | ForVisibleRedeclaration); | ||||||||
| 5131 | Previous.suppressDiagnostics(); | ||||||||
| 5132 | LookupName(Previous, S); | ||||||||
| 5133 | |||||||||
| 5134 | FilterLookupForScope(Previous, CurContext, S, /*ConsiderLinkage=*/false, | ||||||||
| 5135 | /*AllowInlineNamespace=*/false); | ||||||||
| 5136 | if (!Previous.empty()) { | ||||||||
| 5137 | NamedDecl *Old = Previous.getRepresentativeDecl(); | ||||||||
| 5138 | Diag(D.DeclIdentLoc, diag::err_redefinition) << VD->getDeclName(); | ||||||||
| 5139 | Diag(Old->getLocation(), diag::note_previous_definition); | ||||||||
| 5140 | } else { | ||||||||
| 5141 | PushOnScopeChains(VD, S); | ||||||||
| 5142 | } | ||||||||
| 5143 | } else { | ||||||||
| 5144 | CurContext->addDecl(VD); | ||||||||
| 5145 | } | ||||||||
| 5146 | Expr *Begin = D.Range.Begin; | ||||||||
| 5147 | if (!IsDeclTyDependent && Begin && !Begin->isTypeDependent()) { | ||||||||
| 5148 | ExprResult BeginRes = | ||||||||
| 5149 | PerformImplicitConversion(Begin, DeclTy, AA_Converting); | ||||||||
| 5150 | Begin = BeginRes.get(); | ||||||||
| 5151 | } | ||||||||
| 5152 | Expr *End = D.Range.End; | ||||||||
| 5153 | if (!IsDeclTyDependent && End && !End->isTypeDependent()) { | ||||||||
| 5154 | ExprResult EndRes = PerformImplicitConversion(End, DeclTy, AA_Converting); | ||||||||
| 5155 | End = EndRes.get(); | ||||||||
| 5156 | } | ||||||||
| 5157 | Expr *Step = D.Range.Step; | ||||||||
| 5158 | if (!IsDeclTyDependent && Step && !Step->isTypeDependent()) { | ||||||||
| 5159 | if (!Step->getType()->isIntegralType(Context)) { | ||||||||
| 5160 | Diag(Step->getExprLoc(), diag::err_omp_iterator_step_not_integral) | ||||||||
| 5161 | << Step << Step->getSourceRange(); | ||||||||
| 5162 | IsCorrect = false; | ||||||||
| 5163 | continue; | ||||||||
| 5164 | } | ||||||||
| 5165 | Optional<llvm::APSInt> Result = Step->getIntegerConstantExpr(Context); | ||||||||
| 5166 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions | ||||||||
| 5167 | // If the step expression of a range-specification equals zero, the | ||||||||
| 5168 | // behavior is unspecified. | ||||||||
| 5169 | if (Result && Result->isNullValue()) { | ||||||||
| 5170 | Diag(Step->getExprLoc(), diag::err_omp_iterator_step_constant_zero) | ||||||||
| 5171 | << Step << Step->getSourceRange(); | ||||||||
| 5172 | IsCorrect = false; | ||||||||
| 5173 | continue; | ||||||||
| 5174 | } | ||||||||
| 5175 | } | ||||||||
| 5176 | if (!Begin || !End || !IsCorrect) { | ||||||||
| 5177 | IsCorrect = false; | ||||||||
| 5178 | continue; | ||||||||
| 5179 | } | ||||||||
| 5180 | OMPIteratorExpr::IteratorDefinition &IDElem = ID.emplace_back(); | ||||||||
| 5181 | IDElem.IteratorDecl = VD; | ||||||||
| 5182 | IDElem.AssignmentLoc = D.AssignLoc; | ||||||||
| 5183 | IDElem.Range.Begin = Begin; | ||||||||
| 5184 | IDElem.Range.End = End; | ||||||||
| 5185 | IDElem.Range.Step = Step; | ||||||||
| 5186 | IDElem.ColonLoc = D.ColonLoc; | ||||||||
| 5187 | IDElem.SecondColonLoc = D.SecColonLoc; | ||||||||
| 5188 | } | ||||||||
| 5189 | if (!IsCorrect) { | ||||||||
| 5190 | // Invalidate all created iterator declarations if error is found. | ||||||||
| 5191 | for (const OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||||||
| 5192 | if (Decl *ID = D.IteratorDecl) | ||||||||
| 5193 | ID->setInvalidDecl(); | ||||||||
| 5194 | } | ||||||||
| 5195 | return ExprError(); | ||||||||
| 5196 | } | ||||||||
| 5197 | SmallVector<OMPIteratorHelperData, 4> Helpers; | ||||||||
| 5198 | if (!CurContext->isDependentContext()) { | ||||||||
| 5199 | // Build number of ityeration for each iteration range. | ||||||||
| 5200 | // Ni = ((Stepi > 0) ? ((Endi + Stepi -1 - Begini)/Stepi) : | ||||||||
| 5201 | // ((Begini-Stepi-1-Endi) / -Stepi); | ||||||||
| 5202 | for (OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||||||
| 5203 | // (Endi - Begini) | ||||||||
| 5204 | ExprResult Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, D.Range.End, | ||||||||
| 5205 | D.Range.Begin); | ||||||||
| 5206 | if(!Res.isUsable()) { | ||||||||
| 5207 | IsCorrect = false; | ||||||||
| 5208 | continue; | ||||||||
| 5209 | } | ||||||||
| 5210 | ExprResult St, St1; | ||||||||
| 5211 | if (D.Range.Step) { | ||||||||
| 5212 | St = D.Range.Step; | ||||||||
| 5213 | // (Endi - Begini) + Stepi | ||||||||
| 5214 | Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res.get(), St.get()); | ||||||||
| 5215 | if (!Res.isUsable()) { | ||||||||
| 5216 | IsCorrect = false; | ||||||||
| 5217 | continue; | ||||||||
| 5218 | } | ||||||||
| 5219 | // (Endi - Begini) + Stepi - 1 | ||||||||
| 5220 | Res = | ||||||||
| 5221 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res.get(), | ||||||||
| 5222 | ActOnIntegerConstant(D.AssignmentLoc, 1).get()); | ||||||||
| 5223 | if (!Res.isUsable()) { | ||||||||
| 5224 | IsCorrect = false; | ||||||||
| 5225 | continue; | ||||||||
| 5226 | } | ||||||||
| 5227 | // ((Endi - Begini) + Stepi - 1) / Stepi | ||||||||
| 5228 | Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res.get(), St.get()); | ||||||||
| 5229 | if (!Res.isUsable()) { | ||||||||
| 5230 | IsCorrect = false; | ||||||||
| 5231 | continue; | ||||||||
| 5232 | } | ||||||||
| 5233 | St1 = CreateBuiltinUnaryOp(D.AssignmentLoc, UO_Minus, D.Range.Step); | ||||||||
| 5234 | // (Begini - Endi) | ||||||||
| 5235 | ExprResult Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, | ||||||||
| 5236 | D.Range.Begin, D.Range.End); | ||||||||
| 5237 | if (!Res1.isUsable()) { | ||||||||
| 5238 | IsCorrect = false; | ||||||||
| 5239 | continue; | ||||||||
| 5240 | } | ||||||||
| 5241 | // (Begini - Endi) - Stepi | ||||||||
| 5242 | Res1 = | ||||||||
| 5243 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res1.get(), St1.get()); | ||||||||
| 5244 | if (!Res1.isUsable()) { | ||||||||
| 5245 | IsCorrect = false; | ||||||||
| 5246 | continue; | ||||||||
| 5247 | } | ||||||||
| 5248 | // (Begini - Endi) - Stepi - 1 | ||||||||
| 5249 | Res1 = | ||||||||
| 5250 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res1.get(), | ||||||||
| 5251 | ActOnIntegerConstant(D.AssignmentLoc, 1).get()); | ||||||||
| 5252 | if (!Res1.isUsable()) { | ||||||||
| 5253 | IsCorrect = false; | ||||||||
| 5254 | continue; | ||||||||
| 5255 | } | ||||||||
| 5256 | // ((Begini - Endi) - Stepi - 1) / (-Stepi) | ||||||||
| 5257 | Res1 = | ||||||||
| 5258 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res1.get(), St1.get()); | ||||||||
| 5259 | if (!Res1.isUsable()) { | ||||||||
| 5260 | IsCorrect = false; | ||||||||
| 5261 | continue; | ||||||||
| 5262 | } | ||||||||
| 5263 | // Stepi > 0. | ||||||||
| 5264 | ExprResult CmpRes = | ||||||||
| 5265 | CreateBuiltinBinOp(D.AssignmentLoc, BO_GT, D.Range.Step, | ||||||||
| 5266 | ActOnIntegerConstant(D.AssignmentLoc, 0).get()); | ||||||||
| 5267 | if (!CmpRes.isUsable()) { | ||||||||
| 5268 | IsCorrect = false; | ||||||||
| 5269 | continue; | ||||||||
| 5270 | } | ||||||||
| 5271 | Res = ActOnConditionalOp(D.AssignmentLoc, D.AssignmentLoc, CmpRes.get(), | ||||||||
| 5272 | Res.get(), Res1.get()); | ||||||||
| 5273 | if (!Res.isUsable()) { | ||||||||
| 5274 | IsCorrect = false; | ||||||||
| 5275 | continue; | ||||||||
| 5276 | } | ||||||||
| 5277 | } | ||||||||
| 5278 | Res = ActOnFinishFullExpr(Res.get(), /*DiscardedValue=*/false); | ||||||||
| 5279 | if (!Res.isUsable()) { | ||||||||
| 5280 | IsCorrect = false; | ||||||||
| 5281 | continue; | ||||||||
| 5282 | } | ||||||||
| 5283 | |||||||||
| 5284 | // Build counter update. | ||||||||
| 5285 | // Build counter. | ||||||||
| 5286 | auto *CounterVD = | ||||||||
| 5287 | VarDecl::Create(Context, CurContext, D.IteratorDecl->getBeginLoc(), | ||||||||
| 5288 | D.IteratorDecl->getBeginLoc(), nullptr, | ||||||||
| 5289 | Res.get()->getType(), nullptr, SC_None); | ||||||||
| 5290 | CounterVD->setImplicit(); | ||||||||
| 5291 | ExprResult RefRes = | ||||||||
| 5292 | BuildDeclRefExpr(CounterVD, CounterVD->getType(), VK_LValue, | ||||||||
| 5293 | D.IteratorDecl->getBeginLoc()); | ||||||||
| 5294 | // Build counter update. | ||||||||
| 5295 | // I = Begini + counter * Stepi; | ||||||||
| 5296 | ExprResult UpdateRes; | ||||||||
| 5297 | if (D.Range.Step) { | ||||||||
| 5298 | UpdateRes = CreateBuiltinBinOp( | ||||||||
| 5299 | D.AssignmentLoc, BO_Mul, | ||||||||
| 5300 | DefaultLvalueConversion(RefRes.get()).get(), St.get()); | ||||||||
| 5301 | } else { | ||||||||
| 5302 | UpdateRes = DefaultLvalueConversion(RefRes.get()); | ||||||||
| 5303 | } | ||||||||
| 5304 | if (!UpdateRes.isUsable()) { | ||||||||
| 5305 | IsCorrect = false; | ||||||||
| 5306 | continue; | ||||||||
| 5307 | } | ||||||||
| 5308 | UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, D.Range.Begin, | ||||||||
| 5309 | UpdateRes.get()); | ||||||||
| 5310 | if (!UpdateRes.isUsable()) { | ||||||||
| 5311 | IsCorrect = false; | ||||||||
| 5312 | continue; | ||||||||
| 5313 | } | ||||||||
| 5314 | ExprResult VDRes = | ||||||||
| 5315 | BuildDeclRefExpr(cast<VarDecl>(D.IteratorDecl), | ||||||||
| 5316 | cast<VarDecl>(D.IteratorDecl)->getType(), VK_LValue, | ||||||||
| 5317 | D.IteratorDecl->getBeginLoc()); | ||||||||
| 5318 | UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Assign, VDRes.get(), | ||||||||
| 5319 | UpdateRes.get()); | ||||||||
| 5320 | if (!UpdateRes.isUsable()) { | ||||||||
| 5321 | IsCorrect = false; | ||||||||
| 5322 | continue; | ||||||||
| 5323 | } | ||||||||
| 5324 | UpdateRes = | ||||||||
| 5325 | ActOnFinishFullExpr(UpdateRes.get(), /*DiscardedValue=*/true); | ||||||||
| 5326 | if (!UpdateRes.isUsable()) { | ||||||||
| 5327 | IsCorrect = false; | ||||||||
| 5328 | continue; | ||||||||
| 5329 | } | ||||||||
| 5330 | ExprResult CounterUpdateRes = | ||||||||
| 5331 | CreateBuiltinUnaryOp(D.AssignmentLoc, UO_PreInc, RefRes.get()); | ||||||||
| 5332 | if (!CounterUpdateRes.isUsable()) { | ||||||||
| 5333 | IsCorrect = false; | ||||||||
| 5334 | continue; | ||||||||
| 5335 | } | ||||||||
| 5336 | CounterUpdateRes = | ||||||||
| 5337 | ActOnFinishFullExpr(CounterUpdateRes.get(), /*DiscardedValue=*/true); | ||||||||
| 5338 | if (!CounterUpdateRes.isUsable()) { | ||||||||
| 5339 | IsCorrect = false; | ||||||||
| 5340 | continue; | ||||||||
| 5341 | } | ||||||||
| 5342 | OMPIteratorHelperData &HD = Helpers.emplace_back(); | ||||||||
| 5343 | HD.CounterVD = CounterVD; | ||||||||
| 5344 | HD.Upper = Res.get(); | ||||||||
| 5345 | HD.Update = UpdateRes.get(); | ||||||||
| 5346 | HD.CounterUpdate = CounterUpdateRes.get(); | ||||||||
| 5347 | } | ||||||||
| 5348 | } else { | ||||||||
| 5349 | Helpers.assign(ID.size(), {}); | ||||||||
| 5350 | } | ||||||||
| 5351 | if (!IsCorrect) { | ||||||||
| 5352 | // Invalidate all created iterator declarations if error is found. | ||||||||
| 5353 | for (const OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||||||
| 5354 | if (Decl *ID = D.IteratorDecl) | ||||||||
| 5355 | ID->setInvalidDecl(); | ||||||||
| 5356 | } | ||||||||
| 5357 | return ExprError(); | ||||||||
| 5358 | } | ||||||||
| 5359 | return OMPIteratorExpr::Create(Context, Context.OMPIteratorTy, IteratorKwLoc, | ||||||||
| 5360 | LLoc, RLoc, ID, Helpers); | ||||||||
| 5361 | } | ||||||||
| 5362 | |||||||||
| 5363 | ExprResult | ||||||||
| 5364 | Sema::CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, | ||||||||
| 5365 | Expr *Idx, SourceLocation RLoc) { | ||||||||
| 5366 | Expr *LHSExp = Base; | ||||||||
| 5367 | Expr *RHSExp = Idx; | ||||||||
| 5368 | |||||||||
| 5369 | ExprValueKind VK = VK_LValue; | ||||||||
| 5370 | ExprObjectKind OK = OK_Ordinary; | ||||||||
| 5371 | |||||||||
| 5372 | // Per C++ core issue 1213, the result is an xvalue if either operand is | ||||||||
| 5373 | // a non-lvalue array, and an lvalue otherwise. | ||||||||
| 5374 | if (getLangOpts().CPlusPlus11) { | ||||||||
| 5375 | for (auto *Op : {LHSExp, RHSExp}) { | ||||||||
| 5376 | Op = Op->IgnoreImplicit(); | ||||||||
| 5377 | if (Op->getType()->isArrayType() && !Op->isLValue()) | ||||||||
| 5378 | VK = VK_XValue; | ||||||||
| 5379 | } | ||||||||
| 5380 | } | ||||||||
| 5381 | |||||||||
| 5382 | // Perform default conversions. | ||||||||
| 5383 | if (!LHSExp->getType()->getAs<VectorType>()) { | ||||||||
| 5384 | ExprResult Result = DefaultFunctionArrayLvalueConversion(LHSExp); | ||||||||
| 5385 | if (Result.isInvalid()) | ||||||||
| 5386 | return ExprError(); | ||||||||
| 5387 | LHSExp = Result.get(); | ||||||||
| 5388 | } | ||||||||
| 5389 | ExprResult Result = DefaultFunctionArrayLvalueConversion(RHSExp); | ||||||||
| 5390 | if (Result.isInvalid()) | ||||||||
| 5391 | return ExprError(); | ||||||||
| 5392 | RHSExp = Result.get(); | ||||||||
| 5393 | |||||||||
| 5394 | QualType LHSTy = LHSExp->getType(), RHSTy = RHSExp->getType(); | ||||||||
| 5395 | |||||||||
| 5396 | // C99 6.5.2.1p2: the expression e1[e2] is by definition precisely equivalent | ||||||||
| 5397 | // to the expression *((e1)+(e2)). This means the array "Base" may actually be | ||||||||
| 5398 | // in the subscript position. As a result, we need to derive the array base | ||||||||
| 5399 | // and index from the expression types. | ||||||||
| 5400 | Expr *BaseExpr, *IndexExpr; | ||||||||
| 5401 | QualType ResultType; | ||||||||
| 5402 | if (LHSTy->isDependentType() || RHSTy->isDependentType()) { | ||||||||
| 5403 | BaseExpr = LHSExp; | ||||||||
| 5404 | IndexExpr = RHSExp; | ||||||||
| 5405 | ResultType = Context.DependentTy; | ||||||||
| 5406 | } else if (const PointerType *PTy = LHSTy->getAs<PointerType>()) { | ||||||||
| 5407 | BaseExpr = LHSExp; | ||||||||
| 5408 | IndexExpr = RHSExp; | ||||||||
| 5409 | ResultType = PTy->getPointeeType(); | ||||||||
| 5410 | } else if (const ObjCObjectPointerType *PTy = | ||||||||
| 5411 | LHSTy->getAs<ObjCObjectPointerType>()) { | ||||||||
| 5412 | BaseExpr = LHSExp; | ||||||||
| 5413 | IndexExpr = RHSExp; | ||||||||
| 5414 | |||||||||
| 5415 | // Use custom logic if this should be the pseudo-object subscript | ||||||||
| 5416 | // expression. | ||||||||
| 5417 | if (!LangOpts.isSubscriptPointerArithmetic()) | ||||||||
| 5418 | return BuildObjCSubscriptExpression(RLoc, BaseExpr, IndexExpr, nullptr, | ||||||||
| 5419 | nullptr); | ||||||||
| 5420 | |||||||||
| 5421 | ResultType = PTy->getPointeeType(); | ||||||||
| 5422 | } else if (const PointerType *PTy = RHSTy->getAs<PointerType>()) { | ||||||||
| 5423 | // Handle the uncommon case of "123[Ptr]". | ||||||||
| 5424 | BaseExpr = RHSExp; | ||||||||
| 5425 | IndexExpr = LHSExp; | ||||||||
| 5426 | ResultType = PTy->getPointeeType(); | ||||||||
| 5427 | } else if (const ObjCObjectPointerType *PTy = | ||||||||
| 5428 | RHSTy->getAs<ObjCObjectPointerType>()) { | ||||||||
| 5429 | // Handle the uncommon case of "123[Ptr]". | ||||||||
| 5430 | BaseExpr = RHSExp; | ||||||||
| 5431 | IndexExpr = LHSExp; | ||||||||
| 5432 | ResultType = PTy->getPointeeType(); | ||||||||
| 5433 | if (!LangOpts.isSubscriptPointerArithmetic()) { | ||||||||
| 5434 | Diag(LLoc, diag::err_subscript_nonfragile_interface) | ||||||||
| 5435 | << ResultType << BaseExpr->getSourceRange(); | ||||||||
| 5436 | return ExprError(); | ||||||||
| 5437 | } | ||||||||
| 5438 | } else if (const VectorType *VTy = LHSTy->getAs<VectorType>()) { | ||||||||
| 5439 | BaseExpr = LHSExp; // vectors: V[123] | ||||||||
| 5440 | IndexExpr = RHSExp; | ||||||||
| 5441 | // We apply C++ DR1213 to vector subscripting too. | ||||||||
| 5442 | if (getLangOpts().CPlusPlus11 && LHSExp->getValueKind() == VK_RValue) { | ||||||||
| 5443 | ExprResult Materialized = TemporaryMaterializationConversion(LHSExp); | ||||||||
| 5444 | if (Materialized.isInvalid()) | ||||||||
| 5445 | return ExprError(); | ||||||||
| 5446 | LHSExp = Materialized.get(); | ||||||||
| 5447 | } | ||||||||
| 5448 | VK = LHSExp->getValueKind(); | ||||||||
| 5449 | if (VK != VK_RValue) | ||||||||
| 5450 | OK = OK_VectorComponent; | ||||||||
| 5451 | |||||||||
| 5452 | ResultType = VTy->getElementType(); | ||||||||
| 5453 | QualType BaseType = BaseExpr->getType(); | ||||||||
| 5454 | Qualifiers BaseQuals = BaseType.getQualifiers(); | ||||||||
| 5455 | Qualifiers MemberQuals = ResultType.getQualifiers(); | ||||||||
| 5456 | Qualifiers Combined = BaseQuals + MemberQuals; | ||||||||
| 5457 | if (Combined != MemberQuals) | ||||||||
| 5458 | ResultType = Context.getQualifiedType(ResultType, Combined); | ||||||||
| 5459 | } else if (LHSTy->isArrayType()) { | ||||||||
| 5460 | // If we see an array that wasn't promoted by | ||||||||
| 5461 | // DefaultFunctionArrayLvalueConversion, it must be an array that | ||||||||
| 5462 | // wasn't promoted because of the C90 rule that doesn't | ||||||||
| 5463 | // allow promoting non-lvalue arrays. Warn, then | ||||||||
| 5464 | // force the promotion here. | ||||||||
| 5465 | Diag(LHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) | ||||||||
| 5466 | << LHSExp->getSourceRange(); | ||||||||
| 5467 | LHSExp = ImpCastExprToType(LHSExp, Context.getArrayDecayedType(LHSTy), | ||||||||
| 5468 | CK_ArrayToPointerDecay).get(); | ||||||||
| 5469 | LHSTy = LHSExp->getType(); | ||||||||
| 5470 | |||||||||
| 5471 | BaseExpr = LHSExp; | ||||||||
| 5472 | IndexExpr = RHSExp; | ||||||||
| 5473 | ResultType = LHSTy->getAs<PointerType>()->getPointeeType(); | ||||||||
| 5474 | } else if (RHSTy->isArrayType()) { | ||||||||
| 5475 | // Same as previous, except for 123[f().a] case | ||||||||
| 5476 | Diag(RHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) | ||||||||
| 5477 | << RHSExp->getSourceRange(); | ||||||||
| 5478 | RHSExp = ImpCastExprToType(RHSExp, Context.getArrayDecayedType(RHSTy), | ||||||||
| 5479 | CK_ArrayToPointerDecay).get(); | ||||||||
| 5480 | RHSTy = RHSExp->getType(); | ||||||||
| 5481 | |||||||||
| 5482 | BaseExpr = RHSExp; | ||||||||
| 5483 | IndexExpr = LHSExp; | ||||||||
| 5484 | ResultType = RHSTy->getAs<PointerType>()->getPointeeType(); | ||||||||
| 5485 | } else { | ||||||||
| 5486 | return ExprError(Diag(LLoc, diag::err_typecheck_subscript_value) | ||||||||
| 5487 | << LHSExp->getSourceRange() << RHSExp->getSourceRange()); | ||||||||
| 5488 | } | ||||||||
| 5489 | // C99 6.5.2.1p1 | ||||||||
| 5490 | if (!IndexExpr->getType()->isIntegerType() && !IndexExpr->isTypeDependent()) | ||||||||
| 5491 | return ExprError(Diag(LLoc, diag::err_typecheck_subscript_not_integer) | ||||||||
| 5492 | << IndexExpr->getSourceRange()); | ||||||||
| 5493 | |||||||||
| 5494 | if ((IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||||||
| 5495 | IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||||||
| 5496 | && !IndexExpr->isTypeDependent()) | ||||||||
| 5497 | Diag(LLoc, diag::warn_subscript_is_char) << IndexExpr->getSourceRange(); | ||||||||
| 5498 | |||||||||
| 5499 | // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, | ||||||||
| 5500 | // C++ [expr.sub]p1: The type "T" shall be a completely-defined object | ||||||||
| 5501 | // type. Note that Functions are not objects, and that (in C99 parlance) | ||||||||
| 5502 | // incomplete types are not object types. | ||||||||
| 5503 | if (ResultType->isFunctionType()) { | ||||||||
| 5504 | Diag(BaseExpr->getBeginLoc(), diag::err_subscript_function_type) | ||||||||
| 5505 | << ResultType << BaseExpr->getSourceRange(); | ||||||||
| 5506 | return ExprError(); | ||||||||
| 5507 | } | ||||||||
| 5508 | |||||||||
| 5509 | if (ResultType->isVoidType() && !getLangOpts().CPlusPlus) { | ||||||||
| 5510 | // GNU extension: subscripting on pointer to void | ||||||||
| 5511 | Diag(LLoc, diag::ext_gnu_subscript_void_type) | ||||||||
| 5512 | << BaseExpr->getSourceRange(); | ||||||||
| 5513 | |||||||||
| 5514 | // C forbids expressions of unqualified void type from being l-values. | ||||||||
| 5515 | // See IsCForbiddenLValueType. | ||||||||
| 5516 | if (!ResultType.hasQualifiers()) VK = VK_RValue; | ||||||||
| 5517 | } else if (!ResultType->isDependentType() && | ||||||||
| 5518 | RequireCompleteSizedType( | ||||||||
| 5519 | LLoc, ResultType, | ||||||||
| 5520 | diag::err_subscript_incomplete_or_sizeless_type, BaseExpr)) | ||||||||
| 5521 | return ExprError(); | ||||||||
| 5522 | |||||||||
| 5523 | assert(VK == VK_RValue || LangOpts.CPlusPlus ||((VK == VK_RValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType ()) ? static_cast<void> (0) : __assert_fail ("VK == VK_RValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5524, __PRETTY_FUNCTION__)) | ||||||||
| 5524 | !ResultType.isCForbiddenLValueType())((VK == VK_RValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType ()) ? static_cast<void> (0) : __assert_fail ("VK == VK_RValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5524, __PRETTY_FUNCTION__)); | ||||||||
| 5525 | |||||||||
| 5526 | if (LHSExp->IgnoreParenImpCasts()->getType()->isVariablyModifiedType() && | ||||||||
| 5527 | FunctionScopes.size() > 1) { | ||||||||
| 5528 | if (auto *TT = | ||||||||
| 5529 | LHSExp->IgnoreParenImpCasts()->getType()->getAs<TypedefType>()) { | ||||||||
| 5530 | for (auto I = FunctionScopes.rbegin(), | ||||||||
| 5531 | E = std::prev(FunctionScopes.rend()); | ||||||||
| 5532 | I != E; ++I) { | ||||||||
| 5533 | auto *CSI = dyn_cast<CapturingScopeInfo>(*I); | ||||||||
| 5534 | if (CSI == nullptr) | ||||||||
| 5535 | break; | ||||||||
| 5536 | DeclContext *DC = nullptr; | ||||||||
| 5537 | if (auto *LSI = dyn_cast<LambdaScopeInfo>(CSI)) | ||||||||
| 5538 | DC = LSI->CallOperator; | ||||||||
| 5539 | else if (auto *CRSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) | ||||||||
| 5540 | DC = CRSI->TheCapturedDecl; | ||||||||
| 5541 | else if (auto *BSI = dyn_cast<BlockScopeInfo>(CSI)) | ||||||||
| 5542 | DC = BSI->TheDecl; | ||||||||
| 5543 | if (DC) { | ||||||||
| 5544 | if (DC->containsDecl(TT->getDecl())) | ||||||||
| 5545 | break; | ||||||||
| 5546 | captureVariablyModifiedType( | ||||||||
| 5547 | Context, LHSExp->IgnoreParenImpCasts()->getType(), CSI); | ||||||||
| 5548 | } | ||||||||
| 5549 | } | ||||||||
| 5550 | } | ||||||||
| 5551 | } | ||||||||
| 5552 | |||||||||
| 5553 | return new (Context) | ||||||||
| 5554 | ArraySubscriptExpr(LHSExp, RHSExp, ResultType, VK, OK, RLoc); | ||||||||
| 5555 | } | ||||||||
| 5556 | |||||||||
| 5557 | bool Sema::CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, | ||||||||
| 5558 | ParmVarDecl *Param) { | ||||||||
| 5559 | if (Param->hasUnparsedDefaultArg()) { | ||||||||
| 5560 | // If we've already cleared out the location for the default argument, | ||||||||
| 5561 | // that means we're parsing it right now. | ||||||||
| 5562 | if (!UnparsedDefaultArgLocs.count(Param)) { | ||||||||
| 5563 | Diag(Param->getBeginLoc(), diag::err_recursive_default_argument) << FD; | ||||||||
| 5564 | Diag(CallLoc, diag::note_recursive_default_argument_used_here); | ||||||||
| 5565 | Param->setInvalidDecl(); | ||||||||
| 5566 | return true; | ||||||||
| 5567 | } | ||||||||
| 5568 | |||||||||
| 5569 | Diag(CallLoc, diag::err_use_of_default_argument_to_function_declared_later) | ||||||||
| 5570 | << FD << cast<CXXRecordDecl>(FD->getDeclContext()); | ||||||||
| 5571 | Diag(UnparsedDefaultArgLocs[Param], | ||||||||
| 5572 | diag::note_default_argument_declared_here); | ||||||||
| 5573 | return true; | ||||||||
| 5574 | } | ||||||||
| 5575 | |||||||||
| 5576 | if (Param->hasUninstantiatedDefaultArg() && | ||||||||
| 5577 | InstantiateDefaultArgument(CallLoc, FD, Param)) | ||||||||
| 5578 | return true; | ||||||||
| 5579 | |||||||||
| 5580 | assert(Param->hasInit() && "default argument but no initializer?")((Param->hasInit() && "default argument but no initializer?" ) ? static_cast<void> (0) : __assert_fail ("Param->hasInit() && \"default argument but no initializer?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5580, __PRETTY_FUNCTION__)); | ||||||||
| 5581 | |||||||||
| 5582 | // If the default expression creates temporaries, we need to | ||||||||
| 5583 | // push them to the current stack of expression temporaries so they'll | ||||||||
| 5584 | // be properly destroyed. | ||||||||
| 5585 | // FIXME: We should really be rebuilding the default argument with new | ||||||||
| 5586 | // bound temporaries; see the comment in PR5810. | ||||||||
| 5587 | // We don't need to do that with block decls, though, because | ||||||||
| 5588 | // blocks in default argument expression can never capture anything. | ||||||||
| 5589 | if (auto Init = dyn_cast<ExprWithCleanups>(Param->getInit())) { | ||||||||
| 5590 | // Set the "needs cleanups" bit regardless of whether there are | ||||||||
| 5591 | // any explicit objects. | ||||||||
| 5592 | Cleanup.setExprNeedsCleanups(Init->cleanupsHaveSideEffects()); | ||||||||
| 5593 | |||||||||
| 5594 | // Append all the objects to the cleanup list. Right now, this | ||||||||
| 5595 | // should always be a no-op, because blocks in default argument | ||||||||
| 5596 | // expressions should never be able to capture anything. | ||||||||
| 5597 | assert(!Init->getNumObjects() &&((!Init->getNumObjects() && "default argument expression has capturing blocks?" ) ? static_cast<void> (0) : __assert_fail ("!Init->getNumObjects() && \"default argument expression has capturing blocks?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5598, __PRETTY_FUNCTION__)) | ||||||||
| 5598 | "default argument expression has capturing blocks?")((!Init->getNumObjects() && "default argument expression has capturing blocks?" ) ? static_cast<void> (0) : __assert_fail ("!Init->getNumObjects() && \"default argument expression has capturing blocks?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5598, __PRETTY_FUNCTION__)); | ||||||||
| 5599 | } | ||||||||
| 5600 | |||||||||
| 5601 | // We already type-checked the argument, so we know it works. | ||||||||
| 5602 | // Just mark all of the declarations in this potentially-evaluated expression | ||||||||
| 5603 | // as being "referenced". | ||||||||
| 5604 | EnterExpressionEvaluationContext EvalContext( | ||||||||
| 5605 | *this, ExpressionEvaluationContext::PotentiallyEvaluated, Param); | ||||||||
| 5606 | MarkDeclarationsReferencedInExpr(Param->getDefaultArg(), | ||||||||
| 5607 | /*SkipLocalVariables=*/true); | ||||||||
| 5608 | return false; | ||||||||
| 5609 | } | ||||||||
| 5610 | |||||||||
| 5611 | ExprResult Sema::BuildCXXDefaultArgExpr(SourceLocation CallLoc, | ||||||||
| 5612 | FunctionDecl *FD, ParmVarDecl *Param) { | ||||||||
| 5613 | assert(Param->hasDefaultArg() && "can't build nonexistent default arg")((Param->hasDefaultArg() && "can't build nonexistent default arg" ) ? static_cast<void> (0) : __assert_fail ("Param->hasDefaultArg() && \"can't build nonexistent default arg\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5613, __PRETTY_FUNCTION__)); | ||||||||
| 5614 | if (CheckCXXDefaultArgExpr(CallLoc, FD, Param)) | ||||||||
| 5615 | return ExprError(); | ||||||||
| 5616 | return CXXDefaultArgExpr::Create(Context, CallLoc, Param, CurContext); | ||||||||
| 5617 | } | ||||||||
| 5618 | |||||||||
| 5619 | Sema::VariadicCallType | ||||||||
| 5620 | Sema::getVariadicCallType(FunctionDecl *FDecl, const FunctionProtoType *Proto, | ||||||||
| 5621 | Expr *Fn) { | ||||||||
| 5622 | if (Proto && Proto->isVariadic()) { | ||||||||
| 5623 | if (dyn_cast_or_null<CXXConstructorDecl>(FDecl)) | ||||||||
| 5624 | return VariadicConstructor; | ||||||||
| 5625 | else if (Fn && Fn->getType()->isBlockPointerType()) | ||||||||
| 5626 | return VariadicBlock; | ||||||||
| 5627 | else if (FDecl) { | ||||||||
| 5628 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl)) | ||||||||
| 5629 | if (Method->isInstance()) | ||||||||
| 5630 | return VariadicMethod; | ||||||||
| 5631 | } else if (Fn && Fn->getType() == Context.BoundMemberTy) | ||||||||
| 5632 | return VariadicMethod; | ||||||||
| 5633 | return VariadicFunction; | ||||||||
| 5634 | } | ||||||||
| 5635 | return VariadicDoesNotApply; | ||||||||
| 5636 | } | ||||||||
| 5637 | |||||||||
| 5638 | namespace { | ||||||||
| 5639 | class FunctionCallCCC final : public FunctionCallFilterCCC { | ||||||||
| 5640 | public: | ||||||||
| 5641 | FunctionCallCCC(Sema &SemaRef, const IdentifierInfo *FuncName, | ||||||||
| 5642 | unsigned NumArgs, MemberExpr *ME) | ||||||||
| 5643 | : FunctionCallFilterCCC(SemaRef, NumArgs, false, ME), | ||||||||
| 5644 | FunctionName(FuncName) {} | ||||||||
| 5645 | |||||||||
| 5646 | bool ValidateCandidate(const TypoCorrection &candidate) override { | ||||||||
| 5647 | if (!candidate.getCorrectionSpecifier() || | ||||||||
| 5648 | candidate.getCorrectionAsIdentifierInfo() != FunctionName) { | ||||||||
| 5649 | return false; | ||||||||
| 5650 | } | ||||||||
| 5651 | |||||||||
| 5652 | return FunctionCallFilterCCC::ValidateCandidate(candidate); | ||||||||
| 5653 | } | ||||||||
| 5654 | |||||||||
| 5655 | std::unique_ptr<CorrectionCandidateCallback> clone() override { | ||||||||
| 5656 | return std::make_unique<FunctionCallCCC>(*this); | ||||||||
| 5657 | } | ||||||||
| 5658 | |||||||||
| 5659 | private: | ||||||||
| 5660 | const IdentifierInfo *const FunctionName; | ||||||||
| 5661 | }; | ||||||||
| 5662 | } | ||||||||
| 5663 | |||||||||
| 5664 | static TypoCorrection TryTypoCorrectionForCall(Sema &S, Expr *Fn, | ||||||||
| 5665 | FunctionDecl *FDecl, | ||||||||
| 5666 | ArrayRef<Expr *> Args) { | ||||||||
| 5667 | MemberExpr *ME = dyn_cast<MemberExpr>(Fn); | ||||||||
| 5668 | DeclarationName FuncName = FDecl->getDeclName(); | ||||||||
| 5669 | SourceLocation NameLoc = ME ? ME->getMemberLoc() : Fn->getBeginLoc(); | ||||||||
| 5670 | |||||||||
| 5671 | FunctionCallCCC CCC(S, FuncName.getAsIdentifierInfo(), Args.size(), ME); | ||||||||
| 5672 | if (TypoCorrection Corrected = S.CorrectTypo( | ||||||||
| 5673 | DeclarationNameInfo(FuncName, NameLoc), Sema::LookupOrdinaryName, | ||||||||
| 5674 | S.getScopeForContext(S.CurContext), nullptr, CCC, | ||||||||
| 5675 | Sema::CTK_ErrorRecovery)) { | ||||||||
| 5676 | if (NamedDecl *ND = Corrected.getFoundDecl()) { | ||||||||
| 5677 | if (Corrected.isOverloaded()) { | ||||||||
| 5678 | OverloadCandidateSet OCS(NameLoc, OverloadCandidateSet::CSK_Normal); | ||||||||
| 5679 | OverloadCandidateSet::iterator Best; | ||||||||
| 5680 | for (NamedDecl *CD : Corrected) { | ||||||||
| 5681 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(CD)) | ||||||||
| 5682 | S.AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), Args, | ||||||||
| 5683 | OCS); | ||||||||
| 5684 | } | ||||||||
| 5685 | switch (OCS.BestViableFunction(S, NameLoc, Best)) { | ||||||||
| 5686 | case OR_Success: | ||||||||
| 5687 | ND = Best->FoundDecl; | ||||||||
| 5688 | Corrected.setCorrectionDecl(ND); | ||||||||
| 5689 | break; | ||||||||
| 5690 | default: | ||||||||
| 5691 | break; | ||||||||
| 5692 | } | ||||||||
| 5693 | } | ||||||||
| 5694 | ND = ND->getUnderlyingDecl(); | ||||||||
| 5695 | if (isa<ValueDecl>(ND) || isa<FunctionTemplateDecl>(ND)) | ||||||||
| 5696 | return Corrected; | ||||||||
| 5697 | } | ||||||||
| 5698 | } | ||||||||
| 5699 | return TypoCorrection(); | ||||||||
| 5700 | } | ||||||||
| 5701 | |||||||||
| 5702 | /// ConvertArgumentsForCall - Converts the arguments specified in | ||||||||
| 5703 | /// Args/NumArgs to the parameter types of the function FDecl with | ||||||||
| 5704 | /// function prototype Proto. Call is the call expression itself, and | ||||||||
| 5705 | /// Fn is the function expression. For a C++ member function, this | ||||||||
| 5706 | /// routine does not attempt to convert the object argument. Returns | ||||||||
| 5707 | /// true if the call is ill-formed. | ||||||||
| 5708 | bool | ||||||||
| 5709 | Sema::ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, | ||||||||
| 5710 | FunctionDecl *FDecl, | ||||||||
| 5711 | const FunctionProtoType *Proto, | ||||||||
| 5712 | ArrayRef<Expr *> Args, | ||||||||
| 5713 | SourceLocation RParenLoc, | ||||||||
| 5714 | bool IsExecConfig) { | ||||||||
| 5715 | // Bail out early if calling a builtin with custom typechecking. | ||||||||
| 5716 | if (FDecl) | ||||||||
| 5717 | if (unsigned ID = FDecl->getBuiltinID()) | ||||||||
| 5718 | if (Context.BuiltinInfo.hasCustomTypechecking(ID)) | ||||||||
| 5719 | return false; | ||||||||
| 5720 | |||||||||
| 5721 | // C99 6.5.2.2p7 - the arguments are implicitly converted, as if by | ||||||||
| 5722 | // assignment, to the types of the corresponding parameter, ... | ||||||||
| 5723 | unsigned NumParams = Proto->getNumParams(); | ||||||||
| 5724 | bool Invalid = false; | ||||||||
| 5725 | unsigned MinArgs = FDecl ? FDecl->getMinRequiredArguments() : NumParams; | ||||||||
| 5726 | unsigned FnKind = Fn->getType()->isBlockPointerType() | ||||||||
| 5727 | ? 1 /* block */ | ||||||||
| 5728 | : (IsExecConfig ? 3 /* kernel function (exec config) */ | ||||||||
| 5729 | : 0 /* function */); | ||||||||
| 5730 | |||||||||
| 5731 | // If too few arguments are available (and we don't have default | ||||||||
| 5732 | // arguments for the remaining parameters), don't make the call. | ||||||||
| 5733 | if (Args.size() < NumParams) { | ||||||||
| 5734 | if (Args.size() < MinArgs) { | ||||||||
| 5735 | TypoCorrection TC; | ||||||||
| 5736 | if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { | ||||||||
| 5737 | unsigned diag_id = | ||||||||
| 5738 | MinArgs == NumParams && !Proto->isVariadic() | ||||||||
| 5739 | ? diag::err_typecheck_call_too_few_args_suggest | ||||||||
| 5740 | : diag::err_typecheck_call_too_few_args_at_least_suggest; | ||||||||
| 5741 | diagnoseTypo(TC, PDiag(diag_id) << FnKind << MinArgs | ||||||||
| 5742 | << static_cast<unsigned>(Args.size()) | ||||||||
| 5743 | << TC.getCorrectionRange()); | ||||||||
| 5744 | } else if (MinArgs == 1 && FDecl && FDecl->getParamDecl(0)->getDeclName()) | ||||||||
| 5745 | Diag(RParenLoc, | ||||||||
| 5746 | MinArgs == NumParams && !Proto->isVariadic() | ||||||||
| 5747 | ? diag::err_typecheck_call_too_few_args_one | ||||||||
| 5748 | : diag::err_typecheck_call_too_few_args_at_least_one) | ||||||||
| 5749 | << FnKind << FDecl->getParamDecl(0) << Fn->getSourceRange(); | ||||||||
| 5750 | else | ||||||||
| 5751 | Diag(RParenLoc, MinArgs == NumParams && !Proto->isVariadic() | ||||||||
| 5752 | ? diag::err_typecheck_call_too_few_args | ||||||||
| 5753 | : diag::err_typecheck_call_too_few_args_at_least) | ||||||||
| 5754 | << FnKind << MinArgs << static_cast<unsigned>(Args.size()) | ||||||||
| 5755 | << Fn->getSourceRange(); | ||||||||
| 5756 | |||||||||
| 5757 | // Emit the location of the prototype. | ||||||||
| 5758 | if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) | ||||||||
| 5759 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||||||
| 5760 | |||||||||
| 5761 | return true; | ||||||||
| 5762 | } | ||||||||
| 5763 | // We reserve space for the default arguments when we create | ||||||||
| 5764 | // the call expression, before calling ConvertArgumentsForCall. | ||||||||
| 5765 | assert((Call->getNumArgs() == NumParams) &&(((Call->getNumArgs() == NumParams) && "We should have reserved space for the default arguments before!" ) ? static_cast<void> (0) : __assert_fail ("(Call->getNumArgs() == NumParams) && \"We should have reserved space for the default arguments before!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5766, __PRETTY_FUNCTION__)) | ||||||||
| 5766 | "We should have reserved space for the default arguments before!")(((Call->getNumArgs() == NumParams) && "We should have reserved space for the default arguments before!" ) ? static_cast<void> (0) : __assert_fail ("(Call->getNumArgs() == NumParams) && \"We should have reserved space for the default arguments before!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5766, __PRETTY_FUNCTION__)); | ||||||||
| 5767 | } | ||||||||
| 5768 | |||||||||
| 5769 | // If too many are passed and not variadic, error on the extras and drop | ||||||||
| 5770 | // them. | ||||||||
| 5771 | if (Args.size() > NumParams) { | ||||||||
| 5772 | if (!Proto->isVariadic()) { | ||||||||
| 5773 | TypoCorrection TC; | ||||||||
| 5774 | if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { | ||||||||
| 5775 | unsigned diag_id = | ||||||||
| 5776 | MinArgs == NumParams && !Proto->isVariadic() | ||||||||
| 5777 | ? diag::err_typecheck_call_too_many_args_suggest | ||||||||
| 5778 | : diag::err_typecheck_call_too_many_args_at_most_suggest; | ||||||||
| 5779 | diagnoseTypo(TC, PDiag(diag_id) << FnKind << NumParams | ||||||||
| 5780 | << static_cast<unsigned>(Args.size()) | ||||||||
| 5781 | << TC.getCorrectionRange()); | ||||||||
| 5782 | } else if (NumParams == 1 && FDecl && | ||||||||
| 5783 | FDecl->getParamDecl(0)->getDeclName()) | ||||||||
| 5784 | Diag(Args[NumParams]->getBeginLoc(), | ||||||||
| 5785 | MinArgs == NumParams | ||||||||
| 5786 | ? diag::err_typecheck_call_too_many_args_one | ||||||||
| 5787 | : diag::err_typecheck_call_too_many_args_at_most_one) | ||||||||
| 5788 | << FnKind << FDecl->getParamDecl(0) | ||||||||
| 5789 | << static_cast<unsigned>(Args.size()) << Fn->getSourceRange() | ||||||||
| 5790 | << SourceRange(Args[NumParams]->getBeginLoc(), | ||||||||
| 5791 | Args.back()->getEndLoc()); | ||||||||
| 5792 | else | ||||||||
| 5793 | Diag(Args[NumParams]->getBeginLoc(), | ||||||||
| 5794 | MinArgs == NumParams | ||||||||
| 5795 | ? diag::err_typecheck_call_too_many_args | ||||||||
| 5796 | : diag::err_typecheck_call_too_many_args_at_most) | ||||||||
| 5797 | << FnKind << NumParams << static_cast<unsigned>(Args.size()) | ||||||||
| 5798 | << Fn->getSourceRange() | ||||||||
| 5799 | << SourceRange(Args[NumParams]->getBeginLoc(), | ||||||||
| 5800 | Args.back()->getEndLoc()); | ||||||||
| 5801 | |||||||||
| 5802 | // Emit the location of the prototype. | ||||||||
| 5803 | if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) | ||||||||
| 5804 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||||||
| 5805 | |||||||||
| 5806 | // This deletes the extra arguments. | ||||||||
| 5807 | Call->shrinkNumArgs(NumParams); | ||||||||
| 5808 | return true; | ||||||||
| 5809 | } | ||||||||
| 5810 | } | ||||||||
| 5811 | SmallVector<Expr *, 8> AllArgs; | ||||||||
| 5812 | VariadicCallType CallType = getVariadicCallType(FDecl, Proto, Fn); | ||||||||
| 5813 | |||||||||
| 5814 | Invalid = GatherArgumentsForCall(Call->getBeginLoc(), FDecl, Proto, 0, Args, | ||||||||
| 5815 | AllArgs, CallType); | ||||||||
| 5816 | if (Invalid) | ||||||||
| 5817 | return true; | ||||||||
| 5818 | unsigned TotalNumArgs = AllArgs.size(); | ||||||||
| 5819 | for (unsigned i = 0; i < TotalNumArgs; ++i) | ||||||||
| 5820 | Call->setArg(i, AllArgs[i]); | ||||||||
| 5821 | |||||||||
| 5822 | return false; | ||||||||
| 5823 | } | ||||||||
| 5824 | |||||||||
| 5825 | bool Sema::GatherArgumentsForCall(SourceLocation CallLoc, FunctionDecl *FDecl, | ||||||||
| 5826 | const FunctionProtoType *Proto, | ||||||||
| 5827 | unsigned FirstParam, ArrayRef<Expr *> Args, | ||||||||
| 5828 | SmallVectorImpl<Expr *> &AllArgs, | ||||||||
| 5829 | VariadicCallType CallType, bool AllowExplicit, | ||||||||
| 5830 | bool IsListInitialization) { | ||||||||
| 5831 | unsigned NumParams = Proto->getNumParams(); | ||||||||
| 5832 | bool Invalid = false; | ||||||||
| 5833 | size_t ArgIx = 0; | ||||||||
| 5834 | // Continue to check argument types (even if we have too few/many args). | ||||||||
| 5835 | for (unsigned i = FirstParam; i < NumParams; i++) { | ||||||||
| 5836 | QualType ProtoArgType = Proto->getParamType(i); | ||||||||
| 5837 | |||||||||
| 5838 | Expr *Arg; | ||||||||
| 5839 | ParmVarDecl *Param = FDecl ? FDecl->getParamDecl(i) : nullptr; | ||||||||
| 5840 | if (ArgIx < Args.size()) { | ||||||||
| 5841 | Arg = Args[ArgIx++]; | ||||||||
| 5842 | |||||||||
| 5843 | if (RequireCompleteType(Arg->getBeginLoc(), ProtoArgType, | ||||||||
| 5844 | diag::err_call_incomplete_argument, Arg)) | ||||||||
| 5845 | return true; | ||||||||
| 5846 | |||||||||
| 5847 | // Strip the unbridged-cast placeholder expression off, if applicable. | ||||||||
| 5848 | bool CFAudited = false; | ||||||||
| 5849 | if (Arg->getType() == Context.ARCUnbridgedCastTy && | ||||||||
| 5850 | FDecl && FDecl->hasAttr<CFAuditedTransferAttr>() && | ||||||||
| 5851 | (!Param || !Param->hasAttr<CFConsumedAttr>())) | ||||||||
| 5852 | Arg = stripARCUnbridgedCast(Arg); | ||||||||
| 5853 | else if (getLangOpts().ObjCAutoRefCount && | ||||||||
| 5854 | FDecl && FDecl->hasAttr<CFAuditedTransferAttr>() && | ||||||||
| 5855 | (!Param || !Param->hasAttr<CFConsumedAttr>())) | ||||||||
| 5856 | CFAudited = true; | ||||||||
| 5857 | |||||||||
| 5858 | if (Proto->getExtParameterInfo(i).isNoEscape()) | ||||||||
| 5859 | if (auto *BE = dyn_cast<BlockExpr>(Arg->IgnoreParenNoopCasts(Context))) | ||||||||
| 5860 | BE->getBlockDecl()->setDoesNotEscape(); | ||||||||
| 5861 | |||||||||
| 5862 | InitializedEntity Entity = | ||||||||
| 5863 | Param ? InitializedEntity::InitializeParameter(Context, Param, | ||||||||
| 5864 | ProtoArgType) | ||||||||
| 5865 | : InitializedEntity::InitializeParameter( | ||||||||
| 5866 | Context, ProtoArgType, Proto->isParamConsumed(i)); | ||||||||
| 5867 | |||||||||
| 5868 | // Remember that parameter belongs to a CF audited API. | ||||||||
| 5869 | if (CFAudited) | ||||||||
| 5870 | Entity.setParameterCFAudited(); | ||||||||
| 5871 | |||||||||
| 5872 | ExprResult ArgE = PerformCopyInitialization( | ||||||||
| 5873 | Entity, SourceLocation(), Arg, IsListInitialization, AllowExplicit); | ||||||||
| 5874 | if (ArgE.isInvalid()) | ||||||||
| 5875 | return true; | ||||||||
| 5876 | |||||||||
| 5877 | Arg = ArgE.getAs<Expr>(); | ||||||||
| 5878 | } else { | ||||||||
| 5879 | assert(Param && "can't use default arguments without a known callee")((Param && "can't use default arguments without a known callee" ) ? static_cast<void> (0) : __assert_fail ("Param && \"can't use default arguments without a known callee\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 5879, __PRETTY_FUNCTION__)); | ||||||||
| 5880 | |||||||||
| 5881 | ExprResult ArgExpr = BuildCXXDefaultArgExpr(CallLoc, FDecl, Param); | ||||||||
| 5882 | if (ArgExpr.isInvalid()) | ||||||||
| 5883 | return true; | ||||||||
| 5884 | |||||||||
| 5885 | Arg = ArgExpr.getAs<Expr>(); | ||||||||
| 5886 | } | ||||||||
| 5887 | |||||||||
| 5888 | // Check for array bounds violations for each argument to the call. This | ||||||||
| 5889 | // check only triggers warnings when the argument isn't a more complex Expr | ||||||||
| 5890 | // with its own checking, such as a BinaryOperator. | ||||||||
| 5891 | CheckArrayAccess(Arg); | ||||||||
| 5892 | |||||||||
| 5893 | // Check for violations of C99 static array rules (C99 6.7.5.3p7). | ||||||||
| 5894 | CheckStaticArrayArgument(CallLoc, Param, Arg); | ||||||||
| 5895 | |||||||||
| 5896 | AllArgs.push_back(Arg); | ||||||||
| 5897 | } | ||||||||
| 5898 | |||||||||
| 5899 | // If this is a variadic call, handle args passed through "...". | ||||||||
| 5900 | if (CallType != VariadicDoesNotApply) { | ||||||||
| 5901 | // Assume that extern "C" functions with variadic arguments that | ||||||||
| 5902 | // return __unknown_anytype aren't *really* variadic. | ||||||||
| 5903 | if (Proto->getReturnType() == Context.UnknownAnyTy && FDecl && | ||||||||
| 5904 | FDecl->isExternC()) { | ||||||||
| 5905 | for (Expr *A : Args.slice(ArgIx)) { | ||||||||
| 5906 | QualType paramType; // ignored | ||||||||
| 5907 | ExprResult arg = checkUnknownAnyArg(CallLoc, A, paramType); | ||||||||
| 5908 | Invalid |= arg.isInvalid(); | ||||||||
| 5909 | AllArgs.push_back(arg.get()); | ||||||||
| 5910 | } | ||||||||
| 5911 | |||||||||
| 5912 | // Otherwise do argument promotion, (C99 6.5.2.2p7). | ||||||||
| 5913 | } else { | ||||||||
| 5914 | for (Expr *A : Args.slice(ArgIx)) { | ||||||||
| 5915 | ExprResult Arg = DefaultVariadicArgumentPromotion(A, CallType, FDecl); | ||||||||
| 5916 | Invalid |= Arg.isInvalid(); | ||||||||
| 5917 | AllArgs.push_back(Arg.get()); | ||||||||
| 5918 | } | ||||||||
| 5919 | } | ||||||||
| 5920 | |||||||||
| 5921 | // Check for array bounds violations. | ||||||||
| 5922 | for (Expr *A : Args.slice(ArgIx)) | ||||||||
| 5923 | CheckArrayAccess(A); | ||||||||
| 5924 | } | ||||||||
| 5925 | return Invalid; | ||||||||
| 5926 | } | ||||||||
| 5927 | |||||||||
| 5928 | static void DiagnoseCalleeStaticArrayParam(Sema &S, ParmVarDecl *PVD) { | ||||||||
| 5929 | TypeLoc TL = PVD->getTypeSourceInfo()->getTypeLoc(); | ||||||||
| 5930 | if (DecayedTypeLoc DTL = TL.getAs<DecayedTypeLoc>()) | ||||||||
| 5931 | TL = DTL.getOriginalLoc(); | ||||||||
| 5932 | if (ArrayTypeLoc ATL = TL.getAs<ArrayTypeLoc>()) | ||||||||
| 5933 | S.Diag(PVD->getLocation(), diag::note_callee_static_array) | ||||||||
| 5934 | << ATL.getLocalSourceRange(); | ||||||||
| 5935 | } | ||||||||
| 5936 | |||||||||
| 5937 | /// CheckStaticArrayArgument - If the given argument corresponds to a static | ||||||||
| 5938 | /// array parameter, check that it is non-null, and that if it is formed by | ||||||||
| 5939 | /// array-to-pointer decay, the underlying array is sufficiently large. | ||||||||
| 5940 | /// | ||||||||
| 5941 | /// C99 6.7.5.3p7: If the keyword static also appears within the [ and ] of the | ||||||||
| 5942 | /// array type derivation, then for each call to the function, the value of the | ||||||||
| 5943 | /// corresponding actual argument shall provide access to the first element of | ||||||||
| 5944 | /// an array with at least as many elements as specified by the size expression. | ||||||||
| 5945 | void | ||||||||
| 5946 | Sema::CheckStaticArrayArgument(SourceLocation CallLoc, | ||||||||
| 5947 | ParmVarDecl *Param, | ||||||||
| 5948 | const Expr *ArgExpr) { | ||||||||
| 5949 | // Static array parameters are not supported in C++. | ||||||||
| 5950 | if (!Param || getLangOpts().CPlusPlus) | ||||||||
| 5951 | return; | ||||||||
| 5952 | |||||||||
| 5953 | QualType OrigTy = Param->getOriginalType(); | ||||||||
| 5954 | |||||||||
| 5955 | const ArrayType *AT = Context.getAsArrayType(OrigTy); | ||||||||
| 5956 | if (!AT || AT->getSizeModifier() != ArrayType::Static) | ||||||||
| 5957 | return; | ||||||||
| 5958 | |||||||||
| 5959 | if (ArgExpr->isNullPointerConstant(Context, | ||||||||
| 5960 | Expr::NPC_NeverValueDependent)) { | ||||||||
| 5961 | Diag(CallLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); | ||||||||
| 5962 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||||||
| 5963 | return; | ||||||||
| 5964 | } | ||||||||
| 5965 | |||||||||
| 5966 | const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT); | ||||||||
| 5967 | if (!CAT) | ||||||||
| 5968 | return; | ||||||||
| 5969 | |||||||||
| 5970 | const ConstantArrayType *ArgCAT = | ||||||||
| 5971 | Context.getAsConstantArrayType(ArgExpr->IgnoreParenCasts()->getType()); | ||||||||
| 5972 | if (!ArgCAT) | ||||||||
| 5973 | return; | ||||||||
| 5974 | |||||||||
| 5975 | if (getASTContext().hasSameUnqualifiedType(CAT->getElementType(), | ||||||||
| 5976 | ArgCAT->getElementType())) { | ||||||||
| 5977 | if (ArgCAT->getSize().ult(CAT->getSize())) { | ||||||||
| 5978 | Diag(CallLoc, diag::warn_static_array_too_small) | ||||||||
| 5979 | << ArgExpr->getSourceRange() | ||||||||
| 5980 | << (unsigned)ArgCAT->getSize().getZExtValue() | ||||||||
| 5981 | << (unsigned)CAT->getSize().getZExtValue() << 0; | ||||||||
| 5982 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||||||
| 5983 | } | ||||||||
| 5984 | return; | ||||||||
| 5985 | } | ||||||||
| 5986 | |||||||||
| 5987 | Optional<CharUnits> ArgSize = | ||||||||
| 5988 | getASTContext().getTypeSizeInCharsIfKnown(ArgCAT); | ||||||||
| 5989 | Optional<CharUnits> ParmSize = getASTContext().getTypeSizeInCharsIfKnown(CAT); | ||||||||
| 5990 | if (ArgSize && ParmSize && *ArgSize < *ParmSize) { | ||||||||
| 5991 | Diag(CallLoc, diag::warn_static_array_too_small) | ||||||||
| 5992 | << ArgExpr->getSourceRange() << (unsigned)ArgSize->getQuantity() | ||||||||
| 5993 | << (unsigned)ParmSize->getQuantity() << 1; | ||||||||
| 5994 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||||||
| 5995 | } | ||||||||
| 5996 | } | ||||||||
| 5997 | |||||||||
| 5998 | /// Given a function expression of unknown-any type, try to rebuild it | ||||||||
| 5999 | /// to have a function type. | ||||||||
| 6000 | static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *fn); | ||||||||
| 6001 | |||||||||
| 6002 | /// Is the given type a placeholder that we need to lower out | ||||||||
| 6003 | /// immediately during argument processing? | ||||||||
| 6004 | static bool isPlaceholderToRemoveAsArg(QualType type) { | ||||||||
| 6005 | // Placeholders are never sugared. | ||||||||
| 6006 | const BuiltinType *placeholder = dyn_cast<BuiltinType>(type); | ||||||||
| 6007 | if (!placeholder) return false; | ||||||||
| 6008 | |||||||||
| 6009 | switch (placeholder->getKind()) { | ||||||||
| 6010 | // Ignore all the non-placeholder types. | ||||||||
| 6011 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
| 6012 | case BuiltinType::Id: | ||||||||
| 6013 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
| 6014 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
| 6015 | case BuiltinType::Id: | ||||||||
| 6016 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 6017 | // In practice we'll never use this, since all SVE types are sugared | ||||||||
| 6018 | // via TypedefTypes rather than exposed directly as BuiltinTypes. | ||||||||
| 6019 | #define SVE_TYPE(Name, Id, SingletonId) \ | ||||||||
| 6020 | case BuiltinType::Id: | ||||||||
| 6021 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||
| 6022 | #define PLACEHOLDER_TYPE(ID, SINGLETON_ID) | ||||||||
| 6023 | #define BUILTIN_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: | ||||||||
| 6024 | #include "clang/AST/BuiltinTypes.def" | ||||||||
| 6025 | return false; | ||||||||
| 6026 | |||||||||
| 6027 | // We cannot lower out overload sets; they might validly be resolved | ||||||||
| 6028 | // by the call machinery. | ||||||||
| 6029 | case BuiltinType::Overload: | ||||||||
| 6030 | return false; | ||||||||
| 6031 | |||||||||
| 6032 | // Unbridged casts in ARC can be handled in some call positions and | ||||||||
| 6033 | // should be left in place. | ||||||||
| 6034 | case BuiltinType::ARCUnbridgedCast: | ||||||||
| 6035 | return false; | ||||||||
| 6036 | |||||||||
| 6037 | // Pseudo-objects should be converted as soon as possible. | ||||||||
| 6038 | case BuiltinType::PseudoObject: | ||||||||
| 6039 | return true; | ||||||||
| 6040 | |||||||||
| 6041 | // The debugger mode could theoretically but currently does not try | ||||||||
| 6042 | // to resolve unknown-typed arguments based on known parameter types. | ||||||||
| 6043 | case BuiltinType::UnknownAny: | ||||||||
| 6044 | return true; | ||||||||
| 6045 | |||||||||
| 6046 | // These are always invalid as call arguments and should be reported. | ||||||||
| 6047 | case BuiltinType::BoundMember: | ||||||||
| 6048 | case BuiltinType::BuiltinFn: | ||||||||
| 6049 | case BuiltinType::IncompleteMatrixIdx: | ||||||||
| 6050 | case BuiltinType::OMPArraySection: | ||||||||
| 6051 | case BuiltinType::OMPArrayShaping: | ||||||||
| 6052 | case BuiltinType::OMPIterator: | ||||||||
| 6053 | return true; | ||||||||
| 6054 | |||||||||
| 6055 | } | ||||||||
| 6056 | llvm_unreachable("bad builtin type kind")::llvm::llvm_unreachable_internal("bad builtin type kind", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6056); | ||||||||
| 6057 | } | ||||||||
| 6058 | |||||||||
| 6059 | /// Check an argument list for placeholders that we won't try to | ||||||||
| 6060 | /// handle later. | ||||||||
| 6061 | static bool checkArgsForPlaceholders(Sema &S, MultiExprArg args) { | ||||||||
| 6062 | // Apply this processing to all the arguments at once instead of | ||||||||
| 6063 | // dying at the first failure. | ||||||||
| 6064 | bool hasInvalid = false; | ||||||||
| 6065 | for (size_t i = 0, e = args.size(); i != e; i++) { | ||||||||
| 6066 | if (isPlaceholderToRemoveAsArg(args[i]->getType())) { | ||||||||
| 6067 | ExprResult result = S.CheckPlaceholderExpr(args[i]); | ||||||||
| 6068 | if (result.isInvalid()) hasInvalid = true; | ||||||||
| 6069 | else args[i] = result.get(); | ||||||||
| 6070 | } else if (hasInvalid) { | ||||||||
| 6071 | (void)S.CorrectDelayedTyposInExpr(args[i]); | ||||||||
| 6072 | } | ||||||||
| 6073 | } | ||||||||
| 6074 | return hasInvalid; | ||||||||
| 6075 | } | ||||||||
| 6076 | |||||||||
| 6077 | /// If a builtin function has a pointer argument with no explicit address | ||||||||
| 6078 | /// space, then it should be able to accept a pointer to any address | ||||||||
| 6079 | /// space as input. In order to do this, we need to replace the | ||||||||
| 6080 | /// standard builtin declaration with one that uses the same address space | ||||||||
| 6081 | /// as the call. | ||||||||
| 6082 | /// | ||||||||
| 6083 | /// \returns nullptr If this builtin is not a candidate for a rewrite i.e. | ||||||||
| 6084 | /// it does not contain any pointer arguments without | ||||||||
| 6085 | /// an address space qualifer. Otherwise the rewritten | ||||||||
| 6086 | /// FunctionDecl is returned. | ||||||||
| 6087 | /// TODO: Handle pointer return types. | ||||||||
| 6088 | static FunctionDecl *rewriteBuiltinFunctionDecl(Sema *Sema, ASTContext &Context, | ||||||||
| 6089 | FunctionDecl *FDecl, | ||||||||
| 6090 | MultiExprArg ArgExprs) { | ||||||||
| 6091 | |||||||||
| 6092 | QualType DeclType = FDecl->getType(); | ||||||||
| 6093 | const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(DeclType); | ||||||||
| 6094 | |||||||||
| 6095 | if (!Context.BuiltinInfo.hasPtrArgsOrResult(FDecl->getBuiltinID()) || !FT || | ||||||||
| 6096 | ArgExprs.size() < FT->getNumParams()) | ||||||||
| 6097 | return nullptr; | ||||||||
| 6098 | |||||||||
| 6099 | bool NeedsNewDecl = false; | ||||||||
| 6100 | unsigned i = 0; | ||||||||
| 6101 | SmallVector<QualType, 8> OverloadParams; | ||||||||
| 6102 | |||||||||
| 6103 | for (QualType ParamType : FT->param_types()) { | ||||||||
| 6104 | |||||||||
| 6105 | // Convert array arguments to pointer to simplify type lookup. | ||||||||
| 6106 | ExprResult ArgRes = | ||||||||
| 6107 | Sema->DefaultFunctionArrayLvalueConversion(ArgExprs[i++]); | ||||||||
| 6108 | if (ArgRes.isInvalid()) | ||||||||
| 6109 | return nullptr; | ||||||||
| 6110 | Expr *Arg = ArgRes.get(); | ||||||||
| 6111 | QualType ArgType = Arg->getType(); | ||||||||
| 6112 | if (!ParamType->isPointerType() || | ||||||||
| 6113 | ParamType.hasAddressSpace() || | ||||||||
| 6114 | !ArgType->isPointerType() || | ||||||||
| 6115 | !ArgType->getPointeeType().hasAddressSpace()) { | ||||||||
| 6116 | OverloadParams.push_back(ParamType); | ||||||||
| 6117 | continue; | ||||||||
| 6118 | } | ||||||||
| 6119 | |||||||||
| 6120 | QualType PointeeType = ParamType->getPointeeType(); | ||||||||
| 6121 | if (PointeeType.hasAddressSpace()) | ||||||||
| 6122 | continue; | ||||||||
| 6123 | |||||||||
| 6124 | NeedsNewDecl = true; | ||||||||
| 6125 | LangAS AS = ArgType->getPointeeType().getAddressSpace(); | ||||||||
| 6126 | |||||||||
| 6127 | PointeeType = Context.getAddrSpaceQualType(PointeeType, AS); | ||||||||
| 6128 | OverloadParams.push_back(Context.getPointerType(PointeeType)); | ||||||||
| 6129 | } | ||||||||
| 6130 | |||||||||
| 6131 | if (!NeedsNewDecl) | ||||||||
| 6132 | return nullptr; | ||||||||
| 6133 | |||||||||
| 6134 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
| 6135 | EPI.Variadic = FT->isVariadic(); | ||||||||
| 6136 | QualType OverloadTy = Context.getFunctionType(FT->getReturnType(), | ||||||||
| 6137 | OverloadParams, EPI); | ||||||||
| 6138 | DeclContext *Parent = FDecl->getParent(); | ||||||||
| 6139 | FunctionDecl *OverloadDecl = FunctionDecl::Create(Context, Parent, | ||||||||
| 6140 | FDecl->getLocation(), | ||||||||
| 6141 | FDecl->getLocation(), | ||||||||
| 6142 | FDecl->getIdentifier(), | ||||||||
| 6143 | OverloadTy, | ||||||||
| 6144 | /*TInfo=*/nullptr, | ||||||||
| 6145 | SC_Extern, false, | ||||||||
| 6146 | /*hasPrototype=*/true); | ||||||||
| 6147 | SmallVector<ParmVarDecl*, 16> Params; | ||||||||
| 6148 | FT = cast<FunctionProtoType>(OverloadTy); | ||||||||
| 6149 | for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { | ||||||||
| 6150 | QualType ParamType = FT->getParamType(i); | ||||||||
| 6151 | ParmVarDecl *Parm = | ||||||||
| 6152 | ParmVarDecl::Create(Context, OverloadDecl, SourceLocation(), | ||||||||
| 6153 | SourceLocation(), nullptr, ParamType, | ||||||||
| 6154 | /*TInfo=*/nullptr, SC_None, nullptr); | ||||||||
| 6155 | Parm->setScopeInfo(0, i); | ||||||||
| 6156 | Params.push_back(Parm); | ||||||||
| 6157 | } | ||||||||
| 6158 | OverloadDecl->setParams(Params); | ||||||||
| 6159 | return OverloadDecl; | ||||||||
| 6160 | } | ||||||||
| 6161 | |||||||||
| 6162 | static void checkDirectCallValidity(Sema &S, const Expr *Fn, | ||||||||
| 6163 | FunctionDecl *Callee, | ||||||||
| 6164 | MultiExprArg ArgExprs) { | ||||||||
| 6165 | // `Callee` (when called with ArgExprs) may be ill-formed. enable_if (and | ||||||||
| 6166 | // similar attributes) really don't like it when functions are called with an | ||||||||
| 6167 | // invalid number of args. | ||||||||
| 6168 | if (S.TooManyArguments(Callee->getNumParams(), ArgExprs.size(), | ||||||||
| 6169 | /*PartialOverloading=*/false) && | ||||||||
| 6170 | !Callee->isVariadic()) | ||||||||
| 6171 | return; | ||||||||
| 6172 | if (Callee->getMinRequiredArguments() > ArgExprs.size()) | ||||||||
| 6173 | return; | ||||||||
| 6174 | |||||||||
| 6175 | if (const EnableIfAttr *Attr = | ||||||||
| 6176 | S.CheckEnableIf(Callee, Fn->getBeginLoc(), ArgExprs, true)) { | ||||||||
| 6177 | S.Diag(Fn->getBeginLoc(), | ||||||||
| 6178 | isa<CXXMethodDecl>(Callee) | ||||||||
| 6179 | ? diag::err_ovl_no_viable_member_function_in_call | ||||||||
| 6180 | : diag::err_ovl_no_viable_function_in_call) | ||||||||
| 6181 | << Callee << Callee->getSourceRange(); | ||||||||
| 6182 | S.Diag(Callee->getLocation(), | ||||||||
| 6183 | diag::note_ovl_candidate_disabled_by_function_cond_attr) | ||||||||
| 6184 | << Attr->getCond()->getSourceRange() << Attr->getMessage(); | ||||||||
| 6185 | return; | ||||||||
| 6186 | } | ||||||||
| 6187 | } | ||||||||
| 6188 | |||||||||
| 6189 | static bool enclosingClassIsRelatedToClassInWhichMembersWereFound( | ||||||||
| 6190 | const UnresolvedMemberExpr *const UME, Sema &S) { | ||||||||
| 6191 | |||||||||
| 6192 | const auto GetFunctionLevelDCIfCXXClass = | ||||||||
| 6193 | [](Sema &S) -> const CXXRecordDecl * { | ||||||||
| 6194 | const DeclContext *const DC = S.getFunctionLevelDeclContext(); | ||||||||
| 6195 | if (!DC || !DC->getParent()) | ||||||||
| 6196 | return nullptr; | ||||||||
| 6197 | |||||||||
| 6198 | // If the call to some member function was made from within a member | ||||||||
| 6199 | // function body 'M' return return 'M's parent. | ||||||||
| 6200 | if (const auto *MD = dyn_cast<CXXMethodDecl>(DC)) | ||||||||
| 6201 | return MD->getParent()->getCanonicalDecl(); | ||||||||
| 6202 | // else the call was made from within a default member initializer of a | ||||||||
| 6203 | // class, so return the class. | ||||||||
| 6204 | if (const auto *RD = dyn_cast<CXXRecordDecl>(DC)) | ||||||||
| 6205 | return RD->getCanonicalDecl(); | ||||||||
| 6206 | return nullptr; | ||||||||
| 6207 | }; | ||||||||
| 6208 | // If our DeclContext is neither a member function nor a class (in the | ||||||||
| 6209 | // case of a lambda in a default member initializer), we can't have an | ||||||||
| 6210 | // enclosing 'this'. | ||||||||
| 6211 | |||||||||
| 6212 | const CXXRecordDecl *const CurParentClass = GetFunctionLevelDCIfCXXClass(S); | ||||||||
| 6213 | if (!CurParentClass) | ||||||||
| 6214 | return false; | ||||||||
| 6215 | |||||||||
| 6216 | // The naming class for implicit member functions call is the class in which | ||||||||
| 6217 | // name lookup starts. | ||||||||
| 6218 | const CXXRecordDecl *const NamingClass = | ||||||||
| 6219 | UME->getNamingClass()->getCanonicalDecl(); | ||||||||
| 6220 | assert(NamingClass && "Must have naming class even for implicit access")((NamingClass && "Must have naming class even for implicit access" ) ? static_cast<void> (0) : __assert_fail ("NamingClass && \"Must have naming class even for implicit access\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6220, __PRETTY_FUNCTION__)); | ||||||||
| 6221 | |||||||||
| 6222 | // If the unresolved member functions were found in a 'naming class' that is | ||||||||
| 6223 | // related (either the same or derived from) to the class that contains the | ||||||||
| 6224 | // member function that itself contained the implicit member access. | ||||||||
| 6225 | |||||||||
| 6226 | return CurParentClass == NamingClass || | ||||||||
| 6227 | CurParentClass->isDerivedFrom(NamingClass); | ||||||||
| 6228 | } | ||||||||
| 6229 | |||||||||
| 6230 | static void | ||||||||
| 6231 | tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( | ||||||||
| 6232 | Sema &S, const UnresolvedMemberExpr *const UME, SourceLocation CallLoc) { | ||||||||
| 6233 | |||||||||
| 6234 | if (!UME) | ||||||||
| 6235 | return; | ||||||||
| 6236 | |||||||||
| 6237 | LambdaScopeInfo *const CurLSI = S.getCurLambda(); | ||||||||
| 6238 | // Only try and implicitly capture 'this' within a C++ Lambda if it hasn't | ||||||||
| 6239 | // already been captured, or if this is an implicit member function call (if | ||||||||
| 6240 | // it isn't, an attempt to capture 'this' should already have been made). | ||||||||
| 6241 | if (!CurLSI || CurLSI->ImpCaptureStyle == CurLSI->ImpCap_None || | ||||||||
| 6242 | !UME->isImplicitAccess() || CurLSI->isCXXThisCaptured()) | ||||||||
| 6243 | return; | ||||||||
| 6244 | |||||||||
| 6245 | // Check if the naming class in which the unresolved members were found is | ||||||||
| 6246 | // related (same as or is a base of) to the enclosing class. | ||||||||
| 6247 | |||||||||
| 6248 | if (!enclosingClassIsRelatedToClassInWhichMembersWereFound(UME, S)) | ||||||||
| 6249 | return; | ||||||||
| 6250 | |||||||||
| 6251 | |||||||||
| 6252 | DeclContext *EnclosingFunctionCtx = S.CurContext->getParent()->getParent(); | ||||||||
| 6253 | // If the enclosing function is not dependent, then this lambda is | ||||||||
| 6254 | // capture ready, so if we can capture this, do so. | ||||||||
| 6255 | if (!EnclosingFunctionCtx->isDependentContext()) { | ||||||||
| 6256 | // If the current lambda and all enclosing lambdas can capture 'this' - | ||||||||
| 6257 | // then go ahead and capture 'this' (since our unresolved overload set | ||||||||
| 6258 | // contains at least one non-static member function). | ||||||||
| 6259 | if (!S.CheckCXXThisCapture(CallLoc, /*Explcit*/ false, /*Diagnose*/ false)) | ||||||||
| 6260 | S.CheckCXXThisCapture(CallLoc); | ||||||||
| 6261 | } else if (S.CurContext->isDependentContext()) { | ||||||||
| 6262 | // ... since this is an implicit member reference, that might potentially | ||||||||
| 6263 | // involve a 'this' capture, mark 'this' for potential capture in | ||||||||
| 6264 | // enclosing lambdas. | ||||||||
| 6265 | if (CurLSI->ImpCaptureStyle != CurLSI->ImpCap_None) | ||||||||
| 6266 | CurLSI->addPotentialThisCapture(CallLoc); | ||||||||
| 6267 | } | ||||||||
| 6268 | } | ||||||||
| 6269 | |||||||||
| 6270 | ExprResult Sema::ActOnCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, | ||||||||
| 6271 | MultiExprArg ArgExprs, SourceLocation RParenLoc, | ||||||||
| 6272 | Expr *ExecConfig) { | ||||||||
| 6273 | ExprResult Call = | ||||||||
| 6274 | BuildCallExpr(Scope, Fn, LParenLoc, ArgExprs, RParenLoc, ExecConfig); | ||||||||
| 6275 | if (Call.isInvalid()) | ||||||||
| 6276 | return Call; | ||||||||
| 6277 | |||||||||
| 6278 | // Diagnose uses of the C++20 "ADL-only template-id call" feature in earlier | ||||||||
| 6279 | // language modes. | ||||||||
| 6280 | if (auto *ULE = dyn_cast<UnresolvedLookupExpr>(Fn)) { | ||||||||
| 6281 | if (ULE->hasExplicitTemplateArgs() && | ||||||||
| 6282 | ULE->decls_begin() == ULE->decls_end()) { | ||||||||
| 6283 | Diag(Fn->getExprLoc(), getLangOpts().CPlusPlus20 | ||||||||
| 6284 | ? diag::warn_cxx17_compat_adl_only_template_id | ||||||||
| 6285 | : diag::ext_adl_only_template_id) | ||||||||
| 6286 | << ULE->getName(); | ||||||||
| 6287 | } | ||||||||
| 6288 | } | ||||||||
| 6289 | |||||||||
| 6290 | if (LangOpts.OpenMP) | ||||||||
| 6291 | Call = ActOnOpenMPCall(Call, Scope, LParenLoc, ArgExprs, RParenLoc, | ||||||||
| 6292 | ExecConfig); | ||||||||
| 6293 | |||||||||
| 6294 | return Call; | ||||||||
| 6295 | } | ||||||||
| 6296 | |||||||||
| 6297 | /// BuildCallExpr - Handle a call to Fn with the specified array of arguments. | ||||||||
| 6298 | /// This provides the location of the left/right parens and a list of comma | ||||||||
| 6299 | /// locations. | ||||||||
| 6300 | ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, | ||||||||
| 6301 | MultiExprArg ArgExprs, SourceLocation RParenLoc, | ||||||||
| 6302 | Expr *ExecConfig, bool IsExecConfig) { | ||||||||
| 6303 | // Since this might be a postfix expression, get rid of ParenListExprs. | ||||||||
| 6304 | ExprResult Result = MaybeConvertParenListExprToParenExpr(Scope, Fn); | ||||||||
| 6305 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 6306 | Fn = Result.get(); | ||||||||
| 6307 | |||||||||
| 6308 | if (checkArgsForPlaceholders(*this, ArgExprs)) | ||||||||
| 6309 | return ExprError(); | ||||||||
| 6310 | |||||||||
| 6311 | if (getLangOpts().CPlusPlus) { | ||||||||
| 6312 | // If this is a pseudo-destructor expression, build the call immediately. | ||||||||
| 6313 | if (isa<CXXPseudoDestructorExpr>(Fn)) { | ||||||||
| 6314 | if (!ArgExprs.empty()) { | ||||||||
| 6315 | // Pseudo-destructor calls should not have any arguments. | ||||||||
| 6316 | Diag(Fn->getBeginLoc(), diag::err_pseudo_dtor_call_with_args) | ||||||||
| 6317 | << FixItHint::CreateRemoval( | ||||||||
| 6318 | SourceRange(ArgExprs.front()->getBeginLoc(), | ||||||||
| 6319 | ArgExprs.back()->getEndLoc())); | ||||||||
| 6320 | } | ||||||||
| 6321 | |||||||||
| 6322 | return CallExpr::Create(Context, Fn, /*Args=*/{}, Context.VoidTy, | ||||||||
| 6323 | VK_RValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
| 6324 | } | ||||||||
| 6325 | if (Fn->getType() == Context.PseudoObjectTy) { | ||||||||
| 6326 | ExprResult result = CheckPlaceholderExpr(Fn); | ||||||||
| 6327 | if (result.isInvalid()) return ExprError(); | ||||||||
| 6328 | Fn = result.get(); | ||||||||
| 6329 | } | ||||||||
| 6330 | |||||||||
| 6331 | // Determine whether this is a dependent call inside a C++ template, | ||||||||
| 6332 | // in which case we won't do any semantic analysis now. | ||||||||
| 6333 | if (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs)) { | ||||||||
| 6334 | if (ExecConfig) { | ||||||||
| 6335 | return CUDAKernelCallExpr::Create( | ||||||||
| 6336 | Context, Fn, cast<CallExpr>(ExecConfig), ArgExprs, | ||||||||
| 6337 | Context.DependentTy, VK_RValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
| 6338 | } else { | ||||||||
| 6339 | |||||||||
| 6340 | tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( | ||||||||
| 6341 | *this, dyn_cast<UnresolvedMemberExpr>(Fn->IgnoreParens()), | ||||||||
| 6342 | Fn->getBeginLoc()); | ||||||||
| 6343 | |||||||||
| 6344 | return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, | ||||||||
| 6345 | VK_RValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
| 6346 | } | ||||||||
| 6347 | } | ||||||||
| 6348 | |||||||||
| 6349 | // Determine whether this is a call to an object (C++ [over.call.object]). | ||||||||
| 6350 | if (Fn->getType()->isRecordType()) | ||||||||
| 6351 | return BuildCallToObjectOfClassType(Scope, Fn, LParenLoc, ArgExprs, | ||||||||
| 6352 | RParenLoc); | ||||||||
| 6353 | |||||||||
| 6354 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||||||
| 6355 | ExprResult result = rebuildUnknownAnyFunction(*this, Fn); | ||||||||
| 6356 | if (result.isInvalid()) return ExprError(); | ||||||||
| 6357 | Fn = result.get(); | ||||||||
| 6358 | } | ||||||||
| 6359 | |||||||||
| 6360 | if (Fn->getType() == Context.BoundMemberTy) { | ||||||||
| 6361 | return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, | ||||||||
| 6362 | RParenLoc); | ||||||||
| 6363 | } | ||||||||
| 6364 | } | ||||||||
| 6365 | |||||||||
| 6366 | // Check for overloaded calls. This can happen even in C due to extensions. | ||||||||
| 6367 | if (Fn->getType() == Context.OverloadTy) { | ||||||||
| 6368 | OverloadExpr::FindResult find = OverloadExpr::find(Fn); | ||||||||
| 6369 | |||||||||
| 6370 | // We aren't supposed to apply this logic if there's an '&' involved. | ||||||||
| 6371 | if (!find.HasFormOfMemberPointer) { | ||||||||
| 6372 | if (Expr::hasAnyTypeDependentArguments(ArgExprs)) | ||||||||
| 6373 | return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, | ||||||||
| 6374 | VK_RValue, RParenLoc, CurFPFeatureOverrides()); | ||||||||
| 6375 | OverloadExpr *ovl = find.Expression; | ||||||||
| 6376 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(ovl)) | ||||||||
| 6377 | return BuildOverloadedCallExpr( | ||||||||
| 6378 | Scope, Fn, ULE, LParenLoc, ArgExprs, RParenLoc, ExecConfig, | ||||||||
| 6379 | /*AllowTypoCorrection=*/true, find.IsAddressOfOperand); | ||||||||
| 6380 | return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, | ||||||||
| 6381 | RParenLoc); | ||||||||
| 6382 | } | ||||||||
| 6383 | } | ||||||||
| 6384 | |||||||||
| 6385 | // If we're directly calling a function, get the appropriate declaration. | ||||||||
| 6386 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||||||
| 6387 | ExprResult result = rebuildUnknownAnyFunction(*this, Fn); | ||||||||
| 6388 | if (result.isInvalid()) return ExprError(); | ||||||||
| 6389 | Fn = result.get(); | ||||||||
| 6390 | } | ||||||||
| 6391 | |||||||||
| 6392 | Expr *NakedFn = Fn->IgnoreParens(); | ||||||||
| 6393 | |||||||||
| 6394 | bool CallingNDeclIndirectly = false; | ||||||||
| 6395 | NamedDecl *NDecl = nullptr; | ||||||||
| 6396 | if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(NakedFn)) { | ||||||||
| 6397 | if (UnOp->getOpcode() == UO_AddrOf) { | ||||||||
| 6398 | CallingNDeclIndirectly = true; | ||||||||
| 6399 | NakedFn = UnOp->getSubExpr()->IgnoreParens(); | ||||||||
| 6400 | } | ||||||||
| 6401 | } | ||||||||
| 6402 | |||||||||
| 6403 | if (auto *DRE = dyn_cast<DeclRefExpr>(NakedFn)) { | ||||||||
| 6404 | NDecl = DRE->getDecl(); | ||||||||
| 6405 | |||||||||
| 6406 | FunctionDecl *FDecl = dyn_cast<FunctionDecl>(NDecl); | ||||||||
| 6407 | if (FDecl && FDecl->getBuiltinID()) { | ||||||||
| 6408 | // Rewrite the function decl for this builtin by replacing parameters | ||||||||
| 6409 | // with no explicit address space with the address space of the arguments | ||||||||
| 6410 | // in ArgExprs. | ||||||||
| 6411 | if ((FDecl = | ||||||||
| 6412 | rewriteBuiltinFunctionDecl(this, Context, FDecl, ArgExprs))) { | ||||||||
| 6413 | NDecl = FDecl; | ||||||||
| 6414 | Fn = DeclRefExpr::Create( | ||||||||
| 6415 | Context, FDecl->getQualifierLoc(), SourceLocation(), FDecl, false, | ||||||||
| 6416 | SourceLocation(), FDecl->getType(), Fn->getValueKind(), FDecl, | ||||||||
| 6417 | nullptr, DRE->isNonOdrUse()); | ||||||||
| 6418 | } | ||||||||
| 6419 | } | ||||||||
| 6420 | } else if (isa<MemberExpr>(NakedFn)) | ||||||||
| 6421 | NDecl = cast<MemberExpr>(NakedFn)->getMemberDecl(); | ||||||||
| 6422 | |||||||||
| 6423 | if (FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(NDecl)) { | ||||||||
| 6424 | if (CallingNDeclIndirectly && !checkAddressOfFunctionIsAvailable( | ||||||||
| 6425 | FD, /*Complain=*/true, Fn->getBeginLoc())) | ||||||||
| 6426 | return ExprError(); | ||||||||
| 6427 | |||||||||
| 6428 | if (getLangOpts().OpenCL && checkOpenCLDisabledDecl(*FD, *Fn)) | ||||||||
| 6429 | return ExprError(); | ||||||||
| 6430 | |||||||||
| 6431 | checkDirectCallValidity(*this, Fn, FD, ArgExprs); | ||||||||
| 6432 | } | ||||||||
| 6433 | |||||||||
| 6434 | return BuildResolvedCallExpr(Fn, NDecl, LParenLoc, ArgExprs, RParenLoc, | ||||||||
| 6435 | ExecConfig, IsExecConfig); | ||||||||
| 6436 | } | ||||||||
| 6437 | |||||||||
| 6438 | /// ActOnAsTypeExpr - create a new asType (bitcast) from the arguments. | ||||||||
| 6439 | /// | ||||||||
| 6440 | /// __builtin_astype( value, dst type ) | ||||||||
| 6441 | /// | ||||||||
| 6442 | ExprResult Sema::ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, | ||||||||
| 6443 | SourceLocation BuiltinLoc, | ||||||||
| 6444 | SourceLocation RParenLoc) { | ||||||||
| 6445 | ExprValueKind VK = VK_RValue; | ||||||||
| 6446 | ExprObjectKind OK = OK_Ordinary; | ||||||||
| 6447 | QualType DstTy = GetTypeFromParser(ParsedDestTy); | ||||||||
| 6448 | QualType SrcTy = E->getType(); | ||||||||
| 6449 | if (Context.getTypeSize(DstTy) != Context.getTypeSize(SrcTy)) | ||||||||
| 6450 | return ExprError(Diag(BuiltinLoc, | ||||||||
| 6451 | diag::err_invalid_astype_of_different_size) | ||||||||
| 6452 | << DstTy | ||||||||
| 6453 | << SrcTy | ||||||||
| 6454 | << E->getSourceRange()); | ||||||||
| 6455 | return new (Context) AsTypeExpr(E, DstTy, VK, OK, BuiltinLoc, RParenLoc); | ||||||||
| 6456 | } | ||||||||
| 6457 | |||||||||
| 6458 | /// ActOnConvertVectorExpr - create a new convert-vector expression from the | ||||||||
| 6459 | /// provided arguments. | ||||||||
| 6460 | /// | ||||||||
| 6461 | /// __builtin_convertvector( value, dst type ) | ||||||||
| 6462 | /// | ||||||||
| 6463 | ExprResult Sema::ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, | ||||||||
| 6464 | SourceLocation BuiltinLoc, | ||||||||
| 6465 | SourceLocation RParenLoc) { | ||||||||
| 6466 | TypeSourceInfo *TInfo; | ||||||||
| 6467 | GetTypeFromParser(ParsedDestTy, &TInfo); | ||||||||
| 6468 | return SemaConvertVectorExpr(E, TInfo, BuiltinLoc, RParenLoc); | ||||||||
| 6469 | } | ||||||||
| 6470 | |||||||||
| 6471 | /// BuildResolvedCallExpr - Build a call to a resolved expression, | ||||||||
| 6472 | /// i.e. an expression not of \p OverloadTy. The expression should | ||||||||
| 6473 | /// unary-convert to an expression of function-pointer or | ||||||||
| 6474 | /// block-pointer type. | ||||||||
| 6475 | /// | ||||||||
| 6476 | /// \param NDecl the declaration being called, if available | ||||||||
| 6477 | ExprResult Sema::BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, | ||||||||
| 6478 | SourceLocation LParenLoc, | ||||||||
| 6479 | ArrayRef<Expr *> Args, | ||||||||
| 6480 | SourceLocation RParenLoc, Expr *Config, | ||||||||
| 6481 | bool IsExecConfig, ADLCallKind UsesADL) { | ||||||||
| 6482 | FunctionDecl *FDecl = dyn_cast_or_null<FunctionDecl>(NDecl); | ||||||||
| 6483 | unsigned BuiltinID = (FDecl ? FDecl->getBuiltinID() : 0); | ||||||||
| 6484 | |||||||||
| 6485 | // Functions with 'interrupt' attribute cannot be called directly. | ||||||||
| 6486 | if (FDecl && FDecl->hasAttr<AnyX86InterruptAttr>()) { | ||||||||
| 6487 | Diag(Fn->getExprLoc(), diag::err_anyx86_interrupt_called); | ||||||||
| 6488 | return ExprError(); | ||||||||
| 6489 | } | ||||||||
| 6490 | |||||||||
| 6491 | // Interrupt handlers don't save off the VFP regs automatically on ARM, | ||||||||
| 6492 | // so there's some risk when calling out to non-interrupt handler functions | ||||||||
| 6493 | // that the callee might not preserve them. This is easy to diagnose here, | ||||||||
| 6494 | // but can be very challenging to debug. | ||||||||
| 6495 | if (auto *Caller = getCurFunctionDecl()) | ||||||||
| 6496 | if (Caller->hasAttr<ARMInterruptAttr>()) { | ||||||||
| 6497 | bool VFP = Context.getTargetInfo().hasFeature("vfp"); | ||||||||
| 6498 | if (VFP && (!FDecl || !FDecl->hasAttr<ARMInterruptAttr>())) | ||||||||
| 6499 | Diag(Fn->getExprLoc(), diag::warn_arm_interrupt_calling_convention); | ||||||||
| 6500 | } | ||||||||
| 6501 | |||||||||
| 6502 | // Promote the function operand. | ||||||||
| 6503 | // We special-case function promotion here because we only allow promoting | ||||||||
| 6504 | // builtin functions to function pointers in the callee of a call. | ||||||||
| 6505 | ExprResult Result; | ||||||||
| 6506 | QualType ResultTy; | ||||||||
| 6507 | if (BuiltinID && | ||||||||
| 6508 | Fn->getType()->isSpecificBuiltinType(BuiltinType::BuiltinFn)) { | ||||||||
| 6509 | // Extract the return type from the (builtin) function pointer type. | ||||||||
| 6510 | // FIXME Several builtins still have setType in | ||||||||
| 6511 | // Sema::CheckBuiltinFunctionCall. One should review their definitions in | ||||||||
| 6512 | // Builtins.def to ensure they are correct before removing setType calls. | ||||||||
| 6513 | QualType FnPtrTy = Context.getPointerType(FDecl->getType()); | ||||||||
| 6514 | Result = ImpCastExprToType(Fn, FnPtrTy, CK_BuiltinFnToFnPtr).get(); | ||||||||
| 6515 | ResultTy = FDecl->getCallResultType(); | ||||||||
| 6516 | } else { | ||||||||
| 6517 | Result = CallExprUnaryConversions(Fn); | ||||||||
| 6518 | ResultTy = Context.BoolTy; | ||||||||
| 6519 | } | ||||||||
| 6520 | if (Result.isInvalid()) | ||||||||
| 6521 | return ExprError(); | ||||||||
| 6522 | Fn = Result.get(); | ||||||||
| 6523 | |||||||||
| 6524 | // Check for a valid function type, but only if it is not a builtin which | ||||||||
| 6525 | // requires custom type checking. These will be handled by | ||||||||
| 6526 | // CheckBuiltinFunctionCall below just after creation of the call expression. | ||||||||
| 6527 | const FunctionType *FuncT = nullptr; | ||||||||
| 6528 | if (!BuiltinID || !Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) { | ||||||||
| 6529 | retry: | ||||||||
| 6530 | if (const PointerType *PT = Fn->getType()->getAs<PointerType>()) { | ||||||||
| 6531 | // C99 6.5.2.2p1 - "The expression that denotes the called function shall | ||||||||
| 6532 | // have type pointer to function". | ||||||||
| 6533 | FuncT = PT->getPointeeType()->getAs<FunctionType>(); | ||||||||
| 6534 | if (!FuncT) | ||||||||
| 6535 | return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) | ||||||||
| 6536 | << Fn->getType() << Fn->getSourceRange()); | ||||||||
| 6537 | } else if (const BlockPointerType *BPT = | ||||||||
| 6538 | Fn->getType()->getAs<BlockPointerType>()) { | ||||||||
| 6539 | FuncT = BPT->getPointeeType()->castAs<FunctionType>(); | ||||||||
| 6540 | } else { | ||||||||
| 6541 | // Handle calls to expressions of unknown-any type. | ||||||||
| 6542 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||||||
| 6543 | ExprResult rewrite = rebuildUnknownAnyFunction(*this, Fn); | ||||||||
| 6544 | if (rewrite.isInvalid()) | ||||||||
| 6545 | return ExprError(); | ||||||||
| 6546 | Fn = rewrite.get(); | ||||||||
| 6547 | goto retry; | ||||||||
| 6548 | } | ||||||||
| 6549 | |||||||||
| 6550 | return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) | ||||||||
| 6551 | << Fn->getType() << Fn->getSourceRange()); | ||||||||
| 6552 | } | ||||||||
| 6553 | } | ||||||||
| 6554 | |||||||||
| 6555 | // Get the number of parameters in the function prototype, if any. | ||||||||
| 6556 | // We will allocate space for max(Args.size(), NumParams) arguments | ||||||||
| 6557 | // in the call expression. | ||||||||
| 6558 | const auto *Proto = dyn_cast_or_null<FunctionProtoType>(FuncT); | ||||||||
| 6559 | unsigned NumParams = Proto ? Proto->getNumParams() : 0; | ||||||||
| 6560 | |||||||||
| 6561 | CallExpr *TheCall; | ||||||||
| 6562 | if (Config) { | ||||||||
| 6563 | assert(UsesADL == ADLCallKind::NotADL &&((UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL" ) ? static_cast<void> (0) : __assert_fail ("UsesADL == ADLCallKind::NotADL && \"CUDAKernelCallExpr should not use ADL\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6564, __PRETTY_FUNCTION__)) | ||||||||
| 6564 | "CUDAKernelCallExpr should not use ADL")((UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL" ) ? static_cast<void> (0) : __assert_fail ("UsesADL == ADLCallKind::NotADL && \"CUDAKernelCallExpr should not use ADL\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6564, __PRETTY_FUNCTION__)); | ||||||||
| 6565 | TheCall = CUDAKernelCallExpr::Create(Context, Fn, cast<CallExpr>(Config), | ||||||||
| 6566 | Args, ResultTy, VK_RValue, RParenLoc, | ||||||||
| 6567 | CurFPFeatureOverrides(), NumParams); | ||||||||
| 6568 | } else { | ||||||||
| 6569 | TheCall = | ||||||||
| 6570 | CallExpr::Create(Context, Fn, Args, ResultTy, VK_RValue, RParenLoc, | ||||||||
| 6571 | CurFPFeatureOverrides(), NumParams, UsesADL); | ||||||||
| 6572 | } | ||||||||
| 6573 | |||||||||
| 6574 | if (!getLangOpts().CPlusPlus) { | ||||||||
| 6575 | // Forget about the nulled arguments since typo correction | ||||||||
| 6576 | // do not handle them well. | ||||||||
| 6577 | TheCall->shrinkNumArgs(Args.size()); | ||||||||
| 6578 | // C cannot always handle TypoExpr nodes in builtin calls and direct | ||||||||
| 6579 | // function calls as their argument checking don't necessarily handle | ||||||||
| 6580 | // dependent types properly, so make sure any TypoExprs have been | ||||||||
| 6581 | // dealt with. | ||||||||
| 6582 | ExprResult Result = CorrectDelayedTyposInExpr(TheCall); | ||||||||
| 6583 | if (!Result.isUsable()) return ExprError(); | ||||||||
| 6584 | CallExpr *TheOldCall = TheCall; | ||||||||
| 6585 | TheCall = dyn_cast<CallExpr>(Result.get()); | ||||||||
| 6586 | bool CorrectedTypos = TheCall != TheOldCall; | ||||||||
| 6587 | if (!TheCall) return Result; | ||||||||
| 6588 | Args = llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()); | ||||||||
| 6589 | |||||||||
| 6590 | // A new call expression node was created if some typos were corrected. | ||||||||
| 6591 | // However it may not have been constructed with enough storage. In this | ||||||||
| 6592 | // case, rebuild the node with enough storage. The waste of space is | ||||||||
| 6593 | // immaterial since this only happens when some typos were corrected. | ||||||||
| 6594 | if (CorrectedTypos && Args.size() < NumParams) { | ||||||||
| 6595 | if (Config) | ||||||||
| 6596 | TheCall = CUDAKernelCallExpr::Create( | ||||||||
| 6597 | Context, Fn, cast<CallExpr>(Config), Args, ResultTy, VK_RValue, | ||||||||
| 6598 | RParenLoc, CurFPFeatureOverrides(), NumParams); | ||||||||
| 6599 | else | ||||||||
| 6600 | TheCall = | ||||||||
| 6601 | CallExpr::Create(Context, Fn, Args, ResultTy, VK_RValue, RParenLoc, | ||||||||
| 6602 | CurFPFeatureOverrides(), NumParams, UsesADL); | ||||||||
| 6603 | } | ||||||||
| 6604 | // We can now handle the nulled arguments for the default arguments. | ||||||||
| 6605 | TheCall->setNumArgsUnsafe(std::max<unsigned>(Args.size(), NumParams)); | ||||||||
| 6606 | } | ||||||||
| 6607 | |||||||||
| 6608 | // Bail out early if calling a builtin with custom type checking. | ||||||||
| 6609 | if (BuiltinID && Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) | ||||||||
| 6610 | return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); | ||||||||
| 6611 | |||||||||
| 6612 | if (getLangOpts().CUDA) { | ||||||||
| 6613 | if (Config) { | ||||||||
| 6614 | // CUDA: Kernel calls must be to global functions | ||||||||
| 6615 | if (FDecl && !FDecl->hasAttr<CUDAGlobalAttr>()) | ||||||||
| 6616 | return ExprError(Diag(LParenLoc,diag::err_kern_call_not_global_function) | ||||||||
| 6617 | << FDecl << Fn->getSourceRange()); | ||||||||
| 6618 | |||||||||
| 6619 | // CUDA: Kernel function must have 'void' return type | ||||||||
| 6620 | if (!FuncT->getReturnType()->isVoidType() && | ||||||||
| 6621 | !FuncT->getReturnType()->getAs<AutoType>() && | ||||||||
| 6622 | !FuncT->getReturnType()->isInstantiationDependentType()) | ||||||||
| 6623 | return ExprError(Diag(LParenLoc, diag::err_kern_type_not_void_return) | ||||||||
| 6624 | << Fn->getType() << Fn->getSourceRange()); | ||||||||
| 6625 | } else { | ||||||||
| 6626 | // CUDA: Calls to global functions must be configured | ||||||||
| 6627 | if (FDecl && FDecl->hasAttr<CUDAGlobalAttr>()) | ||||||||
| 6628 | return ExprError(Diag(LParenLoc, diag::err_global_call_not_config) | ||||||||
| 6629 | << FDecl << Fn->getSourceRange()); | ||||||||
| 6630 | } | ||||||||
| 6631 | } | ||||||||
| 6632 | |||||||||
| 6633 | // Check for a valid return type | ||||||||
| 6634 | if (CheckCallReturnType(FuncT->getReturnType(), Fn->getBeginLoc(), TheCall, | ||||||||
| 6635 | FDecl)) | ||||||||
| 6636 | return ExprError(); | ||||||||
| 6637 | |||||||||
| 6638 | // We know the result type of the call, set it. | ||||||||
| 6639 | TheCall->setType(FuncT->getCallResultType(Context)); | ||||||||
| 6640 | TheCall->setValueKind(Expr::getValueKindForType(FuncT->getReturnType())); | ||||||||
| 6641 | |||||||||
| 6642 | if (Proto) { | ||||||||
| 6643 | if (ConvertArgumentsForCall(TheCall, Fn, FDecl, Proto, Args, RParenLoc, | ||||||||
| 6644 | IsExecConfig)) | ||||||||
| 6645 | return ExprError(); | ||||||||
| 6646 | } else { | ||||||||
| 6647 | assert(isa<FunctionNoProtoType>(FuncT) && "Unknown FunctionType!")((isa<FunctionNoProtoType>(FuncT) && "Unknown FunctionType!" ) ? static_cast<void> (0) : __assert_fail ("isa<FunctionNoProtoType>(FuncT) && \"Unknown FunctionType!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6647, __PRETTY_FUNCTION__)); | ||||||||
| 6648 | |||||||||
| 6649 | if (FDecl) { | ||||||||
| 6650 | // Check if we have too few/too many template arguments, based | ||||||||
| 6651 | // on our knowledge of the function definition. | ||||||||
| 6652 | const FunctionDecl *Def = nullptr; | ||||||||
| 6653 | if (FDecl->hasBody(Def) && Args.size() != Def->param_size()) { | ||||||||
| 6654 | Proto = Def->getType()->getAs<FunctionProtoType>(); | ||||||||
| 6655 | if (!Proto || !(Proto->isVariadic() && Args.size() >= Def->param_size())) | ||||||||
| 6656 | Diag(RParenLoc, diag::warn_call_wrong_number_of_arguments) | ||||||||
| 6657 | << (Args.size() > Def->param_size()) << FDecl << Fn->getSourceRange(); | ||||||||
| 6658 | } | ||||||||
| 6659 | |||||||||
| 6660 | // If the function we're calling isn't a function prototype, but we have | ||||||||
| 6661 | // a function prototype from a prior declaratiom, use that prototype. | ||||||||
| 6662 | if (!FDecl->hasPrototype()) | ||||||||
| 6663 | Proto = FDecl->getType()->getAs<FunctionProtoType>(); | ||||||||
| 6664 | } | ||||||||
| 6665 | |||||||||
| 6666 | // Promote the arguments (C99 6.5.2.2p6). | ||||||||
| 6667 | for (unsigned i = 0, e = Args.size(); i != e; i++) { | ||||||||
| 6668 | Expr *Arg = Args[i]; | ||||||||
| 6669 | |||||||||
| 6670 | if (Proto && i < Proto->getNumParams()) { | ||||||||
| 6671 | InitializedEntity Entity = InitializedEntity::InitializeParameter( | ||||||||
| 6672 | Context, Proto->getParamType(i), Proto->isParamConsumed(i)); | ||||||||
| 6673 | ExprResult ArgE = | ||||||||
| 6674 | PerformCopyInitialization(Entity, SourceLocation(), Arg); | ||||||||
| 6675 | if (ArgE.isInvalid()) | ||||||||
| 6676 | return true; | ||||||||
| 6677 | |||||||||
| 6678 | Arg = ArgE.getAs<Expr>(); | ||||||||
| 6679 | |||||||||
| 6680 | } else { | ||||||||
| 6681 | ExprResult ArgE = DefaultArgumentPromotion(Arg); | ||||||||
| 6682 | |||||||||
| 6683 | if (ArgE.isInvalid()) | ||||||||
| 6684 | return true; | ||||||||
| 6685 | |||||||||
| 6686 | Arg = ArgE.getAs<Expr>(); | ||||||||
| 6687 | } | ||||||||
| 6688 | |||||||||
| 6689 | if (RequireCompleteType(Arg->getBeginLoc(), Arg->getType(), | ||||||||
| 6690 | diag::err_call_incomplete_argument, Arg)) | ||||||||
| 6691 | return ExprError(); | ||||||||
| 6692 | |||||||||
| 6693 | TheCall->setArg(i, Arg); | ||||||||
| 6694 | } | ||||||||
| 6695 | } | ||||||||
| 6696 | |||||||||
| 6697 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl)) | ||||||||
| 6698 | if (!Method->isStatic()) | ||||||||
| 6699 | return ExprError(Diag(LParenLoc, diag::err_member_call_without_object) | ||||||||
| 6700 | << Fn->getSourceRange()); | ||||||||
| 6701 | |||||||||
| 6702 | // Check for sentinels | ||||||||
| 6703 | if (NDecl) | ||||||||
| 6704 | DiagnoseSentinelCalls(NDecl, LParenLoc, Args); | ||||||||
| 6705 | |||||||||
| 6706 | // Warn for unions passing across security boundary (CMSE). | ||||||||
| 6707 | if (FuncT != nullptr && FuncT->getCmseNSCallAttr()) { | ||||||||
| 6708 | for (unsigned i = 0, e = Args.size(); i != e; i++) { | ||||||||
| 6709 | if (const auto *RT = | ||||||||
| 6710 | dyn_cast<RecordType>(Args[i]->getType().getCanonicalType())) { | ||||||||
| 6711 | if (RT->getDecl()->isOrContainsUnion()) | ||||||||
| 6712 | Diag(Args[i]->getBeginLoc(), diag::warn_cmse_nonsecure_union) | ||||||||
| 6713 | << 0 << i; | ||||||||
| 6714 | } | ||||||||
| 6715 | } | ||||||||
| 6716 | } | ||||||||
| 6717 | |||||||||
| 6718 | // Do special checking on direct calls to functions. | ||||||||
| 6719 | if (FDecl) { | ||||||||
| 6720 | if (CheckFunctionCall(FDecl, TheCall, Proto)) | ||||||||
| 6721 | return ExprError(); | ||||||||
| 6722 | |||||||||
| 6723 | checkFortifiedBuiltinMemoryFunction(FDecl, TheCall); | ||||||||
| 6724 | |||||||||
| 6725 | if (BuiltinID) | ||||||||
| 6726 | return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); | ||||||||
| 6727 | } else if (NDecl) { | ||||||||
| 6728 | if (CheckPointerCall(NDecl, TheCall, Proto)) | ||||||||
| 6729 | return ExprError(); | ||||||||
| 6730 | } else { | ||||||||
| 6731 | if (CheckOtherCall(TheCall, Proto)) | ||||||||
| 6732 | return ExprError(); | ||||||||
| 6733 | } | ||||||||
| 6734 | |||||||||
| 6735 | return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), FDecl); | ||||||||
| 6736 | } | ||||||||
| 6737 | |||||||||
| 6738 | ExprResult | ||||||||
| 6739 | Sema::ActOnCompoundLiteral(SourceLocation LParenLoc, ParsedType Ty, | ||||||||
| 6740 | SourceLocation RParenLoc, Expr *InitExpr) { | ||||||||
| 6741 | assert(Ty && "ActOnCompoundLiteral(): missing type")((Ty && "ActOnCompoundLiteral(): missing type") ? static_cast <void> (0) : __assert_fail ("Ty && \"ActOnCompoundLiteral(): missing type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6741, __PRETTY_FUNCTION__)); | ||||||||
| 6742 | assert(InitExpr && "ActOnCompoundLiteral(): missing expression")((InitExpr && "ActOnCompoundLiteral(): missing expression" ) ? static_cast<void> (0) : __assert_fail ("InitExpr && \"ActOnCompoundLiteral(): missing expression\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6742, __PRETTY_FUNCTION__)); | ||||||||
| 6743 | |||||||||
| 6744 | TypeSourceInfo *TInfo; | ||||||||
| 6745 | QualType literalType = GetTypeFromParser(Ty, &TInfo); | ||||||||
| 6746 | if (!TInfo) | ||||||||
| 6747 | TInfo = Context.getTrivialTypeSourceInfo(literalType); | ||||||||
| 6748 | |||||||||
| 6749 | return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, InitExpr); | ||||||||
| 6750 | } | ||||||||
| 6751 | |||||||||
| 6752 | ExprResult | ||||||||
| 6753 | Sema::BuildCompoundLiteralExpr(SourceLocation LParenLoc, TypeSourceInfo *TInfo, | ||||||||
| 6754 | SourceLocation RParenLoc, Expr *LiteralExpr) { | ||||||||
| 6755 | QualType literalType = TInfo->getType(); | ||||||||
| 6756 | |||||||||
| 6757 | if (literalType->isArrayType()) { | ||||||||
| 6758 | if (RequireCompleteSizedType( | ||||||||
| 6759 | LParenLoc, Context.getBaseElementType(literalType), | ||||||||
| 6760 | diag::err_array_incomplete_or_sizeless_type, | ||||||||
| 6761 | SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) | ||||||||
| 6762 | return ExprError(); | ||||||||
| 6763 | if (literalType->isVariableArrayType()) | ||||||||
| 6764 | return ExprError(Diag(LParenLoc, diag::err_variable_object_no_init) | ||||||||
| 6765 | << SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd())); | ||||||||
| 6766 | } else if (!literalType->isDependentType() && | ||||||||
| 6767 | RequireCompleteType(LParenLoc, literalType, | ||||||||
| 6768 | diag::err_typecheck_decl_incomplete_type, | ||||||||
| 6769 | SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) | ||||||||
| 6770 | return ExprError(); | ||||||||
| 6771 | |||||||||
| 6772 | InitializedEntity Entity | ||||||||
| 6773 | = InitializedEntity::InitializeCompoundLiteralInit(TInfo); | ||||||||
| 6774 | InitializationKind Kind | ||||||||
| 6775 | = InitializationKind::CreateCStyleCast(LParenLoc, | ||||||||
| 6776 | SourceRange(LParenLoc, RParenLoc), | ||||||||
| 6777 | /*InitList=*/true); | ||||||||
| 6778 | InitializationSequence InitSeq(*this, Entity, Kind, LiteralExpr); | ||||||||
| 6779 | ExprResult Result = InitSeq.Perform(*this, Entity, Kind, LiteralExpr, | ||||||||
| 6780 | &literalType); | ||||||||
| 6781 | if (Result.isInvalid()) | ||||||||
| 6782 | return ExprError(); | ||||||||
| 6783 | LiteralExpr = Result.get(); | ||||||||
| 6784 | |||||||||
| 6785 | bool isFileScope = !CurContext->isFunctionOrMethod(); | ||||||||
| 6786 | |||||||||
| 6787 | // In C, compound literals are l-values for some reason. | ||||||||
| 6788 | // For GCC compatibility, in C++, file-scope array compound literals with | ||||||||
| 6789 | // constant initializers are also l-values, and compound literals are | ||||||||
| 6790 | // otherwise prvalues. | ||||||||
| 6791 | // | ||||||||
| 6792 | // (GCC also treats C++ list-initialized file-scope array prvalues with | ||||||||
| 6793 | // constant initializers as l-values, but that's non-conforming, so we don't | ||||||||
| 6794 | // follow it there.) | ||||||||
| 6795 | // | ||||||||
| 6796 | // FIXME: It would be better to handle the lvalue cases as materializing and | ||||||||
| 6797 | // lifetime-extending a temporary object, but our materialized temporaries | ||||||||
| 6798 | // representation only supports lifetime extension from a variable, not "out | ||||||||
| 6799 | // of thin air". | ||||||||
| 6800 | // FIXME: For C++, we might want to instead lifetime-extend only if a pointer | ||||||||
| 6801 | // is bound to the result of applying array-to-pointer decay to the compound | ||||||||
| 6802 | // literal. | ||||||||
| 6803 | // FIXME: GCC supports compound literals of reference type, which should | ||||||||
| 6804 | // obviously have a value kind derived from the kind of reference involved. | ||||||||
| 6805 | ExprValueKind VK = | ||||||||
| 6806 | (getLangOpts().CPlusPlus && !(isFileScope && literalType->isArrayType())) | ||||||||
| 6807 | ? VK_RValue | ||||||||
| 6808 | : VK_LValue; | ||||||||
| 6809 | |||||||||
| 6810 | if (isFileScope) | ||||||||
| 6811 | if (auto ILE = dyn_cast<InitListExpr>(LiteralExpr)) | ||||||||
| 6812 | for (unsigned i = 0, j = ILE->getNumInits(); i != j; i++) { | ||||||||
| 6813 | Expr *Init = ILE->getInit(i); | ||||||||
| 6814 | ILE->setInit(i, ConstantExpr::Create(Context, Init)); | ||||||||
| 6815 | } | ||||||||
| 6816 | |||||||||
| 6817 | auto *E = new (Context) CompoundLiteralExpr(LParenLoc, TInfo, literalType, | ||||||||
| 6818 | VK, LiteralExpr, isFileScope); | ||||||||
| 6819 | if (isFileScope) { | ||||||||
| 6820 | if (!LiteralExpr->isTypeDependent() && | ||||||||
| 6821 | !LiteralExpr->isValueDependent() && | ||||||||
| 6822 | !literalType->isDependentType()) // C99 6.5.2.5p3 | ||||||||
| 6823 | if (CheckForConstantInitializer(LiteralExpr, literalType)) | ||||||||
| 6824 | return ExprError(); | ||||||||
| 6825 | } else if (literalType.getAddressSpace() != LangAS::opencl_private && | ||||||||
| 6826 | literalType.getAddressSpace() != LangAS::Default) { | ||||||||
| 6827 | // Embedded-C extensions to C99 6.5.2.5: | ||||||||
| 6828 | // "If the compound literal occurs inside the body of a function, the | ||||||||
| 6829 | // type name shall not be qualified by an address-space qualifier." | ||||||||
| 6830 | Diag(LParenLoc, diag::err_compound_literal_with_address_space) | ||||||||
| 6831 | << SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()); | ||||||||
| 6832 | return ExprError(); | ||||||||
| 6833 | } | ||||||||
| 6834 | |||||||||
| 6835 | if (!isFileScope && !getLangOpts().CPlusPlus) { | ||||||||
| 6836 | // Compound literals that have automatic storage duration are destroyed at | ||||||||
| 6837 | // the end of the scope in C; in C++, they're just temporaries. | ||||||||
| 6838 | |||||||||
| 6839 | // Emit diagnostics if it is or contains a C union type that is non-trivial | ||||||||
| 6840 | // to destruct. | ||||||||
| 6841 | if (E->getType().hasNonTrivialToPrimitiveDestructCUnion()) | ||||||||
| 6842 | checkNonTrivialCUnion(E->getType(), E->getExprLoc(), | ||||||||
| 6843 | NTCUC_CompoundLiteral, NTCUK_Destruct); | ||||||||
| 6844 | |||||||||
| 6845 | // Diagnose jumps that enter or exit the lifetime of the compound literal. | ||||||||
| 6846 | if (literalType.isDestructedType()) { | ||||||||
| 6847 | Cleanup.setExprNeedsCleanups(true); | ||||||||
| 6848 | ExprCleanupObjects.push_back(E); | ||||||||
| 6849 | getCurFunction()->setHasBranchProtectedScope(); | ||||||||
| 6850 | } | ||||||||
| 6851 | } | ||||||||
| 6852 | |||||||||
| 6853 | if (E->getType().hasNonTrivialToPrimitiveDefaultInitializeCUnion() || | ||||||||
| 6854 | E->getType().hasNonTrivialToPrimitiveCopyCUnion()) | ||||||||
| 6855 | checkNonTrivialCUnionInInitializer(E->getInitializer(), | ||||||||
| 6856 | E->getInitializer()->getExprLoc()); | ||||||||
| 6857 | |||||||||
| 6858 | return MaybeBindToTemporary(E); | ||||||||
| 6859 | } | ||||||||
| 6860 | |||||||||
| 6861 | ExprResult | ||||||||
| 6862 | Sema::ActOnInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, | ||||||||
| 6863 | SourceLocation RBraceLoc) { | ||||||||
| 6864 | // Only produce each kind of designated initialization diagnostic once. | ||||||||
| 6865 | SourceLocation FirstDesignator; | ||||||||
| 6866 | bool DiagnosedArrayDesignator = false; | ||||||||
| 6867 | bool DiagnosedNestedDesignator = false; | ||||||||
| 6868 | bool DiagnosedMixedDesignator = false; | ||||||||
| 6869 | |||||||||
| 6870 | // Check that any designated initializers are syntactically valid in the | ||||||||
| 6871 | // current language mode. | ||||||||
| 6872 | for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { | ||||||||
| 6873 | if (auto *DIE = dyn_cast<DesignatedInitExpr>(InitArgList[I])) { | ||||||||
| 6874 | if (FirstDesignator.isInvalid()) | ||||||||
| 6875 | FirstDesignator = DIE->getBeginLoc(); | ||||||||
| 6876 | |||||||||
| 6877 | if (!getLangOpts().CPlusPlus) | ||||||||
| 6878 | break; | ||||||||
| 6879 | |||||||||
| 6880 | if (!DiagnosedNestedDesignator && DIE->size() > 1) { | ||||||||
| 6881 | DiagnosedNestedDesignator = true; | ||||||||
| 6882 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_nested) | ||||||||
| 6883 | << DIE->getDesignatorsSourceRange(); | ||||||||
| 6884 | } | ||||||||
| 6885 | |||||||||
| 6886 | for (auto &Desig : DIE->designators()) { | ||||||||
| 6887 | if (!Desig.isFieldDesignator() && !DiagnosedArrayDesignator) { | ||||||||
| 6888 | DiagnosedArrayDesignator = true; | ||||||||
| 6889 | Diag(Desig.getBeginLoc(), diag::ext_designated_init_array) | ||||||||
| 6890 | << Desig.getSourceRange(); | ||||||||
| 6891 | } | ||||||||
| 6892 | } | ||||||||
| 6893 | |||||||||
| 6894 | if (!DiagnosedMixedDesignator && | ||||||||
| 6895 | !isa<DesignatedInitExpr>(InitArgList[0])) { | ||||||||
| 6896 | DiagnosedMixedDesignator = true; | ||||||||
| 6897 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) | ||||||||
| 6898 | << DIE->getSourceRange(); | ||||||||
| 6899 | Diag(InitArgList[0]->getBeginLoc(), diag::note_designated_init_mixed) | ||||||||
| 6900 | << InitArgList[0]->getSourceRange(); | ||||||||
| 6901 | } | ||||||||
| 6902 | } else if (getLangOpts().CPlusPlus && !DiagnosedMixedDesignator && | ||||||||
| 6903 | isa<DesignatedInitExpr>(InitArgList[0])) { | ||||||||
| 6904 | DiagnosedMixedDesignator = true; | ||||||||
| 6905 | auto *DIE = cast<DesignatedInitExpr>(InitArgList[0]); | ||||||||
| 6906 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) | ||||||||
| 6907 | << DIE->getSourceRange(); | ||||||||
| 6908 | Diag(InitArgList[I]->getBeginLoc(), diag::note_designated_init_mixed) | ||||||||
| 6909 | << InitArgList[I]->getSourceRange(); | ||||||||
| 6910 | } | ||||||||
| 6911 | } | ||||||||
| 6912 | |||||||||
| 6913 | if (FirstDesignator.isValid()) { | ||||||||
| 6914 | // Only diagnose designated initiaization as a C++20 extension if we didn't | ||||||||
| 6915 | // already diagnose use of (non-C++20) C99 designator syntax. | ||||||||
| 6916 | if (getLangOpts().CPlusPlus && !DiagnosedArrayDesignator && | ||||||||
| 6917 | !DiagnosedNestedDesignator && !DiagnosedMixedDesignator) { | ||||||||
| 6918 | Diag(FirstDesignator, getLangOpts().CPlusPlus20 | ||||||||
| 6919 | ? diag::warn_cxx17_compat_designated_init | ||||||||
| 6920 | : diag::ext_cxx_designated_init); | ||||||||
| 6921 | } else if (!getLangOpts().CPlusPlus && !getLangOpts().C99) { | ||||||||
| 6922 | Diag(FirstDesignator, diag::ext_designated_init); | ||||||||
| 6923 | } | ||||||||
| 6924 | } | ||||||||
| 6925 | |||||||||
| 6926 | return BuildInitList(LBraceLoc, InitArgList, RBraceLoc); | ||||||||
| 6927 | } | ||||||||
| 6928 | |||||||||
| 6929 | ExprResult | ||||||||
| 6930 | Sema::BuildInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, | ||||||||
| 6931 | SourceLocation RBraceLoc) { | ||||||||
| 6932 | // Semantic analysis for initializers is done by ActOnDeclarator() and | ||||||||
| 6933 | // CheckInitializer() - it requires knowledge of the object being initialized. | ||||||||
| 6934 | |||||||||
| 6935 | // Immediately handle non-overload placeholders. Overloads can be | ||||||||
| 6936 | // resolved contextually, but everything else here can't. | ||||||||
| 6937 | for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { | ||||||||
| 6938 | if (InitArgList[I]->getType()->isNonOverloadPlaceholderType()) { | ||||||||
| 6939 | ExprResult result = CheckPlaceholderExpr(InitArgList[I]); | ||||||||
| 6940 | |||||||||
| 6941 | // Ignore failures; dropping the entire initializer list because | ||||||||
| 6942 | // of one failure would be terrible for indexing/etc. | ||||||||
| 6943 | if (result.isInvalid()) continue; | ||||||||
| 6944 | |||||||||
| 6945 | InitArgList[I] = result.get(); | ||||||||
| 6946 | } | ||||||||
| 6947 | } | ||||||||
| 6948 | |||||||||
| 6949 | InitListExpr *E = new (Context) InitListExpr(Context, LBraceLoc, InitArgList, | ||||||||
| 6950 | RBraceLoc); | ||||||||
| 6951 | E->setType(Context.VoidTy); // FIXME: just a place holder for now. | ||||||||
| 6952 | return E; | ||||||||
| 6953 | } | ||||||||
| 6954 | |||||||||
| 6955 | /// Do an explicit extend of the given block pointer if we're in ARC. | ||||||||
| 6956 | void Sema::maybeExtendBlockObject(ExprResult &E) { | ||||||||
| 6957 | assert(E.get()->getType()->isBlockPointerType())((E.get()->getType()->isBlockPointerType()) ? static_cast <void> (0) : __assert_fail ("E.get()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6957, __PRETTY_FUNCTION__)); | ||||||||
| 6958 | assert(E.get()->isRValue())((E.get()->isRValue()) ? static_cast<void> (0) : __assert_fail ("E.get()->isRValue()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6958, __PRETTY_FUNCTION__)); | ||||||||
| 6959 | |||||||||
| 6960 | // Only do this in an r-value context. | ||||||||
| 6961 | if (!getLangOpts().ObjCAutoRefCount) return; | ||||||||
| 6962 | |||||||||
| 6963 | E = ImplicitCastExpr::Create(Context, E.get()->getType(), | ||||||||
| 6964 | CK_ARCExtendBlockObject, E.get(), | ||||||||
| 6965 | /*base path*/ nullptr, VK_RValue); | ||||||||
| 6966 | Cleanup.setExprNeedsCleanups(true); | ||||||||
| 6967 | } | ||||||||
| 6968 | |||||||||
| 6969 | /// Prepare a conversion of the given expression to an ObjC object | ||||||||
| 6970 | /// pointer type. | ||||||||
| 6971 | CastKind Sema::PrepareCastToObjCObjectPointer(ExprResult &E) { | ||||||||
| 6972 | QualType type = E.get()->getType(); | ||||||||
| 6973 | if (type->isObjCObjectPointerType()) { | ||||||||
| 6974 | return CK_BitCast; | ||||||||
| 6975 | } else if (type->isBlockPointerType()) { | ||||||||
| 6976 | maybeExtendBlockObject(E); | ||||||||
| 6977 | return CK_BlockPointerToObjCPointerCast; | ||||||||
| 6978 | } else { | ||||||||
| 6979 | assert(type->isPointerType())((type->isPointerType()) ? static_cast<void> (0) : __assert_fail ("type->isPointerType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6979, __PRETTY_FUNCTION__)); | ||||||||
| 6980 | return CK_CPointerToObjCPointerCast; | ||||||||
| 6981 | } | ||||||||
| 6982 | } | ||||||||
| 6983 | |||||||||
| 6984 | /// Prepares for a scalar cast, performing all the necessary stages | ||||||||
| 6985 | /// except the final cast and returning the kind required. | ||||||||
| 6986 | CastKind Sema::PrepareScalarCast(ExprResult &Src, QualType DestTy) { | ||||||||
| 6987 | // Both Src and Dest are scalar types, i.e. arithmetic or pointer. | ||||||||
| 6988 | // Also, callers should have filtered out the invalid cases with | ||||||||
| 6989 | // pointers. Everything else should be possible. | ||||||||
| 6990 | |||||||||
| 6991 | QualType SrcTy = Src.get()->getType(); | ||||||||
| 6992 | if (Context.hasSameUnqualifiedType(SrcTy, DestTy)) | ||||||||
| 6993 | return CK_NoOp; | ||||||||
| 6994 | |||||||||
| 6995 | switch (Type::ScalarTypeKind SrcKind = SrcTy->getScalarTypeKind()) { | ||||||||
| 6996 | case Type::STK_MemberPointer: | ||||||||
| 6997 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 6997); | ||||||||
| 6998 | |||||||||
| 6999 | case Type::STK_CPointer: | ||||||||
| 7000 | case Type::STK_BlockPointer: | ||||||||
| 7001 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7002 | switch (DestTy->getScalarTypeKind()) { | ||||||||
| 7003 | case Type::STK_CPointer: { | ||||||||
| 7004 | LangAS SrcAS = SrcTy->getPointeeType().getAddressSpace(); | ||||||||
| 7005 | LangAS DestAS = DestTy->getPointeeType().getAddressSpace(); | ||||||||
| 7006 | if (SrcAS != DestAS) | ||||||||
| 7007 | return CK_AddressSpaceConversion; | ||||||||
| 7008 | if (Context.hasCvrSimilarType(SrcTy, DestTy)) | ||||||||
| 7009 | return CK_NoOp; | ||||||||
| 7010 | return CK_BitCast; | ||||||||
| 7011 | } | ||||||||
| 7012 | case Type::STK_BlockPointer: | ||||||||
| 7013 | return (SrcKind == Type::STK_BlockPointer | ||||||||
| 7014 | ? CK_BitCast : CK_AnyPointerToBlockPointerCast); | ||||||||
| 7015 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7016 | if (SrcKind == Type::STK_ObjCObjectPointer) | ||||||||
| 7017 | return CK_BitCast; | ||||||||
| 7018 | if (SrcKind == Type::STK_CPointer) | ||||||||
| 7019 | return CK_CPointerToObjCPointerCast; | ||||||||
| 7020 | maybeExtendBlockObject(Src); | ||||||||
| 7021 | return CK_BlockPointerToObjCPointerCast; | ||||||||
| 7022 | case Type::STK_Bool: | ||||||||
| 7023 | return CK_PointerToBoolean; | ||||||||
| 7024 | case Type::STK_Integral: | ||||||||
| 7025 | return CK_PointerToIntegral; | ||||||||
| 7026 | case Type::STK_Floating: | ||||||||
| 7027 | case Type::STK_FloatingComplex: | ||||||||
| 7028 | case Type::STK_IntegralComplex: | ||||||||
| 7029 | case Type::STK_MemberPointer: | ||||||||
| 7030 | case Type::STK_FixedPoint: | ||||||||
| 7031 | llvm_unreachable("illegal cast from pointer")::llvm::llvm_unreachable_internal("illegal cast from pointer" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7031); | ||||||||
| 7032 | } | ||||||||
| 7033 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7033); | ||||||||
| 7034 | |||||||||
| 7035 | case Type::STK_FixedPoint: | ||||||||
| 7036 | switch (DestTy->getScalarTypeKind()) { | ||||||||
| 7037 | case Type::STK_FixedPoint: | ||||||||
| 7038 | return CK_FixedPointCast; | ||||||||
| 7039 | case Type::STK_Bool: | ||||||||
| 7040 | return CK_FixedPointToBoolean; | ||||||||
| 7041 | case Type::STK_Integral: | ||||||||
| 7042 | return CK_FixedPointToIntegral; | ||||||||
| 7043 | case Type::STK_Floating: | ||||||||
| 7044 | case Type::STK_IntegralComplex: | ||||||||
| 7045 | case Type::STK_FloatingComplex: | ||||||||
| 7046 | Diag(Src.get()->getExprLoc(), | ||||||||
| 7047 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
| 7048 | << DestTy; | ||||||||
| 7049 | return CK_IntegralCast; | ||||||||
| 7050 | case Type::STK_CPointer: | ||||||||
| 7051 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7052 | case Type::STK_BlockPointer: | ||||||||
| 7053 | case Type::STK_MemberPointer: | ||||||||
| 7054 | llvm_unreachable("illegal cast to pointer type")::llvm::llvm_unreachable_internal("illegal cast to pointer type" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7054); | ||||||||
| 7055 | } | ||||||||
| 7056 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7056); | ||||||||
| 7057 | |||||||||
| 7058 | case Type::STK_Bool: // casting from bool is like casting from an integer | ||||||||
| 7059 | case Type::STK_Integral: | ||||||||
| 7060 | switch (DestTy->getScalarTypeKind()) { | ||||||||
| 7061 | case Type::STK_CPointer: | ||||||||
| 7062 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7063 | case Type::STK_BlockPointer: | ||||||||
| 7064 | if (Src.get()->isNullPointerConstant(Context, | ||||||||
| 7065 | Expr::NPC_ValueDependentIsNull)) | ||||||||
| 7066 | return CK_NullToPointer; | ||||||||
| 7067 | return CK_IntegralToPointer; | ||||||||
| 7068 | case Type::STK_Bool: | ||||||||
| 7069 | return CK_IntegralToBoolean; | ||||||||
| 7070 | case Type::STK_Integral: | ||||||||
| 7071 | return CK_IntegralCast; | ||||||||
| 7072 | case Type::STK_Floating: | ||||||||
| 7073 | return CK_IntegralToFloating; | ||||||||
| 7074 | case Type::STK_IntegralComplex: | ||||||||
| 7075 | Src = ImpCastExprToType(Src.get(), | ||||||||
| 7076 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
| 7077 | CK_IntegralCast); | ||||||||
| 7078 | return CK_IntegralRealToComplex; | ||||||||
| 7079 | case Type::STK_FloatingComplex: | ||||||||
| 7080 | Src = ImpCastExprToType(Src.get(), | ||||||||
| 7081 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
| 7082 | CK_IntegralToFloating); | ||||||||
| 7083 | return CK_FloatingRealToComplex; | ||||||||
| 7084 | case Type::STK_MemberPointer: | ||||||||
| 7085 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7085); | ||||||||
| 7086 | case Type::STK_FixedPoint: | ||||||||
| 7087 | return CK_IntegralToFixedPoint; | ||||||||
| 7088 | } | ||||||||
| 7089 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7089); | ||||||||
| 7090 | |||||||||
| 7091 | case Type::STK_Floating: | ||||||||
| 7092 | switch (DestTy->getScalarTypeKind()) { | ||||||||
| 7093 | case Type::STK_Floating: | ||||||||
| 7094 | return CK_FloatingCast; | ||||||||
| 7095 | case Type::STK_Bool: | ||||||||
| 7096 | return CK_FloatingToBoolean; | ||||||||
| 7097 | case Type::STK_Integral: | ||||||||
| 7098 | return CK_FloatingToIntegral; | ||||||||
| 7099 | case Type::STK_FloatingComplex: | ||||||||
| 7100 | Src = ImpCastExprToType(Src.get(), | ||||||||
| 7101 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
| 7102 | CK_FloatingCast); | ||||||||
| 7103 | return CK_FloatingRealToComplex; | ||||||||
| 7104 | case Type::STK_IntegralComplex: | ||||||||
| 7105 | Src = ImpCastExprToType(Src.get(), | ||||||||
| 7106 | DestTy->castAs<ComplexType>()->getElementType(), | ||||||||
| 7107 | CK_FloatingToIntegral); | ||||||||
| 7108 | return CK_IntegralRealToComplex; | ||||||||
| 7109 | case Type::STK_CPointer: | ||||||||
| 7110 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7111 | case Type::STK_BlockPointer: | ||||||||
| 7112 | llvm_unreachable("valid float->pointer cast?")::llvm::llvm_unreachable_internal("valid float->pointer cast?" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7112); | ||||||||
| 7113 | case Type::STK_MemberPointer: | ||||||||
| 7114 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7114); | ||||||||
| 7115 | case Type::STK_FixedPoint: | ||||||||
| 7116 | Diag(Src.get()->getExprLoc(), | ||||||||
| 7117 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
| 7118 | << SrcTy; | ||||||||
| 7119 | return CK_IntegralCast; | ||||||||
| 7120 | } | ||||||||
| 7121 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7121); | ||||||||
| 7122 | |||||||||
| 7123 | case Type::STK_FloatingComplex: | ||||||||
| 7124 | switch (DestTy->getScalarTypeKind()) { | ||||||||
| 7125 | case Type::STK_FloatingComplex: | ||||||||
| 7126 | return CK_FloatingComplexCast; | ||||||||
| 7127 | case Type::STK_IntegralComplex: | ||||||||
| 7128 | return CK_FloatingComplexToIntegralComplex; | ||||||||
| 7129 | case Type::STK_Floating: { | ||||||||
| 7130 | QualType ET = SrcTy->castAs<ComplexType>()->getElementType(); | ||||||||
| 7131 | if (Context.hasSameType(ET, DestTy)) | ||||||||
| 7132 | return CK_FloatingComplexToReal; | ||||||||
| 7133 | Src = ImpCastExprToType(Src.get(), ET, CK_FloatingComplexToReal); | ||||||||
| 7134 | return CK_FloatingCast; | ||||||||
| 7135 | } | ||||||||
| 7136 | case Type::STK_Bool: | ||||||||
| 7137 | return CK_FloatingComplexToBoolean; | ||||||||
| 7138 | case Type::STK_Integral: | ||||||||
| 7139 | Src = ImpCastExprToType(Src.get(), | ||||||||
| 7140 | SrcTy->castAs<ComplexType>()->getElementType(), | ||||||||
| 7141 | CK_FloatingComplexToReal); | ||||||||
| 7142 | return CK_FloatingToIntegral; | ||||||||
| 7143 | case Type::STK_CPointer: | ||||||||
| 7144 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7145 | case Type::STK_BlockPointer: | ||||||||
| 7146 | llvm_unreachable("valid complex float->pointer cast?")::llvm::llvm_unreachable_internal("valid complex float->pointer cast?" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7146); | ||||||||
| 7147 | case Type::STK_MemberPointer: | ||||||||
| 7148 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7148); | ||||||||
| 7149 | case Type::STK_FixedPoint: | ||||||||
| 7150 | Diag(Src.get()->getExprLoc(), | ||||||||
| 7151 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
| 7152 | << SrcTy; | ||||||||
| 7153 | return CK_IntegralCast; | ||||||||
| 7154 | } | ||||||||
| 7155 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7155); | ||||||||
| 7156 | |||||||||
| 7157 | case Type::STK_IntegralComplex: | ||||||||
| 7158 | switch (DestTy->getScalarTypeKind()) { | ||||||||
| 7159 | case Type::STK_FloatingComplex: | ||||||||
| 7160 | return CK_IntegralComplexToFloatingComplex; | ||||||||
| 7161 | case Type::STK_IntegralComplex: | ||||||||
| 7162 | return CK_IntegralComplexCast; | ||||||||
| 7163 | case Type::STK_Integral: { | ||||||||
| 7164 | QualType ET = SrcTy->castAs<ComplexType>()->getElementType(); | ||||||||
| 7165 | if (Context.hasSameType(ET, DestTy)) | ||||||||
| 7166 | return CK_IntegralComplexToReal; | ||||||||
| 7167 | Src = ImpCastExprToType(Src.get(), ET, CK_IntegralComplexToReal); | ||||||||
| 7168 | return CK_IntegralCast; | ||||||||
| 7169 | } | ||||||||
| 7170 | case Type::STK_Bool: | ||||||||
| 7171 | return CK_IntegralComplexToBoolean; | ||||||||
| 7172 | case Type::STK_Floating: | ||||||||
| 7173 | Src = ImpCastExprToType(Src.get(), | ||||||||
| 7174 | SrcTy->castAs<ComplexType>()->getElementType(), | ||||||||
| 7175 | CK_IntegralComplexToReal); | ||||||||
| 7176 | return CK_IntegralToFloating; | ||||||||
| 7177 | case Type::STK_CPointer: | ||||||||
| 7178 | case Type::STK_ObjCObjectPointer: | ||||||||
| 7179 | case Type::STK_BlockPointer: | ||||||||
| 7180 | llvm_unreachable("valid complex int->pointer cast?")::llvm::llvm_unreachable_internal("valid complex int->pointer cast?" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7180); | ||||||||
| 7181 | case Type::STK_MemberPointer: | ||||||||
| 7182 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7182); | ||||||||
| 7183 | case Type::STK_FixedPoint: | ||||||||
| 7184 | Diag(Src.get()->getExprLoc(), | ||||||||
| 7185 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||||||
| 7186 | << SrcTy; | ||||||||
| 7187 | return CK_IntegralCast; | ||||||||
| 7188 | } | ||||||||
| 7189 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7189); | ||||||||
| 7190 | } | ||||||||
| 7191 | |||||||||
| 7192 | llvm_unreachable("Unhandled scalar cast")::llvm::llvm_unreachable_internal("Unhandled scalar cast", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7192); | ||||||||
| 7193 | } | ||||||||
| 7194 | |||||||||
| 7195 | static bool breakDownVectorType(QualType type, uint64_t &len, | ||||||||
| 7196 | QualType &eltType) { | ||||||||
| 7197 | // Vectors are simple. | ||||||||
| 7198 | if (const VectorType *vecType = type->getAs<VectorType>()) { | ||||||||
| 7199 | len = vecType->getNumElements(); | ||||||||
| 7200 | eltType = vecType->getElementType(); | ||||||||
| 7201 | assert(eltType->isScalarType())((eltType->isScalarType()) ? static_cast<void> (0) : __assert_fail ("eltType->isScalarType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7201, __PRETTY_FUNCTION__)); | ||||||||
| 7202 | return true; | ||||||||
| 7203 | } | ||||||||
| 7204 | |||||||||
| 7205 | // We allow lax conversion to and from non-vector types, but only if | ||||||||
| 7206 | // they're real types (i.e. non-complex, non-pointer scalar types). | ||||||||
| 7207 | if (!type->isRealType()) return false; | ||||||||
| 7208 | |||||||||
| 7209 | len = 1; | ||||||||
| 7210 | eltType = type; | ||||||||
| 7211 | return true; | ||||||||
| 7212 | } | ||||||||
| 7213 | |||||||||
| 7214 | /// Are the two types lax-compatible vector types? That is, given | ||||||||
| 7215 | /// that one of them is a vector, do they have equal storage sizes, | ||||||||
| 7216 | /// where the storage size is the number of elements times the element | ||||||||
| 7217 | /// size? | ||||||||
| 7218 | /// | ||||||||
| 7219 | /// This will also return false if either of the types is neither a | ||||||||
| 7220 | /// vector nor a real type. | ||||||||
| 7221 | bool Sema::areLaxCompatibleVectorTypes(QualType srcTy, QualType destTy) { | ||||||||
| 7222 | assert(destTy->isVectorType() || srcTy->isVectorType())((destTy->isVectorType() || srcTy->isVectorType()) ? static_cast <void> (0) : __assert_fail ("destTy->isVectorType() || srcTy->isVectorType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7222, __PRETTY_FUNCTION__)); | ||||||||
| 7223 | |||||||||
| 7224 | // Disallow lax conversions between scalars and ExtVectors (these | ||||||||
| 7225 | // conversions are allowed for other vector types because common headers | ||||||||
| 7226 | // depend on them). Most scalar OP ExtVector cases are handled by the | ||||||||
| 7227 | // splat path anyway, which does what we want (convert, not bitcast). | ||||||||
| 7228 | // What this rules out for ExtVectors is crazy things like char4*float. | ||||||||
| 7229 | if (srcTy->isScalarType() && destTy->isExtVectorType()) return false; | ||||||||
| 7230 | if (destTy->isScalarType() && srcTy->isExtVectorType()) return false; | ||||||||
| 7231 | |||||||||
| 7232 | uint64_t srcLen, destLen; | ||||||||
| 7233 | QualType srcEltTy, destEltTy; | ||||||||
| 7234 | if (!breakDownVectorType(srcTy, srcLen, srcEltTy)) return false; | ||||||||
| 7235 | if (!breakDownVectorType(destTy, destLen, destEltTy)) return false; | ||||||||
| 7236 | |||||||||
| 7237 | // ASTContext::getTypeSize will return the size rounded up to a | ||||||||
| 7238 | // power of 2, so instead of using that, we need to use the raw | ||||||||
| 7239 | // element size multiplied by the element count. | ||||||||
| 7240 | uint64_t srcEltSize = Context.getTypeSize(srcEltTy); | ||||||||
| 7241 | uint64_t destEltSize = Context.getTypeSize(destEltTy); | ||||||||
| 7242 | |||||||||
| 7243 | return (srcLen * srcEltSize == destLen * destEltSize); | ||||||||
| 7244 | } | ||||||||
| 7245 | |||||||||
| 7246 | /// Is this a legal conversion between two types, one of which is | ||||||||
| 7247 | /// known to be a vector type? | ||||||||
| 7248 | bool Sema::isLaxVectorConversion(QualType srcTy, QualType destTy) { | ||||||||
| 7249 | assert(destTy->isVectorType() || srcTy->isVectorType())((destTy->isVectorType() || srcTy->isVectorType()) ? static_cast <void> (0) : __assert_fail ("destTy->isVectorType() || srcTy->isVectorType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7249, __PRETTY_FUNCTION__)); | ||||||||
| 7250 | |||||||||
| 7251 | switch (Context.getLangOpts().getLaxVectorConversions()) { | ||||||||
| 7252 | case LangOptions::LaxVectorConversionKind::None: | ||||||||
| 7253 | return false; | ||||||||
| 7254 | |||||||||
| 7255 | case LangOptions::LaxVectorConversionKind::Integer: | ||||||||
| 7256 | if (!srcTy->isIntegralOrEnumerationType()) { | ||||||||
| 7257 | auto *Vec = srcTy->getAs<VectorType>(); | ||||||||
| 7258 | if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) | ||||||||
| 7259 | return false; | ||||||||
| 7260 | } | ||||||||
| 7261 | if (!destTy->isIntegralOrEnumerationType()) { | ||||||||
| 7262 | auto *Vec = destTy->getAs<VectorType>(); | ||||||||
| 7263 | if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) | ||||||||
| 7264 | return false; | ||||||||
| 7265 | } | ||||||||
| 7266 | // OK, integer (vector) -> integer (vector) bitcast. | ||||||||
| 7267 | break; | ||||||||
| 7268 | |||||||||
| 7269 | case LangOptions::LaxVectorConversionKind::All: | ||||||||
| 7270 | break; | ||||||||
| 7271 | } | ||||||||
| 7272 | |||||||||
| 7273 | return areLaxCompatibleVectorTypes(srcTy, destTy); | ||||||||
| 7274 | } | ||||||||
| 7275 | |||||||||
| 7276 | bool Sema::CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, | ||||||||
| 7277 | CastKind &Kind) { | ||||||||
| 7278 | assert(VectorTy->isVectorType() && "Not a vector type!")((VectorTy->isVectorType() && "Not a vector type!" ) ? static_cast<void> (0) : __assert_fail ("VectorTy->isVectorType() && \"Not a vector type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7278, __PRETTY_FUNCTION__)); | ||||||||
| 7279 | |||||||||
| 7280 | if (Ty->isVectorType() || Ty->isIntegralType(Context)) { | ||||||||
| 7281 | if (!areLaxCompatibleVectorTypes(Ty, VectorTy)) | ||||||||
| 7282 | return Diag(R.getBegin(), | ||||||||
| 7283 | Ty->isVectorType() ? | ||||||||
| 7284 | diag::err_invalid_conversion_between_vectors : | ||||||||
| 7285 | diag::err_invalid_conversion_between_vector_and_integer) | ||||||||
| 7286 | << VectorTy << Ty << R; | ||||||||
| 7287 | } else | ||||||||
| 7288 | return Diag(R.getBegin(), | ||||||||
| 7289 | diag::err_invalid_conversion_between_vector_and_scalar) | ||||||||
| 7290 | << VectorTy << Ty << R; | ||||||||
| 7291 | |||||||||
| 7292 | Kind = CK_BitCast; | ||||||||
| 7293 | return false; | ||||||||
| 7294 | } | ||||||||
| 7295 | |||||||||
| 7296 | ExprResult Sema::prepareVectorSplat(QualType VectorTy, Expr *SplattedExpr) { | ||||||||
| 7297 | QualType DestElemTy = VectorTy->castAs<VectorType>()->getElementType(); | ||||||||
| 7298 | |||||||||
| 7299 | if (DestElemTy == SplattedExpr->getType()) | ||||||||
| 7300 | return SplattedExpr; | ||||||||
| 7301 | |||||||||
| 7302 | assert(DestElemTy->isFloatingType() ||((DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType ()) ? static_cast<void> (0) : __assert_fail ("DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7303, __PRETTY_FUNCTION__)) | ||||||||
| 7303 | DestElemTy->isIntegralOrEnumerationType())((DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType ()) ? static_cast<void> (0) : __assert_fail ("DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7303, __PRETTY_FUNCTION__)); | ||||||||
| 7304 | |||||||||
| 7305 | CastKind CK; | ||||||||
| 7306 | if (VectorTy->isExtVectorType() && SplattedExpr->getType()->isBooleanType()) { | ||||||||
| 7307 | // OpenCL requires that we convert `true` boolean expressions to -1, but | ||||||||
| 7308 | // only when splatting vectors. | ||||||||
| 7309 | if (DestElemTy->isFloatingType()) { | ||||||||
| 7310 | // To avoid having to have a CK_BooleanToSignedFloating cast kind, we cast | ||||||||
| 7311 | // in two steps: boolean to signed integral, then to floating. | ||||||||
| 7312 | ExprResult CastExprRes = ImpCastExprToType(SplattedExpr, Context.IntTy, | ||||||||
| 7313 | CK_BooleanToSignedIntegral); | ||||||||
| 7314 | SplattedExpr = CastExprRes.get(); | ||||||||
| 7315 | CK = CK_IntegralToFloating; | ||||||||
| 7316 | } else { | ||||||||
| 7317 | CK = CK_BooleanToSignedIntegral; | ||||||||
| 7318 | } | ||||||||
| 7319 | } else { | ||||||||
| 7320 | ExprResult CastExprRes = SplattedExpr; | ||||||||
| 7321 | CK = PrepareScalarCast(CastExprRes, DestElemTy); | ||||||||
| 7322 | if (CastExprRes.isInvalid()) | ||||||||
| 7323 | return ExprError(); | ||||||||
| 7324 | SplattedExpr = CastExprRes.get(); | ||||||||
| 7325 | } | ||||||||
| 7326 | return ImpCastExprToType(SplattedExpr, DestElemTy, CK); | ||||||||
| 7327 | } | ||||||||
| 7328 | |||||||||
| 7329 | ExprResult Sema::CheckExtVectorCast(SourceRange R, QualType DestTy, | ||||||||
| 7330 | Expr *CastExpr, CastKind &Kind) { | ||||||||
| 7331 | assert(DestTy->isExtVectorType() && "Not an extended vector type!")((DestTy->isExtVectorType() && "Not an extended vector type!" ) ? static_cast<void> (0) : __assert_fail ("DestTy->isExtVectorType() && \"Not an extended vector type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7331, __PRETTY_FUNCTION__)); | ||||||||
| 7332 | |||||||||
| 7333 | QualType SrcTy = CastExpr->getType(); | ||||||||
| 7334 | |||||||||
| 7335 | // If SrcTy is a VectorType, the total size must match to explicitly cast to | ||||||||
| 7336 | // an ExtVectorType. | ||||||||
| 7337 | // In OpenCL, casts between vectors of different types are not allowed. | ||||||||
| 7338 | // (See OpenCL 6.2). | ||||||||
| 7339 | if (SrcTy->isVectorType()) { | ||||||||
| 7340 | if (!areLaxCompatibleVectorTypes(SrcTy, DestTy) || | ||||||||
| 7341 | (getLangOpts().OpenCL && | ||||||||
| 7342 | !Context.hasSameUnqualifiedType(DestTy, SrcTy))) { | ||||||||
| 7343 | Diag(R.getBegin(),diag::err_invalid_conversion_between_ext_vectors) | ||||||||
| 7344 | << DestTy << SrcTy << R; | ||||||||
| 7345 | return ExprError(); | ||||||||
| 7346 | } | ||||||||
| 7347 | Kind = CK_BitCast; | ||||||||
| 7348 | return CastExpr; | ||||||||
| 7349 | } | ||||||||
| 7350 | |||||||||
| 7351 | // All non-pointer scalars can be cast to ExtVector type. The appropriate | ||||||||
| 7352 | // conversion will take place first from scalar to elt type, and then | ||||||||
| 7353 | // splat from elt type to vector. | ||||||||
| 7354 | if (SrcTy->isPointerType()) | ||||||||
| 7355 | return Diag(R.getBegin(), | ||||||||
| 7356 | diag::err_invalid_conversion_between_vector_and_scalar) | ||||||||
| 7357 | << DestTy << SrcTy << R; | ||||||||
| 7358 | |||||||||
| 7359 | Kind = CK_VectorSplat; | ||||||||
| 7360 | return prepareVectorSplat(DestTy, CastExpr); | ||||||||
| 7361 | } | ||||||||
| 7362 | |||||||||
| 7363 | ExprResult | ||||||||
| 7364 | Sema::ActOnCastExpr(Scope *S, SourceLocation LParenLoc, | ||||||||
| 7365 | Declarator &D, ParsedType &Ty, | ||||||||
| 7366 | SourceLocation RParenLoc, Expr *CastExpr) { | ||||||||
| 7367 | assert(!D.isInvalidType() && (CastExpr != nullptr) &&((!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr") ? static_cast<void > (0) : __assert_fail ("!D.isInvalidType() && (CastExpr != nullptr) && \"ActOnCastExpr(): missing type or expr\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7368, __PRETTY_FUNCTION__)) | ||||||||
| 7368 | "ActOnCastExpr(): missing type or expr")((!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr") ? static_cast<void > (0) : __assert_fail ("!D.isInvalidType() && (CastExpr != nullptr) && \"ActOnCastExpr(): missing type or expr\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7368, __PRETTY_FUNCTION__)); | ||||||||
| 7369 | |||||||||
| 7370 | TypeSourceInfo *castTInfo = GetTypeForDeclaratorCast(D, CastExpr->getType()); | ||||||||
| 7371 | if (D.isInvalidType()) | ||||||||
| 7372 | return ExprError(); | ||||||||
| 7373 | |||||||||
| 7374 | if (getLangOpts().CPlusPlus) { | ||||||||
| 7375 | // Check that there are no default arguments (C++ only). | ||||||||
| 7376 | CheckExtraCXXDefaultArguments(D); | ||||||||
| 7377 | } else { | ||||||||
| 7378 | // Make sure any TypoExprs have been dealt with. | ||||||||
| 7379 | ExprResult Res = CorrectDelayedTyposInExpr(CastExpr); | ||||||||
| 7380 | if (!Res.isUsable()) | ||||||||
| 7381 | return ExprError(); | ||||||||
| 7382 | CastExpr = Res.get(); | ||||||||
| 7383 | } | ||||||||
| 7384 | |||||||||
| 7385 | checkUnusedDeclAttributes(D); | ||||||||
| 7386 | |||||||||
| 7387 | QualType castType = castTInfo->getType(); | ||||||||
| 7388 | Ty = CreateParsedType(castType, castTInfo); | ||||||||
| 7389 | |||||||||
| 7390 | bool isVectorLiteral = false; | ||||||||
| 7391 | |||||||||
| 7392 | // Check for an altivec or OpenCL literal, | ||||||||
| 7393 | // i.e. all the elements are integer constants. | ||||||||
| 7394 | ParenExpr *PE = dyn_cast<ParenExpr>(CastExpr); | ||||||||
| 7395 | ParenListExpr *PLE = dyn_cast<ParenListExpr>(CastExpr); | ||||||||
| 7396 | if ((getLangOpts().AltiVec || getLangOpts().ZVector || getLangOpts().OpenCL) | ||||||||
| 7397 | && castType->isVectorType() && (PE || PLE)) { | ||||||||
| 7398 | if (PLE && PLE->getNumExprs() == 0) { | ||||||||
| 7399 | Diag(PLE->getExprLoc(), diag::err_altivec_empty_initializer); | ||||||||
| 7400 | return ExprError(); | ||||||||
| 7401 | } | ||||||||
| 7402 | if (PE || PLE->getNumExprs() == 1) { | ||||||||
| 7403 | Expr *E = (PE ? PE->getSubExpr() : PLE->getExpr(0)); | ||||||||
| 7404 | if (!E->getType()->isVectorType()) | ||||||||
| 7405 | isVectorLiteral = true; | ||||||||
| 7406 | } | ||||||||
| 7407 | else | ||||||||
| 7408 | isVectorLiteral = true; | ||||||||
| 7409 | } | ||||||||
| 7410 | |||||||||
| 7411 | // If this is a vector initializer, '(' type ')' '(' init, ..., init ')' | ||||||||
| 7412 | // then handle it as such. | ||||||||
| 7413 | if (isVectorLiteral) | ||||||||
| 7414 | return BuildVectorLiteral(LParenLoc, RParenLoc, CastExpr, castTInfo); | ||||||||
| 7415 | |||||||||
| 7416 | // If the Expr being casted is a ParenListExpr, handle it specially. | ||||||||
| 7417 | // This is not an AltiVec-style cast, so turn the ParenListExpr into a | ||||||||
| 7418 | // sequence of BinOp comma operators. | ||||||||
| 7419 | if (isa<ParenListExpr>(CastExpr)) { | ||||||||
| 7420 | ExprResult Result = MaybeConvertParenListExprToParenExpr(S, CastExpr); | ||||||||
| 7421 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 7422 | CastExpr = Result.get(); | ||||||||
| 7423 | } | ||||||||
| 7424 | |||||||||
| 7425 | if (getLangOpts().CPlusPlus && !castType->isVoidType() && | ||||||||
| 7426 | !getSourceManager().isInSystemMacro(LParenLoc)) | ||||||||
| 7427 | Diag(LParenLoc, diag::warn_old_style_cast) << CastExpr->getSourceRange(); | ||||||||
| 7428 | |||||||||
| 7429 | CheckTollFreeBridgeCast(castType, CastExpr); | ||||||||
| 7430 | |||||||||
| 7431 | CheckObjCBridgeRelatedCast(castType, CastExpr); | ||||||||
| 7432 | |||||||||
| 7433 | DiscardMisalignedMemberAddress(castType.getTypePtr(), CastExpr); | ||||||||
| 7434 | |||||||||
| 7435 | return BuildCStyleCastExpr(LParenLoc, castTInfo, RParenLoc, CastExpr); | ||||||||
| 7436 | } | ||||||||
| 7437 | |||||||||
| 7438 | ExprResult Sema::BuildVectorLiteral(SourceLocation LParenLoc, | ||||||||
| 7439 | SourceLocation RParenLoc, Expr *E, | ||||||||
| 7440 | TypeSourceInfo *TInfo) { | ||||||||
| 7441 | assert((isa<ParenListExpr>(E) || isa<ParenExpr>(E)) &&(((isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && "Expected paren or paren list expression") ? static_cast< void> (0) : __assert_fail ("(isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && \"Expected paren or paren list expression\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7442, __PRETTY_FUNCTION__)) | ||||||||
| 7442 | "Expected paren or paren list expression")(((isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && "Expected paren or paren list expression") ? static_cast< void> (0) : __assert_fail ("(isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && \"Expected paren or paren list expression\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7442, __PRETTY_FUNCTION__)); | ||||||||
| 7443 | |||||||||
| 7444 | Expr **exprs; | ||||||||
| 7445 | unsigned numExprs; | ||||||||
| 7446 | Expr *subExpr; | ||||||||
| 7447 | SourceLocation LiteralLParenLoc, LiteralRParenLoc; | ||||||||
| 7448 | if (ParenListExpr *PE = dyn_cast<ParenListExpr>(E)) { | ||||||||
| 7449 | LiteralLParenLoc = PE->getLParenLoc(); | ||||||||
| 7450 | LiteralRParenLoc = PE->getRParenLoc(); | ||||||||
| 7451 | exprs = PE->getExprs(); | ||||||||
| 7452 | numExprs = PE->getNumExprs(); | ||||||||
| 7453 | } else { // isa<ParenExpr> by assertion at function entrance | ||||||||
| 7454 | LiteralLParenLoc = cast<ParenExpr>(E)->getLParen(); | ||||||||
| 7455 | LiteralRParenLoc = cast<ParenExpr>(E)->getRParen(); | ||||||||
| 7456 | subExpr = cast<ParenExpr>(E)->getSubExpr(); | ||||||||
| 7457 | exprs = &subExpr; | ||||||||
| 7458 | numExprs = 1; | ||||||||
| 7459 | } | ||||||||
| 7460 | |||||||||
| 7461 | QualType Ty = TInfo->getType(); | ||||||||
| 7462 | assert(Ty->isVectorType() && "Expected vector type")((Ty->isVectorType() && "Expected vector type") ? static_cast <void> (0) : __assert_fail ("Ty->isVectorType() && \"Expected vector type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7462, __PRETTY_FUNCTION__)); | ||||||||
| 7463 | |||||||||
| 7464 | SmallVector<Expr *, 8> initExprs; | ||||||||
| 7465 | const VectorType *VTy = Ty->castAs<VectorType>(); | ||||||||
| 7466 | unsigned numElems = VTy->getNumElements(); | ||||||||
| 7467 | |||||||||
| 7468 | // '(...)' form of vector initialization in AltiVec: the number of | ||||||||
| 7469 | // initializers must be one or must match the size of the vector. | ||||||||
| 7470 | // If a single value is specified in the initializer then it will be | ||||||||
| 7471 | // replicated to all the components of the vector | ||||||||
| 7472 | if (VTy->getVectorKind() == VectorType::AltiVecVector) { | ||||||||
| 7473 | // The number of initializers must be one or must match the size of the | ||||||||
| 7474 | // vector. If a single value is specified in the initializer then it will | ||||||||
| 7475 | // be replicated to all the components of the vector | ||||||||
| 7476 | if (numExprs == 1) { | ||||||||
| 7477 | QualType ElemTy = VTy->getElementType(); | ||||||||
| 7478 | ExprResult Literal = DefaultLvalueConversion(exprs[0]); | ||||||||
| 7479 | if (Literal.isInvalid()) | ||||||||
| 7480 | return ExprError(); | ||||||||
| 7481 | Literal = ImpCastExprToType(Literal.get(), ElemTy, | ||||||||
| 7482 | PrepareScalarCast(Literal, ElemTy)); | ||||||||
| 7483 | return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); | ||||||||
| 7484 | } | ||||||||
| 7485 | else if (numExprs < numElems) { | ||||||||
| 7486 | Diag(E->getExprLoc(), | ||||||||
| 7487 | diag::err_incorrect_number_of_vector_initializers); | ||||||||
| 7488 | return ExprError(); | ||||||||
| 7489 | } | ||||||||
| 7490 | else | ||||||||
| 7491 | initExprs.append(exprs, exprs + numExprs); | ||||||||
| 7492 | } | ||||||||
| 7493 | else { | ||||||||
| 7494 | // For OpenCL, when the number of initializers is a single value, | ||||||||
| 7495 | // it will be replicated to all components of the vector. | ||||||||
| 7496 | if (getLangOpts().OpenCL && | ||||||||
| 7497 | VTy->getVectorKind() == VectorType::GenericVector && | ||||||||
| 7498 | numExprs == 1) { | ||||||||
| 7499 | QualType ElemTy = VTy->getElementType(); | ||||||||
| 7500 | ExprResult Literal = DefaultLvalueConversion(exprs[0]); | ||||||||
| 7501 | if (Literal.isInvalid()) | ||||||||
| 7502 | return ExprError(); | ||||||||
| 7503 | Literal = ImpCastExprToType(Literal.get(), ElemTy, | ||||||||
| 7504 | PrepareScalarCast(Literal, ElemTy)); | ||||||||
| 7505 | return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); | ||||||||
| 7506 | } | ||||||||
| 7507 | |||||||||
| 7508 | initExprs.append(exprs, exprs + numExprs); | ||||||||
| 7509 | } | ||||||||
| 7510 | // FIXME: This means that pretty-printing the final AST will produce curly | ||||||||
| 7511 | // braces instead of the original commas. | ||||||||
| 7512 | InitListExpr *initE = new (Context) InitListExpr(Context, LiteralLParenLoc, | ||||||||
| 7513 | initExprs, LiteralRParenLoc); | ||||||||
| 7514 | initE->setType(Ty); | ||||||||
| 7515 | return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, initE); | ||||||||
| 7516 | } | ||||||||
| 7517 | |||||||||
| 7518 | /// This is not an AltiVec-style cast or or C++ direct-initialization, so turn | ||||||||
| 7519 | /// the ParenListExpr into a sequence of comma binary operators. | ||||||||
| 7520 | ExprResult | ||||||||
| 7521 | Sema::MaybeConvertParenListExprToParenExpr(Scope *S, Expr *OrigExpr) { | ||||||||
| 7522 | ParenListExpr *E = dyn_cast<ParenListExpr>(OrigExpr); | ||||||||
| 7523 | if (!E) | ||||||||
| 7524 | return OrigExpr; | ||||||||
| 7525 | |||||||||
| 7526 | ExprResult Result(E->getExpr(0)); | ||||||||
| 7527 | |||||||||
| 7528 | for (unsigned i = 1, e = E->getNumExprs(); i != e && !Result.isInvalid(); ++i) | ||||||||
| 7529 | Result = ActOnBinOp(S, E->getExprLoc(), tok::comma, Result.get(), | ||||||||
| 7530 | E->getExpr(i)); | ||||||||
| 7531 | |||||||||
| 7532 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 7533 | |||||||||
| 7534 | return ActOnParenExpr(E->getLParenLoc(), E->getRParenLoc(), Result.get()); | ||||||||
| 7535 | } | ||||||||
| 7536 | |||||||||
| 7537 | ExprResult Sema::ActOnParenListExpr(SourceLocation L, | ||||||||
| 7538 | SourceLocation R, | ||||||||
| 7539 | MultiExprArg Val) { | ||||||||
| 7540 | return ParenListExpr::Create(Context, L, Val, R); | ||||||||
| 7541 | } | ||||||||
| 7542 | |||||||||
| 7543 | /// Emit a specialized diagnostic when one expression is a null pointer | ||||||||
| 7544 | /// constant and the other is not a pointer. Returns true if a diagnostic is | ||||||||
| 7545 | /// emitted. | ||||||||
| 7546 | bool Sema::DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, | ||||||||
| 7547 | SourceLocation QuestionLoc) { | ||||||||
| 7548 | Expr *NullExpr = LHSExpr; | ||||||||
| 7549 | Expr *NonPointerExpr = RHSExpr; | ||||||||
| 7550 | Expr::NullPointerConstantKind NullKind = | ||||||||
| 7551 | NullExpr->isNullPointerConstant(Context, | ||||||||
| 7552 | Expr::NPC_ValueDependentIsNotNull); | ||||||||
| 7553 | |||||||||
| 7554 | if (NullKind == Expr::NPCK_NotNull) { | ||||||||
| 7555 | NullExpr = RHSExpr; | ||||||||
| 7556 | NonPointerExpr = LHSExpr; | ||||||||
| 7557 | NullKind = | ||||||||
| 7558 | NullExpr->isNullPointerConstant(Context, | ||||||||
| 7559 | Expr::NPC_ValueDependentIsNotNull); | ||||||||
| 7560 | } | ||||||||
| 7561 | |||||||||
| 7562 | if (NullKind == Expr::NPCK_NotNull) | ||||||||
| 7563 | return false; | ||||||||
| 7564 | |||||||||
| 7565 | if (NullKind == Expr::NPCK_ZeroExpression) | ||||||||
| 7566 | return false; | ||||||||
| 7567 | |||||||||
| 7568 | if (NullKind == Expr::NPCK_ZeroLiteral) { | ||||||||
| 7569 | // In this case, check to make sure that we got here from a "NULL" | ||||||||
| 7570 | // string in the source code. | ||||||||
| 7571 | NullExpr = NullExpr->IgnoreParenImpCasts(); | ||||||||
| 7572 | SourceLocation loc = NullExpr->getExprLoc(); | ||||||||
| 7573 | if (!findMacroSpelling(loc, "NULL")) | ||||||||
| 7574 | return false; | ||||||||
| 7575 | } | ||||||||
| 7576 | |||||||||
| 7577 | int DiagType = (NullKind == Expr::NPCK_CXX11_nullptr); | ||||||||
| 7578 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands_null) | ||||||||
| 7579 | << NonPointerExpr->getType() << DiagType | ||||||||
| 7580 | << NonPointerExpr->getSourceRange(); | ||||||||
| 7581 | return true; | ||||||||
| 7582 | } | ||||||||
| 7583 | |||||||||
| 7584 | /// Return false if the condition expression is valid, true otherwise. | ||||||||
| 7585 | static bool checkCondition(Sema &S, Expr *Cond, SourceLocation QuestionLoc) { | ||||||||
| 7586 | QualType CondTy = Cond->getType(); | ||||||||
| 7587 | |||||||||
| 7588 | // OpenCL v1.1 s6.3.i says the condition cannot be a floating point type. | ||||||||
| 7589 | if (S.getLangOpts().OpenCL && CondTy->isFloatingType()) { | ||||||||
| 7590 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) | ||||||||
| 7591 | << CondTy << Cond->getSourceRange(); | ||||||||
| 7592 | return true; | ||||||||
| 7593 | } | ||||||||
| 7594 | |||||||||
| 7595 | // C99 6.5.15p2 | ||||||||
| 7596 | if (CondTy->isScalarType()) return false; | ||||||||
| 7597 | |||||||||
| 7598 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_scalar) | ||||||||
| 7599 | << CondTy << Cond->getSourceRange(); | ||||||||
| 7600 | return true; | ||||||||
| 7601 | } | ||||||||
| 7602 | |||||||||
| 7603 | /// Handle when one or both operands are void type. | ||||||||
| 7604 | static QualType checkConditionalVoidType(Sema &S, ExprResult &LHS, | ||||||||
| 7605 | ExprResult &RHS) { | ||||||||
| 7606 | Expr *LHSExpr = LHS.get(); | ||||||||
| 7607 | Expr *RHSExpr = RHS.get(); | ||||||||
| 7608 | |||||||||
| 7609 | if (!LHSExpr->getType()->isVoidType()) | ||||||||
| 7610 | S.Diag(RHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) | ||||||||
| 7611 | << RHSExpr->getSourceRange(); | ||||||||
| 7612 | if (!RHSExpr->getType()->isVoidType()) | ||||||||
| 7613 | S.Diag(LHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) | ||||||||
| 7614 | << LHSExpr->getSourceRange(); | ||||||||
| 7615 | LHS = S.ImpCastExprToType(LHS.get(), S.Context.VoidTy, CK_ToVoid); | ||||||||
| 7616 | RHS = S.ImpCastExprToType(RHS.get(), S.Context.VoidTy, CK_ToVoid); | ||||||||
| 7617 | return S.Context.VoidTy; | ||||||||
| 7618 | } | ||||||||
| 7619 | |||||||||
| 7620 | /// Return false if the NullExpr can be promoted to PointerTy, | ||||||||
| 7621 | /// true otherwise. | ||||||||
| 7622 | static bool checkConditionalNullPointer(Sema &S, ExprResult &NullExpr, | ||||||||
| 7623 | QualType PointerTy) { | ||||||||
| 7624 | if ((!PointerTy->isAnyPointerType() && !PointerTy->isBlockPointerType()) || | ||||||||
| 7625 | !NullExpr.get()->isNullPointerConstant(S.Context, | ||||||||
| 7626 | Expr::NPC_ValueDependentIsNull)) | ||||||||
| 7627 | return true; | ||||||||
| 7628 | |||||||||
| 7629 | NullExpr = S.ImpCastExprToType(NullExpr.get(), PointerTy, CK_NullToPointer); | ||||||||
| 7630 | return false; | ||||||||
| 7631 | } | ||||||||
| 7632 | |||||||||
| 7633 | /// Checks compatibility between two pointers and return the resulting | ||||||||
| 7634 | /// type. | ||||||||
| 7635 | static QualType checkConditionalPointerCompatibility(Sema &S, ExprResult &LHS, | ||||||||
| 7636 | ExprResult &RHS, | ||||||||
| 7637 | SourceLocation Loc) { | ||||||||
| 7638 | QualType LHSTy = LHS.get()->getType(); | ||||||||
| 7639 | QualType RHSTy = RHS.get()->getType(); | ||||||||
| 7640 | |||||||||
| 7641 | if (S.Context.hasSameType(LHSTy, RHSTy)) { | ||||||||
| 7642 | // Two identical pointers types are always compatible. | ||||||||
| 7643 | return LHSTy; | ||||||||
| 7644 | } | ||||||||
| 7645 | |||||||||
| 7646 | QualType lhptee, rhptee; | ||||||||
| 7647 | |||||||||
| 7648 | // Get the pointee types. | ||||||||
| 7649 | bool IsBlockPointer = false; | ||||||||
| 7650 | if (const BlockPointerType *LHSBTy = LHSTy->getAs<BlockPointerType>()) { | ||||||||
| 7651 | lhptee = LHSBTy->getPointeeType(); | ||||||||
| 7652 | rhptee = RHSTy->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
| 7653 | IsBlockPointer = true; | ||||||||
| 7654 | } else { | ||||||||
| 7655 | lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
| 7656 | rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
| 7657 | } | ||||||||
| 7658 | |||||||||
| 7659 | // C99 6.5.15p6: If both operands are pointers to compatible types or to | ||||||||
| 7660 | // differently qualified versions of compatible types, the result type is | ||||||||
| 7661 | // a pointer to an appropriately qualified version of the composite | ||||||||
| 7662 | // type. | ||||||||
| 7663 | |||||||||
| 7664 | // Only CVR-qualifiers exist in the standard, and the differently-qualified | ||||||||
| 7665 | // clause doesn't make sense for our extensions. E.g. address space 2 should | ||||||||
| 7666 | // be incompatible with address space 3: they may live on different devices or | ||||||||
| 7667 | // anything. | ||||||||
| 7668 | Qualifiers lhQual = lhptee.getQualifiers(); | ||||||||
| 7669 | Qualifiers rhQual = rhptee.getQualifiers(); | ||||||||
| 7670 | |||||||||
| 7671 | LangAS ResultAddrSpace = LangAS::Default; | ||||||||
| 7672 | LangAS LAddrSpace = lhQual.getAddressSpace(); | ||||||||
| 7673 | LangAS RAddrSpace = rhQual.getAddressSpace(); | ||||||||
| 7674 | |||||||||
| 7675 | // OpenCL v1.1 s6.5 - Conversion between pointers to distinct address | ||||||||
| 7676 | // spaces is disallowed. | ||||||||
| 7677 | if (lhQual.isAddressSpaceSupersetOf(rhQual)) | ||||||||
| 7678 | ResultAddrSpace = LAddrSpace; | ||||||||
| 7679 | else if (rhQual.isAddressSpaceSupersetOf(lhQual)) | ||||||||
| 7680 | ResultAddrSpace = RAddrSpace; | ||||||||
| 7681 | else { | ||||||||
| 7682 | S.Diag(Loc, diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||||||
| 7683 | << LHSTy << RHSTy << 2 << LHS.get()->getSourceRange() | ||||||||
| 7684 | << RHS.get()->getSourceRange(); | ||||||||
| 7685 | return QualType(); | ||||||||
| 7686 | } | ||||||||
| 7687 | |||||||||
| 7688 | unsigned MergedCVRQual = lhQual.getCVRQualifiers() | rhQual.getCVRQualifiers(); | ||||||||
| 7689 | auto LHSCastKind = CK_BitCast, RHSCastKind = CK_BitCast; | ||||||||
| 7690 | lhQual.removeCVRQualifiers(); | ||||||||
| 7691 | rhQual.removeCVRQualifiers(); | ||||||||
| 7692 | |||||||||
| 7693 | // OpenCL v2.0 specification doesn't extend compatibility of type qualifiers | ||||||||
| 7694 | // (C99 6.7.3) for address spaces. We assume that the check should behave in | ||||||||
| 7695 | // the same manner as it's defined for CVR qualifiers, so for OpenCL two | ||||||||
| 7696 | // qual types are compatible iff | ||||||||
| 7697 | // * corresponded types are compatible | ||||||||
| 7698 | // * CVR qualifiers are equal | ||||||||
| 7699 | // * address spaces are equal | ||||||||
| 7700 | // Thus for conditional operator we merge CVR and address space unqualified | ||||||||
| 7701 | // pointees and if there is a composite type we return a pointer to it with | ||||||||
| 7702 | // merged qualifiers. | ||||||||
| 7703 | LHSCastKind = | ||||||||
| 7704 | LAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; | ||||||||
| 7705 | RHSCastKind = | ||||||||
| 7706 | RAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; | ||||||||
| 7707 | lhQual.removeAddressSpace(); | ||||||||
| 7708 | rhQual.removeAddressSpace(); | ||||||||
| 7709 | |||||||||
| 7710 | lhptee = S.Context.getQualifiedType(lhptee.getUnqualifiedType(), lhQual); | ||||||||
| 7711 | rhptee = S.Context.getQualifiedType(rhptee.getUnqualifiedType(), rhQual); | ||||||||
| 7712 | |||||||||
| 7713 | QualType CompositeTy = S.Context.mergeTypes(lhptee, rhptee); | ||||||||
| 7714 | |||||||||
| 7715 | if (CompositeTy.isNull()) { | ||||||||
| 7716 | // In this situation, we assume void* type. No especially good | ||||||||
| 7717 | // reason, but this is what gcc does, and we do have to pick | ||||||||
| 7718 | // to get a consistent AST. | ||||||||
| 7719 | QualType incompatTy; | ||||||||
| 7720 | incompatTy = S.Context.getPointerType( | ||||||||
| 7721 | S.Context.getAddrSpaceQualType(S.Context.VoidTy, ResultAddrSpace)); | ||||||||
| 7722 | LHS = S.ImpCastExprToType(LHS.get(), incompatTy, LHSCastKind); | ||||||||
| 7723 | RHS = S.ImpCastExprToType(RHS.get(), incompatTy, RHSCastKind); | ||||||||
| 7724 | |||||||||
| 7725 | // FIXME: For OpenCL the warning emission and cast to void* leaves a room | ||||||||
| 7726 | // for casts between types with incompatible address space qualifiers. | ||||||||
| 7727 | // For the following code the compiler produces casts between global and | ||||||||
| 7728 | // local address spaces of the corresponded innermost pointees: | ||||||||
| 7729 | // local int *global *a; | ||||||||
| 7730 | // global int *global *b; | ||||||||
| 7731 | // a = (0 ? a : b); // see C99 6.5.16.1.p1. | ||||||||
| 7732 | S.Diag(Loc, diag::ext_typecheck_cond_incompatible_pointers) | ||||||||
| 7733 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
| 7734 | << RHS.get()->getSourceRange(); | ||||||||
| 7735 | |||||||||
| 7736 | return incompatTy; | ||||||||
| 7737 | } | ||||||||
| 7738 | |||||||||
| 7739 | // The pointer types are compatible. | ||||||||
| 7740 | // In case of OpenCL ResultTy should have the address space qualifier | ||||||||
| 7741 | // which is a superset of address spaces of both the 2nd and the 3rd | ||||||||
| 7742 | // operands of the conditional operator. | ||||||||
| 7743 | QualType ResultTy = [&, ResultAddrSpace]() { | ||||||||
| 7744 | if (S.getLangOpts().OpenCL) { | ||||||||
| 7745 | Qualifiers CompositeQuals = CompositeTy.getQualifiers(); | ||||||||
| 7746 | CompositeQuals.setAddressSpace(ResultAddrSpace); | ||||||||
| 7747 | return S.Context | ||||||||
| 7748 | .getQualifiedType(CompositeTy.getUnqualifiedType(), CompositeQuals) | ||||||||
| 7749 | .withCVRQualifiers(MergedCVRQual); | ||||||||
| 7750 | } | ||||||||
| 7751 | return CompositeTy.withCVRQualifiers(MergedCVRQual); | ||||||||
| 7752 | }(); | ||||||||
| 7753 | if (IsBlockPointer) | ||||||||
| 7754 | ResultTy = S.Context.getBlockPointerType(ResultTy); | ||||||||
| 7755 | else | ||||||||
| 7756 | ResultTy = S.Context.getPointerType(ResultTy); | ||||||||
| 7757 | |||||||||
| 7758 | LHS = S.ImpCastExprToType(LHS.get(), ResultTy, LHSCastKind); | ||||||||
| 7759 | RHS = S.ImpCastExprToType(RHS.get(), ResultTy, RHSCastKind); | ||||||||
| 7760 | return ResultTy; | ||||||||
| 7761 | } | ||||||||
| 7762 | |||||||||
| 7763 | /// Return the resulting type when the operands are both block pointers. | ||||||||
| 7764 | static QualType checkConditionalBlockPointerCompatibility(Sema &S, | ||||||||
| 7765 | ExprResult &LHS, | ||||||||
| 7766 | ExprResult &RHS, | ||||||||
| 7767 | SourceLocation Loc) { | ||||||||
| 7768 | QualType LHSTy = LHS.get()->getType(); | ||||||||
| 7769 | QualType RHSTy = RHS.get()->getType(); | ||||||||
| 7770 | |||||||||
| 7771 | if (!LHSTy->isBlockPointerType() || !RHSTy->isBlockPointerType()) { | ||||||||
| 7772 | if (LHSTy->isVoidPointerType() || RHSTy->isVoidPointerType()) { | ||||||||
| 7773 | QualType destType = S.Context.getPointerType(S.Context.VoidTy); | ||||||||
| 7774 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||||||
| 7775 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||||||
| 7776 | return destType; | ||||||||
| 7777 | } | ||||||||
| 7778 | S.Diag(Loc, diag::err_typecheck_cond_incompatible_operands) | ||||||||
| 7779 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
| 7780 | << RHS.get()->getSourceRange(); | ||||||||
| 7781 | return QualType(); | ||||||||
| 7782 | } | ||||||||
| 7783 | |||||||||
| 7784 | // We have 2 block pointer types. | ||||||||
| 7785 | return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); | ||||||||
| 7786 | } | ||||||||
| 7787 | |||||||||
| 7788 | /// Return the resulting type when the operands are both pointers. | ||||||||
| 7789 | static QualType | ||||||||
| 7790 | checkConditionalObjectPointersCompatibility(Sema &S, ExprResult &LHS, | ||||||||
| 7791 | ExprResult &RHS, | ||||||||
| 7792 | SourceLocation Loc) { | ||||||||
| 7793 | // get the pointer types | ||||||||
| 7794 | QualType LHSTy = LHS.get()->getType(); | ||||||||
| 7795 | QualType RHSTy = RHS.get()->getType(); | ||||||||
| 7796 | |||||||||
| 7797 | // get the "pointed to" types | ||||||||
| 7798 | QualType lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
| 7799 | QualType rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
| 7800 | |||||||||
| 7801 | // ignore qualifiers on void (C99 6.5.15p3, clause 6) | ||||||||
| 7802 | if (lhptee->isVoidType() && rhptee->isIncompleteOrObjectType()) { | ||||||||
| 7803 | // Figure out necessary qualifiers (C99 6.5.15p6) | ||||||||
| 7804 | QualType destPointee | ||||||||
| 7805 | = S.Context.getQualifiedType(lhptee, rhptee.getQualifiers()); | ||||||||
| 7806 | QualType destType = S.Context.getPointerType(destPointee); | ||||||||
| 7807 | // Add qualifiers if necessary. | ||||||||
| 7808 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_NoOp); | ||||||||
| 7809 | // Promote to void*. | ||||||||
| 7810 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||||||
| 7811 | return destType; | ||||||||
| 7812 | } | ||||||||
| 7813 | if (rhptee->isVoidType() && lhptee->isIncompleteOrObjectType()) { | ||||||||
| 7814 | QualType destPointee | ||||||||
| 7815 | = S.Context.getQualifiedType(rhptee, lhptee.getQualifiers()); | ||||||||
| 7816 | QualType destType = S.Context.getPointerType(destPointee); | ||||||||
| 7817 | // Add qualifiers if necessary. | ||||||||
| 7818 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_NoOp); | ||||||||
| 7819 | // Promote to void*. | ||||||||
| 7820 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||||||
| 7821 | return destType; | ||||||||
| 7822 | } | ||||||||
| 7823 | |||||||||
| 7824 | return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); | ||||||||
| 7825 | } | ||||||||
| 7826 | |||||||||
| 7827 | /// Return false if the first expression is not an integer and the second | ||||||||
| 7828 | /// expression is not a pointer, true otherwise. | ||||||||
| 7829 | static bool checkPointerIntegerMismatch(Sema &S, ExprResult &Int, | ||||||||
| 7830 | Expr* PointerExpr, SourceLocation Loc, | ||||||||
| 7831 | bool IsIntFirstExpr) { | ||||||||
| 7832 | if (!PointerExpr->getType()->isPointerType() || | ||||||||
| 7833 | !Int.get()->getType()->isIntegerType()) | ||||||||
| 7834 | return false; | ||||||||
| 7835 | |||||||||
| 7836 | Expr *Expr1 = IsIntFirstExpr ? Int.get() : PointerExpr; | ||||||||
| 7837 | Expr *Expr2 = IsIntFirstExpr ? PointerExpr : Int.get(); | ||||||||
| 7838 | |||||||||
| 7839 | S.Diag(Loc, diag::ext_typecheck_cond_pointer_integer_mismatch) | ||||||||
| 7840 | << Expr1->getType() << Expr2->getType() | ||||||||
| 7841 | << Expr1->getSourceRange() << Expr2->getSourceRange(); | ||||||||
| 7842 | Int = S.ImpCastExprToType(Int.get(), PointerExpr->getType(), | ||||||||
| 7843 | CK_IntegralToPointer); | ||||||||
| 7844 | return true; | ||||||||
| 7845 | } | ||||||||
| 7846 | |||||||||
| 7847 | /// Simple conversion between integer and floating point types. | ||||||||
| 7848 | /// | ||||||||
| 7849 | /// Used when handling the OpenCL conditional operator where the | ||||||||
| 7850 | /// condition is a vector while the other operands are scalar. | ||||||||
| 7851 | /// | ||||||||
| 7852 | /// OpenCL v1.1 s6.3.i and s6.11.6 together require that the scalar | ||||||||
| 7853 | /// types are either integer or floating type. Between the two | ||||||||
| 7854 | /// operands, the type with the higher rank is defined as the "result | ||||||||
| 7855 | /// type". The other operand needs to be promoted to the same type. No | ||||||||
| 7856 | /// other type promotion is allowed. We cannot use | ||||||||
| 7857 | /// UsualArithmeticConversions() for this purpose, since it always | ||||||||
| 7858 | /// promotes promotable types. | ||||||||
| 7859 | static QualType OpenCLArithmeticConversions(Sema &S, ExprResult &LHS, | ||||||||
| 7860 | ExprResult &RHS, | ||||||||
| 7861 | SourceLocation QuestionLoc) { | ||||||||
| 7862 | LHS = S.DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
| 7863 | if (LHS.isInvalid()) | ||||||||
| 7864 | return QualType(); | ||||||||
| 7865 | RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
| 7866 | if (RHS.isInvalid()) | ||||||||
| 7867 | return QualType(); | ||||||||
| 7868 | |||||||||
| 7869 | // For conversion purposes, we ignore any qualifiers. | ||||||||
| 7870 | // For example, "const float" and "float" are equivalent. | ||||||||
| 7871 | QualType LHSType = | ||||||||
| 7872 | S.Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); | ||||||||
| 7873 | QualType RHSType = | ||||||||
| 7874 | S.Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); | ||||||||
| 7875 | |||||||||
| 7876 | if (!LHSType->isIntegerType() && !LHSType->isRealFloatingType()) { | ||||||||
| 7877 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) | ||||||||
| 7878 | << LHSType << LHS.get()->getSourceRange(); | ||||||||
| 7879 | return QualType(); | ||||||||
| 7880 | } | ||||||||
| 7881 | |||||||||
| 7882 | if (!RHSType->isIntegerType() && !RHSType->isRealFloatingType()) { | ||||||||
| 7883 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) | ||||||||
| 7884 | << RHSType << RHS.get()->getSourceRange(); | ||||||||
| 7885 | return QualType(); | ||||||||
| 7886 | } | ||||||||
| 7887 | |||||||||
| 7888 | // If both types are identical, no conversion is needed. | ||||||||
| 7889 | if (LHSType == RHSType) | ||||||||
| 7890 | return LHSType; | ||||||||
| 7891 | |||||||||
| 7892 | // Now handle "real" floating types (i.e. float, double, long double). | ||||||||
| 7893 | if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) | ||||||||
| 7894 | return handleFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||||||
| 7895 | /*IsCompAssign = */ false); | ||||||||
| 7896 | |||||||||
| 7897 | // Finally, we have two differing integer types. | ||||||||
| 7898 | return handleIntegerConversion<doIntegralCast, doIntegralCast> | ||||||||
| 7899 | (S, LHS, RHS, LHSType, RHSType, /*IsCompAssign = */ false); | ||||||||
| 7900 | } | ||||||||
| 7901 | |||||||||
| 7902 | /// Convert scalar operands to a vector that matches the | ||||||||
| 7903 | /// condition in length. | ||||||||
| 7904 | /// | ||||||||
| 7905 | /// Used when handling the OpenCL conditional operator where the | ||||||||
| 7906 | /// condition is a vector while the other operands are scalar. | ||||||||
| 7907 | /// | ||||||||
| 7908 | /// We first compute the "result type" for the scalar operands | ||||||||
| 7909 | /// according to OpenCL v1.1 s6.3.i. Both operands are then converted | ||||||||
| 7910 | /// into a vector of that type where the length matches the condition | ||||||||
| 7911 | /// vector type. s6.11.6 requires that the element types of the result | ||||||||
| 7912 | /// and the condition must have the same number of bits. | ||||||||
| 7913 | static QualType | ||||||||
| 7914 | OpenCLConvertScalarsToVectors(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
| 7915 | QualType CondTy, SourceLocation QuestionLoc) { | ||||||||
| 7916 | QualType ResTy = OpenCLArithmeticConversions(S, LHS, RHS, QuestionLoc); | ||||||||
| 7917 | if (ResTy.isNull()) return QualType(); | ||||||||
| 7918 | |||||||||
| 7919 | const VectorType *CV = CondTy->getAs<VectorType>(); | ||||||||
| 7920 | assert(CV)((CV) ? static_cast<void> (0) : __assert_fail ("CV", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7920, __PRETTY_FUNCTION__)); | ||||||||
| 7921 | |||||||||
| 7922 | // Determine the vector result type | ||||||||
| 7923 | unsigned NumElements = CV->getNumElements(); | ||||||||
| 7924 | QualType VectorTy = S.Context.getExtVectorType(ResTy, NumElements); | ||||||||
| 7925 | |||||||||
| 7926 | // Ensure that all types have the same number of bits | ||||||||
| 7927 | if (S.Context.getTypeSize(CV->getElementType()) | ||||||||
| 7928 | != S.Context.getTypeSize(ResTy)) { | ||||||||
| 7929 | // Since VectorTy is created internally, it does not pretty print | ||||||||
| 7930 | // with an OpenCL name. Instead, we just print a description. | ||||||||
| 7931 | std::string EleTyName = ResTy.getUnqualifiedType().getAsString(); | ||||||||
| 7932 | SmallString<64> Str; | ||||||||
| 7933 | llvm::raw_svector_ostream OS(Str); | ||||||||
| 7934 | OS << "(vector of " << NumElements << " '" << EleTyName << "' values)"; | ||||||||
| 7935 | S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) | ||||||||
| 7936 | << CondTy << OS.str(); | ||||||||
| 7937 | return QualType(); | ||||||||
| 7938 | } | ||||||||
| 7939 | |||||||||
| 7940 | // Convert operands to the vector result type | ||||||||
| 7941 | LHS = S.ImpCastExprToType(LHS.get(), VectorTy, CK_VectorSplat); | ||||||||
| 7942 | RHS = S.ImpCastExprToType(RHS.get(), VectorTy, CK_VectorSplat); | ||||||||
| 7943 | |||||||||
| 7944 | return VectorTy; | ||||||||
| 7945 | } | ||||||||
| 7946 | |||||||||
| 7947 | /// Return false if this is a valid OpenCL condition vector | ||||||||
| 7948 | static bool checkOpenCLConditionVector(Sema &S, Expr *Cond, | ||||||||
| 7949 | SourceLocation QuestionLoc) { | ||||||||
| 7950 | // OpenCL v1.1 s6.11.6 says the elements of the vector must be of | ||||||||
| 7951 | // integral type. | ||||||||
| 7952 | const VectorType *CondTy = Cond->getType()->getAs<VectorType>(); | ||||||||
| 7953 | assert(CondTy)((CondTy) ? static_cast<void> (0) : __assert_fail ("CondTy" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7953, __PRETTY_FUNCTION__)); | ||||||||
| 7954 | QualType EleTy = CondTy->getElementType(); | ||||||||
| 7955 | if (EleTy->isIntegerType()) return false; | ||||||||
| 7956 | |||||||||
| 7957 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) | ||||||||
| 7958 | << Cond->getType() << Cond->getSourceRange(); | ||||||||
| 7959 | return true; | ||||||||
| 7960 | } | ||||||||
| 7961 | |||||||||
| 7962 | /// Return false if the vector condition type and the vector | ||||||||
| 7963 | /// result type are compatible. | ||||||||
| 7964 | /// | ||||||||
| 7965 | /// OpenCL v1.1 s6.11.6 requires that both vector types have the same | ||||||||
| 7966 | /// number of elements, and their element types have the same number | ||||||||
| 7967 | /// of bits. | ||||||||
| 7968 | static bool checkVectorResult(Sema &S, QualType CondTy, QualType VecResTy, | ||||||||
| 7969 | SourceLocation QuestionLoc) { | ||||||||
| 7970 | const VectorType *CV = CondTy->getAs<VectorType>(); | ||||||||
| 7971 | const VectorType *RV = VecResTy->getAs<VectorType>(); | ||||||||
| 7972 | assert(CV && RV)((CV && RV) ? static_cast<void> (0) : __assert_fail ("CV && RV", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 7972, __PRETTY_FUNCTION__)); | ||||||||
| 7973 | |||||||||
| 7974 | if (CV->getNumElements() != RV->getNumElements()) { | ||||||||
| 7975 | S.Diag(QuestionLoc, diag::err_conditional_vector_size) | ||||||||
| 7976 | << CondTy << VecResTy; | ||||||||
| 7977 | return true; | ||||||||
| 7978 | } | ||||||||
| 7979 | |||||||||
| 7980 | QualType CVE = CV->getElementType(); | ||||||||
| 7981 | QualType RVE = RV->getElementType(); | ||||||||
| 7982 | |||||||||
| 7983 | if (S.Context.getTypeSize(CVE) != S.Context.getTypeSize(RVE)) { | ||||||||
| 7984 | S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) | ||||||||
| 7985 | << CondTy << VecResTy; | ||||||||
| 7986 | return true; | ||||||||
| 7987 | } | ||||||||
| 7988 | |||||||||
| 7989 | return false; | ||||||||
| 7990 | } | ||||||||
| 7991 | |||||||||
| 7992 | /// Return the resulting type for the conditional operator in | ||||||||
| 7993 | /// OpenCL (aka "ternary selection operator", OpenCL v1.1 | ||||||||
| 7994 | /// s6.3.i) when the condition is a vector type. | ||||||||
| 7995 | static QualType | ||||||||
| 7996 | OpenCLCheckVectorConditional(Sema &S, ExprResult &Cond, | ||||||||
| 7997 | ExprResult &LHS, ExprResult &RHS, | ||||||||
| 7998 | SourceLocation QuestionLoc) { | ||||||||
| 7999 | Cond = S.DefaultFunctionArrayLvalueConversion(Cond.get()); | ||||||||
| 8000 | if (Cond.isInvalid()) | ||||||||
| 8001 | return QualType(); | ||||||||
| 8002 | QualType CondTy = Cond.get()->getType(); | ||||||||
| 8003 | |||||||||
| 8004 | if (checkOpenCLConditionVector(S, Cond.get(), QuestionLoc)) | ||||||||
| 8005 | return QualType(); | ||||||||
| 8006 | |||||||||
| 8007 | // If either operand is a vector then find the vector type of the | ||||||||
| 8008 | // result as specified in OpenCL v1.1 s6.3.i. | ||||||||
| 8009 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 8010 | RHS.get()->getType()->isVectorType()) { | ||||||||
| 8011 | QualType VecResTy = S.CheckVectorOperands(LHS, RHS, QuestionLoc, | ||||||||
| 8012 | /*isCompAssign*/false, | ||||||||
| 8013 | /*AllowBothBool*/true, | ||||||||
| 8014 | /*AllowBoolConversions*/false); | ||||||||
| 8015 | if (VecResTy.isNull()) return QualType(); | ||||||||
| 8016 | // The result type must match the condition type as specified in | ||||||||
| 8017 | // OpenCL v1.1 s6.11.6. | ||||||||
| 8018 | if (checkVectorResult(S, CondTy, VecResTy, QuestionLoc)) | ||||||||
| 8019 | return QualType(); | ||||||||
| 8020 | return VecResTy; | ||||||||
| 8021 | } | ||||||||
| 8022 | |||||||||
| 8023 | // Both operands are scalar. | ||||||||
| 8024 | return OpenCLConvertScalarsToVectors(S, LHS, RHS, CondTy, QuestionLoc); | ||||||||
| 8025 | } | ||||||||
| 8026 | |||||||||
| 8027 | /// Return true if the Expr is block type | ||||||||
| 8028 | static bool checkBlockType(Sema &S, const Expr *E) { | ||||||||
| 8029 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { | ||||||||
| 8030 | QualType Ty = CE->getCallee()->getType(); | ||||||||
| 8031 | if (Ty->isBlockPointerType()) { | ||||||||
| 8032 | S.Diag(E->getExprLoc(), diag::err_opencl_ternary_with_block); | ||||||||
| 8033 | return true; | ||||||||
| 8034 | } | ||||||||
| 8035 | } | ||||||||
| 8036 | return false; | ||||||||
| 8037 | } | ||||||||
| 8038 | |||||||||
| 8039 | /// Note that LHS is not null here, even if this is the gnu "x ?: y" extension. | ||||||||
| 8040 | /// In that case, LHS = cond. | ||||||||
| 8041 | /// C99 6.5.15 | ||||||||
| 8042 | QualType Sema::CheckConditionalOperands(ExprResult &Cond, ExprResult &LHS, | ||||||||
| 8043 | ExprResult &RHS, ExprValueKind &VK, | ||||||||
| 8044 | ExprObjectKind &OK, | ||||||||
| 8045 | SourceLocation QuestionLoc) { | ||||||||
| 8046 | |||||||||
| 8047 | ExprResult LHSResult = CheckPlaceholderExpr(LHS.get()); | ||||||||
| 8048 | if (!LHSResult.isUsable()) return QualType(); | ||||||||
| 8049 | LHS = LHSResult; | ||||||||
| 8050 | |||||||||
| 8051 | ExprResult RHSResult = CheckPlaceholderExpr(RHS.get()); | ||||||||
| 8052 | if (!RHSResult.isUsable()) return QualType(); | ||||||||
| 8053 | RHS = RHSResult; | ||||||||
| 8054 | |||||||||
| 8055 | // C++ is sufficiently different to merit its own checker. | ||||||||
| 8056 | if (getLangOpts().CPlusPlus) | ||||||||
| 8057 | return CXXCheckConditionalOperands(Cond, LHS, RHS, VK, OK, QuestionLoc); | ||||||||
| 8058 | |||||||||
| 8059 | VK = VK_RValue; | ||||||||
| 8060 | OK = OK_Ordinary; | ||||||||
| 8061 | |||||||||
| 8062 | // The OpenCL operator with a vector condition is sufficiently | ||||||||
| 8063 | // different to merit its own checker. | ||||||||
| 8064 | if ((getLangOpts().OpenCL && Cond.get()->getType()->isVectorType()) || | ||||||||
| 8065 | Cond.get()->getType()->isExtVectorType()) | ||||||||
| 8066 | return OpenCLCheckVectorConditional(*this, Cond, LHS, RHS, QuestionLoc); | ||||||||
| 8067 | |||||||||
| 8068 | // First, check the condition. | ||||||||
| 8069 | Cond = UsualUnaryConversions(Cond.get()); | ||||||||
| 8070 | if (Cond.isInvalid()) | ||||||||
| 8071 | return QualType(); | ||||||||
| 8072 | if (checkCondition(*this, Cond.get(), QuestionLoc)) | ||||||||
| 8073 | return QualType(); | ||||||||
| 8074 | |||||||||
| 8075 | // Now check the two expressions. | ||||||||
| 8076 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 8077 | RHS.get()->getType()->isVectorType()) | ||||||||
| 8078 | return CheckVectorOperands(LHS, RHS, QuestionLoc, /*isCompAssign*/false, | ||||||||
| 8079 | /*AllowBothBool*/true, | ||||||||
| 8080 | /*AllowBoolConversions*/false); | ||||||||
| 8081 | |||||||||
| 8082 | QualType ResTy = | ||||||||
| 8083 | UsualArithmeticConversions(LHS, RHS, QuestionLoc, ACK_Conditional); | ||||||||
| 8084 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 8085 | return QualType(); | ||||||||
| 8086 | |||||||||
| 8087 | QualType LHSTy = LHS.get()->getType(); | ||||||||
| 8088 | QualType RHSTy = RHS.get()->getType(); | ||||||||
| 8089 | |||||||||
| 8090 | // Diagnose attempts to convert between __float128 and long double where | ||||||||
| 8091 | // such conversions currently can't be handled. | ||||||||
| 8092 | if (unsupportedTypeConversion(*this, LHSTy, RHSTy)) { | ||||||||
| 8093 | Diag(QuestionLoc, | ||||||||
| 8094 | diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy | ||||||||
| 8095 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 8096 | return QualType(); | ||||||||
| 8097 | } | ||||||||
| 8098 | |||||||||
| 8099 | // OpenCL v2.0 s6.12.5 - Blocks cannot be used as expressions of the ternary | ||||||||
| 8100 | // selection operator (?:). | ||||||||
| 8101 | if (getLangOpts().OpenCL && | ||||||||
| 8102 | (checkBlockType(*this, LHS.get()) | checkBlockType(*this, RHS.get()))) { | ||||||||
| 8103 | return QualType(); | ||||||||
| 8104 | } | ||||||||
| 8105 | |||||||||
| 8106 | // If both operands have arithmetic type, do the usual arithmetic conversions | ||||||||
| 8107 | // to find a common type: C99 6.5.15p3,5. | ||||||||
| 8108 | if (LHSTy->isArithmeticType() && RHSTy->isArithmeticType()) { | ||||||||
| 8109 | // Disallow invalid arithmetic conversions, such as those between ExtInts of | ||||||||
| 8110 | // different sizes, or between ExtInts and other types. | ||||||||
| 8111 | if (ResTy.isNull() && (LHSTy->isExtIntType() || RHSTy->isExtIntType())) { | ||||||||
| 8112 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) | ||||||||
| 8113 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
| 8114 | << RHS.get()->getSourceRange(); | ||||||||
| 8115 | return QualType(); | ||||||||
| 8116 | } | ||||||||
| 8117 | |||||||||
| 8118 | LHS = ImpCastExprToType(LHS.get(), ResTy, PrepareScalarCast(LHS, ResTy)); | ||||||||
| 8119 | RHS = ImpCastExprToType(RHS.get(), ResTy, PrepareScalarCast(RHS, ResTy)); | ||||||||
| 8120 | |||||||||
| 8121 | return ResTy; | ||||||||
| 8122 | } | ||||||||
| 8123 | |||||||||
| 8124 | // And if they're both bfloat (which isn't arithmetic), that's fine too. | ||||||||
| 8125 | if (LHSTy->isBFloat16Type() && RHSTy->isBFloat16Type()) { | ||||||||
| 8126 | return LHSTy; | ||||||||
| 8127 | } | ||||||||
| 8128 | |||||||||
| 8129 | // If both operands are the same structure or union type, the result is that | ||||||||
| 8130 | // type. | ||||||||
| 8131 | if (const RecordType *LHSRT = LHSTy->getAs<RecordType>()) { // C99 6.5.15p3 | ||||||||
| 8132 | if (const RecordType *RHSRT = RHSTy->getAs<RecordType>()) | ||||||||
| 8133 | if (LHSRT->getDecl() == RHSRT->getDecl()) | ||||||||
| 8134 | // "If both the operands have structure or union type, the result has | ||||||||
| 8135 | // that type." This implies that CV qualifiers are dropped. | ||||||||
| 8136 | return LHSTy.getUnqualifiedType(); | ||||||||
| 8137 | // FIXME: Type of conditional expression must be complete in C mode. | ||||||||
| 8138 | } | ||||||||
| 8139 | |||||||||
| 8140 | // C99 6.5.15p5: "If both operands have void type, the result has void type." | ||||||||
| 8141 | // The following || allows only one side to be void (a GCC-ism). | ||||||||
| 8142 | if (LHSTy->isVoidType() || RHSTy->isVoidType()) { | ||||||||
| 8143 | return checkConditionalVoidType(*this, LHS, RHS); | ||||||||
| 8144 | } | ||||||||
| 8145 | |||||||||
| 8146 | // C99 6.5.15p6 - "if one operand is a null pointer constant, the result has | ||||||||
| 8147 | // the type of the other operand." | ||||||||
| 8148 | if (!checkConditionalNullPointer(*this, RHS, LHSTy)) return LHSTy; | ||||||||
| 8149 | if (!checkConditionalNullPointer(*this, LHS, RHSTy)) return RHSTy; | ||||||||
| 8150 | |||||||||
| 8151 | // All objective-c pointer type analysis is done here. | ||||||||
| 8152 | QualType compositeType = FindCompositeObjCPointerType(LHS, RHS, | ||||||||
| 8153 | QuestionLoc); | ||||||||
| 8154 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 8155 | return QualType(); | ||||||||
| 8156 | if (!compositeType.isNull()) | ||||||||
| 8157 | return compositeType; | ||||||||
| 8158 | |||||||||
| 8159 | |||||||||
| 8160 | // Handle block pointer types. | ||||||||
| 8161 | if (LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) | ||||||||
| 8162 | return checkConditionalBlockPointerCompatibility(*this, LHS, RHS, | ||||||||
| 8163 | QuestionLoc); | ||||||||
| 8164 | |||||||||
| 8165 | // Check constraints for C object pointers types (C99 6.5.15p3,6). | ||||||||
| 8166 | if (LHSTy->isPointerType() && RHSTy->isPointerType()) | ||||||||
| 8167 | return checkConditionalObjectPointersCompatibility(*this, LHS, RHS, | ||||||||
| 8168 | QuestionLoc); | ||||||||
| 8169 | |||||||||
| 8170 | // GCC compatibility: soften pointer/integer mismatch. Note that | ||||||||
| 8171 | // null pointers have been filtered out by this point. | ||||||||
| 8172 | if (checkPointerIntegerMismatch(*this, LHS, RHS.get(), QuestionLoc, | ||||||||
| 8173 | /*IsIntFirstExpr=*/true)) | ||||||||
| 8174 | return RHSTy; | ||||||||
| 8175 | if (checkPointerIntegerMismatch(*this, RHS, LHS.get(), QuestionLoc, | ||||||||
| 8176 | /*IsIntFirstExpr=*/false)) | ||||||||
| 8177 | return LHSTy; | ||||||||
| 8178 | |||||||||
| 8179 | // Allow ?: operations in which both operands have the same | ||||||||
| 8180 | // built-in sizeless type. | ||||||||
| 8181 | if (LHSTy->isSizelessBuiltinType() && LHSTy == RHSTy) | ||||||||
| 8182 | return LHSTy; | ||||||||
| 8183 | |||||||||
| 8184 | // Emit a better diagnostic if one of the expressions is a null pointer | ||||||||
| 8185 | // constant and the other is not a pointer type. In this case, the user most | ||||||||
| 8186 | // likely forgot to take the address of the other expression. | ||||||||
| 8187 | if (DiagnoseConditionalForNull(LHS.get(), RHS.get(), QuestionLoc)) | ||||||||
| 8188 | return QualType(); | ||||||||
| 8189 | |||||||||
| 8190 | // Otherwise, the operands are not compatible. | ||||||||
| 8191 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) | ||||||||
| 8192 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||||||
| 8193 | << RHS.get()->getSourceRange(); | ||||||||
| 8194 | return QualType(); | ||||||||
| 8195 | } | ||||||||
| 8196 | |||||||||
| 8197 | /// FindCompositeObjCPointerType - Helper method to find composite type of | ||||||||
| 8198 | /// two objective-c pointer types of the two input expressions. | ||||||||
| 8199 | QualType Sema::FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 8200 | SourceLocation QuestionLoc) { | ||||||||
| 8201 | QualType LHSTy = LHS.get()->getType(); | ||||||||
| 8202 | QualType RHSTy = RHS.get()->getType(); | ||||||||
| 8203 | |||||||||
| 8204 | // Handle things like Class and struct objc_class*. Here we case the result | ||||||||
| 8205 | // to the pseudo-builtin, because that will be implicitly cast back to the | ||||||||
| 8206 | // redefinition type if an attempt is made to access its fields. | ||||||||
| 8207 | if (LHSTy->isObjCClassType() && | ||||||||
| 8208 | (Context.hasSameType(RHSTy, Context.getObjCClassRedefinitionType()))) { | ||||||||
| 8209 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); | ||||||||
| 8210 | return LHSTy; | ||||||||
| 8211 | } | ||||||||
| 8212 | if (RHSTy->isObjCClassType() && | ||||||||
| 8213 | (Context.hasSameType(LHSTy, Context.getObjCClassRedefinitionType()))) { | ||||||||
| 8214 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); | ||||||||
| 8215 | return RHSTy; | ||||||||
| 8216 | } | ||||||||
| 8217 | // And the same for struct objc_object* / id | ||||||||
| 8218 | if (LHSTy->isObjCIdType() && | ||||||||
| 8219 | (Context.hasSameType(RHSTy, Context.getObjCIdRedefinitionType()))) { | ||||||||
| 8220 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); | ||||||||
| 8221 | return LHSTy; | ||||||||
| 8222 | } | ||||||||
| 8223 | if (RHSTy->isObjCIdType() && | ||||||||
| 8224 | (Context.hasSameType(LHSTy, Context.getObjCIdRedefinitionType()))) { | ||||||||
| 8225 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); | ||||||||
| 8226 | return RHSTy; | ||||||||
| 8227 | } | ||||||||
| 8228 | // And the same for struct objc_selector* / SEL | ||||||||
| 8229 | if (Context.isObjCSelType(LHSTy) && | ||||||||
| 8230 | (Context.hasSameType(RHSTy, Context.getObjCSelRedefinitionType()))) { | ||||||||
| 8231 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_BitCast); | ||||||||
| 8232 | return LHSTy; | ||||||||
| 8233 | } | ||||||||
| 8234 | if (Context.isObjCSelType(RHSTy) && | ||||||||
| 8235 | (Context.hasSameType(LHSTy, Context.getObjCSelRedefinitionType()))) { | ||||||||
| 8236 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_BitCast); | ||||||||
| 8237 | return RHSTy; | ||||||||
| 8238 | } | ||||||||
| 8239 | // Check constraints for Objective-C object pointers types. | ||||||||
| 8240 | if (LHSTy->isObjCObjectPointerType() && RHSTy->isObjCObjectPointerType()) { | ||||||||
| 8241 | |||||||||
| 8242 | if (Context.getCanonicalType(LHSTy) == Context.getCanonicalType(RHSTy)) { | ||||||||
| 8243 | // Two identical object pointer types are always compatible. | ||||||||
| 8244 | return LHSTy; | ||||||||
| 8245 | } | ||||||||
| 8246 | const ObjCObjectPointerType *LHSOPT = LHSTy->castAs<ObjCObjectPointerType>(); | ||||||||
| 8247 | const ObjCObjectPointerType *RHSOPT = RHSTy->castAs<ObjCObjectPointerType>(); | ||||||||
| 8248 | QualType compositeType = LHSTy; | ||||||||
| 8249 | |||||||||
| 8250 | // If both operands are interfaces and either operand can be | ||||||||
| 8251 | // assigned to the other, use that type as the composite | ||||||||
| 8252 | // type. This allows | ||||||||
| 8253 | // xxx ? (A*) a : (B*) b | ||||||||
| 8254 | // where B is a subclass of A. | ||||||||
| 8255 | // | ||||||||
| 8256 | // Additionally, as for assignment, if either type is 'id' | ||||||||
| 8257 | // allow silent coercion. Finally, if the types are | ||||||||
| 8258 | // incompatible then make sure to use 'id' as the composite | ||||||||
| 8259 | // type so the result is acceptable for sending messages to. | ||||||||
| 8260 | |||||||||
| 8261 | // FIXME: Consider unifying with 'areComparableObjCPointerTypes'. | ||||||||
| 8262 | // It could return the composite type. | ||||||||
| 8263 | if (!(compositeType = | ||||||||
| 8264 | Context.areCommonBaseCompatible(LHSOPT, RHSOPT)).isNull()) { | ||||||||
| 8265 | // Nothing more to do. | ||||||||
| 8266 | } else if (Context.canAssignObjCInterfaces(LHSOPT, RHSOPT)) { | ||||||||
| 8267 | compositeType = RHSOPT->isObjCBuiltinType() ? RHSTy : LHSTy; | ||||||||
| 8268 | } else if (Context.canAssignObjCInterfaces(RHSOPT, LHSOPT)) { | ||||||||
| 8269 | compositeType = LHSOPT->isObjCBuiltinType() ? LHSTy : RHSTy; | ||||||||
| 8270 | } else if ((LHSOPT->isObjCQualifiedIdType() || | ||||||||
| 8271 | RHSOPT->isObjCQualifiedIdType()) && | ||||||||
| 8272 | Context.ObjCQualifiedIdTypesAreCompatible(LHSOPT, RHSOPT, | ||||||||
| 8273 | true)) { | ||||||||
| 8274 | // Need to handle "id<xx>" explicitly. | ||||||||
| 8275 | // GCC allows qualified id and any Objective-C type to devolve to | ||||||||
| 8276 | // id. Currently localizing to here until clear this should be | ||||||||
| 8277 | // part of ObjCQualifiedIdTypesAreCompatible. | ||||||||
| 8278 | compositeType = Context.getObjCIdType(); | ||||||||
| 8279 | } else if (LHSTy->isObjCIdType() || RHSTy->isObjCIdType()) { | ||||||||
| 8280 | compositeType = Context.getObjCIdType(); | ||||||||
| 8281 | } else { | ||||||||
| 8282 | Diag(QuestionLoc, diag::ext_typecheck_cond_incompatible_operands) | ||||||||
| 8283 | << LHSTy << RHSTy | ||||||||
| 8284 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 8285 | QualType incompatTy = Context.getObjCIdType(); | ||||||||
| 8286 | LHS = ImpCastExprToType(LHS.get(), incompatTy, CK_BitCast); | ||||||||
| 8287 | RHS = ImpCastExprToType(RHS.get(), incompatTy, CK_BitCast); | ||||||||
| 8288 | return incompatTy; | ||||||||
| 8289 | } | ||||||||
| 8290 | // The object pointer types are compatible. | ||||||||
| 8291 | LHS = ImpCastExprToType(LHS.get(), compositeType, CK_BitCast); | ||||||||
| 8292 | RHS = ImpCastExprToType(RHS.get(), compositeType, CK_BitCast); | ||||||||
| 8293 | return compositeType; | ||||||||
| 8294 | } | ||||||||
| 8295 | // Check Objective-C object pointer types and 'void *' | ||||||||
| 8296 | if (LHSTy->isVoidPointerType() && RHSTy->isObjCObjectPointerType()) { | ||||||||
| 8297 | if (getLangOpts().ObjCAutoRefCount) { | ||||||||
| 8298 | // ARC forbids the implicit conversion of object pointers to 'void *', | ||||||||
| 8299 | // so these types are not compatible. | ||||||||
| 8300 | Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy | ||||||||
| 8301 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 8302 | LHS = RHS = true; | ||||||||
| 8303 | return QualType(); | ||||||||
| 8304 | } | ||||||||
| 8305 | QualType lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
| 8306 | QualType rhptee = RHSTy->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
| 8307 | QualType destPointee | ||||||||
| 8308 | = Context.getQualifiedType(lhptee, rhptee.getQualifiers()); | ||||||||
| 8309 | QualType destType = Context.getPointerType(destPointee); | ||||||||
| 8310 | // Add qualifiers if necessary. | ||||||||
| 8311 | LHS = ImpCastExprToType(LHS.get(), destType, CK_NoOp); | ||||||||
| 8312 | // Promote to void*. | ||||||||
| 8313 | RHS = ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||||||
| 8314 | return destType; | ||||||||
| 8315 | } | ||||||||
| 8316 | if (LHSTy->isObjCObjectPointerType() && RHSTy->isVoidPointerType()) { | ||||||||
| 8317 | if (getLangOpts().ObjCAutoRefCount) { | ||||||||
| 8318 | // ARC forbids the implicit conversion of object pointers to 'void *', | ||||||||
| 8319 | // so these types are not compatible. | ||||||||
| 8320 | Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy | ||||||||
| 8321 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 8322 | LHS = RHS = true; | ||||||||
| 8323 | return QualType(); | ||||||||
| 8324 | } | ||||||||
| 8325 | QualType lhptee = LHSTy->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
| 8326 | QualType rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||||||
| 8327 | QualType destPointee | ||||||||
| 8328 | = Context.getQualifiedType(rhptee, lhptee.getQualifiers()); | ||||||||
| 8329 | QualType destType = Context.getPointerType(destPointee); | ||||||||
| 8330 | // Add qualifiers if necessary. | ||||||||
| 8331 | RHS = ImpCastExprToType(RHS.get(), destType, CK_NoOp); | ||||||||
| 8332 | // Promote to void*. | ||||||||
| 8333 | LHS = ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||||||
| 8334 | return destType; | ||||||||
| 8335 | } | ||||||||
| 8336 | return QualType(); | ||||||||
| 8337 | } | ||||||||
| 8338 | |||||||||
| 8339 | /// SuggestParentheses - Emit a note with a fixit hint that wraps | ||||||||
| 8340 | /// ParenRange in parentheses. | ||||||||
| 8341 | static void SuggestParentheses(Sema &Self, SourceLocation Loc, | ||||||||
| 8342 | const PartialDiagnostic &Note, | ||||||||
| 8343 | SourceRange ParenRange) { | ||||||||
| 8344 | SourceLocation EndLoc = Self.getLocForEndOfToken(ParenRange.getEnd()); | ||||||||
| 8345 | if (ParenRange.getBegin().isFileID() && ParenRange.getEnd().isFileID() && | ||||||||
| 8346 | EndLoc.isValid()) { | ||||||||
| 8347 | Self.Diag(Loc, Note) | ||||||||
| 8348 | << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") | ||||||||
| 8349 | << FixItHint::CreateInsertion(EndLoc, ")"); | ||||||||
| 8350 | } else { | ||||||||
| 8351 | // We can't display the parentheses, so just show the bare note. | ||||||||
| 8352 | Self.Diag(Loc, Note) << ParenRange; | ||||||||
| 8353 | } | ||||||||
| 8354 | } | ||||||||
| 8355 | |||||||||
| 8356 | static bool IsArithmeticOp(BinaryOperatorKind Opc) { | ||||||||
| 8357 | return BinaryOperator::isAdditiveOp(Opc) || | ||||||||
| 8358 | BinaryOperator::isMultiplicativeOp(Opc) || | ||||||||
| 8359 | BinaryOperator::isShiftOp(Opc) || Opc == BO_And || Opc == BO_Or; | ||||||||
| 8360 | // This only checks for bitwise-or and bitwise-and, but not bitwise-xor and | ||||||||
| 8361 | // not any of the logical operators. Bitwise-xor is commonly used as a | ||||||||
| 8362 | // logical-xor because there is no logical-xor operator. The logical | ||||||||
| 8363 | // operators, including uses of xor, have a high false positive rate for | ||||||||
| 8364 | // precedence warnings. | ||||||||
| 8365 | } | ||||||||
| 8366 | |||||||||
| 8367 | /// IsArithmeticBinaryExpr - Returns true if E is an arithmetic binary | ||||||||
| 8368 | /// expression, either using a built-in or overloaded operator, | ||||||||
| 8369 | /// and sets *OpCode to the opcode and *RHSExprs to the right-hand side | ||||||||
| 8370 | /// expression. | ||||||||
| 8371 | static bool IsArithmeticBinaryExpr(Expr *E, BinaryOperatorKind *Opcode, | ||||||||
| 8372 | Expr **RHSExprs) { | ||||||||
| 8373 | // Don't strip parenthesis: we should not warn if E is in parenthesis. | ||||||||
| 8374 | E = E->IgnoreImpCasts(); | ||||||||
| 8375 | E = E->IgnoreConversionOperator(); | ||||||||
| 8376 | E = E->IgnoreImpCasts(); | ||||||||
| 8377 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||||||
| 8378 | E = MTE->getSubExpr(); | ||||||||
| 8379 | E = E->IgnoreImpCasts(); | ||||||||
| 8380 | } | ||||||||
| 8381 | |||||||||
| 8382 | // Built-in binary operator. | ||||||||
| 8383 | if (BinaryOperator *OP = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 8384 | if (IsArithmeticOp(OP->getOpcode())) { | ||||||||
| 8385 | *Opcode = OP->getOpcode(); | ||||||||
| 8386 | *RHSExprs = OP->getRHS(); | ||||||||
| 8387 | return true; | ||||||||
| 8388 | } | ||||||||
| 8389 | } | ||||||||
| 8390 | |||||||||
| 8391 | // Overloaded operator. | ||||||||
| 8392 | if (CXXOperatorCallExpr *Call = dyn_cast<CXXOperatorCallExpr>(E)) { | ||||||||
| 8393 | if (Call->getNumArgs() != 2) | ||||||||
| 8394 | return false; | ||||||||
| 8395 | |||||||||
| 8396 | // Make sure this is really a binary operator that is safe to pass into | ||||||||
| 8397 | // BinaryOperator::getOverloadedOpcode(), e.g. it's not a subscript op. | ||||||||
| 8398 | OverloadedOperatorKind OO = Call->getOperator(); | ||||||||
| 8399 | if (OO < OO_Plus || OO > OO_Arrow || | ||||||||
| 8400 | OO == OO_PlusPlus || OO == OO_MinusMinus) | ||||||||
| 8401 | return false; | ||||||||
| 8402 | |||||||||
| 8403 | BinaryOperatorKind OpKind = BinaryOperator::getOverloadedOpcode(OO); | ||||||||
| 8404 | if (IsArithmeticOp(OpKind)) { | ||||||||
| 8405 | *Opcode = OpKind; | ||||||||
| 8406 | *RHSExprs = Call->getArg(1); | ||||||||
| 8407 | return true; | ||||||||
| 8408 | } | ||||||||
| 8409 | } | ||||||||
| 8410 | |||||||||
| 8411 | return false; | ||||||||
| 8412 | } | ||||||||
| 8413 | |||||||||
| 8414 | /// ExprLooksBoolean - Returns true if E looks boolean, i.e. it has boolean type | ||||||||
| 8415 | /// or is a logical expression such as (x==y) which has int type, but is | ||||||||
| 8416 | /// commonly interpreted as boolean. | ||||||||
| 8417 | static bool ExprLooksBoolean(Expr *E) { | ||||||||
| 8418 | E = E->IgnoreParenImpCasts(); | ||||||||
| 8419 | |||||||||
| 8420 | if (E->getType()->isBooleanType()) | ||||||||
| 8421 | return true; | ||||||||
| 8422 | if (BinaryOperator *OP = dyn_cast<BinaryOperator>(E)) | ||||||||
| 8423 | return OP->isComparisonOp() || OP->isLogicalOp(); | ||||||||
| 8424 | if (UnaryOperator *OP = dyn_cast<UnaryOperator>(E)) | ||||||||
| 8425 | return OP->getOpcode() == UO_LNot; | ||||||||
| 8426 | if (E->getType()->isPointerType()) | ||||||||
| 8427 | return true; | ||||||||
| 8428 | // FIXME: What about overloaded operator calls returning "unspecified boolean | ||||||||
| 8429 | // type"s (commonly pointer-to-members)? | ||||||||
| 8430 | |||||||||
| 8431 | return false; | ||||||||
| 8432 | } | ||||||||
| 8433 | |||||||||
| 8434 | /// DiagnoseConditionalPrecedence - Emit a warning when a conditional operator | ||||||||
| 8435 | /// and binary operator are mixed in a way that suggests the programmer assumed | ||||||||
| 8436 | /// the conditional operator has higher precedence, for example: | ||||||||
| 8437 | /// "int x = a + someBinaryCondition ? 1 : 2". | ||||||||
| 8438 | static void DiagnoseConditionalPrecedence(Sema &Self, | ||||||||
| 8439 | SourceLocation OpLoc, | ||||||||
| 8440 | Expr *Condition, | ||||||||
| 8441 | Expr *LHSExpr, | ||||||||
| 8442 | Expr *RHSExpr) { | ||||||||
| 8443 | BinaryOperatorKind CondOpcode; | ||||||||
| 8444 | Expr *CondRHS; | ||||||||
| 8445 | |||||||||
| 8446 | if (!IsArithmeticBinaryExpr(Condition, &CondOpcode, &CondRHS)) | ||||||||
| 8447 | return; | ||||||||
| 8448 | if (!ExprLooksBoolean(CondRHS)) | ||||||||
| 8449 | return; | ||||||||
| 8450 | |||||||||
| 8451 | // The condition is an arithmetic binary expression, with a right- | ||||||||
| 8452 | // hand side that looks boolean, so warn. | ||||||||
| 8453 | |||||||||
| 8454 | unsigned DiagID = BinaryOperator::isBitwiseOp(CondOpcode) | ||||||||
| 8455 | ? diag::warn_precedence_bitwise_conditional | ||||||||
| 8456 | : diag::warn_precedence_conditional; | ||||||||
| 8457 | |||||||||
| 8458 | Self.Diag(OpLoc, DiagID) | ||||||||
| 8459 | << Condition->getSourceRange() | ||||||||
| 8460 | << BinaryOperator::getOpcodeStr(CondOpcode); | ||||||||
| 8461 | |||||||||
| 8462 | SuggestParentheses( | ||||||||
| 8463 | Self, OpLoc, | ||||||||
| 8464 | Self.PDiag(diag::note_precedence_silence) | ||||||||
| 8465 | << BinaryOperator::getOpcodeStr(CondOpcode), | ||||||||
| 8466 | SourceRange(Condition->getBeginLoc(), Condition->getEndLoc())); | ||||||||
| 8467 | |||||||||
| 8468 | SuggestParentheses(Self, OpLoc, | ||||||||
| 8469 | Self.PDiag(diag::note_precedence_conditional_first), | ||||||||
| 8470 | SourceRange(CondRHS->getBeginLoc(), RHSExpr->getEndLoc())); | ||||||||
| 8471 | } | ||||||||
| 8472 | |||||||||
| 8473 | /// Compute the nullability of a conditional expression. | ||||||||
| 8474 | static QualType computeConditionalNullability(QualType ResTy, bool IsBin, | ||||||||
| 8475 | QualType LHSTy, QualType RHSTy, | ||||||||
| 8476 | ASTContext &Ctx) { | ||||||||
| 8477 | if (!ResTy->isAnyPointerType()) | ||||||||
| 8478 | return ResTy; | ||||||||
| 8479 | |||||||||
| 8480 | auto GetNullability = [&Ctx](QualType Ty) { | ||||||||
| 8481 | Optional<NullabilityKind> Kind = Ty->getNullability(Ctx); | ||||||||
| 8482 | if (Kind) | ||||||||
| 8483 | return *Kind; | ||||||||
| 8484 | return NullabilityKind::Unspecified; | ||||||||
| 8485 | }; | ||||||||
| 8486 | |||||||||
| 8487 | auto LHSKind = GetNullability(LHSTy), RHSKind = GetNullability(RHSTy); | ||||||||
| 8488 | NullabilityKind MergedKind; | ||||||||
| 8489 | |||||||||
| 8490 | // Compute nullability of a binary conditional expression. | ||||||||
| 8491 | if (IsBin) { | ||||||||
| 8492 | if (LHSKind == NullabilityKind::NonNull) | ||||||||
| 8493 | MergedKind = NullabilityKind::NonNull; | ||||||||
| 8494 | else | ||||||||
| 8495 | MergedKind = RHSKind; | ||||||||
| 8496 | // Compute nullability of a normal conditional expression. | ||||||||
| 8497 | } else { | ||||||||
| 8498 | if (LHSKind == NullabilityKind::Nullable || | ||||||||
| 8499 | RHSKind == NullabilityKind::Nullable) | ||||||||
| 8500 | MergedKind = NullabilityKind::Nullable; | ||||||||
| 8501 | else if (LHSKind == NullabilityKind::NonNull) | ||||||||
| 8502 | MergedKind = RHSKind; | ||||||||
| 8503 | else if (RHSKind == NullabilityKind::NonNull) | ||||||||
| 8504 | MergedKind = LHSKind; | ||||||||
| 8505 | else | ||||||||
| 8506 | MergedKind = NullabilityKind::Unspecified; | ||||||||
| 8507 | } | ||||||||
| 8508 | |||||||||
| 8509 | // Return if ResTy already has the correct nullability. | ||||||||
| 8510 | if (GetNullability(ResTy) == MergedKind) | ||||||||
| 8511 | return ResTy; | ||||||||
| 8512 | |||||||||
| 8513 | // Strip all nullability from ResTy. | ||||||||
| 8514 | while (ResTy->getNullability(Ctx)) | ||||||||
| 8515 | ResTy = ResTy.getSingleStepDesugaredType(Ctx); | ||||||||
| 8516 | |||||||||
| 8517 | // Create a new AttributedType with the new nullability kind. | ||||||||
| 8518 | auto NewAttr = AttributedType::getNullabilityAttrKind(MergedKind); | ||||||||
| 8519 | return Ctx.getAttributedType(NewAttr, ResTy, ResTy); | ||||||||
| 8520 | } | ||||||||
| 8521 | |||||||||
| 8522 | /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null | ||||||||
| 8523 | /// in the case of a the GNU conditional expr extension. | ||||||||
| 8524 | ExprResult Sema::ActOnConditionalOp(SourceLocation QuestionLoc, | ||||||||
| 8525 | SourceLocation ColonLoc, | ||||||||
| 8526 | Expr *CondExpr, Expr *LHSExpr, | ||||||||
| 8527 | Expr *RHSExpr) { | ||||||||
| 8528 | if (!getLangOpts().CPlusPlus) { | ||||||||
| 8529 | // C cannot handle TypoExpr nodes in the condition because it | ||||||||
| 8530 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||||||
| 8531 | // been dealt with before checking the operands. | ||||||||
| 8532 | ExprResult CondResult = CorrectDelayedTyposInExpr(CondExpr); | ||||||||
| 8533 | ExprResult LHSResult = CorrectDelayedTyposInExpr(LHSExpr); | ||||||||
| 8534 | ExprResult RHSResult = CorrectDelayedTyposInExpr(RHSExpr); | ||||||||
| 8535 | |||||||||
| 8536 | if (!CondResult.isUsable()) | ||||||||
| 8537 | return ExprError(); | ||||||||
| 8538 | |||||||||
| 8539 | if (LHSExpr) { | ||||||||
| 8540 | if (!LHSResult.isUsable()) | ||||||||
| 8541 | return ExprError(); | ||||||||
| 8542 | } | ||||||||
| 8543 | |||||||||
| 8544 | if (!RHSResult.isUsable()) | ||||||||
| 8545 | return ExprError(); | ||||||||
| 8546 | |||||||||
| 8547 | CondExpr = CondResult.get(); | ||||||||
| 8548 | LHSExpr = LHSResult.get(); | ||||||||
| 8549 | RHSExpr = RHSResult.get(); | ||||||||
| 8550 | } | ||||||||
| 8551 | |||||||||
| 8552 | // If this is the gnu "x ?: y" extension, analyze the types as though the LHS | ||||||||
| 8553 | // was the condition. | ||||||||
| 8554 | OpaqueValueExpr *opaqueValue = nullptr; | ||||||||
| 8555 | Expr *commonExpr = nullptr; | ||||||||
| 8556 | if (!LHSExpr) { | ||||||||
| 8557 | commonExpr = CondExpr; | ||||||||
| 8558 | // Lower out placeholder types first. This is important so that we don't | ||||||||
| 8559 | // try to capture a placeholder. This happens in few cases in C++; such | ||||||||
| 8560 | // as Objective-C++'s dictionary subscripting syntax. | ||||||||
| 8561 | if (commonExpr->hasPlaceholderType()) { | ||||||||
| 8562 | ExprResult result = CheckPlaceholderExpr(commonExpr); | ||||||||
| 8563 | if (!result.isUsable()) return ExprError(); | ||||||||
| 8564 | commonExpr = result.get(); | ||||||||
| 8565 | } | ||||||||
| 8566 | // We usually want to apply unary conversions *before* saving, except | ||||||||
| 8567 | // in the special case of a C++ l-value conditional. | ||||||||
| 8568 | if (!(getLangOpts().CPlusPlus | ||||||||
| 8569 | && !commonExpr->isTypeDependent() | ||||||||
| 8570 | && commonExpr->getValueKind() == RHSExpr->getValueKind() | ||||||||
| 8571 | && commonExpr->isGLValue() | ||||||||
| 8572 | && commonExpr->isOrdinaryOrBitFieldObject() | ||||||||
| 8573 | && RHSExpr->isOrdinaryOrBitFieldObject() | ||||||||
| 8574 | && Context.hasSameType(commonExpr->getType(), RHSExpr->getType()))) { | ||||||||
| 8575 | ExprResult commonRes = UsualUnaryConversions(commonExpr); | ||||||||
| 8576 | if (commonRes.isInvalid()) | ||||||||
| 8577 | return ExprError(); | ||||||||
| 8578 | commonExpr = commonRes.get(); | ||||||||
| 8579 | } | ||||||||
| 8580 | |||||||||
| 8581 | // If the common expression is a class or array prvalue, materialize it | ||||||||
| 8582 | // so that we can safely refer to it multiple times. | ||||||||
| 8583 | if (commonExpr->isRValue() && (commonExpr->getType()->isRecordType() || | ||||||||
| 8584 | commonExpr->getType()->isArrayType())) { | ||||||||
| 8585 | ExprResult MatExpr = TemporaryMaterializationConversion(commonExpr); | ||||||||
| 8586 | if (MatExpr.isInvalid()) | ||||||||
| 8587 | return ExprError(); | ||||||||
| 8588 | commonExpr = MatExpr.get(); | ||||||||
| 8589 | } | ||||||||
| 8590 | |||||||||
| 8591 | opaqueValue = new (Context) OpaqueValueExpr(commonExpr->getExprLoc(), | ||||||||
| 8592 | commonExpr->getType(), | ||||||||
| 8593 | commonExpr->getValueKind(), | ||||||||
| 8594 | commonExpr->getObjectKind(), | ||||||||
| 8595 | commonExpr); | ||||||||
| 8596 | LHSExpr = CondExpr = opaqueValue; | ||||||||
| 8597 | } | ||||||||
| 8598 | |||||||||
| 8599 | QualType LHSTy = LHSExpr->getType(), RHSTy = RHSExpr->getType(); | ||||||||
| 8600 | ExprValueKind VK = VK_RValue; | ||||||||
| 8601 | ExprObjectKind OK = OK_Ordinary; | ||||||||
| 8602 | ExprResult Cond = CondExpr, LHS = LHSExpr, RHS = RHSExpr; | ||||||||
| 8603 | QualType result = CheckConditionalOperands(Cond, LHS, RHS, | ||||||||
| 8604 | VK, OK, QuestionLoc); | ||||||||
| 8605 | if (result.isNull() || Cond.isInvalid() || LHS.isInvalid() || | ||||||||
| 8606 | RHS.isInvalid()) | ||||||||
| 8607 | return ExprError(); | ||||||||
| 8608 | |||||||||
| 8609 | DiagnoseConditionalPrecedence(*this, QuestionLoc, Cond.get(), LHS.get(), | ||||||||
| 8610 | RHS.get()); | ||||||||
| 8611 | |||||||||
| 8612 | CheckBoolLikeConversion(Cond.get(), QuestionLoc); | ||||||||
| 8613 | |||||||||
| 8614 | result = computeConditionalNullability(result, commonExpr, LHSTy, RHSTy, | ||||||||
| 8615 | Context); | ||||||||
| 8616 | |||||||||
| 8617 | if (!commonExpr) | ||||||||
| 8618 | return new (Context) | ||||||||
| 8619 | ConditionalOperator(Cond.get(), QuestionLoc, LHS.get(), ColonLoc, | ||||||||
| 8620 | RHS.get(), result, VK, OK); | ||||||||
| 8621 | |||||||||
| 8622 | return new (Context) BinaryConditionalOperator( | ||||||||
| 8623 | commonExpr, opaqueValue, Cond.get(), LHS.get(), RHS.get(), QuestionLoc, | ||||||||
| 8624 | ColonLoc, result, VK, OK); | ||||||||
| 8625 | } | ||||||||
| 8626 | |||||||||
| 8627 | // Check if we have a conversion between incompatible cmse function pointer | ||||||||
| 8628 | // types, that is, a conversion between a function pointer with the | ||||||||
| 8629 | // cmse_nonsecure_call attribute and one without. | ||||||||
| 8630 | static bool IsInvalidCmseNSCallConversion(Sema &S, QualType FromType, | ||||||||
| 8631 | QualType ToType) { | ||||||||
| 8632 | if (const auto *ToFn = | ||||||||
| 8633 | dyn_cast<FunctionType>(S.Context.getCanonicalType(ToType))) { | ||||||||
| 8634 | if (const auto *FromFn = | ||||||||
| 8635 | dyn_cast<FunctionType>(S.Context.getCanonicalType(FromType))) { | ||||||||
| 8636 | FunctionType::ExtInfo ToEInfo = ToFn->getExtInfo(); | ||||||||
| 8637 | FunctionType::ExtInfo FromEInfo = FromFn->getExtInfo(); | ||||||||
| 8638 | |||||||||
| 8639 | return ToEInfo.getCmseNSCall() != FromEInfo.getCmseNSCall(); | ||||||||
| 8640 | } | ||||||||
| 8641 | } | ||||||||
| 8642 | return false; | ||||||||
| 8643 | } | ||||||||
| 8644 | |||||||||
| 8645 | // checkPointerTypesForAssignment - This is a very tricky routine (despite | ||||||||
| 8646 | // being closely modeled after the C99 spec:-). The odd characteristic of this | ||||||||
| 8647 | // routine is it effectively iqnores the qualifiers on the top level pointee. | ||||||||
| 8648 | // This circumvents the usual type rules specified in 6.2.7p1 & 6.7.5.[1-3]. | ||||||||
| 8649 | // FIXME: add a couple examples in this comment. | ||||||||
| 8650 | static Sema::AssignConvertType | ||||||||
| 8651 | checkPointerTypesForAssignment(Sema &S, QualType LHSType, QualType RHSType) { | ||||||||
| 8652 | assert(LHSType.isCanonical() && "LHS not canonicalized!")((LHSType.isCanonical() && "LHS not canonicalized!") ? static_cast<void> (0) : __assert_fail ("LHSType.isCanonical() && \"LHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8652, __PRETTY_FUNCTION__)); | ||||||||
| 8653 | assert(RHSType.isCanonical() && "RHS not canonicalized!")((RHSType.isCanonical() && "RHS not canonicalized!") ? static_cast<void> (0) : __assert_fail ("RHSType.isCanonical() && \"RHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8653, __PRETTY_FUNCTION__)); | ||||||||
| 8654 | |||||||||
| 8655 | // get the "pointed to" type (ignoring qualifiers at the top level) | ||||||||
| 8656 | const Type *lhptee, *rhptee; | ||||||||
| 8657 | Qualifiers lhq, rhq; | ||||||||
| 8658 | std::tie(lhptee, lhq) = | ||||||||
| 8659 | cast<PointerType>(LHSType)->getPointeeType().split().asPair(); | ||||||||
| 8660 | std::tie(rhptee, rhq) = | ||||||||
| 8661 | cast<PointerType>(RHSType)->getPointeeType().split().asPair(); | ||||||||
| 8662 | |||||||||
| 8663 | Sema::AssignConvertType ConvTy = Sema::Compatible; | ||||||||
| 8664 | |||||||||
| 8665 | // C99 6.5.16.1p1: This following citation is common to constraints | ||||||||
| 8666 | // 3 & 4 (below). ...and the type *pointed to* by the left has all the | ||||||||
| 8667 | // qualifiers of the type *pointed to* by the right; | ||||||||
| 8668 | |||||||||
| 8669 | // As a special case, 'non-__weak A *' -> 'non-__weak const *' is okay. | ||||||||
| 8670 | if (lhq.getObjCLifetime() != rhq.getObjCLifetime() && | ||||||||
| 8671 | lhq.compatiblyIncludesObjCLifetime(rhq)) { | ||||||||
| 8672 | // Ignore lifetime for further calculation. | ||||||||
| 8673 | lhq.removeObjCLifetime(); | ||||||||
| 8674 | rhq.removeObjCLifetime(); | ||||||||
| 8675 | } | ||||||||
| 8676 | |||||||||
| 8677 | if (!lhq.compatiblyIncludes(rhq)) { | ||||||||
| 8678 | // Treat address-space mismatches as fatal. | ||||||||
| 8679 | if (!lhq.isAddressSpaceSupersetOf(rhq)) | ||||||||
| 8680 | return Sema::IncompatiblePointerDiscardsQualifiers; | ||||||||
| 8681 | |||||||||
| 8682 | // It's okay to add or remove GC or lifetime qualifiers when converting to | ||||||||
| 8683 | // and from void*. | ||||||||
| 8684 | else if (lhq.withoutObjCGCAttr().withoutObjCLifetime() | ||||||||
| 8685 | .compatiblyIncludes( | ||||||||
| 8686 | rhq.withoutObjCGCAttr().withoutObjCLifetime()) | ||||||||
| 8687 | && (lhptee->isVoidType() || rhptee->isVoidType())) | ||||||||
| 8688 | ; // keep old | ||||||||
| 8689 | |||||||||
| 8690 | // Treat lifetime mismatches as fatal. | ||||||||
| 8691 | else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) | ||||||||
| 8692 | ConvTy = Sema::IncompatiblePointerDiscardsQualifiers; | ||||||||
| 8693 | |||||||||
| 8694 | // For GCC/MS compatibility, other qualifier mismatches are treated | ||||||||
| 8695 | // as still compatible in C. | ||||||||
| 8696 | else ConvTy = Sema::CompatiblePointerDiscardsQualifiers; | ||||||||
| 8697 | } | ||||||||
| 8698 | |||||||||
| 8699 | // C99 6.5.16.1p1 (constraint 4): If one operand is a pointer to an object or | ||||||||
| 8700 | // incomplete type and the other is a pointer to a qualified or unqualified | ||||||||
| 8701 | // version of void... | ||||||||
| 8702 | if (lhptee->isVoidType()) { | ||||||||
| 8703 | if (rhptee->isIncompleteOrObjectType()) | ||||||||
| 8704 | return ConvTy; | ||||||||
| 8705 | |||||||||
| 8706 | // As an extension, we allow cast to/from void* to function pointer. | ||||||||
| 8707 | assert(rhptee->isFunctionType())((rhptee->isFunctionType()) ? static_cast<void> (0) : __assert_fail ("rhptee->isFunctionType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8707, __PRETTY_FUNCTION__)); | ||||||||
| 8708 | return Sema::FunctionVoidPointer; | ||||||||
| 8709 | } | ||||||||
| 8710 | |||||||||
| 8711 | if (rhptee->isVoidType()) { | ||||||||
| 8712 | if (lhptee->isIncompleteOrObjectType()) | ||||||||
| 8713 | return ConvTy; | ||||||||
| 8714 | |||||||||
| 8715 | // As an extension, we allow cast to/from void* to function pointer. | ||||||||
| 8716 | assert(lhptee->isFunctionType())((lhptee->isFunctionType()) ? static_cast<void> (0) : __assert_fail ("lhptee->isFunctionType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8716, __PRETTY_FUNCTION__)); | ||||||||
| 8717 | return Sema::FunctionVoidPointer; | ||||||||
| 8718 | } | ||||||||
| 8719 | |||||||||
| 8720 | // C99 6.5.16.1p1 (constraint 3): both operands are pointers to qualified or | ||||||||
| 8721 | // unqualified versions of compatible types, ... | ||||||||
| 8722 | QualType ltrans = QualType(lhptee, 0), rtrans = QualType(rhptee, 0); | ||||||||
| 8723 | if (!S.Context.typesAreCompatible(ltrans, rtrans)) { | ||||||||
| 8724 | // Check if the pointee types are compatible ignoring the sign. | ||||||||
| 8725 | // We explicitly check for char so that we catch "char" vs | ||||||||
| 8726 | // "unsigned char" on systems where "char" is unsigned. | ||||||||
| 8727 | if (lhptee->isCharType()) | ||||||||
| 8728 | ltrans = S.Context.UnsignedCharTy; | ||||||||
| 8729 | else if (lhptee->hasSignedIntegerRepresentation()) | ||||||||
| 8730 | ltrans = S.Context.getCorrespondingUnsignedType(ltrans); | ||||||||
| 8731 | |||||||||
| 8732 | if (rhptee->isCharType()) | ||||||||
| 8733 | rtrans = S.Context.UnsignedCharTy; | ||||||||
| 8734 | else if (rhptee->hasSignedIntegerRepresentation()) | ||||||||
| 8735 | rtrans = S.Context.getCorrespondingUnsignedType(rtrans); | ||||||||
| 8736 | |||||||||
| 8737 | if (ltrans == rtrans) { | ||||||||
| 8738 | // Types are compatible ignoring the sign. Qualifier incompatibility | ||||||||
| 8739 | // takes priority over sign incompatibility because the sign | ||||||||
| 8740 | // warning can be disabled. | ||||||||
| 8741 | if (ConvTy != Sema::Compatible) | ||||||||
| 8742 | return ConvTy; | ||||||||
| 8743 | |||||||||
| 8744 | return Sema::IncompatiblePointerSign; | ||||||||
| 8745 | } | ||||||||
| 8746 | |||||||||
| 8747 | // If we are a multi-level pointer, it's possible that our issue is simply | ||||||||
| 8748 | // one of qualification - e.g. char ** -> const char ** is not allowed. If | ||||||||
| 8749 | // the eventual target type is the same and the pointers have the same | ||||||||
| 8750 | // level of indirection, this must be the issue. | ||||||||
| 8751 | if (isa<PointerType>(lhptee) && isa<PointerType>(rhptee)) { | ||||||||
| 8752 | do { | ||||||||
| 8753 | std::tie(lhptee, lhq) = | ||||||||
| 8754 | cast<PointerType>(lhptee)->getPointeeType().split().asPair(); | ||||||||
| 8755 | std::tie(rhptee, rhq) = | ||||||||
| 8756 | cast<PointerType>(rhptee)->getPointeeType().split().asPair(); | ||||||||
| 8757 | |||||||||
| 8758 | // Inconsistent address spaces at this point is invalid, even if the | ||||||||
| 8759 | // address spaces would be compatible. | ||||||||
| 8760 | // FIXME: This doesn't catch address space mismatches for pointers of | ||||||||
| 8761 | // different nesting levels, like: | ||||||||
| 8762 | // __local int *** a; | ||||||||
| 8763 | // int ** b = a; | ||||||||
| 8764 | // It's not clear how to actually determine when such pointers are | ||||||||
| 8765 | // invalidly incompatible. | ||||||||
| 8766 | if (lhq.getAddressSpace() != rhq.getAddressSpace()) | ||||||||
| 8767 | return Sema::IncompatibleNestedPointerAddressSpaceMismatch; | ||||||||
| 8768 | |||||||||
| 8769 | } while (isa<PointerType>(lhptee) && isa<PointerType>(rhptee)); | ||||||||
| 8770 | |||||||||
| 8771 | if (lhptee == rhptee) | ||||||||
| 8772 | return Sema::IncompatibleNestedPointerQualifiers; | ||||||||
| 8773 | } | ||||||||
| 8774 | |||||||||
| 8775 | // General pointer incompatibility takes priority over qualifiers. | ||||||||
| 8776 | if (RHSType->isFunctionPointerType() && LHSType->isFunctionPointerType()) | ||||||||
| 8777 | return Sema::IncompatibleFunctionPointer; | ||||||||
| 8778 | return Sema::IncompatiblePointer; | ||||||||
| 8779 | } | ||||||||
| 8780 | if (!S.getLangOpts().CPlusPlus && | ||||||||
| 8781 | S.IsFunctionConversion(ltrans, rtrans, ltrans)) | ||||||||
| 8782 | return Sema::IncompatibleFunctionPointer; | ||||||||
| 8783 | if (IsInvalidCmseNSCallConversion(S, ltrans, rtrans)) | ||||||||
| 8784 | return Sema::IncompatibleFunctionPointer; | ||||||||
| 8785 | return ConvTy; | ||||||||
| 8786 | } | ||||||||
| 8787 | |||||||||
| 8788 | /// checkBlockPointerTypesForAssignment - This routine determines whether two | ||||||||
| 8789 | /// block pointer types are compatible or whether a block and normal pointer | ||||||||
| 8790 | /// are compatible. It is more restrict than comparing two function pointer | ||||||||
| 8791 | // types. | ||||||||
| 8792 | static Sema::AssignConvertType | ||||||||
| 8793 | checkBlockPointerTypesForAssignment(Sema &S, QualType LHSType, | ||||||||
| 8794 | QualType RHSType) { | ||||||||
| 8795 | assert(LHSType.isCanonical() && "LHS not canonicalized!")((LHSType.isCanonical() && "LHS not canonicalized!") ? static_cast<void> (0) : __assert_fail ("LHSType.isCanonical() && \"LHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8795, __PRETTY_FUNCTION__)); | ||||||||
| 8796 | assert(RHSType.isCanonical() && "RHS not canonicalized!")((RHSType.isCanonical() && "RHS not canonicalized!") ? static_cast<void> (0) : __assert_fail ("RHSType.isCanonical() && \"RHS not canonicalized!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8796, __PRETTY_FUNCTION__)); | ||||||||
| 8797 | |||||||||
| 8798 | QualType lhptee, rhptee; | ||||||||
| 8799 | |||||||||
| 8800 | // get the "pointed to" type (ignoring qualifiers at the top level) | ||||||||
| 8801 | lhptee = cast<BlockPointerType>(LHSType)->getPointeeType(); | ||||||||
| 8802 | rhptee = cast<BlockPointerType>(RHSType)->getPointeeType(); | ||||||||
| 8803 | |||||||||
| 8804 | // In C++, the types have to match exactly. | ||||||||
| 8805 | if (S.getLangOpts().CPlusPlus) | ||||||||
| 8806 | return Sema::IncompatibleBlockPointer; | ||||||||
| 8807 | |||||||||
| 8808 | Sema::AssignConvertType ConvTy = Sema::Compatible; | ||||||||
| 8809 | |||||||||
| 8810 | // For blocks we enforce that qualifiers are identical. | ||||||||
| 8811 | Qualifiers LQuals = lhptee.getLocalQualifiers(); | ||||||||
| 8812 | Qualifiers RQuals = rhptee.getLocalQualifiers(); | ||||||||
| 8813 | if (S.getLangOpts().OpenCL) { | ||||||||
| 8814 | LQuals.removeAddressSpace(); | ||||||||
| 8815 | RQuals.removeAddressSpace(); | ||||||||
| 8816 | } | ||||||||
| 8817 | if (LQuals != RQuals) | ||||||||
| 8818 | ConvTy = Sema::CompatiblePointerDiscardsQualifiers; | ||||||||
| 8819 | |||||||||
| 8820 | // FIXME: OpenCL doesn't define the exact compile time semantics for a block | ||||||||
| 8821 | // assignment. | ||||||||
| 8822 | // The current behavior is similar to C++ lambdas. A block might be | ||||||||
| 8823 | // assigned to a variable iff its return type and parameters are compatible | ||||||||
| 8824 | // (C99 6.2.7) with the corresponding return type and parameters of the LHS of | ||||||||
| 8825 | // an assignment. Presumably it should behave in way that a function pointer | ||||||||
| 8826 | // assignment does in C, so for each parameter and return type: | ||||||||
| 8827 | // * CVR and address space of LHS should be a superset of CVR and address | ||||||||
| 8828 | // space of RHS. | ||||||||
| 8829 | // * unqualified types should be compatible. | ||||||||
| 8830 | if (S.getLangOpts().OpenCL) { | ||||||||
| 8831 | if (!S.Context.typesAreBlockPointerCompatible( | ||||||||
| 8832 | S.Context.getQualifiedType(LHSType.getUnqualifiedType(), LQuals), | ||||||||
| 8833 | S.Context.getQualifiedType(RHSType.getUnqualifiedType(), RQuals))) | ||||||||
| 8834 | return Sema::IncompatibleBlockPointer; | ||||||||
| 8835 | } else if (!S.Context.typesAreBlockPointerCompatible(LHSType, RHSType)) | ||||||||
| 8836 | return Sema::IncompatibleBlockPointer; | ||||||||
| 8837 | |||||||||
| 8838 | return ConvTy; | ||||||||
| 8839 | } | ||||||||
| 8840 | |||||||||
| 8841 | /// checkObjCPointerTypesForAssignment - Compares two objective-c pointer types | ||||||||
| 8842 | /// for assignment compatibility. | ||||||||
| 8843 | static Sema::AssignConvertType | ||||||||
| 8844 | checkObjCPointerTypesForAssignment(Sema &S, QualType LHSType, | ||||||||
| 8845 | QualType RHSType) { | ||||||||
| 8846 | assert(LHSType.isCanonical() && "LHS was not canonicalized!")((LHSType.isCanonical() && "LHS was not canonicalized!" ) ? static_cast<void> (0) : __assert_fail ("LHSType.isCanonical() && \"LHS was not canonicalized!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8846, __PRETTY_FUNCTION__)); | ||||||||
| 8847 | assert(RHSType.isCanonical() && "RHS was not canonicalized!")((RHSType.isCanonical() && "RHS was not canonicalized!" ) ? static_cast<void> (0) : __assert_fail ("RHSType.isCanonical() && \"RHS was not canonicalized!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 8847, __PRETTY_FUNCTION__)); | ||||||||
| 8848 | |||||||||
| 8849 | if (LHSType->isObjCBuiltinType()) { | ||||||||
| 8850 | // Class is not compatible with ObjC object pointers. | ||||||||
| 8851 | if (LHSType->isObjCClassType() && !RHSType->isObjCBuiltinType() && | ||||||||
| 8852 | !RHSType->isObjCQualifiedClassType()) | ||||||||
| 8853 | return Sema::IncompatiblePointer; | ||||||||
| 8854 | return Sema::Compatible; | ||||||||
| 8855 | } | ||||||||
| 8856 | if (RHSType->isObjCBuiltinType()) { | ||||||||
| 8857 | if (RHSType->isObjCClassType() && !LHSType->isObjCBuiltinType() && | ||||||||
| 8858 | !LHSType->isObjCQualifiedClassType()) | ||||||||
| 8859 | return Sema::IncompatiblePointer; | ||||||||
| 8860 | return Sema::Compatible; | ||||||||
| 8861 | } | ||||||||
| 8862 | QualType lhptee = LHSType->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
| 8863 | QualType rhptee = RHSType->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||||||
| 8864 | |||||||||
| 8865 | if (!lhptee.isAtLeastAsQualifiedAs(rhptee) && | ||||||||
| 8866 | // make an exception for id<P> | ||||||||
| 8867 | !LHSType->isObjCQualifiedIdType()) | ||||||||
| 8868 | return Sema::CompatiblePointerDiscardsQualifiers; | ||||||||
| 8869 | |||||||||
| 8870 | if (S.Context.typesAreCompatible(LHSType, RHSType)) | ||||||||
| 8871 | return Sema::Compatible; | ||||||||
| 8872 | if (LHSType->isObjCQualifiedIdType() || RHSType->isObjCQualifiedIdType()) | ||||||||
| 8873 | return Sema::IncompatibleObjCQualifiedId; | ||||||||
| 8874 | return Sema::IncompatiblePointer; | ||||||||
| 8875 | } | ||||||||
| 8876 | |||||||||
| 8877 | Sema::AssignConvertType | ||||||||
| 8878 | Sema::CheckAssignmentConstraints(SourceLocation Loc, | ||||||||
| 8879 | QualType LHSType, QualType RHSType) { | ||||||||
| 8880 | // Fake up an opaque expression. We don't actually care about what | ||||||||
| 8881 | // cast operations are required, so if CheckAssignmentConstraints | ||||||||
| 8882 | // adds casts to this they'll be wasted, but fortunately that doesn't | ||||||||
| 8883 | // usually happen on valid code. | ||||||||
| 8884 | OpaqueValueExpr RHSExpr(Loc, RHSType, VK_RValue); | ||||||||
| 8885 | ExprResult RHSPtr = &RHSExpr; | ||||||||
| 8886 | CastKind K; | ||||||||
| 8887 | |||||||||
| 8888 | return CheckAssignmentConstraints(LHSType, RHSPtr, K, /*ConvertRHS=*/false); | ||||||||
| 8889 | } | ||||||||
| 8890 | |||||||||
| 8891 | /// This helper function returns true if QT is a vector type that has element | ||||||||
| 8892 | /// type ElementType. | ||||||||
| 8893 | static bool isVector(QualType QT, QualType ElementType) { | ||||||||
| 8894 | if (const VectorType *VT = QT->getAs<VectorType>()) | ||||||||
| 8895 | return VT->getElementType().getCanonicalType() == ElementType; | ||||||||
| 8896 | return false; | ||||||||
| 8897 | } | ||||||||
| 8898 | |||||||||
| 8899 | /// CheckAssignmentConstraints (C99 6.5.16) - This routine currently | ||||||||
| 8900 | /// has code to accommodate several GCC extensions when type checking | ||||||||
| 8901 | /// pointers. Here are some objectionable examples that GCC considers warnings: | ||||||||
| 8902 | /// | ||||||||
| 8903 | /// int a, *pint; | ||||||||
| 8904 | /// short *pshort; | ||||||||
| 8905 | /// struct foo *pfoo; | ||||||||
| 8906 | /// | ||||||||
| 8907 | /// pint = pshort; // warning: assignment from incompatible pointer type | ||||||||
| 8908 | /// a = pint; // warning: assignment makes integer from pointer without a cast | ||||||||
| 8909 | /// pint = a; // warning: assignment makes pointer from integer without a cast | ||||||||
| 8910 | /// pint = pfoo; // warning: assignment from incompatible pointer type | ||||||||
| 8911 | /// | ||||||||
| 8912 | /// As a result, the code for dealing with pointers is more complex than the | ||||||||
| 8913 | /// C99 spec dictates. | ||||||||
| 8914 | /// | ||||||||
| 8915 | /// Sets 'Kind' for any result kind except Incompatible. | ||||||||
| 8916 | Sema::AssignConvertType | ||||||||
| 8917 | Sema::CheckAssignmentConstraints(QualType LHSType, ExprResult &RHS, | ||||||||
| 8918 | CastKind &Kind, bool ConvertRHS) { | ||||||||
| 8919 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 8920 | QualType OrigLHSType = LHSType; | ||||||||
| 8921 | |||||||||
| 8922 | // Get canonical types. We're not formatting these types, just comparing | ||||||||
| 8923 | // them. | ||||||||
| 8924 | LHSType = Context.getCanonicalType(LHSType).getUnqualifiedType(); | ||||||||
| 8925 | RHSType = Context.getCanonicalType(RHSType).getUnqualifiedType(); | ||||||||
| 8926 | |||||||||
| 8927 | // Common case: no conversion required. | ||||||||
| 8928 | if (LHSType == RHSType) { | ||||||||
| |||||||||
| 8929 | Kind = CK_NoOp; | ||||||||
| 8930 | return Compatible; | ||||||||
| 8931 | } | ||||||||
| 8932 | |||||||||
| 8933 | // If we have an atomic type, try a non-atomic assignment, then just add an | ||||||||
| 8934 | // atomic qualification step. | ||||||||
| 8935 | if (const AtomicType *AtomicTy
| ||||||||
| 8936 | Sema::AssignConvertType result = | ||||||||
| 8937 | CheckAssignmentConstraints(AtomicTy->getValueType(), RHS, Kind); | ||||||||
| 8938 | if (result != Compatible) | ||||||||
| 8939 | return result; | ||||||||
| 8940 | if (Kind != CK_NoOp && ConvertRHS) | ||||||||
| 8941 | RHS = ImpCastExprToType(RHS.get(), AtomicTy->getValueType(), Kind); | ||||||||
| 8942 | Kind = CK_NonAtomicToAtomic; | ||||||||
| 8943 | return Compatible; | ||||||||
| 8944 | } | ||||||||
| 8945 | |||||||||
| 8946 | // If the left-hand side is a reference type, then we are in a | ||||||||
| 8947 | // (rare!) case where we've allowed the use of references in C, | ||||||||
| 8948 | // e.g., as a parameter type in a built-in function. In this case, | ||||||||
| 8949 | // just make sure that the type referenced is compatible with the | ||||||||
| 8950 | // right-hand side type. The caller is responsible for adjusting | ||||||||
| 8951 | // LHSType so that the resulting expression does not have reference | ||||||||
| 8952 | // type. | ||||||||
| 8953 | if (const ReferenceType *LHSTypeRef
| ||||||||
| 8954 | if (Context.typesAreCompatible(LHSTypeRef->getPointeeType(), RHSType)) { | ||||||||
| 8955 | Kind = CK_LValueBitCast; | ||||||||
| 8956 | return Compatible; | ||||||||
| 8957 | } | ||||||||
| 8958 | return Incompatible; | ||||||||
| 8959 | } | ||||||||
| 8960 | |||||||||
| 8961 | // Allow scalar to ExtVector assignments, and assignments of an ExtVector type | ||||||||
| 8962 | // to the same ExtVector type. | ||||||||
| 8963 | if (LHSType->isExtVectorType()) { | ||||||||
| 8964 | if (RHSType->isExtVectorType()) | ||||||||
| 8965 | return Incompatible; | ||||||||
| 8966 | if (RHSType->isArithmeticType()) { | ||||||||
| 8967 | // CK_VectorSplat does T -> vector T, so first cast to the element type. | ||||||||
| 8968 | if (ConvertRHS) | ||||||||
| 8969 | RHS = prepareVectorSplat(LHSType, RHS.get()); | ||||||||
| 8970 | Kind = CK_VectorSplat; | ||||||||
| 8971 | return Compatible; | ||||||||
| 8972 | } | ||||||||
| 8973 | } | ||||||||
| 8974 | |||||||||
| 8975 | // Conversions to or from vector type. | ||||||||
| 8976 | if (LHSType->isVectorType() || RHSType->isVectorType()) { | ||||||||
| 8977 | if (LHSType->isVectorType() && RHSType->isVectorType()) { | ||||||||
| 8978 | // Allow assignments of an AltiVec vector type to an equivalent GCC | ||||||||
| 8979 | // vector type and vice versa | ||||||||
| 8980 | if (Context.areCompatibleVectorTypes(LHSType, RHSType)) { | ||||||||
| 8981 | Kind = CK_BitCast; | ||||||||
| 8982 | return Compatible; | ||||||||
| 8983 | } | ||||||||
| 8984 | |||||||||
| 8985 | // If we are allowing lax vector conversions, and LHS and RHS are both | ||||||||
| 8986 | // vectors, the total size only needs to be the same. This is a bitcast; | ||||||||
| 8987 | // no bits are changed but the result type is different. | ||||||||
| 8988 | if (isLaxVectorConversion(RHSType, LHSType)) { | ||||||||
| 8989 | Kind = CK_BitCast; | ||||||||
| 8990 | return IncompatibleVectors; | ||||||||
| 8991 | } | ||||||||
| 8992 | } | ||||||||
| 8993 | |||||||||
| 8994 | // When the RHS comes from another lax conversion (e.g. binops between | ||||||||
| 8995 | // scalars and vectors) the result is canonicalized as a vector. When the | ||||||||
| 8996 | // LHS is also a vector, the lax is allowed by the condition above. Handle | ||||||||
| 8997 | // the case where LHS is a scalar. | ||||||||
| 8998 | if (LHSType->isScalarType()) { | ||||||||
| 8999 | const VectorType *VecType = RHSType->getAs<VectorType>(); | ||||||||
| 9000 | if (VecType && VecType->getNumElements() == 1 && | ||||||||
| 9001 | isLaxVectorConversion(RHSType, LHSType)) { | ||||||||
| 9002 | ExprResult *VecExpr = &RHS; | ||||||||
| 9003 | *VecExpr = ImpCastExprToType(VecExpr->get(), LHSType, CK_BitCast); | ||||||||
| 9004 | Kind = CK_BitCast; | ||||||||
| 9005 | return Compatible; | ||||||||
| 9006 | } | ||||||||
| 9007 | } | ||||||||
| 9008 | |||||||||
| 9009 | return Incompatible; | ||||||||
| 9010 | } | ||||||||
| 9011 | |||||||||
| 9012 | // Diagnose attempts to convert between __float128 and long double where | ||||||||
| 9013 | // such conversions currently can't be handled. | ||||||||
| 9014 | if (unsupportedTypeConversion(*this, LHSType, RHSType)) | ||||||||
| 9015 | return Incompatible; | ||||||||
| 9016 | |||||||||
| 9017 | // Disallow assigning a _Complex to a real type in C++ mode since it simply | ||||||||
| 9018 | // discards the imaginary part. | ||||||||
| 9019 | if (getLangOpts().CPlusPlus && RHSType->getAs<ComplexType>() && | ||||||||
| 9020 | !LHSType->getAs<ComplexType>()) | ||||||||
| 9021 | return Incompatible; | ||||||||
| 9022 | |||||||||
| 9023 | // Arithmetic conversions. | ||||||||
| 9024 | if (LHSType->isArithmeticType() && RHSType->isArithmeticType() && | ||||||||
| 9025 | !(getLangOpts().CPlusPlus && LHSType->isEnumeralType())) { | ||||||||
| 9026 | if (ConvertRHS) | ||||||||
| 9027 | Kind = PrepareScalarCast(RHS, LHSType); | ||||||||
| 9028 | return Compatible; | ||||||||
| 9029 | } | ||||||||
| 9030 | |||||||||
| 9031 | // Conversions to normal pointers. | ||||||||
| 9032 | if (const PointerType *LHSPointer = dyn_cast<PointerType>(LHSType)) { | ||||||||
| 9033 | // U* -> T* | ||||||||
| 9034 | if (isa<PointerType>(RHSType)) { | ||||||||
| 9035 | LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); | ||||||||
| 9036 | LangAS AddrSpaceR = RHSType->getPointeeType().getAddressSpace(); | ||||||||
| 9037 | if (AddrSpaceL != AddrSpaceR) | ||||||||
| 9038 | Kind = CK_AddressSpaceConversion; | ||||||||
| 9039 | else if (Context.hasCvrSimilarType(RHSType, LHSType)) | ||||||||
| 9040 | Kind = CK_NoOp; | ||||||||
| 9041 | else | ||||||||
| 9042 | Kind = CK_BitCast; | ||||||||
| 9043 | return checkPointerTypesForAssignment(*this, LHSType, RHSType); | ||||||||
| 9044 | } | ||||||||
| 9045 | |||||||||
| 9046 | // int -> T* | ||||||||
| 9047 | if (RHSType->isIntegerType()) { | ||||||||
| 9048 | Kind = CK_IntegralToPointer; // FIXME: null? | ||||||||
| 9049 | return IntToPointer; | ||||||||
| 9050 | } | ||||||||
| 9051 | |||||||||
| 9052 | // C pointers are not compatible with ObjC object pointers, | ||||||||
| 9053 | // with two exceptions: | ||||||||
| 9054 | if (isa<ObjCObjectPointerType>(RHSType)) { | ||||||||
| 9055 | // - conversions to void* | ||||||||
| 9056 | if (LHSPointer->getPointeeType()->isVoidType()) { | ||||||||
| 9057 | Kind = CK_BitCast; | ||||||||
| 9058 | return Compatible; | ||||||||
| 9059 | } | ||||||||
| 9060 | |||||||||
| 9061 | // - conversions from 'Class' to the redefinition type | ||||||||
| 9062 | if (RHSType->isObjCClassType() && | ||||||||
| 9063 | Context.hasSameType(LHSType, | ||||||||
| 9064 | Context.getObjCClassRedefinitionType())) { | ||||||||
| 9065 | Kind = CK_BitCast; | ||||||||
| 9066 | return Compatible; | ||||||||
| 9067 | } | ||||||||
| 9068 | |||||||||
| 9069 | Kind = CK_BitCast; | ||||||||
| 9070 | return IncompatiblePointer; | ||||||||
| 9071 | } | ||||||||
| 9072 | |||||||||
| 9073 | // U^ -> void* | ||||||||
| 9074 | if (RHSType->getAs<BlockPointerType>()) { | ||||||||
| 9075 | if (LHSPointer->getPointeeType()->isVoidType()) { | ||||||||
| 9076 | LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); | ||||||||
| 9077 | LangAS AddrSpaceR = RHSType->getAs<BlockPointerType>() | ||||||||
| |||||||||
| 9078 | ->getPointeeType() | ||||||||
| 9079 | .getAddressSpace(); | ||||||||
| 9080 | Kind = | ||||||||
| 9081 | AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; | ||||||||
| 9082 | return Compatible; | ||||||||
| 9083 | } | ||||||||
| 9084 | } | ||||||||
| 9085 | |||||||||
| 9086 | return Incompatible; | ||||||||
| 9087 | } | ||||||||
| 9088 | |||||||||
| 9089 | // Conversions to block pointers. | ||||||||
| 9090 | if (isa<BlockPointerType>(LHSType)) { | ||||||||
| 9091 | // U^ -> T^ | ||||||||
| 9092 | if (RHSType->isBlockPointerType()) { | ||||||||
| 9093 | LangAS AddrSpaceL = LHSType->getAs<BlockPointerType>() | ||||||||
| 9094 | ->getPointeeType() | ||||||||
| 9095 | .getAddressSpace(); | ||||||||
| 9096 | LangAS AddrSpaceR = RHSType->getAs<BlockPointerType>() | ||||||||
| 9097 | ->getPointeeType() | ||||||||
| 9098 | .getAddressSpace(); | ||||||||
| 9099 | Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; | ||||||||
| 9100 | return checkBlockPointerTypesForAssignment(*this, LHSType, RHSType); | ||||||||
| 9101 | } | ||||||||
| 9102 | |||||||||
| 9103 | // int or null -> T^ | ||||||||
| 9104 | if (RHSType->isIntegerType()) { | ||||||||
| 9105 | Kind = CK_IntegralToPointer; // FIXME: null | ||||||||
| 9106 | return IntToBlockPointer; | ||||||||
| 9107 | } | ||||||||
| 9108 | |||||||||
| 9109 | // id -> T^ | ||||||||
| 9110 | if (getLangOpts().ObjC && RHSType->isObjCIdType()) { | ||||||||
| 9111 | Kind = CK_AnyPointerToBlockPointerCast; | ||||||||
| 9112 | return Compatible; | ||||||||
| 9113 | } | ||||||||
| 9114 | |||||||||
| 9115 | // void* -> T^ | ||||||||
| 9116 | if (const PointerType *RHSPT = RHSType->getAs<PointerType>()) | ||||||||
| 9117 | if (RHSPT->getPointeeType()->isVoidType()) { | ||||||||
| 9118 | Kind = CK_AnyPointerToBlockPointerCast; | ||||||||
| 9119 | return Compatible; | ||||||||
| 9120 | } | ||||||||
| 9121 | |||||||||
| 9122 | return Incompatible; | ||||||||
| 9123 | } | ||||||||
| 9124 | |||||||||
| 9125 | // Conversions to Objective-C pointers. | ||||||||
| 9126 | if (isa<ObjCObjectPointerType>(LHSType)) { | ||||||||
| 9127 | // A* -> B* | ||||||||
| 9128 | if (RHSType->isObjCObjectPointerType()) { | ||||||||
| 9129 | Kind = CK_BitCast; | ||||||||
| 9130 | Sema::AssignConvertType result = | ||||||||
| 9131 | checkObjCPointerTypesForAssignment(*this, LHSType, RHSType); | ||||||||
| 9132 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||||||
| 9133 | result == Compatible && | ||||||||
| 9134 | !CheckObjCARCUnavailableWeakConversion(OrigLHSType, RHSType)) | ||||||||
| 9135 | result = IncompatibleObjCWeakRef; | ||||||||
| 9136 | return result; | ||||||||
| 9137 | } | ||||||||
| 9138 | |||||||||
| 9139 | // int or null -> A* | ||||||||
| 9140 | if (RHSType->isIntegerType()) { | ||||||||
| 9141 | Kind = CK_IntegralToPointer; // FIXME: null | ||||||||
| 9142 | return IntToPointer; | ||||||||
| 9143 | } | ||||||||
| 9144 | |||||||||
| 9145 | // In general, C pointers are not compatible with ObjC object pointers, | ||||||||
| 9146 | // with two exceptions: | ||||||||
| 9147 | if (isa<PointerType>(RHSType)) { | ||||||||
| 9148 | Kind = CK_CPointerToObjCPointerCast; | ||||||||
| 9149 | |||||||||
| 9150 | // - conversions from 'void*' | ||||||||
| 9151 | if (RHSType->isVoidPointerType()) { | ||||||||
| 9152 | return Compatible; | ||||||||
| 9153 | } | ||||||||
| 9154 | |||||||||
| 9155 | // - conversions to 'Class' from its redefinition type | ||||||||
| 9156 | if (LHSType->isObjCClassType() && | ||||||||
| 9157 | Context.hasSameType(RHSType, | ||||||||
| 9158 | Context.getObjCClassRedefinitionType())) { | ||||||||
| 9159 | return Compatible; | ||||||||
| 9160 | } | ||||||||
| 9161 | |||||||||
| 9162 | return IncompatiblePointer; | ||||||||
| 9163 | } | ||||||||
| 9164 | |||||||||
| 9165 | // Only under strict condition T^ is compatible with an Objective-C pointer. | ||||||||
| 9166 | if (RHSType->isBlockPointerType() && | ||||||||
| 9167 | LHSType->isBlockCompatibleObjCPointerType(Context)) { | ||||||||
| 9168 | if (ConvertRHS) | ||||||||
| 9169 | maybeExtendBlockObject(RHS); | ||||||||
| 9170 | Kind = CK_BlockPointerToObjCPointerCast; | ||||||||
| 9171 | return Compatible; | ||||||||
| 9172 | } | ||||||||
| 9173 | |||||||||
| 9174 | return Incompatible; | ||||||||
| 9175 | } | ||||||||
| 9176 | |||||||||
| 9177 | // Conversions from pointers that are not covered by the above. | ||||||||
| 9178 | if (isa<PointerType>(RHSType)) { | ||||||||
| 9179 | // T* -> _Bool | ||||||||
| 9180 | if (LHSType == Context.BoolTy) { | ||||||||
| 9181 | Kind = CK_PointerToBoolean; | ||||||||
| 9182 | return Compatible; | ||||||||
| 9183 | } | ||||||||
| 9184 | |||||||||
| 9185 | // T* -> int | ||||||||
| 9186 | if (LHSType->isIntegerType()) { | ||||||||
| 9187 | Kind = CK_PointerToIntegral; | ||||||||
| 9188 | return PointerToInt; | ||||||||
| 9189 | } | ||||||||
| 9190 | |||||||||
| 9191 | return Incompatible; | ||||||||
| 9192 | } | ||||||||
| 9193 | |||||||||
| 9194 | // Conversions from Objective-C pointers that are not covered by the above. | ||||||||
| 9195 | if (isa<ObjCObjectPointerType>(RHSType)) { | ||||||||
| 9196 | // T* -> _Bool | ||||||||
| 9197 | if (LHSType == Context.BoolTy) { | ||||||||
| 9198 | Kind = CK_PointerToBoolean; | ||||||||
| 9199 | return Compatible; | ||||||||
| 9200 | } | ||||||||
| 9201 | |||||||||
| 9202 | // T* -> int | ||||||||
| 9203 | if (LHSType->isIntegerType()) { | ||||||||
| 9204 | Kind = CK_PointerToIntegral; | ||||||||
| 9205 | return PointerToInt; | ||||||||
| 9206 | } | ||||||||
| 9207 | |||||||||
| 9208 | return Incompatible; | ||||||||
| 9209 | } | ||||||||
| 9210 | |||||||||
| 9211 | // struct A -> struct B | ||||||||
| 9212 | if (isa<TagType>(LHSType) && isa<TagType>(RHSType)) { | ||||||||
| 9213 | if (Context.typesAreCompatible(LHSType, RHSType)) { | ||||||||
| 9214 | Kind = CK_NoOp; | ||||||||
| 9215 | return Compatible; | ||||||||
| 9216 | } | ||||||||
| 9217 | } | ||||||||
| 9218 | |||||||||
| 9219 | if (LHSType->isSamplerT() && RHSType->isIntegerType()) { | ||||||||
| 9220 | Kind = CK_IntToOCLSampler; | ||||||||
| 9221 | return Compatible; | ||||||||
| 9222 | } | ||||||||
| 9223 | |||||||||
| 9224 | return Incompatible; | ||||||||
| 9225 | } | ||||||||
| 9226 | |||||||||
| 9227 | /// Constructs a transparent union from an expression that is | ||||||||
| 9228 | /// used to initialize the transparent union. | ||||||||
| 9229 | static void ConstructTransparentUnion(Sema &S, ASTContext &C, | ||||||||
| 9230 | ExprResult &EResult, QualType UnionType, | ||||||||
| 9231 | FieldDecl *Field) { | ||||||||
| 9232 | // Build an initializer list that designates the appropriate member | ||||||||
| 9233 | // of the transparent union. | ||||||||
| 9234 | Expr *E = EResult.get(); | ||||||||
| 9235 | InitListExpr *Initializer = new (C) InitListExpr(C, SourceLocation(), | ||||||||
| 9236 | E, SourceLocation()); | ||||||||
| 9237 | Initializer->setType(UnionType); | ||||||||
| 9238 | Initializer->setInitializedFieldInUnion(Field); | ||||||||
| 9239 | |||||||||
| 9240 | // Build a compound literal constructing a value of the transparent | ||||||||
| 9241 | // union type from this initializer list. | ||||||||
| 9242 | TypeSourceInfo *unionTInfo = C.getTrivialTypeSourceInfo(UnionType); | ||||||||
| 9243 | EResult = new (C) CompoundLiteralExpr(SourceLocation(), unionTInfo, UnionType, | ||||||||
| 9244 | VK_RValue, Initializer, false); | ||||||||
| 9245 | } | ||||||||
| 9246 | |||||||||
| 9247 | Sema::AssignConvertType | ||||||||
| 9248 | Sema::CheckTransparentUnionArgumentConstraints(QualType ArgType, | ||||||||
| 9249 | ExprResult &RHS) { | ||||||||
| 9250 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 9251 | |||||||||
| 9252 | // If the ArgType is a Union type, we want to handle a potential | ||||||||
| 9253 | // transparent_union GCC extension. | ||||||||
| 9254 | const RecordType *UT = ArgType->getAsUnionType(); | ||||||||
| 9255 | if (!UT || !UT->getDecl()->hasAttr<TransparentUnionAttr>()) | ||||||||
| 9256 | return Incompatible; | ||||||||
| 9257 | |||||||||
| 9258 | // The field to initialize within the transparent union. | ||||||||
| 9259 | RecordDecl *UD = UT->getDecl(); | ||||||||
| 9260 | FieldDecl *InitField = nullptr; | ||||||||
| 9261 | // It's compatible if the expression matches any of the fields. | ||||||||
| 9262 | for (auto *it : UD->fields()) { | ||||||||
| 9263 | if (it->getType()->isPointerType()) { | ||||||||
| 9264 | // If the transparent union contains a pointer type, we allow: | ||||||||
| 9265 | // 1) void pointer | ||||||||
| 9266 | // 2) null pointer constant | ||||||||
| 9267 | if (RHSType->isPointerType()) | ||||||||
| 9268 | if (RHSType->castAs<PointerType>()->getPointeeType()->isVoidType()) { | ||||||||
| 9269 | RHS = ImpCastExprToType(RHS.get(), it->getType(), CK_BitCast); | ||||||||
| 9270 | InitField = it; | ||||||||
| 9271 | break; | ||||||||
| 9272 | } | ||||||||
| 9273 | |||||||||
| 9274 | if (RHS.get()->isNullPointerConstant(Context, | ||||||||
| 9275 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
| 9276 | RHS = ImpCastExprToType(RHS.get(), it->getType(), | ||||||||
| 9277 | CK_NullToPointer); | ||||||||
| 9278 | InitField = it; | ||||||||
| 9279 | break; | ||||||||
| 9280 | } | ||||||||
| 9281 | } | ||||||||
| 9282 | |||||||||
| 9283 | CastKind Kind; | ||||||||
| 9284 | if (CheckAssignmentConstraints(it->getType(), RHS, Kind) | ||||||||
| 9285 | == Compatible) { | ||||||||
| 9286 | RHS = ImpCastExprToType(RHS.get(), it->getType(), Kind); | ||||||||
| 9287 | InitField = it; | ||||||||
| 9288 | break; | ||||||||
| 9289 | } | ||||||||
| 9290 | } | ||||||||
| 9291 | |||||||||
| 9292 | if (!InitField) | ||||||||
| 9293 | return Incompatible; | ||||||||
| 9294 | |||||||||
| 9295 | ConstructTransparentUnion(*this, Context, RHS, ArgType, InitField); | ||||||||
| 9296 | return Compatible; | ||||||||
| 9297 | } | ||||||||
| 9298 | |||||||||
| 9299 | Sema::AssignConvertType | ||||||||
| 9300 | Sema::CheckSingleAssignmentConstraints(QualType LHSType, ExprResult &CallerRHS, | ||||||||
| 9301 | bool Diagnose, | ||||||||
| 9302 | bool DiagnoseCFAudited, | ||||||||
| 9303 | bool ConvertRHS) { | ||||||||
| 9304 | // We need to be able to tell the caller whether we diagnosed a problem, if | ||||||||
| 9305 | // they ask us to issue diagnostics. | ||||||||
| 9306 | assert((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed")(((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed" ) ? static_cast<void> (0) : __assert_fail ("(ConvertRHS || !Diagnose) && \"can't indicate whether we diagnosed\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 9306, __PRETTY_FUNCTION__)); | ||||||||
| 9307 | |||||||||
| 9308 | // If ConvertRHS is false, we want to leave the caller's RHS untouched. Sadly, | ||||||||
| 9309 | // we can't avoid *all* modifications at the moment, so we need some somewhere | ||||||||
| 9310 | // to put the updated value. | ||||||||
| 9311 | ExprResult LocalRHS = CallerRHS; | ||||||||
| 9312 | ExprResult &RHS = ConvertRHS ? CallerRHS : LocalRHS; | ||||||||
| 9313 | |||||||||
| 9314 | if (const auto *LHSPtrType = LHSType->getAs<PointerType>()) { | ||||||||
| 9315 | if (const auto *RHSPtrType = RHS.get()->getType()->getAs<PointerType>()) { | ||||||||
| 9316 | if (RHSPtrType->getPointeeType()->hasAttr(attr::NoDeref) && | ||||||||
| 9317 | !LHSPtrType->getPointeeType()->hasAttr(attr::NoDeref)) { | ||||||||
| 9318 | Diag(RHS.get()->getExprLoc(), | ||||||||
| 9319 | diag::warn_noderef_to_dereferenceable_pointer) | ||||||||
| 9320 | << RHS.get()->getSourceRange(); | ||||||||
| 9321 | } | ||||||||
| 9322 | } | ||||||||
| 9323 | } | ||||||||
| 9324 | |||||||||
| 9325 | if (getLangOpts().CPlusPlus) { | ||||||||
| 9326 | if (!LHSType->isRecordType() && !LHSType->isAtomicType()) { | ||||||||
| 9327 | // C++ 5.17p3: If the left operand is not of class type, the | ||||||||
| 9328 | // expression is implicitly converted (C++ 4) to the | ||||||||
| 9329 | // cv-unqualified type of the left operand. | ||||||||
| 9330 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 9331 | if (Diagnose) { | ||||||||
| 9332 | RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||||||
| 9333 | AA_Assigning); | ||||||||
| 9334 | } else { | ||||||||
| 9335 | ImplicitConversionSequence ICS = | ||||||||
| 9336 | TryImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||||||
| 9337 | /*SuppressUserConversions=*/false, | ||||||||
| 9338 | AllowedExplicit::None, | ||||||||
| 9339 | /*InOverloadResolution=*/false, | ||||||||
| 9340 | /*CStyle=*/false, | ||||||||
| 9341 | /*AllowObjCWritebackConversion=*/false); | ||||||||
| 9342 | if (ICS.isFailure()) | ||||||||
| 9343 | return Incompatible; | ||||||||
| 9344 | RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||||||
| 9345 | ICS, AA_Assigning); | ||||||||
| 9346 | } | ||||||||
| 9347 | if (RHS.isInvalid()) | ||||||||
| 9348 | return Incompatible; | ||||||||
| 9349 | Sema::AssignConvertType result = Compatible; | ||||||||
| 9350 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||||||
| 9351 | !CheckObjCARCUnavailableWeakConversion(LHSType, RHSType)) | ||||||||
| 9352 | result = IncompatibleObjCWeakRef; | ||||||||
| 9353 | return result; | ||||||||
| 9354 | } | ||||||||
| 9355 | |||||||||
| 9356 | // FIXME: Currently, we fall through and treat C++ classes like C | ||||||||
| 9357 | // structures. | ||||||||
| 9358 | // FIXME: We also fall through for atomics; not sure what should | ||||||||
| 9359 | // happen there, though. | ||||||||
| 9360 | } else if (RHS.get()->getType() == Context.OverloadTy) { | ||||||||
| 9361 | // As a set of extensions to C, we support overloading on functions. These | ||||||||
| 9362 | // functions need to be resolved here. | ||||||||
| 9363 | DeclAccessPair DAP; | ||||||||
| 9364 | if (FunctionDecl *FD = ResolveAddressOfOverloadedFunction( | ||||||||
| 9365 | RHS.get(), LHSType, /*Complain=*/false, DAP)) | ||||||||
| 9366 | RHS = FixOverloadedFunctionReference(RHS.get(), DAP, FD); | ||||||||
| 9367 | else | ||||||||
| 9368 | return Incompatible; | ||||||||
| 9369 | } | ||||||||
| 9370 | |||||||||
| 9371 | // C99 6.5.16.1p1: the left operand is a pointer and the right is | ||||||||
| 9372 | // a null pointer constant. | ||||||||
| 9373 | if ((LHSType->isPointerType() || LHSType->isObjCObjectPointerType() || | ||||||||
| 9374 | LHSType->isBlockPointerType()) && | ||||||||
| 9375 | RHS.get()->isNullPointerConstant(Context, | ||||||||
| 9376 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
| 9377 | if (Diagnose || ConvertRHS) { | ||||||||
| 9378 | CastKind Kind; | ||||||||
| 9379 | CXXCastPath Path; | ||||||||
| 9380 | CheckPointerConversion(RHS.get(), LHSType, Kind, Path, | ||||||||
| 9381 | /*IgnoreBaseAccess=*/false, Diagnose); | ||||||||
| 9382 | if (ConvertRHS) | ||||||||
| 9383 | RHS = ImpCastExprToType(RHS.get(), LHSType, Kind, VK_RValue, &Path); | ||||||||
| 9384 | } | ||||||||
| 9385 | return Compatible; | ||||||||
| 9386 | } | ||||||||
| 9387 | |||||||||
| 9388 | // OpenCL queue_t type assignment. | ||||||||
| 9389 | if (LHSType->isQueueT() && RHS.get()->isNullPointerConstant( | ||||||||
| 9390 | Context, Expr::NPC_ValueDependentIsNull)) { | ||||||||
| 9391 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
| 9392 | return Compatible; | ||||||||
| 9393 | } | ||||||||
| 9394 | |||||||||
| 9395 | // This check seems unnatural, however it is necessary to ensure the proper | ||||||||
| 9396 | // conversion of functions/arrays. If the conversion were done for all | ||||||||
| 9397 | // DeclExpr's (created by ActOnIdExpression), it would mess up the unary | ||||||||
| 9398 | // expressions that suppress this implicit conversion (&, sizeof). | ||||||||
| 9399 | // | ||||||||
| 9400 | // Suppress this for references: C++ 8.5.3p5. | ||||||||
| 9401 | if (!LHSType->isReferenceType()) { | ||||||||
| 9402 | // FIXME: We potentially allocate here even if ConvertRHS is false. | ||||||||
| 9403 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get(), Diagnose); | ||||||||
| 9404 | if (RHS.isInvalid()) | ||||||||
| 9405 | return Incompatible; | ||||||||
| 9406 | } | ||||||||
| 9407 | CastKind Kind; | ||||||||
| 9408 | Sema::AssignConvertType result = | ||||||||
| 9409 | CheckAssignmentConstraints(LHSType, RHS, Kind, ConvertRHS); | ||||||||
| 9410 | |||||||||
| 9411 | // C99 6.5.16.1p2: The value of the right operand is converted to the | ||||||||
| 9412 | // type of the assignment expression. | ||||||||
| 9413 | // CheckAssignmentConstraints allows the left-hand side to be a reference, | ||||||||
| 9414 | // so that we can use references in built-in functions even in C. | ||||||||
| 9415 | // The getNonReferenceType() call makes sure that the resulting expression | ||||||||
| 9416 | // does not have reference type. | ||||||||
| 9417 | if (result != Incompatible && RHS.get()->getType() != LHSType) { | ||||||||
| 9418 | QualType Ty = LHSType.getNonLValueExprType(Context); | ||||||||
| 9419 | Expr *E = RHS.get(); | ||||||||
| 9420 | |||||||||
| 9421 | // Check for various Objective-C errors. If we are not reporting | ||||||||
| 9422 | // diagnostics and just checking for errors, e.g., during overload | ||||||||
| 9423 | // resolution, return Incompatible to indicate the failure. | ||||||||
| 9424 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||||||
| 9425 | CheckObjCConversion(SourceRange(), Ty, E, CCK_ImplicitConversion, | ||||||||
| 9426 | Diagnose, DiagnoseCFAudited) != ACR_okay) { | ||||||||
| 9427 | if (!Diagnose) | ||||||||
| 9428 | return Incompatible; | ||||||||
| 9429 | } | ||||||||
| 9430 | if (getLangOpts().ObjC && | ||||||||
| 9431 | (CheckObjCBridgeRelatedConversions(E->getBeginLoc(), LHSType, | ||||||||
| 9432 | E->getType(), E, Diagnose) || | ||||||||
| 9433 | CheckConversionToObjCLiteral(LHSType, E, Diagnose))) { | ||||||||
| 9434 | if (!Diagnose) | ||||||||
| 9435 | return Incompatible; | ||||||||
| 9436 | // Replace the expression with a corrected version and continue so we | ||||||||
| 9437 | // can find further errors. | ||||||||
| 9438 | RHS = E; | ||||||||
| 9439 | return Compatible; | ||||||||
| 9440 | } | ||||||||
| 9441 | |||||||||
| 9442 | if (ConvertRHS) | ||||||||
| 9443 | RHS = ImpCastExprToType(E, Ty, Kind); | ||||||||
| 9444 | } | ||||||||
| 9445 | |||||||||
| 9446 | return result; | ||||||||
| 9447 | } | ||||||||
| 9448 | |||||||||
| 9449 | namespace { | ||||||||
| 9450 | /// The original operand to an operator, prior to the application of the usual | ||||||||
| 9451 | /// arithmetic conversions and converting the arguments of a builtin operator | ||||||||
| 9452 | /// candidate. | ||||||||
| 9453 | struct OriginalOperand { | ||||||||
| 9454 | explicit OriginalOperand(Expr *Op) : Orig(Op), Conversion(nullptr) { | ||||||||
| 9455 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(Op)) | ||||||||
| 9456 | Op = MTE->getSubExpr(); | ||||||||
| 9457 | if (auto *BTE = dyn_cast<CXXBindTemporaryExpr>(Op)) | ||||||||
| 9458 | Op = BTE->getSubExpr(); | ||||||||
| 9459 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(Op)) { | ||||||||
| 9460 | Orig = ICE->getSubExprAsWritten(); | ||||||||
| 9461 | Conversion = ICE->getConversionFunction(); | ||||||||
| 9462 | } | ||||||||
| 9463 | } | ||||||||
| 9464 | |||||||||
| 9465 | QualType getType() const { return Orig->getType(); } | ||||||||
| 9466 | |||||||||
| 9467 | Expr *Orig; | ||||||||
| 9468 | NamedDecl *Conversion; | ||||||||
| 9469 | }; | ||||||||
| 9470 | } | ||||||||
| 9471 | |||||||||
| 9472 | QualType Sema::InvalidOperands(SourceLocation Loc, ExprResult &LHS, | ||||||||
| 9473 | ExprResult &RHS) { | ||||||||
| 9474 | OriginalOperand OrigLHS(LHS.get()), OrigRHS(RHS.get()); | ||||||||
| 9475 | |||||||||
| 9476 | Diag(Loc, diag::err_typecheck_invalid_operands) | ||||||||
| 9477 | << OrigLHS.getType() << OrigRHS.getType() | ||||||||
| 9478 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 9479 | |||||||||
| 9480 | // If a user-defined conversion was applied to either of the operands prior | ||||||||
| 9481 | // to applying the built-in operator rules, tell the user about it. | ||||||||
| 9482 | if (OrigLHS.Conversion) { | ||||||||
| 9483 | Diag(OrigLHS.Conversion->getLocation(), | ||||||||
| 9484 | diag::note_typecheck_invalid_operands_converted) | ||||||||
| 9485 | << 0 << LHS.get()->getType(); | ||||||||
| 9486 | } | ||||||||
| 9487 | if (OrigRHS.Conversion) { | ||||||||
| 9488 | Diag(OrigRHS.Conversion->getLocation(), | ||||||||
| 9489 | diag::note_typecheck_invalid_operands_converted) | ||||||||
| 9490 | << 1 << RHS.get()->getType(); | ||||||||
| 9491 | } | ||||||||
| 9492 | |||||||||
| 9493 | return QualType(); | ||||||||
| 9494 | } | ||||||||
| 9495 | |||||||||
| 9496 | // Diagnose cases where a scalar was implicitly converted to a vector and | ||||||||
| 9497 | // diagnose the underlying types. Otherwise, diagnose the error | ||||||||
| 9498 | // as invalid vector logical operands for non-C++ cases. | ||||||||
| 9499 | QualType Sema::InvalidLogicalVectorOperands(SourceLocation Loc, ExprResult &LHS, | ||||||||
| 9500 | ExprResult &RHS) { | ||||||||
| 9501 | QualType LHSType = LHS.get()->IgnoreImpCasts()->getType(); | ||||||||
| 9502 | QualType RHSType = RHS.get()->IgnoreImpCasts()->getType(); | ||||||||
| 9503 | |||||||||
| 9504 | bool LHSNatVec = LHSType->isVectorType(); | ||||||||
| 9505 | bool RHSNatVec = RHSType->isVectorType(); | ||||||||
| 9506 | |||||||||
| 9507 | if (!(LHSNatVec && RHSNatVec)) { | ||||||||
| 9508 | Expr *Vector = LHSNatVec ? LHS.get() : RHS.get(); | ||||||||
| 9509 | Expr *NonVector = !LHSNatVec ? LHS.get() : RHS.get(); | ||||||||
| 9510 | Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) | ||||||||
| 9511 | << 0 << Vector->getType() << NonVector->IgnoreImpCasts()->getType() | ||||||||
| 9512 | << Vector->getSourceRange(); | ||||||||
| 9513 | return QualType(); | ||||||||
| 9514 | } | ||||||||
| 9515 | |||||||||
| 9516 | Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) | ||||||||
| 9517 | << 1 << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
| 9518 | << RHS.get()->getSourceRange(); | ||||||||
| 9519 | |||||||||
| 9520 | return QualType(); | ||||||||
| 9521 | } | ||||||||
| 9522 | |||||||||
| 9523 | /// Try to convert a value of non-vector type to a vector type by converting | ||||||||
| 9524 | /// the type to the element type of the vector and then performing a splat. | ||||||||
| 9525 | /// If the language is OpenCL, we only use conversions that promote scalar | ||||||||
| 9526 | /// rank; for C, Obj-C, and C++ we allow any real scalar conversion except | ||||||||
| 9527 | /// for float->int. | ||||||||
| 9528 | /// | ||||||||
| 9529 | /// OpenCL V2.0 6.2.6.p2: | ||||||||
| 9530 | /// An error shall occur if any scalar operand type has greater rank | ||||||||
| 9531 | /// than the type of the vector element. | ||||||||
| 9532 | /// | ||||||||
| 9533 | /// \param scalar - if non-null, actually perform the conversions | ||||||||
| 9534 | /// \return true if the operation fails (but without diagnosing the failure) | ||||||||
| 9535 | static bool tryVectorConvertAndSplat(Sema &S, ExprResult *scalar, | ||||||||
| 9536 | QualType scalarTy, | ||||||||
| 9537 | QualType vectorEltTy, | ||||||||
| 9538 | QualType vectorTy, | ||||||||
| 9539 | unsigned &DiagID) { | ||||||||
| 9540 | // The conversion to apply to the scalar before splatting it, | ||||||||
| 9541 | // if necessary. | ||||||||
| 9542 | CastKind scalarCast = CK_NoOp; | ||||||||
| 9543 | |||||||||
| 9544 | if (vectorEltTy->isIntegralType(S.Context)) { | ||||||||
| 9545 | if (S.getLangOpts().OpenCL && (scalarTy->isRealFloatingType() || | ||||||||
| 9546 | (scalarTy->isIntegerType() && | ||||||||
| 9547 | S.Context.getIntegerTypeOrder(vectorEltTy, scalarTy) < 0))) { | ||||||||
| 9548 | DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; | ||||||||
| 9549 | return true; | ||||||||
| 9550 | } | ||||||||
| 9551 | if (!scalarTy->isIntegralType(S.Context)) | ||||||||
| 9552 | return true; | ||||||||
| 9553 | scalarCast = CK_IntegralCast; | ||||||||
| 9554 | } else if (vectorEltTy->isRealFloatingType()) { | ||||||||
| 9555 | if (scalarTy->isRealFloatingType()) { | ||||||||
| 9556 | if (S.getLangOpts().OpenCL && | ||||||||
| 9557 | S.Context.getFloatingTypeOrder(vectorEltTy, scalarTy) < 0) { | ||||||||
| 9558 | DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; | ||||||||
| 9559 | return true; | ||||||||
| 9560 | } | ||||||||
| 9561 | scalarCast = CK_FloatingCast; | ||||||||
| 9562 | } | ||||||||
| 9563 | else if (scalarTy->isIntegralType(S.Context)) | ||||||||
| 9564 | scalarCast = CK_IntegralToFloating; | ||||||||
| 9565 | else | ||||||||
| 9566 | return true; | ||||||||
| 9567 | } else { | ||||||||
| 9568 | return true; | ||||||||
| 9569 | } | ||||||||
| 9570 | |||||||||
| 9571 | // Adjust scalar if desired. | ||||||||
| 9572 | if (scalar) { | ||||||||
| 9573 | if (scalarCast != CK_NoOp) | ||||||||
| 9574 | *scalar = S.ImpCastExprToType(scalar->get(), vectorEltTy, scalarCast); | ||||||||
| 9575 | *scalar = S.ImpCastExprToType(scalar->get(), vectorTy, CK_VectorSplat); | ||||||||
| 9576 | } | ||||||||
| 9577 | return false; | ||||||||
| 9578 | } | ||||||||
| 9579 | |||||||||
| 9580 | /// Convert vector E to a vector with the same number of elements but different | ||||||||
| 9581 | /// element type. | ||||||||
| 9582 | static ExprResult convertVector(Expr *E, QualType ElementType, Sema &S) { | ||||||||
| 9583 | const auto *VecTy = E->getType()->getAs<VectorType>(); | ||||||||
| 9584 | assert(VecTy && "Expression E must be a vector")((VecTy && "Expression E must be a vector") ? static_cast <void> (0) : __assert_fail ("VecTy && \"Expression E must be a vector\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 9584, __PRETTY_FUNCTION__)); | ||||||||
| 9585 | QualType NewVecTy = S.Context.getVectorType(ElementType, | ||||||||
| 9586 | VecTy->getNumElements(), | ||||||||
| 9587 | VecTy->getVectorKind()); | ||||||||
| 9588 | |||||||||
| 9589 | // Look through the implicit cast. Return the subexpression if its type is | ||||||||
| 9590 | // NewVecTy. | ||||||||
| 9591 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
| 9592 | if (ICE->getSubExpr()->getType() == NewVecTy) | ||||||||
| 9593 | return ICE->getSubExpr(); | ||||||||
| 9594 | |||||||||
| 9595 | auto Cast = ElementType->isIntegerType() ? CK_IntegralCast : CK_FloatingCast; | ||||||||
| 9596 | return S.ImpCastExprToType(E, NewVecTy, Cast); | ||||||||
| 9597 | } | ||||||||
| 9598 | |||||||||
| 9599 | /// Test if a (constant) integer Int can be casted to another integer type | ||||||||
| 9600 | /// IntTy without losing precision. | ||||||||
| 9601 | static bool canConvertIntToOtherIntTy(Sema &S, ExprResult *Int, | ||||||||
| 9602 | QualType OtherIntTy) { | ||||||||
| 9603 | QualType IntTy = Int->get()->getType().getUnqualifiedType(); | ||||||||
| 9604 | |||||||||
| 9605 | // Reject cases where the value of the Int is unknown as that would | ||||||||
| 9606 | // possibly cause truncation, but accept cases where the scalar can be | ||||||||
| 9607 | // demoted without loss of precision. | ||||||||
| 9608 | Expr::EvalResult EVResult; | ||||||||
| 9609 | bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); | ||||||||
| 9610 | int Order = S.Context.getIntegerTypeOrder(OtherIntTy, IntTy); | ||||||||
| 9611 | bool IntSigned = IntTy->hasSignedIntegerRepresentation(); | ||||||||
| 9612 | bool OtherIntSigned = OtherIntTy->hasSignedIntegerRepresentation(); | ||||||||
| 9613 | |||||||||
| 9614 | if (CstInt) { | ||||||||
| 9615 | // If the scalar is constant and is of a higher order and has more active | ||||||||
| 9616 | // bits that the vector element type, reject it. | ||||||||
| 9617 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||||||
| 9618 | unsigned NumBits = IntSigned | ||||||||
| 9619 | ? (Result.isNegative() ? Result.getMinSignedBits() | ||||||||
| 9620 | : Result.getActiveBits()) | ||||||||
| 9621 | : Result.getActiveBits(); | ||||||||
| 9622 | if (Order < 0 && S.Context.getIntWidth(OtherIntTy) < NumBits) | ||||||||
| 9623 | return true; | ||||||||
| 9624 | |||||||||
| 9625 | // If the signedness of the scalar type and the vector element type | ||||||||
| 9626 | // differs and the number of bits is greater than that of the vector | ||||||||
| 9627 | // element reject it. | ||||||||
| 9628 | return (IntSigned != OtherIntSigned && | ||||||||
| 9629 | NumBits > S.Context.getIntWidth(OtherIntTy)); | ||||||||
| 9630 | } | ||||||||
| 9631 | |||||||||
| 9632 | // Reject cases where the value of the scalar is not constant and it's | ||||||||
| 9633 | // order is greater than that of the vector element type. | ||||||||
| 9634 | return (Order < 0); | ||||||||
| 9635 | } | ||||||||
| 9636 | |||||||||
| 9637 | /// Test if a (constant) integer Int can be casted to floating point type | ||||||||
| 9638 | /// FloatTy without losing precision. | ||||||||
| 9639 | static bool canConvertIntTyToFloatTy(Sema &S, ExprResult *Int, | ||||||||
| 9640 | QualType FloatTy) { | ||||||||
| 9641 | QualType IntTy = Int->get()->getType().getUnqualifiedType(); | ||||||||
| 9642 | |||||||||
| 9643 | // Determine if the integer constant can be expressed as a floating point | ||||||||
| 9644 | // number of the appropriate type. | ||||||||
| 9645 | Expr::EvalResult EVResult; | ||||||||
| 9646 | bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); | ||||||||
| 9647 | |||||||||
| 9648 | uint64_t Bits = 0; | ||||||||
| 9649 | if (CstInt) { | ||||||||
| 9650 | // Reject constants that would be truncated if they were converted to | ||||||||
| 9651 | // the floating point type. Test by simple to/from conversion. | ||||||||
| 9652 | // FIXME: Ideally the conversion to an APFloat and from an APFloat | ||||||||
| 9653 | // could be avoided if there was a convertFromAPInt method | ||||||||
| 9654 | // which could signal back if implicit truncation occurred. | ||||||||
| 9655 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||||||
| 9656 | llvm::APFloat Float(S.Context.getFloatTypeSemantics(FloatTy)); | ||||||||
| 9657 | Float.convertFromAPInt(Result, IntTy->hasSignedIntegerRepresentation(), | ||||||||
| 9658 | llvm::APFloat::rmTowardZero); | ||||||||
| 9659 | llvm::APSInt ConvertBack(S.Context.getIntWidth(IntTy), | ||||||||
| 9660 | !IntTy->hasSignedIntegerRepresentation()); | ||||||||
| 9661 | bool Ignored = false; | ||||||||
| 9662 | Float.convertToInteger(ConvertBack, llvm::APFloat::rmNearestTiesToEven, | ||||||||
| 9663 | &Ignored); | ||||||||
| 9664 | if (Result != ConvertBack) | ||||||||
| 9665 | return true; | ||||||||
| 9666 | } else { | ||||||||
| 9667 | // Reject types that cannot be fully encoded into the mantissa of | ||||||||
| 9668 | // the float. | ||||||||
| 9669 | Bits = S.Context.getTypeSize(IntTy); | ||||||||
| 9670 | unsigned FloatPrec = llvm::APFloat::semanticsPrecision( | ||||||||
| 9671 | S.Context.getFloatTypeSemantics(FloatTy)); | ||||||||
| 9672 | if (Bits > FloatPrec) | ||||||||
| 9673 | return true; | ||||||||
| 9674 | } | ||||||||
| 9675 | |||||||||
| 9676 | return false; | ||||||||
| 9677 | } | ||||||||
| 9678 | |||||||||
| 9679 | /// Attempt to convert and splat Scalar into a vector whose types matches | ||||||||
| 9680 | /// Vector following GCC conversion rules. The rule is that implicit | ||||||||
| 9681 | /// conversion can occur when Scalar can be casted to match Vector's element | ||||||||
| 9682 | /// type without causing truncation of Scalar. | ||||||||
| 9683 | static bool tryGCCVectorConvertAndSplat(Sema &S, ExprResult *Scalar, | ||||||||
| 9684 | ExprResult *Vector) { | ||||||||
| 9685 | QualType ScalarTy = Scalar->get()->getType().getUnqualifiedType(); | ||||||||
| 9686 | QualType VectorTy = Vector->get()->getType().getUnqualifiedType(); | ||||||||
| 9687 | const VectorType *VT = VectorTy->getAs<VectorType>(); | ||||||||
| 9688 | |||||||||
| 9689 | assert(!isa<ExtVectorType>(VT) &&((!isa<ExtVectorType>(VT) && "ExtVectorTypes should not be handled here!" ) ? static_cast<void> (0) : __assert_fail ("!isa<ExtVectorType>(VT) && \"ExtVectorTypes should not be handled here!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 9690, __PRETTY_FUNCTION__)) | ||||||||
| 9690 | "ExtVectorTypes should not be handled here!")((!isa<ExtVectorType>(VT) && "ExtVectorTypes should not be handled here!" ) ? static_cast<void> (0) : __assert_fail ("!isa<ExtVectorType>(VT) && \"ExtVectorTypes should not be handled here!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 9690, __PRETTY_FUNCTION__)); | ||||||||
| 9691 | |||||||||
| 9692 | QualType VectorEltTy = VT->getElementType(); | ||||||||
| 9693 | |||||||||
| 9694 | // Reject cases where the vector element type or the scalar element type are | ||||||||
| 9695 | // not integral or floating point types. | ||||||||
| 9696 | if (!VectorEltTy->isArithmeticType() || !ScalarTy->isArithmeticType()) | ||||||||
| 9697 | return true; | ||||||||
| 9698 | |||||||||
| 9699 | // The conversion to apply to the scalar before splatting it, | ||||||||
| 9700 | // if necessary. | ||||||||
| 9701 | CastKind ScalarCast = CK_NoOp; | ||||||||
| 9702 | |||||||||
| 9703 | // Accept cases where the vector elements are integers and the scalar is | ||||||||
| 9704 | // an integer. | ||||||||
| 9705 | // FIXME: Notionally if the scalar was a floating point value with a precise | ||||||||
| 9706 | // integral representation, we could cast it to an appropriate integer | ||||||||
| 9707 | // type and then perform the rest of the checks here. GCC will perform | ||||||||
| 9708 | // this conversion in some cases as determined by the input language. | ||||||||
| 9709 | // We should accept it on a language independent basis. | ||||||||
| 9710 | if (VectorEltTy->isIntegralType(S.Context) && | ||||||||
| 9711 | ScalarTy->isIntegralType(S.Context) && | ||||||||
| 9712 | S.Context.getIntegerTypeOrder(VectorEltTy, ScalarTy)) { | ||||||||
| 9713 | |||||||||
| 9714 | if (canConvertIntToOtherIntTy(S, Scalar, VectorEltTy)) | ||||||||
| 9715 | return true; | ||||||||
| 9716 | |||||||||
| 9717 | ScalarCast = CK_IntegralCast; | ||||||||
| 9718 | } else if (VectorEltTy->isIntegralType(S.Context) && | ||||||||
| 9719 | ScalarTy->isRealFloatingType()) { | ||||||||
| 9720 | if (S.Context.getTypeSize(VectorEltTy) == S.Context.getTypeSize(ScalarTy)) | ||||||||
| 9721 | ScalarCast = CK_FloatingToIntegral; | ||||||||
| 9722 | else | ||||||||
| 9723 | return true; | ||||||||
| 9724 | } else if (VectorEltTy->isRealFloatingType()) { | ||||||||
| 9725 | if (ScalarTy->isRealFloatingType()) { | ||||||||
| 9726 | |||||||||
| 9727 | // Reject cases where the scalar type is not a constant and has a higher | ||||||||
| 9728 | // Order than the vector element type. | ||||||||
| 9729 | llvm::APFloat Result(0.0); | ||||||||
| 9730 | |||||||||
| 9731 | // Determine whether this is a constant scalar. In the event that the | ||||||||
| 9732 | // value is dependent (and thus cannot be evaluated by the constant | ||||||||
| 9733 | // evaluator), skip the evaluation. This will then diagnose once the | ||||||||
| 9734 | // expression is instantiated. | ||||||||
| 9735 | bool CstScalar = Scalar->get()->isValueDependent() || | ||||||||
| 9736 | Scalar->get()->EvaluateAsFloat(Result, S.Context); | ||||||||
| 9737 | int Order = S.Context.getFloatingTypeOrder(VectorEltTy, ScalarTy); | ||||||||
| 9738 | if (!CstScalar && Order < 0) | ||||||||
| 9739 | return true; | ||||||||
| 9740 | |||||||||
| 9741 | // If the scalar cannot be safely casted to the vector element type, | ||||||||
| 9742 | // reject it. | ||||||||
| 9743 | if (CstScalar) { | ||||||||
| 9744 | bool Truncated = false; | ||||||||
| 9745 | Result.convert(S.Context.getFloatTypeSemantics(VectorEltTy), | ||||||||
| 9746 | llvm::APFloat::rmNearestTiesToEven, &Truncated); | ||||||||
| 9747 | if (Truncated) | ||||||||
| 9748 | return true; | ||||||||
| 9749 | } | ||||||||
| 9750 | |||||||||
| 9751 | ScalarCast = CK_FloatingCast; | ||||||||
| 9752 | } else if (ScalarTy->isIntegralType(S.Context)) { | ||||||||
| 9753 | if (canConvertIntTyToFloatTy(S, Scalar, VectorEltTy)) | ||||||||
| 9754 | return true; | ||||||||
| 9755 | |||||||||
| 9756 | ScalarCast = CK_IntegralToFloating; | ||||||||
| 9757 | } else | ||||||||
| 9758 | return true; | ||||||||
| 9759 | } else if (ScalarTy->isEnumeralType()) | ||||||||
| 9760 | return true; | ||||||||
| 9761 | |||||||||
| 9762 | // Adjust scalar if desired. | ||||||||
| 9763 | if (Scalar) { | ||||||||
| 9764 | if (ScalarCast != CK_NoOp) | ||||||||
| 9765 | *Scalar = S.ImpCastExprToType(Scalar->get(), VectorEltTy, ScalarCast); | ||||||||
| 9766 | *Scalar = S.ImpCastExprToType(Scalar->get(), VectorTy, CK_VectorSplat); | ||||||||
| 9767 | } | ||||||||
| 9768 | return false; | ||||||||
| 9769 | } | ||||||||
| 9770 | |||||||||
| 9771 | QualType Sema::CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 9772 | SourceLocation Loc, bool IsCompAssign, | ||||||||
| 9773 | bool AllowBothBool, | ||||||||
| 9774 | bool AllowBoolConversions) { | ||||||||
| 9775 | if (!IsCompAssign) { | ||||||||
| 9776 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
| 9777 | if (LHS.isInvalid()) | ||||||||
| 9778 | return QualType(); | ||||||||
| 9779 | } | ||||||||
| 9780 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
| 9781 | if (RHS.isInvalid()) | ||||||||
| 9782 | return QualType(); | ||||||||
| 9783 | |||||||||
| 9784 | // For conversion purposes, we ignore any qualifiers. | ||||||||
| 9785 | // For example, "const float" and "float" are equivalent. | ||||||||
| 9786 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||||||
| 9787 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||||||
| 9788 | |||||||||
| 9789 | const VectorType *LHSVecType = LHSType->getAs<VectorType>(); | ||||||||
| 9790 | const VectorType *RHSVecType = RHSType->getAs<VectorType>(); | ||||||||
| 9791 | assert(LHSVecType || RHSVecType)((LHSVecType || RHSVecType) ? static_cast<void> (0) : __assert_fail ("LHSVecType || RHSVecType", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 9791, __PRETTY_FUNCTION__)); | ||||||||
| 9792 | |||||||||
| 9793 | // AltiVec-style "vector bool op vector bool" combinations are allowed | ||||||||
| 9794 | // for some operators but not others. | ||||||||
| 9795 | if (!AllowBothBool && | ||||||||
| 9796 | LHSVecType && LHSVecType->getVectorKind() == VectorType::AltiVecBool && | ||||||||
| 9797 | RHSVecType && RHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||||||
| 9798 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 9799 | |||||||||
| 9800 | // If the vector types are identical, return. | ||||||||
| 9801 | if (Context.hasSameType(LHSType, RHSType)) | ||||||||
| 9802 | return LHSType; | ||||||||
| 9803 | |||||||||
| 9804 | // If we have compatible AltiVec and GCC vector types, use the AltiVec type. | ||||||||
| 9805 | if (LHSVecType && RHSVecType && | ||||||||
| 9806 | Context.areCompatibleVectorTypes(LHSType, RHSType)) { | ||||||||
| 9807 | if (isa<ExtVectorType>(LHSVecType)) { | ||||||||
| 9808 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
| 9809 | return LHSType; | ||||||||
| 9810 | } | ||||||||
| 9811 | |||||||||
| 9812 | if (!IsCompAssign) | ||||||||
| 9813 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||||||
| 9814 | return RHSType; | ||||||||
| 9815 | } | ||||||||
| 9816 | |||||||||
| 9817 | // AllowBoolConversions says that bool and non-bool AltiVec vectors | ||||||||
| 9818 | // can be mixed, with the result being the non-bool type. The non-bool | ||||||||
| 9819 | // operand must have integer element type. | ||||||||
| 9820 | if (AllowBoolConversions && LHSVecType && RHSVecType && | ||||||||
| 9821 | LHSVecType->getNumElements() == RHSVecType->getNumElements() && | ||||||||
| 9822 | (Context.getTypeSize(LHSVecType->getElementType()) == | ||||||||
| 9823 | Context.getTypeSize(RHSVecType->getElementType()))) { | ||||||||
| 9824 | if (LHSVecType->getVectorKind() == VectorType::AltiVecVector && | ||||||||
| 9825 | LHSVecType->getElementType()->isIntegerType() && | ||||||||
| 9826 | RHSVecType->getVectorKind() == VectorType::AltiVecBool) { | ||||||||
| 9827 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
| 9828 | return LHSType; | ||||||||
| 9829 | } | ||||||||
| 9830 | if (!IsCompAssign && | ||||||||
| 9831 | LHSVecType->getVectorKind() == VectorType::AltiVecBool && | ||||||||
| 9832 | RHSVecType->getVectorKind() == VectorType::AltiVecVector && | ||||||||
| 9833 | RHSVecType->getElementType()->isIntegerType()) { | ||||||||
| 9834 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||||||
| 9835 | return RHSType; | ||||||||
| 9836 | } | ||||||||
| 9837 | } | ||||||||
| 9838 | |||||||||
| 9839 | // If there's a vector type and a scalar, try to convert the scalar to | ||||||||
| 9840 | // the vector element type and splat. | ||||||||
| 9841 | unsigned DiagID = diag::err_typecheck_vector_not_convertable; | ||||||||
| 9842 | if (!RHSVecType) { | ||||||||
| 9843 | if (isa<ExtVectorType>(LHSVecType)) { | ||||||||
| 9844 | if (!tryVectorConvertAndSplat(*this, &RHS, RHSType, | ||||||||
| 9845 | LHSVecType->getElementType(), LHSType, | ||||||||
| 9846 | DiagID)) | ||||||||
| 9847 | return LHSType; | ||||||||
| 9848 | } else { | ||||||||
| 9849 | if (!tryGCCVectorConvertAndSplat(*this, &RHS, &LHS)) | ||||||||
| 9850 | return LHSType; | ||||||||
| 9851 | } | ||||||||
| 9852 | } | ||||||||
| 9853 | if (!LHSVecType) { | ||||||||
| 9854 | if (isa<ExtVectorType>(RHSVecType)) { | ||||||||
| 9855 | if (!tryVectorConvertAndSplat(*this, (IsCompAssign ? nullptr : &LHS), | ||||||||
| 9856 | LHSType, RHSVecType->getElementType(), | ||||||||
| 9857 | RHSType, DiagID)) | ||||||||
| 9858 | return RHSType; | ||||||||
| 9859 | } else { | ||||||||
| 9860 | if (LHS.get()->getValueKind() == VK_LValue || | ||||||||
| 9861 | !tryGCCVectorConvertAndSplat(*this, &LHS, &RHS)) | ||||||||
| 9862 | return RHSType; | ||||||||
| 9863 | } | ||||||||
| 9864 | } | ||||||||
| 9865 | |||||||||
| 9866 | // FIXME: The code below also handles conversion between vectors and | ||||||||
| 9867 | // non-scalars, we should break this down into fine grained specific checks | ||||||||
| 9868 | // and emit proper diagnostics. | ||||||||
| 9869 | QualType VecType = LHSVecType ? LHSType : RHSType; | ||||||||
| 9870 | const VectorType *VT = LHSVecType ? LHSVecType : RHSVecType; | ||||||||
| 9871 | QualType OtherType = LHSVecType ? RHSType : LHSType; | ||||||||
| 9872 | ExprResult *OtherExpr = LHSVecType ? &RHS : &LHS; | ||||||||
| 9873 | if (isLaxVectorConversion(OtherType, VecType)) { | ||||||||
| 9874 | // If we're allowing lax vector conversions, only the total (data) size | ||||||||
| 9875 | // needs to be the same. For non compound assignment, if one of the types is | ||||||||
| 9876 | // scalar, the result is always the vector type. | ||||||||
| 9877 | if (!IsCompAssign) { | ||||||||
| 9878 | *OtherExpr = ImpCastExprToType(OtherExpr->get(), VecType, CK_BitCast); | ||||||||
| 9879 | return VecType; | ||||||||
| 9880 | // In a compound assignment, lhs += rhs, 'lhs' is a lvalue src, forbidding | ||||||||
| 9881 | // any implicit cast. Here, the 'rhs' should be implicit casted to 'lhs' | ||||||||
| 9882 | // type. Note that this is already done by non-compound assignments in | ||||||||
| 9883 | // CheckAssignmentConstraints. If it's a scalar type, only bitcast for | ||||||||
| 9884 | // <1 x T> -> T. The result is also a vector type. | ||||||||
| 9885 | } else if (OtherType->isExtVectorType() || OtherType->isVectorType() || | ||||||||
| 9886 | (OtherType->isScalarType() && VT->getNumElements() == 1)) { | ||||||||
| 9887 | ExprResult *RHSExpr = &RHS; | ||||||||
| 9888 | *RHSExpr = ImpCastExprToType(RHSExpr->get(), LHSType, CK_BitCast); | ||||||||
| 9889 | return VecType; | ||||||||
| 9890 | } | ||||||||
| 9891 | } | ||||||||
| 9892 | |||||||||
| 9893 | // Okay, the expression is invalid. | ||||||||
| 9894 | |||||||||
| 9895 | // If there's a non-vector, non-real operand, diagnose that. | ||||||||
| 9896 | if ((!RHSVecType && !RHSType->isRealType()) || | ||||||||
| 9897 | (!LHSVecType && !LHSType->isRealType())) { | ||||||||
| 9898 | Diag(Loc, diag::err_typecheck_vector_not_convertable_non_scalar) | ||||||||
| 9899 | << LHSType << RHSType | ||||||||
| 9900 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 9901 | return QualType(); | ||||||||
| 9902 | } | ||||||||
| 9903 | |||||||||
| 9904 | // OpenCL V1.1 6.2.6.p1: | ||||||||
| 9905 | // If the operands are of more than one vector type, then an error shall | ||||||||
| 9906 | // occur. Implicit conversions between vector types are not permitted, per | ||||||||
| 9907 | // section 6.2.1. | ||||||||
| 9908 | if (getLangOpts().OpenCL && | ||||||||
| 9909 | RHSVecType && isa<ExtVectorType>(RHSVecType) && | ||||||||
| 9910 | LHSVecType && isa<ExtVectorType>(LHSVecType)) { | ||||||||
| 9911 | Diag(Loc, diag::err_opencl_implicit_vector_conversion) << LHSType | ||||||||
| 9912 | << RHSType; | ||||||||
| 9913 | return QualType(); | ||||||||
| 9914 | } | ||||||||
| 9915 | |||||||||
| 9916 | |||||||||
| 9917 | // If there is a vector type that is not a ExtVector and a scalar, we reach | ||||||||
| 9918 | // this point if scalar could not be converted to the vector's element type | ||||||||
| 9919 | // without truncation. | ||||||||
| 9920 | if ((RHSVecType && !isa<ExtVectorType>(RHSVecType)) || | ||||||||
| 9921 | (LHSVecType && !isa<ExtVectorType>(LHSVecType))) { | ||||||||
| 9922 | QualType Scalar = LHSVecType ? RHSType : LHSType; | ||||||||
| 9923 | QualType Vector = LHSVecType ? LHSType : RHSType; | ||||||||
| 9924 | unsigned ScalarOrVector = LHSVecType && RHSVecType ? 1 : 0; | ||||||||
| 9925 | Diag(Loc, | ||||||||
| 9926 | diag::err_typecheck_vector_not_convertable_implict_truncation) | ||||||||
| 9927 | << ScalarOrVector << Scalar << Vector; | ||||||||
| 9928 | |||||||||
| 9929 | return QualType(); | ||||||||
| 9930 | } | ||||||||
| 9931 | |||||||||
| 9932 | // Otherwise, use the generic diagnostic. | ||||||||
| 9933 | Diag(Loc, DiagID) | ||||||||
| 9934 | << LHSType << RHSType | ||||||||
| 9935 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 9936 | return QualType(); | ||||||||
| 9937 | } | ||||||||
| 9938 | |||||||||
| 9939 | // checkArithmeticNull - Detect when a NULL constant is used improperly in an | ||||||||
| 9940 | // expression. These are mainly cases where the null pointer is used as an | ||||||||
| 9941 | // integer instead of a pointer. | ||||||||
| 9942 | static void checkArithmeticNull(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
| 9943 | SourceLocation Loc, bool IsCompare) { | ||||||||
| 9944 | // The canonical way to check for a GNU null is with isNullPointerConstant, | ||||||||
| 9945 | // but we use a bit of a hack here for speed; this is a relatively | ||||||||
| 9946 | // hot path, and isNullPointerConstant is slow. | ||||||||
| 9947 | bool LHSNull = isa<GNUNullExpr>(LHS.get()->IgnoreParenImpCasts()); | ||||||||
| 9948 | bool RHSNull = isa<GNUNullExpr>(RHS.get()->IgnoreParenImpCasts()); | ||||||||
| 9949 | |||||||||
| 9950 | QualType NonNullType = LHSNull ? RHS.get()->getType() : LHS.get()->getType(); | ||||||||
| 9951 | |||||||||
| 9952 | // Avoid analyzing cases where the result will either be invalid (and | ||||||||
| 9953 | // diagnosed as such) or entirely valid and not something to warn about. | ||||||||
| 9954 | if ((!LHSNull && !RHSNull) || NonNullType->isBlockPointerType() || | ||||||||
| 9955 | NonNullType->isMemberPointerType() || NonNullType->isFunctionType()) | ||||||||
| 9956 | return; | ||||||||
| 9957 | |||||||||
| 9958 | // Comparison operations would not make sense with a null pointer no matter | ||||||||
| 9959 | // what the other expression is. | ||||||||
| 9960 | if (!IsCompare) { | ||||||||
| 9961 | S.Diag(Loc, diag::warn_null_in_arithmetic_operation) | ||||||||
| 9962 | << (LHSNull ? LHS.get()->getSourceRange() : SourceRange()) | ||||||||
| 9963 | << (RHSNull ? RHS.get()->getSourceRange() : SourceRange()); | ||||||||
| 9964 | return; | ||||||||
| 9965 | } | ||||||||
| 9966 | |||||||||
| 9967 | // The rest of the operations only make sense with a null pointer | ||||||||
| 9968 | // if the other expression is a pointer. | ||||||||
| 9969 | if (LHSNull == RHSNull || NonNullType->isAnyPointerType() || | ||||||||
| 9970 | NonNullType->canDecayToPointerType()) | ||||||||
| 9971 | return; | ||||||||
| 9972 | |||||||||
| 9973 | S.Diag(Loc, diag::warn_null_in_comparison_operation) | ||||||||
| 9974 | << LHSNull /* LHS is NULL */ << NonNullType | ||||||||
| 9975 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 9976 | } | ||||||||
| 9977 | |||||||||
| 9978 | static void DiagnoseDivisionSizeofPointerOrArray(Sema &S, Expr *LHS, Expr *RHS, | ||||||||
| 9979 | SourceLocation Loc) { | ||||||||
| 9980 | const auto *LUE = dyn_cast<UnaryExprOrTypeTraitExpr>(LHS); | ||||||||
| 9981 | const auto *RUE = dyn_cast<UnaryExprOrTypeTraitExpr>(RHS); | ||||||||
| 9982 | if (!LUE || !RUE) | ||||||||
| 9983 | return; | ||||||||
| 9984 | if (LUE->getKind() != UETT_SizeOf || LUE->isArgumentType() || | ||||||||
| 9985 | RUE->getKind() != UETT_SizeOf) | ||||||||
| 9986 | return; | ||||||||
| 9987 | |||||||||
| 9988 | const Expr *LHSArg = LUE->getArgumentExpr()->IgnoreParens(); | ||||||||
| 9989 | QualType LHSTy = LHSArg->getType(); | ||||||||
| 9990 | QualType RHSTy; | ||||||||
| 9991 | |||||||||
| 9992 | if (RUE->isArgumentType()) | ||||||||
| 9993 | RHSTy = RUE->getArgumentType(); | ||||||||
| 9994 | else | ||||||||
| 9995 | RHSTy = RUE->getArgumentExpr()->IgnoreParens()->getType(); | ||||||||
| 9996 | |||||||||
| 9997 | if (LHSTy->isPointerType() && !RHSTy->isPointerType()) { | ||||||||
| 9998 | if (!S.Context.hasSameUnqualifiedType(LHSTy->getPointeeType(), RHSTy)) | ||||||||
| 9999 | return; | ||||||||
| 10000 | |||||||||
| 10001 | S.Diag(Loc, diag::warn_division_sizeof_ptr) << LHS << LHS->getSourceRange(); | ||||||||
| 10002 | if (const auto *DRE = dyn_cast<DeclRefExpr>(LHSArg)) { | ||||||||
| 10003 | if (const ValueDecl *LHSArgDecl = DRE->getDecl()) | ||||||||
| 10004 | S.Diag(LHSArgDecl->getLocation(), diag::note_pointer_declared_here) | ||||||||
| 10005 | << LHSArgDecl; | ||||||||
| 10006 | } | ||||||||
| 10007 | } else if (const auto *ArrayTy = S.Context.getAsArrayType(LHSTy)) { | ||||||||
| 10008 | QualType ArrayElemTy = ArrayTy->getElementType(); | ||||||||
| 10009 | if (ArrayElemTy != S.Context.getBaseElementType(ArrayTy) || | ||||||||
| 10010 | ArrayElemTy->isDependentType() || RHSTy->isDependentType() || | ||||||||
| 10011 | ArrayElemTy->isCharType() || | ||||||||
| 10012 | S.Context.getTypeSize(ArrayElemTy) == S.Context.getTypeSize(RHSTy)) | ||||||||
| 10013 | return; | ||||||||
| 10014 | S.Diag(Loc, diag::warn_division_sizeof_array) | ||||||||
| 10015 | << LHSArg->getSourceRange() << ArrayElemTy << RHSTy; | ||||||||
| 10016 | if (const auto *DRE = dyn_cast<DeclRefExpr>(LHSArg)) { | ||||||||
| 10017 | if (const ValueDecl *LHSArgDecl = DRE->getDecl()) | ||||||||
| 10018 | S.Diag(LHSArgDecl->getLocation(), diag::note_array_declared_here) | ||||||||
| 10019 | << LHSArgDecl; | ||||||||
| 10020 | } | ||||||||
| 10021 | |||||||||
| 10022 | S.Diag(Loc, diag::note_precedence_silence) << RHS; | ||||||||
| 10023 | } | ||||||||
| 10024 | } | ||||||||
| 10025 | |||||||||
| 10026 | static void DiagnoseBadDivideOrRemainderValues(Sema& S, ExprResult &LHS, | ||||||||
| 10027 | ExprResult &RHS, | ||||||||
| 10028 | SourceLocation Loc, bool IsDiv) { | ||||||||
| 10029 | // Check for division/remainder by zero. | ||||||||
| 10030 | Expr::EvalResult RHSValue; | ||||||||
| 10031 | if (!RHS.get()->isValueDependent() && | ||||||||
| 10032 | RHS.get()->EvaluateAsInt(RHSValue, S.Context) && | ||||||||
| 10033 | RHSValue.Val.getInt() == 0) | ||||||||
| 10034 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||||||
| 10035 | S.PDiag(diag::warn_remainder_division_by_zero) | ||||||||
| 10036 | << IsDiv << RHS.get()->getSourceRange()); | ||||||||
| 10037 | } | ||||||||
| 10038 | |||||||||
| 10039 | QualType Sema::CheckMultiplyDivideOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10040 | SourceLocation Loc, | ||||||||
| 10041 | bool IsCompAssign, bool IsDiv) { | ||||||||
| 10042 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
| 10043 | |||||||||
| 10044 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 10045 | RHS.get()->getType()->isVectorType()) | ||||||||
| 10046 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||||||
| 10047 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
| 10048 | /*AllowBoolConversions*/false); | ||||||||
| 10049 | if (!IsDiv && (LHS.get()->getType()->isConstantMatrixType() || | ||||||||
| 10050 | RHS.get()->getType()->isConstantMatrixType())) | ||||||||
| 10051 | return CheckMatrixMultiplyOperands(LHS, RHS, Loc, IsCompAssign); | ||||||||
| 10052 | |||||||||
| 10053 | QualType compType = UsualArithmeticConversions( | ||||||||
| 10054 | LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
| 10055 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 10056 | return QualType(); | ||||||||
| 10057 | |||||||||
| 10058 | |||||||||
| 10059 | if (compType.isNull() || !compType->isArithmeticType()) | ||||||||
| 10060 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10061 | if (IsDiv) { | ||||||||
| 10062 | DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, IsDiv); | ||||||||
| 10063 | DiagnoseDivisionSizeofPointerOrArray(*this, LHS.get(), RHS.get(), Loc); | ||||||||
| 10064 | } | ||||||||
| 10065 | return compType; | ||||||||
| 10066 | } | ||||||||
| 10067 | |||||||||
| 10068 | QualType Sema::CheckRemainderOperands( | ||||||||
| 10069 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign) { | ||||||||
| 10070 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
| 10071 | |||||||||
| 10072 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 10073 | RHS.get()->getType()->isVectorType()) { | ||||||||
| 10074 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||||||
| 10075 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||||||
| 10076 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||||||
| 10077 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
| 10078 | /*AllowBoolConversions*/false); | ||||||||
| 10079 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10080 | } | ||||||||
| 10081 | |||||||||
| 10082 | QualType compType = UsualArithmeticConversions( | ||||||||
| 10083 | LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
| 10084 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 10085 | return QualType(); | ||||||||
| 10086 | |||||||||
| 10087 | if (compType.isNull() || !compType->isIntegerType()) | ||||||||
| 10088 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10089 | DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, false /* IsDiv */); | ||||||||
| 10090 | return compType; | ||||||||
| 10091 | } | ||||||||
| 10092 | |||||||||
| 10093 | /// Diagnose invalid arithmetic on two void pointers. | ||||||||
| 10094 | static void diagnoseArithmeticOnTwoVoidPointers(Sema &S, SourceLocation Loc, | ||||||||
| 10095 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 10096 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
| 10097 | ? diag::err_typecheck_pointer_arith_void_type | ||||||||
| 10098 | : diag::ext_gnu_void_ptr) | ||||||||
| 10099 | << 1 /* two pointers */ << LHSExpr->getSourceRange() | ||||||||
| 10100 | << RHSExpr->getSourceRange(); | ||||||||
| 10101 | } | ||||||||
| 10102 | |||||||||
| 10103 | /// Diagnose invalid arithmetic on a void pointer. | ||||||||
| 10104 | static void diagnoseArithmeticOnVoidPointer(Sema &S, SourceLocation Loc, | ||||||||
| 10105 | Expr *Pointer) { | ||||||||
| 10106 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
| 10107 | ? diag::err_typecheck_pointer_arith_void_type | ||||||||
| 10108 | : diag::ext_gnu_void_ptr) | ||||||||
| 10109 | << 0 /* one pointer */ << Pointer->getSourceRange(); | ||||||||
| 10110 | } | ||||||||
| 10111 | |||||||||
| 10112 | /// Diagnose invalid arithmetic on a null pointer. | ||||||||
| 10113 | /// | ||||||||
| 10114 | /// If \p IsGNUIdiom is true, the operation is using the 'p = (i8*)nullptr + n' | ||||||||
| 10115 | /// idiom, which we recognize as a GNU extension. | ||||||||
| 10116 | /// | ||||||||
| 10117 | static void diagnoseArithmeticOnNullPointer(Sema &S, SourceLocation Loc, | ||||||||
| 10118 | Expr *Pointer, bool IsGNUIdiom) { | ||||||||
| 10119 | if (IsGNUIdiom) | ||||||||
| 10120 | S.Diag(Loc, diag::warn_gnu_null_ptr_arith) | ||||||||
| 10121 | << Pointer->getSourceRange(); | ||||||||
| 10122 | else | ||||||||
| 10123 | S.Diag(Loc, diag::warn_pointer_arith_null_ptr) | ||||||||
| 10124 | << S.getLangOpts().CPlusPlus << Pointer->getSourceRange(); | ||||||||
| 10125 | } | ||||||||
| 10126 | |||||||||
| 10127 | /// Diagnose invalid arithmetic on two function pointers. | ||||||||
| 10128 | static void diagnoseArithmeticOnTwoFunctionPointers(Sema &S, SourceLocation Loc, | ||||||||
| 10129 | Expr *LHS, Expr *RHS) { | ||||||||
| 10130 | assert(LHS->getType()->isAnyPointerType())((LHS->getType()->isAnyPointerType()) ? static_cast< void> (0) : __assert_fail ("LHS->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10130, __PRETTY_FUNCTION__)); | ||||||||
| 10131 | assert(RHS->getType()->isAnyPointerType())((RHS->getType()->isAnyPointerType()) ? static_cast< void> (0) : __assert_fail ("RHS->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10131, __PRETTY_FUNCTION__)); | ||||||||
| 10132 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
| 10133 | ? diag::err_typecheck_pointer_arith_function_type | ||||||||
| 10134 | : diag::ext_gnu_ptr_func_arith) | ||||||||
| 10135 | << 1 /* two pointers */ << LHS->getType()->getPointeeType() | ||||||||
| 10136 | // We only show the second type if it differs from the first. | ||||||||
| 10137 | << (unsigned)!S.Context.hasSameUnqualifiedType(LHS->getType(), | ||||||||
| 10138 | RHS->getType()) | ||||||||
| 10139 | << RHS->getType()->getPointeeType() | ||||||||
| 10140 | << LHS->getSourceRange() << RHS->getSourceRange(); | ||||||||
| 10141 | } | ||||||||
| 10142 | |||||||||
| 10143 | /// Diagnose invalid arithmetic on a function pointer. | ||||||||
| 10144 | static void diagnoseArithmeticOnFunctionPointer(Sema &S, SourceLocation Loc, | ||||||||
| 10145 | Expr *Pointer) { | ||||||||
| 10146 | assert(Pointer->getType()->isAnyPointerType())((Pointer->getType()->isAnyPointerType()) ? static_cast <void> (0) : __assert_fail ("Pointer->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10146, __PRETTY_FUNCTION__)); | ||||||||
| 10147 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||||||
| 10148 | ? diag::err_typecheck_pointer_arith_function_type | ||||||||
| 10149 | : diag::ext_gnu_ptr_func_arith) | ||||||||
| 10150 | << 0 /* one pointer */ << Pointer->getType()->getPointeeType() | ||||||||
| 10151 | << 0 /* one pointer, so only one type */ | ||||||||
| 10152 | << Pointer->getSourceRange(); | ||||||||
| 10153 | } | ||||||||
| 10154 | |||||||||
| 10155 | /// Emit error if Operand is incomplete pointer type | ||||||||
| 10156 | /// | ||||||||
| 10157 | /// \returns True if pointer has incomplete type | ||||||||
| 10158 | static bool checkArithmeticIncompletePointerType(Sema &S, SourceLocation Loc, | ||||||||
| 10159 | Expr *Operand) { | ||||||||
| 10160 | QualType ResType = Operand->getType(); | ||||||||
| 10161 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||||||
| 10162 | ResType = ResAtomicType->getValueType(); | ||||||||
| 10163 | |||||||||
| 10164 | assert(ResType->isAnyPointerType() && !ResType->isDependentType())((ResType->isAnyPointerType() && !ResType->isDependentType ()) ? static_cast<void> (0) : __assert_fail ("ResType->isAnyPointerType() && !ResType->isDependentType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10164, __PRETTY_FUNCTION__)); | ||||||||
| 10165 | QualType PointeeTy = ResType->getPointeeType(); | ||||||||
| 10166 | return S.RequireCompleteSizedType( | ||||||||
| 10167 | Loc, PointeeTy, | ||||||||
| 10168 | diag::err_typecheck_arithmetic_incomplete_or_sizeless_type, | ||||||||
| 10169 | Operand->getSourceRange()); | ||||||||
| 10170 | } | ||||||||
| 10171 | |||||||||
| 10172 | /// Check the validity of an arithmetic pointer operand. | ||||||||
| 10173 | /// | ||||||||
| 10174 | /// If the operand has pointer type, this code will check for pointer types | ||||||||
| 10175 | /// which are invalid in arithmetic operations. These will be diagnosed | ||||||||
| 10176 | /// appropriately, including whether or not the use is supported as an | ||||||||
| 10177 | /// extension. | ||||||||
| 10178 | /// | ||||||||
| 10179 | /// \returns True when the operand is valid to use (even if as an extension). | ||||||||
| 10180 | static bool checkArithmeticOpPointerOperand(Sema &S, SourceLocation Loc, | ||||||||
| 10181 | Expr *Operand) { | ||||||||
| 10182 | QualType ResType = Operand->getType(); | ||||||||
| 10183 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||||||
| 10184 | ResType = ResAtomicType->getValueType(); | ||||||||
| 10185 | |||||||||
| 10186 | if (!ResType->isAnyPointerType()) return true; | ||||||||
| 10187 | |||||||||
| 10188 | QualType PointeeTy = ResType->getPointeeType(); | ||||||||
| 10189 | if (PointeeTy->isVoidType()) { | ||||||||
| 10190 | diagnoseArithmeticOnVoidPointer(S, Loc, Operand); | ||||||||
| 10191 | return !S.getLangOpts().CPlusPlus; | ||||||||
| 10192 | } | ||||||||
| 10193 | if (PointeeTy->isFunctionType()) { | ||||||||
| 10194 | diagnoseArithmeticOnFunctionPointer(S, Loc, Operand); | ||||||||
| 10195 | return !S.getLangOpts().CPlusPlus; | ||||||||
| 10196 | } | ||||||||
| 10197 | |||||||||
| 10198 | if (checkArithmeticIncompletePointerType(S, Loc, Operand)) return false; | ||||||||
| 10199 | |||||||||
| 10200 | return true; | ||||||||
| 10201 | } | ||||||||
| 10202 | |||||||||
| 10203 | /// Check the validity of a binary arithmetic operation w.r.t. pointer | ||||||||
| 10204 | /// operands. | ||||||||
| 10205 | /// | ||||||||
| 10206 | /// This routine will diagnose any invalid arithmetic on pointer operands much | ||||||||
| 10207 | /// like \see checkArithmeticOpPointerOperand. However, it has special logic | ||||||||
| 10208 | /// for emitting a single diagnostic even for operations where both LHS and RHS | ||||||||
| 10209 | /// are (potentially problematic) pointers. | ||||||||
| 10210 | /// | ||||||||
| 10211 | /// \returns True when the operand is valid to use (even if as an extension). | ||||||||
| 10212 | static bool checkArithmeticBinOpPointerOperands(Sema &S, SourceLocation Loc, | ||||||||
| 10213 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 10214 | bool isLHSPointer = LHSExpr->getType()->isAnyPointerType(); | ||||||||
| 10215 | bool isRHSPointer = RHSExpr->getType()->isAnyPointerType(); | ||||||||
| 10216 | if (!isLHSPointer && !isRHSPointer) return true; | ||||||||
| 10217 | |||||||||
| 10218 | QualType LHSPointeeTy, RHSPointeeTy; | ||||||||
| 10219 | if (isLHSPointer) LHSPointeeTy = LHSExpr->getType()->getPointeeType(); | ||||||||
| 10220 | if (isRHSPointer) RHSPointeeTy = RHSExpr->getType()->getPointeeType(); | ||||||||
| 10221 | |||||||||
| 10222 | // if both are pointers check if operation is valid wrt address spaces | ||||||||
| 10223 | if (isLHSPointer && isRHSPointer) { | ||||||||
| 10224 | if (!LHSPointeeTy.isAddressSpaceOverlapping(RHSPointeeTy)) { | ||||||||
| 10225 | S.Diag(Loc, | ||||||||
| 10226 | diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||||||
| 10227 | << LHSExpr->getType() << RHSExpr->getType() << 1 /*arithmetic op*/ | ||||||||
| 10228 | << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); | ||||||||
| 10229 | return false; | ||||||||
| 10230 | } | ||||||||
| 10231 | } | ||||||||
| 10232 | |||||||||
| 10233 | // Check for arithmetic on pointers to incomplete types. | ||||||||
| 10234 | bool isLHSVoidPtr = isLHSPointer && LHSPointeeTy->isVoidType(); | ||||||||
| 10235 | bool isRHSVoidPtr = isRHSPointer && RHSPointeeTy->isVoidType(); | ||||||||
| 10236 | if (isLHSVoidPtr || isRHSVoidPtr) { | ||||||||
| 10237 | if (!isRHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, LHSExpr); | ||||||||
| 10238 | else if (!isLHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, RHSExpr); | ||||||||
| 10239 | else diagnoseArithmeticOnTwoVoidPointers(S, Loc, LHSExpr, RHSExpr); | ||||||||
| 10240 | |||||||||
| 10241 | return !S.getLangOpts().CPlusPlus; | ||||||||
| 10242 | } | ||||||||
| 10243 | |||||||||
| 10244 | bool isLHSFuncPtr = isLHSPointer && LHSPointeeTy->isFunctionType(); | ||||||||
| 10245 | bool isRHSFuncPtr = isRHSPointer && RHSPointeeTy->isFunctionType(); | ||||||||
| 10246 | if (isLHSFuncPtr || isRHSFuncPtr) { | ||||||||
| 10247 | if (!isRHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, LHSExpr); | ||||||||
| 10248 | else if (!isLHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, | ||||||||
| 10249 | RHSExpr); | ||||||||
| 10250 | else diagnoseArithmeticOnTwoFunctionPointers(S, Loc, LHSExpr, RHSExpr); | ||||||||
| 10251 | |||||||||
| 10252 | return !S.getLangOpts().CPlusPlus; | ||||||||
| 10253 | } | ||||||||
| 10254 | |||||||||
| 10255 | if (isLHSPointer && checkArithmeticIncompletePointerType(S, Loc, LHSExpr)) | ||||||||
| 10256 | return false; | ||||||||
| 10257 | if (isRHSPointer && checkArithmeticIncompletePointerType(S, Loc, RHSExpr)) | ||||||||
| 10258 | return false; | ||||||||
| 10259 | |||||||||
| 10260 | return true; | ||||||||
| 10261 | } | ||||||||
| 10262 | |||||||||
| 10263 | /// diagnoseStringPlusInt - Emit a warning when adding an integer to a string | ||||||||
| 10264 | /// literal. | ||||||||
| 10265 | static void diagnoseStringPlusInt(Sema &Self, SourceLocation OpLoc, | ||||||||
| 10266 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 10267 | StringLiteral* StrExpr = dyn_cast<StringLiteral>(LHSExpr->IgnoreImpCasts()); | ||||||||
| 10268 | Expr* IndexExpr = RHSExpr; | ||||||||
| 10269 | if (!StrExpr) { | ||||||||
| 10270 | StrExpr = dyn_cast<StringLiteral>(RHSExpr->IgnoreImpCasts()); | ||||||||
| 10271 | IndexExpr = LHSExpr; | ||||||||
| 10272 | } | ||||||||
| 10273 | |||||||||
| 10274 | bool IsStringPlusInt = StrExpr && | ||||||||
| 10275 | IndexExpr->getType()->isIntegralOrUnscopedEnumerationType(); | ||||||||
| 10276 | if (!IsStringPlusInt || IndexExpr->isValueDependent()) | ||||||||
| 10277 | return; | ||||||||
| 10278 | |||||||||
| 10279 | SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
| 10280 | Self.Diag(OpLoc, diag::warn_string_plus_int) | ||||||||
| 10281 | << DiagRange << IndexExpr->IgnoreImpCasts()->getType(); | ||||||||
| 10282 | |||||||||
| 10283 | // Only print a fixit for "str" + int, not for int + "str". | ||||||||
| 10284 | if (IndexExpr == RHSExpr) { | ||||||||
| 10285 | SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); | ||||||||
| 10286 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) | ||||||||
| 10287 | << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") | ||||||||
| 10288 | << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") | ||||||||
| 10289 | << FixItHint::CreateInsertion(EndLoc, "]"); | ||||||||
| 10290 | } else | ||||||||
| 10291 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); | ||||||||
| 10292 | } | ||||||||
| 10293 | |||||||||
| 10294 | /// Emit a warning when adding a char literal to a string. | ||||||||
| 10295 | static void diagnoseStringPlusChar(Sema &Self, SourceLocation OpLoc, | ||||||||
| 10296 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 10297 | const Expr *StringRefExpr = LHSExpr; | ||||||||
| 10298 | const CharacterLiteral *CharExpr = | ||||||||
| 10299 | dyn_cast<CharacterLiteral>(RHSExpr->IgnoreImpCasts()); | ||||||||
| 10300 | |||||||||
| 10301 | if (!CharExpr) { | ||||||||
| 10302 | CharExpr = dyn_cast<CharacterLiteral>(LHSExpr->IgnoreImpCasts()); | ||||||||
| 10303 | StringRefExpr = RHSExpr; | ||||||||
| 10304 | } | ||||||||
| 10305 | |||||||||
| 10306 | if (!CharExpr || !StringRefExpr) | ||||||||
| 10307 | return; | ||||||||
| 10308 | |||||||||
| 10309 | const QualType StringType = StringRefExpr->getType(); | ||||||||
| 10310 | |||||||||
| 10311 | // Return if not a PointerType. | ||||||||
| 10312 | if (!StringType->isAnyPointerType()) | ||||||||
| 10313 | return; | ||||||||
| 10314 | |||||||||
| 10315 | // Return if not a CharacterType. | ||||||||
| 10316 | if (!StringType->getPointeeType()->isAnyCharacterType()) | ||||||||
| 10317 | return; | ||||||||
| 10318 | |||||||||
| 10319 | ASTContext &Ctx = Self.getASTContext(); | ||||||||
| 10320 | SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
| 10321 | |||||||||
| 10322 | const QualType CharType = CharExpr->getType(); | ||||||||
| 10323 | if (!CharType->isAnyCharacterType() && | ||||||||
| 10324 | CharType->isIntegerType() && | ||||||||
| 10325 | llvm::isUIntN(Ctx.getCharWidth(), CharExpr->getValue())) { | ||||||||
| 10326 | Self.Diag(OpLoc, diag::warn_string_plus_char) | ||||||||
| 10327 | << DiagRange << Ctx.CharTy; | ||||||||
| 10328 | } else { | ||||||||
| 10329 | Self.Diag(OpLoc, diag::warn_string_plus_char) | ||||||||
| 10330 | << DiagRange << CharExpr->getType(); | ||||||||
| 10331 | } | ||||||||
| 10332 | |||||||||
| 10333 | // Only print a fixit for str + char, not for char + str. | ||||||||
| 10334 | if (isa<CharacterLiteral>(RHSExpr->IgnoreImpCasts())) { | ||||||||
| 10335 | SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); | ||||||||
| 10336 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) | ||||||||
| 10337 | << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") | ||||||||
| 10338 | << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") | ||||||||
| 10339 | << FixItHint::CreateInsertion(EndLoc, "]"); | ||||||||
| 10340 | } else { | ||||||||
| 10341 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); | ||||||||
| 10342 | } | ||||||||
| 10343 | } | ||||||||
| 10344 | |||||||||
| 10345 | /// Emit error when two pointers are incompatible. | ||||||||
| 10346 | static void diagnosePointerIncompatibility(Sema &S, SourceLocation Loc, | ||||||||
| 10347 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 10348 | assert(LHSExpr->getType()->isAnyPointerType())((LHSExpr->getType()->isAnyPointerType()) ? static_cast <void> (0) : __assert_fail ("LHSExpr->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10348, __PRETTY_FUNCTION__)); | ||||||||
| 10349 | assert(RHSExpr->getType()->isAnyPointerType())((RHSExpr->getType()->isAnyPointerType()) ? static_cast <void> (0) : __assert_fail ("RHSExpr->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10349, __PRETTY_FUNCTION__)); | ||||||||
| 10350 | S.Diag(Loc, diag::err_typecheck_sub_ptr_compatible) | ||||||||
| 10351 | << LHSExpr->getType() << RHSExpr->getType() << LHSExpr->getSourceRange() | ||||||||
| 10352 | << RHSExpr->getSourceRange(); | ||||||||
| 10353 | } | ||||||||
| 10354 | |||||||||
| 10355 | // C99 6.5.6 | ||||||||
| 10356 | QualType Sema::CheckAdditionOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10357 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||||||
| 10358 | QualType* CompLHSTy) { | ||||||||
| 10359 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
| 10360 | |||||||||
| 10361 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 10362 | RHS.get()->getType()->isVectorType()) { | ||||||||
| 10363 | QualType compType = CheckVectorOperands( | ||||||||
| 10364 | LHS, RHS, Loc, CompLHSTy, | ||||||||
| 10365 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
| 10366 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
| 10367 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
| 10368 | return compType; | ||||||||
| 10369 | } | ||||||||
| 10370 | |||||||||
| 10371 | if (LHS.get()->getType()->isConstantMatrixType() || | ||||||||
| 10372 | RHS.get()->getType()->isConstantMatrixType()) { | ||||||||
| 10373 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); | ||||||||
| 10374 | } | ||||||||
| 10375 | |||||||||
| 10376 | QualType compType = UsualArithmeticConversions( | ||||||||
| 10377 | LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
| 10378 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 10379 | return QualType(); | ||||||||
| 10380 | |||||||||
| 10381 | // Diagnose "string literal" '+' int and string '+' "char literal". | ||||||||
| 10382 | if (Opc == BO_Add) { | ||||||||
| 10383 | diagnoseStringPlusInt(*this, Loc, LHS.get(), RHS.get()); | ||||||||
| 10384 | diagnoseStringPlusChar(*this, Loc, LHS.get(), RHS.get()); | ||||||||
| 10385 | } | ||||||||
| 10386 | |||||||||
| 10387 | // handle the common case first (both operands are arithmetic). | ||||||||
| 10388 | if (!compType.isNull() && compType->isArithmeticType()) { | ||||||||
| 10389 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
| 10390 | return compType; | ||||||||
| 10391 | } | ||||||||
| 10392 | |||||||||
| 10393 | // Type-checking. Ultimately the pointer's going to be in PExp; | ||||||||
| 10394 | // note that we bias towards the LHS being the pointer. | ||||||||
| 10395 | Expr *PExp = LHS.get(), *IExp = RHS.get(); | ||||||||
| 10396 | |||||||||
| 10397 | bool isObjCPointer; | ||||||||
| 10398 | if (PExp->getType()->isPointerType()) { | ||||||||
| 10399 | isObjCPointer = false; | ||||||||
| 10400 | } else if (PExp->getType()->isObjCObjectPointerType()) { | ||||||||
| 10401 | isObjCPointer = true; | ||||||||
| 10402 | } else { | ||||||||
| 10403 | std::swap(PExp, IExp); | ||||||||
| 10404 | if (PExp->getType()->isPointerType()) { | ||||||||
| 10405 | isObjCPointer = false; | ||||||||
| 10406 | } else if (PExp->getType()->isObjCObjectPointerType()) { | ||||||||
| 10407 | isObjCPointer = true; | ||||||||
| 10408 | } else { | ||||||||
| 10409 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10410 | } | ||||||||
| 10411 | } | ||||||||
| 10412 | assert(PExp->getType()->isAnyPointerType())((PExp->getType()->isAnyPointerType()) ? static_cast< void> (0) : __assert_fail ("PExp->getType()->isAnyPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10412, __PRETTY_FUNCTION__)); | ||||||||
| 10413 | |||||||||
| 10414 | if (!IExp->getType()->isIntegerType()) | ||||||||
| 10415 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10416 | |||||||||
| 10417 | // Adding to a null pointer results in undefined behavior. | ||||||||
| 10418 | if (PExp->IgnoreParenCasts()->isNullPointerConstant( | ||||||||
| 10419 | Context, Expr::NPC_ValueDependentIsNotNull)) { | ||||||||
| 10420 | // In C++ adding zero to a null pointer is defined. | ||||||||
| 10421 | Expr::EvalResult KnownVal; | ||||||||
| 10422 | if (!getLangOpts().CPlusPlus || | ||||||||
| 10423 | (!IExp->isValueDependent() && | ||||||||
| 10424 | (!IExp->EvaluateAsInt(KnownVal, Context) || | ||||||||
| 10425 | KnownVal.Val.getInt() != 0))) { | ||||||||
| 10426 | // Check the conditions to see if this is the 'p = nullptr + n' idiom. | ||||||||
| 10427 | bool IsGNUIdiom = BinaryOperator::isNullPointerArithmeticExtension( | ||||||||
| 10428 | Context, BO_Add, PExp, IExp); | ||||||||
| 10429 | diagnoseArithmeticOnNullPointer(*this, Loc, PExp, IsGNUIdiom); | ||||||||
| 10430 | } | ||||||||
| 10431 | } | ||||||||
| 10432 | |||||||||
| 10433 | if (!checkArithmeticOpPointerOperand(*this, Loc, PExp)) | ||||||||
| 10434 | return QualType(); | ||||||||
| 10435 | |||||||||
| 10436 | if (isObjCPointer && checkArithmeticOnObjCPointer(*this, Loc, PExp)) | ||||||||
| 10437 | return QualType(); | ||||||||
| 10438 | |||||||||
| 10439 | // Check array bounds for pointer arithemtic | ||||||||
| 10440 | CheckArrayAccess(PExp, IExp); | ||||||||
| 10441 | |||||||||
| 10442 | if (CompLHSTy) { | ||||||||
| 10443 | QualType LHSTy = Context.isPromotableBitField(LHS.get()); | ||||||||
| 10444 | if (LHSTy.isNull()) { | ||||||||
| 10445 | LHSTy = LHS.get()->getType(); | ||||||||
| 10446 | if (LHSTy->isPromotableIntegerType()) | ||||||||
| 10447 | LHSTy = Context.getPromotedIntegerType(LHSTy); | ||||||||
| 10448 | } | ||||||||
| 10449 | *CompLHSTy = LHSTy; | ||||||||
| 10450 | } | ||||||||
| 10451 | |||||||||
| 10452 | return PExp->getType(); | ||||||||
| 10453 | } | ||||||||
| 10454 | |||||||||
| 10455 | // C99 6.5.6 | ||||||||
| 10456 | QualType Sema::CheckSubtractionOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10457 | SourceLocation Loc, | ||||||||
| 10458 | QualType* CompLHSTy) { | ||||||||
| 10459 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
| 10460 | |||||||||
| 10461 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 10462 | RHS.get()->getType()->isVectorType()) { | ||||||||
| 10463 | QualType compType = CheckVectorOperands( | ||||||||
| 10464 | LHS, RHS, Loc, CompLHSTy, | ||||||||
| 10465 | /*AllowBothBool*/getLangOpts().AltiVec, | ||||||||
| 10466 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
| 10467 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
| 10468 | return compType; | ||||||||
| 10469 | } | ||||||||
| 10470 | |||||||||
| 10471 | if (LHS.get()->getType()->isConstantMatrixType() || | ||||||||
| 10472 | RHS.get()->getType()->isConstantMatrixType()) { | ||||||||
| 10473 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); | ||||||||
| 10474 | } | ||||||||
| 10475 | |||||||||
| 10476 | QualType compType = UsualArithmeticConversions( | ||||||||
| 10477 | LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); | ||||||||
| 10478 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 10479 | return QualType(); | ||||||||
| 10480 | |||||||||
| 10481 | // Enforce type constraints: C99 6.5.6p3. | ||||||||
| 10482 | |||||||||
| 10483 | // Handle the common case first (both operands are arithmetic). | ||||||||
| 10484 | if (!compType.isNull() && compType->isArithmeticType()) { | ||||||||
| 10485 | if (CompLHSTy) *CompLHSTy = compType; | ||||||||
| 10486 | return compType; | ||||||||
| 10487 | } | ||||||||
| 10488 | |||||||||
| 10489 | // Either ptr - int or ptr - ptr. | ||||||||
| 10490 | if (LHS.get()->getType()->isAnyPointerType()) { | ||||||||
| 10491 | QualType lpointee = LHS.get()->getType()->getPointeeType(); | ||||||||
| 10492 | |||||||||
| 10493 | // Diagnose bad cases where we step over interface counts. | ||||||||
| 10494 | if (LHS.get()->getType()->isObjCObjectPointerType() && | ||||||||
| 10495 | checkArithmeticOnObjCPointer(*this, Loc, LHS.get())) | ||||||||
| 10496 | return QualType(); | ||||||||
| 10497 | |||||||||
| 10498 | // The result type of a pointer-int computation is the pointer type. | ||||||||
| 10499 | if (RHS.get()->getType()->isIntegerType()) { | ||||||||
| 10500 | // Subtracting from a null pointer should produce a warning. | ||||||||
| 10501 | // The last argument to the diagnose call says this doesn't match the | ||||||||
| 10502 | // GNU int-to-pointer idiom. | ||||||||
| 10503 | if (LHS.get()->IgnoreParenCasts()->isNullPointerConstant(Context, | ||||||||
| 10504 | Expr::NPC_ValueDependentIsNotNull)) { | ||||||||
| 10505 | // In C++ adding zero to a null pointer is defined. | ||||||||
| 10506 | Expr::EvalResult KnownVal; | ||||||||
| 10507 | if (!getLangOpts().CPlusPlus || | ||||||||
| 10508 | (!RHS.get()->isValueDependent() && | ||||||||
| 10509 | (!RHS.get()->EvaluateAsInt(KnownVal, Context) || | ||||||||
| 10510 | KnownVal.Val.getInt() != 0))) { | ||||||||
| 10511 | diagnoseArithmeticOnNullPointer(*this, Loc, LHS.get(), false); | ||||||||
| 10512 | } | ||||||||
| 10513 | } | ||||||||
| 10514 | |||||||||
| 10515 | if (!checkArithmeticOpPointerOperand(*this, Loc, LHS.get())) | ||||||||
| 10516 | return QualType(); | ||||||||
| 10517 | |||||||||
| 10518 | // Check array bounds for pointer arithemtic | ||||||||
| 10519 | CheckArrayAccess(LHS.get(), RHS.get(), /*ArraySubscriptExpr*/nullptr, | ||||||||
| 10520 | /*AllowOnePastEnd*/true, /*IndexNegated*/true); | ||||||||
| 10521 | |||||||||
| 10522 | if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); | ||||||||
| 10523 | return LHS.get()->getType(); | ||||||||
| 10524 | } | ||||||||
| 10525 | |||||||||
| 10526 | // Handle pointer-pointer subtractions. | ||||||||
| 10527 | if (const PointerType *RHSPTy | ||||||||
| 10528 | = RHS.get()->getType()->getAs<PointerType>()) { | ||||||||
| 10529 | QualType rpointee = RHSPTy->getPointeeType(); | ||||||||
| 10530 | |||||||||
| 10531 | if (getLangOpts().CPlusPlus) { | ||||||||
| 10532 | // Pointee types must be the same: C++ [expr.add] | ||||||||
| 10533 | if (!Context.hasSameUnqualifiedType(lpointee, rpointee)) { | ||||||||
| 10534 | diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); | ||||||||
| 10535 | } | ||||||||
| 10536 | } else { | ||||||||
| 10537 | // Pointee types must be compatible C99 6.5.6p3 | ||||||||
| 10538 | if (!Context.typesAreCompatible( | ||||||||
| 10539 | Context.getCanonicalType(lpointee).getUnqualifiedType(), | ||||||||
| 10540 | Context.getCanonicalType(rpointee).getUnqualifiedType())) { | ||||||||
| 10541 | diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); | ||||||||
| 10542 | return QualType(); | ||||||||
| 10543 | } | ||||||||
| 10544 | } | ||||||||
| 10545 | |||||||||
| 10546 | if (!checkArithmeticBinOpPointerOperands(*this, Loc, | ||||||||
| 10547 | LHS.get(), RHS.get())) | ||||||||
| 10548 | return QualType(); | ||||||||
| 10549 | |||||||||
| 10550 | // FIXME: Add warnings for nullptr - ptr. | ||||||||
| 10551 | |||||||||
| 10552 | // The pointee type may have zero size. As an extension, a structure or | ||||||||
| 10553 | // union may have zero size or an array may have zero length. In this | ||||||||
| 10554 | // case subtraction does not make sense. | ||||||||
| 10555 | if (!rpointee->isVoidType() && !rpointee->isFunctionType()) { | ||||||||
| 10556 | CharUnits ElementSize = Context.getTypeSizeInChars(rpointee); | ||||||||
| 10557 | if (ElementSize.isZero()) { | ||||||||
| 10558 | Diag(Loc,diag::warn_sub_ptr_zero_size_types) | ||||||||
| 10559 | << rpointee.getUnqualifiedType() | ||||||||
| 10560 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10561 | } | ||||||||
| 10562 | } | ||||||||
| 10563 | |||||||||
| 10564 | if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); | ||||||||
| 10565 | return Context.getPointerDiffType(); | ||||||||
| 10566 | } | ||||||||
| 10567 | } | ||||||||
| 10568 | |||||||||
| 10569 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10570 | } | ||||||||
| 10571 | |||||||||
| 10572 | static bool isScopedEnumerationType(QualType T) { | ||||||||
| 10573 | if (const EnumType *ET = T->getAs<EnumType>()) | ||||||||
| 10574 | return ET->getDecl()->isScoped(); | ||||||||
| 10575 | return false; | ||||||||
| 10576 | } | ||||||||
| 10577 | |||||||||
| 10578 | static void DiagnoseBadShiftValues(Sema& S, ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10579 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||||||
| 10580 | QualType LHSType) { | ||||||||
| 10581 | // OpenCL 6.3j: shift values are effectively % word size of LHS (more defined), | ||||||||
| 10582 | // so skip remaining warnings as we don't want to modify values within Sema. | ||||||||
| 10583 | if (S.getLangOpts().OpenCL) | ||||||||
| 10584 | return; | ||||||||
| 10585 | |||||||||
| 10586 | // Check right/shifter operand | ||||||||
| 10587 | Expr::EvalResult RHSResult; | ||||||||
| 10588 | if (RHS.get()->isValueDependent() || | ||||||||
| 10589 | !RHS.get()->EvaluateAsInt(RHSResult, S.Context)) | ||||||||
| 10590 | return; | ||||||||
| 10591 | llvm::APSInt Right = RHSResult.Val.getInt(); | ||||||||
| 10592 | |||||||||
| 10593 | if (Right.isNegative()) { | ||||||||
| 10594 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||||||
| 10595 | S.PDiag(diag::warn_shift_negative) | ||||||||
| 10596 | << RHS.get()->getSourceRange()); | ||||||||
| 10597 | return; | ||||||||
| 10598 | } | ||||||||
| 10599 | |||||||||
| 10600 | QualType LHSExprType = LHS.get()->getType(); | ||||||||
| 10601 | uint64_t LeftSize = LHSExprType->isExtIntType() | ||||||||
| 10602 | ? S.Context.getIntWidth(LHSExprType) | ||||||||
| 10603 | : S.Context.getTypeSize(LHSExprType); | ||||||||
| 10604 | llvm::APInt LeftBits(Right.getBitWidth(), LeftSize); | ||||||||
| 10605 | if (Right.uge(LeftBits)) { | ||||||||
| 10606 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||||||
| 10607 | S.PDiag(diag::warn_shift_gt_typewidth) | ||||||||
| 10608 | << RHS.get()->getSourceRange()); | ||||||||
| 10609 | return; | ||||||||
| 10610 | } | ||||||||
| 10611 | |||||||||
| 10612 | if (Opc != BO_Shl) | ||||||||
| 10613 | return; | ||||||||
| 10614 | |||||||||
| 10615 | // When left shifting an ICE which is signed, we can check for overflow which | ||||||||
| 10616 | // according to C++ standards prior to C++2a has undefined behavior | ||||||||
| 10617 | // ([expr.shift] 5.8/2). Unsigned integers have defined behavior modulo one | ||||||||
| 10618 | // more than the maximum value representable in the result type, so never | ||||||||
| 10619 | // warn for those. (FIXME: Unsigned left-shift overflow in a constant | ||||||||
| 10620 | // expression is still probably a bug.) | ||||||||
| 10621 | Expr::EvalResult LHSResult; | ||||||||
| 10622 | if (LHS.get()->isValueDependent() || | ||||||||
| 10623 | LHSType->hasUnsignedIntegerRepresentation() || | ||||||||
| 10624 | !LHS.get()->EvaluateAsInt(LHSResult, S.Context)) | ||||||||
| 10625 | return; | ||||||||
| 10626 | llvm::APSInt Left = LHSResult.Val.getInt(); | ||||||||
| 10627 | |||||||||
| 10628 | // If LHS does not have a signed type and non-negative value | ||||||||
| 10629 | // then, the behavior is undefined before C++2a. Warn about it. | ||||||||
| 10630 | if (Left.isNegative() && !S.getLangOpts().isSignedOverflowDefined() && | ||||||||
| 10631 | !S.getLangOpts().CPlusPlus20) { | ||||||||
| 10632 | S.DiagRuntimeBehavior(Loc, LHS.get(), | ||||||||
| 10633 | S.PDiag(diag::warn_shift_lhs_negative) | ||||||||
| 10634 | << LHS.get()->getSourceRange()); | ||||||||
| 10635 | return; | ||||||||
| 10636 | } | ||||||||
| 10637 | |||||||||
| 10638 | llvm::APInt ResultBits = | ||||||||
| 10639 | static_cast<llvm::APInt&>(Right) + Left.getMinSignedBits(); | ||||||||
| 10640 | if (LeftBits.uge(ResultBits)) | ||||||||
| 10641 | return; | ||||||||
| 10642 | llvm::APSInt Result = Left.extend(ResultBits.getLimitedValue()); | ||||||||
| 10643 | Result = Result.shl(Right); | ||||||||
| 10644 | |||||||||
| 10645 | // Print the bit representation of the signed integer as an unsigned | ||||||||
| 10646 | // hexadecimal number. | ||||||||
| 10647 | SmallString<40> HexResult; | ||||||||
| 10648 | Result.toString(HexResult, 16, /*Signed =*/false, /*Literal =*/true); | ||||||||
| 10649 | |||||||||
| 10650 | // If we are only missing a sign bit, this is less likely to result in actual | ||||||||
| 10651 | // bugs -- if the result is cast back to an unsigned type, it will have the | ||||||||
| 10652 | // expected value. Thus we place this behind a different warning that can be | ||||||||
| 10653 | // turned off separately if needed. | ||||||||
| 10654 | if (LeftBits == ResultBits - 1) { | ||||||||
| 10655 | S.Diag(Loc, diag::warn_shift_result_sets_sign_bit) | ||||||||
| 10656 | << HexResult << LHSType | ||||||||
| 10657 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10658 | return; | ||||||||
| 10659 | } | ||||||||
| 10660 | |||||||||
| 10661 | S.Diag(Loc, diag::warn_shift_result_gt_typewidth) | ||||||||
| 10662 | << HexResult.str() << Result.getMinSignedBits() << LHSType | ||||||||
| 10663 | << Left.getBitWidth() << LHS.get()->getSourceRange() | ||||||||
| 10664 | << RHS.get()->getSourceRange(); | ||||||||
| 10665 | } | ||||||||
| 10666 | |||||||||
| 10667 | /// Return the resulting type when a vector is shifted | ||||||||
| 10668 | /// by a scalar or vector shift amount. | ||||||||
| 10669 | static QualType checkVectorShift(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10670 | SourceLocation Loc, bool IsCompAssign) { | ||||||||
| 10671 | // OpenCL v1.1 s6.3.j says RHS can be a vector only if LHS is a vector. | ||||||||
| 10672 | if ((S.LangOpts.OpenCL || S.LangOpts.ZVector) && | ||||||||
| 10673 | !LHS.get()->getType()->isVectorType()) { | ||||||||
| 10674 | S.Diag(Loc, diag::err_shift_rhs_only_vector) | ||||||||
| 10675 | << RHS.get()->getType() << LHS.get()->getType() | ||||||||
| 10676 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10677 | return QualType(); | ||||||||
| 10678 | } | ||||||||
| 10679 | |||||||||
| 10680 | if (!IsCompAssign) { | ||||||||
| 10681 | LHS = S.UsualUnaryConversions(LHS.get()); | ||||||||
| 10682 | if (LHS.isInvalid()) return QualType(); | ||||||||
| 10683 | } | ||||||||
| 10684 | |||||||||
| 10685 | RHS = S.UsualUnaryConversions(RHS.get()); | ||||||||
| 10686 | if (RHS.isInvalid()) return QualType(); | ||||||||
| 10687 | |||||||||
| 10688 | QualType LHSType = LHS.get()->getType(); | ||||||||
| 10689 | // Note that LHS might be a scalar because the routine calls not only in | ||||||||
| 10690 | // OpenCL case. | ||||||||
| 10691 | const VectorType *LHSVecTy = LHSType->getAs<VectorType>(); | ||||||||
| 10692 | QualType LHSEleType = LHSVecTy ? LHSVecTy->getElementType() : LHSType; | ||||||||
| 10693 | |||||||||
| 10694 | // Note that RHS might not be a vector. | ||||||||
| 10695 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 10696 | const VectorType *RHSVecTy = RHSType->getAs<VectorType>(); | ||||||||
| 10697 | QualType RHSEleType = RHSVecTy ? RHSVecTy->getElementType() : RHSType; | ||||||||
| 10698 | |||||||||
| 10699 | // The operands need to be integers. | ||||||||
| 10700 | if (!LHSEleType->isIntegerType()) { | ||||||||
| 10701 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||||||
| 10702 | << LHS.get()->getType() << LHS.get()->getSourceRange(); | ||||||||
| 10703 | return QualType(); | ||||||||
| 10704 | } | ||||||||
| 10705 | |||||||||
| 10706 | if (!RHSEleType->isIntegerType()) { | ||||||||
| 10707 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||||||
| 10708 | << RHS.get()->getType() << RHS.get()->getSourceRange(); | ||||||||
| 10709 | return QualType(); | ||||||||
| 10710 | } | ||||||||
| 10711 | |||||||||
| 10712 | if (!LHSVecTy) { | ||||||||
| 10713 | assert(RHSVecTy)((RHSVecTy) ? static_cast<void> (0) : __assert_fail ("RHSVecTy" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10713, __PRETTY_FUNCTION__)); | ||||||||
| 10714 | if (IsCompAssign) | ||||||||
| 10715 | return RHSType; | ||||||||
| 10716 | if (LHSEleType != RHSEleType) { | ||||||||
| 10717 | LHS = S.ImpCastExprToType(LHS.get(),RHSEleType, CK_IntegralCast); | ||||||||
| 10718 | LHSEleType = RHSEleType; | ||||||||
| 10719 | } | ||||||||
| 10720 | QualType VecTy = | ||||||||
| 10721 | S.Context.getExtVectorType(LHSEleType, RHSVecTy->getNumElements()); | ||||||||
| 10722 | LHS = S.ImpCastExprToType(LHS.get(), VecTy, CK_VectorSplat); | ||||||||
| 10723 | LHSType = VecTy; | ||||||||
| 10724 | } else if (RHSVecTy) { | ||||||||
| 10725 | // OpenCL v1.1 s6.3.j says that for vector types, the operators | ||||||||
| 10726 | // are applied component-wise. So if RHS is a vector, then ensure | ||||||||
| 10727 | // that the number of elements is the same as LHS... | ||||||||
| 10728 | if (RHSVecTy->getNumElements() != LHSVecTy->getNumElements()) { | ||||||||
| 10729 | S.Diag(Loc, diag::err_typecheck_vector_lengths_not_equal) | ||||||||
| 10730 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
| 10731 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10732 | return QualType(); | ||||||||
| 10733 | } | ||||||||
| 10734 | if (!S.LangOpts.OpenCL && !S.LangOpts.ZVector) { | ||||||||
| 10735 | const BuiltinType *LHSBT = LHSEleType->getAs<clang::BuiltinType>(); | ||||||||
| 10736 | const BuiltinType *RHSBT = RHSEleType->getAs<clang::BuiltinType>(); | ||||||||
| 10737 | if (LHSBT != RHSBT && | ||||||||
| 10738 | S.Context.getTypeSize(LHSBT) != S.Context.getTypeSize(RHSBT)) { | ||||||||
| 10739 | S.Diag(Loc, diag::warn_typecheck_vector_element_sizes_not_equal) | ||||||||
| 10740 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
| 10741 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10742 | } | ||||||||
| 10743 | } | ||||||||
| 10744 | } else { | ||||||||
| 10745 | // ...else expand RHS to match the number of elements in LHS. | ||||||||
| 10746 | QualType VecTy = | ||||||||
| 10747 | S.Context.getExtVectorType(RHSEleType, LHSVecTy->getNumElements()); | ||||||||
| 10748 | RHS = S.ImpCastExprToType(RHS.get(), VecTy, CK_VectorSplat); | ||||||||
| 10749 | } | ||||||||
| 10750 | |||||||||
| 10751 | return LHSType; | ||||||||
| 10752 | } | ||||||||
| 10753 | |||||||||
| 10754 | // C99 6.5.7 | ||||||||
| 10755 | QualType Sema::CheckShiftOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10756 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||||||
| 10757 | bool IsCompAssign) { | ||||||||
| 10758 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
| 10759 | |||||||||
| 10760 | // Vector shifts promote their scalar inputs to vector type. | ||||||||
| 10761 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 10762 | RHS.get()->getType()->isVectorType()) { | ||||||||
| 10763 | if (LangOpts.ZVector) { | ||||||||
| 10764 | // The shift operators for the z vector extensions work basically | ||||||||
| 10765 | // like general shifts, except that neither the LHS nor the RHS is | ||||||||
| 10766 | // allowed to be a "vector bool". | ||||||||
| 10767 | if (auto LHSVecType = LHS.get()->getType()->getAs<VectorType>()) | ||||||||
| 10768 | if (LHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||||||
| 10769 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10770 | if (auto RHSVecType = RHS.get()->getType()->getAs<VectorType>()) | ||||||||
| 10771 | if (RHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||||||
| 10772 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10773 | } | ||||||||
| 10774 | return checkVectorShift(*this, LHS, RHS, Loc, IsCompAssign); | ||||||||
| 10775 | } | ||||||||
| 10776 | |||||||||
| 10777 | // Shifts don't perform usual arithmetic conversions, they just do integer | ||||||||
| 10778 | // promotions on each operand. C99 6.5.7p3 | ||||||||
| 10779 | |||||||||
| 10780 | // For the LHS, do usual unary conversions, but then reset them away | ||||||||
| 10781 | // if this is a compound assignment. | ||||||||
| 10782 | ExprResult OldLHS = LHS; | ||||||||
| 10783 | LHS = UsualUnaryConversions(LHS.get()); | ||||||||
| 10784 | if (LHS.isInvalid()) | ||||||||
| 10785 | return QualType(); | ||||||||
| 10786 | QualType LHSType = LHS.get()->getType(); | ||||||||
| 10787 | if (IsCompAssign) LHS = OldLHS; | ||||||||
| 10788 | |||||||||
| 10789 | // The RHS is simpler. | ||||||||
| 10790 | RHS = UsualUnaryConversions(RHS.get()); | ||||||||
| 10791 | if (RHS.isInvalid()) | ||||||||
| 10792 | return QualType(); | ||||||||
| 10793 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 10794 | |||||||||
| 10795 | // C99 6.5.7p2: Each of the operands shall have integer type. | ||||||||
| 10796 | if (!LHSType->hasIntegerRepresentation() || | ||||||||
| 10797 | !RHSType->hasIntegerRepresentation()) | ||||||||
| 10798 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10799 | |||||||||
| 10800 | // C++0x: Don't allow scoped enums. FIXME: Use something better than | ||||||||
| 10801 | // hasIntegerRepresentation() above instead of this. | ||||||||
| 10802 | if (isScopedEnumerationType(LHSType) || | ||||||||
| 10803 | isScopedEnumerationType(RHSType)) { | ||||||||
| 10804 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10805 | } | ||||||||
| 10806 | // Sanity-check shift operands | ||||||||
| 10807 | DiagnoseBadShiftValues(*this, LHS, RHS, Loc, Opc, LHSType); | ||||||||
| 10808 | |||||||||
| 10809 | // "The type of the result is that of the promoted left operand." | ||||||||
| 10810 | return LHSType; | ||||||||
| 10811 | } | ||||||||
| 10812 | |||||||||
| 10813 | /// Diagnose bad pointer comparisons. | ||||||||
| 10814 | static void diagnoseDistinctPointerComparison(Sema &S, SourceLocation Loc, | ||||||||
| 10815 | ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10816 | bool IsError) { | ||||||||
| 10817 | S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_distinct_pointers | ||||||||
| 10818 | : diag::ext_typecheck_comparison_of_distinct_pointers) | ||||||||
| 10819 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
| 10820 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10821 | } | ||||||||
| 10822 | |||||||||
| 10823 | /// Returns false if the pointers are converted to a composite type, | ||||||||
| 10824 | /// true otherwise. | ||||||||
| 10825 | static bool convertPointersToCompositeType(Sema &S, SourceLocation Loc, | ||||||||
| 10826 | ExprResult &LHS, ExprResult &RHS) { | ||||||||
| 10827 | // C++ [expr.rel]p2: | ||||||||
| 10828 | // [...] Pointer conversions (4.10) and qualification | ||||||||
| 10829 | // conversions (4.4) are performed on pointer operands (or on | ||||||||
| 10830 | // a pointer operand and a null pointer constant) to bring | ||||||||
| 10831 | // them to their composite pointer type. [...] | ||||||||
| 10832 | // | ||||||||
| 10833 | // C++ [expr.eq]p1 uses the same notion for (in)equality | ||||||||
| 10834 | // comparisons of pointers. | ||||||||
| 10835 | |||||||||
| 10836 | QualType LHSType = LHS.get()->getType(); | ||||||||
| 10837 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 10838 | assert(LHSType->isPointerType() || RHSType->isPointerType() ||((LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType ()) ? static_cast<void> (0) : __assert_fail ("LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10839, __PRETTY_FUNCTION__)) | ||||||||
| 10839 | LHSType->isMemberPointerType() || RHSType->isMemberPointerType())((LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType ()) ? static_cast<void> (0) : __assert_fail ("LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10839, __PRETTY_FUNCTION__)); | ||||||||
| 10840 | |||||||||
| 10841 | QualType T = S.FindCompositePointerType(Loc, LHS, RHS); | ||||||||
| 10842 | if (T.isNull()) { | ||||||||
| 10843 | if ((LHSType->isAnyPointerType() || LHSType->isMemberPointerType()) && | ||||||||
| 10844 | (RHSType->isAnyPointerType() || RHSType->isMemberPointerType())) | ||||||||
| 10845 | diagnoseDistinctPointerComparison(S, Loc, LHS, RHS, /*isError*/true); | ||||||||
| 10846 | else | ||||||||
| 10847 | S.InvalidOperands(Loc, LHS, RHS); | ||||||||
| 10848 | return true; | ||||||||
| 10849 | } | ||||||||
| 10850 | |||||||||
| 10851 | return false; | ||||||||
| 10852 | } | ||||||||
| 10853 | |||||||||
| 10854 | static void diagnoseFunctionPointerToVoidComparison(Sema &S, SourceLocation Loc, | ||||||||
| 10855 | ExprResult &LHS, | ||||||||
| 10856 | ExprResult &RHS, | ||||||||
| 10857 | bool IsError) { | ||||||||
| 10858 | S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_fptr_to_void | ||||||||
| 10859 | : diag::ext_typecheck_comparison_of_fptr_to_void) | ||||||||
| 10860 | << LHS.get()->getType() << RHS.get()->getType() | ||||||||
| 10861 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 10862 | } | ||||||||
| 10863 | |||||||||
| 10864 | static bool isObjCObjectLiteral(ExprResult &E) { | ||||||||
| 10865 | switch (E.get()->IgnoreParenImpCasts()->getStmtClass()) { | ||||||||
| 10866 | case Stmt::ObjCArrayLiteralClass: | ||||||||
| 10867 | case Stmt::ObjCDictionaryLiteralClass: | ||||||||
| 10868 | case Stmt::ObjCStringLiteralClass: | ||||||||
| 10869 | case Stmt::ObjCBoxedExprClass: | ||||||||
| 10870 | return true; | ||||||||
| 10871 | default: | ||||||||
| 10872 | // Note that ObjCBoolLiteral is NOT an object literal! | ||||||||
| 10873 | return false; | ||||||||
| 10874 | } | ||||||||
| 10875 | } | ||||||||
| 10876 | |||||||||
| 10877 | static bool hasIsEqualMethod(Sema &S, const Expr *LHS, const Expr *RHS) { | ||||||||
| 10878 | const ObjCObjectPointerType *Type = | ||||||||
| 10879 | LHS->getType()->getAs<ObjCObjectPointerType>(); | ||||||||
| 10880 | |||||||||
| 10881 | // If this is not actually an Objective-C object, bail out. | ||||||||
| 10882 | if (!Type) | ||||||||
| 10883 | return false; | ||||||||
| 10884 | |||||||||
| 10885 | // Get the LHS object's interface type. | ||||||||
| 10886 | QualType InterfaceType = Type->getPointeeType(); | ||||||||
| 10887 | |||||||||
| 10888 | // If the RHS isn't an Objective-C object, bail out. | ||||||||
| 10889 | if (!RHS->getType()->isObjCObjectPointerType()) | ||||||||
| 10890 | return false; | ||||||||
| 10891 | |||||||||
| 10892 | // Try to find the -isEqual: method. | ||||||||
| 10893 | Selector IsEqualSel = S.NSAPIObj->getIsEqualSelector(); | ||||||||
| 10894 | ObjCMethodDecl *Method = S.LookupMethodInObjectType(IsEqualSel, | ||||||||
| 10895 | InterfaceType, | ||||||||
| 10896 | /*IsInstance=*/true); | ||||||||
| 10897 | if (!Method) { | ||||||||
| 10898 | if (Type->isObjCIdType()) { | ||||||||
| 10899 | // For 'id', just check the global pool. | ||||||||
| 10900 | Method = S.LookupInstanceMethodInGlobalPool(IsEqualSel, SourceRange(), | ||||||||
| 10901 | /*receiverId=*/true); | ||||||||
| 10902 | } else { | ||||||||
| 10903 | // Check protocols. | ||||||||
| 10904 | Method = S.LookupMethodInQualifiedType(IsEqualSel, Type, | ||||||||
| 10905 | /*IsInstance=*/true); | ||||||||
| 10906 | } | ||||||||
| 10907 | } | ||||||||
| 10908 | |||||||||
| 10909 | if (!Method) | ||||||||
| 10910 | return false; | ||||||||
| 10911 | |||||||||
| 10912 | QualType T = Method->parameters()[0]->getType(); | ||||||||
| 10913 | if (!T->isObjCObjectPointerType()) | ||||||||
| 10914 | return false; | ||||||||
| 10915 | |||||||||
| 10916 | QualType R = Method->getReturnType(); | ||||||||
| 10917 | if (!R->isScalarType()) | ||||||||
| 10918 | return false; | ||||||||
| 10919 | |||||||||
| 10920 | return true; | ||||||||
| 10921 | } | ||||||||
| 10922 | |||||||||
| 10923 | Sema::ObjCLiteralKind Sema::CheckLiteralKind(Expr *FromE) { | ||||||||
| 10924 | FromE = FromE->IgnoreParenImpCasts(); | ||||||||
| 10925 | switch (FromE->getStmtClass()) { | ||||||||
| 10926 | default: | ||||||||
| 10927 | break; | ||||||||
| 10928 | case Stmt::ObjCStringLiteralClass: | ||||||||
| 10929 | // "string literal" | ||||||||
| 10930 | return LK_String; | ||||||||
| 10931 | case Stmt::ObjCArrayLiteralClass: | ||||||||
| 10932 | // "array literal" | ||||||||
| 10933 | return LK_Array; | ||||||||
| 10934 | case Stmt::ObjCDictionaryLiteralClass: | ||||||||
| 10935 | // "dictionary literal" | ||||||||
| 10936 | return LK_Dictionary; | ||||||||
| 10937 | case Stmt::BlockExprClass: | ||||||||
| 10938 | return LK_Block; | ||||||||
| 10939 | case Stmt::ObjCBoxedExprClass: { | ||||||||
| 10940 | Expr *Inner = cast<ObjCBoxedExpr>(FromE)->getSubExpr()->IgnoreParens(); | ||||||||
| 10941 | switch (Inner->getStmtClass()) { | ||||||||
| 10942 | case Stmt::IntegerLiteralClass: | ||||||||
| 10943 | case Stmt::FloatingLiteralClass: | ||||||||
| 10944 | case Stmt::CharacterLiteralClass: | ||||||||
| 10945 | case Stmt::ObjCBoolLiteralExprClass: | ||||||||
| 10946 | case Stmt::CXXBoolLiteralExprClass: | ||||||||
| 10947 | // "numeric literal" | ||||||||
| 10948 | return LK_Numeric; | ||||||||
| 10949 | case Stmt::ImplicitCastExprClass: { | ||||||||
| 10950 | CastKind CK = cast<CastExpr>(Inner)->getCastKind(); | ||||||||
| 10951 | // Boolean literals can be represented by implicit casts. | ||||||||
| 10952 | if (CK == CK_IntegralToBoolean || CK == CK_IntegralCast) | ||||||||
| 10953 | return LK_Numeric; | ||||||||
| 10954 | break; | ||||||||
| 10955 | } | ||||||||
| 10956 | default: | ||||||||
| 10957 | break; | ||||||||
| 10958 | } | ||||||||
| 10959 | return LK_Boxed; | ||||||||
| 10960 | } | ||||||||
| 10961 | } | ||||||||
| 10962 | return LK_None; | ||||||||
| 10963 | } | ||||||||
| 10964 | |||||||||
| 10965 | static void diagnoseObjCLiteralComparison(Sema &S, SourceLocation Loc, | ||||||||
| 10966 | ExprResult &LHS, ExprResult &RHS, | ||||||||
| 10967 | BinaryOperator::Opcode Opc){ | ||||||||
| 10968 | Expr *Literal; | ||||||||
| 10969 | Expr *Other; | ||||||||
| 10970 | if (isObjCObjectLiteral(LHS)) { | ||||||||
| 10971 | Literal = LHS.get(); | ||||||||
| 10972 | Other = RHS.get(); | ||||||||
| 10973 | } else { | ||||||||
| 10974 | Literal = RHS.get(); | ||||||||
| 10975 | Other = LHS.get(); | ||||||||
| 10976 | } | ||||||||
| 10977 | |||||||||
| 10978 | // Don't warn on comparisons against nil. | ||||||||
| 10979 | Other = Other->IgnoreParenCasts(); | ||||||||
| 10980 | if (Other->isNullPointerConstant(S.getASTContext(), | ||||||||
| 10981 | Expr::NPC_ValueDependentIsNotNull)) | ||||||||
| 10982 | return; | ||||||||
| 10983 | |||||||||
| 10984 | // This should be kept in sync with warn_objc_literal_comparison. | ||||||||
| 10985 | // LK_String should always be after the other literals, since it has its own | ||||||||
| 10986 | // warning flag. | ||||||||
| 10987 | Sema::ObjCLiteralKind LiteralKind = S.CheckLiteralKind(Literal); | ||||||||
| 10988 | assert(LiteralKind != Sema::LK_Block)((LiteralKind != Sema::LK_Block) ? static_cast<void> (0 ) : __assert_fail ("LiteralKind != Sema::LK_Block", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10988, __PRETTY_FUNCTION__)); | ||||||||
| 10989 | if (LiteralKind == Sema::LK_None) { | ||||||||
| 10990 | llvm_unreachable("Unknown Objective-C object literal kind")::llvm::llvm_unreachable_internal("Unknown Objective-C object literal kind" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 10990); | ||||||||
| 10991 | } | ||||||||
| 10992 | |||||||||
| 10993 | if (LiteralKind == Sema::LK_String) | ||||||||
| 10994 | S.Diag(Loc, diag::warn_objc_string_literal_comparison) | ||||||||
| 10995 | << Literal->getSourceRange(); | ||||||||
| 10996 | else | ||||||||
| 10997 | S.Diag(Loc, diag::warn_objc_literal_comparison) | ||||||||
| 10998 | << LiteralKind << Literal->getSourceRange(); | ||||||||
| 10999 | |||||||||
| 11000 | if (BinaryOperator::isEqualityOp(Opc) && | ||||||||
| 11001 | hasIsEqualMethod(S, LHS.get(), RHS.get())) { | ||||||||
| 11002 | SourceLocation Start = LHS.get()->getBeginLoc(); | ||||||||
| 11003 | SourceLocation End = S.getLocForEndOfToken(RHS.get()->getEndLoc()); | ||||||||
| 11004 | CharSourceRange OpRange = | ||||||||
| 11005 | CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); | ||||||||
| 11006 | |||||||||
| 11007 | S.Diag(Loc, diag::note_objc_literal_comparison_isequal) | ||||||||
| 11008 | << FixItHint::CreateInsertion(Start, Opc == BO_EQ ? "[" : "![") | ||||||||
| 11009 | << FixItHint::CreateReplacement(OpRange, " isEqual:") | ||||||||
| 11010 | << FixItHint::CreateInsertion(End, "]"); | ||||||||
| 11011 | } | ||||||||
| 11012 | } | ||||||||
| 11013 | |||||||||
| 11014 | /// Warns on !x < y, !x & y where !(x < y), !(x & y) was probably intended. | ||||||||
| 11015 | static void diagnoseLogicalNotOnLHSofCheck(Sema &S, ExprResult &LHS, | ||||||||
| 11016 | ExprResult &RHS, SourceLocation Loc, | ||||||||
| 11017 | BinaryOperatorKind Opc) { | ||||||||
| 11018 | // Check that left hand side is !something. | ||||||||
| 11019 | UnaryOperator *UO = dyn_cast<UnaryOperator>(LHS.get()->IgnoreImpCasts()); | ||||||||
| 11020 | if (!UO || UO->getOpcode() != UO_LNot) return; | ||||||||
| 11021 | |||||||||
| 11022 | // Only check if the right hand side is non-bool arithmetic type. | ||||||||
| 11023 | if (RHS.get()->isKnownToHaveBooleanValue()) return; | ||||||||
| 11024 | |||||||||
| 11025 | // Make sure that the something in !something is not bool. | ||||||||
| 11026 | Expr *SubExpr = UO->getSubExpr()->IgnoreImpCasts(); | ||||||||
| 11027 | if (SubExpr->isKnownToHaveBooleanValue()) return; | ||||||||
| 11028 | |||||||||
| 11029 | // Emit warning. | ||||||||
| 11030 | bool IsBitwiseOp = Opc == BO_And || Opc == BO_Or || Opc == BO_Xor; | ||||||||
| 11031 | S.Diag(UO->getOperatorLoc(), diag::warn_logical_not_on_lhs_of_check) | ||||||||
| 11032 | << Loc << IsBitwiseOp; | ||||||||
| 11033 | |||||||||
| 11034 | // First note suggest !(x < y) | ||||||||
| 11035 | SourceLocation FirstOpen = SubExpr->getBeginLoc(); | ||||||||
| 11036 | SourceLocation FirstClose = RHS.get()->getEndLoc(); | ||||||||
| 11037 | FirstClose = S.getLocForEndOfToken(FirstClose); | ||||||||
| 11038 | if (FirstClose.isInvalid()) | ||||||||
| 11039 | FirstOpen = SourceLocation(); | ||||||||
| 11040 | S.Diag(UO->getOperatorLoc(), diag::note_logical_not_fix) | ||||||||
| 11041 | << IsBitwiseOp | ||||||||
| 11042 | << FixItHint::CreateInsertion(FirstOpen, "(") | ||||||||
| 11043 | << FixItHint::CreateInsertion(FirstClose, ")"); | ||||||||
| 11044 | |||||||||
| 11045 | // Second note suggests (!x) < y | ||||||||
| 11046 | SourceLocation SecondOpen = LHS.get()->getBeginLoc(); | ||||||||
| 11047 | SourceLocation SecondClose = LHS.get()->getEndLoc(); | ||||||||
| 11048 | SecondClose = S.getLocForEndOfToken(SecondClose); | ||||||||
| 11049 | if (SecondClose.isInvalid()) | ||||||||
| 11050 | SecondOpen = SourceLocation(); | ||||||||
| 11051 | S.Diag(UO->getOperatorLoc(), diag::note_logical_not_silence_with_parens) | ||||||||
| 11052 | << FixItHint::CreateInsertion(SecondOpen, "(") | ||||||||
| 11053 | << FixItHint::CreateInsertion(SecondClose, ")"); | ||||||||
| 11054 | } | ||||||||
| 11055 | |||||||||
| 11056 | // Returns true if E refers to a non-weak array. | ||||||||
| 11057 | static bool checkForArray(const Expr *E) { | ||||||||
| 11058 | const ValueDecl *D = nullptr; | ||||||||
| 11059 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(E)) { | ||||||||
| 11060 | D = DR->getDecl(); | ||||||||
| 11061 | } else if (const MemberExpr *Mem = dyn_cast<MemberExpr>(E)) { | ||||||||
| 11062 | if (Mem->isImplicitAccess()) | ||||||||
| 11063 | D = Mem->getMemberDecl(); | ||||||||
| 11064 | } | ||||||||
| 11065 | if (!D) | ||||||||
| 11066 | return false; | ||||||||
| 11067 | return D->getType()->isArrayType() && !D->isWeak(); | ||||||||
| 11068 | } | ||||||||
| 11069 | |||||||||
| 11070 | /// Diagnose some forms of syntactically-obvious tautological comparison. | ||||||||
| 11071 | static void diagnoseTautologicalComparison(Sema &S, SourceLocation Loc, | ||||||||
| 11072 | Expr *LHS, Expr *RHS, | ||||||||
| 11073 | BinaryOperatorKind Opc) { | ||||||||
| 11074 | Expr *LHSStripped = LHS->IgnoreParenImpCasts(); | ||||||||
| 11075 | Expr *RHSStripped = RHS->IgnoreParenImpCasts(); | ||||||||
| 11076 | |||||||||
| 11077 | QualType LHSType = LHS->getType(); | ||||||||
| 11078 | QualType RHSType = RHS->getType(); | ||||||||
| 11079 | if (LHSType->hasFloatingRepresentation() || | ||||||||
| 11080 | (LHSType->isBlockPointerType() && !BinaryOperator::isEqualityOp(Opc)) || | ||||||||
| 11081 | S.inTemplateInstantiation()) | ||||||||
| 11082 | return; | ||||||||
| 11083 | |||||||||
| 11084 | // Comparisons between two array types are ill-formed for operator<=>, so | ||||||||
| 11085 | // we shouldn't emit any additional warnings about it. | ||||||||
| 11086 | if (Opc == BO_Cmp && LHSType->isArrayType() && RHSType->isArrayType()) | ||||||||
| 11087 | return; | ||||||||
| 11088 | |||||||||
| 11089 | // For non-floating point types, check for self-comparisons of the form | ||||||||
| 11090 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||||||
| 11091 | // often indicate logic errors in the program. | ||||||||
| 11092 | // | ||||||||
| 11093 | // NOTE: Don't warn about comparison expressions resulting from macro | ||||||||
| 11094 | // expansion. Also don't warn about comparisons which are only self | ||||||||
| 11095 | // comparisons within a template instantiation. The warnings should catch | ||||||||
| 11096 | // obvious cases in the definition of the template anyways. The idea is to | ||||||||
| 11097 | // warn when the typed comparison operator will always evaluate to the same | ||||||||
| 11098 | // result. | ||||||||
| 11099 | |||||||||
| 11100 | // Used for indexing into %select in warn_comparison_always | ||||||||
| 11101 | enum { | ||||||||
| 11102 | AlwaysConstant, | ||||||||
| 11103 | AlwaysTrue, | ||||||||
| 11104 | AlwaysFalse, | ||||||||
| 11105 | AlwaysEqual, // std::strong_ordering::equal from operator<=> | ||||||||
| 11106 | }; | ||||||||
| 11107 | |||||||||
| 11108 | // C++2a [depr.array.comp]: | ||||||||
| 11109 | // Equality and relational comparisons ([expr.eq], [expr.rel]) between two | ||||||||
| 11110 | // operands of array type are deprecated. | ||||||||
| 11111 | if (S.getLangOpts().CPlusPlus20 && LHSStripped->getType()->isArrayType() && | ||||||||
| 11112 | RHSStripped->getType()->isArrayType()) { | ||||||||
| 11113 | S.Diag(Loc, diag::warn_depr_array_comparison) | ||||||||
| 11114 | << LHS->getSourceRange() << RHS->getSourceRange() | ||||||||
| 11115 | << LHSStripped->getType() << RHSStripped->getType(); | ||||||||
| 11116 | // Carry on to produce the tautological comparison warning, if this | ||||||||
| 11117 | // expression is potentially-evaluated, we can resolve the array to a | ||||||||
| 11118 | // non-weak declaration, and so on. | ||||||||
| 11119 | } | ||||||||
| 11120 | |||||||||
| 11121 | if (!LHS->getBeginLoc().isMacroID() && !RHS->getBeginLoc().isMacroID()) { | ||||||||
| 11122 | if (Expr::isSameComparisonOperand(LHS, RHS)) { | ||||||||
| 11123 | unsigned Result; | ||||||||
| 11124 | switch (Opc) { | ||||||||
| 11125 | case BO_EQ: | ||||||||
| 11126 | case BO_LE: | ||||||||
| 11127 | case BO_GE: | ||||||||
| 11128 | Result = AlwaysTrue; | ||||||||
| 11129 | break; | ||||||||
| 11130 | case BO_NE: | ||||||||
| 11131 | case BO_LT: | ||||||||
| 11132 | case BO_GT: | ||||||||
| 11133 | Result = AlwaysFalse; | ||||||||
| 11134 | break; | ||||||||
| 11135 | case BO_Cmp: | ||||||||
| 11136 | Result = AlwaysEqual; | ||||||||
| 11137 | break; | ||||||||
| 11138 | default: | ||||||||
| 11139 | Result = AlwaysConstant; | ||||||||
| 11140 | break; | ||||||||
| 11141 | } | ||||||||
| 11142 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||||||
| 11143 | S.PDiag(diag::warn_comparison_always) | ||||||||
| 11144 | << 0 /*self-comparison*/ | ||||||||
| 11145 | << Result); | ||||||||
| 11146 | } else if (checkForArray(LHSStripped) && checkForArray(RHSStripped)) { | ||||||||
| 11147 | // What is it always going to evaluate to? | ||||||||
| 11148 | unsigned Result; | ||||||||
| 11149 | switch (Opc) { | ||||||||
| 11150 | case BO_EQ: // e.g. array1 == array2 | ||||||||
| 11151 | Result = AlwaysFalse; | ||||||||
| 11152 | break; | ||||||||
| 11153 | case BO_NE: // e.g. array1 != array2 | ||||||||
| 11154 | Result = AlwaysTrue; | ||||||||
| 11155 | break; | ||||||||
| 11156 | default: // e.g. array1 <= array2 | ||||||||
| 11157 | // The best we can say is 'a constant' | ||||||||
| 11158 | Result = AlwaysConstant; | ||||||||
| 11159 | break; | ||||||||
| 11160 | } | ||||||||
| 11161 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||||||
| 11162 | S.PDiag(diag::warn_comparison_always) | ||||||||
| 11163 | << 1 /*array comparison*/ | ||||||||
| 11164 | << Result); | ||||||||
| 11165 | } | ||||||||
| 11166 | } | ||||||||
| 11167 | |||||||||
| 11168 | if (isa<CastExpr>(LHSStripped)) | ||||||||
| 11169 | LHSStripped = LHSStripped->IgnoreParenCasts(); | ||||||||
| 11170 | if (isa<CastExpr>(RHSStripped)) | ||||||||
| 11171 | RHSStripped = RHSStripped->IgnoreParenCasts(); | ||||||||
| 11172 | |||||||||
| 11173 | // Warn about comparisons against a string constant (unless the other | ||||||||
| 11174 | // operand is null); the user probably wants string comparison function. | ||||||||
| 11175 | Expr *LiteralString = nullptr; | ||||||||
| 11176 | Expr *LiteralStringStripped = nullptr; | ||||||||
| 11177 | if ((isa<StringLiteral>(LHSStripped) || isa<ObjCEncodeExpr>(LHSStripped)) && | ||||||||
| 11178 | !RHSStripped->isNullPointerConstant(S.Context, | ||||||||
| 11179 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
| 11180 | LiteralString = LHS; | ||||||||
| 11181 | LiteralStringStripped = LHSStripped; | ||||||||
| 11182 | } else if ((isa<StringLiteral>(RHSStripped) || | ||||||||
| 11183 | isa<ObjCEncodeExpr>(RHSStripped)) && | ||||||||
| 11184 | !LHSStripped->isNullPointerConstant(S.Context, | ||||||||
| 11185 | Expr::NPC_ValueDependentIsNull)) { | ||||||||
| 11186 | LiteralString = RHS; | ||||||||
| 11187 | LiteralStringStripped = RHSStripped; | ||||||||
| 11188 | } | ||||||||
| 11189 | |||||||||
| 11190 | if (LiteralString) { | ||||||||
| 11191 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||||||
| 11192 | S.PDiag(diag::warn_stringcompare) | ||||||||
| 11193 | << isa<ObjCEncodeExpr>(LiteralStringStripped) | ||||||||
| 11194 | << LiteralString->getSourceRange()); | ||||||||
| 11195 | } | ||||||||
| 11196 | } | ||||||||
| 11197 | |||||||||
| 11198 | static ImplicitConversionKind castKindToImplicitConversionKind(CastKind CK) { | ||||||||
| 11199 | switch (CK) { | ||||||||
| 11200 | default: { | ||||||||
| 11201 | #ifndef NDEBUG | ||||||||
| 11202 | llvm::errs() << "unhandled cast kind: " << CastExpr::getCastKindName(CK) | ||||||||
| 11203 | << "\n"; | ||||||||
| 11204 | #endif | ||||||||
| 11205 | llvm_unreachable("unhandled cast kind")::llvm::llvm_unreachable_internal("unhandled cast kind", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11205); | ||||||||
| 11206 | } | ||||||||
| 11207 | case CK_UserDefinedConversion: | ||||||||
| 11208 | return ICK_Identity; | ||||||||
| 11209 | case CK_LValueToRValue: | ||||||||
| 11210 | return ICK_Lvalue_To_Rvalue; | ||||||||
| 11211 | case CK_ArrayToPointerDecay: | ||||||||
| 11212 | return ICK_Array_To_Pointer; | ||||||||
| 11213 | case CK_FunctionToPointerDecay: | ||||||||
| 11214 | return ICK_Function_To_Pointer; | ||||||||
| 11215 | case CK_IntegralCast: | ||||||||
| 11216 | return ICK_Integral_Conversion; | ||||||||
| 11217 | case CK_FloatingCast: | ||||||||
| 11218 | return ICK_Floating_Conversion; | ||||||||
| 11219 | case CK_IntegralToFloating: | ||||||||
| 11220 | case CK_FloatingToIntegral: | ||||||||
| 11221 | return ICK_Floating_Integral; | ||||||||
| 11222 | case CK_IntegralComplexCast: | ||||||||
| 11223 | case CK_FloatingComplexCast: | ||||||||
| 11224 | case CK_FloatingComplexToIntegralComplex: | ||||||||
| 11225 | case CK_IntegralComplexToFloatingComplex: | ||||||||
| 11226 | return ICK_Complex_Conversion; | ||||||||
| 11227 | case CK_FloatingComplexToReal: | ||||||||
| 11228 | case CK_FloatingRealToComplex: | ||||||||
| 11229 | case CK_IntegralComplexToReal: | ||||||||
| 11230 | case CK_IntegralRealToComplex: | ||||||||
| 11231 | return ICK_Complex_Real; | ||||||||
| 11232 | } | ||||||||
| 11233 | } | ||||||||
| 11234 | |||||||||
| 11235 | static bool checkThreeWayNarrowingConversion(Sema &S, QualType ToType, Expr *E, | ||||||||
| 11236 | QualType FromType, | ||||||||
| 11237 | SourceLocation Loc) { | ||||||||
| 11238 | // Check for a narrowing implicit conversion. | ||||||||
| 11239 | StandardConversionSequence SCS; | ||||||||
| 11240 | SCS.setAsIdentityConversion(); | ||||||||
| 11241 | SCS.setToType(0, FromType); | ||||||||
| 11242 | SCS.setToType(1, ToType); | ||||||||
| 11243 | if (const auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
| 11244 | SCS.Second = castKindToImplicitConversionKind(ICE->getCastKind()); | ||||||||
| 11245 | |||||||||
| 11246 | APValue PreNarrowingValue; | ||||||||
| 11247 | QualType PreNarrowingType; | ||||||||
| 11248 | switch (SCS.getNarrowingKind(S.Context, E, PreNarrowingValue, | ||||||||
| 11249 | PreNarrowingType, | ||||||||
| 11250 | /*IgnoreFloatToIntegralConversion*/ true)) { | ||||||||
| 11251 | case NK_Dependent_Narrowing: | ||||||||
| 11252 | // Implicit conversion to a narrower type, but the expression is | ||||||||
| 11253 | // value-dependent so we can't tell whether it's actually narrowing. | ||||||||
| 11254 | case NK_Not_Narrowing: | ||||||||
| 11255 | return false; | ||||||||
| 11256 | |||||||||
| 11257 | case NK_Constant_Narrowing: | ||||||||
| 11258 | // Implicit conversion to a narrower type, and the value is not a constant | ||||||||
| 11259 | // expression. | ||||||||
| 11260 | S.Diag(E->getBeginLoc(), diag::err_spaceship_argument_narrowing) | ||||||||
| 11261 | << /*Constant*/ 1 | ||||||||
| 11262 | << PreNarrowingValue.getAsString(S.Context, PreNarrowingType) << ToType; | ||||||||
| 11263 | return true; | ||||||||
| 11264 | |||||||||
| 11265 | case NK_Variable_Narrowing: | ||||||||
| 11266 | // Implicit conversion to a narrower type, and the value is not a constant | ||||||||
| 11267 | // expression. | ||||||||
| 11268 | case NK_Type_Narrowing: | ||||||||
| 11269 | S.Diag(E->getBeginLoc(), diag::err_spaceship_argument_narrowing) | ||||||||
| 11270 | << /*Constant*/ 0 << FromType << ToType; | ||||||||
| 11271 | // TODO: It's not a constant expression, but what if the user intended it | ||||||||
| 11272 | // to be? Can we produce notes to help them figure out why it isn't? | ||||||||
| 11273 | return true; | ||||||||
| 11274 | } | ||||||||
| 11275 | llvm_unreachable("unhandled case in switch")::llvm::llvm_unreachable_internal("unhandled case in switch", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11275); | ||||||||
| 11276 | } | ||||||||
| 11277 | |||||||||
| 11278 | static QualType checkArithmeticOrEnumeralThreeWayCompare(Sema &S, | ||||||||
| 11279 | ExprResult &LHS, | ||||||||
| 11280 | ExprResult &RHS, | ||||||||
| 11281 | SourceLocation Loc) { | ||||||||
| 11282 | QualType LHSType = LHS.get()->getType(); | ||||||||
| 11283 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 11284 | // Dig out the original argument type and expression before implicit casts | ||||||||
| 11285 | // were applied. These are the types/expressions we need to check the | ||||||||
| 11286 | // [expr.spaceship] requirements against. | ||||||||
| 11287 | ExprResult LHSStripped = LHS.get()->IgnoreParenImpCasts(); | ||||||||
| 11288 | ExprResult RHSStripped = RHS.get()->IgnoreParenImpCasts(); | ||||||||
| 11289 | QualType LHSStrippedType = LHSStripped.get()->getType(); | ||||||||
| 11290 | QualType RHSStrippedType = RHSStripped.get()->getType(); | ||||||||
| 11291 | |||||||||
| 11292 | // C++2a [expr.spaceship]p3: If one of the operands is of type bool and the | ||||||||
| 11293 | // other is not, the program is ill-formed. | ||||||||
| 11294 | if (LHSStrippedType->isBooleanType() != RHSStrippedType->isBooleanType()) { | ||||||||
| 11295 | S.InvalidOperands(Loc, LHSStripped, RHSStripped); | ||||||||
| 11296 | return QualType(); | ||||||||
| 11297 | } | ||||||||
| 11298 | |||||||||
| 11299 | // FIXME: Consider combining this with checkEnumArithmeticConversions. | ||||||||
| 11300 | int NumEnumArgs = (int)LHSStrippedType->isEnumeralType() + | ||||||||
| 11301 | RHSStrippedType->isEnumeralType(); | ||||||||
| 11302 | if (NumEnumArgs == 1) { | ||||||||
| 11303 | bool LHSIsEnum = LHSStrippedType->isEnumeralType(); | ||||||||
| 11304 | QualType OtherTy = LHSIsEnum ? RHSStrippedType : LHSStrippedType; | ||||||||
| 11305 | if (OtherTy->hasFloatingRepresentation()) { | ||||||||
| 11306 | S.InvalidOperands(Loc, LHSStripped, RHSStripped); | ||||||||
| 11307 | return QualType(); | ||||||||
| 11308 | } | ||||||||
| 11309 | } | ||||||||
| 11310 | if (NumEnumArgs == 2) { | ||||||||
| 11311 | // C++2a [expr.spaceship]p5: If both operands have the same enumeration | ||||||||
| 11312 | // type E, the operator yields the result of converting the operands | ||||||||
| 11313 | // to the underlying type of E and applying <=> to the converted operands. | ||||||||
| 11314 | if (!S.Context.hasSameUnqualifiedType(LHSStrippedType, RHSStrippedType)) { | ||||||||
| 11315 | S.InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11316 | return QualType(); | ||||||||
| 11317 | } | ||||||||
| 11318 | QualType IntType = | ||||||||
| 11319 | LHSStrippedType->castAs<EnumType>()->getDecl()->getIntegerType(); | ||||||||
| 11320 | assert(IntType->isArithmeticType())((IntType->isArithmeticType()) ? static_cast<void> ( 0) : __assert_fail ("IntType->isArithmeticType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11320, __PRETTY_FUNCTION__)); | ||||||||
| 11321 | |||||||||
| 11322 | // We can't use `CK_IntegralCast` when the underlying type is 'bool', so we | ||||||||
| 11323 | // promote the boolean type, and all other promotable integer types, to | ||||||||
| 11324 | // avoid this. | ||||||||
| 11325 | if (IntType->isPromotableIntegerType()) | ||||||||
| 11326 | IntType = S.Context.getPromotedIntegerType(IntType); | ||||||||
| 11327 | |||||||||
| 11328 | LHS = S.ImpCastExprToType(LHS.get(), IntType, CK_IntegralCast); | ||||||||
| 11329 | RHS = S.ImpCastExprToType(RHS.get(), IntType, CK_IntegralCast); | ||||||||
| 11330 | LHSType = RHSType = IntType; | ||||||||
| 11331 | } | ||||||||
| 11332 | |||||||||
| 11333 | // C++2a [expr.spaceship]p4: If both operands have arithmetic types, the | ||||||||
| 11334 | // usual arithmetic conversions are applied to the operands. | ||||||||
| 11335 | QualType Type = | ||||||||
| 11336 | S.UsualArithmeticConversions(LHS, RHS, Loc, Sema::ACK_Comparison); | ||||||||
| 11337 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 11338 | return QualType(); | ||||||||
| 11339 | if (Type.isNull()) | ||||||||
| 11340 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11341 | |||||||||
| 11342 | Optional<ComparisonCategoryType> CCT = | ||||||||
| 11343 | getComparisonCategoryForBuiltinCmp(Type); | ||||||||
| 11344 | if (!CCT) | ||||||||
| 11345 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11346 | |||||||||
| 11347 | bool HasNarrowing = checkThreeWayNarrowingConversion( | ||||||||
| 11348 | S, Type, LHS.get(), LHSType, LHS.get()->getBeginLoc()); | ||||||||
| 11349 | HasNarrowing |= checkThreeWayNarrowingConversion(S, Type, RHS.get(), RHSType, | ||||||||
| 11350 | RHS.get()->getBeginLoc()); | ||||||||
| 11351 | if (HasNarrowing) | ||||||||
| 11352 | return QualType(); | ||||||||
| 11353 | |||||||||
| 11354 | assert(!Type.isNull() && "composite type for <=> has not been set")((!Type.isNull() && "composite type for <=> has not been set" ) ? static_cast<void> (0) : __assert_fail ("!Type.isNull() && \"composite type for <=> has not been set\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11354, __PRETTY_FUNCTION__)); | ||||||||
| 11355 | |||||||||
| 11356 | return S.CheckComparisonCategoryType( | ||||||||
| 11357 | *CCT, Loc, Sema::ComparisonCategoryUsage::OperatorInExpression); | ||||||||
| 11358 | } | ||||||||
| 11359 | |||||||||
| 11360 | static QualType checkArithmeticOrEnumeralCompare(Sema &S, ExprResult &LHS, | ||||||||
| 11361 | ExprResult &RHS, | ||||||||
| 11362 | SourceLocation Loc, | ||||||||
| 11363 | BinaryOperatorKind Opc) { | ||||||||
| 11364 | if (Opc == BO_Cmp) | ||||||||
| 11365 | return checkArithmeticOrEnumeralThreeWayCompare(S, LHS, RHS, Loc); | ||||||||
| 11366 | |||||||||
| 11367 | // C99 6.5.8p3 / C99 6.5.9p4 | ||||||||
| 11368 | QualType Type = | ||||||||
| 11369 | S.UsualArithmeticConversions(LHS, RHS, Loc, Sema::ACK_Comparison); | ||||||||
| 11370 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 11371 | return QualType(); | ||||||||
| 11372 | if (Type.isNull()) | ||||||||
| 11373 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11374 | assert(Type->isArithmeticType() || Type->isEnumeralType())((Type->isArithmeticType() || Type->isEnumeralType()) ? static_cast<void> (0) : __assert_fail ("Type->isArithmeticType() || Type->isEnumeralType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11374, __PRETTY_FUNCTION__)); | ||||||||
| 11375 | |||||||||
| 11376 | if (Type->isAnyComplexType() && BinaryOperator::isRelationalOp(Opc)) | ||||||||
| 11377 | return S.InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11378 | |||||||||
| 11379 | // Check for comparisons of floating point operands using != and ==. | ||||||||
| 11380 | if (Type->hasFloatingRepresentation() && BinaryOperator::isEqualityOp(Opc)) | ||||||||
| 11381 | S.CheckFloatComparison(Loc, LHS.get(), RHS.get()); | ||||||||
| 11382 | |||||||||
| 11383 | // The result of comparisons is 'bool' in C++, 'int' in C. | ||||||||
| 11384 | return S.Context.getLogicalOperationType(); | ||||||||
| 11385 | } | ||||||||
| 11386 | |||||||||
| 11387 | void Sema::CheckPtrComparisonWithNullChar(ExprResult &E, ExprResult &NullE) { | ||||||||
| 11388 | if (!NullE.get()->getType()->isAnyPointerType()) | ||||||||
| 11389 | return; | ||||||||
| 11390 | int NullValue = PP.isMacroDefined("NULL") ? 0 : 1; | ||||||||
| 11391 | if (!E.get()->getType()->isAnyPointerType() && | ||||||||
| 11392 | E.get()->isNullPointerConstant(Context, | ||||||||
| 11393 | Expr::NPC_ValueDependentIsNotNull) == | ||||||||
| 11394 | Expr::NPCK_ZeroExpression) { | ||||||||
| 11395 | if (const auto *CL = dyn_cast<CharacterLiteral>(E.get())) { | ||||||||
| 11396 | if (CL->getValue() == 0) | ||||||||
| 11397 | Diag(E.get()->getExprLoc(), diag::warn_pointer_compare) | ||||||||
| 11398 | << NullValue | ||||||||
| 11399 | << FixItHint::CreateReplacement(E.get()->getExprLoc(), | ||||||||
| 11400 | NullValue ? "NULL" : "(void *)0"); | ||||||||
| 11401 | } else if (const auto *CE = dyn_cast<CStyleCastExpr>(E.get())) { | ||||||||
| 11402 | TypeSourceInfo *TI = CE->getTypeInfoAsWritten(); | ||||||||
| 11403 | QualType T = Context.getCanonicalType(TI->getType()).getUnqualifiedType(); | ||||||||
| 11404 | if (T == Context.CharTy) | ||||||||
| 11405 | Diag(E.get()->getExprLoc(), diag::warn_pointer_compare) | ||||||||
| 11406 | << NullValue | ||||||||
| 11407 | << FixItHint::CreateReplacement(E.get()->getExprLoc(), | ||||||||
| 11408 | NullValue ? "NULL" : "(void *)0"); | ||||||||
| 11409 | } | ||||||||
| 11410 | } | ||||||||
| 11411 | } | ||||||||
| 11412 | |||||||||
| 11413 | // C99 6.5.8, C++ [expr.rel] | ||||||||
| 11414 | QualType Sema::CheckCompareOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 11415 | SourceLocation Loc, | ||||||||
| 11416 | BinaryOperatorKind Opc) { | ||||||||
| 11417 | bool IsRelational = BinaryOperator::isRelationalOp(Opc); | ||||||||
| 11418 | bool IsThreeWay = Opc == BO_Cmp; | ||||||||
| 11419 | bool IsOrdered = IsRelational || IsThreeWay; | ||||||||
| 11420 | auto IsAnyPointerType = [](ExprResult E) { | ||||||||
| 11421 | QualType Ty = E.get()->getType(); | ||||||||
| 11422 | return Ty->isPointerType() || Ty->isMemberPointerType(); | ||||||||
| 11423 | }; | ||||||||
| 11424 | |||||||||
| 11425 | // C++2a [expr.spaceship]p6: If at least one of the operands is of pointer | ||||||||
| 11426 | // type, array-to-pointer, ..., conversions are performed on both operands to | ||||||||
| 11427 | // bring them to their composite type. | ||||||||
| 11428 | // Otherwise, all comparisons expect an rvalue, so convert to rvalue before | ||||||||
| 11429 | // any type-related checks. | ||||||||
| 11430 | if (!IsThreeWay || IsAnyPointerType(LHS) || IsAnyPointerType(RHS)) { | ||||||||
| 11431 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
| 11432 | if (LHS.isInvalid()) | ||||||||
| 11433 | return QualType(); | ||||||||
| 11434 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
| 11435 | if (RHS.isInvalid()) | ||||||||
| 11436 | return QualType(); | ||||||||
| 11437 | } else { | ||||||||
| 11438 | LHS = DefaultLvalueConversion(LHS.get()); | ||||||||
| 11439 | if (LHS.isInvalid()) | ||||||||
| 11440 | return QualType(); | ||||||||
| 11441 | RHS = DefaultLvalueConversion(RHS.get()); | ||||||||
| 11442 | if (RHS.isInvalid()) | ||||||||
| 11443 | return QualType(); | ||||||||
| 11444 | } | ||||||||
| 11445 | |||||||||
| 11446 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/true); | ||||||||
| 11447 | if (!getLangOpts().CPlusPlus && BinaryOperator::isEqualityOp(Opc)) { | ||||||||
| 11448 | CheckPtrComparisonWithNullChar(LHS, RHS); | ||||||||
| 11449 | CheckPtrComparisonWithNullChar(RHS, LHS); | ||||||||
| 11450 | } | ||||||||
| 11451 | |||||||||
| 11452 | // Handle vector comparisons separately. | ||||||||
| 11453 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 11454 | RHS.get()->getType()->isVectorType()) | ||||||||
| 11455 | return CheckVectorCompareOperands(LHS, RHS, Loc, Opc); | ||||||||
| 11456 | |||||||||
| 11457 | diagnoseLogicalNotOnLHSofCheck(*this, LHS, RHS, Loc, Opc); | ||||||||
| 11458 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||||||
| 11459 | |||||||||
| 11460 | QualType LHSType = LHS.get()->getType(); | ||||||||
| 11461 | QualType RHSType = RHS.get()->getType(); | ||||||||
| 11462 | if ((LHSType->isArithmeticType() || LHSType->isEnumeralType()) && | ||||||||
| 11463 | (RHSType->isArithmeticType() || RHSType->isEnumeralType())) | ||||||||
| 11464 | return checkArithmeticOrEnumeralCompare(*this, LHS, RHS, Loc, Opc); | ||||||||
| 11465 | |||||||||
| 11466 | const Expr::NullPointerConstantKind LHSNullKind = | ||||||||
| 11467 | LHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); | ||||||||
| 11468 | const Expr::NullPointerConstantKind RHSNullKind = | ||||||||
| 11469 | RHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); | ||||||||
| 11470 | bool LHSIsNull = LHSNullKind != Expr::NPCK_NotNull; | ||||||||
| 11471 | bool RHSIsNull = RHSNullKind != Expr::NPCK_NotNull; | ||||||||
| 11472 | |||||||||
| 11473 | auto computeResultTy = [&]() { | ||||||||
| 11474 | if (Opc != BO_Cmp) | ||||||||
| 11475 | return Context.getLogicalOperationType(); | ||||||||
| 11476 | assert(getLangOpts().CPlusPlus)((getLangOpts().CPlusPlus) ? static_cast<void> (0) : __assert_fail ("getLangOpts().CPlusPlus", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11476, __PRETTY_FUNCTION__)); | ||||||||
| 11477 | assert(Context.hasSameType(LHS.get()->getType(), RHS.get()->getType()))((Context.hasSameType(LHS.get()->getType(), RHS.get()-> getType())) ? static_cast<void> (0) : __assert_fail ("Context.hasSameType(LHS.get()->getType(), RHS.get()->getType())" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11477, __PRETTY_FUNCTION__)); | ||||||||
| 11478 | |||||||||
| 11479 | QualType CompositeTy = LHS.get()->getType(); | ||||||||
| 11480 | assert(!CompositeTy->isReferenceType())((!CompositeTy->isReferenceType()) ? static_cast<void> (0) : __assert_fail ("!CompositeTy->isReferenceType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11480, __PRETTY_FUNCTION__)); | ||||||||
| 11481 | |||||||||
| 11482 | Optional<ComparisonCategoryType> CCT = | ||||||||
| 11483 | getComparisonCategoryForBuiltinCmp(CompositeTy); | ||||||||
| 11484 | if (!CCT) | ||||||||
| 11485 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11486 | |||||||||
| 11487 | if (CompositeTy->isPointerType() && LHSIsNull != RHSIsNull) { | ||||||||
| 11488 | // P0946R0: Comparisons between a null pointer constant and an object | ||||||||
| 11489 | // pointer result in std::strong_equality, which is ill-formed under | ||||||||
| 11490 | // P1959R0. | ||||||||
| 11491 | Diag(Loc, diag::err_typecheck_three_way_comparison_of_pointer_and_zero) | ||||||||
| 11492 | << (LHSIsNull ? LHS.get()->getSourceRange() | ||||||||
| 11493 | : RHS.get()->getSourceRange()); | ||||||||
| 11494 | return QualType(); | ||||||||
| 11495 | } | ||||||||
| 11496 | |||||||||
| 11497 | return CheckComparisonCategoryType( | ||||||||
| 11498 | *CCT, Loc, ComparisonCategoryUsage::OperatorInExpression); | ||||||||
| 11499 | }; | ||||||||
| 11500 | |||||||||
| 11501 | if (!IsOrdered && LHSIsNull != RHSIsNull) { | ||||||||
| 11502 | bool IsEquality = Opc == BO_EQ; | ||||||||
| 11503 | if (RHSIsNull) | ||||||||
| 11504 | DiagnoseAlwaysNonNullPointer(LHS.get(), RHSNullKind, IsEquality, | ||||||||
| 11505 | RHS.get()->getSourceRange()); | ||||||||
| 11506 | else | ||||||||
| 11507 | DiagnoseAlwaysNonNullPointer(RHS.get(), LHSNullKind, IsEquality, | ||||||||
| 11508 | LHS.get()->getSourceRange()); | ||||||||
| 11509 | } | ||||||||
| 11510 | |||||||||
| 11511 | if ((LHSType->isIntegerType() && !LHSIsNull) || | ||||||||
| 11512 | (RHSType->isIntegerType() && !RHSIsNull)) { | ||||||||
| 11513 | // Skip normal pointer conversion checks in this case; we have better | ||||||||
| 11514 | // diagnostics for this below. | ||||||||
| 11515 | } else if (getLangOpts().CPlusPlus) { | ||||||||
| 11516 | // Equality comparison of a function pointer to a void pointer is invalid, | ||||||||
| 11517 | // but we allow it as an extension. | ||||||||
| 11518 | // FIXME: If we really want to allow this, should it be part of composite | ||||||||
| 11519 | // pointer type computation so it works in conditionals too? | ||||||||
| 11520 | if (!IsOrdered && | ||||||||
| 11521 | ((LHSType->isFunctionPointerType() && RHSType->isVoidPointerType()) || | ||||||||
| 11522 | (RHSType->isFunctionPointerType() && LHSType->isVoidPointerType()))) { | ||||||||
| 11523 | // This is a gcc extension compatibility comparison. | ||||||||
| 11524 | // In a SFINAE context, we treat this as a hard error to maintain | ||||||||
| 11525 | // conformance with the C++ standard. | ||||||||
| 11526 | diagnoseFunctionPointerToVoidComparison( | ||||||||
| 11527 | *this, Loc, LHS, RHS, /*isError*/ (bool)isSFINAEContext()); | ||||||||
| 11528 | |||||||||
| 11529 | if (isSFINAEContext()) | ||||||||
| 11530 | return QualType(); | ||||||||
| 11531 | |||||||||
| 11532 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
| 11533 | return computeResultTy(); | ||||||||
| 11534 | } | ||||||||
| 11535 | |||||||||
| 11536 | // C++ [expr.eq]p2: | ||||||||
| 11537 | // If at least one operand is a pointer [...] bring them to their | ||||||||
| 11538 | // composite pointer type. | ||||||||
| 11539 | // C++ [expr.spaceship]p6 | ||||||||
| 11540 | // If at least one of the operands is of pointer type, [...] bring them | ||||||||
| 11541 | // to their composite pointer type. | ||||||||
| 11542 | // C++ [expr.rel]p2: | ||||||||
| 11543 | // If both operands are pointers, [...] bring them to their composite | ||||||||
| 11544 | // pointer type. | ||||||||
| 11545 | // For <=>, the only valid non-pointer types are arrays and functions, and | ||||||||
| 11546 | // we already decayed those, so this is really the same as the relational | ||||||||
| 11547 | // comparison rule. | ||||||||
| 11548 | if ((int)LHSType->isPointerType() + (int)RHSType->isPointerType() >= | ||||||||
| 11549 | (IsOrdered ? 2 : 1) && | ||||||||
| 11550 | (!LangOpts.ObjCAutoRefCount || !(LHSType->isObjCObjectPointerType() || | ||||||||
| 11551 | RHSType->isObjCObjectPointerType()))) { | ||||||||
| 11552 | if (convertPointersToCompositeType(*this, Loc, LHS, RHS)) | ||||||||
| 11553 | return QualType(); | ||||||||
| 11554 | return computeResultTy(); | ||||||||
| 11555 | } | ||||||||
| 11556 | } else if (LHSType->isPointerType() && | ||||||||
| 11557 | RHSType->isPointerType()) { // C99 6.5.8p2 | ||||||||
| 11558 | // All of the following pointer-related warnings are GCC extensions, except | ||||||||
| 11559 | // when handling null pointer constants. | ||||||||
| 11560 | QualType LCanPointeeTy = | ||||||||
| 11561 | LHSType->castAs<PointerType>()->getPointeeType().getCanonicalType(); | ||||||||
| 11562 | QualType RCanPointeeTy = | ||||||||
| 11563 | RHSType->castAs<PointerType>()->getPointeeType().getCanonicalType(); | ||||||||
| 11564 | |||||||||
| 11565 | // C99 6.5.9p2 and C99 6.5.8p2 | ||||||||
| 11566 | if (Context.typesAreCompatible(LCanPointeeTy.getUnqualifiedType(), | ||||||||
| 11567 | RCanPointeeTy.getUnqualifiedType())) { | ||||||||
| 11568 | if (IsRelational) { | ||||||||
| 11569 | // Pointers both need to point to complete or incomplete types | ||||||||
| 11570 | if ((LCanPointeeTy->isIncompleteType() != | ||||||||
| 11571 | RCanPointeeTy->isIncompleteType()) && | ||||||||
| 11572 | !getLangOpts().C11) { | ||||||||
| 11573 | Diag(Loc, diag::ext_typecheck_compare_complete_incomplete_pointers) | ||||||||
| 11574 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange() | ||||||||
| 11575 | << LHSType << RHSType << LCanPointeeTy->isIncompleteType() | ||||||||
| 11576 | << RCanPointeeTy->isIncompleteType(); | ||||||||
| 11577 | } | ||||||||
| 11578 | if (LCanPointeeTy->isFunctionType()) { | ||||||||
| 11579 | // Valid unless a relational comparison of function pointers | ||||||||
| 11580 | Diag(Loc, diag::ext_typecheck_ordered_comparison_of_function_pointers) | ||||||||
| 11581 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
| 11582 | << RHS.get()->getSourceRange(); | ||||||||
| 11583 | } | ||||||||
| 11584 | } | ||||||||
| 11585 | } else if (!IsRelational && | ||||||||
| 11586 | (LCanPointeeTy->isVoidType() || RCanPointeeTy->isVoidType())) { | ||||||||
| 11587 | // Valid unless comparison between non-null pointer and function pointer | ||||||||
| 11588 | if ((LCanPointeeTy->isFunctionType() || RCanPointeeTy->isFunctionType()) | ||||||||
| 11589 | && !LHSIsNull && !RHSIsNull) | ||||||||
| 11590 | diagnoseFunctionPointerToVoidComparison(*this, Loc, LHS, RHS, | ||||||||
| 11591 | /*isError*/false); | ||||||||
| 11592 | } else { | ||||||||
| 11593 | // Invalid | ||||||||
| 11594 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, /*isError*/false); | ||||||||
| 11595 | } | ||||||||
| 11596 | if (LCanPointeeTy != RCanPointeeTy) { | ||||||||
| 11597 | // Treat NULL constant as a special case in OpenCL. | ||||||||
| 11598 | if (getLangOpts().OpenCL && !LHSIsNull && !RHSIsNull) { | ||||||||
| 11599 | if (!LCanPointeeTy.isAddressSpaceOverlapping(RCanPointeeTy)) { | ||||||||
| 11600 | Diag(Loc, | ||||||||
| 11601 | diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||||||
| 11602 | << LHSType << RHSType << 0 /* comparison */ | ||||||||
| 11603 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||||||
| 11604 | } | ||||||||
| 11605 | } | ||||||||
| 11606 | LangAS AddrSpaceL = LCanPointeeTy.getAddressSpace(); | ||||||||
| 11607 | LangAS AddrSpaceR = RCanPointeeTy.getAddressSpace(); | ||||||||
| 11608 | CastKind Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion | ||||||||
| 11609 | : CK_BitCast; | ||||||||
| 11610 | if (LHSIsNull && !RHSIsNull) | ||||||||
| 11611 | LHS = ImpCastExprToType(LHS.get(), RHSType, Kind); | ||||||||
| 11612 | else | ||||||||
| 11613 | RHS = ImpCastExprToType(RHS.get(), LHSType, Kind); | ||||||||
| 11614 | } | ||||||||
| 11615 | return computeResultTy(); | ||||||||
| 11616 | } | ||||||||
| 11617 | |||||||||
| 11618 | if (getLangOpts().CPlusPlus) { | ||||||||
| 11619 | // C++ [expr.eq]p4: | ||||||||
| 11620 | // Two operands of type std::nullptr_t or one operand of type | ||||||||
| 11621 | // std::nullptr_t and the other a null pointer constant compare equal. | ||||||||
| 11622 | if (!IsOrdered && LHSIsNull && RHSIsNull) { | ||||||||
| 11623 | if (LHSType->isNullPtrType()) { | ||||||||
| 11624 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
| 11625 | return computeResultTy(); | ||||||||
| 11626 | } | ||||||||
| 11627 | if (RHSType->isNullPtrType()) { | ||||||||
| 11628 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
| 11629 | return computeResultTy(); | ||||||||
| 11630 | } | ||||||||
| 11631 | } | ||||||||
| 11632 | |||||||||
| 11633 | // Comparison of Objective-C pointers and block pointers against nullptr_t. | ||||||||
| 11634 | // These aren't covered by the composite pointer type rules. | ||||||||
| 11635 | if (!IsOrdered && RHSType->isNullPtrType() && | ||||||||
| 11636 | (LHSType->isObjCObjectPointerType() || LHSType->isBlockPointerType())) { | ||||||||
| 11637 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
| 11638 | return computeResultTy(); | ||||||||
| 11639 | } | ||||||||
| 11640 | if (!IsOrdered && LHSType->isNullPtrType() && | ||||||||
| 11641 | (RHSType->isObjCObjectPointerType() || RHSType->isBlockPointerType())) { | ||||||||
| 11642 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
| 11643 | return computeResultTy(); | ||||||||
| 11644 | } | ||||||||
| 11645 | |||||||||
| 11646 | if (IsRelational && | ||||||||
| 11647 | ((LHSType->isNullPtrType() && RHSType->isPointerType()) || | ||||||||
| 11648 | (RHSType->isNullPtrType() && LHSType->isPointerType()))) { | ||||||||
| 11649 | // HACK: Relational comparison of nullptr_t against a pointer type is | ||||||||
| 11650 | // invalid per DR583, but we allow it within std::less<> and friends, | ||||||||
| 11651 | // since otherwise common uses of it break. | ||||||||
| 11652 | // FIXME: Consider removing this hack once LWG fixes std::less<> and | ||||||||
| 11653 | // friends to have std::nullptr_t overload candidates. | ||||||||
| 11654 | DeclContext *DC = CurContext; | ||||||||
| 11655 | if (isa<FunctionDecl>(DC)) | ||||||||
| 11656 | DC = DC->getParent(); | ||||||||
| 11657 | if (auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(DC)) { | ||||||||
| 11658 | if (CTSD->isInStdNamespace() && | ||||||||
| 11659 | llvm::StringSwitch<bool>(CTSD->getName()) | ||||||||
| 11660 | .Cases("less", "less_equal", "greater", "greater_equal", true) | ||||||||
| 11661 | .Default(false)) { | ||||||||
| 11662 | if (RHSType->isNullPtrType()) | ||||||||
| 11663 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
| 11664 | else | ||||||||
| 11665 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
| 11666 | return computeResultTy(); | ||||||||
| 11667 | } | ||||||||
| 11668 | } | ||||||||
| 11669 | } | ||||||||
| 11670 | |||||||||
| 11671 | // C++ [expr.eq]p2: | ||||||||
| 11672 | // If at least one operand is a pointer to member, [...] bring them to | ||||||||
| 11673 | // their composite pointer type. | ||||||||
| 11674 | if (!IsOrdered && | ||||||||
| 11675 | (LHSType->isMemberPointerType() || RHSType->isMemberPointerType())) { | ||||||||
| 11676 | if (convertPointersToCompositeType(*this, Loc, LHS, RHS)) | ||||||||
| 11677 | return QualType(); | ||||||||
| 11678 | else | ||||||||
| 11679 | return computeResultTy(); | ||||||||
| 11680 | } | ||||||||
| 11681 | } | ||||||||
| 11682 | |||||||||
| 11683 | // Handle block pointer types. | ||||||||
| 11684 | if (!IsOrdered && LHSType->isBlockPointerType() && | ||||||||
| 11685 | RHSType->isBlockPointerType()) { | ||||||||
| 11686 | QualType lpointee = LHSType->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
| 11687 | QualType rpointee = RHSType->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
| 11688 | |||||||||
| 11689 | if (!LHSIsNull && !RHSIsNull && | ||||||||
| 11690 | !Context.typesAreCompatible(lpointee, rpointee)) { | ||||||||
| 11691 | Diag(Loc, diag::err_typecheck_comparison_of_distinct_blocks) | ||||||||
| 11692 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
| 11693 | << RHS.get()->getSourceRange(); | ||||||||
| 11694 | } | ||||||||
| 11695 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
| 11696 | return computeResultTy(); | ||||||||
| 11697 | } | ||||||||
| 11698 | |||||||||
| 11699 | // Allow block pointers to be compared with null pointer constants. | ||||||||
| 11700 | if (!IsOrdered | ||||||||
| 11701 | && ((LHSType->isBlockPointerType() && RHSType->isPointerType()) | ||||||||
| 11702 | || (LHSType->isPointerType() && RHSType->isBlockPointerType()))) { | ||||||||
| 11703 | if (!LHSIsNull && !RHSIsNull) { | ||||||||
| 11704 | if (!((RHSType->isPointerType() && RHSType->castAs<PointerType>() | ||||||||
| 11705 | ->getPointeeType()->isVoidType()) | ||||||||
| 11706 | || (LHSType->isPointerType() && LHSType->castAs<PointerType>() | ||||||||
| 11707 | ->getPointeeType()->isVoidType()))) | ||||||||
| 11708 | Diag(Loc, diag::err_typecheck_comparison_of_distinct_blocks) | ||||||||
| 11709 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
| 11710 | << RHS.get()->getSourceRange(); | ||||||||
| 11711 | } | ||||||||
| 11712 | if (LHSIsNull && !RHSIsNull) | ||||||||
| 11713 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||||||
| 11714 | RHSType->isPointerType() ? CK_BitCast | ||||||||
| 11715 | : CK_AnyPointerToBlockPointerCast); | ||||||||
| 11716 | else | ||||||||
| 11717 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||||||
| 11718 | LHSType->isPointerType() ? CK_BitCast | ||||||||
| 11719 | : CK_AnyPointerToBlockPointerCast); | ||||||||
| 11720 | return computeResultTy(); | ||||||||
| 11721 | } | ||||||||
| 11722 | |||||||||
| 11723 | if (LHSType->isObjCObjectPointerType() || | ||||||||
| 11724 | RHSType->isObjCObjectPointerType()) { | ||||||||
| 11725 | const PointerType *LPT = LHSType->getAs<PointerType>(); | ||||||||
| 11726 | const PointerType *RPT = RHSType->getAs<PointerType>(); | ||||||||
| 11727 | if (LPT || RPT) { | ||||||||
| 11728 | bool LPtrToVoid = LPT ? LPT->getPointeeType()->isVoidType() : false; | ||||||||
| 11729 | bool RPtrToVoid = RPT ? RPT->getPointeeType()->isVoidType() : false; | ||||||||
| 11730 | |||||||||
| 11731 | if (!LPtrToVoid && !RPtrToVoid && | ||||||||
| 11732 | !Context.typesAreCompatible(LHSType, RHSType)) { | ||||||||
| 11733 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, | ||||||||
| 11734 | /*isError*/false); | ||||||||
| 11735 | } | ||||||||
| 11736 | // FIXME: If LPtrToVoid, we should presumably convert the LHS rather than | ||||||||
| 11737 | // the RHS, but we have test coverage for this behavior. | ||||||||
| 11738 | // FIXME: Consider using convertPointersToCompositeType in C++. | ||||||||
| 11739 | if (LHSIsNull && !RHSIsNull) { | ||||||||
| 11740 | Expr *E = LHS.get(); | ||||||||
| 11741 | if (getLangOpts().ObjCAutoRefCount) | ||||||||
| 11742 | CheckObjCConversion(SourceRange(), RHSType, E, | ||||||||
| 11743 | CCK_ImplicitConversion); | ||||||||
| 11744 | LHS = ImpCastExprToType(E, RHSType, | ||||||||
| 11745 | RPT ? CK_BitCast :CK_CPointerToObjCPointerCast); | ||||||||
| 11746 | } | ||||||||
| 11747 | else { | ||||||||
| 11748 | Expr *E = RHS.get(); | ||||||||
| 11749 | if (getLangOpts().ObjCAutoRefCount) | ||||||||
| 11750 | CheckObjCConversion(SourceRange(), LHSType, E, CCK_ImplicitConversion, | ||||||||
| 11751 | /*Diagnose=*/true, | ||||||||
| 11752 | /*DiagnoseCFAudited=*/false, Opc); | ||||||||
| 11753 | RHS = ImpCastExprToType(E, LHSType, | ||||||||
| 11754 | LPT ? CK_BitCast :CK_CPointerToObjCPointerCast); | ||||||||
| 11755 | } | ||||||||
| 11756 | return computeResultTy(); | ||||||||
| 11757 | } | ||||||||
| 11758 | if (LHSType->isObjCObjectPointerType() && | ||||||||
| 11759 | RHSType->isObjCObjectPointerType()) { | ||||||||
| 11760 | if (!Context.areComparableObjCPointerTypes(LHSType, RHSType)) | ||||||||
| 11761 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, | ||||||||
| 11762 | /*isError*/false); | ||||||||
| 11763 | if (isObjCObjectLiteral(LHS) || isObjCObjectLiteral(RHS)) | ||||||||
| 11764 | diagnoseObjCLiteralComparison(*this, Loc, LHS, RHS, Opc); | ||||||||
| 11765 | |||||||||
| 11766 | if (LHSIsNull && !RHSIsNull) | ||||||||
| 11767 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||||||
| 11768 | else | ||||||||
| 11769 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||||||
| 11770 | return computeResultTy(); | ||||||||
| 11771 | } | ||||||||
| 11772 | |||||||||
| 11773 | if (!IsOrdered && LHSType->isBlockPointerType() && | ||||||||
| 11774 | RHSType->isBlockCompatibleObjCPointerType(Context)) { | ||||||||
| 11775 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||||||
| 11776 | CK_BlockPointerToObjCPointerCast); | ||||||||
| 11777 | return computeResultTy(); | ||||||||
| 11778 | } else if (!IsOrdered && | ||||||||
| 11779 | LHSType->isBlockCompatibleObjCPointerType(Context) && | ||||||||
| 11780 | RHSType->isBlockPointerType()) { | ||||||||
| 11781 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||||||
| 11782 | CK_BlockPointerToObjCPointerCast); | ||||||||
| 11783 | return computeResultTy(); | ||||||||
| 11784 | } | ||||||||
| 11785 | } | ||||||||
| 11786 | if ((LHSType->isAnyPointerType() && RHSType->isIntegerType()) || | ||||||||
| 11787 | (LHSType->isIntegerType() && RHSType->isAnyPointerType())) { | ||||||||
| 11788 | unsigned DiagID = 0; | ||||||||
| 11789 | bool isError = false; | ||||||||
| 11790 | if (LangOpts.DebuggerSupport) { | ||||||||
| 11791 | // Under a debugger, allow the comparison of pointers to integers, | ||||||||
| 11792 | // since users tend to want to compare addresses. | ||||||||
| 11793 | } else if ((LHSIsNull && LHSType->isIntegerType()) || | ||||||||
| 11794 | (RHSIsNull && RHSType->isIntegerType())) { | ||||||||
| 11795 | if (IsOrdered) { | ||||||||
| 11796 | isError = getLangOpts().CPlusPlus; | ||||||||
| 11797 | DiagID = | ||||||||
| 11798 | isError ? diag::err_typecheck_ordered_comparison_of_pointer_and_zero | ||||||||
| 11799 | : diag::ext_typecheck_ordered_comparison_of_pointer_and_zero; | ||||||||
| 11800 | } | ||||||||
| 11801 | } else if (getLangOpts().CPlusPlus) { | ||||||||
| 11802 | DiagID = diag::err_typecheck_comparison_of_pointer_integer; | ||||||||
| 11803 | isError = true; | ||||||||
| 11804 | } else if (IsOrdered) | ||||||||
| 11805 | DiagID = diag::ext_typecheck_ordered_comparison_of_pointer_integer; | ||||||||
| 11806 | else | ||||||||
| 11807 | DiagID = diag::ext_typecheck_comparison_of_pointer_integer; | ||||||||
| 11808 | |||||||||
| 11809 | if (DiagID) { | ||||||||
| 11810 | Diag(Loc, DiagID) | ||||||||
| 11811 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||||||
| 11812 | << RHS.get()->getSourceRange(); | ||||||||
| 11813 | if (isError) | ||||||||
| 11814 | return QualType(); | ||||||||
| 11815 | } | ||||||||
| 11816 | |||||||||
| 11817 | if (LHSType->isIntegerType()) | ||||||||
| 11818 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||||||
| 11819 | LHSIsNull ? CK_NullToPointer : CK_IntegralToPointer); | ||||||||
| 11820 | else | ||||||||
| 11821 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||||||
| 11822 | RHSIsNull ? CK_NullToPointer : CK_IntegralToPointer); | ||||||||
| 11823 | return computeResultTy(); | ||||||||
| 11824 | } | ||||||||
| 11825 | |||||||||
| 11826 | // Handle block pointers. | ||||||||
| 11827 | if (!IsOrdered && RHSIsNull | ||||||||
| 11828 | && LHSType->isBlockPointerType() && RHSType->isIntegerType()) { | ||||||||
| 11829 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
| 11830 | return computeResultTy(); | ||||||||
| 11831 | } | ||||||||
| 11832 | if (!IsOrdered && LHSIsNull | ||||||||
| 11833 | && LHSType->isIntegerType() && RHSType->isBlockPointerType()) { | ||||||||
| 11834 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
| 11835 | return computeResultTy(); | ||||||||
| 11836 | } | ||||||||
| 11837 | |||||||||
| 11838 | if (getLangOpts().OpenCLVersion >= 200 || getLangOpts().OpenCLCPlusPlus) { | ||||||||
| 11839 | if (LHSType->isClkEventT() && RHSType->isClkEventT()) { | ||||||||
| 11840 | return computeResultTy(); | ||||||||
| 11841 | } | ||||||||
| 11842 | |||||||||
| 11843 | if (LHSType->isQueueT() && RHSType->isQueueT()) { | ||||||||
| 11844 | return computeResultTy(); | ||||||||
| 11845 | } | ||||||||
| 11846 | |||||||||
| 11847 | if (LHSIsNull && RHSType->isQueueT()) { | ||||||||
| 11848 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||||||
| 11849 | return computeResultTy(); | ||||||||
| 11850 | } | ||||||||
| 11851 | |||||||||
| 11852 | if (LHSType->isQueueT() && RHSIsNull) { | ||||||||
| 11853 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||||||
| 11854 | return computeResultTy(); | ||||||||
| 11855 | } | ||||||||
| 11856 | } | ||||||||
| 11857 | |||||||||
| 11858 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 11859 | } | ||||||||
| 11860 | |||||||||
| 11861 | // Return a signed ext_vector_type that is of identical size and number of | ||||||||
| 11862 | // elements. For floating point vectors, return an integer type of identical | ||||||||
| 11863 | // size and number of elements. In the non ext_vector_type case, search from | ||||||||
| 11864 | // the largest type to the smallest type to avoid cases where long long == long, | ||||||||
| 11865 | // where long gets picked over long long. | ||||||||
| 11866 | QualType Sema::GetSignedVectorType(QualType V) { | ||||||||
| 11867 | const VectorType *VTy = V->castAs<VectorType>(); | ||||||||
| 11868 | unsigned TypeSize = Context.getTypeSize(VTy->getElementType()); | ||||||||
| 11869 | |||||||||
| 11870 | if (isa<ExtVectorType>(VTy)) { | ||||||||
| 11871 | if (TypeSize == Context.getTypeSize(Context.CharTy)) | ||||||||
| 11872 | return Context.getExtVectorType(Context.CharTy, VTy->getNumElements()); | ||||||||
| 11873 | else if (TypeSize == Context.getTypeSize(Context.ShortTy)) | ||||||||
| 11874 | return Context.getExtVectorType(Context.ShortTy, VTy->getNumElements()); | ||||||||
| 11875 | else if (TypeSize == Context.getTypeSize(Context.IntTy)) | ||||||||
| 11876 | return Context.getExtVectorType(Context.IntTy, VTy->getNumElements()); | ||||||||
| 11877 | else if (TypeSize == Context.getTypeSize(Context.LongTy)) | ||||||||
| 11878 | return Context.getExtVectorType(Context.LongTy, VTy->getNumElements()); | ||||||||
| 11879 | assert(TypeSize == Context.getTypeSize(Context.LongLongTy) &&((TypeSize == Context.getTypeSize(Context.LongLongTy) && "Unhandled vector element size in vector compare") ? static_cast <void> (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.LongLongTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11880, __PRETTY_FUNCTION__)) | ||||||||
| 11880 | "Unhandled vector element size in vector compare")((TypeSize == Context.getTypeSize(Context.LongLongTy) && "Unhandled vector element size in vector compare") ? static_cast <void> (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.LongLongTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11880, __PRETTY_FUNCTION__)); | ||||||||
| 11881 | return Context.getExtVectorType(Context.LongLongTy, VTy->getNumElements()); | ||||||||
| 11882 | } | ||||||||
| 11883 | |||||||||
| 11884 | if (TypeSize == Context.getTypeSize(Context.LongLongTy)) | ||||||||
| 11885 | return Context.getVectorType(Context.LongLongTy, VTy->getNumElements(), | ||||||||
| 11886 | VectorType::GenericVector); | ||||||||
| 11887 | else if (TypeSize == Context.getTypeSize(Context.LongTy)) | ||||||||
| 11888 | return Context.getVectorType(Context.LongTy, VTy->getNumElements(), | ||||||||
| 11889 | VectorType::GenericVector); | ||||||||
| 11890 | else if (TypeSize == Context.getTypeSize(Context.IntTy)) | ||||||||
| 11891 | return Context.getVectorType(Context.IntTy, VTy->getNumElements(), | ||||||||
| 11892 | VectorType::GenericVector); | ||||||||
| 11893 | else if (TypeSize == Context.getTypeSize(Context.ShortTy)) | ||||||||
| 11894 | return Context.getVectorType(Context.ShortTy, VTy->getNumElements(), | ||||||||
| 11895 | VectorType::GenericVector); | ||||||||
| 11896 | assert(TypeSize == Context.getTypeSize(Context.CharTy) &&((TypeSize == Context.getTypeSize(Context.CharTy) && "Unhandled vector element size in vector compare" ) ? static_cast<void> (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.CharTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11897, __PRETTY_FUNCTION__)) | ||||||||
| 11897 | "Unhandled vector element size in vector compare")((TypeSize == Context.getTypeSize(Context.CharTy) && "Unhandled vector element size in vector compare" ) ? static_cast<void> (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.CharTy) && \"Unhandled vector element size in vector compare\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11897, __PRETTY_FUNCTION__)); | ||||||||
| 11898 | return Context.getVectorType(Context.CharTy, VTy->getNumElements(), | ||||||||
| 11899 | VectorType::GenericVector); | ||||||||
| 11900 | } | ||||||||
| 11901 | |||||||||
| 11902 | /// CheckVectorCompareOperands - vector comparisons are a clang extension that | ||||||||
| 11903 | /// operates on extended vector types. Instead of producing an IntTy result, | ||||||||
| 11904 | /// like a scalar comparison, a vector comparison produces a vector of integer | ||||||||
| 11905 | /// types. | ||||||||
| 11906 | QualType Sema::CheckVectorCompareOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 11907 | SourceLocation Loc, | ||||||||
| 11908 | BinaryOperatorKind Opc) { | ||||||||
| 11909 | if (Opc == BO_Cmp) { | ||||||||
| 11910 | Diag(Loc, diag::err_three_way_vector_comparison); | ||||||||
| 11911 | return QualType(); | ||||||||
| 11912 | } | ||||||||
| 11913 | |||||||||
| 11914 | // Check to make sure we're operating on vectors of the same type and width, | ||||||||
| 11915 | // Allowing one side to be a scalar of element type. | ||||||||
| 11916 | QualType vType = CheckVectorOperands(LHS, RHS, Loc, /*isCompAssign*/false, | ||||||||
| 11917 | /*AllowBothBool*/true, | ||||||||
| 11918 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
| 11919 | if (vType.isNull()) | ||||||||
| 11920 | return vType; | ||||||||
| 11921 | |||||||||
| 11922 | QualType LHSType = LHS.get()->getType(); | ||||||||
| 11923 | |||||||||
| 11924 | // If AltiVec, the comparison results in a numeric type, i.e. | ||||||||
| 11925 | // bool for C++, int for C | ||||||||
| 11926 | if (getLangOpts().AltiVec && | ||||||||
| 11927 | vType->castAs<VectorType>()->getVectorKind() == VectorType::AltiVecVector) | ||||||||
| 11928 | return Context.getLogicalOperationType(); | ||||||||
| 11929 | |||||||||
| 11930 | // For non-floating point types, check for self-comparisons of the form | ||||||||
| 11931 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||||||
| 11932 | // often indicate logic errors in the program. | ||||||||
| 11933 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||||||
| 11934 | |||||||||
| 11935 | // Check for comparisons of floating point operands using != and ==. | ||||||||
| 11936 | if (BinaryOperator::isEqualityOp(Opc) && | ||||||||
| 11937 | LHSType->hasFloatingRepresentation()) { | ||||||||
| 11938 | assert(RHS.get()->getType()->hasFloatingRepresentation())((RHS.get()->getType()->hasFloatingRepresentation()) ? static_cast <void> (0) : __assert_fail ("RHS.get()->getType()->hasFloatingRepresentation()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 11938, __PRETTY_FUNCTION__)); | ||||||||
| 11939 | CheckFloatComparison(Loc, LHS.get(), RHS.get()); | ||||||||
| 11940 | } | ||||||||
| 11941 | |||||||||
| 11942 | // Return a signed type for the vector. | ||||||||
| 11943 | return GetSignedVectorType(vType); | ||||||||
| 11944 | } | ||||||||
| 11945 | |||||||||
| 11946 | static void diagnoseXorMisusedAsPow(Sema &S, const ExprResult &XorLHS, | ||||||||
| 11947 | const ExprResult &XorRHS, | ||||||||
| 11948 | const SourceLocation Loc) { | ||||||||
| 11949 | // Do not diagnose macros. | ||||||||
| 11950 | if (Loc.isMacroID()) | ||||||||
| 11951 | return; | ||||||||
| 11952 | |||||||||
| 11953 | bool Negative = false; | ||||||||
| 11954 | bool ExplicitPlus = false; | ||||||||
| 11955 | const auto *LHSInt = dyn_cast<IntegerLiteral>(XorLHS.get()); | ||||||||
| 11956 | const auto *RHSInt = dyn_cast<IntegerLiteral>(XorRHS.get()); | ||||||||
| 11957 | |||||||||
| 11958 | if (!LHSInt) | ||||||||
| 11959 | return; | ||||||||
| 11960 | if (!RHSInt) { | ||||||||
| 11961 | // Check negative literals. | ||||||||
| 11962 | if (const auto *UO = dyn_cast<UnaryOperator>(XorRHS.get())) { | ||||||||
| 11963 | UnaryOperatorKind Opc = UO->getOpcode(); | ||||||||
| 11964 | if (Opc != UO_Minus && Opc != UO_Plus) | ||||||||
| 11965 | return; | ||||||||
| 11966 | RHSInt = dyn_cast<IntegerLiteral>(UO->getSubExpr()); | ||||||||
| 11967 | if (!RHSInt) | ||||||||
| 11968 | return; | ||||||||
| 11969 | Negative = (Opc == UO_Minus); | ||||||||
| 11970 | ExplicitPlus = !Negative; | ||||||||
| 11971 | } else { | ||||||||
| 11972 | return; | ||||||||
| 11973 | } | ||||||||
| 11974 | } | ||||||||
| 11975 | |||||||||
| 11976 | const llvm::APInt &LeftSideValue = LHSInt->getValue(); | ||||||||
| 11977 | llvm::APInt RightSideValue = RHSInt->getValue(); | ||||||||
| 11978 | if (LeftSideValue != 2 && LeftSideValue != 10) | ||||||||
| 11979 | return; | ||||||||
| 11980 | |||||||||
| 11981 | if (LeftSideValue.getBitWidth() != RightSideValue.getBitWidth()) | ||||||||
| 11982 | return; | ||||||||
| 11983 | |||||||||
| 11984 | CharSourceRange ExprRange = CharSourceRange::getCharRange( | ||||||||
| 11985 | LHSInt->getBeginLoc(), S.getLocForEndOfToken(RHSInt->getLocation())); | ||||||||
| 11986 | llvm::StringRef ExprStr = | ||||||||
| 11987 | Lexer::getSourceText(ExprRange, S.getSourceManager(), S.getLangOpts()); | ||||||||
| 11988 | |||||||||
| 11989 | CharSourceRange XorRange = | ||||||||
| 11990 | CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); | ||||||||
| 11991 | llvm::StringRef XorStr = | ||||||||
| 11992 | Lexer::getSourceText(XorRange, S.getSourceManager(), S.getLangOpts()); | ||||||||
| 11993 | // Do not diagnose if xor keyword/macro is used. | ||||||||
| 11994 | if (XorStr == "xor") | ||||||||
| 11995 | return; | ||||||||
| 11996 | |||||||||
| 11997 | std::string LHSStr = std::string(Lexer::getSourceText( | ||||||||
| 11998 | CharSourceRange::getTokenRange(LHSInt->getSourceRange()), | ||||||||
| 11999 | S.getSourceManager(), S.getLangOpts())); | ||||||||
| 12000 | std::string RHSStr = std::string(Lexer::getSourceText( | ||||||||
| 12001 | CharSourceRange::getTokenRange(RHSInt->getSourceRange()), | ||||||||
| 12002 | S.getSourceManager(), S.getLangOpts())); | ||||||||
| 12003 | |||||||||
| 12004 | if (Negative) { | ||||||||
| 12005 | RightSideValue = -RightSideValue; | ||||||||
| 12006 | RHSStr = "-" + RHSStr; | ||||||||
| 12007 | } else if (ExplicitPlus) { | ||||||||
| 12008 | RHSStr = "+" + RHSStr; | ||||||||
| 12009 | } | ||||||||
| 12010 | |||||||||
| 12011 | StringRef LHSStrRef = LHSStr; | ||||||||
| 12012 | StringRef RHSStrRef = RHSStr; | ||||||||
| 12013 | // Do not diagnose literals with digit separators, binary, hexadecimal, octal | ||||||||
| 12014 | // literals. | ||||||||
| 12015 | if (LHSStrRef.startswith("0b") || LHSStrRef.startswith("0B") || | ||||||||
| 12016 | RHSStrRef.startswith("0b") || RHSStrRef.startswith("0B") || | ||||||||
| 12017 | LHSStrRef.startswith("0x") || LHSStrRef.startswith("0X") || | ||||||||
| 12018 | RHSStrRef.startswith("0x") || RHSStrRef.startswith("0X") || | ||||||||
| 12019 | (LHSStrRef.size() > 1 && LHSStrRef.startswith("0")) || | ||||||||
| 12020 | (RHSStrRef.size() > 1 && RHSStrRef.startswith("0")) || | ||||||||
| 12021 | LHSStrRef.find('\'') != StringRef::npos || | ||||||||
| 12022 | RHSStrRef.find('\'') != StringRef::npos) | ||||||||
| 12023 | return; | ||||||||
| 12024 | |||||||||
| 12025 | bool SuggestXor = S.getLangOpts().CPlusPlus || S.getPreprocessor().isMacroDefined("xor"); | ||||||||
| 12026 | const llvm::APInt XorValue = LeftSideValue ^ RightSideValue; | ||||||||
| 12027 | int64_t RightSideIntValue = RightSideValue.getSExtValue(); | ||||||||
| 12028 | if (LeftSideValue == 2 && RightSideIntValue >= 0) { | ||||||||
| 12029 | std::string SuggestedExpr = "1 << " + RHSStr; | ||||||||
| 12030 | bool Overflow = false; | ||||||||
| 12031 | llvm::APInt One = (LeftSideValue - 1); | ||||||||
| 12032 | llvm::APInt PowValue = One.sshl_ov(RightSideValue, Overflow); | ||||||||
| 12033 | if (Overflow) { | ||||||||
| 12034 | if (RightSideIntValue < 64) | ||||||||
| 12035 | S.Diag(Loc, diag::warn_xor_used_as_pow_base) | ||||||||
| 12036 | << ExprStr << XorValue.toString(10, true) << ("1LL << " + RHSStr) | ||||||||
| 12037 | << FixItHint::CreateReplacement(ExprRange, "1LL << " + RHSStr); | ||||||||
| 12038 | else if (RightSideIntValue == 64) | ||||||||
| 12039 | S.Diag(Loc, diag::warn_xor_used_as_pow) << ExprStr << XorValue.toString(10, true); | ||||||||
| 12040 | else | ||||||||
| 12041 | return; | ||||||||
| 12042 | } else { | ||||||||
| 12043 | S.Diag(Loc, diag::warn_xor_used_as_pow_base_extra) | ||||||||
| 12044 | << ExprStr << XorValue.toString(10, true) << SuggestedExpr | ||||||||
| 12045 | << PowValue.toString(10, true) | ||||||||
| 12046 | << FixItHint::CreateReplacement( | ||||||||
| 12047 | ExprRange, (RightSideIntValue == 0) ? "1" : SuggestedExpr); | ||||||||
| 12048 | } | ||||||||
| 12049 | |||||||||
| 12050 | S.Diag(Loc, diag::note_xor_used_as_pow_silence) << ("0x2 ^ " + RHSStr) << SuggestXor; | ||||||||
| 12051 | } else if (LeftSideValue == 10) { | ||||||||
| 12052 | std::string SuggestedValue = "1e" + std::to_string(RightSideIntValue); | ||||||||
| 12053 | S.Diag(Loc, diag::warn_xor_used_as_pow_base) | ||||||||
| 12054 | << ExprStr << XorValue.toString(10, true) << SuggestedValue | ||||||||
| 12055 | << FixItHint::CreateReplacement(ExprRange, SuggestedValue); | ||||||||
| 12056 | S.Diag(Loc, diag::note_xor_used_as_pow_silence) << ("0xA ^ " + RHSStr) << SuggestXor; | ||||||||
| 12057 | } | ||||||||
| 12058 | } | ||||||||
| 12059 | |||||||||
| 12060 | QualType Sema::CheckVectorLogicalOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 12061 | SourceLocation Loc) { | ||||||||
| 12062 | // Ensure that either both operands are of the same vector type, or | ||||||||
| 12063 | // one operand is of a vector type and the other is of its element type. | ||||||||
| 12064 | QualType vType = CheckVectorOperands(LHS, RHS, Loc, false, | ||||||||
| 12065 | /*AllowBothBool*/true, | ||||||||
| 12066 | /*AllowBoolConversions*/false); | ||||||||
| 12067 | if (vType.isNull()) | ||||||||
| 12068 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12069 | if (getLangOpts().OpenCL && getLangOpts().OpenCLVersion < 120 && | ||||||||
| 12070 | !getLangOpts().OpenCLCPlusPlus && vType->hasFloatingRepresentation()) | ||||||||
| 12071 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12072 | // FIXME: The check for C++ here is for GCC compatibility. GCC rejects the | ||||||||
| 12073 | // usage of the logical operators && and || with vectors in C. This | ||||||||
| 12074 | // check could be notionally dropped. | ||||||||
| 12075 | if (!getLangOpts().CPlusPlus && | ||||||||
| 12076 | !(isa<ExtVectorType>(vType->getAs<VectorType>()))) | ||||||||
| 12077 | return InvalidLogicalVectorOperands(Loc, LHS, RHS); | ||||||||
| 12078 | |||||||||
| 12079 | return GetSignedVectorType(LHS.get()->getType()); | ||||||||
| 12080 | } | ||||||||
| 12081 | |||||||||
| 12082 | QualType Sema::CheckMatrixElementwiseOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 12083 | SourceLocation Loc, | ||||||||
| 12084 | bool IsCompAssign) { | ||||||||
| 12085 | if (!IsCompAssign) { | ||||||||
| 12086 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
| 12087 | if (LHS.isInvalid()) | ||||||||
| 12088 | return QualType(); | ||||||||
| 12089 | } | ||||||||
| 12090 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
| 12091 | if (RHS.isInvalid()) | ||||||||
| 12092 | return QualType(); | ||||||||
| 12093 | |||||||||
| 12094 | // For conversion purposes, we ignore any qualifiers. | ||||||||
| 12095 | // For example, "const float" and "float" are equivalent. | ||||||||
| 12096 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||||||
| 12097 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||||||
| 12098 | |||||||||
| 12099 | const MatrixType *LHSMatType = LHSType->getAs<MatrixType>(); | ||||||||
| 12100 | const MatrixType *RHSMatType = RHSType->getAs<MatrixType>(); | ||||||||
| 12101 | assert((LHSMatType || RHSMatType) && "At least one operand must be a matrix")(((LHSMatType || RHSMatType) && "At least one operand must be a matrix" ) ? static_cast<void> (0) : __assert_fail ("(LHSMatType || RHSMatType) && \"At least one operand must be a matrix\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12101, __PRETTY_FUNCTION__)); | ||||||||
| 12102 | |||||||||
| 12103 | if (Context.hasSameType(LHSType, RHSType)) | ||||||||
| 12104 | return LHSType; | ||||||||
| 12105 | |||||||||
| 12106 | // Type conversion may change LHS/RHS. Keep copies to the original results, in | ||||||||
| 12107 | // case we have to return InvalidOperands. | ||||||||
| 12108 | ExprResult OriginalLHS = LHS; | ||||||||
| 12109 | ExprResult OriginalRHS = RHS; | ||||||||
| 12110 | if (LHSMatType && !RHSMatType) { | ||||||||
| 12111 | RHS = tryConvertExprToType(RHS.get(), LHSMatType->getElementType()); | ||||||||
| 12112 | if (!RHS.isInvalid()) | ||||||||
| 12113 | return LHSType; | ||||||||
| 12114 | |||||||||
| 12115 | return InvalidOperands(Loc, OriginalLHS, OriginalRHS); | ||||||||
| 12116 | } | ||||||||
| 12117 | |||||||||
| 12118 | if (!LHSMatType && RHSMatType) { | ||||||||
| 12119 | LHS = tryConvertExprToType(LHS.get(), RHSMatType->getElementType()); | ||||||||
| 12120 | if (!LHS.isInvalid()) | ||||||||
| 12121 | return RHSType; | ||||||||
| 12122 | return InvalidOperands(Loc, OriginalLHS, OriginalRHS); | ||||||||
| 12123 | } | ||||||||
| 12124 | |||||||||
| 12125 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12126 | } | ||||||||
| 12127 | |||||||||
| 12128 | QualType Sema::CheckMatrixMultiplyOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 12129 | SourceLocation Loc, | ||||||||
| 12130 | bool IsCompAssign) { | ||||||||
| 12131 | if (!IsCompAssign) { | ||||||||
| 12132 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||||||
| 12133 | if (LHS.isInvalid()) | ||||||||
| 12134 | return QualType(); | ||||||||
| 12135 | } | ||||||||
| 12136 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
| 12137 | if (RHS.isInvalid()) | ||||||||
| 12138 | return QualType(); | ||||||||
| 12139 | |||||||||
| 12140 | auto *LHSMatType = LHS.get()->getType()->getAs<ConstantMatrixType>(); | ||||||||
| 12141 | auto *RHSMatType = RHS.get()->getType()->getAs<ConstantMatrixType>(); | ||||||||
| 12142 | assert((LHSMatType || RHSMatType) && "At least one operand must be a matrix")(((LHSMatType || RHSMatType) && "At least one operand must be a matrix" ) ? static_cast<void> (0) : __assert_fail ("(LHSMatType || RHSMatType) && \"At least one operand must be a matrix\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12142, __PRETTY_FUNCTION__)); | ||||||||
| 12143 | |||||||||
| 12144 | if (LHSMatType && RHSMatType) { | ||||||||
| 12145 | if (LHSMatType->getNumColumns() != RHSMatType->getNumRows()) | ||||||||
| 12146 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12147 | |||||||||
| 12148 | if (!Context.hasSameType(LHSMatType->getElementType(), | ||||||||
| 12149 | RHSMatType->getElementType())) | ||||||||
| 12150 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12151 | |||||||||
| 12152 | return Context.getConstantMatrixType(LHSMatType->getElementType(), | ||||||||
| 12153 | LHSMatType->getNumRows(), | ||||||||
| 12154 | RHSMatType->getNumColumns()); | ||||||||
| 12155 | } | ||||||||
| 12156 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, IsCompAssign); | ||||||||
| 12157 | } | ||||||||
| 12158 | |||||||||
| 12159 | inline QualType Sema::CheckBitwiseOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 12160 | SourceLocation Loc, | ||||||||
| 12161 | BinaryOperatorKind Opc) { | ||||||||
| 12162 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||||||
| 12163 | |||||||||
| 12164 | bool IsCompAssign = | ||||||||
| 12165 | Opc == BO_AndAssign || Opc == BO_OrAssign || Opc == BO_XorAssign; | ||||||||
| 12166 | |||||||||
| 12167 | if (LHS.get()->getType()->isVectorType() || | ||||||||
| 12168 | RHS.get()->getType()->isVectorType()) { | ||||||||
| 12169 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||||||
| 12170 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||||||
| 12171 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||||||
| 12172 | /*AllowBothBool*/true, | ||||||||
| 12173 | /*AllowBoolConversions*/getLangOpts().ZVector); | ||||||||
| 12174 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12175 | } | ||||||||
| 12176 | |||||||||
| 12177 | if (Opc == BO_And) | ||||||||
| 12178 | diagnoseLogicalNotOnLHSofCheck(*this, LHS, RHS, Loc, Opc); | ||||||||
| 12179 | |||||||||
| 12180 | if (LHS.get()->getType()->hasFloatingRepresentation() || | ||||||||
| 12181 | RHS.get()->getType()->hasFloatingRepresentation()) | ||||||||
| 12182 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12183 | |||||||||
| 12184 | ExprResult LHSResult = LHS, RHSResult = RHS; | ||||||||
| 12185 | QualType compType = UsualArithmeticConversions( | ||||||||
| 12186 | LHSResult, RHSResult, Loc, IsCompAssign ? ACK_CompAssign : ACK_BitwiseOp); | ||||||||
| 12187 | if (LHSResult.isInvalid() || RHSResult.isInvalid()) | ||||||||
| 12188 | return QualType(); | ||||||||
| 12189 | LHS = LHSResult.get(); | ||||||||
| 12190 | RHS = RHSResult.get(); | ||||||||
| 12191 | |||||||||
| 12192 | if (Opc == BO_Xor) | ||||||||
| 12193 | diagnoseXorMisusedAsPow(*this, LHS, RHS, Loc); | ||||||||
| 12194 | |||||||||
| 12195 | if (!compType.isNull() && compType->isIntegralOrUnscopedEnumerationType()) | ||||||||
| 12196 | return compType; | ||||||||
| 12197 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12198 | } | ||||||||
| 12199 | |||||||||
| 12200 | // C99 6.5.[13,14] | ||||||||
| 12201 | inline QualType Sema::CheckLogicalOperands(ExprResult &LHS, ExprResult &RHS, | ||||||||
| 12202 | SourceLocation Loc, | ||||||||
| 12203 | BinaryOperatorKind Opc) { | ||||||||
| 12204 | // Check vector operands differently. | ||||||||
| 12205 | if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) | ||||||||
| 12206 | return CheckVectorLogicalOperands(LHS, RHS, Loc); | ||||||||
| 12207 | |||||||||
| 12208 | bool EnumConstantInBoolContext = false; | ||||||||
| 12209 | for (const ExprResult &HS : {LHS, RHS}) { | ||||||||
| 12210 | if (const auto *DREHS = dyn_cast<DeclRefExpr>(HS.get())) { | ||||||||
| 12211 | const auto *ECDHS = dyn_cast<EnumConstantDecl>(DREHS->getDecl()); | ||||||||
| 12212 | if (ECDHS && ECDHS->getInitVal() != 0 && ECDHS->getInitVal() != 1) | ||||||||
| 12213 | EnumConstantInBoolContext = true; | ||||||||
| 12214 | } | ||||||||
| 12215 | } | ||||||||
| 12216 | |||||||||
| 12217 | if (EnumConstantInBoolContext) | ||||||||
| 12218 | Diag(Loc, diag::warn_enum_constant_in_bool_context); | ||||||||
| 12219 | |||||||||
| 12220 | // Diagnose cases where the user write a logical and/or but probably meant a | ||||||||
| 12221 | // bitwise one. We do this when the LHS is a non-bool integer and the RHS | ||||||||
| 12222 | // is a constant. | ||||||||
| 12223 | if (!EnumConstantInBoolContext && LHS.get()->getType()->isIntegerType() && | ||||||||
| 12224 | !LHS.get()->getType()->isBooleanType() && | ||||||||
| 12225 | RHS.get()->getType()->isIntegerType() && !RHS.get()->isValueDependent() && | ||||||||
| 12226 | // Don't warn in macros or template instantiations. | ||||||||
| 12227 | !Loc.isMacroID() && !inTemplateInstantiation()) { | ||||||||
| 12228 | // If the RHS can be constant folded, and if it constant folds to something | ||||||||
| 12229 | // that isn't 0 or 1 (which indicate a potential logical operation that | ||||||||
| 12230 | // happened to fold to true/false) then warn. | ||||||||
| 12231 | // Parens on the RHS are ignored. | ||||||||
| 12232 | Expr::EvalResult EVResult; | ||||||||
| 12233 | if (RHS.get()->EvaluateAsInt(EVResult, Context)) { | ||||||||
| 12234 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||||||
| 12235 | if ((getLangOpts().Bool && !RHS.get()->getType()->isBooleanType() && | ||||||||
| 12236 | !RHS.get()->getExprLoc().isMacroID()) || | ||||||||
| 12237 | (Result != 0 && Result != 1)) { | ||||||||
| 12238 | Diag(Loc, diag::warn_logical_instead_of_bitwise) | ||||||||
| 12239 | << RHS.get()->getSourceRange() | ||||||||
| 12240 | << (Opc == BO_LAnd ? "&&" : "||"); | ||||||||
| 12241 | // Suggest replacing the logical operator with the bitwise version | ||||||||
| 12242 | Diag(Loc, diag::note_logical_instead_of_bitwise_change_operator) | ||||||||
| 12243 | << (Opc == BO_LAnd ? "&" : "|") | ||||||||
| 12244 | << FixItHint::CreateReplacement(SourceRange( | ||||||||
| 12245 | Loc, getLocForEndOfToken(Loc)), | ||||||||
| 12246 | Opc == BO_LAnd ? "&" : "|"); | ||||||||
| 12247 | if (Opc == BO_LAnd) | ||||||||
| 12248 | // Suggest replacing "Foo() && kNonZero" with "Foo()" | ||||||||
| 12249 | Diag(Loc, diag::note_logical_instead_of_bitwise_remove_constant) | ||||||||
| 12250 | << FixItHint::CreateRemoval( | ||||||||
| 12251 | SourceRange(getLocForEndOfToken(LHS.get()->getEndLoc()), | ||||||||
| 12252 | RHS.get()->getEndLoc())); | ||||||||
| 12253 | } | ||||||||
| 12254 | } | ||||||||
| 12255 | } | ||||||||
| 12256 | |||||||||
| 12257 | if (!Context.getLangOpts().CPlusPlus) { | ||||||||
| 12258 | // OpenCL v1.1 s6.3.g: The logical operators and (&&), or (||) do | ||||||||
| 12259 | // not operate on the built-in scalar and vector float types. | ||||||||
| 12260 | if (Context.getLangOpts().OpenCL && | ||||||||
| 12261 | Context.getLangOpts().OpenCLVersion < 120) { | ||||||||
| 12262 | if (LHS.get()->getType()->isFloatingType() || | ||||||||
| 12263 | RHS.get()->getType()->isFloatingType()) | ||||||||
| 12264 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12265 | } | ||||||||
| 12266 | |||||||||
| 12267 | LHS = UsualUnaryConversions(LHS.get()); | ||||||||
| 12268 | if (LHS.isInvalid()) | ||||||||
| 12269 | return QualType(); | ||||||||
| 12270 | |||||||||
| 12271 | RHS = UsualUnaryConversions(RHS.get()); | ||||||||
| 12272 | if (RHS.isInvalid()) | ||||||||
| 12273 | return QualType(); | ||||||||
| 12274 | |||||||||
| 12275 | if (!LHS.get()->getType()->isScalarType() || | ||||||||
| 12276 | !RHS.get()->getType()->isScalarType()) | ||||||||
| 12277 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12278 | |||||||||
| 12279 | return Context.IntTy; | ||||||||
| 12280 | } | ||||||||
| 12281 | |||||||||
| 12282 | // The following is safe because we only use this method for | ||||||||
| 12283 | // non-overloadable operands. | ||||||||
| 12284 | |||||||||
| 12285 | // C++ [expr.log.and]p1 | ||||||||
| 12286 | // C++ [expr.log.or]p1 | ||||||||
| 12287 | // The operands are both contextually converted to type bool. | ||||||||
| 12288 | ExprResult LHSRes = PerformContextuallyConvertToBool(LHS.get()); | ||||||||
| 12289 | if (LHSRes.isInvalid()) | ||||||||
| 12290 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12291 | LHS = LHSRes; | ||||||||
| 12292 | |||||||||
| 12293 | ExprResult RHSRes = PerformContextuallyConvertToBool(RHS.get()); | ||||||||
| 12294 | if (RHSRes.isInvalid()) | ||||||||
| 12295 | return InvalidOperands(Loc, LHS, RHS); | ||||||||
| 12296 | RHS = RHSRes; | ||||||||
| 12297 | |||||||||
| 12298 | // C++ [expr.log.and]p2 | ||||||||
| 12299 | // C++ [expr.log.or]p2 | ||||||||
| 12300 | // The result is a bool. | ||||||||
| 12301 | return Context.BoolTy; | ||||||||
| 12302 | } | ||||||||
| 12303 | |||||||||
| 12304 | static bool IsReadonlyMessage(Expr *E, Sema &S) { | ||||||||
| 12305 | const MemberExpr *ME = dyn_cast<MemberExpr>(E); | ||||||||
| 12306 | if (!ME) return false; | ||||||||
| 12307 | if (!isa<FieldDecl>(ME->getMemberDecl())) return false; | ||||||||
| 12308 | ObjCMessageExpr *Base = dyn_cast<ObjCMessageExpr>( | ||||||||
| 12309 | ME->getBase()->IgnoreImplicit()->IgnoreParenImpCasts()); | ||||||||
| 12310 | if (!Base) return false; | ||||||||
| 12311 | return Base->getMethodDecl() != nullptr; | ||||||||
| 12312 | } | ||||||||
| 12313 | |||||||||
| 12314 | /// Is the given expression (which must be 'const') a reference to a | ||||||||
| 12315 | /// variable which was originally non-const, but which has become | ||||||||
| 12316 | /// 'const' due to being captured within a block? | ||||||||
| 12317 | enum NonConstCaptureKind { NCCK_None, NCCK_Block, NCCK_Lambda }; | ||||||||
| 12318 | static NonConstCaptureKind isReferenceToNonConstCapture(Sema &S, Expr *E) { | ||||||||
| 12319 | assert(E->isLValue() && E->getType().isConstQualified())((E->isLValue() && E->getType().isConstQualified ()) ? static_cast<void> (0) : __assert_fail ("E->isLValue() && E->getType().isConstQualified()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12319, __PRETTY_FUNCTION__)); | ||||||||
| 12320 | E = E->IgnoreParens(); | ||||||||
| 12321 | |||||||||
| 12322 | // Must be a reference to a declaration from an enclosing scope. | ||||||||
| 12323 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||||||
| 12324 | if (!DRE) return NCCK_None; | ||||||||
| 12325 | if (!DRE->refersToEnclosingVariableOrCapture()) return NCCK_None; | ||||||||
| 12326 | |||||||||
| 12327 | // The declaration must be a variable which is not declared 'const'. | ||||||||
| 12328 | VarDecl *var = dyn_cast<VarDecl>(DRE->getDecl()); | ||||||||
| 12329 | if (!var) return NCCK_None; | ||||||||
| 12330 | if (var->getType().isConstQualified()) return NCCK_None; | ||||||||
| 12331 | assert(var->hasLocalStorage() && "capture added 'const' to non-local?")((var->hasLocalStorage() && "capture added 'const' to non-local?" ) ? static_cast<void> (0) : __assert_fail ("var->hasLocalStorage() && \"capture added 'const' to non-local?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12331, __PRETTY_FUNCTION__)); | ||||||||
| 12332 | |||||||||
| 12333 | // Decide whether the first capture was for a block or a lambda. | ||||||||
| 12334 | DeclContext *DC = S.CurContext, *Prev = nullptr; | ||||||||
| 12335 | // Decide whether the first capture was for a block or a lambda. | ||||||||
| 12336 | while (DC) { | ||||||||
| 12337 | // For init-capture, it is possible that the variable belongs to the | ||||||||
| 12338 | // template pattern of the current context. | ||||||||
| 12339 | if (auto *FD = dyn_cast<FunctionDecl>(DC)) | ||||||||
| 12340 | if (var->isInitCapture() && | ||||||||
| 12341 | FD->getTemplateInstantiationPattern() == var->getDeclContext()) | ||||||||
| 12342 | break; | ||||||||
| 12343 | if (DC == var->getDeclContext()) | ||||||||
| 12344 | break; | ||||||||
| 12345 | Prev = DC; | ||||||||
| 12346 | DC = DC->getParent(); | ||||||||
| 12347 | } | ||||||||
| 12348 | // Unless we have an init-capture, we've gone one step too far. | ||||||||
| 12349 | if (!var->isInitCapture()) | ||||||||
| 12350 | DC = Prev; | ||||||||
| 12351 | return (isa<BlockDecl>(DC) ? NCCK_Block : NCCK_Lambda); | ||||||||
| 12352 | } | ||||||||
| 12353 | |||||||||
| 12354 | static bool IsTypeModifiable(QualType Ty, bool IsDereference) { | ||||||||
| 12355 | Ty = Ty.getNonReferenceType(); | ||||||||
| 12356 | if (IsDereference && Ty->isPointerType()) | ||||||||
| 12357 | Ty = Ty->getPointeeType(); | ||||||||
| 12358 | return !Ty.isConstQualified(); | ||||||||
| 12359 | } | ||||||||
| 12360 | |||||||||
| 12361 | // Update err_typecheck_assign_const and note_typecheck_assign_const | ||||||||
| 12362 | // when this enum is changed. | ||||||||
| 12363 | enum { | ||||||||
| 12364 | ConstFunction, | ||||||||
| 12365 | ConstVariable, | ||||||||
| 12366 | ConstMember, | ||||||||
| 12367 | ConstMethod, | ||||||||
| 12368 | NestedConstMember, | ||||||||
| 12369 | ConstUnknown, // Keep as last element | ||||||||
| 12370 | }; | ||||||||
| 12371 | |||||||||
| 12372 | /// Emit the "read-only variable not assignable" error and print notes to give | ||||||||
| 12373 | /// more information about why the variable is not assignable, such as pointing | ||||||||
| 12374 | /// to the declaration of a const variable, showing that a method is const, or | ||||||||
| 12375 | /// that the function is returning a const reference. | ||||||||
| 12376 | static void DiagnoseConstAssignment(Sema &S, const Expr *E, | ||||||||
| 12377 | SourceLocation Loc) { | ||||||||
| 12378 | SourceRange ExprRange = E->getSourceRange(); | ||||||||
| 12379 | |||||||||
| 12380 | // Only emit one error on the first const found. All other consts will emit | ||||||||
| 12381 | // a note to the error. | ||||||||
| 12382 | bool DiagnosticEmitted = false; | ||||||||
| 12383 | |||||||||
| 12384 | // Track if the current expression is the result of a dereference, and if the | ||||||||
| 12385 | // next checked expression is the result of a dereference. | ||||||||
| 12386 | bool IsDereference = false; | ||||||||
| 12387 | bool NextIsDereference = false; | ||||||||
| 12388 | |||||||||
| 12389 | // Loop to process MemberExpr chains. | ||||||||
| 12390 | while (true) { | ||||||||
| 12391 | IsDereference = NextIsDereference; | ||||||||
| 12392 | |||||||||
| 12393 | E = E->IgnoreImplicit()->IgnoreParenImpCasts(); | ||||||||
| 12394 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { | ||||||||
| 12395 | NextIsDereference = ME->isArrow(); | ||||||||
| 12396 | const ValueDecl *VD = ME->getMemberDecl(); | ||||||||
| 12397 | if (const FieldDecl *Field = dyn_cast<FieldDecl>(VD)) { | ||||||||
| 12398 | // Mutable fields can be modified even if the class is const. | ||||||||
| 12399 | if (Field->isMutable()) { | ||||||||
| 12400 | assert(DiagnosticEmitted && "Expected diagnostic not emitted.")((DiagnosticEmitted && "Expected diagnostic not emitted." ) ? static_cast<void> (0) : __assert_fail ("DiagnosticEmitted && \"Expected diagnostic not emitted.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12400, __PRETTY_FUNCTION__)); | ||||||||
| 12401 | break; | ||||||||
| 12402 | } | ||||||||
| 12403 | |||||||||
| 12404 | if (!IsTypeModifiable(Field->getType(), IsDereference)) { | ||||||||
| 12405 | if (!DiagnosticEmitted) { | ||||||||
| 12406 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
| 12407 | << ExprRange << ConstMember << false /*static*/ << Field | ||||||||
| 12408 | << Field->getType(); | ||||||||
| 12409 | DiagnosticEmitted = true; | ||||||||
| 12410 | } | ||||||||
| 12411 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
| 12412 | << ConstMember << false /*static*/ << Field << Field->getType() | ||||||||
| 12413 | << Field->getSourceRange(); | ||||||||
| 12414 | } | ||||||||
| 12415 | E = ME->getBase(); | ||||||||
| 12416 | continue; | ||||||||
| 12417 | } else if (const VarDecl *VDecl = dyn_cast<VarDecl>(VD)) { | ||||||||
| 12418 | if (VDecl->getType().isConstQualified()) { | ||||||||
| 12419 | if (!DiagnosticEmitted) { | ||||||||
| 12420 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
| 12421 | << ExprRange << ConstMember << true /*static*/ << VDecl | ||||||||
| 12422 | << VDecl->getType(); | ||||||||
| 12423 | DiagnosticEmitted = true; | ||||||||
| 12424 | } | ||||||||
| 12425 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
| 12426 | << ConstMember << true /*static*/ << VDecl << VDecl->getType() | ||||||||
| 12427 | << VDecl->getSourceRange(); | ||||||||
| 12428 | } | ||||||||
| 12429 | // Static fields do not inherit constness from parents. | ||||||||
| 12430 | break; | ||||||||
| 12431 | } | ||||||||
| 12432 | break; // End MemberExpr | ||||||||
| 12433 | } else if (const ArraySubscriptExpr *ASE = | ||||||||
| 12434 | dyn_cast<ArraySubscriptExpr>(E)) { | ||||||||
| 12435 | E = ASE->getBase()->IgnoreParenImpCasts(); | ||||||||
| 12436 | continue; | ||||||||
| 12437 | } else if (const ExtVectorElementExpr *EVE = | ||||||||
| 12438 | dyn_cast<ExtVectorElementExpr>(E)) { | ||||||||
| 12439 | E = EVE->getBase()->IgnoreParenImpCasts(); | ||||||||
| 12440 | continue; | ||||||||
| 12441 | } | ||||||||
| 12442 | break; | ||||||||
| 12443 | } | ||||||||
| 12444 | |||||||||
| 12445 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { | ||||||||
| 12446 | // Function calls | ||||||||
| 12447 | const FunctionDecl *FD = CE->getDirectCallee(); | ||||||||
| 12448 | if (FD && !IsTypeModifiable(FD->getReturnType(), IsDereference)) { | ||||||||
| 12449 | if (!DiagnosticEmitted) { | ||||||||
| 12450 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange | ||||||||
| 12451 | << ConstFunction << FD; | ||||||||
| 12452 | DiagnosticEmitted = true; | ||||||||
| 12453 | } | ||||||||
| 12454 | S.Diag(FD->getReturnTypeSourceRange().getBegin(), | ||||||||
| 12455 | diag::note_typecheck_assign_const) | ||||||||
| 12456 | << ConstFunction << FD << FD->getReturnType() | ||||||||
| 12457 | << FD->getReturnTypeSourceRange(); | ||||||||
| 12458 | } | ||||||||
| 12459 | } else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||||||
| 12460 | // Point to variable declaration. | ||||||||
| 12461 | if (const ValueDecl *VD = DRE->getDecl()) { | ||||||||
| 12462 | if (!IsTypeModifiable(VD->getType(), IsDereference)) { | ||||||||
| 12463 | if (!DiagnosticEmitted) { | ||||||||
| 12464 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
| 12465 | << ExprRange << ConstVariable << VD << VD->getType(); | ||||||||
| 12466 | DiagnosticEmitted = true; | ||||||||
| 12467 | } | ||||||||
| 12468 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
| 12469 | << ConstVariable << VD << VD->getType() << VD->getSourceRange(); | ||||||||
| 12470 | } | ||||||||
| 12471 | } | ||||||||
| 12472 | } else if (isa<CXXThisExpr>(E)) { | ||||||||
| 12473 | if (const DeclContext *DC = S.getFunctionLevelDeclContext()) { | ||||||||
| 12474 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(DC)) { | ||||||||
| 12475 | if (MD->isConst()) { | ||||||||
| 12476 | if (!DiagnosticEmitted) { | ||||||||
| 12477 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange | ||||||||
| 12478 | << ConstMethod << MD; | ||||||||
| 12479 | DiagnosticEmitted = true; | ||||||||
| 12480 | } | ||||||||
| 12481 | S.Diag(MD->getLocation(), diag::note_typecheck_assign_const) | ||||||||
| 12482 | << ConstMethod << MD << MD->getSourceRange(); | ||||||||
| 12483 | } | ||||||||
| 12484 | } | ||||||||
| 12485 | } | ||||||||
| 12486 | } | ||||||||
| 12487 | |||||||||
| 12488 | if (DiagnosticEmitted) | ||||||||
| 12489 | return; | ||||||||
| 12490 | |||||||||
| 12491 | // Can't determine a more specific message, so display the generic error. | ||||||||
| 12492 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange << ConstUnknown; | ||||||||
| 12493 | } | ||||||||
| 12494 | |||||||||
| 12495 | enum OriginalExprKind { | ||||||||
| 12496 | OEK_Variable, | ||||||||
| 12497 | OEK_Member, | ||||||||
| 12498 | OEK_LValue | ||||||||
| 12499 | }; | ||||||||
| 12500 | |||||||||
| 12501 | static void DiagnoseRecursiveConstFields(Sema &S, const ValueDecl *VD, | ||||||||
| 12502 | const RecordType *Ty, | ||||||||
| 12503 | SourceLocation Loc, SourceRange Range, | ||||||||
| 12504 | OriginalExprKind OEK, | ||||||||
| 12505 | bool &DiagnosticEmitted) { | ||||||||
| 12506 | std::vector<const RecordType *> RecordTypeList; | ||||||||
| 12507 | RecordTypeList.push_back(Ty); | ||||||||
| 12508 | unsigned NextToCheckIndex = 0; | ||||||||
| 12509 | // We walk the record hierarchy breadth-first to ensure that we print | ||||||||
| 12510 | // diagnostics in field nesting order. | ||||||||
| 12511 | while (RecordTypeList.size() > NextToCheckIndex) { | ||||||||
| 12512 | bool IsNested = NextToCheckIndex > 0; | ||||||||
| 12513 | for (const FieldDecl *Field : | ||||||||
| 12514 | RecordTypeList[NextToCheckIndex]->getDecl()->fields()) { | ||||||||
| 12515 | // First, check every field for constness. | ||||||||
| 12516 | QualType FieldTy = Field->getType(); | ||||||||
| 12517 | if (FieldTy.isConstQualified()) { | ||||||||
| 12518 | if (!DiagnosticEmitted) { | ||||||||
| 12519 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||||||
| 12520 | << Range << NestedConstMember << OEK << VD | ||||||||
| 12521 | << IsNested << Field; | ||||||||
| 12522 | DiagnosticEmitted = true; | ||||||||
| 12523 | } | ||||||||
| 12524 | S.Diag(Field->getLocation(), diag::note_typecheck_assign_const) | ||||||||
| 12525 | << NestedConstMember << IsNested << Field | ||||||||
| 12526 | << FieldTy << Field->getSourceRange(); | ||||||||
| 12527 | } | ||||||||
| 12528 | |||||||||
| 12529 | // Then we append it to the list to check next in order. | ||||||||
| 12530 | FieldTy = FieldTy.getCanonicalType(); | ||||||||
| 12531 | if (const auto *FieldRecTy = FieldTy->getAs<RecordType>()) { | ||||||||
| 12532 | if (llvm::find(RecordTypeList, FieldRecTy) == RecordTypeList.end()) | ||||||||
| 12533 | RecordTypeList.push_back(FieldRecTy); | ||||||||
| 12534 | } | ||||||||
| 12535 | } | ||||||||
| 12536 | ++NextToCheckIndex; | ||||||||
| 12537 | } | ||||||||
| 12538 | } | ||||||||
| 12539 | |||||||||
| 12540 | /// Emit an error for the case where a record we are trying to assign to has a | ||||||||
| 12541 | /// const-qualified field somewhere in its hierarchy. | ||||||||
| 12542 | static void DiagnoseRecursiveConstFields(Sema &S, const Expr *E, | ||||||||
| 12543 | SourceLocation Loc) { | ||||||||
| 12544 | QualType Ty = E->getType(); | ||||||||
| 12545 | assert(Ty->isRecordType() && "lvalue was not record?")((Ty->isRecordType() && "lvalue was not record?") ? static_cast<void> (0) : __assert_fail ("Ty->isRecordType() && \"lvalue was not record?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12545, __PRETTY_FUNCTION__)); | ||||||||
| 12546 | SourceRange Range = E->getSourceRange(); | ||||||||
| 12547 | const RecordType *RTy = Ty.getCanonicalType()->getAs<RecordType>(); | ||||||||
| 12548 | bool DiagEmitted = false; | ||||||||
| 12549 | |||||||||
| 12550 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) | ||||||||
| 12551 | DiagnoseRecursiveConstFields(S, ME->getMemberDecl(), RTy, Loc, | ||||||||
| 12552 | Range, OEK_Member, DiagEmitted); | ||||||||
| 12553 | else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
| 12554 | DiagnoseRecursiveConstFields(S, DRE->getDecl(), RTy, Loc, | ||||||||
| 12555 | Range, OEK_Variable, DiagEmitted); | ||||||||
| 12556 | else | ||||||||
| 12557 | DiagnoseRecursiveConstFields(S, nullptr, RTy, Loc, | ||||||||
| 12558 | Range, OEK_LValue, DiagEmitted); | ||||||||
| 12559 | if (!DiagEmitted) | ||||||||
| 12560 | DiagnoseConstAssignment(S, E, Loc); | ||||||||
| 12561 | } | ||||||||
| 12562 | |||||||||
| 12563 | /// CheckForModifiableLvalue - Verify that E is a modifiable lvalue. If not, | ||||||||
| 12564 | /// emit an error and return true. If so, return false. | ||||||||
| 12565 | static bool CheckForModifiableLvalue(Expr *E, SourceLocation Loc, Sema &S) { | ||||||||
| 12566 | assert(!E->hasPlaceholderType(BuiltinType::PseudoObject))((!E->hasPlaceholderType(BuiltinType::PseudoObject)) ? static_cast <void> (0) : __assert_fail ("!E->hasPlaceholderType(BuiltinType::PseudoObject)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12566, __PRETTY_FUNCTION__)); | ||||||||
| 12567 | |||||||||
| 12568 | S.CheckShadowingDeclModification(E, Loc); | ||||||||
| 12569 | |||||||||
| 12570 | SourceLocation OrigLoc = Loc; | ||||||||
| 12571 | Expr::isModifiableLvalueResult IsLV = E->isModifiableLvalue(S.Context, | ||||||||
| 12572 | &Loc); | ||||||||
| 12573 | if (IsLV == Expr::MLV_ClassTemporary && IsReadonlyMessage(E, S)) | ||||||||
| 12574 | IsLV = Expr::MLV_InvalidMessageExpression; | ||||||||
| 12575 | if (IsLV == Expr::MLV_Valid) | ||||||||
| 12576 | return false; | ||||||||
| 12577 | |||||||||
| 12578 | unsigned DiagID = 0; | ||||||||
| 12579 | bool NeedType = false; | ||||||||
| 12580 | switch (IsLV) { // C99 6.5.16p2 | ||||||||
| 12581 | case Expr::MLV_ConstQualified: | ||||||||
| 12582 | // Use a specialized diagnostic when we're assigning to an object | ||||||||
| 12583 | // from an enclosing function or block. | ||||||||
| 12584 | if (NonConstCaptureKind NCCK = isReferenceToNonConstCapture(S, E)) { | ||||||||
| 12585 | if (NCCK == NCCK_Block) | ||||||||
| 12586 | DiagID = diag::err_block_decl_ref_not_modifiable_lvalue; | ||||||||
| 12587 | else | ||||||||
| 12588 | DiagID = diag::err_lambda_decl_ref_not_modifiable_lvalue; | ||||||||
| 12589 | break; | ||||||||
| 12590 | } | ||||||||
| 12591 | |||||||||
| 12592 | // In ARC, use some specialized diagnostics for occasions where we | ||||||||
| 12593 | // infer 'const'. These are always pseudo-strong variables. | ||||||||
| 12594 | if (S.getLangOpts().ObjCAutoRefCount) { | ||||||||
| 12595 | DeclRefExpr *declRef = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts()); | ||||||||
| 12596 | if (declRef && isa<VarDecl>(declRef->getDecl())) { | ||||||||
| 12597 | VarDecl *var = cast<VarDecl>(declRef->getDecl()); | ||||||||
| 12598 | |||||||||
| 12599 | // Use the normal diagnostic if it's pseudo-__strong but the | ||||||||
| 12600 | // user actually wrote 'const'. | ||||||||
| 12601 | if (var->isARCPseudoStrong() && | ||||||||
| 12602 | (!var->getTypeSourceInfo() || | ||||||||
| 12603 | !var->getTypeSourceInfo()->getType().isConstQualified())) { | ||||||||
| 12604 | // There are three pseudo-strong cases: | ||||||||
| 12605 | // - self | ||||||||
| 12606 | ObjCMethodDecl *method = S.getCurMethodDecl(); | ||||||||
| 12607 | if (method && var == method->getSelfDecl()) { | ||||||||
| 12608 | DiagID = method->isClassMethod() | ||||||||
| 12609 | ? diag::err_typecheck_arc_assign_self_class_method | ||||||||
| 12610 | : diag::err_typecheck_arc_assign_self; | ||||||||
| 12611 | |||||||||
| 12612 | // - Objective-C externally_retained attribute. | ||||||||
| 12613 | } else if (var->hasAttr<ObjCExternallyRetainedAttr>() || | ||||||||
| 12614 | isa<ParmVarDecl>(var)) { | ||||||||
| 12615 | DiagID = diag::err_typecheck_arc_assign_externally_retained; | ||||||||
| 12616 | |||||||||
| 12617 | // - fast enumeration variables | ||||||||
| 12618 | } else { | ||||||||
| 12619 | DiagID = diag::err_typecheck_arr_assign_enumeration; | ||||||||
| 12620 | } | ||||||||
| 12621 | |||||||||
| 12622 | SourceRange Assign; | ||||||||
| 12623 | if (Loc != OrigLoc) | ||||||||
| 12624 | Assign = SourceRange(OrigLoc, OrigLoc); | ||||||||
| 12625 | S.Diag(Loc, DiagID) << E->getSourceRange() << Assign; | ||||||||
| 12626 | // We need to preserve the AST regardless, so migration tool | ||||||||
| 12627 | // can do its job. | ||||||||
| 12628 | return false; | ||||||||
| 12629 | } | ||||||||
| 12630 | } | ||||||||
| 12631 | } | ||||||||
| 12632 | |||||||||
| 12633 | // If none of the special cases above are triggered, then this is a | ||||||||
| 12634 | // simple const assignment. | ||||||||
| 12635 | if (DiagID == 0) { | ||||||||
| 12636 | DiagnoseConstAssignment(S, E, Loc); | ||||||||
| 12637 | return true; | ||||||||
| 12638 | } | ||||||||
| 12639 | |||||||||
| 12640 | break; | ||||||||
| 12641 | case Expr::MLV_ConstAddrSpace: | ||||||||
| 12642 | DiagnoseConstAssignment(S, E, Loc); | ||||||||
| 12643 | return true; | ||||||||
| 12644 | case Expr::MLV_ConstQualifiedField: | ||||||||
| 12645 | DiagnoseRecursiveConstFields(S, E, Loc); | ||||||||
| 12646 | return true; | ||||||||
| 12647 | case Expr::MLV_ArrayType: | ||||||||
| 12648 | case Expr::MLV_ArrayTemporary: | ||||||||
| 12649 | DiagID = diag::err_typecheck_array_not_modifiable_lvalue; | ||||||||
| 12650 | NeedType = true; | ||||||||
| 12651 | break; | ||||||||
| 12652 | case Expr::MLV_NotObjectType: | ||||||||
| 12653 | DiagID = diag::err_typecheck_non_object_not_modifiable_lvalue; | ||||||||
| 12654 | NeedType = true; | ||||||||
| 12655 | break; | ||||||||
| 12656 | case Expr::MLV_LValueCast: | ||||||||
| 12657 | DiagID = diag::err_typecheck_lvalue_casts_not_supported; | ||||||||
| 12658 | break; | ||||||||
| 12659 | case Expr::MLV_Valid: | ||||||||
| 12660 | 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12660); | ||||||||
| 12661 | case Expr::MLV_InvalidExpression: | ||||||||
| 12662 | case Expr::MLV_MemberFunction: | ||||||||
| 12663 | case Expr::MLV_ClassTemporary: | ||||||||
| 12664 | DiagID = diag::err_typecheck_expression_not_modifiable_lvalue; | ||||||||
| 12665 | break; | ||||||||
| 12666 | case Expr::MLV_IncompleteType: | ||||||||
| 12667 | case Expr::MLV_IncompleteVoidType: | ||||||||
| 12668 | return S.RequireCompleteType(Loc, E->getType(), | ||||||||
| 12669 | diag::err_typecheck_incomplete_type_not_modifiable_lvalue, E); | ||||||||
| 12670 | case Expr::MLV_DuplicateVectorComponents: | ||||||||
| 12671 | DiagID = diag::err_typecheck_duplicate_vector_components_not_mlvalue; | ||||||||
| 12672 | break; | ||||||||
| 12673 | case Expr::MLV_NoSetterProperty: | ||||||||
| 12674 | llvm_unreachable("readonly properties should be processed differently")::llvm::llvm_unreachable_internal("readonly properties should be processed differently" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12674); | ||||||||
| 12675 | case Expr::MLV_InvalidMessageExpression: | ||||||||
| 12676 | DiagID = diag::err_readonly_message_assignment; | ||||||||
| 12677 | break; | ||||||||
| 12678 | case Expr::MLV_SubObjCPropertySetting: | ||||||||
| 12679 | DiagID = diag::err_no_subobject_property_setting; | ||||||||
| 12680 | break; | ||||||||
| 12681 | } | ||||||||
| 12682 | |||||||||
| 12683 | SourceRange Assign; | ||||||||
| 12684 | if (Loc != OrigLoc) | ||||||||
| 12685 | Assign = SourceRange(OrigLoc, OrigLoc); | ||||||||
| 12686 | if (NeedType) | ||||||||
| 12687 | S.Diag(Loc, DiagID) << E->getType() << E->getSourceRange() << Assign; | ||||||||
| 12688 | else | ||||||||
| 12689 | S.Diag(Loc, DiagID) << E->getSourceRange() << Assign; | ||||||||
| 12690 | return true; | ||||||||
| 12691 | } | ||||||||
| 12692 | |||||||||
| 12693 | static void CheckIdentityFieldAssignment(Expr *LHSExpr, Expr *RHSExpr, | ||||||||
| 12694 | SourceLocation Loc, | ||||||||
| 12695 | Sema &Sema) { | ||||||||
| 12696 | if (Sema.inTemplateInstantiation()) | ||||||||
| 12697 | return; | ||||||||
| 12698 | if (Sema.isUnevaluatedContext()) | ||||||||
| 12699 | return; | ||||||||
| 12700 | if (Loc.isInvalid() || Loc.isMacroID()) | ||||||||
| 12701 | return; | ||||||||
| 12702 | if (LHSExpr->getExprLoc().isMacroID() || RHSExpr->getExprLoc().isMacroID()) | ||||||||
| 12703 | return; | ||||||||
| 12704 | |||||||||
| 12705 | // C / C++ fields | ||||||||
| 12706 | MemberExpr *ML = dyn_cast<MemberExpr>(LHSExpr); | ||||||||
| 12707 | MemberExpr *MR = dyn_cast<MemberExpr>(RHSExpr); | ||||||||
| 12708 | if (ML && MR) { | ||||||||
| 12709 | if (!(isa<CXXThisExpr>(ML->getBase()) && isa<CXXThisExpr>(MR->getBase()))) | ||||||||
| 12710 | return; | ||||||||
| 12711 | const ValueDecl *LHSDecl = | ||||||||
| 12712 | cast<ValueDecl>(ML->getMemberDecl()->getCanonicalDecl()); | ||||||||
| 12713 | const ValueDecl *RHSDecl = | ||||||||
| 12714 | cast<ValueDecl>(MR->getMemberDecl()->getCanonicalDecl()); | ||||||||
| 12715 | if (LHSDecl != RHSDecl) | ||||||||
| 12716 | return; | ||||||||
| 12717 | if (LHSDecl->getType().isVolatileQualified()) | ||||||||
| 12718 | return; | ||||||||
| 12719 | if (const ReferenceType *RefTy = LHSDecl->getType()->getAs<ReferenceType>()) | ||||||||
| 12720 | if (RefTy->getPointeeType().isVolatileQualified()) | ||||||||
| 12721 | return; | ||||||||
| 12722 | |||||||||
| 12723 | Sema.Diag(Loc, diag::warn_identity_field_assign) << 0; | ||||||||
| 12724 | } | ||||||||
| 12725 | |||||||||
| 12726 | // Objective-C instance variables | ||||||||
| 12727 | ObjCIvarRefExpr *OL = dyn_cast<ObjCIvarRefExpr>(LHSExpr); | ||||||||
| 12728 | ObjCIvarRefExpr *OR = dyn_cast<ObjCIvarRefExpr>(RHSExpr); | ||||||||
| 12729 | if (OL && OR && OL->getDecl() == OR->getDecl()) { | ||||||||
| 12730 | DeclRefExpr *RL = dyn_cast<DeclRefExpr>(OL->getBase()->IgnoreImpCasts()); | ||||||||
| 12731 | DeclRefExpr *RR = dyn_cast<DeclRefExpr>(OR->getBase()->IgnoreImpCasts()); | ||||||||
| 12732 | if (RL && RR && RL->getDecl() == RR->getDecl()) | ||||||||
| 12733 | Sema.Diag(Loc, diag::warn_identity_field_assign) << 1; | ||||||||
| 12734 | } | ||||||||
| 12735 | } | ||||||||
| 12736 | |||||||||
| 12737 | // C99 6.5.16.1 | ||||||||
| 12738 | QualType Sema::CheckAssignmentOperands(Expr *LHSExpr, ExprResult &RHS, | ||||||||
| 12739 | SourceLocation Loc, | ||||||||
| 12740 | QualType CompoundType) { | ||||||||
| 12741 | assert(!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject))((!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject)) ? static_cast<void> (0) : __assert_fail ("!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12741, __PRETTY_FUNCTION__)); | ||||||||
| 12742 | |||||||||
| 12743 | // Verify that LHS is a modifiable lvalue, and emit error if not. | ||||||||
| 12744 | if (CheckForModifiableLvalue(LHSExpr, Loc, *this)) | ||||||||
| 12745 | return QualType(); | ||||||||
| 12746 | |||||||||
| 12747 | QualType LHSType = LHSExpr->getType(); | ||||||||
| 12748 | QualType RHSType = CompoundType.isNull() ? RHS.get()->getType() : | ||||||||
| 12749 | CompoundType; | ||||||||
| 12750 | // OpenCL v1.2 s6.1.1.1 p2: | ||||||||
| 12751 | // The half data type can only be used to declare a pointer to a buffer that | ||||||||
| 12752 | // contains half values | ||||||||
| 12753 | if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp16") && | ||||||||
| 12754 | LHSType->isHalfType()) { | ||||||||
| 12755 | Diag(Loc, diag::err_opencl_half_load_store) << 1 | ||||||||
| 12756 | << LHSType.getUnqualifiedType(); | ||||||||
| 12757 | return QualType(); | ||||||||
| 12758 | } | ||||||||
| 12759 | |||||||||
| 12760 | AssignConvertType ConvTy; | ||||||||
| 12761 | if (CompoundType.isNull()) { | ||||||||
| 12762 | Expr *RHSCheck = RHS.get(); | ||||||||
| 12763 | |||||||||
| 12764 | CheckIdentityFieldAssignment(LHSExpr, RHSCheck, Loc, *this); | ||||||||
| 12765 | |||||||||
| 12766 | QualType LHSTy(LHSType); | ||||||||
| 12767 | ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); | ||||||||
| 12768 | if (RHS.isInvalid()) | ||||||||
| 12769 | return QualType(); | ||||||||
| 12770 | // Special case of NSObject attributes on c-style pointer types. | ||||||||
| 12771 | if (ConvTy == IncompatiblePointer && | ||||||||
| 12772 | ((Context.isObjCNSObjectType(LHSType) && | ||||||||
| 12773 | RHSType->isObjCObjectPointerType()) || | ||||||||
| 12774 | (Context.isObjCNSObjectType(RHSType) && | ||||||||
| 12775 | LHSType->isObjCObjectPointerType()))) | ||||||||
| 12776 | ConvTy = Compatible; | ||||||||
| 12777 | |||||||||
| 12778 | if (ConvTy == Compatible && | ||||||||
| 12779 | LHSType->isObjCObjectType()) | ||||||||
| 12780 | Diag(Loc, diag::err_objc_object_assignment) | ||||||||
| 12781 | << LHSType; | ||||||||
| 12782 | |||||||||
| 12783 | // If the RHS is a unary plus or minus, check to see if they = and + are | ||||||||
| 12784 | // right next to each other. If so, the user may have typo'd "x =+ 4" | ||||||||
| 12785 | // instead of "x += 4". | ||||||||
| 12786 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(RHSCheck)) | ||||||||
| 12787 | RHSCheck = ICE->getSubExpr(); | ||||||||
| 12788 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(RHSCheck)) { | ||||||||
| 12789 | if ((UO->getOpcode() == UO_Plus || UO->getOpcode() == UO_Minus) && | ||||||||
| 12790 | Loc.isFileID() && UO->getOperatorLoc().isFileID() && | ||||||||
| 12791 | // Only if the two operators are exactly adjacent. | ||||||||
| 12792 | Loc.getLocWithOffset(1) == UO->getOperatorLoc() && | ||||||||
| 12793 | // And there is a space or other character before the subexpr of the | ||||||||
| 12794 | // unary +/-. We don't want to warn on "x=-1". | ||||||||
| 12795 | Loc.getLocWithOffset(2) != UO->getSubExpr()->getBeginLoc() && | ||||||||
| 12796 | UO->getSubExpr()->getBeginLoc().isFileID()) { | ||||||||
| 12797 | Diag(Loc, diag::warn_not_compound_assign) | ||||||||
| 12798 | << (UO->getOpcode() == UO_Plus ? "+" : "-") | ||||||||
| 12799 | << SourceRange(UO->getOperatorLoc(), UO->getOperatorLoc()); | ||||||||
| 12800 | } | ||||||||
| 12801 | } | ||||||||
| 12802 | |||||||||
| 12803 | if (ConvTy == Compatible) { | ||||||||
| 12804 | if (LHSType.getObjCLifetime() == Qualifiers::OCL_Strong) { | ||||||||
| 12805 | // Warn about retain cycles where a block captures the LHS, but | ||||||||
| 12806 | // not if the LHS is a simple variable into which the block is | ||||||||
| 12807 | // being stored...unless that variable can be captured by reference! | ||||||||
| 12808 | const Expr *InnerLHS = LHSExpr->IgnoreParenCasts(); | ||||||||
| 12809 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(InnerLHS); | ||||||||
| 12810 | if (!DRE || DRE->getDecl()->hasAttr<BlocksAttr>()) | ||||||||
| 12811 | checkRetainCycles(LHSExpr, RHS.get()); | ||||||||
| 12812 | } | ||||||||
| 12813 | |||||||||
| 12814 | if (LHSType.getObjCLifetime() == Qualifiers::OCL_Strong || | ||||||||
| 12815 | LHSType.isNonWeakInMRRWithObjCWeak(Context)) { | ||||||||
| 12816 | // It is safe to assign a weak reference into a strong variable. | ||||||||
| 12817 | // Although this code can still have problems: | ||||||||
| 12818 | // id x = self.weakProp; | ||||||||
| 12819 | // id y = self.weakProp; | ||||||||
| 12820 | // we do not warn to warn spuriously when 'x' and 'y' are on separate | ||||||||
| 12821 | // paths through the function. This should be revisited if | ||||||||
| 12822 | // -Wrepeated-use-of-weak is made flow-sensitive. | ||||||||
| 12823 | // For ObjCWeak only, we do not warn if the assign is to a non-weak | ||||||||
| 12824 | // variable, which will be valid for the current autorelease scope. | ||||||||
| 12825 | if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, | ||||||||
| 12826 | RHS.get()->getBeginLoc())) | ||||||||
| 12827 | getCurFunction()->markSafeWeakUse(RHS.get()); | ||||||||
| 12828 | |||||||||
| 12829 | } else if (getLangOpts().ObjCAutoRefCount || getLangOpts().ObjCWeak) { | ||||||||
| 12830 | checkUnsafeExprAssigns(Loc, LHSExpr, RHS.get()); | ||||||||
| 12831 | } | ||||||||
| 12832 | } | ||||||||
| 12833 | } else { | ||||||||
| 12834 | // Compound assignment "x += y" | ||||||||
| 12835 | ConvTy = CheckAssignmentConstraints(Loc, LHSType, RHSType); | ||||||||
| 12836 | } | ||||||||
| 12837 | |||||||||
| 12838 | if (DiagnoseAssignmentResult(ConvTy, Loc, LHSType, RHSType, | ||||||||
| 12839 | RHS.get(), AA_Assigning)) | ||||||||
| 12840 | return QualType(); | ||||||||
| 12841 | |||||||||
| 12842 | CheckForNullPointerDereference(*this, LHSExpr); | ||||||||
| 12843 | |||||||||
| 12844 | if (getLangOpts().CPlusPlus20 && LHSType.isVolatileQualified()) { | ||||||||
| 12845 | if (CompoundType.isNull()) { | ||||||||
| 12846 | // C++2a [expr.ass]p5: | ||||||||
| 12847 | // A simple-assignment whose left operand is of a volatile-qualified | ||||||||
| 12848 | // type is deprecated unless the assignment is either a discarded-value | ||||||||
| 12849 | // expression or an unevaluated operand | ||||||||
| 12850 | ExprEvalContexts.back().VolatileAssignmentLHSs.push_back(LHSExpr); | ||||||||
| 12851 | } else { | ||||||||
| 12852 | // C++2a [expr.ass]p6: | ||||||||
| 12853 | // [Compound-assignment] expressions are deprecated if E1 has | ||||||||
| 12854 | // volatile-qualified type | ||||||||
| 12855 | Diag(Loc, diag::warn_deprecated_compound_assign_volatile) << LHSType; | ||||||||
| 12856 | } | ||||||||
| 12857 | } | ||||||||
| 12858 | |||||||||
| 12859 | // C99 6.5.16p3: The type of an assignment expression is the type of the | ||||||||
| 12860 | // left operand unless the left operand has qualified type, in which case | ||||||||
| 12861 | // it is the unqualified version of the type of the left operand. | ||||||||
| 12862 | // C99 6.5.16.1p2: In simple assignment, the value of the right operand | ||||||||
| 12863 | // is converted to the type of the assignment expression (above). | ||||||||
| 12864 | // C++ 5.17p1: the type of the assignment expression is that of its left | ||||||||
| 12865 | // operand. | ||||||||
| 12866 | return (getLangOpts().CPlusPlus | ||||||||
| 12867 | ? LHSType : LHSType.getUnqualifiedType()); | ||||||||
| 12868 | } | ||||||||
| 12869 | |||||||||
| 12870 | // Only ignore explicit casts to void. | ||||||||
| 12871 | static bool IgnoreCommaOperand(const Expr *E) { | ||||||||
| 12872 | E = E->IgnoreParens(); | ||||||||
| 12873 | |||||||||
| 12874 | if (const CastExpr *CE = dyn_cast<CastExpr>(E)) { | ||||||||
| 12875 | if (CE->getCastKind() == CK_ToVoid) { | ||||||||
| 12876 | return true; | ||||||||
| 12877 | } | ||||||||
| 12878 | |||||||||
| 12879 | // static_cast<void> on a dependent type will not show up as CK_ToVoid. | ||||||||
| 12880 | if (CE->getCastKind() == CK_Dependent && E->getType()->isVoidType() && | ||||||||
| 12881 | CE->getSubExpr()->getType()->isDependentType()) { | ||||||||
| 12882 | return true; | ||||||||
| 12883 | } | ||||||||
| 12884 | } | ||||||||
| 12885 | |||||||||
| 12886 | return false; | ||||||||
| 12887 | } | ||||||||
| 12888 | |||||||||
| 12889 | // Look for instances where it is likely the comma operator is confused with | ||||||||
| 12890 | // another operator. There is an explicit list of acceptable expressions for | ||||||||
| 12891 | // the left hand side of the comma operator, otherwise emit a warning. | ||||||||
| 12892 | void Sema::DiagnoseCommaOperator(const Expr *LHS, SourceLocation Loc) { | ||||||||
| 12893 | // No warnings in macros | ||||||||
| 12894 | if (Loc.isMacroID()) | ||||||||
| 12895 | return; | ||||||||
| 12896 | |||||||||
| 12897 | // Don't warn in template instantiations. | ||||||||
| 12898 | if (inTemplateInstantiation()) | ||||||||
| 12899 | return; | ||||||||
| 12900 | |||||||||
| 12901 | // Scope isn't fine-grained enough to explicitly list the specific cases, so | ||||||||
| 12902 | // instead, skip more than needed, then call back into here with the | ||||||||
| 12903 | // CommaVisitor in SemaStmt.cpp. | ||||||||
| 12904 | // The listed locations are the initialization and increment portions | ||||||||
| 12905 | // of a for loop. The additional checks are on the condition of | ||||||||
| 12906 | // if statements, do/while loops, and for loops. | ||||||||
| 12907 | // Differences in scope flags for C89 mode requires the extra logic. | ||||||||
| 12908 | const unsigned ForIncrementFlags = | ||||||||
| 12909 | getLangOpts().C99 || getLangOpts().CPlusPlus | ||||||||
| 12910 | ? Scope::ControlScope | Scope::ContinueScope | Scope::BreakScope | ||||||||
| 12911 | : Scope::ContinueScope | Scope::BreakScope; | ||||||||
| 12912 | const unsigned ForInitFlags = Scope::ControlScope | Scope::DeclScope; | ||||||||
| 12913 | const unsigned ScopeFlags = getCurScope()->getFlags(); | ||||||||
| 12914 | if ((ScopeFlags & ForIncrementFlags) == ForIncrementFlags || | ||||||||
| 12915 | (ScopeFlags & ForInitFlags) == ForInitFlags) | ||||||||
| 12916 | return; | ||||||||
| 12917 | |||||||||
| 12918 | // If there are multiple comma operators used together, get the RHS of the | ||||||||
| 12919 | // of the comma operator as the LHS. | ||||||||
| 12920 | while (const BinaryOperator *BO = dyn_cast<BinaryOperator>(LHS)) { | ||||||||
| 12921 | if (BO->getOpcode() != BO_Comma) | ||||||||
| 12922 | break; | ||||||||
| 12923 | LHS = BO->getRHS(); | ||||||||
| 12924 | } | ||||||||
| 12925 | |||||||||
| 12926 | // Only allow some expressions on LHS to not warn. | ||||||||
| 12927 | if (IgnoreCommaOperand(LHS)) | ||||||||
| 12928 | return; | ||||||||
| 12929 | |||||||||
| 12930 | Diag(Loc, diag::warn_comma_operator); | ||||||||
| 12931 | Diag(LHS->getBeginLoc(), diag::note_cast_to_void) | ||||||||
| 12932 | << LHS->getSourceRange() | ||||||||
| 12933 | << FixItHint::CreateInsertion(LHS->getBeginLoc(), | ||||||||
| 12934 | LangOpts.CPlusPlus ? "static_cast<void>(" | ||||||||
| 12935 | : "(void)(") | ||||||||
| 12936 | << FixItHint::CreateInsertion(PP.getLocForEndOfToken(LHS->getEndLoc()), | ||||||||
| 12937 | ")"); | ||||||||
| 12938 | } | ||||||||
| 12939 | |||||||||
| 12940 | // C99 6.5.17 | ||||||||
| 12941 | static QualType CheckCommaOperands(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||||||
| 12942 | SourceLocation Loc) { | ||||||||
| 12943 | LHS = S.CheckPlaceholderExpr(LHS.get()); | ||||||||
| 12944 | RHS = S.CheckPlaceholderExpr(RHS.get()); | ||||||||
| 12945 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 12946 | return QualType(); | ||||||||
| 12947 | |||||||||
| 12948 | // C's comma performs lvalue conversion (C99 6.3.2.1) on both its | ||||||||
| 12949 | // operands, but not unary promotions. | ||||||||
| 12950 | // C++'s comma does not do any conversions at all (C++ [expr.comma]p1). | ||||||||
| 12951 | |||||||||
| 12952 | // So we treat the LHS as a ignored value, and in C++ we allow the | ||||||||
| 12953 | // containing site to determine what should be done with the RHS. | ||||||||
| 12954 | LHS = S.IgnoredValueConversions(LHS.get()); | ||||||||
| 12955 | if (LHS.isInvalid()) | ||||||||
| 12956 | return QualType(); | ||||||||
| 12957 | |||||||||
| 12958 | S.DiagnoseUnusedExprResult(LHS.get()); | ||||||||
| 12959 | |||||||||
| 12960 | if (!S.getLangOpts().CPlusPlus) { | ||||||||
| 12961 | RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||||||
| 12962 | if (RHS.isInvalid()) | ||||||||
| 12963 | return QualType(); | ||||||||
| 12964 | if (!RHS.get()->getType()->isVoidType()) | ||||||||
| 12965 | S.RequireCompleteType(Loc, RHS.get()->getType(), | ||||||||
| 12966 | diag::err_incomplete_type); | ||||||||
| 12967 | } | ||||||||
| 12968 | |||||||||
| 12969 | if (!S.getDiagnostics().isIgnored(diag::warn_comma_operator, Loc)) | ||||||||
| 12970 | S.DiagnoseCommaOperator(LHS.get(), Loc); | ||||||||
| 12971 | |||||||||
| 12972 | return RHS.get()->getType(); | ||||||||
| 12973 | } | ||||||||
| 12974 | |||||||||
| 12975 | /// CheckIncrementDecrementOperand - unlike most "Check" methods, this routine | ||||||||
| 12976 | /// doesn't need to call UsualUnaryConversions or UsualArithmeticConversions. | ||||||||
| 12977 | static QualType CheckIncrementDecrementOperand(Sema &S, Expr *Op, | ||||||||
| 12978 | ExprValueKind &VK, | ||||||||
| 12979 | ExprObjectKind &OK, | ||||||||
| 12980 | SourceLocation OpLoc, | ||||||||
| 12981 | bool IsInc, bool IsPrefix) { | ||||||||
| 12982 | if (Op->isTypeDependent()) | ||||||||
| 12983 | return S.Context.DependentTy; | ||||||||
| 12984 | |||||||||
| 12985 | QualType ResType = Op->getType(); | ||||||||
| 12986 | // Atomic types can be used for increment / decrement where the non-atomic | ||||||||
| 12987 | // versions can, so ignore the _Atomic() specifier for the purpose of | ||||||||
| 12988 | // checking. | ||||||||
| 12989 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||||||
| 12990 | ResType = ResAtomicType->getValueType(); | ||||||||
| 12991 | |||||||||
| 12992 | assert(!ResType.isNull() && "no type for increment/decrement expression")((!ResType.isNull() && "no type for increment/decrement expression" ) ? static_cast<void> (0) : __assert_fail ("!ResType.isNull() && \"no type for increment/decrement expression\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 12992, __PRETTY_FUNCTION__)); | ||||||||
| 12993 | |||||||||
| 12994 | if (S.getLangOpts().CPlusPlus && ResType->isBooleanType()) { | ||||||||
| 12995 | // Decrement of bool is not allowed. | ||||||||
| 12996 | if (!IsInc) { | ||||||||
| 12997 | S.Diag(OpLoc, diag::err_decrement_bool) << Op->getSourceRange(); | ||||||||
| 12998 | return QualType(); | ||||||||
| 12999 | } | ||||||||
| 13000 | // Increment of bool sets it to true, but is deprecated. | ||||||||
| 13001 | S.Diag(OpLoc, S.getLangOpts().CPlusPlus17 ? diag::ext_increment_bool | ||||||||
| 13002 | : diag::warn_increment_bool) | ||||||||
| 13003 | << Op->getSourceRange(); | ||||||||
| 13004 | } else if (S.getLangOpts().CPlusPlus && ResType->isEnumeralType()) { | ||||||||
| 13005 | // Error on enum increments and decrements in C++ mode | ||||||||
| 13006 | S.Diag(OpLoc, diag::err_increment_decrement_enum) << IsInc << ResType; | ||||||||
| 13007 | return QualType(); | ||||||||
| 13008 | } else if (ResType->isRealType()) { | ||||||||
| 13009 | // OK! | ||||||||
| 13010 | } else if (ResType->isPointerType()) { | ||||||||
| 13011 | // C99 6.5.2.4p2, 6.5.6p2 | ||||||||
| 13012 | if (!checkArithmeticOpPointerOperand(S, OpLoc, Op)) | ||||||||
| 13013 | return QualType(); | ||||||||
| 13014 | } else if (ResType->isObjCObjectPointerType()) { | ||||||||
| 13015 | // On modern runtimes, ObjC pointer arithmetic is forbidden. | ||||||||
| 13016 | // Otherwise, we just need a complete type. | ||||||||
| 13017 | if (checkArithmeticIncompletePointerType(S, OpLoc, Op) || | ||||||||
| 13018 | checkArithmeticOnObjCPointer(S, OpLoc, Op)) | ||||||||
| 13019 | return QualType(); | ||||||||
| 13020 | } else if (ResType->isAnyComplexType()) { | ||||||||
| 13021 | // C99 does not support ++/-- on complex types, we allow as an extension. | ||||||||
| 13022 | S.Diag(OpLoc, diag::ext_integer_increment_complex) | ||||||||
| 13023 | << ResType << Op->getSourceRange(); | ||||||||
| 13024 | } else if (ResType->isPlaceholderType()) { | ||||||||
| 13025 | ExprResult PR = S.CheckPlaceholderExpr(Op); | ||||||||
| 13026 | if (PR.isInvalid()) return QualType(); | ||||||||
| 13027 | return CheckIncrementDecrementOperand(S, PR.get(), VK, OK, OpLoc, | ||||||||
| 13028 | IsInc, IsPrefix); | ||||||||
| 13029 | } else if (S.getLangOpts().AltiVec && ResType->isVectorType()) { | ||||||||
| 13030 | // OK! ( C/C++ Language Extensions for CBEA(Version 2.6) 10.3 ) | ||||||||
| 13031 | } else if (S.getLangOpts().ZVector && ResType->isVectorType() && | ||||||||
| 13032 | (ResType->castAs<VectorType>()->getVectorKind() != | ||||||||
| 13033 | VectorType::AltiVecBool)) { | ||||||||
| 13034 | // The z vector extensions allow ++ and -- for non-bool vectors. | ||||||||
| 13035 | } else if(S.getLangOpts().OpenCL && ResType->isVectorType() && | ||||||||
| 13036 | ResType->castAs<VectorType>()->getElementType()->isIntegerType()) { | ||||||||
| 13037 | // OpenCL V1.2 6.3 says dec/inc ops operate on integer vector types. | ||||||||
| 13038 | } else { | ||||||||
| 13039 | S.Diag(OpLoc, diag::err_typecheck_illegal_increment_decrement) | ||||||||
| 13040 | << ResType << int(IsInc) << Op->getSourceRange(); | ||||||||
| 13041 | return QualType(); | ||||||||
| 13042 | } | ||||||||
| 13043 | // At this point, we know we have a real, complex or pointer type. | ||||||||
| 13044 | // Now make sure the operand is a modifiable lvalue. | ||||||||
| 13045 | if (CheckForModifiableLvalue(Op, OpLoc, S)) | ||||||||
| 13046 | return QualType(); | ||||||||
| 13047 | if (S.getLangOpts().CPlusPlus20 && ResType.isVolatileQualified()) { | ||||||||
| 13048 | // C++2a [expr.pre.inc]p1, [expr.post.inc]p1: | ||||||||
| 13049 | // An operand with volatile-qualified type is deprecated | ||||||||
| 13050 | S.Diag(OpLoc, diag::warn_deprecated_increment_decrement_volatile) | ||||||||
| 13051 | << IsInc << ResType; | ||||||||
| 13052 | } | ||||||||
| 13053 | // In C++, a prefix increment is the same type as the operand. Otherwise | ||||||||
| 13054 | // (in C or with postfix), the increment is the unqualified type of the | ||||||||
| 13055 | // operand. | ||||||||
| 13056 | if (IsPrefix && S.getLangOpts().CPlusPlus) { | ||||||||
| 13057 | VK = VK_LValue; | ||||||||
| 13058 | OK = Op->getObjectKind(); | ||||||||
| 13059 | return ResType; | ||||||||
| 13060 | } else { | ||||||||
| 13061 | VK = VK_RValue; | ||||||||
| 13062 | return ResType.getUnqualifiedType(); | ||||||||
| 13063 | } | ||||||||
| 13064 | } | ||||||||
| 13065 | |||||||||
| 13066 | |||||||||
| 13067 | /// getPrimaryDecl - Helper function for CheckAddressOfOperand(). | ||||||||
| 13068 | /// This routine allows us to typecheck complex/recursive expressions | ||||||||
| 13069 | /// where the declaration is needed for type checking. We only need to | ||||||||
| 13070 | /// handle cases when the expression references a function designator | ||||||||
| 13071 | /// or is an lvalue. Here are some examples: | ||||||||
| 13072 | /// - &(x) => x | ||||||||
| 13073 | /// - &*****f => f for f a function designator. | ||||||||
| 13074 | /// - &s.xx => s | ||||||||
| 13075 | /// - &s.zz[1].yy -> s, if zz is an array | ||||||||
| 13076 | /// - *(x + 1) -> x, if x is an array | ||||||||
| 13077 | /// - &"123"[2] -> 0 | ||||||||
| 13078 | /// - & __real__ x -> x | ||||||||
| 13079 | /// | ||||||||
| 13080 | /// FIXME: We don't recurse to the RHS of a comma, nor handle pointers to | ||||||||
| 13081 | /// members. | ||||||||
| 13082 | static ValueDecl *getPrimaryDecl(Expr *E) { | ||||||||
| 13083 | switch (E->getStmtClass()) { | ||||||||
| 13084 | case Stmt::DeclRefExprClass: | ||||||||
| 13085 | return cast<DeclRefExpr>(E)->getDecl(); | ||||||||
| 13086 | case Stmt::MemberExprClass: | ||||||||
| 13087 | // If this is an arrow operator, the address is an offset from | ||||||||
| 13088 | // the base's value, so the object the base refers to is | ||||||||
| 13089 | // irrelevant. | ||||||||
| 13090 | if (cast<MemberExpr>(E)->isArrow()) | ||||||||
| 13091 | return nullptr; | ||||||||
| 13092 | // Otherwise, the expression refers to a part of the base | ||||||||
| 13093 | return getPrimaryDecl(cast<MemberExpr>(E)->getBase()); | ||||||||
| 13094 | case Stmt::ArraySubscriptExprClass: { | ||||||||
| 13095 | // FIXME: This code shouldn't be necessary! We should catch the implicit | ||||||||
| 13096 | // promotion of register arrays earlier. | ||||||||
| 13097 | Expr* Base = cast<ArraySubscriptExpr>(E)->getBase(); | ||||||||
| 13098 | if (ImplicitCastExpr* ICE = dyn_cast<ImplicitCastExpr>(Base)) { | ||||||||
| 13099 | if (ICE->getSubExpr()->getType()->isArrayType()) | ||||||||
| 13100 | return getPrimaryDecl(ICE->getSubExpr()); | ||||||||
| 13101 | } | ||||||||
| 13102 | return nullptr; | ||||||||
| 13103 | } | ||||||||
| 13104 | case Stmt::UnaryOperatorClass: { | ||||||||
| 13105 | UnaryOperator *UO = cast<UnaryOperator>(E); | ||||||||
| 13106 | |||||||||
| 13107 | switch(UO->getOpcode()) { | ||||||||
| 13108 | case UO_Real: | ||||||||
| 13109 | case UO_Imag: | ||||||||
| 13110 | case UO_Extension: | ||||||||
| 13111 | return getPrimaryDecl(UO->getSubExpr()); | ||||||||
| 13112 | default: | ||||||||
| 13113 | return nullptr; | ||||||||
| 13114 | } | ||||||||
| 13115 | } | ||||||||
| 13116 | case Stmt::ParenExprClass: | ||||||||
| 13117 | return getPrimaryDecl(cast<ParenExpr>(E)->getSubExpr()); | ||||||||
| 13118 | case Stmt::ImplicitCastExprClass: | ||||||||
| 13119 | // If the result of an implicit cast is an l-value, we care about | ||||||||
| 13120 | // the sub-expression; otherwise, the result here doesn't matter. | ||||||||
| 13121 | return getPrimaryDecl(cast<ImplicitCastExpr>(E)->getSubExpr()); | ||||||||
| 13122 | case Stmt::CXXUuidofExprClass: | ||||||||
| 13123 | return cast<CXXUuidofExpr>(E)->getGuidDecl(); | ||||||||
| 13124 | default: | ||||||||
| 13125 | return nullptr; | ||||||||
| 13126 | } | ||||||||
| 13127 | } | ||||||||
| 13128 | |||||||||
| 13129 | namespace { | ||||||||
| 13130 | enum { | ||||||||
| 13131 | AO_Bit_Field = 0, | ||||||||
| 13132 | AO_Vector_Element = 1, | ||||||||
| 13133 | AO_Property_Expansion = 2, | ||||||||
| 13134 | AO_Register_Variable = 3, | ||||||||
| 13135 | AO_Matrix_Element = 4, | ||||||||
| 13136 | AO_No_Error = 5 | ||||||||
| 13137 | }; | ||||||||
| 13138 | } | ||||||||
| 13139 | /// Diagnose invalid operand for address of operations. | ||||||||
| 13140 | /// | ||||||||
| 13141 | /// \param Type The type of operand which cannot have its address taken. | ||||||||
| 13142 | static void diagnoseAddressOfInvalidType(Sema &S, SourceLocation Loc, | ||||||||
| 13143 | Expr *E, unsigned Type) { | ||||||||
| 13144 | S.Diag(Loc, diag::err_typecheck_address_of) << Type << E->getSourceRange(); | ||||||||
| 13145 | } | ||||||||
| 13146 | |||||||||
| 13147 | /// CheckAddressOfOperand - The operand of & must be either a function | ||||||||
| 13148 | /// designator or an lvalue designating an object. If it is an lvalue, the | ||||||||
| 13149 | /// object cannot be declared with storage class register or be a bit field. | ||||||||
| 13150 | /// Note: The usual conversions are *not* applied to the operand of the & | ||||||||
| 13151 | /// operator (C99 6.3.2.1p[2-4]), and its result is never an lvalue. | ||||||||
| 13152 | /// In C++, the operand might be an overloaded function name, in which case | ||||||||
| 13153 | /// we allow the '&' but retain the overloaded-function type. | ||||||||
| 13154 | QualType Sema::CheckAddressOfOperand(ExprResult &OrigOp, SourceLocation OpLoc) { | ||||||||
| 13155 | if (const BuiltinType *PTy = OrigOp.get()->getType()->getAsPlaceholderType()){ | ||||||||
| 13156 | if (PTy->getKind() == BuiltinType::Overload) { | ||||||||
| 13157 | Expr *E = OrigOp.get()->IgnoreParens(); | ||||||||
| 13158 | if (!isa<OverloadExpr>(E)) { | ||||||||
| 13159 | assert(cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf)((cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf) ? static_cast<void> (0) : __assert_fail ("cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13159, __PRETTY_FUNCTION__)); | ||||||||
| 13160 | Diag(OpLoc, diag::err_typecheck_invalid_lvalue_addrof_addrof_function) | ||||||||
| 13161 | << OrigOp.get()->getSourceRange(); | ||||||||
| 13162 | return QualType(); | ||||||||
| 13163 | } | ||||||||
| 13164 | |||||||||
| 13165 | OverloadExpr *Ovl = cast<OverloadExpr>(E); | ||||||||
| 13166 | if (isa<UnresolvedMemberExpr>(Ovl)) | ||||||||
| 13167 | if (!ResolveSingleFunctionTemplateSpecialization(Ovl)) { | ||||||||
| 13168 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||||||
| 13169 | << OrigOp.get()->getSourceRange(); | ||||||||
| 13170 | return QualType(); | ||||||||
| 13171 | } | ||||||||
| 13172 | |||||||||
| 13173 | return Context.OverloadTy; | ||||||||
| 13174 | } | ||||||||
| 13175 | |||||||||
| 13176 | if (PTy->getKind() == BuiltinType::UnknownAny) | ||||||||
| 13177 | return Context.UnknownAnyTy; | ||||||||
| 13178 | |||||||||
| 13179 | if (PTy->getKind() == BuiltinType::BoundMember) { | ||||||||
| 13180 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||||||
| 13181 | << OrigOp.get()->getSourceRange(); | ||||||||
| 13182 | return QualType(); | ||||||||
| 13183 | } | ||||||||
| 13184 | |||||||||
| 13185 | OrigOp = CheckPlaceholderExpr(OrigOp.get()); | ||||||||
| 13186 | if (OrigOp.isInvalid()) return QualType(); | ||||||||
| 13187 | } | ||||||||
| 13188 | |||||||||
| 13189 | if (OrigOp.get()->isTypeDependent()) | ||||||||
| 13190 | return Context.DependentTy; | ||||||||
| 13191 | |||||||||
| 13192 | assert(!OrigOp.get()->getType()->isPlaceholderType())((!OrigOp.get()->getType()->isPlaceholderType()) ? static_cast <void> (0) : __assert_fail ("!OrigOp.get()->getType()->isPlaceholderType()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13192, __PRETTY_FUNCTION__)); | ||||||||
| 13193 | |||||||||
| 13194 | // Make sure to ignore parentheses in subsequent checks | ||||||||
| 13195 | Expr *op = OrigOp.get()->IgnoreParens(); | ||||||||
| 13196 | |||||||||
| 13197 | // In OpenCL captures for blocks called as lambda functions | ||||||||
| 13198 | // are located in the private address space. Blocks used in | ||||||||
| 13199 | // enqueue_kernel can be located in a different address space | ||||||||
| 13200 | // depending on a vendor implementation. Thus preventing | ||||||||
| 13201 | // taking an address of the capture to avoid invalid AS casts. | ||||||||
| 13202 | if (LangOpts.OpenCL) { | ||||||||
| 13203 | auto* VarRef = dyn_cast<DeclRefExpr>(op); | ||||||||
| 13204 | if (VarRef && VarRef->refersToEnclosingVariableOrCapture()) { | ||||||||
| 13205 | Diag(op->getExprLoc(), diag::err_opencl_taking_address_capture); | ||||||||
| 13206 | return QualType(); | ||||||||
| 13207 | } | ||||||||
| 13208 | } | ||||||||
| 13209 | |||||||||
| 13210 | if (getLangOpts().C99) { | ||||||||
| 13211 | // Implement C99-only parts of addressof rules. | ||||||||
| 13212 | if (UnaryOperator* uOp = dyn_cast<UnaryOperator>(op)) { | ||||||||
| 13213 | if (uOp->getOpcode() == UO_Deref) | ||||||||
| 13214 | // Per C99 6.5.3.2, the address of a deref always returns a valid result | ||||||||
| 13215 | // (assuming the deref expression is valid). | ||||||||
| 13216 | return uOp->getSubExpr()->getType(); | ||||||||
| 13217 | } | ||||||||
| 13218 | // Technically, there should be a check for array subscript | ||||||||
| 13219 | // expressions here, but the result of one is always an lvalue anyway. | ||||||||
| 13220 | } | ||||||||
| 13221 | ValueDecl *dcl = getPrimaryDecl(op); | ||||||||
| 13222 | |||||||||
| 13223 | if (auto *FD = dyn_cast_or_null<FunctionDecl>(dcl)) | ||||||||
| 13224 | if (!checkAddressOfFunctionIsAvailable(FD, /*Complain=*/true, | ||||||||
| 13225 | op->getBeginLoc())) | ||||||||
| 13226 | return QualType(); | ||||||||
| 13227 | |||||||||
| 13228 | Expr::LValueClassification lval = op->ClassifyLValue(Context); | ||||||||
| 13229 | unsigned AddressOfError = AO_No_Error; | ||||||||
| 13230 | |||||||||
| 13231 | if (lval == Expr::LV_ClassTemporary || lval == Expr::LV_ArrayTemporary) { | ||||||||
| 13232 | bool sfinae = (bool)isSFINAEContext(); | ||||||||
| 13233 | Diag(OpLoc, isSFINAEContext() ? diag::err_typecheck_addrof_temporary | ||||||||
| 13234 | : diag::ext_typecheck_addrof_temporary) | ||||||||
| 13235 | << op->getType() << op->getSourceRange(); | ||||||||
| 13236 | if (sfinae) | ||||||||
| 13237 | return QualType(); | ||||||||
| 13238 | // Materialize the temporary as an lvalue so that we can take its address. | ||||||||
| 13239 | OrigOp = op = | ||||||||
| 13240 | CreateMaterializeTemporaryExpr(op->getType(), OrigOp.get(), true); | ||||||||
| 13241 | } else if (isa<ObjCSelectorExpr>(op)) { | ||||||||
| 13242 | return Context.getPointerType(op->getType()); | ||||||||
| 13243 | } else if (lval == Expr::LV_MemberFunction) { | ||||||||
| 13244 | // If it's an instance method, make a member pointer. | ||||||||
| 13245 | // The expression must have exactly the form &A::foo. | ||||||||
| 13246 | |||||||||
| 13247 | // If the underlying expression isn't a decl ref, give up. | ||||||||
| 13248 | if (!isa<DeclRefExpr>(op)) { | ||||||||
| 13249 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||||||
| 13250 | << OrigOp.get()->getSourceRange(); | ||||||||
| 13251 | return QualType(); | ||||||||
| 13252 | } | ||||||||
| 13253 | DeclRefExpr *DRE = cast<DeclRefExpr>(op); | ||||||||
| 13254 | CXXMethodDecl *MD = cast<CXXMethodDecl>(DRE->getDecl()); | ||||||||
| 13255 | |||||||||
| 13256 | // The id-expression was parenthesized. | ||||||||
| 13257 | if (OrigOp.get() != DRE) { | ||||||||
| 13258 | Diag(OpLoc, diag::err_parens_pointer_member_function) | ||||||||
| 13259 | << OrigOp.get()->getSourceRange(); | ||||||||
| 13260 | |||||||||
| 13261 | // The method was named without a qualifier. | ||||||||
| 13262 | } else if (!DRE->getQualifier()) { | ||||||||
| 13263 | if (MD->getParent()->getName().empty()) | ||||||||
| 13264 | Diag(OpLoc, diag::err_unqualified_pointer_member_function) | ||||||||
| 13265 | << op->getSourceRange(); | ||||||||
| 13266 | else { | ||||||||
| 13267 | SmallString<32> Str; | ||||||||
| 13268 | StringRef Qual = (MD->getParent()->getName() + "::").toStringRef(Str); | ||||||||
| 13269 | Diag(OpLoc, diag::err_unqualified_pointer_member_function) | ||||||||
| 13270 | << op->getSourceRange() | ||||||||
| 13271 | << FixItHint::CreateInsertion(op->getSourceRange().getBegin(), Qual); | ||||||||
| 13272 | } | ||||||||
| 13273 | } | ||||||||
| 13274 | |||||||||
| 13275 | // Taking the address of a dtor is illegal per C++ [class.dtor]p2. | ||||||||
| 13276 | if (isa<CXXDestructorDecl>(MD)) | ||||||||
| 13277 | Diag(OpLoc, diag::err_typecheck_addrof_dtor) << op->getSourceRange(); | ||||||||
| 13278 | |||||||||
| 13279 | QualType MPTy = Context.getMemberPointerType( | ||||||||
| 13280 | op->getType(), Context.getTypeDeclType(MD->getParent()).getTypePtr()); | ||||||||
| 13281 | // Under the MS ABI, lock down the inheritance model now. | ||||||||
| 13282 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||||||
| 13283 | (void)isCompleteType(OpLoc, MPTy); | ||||||||
| 13284 | return MPTy; | ||||||||
| 13285 | } else if (lval != Expr::LV_Valid && lval != Expr::LV_IncompleteVoidType) { | ||||||||
| 13286 | // C99 6.5.3.2p1 | ||||||||
| 13287 | // The operand must be either an l-value or a function designator | ||||||||
| 13288 | if (!op->getType()->isFunctionType()) { | ||||||||
| 13289 | // Use a special diagnostic for loads from property references. | ||||||||
| 13290 | if (isa<PseudoObjectExpr>(op)) { | ||||||||
| 13291 | AddressOfError = AO_Property_Expansion; | ||||||||
| 13292 | } else { | ||||||||
| 13293 | Diag(OpLoc, diag::err_typecheck_invalid_lvalue_addrof) | ||||||||
| 13294 | << op->getType() << op->getSourceRange(); | ||||||||
| 13295 | return QualType(); | ||||||||
| 13296 | } | ||||||||
| 13297 | } | ||||||||
| 13298 | } else if (op->getObjectKind() == OK_BitField) { // C99 6.5.3.2p1 | ||||||||
| 13299 | // The operand cannot be a bit-field | ||||||||
| 13300 | AddressOfError = AO_Bit_Field; | ||||||||
| 13301 | } else if (op->getObjectKind() == OK_VectorComponent) { | ||||||||
| 13302 | // The operand cannot be an element of a vector | ||||||||
| 13303 | AddressOfError = AO_Vector_Element; | ||||||||
| 13304 | } else if (op->getObjectKind() == OK_MatrixComponent) { | ||||||||
| 13305 | // The operand cannot be an element of a matrix. | ||||||||
| 13306 | AddressOfError = AO_Matrix_Element; | ||||||||
| 13307 | } else if (dcl) { // C99 6.5.3.2p1 | ||||||||
| 13308 | // We have an lvalue with a decl. Make sure the decl is not declared | ||||||||
| 13309 | // with the register storage-class specifier. | ||||||||
| 13310 | if (const VarDecl *vd = dyn_cast<VarDecl>(dcl)) { | ||||||||
| 13311 | // in C++ it is not error to take address of a register | ||||||||
| 13312 | // variable (c++03 7.1.1P3) | ||||||||
| 13313 | if (vd->getStorageClass() == SC_Register && | ||||||||
| 13314 | !getLangOpts().CPlusPlus) { | ||||||||
| 13315 | AddressOfError = AO_Register_Variable; | ||||||||
| 13316 | } | ||||||||
| 13317 | } else if (isa<MSPropertyDecl>(dcl)) { | ||||||||
| 13318 | AddressOfError = AO_Property_Expansion; | ||||||||
| 13319 | } else if (isa<FunctionTemplateDecl>(dcl)) { | ||||||||
| 13320 | return Context.OverloadTy; | ||||||||
| 13321 | } else if (isa<FieldDecl>(dcl) || isa<IndirectFieldDecl>(dcl)) { | ||||||||
| 13322 | // Okay: we can take the address of a field. | ||||||||
| 13323 | // Could be a pointer to member, though, if there is an explicit | ||||||||
| 13324 | // scope qualifier for the class. | ||||||||
| 13325 | if (isa<DeclRefExpr>(op) && cast<DeclRefExpr>(op)->getQualifier()) { | ||||||||
| 13326 | DeclContext *Ctx = dcl->getDeclContext(); | ||||||||
| 13327 | if (Ctx && Ctx->isRecord()) { | ||||||||
| 13328 | if (dcl->getType()->isReferenceType()) { | ||||||||
| 13329 | Diag(OpLoc, | ||||||||
| 13330 | diag::err_cannot_form_pointer_to_member_of_reference_type) | ||||||||
| 13331 | << dcl->getDeclName() << dcl->getType(); | ||||||||
| 13332 | return QualType(); | ||||||||
| 13333 | } | ||||||||
| 13334 | |||||||||
| 13335 | while (cast<RecordDecl>(Ctx)->isAnonymousStructOrUnion()) | ||||||||
| 13336 | Ctx = Ctx->getParent(); | ||||||||
| 13337 | |||||||||
| 13338 | QualType MPTy = Context.getMemberPointerType( | ||||||||
| 13339 | op->getType(), | ||||||||
| 13340 | Context.getTypeDeclType(cast<RecordDecl>(Ctx)).getTypePtr()); | ||||||||
| 13341 | // Under the MS ABI, lock down the inheritance model now. | ||||||||
| 13342 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||||||
| 13343 | (void)isCompleteType(OpLoc, MPTy); | ||||||||
| 13344 | return MPTy; | ||||||||
| 13345 | } | ||||||||
| 13346 | } | ||||||||
| 13347 | } else if (!isa<FunctionDecl>(dcl) && !isa<NonTypeTemplateParmDecl>(dcl) && | ||||||||
| 13348 | !isa<BindingDecl>(dcl) && !isa<MSGuidDecl>(dcl)) | ||||||||
| 13349 | llvm_unreachable("Unknown/unexpected decl type")::llvm::llvm_unreachable_internal("Unknown/unexpected decl type" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13349); | ||||||||
| 13350 | } | ||||||||
| 13351 | |||||||||
| 13352 | if (AddressOfError != AO_No_Error) { | ||||||||
| 13353 | diagnoseAddressOfInvalidType(*this, OpLoc, op, AddressOfError); | ||||||||
| 13354 | return QualType(); | ||||||||
| 13355 | } | ||||||||
| 13356 | |||||||||
| 13357 | if (lval == Expr::LV_IncompleteVoidType) { | ||||||||
| 13358 | // Taking the address of a void variable is technically illegal, but we | ||||||||
| 13359 | // allow it in cases which are otherwise valid. | ||||||||
| 13360 | // Example: "extern void x; void* y = &x;". | ||||||||
| 13361 | Diag(OpLoc, diag::ext_typecheck_addrof_void) << op->getSourceRange(); | ||||||||
| 13362 | } | ||||||||
| 13363 | |||||||||
| 13364 | // If the operand has type "type", the result has type "pointer to type". | ||||||||
| 13365 | if (op->getType()->isObjCObjectType()) | ||||||||
| 13366 | return Context.getObjCObjectPointerType(op->getType()); | ||||||||
| 13367 | |||||||||
| 13368 | CheckAddressOfPackedMember(op); | ||||||||
| 13369 | |||||||||
| 13370 | return Context.getPointerType(op->getType()); | ||||||||
| 13371 | } | ||||||||
| 13372 | |||||||||
| 13373 | static void RecordModifiableNonNullParam(Sema &S, const Expr *Exp) { | ||||||||
| 13374 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Exp); | ||||||||
| 13375 | if (!DRE) | ||||||||
| 13376 | return; | ||||||||
| 13377 | const Decl *D = DRE->getDecl(); | ||||||||
| 13378 | if (!D) | ||||||||
| 13379 | return; | ||||||||
| 13380 | const ParmVarDecl *Param = dyn_cast<ParmVarDecl>(D); | ||||||||
| 13381 | if (!Param) | ||||||||
| 13382 | return; | ||||||||
| 13383 | if (const FunctionDecl* FD = dyn_cast<FunctionDecl>(Param->getDeclContext())) | ||||||||
| 13384 | if (!FD->hasAttr<NonNullAttr>() && !Param->hasAttr<NonNullAttr>()) | ||||||||
| 13385 | return; | ||||||||
| 13386 | if (FunctionScopeInfo *FD = S.getCurFunction()) | ||||||||
| 13387 | if (!FD->ModifiedNonNullParams.count(Param)) | ||||||||
| 13388 | FD->ModifiedNonNullParams.insert(Param); | ||||||||
| 13389 | } | ||||||||
| 13390 | |||||||||
| 13391 | /// CheckIndirectionOperand - Type check unary indirection (prefix '*'). | ||||||||
| 13392 | static QualType CheckIndirectionOperand(Sema &S, Expr *Op, ExprValueKind &VK, | ||||||||
| 13393 | SourceLocation OpLoc) { | ||||||||
| 13394 | if (Op->isTypeDependent()) | ||||||||
| 13395 | return S.Context.DependentTy; | ||||||||
| 13396 | |||||||||
| 13397 | ExprResult ConvResult = S.UsualUnaryConversions(Op); | ||||||||
| 13398 | if (ConvResult.isInvalid()) | ||||||||
| 13399 | return QualType(); | ||||||||
| 13400 | Op = ConvResult.get(); | ||||||||
| 13401 | QualType OpTy = Op->getType(); | ||||||||
| 13402 | QualType Result; | ||||||||
| 13403 | |||||||||
| 13404 | if (isa<CXXReinterpretCastExpr>(Op)) { | ||||||||
| 13405 | QualType OpOrigType = Op->IgnoreParenCasts()->getType(); | ||||||||
| 13406 | S.CheckCompatibleReinterpretCast(OpOrigType, OpTy, /*IsDereference*/true, | ||||||||
| 13407 | Op->getSourceRange()); | ||||||||
| 13408 | } | ||||||||
| 13409 | |||||||||
| 13410 | if (const PointerType *PT = OpTy->getAs<PointerType>()) | ||||||||
| 13411 | { | ||||||||
| 13412 | Result = PT->getPointeeType(); | ||||||||
| 13413 | } | ||||||||
| 13414 | else if (const ObjCObjectPointerType *OPT = | ||||||||
| 13415 | OpTy->getAs<ObjCObjectPointerType>()) | ||||||||
| 13416 | Result = OPT->getPointeeType(); | ||||||||
| 13417 | else { | ||||||||
| 13418 | ExprResult PR = S.CheckPlaceholderExpr(Op); | ||||||||
| 13419 | if (PR.isInvalid()) return QualType(); | ||||||||
| 13420 | if (PR.get() != Op) | ||||||||
| 13421 | return CheckIndirectionOperand(S, PR.get(), VK, OpLoc); | ||||||||
| 13422 | } | ||||||||
| 13423 | |||||||||
| 13424 | if (Result.isNull()) { | ||||||||
| 13425 | S.Diag(OpLoc, diag::err_typecheck_indirection_requires_pointer) | ||||||||
| 13426 | << OpTy << Op->getSourceRange(); | ||||||||
| 13427 | return QualType(); | ||||||||
| 13428 | } | ||||||||
| 13429 | |||||||||
| 13430 | // Note that per both C89 and C99, indirection is always legal, even if Result | ||||||||
| 13431 | // is an incomplete type or void. It would be possible to warn about | ||||||||
| 13432 | // dereferencing a void pointer, but it's completely well-defined, and such a | ||||||||
| 13433 | // warning is unlikely to catch any mistakes. In C++, indirection is not valid | ||||||||
| 13434 | // for pointers to 'void' but is fine for any other pointer type: | ||||||||
| 13435 | // | ||||||||
| 13436 | // C++ [expr.unary.op]p1: | ||||||||
| 13437 | // [...] the expression to which [the unary * operator] is applied shall | ||||||||
| 13438 | // be a pointer to an object type, or a pointer to a function type | ||||||||
| 13439 | if (S.getLangOpts().CPlusPlus && Result->isVoidType()) | ||||||||
| 13440 | S.Diag(OpLoc, diag::ext_typecheck_indirection_through_void_pointer) | ||||||||
| 13441 | << OpTy << Op->getSourceRange(); | ||||||||
| 13442 | |||||||||
| 13443 | // Dereferences are usually l-values... | ||||||||
| 13444 | VK = VK_LValue; | ||||||||
| 13445 | |||||||||
| 13446 | // ...except that certain expressions are never l-values in C. | ||||||||
| 13447 | if (!S.getLangOpts().CPlusPlus && Result.isCForbiddenLValueType()) | ||||||||
| 13448 | VK = VK_RValue; | ||||||||
| 13449 | |||||||||
| 13450 | return Result; | ||||||||
| 13451 | } | ||||||||
| 13452 | |||||||||
| 13453 | BinaryOperatorKind Sema::ConvertTokenKindToBinaryOpcode(tok::TokenKind Kind) { | ||||||||
| 13454 | BinaryOperatorKind Opc; | ||||||||
| 13455 | switch (Kind) { | ||||||||
| 13456 | default: llvm_unreachable("Unknown binop!")::llvm::llvm_unreachable_internal("Unknown binop!", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13456); | ||||||||
| 13457 | case tok::periodstar: Opc = BO_PtrMemD; break; | ||||||||
| 13458 | case tok::arrowstar: Opc = BO_PtrMemI; break; | ||||||||
| 13459 | case tok::star: Opc = BO_Mul; break; | ||||||||
| 13460 | case tok::slash: Opc = BO_Div; break; | ||||||||
| 13461 | case tok::percent: Opc = BO_Rem; break; | ||||||||
| 13462 | case tok::plus: Opc = BO_Add; break; | ||||||||
| 13463 | case tok::minus: Opc = BO_Sub; break; | ||||||||
| 13464 | case tok::lessless: Opc = BO_Shl; break; | ||||||||
| 13465 | case tok::greatergreater: Opc = BO_Shr; break; | ||||||||
| 13466 | case tok::lessequal: Opc = BO_LE; break; | ||||||||
| 13467 | case tok::less: Opc = BO_LT; break; | ||||||||
| 13468 | case tok::greaterequal: Opc = BO_GE; break; | ||||||||
| 13469 | case tok::greater: Opc = BO_GT; break; | ||||||||
| 13470 | case tok::exclaimequal: Opc = BO_NE; break; | ||||||||
| 13471 | case tok::equalequal: Opc = BO_EQ; break; | ||||||||
| 13472 | case tok::spaceship: Opc = BO_Cmp; break; | ||||||||
| 13473 | case tok::amp: Opc = BO_And; break; | ||||||||
| 13474 | case tok::caret: Opc = BO_Xor; break; | ||||||||
| 13475 | case tok::pipe: Opc = BO_Or; break; | ||||||||
| 13476 | case tok::ampamp: Opc = BO_LAnd; break; | ||||||||
| 13477 | case tok::pipepipe: Opc = BO_LOr; break; | ||||||||
| 13478 | case tok::equal: Opc = BO_Assign; break; | ||||||||
| 13479 | case tok::starequal: Opc = BO_MulAssign; break; | ||||||||
| 13480 | case tok::slashequal: Opc = BO_DivAssign; break; | ||||||||
| 13481 | case tok::percentequal: Opc = BO_RemAssign; break; | ||||||||
| 13482 | case tok::plusequal: Opc = BO_AddAssign; break; | ||||||||
| 13483 | case tok::minusequal: Opc = BO_SubAssign; break; | ||||||||
| 13484 | case tok::lesslessequal: Opc = BO_ShlAssign; break; | ||||||||
| 13485 | case tok::greatergreaterequal: Opc = BO_ShrAssign; break; | ||||||||
| 13486 | case tok::ampequal: Opc = BO_AndAssign; break; | ||||||||
| 13487 | case tok::caretequal: Opc = BO_XorAssign; break; | ||||||||
| 13488 | case tok::pipeequal: Opc = BO_OrAssign; break; | ||||||||
| 13489 | case tok::comma: Opc = BO_Comma; break; | ||||||||
| 13490 | } | ||||||||
| 13491 | return Opc; | ||||||||
| 13492 | } | ||||||||
| 13493 | |||||||||
| 13494 | static inline UnaryOperatorKind ConvertTokenKindToUnaryOpcode( | ||||||||
| 13495 | tok::TokenKind Kind) { | ||||||||
| 13496 | UnaryOperatorKind Opc; | ||||||||
| 13497 | switch (Kind) { | ||||||||
| 13498 | default: llvm_unreachable("Unknown unary op!")::llvm::llvm_unreachable_internal("Unknown unary op!", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13498); | ||||||||
| 13499 | case tok::plusplus: Opc = UO_PreInc; break; | ||||||||
| 13500 | case tok::minusminus: Opc = UO_PreDec; break; | ||||||||
| 13501 | case tok::amp: Opc = UO_AddrOf; break; | ||||||||
| 13502 | case tok::star: Opc = UO_Deref; break; | ||||||||
| 13503 | case tok::plus: Opc = UO_Plus; break; | ||||||||
| 13504 | case tok::minus: Opc = UO_Minus; break; | ||||||||
| 13505 | case tok::tilde: Opc = UO_Not; break; | ||||||||
| 13506 | case tok::exclaim: Opc = UO_LNot; break; | ||||||||
| 13507 | case tok::kw___real: Opc = UO_Real; break; | ||||||||
| 13508 | case tok::kw___imag: Opc = UO_Imag; break; | ||||||||
| 13509 | case tok::kw___extension__: Opc = UO_Extension; break; | ||||||||
| 13510 | } | ||||||||
| 13511 | return Opc; | ||||||||
| 13512 | } | ||||||||
| 13513 | |||||||||
| 13514 | /// DiagnoseSelfAssignment - Emits a warning if a value is assigned to itself. | ||||||||
| 13515 | /// This warning suppressed in the event of macro expansions. | ||||||||
| 13516 | static void DiagnoseSelfAssignment(Sema &S, Expr *LHSExpr, Expr *RHSExpr, | ||||||||
| 13517 | SourceLocation OpLoc, bool IsBuiltin) { | ||||||||
| 13518 | if (S.inTemplateInstantiation()) | ||||||||
| 13519 | return; | ||||||||
| 13520 | if (S.isUnevaluatedContext()) | ||||||||
| 13521 | return; | ||||||||
| 13522 | if (OpLoc.isInvalid() || OpLoc.isMacroID()) | ||||||||
| 13523 | return; | ||||||||
| 13524 | LHSExpr = LHSExpr->IgnoreParenImpCasts(); | ||||||||
| 13525 | RHSExpr = RHSExpr->IgnoreParenImpCasts(); | ||||||||
| 13526 | const DeclRefExpr *LHSDeclRef = dyn_cast<DeclRefExpr>(LHSExpr); | ||||||||
| 13527 | const DeclRefExpr *RHSDeclRef = dyn_cast<DeclRefExpr>(RHSExpr); | ||||||||
| 13528 | if (!LHSDeclRef || !RHSDeclRef || | ||||||||
| 13529 | LHSDeclRef->getLocation().isMacroID() || | ||||||||
| 13530 | RHSDeclRef->getLocation().isMacroID()) | ||||||||
| 13531 | return; | ||||||||
| 13532 | const ValueDecl *LHSDecl = | ||||||||
| 13533 | cast<ValueDecl>(LHSDeclRef->getDecl()->getCanonicalDecl()); | ||||||||
| 13534 | const ValueDecl *RHSDecl = | ||||||||
| 13535 | cast<ValueDecl>(RHSDeclRef->getDecl()->getCanonicalDecl()); | ||||||||
| 13536 | if (LHSDecl != RHSDecl) | ||||||||
| 13537 | return; | ||||||||
| 13538 | if (LHSDecl->getType().isVolatileQualified()) | ||||||||
| 13539 | return; | ||||||||
| 13540 | if (const ReferenceType *RefTy = LHSDecl->getType()->getAs<ReferenceType>()) | ||||||||
| 13541 | if (RefTy->getPointeeType().isVolatileQualified()) | ||||||||
| 13542 | return; | ||||||||
| 13543 | |||||||||
| 13544 | S.Diag(OpLoc, IsBuiltin ? diag::warn_self_assignment_builtin | ||||||||
| 13545 | : diag::warn_self_assignment_overloaded) | ||||||||
| 13546 | << LHSDeclRef->getType() << LHSExpr->getSourceRange() | ||||||||
| 13547 | << RHSExpr->getSourceRange(); | ||||||||
| 13548 | } | ||||||||
| 13549 | |||||||||
| 13550 | /// Check if a bitwise-& is performed on an Objective-C pointer. This | ||||||||
| 13551 | /// is usually indicative of introspection within the Objective-C pointer. | ||||||||
| 13552 | static void checkObjCPointerIntrospection(Sema &S, ExprResult &L, ExprResult &R, | ||||||||
| 13553 | SourceLocation OpLoc) { | ||||||||
| 13554 | if (!S.getLangOpts().ObjC) | ||||||||
| 13555 | return; | ||||||||
| 13556 | |||||||||
| 13557 | const Expr *ObjCPointerExpr = nullptr, *OtherExpr = nullptr; | ||||||||
| 13558 | const Expr *LHS = L.get(); | ||||||||
| 13559 | const Expr *RHS = R.get(); | ||||||||
| 13560 | |||||||||
| 13561 | if (LHS->IgnoreParenCasts()->getType()->isObjCObjectPointerType()) { | ||||||||
| 13562 | ObjCPointerExpr = LHS; | ||||||||
| 13563 | OtherExpr = RHS; | ||||||||
| 13564 | } | ||||||||
| 13565 | else if (RHS->IgnoreParenCasts()->getType()->isObjCObjectPointerType()) { | ||||||||
| 13566 | ObjCPointerExpr = RHS; | ||||||||
| 13567 | OtherExpr = LHS; | ||||||||
| 13568 | } | ||||||||
| 13569 | |||||||||
| 13570 | // This warning is deliberately made very specific to reduce false | ||||||||
| 13571 | // positives with logic that uses '&' for hashing. This logic mainly | ||||||||
| 13572 | // looks for code trying to introspect into tagged pointers, which | ||||||||
| 13573 | // code should generally never do. | ||||||||
| 13574 | if (ObjCPointerExpr && isa<IntegerLiteral>(OtherExpr->IgnoreParenCasts())) { | ||||||||
| 13575 | unsigned Diag = diag::warn_objc_pointer_masking; | ||||||||
| 13576 | // Determine if we are introspecting the result of performSelectorXXX. | ||||||||
| 13577 | const Expr *Ex = ObjCPointerExpr->IgnoreParenCasts(); | ||||||||
| 13578 | // Special case messages to -performSelector and friends, which | ||||||||
| 13579 | // can return non-pointer values boxed in a pointer value. | ||||||||
| 13580 | // Some clients may wish to silence warnings in this subcase. | ||||||||
| 13581 | if (const ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(Ex)) { | ||||||||
| 13582 | Selector S = ME->getSelector(); | ||||||||
| 13583 | StringRef SelArg0 = S.getNameForSlot(0); | ||||||||
| 13584 | if (SelArg0.startswith("performSelector")) | ||||||||
| 13585 | Diag = diag::warn_objc_pointer_masking_performSelector; | ||||||||
| 13586 | } | ||||||||
| 13587 | |||||||||
| 13588 | S.Diag(OpLoc, Diag) | ||||||||
| 13589 | << ObjCPointerExpr->getSourceRange(); | ||||||||
| 13590 | } | ||||||||
| 13591 | } | ||||||||
| 13592 | |||||||||
| 13593 | static NamedDecl *getDeclFromExpr(Expr *E) { | ||||||||
| 13594 | if (!E) | ||||||||
| 13595 | return nullptr; | ||||||||
| 13596 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
| 13597 | return DRE->getDecl(); | ||||||||
| 13598 | if (auto *ME = dyn_cast<MemberExpr>(E)) | ||||||||
| 13599 | return ME->getMemberDecl(); | ||||||||
| 13600 | if (auto *IRE = dyn_cast<ObjCIvarRefExpr>(E)) | ||||||||
| 13601 | return IRE->getDecl(); | ||||||||
| 13602 | return nullptr; | ||||||||
| 13603 | } | ||||||||
| 13604 | |||||||||
| 13605 | // This helper function promotes a binary operator's operands (which are of a | ||||||||
| 13606 | // half vector type) to a vector of floats and then truncates the result to | ||||||||
| 13607 | // a vector of either half or short. | ||||||||
| 13608 | static ExprResult convertHalfVecBinOp(Sema &S, ExprResult LHS, ExprResult RHS, | ||||||||
| 13609 | BinaryOperatorKind Opc, QualType ResultTy, | ||||||||
| 13610 | ExprValueKind VK, ExprObjectKind OK, | ||||||||
| 13611 | bool IsCompAssign, SourceLocation OpLoc, | ||||||||
| 13612 | FPOptionsOverride FPFeatures) { | ||||||||
| 13613 | auto &Context = S.getASTContext(); | ||||||||
| 13614 | assert((isVector(ResultTy, Context.HalfTy) ||(((isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context .ShortTy)) && "Result must be a vector of half or short" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13616, __PRETTY_FUNCTION__)) | ||||||||
| 13615 | isVector(ResultTy, Context.ShortTy)) &&(((isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context .ShortTy)) && "Result must be a vector of half or short" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13616, __PRETTY_FUNCTION__)) | ||||||||
| 13616 | "Result must be a vector of half or short")(((isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context .ShortTy)) && "Result must be a vector of half or short" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13616, __PRETTY_FUNCTION__)); | ||||||||
| 13617 | assert(isVector(LHS.get()->getType(), Context.HalfTy) &&((isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && "both operands expected to be a half vector") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13619, __PRETTY_FUNCTION__)) | ||||||||
| 13618 | isVector(RHS.get()->getType(), Context.HalfTy) &&((isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && "both operands expected to be a half vector") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13619, __PRETTY_FUNCTION__)) | ||||||||
| 13619 | "both operands expected to be a half vector")((isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && "both operands expected to be a half vector") ? static_cast< 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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13619, __PRETTY_FUNCTION__)); | ||||||||
| 13620 | |||||||||
| 13621 | RHS = convertVector(RHS.get(), Context.FloatTy, S); | ||||||||
| 13622 | QualType BinOpResTy = RHS.get()->getType(); | ||||||||
| 13623 | |||||||||
| 13624 | // If Opc is a comparison, ResultType is a vector of shorts. In that case, | ||||||||
| 13625 | // change BinOpResTy to a vector of ints. | ||||||||
| 13626 | if (isVector(ResultTy, Context.ShortTy)) | ||||||||
| 13627 | BinOpResTy = S.GetSignedVectorType(BinOpResTy); | ||||||||
| 13628 | |||||||||
| 13629 | if (IsCompAssign) | ||||||||
| 13630 | return CompoundAssignOperator::Create(Context, LHS.get(), RHS.get(), Opc, | ||||||||
| 13631 | ResultTy, VK, OK, OpLoc, FPFeatures, | ||||||||
| 13632 | BinOpResTy, BinOpResTy); | ||||||||
| 13633 | |||||||||
| 13634 | LHS = convertVector(LHS.get(), Context.FloatTy, S); | ||||||||
| 13635 | auto *BO = BinaryOperator::Create(Context, LHS.get(), RHS.get(), Opc, | ||||||||
| 13636 | BinOpResTy, VK, OK, OpLoc, FPFeatures); | ||||||||
| 13637 | return convertVector(BO, ResultTy->castAs<VectorType>()->getElementType(), S); | ||||||||
| 13638 | } | ||||||||
| 13639 | |||||||||
| 13640 | static std::pair<ExprResult, ExprResult> | ||||||||
| 13641 | CorrectDelayedTyposInBinOp(Sema &S, BinaryOperatorKind Opc, Expr *LHSExpr, | ||||||||
| 13642 | Expr *RHSExpr) { | ||||||||
| 13643 | ExprResult LHS = LHSExpr, RHS = RHSExpr; | ||||||||
| 13644 | if (!S.getLangOpts().CPlusPlus) { | ||||||||
| 13645 | // C cannot handle TypoExpr nodes on either side of a binop because it | ||||||||
| 13646 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||||||
| 13647 | // been dealt with before checking the operands. | ||||||||
| 13648 | LHS = S.CorrectDelayedTyposInExpr(LHS); | ||||||||
| 13649 | RHS = S.CorrectDelayedTyposInExpr( | ||||||||
| 13650 | RHS, /*InitDecl=*/nullptr, /*RecoverUncorrectedTypos=*/false, | ||||||||
| 13651 | [Opc, LHS](Expr *E) { | ||||||||
| 13652 | if (Opc != BO_Assign) | ||||||||
| 13653 | return ExprResult(E); | ||||||||
| 13654 | // Avoid correcting the RHS to the same Expr as the LHS. | ||||||||
| 13655 | Decl *D = getDeclFromExpr(E); | ||||||||
| 13656 | return (D && D == getDeclFromExpr(LHS.get())) ? ExprError() : E; | ||||||||
| 13657 | }); | ||||||||
| 13658 | } | ||||||||
| 13659 | return std::make_pair(LHS, RHS); | ||||||||
| 13660 | } | ||||||||
| 13661 | |||||||||
| 13662 | /// Returns true if conversion between vectors of halfs and vectors of floats | ||||||||
| 13663 | /// is needed. | ||||||||
| 13664 | static bool needsConversionOfHalfVec(bool OpRequiresConversion, ASTContext &Ctx, | ||||||||
| 13665 | Expr *E0, Expr *E1 = nullptr) { | ||||||||
| 13666 | if (!OpRequiresConversion || Ctx.getLangOpts().NativeHalfType || | ||||||||
| 13667 | Ctx.getTargetInfo().useFP16ConversionIntrinsics()) | ||||||||
| 13668 | return false; | ||||||||
| 13669 | |||||||||
| 13670 | auto HasVectorOfHalfType = [&Ctx](Expr *E) { | ||||||||
| 13671 | QualType Ty = E->IgnoreImplicit()->getType(); | ||||||||
| 13672 | |||||||||
| 13673 | // Don't promote half precision neon vectors like float16x4_t in arm_neon.h | ||||||||
| 13674 | // to vectors of floats. Although the element type of the vectors is __fp16, | ||||||||
| 13675 | // the vectors shouldn't be treated as storage-only types. See the | ||||||||
| 13676 | // discussion here: https://reviews.llvm.org/rG825235c140e7 | ||||||||
| 13677 | if (const VectorType *VT = Ty->getAs<VectorType>()) { | ||||||||
| 13678 | if (VT->getVectorKind() == VectorType::NeonVector) | ||||||||
| 13679 | return false; | ||||||||
| 13680 | return VT->getElementType().getCanonicalType() == Ctx.HalfTy; | ||||||||
| 13681 | } | ||||||||
| 13682 | return false; | ||||||||
| 13683 | }; | ||||||||
| 13684 | |||||||||
| 13685 | return HasVectorOfHalfType(E0) && (!E1 || HasVectorOfHalfType(E1)); | ||||||||
| 13686 | } | ||||||||
| 13687 | |||||||||
| 13688 | /// CreateBuiltinBinOp - Creates a new built-in binary operation with | ||||||||
| 13689 | /// operator @p Opc at location @c TokLoc. This routine only supports | ||||||||
| 13690 | /// built-in operations; ActOnBinOp handles overloaded operators. | ||||||||
| 13691 | ExprResult Sema::CreateBuiltinBinOp(SourceLocation OpLoc, | ||||||||
| 13692 | BinaryOperatorKind Opc, | ||||||||
| 13693 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 13694 | if (getLangOpts().CPlusPlus11 && isa<InitListExpr>(RHSExpr)) { | ||||||||
| 13695 | // The syntax only allows initializer lists on the RHS of assignment, | ||||||||
| 13696 | // so we don't need to worry about accepting invalid code for | ||||||||
| 13697 | // non-assignment operators. | ||||||||
| 13698 | // C++11 5.17p9: | ||||||||
| 13699 | // The meaning of x = {v} [...] is that of x = T(v) [...]. The meaning | ||||||||
| 13700 | // of x = {} is x = T(). | ||||||||
| 13701 | InitializationKind Kind = InitializationKind::CreateDirectList( | ||||||||
| 13702 | RHSExpr->getBeginLoc(), RHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
| 13703 | InitializedEntity Entity = | ||||||||
| 13704 | InitializedEntity::InitializeTemporary(LHSExpr->getType()); | ||||||||
| 13705 | InitializationSequence InitSeq(*this, Entity, Kind, RHSExpr); | ||||||||
| 13706 | ExprResult Init = InitSeq.Perform(*this, Entity, Kind, RHSExpr); | ||||||||
| 13707 | if (Init.isInvalid()) | ||||||||
| 13708 | return Init; | ||||||||
| 13709 | RHSExpr = Init.get(); | ||||||||
| 13710 | } | ||||||||
| 13711 | |||||||||
| 13712 | ExprResult LHS = LHSExpr, RHS = RHSExpr; | ||||||||
| 13713 | QualType ResultTy; // Result type of the binary operator. | ||||||||
| 13714 | // The following two variables are used for compound assignment operators | ||||||||
| 13715 | QualType CompLHSTy; // Type of LHS after promotions for computation | ||||||||
| 13716 | QualType CompResultTy; // Type of computation result | ||||||||
| 13717 | ExprValueKind VK = VK_RValue; | ||||||||
| 13718 | ExprObjectKind OK = OK_Ordinary; | ||||||||
| 13719 | bool ConvertHalfVec = false; | ||||||||
| 13720 | |||||||||
| 13721 | std::tie(LHS, RHS) = CorrectDelayedTyposInBinOp(*this, Opc, LHSExpr, RHSExpr); | ||||||||
| 13722 | if (!LHS.isUsable() || !RHS.isUsable()) | ||||||||
| 13723 | return ExprError(); | ||||||||
| 13724 | |||||||||
| 13725 | if (getLangOpts().OpenCL) { | ||||||||
| 13726 | QualType LHSTy = LHSExpr->getType(); | ||||||||
| 13727 | QualType RHSTy = RHSExpr->getType(); | ||||||||
| 13728 | // OpenCLC v2.0 s6.13.11.1 allows atomic variables to be initialized by | ||||||||
| 13729 | // the ATOMIC_VAR_INIT macro. | ||||||||
| 13730 | if (LHSTy->isAtomicType() || RHSTy->isAtomicType()) { | ||||||||
| 13731 | SourceRange SR(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||||||
| 13732 | if (BO_Assign == Opc) | ||||||||
| 13733 | Diag(OpLoc, diag::err_opencl_atomic_init) << 0 << SR; | ||||||||
| 13734 | else | ||||||||
| 13735 | ResultTy = InvalidOperands(OpLoc, LHS, RHS); | ||||||||
| 13736 | return ExprError(); | ||||||||
| 13737 | } | ||||||||
| 13738 | |||||||||
| 13739 | // OpenCL special types - image, sampler, pipe, and blocks are to be used | ||||||||
| 13740 | // only with a builtin functions and therefore should be disallowed here. | ||||||||
| 13741 | if (LHSTy->isImageType() || RHSTy->isImageType() || | ||||||||
| 13742 | LHSTy->isSamplerT() || RHSTy->isSamplerT() || | ||||||||
| 13743 | LHSTy->isPipeType() || RHSTy->isPipeType() || | ||||||||
| 13744 | LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) { | ||||||||
| 13745 | ResultTy = InvalidOperands(OpLoc, LHS, RHS); | ||||||||
| 13746 | return ExprError(); | ||||||||
| 13747 | } | ||||||||
| 13748 | } | ||||||||
| 13749 | |||||||||
| 13750 | switch (Opc) { | ||||||||
| 13751 | case BO_Assign: | ||||||||
| 13752 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, QualType()); | ||||||||
| 13753 | if (getLangOpts().CPlusPlus && | ||||||||
| 13754 | LHS.get()->getObjectKind() != OK_ObjCProperty) { | ||||||||
| 13755 | VK = LHS.get()->getValueKind(); | ||||||||
| 13756 | OK = LHS.get()->getObjectKind(); | ||||||||
| 13757 | } | ||||||||
| 13758 | if (!ResultTy.isNull()) { | ||||||||
| 13759 | DiagnoseSelfAssignment(*this, LHS.get(), RHS.get(), OpLoc, true); | ||||||||
| 13760 | DiagnoseSelfMove(LHS.get(), RHS.get(), OpLoc); | ||||||||
| 13761 | |||||||||
| 13762 | // Avoid copying a block to the heap if the block is assigned to a local | ||||||||
| 13763 | // auto variable that is declared in the same scope as the block. This | ||||||||
| 13764 | // optimization is unsafe if the local variable is declared in an outer | ||||||||
| 13765 | // scope. For example: | ||||||||
| 13766 | // | ||||||||
| 13767 | // BlockTy b; | ||||||||
| 13768 | // { | ||||||||
| 13769 | // b = ^{...}; | ||||||||
| 13770 | // } | ||||||||
| 13771 | // // It is unsafe to invoke the block here if it wasn't copied to the | ||||||||
| 13772 | // // heap. | ||||||||
| 13773 | // b(); | ||||||||
| 13774 | |||||||||
| 13775 | if (auto *BE = dyn_cast<BlockExpr>(RHS.get()->IgnoreParens())) | ||||||||
| 13776 | if (auto *DRE = dyn_cast<DeclRefExpr>(LHS.get()->IgnoreParens())) | ||||||||
| 13777 | if (auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | ||||||||
| 13778 | if (VD->hasLocalStorage() && getCurScope()->isDeclScope(VD)) | ||||||||
| 13779 | BE->getBlockDecl()->setCanAvoidCopyToHeap(); | ||||||||
| 13780 | |||||||||
| 13781 | if (LHS.get()->getType().hasNonTrivialToPrimitiveCopyCUnion()) | ||||||||
| 13782 | checkNonTrivialCUnion(LHS.get()->getType(), LHS.get()->getExprLoc(), | ||||||||
| 13783 | NTCUC_Assignment, NTCUK_Copy); | ||||||||
| 13784 | } | ||||||||
| 13785 | RecordModifiableNonNullParam(*this, LHS.get()); | ||||||||
| 13786 | break; | ||||||||
| 13787 | case BO_PtrMemD: | ||||||||
| 13788 | case BO_PtrMemI: | ||||||||
| 13789 | ResultTy = CheckPointerToMemberOperands(LHS, RHS, VK, OpLoc, | ||||||||
| 13790 | Opc == BO_PtrMemI); | ||||||||
| 13791 | break; | ||||||||
| 13792 | case BO_Mul: | ||||||||
| 13793 | case BO_Div: | ||||||||
| 13794 | ConvertHalfVec = true; | ||||||||
| 13795 | ResultTy = CheckMultiplyDivideOperands(LHS, RHS, OpLoc, false, | ||||||||
| 13796 | Opc == BO_Div); | ||||||||
| 13797 | break; | ||||||||
| 13798 | case BO_Rem: | ||||||||
| 13799 | ResultTy = CheckRemainderOperands(LHS, RHS, OpLoc); | ||||||||
| 13800 | break; | ||||||||
| 13801 | case BO_Add: | ||||||||
| 13802 | ConvertHalfVec = true; | ||||||||
| 13803 | ResultTy = CheckAdditionOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13804 | break; | ||||||||
| 13805 | case BO_Sub: | ||||||||
| 13806 | ConvertHalfVec = true; | ||||||||
| 13807 | ResultTy = CheckSubtractionOperands(LHS, RHS, OpLoc); | ||||||||
| 13808 | break; | ||||||||
| 13809 | case BO_Shl: | ||||||||
| 13810 | case BO_Shr: | ||||||||
| 13811 | ResultTy = CheckShiftOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13812 | break; | ||||||||
| 13813 | case BO_LE: | ||||||||
| 13814 | case BO_LT: | ||||||||
| 13815 | case BO_GE: | ||||||||
| 13816 | case BO_GT: | ||||||||
| 13817 | ConvertHalfVec = true; | ||||||||
| 13818 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13819 | break; | ||||||||
| 13820 | case BO_EQ: | ||||||||
| 13821 | case BO_NE: | ||||||||
| 13822 | ConvertHalfVec = true; | ||||||||
| 13823 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13824 | break; | ||||||||
| 13825 | case BO_Cmp: | ||||||||
| 13826 | ConvertHalfVec = true; | ||||||||
| 13827 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13828 | assert(ResultTy.isNull() || ResultTy->getAsCXXRecordDecl())((ResultTy.isNull() || ResultTy->getAsCXXRecordDecl()) ? static_cast <void> (0) : __assert_fail ("ResultTy.isNull() || ResultTy->getAsCXXRecordDecl()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13828, __PRETTY_FUNCTION__)); | ||||||||
| 13829 | break; | ||||||||
| 13830 | case BO_And: | ||||||||
| 13831 | checkObjCPointerIntrospection(*this, LHS, RHS, OpLoc); | ||||||||
| 13832 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 13833 | case BO_Xor: | ||||||||
| 13834 | case BO_Or: | ||||||||
| 13835 | ResultTy = CheckBitwiseOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13836 | break; | ||||||||
| 13837 | case BO_LAnd: | ||||||||
| 13838 | case BO_LOr: | ||||||||
| 13839 | ConvertHalfVec = true; | ||||||||
| 13840 | ResultTy = CheckLogicalOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13841 | break; | ||||||||
| 13842 | case BO_MulAssign: | ||||||||
| 13843 | case BO_DivAssign: | ||||||||
| 13844 | ConvertHalfVec = true; | ||||||||
| 13845 | CompResultTy = CheckMultiplyDivideOperands(LHS, RHS, OpLoc, true, | ||||||||
| 13846 | Opc == BO_DivAssign); | ||||||||
| 13847 | CompLHSTy = CompResultTy; | ||||||||
| 13848 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
| 13849 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
| 13850 | break; | ||||||||
| 13851 | case BO_RemAssign: | ||||||||
| 13852 | CompResultTy = CheckRemainderOperands(LHS, RHS, OpLoc, true); | ||||||||
| 13853 | CompLHSTy = CompResultTy; | ||||||||
| 13854 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
| 13855 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
| 13856 | break; | ||||||||
| 13857 | case BO_AddAssign: | ||||||||
| 13858 | ConvertHalfVec = true; | ||||||||
| 13859 | CompResultTy = CheckAdditionOperands(LHS, RHS, OpLoc, Opc, &CompLHSTy); | ||||||||
| 13860 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
| 13861 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
| 13862 | break; | ||||||||
| 13863 | case BO_SubAssign: | ||||||||
| 13864 | ConvertHalfVec = true; | ||||||||
| 13865 | CompResultTy = CheckSubtractionOperands(LHS, RHS, OpLoc, &CompLHSTy); | ||||||||
| 13866 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
| 13867 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
| 13868 | break; | ||||||||
| 13869 | case BO_ShlAssign: | ||||||||
| 13870 | case BO_ShrAssign: | ||||||||
| 13871 | CompResultTy = CheckShiftOperands(LHS, RHS, OpLoc, Opc, true); | ||||||||
| 13872 | CompLHSTy = CompResultTy; | ||||||||
| 13873 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
| 13874 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
| 13875 | break; | ||||||||
| 13876 | case BO_AndAssign: | ||||||||
| 13877 | case BO_OrAssign: // fallthrough | ||||||||
| 13878 | DiagnoseSelfAssignment(*this, LHS.get(), RHS.get(), OpLoc, true); | ||||||||
| 13879 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 13880 | case BO_XorAssign: | ||||||||
| 13881 | CompResultTy = CheckBitwiseOperands(LHS, RHS, OpLoc, Opc); | ||||||||
| 13882 | CompLHSTy = CompResultTy; | ||||||||
| 13883 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||||||
| 13884 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||||||
| 13885 | break; | ||||||||
| 13886 | case BO_Comma: | ||||||||
| 13887 | ResultTy = CheckCommaOperands(*this, LHS, RHS, OpLoc); | ||||||||
| 13888 | if (getLangOpts().CPlusPlus && !RHS.isInvalid()) { | ||||||||
| 13889 | VK = RHS.get()->getValueKind(); | ||||||||
| 13890 | OK = RHS.get()->getObjectKind(); | ||||||||
| 13891 | } | ||||||||
| 13892 | break; | ||||||||
| 13893 | } | ||||||||
| 13894 | if (ResultTy.isNull() || LHS.isInvalid() || RHS.isInvalid()) | ||||||||
| 13895 | return ExprError(); | ||||||||
| 13896 | |||||||||
| 13897 | // Some of the binary operations require promoting operands of half vector to | ||||||||
| 13898 | // float vectors and truncating the result back to half vector. For now, we do | ||||||||
| 13899 | // this only when HalfArgsAndReturn is set (that is, when the target is arm or | ||||||||
| 13900 | // arm64). | ||||||||
| 13901 | assert(isVector(RHS.get()->getType(), Context.HalfTy) ==((isVector(RHS.get()->getType(), Context.HalfTy) == isVector (LHS.get()->getType(), Context.HalfTy) && "both sides are half vectors or neither sides are" ) ? static_cast<void> (0) : __assert_fail ("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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13903, __PRETTY_FUNCTION__)) | ||||||||
| 13902 | isVector(LHS.get()->getType(), Context.HalfTy) &&((isVector(RHS.get()->getType(), Context.HalfTy) == isVector (LHS.get()->getType(), Context.HalfTy) && "both sides are half vectors or neither sides are" ) ? static_cast<void> (0) : __assert_fail ("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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13903, __PRETTY_FUNCTION__)) | ||||||||
| 13903 | "both sides are half vectors or neither sides are")((isVector(RHS.get()->getType(), Context.HalfTy) == isVector (LHS.get()->getType(), Context.HalfTy) && "both sides are half vectors or neither sides are" ) ? static_cast<void> (0) : __assert_fail ("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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 13903, __PRETTY_FUNCTION__)); | ||||||||
| 13904 | ConvertHalfVec = | ||||||||
| 13905 | needsConversionOfHalfVec(ConvertHalfVec, Context, LHS.get(), RHS.get()); | ||||||||
| 13906 | |||||||||
| 13907 | // Check for array bounds violations for both sides of the BinaryOperator | ||||||||
| 13908 | CheckArrayAccess(LHS.get()); | ||||||||
| 13909 | CheckArrayAccess(RHS.get()); | ||||||||
| 13910 | |||||||||
| 13911 | if (const ObjCIsaExpr *OISA = dyn_cast<ObjCIsaExpr>(LHS.get()->IgnoreParenCasts())) { | ||||||||
| 13912 | NamedDecl *ObjectSetClass = LookupSingleName(TUScope, | ||||||||
| 13913 | &Context.Idents.get("object_setClass"), | ||||||||
| 13914 | SourceLocation(), LookupOrdinaryName); | ||||||||
| 13915 | if (ObjectSetClass && isa<ObjCIsaExpr>(LHS.get())) { | ||||||||
| 13916 | SourceLocation RHSLocEnd = getLocForEndOfToken(RHS.get()->getEndLoc()); | ||||||||
| 13917 | Diag(LHS.get()->getExprLoc(), diag::warn_objc_isa_assign) | ||||||||
| 13918 | << FixItHint::CreateInsertion(LHS.get()->getBeginLoc(), | ||||||||
| 13919 | "object_setClass(") | ||||||||
| 13920 | << FixItHint::CreateReplacement(SourceRange(OISA->getOpLoc(), OpLoc), | ||||||||
| 13921 | ",") | ||||||||
| 13922 | << FixItHint::CreateInsertion(RHSLocEnd, ")"); | ||||||||
| 13923 | } | ||||||||
| 13924 | else | ||||||||
| 13925 | Diag(LHS.get()->getExprLoc(), diag::warn_objc_isa_assign); | ||||||||
| 13926 | } | ||||||||
| 13927 | else if (const ObjCIvarRefExpr *OIRE = | ||||||||
| 13928 | dyn_cast<ObjCIvarRefExpr>(LHS.get()->IgnoreParenCasts())) | ||||||||
| 13929 | DiagnoseDirectIsaAccess(*this, OIRE, OpLoc, RHS.get()); | ||||||||
| 13930 | |||||||||
| 13931 | // Opc is not a compound assignment if CompResultTy is null. | ||||||||
| 13932 | if (CompResultTy.isNull()) { | ||||||||
| 13933 | if (ConvertHalfVec) | ||||||||
| 13934 | return convertHalfVecBinOp(*this, LHS, RHS, Opc, ResultTy, VK, OK, false, | ||||||||
| 13935 | OpLoc, CurFPFeatureOverrides()); | ||||||||
| 13936 | return BinaryOperator::Create(Context, LHS.get(), RHS.get(), Opc, ResultTy, | ||||||||
| 13937 | VK, OK, OpLoc, CurFPFeatureOverrides()); | ||||||||
| 13938 | } | ||||||||
| 13939 | |||||||||
| 13940 | // Handle compound assignments. | ||||||||
| 13941 | if (getLangOpts().CPlusPlus && LHS.get()->getObjectKind() != | ||||||||
| 13942 | OK_ObjCProperty) { | ||||||||
| 13943 | VK = VK_LValue; | ||||||||
| 13944 | OK = LHS.get()->getObjectKind(); | ||||||||
| 13945 | } | ||||||||
| 13946 | |||||||||
| 13947 | // The LHS is not converted to the result type for fixed-point compound | ||||||||
| 13948 | // assignment as the common type is computed on demand. Reset the CompLHSTy | ||||||||
| 13949 | // to the LHS type we would have gotten after unary conversions. | ||||||||
| 13950 | if (CompResultTy->isFixedPointType()) | ||||||||
| 13951 | CompLHSTy = UsualUnaryConversions(LHS.get()).get()->getType(); | ||||||||
| 13952 | |||||||||
| 13953 | if (ConvertHalfVec) | ||||||||
| 13954 | return convertHalfVecBinOp(*this, LHS, RHS, Opc, ResultTy, VK, OK, true, | ||||||||
| 13955 | OpLoc, CurFPFeatureOverrides()); | ||||||||
| 13956 | |||||||||
| 13957 | return CompoundAssignOperator::Create( | ||||||||
| 13958 | Context, LHS.get(), RHS.get(), Opc, ResultTy, VK, OK, OpLoc, | ||||||||
| 13959 | CurFPFeatureOverrides(), CompLHSTy, CompResultTy); | ||||||||
| 13960 | } | ||||||||
| 13961 | |||||||||
| 13962 | /// DiagnoseBitwisePrecedence - Emit a warning when bitwise and comparison | ||||||||
| 13963 | /// operators are mixed in a way that suggests that the programmer forgot that | ||||||||
| 13964 | /// comparison operators have higher precedence. The most typical example of | ||||||||
| 13965 | /// such code is "flags & 0x0020 != 0", which is equivalent to "flags & 1". | ||||||||
| 13966 | static void DiagnoseBitwisePrecedence(Sema &Self, BinaryOperatorKind Opc, | ||||||||
| 13967 | SourceLocation OpLoc, Expr *LHSExpr, | ||||||||
| 13968 | Expr *RHSExpr) { | ||||||||
| 13969 | BinaryOperator *LHSBO = dyn_cast<BinaryOperator>(LHSExpr); | ||||||||
| 13970 | BinaryOperator *RHSBO = dyn_cast<BinaryOperator>(RHSExpr); | ||||||||
| 13971 | |||||||||
| 13972 | // Check that one of the sides is a comparison operator and the other isn't. | ||||||||
| 13973 | bool isLeftComp = LHSBO && LHSBO->isComparisonOp(); | ||||||||
| 13974 | bool isRightComp = RHSBO && RHSBO->isComparisonOp(); | ||||||||
| 13975 | if (isLeftComp == isRightComp) | ||||||||
| 13976 | return; | ||||||||
| 13977 | |||||||||
| 13978 | // Bitwise operations are sometimes used as eager logical ops. | ||||||||
| 13979 | // Don't diagnose this. | ||||||||
| 13980 | bool isLeftBitwise = LHSBO && LHSBO->isBitwiseOp(); | ||||||||
| 13981 | bool isRightBitwise = RHSBO && RHSBO->isBitwiseOp(); | ||||||||
| 13982 | if (isLeftBitwise || isRightBitwise) | ||||||||
| 13983 | return; | ||||||||
| 13984 | |||||||||
| 13985 | SourceRange DiagRange = isLeftComp | ||||||||
| 13986 | ? SourceRange(LHSExpr->getBeginLoc(), OpLoc) | ||||||||
| 13987 | : SourceRange(OpLoc, RHSExpr->getEndLoc()); | ||||||||
| 13988 | StringRef OpStr = isLeftComp ? LHSBO->getOpcodeStr() : RHSBO->getOpcodeStr(); | ||||||||
| 13989 | SourceRange ParensRange = | ||||||||
| 13990 | isLeftComp | ||||||||
| 13991 | ? SourceRange(LHSBO->getRHS()->getBeginLoc(), RHSExpr->getEndLoc()) | ||||||||
| 13992 | : SourceRange(LHSExpr->getBeginLoc(), RHSBO->getLHS()->getEndLoc()); | ||||||||
| 13993 | |||||||||
| 13994 | Self.Diag(OpLoc, diag::warn_precedence_bitwise_rel) | ||||||||
| 13995 | << DiagRange << BinaryOperator::getOpcodeStr(Opc) << OpStr; | ||||||||
| 13996 | SuggestParentheses(Self, OpLoc, | ||||||||
| 13997 | Self.PDiag(diag::note_precedence_silence) << OpStr, | ||||||||
| 13998 | (isLeftComp ? LHSExpr : RHSExpr)->getSourceRange()); | ||||||||
| 13999 | SuggestParentheses(Self, OpLoc, | ||||||||
| 14000 | Self.PDiag(diag::note_precedence_bitwise_first) | ||||||||
| 14001 | << BinaryOperator::getOpcodeStr(Opc), | ||||||||
| 14002 | ParensRange); | ||||||||
| 14003 | } | ||||||||
| 14004 | |||||||||
| 14005 | /// It accepts a '&&' expr that is inside a '||' one. | ||||||||
| 14006 | /// Emit a diagnostic together with a fixit hint that wraps the '&&' expression | ||||||||
| 14007 | /// in parentheses. | ||||||||
| 14008 | static void | ||||||||
| 14009 | EmitDiagnosticForLogicalAndInLogicalOr(Sema &Self, SourceLocation OpLoc, | ||||||||
| 14010 | BinaryOperator *Bop) { | ||||||||
| 14011 | assert(Bop->getOpcode() == BO_LAnd)((Bop->getOpcode() == BO_LAnd) ? static_cast<void> ( 0) : __assert_fail ("Bop->getOpcode() == BO_LAnd", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14011, __PRETTY_FUNCTION__)); | ||||||||
| 14012 | Self.Diag(Bop->getOperatorLoc(), diag::warn_logical_and_in_logical_or) | ||||||||
| 14013 | << Bop->getSourceRange() << OpLoc; | ||||||||
| 14014 | SuggestParentheses(Self, Bop->getOperatorLoc(), | ||||||||
| 14015 | Self.PDiag(diag::note_precedence_silence) | ||||||||
| 14016 | << Bop->getOpcodeStr(), | ||||||||
| 14017 | Bop->getSourceRange()); | ||||||||
| 14018 | } | ||||||||
| 14019 | |||||||||
| 14020 | /// Returns true if the given expression can be evaluated as a constant | ||||||||
| 14021 | /// 'true'. | ||||||||
| 14022 | static bool EvaluatesAsTrue(Sema &S, Expr *E) { | ||||||||
| 14023 | bool Res; | ||||||||
| 14024 | return !E->isValueDependent() && | ||||||||
| 14025 | E->EvaluateAsBooleanCondition(Res, S.getASTContext()) && Res; | ||||||||
| 14026 | } | ||||||||
| 14027 | |||||||||
| 14028 | /// Returns true if the given expression can be evaluated as a constant | ||||||||
| 14029 | /// 'false'. | ||||||||
| 14030 | static bool EvaluatesAsFalse(Sema &S, Expr *E) { | ||||||||
| 14031 | bool Res; | ||||||||
| 14032 | return !E->isValueDependent() && | ||||||||
| 14033 | E->EvaluateAsBooleanCondition(Res, S.getASTContext()) && !Res; | ||||||||
| 14034 | } | ||||||||
| 14035 | |||||||||
| 14036 | /// Look for '&&' in the left hand of a '||' expr. | ||||||||
| 14037 | static void DiagnoseLogicalAndInLogicalOrLHS(Sema &S, SourceLocation OpLoc, | ||||||||
| 14038 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 14039 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(LHSExpr)) { | ||||||||
| 14040 | if (Bop->getOpcode() == BO_LAnd) { | ||||||||
| 14041 | // If it's "a && b || 0" don't warn since the precedence doesn't matter. | ||||||||
| 14042 | if (EvaluatesAsFalse(S, RHSExpr)) | ||||||||
| 14043 | return; | ||||||||
| 14044 | // If it's "1 && a || b" don't warn since the precedence doesn't matter. | ||||||||
| 14045 | if (!EvaluatesAsTrue(S, Bop->getLHS())) | ||||||||
| 14046 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, Bop); | ||||||||
| 14047 | } else if (Bop->getOpcode() == BO_LOr) { | ||||||||
| 14048 | if (BinaryOperator *RBop = dyn_cast<BinaryOperator>(Bop->getRHS())) { | ||||||||
| 14049 | // If it's "a || b && 1 || c" we didn't warn earlier for | ||||||||
| 14050 | // "a || b && 1", but warn now. | ||||||||
| 14051 | if (RBop->getOpcode() == BO_LAnd && EvaluatesAsTrue(S, RBop->getRHS())) | ||||||||
| 14052 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, RBop); | ||||||||
| 14053 | } | ||||||||
| 14054 | } | ||||||||
| 14055 | } | ||||||||
| 14056 | } | ||||||||
| 14057 | |||||||||
| 14058 | /// Look for '&&' in the right hand of a '||' expr. | ||||||||
| 14059 | static void DiagnoseLogicalAndInLogicalOrRHS(Sema &S, SourceLocation OpLoc, | ||||||||
| 14060 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 14061 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(RHSExpr)) { | ||||||||
| 14062 | if (Bop->getOpcode() == BO_LAnd) { | ||||||||
| 14063 | // If it's "0 || a && b" don't warn since the precedence doesn't matter. | ||||||||
| 14064 | if (EvaluatesAsFalse(S, LHSExpr)) | ||||||||
| 14065 | return; | ||||||||
| 14066 | // If it's "a || b && 1" don't warn since the precedence doesn't matter. | ||||||||
| 14067 | if (!EvaluatesAsTrue(S, Bop->getRHS())) | ||||||||
| 14068 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, Bop); | ||||||||
| 14069 | } | ||||||||
| 14070 | } | ||||||||
| 14071 | } | ||||||||
| 14072 | |||||||||
| 14073 | /// Look for bitwise op in the left or right hand of a bitwise op with | ||||||||
| 14074 | /// lower precedence and emit a diagnostic together with a fixit hint that wraps | ||||||||
| 14075 | /// the '&' expression in parentheses. | ||||||||
| 14076 | static void DiagnoseBitwiseOpInBitwiseOp(Sema &S, BinaryOperatorKind Opc, | ||||||||
| 14077 | SourceLocation OpLoc, Expr *SubExpr) { | ||||||||
| 14078 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(SubExpr)) { | ||||||||
| 14079 | if (Bop->isBitwiseOp() && Bop->getOpcode() < Opc) { | ||||||||
| 14080 | S.Diag(Bop->getOperatorLoc(), diag::warn_bitwise_op_in_bitwise_op) | ||||||||
| 14081 | << Bop->getOpcodeStr() << BinaryOperator::getOpcodeStr(Opc) | ||||||||
| 14082 | << Bop->getSourceRange() << OpLoc; | ||||||||
| 14083 | SuggestParentheses(S, Bop->getOperatorLoc(), | ||||||||
| 14084 | S.PDiag(diag::note_precedence_silence) | ||||||||
| 14085 | << Bop->getOpcodeStr(), | ||||||||
| 14086 | Bop->getSourceRange()); | ||||||||
| 14087 | } | ||||||||
| 14088 | } | ||||||||
| 14089 | } | ||||||||
| 14090 | |||||||||
| 14091 | static void DiagnoseAdditionInShift(Sema &S, SourceLocation OpLoc, | ||||||||
| 14092 | Expr *SubExpr, StringRef Shift) { | ||||||||
| 14093 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(SubExpr)) { | ||||||||
| 14094 | if (Bop->getOpcode() == BO_Add || Bop->getOpcode() == BO_Sub) { | ||||||||
| 14095 | StringRef Op = Bop->getOpcodeStr(); | ||||||||
| 14096 | S.Diag(Bop->getOperatorLoc(), diag::warn_addition_in_bitshift) | ||||||||
| 14097 | << Bop->getSourceRange() << OpLoc << Shift << Op; | ||||||||
| 14098 | SuggestParentheses(S, Bop->getOperatorLoc(), | ||||||||
| 14099 | S.PDiag(diag::note_precedence_silence) << Op, | ||||||||
| 14100 | Bop->getSourceRange()); | ||||||||
| 14101 | } | ||||||||
| 14102 | } | ||||||||
| 14103 | } | ||||||||
| 14104 | |||||||||
| 14105 | static void DiagnoseShiftCompare(Sema &S, SourceLocation OpLoc, | ||||||||
| 14106 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 14107 | CXXOperatorCallExpr *OCE = dyn_cast<CXXOperatorCallExpr>(LHSExpr); | ||||||||
| 14108 | if (!OCE) | ||||||||
| 14109 | return; | ||||||||
| 14110 | |||||||||
| 14111 | FunctionDecl *FD = OCE->getDirectCallee(); | ||||||||
| 14112 | if (!FD || !FD->isOverloadedOperator()) | ||||||||
| 14113 | return; | ||||||||
| 14114 | |||||||||
| 14115 | OverloadedOperatorKind Kind = FD->getOverloadedOperator(); | ||||||||
| 14116 | if (Kind != OO_LessLess && Kind != OO_GreaterGreater) | ||||||||
| 14117 | return; | ||||||||
| 14118 | |||||||||
| 14119 | S.Diag(OpLoc, diag::warn_overloaded_shift_in_comparison) | ||||||||
| 14120 | << LHSExpr->getSourceRange() << RHSExpr->getSourceRange() | ||||||||
| 14121 | << (Kind == OO_LessLess); | ||||||||
| 14122 | SuggestParentheses(S, OCE->getOperatorLoc(), | ||||||||
| 14123 | S.PDiag(diag::note_precedence_silence) | ||||||||
| 14124 | << (Kind == OO_LessLess ? "<<" : ">>"), | ||||||||
| 14125 | OCE->getSourceRange()); | ||||||||
| 14126 | SuggestParentheses( | ||||||||
| 14127 | S, OpLoc, S.PDiag(diag::note_evaluate_comparison_first), | ||||||||
| 14128 | SourceRange(OCE->getArg(1)->getBeginLoc(), RHSExpr->getEndLoc())); | ||||||||
| 14129 | } | ||||||||
| 14130 | |||||||||
| 14131 | /// DiagnoseBinOpPrecedence - Emit warnings for expressions with tricky | ||||||||
| 14132 | /// precedence. | ||||||||
| 14133 | static void DiagnoseBinOpPrecedence(Sema &Self, BinaryOperatorKind Opc, | ||||||||
| 14134 | SourceLocation OpLoc, Expr *LHSExpr, | ||||||||
| 14135 | Expr *RHSExpr){ | ||||||||
| 14136 | // Diagnose "arg1 'bitwise' arg2 'eq' arg3". | ||||||||
| 14137 | if (BinaryOperator::isBitwiseOp(Opc)) | ||||||||
| 14138 | DiagnoseBitwisePrecedence(Self, Opc, OpLoc, LHSExpr, RHSExpr); | ||||||||
| 14139 | |||||||||
| 14140 | // Diagnose "arg1 & arg2 | arg3" | ||||||||
| 14141 | if ((Opc == BO_Or || Opc == BO_Xor) && | ||||||||
| 14142 | !OpLoc.isMacroID()/* Don't warn in macros. */) { | ||||||||
| 14143 | DiagnoseBitwiseOpInBitwiseOp(Self, Opc, OpLoc, LHSExpr); | ||||||||
| 14144 | DiagnoseBitwiseOpInBitwiseOp(Self, Opc, OpLoc, RHSExpr); | ||||||||
| 14145 | } | ||||||||
| 14146 | |||||||||
| 14147 | // Warn about arg1 || arg2 && arg3, as GCC 4.3+ does. | ||||||||
| 14148 | // We don't warn for 'assert(a || b && "bad")' since this is safe. | ||||||||
| 14149 | if (Opc == BO_LOr && !OpLoc.isMacroID()/* Don't warn in macros. */) { | ||||||||
| 14150 | DiagnoseLogicalAndInLogicalOrLHS(Self, OpLoc, LHSExpr, RHSExpr); | ||||||||
| 14151 | DiagnoseLogicalAndInLogicalOrRHS(Self, OpLoc, LHSExpr, RHSExpr); | ||||||||
| 14152 | } | ||||||||
| 14153 | |||||||||
| 14154 | if ((Opc == BO_Shl && LHSExpr->getType()->isIntegralType(Self.getASTContext())) | ||||||||
| 14155 | || Opc == BO_Shr) { | ||||||||
| 14156 | StringRef Shift = BinaryOperator::getOpcodeStr(Opc); | ||||||||
| 14157 | DiagnoseAdditionInShift(Self, OpLoc, LHSExpr, Shift); | ||||||||
| 14158 | DiagnoseAdditionInShift(Self, OpLoc, RHSExpr, Shift); | ||||||||
| 14159 | } | ||||||||
| 14160 | |||||||||
| 14161 | // Warn on overloaded shift operators and comparisons, such as: | ||||||||
| 14162 | // cout << 5 == 4; | ||||||||
| 14163 | if (BinaryOperator::isComparisonOp(Opc)) | ||||||||
| 14164 | DiagnoseShiftCompare(Self, OpLoc, LHSExpr, RHSExpr); | ||||||||
| 14165 | } | ||||||||
| 14166 | |||||||||
| 14167 | // Binary Operators. 'Tok' is the token for the operator. | ||||||||
| 14168 | ExprResult Sema::ActOnBinOp(Scope *S, SourceLocation TokLoc, | ||||||||
| 14169 | tok::TokenKind Kind, | ||||||||
| 14170 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 14171 | BinaryOperatorKind Opc = ConvertTokenKindToBinaryOpcode(Kind); | ||||||||
| 14172 | assert(LHSExpr && "ActOnBinOp(): missing left expression")((LHSExpr && "ActOnBinOp(): missing left expression") ? static_cast<void> (0) : __assert_fail ("LHSExpr && \"ActOnBinOp(): missing left expression\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14172, __PRETTY_FUNCTION__)); | ||||||||
| 14173 | assert(RHSExpr && "ActOnBinOp(): missing right expression")((RHSExpr && "ActOnBinOp(): missing right expression" ) ? static_cast<void> (0) : __assert_fail ("RHSExpr && \"ActOnBinOp(): missing right expression\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14173, __PRETTY_FUNCTION__)); | ||||||||
| 14174 | |||||||||
| 14175 | // Emit warnings for tricky precedence issues, e.g. "bitfield & 0x4 == 0" | ||||||||
| 14176 | DiagnoseBinOpPrecedence(*this, Opc, TokLoc, LHSExpr, RHSExpr); | ||||||||
| 14177 | |||||||||
| 14178 | return BuildBinOp(S, TokLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14179 | } | ||||||||
| 14180 | |||||||||
| 14181 | /// Build an overloaded binary operator expression in the given scope. | ||||||||
| 14182 | static ExprResult BuildOverloadedBinOp(Sema &S, Scope *Sc, SourceLocation OpLoc, | ||||||||
| 14183 | BinaryOperatorKind Opc, | ||||||||
| 14184 | Expr *LHS, Expr *RHS) { | ||||||||
| 14185 | switch (Opc) { | ||||||||
| 14186 | case BO_Assign: | ||||||||
| 14187 | case BO_DivAssign: | ||||||||
| 14188 | case BO_RemAssign: | ||||||||
| 14189 | case BO_SubAssign: | ||||||||
| 14190 | case BO_AndAssign: | ||||||||
| 14191 | case BO_OrAssign: | ||||||||
| 14192 | case BO_XorAssign: | ||||||||
| 14193 | DiagnoseSelfAssignment(S, LHS, RHS, OpLoc, false); | ||||||||
| 14194 | CheckIdentityFieldAssignment(LHS, RHS, OpLoc, S); | ||||||||
| 14195 | break; | ||||||||
| 14196 | default: | ||||||||
| 14197 | break; | ||||||||
| 14198 | } | ||||||||
| 14199 | |||||||||
| 14200 | // Find all of the overloaded operators visible from this | ||||||||
| 14201 | // point. We perform both an operator-name lookup from the local | ||||||||
| 14202 | // scope and an argument-dependent lookup based on the types of | ||||||||
| 14203 | // the arguments. | ||||||||
| 14204 | UnresolvedSet<16> Functions; | ||||||||
| 14205 | OverloadedOperatorKind OverOp | ||||||||
| 14206 | = BinaryOperator::getOverloadedOperator(Opc); | ||||||||
| 14207 | if (Sc && OverOp != OO_None && OverOp != OO_Equal) | ||||||||
| 14208 | S.LookupOverloadedOperatorName(OverOp, Sc, LHS->getType(), | ||||||||
| 14209 | RHS->getType(), Functions); | ||||||||
| 14210 | |||||||||
| 14211 | // In C++20 onwards, we may have a second operator to look up. | ||||||||
| 14212 | if (S.getLangOpts().CPlusPlus20) { | ||||||||
| 14213 | if (OverloadedOperatorKind ExtraOp = getRewrittenOverloadedOperator(OverOp)) | ||||||||
| 14214 | S.LookupOverloadedOperatorName(ExtraOp, Sc, LHS->getType(), | ||||||||
| 14215 | RHS->getType(), Functions); | ||||||||
| 14216 | } | ||||||||
| 14217 | |||||||||
| 14218 | // Build the (potentially-overloaded, potentially-dependent) | ||||||||
| 14219 | // binary operation. | ||||||||
| 14220 | return S.CreateOverloadedBinOp(OpLoc, Opc, Functions, LHS, RHS); | ||||||||
| 14221 | } | ||||||||
| 14222 | |||||||||
| 14223 | ExprResult Sema::BuildBinOp(Scope *S, SourceLocation OpLoc, | ||||||||
| 14224 | BinaryOperatorKind Opc, | ||||||||
| 14225 | Expr *LHSExpr, Expr *RHSExpr) { | ||||||||
| 14226 | ExprResult LHS, RHS; | ||||||||
| 14227 | std::tie(LHS, RHS) = CorrectDelayedTyposInBinOp(*this, Opc, LHSExpr, RHSExpr); | ||||||||
| 14228 | if (!LHS.isUsable() || !RHS.isUsable()) | ||||||||
| 14229 | return ExprError(); | ||||||||
| 14230 | LHSExpr = LHS.get(); | ||||||||
| 14231 | RHSExpr = RHS.get(); | ||||||||
| 14232 | |||||||||
| 14233 | // We want to end up calling one of checkPseudoObjectAssignment | ||||||||
| 14234 | // (if the LHS is a pseudo-object), BuildOverloadedBinOp (if | ||||||||
| 14235 | // both expressions are overloadable or either is type-dependent), | ||||||||
| 14236 | // or CreateBuiltinBinOp (in any other case). We also want to get | ||||||||
| 14237 | // any placeholder types out of the way. | ||||||||
| 14238 | |||||||||
| 14239 | // Handle pseudo-objects in the LHS. | ||||||||
| 14240 | if (const BuiltinType *pty = LHSExpr->getType()->getAsPlaceholderType()) { | ||||||||
| 14241 | // Assignments with a pseudo-object l-value need special analysis. | ||||||||
| 14242 | if (pty->getKind() == BuiltinType::PseudoObject && | ||||||||
| 14243 | BinaryOperator::isAssignmentOp(Opc)) | ||||||||
| 14244 | return checkPseudoObjectAssignment(S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14245 | |||||||||
| 14246 | // Don't resolve overloads if the other type is overloadable. | ||||||||
| 14247 | if (getLangOpts().CPlusPlus && pty->getKind() == BuiltinType::Overload) { | ||||||||
| 14248 | // We can't actually test that if we still have a placeholder, | ||||||||
| 14249 | // though. Fortunately, none of the exceptions we see in that | ||||||||
| 14250 | // code below are valid when the LHS is an overload set. Note | ||||||||
| 14251 | // that an overload set can be dependently-typed, but it never | ||||||||
| 14252 | // instantiates to having an overloadable type. | ||||||||
| 14253 | ExprResult resolvedRHS = CheckPlaceholderExpr(RHSExpr); | ||||||||
| 14254 | if (resolvedRHS.isInvalid()) return ExprError(); | ||||||||
| 14255 | RHSExpr = resolvedRHS.get(); | ||||||||
| 14256 | |||||||||
| 14257 | if (RHSExpr->isTypeDependent() || | ||||||||
| 14258 | RHSExpr->getType()->isOverloadableType()) | ||||||||
| 14259 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14260 | } | ||||||||
| 14261 | |||||||||
| 14262 | // If we're instantiating "a.x < b" or "A::x < b" and 'x' names a function | ||||||||
| 14263 | // template, diagnose the missing 'template' keyword instead of diagnosing | ||||||||
| 14264 | // an invalid use of a bound member function. | ||||||||
| 14265 | // | ||||||||
| 14266 | // Note that "A::x < b" might be valid if 'b' has an overloadable type due | ||||||||
| 14267 | // to C++1z [over.over]/1.4, but we already checked for that case above. | ||||||||
| 14268 | if (Opc == BO_LT && inTemplateInstantiation() && | ||||||||
| 14269 | (pty->getKind() == BuiltinType::BoundMember || | ||||||||
| 14270 | pty->getKind() == BuiltinType::Overload)) { | ||||||||
| 14271 | auto *OE = dyn_cast<OverloadExpr>(LHSExpr); | ||||||||
| 14272 | if (OE && !OE->hasTemplateKeyword() && !OE->hasExplicitTemplateArgs() && | ||||||||
| 14273 | std::any_of(OE->decls_begin(), OE->decls_end(), [](NamedDecl *ND) { | ||||||||
| 14274 | return isa<FunctionTemplateDecl>(ND); | ||||||||
| 14275 | })) { | ||||||||
| 14276 | Diag(OE->getQualifier() ? OE->getQualifierLoc().getBeginLoc() | ||||||||
| 14277 | : OE->getNameLoc(), | ||||||||
| 14278 | diag::err_template_kw_missing) | ||||||||
| 14279 | << OE->getName().getAsString() << ""; | ||||||||
| 14280 | return ExprError(); | ||||||||
| 14281 | } | ||||||||
| 14282 | } | ||||||||
| 14283 | |||||||||
| 14284 | ExprResult LHS = CheckPlaceholderExpr(LHSExpr); | ||||||||
| 14285 | if (LHS.isInvalid()) return ExprError(); | ||||||||
| 14286 | LHSExpr = LHS.get(); | ||||||||
| 14287 | } | ||||||||
| 14288 | |||||||||
| 14289 | // Handle pseudo-objects in the RHS. | ||||||||
| 14290 | if (const BuiltinType *pty = RHSExpr->getType()->getAsPlaceholderType()) { | ||||||||
| 14291 | // An overload in the RHS can potentially be resolved by the type | ||||||||
| 14292 | // being assigned to. | ||||||||
| 14293 | if (Opc == BO_Assign && pty->getKind() == BuiltinType::Overload) { | ||||||||
| 14294 | if (getLangOpts().CPlusPlus && | ||||||||
| 14295 | (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent() || | ||||||||
| 14296 | LHSExpr->getType()->isOverloadableType())) | ||||||||
| 14297 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14298 | |||||||||
| 14299 | return CreateBuiltinBinOp(OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14300 | } | ||||||||
| 14301 | |||||||||
| 14302 | // Don't resolve overloads if the other type is overloadable. | ||||||||
| 14303 | if (getLangOpts().CPlusPlus && pty->getKind() == BuiltinType::Overload && | ||||||||
| 14304 | LHSExpr->getType()->isOverloadableType()) | ||||||||
| 14305 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14306 | |||||||||
| 14307 | ExprResult resolvedRHS = CheckPlaceholderExpr(RHSExpr); | ||||||||
| 14308 | if (!resolvedRHS.isUsable()) return ExprError(); | ||||||||
| 14309 | RHSExpr = resolvedRHS.get(); | ||||||||
| 14310 | } | ||||||||
| 14311 | |||||||||
| 14312 | if (getLangOpts().CPlusPlus) { | ||||||||
| 14313 | // If either expression is type-dependent, always build an | ||||||||
| 14314 | // overloaded op. | ||||||||
| 14315 | if (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent()) | ||||||||
| 14316 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14317 | |||||||||
| 14318 | // Otherwise, build an overloaded op if either expression has an | ||||||||
| 14319 | // overloadable type. | ||||||||
| 14320 | if (LHSExpr->getType()->isOverloadableType() || | ||||||||
| 14321 | RHSExpr->getType()->isOverloadableType()) | ||||||||
| 14322 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14323 | } | ||||||||
| 14324 | |||||||||
| 14325 | // Build a built-in binary operation. | ||||||||
| 14326 | return CreateBuiltinBinOp(OpLoc, Opc, LHSExpr, RHSExpr); | ||||||||
| 14327 | } | ||||||||
| 14328 | |||||||||
| 14329 | static bool isOverflowingIntegerType(ASTContext &Ctx, QualType T) { | ||||||||
| 14330 | if (T.isNull() || T->isDependentType()) | ||||||||
| 14331 | return false; | ||||||||
| 14332 | |||||||||
| 14333 | if (!T->isPromotableIntegerType()) | ||||||||
| 14334 | return true; | ||||||||
| 14335 | |||||||||
| 14336 | return Ctx.getIntWidth(T) >= Ctx.getIntWidth(Ctx.IntTy); | ||||||||
| 14337 | } | ||||||||
| 14338 | |||||||||
| 14339 | ExprResult Sema::CreateBuiltinUnaryOp(SourceLocation OpLoc, | ||||||||
| 14340 | UnaryOperatorKind Opc, | ||||||||
| 14341 | Expr *InputExpr) { | ||||||||
| 14342 | ExprResult Input = InputExpr; | ||||||||
| 14343 | ExprValueKind VK = VK_RValue; | ||||||||
| 14344 | ExprObjectKind OK = OK_Ordinary; | ||||||||
| 14345 | QualType resultType; | ||||||||
| 14346 | bool CanOverflow = false; | ||||||||
| 14347 | |||||||||
| 14348 | bool ConvertHalfVec = false; | ||||||||
| 14349 | if (getLangOpts().OpenCL) { | ||||||||
| 14350 | QualType Ty = InputExpr->getType(); | ||||||||
| 14351 | // The only legal unary operation for atomics is '&'. | ||||||||
| 14352 | if ((Opc != UO_AddrOf && Ty->isAtomicType()) || | ||||||||
| 14353 | // OpenCL special types - image, sampler, pipe, and blocks are to be used | ||||||||
| 14354 | // only with a builtin functions and therefore should be disallowed here. | ||||||||
| 14355 | (Ty->isImageType() || Ty->isSamplerT() || Ty->isPipeType() | ||||||||
| 14356 | || Ty->isBlockPointerType())) { | ||||||||
| 14357 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14358 | << InputExpr->getType() | ||||||||
| 14359 | << Input.get()->getSourceRange()); | ||||||||
| 14360 | } | ||||||||
| 14361 | } | ||||||||
| 14362 | |||||||||
| 14363 | switch (Opc) { | ||||||||
| 14364 | case UO_PreInc: | ||||||||
| 14365 | case UO_PreDec: | ||||||||
| 14366 | case UO_PostInc: | ||||||||
| 14367 | case UO_PostDec: | ||||||||
| 14368 | resultType = CheckIncrementDecrementOperand(*this, Input.get(), VK, OK, | ||||||||
| 14369 | OpLoc, | ||||||||
| 14370 | Opc == UO_PreInc || | ||||||||
| 14371 | Opc == UO_PostInc, | ||||||||
| 14372 | Opc == UO_PreInc || | ||||||||
| 14373 | Opc == UO_PreDec); | ||||||||
| 14374 | CanOverflow = isOverflowingIntegerType(Context, resultType); | ||||||||
| 14375 | break; | ||||||||
| 14376 | case UO_AddrOf: | ||||||||
| 14377 | resultType = CheckAddressOfOperand(Input, OpLoc); | ||||||||
| 14378 | CheckAddressOfNoDeref(InputExpr); | ||||||||
| 14379 | RecordModifiableNonNullParam(*this, InputExpr); | ||||||||
| 14380 | break; | ||||||||
| 14381 | case UO_Deref: { | ||||||||
| 14382 | Input = DefaultFunctionArrayLvalueConversion(Input.get()); | ||||||||
| 14383 | if (Input.isInvalid()) return ExprError(); | ||||||||
| 14384 | resultType = CheckIndirectionOperand(*this, Input.get(), VK, OpLoc); | ||||||||
| 14385 | break; | ||||||||
| 14386 | } | ||||||||
| 14387 | case UO_Plus: | ||||||||
| 14388 | case UO_Minus: | ||||||||
| 14389 | CanOverflow = Opc == UO_Minus && | ||||||||
| 14390 | isOverflowingIntegerType(Context, Input.get()->getType()); | ||||||||
| 14391 | Input = UsualUnaryConversions(Input.get()); | ||||||||
| 14392 | if (Input.isInvalid()) return ExprError(); | ||||||||
| 14393 | // Unary plus and minus require promoting an operand of half vector to a | ||||||||
| 14394 | // float vector and truncating the result back to a half vector. For now, we | ||||||||
| 14395 | // do this only when HalfArgsAndReturns is set (that is, when the target is | ||||||||
| 14396 | // arm or arm64). | ||||||||
| 14397 | ConvertHalfVec = needsConversionOfHalfVec(true, Context, Input.get()); | ||||||||
| 14398 | |||||||||
| 14399 | // If the operand is a half vector, promote it to a float vector. | ||||||||
| 14400 | if (ConvertHalfVec) | ||||||||
| 14401 | Input = convertVector(Input.get(), Context.FloatTy, *this); | ||||||||
| 14402 | resultType = Input.get()->getType(); | ||||||||
| 14403 | if (resultType->isDependentType()) | ||||||||
| 14404 | break; | ||||||||
| 14405 | if (resultType->isArithmeticType()) // C99 6.5.3.3p1 | ||||||||
| 14406 | break; | ||||||||
| 14407 | else if (resultType->isVectorType() && | ||||||||
| 14408 | // The z vector extensions don't allow + or - with bool vectors. | ||||||||
| 14409 | (!Context.getLangOpts().ZVector || | ||||||||
| 14410 | resultType->castAs<VectorType>()->getVectorKind() != | ||||||||
| 14411 | VectorType::AltiVecBool)) | ||||||||
| 14412 | break; | ||||||||
| 14413 | else if (getLangOpts().CPlusPlus && // C++ [expr.unary.op]p6 | ||||||||
| 14414 | Opc == UO_Plus && | ||||||||
| 14415 | resultType->isPointerType()) | ||||||||
| 14416 | break; | ||||||||
| 14417 | |||||||||
| 14418 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14419 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14420 | |||||||||
| 14421 | case UO_Not: // bitwise complement | ||||||||
| 14422 | Input = UsualUnaryConversions(Input.get()); | ||||||||
| 14423 | if (Input.isInvalid()) | ||||||||
| 14424 | return ExprError(); | ||||||||
| 14425 | resultType = Input.get()->getType(); | ||||||||
| 14426 | if (resultType->isDependentType()) | ||||||||
| 14427 | break; | ||||||||
| 14428 | // C99 6.5.3.3p1. We allow complex int and float as a GCC extension. | ||||||||
| 14429 | if (resultType->isComplexType() || resultType->isComplexIntegerType()) | ||||||||
| 14430 | // C99 does not support '~' for complex conjugation. | ||||||||
| 14431 | Diag(OpLoc, diag::ext_integer_complement_complex) | ||||||||
| 14432 | << resultType << Input.get()->getSourceRange(); | ||||||||
| 14433 | else if (resultType->hasIntegerRepresentation()) | ||||||||
| 14434 | break; | ||||||||
| 14435 | else if (resultType->isExtVectorType() && Context.getLangOpts().OpenCL) { | ||||||||
| 14436 | // OpenCL v1.1 s6.3.f: The bitwise operator not (~) does not operate | ||||||||
| 14437 | // on vector float types. | ||||||||
| 14438 | QualType T = resultType->castAs<ExtVectorType>()->getElementType(); | ||||||||
| 14439 | if (!T->isIntegerType()) | ||||||||
| 14440 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14441 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14442 | } else { | ||||||||
| 14443 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14444 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14445 | } | ||||||||
| 14446 | break; | ||||||||
| 14447 | |||||||||
| 14448 | case UO_LNot: // logical negation | ||||||||
| 14449 | // Unlike +/-/~, integer promotions aren't done here (C99 6.5.3.3p5). | ||||||||
| 14450 | Input = DefaultFunctionArrayLvalueConversion(Input.get()); | ||||||||
| 14451 | if (Input.isInvalid()) return ExprError(); | ||||||||
| 14452 | resultType = Input.get()->getType(); | ||||||||
| 14453 | |||||||||
| 14454 | // Though we still have to promote half FP to float... | ||||||||
| 14455 | if (resultType->isHalfType() && !Context.getLangOpts().NativeHalfType) { | ||||||||
| 14456 | Input = ImpCastExprToType(Input.get(), Context.FloatTy, CK_FloatingCast).get(); | ||||||||
| 14457 | resultType = Context.FloatTy; | ||||||||
| 14458 | } | ||||||||
| 14459 | |||||||||
| 14460 | if (resultType->isDependentType()) | ||||||||
| 14461 | break; | ||||||||
| 14462 | if (resultType->isScalarType() && !isScopedEnumerationType(resultType)) { | ||||||||
| 14463 | // C99 6.5.3.3p1: ok, fallthrough; | ||||||||
| 14464 | if (Context.getLangOpts().CPlusPlus) { | ||||||||
| 14465 | // C++03 [expr.unary.op]p8, C++0x [expr.unary.op]p9: | ||||||||
| 14466 | // operand contextually converted to bool. | ||||||||
| 14467 | Input = ImpCastExprToType(Input.get(), Context.BoolTy, | ||||||||
| 14468 | ScalarTypeToBooleanCastKind(resultType)); | ||||||||
| 14469 | } else if (Context.getLangOpts().OpenCL && | ||||||||
| 14470 | Context.getLangOpts().OpenCLVersion < 120) { | ||||||||
| 14471 | // OpenCL v1.1 6.3.h: The logical operator not (!) does not | ||||||||
| 14472 | // operate on scalar float types. | ||||||||
| 14473 | if (!resultType->isIntegerType() && !resultType->isPointerType()) | ||||||||
| 14474 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14475 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14476 | } | ||||||||
| 14477 | } else if (resultType->isExtVectorType()) { | ||||||||
| 14478 | if (Context.getLangOpts().OpenCL && | ||||||||
| 14479 | Context.getLangOpts().OpenCLVersion < 120 && | ||||||||
| 14480 | !Context.getLangOpts().OpenCLCPlusPlus) { | ||||||||
| 14481 | // OpenCL v1.1 6.3.h: The logical operator not (!) does not | ||||||||
| 14482 | // operate on vector float types. | ||||||||
| 14483 | QualType T = resultType->castAs<ExtVectorType>()->getElementType(); | ||||||||
| 14484 | if (!T->isIntegerType()) | ||||||||
| 14485 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14486 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14487 | } | ||||||||
| 14488 | // Vector logical not returns the signed variant of the operand type. | ||||||||
| 14489 | resultType = GetSignedVectorType(resultType); | ||||||||
| 14490 | break; | ||||||||
| 14491 | } else if (Context.getLangOpts().CPlusPlus && resultType->isVectorType()) { | ||||||||
| 14492 | const VectorType *VTy = resultType->castAs<VectorType>(); | ||||||||
| 14493 | if (VTy->getVectorKind() != VectorType::GenericVector) | ||||||||
| 14494 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14495 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14496 | |||||||||
| 14497 | // Vector logical not returns the signed variant of the operand type. | ||||||||
| 14498 | resultType = GetSignedVectorType(resultType); | ||||||||
| 14499 | break; | ||||||||
| 14500 | } else { | ||||||||
| 14501 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||||||
| 14502 | << resultType << Input.get()->getSourceRange()); | ||||||||
| 14503 | } | ||||||||
| 14504 | |||||||||
| 14505 | // LNot always has type int. C99 6.5.3.3p5. | ||||||||
| 14506 | // In C++, it's bool. C++ 5.3.1p8 | ||||||||
| 14507 | resultType = Context.getLogicalOperationType(); | ||||||||
| 14508 | break; | ||||||||
| 14509 | case UO_Real: | ||||||||
| 14510 | case UO_Imag: | ||||||||
| 14511 | resultType = CheckRealImagOperand(*this, Input, OpLoc, Opc == UO_Real); | ||||||||
| 14512 | // _Real maps ordinary l-values into ordinary l-values. _Imag maps ordinary | ||||||||
| 14513 | // complex l-values to ordinary l-values and all other values to r-values. | ||||||||
| 14514 | if (Input.isInvalid()) return ExprError(); | ||||||||
| 14515 | if (Opc == UO_Real || Input.get()->getType()->isAnyComplexType()) { | ||||||||
| 14516 | if (Input.get()->getValueKind() != VK_RValue && | ||||||||
| 14517 | Input.get()->getObjectKind() == OK_Ordinary) | ||||||||
| 14518 | VK = Input.get()->getValueKind(); | ||||||||
| 14519 | } else if (!getLangOpts().CPlusPlus) { | ||||||||
| 14520 | // In C, a volatile scalar is read by __imag. In C++, it is not. | ||||||||
| 14521 | Input = DefaultLvalueConversion(Input.get()); | ||||||||
| 14522 | } | ||||||||
| 14523 | break; | ||||||||
| 14524 | case UO_Extension: | ||||||||
| 14525 | resultType = Input.get()->getType(); | ||||||||
| 14526 | VK = Input.get()->getValueKind(); | ||||||||
| 14527 | OK = Input.get()->getObjectKind(); | ||||||||
| 14528 | break; | ||||||||
| 14529 | case UO_Coawait: | ||||||||
| 14530 | // It's unnecessary to represent the pass-through operator co_await in the | ||||||||
| 14531 | // AST; just return the input expression instead. | ||||||||
| 14532 | assert(!Input.get()->getType()->isDependentType() &&((!Input.get()->getType()->isDependentType() && "the co_await expression must be non-dependant before " "building operator co_await" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14534, __PRETTY_FUNCTION__)) | ||||||||
| 14533 | "the co_await expression must be non-dependant before "((!Input.get()->getType()->isDependentType() && "the co_await expression must be non-dependant before " "building operator co_await" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14534, __PRETTY_FUNCTION__)) | ||||||||
| 14534 | "building operator co_await")((!Input.get()->getType()->isDependentType() && "the co_await expression must be non-dependant before " "building operator co_await" ) ? static_cast<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-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14534, __PRETTY_FUNCTION__)); | ||||||||
| 14535 | return Input; | ||||||||
| 14536 | } | ||||||||
| 14537 | if (resultType.isNull() || Input.isInvalid()) | ||||||||
| 14538 | return ExprError(); | ||||||||
| 14539 | |||||||||
| 14540 | // Check for array bounds violations in the operand of the UnaryOperator, | ||||||||
| 14541 | // except for the '*' and '&' operators that have to be handled specially | ||||||||
| 14542 | // by CheckArrayAccess (as there are special cases like &array[arraysize] | ||||||||
| 14543 | // that are explicitly defined as valid by the standard). | ||||||||
| 14544 | if (Opc != UO_AddrOf && Opc != UO_Deref) | ||||||||
| 14545 | CheckArrayAccess(Input.get()); | ||||||||
| 14546 | |||||||||
| 14547 | auto *UO = | ||||||||
| 14548 | UnaryOperator::Create(Context, Input.get(), Opc, resultType, VK, OK, | ||||||||
| 14549 | OpLoc, CanOverflow, CurFPFeatureOverrides()); | ||||||||
| 14550 | |||||||||
| 14551 | if (Opc == UO_Deref && UO->getType()->hasAttr(attr::NoDeref) && | ||||||||
| 14552 | !isa<ArrayType>(UO->getType().getDesugaredType(Context))) | ||||||||
| 14553 | ExprEvalContexts.back().PossibleDerefs.insert(UO); | ||||||||
| 14554 | |||||||||
| 14555 | // Convert the result back to a half vector. | ||||||||
| 14556 | if (ConvertHalfVec) | ||||||||
| 14557 | return convertVector(UO, Context.HalfTy, *this); | ||||||||
| 14558 | return UO; | ||||||||
| 14559 | } | ||||||||
| 14560 | |||||||||
| 14561 | /// Determine whether the given expression is a qualified member | ||||||||
| 14562 | /// access expression, of a form that could be turned into a pointer to member | ||||||||
| 14563 | /// with the address-of operator. | ||||||||
| 14564 | bool Sema::isQualifiedMemberAccess(Expr *E) { | ||||||||
| 14565 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||||||
| 14566 | if (!DRE->getQualifier()) | ||||||||
| 14567 | return false; | ||||||||
| 14568 | |||||||||
| 14569 | ValueDecl *VD = DRE->getDecl(); | ||||||||
| 14570 | if (!VD->isCXXClassMember()) | ||||||||
| 14571 | return false; | ||||||||
| 14572 | |||||||||
| 14573 | if (isa<FieldDecl>(VD) || isa<IndirectFieldDecl>(VD)) | ||||||||
| 14574 | return true; | ||||||||
| 14575 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(VD)) | ||||||||
| 14576 | return Method->isInstance(); | ||||||||
| 14577 | |||||||||
| 14578 | return false; | ||||||||
| 14579 | } | ||||||||
| 14580 | |||||||||
| 14581 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(E)) { | ||||||||
| 14582 | if (!ULE->getQualifier()) | ||||||||
| 14583 | return false; | ||||||||
| 14584 | |||||||||
| 14585 | for (NamedDecl *D : ULE->decls()) { | ||||||||
| 14586 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { | ||||||||
| 14587 | if (Method->isInstance()) | ||||||||
| 14588 | return true; | ||||||||
| 14589 | } else { | ||||||||
| 14590 | // Overload set does not contain methods. | ||||||||
| 14591 | break; | ||||||||
| 14592 | } | ||||||||
| 14593 | } | ||||||||
| 14594 | |||||||||
| 14595 | return false; | ||||||||
| 14596 | } | ||||||||
| 14597 | |||||||||
| 14598 | return false; | ||||||||
| 14599 | } | ||||||||
| 14600 | |||||||||
| 14601 | ExprResult Sema::BuildUnaryOp(Scope *S, SourceLocation OpLoc, | ||||||||
| 14602 | UnaryOperatorKind Opc, Expr *Input) { | ||||||||
| 14603 | // First things first: handle placeholders so that the | ||||||||
| 14604 | // overloaded-operator check considers the right type. | ||||||||
| 14605 | if (const BuiltinType *pty = Input->getType()->getAsPlaceholderType()) { | ||||||||
| 14606 | // Increment and decrement of pseudo-object references. | ||||||||
| 14607 | if (pty->getKind() == BuiltinType::PseudoObject && | ||||||||
| 14608 | UnaryOperator::isIncrementDecrementOp(Opc)) | ||||||||
| 14609 | return checkPseudoObjectIncDec(S, OpLoc, Opc, Input); | ||||||||
| 14610 | |||||||||
| 14611 | // extension is always a builtin operator. | ||||||||
| 14612 | if (Opc == UO_Extension) | ||||||||
| 14613 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||||||
| 14614 | |||||||||
| 14615 | // & gets special logic for several kinds of placeholder. | ||||||||
| 14616 | // The builtin code knows what to do. | ||||||||
| 14617 | if (Opc == UO_AddrOf && | ||||||||
| 14618 | (pty->getKind() == BuiltinType::Overload || | ||||||||
| 14619 | pty->getKind() == BuiltinType::UnknownAny || | ||||||||
| 14620 | pty->getKind() == BuiltinType::BoundMember)) | ||||||||
| 14621 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||||||
| 14622 | |||||||||
| 14623 | // Anything else needs to be handled now. | ||||||||
| 14624 | ExprResult Result = CheckPlaceholderExpr(Input); | ||||||||
| 14625 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 14626 | Input = Result.get(); | ||||||||
| 14627 | } | ||||||||
| 14628 | |||||||||
| 14629 | if (getLangOpts().CPlusPlus && Input->getType()->isOverloadableType() && | ||||||||
| 14630 | UnaryOperator::getOverloadedOperator(Opc) != OO_None && | ||||||||
| 14631 | !(Opc == UO_AddrOf && isQualifiedMemberAccess(Input))) { | ||||||||
| 14632 | // Find all of the overloaded operators visible from this | ||||||||
| 14633 | // point. We perform both an operator-name lookup from the local | ||||||||
| 14634 | // scope and an argument-dependent lookup based on the types of | ||||||||
| 14635 | // the arguments. | ||||||||
| 14636 | UnresolvedSet<16> Functions; | ||||||||
| 14637 | OverloadedOperatorKind OverOp = UnaryOperator::getOverloadedOperator(Opc); | ||||||||
| 14638 | if (S && OverOp != OO_None) | ||||||||
| 14639 | LookupOverloadedOperatorName(OverOp, S, Input->getType(), QualType(), | ||||||||
| 14640 | Functions); | ||||||||
| 14641 | |||||||||
| 14642 | return CreateOverloadedUnaryOp(OpLoc, Opc, Functions, Input); | ||||||||
| 14643 | } | ||||||||
| 14644 | |||||||||
| 14645 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||||||
| 14646 | } | ||||||||
| 14647 | |||||||||
| 14648 | // Unary Operators. 'Tok' is the token for the operator. | ||||||||
| 14649 | ExprResult Sema::ActOnUnaryOp(Scope *S, SourceLocation OpLoc, | ||||||||
| 14650 | tok::TokenKind Op, Expr *Input) { | ||||||||
| 14651 | return BuildUnaryOp(S, OpLoc, ConvertTokenKindToUnaryOpcode(Op), Input); | ||||||||
| 14652 | } | ||||||||
| 14653 | |||||||||
| 14654 | /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". | ||||||||
| 14655 | ExprResult Sema::ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, | ||||||||
| 14656 | LabelDecl *TheDecl) { | ||||||||
| 14657 | TheDecl->markUsed(Context); | ||||||||
| 14658 | // Create the AST node. The address of a label always has type 'void*'. | ||||||||
| 14659 | return new (Context) AddrLabelExpr(OpLoc, LabLoc, TheDecl, | ||||||||
| 14660 | Context.getPointerType(Context.VoidTy)); | ||||||||
| 14661 | } | ||||||||
| 14662 | |||||||||
| 14663 | void Sema::ActOnStartStmtExpr() { | ||||||||
| 14664 | PushExpressionEvaluationContext(ExprEvalContexts.back().Context); | ||||||||
| 14665 | } | ||||||||
| 14666 | |||||||||
| 14667 | void Sema::ActOnStmtExprError() { | ||||||||
| 14668 | // Note that function is also called by TreeTransform when leaving a | ||||||||
| 14669 | // StmtExpr scope without rebuilding anything. | ||||||||
| 14670 | |||||||||
| 14671 | DiscardCleanupsInEvaluationContext(); | ||||||||
| 14672 | PopExpressionEvaluationContext(); | ||||||||
| 14673 | } | ||||||||
| 14674 | |||||||||
| 14675 | ExprResult Sema::ActOnStmtExpr(Scope *S, SourceLocation LPLoc, Stmt *SubStmt, | ||||||||
| 14676 | SourceLocation RPLoc) { | ||||||||
| 14677 | return BuildStmtExpr(LPLoc, SubStmt, RPLoc, getTemplateDepth(S)); | ||||||||
| 14678 | } | ||||||||
| 14679 | |||||||||
| 14680 | ExprResult Sema::BuildStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, | ||||||||
| 14681 | SourceLocation RPLoc, unsigned TemplateDepth) { | ||||||||
| 14682 | assert(SubStmt && isa<CompoundStmt>(SubStmt) && "Invalid action invocation!")((SubStmt && isa<CompoundStmt>(SubStmt) && "Invalid action invocation!") ? static_cast<void> (0) : __assert_fail ("SubStmt && isa<CompoundStmt>(SubStmt) && \"Invalid action invocation!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14682, __PRETTY_FUNCTION__)); | ||||||||
| 14683 | CompoundStmt *Compound = cast<CompoundStmt>(SubStmt); | ||||||||
| 14684 | |||||||||
| 14685 | if (hasAnyUnrecoverableErrorsInThisFunction()) | ||||||||
| 14686 | DiscardCleanupsInEvaluationContext(); | ||||||||
| 14687 | assert(!Cleanup.exprNeedsCleanups() &&((!Cleanup.exprNeedsCleanups() && "cleanups within StmtExpr not correctly bound!" ) ? static_cast<void> (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within StmtExpr not correctly bound!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14688, __PRETTY_FUNCTION__)) | ||||||||
| 14688 | "cleanups within StmtExpr not correctly bound!")((!Cleanup.exprNeedsCleanups() && "cleanups within StmtExpr not correctly bound!" ) ? static_cast<void> (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within StmtExpr not correctly bound!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14688, __PRETTY_FUNCTION__)); | ||||||||
| 14689 | PopExpressionEvaluationContext(); | ||||||||
| 14690 | |||||||||
| 14691 | // FIXME: there are a variety of strange constraints to enforce here, for | ||||||||
| 14692 | // example, it is not possible to goto into a stmt expression apparently. | ||||||||
| 14693 | // More semantic analysis is needed. | ||||||||
| 14694 | |||||||||
| 14695 | // If there are sub-stmts in the compound stmt, take the type of the last one | ||||||||
| 14696 | // as the type of the stmtexpr. | ||||||||
| 14697 | QualType Ty = Context.VoidTy; | ||||||||
| 14698 | bool StmtExprMayBindToTemp = false; | ||||||||
| 14699 | if (!Compound->body_empty()) { | ||||||||
| 14700 | // For GCC compatibility we get the last Stmt excluding trailing NullStmts. | ||||||||
| 14701 | if (const auto *LastStmt = | ||||||||
| 14702 | dyn_cast<ValueStmt>(Compound->getStmtExprResult())) { | ||||||||
| 14703 | if (const Expr *Value = LastStmt->getExprStmt()) { | ||||||||
| 14704 | StmtExprMayBindToTemp = true; | ||||||||
| 14705 | Ty = Value->getType(); | ||||||||
| 14706 | } | ||||||||
| 14707 | } | ||||||||
| 14708 | } | ||||||||
| 14709 | |||||||||
| 14710 | // FIXME: Check that expression type is complete/non-abstract; statement | ||||||||
| 14711 | // expressions are not lvalues. | ||||||||
| 14712 | Expr *ResStmtExpr = | ||||||||
| 14713 | new (Context) StmtExpr(Compound, Ty, LPLoc, RPLoc, TemplateDepth); | ||||||||
| 14714 | if (StmtExprMayBindToTemp) | ||||||||
| 14715 | return MaybeBindToTemporary(ResStmtExpr); | ||||||||
| 14716 | return ResStmtExpr; | ||||||||
| 14717 | } | ||||||||
| 14718 | |||||||||
| 14719 | ExprResult Sema::ActOnStmtExprResult(ExprResult ER) { | ||||||||
| 14720 | if (ER.isInvalid()) | ||||||||
| 14721 | return ExprError(); | ||||||||
| 14722 | |||||||||
| 14723 | // Do function/array conversion on the last expression, but not | ||||||||
| 14724 | // lvalue-to-rvalue. However, initialize an unqualified type. | ||||||||
| 14725 | ER = DefaultFunctionArrayConversion(ER.get()); | ||||||||
| 14726 | if (ER.isInvalid()) | ||||||||
| 14727 | return ExprError(); | ||||||||
| 14728 | Expr *E = ER.get(); | ||||||||
| 14729 | |||||||||
| 14730 | if (E->isTypeDependent()) | ||||||||
| 14731 | return E; | ||||||||
| 14732 | |||||||||
| 14733 | // In ARC, if the final expression ends in a consume, splice | ||||||||
| 14734 | // the consume out and bind it later. In the alternate case | ||||||||
| 14735 | // (when dealing with a retainable type), the result | ||||||||
| 14736 | // initialization will create a produce. In both cases the | ||||||||
| 14737 | // result will be +1, and we'll need to balance that out with | ||||||||
| 14738 | // a bind. | ||||||||
| 14739 | auto *Cast = dyn_cast<ImplicitCastExpr>(E); | ||||||||
| 14740 | if (Cast && Cast->getCastKind() == CK_ARCConsumeObject) | ||||||||
| 14741 | return Cast->getSubExpr(); | ||||||||
| 14742 | |||||||||
| 14743 | // FIXME: Provide a better location for the initialization. | ||||||||
| 14744 | return PerformCopyInitialization( | ||||||||
| 14745 | InitializedEntity::InitializeStmtExprResult( | ||||||||
| 14746 | E->getBeginLoc(), E->getType().getUnqualifiedType()), | ||||||||
| 14747 | SourceLocation(), E); | ||||||||
| 14748 | } | ||||||||
| 14749 | |||||||||
| 14750 | ExprResult Sema::BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, | ||||||||
| 14751 | TypeSourceInfo *TInfo, | ||||||||
| 14752 | ArrayRef<OffsetOfComponent> Components, | ||||||||
| 14753 | SourceLocation RParenLoc) { | ||||||||
| 14754 | QualType ArgTy = TInfo->getType(); | ||||||||
| 14755 | bool Dependent = ArgTy->isDependentType(); | ||||||||
| 14756 | SourceRange TypeRange = TInfo->getTypeLoc().getLocalSourceRange(); | ||||||||
| 14757 | |||||||||
| 14758 | // We must have at least one component that refers to the type, and the first | ||||||||
| 14759 | // one is known to be a field designator. Verify that the ArgTy represents | ||||||||
| 14760 | // a struct/union/class. | ||||||||
| 14761 | if (!Dependent && !ArgTy->isRecordType()) | ||||||||
| 14762 | return ExprError(Diag(BuiltinLoc, diag::err_offsetof_record_type) | ||||||||
| 14763 | << ArgTy << TypeRange); | ||||||||
| 14764 | |||||||||
| 14765 | // Type must be complete per C99 7.17p3 because a declaring a variable | ||||||||
| 14766 | // with an incomplete type would be ill-formed. | ||||||||
| 14767 | if (!Dependent | ||||||||
| 14768 | && RequireCompleteType(BuiltinLoc, ArgTy, | ||||||||
| 14769 | diag::err_offsetof_incomplete_type, TypeRange)) | ||||||||
| 14770 | return ExprError(); | ||||||||
| 14771 | |||||||||
| 14772 | bool DidWarnAboutNonPOD = false; | ||||||||
| 14773 | QualType CurrentType = ArgTy; | ||||||||
| 14774 | SmallVector<OffsetOfNode, 4> Comps; | ||||||||
| 14775 | SmallVector<Expr*, 4> Exprs; | ||||||||
| 14776 | for (const OffsetOfComponent &OC : Components) { | ||||||||
| 14777 | if (OC.isBrackets) { | ||||||||
| 14778 | // Offset of an array sub-field. TODO: Should we allow vector elements? | ||||||||
| 14779 | if (!CurrentType->isDependentType()) { | ||||||||
| 14780 | const ArrayType *AT = Context.getAsArrayType(CurrentType); | ||||||||
| 14781 | if(!AT) | ||||||||
| 14782 | return ExprError(Diag(OC.LocEnd, diag::err_offsetof_array_type) | ||||||||
| 14783 | << CurrentType); | ||||||||
| 14784 | CurrentType = AT->getElementType(); | ||||||||
| 14785 | } else | ||||||||
| 14786 | CurrentType = Context.DependentTy; | ||||||||
| 14787 | |||||||||
| 14788 | ExprResult IdxRval = DefaultLvalueConversion(static_cast<Expr*>(OC.U.E)); | ||||||||
| 14789 | if (IdxRval.isInvalid()) | ||||||||
| 14790 | return ExprError(); | ||||||||
| 14791 | Expr *Idx = IdxRval.get(); | ||||||||
| 14792 | |||||||||
| 14793 | // The expression must be an integral expression. | ||||||||
| 14794 | // FIXME: An integral constant expression? | ||||||||
| 14795 | if (!Idx->isTypeDependent() && !Idx->isValueDependent() && | ||||||||
| 14796 | !Idx->getType()->isIntegerType()) | ||||||||
| 14797 | return ExprError( | ||||||||
| 14798 | Diag(Idx->getBeginLoc(), diag::err_typecheck_subscript_not_integer) | ||||||||
| 14799 | << Idx->getSourceRange()); | ||||||||
| 14800 | |||||||||
| 14801 | // Record this array index. | ||||||||
| 14802 | Comps.push_back(OffsetOfNode(OC.LocStart, Exprs.size(), OC.LocEnd)); | ||||||||
| 14803 | Exprs.push_back(Idx); | ||||||||
| 14804 | continue; | ||||||||
| 14805 | } | ||||||||
| 14806 | |||||||||
| 14807 | // Offset of a field. | ||||||||
| 14808 | if (CurrentType->isDependentType()) { | ||||||||
| 14809 | // We have the offset of a field, but we can't look into the dependent | ||||||||
| 14810 | // type. Just record the identifier of the field. | ||||||||
| 14811 | Comps.push_back(OffsetOfNode(OC.LocStart, OC.U.IdentInfo, OC.LocEnd)); | ||||||||
| 14812 | CurrentType = Context.DependentTy; | ||||||||
| 14813 | continue; | ||||||||
| 14814 | } | ||||||||
| 14815 | |||||||||
| 14816 | // We need to have a complete type to look into. | ||||||||
| 14817 | if (RequireCompleteType(OC.LocStart, CurrentType, | ||||||||
| 14818 | diag::err_offsetof_incomplete_type)) | ||||||||
| 14819 | return ExprError(); | ||||||||
| 14820 | |||||||||
| 14821 | // Look for the designated field. | ||||||||
| 14822 | const RecordType *RC = CurrentType->getAs<RecordType>(); | ||||||||
| 14823 | if (!RC) | ||||||||
| 14824 | return ExprError(Diag(OC.LocEnd, diag::err_offsetof_record_type) | ||||||||
| 14825 | << CurrentType); | ||||||||
| 14826 | RecordDecl *RD = RC->getDecl(); | ||||||||
| 14827 | |||||||||
| 14828 | // C++ [lib.support.types]p5: | ||||||||
| 14829 | // The macro offsetof accepts a restricted set of type arguments in this | ||||||||
| 14830 | // International Standard. type shall be a POD structure or a POD union | ||||||||
| 14831 | // (clause 9). | ||||||||
| 14832 | // C++11 [support.types]p4: | ||||||||
| 14833 | // If type is not a standard-layout class (Clause 9), the results are | ||||||||
| 14834 | // undefined. | ||||||||
| 14835 | if (CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) { | ||||||||
| 14836 | bool IsSafe = LangOpts.CPlusPlus11? CRD->isStandardLayout() : CRD->isPOD(); | ||||||||
| 14837 | unsigned DiagID = | ||||||||
| 14838 | LangOpts.CPlusPlus11? diag::ext_offsetof_non_standardlayout_type | ||||||||
| 14839 | : diag::ext_offsetof_non_pod_type; | ||||||||
| 14840 | |||||||||
| 14841 | if (!IsSafe && !DidWarnAboutNonPOD && | ||||||||
| 14842 | DiagRuntimeBehavior(BuiltinLoc, nullptr, | ||||||||
| 14843 | PDiag(DiagID) | ||||||||
| 14844 | << SourceRange(Components[0].LocStart, OC.LocEnd) | ||||||||
| 14845 | << CurrentType)) | ||||||||
| 14846 | DidWarnAboutNonPOD = true; | ||||||||
| 14847 | } | ||||||||
| 14848 | |||||||||
| 14849 | // Look for the field. | ||||||||
| 14850 | LookupResult R(*this, OC.U.IdentInfo, OC.LocStart, LookupMemberName); | ||||||||
| 14851 | LookupQualifiedName(R, RD); | ||||||||
| 14852 | FieldDecl *MemberDecl = R.getAsSingle<FieldDecl>(); | ||||||||
| 14853 | IndirectFieldDecl *IndirectMemberDecl = nullptr; | ||||||||
| 14854 | if (!MemberDecl) { | ||||||||
| 14855 | if ((IndirectMemberDecl = R.getAsSingle<IndirectFieldDecl>())) | ||||||||
| 14856 | MemberDecl = IndirectMemberDecl->getAnonField(); | ||||||||
| 14857 | } | ||||||||
| 14858 | |||||||||
| 14859 | if (!MemberDecl) | ||||||||
| 14860 | return ExprError(Diag(BuiltinLoc, diag::err_no_member) | ||||||||
| 14861 | << OC.U.IdentInfo << RD << SourceRange(OC.LocStart, | ||||||||
| 14862 | OC.LocEnd)); | ||||||||
| 14863 | |||||||||
| 14864 | // C99 7.17p3: | ||||||||
| 14865 | // (If the specified member is a bit-field, the behavior is undefined.) | ||||||||
| 14866 | // | ||||||||
| 14867 | // We diagnose this as an error. | ||||||||
| 14868 | if (MemberDecl->isBitField()) { | ||||||||
| 14869 | Diag(OC.LocEnd, diag::err_offsetof_bitfield) | ||||||||
| 14870 | << MemberDecl->getDeclName() | ||||||||
| 14871 | << SourceRange(BuiltinLoc, RParenLoc); | ||||||||
| 14872 | Diag(MemberDecl->getLocation(), diag::note_bitfield_decl); | ||||||||
| 14873 | return ExprError(); | ||||||||
| 14874 | } | ||||||||
| 14875 | |||||||||
| 14876 | RecordDecl *Parent = MemberDecl->getParent(); | ||||||||
| 14877 | if (IndirectMemberDecl) | ||||||||
| 14878 | Parent = cast<RecordDecl>(IndirectMemberDecl->getDeclContext()); | ||||||||
| 14879 | |||||||||
| 14880 | // If the member was found in a base class, introduce OffsetOfNodes for | ||||||||
| 14881 | // the base class indirections. | ||||||||
| 14882 | CXXBasePaths Paths; | ||||||||
| 14883 | if (IsDerivedFrom(OC.LocStart, CurrentType, Context.getTypeDeclType(Parent), | ||||||||
| 14884 | Paths)) { | ||||||||
| 14885 | if (Paths.getDetectedVirtual()) { | ||||||||
| 14886 | Diag(OC.LocEnd, diag::err_offsetof_field_of_virtual_base) | ||||||||
| 14887 | << MemberDecl->getDeclName() | ||||||||
| 14888 | << SourceRange(BuiltinLoc, RParenLoc); | ||||||||
| 14889 | return ExprError(); | ||||||||
| 14890 | } | ||||||||
| 14891 | |||||||||
| 14892 | CXXBasePath &Path = Paths.front(); | ||||||||
| 14893 | for (const CXXBasePathElement &B : Path) | ||||||||
| 14894 | Comps.push_back(OffsetOfNode(B.Base)); | ||||||||
| 14895 | } | ||||||||
| 14896 | |||||||||
| 14897 | if (IndirectMemberDecl) { | ||||||||
| 14898 | for (auto *FI : IndirectMemberDecl->chain()) { | ||||||||
| 14899 | assert(isa<FieldDecl>(FI))((isa<FieldDecl>(FI)) ? static_cast<void> (0) : __assert_fail ("isa<FieldDecl>(FI)", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14899, __PRETTY_FUNCTION__)); | ||||||||
| 14900 | Comps.push_back(OffsetOfNode(OC.LocStart, | ||||||||
| 14901 | cast<FieldDecl>(FI), OC.LocEnd)); | ||||||||
| 14902 | } | ||||||||
| 14903 | } else | ||||||||
| 14904 | Comps.push_back(OffsetOfNode(OC.LocStart, MemberDecl, OC.LocEnd)); | ||||||||
| 14905 | |||||||||
| 14906 | CurrentType = MemberDecl->getType().getNonReferenceType(); | ||||||||
| 14907 | } | ||||||||
| 14908 | |||||||||
| 14909 | return OffsetOfExpr::Create(Context, Context.getSizeType(), BuiltinLoc, TInfo, | ||||||||
| 14910 | Comps, Exprs, RParenLoc); | ||||||||
| 14911 | } | ||||||||
| 14912 | |||||||||
| 14913 | ExprResult Sema::ActOnBuiltinOffsetOf(Scope *S, | ||||||||
| 14914 | SourceLocation BuiltinLoc, | ||||||||
| 14915 | SourceLocation TypeLoc, | ||||||||
| 14916 | ParsedType ParsedArgTy, | ||||||||
| 14917 | ArrayRef<OffsetOfComponent> Components, | ||||||||
| 14918 | SourceLocation RParenLoc) { | ||||||||
| 14919 | |||||||||
| 14920 | TypeSourceInfo *ArgTInfo; | ||||||||
| 14921 | QualType ArgTy = GetTypeFromParser(ParsedArgTy, &ArgTInfo); | ||||||||
| 14922 | if (ArgTy.isNull()) | ||||||||
| 14923 | return ExprError(); | ||||||||
| 14924 | |||||||||
| 14925 | if (!ArgTInfo) | ||||||||
| 14926 | ArgTInfo = Context.getTrivialTypeSourceInfo(ArgTy, TypeLoc); | ||||||||
| 14927 | |||||||||
| 14928 | return BuildBuiltinOffsetOf(BuiltinLoc, ArgTInfo, Components, RParenLoc); | ||||||||
| 14929 | } | ||||||||
| 14930 | |||||||||
| 14931 | |||||||||
| 14932 | ExprResult Sema::ActOnChooseExpr(SourceLocation BuiltinLoc, | ||||||||
| 14933 | Expr *CondExpr, | ||||||||
| 14934 | Expr *LHSExpr, Expr *RHSExpr, | ||||||||
| 14935 | SourceLocation RPLoc) { | ||||||||
| 14936 | assert((CondExpr && LHSExpr && RHSExpr) && "Missing type argument(s)")(((CondExpr && LHSExpr && RHSExpr) && "Missing type argument(s)") ? static_cast<void> (0) : __assert_fail ("(CondExpr && LHSExpr && RHSExpr) && \"Missing type argument(s)\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 14936, __PRETTY_FUNCTION__)); | ||||||||
| 14937 | |||||||||
| 14938 | ExprValueKind VK = VK_RValue; | ||||||||
| 14939 | ExprObjectKind OK = OK_Ordinary; | ||||||||
| 14940 | QualType resType; | ||||||||
| 14941 | bool CondIsTrue = false; | ||||||||
| 14942 | if (CondExpr->isTypeDependent() || CondExpr->isValueDependent()) { | ||||||||
| 14943 | resType = Context.DependentTy; | ||||||||
| 14944 | } else { | ||||||||
| 14945 | // The conditional expression is required to be a constant expression. | ||||||||
| 14946 | llvm::APSInt condEval(32); | ||||||||
| 14947 | ExprResult CondICE | ||||||||
| 14948 | = VerifyIntegerConstantExpression(CondExpr, &condEval, | ||||||||
| 14949 | diag::err_typecheck_choose_expr_requires_constant, false); | ||||||||
| 14950 | if (CondICE.isInvalid()) | ||||||||
| 14951 | return ExprError(); | ||||||||
| 14952 | CondExpr = CondICE.get(); | ||||||||
| 14953 | CondIsTrue = condEval.getZExtValue(); | ||||||||
| 14954 | |||||||||
| 14955 | // If the condition is > zero, then the AST type is the same as the LHSExpr. | ||||||||
| 14956 | Expr *ActiveExpr = CondIsTrue ? LHSExpr : RHSExpr; | ||||||||
| 14957 | |||||||||
| 14958 | resType = ActiveExpr->getType(); | ||||||||
| 14959 | VK = ActiveExpr->getValueKind(); | ||||||||
| 14960 | OK = ActiveExpr->getObjectKind(); | ||||||||
| 14961 | } | ||||||||
| 14962 | |||||||||
| 14963 | return new (Context) ChooseExpr(BuiltinLoc, CondExpr, LHSExpr, RHSExpr, | ||||||||
| 14964 | resType, VK, OK, RPLoc, CondIsTrue); | ||||||||
| 14965 | } | ||||||||
| 14966 | |||||||||
| 14967 | //===----------------------------------------------------------------------===// | ||||||||
| 14968 | // Clang Extensions. | ||||||||
| 14969 | //===----------------------------------------------------------------------===// | ||||||||
| 14970 | |||||||||
| 14971 | /// ActOnBlockStart - This callback is invoked when a block literal is started. | ||||||||
| 14972 | void Sema::ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope) { | ||||||||
| 14973 | BlockDecl *Block = BlockDecl::Create(Context, CurContext, CaretLoc); | ||||||||
| 14974 | |||||||||
| 14975 | if (LangOpts.CPlusPlus) { | ||||||||
| 14976 | MangleNumberingContext *MCtx; | ||||||||
| 14977 | Decl *ManglingContextDecl; | ||||||||
| 14978 | std::tie(MCtx, ManglingContextDecl) = | ||||||||
| 14979 | getCurrentMangleNumberContext(Block->getDeclContext()); | ||||||||
| 14980 | if (MCtx) { | ||||||||
| 14981 | unsigned ManglingNumber = MCtx->getManglingNumber(Block); | ||||||||
| 14982 | Block->setBlockMangling(ManglingNumber, ManglingContextDecl); | ||||||||
| 14983 | } | ||||||||
| 14984 | } | ||||||||
| 14985 | |||||||||
| 14986 | PushBlockScope(CurScope, Block); | ||||||||
| 14987 | CurContext->addDecl(Block); | ||||||||
| 14988 | if (CurScope) | ||||||||
| 14989 | PushDeclContext(CurScope, Block); | ||||||||
| 14990 | else | ||||||||
| 14991 | CurContext = Block; | ||||||||
| 14992 | |||||||||
| 14993 | getCurBlock()->HasImplicitReturnType = true; | ||||||||
| 14994 | |||||||||
| 14995 | // Enter a new evaluation context to insulate the block from any | ||||||||
| 14996 | // cleanups from the enclosing full-expression. | ||||||||
| 14997 | PushExpressionEvaluationContext( | ||||||||
| 14998 | ExpressionEvaluationContext::PotentiallyEvaluated); | ||||||||
| 14999 | } | ||||||||
| 15000 | |||||||||
| 15001 | void Sema::ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo, | ||||||||
| 15002 | Scope *CurScope) { | ||||||||
| 15003 | assert(ParamInfo.getIdentifier() == nullptr &&((ParamInfo.getIdentifier() == nullptr && "block-id should have no identifier!" ) ? static_cast<void> (0) : __assert_fail ("ParamInfo.getIdentifier() == nullptr && \"block-id should have no identifier!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15004, __PRETTY_FUNCTION__)) | ||||||||
| 15004 | "block-id should have no identifier!")((ParamInfo.getIdentifier() == nullptr && "block-id should have no identifier!" ) ? static_cast<void> (0) : __assert_fail ("ParamInfo.getIdentifier() == nullptr && \"block-id should have no identifier!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15004, __PRETTY_FUNCTION__)); | ||||||||
| 15005 | assert(ParamInfo.getContext() == DeclaratorContext::BlockLiteralContext)((ParamInfo.getContext() == DeclaratorContext::BlockLiteralContext ) ? static_cast<void> (0) : __assert_fail ("ParamInfo.getContext() == DeclaratorContext::BlockLiteralContext" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15005, __PRETTY_FUNCTION__)); | ||||||||
| 15006 | BlockScopeInfo *CurBlock = getCurBlock(); | ||||||||
| 15007 | |||||||||
| 15008 | TypeSourceInfo *Sig = GetTypeForDeclarator(ParamInfo, CurScope); | ||||||||
| 15009 | QualType T = Sig->getType(); | ||||||||
| 15010 | |||||||||
| 15011 | // FIXME: We should allow unexpanded parameter packs here, but that would, | ||||||||
| 15012 | // in turn, make the block expression contain unexpanded parameter packs. | ||||||||
| 15013 | if (DiagnoseUnexpandedParameterPack(CaretLoc, Sig, UPPC_Block)) { | ||||||||
| 15014 | // Drop the parameters. | ||||||||
| 15015 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
| 15016 | EPI.HasTrailingReturn = false; | ||||||||
| 15017 | EPI.TypeQuals.addConst(); | ||||||||
| 15018 | T = Context.getFunctionType(Context.DependentTy, None, EPI); | ||||||||
| 15019 | Sig = Context.getTrivialTypeSourceInfo(T); | ||||||||
| 15020 | } | ||||||||
| 15021 | |||||||||
| 15022 | // GetTypeForDeclarator always produces a function type for a block | ||||||||
| 15023 | // literal signature. Furthermore, it is always a FunctionProtoType | ||||||||
| 15024 | // unless the function was written with a typedef. | ||||||||
| 15025 | assert(T->isFunctionType() &&((T->isFunctionType() && "GetTypeForDeclarator made a non-function block signature" ) ? static_cast<void> (0) : __assert_fail ("T->isFunctionType() && \"GetTypeForDeclarator made a non-function block signature\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15026, __PRETTY_FUNCTION__)) | ||||||||
| 15026 | "GetTypeForDeclarator made a non-function block signature")((T->isFunctionType() && "GetTypeForDeclarator made a non-function block signature" ) ? static_cast<void> (0) : __assert_fail ("T->isFunctionType() && \"GetTypeForDeclarator made a non-function block signature\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15026, __PRETTY_FUNCTION__)); | ||||||||
| 15027 | |||||||||
| 15028 | // Look for an explicit signature in that function type. | ||||||||
| 15029 | FunctionProtoTypeLoc ExplicitSignature; | ||||||||
| 15030 | |||||||||
| 15031 | if ((ExplicitSignature = Sig->getTypeLoc() | ||||||||
| 15032 | .getAsAdjusted<FunctionProtoTypeLoc>())) { | ||||||||
| 15033 | |||||||||
| 15034 | // Check whether that explicit signature was synthesized by | ||||||||
| 15035 | // GetTypeForDeclarator. If so, don't save that as part of the | ||||||||
| 15036 | // written signature. | ||||||||
| 15037 | if (ExplicitSignature.getLocalRangeBegin() == | ||||||||
| 15038 | ExplicitSignature.getLocalRangeEnd()) { | ||||||||
| 15039 | // This would be much cheaper if we stored TypeLocs instead of | ||||||||
| 15040 | // TypeSourceInfos. | ||||||||
| 15041 | TypeLoc Result = ExplicitSignature.getReturnLoc(); | ||||||||
| 15042 | unsigned Size = Result.getFullDataSize(); | ||||||||
| 15043 | Sig = Context.CreateTypeSourceInfo(Result.getType(), Size); | ||||||||
| 15044 | Sig->getTypeLoc().initializeFullCopy(Result, Size); | ||||||||
| 15045 | |||||||||
| 15046 | ExplicitSignature = FunctionProtoTypeLoc(); | ||||||||
| 15047 | } | ||||||||
| 15048 | } | ||||||||
| 15049 | |||||||||
| 15050 | CurBlock->TheDecl->setSignatureAsWritten(Sig); | ||||||||
| 15051 | CurBlock->FunctionType = T; | ||||||||
| 15052 | |||||||||
| 15053 | const FunctionType *Fn = T->getAs<FunctionType>(); | ||||||||
| 15054 | QualType RetTy = Fn->getReturnType(); | ||||||||
| 15055 | bool isVariadic = | ||||||||
| 15056 | (isa<FunctionProtoType>(Fn) && cast<FunctionProtoType>(Fn)->isVariadic()); | ||||||||
| 15057 | |||||||||
| 15058 | CurBlock->TheDecl->setIsVariadic(isVariadic); | ||||||||
| 15059 | |||||||||
| 15060 | // Context.DependentTy is used as a placeholder for a missing block | ||||||||
| 15061 | // return type. TODO: what should we do with declarators like: | ||||||||
| 15062 | // ^ * { ... } | ||||||||
| 15063 | // If the answer is "apply template argument deduction".... | ||||||||
| 15064 | if (RetTy != Context.DependentTy) { | ||||||||
| 15065 | CurBlock->ReturnType = RetTy; | ||||||||
| 15066 | CurBlock->TheDecl->setBlockMissingReturnType(false); | ||||||||
| 15067 | CurBlock->HasImplicitReturnType = false; | ||||||||
| 15068 | } | ||||||||
| 15069 | |||||||||
| 15070 | // Push block parameters from the declarator if we had them. | ||||||||
| 15071 | SmallVector<ParmVarDecl*, 8> Params; | ||||||||
| 15072 | if (ExplicitSignature) { | ||||||||
| 15073 | for (unsigned I = 0, E = ExplicitSignature.getNumParams(); I != E; ++I) { | ||||||||
| 15074 | ParmVarDecl *Param = ExplicitSignature.getParam(I); | ||||||||
| 15075 | if (Param->getIdentifier() == nullptr && !Param->isImplicit() && | ||||||||
| 15076 | !Param->isInvalidDecl() && !getLangOpts().CPlusPlus) { | ||||||||
| 15077 | // Diagnose this as an extension in C17 and earlier. | ||||||||
| 15078 | if (!getLangOpts().C2x) | ||||||||
| 15079 | Diag(Param->getLocation(), diag::ext_parameter_name_omitted_c2x); | ||||||||
| 15080 | } | ||||||||
| 15081 | Params.push_back(Param); | ||||||||
| 15082 | } | ||||||||
| 15083 | |||||||||
| 15084 | // Fake up parameter variables if we have a typedef, like | ||||||||
| 15085 | // ^ fntype { ... } | ||||||||
| 15086 | } else if (const FunctionProtoType *Fn = T->getAs<FunctionProtoType>()) { | ||||||||
| 15087 | for (const auto &I : Fn->param_types()) { | ||||||||
| 15088 | ParmVarDecl *Param = BuildParmVarDeclForTypedef( | ||||||||
| 15089 | CurBlock->TheDecl, ParamInfo.getBeginLoc(), I); | ||||||||
| 15090 | Params.push_back(Param); | ||||||||
| 15091 | } | ||||||||
| 15092 | } | ||||||||
| 15093 | |||||||||
| 15094 | // Set the parameters on the block decl. | ||||||||
| 15095 | if (!Params.empty()) { | ||||||||
| 15096 | CurBlock->TheDecl->setParams(Params); | ||||||||
| 15097 | CheckParmsForFunctionDef(CurBlock->TheDecl->parameters(), | ||||||||
| 15098 | /*CheckParameterNames=*/false); | ||||||||
| 15099 | } | ||||||||
| 15100 | |||||||||
| 15101 | // Finally we can process decl attributes. | ||||||||
| 15102 | ProcessDeclAttributes(CurScope, CurBlock->TheDecl, ParamInfo); | ||||||||
| 15103 | |||||||||
| 15104 | // Put the parameter variables in scope. | ||||||||
| 15105 | for (auto AI : CurBlock->TheDecl->parameters()) { | ||||||||
| 15106 | AI->setOwningFunction(CurBlock->TheDecl); | ||||||||
| 15107 | |||||||||
| 15108 | // If this has an identifier, add it to the scope stack. | ||||||||
| 15109 | if (AI->getIdentifier()) { | ||||||||
| 15110 | CheckShadow(CurBlock->TheScope, AI); | ||||||||
| 15111 | |||||||||
| 15112 | PushOnScopeChains(AI, CurBlock->TheScope); | ||||||||
| 15113 | } | ||||||||
| 15114 | } | ||||||||
| 15115 | } | ||||||||
| 15116 | |||||||||
| 15117 | /// ActOnBlockError - If there is an error parsing a block, this callback | ||||||||
| 15118 | /// is invoked to pop the information about the block from the action impl. | ||||||||
| 15119 | void Sema::ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope) { | ||||||||
| 15120 | // Leave the expression-evaluation context. | ||||||||
| 15121 | DiscardCleanupsInEvaluationContext(); | ||||||||
| 15122 | PopExpressionEvaluationContext(); | ||||||||
| 15123 | |||||||||
| 15124 | // Pop off CurBlock, handle nested blocks. | ||||||||
| 15125 | PopDeclContext(); | ||||||||
| 15126 | PopFunctionScopeInfo(); | ||||||||
| 15127 | } | ||||||||
| 15128 | |||||||||
| 15129 | /// ActOnBlockStmtExpr - This is called when the body of a block statement | ||||||||
| 15130 | /// literal was successfully completed. ^(int x){...} | ||||||||
| 15131 | ExprResult Sema::ActOnBlockStmtExpr(SourceLocation CaretLoc, | ||||||||
| 15132 | Stmt *Body, Scope *CurScope) { | ||||||||
| 15133 | // If blocks are disabled, emit an error. | ||||||||
| 15134 | if (!LangOpts.Blocks) | ||||||||
| 15135 | Diag(CaretLoc, diag::err_blocks_disable) << LangOpts.OpenCL; | ||||||||
| 15136 | |||||||||
| 15137 | // Leave the expression-evaluation context. | ||||||||
| 15138 | if (hasAnyUnrecoverableErrorsInThisFunction()) | ||||||||
| 15139 | DiscardCleanupsInEvaluationContext(); | ||||||||
| 15140 | assert(!Cleanup.exprNeedsCleanups() &&((!Cleanup.exprNeedsCleanups() && "cleanups within block not correctly bound!" ) ? static_cast<void> (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within block not correctly bound!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15141, __PRETTY_FUNCTION__)) | ||||||||
| 15141 | "cleanups within block not correctly bound!")((!Cleanup.exprNeedsCleanups() && "cleanups within block not correctly bound!" ) ? static_cast<void> (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within block not correctly bound!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15141, __PRETTY_FUNCTION__)); | ||||||||
| 15142 | PopExpressionEvaluationContext(); | ||||||||
| 15143 | |||||||||
| 15144 | BlockScopeInfo *BSI = cast<BlockScopeInfo>(FunctionScopes.back()); | ||||||||
| 15145 | BlockDecl *BD = BSI->TheDecl; | ||||||||
| 15146 | |||||||||
| 15147 | if (BSI->HasImplicitReturnType) | ||||||||
| 15148 | deduceClosureReturnType(*BSI); | ||||||||
| 15149 | |||||||||
| 15150 | QualType RetTy = Context.VoidTy; | ||||||||
| 15151 | if (!BSI->ReturnType.isNull()) | ||||||||
| 15152 | RetTy = BSI->ReturnType; | ||||||||
| 15153 | |||||||||
| 15154 | bool NoReturn = BD->hasAttr<NoReturnAttr>(); | ||||||||
| 15155 | QualType BlockTy; | ||||||||
| 15156 | |||||||||
| 15157 | // If the user wrote a function type in some form, try to use that. | ||||||||
| 15158 | if (!BSI->FunctionType.isNull()) { | ||||||||
| 15159 | const FunctionType *FTy = BSI->FunctionType->castAs<FunctionType>(); | ||||||||
| 15160 | |||||||||
| 15161 | FunctionType::ExtInfo Ext = FTy->getExtInfo(); | ||||||||
| 15162 | if (NoReturn && !Ext.getNoReturn()) Ext = Ext.withNoReturn(true); | ||||||||
| 15163 | |||||||||
| 15164 | // Turn protoless block types into nullary block types. | ||||||||
| 15165 | if (isa<FunctionNoProtoType>(FTy)) { | ||||||||
| 15166 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
| 15167 | EPI.ExtInfo = Ext; | ||||||||
| 15168 | BlockTy = Context.getFunctionType(RetTy, None, EPI); | ||||||||
| 15169 | |||||||||
| 15170 | // Otherwise, if we don't need to change anything about the function type, | ||||||||
| 15171 | // preserve its sugar structure. | ||||||||
| 15172 | } else if (FTy->getReturnType() == RetTy && | ||||||||
| 15173 | (!NoReturn || FTy->getNoReturnAttr())) { | ||||||||
| 15174 | BlockTy = BSI->FunctionType; | ||||||||
| 15175 | |||||||||
| 15176 | // Otherwise, make the minimal modifications to the function type. | ||||||||
| 15177 | } else { | ||||||||
| 15178 | const FunctionProtoType *FPT = cast<FunctionProtoType>(FTy); | ||||||||
| 15179 | FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo(); | ||||||||
| 15180 | EPI.TypeQuals = Qualifiers(); | ||||||||
| 15181 | EPI.ExtInfo = Ext; | ||||||||
| 15182 | BlockTy = Context.getFunctionType(RetTy, FPT->getParamTypes(), EPI); | ||||||||
| 15183 | } | ||||||||
| 15184 | |||||||||
| 15185 | // If we don't have a function type, just build one from nothing. | ||||||||
| 15186 | } else { | ||||||||
| 15187 | FunctionProtoType::ExtProtoInfo EPI; | ||||||||
| 15188 | EPI.ExtInfo = FunctionType::ExtInfo().withNoReturn(NoReturn); | ||||||||
| 15189 | BlockTy = Context.getFunctionType(RetTy, None, EPI); | ||||||||
| 15190 | } | ||||||||
| 15191 | |||||||||
| 15192 | DiagnoseUnusedParameters(BD->parameters()); | ||||||||
| 15193 | BlockTy = Context.getBlockPointerType(BlockTy); | ||||||||
| 15194 | |||||||||
| 15195 | // If needed, diagnose invalid gotos and switches in the block. | ||||||||
| 15196 | if (getCurFunction()->NeedsScopeChecking() && | ||||||||
| 15197 | !PP.isCodeCompletionEnabled()) | ||||||||
| 15198 | DiagnoseInvalidJumps(cast<CompoundStmt>(Body)); | ||||||||
| 15199 | |||||||||
| 15200 | BD->setBody(cast<CompoundStmt>(Body)); | ||||||||
| 15201 | |||||||||
| 15202 | if (Body && getCurFunction()->HasPotentialAvailabilityViolations) | ||||||||
| 15203 | DiagnoseUnguardedAvailabilityViolations(BD); | ||||||||
| 15204 | |||||||||
| 15205 | // Try to apply the named return value optimization. We have to check again | ||||||||
| 15206 | // if we can do this, though, because blocks keep return statements around | ||||||||
| 15207 | // to deduce an implicit return type. | ||||||||
| 15208 | if (getLangOpts().CPlusPlus && RetTy->isRecordType() && | ||||||||
| 15209 | !BD->isDependentContext()) | ||||||||
| 15210 | computeNRVO(Body, BSI); | ||||||||
| 15211 | |||||||||
| 15212 | if (RetTy.hasNonTrivialToPrimitiveDestructCUnion() || | ||||||||
| 15213 | RetTy.hasNonTrivialToPrimitiveCopyCUnion()) | ||||||||
| 15214 | checkNonTrivialCUnion(RetTy, BD->getCaretLocation(), NTCUC_FunctionReturn, | ||||||||
| 15215 | NTCUK_Destruct|NTCUK_Copy); | ||||||||
| 15216 | |||||||||
| 15217 | PopDeclContext(); | ||||||||
| 15218 | |||||||||
| 15219 | // Pop the block scope now but keep it alive to the end of this function. | ||||||||
| 15220 | AnalysisBasedWarnings::Policy WP = AnalysisWarnings.getDefaultPolicy(); | ||||||||
| 15221 | PoppedFunctionScopePtr ScopeRAII = PopFunctionScopeInfo(&WP, BD, BlockTy); | ||||||||
| 15222 | |||||||||
| 15223 | // Set the captured variables on the block. | ||||||||
| 15224 | SmallVector<BlockDecl::Capture, 4> Captures; | ||||||||
| 15225 | for (Capture &Cap : BSI->Captures) { | ||||||||
| 15226 | if (Cap.isInvalid() || Cap.isThisCapture()) | ||||||||
| 15227 | continue; | ||||||||
| 15228 | |||||||||
| 15229 | VarDecl *Var = Cap.getVariable(); | ||||||||
| 15230 | Expr *CopyExpr = nullptr; | ||||||||
| 15231 | if (getLangOpts().CPlusPlus && Cap.isCopyCapture()) { | ||||||||
| 15232 | if (const RecordType *Record = | ||||||||
| 15233 | Cap.getCaptureType()->getAs<RecordType>()) { | ||||||||
| 15234 | // The capture logic needs the destructor, so make sure we mark it. | ||||||||
| 15235 | // Usually this is unnecessary because most local variables have | ||||||||
| 15236 | // their destructors marked at declaration time, but parameters are | ||||||||
| 15237 | // an exception because it's technically only the call site that | ||||||||
| 15238 | // actually requires the destructor. | ||||||||
| 15239 | if (isa<ParmVarDecl>(Var)) | ||||||||
| 15240 | FinalizeVarWithDestructor(Var, Record); | ||||||||
| 15241 | |||||||||
| 15242 | // Enter a separate potentially-evaluated context while building block | ||||||||
| 15243 | // initializers to isolate their cleanups from those of the block | ||||||||
| 15244 | // itself. | ||||||||
| 15245 | // FIXME: Is this appropriate even when the block itself occurs in an | ||||||||
| 15246 | // unevaluated operand? | ||||||||
| 15247 | EnterExpressionEvaluationContext EvalContext( | ||||||||
| 15248 | *this, ExpressionEvaluationContext::PotentiallyEvaluated); | ||||||||
| 15249 | |||||||||
| 15250 | SourceLocation Loc = Cap.getLocation(); | ||||||||
| 15251 | |||||||||
| 15252 | ExprResult Result = BuildDeclarationNameExpr( | ||||||||
| 15253 | CXXScopeSpec(), DeclarationNameInfo(Var->getDeclName(), Loc), Var); | ||||||||
| 15254 | |||||||||
| 15255 | // According to the blocks spec, the capture of a variable from | ||||||||
| 15256 | // the stack requires a const copy constructor. This is not true | ||||||||
| 15257 | // of the copy/move done to move a __block variable to the heap. | ||||||||
| 15258 | if (!Result.isInvalid() && | ||||||||
| 15259 | !Result.get()->getType().isConstQualified()) { | ||||||||
| 15260 | Result = ImpCastExprToType(Result.get(), | ||||||||
| 15261 | Result.get()->getType().withConst(), | ||||||||
| 15262 | CK_NoOp, VK_LValue); | ||||||||
| 15263 | } | ||||||||
| 15264 | |||||||||
| 15265 | if (!Result.isInvalid()) { | ||||||||
| 15266 | Result = PerformCopyInitialization( | ||||||||
| 15267 | InitializedEntity::InitializeBlock(Var->getLocation(), | ||||||||
| 15268 | Cap.getCaptureType(), false), | ||||||||
| 15269 | Loc, Result.get()); | ||||||||
| 15270 | } | ||||||||
| 15271 | |||||||||
| 15272 | // Build a full-expression copy expression if initialization | ||||||||
| 15273 | // succeeded and used a non-trivial constructor. Recover from | ||||||||
| 15274 | // errors by pretending that the copy isn't necessary. | ||||||||
| 15275 | if (!Result.isInvalid() && | ||||||||
| 15276 | !cast<CXXConstructExpr>(Result.get())->getConstructor() | ||||||||
| 15277 | ->isTrivial()) { | ||||||||
| 15278 | Result = MaybeCreateExprWithCleanups(Result); | ||||||||
| 15279 | CopyExpr = Result.get(); | ||||||||
| 15280 | } | ||||||||
| 15281 | } | ||||||||
| 15282 | } | ||||||||
| 15283 | |||||||||
| 15284 | BlockDecl::Capture NewCap(Var, Cap.isBlockCapture(), Cap.isNested(), | ||||||||
| 15285 | CopyExpr); | ||||||||
| 15286 | Captures.push_back(NewCap); | ||||||||
| 15287 | } | ||||||||
| 15288 | BD->setCaptures(Context, Captures, BSI->CXXThisCaptureIndex != 0); | ||||||||
| 15289 | |||||||||
| 15290 | BlockExpr *Result = new (Context) BlockExpr(BD, BlockTy); | ||||||||
| 15291 | |||||||||
| 15292 | // If the block isn't obviously global, i.e. it captures anything at | ||||||||
| 15293 | // all, then we need to do a few things in the surrounding context: | ||||||||
| 15294 | if (Result->getBlockDecl()->hasCaptures()) { | ||||||||
| 15295 | // First, this expression has a new cleanup object. | ||||||||
| 15296 | ExprCleanupObjects.push_back(Result->getBlockDecl()); | ||||||||
| 15297 | Cleanup.setExprNeedsCleanups(true); | ||||||||
| 15298 | |||||||||
| 15299 | // It also gets a branch-protected scope if any of the captured | ||||||||
| 15300 | // variables needs destruction. | ||||||||
| 15301 | for (const auto &CI : Result->getBlockDecl()->captures()) { | ||||||||
| 15302 | const VarDecl *var = CI.getVariable(); | ||||||||
| 15303 | if (var->getType().isDestructedType() != QualType::DK_none) { | ||||||||
| 15304 | setFunctionHasBranchProtectedScope(); | ||||||||
| 15305 | break; | ||||||||
| 15306 | } | ||||||||
| 15307 | } | ||||||||
| 15308 | } | ||||||||
| 15309 | |||||||||
| 15310 | if (getCurFunction()) | ||||||||
| 15311 | getCurFunction()->addBlock(BD); | ||||||||
| 15312 | |||||||||
| 15313 | return Result; | ||||||||
| 15314 | } | ||||||||
| 15315 | |||||||||
| 15316 | ExprResult Sema::ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, | ||||||||
| 15317 | SourceLocation RPLoc) { | ||||||||
| 15318 | TypeSourceInfo *TInfo; | ||||||||
| 15319 | GetTypeFromParser(Ty, &TInfo); | ||||||||
| 15320 | return BuildVAArgExpr(BuiltinLoc, E, TInfo, RPLoc); | ||||||||
| 15321 | } | ||||||||
| 15322 | |||||||||
| 15323 | ExprResult Sema::BuildVAArgExpr(SourceLocation BuiltinLoc, | ||||||||
| 15324 | Expr *E, TypeSourceInfo *TInfo, | ||||||||
| 15325 | SourceLocation RPLoc) { | ||||||||
| 15326 | Expr *OrigExpr = E; | ||||||||
| 15327 | bool IsMS = false; | ||||||||
| 15328 | |||||||||
| 15329 | // CUDA device code does not support varargs. | ||||||||
| 15330 | if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice) { | ||||||||
| 15331 | if (const FunctionDecl *F = dyn_cast<FunctionDecl>(CurContext)) { | ||||||||
| 15332 | CUDAFunctionTarget T = IdentifyCUDATarget(F); | ||||||||
| 15333 | if (T == CFT_Global || T == CFT_Device || T == CFT_HostDevice) | ||||||||
| 15334 | return ExprError(Diag(E->getBeginLoc(), diag::err_va_arg_in_device)); | ||||||||
| 15335 | } | ||||||||
| 15336 | } | ||||||||
| 15337 | |||||||||
| 15338 | // NVPTX does not support va_arg expression. | ||||||||
| 15339 | if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && | ||||||||
| 15340 | Context.getTargetInfo().getTriple().isNVPTX()) | ||||||||
| 15341 | targetDiag(E->getBeginLoc(), diag::err_va_arg_in_device); | ||||||||
| 15342 | |||||||||
| 15343 | // It might be a __builtin_ms_va_list. (But don't ever mark a va_arg() | ||||||||
| 15344 | // as Microsoft ABI on an actual Microsoft platform, where | ||||||||
| 15345 | // __builtin_ms_va_list and __builtin_va_list are the same.) | ||||||||
| 15346 | if (!E->isTypeDependent() && Context.getTargetInfo().hasBuiltinMSVaList() && | ||||||||
| 15347 | Context.getTargetInfo().getBuiltinVaListKind() != TargetInfo::CharPtrBuiltinVaList) { | ||||||||
| 15348 | QualType MSVaListType = Context.getBuiltinMSVaListType(); | ||||||||
| 15349 | if (Context.hasSameType(MSVaListType, E->getType())) { | ||||||||
| 15350 | if (CheckForModifiableLvalue(E, BuiltinLoc, *this)) | ||||||||
| 15351 | return ExprError(); | ||||||||
| 15352 | IsMS = true; | ||||||||
| 15353 | } | ||||||||
| 15354 | } | ||||||||
| 15355 | |||||||||
| 15356 | // Get the va_list type | ||||||||
| 15357 | QualType VaListType = Context.getBuiltinVaListType(); | ||||||||
| 15358 | if (!IsMS) { | ||||||||
| 15359 | if (VaListType->isArrayType()) { | ||||||||
| 15360 | // Deal with implicit array decay; for example, on x86-64, | ||||||||
| 15361 | // va_list is an array, but it's supposed to decay to | ||||||||
| 15362 | // a pointer for va_arg. | ||||||||
| 15363 | VaListType = Context.getArrayDecayedType(VaListType); | ||||||||
| 15364 | // Make sure the input expression also decays appropriately. | ||||||||
| 15365 | ExprResult Result = UsualUnaryConversions(E); | ||||||||
| 15366 | if (Result.isInvalid()) | ||||||||
| 15367 | return ExprError(); | ||||||||
| 15368 | E = Result.get(); | ||||||||
| 15369 | } else if (VaListType->isRecordType() && getLangOpts().CPlusPlus) { | ||||||||
| 15370 | // If va_list is a record type and we are compiling in C++ mode, | ||||||||
| 15371 | // check the argument using reference binding. | ||||||||
| 15372 | InitializedEntity Entity = InitializedEntity::InitializeParameter( | ||||||||
| 15373 | Context, Context.getLValueReferenceType(VaListType), false); | ||||||||
| 15374 | ExprResult Init = PerformCopyInitialization(Entity, SourceLocation(), E); | ||||||||
| 15375 | if (Init.isInvalid()) | ||||||||
| 15376 | return ExprError(); | ||||||||
| 15377 | E = Init.getAs<Expr>(); | ||||||||
| 15378 | } else { | ||||||||
| 15379 | // Otherwise, the va_list argument must be an l-value because | ||||||||
| 15380 | // it is modified by va_arg. | ||||||||
| 15381 | if (!E->isTypeDependent() && | ||||||||
| 15382 | CheckForModifiableLvalue(E, BuiltinLoc, *this)) | ||||||||
| 15383 | return ExprError(); | ||||||||
| 15384 | } | ||||||||
| 15385 | } | ||||||||
| 15386 | |||||||||
| 15387 | if (!IsMS && !E->isTypeDependent() && | ||||||||
| 15388 | !Context.hasSameType(VaListType, E->getType())) | ||||||||
| 15389 | return ExprError( | ||||||||
| 15390 | Diag(E->getBeginLoc(), | ||||||||
| 15391 | diag::err_first_argument_to_va_arg_not_of_type_va_list) | ||||||||
| 15392 | << OrigExpr->getType() << E->getSourceRange()); | ||||||||
| 15393 | |||||||||
| 15394 | if (!TInfo->getType()->isDependentType()) { | ||||||||
| 15395 | if (RequireCompleteType(TInfo->getTypeLoc().getBeginLoc(), TInfo->getType(), | ||||||||
| 15396 | diag::err_second_parameter_to_va_arg_incomplete, | ||||||||
| 15397 | TInfo->getTypeLoc())) | ||||||||
| 15398 | return ExprError(); | ||||||||
| 15399 | |||||||||
| 15400 | if (RequireNonAbstractType(TInfo->getTypeLoc().getBeginLoc(), | ||||||||
| 15401 | TInfo->getType(), | ||||||||
| 15402 | diag::err_second_parameter_to_va_arg_abstract, | ||||||||
| 15403 | TInfo->getTypeLoc())) | ||||||||
| 15404 | return ExprError(); | ||||||||
| 15405 | |||||||||
| 15406 | if (!TInfo->getType().isPODType(Context)) { | ||||||||
| 15407 | Diag(TInfo->getTypeLoc().getBeginLoc(), | ||||||||
| 15408 | TInfo->getType()->isObjCLifetimeType() | ||||||||
| 15409 | ? diag::warn_second_parameter_to_va_arg_ownership_qualified | ||||||||
| 15410 | : diag::warn_second_parameter_to_va_arg_not_pod) | ||||||||
| 15411 | << TInfo->getType() | ||||||||
| 15412 | << TInfo->getTypeLoc().getSourceRange(); | ||||||||
| 15413 | } | ||||||||
| 15414 | |||||||||
| 15415 | // Check for va_arg where arguments of the given type will be promoted | ||||||||
| 15416 | // (i.e. this va_arg is guaranteed to have undefined behavior). | ||||||||
| 15417 | QualType PromoteType; | ||||||||
| 15418 | if (TInfo->getType()->isPromotableIntegerType()) { | ||||||||
| 15419 | PromoteType = Context.getPromotedIntegerType(TInfo->getType()); | ||||||||
| 15420 | if (Context.typesAreCompatible(PromoteType, TInfo->getType())) | ||||||||
| 15421 | PromoteType = QualType(); | ||||||||
| 15422 | } | ||||||||
| 15423 | if (TInfo->getType()->isSpecificBuiltinType(BuiltinType::Float)) | ||||||||
| 15424 | PromoteType = Context.DoubleTy; | ||||||||
| 15425 | if (!PromoteType.isNull()) | ||||||||
| 15426 | DiagRuntimeBehavior(TInfo->getTypeLoc().getBeginLoc(), E, | ||||||||
| 15427 | PDiag(diag::warn_second_parameter_to_va_arg_never_compatible) | ||||||||
| 15428 | << TInfo->getType() | ||||||||
| 15429 | << PromoteType | ||||||||
| 15430 | << TInfo->getTypeLoc().getSourceRange()); | ||||||||
| 15431 | } | ||||||||
| 15432 | |||||||||
| 15433 | QualType T = TInfo->getType().getNonLValueExprType(Context); | ||||||||
| 15434 | return new (Context) VAArgExpr(BuiltinLoc, E, TInfo, RPLoc, T, IsMS); | ||||||||
| 15435 | } | ||||||||
| 15436 | |||||||||
| 15437 | ExprResult Sema::ActOnGNUNullExpr(SourceLocation TokenLoc) { | ||||||||
| 15438 | // The type of __null will be int or long, depending on the size of | ||||||||
| 15439 | // pointers on the target. | ||||||||
| 15440 | QualType Ty; | ||||||||
| 15441 | unsigned pw = Context.getTargetInfo().getPointerWidth(0); | ||||||||
| 15442 | if (pw == Context.getTargetInfo().getIntWidth()) | ||||||||
| 15443 | Ty = Context.IntTy; | ||||||||
| 15444 | else if (pw == Context.getTargetInfo().getLongWidth()) | ||||||||
| 15445 | Ty = Context.LongTy; | ||||||||
| 15446 | else if (pw == Context.getTargetInfo().getLongLongWidth()) | ||||||||
| 15447 | Ty = Context.LongLongTy; | ||||||||
| 15448 | else { | ||||||||
| 15449 | llvm_unreachable("I don't know size of pointer!")::llvm::llvm_unreachable_internal("I don't know size of pointer!" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15449); | ||||||||
| 15450 | } | ||||||||
| 15451 | |||||||||
| 15452 | return new (Context) GNUNullExpr(Ty, TokenLoc); | ||||||||
| 15453 | } | ||||||||
| 15454 | |||||||||
| 15455 | ExprResult Sema::ActOnSourceLocExpr(SourceLocExpr::IdentKind Kind, | ||||||||
| 15456 | SourceLocation BuiltinLoc, | ||||||||
| 15457 | SourceLocation RPLoc) { | ||||||||
| 15458 | return BuildSourceLocExpr(Kind, BuiltinLoc, RPLoc, CurContext); | ||||||||
| 15459 | } | ||||||||
| 15460 | |||||||||
| 15461 | ExprResult Sema::BuildSourceLocExpr(SourceLocExpr::IdentKind Kind, | ||||||||
| 15462 | SourceLocation BuiltinLoc, | ||||||||
| 15463 | SourceLocation RPLoc, | ||||||||
| 15464 | DeclContext *ParentContext) { | ||||||||
| 15465 | return new (Context) | ||||||||
| 15466 | SourceLocExpr(Context, Kind, BuiltinLoc, RPLoc, ParentContext); | ||||||||
| 15467 | } | ||||||||
| 15468 | |||||||||
| 15469 | bool Sema::CheckConversionToObjCLiteral(QualType DstType, Expr *&Exp, | ||||||||
| 15470 | bool Diagnose) { | ||||||||
| 15471 | if (!getLangOpts().ObjC) | ||||||||
| 15472 | return false; | ||||||||
| 15473 | |||||||||
| 15474 | const ObjCObjectPointerType *PT = DstType->getAs<ObjCObjectPointerType>(); | ||||||||
| 15475 | if (!PT) | ||||||||
| 15476 | return false; | ||||||||
| 15477 | const ObjCInterfaceDecl *ID = PT->getInterfaceDecl(); | ||||||||
| 15478 | |||||||||
| 15479 | // Ignore any parens, implicit casts (should only be | ||||||||
| 15480 | // array-to-pointer decays), and not-so-opaque values. The last is | ||||||||
| 15481 | // important for making this trigger for property assignments. | ||||||||
| 15482 | Expr *SrcExpr = Exp->IgnoreParenImpCasts(); | ||||||||
| 15483 | if (OpaqueValueExpr *OV = dyn_cast<OpaqueValueExpr>(SrcExpr)) | ||||||||
| 15484 | if (OV->getSourceExpr()) | ||||||||
| 15485 | SrcExpr = OV->getSourceExpr()->IgnoreParenImpCasts(); | ||||||||
| 15486 | |||||||||
| 15487 | if (auto *SL = dyn_cast<StringLiteral>(SrcExpr)) { | ||||||||
| 15488 | if (!PT->isObjCIdType() && | ||||||||
| 15489 | !(ID && ID->getIdentifier()->isStr("NSString"))) | ||||||||
| 15490 | return false; | ||||||||
| 15491 | if (!SL->isAscii()) | ||||||||
| 15492 | return false; | ||||||||
| 15493 | |||||||||
| 15494 | if (Diagnose) { | ||||||||
| 15495 | Diag(SL->getBeginLoc(), diag::err_missing_atsign_prefix) | ||||||||
| 15496 | << /*string*/0 << FixItHint::CreateInsertion(SL->getBeginLoc(), "@"); | ||||||||
| 15497 | Exp = BuildObjCStringLiteral(SL->getBeginLoc(), SL).get(); | ||||||||
| 15498 | } | ||||||||
| 15499 | return true; | ||||||||
| 15500 | } | ||||||||
| 15501 | |||||||||
| 15502 | if ((isa<IntegerLiteral>(SrcExpr) || isa<CharacterLiteral>(SrcExpr) || | ||||||||
| 15503 | isa<FloatingLiteral>(SrcExpr) || isa<ObjCBoolLiteralExpr>(SrcExpr) || | ||||||||
| 15504 | isa<CXXBoolLiteralExpr>(SrcExpr)) && | ||||||||
| 15505 | !SrcExpr->isNullPointerConstant( | ||||||||
| 15506 | getASTContext(), Expr::NPC_NeverValueDependent)) { | ||||||||
| 15507 | if (!ID || !ID->getIdentifier()->isStr("NSNumber")) | ||||||||
| 15508 | return false; | ||||||||
| 15509 | if (Diagnose) { | ||||||||
| 15510 | Diag(SrcExpr->getBeginLoc(), diag::err_missing_atsign_prefix) | ||||||||
| 15511 | << /*number*/1 | ||||||||
| 15512 | << FixItHint::CreateInsertion(SrcExpr->getBeginLoc(), "@"); | ||||||||
| 15513 | Expr *NumLit = | ||||||||
| 15514 | BuildObjCNumericLiteral(SrcExpr->getBeginLoc(), SrcExpr).get(); | ||||||||
| 15515 | if (NumLit) | ||||||||
| 15516 | Exp = NumLit; | ||||||||
| 15517 | } | ||||||||
| 15518 | return true; | ||||||||
| 15519 | } | ||||||||
| 15520 | |||||||||
| 15521 | return false; | ||||||||
| 15522 | } | ||||||||
| 15523 | |||||||||
| 15524 | static bool maybeDiagnoseAssignmentToFunction(Sema &S, QualType DstType, | ||||||||
| 15525 | const Expr *SrcExpr) { | ||||||||
| 15526 | if (!DstType->isFunctionPointerType() || | ||||||||
| 15527 | !SrcExpr->getType()->isFunctionType()) | ||||||||
| 15528 | return false; | ||||||||
| 15529 | |||||||||
| 15530 | auto *DRE = dyn_cast<DeclRefExpr>(SrcExpr->IgnoreParenImpCasts()); | ||||||||
| 15531 | if (!DRE) | ||||||||
| 15532 | return false; | ||||||||
| 15533 | |||||||||
| 15534 | auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl()); | ||||||||
| 15535 | if (!FD) | ||||||||
| 15536 | return false; | ||||||||
| 15537 | |||||||||
| 15538 | return !S.checkAddressOfFunctionIsAvailable(FD, | ||||||||
| 15539 | /*Complain=*/true, | ||||||||
| 15540 | SrcExpr->getBeginLoc()); | ||||||||
| 15541 | } | ||||||||
| 15542 | |||||||||
| 15543 | bool Sema::DiagnoseAssignmentResult(AssignConvertType ConvTy, | ||||||||
| 15544 | SourceLocation Loc, | ||||||||
| 15545 | QualType DstType, QualType SrcType, | ||||||||
| 15546 | Expr *SrcExpr, AssignmentAction Action, | ||||||||
| 15547 | bool *Complained) { | ||||||||
| 15548 | if (Complained) | ||||||||
| 15549 | *Complained = false; | ||||||||
| 15550 | |||||||||
| 15551 | // Decode the result (notice that AST's are still created for extensions). | ||||||||
| 15552 | bool CheckInferredResultType = false; | ||||||||
| 15553 | bool isInvalid = false; | ||||||||
| 15554 | unsigned DiagKind = 0; | ||||||||
| 15555 | ConversionFixItGenerator ConvHints; | ||||||||
| 15556 | bool MayHaveConvFixit = false; | ||||||||
| 15557 | bool MayHaveFunctionDiff = false; | ||||||||
| 15558 | const ObjCInterfaceDecl *IFace = nullptr; | ||||||||
| 15559 | const ObjCProtocolDecl *PDecl = nullptr; | ||||||||
| 15560 | |||||||||
| 15561 | switch (ConvTy) { | ||||||||
| 15562 | case Compatible: | ||||||||
| 15563 | DiagnoseAssignmentEnum(DstType, SrcType, SrcExpr); | ||||||||
| 15564 | return false; | ||||||||
| 15565 | |||||||||
| 15566 | case PointerToInt: | ||||||||
| 15567 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15568 | DiagKind = diag::err_typecheck_convert_pointer_int; | ||||||||
| 15569 | isInvalid = true; | ||||||||
| 15570 | } else { | ||||||||
| 15571 | DiagKind = diag::ext_typecheck_convert_pointer_int; | ||||||||
| 15572 | } | ||||||||
| 15573 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
| 15574 | MayHaveConvFixit = true; | ||||||||
| 15575 | break; | ||||||||
| 15576 | case IntToPointer: | ||||||||
| 15577 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15578 | DiagKind = diag::err_typecheck_convert_int_pointer; | ||||||||
| 15579 | isInvalid = true; | ||||||||
| 15580 | } else { | ||||||||
| 15581 | DiagKind = diag::ext_typecheck_convert_int_pointer; | ||||||||
| 15582 | } | ||||||||
| 15583 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
| 15584 | MayHaveConvFixit = true; | ||||||||
| 15585 | break; | ||||||||
| 15586 | case IncompatibleFunctionPointer: | ||||||||
| 15587 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15588 | DiagKind = diag::err_typecheck_convert_incompatible_function_pointer; | ||||||||
| 15589 | isInvalid = true; | ||||||||
| 15590 | } else { | ||||||||
| 15591 | DiagKind = diag::ext_typecheck_convert_incompatible_function_pointer; | ||||||||
| 15592 | } | ||||||||
| 15593 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
| 15594 | MayHaveConvFixit = true; | ||||||||
| 15595 | break; | ||||||||
| 15596 | case IncompatiblePointer: | ||||||||
| 15597 | if (Action == AA_Passing_CFAudited) { | ||||||||
| 15598 | DiagKind = diag::err_arc_typecheck_convert_incompatible_pointer; | ||||||||
| 15599 | } else if (getLangOpts().CPlusPlus) { | ||||||||
| 15600 | DiagKind = diag::err_typecheck_convert_incompatible_pointer; | ||||||||
| 15601 | isInvalid = true; | ||||||||
| 15602 | } else { | ||||||||
| 15603 | DiagKind = diag::ext_typecheck_convert_incompatible_pointer; | ||||||||
| 15604 | } | ||||||||
| 15605 | CheckInferredResultType = DstType->isObjCObjectPointerType() && | ||||||||
| 15606 | SrcType->isObjCObjectPointerType(); | ||||||||
| 15607 | if (!CheckInferredResultType) { | ||||||||
| 15608 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
| 15609 | } else if (CheckInferredResultType) { | ||||||||
| 15610 | SrcType = SrcType.getUnqualifiedType(); | ||||||||
| 15611 | DstType = DstType.getUnqualifiedType(); | ||||||||
| 15612 | } | ||||||||
| 15613 | MayHaveConvFixit = true; | ||||||||
| 15614 | break; | ||||||||
| 15615 | case IncompatiblePointerSign: | ||||||||
| 15616 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15617 | DiagKind = diag::err_typecheck_convert_incompatible_pointer_sign; | ||||||||
| 15618 | isInvalid = true; | ||||||||
| 15619 | } else { | ||||||||
| 15620 | DiagKind = diag::ext_typecheck_convert_incompatible_pointer_sign; | ||||||||
| 15621 | } | ||||||||
| 15622 | break; | ||||||||
| 15623 | case FunctionVoidPointer: | ||||||||
| 15624 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15625 | DiagKind = diag::err_typecheck_convert_pointer_void_func; | ||||||||
| 15626 | isInvalid = true; | ||||||||
| 15627 | } else { | ||||||||
| 15628 | DiagKind = diag::ext_typecheck_convert_pointer_void_func; | ||||||||
| 15629 | } | ||||||||
| 15630 | break; | ||||||||
| 15631 | case IncompatiblePointerDiscardsQualifiers: { | ||||||||
| 15632 | // Perform array-to-pointer decay if necessary. | ||||||||
| 15633 | if (SrcType->isArrayType()) SrcType = Context.getArrayDecayedType(SrcType); | ||||||||
| 15634 | |||||||||
| 15635 | isInvalid = true; | ||||||||
| 15636 | |||||||||
| 15637 | Qualifiers lhq = SrcType->getPointeeType().getQualifiers(); | ||||||||
| 15638 | Qualifiers rhq = DstType->getPointeeType().getQualifiers(); | ||||||||
| 15639 | if (lhq.getAddressSpace() != rhq.getAddressSpace()) { | ||||||||
| 15640 | DiagKind = diag::err_typecheck_incompatible_address_space; | ||||||||
| 15641 | break; | ||||||||
| 15642 | |||||||||
| 15643 | } else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) { | ||||||||
| 15644 | DiagKind = diag::err_typecheck_incompatible_ownership; | ||||||||
| 15645 | break; | ||||||||
| 15646 | } | ||||||||
| 15647 | |||||||||
| 15648 | llvm_unreachable("unknown error case for discarding qualifiers!")::llvm::llvm_unreachable_internal("unknown error case for discarding qualifiers!" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15648); | ||||||||
| 15649 | // fallthrough | ||||||||
| 15650 | } | ||||||||
| 15651 | case CompatiblePointerDiscardsQualifiers: | ||||||||
| 15652 | // If the qualifiers lost were because we were applying the | ||||||||
| 15653 | // (deprecated) C++ conversion from a string literal to a char* | ||||||||
| 15654 | // (or wchar_t*), then there was no error (C++ 4.2p2). FIXME: | ||||||||
| 15655 | // Ideally, this check would be performed in | ||||||||
| 15656 | // checkPointerTypesForAssignment. However, that would require a | ||||||||
| 15657 | // bit of refactoring (so that the second argument is an | ||||||||
| 15658 | // expression, rather than a type), which should be done as part | ||||||||
| 15659 | // of a larger effort to fix checkPointerTypesForAssignment for | ||||||||
| 15660 | // C++ semantics. | ||||||||
| 15661 | if (getLangOpts().CPlusPlus && | ||||||||
| 15662 | IsStringLiteralToNonConstPointerConversion(SrcExpr, DstType)) | ||||||||
| 15663 | return false; | ||||||||
| 15664 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15665 | DiagKind = diag::err_typecheck_convert_discards_qualifiers; | ||||||||
| 15666 | isInvalid = true; | ||||||||
| 15667 | } else { | ||||||||
| 15668 | DiagKind = diag::ext_typecheck_convert_discards_qualifiers; | ||||||||
| 15669 | } | ||||||||
| 15670 | |||||||||
| 15671 | break; | ||||||||
| 15672 | case IncompatibleNestedPointerQualifiers: | ||||||||
| 15673 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15674 | isInvalid = true; | ||||||||
| 15675 | DiagKind = diag::err_nested_pointer_qualifier_mismatch; | ||||||||
| 15676 | } else { | ||||||||
| 15677 | DiagKind = diag::ext_nested_pointer_qualifier_mismatch; | ||||||||
| 15678 | } | ||||||||
| 15679 | break; | ||||||||
| 15680 | case IncompatibleNestedPointerAddressSpaceMismatch: | ||||||||
| 15681 | DiagKind = diag::err_typecheck_incompatible_nested_address_space; | ||||||||
| 15682 | isInvalid = true; | ||||||||
| 15683 | break; | ||||||||
| 15684 | case IntToBlockPointer: | ||||||||
| 15685 | DiagKind = diag::err_int_to_block_pointer; | ||||||||
| 15686 | isInvalid = true; | ||||||||
| 15687 | break; | ||||||||
| 15688 | case IncompatibleBlockPointer: | ||||||||
| 15689 | DiagKind = diag::err_typecheck_convert_incompatible_block_pointer; | ||||||||
| 15690 | isInvalid = true; | ||||||||
| 15691 | break; | ||||||||
| 15692 | case IncompatibleObjCQualifiedId: { | ||||||||
| 15693 | if (SrcType->isObjCQualifiedIdType()) { | ||||||||
| 15694 | const ObjCObjectPointerType *srcOPT = | ||||||||
| 15695 | SrcType->castAs<ObjCObjectPointerType>(); | ||||||||
| 15696 | for (auto *srcProto : srcOPT->quals()) { | ||||||||
| 15697 | PDecl = srcProto; | ||||||||
| 15698 | break; | ||||||||
| 15699 | } | ||||||||
| 15700 | if (const ObjCInterfaceType *IFaceT = | ||||||||
| 15701 | DstType->castAs<ObjCObjectPointerType>()->getInterfaceType()) | ||||||||
| 15702 | IFace = IFaceT->getDecl(); | ||||||||
| 15703 | } | ||||||||
| 15704 | else if (DstType->isObjCQualifiedIdType()) { | ||||||||
| 15705 | const ObjCObjectPointerType *dstOPT = | ||||||||
| 15706 | DstType->castAs<ObjCObjectPointerType>(); | ||||||||
| 15707 | for (auto *dstProto : dstOPT->quals()) { | ||||||||
| 15708 | PDecl = dstProto; | ||||||||
| 15709 | break; | ||||||||
| 15710 | } | ||||||||
| 15711 | if (const ObjCInterfaceType *IFaceT = | ||||||||
| 15712 | SrcType->castAs<ObjCObjectPointerType>()->getInterfaceType()) | ||||||||
| 15713 | IFace = IFaceT->getDecl(); | ||||||||
| 15714 | } | ||||||||
| 15715 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15716 | DiagKind = diag::err_incompatible_qualified_id; | ||||||||
| 15717 | isInvalid = true; | ||||||||
| 15718 | } else { | ||||||||
| 15719 | DiagKind = diag::warn_incompatible_qualified_id; | ||||||||
| 15720 | } | ||||||||
| 15721 | break; | ||||||||
| 15722 | } | ||||||||
| 15723 | case IncompatibleVectors: | ||||||||
| 15724 | if (getLangOpts().CPlusPlus) { | ||||||||
| 15725 | DiagKind = diag::err_incompatible_vectors; | ||||||||
| 15726 | isInvalid = true; | ||||||||
| 15727 | } else { | ||||||||
| 15728 | DiagKind = diag::warn_incompatible_vectors; | ||||||||
| 15729 | } | ||||||||
| 15730 | break; | ||||||||
| 15731 | case IncompatibleObjCWeakRef: | ||||||||
| 15732 | DiagKind = diag::err_arc_weak_unavailable_assign; | ||||||||
| 15733 | isInvalid = true; | ||||||||
| 15734 | break; | ||||||||
| 15735 | case Incompatible: | ||||||||
| 15736 | if (maybeDiagnoseAssignmentToFunction(*this, DstType, SrcExpr)) { | ||||||||
| 15737 | if (Complained) | ||||||||
| 15738 | *Complained = true; | ||||||||
| 15739 | return true; | ||||||||
| 15740 | } | ||||||||
| 15741 | |||||||||
| 15742 | DiagKind = diag::err_typecheck_convert_incompatible; | ||||||||
| 15743 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||||||
| 15744 | MayHaveConvFixit = true; | ||||||||
| 15745 | isInvalid = true; | ||||||||
| 15746 | MayHaveFunctionDiff = true; | ||||||||
| 15747 | break; | ||||||||
| 15748 | } | ||||||||
| 15749 | |||||||||
| 15750 | QualType FirstType, SecondType; | ||||||||
| 15751 | switch (Action) { | ||||||||
| 15752 | case AA_Assigning: | ||||||||
| 15753 | case AA_Initializing: | ||||||||
| 15754 | // The destination type comes first. | ||||||||
| 15755 | FirstType = DstType; | ||||||||
| 15756 | SecondType = SrcType; | ||||||||
| 15757 | break; | ||||||||
| 15758 | |||||||||
| 15759 | case AA_Returning: | ||||||||
| 15760 | case AA_Passing: | ||||||||
| 15761 | case AA_Passing_CFAudited: | ||||||||
| 15762 | case AA_Converting: | ||||||||
| 15763 | case AA_Sending: | ||||||||
| 15764 | case AA_Casting: | ||||||||
| 15765 | // The source type comes first. | ||||||||
| 15766 | FirstType = SrcType; | ||||||||
| 15767 | SecondType = DstType; | ||||||||
| 15768 | break; | ||||||||
| 15769 | } | ||||||||
| 15770 | |||||||||
| 15771 | PartialDiagnostic FDiag = PDiag(DiagKind); | ||||||||
| 15772 | if (Action == AA_Passing_CFAudited) | ||||||||
| 15773 | FDiag << FirstType << SecondType << AA_Passing << SrcExpr->getSourceRange(); | ||||||||
| 15774 | else | ||||||||
| 15775 | FDiag << FirstType << SecondType << Action << SrcExpr->getSourceRange(); | ||||||||
| 15776 | |||||||||
| 15777 | // If we can fix the conversion, suggest the FixIts. | ||||||||
| 15778 | if (!ConvHints.isNull()) { | ||||||||
| 15779 | for (FixItHint &H : ConvHints.Hints) | ||||||||
| 15780 | FDiag << H; | ||||||||
| 15781 | } | ||||||||
| 15782 | |||||||||
| 15783 | if (MayHaveConvFixit) { FDiag << (unsigned) (ConvHints.Kind); } | ||||||||
| 15784 | |||||||||
| 15785 | if (MayHaveFunctionDiff) | ||||||||
| 15786 | HandleFunctionTypeMismatch(FDiag, SecondType, FirstType); | ||||||||
| 15787 | |||||||||
| 15788 | Diag(Loc, FDiag); | ||||||||
| 15789 | if ((DiagKind == diag::warn_incompatible_qualified_id || | ||||||||
| 15790 | DiagKind == diag::err_incompatible_qualified_id) && | ||||||||
| 15791 | PDecl && IFace && !IFace->hasDefinition()) | ||||||||
| 15792 | Diag(IFace->getLocation(), diag::note_incomplete_class_and_qualified_id) | ||||||||
| 15793 | << IFace << PDecl; | ||||||||
| 15794 | |||||||||
| 15795 | if (SecondType == Context.OverloadTy) | ||||||||
| 15796 | NoteAllOverloadCandidates(OverloadExpr::find(SrcExpr).Expression, | ||||||||
| 15797 | FirstType, /*TakingAddress=*/true); | ||||||||
| 15798 | |||||||||
| 15799 | if (CheckInferredResultType) | ||||||||
| 15800 | EmitRelatedResultTypeNote(SrcExpr); | ||||||||
| 15801 | |||||||||
| 15802 | if (Action == AA_Returning && ConvTy == IncompatiblePointer) | ||||||||
| 15803 | EmitRelatedResultTypeNoteForReturn(DstType); | ||||||||
| 15804 | |||||||||
| 15805 | if (Complained) | ||||||||
| 15806 | *Complained = true; | ||||||||
| 15807 | return isInvalid; | ||||||||
| 15808 | } | ||||||||
| 15809 | |||||||||
| 15810 | ExprResult Sema::VerifyIntegerConstantExpression(Expr *E, | ||||||||
| 15811 | llvm::APSInt *Result) { | ||||||||
| 15812 | class SimpleICEDiagnoser : public VerifyICEDiagnoser { | ||||||||
| 15813 | public: | ||||||||
| 15814 | void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) override { | ||||||||
| 15815 | S.Diag(Loc, diag::err_expr_not_ice) << S.LangOpts.CPlusPlus << SR; | ||||||||
| 15816 | } | ||||||||
| 15817 | } Diagnoser; | ||||||||
| 15818 | |||||||||
| 15819 | return VerifyIntegerConstantExpression(E, Result, Diagnoser); | ||||||||
| 15820 | } | ||||||||
| 15821 | |||||||||
| 15822 | ExprResult Sema::VerifyIntegerConstantExpression(Expr *E, | ||||||||
| 15823 | llvm::APSInt *Result, | ||||||||
| 15824 | unsigned DiagID, | ||||||||
| 15825 | bool AllowFold) { | ||||||||
| 15826 | class IDDiagnoser : public VerifyICEDiagnoser { | ||||||||
| 15827 | unsigned DiagID; | ||||||||
| 15828 | |||||||||
| 15829 | public: | ||||||||
| 15830 | IDDiagnoser(unsigned DiagID) | ||||||||
| 15831 | : VerifyICEDiagnoser(DiagID == 0), DiagID(DiagID) { } | ||||||||
| 15832 | |||||||||
| 15833 | void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) override { | ||||||||
| 15834 | S.Diag(Loc, DiagID) << SR; | ||||||||
| 15835 | } | ||||||||
| 15836 | } Diagnoser(DiagID); | ||||||||
| 15837 | |||||||||
| 15838 | return VerifyIntegerConstantExpression(E, Result, Diagnoser, AllowFold); | ||||||||
| 15839 | } | ||||||||
| 15840 | |||||||||
| 15841 | void Sema::VerifyICEDiagnoser::diagnoseFold(Sema &S, SourceLocation Loc, | ||||||||
| 15842 | SourceRange SR) { | ||||||||
| 15843 | S.Diag(Loc, diag::ext_expr_not_ice) << SR << S.LangOpts.CPlusPlus; | ||||||||
| 15844 | } | ||||||||
| 15845 | |||||||||
| 15846 | ExprResult | ||||||||
| 15847 | Sema::VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, | ||||||||
| 15848 | VerifyICEDiagnoser &Diagnoser, | ||||||||
| 15849 | bool AllowFold) { | ||||||||
| 15850 | SourceLocation DiagLoc = E->getBeginLoc(); | ||||||||
| 15851 | |||||||||
| 15852 | if (getLangOpts().CPlusPlus11) { | ||||||||
| 15853 | // C++11 [expr.const]p5: | ||||||||
| 15854 | // If an expression of literal class type is used in a context where an | ||||||||
| 15855 | // integral constant expression is required, then that class type shall | ||||||||
| 15856 | // have a single non-explicit conversion function to an integral or | ||||||||
| 15857 | // unscoped enumeration type | ||||||||
| 15858 | ExprResult Converted; | ||||||||
| 15859 | class CXX11ConvertDiagnoser : public ICEConvertDiagnoser { | ||||||||
| 15860 | public: | ||||||||
| 15861 | CXX11ConvertDiagnoser(bool Silent) | ||||||||
| 15862 | : ICEConvertDiagnoser(/*AllowScopedEnumerations*/false, | ||||||||
| 15863 | Silent, true) {} | ||||||||
| 15864 | |||||||||
| 15865 | SemaDiagnosticBuilder diagnoseNotInt(Sema &S, SourceLocation Loc, | ||||||||
| 15866 | QualType T) override { | ||||||||
| 15867 | return S.Diag(Loc, diag::err_ice_not_integral) << T; | ||||||||
| 15868 | } | ||||||||
| 15869 | |||||||||
| 15870 | SemaDiagnosticBuilder diagnoseIncomplete( | ||||||||
| 15871 | Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
| 15872 | return S.Diag(Loc, diag::err_ice_incomplete_type) << T; | ||||||||
| 15873 | } | ||||||||
| 15874 | |||||||||
| 15875 | SemaDiagnosticBuilder diagnoseExplicitConv( | ||||||||
| 15876 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) override { | ||||||||
| 15877 | return S.Diag(Loc, diag::err_ice_explicit_conversion) << T << ConvTy; | ||||||||
| 15878 | } | ||||||||
| 15879 | |||||||||
| 15880 | SemaDiagnosticBuilder noteExplicitConv( | ||||||||
| 15881 | Sema &S, CXXConversionDecl *Conv, QualType ConvTy) override { | ||||||||
| 15882 | return S.Diag(Conv->getLocation(), diag::note_ice_conversion_here) | ||||||||
| 15883 | << ConvTy->isEnumeralType() << ConvTy; | ||||||||
| 15884 | } | ||||||||
| 15885 | |||||||||
| 15886 | SemaDiagnosticBuilder diagnoseAmbiguous( | ||||||||
| 15887 | Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
| 15888 | return S.Diag(Loc, diag::err_ice_ambiguous_conversion) << T; | ||||||||
| 15889 | } | ||||||||
| 15890 | |||||||||
| 15891 | SemaDiagnosticBuilder noteAmbiguous( | ||||||||
| 15892 | Sema &S, CXXConversionDecl *Conv, QualType ConvTy) override { | ||||||||
| 15893 | return S.Diag(Conv->getLocation(), diag::note_ice_conversion_here) | ||||||||
| 15894 | << ConvTy->isEnumeralType() << ConvTy; | ||||||||
| 15895 | } | ||||||||
| 15896 | |||||||||
| 15897 | SemaDiagnosticBuilder diagnoseConversion( | ||||||||
| 15898 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) override { | ||||||||
| 15899 | llvm_unreachable("conversion functions are permitted")::llvm::llvm_unreachable_internal("conversion functions are permitted" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 15899); | ||||||||
| 15900 | } | ||||||||
| 15901 | } ConvertDiagnoser(Diagnoser.Suppress); | ||||||||
| 15902 | |||||||||
| 15903 | Converted = PerformContextualImplicitConversion(DiagLoc, E, | ||||||||
| 15904 | ConvertDiagnoser); | ||||||||
| 15905 | if (Converted.isInvalid()) | ||||||||
| 15906 | return Converted; | ||||||||
| 15907 | E = Converted.get(); | ||||||||
| 15908 | if (!E->getType()->isIntegralOrUnscopedEnumerationType()) | ||||||||
| 15909 | return ExprError(); | ||||||||
| 15910 | } else if (!E->getType()->isIntegralOrUnscopedEnumerationType()) { | ||||||||
| 15911 | // An ICE must be of integral or unscoped enumeration type. | ||||||||
| 15912 | if (!Diagnoser.Suppress) | ||||||||
| 15913 | Diagnoser.diagnoseNotICE(*this, DiagLoc, E->getSourceRange()); | ||||||||
| 15914 | return ExprError(); | ||||||||
| 15915 | } | ||||||||
| 15916 | |||||||||
| 15917 | ExprResult RValueExpr = DefaultLvalueConversion(E); | ||||||||
| 15918 | if (RValueExpr.isInvalid()) | ||||||||
| 15919 | return ExprError(); | ||||||||
| 15920 | |||||||||
| 15921 | E = RValueExpr.get(); | ||||||||
| 15922 | |||||||||
| 15923 | // Circumvent ICE checking in C++11 to avoid evaluating the expression twice | ||||||||
| 15924 | // in the non-ICE case. | ||||||||
| 15925 | if (!getLangOpts().CPlusPlus11 && E->isIntegerConstantExpr(Context)) { | ||||||||
| 15926 | if (Result) | ||||||||
| 15927 | *Result = E->EvaluateKnownConstIntCheckOverflow(Context); | ||||||||
| 15928 | if (!isa<ConstantExpr>(E)) | ||||||||
| 15929 | E = ConstantExpr::Create(Context, E); | ||||||||
| 15930 | return E; | ||||||||
| 15931 | } | ||||||||
| 15932 | |||||||||
| 15933 | Expr::EvalResult EvalResult; | ||||||||
| 15934 | SmallVector<PartialDiagnosticAt, 8> Notes; | ||||||||
| 15935 | EvalResult.Diag = &Notes; | ||||||||
| 15936 | |||||||||
| 15937 | // Try to evaluate the expression, and produce diagnostics explaining why it's | ||||||||
| 15938 | // not a constant expression as a side-effect. | ||||||||
| 15939 | bool Folded = | ||||||||
| 15940 | E->EvaluateAsRValue(EvalResult, Context, /*isConstantContext*/ true) && | ||||||||
| 15941 | EvalResult.Val.isInt() && !EvalResult.HasSideEffects; | ||||||||
| 15942 | |||||||||
| 15943 | if (!isa<ConstantExpr>(E)) | ||||||||
| 15944 | E = ConstantExpr::Create(Context, E, EvalResult.Val); | ||||||||
| 15945 | |||||||||
| 15946 | // In C++11, we can rely on diagnostics being produced for any expression | ||||||||
| 15947 | // which is not a constant expression. If no diagnostics were produced, then | ||||||||
| 15948 | // this is a constant expression. | ||||||||
| 15949 | if (Folded && getLangOpts().CPlusPlus11 && Notes.empty()) { | ||||||||
| 15950 | if (Result) | ||||||||
| 15951 | *Result = EvalResult.Val.getInt(); | ||||||||
| 15952 | return E; | ||||||||
| 15953 | } | ||||||||
| 15954 | |||||||||
| 15955 | // If our only note is the usual "invalid subexpression" note, just point | ||||||||
| 15956 | // the caret at its location rather than producing an essentially | ||||||||
| 15957 | // redundant note. | ||||||||
| 15958 | if (Notes.size() == 1 && Notes[0].second.getDiagID() == | ||||||||
| 15959 | diag::note_invalid_subexpr_in_const_expr) { | ||||||||
| 15960 | DiagLoc = Notes[0].first; | ||||||||
| 15961 | Notes.clear(); | ||||||||
| 15962 | } | ||||||||
| 15963 | |||||||||
| 15964 | if (!Folded || !AllowFold) { | ||||||||
| 15965 | if (!Diagnoser.Suppress) { | ||||||||
| 15966 | Diagnoser.diagnoseNotICE(*this, DiagLoc, E->getSourceRange()); | ||||||||
| 15967 | for (const PartialDiagnosticAt &Note : Notes) | ||||||||
| 15968 | Diag(Note.first, Note.second); | ||||||||
| 15969 | } | ||||||||
| 15970 | |||||||||
| 15971 | return ExprError(); | ||||||||
| 15972 | } | ||||||||
| 15973 | |||||||||
| 15974 | Diagnoser.diagnoseFold(*this, DiagLoc, E->getSourceRange()); | ||||||||
| 15975 | for (const PartialDiagnosticAt &Note : Notes) | ||||||||
| 15976 | Diag(Note.first, Note.second); | ||||||||
| 15977 | |||||||||
| 15978 | if (Result) | ||||||||
| 15979 | *Result = EvalResult.Val.getInt(); | ||||||||
| 15980 | return E; | ||||||||
| 15981 | } | ||||||||
| 15982 | |||||||||
| 15983 | namespace { | ||||||||
| 15984 | // Handle the case where we conclude a expression which we speculatively | ||||||||
| 15985 | // considered to be unevaluated is actually evaluated. | ||||||||
| 15986 | class TransformToPE : public TreeTransform<TransformToPE> { | ||||||||
| 15987 | typedef TreeTransform<TransformToPE> BaseTransform; | ||||||||
| 15988 | |||||||||
| 15989 | public: | ||||||||
| 15990 | TransformToPE(Sema &SemaRef) : BaseTransform(SemaRef) { } | ||||||||
| 15991 | |||||||||
| 15992 | // Make sure we redo semantic analysis | ||||||||
| 15993 | bool AlwaysRebuild() { return true; } | ||||||||
| 15994 | bool ReplacingOriginal() { return true; } | ||||||||
| 15995 | |||||||||
| 15996 | // We need to special-case DeclRefExprs referring to FieldDecls which | ||||||||
| 15997 | // are not part of a member pointer formation; normal TreeTransforming | ||||||||
| 15998 | // doesn't catch this case because of the way we represent them in the AST. | ||||||||
| 15999 | // FIXME: This is a bit ugly; is it really the best way to handle this | ||||||||
| 16000 | // case? | ||||||||
| 16001 | // | ||||||||
| 16002 | // Error on DeclRefExprs referring to FieldDecls. | ||||||||
| 16003 | ExprResult TransformDeclRefExpr(DeclRefExpr *E) { | ||||||||
| 16004 | if (isa<FieldDecl>(E->getDecl()) && | ||||||||
| 16005 | !SemaRef.isUnevaluatedContext()) | ||||||||
| 16006 | return SemaRef.Diag(E->getLocation(), | ||||||||
| 16007 | diag::err_invalid_non_static_member_use) | ||||||||
| 16008 | << E->getDecl() << E->getSourceRange(); | ||||||||
| 16009 | |||||||||
| 16010 | return BaseTransform::TransformDeclRefExpr(E); | ||||||||
| 16011 | } | ||||||||
| 16012 | |||||||||
| 16013 | // Exception: filter out member pointer formation | ||||||||
| 16014 | ExprResult TransformUnaryOperator(UnaryOperator *E) { | ||||||||
| 16015 | if (E->getOpcode() == UO_AddrOf && E->getType()->isMemberPointerType()) | ||||||||
| 16016 | return E; | ||||||||
| 16017 | |||||||||
| 16018 | return BaseTransform::TransformUnaryOperator(E); | ||||||||
| 16019 | } | ||||||||
| 16020 | |||||||||
| 16021 | // The body of a lambda-expression is in a separate expression evaluation | ||||||||
| 16022 | // context so never needs to be transformed. | ||||||||
| 16023 | // FIXME: Ideally we wouldn't transform the closure type either, and would | ||||||||
| 16024 | // just recreate the capture expressions and lambda expression. | ||||||||
| 16025 | StmtResult TransformLambdaBody(LambdaExpr *E, Stmt *Body) { | ||||||||
| 16026 | return SkipLambdaBody(E, Body); | ||||||||
| 16027 | } | ||||||||
| 16028 | }; | ||||||||
| 16029 | } | ||||||||
| 16030 | |||||||||
| 16031 | ExprResult Sema::TransformToPotentiallyEvaluated(Expr *E) { | ||||||||
| 16032 | assert(isUnevaluatedContext() &&((isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? static_cast<void> (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16033, __PRETTY_FUNCTION__)) | ||||||||
| 16033 | "Should only transform unevaluated expressions")((isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? static_cast<void> (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16033, __PRETTY_FUNCTION__)); | ||||||||
| 16034 | ExprEvalContexts.back().Context = | ||||||||
| 16035 | ExprEvalContexts[ExprEvalContexts.size()-2].Context; | ||||||||
| 16036 | if (isUnevaluatedContext()) | ||||||||
| 16037 | return E; | ||||||||
| 16038 | return TransformToPE(*this).TransformExpr(E); | ||||||||
| 16039 | } | ||||||||
| 16040 | |||||||||
| 16041 | void | ||||||||
| 16042 | Sema::PushExpressionEvaluationContext( | ||||||||
| 16043 | ExpressionEvaluationContext NewContext, Decl *LambdaContextDecl, | ||||||||
| 16044 | ExpressionEvaluationContextRecord::ExpressionKind ExprContext) { | ||||||||
| 16045 | ExprEvalContexts.emplace_back(NewContext, ExprCleanupObjects.size(), Cleanup, | ||||||||
| 16046 | LambdaContextDecl, ExprContext); | ||||||||
| 16047 | Cleanup.reset(); | ||||||||
| 16048 | if (!MaybeODRUseExprs.empty()) | ||||||||
| 16049 | std::swap(MaybeODRUseExprs, ExprEvalContexts.back().SavedMaybeODRUseExprs); | ||||||||
| 16050 | } | ||||||||
| 16051 | |||||||||
| 16052 | void | ||||||||
| 16053 | Sema::PushExpressionEvaluationContext( | ||||||||
| 16054 | ExpressionEvaluationContext NewContext, ReuseLambdaContextDecl_t, | ||||||||
| 16055 | ExpressionEvaluationContextRecord::ExpressionKind ExprContext) { | ||||||||
| 16056 | Decl *ClosureContextDecl = ExprEvalContexts.back().ManglingContextDecl; | ||||||||
| 16057 | PushExpressionEvaluationContext(NewContext, ClosureContextDecl, ExprContext); | ||||||||
| 16058 | } | ||||||||
| 16059 | |||||||||
| 16060 | namespace { | ||||||||
| 16061 | |||||||||
| 16062 | const DeclRefExpr *CheckPossibleDeref(Sema &S, const Expr *PossibleDeref) { | ||||||||
| 16063 | PossibleDeref = PossibleDeref->IgnoreParenImpCasts(); | ||||||||
| 16064 | if (const auto *E = dyn_cast<UnaryOperator>(PossibleDeref)) { | ||||||||
| 16065 | if (E->getOpcode() == UO_Deref) | ||||||||
| 16066 | return CheckPossibleDeref(S, E->getSubExpr()); | ||||||||
| 16067 | } else if (const auto *E = dyn_cast<ArraySubscriptExpr>(PossibleDeref)) { | ||||||||
| 16068 | return CheckPossibleDeref(S, E->getBase()); | ||||||||
| 16069 | } else if (const auto *E = dyn_cast<MemberExpr>(PossibleDeref)) { | ||||||||
| 16070 | return CheckPossibleDeref(S, E->getBase()); | ||||||||
| 16071 | } else if (const auto E = dyn_cast<DeclRefExpr>(PossibleDeref)) { | ||||||||
| 16072 | QualType Inner; | ||||||||
| 16073 | QualType Ty = E->getType(); | ||||||||
| 16074 | if (const auto *Ptr = Ty->getAs<PointerType>()) | ||||||||
| 16075 | Inner = Ptr->getPointeeType(); | ||||||||
| 16076 | else if (const auto *Arr = S.Context.getAsArrayType(Ty)) | ||||||||
| 16077 | Inner = Arr->getElementType(); | ||||||||
| 16078 | else | ||||||||
| 16079 | return nullptr; | ||||||||
| 16080 | |||||||||
| 16081 | if (Inner->hasAttr(attr::NoDeref)) | ||||||||
| 16082 | return E; | ||||||||
| 16083 | } | ||||||||
| 16084 | return nullptr; | ||||||||
| 16085 | } | ||||||||
| 16086 | |||||||||
| 16087 | } // namespace | ||||||||
| 16088 | |||||||||
| 16089 | void Sema::WarnOnPendingNoDerefs(ExpressionEvaluationContextRecord &Rec) { | ||||||||
| 16090 | for (const Expr *E : Rec.PossibleDerefs) { | ||||||||
| 16091 | const DeclRefExpr *DeclRef = CheckPossibleDeref(*this, E); | ||||||||
| 16092 | if (DeclRef) { | ||||||||
| 16093 | const ValueDecl *Decl = DeclRef->getDecl(); | ||||||||
| 16094 | Diag(E->getExprLoc(), diag::warn_dereference_of_noderef_type) | ||||||||
| 16095 | << Decl->getName() << E->getSourceRange(); | ||||||||
| 16096 | Diag(Decl->getLocation(), diag::note_previous_decl) << Decl->getName(); | ||||||||
| 16097 | } else { | ||||||||
| 16098 | Diag(E->getExprLoc(), diag::warn_dereference_of_noderef_type_no_decl) | ||||||||
| 16099 | << E->getSourceRange(); | ||||||||
| 16100 | } | ||||||||
| 16101 | } | ||||||||
| 16102 | Rec.PossibleDerefs.clear(); | ||||||||
| 16103 | } | ||||||||
| 16104 | |||||||||
| 16105 | /// Check whether E, which is either a discarded-value expression or an | ||||||||
| 16106 | /// unevaluated operand, is a simple-assignment to a volatlie-qualified lvalue, | ||||||||
| 16107 | /// and if so, remove it from the list of volatile-qualified assignments that | ||||||||
| 16108 | /// we are going to warn are deprecated. | ||||||||
| 16109 | void Sema::CheckUnusedVolatileAssignment(Expr *E) { | ||||||||
| 16110 | if (!E->getType().isVolatileQualified() || !getLangOpts().CPlusPlus20) | ||||||||
| 16111 | return; | ||||||||
| 16112 | |||||||||
| 16113 | // Note: ignoring parens here is not justified by the standard rules, but | ||||||||
| 16114 | // ignoring parentheses seems like a more reasonable approach, and this only | ||||||||
| 16115 | // drives a deprecation warning so doesn't affect conformance. | ||||||||
| 16116 | if (auto *BO = dyn_cast<BinaryOperator>(E->IgnoreParenImpCasts())) { | ||||||||
| 16117 | if (BO->getOpcode() == BO_Assign) { | ||||||||
| 16118 | auto &LHSs = ExprEvalContexts.back().VolatileAssignmentLHSs; | ||||||||
| 16119 | LHSs.erase(std::remove(LHSs.begin(), LHSs.end(), BO->getLHS()), | ||||||||
| 16120 | LHSs.end()); | ||||||||
| 16121 | } | ||||||||
| 16122 | } | ||||||||
| 16123 | } | ||||||||
| 16124 | |||||||||
| 16125 | ExprResult Sema::CheckForImmediateInvocation(ExprResult E, FunctionDecl *Decl) { | ||||||||
| 16126 | if (!E.isUsable() || !Decl || !Decl->isConsteval() || isConstantEvaluated() || | ||||||||
| 16127 | RebuildingImmediateInvocation) | ||||||||
| 16128 | return E; | ||||||||
| 16129 | |||||||||
| 16130 | /// Opportunistically remove the callee from ReferencesToConsteval if we can. | ||||||||
| 16131 | /// It's OK if this fails; we'll also remove this in | ||||||||
| 16132 | /// HandleImmediateInvocations, but catching it here allows us to avoid | ||||||||
| 16133 | /// walking the AST looking for it in simple cases. | ||||||||
| 16134 | if (auto *Call = dyn_cast<CallExpr>(E.get()->IgnoreImplicit())) | ||||||||
| 16135 | if (auto *DeclRef = | ||||||||
| 16136 | dyn_cast<DeclRefExpr>(Call->getCallee()->IgnoreImplicit())) | ||||||||
| 16137 | ExprEvalContexts.back().ReferenceToConsteval.erase(DeclRef); | ||||||||
| 16138 | |||||||||
| 16139 | E = MaybeCreateExprWithCleanups(E); | ||||||||
| 16140 | |||||||||
| 16141 | ConstantExpr *Res = ConstantExpr::Create( | ||||||||
| 16142 | getASTContext(), E.get(), | ||||||||
| 16143 | ConstantExpr::getStorageKind(Decl->getReturnType().getTypePtr(), | ||||||||
| 16144 | getASTContext()), | ||||||||
| 16145 | /*IsImmediateInvocation*/ true); | ||||||||
| 16146 | ExprEvalContexts.back().ImmediateInvocationCandidates.emplace_back(Res, 0); | ||||||||
| 16147 | return Res; | ||||||||
| 16148 | } | ||||||||
| 16149 | |||||||||
| 16150 | static void EvaluateAndDiagnoseImmediateInvocation( | ||||||||
| 16151 | Sema &SemaRef, Sema::ImmediateInvocationCandidate Candidate) { | ||||||||
| 16152 | llvm::SmallVector<PartialDiagnosticAt, 8> Notes; | ||||||||
| 16153 | Expr::EvalResult Eval; | ||||||||
| 16154 | Eval.Diag = &Notes; | ||||||||
| 16155 | ConstantExpr *CE = Candidate.getPointer(); | ||||||||
| 16156 | bool Result = CE->EvaluateAsConstantExpr(Eval, Expr::EvaluateForCodeGen, | ||||||||
| 16157 | SemaRef.getASTContext(), true); | ||||||||
| 16158 | if (!Result || !Notes.empty()) { | ||||||||
| 16159 | Expr *InnerExpr = CE->getSubExpr()->IgnoreImplicit(); | ||||||||
| 16160 | if (auto *FunctionalCast = dyn_cast<CXXFunctionalCastExpr>(InnerExpr)) | ||||||||
| 16161 | InnerExpr = FunctionalCast->getSubExpr(); | ||||||||
| 16162 | FunctionDecl *FD = nullptr; | ||||||||
| 16163 | if (auto *Call = dyn_cast<CallExpr>(InnerExpr)) | ||||||||
| 16164 | FD = cast<FunctionDecl>(Call->getCalleeDecl()); | ||||||||
| 16165 | else if (auto *Call = dyn_cast<CXXConstructExpr>(InnerExpr)) | ||||||||
| 16166 | FD = Call->getConstructor(); | ||||||||
| 16167 | else | ||||||||
| 16168 | llvm_unreachable("unhandled decl kind")::llvm::llvm_unreachable_internal("unhandled decl kind", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16168); | ||||||||
| 16169 | assert(FD->isConsteval())((FD->isConsteval()) ? static_cast<void> (0) : __assert_fail ("FD->isConsteval()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16169, __PRETTY_FUNCTION__)); | ||||||||
| 16170 | SemaRef.Diag(CE->getBeginLoc(), diag::err_invalid_consteval_call) << FD; | ||||||||
| 16171 | for (auto &Note : Notes) | ||||||||
| 16172 | SemaRef.Diag(Note.first, Note.second); | ||||||||
| 16173 | return; | ||||||||
| 16174 | } | ||||||||
| 16175 | CE->MoveIntoResult(Eval.Val, SemaRef.getASTContext()); | ||||||||
| 16176 | } | ||||||||
| 16177 | |||||||||
| 16178 | static void RemoveNestedImmediateInvocation( | ||||||||
| 16179 | Sema &SemaRef, Sema::ExpressionEvaluationContextRecord &Rec, | ||||||||
| 16180 | SmallVector<Sema::ImmediateInvocationCandidate, 4>::reverse_iterator It) { | ||||||||
| 16181 | struct ComplexRemove : TreeTransform<ComplexRemove> { | ||||||||
| 16182 | using Base = TreeTransform<ComplexRemove>; | ||||||||
| 16183 | llvm::SmallPtrSetImpl<DeclRefExpr *> &DRSet; | ||||||||
| 16184 | SmallVector<Sema::ImmediateInvocationCandidate, 4> &IISet; | ||||||||
| 16185 | SmallVector<Sema::ImmediateInvocationCandidate, 4>::reverse_iterator | ||||||||
| 16186 | CurrentII; | ||||||||
| 16187 | ComplexRemove(Sema &SemaRef, llvm::SmallPtrSetImpl<DeclRefExpr *> &DR, | ||||||||
| 16188 | SmallVector<Sema::ImmediateInvocationCandidate, 4> &II, | ||||||||
| 16189 | SmallVector<Sema::ImmediateInvocationCandidate, | ||||||||
| 16190 | 4>::reverse_iterator Current) | ||||||||
| 16191 | : Base(SemaRef), DRSet(DR), IISet(II), CurrentII(Current) {} | ||||||||
| 16192 | void RemoveImmediateInvocation(ConstantExpr* E) { | ||||||||
| 16193 | auto It = std::find_if(CurrentII, IISet.rend(), | ||||||||
| 16194 | [E](Sema::ImmediateInvocationCandidate Elem) { | ||||||||
| 16195 | return Elem.getPointer() == E; | ||||||||
| 16196 | }); | ||||||||
| 16197 | assert(It != IISet.rend() &&((It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? static_cast<void> (0) : __assert_fail ( "It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16199, __PRETTY_FUNCTION__)) | ||||||||
| 16198 | "ConstantExpr marked IsImmediateInvocation should "((It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? static_cast<void> (0) : __assert_fail ( "It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16199, __PRETTY_FUNCTION__)) | ||||||||
| 16199 | "be present")((It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? static_cast<void> (0) : __assert_fail ( "It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16199, __PRETTY_FUNCTION__)); | ||||||||
| 16200 | It->setInt(1); // Mark as deleted | ||||||||
| 16201 | } | ||||||||
| 16202 | ExprResult TransformConstantExpr(ConstantExpr *E) { | ||||||||
| 16203 | if (!E->isImmediateInvocation()) | ||||||||
| 16204 | return Base::TransformConstantExpr(E); | ||||||||
| 16205 | RemoveImmediateInvocation(E); | ||||||||
| 16206 | return Base::TransformExpr(E->getSubExpr()); | ||||||||
| 16207 | } | ||||||||
| 16208 | /// Base::TransfromCXXOperatorCallExpr doesn't traverse the callee so | ||||||||
| 16209 | /// we need to remove its DeclRefExpr from the DRSet. | ||||||||
| 16210 | ExprResult TransformCXXOperatorCallExpr(CXXOperatorCallExpr *E) { | ||||||||
| 16211 | DRSet.erase(cast<DeclRefExpr>(E->getCallee()->IgnoreImplicit())); | ||||||||
| 16212 | return Base::TransformCXXOperatorCallExpr(E); | ||||||||
| 16213 | } | ||||||||
| 16214 | /// Base::TransformInitializer skip ConstantExpr so we need to visit them | ||||||||
| 16215 | /// here. | ||||||||
| 16216 | ExprResult TransformInitializer(Expr *Init, bool NotCopyInit) { | ||||||||
| 16217 | if (!Init) | ||||||||
| 16218 | return Init; | ||||||||
| 16219 | /// ConstantExpr are the first layer of implicit node to be removed so if | ||||||||
| 16220 | /// Init isn't a ConstantExpr, no ConstantExpr will be skipped. | ||||||||
| 16221 | if (auto *CE = dyn_cast<ConstantExpr>(Init)) | ||||||||
| 16222 | if (CE->isImmediateInvocation()) | ||||||||
| 16223 | RemoveImmediateInvocation(CE); | ||||||||
| 16224 | return Base::TransformInitializer(Init, NotCopyInit); | ||||||||
| 16225 | } | ||||||||
| 16226 | ExprResult TransformDeclRefExpr(DeclRefExpr *E) { | ||||||||
| 16227 | DRSet.erase(E); | ||||||||
| 16228 | return E; | ||||||||
| 16229 | } | ||||||||
| 16230 | bool AlwaysRebuild() { return false; } | ||||||||
| 16231 | bool ReplacingOriginal() { return true; } | ||||||||
| 16232 | bool AllowSkippingCXXConstructExpr() { | ||||||||
| 16233 | bool Res = AllowSkippingFirstCXXConstructExpr; | ||||||||
| 16234 | AllowSkippingFirstCXXConstructExpr = true; | ||||||||
| 16235 | return Res; | ||||||||
| 16236 | } | ||||||||
| 16237 | bool AllowSkippingFirstCXXConstructExpr = true; | ||||||||
| 16238 | } Transformer(SemaRef, Rec.ReferenceToConsteval, | ||||||||
| 16239 | Rec.ImmediateInvocationCandidates, It); | ||||||||
| 16240 | |||||||||
| 16241 | /// CXXConstructExpr with a single argument are getting skipped by | ||||||||
| 16242 | /// TreeTransform in some situtation because they could be implicit. This | ||||||||
| 16243 | /// can only occur for the top-level CXXConstructExpr because it is used | ||||||||
| 16244 | /// nowhere in the expression being transformed therefore will not be rebuilt. | ||||||||
| 16245 | /// Setting AllowSkippingFirstCXXConstructExpr to false will prevent from | ||||||||
| 16246 | /// skipping the first CXXConstructExpr. | ||||||||
| 16247 | if (isa<CXXConstructExpr>(It->getPointer()->IgnoreImplicit())) | ||||||||
| 16248 | Transformer.AllowSkippingFirstCXXConstructExpr = false; | ||||||||
| 16249 | |||||||||
| 16250 | ExprResult Res = Transformer.TransformExpr(It->getPointer()->getSubExpr()); | ||||||||
| 16251 | assert(Res.isUsable())((Res.isUsable()) ? static_cast<void> (0) : __assert_fail ("Res.isUsable()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16251, __PRETTY_FUNCTION__)); | ||||||||
| 16252 | Res = SemaRef.MaybeCreateExprWithCleanups(Res); | ||||||||
| 16253 | It->getPointer()->setSubExpr(Res.get()); | ||||||||
| 16254 | } | ||||||||
| 16255 | |||||||||
| 16256 | static void | ||||||||
| 16257 | HandleImmediateInvocations(Sema &SemaRef, | ||||||||
| 16258 | Sema::ExpressionEvaluationContextRecord &Rec) { | ||||||||
| 16259 | if ((Rec.ImmediateInvocationCandidates.size() == 0 && | ||||||||
| 16260 | Rec.ReferenceToConsteval.size() == 0) || | ||||||||
| 16261 | SemaRef.RebuildingImmediateInvocation) | ||||||||
| 16262 | return; | ||||||||
| 16263 | |||||||||
| 16264 | /// When we have more then 1 ImmediateInvocationCandidates we need to check | ||||||||
| 16265 | /// for nested ImmediateInvocationCandidates. when we have only 1 we only | ||||||||
| 16266 | /// need to remove ReferenceToConsteval in the immediate invocation. | ||||||||
| 16267 | if (Rec.ImmediateInvocationCandidates.size() > 1) { | ||||||||
| 16268 | |||||||||
| 16269 | /// Prevent sema calls during the tree transform from adding pointers that | ||||||||
| 16270 | /// are already in the sets. | ||||||||
| 16271 | llvm::SaveAndRestore<bool> DisableIITracking( | ||||||||
| 16272 | SemaRef.RebuildingImmediateInvocation, true); | ||||||||
| 16273 | |||||||||
| 16274 | /// Prevent diagnostic during tree transfrom as they are duplicates | ||||||||
| 16275 | Sema::TentativeAnalysisScope DisableDiag(SemaRef); | ||||||||
| 16276 | |||||||||
| 16277 | for (auto It = Rec.ImmediateInvocationCandidates.rbegin(); | ||||||||
| 16278 | It != Rec.ImmediateInvocationCandidates.rend(); It++) | ||||||||
| 16279 | if (!It->getInt()) | ||||||||
| 16280 | RemoveNestedImmediateInvocation(SemaRef, Rec, It); | ||||||||
| 16281 | } else if (Rec.ImmediateInvocationCandidates.size() == 1 && | ||||||||
| 16282 | Rec.ReferenceToConsteval.size()) { | ||||||||
| 16283 | struct SimpleRemove : RecursiveASTVisitor<SimpleRemove> { | ||||||||
| 16284 | llvm::SmallPtrSetImpl<DeclRefExpr *> &DRSet; | ||||||||
| 16285 | SimpleRemove(llvm::SmallPtrSetImpl<DeclRefExpr *> &S) : DRSet(S) {} | ||||||||
| 16286 | bool VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
| 16287 | DRSet.erase(E); | ||||||||
| 16288 | return DRSet.size(); | ||||||||
| 16289 | } | ||||||||
| 16290 | } Visitor(Rec.ReferenceToConsteval); | ||||||||
| 16291 | Visitor.TraverseStmt( | ||||||||
| 16292 | Rec.ImmediateInvocationCandidates.front().getPointer()->getSubExpr()); | ||||||||
| 16293 | } | ||||||||
| 16294 | for (auto CE : Rec.ImmediateInvocationCandidates) | ||||||||
| 16295 | if (!CE.getInt()) | ||||||||
| 16296 | EvaluateAndDiagnoseImmediateInvocation(SemaRef, CE); | ||||||||
| 16297 | for (auto DR : Rec.ReferenceToConsteval) { | ||||||||
| 16298 | auto *FD = cast<FunctionDecl>(DR->getDecl()); | ||||||||
| 16299 | SemaRef.Diag(DR->getBeginLoc(), diag::err_invalid_consteval_take_address) | ||||||||
| 16300 | << FD; | ||||||||
| 16301 | SemaRef.Diag(FD->getLocation(), diag::note_declared_at); | ||||||||
| 16302 | } | ||||||||
| 16303 | } | ||||||||
| 16304 | |||||||||
| 16305 | void Sema::PopExpressionEvaluationContext() { | ||||||||
| 16306 | ExpressionEvaluationContextRecord& Rec = ExprEvalContexts.back(); | ||||||||
| 16307 | unsigned NumTypos = Rec.NumTypos; | ||||||||
| 16308 | |||||||||
| 16309 | if (!Rec.Lambdas.empty()) { | ||||||||
| 16310 | using ExpressionKind = ExpressionEvaluationContextRecord::ExpressionKind; | ||||||||
| 16311 | if (Rec.ExprContext == ExpressionKind::EK_TemplateArgument || Rec.isUnevaluated() || | ||||||||
| 16312 | (Rec.isConstantEvaluated() && !getLangOpts().CPlusPlus17)) { | ||||||||
| 16313 | unsigned D; | ||||||||
| 16314 | if (Rec.isUnevaluated()) { | ||||||||
| 16315 | // C++11 [expr.prim.lambda]p2: | ||||||||
| 16316 | // A lambda-expression shall not appear in an unevaluated operand | ||||||||
| 16317 | // (Clause 5). | ||||||||
| 16318 | D = diag::err_lambda_unevaluated_operand; | ||||||||
| 16319 | } else if (Rec.isConstantEvaluated() && !getLangOpts().CPlusPlus17) { | ||||||||
| 16320 | // C++1y [expr.const]p2: | ||||||||
| 16321 | // A conditional-expression e is a core constant expression unless the | ||||||||
| 16322 | // evaluation of e, following the rules of the abstract machine, would | ||||||||
| 16323 | // evaluate [...] a lambda-expression. | ||||||||
| 16324 | D = diag::err_lambda_in_constant_expression; | ||||||||
| 16325 | } else if (Rec.ExprContext == ExpressionKind::EK_TemplateArgument) { | ||||||||
| 16326 | // C++17 [expr.prim.lamda]p2: | ||||||||
| 16327 | // A lambda-expression shall not appear [...] in a template-argument. | ||||||||
| 16328 | D = diag::err_lambda_in_invalid_context; | ||||||||
| 16329 | } else | ||||||||
| 16330 | llvm_unreachable("Couldn't infer lambda error message.")::llvm::llvm_unreachable_internal("Couldn't infer lambda error message." , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16330); | ||||||||
| 16331 | |||||||||
| 16332 | for (const auto *L : Rec.Lambdas) | ||||||||
| 16333 | Diag(L->getBeginLoc(), D); | ||||||||
| 16334 | } | ||||||||
| 16335 | } | ||||||||
| 16336 | |||||||||
| 16337 | WarnOnPendingNoDerefs(Rec); | ||||||||
| 16338 | HandleImmediateInvocations(*this, Rec); | ||||||||
| 16339 | |||||||||
| 16340 | // Warn on any volatile-qualified simple-assignments that are not discarded- | ||||||||
| 16341 | // value expressions nor unevaluated operands (those cases get removed from | ||||||||
| 16342 | // this list by CheckUnusedVolatileAssignment). | ||||||||
| 16343 | for (auto *BO : Rec.VolatileAssignmentLHSs) | ||||||||
| 16344 | Diag(BO->getBeginLoc(), diag::warn_deprecated_simple_assign_volatile) | ||||||||
| 16345 | << BO->getType(); | ||||||||
| 16346 | |||||||||
| 16347 | // When are coming out of an unevaluated context, clear out any | ||||||||
| 16348 | // temporaries that we may have created as part of the evaluation of | ||||||||
| 16349 | // the expression in that context: they aren't relevant because they | ||||||||
| 16350 | // will never be constructed. | ||||||||
| 16351 | if (Rec.isUnevaluated() || Rec.isConstantEvaluated()) { | ||||||||
| 16352 | ExprCleanupObjects.erase(ExprCleanupObjects.begin() + Rec.NumCleanupObjects, | ||||||||
| 16353 | ExprCleanupObjects.end()); | ||||||||
| 16354 | Cleanup = Rec.ParentCleanup; | ||||||||
| 16355 | CleanupVarDeclMarking(); | ||||||||
| 16356 | std::swap(MaybeODRUseExprs, Rec.SavedMaybeODRUseExprs); | ||||||||
| 16357 | // Otherwise, merge the contexts together. | ||||||||
| 16358 | } else { | ||||||||
| 16359 | Cleanup.mergeFrom(Rec.ParentCleanup); | ||||||||
| 16360 | MaybeODRUseExprs.insert(Rec.SavedMaybeODRUseExprs.begin(), | ||||||||
| 16361 | Rec.SavedMaybeODRUseExprs.end()); | ||||||||
| 16362 | } | ||||||||
| 16363 | |||||||||
| 16364 | // Pop the current expression evaluation context off the stack. | ||||||||
| 16365 | ExprEvalContexts.pop_back(); | ||||||||
| 16366 | |||||||||
| 16367 | // The global expression evaluation context record is never popped. | ||||||||
| 16368 | ExprEvalContexts.back().NumTypos += NumTypos; | ||||||||
| 16369 | } | ||||||||
| 16370 | |||||||||
| 16371 | void Sema::DiscardCleanupsInEvaluationContext() { | ||||||||
| 16372 | ExprCleanupObjects.erase( | ||||||||
| 16373 | ExprCleanupObjects.begin() + ExprEvalContexts.back().NumCleanupObjects, | ||||||||
| 16374 | ExprCleanupObjects.end()); | ||||||||
| 16375 | Cleanup.reset(); | ||||||||
| 16376 | MaybeODRUseExprs.clear(); | ||||||||
| 16377 | } | ||||||||
| 16378 | |||||||||
| 16379 | ExprResult Sema::HandleExprEvaluationContextForTypeof(Expr *E) { | ||||||||
| 16380 | ExprResult Result = CheckPlaceholderExpr(E); | ||||||||
| 16381 | if (Result.isInvalid()) | ||||||||
| 16382 | return ExprError(); | ||||||||
| 16383 | E = Result.get(); | ||||||||
| 16384 | if (!E->getType()->isVariablyModifiedType()) | ||||||||
| 16385 | return E; | ||||||||
| 16386 | return TransformToPotentiallyEvaluated(E); | ||||||||
| 16387 | } | ||||||||
| 16388 | |||||||||
| 16389 | /// Are we in a context that is potentially constant evaluated per C++20 | ||||||||
| 16390 | /// [expr.const]p12? | ||||||||
| 16391 | static bool isPotentiallyConstantEvaluatedContext(Sema &SemaRef) { | ||||||||
| 16392 | /// C++2a [expr.const]p12: | ||||||||
| 16393 | // An expression or conversion is potentially constant evaluated if it is | ||||||||
| 16394 | switch (SemaRef.ExprEvalContexts.back().Context) { | ||||||||
| 16395 | case Sema::ExpressionEvaluationContext::ConstantEvaluated: | ||||||||
| 16396 | // -- a manifestly constant-evaluated expression, | ||||||||
| 16397 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluated: | ||||||||
| 16398 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||||||
| 16399 | case Sema::ExpressionEvaluationContext::DiscardedStatement: | ||||||||
| 16400 | // -- a potentially-evaluated expression, | ||||||||
| 16401 | case Sema::ExpressionEvaluationContext::UnevaluatedList: | ||||||||
| 16402 | // -- an immediate subexpression of a braced-init-list, | ||||||||
| 16403 | |||||||||
| 16404 | // -- [FIXME] an expression of the form & cast-expression that occurs | ||||||||
| 16405 | // within a templated entity | ||||||||
| 16406 | // -- a subexpression of one of the above that is not a subexpression of | ||||||||
| 16407 | // a nested unevaluated operand. | ||||||||
| 16408 | return true; | ||||||||
| 16409 | |||||||||
| 16410 | case Sema::ExpressionEvaluationContext::Unevaluated: | ||||||||
| 16411 | case Sema::ExpressionEvaluationContext::UnevaluatedAbstract: | ||||||||
| 16412 | // Expressions in this context are never evaluated. | ||||||||
| 16413 | return false; | ||||||||
| 16414 | } | ||||||||
| 16415 | llvm_unreachable("Invalid context")::llvm::llvm_unreachable_internal("Invalid context", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16415); | ||||||||
| 16416 | } | ||||||||
| 16417 | |||||||||
| 16418 | /// Return true if this function has a calling convention that requires mangling | ||||||||
| 16419 | /// in the size of the parameter pack. | ||||||||
| 16420 | static bool funcHasParameterSizeMangling(Sema &S, FunctionDecl *FD) { | ||||||||
| 16421 | // These manglings don't do anything on non-Windows or non-x86 platforms, so | ||||||||
| 16422 | // we don't need parameter type sizes. | ||||||||
| 16423 | const llvm::Triple &TT = S.Context.getTargetInfo().getTriple(); | ||||||||
| 16424 | if (!TT.isOSWindows() || !TT.isX86()) | ||||||||
| 16425 | return false; | ||||||||
| 16426 | |||||||||
| 16427 | // If this is C++ and this isn't an extern "C" function, parameters do not | ||||||||
| 16428 | // need to be complete. In this case, C++ mangling will apply, which doesn't | ||||||||
| 16429 | // use the size of the parameters. | ||||||||
| 16430 | if (S.getLangOpts().CPlusPlus && !FD->isExternC()) | ||||||||
| 16431 | return false; | ||||||||
| 16432 | |||||||||
| 16433 | // Stdcall, fastcall, and vectorcall need this special treatment. | ||||||||
| 16434 | CallingConv CC = FD->getType()->castAs<FunctionType>()->getCallConv(); | ||||||||
| 16435 | switch (CC) { | ||||||||
| 16436 | case CC_X86StdCall: | ||||||||
| 16437 | case CC_X86FastCall: | ||||||||
| 16438 | case CC_X86VectorCall: | ||||||||
| 16439 | return true; | ||||||||
| 16440 | default: | ||||||||
| 16441 | break; | ||||||||
| 16442 | } | ||||||||
| 16443 | return false; | ||||||||
| 16444 | } | ||||||||
| 16445 | |||||||||
| 16446 | /// Require that all of the parameter types of function be complete. Normally, | ||||||||
| 16447 | /// parameter types are only required to be complete when a function is called | ||||||||
| 16448 | /// or defined, but to mangle functions with certain calling conventions, the | ||||||||
| 16449 | /// mangler needs to know the size of the parameter list. In this situation, | ||||||||
| 16450 | /// MSVC doesn't emit an error or instantiate templates. Instead, MSVC mangles | ||||||||
| 16451 | /// the function as _foo@0, i.e. zero bytes of parameters, which will usually | ||||||||
| 16452 | /// result in a linker error. Clang doesn't implement this behavior, and instead | ||||||||
| 16453 | /// attempts to error at compile time. | ||||||||
| 16454 | static void CheckCompleteParameterTypesForMangler(Sema &S, FunctionDecl *FD, | ||||||||
| 16455 | SourceLocation Loc) { | ||||||||
| 16456 | class ParamIncompleteTypeDiagnoser : public Sema::TypeDiagnoser { | ||||||||
| 16457 | FunctionDecl *FD; | ||||||||
| 16458 | ParmVarDecl *Param; | ||||||||
| 16459 | |||||||||
| 16460 | public: | ||||||||
| 16461 | ParamIncompleteTypeDiagnoser(FunctionDecl *FD, ParmVarDecl *Param) | ||||||||
| 16462 | : FD(FD), Param(Param) {} | ||||||||
| 16463 | |||||||||
| 16464 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
| 16465 | CallingConv CC = FD->getType()->castAs<FunctionType>()->getCallConv(); | ||||||||
| 16466 | StringRef CCName; | ||||||||
| 16467 | switch (CC) { | ||||||||
| 16468 | case CC_X86StdCall: | ||||||||
| 16469 | CCName = "stdcall"; | ||||||||
| 16470 | break; | ||||||||
| 16471 | case CC_X86FastCall: | ||||||||
| 16472 | CCName = "fastcall"; | ||||||||
| 16473 | break; | ||||||||
| 16474 | case CC_X86VectorCall: | ||||||||
| 16475 | CCName = "vectorcall"; | ||||||||
| 16476 | break; | ||||||||
| 16477 | default: | ||||||||
| 16478 | llvm_unreachable("CC does not need mangling")::llvm::llvm_unreachable_internal("CC does not need mangling" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16478); | ||||||||
| 16479 | } | ||||||||
| 16480 | |||||||||
| 16481 | S.Diag(Loc, diag::err_cconv_incomplete_param_type) | ||||||||
| 16482 | << Param->getDeclName() << FD->getDeclName() << CCName; | ||||||||
| 16483 | } | ||||||||
| 16484 | }; | ||||||||
| 16485 | |||||||||
| 16486 | for (ParmVarDecl *Param : FD->parameters()) { | ||||||||
| 16487 | ParamIncompleteTypeDiagnoser Diagnoser(FD, Param); | ||||||||
| 16488 | S.RequireCompleteType(Loc, Param->getType(), Diagnoser); | ||||||||
| 16489 | } | ||||||||
| 16490 | } | ||||||||
| 16491 | |||||||||
| 16492 | namespace { | ||||||||
| 16493 | enum class OdrUseContext { | ||||||||
| 16494 | /// Declarations in this context are not odr-used. | ||||||||
| 16495 | None, | ||||||||
| 16496 | /// Declarations in this context are formally odr-used, but this is a | ||||||||
| 16497 | /// dependent context. | ||||||||
| 16498 | Dependent, | ||||||||
| 16499 | /// Declarations in this context are odr-used but not actually used (yet). | ||||||||
| 16500 | FormallyOdrUsed, | ||||||||
| 16501 | /// Declarations in this context are used. | ||||||||
| 16502 | Used | ||||||||
| 16503 | }; | ||||||||
| 16504 | } | ||||||||
| 16505 | |||||||||
| 16506 | /// Are we within a context in which references to resolved functions or to | ||||||||
| 16507 | /// variables result in odr-use? | ||||||||
| 16508 | static OdrUseContext isOdrUseContext(Sema &SemaRef) { | ||||||||
| 16509 | OdrUseContext Result; | ||||||||
| 16510 | |||||||||
| 16511 | switch (SemaRef.ExprEvalContexts.back().Context) { | ||||||||
| 16512 | case Sema::ExpressionEvaluationContext::Unevaluated: | ||||||||
| 16513 | case Sema::ExpressionEvaluationContext::UnevaluatedList: | ||||||||
| 16514 | case Sema::ExpressionEvaluationContext::UnevaluatedAbstract: | ||||||||
| 16515 | return OdrUseContext::None; | ||||||||
| 16516 | |||||||||
| 16517 | case Sema::ExpressionEvaluationContext::ConstantEvaluated: | ||||||||
| 16518 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluated: | ||||||||
| 16519 | Result = OdrUseContext::Used; | ||||||||
| 16520 | break; | ||||||||
| 16521 | |||||||||
| 16522 | case Sema::ExpressionEvaluationContext::DiscardedStatement: | ||||||||
| 16523 | Result = OdrUseContext::FormallyOdrUsed; | ||||||||
| 16524 | break; | ||||||||
| 16525 | |||||||||
| 16526 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||||||
| 16527 | // A default argument formally results in odr-use, but doesn't actually | ||||||||
| 16528 | // result in a use in any real sense until it itself is used. | ||||||||
| 16529 | Result = OdrUseContext::FormallyOdrUsed; | ||||||||
| 16530 | break; | ||||||||
| 16531 | } | ||||||||
| 16532 | |||||||||
| 16533 | if (SemaRef.CurContext->isDependentContext()) | ||||||||
| 16534 | return OdrUseContext::Dependent; | ||||||||
| 16535 | |||||||||
| 16536 | return Result; | ||||||||
| 16537 | } | ||||||||
| 16538 | |||||||||
| 16539 | static bool isImplicitlyDefinableConstexprFunction(FunctionDecl *Func) { | ||||||||
| 16540 | return Func->isConstexpr() && | ||||||||
| 16541 | (Func->isImplicitlyInstantiable() || !Func->isUserProvided()); | ||||||||
| 16542 | } | ||||||||
| 16543 | |||||||||
| 16544 | /// Mark a function referenced, and check whether it is odr-used | ||||||||
| 16545 | /// (C++ [basic.def.odr]p2, C99 6.9p3) | ||||||||
| 16546 | void Sema::MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func, | ||||||||
| 16547 | bool MightBeOdrUse) { | ||||||||
| 16548 | assert(Func && "No function?")((Func && "No function?") ? static_cast<void> ( 0) : __assert_fail ("Func && \"No function?\"", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 16548, __PRETTY_FUNCTION__)); | ||||||||
| 16549 | |||||||||
| 16550 | Func->setReferenced(); | ||||||||
| 16551 | |||||||||
| 16552 | // Recursive functions aren't really used until they're used from some other | ||||||||
| 16553 | // context. | ||||||||
| 16554 | bool IsRecursiveCall = CurContext == Func; | ||||||||
| 16555 | |||||||||
| 16556 | // C++11 [basic.def.odr]p3: | ||||||||
| 16557 | // A function whose name appears as a potentially-evaluated expression is | ||||||||
| 16558 | // odr-used if it is the unique lookup result or the selected member of a | ||||||||
| 16559 | // set of overloaded functions [...]. | ||||||||
| 16560 | // | ||||||||
| 16561 | // We (incorrectly) mark overload resolution as an unevaluated context, so we | ||||||||
| 16562 | // can just check that here. | ||||||||
| 16563 | OdrUseContext OdrUse = | ||||||||
| 16564 | MightBeOdrUse ? isOdrUseContext(*this) : OdrUseContext::None; | ||||||||
| 16565 | if (IsRecursiveCall && OdrUse == OdrUseContext::Used) | ||||||||
| 16566 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||||||
| 16567 | |||||||||
| 16568 | // Trivial default constructors and destructors are never actually used. | ||||||||
| 16569 | // FIXME: What about other special members? | ||||||||
| 16570 | if (Func->isTrivial() && !Func->hasAttr<DLLExportAttr>() && | ||||||||
| 16571 | OdrUse == OdrUseContext::Used) { | ||||||||
| 16572 | if (auto *Constructor = dyn_cast<CXXConstructorDecl>(Func)) | ||||||||
| 16573 | if (Constructor->isDefaultConstructor()) | ||||||||
| 16574 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||||||
| 16575 | if (isa<CXXDestructorDecl>(Func)) | ||||||||
| 16576 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||||||
| 16577 | } | ||||||||
| 16578 | |||||||||
| 16579 | // C++20 [expr.const]p12: | ||||||||
| 16580 | // A function [...] is needed for constant evaluation if it is [...] a | ||||||||
| 16581 | // constexpr function that is named by an expression that is potentially | ||||||||
| 16582 | // constant evaluated | ||||||||
| 16583 | bool NeededForConstantEvaluation = | ||||||||
| 16584 | isPotentiallyConstantEvaluatedContext(*this) && | ||||||||
| 16585 | isImplicitlyDefinableConstexprFunction(Func); | ||||||||
| 16586 | |||||||||
| 16587 | // Determine whether we require a function definition to exist, per | ||||||||
| 16588 | // C++11 [temp.inst]p3: | ||||||||
| 16589 | // Unless a function template specialization has been explicitly | ||||||||
| 16590 | // instantiated or explicitly specialized, the function template | ||||||||
| 16591 | // specialization is implicitly instantiated when the specialization is | ||||||||
| 16592 | // referenced in a context that requires a function definition to exist. | ||||||||
| 16593 | // C++20 [temp.inst]p7: | ||||||||
| 16594 | // The existence of a definition of a [...] function is considered to | ||||||||
| 16595 | // affect the semantics of the program if the [...] function is needed for | ||||||||
| 16596 | // constant evaluation by an expression | ||||||||
| 16597 | // C++20 [basic.def.odr]p10: | ||||||||
| 16598 | // Every program shall contain exactly one definition of every non-inline | ||||||||
| 16599 | // function or variable that is odr-used in that program outside of a | ||||||||
| 16600 | // discarded statement | ||||||||
| 16601 | // C++20 [special]p1: | ||||||||
| 16602 | // The implementation will implicitly define [defaulted special members] | ||||||||
| 16603 | // if they are odr-used or needed for constant evaluation. | ||||||||
| 16604 | // | ||||||||
| 16605 | // Note that we skip the implicit instantiation of templates that are only | ||||||||
| 16606 | // used in unused default arguments or by recursive calls to themselves. | ||||||||
| 16607 | // This is formally non-conforming, but seems reasonable in practice. | ||||||||
| 16608 | bool NeedDefinition = !IsRecursiveCall && (OdrUse == OdrUseContext::Used || | ||||||||
| 16609 | NeededForConstantEvaluation); | ||||||||
| 16610 | |||||||||
| 16611 | // C++14 [temp.expl.spec]p6: | ||||||||
| 16612 | // If a template [...] is explicitly specialized then that specialization | ||||||||
| 16613 | // shall be declared before the first use of that specialization that would | ||||||||
| 16614 | // cause an implicit instantiation to take place, in every translation unit | ||||||||
| 16615 | // in which such a use occurs | ||||||||
| 16616 | if (NeedDefinition && | ||||||||
| 16617 | (Func->getTemplateSpecializationKind() != TSK_Undeclared || | ||||||||
| 16618 | Func->getMemberSpecializationInfo())) | ||||||||
| 16619 | checkSpecializationVisibility(Loc, Func); | ||||||||
| 16620 | |||||||||
| 16621 | if (getLangOpts().CUDA) | ||||||||
| 16622 | CheckCUDACall(Loc, Func); | ||||||||
| 16623 | |||||||||
| 16624 | if (getLangOpts().SYCLIsDevice) | ||||||||
| 16625 | checkSYCLDeviceFunction(Loc, Func); | ||||||||
| 16626 | |||||||||
| 16627 | // If we need a definition, try to create one. | ||||||||
| 16628 | if (NeedDefinition && !Func->getBody()) { | ||||||||
| 16629 | runWithSufficientStackSpace(Loc, [&] { | ||||||||
| 16630 | if (CXXConstructorDecl *Constructor = | ||||||||
| 16631 | dyn_cast<CXXConstructorDecl>(Func)) { | ||||||||
| 16632 | Constructor = cast<CXXConstructorDecl>(Constructor->getFirstDecl()); | ||||||||
| 16633 | if (Constructor->isDefaulted() && !Constructor->isDeleted()) { | ||||||||
| 16634 | if (Constructor->isDefaultConstructor()) { | ||||||||
| 16635 | if (Constructor->isTrivial() && | ||||||||
| 16636 | !Constructor->hasAttr<DLLExportAttr>()) | ||||||||
| 16637 | return; | ||||||||
| 16638 | DefineImplicitDefaultConstructor(Loc, Constructor); | ||||||||
| 16639 | } else if (Constructor->isCopyConstructor()) { | ||||||||
| 16640 | DefineImplicitCopyConstructor(Loc, Constructor); | ||||||||
| 16641 | } else if (Constructor->isMoveConstructor()) { | ||||||||
| 16642 | DefineImplicitMoveConstructor(Loc, Constructor); | ||||||||
| 16643 | } | ||||||||
| 16644 | } else if (Constructor->getInheritedConstructor()) { | ||||||||
| 16645 | DefineInheritingConstructor(Loc, Constructor); | ||||||||
| 16646 | } | ||||||||
| 16647 | } else if (CXXDestructorDecl *Destructor = | ||||||||
| 16648 | dyn_cast<CXXDestructorDecl>(Func)) { | ||||||||
| 16649 | Destructor = cast<CXXDestructorDecl>(Destructor->getFirstDecl()); | ||||||||
| 16650 | if (Destructor->isDefaulted() && !Destructor->isDeleted()) { | ||||||||
| 16651 | if (Destructor->isTrivial() && !Destructor->hasAttr<DLLExportAttr>()) | ||||||||
| 16652 | return; | ||||||||
| 16653 | DefineImplicitDestructor(Loc, Destructor); | ||||||||
| 16654 | } | ||||||||
| 16655 | if (Destructor->isVirtual() && getLangOpts().AppleKext) | ||||||||
| 16656 | MarkVTableUsed(Loc, Destructor->getParent()); | ||||||||
| 16657 | } else if (CXXMethodDecl *MethodDecl = dyn_cast<CXXMethodDecl>(Func)) { | ||||||||
| 16658 | if (MethodDecl->isOverloadedOperator() && | ||||||||
| 16659 | MethodDecl->getOverloadedOperator() == OO_Equal) { | ||||||||
| 16660 | MethodDecl = cast<CXXMethodDecl>(MethodDecl->getFirstDecl()); | ||||||||
| 16661 | if (MethodDecl->isDefaulted() && !MethodDecl->isDeleted()) { | ||||||||
| 16662 | if (MethodDecl->isCopyAssignmentOperator()) | ||||||||
| 16663 | DefineImplicitCopyAssignment(Loc, MethodDecl); | ||||||||
| 16664 | else if (MethodDecl->isMoveAssignmentOperator()) | ||||||||
| 16665 | DefineImplicitMoveAssignment(Loc, MethodDecl); | ||||||||
| 16666 | } | ||||||||
| 16667 | } else if (isa<CXXConversionDecl>(MethodDecl) && | ||||||||
| 16668 | MethodDecl->getParent()->isLambda()) { | ||||||||
| 16669 | CXXConversionDecl *Conversion = | ||||||||
| 16670 | cast<CXXConversionDecl>(MethodDecl->getFirstDecl()); | ||||||||
| 16671 | if (Conversion->isLambdaToBlockPointerConversion()) | ||||||||
| 16672 | DefineImplicitLambdaToBlockPointerConversion(Loc, Conversion); | ||||||||
| 16673 | else | ||||||||
| 16674 | DefineImplicitLambdaToFunctionPointerConversion(Loc, Conversion); | ||||||||
| 16675 | } else if (MethodDecl->isVirtual() && getLangOpts().AppleKext) | ||||||||
| 16676 | MarkVTableUsed(Loc, MethodDecl->getParent()); | ||||||||
| 16677 | } | ||||||||
| 16678 | |||||||||
| 16679 | if (Func->isDefaulted() && !Func->isDeleted()) { | ||||||||
| 16680 | DefaultedComparisonKind DCK = getDefaultedComparisonKind(Func); | ||||||||
| 16681 | if (DCK != DefaultedComparisonKind::None) | ||||||||
| 16682 | DefineDefaultedComparison(Loc, Func, DCK); | ||||||||
| 16683 | } | ||||||||
| 16684 | |||||||||
| 16685 | // Implicit instantiation of function templates and member functions of | ||||||||
| 16686 | // class templates. | ||||||||
| 16687 | if (Func->isImplicitlyInstantiable()) { | ||||||||
| 16688 | TemplateSpecializationKind TSK = | ||||||||
| 16689 | Func->getTemplateSpecializationKindForInstantiation(); | ||||||||
| 16690 | SourceLocation PointOfInstantiation = Func->getPointOfInstantiation(); | ||||||||
| 16691 | bool FirstInstantiation = PointOfInstantiation.isInvalid(); | ||||||||
| 16692 | if (FirstInstantiation) { | ||||||||
| 16693 | PointOfInstantiation = Loc; | ||||||||
| 16694 | Func->setTemplateSpecializationKind(TSK, PointOfInstantiation); | ||||||||
| 16695 | } else if (TSK != TSK_ImplicitInstantiation) { | ||||||||
| 16696 | // Use the point of use as the point of instantiation, instead of the | ||||||||
| 16697 | // point of explicit instantiation (which we track as the actual point | ||||||||
| 16698 | // of instantiation). This gives better backtraces in diagnostics. | ||||||||
| 16699 | PointOfInstantiation = Loc; | ||||||||
| 16700 | } | ||||||||
| 16701 | |||||||||
| 16702 | if (FirstInstantiation || TSK != TSK_ImplicitInstantiation || | ||||||||
| 16703 | Func->isConstexpr()) { | ||||||||
| 16704 | if (isa<CXXRecordDecl>(Func->getDeclContext()) && | ||||||||
| 16705 | cast<CXXRecordDecl>(Func->getDeclContext())->isLocalClass() && | ||||||||
| 16706 | CodeSynthesisContexts.size()) | ||||||||
| 16707 | PendingLocalImplicitInstantiations.push_back( | ||||||||
| 16708 | std::make_pair(Func, PointOfInstantiation)); | ||||||||
| 16709 | else if (Func->isConstexpr()) | ||||||||
| 16710 | // Do not defer instantiations of constexpr functions, to avoid the | ||||||||
| 16711 | // expression evaluator needing to call back into Sema if it sees a | ||||||||
| 16712 | // call to such a function. | ||||||||
| 16713 | InstantiateFunctionDefinition(PointOfInstantiation, Func); | ||||||||
| 16714 | else { | ||||||||
| 16715 | Func->setInstantiationIsPending(true); | ||||||||
| 16716 | PendingInstantiations.push_back( | ||||||||
| 16717 | std::make_pair(Func, PointOfInstantiation)); | ||||||||
| 16718 | // Notify the consumer that a function was implicitly instantiated. | ||||||||
| 16719 | Consumer.HandleCXXImplicitFunctionInstantiation(Func); | ||||||||
| 16720 | } | ||||||||
| 16721 | } | ||||||||
| 16722 | } else { | ||||||||
| 16723 | // Walk redefinitions, as some of them may be instantiable. | ||||||||
| 16724 | for (auto i : Func->redecls()) { | ||||||||
| 16725 | if (!i->isUsed(false) && i->isImplicitlyInstantiable()) | ||||||||
| 16726 | MarkFunctionReferenced(Loc, i, MightBeOdrUse); | ||||||||
| 16727 | } | ||||||||
| 16728 | } | ||||||||
| 16729 | }); | ||||||||
| 16730 | } | ||||||||
| 16731 | |||||||||
| 16732 | // C++14 [except.spec]p17: | ||||||||
| 16733 | // An exception-specification is considered to be needed when: | ||||||||
| 16734 | // - the function is odr-used or, if it appears in an unevaluated operand, | ||||||||
| 16735 | // would be odr-used if the expression were potentially-evaluated; | ||||||||
| 16736 | // | ||||||||
| 16737 | // Note, we do this even if MightBeOdrUse is false. That indicates that the | ||||||||
| 16738 | // function is a pure virtual function we're calling, and in that case the | ||||||||
| 16739 | // function was selected by overload resolution and we need to resolve its | ||||||||
| 16740 | // exception specification for a different reason. | ||||||||
| 16741 | const FunctionProtoType *FPT = Func->getType()->getAs<FunctionProtoType>(); | ||||||||
| 16742 | if (FPT && isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) | ||||||||
| 16743 | ResolveExceptionSpec(Loc, FPT); | ||||||||
| 16744 | |||||||||
| 16745 | // If this is the first "real" use, act on that. | ||||||||
| 16746 | if (OdrUse == OdrUseContext::Used && !Func->isUsed(/*CheckUsedAttr=*/false)) { | ||||||||
| 16747 | // Keep track of used but undefined functions. | ||||||||
| 16748 | if (!Func->isDefined()) { | ||||||||
| 16749 | if (mightHaveNonExternalLinkage(Func)) | ||||||||
| 16750 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||||||
| 16751 | else if (Func->getMostRecentDecl()->isInlined() && | ||||||||
| 16752 | !LangOpts.GNUInline && | ||||||||
| 16753 | !Func->getMostRecentDecl()->hasAttr<GNUInlineAttr>()) | ||||||||
| 16754 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||||||
| 16755 | else if (isExternalWithNoLinkageType(Func)) | ||||||||
| 16756 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||||||
| 16757 | } | ||||||||
| 16758 | |||||||||
| 16759 | // Some x86 Windows calling conventions mangle the size of the parameter | ||||||||
| 16760 | // pack into the name. Computing the size of the parameters requires the | ||||||||
| 16761 | // parameter types to be complete. Check that now. | ||||||||
| 16762 | if (funcHasParameterSizeMangling(*this, Func)) | ||||||||
| 16763 | CheckCompleteParameterTypesForMangler(*this, Func, Loc); | ||||||||
| 16764 | |||||||||
| 16765 | // In the MS C++ ABI, the compiler emits destructor variants where they are | ||||||||
| 16766 | // used. If the destructor is used here but defined elsewhere, mark the | ||||||||
| 16767 | // virtual base destructors referenced. If those virtual base destructors | ||||||||
| 16768 | // are inline, this will ensure they are defined when emitting the complete | ||||||||
| 16769 | // destructor variant. This checking may be redundant if the destructor is | ||||||||
| 16770 | // provided later in this TU. | ||||||||
| 16771 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) { | ||||||||
| 16772 | if (auto *Dtor = dyn_cast<CXXDestructorDecl>(Func)) { | ||||||||
| 16773 | CXXRecordDecl *Parent = Dtor->getParent(); | ||||||||
| 16774 | if (Parent->getNumVBases() > 0 && !Dtor->getBody()) | ||||||||
| 16775 | CheckCompleteDestructorVariant(Loc, Dtor); | ||||||||
| 16776 | } | ||||||||
| 16777 | } | ||||||||
| 16778 | |||||||||
| 16779 | Func->markUsed(Context); | ||||||||
| 16780 | } | ||||||||
| 16781 | } | ||||||||
| 16782 | |||||||||
| 16783 | /// Directly mark a variable odr-used. Given a choice, prefer to use | ||||||||
| 16784 | /// MarkVariableReferenced since it does additional checks and then | ||||||||
| 16785 | /// calls MarkVarDeclODRUsed. | ||||||||
| 16786 | /// If the variable must be captured: | ||||||||
| 16787 | /// - if FunctionScopeIndexToStopAt is null, capture it in the CurContext | ||||||||
| 16788 | /// - else capture it in the DeclContext that maps to the | ||||||||
| 16789 | /// *FunctionScopeIndexToStopAt on the FunctionScopeInfo stack. | ||||||||
| 16790 | static void | ||||||||
| 16791 | MarkVarDeclODRUsed(VarDecl *Var, SourceLocation Loc, Sema &SemaRef, | ||||||||
| 16792 | const unsigned *const FunctionScopeIndexToStopAt = nullptr) { | ||||||||
| 16793 | // Keep track of used but undefined variables. | ||||||||
| 16794 | // FIXME: We shouldn't suppress this warning for static data members. | ||||||||
| 16795 | if (Var->hasDefinition(SemaRef.Context) == VarDecl::DeclarationOnly && | ||||||||
| 16796 | (!Var->isExternallyVisible() || Var->isInline() || | ||||||||
| 16797 | SemaRef.isExternalWithNoLinkageType(Var)) && | ||||||||
| 16798 | !(Var->isStaticDataMember() && Var->hasInit())) { | ||||||||
| 16799 | SourceLocation &old = SemaRef.UndefinedButUsed[Var->getCanonicalDecl()]; | ||||||||
| 16800 | if (old.isInvalid()) | ||||||||
| 16801 | old = Loc; | ||||||||
| 16802 | } | ||||||||
| 16803 | QualType CaptureType, DeclRefType; | ||||||||
| 16804 | if (SemaRef.LangOpts.OpenMP) | ||||||||
| 16805 | SemaRef.tryCaptureOpenMPLambdas(Var); | ||||||||
| 16806 | SemaRef.tryCaptureVariable(Var, Loc, Sema::TryCapture_Implicit, | ||||||||
| 16807 | /*EllipsisLoc*/ SourceLocation(), | ||||||||
| 16808 | /*BuildAndDiagnose*/ true, | ||||||||
| 16809 | CaptureType, DeclRefType, | ||||||||
| 16810 | FunctionScopeIndexToStopAt); | ||||||||
| 16811 | |||||||||
| 16812 | Var->markUsed(SemaRef.Context); | ||||||||
| 16813 | } | ||||||||
| 16814 | |||||||||
| 16815 | void Sema::MarkCaptureUsedInEnclosingContext(VarDecl *Capture, | ||||||||
| 16816 | SourceLocation Loc, | ||||||||
| 16817 | unsigned CapturingScopeIndex) { | ||||||||
| 16818 | MarkVarDeclODRUsed(Capture, Loc, *this, &CapturingScopeIndex); | ||||||||
| 16819 | } | ||||||||
| 16820 | |||||||||
| 16821 | static void | ||||||||
| 16822 | diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, | ||||||||
| 16823 | ValueDecl *var, DeclContext *DC) { | ||||||||
| 16824 | DeclContext *VarDC = var->getDeclContext(); | ||||||||
| 16825 | |||||||||
| 16826 | // If the parameter still belongs to the translation unit, then | ||||||||
| 16827 | // we're actually just using one parameter in the declaration of | ||||||||
| 16828 | // the next. | ||||||||
| 16829 | if (isa<ParmVarDecl>(var) && | ||||||||
| 16830 | isa<TranslationUnitDecl>(VarDC)) | ||||||||
| 16831 | return; | ||||||||
| 16832 | |||||||||
| 16833 | // For C code, don't diagnose about capture if we're not actually in code | ||||||||
| 16834 | // right now; it's impossible to write a non-constant expression outside of | ||||||||
| 16835 | // function context, so we'll get other (more useful) diagnostics later. | ||||||||
| 16836 | // | ||||||||
| 16837 | // For C++, things get a bit more nasty... it would be nice to suppress this | ||||||||
| 16838 | // diagnostic for certain cases like using a local variable in an array bound | ||||||||
| 16839 | // for a member of a local class, but the correct predicate is not obvious. | ||||||||
| 16840 | if (!S.getLangOpts().CPlusPlus && !S.CurContext->isFunctionOrMethod()) | ||||||||
| 16841 | return; | ||||||||
| 16842 | |||||||||
| 16843 | unsigned ValueKind = isa<BindingDecl>(var) ? 1 : 0; | ||||||||
| 16844 | unsigned ContextKind = 3; // unknown | ||||||||
| 16845 | if (isa<CXXMethodDecl>(VarDC) && | ||||||||
| 16846 | cast<CXXRecordDecl>(VarDC->getParent())->isLambda()) { | ||||||||
| 16847 | ContextKind = 2; | ||||||||
| 16848 | } else if (isa<FunctionDecl>(VarDC)) { | ||||||||
| 16849 | ContextKind = 0; | ||||||||
| 16850 | } else if (isa<BlockDecl>(VarDC)) { | ||||||||
| 16851 | ContextKind = 1; | ||||||||
| 16852 | } | ||||||||
| 16853 | |||||||||
| 16854 | S.Diag(loc, diag::err_reference_to_local_in_enclosing_context) | ||||||||
| 16855 | << var << ValueKind << ContextKind << VarDC; | ||||||||
| 16856 | S.Diag(var->getLocation(), diag::note_entity_declared_at) | ||||||||
| 16857 | << var; | ||||||||
| 16858 | |||||||||
| 16859 | // FIXME: Add additional diagnostic info about class etc. which prevents | ||||||||
| 16860 | // capture. | ||||||||
| 16861 | } | ||||||||
| 16862 | |||||||||
| 16863 | |||||||||
| 16864 | static bool isVariableAlreadyCapturedInScopeInfo(CapturingScopeInfo *CSI, VarDecl *Var, | ||||||||
| 16865 | bool &SubCapturesAreNested, | ||||||||
| 16866 | QualType &CaptureType, | ||||||||
| 16867 | QualType &DeclRefType) { | ||||||||
| 16868 | // Check whether we've already captured it. | ||||||||
| 16869 | if (CSI->CaptureMap.count(Var)) { | ||||||||
| 16870 | // If we found a capture, any subcaptures are nested. | ||||||||
| 16871 | SubCapturesAreNested = true; | ||||||||
| 16872 | |||||||||
| 16873 | // Retrieve the capture type for this variable. | ||||||||
| 16874 | CaptureType = CSI->getCapture(Var).getCaptureType(); | ||||||||
| 16875 | |||||||||
| 16876 | // Compute the type of an expression that refers to this variable. | ||||||||
| 16877 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
| 16878 | |||||||||
| 16879 | // Similarly to mutable captures in lambda, all the OpenMP captures by copy | ||||||||
| 16880 | // are mutable in the sense that user can change their value - they are | ||||||||
| 16881 | // private instances of the captured declarations. | ||||||||
| 16882 | const Capture &Cap = CSI->getCapture(Var); | ||||||||
| 16883 | if (Cap.isCopyCapture() && | ||||||||
| 16884 | !(isa<LambdaScopeInfo>(CSI) && cast<LambdaScopeInfo>(CSI)->Mutable) && | ||||||||
| 16885 | !(isa<CapturedRegionScopeInfo>(CSI) && | ||||||||
| 16886 | cast<CapturedRegionScopeInfo>(CSI)->CapRegionKind == CR_OpenMP)) | ||||||||
| 16887 | DeclRefType.addConst(); | ||||||||
| 16888 | return true; | ||||||||
| 16889 | } | ||||||||
| 16890 | return false; | ||||||||
| 16891 | } | ||||||||
| 16892 | |||||||||
| 16893 | // Only block literals, captured statements, and lambda expressions can | ||||||||
| 16894 | // capture; other scopes don't work. | ||||||||
| 16895 | static DeclContext *getParentOfCapturingContextOrNull(DeclContext *DC, VarDecl *Var, | ||||||||
| 16896 | SourceLocation Loc, | ||||||||
| 16897 | const bool Diagnose, Sema &S) { | ||||||||
| 16898 | if (isa<BlockDecl>(DC) || isa<CapturedDecl>(DC) || isLambdaCallOperator(DC)) | ||||||||
| 16899 | return getLambdaAwareParentOfDeclContext(DC); | ||||||||
| 16900 | else if (Var->hasLocalStorage()) { | ||||||||
| 16901 | if (Diagnose) | ||||||||
| 16902 | diagnoseUncapturableValueReference(S, Loc, Var, DC); | ||||||||
| 16903 | } | ||||||||
| 16904 | return nullptr; | ||||||||
| 16905 | } | ||||||||
| 16906 | |||||||||
| 16907 | // Certain capturing entities (lambdas, blocks etc.) are not allowed to capture | ||||||||
| 16908 | // certain types of variables (unnamed, variably modified types etc.) | ||||||||
| 16909 | // so check for eligibility. | ||||||||
| 16910 | static bool isVariableCapturable(CapturingScopeInfo *CSI, VarDecl *Var, | ||||||||
| 16911 | SourceLocation Loc, | ||||||||
| 16912 | const bool Diagnose, Sema &S) { | ||||||||
| 16913 | |||||||||
| 16914 | bool IsBlock = isa<BlockScopeInfo>(CSI); | ||||||||
| 16915 | bool IsLambda = isa<LambdaScopeInfo>(CSI); | ||||||||
| 16916 | |||||||||
| 16917 | // Lambdas are not allowed to capture unnamed variables | ||||||||
| 16918 | // (e.g. anonymous unions). | ||||||||
| 16919 | // FIXME: The C++11 rule don't actually state this explicitly, but I'm | ||||||||
| 16920 | // assuming that's the intent. | ||||||||
| 16921 | if (IsLambda && !Var->getDeclName()) { | ||||||||
| 16922 | if (Diagnose) { | ||||||||
| 16923 | S.Diag(Loc, diag::err_lambda_capture_anonymous_var); | ||||||||
| 16924 | S.Diag(Var->getLocation(), diag::note_declared_at); | ||||||||
| 16925 | } | ||||||||
| 16926 | return false; | ||||||||
| 16927 | } | ||||||||
| 16928 | |||||||||
| 16929 | // Prohibit variably-modified types in blocks; they're difficult to deal with. | ||||||||
| 16930 | if (Var->getType()->isVariablyModifiedType() && IsBlock) { | ||||||||
| 16931 | if (Diagnose) { | ||||||||
| 16932 | S.Diag(Loc, diag::err_ref_vm_type); | ||||||||
| 16933 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 16934 | } | ||||||||
| 16935 | return false; | ||||||||
| 16936 | } | ||||||||
| 16937 | // Prohibit structs with flexible array members too. | ||||||||
| 16938 | // We cannot capture what is in the tail end of the struct. | ||||||||
| 16939 | if (const RecordType *VTTy = Var->getType()->getAs<RecordType>()) { | ||||||||
| 16940 | if (VTTy->getDecl()->hasFlexibleArrayMember()) { | ||||||||
| 16941 | if (Diagnose) { | ||||||||
| 16942 | if (IsBlock) | ||||||||
| 16943 | S.Diag(Loc, diag::err_ref_flexarray_type); | ||||||||
| 16944 | else | ||||||||
| 16945 | S.Diag(Loc, diag::err_lambda_capture_flexarray_type) << Var; | ||||||||
| 16946 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 16947 | } | ||||||||
| 16948 | return false; | ||||||||
| 16949 | } | ||||||||
| 16950 | } | ||||||||
| 16951 | const bool HasBlocksAttr = Var->hasAttr<BlocksAttr>(); | ||||||||
| 16952 | // Lambdas and captured statements are not allowed to capture __block | ||||||||
| 16953 | // variables; they don't support the expected semantics. | ||||||||
| 16954 | if (HasBlocksAttr && (IsLambda || isa<CapturedRegionScopeInfo>(CSI))) { | ||||||||
| 16955 | if (Diagnose) { | ||||||||
| 16956 | S.Diag(Loc, diag::err_capture_block_variable) << Var << !IsLambda; | ||||||||
| 16957 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 16958 | } | ||||||||
| 16959 | return false; | ||||||||
| 16960 | } | ||||||||
| 16961 | // OpenCL v2.0 s6.12.5: Blocks cannot reference/capture other blocks | ||||||||
| 16962 | if (S.getLangOpts().OpenCL && IsBlock && | ||||||||
| 16963 | Var->getType()->isBlockPointerType()) { | ||||||||
| 16964 | if (Diagnose) | ||||||||
| 16965 | S.Diag(Loc, diag::err_opencl_block_ref_block); | ||||||||
| 16966 | return false; | ||||||||
| 16967 | } | ||||||||
| 16968 | |||||||||
| 16969 | return true; | ||||||||
| 16970 | } | ||||||||
| 16971 | |||||||||
| 16972 | // Returns true if the capture by block was successful. | ||||||||
| 16973 | static bool captureInBlock(BlockScopeInfo *BSI, VarDecl *Var, | ||||||||
| 16974 | SourceLocation Loc, | ||||||||
| 16975 | const bool BuildAndDiagnose, | ||||||||
| 16976 | QualType &CaptureType, | ||||||||
| 16977 | QualType &DeclRefType, | ||||||||
| 16978 | const bool Nested, | ||||||||
| 16979 | Sema &S, bool Invalid) { | ||||||||
| 16980 | bool ByRef = false; | ||||||||
| 16981 | |||||||||
| 16982 | // Blocks are not allowed to capture arrays, excepting OpenCL. | ||||||||
| 16983 | // OpenCL v2.0 s1.12.5 (revision 40): arrays are captured by reference | ||||||||
| 16984 | // (decayed to pointers). | ||||||||
| 16985 | if (!Invalid && !S.getLangOpts().OpenCL && CaptureType->isArrayType()) { | ||||||||
| 16986 | if (BuildAndDiagnose) { | ||||||||
| 16987 | S.Diag(Loc, diag::err_ref_array_type); | ||||||||
| 16988 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 16989 | Invalid = true; | ||||||||
| 16990 | } else { | ||||||||
| 16991 | return false; | ||||||||
| 16992 | } | ||||||||
| 16993 | } | ||||||||
| 16994 | |||||||||
| 16995 | // Forbid the block-capture of autoreleasing variables. | ||||||||
| 16996 | if (!Invalid && | ||||||||
| 16997 | CaptureType.getObjCLifetime() == Qualifiers::OCL_Autoreleasing) { | ||||||||
| 16998 | if (BuildAndDiagnose) { | ||||||||
| 16999 | S.Diag(Loc, diag::err_arc_autoreleasing_capture) | ||||||||
| 17000 | << /*block*/ 0; | ||||||||
| 17001 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 17002 | Invalid = true; | ||||||||
| 17003 | } else { | ||||||||
| 17004 | return false; | ||||||||
| 17005 | } | ||||||||
| 17006 | } | ||||||||
| 17007 | |||||||||
| 17008 | // Warn about implicitly autoreleasing indirect parameters captured by blocks. | ||||||||
| 17009 | if (const auto *PT = CaptureType->getAs<PointerType>()) { | ||||||||
| 17010 | QualType PointeeTy = PT->getPointeeType(); | ||||||||
| 17011 | |||||||||
| 17012 | if (!Invalid && PointeeTy->getAs<ObjCObjectPointerType>() && | ||||||||
| 17013 | PointeeTy.getObjCLifetime() == Qualifiers::OCL_Autoreleasing && | ||||||||
| 17014 | !S.Context.hasDirectOwnershipQualifier(PointeeTy)) { | ||||||||
| 17015 | if (BuildAndDiagnose) { | ||||||||
| 17016 | SourceLocation VarLoc = Var->getLocation(); | ||||||||
| 17017 | S.Diag(Loc, diag::warn_block_capture_autoreleasing); | ||||||||
| 17018 | S.Diag(VarLoc, diag::note_declare_parameter_strong); | ||||||||
| 17019 | } | ||||||||
| 17020 | } | ||||||||
| 17021 | } | ||||||||
| 17022 | |||||||||
| 17023 | const bool HasBlocksAttr = Var->hasAttr<BlocksAttr>(); | ||||||||
| 17024 | if (HasBlocksAttr || CaptureType->isReferenceType() || | ||||||||
| 17025 | (S.getLangOpts().OpenMP && S.isOpenMPCapturedDecl(Var))) { | ||||||||
| 17026 | // Block capture by reference does not change the capture or | ||||||||
| 17027 | // declaration reference types. | ||||||||
| 17028 | ByRef = true; | ||||||||
| 17029 | } else { | ||||||||
| 17030 | // Block capture by copy introduces 'const'. | ||||||||
| 17031 | CaptureType = CaptureType.getNonReferenceType().withConst(); | ||||||||
| 17032 | DeclRefType = CaptureType; | ||||||||
| 17033 | } | ||||||||
| 17034 | |||||||||
| 17035 | // Actually capture the variable. | ||||||||
| 17036 | if (BuildAndDiagnose) | ||||||||
| 17037 | BSI->addCapture(Var, HasBlocksAttr, ByRef, Nested, Loc, SourceLocation(), | ||||||||
| 17038 | CaptureType, Invalid); | ||||||||
| 17039 | |||||||||
| 17040 | return !Invalid; | ||||||||
| 17041 | } | ||||||||
| 17042 | |||||||||
| 17043 | |||||||||
| 17044 | /// Capture the given variable in the captured region. | ||||||||
| 17045 | static bool captureInCapturedRegion(CapturedRegionScopeInfo *RSI, | ||||||||
| 17046 | VarDecl *Var, | ||||||||
| 17047 | SourceLocation Loc, | ||||||||
| 17048 | const bool BuildAndDiagnose, | ||||||||
| 17049 | QualType &CaptureType, | ||||||||
| 17050 | QualType &DeclRefType, | ||||||||
| 17051 | const bool RefersToCapturedVariable, | ||||||||
| 17052 | Sema &S, bool Invalid) { | ||||||||
| 17053 | // By default, capture variables by reference. | ||||||||
| 17054 | bool ByRef = true; | ||||||||
| 17055 | // Using an LValue reference type is consistent with Lambdas (see below). | ||||||||
| 17056 | if (S.getLangOpts().OpenMP && RSI->CapRegionKind == CR_OpenMP) { | ||||||||
| 17057 | if (S.isOpenMPCapturedDecl(Var)) { | ||||||||
| 17058 | bool HasConst = DeclRefType.isConstQualified(); | ||||||||
| 17059 | DeclRefType = DeclRefType.getUnqualifiedType(); | ||||||||
| 17060 | // Don't lose diagnostics about assignments to const. | ||||||||
| 17061 | if (HasConst) | ||||||||
| 17062 | DeclRefType.addConst(); | ||||||||
| 17063 | } | ||||||||
| 17064 | // Do not capture firstprivates in tasks. | ||||||||
| 17065 | if (S.isOpenMPPrivateDecl(Var, RSI->OpenMPLevel, RSI->OpenMPCaptureLevel) != | ||||||||
| 17066 | OMPC_unknown) | ||||||||
| 17067 | return true; | ||||||||
| 17068 | ByRef = S.isOpenMPCapturedByRef(Var, RSI->OpenMPLevel, | ||||||||
| 17069 | RSI->OpenMPCaptureLevel); | ||||||||
| 17070 | } | ||||||||
| 17071 | |||||||||
| 17072 | if (ByRef) | ||||||||
| 17073 | CaptureType = S.Context.getLValueReferenceType(DeclRefType); | ||||||||
| 17074 | else | ||||||||
| 17075 | CaptureType = DeclRefType; | ||||||||
| 17076 | |||||||||
| 17077 | // Actually capture the variable. | ||||||||
| 17078 | if (BuildAndDiagnose) | ||||||||
| 17079 | RSI->addCapture(Var, /*isBlock*/ false, ByRef, RefersToCapturedVariable, | ||||||||
| 17080 | Loc, SourceLocation(), CaptureType, Invalid); | ||||||||
| 17081 | |||||||||
| 17082 | return !Invalid; | ||||||||
| 17083 | } | ||||||||
| 17084 | |||||||||
| 17085 | /// Capture the given variable in the lambda. | ||||||||
| 17086 | static bool captureInLambda(LambdaScopeInfo *LSI, | ||||||||
| 17087 | VarDecl *Var, | ||||||||
| 17088 | SourceLocation Loc, | ||||||||
| 17089 | const bool BuildAndDiagnose, | ||||||||
| 17090 | QualType &CaptureType, | ||||||||
| 17091 | QualType &DeclRefType, | ||||||||
| 17092 | const bool RefersToCapturedVariable, | ||||||||
| 17093 | const Sema::TryCaptureKind Kind, | ||||||||
| 17094 | SourceLocation EllipsisLoc, | ||||||||
| 17095 | const bool IsTopScope, | ||||||||
| 17096 | Sema &S, bool Invalid) { | ||||||||
| 17097 | // Determine whether we are capturing by reference or by value. | ||||||||
| 17098 | bool ByRef = false; | ||||||||
| 17099 | if (IsTopScope && Kind != Sema::TryCapture_Implicit) { | ||||||||
| 17100 | ByRef = (Kind == Sema::TryCapture_ExplicitByRef); | ||||||||
| 17101 | } else { | ||||||||
| 17102 | ByRef = (LSI->ImpCaptureStyle == LambdaScopeInfo::ImpCap_LambdaByref); | ||||||||
| 17103 | } | ||||||||
| 17104 | |||||||||
| 17105 | // Compute the type of the field that will capture this variable. | ||||||||
| 17106 | if (ByRef) { | ||||||||
| 17107 | // C++11 [expr.prim.lambda]p15: | ||||||||
| 17108 | // An entity is captured by reference if it is implicitly or | ||||||||
| 17109 | // explicitly captured but not captured by copy. It is | ||||||||
| 17110 | // unspecified whether additional unnamed non-static data | ||||||||
| 17111 | // members are declared in the closure type for entities | ||||||||
| 17112 | // captured by reference. | ||||||||
| 17113 | // | ||||||||
| 17114 | // FIXME: It is not clear whether we want to build an lvalue reference | ||||||||
| 17115 | // to the DeclRefType or to CaptureType.getNonReferenceType(). GCC appears | ||||||||
| 17116 | // to do the former, while EDG does the latter. Core issue 1249 will | ||||||||
| 17117 | // clarify, but for now we follow GCC because it's a more permissive and | ||||||||
| 17118 | // easily defensible position. | ||||||||
| 17119 | CaptureType = S.Context.getLValueReferenceType(DeclRefType); | ||||||||
| 17120 | } else { | ||||||||
| 17121 | // C++11 [expr.prim.lambda]p14: | ||||||||
| 17122 | // For each entity captured by copy, an unnamed non-static | ||||||||
| 17123 | // data member is declared in the closure type. The | ||||||||
| 17124 | // declaration order of these members is unspecified. The type | ||||||||
| 17125 | // of such a data member is the type of the corresponding | ||||||||
| 17126 | // captured entity if the entity is not a reference to an | ||||||||
| 17127 | // object, or the referenced type otherwise. [Note: If the | ||||||||
| 17128 | // captured entity is a reference to a function, the | ||||||||
| 17129 | // corresponding data member is also a reference to a | ||||||||
| 17130 | // function. - end note ] | ||||||||
| 17131 | if (const ReferenceType *RefType = CaptureType->getAs<ReferenceType>()){ | ||||||||
| 17132 | if (!RefType->getPointeeType()->isFunctionType()) | ||||||||
| 17133 | CaptureType = RefType->getPointeeType(); | ||||||||
| 17134 | } | ||||||||
| 17135 | |||||||||
| 17136 | // Forbid the lambda copy-capture of autoreleasing variables. | ||||||||
| 17137 | if (!Invalid && | ||||||||
| 17138 | CaptureType.getObjCLifetime() == Qualifiers::OCL_Autoreleasing) { | ||||||||
| 17139 | if (BuildAndDiagnose) { | ||||||||
| 17140 | S.Diag(Loc, diag::err_arc_autoreleasing_capture) << /*lambda*/ 1; | ||||||||
| 17141 | S.Diag(Var->getLocation(), diag::note_previous_decl) | ||||||||
| 17142 | << Var->getDeclName(); | ||||||||
| 17143 | Invalid = true; | ||||||||
| 17144 | } else { | ||||||||
| 17145 | return false; | ||||||||
| 17146 | } | ||||||||
| 17147 | } | ||||||||
| 17148 | |||||||||
| 17149 | // Make sure that by-copy captures are of a complete and non-abstract type. | ||||||||
| 17150 | if (!Invalid && BuildAndDiagnose) { | ||||||||
| 17151 | if (!CaptureType->isDependentType() && | ||||||||
| 17152 | S.RequireCompleteSizedType( | ||||||||
| 17153 | Loc, CaptureType, | ||||||||
| 17154 | diag::err_capture_of_incomplete_or_sizeless_type, | ||||||||
| 17155 | Var->getDeclName())) | ||||||||
| 17156 | Invalid = true; | ||||||||
| 17157 | else if (S.RequireNonAbstractType(Loc, CaptureType, | ||||||||
| 17158 | diag::err_capture_of_abstract_type)) | ||||||||
| 17159 | Invalid = true; | ||||||||
| 17160 | } | ||||||||
| 17161 | } | ||||||||
| 17162 | |||||||||
| 17163 | // Compute the type of a reference to this captured variable. | ||||||||
| 17164 | if (ByRef) | ||||||||
| 17165 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
| 17166 | else { | ||||||||
| 17167 | // C++ [expr.prim.lambda]p5: | ||||||||
| 17168 | // The closure type for a lambda-expression has a public inline | ||||||||
| 17169 | // function call operator [...]. This function call operator is | ||||||||
| 17170 | // declared const (9.3.1) if and only if the lambda-expression's | ||||||||
| 17171 | // parameter-declaration-clause is not followed by mutable. | ||||||||
| 17172 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
| 17173 | if (!LSI->Mutable && !CaptureType->isReferenceType()) | ||||||||
| 17174 | DeclRefType.addConst(); | ||||||||
| 17175 | } | ||||||||
| 17176 | |||||||||
| 17177 | // Add the capture. | ||||||||
| 17178 | if (BuildAndDiagnose) | ||||||||
| 17179 | LSI->addCapture(Var, /*isBlock=*/false, ByRef, RefersToCapturedVariable, | ||||||||
| 17180 | Loc, EllipsisLoc, CaptureType, Invalid); | ||||||||
| 17181 | |||||||||
| 17182 | return !Invalid; | ||||||||
| 17183 | } | ||||||||
| 17184 | |||||||||
| 17185 | bool Sema::tryCaptureVariable( | ||||||||
| 17186 | VarDecl *Var, SourceLocation ExprLoc, TryCaptureKind Kind, | ||||||||
| 17187 | SourceLocation EllipsisLoc, bool BuildAndDiagnose, QualType &CaptureType, | ||||||||
| 17188 | QualType &DeclRefType, const unsigned *const FunctionScopeIndexToStopAt) { | ||||||||
| 17189 | // An init-capture is notionally from the context surrounding its | ||||||||
| 17190 | // declaration, but its parent DC is the lambda class. | ||||||||
| 17191 | DeclContext *VarDC = Var->getDeclContext(); | ||||||||
| 17192 | if (Var->isInitCapture()) | ||||||||
| 17193 | VarDC = VarDC->getParent(); | ||||||||
| 17194 | |||||||||
| 17195 | DeclContext *DC = CurContext; | ||||||||
| 17196 | const unsigned MaxFunctionScopesIndex = FunctionScopeIndexToStopAt | ||||||||
| 17197 | ? *FunctionScopeIndexToStopAt : FunctionScopes.size() - 1; | ||||||||
| 17198 | // We need to sync up the Declaration Context with the | ||||||||
| 17199 | // FunctionScopeIndexToStopAt | ||||||||
| 17200 | if (FunctionScopeIndexToStopAt) { | ||||||||
| 17201 | unsigned FSIndex = FunctionScopes.size() - 1; | ||||||||
| 17202 | while (FSIndex != MaxFunctionScopesIndex) { | ||||||||
| 17203 | DC = getLambdaAwareParentOfDeclContext(DC); | ||||||||
| 17204 | --FSIndex; | ||||||||
| 17205 | } | ||||||||
| 17206 | } | ||||||||
| 17207 | |||||||||
| 17208 | |||||||||
| 17209 | // If the variable is declared in the current context, there is no need to | ||||||||
| 17210 | // capture it. | ||||||||
| 17211 | if (VarDC == DC) return true; | ||||||||
| 17212 | |||||||||
| 17213 | // Capture global variables if it is required to use private copy of this | ||||||||
| 17214 | // variable. | ||||||||
| 17215 | bool IsGlobal = !Var->hasLocalStorage(); | ||||||||
| 17216 | if (IsGlobal && | ||||||||
| 17217 | !(LangOpts.OpenMP && isOpenMPCapturedDecl(Var, /*CheckScopeInfo=*/true, | ||||||||
| 17218 | MaxFunctionScopesIndex))) | ||||||||
| 17219 | return true; | ||||||||
| 17220 | Var = Var->getCanonicalDecl(); | ||||||||
| 17221 | |||||||||
| 17222 | // Walk up the stack to determine whether we can capture the variable, | ||||||||
| 17223 | // performing the "simple" checks that don't depend on type. We stop when | ||||||||
| 17224 | // we've either hit the declared scope of the variable or find an existing | ||||||||
| 17225 | // capture of that variable. We start from the innermost capturing-entity | ||||||||
| 17226 | // (the DC) and ensure that all intervening capturing-entities | ||||||||
| 17227 | // (blocks/lambdas etc.) between the innermost capturer and the variable`s | ||||||||
| 17228 | // declcontext can either capture the variable or have already captured | ||||||||
| 17229 | // the variable. | ||||||||
| 17230 | CaptureType = Var->getType(); | ||||||||
| 17231 | DeclRefType = CaptureType.getNonReferenceType(); | ||||||||
| 17232 | bool Nested = false; | ||||||||
| 17233 | bool Explicit = (Kind != TryCapture_Implicit); | ||||||||
| 17234 | unsigned FunctionScopesIndex = MaxFunctionScopesIndex; | ||||||||
| 17235 | do { | ||||||||
| 17236 | // Only block literals, captured statements, and lambda expressions can | ||||||||
| 17237 | // capture; other scopes don't work. | ||||||||
| 17238 | DeclContext *ParentDC = getParentOfCapturingContextOrNull(DC, Var, | ||||||||
| 17239 | ExprLoc, | ||||||||
| 17240 | BuildAndDiagnose, | ||||||||
| 17241 | *this); | ||||||||
| 17242 | // We need to check for the parent *first* because, if we *have* | ||||||||
| 17243 | // private-captured a global variable, we need to recursively capture it in | ||||||||
| 17244 | // intermediate blocks, lambdas, etc. | ||||||||
| 17245 | if (!ParentDC) { | ||||||||
| 17246 | if (IsGlobal) { | ||||||||
| 17247 | FunctionScopesIndex = MaxFunctionScopesIndex - 1; | ||||||||
| 17248 | break; | ||||||||
| 17249 | } | ||||||||
| 17250 | return true; | ||||||||
| 17251 | } | ||||||||
| 17252 | |||||||||
| 17253 | FunctionScopeInfo *FSI = FunctionScopes[FunctionScopesIndex]; | ||||||||
| 17254 | CapturingScopeInfo *CSI = cast<CapturingScopeInfo>(FSI); | ||||||||
| 17255 | |||||||||
| 17256 | |||||||||
| 17257 | // Check whether we've already captured it. | ||||||||
| 17258 | if (isVariableAlreadyCapturedInScopeInfo(CSI, Var, Nested, CaptureType, | ||||||||
| 17259 | DeclRefType)) { | ||||||||
| 17260 | CSI->getCapture(Var).markUsed(BuildAndDiagnose); | ||||||||
| 17261 | break; | ||||||||
| 17262 | } | ||||||||
| 17263 | // If we are instantiating a generic lambda call operator body, | ||||||||
| 17264 | // we do not want to capture new variables. What was captured | ||||||||
| 17265 | // during either a lambdas transformation or initial parsing | ||||||||
| 17266 | // should be used. | ||||||||
| 17267 | if (isGenericLambdaCallOperatorSpecialization(DC)) { | ||||||||
| 17268 | if (BuildAndDiagnose) { | ||||||||
| 17269 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(CSI); | ||||||||
| 17270 | if (LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None) { | ||||||||
| 17271 | Diag(ExprLoc, diag::err_lambda_impcap) << Var; | ||||||||
| 17272 | Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 17273 | Diag(LSI->Lambda->getBeginLoc(), diag::note_lambda_decl); | ||||||||
| 17274 | } else | ||||||||
| 17275 | diagnoseUncapturableValueReference(*this, ExprLoc, Var, DC); | ||||||||
| 17276 | } | ||||||||
| 17277 | return true; | ||||||||
| 17278 | } | ||||||||
| 17279 | |||||||||
| 17280 | // Try to capture variable-length arrays types. | ||||||||
| 17281 | if (Var->getType()->isVariablyModifiedType()) { | ||||||||
| 17282 | // We're going to walk down into the type and look for VLA | ||||||||
| 17283 | // expressions. | ||||||||
| 17284 | QualType QTy = Var->getType(); | ||||||||
| 17285 | if (ParmVarDecl *PVD = dyn_cast_or_null<ParmVarDecl>(Var)) | ||||||||
| 17286 | QTy = PVD->getOriginalType(); | ||||||||
| 17287 | captureVariablyModifiedType(Context, QTy, CSI); | ||||||||
| 17288 | } | ||||||||
| 17289 | |||||||||
| 17290 | if (getLangOpts().OpenMP) { | ||||||||
| 17291 | if (auto *RSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) { | ||||||||
| 17292 | // OpenMP private variables should not be captured in outer scope, so | ||||||||
| 17293 | // just break here. Similarly, global variables that are captured in a | ||||||||
| 17294 | // target region should not be captured outside the scope of the region. | ||||||||
| 17295 | if (RSI->CapRegionKind == CR_OpenMP) { | ||||||||
| 17296 | OpenMPClauseKind IsOpenMPPrivateDecl = isOpenMPPrivateDecl( | ||||||||
| 17297 | Var, RSI->OpenMPLevel, RSI->OpenMPCaptureLevel); | ||||||||
| 17298 | // If the variable is private (i.e. not captured) and has variably | ||||||||
| 17299 | // modified type, we still need to capture the type for correct | ||||||||
| 17300 | // codegen in all regions, associated with the construct. Currently, | ||||||||
| 17301 | // it is captured in the innermost captured region only. | ||||||||
| 17302 | if (IsOpenMPPrivateDecl != OMPC_unknown && | ||||||||
| 17303 | Var->getType()->isVariablyModifiedType()) { | ||||||||
| 17304 | QualType QTy = Var->getType(); | ||||||||
| 17305 | if (ParmVarDecl *PVD = dyn_cast_or_null<ParmVarDecl>(Var)) | ||||||||
| 17306 | QTy = PVD->getOriginalType(); | ||||||||
| 17307 | for (int I = 1, E = getNumberOfConstructScopes(RSI->OpenMPLevel); | ||||||||
| 17308 | I < E; ++I) { | ||||||||
| 17309 | auto *OuterRSI = cast<CapturedRegionScopeInfo>( | ||||||||
| 17310 | FunctionScopes[FunctionScopesIndex - I]); | ||||||||
| 17311 | assert(RSI->OpenMPLevel == OuterRSI->OpenMPLevel &&((RSI->OpenMPLevel == OuterRSI->OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? static_cast<void> (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17313, __PRETTY_FUNCTION__)) | ||||||||
| 17312 | "Wrong number of captured regions associated with the "((RSI->OpenMPLevel == OuterRSI->OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? static_cast<void> (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17313, __PRETTY_FUNCTION__)) | ||||||||
| 17313 | "OpenMP construct.")((RSI->OpenMPLevel == OuterRSI->OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? static_cast<void> (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17313, __PRETTY_FUNCTION__)); | ||||||||
| 17314 | captureVariablyModifiedType(Context, QTy, OuterRSI); | ||||||||
| 17315 | } | ||||||||
| 17316 | } | ||||||||
| 17317 | bool IsTargetCap = | ||||||||
| 17318 | IsOpenMPPrivateDecl != OMPC_private && | ||||||||
| 17319 | isOpenMPTargetCapturedDecl(Var, RSI->OpenMPLevel, | ||||||||
| 17320 | RSI->OpenMPCaptureLevel); | ||||||||
| 17321 | // Do not capture global if it is not privatized in outer regions. | ||||||||
| 17322 | bool IsGlobalCap = | ||||||||
| 17323 | IsGlobal && isOpenMPGlobalCapturedDecl(Var, RSI->OpenMPLevel, | ||||||||
| 17324 | RSI->OpenMPCaptureLevel); | ||||||||
| 17325 | |||||||||
| 17326 | // When we detect target captures we are looking from inside the | ||||||||
| 17327 | // target region, therefore we need to propagate the capture from the | ||||||||
| 17328 | // enclosing region. Therefore, the capture is not initially nested. | ||||||||
| 17329 | if (IsTargetCap) | ||||||||
| 17330 | adjustOpenMPTargetScopeIndex(FunctionScopesIndex, RSI->OpenMPLevel); | ||||||||
| 17331 | |||||||||
| 17332 | if (IsTargetCap || IsOpenMPPrivateDecl == OMPC_private || | ||||||||
| 17333 | (IsGlobal && !IsGlobalCap)) { | ||||||||
| 17334 | Nested = !IsTargetCap; | ||||||||
| 17335 | DeclRefType = DeclRefType.getUnqualifiedType(); | ||||||||
| 17336 | CaptureType = Context.getLValueReferenceType(DeclRefType); | ||||||||
| 17337 | break; | ||||||||
| 17338 | } | ||||||||
| 17339 | } | ||||||||
| 17340 | } | ||||||||
| 17341 | } | ||||||||
| 17342 | if (CSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None && !Explicit) { | ||||||||
| 17343 | // No capture-default, and this is not an explicit capture | ||||||||
| 17344 | // so cannot capture this variable. | ||||||||
| 17345 | if (BuildAndDiagnose) { | ||||||||
| 17346 | Diag(ExprLoc, diag::err_lambda_impcap) << Var; | ||||||||
| 17347 | Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||||||
| 17348 | if (cast<LambdaScopeInfo>(CSI)->Lambda) | ||||||||
| 17349 | Diag(cast<LambdaScopeInfo>(CSI)->Lambda->getBeginLoc(), | ||||||||
| 17350 | diag::note_lambda_decl); | ||||||||
| 17351 | // FIXME: If we error out because an outer lambda can not implicitly | ||||||||
| 17352 | // capture a variable that an inner lambda explicitly captures, we | ||||||||
| 17353 | // should have the inner lambda do the explicit capture - because | ||||||||
| 17354 | // it makes for cleaner diagnostics later. This would purely be done | ||||||||
| 17355 | // so that the diagnostic does not misleadingly claim that a variable | ||||||||
| 17356 | // can not be captured by a lambda implicitly even though it is captured | ||||||||
| 17357 | // explicitly. Suggestion: | ||||||||
| 17358 | // - create const bool VariableCaptureWasInitiallyExplicit = Explicit | ||||||||
| 17359 | // at the function head | ||||||||
| 17360 | // - cache the StartingDeclContext - this must be a lambda | ||||||||
| 17361 | // - captureInLambda in the innermost lambda the variable. | ||||||||
| 17362 | } | ||||||||
| 17363 | return true; | ||||||||
| 17364 | } | ||||||||
| 17365 | |||||||||
| 17366 | FunctionScopesIndex--; | ||||||||
| 17367 | DC = ParentDC; | ||||||||
| 17368 | Explicit = false; | ||||||||
| 17369 | } while (!VarDC->Equals(DC)); | ||||||||
| 17370 | |||||||||
| 17371 | // Walk back down the scope stack, (e.g. from outer lambda to inner lambda) | ||||||||
| 17372 | // computing the type of the capture at each step, checking type-specific | ||||||||
| 17373 | // requirements, and adding captures if requested. | ||||||||
| 17374 | // If the variable had already been captured previously, we start capturing | ||||||||
| 17375 | // at the lambda nested within that one. | ||||||||
| 17376 | bool Invalid = false; | ||||||||
| 17377 | for (unsigned I = ++FunctionScopesIndex, N = MaxFunctionScopesIndex + 1; I != N; | ||||||||
| 17378 | ++I) { | ||||||||
| 17379 | CapturingScopeInfo *CSI = cast<CapturingScopeInfo>(FunctionScopes[I]); | ||||||||
| 17380 | |||||||||
| 17381 | // Certain capturing entities (lambdas, blocks etc.) are not allowed to capture | ||||||||
| 17382 | // certain types of variables (unnamed, variably modified types etc.) | ||||||||
| 17383 | // so check for eligibility. | ||||||||
| 17384 | if (!Invalid) | ||||||||
| 17385 | Invalid = | ||||||||
| 17386 | !isVariableCapturable(CSI, Var, ExprLoc, BuildAndDiagnose, *this); | ||||||||
| 17387 | |||||||||
| 17388 | // After encountering an error, if we're actually supposed to capture, keep | ||||||||
| 17389 | // capturing in nested contexts to suppress any follow-on diagnostics. | ||||||||
| 17390 | if (Invalid && !BuildAndDiagnose) | ||||||||
| 17391 | return true; | ||||||||
| 17392 | |||||||||
| 17393 | if (BlockScopeInfo *BSI = dyn_cast<BlockScopeInfo>(CSI)) { | ||||||||
| 17394 | Invalid = !captureInBlock(BSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, | ||||||||
| 17395 | DeclRefType, Nested, *this, Invalid); | ||||||||
| 17396 | Nested = true; | ||||||||
| 17397 | } else if (CapturedRegionScopeInfo *RSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) { | ||||||||
| 17398 | Invalid = !captureInCapturedRegion(RSI, Var, ExprLoc, BuildAndDiagnose, | ||||||||
| 17399 | CaptureType, DeclRefType, Nested, | ||||||||
| 17400 | *this, Invalid); | ||||||||
| 17401 | Nested = true; | ||||||||
| 17402 | } else { | ||||||||
| 17403 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(CSI); | ||||||||
| 17404 | Invalid = | ||||||||
| 17405 | !captureInLambda(LSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, | ||||||||
| 17406 | DeclRefType, Nested, Kind, EllipsisLoc, | ||||||||
| 17407 | /*IsTopScope*/ I == N - 1, *this, Invalid); | ||||||||
| 17408 | Nested = true; | ||||||||
| 17409 | } | ||||||||
| 17410 | |||||||||
| 17411 | if (Invalid && !BuildAndDiagnose) | ||||||||
| 17412 | return true; | ||||||||
| 17413 | } | ||||||||
| 17414 | return Invalid; | ||||||||
| 17415 | } | ||||||||
| 17416 | |||||||||
| 17417 | bool Sema::tryCaptureVariable(VarDecl *Var, SourceLocation Loc, | ||||||||
| 17418 | TryCaptureKind Kind, SourceLocation EllipsisLoc) { | ||||||||
| 17419 | QualType CaptureType; | ||||||||
| 17420 | QualType DeclRefType; | ||||||||
| 17421 | return tryCaptureVariable(Var, Loc, Kind, EllipsisLoc, | ||||||||
| 17422 | /*BuildAndDiagnose=*/true, CaptureType, | ||||||||
| 17423 | DeclRefType, nullptr); | ||||||||
| 17424 | } | ||||||||
| 17425 | |||||||||
| 17426 | bool Sema::NeedToCaptureVariable(VarDecl *Var, SourceLocation Loc) { | ||||||||
| 17427 | QualType CaptureType; | ||||||||
| 17428 | QualType DeclRefType; | ||||||||
| 17429 | return !tryCaptureVariable(Var, Loc, TryCapture_Implicit, SourceLocation(), | ||||||||
| 17430 | /*BuildAndDiagnose=*/false, CaptureType, | ||||||||
| 17431 | DeclRefType, nullptr); | ||||||||
| 17432 | } | ||||||||
| 17433 | |||||||||
| 17434 | QualType Sema::getCapturedDeclRefType(VarDecl *Var, SourceLocation Loc) { | ||||||||
| 17435 | QualType CaptureType; | ||||||||
| 17436 | QualType DeclRefType; | ||||||||
| 17437 | |||||||||
| 17438 | // Determine whether we can capture this variable. | ||||||||
| 17439 | if (tryCaptureVariable(Var, Loc, TryCapture_Implicit, SourceLocation(), | ||||||||
| 17440 | /*BuildAndDiagnose=*/false, CaptureType, | ||||||||
| 17441 | DeclRefType, nullptr)) | ||||||||
| 17442 | return QualType(); | ||||||||
| 17443 | |||||||||
| 17444 | return DeclRefType; | ||||||||
| 17445 | } | ||||||||
| 17446 | |||||||||
| 17447 | namespace { | ||||||||
| 17448 | // Helper to copy the template arguments from a DeclRefExpr or MemberExpr. | ||||||||
| 17449 | // The produced TemplateArgumentListInfo* points to data stored within this | ||||||||
| 17450 | // object, so should only be used in contexts where the pointer will not be | ||||||||
| 17451 | // used after the CopiedTemplateArgs object is destroyed. | ||||||||
| 17452 | class CopiedTemplateArgs { | ||||||||
| 17453 | bool HasArgs; | ||||||||
| 17454 | TemplateArgumentListInfo TemplateArgStorage; | ||||||||
| 17455 | public: | ||||||||
| 17456 | template<typename RefExpr> | ||||||||
| 17457 | CopiedTemplateArgs(RefExpr *E) : HasArgs(E->hasExplicitTemplateArgs()) { | ||||||||
| 17458 | if (HasArgs) | ||||||||
| 17459 | E->copyTemplateArgumentsInto(TemplateArgStorage); | ||||||||
| 17460 | } | ||||||||
| 17461 | operator TemplateArgumentListInfo*() | ||||||||
| 17462 | #ifdef __has_cpp_attribute | ||||||||
| 17463 | #if0 __has_cpp_attribute(clang::lifetimebound)1 | ||||||||
| 17464 | [[clang::lifetimebound]] | ||||||||
| 17465 | #endif | ||||||||
| 17466 | #endif | ||||||||
| 17467 | { | ||||||||
| 17468 | return HasArgs ? &TemplateArgStorage : nullptr; | ||||||||
| 17469 | } | ||||||||
| 17470 | }; | ||||||||
| 17471 | } | ||||||||
| 17472 | |||||||||
| 17473 | /// Walk the set of potential results of an expression and mark them all as | ||||||||
| 17474 | /// non-odr-uses if they satisfy the side-conditions of the NonOdrUseReason. | ||||||||
| 17475 | /// | ||||||||
| 17476 | /// \return A new expression if we found any potential results, ExprEmpty() if | ||||||||
| 17477 | /// not, and ExprError() if we diagnosed an error. | ||||||||
| 17478 | static ExprResult rebuildPotentialResultsAsNonOdrUsed(Sema &S, Expr *E, | ||||||||
| 17479 | NonOdrUseReason NOUR) { | ||||||||
| 17480 | // Per C++11 [basic.def.odr], a variable is odr-used "unless it is | ||||||||
| 17481 | // an object that satisfies the requirements for appearing in a | ||||||||
| 17482 | // constant expression (5.19) and the lvalue-to-rvalue conversion (4.1) | ||||||||
| 17483 | // is immediately applied." This function handles the lvalue-to-rvalue | ||||||||
| 17484 | // conversion part. | ||||||||
| 17485 | // | ||||||||
| 17486 | // If we encounter a node that claims to be an odr-use but shouldn't be, we | ||||||||
| 17487 | // transform it into the relevant kind of non-odr-use node and rebuild the | ||||||||
| 17488 | // tree of nodes leading to it. | ||||||||
| 17489 | // | ||||||||
| 17490 | // This is a mini-TreeTransform that only transforms a restricted subset of | ||||||||
| 17491 | // nodes (and only certain operands of them). | ||||||||
| 17492 | |||||||||
| 17493 | // Rebuild a subexpression. | ||||||||
| 17494 | auto Rebuild = [&](Expr *Sub) { | ||||||||
| 17495 | return rebuildPotentialResultsAsNonOdrUsed(S, Sub, NOUR); | ||||||||
| 17496 | }; | ||||||||
| 17497 | |||||||||
| 17498 | // Check whether a potential result satisfies the requirements of NOUR. | ||||||||
| 17499 | auto IsPotentialResultOdrUsed = [&](NamedDecl *D) { | ||||||||
| 17500 | // Any entity other than a VarDecl is always odr-used whenever it's named | ||||||||
| 17501 | // in a potentially-evaluated expression. | ||||||||
| 17502 | auto *VD = dyn_cast<VarDecl>(D); | ||||||||
| 17503 | if (!VD) | ||||||||
| 17504 | return true; | ||||||||
| 17505 | |||||||||
| 17506 | // C++2a [basic.def.odr]p4: | ||||||||
| 17507 | // A variable x whose name appears as a potentially-evalauted expression | ||||||||
| 17508 | // e is odr-used by e unless | ||||||||
| 17509 | // -- x is a reference that is usable in constant expressions, or | ||||||||
| 17510 | // -- x is a variable of non-reference type that is usable in constant | ||||||||
| 17511 | // expressions and has no mutable subobjects, and e is an element of | ||||||||
| 17512 | // the set of potential results of an expression of | ||||||||
| 17513 | // non-volatile-qualified non-class type to which the lvalue-to-rvalue | ||||||||
| 17514 | // conversion is applied, or | ||||||||
| 17515 | // -- x is a variable of non-reference type, and e is an element of the | ||||||||
| 17516 | // set of potential results of a discarded-value expression to which | ||||||||
| 17517 | // the lvalue-to-rvalue conversion is not applied | ||||||||
| 17518 | // | ||||||||
| 17519 | // We check the first bullet and the "potentially-evaluated" condition in | ||||||||
| 17520 | // BuildDeclRefExpr. We check the type requirements in the second bullet | ||||||||
| 17521 | // in CheckLValueToRValueConversionOperand below. | ||||||||
| 17522 | switch (NOUR) { | ||||||||
| 17523 | case NOUR_None: | ||||||||
| 17524 | case NOUR_Unevaluated: | ||||||||
| 17525 | llvm_unreachable("unexpected non-odr-use-reason")::llvm::llvm_unreachable_internal("unexpected non-odr-use-reason" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17525); | ||||||||
| 17526 | |||||||||
| 17527 | case NOUR_Constant: | ||||||||
| 17528 | // Constant references were handled when they were built. | ||||||||
| 17529 | if (VD->getType()->isReferenceType()) | ||||||||
| 17530 | return true; | ||||||||
| 17531 | if (auto *RD = VD->getType()->getAsCXXRecordDecl()) | ||||||||
| 17532 | if (RD->hasMutableFields()) | ||||||||
| 17533 | return true; | ||||||||
| 17534 | if (!VD->isUsableInConstantExpressions(S.Context)) | ||||||||
| 17535 | return true; | ||||||||
| 17536 | break; | ||||||||
| 17537 | |||||||||
| 17538 | case NOUR_Discarded: | ||||||||
| 17539 | if (VD->getType()->isReferenceType()) | ||||||||
| 17540 | return true; | ||||||||
| 17541 | break; | ||||||||
| 17542 | } | ||||||||
| 17543 | return false; | ||||||||
| 17544 | }; | ||||||||
| 17545 | |||||||||
| 17546 | // Mark that this expression does not constitute an odr-use. | ||||||||
| 17547 | auto MarkNotOdrUsed = [&] { | ||||||||
| 17548 | S.MaybeODRUseExprs.remove(E); | ||||||||
| 17549 | if (LambdaScopeInfo *LSI = S.getCurLambda()) | ||||||||
| 17550 | LSI->markVariableExprAsNonODRUsed(E); | ||||||||
| 17551 | }; | ||||||||
| 17552 | |||||||||
| 17553 | // C++2a [basic.def.odr]p2: | ||||||||
| 17554 | // The set of potential results of an expression e is defined as follows: | ||||||||
| 17555 | switch (E->getStmtClass()) { | ||||||||
| 17556 | // -- If e is an id-expression, ... | ||||||||
| 17557 | case Expr::DeclRefExprClass: { | ||||||||
| 17558 | auto *DRE = cast<DeclRefExpr>(E); | ||||||||
| 17559 | if (DRE->isNonOdrUse() || IsPotentialResultOdrUsed(DRE->getDecl())) | ||||||||
| 17560 | break; | ||||||||
| 17561 | |||||||||
| 17562 | // Rebuild as a non-odr-use DeclRefExpr. | ||||||||
| 17563 | MarkNotOdrUsed(); | ||||||||
| 17564 | return DeclRefExpr::Create( | ||||||||
| 17565 | S.Context, DRE->getQualifierLoc(), DRE->getTemplateKeywordLoc(), | ||||||||
| 17566 | DRE->getDecl(), DRE->refersToEnclosingVariableOrCapture(), | ||||||||
| 17567 | DRE->getNameInfo(), DRE->getType(), DRE->getValueKind(), | ||||||||
| 17568 | DRE->getFoundDecl(), CopiedTemplateArgs(DRE), NOUR); | ||||||||
| 17569 | } | ||||||||
| 17570 | |||||||||
| 17571 | case Expr::FunctionParmPackExprClass: { | ||||||||
| 17572 | auto *FPPE = cast<FunctionParmPackExpr>(E); | ||||||||
| 17573 | // If any of the declarations in the pack is odr-used, then the expression | ||||||||
| 17574 | // as a whole constitutes an odr-use. | ||||||||
| 17575 | for (VarDecl *D : *FPPE) | ||||||||
| 17576 | if (IsPotentialResultOdrUsed(D)) | ||||||||
| 17577 | return ExprEmpty(); | ||||||||
| 17578 | |||||||||
| 17579 | // FIXME: Rebuild as a non-odr-use FunctionParmPackExpr? In practice, | ||||||||
| 17580 | // nothing cares about whether we marked this as an odr-use, but it might | ||||||||
| 17581 | // be useful for non-compiler tools. | ||||||||
| 17582 | MarkNotOdrUsed(); | ||||||||
| 17583 | break; | ||||||||
| 17584 | } | ||||||||
| 17585 | |||||||||
| 17586 | // -- If e is a subscripting operation with an array operand... | ||||||||
| 17587 | case Expr::ArraySubscriptExprClass: { | ||||||||
| 17588 | auto *ASE = cast<ArraySubscriptExpr>(E); | ||||||||
| 17589 | Expr *OldBase = ASE->getBase()->IgnoreImplicit(); | ||||||||
| 17590 | if (!OldBase->getType()->isArrayType()) | ||||||||
| 17591 | break; | ||||||||
| 17592 | ExprResult Base = Rebuild(OldBase); | ||||||||
| 17593 | if (!Base.isUsable()) | ||||||||
| 17594 | return Base; | ||||||||
| 17595 | Expr *LHS = ASE->getBase() == ASE->getLHS() ? Base.get() : ASE->getLHS(); | ||||||||
| 17596 | Expr *RHS = ASE->getBase() == ASE->getRHS() ? Base.get() : ASE->getRHS(); | ||||||||
| 17597 | SourceLocation LBracketLoc = ASE->getBeginLoc(); // FIXME: Not stored. | ||||||||
| 17598 | return S.ActOnArraySubscriptExpr(nullptr, LHS, LBracketLoc, RHS, | ||||||||
| 17599 | ASE->getRBracketLoc()); | ||||||||
| 17600 | } | ||||||||
| 17601 | |||||||||
| 17602 | case Expr::MemberExprClass: { | ||||||||
| 17603 | auto *ME = cast<MemberExpr>(E); | ||||||||
| 17604 | // -- If e is a class member access expression [...] naming a non-static | ||||||||
| 17605 | // data member... | ||||||||
| 17606 | if (isa<FieldDecl>(ME->getMemberDecl())) { | ||||||||
| 17607 | ExprResult Base = Rebuild(ME->getBase()); | ||||||||
| 17608 | if (!Base.isUsable()) | ||||||||
| 17609 | return Base; | ||||||||
| 17610 | return MemberExpr::Create( | ||||||||
| 17611 | S.Context, Base.get(), ME->isArrow(), ME->getOperatorLoc(), | ||||||||
| 17612 | ME->getQualifierLoc(), ME->getTemplateKeywordLoc(), | ||||||||
| 17613 | ME->getMemberDecl(), ME->getFoundDecl(), ME->getMemberNameInfo(), | ||||||||
| 17614 | CopiedTemplateArgs(ME), ME->getType(), ME->getValueKind(), | ||||||||
| 17615 | ME->getObjectKind(), ME->isNonOdrUse()); | ||||||||
| 17616 | } | ||||||||
| 17617 | |||||||||
| 17618 | if (ME->getMemberDecl()->isCXXInstanceMember()) | ||||||||
| 17619 | break; | ||||||||
| 17620 | |||||||||
| 17621 | // -- If e is a class member access expression naming a static data member, | ||||||||
| 17622 | // ... | ||||||||
| 17623 | if (ME->isNonOdrUse() || IsPotentialResultOdrUsed(ME->getMemberDecl())) | ||||||||
| 17624 | break; | ||||||||
| 17625 | |||||||||
| 17626 | // Rebuild as a non-odr-use MemberExpr. | ||||||||
| 17627 | MarkNotOdrUsed(); | ||||||||
| 17628 | return MemberExpr::Create( | ||||||||
| 17629 | S.Context, ME->getBase(), ME->isArrow(), ME->getOperatorLoc(), | ||||||||
| 17630 | ME->getQualifierLoc(), ME->getTemplateKeywordLoc(), ME->getMemberDecl(), | ||||||||
| 17631 | ME->getFoundDecl(), ME->getMemberNameInfo(), CopiedTemplateArgs(ME), | ||||||||
| 17632 | ME->getType(), ME->getValueKind(), ME->getObjectKind(), NOUR); | ||||||||
| 17633 | return ExprEmpty(); | ||||||||
| 17634 | } | ||||||||
| 17635 | |||||||||
| 17636 | case Expr::BinaryOperatorClass: { | ||||||||
| 17637 | auto *BO = cast<BinaryOperator>(E); | ||||||||
| 17638 | Expr *LHS = BO->getLHS(); | ||||||||
| 17639 | Expr *RHS = BO->getRHS(); | ||||||||
| 17640 | // -- If e is a pointer-to-member expression of the form e1 .* e2 ... | ||||||||
| 17641 | if (BO->getOpcode() == BO_PtrMemD) { | ||||||||
| 17642 | ExprResult Sub = Rebuild(LHS); | ||||||||
| 17643 | if (!Sub.isUsable()) | ||||||||
| 17644 | return Sub; | ||||||||
| 17645 | LHS = Sub.get(); | ||||||||
| 17646 | // -- If e is a comma expression, ... | ||||||||
| 17647 | } else if (BO->getOpcode() == BO_Comma) { | ||||||||
| 17648 | ExprResult Sub = Rebuild(RHS); | ||||||||
| 17649 | if (!Sub.isUsable()) | ||||||||
| 17650 | return Sub; | ||||||||
| 17651 | RHS = Sub.get(); | ||||||||
| 17652 | } else { | ||||||||
| 17653 | break; | ||||||||
| 17654 | } | ||||||||
| 17655 | return S.BuildBinOp(nullptr, BO->getOperatorLoc(), BO->getOpcode(), | ||||||||
| 17656 | LHS, RHS); | ||||||||
| 17657 | } | ||||||||
| 17658 | |||||||||
| 17659 | // -- If e has the form (e1)... | ||||||||
| 17660 | case Expr::ParenExprClass: { | ||||||||
| 17661 | auto *PE = cast<ParenExpr>(E); | ||||||||
| 17662 | ExprResult Sub = Rebuild(PE->getSubExpr()); | ||||||||
| 17663 | if (!Sub.isUsable()) | ||||||||
| 17664 | return Sub; | ||||||||
| 17665 | return S.ActOnParenExpr(PE->getLParen(), PE->getRParen(), Sub.get()); | ||||||||
| 17666 | } | ||||||||
| 17667 | |||||||||
| 17668 | // -- If e is a glvalue conditional expression, ... | ||||||||
| 17669 | // We don't apply this to a binary conditional operator. FIXME: Should we? | ||||||||
| 17670 | case Expr::ConditionalOperatorClass: { | ||||||||
| 17671 | auto *CO = cast<ConditionalOperator>(E); | ||||||||
| 17672 | ExprResult LHS = Rebuild(CO->getLHS()); | ||||||||
| 17673 | if (LHS.isInvalid()) | ||||||||
| 17674 | return ExprError(); | ||||||||
| 17675 | ExprResult RHS = Rebuild(CO->getRHS()); | ||||||||
| 17676 | if (RHS.isInvalid()) | ||||||||
| 17677 | return ExprError(); | ||||||||
| 17678 | if (!LHS.isUsable() && !RHS.isUsable()) | ||||||||
| 17679 | return ExprEmpty(); | ||||||||
| 17680 | if (!LHS.isUsable()) | ||||||||
| 17681 | LHS = CO->getLHS(); | ||||||||
| 17682 | if (!RHS.isUsable()) | ||||||||
| 17683 | RHS = CO->getRHS(); | ||||||||
| 17684 | return S.ActOnConditionalOp(CO->getQuestionLoc(), CO->getColonLoc(), | ||||||||
| 17685 | CO->getCond(), LHS.get(), RHS.get()); | ||||||||
| 17686 | } | ||||||||
| 17687 | |||||||||
| 17688 | // [Clang extension] | ||||||||
| 17689 | // -- If e has the form __extension__ e1... | ||||||||
| 17690 | case Expr::UnaryOperatorClass: { | ||||||||
| 17691 | auto *UO = cast<UnaryOperator>(E); | ||||||||
| 17692 | if (UO->getOpcode() != UO_Extension) | ||||||||
| 17693 | break; | ||||||||
| 17694 | ExprResult Sub = Rebuild(UO->getSubExpr()); | ||||||||
| 17695 | if (!Sub.isUsable()) | ||||||||
| 17696 | return Sub; | ||||||||
| 17697 | return S.BuildUnaryOp(nullptr, UO->getOperatorLoc(), UO_Extension, | ||||||||
| 17698 | Sub.get()); | ||||||||
| 17699 | } | ||||||||
| 17700 | |||||||||
| 17701 | // [Clang extension] | ||||||||
| 17702 | // -- If e has the form _Generic(...), the set of potential results is the | ||||||||
| 17703 | // union of the sets of potential results of the associated expressions. | ||||||||
| 17704 | case Expr::GenericSelectionExprClass: { | ||||||||
| 17705 | auto *GSE = cast<GenericSelectionExpr>(E); | ||||||||
| 17706 | |||||||||
| 17707 | SmallVector<Expr *, 4> AssocExprs; | ||||||||
| 17708 | bool AnyChanged = false; | ||||||||
| 17709 | for (Expr *OrigAssocExpr : GSE->getAssocExprs()) { | ||||||||
| 17710 | ExprResult AssocExpr = Rebuild(OrigAssocExpr); | ||||||||
| 17711 | if (AssocExpr.isInvalid()) | ||||||||
| 17712 | return ExprError(); | ||||||||
| 17713 | if (AssocExpr.isUsable()) { | ||||||||
| 17714 | AssocExprs.push_back(AssocExpr.get()); | ||||||||
| 17715 | AnyChanged = true; | ||||||||
| 17716 | } else { | ||||||||
| 17717 | AssocExprs.push_back(OrigAssocExpr); | ||||||||
| 17718 | } | ||||||||
| 17719 | } | ||||||||
| 17720 | |||||||||
| 17721 | return AnyChanged ? S.CreateGenericSelectionExpr( | ||||||||
| 17722 | GSE->getGenericLoc(), GSE->getDefaultLoc(), | ||||||||
| 17723 | GSE->getRParenLoc(), GSE->getControllingExpr(), | ||||||||
| 17724 | GSE->getAssocTypeSourceInfos(), AssocExprs) | ||||||||
| 17725 | : ExprEmpty(); | ||||||||
| 17726 | } | ||||||||
| 17727 | |||||||||
| 17728 | // [Clang extension] | ||||||||
| 17729 | // -- If e has the form __builtin_choose_expr(...), the set of potential | ||||||||
| 17730 | // results is the union of the sets of potential results of the | ||||||||
| 17731 | // second and third subexpressions. | ||||||||
| 17732 | case Expr::ChooseExprClass: { | ||||||||
| 17733 | auto *CE = cast<ChooseExpr>(E); | ||||||||
| 17734 | |||||||||
| 17735 | ExprResult LHS = Rebuild(CE->getLHS()); | ||||||||
| 17736 | if (LHS.isInvalid()) | ||||||||
| 17737 | return ExprError(); | ||||||||
| 17738 | |||||||||
| 17739 | ExprResult RHS = Rebuild(CE->getLHS()); | ||||||||
| 17740 | if (RHS.isInvalid()) | ||||||||
| 17741 | return ExprError(); | ||||||||
| 17742 | |||||||||
| 17743 | if (!LHS.get() && !RHS.get()) | ||||||||
| 17744 | return ExprEmpty(); | ||||||||
| 17745 | if (!LHS.isUsable()) | ||||||||
| 17746 | LHS = CE->getLHS(); | ||||||||
| 17747 | if (!RHS.isUsable()) | ||||||||
| 17748 | RHS = CE->getRHS(); | ||||||||
| 17749 | |||||||||
| 17750 | return S.ActOnChooseExpr(CE->getBuiltinLoc(), CE->getCond(), LHS.get(), | ||||||||
| 17751 | RHS.get(), CE->getRParenLoc()); | ||||||||
| 17752 | } | ||||||||
| 17753 | |||||||||
| 17754 | // Step through non-syntactic nodes. | ||||||||
| 17755 | case Expr::ConstantExprClass: { | ||||||||
| 17756 | auto *CE = cast<ConstantExpr>(E); | ||||||||
| 17757 | ExprResult Sub = Rebuild(CE->getSubExpr()); | ||||||||
| 17758 | if (!Sub.isUsable()) | ||||||||
| 17759 | return Sub; | ||||||||
| 17760 | return ConstantExpr::Create(S.Context, Sub.get()); | ||||||||
| 17761 | } | ||||||||
| 17762 | |||||||||
| 17763 | // We could mostly rely on the recursive rebuilding to rebuild implicit | ||||||||
| 17764 | // casts, but not at the top level, so rebuild them here. | ||||||||
| 17765 | case Expr::ImplicitCastExprClass: { | ||||||||
| 17766 | auto *ICE = cast<ImplicitCastExpr>(E); | ||||||||
| 17767 | // Only step through the narrow set of cast kinds we expect to encounter. | ||||||||
| 17768 | // Anything else suggests we've left the region in which potential results | ||||||||
| 17769 | // can be found. | ||||||||
| 17770 | switch (ICE->getCastKind()) { | ||||||||
| 17771 | case CK_NoOp: | ||||||||
| 17772 | case CK_DerivedToBase: | ||||||||
| 17773 | case CK_UncheckedDerivedToBase: { | ||||||||
| 17774 | ExprResult Sub = Rebuild(ICE->getSubExpr()); | ||||||||
| 17775 | if (!Sub.isUsable()) | ||||||||
| 17776 | return Sub; | ||||||||
| 17777 | CXXCastPath Path(ICE->path()); | ||||||||
| 17778 | return S.ImpCastExprToType(Sub.get(), ICE->getType(), ICE->getCastKind(), | ||||||||
| 17779 | ICE->getValueKind(), &Path); | ||||||||
| 17780 | } | ||||||||
| 17781 | |||||||||
| 17782 | default: | ||||||||
| 17783 | break; | ||||||||
| 17784 | } | ||||||||
| 17785 | break; | ||||||||
| 17786 | } | ||||||||
| 17787 | |||||||||
| 17788 | default: | ||||||||
| 17789 | break; | ||||||||
| 17790 | } | ||||||||
| 17791 | |||||||||
| 17792 | // Can't traverse through this node. Nothing to do. | ||||||||
| 17793 | return ExprEmpty(); | ||||||||
| 17794 | } | ||||||||
| 17795 | |||||||||
| 17796 | ExprResult Sema::CheckLValueToRValueConversionOperand(Expr *E) { | ||||||||
| 17797 | // Check whether the operand is or contains an object of non-trivial C union | ||||||||
| 17798 | // type. | ||||||||
| 17799 | if (E->getType().isVolatileQualified() && | ||||||||
| 17800 | (E->getType().hasNonTrivialToPrimitiveDestructCUnion() || | ||||||||
| 17801 | E->getType().hasNonTrivialToPrimitiveCopyCUnion())) | ||||||||
| 17802 | checkNonTrivialCUnion(E->getType(), E->getExprLoc(), | ||||||||
| 17803 | Sema::NTCUC_LValueToRValueVolatile, | ||||||||
| 17804 | NTCUK_Destruct|NTCUK_Copy); | ||||||||
| 17805 | |||||||||
| 17806 | // C++2a [basic.def.odr]p4: | ||||||||
| 17807 | // [...] an expression of non-volatile-qualified non-class type to which | ||||||||
| 17808 | // the lvalue-to-rvalue conversion is applied [...] | ||||||||
| 17809 | if (E->getType().isVolatileQualified() || E->getType()->getAs<RecordType>()) | ||||||||
| 17810 | return E; | ||||||||
| 17811 | |||||||||
| 17812 | ExprResult Result = | ||||||||
| 17813 | rebuildPotentialResultsAsNonOdrUsed(*this, E, NOUR_Constant); | ||||||||
| 17814 | if (Result.isInvalid()) | ||||||||
| 17815 | return ExprError(); | ||||||||
| 17816 | return Result.get() ? Result : E; | ||||||||
| 17817 | } | ||||||||
| 17818 | |||||||||
| 17819 | ExprResult Sema::ActOnConstantExpression(ExprResult Res) { | ||||||||
| 17820 | Res = CorrectDelayedTyposInExpr(Res); | ||||||||
| 17821 | |||||||||
| 17822 | if (!Res.isUsable()) | ||||||||
| 17823 | return Res; | ||||||||
| 17824 | |||||||||
| 17825 | // If a constant-expression is a reference to a variable where we delay | ||||||||
| 17826 | // deciding whether it is an odr-use, just assume we will apply the | ||||||||
| 17827 | // lvalue-to-rvalue conversion. In the one case where this doesn't happen | ||||||||
| 17828 | // (a non-type template argument), we have special handling anyway. | ||||||||
| 17829 | return CheckLValueToRValueConversionOperand(Res.get()); | ||||||||
| 17830 | } | ||||||||
| 17831 | |||||||||
| 17832 | void Sema::CleanupVarDeclMarking() { | ||||||||
| 17833 | // Iterate through a local copy in case MarkVarDeclODRUsed makes a recursive | ||||||||
| 17834 | // call. | ||||||||
| 17835 | MaybeODRUseExprSet LocalMaybeODRUseExprs; | ||||||||
| 17836 | std::swap(LocalMaybeODRUseExprs, MaybeODRUseExprs); | ||||||||
| 17837 | |||||||||
| 17838 | for (Expr *E : LocalMaybeODRUseExprs) { | ||||||||
| 17839 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||||||
| 17840 | MarkVarDeclODRUsed(cast<VarDecl>(DRE->getDecl()), | ||||||||
| 17841 | DRE->getLocation(), *this); | ||||||||
| 17842 | } else if (auto *ME = dyn_cast<MemberExpr>(E)) { | ||||||||
| 17843 | MarkVarDeclODRUsed(cast<VarDecl>(ME->getMemberDecl()), ME->getMemberLoc(), | ||||||||
| 17844 | *this); | ||||||||
| 17845 | } else if (auto *FP = dyn_cast<FunctionParmPackExpr>(E)) { | ||||||||
| 17846 | for (VarDecl *VD : *FP) | ||||||||
| 17847 | MarkVarDeclODRUsed(VD, FP->getParameterPackLocation(), *this); | ||||||||
| 17848 | } else { | ||||||||
| 17849 | llvm_unreachable("Unexpected expression")::llvm::llvm_unreachable_internal("Unexpected expression", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17849); | ||||||||
| 17850 | } | ||||||||
| 17851 | } | ||||||||
| 17852 | |||||||||
| 17853 | assert(MaybeODRUseExprs.empty() &&((MaybeODRUseExprs.empty() && "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?" ) ? static_cast<void> (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17854, __PRETTY_FUNCTION__)) | ||||||||
| 17854 | "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?")((MaybeODRUseExprs.empty() && "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?" ) ? static_cast<void> (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17854, __PRETTY_FUNCTION__)); | ||||||||
| 17855 | } | ||||||||
| 17856 | |||||||||
| 17857 | static void DoMarkVarDeclReferenced(Sema &SemaRef, SourceLocation Loc, | ||||||||
| 17858 | VarDecl *Var, Expr *E) { | ||||||||
| 17859 | assert((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) ||(((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E ) || isa<FunctionParmPackExpr>(E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? static_cast<void> (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17861, __PRETTY_FUNCTION__)) | ||||||||
| 17860 | isa<FunctionParmPackExpr>(E)) &&(((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E ) || isa<FunctionParmPackExpr>(E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? static_cast<void> (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17861, __PRETTY_FUNCTION__)) | ||||||||
| 17861 | "Invalid Expr argument to DoMarkVarDeclReferenced")(((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E ) || isa<FunctionParmPackExpr>(E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? static_cast<void> (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17861, __PRETTY_FUNCTION__)); | ||||||||
| 17862 | Var->setReferenced(); | ||||||||
| 17863 | |||||||||
| 17864 | if (Var->isInvalidDecl()) | ||||||||
| 17865 | return; | ||||||||
| 17866 | |||||||||
| 17867 | // Record a CUDA/HIP static device/constant variable if it is referenced | ||||||||
| 17868 | // by host code. This is done conservatively, when the variable is referenced | ||||||||
| 17869 | // in any of the following contexts: | ||||||||
| 17870 | // - a non-function context | ||||||||
| 17871 | // - a host function | ||||||||
| 17872 | // - a host device function | ||||||||
| 17873 | // This also requires the reference of the static device/constant variable by | ||||||||
| 17874 | // host code to be visible in the device compilation for the compiler to be | ||||||||
| 17875 | // able to externalize the static device/constant variable. | ||||||||
| 17876 | if ((Var->hasAttr<CUDADeviceAttr>() || Var->hasAttr<CUDAConstantAttr>()) && | ||||||||
| 17877 | Var->isFileVarDecl() && Var->getStorageClass() == SC_Static) { | ||||||||
| 17878 | auto *CurContext = SemaRef.CurContext; | ||||||||
| 17879 | if (!CurContext || !isa<FunctionDecl>(CurContext) || | ||||||||
| 17880 | cast<FunctionDecl>(CurContext)->hasAttr<CUDAHostAttr>() || | ||||||||
| 17881 | (!cast<FunctionDecl>(CurContext)->hasAttr<CUDADeviceAttr>() && | ||||||||
| 17882 | !cast<FunctionDecl>(CurContext)->hasAttr<CUDAGlobalAttr>())) | ||||||||
| 17883 | SemaRef.getASTContext().CUDAStaticDeviceVarReferencedByHost.insert(Var); | ||||||||
| 17884 | } | ||||||||
| 17885 | |||||||||
| 17886 | auto *MSI = Var->getMemberSpecializationInfo(); | ||||||||
| 17887 | TemplateSpecializationKind TSK = MSI ? MSI->getTemplateSpecializationKind() | ||||||||
| 17888 | : Var->getTemplateSpecializationKind(); | ||||||||
| 17889 | |||||||||
| 17890 | OdrUseContext OdrUse = isOdrUseContext(SemaRef); | ||||||||
| 17891 | bool UsableInConstantExpr = | ||||||||
| 17892 | Var->mightBeUsableInConstantExpressions(SemaRef.Context); | ||||||||
| 17893 | |||||||||
| 17894 | // C++20 [expr.const]p12: | ||||||||
| 17895 | // A variable [...] is needed for constant evaluation if it is [...] a | ||||||||
| 17896 | // variable whose name appears as a potentially constant evaluated | ||||||||
| 17897 | // expression that is either a contexpr variable or is of non-volatile | ||||||||
| 17898 | // const-qualified integral type or of reference type | ||||||||
| 17899 | bool NeededForConstantEvaluation = | ||||||||
| 17900 | isPotentiallyConstantEvaluatedContext(SemaRef) && UsableInConstantExpr; | ||||||||
| 17901 | |||||||||
| 17902 | bool NeedDefinition = | ||||||||
| 17903 | OdrUse == OdrUseContext::Used || NeededForConstantEvaluation; | ||||||||
| 17904 | |||||||||
| 17905 | VarTemplateSpecializationDecl *VarSpec = | ||||||||
| 17906 | dyn_cast<VarTemplateSpecializationDecl>(Var); | ||||||||
| 17907 | assert(!isa<VarTemplatePartialSpecializationDecl>(Var) &&((!isa<VarTemplatePartialSpecializationDecl>(Var) && "Can't instantiate a partial template specialization.") ? static_cast <void> (0) : __assert_fail ("!isa<VarTemplatePartialSpecializationDecl>(Var) && \"Can't instantiate a partial template specialization.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17908, __PRETTY_FUNCTION__)) | ||||||||
| 17908 | "Can't instantiate a partial template specialization.")((!isa<VarTemplatePartialSpecializationDecl>(Var) && "Can't instantiate a partial template specialization.") ? static_cast <void> (0) : __assert_fail ("!isa<VarTemplatePartialSpecializationDecl>(Var) && \"Can't instantiate a partial template specialization.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17908, __PRETTY_FUNCTION__)); | ||||||||
| 17909 | |||||||||
| 17910 | // If this might be a member specialization of a static data member, check | ||||||||
| 17911 | // the specialization is visible. We already did the checks for variable | ||||||||
| 17912 | // template specializations when we created them. | ||||||||
| 17913 | if (NeedDefinition && TSK != TSK_Undeclared && | ||||||||
| 17914 | !isa<VarTemplateSpecializationDecl>(Var)) | ||||||||
| 17915 | SemaRef.checkSpecializationVisibility(Loc, Var); | ||||||||
| 17916 | |||||||||
| 17917 | // Perform implicit instantiation of static data members, static data member | ||||||||
| 17918 | // templates of class templates, and variable template specializations. Delay | ||||||||
| 17919 | // instantiations of variable templates, except for those that could be used | ||||||||
| 17920 | // in a constant expression. | ||||||||
| 17921 | if (NeedDefinition && isTemplateInstantiation(TSK)) { | ||||||||
| 17922 | // Per C++17 [temp.explicit]p10, we may instantiate despite an explicit | ||||||||
| 17923 | // instantiation declaration if a variable is usable in a constant | ||||||||
| 17924 | // expression (among other cases). | ||||||||
| 17925 | bool TryInstantiating = | ||||||||
| 17926 | TSK == TSK_ImplicitInstantiation || | ||||||||
| 17927 | (TSK == TSK_ExplicitInstantiationDeclaration && UsableInConstantExpr); | ||||||||
| 17928 | |||||||||
| 17929 | if (TryInstantiating) { | ||||||||
| 17930 | SourceLocation PointOfInstantiation = | ||||||||
| 17931 | MSI ? MSI->getPointOfInstantiation() : Var->getPointOfInstantiation(); | ||||||||
| 17932 | bool FirstInstantiation = PointOfInstantiation.isInvalid(); | ||||||||
| 17933 | if (FirstInstantiation) { | ||||||||
| 17934 | PointOfInstantiation = Loc; | ||||||||
| 17935 | if (MSI) | ||||||||
| 17936 | MSI->setPointOfInstantiation(PointOfInstantiation); | ||||||||
| 17937 | else | ||||||||
| 17938 | Var->setTemplateSpecializationKind(TSK, PointOfInstantiation); | ||||||||
| 17939 | } | ||||||||
| 17940 | |||||||||
| 17941 | bool InstantiationDependent = false; | ||||||||
| 17942 | bool IsNonDependent = | ||||||||
| 17943 | VarSpec ? !TemplateSpecializationType::anyDependentTemplateArguments( | ||||||||
| 17944 | VarSpec->getTemplateArgsInfo(), InstantiationDependent) | ||||||||
| 17945 | : true; | ||||||||
| 17946 | |||||||||
| 17947 | // Do not instantiate specializations that are still type-dependent. | ||||||||
| 17948 | if (IsNonDependent) { | ||||||||
| 17949 | if (UsableInConstantExpr) { | ||||||||
| 17950 | // Do not defer instantiations of variables that could be used in a | ||||||||
| 17951 | // constant expression. | ||||||||
| 17952 | SemaRef.runWithSufficientStackSpace(PointOfInstantiation, [&] { | ||||||||
| 17953 | SemaRef.InstantiateVariableDefinition(PointOfInstantiation, Var); | ||||||||
| 17954 | }); | ||||||||
| 17955 | } else if (FirstInstantiation || | ||||||||
| 17956 | isa<VarTemplateSpecializationDecl>(Var)) { | ||||||||
| 17957 | // FIXME: For a specialization of a variable template, we don't | ||||||||
| 17958 | // distinguish between "declaration and type implicitly instantiated" | ||||||||
| 17959 | // and "implicit instantiation of definition requested", so we have | ||||||||
| 17960 | // no direct way to avoid enqueueing the pending instantiation | ||||||||
| 17961 | // multiple times. | ||||||||
| 17962 | SemaRef.PendingInstantiations | ||||||||
| 17963 | .push_back(std::make_pair(Var, PointOfInstantiation)); | ||||||||
| 17964 | } | ||||||||
| 17965 | } | ||||||||
| 17966 | } | ||||||||
| 17967 | } | ||||||||
| 17968 | |||||||||
| 17969 | // C++2a [basic.def.odr]p4: | ||||||||
| 17970 | // A variable x whose name appears as a potentially-evaluated expression e | ||||||||
| 17971 | // is odr-used by e unless | ||||||||
| 17972 | // -- x is a reference that is usable in constant expressions | ||||||||
| 17973 | // -- x is a variable of non-reference type that is usable in constant | ||||||||
| 17974 | // expressions and has no mutable subobjects [FIXME], and e is an | ||||||||
| 17975 | // element of the set of potential results of an expression of | ||||||||
| 17976 | // non-volatile-qualified non-class type to which the lvalue-to-rvalue | ||||||||
| 17977 | // conversion is applied | ||||||||
| 17978 | // -- x is a variable of non-reference type, and e is an element of the set | ||||||||
| 17979 | // of potential results of a discarded-value expression to which the | ||||||||
| 17980 | // lvalue-to-rvalue conversion is not applied [FIXME] | ||||||||
| 17981 | // | ||||||||
| 17982 | // We check the first part of the second bullet here, and | ||||||||
| 17983 | // Sema::CheckLValueToRValueConversionOperand deals with the second part. | ||||||||
| 17984 | // FIXME: To get the third bullet right, we need to delay this even for | ||||||||
| 17985 | // variables that are not usable in constant expressions. | ||||||||
| 17986 | |||||||||
| 17987 | // If we already know this isn't an odr-use, there's nothing more to do. | ||||||||
| 17988 | if (DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(E)) | ||||||||
| 17989 | if (DRE->isNonOdrUse()) | ||||||||
| 17990 | return; | ||||||||
| 17991 | if (MemberExpr *ME = dyn_cast_or_null<MemberExpr>(E)) | ||||||||
| 17992 | if (ME->isNonOdrUse()) | ||||||||
| 17993 | return; | ||||||||
| 17994 | |||||||||
| 17995 | switch (OdrUse) { | ||||||||
| 17996 | case OdrUseContext::None: | ||||||||
| 17997 | assert((!E || isa<FunctionParmPackExpr>(E)) &&(((!E || isa<FunctionParmPackExpr>(E)) && "missing non-odr-use marking for unevaluated decl ref" ) ? static_cast<void> (0) : __assert_fail ("(!E || isa<FunctionParmPackExpr>(E)) && \"missing non-odr-use marking for unevaluated decl ref\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17998, __PRETTY_FUNCTION__)) | ||||||||
| 17998 | "missing non-odr-use marking for unevaluated decl ref")(((!E || isa<FunctionParmPackExpr>(E)) && "missing non-odr-use marking for unevaluated decl ref" ) ? static_cast<void> (0) : __assert_fail ("(!E || isa<FunctionParmPackExpr>(E)) && \"missing non-odr-use marking for unevaluated decl ref\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 17998, __PRETTY_FUNCTION__)); | ||||||||
| 17999 | break; | ||||||||
| 18000 | |||||||||
| 18001 | case OdrUseContext::FormallyOdrUsed: | ||||||||
| 18002 | // FIXME: Ignoring formal odr-uses results in incorrect lambda capture | ||||||||
| 18003 | // behavior. | ||||||||
| 18004 | break; | ||||||||
| 18005 | |||||||||
| 18006 | case OdrUseContext::Used: | ||||||||
| 18007 | // If we might later find that this expression isn't actually an odr-use, | ||||||||
| 18008 | // delay the marking. | ||||||||
| 18009 | if (E && Var->isUsableInConstantExpressions(SemaRef.Context)) | ||||||||
| 18010 | SemaRef.MaybeODRUseExprs.insert(E); | ||||||||
| 18011 | else | ||||||||
| 18012 | MarkVarDeclODRUsed(Var, Loc, SemaRef); | ||||||||
| 18013 | break; | ||||||||
| 18014 | |||||||||
| 18015 | case OdrUseContext::Dependent: | ||||||||
| 18016 | // If this is a dependent context, we don't need to mark variables as | ||||||||
| 18017 | // odr-used, but we may still need to track them for lambda capture. | ||||||||
| 18018 | // FIXME: Do we also need to do this inside dependent typeid expressions | ||||||||
| 18019 | // (which are modeled as unevaluated at this point)? | ||||||||
| 18020 | const bool RefersToEnclosingScope = | ||||||||
| 18021 | (SemaRef.CurContext != Var->getDeclContext() && | ||||||||
| 18022 | Var->getDeclContext()->isFunctionOrMethod() && Var->hasLocalStorage()); | ||||||||
| 18023 | if (RefersToEnclosingScope) { | ||||||||
| 18024 | LambdaScopeInfo *const LSI = | ||||||||
| 18025 | SemaRef.getCurLambda(/*IgnoreNonLambdaCapturingScope=*/true); | ||||||||
| 18026 | if (LSI && (!LSI->CallOperator || | ||||||||
| 18027 | !LSI->CallOperator->Encloses(Var->getDeclContext()))) { | ||||||||
| 18028 | // If a variable could potentially be odr-used, defer marking it so | ||||||||
| 18029 | // until we finish analyzing the full expression for any | ||||||||
| 18030 | // lvalue-to-rvalue | ||||||||
| 18031 | // or discarded value conversions that would obviate odr-use. | ||||||||
| 18032 | // Add it to the list of potential captures that will be analyzed | ||||||||
| 18033 | // later (ActOnFinishFullExpr) for eventual capture and odr-use marking | ||||||||
| 18034 | // unless the variable is a reference that was initialized by a constant | ||||||||
| 18035 | // expression (this will never need to be captured or odr-used). | ||||||||
| 18036 | // | ||||||||
| 18037 | // FIXME: We can simplify this a lot after implementing P0588R1. | ||||||||
| 18038 | assert(E && "Capture variable should be used in an expression.")((E && "Capture variable should be used in an expression." ) ? static_cast<void> (0) : __assert_fail ("E && \"Capture variable should be used in an expression.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18038, __PRETTY_FUNCTION__)); | ||||||||
| 18039 | if (!Var->getType()->isReferenceType() || | ||||||||
| 18040 | !Var->isUsableInConstantExpressions(SemaRef.Context)) | ||||||||
| 18041 | LSI->addPotentialCapture(E->IgnoreParens()); | ||||||||
| 18042 | } | ||||||||
| 18043 | } | ||||||||
| 18044 | break; | ||||||||
| 18045 | } | ||||||||
| 18046 | } | ||||||||
| 18047 | |||||||||
| 18048 | /// Mark a variable referenced, and check whether it is odr-used | ||||||||
| 18049 | /// (C++ [basic.def.odr]p2, C99 6.9p3). Note that this should not be | ||||||||
| 18050 | /// used directly for normal expressions referring to VarDecl. | ||||||||
| 18051 | void Sema::MarkVariableReferenced(SourceLocation Loc, VarDecl *Var) { | ||||||||
| 18052 | DoMarkVarDeclReferenced(*this, Loc, Var, nullptr); | ||||||||
| 18053 | } | ||||||||
| 18054 | |||||||||
| 18055 | static void MarkExprReferenced(Sema &SemaRef, SourceLocation Loc, | ||||||||
| 18056 | Decl *D, Expr *E, bool MightBeOdrUse) { | ||||||||
| 18057 | if (SemaRef.isInOpenMPDeclareTargetContext()) | ||||||||
| 18058 | SemaRef.checkDeclIsAllowedInOpenMPTarget(E, D); | ||||||||
| 18059 | |||||||||
| 18060 | if (VarDecl *Var = dyn_cast<VarDecl>(D)) { | ||||||||
| 18061 | DoMarkVarDeclReferenced(SemaRef, Loc, Var, E); | ||||||||
| 18062 | return; | ||||||||
| 18063 | } | ||||||||
| 18064 | |||||||||
| 18065 | SemaRef.MarkAnyDeclReferenced(Loc, D, MightBeOdrUse); | ||||||||
| 18066 | |||||||||
| 18067 | // If this is a call to a method via a cast, also mark the method in the | ||||||||
| 18068 | // derived class used in case codegen can devirtualize the call. | ||||||||
| 18069 | const MemberExpr *ME = dyn_cast<MemberExpr>(E); | ||||||||
| 18070 | if (!ME) | ||||||||
| 18071 | return; | ||||||||
| 18072 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ME->getMemberDecl()); | ||||||||
| 18073 | if (!MD) | ||||||||
| 18074 | return; | ||||||||
| 18075 | // Only attempt to devirtualize if this is truly a virtual call. | ||||||||
| 18076 | bool IsVirtualCall = MD->isVirtual() && | ||||||||
| 18077 | ME->performsVirtualDispatch(SemaRef.getLangOpts()); | ||||||||
| 18078 | if (!IsVirtualCall) | ||||||||
| 18079 | return; | ||||||||
| 18080 | |||||||||
| 18081 | // If it's possible to devirtualize the call, mark the called function | ||||||||
| 18082 | // referenced. | ||||||||
| 18083 | CXXMethodDecl *DM = MD->getDevirtualizedMethod( | ||||||||
| 18084 | ME->getBase(), SemaRef.getLangOpts().AppleKext); | ||||||||
| 18085 | if (DM) | ||||||||
| 18086 | SemaRef.MarkAnyDeclReferenced(Loc, DM, MightBeOdrUse); | ||||||||
| 18087 | } | ||||||||
| 18088 | |||||||||
| 18089 | /// Perform reference-marking and odr-use handling for a DeclRefExpr. | ||||||||
| 18090 | void Sema::MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base) { | ||||||||
| 18091 | // TODO: update this with DR# once a defect report is filed. | ||||||||
| 18092 | // C++11 defect. The address of a pure member should not be an ODR use, even | ||||||||
| 18093 | // if it's a qualified reference. | ||||||||
| 18094 | bool OdrUse = true; | ||||||||
| 18095 | if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(E->getDecl())) | ||||||||
| 18096 | if (Method->isVirtual() && | ||||||||
| 18097 | !Method->getDevirtualizedMethod(Base, getLangOpts().AppleKext)) | ||||||||
| 18098 | OdrUse = false; | ||||||||
| 18099 | |||||||||
| 18100 | if (auto *FD = dyn_cast<FunctionDecl>(E->getDecl())) | ||||||||
| 18101 | if (!isConstantEvaluated() && FD->isConsteval() && | ||||||||
| 18102 | !RebuildingImmediateInvocation) | ||||||||
| 18103 | ExprEvalContexts.back().ReferenceToConsteval.insert(E); | ||||||||
| 18104 | MarkExprReferenced(*this, E->getLocation(), E->getDecl(), E, OdrUse); | ||||||||
| 18105 | } | ||||||||
| 18106 | |||||||||
| 18107 | /// Perform reference-marking and odr-use handling for a MemberExpr. | ||||||||
| 18108 | void Sema::MarkMemberReferenced(MemberExpr *E) { | ||||||||
| 18109 | // C++11 [basic.def.odr]p2: | ||||||||
| 18110 | // A non-overloaded function whose name appears as a potentially-evaluated | ||||||||
| 18111 | // expression or a member of a set of candidate functions, if selected by | ||||||||
| 18112 | // overload resolution when referred to from a potentially-evaluated | ||||||||
| 18113 | // expression, is odr-used, unless it is a pure virtual function and its | ||||||||
| 18114 | // name is not explicitly qualified. | ||||||||
| 18115 | bool MightBeOdrUse = true; | ||||||||
| 18116 | if (E->performsVirtualDispatch(getLangOpts())) { | ||||||||
| 18117 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(E->getMemberDecl())) | ||||||||
| 18118 | if (Method->isPure()) | ||||||||
| 18119 | MightBeOdrUse = false; | ||||||||
| 18120 | } | ||||||||
| 18121 | SourceLocation Loc = | ||||||||
| 18122 | E->getMemberLoc().isValid() ? E->getMemberLoc() : E->getBeginLoc(); | ||||||||
| 18123 | MarkExprReferenced(*this, Loc, E->getMemberDecl(), E, MightBeOdrUse); | ||||||||
| 18124 | } | ||||||||
| 18125 | |||||||||
| 18126 | /// Perform reference-marking and odr-use handling for a FunctionParmPackExpr. | ||||||||
| 18127 | void Sema::MarkFunctionParmPackReferenced(FunctionParmPackExpr *E) { | ||||||||
| 18128 | for (VarDecl *VD : *E) | ||||||||
| 18129 | MarkExprReferenced(*this, E->getParameterPackLocation(), VD, E, true); | ||||||||
| 18130 | } | ||||||||
| 18131 | |||||||||
| 18132 | /// Perform marking for a reference to an arbitrary declaration. It | ||||||||
| 18133 | /// marks the declaration referenced, and performs odr-use checking for | ||||||||
| 18134 | /// functions and variables. This method should not be used when building a | ||||||||
| 18135 | /// normal expression which refers to a variable. | ||||||||
| 18136 | void Sema::MarkAnyDeclReferenced(SourceLocation Loc, Decl *D, | ||||||||
| 18137 | bool MightBeOdrUse) { | ||||||||
| 18138 | if (MightBeOdrUse) { | ||||||||
| 18139 | if (auto *VD = dyn_cast<VarDecl>(D)) { | ||||||||
| 18140 | MarkVariableReferenced(Loc, VD); | ||||||||
| 18141 | return; | ||||||||
| 18142 | } | ||||||||
| 18143 | } | ||||||||
| 18144 | if (auto *FD = dyn_cast<FunctionDecl>(D)) { | ||||||||
| 18145 | MarkFunctionReferenced(Loc, FD, MightBeOdrUse); | ||||||||
| 18146 | return; | ||||||||
| 18147 | } | ||||||||
| 18148 | D->setReferenced(); | ||||||||
| 18149 | } | ||||||||
| 18150 | |||||||||
| 18151 | namespace { | ||||||||
| 18152 | // Mark all of the declarations used by a type as referenced. | ||||||||
| 18153 | // FIXME: Not fully implemented yet! We need to have a better understanding | ||||||||
| 18154 | // of when we're entering a context we should not recurse into. | ||||||||
| 18155 | // FIXME: This is and EvaluatedExprMarker are more-or-less equivalent to | ||||||||
| 18156 | // TreeTransforms rebuilding the type in a new context. Rather than | ||||||||
| 18157 | // duplicating the TreeTransform logic, we should consider reusing it here. | ||||||||
| 18158 | // Currently that causes problems when rebuilding LambdaExprs. | ||||||||
| 18159 | class MarkReferencedDecls : public RecursiveASTVisitor<MarkReferencedDecls> { | ||||||||
| 18160 | Sema &S; | ||||||||
| 18161 | SourceLocation Loc; | ||||||||
| 18162 | |||||||||
| 18163 | public: | ||||||||
| 18164 | typedef RecursiveASTVisitor<MarkReferencedDecls> Inherited; | ||||||||
| 18165 | |||||||||
| 18166 | MarkReferencedDecls(Sema &S, SourceLocation Loc) : S(S), Loc(Loc) { } | ||||||||
| 18167 | |||||||||
| 18168 | bool TraverseTemplateArgument(const TemplateArgument &Arg); | ||||||||
| 18169 | }; | ||||||||
| 18170 | } | ||||||||
| 18171 | |||||||||
| 18172 | bool MarkReferencedDecls::TraverseTemplateArgument( | ||||||||
| 18173 | const TemplateArgument &Arg) { | ||||||||
| 18174 | { | ||||||||
| 18175 | // A non-type template argument is a constant-evaluated context. | ||||||||
| 18176 | EnterExpressionEvaluationContext Evaluated( | ||||||||
| 18177 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | ||||||||
| 18178 | if (Arg.getKind() == TemplateArgument::Declaration) { | ||||||||
| 18179 | if (Decl *D = Arg.getAsDecl()) | ||||||||
| 18180 | S.MarkAnyDeclReferenced(Loc, D, true); | ||||||||
| 18181 | } else if (Arg.getKind() == TemplateArgument::Expression) { | ||||||||
| 18182 | S.MarkDeclarationsReferencedInExpr(Arg.getAsExpr(), false); | ||||||||
| 18183 | } | ||||||||
| 18184 | } | ||||||||
| 18185 | |||||||||
| 18186 | return Inherited::TraverseTemplateArgument(Arg); | ||||||||
| 18187 | } | ||||||||
| 18188 | |||||||||
| 18189 | void Sema::MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T) { | ||||||||
| 18190 | MarkReferencedDecls Marker(*this, Loc); | ||||||||
| 18191 | Marker.TraverseType(T); | ||||||||
| 18192 | } | ||||||||
| 18193 | |||||||||
| 18194 | namespace { | ||||||||
| 18195 | /// Helper class that marks all of the declarations referenced by | ||||||||
| 18196 | /// potentially-evaluated subexpressions as "referenced". | ||||||||
| 18197 | class EvaluatedExprMarker : public UsedDeclVisitor<EvaluatedExprMarker> { | ||||||||
| 18198 | public: | ||||||||
| 18199 | typedef UsedDeclVisitor<EvaluatedExprMarker> Inherited; | ||||||||
| 18200 | bool SkipLocalVariables; | ||||||||
| 18201 | |||||||||
| 18202 | EvaluatedExprMarker(Sema &S, bool SkipLocalVariables) | ||||||||
| 18203 | : Inherited(S), SkipLocalVariables(SkipLocalVariables) {} | ||||||||
| 18204 | |||||||||
| 18205 | void visitUsedDecl(SourceLocation Loc, Decl *D) { | ||||||||
| 18206 | S.MarkFunctionReferenced(Loc, cast<FunctionDecl>(D)); | ||||||||
| 18207 | } | ||||||||
| 18208 | |||||||||
| 18209 | void VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
| 18210 | // If we were asked not to visit local variables, don't. | ||||||||
| 18211 | if (SkipLocalVariables) { | ||||||||
| 18212 | if (VarDecl *VD = dyn_cast<VarDecl>(E->getDecl())) | ||||||||
| 18213 | if (VD->hasLocalStorage()) | ||||||||
| 18214 | return; | ||||||||
| 18215 | } | ||||||||
| 18216 | S.MarkDeclRefReferenced(E); | ||||||||
| 18217 | } | ||||||||
| 18218 | |||||||||
| 18219 | void VisitMemberExpr(MemberExpr *E) { | ||||||||
| 18220 | S.MarkMemberReferenced(E); | ||||||||
| 18221 | Visit(E->getBase()); | ||||||||
| 18222 | } | ||||||||
| 18223 | }; | ||||||||
| 18224 | } // namespace | ||||||||
| 18225 | |||||||||
| 18226 | /// Mark any declarations that appear within this expression or any | ||||||||
| 18227 | /// potentially-evaluated subexpressions as "referenced". | ||||||||
| 18228 | /// | ||||||||
| 18229 | /// \param SkipLocalVariables If true, don't mark local variables as | ||||||||
| 18230 | /// 'referenced'. | ||||||||
| 18231 | void Sema::MarkDeclarationsReferencedInExpr(Expr *E, | ||||||||
| 18232 | bool SkipLocalVariables) { | ||||||||
| 18233 | EvaluatedExprMarker(*this, SkipLocalVariables).Visit(E); | ||||||||
| 18234 | } | ||||||||
| 18235 | |||||||||
| 18236 | /// Emit a diagnostic that describes an effect on the run-time behavior | ||||||||
| 18237 | /// of the program being compiled. | ||||||||
| 18238 | /// | ||||||||
| 18239 | /// This routine emits the given diagnostic when the code currently being | ||||||||
| 18240 | /// type-checked is "potentially evaluated", meaning that there is a | ||||||||
| 18241 | /// possibility that the code will actually be executable. Code in sizeof() | ||||||||
| 18242 | /// expressions, code used only during overload resolution, etc., are not | ||||||||
| 18243 | /// potentially evaluated. This routine will suppress such diagnostics or, | ||||||||
| 18244 | /// in the absolutely nutty case of potentially potentially evaluated | ||||||||
| 18245 | /// expressions (C++ typeid), queue the diagnostic to potentially emit it | ||||||||
| 18246 | /// later. | ||||||||
| 18247 | /// | ||||||||
| 18248 | /// This routine should be used for all diagnostics that describe the run-time | ||||||||
| 18249 | /// behavior of a program, such as passing a non-POD value through an ellipsis. | ||||||||
| 18250 | /// Failure to do so will likely result in spurious diagnostics or failures | ||||||||
| 18251 | /// during overload resolution or within sizeof/alignof/typeof/typeid. | ||||||||
| 18252 | bool Sema::DiagRuntimeBehavior(SourceLocation Loc, ArrayRef<const Stmt*> Stmts, | ||||||||
| 18253 | const PartialDiagnostic &PD) { | ||||||||
| 18254 | switch (ExprEvalContexts.back().Context) { | ||||||||
| 18255 | case ExpressionEvaluationContext::Unevaluated: | ||||||||
| 18256 | case ExpressionEvaluationContext::UnevaluatedList: | ||||||||
| 18257 | case ExpressionEvaluationContext::UnevaluatedAbstract: | ||||||||
| 18258 | case ExpressionEvaluationContext::DiscardedStatement: | ||||||||
| 18259 | // The argument will never be evaluated, so don't complain. | ||||||||
| 18260 | break; | ||||||||
| 18261 | |||||||||
| 18262 | case ExpressionEvaluationContext::ConstantEvaluated: | ||||||||
| 18263 | // Relevant diagnostics should be produced by constant evaluation. | ||||||||
| 18264 | break; | ||||||||
| 18265 | |||||||||
| 18266 | case ExpressionEvaluationContext::PotentiallyEvaluated: | ||||||||
| 18267 | case ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||||||
| 18268 | if (!Stmts.empty() && getCurFunctionOrMethodDecl()) { | ||||||||
| 18269 | FunctionScopes.back()->PossiblyUnreachableDiags. | ||||||||
| 18270 | push_back(sema::PossiblyUnreachableDiag(PD, Loc, Stmts)); | ||||||||
| 18271 | return true; | ||||||||
| 18272 | } | ||||||||
| 18273 | |||||||||
| 18274 | // The initializer of a constexpr variable or of the first declaration of a | ||||||||
| 18275 | // static data member is not syntactically a constant evaluated constant, | ||||||||
| 18276 | // but nonetheless is always required to be a constant expression, so we | ||||||||
| 18277 | // can skip diagnosing. | ||||||||
| 18278 | // FIXME: Using the mangling context here is a hack. | ||||||||
| 18279 | if (auto *VD = dyn_cast_or_null<VarDecl>( | ||||||||
| 18280 | ExprEvalContexts.back().ManglingContextDecl)) { | ||||||||
| 18281 | if (VD->isConstexpr() || | ||||||||
| 18282 | (VD->isStaticDataMember() && VD->isFirstDecl() && !VD->isInline())) | ||||||||
| 18283 | break; | ||||||||
| 18284 | // FIXME: For any other kind of variable, we should build a CFG for its | ||||||||
| 18285 | // initializer and check whether the context in question is reachable. | ||||||||
| 18286 | } | ||||||||
| 18287 | |||||||||
| 18288 | Diag(Loc, PD); | ||||||||
| 18289 | return true; | ||||||||
| 18290 | } | ||||||||
| 18291 | |||||||||
| 18292 | return false; | ||||||||
| 18293 | } | ||||||||
| 18294 | |||||||||
| 18295 | bool Sema::DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, | ||||||||
| 18296 | const PartialDiagnostic &PD) { | ||||||||
| 18297 | return DiagRuntimeBehavior( | ||||||||
| 18298 | Loc, Statement ? llvm::makeArrayRef(Statement) : llvm::None, PD); | ||||||||
| 18299 | } | ||||||||
| 18300 | |||||||||
| 18301 | bool Sema::CheckCallReturnType(QualType ReturnType, SourceLocation Loc, | ||||||||
| 18302 | CallExpr *CE, FunctionDecl *FD) { | ||||||||
| 18303 | if (ReturnType->isVoidType() || !ReturnType->isIncompleteType()) | ||||||||
| 18304 | return false; | ||||||||
| 18305 | |||||||||
| 18306 | // If we're inside a decltype's expression, don't check for a valid return | ||||||||
| 18307 | // type or construct temporaries until we know whether this is the last call. | ||||||||
| 18308 | if (ExprEvalContexts.back().ExprContext == | ||||||||
| 18309 | ExpressionEvaluationContextRecord::EK_Decltype) { | ||||||||
| 18310 | ExprEvalContexts.back().DelayedDecltypeCalls.push_back(CE); | ||||||||
| 18311 | return false; | ||||||||
| 18312 | } | ||||||||
| 18313 | |||||||||
| 18314 | class CallReturnIncompleteDiagnoser : public TypeDiagnoser { | ||||||||
| 18315 | FunctionDecl *FD; | ||||||||
| 18316 | CallExpr *CE; | ||||||||
| 18317 | |||||||||
| 18318 | public: | ||||||||
| 18319 | CallReturnIncompleteDiagnoser(FunctionDecl *FD, CallExpr *CE) | ||||||||
| 18320 | : FD(FD), CE(CE) { } | ||||||||
| 18321 | |||||||||
| 18322 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { | ||||||||
| 18323 | if (!FD) { | ||||||||
| 18324 | S.Diag(Loc, diag::err_call_incomplete_return) | ||||||||
| 18325 | << T << CE->getSourceRange(); | ||||||||
| 18326 | return; | ||||||||
| 18327 | } | ||||||||
| 18328 | |||||||||
| 18329 | S.Diag(Loc, diag::err_call_function_incomplete_return) | ||||||||
| 18330 | << CE->getSourceRange() << FD << T; | ||||||||
| 18331 | S.Diag(FD->getLocation(), diag::note_entity_declared_at) | ||||||||
| 18332 | << FD->getDeclName(); | ||||||||
| 18333 | } | ||||||||
| 18334 | } Diagnoser(FD, CE); | ||||||||
| 18335 | |||||||||
| 18336 | if (RequireCompleteType(Loc, ReturnType, Diagnoser)) | ||||||||
| 18337 | return true; | ||||||||
| 18338 | |||||||||
| 18339 | return false; | ||||||||
| 18340 | } | ||||||||
| 18341 | |||||||||
| 18342 | // Diagnose the s/=/==/ and s/\|=/!=/ typos. Note that adding parentheses | ||||||||
| 18343 | // will prevent this condition from triggering, which is what we want. | ||||||||
| 18344 | void Sema::DiagnoseAssignmentAsCondition(Expr *E) { | ||||||||
| 18345 | SourceLocation Loc; | ||||||||
| 18346 | |||||||||
| 18347 | unsigned diagnostic = diag::warn_condition_is_assignment; | ||||||||
| 18348 | bool IsOrAssign = false; | ||||||||
| 18349 | |||||||||
| 18350 | if (BinaryOperator *Op = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 18351 | if (Op->getOpcode() != BO_Assign && Op->getOpcode() != BO_OrAssign) | ||||||||
| 18352 | return; | ||||||||
| 18353 | |||||||||
| 18354 | IsOrAssign = Op->getOpcode() == BO_OrAssign; | ||||||||
| 18355 | |||||||||
| 18356 | // Greylist some idioms by putting them into a warning subcategory. | ||||||||
| 18357 | if (ObjCMessageExpr *ME | ||||||||
| 18358 | = dyn_cast<ObjCMessageExpr>(Op->getRHS()->IgnoreParenCasts())) { | ||||||||
| 18359 | Selector Sel = ME->getSelector(); | ||||||||
| 18360 | |||||||||
| 18361 | // self = [<foo> init...] | ||||||||
| 18362 | if (isSelfExpr(Op->getLHS()) && ME->getMethodFamily() == OMF_init) | ||||||||
| 18363 | diagnostic = diag::warn_condition_is_idiomatic_assignment; | ||||||||
| 18364 | |||||||||
| 18365 | // <foo> = [<bar> nextObject] | ||||||||
| 18366 | else if (Sel.isUnarySelector() && Sel.getNameForSlot(0) == "nextObject") | ||||||||
| 18367 | diagnostic = diag::warn_condition_is_idiomatic_assignment; | ||||||||
| 18368 | } | ||||||||
| 18369 | |||||||||
| 18370 | Loc = Op->getOperatorLoc(); | ||||||||
| 18371 | } else if (CXXOperatorCallExpr *Op = dyn_cast<CXXOperatorCallExpr>(E)) { | ||||||||
| 18372 | if (Op->getOperator() != OO_Equal && Op->getOperator() != OO_PipeEqual) | ||||||||
| 18373 | return; | ||||||||
| 18374 | |||||||||
| 18375 | IsOrAssign = Op->getOperator() == OO_PipeEqual; | ||||||||
| 18376 | Loc = Op->getOperatorLoc(); | ||||||||
| 18377 | } else if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(E)) | ||||||||
| 18378 | return DiagnoseAssignmentAsCondition(POE->getSyntacticForm()); | ||||||||
| 18379 | else { | ||||||||
| 18380 | // Not an assignment. | ||||||||
| 18381 | return; | ||||||||
| 18382 | } | ||||||||
| 18383 | |||||||||
| 18384 | Diag(Loc, diagnostic) << E->getSourceRange(); | ||||||||
| 18385 | |||||||||
| 18386 | SourceLocation Open = E->getBeginLoc(); | ||||||||
| 18387 | SourceLocation Close = getLocForEndOfToken(E->getSourceRange().getEnd()); | ||||||||
| 18388 | Diag(Loc, diag::note_condition_assign_silence) | ||||||||
| 18389 | << FixItHint::CreateInsertion(Open, "(") | ||||||||
| 18390 | << FixItHint::CreateInsertion(Close, ")"); | ||||||||
| 18391 | |||||||||
| 18392 | if (IsOrAssign) | ||||||||
| 18393 | Diag(Loc, diag::note_condition_or_assign_to_comparison) | ||||||||
| 18394 | << FixItHint::CreateReplacement(Loc, "!="); | ||||||||
| 18395 | else | ||||||||
| 18396 | Diag(Loc, diag::note_condition_assign_to_comparison) | ||||||||
| 18397 | << FixItHint::CreateReplacement(Loc, "=="); | ||||||||
| 18398 | } | ||||||||
| 18399 | |||||||||
| 18400 | /// Redundant parentheses over an equality comparison can indicate | ||||||||
| 18401 | /// that the user intended an assignment used as condition. | ||||||||
| 18402 | void Sema::DiagnoseEqualityWithExtraParens(ParenExpr *ParenE) { | ||||||||
| 18403 | // Don't warn if the parens came from a macro. | ||||||||
| 18404 | SourceLocation parenLoc = ParenE->getBeginLoc(); | ||||||||
| 18405 | if (parenLoc.isInvalid() || parenLoc.isMacroID()) | ||||||||
| 18406 | return; | ||||||||
| 18407 | // Don't warn for dependent expressions. | ||||||||
| 18408 | if (ParenE->isTypeDependent()) | ||||||||
| 18409 | return; | ||||||||
| 18410 | |||||||||
| 18411 | Expr *E = ParenE->IgnoreParens(); | ||||||||
| 18412 | |||||||||
| 18413 | if (BinaryOperator *opE = dyn_cast<BinaryOperator>(E)) | ||||||||
| 18414 | if (opE->getOpcode() == BO_EQ && | ||||||||
| 18415 | opE->getLHS()->IgnoreParenImpCasts()->isModifiableLvalue(Context) | ||||||||
| 18416 | == Expr::MLV_Valid) { | ||||||||
| 18417 | SourceLocation Loc = opE->getOperatorLoc(); | ||||||||
| 18418 | |||||||||
| 18419 | Diag(Loc, diag::warn_equality_with_extra_parens) << E->getSourceRange(); | ||||||||
| 18420 | SourceRange ParenERange = ParenE->getSourceRange(); | ||||||||
| 18421 | Diag(Loc, diag::note_equality_comparison_silence) | ||||||||
| 18422 | << FixItHint::CreateRemoval(ParenERange.getBegin()) | ||||||||
| 18423 | << FixItHint::CreateRemoval(ParenERange.getEnd()); | ||||||||
| 18424 | Diag(Loc, diag::note_equality_comparison_to_assign) | ||||||||
| 18425 | << FixItHint::CreateReplacement(Loc, "="); | ||||||||
| 18426 | } | ||||||||
| 18427 | } | ||||||||
| 18428 | |||||||||
| 18429 | ExprResult Sema::CheckBooleanCondition(SourceLocation Loc, Expr *E, | ||||||||
| 18430 | bool IsConstexpr) { | ||||||||
| 18431 | DiagnoseAssignmentAsCondition(E); | ||||||||
| 18432 | if (ParenExpr *parenE = dyn_cast<ParenExpr>(E)) | ||||||||
| 18433 | DiagnoseEqualityWithExtraParens(parenE); | ||||||||
| 18434 | |||||||||
| 18435 | ExprResult result = CheckPlaceholderExpr(E); | ||||||||
| 18436 | if (result.isInvalid()) return ExprError(); | ||||||||
| 18437 | E = result.get(); | ||||||||
| 18438 | |||||||||
| 18439 | if (!E->isTypeDependent()) { | ||||||||
| 18440 | if (getLangOpts().CPlusPlus) | ||||||||
| 18441 | return CheckCXXBooleanCondition(E, IsConstexpr); // C++ 6.4p4 | ||||||||
| 18442 | |||||||||
| 18443 | ExprResult ERes = DefaultFunctionArrayLvalueConversion(E); | ||||||||
| 18444 | if (ERes.isInvalid()) | ||||||||
| 18445 | return ExprError(); | ||||||||
| 18446 | E = ERes.get(); | ||||||||
| 18447 | |||||||||
| 18448 | QualType T = E->getType(); | ||||||||
| 18449 | if (!T->isScalarType()) { // C99 6.8.4.1p1 | ||||||||
| 18450 | Diag(Loc, diag::err_typecheck_statement_requires_scalar) | ||||||||
| 18451 | << T << E->getSourceRange(); | ||||||||
| 18452 | return ExprError(); | ||||||||
| 18453 | } | ||||||||
| 18454 | CheckBoolLikeConversion(E, Loc); | ||||||||
| 18455 | } | ||||||||
| 18456 | |||||||||
| 18457 | return E; | ||||||||
| 18458 | } | ||||||||
| 18459 | |||||||||
| 18460 | Sema::ConditionResult Sema::ActOnCondition(Scope *S, SourceLocation Loc, | ||||||||
| 18461 | Expr *SubExpr, ConditionKind CK) { | ||||||||
| 18462 | // Empty conditions are valid in for-statements. | ||||||||
| 18463 | if (!SubExpr) | ||||||||
| 18464 | return ConditionResult(); | ||||||||
| 18465 | |||||||||
| 18466 | ExprResult Cond; | ||||||||
| 18467 | switch (CK) { | ||||||||
| 18468 | case ConditionKind::Boolean: | ||||||||
| 18469 | Cond = CheckBooleanCondition(Loc, SubExpr); | ||||||||
| 18470 | break; | ||||||||
| 18471 | |||||||||
| 18472 | case ConditionKind::ConstexprIf: | ||||||||
| 18473 | Cond = CheckBooleanCondition(Loc, SubExpr, true); | ||||||||
| 18474 | break; | ||||||||
| 18475 | |||||||||
| 18476 | case ConditionKind::Switch: | ||||||||
| 18477 | Cond = CheckSwitchCondition(Loc, SubExpr); | ||||||||
| 18478 | break; | ||||||||
| 18479 | } | ||||||||
| 18480 | if (Cond.isInvalid()) { | ||||||||
| 18481 | Cond = CreateRecoveryExpr(SubExpr->getBeginLoc(), SubExpr->getEndLoc(), | ||||||||
| 18482 | {SubExpr}); | ||||||||
| 18483 | if (!Cond.get()) | ||||||||
| 18484 | return ConditionError(); | ||||||||
| 18485 | } | ||||||||
| 18486 | // FIXME: FullExprArg doesn't have an invalid bit, so check nullness instead. | ||||||||
| 18487 | FullExprArg FullExpr = MakeFullExpr(Cond.get(), Loc); | ||||||||
| 18488 | if (!FullExpr.get()) | ||||||||
| 18489 | return ConditionError(); | ||||||||
| 18490 | |||||||||
| 18491 | return ConditionResult(*this, nullptr, FullExpr, | ||||||||
| 18492 | CK == ConditionKind::ConstexprIf); | ||||||||
| 18493 | } | ||||||||
| 18494 | |||||||||
| 18495 | namespace { | ||||||||
| 18496 | /// A visitor for rebuilding a call to an __unknown_any expression | ||||||||
| 18497 | /// to have an appropriate type. | ||||||||
| 18498 | struct RebuildUnknownAnyFunction | ||||||||
| 18499 | : StmtVisitor<RebuildUnknownAnyFunction, ExprResult> { | ||||||||
| 18500 | |||||||||
| 18501 | Sema &S; | ||||||||
| 18502 | |||||||||
| 18503 | RebuildUnknownAnyFunction(Sema &S) : S(S) {} | ||||||||
| 18504 | |||||||||
| 18505 | ExprResult VisitStmt(Stmt *S) { | ||||||||
| 18506 | llvm_unreachable("unexpected statement!")::llvm::llvm_unreachable_internal("unexpected statement!", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18506); | ||||||||
| 18507 | } | ||||||||
| 18508 | |||||||||
| 18509 | ExprResult VisitExpr(Expr *E) { | ||||||||
| 18510 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_call) | ||||||||
| 18511 | << E->getSourceRange(); | ||||||||
| 18512 | return ExprError(); | ||||||||
| 18513 | } | ||||||||
| 18514 | |||||||||
| 18515 | /// Rebuild an expression which simply semantically wraps another | ||||||||
| 18516 | /// expression which it shares the type and value kind of. | ||||||||
| 18517 | template <class T> ExprResult rebuildSugarExpr(T *E) { | ||||||||
| 18518 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
| 18519 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
| 18520 | |||||||||
| 18521 | Expr *SubExpr = SubResult.get(); | ||||||||
| 18522 | E->setSubExpr(SubExpr); | ||||||||
| 18523 | E->setType(SubExpr->getType()); | ||||||||
| 18524 | E->setValueKind(SubExpr->getValueKind()); | ||||||||
| 18525 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18525, __PRETTY_FUNCTION__)); | ||||||||
| 18526 | return E; | ||||||||
| 18527 | } | ||||||||
| 18528 | |||||||||
| 18529 | ExprResult VisitParenExpr(ParenExpr *E) { | ||||||||
| 18530 | return rebuildSugarExpr(E); | ||||||||
| 18531 | } | ||||||||
| 18532 | |||||||||
| 18533 | ExprResult VisitUnaryExtension(UnaryOperator *E) { | ||||||||
| 18534 | return rebuildSugarExpr(E); | ||||||||
| 18535 | } | ||||||||
| 18536 | |||||||||
| 18537 | ExprResult VisitUnaryAddrOf(UnaryOperator *E) { | ||||||||
| 18538 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
| 18539 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
| 18540 | |||||||||
| 18541 | Expr *SubExpr = SubResult.get(); | ||||||||
| 18542 | E->setSubExpr(SubExpr); | ||||||||
| 18543 | E->setType(S.Context.getPointerType(SubExpr->getType())); | ||||||||
| 18544 | assert(E->getValueKind() == VK_RValue)((E->getValueKind() == VK_RValue) ? static_cast<void> (0) : __assert_fail ("E->getValueKind() == VK_RValue", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18544, __PRETTY_FUNCTION__)); | ||||||||
| 18545 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18545, __PRETTY_FUNCTION__)); | ||||||||
| 18546 | return E; | ||||||||
| 18547 | } | ||||||||
| 18548 | |||||||||
| 18549 | ExprResult resolveDecl(Expr *E, ValueDecl *VD) { | ||||||||
| 18550 | if (!isa<FunctionDecl>(VD)) return VisitExpr(E); | ||||||||
| 18551 | |||||||||
| 18552 | E->setType(VD->getType()); | ||||||||
| 18553 | |||||||||
| 18554 | assert(E->getValueKind() == VK_RValue)((E->getValueKind() == VK_RValue) ? static_cast<void> (0) : __assert_fail ("E->getValueKind() == VK_RValue", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18554, __PRETTY_FUNCTION__)); | ||||||||
| 18555 | if (S.getLangOpts().CPlusPlus && | ||||||||
| 18556 | !(isa<CXXMethodDecl>(VD) && | ||||||||
| 18557 | cast<CXXMethodDecl>(VD)->isInstance())) | ||||||||
| 18558 | E->setValueKind(VK_LValue); | ||||||||
| 18559 | |||||||||
| 18560 | return E; | ||||||||
| 18561 | } | ||||||||
| 18562 | |||||||||
| 18563 | ExprResult VisitMemberExpr(MemberExpr *E) { | ||||||||
| 18564 | return resolveDecl(E, E->getMemberDecl()); | ||||||||
| 18565 | } | ||||||||
| 18566 | |||||||||
| 18567 | ExprResult VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
| 18568 | return resolveDecl(E, E->getDecl()); | ||||||||
| 18569 | } | ||||||||
| 18570 | }; | ||||||||
| 18571 | } | ||||||||
| 18572 | |||||||||
| 18573 | /// Given a function expression of unknown-any type, try to rebuild it | ||||||||
| 18574 | /// to have a function type. | ||||||||
| 18575 | static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *FunctionExpr) { | ||||||||
| 18576 | ExprResult Result = RebuildUnknownAnyFunction(S).Visit(FunctionExpr); | ||||||||
| 18577 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 18578 | return S.DefaultFunctionArrayConversion(Result.get()); | ||||||||
| 18579 | } | ||||||||
| 18580 | |||||||||
| 18581 | namespace { | ||||||||
| 18582 | /// A visitor for rebuilding an expression of type __unknown_anytype | ||||||||
| 18583 | /// into one which resolves the type directly on the referring | ||||||||
| 18584 | /// expression. Strict preservation of the original source | ||||||||
| 18585 | /// structure is not a goal. | ||||||||
| 18586 | struct RebuildUnknownAnyExpr | ||||||||
| 18587 | : StmtVisitor<RebuildUnknownAnyExpr, ExprResult> { | ||||||||
| 18588 | |||||||||
| 18589 | Sema &S; | ||||||||
| 18590 | |||||||||
| 18591 | /// The current destination type. | ||||||||
| 18592 | QualType DestType; | ||||||||
| 18593 | |||||||||
| 18594 | RebuildUnknownAnyExpr(Sema &S, QualType CastType) | ||||||||
| 18595 | : S(S), DestType(CastType) {} | ||||||||
| 18596 | |||||||||
| 18597 | ExprResult VisitStmt(Stmt *S) { | ||||||||
| 18598 | llvm_unreachable("unexpected statement!")::llvm::llvm_unreachable_internal("unexpected statement!", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18598); | ||||||||
| 18599 | } | ||||||||
| 18600 | |||||||||
| 18601 | ExprResult VisitExpr(Expr *E) { | ||||||||
| 18602 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_expr) | ||||||||
| 18603 | << E->getSourceRange(); | ||||||||
| 18604 | return ExprError(); | ||||||||
| 18605 | } | ||||||||
| 18606 | |||||||||
| 18607 | ExprResult VisitCallExpr(CallExpr *E); | ||||||||
| 18608 | ExprResult VisitObjCMessageExpr(ObjCMessageExpr *E); | ||||||||
| 18609 | |||||||||
| 18610 | /// Rebuild an expression which simply semantically wraps another | ||||||||
| 18611 | /// expression which it shares the type and value kind of. | ||||||||
| 18612 | template <class T> ExprResult rebuildSugarExpr(T *E) { | ||||||||
| 18613 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
| 18614 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
| 18615 | Expr *SubExpr = SubResult.get(); | ||||||||
| 18616 | E->setSubExpr(SubExpr); | ||||||||
| 18617 | E->setType(SubExpr->getType()); | ||||||||
| 18618 | E->setValueKind(SubExpr->getValueKind()); | ||||||||
| 18619 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18619, __PRETTY_FUNCTION__)); | ||||||||
| 18620 | return E; | ||||||||
| 18621 | } | ||||||||
| 18622 | |||||||||
| 18623 | ExprResult VisitParenExpr(ParenExpr *E) { | ||||||||
| 18624 | return rebuildSugarExpr(E); | ||||||||
| 18625 | } | ||||||||
| 18626 | |||||||||
| 18627 | ExprResult VisitUnaryExtension(UnaryOperator *E) { | ||||||||
| 18628 | return rebuildSugarExpr(E); | ||||||||
| 18629 | } | ||||||||
| 18630 | |||||||||
| 18631 | ExprResult VisitUnaryAddrOf(UnaryOperator *E) { | ||||||||
| 18632 | const PointerType *Ptr = DestType->getAs<PointerType>(); | ||||||||
| 18633 | if (!Ptr) { | ||||||||
| 18634 | S.Diag(E->getOperatorLoc(), diag::err_unknown_any_addrof) | ||||||||
| 18635 | << E->getSourceRange(); | ||||||||
| 18636 | return ExprError(); | ||||||||
| 18637 | } | ||||||||
| 18638 | |||||||||
| 18639 | if (isa<CallExpr>(E->getSubExpr())) { | ||||||||
| 18640 | S.Diag(E->getOperatorLoc(), diag::err_unknown_any_addrof_call) | ||||||||
| 18641 | << E->getSourceRange(); | ||||||||
| 18642 | return ExprError(); | ||||||||
| 18643 | } | ||||||||
| 18644 | |||||||||
| 18645 | assert(E->getValueKind() == VK_RValue)((E->getValueKind() == VK_RValue) ? static_cast<void> (0) : __assert_fail ("E->getValueKind() == VK_RValue", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18645, __PRETTY_FUNCTION__)); | ||||||||
| 18646 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18646, __PRETTY_FUNCTION__)); | ||||||||
| 18647 | E->setType(DestType); | ||||||||
| 18648 | |||||||||
| 18649 | // Build the sub-expression as if it were an object of the pointee type. | ||||||||
| 18650 | DestType = Ptr->getPointeeType(); | ||||||||
| 18651 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||||||
| 18652 | if (SubResult.isInvalid()) return ExprError(); | ||||||||
| 18653 | E->setSubExpr(SubResult.get()); | ||||||||
| 18654 | return E; | ||||||||
| 18655 | } | ||||||||
| 18656 | |||||||||
| 18657 | ExprResult VisitImplicitCastExpr(ImplicitCastExpr *E); | ||||||||
| 18658 | |||||||||
| 18659 | ExprResult resolveDecl(Expr *E, ValueDecl *VD); | ||||||||
| 18660 | |||||||||
| 18661 | ExprResult VisitMemberExpr(MemberExpr *E) { | ||||||||
| 18662 | return resolveDecl(E, E->getMemberDecl()); | ||||||||
| 18663 | } | ||||||||
| 18664 | |||||||||
| 18665 | ExprResult VisitDeclRefExpr(DeclRefExpr *E) { | ||||||||
| 18666 | return resolveDecl(E, E->getDecl()); | ||||||||
| 18667 | } | ||||||||
| 18668 | }; | ||||||||
| 18669 | } | ||||||||
| 18670 | |||||||||
| 18671 | /// Rebuilds a call expression which yielded __unknown_anytype. | ||||||||
| 18672 | ExprResult RebuildUnknownAnyExpr::VisitCallExpr(CallExpr *E) { | ||||||||
| 18673 | Expr *CalleeExpr = E->getCallee(); | ||||||||
| 18674 | |||||||||
| 18675 | enum FnKind { | ||||||||
| 18676 | FK_MemberFunction, | ||||||||
| 18677 | FK_FunctionPointer, | ||||||||
| 18678 | FK_BlockPointer | ||||||||
| 18679 | }; | ||||||||
| 18680 | |||||||||
| 18681 | FnKind Kind; | ||||||||
| 18682 | QualType CalleeType = CalleeExpr->getType(); | ||||||||
| 18683 | if (CalleeType == S.Context.BoundMemberTy) { | ||||||||
| 18684 | assert(isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E))((isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr >(E)) ? static_cast<void> (0) : __assert_fail ("isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18684, __PRETTY_FUNCTION__)); | ||||||||
| 18685 | Kind = FK_MemberFunction; | ||||||||
| 18686 | CalleeType = Expr::findBoundMemberType(CalleeExpr); | ||||||||
| 18687 | } else if (const PointerType *Ptr = CalleeType->getAs<PointerType>()) { | ||||||||
| 18688 | CalleeType = Ptr->getPointeeType(); | ||||||||
| 18689 | Kind = FK_FunctionPointer; | ||||||||
| 18690 | } else { | ||||||||
| 18691 | CalleeType = CalleeType->castAs<BlockPointerType>()->getPointeeType(); | ||||||||
| 18692 | Kind = FK_BlockPointer; | ||||||||
| 18693 | } | ||||||||
| 18694 | const FunctionType *FnType = CalleeType->castAs<FunctionType>(); | ||||||||
| 18695 | |||||||||
| 18696 | // Verify that this is a legal result type of a function. | ||||||||
| 18697 | if (DestType->isArrayType() || DestType->isFunctionType()) { | ||||||||
| 18698 | unsigned diagID = diag::err_func_returning_array_function; | ||||||||
| 18699 | if (Kind == FK_BlockPointer) | ||||||||
| 18700 | diagID = diag::err_block_returning_array_function; | ||||||||
| 18701 | |||||||||
| 18702 | S.Diag(E->getExprLoc(), diagID) | ||||||||
| 18703 | << DestType->isFunctionType() << DestType; | ||||||||
| 18704 | return ExprError(); | ||||||||
| 18705 | } | ||||||||
| 18706 | |||||||||
| 18707 | // Otherwise, go ahead and set DestType as the call's result. | ||||||||
| 18708 | E->setType(DestType.getNonLValueExprType(S.Context)); | ||||||||
| 18709 | E->setValueKind(Expr::getValueKindForType(DestType)); | ||||||||
| 18710 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18710, __PRETTY_FUNCTION__)); | ||||||||
| 18711 | |||||||||
| 18712 | // Rebuild the function type, replacing the result type with DestType. | ||||||||
| 18713 | const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FnType); | ||||||||
| 18714 | if (Proto) { | ||||||||
| 18715 | // __unknown_anytype(...) is a special case used by the debugger when | ||||||||
| 18716 | // it has no idea what a function's signature is. | ||||||||
| 18717 | // | ||||||||
| 18718 | // We want to build this call essentially under the K&R | ||||||||
| 18719 | // unprototyped rules, but making a FunctionNoProtoType in C++ | ||||||||
| 18720 | // would foul up all sorts of assumptions. However, we cannot | ||||||||
| 18721 | // simply pass all arguments as variadic arguments, nor can we | ||||||||
| 18722 | // portably just call the function under a non-variadic type; see | ||||||||
| 18723 | // the comment on IR-gen's TargetInfo::isNoProtoCallVariadic. | ||||||||
| 18724 | // However, it turns out that in practice it is generally safe to | ||||||||
| 18725 | // call a function declared as "A foo(B,C,D);" under the prototype | ||||||||
| 18726 | // "A foo(B,C,D,...);". The only known exception is with the | ||||||||
| 18727 | // Windows ABI, where any variadic function is implicitly cdecl | ||||||||
| 18728 | // regardless of its normal CC. Therefore we change the parameter | ||||||||
| 18729 | // types to match the types of the arguments. | ||||||||
| 18730 | // | ||||||||
| 18731 | // This is a hack, but it is far superior to moving the | ||||||||
| 18732 | // corresponding target-specific code from IR-gen to Sema/AST. | ||||||||
| 18733 | |||||||||
| 18734 | ArrayRef<QualType> ParamTypes = Proto->getParamTypes(); | ||||||||
| 18735 | SmallVector<QualType, 8> ArgTypes; | ||||||||
| 18736 | if (ParamTypes.empty() && Proto->isVariadic()) { // the special case | ||||||||
| 18737 | ArgTypes.reserve(E->getNumArgs()); | ||||||||
| 18738 | for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) { | ||||||||
| 18739 | Expr *Arg = E->getArg(i); | ||||||||
| 18740 | QualType ArgType = Arg->getType(); | ||||||||
| 18741 | if (E->isLValue()) { | ||||||||
| 18742 | ArgType = S.Context.getLValueReferenceType(ArgType); | ||||||||
| 18743 | } else if (E->isXValue()) { | ||||||||
| 18744 | ArgType = S.Context.getRValueReferenceType(ArgType); | ||||||||
| 18745 | } | ||||||||
| 18746 | ArgTypes.push_back(ArgType); | ||||||||
| 18747 | } | ||||||||
| 18748 | ParamTypes = ArgTypes; | ||||||||
| 18749 | } | ||||||||
| 18750 | DestType = S.Context.getFunctionType(DestType, ParamTypes, | ||||||||
| 18751 | Proto->getExtProtoInfo()); | ||||||||
| 18752 | } else { | ||||||||
| 18753 | DestType = S.Context.getFunctionNoProtoType(DestType, | ||||||||
| 18754 | FnType->getExtInfo()); | ||||||||
| 18755 | } | ||||||||
| 18756 | |||||||||
| 18757 | // Rebuild the appropriate pointer-to-function type. | ||||||||
| 18758 | switch (Kind) { | ||||||||
| 18759 | case FK_MemberFunction: | ||||||||
| 18760 | // Nothing to do. | ||||||||
| 18761 | break; | ||||||||
| 18762 | |||||||||
| 18763 | case FK_FunctionPointer: | ||||||||
| 18764 | DestType = S.Context.getPointerType(DestType); | ||||||||
| 18765 | break; | ||||||||
| 18766 | |||||||||
| 18767 | case FK_BlockPointer: | ||||||||
| 18768 | DestType = S.Context.getBlockPointerType(DestType); | ||||||||
| 18769 | break; | ||||||||
| 18770 | } | ||||||||
| 18771 | |||||||||
| 18772 | // Finally, we can recurse. | ||||||||
| 18773 | ExprResult CalleeResult = Visit(CalleeExpr); | ||||||||
| 18774 | if (!CalleeResult.isUsable()) return ExprError(); | ||||||||
| 18775 | E->setCallee(CalleeResult.get()); | ||||||||
| 18776 | |||||||||
| 18777 | // Bind a temporary if necessary. | ||||||||
| 18778 | return S.MaybeBindToTemporary(E); | ||||||||
| 18779 | } | ||||||||
| 18780 | |||||||||
| 18781 | ExprResult RebuildUnknownAnyExpr::VisitObjCMessageExpr(ObjCMessageExpr *E) { | ||||||||
| 18782 | // Verify that this is a legal result type of a call. | ||||||||
| 18783 | if (DestType->isArrayType() || DestType->isFunctionType()) { | ||||||||
| 18784 | S.Diag(E->getExprLoc(), diag::err_func_returning_array_function) | ||||||||
| 18785 | << DestType->isFunctionType() << DestType; | ||||||||
| 18786 | return ExprError(); | ||||||||
| 18787 | } | ||||||||
| 18788 | |||||||||
| 18789 | // Rewrite the method result type if available. | ||||||||
| 18790 | if (ObjCMethodDecl *Method = E->getMethodDecl()) { | ||||||||
| 18791 | assert(Method->getReturnType() == S.Context.UnknownAnyTy)((Method->getReturnType() == S.Context.UnknownAnyTy) ? static_cast <void> (0) : __assert_fail ("Method->getReturnType() == S.Context.UnknownAnyTy" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18791, __PRETTY_FUNCTION__)); | ||||||||
| 18792 | Method->setReturnType(DestType); | ||||||||
| 18793 | } | ||||||||
| 18794 | |||||||||
| 18795 | // Change the type of the message. | ||||||||
| 18796 | E->setType(DestType.getNonReferenceType()); | ||||||||
| 18797 | E->setValueKind(Expr::getValueKindForType(DestType)); | ||||||||
| 18798 | |||||||||
| 18799 | return S.MaybeBindToTemporary(E); | ||||||||
| 18800 | } | ||||||||
| 18801 | |||||||||
| 18802 | ExprResult RebuildUnknownAnyExpr::VisitImplicitCastExpr(ImplicitCastExpr *E) { | ||||||||
| 18803 | // The only case we should ever see here is a function-to-pointer decay. | ||||||||
| 18804 | if (E->getCastKind() == CK_FunctionToPointerDecay) { | ||||||||
| 18805 | assert(E->getValueKind() == VK_RValue)((E->getValueKind() == VK_RValue) ? static_cast<void> (0) : __assert_fail ("E->getValueKind() == VK_RValue", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18805, __PRETTY_FUNCTION__)); | ||||||||
| 18806 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18806, __PRETTY_FUNCTION__)); | ||||||||
| 18807 | |||||||||
| 18808 | E->setType(DestType); | ||||||||
| 18809 | |||||||||
| 18810 | // Rebuild the sub-expression as the pointee (function) type. | ||||||||
| 18811 | DestType = DestType->castAs<PointerType>()->getPointeeType(); | ||||||||
| 18812 | |||||||||
| 18813 | ExprResult Result = Visit(E->getSubExpr()); | ||||||||
| 18814 | if (!Result.isUsable()) return ExprError(); | ||||||||
| 18815 | |||||||||
| 18816 | E->setSubExpr(Result.get()); | ||||||||
| 18817 | return E; | ||||||||
| 18818 | } else if (E->getCastKind() == CK_LValueToRValue) { | ||||||||
| 18819 | assert(E->getValueKind() == VK_RValue)((E->getValueKind() == VK_RValue) ? static_cast<void> (0) : __assert_fail ("E->getValueKind() == VK_RValue", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18819, __PRETTY_FUNCTION__)); | ||||||||
| 18820 | assert(E->getObjectKind() == OK_Ordinary)((E->getObjectKind() == OK_Ordinary) ? static_cast<void > (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18820, __PRETTY_FUNCTION__)); | ||||||||
| 18821 | |||||||||
| 18822 | assert(isa<BlockPointerType>(E->getType()))((isa<BlockPointerType>(E->getType())) ? static_cast <void> (0) : __assert_fail ("isa<BlockPointerType>(E->getType())" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18822, __PRETTY_FUNCTION__)); | ||||||||
| 18823 | |||||||||
| 18824 | E->setType(DestType); | ||||||||
| 18825 | |||||||||
| 18826 | // The sub-expression has to be a lvalue reference, so rebuild it as such. | ||||||||
| 18827 | DestType = S.Context.getLValueReferenceType(DestType); | ||||||||
| 18828 | |||||||||
| 18829 | ExprResult Result = Visit(E->getSubExpr()); | ||||||||
| 18830 | if (!Result.isUsable()) return ExprError(); | ||||||||
| 18831 | |||||||||
| 18832 | E->setSubExpr(Result.get()); | ||||||||
| 18833 | return E; | ||||||||
| 18834 | } else { | ||||||||
| 18835 | llvm_unreachable("Unhandled cast type!")::llvm::llvm_unreachable_internal("Unhandled cast type!", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18835); | ||||||||
| 18836 | } | ||||||||
| 18837 | } | ||||||||
| 18838 | |||||||||
| 18839 | ExprResult RebuildUnknownAnyExpr::resolveDecl(Expr *E, ValueDecl *VD) { | ||||||||
| 18840 | ExprValueKind ValueKind = VK_LValue; | ||||||||
| 18841 | QualType Type = DestType; | ||||||||
| 18842 | |||||||||
| 18843 | // We know how to make this work for certain kinds of decls: | ||||||||
| 18844 | |||||||||
| 18845 | // - functions | ||||||||
| 18846 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(VD)) { | ||||||||
| 18847 | if (const PointerType *Ptr = Type->getAs<PointerType>()) { | ||||||||
| 18848 | DestType = Ptr->getPointeeType(); | ||||||||
| 18849 | ExprResult Result = resolveDecl(E, VD); | ||||||||
| 18850 | if (Result.isInvalid()) return ExprError(); | ||||||||
| 18851 | return S.ImpCastExprToType(Result.get(), Type, | ||||||||
| 18852 | CK_FunctionToPointerDecay, VK_RValue); | ||||||||
| 18853 | } | ||||||||
| 18854 | |||||||||
| 18855 | if (!Type->isFunctionType()) { | ||||||||
| 18856 | S.Diag(E->getExprLoc(), diag::err_unknown_any_function) | ||||||||
| 18857 | << VD << E->getSourceRange(); | ||||||||
| 18858 | return ExprError(); | ||||||||
| 18859 | } | ||||||||
| 18860 | if (const FunctionProtoType *FT = Type->getAs<FunctionProtoType>()) { | ||||||||
| 18861 | // We must match the FunctionDecl's type to the hack introduced in | ||||||||
| 18862 | // RebuildUnknownAnyExpr::VisitCallExpr to vararg functions of unknown | ||||||||
| 18863 | // type. See the lengthy commentary in that routine. | ||||||||
| 18864 | QualType FDT = FD->getType(); | ||||||||
| 18865 | const FunctionType *FnType = FDT->castAs<FunctionType>(); | ||||||||
| 18866 | const FunctionProtoType *Proto = dyn_cast_or_null<FunctionProtoType>(FnType); | ||||||||
| 18867 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||||||
| 18868 | if (DRE && Proto && Proto->getParamTypes().empty() && Proto->isVariadic()) { | ||||||||
| 18869 | SourceLocation Loc = FD->getLocation(); | ||||||||
| 18870 | FunctionDecl *NewFD = FunctionDecl::Create( | ||||||||
| 18871 | S.Context, FD->getDeclContext(), Loc, Loc, | ||||||||
| 18872 | FD->getNameInfo().getName(), DestType, FD->getTypeSourceInfo(), | ||||||||
| 18873 | SC_None, false /*isInlineSpecified*/, FD->hasPrototype(), | ||||||||
| 18874 | /*ConstexprKind*/ CSK_unspecified); | ||||||||
| 18875 | |||||||||
| 18876 | if (FD->getQualifier()) | ||||||||
| 18877 | NewFD->setQualifierInfo(FD->getQualifierLoc()); | ||||||||
| 18878 | |||||||||
| 18879 | SmallVector<ParmVarDecl*, 16> Params; | ||||||||
| 18880 | for (const auto &AI : FT->param_types()) { | ||||||||
| 18881 | ParmVarDecl *Param = | ||||||||
| 18882 | S.BuildParmVarDeclForTypedef(FD, Loc, AI); | ||||||||
| 18883 | Param->setScopeInfo(0, Params.size()); | ||||||||
| 18884 | Params.push_back(Param); | ||||||||
| 18885 | } | ||||||||
| 18886 | NewFD->setParams(Params); | ||||||||
| 18887 | DRE->setDecl(NewFD); | ||||||||
| 18888 | VD = DRE->getDecl(); | ||||||||
| 18889 | } | ||||||||
| 18890 | } | ||||||||
| 18891 | |||||||||
| 18892 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) | ||||||||
| 18893 | if (MD->isInstance()) { | ||||||||
| 18894 | ValueKind = VK_RValue; | ||||||||
| 18895 | Type = S.Context.BoundMemberTy; | ||||||||
| 18896 | } | ||||||||
| 18897 | |||||||||
| 18898 | // Function references aren't l-values in C. | ||||||||
| 18899 | if (!S.getLangOpts().CPlusPlus) | ||||||||
| 18900 | ValueKind = VK_RValue; | ||||||||
| 18901 | |||||||||
| 18902 | // - variables | ||||||||
| 18903 | } else if (isa<VarDecl>(VD)) { | ||||||||
| 18904 | if (const ReferenceType *RefTy = Type->getAs<ReferenceType>()) { | ||||||||
| 18905 | Type = RefTy->getPointeeType(); | ||||||||
| 18906 | } else if (Type->isFunctionType()) { | ||||||||
| 18907 | S.Diag(E->getExprLoc(), diag::err_unknown_any_var_function_type) | ||||||||
| 18908 | << VD << E->getSourceRange(); | ||||||||
| 18909 | return ExprError(); | ||||||||
| 18910 | } | ||||||||
| 18911 | |||||||||
| 18912 | // - nothing else | ||||||||
| 18913 | } else { | ||||||||
| 18914 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_decl) | ||||||||
| 18915 | << VD << E->getSourceRange(); | ||||||||
| 18916 | return ExprError(); | ||||||||
| 18917 | } | ||||||||
| 18918 | |||||||||
| 18919 | // Modifying the declaration like this is friendly to IR-gen but | ||||||||
| 18920 | // also really dangerous. | ||||||||
| 18921 | VD->setType(DestType); | ||||||||
| 18922 | E->setType(Type); | ||||||||
| 18923 | E->setValueKind(ValueKind); | ||||||||
| 18924 | return E; | ||||||||
| 18925 | } | ||||||||
| 18926 | |||||||||
| 18927 | /// Check a cast of an unknown-any type. We intentionally only | ||||||||
| 18928 | /// trigger this for C-style casts. | ||||||||
| 18929 | ExprResult Sema::checkUnknownAnyCast(SourceRange TypeRange, QualType CastType, | ||||||||
| 18930 | Expr *CastExpr, CastKind &CastKind, | ||||||||
| 18931 | ExprValueKind &VK, CXXCastPath &Path) { | ||||||||
| 18932 | // The type we're casting to must be either void or complete. | ||||||||
| 18933 | if (!CastType->isVoidType() && | ||||||||
| 18934 | RequireCompleteType(TypeRange.getBegin(), CastType, | ||||||||
| 18935 | diag::err_typecheck_cast_to_incomplete)) | ||||||||
| 18936 | return ExprError(); | ||||||||
| 18937 | |||||||||
| 18938 | // Rewrite the casted expression from scratch. | ||||||||
| 18939 | ExprResult result = RebuildUnknownAnyExpr(*this, CastType).Visit(CastExpr); | ||||||||
| 18940 | if (!result.isUsable()) return ExprError(); | ||||||||
| 18941 | |||||||||
| 18942 | CastExpr = result.get(); | ||||||||
| 18943 | VK = CastExpr->getValueKind(); | ||||||||
| 18944 | CastKind = CK_NoOp; | ||||||||
| 18945 | |||||||||
| 18946 | return CastExpr; | ||||||||
| 18947 | } | ||||||||
| 18948 | |||||||||
| 18949 | ExprResult Sema::forceUnknownAnyToType(Expr *E, QualType ToType) { | ||||||||
| 18950 | return RebuildUnknownAnyExpr(*this, ToType).Visit(E); | ||||||||
| 18951 | } | ||||||||
| 18952 | |||||||||
| 18953 | ExprResult Sema::checkUnknownAnyArg(SourceLocation callLoc, | ||||||||
| 18954 | Expr *arg, QualType ¶mType) { | ||||||||
| 18955 | // If the syntactic form of the argument is not an explicit cast of | ||||||||
| 18956 | // any sort, just do default argument promotion. | ||||||||
| 18957 | ExplicitCastExpr *castArg = dyn_cast<ExplicitCastExpr>(arg->IgnoreParens()); | ||||||||
| 18958 | if (!castArg) { | ||||||||
| 18959 | ExprResult result = DefaultArgumentPromotion(arg); | ||||||||
| 18960 | if (result.isInvalid()) return ExprError(); | ||||||||
| 18961 | paramType = result.get()->getType(); | ||||||||
| 18962 | return result; | ||||||||
| 18963 | } | ||||||||
| 18964 | |||||||||
| 18965 | // Otherwise, use the type that was written in the explicit cast. | ||||||||
| 18966 | assert(!arg->hasPlaceholderType())((!arg->hasPlaceholderType()) ? static_cast<void> (0 ) : __assert_fail ("!arg->hasPlaceholderType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 18966, __PRETTY_FUNCTION__)); | ||||||||
| 18967 | paramType = castArg->getTypeAsWritten(); | ||||||||
| 18968 | |||||||||
| 18969 | // Copy-initialize a parameter of that type. | ||||||||
| 18970 | InitializedEntity entity = | ||||||||
| 18971 | InitializedEntity::InitializeParameter(Context, paramType, | ||||||||
| 18972 | /*consumed*/ false); | ||||||||
| 18973 | return PerformCopyInitialization(entity, callLoc, arg); | ||||||||
| 18974 | } | ||||||||
| 18975 | |||||||||
| 18976 | static ExprResult diagnoseUnknownAnyExpr(Sema &S, Expr *E) { | ||||||||
| 18977 | Expr *orig = E; | ||||||||
| 18978 | unsigned diagID = diag::err_uncasted_use_of_unknown_any; | ||||||||
| 18979 | while (true) { | ||||||||
| 18980 | E = E->IgnoreParenImpCasts(); | ||||||||
| 18981 | if (CallExpr *call = dyn_cast<CallExpr>(E)) { | ||||||||
| 18982 | E = call->getCallee(); | ||||||||
| 18983 | diagID = diag::err_uncasted_call_of_unknown_any; | ||||||||
| 18984 | } else { | ||||||||
| 18985 | break; | ||||||||
| 18986 | } | ||||||||
| 18987 | } | ||||||||
| 18988 | |||||||||
| 18989 | SourceLocation loc; | ||||||||
| 18990 | NamedDecl *d; | ||||||||
| 18991 | if (DeclRefExpr *ref = dyn_cast<DeclRefExpr>(E)) { | ||||||||
| 18992 | loc = ref->getLocation(); | ||||||||
| 18993 | d = ref->getDecl(); | ||||||||
| 18994 | } else if (MemberExpr *mem = dyn_cast<MemberExpr>(E)) { | ||||||||
| 18995 | loc = mem->getMemberLoc(); | ||||||||
| 18996 | d = mem->getMemberDecl(); | ||||||||
| 18997 | } else if (ObjCMessageExpr *msg = dyn_cast<ObjCMessageExpr>(E)) { | ||||||||
| 18998 | diagID = diag::err_uncasted_call_of_unknown_any; | ||||||||
| 18999 | loc = msg->getSelectorStartLoc(); | ||||||||
| 19000 | d = msg->getMethodDecl(); | ||||||||
| 19001 | if (!d) { | ||||||||
| 19002 | S.Diag(loc, diag::err_uncasted_send_to_unknown_any_method) | ||||||||
| 19003 | << static_cast<unsigned>(msg->isClassMessage()) << msg->getSelector() | ||||||||
| 19004 | << orig->getSourceRange(); | ||||||||
| 19005 | return ExprError(); | ||||||||
| 19006 | } | ||||||||
| 19007 | } else { | ||||||||
| 19008 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_expr) | ||||||||
| 19009 | << E->getSourceRange(); | ||||||||
| 19010 | return ExprError(); | ||||||||
| 19011 | } | ||||||||
| 19012 | |||||||||
| 19013 | S.Diag(loc, diagID) << d << orig->getSourceRange(); | ||||||||
| 19014 | |||||||||
| 19015 | // Never recoverable. | ||||||||
| 19016 | return ExprError(); | ||||||||
| 19017 | } | ||||||||
| 19018 | |||||||||
| 19019 | /// Check for operands with placeholder types and complain if found. | ||||||||
| 19020 | /// Returns ExprError() if there was an error and no recovery was possible. | ||||||||
| 19021 | ExprResult Sema::CheckPlaceholderExpr(Expr *E) { | ||||||||
| 19022 | if (!getLangOpts().CPlusPlus) { | ||||||||
| 19023 | // C cannot handle TypoExpr nodes on either side of a binop because it | ||||||||
| 19024 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||||||
| 19025 | // been dealt with before checking the operands. | ||||||||
| 19026 | ExprResult Result = CorrectDelayedTyposInExpr(E); | ||||||||
| 19027 | if (!Result.isUsable()) return ExprError(); | ||||||||
| 19028 | E = Result.get(); | ||||||||
| 19029 | } | ||||||||
| 19030 | |||||||||
| 19031 | const BuiltinType *placeholderType = E->getType()->getAsPlaceholderType(); | ||||||||
| 19032 | if (!placeholderType) return E; | ||||||||
| 19033 | |||||||||
| 19034 | switch (placeholderType->getKind()) { | ||||||||
| 19035 | |||||||||
| 19036 | // Overloaded expressions. | ||||||||
| 19037 | case BuiltinType::Overload: { | ||||||||
| 19038 | // Try to resolve a single function template specialization. | ||||||||
| 19039 | // This is obligatory. | ||||||||
| 19040 | ExprResult Result = E; | ||||||||
| 19041 | if (ResolveAndFixSingleFunctionTemplateSpecialization(Result, false)) | ||||||||
| 19042 | return Result; | ||||||||
| 19043 | |||||||||
| 19044 | // No guarantees that ResolveAndFixSingleFunctionTemplateSpecialization | ||||||||
| 19045 | // leaves Result unchanged on failure. | ||||||||
| 19046 | Result = E; | ||||||||
| 19047 | if (resolveAndFixAddressOfSingleOverloadCandidate(Result)) | ||||||||
| 19048 | return Result; | ||||||||
| 19049 | |||||||||
| 19050 | // If that failed, try to recover with a call. | ||||||||
| 19051 | tryToRecoverWithCall(Result, PDiag(diag::err_ovl_unresolvable), | ||||||||
| 19052 | /*complain*/ true); | ||||||||
| 19053 | return Result; | ||||||||
| 19054 | } | ||||||||
| 19055 | |||||||||
| 19056 | // Bound member functions. | ||||||||
| 19057 | case BuiltinType::BoundMember: { | ||||||||
| 19058 | ExprResult result = E; | ||||||||
| 19059 | const Expr *BME = E->IgnoreParens(); | ||||||||
| 19060 | PartialDiagnostic PD = PDiag(diag::err_bound_member_function); | ||||||||
| 19061 | // Try to give a nicer diagnostic if it is a bound member that we recognize. | ||||||||
| 19062 | if (isa<CXXPseudoDestructorExpr>(BME)) { | ||||||||
| 19063 | PD = PDiag(diag::err_dtor_expr_without_call) << /*pseudo-destructor*/ 1; | ||||||||
| 19064 | } else if (const auto *ME = dyn_cast<MemberExpr>(BME)) { | ||||||||
| 19065 | if (ME->getMemberNameInfo().getName().getNameKind() == | ||||||||
| 19066 | DeclarationName::CXXDestructorName) | ||||||||
| 19067 | PD = PDiag(diag::err_dtor_expr_without_call) << /*destructor*/ 0; | ||||||||
| 19068 | } | ||||||||
| 19069 | tryToRecoverWithCall(result, PD, | ||||||||
| 19070 | /*complain*/ true); | ||||||||
| 19071 | return result; | ||||||||
| 19072 | } | ||||||||
| 19073 | |||||||||
| 19074 | // ARC unbridged casts. | ||||||||
| 19075 | case BuiltinType::ARCUnbridgedCast: { | ||||||||
| 19076 | Expr *realCast = stripARCUnbridgedCast(E); | ||||||||
| 19077 | diagnoseARCUnbridgedCast(realCast); | ||||||||
| 19078 | return realCast; | ||||||||
| 19079 | } | ||||||||
| 19080 | |||||||||
| 19081 | // Expressions of unknown type. | ||||||||
| 19082 | case BuiltinType::UnknownAny: | ||||||||
| 19083 | return diagnoseUnknownAnyExpr(*this, E); | ||||||||
| 19084 | |||||||||
| 19085 | // Pseudo-objects. | ||||||||
| 19086 | case BuiltinType::PseudoObject: | ||||||||
| 19087 | return checkPseudoObjectRValue(E); | ||||||||
| 19088 | |||||||||
| 19089 | case BuiltinType::BuiltinFn: { | ||||||||
| 19090 | // Accept __noop without parens by implicitly converting it to a call expr. | ||||||||
| 19091 | auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts()); | ||||||||
| 19092 | if (DRE) { | ||||||||
| 19093 | auto *FD = cast<FunctionDecl>(DRE->getDecl()); | ||||||||
| 19094 | if (FD->getBuiltinID() == Builtin::BI__noop) { | ||||||||
| 19095 | E = ImpCastExprToType(E, Context.getPointerType(FD->getType()), | ||||||||
| 19096 | CK_BuiltinFnToFnPtr) | ||||||||
| 19097 | .get(); | ||||||||
| 19098 | return CallExpr::Create(Context, E, /*Args=*/{}, Context.IntTy, | ||||||||
| 19099 | VK_RValue, SourceLocation(), | ||||||||
| 19100 | FPOptionsOverride()); | ||||||||
| 19101 | } | ||||||||
| 19102 | } | ||||||||
| 19103 | |||||||||
| 19104 | Diag(E->getBeginLoc(), diag::err_builtin_fn_use); | ||||||||
| 19105 | return ExprError(); | ||||||||
| 19106 | } | ||||||||
| 19107 | |||||||||
| 19108 | case BuiltinType::IncompleteMatrixIdx: | ||||||||
| 19109 | Diag(cast<MatrixSubscriptExpr>(E->IgnoreParens()) | ||||||||
| 19110 | ->getRowIdx() | ||||||||
| 19111 | ->getBeginLoc(), | ||||||||
| 19112 | diag::err_matrix_incomplete_index); | ||||||||
| 19113 | return ExprError(); | ||||||||
| 19114 | |||||||||
| 19115 | // Expressions of unknown type. | ||||||||
| 19116 | case BuiltinType::OMPArraySection: | ||||||||
| 19117 | Diag(E->getBeginLoc(), diag::err_omp_array_section_use); | ||||||||
| 19118 | return ExprError(); | ||||||||
| 19119 | |||||||||
| 19120 | // Expressions of unknown type. | ||||||||
| 19121 | case BuiltinType::OMPArrayShaping: | ||||||||
| 19122 | return ExprError(Diag(E->getBeginLoc(), diag::err_omp_array_shaping_use)); | ||||||||
| 19123 | |||||||||
| 19124 | case BuiltinType::OMPIterator: | ||||||||
| 19125 | return ExprError(Diag(E->getBeginLoc(), diag::err_omp_iterator_use)); | ||||||||
| 19126 | |||||||||
| 19127 | // Everything else should be impossible. | ||||||||
| 19128 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
| 19129 | case BuiltinType::Id: | ||||||||
| 19130 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
| 19131 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
| 19132 | case BuiltinType::Id: | ||||||||
| 19133 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 19134 | #define SVE_TYPE(Name, Id, SingletonId) \ | ||||||||
| 19135 | case BuiltinType::Id: | ||||||||
| 19136 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||
| 19137 | #define BUILTIN_TYPE(Id, SingletonId) case BuiltinType::Id: | ||||||||
| 19138 | #define PLACEHOLDER_TYPE(Id, SingletonId) | ||||||||
| 19139 | #include "clang/AST/BuiltinTypes.def" | ||||||||
| 19140 | break; | ||||||||
| 19141 | } | ||||||||
| 19142 | |||||||||
| 19143 | llvm_unreachable("invalid placeholder type!")::llvm::llvm_unreachable_internal("invalid placeholder type!" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 19143); | ||||||||
| 19144 | } | ||||||||
| 19145 | |||||||||
| 19146 | bool Sema::CheckCaseExpression(Expr *E) { | ||||||||
| 19147 | if (E->isTypeDependent()) | ||||||||
| 19148 | return true; | ||||||||
| 19149 | if (E->isValueDependent() || E->isIntegerConstantExpr(Context)) | ||||||||
| 19150 | return E->getType()->isIntegralOrEnumerationType(); | ||||||||
| 19151 | return false; | ||||||||
| 19152 | } | ||||||||
| 19153 | |||||||||
| 19154 | /// ActOnObjCBoolLiteral - Parse {__objc_yes,__objc_no} literals. | ||||||||
| 19155 | ExprResult | ||||||||
| 19156 | Sema::ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind) { | ||||||||
| 19157 | assert((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) &&(((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && "Unknown Objective-C Boolean value!") ? static_cast<void> (0) : __assert_fail ("(Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && \"Unknown Objective-C Boolean value!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 19158, __PRETTY_FUNCTION__)) | ||||||||
| 19158 | "Unknown Objective-C Boolean value!")(((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && "Unknown Objective-C Boolean value!") ? static_cast<void> (0) : __assert_fail ("(Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && \"Unknown Objective-C Boolean value!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/Sema/SemaExpr.cpp" , 19158, __PRETTY_FUNCTION__)); | ||||||||
| 19159 | QualType BoolT = Context.ObjCBuiltinBoolTy; | ||||||||
| 19160 | if (!Context.getBOOLDecl()) { | ||||||||
| 19161 | LookupResult Result(*this, &Context.Idents.get("BOOL"), OpLoc, | ||||||||
| 19162 | Sema::LookupOrdinaryName); | ||||||||
| 19163 | if (LookupName(Result, getCurScope()) && Result.isSingleResult()) { | ||||||||
| 19164 | NamedDecl *ND = Result.getFoundDecl(); | ||||||||
| 19165 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(ND)) | ||||||||
| 19166 | Context.setBOOLDecl(TD); | ||||||||
| 19167 | } | ||||||||
| 19168 | } | ||||||||
| 19169 | if (Context.getBOOLDecl()) | ||||||||
| 19170 | BoolT = Context.getBOOLType(); | ||||||||
| 19171 | return new (Context) | ||||||||
| 19172 | ObjCBoolLiteralExpr(Kind == tok::kw___objc_yes, BoolT, OpLoc); | ||||||||
| 19173 | } | ||||||||
| 19174 | |||||||||
| 19175 | ExprResult Sema::ActOnObjCAvailabilityCheckExpr( | ||||||||
| 19176 | llvm::ArrayRef<AvailabilitySpec> AvailSpecs, SourceLocation AtLoc, | ||||||||
| 19177 | SourceLocation RParen) { | ||||||||
| 19178 | |||||||||
| 19179 | StringRef Platform = getASTContext().getTargetInfo().getPlatformName(); | ||||||||
| 19180 | |||||||||
| 19181 | auto Spec = llvm::find_if(AvailSpecs, [&](const AvailabilitySpec &Spec) { | ||||||||
| 19182 | return Spec.getPlatform() == Platform; | ||||||||
| 19183 | }); | ||||||||
| 19184 | |||||||||
| 19185 | VersionTuple Version; | ||||||||
| 19186 | if (Spec != AvailSpecs.end()) | ||||||||
| 19187 | Version = Spec->getVersion(); | ||||||||
| 19188 | |||||||||
| 19189 | // The use of `@available` in the enclosing function should be analyzed to | ||||||||
| 19190 | // warn when it's used inappropriately (i.e. not if(@available)). | ||||||||
| 19191 | if (getCurFunctionOrMethodDecl()) | ||||||||
| 19192 | getEnclosingFunction()->HasPotentialAvailabilityViolations = true; | ||||||||
| 19193 | else if (getCurBlock() || getCurLambda()) | ||||||||
| 19194 | getCurFunction()->HasPotentialAvailabilityViolations = true; | ||||||||
| 19195 | |||||||||
| 19196 | return new (Context) | ||||||||
| 19197 | ObjCAvailabilityCheckExpr(Version, AtLoc, RParen, Context.BoolTy); | ||||||||
| 19198 | } | ||||||||
| 19199 | |||||||||
| 19200 | ExprResult Sema::CreateRecoveryExpr(SourceLocation Begin, SourceLocation End, | ||||||||
| 19201 | ArrayRef<Expr *> SubExprs, QualType T) { | ||||||||
| 19202 | if (!Context.getLangOpts().RecoveryAST) | ||||||||
| 19203 | return ExprError(); | ||||||||
| 19204 | |||||||||
| 19205 | if (isSFINAEContext()) | ||||||||
| 19206 | return ExprError(); | ||||||||
| 19207 | |||||||||
| 19208 | if (T.isNull() || !Context.getLangOpts().RecoveryASTType) | ||||||||
| 19209 | // We don't know the concrete type, fallback to dependent type. | ||||||||
| 19210 | T = Context.DependentTy; | ||||||||
| 19211 | return RecoveryExpr::Create(Context, T, Begin, End, SubExprs); | ||||||||
| 19212 | } |
| 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 Type; | ||||||||
| 65 | |||||||||
| 66 | enum { | ||||||||
| 67 | TypeAlignmentInBits = 4, | ||||||||
| 68 | TypeAlignment = 1 << TypeAlignmentInBits | ||||||||
| 69 | }; | ||||||||
| 70 | |||||||||
| 71 | namespace serialization { | ||||||||
| 72 | template <class T> class AbstractTypeReader; | ||||||||
| 73 | template <class T> class AbstractTypeWriter; | ||||||||
| 74 | } | ||||||||
| 75 | |||||||||
| 76 | } // namespace clang | ||||||||
| 77 | |||||||||
| 78 | namespace llvm { | ||||||||
| 79 | |||||||||
| 80 | template <typename T> | ||||||||
| 81 | struct PointerLikeTypeTraits; | ||||||||
| 82 | template<> | ||||||||
| 83 | struct PointerLikeTypeTraits< ::clang::Type*> { | ||||||||
| 84 | static inline void *getAsVoidPointer(::clang::Type *P) { return P; } | ||||||||
| 85 | |||||||||
| 86 | static inline ::clang::Type *getFromVoidPointer(void *P) { | ||||||||
| 87 | return static_cast< ::clang::Type*>(P); | ||||||||
| 88 | } | ||||||||
| 89 | |||||||||
| 90 | static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits; | ||||||||
| 91 | }; | ||||||||
| 92 | |||||||||
| 93 | template<> | ||||||||
| 94 | struct PointerLikeTypeTraits< ::clang::ExtQuals*> { | ||||||||
| 95 | static inline void *getAsVoidPointer(::clang::ExtQuals *P) { return P; } | ||||||||
| 96 | |||||||||
| 97 | static inline ::clang::ExtQuals *getFromVoidPointer(void *P) { | ||||||||
| 98 | return static_cast< ::clang::ExtQuals*>(P); | ||||||||
| 99 | } | ||||||||
| 100 | |||||||||
| 101 | static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits; | ||||||||
| 102 | }; | ||||||||
| 103 | |||||||||
| 104 | } // namespace llvm | ||||||||
| 105 | |||||||||
| 106 | namespace clang { | ||||||||
| 107 | |||||||||
| 108 | class ASTContext; | ||||||||
| 109 | template <typename> class CanQual; | ||||||||
| 110 | class CXXRecordDecl; | ||||||||
| 111 | class DeclContext; | ||||||||
| 112 | class EnumDecl; | ||||||||
| 113 | class Expr; | ||||||||
| 114 | class ExtQualsTypeCommonBase; | ||||||||
| 115 | class FunctionDecl; | ||||||||
| 116 | class IdentifierInfo; | ||||||||
| 117 | class NamedDecl; | ||||||||
| 118 | class ObjCInterfaceDecl; | ||||||||
| 119 | class ObjCProtocolDecl; | ||||||||
| 120 | class ObjCTypeParamDecl; | ||||||||
| 121 | struct PrintingPolicy; | ||||||||
| 122 | class RecordDecl; | ||||||||
| 123 | class Stmt; | ||||||||
| 124 | class TagDecl; | ||||||||
| 125 | class TemplateArgument; | ||||||||
| 126 | class TemplateArgumentListInfo; | ||||||||
| 127 | class TemplateArgumentLoc; | ||||||||
| 128 | class TemplateTypeParmDecl; | ||||||||
| 129 | class TypedefNameDecl; | ||||||||
| 130 | class UnresolvedUsingTypenameDecl; | ||||||||
| 131 | |||||||||
| 132 | using CanQualType = CanQual<Type>; | ||||||||
| 133 | |||||||||
| 134 | // Provide forward declarations for all of the *Type classes. | ||||||||
| 135 | #define TYPE(Class, Base) class Class##Type; | ||||||||
| 136 | #include "clang/AST/TypeNodes.inc" | ||||||||
| 137 | |||||||||
| 138 | /// The collection of all-type qualifiers we support. | ||||||||
| 139 | /// Clang supports five independent qualifiers: | ||||||||
| 140 | /// * C99: const, volatile, and restrict | ||||||||
| 141 | /// * MS: __unaligned | ||||||||
| 142 | /// * Embedded C (TR18037): address spaces | ||||||||
| 143 | /// * Objective C: the GC attributes (none, weak, or strong) | ||||||||
| 144 | class Qualifiers { | ||||||||
| 145 | public: | ||||||||
| 146 | enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. | ||||||||
| 147 | Const = 0x1, | ||||||||
| 148 | Restrict = 0x2, | ||||||||
| 149 | Volatile = 0x4, | ||||||||
| 150 | CVRMask = Const | Volatile | Restrict | ||||||||
| 151 | }; | ||||||||
| 152 | |||||||||
| 153 | enum GC { | ||||||||
| 154 | GCNone = 0, | ||||||||
| 155 | Weak, | ||||||||
| 156 | Strong | ||||||||
| 157 | }; | ||||||||
| 158 | |||||||||
| 159 | enum ObjCLifetime { | ||||||||
| 160 | /// There is no lifetime qualification on this type. | ||||||||
| 161 | OCL_None, | ||||||||
| 162 | |||||||||
| 163 | /// This object can be modified without requiring retains or | ||||||||
| 164 | /// releases. | ||||||||
| 165 | OCL_ExplicitNone, | ||||||||
| 166 | |||||||||
| 167 | /// Assigning into this object requires the old value to be | ||||||||
| 168 | /// released and the new value to be retained. The timing of the | ||||||||
| 169 | /// release of the old value is inexact: it may be moved to | ||||||||
| 170 | /// immediately after the last known point where the value is | ||||||||
| 171 | /// live. | ||||||||
| 172 | OCL_Strong, | ||||||||
| 173 | |||||||||
| 174 | /// Reading or writing from this object requires a barrier call. | ||||||||
| 175 | OCL_Weak, | ||||||||
| 176 | |||||||||
| 177 | /// Assigning into this object requires a lifetime extension. | ||||||||
| 178 | OCL_Autoreleasing | ||||||||
| 179 | }; | ||||||||
| 180 | |||||||||
| 181 | enum { | ||||||||
| 182 | /// The maximum supported address space number. | ||||||||
| 183 | /// 23 bits should be enough for anyone. | ||||||||
| 184 | MaxAddressSpace = 0x7fffffu, | ||||||||
| 185 | |||||||||
| 186 | /// The width of the "fast" qualifier mask. | ||||||||
| 187 | FastWidth = 3, | ||||||||
| 188 | |||||||||
| 189 | /// The fast qualifier mask. | ||||||||
| 190 | FastMask = (1 << FastWidth) - 1 | ||||||||
| 191 | }; | ||||||||
| 192 | |||||||||
| 193 | /// Returns the common set of qualifiers while removing them from | ||||||||
| 194 | /// the given sets. | ||||||||
| 195 | static Qualifiers removeCommonQualifiers(Qualifiers &L, Qualifiers &R) { | ||||||||
| 196 | // If both are only CVR-qualified, bit operations are sufficient. | ||||||||
| 197 | if (!(L.Mask & ~CVRMask) && !(R.Mask & ~CVRMask)) { | ||||||||
| 198 | Qualifiers Q; | ||||||||
| 199 | Q.Mask = L.Mask & R.Mask; | ||||||||
| 200 | L.Mask &= ~Q.Mask; | ||||||||
| 201 | R.Mask &= ~Q.Mask; | ||||||||
| 202 | return Q; | ||||||||
| 203 | } | ||||||||
| 204 | |||||||||
| 205 | Qualifiers Q; | ||||||||
| 206 | unsigned CommonCRV = L.getCVRQualifiers() & R.getCVRQualifiers(); | ||||||||
| 207 | Q.addCVRQualifiers(CommonCRV); | ||||||||
| 208 | L.removeCVRQualifiers(CommonCRV); | ||||||||
| 209 | R.removeCVRQualifiers(CommonCRV); | ||||||||
| 210 | |||||||||
| 211 | if (L.getObjCGCAttr() == R.getObjCGCAttr()) { | ||||||||
| 212 | Q.setObjCGCAttr(L.getObjCGCAttr()); | ||||||||
| 213 | L.removeObjCGCAttr(); | ||||||||
| 214 | R.removeObjCGCAttr(); | ||||||||
| 215 | } | ||||||||
| 216 | |||||||||
| 217 | if (L.getObjCLifetime() == R.getObjCLifetime()) { | ||||||||
| 218 | Q.setObjCLifetime(L.getObjCLifetime()); | ||||||||
| 219 | L.removeObjCLifetime(); | ||||||||
| 220 | R.removeObjCLifetime(); | ||||||||
| 221 | } | ||||||||
| 222 | |||||||||
| 223 | if (L.getAddressSpace() == R.getAddressSpace()) { | ||||||||
| 224 | Q.setAddressSpace(L.getAddressSpace()); | ||||||||
| 225 | L.removeAddressSpace(); | ||||||||
| 226 | R.removeAddressSpace(); | ||||||||
| 227 | } | ||||||||
| 228 | return Q; | ||||||||
| 229 | } | ||||||||
| 230 | |||||||||
| 231 | static Qualifiers fromFastMask(unsigned Mask) { | ||||||||
| 232 | Qualifiers Qs; | ||||||||
| 233 | Qs.addFastQualifiers(Mask); | ||||||||
| 234 | return Qs; | ||||||||
| 235 | } | ||||||||
| 236 | |||||||||
| 237 | static Qualifiers fromCVRMask(unsigned CVR) { | ||||||||
| 238 | Qualifiers Qs; | ||||||||
| 239 | Qs.addCVRQualifiers(CVR); | ||||||||
| 240 | return Qs; | ||||||||
| 241 | } | ||||||||
| 242 | |||||||||
| 243 | static Qualifiers fromCVRUMask(unsigned CVRU) { | ||||||||
| 244 | Qualifiers Qs; | ||||||||
| 245 | Qs.addCVRUQualifiers(CVRU); | ||||||||
| 246 | return Qs; | ||||||||
| 247 | } | ||||||||
| 248 | |||||||||
| 249 | // Deserialize qualifiers from an opaque representation. | ||||||||
| 250 | static Qualifiers fromOpaqueValue(unsigned opaque) { | ||||||||
| 251 | Qualifiers Qs; | ||||||||
| 252 | Qs.Mask = opaque; | ||||||||
| 253 | return Qs; | ||||||||
| 254 | } | ||||||||
| 255 | |||||||||
| 256 | // Serialize these qualifiers into an opaque representation. | ||||||||
| 257 | unsigned getAsOpaqueValue() const { | ||||||||
| 258 | return Mask; | ||||||||
| 259 | } | ||||||||
| 260 | |||||||||
| 261 | bool hasConst() const { return Mask & Const; } | ||||||||
| 262 | bool hasOnlyConst() const { return Mask == Const; } | ||||||||
| 263 | void removeConst() { Mask &= ~Const; } | ||||||||
| 264 | void addConst() { Mask |= Const; } | ||||||||
| 265 | |||||||||
| 266 | bool hasVolatile() const { return Mask & Volatile; } | ||||||||
| 267 | bool hasOnlyVolatile() const { return Mask == Volatile; } | ||||||||
| 268 | void removeVolatile() { Mask &= ~Volatile; } | ||||||||
| 269 | void addVolatile() { Mask |= Volatile; } | ||||||||
| 270 | |||||||||
| 271 | bool hasRestrict() const { return Mask & Restrict; } | ||||||||
| 272 | bool hasOnlyRestrict() const { return Mask == Restrict; } | ||||||||
| 273 | void removeRestrict() { Mask &= ~Restrict; } | ||||||||
| 274 | void addRestrict() { Mask |= Restrict; } | ||||||||
| 275 | |||||||||
| 276 | bool hasCVRQualifiers() const { return getCVRQualifiers(); } | ||||||||
| 277 | unsigned getCVRQualifiers() const { return Mask & CVRMask; } | ||||||||
| 278 | unsigned getCVRUQualifiers() const { return Mask & (CVRMask | UMask); } | ||||||||
| 279 | |||||||||
| 280 | void setCVRQualifiers(unsigned mask) { | ||||||||
| 281 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 281, __PRETTY_FUNCTION__)); | ||||||||
| 282 | Mask = (Mask & ~CVRMask) | mask; | ||||||||
| 283 | } | ||||||||
| 284 | void removeCVRQualifiers(unsigned mask) { | ||||||||
| 285 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 285, __PRETTY_FUNCTION__)); | ||||||||
| 286 | Mask &= ~mask; | ||||||||
| 287 | } | ||||||||
| 288 | void removeCVRQualifiers() { | ||||||||
| 289 | removeCVRQualifiers(CVRMask); | ||||||||
| 290 | } | ||||||||
| 291 | void addCVRQualifiers(unsigned mask) { | ||||||||
| 292 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 292, __PRETTY_FUNCTION__)); | ||||||||
| 293 | Mask |= mask; | ||||||||
| 294 | } | ||||||||
| 295 | void addCVRUQualifiers(unsigned mask) { | ||||||||
| 296 | assert(!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits")((!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask & ~UMask) && \"bitmask contains non-CVRU bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 296, __PRETTY_FUNCTION__)); | ||||||||
| 297 | Mask |= mask; | ||||||||
| 298 | } | ||||||||
| 299 | |||||||||
| 300 | bool hasUnaligned() const { return Mask & UMask; } | ||||||||
| 301 | void setUnaligned(bool flag) { | ||||||||
| 302 | Mask = (Mask & ~UMask) | (flag ? UMask : 0); | ||||||||
| 303 | } | ||||||||
| 304 | void removeUnaligned() { Mask &= ~UMask; } | ||||||||
| 305 | void addUnaligned() { Mask |= UMask; } | ||||||||
| 306 | |||||||||
| 307 | bool hasObjCGCAttr() const { return Mask & GCAttrMask; } | ||||||||
| 308 | GC getObjCGCAttr() const { return GC((Mask & GCAttrMask) >> GCAttrShift); } | ||||||||
| 309 | void setObjCGCAttr(GC type) { | ||||||||
| 310 | Mask = (Mask & ~GCAttrMask) | (type << GCAttrShift); | ||||||||
| 311 | } | ||||||||
| 312 | void removeObjCGCAttr() { setObjCGCAttr(GCNone); } | ||||||||
| 313 | void addObjCGCAttr(GC type) { | ||||||||
| 314 | assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 314, __PRETTY_FUNCTION__)); | ||||||||
| 315 | setObjCGCAttr(type); | ||||||||
| 316 | } | ||||||||
| 317 | Qualifiers withoutObjCGCAttr() const { | ||||||||
| 318 | Qualifiers qs = *this; | ||||||||
| 319 | qs.removeObjCGCAttr(); | ||||||||
| 320 | return qs; | ||||||||
| 321 | } | ||||||||
| 322 | Qualifiers withoutObjCLifetime() const { | ||||||||
| 323 | Qualifiers qs = *this; | ||||||||
| 324 | qs.removeObjCLifetime(); | ||||||||
| 325 | return qs; | ||||||||
| 326 | } | ||||||||
| 327 | Qualifiers withoutAddressSpace() const { | ||||||||
| 328 | Qualifiers qs = *this; | ||||||||
| 329 | qs.removeAddressSpace(); | ||||||||
| 330 | return qs; | ||||||||
| 331 | } | ||||||||
| 332 | |||||||||
| 333 | bool hasObjCLifetime() const { return Mask & LifetimeMask; } | ||||||||
| 334 | ObjCLifetime getObjCLifetime() const { | ||||||||
| 335 | return ObjCLifetime((Mask & LifetimeMask) >> LifetimeShift); | ||||||||
| 336 | } | ||||||||
| 337 | void setObjCLifetime(ObjCLifetime type) { | ||||||||
| 338 | Mask = (Mask & ~LifetimeMask) | (type << LifetimeShift); | ||||||||
| 339 | } | ||||||||
| 340 | void removeObjCLifetime() { setObjCLifetime(OCL_None); } | ||||||||
| 341 | void addObjCLifetime(ObjCLifetime type) { | ||||||||
| 342 | assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 342, __PRETTY_FUNCTION__)); | ||||||||
| 343 | assert(!hasObjCLifetime())((!hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("!hasObjCLifetime()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 343, __PRETTY_FUNCTION__)); | ||||||||
| 344 | Mask |= (type << LifetimeShift); | ||||||||
| 345 | } | ||||||||
| 346 | |||||||||
| 347 | /// True if the lifetime is neither None or ExplicitNone. | ||||||||
| 348 | bool hasNonTrivialObjCLifetime() const { | ||||||||
| 349 | ObjCLifetime lifetime = getObjCLifetime(); | ||||||||
| 350 | return (lifetime > OCL_ExplicitNone); | ||||||||
| 351 | } | ||||||||
| 352 | |||||||||
| 353 | /// True if the lifetime is either strong or weak. | ||||||||
| 354 | bool hasStrongOrWeakObjCLifetime() const { | ||||||||
| 355 | ObjCLifetime lifetime = getObjCLifetime(); | ||||||||
| 356 | return (lifetime == OCL_Strong || lifetime == OCL_Weak); | ||||||||
| 357 | } | ||||||||
| 358 | |||||||||
| 359 | bool hasAddressSpace() const { return Mask & AddressSpaceMask; } | ||||||||
| 360 | LangAS getAddressSpace() const { | ||||||||
| 361 | return static_cast<LangAS>(Mask >> AddressSpaceShift); | ||||||||
| 362 | } | ||||||||
| 363 | bool hasTargetSpecificAddressSpace() const { | ||||||||
| 364 | return isTargetAddressSpace(getAddressSpace()); | ||||||||
| 365 | } | ||||||||
| 366 | /// Get the address space attribute value to be printed by diagnostics. | ||||||||
| 367 | unsigned getAddressSpaceAttributePrintValue() const { | ||||||||
| 368 | auto Addr = getAddressSpace(); | ||||||||
| 369 | // This function is not supposed to be used with language specific | ||||||||
| 370 | // address spaces. If that happens, the diagnostic message should consider | ||||||||
| 371 | // printing the QualType instead of the address space value. | ||||||||
| 372 | assert(Addr == LangAS::Default || hasTargetSpecificAddressSpace())((Addr == LangAS::Default || hasTargetSpecificAddressSpace()) ? static_cast<void> (0) : __assert_fail ("Addr == LangAS::Default || hasTargetSpecificAddressSpace()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 372, __PRETTY_FUNCTION__)); | ||||||||
| 373 | if (Addr != LangAS::Default) | ||||||||
| 374 | return toTargetAddressSpace(Addr); | ||||||||
| 375 | // TODO: The diagnostic messages where Addr may be 0 should be fixed | ||||||||
| 376 | // since it cannot differentiate the situation where 0 denotes the default | ||||||||
| 377 | // address space or user specified __attribute__((address_space(0))). | ||||||||
| 378 | return 0; | ||||||||
| 379 | } | ||||||||
| 380 | void setAddressSpace(LangAS space) { | ||||||||
| 381 | assert((unsigned)space <= MaxAddressSpace)(((unsigned)space <= MaxAddressSpace) ? static_cast<void > (0) : __assert_fail ("(unsigned)space <= MaxAddressSpace" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 381, __PRETTY_FUNCTION__)); | ||||||||
| 382 | Mask = (Mask & ~AddressSpaceMask) | ||||||||
| 383 | | (((uint32_t) space) << AddressSpaceShift); | ||||||||
| 384 | } | ||||||||
| 385 | void removeAddressSpace() { setAddressSpace(LangAS::Default); } | ||||||||
| 386 | void addAddressSpace(LangAS space) { | ||||||||
| 387 | assert(space != LangAS::Default)((space != LangAS::Default) ? static_cast<void> (0) : __assert_fail ("space != LangAS::Default", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 387, __PRETTY_FUNCTION__)); | ||||||||
| 388 | setAddressSpace(space); | ||||||||
| 389 | } | ||||||||
| 390 | |||||||||
| 391 | // Fast qualifiers are those that can be allocated directly | ||||||||
| 392 | // on a QualType object. | ||||||||
| 393 | bool hasFastQualifiers() const { return getFastQualifiers(); } | ||||||||
| 394 | unsigned getFastQualifiers() const { return Mask & FastMask; } | ||||||||
| 395 | void setFastQualifiers(unsigned mask) { | ||||||||
| 396 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 396, __PRETTY_FUNCTION__)); | ||||||||
| 397 | Mask = (Mask & ~FastMask) | mask; | ||||||||
| 398 | } | ||||||||
| 399 | void removeFastQualifiers(unsigned mask) { | ||||||||
| 400 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 400, __PRETTY_FUNCTION__)); | ||||||||
| 401 | Mask &= ~mask; | ||||||||
| 402 | } | ||||||||
| 403 | void removeFastQualifiers() { | ||||||||
| 404 | removeFastQualifiers(FastMask); | ||||||||
| 405 | } | ||||||||
| 406 | void addFastQualifiers(unsigned mask) { | ||||||||
| 407 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 407, __PRETTY_FUNCTION__)); | ||||||||
| 408 | Mask |= mask; | ||||||||
| 409 | } | ||||||||
| 410 | |||||||||
| 411 | /// Return true if the set contains any qualifiers which require an ExtQuals | ||||||||
| 412 | /// node to be allocated. | ||||||||
| 413 | bool hasNonFastQualifiers() const { return Mask & ~FastMask; } | ||||||||
| 414 | Qualifiers getNonFastQualifiers() const { | ||||||||
| 415 | Qualifiers Quals = *this; | ||||||||
| 416 | Quals.setFastQualifiers(0); | ||||||||
| 417 | return Quals; | ||||||||
| 418 | } | ||||||||
| 419 | |||||||||
| 420 | /// Return true if the set contains any qualifiers. | ||||||||
| 421 | bool hasQualifiers() const { return Mask; } | ||||||||
| 422 | bool empty() const { return !Mask; } | ||||||||
| 423 | |||||||||
| 424 | /// Add the qualifiers from the given set to this set. | ||||||||
| 425 | void addQualifiers(Qualifiers Q) { | ||||||||
| 426 | // If the other set doesn't have any non-boolean qualifiers, just | ||||||||
| 427 | // bit-or it in. | ||||||||
| 428 | if (!(Q.Mask & ~CVRMask)) | ||||||||
| 429 | Mask |= Q.Mask; | ||||||||
| 430 | else { | ||||||||
| 431 | Mask |= (Q.Mask & CVRMask); | ||||||||
| 432 | if (Q.hasAddressSpace()) | ||||||||
| 433 | addAddressSpace(Q.getAddressSpace()); | ||||||||
| 434 | if (Q.hasObjCGCAttr()) | ||||||||
| 435 | addObjCGCAttr(Q.getObjCGCAttr()); | ||||||||
| 436 | if (Q.hasObjCLifetime()) | ||||||||
| 437 | addObjCLifetime(Q.getObjCLifetime()); | ||||||||
| 438 | } | ||||||||
| 439 | } | ||||||||
| 440 | |||||||||
| 441 | /// Remove the qualifiers from the given set from this set. | ||||||||
| 442 | void removeQualifiers(Qualifiers Q) { | ||||||||
| 443 | // If the other set doesn't have any non-boolean qualifiers, just | ||||||||
| 444 | // bit-and the inverse in. | ||||||||
| 445 | if (!(Q.Mask & ~CVRMask)) | ||||||||
| 446 | Mask &= ~Q.Mask; | ||||||||
| 447 | else { | ||||||||
| 448 | Mask &= ~(Q.Mask & CVRMask); | ||||||||
| 449 | if (getObjCGCAttr() == Q.getObjCGCAttr()) | ||||||||
| 450 | removeObjCGCAttr(); | ||||||||
| 451 | if (getObjCLifetime() == Q.getObjCLifetime()) | ||||||||
| 452 | removeObjCLifetime(); | ||||||||
| 453 | if (getAddressSpace() == Q.getAddressSpace()) | ||||||||
| 454 | removeAddressSpace(); | ||||||||
| 455 | } | ||||||||
| 456 | } | ||||||||
| 457 | |||||||||
| 458 | /// Add the qualifiers from the given set to this set, given that | ||||||||
| 459 | /// they don't conflict. | ||||||||
| 460 | void addConsistentQualifiers(Qualifiers qs) { | ||||||||
| 461 | assert(getAddressSpace() == qs.getAddressSpace() ||((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace () || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 462, __PRETTY_FUNCTION__)) | ||||||||
| 462 | !hasAddressSpace() || !qs.hasAddressSpace())((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace () || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 462, __PRETTY_FUNCTION__)); | ||||||||
| 463 | assert(getObjCGCAttr() == qs.getObjCGCAttr() ||((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 464, __PRETTY_FUNCTION__)) | ||||||||
| 464 | !hasObjCGCAttr() || !qs.hasObjCGCAttr())((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 464, __PRETTY_FUNCTION__)); | ||||||||
| 465 | assert(getObjCLifetime() == qs.getObjCLifetime() ||((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime () || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 466, __PRETTY_FUNCTION__)) | ||||||||
| 466 | !hasObjCLifetime() || !qs.hasObjCLifetime())((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime () || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 466, __PRETTY_FUNCTION__)); | ||||||||
| 467 | Mask |= qs.Mask; | ||||||||
| 468 | } | ||||||||
| 469 | |||||||||
| 470 | /// Returns true if address space A is equal to or a superset of B. | ||||||||
| 471 | /// OpenCL v2.0 defines conversion rules (OpenCLC v2.0 s6.5.5) and notion of | ||||||||
| 472 | /// overlapping address spaces. | ||||||||
| 473 | /// CL1.1 or CL1.2: | ||||||||
| 474 | /// every address space is a superset of itself. | ||||||||
| 475 | /// CL2.0 adds: | ||||||||
| 476 | /// __generic is a superset of any address space except for __constant. | ||||||||
| 477 | static bool isAddressSpaceSupersetOf(LangAS A, LangAS B) { | ||||||||
| 478 | // Address spaces must match exactly. | ||||||||
| 479 | return A == B || | ||||||||
| 480 | // Otherwise in OpenCLC v2.0 s6.5.5: every address space except | ||||||||
| 481 | // for __constant can be used as __generic. | ||||||||
| 482 | (A == LangAS::opencl_generic && B != LangAS::opencl_constant) || | ||||||||
| 483 | // We also define global_device and global_host address spaces, | ||||||||
| 484 | // to distinguish global pointers allocated on host from pointers | ||||||||
| 485 | // allocated on device, which are a subset of __global. | ||||||||
| 486 | (A == LangAS::opencl_global && (B == LangAS::opencl_global_device || | ||||||||
| 487 | B == LangAS::opencl_global_host)) || | ||||||||
| 488 | // Consider pointer size address spaces to be equivalent to default. | ||||||||
| 489 | ((isPtrSizeAddressSpace(A) || A == LangAS::Default) && | ||||||||
| 490 | (isPtrSizeAddressSpace(B) || B == LangAS::Default)); | ||||||||
| 491 | } | ||||||||
| 492 | |||||||||
| 493 | /// Returns true if the address space in these qualifiers is equal to or | ||||||||
| 494 | /// a superset of the address space in the argument qualifiers. | ||||||||
| 495 | bool isAddressSpaceSupersetOf(Qualifiers other) const { | ||||||||
| 496 | return isAddressSpaceSupersetOf(getAddressSpace(), other.getAddressSpace()); | ||||||||
| 497 | } | ||||||||
| 498 | |||||||||
| 499 | /// Determines if these qualifiers compatibly include another set. | ||||||||
| 500 | /// Generally this answers the question of whether an object with the other | ||||||||
| 501 | /// qualifiers can be safely used as an object with these qualifiers. | ||||||||
| 502 | bool compatiblyIncludes(Qualifiers other) const { | ||||||||
| 503 | return isAddressSpaceSupersetOf(other) && | ||||||||
| 504 | // ObjC GC qualifiers can match, be added, or be removed, but can't | ||||||||
| 505 | // be changed. | ||||||||
| 506 | (getObjCGCAttr() == other.getObjCGCAttr() || !hasObjCGCAttr() || | ||||||||
| 507 | !other.hasObjCGCAttr()) && | ||||||||
| 508 | // ObjC lifetime qualifiers must match exactly. | ||||||||
| 509 | getObjCLifetime() == other.getObjCLifetime() && | ||||||||
| 510 | // CVR qualifiers may subset. | ||||||||
| 511 | (((Mask & CVRMask) | (other.Mask & CVRMask)) == (Mask & CVRMask)) && | ||||||||
| 512 | // U qualifier may superset. | ||||||||
| 513 | (!other.hasUnaligned() || hasUnaligned()); | ||||||||
| 514 | } | ||||||||
| 515 | |||||||||
| 516 | /// Determines if these qualifiers compatibly include another set of | ||||||||
| 517 | /// qualifiers from the narrow perspective of Objective-C ARC lifetime. | ||||||||
| 518 | /// | ||||||||
| 519 | /// One set of Objective-C lifetime qualifiers compatibly includes the other | ||||||||
| 520 | /// if the lifetime qualifiers match, or if both are non-__weak and the | ||||||||
| 521 | /// including set also contains the 'const' qualifier, or both are non-__weak | ||||||||
| 522 | /// and one is None (which can only happen in non-ARC modes). | ||||||||
| 523 | bool compatiblyIncludesObjCLifetime(Qualifiers other) const { | ||||||||
| 524 | if (getObjCLifetime() == other.getObjCLifetime()) | ||||||||
| 525 | return true; | ||||||||
| 526 | |||||||||
| 527 | if (getObjCLifetime() == OCL_Weak || other.getObjCLifetime() == OCL_Weak) | ||||||||
| 528 | return false; | ||||||||
| 529 | |||||||||
| 530 | if (getObjCLifetime() == OCL_None || other.getObjCLifetime() == OCL_None) | ||||||||
| 531 | return true; | ||||||||
| 532 | |||||||||
| 533 | return hasConst(); | ||||||||
| 534 | } | ||||||||
| 535 | |||||||||
| 536 | /// Determine whether this set of qualifiers is a strict superset of | ||||||||
| 537 | /// another set of qualifiers, not considering qualifier compatibility. | ||||||||
| 538 | bool isStrictSupersetOf(Qualifiers Other) const; | ||||||||
| 539 | |||||||||
| 540 | bool operator==(Qualifiers Other) const { return Mask == Other.Mask; } | ||||||||
| 541 | bool operator!=(Qualifiers Other) const { return Mask != Other.Mask; } | ||||||||
| 542 | |||||||||
| 543 | explicit operator bool() const { return hasQualifiers(); } | ||||||||
| 544 | |||||||||
| 545 | Qualifiers &operator+=(Qualifiers R) { | ||||||||
| 546 | addQualifiers(R); | ||||||||
| 547 | return *this; | ||||||||
| 548 | } | ||||||||
| 549 | |||||||||
| 550 | // Union two qualifier sets. If an enumerated qualifier appears | ||||||||
| 551 | // in both sets, use the one from the right. | ||||||||
| 552 | friend Qualifiers operator+(Qualifiers L, Qualifiers R) { | ||||||||
| 553 | L += R; | ||||||||
| 554 | return L; | ||||||||
| 555 | } | ||||||||
| 556 | |||||||||
| 557 | Qualifiers &operator-=(Qualifiers R) { | ||||||||
| 558 | removeQualifiers(R); | ||||||||
| 559 | return *this; | ||||||||
| 560 | } | ||||||||
| 561 | |||||||||
| 562 | /// Compute the difference between two qualifier sets. | ||||||||
| 563 | friend Qualifiers operator-(Qualifiers L, Qualifiers R) { | ||||||||
| 564 | L -= R; | ||||||||
| 565 | return L; | ||||||||
| 566 | } | ||||||||
| 567 | |||||||||
| 568 | std::string getAsString() const; | ||||||||
| 569 | std::string getAsString(const PrintingPolicy &Policy) const; | ||||||||
| 570 | |||||||||
| 571 | static std::string getAddrSpaceAsString(LangAS AS); | ||||||||
| 572 | |||||||||
| 573 | bool isEmptyWhenPrinted(const PrintingPolicy &Policy) const; | ||||||||
| 574 | void print(raw_ostream &OS, const PrintingPolicy &Policy, | ||||||||
| 575 | bool appendSpaceIfNonEmpty = false) const; | ||||||||
| 576 | |||||||||
| 577 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
| 578 | ID.AddInteger(Mask); | ||||||||
| 579 | } | ||||||||
| 580 | |||||||||
| 581 | private: | ||||||||
| 582 | // bits: |0 1 2|3|4 .. 5|6 .. 8|9 ... 31| | ||||||||
| 583 | // |C R V|U|GCAttr|Lifetime|AddressSpace| | ||||||||
| 584 | uint32_t Mask = 0; | ||||||||
| 585 | |||||||||
| 586 | static const uint32_t UMask = 0x8; | ||||||||
| 587 | static const uint32_t UShift = 3; | ||||||||
| 588 | static const uint32_t GCAttrMask = 0x30; | ||||||||
| 589 | static const uint32_t GCAttrShift = 4; | ||||||||
| 590 | static const uint32_t LifetimeMask = 0x1C0; | ||||||||
| 591 | static const uint32_t LifetimeShift = 6; | ||||||||
| 592 | static const uint32_t AddressSpaceMask = | ||||||||
| 593 | ~(CVRMask | UMask | GCAttrMask | LifetimeMask); | ||||||||
| 594 | static const uint32_t AddressSpaceShift = 9; | ||||||||
| 595 | }; | ||||||||
| 596 | |||||||||
| 597 | /// A std::pair-like structure for storing a qualified type split | ||||||||
| 598 | /// into its local qualifiers and its locally-unqualified type. | ||||||||
| 599 | struct SplitQualType { | ||||||||
| 600 | /// The locally-unqualified type. | ||||||||
| 601 | const Type *Ty = nullptr; | ||||||||
| 602 | |||||||||
| 603 | /// The local qualifiers. | ||||||||
| 604 | Qualifiers Quals; | ||||||||
| 605 | |||||||||
| 606 | SplitQualType() = default; | ||||||||
| 607 | SplitQualType(const Type *ty, Qualifiers qs) : Ty(ty), Quals(qs) {} | ||||||||
| 608 | |||||||||
| 609 | SplitQualType getSingleStepDesugaredType() const; // end of this file | ||||||||
| 610 | |||||||||
| 611 | // Make std::tie work. | ||||||||
| 612 | std::pair<const Type *,Qualifiers> asPair() const { | ||||||||
| 613 | return std::pair<const Type *, Qualifiers>(Ty, Quals); | ||||||||
| 614 | } | ||||||||
| 615 | |||||||||
| 616 | friend bool operator==(SplitQualType a, SplitQualType b) { | ||||||||
| 617 | return a.Ty == b.Ty && a.Quals == b.Quals; | ||||||||
| 618 | } | ||||||||
| 619 | friend bool operator!=(SplitQualType a, SplitQualType b) { | ||||||||
| 620 | return a.Ty != b.Ty || a.Quals != b.Quals; | ||||||||
| 621 | } | ||||||||
| 622 | }; | ||||||||
| 623 | |||||||||
| 624 | /// The kind of type we are substituting Objective-C type arguments into. | ||||||||
| 625 | /// | ||||||||
| 626 | /// The kind of substitution affects the replacement of type parameters when | ||||||||
| 627 | /// no concrete type information is provided, e.g., when dealing with an | ||||||||
| 628 | /// unspecialized type. | ||||||||
| 629 | enum class ObjCSubstitutionContext { | ||||||||
| 630 | /// An ordinary type. | ||||||||
| 631 | Ordinary, | ||||||||
| 632 | |||||||||
| 633 | /// The result type of a method or function. | ||||||||
| 634 | Result, | ||||||||
| 635 | |||||||||
| 636 | /// The parameter type of a method or function. | ||||||||
| 637 | Parameter, | ||||||||
| 638 | |||||||||
| 639 | /// The type of a property. | ||||||||
| 640 | Property, | ||||||||
| 641 | |||||||||
| 642 | /// The superclass of a type. | ||||||||
| 643 | Superclass, | ||||||||
| 644 | }; | ||||||||
| 645 | |||||||||
| 646 | /// A (possibly-)qualified type. | ||||||||
| 647 | /// | ||||||||
| 648 | /// For efficiency, we don't store CV-qualified types as nodes on their | ||||||||
| 649 | /// own: instead each reference to a type stores the qualifiers. This | ||||||||
| 650 | /// greatly reduces the number of nodes we need to allocate for types (for | ||||||||
| 651 | /// example we only need one for 'int', 'const int', 'volatile int', | ||||||||
| 652 | /// 'const volatile int', etc). | ||||||||
| 653 | /// | ||||||||
| 654 | /// As an added efficiency bonus, instead of making this a pair, we | ||||||||
| 655 | /// just store the two bits we care about in the low bits of the | ||||||||
| 656 | /// pointer. To handle the packing/unpacking, we make QualType be a | ||||||||
| 657 | /// simple wrapper class that acts like a smart pointer. A third bit | ||||||||
| 658 | /// indicates whether there are extended qualifiers present, in which | ||||||||
| 659 | /// case the pointer points to a special structure. | ||||||||
| 660 | class QualType { | ||||||||
| 661 | friend class QualifierCollector; | ||||||||
| 662 | |||||||||
| 663 | // Thankfully, these are efficiently composable. | ||||||||
| 664 | llvm::PointerIntPair<llvm::PointerUnion<const Type *, const ExtQuals *>, | ||||||||
| 665 | Qualifiers::FastWidth> Value; | ||||||||
| 666 | |||||||||
| 667 | const ExtQuals *getExtQualsUnsafe() const { | ||||||||
| 668 | return Value.getPointer().get<const ExtQuals*>(); | ||||||||
| 669 | } | ||||||||
| 670 | |||||||||
| 671 | const Type *getTypePtrUnsafe() const { | ||||||||
| 672 | return Value.getPointer().get<const Type*>(); | ||||||||
| 673 | } | ||||||||
| 674 | |||||||||
| 675 | const ExtQualsTypeCommonBase *getCommonPtr() const { | ||||||||
| 676 | assert(!isNull() && "Cannot retrieve a NULL type pointer")((!isNull() && "Cannot retrieve a NULL type pointer") ? static_cast<void> (0) : __assert_fail ("!isNull() && \"Cannot retrieve a NULL type pointer\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 676, __PRETTY_FUNCTION__)); | ||||||||
| 677 | auto CommonPtrVal = reinterpret_cast<uintptr_t>(Value.getOpaqueValue()); | ||||||||
| 678 | CommonPtrVal &= ~(uintptr_t)((1 << TypeAlignmentInBits) - 1); | ||||||||
| 679 | return reinterpret_cast<ExtQualsTypeCommonBase*>(CommonPtrVal); | ||||||||
| 680 | } | ||||||||
| 681 | |||||||||
| 682 | public: | ||||||||
| 683 | QualType() = default; | ||||||||
| 684 | QualType(const Type *Ptr, unsigned Quals) : Value(Ptr, Quals) {} | ||||||||
| 685 | QualType(const ExtQuals *Ptr, unsigned Quals) : Value(Ptr, Quals) {} | ||||||||
| 686 | |||||||||
| 687 | unsigned getLocalFastQualifiers() const { return Value.getInt(); } | ||||||||
| 688 | void setLocalFastQualifiers(unsigned Quals) { Value.setInt(Quals); } | ||||||||
| 689 | |||||||||
| 690 | /// Retrieves a pointer to the underlying (unqualified) type. | ||||||||
| 691 | /// | ||||||||
| 692 | /// This function requires that the type not be NULL. If the type might be | ||||||||
| 693 | /// NULL, use the (slightly less efficient) \c getTypePtrOrNull(). | ||||||||
| 694 | const Type *getTypePtr() const; | ||||||||
| 695 | |||||||||
| 696 | const Type *getTypePtrOrNull() const; | ||||||||
| 697 | |||||||||
| 698 | /// Retrieves a pointer to the name of the base type. | ||||||||
| 699 | const IdentifierInfo *getBaseTypeIdentifier() const; | ||||||||
| 700 | |||||||||
| 701 | /// Divides a QualType into its unqualified type and a set of local | ||||||||
| 702 | /// qualifiers. | ||||||||
| 703 | SplitQualType split() const; | ||||||||
| 704 | |||||||||
| 705 | void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } | ||||||||
| 706 | |||||||||
| 707 | static QualType getFromOpaquePtr(const void *Ptr) { | ||||||||
| 708 | QualType T; | ||||||||
| 709 | T.Value.setFromOpaqueValue(const_cast<void*>(Ptr)); | ||||||||
| 710 | return T; | ||||||||
| 711 | } | ||||||||
| 712 | |||||||||
| 713 | const Type &operator*() const { | ||||||||
| 714 | return *getTypePtr(); | ||||||||
| 715 | } | ||||||||
| 716 | |||||||||
| 717 | const Type *operator->() const { | ||||||||
| 718 | return getTypePtr(); | ||||||||
| 719 | } | ||||||||
| 720 | |||||||||
| 721 | bool isCanonical() const; | ||||||||
| 722 | bool isCanonicalAsParam() const; | ||||||||
| 723 | |||||||||
| 724 | /// Return true if this QualType doesn't point to a type yet. | ||||||||
| 725 | bool isNull() const { | ||||||||
| 726 | return Value.getPointer().isNull(); | ||||||||
| 727 | } | ||||||||
| 728 | |||||||||
| 729 | /// Determine whether this particular QualType instance has the | ||||||||
| 730 | /// "const" qualifier set, without looking through typedefs that may have | ||||||||
| 731 | /// added "const" at a different level. | ||||||||
| 732 | bool isLocalConstQualified() const { | ||||||||
| 733 | return (getLocalFastQualifiers() & Qualifiers::Const); | ||||||||
| 734 | } | ||||||||
| 735 | |||||||||
| 736 | /// Determine whether this type is const-qualified. | ||||||||
| 737 | bool isConstQualified() const; | ||||||||
| 738 | |||||||||
| 739 | /// Determine whether this particular QualType instance has the | ||||||||
| 740 | /// "restrict" qualifier set, without looking through typedefs that may have | ||||||||
| 741 | /// added "restrict" at a different level. | ||||||||
| 742 | bool isLocalRestrictQualified() const { | ||||||||
| 743 | return (getLocalFastQualifiers() & Qualifiers::Restrict); | ||||||||
| 744 | } | ||||||||
| 745 | |||||||||
| 746 | /// Determine whether this type is restrict-qualified. | ||||||||
| 747 | bool isRestrictQualified() const; | ||||||||
| 748 | |||||||||
| 749 | /// Determine whether this particular QualType instance has the | ||||||||
| 750 | /// "volatile" qualifier set, without looking through typedefs that may have | ||||||||
| 751 | /// added "volatile" at a different level. | ||||||||
| 752 | bool isLocalVolatileQualified() const { | ||||||||
| 753 | return (getLocalFastQualifiers() & Qualifiers::Volatile); | ||||||||
| 754 | } | ||||||||
| 755 | |||||||||
| 756 | /// Determine whether this type is volatile-qualified. | ||||||||
| 757 | bool isVolatileQualified() const; | ||||||||
| 758 | |||||||||
| 759 | /// Determine whether this particular QualType instance has any | ||||||||
| 760 | /// qualifiers, without looking through any typedefs that might add | ||||||||
| 761 | /// qualifiers at a different level. | ||||||||
| 762 | bool hasLocalQualifiers() const { | ||||||||
| 763 | return getLocalFastQualifiers() || hasLocalNonFastQualifiers(); | ||||||||
| 764 | } | ||||||||
| 765 | |||||||||
| 766 | /// Determine whether this type has any qualifiers. | ||||||||
| 767 | bool hasQualifiers() const; | ||||||||
| 768 | |||||||||
| 769 | /// Determine whether this particular QualType instance has any | ||||||||
| 770 | /// "non-fast" qualifiers, e.g., those that are stored in an ExtQualType | ||||||||
| 771 | /// instance. | ||||||||
| 772 | bool hasLocalNonFastQualifiers() const { | ||||||||
| 773 | return Value.getPointer().is<const ExtQuals*>(); | ||||||||
| 774 | } | ||||||||
| 775 | |||||||||
| 776 | /// Retrieve the set of qualifiers local to this particular QualType | ||||||||
| 777 | /// instance, not including any qualifiers acquired through typedefs or | ||||||||
| 778 | /// other sugar. | ||||||||
| 779 | Qualifiers getLocalQualifiers() const; | ||||||||
| 780 | |||||||||
| 781 | /// Retrieve the set of qualifiers applied to this type. | ||||||||
| 782 | Qualifiers getQualifiers() const; | ||||||||
| 783 | |||||||||
| 784 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers | ||||||||
| 785 | /// local to this particular QualType instance, not including any qualifiers | ||||||||
| 786 | /// acquired through typedefs or other sugar. | ||||||||
| 787 | unsigned getLocalCVRQualifiers() const { | ||||||||
| 788 | return getLocalFastQualifiers(); | ||||||||
| 789 | } | ||||||||
| 790 | |||||||||
| 791 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers | ||||||||
| 792 | /// applied to this type. | ||||||||
| 793 | unsigned getCVRQualifiers() const; | ||||||||
| 794 | |||||||||
| 795 | bool isConstant(const ASTContext& Ctx) const { | ||||||||
| 796 | return QualType::isConstant(*this, Ctx); | ||||||||
| 797 | } | ||||||||
| 798 | |||||||||
| 799 | /// Determine whether this is a Plain Old Data (POD) type (C++ 3.9p10). | ||||||||
| 800 | bool isPODType(const ASTContext &Context) const; | ||||||||
| 801 | |||||||||
| 802 | /// Return true if this is a POD type according to the rules of the C++98 | ||||||||
| 803 | /// standard, regardless of the current compilation's language. | ||||||||
| 804 | bool isCXX98PODType(const ASTContext &Context) const; | ||||||||
| 805 | |||||||||
| 806 | /// Return true if this is a POD type according to the more relaxed rules | ||||||||
| 807 | /// of the C++11 standard, regardless of the current compilation's language. | ||||||||
| 808 | /// (C++0x [basic.types]p9). Note that, unlike | ||||||||
| 809 | /// CXXRecordDecl::isCXX11StandardLayout, this takes DRs into account. | ||||||||
| 810 | bool isCXX11PODType(const ASTContext &Context) const; | ||||||||
| 811 | |||||||||
| 812 | /// Return true if this is a trivial type per (C++0x [basic.types]p9) | ||||||||
| 813 | bool isTrivialType(const ASTContext &Context) const; | ||||||||
| 814 | |||||||||
| 815 | /// Return true if this is a trivially copyable type (C++0x [basic.types]p9) | ||||||||
| 816 | bool isTriviallyCopyableType(const ASTContext &Context) const; | ||||||||
| 817 | |||||||||
| 818 | |||||||||
| 819 | /// Returns true if it is a class and it might be dynamic. | ||||||||
| 820 | bool mayBeDynamicClass() const; | ||||||||
| 821 | |||||||||
| 822 | /// Returns true if it is not a class or if the class might not be dynamic. | ||||||||
| 823 | bool mayBeNotDynamicClass() const; | ||||||||
| 824 | |||||||||
| 825 | // Don't promise in the API that anything besides 'const' can be | ||||||||
| 826 | // easily added. | ||||||||
| 827 | |||||||||
| 828 | /// Add the `const` type qualifier to this QualType. | ||||||||
| 829 | void addConst() { | ||||||||
| 830 | addFastQualifiers(Qualifiers::Const); | ||||||||
| 831 | } | ||||||||
| 832 | QualType withConst() const { | ||||||||
| 833 | return withFastQualifiers(Qualifiers::Const); | ||||||||
| 834 | } | ||||||||
| 835 | |||||||||
| 836 | /// Add the `volatile` type qualifier to this QualType. | ||||||||
| 837 | void addVolatile() { | ||||||||
| 838 | addFastQualifiers(Qualifiers::Volatile); | ||||||||
| 839 | } | ||||||||
| 840 | QualType withVolatile() const { | ||||||||
| 841 | return withFastQualifiers(Qualifiers::Volatile); | ||||||||
| 842 | } | ||||||||
| 843 | |||||||||
| 844 | /// Add the `restrict` qualifier to this QualType. | ||||||||
| 845 | void addRestrict() { | ||||||||
| 846 | addFastQualifiers(Qualifiers::Restrict); | ||||||||
| 847 | } | ||||||||
| 848 | QualType withRestrict() const { | ||||||||
| 849 | return withFastQualifiers(Qualifiers::Restrict); | ||||||||
| 850 | } | ||||||||
| 851 | |||||||||
| 852 | QualType withCVRQualifiers(unsigned CVR) const { | ||||||||
| 853 | return withFastQualifiers(CVR); | ||||||||
| 854 | } | ||||||||
| 855 | |||||||||
| 856 | void addFastQualifiers(unsigned TQs) { | ||||||||
| 857 | assert(!(TQs & ~Qualifiers::FastMask)((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!" ) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 858, __PRETTY_FUNCTION__)) | ||||||||
| 858 | && "non-fast qualifier bits set in mask!")((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!" ) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 858, __PRETTY_FUNCTION__)); | ||||||||
| 859 | Value.setInt(Value.getInt() | TQs); | ||||||||
| 860 | } | ||||||||
| 861 | |||||||||
| 862 | void removeLocalConst(); | ||||||||
| 863 | void removeLocalVolatile(); | ||||||||
| 864 | void removeLocalRestrict(); | ||||||||
| 865 | void removeLocalCVRQualifiers(unsigned Mask); | ||||||||
| 866 | |||||||||
| 867 | void removeLocalFastQualifiers() { Value.setInt(0); } | ||||||||
| 868 | void removeLocalFastQualifiers(unsigned Mask) { | ||||||||
| 869 | assert(!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers")((!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::FastMask) && \"mask has non-fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 869, __PRETTY_FUNCTION__)); | ||||||||
| 870 | Value.setInt(Value.getInt() & ~Mask); | ||||||||
| 871 | } | ||||||||
| 872 | |||||||||
| 873 | // Creates a type with the given qualifiers in addition to any | ||||||||
| 874 | // qualifiers already on this type. | ||||||||
| 875 | QualType withFastQualifiers(unsigned TQs) const { | ||||||||
| 876 | QualType T = *this; | ||||||||
| 877 | T.addFastQualifiers(TQs); | ||||||||
| 878 | return T; | ||||||||
| 879 | } | ||||||||
| 880 | |||||||||
| 881 | // Creates a type with exactly the given fast qualifiers, removing | ||||||||
| 882 | // any existing fast qualifiers. | ||||||||
| 883 | QualType withExactLocalFastQualifiers(unsigned TQs) const { | ||||||||
| 884 | return withoutLocalFastQualifiers().withFastQualifiers(TQs); | ||||||||
| 885 | } | ||||||||
| 886 | |||||||||
| 887 | // Removes fast qualifiers, but leaves any extended qualifiers in place. | ||||||||
| 888 | QualType withoutLocalFastQualifiers() const { | ||||||||
| 889 | QualType T = *this; | ||||||||
| 890 | T.removeLocalFastQualifiers(); | ||||||||
| 891 | return T; | ||||||||
| 892 | } | ||||||||
| 893 | |||||||||
| 894 | QualType getCanonicalType() const; | ||||||||
| 895 | |||||||||
| 896 | /// Return this type with all of the instance-specific qualifiers | ||||||||
| 897 | /// removed, but without removing any qualifiers that may have been applied | ||||||||
| 898 | /// through typedefs. | ||||||||
| 899 | QualType getLocalUnqualifiedType() const { return QualType(getTypePtr(), 0); } | ||||||||
| 900 | |||||||||
| 901 | /// Retrieve the unqualified variant of the given type, | ||||||||
| 902 | /// removing as little sugar as possible. | ||||||||
| 903 | /// | ||||||||
| 904 | /// This routine looks through various kinds of sugar to find the | ||||||||
| 905 | /// least-desugared type that is unqualified. For example, given: | ||||||||
| 906 | /// | ||||||||
| 907 | /// \code | ||||||||
| 908 | /// typedef int Integer; | ||||||||
| 909 | /// typedef const Integer CInteger; | ||||||||
| 910 | /// typedef CInteger DifferenceType; | ||||||||
| 911 | /// \endcode | ||||||||
| 912 | /// | ||||||||
| 913 | /// Executing \c getUnqualifiedType() on the type \c DifferenceType will | ||||||||
| 914 | /// desugar until we hit the type \c Integer, which has no qualifiers on it. | ||||||||
| 915 | /// | ||||||||
| 916 | /// The resulting type might still be qualified if it's sugar for an array | ||||||||
| 917 | /// type. To strip qualifiers even from within a sugared array type, use | ||||||||
| 918 | /// ASTContext::getUnqualifiedArrayType. | ||||||||
| 919 | inline QualType getUnqualifiedType() const; | ||||||||
| 920 | |||||||||
| 921 | /// Retrieve the unqualified variant of the given type, removing as little | ||||||||
| 922 | /// sugar as possible. | ||||||||
| 923 | /// | ||||||||
| 924 | /// Like getUnqualifiedType(), but also returns the set of | ||||||||
| 925 | /// qualifiers that were built up. | ||||||||
| 926 | /// | ||||||||
| 927 | /// The resulting type might still be qualified if it's sugar for an array | ||||||||
| 928 | /// type. To strip qualifiers even from within a sugared array type, use | ||||||||
| 929 | /// ASTContext::getUnqualifiedArrayType. | ||||||||
| 930 | inline SplitQualType getSplitUnqualifiedType() const; | ||||||||
| 931 | |||||||||
| 932 | /// Determine whether this type is more qualified than the other | ||||||||
| 933 | /// given type, requiring exact equality for non-CVR qualifiers. | ||||||||
| 934 | bool isMoreQualifiedThan(QualType Other) const; | ||||||||
| 935 | |||||||||
| 936 | /// Determine whether this type is at least as qualified as the other | ||||||||
| 937 | /// given type, requiring exact equality for non-CVR qualifiers. | ||||||||
| 938 | bool isAtLeastAsQualifiedAs(QualType Other) const; | ||||||||
| 939 | |||||||||
| 940 | QualType getNonReferenceType() const; | ||||||||
| 941 | |||||||||
| 942 | /// Determine the type of a (typically non-lvalue) expression with the | ||||||||
| 943 | /// specified result type. | ||||||||
| 944 | /// | ||||||||
| 945 | /// This routine should be used for expressions for which the return type is | ||||||||
| 946 | /// explicitly specified (e.g., in a cast or call) and isn't necessarily | ||||||||
| 947 | /// an lvalue. It removes a top-level reference (since there are no | ||||||||
| 948 | /// expressions of reference type) and deletes top-level cvr-qualifiers | ||||||||
| 949 | /// from non-class types (in C++) or all types (in C). | ||||||||
| 950 | QualType getNonLValueExprType(const ASTContext &Context) const; | ||||||||
| 951 | |||||||||
| 952 | /// Remove an outer pack expansion type (if any) from this type. Used as part | ||||||||
| 953 | /// of converting the type of a declaration to the type of an expression that | ||||||||
| 954 | /// references that expression. It's meaningless for an expression to have a | ||||||||
| 955 | /// pack expansion type. | ||||||||
| 956 | QualType getNonPackExpansionType() const; | ||||||||
| 957 | |||||||||
| 958 | /// Return the specified type with any "sugar" removed from | ||||||||
| 959 | /// the type. This takes off typedefs, typeof's etc. If the outer level of | ||||||||
| 960 | /// the type is already concrete, it returns it unmodified. This is similar | ||||||||
| 961 | /// to getting the canonical type, but it doesn't remove *all* typedefs. For | ||||||||
| 962 | /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is | ||||||||
| 963 | /// concrete. | ||||||||
| 964 | /// | ||||||||
| 965 | /// Qualifiers are left in place. | ||||||||
| 966 | QualType getDesugaredType(const ASTContext &Context) const { | ||||||||
| 967 | return getDesugaredType(*this, Context); | ||||||||
| 968 | } | ||||||||
| 969 | |||||||||
| 970 | SplitQualType getSplitDesugaredType() const { | ||||||||
| 971 | return getSplitDesugaredType(*this); | ||||||||
| 972 | } | ||||||||
| 973 | |||||||||
| 974 | /// Return the specified type with one level of "sugar" removed from | ||||||||
| 975 | /// the type. | ||||||||
| 976 | /// | ||||||||
| 977 | /// This routine takes off the first typedef, typeof, etc. If the outer level | ||||||||
| 978 | /// of the type is already concrete, it returns it unmodified. | ||||||||
| 979 | QualType getSingleStepDesugaredType(const ASTContext &Context) const { | ||||||||
| 980 | return getSingleStepDesugaredTypeImpl(*this, Context); | ||||||||
| 981 | } | ||||||||
| 982 | |||||||||
| 983 | /// Returns the specified type after dropping any | ||||||||
| 984 | /// outer-level parentheses. | ||||||||
| 985 | QualType IgnoreParens() const { | ||||||||
| 986 | if (isa<ParenType>(*this)) | ||||||||
| 987 | return QualType::IgnoreParens(*this); | ||||||||
| 988 | return *this; | ||||||||
| 989 | } | ||||||||
| 990 | |||||||||
| 991 | /// Indicate whether the specified types and qualifiers are identical. | ||||||||
| 992 | friend bool operator==(const QualType &LHS, const QualType &RHS) { | ||||||||
| 993 | return LHS.Value == RHS.Value; | ||||||||
| 994 | } | ||||||||
| 995 | friend bool operator!=(const QualType &LHS, const QualType &RHS) { | ||||||||
| 996 | return LHS.Value != RHS.Value; | ||||||||
| 997 | } | ||||||||
| 998 | friend bool operator<(const QualType &LHS, const QualType &RHS) { | ||||||||
| 999 | return LHS.Value < RHS.Value; | ||||||||
| 1000 | } | ||||||||
| 1001 | |||||||||
| 1002 | static std::string getAsString(SplitQualType split, | ||||||||
| 1003 | const PrintingPolicy &Policy) { | ||||||||
| 1004 | return getAsString(split.Ty, split.Quals, Policy); | ||||||||
| 1005 | } | ||||||||
| 1006 | static std::string getAsString(const Type *ty, Qualifiers qs, | ||||||||
| 1007 | const PrintingPolicy &Policy); | ||||||||
| 1008 | |||||||||
| 1009 | std::string getAsString() const; | ||||||||
| 1010 | std::string getAsString(const PrintingPolicy &Policy) const; | ||||||||
| 1011 | |||||||||
| 1012 | void print(raw_ostream &OS, const PrintingPolicy &Policy, | ||||||||
| 1013 | const Twine &PlaceHolder = Twine(), | ||||||||
| 1014 | unsigned Indentation = 0) const; | ||||||||
| 1015 | |||||||||
| 1016 | static void print(SplitQualType split, raw_ostream &OS, | ||||||||
| 1017 | const PrintingPolicy &policy, const Twine &PlaceHolder, | ||||||||
| 1018 | unsigned Indentation = 0) { | ||||||||
| 1019 | return print(split.Ty, split.Quals, OS, policy, PlaceHolder, Indentation); | ||||||||
| 1020 | } | ||||||||
| 1021 | |||||||||
| 1022 | static void print(const Type *ty, Qualifiers qs, | ||||||||
| 1023 | raw_ostream &OS, const PrintingPolicy &policy, | ||||||||
| 1024 | const Twine &PlaceHolder, | ||||||||
| 1025 | unsigned Indentation = 0); | ||||||||
| 1026 | |||||||||
| 1027 | void getAsStringInternal(std::string &Str, | ||||||||
| 1028 | const PrintingPolicy &Policy) const; | ||||||||
| 1029 | |||||||||
| 1030 | static void getAsStringInternal(SplitQualType split, std::string &out, | ||||||||
| 1031 | const PrintingPolicy &policy) { | ||||||||
| 1032 | return getAsStringInternal(split.Ty, split.Quals, out, policy); | ||||||||
| 1033 | } | ||||||||
| 1034 | |||||||||
| 1035 | static void getAsStringInternal(const Type *ty, Qualifiers qs, | ||||||||
| 1036 | std::string &out, | ||||||||
| 1037 | const PrintingPolicy &policy); | ||||||||
| 1038 | |||||||||
| 1039 | class StreamedQualTypeHelper { | ||||||||
| 1040 | const QualType &T; | ||||||||
| 1041 | const PrintingPolicy &Policy; | ||||||||
| 1042 | const Twine &PlaceHolder; | ||||||||
| 1043 | unsigned Indentation; | ||||||||
| 1044 | |||||||||
| 1045 | public: | ||||||||
| 1046 | StreamedQualTypeHelper(const QualType &T, const PrintingPolicy &Policy, | ||||||||
| 1047 | const Twine &PlaceHolder, unsigned Indentation) | ||||||||
| 1048 | : T(T), Policy(Policy), PlaceHolder(PlaceHolder), | ||||||||
| 1049 | Indentation(Indentation) {} | ||||||||
| 1050 | |||||||||
| 1051 | friend raw_ostream &operator<<(raw_ostream &OS, | ||||||||
| 1052 | const StreamedQualTypeHelper &SQT) { | ||||||||
| 1053 | SQT.T.print(OS, SQT.Policy, SQT.PlaceHolder, SQT.Indentation); | ||||||||
| 1054 | return OS; | ||||||||
| 1055 | } | ||||||||
| 1056 | }; | ||||||||
| 1057 | |||||||||
| 1058 | StreamedQualTypeHelper stream(const PrintingPolicy &Policy, | ||||||||
| 1059 | const Twine &PlaceHolder = Twine(), | ||||||||
| 1060 | unsigned Indentation = 0) const { | ||||||||
| 1061 | return StreamedQualTypeHelper(*this, Policy, PlaceHolder, Indentation); | ||||||||
| 1062 | } | ||||||||
| 1063 | |||||||||
| 1064 | void dump(const char *s) const; | ||||||||
| 1065 | void dump() const; | ||||||||
| 1066 | void dump(llvm::raw_ostream &OS, const ASTContext &Context) const; | ||||||||
| 1067 | |||||||||
| 1068 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
| 1069 | ID.AddPointer(getAsOpaquePtr()); | ||||||||
| 1070 | } | ||||||||
| 1071 | |||||||||
| 1072 | /// Check if this type has any address space qualifier. | ||||||||
| 1073 | inline bool hasAddressSpace() const; | ||||||||
| 1074 | |||||||||
| 1075 | /// Return the address space of this type. | ||||||||
| 1076 | inline LangAS getAddressSpace() const; | ||||||||
| 1077 | |||||||||
| 1078 | /// Returns true if address space qualifiers overlap with T address space | ||||||||
| 1079 | /// qualifiers. | ||||||||
| 1080 | /// OpenCL C defines conversion rules for pointers to different address spaces | ||||||||
| 1081 | /// and notion of overlapping address spaces. | ||||||||
| 1082 | /// CL1.1 or CL1.2: | ||||||||
| 1083 | /// address spaces overlap iff they are they same. | ||||||||
| 1084 | /// OpenCL C v2.0 s6.5.5 adds: | ||||||||
| 1085 | /// __generic overlaps with any address space except for __constant. | ||||||||
| 1086 | bool isAddressSpaceOverlapping(QualType T) const { | ||||||||
| 1087 | Qualifiers Q = getQualifiers(); | ||||||||
| 1088 | Qualifiers TQ = T.getQualifiers(); | ||||||||
| 1089 | // Address spaces overlap if at least one of them is a superset of another | ||||||||
| 1090 | return Q.isAddressSpaceSupersetOf(TQ) || TQ.isAddressSpaceSupersetOf(Q); | ||||||||
| 1091 | } | ||||||||
| 1092 | |||||||||
| 1093 | /// Returns gc attribute of this type. | ||||||||
| 1094 | inline Qualifiers::GC getObjCGCAttr() const; | ||||||||
| 1095 | |||||||||
| 1096 | /// true when Type is objc's weak. | ||||||||
| 1097 | bool isObjCGCWeak() const { | ||||||||
| 1098 | return getObjCGCAttr() == Qualifiers::Weak; | ||||||||
| 1099 | } | ||||||||
| 1100 | |||||||||
| 1101 | /// true when Type is objc's strong. | ||||||||
| 1102 | bool isObjCGCStrong() const { | ||||||||
| 1103 | return getObjCGCAttr() == Qualifiers::Strong; | ||||||||
| 1104 | } | ||||||||
| 1105 | |||||||||
| 1106 | /// Returns lifetime attribute of this type. | ||||||||
| 1107 | Qualifiers::ObjCLifetime getObjCLifetime() const { | ||||||||
| 1108 | return getQualifiers().getObjCLifetime(); | ||||||||
| 1109 | } | ||||||||
| 1110 | |||||||||
| 1111 | bool hasNonTrivialObjCLifetime() const { | ||||||||
| 1112 | return getQualifiers().hasNonTrivialObjCLifetime(); | ||||||||
| 1113 | } | ||||||||
| 1114 | |||||||||
| 1115 | bool hasStrongOrWeakObjCLifetime() const { | ||||||||
| 1116 | return getQualifiers().hasStrongOrWeakObjCLifetime(); | ||||||||
| 1117 | } | ||||||||
| 1118 | |||||||||
| 1119 | // true when Type is objc's weak and weak is enabled but ARC isn't. | ||||||||
| 1120 | bool isNonWeakInMRRWithObjCWeak(const ASTContext &Context) const; | ||||||||
| 1121 | |||||||||
| 1122 | enum PrimitiveDefaultInitializeKind { | ||||||||
| 1123 | /// The type does not fall into any of the following categories. Note that | ||||||||
| 1124 | /// this case is zero-valued so that values of this enum can be used as a | ||||||||
| 1125 | /// boolean condition for non-triviality. | ||||||||
| 1126 | PDIK_Trivial, | ||||||||
| 1127 | |||||||||
| 1128 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
| 1129 | /// with the ARC __strong qualifier. | ||||||||
| 1130 | PDIK_ARCStrong, | ||||||||
| 1131 | |||||||||
| 1132 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
| 1133 | /// with the ARC __weak qualifier. | ||||||||
| 1134 | PDIK_ARCWeak, | ||||||||
| 1135 | |||||||||
| 1136 | /// The type is a struct containing a field whose type is not PCK_Trivial. | ||||||||
| 1137 | PDIK_Struct | ||||||||
| 1138 | }; | ||||||||
| 1139 | |||||||||
| 1140 | /// Functions to query basic properties of non-trivial C struct types. | ||||||||
| 1141 | |||||||||
| 1142 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||
| 1143 | /// transitively containing this type to be non-trivial to default initialize | ||||||||
| 1144 | /// and return the kind. | ||||||||
| 1145 | PrimitiveDefaultInitializeKind | ||||||||
| 1146 | isNonTrivialToPrimitiveDefaultInitialize() const; | ||||||||
| 1147 | |||||||||
| 1148 | enum PrimitiveCopyKind { | ||||||||
| 1149 | /// The type does not fall into any of the following categories. Note that | ||||||||
| 1150 | /// this case is zero-valued so that values of this enum can be used as a | ||||||||
| 1151 | /// boolean condition for non-triviality. | ||||||||
| 1152 | PCK_Trivial, | ||||||||
| 1153 | |||||||||
| 1154 | /// The type would be trivial except that it is volatile-qualified. Types | ||||||||
| 1155 | /// that fall into one of the other non-trivial cases may additionally be | ||||||||
| 1156 | /// volatile-qualified. | ||||||||
| 1157 | PCK_VolatileTrivial, | ||||||||
| 1158 | |||||||||
| 1159 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
| 1160 | /// with the ARC __strong qualifier. | ||||||||
| 1161 | PCK_ARCStrong, | ||||||||
| 1162 | |||||||||
| 1163 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||
| 1164 | /// with the ARC __weak qualifier. | ||||||||
| 1165 | PCK_ARCWeak, | ||||||||
| 1166 | |||||||||
| 1167 | /// The type is a struct containing a field whose type is neither | ||||||||
| 1168 | /// PCK_Trivial nor PCK_VolatileTrivial. | ||||||||
| 1169 | /// Note that a C++ struct type does not necessarily match this; C++ copying | ||||||||
| 1170 | /// semantics are too complex to express here, in part because they depend | ||||||||
| 1171 | /// on the exact constructor or assignment operator that is chosen by | ||||||||
| 1172 | /// overload resolution to do the copy. | ||||||||
| 1173 | PCK_Struct | ||||||||
| 1174 | }; | ||||||||
| 1175 | |||||||||
| 1176 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||
| 1177 | /// transitively containing this type to be non-trivial to copy and return the | ||||||||
| 1178 | /// kind. | ||||||||
| 1179 | PrimitiveCopyKind isNonTrivialToPrimitiveCopy() const; | ||||||||
| 1180 | |||||||||
| 1181 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||
| 1182 | /// transitively containing this type to be non-trivial to destructively | ||||||||
| 1183 | /// move and return the kind. Destructive move in this context is a C++-style | ||||||||
| 1184 | /// move in which the source object is placed in a valid but unspecified state | ||||||||
| 1185 | /// after it is moved, as opposed to a truly destructive move in which the | ||||||||
| 1186 | /// source object is placed in an uninitialized state. | ||||||||
| 1187 | PrimitiveCopyKind isNonTrivialToPrimitiveDestructiveMove() const; | ||||||||
| 1188 | |||||||||
| 1189 | enum DestructionKind { | ||||||||
| 1190 | DK_none, | ||||||||
| 1191 | DK_cxx_destructor, | ||||||||
| 1192 | DK_objc_strong_lifetime, | ||||||||
| 1193 | DK_objc_weak_lifetime, | ||||||||
| 1194 | DK_nontrivial_c_struct | ||||||||
| 1195 | }; | ||||||||
| 1196 | |||||||||
| 1197 | /// Returns a nonzero value if objects of this type require | ||||||||
| 1198 | /// non-trivial work to clean up after. Non-zero because it's | ||||||||
| 1199 | /// conceivable that qualifiers (objc_gc(weak)?) could make | ||||||||
| 1200 | /// something require destruction. | ||||||||
| 1201 | DestructionKind isDestructedType() const { | ||||||||
| 1202 | return isDestructedTypeImpl(*this); | ||||||||
| 1203 | } | ||||||||
| 1204 | |||||||||
| 1205 | /// Check if this is or contains a C union that is non-trivial to | ||||||||
| 1206 | /// default-initialize, which is a union that has a member that is non-trivial | ||||||||
| 1207 | /// to default-initialize. If this returns true, | ||||||||
| 1208 | /// isNonTrivialToPrimitiveDefaultInitialize returns PDIK_Struct. | ||||||||
| 1209 | bool hasNonTrivialToPrimitiveDefaultInitializeCUnion() const; | ||||||||
| 1210 | |||||||||
| 1211 | /// Check if this is or contains a C union that is non-trivial to destruct, | ||||||||
| 1212 | /// which is a union that has a member that is non-trivial to destruct. If | ||||||||
| 1213 | /// this returns true, isDestructedType returns DK_nontrivial_c_struct. | ||||||||
| 1214 | bool hasNonTrivialToPrimitiveDestructCUnion() const; | ||||||||
| 1215 | |||||||||
| 1216 | /// Check if this is or contains a C union that is non-trivial to copy, which | ||||||||
| 1217 | /// is a union that has a member that is non-trivial to copy. If this returns | ||||||||
| 1218 | /// true, isNonTrivialToPrimitiveCopy returns PCK_Struct. | ||||||||
| 1219 | bool hasNonTrivialToPrimitiveCopyCUnion() const; | ||||||||
| 1220 | |||||||||
| 1221 | /// Determine whether expressions of the given type are forbidden | ||||||||
| 1222 | /// from being lvalues in C. | ||||||||
| 1223 | /// | ||||||||
| 1224 | /// The expression types that are forbidden to be lvalues are: | ||||||||
| 1225 | /// - 'void', but not qualified void | ||||||||
| 1226 | /// - function types | ||||||||
| 1227 | /// | ||||||||
| 1228 | /// The exact rule here is C99 6.3.2.1: | ||||||||
| 1229 | /// An lvalue is an expression with an object type or an incomplete | ||||||||
| 1230 | /// type other than void. | ||||||||
| 1231 | bool isCForbiddenLValueType() const; | ||||||||
| 1232 | |||||||||
| 1233 | /// Substitute type arguments for the Objective-C type parameters used in the | ||||||||
| 1234 | /// subject type. | ||||||||
| 1235 | /// | ||||||||
| 1236 | /// \param ctx ASTContext in which the type exists. | ||||||||
| 1237 | /// | ||||||||
| 1238 | /// \param typeArgs The type arguments that will be substituted for the | ||||||||
| 1239 | /// Objective-C type parameters in the subject type, which are generally | ||||||||
| 1240 | /// computed via \c Type::getObjCSubstitutions. If empty, the type | ||||||||
| 1241 | /// parameters will be replaced with their bounds or id/Class, as appropriate | ||||||||
| 1242 | /// for the context. | ||||||||
| 1243 | /// | ||||||||
| 1244 | /// \param context The context in which the subject type was written. | ||||||||
| 1245 | /// | ||||||||
| 1246 | /// \returns the resulting type. | ||||||||
| 1247 | QualType substObjCTypeArgs(ASTContext &ctx, | ||||||||
| 1248 | ArrayRef<QualType> typeArgs, | ||||||||
| 1249 | ObjCSubstitutionContext context) const; | ||||||||
| 1250 | |||||||||
| 1251 | /// Substitute type arguments from an object type for the Objective-C type | ||||||||
| 1252 | /// parameters used in the subject type. | ||||||||
| 1253 | /// | ||||||||
| 1254 | /// This operation combines the computation of type arguments for | ||||||||
| 1255 | /// substitution (\c Type::getObjCSubstitutions) with the actual process of | ||||||||
| 1256 | /// substitution (\c QualType::substObjCTypeArgs) for the convenience of | ||||||||
| 1257 | /// callers that need to perform a single substitution in isolation. | ||||||||
| 1258 | /// | ||||||||
| 1259 | /// \param objectType The type of the object whose member type we're | ||||||||
| 1260 | /// substituting into. For example, this might be the receiver of a message | ||||||||
| 1261 | /// or the base of a property access. | ||||||||
| 1262 | /// | ||||||||
| 1263 | /// \param dc The declaration context from which the subject type was | ||||||||
| 1264 | /// retrieved, which indicates (for example) which type parameters should | ||||||||
| 1265 | /// be substituted. | ||||||||
| 1266 | /// | ||||||||
| 1267 | /// \param context The context in which the subject type was written. | ||||||||
| 1268 | /// | ||||||||
| 1269 | /// \returns the subject type after replacing all of the Objective-C type | ||||||||
| 1270 | /// parameters with their corresponding arguments. | ||||||||
| 1271 | QualType substObjCMemberType(QualType objectType, | ||||||||
| 1272 | const DeclContext *dc, | ||||||||
| 1273 | ObjCSubstitutionContext context) const; | ||||||||
| 1274 | |||||||||
| 1275 | /// Strip Objective-C "__kindof" types from the given type. | ||||||||
| 1276 | QualType stripObjCKindOfType(const ASTContext &ctx) const; | ||||||||
| 1277 | |||||||||
| 1278 | /// Remove all qualifiers including _Atomic. | ||||||||
| 1279 | QualType getAtomicUnqualifiedType() const; | ||||||||
| 1280 | |||||||||
| 1281 | private: | ||||||||
| 1282 | // These methods are implemented in a separate translation unit; | ||||||||
| 1283 | // "static"-ize them to avoid creating temporary QualTypes in the | ||||||||
| 1284 | // caller. | ||||||||
| 1285 | static bool isConstant(QualType T, const ASTContext& Ctx); | ||||||||
| 1286 | static QualType getDesugaredType(QualType T, const ASTContext &Context); | ||||||||
| 1287 | static SplitQualType getSplitDesugaredType(QualType T); | ||||||||
| 1288 | static SplitQualType getSplitUnqualifiedTypeImpl(QualType type); | ||||||||
| 1289 | static QualType getSingleStepDesugaredTypeImpl(QualType type, | ||||||||
| 1290 | const ASTContext &C); | ||||||||
| 1291 | static QualType IgnoreParens(QualType T); | ||||||||
| 1292 | static DestructionKind isDestructedTypeImpl(QualType type); | ||||||||
| 1293 | |||||||||
| 1294 | /// Check if \param RD is or contains a non-trivial C union. | ||||||||
| 1295 | static bool hasNonTrivialToPrimitiveDefaultInitializeCUnion(const RecordDecl *RD); | ||||||||
| 1296 | static bool hasNonTrivialToPrimitiveDestructCUnion(const RecordDecl *RD); | ||||||||
| 1297 | static bool hasNonTrivialToPrimitiveCopyCUnion(const RecordDecl *RD); | ||||||||
| 1298 | }; | ||||||||
| 1299 | |||||||||
| 1300 | } // namespace clang | ||||||||
| 1301 | |||||||||
| 1302 | namespace llvm { | ||||||||
| 1303 | |||||||||
| 1304 | /// Implement simplify_type for QualType, so that we can dyn_cast from QualType | ||||||||
| 1305 | /// to a specific Type class. | ||||||||
| 1306 | template<> struct simplify_type< ::clang::QualType> { | ||||||||
| 1307 | using SimpleType = const ::clang::Type *; | ||||||||
| 1308 | |||||||||
| 1309 | static SimpleType getSimplifiedValue(::clang::QualType Val) { | ||||||||
| 1310 | return Val.getTypePtr(); | ||||||||
| 1311 | } | ||||||||
| 1312 | }; | ||||||||
| 1313 | |||||||||
| 1314 | // Teach SmallPtrSet that QualType is "basically a pointer". | ||||||||
| 1315 | template<> | ||||||||
| 1316 | struct PointerLikeTypeTraits<clang::QualType> { | ||||||||
| 1317 | static inline void *getAsVoidPointer(clang::QualType P) { | ||||||||
| 1318 | return P.getAsOpaquePtr(); | ||||||||
| 1319 | } | ||||||||
| 1320 | |||||||||
| 1321 | static inline clang::QualType getFromVoidPointer(void *P) { | ||||||||
| 1322 | return clang::QualType::getFromOpaquePtr(P); | ||||||||
| 1323 | } | ||||||||
| 1324 | |||||||||
| 1325 | // Various qualifiers go in low bits. | ||||||||
| 1326 | static constexpr int NumLowBitsAvailable = 0; | ||||||||
| 1327 | }; | ||||||||
| 1328 | |||||||||
| 1329 | } // namespace llvm | ||||||||
| 1330 | |||||||||
| 1331 | namespace clang { | ||||||||
| 1332 | |||||||||
| 1333 | /// Base class that is common to both the \c ExtQuals and \c Type | ||||||||
| 1334 | /// classes, which allows \c QualType to access the common fields between the | ||||||||
| 1335 | /// two. | ||||||||
| 1336 | class ExtQualsTypeCommonBase { | ||||||||
| 1337 | friend class ExtQuals; | ||||||||
| 1338 | friend class QualType; | ||||||||
| 1339 | friend class Type; | ||||||||
| 1340 | |||||||||
| 1341 | /// The "base" type of an extended qualifiers type (\c ExtQuals) or | ||||||||
| 1342 | /// a self-referential pointer (for \c Type). | ||||||||
| 1343 | /// | ||||||||
| 1344 | /// This pointer allows an efficient mapping from a QualType to its | ||||||||
| 1345 | /// underlying type pointer. | ||||||||
| 1346 | const Type *const BaseType; | ||||||||
| 1347 | |||||||||
| 1348 | /// The canonical type of this type. A QualType. | ||||||||
| 1349 | QualType CanonicalType; | ||||||||
| 1350 | |||||||||
| 1351 | ExtQualsTypeCommonBase(const Type *baseType, QualType canon) | ||||||||
| 1352 | : BaseType(baseType), CanonicalType(canon) {} | ||||||||
| 1353 | }; | ||||||||
| 1354 | |||||||||
| 1355 | /// We can encode up to four bits in the low bits of a | ||||||||
| 1356 | /// type pointer, but there are many more type qualifiers that we want | ||||||||
| 1357 | /// to be able to apply to an arbitrary type. Therefore we have this | ||||||||
| 1358 | /// struct, intended to be heap-allocated and used by QualType to | ||||||||
| 1359 | /// store qualifiers. | ||||||||
| 1360 | /// | ||||||||
| 1361 | /// The current design tags the 'const', 'restrict', and 'volatile' qualifiers | ||||||||
| 1362 | /// in three low bits on the QualType pointer; a fourth bit records whether | ||||||||
| 1363 | /// the pointer is an ExtQuals node. The extended qualifiers (address spaces, | ||||||||
| 1364 | /// Objective-C GC attributes) are much more rare. | ||||||||
| 1365 | class ExtQuals : public ExtQualsTypeCommonBase, public llvm::FoldingSetNode { | ||||||||
| 1366 | // NOTE: changing the fast qualifiers should be straightforward as | ||||||||
| 1367 | // long as you don't make 'const' non-fast. | ||||||||
| 1368 | // 1. Qualifiers: | ||||||||
| 1369 | // a) Modify the bitmasks (Qualifiers::TQ and DeclSpec::TQ). | ||||||||
| 1370 | // Fast qualifiers must occupy the low-order bits. | ||||||||
| 1371 | // b) Update Qualifiers::FastWidth and FastMask. | ||||||||
| 1372 | // 2. QualType: | ||||||||
| 1373 | // a) Update is{Volatile,Restrict}Qualified(), defined inline. | ||||||||
| 1374 | // b) Update remove{Volatile,Restrict}, defined near the end of | ||||||||
| 1375 | // this header. | ||||||||
| 1376 | // 3. ASTContext: | ||||||||
| 1377 | // a) Update get{Volatile,Restrict}Type. | ||||||||
| 1378 | |||||||||
| 1379 | /// The immutable set of qualifiers applied by this node. Always contains | ||||||||
| 1380 | /// extended qualifiers. | ||||||||
| 1381 | Qualifiers Quals; | ||||||||
| 1382 | |||||||||
| 1383 | ExtQuals *this_() { return this; } | ||||||||
| 1384 | |||||||||
| 1385 | public: | ||||||||
| 1386 | ExtQuals(const Type *baseType, QualType canon, Qualifiers quals) | ||||||||
| 1387 | : ExtQualsTypeCommonBase(baseType, | ||||||||
| 1388 | canon.isNull() ? QualType(this_(), 0) : canon), | ||||||||
| 1389 | Quals(quals) { | ||||||||
| 1390 | assert(Quals.hasNonFastQualifiers()((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1391, __PRETTY_FUNCTION__)) | ||||||||
| 1391 | && "ExtQuals created with no fast qualifiers")((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1391, __PRETTY_FUNCTION__)); | ||||||||
| 1392 | assert(!Quals.hasFastQualifiers()((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1393, __PRETTY_FUNCTION__)) | ||||||||
| 1393 | && "ExtQuals created with fast qualifiers")((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1393, __PRETTY_FUNCTION__)); | ||||||||
| 1394 | } | ||||||||
| 1395 | |||||||||
| 1396 | Qualifiers getQualifiers() const { return Quals; } | ||||||||
| 1397 | |||||||||
| 1398 | bool hasObjCGCAttr() const { return Quals.hasObjCGCAttr(); } | ||||||||
| 1399 | Qualifiers::GC getObjCGCAttr() const { return Quals.getObjCGCAttr(); } | ||||||||
| 1400 | |||||||||
| 1401 | bool hasObjCLifetime() const { return Quals.hasObjCLifetime(); } | ||||||||
| 1402 | Qualifiers::ObjCLifetime getObjCLifetime() const { | ||||||||
| 1403 | return Quals.getObjCLifetime(); | ||||||||
| 1404 | } | ||||||||
| 1405 | |||||||||
| 1406 | bool hasAddressSpace() const { return Quals.hasAddressSpace(); } | ||||||||
| 1407 | LangAS getAddressSpace() const { return Quals.getAddressSpace(); } | ||||||||
| 1408 | |||||||||
| 1409 | const Type *getBaseType() const { return BaseType; } | ||||||||
| 1410 | |||||||||
| 1411 | public: | ||||||||
| 1412 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
| 1413 | Profile(ID, getBaseType(), Quals); | ||||||||
| 1414 | } | ||||||||
| 1415 | |||||||||
| 1416 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 1417 | const Type *BaseType, | ||||||||
| 1418 | Qualifiers Quals) { | ||||||||
| 1419 | assert(!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!")((!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"fast qualifiers in ExtQuals hash!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1419, __PRETTY_FUNCTION__)); | ||||||||
| 1420 | ID.AddPointer(BaseType); | ||||||||
| 1421 | Quals.Profile(ID); | ||||||||
| 1422 | } | ||||||||
| 1423 | }; | ||||||||
| 1424 | |||||||||
| 1425 | /// The kind of C++11 ref-qualifier associated with a function type. | ||||||||
| 1426 | /// This determines whether a member function's "this" object can be an | ||||||||
| 1427 | /// lvalue, rvalue, or neither. | ||||||||
| 1428 | enum RefQualifierKind { | ||||||||
| 1429 | /// No ref-qualifier was provided. | ||||||||
| 1430 | RQ_None = 0, | ||||||||
| 1431 | |||||||||
| 1432 | /// An lvalue ref-qualifier was provided (\c &). | ||||||||
| 1433 | RQ_LValue, | ||||||||
| 1434 | |||||||||
| 1435 | /// An rvalue ref-qualifier was provided (\c &&). | ||||||||
| 1436 | RQ_RValue | ||||||||
| 1437 | }; | ||||||||
| 1438 | |||||||||
| 1439 | /// Which keyword(s) were used to create an AutoType. | ||||||||
| 1440 | enum class AutoTypeKeyword { | ||||||||
| 1441 | /// auto | ||||||||
| 1442 | Auto, | ||||||||
| 1443 | |||||||||
| 1444 | /// decltype(auto) | ||||||||
| 1445 | DecltypeAuto, | ||||||||
| 1446 | |||||||||
| 1447 | /// __auto_type (GNU extension) | ||||||||
| 1448 | GNUAutoType | ||||||||
| 1449 | }; | ||||||||
| 1450 | |||||||||
| 1451 | /// The base class of the type hierarchy. | ||||||||
| 1452 | /// | ||||||||
| 1453 | /// A central concept with types is that each type always has a canonical | ||||||||
| 1454 | /// type. A canonical type is the type with any typedef names stripped out | ||||||||
| 1455 | /// of it or the types it references. For example, consider: | ||||||||
| 1456 | /// | ||||||||
| 1457 | /// typedef int foo; | ||||||||
| 1458 | /// typedef foo* bar; | ||||||||
| 1459 | /// 'int *' 'foo *' 'bar' | ||||||||
| 1460 | /// | ||||||||
| 1461 | /// There will be a Type object created for 'int'. Since int is canonical, its | ||||||||
| 1462 | /// CanonicalType pointer points to itself. There is also a Type for 'foo' (a | ||||||||
| 1463 | /// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next | ||||||||
| 1464 | /// there is a PointerType that represents 'int*', which, like 'int', is | ||||||||
| 1465 | /// canonical. Finally, there is a PointerType type for 'foo*' whose canonical | ||||||||
| 1466 | /// type is 'int*', and there is a TypedefType for 'bar', whose canonical type | ||||||||
| 1467 | /// is also 'int*'. | ||||||||
| 1468 | /// | ||||||||
| 1469 | /// Non-canonical types are useful for emitting diagnostics, without losing | ||||||||
| 1470 | /// information about typedefs being used. Canonical types are useful for type | ||||||||
| 1471 | /// comparisons (they allow by-pointer equality tests) and useful for reasoning | ||||||||
| 1472 | /// about whether something has a particular form (e.g. is a function type), | ||||||||
| 1473 | /// because they implicitly, recursively, strip all typedefs out of a type. | ||||||||
| 1474 | /// | ||||||||
| 1475 | /// Types, once created, are immutable. | ||||||||
| 1476 | /// | ||||||||
| 1477 | class alignas(8) Type : public ExtQualsTypeCommonBase { | ||||||||
| 1478 | public: | ||||||||
| 1479 | enum TypeClass { | ||||||||
| 1480 | #define TYPE(Class, Base) Class, | ||||||||
| 1481 | #define LAST_TYPE(Class) TypeLast = Class | ||||||||
| 1482 | #define ABSTRACT_TYPE(Class, Base) | ||||||||
| 1483 | #include "clang/AST/TypeNodes.inc" | ||||||||
| 1484 | }; | ||||||||
| 1485 | |||||||||
| 1486 | private: | ||||||||
| 1487 | /// Bitfields required by the Type class. | ||||||||
| 1488 | class TypeBitfields { | ||||||||
| 1489 | friend class Type; | ||||||||
| 1490 | template <class T> friend class TypePropertyCache; | ||||||||
| 1491 | |||||||||
| 1492 | /// TypeClass bitfield - Enum that specifies what subclass this belongs to. | ||||||||
| 1493 | unsigned TC : 8; | ||||||||
| 1494 | |||||||||
| 1495 | /// Store information on the type dependency. | ||||||||
| 1496 | unsigned Dependence : llvm::BitWidth<TypeDependence>; | ||||||||
| 1497 | |||||||||
| 1498 | /// True if the cache (i.e. the bitfields here starting with | ||||||||
| 1499 | /// 'Cache') is valid. | ||||||||
| 1500 | mutable unsigned CacheValid : 1; | ||||||||
| 1501 | |||||||||
| 1502 | /// Linkage of this type. | ||||||||
| 1503 | mutable unsigned CachedLinkage : 3; | ||||||||
| 1504 | |||||||||
| 1505 | /// Whether this type involves and local or unnamed types. | ||||||||
| 1506 | mutable unsigned CachedLocalOrUnnamed : 1; | ||||||||
| 1507 | |||||||||
| 1508 | /// Whether this type comes from an AST file. | ||||||||
| 1509 | mutable unsigned FromAST : 1; | ||||||||
| 1510 | |||||||||
| 1511 | bool isCacheValid() const { | ||||||||
| 1512 | return CacheValid; | ||||||||
| 1513 | } | ||||||||
| 1514 | |||||||||
| 1515 | Linkage getLinkage() const { | ||||||||
| 1516 | assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache" ) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1516, __PRETTY_FUNCTION__)); | ||||||||
| 1517 | return static_cast<Linkage>(CachedLinkage); | ||||||||
| 1518 | } | ||||||||
| 1519 | |||||||||
| 1520 | bool hasLocalOrUnnamedType() const { | ||||||||
| 1521 | assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache" ) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 1521, __PRETTY_FUNCTION__)); | ||||||||
| 1522 | return CachedLocalOrUnnamed; | ||||||||
| 1523 | } | ||||||||
| 1524 | }; | ||||||||
| 1525 | enum { NumTypeBits = 8 + llvm::BitWidth<TypeDependence> + 6 }; | ||||||||
| 1526 | |||||||||
| 1527 | protected: | ||||||||
| 1528 | // These classes allow subclasses to somewhat cleanly pack bitfields | ||||||||
| 1529 | // into Type. | ||||||||
| 1530 | |||||||||
| 1531 | class ArrayTypeBitfields { | ||||||||
| 1532 | friend class ArrayType; | ||||||||
| 1533 | |||||||||
| 1534 | unsigned : NumTypeBits; | ||||||||
| 1535 | |||||||||
| 1536 | /// CVR qualifiers from declarations like | ||||||||
| 1537 | /// 'int X[static restrict 4]'. For function parameters only. | ||||||||
| 1538 | unsigned IndexTypeQuals : 3; | ||||||||
| 1539 | |||||||||
| 1540 | /// Storage class qualifiers from declarations like | ||||||||
| 1541 | /// 'int X[static restrict 4]'. For function parameters only. | ||||||||
| 1542 | /// Actually an ArrayType::ArraySizeModifier. | ||||||||
| 1543 | unsigned SizeModifier : 3; | ||||||||
| 1544 | }; | ||||||||
| 1545 | |||||||||
| 1546 | class ConstantArrayTypeBitfields { | ||||||||
| 1547 | friend class ConstantArrayType; | ||||||||
| 1548 | |||||||||
| 1549 | unsigned : NumTypeBits + 3 + 3; | ||||||||
| 1550 | |||||||||
| 1551 | /// Whether we have a stored size expression. | ||||||||
| 1552 | unsigned HasStoredSizeExpr : 1; | ||||||||
| 1553 | }; | ||||||||
| 1554 | |||||||||
| 1555 | class BuiltinTypeBitfields { | ||||||||
| 1556 | friend class BuiltinType; | ||||||||
| 1557 | |||||||||
| 1558 | unsigned : NumTypeBits; | ||||||||
| 1559 | |||||||||
| 1560 | /// The kind (BuiltinType::Kind) of builtin type this is. | ||||||||
| 1561 | unsigned Kind : 8; | ||||||||
| 1562 | }; | ||||||||
| 1563 | |||||||||
| 1564 | /// FunctionTypeBitfields store various bits belonging to FunctionProtoType. | ||||||||
| 1565 | /// Only common bits are stored here. Additional uncommon bits are stored | ||||||||
| 1566 | /// in a trailing object after FunctionProtoType. | ||||||||
| 1567 | class FunctionTypeBitfields { | ||||||||
| 1568 | friend class FunctionProtoType; | ||||||||
| 1569 | friend class FunctionType; | ||||||||
| 1570 | |||||||||
| 1571 | unsigned : NumTypeBits; | ||||||||
| 1572 | |||||||||
| 1573 | /// Extra information which affects how the function is called, like | ||||||||
| 1574 | /// regparm and the calling convention. | ||||||||
| 1575 | unsigned ExtInfo : 13; | ||||||||
| 1576 | |||||||||
| 1577 | /// The ref-qualifier associated with a \c FunctionProtoType. | ||||||||
| 1578 | /// | ||||||||
| 1579 | /// This is a value of type \c RefQualifierKind. | ||||||||
| 1580 | unsigned RefQualifier : 2; | ||||||||
| 1581 | |||||||||
| 1582 | /// Used only by FunctionProtoType, put here to pack with the | ||||||||
| 1583 | /// other bitfields. | ||||||||
| 1584 | /// The qualifiers are part of FunctionProtoType because... | ||||||||
| 1585 | /// | ||||||||
| 1586 | /// C++ 8.3.5p4: The return type, the parameter type list and the | ||||||||
| 1587 | /// cv-qualifier-seq, [...], are part of the function type. | ||||||||
| 1588 | unsigned FastTypeQuals : Qualifiers::FastWidth; | ||||||||
| 1589 | /// Whether this function has extended Qualifiers. | ||||||||
| 1590 | unsigned HasExtQuals : 1; | ||||||||
| 1591 | |||||||||
| 1592 | /// The number of parameters this function has, not counting '...'. | ||||||||
| 1593 | /// According to [implimits] 8 bits should be enough here but this is | ||||||||
| 1594 | /// somewhat easy to exceed with metaprogramming and so we would like to | ||||||||
| 1595 | /// keep NumParams as wide as reasonably possible. | ||||||||
| 1596 | unsigned NumParams : 16; | ||||||||
| 1597 | |||||||||
| 1598 | /// The type of exception specification this function has. | ||||||||
| 1599 | unsigned ExceptionSpecType : 4; | ||||||||
| 1600 | |||||||||
| 1601 | /// Whether this function has extended parameter information. | ||||||||
| 1602 | unsigned HasExtParameterInfos : 1; | ||||||||
| 1603 | |||||||||
| 1604 | /// Whether the function is variadic. | ||||||||
| 1605 | unsigned Variadic : 1; | ||||||||
| 1606 | |||||||||
| 1607 | /// Whether this function has a trailing return type. | ||||||||
| 1608 | unsigned HasTrailingReturn : 1; | ||||||||
| 1609 | }; | ||||||||
| 1610 | |||||||||
| 1611 | class ObjCObjectTypeBitfields { | ||||||||
| 1612 | friend class ObjCObjectType; | ||||||||
| 1613 | |||||||||
| 1614 | unsigned : NumTypeBits; | ||||||||
| 1615 | |||||||||
| 1616 | /// The number of type arguments stored directly on this object type. | ||||||||
| 1617 | unsigned NumTypeArgs : 7; | ||||||||
| 1618 | |||||||||
| 1619 | /// The number of protocols stored directly on this object type. | ||||||||
| 1620 | unsigned NumProtocols : 6; | ||||||||
| 1621 | |||||||||
| 1622 | /// Whether this is a "kindof" type. | ||||||||
| 1623 | unsigned IsKindOf : 1; | ||||||||
| 1624 | }; | ||||||||
| 1625 | |||||||||
| 1626 | class ReferenceTypeBitfields { | ||||||||
| 1627 | friend class ReferenceType; | ||||||||
| 1628 | |||||||||
| 1629 | unsigned : NumTypeBits; | ||||||||
| 1630 | |||||||||
| 1631 | /// True if the type was originally spelled with an lvalue sigil. | ||||||||
| 1632 | /// This is never true of rvalue references but can also be false | ||||||||
| 1633 | /// on lvalue references because of C++0x [dcl.typedef]p9, | ||||||||
| 1634 | /// as follows: | ||||||||
| 1635 | /// | ||||||||
| 1636 | /// typedef int &ref; // lvalue, spelled lvalue | ||||||||
| 1637 | /// typedef int &&rvref; // rvalue | ||||||||
| 1638 | /// ref &a; // lvalue, inner ref, spelled lvalue | ||||||||
| 1639 | /// ref &&a; // lvalue, inner ref | ||||||||
| 1640 | /// rvref &a; // lvalue, inner ref, spelled lvalue | ||||||||
| 1641 | /// rvref &&a; // rvalue, inner ref | ||||||||
| 1642 | unsigned SpelledAsLValue : 1; | ||||||||
| 1643 | |||||||||
| 1644 | /// True if the inner type is a reference type. This only happens | ||||||||
| 1645 | /// in non-canonical forms. | ||||||||
| 1646 | unsigned InnerRef : 1; | ||||||||
| 1647 | }; | ||||||||
| 1648 | |||||||||
| 1649 | class TypeWithKeywordBitfields { | ||||||||
| 1650 | friend class TypeWithKeyword; | ||||||||
| 1651 | |||||||||
| 1652 | unsigned : NumTypeBits; | ||||||||
| 1653 | |||||||||
| 1654 | /// An ElaboratedTypeKeyword. 8 bits for efficient access. | ||||||||
| 1655 | unsigned Keyword : 8; | ||||||||
| 1656 | }; | ||||||||
| 1657 | |||||||||
| 1658 | enum { NumTypeWithKeywordBits = 8 }; | ||||||||
| 1659 | |||||||||
| 1660 | class ElaboratedTypeBitfields { | ||||||||
| 1661 | friend class ElaboratedType; | ||||||||
| 1662 | |||||||||
| 1663 | unsigned : NumTypeBits; | ||||||||
| 1664 | unsigned : NumTypeWithKeywordBits; | ||||||||
| 1665 | |||||||||
| 1666 | /// Whether the ElaboratedType has a trailing OwnedTagDecl. | ||||||||
| 1667 | unsigned HasOwnedTagDecl : 1; | ||||||||
| 1668 | }; | ||||||||
| 1669 | |||||||||
| 1670 | class VectorTypeBitfields { | ||||||||
| 1671 | friend class VectorType; | ||||||||
| 1672 | friend class DependentVectorType; | ||||||||
| 1673 | |||||||||
| 1674 | unsigned : NumTypeBits; | ||||||||
| 1675 | |||||||||
| 1676 | /// The kind of vector, either a generic vector type or some | ||||||||
| 1677 | /// target-specific vector type such as for AltiVec or Neon. | ||||||||
| 1678 | unsigned VecKind : 3; | ||||||||
| 1679 | /// The number of elements in the vector. | ||||||||
| 1680 | uint32_t NumElements; | ||||||||
| 1681 | }; | ||||||||
| 1682 | |||||||||
| 1683 | class AttributedTypeBitfields { | ||||||||
| 1684 | friend class AttributedType; | ||||||||
| 1685 | |||||||||
| 1686 | unsigned : NumTypeBits; | ||||||||
| 1687 | |||||||||
| 1688 | /// An AttributedType::Kind | ||||||||
| 1689 | unsigned AttrKind : 32 - NumTypeBits; | ||||||||
| 1690 | }; | ||||||||
| 1691 | |||||||||
| 1692 | class AutoTypeBitfields { | ||||||||
| 1693 | friend class AutoType; | ||||||||
| 1694 | |||||||||
| 1695 | unsigned : NumTypeBits; | ||||||||
| 1696 | |||||||||
| 1697 | /// Was this placeholder type spelled as 'auto', 'decltype(auto)', | ||||||||
| 1698 | /// or '__auto_type'? AutoTypeKeyword value. | ||||||||
| 1699 | unsigned Keyword : 2; | ||||||||
| 1700 | |||||||||
| 1701 | /// The number of template arguments in the type-constraints, which is | ||||||||
| 1702 | /// expected to be able to hold at least 1024 according to [implimits]. | ||||||||
| 1703 | /// However as this limit is somewhat easy to hit with template | ||||||||
| 1704 | /// metaprogramming we'd prefer to keep it as large as possible. | ||||||||
| 1705 | /// At the moment it has been left as a non-bitfield since this type | ||||||||
| 1706 | /// safely fits in 64 bits as an unsigned, so there is no reason to | ||||||||
| 1707 | /// introduce the performance impact of a bitfield. | ||||||||
| 1708 | unsigned NumArgs; | ||||||||
| 1709 | }; | ||||||||
| 1710 | |||||||||
| 1711 | class SubstTemplateTypeParmPackTypeBitfields { | ||||||||
| 1712 | friend class SubstTemplateTypeParmPackType; | ||||||||
| 1713 | |||||||||
| 1714 | unsigned : NumTypeBits; | ||||||||
| 1715 | |||||||||
| 1716 | /// The number of template arguments in \c Arguments, which is | ||||||||
| 1717 | /// expected to be able to hold at least 1024 according to [implimits]. | ||||||||
| 1718 | /// However as this limit is somewhat easy to hit with template | ||||||||
| 1719 | /// metaprogramming we'd prefer to keep it as large as possible. | ||||||||
| 1720 | /// At the moment it has been left as a non-bitfield since this type | ||||||||
| 1721 | /// safely fits in 64 bits as an unsigned, so there is no reason to | ||||||||
| 1722 | /// introduce the performance impact of a bitfield. | ||||||||
| 1723 | unsigned NumArgs; | ||||||||
| 1724 | }; | ||||||||
| 1725 | |||||||||
| 1726 | class TemplateSpecializationTypeBitfields { | ||||||||
| 1727 | friend class TemplateSpecializationType; | ||||||||
| 1728 | |||||||||
| 1729 | unsigned : NumTypeBits; | ||||||||
| 1730 | |||||||||
| 1731 | /// Whether this template specialization type is a substituted type alias. | ||||||||
| 1732 | unsigned TypeAlias : 1; | ||||||||
| 1733 | |||||||||
| 1734 | /// The number of template arguments named in this class template | ||||||||
| 1735 | /// specialization, which is expected to be able to hold at least 1024 | ||||||||
| 1736 | /// according to [implimits]. However, as this limit is somewhat easy to | ||||||||
| 1737 | /// hit with template metaprogramming we'd prefer to keep it as large | ||||||||
| 1738 | /// as possible. At the moment it has been left as a non-bitfield since | ||||||||
| 1739 | /// this type safely fits in 64 bits as an unsigned, so there is no reason | ||||||||
| 1740 | /// to introduce the performance impact of a bitfield. | ||||||||
| 1741 | unsigned NumArgs; | ||||||||
| 1742 | }; | ||||||||
| 1743 | |||||||||
| 1744 | class DependentTemplateSpecializationTypeBitfields { | ||||||||
| 1745 | friend class DependentTemplateSpecializationType; | ||||||||
| 1746 | |||||||||
| 1747 | unsigned : NumTypeBits; | ||||||||
| 1748 | unsigned : NumTypeWithKeywordBits; | ||||||||
| 1749 | |||||||||
| 1750 | /// The number of template arguments named in this class template | ||||||||
| 1751 | /// specialization, which is expected to be able to hold at least 1024 | ||||||||
| 1752 | /// according to [implimits]. However, as this limit is somewhat easy to | ||||||||
| 1753 | /// hit with template metaprogramming we'd prefer to keep it as large | ||||||||
| 1754 | /// as possible. At the moment it has been left as a non-bitfield since | ||||||||
| 1755 | /// this type safely fits in 64 bits as an unsigned, so there is no reason | ||||||||
| 1756 | /// to introduce the performance impact of a bitfield. | ||||||||
| 1757 | unsigned NumArgs; | ||||||||
| 1758 | }; | ||||||||
| 1759 | |||||||||
| 1760 | class PackExpansionTypeBitfields { | ||||||||
| 1761 | friend class PackExpansionType; | ||||||||
| 1762 | |||||||||
| 1763 | unsigned : NumTypeBits; | ||||||||
| 1764 | |||||||||
| 1765 | /// The number of expansions that this pack expansion will | ||||||||
| 1766 | /// generate when substituted (+1), which is expected to be able to | ||||||||
| 1767 | /// hold at least 1024 according to [implimits]. However, as this limit | ||||||||
| 1768 | /// is somewhat easy to hit with template metaprogramming we'd prefer to | ||||||||
| 1769 | /// keep it as large as possible. At the moment it has been left as a | ||||||||
| 1770 | /// non-bitfield since this type safely fits in 64 bits as an unsigned, so | ||||||||
| 1771 | /// there is no reason to introduce the performance impact of a bitfield. | ||||||||
| 1772 | /// | ||||||||
| 1773 | /// This field will only have a non-zero value when some of the parameter | ||||||||
| 1774 | /// packs that occur within the pattern have been substituted but others | ||||||||
| 1775 | /// have not. | ||||||||
| 1776 | unsigned NumExpansions; | ||||||||
| 1777 | }; | ||||||||
| 1778 | |||||||||
| 1779 | union { | ||||||||
| 1780 | TypeBitfields TypeBits; | ||||||||
| 1781 | ArrayTypeBitfields ArrayTypeBits; | ||||||||
| 1782 | ConstantArrayTypeBitfields ConstantArrayTypeBits; | ||||||||
| 1783 | AttributedTypeBitfields AttributedTypeBits; | ||||||||
| 1784 | AutoTypeBitfields AutoTypeBits; | ||||||||
| 1785 | BuiltinTypeBitfields BuiltinTypeBits; | ||||||||
| 1786 | FunctionTypeBitfields FunctionTypeBits; | ||||||||
| 1787 | ObjCObjectTypeBitfields ObjCObjectTypeBits; | ||||||||
| 1788 | ReferenceTypeBitfields ReferenceTypeBits; | ||||||||
| 1789 | TypeWithKeywordBitfields TypeWithKeywordBits; | ||||||||
| 1790 | ElaboratedTypeBitfields ElaboratedTypeBits; | ||||||||
| 1791 | VectorTypeBitfields VectorTypeBits; | ||||||||
| 1792 | SubstTemplateTypeParmPackTypeBitfields SubstTemplateTypeParmPackTypeBits; | ||||||||
| 1793 | TemplateSpecializationTypeBitfields TemplateSpecializationTypeBits; | ||||||||
| 1794 | DependentTemplateSpecializationTypeBitfields | ||||||||
| 1795 | DependentTemplateSpecializationTypeBits; | ||||||||
| 1796 | PackExpansionTypeBitfields PackExpansionTypeBits; | ||||||||
| 1797 | }; | ||||||||
| 1798 | |||||||||
| 1799 | private: | ||||||||
| 1800 | template <class T> friend class TypePropertyCache; | ||||||||
| 1801 | |||||||||
| 1802 | /// Set whether this type comes from an AST file. | ||||||||
| 1803 | void setFromAST(bool V = true) const { | ||||||||
| 1804 | TypeBits.FromAST = V; | ||||||||
| 1805 | } | ||||||||
| 1806 | |||||||||
| 1807 | protected: | ||||||||
| 1808 | friend class ASTContext; | ||||||||
| 1809 | |||||||||
| 1810 | Type(TypeClass tc, QualType canon, TypeDependence Dependence) | ||||||||
| 1811 | : ExtQualsTypeCommonBase(this, | ||||||||
| 1812 | canon.isNull() ? QualType(this_(), 0) : canon) { | ||||||||
| 1813 | static_assert(sizeof(*this) <= 8 + sizeof(ExtQualsTypeCommonBase), | ||||||||
| 1814 | "changing bitfields changed sizeof(Type)!"); | ||||||||
| 1815 | static_assert(alignof(decltype(*this)) % sizeof(void *) == 0, | ||||||||
| 1816 | "Insufficient alignment!"); | ||||||||
| 1817 | TypeBits.TC = tc; | ||||||||
| 1818 | TypeBits.Dependence = static_cast<unsigned>(Dependence); | ||||||||
| 1819 | TypeBits.CacheValid = false; | ||||||||
| 1820 | TypeBits.CachedLocalOrUnnamed = false; | ||||||||
| 1821 | TypeBits.CachedLinkage = NoLinkage; | ||||||||
| 1822 | TypeBits.FromAST = false; | ||||||||
| 1823 | } | ||||||||
| 1824 | |||||||||
| 1825 | // silence VC++ warning C4355: 'this' : used in base member initializer list | ||||||||
| 1826 | Type *this_() { return this; } | ||||||||
| 1827 | |||||||||
| 1828 | void setDependence(TypeDependence D) { | ||||||||
| 1829 | TypeBits.Dependence = static_cast<unsigned>(D); | ||||||||
| 1830 | } | ||||||||
| 1831 | |||||||||
| 1832 | void addDependence(TypeDependence D) { setDependence(getDependence() | D); } | ||||||||
| 1833 | |||||||||
| 1834 | public: | ||||||||
| 1835 | friend class ASTReader; | ||||||||
| 1836 | friend class ASTWriter; | ||||||||
| 1837 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
| 1838 | template <class T> friend class serialization::AbstractTypeWriter; | ||||||||
| 1839 | |||||||||
| 1840 | Type(const Type &) = delete; | ||||||||
| 1841 | Type(Type &&) = delete; | ||||||||
| 1842 | Type &operator=(const Type &) = delete; | ||||||||
| 1843 | Type &operator=(Type &&) = delete; | ||||||||
| 1844 | |||||||||
| 1845 | TypeClass getTypeClass() const { return static_cast<TypeClass>(TypeBits.TC); } | ||||||||
| 1846 | |||||||||
| 1847 | /// Whether this type comes from an AST file. | ||||||||
| 1848 | bool isFromAST() const { return TypeBits.FromAST; } | ||||||||
| 1849 | |||||||||
| 1850 | /// Whether this type is or contains an unexpanded parameter | ||||||||
| 1851 | /// pack, used to support C++0x variadic templates. | ||||||||
| 1852 | /// | ||||||||
| 1853 | /// A type that contains a parameter pack shall be expanded by the | ||||||||
| 1854 | /// ellipsis operator at some point. For example, the typedef in the | ||||||||
| 1855 | /// following example contains an unexpanded parameter pack 'T': | ||||||||
| 1856 | /// | ||||||||
| 1857 | /// \code | ||||||||
| 1858 | /// template<typename ...T> | ||||||||
| 1859 | /// struct X { | ||||||||
| 1860 | /// typedef T* pointer_types; // ill-formed; T is a parameter pack. | ||||||||
| 1861 | /// }; | ||||||||
| 1862 | /// \endcode | ||||||||
| 1863 | /// | ||||||||
| 1864 | /// Note that this routine does not specify which | ||||||||
| 1865 | bool containsUnexpandedParameterPack() const { | ||||||||
| 1866 | return getDependence() & TypeDependence::UnexpandedPack; | ||||||||
| 1867 | } | ||||||||
| 1868 | |||||||||
| 1869 | /// Determines if this type would be canonical if it had no further | ||||||||
| 1870 | /// qualification. | ||||||||
| 1871 | bool isCanonicalUnqualified() const { | ||||||||
| 1872 | return CanonicalType == QualType(this, 0); | ||||||||
| 1873 | } | ||||||||
| 1874 | |||||||||
| 1875 | /// Pull a single level of sugar off of this locally-unqualified type. | ||||||||
| 1876 | /// Users should generally prefer SplitQualType::getSingleStepDesugaredType() | ||||||||
| 1877 | /// or QualType::getSingleStepDesugaredType(const ASTContext&). | ||||||||
| 1878 | QualType getLocallyUnqualifiedSingleStepDesugaredType() const; | ||||||||
| 1879 | |||||||||
| 1880 | /// As an extension, we classify types as one of "sized" or "sizeless"; | ||||||||
| 1881 | /// every type is one or the other. Standard types are all sized; | ||||||||
| 1882 | /// sizeless types are purely an extension. | ||||||||
| 1883 | /// | ||||||||
| 1884 | /// Sizeless types contain data with no specified size, alignment, | ||||||||
| 1885 | /// or layout. | ||||||||
| 1886 | bool isSizelessType() const; | ||||||||
| 1887 | bool isSizelessBuiltinType() const; | ||||||||
| 1888 | |||||||||
| 1889 | /// Determines if this is a vector-length-specific type (VLST), i.e. a | ||||||||
| 1890 | /// sizeless type with the 'arm_sve_vector_bits' attribute applied. | ||||||||
| 1891 | bool isVLST() const; | ||||||||
| 1892 | /// Determines if this is a sizeless type supported by the | ||||||||
| 1893 | /// 'arm_sve_vector_bits' type attribute, which can be applied to a single | ||||||||
| 1894 | /// SVE vector or predicate, excluding tuple types such as svint32x4_t. | ||||||||
| 1895 | bool isVLSTBuiltinType() const; | ||||||||
| 1896 | |||||||||
| 1897 | /// Types are partitioned into 3 broad categories (C99 6.2.5p1): | ||||||||
| 1898 | /// object types, function types, and incomplete types. | ||||||||
| 1899 | |||||||||
| 1900 | /// Return true if this is an incomplete type. | ||||||||
| 1901 | /// A type that can describe objects, but which lacks information needed to | ||||||||
| 1902 | /// determine its size (e.g. void, or a fwd declared struct). Clients of this | ||||||||
| 1903 | /// routine will need to determine if the size is actually required. | ||||||||
| 1904 | /// | ||||||||
| 1905 | /// Def If non-null, and the type refers to some kind of declaration | ||||||||
| 1906 | /// that can be completed (such as a C struct, C++ class, or Objective-C | ||||||||
| 1907 | /// class), will be set to the declaration. | ||||||||
| 1908 | bool isIncompleteType(NamedDecl **Def = nullptr) const; | ||||||||
| 1909 | |||||||||
| 1910 | /// Return true if this is an incomplete or object | ||||||||
| 1911 | /// type, in other words, not a function type. | ||||||||
| 1912 | bool isIncompleteOrObjectType() const { | ||||||||
| 1913 | return !isFunctionType(); | ||||||||
| 1914 | } | ||||||||
| 1915 | |||||||||
| 1916 | /// Determine whether this type is an object type. | ||||||||
| 1917 | bool isObjectType() const { | ||||||||
| 1918 | // C++ [basic.types]p8: | ||||||||
| 1919 | // An object type is a (possibly cv-qualified) type that is not a | ||||||||
| 1920 | // function type, not a reference type, and not a void type. | ||||||||
| 1921 | return !isReferenceType() && !isFunctionType() && !isVoidType(); | ||||||||
| 1922 | } | ||||||||
| 1923 | |||||||||
| 1924 | /// Return true if this is a literal type | ||||||||
| 1925 | /// (C++11 [basic.types]p10) | ||||||||
| 1926 | bool isLiteralType(const ASTContext &Ctx) const; | ||||||||
| 1927 | |||||||||
| 1928 | /// Test if this type is a standard-layout type. | ||||||||
| 1929 | /// (C++0x [basic.type]p9) | ||||||||
| 1930 | bool isStandardLayoutType() const; | ||||||||
| 1931 | |||||||||
| 1932 | /// Helper methods to distinguish type categories. All type predicates | ||||||||
| 1933 | /// operate on the canonical type, ignoring typedefs and qualifiers. | ||||||||
| 1934 | |||||||||
| 1935 | /// Returns true if the type is a builtin type. | ||||||||
| 1936 | bool isBuiltinType() const; | ||||||||
| 1937 | |||||||||
| 1938 | /// Test for a particular builtin type. | ||||||||
| 1939 | bool isSpecificBuiltinType(unsigned K) const; | ||||||||
| 1940 | |||||||||
| 1941 | /// Test for a type which does not represent an actual type-system type but | ||||||||
| 1942 | /// is instead used as a placeholder for various convenient purposes within | ||||||||
| 1943 | /// Clang. All such types are BuiltinTypes. | ||||||||
| 1944 | bool isPlaceholderType() const; | ||||||||
| 1945 | const BuiltinType *getAsPlaceholderType() const; | ||||||||
| 1946 | |||||||||
| 1947 | /// Test for a specific placeholder type. | ||||||||
| 1948 | bool isSpecificPlaceholderType(unsigned K) const; | ||||||||
| 1949 | |||||||||
| 1950 | /// Test for a placeholder type other than Overload; see | ||||||||
| 1951 | /// BuiltinType::isNonOverloadPlaceholderType. | ||||||||
| 1952 | bool isNonOverloadPlaceholderType() const; | ||||||||
| 1953 | |||||||||
| 1954 | /// isIntegerType() does *not* include complex integers (a GCC extension). | ||||||||
| 1955 | /// isComplexIntegerType() can be used to test for complex integers. | ||||||||
| 1956 | bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) | ||||||||
| 1957 | bool isEnumeralType() const; | ||||||||
| 1958 | |||||||||
| 1959 | /// Determine whether this type is a scoped enumeration type. | ||||||||
| 1960 | bool isScopedEnumeralType() const; | ||||||||
| 1961 | bool isBooleanType() const; | ||||||||
| 1962 | bool isCharType() const; | ||||||||
| 1963 | bool isWideCharType() const; | ||||||||
| 1964 | bool isChar8Type() const; | ||||||||
| 1965 | bool isChar16Type() const; | ||||||||
| 1966 | bool isChar32Type() const; | ||||||||
| 1967 | bool isAnyCharacterType() const; | ||||||||
| 1968 | bool isIntegralType(const ASTContext &Ctx) const; | ||||||||
| 1969 | |||||||||
| 1970 | /// Determine whether this type is an integral or enumeration type. | ||||||||
| 1971 | bool isIntegralOrEnumerationType() const; | ||||||||
| 1972 | |||||||||
| 1973 | /// Determine whether this type is an integral or unscoped enumeration type. | ||||||||
| 1974 | bool isIntegralOrUnscopedEnumerationType() const; | ||||||||
| 1975 | bool isUnscopedEnumerationType() const; | ||||||||
| 1976 | |||||||||
| 1977 | /// Floating point categories. | ||||||||
| 1978 | bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) | ||||||||
| 1979 | /// isComplexType() does *not* include complex integers (a GCC extension). | ||||||||
| 1980 | /// isComplexIntegerType() can be used to test for complex integers. | ||||||||
| 1981 | bool isComplexType() const; // C99 6.2.5p11 (complex) | ||||||||
| 1982 | bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. | ||||||||
| 1983 | bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) | ||||||||
| 1984 | bool isHalfType() const; // OpenCL 6.1.1.1, NEON (IEEE 754-2008 half) | ||||||||
| 1985 | bool isFloat16Type() const; // C11 extension ISO/IEC TS 18661 | ||||||||
| 1986 | bool isBFloat16Type() const; | ||||||||
| 1987 | bool isFloat128Type() const; | ||||||||
| 1988 | bool isRealType() const; // C99 6.2.5p17 (real floating + integer) | ||||||||
| 1989 | bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) | ||||||||
| 1990 | bool isVoidType() const; // C99 6.2.5p19 | ||||||||
| 1991 | bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) | ||||||||
| 1992 | bool isAggregateType() const; | ||||||||
| 1993 | bool isFundamentalType() const; | ||||||||
| 1994 | bool isCompoundType() const; | ||||||||
| 1995 | |||||||||
| 1996 | // Type Predicates: Check to see if this type is structurally the specified | ||||||||
| 1997 | // type, ignoring typedefs and qualifiers. | ||||||||
| 1998 | bool isFunctionType() const; | ||||||||
| 1999 | bool isFunctionNoProtoType() const { return getAs<FunctionNoProtoType>(); } | ||||||||
| 2000 | bool isFunctionProtoType() const { return getAs<FunctionProtoType>(); } | ||||||||
| 2001 | bool isPointerType() const; | ||||||||
| 2002 | bool isAnyPointerType() const; // Any C pointer or ObjC object pointer | ||||||||
| 2003 | bool isBlockPointerType() const; | ||||||||
| 2004 | bool isVoidPointerType() const; | ||||||||
| 2005 | bool isReferenceType() const; | ||||||||
| 2006 | bool isLValueReferenceType() const; | ||||||||
| 2007 | bool isRValueReferenceType() const; | ||||||||
| 2008 | bool isObjectPointerType() const; | ||||||||
| 2009 | bool isFunctionPointerType() const; | ||||||||
| 2010 | bool isFunctionReferenceType() const; | ||||||||
| 2011 | bool isMemberPointerType() const; | ||||||||
| 2012 | bool isMemberFunctionPointerType() const; | ||||||||
| 2013 | bool isMemberDataPointerType() const; | ||||||||
| 2014 | bool isArrayType() const; | ||||||||
| 2015 | bool isConstantArrayType() const; | ||||||||
| 2016 | bool isIncompleteArrayType() const; | ||||||||
| 2017 | bool isVariableArrayType() const; | ||||||||
| 2018 | bool isDependentSizedArrayType() const; | ||||||||
| 2019 | bool isRecordType() const; | ||||||||
| 2020 | bool isClassType() const; | ||||||||
| 2021 | bool isStructureType() const; | ||||||||
| 2022 | bool isObjCBoxableRecordType() const; | ||||||||
| 2023 | bool isInterfaceType() const; | ||||||||
| 2024 | bool isStructureOrClassType() const; | ||||||||
| 2025 | bool isUnionType() const; | ||||||||
| 2026 | bool isComplexIntegerType() const; // GCC _Complex integer type. | ||||||||
| 2027 | bool isVectorType() const; // GCC vector type. | ||||||||
| 2028 | bool isExtVectorType() const; // Extended vector type. | ||||||||
| 2029 | bool isMatrixType() const; // Matrix type. | ||||||||
| 2030 | bool isConstantMatrixType() const; // Constant matrix type. | ||||||||
| 2031 | bool isDependentAddressSpaceType() const; // value-dependent address space qualifier | ||||||||
| 2032 | bool isObjCObjectPointerType() const; // pointer to ObjC object | ||||||||
| 2033 | bool isObjCRetainableType() const; // ObjC object or block pointer | ||||||||
| 2034 | bool isObjCLifetimeType() const; // (array of)* retainable type | ||||||||
| 2035 | bool isObjCIndirectLifetimeType() const; // (pointer to)* lifetime type | ||||||||
| 2036 | bool isObjCNSObjectType() const; // __attribute__((NSObject)) | ||||||||
| 2037 | bool isObjCIndependentClassType() const; // __attribute__((objc_independent_class)) | ||||||||
| 2038 | // FIXME: change this to 'raw' interface type, so we can used 'interface' type | ||||||||
| 2039 | // for the common case. | ||||||||
| 2040 | bool isObjCObjectType() const; // NSString or typeof(*(id)0) | ||||||||
| 2041 | bool isObjCQualifiedInterfaceType() const; // NSString<foo> | ||||||||
| 2042 | bool isObjCQualifiedIdType() const; // id<foo> | ||||||||
| 2043 | bool isObjCQualifiedClassType() const; // Class<foo> | ||||||||
| 2044 | bool isObjCObjectOrInterfaceType() const; | ||||||||
| 2045 | bool isObjCIdType() const; // id | ||||||||
| 2046 | bool isDecltypeType() const; | ||||||||
| 2047 | /// Was this type written with the special inert-in-ARC __unsafe_unretained | ||||||||
| 2048 | /// qualifier? | ||||||||
| 2049 | /// | ||||||||
| 2050 | /// This approximates the answer to the following question: if this | ||||||||
| 2051 | /// translation unit were compiled in ARC, would this type be qualified | ||||||||
| 2052 | /// with __unsafe_unretained? | ||||||||
| 2053 | bool isObjCInertUnsafeUnretainedType() const { | ||||||||
| 2054 | return hasAttr(attr::ObjCInertUnsafeUnretained); | ||||||||
| 2055 | } | ||||||||
| 2056 | |||||||||
| 2057 | /// Whether the type is Objective-C 'id' or a __kindof type of an | ||||||||
| 2058 | /// object type, e.g., __kindof NSView * or __kindof id | ||||||||
| 2059 | /// <NSCopying>. | ||||||||
| 2060 | /// | ||||||||
| 2061 | /// \param bound Will be set to the bound on non-id subtype types, | ||||||||
| 2062 | /// which will be (possibly specialized) Objective-C class type, or | ||||||||
| 2063 | /// null for 'id. | ||||||||
| 2064 | bool isObjCIdOrObjectKindOfType(const ASTContext &ctx, | ||||||||
| 2065 | const ObjCObjectType *&bound) const; | ||||||||
| 2066 | |||||||||
| 2067 | bool isObjCClassType() const; // Class | ||||||||
| 2068 | |||||||||
| 2069 | /// Whether the type is Objective-C 'Class' or a __kindof type of an | ||||||||
| 2070 | /// Class type, e.g., __kindof Class <NSCopying>. | ||||||||
| 2071 | /// | ||||||||
| 2072 | /// Unlike \c isObjCIdOrObjectKindOfType, there is no relevant bound | ||||||||
| 2073 | /// here because Objective-C's type system cannot express "a class | ||||||||
| 2074 | /// object for a subclass of NSFoo". | ||||||||
| 2075 | bool isObjCClassOrClassKindOfType() const; | ||||||||
| 2076 | |||||||||
| 2077 | bool isBlockCompatibleObjCPointerType(ASTContext &ctx) const; | ||||||||
| 2078 | bool isObjCSelType() const; // Class | ||||||||
| 2079 | bool isObjCBuiltinType() const; // 'id' or 'Class' | ||||||||
| 2080 | bool isObjCARCBridgableType() const; | ||||||||
| 2081 | bool isCARCBridgableType() const; | ||||||||
| 2082 | bool isTemplateTypeParmType() const; // C++ template type parameter | ||||||||
| 2083 | bool isNullPtrType() const; // C++11 std::nullptr_t | ||||||||
| 2084 | bool isNothrowT() const; // C++ std::nothrow_t | ||||||||
| 2085 | bool isAlignValT() const; // C++17 std::align_val_t | ||||||||
| 2086 | bool isStdByteType() const; // C++17 std::byte | ||||||||
| 2087 | bool isAtomicType() const; // C11 _Atomic() | ||||||||
| 2088 | bool isUndeducedAutoType() const; // C++11 auto or | ||||||||
| 2089 | // C++14 decltype(auto) | ||||||||
| 2090 | |||||||||
| 2091 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
| 2092 | bool is##Id##Type() const; | ||||||||
| 2093 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
| 2094 | |||||||||
| 2095 | bool isImageType() const; // Any OpenCL image type | ||||||||
| 2096 | |||||||||
| 2097 | bool isSamplerT() const; // OpenCL sampler_t | ||||||||
| 2098 | bool isEventT() const; // OpenCL event_t | ||||||||
| 2099 | bool isClkEventT() const; // OpenCL clk_event_t | ||||||||
| 2100 | bool isQueueT() const; // OpenCL queue_t | ||||||||
| 2101 | bool isReserveIDT() const; // OpenCL reserve_id_t | ||||||||
| 2102 | |||||||||
| 2103 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
| 2104 | bool is##Id##Type() const; | ||||||||
| 2105 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 2106 | // Type defined in cl_intel_device_side_avc_motion_estimation OpenCL extension | ||||||||
| 2107 | bool isOCLIntelSubgroupAVCType() const; | ||||||||
| 2108 | bool isOCLExtOpaqueType() const; // Any OpenCL extension type | ||||||||
| 2109 | |||||||||
| 2110 | bool isPipeType() const; // OpenCL pipe type | ||||||||
| 2111 | bool isExtIntType() const; // Extended Int Type | ||||||||
| 2112 | bool isOpenCLSpecificType() const; // Any OpenCL specific type | ||||||||
| 2113 | |||||||||
| 2114 | /// Determines if this type, which must satisfy | ||||||||
| 2115 | /// isObjCLifetimeType(), is implicitly __unsafe_unretained rather | ||||||||
| 2116 | /// than implicitly __strong. | ||||||||
| 2117 | bool isObjCARCImplicitlyUnretainedType() const; | ||||||||
| 2118 | |||||||||
| 2119 | /// Check if the type is the CUDA device builtin surface type. | ||||||||
| 2120 | bool isCUDADeviceBuiltinSurfaceType() const; | ||||||||
| 2121 | /// Check if the type is the CUDA device builtin texture type. | ||||||||
| 2122 | bool isCUDADeviceBuiltinTextureType() const; | ||||||||
| 2123 | |||||||||
| 2124 | /// Return the implicit lifetime for this type, which must not be dependent. | ||||||||
| 2125 | Qualifiers::ObjCLifetime getObjCARCImplicitLifetime() const; | ||||||||
| 2126 | |||||||||
| 2127 | enum ScalarTypeKind { | ||||||||
| 2128 | STK_CPointer, | ||||||||
| 2129 | STK_BlockPointer, | ||||||||
| 2130 | STK_ObjCObjectPointer, | ||||||||
| 2131 | STK_MemberPointer, | ||||||||
| 2132 | STK_Bool, | ||||||||
| 2133 | STK_Integral, | ||||||||
| 2134 | STK_Floating, | ||||||||
| 2135 | STK_IntegralComplex, | ||||||||
| 2136 | STK_FloatingComplex, | ||||||||
| 2137 | STK_FixedPoint | ||||||||
| 2138 | }; | ||||||||
| 2139 | |||||||||
| 2140 | /// Given that this is a scalar type, classify it. | ||||||||
| 2141 | ScalarTypeKind getScalarTypeKind() const; | ||||||||
| 2142 | |||||||||
| 2143 | TypeDependence getDependence() const { | ||||||||
| 2144 | return static_cast<TypeDependence>(TypeBits.Dependence); | ||||||||
| 2145 | } | ||||||||
| 2146 | |||||||||
| 2147 | /// Whether this type is an error type. | ||||||||
| 2148 | bool containsErrors() const { | ||||||||
| 2149 | return getDependence() & TypeDependence::Error; | ||||||||
| 2150 | } | ||||||||
| 2151 | |||||||||
| 2152 | /// Whether this type is a dependent type, meaning that its definition | ||||||||
| 2153 | /// somehow depends on a template parameter (C++ [temp.dep.type]). | ||||||||
| 2154 | bool isDependentType() const { | ||||||||
| 2155 | return getDependence() & TypeDependence::Dependent; | ||||||||
| 2156 | } | ||||||||
| 2157 | |||||||||
| 2158 | /// Determine whether this type is an instantiation-dependent type, | ||||||||
| 2159 | /// meaning that the type involves a template parameter (even if the | ||||||||
| 2160 | /// definition does not actually depend on the type substituted for that | ||||||||
| 2161 | /// template parameter). | ||||||||
| 2162 | bool isInstantiationDependentType() const { | ||||||||
| 2163 | return getDependence() & TypeDependence::Instantiation; | ||||||||
| 2164 | } | ||||||||
| 2165 | |||||||||
| 2166 | /// Determine whether this type is an undeduced type, meaning that | ||||||||
| 2167 | /// it somehow involves a C++11 'auto' type or similar which has not yet been | ||||||||
| 2168 | /// deduced. | ||||||||
| 2169 | bool isUndeducedType() const; | ||||||||
| 2170 | |||||||||
| 2171 | /// Whether this type is a variably-modified type (C99 6.7.5). | ||||||||
| 2172 | bool isVariablyModifiedType() const { | ||||||||
| 2173 | return getDependence() & TypeDependence::VariablyModified; | ||||||||
| 2174 | } | ||||||||
| 2175 | |||||||||
| 2176 | /// Whether this type involves a variable-length array type | ||||||||
| 2177 | /// with a definite size. | ||||||||
| 2178 | bool hasSizedVLAType() const; | ||||||||
| 2179 | |||||||||
| 2180 | /// Whether this type is or contains a local or unnamed type. | ||||||||
| 2181 | bool hasUnnamedOrLocalType() const; | ||||||||
| 2182 | |||||||||
| 2183 | bool isOverloadableType() const; | ||||||||
| 2184 | |||||||||
| 2185 | /// Determine wither this type is a C++ elaborated-type-specifier. | ||||||||
| 2186 | bool isElaboratedTypeSpecifier() const; | ||||||||
| 2187 | |||||||||
| 2188 | bool canDecayToPointerType() const; | ||||||||
| 2189 | |||||||||
| 2190 | /// Whether this type is represented natively as a pointer. This includes | ||||||||
| 2191 | /// pointers, references, block pointers, and Objective-C interface, | ||||||||
| 2192 | /// qualified id, and qualified interface types, as well as nullptr_t. | ||||||||
| 2193 | bool hasPointerRepresentation() const; | ||||||||
| 2194 | |||||||||
| 2195 | /// Whether this type can represent an objective pointer type for the | ||||||||
| 2196 | /// purpose of GC'ability | ||||||||
| 2197 | bool hasObjCPointerRepresentation() const; | ||||||||
| 2198 | |||||||||
| 2199 | /// Determine whether this type has an integer representation | ||||||||
| 2200 | /// of some sort, e.g., it is an integer type or a vector. | ||||||||
| 2201 | bool hasIntegerRepresentation() const; | ||||||||
| 2202 | |||||||||
| 2203 | /// Determine whether this type has an signed integer representation | ||||||||
| 2204 | /// of some sort, e.g., it is an signed integer type or a vector. | ||||||||
| 2205 | bool hasSignedIntegerRepresentation() const; | ||||||||
| 2206 | |||||||||
| 2207 | /// Determine whether this type has an unsigned integer representation | ||||||||
| 2208 | /// of some sort, e.g., it is an unsigned integer type or a vector. | ||||||||
| 2209 | bool hasUnsignedIntegerRepresentation() const; | ||||||||
| 2210 | |||||||||
| 2211 | /// Determine whether this type has a floating-point representation | ||||||||
| 2212 | /// of some sort, e.g., it is a floating-point type or a vector thereof. | ||||||||
| 2213 | bool hasFloatingRepresentation() const; | ||||||||
| 2214 | |||||||||
| 2215 | // Type Checking Functions: Check to see if this type is structurally the | ||||||||
| 2216 | // specified type, ignoring typedefs and qualifiers, and return a pointer to | ||||||||
| 2217 | // the best type we can. | ||||||||
| 2218 | const RecordType *getAsStructureType() const; | ||||||||
| 2219 | /// NOTE: getAs*ArrayType are methods on ASTContext. | ||||||||
| 2220 | const RecordType *getAsUnionType() const; | ||||||||
| 2221 | const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. | ||||||||
| 2222 | const ObjCObjectType *getAsObjCInterfaceType() const; | ||||||||
| 2223 | |||||||||
| 2224 | // The following is a convenience method that returns an ObjCObjectPointerType | ||||||||
| 2225 | // for object declared using an interface. | ||||||||
| 2226 | const ObjCObjectPointerType *getAsObjCInterfacePointerType() const; | ||||||||
| 2227 | const ObjCObjectPointerType *getAsObjCQualifiedIdType() const; | ||||||||
| 2228 | const ObjCObjectPointerType *getAsObjCQualifiedClassType() const; | ||||||||
| 2229 | const ObjCObjectType *getAsObjCQualifiedInterfaceType() const; | ||||||||
| 2230 | |||||||||
| 2231 | /// Retrieves the CXXRecordDecl that this type refers to, either | ||||||||
| 2232 | /// because the type is a RecordType or because it is the injected-class-name | ||||||||
| 2233 | /// type of a class template or class template partial specialization. | ||||||||
| 2234 | CXXRecordDecl *getAsCXXRecordDecl() const; | ||||||||
| 2235 | |||||||||
| 2236 | /// Retrieves the RecordDecl this type refers to. | ||||||||
| 2237 | RecordDecl *getAsRecordDecl() const; | ||||||||
| 2238 | |||||||||
| 2239 | /// Retrieves the TagDecl that this type refers to, either | ||||||||
| 2240 | /// because the type is a TagType or because it is the injected-class-name | ||||||||
| 2241 | /// type of a class template or class template partial specialization. | ||||||||
| 2242 | TagDecl *getAsTagDecl() const; | ||||||||
| 2243 | |||||||||
| 2244 | /// If this is a pointer or reference to a RecordType, return the | ||||||||
| 2245 | /// CXXRecordDecl that the type refers to. | ||||||||
| 2246 | /// | ||||||||
| 2247 | /// If this is not a pointer or reference, or the type being pointed to does | ||||||||
| 2248 | /// not refer to a CXXRecordDecl, returns NULL. | ||||||||
| 2249 | const CXXRecordDecl *getPointeeCXXRecordDecl() const; | ||||||||
| 2250 | |||||||||
| 2251 | /// Get the DeducedType whose type will be deduced for a variable with | ||||||||
| 2252 | /// an initializer of this type. This looks through declarators like pointer | ||||||||
| 2253 | /// types, but not through decltype or typedefs. | ||||||||
| 2254 | DeducedType *getContainedDeducedType() const; | ||||||||
| 2255 | |||||||||
| 2256 | /// Get the AutoType whose type will be deduced for a variable with | ||||||||
| 2257 | /// an initializer of this type. This looks through declarators like pointer | ||||||||
| 2258 | /// types, but not through decltype or typedefs. | ||||||||
| 2259 | AutoType *getContainedAutoType() const { | ||||||||
| 2260 | return dyn_cast_or_null<AutoType>(getContainedDeducedType()); | ||||||||
| 2261 | } | ||||||||
| 2262 | |||||||||
| 2263 | /// Determine whether this type was written with a leading 'auto' | ||||||||
| 2264 | /// corresponding to a trailing return type (possibly for a nested | ||||||||
| 2265 | /// function type within a pointer to function type or similar). | ||||||||
| 2266 | bool hasAutoForTrailingReturnType() const; | ||||||||
| 2267 | |||||||||
| 2268 | /// Member-template getAs<specific type>'. Look through sugar for | ||||||||
| 2269 | /// an instance of \<specific type>. This scheme will eventually | ||||||||
| 2270 | /// replace the specific getAsXXXX methods above. | ||||||||
| 2271 | /// | ||||||||
| 2272 | /// There are some specializations of this member template listed | ||||||||
| 2273 | /// immediately following this class. | ||||||||
| 2274 | template <typename T> const T *getAs() const; | ||||||||
| 2275 | |||||||||
| 2276 | /// Member-template getAsAdjusted<specific type>. Look through specific kinds | ||||||||
| 2277 | /// of sugar (parens, attributes, etc) for an instance of \<specific type>. | ||||||||
| 2278 | /// This is used when you need to walk over sugar nodes that represent some | ||||||||
| 2279 | /// kind of type adjustment from a type that was written as a \<specific type> | ||||||||
| 2280 | /// to another type that is still canonically a \<specific type>. | ||||||||
| 2281 | template <typename T> const T *getAsAdjusted() const; | ||||||||
| 2282 | |||||||||
| 2283 | /// A variant of getAs<> for array types which silently discards | ||||||||
| 2284 | /// qualifiers from the outermost type. | ||||||||
| 2285 | const ArrayType *getAsArrayTypeUnsafe() const; | ||||||||
| 2286 | |||||||||
| 2287 | /// Member-template castAs<specific type>. Look through sugar for | ||||||||
| 2288 | /// the underlying instance of \<specific type>. | ||||||||
| 2289 | /// | ||||||||
| 2290 | /// This method has the same relationship to getAs<T> as cast<T> has | ||||||||
| 2291 | /// to dyn_cast<T>; which is to say, the underlying type *must* | ||||||||
| 2292 | /// have the intended type, and this method will never return null. | ||||||||
| 2293 | template <typename T> const T *castAs() const; | ||||||||
| 2294 | |||||||||
| 2295 | /// A variant of castAs<> for array type which silently discards | ||||||||
| 2296 | /// qualifiers from the outermost type. | ||||||||
| 2297 | const ArrayType *castAsArrayTypeUnsafe() const; | ||||||||
| 2298 | |||||||||
| 2299 | /// Determine whether this type had the specified attribute applied to it | ||||||||
| 2300 | /// (looking through top-level type sugar). | ||||||||
| 2301 | bool hasAttr(attr::Kind AK) const; | ||||||||
| 2302 | |||||||||
| 2303 | /// Get the base element type of this type, potentially discarding type | ||||||||
| 2304 | /// qualifiers. This should never be used when type qualifiers | ||||||||
| 2305 | /// are meaningful. | ||||||||
| 2306 | const Type *getBaseElementTypeUnsafe() const; | ||||||||
| 2307 | |||||||||
| 2308 | /// If this is an array type, return the element type of the array, | ||||||||
| 2309 | /// potentially with type qualifiers missing. | ||||||||
| 2310 | /// This should never be used when type qualifiers are meaningful. | ||||||||
| 2311 | const Type *getArrayElementTypeNoTypeQual() const; | ||||||||
| 2312 | |||||||||
| 2313 | /// If this is a pointer type, return the pointee type. | ||||||||
| 2314 | /// If this is an array type, return the array element type. | ||||||||
| 2315 | /// This should never be used when type qualifiers are meaningful. | ||||||||
| 2316 | const Type *getPointeeOrArrayElementType() const; | ||||||||
| 2317 | |||||||||
| 2318 | /// If this is a pointer, ObjC object pointer, or block | ||||||||
| 2319 | /// pointer, this returns the respective pointee. | ||||||||
| 2320 | QualType getPointeeType() const; | ||||||||
| 2321 | |||||||||
| 2322 | /// Return the specified type with any "sugar" removed from the type, | ||||||||
| 2323 | /// removing any typedefs, typeofs, etc., as well as any qualifiers. | ||||||||
| 2324 | const Type *getUnqualifiedDesugaredType() const; | ||||||||
| 2325 | |||||||||
| 2326 | /// More type predicates useful for type checking/promotion | ||||||||
| 2327 | bool isPromotableIntegerType() const; // C99 6.3.1.1p2 | ||||||||
| 2328 | |||||||||
| 2329 | /// Return true if this is an integer type that is | ||||||||
| 2330 | /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], | ||||||||
| 2331 | /// or an enum decl which has a signed representation. | ||||||||
| 2332 | bool isSignedIntegerType() const; | ||||||||
| 2333 | |||||||||
| 2334 | /// Return true if this is an integer type that is | ||||||||
| 2335 | /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], | ||||||||
| 2336 | /// or an enum decl which has an unsigned representation. | ||||||||
| 2337 | bool isUnsignedIntegerType() const; | ||||||||
| 2338 | |||||||||
| 2339 | /// Determines whether this is an integer type that is signed or an | ||||||||
| 2340 | /// enumeration types whose underlying type is a signed integer type. | ||||||||
| 2341 | bool isSignedIntegerOrEnumerationType() const; | ||||||||
| 2342 | |||||||||
| 2343 | /// Determines whether this is an integer type that is unsigned or an | ||||||||
| 2344 | /// enumeration types whose underlying type is a unsigned integer type. | ||||||||
| 2345 | bool isUnsignedIntegerOrEnumerationType() const; | ||||||||
| 2346 | |||||||||
| 2347 | /// Return true if this is a fixed point type according to | ||||||||
| 2348 | /// ISO/IEC JTC1 SC22 WG14 N1169. | ||||||||
| 2349 | bool isFixedPointType() const; | ||||||||
| 2350 | |||||||||
| 2351 | /// Return true if this is a fixed point or integer type. | ||||||||
| 2352 | bool isFixedPointOrIntegerType() const; | ||||||||
| 2353 | |||||||||
| 2354 | /// Return true if this is a saturated fixed point type according to | ||||||||
| 2355 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. | ||||||||
| 2356 | bool isSaturatedFixedPointType() const; | ||||||||
| 2357 | |||||||||
| 2358 | /// Return true if this is a saturated fixed point type according to | ||||||||
| 2359 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. | ||||||||
| 2360 | bool isUnsaturatedFixedPointType() const; | ||||||||
| 2361 | |||||||||
| 2362 | /// Return true if this is a fixed point type that is signed according | ||||||||
| 2363 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. | ||||||||
| 2364 | bool isSignedFixedPointType() const; | ||||||||
| 2365 | |||||||||
| 2366 | /// Return true if this is a fixed point type that is unsigned according | ||||||||
| 2367 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. | ||||||||
| 2368 | bool isUnsignedFixedPointType() const; | ||||||||
| 2369 | |||||||||
| 2370 | /// Return true if this is not a variable sized type, | ||||||||
| 2371 | /// according to the rules of C99 6.7.5p3. It is not legal to call this on | ||||||||
| 2372 | /// incomplete types. | ||||||||
| 2373 | bool isConstantSizeType() const; | ||||||||
| 2374 | |||||||||
| 2375 | /// Returns true if this type can be represented by some | ||||||||
| 2376 | /// set of type specifiers. | ||||||||
| 2377 | bool isSpecifierType() const; | ||||||||
| 2378 | |||||||||
| 2379 | /// Determine the linkage of this type. | ||||||||
| 2380 | Linkage getLinkage() const; | ||||||||
| 2381 | |||||||||
| 2382 | /// Determine the visibility of this type. | ||||||||
| 2383 | Visibility getVisibility() const { | ||||||||
| 2384 | return getLinkageAndVisibility().getVisibility(); | ||||||||
| 2385 | } | ||||||||
| 2386 | |||||||||
| 2387 | /// Return true if the visibility was explicitly set is the code. | ||||||||
| 2388 | bool isVisibilityExplicit() const { | ||||||||
| 2389 | return getLinkageAndVisibility().isVisibilityExplicit(); | ||||||||
| 2390 | } | ||||||||
| 2391 | |||||||||
| 2392 | /// Determine the linkage and visibility of this type. | ||||||||
| 2393 | LinkageInfo getLinkageAndVisibility() const; | ||||||||
| 2394 | |||||||||
| 2395 | /// True if the computed linkage is valid. Used for consistency | ||||||||
| 2396 | /// checking. Should always return true. | ||||||||
| 2397 | bool isLinkageValid() const; | ||||||||
| 2398 | |||||||||
| 2399 | /// Determine the nullability of the given type. | ||||||||
| 2400 | /// | ||||||||
| 2401 | /// Note that nullability is only captured as sugar within the type | ||||||||
| 2402 | /// system, not as part of the canonical type, so nullability will | ||||||||
| 2403 | /// be lost by canonicalization and desugaring. | ||||||||
| 2404 | Optional<NullabilityKind> getNullability(const ASTContext &context) const; | ||||||||
| 2405 | |||||||||
| 2406 | /// Determine whether the given type can have a nullability | ||||||||
| 2407 | /// specifier applied to it, i.e., if it is any kind of pointer type. | ||||||||
| 2408 | /// | ||||||||
| 2409 | /// \param ResultIfUnknown The value to return if we don't yet know whether | ||||||||
| 2410 | /// this type can have nullability because it is dependent. | ||||||||
| 2411 | bool canHaveNullability(bool ResultIfUnknown = true) const; | ||||||||
| 2412 | |||||||||
| 2413 | /// Retrieve the set of substitutions required when accessing a member | ||||||||
| 2414 | /// of the Objective-C receiver type that is declared in the given context. | ||||||||
| 2415 | /// | ||||||||
| 2416 | /// \c *this is the type of the object we're operating on, e.g., the | ||||||||
| 2417 | /// receiver for a message send or the base of a property access, and is | ||||||||
| 2418 | /// expected to be of some object or object pointer type. | ||||||||
| 2419 | /// | ||||||||
| 2420 | /// \param dc The declaration context for which we are building up a | ||||||||
| 2421 | /// substitution mapping, which should be an Objective-C class, extension, | ||||||||
| 2422 | /// category, or method within. | ||||||||
| 2423 | /// | ||||||||
| 2424 | /// \returns an array of type arguments that can be substituted for | ||||||||
| 2425 | /// the type parameters of the given declaration context in any type described | ||||||||
| 2426 | /// within that context, or an empty optional to indicate that no | ||||||||
| 2427 | /// substitution is required. | ||||||||
| 2428 | Optional<ArrayRef<QualType>> | ||||||||
| 2429 | getObjCSubstitutions(const DeclContext *dc) const; | ||||||||
| 2430 | |||||||||
| 2431 | /// Determines if this is an ObjC interface type that may accept type | ||||||||
| 2432 | /// parameters. | ||||||||
| 2433 | bool acceptsObjCTypeParams() const; | ||||||||
| 2434 | |||||||||
| 2435 | const char *getTypeClassName() const; | ||||||||
| 2436 | |||||||||
| 2437 | QualType getCanonicalTypeInternal() const { | ||||||||
| 2438 | return CanonicalType; | ||||||||
| 2439 | } | ||||||||
| 2440 | |||||||||
| 2441 | CanQualType getCanonicalTypeUnqualified() const; // in CanonicalType.h | ||||||||
| 2442 | void dump() const; | ||||||||
| 2443 | void dump(llvm::raw_ostream &OS, const ASTContext &Context) const; | ||||||||
| 2444 | }; | ||||||||
| 2445 | |||||||||
| 2446 | /// This will check for a TypedefType by removing any existing sugar | ||||||||
| 2447 | /// until it reaches a TypedefType or a non-sugared type. | ||||||||
| 2448 | template <> const TypedefType *Type::getAs() const; | ||||||||
| 2449 | |||||||||
| 2450 | /// This will check for a TemplateSpecializationType by removing any | ||||||||
| 2451 | /// existing sugar until it reaches a TemplateSpecializationType or a | ||||||||
| 2452 | /// non-sugared type. | ||||||||
| 2453 | template <> const TemplateSpecializationType *Type::getAs() const; | ||||||||
| 2454 | |||||||||
| 2455 | /// This will check for an AttributedType by removing any existing sugar | ||||||||
| 2456 | /// until it reaches an AttributedType or a non-sugared type. | ||||||||
| 2457 | template <> const AttributedType *Type::getAs() const; | ||||||||
| 2458 | |||||||||
| 2459 | // We can do canonical leaf types faster, because we don't have to | ||||||||
| 2460 | // worry about preserving child type decoration. | ||||||||
| 2461 | #define TYPE(Class, Base) | ||||||||
| 2462 | #define LEAF_TYPE(Class) \ | ||||||||
| 2463 | template <> inline const Class##Type *Type::getAs() const { \ | ||||||||
| 2464 | return dyn_cast<Class##Type>(CanonicalType); \ | ||||||||
| 2465 | } \ | ||||||||
| 2466 | template <> inline const Class##Type *Type::castAs() const { \ | ||||||||
| 2467 | return cast<Class##Type>(CanonicalType); \ | ||||||||
| 2468 | } | ||||||||
| 2469 | #include "clang/AST/TypeNodes.inc" | ||||||||
| 2470 | |||||||||
| 2471 | /// This class is used for builtin types like 'int'. Builtin | ||||||||
| 2472 | /// types are always canonical and have a literal name field. | ||||||||
| 2473 | class BuiltinType : public Type { | ||||||||
| 2474 | public: | ||||||||
| 2475 | enum Kind { | ||||||||
| 2476 | // OpenCL image types | ||||||||
| 2477 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) Id, | ||||||||
| 2478 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
| 2479 | // OpenCL extension types | ||||||||
| 2480 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) Id, | ||||||||
| 2481 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 2482 | // SVE Types | ||||||||
| 2483 | #define SVE_TYPE(Name, Id, SingletonId) Id, | ||||||||
| 2484 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||
| 2485 | // All other builtin types | ||||||||
| 2486 | #define BUILTIN_TYPE(Id, SingletonId) Id, | ||||||||
| 2487 | #define LAST_BUILTIN_TYPE(Id) LastKind = Id | ||||||||
| 2488 | #include "clang/AST/BuiltinTypes.def" | ||||||||
| 2489 | }; | ||||||||
| 2490 | |||||||||
| 2491 | private: | ||||||||
| 2492 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2493 | |||||||||
| 2494 | BuiltinType(Kind K) | ||||||||
| 2495 | : Type(Builtin, QualType(), | ||||||||
| 2496 | K == Dependent ? TypeDependence::DependentInstantiation | ||||||||
| 2497 | : TypeDependence::None) { | ||||||||
| 2498 | BuiltinTypeBits.Kind = K; | ||||||||
| 2499 | } | ||||||||
| 2500 | |||||||||
| 2501 | public: | ||||||||
| 2502 | Kind getKind() const { return static_cast<Kind>(BuiltinTypeBits.Kind); } | ||||||||
| 2503 | StringRef getName(const PrintingPolicy &Policy) const; | ||||||||
| 2504 | |||||||||
| 2505 | const char *getNameAsCString(const PrintingPolicy &Policy) const { | ||||||||
| 2506 | // The StringRef is null-terminated. | ||||||||
| 2507 | StringRef str = getName(Policy); | ||||||||
| 2508 | assert(!str.empty() && str.data()[str.size()] == '\0')((!str.empty() && str.data()[str.size()] == '\0') ? static_cast <void> (0) : __assert_fail ("!str.empty() && str.data()[str.size()] == '\\0'" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 2508, __PRETTY_FUNCTION__)); | ||||||||
| 2509 | return str.data(); | ||||||||
| 2510 | } | ||||||||
| 2511 | |||||||||
| 2512 | bool isSugared() const { return false; } | ||||||||
| 2513 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2514 | |||||||||
| 2515 | bool isInteger() const { | ||||||||
| 2516 | return getKind() >= Bool && getKind() <= Int128; | ||||||||
| 2517 | } | ||||||||
| 2518 | |||||||||
| 2519 | bool isSignedInteger() const { | ||||||||
| 2520 | return getKind() >= Char_S && getKind() <= Int128; | ||||||||
| 2521 | } | ||||||||
| 2522 | |||||||||
| 2523 | bool isUnsignedInteger() const { | ||||||||
| 2524 | return getKind() >= Bool && getKind() <= UInt128; | ||||||||
| 2525 | } | ||||||||
| 2526 | |||||||||
| 2527 | bool isFloatingPoint() const { | ||||||||
| 2528 | return getKind() >= Half && getKind() <= Float128; | ||||||||
| 2529 | } | ||||||||
| 2530 | |||||||||
| 2531 | /// Determines whether the given kind corresponds to a placeholder type. | ||||||||
| 2532 | static bool isPlaceholderTypeKind(Kind K) { | ||||||||
| 2533 | return K >= Overload; | ||||||||
| 2534 | } | ||||||||
| 2535 | |||||||||
| 2536 | /// Determines whether this type is a placeholder type, i.e. a type | ||||||||
| 2537 | /// which cannot appear in arbitrary positions in a fully-formed | ||||||||
| 2538 | /// expression. | ||||||||
| 2539 | bool isPlaceholderType() const { | ||||||||
| 2540 | return isPlaceholderTypeKind(getKind()); | ||||||||
| 2541 | } | ||||||||
| 2542 | |||||||||
| 2543 | /// Determines whether this type is a placeholder type other than | ||||||||
| 2544 | /// Overload. Most placeholder types require only syntactic | ||||||||
| 2545 | /// information about their context in order to be resolved (e.g. | ||||||||
| 2546 | /// whether it is a call expression), which means they can (and | ||||||||
| 2547 | /// should) be resolved in an earlier "phase" of analysis. | ||||||||
| 2548 | /// Overload expressions sometimes pick up further information | ||||||||
| 2549 | /// from their context, like whether the context expects a | ||||||||
| 2550 | /// specific function-pointer type, and so frequently need | ||||||||
| 2551 | /// special treatment. | ||||||||
| 2552 | bool isNonOverloadPlaceholderType() const { | ||||||||
| 2553 | return getKind() > Overload; | ||||||||
| 2554 | } | ||||||||
| 2555 | |||||||||
| 2556 | static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } | ||||||||
| 2557 | }; | ||||||||
| 2558 | |||||||||
| 2559 | /// Complex values, per C99 6.2.5p11. This supports the C99 complex | ||||||||
| 2560 | /// types (_Complex float etc) as well as the GCC integer complex extensions. | ||||||||
| 2561 | class ComplexType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2562 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2563 | |||||||||
| 2564 | QualType ElementType; | ||||||||
| 2565 | |||||||||
| 2566 | ComplexType(QualType Element, QualType CanonicalPtr) | ||||||||
| 2567 | : Type(Complex, CanonicalPtr, Element->getDependence()), | ||||||||
| 2568 | ElementType(Element) {} | ||||||||
| 2569 | |||||||||
| 2570 | public: | ||||||||
| 2571 | QualType getElementType() const { return ElementType; } | ||||||||
| 2572 | |||||||||
| 2573 | bool isSugared() const { return false; } | ||||||||
| 2574 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2575 | |||||||||
| 2576 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2577 | Profile(ID, getElementType()); | ||||||||
| 2578 | } | ||||||||
| 2579 | |||||||||
| 2580 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { | ||||||||
| 2581 | ID.AddPointer(Element.getAsOpaquePtr()); | ||||||||
| 2582 | } | ||||||||
| 2583 | |||||||||
| 2584 | static bool classof(const Type *T) { return T->getTypeClass() == Complex; } | ||||||||
| 2585 | }; | ||||||||
| 2586 | |||||||||
| 2587 | /// Sugar for parentheses used when specifying types. | ||||||||
| 2588 | class ParenType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2589 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2590 | |||||||||
| 2591 | QualType Inner; | ||||||||
| 2592 | |||||||||
| 2593 | ParenType(QualType InnerType, QualType CanonType) | ||||||||
| 2594 | : Type(Paren, CanonType, InnerType->getDependence()), Inner(InnerType) {} | ||||||||
| 2595 | |||||||||
| 2596 | public: | ||||||||
| 2597 | QualType getInnerType() const { return Inner; } | ||||||||
| 2598 | |||||||||
| 2599 | bool isSugared() const { return true; } | ||||||||
| 2600 | QualType desugar() const { return getInnerType(); } | ||||||||
| 2601 | |||||||||
| 2602 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2603 | Profile(ID, getInnerType()); | ||||||||
| 2604 | } | ||||||||
| 2605 | |||||||||
| 2606 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Inner) { | ||||||||
| 2607 | Inner.Profile(ID); | ||||||||
| 2608 | } | ||||||||
| 2609 | |||||||||
| 2610 | static bool classof(const Type *T) { return T->getTypeClass() == Paren; } | ||||||||
| 2611 | }; | ||||||||
| 2612 | |||||||||
| 2613 | /// PointerType - C99 6.7.5.1 - Pointer Declarators. | ||||||||
| 2614 | class PointerType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2615 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2616 | |||||||||
| 2617 | QualType PointeeType; | ||||||||
| 2618 | |||||||||
| 2619 | PointerType(QualType Pointee, QualType CanonicalPtr) | ||||||||
| 2620 | : Type(Pointer, CanonicalPtr, Pointee->getDependence()), | ||||||||
| 2621 | PointeeType(Pointee) {} | ||||||||
| 2622 | |||||||||
| 2623 | public: | ||||||||
| 2624 | QualType getPointeeType() const { return PointeeType; } | ||||||||
| 2625 | |||||||||
| 2626 | bool isSugared() const { return false; } | ||||||||
| 2627 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2628 | |||||||||
| 2629 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2630 | Profile(ID, getPointeeType()); | ||||||||
| 2631 | } | ||||||||
| 2632 | |||||||||
| 2633 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { | ||||||||
| 2634 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||
| 2635 | } | ||||||||
| 2636 | |||||||||
| 2637 | static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } | ||||||||
| 2638 | }; | ||||||||
| 2639 | |||||||||
| 2640 | /// Represents a type which was implicitly adjusted by the semantic | ||||||||
| 2641 | /// engine for arbitrary reasons. For example, array and function types can | ||||||||
| 2642 | /// decay, and function types can have their calling conventions adjusted. | ||||||||
| 2643 | class AdjustedType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2644 | QualType OriginalTy; | ||||||||
| 2645 | QualType AdjustedTy; | ||||||||
| 2646 | |||||||||
| 2647 | protected: | ||||||||
| 2648 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2649 | |||||||||
| 2650 | AdjustedType(TypeClass TC, QualType OriginalTy, QualType AdjustedTy, | ||||||||
| 2651 | QualType CanonicalPtr) | ||||||||
| 2652 | : Type(TC, CanonicalPtr, OriginalTy->getDependence()), | ||||||||
| 2653 | OriginalTy(OriginalTy), AdjustedTy(AdjustedTy) {} | ||||||||
| 2654 | |||||||||
| 2655 | public: | ||||||||
| 2656 | QualType getOriginalType() const { return OriginalTy; } | ||||||||
| 2657 | QualType getAdjustedType() const { return AdjustedTy; } | ||||||||
| 2658 | |||||||||
| 2659 | bool isSugared() const { return true; } | ||||||||
| 2660 | QualType desugar() const { return AdjustedTy; } | ||||||||
| 2661 | |||||||||
| 2662 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2663 | Profile(ID, OriginalTy, AdjustedTy); | ||||||||
| 2664 | } | ||||||||
| 2665 | |||||||||
| 2666 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Orig, QualType New) { | ||||||||
| 2667 | ID.AddPointer(Orig.getAsOpaquePtr()); | ||||||||
| 2668 | ID.AddPointer(New.getAsOpaquePtr()); | ||||||||
| 2669 | } | ||||||||
| 2670 | |||||||||
| 2671 | static bool classof(const Type *T) { | ||||||||
| 2672 | return T->getTypeClass() == Adjusted || T->getTypeClass() == Decayed; | ||||||||
| 2673 | } | ||||||||
| 2674 | }; | ||||||||
| 2675 | |||||||||
| 2676 | /// Represents a pointer type decayed from an array or function type. | ||||||||
| 2677 | class DecayedType : public AdjustedType { | ||||||||
| 2678 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2679 | |||||||||
| 2680 | inline | ||||||||
| 2681 | DecayedType(QualType OriginalType, QualType Decayed, QualType Canonical); | ||||||||
| 2682 | |||||||||
| 2683 | public: | ||||||||
| 2684 | QualType getDecayedType() const { return getAdjustedType(); } | ||||||||
| 2685 | |||||||||
| 2686 | inline QualType getPointeeType() const; | ||||||||
| 2687 | |||||||||
| 2688 | static bool classof(const Type *T) { return T->getTypeClass() == Decayed; } | ||||||||
| 2689 | }; | ||||||||
| 2690 | |||||||||
| 2691 | /// Pointer to a block type. | ||||||||
| 2692 | /// This type is to represent types syntactically represented as | ||||||||
| 2693 | /// "void (^)(int)", etc. Pointee is required to always be a function type. | ||||||||
| 2694 | class BlockPointerType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2695 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2696 | |||||||||
| 2697 | // Block is some kind of pointer type | ||||||||
| 2698 | QualType PointeeType; | ||||||||
| 2699 | |||||||||
| 2700 | BlockPointerType(QualType Pointee, QualType CanonicalCls) | ||||||||
| 2701 | : Type(BlockPointer, CanonicalCls, Pointee->getDependence()), | ||||||||
| 2702 | PointeeType(Pointee) {} | ||||||||
| 2703 | |||||||||
| 2704 | public: | ||||||||
| 2705 | // Get the pointee type. Pointee is required to always be a function type. | ||||||||
| 2706 | QualType getPointeeType() const { return PointeeType; } | ||||||||
| 2707 | |||||||||
| 2708 | bool isSugared() const { return false; } | ||||||||
| 2709 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2710 | |||||||||
| 2711 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2712 | Profile(ID, getPointeeType()); | ||||||||
| 2713 | } | ||||||||
| 2714 | |||||||||
| 2715 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { | ||||||||
| 2716 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||
| 2717 | } | ||||||||
| 2718 | |||||||||
| 2719 | static bool classof(const Type *T) { | ||||||||
| 2720 | return T->getTypeClass() == BlockPointer; | ||||||||
| 2721 | } | ||||||||
| 2722 | }; | ||||||||
| 2723 | |||||||||
| 2724 | /// Base for LValueReferenceType and RValueReferenceType | ||||||||
| 2725 | class ReferenceType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2726 | QualType PointeeType; | ||||||||
| 2727 | |||||||||
| 2728 | protected: | ||||||||
| 2729 | ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef, | ||||||||
| 2730 | bool SpelledAsLValue) | ||||||||
| 2731 | : Type(tc, CanonicalRef, Referencee->getDependence()), | ||||||||
| 2732 | PointeeType(Referencee) { | ||||||||
| 2733 | ReferenceTypeBits.SpelledAsLValue = SpelledAsLValue; | ||||||||
| 2734 | ReferenceTypeBits.InnerRef = Referencee->isReferenceType(); | ||||||||
| 2735 | } | ||||||||
| 2736 | |||||||||
| 2737 | public: | ||||||||
| 2738 | bool isSpelledAsLValue() const { return ReferenceTypeBits.SpelledAsLValue; } | ||||||||
| 2739 | bool isInnerRef() const { return ReferenceTypeBits.InnerRef; } | ||||||||
| 2740 | |||||||||
| 2741 | QualType getPointeeTypeAsWritten() const { return PointeeType; } | ||||||||
| 2742 | |||||||||
| 2743 | QualType getPointeeType() const { | ||||||||
| 2744 | // FIXME: this might strip inner qualifiers; okay? | ||||||||
| 2745 | const ReferenceType *T = this; | ||||||||
| 2746 | while (T->isInnerRef()) | ||||||||
| 2747 | T = T->PointeeType->castAs<ReferenceType>(); | ||||||||
| 2748 | return T->PointeeType; | ||||||||
| 2749 | } | ||||||||
| 2750 | |||||||||
| 2751 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2752 | Profile(ID, PointeeType, isSpelledAsLValue()); | ||||||||
| 2753 | } | ||||||||
| 2754 | |||||||||
| 2755 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 2756 | QualType Referencee, | ||||||||
| 2757 | bool SpelledAsLValue) { | ||||||||
| 2758 | ID.AddPointer(Referencee.getAsOpaquePtr()); | ||||||||
| 2759 | ID.AddBoolean(SpelledAsLValue); | ||||||||
| 2760 | } | ||||||||
| 2761 | |||||||||
| 2762 | static bool classof(const Type *T) { | ||||||||
| 2763 | return T->getTypeClass() == LValueReference || | ||||||||
| 2764 | T->getTypeClass() == RValueReference; | ||||||||
| 2765 | } | ||||||||
| 2766 | }; | ||||||||
| 2767 | |||||||||
| 2768 | /// An lvalue reference type, per C++11 [dcl.ref]. | ||||||||
| 2769 | class LValueReferenceType : public ReferenceType { | ||||||||
| 2770 | friend class ASTContext; // ASTContext creates these | ||||||||
| 2771 | |||||||||
| 2772 | LValueReferenceType(QualType Referencee, QualType CanonicalRef, | ||||||||
| 2773 | bool SpelledAsLValue) | ||||||||
| 2774 | : ReferenceType(LValueReference, Referencee, CanonicalRef, | ||||||||
| 2775 | SpelledAsLValue) {} | ||||||||
| 2776 | |||||||||
| 2777 | public: | ||||||||
| 2778 | bool isSugared() const { return false; } | ||||||||
| 2779 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2780 | |||||||||
| 2781 | static bool classof(const Type *T) { | ||||||||
| 2782 | return T->getTypeClass() == LValueReference; | ||||||||
| 2783 | } | ||||||||
| 2784 | }; | ||||||||
| 2785 | |||||||||
| 2786 | /// An rvalue reference type, per C++11 [dcl.ref]. | ||||||||
| 2787 | class RValueReferenceType : public ReferenceType { | ||||||||
| 2788 | friend class ASTContext; // ASTContext creates these | ||||||||
| 2789 | |||||||||
| 2790 | RValueReferenceType(QualType Referencee, QualType CanonicalRef) | ||||||||
| 2791 | : ReferenceType(RValueReference, Referencee, CanonicalRef, false) {} | ||||||||
| 2792 | |||||||||
| 2793 | public: | ||||||||
| 2794 | bool isSugared() const { return false; } | ||||||||
| 2795 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2796 | |||||||||
| 2797 | static bool classof(const Type *T) { | ||||||||
| 2798 | return T->getTypeClass() == RValueReference; | ||||||||
| 2799 | } | ||||||||
| 2800 | }; | ||||||||
| 2801 | |||||||||
| 2802 | /// A pointer to member type per C++ 8.3.3 - Pointers to members. | ||||||||
| 2803 | /// | ||||||||
| 2804 | /// This includes both pointers to data members and pointer to member functions. | ||||||||
| 2805 | class MemberPointerType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2806 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2807 | |||||||||
| 2808 | QualType PointeeType; | ||||||||
| 2809 | |||||||||
| 2810 | /// The class of which the pointee is a member. Must ultimately be a | ||||||||
| 2811 | /// RecordType, but could be a typedef or a template parameter too. | ||||||||
| 2812 | const Type *Class; | ||||||||
| 2813 | |||||||||
| 2814 | MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) | ||||||||
| 2815 | : Type(MemberPointer, CanonicalPtr, | ||||||||
| 2816 | (Cls->getDependence() & ~TypeDependence::VariablyModified) | | ||||||||
| 2817 | Pointee->getDependence()), | ||||||||
| 2818 | PointeeType(Pointee), Class(Cls) {} | ||||||||
| 2819 | |||||||||
| 2820 | public: | ||||||||
| 2821 | QualType getPointeeType() const { return PointeeType; } | ||||||||
| 2822 | |||||||||
| 2823 | /// Returns true if the member type (i.e. the pointee type) is a | ||||||||
| 2824 | /// function type rather than a data-member type. | ||||||||
| 2825 | bool isMemberFunctionPointer() const { | ||||||||
| 2826 | return PointeeType->isFunctionProtoType(); | ||||||||
| 2827 | } | ||||||||
| 2828 | |||||||||
| 2829 | /// Returns true if the member type (i.e. the pointee type) is a | ||||||||
| 2830 | /// data type rather than a function type. | ||||||||
| 2831 | bool isMemberDataPointer() const { | ||||||||
| 2832 | return !PointeeType->isFunctionProtoType(); | ||||||||
| 2833 | } | ||||||||
| 2834 | |||||||||
| 2835 | const Type *getClass() const { return Class; } | ||||||||
| 2836 | CXXRecordDecl *getMostRecentCXXRecordDecl() const; | ||||||||
| 2837 | |||||||||
| 2838 | bool isSugared() const { return false; } | ||||||||
| 2839 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2840 | |||||||||
| 2841 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2842 | Profile(ID, getPointeeType(), getClass()); | ||||||||
| 2843 | } | ||||||||
| 2844 | |||||||||
| 2845 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, | ||||||||
| 2846 | const Type *Class) { | ||||||||
| 2847 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||
| 2848 | ID.AddPointer(Class); | ||||||||
| 2849 | } | ||||||||
| 2850 | |||||||||
| 2851 | static bool classof(const Type *T) { | ||||||||
| 2852 | return T->getTypeClass() == MemberPointer; | ||||||||
| 2853 | } | ||||||||
| 2854 | }; | ||||||||
| 2855 | |||||||||
| 2856 | /// Represents an array type, per C99 6.7.5.2 - Array Declarators. | ||||||||
| 2857 | class ArrayType : public Type, public llvm::FoldingSetNode { | ||||||||
| 2858 | public: | ||||||||
| 2859 | /// Capture whether this is a normal array (e.g. int X[4]) | ||||||||
| 2860 | /// an array with a static size (e.g. int X[static 4]), or an array | ||||||||
| 2861 | /// with a star size (e.g. int X[*]). | ||||||||
| 2862 | /// 'static' is only allowed on function parameters. | ||||||||
| 2863 | enum ArraySizeModifier { | ||||||||
| 2864 | Normal, Static, Star | ||||||||
| 2865 | }; | ||||||||
| 2866 | |||||||||
| 2867 | private: | ||||||||
| 2868 | /// The element type of the array. | ||||||||
| 2869 | QualType ElementType; | ||||||||
| 2870 | |||||||||
| 2871 | protected: | ||||||||
| 2872 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2873 | |||||||||
| 2874 | ArrayType(TypeClass tc, QualType et, QualType can, ArraySizeModifier sm, | ||||||||
| 2875 | unsigned tq, const Expr *sz = nullptr); | ||||||||
| 2876 | |||||||||
| 2877 | public: | ||||||||
| 2878 | QualType getElementType() const { return ElementType; } | ||||||||
| 2879 | |||||||||
| 2880 | ArraySizeModifier getSizeModifier() const { | ||||||||
| 2881 | return ArraySizeModifier(ArrayTypeBits.SizeModifier); | ||||||||
| 2882 | } | ||||||||
| 2883 | |||||||||
| 2884 | Qualifiers getIndexTypeQualifiers() const { | ||||||||
| 2885 | return Qualifiers::fromCVRMask(getIndexTypeCVRQualifiers()); | ||||||||
| 2886 | } | ||||||||
| 2887 | |||||||||
| 2888 | unsigned getIndexTypeCVRQualifiers() const { | ||||||||
| 2889 | return ArrayTypeBits.IndexTypeQuals; | ||||||||
| 2890 | } | ||||||||
| 2891 | |||||||||
| 2892 | static bool classof(const Type *T) { | ||||||||
| 2893 | return T->getTypeClass() == ConstantArray || | ||||||||
| 2894 | T->getTypeClass() == VariableArray || | ||||||||
| 2895 | T->getTypeClass() == IncompleteArray || | ||||||||
| 2896 | T->getTypeClass() == DependentSizedArray; | ||||||||
| 2897 | } | ||||||||
| 2898 | }; | ||||||||
| 2899 | |||||||||
| 2900 | /// Represents the canonical version of C arrays with a specified constant size. | ||||||||
| 2901 | /// For example, the canonical type for 'int A[4 + 4*100]' is a | ||||||||
| 2902 | /// ConstantArrayType where the element type is 'int' and the size is 404. | ||||||||
| 2903 | class ConstantArrayType final | ||||||||
| 2904 | : public ArrayType, | ||||||||
| 2905 | private llvm::TrailingObjects<ConstantArrayType, const Expr *> { | ||||||||
| 2906 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2907 | friend TrailingObjects; | ||||||||
| 2908 | |||||||||
| 2909 | llvm::APInt Size; // Allows us to unique the type. | ||||||||
| 2910 | |||||||||
| 2911 | ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, | ||||||||
| 2912 | const Expr *sz, ArraySizeModifier sm, unsigned tq) | ||||||||
| 2913 | : ArrayType(ConstantArray, et, can, sm, tq, sz), Size(size) { | ||||||||
| 2914 | ConstantArrayTypeBits.HasStoredSizeExpr = sz != nullptr; | ||||||||
| 2915 | if (ConstantArrayTypeBits.HasStoredSizeExpr) { | ||||||||
| 2916 | assert(!can.isNull() && "canonical constant array should not have size")((!can.isNull() && "canonical constant array should not have size" ) ? static_cast<void> (0) : __assert_fail ("!can.isNull() && \"canonical constant array should not have size\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 2916, __PRETTY_FUNCTION__)); | ||||||||
| 2917 | *getTrailingObjects<const Expr*>() = sz; | ||||||||
| 2918 | } | ||||||||
| 2919 | } | ||||||||
| 2920 | |||||||||
| 2921 | unsigned numTrailingObjects(OverloadToken<const Expr*>) const { | ||||||||
| 2922 | return ConstantArrayTypeBits.HasStoredSizeExpr; | ||||||||
| 2923 | } | ||||||||
| 2924 | |||||||||
| 2925 | public: | ||||||||
| 2926 | const llvm::APInt &getSize() const { return Size; } | ||||||||
| 2927 | const Expr *getSizeExpr() const { | ||||||||
| 2928 | return ConstantArrayTypeBits.HasStoredSizeExpr | ||||||||
| 2929 | ? *getTrailingObjects<const Expr *>() | ||||||||
| 2930 | : nullptr; | ||||||||
| 2931 | } | ||||||||
| 2932 | bool isSugared() const { return false; } | ||||||||
| 2933 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2934 | |||||||||
| 2935 | /// Determine the number of bits required to address a member of | ||||||||
| 2936 | // an array with the given element type and number of elements. | ||||||||
| 2937 | static unsigned getNumAddressingBits(const ASTContext &Context, | ||||||||
| 2938 | QualType ElementType, | ||||||||
| 2939 | const llvm::APInt &NumElements); | ||||||||
| 2940 | |||||||||
| 2941 | /// Determine the maximum number of active bits that an array's size | ||||||||
| 2942 | /// can require, which limits the maximum size of the array. | ||||||||
| 2943 | static unsigned getMaxSizeBits(const ASTContext &Context); | ||||||||
| 2944 | |||||||||
| 2945 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { | ||||||||
| 2946 | Profile(ID, Ctx, getElementType(), getSize(), getSizeExpr(), | ||||||||
| 2947 | getSizeModifier(), getIndexTypeCVRQualifiers()); | ||||||||
| 2948 | } | ||||||||
| 2949 | |||||||||
| 2950 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx, | ||||||||
| 2951 | QualType ET, const llvm::APInt &ArraySize, | ||||||||
| 2952 | const Expr *SizeExpr, ArraySizeModifier SizeMod, | ||||||||
| 2953 | unsigned TypeQuals); | ||||||||
| 2954 | |||||||||
| 2955 | static bool classof(const Type *T) { | ||||||||
| 2956 | return T->getTypeClass() == ConstantArray; | ||||||||
| 2957 | } | ||||||||
| 2958 | }; | ||||||||
| 2959 | |||||||||
| 2960 | /// Represents a C array with an unspecified size. For example 'int A[]' has | ||||||||
| 2961 | /// an IncompleteArrayType where the element type is 'int' and the size is | ||||||||
| 2962 | /// unspecified. | ||||||||
| 2963 | class IncompleteArrayType : public ArrayType { | ||||||||
| 2964 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 2965 | |||||||||
| 2966 | IncompleteArrayType(QualType et, QualType can, | ||||||||
| 2967 | ArraySizeModifier sm, unsigned tq) | ||||||||
| 2968 | : ArrayType(IncompleteArray, et, can, sm, tq) {} | ||||||||
| 2969 | |||||||||
| 2970 | public: | ||||||||
| 2971 | friend class StmtIteratorBase; | ||||||||
| 2972 | |||||||||
| 2973 | bool isSugared() const { return false; } | ||||||||
| 2974 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 2975 | |||||||||
| 2976 | static bool classof(const Type *T) { | ||||||||
| 2977 | return T->getTypeClass() == IncompleteArray; | ||||||||
| 2978 | } | ||||||||
| 2979 | |||||||||
| 2980 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 2981 | Profile(ID, getElementType(), getSizeModifier(), | ||||||||
| 2982 | getIndexTypeCVRQualifiers()); | ||||||||
| 2983 | } | ||||||||
| 2984 | |||||||||
| 2985 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, | ||||||||
| 2986 | ArraySizeModifier SizeMod, unsigned TypeQuals) { | ||||||||
| 2987 | ID.AddPointer(ET.getAsOpaquePtr()); | ||||||||
| 2988 | ID.AddInteger(SizeMod); | ||||||||
| 2989 | ID.AddInteger(TypeQuals); | ||||||||
| 2990 | } | ||||||||
| 2991 | }; | ||||||||
| 2992 | |||||||||
| 2993 | /// Represents a C array with a specified size that is not an | ||||||||
| 2994 | /// integer-constant-expression. For example, 'int s[x+foo()]'. | ||||||||
| 2995 | /// Since the size expression is an arbitrary expression, we store it as such. | ||||||||
| 2996 | /// | ||||||||
| 2997 | /// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and | ||||||||
| 2998 | /// should not be: two lexically equivalent variable array types could mean | ||||||||
| 2999 | /// different things, for example, these variables do not have the same type | ||||||||
| 3000 | /// dynamically: | ||||||||
| 3001 | /// | ||||||||
| 3002 | /// void foo(int x) { | ||||||||
| 3003 | /// int Y[x]; | ||||||||
| 3004 | /// ++x; | ||||||||
| 3005 | /// int Z[x]; | ||||||||
| 3006 | /// } | ||||||||
| 3007 | class VariableArrayType : public ArrayType { | ||||||||
| 3008 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 3009 | |||||||||
| 3010 | /// An assignment-expression. VLA's are only permitted within | ||||||||
| 3011 | /// a function block. | ||||||||
| 3012 | Stmt *SizeExpr; | ||||||||
| 3013 | |||||||||
| 3014 | /// The range spanned by the left and right array brackets. | ||||||||
| 3015 | SourceRange Brackets; | ||||||||
| 3016 | |||||||||
| 3017 | VariableArrayType(QualType et, QualType can, Expr *e, | ||||||||
| 3018 | ArraySizeModifier sm, unsigned tq, | ||||||||
| 3019 | SourceRange brackets) | ||||||||
| 3020 | : ArrayType(VariableArray, et, can, sm, tq, e), | ||||||||
| 3021 | SizeExpr((Stmt*) e), Brackets(brackets) {} | ||||||||
| 3022 | |||||||||
| 3023 | public: | ||||||||
| 3024 | friend class StmtIteratorBase; | ||||||||
| 3025 | |||||||||
| 3026 | Expr *getSizeExpr() const { | ||||||||
| 3027 | // We use C-style casts instead of cast<> here because we do not wish | ||||||||
| 3028 | // to have a dependency of Type.h on Stmt.h/Expr.h. | ||||||||
| 3029 | return (Expr*) SizeExpr; | ||||||||
| 3030 | } | ||||||||
| 3031 | |||||||||
| 3032 | SourceRange getBracketsRange() const { return Brackets; } | ||||||||
| 3033 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } | ||||||||
| 3034 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } | ||||||||
| 3035 | |||||||||
| 3036 | bool isSugared() const { return false; } | ||||||||
| 3037 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3038 | |||||||||
| 3039 | static bool classof(const Type *T) { | ||||||||
| 3040 | return T->getTypeClass() == VariableArray; | ||||||||
| 3041 | } | ||||||||
| 3042 | |||||||||
| 3043 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3044 | llvm_unreachable("Cannot unique VariableArrayTypes.")::llvm::llvm_unreachable_internal("Cannot unique VariableArrayTypes." , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 3044); | ||||||||
| 3045 | } | ||||||||
| 3046 | }; | ||||||||
| 3047 | |||||||||
| 3048 | /// Represents an array type in C++ whose size is a value-dependent expression. | ||||||||
| 3049 | /// | ||||||||
| 3050 | /// For example: | ||||||||
| 3051 | /// \code | ||||||||
| 3052 | /// template<typename T, int Size> | ||||||||
| 3053 | /// class array { | ||||||||
| 3054 | /// T data[Size]; | ||||||||
| 3055 | /// }; | ||||||||
| 3056 | /// \endcode | ||||||||
| 3057 | /// | ||||||||
| 3058 | /// For these types, we won't actually know what the array bound is | ||||||||
| 3059 | /// until template instantiation occurs, at which point this will | ||||||||
| 3060 | /// become either a ConstantArrayType or a VariableArrayType. | ||||||||
| 3061 | class DependentSizedArrayType : public ArrayType { | ||||||||
| 3062 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 3063 | |||||||||
| 3064 | const ASTContext &Context; | ||||||||
| 3065 | |||||||||
| 3066 | /// An assignment expression that will instantiate to the | ||||||||
| 3067 | /// size of the array. | ||||||||
| 3068 | /// | ||||||||
| 3069 | /// The expression itself might be null, in which case the array | ||||||||
| 3070 | /// type will have its size deduced from an initializer. | ||||||||
| 3071 | Stmt *SizeExpr; | ||||||||
| 3072 | |||||||||
| 3073 | /// The range spanned by the left and right array brackets. | ||||||||
| 3074 | SourceRange Brackets; | ||||||||
| 3075 | |||||||||
| 3076 | DependentSizedArrayType(const ASTContext &Context, QualType et, QualType can, | ||||||||
| 3077 | Expr *e, ArraySizeModifier sm, unsigned tq, | ||||||||
| 3078 | SourceRange brackets); | ||||||||
| 3079 | |||||||||
| 3080 | public: | ||||||||
| 3081 | friend class StmtIteratorBase; | ||||||||
| 3082 | |||||||||
| 3083 | Expr *getSizeExpr() const { | ||||||||
| 3084 | // We use C-style casts instead of cast<> here because we do not wish | ||||||||
| 3085 | // to have a dependency of Type.h on Stmt.h/Expr.h. | ||||||||
| 3086 | return (Expr*) SizeExpr; | ||||||||
| 3087 | } | ||||||||
| 3088 | |||||||||
| 3089 | SourceRange getBracketsRange() const { return Brackets; } | ||||||||
| 3090 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } | ||||||||
| 3091 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } | ||||||||
| 3092 | |||||||||
| 3093 | bool isSugared() const { return false; } | ||||||||
| 3094 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3095 | |||||||||
| 3096 | static bool classof(const Type *T) { | ||||||||
| 3097 | return T->getTypeClass() == DependentSizedArray; | ||||||||
| 3098 | } | ||||||||
| 3099 | |||||||||
| 3100 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3101 | Profile(ID, Context, getElementType(), | ||||||||
| 3102 | getSizeModifier(), getIndexTypeCVRQualifiers(), getSizeExpr()); | ||||||||
| 3103 | } | ||||||||
| 3104 | |||||||||
| 3105 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 3106 | QualType ET, ArraySizeModifier SizeMod, | ||||||||
| 3107 | unsigned TypeQuals, Expr *E); | ||||||||
| 3108 | }; | ||||||||
| 3109 | |||||||||
| 3110 | /// Represents an extended address space qualifier where the input address space | ||||||||
| 3111 | /// value is dependent. Non-dependent address spaces are not represented with a | ||||||||
| 3112 | /// special Type subclass; they are stored on an ExtQuals node as part of a QualType. | ||||||||
| 3113 | /// | ||||||||
| 3114 | /// For example: | ||||||||
| 3115 | /// \code | ||||||||
| 3116 | /// template<typename T, int AddrSpace> | ||||||||
| 3117 | /// class AddressSpace { | ||||||||
| 3118 | /// typedef T __attribute__((address_space(AddrSpace))) type; | ||||||||
| 3119 | /// } | ||||||||
| 3120 | /// \endcode | ||||||||
| 3121 | class DependentAddressSpaceType : public Type, public llvm::FoldingSetNode { | ||||||||
| 3122 | friend class ASTContext; | ||||||||
| 3123 | |||||||||
| 3124 | const ASTContext &Context; | ||||||||
| 3125 | Expr *AddrSpaceExpr; | ||||||||
| 3126 | QualType PointeeType; | ||||||||
| 3127 | SourceLocation loc; | ||||||||
| 3128 | |||||||||
| 3129 | DependentAddressSpaceType(const ASTContext &Context, QualType PointeeType, | ||||||||
| 3130 | QualType can, Expr *AddrSpaceExpr, | ||||||||
| 3131 | SourceLocation loc); | ||||||||
| 3132 | |||||||||
| 3133 | public: | ||||||||
| 3134 | Expr *getAddrSpaceExpr() const { return AddrSpaceExpr; } | ||||||||
| 3135 | QualType getPointeeType() const { return PointeeType; } | ||||||||
| 3136 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||
| 3137 | |||||||||
| 3138 | bool isSugared() const { return false; } | ||||||||
| 3139 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3140 | |||||||||
| 3141 | static bool classof(const Type *T) { | ||||||||
| 3142 | return T->getTypeClass() == DependentAddressSpace; | ||||||||
| 3143 | } | ||||||||
| 3144 | |||||||||
| 3145 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3146 | Profile(ID, Context, getPointeeType(), getAddrSpaceExpr()); | ||||||||
| 3147 | } | ||||||||
| 3148 | |||||||||
| 3149 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 3150 | QualType PointeeType, Expr *AddrSpaceExpr); | ||||||||
| 3151 | }; | ||||||||
| 3152 | |||||||||
| 3153 | /// Represents an extended vector type where either the type or size is | ||||||||
| 3154 | /// dependent. | ||||||||
| 3155 | /// | ||||||||
| 3156 | /// For example: | ||||||||
| 3157 | /// \code | ||||||||
| 3158 | /// template<typename T, int Size> | ||||||||
| 3159 | /// class vector { | ||||||||
| 3160 | /// typedef T __attribute__((ext_vector_type(Size))) type; | ||||||||
| 3161 | /// } | ||||||||
| 3162 | /// \endcode | ||||||||
| 3163 | class DependentSizedExtVectorType : public Type, public llvm::FoldingSetNode { | ||||||||
| 3164 | friend class ASTContext; | ||||||||
| 3165 | |||||||||
| 3166 | const ASTContext &Context; | ||||||||
| 3167 | Expr *SizeExpr; | ||||||||
| 3168 | |||||||||
| 3169 | /// The element type of the array. | ||||||||
| 3170 | QualType ElementType; | ||||||||
| 3171 | |||||||||
| 3172 | SourceLocation loc; | ||||||||
| 3173 | |||||||||
| 3174 | DependentSizedExtVectorType(const ASTContext &Context, QualType ElementType, | ||||||||
| 3175 | QualType can, Expr *SizeExpr, SourceLocation loc); | ||||||||
| 3176 | |||||||||
| 3177 | public: | ||||||||
| 3178 | Expr *getSizeExpr() const { return SizeExpr; } | ||||||||
| 3179 | QualType getElementType() const { return ElementType; } | ||||||||
| 3180 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||
| 3181 | |||||||||
| 3182 | bool isSugared() const { return false; } | ||||||||
| 3183 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3184 | |||||||||
| 3185 | static bool classof(const Type *T) { | ||||||||
| 3186 | return T->getTypeClass() == DependentSizedExtVector; | ||||||||
| 3187 | } | ||||||||
| 3188 | |||||||||
| 3189 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3190 | Profile(ID, Context, getElementType(), getSizeExpr()); | ||||||||
| 3191 | } | ||||||||
| 3192 | |||||||||
| 3193 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 3194 | QualType ElementType, Expr *SizeExpr); | ||||||||
| 3195 | }; | ||||||||
| 3196 | |||||||||
| 3197 | |||||||||
| 3198 | /// Represents a GCC generic vector type. This type is created using | ||||||||
| 3199 | /// __attribute__((vector_size(n)), where "n" specifies the vector size in | ||||||||
| 3200 | /// bytes; or from an Altivec __vector or vector declaration. | ||||||||
| 3201 | /// Since the constructor takes the number of vector elements, the | ||||||||
| 3202 | /// client is responsible for converting the size into the number of elements. | ||||||||
| 3203 | class VectorType : public Type, public llvm::FoldingSetNode { | ||||||||
| 3204 | public: | ||||||||
| 3205 | enum VectorKind { | ||||||||
| 3206 | /// not a target-specific vector type | ||||||||
| 3207 | GenericVector, | ||||||||
| 3208 | |||||||||
| 3209 | /// is AltiVec vector | ||||||||
| 3210 | AltiVecVector, | ||||||||
| 3211 | |||||||||
| 3212 | /// is AltiVec 'vector Pixel' | ||||||||
| 3213 | AltiVecPixel, | ||||||||
| 3214 | |||||||||
| 3215 | /// is AltiVec 'vector bool ...' | ||||||||
| 3216 | AltiVecBool, | ||||||||
| 3217 | |||||||||
| 3218 | /// is ARM Neon vector | ||||||||
| 3219 | NeonVector, | ||||||||
| 3220 | |||||||||
| 3221 | /// is ARM Neon polynomial vector | ||||||||
| 3222 | NeonPolyVector | ||||||||
| 3223 | }; | ||||||||
| 3224 | |||||||||
| 3225 | protected: | ||||||||
| 3226 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 3227 | |||||||||
| 3228 | /// The element type of the vector. | ||||||||
| 3229 | QualType ElementType; | ||||||||
| 3230 | |||||||||
| 3231 | VectorType(QualType vecType, unsigned nElements, QualType canonType, | ||||||||
| 3232 | VectorKind vecKind); | ||||||||
| 3233 | |||||||||
| 3234 | VectorType(TypeClass tc, QualType vecType, unsigned nElements, | ||||||||
| 3235 | QualType canonType, VectorKind vecKind); | ||||||||
| 3236 | |||||||||
| 3237 | public: | ||||||||
| 3238 | QualType getElementType() const { return ElementType; } | ||||||||
| 3239 | unsigned getNumElements() const { return VectorTypeBits.NumElements; } | ||||||||
| 3240 | |||||||||
| 3241 | bool isSugared() const { return false; } | ||||||||
| 3242 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3243 | |||||||||
| 3244 | VectorKind getVectorKind() const { | ||||||||
| 3245 | return VectorKind(VectorTypeBits.VecKind); | ||||||||
| 3246 | } | ||||||||
| 3247 | |||||||||
| 3248 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3249 | Profile(ID, getElementType(), getNumElements(), | ||||||||
| 3250 | getTypeClass(), getVectorKind()); | ||||||||
| 3251 | } | ||||||||
| 3252 | |||||||||
| 3253 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, | ||||||||
| 3254 | unsigned NumElements, TypeClass TypeClass, | ||||||||
| 3255 | VectorKind VecKind) { | ||||||||
| 3256 | ID.AddPointer(ElementType.getAsOpaquePtr()); | ||||||||
| 3257 | ID.AddInteger(NumElements); | ||||||||
| 3258 | ID.AddInteger(TypeClass); | ||||||||
| 3259 | ID.AddInteger(VecKind); | ||||||||
| 3260 | } | ||||||||
| 3261 | |||||||||
| 3262 | static bool classof(const Type *T) { | ||||||||
| 3263 | return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; | ||||||||
| 3264 | } | ||||||||
| 3265 | }; | ||||||||
| 3266 | |||||||||
| 3267 | /// Represents a vector type where either the type or size is dependent. | ||||||||
| 3268 | //// | ||||||||
| 3269 | /// For example: | ||||||||
| 3270 | /// \code | ||||||||
| 3271 | /// template<typename T, int Size> | ||||||||
| 3272 | /// class vector { | ||||||||
| 3273 | /// typedef T __attribute__((vector_size(Size))) type; | ||||||||
| 3274 | /// } | ||||||||
| 3275 | /// \endcode | ||||||||
| 3276 | class DependentVectorType : public Type, public llvm::FoldingSetNode { | ||||||||
| 3277 | friend class ASTContext; | ||||||||
| 3278 | |||||||||
| 3279 | const ASTContext &Context; | ||||||||
| 3280 | QualType ElementType; | ||||||||
| 3281 | Expr *SizeExpr; | ||||||||
| 3282 | SourceLocation Loc; | ||||||||
| 3283 | |||||||||
| 3284 | DependentVectorType(const ASTContext &Context, QualType ElementType, | ||||||||
| 3285 | QualType CanonType, Expr *SizeExpr, | ||||||||
| 3286 | SourceLocation Loc, VectorType::VectorKind vecKind); | ||||||||
| 3287 | |||||||||
| 3288 | public: | ||||||||
| 3289 | Expr *getSizeExpr() const { return SizeExpr; } | ||||||||
| 3290 | QualType getElementType() const { return ElementType; } | ||||||||
| 3291 | SourceLocation getAttributeLoc() const { return Loc; } | ||||||||
| 3292 | VectorType::VectorKind getVectorKind() const { | ||||||||
| 3293 | return VectorType::VectorKind(VectorTypeBits.VecKind); | ||||||||
| 3294 | } | ||||||||
| 3295 | |||||||||
| 3296 | bool isSugared() const { return false; } | ||||||||
| 3297 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3298 | |||||||||
| 3299 | static bool classof(const Type *T) { | ||||||||
| 3300 | return T->getTypeClass() == DependentVector; | ||||||||
| 3301 | } | ||||||||
| 3302 | |||||||||
| 3303 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3304 | Profile(ID, Context, getElementType(), getSizeExpr(), getVectorKind()); | ||||||||
| 3305 | } | ||||||||
| 3306 | |||||||||
| 3307 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 3308 | QualType ElementType, const Expr *SizeExpr, | ||||||||
| 3309 | VectorType::VectorKind VecKind); | ||||||||
| 3310 | }; | ||||||||
| 3311 | |||||||||
| 3312 | /// ExtVectorType - Extended vector type. This type is created using | ||||||||
| 3313 | /// __attribute__((ext_vector_type(n)), where "n" is the number of elements. | ||||||||
| 3314 | /// Unlike vector_size, ext_vector_type is only allowed on typedef's. This | ||||||||
| 3315 | /// class enables syntactic extensions, like Vector Components for accessing | ||||||||
| 3316 | /// points (as .xyzw), colors (as .rgba), and textures (modeled after OpenGL | ||||||||
| 3317 | /// Shading Language). | ||||||||
| 3318 | class ExtVectorType : public VectorType { | ||||||||
| 3319 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 3320 | |||||||||
| 3321 | ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) | ||||||||
| 3322 | : VectorType(ExtVector, vecType, nElements, canonType, GenericVector) {} | ||||||||
| 3323 | |||||||||
| 3324 | public: | ||||||||
| 3325 | static int getPointAccessorIdx(char c) { | ||||||||
| 3326 | switch (c) { | ||||||||
| 3327 | default: return -1; | ||||||||
| 3328 | case 'x': case 'r': return 0; | ||||||||
| 3329 | case 'y': case 'g': return 1; | ||||||||
| 3330 | case 'z': case 'b': return 2; | ||||||||
| 3331 | case 'w': case 'a': return 3; | ||||||||
| 3332 | } | ||||||||
| 3333 | } | ||||||||
| 3334 | |||||||||
| 3335 | static int getNumericAccessorIdx(char c) { | ||||||||
| 3336 | switch (c) { | ||||||||
| 3337 | default: return -1; | ||||||||
| 3338 | case '0': return 0; | ||||||||
| 3339 | case '1': return 1; | ||||||||
| 3340 | case '2': return 2; | ||||||||
| 3341 | case '3': return 3; | ||||||||
| 3342 | case '4': return 4; | ||||||||
| 3343 | case '5': return 5; | ||||||||
| 3344 | case '6': return 6; | ||||||||
| 3345 | case '7': return 7; | ||||||||
| 3346 | case '8': return 8; | ||||||||
| 3347 | case '9': return 9; | ||||||||
| 3348 | case 'A': | ||||||||
| 3349 | case 'a': return 10; | ||||||||
| 3350 | case 'B': | ||||||||
| 3351 | case 'b': return 11; | ||||||||
| 3352 | case 'C': | ||||||||
| 3353 | case 'c': return 12; | ||||||||
| 3354 | case 'D': | ||||||||
| 3355 | case 'd': return 13; | ||||||||
| 3356 | case 'E': | ||||||||
| 3357 | case 'e': return 14; | ||||||||
| 3358 | case 'F': | ||||||||
| 3359 | case 'f': return 15; | ||||||||
| 3360 | } | ||||||||
| 3361 | } | ||||||||
| 3362 | |||||||||
| 3363 | static int getAccessorIdx(char c, bool isNumericAccessor) { | ||||||||
| 3364 | if (isNumericAccessor) | ||||||||
| 3365 | return getNumericAccessorIdx(c); | ||||||||
| 3366 | else | ||||||||
| 3367 | return getPointAccessorIdx(c); | ||||||||
| 3368 | } | ||||||||
| 3369 | |||||||||
| 3370 | bool isAccessorWithinNumElements(char c, bool isNumericAccessor) const { | ||||||||
| 3371 | if (int idx = getAccessorIdx(c, isNumericAccessor)+1) | ||||||||
| 3372 | return unsigned(idx-1) < getNumElements(); | ||||||||
| 3373 | return false; | ||||||||
| 3374 | } | ||||||||
| 3375 | |||||||||
| 3376 | bool isSugared() const { return false; } | ||||||||
| 3377 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3378 | |||||||||
| 3379 | static bool classof(const Type *T) { | ||||||||
| 3380 | return T->getTypeClass() == ExtVector; | ||||||||
| 3381 | } | ||||||||
| 3382 | }; | ||||||||
| 3383 | |||||||||
| 3384 | /// Represents a matrix type, as defined in the Matrix Types clang extensions. | ||||||||
| 3385 | /// __attribute__((matrix_type(rows, columns))), where "rows" specifies | ||||||||
| 3386 | /// number of rows and "columns" specifies the number of columns. | ||||||||
| 3387 | class MatrixType : public Type, public llvm::FoldingSetNode { | ||||||||
| 3388 | protected: | ||||||||
| 3389 | friend class ASTContext; | ||||||||
| 3390 | |||||||||
| 3391 | /// The element type of the matrix. | ||||||||
| 3392 | QualType ElementType; | ||||||||
| 3393 | |||||||||
| 3394 | MatrixType(QualType ElementTy, QualType CanonElementTy); | ||||||||
| 3395 | |||||||||
| 3396 | MatrixType(TypeClass TypeClass, QualType ElementTy, QualType CanonElementTy, | ||||||||
| 3397 | const Expr *RowExpr = nullptr, const Expr *ColumnExpr = nullptr); | ||||||||
| 3398 | |||||||||
| 3399 | public: | ||||||||
| 3400 | /// Returns type of the elements being stored in the matrix | ||||||||
| 3401 | QualType getElementType() const { return ElementType; } | ||||||||
| 3402 | |||||||||
| 3403 | /// Valid elements types are the following: | ||||||||
| 3404 | /// * an integer type (as in C2x 6.2.5p19), but excluding enumerated types | ||||||||
| 3405 | /// and _Bool | ||||||||
| 3406 | /// * the standard floating types float or double | ||||||||
| 3407 | /// * a half-precision floating point type, if one is supported on the target | ||||||||
| 3408 | static bool isValidElementType(QualType T) { | ||||||||
| 3409 | return T->isDependentType() || | ||||||||
| 3410 | (T->isRealType() && !T->isBooleanType() && !T->isEnumeralType()); | ||||||||
| 3411 | } | ||||||||
| 3412 | |||||||||
| 3413 | bool isSugared() const { return false; } | ||||||||
| 3414 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3415 | |||||||||
| 3416 | static bool classof(const Type *T) { | ||||||||
| 3417 | return T->getTypeClass() == ConstantMatrix || | ||||||||
| 3418 | T->getTypeClass() == DependentSizedMatrix; | ||||||||
| 3419 | } | ||||||||
| 3420 | }; | ||||||||
| 3421 | |||||||||
| 3422 | /// Represents a concrete matrix type with constant number of rows and columns | ||||||||
| 3423 | class ConstantMatrixType final : public MatrixType { | ||||||||
| 3424 | protected: | ||||||||
| 3425 | friend class ASTContext; | ||||||||
| 3426 | |||||||||
| 3427 | /// The element type of the matrix. | ||||||||
| 3428 | // FIXME: Appears to be unused? There is also MatrixType::ElementType... | ||||||||
| 3429 | QualType ElementType; | ||||||||
| 3430 | |||||||||
| 3431 | /// Number of rows and columns. | ||||||||
| 3432 | unsigned NumRows; | ||||||||
| 3433 | unsigned NumColumns; | ||||||||
| 3434 | |||||||||
| 3435 | static constexpr unsigned MaxElementsPerDimension = (1 << 20) - 1; | ||||||||
| 3436 | |||||||||
| 3437 | ConstantMatrixType(QualType MatrixElementType, unsigned NRows, | ||||||||
| 3438 | unsigned NColumns, QualType CanonElementType); | ||||||||
| 3439 | |||||||||
| 3440 | ConstantMatrixType(TypeClass typeClass, QualType MatrixType, unsigned NRows, | ||||||||
| 3441 | unsigned NColumns, QualType CanonElementType); | ||||||||
| 3442 | |||||||||
| 3443 | public: | ||||||||
| 3444 | /// Returns the number of rows in the matrix. | ||||||||
| 3445 | unsigned getNumRows() const { return NumRows; } | ||||||||
| 3446 | |||||||||
| 3447 | /// Returns the number of columns in the matrix. | ||||||||
| 3448 | unsigned getNumColumns() const { return NumColumns; } | ||||||||
| 3449 | |||||||||
| 3450 | /// Returns the number of elements required to embed the matrix into a vector. | ||||||||
| 3451 | unsigned getNumElementsFlattened() const { | ||||||||
| 3452 | return getNumRows() * getNumColumns(); | ||||||||
| 3453 | } | ||||||||
| 3454 | |||||||||
| 3455 | /// Returns true if \p NumElements is a valid matrix dimension. | ||||||||
| 3456 | static constexpr bool isDimensionValid(size_t NumElements) { | ||||||||
| 3457 | return NumElements > 0 && NumElements <= MaxElementsPerDimension; | ||||||||
| 3458 | } | ||||||||
| 3459 | |||||||||
| 3460 | /// Returns the maximum number of elements per dimension. | ||||||||
| 3461 | static constexpr unsigned getMaxElementsPerDimension() { | ||||||||
| 3462 | return MaxElementsPerDimension; | ||||||||
| 3463 | } | ||||||||
| 3464 | |||||||||
| 3465 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3466 | Profile(ID, getElementType(), getNumRows(), getNumColumns(), | ||||||||
| 3467 | getTypeClass()); | ||||||||
| 3468 | } | ||||||||
| 3469 | |||||||||
| 3470 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, | ||||||||
| 3471 | unsigned NumRows, unsigned NumColumns, | ||||||||
| 3472 | TypeClass TypeClass) { | ||||||||
| 3473 | ID.AddPointer(ElementType.getAsOpaquePtr()); | ||||||||
| 3474 | ID.AddInteger(NumRows); | ||||||||
| 3475 | ID.AddInteger(NumColumns); | ||||||||
| 3476 | ID.AddInteger(TypeClass); | ||||||||
| 3477 | } | ||||||||
| 3478 | |||||||||
| 3479 | static bool classof(const Type *T) { | ||||||||
| 3480 | return T->getTypeClass() == ConstantMatrix; | ||||||||
| 3481 | } | ||||||||
| 3482 | }; | ||||||||
| 3483 | |||||||||
| 3484 | /// Represents a matrix type where the type and the number of rows and columns | ||||||||
| 3485 | /// is dependent on a template. | ||||||||
| 3486 | class DependentSizedMatrixType final : public MatrixType { | ||||||||
| 3487 | friend class ASTContext; | ||||||||
| 3488 | |||||||||
| 3489 | const ASTContext &Context; | ||||||||
| 3490 | Expr *RowExpr; | ||||||||
| 3491 | Expr *ColumnExpr; | ||||||||
| 3492 | |||||||||
| 3493 | SourceLocation loc; | ||||||||
| 3494 | |||||||||
| 3495 | DependentSizedMatrixType(const ASTContext &Context, QualType ElementType, | ||||||||
| 3496 | QualType CanonicalType, Expr *RowExpr, | ||||||||
| 3497 | Expr *ColumnExpr, SourceLocation loc); | ||||||||
| 3498 | |||||||||
| 3499 | public: | ||||||||
| 3500 | QualType getElementType() const { return ElementType; } | ||||||||
| 3501 | Expr *getRowExpr() const { return RowExpr; } | ||||||||
| 3502 | Expr *getColumnExpr() const { return ColumnExpr; } | ||||||||
| 3503 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||
| 3504 | |||||||||
| 3505 | bool isSugared() const { return false; } | ||||||||
| 3506 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3507 | |||||||||
| 3508 | static bool classof(const Type *T) { | ||||||||
| 3509 | return T->getTypeClass() == DependentSizedMatrix; | ||||||||
| 3510 | } | ||||||||
| 3511 | |||||||||
| 3512 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3513 | Profile(ID, Context, getElementType(), getRowExpr(), getColumnExpr()); | ||||||||
| 3514 | } | ||||||||
| 3515 | |||||||||
| 3516 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 3517 | QualType ElementType, Expr *RowExpr, Expr *ColumnExpr); | ||||||||
| 3518 | }; | ||||||||
| 3519 | |||||||||
| 3520 | /// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base | ||||||||
| 3521 | /// class of FunctionNoProtoType and FunctionProtoType. | ||||||||
| 3522 | class FunctionType : public Type { | ||||||||
| 3523 | // The type returned by the function. | ||||||||
| 3524 | QualType ResultType; | ||||||||
| 3525 | |||||||||
| 3526 | public: | ||||||||
| 3527 | /// Interesting information about a specific parameter that can't simply | ||||||||
| 3528 | /// be reflected in parameter's type. This is only used by FunctionProtoType | ||||||||
| 3529 | /// but is in FunctionType to make this class available during the | ||||||||
| 3530 | /// specification of the bases of FunctionProtoType. | ||||||||
| 3531 | /// | ||||||||
| 3532 | /// It makes sense to model language features this way when there's some | ||||||||
| 3533 | /// sort of parameter-specific override (such as an attribute) that | ||||||||
| 3534 | /// affects how the function is called. For example, the ARC ns_consumed | ||||||||
| 3535 | /// attribute changes whether a parameter is passed at +0 (the default) | ||||||||
| 3536 | /// or +1 (ns_consumed). This must be reflected in the function type, | ||||||||
| 3537 | /// but isn't really a change to the parameter type. | ||||||||
| 3538 | /// | ||||||||
| 3539 | /// One serious disadvantage of modelling language features this way is | ||||||||
| 3540 | /// that they generally do not work with language features that attempt | ||||||||
| 3541 | /// to destructure types. For example, template argument deduction will | ||||||||
| 3542 | /// not be able to match a parameter declared as | ||||||||
| 3543 | /// T (*)(U) | ||||||||
| 3544 | /// against an argument of type | ||||||||
| 3545 | /// void (*)(__attribute__((ns_consumed)) id) | ||||||||
| 3546 | /// because the substitution of T=void, U=id into the former will | ||||||||
| 3547 | /// not produce the latter. | ||||||||
| 3548 | class ExtParameterInfo { | ||||||||
| 3549 | enum { | ||||||||
| 3550 | ABIMask = 0x0F, | ||||||||
| 3551 | IsConsumed = 0x10, | ||||||||
| 3552 | HasPassObjSize = 0x20, | ||||||||
| 3553 | IsNoEscape = 0x40, | ||||||||
| 3554 | }; | ||||||||
| 3555 | unsigned char Data = 0; | ||||||||
| 3556 | |||||||||
| 3557 | public: | ||||||||
| 3558 | ExtParameterInfo() = default; | ||||||||
| 3559 | |||||||||
| 3560 | /// Return the ABI treatment of this parameter. | ||||||||
| 3561 | ParameterABI getABI() const { return ParameterABI(Data & ABIMask); } | ||||||||
| 3562 | ExtParameterInfo withABI(ParameterABI kind) const { | ||||||||
| 3563 | ExtParameterInfo copy = *this; | ||||||||
| 3564 | copy.Data = (copy.Data & ~ABIMask) | unsigned(kind); | ||||||||
| 3565 | return copy; | ||||||||
| 3566 | } | ||||||||
| 3567 | |||||||||
| 3568 | /// Is this parameter considered "consumed" by Objective-C ARC? | ||||||||
| 3569 | /// Consumed parameters must have retainable object type. | ||||||||
| 3570 | bool isConsumed() const { return (Data & IsConsumed); } | ||||||||
| 3571 | ExtParameterInfo withIsConsumed(bool consumed) const { | ||||||||
| 3572 | ExtParameterInfo copy = *this; | ||||||||
| 3573 | if (consumed) | ||||||||
| 3574 | copy.Data |= IsConsumed; | ||||||||
| 3575 | else | ||||||||
| 3576 | copy.Data &= ~IsConsumed; | ||||||||
| 3577 | return copy; | ||||||||
| 3578 | } | ||||||||
| 3579 | |||||||||
| 3580 | bool hasPassObjectSize() const { return Data & HasPassObjSize; } | ||||||||
| 3581 | ExtParameterInfo withHasPassObjectSize() const { | ||||||||
| 3582 | ExtParameterInfo Copy = *this; | ||||||||
| 3583 | Copy.Data |= HasPassObjSize; | ||||||||
| 3584 | return Copy; | ||||||||
| 3585 | } | ||||||||
| 3586 | |||||||||
| 3587 | bool isNoEscape() const { return Data & IsNoEscape; } | ||||||||
| 3588 | ExtParameterInfo withIsNoEscape(bool NoEscape) const { | ||||||||
| 3589 | ExtParameterInfo Copy = *this; | ||||||||
| 3590 | if (NoEscape) | ||||||||
| 3591 | Copy.Data |= IsNoEscape; | ||||||||
| 3592 | else | ||||||||
| 3593 | Copy.Data &= ~IsNoEscape; | ||||||||
| 3594 | return Copy; | ||||||||
| 3595 | } | ||||||||
| 3596 | |||||||||
| 3597 | unsigned char getOpaqueValue() const { return Data; } | ||||||||
| 3598 | static ExtParameterInfo getFromOpaqueValue(unsigned char data) { | ||||||||
| 3599 | ExtParameterInfo result; | ||||||||
| 3600 | result.Data = data; | ||||||||
| 3601 | return result; | ||||||||
| 3602 | } | ||||||||
| 3603 | |||||||||
| 3604 | friend bool operator==(ExtParameterInfo lhs, ExtParameterInfo rhs) { | ||||||||
| 3605 | return lhs.Data == rhs.Data; | ||||||||
| 3606 | } | ||||||||
| 3607 | |||||||||
| 3608 | friend bool operator!=(ExtParameterInfo lhs, ExtParameterInfo rhs) { | ||||||||
| 3609 | return lhs.Data != rhs.Data; | ||||||||
| 3610 | } | ||||||||
| 3611 | }; | ||||||||
| 3612 | |||||||||
| 3613 | /// A class which abstracts out some details necessary for | ||||||||
| 3614 | /// making a call. | ||||||||
| 3615 | /// | ||||||||
| 3616 | /// It is not actually used directly for storing this information in | ||||||||
| 3617 | /// a FunctionType, although FunctionType does currently use the | ||||||||
| 3618 | /// same bit-pattern. | ||||||||
| 3619 | /// | ||||||||
| 3620 | // If you add a field (say Foo), other than the obvious places (both, | ||||||||
| 3621 | // constructors, compile failures), what you need to update is | ||||||||
| 3622 | // * Operator== | ||||||||
| 3623 | // * getFoo | ||||||||
| 3624 | // * withFoo | ||||||||
| 3625 | // * functionType. Add Foo, getFoo. | ||||||||
| 3626 | // * ASTContext::getFooType | ||||||||
| 3627 | // * ASTContext::mergeFunctionTypes | ||||||||
| 3628 | // * FunctionNoProtoType::Profile | ||||||||
| 3629 | // * FunctionProtoType::Profile | ||||||||
| 3630 | // * TypePrinter::PrintFunctionProto | ||||||||
| 3631 | // * AST read and write | ||||||||
| 3632 | // * Codegen | ||||||||
| 3633 | class ExtInfo { | ||||||||
| 3634 | friend class FunctionType; | ||||||||
| 3635 | |||||||||
| 3636 | // Feel free to rearrange or add bits, but if you go over 16, you'll need to | ||||||||
| 3637 | // adjust the Bits field below, and if you add bits, you'll need to adjust | ||||||||
| 3638 | // Type::FunctionTypeBitfields::ExtInfo as well. | ||||||||
| 3639 | |||||||||
| 3640 | // | CC |noreturn|produces|nocallersavedregs|regparm|nocfcheck|cmsenscall| | ||||||||
| 3641 | // |0 .. 4| 5 | 6 | 7 |8 .. 10| 11 | 12 | | ||||||||
| 3642 | // | ||||||||
| 3643 | // regparm is either 0 (no regparm attribute) or the regparm value+1. | ||||||||
| 3644 | enum { CallConvMask = 0x1F }; | ||||||||
| 3645 | enum { NoReturnMask = 0x20 }; | ||||||||
| 3646 | enum { ProducesResultMask = 0x40 }; | ||||||||
| 3647 | enum { NoCallerSavedRegsMask = 0x80 }; | ||||||||
| 3648 | enum { | ||||||||
| 3649 | RegParmMask = 0x700, | ||||||||
| 3650 | RegParmOffset = 8 | ||||||||
| 3651 | }; | ||||||||
| 3652 | enum { NoCfCheckMask = 0x800 }; | ||||||||
| 3653 | enum { CmseNSCallMask = 0x1000 }; | ||||||||
| 3654 | uint16_t Bits = CC_C; | ||||||||
| 3655 | |||||||||
| 3656 | ExtInfo(unsigned Bits) : Bits(static_cast<uint16_t>(Bits)) {} | ||||||||
| 3657 | |||||||||
| 3658 | public: | ||||||||
| 3659 | // Constructor with no defaults. Use this when you know that you | ||||||||
| 3660 | // have all the elements (when reading an AST file for example). | ||||||||
| 3661 | ExtInfo(bool noReturn, bool hasRegParm, unsigned regParm, CallingConv cc, | ||||||||
| 3662 | bool producesResult, bool noCallerSavedRegs, bool NoCfCheck, | ||||||||
| 3663 | bool cmseNSCall) { | ||||||||
| 3664 | assert((!hasRegParm || regParm < 7) && "Invalid regparm value")(((!hasRegParm || regParm < 7) && "Invalid regparm value" ) ? static_cast<void> (0) : __assert_fail ("(!hasRegParm || regParm < 7) && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 3664, __PRETTY_FUNCTION__)); | ||||||||
| 3665 | Bits = ((unsigned)cc) | (noReturn ? NoReturnMask : 0) | | ||||||||
| 3666 | (producesResult ? ProducesResultMask : 0) | | ||||||||
| 3667 | (noCallerSavedRegs ? NoCallerSavedRegsMask : 0) | | ||||||||
| 3668 | (hasRegParm ? ((regParm + 1) << RegParmOffset) : 0) | | ||||||||
| 3669 | (NoCfCheck ? NoCfCheckMask : 0) | | ||||||||
| 3670 | (cmseNSCall ? CmseNSCallMask : 0); | ||||||||
| 3671 | } | ||||||||
| 3672 | |||||||||
| 3673 | // Constructor with all defaults. Use when for example creating a | ||||||||
| 3674 | // function known to use defaults. | ||||||||
| 3675 | ExtInfo() = default; | ||||||||
| 3676 | |||||||||
| 3677 | // Constructor with just the calling convention, which is an important part | ||||||||
| 3678 | // of the canonical type. | ||||||||
| 3679 | ExtInfo(CallingConv CC) : Bits(CC) {} | ||||||||
| 3680 | |||||||||
| 3681 | bool getNoReturn() const { return Bits & NoReturnMask; } | ||||||||
| 3682 | bool getProducesResult() const { return Bits & ProducesResultMask; } | ||||||||
| 3683 | bool getCmseNSCall() const { return Bits & CmseNSCallMask; } | ||||||||
| 3684 | bool getNoCallerSavedRegs() const { return Bits & NoCallerSavedRegsMask; } | ||||||||
| 3685 | bool getNoCfCheck() const { return Bits & NoCfCheckMask; } | ||||||||
| 3686 | bool getHasRegParm() const { return ((Bits & RegParmMask) >> RegParmOffset) != 0; } | ||||||||
| 3687 | |||||||||
| 3688 | unsigned getRegParm() const { | ||||||||
| 3689 | unsigned RegParm = (Bits & RegParmMask) >> RegParmOffset; | ||||||||
| 3690 | if (RegParm > 0) | ||||||||
| 3691 | --RegParm; | ||||||||
| 3692 | return RegParm; | ||||||||
| 3693 | } | ||||||||
| 3694 | |||||||||
| 3695 | CallingConv getCC() const { return CallingConv(Bits & CallConvMask); } | ||||||||
| 3696 | |||||||||
| 3697 | bool operator==(ExtInfo Other) const { | ||||||||
| 3698 | return Bits == Other.Bits; | ||||||||
| 3699 | } | ||||||||
| 3700 | bool operator!=(ExtInfo Other) const { | ||||||||
| 3701 | return Bits != Other.Bits; | ||||||||
| 3702 | } | ||||||||
| 3703 | |||||||||
| 3704 | // Note that we don't have setters. That is by design, use | ||||||||
| 3705 | // the following with methods instead of mutating these objects. | ||||||||
| 3706 | |||||||||
| 3707 | ExtInfo withNoReturn(bool noReturn) const { | ||||||||
| 3708 | if (noReturn) | ||||||||
| 3709 | return ExtInfo(Bits | NoReturnMask); | ||||||||
| 3710 | else | ||||||||
| 3711 | return ExtInfo(Bits & ~NoReturnMask); | ||||||||
| 3712 | } | ||||||||
| 3713 | |||||||||
| 3714 | ExtInfo withProducesResult(bool producesResult) const { | ||||||||
| 3715 | if (producesResult) | ||||||||
| 3716 | return ExtInfo(Bits | ProducesResultMask); | ||||||||
| 3717 | else | ||||||||
| 3718 | return ExtInfo(Bits & ~ProducesResultMask); | ||||||||
| 3719 | } | ||||||||
| 3720 | |||||||||
| 3721 | ExtInfo withCmseNSCall(bool cmseNSCall) const { | ||||||||
| 3722 | if (cmseNSCall) | ||||||||
| 3723 | return ExtInfo(Bits | CmseNSCallMask); | ||||||||
| 3724 | else | ||||||||
| 3725 | return ExtInfo(Bits & ~CmseNSCallMask); | ||||||||
| 3726 | } | ||||||||
| 3727 | |||||||||
| 3728 | ExtInfo withNoCallerSavedRegs(bool noCallerSavedRegs) const { | ||||||||
| 3729 | if (noCallerSavedRegs) | ||||||||
| 3730 | return ExtInfo(Bits | NoCallerSavedRegsMask); | ||||||||
| 3731 | else | ||||||||
| 3732 | return ExtInfo(Bits & ~NoCallerSavedRegsMask); | ||||||||
| 3733 | } | ||||||||
| 3734 | |||||||||
| 3735 | ExtInfo withNoCfCheck(bool noCfCheck) const { | ||||||||
| 3736 | if (noCfCheck) | ||||||||
| 3737 | return ExtInfo(Bits | NoCfCheckMask); | ||||||||
| 3738 | else | ||||||||
| 3739 | return ExtInfo(Bits & ~NoCfCheckMask); | ||||||||
| 3740 | } | ||||||||
| 3741 | |||||||||
| 3742 | ExtInfo withRegParm(unsigned RegParm) const { | ||||||||
| 3743 | assert(RegParm < 7 && "Invalid regparm value")((RegParm < 7 && "Invalid regparm value") ? static_cast <void> (0) : __assert_fail ("RegParm < 7 && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 3743, __PRETTY_FUNCTION__)); | ||||||||
| 3744 | return ExtInfo((Bits & ~RegParmMask) | | ||||||||
| 3745 | ((RegParm + 1) << RegParmOffset)); | ||||||||
| 3746 | } | ||||||||
| 3747 | |||||||||
| 3748 | ExtInfo withCallingConv(CallingConv cc) const { | ||||||||
| 3749 | return ExtInfo((Bits & ~CallConvMask) | (unsigned) cc); | ||||||||
| 3750 | } | ||||||||
| 3751 | |||||||||
| 3752 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||
| 3753 | ID.AddInteger(Bits); | ||||||||
| 3754 | } | ||||||||
| 3755 | }; | ||||||||
| 3756 | |||||||||
| 3757 | /// A simple holder for a QualType representing a type in an | ||||||||
| 3758 | /// exception specification. Unfortunately needed by FunctionProtoType | ||||||||
| 3759 | /// because TrailingObjects cannot handle repeated types. | ||||||||
| 3760 | struct ExceptionType { QualType Type; }; | ||||||||
| 3761 | |||||||||
| 3762 | /// A simple holder for various uncommon bits which do not fit in | ||||||||
| 3763 | /// FunctionTypeBitfields. Aligned to alignof(void *) to maintain the | ||||||||
| 3764 | /// alignment of subsequent objects in TrailingObjects. You must update | ||||||||
| 3765 | /// hasExtraBitfields in FunctionProtoType after adding extra data here. | ||||||||
| 3766 | struct alignas(void *) FunctionTypeExtraBitfields { | ||||||||
| 3767 | /// The number of types in the exception specification. | ||||||||
| 3768 | /// A whole unsigned is not needed here and according to | ||||||||
| 3769 | /// [implimits] 8 bits would be enough here. | ||||||||
| 3770 | unsigned NumExceptionType; | ||||||||
| 3771 | }; | ||||||||
| 3772 | |||||||||
| 3773 | protected: | ||||||||
| 3774 | FunctionType(TypeClass tc, QualType res, QualType Canonical, | ||||||||
| 3775 | TypeDependence Dependence, ExtInfo Info) | ||||||||
| 3776 | : Type(tc, Canonical, Dependence), ResultType(res) { | ||||||||
| 3777 | FunctionTypeBits.ExtInfo = Info.Bits; | ||||||||
| 3778 | } | ||||||||
| 3779 | |||||||||
| 3780 | Qualifiers getFastTypeQuals() const { | ||||||||
| 3781 | return Qualifiers::fromFastMask(FunctionTypeBits.FastTypeQuals); | ||||||||
| 3782 | } | ||||||||
| 3783 | |||||||||
| 3784 | public: | ||||||||
| 3785 | QualType getReturnType() const { return ResultType; } | ||||||||
| 3786 | |||||||||
| 3787 | bool getHasRegParm() const { return getExtInfo().getHasRegParm(); } | ||||||||
| 3788 | unsigned getRegParmType() const { return getExtInfo().getRegParm(); } | ||||||||
| 3789 | |||||||||
| 3790 | /// Determine whether this function type includes the GNU noreturn | ||||||||
| 3791 | /// attribute. The C++11 [[noreturn]] attribute does not affect the function | ||||||||
| 3792 | /// type. | ||||||||
| 3793 | bool getNoReturnAttr() const { return getExtInfo().getNoReturn(); } | ||||||||
| 3794 | |||||||||
| 3795 | bool getCmseNSCallAttr() const { return getExtInfo().getCmseNSCall(); } | ||||||||
| 3796 | CallingConv getCallConv() const { return getExtInfo().getCC(); } | ||||||||
| 3797 | ExtInfo getExtInfo() const { return ExtInfo(FunctionTypeBits.ExtInfo); } | ||||||||
| 3798 | |||||||||
| 3799 | static_assert((~Qualifiers::FastMask & Qualifiers::CVRMask) == 0, | ||||||||
| 3800 | "Const, volatile and restrict are assumed to be a subset of " | ||||||||
| 3801 | "the fast qualifiers."); | ||||||||
| 3802 | |||||||||
| 3803 | bool isConst() const { return getFastTypeQuals().hasConst(); } | ||||||||
| 3804 | bool isVolatile() const { return getFastTypeQuals().hasVolatile(); } | ||||||||
| 3805 | bool isRestrict() const { return getFastTypeQuals().hasRestrict(); } | ||||||||
| 3806 | |||||||||
| 3807 | /// Determine the type of an expression that calls a function of | ||||||||
| 3808 | /// this type. | ||||||||
| 3809 | QualType getCallResultType(const ASTContext &Context) const { | ||||||||
| 3810 | return getReturnType().getNonLValueExprType(Context); | ||||||||
| 3811 | } | ||||||||
| 3812 | |||||||||
| 3813 | static StringRef getNameForCallConv(CallingConv CC); | ||||||||
| 3814 | |||||||||
| 3815 | static bool classof(const Type *T) { | ||||||||
| 3816 | return T->getTypeClass() == FunctionNoProto || | ||||||||
| 3817 | T->getTypeClass() == FunctionProto; | ||||||||
| 3818 | } | ||||||||
| 3819 | }; | ||||||||
| 3820 | |||||||||
| 3821 | /// Represents a K&R-style 'int foo()' function, which has | ||||||||
| 3822 | /// no information available about its arguments. | ||||||||
| 3823 | class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { | ||||||||
| 3824 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 3825 | |||||||||
| 3826 | FunctionNoProtoType(QualType Result, QualType Canonical, ExtInfo Info) | ||||||||
| 3827 | : FunctionType(FunctionNoProto, Result, Canonical, | ||||||||
| 3828 | Result->getDependence() & | ||||||||
| 3829 | ~(TypeDependence::DependentInstantiation | | ||||||||
| 3830 | TypeDependence::UnexpandedPack), | ||||||||
| 3831 | Info) {} | ||||||||
| 3832 | |||||||||
| 3833 | public: | ||||||||
| 3834 | // No additional state past what FunctionType provides. | ||||||||
| 3835 | |||||||||
| 3836 | bool isSugared() const { return false; } | ||||||||
| 3837 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 3838 | |||||||||
| 3839 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 3840 | Profile(ID, getReturnType(), getExtInfo()); | ||||||||
| 3841 | } | ||||||||
| 3842 | |||||||||
| 3843 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType, | ||||||||
| 3844 | ExtInfo Info) { | ||||||||
| 3845 | Info.Profile(ID); | ||||||||
| 3846 | ID.AddPointer(ResultType.getAsOpaquePtr()); | ||||||||
| 3847 | } | ||||||||
| 3848 | |||||||||
| 3849 | static bool classof(const Type *T) { | ||||||||
| 3850 | return T->getTypeClass() == FunctionNoProto; | ||||||||
| 3851 | } | ||||||||
| 3852 | }; | ||||||||
| 3853 | |||||||||
| 3854 | /// Represents a prototype with parameter type info, e.g. | ||||||||
| 3855 | /// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no | ||||||||
| 3856 | /// parameters, not as having a single void parameter. Such a type can have | ||||||||
| 3857 | /// an exception specification, but this specification is not part of the | ||||||||
| 3858 | /// canonical type. FunctionProtoType has several trailing objects, some of | ||||||||
| 3859 | /// which optional. For more information about the trailing objects see | ||||||||
| 3860 | /// the first comment inside FunctionProtoType. | ||||||||
| 3861 | class FunctionProtoType final | ||||||||
| 3862 | : public FunctionType, | ||||||||
| 3863 | public llvm::FoldingSetNode, | ||||||||
| 3864 | private llvm::TrailingObjects< | ||||||||
| 3865 | FunctionProtoType, QualType, SourceLocation, | ||||||||
| 3866 | FunctionType::FunctionTypeExtraBitfields, FunctionType::ExceptionType, | ||||||||
| 3867 | Expr *, FunctionDecl *, FunctionType::ExtParameterInfo, Qualifiers> { | ||||||||
| 3868 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 3869 | friend TrailingObjects; | ||||||||
| 3870 | |||||||||
| 3871 | // FunctionProtoType is followed by several trailing objects, some of | ||||||||
| 3872 | // which optional. They are in order: | ||||||||
| 3873 | // | ||||||||
| 3874 | // * An array of getNumParams() QualType holding the parameter types. | ||||||||
| 3875 | // Always present. Note that for the vast majority of FunctionProtoType, | ||||||||
| 3876 | // these will be the only trailing objects. | ||||||||
| 3877 | // | ||||||||
| 3878 | // * Optionally if the function is variadic, the SourceLocation of the | ||||||||
| 3879 | // ellipsis. | ||||||||
| 3880 | // | ||||||||
| 3881 | // * Optionally if some extra data is stored in FunctionTypeExtraBitfields | ||||||||
| 3882 | // (see FunctionTypeExtraBitfields and FunctionTypeBitfields): | ||||||||
| 3883 | // a single FunctionTypeExtraBitfields. Present if and only if | ||||||||
| 3884 | // hasExtraBitfields() is true. | ||||||||
| 3885 | // | ||||||||
| 3886 | // * Optionally exactly one of: | ||||||||
| 3887 | // * an array of getNumExceptions() ExceptionType, | ||||||||
| 3888 | // * a single Expr *, | ||||||||
| 3889 | // * a pair of FunctionDecl *, | ||||||||
| 3890 | // * a single FunctionDecl * | ||||||||
| 3891 | // used to store information about the various types of exception | ||||||||
| 3892 | // specification. See getExceptionSpecSize for the details. | ||||||||
| 3893 | // | ||||||||
| 3894 | // * Optionally an array of getNumParams() ExtParameterInfo holding | ||||||||
| 3895 | // an ExtParameterInfo for each of the parameters. Present if and | ||||||||
| 3896 | // only if hasExtParameterInfos() is true. | ||||||||
| 3897 | // | ||||||||
| 3898 | // * Optionally a Qualifiers object to represent extra qualifiers that can't | ||||||||
| 3899 | // be represented by FunctionTypeBitfields.FastTypeQuals. Present if and only | ||||||||
| 3900 | // if hasExtQualifiers() is true. | ||||||||
| 3901 | // | ||||||||
| 3902 | // The optional FunctionTypeExtraBitfields has to be before the data | ||||||||
| 3903 | // related to the exception specification since it contains the number | ||||||||
| 3904 | // of exception types. | ||||||||
| 3905 | // | ||||||||
| 3906 | // We put the ExtParameterInfos last. If all were equal, it would make | ||||||||
| 3907 | // more sense to put these before the exception specification, because | ||||||||
| 3908 | // it's much easier to skip past them compared to the elaborate switch | ||||||||
| 3909 | // required to skip the exception specification. However, all is not | ||||||||
| 3910 | // equal; ExtParameterInfos are used to model very uncommon features, | ||||||||
| 3911 | // and it's better not to burden the more common paths. | ||||||||
| 3912 | |||||||||
| 3913 | public: | ||||||||
| 3914 | /// Holds information about the various types of exception specification. | ||||||||
| 3915 | /// ExceptionSpecInfo is not stored as such in FunctionProtoType but is | ||||||||
| 3916 | /// used to group together the various bits of information about the | ||||||||
| 3917 | /// exception specification. | ||||||||
| 3918 | struct ExceptionSpecInfo { | ||||||||
| 3919 | /// The kind of exception specification this is. | ||||||||
| 3920 | ExceptionSpecificationType Type = EST_None; | ||||||||
| 3921 | |||||||||
| 3922 | /// Explicitly-specified list of exception types. | ||||||||
| 3923 | ArrayRef<QualType> Exceptions; | ||||||||
| 3924 | |||||||||
| 3925 | /// Noexcept expression, if this is a computed noexcept specification. | ||||||||
| 3926 | Expr *NoexceptExpr = nullptr; | ||||||||
| 3927 | |||||||||
| 3928 | /// The function whose exception specification this is, for | ||||||||
| 3929 | /// EST_Unevaluated and EST_Uninstantiated. | ||||||||
| 3930 | FunctionDecl *SourceDecl = nullptr; | ||||||||
| 3931 | |||||||||
| 3932 | /// The function template whose exception specification this is instantiated | ||||||||
| 3933 | /// from, for EST_Uninstantiated. | ||||||||
| 3934 | FunctionDecl *SourceTemplate = nullptr; | ||||||||
| 3935 | |||||||||
| 3936 | ExceptionSpecInfo() = default; | ||||||||
| 3937 | |||||||||
| 3938 | ExceptionSpecInfo(ExceptionSpecificationType EST) : Type(EST) {} | ||||||||
| 3939 | }; | ||||||||
| 3940 | |||||||||
| 3941 | /// Extra information about a function prototype. ExtProtoInfo is not | ||||||||
| 3942 | /// stored as such in FunctionProtoType but is used to group together | ||||||||
| 3943 | /// the various bits of extra information about a function prototype. | ||||||||
| 3944 | struct ExtProtoInfo { | ||||||||
| 3945 | FunctionType::ExtInfo ExtInfo; | ||||||||
| 3946 | bool Variadic : 1; | ||||||||
| 3947 | bool HasTrailingReturn : 1; | ||||||||
| 3948 | Qualifiers TypeQuals; | ||||||||
| 3949 | RefQualifierKind RefQualifier = RQ_None; | ||||||||
| 3950 | ExceptionSpecInfo ExceptionSpec; | ||||||||
| 3951 | const ExtParameterInfo *ExtParameterInfos = nullptr; | ||||||||
| 3952 | SourceLocation EllipsisLoc; | ||||||||
| 3953 | |||||||||
| 3954 | ExtProtoInfo() : Variadic(false), HasTrailingReturn(false) {} | ||||||||
| 3955 | |||||||||
| 3956 | ExtProtoInfo(CallingConv CC) | ||||||||
| 3957 | : ExtInfo(CC), Variadic(false), HasTrailingReturn(false) {} | ||||||||
| 3958 | |||||||||
| 3959 | ExtProtoInfo withExceptionSpec(const ExceptionSpecInfo &ESI) { | ||||||||
| 3960 | ExtProtoInfo Result(*this); | ||||||||
| 3961 | Result.ExceptionSpec = ESI; | ||||||||
| 3962 | return Result; | ||||||||
| 3963 | } | ||||||||
| 3964 | }; | ||||||||
| 3965 | |||||||||
| 3966 | private: | ||||||||
| 3967 | unsigned numTrailingObjects(OverloadToken<QualType>) const { | ||||||||
| 3968 | return getNumParams(); | ||||||||
| 3969 | } | ||||||||
| 3970 | |||||||||
| 3971 | unsigned numTrailingObjects(OverloadToken<SourceLocation>) const { | ||||||||
| 3972 | return isVariadic(); | ||||||||
| 3973 | } | ||||||||
| 3974 | |||||||||
| 3975 | unsigned numTrailingObjects(OverloadToken<FunctionTypeExtraBitfields>) const { | ||||||||
| 3976 | return hasExtraBitfields(); | ||||||||
| 3977 | } | ||||||||
| 3978 | |||||||||
| 3979 | unsigned numTrailingObjects(OverloadToken<ExceptionType>) const { | ||||||||
| 3980 | return getExceptionSpecSize().NumExceptionType; | ||||||||
| 3981 | } | ||||||||
| 3982 | |||||||||
| 3983 | unsigned numTrailingObjects(OverloadToken<Expr *>) const { | ||||||||
| 3984 | return getExceptionSpecSize().NumExprPtr; | ||||||||
| 3985 | } | ||||||||
| 3986 | |||||||||
| 3987 | unsigned numTrailingObjects(OverloadToken<FunctionDecl *>) const { | ||||||||
| 3988 | return getExceptionSpecSize().NumFunctionDeclPtr; | ||||||||
| 3989 | } | ||||||||
| 3990 | |||||||||
| 3991 | unsigned numTrailingObjects(OverloadToken<ExtParameterInfo>) const { | ||||||||
| 3992 | return hasExtParameterInfos() ? getNumParams() : 0; | ||||||||
| 3993 | } | ||||||||
| 3994 | |||||||||
| 3995 | /// Determine whether there are any argument types that | ||||||||
| 3996 | /// contain an unexpanded parameter pack. | ||||||||
| 3997 | static bool containsAnyUnexpandedParameterPack(const QualType *ArgArray, | ||||||||
| 3998 | unsigned numArgs) { | ||||||||
| 3999 | for (unsigned Idx = 0; Idx < numArgs; ++Idx) | ||||||||
| 4000 | if (ArgArray[Idx]->containsUnexpandedParameterPack()) | ||||||||
| 4001 | return true; | ||||||||
| 4002 | |||||||||
| 4003 | return false; | ||||||||
| 4004 | } | ||||||||
| 4005 | |||||||||
| 4006 | FunctionProtoType(QualType result, ArrayRef<QualType> params, | ||||||||
| 4007 | QualType canonical, const ExtProtoInfo &epi); | ||||||||
| 4008 | |||||||||
| 4009 | /// This struct is returned by getExceptionSpecSize and is used to | ||||||||
| 4010 | /// translate an ExceptionSpecificationType to the number and kind | ||||||||
| 4011 | /// of trailing objects related to the exception specification. | ||||||||
| 4012 | struct ExceptionSpecSizeHolder { | ||||||||
| 4013 | unsigned NumExceptionType; | ||||||||
| 4014 | unsigned NumExprPtr; | ||||||||
| 4015 | unsigned NumFunctionDeclPtr; | ||||||||
| 4016 | }; | ||||||||
| 4017 | |||||||||
| 4018 | /// Return the number and kind of trailing objects | ||||||||
| 4019 | /// related to the exception specification. | ||||||||
| 4020 | static ExceptionSpecSizeHolder | ||||||||
| 4021 | getExceptionSpecSize(ExceptionSpecificationType EST, unsigned NumExceptions) { | ||||||||
| 4022 | switch (EST) { | ||||||||
| 4023 | case EST_None: | ||||||||
| 4024 | case EST_DynamicNone: | ||||||||
| 4025 | case EST_MSAny: | ||||||||
| 4026 | case EST_BasicNoexcept: | ||||||||
| 4027 | case EST_Unparsed: | ||||||||
| 4028 | case EST_NoThrow: | ||||||||
| 4029 | return {0, 0, 0}; | ||||||||
| 4030 | |||||||||
| 4031 | case EST_Dynamic: | ||||||||
| 4032 | return {NumExceptions, 0, 0}; | ||||||||
| 4033 | |||||||||
| 4034 | case EST_DependentNoexcept: | ||||||||
| 4035 | case EST_NoexceptFalse: | ||||||||
| 4036 | case EST_NoexceptTrue: | ||||||||
| 4037 | return {0, 1, 0}; | ||||||||
| 4038 | |||||||||
| 4039 | case EST_Uninstantiated: | ||||||||
| 4040 | return {0, 0, 2}; | ||||||||
| 4041 | |||||||||
| 4042 | case EST_Unevaluated: | ||||||||
| 4043 | return {0, 0, 1}; | ||||||||
| 4044 | } | ||||||||
| 4045 | llvm_unreachable("bad exception specification kind")::llvm::llvm_unreachable_internal("bad exception specification kind" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4045); | ||||||||
| 4046 | } | ||||||||
| 4047 | |||||||||
| 4048 | /// Return the number and kind of trailing objects | ||||||||
| 4049 | /// related to the exception specification. | ||||||||
| 4050 | ExceptionSpecSizeHolder getExceptionSpecSize() const { | ||||||||
| 4051 | return getExceptionSpecSize(getExceptionSpecType(), getNumExceptions()); | ||||||||
| 4052 | } | ||||||||
| 4053 | |||||||||
| 4054 | /// Whether the trailing FunctionTypeExtraBitfields is present. | ||||||||
| 4055 | static bool hasExtraBitfields(ExceptionSpecificationType EST) { | ||||||||
| 4056 | // If the exception spec type is EST_Dynamic then we have > 0 exception | ||||||||
| 4057 | // types and the exact number is stored in FunctionTypeExtraBitfields. | ||||||||
| 4058 | return EST == EST_Dynamic; | ||||||||
| 4059 | } | ||||||||
| 4060 | |||||||||
| 4061 | /// Whether the trailing FunctionTypeExtraBitfields is present. | ||||||||
| 4062 | bool hasExtraBitfields() const { | ||||||||
| 4063 | return hasExtraBitfields(getExceptionSpecType()); | ||||||||
| 4064 | } | ||||||||
| 4065 | |||||||||
| 4066 | bool hasExtQualifiers() const { | ||||||||
| 4067 | return FunctionTypeBits.HasExtQuals; | ||||||||
| 4068 | } | ||||||||
| 4069 | |||||||||
| 4070 | public: | ||||||||
| 4071 | unsigned getNumParams() const { return FunctionTypeBits.NumParams; } | ||||||||
| 4072 | |||||||||
| 4073 | QualType getParamType(unsigned i) const { | ||||||||
| 4074 | assert(i < getNumParams() && "invalid parameter index")((i < getNumParams() && "invalid parameter index") ? static_cast<void> (0) : __assert_fail ("i < getNumParams() && \"invalid parameter index\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4074, __PRETTY_FUNCTION__)); | ||||||||
| 4075 | return param_type_begin()[i]; | ||||||||
| 4076 | } | ||||||||
| 4077 | |||||||||
| 4078 | ArrayRef<QualType> getParamTypes() const { | ||||||||
| 4079 | return llvm::makeArrayRef(param_type_begin(), param_type_end()); | ||||||||
| 4080 | } | ||||||||
| 4081 | |||||||||
| 4082 | ExtProtoInfo getExtProtoInfo() const { | ||||||||
| 4083 | ExtProtoInfo EPI; | ||||||||
| 4084 | EPI.ExtInfo = getExtInfo(); | ||||||||
| 4085 | EPI.Variadic = isVariadic(); | ||||||||
| 4086 | EPI.EllipsisLoc = getEllipsisLoc(); | ||||||||
| 4087 | EPI.HasTrailingReturn = hasTrailingReturn(); | ||||||||
| 4088 | EPI.ExceptionSpec = getExceptionSpecInfo(); | ||||||||
| 4089 | EPI.TypeQuals = getMethodQuals(); | ||||||||
| 4090 | EPI.RefQualifier = getRefQualifier(); | ||||||||
| 4091 | EPI.ExtParameterInfos = getExtParameterInfosOrNull(); | ||||||||
| 4092 | return EPI; | ||||||||
| 4093 | } | ||||||||
| 4094 | |||||||||
| 4095 | /// Get the kind of exception specification on this function. | ||||||||
| 4096 | ExceptionSpecificationType getExceptionSpecType() const { | ||||||||
| 4097 | return static_cast<ExceptionSpecificationType>( | ||||||||
| 4098 | FunctionTypeBits.ExceptionSpecType); | ||||||||
| 4099 | } | ||||||||
| 4100 | |||||||||
| 4101 | /// Return whether this function has any kind of exception spec. | ||||||||
| 4102 | bool hasExceptionSpec() const { return getExceptionSpecType() != EST_None; } | ||||||||
| 4103 | |||||||||
| 4104 | /// Return whether this function has a dynamic (throw) exception spec. | ||||||||
| 4105 | bool hasDynamicExceptionSpec() const { | ||||||||
| 4106 | return isDynamicExceptionSpec(getExceptionSpecType()); | ||||||||
| 4107 | } | ||||||||
| 4108 | |||||||||
| 4109 | /// Return whether this function has a noexcept exception spec. | ||||||||
| 4110 | bool hasNoexceptExceptionSpec() const { | ||||||||
| 4111 | return isNoexceptExceptionSpec(getExceptionSpecType()); | ||||||||
| 4112 | } | ||||||||
| 4113 | |||||||||
| 4114 | /// Return whether this function has a dependent exception spec. | ||||||||
| 4115 | bool hasDependentExceptionSpec() const; | ||||||||
| 4116 | |||||||||
| 4117 | /// Return whether this function has an instantiation-dependent exception | ||||||||
| 4118 | /// spec. | ||||||||
| 4119 | bool hasInstantiationDependentExceptionSpec() const; | ||||||||
| 4120 | |||||||||
| 4121 | /// Return all the available information about this type's exception spec. | ||||||||
| 4122 | ExceptionSpecInfo getExceptionSpecInfo() const { | ||||||||
| 4123 | ExceptionSpecInfo Result; | ||||||||
| 4124 | Result.Type = getExceptionSpecType(); | ||||||||
| 4125 | if (Result.Type == EST_Dynamic) { | ||||||||
| 4126 | Result.Exceptions = exceptions(); | ||||||||
| 4127 | } else if (isComputedNoexcept(Result.Type)) { | ||||||||
| 4128 | Result.NoexceptExpr = getNoexceptExpr(); | ||||||||
| 4129 | } else if (Result.Type == EST_Uninstantiated) { | ||||||||
| 4130 | Result.SourceDecl = getExceptionSpecDecl(); | ||||||||
| 4131 | Result.SourceTemplate = getExceptionSpecTemplate(); | ||||||||
| 4132 | } else if (Result.Type == EST_Unevaluated) { | ||||||||
| 4133 | Result.SourceDecl = getExceptionSpecDecl(); | ||||||||
| 4134 | } | ||||||||
| 4135 | return Result; | ||||||||
| 4136 | } | ||||||||
| 4137 | |||||||||
| 4138 | /// Return the number of types in the exception specification. | ||||||||
| 4139 | unsigned getNumExceptions() const { | ||||||||
| 4140 | return getExceptionSpecType() == EST_Dynamic | ||||||||
| 4141 | ? getTrailingObjects<FunctionTypeExtraBitfields>() | ||||||||
| 4142 | ->NumExceptionType | ||||||||
| 4143 | : 0; | ||||||||
| 4144 | } | ||||||||
| 4145 | |||||||||
| 4146 | /// Return the ith exception type, where 0 <= i < getNumExceptions(). | ||||||||
| 4147 | QualType getExceptionType(unsigned i) const { | ||||||||
| 4148 | assert(i < getNumExceptions() && "Invalid exception number!")((i < getNumExceptions() && "Invalid exception number!" ) ? static_cast<void> (0) : __assert_fail ("i < getNumExceptions() && \"Invalid exception number!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4148, __PRETTY_FUNCTION__)); | ||||||||
| 4149 | return exception_begin()[i]; | ||||||||
| 4150 | } | ||||||||
| 4151 | |||||||||
| 4152 | /// Return the expression inside noexcept(expression), or a null pointer | ||||||||
| 4153 | /// if there is none (because the exception spec is not of this form). | ||||||||
| 4154 | Expr *getNoexceptExpr() const { | ||||||||
| 4155 | if (!isComputedNoexcept(getExceptionSpecType())) | ||||||||
| 4156 | return nullptr; | ||||||||
| 4157 | return *getTrailingObjects<Expr *>(); | ||||||||
| 4158 | } | ||||||||
| 4159 | |||||||||
| 4160 | /// If this function type has an exception specification which hasn't | ||||||||
| 4161 | /// been determined yet (either because it has not been evaluated or because | ||||||||
| 4162 | /// it has not been instantiated), this is the function whose exception | ||||||||
| 4163 | /// specification is represented by this type. | ||||||||
| 4164 | FunctionDecl *getExceptionSpecDecl() const { | ||||||||
| 4165 | if (getExceptionSpecType() != EST_Uninstantiated && | ||||||||
| 4166 | getExceptionSpecType() != EST_Unevaluated) | ||||||||
| 4167 | return nullptr; | ||||||||
| 4168 | return getTrailingObjects<FunctionDecl *>()[0]; | ||||||||
| 4169 | } | ||||||||
| 4170 | |||||||||
| 4171 | /// If this function type has an uninstantiated exception | ||||||||
| 4172 | /// specification, this is the function whose exception specification | ||||||||
| 4173 | /// should be instantiated to find the exception specification for | ||||||||
| 4174 | /// this type. | ||||||||
| 4175 | FunctionDecl *getExceptionSpecTemplate() const { | ||||||||
| 4176 | if (getExceptionSpecType() != EST_Uninstantiated) | ||||||||
| 4177 | return nullptr; | ||||||||
| 4178 | return getTrailingObjects<FunctionDecl *>()[1]; | ||||||||
| 4179 | } | ||||||||
| 4180 | |||||||||
| 4181 | /// Determine whether this function type has a non-throwing exception | ||||||||
| 4182 | /// specification. | ||||||||
| 4183 | CanThrowResult canThrow() const; | ||||||||
| 4184 | |||||||||
| 4185 | /// Determine whether this function type has a non-throwing exception | ||||||||
| 4186 | /// specification. If this depends on template arguments, returns | ||||||||
| 4187 | /// \c ResultIfDependent. | ||||||||
| 4188 | bool isNothrow(bool ResultIfDependent = false) const { | ||||||||
| 4189 | return ResultIfDependent ? canThrow() != CT_Can : canThrow() == CT_Cannot; | ||||||||
| 4190 | } | ||||||||
| 4191 | |||||||||
| 4192 | /// Whether this function prototype is variadic. | ||||||||
| 4193 | bool isVariadic() const { return FunctionTypeBits.Variadic; } | ||||||||
| 4194 | |||||||||
| 4195 | SourceLocation getEllipsisLoc() const { | ||||||||
| 4196 | return isVariadic() ? *getTrailingObjects<SourceLocation>() | ||||||||
| 4197 | : SourceLocation(); | ||||||||
| 4198 | } | ||||||||
| 4199 | |||||||||
| 4200 | /// Determines whether this function prototype contains a | ||||||||
| 4201 | /// parameter pack at the end. | ||||||||
| 4202 | /// | ||||||||
| 4203 | /// A function template whose last parameter is a parameter pack can be | ||||||||
| 4204 | /// called with an arbitrary number of arguments, much like a variadic | ||||||||
| 4205 | /// function. | ||||||||
| 4206 | bool isTemplateVariadic() const; | ||||||||
| 4207 | |||||||||
| 4208 | /// Whether this function prototype has a trailing return type. | ||||||||
| 4209 | bool hasTrailingReturn() const { return FunctionTypeBits.HasTrailingReturn; } | ||||||||
| 4210 | |||||||||
| 4211 | Qualifiers getMethodQuals() const { | ||||||||
| 4212 | if (hasExtQualifiers()) | ||||||||
| 4213 | return *getTrailingObjects<Qualifiers>(); | ||||||||
| 4214 | else | ||||||||
| 4215 | return getFastTypeQuals(); | ||||||||
| 4216 | } | ||||||||
| 4217 | |||||||||
| 4218 | /// Retrieve the ref-qualifier associated with this function type. | ||||||||
| 4219 | RefQualifierKind getRefQualifier() const { | ||||||||
| 4220 | return static_cast<RefQualifierKind>(FunctionTypeBits.RefQualifier); | ||||||||
| 4221 | } | ||||||||
| 4222 | |||||||||
| 4223 | using param_type_iterator = const QualType *; | ||||||||
| 4224 | using param_type_range = llvm::iterator_range<param_type_iterator>; | ||||||||
| 4225 | |||||||||
| 4226 | param_type_range param_types() const { | ||||||||
| 4227 | return param_type_range(param_type_begin(), param_type_end()); | ||||||||
| 4228 | } | ||||||||
| 4229 | |||||||||
| 4230 | param_type_iterator param_type_begin() const { | ||||||||
| 4231 | return getTrailingObjects<QualType>(); | ||||||||
| 4232 | } | ||||||||
| 4233 | |||||||||
| 4234 | param_type_iterator param_type_end() const { | ||||||||
| 4235 | return param_type_begin() + getNumParams(); | ||||||||
| 4236 | } | ||||||||
| 4237 | |||||||||
| 4238 | using exception_iterator = const QualType *; | ||||||||
| 4239 | |||||||||
| 4240 | ArrayRef<QualType> exceptions() const { | ||||||||
| 4241 | return llvm::makeArrayRef(exception_begin(), exception_end()); | ||||||||
| 4242 | } | ||||||||
| 4243 | |||||||||
| 4244 | exception_iterator exception_begin() const { | ||||||||
| 4245 | return reinterpret_cast<exception_iterator>( | ||||||||
| 4246 | getTrailingObjects<ExceptionType>()); | ||||||||
| 4247 | } | ||||||||
| 4248 | |||||||||
| 4249 | exception_iterator exception_end() const { | ||||||||
| 4250 | return exception_begin() + getNumExceptions(); | ||||||||
| 4251 | } | ||||||||
| 4252 | |||||||||
| 4253 | /// Is there any interesting extra information for any of the parameters | ||||||||
| 4254 | /// of this function type? | ||||||||
| 4255 | bool hasExtParameterInfos() const { | ||||||||
| 4256 | return FunctionTypeBits.HasExtParameterInfos; | ||||||||
| 4257 | } | ||||||||
| 4258 | |||||||||
| 4259 | ArrayRef<ExtParameterInfo> getExtParameterInfos() const { | ||||||||
| 4260 | assert(hasExtParameterInfos())((hasExtParameterInfos()) ? static_cast<void> (0) : __assert_fail ("hasExtParameterInfos()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4260, __PRETTY_FUNCTION__)); | ||||||||
| 4261 | return ArrayRef<ExtParameterInfo>(getTrailingObjects<ExtParameterInfo>(), | ||||||||
| 4262 | getNumParams()); | ||||||||
| 4263 | } | ||||||||
| 4264 | |||||||||
| 4265 | /// Return a pointer to the beginning of the array of extra parameter | ||||||||
| 4266 | /// information, if present, or else null if none of the parameters | ||||||||
| 4267 | /// carry it. This is equivalent to getExtProtoInfo().ExtParameterInfos. | ||||||||
| 4268 | const ExtParameterInfo *getExtParameterInfosOrNull() const { | ||||||||
| 4269 | if (!hasExtParameterInfos()) | ||||||||
| 4270 | return nullptr; | ||||||||
| 4271 | return getTrailingObjects<ExtParameterInfo>(); | ||||||||
| 4272 | } | ||||||||
| 4273 | |||||||||
| 4274 | ExtParameterInfo getExtParameterInfo(unsigned I) const { | ||||||||
| 4275 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4275, __PRETTY_FUNCTION__)); | ||||||||
| 4276 | if (hasExtParameterInfos()) | ||||||||
| 4277 | return getTrailingObjects<ExtParameterInfo>()[I]; | ||||||||
| 4278 | return ExtParameterInfo(); | ||||||||
| 4279 | } | ||||||||
| 4280 | |||||||||
| 4281 | ParameterABI getParameterABI(unsigned I) const { | ||||||||
| 4282 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4282, __PRETTY_FUNCTION__)); | ||||||||
| 4283 | if (hasExtParameterInfos()) | ||||||||
| 4284 | return getTrailingObjects<ExtParameterInfo>()[I].getABI(); | ||||||||
| 4285 | return ParameterABI::Ordinary; | ||||||||
| 4286 | } | ||||||||
| 4287 | |||||||||
| 4288 | bool isParamConsumed(unsigned I) const { | ||||||||
| 4289 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4289, __PRETTY_FUNCTION__)); | ||||||||
| 4290 | if (hasExtParameterInfos()) | ||||||||
| 4291 | return getTrailingObjects<ExtParameterInfo>()[I].isConsumed(); | ||||||||
| 4292 | return false; | ||||||||
| 4293 | } | ||||||||
| 4294 | |||||||||
| 4295 | bool isSugared() const { return false; } | ||||||||
| 4296 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 4297 | |||||||||
| 4298 | void printExceptionSpecification(raw_ostream &OS, | ||||||||
| 4299 | const PrintingPolicy &Policy) const; | ||||||||
| 4300 | |||||||||
| 4301 | static bool classof(const Type *T) { | ||||||||
| 4302 | return T->getTypeClass() == FunctionProto; | ||||||||
| 4303 | } | ||||||||
| 4304 | |||||||||
| 4305 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx); | ||||||||
| 4306 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, | ||||||||
| 4307 | param_type_iterator ArgTys, unsigned NumArgs, | ||||||||
| 4308 | const ExtProtoInfo &EPI, const ASTContext &Context, | ||||||||
| 4309 | bool Canonical); | ||||||||
| 4310 | }; | ||||||||
| 4311 | |||||||||
| 4312 | /// Represents the dependent type named by a dependently-scoped | ||||||||
| 4313 | /// typename using declaration, e.g. | ||||||||
| 4314 | /// using typename Base<T>::foo; | ||||||||
| 4315 | /// | ||||||||
| 4316 | /// Template instantiation turns these into the underlying type. | ||||||||
| 4317 | class UnresolvedUsingType : public Type { | ||||||||
| 4318 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4319 | |||||||||
| 4320 | UnresolvedUsingTypenameDecl *Decl; | ||||||||
| 4321 | |||||||||
| 4322 | UnresolvedUsingType(const UnresolvedUsingTypenameDecl *D) | ||||||||
| 4323 | : Type(UnresolvedUsing, QualType(), | ||||||||
| 4324 | TypeDependence::DependentInstantiation), | ||||||||
| 4325 | Decl(const_cast<UnresolvedUsingTypenameDecl *>(D)) {} | ||||||||
| 4326 | |||||||||
| 4327 | public: | ||||||||
| 4328 | UnresolvedUsingTypenameDecl *getDecl() const { return Decl; } | ||||||||
| 4329 | |||||||||
| 4330 | bool isSugared() const { return false; } | ||||||||
| 4331 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 4332 | |||||||||
| 4333 | static bool classof(const Type *T) { | ||||||||
| 4334 | return T->getTypeClass() == UnresolvedUsing; | ||||||||
| 4335 | } | ||||||||
| 4336 | |||||||||
| 4337 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4338 | return Profile(ID, Decl); | ||||||||
| 4339 | } | ||||||||
| 4340 | |||||||||
| 4341 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 4342 | UnresolvedUsingTypenameDecl *D) { | ||||||||
| 4343 | ID.AddPointer(D); | ||||||||
| 4344 | } | ||||||||
| 4345 | }; | ||||||||
| 4346 | |||||||||
| 4347 | class TypedefType : public Type { | ||||||||
| 4348 | TypedefNameDecl *Decl; | ||||||||
| 4349 | |||||||||
| 4350 | protected: | ||||||||
| 4351 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4352 | |||||||||
| 4353 | TypedefType(TypeClass tc, const TypedefNameDecl *D, QualType can); | ||||||||
| 4354 | |||||||||
| 4355 | public: | ||||||||
| 4356 | TypedefNameDecl *getDecl() const { return Decl; } | ||||||||
| 4357 | |||||||||
| 4358 | bool isSugared() const { return true; } | ||||||||
| 4359 | QualType desugar() const; | ||||||||
| 4360 | |||||||||
| 4361 | static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } | ||||||||
| 4362 | }; | ||||||||
| 4363 | |||||||||
| 4364 | /// Sugar type that represents a type that was qualified by a qualifier written | ||||||||
| 4365 | /// as a macro invocation. | ||||||||
| 4366 | class MacroQualifiedType : public Type { | ||||||||
| 4367 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4368 | |||||||||
| 4369 | QualType UnderlyingTy; | ||||||||
| 4370 | const IdentifierInfo *MacroII; | ||||||||
| 4371 | |||||||||
| 4372 | MacroQualifiedType(QualType UnderlyingTy, QualType CanonTy, | ||||||||
| 4373 | const IdentifierInfo *MacroII) | ||||||||
| 4374 | : Type(MacroQualified, CanonTy, UnderlyingTy->getDependence()), | ||||||||
| 4375 | UnderlyingTy(UnderlyingTy), MacroII(MacroII) { | ||||||||
| 4376 | assert(isa<AttributedType>(UnderlyingTy) &&((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types." ) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4377, __PRETTY_FUNCTION__)) | ||||||||
| 4377 | "Expected a macro qualified type to only wrap attributed types.")((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types." ) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4377, __PRETTY_FUNCTION__)); | ||||||||
| 4378 | } | ||||||||
| 4379 | |||||||||
| 4380 | public: | ||||||||
| 4381 | const IdentifierInfo *getMacroIdentifier() const { return MacroII; } | ||||||||
| 4382 | QualType getUnderlyingType() const { return UnderlyingTy; } | ||||||||
| 4383 | |||||||||
| 4384 | /// Return this attributed type's modified type with no qualifiers attached to | ||||||||
| 4385 | /// it. | ||||||||
| 4386 | QualType getModifiedType() const; | ||||||||
| 4387 | |||||||||
| 4388 | bool isSugared() const { return true; } | ||||||||
| 4389 | QualType desugar() const; | ||||||||
| 4390 | |||||||||
| 4391 | static bool classof(const Type *T) { | ||||||||
| 4392 | return T->getTypeClass() == MacroQualified; | ||||||||
| 4393 | } | ||||||||
| 4394 | }; | ||||||||
| 4395 | |||||||||
| 4396 | /// Represents a `typeof` (or __typeof__) expression (a GCC extension). | ||||||||
| 4397 | class TypeOfExprType : public Type { | ||||||||
| 4398 | Expr *TOExpr; | ||||||||
| 4399 | |||||||||
| 4400 | protected: | ||||||||
| 4401 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4402 | |||||||||
| 4403 | TypeOfExprType(Expr *E, QualType can = QualType()); | ||||||||
| 4404 | |||||||||
| 4405 | public: | ||||||||
| 4406 | Expr *getUnderlyingExpr() const { return TOExpr; } | ||||||||
| 4407 | |||||||||
| 4408 | /// Remove a single level of sugar. | ||||||||
| 4409 | QualType desugar() const; | ||||||||
| 4410 | |||||||||
| 4411 | /// Returns whether this type directly provides sugar. | ||||||||
| 4412 | bool isSugared() const; | ||||||||
| 4413 | |||||||||
| 4414 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } | ||||||||
| 4415 | }; | ||||||||
| 4416 | |||||||||
| 4417 | /// Internal representation of canonical, dependent | ||||||||
| 4418 | /// `typeof(expr)` types. | ||||||||
| 4419 | /// | ||||||||
| 4420 | /// This class is used internally by the ASTContext to manage | ||||||||
| 4421 | /// canonical, dependent types, only. Clients will only see instances | ||||||||
| 4422 | /// of this class via TypeOfExprType nodes. | ||||||||
| 4423 | class DependentTypeOfExprType | ||||||||
| 4424 | : public TypeOfExprType, public llvm::FoldingSetNode { | ||||||||
| 4425 | const ASTContext &Context; | ||||||||
| 4426 | |||||||||
| 4427 | public: | ||||||||
| 4428 | DependentTypeOfExprType(const ASTContext &Context, Expr *E) | ||||||||
| 4429 | : TypeOfExprType(E), Context(Context) {} | ||||||||
| 4430 | |||||||||
| 4431 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4432 | Profile(ID, Context, getUnderlyingExpr()); | ||||||||
| 4433 | } | ||||||||
| 4434 | |||||||||
| 4435 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 4436 | Expr *E); | ||||||||
| 4437 | }; | ||||||||
| 4438 | |||||||||
| 4439 | /// Represents `typeof(type)`, a GCC extension. | ||||||||
| 4440 | class TypeOfType : public Type { | ||||||||
| 4441 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4442 | |||||||||
| 4443 | QualType TOType; | ||||||||
| 4444 | |||||||||
| 4445 | TypeOfType(QualType T, QualType can) | ||||||||
| 4446 | : Type(TypeOf, can, T->getDependence()), TOType(T) { | ||||||||
| 4447 | assert(!isa<TypedefType>(can) && "Invalid canonical type")((!isa<TypedefType>(can) && "Invalid canonical type" ) ? static_cast<void> (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4447, __PRETTY_FUNCTION__)); | ||||||||
| 4448 | } | ||||||||
| 4449 | |||||||||
| 4450 | public: | ||||||||
| 4451 | QualType getUnderlyingType() const { return TOType; } | ||||||||
| 4452 | |||||||||
| 4453 | /// Remove a single level of sugar. | ||||||||
| 4454 | QualType desugar() const { return getUnderlyingType(); } | ||||||||
| 4455 | |||||||||
| 4456 | /// Returns whether this type directly provides sugar. | ||||||||
| 4457 | bool isSugared() const { return true; } | ||||||||
| 4458 | |||||||||
| 4459 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } | ||||||||
| 4460 | }; | ||||||||
| 4461 | |||||||||
| 4462 | /// Represents the type `decltype(expr)` (C++11). | ||||||||
| 4463 | class DecltypeType : public Type { | ||||||||
| 4464 | Expr *E; | ||||||||
| 4465 | QualType UnderlyingType; | ||||||||
| 4466 | |||||||||
| 4467 | protected: | ||||||||
| 4468 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4469 | |||||||||
| 4470 | DecltypeType(Expr *E, QualType underlyingType, QualType can = QualType()); | ||||||||
| 4471 | |||||||||
| 4472 | public: | ||||||||
| 4473 | Expr *getUnderlyingExpr() const { return E; } | ||||||||
| 4474 | QualType getUnderlyingType() const { return UnderlyingType; } | ||||||||
| 4475 | |||||||||
| 4476 | /// Remove a single level of sugar. | ||||||||
| 4477 | QualType desugar() const; | ||||||||
| 4478 | |||||||||
| 4479 | /// Returns whether this type directly provides sugar. | ||||||||
| 4480 | bool isSugared() const; | ||||||||
| 4481 | |||||||||
| 4482 | static bool classof(const Type *T) { return T->getTypeClass() == Decltype; } | ||||||||
| 4483 | }; | ||||||||
| 4484 | |||||||||
| 4485 | /// Internal representation of canonical, dependent | ||||||||
| 4486 | /// decltype(expr) types. | ||||||||
| 4487 | /// | ||||||||
| 4488 | /// This class is used internally by the ASTContext to manage | ||||||||
| 4489 | /// canonical, dependent types, only. Clients will only see instances | ||||||||
| 4490 | /// of this class via DecltypeType nodes. | ||||||||
| 4491 | class DependentDecltypeType : public DecltypeType, public llvm::FoldingSetNode { | ||||||||
| 4492 | const ASTContext &Context; | ||||||||
| 4493 | |||||||||
| 4494 | public: | ||||||||
| 4495 | DependentDecltypeType(const ASTContext &Context, Expr *E); | ||||||||
| 4496 | |||||||||
| 4497 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4498 | Profile(ID, Context, getUnderlyingExpr()); | ||||||||
| 4499 | } | ||||||||
| 4500 | |||||||||
| 4501 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 4502 | Expr *E); | ||||||||
| 4503 | }; | ||||||||
| 4504 | |||||||||
| 4505 | /// A unary type transform, which is a type constructed from another. | ||||||||
| 4506 | class UnaryTransformType : public Type { | ||||||||
| 4507 | public: | ||||||||
| 4508 | enum UTTKind { | ||||||||
| 4509 | EnumUnderlyingType | ||||||||
| 4510 | }; | ||||||||
| 4511 | |||||||||
| 4512 | private: | ||||||||
| 4513 | /// The untransformed type. | ||||||||
| 4514 | QualType BaseType; | ||||||||
| 4515 | |||||||||
| 4516 | /// The transformed type if not dependent, otherwise the same as BaseType. | ||||||||
| 4517 | QualType UnderlyingType; | ||||||||
| 4518 | |||||||||
| 4519 | UTTKind UKind; | ||||||||
| 4520 | |||||||||
| 4521 | protected: | ||||||||
| 4522 | friend class ASTContext; | ||||||||
| 4523 | |||||||||
| 4524 | UnaryTransformType(QualType BaseTy, QualType UnderlyingTy, UTTKind UKind, | ||||||||
| 4525 | QualType CanonicalTy); | ||||||||
| 4526 | |||||||||
| 4527 | public: | ||||||||
| 4528 | bool isSugared() const { return !isDependentType(); } | ||||||||
| 4529 | QualType desugar() const { return UnderlyingType; } | ||||||||
| 4530 | |||||||||
| 4531 | QualType getUnderlyingType() const { return UnderlyingType; } | ||||||||
| 4532 | QualType getBaseType() const { return BaseType; } | ||||||||
| 4533 | |||||||||
| 4534 | UTTKind getUTTKind() const { return UKind; } | ||||||||
| 4535 | |||||||||
| 4536 | static bool classof(const Type *T) { | ||||||||
| 4537 | return T->getTypeClass() == UnaryTransform; | ||||||||
| 4538 | } | ||||||||
| 4539 | }; | ||||||||
| 4540 | |||||||||
| 4541 | /// Internal representation of canonical, dependent | ||||||||
| 4542 | /// __underlying_type(type) types. | ||||||||
| 4543 | /// | ||||||||
| 4544 | /// This class is used internally by the ASTContext to manage | ||||||||
| 4545 | /// canonical, dependent types, only. Clients will only see instances | ||||||||
| 4546 | /// of this class via UnaryTransformType nodes. | ||||||||
| 4547 | class DependentUnaryTransformType : public UnaryTransformType, | ||||||||
| 4548 | public llvm::FoldingSetNode { | ||||||||
| 4549 | public: | ||||||||
| 4550 | DependentUnaryTransformType(const ASTContext &C, QualType BaseType, | ||||||||
| 4551 | UTTKind UKind); | ||||||||
| 4552 | |||||||||
| 4553 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4554 | Profile(ID, getBaseType(), getUTTKind()); | ||||||||
| 4555 | } | ||||||||
| 4556 | |||||||||
| 4557 | static void Profile(llvm::FoldingSetNodeID &ID, QualType BaseType, | ||||||||
| 4558 | UTTKind UKind) { | ||||||||
| 4559 | ID.AddPointer(BaseType.getAsOpaquePtr()); | ||||||||
| 4560 | ID.AddInteger((unsigned)UKind); | ||||||||
| 4561 | } | ||||||||
| 4562 | }; | ||||||||
| 4563 | |||||||||
| 4564 | class TagType : public Type { | ||||||||
| 4565 | friend class ASTReader; | ||||||||
| 4566 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
| 4567 | |||||||||
| 4568 | /// Stores the TagDecl associated with this type. The decl may point to any | ||||||||
| 4569 | /// TagDecl that declares the entity. | ||||||||
| 4570 | TagDecl *decl; | ||||||||
| 4571 | |||||||||
| 4572 | protected: | ||||||||
| 4573 | TagType(TypeClass TC, const TagDecl *D, QualType can); | ||||||||
| 4574 | |||||||||
| 4575 | public: | ||||||||
| 4576 | TagDecl *getDecl() const; | ||||||||
| 4577 | |||||||||
| 4578 | /// Determines whether this type is in the process of being defined. | ||||||||
| 4579 | bool isBeingDefined() const; | ||||||||
| 4580 | |||||||||
| 4581 | static bool classof(const Type *T) { | ||||||||
| 4582 | return T->getTypeClass() == Enum || T->getTypeClass() == Record; | ||||||||
| 4583 | } | ||||||||
| 4584 | }; | ||||||||
| 4585 | |||||||||
| 4586 | /// A helper class that allows the use of isa/cast/dyncast | ||||||||
| 4587 | /// to detect TagType objects of structs/unions/classes. | ||||||||
| 4588 | class RecordType : public TagType { | ||||||||
| 4589 | protected: | ||||||||
| 4590 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4591 | |||||||||
| 4592 | explicit RecordType(const RecordDecl *D) | ||||||||
| 4593 | : TagType(Record, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||
| 4594 | explicit RecordType(TypeClass TC, RecordDecl *D) | ||||||||
| 4595 | : TagType(TC, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||
| 4596 | |||||||||
| 4597 | public: | ||||||||
| 4598 | RecordDecl *getDecl() const { | ||||||||
| 4599 | return reinterpret_cast<RecordDecl*>(TagType::getDecl()); | ||||||||
| 4600 | } | ||||||||
| 4601 | |||||||||
| 4602 | /// Recursively check all fields in the record for const-ness. If any field | ||||||||
| 4603 | /// is declared const, return true. Otherwise, return false. | ||||||||
| 4604 | bool hasConstFields() const; | ||||||||
| 4605 | |||||||||
| 4606 | bool isSugared() const { return false; } | ||||||||
| 4607 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 4608 | |||||||||
| 4609 | static bool classof(const Type *T) { return T->getTypeClass() == Record; } | ||||||||
| 4610 | }; | ||||||||
| 4611 | |||||||||
| 4612 | /// A helper class that allows the use of isa/cast/dyncast | ||||||||
| 4613 | /// to detect TagType objects of enums. | ||||||||
| 4614 | class EnumType : public TagType { | ||||||||
| 4615 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 4616 | |||||||||
| 4617 | explicit EnumType(const EnumDecl *D) | ||||||||
| 4618 | : TagType(Enum, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||
| 4619 | |||||||||
| 4620 | public: | ||||||||
| 4621 | EnumDecl *getDecl() const { | ||||||||
| 4622 | return reinterpret_cast<EnumDecl*>(TagType::getDecl()); | ||||||||
| 4623 | } | ||||||||
| 4624 | |||||||||
| 4625 | bool isSugared() const { return false; } | ||||||||
| 4626 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 4627 | |||||||||
| 4628 | static bool classof(const Type *T) { return T->getTypeClass() == Enum; } | ||||||||
| 4629 | }; | ||||||||
| 4630 | |||||||||
| 4631 | /// An attributed type is a type to which a type attribute has been applied. | ||||||||
| 4632 | /// | ||||||||
| 4633 | /// The "modified type" is the fully-sugared type to which the attributed | ||||||||
| 4634 | /// type was applied; generally it is not canonically equivalent to the | ||||||||
| 4635 | /// attributed type. The "equivalent type" is the minimally-desugared type | ||||||||
| 4636 | /// which the type is canonically equivalent to. | ||||||||
| 4637 | /// | ||||||||
| 4638 | /// For example, in the following attributed type: | ||||||||
| 4639 | /// int32_t __attribute__((vector_size(16))) | ||||||||
| 4640 | /// - the modified type is the TypedefType for int32_t | ||||||||
| 4641 | /// - the equivalent type is VectorType(16, int32_t) | ||||||||
| 4642 | /// - the canonical type is VectorType(16, int) | ||||||||
| 4643 | class AttributedType : public Type, public llvm::FoldingSetNode { | ||||||||
| 4644 | public: | ||||||||
| 4645 | using Kind = attr::Kind; | ||||||||
| 4646 | |||||||||
| 4647 | private: | ||||||||
| 4648 | friend class ASTContext; // ASTContext creates these | ||||||||
| 4649 | |||||||||
| 4650 | QualType ModifiedType; | ||||||||
| 4651 | QualType EquivalentType; | ||||||||
| 4652 | |||||||||
| 4653 | AttributedType(QualType canon, attr::Kind attrKind, QualType modified, | ||||||||
| 4654 | QualType equivalent) | ||||||||
| 4655 | : Type(Attributed, canon, equivalent->getDependence()), | ||||||||
| 4656 | ModifiedType(modified), EquivalentType(equivalent) { | ||||||||
| 4657 | AttributedTypeBits.AttrKind = attrKind; | ||||||||
| 4658 | } | ||||||||
| 4659 | |||||||||
| 4660 | public: | ||||||||
| 4661 | Kind getAttrKind() const { | ||||||||
| 4662 | return static_cast<Kind>(AttributedTypeBits.AttrKind); | ||||||||
| 4663 | } | ||||||||
| 4664 | |||||||||
| 4665 | QualType getModifiedType() const { return ModifiedType; } | ||||||||
| 4666 | QualType getEquivalentType() const { return EquivalentType; } | ||||||||
| 4667 | |||||||||
| 4668 | bool isSugared() const { return true; } | ||||||||
| 4669 | QualType desugar() const { return getEquivalentType(); } | ||||||||
| 4670 | |||||||||
| 4671 | /// Does this attribute behave like a type qualifier? | ||||||||
| 4672 | /// | ||||||||
| 4673 | /// A type qualifier adjusts a type to provide specialized rules for | ||||||||
| 4674 | /// a specific object, like the standard const and volatile qualifiers. | ||||||||
| 4675 | /// This includes attributes controlling things like nullability, | ||||||||
| 4676 | /// address spaces, and ARC ownership. The value of the object is still | ||||||||
| 4677 | /// largely described by the modified type. | ||||||||
| 4678 | /// | ||||||||
| 4679 | /// In contrast, many type attributes "rewrite" their modified type to | ||||||||
| 4680 | /// produce a fundamentally different type, not necessarily related in any | ||||||||
| 4681 | /// formalizable way to the original type. For example, calling convention | ||||||||
| 4682 | /// and vector attributes are not simple type qualifiers. | ||||||||
| 4683 | /// | ||||||||
| 4684 | /// Type qualifiers are often, but not always, reflected in the canonical | ||||||||
| 4685 | /// type. | ||||||||
| 4686 | bool isQualifier() const; | ||||||||
| 4687 | |||||||||
| 4688 | bool isMSTypeSpec() const; | ||||||||
| 4689 | |||||||||
| 4690 | bool isCallingConv() const; | ||||||||
| 4691 | |||||||||
| 4692 | llvm::Optional<NullabilityKind> getImmediateNullability() const; | ||||||||
| 4693 | |||||||||
| 4694 | /// Retrieve the attribute kind corresponding to the given | ||||||||
| 4695 | /// nullability kind. | ||||||||
| 4696 | static Kind getNullabilityAttrKind(NullabilityKind kind) { | ||||||||
| 4697 | switch (kind) { | ||||||||
| 4698 | case NullabilityKind::NonNull: | ||||||||
| 4699 | return attr::TypeNonNull; | ||||||||
| 4700 | |||||||||
| 4701 | case NullabilityKind::Nullable: | ||||||||
| 4702 | return attr::TypeNullable; | ||||||||
| 4703 | |||||||||
| 4704 | case NullabilityKind::Unspecified: | ||||||||
| 4705 | return attr::TypeNullUnspecified; | ||||||||
| 4706 | } | ||||||||
| 4707 | llvm_unreachable("Unknown nullability kind.")::llvm::llvm_unreachable_internal("Unknown nullability kind." , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 4707); | ||||||||
| 4708 | } | ||||||||
| 4709 | |||||||||
| 4710 | /// Strip off the top-level nullability annotation on the given | ||||||||
| 4711 | /// type, if it's there. | ||||||||
| 4712 | /// | ||||||||
| 4713 | /// \param T The type to strip. If the type is exactly an | ||||||||
| 4714 | /// AttributedType specifying nullability (without looking through | ||||||||
| 4715 | /// type sugar), the nullability is returned and this type changed | ||||||||
| 4716 | /// to the underlying modified type. | ||||||||
| 4717 | /// | ||||||||
| 4718 | /// \returns the top-level nullability, if present. | ||||||||
| 4719 | static Optional<NullabilityKind> stripOuterNullability(QualType &T); | ||||||||
| 4720 | |||||||||
| 4721 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4722 | Profile(ID, getAttrKind(), ModifiedType, EquivalentType); | ||||||||
| 4723 | } | ||||||||
| 4724 | |||||||||
| 4725 | static void Profile(llvm::FoldingSetNodeID &ID, Kind attrKind, | ||||||||
| 4726 | QualType modified, QualType equivalent) { | ||||||||
| 4727 | ID.AddInteger(attrKind); | ||||||||
| 4728 | ID.AddPointer(modified.getAsOpaquePtr()); | ||||||||
| 4729 | ID.AddPointer(equivalent.getAsOpaquePtr()); | ||||||||
| 4730 | } | ||||||||
| 4731 | |||||||||
| 4732 | static bool classof(const Type *T) { | ||||||||
| 4733 | return T->getTypeClass() == Attributed; | ||||||||
| 4734 | } | ||||||||
| 4735 | }; | ||||||||
| 4736 | |||||||||
| 4737 | class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { | ||||||||
| 4738 | friend class ASTContext; // ASTContext creates these | ||||||||
| 4739 | |||||||||
| 4740 | // Helper data collector for canonical types. | ||||||||
| 4741 | struct CanonicalTTPTInfo { | ||||||||
| 4742 | unsigned Depth : 15; | ||||||||
| 4743 | unsigned ParameterPack : 1; | ||||||||
| 4744 | unsigned Index : 16; | ||||||||
| 4745 | }; | ||||||||
| 4746 | |||||||||
| 4747 | union { | ||||||||
| 4748 | // Info for the canonical type. | ||||||||
| 4749 | CanonicalTTPTInfo CanTTPTInfo; | ||||||||
| 4750 | |||||||||
| 4751 | // Info for the non-canonical type. | ||||||||
| 4752 | TemplateTypeParmDecl *TTPDecl; | ||||||||
| 4753 | }; | ||||||||
| 4754 | |||||||||
| 4755 | /// Build a non-canonical type. | ||||||||
| 4756 | TemplateTypeParmType(TemplateTypeParmDecl *TTPDecl, QualType Canon) | ||||||||
| 4757 | : Type(TemplateTypeParm, Canon, | ||||||||
| 4758 | TypeDependence::DependentInstantiation | | ||||||||
| 4759 | (Canon->getDependence() & TypeDependence::UnexpandedPack)), | ||||||||
| 4760 | TTPDecl(TTPDecl) {} | ||||||||
| 4761 | |||||||||
| 4762 | /// Build the canonical type. | ||||||||
| 4763 | TemplateTypeParmType(unsigned D, unsigned I, bool PP) | ||||||||
| 4764 | : Type(TemplateTypeParm, QualType(this, 0), | ||||||||
| 4765 | TypeDependence::DependentInstantiation | | ||||||||
| 4766 | (PP ? TypeDependence::UnexpandedPack : TypeDependence::None)) { | ||||||||
| 4767 | CanTTPTInfo.Depth = D; | ||||||||
| 4768 | CanTTPTInfo.Index = I; | ||||||||
| 4769 | CanTTPTInfo.ParameterPack = PP; | ||||||||
| 4770 | } | ||||||||
| 4771 | |||||||||
| 4772 | const CanonicalTTPTInfo& getCanTTPTInfo() const { | ||||||||
| 4773 | QualType Can = getCanonicalTypeInternal(); | ||||||||
| 4774 | return Can->castAs<TemplateTypeParmType>()->CanTTPTInfo; | ||||||||
| 4775 | } | ||||||||
| 4776 | |||||||||
| 4777 | public: | ||||||||
| 4778 | unsigned getDepth() const { return getCanTTPTInfo().Depth; } | ||||||||
| 4779 | unsigned getIndex() const { return getCanTTPTInfo().Index; } | ||||||||
| 4780 | bool isParameterPack() const { return getCanTTPTInfo().ParameterPack; } | ||||||||
| 4781 | |||||||||
| 4782 | TemplateTypeParmDecl *getDecl() const { | ||||||||
| 4783 | return isCanonicalUnqualified() ? nullptr : TTPDecl; | ||||||||
| 4784 | } | ||||||||
| 4785 | |||||||||
| 4786 | IdentifierInfo *getIdentifier() const; | ||||||||
| 4787 | |||||||||
| 4788 | bool isSugared() const { return false; } | ||||||||
| 4789 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 4790 | |||||||||
| 4791 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4792 | Profile(ID, getDepth(), getIndex(), isParameterPack(), getDecl()); | ||||||||
| 4793 | } | ||||||||
| 4794 | |||||||||
| 4795 | static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, | ||||||||
| 4796 | unsigned Index, bool ParameterPack, | ||||||||
| 4797 | TemplateTypeParmDecl *TTPDecl) { | ||||||||
| 4798 | ID.AddInteger(Depth); | ||||||||
| 4799 | ID.AddInteger(Index); | ||||||||
| 4800 | ID.AddBoolean(ParameterPack); | ||||||||
| 4801 | ID.AddPointer(TTPDecl); | ||||||||
| 4802 | } | ||||||||
| 4803 | |||||||||
| 4804 | static bool classof(const Type *T) { | ||||||||
| 4805 | return T->getTypeClass() == TemplateTypeParm; | ||||||||
| 4806 | } | ||||||||
| 4807 | }; | ||||||||
| 4808 | |||||||||
| 4809 | /// Represents the result of substituting a type for a template | ||||||||
| 4810 | /// type parameter. | ||||||||
| 4811 | /// | ||||||||
| 4812 | /// Within an instantiated template, all template type parameters have | ||||||||
| 4813 | /// been replaced with these. They are used solely to record that a | ||||||||
| 4814 | /// type was originally written as a template type parameter; | ||||||||
| 4815 | /// therefore they are never canonical. | ||||||||
| 4816 | class SubstTemplateTypeParmType : public Type, public llvm::FoldingSetNode { | ||||||||
| 4817 | friend class ASTContext; | ||||||||
| 4818 | |||||||||
| 4819 | // The original type parameter. | ||||||||
| 4820 | const TemplateTypeParmType *Replaced; | ||||||||
| 4821 | |||||||||
| 4822 | SubstTemplateTypeParmType(const TemplateTypeParmType *Param, QualType Canon) | ||||||||
| 4823 | : Type(SubstTemplateTypeParm, Canon, Canon->getDependence()), | ||||||||
| 4824 | Replaced(Param) {} | ||||||||
| 4825 | |||||||||
| 4826 | public: | ||||||||
| 4827 | /// Gets the template parameter that was substituted for. | ||||||||
| 4828 | const TemplateTypeParmType *getReplacedParameter() const { | ||||||||
| 4829 | return Replaced; | ||||||||
| 4830 | } | ||||||||
| 4831 | |||||||||
| 4832 | /// Gets the type that was substituted for the template | ||||||||
| 4833 | /// parameter. | ||||||||
| 4834 | QualType getReplacementType() const { | ||||||||
| 4835 | return getCanonicalTypeInternal(); | ||||||||
| 4836 | } | ||||||||
| 4837 | |||||||||
| 4838 | bool isSugared() const { return true; } | ||||||||
| 4839 | QualType desugar() const { return getReplacementType(); } | ||||||||
| 4840 | |||||||||
| 4841 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 4842 | Profile(ID, getReplacedParameter(), getReplacementType()); | ||||||||
| 4843 | } | ||||||||
| 4844 | |||||||||
| 4845 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 4846 | const TemplateTypeParmType *Replaced, | ||||||||
| 4847 | QualType Replacement) { | ||||||||
| 4848 | ID.AddPointer(Replaced); | ||||||||
| 4849 | ID.AddPointer(Replacement.getAsOpaquePtr()); | ||||||||
| 4850 | } | ||||||||
| 4851 | |||||||||
| 4852 | static bool classof(const Type *T) { | ||||||||
| 4853 | return T->getTypeClass() == SubstTemplateTypeParm; | ||||||||
| 4854 | } | ||||||||
| 4855 | }; | ||||||||
| 4856 | |||||||||
| 4857 | /// Represents the result of substituting a set of types for a template | ||||||||
| 4858 | /// type parameter pack. | ||||||||
| 4859 | /// | ||||||||
| 4860 | /// When a pack expansion in the source code contains multiple parameter packs | ||||||||
| 4861 | /// and those parameter packs correspond to different levels of template | ||||||||
| 4862 | /// parameter lists, this type node is used to represent a template type | ||||||||
| 4863 | /// parameter pack from an outer level, which has already had its argument pack | ||||||||
| 4864 | /// substituted but that still lives within a pack expansion that itself | ||||||||
| 4865 | /// could not be instantiated. When actually performing a substitution into | ||||||||
| 4866 | /// that pack expansion (e.g., when all template parameters have corresponding | ||||||||
| 4867 | /// arguments), this type will be replaced with the \c SubstTemplateTypeParmType | ||||||||
| 4868 | /// at the current pack substitution index. | ||||||||
| 4869 | class SubstTemplateTypeParmPackType : public Type, public llvm::FoldingSetNode { | ||||||||
| 4870 | friend class ASTContext; | ||||||||
| 4871 | |||||||||
| 4872 | /// The original type parameter. | ||||||||
| 4873 | const TemplateTypeParmType *Replaced; | ||||||||
| 4874 | |||||||||
| 4875 | /// A pointer to the set of template arguments that this | ||||||||
| 4876 | /// parameter pack is instantiated with. | ||||||||
| 4877 | const TemplateArgument *Arguments; | ||||||||
| 4878 | |||||||||
| 4879 | SubstTemplateTypeParmPackType(const TemplateTypeParmType *Param, | ||||||||
| 4880 | QualType Canon, | ||||||||
| 4881 | const TemplateArgument &ArgPack); | ||||||||
| 4882 | |||||||||
| 4883 | public: | ||||||||
| 4884 | IdentifierInfo *getIdentifier() const { return Replaced->getIdentifier(); } | ||||||||
| 4885 | |||||||||
| 4886 | /// Gets the template parameter that was substituted for. | ||||||||
| 4887 | const TemplateTypeParmType *getReplacedParameter() const { | ||||||||
| 4888 | return Replaced; | ||||||||
| 4889 | } | ||||||||
| 4890 | |||||||||
| 4891 | unsigned getNumArgs() const { | ||||||||
| 4892 | return SubstTemplateTypeParmPackTypeBits.NumArgs; | ||||||||
| 4893 | } | ||||||||
| 4894 | |||||||||
| 4895 | bool isSugared() const { return false; } | ||||||||
| 4896 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 4897 | |||||||||
| 4898 | TemplateArgument getArgumentPack() const; | ||||||||
| 4899 | |||||||||
| 4900 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||
| 4901 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 4902 | const TemplateTypeParmType *Replaced, | ||||||||
| 4903 | const TemplateArgument &ArgPack); | ||||||||
| 4904 | |||||||||
| 4905 | static bool classof(const Type *T) { | ||||||||
| 4906 | return T->getTypeClass() == SubstTemplateTypeParmPack; | ||||||||
| 4907 | } | ||||||||
| 4908 | }; | ||||||||
| 4909 | |||||||||
| 4910 | /// Common base class for placeholders for types that get replaced by | ||||||||
| 4911 | /// placeholder type deduction: C++11 auto, C++14 decltype(auto), C++17 deduced | ||||||||
| 4912 | /// class template types, and constrained type names. | ||||||||
| 4913 | /// | ||||||||
| 4914 | /// These types are usually a placeholder for a deduced type. However, before | ||||||||
| 4915 | /// the initializer is attached, or (usually) if the initializer is | ||||||||
| 4916 | /// type-dependent, there is no deduced type and the type is canonical. In | ||||||||
| 4917 | /// the latter case, it is also a dependent type. | ||||||||
| 4918 | class DeducedType : public Type { | ||||||||
| 4919 | protected: | ||||||||
| 4920 | DeducedType(TypeClass TC, QualType DeducedAsType, | ||||||||
| 4921 | TypeDependence ExtraDependence) | ||||||||
| 4922 | : Type(TC, | ||||||||
| 4923 | // FIXME: Retain the sugared deduced type? | ||||||||
| 4924 | DeducedAsType.isNull() ? QualType(this, 0) | ||||||||
| 4925 | : DeducedAsType.getCanonicalType(), | ||||||||
| 4926 | ExtraDependence | (DeducedAsType.isNull() | ||||||||
| 4927 | ? TypeDependence::None | ||||||||
| 4928 | : DeducedAsType->getDependence() & | ||||||||
| 4929 | ~TypeDependence::VariablyModified)) {} | ||||||||
| 4930 | |||||||||
| 4931 | public: | ||||||||
| 4932 | bool isSugared() const { return !isCanonicalUnqualified(); } | ||||||||
| 4933 | QualType desugar() const { return getCanonicalTypeInternal(); } | ||||||||
| 4934 | |||||||||
| 4935 | /// Get the type deduced for this placeholder type, or null if it's | ||||||||
| 4936 | /// either not been deduced or was deduced to a dependent type. | ||||||||
| 4937 | QualType getDeducedType() const { | ||||||||
| 4938 | return !isCanonicalUnqualified() ? getCanonicalTypeInternal() : QualType(); | ||||||||
| 4939 | } | ||||||||
| 4940 | bool isDeduced() const { | ||||||||
| 4941 | return !isCanonicalUnqualified() || isDependentType(); | ||||||||
| 4942 | } | ||||||||
| 4943 | |||||||||
| 4944 | static bool classof(const Type *T) { | ||||||||
| 4945 | return T->getTypeClass() == Auto || | ||||||||
| 4946 | T->getTypeClass() == DeducedTemplateSpecialization; | ||||||||
| 4947 | } | ||||||||
| 4948 | }; | ||||||||
| 4949 | |||||||||
| 4950 | /// Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained | ||||||||
| 4951 | /// by a type-constraint. | ||||||||
| 4952 | class alignas(8) AutoType : public DeducedType, public llvm::FoldingSetNode { | ||||||||
| 4953 | friend class ASTContext; // ASTContext creates these | ||||||||
| 4954 | |||||||||
| 4955 | ConceptDecl *TypeConstraintConcept; | ||||||||
| 4956 | |||||||||
| 4957 | AutoType(QualType DeducedAsType, AutoTypeKeyword Keyword, | ||||||||
| 4958 | TypeDependence ExtraDependence, ConceptDecl *CD, | ||||||||
| 4959 | ArrayRef<TemplateArgument> TypeConstraintArgs); | ||||||||
| 4960 | |||||||||
| 4961 | const TemplateArgument *getArgBuffer() const { | ||||||||
| 4962 | return reinterpret_cast<const TemplateArgument*>(this+1); | ||||||||
| 4963 | } | ||||||||
| 4964 | |||||||||
| 4965 | TemplateArgument *getArgBuffer() { | ||||||||
| 4966 | return reinterpret_cast<TemplateArgument*>(this+1); | ||||||||
| 4967 | } | ||||||||
| 4968 | |||||||||
| 4969 | public: | ||||||||
| 4970 | /// Retrieve the template arguments. | ||||||||
| 4971 | const TemplateArgument *getArgs() const { | ||||||||
| 4972 | return getArgBuffer(); | ||||||||
| 4973 | } | ||||||||
| 4974 | |||||||||
| 4975 | /// Retrieve the number of template arguments. | ||||||||
| 4976 | unsigned getNumArgs() const { | ||||||||
| 4977 | return AutoTypeBits.NumArgs; | ||||||||
| 4978 | } | ||||||||
| 4979 | |||||||||
| 4980 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||
| 4981 | |||||||||
| 4982 | ArrayRef<TemplateArgument> getTypeConstraintArguments() const { | ||||||||
| 4983 | return {getArgs(), getNumArgs()}; | ||||||||
| 4984 | } | ||||||||
| 4985 | |||||||||
| 4986 | ConceptDecl *getTypeConstraintConcept() const { | ||||||||
| 4987 | return TypeConstraintConcept; | ||||||||
| 4988 | } | ||||||||
| 4989 | |||||||||
| 4990 | bool isConstrained() const { | ||||||||
| 4991 | return TypeConstraintConcept != nullptr; | ||||||||
| 4992 | } | ||||||||
| 4993 | |||||||||
| 4994 | bool isDecltypeAuto() const { | ||||||||
| 4995 | return getKeyword() == AutoTypeKeyword::DecltypeAuto; | ||||||||
| 4996 | } | ||||||||
| 4997 | |||||||||
| 4998 | AutoTypeKeyword getKeyword() const { | ||||||||
| 4999 | return (AutoTypeKeyword)AutoTypeBits.Keyword; | ||||||||
| 5000 | } | ||||||||
| 5001 | |||||||||
| 5002 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { | ||||||||
| 5003 | Profile(ID, Context, getDeducedType(), getKeyword(), isDependentType(), | ||||||||
| 5004 | getTypeConstraintConcept(), getTypeConstraintArguments()); | ||||||||
| 5005 | } | ||||||||
| 5006 | |||||||||
| 5007 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 5008 | QualType Deduced, AutoTypeKeyword Keyword, | ||||||||
| 5009 | bool IsDependent, ConceptDecl *CD, | ||||||||
| 5010 | ArrayRef<TemplateArgument> Arguments); | ||||||||
| 5011 | |||||||||
| 5012 | static bool classof(const Type *T) { | ||||||||
| 5013 | return T->getTypeClass() == Auto; | ||||||||
| 5014 | } | ||||||||
| 5015 | }; | ||||||||
| 5016 | |||||||||
| 5017 | /// Represents a C++17 deduced template specialization type. | ||||||||
| 5018 | class DeducedTemplateSpecializationType : public DeducedType, | ||||||||
| 5019 | public llvm::FoldingSetNode { | ||||||||
| 5020 | friend class ASTContext; // ASTContext creates these | ||||||||
| 5021 | |||||||||
| 5022 | /// The name of the template whose arguments will be deduced. | ||||||||
| 5023 | TemplateName Template; | ||||||||
| 5024 | |||||||||
| 5025 | DeducedTemplateSpecializationType(TemplateName Template, | ||||||||
| 5026 | QualType DeducedAsType, | ||||||||
| 5027 | bool IsDeducedAsDependent) | ||||||||
| 5028 | : DeducedType(DeducedTemplateSpecialization, DeducedAsType, | ||||||||
| 5029 | toTypeDependence(Template.getDependence()) | | ||||||||
| 5030 | (IsDeducedAsDependent | ||||||||
| 5031 | ? TypeDependence::DependentInstantiation | ||||||||
| 5032 | : TypeDependence::None)), | ||||||||
| 5033 | Template(Template) {} | ||||||||
| 5034 | |||||||||
| 5035 | public: | ||||||||
| 5036 | /// Retrieve the name of the template that we are deducing. | ||||||||
| 5037 | TemplateName getTemplateName() const { return Template;} | ||||||||
| 5038 | |||||||||
| 5039 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 5040 | Profile(ID, getTemplateName(), getDeducedType(), isDependentType()); | ||||||||
| 5041 | } | ||||||||
| 5042 | |||||||||
| 5043 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName Template, | ||||||||
| 5044 | QualType Deduced, bool IsDependent) { | ||||||||
| 5045 | Template.Profile(ID); | ||||||||
| 5046 | ID.AddPointer(Deduced.getAsOpaquePtr()); | ||||||||
| 5047 | ID.AddBoolean(IsDependent); | ||||||||
| 5048 | } | ||||||||
| 5049 | |||||||||
| 5050 | static bool classof(const Type *T) { | ||||||||
| 5051 | return T->getTypeClass() == DeducedTemplateSpecialization; | ||||||||
| 5052 | } | ||||||||
| 5053 | }; | ||||||||
| 5054 | |||||||||
| 5055 | /// Represents a type template specialization; the template | ||||||||
| 5056 | /// must be a class template, a type alias template, or a template | ||||||||
| 5057 | /// template parameter. A template which cannot be resolved to one of | ||||||||
| 5058 | /// these, e.g. because it is written with a dependent scope | ||||||||
| 5059 | /// specifier, is instead represented as a | ||||||||
| 5060 | /// @c DependentTemplateSpecializationType. | ||||||||
| 5061 | /// | ||||||||
| 5062 | /// A non-dependent template specialization type is always "sugar", | ||||||||
| 5063 | /// typically for a \c RecordType. For example, a class template | ||||||||
| 5064 | /// specialization type of \c vector<int> will refer to a tag type for | ||||||||
| 5065 | /// the instantiation \c std::vector<int, std::allocator<int>> | ||||||||
| 5066 | /// | ||||||||
| 5067 | /// Template specializations are dependent if either the template or | ||||||||
| 5068 | /// any of the template arguments are dependent, in which case the | ||||||||
| 5069 | /// type may also be canonical. | ||||||||
| 5070 | /// | ||||||||
| 5071 | /// Instances of this type are allocated with a trailing array of | ||||||||
| 5072 | /// TemplateArguments, followed by a QualType representing the | ||||||||
| 5073 | /// non-canonical aliased type when the template is a type alias | ||||||||
| 5074 | /// template. | ||||||||
| 5075 | class alignas(8) TemplateSpecializationType | ||||||||
| 5076 | : public Type, | ||||||||
| 5077 | public llvm::FoldingSetNode { | ||||||||
| 5078 | friend class ASTContext; // ASTContext creates these | ||||||||
| 5079 | |||||||||
| 5080 | /// The name of the template being specialized. This is | ||||||||
| 5081 | /// either a TemplateName::Template (in which case it is a | ||||||||
| 5082 | /// ClassTemplateDecl*, a TemplateTemplateParmDecl*, or a | ||||||||
| 5083 | /// TypeAliasTemplateDecl*), a | ||||||||
| 5084 | /// TemplateName::SubstTemplateTemplateParmPack, or a | ||||||||
| 5085 | /// TemplateName::SubstTemplateTemplateParm (in which case the | ||||||||
| 5086 | /// replacement must, recursively, be one of these). | ||||||||
| 5087 | TemplateName Template; | ||||||||
| 5088 | |||||||||
| 5089 | TemplateSpecializationType(TemplateName T, | ||||||||
| 5090 | ArrayRef<TemplateArgument> Args, | ||||||||
| 5091 | QualType Canon, | ||||||||
| 5092 | QualType Aliased); | ||||||||
| 5093 | |||||||||
| 5094 | public: | ||||||||
| 5095 | /// Determine whether any of the given template arguments are dependent. | ||||||||
| 5096 | static bool anyDependentTemplateArguments(ArrayRef<TemplateArgumentLoc> Args, | ||||||||
| 5097 | bool &InstantiationDependent); | ||||||||
| 5098 | |||||||||
| 5099 | static bool anyDependentTemplateArguments(const TemplateArgumentListInfo &, | ||||||||
| 5100 | bool &InstantiationDependent); | ||||||||
| 5101 | |||||||||
| 5102 | /// True if this template specialization type matches a current | ||||||||
| 5103 | /// instantiation in the context in which it is found. | ||||||||
| 5104 | bool isCurrentInstantiation() const { | ||||||||
| 5105 | return isa<InjectedClassNameType>(getCanonicalTypeInternal()); | ||||||||
| 5106 | } | ||||||||
| 5107 | |||||||||
| 5108 | /// Determine if this template specialization type is for a type alias | ||||||||
| 5109 | /// template that has been substituted. | ||||||||
| 5110 | /// | ||||||||
| 5111 | /// Nearly every template specialization type whose template is an alias | ||||||||
| 5112 | /// template will be substituted. However, this is not the case when | ||||||||
| 5113 | /// the specialization contains a pack expansion but the template alias | ||||||||
| 5114 | /// does not have a corresponding parameter pack, e.g., | ||||||||
| 5115 | /// | ||||||||
| 5116 | /// \code | ||||||||
| 5117 | /// template<typename T, typename U, typename V> struct S; | ||||||||
| 5118 | /// template<typename T, typename U> using A = S<T, int, U>; | ||||||||
| 5119 | /// template<typename... Ts> struct X { | ||||||||
| 5120 | /// typedef A<Ts...> type; // not a type alias | ||||||||
| 5121 | /// }; | ||||||||
| 5122 | /// \endcode | ||||||||
| 5123 | bool isTypeAlias() const { return TemplateSpecializationTypeBits.TypeAlias; } | ||||||||
| 5124 | |||||||||
| 5125 | /// Get the aliased type, if this is a specialization of a type alias | ||||||||
| 5126 | /// template. | ||||||||
| 5127 | QualType getAliasedType() const { | ||||||||
| 5128 | assert(isTypeAlias() && "not a type alias template specialization")((isTypeAlias() && "not a type alias template specialization" ) ? static_cast<void> (0) : __assert_fail ("isTypeAlias() && \"not a type alias template specialization\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5128, __PRETTY_FUNCTION__)); | ||||||||
| 5129 | return *reinterpret_cast<const QualType*>(end()); | ||||||||
| 5130 | } | ||||||||
| 5131 | |||||||||
| 5132 | using iterator = const TemplateArgument *; | ||||||||
| 5133 | |||||||||
| 5134 | iterator begin() const { return getArgs(); } | ||||||||
| 5135 | iterator end() const; // defined inline in TemplateBase.h | ||||||||
| 5136 | |||||||||
| 5137 | /// Retrieve the name of the template that we are specializing. | ||||||||
| 5138 | TemplateName getTemplateName() const { return Template; } | ||||||||
| 5139 | |||||||||
| 5140 | /// Retrieve the template arguments. | ||||||||
| 5141 | const TemplateArgument *getArgs() const { | ||||||||
| 5142 | return reinterpret_cast<const TemplateArgument *>(this + 1); | ||||||||
| 5143 | } | ||||||||
| 5144 | |||||||||
| 5145 | /// Retrieve the number of template arguments. | ||||||||
| 5146 | unsigned getNumArgs() const { | ||||||||
| 5147 | return TemplateSpecializationTypeBits.NumArgs; | ||||||||
| 5148 | } | ||||||||
| 5149 | |||||||||
| 5150 | /// Retrieve a specific template argument as a type. | ||||||||
| 5151 | /// \pre \c isArgType(Arg) | ||||||||
| 5152 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||
| 5153 | |||||||||
| 5154 | ArrayRef<TemplateArgument> template_arguments() const { | ||||||||
| 5155 | return {getArgs(), getNumArgs()}; | ||||||||
| 5156 | } | ||||||||
| 5157 | |||||||||
| 5158 | bool isSugared() const { | ||||||||
| 5159 | return !isDependentType() || isCurrentInstantiation() || isTypeAlias(); | ||||||||
| 5160 | } | ||||||||
| 5161 | |||||||||
| 5162 | QualType desugar() const { | ||||||||
| 5163 | return isTypeAlias() ? getAliasedType() : getCanonicalTypeInternal(); | ||||||||
| 5164 | } | ||||||||
| 5165 | |||||||||
| 5166 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { | ||||||||
| 5167 | Profile(ID, Template, template_arguments(), Ctx); | ||||||||
| 5168 | if (isTypeAlias()) | ||||||||
| 5169 | getAliasedType().Profile(ID); | ||||||||
| 5170 | } | ||||||||
| 5171 | |||||||||
| 5172 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName T, | ||||||||
| 5173 | ArrayRef<TemplateArgument> Args, | ||||||||
| 5174 | const ASTContext &Context); | ||||||||
| 5175 | |||||||||
| 5176 | static bool classof(const Type *T) { | ||||||||
| 5177 | return T->getTypeClass() == TemplateSpecialization; | ||||||||
| 5178 | } | ||||||||
| 5179 | }; | ||||||||
| 5180 | |||||||||
| 5181 | /// Print a template argument list, including the '<' and '>' | ||||||||
| 5182 | /// enclosing the template arguments. | ||||||||
| 5183 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||
| 5184 | ArrayRef<TemplateArgument> Args, | ||||||||
| 5185 | const PrintingPolicy &Policy); | ||||||||
| 5186 | |||||||||
| 5187 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||
| 5188 | ArrayRef<TemplateArgumentLoc> Args, | ||||||||
| 5189 | const PrintingPolicy &Policy); | ||||||||
| 5190 | |||||||||
| 5191 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||
| 5192 | const TemplateArgumentListInfo &Args, | ||||||||
| 5193 | const PrintingPolicy &Policy); | ||||||||
| 5194 | |||||||||
| 5195 | /// The injected class name of a C++ class template or class | ||||||||
| 5196 | /// template partial specialization. Used to record that a type was | ||||||||
| 5197 | /// spelled with a bare identifier rather than as a template-id; the | ||||||||
| 5198 | /// equivalent for non-templated classes is just RecordType. | ||||||||
| 5199 | /// | ||||||||
| 5200 | /// Injected class name types are always dependent. Template | ||||||||
| 5201 | /// instantiation turns these into RecordTypes. | ||||||||
| 5202 | /// | ||||||||
| 5203 | /// Injected class name types are always canonical. This works | ||||||||
| 5204 | /// because it is impossible to compare an injected class name type | ||||||||
| 5205 | /// with the corresponding non-injected template type, for the same | ||||||||
| 5206 | /// reason that it is impossible to directly compare template | ||||||||
| 5207 | /// parameters from different dependent contexts: injected class name | ||||||||
| 5208 | /// types can only occur within the scope of a particular templated | ||||||||
| 5209 | /// declaration, and within that scope every template specialization | ||||||||
| 5210 | /// will canonicalize to the injected class name (when appropriate | ||||||||
| 5211 | /// according to the rules of the language). | ||||||||
| 5212 | class InjectedClassNameType : public Type { | ||||||||
| 5213 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 5214 | friend class ASTNodeImporter; | ||||||||
| 5215 | friend class ASTReader; // FIXME: ASTContext::getInjectedClassNameType is not | ||||||||
| 5216 | // currently suitable for AST reading, too much | ||||||||
| 5217 | // interdependencies. | ||||||||
| 5218 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
| 5219 | |||||||||
| 5220 | CXXRecordDecl *Decl; | ||||||||
| 5221 | |||||||||
| 5222 | /// The template specialization which this type represents. | ||||||||
| 5223 | /// For example, in | ||||||||
| 5224 | /// template <class T> class A { ... }; | ||||||||
| 5225 | /// this is A<T>, whereas in | ||||||||
| 5226 | /// template <class X, class Y> class A<B<X,Y> > { ... }; | ||||||||
| 5227 | /// this is A<B<X,Y> >. | ||||||||
| 5228 | /// | ||||||||
| 5229 | /// It is always unqualified, always a template specialization type, | ||||||||
| 5230 | /// and always dependent. | ||||||||
| 5231 | QualType InjectedType; | ||||||||
| 5232 | |||||||||
| 5233 | InjectedClassNameType(CXXRecordDecl *D, QualType TST) | ||||||||
| 5234 | : Type(InjectedClassName, QualType(), | ||||||||
| 5235 | TypeDependence::DependentInstantiation), | ||||||||
| 5236 | Decl(D), InjectedType(TST) { | ||||||||
| 5237 | assert(isa<TemplateSpecializationType>(TST))((isa<TemplateSpecializationType>(TST)) ? static_cast< void> (0) : __assert_fail ("isa<TemplateSpecializationType>(TST)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5237, __PRETTY_FUNCTION__)); | ||||||||
| 5238 | assert(!TST.hasQualifiers())((!TST.hasQualifiers()) ? static_cast<void> (0) : __assert_fail ("!TST.hasQualifiers()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5238, __PRETTY_FUNCTION__)); | ||||||||
| 5239 | assert(TST->isDependentType())((TST->isDependentType()) ? static_cast<void> (0) : __assert_fail ("TST->isDependentType()", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5239, __PRETTY_FUNCTION__)); | ||||||||
| 5240 | } | ||||||||
| 5241 | |||||||||
| 5242 | public: | ||||||||
| 5243 | QualType getInjectedSpecializationType() const { return InjectedType; } | ||||||||
| 5244 | |||||||||
| 5245 | const TemplateSpecializationType *getInjectedTST() const { | ||||||||
| 5246 | return cast<TemplateSpecializationType>(InjectedType.getTypePtr()); | ||||||||
| 5247 | } | ||||||||
| 5248 | |||||||||
| 5249 | TemplateName getTemplateName() const { | ||||||||
| 5250 | return getInjectedTST()->getTemplateName(); | ||||||||
| 5251 | } | ||||||||
| 5252 | |||||||||
| 5253 | CXXRecordDecl *getDecl() const; | ||||||||
| 5254 | |||||||||
| 5255 | bool isSugared() const { return false; } | ||||||||
| 5256 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 5257 | |||||||||
| 5258 | static bool classof(const Type *T) { | ||||||||
| 5259 | return T->getTypeClass() == InjectedClassName; | ||||||||
| 5260 | } | ||||||||
| 5261 | }; | ||||||||
| 5262 | |||||||||
| 5263 | /// The kind of a tag type. | ||||||||
| 5264 | enum TagTypeKind { | ||||||||
| 5265 | /// The "struct" keyword. | ||||||||
| 5266 | TTK_Struct, | ||||||||
| 5267 | |||||||||
| 5268 | /// The "__interface" keyword. | ||||||||
| 5269 | TTK_Interface, | ||||||||
| 5270 | |||||||||
| 5271 | /// The "union" keyword. | ||||||||
| 5272 | TTK_Union, | ||||||||
| 5273 | |||||||||
| 5274 | /// The "class" keyword. | ||||||||
| 5275 | TTK_Class, | ||||||||
| 5276 | |||||||||
| 5277 | /// The "enum" keyword. | ||||||||
| 5278 | TTK_Enum | ||||||||
| 5279 | }; | ||||||||
| 5280 | |||||||||
| 5281 | /// The elaboration keyword that precedes a qualified type name or | ||||||||
| 5282 | /// introduces an elaborated-type-specifier. | ||||||||
| 5283 | enum ElaboratedTypeKeyword { | ||||||||
| 5284 | /// The "struct" keyword introduces the elaborated-type-specifier. | ||||||||
| 5285 | ETK_Struct, | ||||||||
| 5286 | |||||||||
| 5287 | /// The "__interface" keyword introduces the elaborated-type-specifier. | ||||||||
| 5288 | ETK_Interface, | ||||||||
| 5289 | |||||||||
| 5290 | /// The "union" keyword introduces the elaborated-type-specifier. | ||||||||
| 5291 | ETK_Union, | ||||||||
| 5292 | |||||||||
| 5293 | /// The "class" keyword introduces the elaborated-type-specifier. | ||||||||
| 5294 | ETK_Class, | ||||||||
| 5295 | |||||||||
| 5296 | /// The "enum" keyword introduces the elaborated-type-specifier. | ||||||||
| 5297 | ETK_Enum, | ||||||||
| 5298 | |||||||||
| 5299 | /// The "typename" keyword precedes the qualified type name, e.g., | ||||||||
| 5300 | /// \c typename T::type. | ||||||||
| 5301 | ETK_Typename, | ||||||||
| 5302 | |||||||||
| 5303 | /// No keyword precedes the qualified type name. | ||||||||
| 5304 | ETK_None | ||||||||
| 5305 | }; | ||||||||
| 5306 | |||||||||
| 5307 | /// A helper class for Type nodes having an ElaboratedTypeKeyword. | ||||||||
| 5308 | /// The keyword in stored in the free bits of the base class. | ||||||||
| 5309 | /// Also provides a few static helpers for converting and printing | ||||||||
| 5310 | /// elaborated type keyword and tag type kind enumerations. | ||||||||
| 5311 | class TypeWithKeyword : public Type { | ||||||||
| 5312 | protected: | ||||||||
| 5313 | TypeWithKeyword(ElaboratedTypeKeyword Keyword, TypeClass tc, | ||||||||
| 5314 | QualType Canonical, TypeDependence Dependence) | ||||||||
| 5315 | : Type(tc, Canonical, Dependence) { | ||||||||
| 5316 | TypeWithKeywordBits.Keyword = Keyword; | ||||||||
| 5317 | } | ||||||||
| 5318 | |||||||||
| 5319 | public: | ||||||||
| 5320 | ElaboratedTypeKeyword getKeyword() const { | ||||||||
| 5321 | return static_cast<ElaboratedTypeKeyword>(TypeWithKeywordBits.Keyword); | ||||||||
| 5322 | } | ||||||||
| 5323 | |||||||||
| 5324 | /// Converts a type specifier (DeclSpec::TST) into an elaborated type keyword. | ||||||||
| 5325 | static ElaboratedTypeKeyword getKeywordForTypeSpec(unsigned TypeSpec); | ||||||||
| 5326 | |||||||||
| 5327 | /// Converts a type specifier (DeclSpec::TST) into a tag type kind. | ||||||||
| 5328 | /// It is an error to provide a type specifier which *isn't* a tag kind here. | ||||||||
| 5329 | static TagTypeKind getTagTypeKindForTypeSpec(unsigned TypeSpec); | ||||||||
| 5330 | |||||||||
| 5331 | /// Converts a TagTypeKind into an elaborated type keyword. | ||||||||
| 5332 | static ElaboratedTypeKeyword getKeywordForTagTypeKind(TagTypeKind Tag); | ||||||||
| 5333 | |||||||||
| 5334 | /// Converts an elaborated type keyword into a TagTypeKind. | ||||||||
| 5335 | /// It is an error to provide an elaborated type keyword | ||||||||
| 5336 | /// which *isn't* a tag kind here. | ||||||||
| 5337 | static TagTypeKind getTagTypeKindForKeyword(ElaboratedTypeKeyword Keyword); | ||||||||
| 5338 | |||||||||
| 5339 | static bool KeywordIsTagTypeKind(ElaboratedTypeKeyword Keyword); | ||||||||
| 5340 | |||||||||
| 5341 | static StringRef getKeywordName(ElaboratedTypeKeyword Keyword); | ||||||||
| 5342 | |||||||||
| 5343 | static StringRef getTagTypeKindName(TagTypeKind Kind) { | ||||||||
| 5344 | return getKeywordName(getKeywordForTagTypeKind(Kind)); | ||||||||
| 5345 | } | ||||||||
| 5346 | |||||||||
| 5347 | class CannotCastToThisType {}; | ||||||||
| 5348 | static CannotCastToThisType classof(const Type *); | ||||||||
| 5349 | }; | ||||||||
| 5350 | |||||||||
| 5351 | /// Represents a type that was referred to using an elaborated type | ||||||||
| 5352 | /// keyword, e.g., struct S, or via a qualified name, e.g., N::M::type, | ||||||||
| 5353 | /// or both. | ||||||||
| 5354 | /// | ||||||||
| 5355 | /// This type is used to keep track of a type name as written in the | ||||||||
| 5356 | /// source code, including tag keywords and any nested-name-specifiers. | ||||||||
| 5357 | /// The type itself is always "sugar", used to express what was written | ||||||||
| 5358 | /// in the source code but containing no additional semantic information. | ||||||||
| 5359 | class ElaboratedType final | ||||||||
| 5360 | : public TypeWithKeyword, | ||||||||
| 5361 | public llvm::FoldingSetNode, | ||||||||
| 5362 | private llvm::TrailingObjects<ElaboratedType, TagDecl *> { | ||||||||
| 5363 | friend class ASTContext; // ASTContext creates these | ||||||||
| 5364 | friend TrailingObjects; | ||||||||
| 5365 | |||||||||
| 5366 | /// The nested name specifier containing the qualifier. | ||||||||
| 5367 | NestedNameSpecifier *NNS; | ||||||||
| 5368 | |||||||||
| 5369 | /// The type that this qualified name refers to. | ||||||||
| 5370 | QualType NamedType; | ||||||||
| 5371 | |||||||||
| 5372 | /// The (re)declaration of this tag type owned by this occurrence is stored | ||||||||
| 5373 | /// as a trailing object if there is one. Use getOwnedTagDecl to obtain | ||||||||
| 5374 | /// it, or obtain a null pointer if there is none. | ||||||||
| 5375 | |||||||||
| 5376 | ElaboratedType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, | ||||||||
| 5377 | QualType NamedType, QualType CanonType, TagDecl *OwnedTagDecl) | ||||||||
| 5378 | : TypeWithKeyword(Keyword, Elaborated, CanonType, | ||||||||
| 5379 | NamedType->getDependence()), | ||||||||
| 5380 | NNS(NNS), NamedType(NamedType) { | ||||||||
| 5381 | ElaboratedTypeBits.HasOwnedTagDecl = false; | ||||||||
| 5382 | if (OwnedTagDecl) { | ||||||||
| 5383 | ElaboratedTypeBits.HasOwnedTagDecl = true; | ||||||||
| 5384 | *getTrailingObjects<TagDecl *>() = OwnedTagDecl; | ||||||||
| 5385 | } | ||||||||
| 5386 | assert(!(Keyword == ETK_None && NNS == nullptr) &&((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5388, __PRETTY_FUNCTION__)) | ||||||||
| 5387 | "ElaboratedType cannot have elaborated type keyword "((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5388, __PRETTY_FUNCTION__)) | ||||||||
| 5388 | "and name qualifier both null.")((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5388, __PRETTY_FUNCTION__)); | ||||||||
| 5389 | } | ||||||||
| 5390 | |||||||||
| 5391 | public: | ||||||||
| 5392 | /// Retrieve the qualification on this type. | ||||||||
| 5393 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||
| 5394 | |||||||||
| 5395 | /// Retrieve the type named by the qualified-id. | ||||||||
| 5396 | QualType getNamedType() const { return NamedType; } | ||||||||
| 5397 | |||||||||
| 5398 | /// Remove a single level of sugar. | ||||||||
| 5399 | QualType desugar() const { return getNamedType(); } | ||||||||
| 5400 | |||||||||
| 5401 | /// Returns whether this type directly provides sugar. | ||||||||
| 5402 | bool isSugared() const { return true; } | ||||||||
| 5403 | |||||||||
| 5404 | /// Return the (re)declaration of this type owned by this occurrence of this | ||||||||
| 5405 | /// type, or nullptr if there is none. | ||||||||
| 5406 | TagDecl *getOwnedTagDecl() const { | ||||||||
| 5407 | return ElaboratedTypeBits.HasOwnedTagDecl ? *getTrailingObjects<TagDecl *>() | ||||||||
| 5408 | : nullptr; | ||||||||
| 5409 | } | ||||||||
| 5410 | |||||||||
| 5411 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 5412 | Profile(ID, getKeyword(), NNS, NamedType, getOwnedTagDecl()); | ||||||||
| 5413 | } | ||||||||
| 5414 | |||||||||
| 5415 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, | ||||||||
| 5416 | NestedNameSpecifier *NNS, QualType NamedType, | ||||||||
| 5417 | TagDecl *OwnedTagDecl) { | ||||||||
| 5418 | ID.AddInteger(Keyword); | ||||||||
| 5419 | ID.AddPointer(NNS); | ||||||||
| 5420 | NamedType.Profile(ID); | ||||||||
| 5421 | ID.AddPointer(OwnedTagDecl); | ||||||||
| 5422 | } | ||||||||
| 5423 | |||||||||
| 5424 | static bool classof(const Type *T) { return T->getTypeClass() == Elaborated; } | ||||||||
| 5425 | }; | ||||||||
| 5426 | |||||||||
| 5427 | /// Represents a qualified type name for which the type name is | ||||||||
| 5428 | /// dependent. | ||||||||
| 5429 | /// | ||||||||
| 5430 | /// DependentNameType represents a class of dependent types that involve a | ||||||||
| 5431 | /// possibly dependent nested-name-specifier (e.g., "T::") followed by a | ||||||||
| 5432 | /// name of a type. The DependentNameType may start with a "typename" (for a | ||||||||
| 5433 | /// typename-specifier), "class", "struct", "union", or "enum" (for a | ||||||||
| 5434 | /// dependent elaborated-type-specifier), or nothing (in contexts where we | ||||||||
| 5435 | /// know that we must be referring to a type, e.g., in a base class specifier). | ||||||||
| 5436 | /// Typically the nested-name-specifier is dependent, but in MSVC compatibility | ||||||||
| 5437 | /// mode, this type is used with non-dependent names to delay name lookup until | ||||||||
| 5438 | /// instantiation. | ||||||||
| 5439 | class DependentNameType : public TypeWithKeyword, public llvm::FoldingSetNode { | ||||||||
| 5440 | friend class ASTContext; // ASTContext creates these | ||||||||
| 5441 | |||||||||
| 5442 | /// The nested name specifier containing the qualifier. | ||||||||
| 5443 | NestedNameSpecifier *NNS; | ||||||||
| 5444 | |||||||||
| 5445 | /// The type that this typename specifier refers to. | ||||||||
| 5446 | const IdentifierInfo *Name; | ||||||||
| 5447 | |||||||||
| 5448 | DependentNameType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, | ||||||||
| 5449 | const IdentifierInfo *Name, QualType CanonType) | ||||||||
| 5450 | : TypeWithKeyword(Keyword, DependentName, CanonType, | ||||||||
| 5451 | TypeDependence::DependentInstantiation | | ||||||||
| 5452 | toTypeDependence(NNS->getDependence())), | ||||||||
| 5453 | NNS(NNS), Name(Name) {} | ||||||||
| 5454 | |||||||||
| 5455 | public: | ||||||||
| 5456 | /// Retrieve the qualification on this type. | ||||||||
| 5457 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||
| 5458 | |||||||||
| 5459 | /// Retrieve the type named by the typename specifier as an identifier. | ||||||||
| 5460 | /// | ||||||||
| 5461 | /// This routine will return a non-NULL identifier pointer when the | ||||||||
| 5462 | /// form of the original typename was terminated by an identifier, | ||||||||
| 5463 | /// e.g., "typename T::type". | ||||||||
| 5464 | const IdentifierInfo *getIdentifier() const { | ||||||||
| 5465 | return Name; | ||||||||
| 5466 | } | ||||||||
| 5467 | |||||||||
| 5468 | bool isSugared() const { return false; } | ||||||||
| 5469 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 5470 | |||||||||
| 5471 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 5472 | Profile(ID, getKeyword(), NNS, Name); | ||||||||
| 5473 | } | ||||||||
| 5474 | |||||||||
| 5475 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, | ||||||||
| 5476 | NestedNameSpecifier *NNS, const IdentifierInfo *Name) { | ||||||||
| 5477 | ID.AddInteger(Keyword); | ||||||||
| 5478 | ID.AddPointer(NNS); | ||||||||
| 5479 | ID.AddPointer(Name); | ||||||||
| 5480 | } | ||||||||
| 5481 | |||||||||
| 5482 | static bool classof(const Type *T) { | ||||||||
| 5483 | return T->getTypeClass() == DependentName; | ||||||||
| 5484 | } | ||||||||
| 5485 | }; | ||||||||
| 5486 | |||||||||
| 5487 | /// Represents a template specialization type whose template cannot be | ||||||||
| 5488 | /// resolved, e.g. | ||||||||
| 5489 | /// A<T>::template B<T> | ||||||||
| 5490 | class alignas(8) DependentTemplateSpecializationType | ||||||||
| 5491 | : public TypeWithKeyword, | ||||||||
| 5492 | public llvm::FoldingSetNode { | ||||||||
| 5493 | friend class ASTContext; // ASTContext creates these | ||||||||
| 5494 | |||||||||
| 5495 | /// The nested name specifier containing the qualifier. | ||||||||
| 5496 | NestedNameSpecifier *NNS; | ||||||||
| 5497 | |||||||||
| 5498 | /// The identifier of the template. | ||||||||
| 5499 | const IdentifierInfo *Name; | ||||||||
| 5500 | |||||||||
| 5501 | DependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, | ||||||||
| 5502 | NestedNameSpecifier *NNS, | ||||||||
| 5503 | const IdentifierInfo *Name, | ||||||||
| 5504 | ArrayRef<TemplateArgument> Args, | ||||||||
| 5505 | QualType Canon); | ||||||||
| 5506 | |||||||||
| 5507 | const TemplateArgument *getArgBuffer() const { | ||||||||
| 5508 | return reinterpret_cast<const TemplateArgument*>(this+1); | ||||||||
| 5509 | } | ||||||||
| 5510 | |||||||||
| 5511 | TemplateArgument *getArgBuffer() { | ||||||||
| 5512 | return reinterpret_cast<TemplateArgument*>(this+1); | ||||||||
| 5513 | } | ||||||||
| 5514 | |||||||||
| 5515 | public: | ||||||||
| 5516 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||
| 5517 | const IdentifierInfo *getIdentifier() const { return Name; } | ||||||||
| 5518 | |||||||||
| 5519 | /// Retrieve the template arguments. | ||||||||
| 5520 | const TemplateArgument *getArgs() const { | ||||||||
| 5521 | return getArgBuffer(); | ||||||||
| 5522 | } | ||||||||
| 5523 | |||||||||
| 5524 | /// Retrieve the number of template arguments. | ||||||||
| 5525 | unsigned getNumArgs() const { | ||||||||
| 5526 | return DependentTemplateSpecializationTypeBits.NumArgs; | ||||||||
| 5527 | } | ||||||||
| 5528 | |||||||||
| 5529 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||
| 5530 | |||||||||
| 5531 | ArrayRef<TemplateArgument> template_arguments() const { | ||||||||
| 5532 | return {getArgs(), getNumArgs()}; | ||||||||
| 5533 | } | ||||||||
| 5534 | |||||||||
| 5535 | using iterator = const TemplateArgument *; | ||||||||
| 5536 | |||||||||
| 5537 | iterator begin() const { return getArgs(); } | ||||||||
| 5538 | iterator end() const; // inline in TemplateBase.h | ||||||||
| 5539 | |||||||||
| 5540 | bool isSugared() const { return false; } | ||||||||
| 5541 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 5542 | |||||||||
| 5543 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { | ||||||||
| 5544 | Profile(ID, Context, getKeyword(), NNS, Name, {getArgs(), getNumArgs()}); | ||||||||
| 5545 | } | ||||||||
| 5546 | |||||||||
| 5547 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 5548 | const ASTContext &Context, | ||||||||
| 5549 | ElaboratedTypeKeyword Keyword, | ||||||||
| 5550 | NestedNameSpecifier *Qualifier, | ||||||||
| 5551 | const IdentifierInfo *Name, | ||||||||
| 5552 | ArrayRef<TemplateArgument> Args); | ||||||||
| 5553 | |||||||||
| 5554 | static bool classof(const Type *T) { | ||||||||
| 5555 | return T->getTypeClass() == DependentTemplateSpecialization; | ||||||||
| 5556 | } | ||||||||
| 5557 | }; | ||||||||
| 5558 | |||||||||
| 5559 | /// Represents a pack expansion of types. | ||||||||
| 5560 | /// | ||||||||
| 5561 | /// Pack expansions are part of C++11 variadic templates. A pack | ||||||||
| 5562 | /// expansion contains a pattern, which itself contains one or more | ||||||||
| 5563 | /// "unexpanded" parameter packs. When instantiated, a pack expansion | ||||||||
| 5564 | /// produces a series of types, each instantiated from the pattern of | ||||||||
| 5565 | /// the expansion, where the Ith instantiation of the pattern uses the | ||||||||
| 5566 | /// Ith arguments bound to each of the unexpanded parameter packs. The | ||||||||
| 5567 | /// pack expansion is considered to "expand" these unexpanded | ||||||||
| 5568 | /// parameter packs. | ||||||||
| 5569 | /// | ||||||||
| 5570 | /// \code | ||||||||
| 5571 | /// template<typename ...Types> struct tuple; | ||||||||
| 5572 | /// | ||||||||
| 5573 | /// template<typename ...Types> | ||||||||
| 5574 | /// struct tuple_of_references { | ||||||||
| 5575 | /// typedef tuple<Types&...> type; | ||||||||
| 5576 | /// }; | ||||||||
| 5577 | /// \endcode | ||||||||
| 5578 | /// | ||||||||
| 5579 | /// Here, the pack expansion \c Types&... is represented via a | ||||||||
| 5580 | /// PackExpansionType whose pattern is Types&. | ||||||||
| 5581 | class PackExpansionType : public Type, public llvm::FoldingSetNode { | ||||||||
| 5582 | friend class ASTContext; // ASTContext creates these | ||||||||
| 5583 | |||||||||
| 5584 | /// The pattern of the pack expansion. | ||||||||
| 5585 | QualType Pattern; | ||||||||
| 5586 | |||||||||
| 5587 | PackExpansionType(QualType Pattern, QualType Canon, | ||||||||
| 5588 | Optional<unsigned> NumExpansions) | ||||||||
| 5589 | : Type(PackExpansion, Canon, | ||||||||
| 5590 | (Pattern->getDependence() | TypeDependence::Dependent | | ||||||||
| 5591 | TypeDependence::Instantiation) & | ||||||||
| 5592 | ~TypeDependence::UnexpandedPack), | ||||||||
| 5593 | Pattern(Pattern) { | ||||||||
| 5594 | PackExpansionTypeBits.NumExpansions = | ||||||||
| 5595 | NumExpansions ? *NumExpansions + 1 : 0; | ||||||||
| 5596 | } | ||||||||
| 5597 | |||||||||
| 5598 | public: | ||||||||
| 5599 | /// Retrieve the pattern of this pack expansion, which is the | ||||||||
| 5600 | /// type that will be repeatedly instantiated when instantiating the | ||||||||
| 5601 | /// pack expansion itself. | ||||||||
| 5602 | QualType getPattern() const { return Pattern; } | ||||||||
| 5603 | |||||||||
| 5604 | /// Retrieve the number of expansions that this pack expansion will | ||||||||
| 5605 | /// generate, if known. | ||||||||
| 5606 | Optional<unsigned> getNumExpansions() const { | ||||||||
| 5607 | if (PackExpansionTypeBits.NumExpansions) | ||||||||
| 5608 | return PackExpansionTypeBits.NumExpansions - 1; | ||||||||
| 5609 | return None; | ||||||||
| 5610 | } | ||||||||
| 5611 | |||||||||
| 5612 | bool isSugared() const { return false; } | ||||||||
| 5613 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 5614 | |||||||||
| 5615 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 5616 | Profile(ID, getPattern(), getNumExpansions()); | ||||||||
| 5617 | } | ||||||||
| 5618 | |||||||||
| 5619 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pattern, | ||||||||
| 5620 | Optional<unsigned> NumExpansions) { | ||||||||
| 5621 | ID.AddPointer(Pattern.getAsOpaquePtr()); | ||||||||
| 5622 | ID.AddBoolean(NumExpansions.hasValue()); | ||||||||
| 5623 | if (NumExpansions) | ||||||||
| 5624 | ID.AddInteger(*NumExpansions); | ||||||||
| 5625 | } | ||||||||
| 5626 | |||||||||
| 5627 | static bool classof(const Type *T) { | ||||||||
| 5628 | return T->getTypeClass() == PackExpansion; | ||||||||
| 5629 | } | ||||||||
| 5630 | }; | ||||||||
| 5631 | |||||||||
| 5632 | /// This class wraps the list of protocol qualifiers. For types that can | ||||||||
| 5633 | /// take ObjC protocol qualifers, they can subclass this class. | ||||||||
| 5634 | template <class T> | ||||||||
| 5635 | class ObjCProtocolQualifiers { | ||||||||
| 5636 | protected: | ||||||||
| 5637 | ObjCProtocolQualifiers() = default; | ||||||||
| 5638 | |||||||||
| 5639 | ObjCProtocolDecl * const *getProtocolStorage() const { | ||||||||
| 5640 | return const_cast<ObjCProtocolQualifiers*>(this)->getProtocolStorage(); | ||||||||
| 5641 | } | ||||||||
| 5642 | |||||||||
| 5643 | ObjCProtocolDecl **getProtocolStorage() { | ||||||||
| 5644 | return static_cast<T*>(this)->getProtocolStorageImpl(); | ||||||||
| 5645 | } | ||||||||
| 5646 | |||||||||
| 5647 | void setNumProtocols(unsigned N) { | ||||||||
| 5648 | static_cast<T*>(this)->setNumProtocolsImpl(N); | ||||||||
| 5649 | } | ||||||||
| 5650 | |||||||||
| 5651 | void initialize(ArrayRef<ObjCProtocolDecl *> protocols) { | ||||||||
| 5652 | setNumProtocols(protocols.size()); | ||||||||
| 5653 | assert(getNumProtocols() == protocols.size() &&((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count" ) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5654, __PRETTY_FUNCTION__)) | ||||||||
| 5654 | "bitfield overflow in protocol count")((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count" ) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5654, __PRETTY_FUNCTION__)); | ||||||||
| 5655 | if (!protocols.empty()) | ||||||||
| 5656 | memcpy(getProtocolStorage(), protocols.data(), | ||||||||
| 5657 | protocols.size() * sizeof(ObjCProtocolDecl*)); | ||||||||
| 5658 | } | ||||||||
| 5659 | |||||||||
| 5660 | public: | ||||||||
| 5661 | using qual_iterator = ObjCProtocolDecl * const *; | ||||||||
| 5662 | using qual_range = llvm::iterator_range<qual_iterator>; | ||||||||
| 5663 | |||||||||
| 5664 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } | ||||||||
| 5665 | qual_iterator qual_begin() const { return getProtocolStorage(); } | ||||||||
| 5666 | qual_iterator qual_end() const { return qual_begin() + getNumProtocols(); } | ||||||||
| 5667 | |||||||||
| 5668 | bool qual_empty() const { return getNumProtocols() == 0; } | ||||||||
| 5669 | |||||||||
| 5670 | /// Return the number of qualifying protocols in this type, or 0 if | ||||||||
| 5671 | /// there are none. | ||||||||
| 5672 | unsigned getNumProtocols() const { | ||||||||
| 5673 | return static_cast<const T*>(this)->getNumProtocolsImpl(); | ||||||||
| 5674 | } | ||||||||
| 5675 | |||||||||
| 5676 | /// Fetch a protocol by index. | ||||||||
| 5677 | ObjCProtocolDecl *getProtocol(unsigned I) const { | ||||||||
| 5678 | assert(I < getNumProtocols() && "Out-of-range protocol access")((I < getNumProtocols() && "Out-of-range protocol access" ) ? static_cast<void> (0) : __assert_fail ("I < getNumProtocols() && \"Out-of-range protocol access\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5678, __PRETTY_FUNCTION__)); | ||||||||
| 5679 | return qual_begin()[I]; | ||||||||
| 5680 | } | ||||||||
| 5681 | |||||||||
| 5682 | /// Retrieve all of the protocol qualifiers. | ||||||||
| 5683 | ArrayRef<ObjCProtocolDecl *> getProtocols() const { | ||||||||
| 5684 | return ArrayRef<ObjCProtocolDecl *>(qual_begin(), getNumProtocols()); | ||||||||
| 5685 | } | ||||||||
| 5686 | }; | ||||||||
| 5687 | |||||||||
| 5688 | /// Represents a type parameter type in Objective C. It can take | ||||||||
| 5689 | /// a list of protocols. | ||||||||
| 5690 | class ObjCTypeParamType : public Type, | ||||||||
| 5691 | public ObjCProtocolQualifiers<ObjCTypeParamType>, | ||||||||
| 5692 | public llvm::FoldingSetNode { | ||||||||
| 5693 | friend class ASTContext; | ||||||||
| 5694 | friend class ObjCProtocolQualifiers<ObjCTypeParamType>; | ||||||||
| 5695 | |||||||||
| 5696 | /// The number of protocols stored on this type. | ||||||||
| 5697 | unsigned NumProtocols : 6; | ||||||||
| 5698 | |||||||||
| 5699 | ObjCTypeParamDecl *OTPDecl; | ||||||||
| 5700 | |||||||||
| 5701 | /// The protocols are stored after the ObjCTypeParamType node. In the | ||||||||
| 5702 | /// canonical type, the list of protocols are sorted alphabetically | ||||||||
| 5703 | /// and uniqued. | ||||||||
| 5704 | ObjCProtocolDecl **getProtocolStorageImpl(); | ||||||||
| 5705 | |||||||||
| 5706 | /// Return the number of qualifying protocols in this interface type, | ||||||||
| 5707 | /// or 0 if there are none. | ||||||||
| 5708 | unsigned getNumProtocolsImpl() const { | ||||||||
| 5709 | return NumProtocols; | ||||||||
| 5710 | } | ||||||||
| 5711 | |||||||||
| 5712 | void setNumProtocolsImpl(unsigned N) { | ||||||||
| 5713 | NumProtocols = N; | ||||||||
| 5714 | } | ||||||||
| 5715 | |||||||||
| 5716 | ObjCTypeParamType(const ObjCTypeParamDecl *D, | ||||||||
| 5717 | QualType can, | ||||||||
| 5718 | ArrayRef<ObjCProtocolDecl *> protocols); | ||||||||
| 5719 | |||||||||
| 5720 | public: | ||||||||
| 5721 | bool isSugared() const { return true; } | ||||||||
| 5722 | QualType desugar() const { return getCanonicalTypeInternal(); } | ||||||||
| 5723 | |||||||||
| 5724 | static bool classof(const Type *T) { | ||||||||
| 5725 | return T->getTypeClass() == ObjCTypeParam; | ||||||||
| 5726 | } | ||||||||
| 5727 | |||||||||
| 5728 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||
| 5729 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 5730 | const ObjCTypeParamDecl *OTPDecl, | ||||||||
| 5731 | QualType CanonicalType, | ||||||||
| 5732 | ArrayRef<ObjCProtocolDecl *> protocols); | ||||||||
| 5733 | |||||||||
| 5734 | ObjCTypeParamDecl *getDecl() const { return OTPDecl; } | ||||||||
| 5735 | }; | ||||||||
| 5736 | |||||||||
| 5737 | /// Represents a class type in Objective C. | ||||||||
| 5738 | /// | ||||||||
| 5739 | /// Every Objective C type is a combination of a base type, a set of | ||||||||
| 5740 | /// type arguments (optional, for parameterized classes) and a list of | ||||||||
| 5741 | /// protocols. | ||||||||
| 5742 | /// | ||||||||
| 5743 | /// Given the following declarations: | ||||||||
| 5744 | /// \code | ||||||||
| 5745 | /// \@class C<T>; | ||||||||
| 5746 | /// \@protocol P; | ||||||||
| 5747 | /// \endcode | ||||||||
| 5748 | /// | ||||||||
| 5749 | /// 'C' is an ObjCInterfaceType C. It is sugar for an ObjCObjectType | ||||||||
| 5750 | /// with base C and no protocols. | ||||||||
| 5751 | /// | ||||||||
| 5752 | /// 'C<P>' is an unspecialized ObjCObjectType with base C and protocol list [P]. | ||||||||
| 5753 | /// 'C<C*>' is a specialized ObjCObjectType with type arguments 'C*' and no | ||||||||
| 5754 | /// protocol list. | ||||||||
| 5755 | /// 'C<C*><P>' is a specialized ObjCObjectType with base C, type arguments 'C*', | ||||||||
| 5756 | /// and protocol list [P]. | ||||||||
| 5757 | /// | ||||||||
| 5758 | /// 'id' is a TypedefType which is sugar for an ObjCObjectPointerType whose | ||||||||
| 5759 | /// pointee is an ObjCObjectType with base BuiltinType::ObjCIdType | ||||||||
| 5760 | /// and no protocols. | ||||||||
| 5761 | /// | ||||||||
| 5762 | /// 'id<P>' is an ObjCObjectPointerType whose pointee is an ObjCObjectType | ||||||||
| 5763 | /// with base BuiltinType::ObjCIdType and protocol list [P]. Eventually | ||||||||
| 5764 | /// this should get its own sugar class to better represent the source. | ||||||||
| 5765 | class ObjCObjectType : public Type, | ||||||||
| 5766 | public ObjCProtocolQualifiers<ObjCObjectType> { | ||||||||
| 5767 | friend class ObjCProtocolQualifiers<ObjCObjectType>; | ||||||||
| 5768 | |||||||||
| 5769 | // ObjCObjectType.NumTypeArgs - the number of type arguments stored | ||||||||
| 5770 | // after the ObjCObjectPointerType node. | ||||||||
| 5771 | // ObjCObjectType.NumProtocols - the number of protocols stored | ||||||||
| 5772 | // after the type arguments of ObjCObjectPointerType node. | ||||||||
| 5773 | // | ||||||||
| 5774 | // These protocols are those written directly on the type. If | ||||||||
| 5775 | // protocol qualifiers ever become additive, the iterators will need | ||||||||
| 5776 | // to get kindof complicated. | ||||||||
| 5777 | // | ||||||||
| 5778 | // In the canonical object type, these are sorted alphabetically | ||||||||
| 5779 | // and uniqued. | ||||||||
| 5780 | |||||||||
| 5781 | /// Either a BuiltinType or an InterfaceType or sugar for either. | ||||||||
| 5782 | QualType BaseType; | ||||||||
| 5783 | |||||||||
| 5784 | /// Cached superclass type. | ||||||||
| 5785 | mutable llvm::PointerIntPair<const ObjCObjectType *, 1, bool> | ||||||||
| 5786 | CachedSuperClassType; | ||||||||
| 5787 | |||||||||
| 5788 | QualType *getTypeArgStorage(); | ||||||||
| 5789 | const QualType *getTypeArgStorage() const { | ||||||||
| 5790 | return const_cast<ObjCObjectType *>(this)->getTypeArgStorage(); | ||||||||
| 5791 | } | ||||||||
| 5792 | |||||||||
| 5793 | ObjCProtocolDecl **getProtocolStorageImpl(); | ||||||||
| 5794 | /// Return the number of qualifying protocols in this interface type, | ||||||||
| 5795 | /// or 0 if there are none. | ||||||||
| 5796 | unsigned getNumProtocolsImpl() const { | ||||||||
| 5797 | return ObjCObjectTypeBits.NumProtocols; | ||||||||
| 5798 | } | ||||||||
| 5799 | void setNumProtocolsImpl(unsigned N) { | ||||||||
| 5800 | ObjCObjectTypeBits.NumProtocols = N; | ||||||||
| 5801 | } | ||||||||
| 5802 | |||||||||
| 5803 | protected: | ||||||||
| 5804 | enum Nonce_ObjCInterface { Nonce_ObjCInterface }; | ||||||||
| 5805 | |||||||||
| 5806 | ObjCObjectType(QualType Canonical, QualType Base, | ||||||||
| 5807 | ArrayRef<QualType> typeArgs, | ||||||||
| 5808 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||
| 5809 | bool isKindOf); | ||||||||
| 5810 | |||||||||
| 5811 | ObjCObjectType(enum Nonce_ObjCInterface) | ||||||||
| 5812 | : Type(ObjCInterface, QualType(), TypeDependence::None), | ||||||||
| 5813 | BaseType(QualType(this_(), 0)) { | ||||||||
| 5814 | ObjCObjectTypeBits.NumProtocols = 0; | ||||||||
| 5815 | ObjCObjectTypeBits.NumTypeArgs = 0; | ||||||||
| 5816 | ObjCObjectTypeBits.IsKindOf = 0; | ||||||||
| 5817 | } | ||||||||
| 5818 | |||||||||
| 5819 | void computeSuperClassTypeSlow() const; | ||||||||
| 5820 | |||||||||
| 5821 | public: | ||||||||
| 5822 | /// Gets the base type of this object type. This is always (possibly | ||||||||
| 5823 | /// sugar for) one of: | ||||||||
| 5824 | /// - the 'id' builtin type (as opposed to the 'id' type visible to the | ||||||||
| 5825 | /// user, which is a typedef for an ObjCObjectPointerType) | ||||||||
| 5826 | /// - the 'Class' builtin type (same caveat) | ||||||||
| 5827 | /// - an ObjCObjectType (currently always an ObjCInterfaceType) | ||||||||
| 5828 | QualType getBaseType() const { return BaseType; } | ||||||||
| 5829 | |||||||||
| 5830 | bool isObjCId() const { | ||||||||
| 5831 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCId); | ||||||||
| 5832 | } | ||||||||
| 5833 | |||||||||
| 5834 | bool isObjCClass() const { | ||||||||
| 5835 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCClass); | ||||||||
| 5836 | } | ||||||||
| 5837 | |||||||||
| 5838 | bool isObjCUnqualifiedId() const { return qual_empty() && isObjCId(); } | ||||||||
| 5839 | bool isObjCUnqualifiedClass() const { return qual_empty() && isObjCClass(); } | ||||||||
| 5840 | bool isObjCUnqualifiedIdOrClass() const { | ||||||||
| 5841 | if (!qual_empty()) return false; | ||||||||
| 5842 | if (const BuiltinType *T = getBaseType()->getAs<BuiltinType>()) | ||||||||
| 5843 | return T->getKind() == BuiltinType::ObjCId || | ||||||||
| 5844 | T->getKind() == BuiltinType::ObjCClass; | ||||||||
| 5845 | return false; | ||||||||
| 5846 | } | ||||||||
| 5847 | bool isObjCQualifiedId() const { return !qual_empty() && isObjCId(); } | ||||||||
| 5848 | bool isObjCQualifiedClass() const { return !qual_empty() && isObjCClass(); } | ||||||||
| 5849 | |||||||||
| 5850 | /// Gets the interface declaration for this object type, if the base type | ||||||||
| 5851 | /// really is an interface. | ||||||||
| 5852 | ObjCInterfaceDecl *getInterface() const; | ||||||||
| 5853 | |||||||||
| 5854 | /// Determine whether this object type is "specialized", meaning | ||||||||
| 5855 | /// that it has type arguments. | ||||||||
| 5856 | bool isSpecialized() const; | ||||||||
| 5857 | |||||||||
| 5858 | /// Determine whether this object type was written with type arguments. | ||||||||
| 5859 | bool isSpecializedAsWritten() const { | ||||||||
| 5860 | return ObjCObjectTypeBits.NumTypeArgs > 0; | ||||||||
| 5861 | } | ||||||||
| 5862 | |||||||||
| 5863 | /// Determine whether this object type is "unspecialized", meaning | ||||||||
| 5864 | /// that it has no type arguments. | ||||||||
| 5865 | bool isUnspecialized() const { return !isSpecialized(); } | ||||||||
| 5866 | |||||||||
| 5867 | /// Determine whether this object type is "unspecialized" as | ||||||||
| 5868 | /// written, meaning that it has no type arguments. | ||||||||
| 5869 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } | ||||||||
| 5870 | |||||||||
| 5871 | /// Retrieve the type arguments of this object type (semantically). | ||||||||
| 5872 | ArrayRef<QualType> getTypeArgs() const; | ||||||||
| 5873 | |||||||||
| 5874 | /// Retrieve the type arguments of this object type as they were | ||||||||
| 5875 | /// written. | ||||||||
| 5876 | ArrayRef<QualType> getTypeArgsAsWritten() const { | ||||||||
| 5877 | return llvm::makeArrayRef(getTypeArgStorage(), | ||||||||
| 5878 | ObjCObjectTypeBits.NumTypeArgs); | ||||||||
| 5879 | } | ||||||||
| 5880 | |||||||||
| 5881 | /// Whether this is a "__kindof" type as written. | ||||||||
| 5882 | bool isKindOfTypeAsWritten() const { return ObjCObjectTypeBits.IsKindOf; } | ||||||||
| 5883 | |||||||||
| 5884 | /// Whether this ia a "__kindof" type (semantically). | ||||||||
| 5885 | bool isKindOfType() const; | ||||||||
| 5886 | |||||||||
| 5887 | /// Retrieve the type of the superclass of this object type. | ||||||||
| 5888 | /// | ||||||||
| 5889 | /// This operation substitutes any type arguments into the | ||||||||
| 5890 | /// superclass of the current class type, potentially producing a | ||||||||
| 5891 | /// specialization of the superclass type. Produces a null type if | ||||||||
| 5892 | /// there is no superclass. | ||||||||
| 5893 | QualType getSuperClassType() const { | ||||||||
| 5894 | if (!CachedSuperClassType.getInt()) | ||||||||
| 5895 | computeSuperClassTypeSlow(); | ||||||||
| 5896 | |||||||||
| 5897 | assert(CachedSuperClassType.getInt() && "Superclass not set?")((CachedSuperClassType.getInt() && "Superclass not set?" ) ? static_cast<void> (0) : __assert_fail ("CachedSuperClassType.getInt() && \"Superclass not set?\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 5897, __PRETTY_FUNCTION__)); | ||||||||
| 5898 | return QualType(CachedSuperClassType.getPointer(), 0); | ||||||||
| 5899 | } | ||||||||
| 5900 | |||||||||
| 5901 | /// Strip off the Objective-C "kindof" type and (with it) any | ||||||||
| 5902 | /// protocol qualifiers. | ||||||||
| 5903 | QualType stripObjCKindOfTypeAndQuals(const ASTContext &ctx) const; | ||||||||
| 5904 | |||||||||
| 5905 | bool isSugared() const { return false; } | ||||||||
| 5906 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 5907 | |||||||||
| 5908 | static bool classof(const Type *T) { | ||||||||
| 5909 | return T->getTypeClass() == ObjCObject || | ||||||||
| 5910 | T->getTypeClass() == ObjCInterface; | ||||||||
| 5911 | } | ||||||||
| 5912 | }; | ||||||||
| 5913 | |||||||||
| 5914 | /// A class providing a concrete implementation | ||||||||
| 5915 | /// of ObjCObjectType, so as to not increase the footprint of | ||||||||
| 5916 | /// ObjCInterfaceType. Code outside of ASTContext and the core type | ||||||||
| 5917 | /// system should not reference this type. | ||||||||
| 5918 | class ObjCObjectTypeImpl : public ObjCObjectType, public llvm::FoldingSetNode { | ||||||||
| 5919 | friend class ASTContext; | ||||||||
| 5920 | |||||||||
| 5921 | // If anyone adds fields here, ObjCObjectType::getProtocolStorage() | ||||||||
| 5922 | // will need to be modified. | ||||||||
| 5923 | |||||||||
| 5924 | ObjCObjectTypeImpl(QualType Canonical, QualType Base, | ||||||||
| 5925 | ArrayRef<QualType> typeArgs, | ||||||||
| 5926 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||
| 5927 | bool isKindOf) | ||||||||
| 5928 | : ObjCObjectType(Canonical, Base, typeArgs, protocols, isKindOf) {} | ||||||||
| 5929 | |||||||||
| 5930 | public: | ||||||||
| 5931 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||
| 5932 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||
| 5933 | QualType Base, | ||||||||
| 5934 | ArrayRef<QualType> typeArgs, | ||||||||
| 5935 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||
| 5936 | bool isKindOf); | ||||||||
| 5937 | }; | ||||||||
| 5938 | |||||||||
| 5939 | inline QualType *ObjCObjectType::getTypeArgStorage() { | ||||||||
| 5940 | return reinterpret_cast<QualType *>(static_cast<ObjCObjectTypeImpl*>(this)+1); | ||||||||
| 5941 | } | ||||||||
| 5942 | |||||||||
| 5943 | inline ObjCProtocolDecl **ObjCObjectType::getProtocolStorageImpl() { | ||||||||
| 5944 | return reinterpret_cast<ObjCProtocolDecl**>( | ||||||||
| 5945 | getTypeArgStorage() + ObjCObjectTypeBits.NumTypeArgs); | ||||||||
| 5946 | } | ||||||||
| 5947 | |||||||||
| 5948 | inline ObjCProtocolDecl **ObjCTypeParamType::getProtocolStorageImpl() { | ||||||||
| 5949 | return reinterpret_cast<ObjCProtocolDecl**>( | ||||||||
| 5950 | static_cast<ObjCTypeParamType*>(this)+1); | ||||||||
| 5951 | } | ||||||||
| 5952 | |||||||||
| 5953 | /// Interfaces are the core concept in Objective-C for object oriented design. | ||||||||
| 5954 | /// They basically correspond to C++ classes. There are two kinds of interface | ||||||||
| 5955 | /// types: normal interfaces like `NSString`, and qualified interfaces, which | ||||||||
| 5956 | /// are qualified with a protocol list like `NSString<NSCopyable, NSAmazing>`. | ||||||||
| 5957 | /// | ||||||||
| 5958 | /// ObjCInterfaceType guarantees the following properties when considered | ||||||||
| 5959 | /// as a subtype of its superclass, ObjCObjectType: | ||||||||
| 5960 | /// - There are no protocol qualifiers. To reinforce this, code which | ||||||||
| 5961 | /// tries to invoke the protocol methods via an ObjCInterfaceType will | ||||||||
| 5962 | /// fail to compile. | ||||||||
| 5963 | /// - It is its own base type. That is, if T is an ObjCInterfaceType*, | ||||||||
| 5964 | /// T->getBaseType() == QualType(T, 0). | ||||||||
| 5965 | class ObjCInterfaceType : public ObjCObjectType { | ||||||||
| 5966 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 5967 | friend class ASTReader; | ||||||||
| 5968 | friend class ObjCInterfaceDecl; | ||||||||
| 5969 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||
| 5970 | |||||||||
| 5971 | mutable ObjCInterfaceDecl *Decl; | ||||||||
| 5972 | |||||||||
| 5973 | ObjCInterfaceType(const ObjCInterfaceDecl *D) | ||||||||
| 5974 | : ObjCObjectType(Nonce_ObjCInterface), | ||||||||
| 5975 | Decl(const_cast<ObjCInterfaceDecl*>(D)) {} | ||||||||
| 5976 | |||||||||
| 5977 | public: | ||||||||
| 5978 | /// Get the declaration of this interface. | ||||||||
| 5979 | ObjCInterfaceDecl *getDecl() const { return Decl; } | ||||||||
| 5980 | |||||||||
| 5981 | bool isSugared() const { return false; } | ||||||||
| 5982 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 5983 | |||||||||
| 5984 | static bool classof(const Type *T) { | ||||||||
| 5985 | return T->getTypeClass() == ObjCInterface; | ||||||||
| 5986 | } | ||||||||
| 5987 | |||||||||
| 5988 | // Nonsense to "hide" certain members of ObjCObjectType within this | ||||||||
| 5989 | // class. People asking for protocols on an ObjCInterfaceType are | ||||||||
| 5990 | // not going to get what they want: ObjCInterfaceTypes are | ||||||||
| 5991 | // guaranteed to have no protocols. | ||||||||
| 5992 | enum { | ||||||||
| 5993 | qual_iterator, | ||||||||
| 5994 | qual_begin, | ||||||||
| 5995 | qual_end, | ||||||||
| 5996 | getNumProtocols, | ||||||||
| 5997 | getProtocol | ||||||||
| 5998 | }; | ||||||||
| 5999 | }; | ||||||||
| 6000 | |||||||||
| 6001 | inline ObjCInterfaceDecl *ObjCObjectType::getInterface() const { | ||||||||
| 6002 | QualType baseType = getBaseType(); | ||||||||
| 6003 | while (const auto *ObjT = baseType->getAs<ObjCObjectType>()) { | ||||||||
| 6004 | if (const auto *T = dyn_cast<ObjCInterfaceType>(ObjT)) | ||||||||
| 6005 | return T->getDecl(); | ||||||||
| 6006 | |||||||||
| 6007 | baseType = ObjT->getBaseType(); | ||||||||
| 6008 | } | ||||||||
| 6009 | |||||||||
| 6010 | return nullptr; | ||||||||
| 6011 | } | ||||||||
| 6012 | |||||||||
| 6013 | /// Represents a pointer to an Objective C object. | ||||||||
| 6014 | /// | ||||||||
| 6015 | /// These are constructed from pointer declarators when the pointee type is | ||||||||
| 6016 | /// an ObjCObjectType (or sugar for one). In addition, the 'id' and 'Class' | ||||||||
| 6017 | /// types are typedefs for these, and the protocol-qualified types 'id<P>' | ||||||||
| 6018 | /// and 'Class<P>' are translated into these. | ||||||||
| 6019 | /// | ||||||||
| 6020 | /// Pointers to pointers to Objective C objects are still PointerTypes; | ||||||||
| 6021 | /// only the first level of pointer gets it own type implementation. | ||||||||
| 6022 | class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode { | ||||||||
| 6023 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 6024 | |||||||||
| 6025 | QualType PointeeType; | ||||||||
| 6026 | |||||||||
| 6027 | ObjCObjectPointerType(QualType Canonical, QualType Pointee) | ||||||||
| 6028 | : Type(ObjCObjectPointer, Canonical, Pointee->getDependence()), | ||||||||
| 6029 | PointeeType(Pointee) {} | ||||||||
| 6030 | |||||||||
| 6031 | public: | ||||||||
| 6032 | /// Gets the type pointed to by this ObjC pointer. | ||||||||
| 6033 | /// The result will always be an ObjCObjectType or sugar thereof. | ||||||||
| 6034 | QualType getPointeeType() const { return PointeeType; } | ||||||||
| 6035 | |||||||||
| 6036 | /// Gets the type pointed to by this ObjC pointer. Always returns non-null. | ||||||||
| 6037 | /// | ||||||||
| 6038 | /// This method is equivalent to getPointeeType() except that | ||||||||
| 6039 | /// it discards any typedefs (or other sugar) between this | ||||||||
| 6040 | /// type and the "outermost" object type. So for: | ||||||||
| 6041 | /// \code | ||||||||
| 6042 | /// \@class A; \@protocol P; \@protocol Q; | ||||||||
| 6043 | /// typedef A<P> AP; | ||||||||
| 6044 | /// typedef A A1; | ||||||||
| 6045 | /// typedef A1<P> A1P; | ||||||||
| 6046 | /// typedef A1P<Q> A1PQ; | ||||||||
| 6047 | /// \endcode | ||||||||
| 6048 | /// For 'A*', getObjectType() will return 'A'. | ||||||||
| 6049 | /// For 'A<P>*', getObjectType() will return 'A<P>'. | ||||||||
| 6050 | /// For 'AP*', getObjectType() will return 'A<P>'. | ||||||||
| 6051 | /// For 'A1*', getObjectType() will return 'A'. | ||||||||
| 6052 | /// For 'A1<P>*', getObjectType() will return 'A1<P>'. | ||||||||
| 6053 | /// For 'A1P*', getObjectType() will return 'A1<P>'. | ||||||||
| 6054 | /// For 'A1PQ*', getObjectType() will return 'A1<Q>', because | ||||||||
| 6055 | /// adding protocols to a protocol-qualified base discards the | ||||||||
| 6056 | /// old qualifiers (for now). But if it didn't, getObjectType() | ||||||||
| 6057 | /// would return 'A1P<Q>' (and we'd have to make iterating over | ||||||||
| 6058 | /// qualifiers more complicated). | ||||||||
| 6059 | const ObjCObjectType *getObjectType() const { | ||||||||
| 6060 | return PointeeType->castAs<ObjCObjectType>(); | ||||||||
| 6061 | } | ||||||||
| 6062 | |||||||||
| 6063 | /// If this pointer points to an Objective C | ||||||||
| 6064 | /// \@interface type, gets the type for that interface. Any protocol | ||||||||
| 6065 | /// qualifiers on the interface are ignored. | ||||||||
| 6066 | /// | ||||||||
| 6067 | /// \return null if the base type for this pointer is 'id' or 'Class' | ||||||||
| 6068 | const ObjCInterfaceType *getInterfaceType() const; | ||||||||
| 6069 | |||||||||
| 6070 | /// If this pointer points to an Objective \@interface | ||||||||
| 6071 | /// type, gets the declaration for that interface. | ||||||||
| 6072 | /// | ||||||||
| 6073 | /// \return null if the base type for this pointer is 'id' or 'Class' | ||||||||
| 6074 | ObjCInterfaceDecl *getInterfaceDecl() const { | ||||||||
| 6075 | return getObjectType()->getInterface(); | ||||||||
| 6076 | } | ||||||||
| 6077 | |||||||||
| 6078 | /// True if this is equivalent to the 'id' type, i.e. if | ||||||||
| 6079 | /// its object type is the primitive 'id' type with no protocols. | ||||||||
| 6080 | bool isObjCIdType() const { | ||||||||
| 6081 | return getObjectType()->isObjCUnqualifiedId(); | ||||||||
| 6082 | } | ||||||||
| 6083 | |||||||||
| 6084 | /// True if this is equivalent to the 'Class' type, | ||||||||
| 6085 | /// i.e. if its object tive is the primitive 'Class' type with no protocols. | ||||||||
| 6086 | bool isObjCClassType() const { | ||||||||
| 6087 | return getObjectType()->isObjCUnqualifiedClass(); | ||||||||
| 6088 | } | ||||||||
| 6089 | |||||||||
| 6090 | /// True if this is equivalent to the 'id' or 'Class' type, | ||||||||
| 6091 | bool isObjCIdOrClassType() const { | ||||||||
| 6092 | return getObjectType()->isObjCUnqualifiedIdOrClass(); | ||||||||
| 6093 | } | ||||||||
| 6094 | |||||||||
| 6095 | /// True if this is equivalent to 'id<P>' for some non-empty set of | ||||||||
| 6096 | /// protocols. | ||||||||
| 6097 | bool isObjCQualifiedIdType() const { | ||||||||
| 6098 | return getObjectType()->isObjCQualifiedId(); | ||||||||
| 6099 | } | ||||||||
| 6100 | |||||||||
| 6101 | /// True if this is equivalent to 'Class<P>' for some non-empty set of | ||||||||
| 6102 | /// protocols. | ||||||||
| 6103 | bool isObjCQualifiedClassType() const { | ||||||||
| 6104 | return getObjectType()->isObjCQualifiedClass(); | ||||||||
| 6105 | } | ||||||||
| 6106 | |||||||||
| 6107 | /// Whether this is a "__kindof" type. | ||||||||
| 6108 | bool isKindOfType() const { return getObjectType()->isKindOfType(); } | ||||||||
| 6109 | |||||||||
| 6110 | /// Whether this type is specialized, meaning that it has type arguments. | ||||||||
| 6111 | bool isSpecialized() const { return getObjectType()->isSpecialized(); } | ||||||||
| 6112 | |||||||||
| 6113 | /// Whether this type is specialized, meaning that it has type arguments. | ||||||||
| 6114 | bool isSpecializedAsWritten() const { | ||||||||
| 6115 | return getObjectType()->isSpecializedAsWritten(); | ||||||||
| 6116 | } | ||||||||
| 6117 | |||||||||
| 6118 | /// Whether this type is unspecialized, meaning that is has no type arguments. | ||||||||
| 6119 | bool isUnspecialized() const { return getObjectType()->isUnspecialized(); } | ||||||||
| 6120 | |||||||||
| 6121 | /// Determine whether this object type is "unspecialized" as | ||||||||
| 6122 | /// written, meaning that it has no type arguments. | ||||||||
| 6123 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } | ||||||||
| 6124 | |||||||||
| 6125 | /// Retrieve the type arguments for this type. | ||||||||
| 6126 | ArrayRef<QualType> getTypeArgs() const { | ||||||||
| 6127 | return getObjectType()->getTypeArgs(); | ||||||||
| 6128 | } | ||||||||
| 6129 | |||||||||
| 6130 | /// Retrieve the type arguments for this type. | ||||||||
| 6131 | ArrayRef<QualType> getTypeArgsAsWritten() const { | ||||||||
| 6132 | return getObjectType()->getTypeArgsAsWritten(); | ||||||||
| 6133 | } | ||||||||
| 6134 | |||||||||
| 6135 | /// An iterator over the qualifiers on the object type. Provided | ||||||||
| 6136 | /// for convenience. This will always iterate over the full set of | ||||||||
| 6137 | /// protocols on a type, not just those provided directly. | ||||||||
| 6138 | using qual_iterator = ObjCObjectType::qual_iterator; | ||||||||
| 6139 | using qual_range = llvm::iterator_range<qual_iterator>; | ||||||||
| 6140 | |||||||||
| 6141 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } | ||||||||
| 6142 | |||||||||
| 6143 | qual_iterator qual_begin() const { | ||||||||
| 6144 | return getObjectType()->qual_begin(); | ||||||||
| 6145 | } | ||||||||
| 6146 | |||||||||
| 6147 | qual_iterator qual_end() const { | ||||||||
| 6148 | return getObjectType()->qual_end(); | ||||||||
| 6149 | } | ||||||||
| 6150 | |||||||||
| 6151 | bool qual_empty() const { return getObjectType()->qual_empty(); } | ||||||||
| 6152 | |||||||||
| 6153 | /// Return the number of qualifying protocols on the object type. | ||||||||
| 6154 | unsigned getNumProtocols() const { | ||||||||
| 6155 | return getObjectType()->getNumProtocols(); | ||||||||
| 6156 | } | ||||||||
| 6157 | |||||||||
| 6158 | /// Retrieve a qualifying protocol by index on the object type. | ||||||||
| 6159 | ObjCProtocolDecl *getProtocol(unsigned I) const { | ||||||||
| 6160 | return getObjectType()->getProtocol(I); | ||||||||
| 6161 | } | ||||||||
| 6162 | |||||||||
| 6163 | bool isSugared() const { return false; } | ||||||||
| 6164 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 6165 | |||||||||
| 6166 | /// Retrieve the type of the superclass of this object pointer type. | ||||||||
| 6167 | /// | ||||||||
| 6168 | /// This operation substitutes any type arguments into the | ||||||||
| 6169 | /// superclass of the current class type, potentially producing a | ||||||||
| 6170 | /// pointer to a specialization of the superclass type. Produces a | ||||||||
| 6171 | /// null type if there is no superclass. | ||||||||
| 6172 | QualType getSuperClassType() const; | ||||||||
| 6173 | |||||||||
| 6174 | /// Strip off the Objective-C "kindof" type and (with it) any | ||||||||
| 6175 | /// protocol qualifiers. | ||||||||
| 6176 | const ObjCObjectPointerType *stripObjCKindOfTypeAndQuals( | ||||||||
| 6177 | const ASTContext &ctx) const; | ||||||||
| 6178 | |||||||||
| 6179 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 6180 | Profile(ID, getPointeeType()); | ||||||||
| 6181 | } | ||||||||
| 6182 | |||||||||
| 6183 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { | ||||||||
| 6184 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||
| 6185 | } | ||||||||
| 6186 | |||||||||
| 6187 | static bool classof(const Type *T) { | ||||||||
| 6188 | return T->getTypeClass() == ObjCObjectPointer; | ||||||||
| 6189 | } | ||||||||
| 6190 | }; | ||||||||
| 6191 | |||||||||
| 6192 | class AtomicType : public Type, public llvm::FoldingSetNode { | ||||||||
| 6193 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 6194 | |||||||||
| 6195 | QualType ValueType; | ||||||||
| 6196 | |||||||||
| 6197 | AtomicType(QualType ValTy, QualType Canonical) | ||||||||
| 6198 | : Type(Atomic, Canonical, ValTy->getDependence()), ValueType(ValTy) {} | ||||||||
| 6199 | |||||||||
| 6200 | public: | ||||||||
| 6201 | /// Gets the type contained by this atomic type, i.e. | ||||||||
| 6202 | /// the type returned by performing an atomic load of this atomic type. | ||||||||
| 6203 | QualType getValueType() const { return ValueType; } | ||||||||
| 6204 | |||||||||
| 6205 | bool isSugared() const { return false; } | ||||||||
| 6206 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 6207 | |||||||||
| 6208 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 6209 | Profile(ID, getValueType()); | ||||||||
| 6210 | } | ||||||||
| 6211 | |||||||||
| 6212 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { | ||||||||
| 6213 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||
| 6214 | } | ||||||||
| 6215 | |||||||||
| 6216 | static bool classof(const Type *T) { | ||||||||
| 6217 | return T->getTypeClass() == Atomic; | ||||||||
| 6218 | } | ||||||||
| 6219 | }; | ||||||||
| 6220 | |||||||||
| 6221 | /// PipeType - OpenCL20. | ||||||||
| 6222 | class PipeType : public Type, public llvm::FoldingSetNode { | ||||||||
| 6223 | friend class ASTContext; // ASTContext creates these. | ||||||||
| 6224 | |||||||||
| 6225 | QualType ElementType; | ||||||||
| 6226 | bool isRead; | ||||||||
| 6227 | |||||||||
| 6228 | PipeType(QualType elemType, QualType CanonicalPtr, bool isRead) | ||||||||
| 6229 | : Type(Pipe, CanonicalPtr, elemType->getDependence()), | ||||||||
| 6230 | ElementType(elemType), isRead(isRead) {} | ||||||||
| 6231 | |||||||||
| 6232 | public: | ||||||||
| 6233 | QualType getElementType() const { return ElementType; } | ||||||||
| 6234 | |||||||||
| 6235 | bool isSugared() const { return false; } | ||||||||
| 6236 | |||||||||
| 6237 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 6238 | |||||||||
| 6239 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 6240 | Profile(ID, getElementType(), isReadOnly()); | ||||||||
| 6241 | } | ||||||||
| 6242 | |||||||||
| 6243 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T, bool isRead) { | ||||||||
| 6244 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||
| 6245 | ID.AddBoolean(isRead); | ||||||||
| 6246 | } | ||||||||
| 6247 | |||||||||
| 6248 | static bool classof(const Type *T) { | ||||||||
| 6249 | return T->getTypeClass() == Pipe; | ||||||||
| 6250 | } | ||||||||
| 6251 | |||||||||
| 6252 | bool isReadOnly() const { return isRead; } | ||||||||
| 6253 | }; | ||||||||
| 6254 | |||||||||
| 6255 | /// A fixed int type of a specified bitwidth. | ||||||||
| 6256 | class ExtIntType final : public Type, public llvm::FoldingSetNode { | ||||||||
| 6257 | friend class ASTContext; | ||||||||
| 6258 | unsigned IsUnsigned : 1; | ||||||||
| 6259 | unsigned NumBits : 24; | ||||||||
| 6260 | |||||||||
| 6261 | protected: | ||||||||
| 6262 | ExtIntType(bool isUnsigned, unsigned NumBits); | ||||||||
| 6263 | |||||||||
| 6264 | public: | ||||||||
| 6265 | bool isUnsigned() const { return IsUnsigned; } | ||||||||
| 6266 | bool isSigned() const { return !IsUnsigned; } | ||||||||
| 6267 | unsigned getNumBits() const { return NumBits; } | ||||||||
| 6268 | |||||||||
| 6269 | bool isSugared() const { return false; } | ||||||||
| 6270 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 6271 | |||||||||
| 6272 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 6273 | Profile(ID, isUnsigned(), getNumBits()); | ||||||||
| 6274 | } | ||||||||
| 6275 | |||||||||
| 6276 | static void Profile(llvm::FoldingSetNodeID &ID, bool IsUnsigned, | ||||||||
| 6277 | unsigned NumBits) { | ||||||||
| 6278 | ID.AddBoolean(IsUnsigned); | ||||||||
| 6279 | ID.AddInteger(NumBits); | ||||||||
| 6280 | } | ||||||||
| 6281 | |||||||||
| 6282 | static bool classof(const Type *T) { return T->getTypeClass() == ExtInt; } | ||||||||
| 6283 | }; | ||||||||
| 6284 | |||||||||
| 6285 | class DependentExtIntType final : public Type, public llvm::FoldingSetNode { | ||||||||
| 6286 | friend class ASTContext; | ||||||||
| 6287 | const ASTContext &Context; | ||||||||
| 6288 | llvm::PointerIntPair<Expr*, 1, bool> ExprAndUnsigned; | ||||||||
| 6289 | |||||||||
| 6290 | protected: | ||||||||
| 6291 | DependentExtIntType(const ASTContext &Context, bool IsUnsigned, | ||||||||
| 6292 | Expr *NumBits); | ||||||||
| 6293 | |||||||||
| 6294 | public: | ||||||||
| 6295 | bool isUnsigned() const; | ||||||||
| 6296 | bool isSigned() const { return !isUnsigned(); } | ||||||||
| 6297 | Expr *getNumBitsExpr() const; | ||||||||
| 6298 | |||||||||
| 6299 | bool isSugared() const { return false; } | ||||||||
| 6300 | QualType desugar() const { return QualType(this, 0); } | ||||||||
| 6301 | |||||||||
| 6302 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||
| 6303 | Profile(ID, Context, isUnsigned(), getNumBitsExpr()); | ||||||||
| 6304 | } | ||||||||
| 6305 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||
| 6306 | bool IsUnsigned, Expr *NumBitsExpr); | ||||||||
| 6307 | |||||||||
| 6308 | static bool classof(const Type *T) { | ||||||||
| 6309 | return T->getTypeClass() == DependentExtInt; | ||||||||
| 6310 | } | ||||||||
| 6311 | }; | ||||||||
| 6312 | |||||||||
| 6313 | /// A qualifier set is used to build a set of qualifiers. | ||||||||
| 6314 | class QualifierCollector : public Qualifiers { | ||||||||
| 6315 | public: | ||||||||
| 6316 | QualifierCollector(Qualifiers Qs = Qualifiers()) : Qualifiers(Qs) {} | ||||||||
| 6317 | |||||||||
| 6318 | /// Collect any qualifiers on the given type and return an | ||||||||
| 6319 | /// unqualified type. The qualifiers are assumed to be consistent | ||||||||
| 6320 | /// with those already in the type. | ||||||||
| 6321 | const Type *strip(QualType type) { | ||||||||
| 6322 | addFastQualifiers(type.getLocalFastQualifiers()); | ||||||||
| 6323 | if (!type.hasLocalNonFastQualifiers()) | ||||||||
| 6324 | return type.getTypePtrUnsafe(); | ||||||||
| 6325 | |||||||||
| 6326 | const ExtQuals *extQuals = type.getExtQualsUnsafe(); | ||||||||
| 6327 | addConsistentQualifiers(extQuals->getQualifiers()); | ||||||||
| 6328 | return extQuals->getBaseType(); | ||||||||
| 6329 | } | ||||||||
| 6330 | |||||||||
| 6331 | /// Apply the collected qualifiers to the given type. | ||||||||
| 6332 | QualType apply(const ASTContext &Context, QualType QT) const; | ||||||||
| 6333 | |||||||||
| 6334 | /// Apply the collected qualifiers to the given type. | ||||||||
| 6335 | QualType apply(const ASTContext &Context, const Type* T) const; | ||||||||
| 6336 | }; | ||||||||
| 6337 | |||||||||
| 6338 | /// A container of type source information. | ||||||||
| 6339 | /// | ||||||||
| 6340 | /// A client can read the relevant info using TypeLoc wrappers, e.g: | ||||||||
| 6341 | /// @code | ||||||||
| 6342 | /// TypeLoc TL = TypeSourceInfo->getTypeLoc(); | ||||||||
| 6343 | /// TL.getBeginLoc().print(OS, SrcMgr); | ||||||||
| 6344 | /// @endcode | ||||||||
| 6345 | class alignas(8) TypeSourceInfo { | ||||||||
| 6346 | // Contains a memory block after the class, used for type source information, | ||||||||
| 6347 | // allocated by ASTContext. | ||||||||
| 6348 | friend class ASTContext; | ||||||||
| 6349 | |||||||||
| 6350 | QualType Ty; | ||||||||
| 6351 | |||||||||
| 6352 | TypeSourceInfo(QualType ty) : Ty(ty) {} | ||||||||
| 6353 | |||||||||
| 6354 | public: | ||||||||
| 6355 | /// Return the type wrapped by this type source info. | ||||||||
| 6356 | QualType getType() const { return Ty; } | ||||||||
| 6357 | |||||||||
| 6358 | /// Return the TypeLoc wrapper for the type source info. | ||||||||
| 6359 | TypeLoc getTypeLoc() const; // implemented in TypeLoc.h | ||||||||
| 6360 | |||||||||
| 6361 | /// Override the type stored in this TypeSourceInfo. Use with caution! | ||||||||
| 6362 | void overrideType(QualType T) { Ty = T; } | ||||||||
| 6363 | }; | ||||||||
| 6364 | |||||||||
| 6365 | // Inline function definitions. | ||||||||
| 6366 | |||||||||
| 6367 | inline SplitQualType SplitQualType::getSingleStepDesugaredType() const { | ||||||||
| 6368 | SplitQualType desugar = | ||||||||
| 6369 | Ty->getLocallyUnqualifiedSingleStepDesugaredType().split(); | ||||||||
| 6370 | desugar.Quals.addConsistentQualifiers(Quals); | ||||||||
| 6371 | return desugar; | ||||||||
| 6372 | } | ||||||||
| 6373 | |||||||||
| 6374 | inline const Type *QualType::getTypePtr() const { | ||||||||
| 6375 | return getCommonPtr()->BaseType; | ||||||||
| 6376 | } | ||||||||
| 6377 | |||||||||
| 6378 | inline const Type *QualType::getTypePtrOrNull() const { | ||||||||
| 6379 | return (isNull() ? nullptr : getCommonPtr()->BaseType); | ||||||||
| 6380 | } | ||||||||
| 6381 | |||||||||
| 6382 | inline SplitQualType QualType::split() const { | ||||||||
| 6383 | if (!hasLocalNonFastQualifiers()) | ||||||||
| 6384 | return SplitQualType(getTypePtrUnsafe(), | ||||||||
| 6385 | Qualifiers::fromFastMask(getLocalFastQualifiers())); | ||||||||
| 6386 | |||||||||
| 6387 | const ExtQuals *eq = getExtQualsUnsafe(); | ||||||||
| 6388 | Qualifiers qs = eq->getQualifiers(); | ||||||||
| 6389 | qs.addFastQualifiers(getLocalFastQualifiers()); | ||||||||
| 6390 | return SplitQualType(eq->getBaseType(), qs); | ||||||||
| 6391 | } | ||||||||
| 6392 | |||||||||
| 6393 | inline Qualifiers QualType::getLocalQualifiers() const { | ||||||||
| 6394 | Qualifiers Quals; | ||||||||
| 6395 | if (hasLocalNonFastQualifiers()) | ||||||||
| 6396 | Quals = getExtQualsUnsafe()->getQualifiers(); | ||||||||
| 6397 | Quals.addFastQualifiers(getLocalFastQualifiers()); | ||||||||
| 6398 | return Quals; | ||||||||
| 6399 | } | ||||||||
| 6400 | |||||||||
| 6401 | inline Qualifiers QualType::getQualifiers() const { | ||||||||
| 6402 | Qualifiers quals = getCommonPtr()->CanonicalType.getLocalQualifiers(); | ||||||||
| 6403 | quals.addFastQualifiers(getLocalFastQualifiers()); | ||||||||
| 6404 | return quals; | ||||||||
| 6405 | } | ||||||||
| 6406 | |||||||||
| 6407 | inline unsigned QualType::getCVRQualifiers() const { | ||||||||
| 6408 | unsigned cvr = getCommonPtr()->CanonicalType.getLocalCVRQualifiers(); | ||||||||
| 6409 | cvr |= getLocalCVRQualifiers(); | ||||||||
| 6410 | return cvr; | ||||||||
| 6411 | } | ||||||||
| 6412 | |||||||||
| 6413 | inline QualType QualType::getCanonicalType() const { | ||||||||
| 6414 | QualType canon = getCommonPtr()->CanonicalType; | ||||||||
| 6415 | return canon.withFastQualifiers(getLocalFastQualifiers()); | ||||||||
| 6416 | } | ||||||||
| 6417 | |||||||||
| 6418 | inline bool QualType::isCanonical() const { | ||||||||
| 6419 | return getTypePtr()->isCanonicalUnqualified(); | ||||||||
| 6420 | } | ||||||||
| 6421 | |||||||||
| 6422 | inline bool QualType::isCanonicalAsParam() const { | ||||||||
| 6423 | if (!isCanonical()) return false; | ||||||||
| 6424 | if (hasLocalQualifiers()) return false; | ||||||||
| 6425 | |||||||||
| 6426 | const Type *T = getTypePtr(); | ||||||||
| 6427 | if (T->isVariablyModifiedType() && T->hasSizedVLAType()) | ||||||||
| 6428 | return false; | ||||||||
| 6429 | |||||||||
| 6430 | return !isa<FunctionType>(T) && !isa<ArrayType>(T); | ||||||||
| 6431 | } | ||||||||
| 6432 | |||||||||
| 6433 | inline bool QualType::isConstQualified() const { | ||||||||
| 6434 | return isLocalConstQualified() || | ||||||||
| 6435 | getCommonPtr()->CanonicalType.isLocalConstQualified(); | ||||||||
| 6436 | } | ||||||||
| 6437 | |||||||||
| 6438 | inline bool QualType::isRestrictQualified() const { | ||||||||
| 6439 | return isLocalRestrictQualified() || | ||||||||
| 6440 | getCommonPtr()->CanonicalType.isLocalRestrictQualified(); | ||||||||
| 6441 | } | ||||||||
| 6442 | |||||||||
| 6443 | |||||||||
| 6444 | inline bool QualType::isVolatileQualified() const { | ||||||||
| 6445 | return isLocalVolatileQualified() || | ||||||||
| 6446 | getCommonPtr()->CanonicalType.isLocalVolatileQualified(); | ||||||||
| 6447 | } | ||||||||
| 6448 | |||||||||
| 6449 | inline bool QualType::hasQualifiers() const { | ||||||||
| 6450 | return hasLocalQualifiers() || | ||||||||
| 6451 | getCommonPtr()->CanonicalType.hasLocalQualifiers(); | ||||||||
| 6452 | } | ||||||||
| 6453 | |||||||||
| 6454 | inline QualType QualType::getUnqualifiedType() const { | ||||||||
| 6455 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) | ||||||||
| 6456 | return QualType(getTypePtr(), 0); | ||||||||
| 6457 | |||||||||
| 6458 | return QualType(getSplitUnqualifiedTypeImpl(*this).Ty, 0); | ||||||||
| 6459 | } | ||||||||
| 6460 | |||||||||
| 6461 | inline SplitQualType QualType::getSplitUnqualifiedType() const { | ||||||||
| 6462 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) | ||||||||
| 6463 | return split(); | ||||||||
| 6464 | |||||||||
| 6465 | return getSplitUnqualifiedTypeImpl(*this); | ||||||||
| 6466 | } | ||||||||
| 6467 | |||||||||
| 6468 | inline void QualType::removeLocalConst() { | ||||||||
| 6469 | removeLocalFastQualifiers(Qualifiers::Const); | ||||||||
| 6470 | } | ||||||||
| 6471 | |||||||||
| 6472 | inline void QualType::removeLocalRestrict() { | ||||||||
| 6473 | removeLocalFastQualifiers(Qualifiers::Restrict); | ||||||||
| 6474 | } | ||||||||
| 6475 | |||||||||
| 6476 | inline void QualType::removeLocalVolatile() { | ||||||||
| 6477 | removeLocalFastQualifiers(Qualifiers::Volatile); | ||||||||
| 6478 | } | ||||||||
| 6479 | |||||||||
| 6480 | inline void QualType::removeLocalCVRQualifiers(unsigned Mask) { | ||||||||
| 6481 | assert(!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits")((!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::CVRMask) && \"mask has non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 6481, __PRETTY_FUNCTION__)); | ||||||||
| 6482 | static_assert((int)Qualifiers::CVRMask == (int)Qualifiers::FastMask, | ||||||||
| 6483 | "Fast bits differ from CVR bits!"); | ||||||||
| 6484 | |||||||||
| 6485 | // Fast path: we don't need to touch the slow qualifiers. | ||||||||
| 6486 | removeLocalFastQualifiers(Mask); | ||||||||
| 6487 | } | ||||||||
| 6488 | |||||||||
| 6489 | /// Check if this type has any address space qualifier. | ||||||||
| 6490 | inline bool QualType::hasAddressSpace() const { | ||||||||
| 6491 | return getQualifiers().hasAddressSpace(); | ||||||||
| 6492 | } | ||||||||
| 6493 | |||||||||
| 6494 | /// Return the address space of this type. | ||||||||
| 6495 | inline LangAS QualType::getAddressSpace() const { | ||||||||
| 6496 | return getQualifiers().getAddressSpace(); | ||||||||
| 6497 | } | ||||||||
| 6498 | |||||||||
| 6499 | /// Return the gc attribute of this type. | ||||||||
| 6500 | inline Qualifiers::GC QualType::getObjCGCAttr() const { | ||||||||
| 6501 | return getQualifiers().getObjCGCAttr(); | ||||||||
| 6502 | } | ||||||||
| 6503 | |||||||||
| 6504 | inline bool QualType::hasNonTrivialToPrimitiveDefaultInitializeCUnion() const { | ||||||||
| 6505 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||
| 6506 | return hasNonTrivialToPrimitiveDefaultInitializeCUnion(RD); | ||||||||
| 6507 | return false; | ||||||||
| 6508 | } | ||||||||
| 6509 | |||||||||
| 6510 | inline bool QualType::hasNonTrivialToPrimitiveDestructCUnion() const { | ||||||||
| 6511 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||
| 6512 | return hasNonTrivialToPrimitiveDestructCUnion(RD); | ||||||||
| 6513 | return false; | ||||||||
| 6514 | } | ||||||||
| 6515 | |||||||||
| 6516 | inline bool QualType::hasNonTrivialToPrimitiveCopyCUnion() const { | ||||||||
| 6517 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||
| 6518 | return hasNonTrivialToPrimitiveCopyCUnion(RD); | ||||||||
| 6519 | return false; | ||||||||
| 6520 | } | ||||||||
| 6521 | |||||||||
| 6522 | inline FunctionType::ExtInfo getFunctionExtInfo(const Type &t) { | ||||||||
| 6523 | if (const auto *PT = t.getAs<PointerType>()) { | ||||||||
| 6524 | if (const auto *FT = PT->getPointeeType()->getAs<FunctionType>()) | ||||||||
| 6525 | return FT->getExtInfo(); | ||||||||
| 6526 | } else if (const auto *FT = t.getAs<FunctionType>()) | ||||||||
| 6527 | return FT->getExtInfo(); | ||||||||
| 6528 | |||||||||
| 6529 | return FunctionType::ExtInfo(); | ||||||||
| 6530 | } | ||||||||
| 6531 | |||||||||
| 6532 | inline FunctionType::ExtInfo getFunctionExtInfo(QualType t) { | ||||||||
| 6533 | return getFunctionExtInfo(*t); | ||||||||
| 6534 | } | ||||||||
| 6535 | |||||||||
| 6536 | /// Determine whether this type is more | ||||||||
| 6537 | /// qualified than the Other type. For example, "const volatile int" | ||||||||
| 6538 | /// is more qualified than "const int", "volatile int", and | ||||||||
| 6539 | /// "int". However, it is not more qualified than "const volatile | ||||||||
| 6540 | /// int". | ||||||||
| 6541 | inline bool QualType::isMoreQualifiedThan(QualType other) const { | ||||||||
| 6542 | Qualifiers MyQuals = getQualifiers(); | ||||||||
| 6543 | Qualifiers OtherQuals = other.getQualifiers(); | ||||||||
| 6544 | return (MyQuals != OtherQuals && MyQuals.compatiblyIncludes(OtherQuals)); | ||||||||
| 6545 | } | ||||||||
| 6546 | |||||||||
| 6547 | /// Determine whether this type is at last | ||||||||
| 6548 | /// as qualified as the Other type. For example, "const volatile | ||||||||
| 6549 | /// int" is at least as qualified as "const int", "volatile int", | ||||||||
| 6550 | /// "int", and "const volatile int". | ||||||||
| 6551 | inline bool QualType::isAtLeastAsQualifiedAs(QualType other) const { | ||||||||
| 6552 | Qualifiers OtherQuals = other.getQualifiers(); | ||||||||
| 6553 | |||||||||
| 6554 | // Ignore __unaligned qualifier if this type is a void. | ||||||||
| 6555 | if (getUnqualifiedType()->isVoidType()) | ||||||||
| 6556 | OtherQuals.removeUnaligned(); | ||||||||
| 6557 | |||||||||
| 6558 | return getQualifiers().compatiblyIncludes(OtherQuals); | ||||||||
| 6559 | } | ||||||||
| 6560 | |||||||||
| 6561 | /// If Type is a reference type (e.g., const | ||||||||
| 6562 | /// int&), returns the type that the reference refers to ("const | ||||||||
| 6563 | /// int"). Otherwise, returns the type itself. This routine is used | ||||||||
| 6564 | /// throughout Sema to implement C++ 5p6: | ||||||||
| 6565 | /// | ||||||||
| 6566 | /// If an expression initially has the type "reference to T" (8.3.2, | ||||||||
| 6567 | /// 8.5.3), the type is adjusted to "T" prior to any further | ||||||||
| 6568 | /// analysis, the expression designates the object or function | ||||||||
| 6569 | /// denoted by the reference, and the expression is an lvalue. | ||||||||
| 6570 | inline QualType QualType::getNonReferenceType() const { | ||||||||
| 6571 | if (const auto *RefType = (*this)->getAs<ReferenceType>()) | ||||||||
| 6572 | return RefType->getPointeeType(); | ||||||||
| 6573 | else | ||||||||
| 6574 | return *this; | ||||||||
| 6575 | } | ||||||||
| 6576 | |||||||||
| 6577 | inline bool QualType::isCForbiddenLValueType() const { | ||||||||
| 6578 | return ((getTypePtr()->isVoidType() && !hasQualifiers()) || | ||||||||
| 6579 | getTypePtr()->isFunctionType()); | ||||||||
| 6580 | } | ||||||||
| 6581 | |||||||||
| 6582 | /// Tests whether the type is categorized as a fundamental type. | ||||||||
| 6583 | /// | ||||||||
| 6584 | /// \returns True for types specified in C++0x [basic.fundamental]. | ||||||||
| 6585 | inline bool Type::isFundamentalType() const { | ||||||||
| 6586 | return isVoidType() || | ||||||||
| 6587 | isNullPtrType() || | ||||||||
| 6588 | // FIXME: It's really annoying that we don't have an | ||||||||
| 6589 | // 'isArithmeticType()' which agrees with the standard definition. | ||||||||
| 6590 | (isArithmeticType() && !isEnumeralType()); | ||||||||
| 6591 | } | ||||||||
| 6592 | |||||||||
| 6593 | /// Tests whether the type is categorized as a compound type. | ||||||||
| 6594 | /// | ||||||||
| 6595 | /// \returns True for types specified in C++0x [basic.compound]. | ||||||||
| 6596 | inline bool Type::isCompoundType() const { | ||||||||
| 6597 | // C++0x [basic.compound]p1: | ||||||||
| 6598 | // Compound types can be constructed in the following ways: | ||||||||
| 6599 | // -- arrays of objects of a given type [...]; | ||||||||
| 6600 | return isArrayType() || | ||||||||
| 6601 | // -- functions, which have parameters of given types [...]; | ||||||||
| 6602 | isFunctionType() || | ||||||||
| 6603 | // -- pointers to void or objects or functions [...]; | ||||||||
| 6604 | isPointerType() || | ||||||||
| 6605 | // -- references to objects or functions of a given type. [...] | ||||||||
| 6606 | isReferenceType() || | ||||||||
| 6607 | // -- classes containing a sequence of objects of various types, [...]; | ||||||||
| 6608 | isRecordType() || | ||||||||
| 6609 | // -- unions, which are classes capable of containing objects of different | ||||||||
| 6610 | // types at different times; | ||||||||
| 6611 | isUnionType() || | ||||||||
| 6612 | // -- enumerations, which comprise a set of named constant values. [...]; | ||||||||
| 6613 | isEnumeralType() || | ||||||||
| 6614 | // -- pointers to non-static class members, [...]. | ||||||||
| 6615 | isMemberPointerType(); | ||||||||
| 6616 | } | ||||||||
| 6617 | |||||||||
| 6618 | inline bool Type::isFunctionType() const { | ||||||||
| 6619 | return isa<FunctionType>(CanonicalType); | ||||||||
| 6620 | } | ||||||||
| 6621 | |||||||||
| 6622 | inline bool Type::isPointerType() const { | ||||||||
| 6623 | return isa<PointerType>(CanonicalType); | ||||||||
| 6624 | } | ||||||||
| 6625 | |||||||||
| 6626 | inline bool Type::isAnyPointerType() const { | ||||||||
| 6627 | return isPointerType() || isObjCObjectPointerType(); | ||||||||
| 6628 | } | ||||||||
| 6629 | |||||||||
| 6630 | inline bool Type::isBlockPointerType() const { | ||||||||
| 6631 | return isa<BlockPointerType>(CanonicalType); | ||||||||
| 6632 | } | ||||||||
| 6633 | |||||||||
| 6634 | inline bool Type::isReferenceType() const { | ||||||||
| 6635 | return isa<ReferenceType>(CanonicalType); | ||||||||
| 6636 | } | ||||||||
| 6637 | |||||||||
| 6638 | inline bool Type::isLValueReferenceType() const { | ||||||||
| 6639 | return isa<LValueReferenceType>(CanonicalType); | ||||||||
| 6640 | } | ||||||||
| 6641 | |||||||||
| 6642 | inline bool Type::isRValueReferenceType() const { | ||||||||
| 6643 | return isa<RValueReferenceType>(CanonicalType); | ||||||||
| 6644 | } | ||||||||
| 6645 | |||||||||
| 6646 | inline bool Type::isObjectPointerType() const { | ||||||||
| 6647 | // Note: an "object pointer type" is not the same thing as a pointer to an | ||||||||
| 6648 | // object type; rather, it is a pointer to an object type or a pointer to cv | ||||||||
| 6649 | // void. | ||||||||
| 6650 | if (const auto *T = getAs<PointerType>()) | ||||||||
| 6651 | return !T->getPointeeType()->isFunctionType(); | ||||||||
| 6652 | else | ||||||||
| 6653 | return false; | ||||||||
| 6654 | } | ||||||||
| 6655 | |||||||||
| 6656 | inline bool Type::isFunctionPointerType() const { | ||||||||
| 6657 | if (const auto *T = getAs<PointerType>()) | ||||||||
| 6658 | return T->getPointeeType()->isFunctionType(); | ||||||||
| 6659 | else | ||||||||
| 6660 | return false; | ||||||||
| 6661 | } | ||||||||
| 6662 | |||||||||
| 6663 | inline bool Type::isFunctionReferenceType() const { | ||||||||
| 6664 | if (const auto *T = getAs<ReferenceType>()) | ||||||||
| 6665 | return T->getPointeeType()->isFunctionType(); | ||||||||
| 6666 | else | ||||||||
| 6667 | return false; | ||||||||
| 6668 | } | ||||||||
| 6669 | |||||||||
| 6670 | inline bool Type::isMemberPointerType() const { | ||||||||
| 6671 | return isa<MemberPointerType>(CanonicalType); | ||||||||
| 6672 | } | ||||||||
| 6673 | |||||||||
| 6674 | inline bool Type::isMemberFunctionPointerType() const { | ||||||||
| 6675 | if (const auto *T = getAs<MemberPointerType>()) | ||||||||
| 6676 | return T->isMemberFunctionPointer(); | ||||||||
| 6677 | else | ||||||||
| 6678 | return false; | ||||||||
| 6679 | } | ||||||||
| 6680 | |||||||||
| 6681 | inline bool Type::isMemberDataPointerType() const { | ||||||||
| 6682 | if (const auto *T = getAs<MemberPointerType>()) | ||||||||
| 6683 | return T->isMemberDataPointer(); | ||||||||
| 6684 | else | ||||||||
| 6685 | return false; | ||||||||
| 6686 | } | ||||||||
| 6687 | |||||||||
| 6688 | inline bool Type::isArrayType() const { | ||||||||
| 6689 | return isa<ArrayType>(CanonicalType); | ||||||||
| 6690 | } | ||||||||
| 6691 | |||||||||
| 6692 | inline bool Type::isConstantArrayType() const { | ||||||||
| 6693 | return isa<ConstantArrayType>(CanonicalType); | ||||||||
| 6694 | } | ||||||||
| 6695 | |||||||||
| 6696 | inline bool Type::isIncompleteArrayType() const { | ||||||||
| 6697 | return isa<IncompleteArrayType>(CanonicalType); | ||||||||
| 6698 | } | ||||||||
| 6699 | |||||||||
| 6700 | inline bool Type::isVariableArrayType() const { | ||||||||
| 6701 | return isa<VariableArrayType>(CanonicalType); | ||||||||
| 6702 | } | ||||||||
| 6703 | |||||||||
| 6704 | inline bool Type::isDependentSizedArrayType() const { | ||||||||
| 6705 | return isa<DependentSizedArrayType>(CanonicalType); | ||||||||
| 6706 | } | ||||||||
| 6707 | |||||||||
| 6708 | inline bool Type::isBuiltinType() const { | ||||||||
| 6709 | return isa<BuiltinType>(CanonicalType); | ||||||||
| 6710 | } | ||||||||
| 6711 | |||||||||
| 6712 | inline bool Type::isRecordType() const { | ||||||||
| 6713 | return isa<RecordType>(CanonicalType); | ||||||||
| 6714 | } | ||||||||
| 6715 | |||||||||
| 6716 | inline bool Type::isEnumeralType() const { | ||||||||
| 6717 | return isa<EnumType>(CanonicalType); | ||||||||
| 6718 | } | ||||||||
| 6719 | |||||||||
| 6720 | inline bool Type::isAnyComplexType() const { | ||||||||
| 6721 | return isa<ComplexType>(CanonicalType); | ||||||||
| 6722 | } | ||||||||
| 6723 | |||||||||
| 6724 | inline bool Type::isVectorType() const { | ||||||||
| 6725 | return isa<VectorType>(CanonicalType); | ||||||||
| 6726 | } | ||||||||
| 6727 | |||||||||
| 6728 | inline bool Type::isExtVectorType() const { | ||||||||
| 6729 | return isa<ExtVectorType>(CanonicalType); | ||||||||
| 6730 | } | ||||||||
| 6731 | |||||||||
| 6732 | inline bool Type::isMatrixType() const { | ||||||||
| 6733 | return isa<MatrixType>(CanonicalType); | ||||||||
| 6734 | } | ||||||||
| 6735 | |||||||||
| 6736 | inline bool Type::isConstantMatrixType() const { | ||||||||
| 6737 | return isa<ConstantMatrixType>(CanonicalType); | ||||||||
| 6738 | } | ||||||||
| 6739 | |||||||||
| 6740 | inline bool Type::isDependentAddressSpaceType() const { | ||||||||
| 6741 | return isa<DependentAddressSpaceType>(CanonicalType); | ||||||||
| 6742 | } | ||||||||
| 6743 | |||||||||
| 6744 | inline bool Type::isObjCObjectPointerType() const { | ||||||||
| 6745 | return isa<ObjCObjectPointerType>(CanonicalType); | ||||||||
| 6746 | } | ||||||||
| 6747 | |||||||||
| 6748 | inline bool Type::isObjCObjectType() const { | ||||||||
| 6749 | return isa<ObjCObjectType>(CanonicalType); | ||||||||
| 6750 | } | ||||||||
| 6751 | |||||||||
| 6752 | inline bool Type::isObjCObjectOrInterfaceType() const { | ||||||||
| 6753 | return isa<ObjCInterfaceType>(CanonicalType) || | ||||||||
| 6754 | isa<ObjCObjectType>(CanonicalType); | ||||||||
| 6755 | } | ||||||||
| 6756 | |||||||||
| 6757 | inline bool Type::isAtomicType() const { | ||||||||
| 6758 | return isa<AtomicType>(CanonicalType); | ||||||||
| 6759 | } | ||||||||
| 6760 | |||||||||
| 6761 | inline bool Type::isUndeducedAutoType() const { | ||||||||
| 6762 | return isa<AutoType>(CanonicalType); | ||||||||
| 6763 | } | ||||||||
| 6764 | |||||||||
| 6765 | inline bool Type::isObjCQualifiedIdType() const { | ||||||||
| 6766 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
| 6767 | return OPT->isObjCQualifiedIdType(); | ||||||||
| 6768 | return false; | ||||||||
| 6769 | } | ||||||||
| 6770 | |||||||||
| 6771 | inline bool Type::isObjCQualifiedClassType() const { | ||||||||
| 6772 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
| 6773 | return OPT->isObjCQualifiedClassType(); | ||||||||
| 6774 | return false; | ||||||||
| 6775 | } | ||||||||
| 6776 | |||||||||
| 6777 | inline bool Type::isObjCIdType() const { | ||||||||
| 6778 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
| 6779 | return OPT->isObjCIdType(); | ||||||||
| 6780 | return false; | ||||||||
| 6781 | } | ||||||||
| 6782 | |||||||||
| 6783 | inline bool Type::isObjCClassType() const { | ||||||||
| 6784 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||
| 6785 | return OPT->isObjCClassType(); | ||||||||
| 6786 | return false; | ||||||||
| 6787 | } | ||||||||
| 6788 | |||||||||
| 6789 | inline bool Type::isObjCSelType() const { | ||||||||
| 6790 | if (const auto *OPT = getAs<PointerType>()) | ||||||||
| 6791 | return OPT->getPointeeType()->isSpecificBuiltinType(BuiltinType::ObjCSel); | ||||||||
| 6792 | return false; | ||||||||
| 6793 | } | ||||||||
| 6794 | |||||||||
| 6795 | inline bool Type::isObjCBuiltinType() const { | ||||||||
| 6796 | return isObjCIdType() || isObjCClassType() || isObjCSelType(); | ||||||||
| 6797 | } | ||||||||
| 6798 | |||||||||
| 6799 | inline bool Type::isDecltypeType() const { | ||||||||
| 6800 | return isa<DecltypeType>(this); | ||||||||
| 6801 | } | ||||||||
| 6802 | |||||||||
| 6803 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||
| 6804 | inline bool Type::is##Id##Type() const { \ | ||||||||
| 6805 | return isSpecificBuiltinType(BuiltinType::Id); \ | ||||||||
| 6806 | } | ||||||||
| 6807 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
| 6808 | |||||||||
| 6809 | inline bool Type::isSamplerT() const { | ||||||||
| 6810 | return isSpecificBuiltinType(BuiltinType::OCLSampler); | ||||||||
| 6811 | } | ||||||||
| 6812 | |||||||||
| 6813 | inline bool Type::isEventT() const { | ||||||||
| 6814 | return isSpecificBuiltinType(BuiltinType::OCLEvent); | ||||||||
| 6815 | } | ||||||||
| 6816 | |||||||||
| 6817 | inline bool Type::isClkEventT() const { | ||||||||
| 6818 | return isSpecificBuiltinType(BuiltinType::OCLClkEvent); | ||||||||
| 6819 | } | ||||||||
| 6820 | |||||||||
| 6821 | inline bool Type::isQueueT() const { | ||||||||
| 6822 | return isSpecificBuiltinType(BuiltinType::OCLQueue); | ||||||||
| 6823 | } | ||||||||
| 6824 | |||||||||
| 6825 | inline bool Type::isReserveIDT() const { | ||||||||
| 6826 | return isSpecificBuiltinType(BuiltinType::OCLReserveID); | ||||||||
| 6827 | } | ||||||||
| 6828 | |||||||||
| 6829 | inline bool Type::isImageType() const { | ||||||||
| 6830 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) is##Id##Type() || | ||||||||
| 6831 | return | ||||||||
| 6832 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||
| 6833 | false; // end boolean or operation | ||||||||
| 6834 | } | ||||||||
| 6835 | |||||||||
| 6836 | inline bool Type::isPipeType() const { | ||||||||
| 6837 | return isa<PipeType>(CanonicalType); | ||||||||
| 6838 | } | ||||||||
| 6839 | |||||||||
| 6840 | inline bool Type::isExtIntType() const { | ||||||||
| 6841 | return isa<ExtIntType>(CanonicalType); | ||||||||
| 6842 | } | ||||||||
| 6843 | |||||||||
| 6844 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||
| 6845 | inline bool Type::is##Id##Type() const { \ | ||||||||
| 6846 | return isSpecificBuiltinType(BuiltinType::Id); \ | ||||||||
| 6847 | } | ||||||||
| 6848 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 6849 | |||||||||
| 6850 | inline bool Type::isOCLIntelSubgroupAVCType() const { | ||||||||
| 6851 | #define INTEL_SUBGROUP_AVC_TYPE(ExtType, Id) \ | ||||||||
| 6852 | isOCLIntelSubgroupAVC##Id##Type() || | ||||||||
| 6853 | return | ||||||||
| 6854 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 6855 | false; // end of boolean or operation | ||||||||
| 6856 | } | ||||||||
| 6857 | |||||||||
| 6858 | inline bool Type::isOCLExtOpaqueType() const { | ||||||||
| 6859 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) is##Id##Type() || | ||||||||
| 6860 | return | ||||||||
| 6861 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||
| 6862 | false; // end of boolean or operation | ||||||||
| 6863 | } | ||||||||
| 6864 | |||||||||
| 6865 | inline bool Type::isOpenCLSpecificType() const { | ||||||||
| 6866 | return isSamplerT() || isEventT() || isImageType() || isClkEventT() || | ||||||||
| 6867 | isQueueT() || isReserveIDT() || isPipeType() || isOCLExtOpaqueType(); | ||||||||
| 6868 | } | ||||||||
| 6869 | |||||||||
| 6870 | inline bool Type::isTemplateTypeParmType() const { | ||||||||
| 6871 | return isa<TemplateTypeParmType>(CanonicalType); | ||||||||
| 6872 | } | ||||||||
| 6873 | |||||||||
| 6874 | inline bool Type::isSpecificBuiltinType(unsigned K) const { | ||||||||
| 6875 | if (const BuiltinType *BT
| ||||||||
| 6876 | return BT->getKind() == static_cast<BuiltinType::Kind>(K); | ||||||||
| 6877 | } | ||||||||
| 6878 | return false; | ||||||||
| 6879 | } | ||||||||
| 6880 | |||||||||
| 6881 | inline bool Type::isPlaceholderType() const { | ||||||||
| 6882 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||
| 6883 | return BT->isPlaceholderType(); | ||||||||
| 6884 | return false; | ||||||||
| 6885 | } | ||||||||
| 6886 | |||||||||
| 6887 | inline const BuiltinType *Type::getAsPlaceholderType() const { | ||||||||
| 6888 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||
| 6889 | if (BT->isPlaceholderType()) | ||||||||
| 6890 | return BT; | ||||||||
| 6891 | return nullptr; | ||||||||
| 6892 | } | ||||||||
| 6893 | |||||||||
| 6894 | inline bool Type::isSpecificPlaceholderType(unsigned K) const { | ||||||||
| 6895 | assert(BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K))((BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)) ? static_cast<void> (0) : __assert_fail ("BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 6895, __PRETTY_FUNCTION__)); | ||||||||
| 6896 | return isSpecificBuiltinType(K); | ||||||||
| 6897 | } | ||||||||
| 6898 | |||||||||
| 6899 | inline bool Type::isNonOverloadPlaceholderType() const { | ||||||||
| 6900 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||
| 6901 | return BT->isNonOverloadPlaceholderType(); | ||||||||
| 6902 | return false; | ||||||||
| 6903 | } | ||||||||
| 6904 | |||||||||
| 6905 | inline bool Type::isVoidType() const { | ||||||||
| 6906 | return isSpecificBuiltinType(BuiltinType::Void); | ||||||||
| 6907 | } | ||||||||
| 6908 | |||||||||
| 6909 | inline bool Type::isHalfType() const { | ||||||||
| 6910 | // FIXME: Should we allow complex __fp16? Probably not. | ||||||||
| 6911 | return isSpecificBuiltinType(BuiltinType::Half); | ||||||||
| 6912 | } | ||||||||
| 6913 | |||||||||
| 6914 | inline bool Type::isFloat16Type() const { | ||||||||
| 6915 | return isSpecificBuiltinType(BuiltinType::Float16); | ||||||||
| 6916 | } | ||||||||
| 6917 | |||||||||
| 6918 | inline bool Type::isBFloat16Type() const { | ||||||||
| 6919 | return isSpecificBuiltinType(BuiltinType::BFloat16); | ||||||||
| 6920 | } | ||||||||
| 6921 | |||||||||
| 6922 | inline bool Type::isFloat128Type() const { | ||||||||
| 6923 | return isSpecificBuiltinType(BuiltinType::Float128); | ||||||||
| 6924 | } | ||||||||
| 6925 | |||||||||
| 6926 | inline bool Type::isNullPtrType() const { | ||||||||
| 6927 | return isSpecificBuiltinType(BuiltinType::NullPtr); | ||||||||
| 6928 | } | ||||||||
| 6929 | |||||||||
| 6930 | bool IsEnumDeclComplete(EnumDecl *); | ||||||||
| 6931 | bool IsEnumDeclScoped(EnumDecl *); | ||||||||
| 6932 | |||||||||
| 6933 | inline bool Type::isIntegerType() const { | ||||||||
| 6934 | if (const auto *BT
| ||||||||
| 6935 | return BT->getKind() >= BuiltinType::Bool && | ||||||||
| 6936 | BT->getKind() <= BuiltinType::Int128; | ||||||||
| 6937 | if (const EnumType *ET
| ||||||||
| 6938 | // Incomplete enum types are not treated as integer types. | ||||||||
| 6939 | // FIXME: In C++, enum types are never integer types. | ||||||||
| 6940 | return IsEnumDeclComplete(ET->getDecl()) && | ||||||||
| 6941 | !IsEnumDeclScoped(ET->getDecl()); | ||||||||
| 6942 | } | ||||||||
| 6943 | return isExtIntType(); | ||||||||
| 6944 | } | ||||||||
| 6945 | |||||||||
| 6946 | inline bool Type::isFixedPointType() const { | ||||||||
| 6947 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||
| 6948 | return BT->getKind() >= BuiltinType::ShortAccum && | ||||||||
| 6949 | BT->getKind() <= BuiltinType::SatULongFract; | ||||||||
| 6950 | } | ||||||||
| 6951 | return false; | ||||||||
| 6952 | } | ||||||||
| 6953 | |||||||||
| 6954 | inline bool Type::isFixedPointOrIntegerType() const { | ||||||||
| 6955 | return isFixedPointType() || isIntegerType(); | ||||||||
| 6956 | } | ||||||||
| 6957 | |||||||||
| 6958 | inline bool Type::isSaturatedFixedPointType() const { | ||||||||
| 6959 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||
| 6960 | return BT->getKind() >= BuiltinType::SatShortAccum && | ||||||||
| 6961 | BT->getKind() <= BuiltinType::SatULongFract; | ||||||||
| 6962 | } | ||||||||
| 6963 | return false; | ||||||||
| 6964 | } | ||||||||
| 6965 | |||||||||
| 6966 | inline bool Type::isUnsaturatedFixedPointType() const { | ||||||||
| 6967 | return isFixedPointType() && !isSaturatedFixedPointType(); | ||||||||
| 6968 | } | ||||||||
| 6969 | |||||||||
| 6970 | inline bool Type::isSignedFixedPointType() const { | ||||||||
| 6971 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||
| 6972 | return ((BT->getKind() >= BuiltinType::ShortAccum && | ||||||||
| 6973 | BT->getKind() <= BuiltinType::LongAccum) || | ||||||||
| 6974 | (BT->getKind() >= BuiltinType::ShortFract && | ||||||||
| 6975 | BT->getKind() <= BuiltinType::LongFract) || | ||||||||
| 6976 | (BT->getKind() >= BuiltinType::SatShortAccum && | ||||||||
| 6977 | BT->getKind() <= BuiltinType::SatLongAccum) || | ||||||||
| 6978 | (BT->getKind() >= BuiltinType::SatShortFract && | ||||||||
| 6979 | BT->getKind() <= BuiltinType::SatLongFract)); | ||||||||
| 6980 | } | ||||||||
| 6981 | return false; | ||||||||
| 6982 | } | ||||||||
| 6983 | |||||||||
| 6984 | inline bool Type::isUnsignedFixedPointType() const { | ||||||||
| 6985 | return isFixedPointType() && !isSignedFixedPointType(); | ||||||||
| 6986 | } | ||||||||
| 6987 | |||||||||
| 6988 | inline bool Type::isScalarType() const { | ||||||||
| 6989 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||
| 6990 | return BT->getKind() > BuiltinType::Void && | ||||||||
| 6991 | BT->getKind() <= BuiltinType::NullPtr; | ||||||||
| 6992 | if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) | ||||||||
| 6993 | // Enums are scalar types, but only if they are defined. Incomplete enums | ||||||||
| 6994 | // are not treated as scalar types. | ||||||||
| 6995 | return IsEnumDeclComplete(ET->getDecl()); | ||||||||
| 6996 | return isa<PointerType>(CanonicalType) || | ||||||||
| 6997 | isa<BlockPointerType>(CanonicalType) || | ||||||||
| 6998 | isa<MemberPointerType>(CanonicalType) || | ||||||||
| 6999 | isa<ComplexType>(CanonicalType) || | ||||||||
| 7000 | isa<ObjCObjectPointerType>(CanonicalType) || | ||||||||
| 7001 | isExtIntType(); | ||||||||
| 7002 | } | ||||||||
| 7003 | |||||||||
| 7004 | inline bool Type::isIntegralOrEnumerationType() const { | ||||||||
| 7005 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||
| 7006 | return BT->getKind() >= BuiltinType::Bool && | ||||||||
| 7007 | BT->getKind() <= BuiltinType::Int128; | ||||||||
| 7008 | |||||||||
| 7009 | // Check for a complete enum type; incomplete enum types are not properly an | ||||||||
| 7010 | // enumeration type in the sense required here. | ||||||||
| 7011 | if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) | ||||||||
| 7012 | return IsEnumDeclComplete(ET->getDecl()); | ||||||||
| 7013 | |||||||||
| 7014 | return isExtIntType(); | ||||||||
| 7015 | } | ||||||||
| 7016 | |||||||||
| 7017 | inline bool Type::isBooleanType() const { | ||||||||
| 7018 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||
| 7019 | return BT->getKind() == BuiltinType::Bool; | ||||||||
| 7020 | return false; | ||||||||
| 7021 | } | ||||||||
| 7022 | |||||||||
| 7023 | inline bool Type::isUndeducedType() const { | ||||||||
| 7024 | auto *DT = getContainedDeducedType(); | ||||||||
| 7025 | return DT && !DT->isDeduced(); | ||||||||
| 7026 | } | ||||||||
| 7027 | |||||||||
| 7028 | /// Determines whether this is a type for which one can define | ||||||||
| 7029 | /// an overloaded operator. | ||||||||
| 7030 | inline bool Type::isOverloadableType() const { | ||||||||
| 7031 | return isDependentType() || isRecordType() || isEnumeralType(); | ||||||||
| 7032 | } | ||||||||
| 7033 | |||||||||
| 7034 | /// Determines whether this type can decay to a pointer type. | ||||||||
| 7035 | inline bool Type::canDecayToPointerType() const { | ||||||||
| 7036 | return isFunctionType() || isArrayType(); | ||||||||
| 7037 | } | ||||||||
| 7038 | |||||||||
| 7039 | inline bool Type::hasPointerRepresentation() const { | ||||||||
| 7040 | return (isPointerType() || isReferenceType() || isBlockPointerType() || | ||||||||
| 7041 | isObjCObjectPointerType() || isNullPtrType()); | ||||||||
| 7042 | } | ||||||||
| 7043 | |||||||||
| 7044 | inline bool Type::hasObjCPointerRepresentation() const { | ||||||||
| 7045 | return isObjCObjectPointerType(); | ||||||||
| 7046 | } | ||||||||
| 7047 | |||||||||
| 7048 | inline const Type *Type::getBaseElementTypeUnsafe() const { | ||||||||
| 7049 | const Type *type = this; | ||||||||
| 7050 | while (const ArrayType *arrayType = type->getAsArrayTypeUnsafe()) | ||||||||
| 7051 | type = arrayType->getElementType().getTypePtr(); | ||||||||
| 7052 | return type; | ||||||||
| 7053 | } | ||||||||
| 7054 | |||||||||
| 7055 | inline const Type *Type::getPointeeOrArrayElementType() const { | ||||||||
| 7056 | const Type *type = this; | ||||||||
| 7057 | if (type->isAnyPointerType()) | ||||||||
| 7058 | return type->getPointeeType().getTypePtr(); | ||||||||
| 7059 | else if (type->isArrayType()) | ||||||||
| 7060 | return type->getBaseElementTypeUnsafe(); | ||||||||
| 7061 | return type; | ||||||||
| 7062 | } | ||||||||
| 7063 | /// Insertion operator for diagnostics. This allows sending address spaces into | ||||||||
| 7064 | /// a diagnostic with <<. | ||||||||
| 7065 | inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, | ||||||||
| 7066 | LangAS AS) { | ||||||||
| 7067 | DB.AddTaggedVal(static_cast<std::underlying_type_t<LangAS>>(AS), | ||||||||
| 7068 | DiagnosticsEngine::ArgumentKind::ak_addrspace); | ||||||||
| 7069 | return DB; | ||||||||
| 7070 | } | ||||||||
| 7071 | |||||||||
| 7072 | /// Insertion operator for partial diagnostics. This allows sending adress | ||||||||
| 7073 | /// spaces into a diagnostic with <<. | ||||||||
| 7074 | inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD, | ||||||||
| 7075 | LangAS AS) { | ||||||||
| 7076 | PD.AddTaggedVal(static_cast<std::underlying_type_t<LangAS>>(AS), | ||||||||
| 7077 | DiagnosticsEngine::ArgumentKind::ak_addrspace); | ||||||||
| 7078 | return PD; | ||||||||
| 7079 | } | ||||||||
| 7080 | |||||||||
| 7081 | /// Insertion operator for diagnostics. This allows sending Qualifiers into a | ||||||||
| 7082 | /// diagnostic with <<. | ||||||||
| 7083 | inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, | ||||||||
| 7084 | Qualifiers Q) { | ||||||||
| 7085 | DB.AddTaggedVal(Q.getAsOpaqueValue(), | ||||||||
| 7086 | DiagnosticsEngine::ArgumentKind::ak_qual); | ||||||||
| 7087 | return DB; | ||||||||
| 7088 | } | ||||||||
| 7089 | |||||||||
| 7090 | /// Insertion operator for partial diagnostics. This allows sending Qualifiers | ||||||||
| 7091 | /// into a diagnostic with <<. | ||||||||
| 7092 | inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD, | ||||||||
| 7093 | Qualifiers Q) { | ||||||||
| 7094 | PD.AddTaggedVal(Q.getAsOpaqueValue(), | ||||||||
| 7095 | DiagnosticsEngine::ArgumentKind::ak_qual); | ||||||||
| 7096 | return PD; | ||||||||
| 7097 | } | ||||||||
| 7098 | |||||||||
| 7099 | /// Insertion operator for diagnostics. This allows sending QualType's into a | ||||||||
| 7100 | /// diagnostic with <<. | ||||||||
| 7101 | inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, | ||||||||
| 7102 | QualType T) { | ||||||||
| 7103 | DB.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), | ||||||||
| 7104 | DiagnosticsEngine::ak_qualtype); | ||||||||
| 7105 | return DB; | ||||||||
| 7106 | } | ||||||||
| 7107 | |||||||||
| 7108 | /// Insertion operator for partial diagnostics. This allows sending QualType's | ||||||||
| 7109 | /// into a diagnostic with <<. | ||||||||
| 7110 | inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD, | ||||||||
| 7111 | QualType T) { | ||||||||
| 7112 | PD.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), | ||||||||
| 7113 | DiagnosticsEngine::ak_qualtype); | ||||||||
| 7114 | return PD; | ||||||||
| 7115 | } | ||||||||
| 7116 | |||||||||
| 7117 | // Helper class template that is used by Type::getAs to ensure that one does | ||||||||
| 7118 | // not try to look through a qualified type to get to an array type. | ||||||||
| 7119 | template <typename T> | ||||||||
| 7120 | using TypeIsArrayType = | ||||||||
| 7121 | std::integral_constant<bool, std::is_same<T, ArrayType>::value || | ||||||||
| 7122 | std::is_base_of<ArrayType, T>::value>; | ||||||||
| 7123 | |||||||||
| 7124 | // Member-template getAs<specific type>'. | ||||||||
| 7125 | template <typename T> const T *Type::getAs() const { | ||||||||
| 7126 | static_assert(!TypeIsArrayType<T>::value, | ||||||||
| 7127 | "ArrayType cannot be used with getAs!"); | ||||||||
| 7128 | |||||||||
| 7129 | // If this is directly a T type, return it. | ||||||||
| 7130 | if (const auto *Ty = dyn_cast<T>(this)) | ||||||||
| 7131 | return Ty; | ||||||||
| 7132 | |||||||||
| 7133 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||
| 7134 | if (!isa<T>(CanonicalType)) | ||||||||
| 7135 | return nullptr; | ||||||||
| 7136 | |||||||||
| 7137 | // If this is a typedef for the type, strip the typedef off without | ||||||||
| 7138 | // losing all typedef information. | ||||||||
| 7139 | return cast<T>(getUnqualifiedDesugaredType()); | ||||||||
| 7140 | } | ||||||||
| 7141 | |||||||||
| 7142 | template <typename T> const T *Type::getAsAdjusted() const { | ||||||||
| 7143 | static_assert(!TypeIsArrayType<T>::value, "ArrayType cannot be used with getAsAdjusted!"); | ||||||||
| 7144 | |||||||||
| 7145 | // If this is directly a T type, return it. | ||||||||
| 7146 | if (const auto *Ty = dyn_cast<T>(this)) | ||||||||
| 7147 | return Ty; | ||||||||
| 7148 | |||||||||
| 7149 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||
| 7150 | if (!isa<T>(CanonicalType)) | ||||||||
| 7151 | return nullptr; | ||||||||
| 7152 | |||||||||
| 7153 | // Strip off type adjustments that do not modify the underlying nature of the | ||||||||
| 7154 | // type. | ||||||||
| 7155 | const Type *Ty = this; | ||||||||
| 7156 | while (Ty) { | ||||||||
| 7157 | if (const auto *A = dyn_cast<AttributedType>(Ty)) | ||||||||
| 7158 | Ty = A->getModifiedType().getTypePtr(); | ||||||||
| 7159 | else if (const auto *E = dyn_cast<ElaboratedType>(Ty)) | ||||||||
| 7160 | Ty = E->desugar().getTypePtr(); | ||||||||
| 7161 | else if (const auto *P = dyn_cast<ParenType>(Ty)) | ||||||||
| 7162 | Ty = P->desugar().getTypePtr(); | ||||||||
| 7163 | else if (const auto *A = dyn_cast<AdjustedType>(Ty)) | ||||||||
| 7164 | Ty = A->desugar().getTypePtr(); | ||||||||
| 7165 | else if (const auto *M = dyn_cast<MacroQualifiedType>(Ty)) | ||||||||
| 7166 | Ty = M->desugar().getTypePtr(); | ||||||||
| 7167 | else | ||||||||
| 7168 | break; | ||||||||
| 7169 | } | ||||||||
| 7170 | |||||||||
| 7171 | // Just because the canonical type is correct does not mean we can use cast<>, | ||||||||
| 7172 | // since we may not have stripped off all the sugar down to the base type. | ||||||||
| 7173 | return dyn_cast<T>(Ty); | ||||||||
| 7174 | } | ||||||||
| 7175 | |||||||||
| 7176 | inline const ArrayType *Type::getAsArrayTypeUnsafe() const { | ||||||||
| 7177 | // If this is directly an array type, return it. | ||||||||
| 7178 | if (const auto *arr = dyn_cast<ArrayType>(this)) | ||||||||
| 7179 | return arr; | ||||||||
| 7180 | |||||||||
| 7181 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||
| 7182 | if (!isa<ArrayType>(CanonicalType)) | ||||||||
| 7183 | return nullptr; | ||||||||
| 7184 | |||||||||
| 7185 | // If this is a typedef for the type, strip the typedef off without | ||||||||
| 7186 | // losing all typedef information. | ||||||||
| 7187 | return cast<ArrayType>(getUnqualifiedDesugaredType()); | ||||||||
| 7188 | } | ||||||||
| 7189 | |||||||||
| 7190 | template <typename T> const T *Type::castAs() const { | ||||||||
| 7191 | static_assert(!TypeIsArrayType<T>::value, | ||||||||
| 7192 | "ArrayType cannot be used with castAs!"); | ||||||||
| 7193 | |||||||||
| 7194 | if (const auto *ty = dyn_cast<T>(this)) return ty; | ||||||||
| 7195 | assert(isa<T>(CanonicalType))((isa<T>(CanonicalType)) ? static_cast<void> (0) : __assert_fail ("isa<T>(CanonicalType)", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 7195, __PRETTY_FUNCTION__)); | ||||||||
| 7196 | return cast<T>(getUnqualifiedDesugaredType()); | ||||||||
| 7197 | } | ||||||||
| 7198 | |||||||||
| 7199 | inline const ArrayType *Type::castAsArrayTypeUnsafe() const { | ||||||||
| 7200 | assert(isa<ArrayType>(CanonicalType))((isa<ArrayType>(CanonicalType)) ? static_cast<void> (0) : __assert_fail ("isa<ArrayType>(CanonicalType)", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 7200, __PRETTY_FUNCTION__)); | ||||||||
| 7201 | if (const auto *arr = dyn_cast<ArrayType>(this)) return arr; | ||||||||
| 7202 | return cast<ArrayType>(getUnqualifiedDesugaredType()); | ||||||||
| 7203 | } | ||||||||
| 7204 | |||||||||
| 7205 | DecayedType::DecayedType(QualType OriginalType, QualType DecayedPtr, | ||||||||
| 7206 | QualType CanonicalPtr) | ||||||||
| 7207 | : AdjustedType(Decayed, OriginalType, DecayedPtr, CanonicalPtr) { | ||||||||
| 7208 | #ifndef NDEBUG | ||||||||
| 7209 | QualType Adjusted = getAdjustedType(); | ||||||||
| 7210 | (void)AttributedType::stripOuterNullability(Adjusted); | ||||||||
| 7211 | assert(isa<PointerType>(Adjusted))((isa<PointerType>(Adjusted)) ? static_cast<void> (0) : __assert_fail ("isa<PointerType>(Adjusted)", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include/clang/AST/Type.h" , 7211, __PRETTY_FUNCTION__)); | ||||||||
| 7212 | #endif | ||||||||
| 7213 | } | ||||||||
| 7214 | |||||||||
| 7215 | QualType DecayedType::getPointeeType() const { | ||||||||
| 7216 | QualType Decayed = getDecayedType(); | ||||||||
| 7217 | (void)AttributedType::stripOuterNullability(Decayed); | ||||||||
| 7218 | return cast<PointerType>(Decayed)->getPointeeType(); | ||||||||
| 7219 | } | ||||||||
| 7220 | |||||||||
| 7221 | // Get the decimal string representation of a fixed point type, represented | ||||||||
| 7222 | // as a scaled integer. | ||||||||
| 7223 | // TODO: At some point, we should change the arguments to instead just accept an | ||||||||
| 7224 | // APFixedPoint instead of APSInt and scale. | ||||||||
| 7225 | void FixedPointValueToString(SmallVectorImpl<char> &Str, llvm::APSInt Val, | ||||||||
| 7226 | unsigned Scale); | ||||||||
| 7227 | |||||||||
| 7228 | } // namespace clang | ||||||||
| 7229 | |||||||||
| 7230 | #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()) &&((Value == reinterpret_cast<intptr_t>(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer" ) ? static_cast<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-12~++20200806111125+5446ec85070/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __PRETTY_FUNCTION__)) |
| 86 | "Can only return the address if IntBits is cleared and "((Value == reinterpret_cast<intptr_t>(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer" ) ? static_cast<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-12~++20200806111125+5446ec85070/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __PRETTY_FUNCTION__)) |
| 87 | "PtrTraits doesn't change the pointer")((Value == reinterpret_cast<intptr_t>(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer" ) ? static_cast<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-12~++20200806111125+5446ec85070/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __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 &&(((PtrWord & ~PointerBitMask) == 0 && "Pointer is not sufficiently aligned" ) ? static_cast<void> (0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/ADT/PointerIntPair.h" , 179, __PRETTY_FUNCTION__)) |
| 179 | "Pointer is not sufficiently aligned")(((PtrWord & ~PointerBitMask) == 0 && "Pointer is not sufficiently aligned" ) ? static_cast<void> (0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/ADT/PointerIntPair.h" , 179, __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")(((IntWord & ~IntMask) == 0 && "Integer too large for field" ) ? static_cast<void> (0) : __assert_fail ("(IntWord & ~IntMask) == 0 && \"Integer too large for field\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/ADT/PointerIntPair.h" , 186, __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")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 83, __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")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 90, __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")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 97, __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")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 104, __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")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 111, __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!")((isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 255, __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!")((isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 262, __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!")((isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 269, __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!")((isa<X>(Val.get()) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val.get()) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 277, __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!")((isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 293, __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!")((isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 303, __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!")((isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/include/llvm/Support/Casting.h" , 311, __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 |