clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name SemaChecking.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/build-llvm/tools/clang/lib/Sema -resource-dir /usr/lib/llvm-14/lib/clang/14.0.0 -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/build-llvm/tools/clang/lib/Sema -I /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/clang/lib/Sema -I /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/clang/include -I /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/build-llvm/include -I /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/llvm/include -D NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-14/lib/clang/14.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/build-llvm/tools/clang/lib/Sema -fdebug-prefix-map=/build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e=. -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2021-09-04-040900-46481-1 -x c++ /build/llvm-toolchain-snapshot-14~++20210903100615+fd66b44ec19e/clang/lib/Sema/SemaChecking.cpp
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | |
14 | #include "clang/AST/APValue.h" |
15 | #include "clang/AST/ASTContext.h" |
16 | #include "clang/AST/Attr.h" |
17 | #include "clang/AST/AttrIterator.h" |
18 | #include "clang/AST/CharUnits.h" |
19 | #include "clang/AST/Decl.h" |
20 | #include "clang/AST/DeclBase.h" |
21 | #include "clang/AST/DeclCXX.h" |
22 | #include "clang/AST/DeclObjC.h" |
23 | #include "clang/AST/DeclarationName.h" |
24 | #include "clang/AST/EvaluatedExprVisitor.h" |
25 | #include "clang/AST/Expr.h" |
26 | #include "clang/AST/ExprCXX.h" |
27 | #include "clang/AST/ExprObjC.h" |
28 | #include "clang/AST/ExprOpenMP.h" |
29 | #include "clang/AST/FormatString.h" |
30 | #include "clang/AST/NSAPI.h" |
31 | #include "clang/AST/NonTrivialTypeVisitor.h" |
32 | #include "clang/AST/OperationKinds.h" |
33 | #include "clang/AST/RecordLayout.h" |
34 | #include "clang/AST/Stmt.h" |
35 | #include "clang/AST/TemplateBase.h" |
36 | #include "clang/AST/Type.h" |
37 | #include "clang/AST/TypeLoc.h" |
38 | #include "clang/AST/UnresolvedSet.h" |
39 | #include "clang/Basic/AddressSpaces.h" |
40 | #include "clang/Basic/CharInfo.h" |
41 | #include "clang/Basic/Diagnostic.h" |
42 | #include "clang/Basic/IdentifierTable.h" |
43 | #include "clang/Basic/LLVM.h" |
44 | #include "clang/Basic/LangOptions.h" |
45 | #include "clang/Basic/OpenCLOptions.h" |
46 | #include "clang/Basic/OperatorKinds.h" |
47 | #include "clang/Basic/PartialDiagnostic.h" |
48 | #include "clang/Basic/SourceLocation.h" |
49 | #include "clang/Basic/SourceManager.h" |
50 | #include "clang/Basic/Specifiers.h" |
51 | #include "clang/Basic/SyncScope.h" |
52 | #include "clang/Basic/TargetBuiltins.h" |
53 | #include "clang/Basic/TargetCXXABI.h" |
54 | #include "clang/Basic/TargetInfo.h" |
55 | #include "clang/Basic/TypeTraits.h" |
56 | #include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering. |
57 | #include "clang/Sema/Initialization.h" |
58 | #include "clang/Sema/Lookup.h" |
59 | #include "clang/Sema/Ownership.h" |
60 | #include "clang/Sema/Scope.h" |
61 | #include "clang/Sema/ScopeInfo.h" |
62 | #include "clang/Sema/Sema.h" |
63 | #include "clang/Sema/SemaInternal.h" |
64 | #include "llvm/ADT/APFloat.h" |
65 | #include "llvm/ADT/APInt.h" |
66 | #include "llvm/ADT/APSInt.h" |
67 | #include "llvm/ADT/ArrayRef.h" |
68 | #include "llvm/ADT/DenseMap.h" |
69 | #include "llvm/ADT/FoldingSet.h" |
70 | #include "llvm/ADT/None.h" |
71 | #include "llvm/ADT/Optional.h" |
72 | #include "llvm/ADT/STLExtras.h" |
73 | #include "llvm/ADT/SmallBitVector.h" |
74 | #include "llvm/ADT/SmallPtrSet.h" |
75 | #include "llvm/ADT/SmallString.h" |
76 | #include "llvm/ADT/SmallVector.h" |
77 | #include "llvm/ADT/StringRef.h" |
78 | #include "llvm/ADT/StringSet.h" |
79 | #include "llvm/ADT/StringSwitch.h" |
80 | #include "llvm/ADT/Triple.h" |
81 | #include "llvm/Support/AtomicOrdering.h" |
82 | #include "llvm/Support/Casting.h" |
83 | #include "llvm/Support/Compiler.h" |
84 | #include "llvm/Support/ConvertUTF.h" |
85 | #include "llvm/Support/ErrorHandling.h" |
86 | #include "llvm/Support/Format.h" |
87 | #include "llvm/Support/Locale.h" |
88 | #include "llvm/Support/MathExtras.h" |
89 | #include "llvm/Support/SaveAndRestore.h" |
90 | #include "llvm/Support/raw_ostream.h" |
91 | #include <algorithm> |
92 | #include <bitset> |
93 | #include <cassert> |
94 | #include <cctype> |
95 | #include <cstddef> |
96 | #include <cstdint> |
97 | #include <functional> |
98 | #include <limits> |
99 | #include <string> |
100 | #include <tuple> |
101 | #include <utility> |
102 | |
103 | using namespace clang; |
104 | using namespace sema; |
105 | |
106 | SourceLocation Sema::getLocationOfStringLiteralByte(const StringLiteral *SL, |
107 | unsigned ByteNo) const { |
108 | return SL->getLocationOfByte(ByteNo, getSourceManager(), LangOpts, |
109 | Context.getTargetInfo()); |
110 | } |
111 | |
112 | |
113 | |
114 | static bool checkArgCount(Sema &S, CallExpr *call, unsigned desiredArgCount) { |
115 | unsigned argCount = call->getNumArgs(); |
116 | if (argCount == desiredArgCount) return false; |
117 | |
118 | if (argCount < desiredArgCount) |
119 | return S.Diag(call->getEndLoc(), diag::err_typecheck_call_too_few_args) |
120 | << 0 << desiredArgCount << argCount |
121 | << call->getSourceRange(); |
122 | |
123 | |
124 | SourceRange range(call->getArg(desiredArgCount)->getBeginLoc(), |
125 | call->getArg(argCount - 1)->getEndLoc()); |
126 | |
127 | return S.Diag(range.getBegin(), diag::err_typecheck_call_too_many_args) |
128 | << 0 << desiredArgCount << argCount |
129 | << call->getArg(1)->getSourceRange(); |
130 | } |
131 | |
132 | |
133 | |
134 | static bool SemaBuiltinAnnotation(Sema &S, CallExpr *TheCall) { |
135 | if (checkArgCount(S, TheCall, 2)) |
136 | return true; |
137 | |
138 | |
139 | Expr *ValArg = TheCall->getArg(0); |
140 | QualType Ty = ValArg->getType(); |
141 | if (!Ty->isIntegerType()) { |
142 | S.Diag(ValArg->getBeginLoc(), diag::err_builtin_annotation_first_arg) |
143 | << ValArg->getSourceRange(); |
144 | return true; |
145 | } |
146 | |
147 | |
148 | Expr *StrArg = TheCall->getArg(1)->IgnoreParenCasts(); |
149 | StringLiteral *Literal = dyn_cast<StringLiteral>(StrArg); |
150 | if (!Literal || !Literal->isAscii()) { |
151 | S.Diag(StrArg->getBeginLoc(), diag::err_builtin_annotation_second_arg) |
152 | << StrArg->getSourceRange(); |
153 | return true; |
154 | } |
155 | |
156 | TheCall->setType(Ty); |
157 | return false; |
158 | } |
159 | |
160 | static bool SemaBuiltinMSVCAnnotation(Sema &S, CallExpr *TheCall) { |
161 | |
162 | if (TheCall->getNumArgs() < 1) { |
163 | S.Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least) |
164 | << 0 << 1 << TheCall->getNumArgs() |
165 | << TheCall->getCallee()->getSourceRange(); |
166 | return true; |
167 | } |
168 | |
169 | |
170 | for (Expr *Arg : TheCall->arguments()) { |
171 | auto *Literal = dyn_cast<StringLiteral>(Arg->IgnoreParenCasts()); |
172 | if (!Literal || !Literal->isWide()) { |
173 | S.Diag(Arg->getBeginLoc(), diag::err_msvc_annotation_wide_str) |
174 | << Arg->getSourceRange(); |
175 | return true; |
176 | } |
177 | } |
178 | |
179 | return false; |
180 | } |
181 | |
182 | |
183 | |
184 | static bool SemaBuiltinAddressof(Sema &S, CallExpr *TheCall) { |
185 | if (checkArgCount(S, TheCall, 1)) |
186 | return true; |
187 | |
188 | ExprResult Arg(TheCall->getArg(0)); |
189 | QualType ResultType = S.CheckAddressOfOperand(Arg, TheCall->getBeginLoc()); |
190 | if (ResultType.isNull()) |
191 | return true; |
192 | |
193 | TheCall->setArg(0, Arg.get()); |
194 | TheCall->setType(ResultType); |
195 | return false; |
196 | } |
197 | |
198 | |
199 | |
200 | static bool SemaBuiltinPreserveAI(Sema &S, CallExpr *TheCall) { |
201 | if (checkArgCount(S, TheCall, 1)) |
202 | return true; |
203 | |
204 | TheCall->setType(TheCall->getArg(0)->getType()); |
205 | return false; |
206 | } |
207 | |
208 | |
209 | |
210 | |
211 | static bool SemaBuiltinAlignment(Sema &S, CallExpr *TheCall, unsigned ID) { |
212 | if (checkArgCount(S, TheCall, 2)) |
213 | return true; |
214 | |
215 | clang::Expr *Source = TheCall->getArg(0); |
216 | bool IsBooleanAlignBuiltin = ID == Builtin::BI__builtin_is_aligned; |
217 | |
218 | auto IsValidIntegerType = [](QualType Ty) { |
219 | return Ty->isIntegerType() && !Ty->isEnumeralType() && !Ty->isBooleanType(); |
220 | }; |
221 | QualType SrcTy = Source->getType(); |
222 | |
223 | if (SrcTy->canDecayToPointerType() && SrcTy->isArrayType()) { |
224 | SrcTy = S.Context.getDecayedType(SrcTy); |
225 | } |
226 | if ((!SrcTy->isPointerType() && !IsValidIntegerType(SrcTy)) || |
227 | SrcTy->isFunctionPointerType()) { |
228 | |
229 | |
230 | S.Diag(Source->getExprLoc(), diag::err_typecheck_expect_scalar_operand) |
231 | << SrcTy; |
232 | return true; |
233 | } |
234 | |
235 | clang::Expr *AlignOp = TheCall->getArg(1); |
236 | if (!IsValidIntegerType(AlignOp->getType())) { |
237 | S.Diag(AlignOp->getExprLoc(), diag::err_typecheck_expect_int) |
238 | << AlignOp->getType(); |
239 | return true; |
240 | } |
241 | Expr::EvalResult AlignResult; |
242 | unsigned MaxAlignmentBits = S.Context.getIntWidth(SrcTy) - 1; |
243 | |
244 | if (!AlignOp->isValueDependent() && |
245 | AlignOp->EvaluateAsInt(AlignResult, S.Context, |
246 | Expr::SE_AllowSideEffects)) { |
247 | llvm::APSInt AlignValue = AlignResult.Val.getInt(); |
248 | llvm::APSInt MaxValue( |
249 | llvm::APInt::getOneBitSet(MaxAlignmentBits + 1, MaxAlignmentBits)); |
250 | if (AlignValue < 1) { |
251 | S.Diag(AlignOp->getExprLoc(), diag::err_alignment_too_small) << 1; |
252 | return true; |
253 | } |
254 | if (llvm::APSInt::compareValues(AlignValue, MaxValue) > 0) { |
255 | S.Diag(AlignOp->getExprLoc(), diag::err_alignment_too_big) |
256 | << toString(MaxValue, 10); |
257 | return true; |
258 | } |
259 | if (!AlignValue.isPowerOf2()) { |
260 | S.Diag(AlignOp->getExprLoc(), diag::err_alignment_not_power_of_two); |
261 | return true; |
262 | } |
263 | if (AlignValue == 1) { |
264 | S.Diag(AlignOp->getExprLoc(), diag::warn_alignment_builtin_useless) |
265 | << IsBooleanAlignBuiltin; |
266 | } |
267 | } |
268 | |
269 | ExprResult SrcArg = S.PerformCopyInitialization( |
270 | InitializedEntity::InitializeParameter(S.Context, SrcTy, false), |
271 | SourceLocation(), Source); |
272 | if (SrcArg.isInvalid()) |
273 | return true; |
274 | TheCall->setArg(0, SrcArg.get()); |
275 | ExprResult AlignArg = |
276 | S.PerformCopyInitialization(InitializedEntity::InitializeParameter( |
277 | S.Context, AlignOp->getType(), false), |
278 | SourceLocation(), AlignOp); |
279 | if (AlignArg.isInvalid()) |
280 | return true; |
281 | TheCall->setArg(1, AlignArg.get()); |
282 | |
283 | |
284 | |
285 | TheCall->setType(IsBooleanAlignBuiltin ? S.Context.BoolTy : SrcTy); |
286 | return false; |
287 | } |
288 | |
289 | static bool SemaBuiltinOverflow(Sema &S, CallExpr *TheCall, |
290 | unsigned BuiltinID) { |
291 | if (checkArgCount(S, TheCall, 3)) |
292 | return true; |
293 | |
294 | |
295 | for (unsigned I = 0; I < 2; ++I) { |
296 | ExprResult Arg = S.DefaultFunctionArrayLvalueConversion(TheCall->getArg(I)); |
297 | if (Arg.isInvalid()) return true; |
298 | TheCall->setArg(I, Arg.get()); |
299 | |
300 | QualType Ty = Arg.get()->getType(); |
301 | if (!Ty->isIntegerType()) { |
302 | S.Diag(Arg.get()->getBeginLoc(), diag::err_overflow_builtin_must_be_int) |
303 | << Ty << Arg.get()->getSourceRange(); |
304 | return true; |
305 | } |
306 | } |
307 | |
308 | |
309 | |
310 | |
311 | { |
312 | ExprResult Arg = S.DefaultFunctionArrayLvalueConversion(TheCall->getArg(2)); |
313 | if (Arg.isInvalid()) return true; |
314 | TheCall->setArg(2, Arg.get()); |
315 | |
316 | QualType Ty = Arg.get()->getType(); |
317 | const auto *PtrTy = Ty->getAs<PointerType>(); |
318 | if (!PtrTy || |
319 | !PtrTy->getPointeeType()->isIntegerType() || |
320 | PtrTy->getPointeeType().isConstQualified()) { |
321 | S.Diag(Arg.get()->getBeginLoc(), |
322 | diag::err_overflow_builtin_must_be_ptr_int) |
323 | << Ty << Arg.get()->getSourceRange(); |
324 | return true; |
325 | } |
326 | } |
327 | |
328 | |
329 | |
330 | if (BuiltinID == Builtin::BI__builtin_mul_overflow) { |
331 | for (unsigned I = 0; I < 3; ++I) { |
332 | const auto Arg = TheCall->getArg(I); |
333 | |
334 | auto Ty = I < 2 ? Arg->getType() : Arg->getType()->getPointeeType(); |
335 | if (Ty->isExtIntType() && Ty->isSignedIntegerType() && |
336 | S.getASTContext().getIntWidth(Ty) > 128) |
337 | return S.Diag(Arg->getBeginLoc(), |
338 | diag::err_overflow_builtin_ext_int_max_size) |
339 | << 128; |
340 | } |
341 | } |
342 | |
343 | return false; |
344 | } |
345 | |
346 | static bool SemaBuiltinCallWithStaticChain(Sema &S, CallExpr *BuiltinCall) { |
347 | if (checkArgCount(S, BuiltinCall, 2)) |
348 | return true; |
349 | |
350 | SourceLocation BuiltinLoc = BuiltinCall->getBeginLoc(); |
351 | Expr *Builtin = BuiltinCall->getCallee()->IgnoreImpCasts(); |
352 | Expr *Call = BuiltinCall->getArg(0); |
353 | Expr *Chain = BuiltinCall->getArg(1); |
354 | |
355 | if (Call->getStmtClass() != Stmt::CallExprClass) { |
356 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_not_call) |
357 | << Call->getSourceRange(); |
358 | return true; |
359 | } |
360 | |
361 | auto CE = cast<CallExpr>(Call); |
362 | if (CE->getCallee()->getType()->isBlockPointerType()) { |
363 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_block_call) |
364 | << Call->getSourceRange(); |
365 | return true; |
366 | } |
367 | |
368 | const Decl *TargetDecl = CE->getCalleeDecl(); |
369 | if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(TargetDecl)) |
370 | if (FD->getBuiltinID()) { |
371 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_builtin_call) |
372 | << Call->getSourceRange(); |
373 | return true; |
374 | } |
375 | |
376 | if (isa<CXXPseudoDestructorExpr>(CE->getCallee()->IgnoreParens())) { |
377 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_pdtor_call) |
378 | << Call->getSourceRange(); |
379 | return true; |
380 | } |
381 | |
382 | ExprResult ChainResult = S.UsualUnaryConversions(Chain); |
383 | if (ChainResult.isInvalid()) |
384 | return true; |
385 | if (!ChainResult.get()->getType()->isPointerType()) { |
386 | S.Diag(BuiltinLoc, diag::err_second_argument_to_cwsc_not_pointer) |
387 | << Chain->getSourceRange(); |
388 | return true; |
389 | } |
390 | |
391 | QualType ReturnTy = CE->getCallReturnType(S.Context); |
392 | QualType ArgTys[2] = { ReturnTy, ChainResult.get()->getType() }; |
393 | QualType BuiltinTy = S.Context.getFunctionType( |
394 | ReturnTy, ArgTys, FunctionProtoType::ExtProtoInfo()); |
395 | QualType BuiltinPtrTy = S.Context.getPointerType(BuiltinTy); |
396 | |
397 | Builtin = |
398 | S.ImpCastExprToType(Builtin, BuiltinPtrTy, CK_BuiltinFnToFnPtr).get(); |
399 | |
400 | BuiltinCall->setType(CE->getType()); |
401 | BuiltinCall->setValueKind(CE->getValueKind()); |
402 | BuiltinCall->setObjectKind(CE->getObjectKind()); |
403 | BuiltinCall->setCallee(Builtin); |
404 | BuiltinCall->setArg(1, ChainResult.get()); |
405 | |
406 | return false; |
407 | } |
408 | |
409 | namespace { |
410 | |
411 | class EstimateSizeFormatHandler |
412 | : public analyze_format_string::FormatStringHandler { |
413 | size_t Size; |
414 | |
415 | public: |
416 | EstimateSizeFormatHandler(StringRef Format) |
417 | : Size(std::min(Format.find(0), Format.size()) + |
418 | 1 ) {} |
419 | |
420 | bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, |
421 | const char *, unsigned SpecifierLen) override { |
422 | |
423 | const size_t FieldWidth = computeFieldWidth(FS); |
424 | const size_t Precision = computePrecision(FS); |
425 | |
426 | |
427 | switch (FS.getConversionSpecifier().getKind()) { |
428 | |
429 | case analyze_format_string::ConversionSpecifier::cArg: |
430 | case analyze_format_string::ConversionSpecifier::CArg: |
431 | Size += std::max(FieldWidth, (size_t)1); |
432 | break; |
433 | |
434 | case analyze_format_string::ConversionSpecifier::dArg: |
435 | case analyze_format_string::ConversionSpecifier::DArg: |
436 | case analyze_format_string::ConversionSpecifier::iArg: |
437 | case analyze_format_string::ConversionSpecifier::oArg: |
438 | case analyze_format_string::ConversionSpecifier::OArg: |
439 | case analyze_format_string::ConversionSpecifier::uArg: |
440 | case analyze_format_string::ConversionSpecifier::UArg: |
441 | case analyze_format_string::ConversionSpecifier::xArg: |
442 | case analyze_format_string::ConversionSpecifier::XArg: |
443 | Size += std::max(FieldWidth, Precision); |
444 | break; |
445 | |
446 | |
447 | |
448 | case analyze_format_string::ConversionSpecifier::gArg: |
449 | case analyze_format_string::ConversionSpecifier::GArg: |
450 | |
451 | |
452 | case analyze_format_string::ConversionSpecifier::fArg: |
453 | case analyze_format_string::ConversionSpecifier::FArg: |
454 | Size += std::max(FieldWidth, 1 + |
455 | (Precision ? 1 + Precision |
456 | : 0) ); |
457 | break; |
458 | |
459 | |
460 | case analyze_format_string::ConversionSpecifier::eArg: |
461 | case analyze_format_string::ConversionSpecifier::EArg: |
462 | Size += |
463 | std::max(FieldWidth, |
464 | 1 + |
465 | (Precision ? 1 + Precision : 0) + |
466 | 1 + 2 ); |
467 | break; |
468 | |
469 | |
470 | case analyze_format_string::ConversionSpecifier::aArg: |
471 | case analyze_format_string::ConversionSpecifier::AArg: |
472 | Size += |
473 | std::max(FieldWidth, |
474 | 2 + 1 + |
475 | (Precision ? 1 + Precision : 0) + |
476 | 1 + 1 + 1 ); |
477 | break; |
478 | |
479 | |
480 | case analyze_format_string::ConversionSpecifier::sArg: |
481 | case analyze_format_string::ConversionSpecifier::SArg: |
482 | Size += FieldWidth; |
483 | break; |
484 | |
485 | |
486 | case analyze_format_string::ConversionSpecifier::pArg: |
487 | Size += std::max(FieldWidth, 2 + Precision); |
488 | break; |
489 | |
490 | |
491 | case analyze_format_string::ConversionSpecifier::PercentArg: |
492 | Size += 1; |
493 | break; |
494 | |
495 | default: |
496 | break; |
497 | } |
498 | |
499 | Size += FS.hasPlusPrefix() || FS.hasSpacePrefix(); |
500 | |
501 | if (FS.hasAlternativeForm()) { |
502 | switch (FS.getConversionSpecifier().getKind()) { |
503 | default: |
504 | break; |
505 | |
506 | case analyze_format_string::ConversionSpecifier::oArg: |
507 | Size += 1; |
508 | break; |
509 | |
510 | case analyze_format_string::ConversionSpecifier::xArg: |
511 | case analyze_format_string::ConversionSpecifier::XArg: |
512 | Size += 2; |
513 | break; |
514 | |
515 | case analyze_format_string::ConversionSpecifier::aArg: |
516 | case analyze_format_string::ConversionSpecifier::AArg: |
517 | case analyze_format_string::ConversionSpecifier::eArg: |
518 | case analyze_format_string::ConversionSpecifier::EArg: |
519 | case analyze_format_string::ConversionSpecifier::fArg: |
520 | case analyze_format_string::ConversionSpecifier::FArg: |
521 | case analyze_format_string::ConversionSpecifier::gArg: |
522 | case analyze_format_string::ConversionSpecifier::GArg: |
523 | Size += (Precision ? 0 : 1); |
524 | break; |
525 | } |
526 | } |
527 | assert(SpecifierLen <= Size && "no underflow"); |
528 | Size -= SpecifierLen; |
529 | return true; |
530 | } |
531 | |
532 | size_t getSizeLowerBound() const { return Size; } |
533 | |
534 | private: |
535 | static size_t computeFieldWidth(const analyze_printf::PrintfSpecifier &FS) { |
536 | const analyze_format_string::OptionalAmount &FW = FS.getFieldWidth(); |
537 | size_t FieldWidth = 0; |
538 | if (FW.getHowSpecified() == analyze_format_string::OptionalAmount::Constant) |
539 | FieldWidth = FW.getConstantAmount(); |
540 | return FieldWidth; |
541 | } |
542 | |
543 | static size_t computePrecision(const analyze_printf::PrintfSpecifier &FS) { |
544 | const analyze_format_string::OptionalAmount &FW = FS.getPrecision(); |
545 | size_t Precision = 0; |
546 | |
547 | |
548 | switch (FW.getHowSpecified()) { |
549 | case analyze_format_string::OptionalAmount::NotSpecified: |
550 | switch (FS.getConversionSpecifier().getKind()) { |
551 | default: |
552 | break; |
553 | case analyze_format_string::ConversionSpecifier::dArg: |
554 | case analyze_format_string::ConversionSpecifier::DArg: |
555 | case analyze_format_string::ConversionSpecifier::iArg: |
556 | Precision = 1; |
557 | break; |
558 | case analyze_format_string::ConversionSpecifier::oArg: |
559 | case analyze_format_string::ConversionSpecifier::OArg: |
560 | case analyze_format_string::ConversionSpecifier::uArg: |
561 | case analyze_format_string::ConversionSpecifier::UArg: |
562 | case analyze_format_string::ConversionSpecifier::xArg: |
563 | case analyze_format_string::ConversionSpecifier::XArg: |
564 | Precision = 1; |
565 | break; |
566 | case analyze_format_string::ConversionSpecifier::fArg: |
567 | case analyze_format_string::ConversionSpecifier::FArg: |
568 | case analyze_format_string::ConversionSpecifier::eArg: |
569 | case analyze_format_string::ConversionSpecifier::EArg: |
570 | case analyze_format_string::ConversionSpecifier::gArg: |
571 | case analyze_format_string::ConversionSpecifier::GArg: |
572 | Precision = 6; |
573 | break; |
574 | case analyze_format_string::ConversionSpecifier::pArg: |
575 | Precision = 1; |
576 | break; |
577 | } |
578 | break; |
579 | case analyze_format_string::OptionalAmount::Constant: |
580 | Precision = FW.getConstantAmount(); |
581 | break; |
582 | default: |
583 | break; |
584 | } |
585 | return Precision; |
586 | } |
587 | }; |
588 | |
589 | } |
590 | |
591 | void Sema::checkFortifiedBuiltinMemoryFunction(FunctionDecl *FD, |
592 | CallExpr *TheCall) { |
593 | if (TheCall->isValueDependent() || TheCall->isTypeDependent() || |
594 | isConstantEvaluated()) |
595 | return; |
596 | |
597 | unsigned BuiltinID = FD->getBuiltinID(true); |
598 | if (!BuiltinID) |
599 | return; |
600 | |
601 | const TargetInfo &TI = getASTContext().getTargetInfo(); |
602 | unsigned SizeTypeWidth = TI.getTypeWidth(TI.getSizeType()); |
603 | |
604 | auto ComputeExplicitObjectSizeArgument = |
605 | [&](unsigned Index) -> Optional<llvm::APSInt> { |
606 | Expr::EvalResult Result; |
607 | Expr *SizeArg = TheCall->getArg(Index); |
608 | if (!SizeArg->EvaluateAsInt(Result, getASTContext())) |
609 | return llvm::None; |
610 | return Result.Val.getInt(); |
611 | }; |
612 | |
613 | auto ComputeSizeArgument = [&](unsigned Index) -> Optional<llvm::APSInt> { |
614 | |
615 | |
616 | |
617 | int BOSType = 0; |
618 | if (const auto *POS = |
619 | FD->getParamDecl(Index)->getAttr<PassObjectSizeAttr>()) |
620 | BOSType = POS->getType(); |
621 | |
622 | const Expr *ObjArg = TheCall->getArg(Index); |
623 | uint64_t Result; |
624 | if (!ObjArg->tryEvaluateObjectSize(Result, getASTContext(), BOSType)) |
625 | return llvm::None; |
626 | |
627 | |
628 | return llvm::APSInt::getUnsigned(Result).extOrTrunc(SizeTypeWidth); |
629 | }; |
630 | |
631 | auto ComputeStrLenArgument = [&](unsigned Index) -> Optional<llvm::APSInt> { |
632 | Expr *ObjArg = TheCall->getArg(Index); |
633 | uint64_t Result; |
634 | if (!ObjArg->tryEvaluateStrLen(Result, getASTContext())) |
635 | return llvm::None; |
636 | |
637 | return llvm::APSInt::getUnsigned(Result + 1).extOrTrunc(SizeTypeWidth); |
638 | }; |
639 | |
640 | Optional<llvm::APSInt> SourceSize; |
641 | Optional<llvm::APSInt> DestinationSize; |
642 | unsigned DiagID = 0; |
643 | bool IsChkVariant = false; |
644 | |
645 | switch (BuiltinID) { |
646 | default: |
647 | return; |
648 | case Builtin::BI__builtin_strcpy: |
649 | case Builtin::BIstrcpy: { |
650 | DiagID = diag::warn_fortify_strlen_overflow; |
651 | SourceSize = ComputeStrLenArgument(1); |
652 | DestinationSize = ComputeSizeArgument(0); |
653 | break; |
654 | } |
655 | |
656 | case Builtin::BI__builtin___strcpy_chk: { |
657 | DiagID = diag::warn_fortify_strlen_overflow; |
658 | SourceSize = ComputeStrLenArgument(1); |
659 | DestinationSize = ComputeExplicitObjectSizeArgument(2); |
660 | IsChkVariant = true; |
661 | break; |
662 | } |
663 | |
664 | case Builtin::BIsprintf: |
665 | case Builtin::BI__builtin___sprintf_chk: { |
666 | size_t FormatIndex = BuiltinID == Builtin::BIsprintf ? 1 : 3; |
667 | auto *FormatExpr = TheCall->getArg(FormatIndex)->IgnoreParenImpCasts(); |
668 | |
669 | if (auto *Format = dyn_cast<StringLiteral>(FormatExpr)) { |
670 | |
671 | if (!Format->isAscii() && !Format->isUTF8()) |
672 | return; |
673 | |
674 | StringRef FormatStrRef = Format->getString(); |
675 | EstimateSizeFormatHandler H(FormatStrRef); |
676 | const char *FormatBytes = FormatStrRef.data(); |
677 | const ConstantArrayType *T = |
678 | Context.getAsConstantArrayType(Format->getType()); |
679 | assert(T && "String literal not of constant array type!"); |
680 | size_t TypeSize = T->getSize().getZExtValue(); |
681 | |
682 | |
683 | size_t StrLen = |
684 | std::min(std::max(TypeSize, size_t(1)) - 1, FormatStrRef.find(0)); |
685 | if (!analyze_format_string::ParsePrintfString( |
686 | H, FormatBytes, FormatBytes + StrLen, getLangOpts(), |
687 | Context.getTargetInfo(), false)) { |
688 | DiagID = diag::warn_fortify_source_format_overflow; |
689 | SourceSize = llvm::APSInt::getUnsigned(H.getSizeLowerBound()) |
690 | .extOrTrunc(SizeTypeWidth); |
691 | if (BuiltinID == Builtin::BI__builtin___sprintf_chk) { |
692 | DestinationSize = ComputeExplicitObjectSizeArgument(2); |
693 | IsChkVariant = true; |
694 | } else { |
695 | DestinationSize = ComputeSizeArgument(0); |
696 | } |
697 | break; |
698 | } |
699 | } |
700 | return; |
701 | } |
702 | case Builtin::BI__builtin___memcpy_chk: |
703 | case Builtin::BI__builtin___memmove_chk: |
704 | case Builtin::BI__builtin___memset_chk: |
705 | |
706 | |
707 | case Builtin::BI__builtin___strncat_chk: |
708 | case Builtin::BI__builtin___strncpy_chk: |
709 | case Builtin::BI__builtin___stpncpy_chk: |
710 | case Builtin::BI__builtin___memccpy_chk: |
711 | case Builtin::BI__builtin___mempcpy_chk: { |
712 | DiagID = diag::warn_builtin_chk_overflow; |
713 | SourceSize = ComputeExplicitObjectSizeArgument(TheCall->getNumArgs() - 2); |
714 | DestinationSize = |
715 | ComputeExplicitObjectSizeArgument(TheCall->getNumArgs() - 1); |
716 | IsChkVariant = true; |
717 | break; |
718 | } |
719 | |
720 | case Builtin::BI__builtin___snprintf_chk: |
721 | case Builtin::BI__builtin___vsnprintf_chk: { |
722 | DiagID = diag::warn_builtin_chk_overflow; |
723 | SourceSize = ComputeExplicitObjectSizeArgument(1); |
724 | DestinationSize = ComputeExplicitObjectSizeArgument(3); |
725 | IsChkVariant = true; |
726 | break; |
727 | } |
728 | |
729 | case Builtin::BIstrncat: |
730 | case Builtin::BI__builtin_strncat: |
731 | case Builtin::BIstrncpy: |
732 | case Builtin::BI__builtin_strncpy: |
733 | case Builtin::BIstpncpy: |
734 | case Builtin::BI__builtin_stpncpy: { |
735 | |
736 | |
737 | |
738 | |
739 | |
740 | DiagID = diag::warn_fortify_source_size_mismatch; |
741 | SourceSize = ComputeExplicitObjectSizeArgument(TheCall->getNumArgs() - 1); |
742 | DestinationSize = ComputeSizeArgument(0); |
743 | break; |
744 | } |
745 | |
746 | case Builtin::BImemcpy: |
747 | case Builtin::BI__builtin_memcpy: |
748 | case Builtin::BImemmove: |
749 | case Builtin::BI__builtin_memmove: |
750 | case Builtin::BImemset: |
751 | case Builtin::BI__builtin_memset: |
752 | case Builtin::BImempcpy: |
753 | case Builtin::BI__builtin_mempcpy: { |
754 | DiagID = diag::warn_fortify_source_overflow; |
755 | SourceSize = ComputeExplicitObjectSizeArgument(TheCall->getNumArgs() - 1); |
756 | DestinationSize = ComputeSizeArgument(0); |
757 | break; |
758 | } |
759 | case Builtin::BIsnprintf: |
760 | case Builtin::BI__builtin_snprintf: |
761 | case Builtin::BIvsnprintf: |
762 | case Builtin::BI__builtin_vsnprintf: { |
763 | DiagID = diag::warn_fortify_source_size_mismatch; |
764 | SourceSize = ComputeExplicitObjectSizeArgument(1); |
765 | DestinationSize = ComputeSizeArgument(0); |
766 | break; |
767 | } |
768 | } |
769 | |
770 | if (!SourceSize || !DestinationSize || |
771 | SourceSize.getValue().ule(DestinationSize.getValue())) |
772 | return; |
773 | |
774 | StringRef FunctionName = getASTContext().BuiltinInfo.getName(BuiltinID); |
775 | |
776 | |
777 | if (IsChkVariant) { |
778 | FunctionName = FunctionName.drop_front(std::strlen("__builtin___")); |
779 | FunctionName = FunctionName.drop_back(std::strlen("_chk")); |
780 | } else if (FunctionName.startswith("__builtin_")) { |
781 | FunctionName = FunctionName.drop_front(std::strlen("__builtin_")); |
782 | } |
783 | |
784 | SmallString<16> DestinationStr; |
785 | SmallString<16> SourceStr; |
786 | DestinationSize->toString(DestinationStr, 10); |
787 | SourceSize->toString(SourceStr, 10); |
788 | DiagRuntimeBehavior(TheCall->getBeginLoc(), TheCall, |
789 | PDiag(DiagID) |
790 | << FunctionName << DestinationStr << SourceStr); |
791 | } |
792 | |
793 | static bool SemaBuiltinSEHScopeCheck(Sema &SemaRef, CallExpr *TheCall, |
794 | Scope::ScopeFlags NeededScopeFlags, |
795 | unsigned DiagID) { |
796 | |
797 | |
798 | |
799 | if (SemaRef.inTemplateInstantiation()) |
800 | return false; |
801 | |
802 | Scope *S = SemaRef.getCurScope(); |
803 | while (S && !S->isSEHExceptScope()) |
804 | S = S->getParent(); |
805 | if (!S || !(S->getFlags() & NeededScopeFlags)) { |
806 | auto *DRE = cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
807 | SemaRef.Diag(TheCall->getExprLoc(), DiagID) |
808 | << DRE->getDecl()->getIdentifier(); |
809 | return true; |
810 | } |
811 | |
812 | return false; |
813 | } |
814 | |
815 | static inline bool isBlockPointer(Expr *Arg) { |
816 | return Arg->getType()->isBlockPointerType(); |
817 | } |
818 | |
819 | |
820 | |
821 | static bool checkOpenCLBlockArgs(Sema &S, Expr *BlockArg) { |
822 | const BlockPointerType *BPT = |
823 | cast<BlockPointerType>(BlockArg->getType().getCanonicalType()); |
824 | ArrayRef<QualType> Params = |
825 | BPT->getPointeeType()->castAs<FunctionProtoType>()->getParamTypes(); |
826 | unsigned ArgCounter = 0; |
827 | bool IllegalParams = false; |
828 | |
829 | |
830 | for (ArrayRef<QualType>::iterator I = Params.begin(), E = Params.end(); |
831 | I != E; ++I, ++ArgCounter) { |
832 | if (!(*I)->isPointerType() || !(*I)->getPointeeType()->isVoidType() || |
833 | (*I)->getPointeeType().getQualifiers().getAddressSpace() != |
834 | LangAS::opencl_local) { |
835 | |
836 | |
837 | |
838 | SourceLocation ErrorLoc; |
839 | if (isa<BlockExpr>(BlockArg)) { |
840 | BlockDecl *BD = cast<BlockExpr>(BlockArg)->getBlockDecl(); |
841 | ErrorLoc = BD->getParamDecl(ArgCounter)->getBeginLoc(); |
842 | } else if (isa<DeclRefExpr>(BlockArg)) { |
843 | ErrorLoc = cast<DeclRefExpr>(BlockArg)->getBeginLoc(); |
844 | } |
845 | S.Diag(ErrorLoc, |
846 | diag::err_opencl_enqueue_kernel_blocks_non_local_void_args); |
847 | IllegalParams = true; |
848 | } |
849 | } |
850 | |
851 | return IllegalParams; |
852 | } |
853 | |
854 | static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) { |
855 | if (!S.getOpenCLOptions().isSupported("cl_khr_subgroups", S.getLangOpts())) { |
856 | S.Diag(Call->getBeginLoc(), diag::err_opencl_requires_extension) |
857 | << 1 << Call->getDirectCallee() << "cl_khr_subgroups"; |
858 | return true; |
859 | } |
860 | return false; |
861 | } |
862 | |
863 | static bool SemaOpenCLBuiltinNDRangeAndBlock(Sema &S, CallExpr *TheCall) { |
864 | if (checkArgCount(S, TheCall, 2)) |
865 | return true; |
866 | |
867 | if (checkOpenCLSubgroupExt(S, TheCall)) |
868 | return true; |
869 | |
870 | |
871 | Expr *NDRangeArg = TheCall->getArg(0); |
872 | if (NDRangeArg->getType().getUnqualifiedType().getAsString() != "ndrange_t") { |
873 | S.Diag(NDRangeArg->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
874 | << TheCall->getDirectCallee() << "'ndrange_t'"; |
875 | return true; |
876 | } |
877 | |
878 | Expr *BlockArg = TheCall->getArg(1); |
879 | if (!isBlockPointer(BlockArg)) { |
880 | S.Diag(BlockArg->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
881 | << TheCall->getDirectCallee() << "block"; |
882 | return true; |
883 | } |
884 | return checkOpenCLBlockArgs(S, BlockArg); |
885 | } |
886 | |
887 | |
888 | |
889 | |
890 | static bool SemaOpenCLBuiltinKernelWorkGroupSize(Sema &S, CallExpr *TheCall) { |
891 | if (checkArgCount(S, TheCall, 1)) |
892 | return true; |
893 | |
894 | Expr *BlockArg = TheCall->getArg(0); |
895 | if (!isBlockPointer(BlockArg)) { |
896 | S.Diag(BlockArg->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
897 | << TheCall->getDirectCallee() << "block"; |
898 | return true; |
899 | } |
900 | return checkOpenCLBlockArgs(S, BlockArg); |
901 | } |
902 | |
903 | |
904 | static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, |
905 | const QualType &IntType); |
906 | |
907 | static bool checkOpenCLEnqueueLocalSizeArgs(Sema &S, CallExpr *TheCall, |
908 | unsigned Start, unsigned End) { |
909 | bool IllegalParams = false; |
910 | for (unsigned I = Start; I <= End; ++I) |
911 | IllegalParams |= checkOpenCLEnqueueIntType(S, TheCall->getArg(I), |
912 | S.Context.getSizeType()); |
913 | return IllegalParams; |
914 | } |
915 | |
916 | |
917 | |
918 | static bool checkOpenCLEnqueueVariadicArgs(Sema &S, CallExpr *TheCall, |
919 | Expr *BlockArg, |
920 | unsigned NumNonVarArgs) { |
921 | const BlockPointerType *BPT = |
922 | cast<BlockPointerType>(BlockArg->getType().getCanonicalType()); |
923 | unsigned NumBlockParams = |
924 | BPT->getPointeeType()->castAs<FunctionProtoType>()->getNumParams(); |
925 | unsigned TotalNumArgs = TheCall->getNumArgs(); |
926 | |
927 | |
928 | |
929 | if (TotalNumArgs != NumBlockParams + NumNonVarArgs) { |
930 | S.Diag(TheCall->getBeginLoc(), |
931 | diag::err_opencl_enqueue_kernel_local_size_args); |
932 | return true; |
933 | } |
934 | |
935 | |
936 | return checkOpenCLEnqueueLocalSizeArgs(S, TheCall, NumNonVarArgs, |
937 | TotalNumArgs - 1); |
938 | } |
939 | |
940 | |
941 | |
942 | |
943 | |
944 | |
945 | |
946 | |
947 | |
948 | |
949 | |
950 | |
951 | |
952 | |
953 | |
954 | |
955 | |
956 | |
957 | |
958 | |
959 | |
960 | |
961 | |
962 | |
963 | |
964 | |
965 | |
966 | static bool SemaOpenCLBuiltinEnqueueKernel(Sema &S, CallExpr *TheCall) { |
967 | unsigned NumArgs = TheCall->getNumArgs(); |
968 | |
969 | if (NumArgs < 4) { |
970 | S.Diag(TheCall->getBeginLoc(), |
971 | diag::err_typecheck_call_too_few_args_at_least) |
972 | << 0 << 4 << NumArgs; |
973 | return true; |
974 | } |
975 | |
976 | Expr *Arg0 = TheCall->getArg(0); |
977 | Expr *Arg1 = TheCall->getArg(1); |
978 | Expr *Arg2 = TheCall->getArg(2); |
979 | Expr *Arg3 = TheCall->getArg(3); |
980 | |
981 | |
982 | if (!Arg0->getType()->isQueueT()) { |
983 | S.Diag(TheCall->getArg(0)->getBeginLoc(), |
984 | diag::err_opencl_builtin_expected_type) |
985 | << TheCall->getDirectCallee() << S.Context.OCLQueueTy; |
986 | return true; |
987 | } |
988 | |
989 | |
990 | if (!Arg1->getType()->isIntegerType()) { |
991 | S.Diag(TheCall->getArg(1)->getBeginLoc(), |
992 | diag::err_opencl_builtin_expected_type) |
993 | << TheCall->getDirectCallee() << "'kernel_enqueue_flags_t' (i.e. uint)"; |
994 | return true; |
995 | } |
996 | |
997 | |
998 | if (Arg2->getType().getUnqualifiedType().getAsString() != "ndrange_t") { |
999 | S.Diag(TheCall->getArg(2)->getBeginLoc(), |
1000 | diag::err_opencl_builtin_expected_type) |
1001 | << TheCall->getDirectCallee() << "'ndrange_t'"; |
1002 | return true; |
1003 | } |
1004 | |
1005 | |
1006 | |
1007 | if (NumArgs == 4) { |
1008 | |
1009 | if (!isBlockPointer(Arg3)) { |
1010 | S.Diag(Arg3->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
1011 | << TheCall->getDirectCallee() << "block"; |
1012 | return true; |
1013 | } |
1014 | |
1015 | const BlockPointerType *BPT = |
1016 | cast<BlockPointerType>(Arg3->getType().getCanonicalType()); |
1017 | if (BPT->getPointeeType()->castAs<FunctionProtoType>()->getNumParams() > 0) { |
1018 | S.Diag(Arg3->getBeginLoc(), |
1019 | diag::err_opencl_enqueue_kernel_blocks_no_args); |
1020 | return true; |
1021 | } |
1022 | return false; |
1023 | } |
1024 | |
1025 | if (isBlockPointer(Arg3)) |
1026 | return (checkOpenCLBlockArgs(S, Arg3) || |
1027 | checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg3, 4)); |
1028 | |
1029 | if (NumArgs >= 7) { |
1030 | |
1031 | Expr *Arg6 = TheCall->getArg(6); |
1032 | if (!isBlockPointer(Arg6)) { |
1033 | S.Diag(Arg6->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
1034 | << TheCall->getDirectCallee() << "block"; |
1035 | return true; |
1036 | } |
1037 | if (checkOpenCLBlockArgs(S, Arg6)) |
1038 | return true; |
1039 | |
1040 | |
1041 | if (!Arg3->getType()->isIntegerType()) { |
1042 | S.Diag(TheCall->getArg(3)->getBeginLoc(), |
1043 | diag::err_opencl_builtin_expected_type) |
1044 | << TheCall->getDirectCallee() << "integer"; |
1045 | return true; |
1046 | } |
1047 | |
1048 | Expr *Arg4 = TheCall->getArg(4); |
1049 | Expr *Arg5 = TheCall->getArg(5); |
1050 | |
1051 | |
1052 | if (!Arg4->isNullPointerConstant(S.Context, |
1053 | Expr::NPC_ValueDependentIsNotNull) && |
1054 | !Arg4->getType()->getPointeeOrArrayElementType()->isClkEventT()) { |
1055 | S.Diag(TheCall->getArg(4)->getBeginLoc(), |
1056 | diag::err_opencl_builtin_expected_type) |
1057 | << TheCall->getDirectCallee() |
1058 | << S.Context.getPointerType(S.Context.OCLClkEventTy); |
1059 | return true; |
1060 | } |
1061 | |
1062 | |
1063 | if (!Arg5->isNullPointerConstant(S.Context, |
1064 | Expr::NPC_ValueDependentIsNotNull) && |
1065 | !(Arg5->getType()->isPointerType() && |
1066 | Arg5->getType()->getPointeeType()->isClkEventT())) { |
1067 | S.Diag(TheCall->getArg(5)->getBeginLoc(), |
1068 | diag::err_opencl_builtin_expected_type) |
1069 | << TheCall->getDirectCallee() |
1070 | << S.Context.getPointerType(S.Context.OCLClkEventTy); |
1071 | return true; |
1072 | } |
1073 | |
1074 | if (NumArgs == 7) |
1075 | return false; |
1076 | |
1077 | return checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg6, 7); |
1078 | } |
1079 | |
1080 | |
1081 | S.Diag(TheCall->getBeginLoc(), |
1082 | diag::err_opencl_enqueue_kernel_incorrect_args); |
1083 | return true; |
1084 | } |
1085 | |
1086 | |
1087 | static OpenCLAccessAttr *getOpenCLArgAccess(const Decl *D) { |
1088 | return D->getAttr<OpenCLAccessAttr>(); |
1089 | } |
1090 | |
1091 | |
1092 | static bool checkOpenCLPipeArg(Sema &S, CallExpr *Call) { |
1093 | const Expr *Arg0 = Call->getArg(0); |
1094 | |
1095 | if (!Arg0->getType()->isPipeType()) { |
1096 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_first_arg) |
1097 | << Call->getDirectCallee() << Arg0->getSourceRange(); |
1098 | return true; |
1099 | } |
1100 | OpenCLAccessAttr *AccessQual = |
1101 | getOpenCLArgAccess(cast<DeclRefExpr>(Arg0)->getDecl()); |
1102 | |
1103 | |
1104 | |
1105 | |
1106 | switch (Call->getDirectCallee()->getBuiltinID()) { |
1107 | case Builtin::BIread_pipe: |
1108 | case Builtin::BIreserve_read_pipe: |
1109 | case Builtin::BIcommit_read_pipe: |
1110 | case Builtin::BIwork_group_reserve_read_pipe: |
1111 | case Builtin::BIsub_group_reserve_read_pipe: |
1112 | case Builtin::BIwork_group_commit_read_pipe: |
1113 | case Builtin::BIsub_group_commit_read_pipe: |
1114 | if (!(!AccessQual || AccessQual->isReadOnly())) { |
1115 | S.Diag(Arg0->getBeginLoc(), |
1116 | diag::err_opencl_builtin_pipe_invalid_access_modifier) |
1117 | << "read_only" << Arg0->getSourceRange(); |
1118 | return true; |
1119 | } |
1120 | break; |
1121 | case Builtin::BIwrite_pipe: |
1122 | case Builtin::BIreserve_write_pipe: |
1123 | case Builtin::BIcommit_write_pipe: |
1124 | case Builtin::BIwork_group_reserve_write_pipe: |
1125 | case Builtin::BIsub_group_reserve_write_pipe: |
1126 | case Builtin::BIwork_group_commit_write_pipe: |
1127 | case Builtin::BIsub_group_commit_write_pipe: |
1128 | if (!(AccessQual && AccessQual->isWriteOnly())) { |
1129 | S.Diag(Arg0->getBeginLoc(), |
1130 | diag::err_opencl_builtin_pipe_invalid_access_modifier) |
1131 | << "write_only" << Arg0->getSourceRange(); |
1132 | return true; |
1133 | } |
1134 | break; |
1135 | default: |
1136 | break; |
1137 | } |
1138 | return false; |
1139 | } |
1140 | |
1141 | |
1142 | static bool checkOpenCLPipePacketType(Sema &S, CallExpr *Call, unsigned Idx) { |
1143 | const Expr *Arg0 = Call->getArg(0); |
1144 | const Expr *ArgIdx = Call->getArg(Idx); |
1145 | const PipeType *PipeTy = cast<PipeType>(Arg0->getType()); |
1146 | const QualType EltTy = PipeTy->getElementType(); |
1147 | const PointerType *ArgTy = ArgIdx->getType()->getAs<PointerType>(); |
1148 | |
1149 | |
1150 | if (!ArgTy || |
1151 | !S.Context.hasSameType( |
1152 | EltTy, ArgTy->getPointeeType()->getCanonicalTypeInternal())) { |
1153 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1154 | << Call->getDirectCallee() << S.Context.getPointerType(EltTy) |
1155 | << ArgIdx->getType() << ArgIdx->getSourceRange(); |
1156 | return true; |
1157 | } |
1158 | return false; |
1159 | } |
1160 | |
1161 | |
1162 | |
1163 | |
1164 | |
1165 | static bool SemaBuiltinRWPipe(Sema &S, CallExpr *Call) { |
1166 | |
1167 | |
1168 | switch (Call->getNumArgs()) { |
1169 | case 2: |
1170 | if (checkOpenCLPipeArg(S, Call)) |
1171 | return true; |
1172 | |
1173 | |
1174 | |
1175 | if (checkOpenCLPipePacketType(S, Call, 1)) |
1176 | return true; |
1177 | break; |
1178 | |
1179 | case 4: { |
1180 | if (checkOpenCLPipeArg(S, Call)) |
1181 | return true; |
1182 | |
1183 | |
1184 | |
1185 | if (!Call->getArg(1)->getType()->isReserveIDT()) { |
1186 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1187 | << Call->getDirectCallee() << S.Context.OCLReserveIDTy |
1188 | << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); |
1189 | return true; |
1190 | } |
1191 | |
1192 | |
1193 | const Expr *Arg2 = Call->getArg(2); |
1194 | if (!Arg2->getType()->isIntegerType() && |
1195 | !Arg2->getType()->isUnsignedIntegerType()) { |
1196 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1197 | << Call->getDirectCallee() << S.Context.UnsignedIntTy |
1198 | << Arg2->getType() << Arg2->getSourceRange(); |
1199 | return true; |
1200 | } |
1201 | |
1202 | |
1203 | if (checkOpenCLPipePacketType(S, Call, 3)) |
1204 | return true; |
1205 | } break; |
1206 | default: |
1207 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_arg_num) |
1208 | << Call->getDirectCallee() << Call->getSourceRange(); |
1209 | return true; |
1210 | } |
1211 | |
1212 | return false; |
1213 | } |
1214 | |
1215 | |
1216 | |
1217 | |
1218 | |
1219 | |
1220 | static bool SemaBuiltinReserveRWPipe(Sema &S, CallExpr *Call) { |
1221 | if (checkArgCount(S, Call, 2)) |
1222 | return true; |
1223 | |
1224 | if (checkOpenCLPipeArg(S, Call)) |
1225 | return true; |
1226 | |
1227 | |
1228 | if (!Call->getArg(1)->getType()->isIntegerType() && |
1229 | !Call->getArg(1)->getType()->isUnsignedIntegerType()) { |
1230 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1231 | << Call->getDirectCallee() << S.Context.UnsignedIntTy |
1232 | << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); |
1233 | return true; |
1234 | } |
1235 | |
1236 | |
1237 | |
1238 | |
1239 | Call->setType(S.Context.OCLReserveIDTy); |
1240 | |
1241 | return false; |
1242 | } |
1243 | |
1244 | |
1245 | |
1246 | |
1247 | |
1248 | |
1249 | static bool SemaBuiltinCommitRWPipe(Sema &S, CallExpr *Call) { |
1250 | if (checkArgCount(S, Call, 2)) |
1251 | return true; |
1252 | |
1253 | if (checkOpenCLPipeArg(S, Call)) |
1254 | return true; |
1255 | |
1256 | |
1257 | if (!Call->getArg(1)->getType()->isReserveIDT()) { |
1258 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1259 | << Call->getDirectCallee() << S.Context.OCLReserveIDTy |
1260 | << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); |
1261 | return true; |
1262 | } |
1263 | |
1264 | return false; |
1265 | } |
1266 | |
1267 | |
1268 | |
1269 | |
1270 | |
1271 | |
1272 | static bool SemaBuiltinPipePackets(Sema &S, CallExpr *Call) { |
1273 | if (checkArgCount(S, Call, 1)) |
1274 | return true; |
1275 | |
1276 | if (!Call->getArg(0)->getType()->isPipeType()) { |
1277 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_first_arg) |
1278 | << Call->getDirectCallee() << Call->getArg(0)->getSourceRange(); |
1279 | return true; |
1280 | } |
1281 | |
1282 | return false; |
1283 | } |
1284 | |
1285 | |
1286 | |
1287 | |
1288 | |
1289 | |
1290 | |
1291 | static bool SemaOpenCLBuiltinToAddr(Sema &S, unsigned BuiltinID, |
1292 | CallExpr *Call) { |
1293 | if (checkArgCount(S, Call, 1)) |
1294 | return true; |
1295 | |
1296 | auto RT = Call->getArg(0)->getType(); |
1297 | if (!RT->isPointerType() || RT->getPointeeType() |
1298 | .getAddressSpace() == LangAS::opencl_constant) { |
1299 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_to_addr_invalid_arg) |
1300 | << Call->getArg(0) << Call->getDirectCallee() << Call->getSourceRange(); |
1301 | return true; |
1302 | } |
1303 | |
1304 | if (RT->getPointeeType().getAddressSpace() != LangAS::opencl_generic) { |
1305 | S.Diag(Call->getArg(0)->getBeginLoc(), |
1306 | diag::warn_opencl_generic_address_space_arg) |
1307 | << Call->getDirectCallee()->getNameInfo().getAsString() |
1308 | << Call->getArg(0)->getSourceRange(); |
1309 | } |
1310 | |
1311 | RT = RT->getPointeeType(); |
1312 | auto Qual = RT.getQualifiers(); |
1313 | switch (BuiltinID) { |
1314 | case Builtin::BIto_global: |
1315 | Qual.setAddressSpace(LangAS::opencl_global); |
1316 | break; |
1317 | case Builtin::BIto_local: |
1318 | Qual.setAddressSpace(LangAS::opencl_local); |
1319 | break; |
1320 | case Builtin::BIto_private: |
1321 | Qual.setAddressSpace(LangAS::opencl_private); |
1322 | break; |
1323 | default: |
1324 | llvm_unreachable("Invalid builtin function"); |
1325 | } |
1326 | Call->setType(S.Context.getPointerType(S.Context.getQualifiedType( |
1327 | RT.getUnqualifiedType(), Qual))); |
1328 | |
1329 | return false; |
1330 | } |
1331 | |
1332 | static ExprResult SemaBuiltinLaunder(Sema &S, CallExpr *TheCall) { |
1333 | if (checkArgCount(S, TheCall, 1)) |
1334 | return ExprError(); |
1335 | |
1336 | |
1337 | |
1338 | |
1339 | |
1340 | |
1341 | QualType ParamTy = [&]() { |
1342 | QualType ArgTy = TheCall->getArg(0)->getType(); |
1343 | if (const ArrayType *Ty = ArgTy->getAsArrayTypeUnsafe()) |
1344 | return S.Context.getPointerType(Ty->getElementType()); |
1345 | if (ArgTy->isFunctionType()) { |
1346 | return S.Context.getPointerType(ArgTy); |
1347 | } |
1348 | return ArgTy; |
1349 | }(); |
1350 | |
1351 | TheCall->setType(ParamTy); |
1352 | |
1353 | auto DiagSelect = [&]() -> llvm::Optional<unsigned> { |
1354 | if (!ParamTy->isPointerType()) |
1355 | return 0; |
1356 | if (ParamTy->isFunctionPointerType()) |
1357 | return 1; |
1358 | if (ParamTy->isVoidPointerType()) |
1359 | return 2; |
1360 | return llvm::Optional<unsigned>{}; |
1361 | }(); |
1362 | if (DiagSelect.hasValue()) { |
1363 | S.Diag(TheCall->getBeginLoc(), diag::err_builtin_launder_invalid_arg) |
1364 | << DiagSelect.getValue() << TheCall->getSourceRange(); |
1365 | return ExprError(); |
1366 | } |
1367 | |
1368 | |
1369 | |
1370 | |
1371 | |
1372 | |
1373 | |
1374 | if (S.RequireCompleteType(TheCall->getBeginLoc(), ParamTy->getPointeeType(), |
1375 | diag::err_incomplete_type)) |
1376 | return ExprError(); |
1377 | |
1378 | assert(ParamTy->getPointeeType()->isObjectType() && |
1379 | "Unhandled non-object pointer case"); |
1380 | |
1381 | InitializedEntity Entity = |
1382 | InitializedEntity::InitializeParameter(S.Context, ParamTy, false); |
1383 | ExprResult Arg = |
1384 | S.PerformCopyInitialization(Entity, SourceLocation(), TheCall->getArg(0)); |
1385 | if (Arg.isInvalid()) |
1386 | return ExprError(); |
1387 | TheCall->setArg(0, Arg.get()); |
1388 | |
1389 | return TheCall; |
1390 | } |
1391 | |
1392 | |
1393 | |
1394 | static bool |
1395 | CheckBuiltinTargetSupport(Sema &S, unsigned BuiltinID, CallExpr *TheCall, |
1396 | ArrayRef<llvm::Triple::ArchType> SupportedArchs) { |
1397 | llvm::Triple::ArchType CurArch = |
1398 | S.getASTContext().getTargetInfo().getTriple().getArch(); |
1399 | if (llvm::is_contained(SupportedArchs, CurArch)) |
1400 | return false; |
1401 | S.Diag(TheCall->getBeginLoc(), diag::err_builtin_target_unsupported) |
1402 | << TheCall->getSourceRange(); |
1403 | return true; |
1404 | } |
1405 | |
1406 | static void CheckNonNullArgument(Sema &S, const Expr *ArgExpr, |
1407 | SourceLocation CallSiteLoc); |
1408 | |
1409 | bool Sema::CheckTSBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
1410 | CallExpr *TheCall) { |
1411 | switch (TI.getTriple().getArch()) { |
1412 | default: |
1413 | |
1414 | |
1415 | return false; |
1416 | case llvm::Triple::arm: |
1417 | case llvm::Triple::armeb: |
1418 | case llvm::Triple::thumb: |
1419 | case llvm::Triple::thumbeb: |
1420 | return CheckARMBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1421 | case llvm::Triple::aarch64: |
1422 | case llvm::Triple::aarch64_32: |
1423 | case llvm::Triple::aarch64_be: |
1424 | return CheckAArch64BuiltinFunctionCall(TI, BuiltinID, TheCall); |
1425 | case llvm::Triple::bpfeb: |
1426 | case llvm::Triple::bpfel: |
1427 | return CheckBPFBuiltinFunctionCall(BuiltinID, TheCall); |
1428 | case llvm::Triple::hexagon: |
1429 | return CheckHexagonBuiltinFunctionCall(BuiltinID, TheCall); |
1430 | case llvm::Triple::mips: |
1431 | case llvm::Triple::mipsel: |
1432 | case llvm::Triple::mips64: |
1433 | case llvm::Triple::mips64el: |
1434 | return CheckMipsBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1435 | case llvm::Triple::systemz: |
1436 | return CheckSystemZBuiltinFunctionCall(BuiltinID, TheCall); |
1437 | case llvm::Triple::x86: |
1438 | case llvm::Triple::x86_64: |
1439 | return CheckX86BuiltinFunctionCall(TI, BuiltinID, TheCall); |
1440 | case llvm::Triple::ppc: |
1441 | case llvm::Triple::ppcle: |
1442 | case llvm::Triple::ppc64: |
1443 | case llvm::Triple::ppc64le: |
1444 | return CheckPPCBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1445 | case llvm::Triple::amdgcn: |
1446 | return CheckAMDGCNBuiltinFunctionCall(BuiltinID, TheCall); |
1447 | case llvm::Triple::riscv32: |
1448 | case llvm::Triple::riscv64: |
1449 | return CheckRISCVBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1450 | } |
1451 | } |
1452 | |
1453 | ExprResult |
1454 | Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID, |
1455 | CallExpr *TheCall) { |
1456 | ExprResult TheCallResult(TheCall); |
1457 | |
1458 | |
1459 | unsigned ICEArguments = 0; |
1460 | ASTContext::GetBuiltinTypeError Error; |
1461 | Context.GetBuiltinType(BuiltinID, Error, &ICEArguments); |
1462 | if (Error != ASTContext::GE_None) |
1463 | ICEArguments = 0; |
1464 | |
1465 | |
1466 | for (unsigned ArgNo = 0; ICEArguments != 0; ++ArgNo) { |
1467 | |
1468 | if ((ICEArguments & (1 << ArgNo)) == 0) continue; |
1469 | |
1470 | llvm::APSInt Result; |
1471 | if (SemaBuiltinConstantArg(TheCall, ArgNo, Result)) |
1472 | return true; |
1473 | ICEArguments &= ~(1 << ArgNo); |
1474 | } |
1475 | |
1476 | switch (BuiltinID) { |
1477 | case Builtin::BI__builtin___CFStringMakeConstantString: |
1478 | assert(TheCall->getNumArgs() == 1 && |
1479 | "Wrong # arguments to builtin CFStringMakeConstantString"); |
1480 | if (CheckObjCString(TheCall->getArg(0))) |
1481 | return ExprError(); |
1482 | break; |
1483 | case Builtin::BI__builtin_ms_va_start: |
1484 | case Builtin::BI__builtin_stdarg_start: |
1485 | case Builtin::BI__builtin_va_start: |
1486 | if (SemaBuiltinVAStart(BuiltinID, TheCall)) |
1487 | return ExprError(); |
1488 | break; |
1489 | case Builtin::BI__va_start: { |
1490 | switch (Context.getTargetInfo().getTriple().getArch()) { |
1491 | case llvm::Triple::aarch64: |
1492 | case llvm::Triple::arm: |
1493 | case llvm::Triple::thumb: |
1494 | if (SemaBuiltinVAStartARMMicrosoft(TheCall)) |
1495 | return ExprError(); |
1496 | break; |
1497 | default: |
1498 | if (SemaBuiltinVAStart(BuiltinID, TheCall)) |
1499 | return ExprError(); |
1500 | break; |
1501 | } |
1502 | break; |
1503 | } |
1504 | |
1505 | |
1506 | case Builtin::BI_interlockedbittestandset_acq: |
1507 | case Builtin::BI_interlockedbittestandset_rel: |
1508 | case Builtin::BI_interlockedbittestandset_nf: |
1509 | case Builtin::BI_interlockedbittestandreset_acq: |
1510 | case Builtin::BI_interlockedbittestandreset_rel: |
1511 | case Builtin::BI_interlockedbittestandreset_nf: |
1512 | if (CheckBuiltinTargetSupport( |
1513 | *this, BuiltinID, TheCall, |
1514 | {llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) |
1515 | return ExprError(); |
1516 | break; |
1517 | |
1518 | |
1519 | case Builtin::BI_bittest64: |
1520 | case Builtin::BI_bittestandcomplement64: |
1521 | case Builtin::BI_bittestandreset64: |
1522 | case Builtin::BI_bittestandset64: |
1523 | case Builtin::BI_interlockedbittestandreset64: |
1524 | case Builtin::BI_interlockedbittestandset64: |
1525 | if (CheckBuiltinTargetSupport(*this, BuiltinID, TheCall, |
1526 | {llvm::Triple::x86_64, llvm::Triple::arm, |
1527 | llvm::Triple::thumb, llvm::Triple::aarch64})) |
1528 | return ExprError(); |
1529 | break; |
1530 | |
1531 | case Builtin::BI__builtin_isgreater: |
1532 | case Builtin::BI__builtin_isgreaterequal: |
1533 | case Builtin::BI__builtin_isless: |
1534 | case Builtin::BI__builtin_islessequal: |
1535 | case Builtin::BI__builtin_islessgreater: |
1536 | case Builtin::BI__builtin_isunordered: |
1537 | if (SemaBuiltinUnorderedCompare(TheCall)) |
1538 | return ExprError(); |
1539 | break; |
1540 | case Builtin::BI__builtin_fpclassify: |
1541 | if (SemaBuiltinFPClassification(TheCall, 6)) |
1542 | return ExprError(); |
1543 | break; |
1544 | case Builtin::BI__builtin_isfinite: |
1545 | case Builtin::BI__builtin_isinf: |
1546 | case Builtin::BI__builtin_isinf_sign: |
1547 | case Builtin::BI__builtin_isnan: |
1548 | case Builtin::BI__builtin_isnormal: |
1549 | case Builtin::BI__builtin_signbit: |
1550 | case Builtin::BI__builtin_signbitf: |
1551 | case Builtin::BI__builtin_signbitl: |
1552 | if (SemaBuiltinFPClassification(TheCall, 1)) |
1553 | return ExprError(); |
1554 | break; |
1555 | case Builtin::BI__builtin_shufflevector: |
1556 | return SemaBuiltinShuffleVector(TheCall); |
1557 | |
1558 | |
1559 | case Builtin::BI__builtin_prefetch: |
1560 | if (SemaBuiltinPrefetch(TheCall)) |
1561 | return ExprError(); |
1562 | break; |
1563 | case Builtin::BI__builtin_alloca_with_align: |
1564 | if (SemaBuiltinAllocaWithAlign(TheCall)) |
1565 | return ExprError(); |
1566 | LLVM_FALLTHROUGH; |
1567 | case Builtin::BI__builtin_alloca: |
1568 | Diag(TheCall->getBeginLoc(), diag::warn_alloca) |
1569 | << TheCall->getDirectCallee(); |
1570 | break; |
1571 | case Builtin::BI__arithmetic_fence: |
1572 | if (SemaBuiltinArithmeticFence(TheCall)) |
1573 | return ExprError(); |
1574 | break; |
1575 | case Builtin::BI__assume: |
1576 | case Builtin::BI__builtin_assume: |
1577 | if (SemaBuiltinAssume(TheCall)) |
1578 | return ExprError(); |
1579 | break; |
1580 | case Builtin::BI__builtin_assume_aligned: |
1581 | if (SemaBuiltinAssumeAligned(TheCall)) |
1582 | return ExprError(); |
1583 | break; |
1584 | case Builtin::BI__builtin_dynamic_object_size: |
1585 | case Builtin::BI__builtin_object_size: |
1586 | if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3)) |
1587 | return ExprError(); |
1588 | break; |
1589 | case Builtin::BI__builtin_longjmp: |
1590 | if (SemaBuiltinLongjmp(TheCall)) |
1591 | return ExprError(); |
1592 | break; |
1593 | case Builtin::BI__builtin_setjmp: |
1594 | if (SemaBuiltinSetjmp(TheCall)) |
1595 | return ExprError(); |
1596 | break; |
1597 | case Builtin::BI__builtin_classify_type: |
1598 | if (checkArgCount(*this, TheCall, 1)) return true; |
1599 | TheCall->setType(Context.IntTy); |
1600 | break; |
1601 | case Builtin::BI__builtin_complex: |
1602 | if (SemaBuiltinComplex(TheCall)) |
1603 | return ExprError(); |
1604 | break; |
1605 | case Builtin::BI__builtin_constant_p: { |
1606 | if (checkArgCount(*this, TheCall, 1)) return true; |
1607 | ExprResult Arg = DefaultFunctionArrayLvalueConversion(TheCall->getArg(0)); |
1608 | if (Arg.isInvalid()) return true; |
1609 | TheCall->setArg(0, Arg.get()); |
1610 | TheCall->setType(Context.IntTy); |
1611 | break; |
1612 | } |
1613 | case Builtin::BI__builtin_launder: |
1614 | return SemaBuiltinLaunder(*this, TheCall); |
1615 | case Builtin::BI__sync_fetch_and_add: |
1616 | case Builtin::BI__sync_fetch_and_add_1: |
1617 | case Builtin::BI__sync_fetch_and_add_2: |
1618 | case Builtin::BI__sync_fetch_and_add_4: |
1619 | case Builtin::BI__sync_fetch_and_add_8: |
1620 | case Builtin::BI__sync_fetch_and_add_16: |
1621 | case Builtin::BI__sync_fetch_and_sub: |
1622 | case Builtin::BI__sync_fetch_and_sub_1: |
1623 | case Builtin::BI__sync_fetch_and_sub_2: |
1624 | case Builtin::BI__sync_fetch_and_sub_4: |
1625 | case Builtin::BI__sync_fetch_and_sub_8: |
1626 | case Builtin::BI__sync_fetch_and_sub_16: |
1627 | case Builtin::BI__sync_fetch_and_or: |
1628 | case Builtin::BI__sync_fetch_and_or_1: |
1629 | case Builtin::BI__sync_fetch_and_or_2: |
1630 | case Builtin::BI__sync_fetch_and_or_4: |
1631 | case Builtin::BI__sync_fetch_and_or_8: |
1632 | case Builtin::BI__sync_fetch_and_or_16: |
1633 | case Builtin::BI__sync_fetch_and_and: |
1634 | case Builtin::BI__sync_fetch_and_and_1: |
1635 | case Builtin::BI__sync_fetch_and_and_2: |
1636 | case Builtin::BI__sync_fetch_and_and_4: |
1637 | case Builtin::BI__sync_fetch_and_and_8: |
1638 | case Builtin::BI__sync_fetch_and_and_16: |
1639 | case Builtin::BI__sync_fetch_and_xor: |
1640 | case Builtin::BI__sync_fetch_and_xor_1: |
1641 | case Builtin::BI__sync_fetch_and_xor_2: |
1642 | case Builtin::BI__sync_fetch_and_xor_4: |
1643 | case Builtin::BI__sync_fetch_and_xor_8: |
1644 | case Builtin::BI__sync_fetch_and_xor_16: |
1645 | case Builtin::BI__sync_fetch_and_nand: |
1646 | case Builtin::BI__sync_fetch_and_nand_1: |
1647 | case Builtin::BI__sync_fetch_and_nand_2: |
1648 | case Builtin::BI__sync_fetch_and_nand_4: |
1649 | case Builtin::BI__sync_fetch_and_nand_8: |
1650 | case Builtin::BI__sync_fetch_and_nand_16: |
1651 | case Builtin::BI__sync_add_and_fetch: |
1652 | case Builtin::BI__sync_add_and_fetch_1: |
1653 | case Builtin::BI__sync_add_and_fetch_2: |
1654 | case Builtin::BI__sync_add_and_fetch_4: |
1655 | case Builtin::BI__sync_add_and_fetch_8: |
1656 | case Builtin::BI__sync_add_and_fetch_16: |
1657 | case Builtin::BI__sync_sub_and_fetch: |
1658 | case Builtin::BI__sync_sub_and_fetch_1: |
1659 | case Builtin::BI__sync_sub_and_fetch_2: |
1660 | case Builtin::BI__sync_sub_and_fetch_4: |
1661 | case Builtin::BI__sync_sub_and_fetch_8: |
1662 | case Builtin::BI__sync_sub_and_fetch_16: |
1663 | case Builtin::BI__sync_and_and_fetch: |
1664 | case Builtin::BI__sync_and_and_fetch_1: |
1665 | case Builtin::BI__sync_and_and_fetch_2: |
1666 | case Builtin::BI__sync_and_and_fetch_4: |
1667 | case Builtin::BI__sync_and_and_fetch_8: |
1668 | case Builtin::BI__sync_and_and_fetch_16: |
1669 | case Builtin::BI__sync_or_and_fetch: |
1670 | case Builtin::BI__sync_or_and_fetch_1: |
1671 | case Builtin::BI__sync_or_and_fetch_2: |
1672 | case Builtin::BI__sync_or_and_fetch_4: |
1673 | case Builtin::BI__sync_or_and_fetch_8: |
1674 | case Builtin::BI__sync_or_and_fetch_16: |
1675 | case Builtin::BI__sync_xor_and_fetch: |
1676 | case Builtin::BI__sync_xor_and_fetch_1: |
1677 | case Builtin::BI__sync_xor_and_fetch_2: |
1678 | case Builtin::BI__sync_xor_and_fetch_4: |
1679 | case Builtin::BI__sync_xor_and_fetch_8: |
1680 | case Builtin::BI__sync_xor_and_fetch_16: |
1681 | case Builtin::BI__sync_nand_and_fetch: |
1682 | case Builtin::BI__sync_nand_and_fetch_1: |
1683 | case Builtin::BI__sync_nand_and_fetch_2: |
1684 | case Builtin::BI__sync_nand_and_fetch_4: |
1685 | case Builtin::BI__sync_nand_and_fetch_8: |
1686 | case Builtin::BI__sync_nand_and_fetch_16: |
1687 | case Builtin::BI__sync_val_compare_and_swap: |
1688 | case Builtin::BI__sync_val_compare_and_swap_1: |
1689 | case Builtin::BI__sync_val_compare_and_swap_2: |
1690 | case Builtin::BI__sync_val_compare_and_swap_4: |
1691 | case Builtin::BI__sync_val_compare_and_swap_8: |
1692 | case Builtin::BI__sync_val_compare_and_swap_16: |
1693 | case Builtin::BI__sync_bool_compare_and_swap: |
1694 | case Builtin::BI__sync_bool_compare_and_swap_1: |
1695 | case Builtin::BI__sync_bool_compare_and_swap_2: |
1696 | case Builtin::BI__sync_bool_compare_and_swap_4: |
1697 | case Builtin::BI__sync_bool_compare_and_swap_8: |
1698 | case Builtin::BI__sync_bool_compare_and_swap_16: |
1699 | case Builtin::BI__sync_lock_test_and_set: |
1700 | case Builtin::BI__sync_lock_test_and_set_1: |
1701 | case Builtin::BI__sync_lock_test_and_set_2: |
1702 | case Builtin::BI__sync_lock_test_and_set_4: |
1703 | case Builtin::BI__sync_lock_test_and_set_8: |
1704 | case Builtin::BI__sync_lock_test_and_set_16: |
1705 | case Builtin::BI__sync_lock_release: |
1706 | case Builtin::BI__sync_lock_release_1: |
1707 | case Builtin::BI__sync_lock_release_2: |
1708 | case Builtin::BI__sync_lock_release_4: |
1709 | case Builtin::BI__sync_lock_release_8: |
1710 | case Builtin::BI__sync_lock_release_16: |
1711 | case Builtin::BI__sync_swap: |
1712 | case Builtin::BI__sync_swap_1: |
1713 | case Builtin::BI__sync_swap_2: |
1714 | case Builtin::BI__sync_swap_4: |
1715 | case Builtin::BI__sync_swap_8: |
1716 | case Builtin::BI__sync_swap_16: |
1717 | return SemaBuiltinAtomicOverloaded(TheCallResult); |
1718 | case Builtin::BI__sync_synchronize: |
1719 | Diag(TheCall->getBeginLoc(), diag::warn_atomic_implicit_seq_cst) |
1720 | << TheCall->getCallee()->getSourceRange(); |
1721 | break; |
1722 | case Builtin::BI__builtin_nontemporal_load: |
1723 | case Builtin::BI__builtin_nontemporal_store: |
1724 | return SemaBuiltinNontemporalOverloaded(TheCallResult); |
1725 | case Builtin::BI__builtin_memcpy_inline: { |
1726 | clang::Expr *SizeOp = TheCall->getArg(2); |
1727 | |
1728 | |
1729 | |
1730 | if (SizeOp->isValueDependent()) |
1731 | break; |
1732 | if (!SizeOp->EvaluateKnownConstInt(Context).isNullValue()) { |
1733 | CheckNonNullArgument(*this, TheCall->getArg(0), TheCall->getExprLoc()); |
1734 | CheckNonNullArgument(*this, TheCall->getArg(1), TheCall->getExprLoc()); |
1735 | } |
1736 | break; |
1737 | } |
1738 | #define BUILTIN(ID, TYPE, ATTRS) |
1739 | #define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \ |
1740 | case Builtin::BI##ID: \ |
1741 | return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID); |
1742 | #include "clang/Basic/Builtins.def" |
1743 | case Builtin::BI__annotation: |
1744 | if (SemaBuiltinMSVCAnnotation(*this, TheCall)) |
1745 | return ExprError(); |
1746 | break; |
1747 | case Builtin::BI__builtin_annotation: |
1748 | if (SemaBuiltinAnnotation(*this, TheCall)) |
1749 | return ExprError(); |
1750 | break; |
1751 | case Builtin::BI__builtin_addressof: |
1752 | if (SemaBuiltinAddressof(*this, TheCall)) |
1753 | return ExprError(); |
1754 | break; |
1755 | case Builtin::BI__builtin_is_aligned: |
1756 | case Builtin::BI__builtin_align_up: |
1757 | case Builtin::BI__builtin_align_down: |
1758 | if (SemaBuiltinAlignment(*this, TheCall, BuiltinID)) |
1759 | return ExprError(); |
1760 | break; |
1761 | case Builtin::BI__builtin_add_overflow: |
1762 | case Builtin::BI__builtin_sub_overflow: |
1763 | case Builtin::BI__builtin_mul_overflow: |
1764 | if (SemaBuiltinOverflow(*this, TheCall, BuiltinID)) |
1765 | return ExprError(); |
1766 | break; |
1767 | case Builtin::BI__builtin_operator_new: |
1768 | case Builtin::BI__builtin_operator_delete: { |
1769 | bool IsDelete = BuiltinID == Builtin::BI__builtin_operator_delete; |
1770 | ExprResult Res = |
1771 | SemaBuiltinOperatorNewDeleteOverloaded(TheCallResult, IsDelete); |
1772 | if (Res.isInvalid()) |
1773 | CorrectDelayedTyposInExpr(TheCallResult.get()); |
1774 | return Res; |
1775 | } |
1776 | case Builtin::BI__builtin_dump_struct: { |
1777 | |
1778 | if (checkArgCount(*this, TheCall, 2)) |
1779 | return ExprError(); |
1780 | |
1781 | const Expr *PtrArg = TheCall->getArg(0)->IgnoreParenImpCasts(); |
1782 | const QualType PtrArgType = PtrArg->getType(); |
1783 | if (!PtrArgType->isPointerType() || |
1784 | !PtrArgType->getPointeeType()->isRecordType()) { |
1785 | Diag(PtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1786 | << PtrArgType << "structure pointer" << 1 << 0 << 3 << 1 << PtrArgType |
1787 | << "structure pointer"; |
1788 | return ExprError(); |
1789 | } |
1790 | |
1791 | |
1792 | const Expr *FnPtrArg = TheCall->getArg(1)->IgnoreImpCasts(); |
1793 | const QualType FnPtrArgType = FnPtrArg->getType(); |
1794 | if (!FnPtrArgType->isPointerType()) { |
1795 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1796 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 |
1797 | << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1798 | return ExprError(); |
1799 | } |
1800 | |
1801 | const auto *FuncType = |
1802 | FnPtrArgType->getPointeeType()->getAs<FunctionType>(); |
1803 | |
1804 | if (!FuncType) { |
1805 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1806 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 |
1807 | << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1808 | return ExprError(); |
1809 | } |
1810 | |
1811 | if (const auto *FT = dyn_cast<FunctionProtoType>(FuncType)) { |
1812 | if (!FT->getNumParams()) { |
1813 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1814 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 |
1815 | << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1816 | return ExprError(); |
1817 | } |
1818 | QualType PT = FT->getParamType(0); |
1819 | if (!FT->isVariadic() || FT->getReturnType() != Context.IntTy || |
1820 | !PT->isPointerType() || !PT->getPointeeType()->isCharType() || |
1821 | !PT->getPointeeType().isConstQualified()) { |
1822 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1823 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 |
1824 | << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1825 | return ExprError(); |
1826 | } |
1827 | } |
1828 | |
1829 | TheCall->setType(Context.IntTy); |
1830 | break; |
1831 | } |
1832 | case Builtin::BI__builtin_expect_with_probability: { |
1833 | |
1834 | if (checkArgCount(*this, TheCall, 3)) |
1835 | return ExprError(); |
1836 | |
1837 | const Expr *ProbArg = TheCall->getArg(2); |
1838 | SmallVector<PartialDiagnosticAt, 8> Notes; |
1839 | Expr::EvalResult Eval; |
1840 | Eval.Diag = &Notes; |
1841 | if ((!ProbArg->EvaluateAsConstantExpr(Eval, Context)) || |
1842 | !Eval.Val.isFloat()) { |
1843 | Diag(ProbArg->getBeginLoc(), diag::err_probability_not_constant_float) |
1844 | << ProbArg->getSourceRange(); |
1845 | for (const PartialDiagnosticAt &PDiag : Notes) |
1846 | Diag(PDiag.first, PDiag.second); |
1847 | return ExprError(); |
1848 | } |
1849 | llvm::APFloat Probability = Eval.Val.getFloat(); |
1850 | bool LoseInfo = false; |
1851 | Probability.convert(llvm::APFloat::IEEEdouble(), |
1852 | llvm::RoundingMode::Dynamic, &LoseInfo); |
1853 | if (!(Probability >= llvm::APFloat(0.0) && |
1854 | Probability <= llvm::APFloat(1.0))) { |
1855 | Diag(ProbArg->getBeginLoc(), diag::err_probability_out_of_range) |
1856 | << ProbArg->getSourceRange(); |
1857 | return ExprError(); |
1858 | } |
1859 | break; |
1860 | } |
1861 | case Builtin::BI__builtin_preserve_access_index: |
1862 | if (SemaBuiltinPreserveAI(*this, TheCall)) |
1863 | return ExprError(); |
1864 | break; |
1865 | case Builtin::BI__builtin_call_with_static_chain: |
1866 | if (SemaBuiltinCallWithStaticChain(*this, TheCall)) |
1867 | return ExprError(); |
1868 | break; |
1869 | case Builtin::BI__exception_code: |
1870 | case Builtin::BI_exception_code: |
1871 | if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHExceptScope, |
1872 | diag::err_seh___except_block)) |
1873 | return ExprError(); |
1874 | break; |
1875 | case Builtin::BI__exception_info: |
1876 | case Builtin::BI_exception_info: |
1877 | if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHFilterScope, |
1878 | diag::err_seh___except_filter)) |
1879 | return ExprError(); |
1880 | break; |
1881 | case Builtin::BI__GetExceptionInfo: |
1882 | if (checkArgCount(*this, TheCall, 1)) |
1883 | return ExprError(); |
1884 | |
1885 | if (CheckCXXThrowOperand( |
1886 | TheCall->getBeginLoc(), |
1887 | Context.getExceptionObjectType(FDecl->getParamDecl(0)->getType()), |
1888 | TheCall)) |
1889 | return ExprError(); |
1890 | |
1891 | TheCall->setType(Context.VoidPtrTy); |
1892 | break; |
1893 | |
1894 | case Builtin::BIread_pipe: |
1895 | case Builtin::BIwrite_pipe: |
1896 | |
1897 | |
1898 | if (SemaBuiltinRWPipe(*this, TheCall)) |
1899 | return ExprError(); |
1900 | break; |
1901 | case Builtin::BIreserve_read_pipe: |
1902 | case Builtin::BIreserve_write_pipe: |
1903 | case Builtin::BIwork_group_reserve_read_pipe: |
1904 | case Builtin::BIwork_group_reserve_write_pipe: |
1905 | if (SemaBuiltinReserveRWPipe(*this, TheCall)) |
1906 | return ExprError(); |
1907 | break; |
1908 | case Builtin::BIsub_group_reserve_read_pipe: |
1909 | case Builtin::BIsub_group_reserve_write_pipe: |
1910 | if (checkOpenCLSubgroupExt(*this, TheCall) || |
1911 | SemaBuiltinReserveRWPipe(*this, TheCall)) |
1912 | return ExprError(); |
1913 | break; |
1914 | case Builtin::BIcommit_read_pipe: |
1915 | case Builtin::BIcommit_write_pipe: |
1916 | case Builtin::BIwork_group_commit_read_pipe: |
1917 | case Builtin::BIwork_group_commit_write_pipe: |
1918 | if (SemaBuiltinCommitRWPipe(*this, TheCall)) |
1919 | return ExprError(); |
1920 | break; |
1921 | case Builtin::BIsub_group_commit_read_pipe: |
1922 | case Builtin::BIsub_group_commit_write_pipe: |
1923 | if (checkOpenCLSubgroupExt(*this, TheCall) || |
1924 | SemaBuiltinCommitRWPipe(*this, TheCall)) |
1925 | return ExprError(); |
1926 | break; |
1927 | case Builtin::BIget_pipe_num_packets: |
1928 | case Builtin::BIget_pipe_max_packets: |
1929 | if (SemaBuiltinPipePackets(*this, TheCall)) |
1930 | return ExprError(); |
1931 | break; |
1932 | case Builtin::BIto_global: |
1933 | case Builtin::BIto_local: |
1934 | case Builtin::BIto_private: |
1935 | if (SemaOpenCLBuiltinToAddr(*this, BuiltinID, TheCall)) |
1936 | return ExprError(); |
1937 | break; |
1938 | |
1939 | case Builtin::BIenqueue_kernel: |
1940 | if (SemaOpenCLBuiltinEnqueueKernel(*this, TheCall)) |
1941 | return ExprError(); |
1942 | break; |
1943 | case Builtin::BIget_kernel_work_group_size: |
1944 | case Builtin::BIget_kernel_preferred_work_group_size_multiple: |
1945 | if (SemaOpenCLBuiltinKernelWorkGroupSize(*this, TheCall)) |
1946 | return ExprError(); |
1947 | break; |
1948 | case Builtin::BIget_kernel_max_sub_group_size_for_ndrange: |
1949 | case Builtin::BIget_kernel_sub_group_count_for_ndrange: |
1950 | if (SemaOpenCLBuiltinNDRangeAndBlock(*this, TheCall)) |
1951 | return ExprError(); |
1952 | break; |
1953 | case Builtin::BI__builtin_os_log_format: |
1954 | Cleanup.setExprNeedsCleanups(true); |
1955 | LLVM_FALLTHROUGH; |
1956 | case Builtin::BI__builtin_os_log_format_buffer_size: |
1957 | if (SemaBuiltinOSLogFormat(TheCall)) |
1958 | return ExprError(); |
1959 | break; |
1960 | case Builtin::BI__builtin_frame_address: |
1961 | case Builtin::BI__builtin_return_address: { |
1962 | if (SemaBuiltinConstantArgRange(TheCall, 0, 0, 0xFFFF)) |
1963 | return ExprError(); |
1964 | |
1965 | |
1966 | |
1967 | Expr::EvalResult Result; |
1968 | if (!TheCall->getArg(0)->isValueDependent() && |
1969 | TheCall->getArg(0)->EvaluateAsInt(Result, getASTContext()) && |
1970 | Result.Val.getInt() != 0) |
1971 | Diag(TheCall->getBeginLoc(), diag::warn_frame_address) |
1972 | << ((BuiltinID == Builtin::BI__builtin_return_address) |
1973 | ? "__builtin_return_address" |
1974 | : "__builtin_frame_address") |
1975 | << TheCall->getSourceRange(); |
1976 | break; |
1977 | } |
1978 | |
1979 | case Builtin::BI__builtin_matrix_transpose: |
1980 | return SemaBuiltinMatrixTranspose(TheCall, TheCallResult); |
1981 | |
1982 | case Builtin::BI__builtin_matrix_column_major_load: |
1983 | return SemaBuiltinMatrixColumnMajorLoad(TheCall, TheCallResult); |
1984 | |
1985 | case Builtin::BI__builtin_matrix_column_major_store: |
1986 | return SemaBuiltinMatrixColumnMajorStore(TheCall, TheCallResult); |
1987 | |
1988 | case Builtin::BI__builtin_get_device_side_mangled_name: { |
1989 | auto Check = [](CallExpr *TheCall) { |
1990 | if (TheCall->getNumArgs() != 1) |
1991 | return false; |
1992 | auto *DRE = dyn_cast<DeclRefExpr>(TheCall->getArg(0)->IgnoreImpCasts()); |
1993 | if (!DRE) |
1994 | return false; |
1995 | auto *D = DRE->getDecl(); |
1996 | if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) |
1997 | return false; |
1998 | return D->hasAttr<CUDAGlobalAttr>() || D->hasAttr<CUDADeviceAttr>() || |
1999 | D->hasAttr<CUDAConstantAttr>() || D->hasAttr<HIPManagedAttr>(); |
2000 | }; |
2001 | if (!Check(TheCall)) { |
2002 | Diag(TheCall->getBeginLoc(), |
2003 | diag::err_hip_invalid_args_builtin_mangled_name); |
2004 | return ExprError(); |
2005 | } |
2006 | } |
2007 | } |
2008 | |
2009 | |
2010 | |
2011 | if (Context.BuiltinInfo.isTSBuiltin(BuiltinID)) { |
2012 | if (Context.BuiltinInfo.isAuxBuiltinID(BuiltinID)) { |
2013 | assert(Context.getAuxTargetInfo() && |
2014 | "Aux Target Builtin, but not an aux target?"); |
2015 | |
2016 | if (CheckTSBuiltinFunctionCall( |
2017 | *Context.getAuxTargetInfo(), |
2018 | Context.BuiltinInfo.getAuxBuiltinID(BuiltinID), TheCall)) |
2019 | return ExprError(); |
2020 | } else { |
2021 | if (CheckTSBuiltinFunctionCall(Context.getTargetInfo(), BuiltinID, |
2022 | TheCall)) |
2023 | return ExprError(); |
2024 | } |
2025 | } |
2026 | |
2027 | return TheCallResult; |
2028 | } |
2029 | |
2030 | |
2031 | static unsigned RFT(unsigned t, bool shift = false, bool ForceQuad = false) { |
2032 | NeonTypeFlags Type(t); |
2033 | int IsQuad = ForceQuad ? true : Type.isQuad(); |
2034 | switch (Type.getEltType()) { |
2035 | case NeonTypeFlags::Int8: |
2036 | case NeonTypeFlags::Poly8: |
2037 | return shift ? 7 : (8 << IsQuad) - 1; |
2038 | case NeonTypeFlags::Int16: |
2039 | case NeonTypeFlags::Poly16: |
2040 | return shift ? 15 : (4 << IsQuad) - 1; |
2041 | case NeonTypeFlags::Int32: |
2042 | return shift ? 31 : (2 << IsQuad) - 1; |
2043 | case NeonTypeFlags::Int64: |
2044 | case NeonTypeFlags::Poly64: |
2045 | return shift ? 63 : (1 << IsQuad) - 1; |
2046 | case NeonTypeFlags::Poly128: |
2047 | return shift ? 127 : (1 << IsQuad) - 1; |
2048 | case NeonTypeFlags::Float16: |
2049 | assert(!shift && "cannot shift float types!"); |
2050 | return (4 << IsQuad) - 1; |
2051 | case NeonTypeFlags::Float32: |
2052 | assert(!shift && "cannot shift float types!"); |
2053 | return (2 << IsQuad) - 1; |
2054 | case NeonTypeFlags::Float64: |
2055 | assert(!shift && "cannot shift float types!"); |
2056 | return (1 << IsQuad) - 1; |
2057 | case NeonTypeFlags::BFloat16: |
2058 | assert(!shift && "cannot shift float types!"); |
2059 | return (4 << IsQuad) - 1; |
2060 | } |
2061 | llvm_unreachable("Invalid NeonTypeFlag!"); |
2062 | } |
2063 | |
2064 | |
2065 | |
2066 | |
2067 | static QualType getNeonEltType(NeonTypeFlags Flags, ASTContext &Context, |
2068 | bool IsPolyUnsigned, bool IsInt64Long) { |
2069 | switch (Flags.getEltType()) { |
2070 | case NeonTypeFlags::Int8: |
2071 | return Flags.isUnsigned() ? Context.UnsignedCharTy : Context.SignedCharTy; |
2072 | case NeonTypeFlags::Int16: |
2073 | return Flags.isUnsigned() ? Context.UnsignedShortTy : Context.ShortTy; |
2074 | case NeonTypeFlags::Int32: |
2075 | return Flags.isUnsigned() ? Context.UnsignedIntTy : Context.IntTy; |
2076 | case NeonTypeFlags::Int64: |
2077 | if (IsInt64Long) |
2078 | return Flags.isUnsigned() ? Context.UnsignedLongTy : Context.LongTy; |
2079 | else |
2080 | return Flags.isUnsigned() ? Context.UnsignedLongLongTy |
2081 | : Context.LongLongTy; |
2082 | case NeonTypeFlags::Poly8: |
2083 | return IsPolyUnsigned ? Context.UnsignedCharTy : Context.SignedCharTy; |
2084 | case NeonTypeFlags::Poly16: |
2085 | return IsPolyUnsigned ? Context.UnsignedShortTy : Context.ShortTy; |
2086 | case NeonTypeFlags::Poly64: |
2087 | if (IsInt64Long) |
2088 | return Context.UnsignedLongTy; |
2089 | else |
2090 | return Context.UnsignedLongLongTy; |
2091 | case NeonTypeFlags::Poly128: |
2092 | break; |
2093 | case NeonTypeFlags::Float16: |
2094 | return Context.HalfTy; |
2095 | case NeonTypeFlags::Float32: |
2096 | return Context.FloatTy; |
2097 | case NeonTypeFlags::Float64: |
2098 | return Context.DoubleTy; |
2099 | case NeonTypeFlags::BFloat16: |
2100 | return Context.BFloat16Ty; |
2101 | } |
2102 | llvm_unreachable("Invalid NeonTypeFlag!"); |
2103 | } |
2104 | |
2105 | bool Sema::CheckSVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { |
2106 | |
2107 | SmallVector<std::tuple<int,int,int>, 3> ImmChecks; |
2108 | |
2109 | switch (BuiltinID) { |
2110 | default: |
2111 | return false; |
2112 | #define GET_SVE_IMMEDIATE_CHECK |
2113 | #include "clang/Basic/arm_sve_sema_rangechecks.inc" |
2114 | #undef GET_SVE_IMMEDIATE_CHECK |
2115 | } |
2116 | |
2117 | |
2118 | bool HasError = false; |
2119 | for (auto &I : ImmChecks) { |
2120 | int ArgNum, CheckTy, ElementSizeInBits; |
2121 | std::tie(ArgNum, CheckTy, ElementSizeInBits) = I; |
2122 | |
2123 | typedef bool(*OptionSetCheckFnTy)(int64_t Value); |
2124 | |
2125 | |
2126 | |
2127 | auto CheckImmediateInSet = [&](OptionSetCheckFnTy CheckImm, |
2128 | int ErrDiag) -> bool { |
2129 | |
2130 | Expr *Arg = TheCall->getArg(ArgNum); |
2131 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
2132 | return false; |
2133 | |
2134 | |
2135 | llvm::APSInt Imm; |
2136 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Imm)) |
2137 | return true; |
2138 | |
2139 | if (!CheckImm(Imm.getSExtValue())) |
2140 | return Diag(TheCall->getBeginLoc(), ErrDiag) << Arg->getSourceRange(); |
2141 | return false; |
2142 | }; |
2143 | |
2144 | switch ((SVETypeFlags::ImmCheckType)CheckTy) { |
2145 | case SVETypeFlags::ImmCheck0_31: |
2146 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 31)) |
2147 | HasError = true; |
2148 | break; |
2149 | case SVETypeFlags::ImmCheck0_13: |
2150 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 13)) |
2151 | HasError = true; |
2152 | break; |
2153 | case SVETypeFlags::ImmCheck1_16: |
2154 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 1, 16)) |
2155 | HasError = true; |
2156 | break; |
2157 | case SVETypeFlags::ImmCheck0_7: |
2158 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 7)) |
2159 | HasError = true; |
2160 | break; |
2161 | case SVETypeFlags::ImmCheckExtract: |
2162 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2163 | (2048 / ElementSizeInBits) - 1)) |
2164 | HasError = true; |
2165 | break; |
2166 | case SVETypeFlags::ImmCheckShiftRight: |
2167 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 1, ElementSizeInBits)) |
2168 | HasError = true; |
2169 | break; |
2170 | case SVETypeFlags::ImmCheckShiftRightNarrow: |
2171 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 1, |
2172 | ElementSizeInBits / 2)) |
2173 | HasError = true; |
2174 | break; |
2175 | case SVETypeFlags::ImmCheckShiftLeft: |
2176 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2177 | ElementSizeInBits - 1)) |
2178 | HasError = true; |
2179 | break; |
2180 | case SVETypeFlags::ImmCheckLaneIndex: |
2181 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2182 | (128 / (1 * ElementSizeInBits)) - 1)) |
2183 | HasError = true; |
2184 | break; |
2185 | case SVETypeFlags::ImmCheckLaneIndexCompRotate: |
2186 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2187 | (128 / (2 * ElementSizeInBits)) - 1)) |
2188 | HasError = true; |
2189 | break; |
2190 | case SVETypeFlags::ImmCheckLaneIndexDot: |
2191 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2192 | (128 / (4 * ElementSizeInBits)) - 1)) |
2193 | HasError = true; |
2194 | break; |
2195 | case SVETypeFlags::ImmCheckComplexRot90_270: |
2196 | if (CheckImmediateInSet([](int64_t V) { return V == 90 || V == 270; }, |
2197 | diag::err_rotation_argument_to_cadd)) |
2198 | HasError = true; |
2199 | break; |
2200 | case SVETypeFlags::ImmCheckComplexRotAll90: |
2201 | if (CheckImmediateInSet( |
2202 | [](int64_t V) { |
2203 | return V == 0 || V == 90 || V == 180 || V == 270; |
2204 | }, |
2205 | diag::err_rotation_argument_to_cmla)) |
2206 | HasError = true; |
2207 | break; |
2208 | case SVETypeFlags::ImmCheck0_1: |
2209 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 1)) |
2210 | HasError = true; |
2211 | break; |
2212 | case SVETypeFlags::ImmCheck0_2: |
2213 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 2)) |
2214 | HasError = true; |
2215 | break; |
2216 | case SVETypeFlags::ImmCheck0_3: |
2217 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 3)) |
2218 | HasError = true; |
2219 | break; |
2220 | } |
2221 | } |
2222 | |
2223 | return HasError; |
2224 | } |
2225 | |
2226 | bool Sema::CheckNeonBuiltinFunctionCall(const TargetInfo &TI, |
2227 | unsigned BuiltinID, CallExpr *TheCall) { |
2228 | llvm::APSInt Result; |
2229 | uint64_t mask = 0; |
2230 | unsigned TV = 0; |
2231 | int PtrArgNum = -1; |
2232 | bool HasConstPtr = false; |
2233 | switch (BuiltinID) { |
2234 | #define GET_NEON_OVERLOAD_CHECK |
2235 | #include "clang/Basic/arm_neon.inc" |
2236 | #include "clang/Basic/arm_fp16.inc" |
2237 | #undef GET_NEON_OVERLOAD_CHECK |
2238 | } |
2239 | |
2240 | |
2241 | |
2242 | unsigned ImmArg = TheCall->getNumArgs()-1; |
2243 | if (mask) { |
2244 | if (SemaBuiltinConstantArg(TheCall, ImmArg, Result)) |
2245 | return true; |
2246 | |
2247 | TV = Result.getLimitedValue(64); |
2248 | if ((TV > 63) || (mask & (1ULL << TV)) == 0) |
2249 | return Diag(TheCall->getBeginLoc(), diag::err_invalid_neon_type_code) |
2250 | << TheCall->getArg(ImmArg)->getSourceRange(); |
2251 | } |
2252 | |
2253 | if (PtrArgNum >= 0) { |
2254 | |
2255 | Expr *Arg = TheCall->getArg(PtrArgNum); |
2256 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Arg)) |
2257 | Arg = ICE->getSubExpr(); |
2258 | ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg); |
2259 | QualType RHSTy = RHS.get()->getType(); |
2260 | |
2261 | llvm::Triple::ArchType Arch = TI.getTriple().getArch(); |
2262 | bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 || |
2263 | Arch == llvm::Triple::aarch64_32 || |
2264 | Arch == llvm::Triple::aarch64_be; |
2265 | bool IsInt64Long = TI.getInt64Type() == TargetInfo::SignedLong; |
2266 | QualType EltTy = |
2267 | getNeonEltType(NeonTypeFlags(TV), Context, IsPolyUnsigned, IsInt64Long); |
2268 | if (HasConstPtr) |
2269 | EltTy = EltTy.withConst(); |
2270 | QualType LHSTy = Context.getPointerType(EltTy); |
2271 | AssignConvertType ConvTy; |
2272 | ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); |
2273 | if (RHS.isInvalid()) |
2274 | return true; |
2275 | if (DiagnoseAssignmentResult(ConvTy, Arg->getBeginLoc(), LHSTy, RHSTy, |
2276 | RHS.get(), AA_Assigning)) |
2277 | return true; |
2278 | } |
2279 | |
2280 | |
2281 | |
2282 | unsigned i = 0, l = 0, u = 0; |
2283 | switch (BuiltinID) { |
2284 | default: |
2285 | return false; |
2286 | #define GET_NEON_IMMEDIATE_CHECK |
2287 | #include "clang/Basic/arm_neon.inc" |
2288 | #include "clang/Basic/arm_fp16.inc" |
2289 | #undef GET_NEON_IMMEDIATE_CHECK |
2290 | } |
2291 | |
2292 | return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); |
2293 | } |
2294 | |
2295 | bool Sema::CheckMVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { |
2296 | switch (BuiltinID) { |
2297 | default: |
2298 | return false; |
2299 | #include "clang/Basic/arm_mve_builtin_sema.inc" |
2300 | } |
2301 | } |
2302 | |
2303 | bool Sema::CheckCDEBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
2304 | CallExpr *TheCall) { |
2305 | bool Err = false; |
2306 | switch (BuiltinID) { |
2307 | default: |
2308 | return false; |
2309 | #include "clang/Basic/arm_cde_builtin_sema.inc" |
2310 | } |
2311 | |
2312 | if (Err) |
2313 | return true; |
2314 | |
2315 | return CheckARMCoprocessorImmediate(TI, TheCall->getArg(0), true); |
2316 | } |
2317 | |
2318 | bool Sema::CheckARMCoprocessorImmediate(const TargetInfo &TI, |
2319 | const Expr *CoprocArg, bool WantCDE) { |
2320 | if (isConstantEvaluated()) |
2321 | return false; |
2322 | |
2323 | |
2324 | if (CoprocArg->isTypeDependent() || CoprocArg->isValueDependent()) |
2325 | return false; |
2326 | |
2327 | llvm::APSInt CoprocNoAP = *CoprocArg->getIntegerConstantExpr(Context); |
2328 | int64_t CoprocNo = CoprocNoAP.getExtValue(); |
2329 | assert(CoprocNo >= 0 && "Coprocessor immediate must be non-negative"); |
2330 | |
2331 | uint32_t CDECoprocMask = TI.getARMCDECoprocMask(); |
2332 | bool IsCDECoproc = CoprocNo <= 7 && (CDECoprocMask & (1 << CoprocNo)); |
2333 | |
2334 | if (IsCDECoproc != WantCDE) |
2335 | return Diag(CoprocArg->getBeginLoc(), diag::err_arm_invalid_coproc) |
2336 | << (int)CoprocNo << (int)WantCDE << CoprocArg->getSourceRange(); |
2337 | |
2338 | return false; |
2339 | } |
2340 | |
2341 | bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, |
2342 | unsigned MaxWidth) { |
2343 | assert((BuiltinID == ARM::BI__builtin_arm_ldrex || |
2344 | BuiltinID == ARM::BI__builtin_arm_ldaex || |
2345 | BuiltinID == ARM::BI__builtin_arm_strex || |
2346 | BuiltinID == ARM::BI__builtin_arm_stlex || |
2347 | BuiltinID == AArch64::BI__builtin_arm_ldrex || |
2348 | BuiltinID == AArch64::BI__builtin_arm_ldaex || |
2349 | BuiltinID == AArch64::BI__builtin_arm_strex || |
2350 | BuiltinID == AArch64::BI__builtin_arm_stlex) && |
2351 | "unexpected ARM builtin"); |
2352 | bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex || |
2353 | BuiltinID == ARM::BI__builtin_arm_ldaex || |
2354 | BuiltinID == AArch64::BI__builtin_arm_ldrex || |
2355 | BuiltinID == AArch64::BI__builtin_arm_ldaex; |
2356 | |
2357 | DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
2358 | |
2359 | |
2360 | if (checkArgCount(*this, TheCall, IsLdrex ? 1 : 2)) |
2361 | return true; |
2362 | |
2363 | |
2364 | |
2365 | |
2366 | |
2367 | Expr *PointerArg = TheCall->getArg(IsLdrex ? 0 : 1); |
2368 | ExprResult PointerArgRes = DefaultFunctionArrayLvalueConversion(PointerArg); |
2369 | if (PointerArgRes.isInvalid()) |
2370 | return true; |
2371 | PointerArg = PointerArgRes.get(); |
2372 | |
2373 | const PointerType *pointerType = PointerArg->getType()->getAs<PointerType>(); |
2374 | if (!pointerType) { |
2375 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer) |
2376 | << PointerArg->getType() << PointerArg->getSourceRange(); |
2377 | return true; |
2378 | } |
2379 | |
2380 | |
2381 | |
2382 | |
2383 | QualType ValType = pointerType->getPointeeType(); |
2384 | QualType AddrType = ValType.getUnqualifiedType().withVolatile(); |
2385 | if (IsLdrex) |
2386 | AddrType.addConst(); |
2387 | |
2388 | |
2389 | CastKind CastNeeded = CK_NoOp; |
2390 | if (!AddrType.isAtLeastAsQualifiedAs(ValType)) { |
2391 | CastNeeded = CK_BitCast; |
2392 | Diag(DRE->getBeginLoc(), diag::ext_typecheck_convert_discards_qualifiers) |
2393 | << PointerArg->getType() << Context.getPointerType(AddrType) |
2394 | << AA_Passing << PointerArg->getSourceRange(); |
2395 | } |
2396 | |
2397 | |
2398 | AddrType = Context.getPointerType(AddrType); |
2399 | PointerArgRes = ImpCastExprToType(PointerArg, AddrType, CastNeeded); |
2400 | if (PointerArgRes.isInvalid()) |
2401 | return true; |
2402 | PointerArg = PointerArgRes.get(); |
2403 | |
2404 | TheCall->setArg(IsLdrex ? 0 : 1, PointerArg); |
2405 | |
2406 | |
2407 | if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && |
2408 | !ValType->isBlockPointerType() && !ValType->isFloatingType()) { |
2409 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer_intfltptr) |
2410 | << PointerArg->getType() << PointerArg->getSourceRange(); |
2411 | return true; |
2412 | } |
2413 | |
2414 | |
2415 | if (Context.getTypeSize(ValType) > MaxWidth) { |
2416 | assert(MaxWidth == 64 && "Diagnostic unexpectedly inaccurate"); |
2417 | Diag(DRE->getBeginLoc(), diag::err_atomic_exclusive_builtin_pointer_size) |
2418 | << PointerArg->getType() << PointerArg->getSourceRange(); |
2419 | return true; |
2420 | } |
2421 | |
2422 | switch (ValType.getObjCLifetime()) { |
2423 | case Qualifiers::OCL_None: |
2424 | case Qualifiers::OCL_ExplicitNone: |
2425 | |
2426 | break; |
2427 | |
2428 | case Qualifiers::OCL_Weak: |
2429 | case Qualifiers::OCL_Strong: |
2430 | case Qualifiers::OCL_Autoreleasing: |
2431 | Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership) |
2432 | << ValType << PointerArg->getSourceRange(); |
2433 | return true; |
2434 | } |
2435 | |
2436 | if (IsLdrex) { |
2437 | TheCall->setType(ValType); |
2438 | return false; |
2439 | } |
2440 | |
2441 | |
2442 | ExprResult ValArg = TheCall->getArg(0); |
2443 | InitializedEntity Entity = InitializedEntity::InitializeParameter( |
2444 | Context, ValType, false); |
2445 | ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); |
2446 | if (ValArg.isInvalid()) |
2447 | return true; |
2448 | TheCall->setArg(0, ValArg.get()); |
2449 | |
2450 | |
2451 | |
2452 | TheCall->setType(Context.IntTy); |
2453 | return false; |
2454 | } |
2455 | |
2456 | bool Sema::CheckARMBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
2457 | CallExpr *TheCall) { |
2458 | if (BuiltinID == ARM::BI__builtin_arm_ldrex || |
2459 | BuiltinID == ARM::BI__builtin_arm_ldaex || |
2460 | BuiltinID == ARM::BI__builtin_arm_strex || |
2461 | BuiltinID == ARM::BI__builtin_arm_stlex) { |
2462 | return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64); |
2463 | } |
2464 | |
2465 | if (BuiltinID == ARM::BI__builtin_arm_prefetch) { |
2466 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || |
2467 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 1); |
2468 | } |
2469 | |
2470 | if (BuiltinID == ARM::BI__builtin_arm_rsr64 || |
2471 | BuiltinID == ARM::BI__builtin_arm_wsr64) |
2472 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 3, false); |
2473 | |
2474 | if (BuiltinID == ARM::BI__builtin_arm_rsr || |
2475 | BuiltinID == ARM::BI__builtin_arm_rsrp || |
2476 | BuiltinID == ARM::BI__builtin_arm_wsr || |
2477 | BuiltinID == ARM::BI__builtin_arm_wsrp) |
2478 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); |
2479 | |
2480 | if (CheckNeonBuiltinFunctionCall(TI, BuiltinID, TheCall)) |
2481 | return true; |
2482 | if (CheckMVEBuiltinFunctionCall(BuiltinID, TheCall)) |
2483 | return true; |
2484 | if (CheckCDEBuiltinFunctionCall(TI, BuiltinID, TheCall)) |
2485 | return true; |
2486 | |
2487 | |
2488 | |
2489 | |
2490 | switch (BuiltinID) { |
2491 | default: return false; |
2492 | case ARM::BI__builtin_arm_ssat: |
2493 | return SemaBuiltinConstantArgRange(TheCall, 1, 1, 32); |
2494 | case ARM::BI__builtin_arm_usat: |
2495 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 31); |
2496 | case ARM::BI__builtin_arm_ssat16: |
2497 | return SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); |
2498 | case ARM::BI__builtin_arm_usat16: |
2499 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
2500 | case ARM::BI__builtin_arm_vcvtr_f: |
2501 | case ARM::BI__builtin_arm_vcvtr_d: |
2502 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
2503 | case ARM::BI__builtin_arm_dmb: |
2504 | case ARM::BI__builtin_arm_dsb: |
2505 | case ARM::BI__builtin_arm_isb: |
2506 | case ARM::BI__builtin_arm_dbg: |
2507 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15); |
2508 | case ARM::BI__builtin_arm_cdp: |
2509 | case ARM::BI__builtin_arm_cdp2: |
2510 | case ARM::BI__builtin_arm_mcr: |
2511 | case ARM::BI__builtin_arm_mcr2: |
2512 | case ARM::BI__builtin_arm_mrc: |
2513 | case ARM::BI__builtin_arm_mrc2: |
2514 | case ARM::BI__builtin_arm_mcrr: |
2515 | case ARM::BI__builtin_arm_mcrr2: |
2516 | case ARM::BI__builtin_arm_mrrc: |
2517 | case ARM::BI__builtin_arm_mrrc2: |
2518 | case ARM::BI__builtin_arm_ldc: |
2519 | case ARM::BI__builtin_arm_ldcl: |
2520 | case ARM::BI__builtin_arm_ldc2: |
2521 | case ARM::BI__builtin_arm_ldc2l: |
2522 | case ARM::BI__builtin_arm_stc: |
2523 | case ARM::BI__builtin_arm_stcl: |
2524 | case ARM::BI__builtin_arm_stc2: |
2525 | case ARM::BI__builtin_arm_stc2l: |
2526 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15) || |
2527 | CheckARMCoprocessorImmediate(TI, TheCall->getArg(0), |
2528 | false); |
2529 | } |
2530 | } |
2531 | |
2532 | bool Sema::CheckAArch64BuiltinFunctionCall(const TargetInfo &TI, |
2533 | unsigned BuiltinID, |
2534 | CallExpr *TheCall) { |
2535 | if (BuiltinID == AArch64::BI__builtin_arm_ldrex || |
2536 | BuiltinID == AArch64::BI__builtin_arm_ldaex || |
2537 | BuiltinID == AArch64::BI__builtin_arm_strex || |
2538 | BuiltinID == AArch64::BI__builtin_arm_stlex) { |
2539 | return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 128); |
2540 | } |
2541 | |
2542 | if (BuiltinID == AArch64::BI__builtin_arm_prefetch) { |
2543 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || |
2544 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 2) || |
2545 | SemaBuiltinConstantArgRange(TheCall, 3, 0, 1) || |
2546 | SemaBuiltinConstantArgRange(TheCall, 4, 0, 1); |
2547 | } |
2548 | |
2549 | if (BuiltinID == AArch64::BI__builtin_arm_rsr64 || |
2550 | BuiltinID == AArch64::BI__builtin_arm_wsr64) |
2551 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); |
2552 | |
2553 | |
2554 | if (BuiltinID == AArch64::BI__builtin_arm_irg || |
2555 | BuiltinID == AArch64::BI__builtin_arm_addg || |
2556 | BuiltinID == AArch64::BI__builtin_arm_gmi || |
2557 | BuiltinID == AArch64::BI__builtin_arm_ldg || |
2558 | BuiltinID == AArch64::BI__builtin_arm_stg || |
2559 | BuiltinID == AArch64::BI__builtin_arm_subp) { |
2560 | return SemaBuiltinARMMemoryTaggingCall(BuiltinID, TheCall); |
2561 | } |
2562 | |
2563 | if (BuiltinID == AArch64::BI__builtin_arm_rsr || |
2564 | BuiltinID == AArch64::BI__builtin_arm_rsrp || |
2565 | BuiltinID == AArch64::BI__builtin_arm_wsr || |
2566 | BuiltinID == AArch64::BI__builtin_arm_wsrp) |
2567 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); |
2568 | |
2569 | |
2570 | |
2571 | |
2572 | if (BuiltinID == AArch64::BI_ReadStatusReg || |
2573 | BuiltinID == AArch64::BI_WriteStatusReg) |
2574 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 0x7fff); |
2575 | |
2576 | if (BuiltinID == AArch64::BI__getReg) |
2577 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31); |
2578 | |
2579 | if (CheckNeonBuiltinFunctionCall(TI, BuiltinID, TheCall)) |
2580 | return true; |
2581 | |
2582 | if (CheckSVEBuiltinFunctionCall(BuiltinID, TheCall)) |
2583 | return true; |
2584 | |
2585 | |
2586 | |
2587 | unsigned i = 0, l = 0, u = 0; |
2588 | switch (BuiltinID) { |
2589 | default: return false; |
2590 | case AArch64::BI__builtin_arm_dmb: |
2591 | case AArch64::BI__builtin_arm_dsb: |
2592 | case AArch64::BI__builtin_arm_isb: l = 0; u = 15; break; |
2593 | case AArch64::BI__builtin_arm_tcancel: l = 0; u = 65535; break; |
2594 | } |
2595 | |
2596 | return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); |
2597 | } |
2598 | |
2599 | static bool isValidBPFPreserveFieldInfoArg(Expr *Arg) { |
2600 | if (Arg->getType()->getAsPlaceholderType()) |
2601 | return false; |
2602 | |
2603 | |
2604 | |
2605 | |
2606 | |
2607 | return (Arg->IgnoreParens()->getObjectKind() == OK_BitField || |
2608 | dyn_cast<MemberExpr>(Arg->IgnoreParens()) || |
2609 | dyn_cast<ArraySubscriptExpr>(Arg->IgnoreParens())); |
2610 | } |
2611 | |
2612 | static bool isEltOfVectorTy(ASTContext &Context, CallExpr *Call, Sema &S, |
2613 | QualType VectorTy, QualType EltTy) { |
2614 | QualType VectorEltTy = VectorTy->castAs<VectorType>()->getElementType(); |
2615 | if (!Context.hasSameType(VectorEltTy, EltTy)) { |
2616 | S.Diag(Call->getBeginLoc(), diag::err_typecheck_call_different_arg_types) |
2617 | << Call->getSourceRange() << VectorEltTy << EltTy; |
2618 | return false; |
2619 | } |
2620 | return true; |
2621 | } |
2622 | |
2623 | static bool isValidBPFPreserveTypeInfoArg(Expr *Arg) { |
2624 | QualType ArgType = Arg->getType(); |
2625 | if (ArgType->getAsPlaceholderType()) |
2626 | return false; |
2627 | |
2628 | |
2629 | |
2630 | |
2631 | |
2632 | |
2633 | if (!dyn_cast<DeclRefExpr>(Arg->IgnoreParens()) && |
2634 | !dyn_cast<UnaryOperator>(Arg->IgnoreParens())) |
2635 | return false; |
2636 | |
2637 | |
2638 | if (ArgType->getAs<TypedefType>()) |
2639 | return true; |
2640 | |
2641 | |
2642 | const Type *Ty = ArgType->getUnqualifiedDesugaredType(); |
2643 | if (const auto *RT = Ty->getAs<RecordType>()) { |
2644 | if (!RT->getDecl()->getDeclName().isEmpty()) |
2645 | return true; |
2646 | } else if (const auto *ET = Ty->getAs<EnumType>()) { |
2647 | if (!ET->getDecl()->getDeclName().isEmpty()) |
2648 | return true; |
2649 | } |
2650 | |
2651 | return false; |
2652 | } |
2653 | |
2654 | static bool isValidBPFPreserveEnumValueArg(Expr *Arg) { |
2655 | QualType ArgType = Arg->getType(); |
2656 | if (ArgType->getAsPlaceholderType()) |
2657 | return false; |
2658 | |
2659 | |
2660 | |
2661 | |
2662 | |
2663 | const auto *UO = dyn_cast<UnaryOperator>(Arg->IgnoreParens()); |
2664 | if (!UO) |
2665 | return false; |
2666 | |
2667 | const auto *CE = dyn_cast<CStyleCastExpr>(UO->getSubExpr()); |
2668 | if (!CE) |
2669 | return false; |
2670 | if (CE->getCastKind() != CK_IntegralToPointer && |
2671 | CE->getCastKind() != CK_NullToPointer) |
2672 | return false; |
2673 | |
2674 | |
2675 | const auto *DR = dyn_cast<DeclRefExpr>(CE->getSubExpr()); |
2676 | if (!DR) |
2677 | return false; |
2678 | |
2679 | const EnumConstantDecl *Enumerator = |
2680 | dyn_cast<EnumConstantDecl>(DR->getDecl()); |
2681 | if (!Enumerator) |
2682 | return false; |
2683 | |
2684 | |
2685 | const Type *Ty = ArgType->getUnqualifiedDesugaredType(); |
2686 | const auto *ET = Ty->getAs<EnumType>(); |
2687 | if (!ET) |
2688 | return false; |
2689 | |
2690 | |
2691 | for (auto *EDI : ET->getDecl()->enumerators()) { |
2692 | if (EDI == Enumerator) |
2693 | return true; |
2694 | } |
2695 | |
2696 | return false; |
2697 | } |
2698 | |
2699 | bool Sema::CheckBPFBuiltinFunctionCall(unsigned BuiltinID, |
2700 | CallExpr *TheCall) { |
2701 | assert((BuiltinID == BPF::BI__builtin_preserve_field_info || |
2702 | BuiltinID == BPF::BI__builtin_btf_type_id || |
2703 | BuiltinID == BPF::BI__builtin_preserve_type_info || |
2704 | BuiltinID == BPF::BI__builtin_preserve_enum_value) && |
2705 | "unexpected BPF builtin"); |
2706 | |
2707 | if (checkArgCount(*this, TheCall, 2)) |
2708 | return true; |
2709 | |
2710 | |
2711 | Expr *Arg = TheCall->getArg(1); |
2712 | Optional<llvm::APSInt> Value = Arg->getIntegerConstantExpr(Context); |
2713 | diag::kind kind; |
2714 | if (!Value) { |
2715 | if (BuiltinID == BPF::BI__builtin_preserve_field_info) |
2716 | kind = diag::err_preserve_field_info_not_const; |
2717 | else if (BuiltinID == BPF::BI__builtin_btf_type_id) |
2718 | kind = diag::err_btf_type_id_not_const; |
2719 | else if (BuiltinID == BPF::BI__builtin_preserve_type_info) |
2720 | kind = diag::err_preserve_type_info_not_const; |
2721 | else |
2722 | kind = diag::err_preserve_enum_value_not_const; |
2723 | Diag(Arg->getBeginLoc(), kind) << 2 << Arg->getSourceRange(); |
2724 | return true; |
2725 | } |
2726 | |
2727 | |
2728 | Arg = TheCall->getArg(0); |
2729 | bool InvalidArg = false; |
2730 | bool ReturnUnsignedInt = true; |
2731 | if (BuiltinID == BPF::BI__builtin_preserve_field_info) { |
2732 | if (!isValidBPFPreserveFieldInfoArg(Arg)) { |
2733 | InvalidArg = true; |
2734 | kind = diag::err_preserve_field_info_not_field; |
2735 | } |
2736 | } else if (BuiltinID == BPF::BI__builtin_preserve_type_info) { |
2737 | if (!isValidBPFPreserveTypeInfoArg(Arg)) { |
2738 | InvalidArg = true; |
2739 | kind = diag::err_preserve_type_info_invalid; |
2740 | } |
2741 | } else if (BuiltinID == BPF::BI__builtin_preserve_enum_value) { |
2742 | if (!isValidBPFPreserveEnumValueArg(Arg)) { |
2743 | InvalidArg = true; |
2744 | kind = diag::err_preserve_enum_value_invalid; |
2745 | } |
2746 | ReturnUnsignedInt = false; |
2747 | } else if (BuiltinID == BPF::BI__builtin_btf_type_id) { |
2748 | ReturnUnsignedInt = false; |
2749 | } |
2750 | |
2751 | if (InvalidArg) { |
2752 | Diag(Arg->getBeginLoc(), kind) << 1 << Arg->getSourceRange(); |
2753 | return true; |
2754 | } |
2755 | |
2756 | if (ReturnUnsignedInt) |
2757 | TheCall->setType(Context.UnsignedIntTy); |
2758 | else |
2759 | TheCall->setType(Context.UnsignedLongTy); |
2760 | return false; |
2761 | } |
2762 | |
2763 | bool Sema::CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { |
2764 | struct ArgInfo { |
2765 | uint8_t OpNum; |
2766 | bool IsSigned; |
2767 | uint8_t BitWidth; |
2768 | uint8_t Align; |
2769 | }; |
2770 | struct BuiltinInfo { |
2771 | unsigned BuiltinID; |
2772 | ArgInfo Infos[2]; |
2773 | }; |
2774 | |
2775 | static BuiltinInfo Infos[] = { |
2776 | { Hexagon::BI__builtin_circ_ldd, {{ 3, true, 4, 3 }} }, |
2777 | { Hexagon::BI__builtin_circ_ldw, {{ 3, true, 4, 2 }} }, |
2778 | { Hexagon::BI__builtin_circ_ldh, {{ 3, true, 4, 1 }} }, |
2779 | { Hexagon::BI__builtin_circ_lduh, {{ 3, true, 4, 1 }} }, |
2780 | { Hexagon::BI__builtin_circ_ldb, {{ 3, true, 4, 0 }} }, |
2781 | { Hexagon::BI__builtin_circ_ldub, {{ 3, true, 4, 0 }} }, |
2782 | { Hexagon::BI__builtin_circ_std, {{ 3, true, 4, 3 }} }, |
2783 | { Hexagon::BI__builtin_circ_stw, {{ 3, true, 4, 2 }} }, |
2784 | { Hexagon::BI__builtin_circ_sth, {{ 3, true, 4, 1 }} }, |
2785 | { Hexagon::BI__builtin_circ_sthhi, {{ 3, true, 4, 1 }} }, |
2786 | { Hexagon::BI__builtin_circ_stb, {{ 3, true, 4, 0 }} }, |
2787 | |
2788 | { Hexagon::BI__builtin_HEXAGON_L2_loadrub_pci, {{ 1, true, 4, 0 }} }, |
2789 | { Hexagon::BI__builtin_HEXAGON_L2_loadrb_pci, {{ 1, true, 4, 0 }} }, |
2790 | { Hexagon::BI__builtin_HEXAGON_L2_loadruh_pci, {{ 1, true, 4, 1 }} }, |
2791 | { Hexagon::BI__builtin_HEXAGON_L2_loadrh_pci, {{ 1, true, 4, 1 }} }, |
2792 | { Hexagon::BI__builtin_HEXAGON_L2_loadri_pci, {{ 1, true, 4, 2 }} }, |
2793 | { Hexagon::BI__builtin_HEXAGON_L2_loadrd_pci, {{ 1, true, 4, 3 }} }, |
2794 | { Hexagon::BI__builtin_HEXAGON_S2_storerb_pci, {{ 1, true, 4, 0 }} }, |
2795 | { Hexagon::BI__builtin_HEXAGON_S2_storerh_pci, {{ 1, true, 4, 1 }} }, |
2796 | { Hexagon::BI__builtin_HEXAGON_S2_storerf_pci, {{ 1, true, 4, 1 }} }, |
2797 | { Hexagon::BI__builtin_HEXAGON_S2_storeri_pci, {{ 1, true, 4, 2 }} }, |
2798 | { Hexagon::BI__builtin_HEXAGON_S2_storerd_pci, {{ 1, true, 4, 3 }} }, |
2799 | |
2800 | { Hexagon::BI__builtin_HEXAGON_A2_combineii, {{ 1, true, 8, 0 }} }, |
2801 | { Hexagon::BI__builtin_HEXAGON_A2_tfrih, {{ 1, false, 16, 0 }} }, |
2802 | { Hexagon::BI__builtin_HEXAGON_A2_tfril, {{ 1, false, 16, 0 }} }, |
2803 | { Hexagon::BI__builtin_HEXAGON_A2_tfrpi, {{ 0, true, 8, 0 }} }, |
2804 | { Hexagon::BI__builtin_HEXAGON_A4_bitspliti, {{ 1, false, 5, 0 }} }, |
2805 | { Hexagon::BI__builtin_HEXAGON_A4_cmpbeqi, {{ 1, false, 8, 0 }} }, |
2806 | { Hexagon::BI__builtin_HEXAGON_A4_cmpbgti, {{ 1, true, 8, 0 }} }, |
2807 | { Hexagon::BI__builtin_HEXAGON_A4_cround_ri, {{ 1, false, 5, 0 }} }, |
2808 | { Hexagon::BI__builtin_HEXAGON_A4_round_ri, {{ 1, false, 5, 0 }} }, |
2809 | { Hexagon::BI__builtin_HEXAGON_A4_round_ri_sat, {{ 1, false, 5, 0 }} }, |
2810 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpbeqi, {{ 1, false, 8, 0 }} }, |
2811 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgti, {{ 1, true, 8, 0 }} }, |
2812 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgtui, {{ 1, false, 7, 0 }} }, |
2813 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpheqi, {{ 1, true, 8, 0 }} }, |
2814 | { Hexagon::BI__builtin_HEXAGON_A4_vcmphgti, {{ 1, true, 8, 0 }} }, |
2815 | { Hexagon::BI__builtin_HEXAGON_A4_vcmphgtui, {{ 1, false, 7, 0 }} }, |
2816 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpweqi, {{ 1, true, 8, 0 }} }, |
2817 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgti, {{ 1, true, 8, 0 }} }, |
2818 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgtui, {{ 1, false, 7, 0 }} }, |
2819 | { Hexagon::BI__builtin_HEXAGON_C2_bitsclri, {{ 1, false, 6, 0 }} }, |
2820 | { Hexagon::BI__builtin_HEXAGON_C2_muxii, {{ 2, true, 8, 0 }} }, |
2821 | { Hexagon::BI__builtin_HEXAGON_C4_nbitsclri, {{ 1, false, 6, 0 }} }, |
2822 | { Hexagon::BI__builtin_HEXAGON_F2_dfclass, {{ 1, false, 5, 0 }} }, |
2823 | { Hexagon::BI__builtin_HEXAGON_F2_dfimm_n, {{ 0, false, 10, 0 }} }, |
2824 | { Hexagon::BI__builtin_HEXAGON_F2_dfimm_p, {{ 0, false, 10, 0 }} }, |
2825 | { Hexagon::BI__builtin_HEXAGON_F2_sfclass, {{ 1, false, 5, 0 }} }, |
2826 | { Hexagon::BI__builtin_HEXAGON_F2_sfimm_n, {{ 0, false, 10, 0 }} }, |
2827 | { Hexagon::BI__builtin_HEXAGON_F2_sfimm_p, {{ 0, false, 10, 0 }} }, |
2828 | { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addi, {{ 2, false, 6, 0 }} }, |
2829 | { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addr_u2, {{ 1, false, 6, 2 }} }, |
2830 | { Hexagon::BI__builtin_HEXAGON_S2_addasl_rrri, {{ 2, false, 3, 0 }} }, |
2831 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_acc, {{ 2, false, 6, 0 }} }, |
2832 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_and, {{ 2, false, 6, 0 }} }, |
2833 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p, {{ 1, false, 6, 0 }} }, |
2834 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_nac, {{ 2, false, 6, 0 }} }, |
2835 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_or, {{ 2, false, 6, 0 }} }, |
2836 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_xacc, {{ 2, false, 6, 0 }} }, |
2837 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_acc, {{ 2, false, 5, 0 }} }, |
2838 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_and, {{ 2, false, 5, 0 }} }, |
2839 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r, {{ 1, false, 5, 0 }} }, |
2840 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_nac, {{ 2, false, 5, 0 }} }, |
2841 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_or, {{ 2, false, 5, 0 }} }, |
2842 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_sat, {{ 1, false, 5, 0 }} }, |
2843 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_xacc, {{ 2, false, 5, 0 }} }, |
2844 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vh, {{ 1, false, 4, 0 }} }, |
2845 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vw, {{ 1, false, 5, 0 }} }, |
2846 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_acc, {{ 2, false, 6, 0 }} }, |
2847 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_and, {{ 2, false, 6, 0 }} }, |
2848 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p, {{ 1, false, 6, 0 }} }, |
2849 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_nac, {{ 2, false, 6, 0 }} }, |
2850 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_or, {{ 2, false, 6, 0 }} }, |
2851 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd_goodsyntax, |
2852 | {{ 1, false, 6, 0 }} }, |
2853 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd, {{ 1, false, 6, 0 }} }, |
2854 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_acc, {{ 2, false, 5, 0 }} }, |
2855 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_and, {{ 2, false, 5, 0 }} }, |
2856 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r, {{ 1, false, 5, 0 }} }, |
2857 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_nac, {{ 2, false, 5, 0 }} }, |
2858 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_or, {{ 2, false, 5, 0 }} }, |
2859 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd_goodsyntax, |
2860 | {{ 1, false, 5, 0 }} }, |
2861 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd, {{ 1, false, 5, 0 }} }, |
2862 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_svw_trun, {{ 1, false, 5, 0 }} }, |
2863 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vh, {{ 1, false, 4, 0 }} }, |
2864 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vw, {{ 1, false, 5, 0 }} }, |
2865 | { Hexagon::BI__builtin_HEXAGON_S2_clrbit_i, {{ 1, false, 5, 0 }} }, |
2866 | { Hexagon::BI__builtin_HEXAGON_S2_extractu, {{ 1, false, 5, 0 }, |
2867 | { 2, false, 5, 0 }} }, |
2868 | { Hexagon::BI__builtin_HEXAGON_S2_extractup, {{ 1, false, 6, 0 }, |
2869 | { 2, false, 6, 0 }} }, |
2870 | { Hexagon::BI__builtin_HEXAGON_S2_insert, {{ 2, false, 5, 0 }, |
2871 | { 3, false, 5, 0 }} }, |
2872 | { Hexagon::BI__builtin_HEXAGON_S2_insertp, {{ 2, false, 6, 0 }, |
2873 | { 3, false, 6, 0 }} }, |
2874 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_acc, {{ 2, false, 6, 0 }} }, |
2875 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_and, {{ 2, false, 6, 0 }} }, |
2876 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p, {{ 1, false, 6, 0 }} }, |
2877 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_nac, {{ 2, false, 6, 0 }} }, |
2878 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_or, {{ 2, false, 6, 0 }} }, |
2879 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_xacc, {{ 2, false, 6, 0 }} }, |
2880 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_acc, {{ 2, false, 5, 0 }} }, |
2881 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_and, {{ 2, false, 5, 0 }} }, |
2882 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r, {{ 1, false, 5, 0 }} }, |
2883 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_nac, {{ 2, false, 5, 0 }} }, |
2884 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_or, {{ 2, false, 5, 0 }} }, |
2885 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_xacc, {{ 2, false, 5, 0 }} }, |
2886 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vh, {{ 1, false, 4, 0 }} }, |
2887 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vw, {{ 1, false, 5, 0 }} }, |
2888 | { Hexagon::BI__builtin_HEXAGON_S2_setbit_i, {{ 1, false, 5, 0 }} }, |
2889 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxb_goodsyntax, |
2890 | {{ 2, false, 4, 0 }, |
2891 | { 3, false, 5, 0 }} }, |
2892 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxd_goodsyntax, |
2893 | {{ 2, false, 4, 0 }, |
2894 | { 3, false, 5, 0 }} }, |
2895 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxh_goodsyntax, |
2896 | {{ 2, false, 4, 0 }, |
2897 | { 3, false, 5, 0 }} }, |
2898 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxw_goodsyntax, |
2899 | {{ 2, false, 4, 0 }, |
2900 | { 3, false, 5, 0 }} }, |
2901 | { Hexagon::BI__builtin_HEXAGON_S2_togglebit_i, {{ 1, false, 5, 0 }} }, |
2902 | { Hexagon::BI__builtin_HEXAGON_S2_tstbit_i, {{ 1, false, 5, 0 }} }, |
2903 | { Hexagon::BI__builtin_HEXAGON_S2_valignib, {{ 2, false, 3, 0 }} }, |
2904 | { Hexagon::BI__builtin_HEXAGON_S2_vspliceib, {{ 2, false, 3, 0 }} }, |
2905 | { Hexagon::BI__builtin_HEXAGON_S4_addi_asl_ri, {{ 2, false, 5, 0 }} }, |
2906 | { Hexagon::BI__builtin_HEXAGON_S4_addi_lsr_ri, {{ 2, false, 5, 0 }} }, |
2907 | { Hexagon::BI__builtin_HEXAGON_S4_andi_asl_ri, {{ 2, false, 5, 0 }} }, |
2908 | { Hexagon::BI__builtin_HEXAGON_S4_andi_lsr_ri, {{ 2, false, 5, 0 }} }, |
2909 | { Hexagon::BI__builtin_HEXAGON_S4_clbaddi, {{ 1, true , 6, 0 }} }, |
2910 | { Hexagon::BI__builtin_HEXAGON_S4_clbpaddi, {{ 1, true, 6, 0 }} }, |
2911 | { Hexagon::BI__builtin_HEXAGON_S4_extract, {{ 1, false, 5, 0 }, |
2912 | { 2, false, 5, 0 }} }, |
2913 | { Hexagon::BI__builtin_HEXAGON_S4_extractp, {{ 1, false, 6, 0 }, |
2914 | { 2, false, 6, 0 }} }, |
2915 | { Hexagon::BI__builtin_HEXAGON_S4_lsli, {{ 0, true, 6, 0 }} }, |
2916 | { Hexagon::BI__builtin_HEXAGON_S4_ntstbit_i, {{ 1, false, 5, 0 }} }, |
2917 | { Hexagon::BI__builtin_HEXAGON_S4_ori_asl_ri, {{ 2, false, 5, 0 }} }, |
2918 | { Hexagon::BI__builtin_HEXAGON_S4_ori_lsr_ri, {{ 2, false, 5, 0 }} }, |
2919 | { Hexagon::BI__builtin_HEXAGON_S4_subi_asl_ri, {{ 2, false, 5, 0 }} }, |
2920 | { Hexagon::BI__builtin_HEXAGON_S4_subi_lsr_ri, {{ 2, false, 5, 0 }} }, |
2921 | { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate_acc, {{ 3, false, 2, 0 }} }, |
2922 | { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate, {{ 2, false, 2, 0 }} }, |
2923 | { Hexagon::BI__builtin_HEXAGON_S5_asrhub_rnd_sat_goodsyntax, |
2924 | {{ 1, false, 4, 0 }} }, |
2925 | { Hexagon::BI__builtin_HEXAGON_S5_asrhub_sat, {{ 1, false, 4, 0 }} }, |
2926 | { Hexagon::BI__builtin_HEXAGON_S5_vasrhrnd_goodsyntax, |
2927 | {{ 1, false, 4, 0 }} }, |
2928 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {{ 1, false, 6, 0 }} }, |
2929 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {{ 2, false, 6, 0 }} }, |
2930 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {{ 2, false, 6, 0 }} }, |
2931 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {{ 2, false, 6, 0 }} }, |
2932 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {{ 2, false, 6, 0 }} }, |
2933 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {{ 2, false, 6, 0 }} }, |
2934 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {{ 1, false, 5, 0 }} }, |
2935 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {{ 2, false, 5, 0 }} }, |
2936 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {{ 2, false, 5, 0 }} }, |
2937 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {{ 2, false, 5, 0 }} }, |
2938 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {{ 2, false, 5, 0 }} }, |
2939 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {{ 2, false, 5, 0 }} }, |
2940 | { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {{ 2, false, 3, 0 }} }, |
2941 | { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {{ 2, false, 3, 0 }} }, |
2942 | { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {{ 2, false, 3, 0 }} }, |
2943 | { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {{ 2, false, 3, 0 }} }, |
2944 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {{ 2, false, 1, 0 }} }, |
2945 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {{ 2, false, 1, 0 }} }, |
2946 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {{ 3, false, 1, 0 }} }, |
2947 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, |
2948 | {{ 3, false, 1, 0 }} }, |
2949 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {{ 2, false, 1, 0 }} }, |
2950 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {{ 2, false, 1, 0 }} }, |
2951 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {{ 3, false, 1, 0 }} }, |
2952 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, |
2953 | {{ 3, false, 1, 0 }} }, |
2954 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {{ 2, false, 1, 0 }} }, |
2955 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {{ 2, false, 1, 0 }} }, |
2956 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {{ 3, false, 1, 0 }} }, |
2957 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, |
2958 | {{ 3, false, 1, 0 }} }, |
2959 | }; |
2960 | |
2961 | |
2962 | |
2963 | static const bool SortOnce = |
2964 | (llvm::sort(Infos, |
2965 | [](const BuiltinInfo &LHS, const BuiltinInfo &RHS) { |
2966 | return LHS.BuiltinID < RHS.BuiltinID; |
2967 | }), |
2968 | true); |
2969 | (void)SortOnce; |
2970 | |
2971 | const BuiltinInfo *F = llvm::partition_point( |
2972 | Infos, [=](const BuiltinInfo &BI) { return BI.BuiltinID < BuiltinID; }); |
2973 | if (F == std::end(Infos) || F->BuiltinID != BuiltinID) |
2974 | return false; |
2975 | |
2976 | bool Error = false; |
2977 | |
2978 | for (const ArgInfo &A : F->Infos) { |
2979 | |
2980 | if (A.BitWidth == 0) |
2981 | continue; |
2982 | |
2983 | int32_t Min = A.IsSigned ? -(1 << (A.BitWidth - 1)) : 0; |
2984 | int32_t Max = (1 << (A.IsSigned ? A.BitWidth - 1 : A.BitWidth)) - 1; |
2985 | if (!A.Align) { |
2986 | Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max); |
2987 | } else { |
2988 | unsigned M = 1 << A.Align; |
2989 | Min *= M; |
2990 | Max *= M; |
2991 | Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max) | |
2992 | SemaBuiltinConstantArgMultiple(TheCall, A.OpNum, M); |
2993 | } |
2994 | } |
2995 | return Error; |
2996 | } |
2997 | |
2998 | bool Sema::CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, |
2999 | CallExpr *TheCall) { |
3000 | return CheckHexagonBuiltinArgument(BuiltinID, TheCall); |
3001 | } |
3002 | |
3003 | bool Sema::CheckMipsBuiltinFunctionCall(const TargetInfo &TI, |
3004 | unsigned BuiltinID, CallExpr *TheCall) { |
3005 | return CheckMipsBuiltinCpu(TI, BuiltinID, TheCall) || |
3006 | CheckMipsBuiltinArgument(BuiltinID, TheCall); |
3007 | } |
3008 | |
3009 | bool Sema::CheckMipsBuiltinCpu(const TargetInfo &TI, unsigned BuiltinID, |
3010 | CallExpr *TheCall) { |
3011 | |
3012 | if (Mips::BI__builtin_mips_addu_qb <= BuiltinID && |
3013 | BuiltinID <= Mips::BI__builtin_mips_lwx) { |
3014 | if (!TI.hasFeature("dsp")) |
3015 | return Diag(TheCall->getBeginLoc(), diag::err_mips_builtin_requires_dsp); |
3016 | } |
3017 | |
3018 | if (Mips::BI__builtin_mips_absq_s_qb <= BuiltinID && |
3019 | BuiltinID <= Mips::BI__builtin_mips_subuh_r_qb) { |
3020 | if (!TI.hasFeature("dspr2")) |
3021 | return Diag(TheCall->getBeginLoc(), |
3022 | diag::err_mips_builtin_requires_dspr2); |
3023 | } |
3024 | |
3025 | if (Mips::BI__builtin_msa_add_a_b <= BuiltinID && |
3026 | BuiltinID <= Mips::BI__builtin_msa_xori_b) { |
3027 | if (!TI.hasFeature("msa")) |
3028 | return Diag(TheCall->getBeginLoc(), diag::err_mips_builtin_requires_msa); |
3029 | } |
3030 | |
3031 | return false; |
3032 | } |
3033 | |
3034 | |
3035 | |
3036 | |
3037 | |
3038 | |
3039 | |
3040 | |
3041 | |
3042 | |
3043 | bool Sema::CheckMipsBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { |
3044 | unsigned i = 0, l = 0, u = 0, m = 0; |
3045 | switch (BuiltinID) { |
3046 | default: return false; |
3047 | case Mips::BI__builtin_mips_wrdsp: i = 1; l = 0; u = 63; break; |
3048 | case Mips::BI__builtin_mips_rddsp: i = 0; l = 0; u = 63; break; |
3049 | case Mips::BI__builtin_mips_append: i = 2; l = 0; u = 31; break; |
3050 | case Mips::BI__builtin_mips_balign: i = 2; l = 0; u = 3; break; |
3051 | case Mips::BI__builtin_mips_precr_sra_ph_w: i = 2; l = 0; u = 31; break; |
3052 | case Mips::BI__builtin_mips_precr_sra_r_ph_w: i = 2; l = 0; u = 31; break; |
3053 | case Mips::BI__builtin_mips_prepend: i = 2; l = 0; u = 31; break; |
3054 | |
3055 | |
3056 | |
3057 | case Mips::BI__builtin_msa_bclri_b: |
3058 | case Mips::BI__builtin_msa_bnegi_b: |
3059 | case Mips::BI__builtin_msa_bseti_b: |
3060 | case Mips::BI__builtin_msa_sat_s_b: |
3061 | case Mips::BI__builtin_msa_sat_u_b: |
3062 | case Mips::BI__builtin_msa_slli_b: |
3063 | case Mips::BI__builtin_msa_srai_b: |
3064 | case Mips::BI__builtin_msa_srari_b: |
3065 | case Mips::BI__builtin_msa_srli_b: |
3066 | case Mips::BI__builtin_msa_srlri_b: i = 1; l = 0; u = 7; break; |
3067 | case Mips::BI__builtin_msa_binsli_b: |
3068 | case Mips::BI__builtin_msa_binsri_b: i = 2; l = 0; u = 7; break; |
3069 | |
3070 | case Mips::BI__builtin_msa_bclri_h: |
3071 | case Mips::BI__builtin_msa_bnegi_h: |
3072 | case Mips::BI__builtin_msa_bseti_h: |
3073 | case Mips::BI__builtin_msa_sat_s_h: |
3074 | case Mips::BI__builtin_msa_sat_u_h: |
3075 | case Mips::BI__builtin_msa_slli_h: |
3076 | case Mips::BI__builtin_msa_srai_h: |
3077 | case Mips::BI__builtin_msa_srari_h: |
3078 | case Mips::BI__builtin_msa_srli_h: |
3079 | case Mips::BI__builtin_msa_srlri_h: i = 1; l = 0; u = 15; break; |
3080 | case Mips::BI__builtin_msa_binsli_h: |
3081 | case Mips::BI__builtin_msa_binsri_h: i = 2; l = 0; u = 15; break; |
3082 | |
3083 | |
3084 | |
3085 | case Mips::BI__builtin_msa_cfcmsa: |
3086 | case Mips::BI__builtin_msa_ctcmsa: i = 0; l = 0; u = 31; break; |
3087 | case Mips::BI__builtin_msa_clei_u_b: |
3088 | case Mips::BI__builtin_msa_clei_u_h: |
3089 | case Mips::BI__builtin_msa_clei_u_w: |
3090 | case Mips::BI__builtin_msa_clei_u_d: |
3091 | case Mips::BI__builtin_msa_clti_u_b: |
3092 | case Mips::BI__builtin_msa_clti_u_h: |
3093 | case Mips::BI__builtin_msa_clti_u_w: |
3094 | case Mips::BI__builtin_msa_clti_u_d: |
3095 | case Mips::BI__builtin_msa_maxi_u_b: |
3096 | case Mips::BI__builtin_msa_maxi_u_h: |
3097 | case Mips::BI__builtin_msa_maxi_u_w: |
3098 | case Mips::BI__builtin_msa_maxi_u_d: |
3099 | case Mips::BI__builtin_msa_mini_u_b: |
3100 | case Mips::BI__builtin_msa_mini_u_h: |
3101 | case Mips::BI__builtin_msa_mini_u_w: |
3102 | case Mips::BI__builtin_msa_mini_u_d: |
3103 | case Mips::BI__builtin_msa_addvi_b: |
3104 | case Mips::BI__builtin_msa_addvi_h: |
3105 | case Mips::BI__builtin_msa_addvi_w: |
3106 | case Mips::BI__builtin_msa_addvi_d: |
3107 | case Mips::BI__builtin_msa_bclri_w: |
3108 | case Mips::BI__builtin_msa_bnegi_w: |
3109 | case Mips::BI__builtin_msa_bseti_w: |
3110 | case Mips::BI__builtin_msa_sat_s_w: |
3111 | case Mips::BI__builtin_msa_sat_u_w: |
3112 | case Mips::BI__builtin_msa_slli_w: |
3113 | case Mips::BI__builtin_msa_srai_w: |
3114 | case Mips::BI__builtin_msa_srari_w: |
3115 | case Mips::BI__builtin_msa_srli_w: |
3116 | case Mips::BI__builtin_msa_srlri_w: |
3117 | case Mips::BI__builtin_msa_subvi_b: |
3118 | case Mips::BI__builtin_msa_subvi_h: |
3119 | case Mips::BI__builtin_msa_subvi_w: |
3120 | case Mips::BI__builtin_msa_subvi_d: i = 1; l = 0; u = 31; break; |
3121 | case Mips::BI__builtin_msa_binsli_w: |
3122 | case Mips::BI__builtin_msa_binsri_w: i = 2; l = 0; u = 31; break; |
3123 | |
3124 | case Mips::BI__builtin_msa_bclri_d: |
3125 | case Mips::BI__builtin_msa_bnegi_d: |
3126 | case Mips::BI__builtin_msa_bseti_d: |
3127 | case Mips::BI__builtin_msa_sat_s_d: |
3128 | case Mips::BI__builtin_msa_sat_u_d: |
3129 | case Mips::BI__builtin_msa_slli_d: |
3130 | case Mips::BI__builtin_msa_srai_d: |
3131 | case Mips::BI__builtin_msa_srari_d: |
3132 | case Mips::BI__builtin_msa_srli_d: |
3133 | case Mips::BI__builtin_msa_srlri_d: i = 1; l = 0; u = 63; break; |
3134 | case Mips::BI__builtin_msa_binsli_d: |
3135 | case Mips::BI__builtin_msa_binsri_d: i = 2; l = 0; u = 63; break; |
3136 | |
3137 | case Mips::BI__builtin_msa_ceqi_b: |
3138 | case Mips::BI__builtin_msa_ceqi_h: |
3139 | case Mips::BI__builtin_msa_ceqi_w: |
3140 | case Mips::BI__builtin_msa_ceqi_d: |
3141 | case Mips::BI__builtin_msa_clti_s_b: |
3142 | case Mips::BI__builtin_msa_clti_s_h: |
3143 | case Mips::BI__builtin_msa_clti_s_w: |
3144 | case Mips::BI__builtin_msa_clti_s_d: |
3145 | case Mips::BI__builtin_msa_clei_s_b: |
3146 | case Mips::BI__builtin_msa_clei_s_h: |
3147 | case Mips::BI__builtin_msa_clei_s_w: |
3148 | case Mips::BI__builtin_msa_clei_s_d: |
3149 | case Mips::BI__builtin_msa_maxi_s_b: |
3150 | case Mips::BI__builtin_msa_maxi_s_h: |
3151 | case Mips::BI__builtin_msa_maxi_s_w: |
3152 | case Mips::BI__builtin_msa_maxi_s_d: |
3153 | case Mips::BI__builtin_msa_mini_s_b: |
3154 | case Mips::BI__builtin_msa_mini_s_h: |
3155 | case Mips::BI__builtin_msa_mini_s_w: |
3156 | case Mips::BI__builtin_msa_mini_s_d: i = 1; l = -16; u = 15; break; |
3157 | |
3158 | case Mips::BI__builtin_msa_andi_b: |
3159 | case Mips::BI__builtin_msa_nori_b: |
3160 | case Mips::BI__builtin_msa_ori_b: |
3161 | case Mips::BI__builtin_msa_shf_b: |
3162 | case Mips::BI__builtin_msa_shf_h: |
3163 | case Mips::BI__builtin_msa_shf_w: |
3164 | case Mips::BI__builtin_msa_xori_b: i = 1; l = 0; u = 255; break; |
3165 | case Mips::BI__builtin_msa_bseli_b: |
3166 | case Mips::BI__builtin_msa_bmnzi_b: |
3167 | case Mips::BI__builtin_msa_bmzi_b: i = 2; l = 0; u = 255; break; |
3168 | |
3169 | |
3170 | case Mips::BI__builtin_msa_copy_s_b: |
3171 | case Mips::BI__builtin_msa_copy_u_b: |
3172 | case Mips::BI__builtin_msa_insve_b: |
3173 | case Mips::BI__builtin_msa_splati_b: i = 1; l = 0; u = 15; break; |
3174 | case Mips::BI__builtin_msa_sldi_b: i = 2; l = 0; u = 15; break; |
3175 | |
3176 | case Mips::BI__builtin_msa_copy_s_h: |
3177 | case Mips::BI__builtin_msa_copy_u_h: |
3178 | case Mips::BI__builtin_msa_insve_h: |
3179 | case Mips::BI__builtin_msa_splati_h: i = 1; l = 0; u = 7; break; |
3180 | case Mips::BI__builtin_msa_sldi_h: i = 2; l = 0; u = 7; break; |
3181 | |
3182 | case Mips::BI__builtin_msa_copy_s_w: |
3183 | case Mips::BI__builtin_msa_copy_u_w: |
3184 | case Mips::BI__builtin_msa_insve_w: |
3185 | case Mips::BI__builtin_msa_splati_w: i = 1; l = 0; u = 3; break; |
3186 | case Mips::BI__builtin_msa_sldi_w: i = 2; l = 0; u = 3; break; |
3187 | |
3188 | case Mips::BI__builtin_msa_copy_s_d: |
3189 | case Mips::BI__builtin_msa_copy_u_d: |
3190 | case Mips::BI__builtin_msa_insve_d: |
3191 | case Mips::BI__builtin_msa_splati_d: i = 1; l = 0; u = 1; break; |
3192 | case Mips::BI__builtin_msa_sldi_d: i = 2; l = 0; u = 1; break; |
3193 | |
3194 | |
3195 | case Mips::BI__builtin_msa_ldi_b: i = 0; l = -128; u = 255; break; |
3196 | case Mips::BI__builtin_msa_ldi_h: |
3197 | case Mips::BI__builtin_msa_ldi_w: |
3198 | case Mips::BI__builtin_msa_ldi_d: i = 0; l = -512; u = 511; break; |
3199 | case Mips::BI__builtin_msa_ld_b: i = 1; l = -512; u = 511; m = 1; break; |
3200 | case Mips::BI__builtin_msa_ld_h: i = 1; l = -1024; u = 1022; m = 2; break; |
3201 | case Mips::BI__builtin_msa_ld_w: i = 1; l = -2048; u = 2044; m = 4; break; |
3202 | case Mips::BI__builtin_msa_ld_d: i = 1; l = -4096; u = 4088; m = 8; break; |
3203 | case Mips::BI__builtin_msa_ldr_d: i = 1; l = -4096; u = 4088; m = 8; break; |
3204 | case Mips::BI__builtin_msa_ldr_w: i = 1; l = -2048; u = 2044; m = 4; break; |
3205 | case Mips::BI__builtin_msa_st_b: i = 2; l = -512; u = 511; m = 1; break; |
3206 | case Mips::BI__builtin_msa_st_h: i = 2; l = -1024; u = 1022; m = 2; break; |
3207 | case Mips::BI__builtin_msa_st_w: i = 2; l = -2048; u = 2044; m = 4; break; |
3208 | case Mips::BI__builtin_msa_st_d: i = 2; l = -4096; u = 4088; m = 8; break; |
3209 | case Mips::BI__builtin_msa_str_d: i = 2; l = -4096; u = 4088; m = 8; break; |
3210 | case Mips::BI__builtin_msa_str_w: i = 2; l = -2048; u = 2044; m = 4; break; |
3211 | } |
3212 | |
3213 | if (!m) |
3214 | return SemaBuiltinConstantArgRange(TheCall, i, l, u); |
3215 | |
3216 | return SemaBuiltinConstantArgRange(TheCall, i, l, u) || |
3217 | SemaBuiltinConstantArgMultiple(TheCall, i, m); |
3218 | } |
3219 | |
3220 | |
3221 | |
3222 | |
3223 | |
3224 | |
3225 | |
3226 | static QualType DecodePPCMMATypeFromStr(ASTContext &Context, const char *&Str, |
3227 | unsigned &Mask) { |
3228 | bool RequireICE = false; |
3229 | ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; |
3230 | switch (*Str++) { |
3231 | case 'V': |
3232 | return Context.getVectorType(Context.UnsignedCharTy, 16, |
3233 | VectorType::VectorKind::AltiVecVector); |
3234 | case 'i': { |
3235 | char *End; |
3236 | unsigned size = strtoul(Str, &End, 10); |
3237 | assert(End != Str && "Missing constant parameter constraint"); |
3238 | Str = End; |
3239 | Mask = size; |
3240 | return Context.IntTy; |
3241 | } |
3242 | case 'W': { |
3243 | char *End; |
3244 | unsigned size = strtoul(Str, &End, 10); |
3245 | assert(End != Str && "Missing PowerPC MMA type size"); |
3246 | Str = End; |
3247 | QualType Type; |
3248 | switch (size) { |
3249 | #define PPC_VECTOR_TYPE(typeName, Id, size) \ |
3250 | case size: Type = Context.Id##Ty; break; |
3251 | #include "clang/Basic/PPCTypes.def" |
3252 | default: llvm_unreachable("Invalid PowerPC MMA vector type"); |
3253 | } |
3254 | bool CheckVectorArgs = false; |
3255 | while (!CheckVectorArgs) { |
3256 | switch (*Str++) { |
3257 | case '*': |
3258 | Type = Context.getPointerType(Type); |
3259 | break; |
3260 | case 'C': |
3261 | Type = Type.withConst(); |
3262 | break; |
3263 | default: |
3264 | CheckVectorArgs = true; |
3265 | --Str; |
3266 | break; |
3267 | } |
3268 | } |
3269 | return Type; |
3270 | } |
3271 | default: |
3272 | return Context.DecodeTypeStr(--Str, Context, Error, RequireICE, true); |
3273 | } |
3274 | } |
3275 | |
3276 | static bool isPPC_64Builtin(unsigned BuiltinID) { |
3277 | |
3278 | switch (BuiltinID) { |
3279 | case PPC::BI__builtin_divde: |
3280 | case PPC::BI__builtin_divdeu: |
3281 | case PPC::BI__builtin_bpermd: |
3282 | case PPC::BI__builtin_ppc_ldarx: |
3283 | case PPC::BI__builtin_ppc_stdcx: |
3284 | case PPC::BI__builtin_ppc_tdw: |
3285 | case PPC::BI__builtin_ppc_trapd: |
3286 | case PPC::BI__builtin_ppc_cmpeqb: |
3287 | case PPC::BI__builtin_ppc_setb: |
3288 | case PPC::BI__builtin_ppc_mulhd: |
3289 | case PPC::BI__builtin_ppc_mulhdu: |
3290 | case PPC::BI__builtin_ppc_maddhd: |
3291 | case PPC::BI__builtin_ppc_maddhdu: |
3292 | case PPC::BI__builtin_ppc_maddld: |
3293 | case PPC::BI__builtin_ppc_load8r: |
3294 | case PPC::BI__builtin_ppc_store8r: |
3295 | case PPC::BI__builtin_ppc_insert_exp: |
3296 | case PPC::BI__builtin_ppc_extract_sig: |
3297 | case PPC::BI__builtin_ppc_addex: |
3298 | return true; |
3299 | } |
3300 | return false; |
3301 | } |
3302 | |
3303 | static bool SemaFeatureCheck(Sema &S, CallExpr *TheCall, |
3304 | StringRef FeatureToCheck, unsigned DiagID, |
3305 | StringRef DiagArg = "") { |
3306 | if (S.Context.getTargetInfo().hasFeature(FeatureToCheck)) |
3307 | return false; |
3308 | |
3309 | if (DiagArg.empty()) |
3310 | S.Diag(TheCall->getBeginLoc(), DiagID) << TheCall->getSourceRange(); |
3311 | else |
3312 | S.Diag(TheCall->getBeginLoc(), DiagID) |
3313 | << DiagArg << TheCall->getSourceRange(); |
3314 | |
3315 | return true; |
3316 | } |
3317 | |
3318 | |
3319 | |
3320 | |
3321 | |
3322 | bool Sema::SemaValueIsRunOfOnes(CallExpr *TheCall, unsigned ArgNum) { |
3323 | llvm::APSInt Result; |
3324 | |
3325 | Expr *Arg = TheCall->getArg(ArgNum); |
3326 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
3327 | return false; |
3328 | |
3329 | |
3330 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
3331 | return true; |
3332 | |
3333 | |
3334 | if (Result.isShiftedMask() || (~Result).isShiftedMask()) |
3335 | return false; |
3336 | |
3337 | return Diag(TheCall->getBeginLoc(), |
3338 | diag::err_argument_not_contiguous_bit_field) |
3339 | << ArgNum << Arg->getSourceRange(); |
3340 | } |
3341 | |
3342 | bool Sema::CheckPPCBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
3343 | CallExpr *TheCall) { |
3344 | unsigned i = 0, l = 0, u = 0; |
3345 | bool IsTarget64Bit = TI.getTypeWidth(TI.getIntPtrType()) == 64; |
3346 | llvm::APSInt Result; |
3347 | |
3348 | if (isPPC_64Builtin(BuiltinID) && !IsTarget64Bit) |
3349 | return Diag(TheCall->getBeginLoc(), diag::err_64_bit_builtin_32_bit_tgt) |
3350 | << TheCall->getSourceRange(); |
3351 | |
3352 | switch (BuiltinID) { |
3353 | default: return false; |
3354 | case PPC::BI__builtin_altivec_crypto_vshasigmaw: |
3355 | case PPC::BI__builtin_altivec_crypto_vshasigmad: |
3356 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || |
3357 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 15); |
3358 | case PPC::BI__builtin_altivec_dss: |
3359 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 3); |
3360 | case PPC::BI__builtin_tbegin: |
3361 | case PPC::BI__builtin_tend: i = 0; l = 0; u = 1; break; |
3362 | case PPC::BI__builtin_tsr: i = 0; l = 0; u = 7; break; |
3363 | case PPC::BI__builtin_tabortwc: |
3364 | case PPC::BI__builtin_tabortdc: i = 0; l = 0; u = 31; break; |
3365 | case PPC::BI__builtin_tabortwci: |
3366 | case PPC::BI__builtin_tabortdci: |
3367 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31) || |
3368 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 31); |
3369 | case PPC::BI__builtin_altivec_dst: |
3370 | case PPC::BI__builtin_altivec_dstt: |
3371 | case PPC::BI__builtin_altivec_dstst: |
3372 | case PPC::BI__builtin_altivec_dststt: |
3373 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, 3); |
3374 | case PPC::BI__builtin_vsx_xxpermdi: |
3375 | case PPC::BI__builtin_vsx_xxsldwi: |
3376 | return SemaBuiltinVSX(TheCall); |
3377 | case PPC::BI__builtin_divwe: |
3378 | case PPC::BI__builtin_divweu: |
3379 | case PPC::BI__builtin_divde: |
3380 | case PPC::BI__builtin_divdeu: |
3381 | return SemaFeatureCheck(*this, TheCall, "extdiv", |
3382 | diag::err_ppc_builtin_only_on_arch, "7"); |
3383 | case PPC::BI__builtin_bpermd: |
3384 | return SemaFeatureCheck(*this, TheCall, "bpermd", |
3385 | diag::err_ppc_builtin_only_on_arch, "7"); |
3386 | case PPC::BI__builtin_unpack_vector_int128: |
3387 | return SemaFeatureCheck(*this, TheCall, "vsx", |
3388 | diag::err_ppc_builtin_only_on_arch, "7") || |
3389 | SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
3390 | case PPC::BI__builtin_pack_vector_int128: |
3391 | return SemaFeatureCheck(*this, TheCall, "vsx", |
3392 | diag::err_ppc_builtin_only_on_arch, "7"); |
3393 | case PPC::BI__builtin_altivec_vgnb: |
3394 | return SemaBuiltinConstantArgRange(TheCall, 1, 2, 7); |
3395 | case PPC::BI__builtin_altivec_vec_replace_elt: |
3396 | case PPC::BI__builtin_altivec_vec_replace_unaligned: { |
3397 | QualType VecTy = TheCall->getArg(0)->getType(); |
3398 | QualType EltTy = TheCall->getArg(1)->getType(); |
3399 | unsigned Width = Context.getIntWidth(EltTy); |
3400 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, Width == 32 ? 12 : 8) || |
3401 | !isEltOfVectorTy(Context, TheCall, *this, VecTy, EltTy); |
3402 | } |
3403 | case PPC::BI__builtin_vsx_xxeval: |
3404 | return SemaBuiltinConstantArgRange(TheCall, 3, 0, 255); |
3405 | case PPC::BI__builtin_altivec_vsldbi: |
3406 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, 7); |
3407 | case PPC::BI__builtin_altivec_vsrdbi: |
3408 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, 7); |
3409 | case PPC::BI__builtin_vsx_xxpermx: |
3410 | return SemaBuiltinConstantArgRange(TheCall, 3, 0, 7); |
3411 | case PPC::BI__builtin_ppc_tw: |
3412 | case PPC::BI__builtin_ppc_tdw: |
3413 | return SemaBuiltinConstantArgRange(TheCall, 2, 1, 31); |
3414 | case PPC::BI__builtin_ppc_cmpeqb: |
3415 | case PPC::BI__builtin_ppc_setb: |
3416 | case PPC::BI__builtin_ppc_maddhd: |
3417 | case PPC::BI__builtin_ppc_maddhdu: |
3418 | case PPC::BI__builtin_ppc_maddld: |
3419 | return SemaFeatureCheck(*this, TheCall, "isa-v30-instructions", |
3420 | diag::err_ppc_builtin_only_on_arch, "9"); |
3421 | case PPC::BI__builtin_ppc_cmprb: |
3422 | return SemaFeatureCheck(*this, TheCall, "isa-v30-instructions", |
3423 | diag::err_ppc_builtin_only_on_arch, "9") || |
3424 | SemaBuiltinConstantArgRange(TheCall, 0, 0, 1); |
3425 | |
3426 | |
3427 | case PPC::BI__builtin_ppc_rlwnm: |
3428 | return SemaBuiltinConstantArg(TheCall, 1, Result) || |
3429 | SemaValueIsRunOfOnes(TheCall, 2); |
3430 | case PPC::BI__builtin_ppc_rlwimi: |
3431 | case PPC::BI__builtin_ppc_rldimi: |
3432 | return SemaBuiltinConstantArg(TheCall, 2, Result) || |
3433 | SemaValueIsRunOfOnes(TheCall, 3); |
3434 | case PPC::BI__builtin_ppc_extract_exp: |
3435 | case PPC::BI__builtin_ppc_extract_sig: |
3436 | case PPC::BI__builtin_ppc_insert_exp: |
3437 | return SemaFeatureCheck(*this, TheCall, "power9-vector", |
3438 | diag::err_ppc_builtin_only_on_arch, "9"); |
3439 | case PPC::BI__builtin_ppc_addex: { |
3440 | if (SemaFeatureCheck(*this, TheCall, "isa-v30-instructions", |
3441 | diag::err_ppc_builtin_only_on_arch, "9") || |
3442 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 3)) |
3443 | return true; |
3444 | |
3445 | int ArgValue = |
3446 | TheCall->getArg(2)->getIntegerConstantExpr(Context)->getSExtValue(); |
3447 | if (ArgValue != 0) |
3448 | Diag(TheCall->getBeginLoc(), diag::warn_argument_undefined_behaviour) |
3449 | << ArgValue; |
3450 | return false; |
3451 | } |
3452 | case PPC::BI__builtin_ppc_mtfsb0: |
3453 | case PPC::BI__builtin_ppc_mtfsb1: |
3454 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31); |
3455 | case PPC::BI__builtin_ppc_mtfsf: |
3456 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 255); |
3457 | case PPC::BI__builtin_ppc_mtfsfi: |
3458 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 7) || |
3459 | SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
3460 | case PPC::BI__builtin_ppc_alignx: |
3461 | return SemaBuiltinConstantArgPower2(TheCall, 0); |
3462 | case PPC::BI__builtin_ppc_rdlam: |
3463 | return SemaValueIsRunOfOnes(TheCall, 2); |
3464 | case PPC::BI__builtin_ppc_icbt: |
3465 | case PPC::BI__builtin_ppc_sthcx: |
3466 | case PPC::BI__builtin_ppc_stbcx: |
3467 | case PPC::BI__builtin_ppc_lharx: |
3468 | case PPC::BI__builtin_ppc_lbarx: |
3469 | return SemaFeatureCheck(*this, TheCall, "isa-v207-instructions", |
3470 | diag::err_ppc_builtin_only_on_arch, "8"); |
3471 | case PPC::BI__builtin_vsx_ldrmb: |
3472 | case PPC::BI__builtin_vsx_strmb: |
3473 | return SemaFeatureCheck(*this, TheCall, "isa-v207-instructions", |
3474 | diag::err_ppc_builtin_only_on_arch, "8") || |
3475 | SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); |
3476 | #define CUSTOM_BUILTIN(Name, Intr, Types, Acc) \ |
3477 | case PPC::BI__builtin_##Name: \ |
3478 | return SemaBuiltinPPCMMACall(TheCall, Types); |
3479 | #include "clang/Basic/BuiltinsPPC.def" |
3480 | } |
3481 | return SemaBuiltinConstantArgRange(TheCall, i, l, u); |
3482 | } |
3483 | |
3484 | |
3485 | |
3486 | bool Sema::CheckPPCMMAType(QualType Type, SourceLocation TypeLoc) { |
3487 | if (Type->isPointerType() || Type->isArrayType()) |
3488 | return false; |
3489 | |
3490 | QualType CoreType = Type.getCanonicalType().getUnqualifiedType(); |
3491 | #define PPC_VECTOR_TYPE(Name, Id, Size) || CoreType == Context.Id##Ty |
3492 | if (false |
3493 | #include "clang/Basic/PPCTypes.def" |
3494 | ) { |
3495 | Diag(TypeLoc, diag::err_ppc_invalid_use_mma_type); |
3496 | return true; |
3497 | } |
3498 | return false; |
3499 | } |
3500 | |
3501 | bool Sema::CheckAMDGCNBuiltinFunctionCall(unsigned BuiltinID, |
3502 | CallExpr *TheCall) { |
3503 | |
3504 | unsigned OrderIndex, ScopeIndex; |
3505 | switch (BuiltinID) { |
3506 | case AMDGPU::BI__builtin_amdgcn_atomic_inc32: |
3507 | case AMDGPU::BI__builtin_amdgcn_atomic_inc64: |
3508 | case AMDGPU::BI__builtin_amdgcn_atomic_dec32: |
3509 | case AMDGPU::BI__builtin_amdgcn_atomic_dec64: |
3510 | OrderIndex = 2; |
3511 | ScopeIndex = 3; |
3512 | break; |
3513 | case AMDGPU::BI__builtin_amdgcn_fence: |
3514 | OrderIndex = 0; |
3515 | ScopeIndex = 1; |
3516 | break; |
3517 | default: |
3518 | return false; |
3519 | } |
3520 | |
3521 | ExprResult Arg = TheCall->getArg(OrderIndex); |
3522 | auto ArgExpr = Arg.get(); |
3523 | Expr::EvalResult ArgResult; |
3524 | |
3525 | if (!ArgExpr->EvaluateAsInt(ArgResult, Context)) |
3526 | return Diag(ArgExpr->getExprLoc(), diag::err_typecheck_expect_int) |
3527 | << ArgExpr->getType(); |
3528 | auto Ord = ArgResult.Val.getInt().getZExtValue(); |
3529 | |
3530 | |
3531 | |
3532 | if (!llvm::isValidAtomicOrderingCABI(Ord)) |
3533 | return Diag(ArgExpr->getBeginLoc(), |
3534 | diag::warn_atomic_op_has_invalid_memory_order) |
3535 | << ArgExpr->getSourceRange(); |
3536 | switch (static_cast<llvm::AtomicOrderingCABI>(Ord)) { |
3537 | case llvm::AtomicOrderingCABI::relaxed: |
3538 | case llvm::AtomicOrderingCABI::consume: |
3539 | if (BuiltinID == AMDGPU::BI__builtin_amdgcn_fence) |
3540 | return Diag(ArgExpr->getBeginLoc(), |
3541 | diag::warn_atomic_op_has_invalid_memory_order) |
3542 | << ArgExpr->getSourceRange(); |
3543 | break; |
3544 | case llvm::AtomicOrderingCABI::acquire: |
3545 | case llvm::AtomicOrderingCABI::release: |
3546 | case llvm::AtomicOrderingCABI::acq_rel: |
3547 | case llvm::AtomicOrderingCABI::seq_cst: |
3548 | break; |
3549 | } |
3550 | |
3551 | Arg = TheCall->getArg(ScopeIndex); |
3552 | ArgExpr = Arg.get(); |
3553 | Expr::EvalResult ArgResult1; |
3554 | |
3555 | if (!ArgExpr->EvaluateAsConstantExpr(ArgResult1, Context)) |
3556 | return Diag(ArgExpr->getExprLoc(), diag::err_expr_not_string_literal) |
3557 | << ArgExpr->getType(); |
3558 | |
3559 | return false; |
3560 | } |
3561 | |
3562 | bool Sema::CheckRISCVLMUL(CallExpr *TheCall, unsigned ArgNum) { |
3563 | llvm::APSInt Result; |
3564 | |
3565 | |
3566 | Expr *Arg = TheCall->getArg(ArgNum); |
3567 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
3568 | return false; |
3569 | |
3570 | |
3571 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
3572 | return true; |
3573 | |
3574 | int64_t Val = Result.getSExtValue(); |
3575 | if ((Val >= 0 && Val <= 3) || (Val >= 5 && Val <= 7)) |
3576 | return false; |
3577 | |
3578 | return Diag(TheCall->getBeginLoc(), diag::err_riscv_builtin_invalid_lmul) |
3579 | << Arg->getSourceRange(); |
3580 | } |
3581 | |
3582 | bool Sema::CheckRISCVBuiltinFunctionCall(const TargetInfo &TI, |
3583 | unsigned BuiltinID, |
3584 | CallExpr *TheCall) { |
3585 | |
3586 | |
3587 | bool FeatureMissing = false; |
3588 | SmallVector<StringRef> ReqFeatures; |
3589 | StringRef Features = Context.BuiltinInfo.getRequiredFeatures(BuiltinID); |
3590 | Features.split(ReqFeatures, ','); |
3591 | |
3592 | |
3593 | for (StringRef F : ReqFeatures) { |
3594 | if (TI.hasFeature(F)) |
3595 | continue; |
3596 | |
3597 | |
3598 | |
3599 | if (F == "64bit") |
3600 | F = "RV64"; |
3601 | |
3602 | |
3603 | F.consume_front("experimental-"); |
3604 | std::string FeatureStr = F.str(); |
3605 | FeatureStr[0] = std::toupper(FeatureStr[0]); |
3606 | |
3607 | |
3608 | FeatureMissing = true; |
3609 | Diag(TheCall->getBeginLoc(), diag::err_riscv_builtin_requires_extension) |
3610 | << TheCall->getSourceRange() << StringRef(FeatureStr); |
3611 | } |
3612 | |
3613 | if (FeatureMissing) |
3614 | return true; |
3615 | |
3616 | switch (BuiltinID) { |
3617 | case RISCV::BI__builtin_rvv_vsetvli: |
3618 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3) || |
3619 | CheckRISCVLMUL(TheCall, 2); |
3620 | case RISCV::BI__builtin_rvv_vsetvlimax: |
3621 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 3) || |
3622 | CheckRISCVLMUL(TheCall, 1); |
3623 | case RISCV::BI__builtin_rvv_vget_v_i8m2_i8m1: |
3624 | case RISCV::BI__builtin_rvv_vget_v_i16m2_i16m1: |
3625 | case RISCV::BI__builtin_rvv_vget_v_i32m2_i32m1: |
3626 | case RISCV::BI__builtin_rvv_vget_v_i64m2_i64m1: |
3627 | case RISCV::BI__builtin_rvv_vget_v_f32m2_f32m1: |
3628 | case RISCV::BI__builtin_rvv_vget_v_f64m2_f64m1: |
3629 | case RISCV::BI__builtin_rvv_vget_v_u8m2_u8m1: |
3630 | case RISCV::BI__builtin_rvv_vget_v_u16m2_u16m1: |
3631 | case RISCV::BI__builtin_rvv_vget_v_u32m2_u32m1: |
3632 | case RISCV::BI__builtin_rvv_vget_v_u64m2_u64m1: |
3633 | case RISCV::BI__builtin_rvv_vget_v_i8m4_i8m2: |
3634 | case RISCV::BI__builtin_rvv_vget_v_i16m4_i16m2: |
3635 | case RISCV::BI__builtin_rvv_vget_v_i32m4_i32m2: |
3636 | case RISCV::BI__builtin_rvv_vget_v_i64m4_i64m2: |
3637 | case RISCV::BI__builtin_rvv_vget_v_f32m4_f32m2: |
3638 | case RISCV::BI__builtin_rvv_vget_v_f64m4_f64m2: |
3639 | case RISCV::BI__builtin_rvv_vget_v_u8m4_u8m2: |
3640 | case RISCV::BI__builtin_rvv_vget_v_u16m4_u16m2: |
3641 | case RISCV::BI__builtin_rvv_vget_v_u32m4_u32m2: |
3642 | case RISCV::BI__builtin_rvv_vget_v_u64m4_u64m2: |
3643 | case RISCV::BI__builtin_rvv_vget_v_i8m8_i8m4: |
3644 | case RISCV::BI__builtin_rvv_vget_v_i16m8_i16m4: |
3645 | case RISCV::BI__builtin_rvv_vget_v_i32m8_i32m4: |
3646 | case RISCV::BI__builtin_rvv_vget_v_i64m8_i64m4: |
3647 | case RISCV::BI__builtin_rvv_vget_v_f32m8_f32m4: |
3648 | case RISCV::BI__builtin_rvv_vget_v_f64m8_f64m4: |
3649 | case RISCV::BI__builtin_rvv_vget_v_u8m8_u8m4: |
3650 | case RISCV::BI__builtin_rvv_vget_v_u16m8_u16m4: |
3651 | case RISCV::BI__builtin_rvv_vget_v_u32m8_u32m4: |
3652 | case RISCV::BI__builtin_rvv_vget_v_u64m8_u64m4: |
3653 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
3654 | case RISCV::BI__builtin_rvv_vget_v_i8m4_i8m1: |
3655 | case RISCV::BI__builtin_rvv_vget_v_i16m4_i16m1: |
3656 | case RISCV::BI__builtin_rvv_vget_v_i32m4_i32m1: |
3657 | case RISCV::BI__builtin_rvv_vget_v_i64m4_i64m1: |
3658 | case RISCV::BI__builtin_rvv_vget_v_f32m4_f32m1: |
3659 | case RISCV::BI__builtin_rvv_vget_v_f64m4_f64m1: |
3660 | case RISCV::BI__builtin_rvv_vget_v_u8m4_u8m1: |
3661 | case RISCV::BI__builtin_rvv_vget_v_u16m4_u16m1: |
3662 | case RISCV::BI__builtin_rvv_vget_v_u32m4_u32m1: |
3663 | case RISCV::BI__builtin_rvv_vget_v_u64m4_u64m1: |
3664 | case RISCV::BI__builtin_rvv_vget_v_i8m8_i8m2: |
3665 | case RISCV::BI__builtin_rvv_vget_v_i16m8_i16m2: |
3666 | case RISCV::BI__builtin_rvv_vget_v_i32m8_i32m2: |
3667 | case RISCV::BI__builtin_rvv_vget_v_i64m8_i64m2: |
3668 | case RISCV::BI__builtin_rvv_vget_v_f32m8_f32m2: |
3669 | case RISCV::BI__builtin_rvv_vget_v_f64m8_f64m2: |
3670 | case RISCV::BI__builtin_rvv_vget_v_u8m8_u8m2: |
3671 | case RISCV::BI__builtin_rvv_vget_v_u16m8_u16m2: |
3672 | case RISCV::BI__builtin_rvv_vget_v_u32m8_u32m2: |
3673 | case RISCV::BI__builtin_rvv_vget_v_u64m8_u64m2: |
3674 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); |
3675 | case RISCV::BI__builtin_rvv_vget_v_i8m8_i8m1: |
3676 | case RISCV::BI__builtin_rvv_vget_v_i16m8_i16m1: |
3677 | case RISCV::BI__builtin_rvv_vget_v_i32m8_i32m1: |
3678 | case RISCV::BI__builtin_rvv_vget_v_i64m8_i64m1: |
3679 | case RISCV::BI__builtin_rvv_vget_v_f32m8_f32m1: |
3680 | case RISCV::BI__builtin_rvv_vget_v_f64m8_f64m1: |
3681 | case RISCV::BI__builtin_rvv_vget_v_u8m8_u8m1: |
3682 | case RISCV::BI__builtin_rvv_vget_v_u16m8_u16m1: |
3683 | case RISCV::BI__builtin_rvv_vget_v_u32m8_u32m1: |
3684 | case RISCV::BI__builtin_rvv_vget_v_u64m8_u64m1: |
3685 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 7); |
3686 | case RISCV::BI__builtin_rvv_vset_v_i8m1_i8m2: |
3687 | case RISCV::BI__builtin_rvv_vset_v_i16m1_i16m2: |
3688 | case RISCV::BI__builtin_rvv_vset_v_i32m1_i32m2: |
3689 | case RISCV::BI__builtin_rvv_vset_v_i64m1_i64m2: |
3690 | case RISCV::BI__builtin_rvv_vset_v_f32m1_f32m2: |
3691 | case RISCV::BI__builtin_rvv_vset_v_f64m1_f64m2: |
3692 | case RISCV::BI__builtin_rvv_vset_v_u8m1_u8m2: |
3693 | case RISCV::BI__builtin_rvv_vset_v_u16m1_u16m2: |
3694 | case RISCV::BI__builtin_rvv_vset_v_u32m1_u32m2: |
3695 | case RISCV::BI__builtin_rvv_vset_v_u64m1_u64m2: |
3696 | case RISCV::BI__builtin_rvv_vset_v_i8m2_i8m4: |
3697 | case RISCV::BI__builtin_rvv_vset_v_i16m2_i16m4: |
3698 | case RISCV::BI__builtin_rvv_vset_v_i32m2_i32m4: |
3699 | case RISCV::BI__builtin_rvv_vset_v_i64m2_i64m4: |
3700 | case RISCV::BI__builtin_rvv_vset_v_f32m2_f32m4: |
3701 | case RISCV::BI__builtin_rvv_vset_v_f64m2_f64m4: |
3702 | case RISCV::BI__builtin_rvv_vset_v_u8m2_u8m4: |
3703 | case RISCV::BI__builtin_rvv_vset_v_u16m2_u16m4: |
3704 | case RISCV::BI__builtin_rvv_vset_v_u32m2_u32m4: |
3705 | case RISCV::BI__builtin_rvv_vset_v_u64m2_u64m4: |
3706 | case RISCV::BI__builtin_rvv_vset_v_i8m4_i8m8: |
3707 | case RISCV::BI__builtin_rvv_vset_v_i16m4_i16m8: |
3708 | case RISCV::BI__builtin_rvv_vset_v_i32m4_i32m8: |
3709 | case RISCV::BI__builtin_rvv_vset_v_i64m4_i64m8: |
3710 | case RISCV::BI__builtin_rvv_vset_v_f32m4_f32m8: |
3711 | case RISCV::BI__builtin_rvv_vset_v_f64m4_f64m8: |
3712 | case RISCV::BI__builtin_rvv_vset_v_u8m4_u8m8: |
3713 | case RISCV::BI__builtin_rvv_vset_v_u16m4_u16m8: |
3714 | case RISCV::BI__builtin_rvv_vset_v_u32m4_u32m8: |
3715 | case RISCV::BI__builtin_rvv_vset_v_u64m4_u64m8: |
3716 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
3717 | case RISCV::BI__builtin_rvv_vset_v_i8m1_i8m4: |
3718 | case RISCV::BI__builtin_rvv_vset_v_i16m1_i16m4: |
3719 | case RISCV::BI__builtin_rvv_vset_v_i32m1_i32m4: |
3720 | case RISCV::BI__builtin_rvv_vset_v_i64m1_i64m4: |
3721 | case RISCV::BI__builtin_rvv_vset_v_f32m1_f32m4: |
3722 | case RISCV::BI__builtin_rvv_vset_v_f64m1_f64m4: |
3723 | case RISCV::BI__builtin_rvv_vset_v_u8m1_u8m4: |
3724 | case RISCV::BI__builtin_rvv_vset_v_u16m1_u16m4: |
3725 | case RISCV::BI__builtin_rvv_vset_v_u32m1_u32m4: |
3726 | case RISCV::BI__builtin_rvv_vset_v_u64m1_u64m4: |
3727 | case RISCV::BI__builtin_rvv_vset_v_i8m2_i8m8: |
3728 | case RISCV::BI__builtin_rvv_vset_v_i16m2_i16m8: |
3729 | case RISCV::BI__builtin_rvv_vset_v_i32m2_i32m8: |
3730 | case RISCV::BI__builtin_rvv_vset_v_i64m2_i64m8: |
3731 | case RISCV::BI__builtin_rvv_vset_v_f32m2_f32m8: |
3732 | case RISCV::BI__builtin_rvv_vset_v_f64m2_f64m8: |
3733 | case RISCV::BI__builtin_rvv_vset_v_u8m2_u8m8: |
3734 | case RISCV::BI__builtin_rvv_vset_v_u16m2_u16m8: |
3735 | case RISCV::BI__builtin_rvv_vset_v_u32m2_u32m8: |
3736 | case RISCV::BI__builtin_rvv_vset_v_u64m2_u64m8: |
3737 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); |
3738 | case RISCV::BI__builtin_rvv_vset_v_i8m1_i8m8: |
3739 | case RISCV::BI__builtin_rvv_vset_v_i16m1_i16m8: |
3740 | case RISCV::BI__builtin_rvv_vset_v_i32m1_i32m8: |
3741 | case RISCV::BI__builtin_rvv_vset_v_i64m1_i64m8: |
3742 | case RISCV::BI__builtin_rvv_vset_v_f32m1_f32m8: |
3743 | case RISCV::BI__builtin_rvv_vset_v_f64m1_f64m8: |
3744 | case RISCV::BI__builtin_rvv_vset_v_u8m1_u8m8: |
3745 | case RISCV::BI__builtin_rvv_vset_v_u16m1_u16m8: |
3746 | case RISCV::BI__builtin_rvv_vset_v_u32m1_u32m8: |
3747 | case RISCV::BI__builtin_rvv_vset_v_u64m1_u64m8: |
3748 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 7); |
3749 | } |
3750 | |
3751 | return false; |
3752 | } |
3753 | |
3754 | bool Sema::CheckSystemZBuiltinFunctionCall(unsigned BuiltinID, |
3755 | CallExpr *TheCall) { |
3756 | if (BuiltinID == SystemZ::BI__builtin_tabort) { |
3757 | Expr *Arg = TheCall->getArg(0); |
3758 | if (Optional<llvm::APSInt> AbortCode = Arg->getIntegerConstantExpr(Context)) |
3759 | if (AbortCode->getSExtValue() >= 0 && AbortCode->getSExtValue() < 256) |
3760 | return Diag(Arg->getBeginLoc(), diag::err_systemz_invalid_tabort_code) |
3761 | << Arg->getSourceRange(); |
3762 | } |
3763 | |
3764 | |
3765 | |
3766 | unsigned i = 0, l = 0, u = 0; |
3767 | switch (BuiltinID) { |
3768 | default: return false; |
3769 | case SystemZ::BI__builtin_s390_lcbb: i = 1; l = 0; u = 15; break; |
3770 | case SystemZ::BI__builtin_s390_verimb: |
3771 | case SystemZ::BI__builtin_s390_verimh: |
3772 | case SystemZ::BI__builtin_s390_verimf: |
3773 | case SystemZ::BI__builtin_s390_verimg: i = 3; l = 0; u = 255; break; |
3774 | case SystemZ::BI__builtin_s390_vfaeb: |
3775 | case SystemZ::BI__builtin_s390_vfaeh: |
3776 | case SystemZ::BI__builtin_s390_vfaef: |
3777 | case SystemZ::BI__builtin_s390_vfaebs: |
3778 | case SystemZ::BI__builtin_s390_vfaehs: |
3779 | case SystemZ::BI__builtin_s390_vfaefs: |
3780 | case SystemZ::BI__builtin_s390_vfaezb: |
3781 | case SystemZ::BI__builtin_s390_vfaezh: |
3782 | case SystemZ::BI__builtin_s390_vfaezf: |
3783 | case SystemZ::BI__builtin_s390_vfaezbs: |
3784 | case SystemZ::BI__builtin_s390_vfaezhs: |
3785 | case SystemZ::BI__builtin_s390_vfaezfs: i = 2; l = 0; u = 15; break; |
3786 | case SystemZ::BI__builtin_s390_vfisb: |
3787 | case SystemZ::BI__builtin_s390_vfidb: |
3788 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15) || |
3789 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 15); |
3790 | case SystemZ::BI__builtin_s390_vftcisb: |
3791 | case SystemZ::BI__builtin_s390_vftcidb: i = 1; l = 0; u = 4095; break; |
3792 | case SystemZ::BI__builtin_s390_vlbb: i = 1; l = 0; u = 15; break; |
3793 | case SystemZ::BI__builtin_s390_vpdi: i = 2; l = 0; u = 15; break; |
3794 | case SystemZ::BI__builtin_s390_vsldb: i = 2; l = 0; u = 15; break; |
3795 | case SystemZ::BI__builtin_s390_vstrcb: |
3796 | case SystemZ::BI__builtin_s390_vstrch: |
3797 | case SystemZ::BI__builtin_s390_vstrcf: |
3798 | case SystemZ::BI__builtin_s390_vstrczb: |
3799 | case SystemZ::BI__builtin_s390_vstrczh: |
3800 | case SystemZ::BI__builtin_s390_vstrczf: |
3801 | case SystemZ::BI__builtin_s390_vstrcbs: |
3802 | case SystemZ::BI__builtin_s390_vstrchs: |
3803 | case SystemZ::BI__builtin_s390_vstrcfs: |
3804 | case SystemZ::BI__builtin_s390_vstrczbs: |
3805 | case SystemZ::BI__builtin_s390_vstrczhs: |
3806 | case SystemZ::BI__builtin_s390_vstrczfs: i = 3; l = 0; u = 15; break; |
3807 | case SystemZ::BI__builtin_s390_vmslg: i = 3; l = 0; u = 15; break; |
3808 | case SystemZ::BI__builtin_s390_vfminsb: |
3809 | case SystemZ::BI__builtin_s390_vfmaxsb: |
3810 | case SystemZ::BI__builtin_s390_vfmindb: |
3811 | case SystemZ::BI__builtin_s390_vfmaxdb: i = 2; l = 0; u = 15; break; |
3812 | case SystemZ::BI__builtin_s390_vsld: i = 2; l = 0; u = 7; break; |
3813 | case SystemZ::BI__builtin_s390_vsrd: i = 2; l = 0; u = 7; break; |
3814 | case SystemZ::BI__builtin_s390_vclfnhs: |
3815 | case SystemZ::BI__builtin_s390_vclfnls: |
3816 | case SystemZ::BI__builtin_s390_vcfn: |
3817 | case SystemZ::BI__builtin_s390_vcnf: i = 1; l = 0; u = 15; break; |
3818 | case SystemZ::BI__builtin_s390_vcrnfs: i = 2; l = 0; u = 15; break; |
3819 | } |
3820 | return SemaBuiltinConstantArgRange(TheCall, i, l, u); |
3821 | } |
3822 | |
3823 | |
3824 | |
3825 | |
3826 | static bool SemaBuiltinCpuSupports(Sema &S, const TargetInfo &TI, |
3827 | CallExpr *TheCall) { |
3828 | Expr *Arg = TheCall->getArg(0); |
3829 | |
3830 | |
3831 | if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts())) |
3832 | return S.Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal) |
3833 | << Arg->getSourceRange(); |
3834 | |
3835 | |
3836 | StringRef Feature = |
3837 | cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString(); |
3838 | if (!TI.validateCpuSupports(Feature)) |
3839 | return S.Diag(TheCall->getBeginLoc(), diag::err_invalid_cpu_supports) |
3840 | << Arg->getSourceRange(); |
3841 | return false; |
3842 | } |
3843 | |
3844 | |
3845 | |
3846 | |
3847 | static bool SemaBuiltinCpuIs(Sema &S, const TargetInfo &TI, CallExpr *TheCall) { |
3848 | Expr *Arg = TheCall->getArg(0); |
3849 | |
3850 | |
3851 | if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts())) |
3852 | return S.Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal) |
3853 | << Arg->getSourceRange(); |
3854 | |
3855 | |
3856 | StringRef Feature = |
3857 | cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString(); |
3858 | if (!TI.validateCpuIs(Feature)) |
3859 | return S.Diag(TheCall->getBeginLoc(), diag::err_invalid_cpu_is) |
3860 | << Arg->getSourceRange(); |
3861 | return false; |
3862 | } |
3863 | |
3864 | |
3865 | bool Sema::CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall) { |
3866 | |
3867 | bool HasRC = false; |
3868 | |
3869 | unsigned ArgNum = 0; |
3870 | switch (BuiltinID) { |
3871 | default: |
3872 | return false; |
3873 | case X86::BI__builtin_ia32_vcvttsd2si32: |
3874 | case X86::BI__builtin_ia32_vcvttsd2si64: |
3875 | case X86::BI__builtin_ia32_vcvttsd2usi32: |
3876 | case X86::BI__builtin_ia32_vcvttsd2usi64: |
3877 | case X86::BI__builtin_ia32_vcvttss2si32: |
3878 | case X86::BI__builtin_ia32_vcvttss2si64: |
3879 | case X86::BI__builtin_ia32_vcvttss2usi32: |
3880 | case X86::BI__builtin_ia32_vcvttss2usi64: |
3881 | case X86::BI__builtin_ia32_vcvttsh2si32: |
3882 | case X86::BI__builtin_ia32_vcvttsh2si64: |
3883 | case X86::BI__builtin_ia32_vcvttsh2usi32: |
3884 | case X86::BI__builtin_ia32_vcvttsh2usi64: |
3885 | ArgNum = 1; |
3886 | break; |
3887 | case X86::BI__builtin_ia32_maxpd512: |
3888 | case X86::BI__builtin_ia32_maxps512: |
3889 | case X86::BI__builtin_ia32_minpd512: |
3890 | case X86::BI__builtin_ia32_minps512: |
3891 | case X86::BI__builtin_ia32_maxph512: |
3892 | case X86::BI__builtin_ia32_minph512: |
3893 | ArgNum = 2; |
3894 | break; |
3895 | case X86::BI__builtin_ia32_vcvtph2pd512_mask: |
3896 | case X86::BI__builtin_ia32_vcvtph2psx512_mask: |
3897 | case X86::BI__builtin_ia32_cvtps2pd512_mask: |
3898 | case X86::BI__builtin_ia32_cvttpd2dq512_mask: |
3899 | case X86::BI__builtin_ia32_cvttpd2qq512_mask: |
3900 | case X86::BI__builtin_ia32_cvttpd2udq512_mask: |
3901 | case X86::BI__builtin_ia32_cvttpd2uqq512_mask: |
3902 | case X86::BI__builtin_ia32_cvttps2dq512_mask: |
3903 | case X86::BI__builtin_ia32_cvttps2qq512_mask: |
3904 | case X86::BI__builtin_ia32_cvttps2udq512_mask: |
3905 | case X86::BI__builtin_ia32_cvttps2uqq512_mask: |
3906 | case X86::BI__builtin_ia32_vcvttph2w512_mask: |
3907 | case X86::BI__builtin_ia32_vcvttph2uw512_mask: |
3908 | case X86::BI__builtin_ia32_vcvttph2dq512_mask: |
3909 | case X86::BI__builtin_ia32_vcvttph2udq512_mask: |
3910 | case X86::BI__builtin_ia32_vcvttph2qq512_mask: |
3911 | case X86::BI__builtin_ia32_vcvttph2uqq512_mask: |
3912 | case X86::BI__builtin_ia32_exp2pd_mask: |
3913 | case X86::BI__builtin_ia32_exp2ps_mask: |
3914 | case X86::BI__builtin_ia32_getexppd512_mask: |
3915 | case X86::BI__builtin_ia32_getexpps512_mask: |
3916 | case X86::BI__builtin_ia32_getexpph512_mask: |
3917 | case X86::BI__builtin_ia32_rcp28pd_mask: |
3918 | case X86::BI__builtin_ia32_rcp28ps_mask: |
3919 | case X86::BI__builtin_ia32_rsqrt28pd_mask: |
3920 | case X86::BI__builtin_ia32_rsqrt28ps_mask: |
3921 | case X86::BI__builtin_ia32_vcomisd: |
3922 | case X86::BI__builtin_ia32_vcomiss: |
3923 | case X86::BI__builtin_ia32_vcomish: |
3924 | case X86::BI__builtin_ia32_vcvtph2ps512_mask: |
3925 | ArgNum = 3; |
3926 | break; |
3927 | case X86::BI__builtin_ia32_cmppd512_mask: |
3928 | case X86::BI__builtin_ia32_cmpps512_mask: |
3929 | case X86::BI__builtin_ia32_cmpsd_mask: |
3930 | case X86::BI__builtin_ia32_cmpss_mask: |
3931 | case X86::BI__builtin_ia32_cmpsh_mask: |
3932 | case X86::BI__builtin_ia32_vcvtsh2sd_round_mask: |
3933 | case X86::BI__builtin_ia32_vcvtsh2ss_round_mask: |
3934 | case X86::BI__builtin_ia32_cvtss2sd_round_mask: |
3935 | case X86::BI__builtin_ia32_getexpsd128_round_mask: |
3936 | case X86::BI__builtin_ia32_getexpss128_round_mask: |
3937 | case X86::BI__builtin_ia32_getexpsh128_round_mask: |
3938 | case X86::BI__builtin_ia32_getmantpd512_mask: |
3939 | case X86::BI__builtin_ia32_getmantps512_mask: |
3940 | case X86::BI__builtin_ia32_getmantph512_mask: |
3941 | case X86::BI__builtin_ia32_maxsd_round_mask: |
3942 | case X86::BI__builtin_ia32_maxss_round_mask: |
3943 | case X86::BI__builtin_ia32_maxsh_round_mask: |
3944 | case X86::BI__builtin_ia32_minsd_round_mask: |
3945 | case X86::BI__builtin_ia32_minss_round_mask: |
3946 | case X86::BI__builtin_ia32_minsh_round_mask: |
3947 | case X86::BI__builtin_ia32_rcp28sd_round_mask: |
3948 | case X86::BI__builtin_ia32_rcp28ss_round_mask: |
3949 | case X86::BI__builtin_ia32_reducepd512_mask: |
3950 | case X86::BI__builtin_ia32_reduceps512_mask: |
3951 | case X86::BI__builtin_ia32_reduceph512_mask: |
3952 | case X86::BI__builtin_ia32_rndscalepd_mask: |
3953 | case X86::BI__builtin_ia32_rndscaleps_mask: |
3954 | case X86::BI__builtin_ia32_rndscaleph_mask: |
3955 | case X86::BI__builtin_ia32_rsqrt28sd_round_mask: |
3956 | case X86::BI__builtin_ia32_rsqrt28ss_round_mask: |
3957 | ArgNum = 4; |
3958 | break; |
3959 | case X86::BI__builtin_ia32_fixupimmpd512_mask: |
3960 | case X86::BI__builtin_ia32_fixupimmpd512_maskz: |
3961 | case X86::BI__builtin_ia32_fixupimmps512_mask: |
3962 | case X86::BI__builtin_ia32_fixupimmps512_maskz: |
3963 | case X86::BI__builtin_ia32_fixupimmsd_mask: |
3964 | case X86::BI__builtin_ia32_fixupimmsd_maskz: |
3965 | case X86::BI__builtin_ia32_fixupimmss_mask: |
3966 | case X86::BI__builtin_ia32_fixupimmss_maskz: |
3967 | case X86::BI__builtin_ia32_getmantsd_round_mask: |
3968 | case X86::BI__builtin_ia32_getmantss_round_mask: |
3969 | case X86::BI__builtin_ia32_getmantsh_round_mask: |
3970 | case X86::BI__builtin_ia32_rangepd512_mask: |
3971 | case X86::BI__builtin_ia32_rangeps512_mask: |
3972 | case X86::BI__builtin_ia32_rangesd128_round_mask: |
3973 | case X86::BI__builtin_ia32_rangess128_round_mask: |
3974 | case X86::BI__builtin_ia32_reducesd_mask: |
3975 | case X86::BI__builtin_ia32_reducess_mask: |
3976 | case X86::BI__builtin_ia32_reducesh_mask: |
3977 | case X86::BI__builtin_ia32_rndscalesd_round_mask: |
3978 | case X86::BI__builtin_ia32_rndscaless_round_mask: |
3979 | case X86::BI__builtin_ia32_rndscalesh_round_mask: |
3980 | ArgNum = 5; |
3981 | break; |
3982 | case X86::BI__builtin_ia32_vcvtsd2si64: |
3983 | case X86::BI__builtin_ia32_vcvtsd2si32: |
3984 | case X86::BI__builtin_ia32_vcvtsd2usi32: |
3985 | case X86::BI__builtin_ia32_vcvtsd2usi64: |
3986 | case X86::BI__builtin_ia32_vcvtss2si32: |
3987 | case X86::BI__builtin_ia32_vcvtss2si64: |
3988 | case X86::BI__builtin_ia32_vcvtss2usi32: |
3989 | case X86::BI__builtin_ia32_vcvtss2usi64: |
3990 | case X86::BI__builtin_ia32_vcvtsh2si32: |
3991 | case X86::BI__builtin_ia32_vcvtsh2si64: |
3992 | case X86::BI__builtin_ia32_vcvtsh2usi32: |
3993 | case X86::BI__builtin_ia32_vcvtsh2usi64: |
3994 | case X86::BI__builtin_ia32_sqrtpd512: |
3995 | case X86::BI__builtin_ia32_sqrtps512: |
3996 | case X86::BI__builtin_ia32_sqrtph512: |
3997 | ArgNum = 1; |
3998 | HasRC = true; |
3999 | break; |
4000 | case X86::BI__builtin_ia32_addph512: |
4001 | case X86::BI__builtin_ia32_divph512: |
4002 | case X86::BI__builtin_ia32_mulph512: |
4003 | case X86::BI__builtin_ia32_subph512: |
4004 | case X86::BI__builtin_ia32_addpd512: |
4005 | case X86::BI__builtin_ia32_addps512: |
4006 | case X86::BI__builtin_ia32_divpd512: |
4007 | case X86::BI__builtin_ia32_divps512: |
4008 | case X86::BI__builtin_ia32_mulpd512: |
4009 | case X86::BI__builtin_ia32_mulps512: |
4010 | case X86::BI__builtin_ia32_subpd512: |
4011 | case X86::BI__builtin_ia32_subps512: |
4012 | case X86::BI__builtin_ia32_cvtsi2sd64: |
4013 | case X86::BI__builtin_ia32_cvtsi2ss32: |
4014 | case X86::BI__builtin_ia32_cvtsi2ss64: |
4015 | case X86::BI__builtin_ia32_cvtusi2sd64: |
4016 | case X86::BI__builtin_ia32_cvtusi2ss32: |
4017 | case X86::BI__builtin_ia32_cvtusi2ss64: |
4018 | case X86::BI__builtin_ia32_vcvtusi2sh: |
4019 | case X86::BI__builtin_ia32_vcvtusi642sh: |
4020 | case X86::BI__builtin_ia32_vcvtsi2sh: |
4021 | case X86::BI__builtin_ia32_vcvtsi642sh: |
4022 | ArgNum = 2; |
4023 | HasRC = true; |
4024 | break; |
4025 | case X86::BI__builtin_ia32_cvtdq2ps512_mask: |
4026 | case X86::BI__builtin_ia32_cvtudq2ps512_mask: |
4027 | case X86::BI__builtin_ia32_vcvtpd2ph512_mask: |
4028 | case X86::BI__builtin_ia32_vcvtps2phx512_mask: |
4029 | case X86::BI__builtin_ia32_cvtpd2ps512_mask: |
4030 | case X86::BI__builtin_ia32_cvtpd2dq512_mask: |
4031 | case X86::BI__builtin_ia32_cvtpd2qq512_mask: |
4032 | case X86::BI__builtin_ia32_cvtpd2udq512_mask: |
4033 | case X86::BI__builtin_ia32_cvtpd2uqq512_mask: |
4034 | case X86::BI__builtin_ia32_cvtps2dq512_mask: |
4035 | case X86::BI__builtin_ia32_cvtps2qq512_mask: |
4036 | case X86::BI__builtin_ia32_cvtps2udq512_mask: |
4037 | case X86::BI__builtin_ia32_cvtps2uqq512_mask: |
4038 | case X86::BI__builtin_ia32_cvtqq2pd512_mask: |
4039 | case X86::BI__builtin_ia32_cvtqq2ps512_mask: |
4040 | case X86::BI__builtin_ia32_cvtuqq2pd512_mask: |
4041 | case X86::BI__builtin_ia32_cvtuqq2ps512_mask: |
4042 | case X86::BI__builtin_ia32_vcvtdq2ph512_mask: |
4043 | case X86::BI__builtin_ia32_vcvtudq2ph512_mask: |
4044 | case X86::BI__builtin_ia32_vcvtw2ph512_mask: |
4045 | case X86::BI__builtin_ia32_vcvtuw2ph512_mask: |
4046 | case X86::BI__builtin_ia32_vcvtph2w512_mask: |
4047 | case X86::BI__builtin_ia32_vcvtph2uw512_mask: |
4048 | case X86::BI__builtin_ia32_vcvtph2dq512_mask: |
4049 | case X86::BI__builtin_ia32_vcvtph2udq512_mask: |
4050 | case X86::BI__builtin_ia32_vcvtph2qq512_mask: |
4051 | case X86::BI__builtin_ia32_vcvtph2uqq512_mask: |
4052 | case X86::BI__builtin_ia32_vcvtqq2ph512_mask: |
4053 | case X86::BI__builtin_ia32_vcvtuqq2ph512_mask: |
4054 | ArgNum = 3; |
4055 | HasRC = true; |
4056 | break; |
4057 | case X86::BI__builtin_ia32_addsh_round_mask: |
4058 | case X86::BI__builtin_ia32_addss_round_mask: |
4059 | case X86::BI__builtin_ia32_addsd_round_mask: |
4060 | case X86::BI__builtin_ia32_divsh_round_mask: |
4061 | case X86::BI__builtin_ia32_divss_round_mask: |
4062 | case X86::BI__builtin_ia32_divsd_round_mask: |
4063 | case X86::BI__builtin_ia32_mulsh_round_mask: |
4064 | case X86::BI__builtin_ia32_mulss_round_mask: |
4065 | case X86::BI__builtin_ia32_mulsd_round_mask: |
4066 | case X86::BI__builtin_ia32_subsh_round_mask: |
4067 | case X86::BI__builtin_ia32_subss_round_mask: |
4068 | case X86::BI__builtin_ia32_subsd_round_mask: |
4069 | case X86::BI__builtin_ia32_scalefph512_mask: |
4070 | case X86::BI__builtin_ia32_scalefpd512_mask: |
4071 | case X86::BI__builtin_ia32_scalefps512_mask: |
4072 | case X86::BI__builtin_ia32_scalefsd_round_mask: |
4073 | case X86::BI__builtin_ia32_scalefss_round_mask: |
4074 | case X86::BI__builtin_ia32_scalefsh_round_mask: |
4075 | case X86::BI__builtin_ia32_cvtsd2ss_round_mask: |
4076 | case X86::BI__builtin_ia32_vcvtss2sh_round_mask: |
4077 | case X86::BI__builtin_ia32_vcvtsd2sh_round_mask: |
4078 | case X86::BI__builtin_ia32_sqrtsd_round_mask: |
4079 | case X86::BI__builtin_ia32_sqrtss_round_mask: |
4080 | case X86::BI__builtin_ia32_sqrtsh_round_mask: |
4081 | case X86::BI__builtin_ia32_vfmaddsd3_mask: |
4082 | case X86::BI__builtin_ia32_vfmaddsd3_maskz: |
4083 | case X86::BI__builtin_ia32_vfmaddsd3_mask3: |
4084 | case X86::BI__builtin_ia32_vfmaddss3_mask: |
4085 | case X86::BI__builtin_ia32_vfmaddss3_maskz: |
4086 | case X86::BI__builtin_ia32_vfmaddss3_mask3: |
4087 | case X86::BI__builtin_ia32_vfmaddsh3_mask: |
4088 | case X86::BI__builtin_ia32_vfmaddsh3_maskz: |
4089 | case X86::BI__builtin_ia32_vfmaddsh3_mask3: |
4090 | case X86::BI__builtin_ia32_vfmaddpd512_mask: |
4091 | case X86::BI__builtin_ia32_vfmaddpd512_maskz: |
4092 | case X86::BI__builtin_ia32_vfmaddpd512_mask3: |
4093 | case X86::BI__builtin_ia32_vfmsubpd512_mask3: |
4094 | case X86::BI__builtin_ia32_vfmaddps512_mask: |
4095 | case X86::BI__builtin_ia32_vfmaddps512_maskz: |
4096 | case X86::BI__builtin_ia32_vfmaddps512_mask3: |
4097 | case X86::BI__builtin_ia32_vfmsubps512_mask3: |
4098 | case X86::BI__builtin_ia32_vfmaddph512_mask: |
4099 | case X86::BI__builtin_ia32_vfmaddph512_maskz: |
4100 | case X86::BI__builtin_ia32_vfmaddph512_mask3: |
4101 | case X86::BI__builtin_ia32_vfmsubph512_mask3: |
4102 | case X86::BI__builtin_ia32_vfmaddsubpd512_mask: |
4103 | case X86::BI__builtin_ia32_vfmaddsubpd512_maskz: |
4104 | case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: |
4105 | case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: |
4106 | case X86::BI__builtin_ia32_vfmaddsubps512_mask: |
4107 | case X86::BI__builtin_ia32_vfmaddsubps512_maskz: |
4108 | case X86::BI__builtin_ia32_vfmaddsubps512_mask3: |
4109 | case X86::BI__builtin_ia32_vfmsubaddps512_mask3: |
4110 | case X86::BI__builtin_ia32_vfmaddsubph512_mask: |
4111 | case X86::BI__builtin_ia32_vfmaddsubph512_maskz: |
4112 | case X86::BI__builtin_ia32_vfmaddsubph512_mask3: |
4113 | case X86::BI__builtin_ia32_vfmsubaddph512_mask3: |
4114 | case X86::BI__builtin_ia32_vfmaddcsh_mask: |
4115 | case X86::BI__builtin_ia32_vfmaddcph512_mask: |
4116 | case X86::BI__builtin_ia32_vfmaddcph512_maskz: |
4117 | case X86::BI__builtin_ia32_vfcmaddcsh_mask: |
4118 | case X86::BI__builtin_ia32_vfcmaddcph512_mask: |
4119 | case X86::BI__builtin_ia32_vfcmaddcph512_maskz: |
4120 | case X86::BI__builtin_ia32_vfmulcsh_mask: |
4121 | case X86::BI__builtin_ia32_vfmulcph512_mask: |
4122 | case X86::BI__builtin_ia32_vfcmulcsh_mask: |
4123 | case X86::BI__builtin_ia32_vfcmulcph512_mask: |
4124 | ArgNum = 4; |
4125 | HasRC = true; |
4126 | break; |
4127 | } |
4128 | |
4129 | llvm::APSInt Result; |
4130 | |
4131 | |
4132 | Expr *Arg = TheCall->getArg(ArgNum); |
4133 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
4134 | return false; |
4135 | |
4136 | |
4137 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
4138 | return true; |
4139 | |
4140 | |
4141 | |
4142 | |
4143 | |
4144 | if (Result == 4 || |
4145 | Result == 8 || |
4146 | (!HasRC && Result == 12) || |
4147 | (HasRC && Result.getZExtValue() >= 8 && Result.getZExtValue() <= 11)) |
4148 | return false; |
4149 | |
4150 | return Diag(TheCall->getBeginLoc(), diag::err_x86_builtin_invalid_rounding) |
4151 | << Arg->getSourceRange(); |
4152 | } |
4153 | |
4154 | |
4155 | bool Sema::CheckX86BuiltinGatherScatterScale(unsigned BuiltinID, |
4156 | CallExpr *TheCall) { |
4157 | unsigned ArgNum = 0; |
4158 | switch (BuiltinID) { |
4159 | default: |
4160 | return false; |
4161 | case X86::BI__builtin_ia32_gatherpfdpd: |
4162 | case X86::BI__builtin_ia32_gatherpfdps: |
4163 | case X86::BI__builtin_ia32_gatherpfqpd: |
4164 | case X86::BI__builtin_ia32_gatherpfqps: |
4165 | case X86::BI__builtin_ia32_scatterpfdpd: |
4166 | case X86::BI__builtin_ia32_scatterpfdps: |
4167 | case X86::BI__builtin_ia32_scatterpfqpd: |
4168 | case X86::BI__builtin_ia32_scatterpfqps: |
4169 | ArgNum = 3; |
4170 | break; |
4171 | case X86::BI__builtin_ia32_gatherd_pd: |
4172 | case X86::BI__builtin_ia32_gatherd_pd256: |
4173 | case X86::BI__builtin_ia32_gatherq_pd: |
4174 | case X86::BI__builtin_ia32_gatherq_pd256: |
4175 | case X86::BI__builtin_ia32_gatherd_ps: |
4176 | case X86::BI__builtin_ia32_gatherd_ps256: |
4177 | case X86::BI__builtin_ia32_gatherq_ps: |
4178 | case X86::BI__builtin_ia32_gatherq_ps256: |
4179 | case X86::BI__builtin_ia32_gatherd_q: |
4180 | case X86::BI__builtin_ia32_gatherd_q256: |
4181 | case X86::BI__builtin_ia32_gatherq_q: |
4182 | case X86::BI__builtin_ia32_gatherq_q256: |
4183 | case X86::BI__builtin_ia32_gatherd_d: |
4184 | case X86::BI__builtin_ia32_gatherd_d256: |
4185 | case X86::BI__builtin_ia32_gatherq_d: |
4186 | case X86::BI__builtin_ia32_gatherq_d256: |
4187 | case X86::BI__builtin_ia32_gather3div2df: |
4188 | case X86::BI__builtin_ia32_gather3div2di: |
4189 | case X86::BI__builtin_ia32_gather3div4df: |
4190 | case X86::BI__builtin_ia32_gather3div4di: |
4191 | case X86::BI__builtin_ia32_gather3div4sf: |
4192 | case X86::BI__builtin_ia32_gather3div4si: |
4193 | case X86::BI__builtin_ia32_gather3div8sf: |
4194 | case X86::BI__builtin_ia32_gather3div8si: |
4195 | case X86::BI__builtin_ia32_gather3siv2df: |
4196 | case X86::BI__builtin_ia32_gather3siv2di: |
4197 | case X86::BI__builtin_ia32_gather3siv4df: |
4198 | case X86::BI__builtin_ia32_gather3siv4di: |
4199 | case X86::BI__builtin_ia32_gather3siv4sf: |
4200 | case X86::BI__builtin_ia32_gather3siv4si: |
4201 | case X86::BI__builtin_ia32_gather3siv8sf: |
4202 | case X86::BI__builtin_ia32_gather3siv8si: |
4203 | case X86::BI__builtin_ia32_gathersiv8df: |
4204 | case X86::BI__builtin_ia32_gathersiv16sf: |
4205 | case X86::BI__builtin_ia32_gatherdiv8df: |
4206 | case X86::BI__builtin_ia32_gatherdiv16sf: |
4207 | case X86::BI__builtin_ia32_gathersiv8di: |
4208 | case X86::BI__builtin_ia32_gathersiv16si: |
4209 | case X86::BI__builtin_ia32_gatherdiv8di: |
4210 | case X86::BI__builtin_ia32_gatherdiv16si: |
4211 | case X86::BI__builtin_ia32_scatterdiv2df: |
4212 | case X86::BI__builtin_ia32_scatterdiv2di: |
4213 | case X86::BI__builtin_ia32_scatterdiv4df: |
4214 | case X86::BI__builtin_ia32_scatterdiv4di: |
4215 | case X86::BI__builtin_ia32_scatterdiv4sf: |
4216 | case X86::BI__builtin_ia32_scatterdiv4si: |
4217 | case X86::BI__builtin_ia32_scatterdiv8sf: |
4218 | case X86::BI__builtin_ia32_scatterdiv8si: |
4219 | case X86::BI__builtin_ia32_scattersiv2df: |
4220 | case X86::BI__builtin_ia32_scattersiv2di: |
4221 | case X86::BI__builtin_ia32_scattersiv4df: |
4222 | case X86::BI__builtin_ia32_scattersiv4di: |
4223 | case X86::BI__builtin_ia32_scattersiv4sf: |
4224 | case X86::BI__builtin_ia32_scattersiv4si: |
4225 | case X86::BI__builtin_ia32_scattersiv8sf: |
4226 | case X86::BI__builtin_ia32_scattersiv8si: |
4227 | case X86::BI__builtin_ia32_scattersiv8df: |
4228 | case X86::BI__builtin_ia32_scattersiv16sf: |
4229 | case X86::BI__builtin_ia32_scatterdiv8df: |
4230 | case X86::BI__builtin_ia32_scatterdiv16sf: |
4231 | case X86::BI__builtin_ia32_scattersiv8di: |
4232 | case X86::BI__builtin_ia32_scattersiv16si: |
4233 | case X86::BI__builtin_ia32_scatterdiv8di: |
4234 | case X86::BI__builtin_ia32_scatterdiv16si: |
4235 | ArgNum = 4; |
4236 | break; |
4237 | } |
4238 | |
4239 | llvm::APSInt Result; |
4240 | |
4241 | |
4242 | Expr *Arg = TheCall->getArg(ArgNum); |
4243 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
4244 | return false; |
4245 | |
4246 | |
4247 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
4248 | return true; |
4249 | |
4250 | if (Result == 1 || Result == 2 || Result == 4 || Result == 8) |
4251 | return false; |
4252 | |
4253 | return Diag(TheCall->getBeginLoc(), diag::err_x86_builtin_invalid_scale) |
4254 | << Arg->getSourceRange(); |
4255 | } |
4256 | |
4257 | enum { TileRegLow = 0, TileRegHigh = 7 }; |
4258 | |
4259 | bool Sema::CheckX86BuiltinTileArgumentsRange(CallExpr *TheCall, |
4260 | ArrayRef<int> ArgNums) { |
4261 | for (int ArgNum : ArgNums) { |
4262 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, TileRegLow, TileRegHigh)) |
4263 | return true; |
4264 | } |
4265 | return false; |
4266 | } |
4267 | |
4268 | bool Sema::CheckX86BuiltinTileDuplicate(CallExpr *TheCall, |
4269 | ArrayRef<int> ArgNums) { |
4270 | |
4271 | |
4272 | std::bitset<TileRegHigh + 1> ArgValues; |
4273 | for (int ArgNum : ArgNums) { |
4274 | Expr *Arg = TheCall->getArg(ArgNum); |
4275 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
4276 | continue; |
4277 | |
4278 | llvm::APSInt Result; |
4279 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
4280 | return true; |
4281 | int ArgExtValue = Result.getExtValue(); |
4282 | assert((ArgExtValue >= TileRegLow || ArgExtValue <= TileRegHigh) && |
4283 | "Incorrect tile register num."); |
4284 | if (ArgValues.test(ArgExtValue)) |
4285 | return Diag(TheCall->getBeginLoc(), |
4286 | diag::err_x86_builtin_tile_arg_duplicate) |
4287 | << TheCall->getArg(ArgNum)->getSourceRange(); |
4288 | ArgValues.set(ArgExtValue); |
4289 | } |
4290 | return false; |
4291 | } |
4292 | |
4293 | bool Sema::CheckX86BuiltinTileRangeAndDuplicate(CallExpr *TheCall, |
4294 | ArrayRef<int> ArgNums) { |
4295 | return CheckX86BuiltinTileArgumentsRange(TheCall, ArgNums) || |
4296 | CheckX86BuiltinTileDuplicate(TheCall, ArgNums); |
4297 | } |
4298 | |
4299 | bool Sema::CheckX86BuiltinTileArguments(unsigned BuiltinID, CallExpr *TheCall) { |
4300 | switch (BuiltinID) { |
4301 | default: |
4302 | return false; |
4303 | case X86::BI__builtin_ia32_tileloadd64: |
4304 | case X86::BI__builtin_ia32_tileloaddt164: |
4305 | case X86::BI__builtin_ia32_tilestored64: |
4306 | case X86::BI__builtin_ia32_tilezero: |
4307 | return CheckX86BuiltinTileArgumentsRange(TheCall, 0); |
4308 | case X86::BI__builtin_ia32_tdpbssd: |
4309 | case X86::BI__builtin_ia32_tdpbsud: |
4310 | case X86::BI__builtin_ia32_tdpbusd: |
4311 | case X86::BI__builtin_ia32_tdpbuud: |
4312 | case X86::BI__builtin_ia32_tdpbf16ps: |
4313 | return CheckX86BuiltinTileRangeAndDuplicate(TheCall, {0, 1, 2}); |
4314 | } |
4315 | } |
4316 | static bool isX86_32Builtin(unsigned BuiltinID) { |
4317 | |
4318 | switch (BuiltinID) { |
4319 | case X86::BI__builtin_ia32_readeflags_u32: |
4320 | case X86::BI__builtin_ia32_writeeflags_u32: |
4321 | return true; |
4322 | } |
4323 | |
4324 | return false; |
4325 | } |
4326 | |
4327 | bool Sema::CheckX86BuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
4328 | CallExpr *TheCall) { |
4329 | if (BuiltinID == X86::BI__builtin_cpu_supports) |
4330 | return SemaBuiltinCpuSupports(*this, TI, TheCall); |
4331 | |
4332 | if (BuiltinID == X86::BI__builtin_cpu_is) |
4333 | return SemaBuiltinCpuIs(*this, TI, TheCall); |
4334 | |
4335 | |
4336 | const llvm::Triple &TT = TI.getTriple(); |
4337 | if (TT.getArch() != llvm::Triple::x86 && isX86_32Builtin(BuiltinID)) |
4338 | return Diag(TheCall->getCallee()->getBeginLoc(), |
4339 | diag::err_32_bit_builtin_64_bit_tgt); |
4340 | |
4341 | |
4342 | if (CheckX86BuiltinRoundingOrSAE(BuiltinID, TheCall)) |
4343 | return true; |
4344 | |
4345 | |
4346 | if (CheckX86BuiltinGatherScatterScale(BuiltinID, TheCall)) |
4347 | return true; |
4348 | |
4349 | |
4350 | if (CheckX86BuiltinTileArguments(BuiltinID, TheCall)) |
4351 | return true; |
4352 | |
4353 | |
4354 | |
4355 | int i = 0, l = 0, u = 0; |
4356 | switch (BuiltinID) { |
4357 | default: |
4358 | return false; |
4359 | case X86::BI__builtin_ia32_vec_ext_v2si: |
4360 | case X86::BI__builtin_ia32_vec_ext_v2di: |
4361 | case X86::BI__builtin_ia32_vextractf128_pd256: |
4362 | case X86::BI__builtin_ia32_vextractf128_ps256: |
4363 | case X86::BI__builtin_ia32_vextractf128_si256: |
4364 | case X86::BI__builtin_ia32_extract128i256: |
4365 | case X86::BI__builtin_ia32_extractf64x4_mask: |
4366 | case X86::BI__builtin_ia32_extracti64x4_mask: |
4367 | case X86::BI__builtin_ia32_extractf32x8_mask: |
4368 | case X86::BI__builtin_ia32_extracti32x8_mask: |
4369 | case X86::BI__builtin_ia32_extractf64x2_256_mask: |
4370 | case X86::BI__builtin_ia32_extracti64x2_256_mask: |
4371 | case X86::BI__builtin_ia32_extractf32x4_256_mask: |
4372 | case X86::BI__builtin_ia32_extracti32x4_256_mask: |
4373 | i = 1; l = 0; u = 1; |
4374 | break; |
4375 | case X86::BI__builtin_ia32_vec_set_v2di: |
4376 | case X86::BI__builtin_ia32_vinsertf128_pd256: |
4377 | case X86::BI__builtin_ia32_vinsertf128_ps256: |
4378 | case X86::BI__builtin_ia32_vinsertf128_si256: |
4379 | case X86::BI__builtin_ia32_insert128i256: |
4380 | case X86::BI__builtin_ia32_insertf32x8: |
4381 | case X86::BI__builtin_ia32_inserti32x8: |
4382 | case X86::BI__builtin_ia32_insertf64x4: |
4383 | case X86::BI__builtin_ia32_inserti64x4: |
4384 | case X86::BI__builtin_ia32_insertf64x2_256: |
4385 | case X86::BI__builtin_ia32_inserti64x2_256: |
4386 | case X86::BI__builtin_ia32_insertf32x4_256: |
4387 | case X86::BI__builtin_ia32_inserti32x4_256: |
4388 | i = 2; l = 0; u = 1; |
4389 | break; |
4390 | case X86::BI__builtin_ia32_vpermilpd: |
4391 | case X86::BI__builtin_ia32_vec_ext_v4hi: |
4392 | case X86::BI__builtin_ia32_vec_ext_v4si: |
4393 | case X86::BI__builtin_ia32_vec_ext_v4sf: |
4394 | case X86::BI__builtin_ia32_vec_ext_v4di: |
4395 | case X86::BI__builtin_ia32_extractf32x4_mask: |
4396 | case X86::BI__builtin_ia32_extracti32x4_mask: |
4397 | case X86::BI__builtin_ia32_extractf64x2_512_mask: |
4398 | case X86::BI__builtin_ia32_extracti64x2_512_mask: |
4399 | i = 1; l = 0; u = 3; |
4400 | break; |
4401 | case X86::BI_mm_prefetch: |
4402 | case X86::BI__builtin_ia32_vec_ext_v8hi: |
4403 | case X86::BI__builtin_ia32_vec_ext_v8si: |
4404 | i = 1; l = 0; u = 7; |
4405 | break; |
4406 | case X86::BI__builtin_ia32_sha1rnds4: |
4407 | case X86::BI__builtin_ia32_blendpd: |
4408 | case X86::BI__builtin_ia32_shufpd: |
4409 | case X86::BI__builtin_ia32_vec_set_v4hi: |
4410 | case X86::BI__builtin_ia32_vec_set_v4si: |
4411 | case X86::BI__builtin_ia32_vec_set_v4di: |
4412 | case X86::BI__builtin_ia32_shuf_f32x4_256: |
4413 | case X86::BI__builtin_ia32_shuf_f64x2_256: |
4414 | case X86::BI__builtin_ia32_shuf_i32x4_256: |
4415 | case X86::BI__builtin_ia32_shuf_i64x2_256: |
4416 | case X86::BI__builtin_ia32_insertf64x2_512: |
4417 | case X86::BI__builtin_ia32_inserti64x2_512: |
4418 | case X86::BI__builtin_ia32_insertf32x4: |
4419 | case X86::BI__builtin_ia32_inserti32x4: |
4420 | i = 2; l = 0; u = 3; |
4421 | break; |
4422 | case X86::BI__builtin_ia32_vpermil2pd: |
4423 | case X86::BI__builtin_ia32_vpermil2pd256: |
4424 | case X86::BI__builtin_ia32_vpermil2ps: |
4425 | case X86::BI__builtin_ia32_vpermil2ps256: |
4426 | i = 3; l = 0; u = 3; |
4427 | break; |
4428 | case X86::BI__builtin_ia32_cmpb128_mask: |
4429 | case X86::BI__builtin_ia32_cmpw128_mask: |
4430 | case X86::BI__builtin_ia32_cmpd128_mask: |
4431 | case X86::BI__builtin_ia32_cmpq128_mask: |
4432 | case X86::BI__builtin_ia32_cmpb256_mask: |
4433 | case X86::BI__builtin_ia32_cmpw256_mask: |
4434 | case X86::BI__builtin_ia32_cmpd256_mask: |
4435 | case X86::BI__builtin_ia32_cmpq256_mask: |
4436 | case X86::BI__builtin_ia32_cmpb512_mask: |
4437 | case X86::BI__builtin_ia32_cmpw512_mask: |
4438 | case X86::BI__builtin_ia32_cmpd512_mask: |
4439 | case X86::BI__builtin_ia32_cmpq512_mask: |
4440 | case X86::BI__builtin_ia32_ucmpb128_mask: |
4441 | case X86::BI__builtin_ia32_ucmpw128_mask: |
4442 | case X86::BI__builtin_ia32_ucmpd128_mask: |
4443 | case X86::BI__builtin_ia32_ucmpq128_mask: |
4444 | case X86::BI__builtin_ia32_ucmpb256_mask: |
4445 | case X86::BI__builtin_ia32_ucmpw256_mask: |
4446 | case X86::BI__builtin_ia32_ucmpd256_mask: |
4447 | case X86::BI__builtin_ia32_ucmpq256_mask: |
4448 | case X86::BI__builtin_ia32_ucmpb512_mask: |
4449 | case X86::BI__builtin_ia32_ucmpw512_mask: |
4450 | case X86::BI__builtin_ia32_ucmpd512_mask: |
4451 | case X86::BI__builtin_ia32_ucmpq512_mask: |
4452 | case X86::BI__builtin_ia32_vpcomub: |
4453 | case X86::BI__builtin_ia32_vpcomuw: |
4454 | case X86::BI__builtin_ia32_vpcomud: |
4455 | case X86::BI__builtin_ia32_vpcomuq: |
4456 | case X86::BI__builtin_ia32_vpcomb: |
4457 | case X86::BI__builtin_ia32_vpcomw: |
4458 | case X86::BI__builtin_ia32_vpcomd: |
4459 | case X86::BI__builtin_ia32_vpcomq: |
4460 | case X86::BI__builtin_ia32_vec_set_v8hi: |
4461 | case X86::BI__builtin_ia32_vec_set_v8si: |
4462 | i = 2; l = 0; u = 7; |
4463 | break; |
4464 | case X86::BI__builtin_ia32_vpermilpd256: |
4465 | case X86::BI__builtin_ia32_roundps: |
4466 | case X86::BI__builtin_ia32_roundpd: |
4467 | case X86::BI__builtin_ia32_roundps256: |
4468 | case X86::BI__builtin_ia32_roundpd256: |
4469 | case X86::BI__builtin_ia32_getmantpd128_mask: |
4470 | case X86::BI__builtin_ia32_getmantpd256_mask: |
4471 | case X86::BI__builtin_ia32_getmantps128_mask: |
4472 | case X86::BI__builtin_ia32_getmantps256_mask: |
4473 | case X86::BI__builtin_ia32_getmantpd512_mask: |
4474 | case X86::BI__builtin_ia32_getmantps512_mask: |
4475 | case X86::BI__builtin_ia32_getmantph128_mask: |
4476 | case X86::BI__builtin_ia32_getmantph256_mask: |
4477 | case X86::BI__builtin_ia32_getmantph512_mask: |
4478 | case X86::BI__builtin_ia32_vec_ext_v16qi: |
4479 | case X86::BI__builtin_ia32_vec_ext_v16hi: |
4480 | i = 1; l = 0; u = 15; |
4481 | break; |
4482 | case X86::BI__builtin_ia32_pblendd128: |
4483 | case X86::BI__builtin_ia32_blendps: |
4484 | case X86::BI__builtin_ia32_blendpd256: |
4485 | case X86::BI__builtin_ia32_shufpd256: |
4486 | case X86::BI__builtin_ia32_roundss: |
4487 | case X86::BI__builtin_ia32_roundsd: |
4488 | case X86::BI__builtin_ia32_rangepd128_mask: |
4489 | case X86::BI__builtin_ia32_rangepd256_mask: |
4490 | case X86::BI__builtin_ia32_rangepd512_mask: |
4491 | case X86::BI__builtin_ia32_rangeps128_mask: |
4492 | case X86::BI__builtin_ia32_rangeps256_mask: |
4493 | case X86::BI__builtin_ia32_rangeps512_mask: |
4494 | case X86::BI__builtin_ia32_getmantsd_round_mask: |
4495 | case X86::BI__builtin_ia32_getmantss_round_mask: |
4496 | case X86::BI__builtin_ia32_getmantsh_round_mask: |
4497 | case X86::BI__builtin_ia32_vec_set_v16qi: |
4498 | case X86::BI__builtin_ia32_vec_set_v16hi: |
4499 | i = 2; l = 0; u = 15; |
4500 | break; |
4501 | case X86::BI__builtin_ia32_vec_ext_v32qi: |
4502 | i = 1; l = 0; u = 31; |
4503 | break; |
4504 | case X86::BI__builtin_ia32_cmpps: |
4505 | case X86::BI__builtin_ia32_cmpss: |
4506 | case X86::BI__builtin_ia32_cmppd: |
4507 | case X86::BI__builtin_ia32_cmpsd: |
4508 | case X86::BI__builtin_ia32_cmpps256: |
4509 | case X86::BI__builtin_ia32_cmppd256: |
4510 | case X86::BI__builtin_ia32_cmpps128_mask: |
4511 | case X86::BI__builtin_ia32_cmppd128_mask: |
4512 | case X86::BI__builtin_ia32_cmpps256_mask: |
4513 | case X86::BI__builtin_ia32_cmppd256_mask: |
4514 | case X86::BI__builtin_ia32_cmpps512_mask: |
4515 | case X86::BI__builtin_ia32_cmppd512_mask: |
4516 | case X86::BI__builtin_ia32_cmpsd_mask: |
4517 | case X86::BI__builtin_ia32_cmpss_mask: |
4518 | case X86::BI__builtin_ia32_vec_set_v32qi: |
4519 | i = 2; l = 0; u = 31; |
4520 | break; |
4521 | case X86::BI__builtin_ia32_permdf256: |
4522 | case X86::BI__builtin_ia32_permdi256: |
4523 | case X86::BI__builtin_ia32_permdf512: |
4524 | case X86::BI__builtin_ia32_permdi512: |
4525 | case X86::BI__builtin_ia32_vpermilps: |
4526 | case X86::BI__builtin_ia32_vpermilps256: |
4527 | case X86::BI__builtin_ia32_vpermilpd512: |
4528 | case X86::BI__builtin_ia32_vpermilps512: |
4529 | case X86::BI__builtin_ia32_pshufd: |
4530 | case X86::BI__builtin_ia32_pshufd256: |
4531 | case X86::BI__builtin_ia32_pshufd512: |
4532 | case X86::BI__builtin_ia32_pshufhw: |
4533 | case X86::BI__builtin_ia32_pshufhw256: |
4534 | case X86::BI__builtin_ia32_pshufhw512: |
4535 | case X86::BI__builtin_ia32_pshuflw: |
4536 | case X86::BI__builtin_ia32_pshuflw256: |
4537 | case X86::BI__builtin_ia32_pshuflw512: |
4538 | case X86::BI__builtin_ia32_vcvtps2ph: |
4539 | case X86::BI__builtin_ia32_vcvtps2ph_mask: |
4540 | case X86::BI__builtin_ia32_vcvtps2ph256: |
4541 | case X86::BI__builtin_ia32_vcvtps2ph256_mask: |
4542 | case X86::BI__builtin_ia32_vcvtps2ph512_mask: |
4543 | case X86::BI__builtin_ia32_rndscaleps_128_mask: |
4544 | case X86::BI__builtin_ia32_rndscalepd_128_mask: |
4545 | case X86::BI__builtin_ia32_rndscaleps_256_mask: |
4546 | case X86::BI__builtin_ia32_rndscalepd_256_mask: |
4547 | case X86::BI__builtin_ia32_rndscaleps_mask: |
4548 | case X86::BI__builtin_ia32_rndscalepd_mask: |
4549 | case X86::BI__builtin_ia32_rndscaleph_mask: |
4550 | case X86::BI__builtin_ia32_reducepd128_mask: |
4551 | case X86::BI__builtin_ia32_reducepd256_mask: |
4552 | case X86::BI__builtin_ia32_reducepd512_mask: |
4553 | case X86::BI__builtin_ia32_reduceps128_mask: |
4554 | case X86::BI__builtin_ia32_reduceps256_mask: |
4555 | case X86::BI__builtin_ia32_reduceps512_mask: |
4556 | case X86::BI__builtin_ia32_reduceph128_mask: |
4557 | case X86::BI__builtin_ia32_reduceph256_mask: |
4558 | case X86::BI__builtin_ia32_reduceph512_mask: |
4559 | case X86::BI__builtin_ia32_prold512: |
4560 | case X86::BI__builtin_ia32_prolq512: |
4561 | case X86::BI__builtin_ia32_prold128: |
4562 | case X86::BI__builtin_ia32_prold256: |
4563 | case X86::BI__builtin_ia32_prolq128: |
4564 | case X86::BI__builtin_ia32_prolq256: |
4565 | case X86::BI__builtin_ia32_prord512: |
4566 | case X86::BI__builtin_ia32_prorq512: |
4567 | case X86::BI__builtin_ia32_prord128: |
4568 | case X86::BI__builtin_ia32_prord256: |
4569 | case X86::BI__builtin_ia32_prorq128: |
4570 | case X86::BI__builtin_ia32_prorq256: |
4571 | case X86::BI__builtin_ia32_fpclasspd128_mask: |
4572 | case X86::BI__builtin_ia32_fpclasspd256_mask: |
4573 | case X86::BI__builtin_ia32_fpclassps128_mask: |
4574 | case X86::BI__builtin_ia32_fpclassps256_mask: |
4575 | case X86::BI__builtin_ia32_fpclassps512_mask: |
4576 | case X86::BI__builtin_ia32_fpclasspd512_mask: |
4577 | case X86::BI__builtin_ia32_fpclassph128_mask: |
4578 | case X86::BI__builtin_ia32_fpclassph256_mask: |
4579 | case X86::BI__builtin_ia32_fpclassph512_mask: |
4580 | case X86::BI__builtin_ia32_fpclasssd_mask: |
4581 | case X86::BI__builtin_ia32_fpclassss_mask: |
4582 | case X86::BI__builtin_ia32_fpclasssh_mask: |
4583 | case X86::BI__builtin_ia32_pslldqi128_byteshift: |
4584 | case X86::BI__builtin_ia32_pslldqi256_byteshift: |
4585 | case X86::BI__builtin_ia32_pslldqi512_byteshift: |
4586 | case X86::BI__builtin_ia32_psrldqi128_byteshift: |
4587 | case X86::BI__builtin_ia32_psrldqi256_byteshift: |
4588 | case X86::BI__builtin_ia32_psrldqi512_byteshift: |
4589 | case X86::BI__builtin_ia32_kshiftliqi: |
4590 | case X86::BI__builtin_ia32_kshiftlihi: |
4591 | case X86::BI__builtin_ia32_kshiftlisi: |
4592 | case X86::BI__builtin_ia32_kshiftlidi: |
4593 | case X86::BI__builtin_ia32_kshiftriqi: |
4594 | case X86::BI__builtin_ia32_kshiftrihi: |
4595 | case X86::BI__builtin_ia32_kshiftrisi: |
4596 | case X86::BI__builtin_ia32_kshiftridi: |
4597 | i = 1; l = 0; u = 255; |
4598 | break; |
4599 | case X86::BI__builtin_ia32_vperm2f128_pd256: |
4600 | case X86::BI__builtin_ia32_vperm2f128_ps256: |
4601 | case X86::BI__builtin_ia32_vperm2f128_si256: |
4602 | case X86::BI__builtin_ia32_permti256: |
4603 | case X86::BI__builtin_ia32_pblendw128: |
4604 | case X86::BI__builtin_ia32_pblendw256: |
4605 | case X86::BI__builtin_ia32_blendps256: |
4606 | case X86::BI__builtin_ia32_pblendd256: |
4607 | case X86::BI__builtin_ia32_palignr128: |
4608 | case X86::BI__builtin_ia32_palignr256: |
4609 | case X86::BI__builtin_ia32_palignr512: |
4610 | case X86::BI__builtin_ia32_alignq512: |
4611 | case X86::BI__builtin_ia32_alignd512: |
4612 | case X86::BI__builtin_ia32_alignd128: |
4613 | case X86::BI__builtin_ia32_alignd256: |
4614 | case X86::BI__builtin_ia32_alignq128: |
4615 | case X86::BI__builtin_ia32_alignq256: |
4616 | case X86::BI__builtin_ia32_vcomisd: |
4617 | case X86::BI__builtin_ia32_vcomiss: |
4618 | case X86::BI__builtin_ia32_shuf_f32x4: |
4619 | case X86::BI__builtin_ia32_shuf_f64x2: |
4620 | case X86::BI__builtin_ia32_shuf_i32x4: |
4621 | case X86::BI__builtin_ia32_shuf_i64x2: |
4622 | case X86::BI__builtin_ia32_shufpd512: |
4623 | case X86::BI__builtin_ia32_shufps: |
4624 | case X86::BI__builtin_ia32_shufps256: |
4625 | case X86::BI__builtin_ia32_shufps512: |
4626 | case X86::BI__builtin_ia32_dbpsadbw128: |
4627 | case X86::BI__builtin_ia32_dbpsadbw256: |
4628 | case X86::BI__builtin_ia32_dbpsadbw512: |
4629 | case X86::BI__builtin_ia32_vpshldd128: |
4630 | case X86::BI__builtin_ia32_vpshldd256: |
4631 | case X86::BI__builtin_ia32_vpshldd512: |
4632 | case X86::BI__builtin_ia32_vpshldq128: |
4633 | case X86::BI__builtin_ia32_vpshldq256: |
4634 | case X86::BI__builtin_ia32_vpshldq512: |
4635 | case X86::BI__builtin_ia32_vpshldw128: |
4636 | case X86::BI__builtin_ia32_vpshldw256: |
4637 | case X86::BI__builtin_ia32_vpshldw512: |
4638 | case X86::BI__builtin_ia32_vpshrdd128: |
4639 | case X86::BI__builtin_ia32_vpshrdd256: |
4640 | case X86::BI__builtin_ia32_vpshrdd512: |
4641 | case X86::BI__builtin_ia32_vpshrdq128: |
4642 | case X86::BI__builtin_ia32_vpshrdq256: |
4643 | case X86::BI__builtin_ia32_vpshrdq512: |
4644 | case X86::BI__builtin_ia32_vpshrdw128: |
4645 | case X86::BI__builtin_ia32_vpshrdw256: |
4646 | case X86::BI__builtin_ia32_vpshrdw512: |
4647 | i = 2; l = 0; u = 255; |
4648 | break; |
4649 | case X86::BI__builtin_ia32_fixupimmpd512_mask: |
4650 | case X86::BI__builtin_ia32_fixupimmpd512_maskz: |
4651 | case X86::BI__builtin_ia32_fixupimmps512_mask: |
4652 | case X86::BI__builtin_ia32_fixupimmps512_maskz: |
4653 | case X86::BI__builtin_ia32_fixupimmsd_mask: |
4654 | case X86::BI__builtin_ia32_fixupimmsd_maskz: |
4655 | case X86::BI__builtin_ia32_fixupimmss_mask: |
4656 | case X86::BI__builtin_ia32_fixupimmss_maskz: |
4657 | case X86::BI__builtin_ia32_fixupimmpd128_mask: |
4658 | case X86::BI__builtin_ia32_fixupimmpd128_maskz: |
4659 | case X86::BI__builtin_ia32_fixupimmpd256_mask: |
4660 | case X86::BI__builtin_ia32_fixupimmpd256_maskz: |
4661 | case X86::BI__builtin_ia32_fixupimmps128_mask: |
4662 | case X86::BI__builtin_ia32_fixupimmps128_maskz: |
4663 | case X86::BI__builtin_ia32_fixupimmps256_mask: |
4664 | case X86::BI__builtin_ia32_fixupimmps256_maskz: |
4665 | case X86::BI__builtin_ia32_pternlogd512_mask: |
4666 | case X86::BI__builtin_ia32_pternlogd512_maskz: |
4667 | case X86::BI__builtin_ia32_pternlogq512_mask: |
4668 | case X86::BI__builtin_ia32_pternlogq512_maskz: |
4669 | case X86::BI__builtin_ia32_pternlogd128_mask: |
4670 | case X86::BI__builtin_ia32_pternlogd128_maskz: |
4671 | case X86::BI__builtin_ia32_pternlogd256_mask: |
4672 | case X86::BI__builtin_ia32_pternlogd256_maskz: |
4673 | case X86::BI__builtin_ia32_pternlogq128_mask: |
4674 | case X86::BI__builtin_ia32_pternlogq128_maskz: |
4675 | case X86::BI__builtin_ia32_pternlogq256_mask: |
4676 | case X86::BI__builtin_ia32_pternlogq256_maskz: |
4677 | i = 3; l = 0; u = 255; |
4678 | break; |
4679 | case X86::BI__builtin_ia32_gatherpfdpd: |
4680 | case X86::BI__builtin_ia32_gatherpfdps: |
4681 | case X86::BI__builtin_ia32_gatherpfqpd: |
4682 | case X86::BI__builtin_ia32_gatherpfqps: |
4683 | case X86::BI__builtin_ia32_scatterpfdpd: |
4684 | case X86::BI__builtin_ia32_scatterpfdps: |
4685 | case X86::BI__builtin_ia32_scatterpfqpd: |
4686 | case X86::BI__builtin_ia32_scatterpfqps: |
4687 | i = 4; l = 2; u = 3; |
4688 | break; |
4689 | case X86::BI__builtin_ia32_reducesd_mask: |
4690 | case X86::BI__builtin_ia32_reducess_mask: |
4691 | case X86::BI__builtin_ia32_rndscalesd_round_mask: |
4692 | case X86::BI__builtin_ia32_rndscaless_round_mask: |
4693 | case X86::BI__builtin_ia32_rndscalesh_round_mask: |
4694 | case X86::BI__builtin_ia32_reducesh_mask: |
4695 | i = 4; l = 0; u = 255; |
4696 | break; |
4697 | } |
4698 | |
4699 | |
4700 | |
4701 | |
4702 | |
4703 | return SemaBuiltinConstantArgRange(TheCall, i, l, u, false); |
4704 | } |
4705 | |
4706 | |
4707 | |
4708 | |
4709 | |
4710 | bool Sema::getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, |
4711 | FormatStringInfo *FSI) { |
4712 | FSI->HasVAListArg = Format->getFirstArg() == 0; |
4713 | FSI->FormatIdx = Format->getFormatIdx() - 1; |
4714 | FSI->FirstDataArg = FSI->HasVAListArg ? 0 : Format->getFirstArg() - 1; |
4715 | |
4716 | |
4717 | |
4718 | |
4719 | if (IsCXXMember) { |
4720 | if(FSI->FormatIdx == 0) |
4721 | return false; |
4722 | --FSI->FormatIdx; |
4723 | if (FSI->FirstDataArg != 0) |
4724 | --FSI->FirstDataArg; |
4725 | } |
4726 | return true; |
4727 | } |
4728 | |
4729 | |
4730 | |
4731 | |
4732 | static bool CheckNonNullExpr(Sema &S, const Expr *Expr) { |
4733 | |
4734 | if (auto nullability |
4735 | = Expr->IgnoreImplicit()->getType()->getNullability(S.Context)) { |
4736 | if (*nullability == NullabilityKind::NonNull) |
4737 | return false; |
4738 | } |
4739 | |
4740 | |
4741 | |
4742 | if (const RecordType *UT = Expr->getType()->getAsUnionType()) { |
4743 | if (UT->getDecl()->hasAttr<TransparentUnionAttr>()) |
4744 | if (const CompoundLiteralExpr *CLE = |
4745 | dyn_cast<CompoundLiteralExpr>(Expr)) |
4746 | if (const InitListExpr *ILE = |
4747 | dyn_cast<InitListExpr>(CLE->getInitializer())) |
4748 | Expr = ILE->getInit(0); |
4749 | } |
4750 | |
4751 | bool Result; |
4752 | return (!Expr->isValueDependent() && |
4753 | Expr->EvaluateAsBooleanCondition(Result, S.Context) && |
4754 | !Result); |
4755 | } |
4756 | |
4757 | static void CheckNonNullArgument(Sema &S, |
4758 | const Expr *ArgExpr, |
4759 | SourceLocation CallSiteLoc) { |
4760 | if (CheckNonNullExpr(S, ArgExpr)) |
4761 | S.DiagRuntimeBehavior(CallSiteLoc, ArgExpr, |
4762 | S.PDiag(diag::warn_null_arg) |
4763 | << ArgExpr->getSourceRange()); |
4764 | } |
4765 | |
4766 | bool Sema::GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx) { |
4767 | FormatStringInfo FSI; |
4768 | if ((GetFormatStringType(Format) == FST_NSString) && |
4769 | getFormatStringInfo(Format, false, &FSI)) { |
4770 | Idx = FSI.FormatIdx; |
4771 | return true; |
4772 | } |
4773 | return false; |
4774 | } |
4775 | |
4776 | |
4777 | |
4778 | static void |
4779 | DiagnoseCStringFormatDirectiveInCFAPI(Sema &S, |
4780 | const NamedDecl *FDecl, |
4781 | Expr **Args, |
4782 | unsigned NumArgs) { |
4783 | unsigned Idx = 0; |
4784 | bool Format = false; |
4785 | ObjCStringFormatFamily SFFamily = FDecl->getObjCFStringFormattingFamily(); |
4786 | if (SFFamily == ObjCStringFormatFamily::SFF_CFString) { |
4787 | Idx = 2; |
4788 | Format = true; |
4789 | } |
4790 | else |
4791 | for (const auto *I : FDecl->specific_attrs<FormatAttr>()) { |
4792 | if (S.GetFormatNSStringIdx(I, Idx)) { |
4793 | Format = true; |
4794 | break; |
4795 | } |
4796 | } |
4797 | if (!Format || NumArgs <= Idx) |
4798 | return; |
4799 | const Expr *FormatExpr = Args[Idx]; |
4800 | if (const CStyleCastExpr *CSCE = dyn_cast<CStyleCastExpr>(FormatExpr)) |
4801 | FormatExpr = CSCE->getSubExpr(); |
4802 | const StringLiteral *FormatString; |
4803 | if (const ObjCStringLiteral *OSL = |
4804 | dyn_cast<ObjCStringLiteral>(FormatExpr->IgnoreParenImpCasts())) |
4805 | FormatString = OSL->getString(); |
4806 | else |
4807 | FormatString = dyn_cast<StringLiteral>(FormatExpr->IgnoreParenImpCasts()); |
4808 | if (!FormatString) |
4809 | return; |
4810 | if (S.FormatStringHasSArg(FormatString)) { |
4811 | S.Diag(FormatExpr->getExprLoc(), diag::warn_objc_cdirective_format_string) |
4812 | << "%s" << 1 << 1; |
4813 | S.Diag(FDecl->getLocation(), diag::note_entity_declared_at) |
4814 | << FDecl->getDeclName(); |
4815 | } |
4816 | } |
4817 | |
4818 | |
4819 | static bool isNonNullType(ASTContext &ctx, QualType type) { |
4820 | if (auto nullability = type->getNullability(ctx)) |
4821 | return *nullability == NullabilityKind::NonNull; |
4822 | |
4823 | return false; |
4824 | } |
4825 | |
4826 | static void CheckNonNullArguments(Sema &S, |
4827 | const NamedDecl *FDecl, |
4828 | const FunctionProtoType *Proto, |
4829 | ArrayRef<const Expr *> Args, |
4830 | SourceLocation CallSiteLoc) { |
4831 | assert((FDecl || Proto) && "Need a function declaration or prototype"); |
4832 | |
4833 | |
4834 | if (S.isConstantEvaluated()) |
4835 | return; |
4836 | |
4837 | llvm::SmallBitVector NonNullArgs; |
4838 | if (FDecl) { |
4839 | |
4840 | for (const auto *NonNull : FDecl->specific_attrs<NonNullAttr>()) { |
4841 | if (!NonNull->args_size()) { |
4842 | |
4843 | for (const auto *Arg : Args) |
4844 | if (S.isValidPointerAttrType(Arg->getType())) |
4845 | CheckNonNullArgument(S, Arg, CallSiteLoc); |
4846 | return; |
4847 | } |
4848 | |
4849 | for (const ParamIdx &Idx : NonNull->args()) { |
4850 | unsigned IdxAST = Idx.getASTIndex(); |
4851 | if (IdxAST >= Args.size()) |
4852 | continue; |
4853 | if (NonNullArgs.empty()) |
4854 | NonNullArgs.resize(Args.size()); |
4855 | NonNullArgs.set(IdxAST); |
4856 | } |
4857 | } |
4858 | } |
4859 | |
4860 | if (FDecl && (isa<FunctionDecl>(FDecl) || isa<ObjCMethodDecl>(FDecl))) { |
4861 | |
4862 | |
4863 | ArrayRef<ParmVarDecl*> parms; |
4864 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(FDecl)) |
4865 | parms = FD->parameters(); |
4866 | else |
4867 | parms = cast<ObjCMethodDecl>(FDecl)->parameters(); |
4868 | |
4869 | unsigned ParamIndex = 0; |
4870 | for (ArrayRef<ParmVarDecl*>::iterator I = parms.begin(), E = parms.end(); |
4871 | I != E; ++I, ++ParamIndex) { |
4872 | const ParmVarDecl *PVD = *I; |
4873 | if (PVD->hasAttr<NonNullAttr>() || |
4874 | isNonNullType(S.Context, PVD->getType())) { |
4875 | if (NonNullArgs.empty()) |
4876 | NonNullArgs.resize(Args.size()); |
4877 | |
4878 | NonNullArgs.set(ParamIndex); |
4879 | } |
4880 | } |
4881 | } else { |
4882 | |
4883 | |
4884 | if (!Proto) { |
4885 | if (const ValueDecl *VD = dyn_cast<ValueDecl>(FDecl)) { |
4886 | QualType type = VD->getType().getNonReferenceType(); |
4887 | if (auto pointerType = type->getAs<PointerType>()) |
4888 | type = pointerType->getPointeeType(); |
4889 | else if (auto blockType = type->getAs<BlockPointerType>()) |
4890 | type = blockType->getPointeeType(); |
4891 | |
4892 | |
4893 | |
4894 | Proto = type->getAs<FunctionProtoType>(); |
4895 | } |
4896 | } |
4897 | |
4898 | |
4899 | |
4900 | if (Proto) { |
4901 | unsigned Index = 0; |
4902 | for (auto paramType : Proto->getParamTypes()) { |
4903 | if (isNonNullType(S.Context, paramType)) { |
4904 | if (NonNullArgs.empty()) |
4905 | NonNullArgs.resize(Args.size()); |
4906 | |
4907 | NonNullArgs.set(Index); |
4908 | } |
4909 | |
4910 | ++Index; |
4911 | } |
4912 | } |
4913 | } |
4914 | |
4915 | |
4916 | for (unsigned ArgIndex = 0, ArgIndexEnd = NonNullArgs.size(); |
4917 | ArgIndex != ArgIndexEnd; ++ArgIndex) { |
4918 | if (NonNullArgs[ArgIndex]) |
4919 | CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc); |
4920 | } |
4921 | } |
4922 | |
4923 | |
4924 | |
4925 | |
4926 | |
4927 | void Sema::CheckArgAlignment(SourceLocation Loc, NamedDecl *FDecl, |
4928 | StringRef ParamName, QualType ArgTy, |
4929 | QualType ParamTy) { |
4930 | |
4931 | |
4932 | if (!ParamTy->isPointerType() && !ParamTy->isReferenceType()) |
4933 | return; |
4934 | |
4935 | |
4936 | |
4937 | |
4938 | if (ParamTy->isPointerType()) |
4939 | ArgTy = ArgTy->getPointeeType(); |
4940 | |
4941 | |
4942 | ParamTy = ParamTy->getPointeeType(); |
4943 | |
4944 | |
4945 | |
4946 | if (ArgTy.isNull() || ParamTy->isIncompleteType() || |
4947 | ArgTy->isIncompleteType() || ParamTy->isUndeducedType() || |
4948 | ArgTy->isUndeducedType()) |
4949 | return; |
4950 | |
4951 | CharUnits ParamAlign = Context.getTypeAlignInChars(ParamTy); |
4952 | CharUnits ArgAlign = Context.getTypeAlignInChars(ArgTy); |
4953 | |
4954 | |
4955 | |
4956 | if (ArgAlign < ParamAlign) |
4957 | Diag(Loc, diag::warn_param_mismatched_alignment) |
4958 | << (int)ArgAlign.getQuantity() << (int)ParamAlign.getQuantity() |
4959 | << ParamName << FDecl; |
4960 | } |
4961 | |
4962 | |
4963 | |
4964 | |
4965 | void Sema::checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto, |
4966 | const Expr *ThisArg, ArrayRef<const Expr *> Args, |
4967 | bool IsMemberFunction, SourceLocation Loc, |
4968 | SourceRange Range, VariadicCallType CallType) { |
4969 | |
4970 | if (CurContext->isDependentContext()) |
4971 | return; |
4972 | |
4973 | |
4974 | llvm::SmallBitVector CheckedVarArgs; |
4975 | if (FDecl) { |
4976 | for (const auto *I : FDecl->specific_attrs<FormatAttr>()) { |
4977 | |
4978 | CheckedVarArgs.resize(Args.size()); |
4979 | |
4980 | CheckFormatArguments(I, Args, IsMemberFunction, CallType, Loc, Range, |
4981 | CheckedVarArgs); |
4982 | } |
4983 | } |
4984 | |
4985 | |
4986 | |
4987 | auto *FD = dyn_cast_or_null<FunctionDecl>(FDecl); |
4988 | if (CallType != VariadicDoesNotApply && |
4989 | (!FD || FD->getBuiltinID() != Builtin::BI__noop)) { |
4990 | unsigned NumParams = Proto ? Proto->getNumParams() |
4991 | : FDecl && isa<FunctionDecl>(FDecl) |
4992 | ? cast<FunctionDecl>(FDecl)->getNumParams() |
4993 | : FDecl && isa<ObjCMethodDecl>(FDecl) |
4994 | ? cast<ObjCMethodDecl>(FDecl)->param_size() |
4995 | : 0; |
4996 | |
4997 | for (unsigned ArgIdx = NumParams; ArgIdx < Args.size(); ++ArgIdx) { |
4998 | |
4999 | if (const Expr *Arg = Args[ArgIdx]) { |
5000 | if (CheckedVarArgs.empty() || !CheckedVarArgs[ArgIdx]) |
5001 | checkVariadicArgument(Arg, CallType); |
5002 | } |
5003 | } |
5004 | } |
5005 | |
5006 | if (FDecl || Proto) { |
5007 | CheckNonNullArguments(*this, FDecl, Proto, Args, Loc); |
5008 | |
5009 | |
5010 | if (FDecl) { |
5011 | for (const auto *I : FDecl->specific_attrs<ArgumentWithTypeTagAttr>()) |
5012 | CheckArgumentWithTypeTag(I, Args, Loc); |
5013 | } |
5014 | } |
5015 | |
5016 | |
5017 | |
5018 | if (!Proto && FDecl) { |
5019 | const auto *FT = FDecl->getFunctionType(); |
5020 | if (isa_and_nonnull<FunctionProtoType>(FT)) |
5021 | Proto = cast<FunctionProtoType>(FDecl->getFunctionType()); |
5022 | } |
5023 | if (Proto) { |
5024 | |
5025 | |
5026 | const auto N = std::min<unsigned>(Proto->getNumParams(), Args.size()); |
5027 | for (unsigned ArgIdx = 0; ArgIdx < N; ++ArgIdx) { |
5028 | |
5029 | if (const Expr *Arg = Args[ArgIdx]) { |
5030 | if (Arg->containsErrors()) |
5031 | continue; |
5032 | |
5033 | QualType ParamTy = Proto->getParamType(ArgIdx); |
5034 | QualType ArgTy = Arg->getType(); |
5035 | CheckArgAlignment(Arg->getExprLoc(), FDecl, std::to_string(ArgIdx + 1), |
5036 | ArgTy, ParamTy); |
5037 | } |
5038 | } |
5039 | } |
5040 | |
5041 | if (FDecl && FDecl->hasAttr<AllocAlignAttr>()) { |
5042 | auto *AA = FDecl->getAttr<AllocAlignAttr>(); |
5043 | const Expr *Arg = Args[AA->getParamIndex().getASTIndex()]; |
5044 | if (!Arg->isValueDependent()) { |
5045 | Expr::EvalResult Align; |
5046 | if (Arg->EvaluateAsInt(Align, Context)) { |
5047 | const llvm::APSInt &I = Align.Val.getInt(); |
5048 | if (!I.isPowerOf2()) |
5049 | Diag(Arg->getExprLoc(), diag::warn_alignment_not_power_of_two) |
5050 | << Arg->getSourceRange(); |
5051 | |
5052 | if (I > Sema::MaximumAlignment) |
5053 | Diag(Arg->getExprLoc(), diag::warn_assume_aligned_too_great) |
5054 | << Arg->getSourceRange() << Sema::MaximumAlignment; |
5055 | } |
5056 | } |
5057 | } |
5058 | |
5059 | if (FD) |
5060 | diagnoseArgDependentDiagnoseIfAttrs(FD, ThisArg, Args, Loc); |
5061 | } |
5062 | |
5063 | |
5064 | |
5065 | void Sema::CheckConstructorCall(FunctionDecl *FDecl, QualType ThisType, |
5066 | ArrayRef<const Expr *> Args, |
5067 | const FunctionProtoType *Proto, |
5068 | SourceLocation Loc) { |
5069 | VariadicCallType CallType = |
5070 | Proto->isVariadic() ? VariadicConstructor : VariadicDoesNotApply; |
5071 | |
5072 | auto *Ctor = cast<CXXConstructorDecl>(FDecl); |
5073 | CheckArgAlignment(Loc, FDecl, "'this'", Context.getPointerType(ThisType), |
5074 | Context.getPointerType(Ctor->getThisObjectType())); |
5075 | |
5076 | checkCall(FDecl, Proto, nullptr, Args, true, |
5077 | Loc, SourceRange(), CallType); |
5078 | } |
5079 | |
5080 | |
5081 | |
5082 | bool Sema::CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, |
5083 | const FunctionProtoType *Proto) { |
5084 | bool IsMemberOperatorCall = isa<CXXOperatorCallExpr>(TheCall) && |
5085 | isa<CXXMethodDecl>(FDecl); |
5086 | bool IsMemberFunction = isa<CXXMemberCallExpr>(TheCall) || |
5087 | IsMemberOperatorCall; |
5088 | VariadicCallType CallType = getVariadicCallType(FDecl, Proto, |
5089 | TheCall->getCallee()); |
5090 | Expr** Args = TheCall->getArgs(); |
5091 | unsigned NumArgs = TheCall->getNumArgs(); |
5092 | |
5093 | Expr *ImplicitThis = nullptr; |
5094 | if (IsMemberOperatorCall) { |
5095 | |
5096 | |
5097 | |
5098 | ImplicitThis = Args[0]; |
5099 | ++Args; |
5100 | --NumArgs; |
5101 | } else if (IsMemberFunction) |
5102 | ImplicitThis = |
5103 | cast<CXXMemberCallExpr>(TheCall)->getImplicitObjectArgument(); |
5104 | |
5105 | if (ImplicitThis) { |
5106 | |
5107 | |
5108 | QualType ThisType = ImplicitThis->getType(); |
5109 | if (!ThisType->isPointerType()) { |
5110 | assert(!ThisType->isReferenceType()); |
5111 | ThisType = Context.getPointerType(ThisType); |
5112 | } |
5113 | |
5114 | QualType ThisTypeFromDecl = |
5115 | Context.getPointerType(cast<CXXMethodDecl>(FDecl)->getThisObjectType()); |
5116 | |
5117 | CheckArgAlignment(TheCall->getRParenLoc(), FDecl, "'this'", ThisType, |
5118 | ThisTypeFromDecl); |
5119 | } |
5120 | |
5121 | checkCall(FDecl, Proto, ImplicitThis, llvm::makeArrayRef(Args, NumArgs), |
5122 | IsMemberFunction, TheCall->getRParenLoc(), |
5123 | TheCall->getCallee()->getSourceRange(), CallType); |
5124 | |
5125 | IdentifierInfo *FnInfo = FDecl->getIdentifier(); |
5126 | |
5127 | |
5128 | if (!FnInfo) |
5129 | return false; |
5130 | |
5131 | CheckTCBEnforcement(TheCall, FDecl); |
5132 | |
5133 | CheckAbsoluteValueFunction(TheCall, FDecl); |
5134 | CheckMaxUnsignedZero(TheCall, FDecl); |
5135 | |
5136 | if (getLangOpts().ObjC) |
5137 | DiagnoseCStringFormatDirectiveInCFAPI(*this, FDecl, Args, NumArgs); |
5138 | |
5139 | unsigned CMId = FDecl->getMemoryFunctionKind(); |
5140 | |
5141 | |
5142 | switch (CMId) { |
5143 | case 0: |
5144 | return false; |
5145 | |
5146 | |
5147 | |
5148 | |
5149 | case Builtin::BIstrncat: |
5150 | CheckStrncatArguments(TheCall, FnInfo); |
5151 | break; |
5152 | case Builtin::BIfree: |
5153 | CheckFreeArguments(TheCall); |
5154 | break; |
5155 | default: |
5156 | CheckMemaccessArguments(TheCall, CMId, FnInfo); |
5157 | } |
5158 | |
5159 | return false; |
5160 | } |
5161 | |
5162 | bool Sema::CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation lbrac, |
5163 | ArrayRef<const Expr *> Args) { |
5164 | VariadicCallType CallType = |
5165 | Method->isVariadic() ? VariadicMethod : VariadicDoesNotApply; |
5166 | |
5167 | checkCall(Method, nullptr, nullptr, Args, |
5168 | false, lbrac, Method->getSourceRange(), |
5169 | CallType); |
5170 | |
5171 | return false; |
5172 | } |
5173 | |
5174 | bool Sema::CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, |
5175 | const FunctionProtoType *Proto) { |
5176 | QualType Ty; |
5177 | if (const auto *V = dyn_cast<VarDecl>(NDecl)) |
5178 | Ty = V->getType().getNonReferenceType(); |
5179 | else if (const auto *F = dyn_cast<FieldDecl>(NDecl)) |
5180 | Ty = F->getType().getNonReferenceType(); |
5181 | else |
5182 | return false; |
5183 | |
5184 | if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType() && |
5185 | !Ty->isFunctionProtoType()) |
5186 | return false; |
5187 | |
5188 | VariadicCallType CallType; |
5189 | if (!Proto || !Proto->isVariadic()) { |
5190 | CallType = VariadicDoesNotApply; |
5191 | } else if (Ty->isBlockPointerType()) { |
5192 | CallType = VariadicBlock; |
5193 | } else { |
5194 | CallType = VariadicFunction; |
5195 | } |
5196 | |
5197 | checkCall(NDecl, Proto, nullptr, |
5198 | llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), |
5199 | false, TheCall->getRParenLoc(), |
5200 | TheCall->getCallee()->getSourceRange(), CallType); |
5201 | |
5202 | return false; |
5203 | } |
5204 | |
5205 | |
5206 | |
5207 | bool Sema::CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto) { |
5208 | VariadicCallType CallType = getVariadicCallType(nullptr, Proto, |
5209 | TheCall->getCallee()); |
5210 | checkCall(nullptr, Proto, nullptr, |
5211 | llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), |
5212 | false, TheCall->getRParenLoc(), |
5213 | TheCall->getCallee()->getSourceRange(), CallType); |
5214 | |
5215 | return false; |
5216 | } |
5217 | |
5218 | static bool isValidOrderingForOp(int64_t Ordering, AtomicExpr::AtomicOp Op) { |
5219 | if (!llvm::isValidAtomicOrderingCABI(Ordering)) |
5220 | return false; |
5221 | |
5222 | auto OrderingCABI = (llvm::AtomicOrderingCABI)Ordering; |
5223 | switch (Op) { |
5224 | case AtomicExpr::AO__c11_atomic_init: |
5225 | case AtomicExpr::AO__opencl_atomic_init: |
5226 | llvm_unreachable("There is no ordering argument for an init"); |
5227 | |
5228 | case AtomicExpr::AO__c11_atomic_load: |
5229 | case AtomicExpr::AO__opencl_atomic_load: |
5230 | case AtomicExpr::AO__atomic_load_n: |
5231 | case AtomicExpr::AO__atomic_load: |
5232 | return OrderingCABI != llvm::AtomicOrderingCABI::release && |
5233 | OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; |
5234 | |
5235 | case AtomicExpr::AO__c11_atomic_store: |
5236 | case AtomicExpr::AO__opencl_atomic_store: |
5237 | case AtomicExpr::AO__atomic_store: |
5238 | case AtomicExpr::AO__atomic_store_n: |
5239 | return OrderingCABI != llvm::AtomicOrderingCABI::consume && |
5240 | OrderingCABI != llvm::AtomicOrderingCABI::acquire && |
5241 | OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; |
5242 | |
5243 | default: |
5244 | return true; |
5245 | } |
5246 | } |
5247 | |
5248 | ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult, |
5249 | AtomicExpr::AtomicOp Op) { |
5250 | CallExpr *TheCall = cast<CallExpr>(TheCallResult.get()); |
5251 | DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
5252 | MultiExprArg Args{TheCall->getArgs(), TheCall->getNumArgs()}; |
5253 | return BuildAtomicExpr({TheCall->getBeginLoc(), TheCall->getEndLoc()}, |
5254 | DRE->getSourceRange(), TheCall->getRParenLoc(), Args, |
5255 | Op); |
5256 | } |
5257 | |
5258 | ExprResult Sema::BuildAtomicExpr(SourceRange CallRange, SourceRange ExprRange, |
5259 | SourceLocation RParenLoc, MultiExprArg Args, |
5260 | AtomicExpr::AtomicOp Op, |
5261 | AtomicArgumentOrder ArgOrder) { |
5262 | |
5263 | |
5264 | |
5265 | enum { |
5266 | |
5267 | Init, |
5268 | |
5269 | |
5270 | Load, |
5271 | |
5272 | |
5273 | LoadCopy, |
5274 | |
5275 | |
5276 | Copy, |
5277 | |
5278 | |
5279 | Arithmetic, |
5280 | |
5281 | |
5282 | Xchg, |
5283 | |
5284 | |
5285 | GNUXchg, |
5286 | |
5287 | |
5288 | C11CmpXchg, |
5289 | |
5290 | |
5291 | GNUCmpXchg |
5292 | } Form = Init; |
5293 | |
5294 | const unsigned NumForm = GNUCmpXchg + 1; |
5295 | const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 3, 4, 5, 6 }; |
5296 | const unsigned NumVals[] = { 1, 0, 1, 1, 1, 1, 2, 2, 3 }; |
5297 | |
5298 | |
5299 | |
5300 | |
5301 | |
5302 | |
5303 | |
5304 | static_assert(sizeof(NumArgs)/sizeof(NumArgs[0]) == NumForm |
5305 | && sizeof(NumVals)/sizeof(NumVals[0]) == NumForm, |
5306 | "need to update code for modified forms"); |
5307 | static_assert(AtomicExpr::AO__c11_atomic_init == 0 && |
5308 | AtomicExpr::AO__c11_atomic_fetch_min + 1 == |
5309 | AtomicExpr::AO__atomic_load, |
5310 | "need to update code for modified C11 atomics"); |
5311 | bool IsOpenCL = Op >= AtomicExpr::AO__opencl_atomic_init && |
5312 | Op <= AtomicExpr::AO__opencl_atomic_fetch_max; |
5313 | bool IsC11 = (Op >= AtomicExpr::AO__c11_atomic_init && |
5314 | Op <= AtomicExpr::AO__c11_atomic_fetch_min) || |
5315 | IsOpenCL; |
5316 | bool IsN = Op == AtomicExpr::AO__atomic_load_n || |
5317 | Op == AtomicExpr::AO__atomic_store_n || |
5318 | Op == AtomicExpr::AO__atomic_exchange_n || |
5319 | Op == AtomicExpr::AO__atomic_compare_exchange_n; |
5320 | bool IsAddSub = false; |
5321 | |
5322 | switch (Op) { |
5323 | case AtomicExpr::AO__c11_atomic_init: |
5324 | case AtomicExpr::AO__opencl_atomic_init: |
5325 | Form = Init; |
5326 | break; |
5327 | |
5328 | case AtomicExpr::AO__c11_atomic_load: |
5329 | case AtomicExpr::AO__opencl_atomic_load: |
5330 | case AtomicExpr::AO__atomic_load_n: |
5331 | Form = Load; |
5332 | break; |
5333 | |
5334 | case AtomicExpr::AO__atomic_load: |
5335 | Form = LoadCopy; |
5336 | break; |
5337 | |
5338 | case AtomicExpr::AO__c11_atomic_store: |
5339 | case AtomicExpr::AO__opencl_atomic_store: |
5340 | case AtomicExpr::AO__atomic_store: |
5341 | case AtomicExpr::AO__atomic_store_n: |
5342 | Form = Copy; |
5343 | break; |
5344 | |
5345 | case AtomicExpr::AO__c11_atomic_fetch_add: |
5346 | case AtomicExpr::AO__c11_atomic_fetch_sub: |
5347 | case AtomicExpr::AO__opencl_atomic_fetch_add: |
5348 | case AtomicExpr::AO__opencl_atomic_fetch_sub: |
5349 | case AtomicExpr::AO__atomic_fetch_add: |
5350 | case AtomicExpr::AO__atomic_fetch_sub: |
5351 | case AtomicExpr::AO__atomic_add_fetch: |
5352 | case AtomicExpr::AO__atomic_sub_fetch: |
5353 | IsAddSub = true; |
5354 | Form = Arithmetic; |
5355 | break; |
5356 | case AtomicExpr::AO__c11_atomic_fetch_and: |
5357 | case AtomicExpr::AO__c11_atomic_fetch_or: |
5358 | case AtomicExpr::AO__c11_atomic_fetch_xor: |
5359 | case AtomicExpr::AO__opencl_atomic_fetch_and: |
5360 | case AtomicExpr::AO__opencl_atomic_fetch_or: |
5361 | case AtomicExpr::AO__opencl_atomic_fetch_xor: |
5362 | case AtomicExpr::AO__atomic_fetch_and: |
5363 | case AtomicExpr::AO__atomic_fetch_or: |
5364 | case AtomicExpr::AO__atomic_fetch_xor: |
5365 | case AtomicExpr::AO__atomic_fetch_nand: |
5366 | case AtomicExpr::AO__atomic_and_fetch: |
5367 | case AtomicExpr::AO__atomic_or_fetch: |
5368 | case AtomicExpr::AO__atomic_xor_fetch: |
5369 | case AtomicExpr::AO__atomic_nand_fetch: |
5370 | Form = Arithmetic; |
5371 | break; |
5372 | case AtomicExpr::AO__c11_atomic_fetch_min: |
5373 | case AtomicExpr::AO__c11_atomic_fetch_max: |
5374 | case AtomicExpr::AO__opencl_atomic_fetch_min: |
5375 | case AtomicExpr::AO__opencl_atomic_fetch_max: |
5376 | case AtomicExpr::AO__atomic_min_fetch: |
5377 | case AtomicExpr::AO__atomic_max_fetch: |
5378 | case AtomicExpr::AO__atomic_fetch_min: |
5379 | case AtomicExpr::AO__atomic_fetch_max: |
5380 | Form = Arithmetic; |
5381 | break; |
5382 | |
5383 | case AtomicExpr::AO__c11_atomic_exchange: |
5384 | case AtomicExpr::AO__opencl_atomic_exchange: |
5385 | case AtomicExpr::AO__atomic_exchange_n: |
5386 | Form = Xchg; |
5387 | break; |
5388 | |
5389 | case AtomicExpr::AO__atomic_exchange: |
5390 | Form = GNUXchg; |
5391 | break; |
5392 | |
5393 | case AtomicExpr::AO__c11_atomic_compare_exchange_strong: |
5394 | case AtomicExpr::AO__c11_atomic_compare_exchange_weak: |
5395 | case AtomicExpr::AO__opencl_atomic_compare_exchange_strong: |
5396 | case AtomicExpr::AO__opencl_atomic_compare_exchange_weak: |
5397 | Form = C11CmpXchg; |
5398 | break; |
5399 | |
5400 | case AtomicExpr::AO__atomic_compare_exchange: |
5401 | case AtomicExpr::AO__atomic_compare_exchange_n: |
5402 | Form = GNUCmpXchg; |
5403 | break; |
5404 | } |
5405 | |
5406 | unsigned AdjustedNumArgs = NumArgs[Form]; |
5407 | if (IsOpenCL && Op != AtomicExpr::AO__opencl_atomic_init) |
5408 | ++AdjustedNumArgs; |
5409 | |
5410 | if (Args.size() < AdjustedNumArgs) { |
5411 | Diag(CallRange.getEnd(), diag::err_typecheck_call_too_few_args) |
5412 | << 0 << AdjustedNumArgs << static_cast<unsigned>(Args.size()) |
5413 | << ExprRange; |
5414 | return ExprError(); |
5415 | } else if (Args.size() > AdjustedNumArgs) { |
5416 | Diag(Args[AdjustedNumArgs]->getBeginLoc(), |
5417 | diag::err_typecheck_call_too_many_args) |
5418 | << 0 << AdjustedNumArgs << static_cast<unsigned>(Args.size()) |
5419 | << ExprRange; |
5420 | return ExprError(); |
5421 | } |
5422 | |
5423 | |
5424 | Expr *Ptr = Args[0]; |
5425 | ExprResult ConvertedPtr = DefaultFunctionArrayLvalueConversion(Ptr); |
5426 | if (ConvertedPtr.isInvalid()) |
5427 | return ExprError(); |
5428 | |
5429 | Ptr = ConvertedPtr.get(); |
5430 | const PointerType *pointerType = Ptr->getType()->getAs<PointerType>(); |
5431 | if (!pointerType) { |
5432 | Diag(ExprRange.getBegin(), diag::err_atomic_builtin_must_be_pointer) |
5433 | << Ptr->getType() << Ptr->getSourceRange(); |
5434 | return ExprError(); |
5435 | } |
5436 | |
5437 | |
5438 | QualType AtomTy = pointerType->getPointeeType(); |
5439 | QualType ValType = AtomTy; |
5440 | if (IsC11) { |
5441 | if (!AtomTy->isAtomicType()) { |
5442 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic) |
5443 | << Ptr->getType() << Ptr->getSourceRange(); |
5444 | return ExprError(); |
5445 | } |
5446 | if ((Form != Load && Form != LoadCopy && AtomTy.isConstQualified()) || |
5447 | AtomTy.getAddressSpace() == LangAS::opencl_constant) { |
5448 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_non_const_atomic) |
5449 | << (AtomTy.isConstQualified() ? 0 : 1) << Ptr->getType() |
5450 | << Ptr->getSourceRange(); |
5451 | return ExprError(); |
5452 | } |
5453 | ValType = AtomTy->castAs<AtomicType>()->getValueType(); |
5454 | } else if (Form != Load && Form != LoadCopy) { |
5455 | if (ValType.isConstQualified()) { |
5456 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_non_const_pointer) |
5457 | << Ptr->getType() << Ptr->getSourceRange(); |
5458 | return ExprError(); |
5459 | } |
5460 | } |
5461 | |
5462 | |
5463 | if (Form == Arithmetic) { |
5464 | |
5465 | |
5466 | auto IsAllowedValueType = [&](QualType ValType) { |
5467 | if (ValType->isIntegerType()) |
5468 | return true; |
5469 | if (ValType->isPointerType()) |
5470 | return true; |
5471 | if (!ValType->isFloatingType()) |
5472 | return false; |
5473 | |
5474 | if (ValType->isSpecificBuiltinType(BuiltinType::LongDouble) && |
5475 | &Context.getTargetInfo().getLongDoubleFormat() == |
5476 | &llvm::APFloat::x87DoubleExtended()) |
5477 | return false; |
5478 | return true; |
5479 | }; |
5480 | if (IsAddSub && !IsAllowedValueType(ValType)) { |
5481 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic_int_ptr_or_fp) |
5482 | << IsC11 << Ptr->getType() << Ptr->getSourceRange(); |
5483 | return ExprError(); |
5484 | } |
5485 | if (!IsAddSub && !ValType->isIntegerType()) { |
5486 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic_int) |
5487 | << IsC11 << Ptr->getType() << Ptr->getSourceRange(); |
5488 | return ExprError(); |
5489 | } |
5490 | if (IsC11 && ValType->isPointerType() && |
5491 | RequireCompleteType(Ptr->getBeginLoc(), ValType->getPointeeType(), |
5492 | diag::err_incomplete_type)) { |
5493 | return ExprError(); |
5494 | } |
5495 | } else if (IsN && !ValType->isIntegerType() && !ValType->isPointerType()) { |
5496 | |
5497 | |
5498 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic_int_or_ptr) |
5499 | << IsC11 << Ptr->getType() << Ptr->getSourceRange(); |
5500 | return ExprError(); |
5501 | } |
5502 | |
5503 | if (!IsC11 && !AtomTy.isTriviallyCopyableType(Context) && |
5504 | !AtomTy->isScalarType()) { |
5505 | |
5506 | |
5507 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_trivial_copy) |
5508 | << Ptr->getType() << Ptr->getSourceRange(); |
5509 | return ExprError(); |
5510 | } |
5511 | |
5512 | switch (ValType.getObjCLifetime()) { |
5513 | case Qualifiers::OCL_None: |
5514 | case Qualifiers::OCL_ExplicitNone: |
5515 | |
5516 | break; |
5517 | |
5518 | case Qualifiers::OCL_Weak: |
5519 | case Qualifiers::OCL_Strong: |
5520 | case Qualifiers::OCL_Autoreleasing: |
5521 | |
5522 | |
5523 | Diag(ExprRange.getBegin(), diag::err_arc_atomic_ownership) |
5524 | << ValType << Ptr->getSourceRange(); |
5525 | return ExprError(); |
5526 | } |
5527 | |
5528 | |
5529 | |
5530 | |
5531 | |
5532 | ValType.removeLocalVolatile(); |
5533 | ValType.removeLocalConst(); |
5534 | QualType ResultType = ValType; |
5535 | if (Form == Copy || Form == LoadCopy || Form == GNUXchg || |
5536 | Form == Init) |
5537 | ResultType = Context.VoidTy; |
5538 | else if (Form == C11CmpXchg || Form == GNUCmpXchg) |
5539 | ResultType = Context.BoolTy; |
5540 | |
5541 | |
5542 | |
5543 | QualType ByValType = ValType; |
5544 | bool IsPassedByAddress = false; |
5545 | if (!IsC11 && !IsN) { |
5546 | ByValType = Ptr->getType(); |
5547 | IsPassedByAddress = true; |
5548 | } |
5549 | |
5550 | SmallVector<Expr *, 5> APIOrderedArgs; |
5551 | if (ArgOrder == Sema::AtomicArgumentOrder::AST) { |
5552 | APIOrderedArgs.push_back(Args[0]); |
5553 | switch (Form) { |
5554 | case Init: |
5555 | case Load: |
5556 | APIOrderedArgs.push_back(Args[1]); |
5557 | break; |
5558 | case LoadCopy: |
5559 | case Copy: |
5560 | case Arithmetic: |
5561 | case Xchg: |
5562 | APIOrderedArgs.push_back(Args[2]); |
5563 | APIOrderedArgs.push_back(Args[1]); |
5564 | break; |
5565 | case GNUXchg: |
5566 | APIOrderedArgs.push_back(Args[2]); |
5567 | APIOrderedArgs.push_back(Args[3]); |
5568 | APIOrderedArgs.push_back(Args[1]); |
5569 | break; |
5570 | case C11CmpXchg: |
5571 | APIOrderedArgs.push_back(Args[2]); |
5572 | APIOrderedArgs.push_back(Args[4]); |
5573 | APIOrderedArgs.push_back(Args[1]); |
5574 | APIOrderedArgs.push_back(Args[3]); |
5575 | break; |
5576 | case GNUCmpXchg: |
5577 | APIOrderedArgs.push_back(Args[2]); |
5578 | APIOrderedArgs.push_back(Args[4]); |
5579 | APIOrderedArgs.push_back(Args[5]); |
5580 | APIOrderedArgs.push_back(Args[1]); |
5581 | APIOrderedArgs.push_back(Args[3]); |
5582 | break; |
5583 | } |
5584 | } else |
5585 | APIOrderedArgs.append(Args.begin(), Args.end()); |
5586 | |
5587 | |
5588 | |
5589 | |
5590 | |
5591 | |
5592 | for (unsigned i = 0; i != APIOrderedArgs.size(); ++i) { |
5593 | QualType Ty; |
5594 | if (i < NumVals[Form] + 1) { |
5595 | switch (i) { |
5596 | case 0: |
5597 | |
5598 | |
5599 | CheckNonNullArgument(*this, APIOrderedArgs[i], ExprRange.getBegin()); |
5600 | |
5601 | continue; |
5602 | case 1: |
5603 | |
5604 | |
5605 | |
5606 | |
5607 | assert(Form != Load); |
5608 | if (Form == Arithmetic && ValType->isPointerType()) |
5609 | Ty = Context.getPointerDiffType(); |
5610 | else if (Form == Init || Form == Arithmetic) |
5611 | Ty = ValType; |
5612 | else if (Form == Copy || Form == Xchg) { |
5613 | if (IsPassedByAddress) { |
5614 | |
5615 | CheckNonNullArgument(*this, APIOrderedArgs[i], |
5616 | ExprRange.getBegin()); |
5617 | } |
5618 | Ty = ByValType; |
5619 | } else { |
5620 | Expr *ValArg = APIOrderedArgs[i]; |
5621 | |
5622 | CheckNonNullArgument(*this, ValArg, ExprRange.getBegin()); |
5623 | LangAS AS = LangAS::Default; |
5624 | |
5625 | if (const PointerType *PtrTy = |
5626 | ValArg->getType()->getAs<PointerType>()) { |
5627 | AS = PtrTy->getPointeeType().getAddressSpace(); |
5628 | } |
5629 | Ty = Context.getPointerType( |
5630 | Context.getAddrSpaceQualType(ValType.getUnqualifiedType(), AS)); |
5631 | } |
5632 | break; |
5633 | case 2: |
5634 | |
5635 | |
5636 | if (IsPassedByAddress) |
5637 | CheckNonNullArgument(*this, APIOrderedArgs[i], ExprRange.getBegin()); |
5638 | Ty = ByValType; |
5639 | break; |
5640 | case 3: |
5641 | |
5642 | Ty = Context.BoolTy; |
5643 | break; |
5644 | } |
5645 | } else { |
5646 | |
5647 | Ty = Context.IntTy; |
5648 | } |
5649 | |
5650 | InitializedEntity Entity = |
5651 | InitializedEntity::InitializeParameter(Context, Ty, false); |
5652 | ExprResult Arg = APIOrderedArgs[i]; |
5653 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
5654 | if (Arg.isInvalid()) |
5655 | return true; |
5656 | APIOrderedArgs[i] = Arg.get(); |
5657 | } |
5658 | |
5659 | |
5660 | SmallVector<Expr*, 5> SubExprs; |
5661 | SubExprs.push_back(Ptr); |
5662 | switch (Form) { |
5663 | case Init: |
5664 | |
5665 | SubExprs.push_back(APIOrderedArgs[1]); |
5666 | break; |
5667 | case Load: |
5668 | SubExprs.push_back(APIOrderedArgs[1]); |
5669 | break; |
5670 | case LoadCopy: |
5671 | case Copy: |
5672 | case Arithmetic: |
5673 | case Xchg: |
5674 | SubExprs.push_back(APIOrderedArgs[2]); |
5675 | SubExprs.push_back(APIOrderedArgs[1]); |
5676 | break; |
5677 | case GNUXchg: |
5678 | |
5679 | SubExprs.push_back(APIOrderedArgs[3]); |
5680 | SubExprs.push_back(APIOrderedArgs[1]); |
5681 | SubExprs.push_back(APIOrderedArgs[2]); |
5682 | break; |
5683 | case C11CmpXchg: |
5684 | SubExprs.push_back(APIOrderedArgs[3]); |
5685 | SubExprs.push_back(APIOrderedArgs[1]); |
5686 | SubExprs.push_back(APIOrderedArgs[4]); |
5687 | SubExprs.push_back(APIOrderedArgs[2]); |
5688 | break; |
5689 | case GNUCmpXchg: |
5690 | SubExprs.push_back(APIOrderedArgs[4]); |
5691 | SubExprs.push_back(APIOrderedArgs[1]); |
5692 | SubExprs.push_back(APIOrderedArgs[5]); |
5693 | SubExprs.push_back(APIOrderedArgs[2]); |
5694 | SubExprs.push_back(APIOrderedArgs[3]); |
5695 | break; |
5696 | } |
5697 | |
5698 | if (SubExprs.size() >= 2 && Form != Init) { |
5699 | if (Optional<llvm::APSInt> Result = |
5700 | SubExprs[1]->getIntegerConstantExpr(Context)) |
5701 | if (!isValidOrderingForOp(Result->getSExtValue(), Op)) |
5702 | Diag(SubExprs[1]->getBeginLoc(), |
5703 | diag::warn_atomic_op_has_invalid_memory_order) |
5704 | << SubExprs[1]->getSourceRange(); |
5705 | } |
5706 | |
5707 | if (auto ScopeModel = AtomicExpr::getScopeModel(Op)) { |
5708 | auto *Scope = Args[Args.size() - 1]; |
5709 | if (Optional<llvm::APSInt> Result = |
5710 | Scope->getIntegerConstantExpr(Context)) { |
5711 | if (!ScopeModel->isValid(Result->getZExtValue())) |
5712 | Diag(Scope->getBeginLoc(), diag::err_atomic_op_has_invalid_synch_scope) |
5713 | << Scope->getSourceRange(); |
5714 | } |
5715 | SubExprs.push_back(Scope); |
5716 | } |
5717 | |
5718 | AtomicExpr *AE = new (Context) |
5719 | AtomicExpr(ExprRange.getBegin(), SubExprs, ResultType, Op, RParenLoc); |
5720 | |
5721 | if ((Op == AtomicExpr::AO__c11_atomic_load || |
5722 | Op == AtomicExpr::AO__c11_atomic_store || |
5723 | Op == AtomicExpr::AO__opencl_atomic_load || |
5724 | Op == AtomicExpr::AO__opencl_atomic_store ) && |
5725 | Context.AtomicUsesUnsupportedLibcall(AE)) |
5726 | Diag(AE->getBeginLoc(), diag::err_atomic_load_store_uses_lib) |
5727 | << ((Op == AtomicExpr::AO__c11_atomic_load || |
5728 | Op == AtomicExpr::AO__opencl_atomic_load) |
5729 | ? 0 |
5730 | : 1); |
5731 | |
5732 | if (ValType->isExtIntType()) { |
5733 | Diag(Ptr->getExprLoc(), diag::err_atomic_builtin_ext_int_prohibit); |
5734 | return ExprError(); |
5735 | } |
5736 | |
5737 | return AE; |
5738 | } |
5739 | |
5740 | |
5741 | |
5742 | |
5743 | |
5744 | |
5745 | |
5746 | |
5747 | static bool checkBuiltinArgument(Sema &S, CallExpr *E, unsigned ArgIndex) { |
5748 | FunctionDecl *Fn = E->getDirectCallee(); |
5749 | assert(Fn && "builtin call without direct callee!"); |
5750 | |
5751 | ParmVarDecl *Param = Fn->getParamDecl(ArgIndex); |
5752 | InitializedEntity Entity = |
5753 | InitializedEntity::InitializeParameter(S.Context, Param); |
5754 | |
5755 | ExprResult Arg = E->getArg(0); |
5756 | Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); |
5757 | if (Arg.isInvalid()) |
5758 | return true; |
5759 | |
5760 | E->setArg(ArgIndex, Arg.get()); |
5761 | return false; |
5762 | } |
5763 | |
5764 | |
5765 | |
5766 | |
5767 | |
5768 | |
5769 | |
5770 | |
5771 | ExprResult |
5772 | Sema::SemaBuiltinAtomicOverloaded(ExprResult TheCallResult) { |
5773 | CallExpr *TheCall = static_cast<CallExpr *>(TheCallResult.get()); |
5774 | Expr *Callee = TheCall->getCallee(); |
5775 | DeclRefExpr *DRE = cast<DeclRefExpr>(Callee->IgnoreParenCasts()); |
5776 | FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl()); |
5777 | |
5778 | |
5779 | if (TheCall->getNumArgs() < 1) { |
5780 | Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least) |
5781 | << 0 << 1 << TheCall->getNumArgs() << Callee->getSourceRange(); |
5782 | return ExprError(); |
5783 | } |
5784 | |
5785 | |
5786 | |
5787 | |
5788 | |
5789 | |
5790 | Expr *FirstArg = TheCall->getArg(0); |
5791 | ExprResult FirstArgResult = DefaultFunctionArrayLvalueConversion(FirstArg); |
5792 | if (FirstArgResult.isInvalid()) |
5793 | return ExprError(); |
5794 | FirstArg = FirstArgResult.get(); |
5795 | TheCall->setArg(0, FirstArg); |
5796 | |
5797 | const PointerType *pointerType = FirstArg->getType()->getAs<PointerType>(); |
5798 | if (!pointerType) { |
5799 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer) |
5800 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5801 | return ExprError(); |
5802 | } |
5803 | |
5804 | QualType ValType = pointerType->getPointeeType(); |
5805 | if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && |
5806 | !ValType->isBlockPointerType()) { |
5807 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer_intptr) |
5808 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5809 | return ExprError(); |
5810 | } |
5811 | |
5812 | if (ValType.isConstQualified()) { |
5813 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_cannot_be_const) |
5814 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5815 | return ExprError(); |
5816 | } |
5817 | |
5818 | switch (ValType.getObjCLifetime()) { |
5819 | case Qualifiers::OCL_None: |
5820 | case Qualifiers::OCL_ExplicitNone: |
5821 | |
5822 | break; |
5823 | |
5824 | case Qualifiers::OCL_Weak: |
5825 | case Qualifiers::OCL_Strong: |
5826 | case Qualifiers::OCL_Autoreleasing: |
5827 | Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership) |
5828 | << ValType << FirstArg->getSourceRange(); |
5829 | return ExprError(); |
5830 | } |
5831 | |
5832 | |
5833 | ValType = ValType.getUnqualifiedType(); |
5834 | |
5835 | |
5836 | |
5837 | QualType ResultType = ValType; |
5838 | |
5839 | |
5840 | |
5841 | |
5842 | #define BUILTIN_ROW(x) \ |
5843 | { Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \ |
5844 | Builtin::BI##x##_8, Builtin::BI##x##_16 } |
5845 | |
5846 | static const unsigned BuiltinIndices[][5] = { |
5847 | BUILTIN_ROW(__sync_fetch_and_add), |
5848 | BUILTIN_ROW(__sync_fetch_and_sub), |
5849 | BUILTIN_ROW(__sync_fetch_and_or), |
5850 | BUILTIN_ROW(__sync_fetch_and_and), |
5851 | BUILTIN_ROW(__sync_fetch_and_xor), |
5852 | BUILTIN_ROW(__sync_fetch_and_nand), |
5853 | |
5854 | BUILTIN_ROW(__sync_add_and_fetch), |
5855 | BUILTIN_ROW(__sync_sub_and_fetch), |
5856 | BUILTIN_ROW(__sync_and_and_fetch), |
5857 | BUILTIN_ROW(__sync_or_and_fetch), |
5858 | BUILTIN_ROW(__sync_xor_and_fetch), |
5859 | BUILTIN_ROW(__sync_nand_and_fetch), |
5860 | |
5861 | BUILTIN_ROW(__sync_val_compare_and_swap), |
5862 | BUILTIN_ROW(__sync_bool_compare_and_swap), |
5863 | BUILTIN_ROW(__sync_lock_test_and_set), |
5864 | BUILTIN_ROW(__sync_lock_release), |
5865 | BUILTIN_ROW(__sync_swap) |
5866 | }; |
5867 | #undef BUILTIN_ROW |
5868 | |
5869 | |
5870 | unsigned SizeIndex; |
5871 | switch (Context.getTypeSizeInChars(ValType).getQuantity()) { |
5872 | case 1: SizeIndex = 0; break; |
5873 | case 2: SizeIndex = 1; break; |
5874 | case 4: SizeIndex = 2; break; |
5875 | case 8: SizeIndex = 3; break; |
5876 | case 16: SizeIndex = 4; break; |
5877 | default: |
5878 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_pointer_size) |
5879 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5880 | return ExprError(); |
5881 | } |
5882 | |
5883 | |
5884 | |
5885 | |
5886 | |
5887 | unsigned BuiltinID = FDecl->getBuiltinID(); |
5888 | unsigned BuiltinIndex, NumFixed = 1; |
5889 | bool WarnAboutSemanticsChange = false; |
5890 | switch (BuiltinID) { |
5891 | default: llvm_unreachable("Unknown overloaded atomic builtin!"); |
5892 | case Builtin::BI__sync_fetch_and_add: |
5893 | case Builtin::BI__sync_fetch_and_add_1: |
5894 | case Builtin::BI__sync_fetch_and_add_2: |
5895 | case Builtin::BI__sync_fetch_and_add_4: |
5896 | case Builtin::BI__sync_fetch_and_add_8: |
5897 | case Builtin::BI__sync_fetch_and_add_16: |
5898 | BuiltinIndex = 0; |
5899 | break; |
5900 | |
5901 | case Builtin::BI__sync_fetch_and_sub: |
5902 | case Builtin::BI__sync_fetch_and_sub_1: |
5903 | case Builtin::BI__sync_fetch_and_sub_2: |
5904 | case Builtin::BI__sync_fetch_and_sub_4: |
5905 | case Builtin::BI__sync_fetch_and_sub_8: |
5906 | case Builtin::BI__sync_fetch_and_sub_16: |
5907 | BuiltinIndex = 1; |
5908 | break; |
5909 | |
5910 | case Builtin::BI__sync_fetch_and_or: |
5911 | case Builtin::BI__sync_fetch_and_or_1: |
5912 | case Builtin::BI__sync_fetch_and_or_2: |
5913 | case Builtin::BI__sync_fetch_and_or_4: |
5914 | case Builtin::BI__sync_fetch_and_or_8: |
5915 | case Builtin::BI__sync_fetch_and_or_16: |
5916 | BuiltinIndex = 2; |
5917 | break; |
5918 | |
5919 | case Builtin::BI__sync_fetch_and_and: |
5920 | case Builtin::BI__sync_fetch_and_and_1: |
5921 | case Builtin::BI__sync_fetch_and_and_2: |
5922 | case Builtin::BI__sync_fetch_and_and_4: |
5923 | case Builtin::BI__sync_fetch_and_and_8: |
5924 | case Builtin::BI__sync_fetch_and_and_16: |
5925 | BuiltinIndex = 3; |
5926 | break; |
5927 | |
5928 | case Builtin::BI__sync_fetch_and_xor: |
5929 | case Builtin::BI__sync_fetch_and_xor_1: |
5930 | case Builtin::BI__sync_fetch_and_xor_2: |
5931 | case Builtin::BI__sync_fetch_and_xor_4: |
5932 | case Builtin::BI__sync_fetch_and_xor_8: |
5933 | case Builtin::BI__sync_fetch_and_xor_16: |
5934 | BuiltinIndex = 4; |
5935 | break; |
5936 | |
5937 | case Builtin::BI__sync_fetch_and_nand: |
5938 | case Builtin::BI__sync_fetch_and_nand_1: |
5939 | case Builtin::BI__sync_fetch_and_nand_2: |
5940 | case Builtin::BI__sync_fetch_and_nand_4: |
5941 | case Builtin::BI__sync_fetch_and_nand_8: |
5942 | case Builtin::BI__sync_fetch_and_nand_16: |
5943 | BuiltinIndex = 5; |
5944 | WarnAboutSemanticsChange = true; |
5945 | break; |
5946 | |
5947 | case Builtin::BI__sync_add_and_fetch: |
5948 | case Builtin::BI__sync_add_and_fetch_1: |
5949 | case Builtin::BI__sync_add_and_fetch_2: |
5950 | case Builtin::BI__sync_add_and_fetch_4: |
5951 | case Builtin::BI__sync_add_and_fetch_8: |
5952 | case Builtin::BI__sync_add_and_fetch_16: |
5953 | BuiltinIndex = 6; |
5954 | break; |
5955 | |
5956 | case Builtin::BI__sync_sub_and_fetch: |
5957 | case Builtin::BI__sync_sub_and_fetch_1: |
5958 | case Builtin::BI__sync_sub_and_fetch_2: |
5959 | case Builtin::BI__sync_sub_and_fetch_4: |
5960 | case Builtin::BI__sync_sub_and_fetch_8: |
5961 | case Builtin::BI__sync_sub_and_fetch_16: |
5962 | BuiltinIndex = 7; |
5963 | break; |
5964 | |
5965 | case Builtin::BI__sync_and_and_fetch: |
5966 | case Builtin::BI__sync_and_and_fetch_1: |
5967 | case Builtin::BI__sync_and_and_fetch_2: |
5968 | case Builtin::BI__sync_and_and_fetch_4: |
5969 | case Builtin::BI__sync_and_and_fetch_8: |
5970 | case Builtin::BI__sync_and_and_fetch_16: |
5971 | BuiltinIndex = 8; |
5972 | break; |
5973 | |
5974 | case Builtin::BI__sync_or_and_fetch: |
5975 | case Builtin::BI__sync_or_and_fetch_1: |
5976 | case Builtin::BI__sync_or_and_fetch_2: |
5977 | case Builtin::BI__sync_or_and_fetch_4: |
5978 | case Builtin::BI__sync_or_and_fetch_8: |
5979 | case Builtin::BI__sync_or_and_fetch_16: |
5980 | BuiltinIndex = 9; |
5981 | break; |
5982 | |
5983 | case Builtin::BI__sync_xor_and_fetch: |
5984 | case Builtin::BI__sync_xor_and_fetch_1: |
5985 | case Builtin::BI__sync_xor_and_fetch_2: |
5986 | case Builtin::BI__sync_xor_and_fetch_4: |
5987 | case Builtin::BI__sync_xor_and_fetch_8: |
5988 | case Builtin::BI__sync_xor_and_fetch_16: |
5989 | BuiltinIndex = 10; |
5990 | break; |
5991 | |
5992 | case Builtin::BI__sync_nand_and_fetch: |
5993 | case Builtin::BI__sync_nand_and_fetch_1: |
5994 | case Builtin::BI__sync_nand_and_fetch_2: |
5995 | case Builtin::BI__sync_nand_and_fetch_4: |
5996 | case Builtin::BI__sync_nand_and_fetch_8: |
5997 | case Builtin::BI__sync_nand_and_fetch_16: |
5998 | BuiltinIndex = 11; |
5999 | WarnAboutSemanticsChange = true; |
6000 | break; |
6001 | |
6002 | case Builtin::BI__sync_val_compare_and_swap: |
6003 | case Builtin::BI__sync_val_compare_and_swap_1: |
6004 | case Builtin::BI__sync_val_compare_and_swap_2: |
6005 | case Builtin::BI__sync_val_compare_and_swap_4: |
6006 | case Builtin::BI__sync_val_compare_and_swap_8: |
6007 | case Builtin::BI__sync_val_compare_and_swap_16: |
6008 | BuiltinIndex = 12; |
6009 | NumFixed = 2; |
6010 | break; |
6011 | |
6012 | case Builtin::BI__sync_bool_compare_and_swap: |
6013 | case Builtin::BI__sync_bool_compare_and_swap_1: |
6014 | case Builtin::BI__sync_bool_compare_and_swap_2: |
6015 | case Builtin::BI__sync_bool_compare_and_swap_4: |
6016 | case Builtin::BI__sync_bool_compare_and_swap_8: |
6017 | case Builtin::BI__sync_bool_compare_and_swap_16: |
6018 | BuiltinIndex = 13; |
6019 | NumFixed = 2; |
6020 | ResultType = Context.BoolTy; |
6021 | break; |
6022 | |
6023 | case Builtin::BI__sync_lock_test_and_set: |
6024 | case Builtin::BI__sync_lock_test_and_set_1: |
6025 | case Builtin::BI__sync_lock_test_and_set_2: |
6026 | case Builtin::BI__sync_lock_test_and_set_4: |
6027 | case Builtin::BI__sync_lock_test_and_set_8: |
6028 | case Builtin::BI__sync_lock_test_and_set_16: |
6029 | BuiltinIndex = 14; |
6030 | break; |
6031 | |
6032 | case Builtin::BI__sync_lock_release: |
6033 | case Builtin::BI__sync_lock_release_1: |
6034 | case Builtin::BI__sync_lock_release_2: |
6035 | case Builtin::BI__sync_lock_release_4: |
6036 | case Builtin::BI__sync_lock_release_8: |
6037 | case Builtin::BI__sync_lock_release_16: |
6038 | BuiltinIndex = 15; |
6039 | NumFixed = 0; |
6040 | ResultType = Context.VoidTy; |
6041 | break; |
6042 | |
6043 | case Builtin::BI__sync_swap: |
6044 | case Builtin::BI__sync_swap_1: |
6045 | case Builtin::BI__sync_swap_2: |
6046 | case Builtin::BI__sync_swap_4: |
6047 | case Builtin::BI__sync_swap_8: |
6048 | case Builtin::BI__sync_swap_16: |
6049 | BuiltinIndex = 16; |
6050 | break; |
6051 | } |
6052 | |
6053 | |
6054 | |
6055 | if (TheCall->getNumArgs() < 1+NumFixed) { |
6056 | Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least) |
6057 | << 0 << 1 + NumFixed << TheCall->getNumArgs() |
6058 | << Callee->getSourceRange(); |
6059 | return ExprError(); |
6060 | } |
6061 | |
6062 | Diag(TheCall->getEndLoc(), diag::warn_atomic_implicit_seq_cst) |
6063 | << Callee->getSourceRange(); |
6064 | |
6065 | if (WarnAboutSemanticsChange) { |
6066 | Diag(TheCall->getEndLoc(), diag::warn_sync_fetch_and_nand_semantics_change) |
6067 | << Callee->getSourceRange(); |
6068 | } |
6069 | |
6070 | |
6071 | |
6072 | unsigned NewBuiltinID = BuiltinIndices[BuiltinIndex][SizeIndex]; |
6073 | const char *NewBuiltinName = Context.BuiltinInfo.getName(NewBuiltinID); |
6074 | FunctionDecl *NewBuiltinDecl; |
6075 | if (NewBuiltinID == BuiltinID) |
6076 | NewBuiltinDecl = FDecl; |
6077 | else { |
6078 | |
6079 | DeclarationName DN(&Context.Idents.get(NewBuiltinName)); |
6080 | LookupResult Res(*this, DN, DRE->getBeginLoc(), LookupOrdinaryName); |
6081 | LookupName(Res, TUScope, true); |
6082 | assert(Res.getFoundDecl()); |
6083 | NewBuiltinDecl = dyn_cast<FunctionDecl>(Res.getFoundDecl()); |
6084 | if (!NewBuiltinDecl) |
6085 | return ExprError(); |
6086 | } |
6087 | |
6088 | |
6089 | |
6090 | |
6091 | for (unsigned i = 0; i != NumFixed; ++i) { |
6092 | ExprResult Arg = TheCall->getArg(i+1); |
6093 | |
6094 | |
6095 | |
6096 | |
6097 | InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, |
6098 | ValType, false); |
6099 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
6100 | if (Arg.isInvalid()) |
6101 | return ExprError(); |
6102 | |
6103 | |
6104 | |
6105 | |
6106 | |
6107 | |
6108 | |
6109 | TheCall->setArg(i+1, Arg.get()); |
6110 | } |
6111 | |
6112 | |
6113 | DeclRefExpr *NewDRE = DeclRefExpr::Create( |
6114 | Context, DRE->getQualifierLoc(), SourceLocation(), NewBuiltinDecl, |
6115 | false, DRE->getLocation(), Context.BuiltinFnTy, |
6116 | DRE->getValueKind(), nullptr, nullptr, DRE->isNonOdrUse()); |
6117 | |
6118 | |
6119 | |
6120 | QualType CalleePtrTy = Context.getPointerType(NewBuiltinDecl->getType()); |
6121 | ExprResult PromotedCall = ImpCastExprToType(NewDRE, CalleePtrTy, |
6122 | CK_BuiltinFnToFnPtr); |
6123 | TheCall->setCallee(PromotedCall.get()); |
6124 | |
6125 | |
6126 | |
6127 | |
6128 | TheCall->setType(ResultType); |
6129 | |
6130 | |
6131 | |
6132 | |
6133 | const auto *ExtIntValType = ValType->getAs<ExtIntType>(); |
6134 | if (ExtIntValType && !llvm::isPowerOf2_64(ExtIntValType->getNumBits())) { |
6135 | Diag(FirstArg->getExprLoc(), diag::err_atomic_builtin_ext_int_size); |
6136 | return ExprError(); |
6137 | } |
6138 | |
6139 | return TheCallResult; |
6140 | } |
6141 | |
6142 | |
6143 | |
6144 | |
6145 | |
6146 | |
6147 | |
6148 | ExprResult Sema::SemaBuiltinNontemporalOverloaded(ExprResult TheCallResult) { |
6149 | CallExpr *TheCall = (CallExpr *)TheCallResult.get(); |
6150 | DeclRefExpr *DRE = |
6151 | cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
6152 | FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl()); |
6153 | unsigned BuiltinID = FDecl->getBuiltinID(); |
6154 | assert((BuiltinID == Builtin::BI__builtin_nontemporal_store || |
6155 | BuiltinID == Builtin::BI__builtin_nontemporal_load) && |
6156 | "Unexpected nontemporal load/store builtin!"); |
6157 | bool isStore = BuiltinID == Builtin::BI__builtin_nontemporal_store; |
6158 | unsigned numArgs = isStore ? 2 : 1; |
6159 | |
6160 | |
6161 | if (checkArgCount(*this, TheCall, numArgs)) |
6162 | return ExprError(); |
6163 | |
6164 | |
6165 | |
6166 | |
6167 | |
6168 | Expr *PointerArg = TheCall->getArg(numArgs - 1); |
6169 | ExprResult PointerArgResult = |
6170 | DefaultFunctionArrayLvalueConversion(PointerArg); |
6171 | |
6172 | if (PointerArgResult.isInvalid()) |
6173 | return ExprError(); |
6174 | PointerArg = PointerArgResult.get(); |
6175 | TheCall->setArg(numArgs - 1, PointerArg); |
6176 | |
6177 | const PointerType *pointerType = PointerArg->getType()->getAs<PointerType>(); |
6178 | if (!pointerType) { |
6179 | Diag(DRE->getBeginLoc(), diag::err_nontemporal_builtin_must_be_pointer) |
6180 | << PointerArg->getType() << PointerArg->getSourceRange(); |
6181 | return ExprError(); |
6182 | } |
6183 | |
6184 | QualType ValType = pointerType->getPointeeType(); |
6185 | |
6186 | |
6187 | ValType = ValType.getUnqualifiedType(); |
6188 | if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && |
6189 | !ValType->isBlockPointerType() && !ValType->isFloatingType() && |
6190 | !ValType->isVectorType()) { |
6191 | Diag(DRE->getBeginLoc(), |
6192 | diag::err_nontemporal_builtin_must_be_pointer_intfltptr_or_vector) |
6193 | << PointerArg->getType() << PointerArg->getSourceRange(); |
6194 | return ExprError(); |
6195 | } |
6196 | |
6197 | if (!isStore) { |
6198 | TheCall->setType(ValType); |
6199 | return TheCallResult; |
6200 | } |
6201 | |
6202 | ExprResult ValArg = TheCall->getArg(0); |
6203 | InitializedEntity Entity = InitializedEntity::InitializeParameter( |
6204 | Context, ValType, false); |
6205 | ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); |
6206 | if (ValArg.isInvalid()) |
6207 | return ExprError(); |
6208 | |
6209 | TheCall->setArg(0, ValArg.get()); |
6210 | TheCall->setType(Context.VoidTy); |
6211 | return TheCallResult; |
6212 | } |
6213 | |
6214 | |
6215 | |
6216 | |
6217 | |
6218 | bool Sema::CheckObjCString(Expr *Arg) { |
6219 | Arg = Arg->IgnoreParenCasts(); |
6220 | StringLiteral *Literal = dyn_cast<StringLiteral>(Arg); |
6221 | |
6222 | if (!Literal || !Literal->isAscii()) { |
6223 | Diag(Arg->getBeginLoc(), diag::err_cfstring_literal_not_string_constant) |
6224 | << Arg->getSourceRange(); |
6225 | return true; |
6226 | } |
6227 | |
6228 | if (Literal->containsNonAsciiOrNull()) { |
6229 | StringRef String = Literal->getString(); |
6230 | unsigned NumBytes = String.size(); |
6231 | SmallVector<llvm::UTF16, 128> ToBuf(NumBytes); |
6232 | const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data(); |
6233 | llvm::UTF16 *ToPtr = &ToBuf[0]; |
6234 | |
6235 | llvm::ConversionResult Result = |
6236 | llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, |
6237 | ToPtr + NumBytes, llvm::strictConversion); |
6238 | |
6239 | if (Result != llvm::conversionOK) |
6240 | Diag(Arg->getBeginLoc(), diag::warn_cfstring_truncated) |
6241 | << Arg->getSourceRange(); |
6242 | } |
6243 | return false; |
6244 | } |
6245 | |
6246 | |
6247 | |
6248 | ExprResult Sema::CheckOSLogFormatStringArg(Expr *Arg) { |
6249 | Arg = Arg->IgnoreParenCasts(); |
6250 | auto *Literal = dyn_cast<StringLiteral>(Arg); |
6251 | if (!Literal) { |
6252 | if (auto *ObjcLiteral = dyn_cast<ObjCStringLiteral>(Arg)) { |
6253 | Literal = ObjcLiteral->getString(); |
6254 | } |
6255 | } |
6256 | |
6257 | if (!Literal || (!Literal->isAscii() && !Literal->isUTF8())) { |
6258 | return ExprError( |
6259 | Diag(Arg->getBeginLoc(), diag::err_os_log_format_not_string_constant) |
6260 | << Arg->getSourceRange()); |
6261 | } |
6262 | |
6263 | ExprResult Result(Literal); |
6264 | QualType ResultTy = Context.getPointerType(Context.CharTy.withConst()); |
6265 | InitializedEntity Entity = |
6266 | InitializedEntity::InitializeParameter(Context, ResultTy, false); |
6267 | Result = PerformCopyInitialization(Entity, SourceLocation(), Result); |
6268 | return Result; |
6269 | } |
6270 | |
6271 | |
6272 | |
6273 | static bool checkVAStartABI(Sema &S, unsigned BuiltinID, Expr *Fn) { |
6274 | const llvm::Triple &TT = S.Context.getTargetInfo().getTriple(); |
6275 | bool IsX64 = TT.getArch() == llvm::Triple::x86_64; |
6276 | bool IsAArch64 = (TT.getArch() == llvm::Triple::aarch64 || |
6277 | TT.getArch() == llvm::Triple::aarch64_32); |
6278 | bool IsWindows = TT.isOSWindows(); |
6279 | bool IsMSVAStart = BuiltinID == Builtin::BI__builtin_ms_va_start; |
6280 | if (IsX64 || IsAArch64) { |
6281 | CallingConv CC = CC_C; |
6282 | if (const FunctionDecl *FD = S.getCurFunctionDecl()) |
6283 | CC = FD->getType()->castAs<FunctionType>()->getCallConv(); |
6284 | if (IsMSVAStart) { |
6285 | |
6286 | if (CC == CC_X86_64SysV || (!IsWindows && CC != CC_Win64)) |
6287 | return S.Diag(Fn->getBeginLoc(), |
6288 | diag::err_ms_va_start_used_in_sysv_function); |
6289 | } else { |
6290 | |
6291 | |
6292 | |
6293 | |
6294 | if ((IsWindows && CC == CC_X86_64SysV) || |
6295 | (!IsWindows && CC == CC_Win64)) |
6296 | return S.Diag(Fn->getBeginLoc(), |
6297 | diag::err_va_start_used_in_wrong_abi_function) |
6298 | << !IsWindows; |
6299 | } |
6300 | return false; |
6301 | } |
6302 | |
6303 | if (IsMSVAStart) |
6304 | return S.Diag(Fn->getBeginLoc(), diag::err_builtin_x64_aarch64_only); |
6305 | return false; |
6306 | } |
6307 | |
6308 | static bool checkVAStartIsInVariadicFunction(Sema &S, Expr *Fn, |
6309 | ParmVarDecl **LastParam = nullptr) { |
6310 | |
6311 | |
6312 | bool IsVariadic = false; |
6313 | ArrayRef<ParmVarDecl *> Params; |
6314 | DeclContext *Caller = S.CurContext; |
6315 | if (auto *Block = dyn_cast<BlockDecl>(Caller)) { |
6316 | IsVariadic = Block->isVariadic(); |
6317 | Params = Block->parameters(); |
6318 | } else if (auto *FD = dyn_cast<FunctionDecl>(Caller)) { |
6319 | IsVariadic = FD->isVariadic(); |
6320 | Params = FD->parameters(); |
6321 | } else if (auto *MD = dyn_cast<ObjCMethodDecl>(Caller)) { |
6322 | IsVariadic = MD->isVariadic(); |
6323 | |
6324 | Params = MD->parameters(); |
6325 | } else if (isa<CapturedDecl>(Caller)) { |
6326 | |
6327 | S.Diag(Fn->getBeginLoc(), diag::err_va_start_captured_stmt); |
6328 | return true; |
6329 | } else { |
6330 | |
6331 | S.Diag(Fn->getBeginLoc(), diag::err_va_start_outside_function); |
6332 | return true; |
6333 | } |
6334 | |
6335 | if (!IsVariadic) { |
6336 | S.Diag(Fn->getBeginLoc(), diag::err_va_start_fixed_function); |
6337 | return true; |
6338 | } |
6339 | |
6340 | if (LastParam) |
6341 | *LastParam = Params.empty() ? nullptr : Params.back(); |
6342 | |
6343 | return false; |
6344 | } |
6345 | |
6346 | |
6347 | |
6348 | |
6349 | bool Sema::SemaBuiltinVAStart(unsigned BuiltinID, CallExpr *TheCall) { |
6350 | Expr *Fn = TheCall->getCallee(); |
6351 | |
6352 | if (checkVAStartABI(*this, BuiltinID, Fn)) |
6353 | return true; |
6354 | |
6355 | if (checkArgCount(*this, TheCall, 2)) |
6356 | return true; |
6357 | |
6358 | |
6359 | if (checkBuiltinArgument(*this, TheCall, 0)) |
6360 | return true; |
6361 | |
6362 | |
6363 | ParmVarDecl *LastParam; |
6364 | if (checkVAStartIsInVariadicFunction(*this, Fn, &LastParam)) |
6365 | return true; |
6366 | |
6367 | |
6368 | |
6369 | bool SecondArgIsLastNamedArgument = false; |
6370 | const Expr *Arg = TheCall->getArg(1)->IgnoreParenCasts(); |
6371 | |
6372 | |
6373 | |
6374 | QualType Type; |
6375 | SourceLocation ParamLoc; |
6376 | bool IsCRegister = false; |
6377 | |
6378 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Arg)) { |
6379 | if (const ParmVarDecl *PV = dyn_cast<ParmVarDecl>(DR->getDecl())) { |
6380 | SecondArgIsLastNamedArgument = PV == LastParam; |
6381 | |
6382 | Type = PV->getType(); |
6383 | ParamLoc = PV->getLocation(); |
6384 | IsCRegister = |
6385 | PV->getStorageClass() == SC_Register && !getLangOpts().CPlusPlus; |
6386 | } |
6387 | } |
6388 | |
6389 | if (!SecondArgIsLastNamedArgument) |
6390 | Diag(TheCall->getArg(1)->getBeginLoc(), |
6391 | diag::warn_second_arg_of_va_start_not_last_named_param); |
6392 | else if (IsCRegister || Type->isReferenceType() || |
6393 | Type->isSpecificBuiltinType(BuiltinType::Float) || [=] { |
6394 | |
6395 | |
6396 | if (!Type->isPromotableIntegerType()) |
6397 | return false; |
6398 | if (!Type->isEnumeralType()) |
6399 | return true; |
6400 | const EnumDecl *ED = Type->castAs<EnumType>()->getDecl(); |
6401 | return !(ED && |
6402 | Context.typesAreCompatible(ED->getPromotionType(), Type)); |
6403 | }()) { |
6404 | unsigned Reason = 0; |
6405 | if (Type->isReferenceType()) Reason = 1; |
6406 | else if (IsCRegister) Reason = 2; |
6407 | Diag(Arg->getBeginLoc(), diag::warn_va_start_type_is_undefined) << Reason; |
6408 | Diag(ParamLoc, diag::note_parameter_type) << Type; |
6409 | } |
6410 | |
6411 | TheCall->setType(Context.VoidTy); |
6412 | return false; |
6413 | } |
6414 | |
6415 | bool Sema::SemaBuiltinVAStartARMMicrosoft(CallExpr *Call) { |
6416 | |
6417 | |
6418 | |
6419 | Expr *Func = Call->getCallee(); |
6420 | |
6421 | if (Call->getNumArgs() < 3) |
6422 | return Diag(Call->getEndLoc(), |
6423 | diag::err_typecheck_call_too_few_args_at_least) |
6424 | << 0 << 3 << Call->getNumArgs(); |
6425 | |
6426 | |
6427 | if (checkBuiltinArgument(*this, Call, 0)) |
6428 | return true; |
6429 | |
6430 | |
6431 | if (checkVAStartIsInVariadicFunction(*this, Func)) |
6432 | return true; |
6433 | |
6434 | |
6435 | |
6436 | const Expr *Arg1 = Call->getArg(1)->IgnoreParens(); |
6437 | const Type *Arg1Ty = Arg1->getType().getCanonicalType().getTypePtr(); |
6438 | |
6439 | const Expr *Arg2 = Call->getArg(2)->IgnoreParens(); |
6440 | const Type *Arg2Ty = Arg2->getType().getCanonicalType().getTypePtr(); |
6441 | |
6442 | const QualType &ConstCharPtrTy = |
6443 | Context.getPointerType(Context.CharTy.withConst()); |
6444 | if (!Arg1Ty->isPointerType() || |
6445 | Arg1Ty->getPointeeType().withoutLocalFastQualifiers() != Context.CharTy) |
6446 | Diag(Arg1->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
6447 | << Arg1->getType() << ConstCharPtrTy << 1 |
6448 | << 0 |
6449 | << 3 |
6450 | << 2 << Arg1->getType() << ConstCharPtrTy; |
6451 | |
6452 | const QualType SizeTy = Context.getSizeType(); |
6453 | if (Arg2Ty->getCanonicalTypeInternal().withoutLocalFastQualifiers() != SizeTy) |
6454 | Diag(Arg2->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
6455 | << Arg2->getType() << SizeTy << 1 |
6456 | << 0 |
6457 | << 3 |
6458 | << 3 << Arg2->getType() << SizeTy; |
6459 | |
6460 | return false; |
6461 | } |
6462 | |
6463 | |
6464 | |
6465 | bool Sema::SemaBuiltinUnorderedCompare(CallExpr *TheCall) { |
6466 | if (checkArgCount(*this, TheCall, 2)) |
6467 | return true; |
6468 | |
6469 | ExprResult OrigArg0 = TheCall->getArg(0); |
6470 | ExprResult OrigArg1 = TheCall->getArg(1); |
6471 | |
6472 | |
6473 | |
6474 | QualType Res = UsualArithmeticConversions( |
6475 | OrigArg0, OrigArg1, TheCall->getExprLoc(), ACK_Comparison); |
6476 | if (OrigArg0.isInvalid() || OrigArg1.isInvalid()) |
6477 | return true; |
6478 | |
6479 | |
6480 | |
6481 | |
6482 | TheCall->setArg(0, OrigArg0.get()); |
6483 | TheCall->setArg(1, OrigArg1.get()); |
6484 | |
6485 | if (OrigArg0.get()->isTypeDependent() || OrigArg1.get()->isTypeDependent()) |
6486 | return false; |
6487 | |
6488 | |
6489 | |
6490 | if (Res.isNull() || !Res->isRealFloatingType()) |
6491 | return Diag(OrigArg0.get()->getBeginLoc(), |
6492 | diag::err_typecheck_call_invalid_ordered_compare) |
6493 | << OrigArg0.get()->getType() << OrigArg1.get()->getType() |
6494 | << SourceRange(OrigArg0.get()->getBeginLoc(), |
6495 | OrigArg1.get()->getEndLoc()); |
6496 | |
6497 | return false; |
6498 | } |
6499 | |
6500 | |
6501 | |
6502 | |
6503 | |
6504 | bool Sema::SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs) { |
6505 | if (checkArgCount(*this, TheCall, NumArgs)) |
6506 | return true; |
6507 | |
6508 | |
6509 | |
6510 | for (unsigned i = 0; i < NumArgs - 1; ++i) { |
6511 | Expr *Arg = TheCall->getArg(i); |
6512 | |
6513 | if (Arg->isTypeDependent()) |
6514 | return false; |
6515 | |
6516 | ExprResult Res = PerformImplicitConversion(Arg, Context.IntTy, AA_Passing); |
6517 | |
6518 | if (Res.isInvalid()) |
6519 | return true; |
6520 | TheCall->setArg(i, Res.get()); |
6521 | } |
6522 | |
6523 | Expr *OrigArg = TheCall->getArg(NumArgs-1); |
6524 | |
6525 | if (OrigArg->isTypeDependent()) |
6526 | return false; |
6527 | |
6528 | |
6529 | |
6530 | |
6531 | if (Context.getTargetInfo().useFP16ConversionIntrinsics()) |
6532 | OrigArg = UsualUnaryConversions(OrigArg).get(); |
6533 | else |
6534 | OrigArg = DefaultFunctionArrayLvalueConversion(OrigArg).get(); |
6535 | TheCall->setArg(NumArgs - 1, OrigArg); |
6536 | |
6537 | |
6538 | if (!OrigArg->getType()->isRealFloatingType()) |
6539 | return Diag(OrigArg->getBeginLoc(), |
6540 | diag::err_typecheck_call_invalid_unary_fp) |
6541 | << OrigArg->getType() << OrigArg->getSourceRange(); |
6542 | |
6543 | return false; |
6544 | } |
6545 | |
6546 | |
6547 | bool Sema::SemaBuiltinComplex(CallExpr *TheCall) { |
6548 | if (checkArgCount(*this, TheCall, 2)) |
6549 | return true; |
6550 | |
6551 | bool Dependent = false; |
6552 | for (unsigned I = 0; I != 2; ++I) { |
6553 | Expr *Arg = TheCall->getArg(I); |
6554 | QualType T = Arg->getType(); |
6555 | if (T->isDependentType()) { |
6556 | Dependent = true; |
6557 | continue; |
6558 | } |
6559 | |
6560 | |
6561 | |
6562 | if (!T->isRealFloatingType()) { |
6563 | return Diag(Arg->getBeginLoc(), diag::err_typecheck_call_requires_real_fp) |
6564 | << Arg->getType() << Arg->getSourceRange(); |
6565 | } |
6566 | |
6567 | ExprResult Converted = DefaultLvalueConversion(Arg); |
6568 | if (Converted.isInvalid()) |
6569 | return true; |
6570 | TheCall->setArg(I, Converted.get()); |
6571 | } |
6572 | |
6573 | if (Dependent) { |
6574 | TheCall->setType(Context.DependentTy); |
6575 | return false; |
6576 | } |
6577 | |
6578 | Expr *Real = TheCall->getArg(0); |
6579 | Expr *Imag = TheCall->getArg(1); |
6580 | if (!Context.hasSameType(Real->getType(), Imag->getType())) { |
6581 | return Diag(Real->getBeginLoc(), |
6582 | diag::err_typecheck_call_different_arg_types) |
6583 | << Real->getType() << Imag->getType() |
6584 | << Real->getSourceRange() << Imag->getSourceRange(); |
6585 | } |
6586 | |
6587 | |
6588 | |
6589 | |
6590 | if (Real->getType()->isFloat16Type()) |
6591 | return Diag(TheCall->getBeginLoc(), diag::err_invalid_complex_spec) |
6592 | << "_Float16"; |
6593 | if (Real->getType()->isHalfType()) |
6594 | return Diag(TheCall->getBeginLoc(), diag::err_invalid_complex_spec) |
6595 | << "half"; |
6596 | |
6597 | TheCall->setType(Context.getComplexType(Real->getType())); |
6598 | return false; |
6599 | } |
6600 | |
6601 | |
6602 | |
6603 | |
6604 | |
6605 | |
6606 | |
6607 | |
6608 | bool Sema::SemaBuiltinVSX(CallExpr *TheCall) { |
6609 | unsigned ExpectedNumArgs = 3; |
6610 | if (checkArgCount(*this, TheCall, ExpectedNumArgs)) |
6611 | return true; |
6612 | |
6613 | |
6614 | if (!TheCall->getArg(2)->isIntegerConstantExpr(Context)) |
6615 | return Diag(TheCall->getBeginLoc(), |
6616 | diag::err_vsx_builtin_nonconstant_argument) |
6617 | << 3 << TheCall->getDirectCallee() |
6618 | << SourceRange(TheCall->getArg(2)->getBeginLoc(), |
6619 | TheCall->getArg(2)->getEndLoc()); |
6620 | |
6621 | QualType Arg1Ty = TheCall->getArg(0)->getType(); |
6622 | QualType Arg2Ty = TheCall->getArg(1)->getType(); |
6623 | |
6624 | |
6625 | SourceLocation BuiltinLoc = TheCall->getBeginLoc(); |
6626 | if ((!Arg1Ty->isVectorType() && !Arg1Ty->isDependentType()) || |
6627 | (!Arg2Ty->isVectorType() && !Arg2Ty->isDependentType())) { |
6628 | return Diag(BuiltinLoc, diag::err_vec_builtin_non_vector) |
6629 | << TheCall->getDirectCallee() |
6630 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6631 | TheCall->getArg(1)->getEndLoc()); |
6632 | } |
6633 | |
6634 | |
6635 | if (!Context.hasSameUnqualifiedType(Arg1Ty, Arg2Ty)) { |
6636 | return Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_vector) |
6637 | << TheCall->getDirectCallee() |
6638 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6639 | TheCall->getArg(1)->getEndLoc()); |
6640 | } |
6641 | |
6642 | |
6643 | |
6644 | |
6645 | TheCall->setType(Arg1Ty); |
6646 | |
6647 | return false; |
6648 | } |
6649 | |
6650 | |
6651 | |
6652 | ExprResult Sema::SemaBuiltinShuffleVector(CallExpr *TheCall) { |
6653 | if (TheCall->getNumArgs() < 2) |
6654 | return ExprError(Diag(TheCall->getEndLoc(), |
6655 | diag::err_typecheck_call_too_few_args_at_least) |
6656 | << 0 << 2 << TheCall->getNumArgs() |
6657 | << TheCall->getSourceRange()); |
6658 | |
6659 | |
6660 | |
6661 | |
6662 | QualType resType = TheCall->getArg(0)->getType(); |
6663 | unsigned numElements = 0; |
6664 | |
6665 | if (!TheCall->getArg(0)->isTypeDependent() && |
6666 | !TheCall->getArg(1)->isTypeDependent()) { |
6667 | QualType LHSType = TheCall->getArg(0)->getType(); |
6668 | QualType RHSType = TheCall->getArg(1)->getType(); |
6669 | |
6670 | if (!LHSType->isVectorType() || !RHSType->isVectorType()) |
6671 | return ExprError( |
6672 | Diag(TheCall->getBeginLoc(), diag::err_vec_builtin_non_vector) |
6673 | << TheCall->getDirectCallee() |
6674 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6675 | TheCall->getArg(1)->getEndLoc())); |
6676 | |
6677 | numElements = LHSType->castAs<VectorType>()->getNumElements(); |
6678 | unsigned numResElements = TheCall->getNumArgs() - 2; |
6679 | |
6680 | |
6681 | |
6682 | |
6683 | if (TheCall->getNumArgs() == 2) { |
6684 | if (!RHSType->hasIntegerRepresentation() || |
6685 | RHSType->castAs<VectorType>()->getNumElements() != numElements) |
6686 | return ExprError(Diag(TheCall->getBeginLoc(), |
6687 | diag::err_vec_builtin_incompatible_vector) |
6688 | << TheCall->getDirectCallee() |
6689 | << SourceRange(TheCall->getArg(1)->getBeginLoc(), |
6690 | TheCall->getArg(1)->getEndLoc())); |
6691 | } else if (!Context.hasSameUnqualifiedType(LHSType, RHSType)) { |
6692 | return ExprError(Diag(TheCall->getBeginLoc(), |
6693 | diag::err_vec_builtin_incompatible_vector) |
6694 | << TheCall->getDirectCallee() |
6695 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6696 | TheCall->getArg(1)->getEndLoc())); |
6697 | } else if (numElements != numResElements) { |
6698 | QualType eltType = LHSType->castAs<VectorType>()->getElementType(); |
6699 | resType = Context.getVectorType(eltType, numResElements, |
6700 | VectorType::GenericVector); |
6701 | } |
6702 | } |
6703 | |
6704 | for (unsigned i = 2; i < TheCall->getNumArgs(); i++) { |
6705 | if (TheCall->getArg(i)->isTypeDependent() || |
6706 | TheCall->getArg(i)->isValueDependent()) |
6707 | continue; |
6708 | |
6709 | Optional<llvm::APSInt> Result; |
6710 | if (!(Result = TheCall->getArg(i)->getIntegerConstantExpr(Context))) |
6711 | return ExprError(Diag(TheCall->getBeginLoc(), |
6712 | diag::err_shufflevector_nonconstant_argument) |
6713 | << TheCall->getArg(i)->getSourceRange()); |
6714 | |
6715 | |
6716 | if (Result->isSigned() && Result->isAllOnesValue()) |
6717 | continue; |
6718 | |
6719 | if (Result->getActiveBits() > 64 || |
6720 | Result->getZExtValue() >= numElements * 2) |
6721 | return ExprError(Diag(TheCall->getBeginLoc(), |
6722 | diag::err_shufflevector_argument_too_large) |
6723 | << TheCall->getArg(i)->getSourceRange()); |
6724 | } |
6725 | |
6726 | SmallVector<Expr*, 32> exprs; |
6727 | |
6728 | for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; i++) { |
6729 | exprs.push_back(TheCall->getArg(i)); |
6730 | TheCall->setArg(i, nullptr); |
6731 | } |
6732 | |
6733 | return new (Context) ShuffleVectorExpr(Context, exprs, resType, |
6734 | TheCall->getCallee()->getBeginLoc(), |
6735 | TheCall->getRParenLoc()); |
6736 | } |
6737 | |
6738 | |
6739 | ExprResult Sema::SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, |
6740 | SourceLocation BuiltinLoc, |
6741 | SourceLocation RParenLoc) { |
6742 | ExprValueKind VK = VK_PRValue; |
6743 | ExprObjectKind OK = OK_Ordinary; |
6744 | QualType DstTy = TInfo->getType(); |
6745 | QualType SrcTy = E->getType(); |
6746 | |
6747 | if (!SrcTy->isVectorType() && !SrcTy->isDependentType()) |
6748 | return ExprError(Diag(BuiltinLoc, |
6749 | diag::err_convertvector_non_vector) |
6750 | << E->getSourceRange()); |
6751 | if (!DstTy->isVectorType() && !DstTy->isDependentType()) |
6752 | return ExprError(Diag(BuiltinLoc, |
6753 | diag::err_convertvector_non_vector_type)); |
6754 | |
6755 | if (!SrcTy->isDependentType() && !DstTy->isDependentType()) { |
6756 | unsigned SrcElts = SrcTy->castAs<VectorType>()->getNumElements(); |
6757 | unsigned DstElts = DstTy->castAs<VectorType>()->getNumElements(); |
6758 | if (SrcElts != DstElts) |
6759 | return ExprError(Diag(BuiltinLoc, |
6760 | diag::err_convertvector_incompatible_vector) |
6761 | << E->getSourceRange()); |
6762 | } |
6763 | |
6764 | return new (Context) |
6765 | ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc); |
6766 | } |
6767 | |
6768 | |
6769 | |
6770 | |
6771 | bool Sema::SemaBuiltinPrefetch(CallExpr *TheCall) { |
6772 | unsigned NumArgs = TheCall->getNumArgs(); |
6773 | |
6774 | if (NumArgs > 3) |
6775 | return Diag(TheCall->getEndLoc(), |
6776 | diag::err_typecheck_call_too_many_args_at_most) |
6777 | << 0 << 3 << NumArgs << TheCall->getSourceRange(); |
6778 | |
6779 | |
6780 | |
6781 | for (unsigned i = 1; i != NumArgs; ++i) |
6782 | if (SemaBuiltinConstantArgRange(TheCall, i, 0, i == 1 ? 1 : 3)) |
6783 | return true; |
6784 | |
6785 | return false; |
6786 | } |
6787 | |
6788 | |
6789 | bool Sema::SemaBuiltinArithmeticFence(CallExpr *TheCall) { |
6790 | if (!Context.getTargetInfo().checkArithmeticFenceSupported()) |
6791 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_target_unsupported) |
6792 | << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc()); |
6793 | if (checkArgCount(*this, TheCall, 1)) |
6794 | return true; |
6795 | Expr *Arg = TheCall->getArg(0); |
6796 | if (Arg->isInstantiationDependent()) |
6797 | return false; |
6798 | |
6799 | QualType ArgTy = Arg->getType(); |
6800 | if (!ArgTy->hasFloatingRepresentation()) |
6801 | return Diag(TheCall->getEndLoc(), diag::err_typecheck_expect_flt_or_vector) |
6802 | << ArgTy; |
6803 | if (Arg->isLValue()) { |
6804 | ExprResult FirstArg = DefaultLvalueConversion(Arg); |
6805 | TheCall->setArg(0, FirstArg.get()); |
6806 | } |
6807 | TheCall->setType(TheCall->getArg(0)->getType()); |
6808 | return false; |
6809 | } |
6810 | |
6811 | |
6812 | |
6813 | |
6814 | bool Sema::SemaBuiltinAssume(CallExpr *TheCall) { |
6815 | Expr *Arg = TheCall->getArg(0); |
6816 | if (Arg->isInstantiationDependent()) return false; |
6817 | |
6818 | if (Arg->HasSideEffects(Context)) |
6819 | Diag(Arg->getBeginLoc(), diag::warn_assume_side_effects) |
6820 | << Arg->getSourceRange() |
6821 | << cast<FunctionDecl>(TheCall->getCalleeDecl())->getIdentifier(); |
6822 | |
6823 | return false; |
6824 | } |
6825 | |
6826 | |
6827 | |
6828 | |
6829 | bool Sema::SemaBuiltinAllocaWithAlign(CallExpr *TheCall) { |
6830 | |
6831 | Expr *Arg = TheCall->getArg(1); |
6832 | |
6833 | |
6834 | if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { |
6835 | if (const auto *UE = |
6836 | dyn_cast<UnaryExprOrTypeTraitExpr>(Arg->IgnoreParenImpCasts())) |
6837 | if (UE->getKind() == UETT_AlignOf || |
6838 | UE->getKind() == UETT_PreferredAlignOf) |
6839 | Diag(TheCall->getBeginLoc(), diag::warn_alloca_align_alignof) |
6840 | << Arg->getSourceRange(); |
6841 | |
6842 | llvm::APSInt Result = Arg->EvaluateKnownConstInt(Context); |
6843 | |
6844 | if (!Result.isPowerOf2()) |
6845 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_not_power_of_two) |
6846 | << Arg->getSourceRange(); |
6847 | |
6848 | if (Result < Context.getCharWidth()) |
6849 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_too_small) |
6850 | << (unsigned)Context.getCharWidth() << Arg->getSourceRange(); |
6851 | |
6852 | if (Result > std::numeric_limits<int32_t>::max()) |
6853 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_too_big) |
6854 | << std::numeric_limits<int32_t>::max() << Arg->getSourceRange(); |
6855 | } |
6856 | |
6857 | return false; |
6858 | } |
6859 | |
6860 | |
6861 | |
6862 | bool Sema::SemaBuiltinAssumeAligned(CallExpr *TheCall) { |
6863 | unsigned NumArgs = TheCall->getNumArgs(); |
6864 | |
6865 | if (NumArgs > 3) |
6866 | return Diag(TheCall->getEndLoc(), |
6867 | diag::err_typecheck_call_too_many_args_at_most) |
6868 | << 0 << 3 << NumArgs << TheCall->getSourceRange(); |
6869 | |
6870 | |
6871 | Expr *Arg = TheCall->getArg(1); |
6872 | |
6873 | |
6874 | if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { |
6875 | llvm::APSInt Result; |
6876 | if (SemaBuiltinConstantArg(TheCall, 1, Result)) |
6877 | return true; |
6878 | |
6879 | if (!Result.isPowerOf2()) |
6880 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_not_power_of_two) |
6881 | << Arg->getSourceRange(); |
6882 | |
6883 | if (Result > Sema::MaximumAlignment) |
6884 | Diag(TheCall->getBeginLoc(), diag::warn_assume_aligned_too_great) |
6885 | << Arg->getSourceRange() << Sema::MaximumAlignment; |
6886 | } |
6887 | |
6888 | if (NumArgs > 2) { |
6889 | ExprResult Arg(TheCall->getArg(2)); |
6890 | InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, |
6891 | Context.getSizeType(), false); |
6892 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
6893 | if (Arg.isInvalid()) return true; |
6894 | TheCall->setArg(2, Arg.get()); |
6895 | } |
6896 | |
6897 | return false; |
6898 | } |
6899 | |
6900 | bool Sema::SemaBuiltinOSLogFormat(CallExpr *TheCall) { |
6901 | unsigned BuiltinID = |
6902 | cast<FunctionDecl>(TheCall->getCalleeDecl())->getBuiltinID(); |
6903 | bool IsSizeCall = BuiltinID == Builtin::BI__builtin_os_log_format_buffer_size; |
6904 | |
6905 | unsigned NumArgs = TheCall->getNumArgs(); |
6906 | unsigned NumRequiredArgs = IsSizeCall ? 1 : 2; |
6907 | if (NumArgs < NumRequiredArgs) { |
6908 | return Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args) |
6909 | << 0 << NumRequiredArgs << NumArgs |
6910 | << TheCall->getSourceRange(); |
6911 | } |
6912 | if (NumArgs >= NumRequiredArgs + 0x100) { |
6913 | return Diag(TheCall->getEndLoc(), |
6914 | diag::err_typecheck_call_too_many_args_at_most) |
6915 | << 0 << (NumRequiredArgs + 0xff) << NumArgs |
6916 | << TheCall->getSourceRange(); |
6917 | } |
6918 | unsigned i = 0; |
6919 | |
6920 | |
6921 | if (!IsSizeCall) { |
6922 | ExprResult Arg(TheCall->getArg(i)); |
6923 | InitializedEntity Entity = InitializedEntity::InitializeParameter( |
6924 | Context, Context.VoidPtrTy, false); |
6925 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
6926 | if (Arg.isInvalid()) |
6927 | return true; |
6928 | TheCall->setArg(i, Arg.get()); |
6929 | i++; |
6930 | } |
6931 | |
6932 | |
6933 | unsigned FormatIdx = i; |
6934 | { |
6935 | ExprResult Arg = CheckOSLogFormatStringArg(TheCall->getArg(i)); |
6936 | if (Arg.isInvalid()) |
6937 | return true; |
6938 | TheCall->setArg(i, Arg.get()); |
6939 | i++; |
6940 | } |
6941 | |
6942 | |
6943 | unsigned FirstDataArg = i; |
6944 | while (i < NumArgs) { |
6945 | ExprResult Arg = DefaultVariadicArgumentPromotion( |
6946 | TheCall->getArg(i), VariadicFunction, nullptr); |
6947 | if (Arg.isInvalid()) |
6948 | return true; |
6949 | CharUnits ArgSize = Context.getTypeSizeInChars(Arg.get()->getType()); |
6950 | if (ArgSize.getQuantity() >= 0x100) { |
6951 | return Diag(Arg.get()->getEndLoc(), diag::err_os_log_argument_too_big) |
6952 | << i << (int)ArgSize.getQuantity() << 0xff |
6953 | << TheCall->getSourceRange(); |
6954 | } |
6955 | TheCall->setArg(i, Arg.get()); |
6956 | i++; |
6957 | } |
6958 | |
6959 | |
6960 | |
6961 | if (!IsSizeCall) { |
6962 | llvm::SmallBitVector CheckedVarArgs(NumArgs, false); |
6963 | ArrayRef<const Expr *> Args(TheCall->getArgs(), TheCall->getNumArgs()); |
6964 | bool Success = CheckFormatArguments( |
6965 | Args, false, FormatIdx, FirstDataArg, FST_OSLog, |
6966 | VariadicFunction, TheCall->getBeginLoc(), SourceRange(), |
6967 | CheckedVarArgs); |
6968 | if (!Success) |
6969 | return true; |
6970 | } |
6971 | |
6972 | if (IsSizeCall) { |
6973 | TheCall->setType(Context.getSizeType()); |
6974 | } else { |
6975 | TheCall->setType(Context.VoidPtrTy); |
6976 | } |
6977 | return false; |
6978 | } |
6979 | |
6980 | |
6981 | |
6982 | bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, |
6983 | llvm::APSInt &Result) { |
6984 | Expr *Arg = TheCall->getArg(ArgNum); |
6985 | DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
6986 | FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl()); |
6987 | |
6988 | if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; |
6989 | |
6990 | Optional<llvm::APSInt> R; |
6991 | if (!(R = Arg->getIntegerConstantExpr(Context))) |
6992 | return Diag(TheCall->getBeginLoc(), diag::err_constant_integer_arg_type) |
6993 | << FDecl->getDeclName() << Arg->getSourceRange(); |
6994 | Result = *R; |
6995 | return false; |
6996 | } |
6997 | |
6998 | |
6999 | |
7000 | bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, |
7001 | int Low, int High, bool RangeIsError) { |
7002 | if (isConstantEvaluated()) |
7003 | return false; |
7004 | llvm::APSInt Result; |
7005 | |
7006 | |
7007 | Expr *Arg = TheCall->getArg(ArgNum); |
7008 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7009 | return false; |
7010 | |
7011 | |
7012 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
7013 | return true; |
7014 | |
7015 | if (Result.getSExtValue() < Low || Result.getSExtValue() > High) { |
7016 | if (RangeIsError) |
7017 | return Diag(TheCall->getBeginLoc(), diag::err_argument_invalid_range) |
7018 | << toString(Result, 10) << Low << High << Arg->getSourceRange(); |
7019 | else |
7020 | |
7021 | |
7022 | DiagRuntimeBehavior(TheCall->getBeginLoc(), TheCall, |
7023 | PDiag(diag::warn_argument_invalid_range) |
7024 | << toString(Result, 10) << Low << High |
7025 | << Arg->getSourceRange()); |
7026 | } |
7027 | |
7028 | return false; |
7029 | } |
7030 | |
7031 | |
7032 | |
7033 | bool Sema::SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum, |
7034 | unsigned Num) { |
7035 | llvm::APSInt Result; |
7036 | |
7037 | |
7038 | Expr *Arg = TheCall->getArg(ArgNum); |
7039 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7040 | return false; |
7041 | |
7042 | |
7043 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
7044 | return true; |
7045 | |
7046 | if (Result.getSExtValue() % Num != 0) |
7047 | return Diag(TheCall->getBeginLoc(), diag::err_argument_not_multiple) |
7048 | << Num << Arg->getSourceRange(); |
7049 | |
7050 | return false; |
7051 | } |
7052 | |
7053 | |
7054 | |
7055 | bool Sema::SemaBuiltinConstantArgPower2(CallExpr *TheCall, int ArgNum) { |
7056 | llvm::APSInt Result; |
7057 | |
7058 | |
7059 | Expr *Arg = TheCall->getArg(ArgNum); |
7060 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7061 | return false; |
7062 | |
7063 | |
7064 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
7065 | return true; |
7066 | |
7067 | |
7068 | |
7069 | if (Result.isStrictlyPositive() && (Result & (Result - 1)) == 0) |
7070 | return false; |
7071 | |
7072 | return Diag(TheCall->getBeginLoc(), diag::err_argument_not_power_of_2) |
7073 | << Arg->getSourceRange(); |
7074 | } |
7075 | |
7076 | static bool IsShiftedByte(llvm::APSInt Value) { |
7077 | if (Value.isNegative()) |
7078 | return false; |
7079 | |
7080 | |
7081 | while (true) { |
7082 | |
7083 | if (Value < 0x100) |
7084 | return true; |
7085 | |
7086 | |
7087 | |
7088 | if ((Value & 0xFF) != 0) |
7089 | return false; |
7090 | |
7091 | |
7092 | |
7093 | |
7094 | Value >>= 8; |
7095 | } |
7096 | } |
7097 | |
7098 | |
7099 | |
7100 | |
7101 | bool Sema::SemaBuiltinConstantArgShiftedByte(CallExpr *TheCall, int ArgNum, |
7102 | unsigned ArgBits) { |
7103 | llvm::APSInt Result; |
7104 | |
7105 | |
7106 | Expr *Arg = TheCall->getArg(ArgNum); |
7107 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7108 | return false; |
7109 | |
7110 | |
7111 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
7112 | return true; |
7113 | |
7114 | |
7115 | Result = Result.getLoBits(ArgBits); |
7116 | Result.setIsUnsigned(true); |
7117 | |
7118 | if (IsShiftedByte(Result)) |
7119 | return false; |
7120 | |
7121 | return Diag(TheCall->getBeginLoc(), diag::err_argument_not_shifted_byte) |
7122 | << Arg->getSourceRange(); |
7123 | } |
7124 | |
7125 | |
7126 | |
7127 | |
7128 | |
7129 | |
7130 | bool Sema::SemaBuiltinConstantArgShiftedByteOrXXFF(CallExpr *TheCall, |
7131 | int ArgNum, |
7132 | unsigned ArgBits) { |
7133 | llvm::APSInt Result; |
7134 | |
7135 | |
7136 | Expr *Arg = TheCall->getArg(ArgNum); |
7137 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7138 | return false; |
7139 | |
7140 | |
7141 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
7142 | return true; |
7143 | |
7144 | |
7145 | Result = Result.getLoBits(ArgBits); |
7146 | Result.setIsUnsigned(true); |
7147 | |
7148 | |
7149 | if (IsShiftedByte(Result) || |
7150 | (Result > 0 && Result < 0x10000 && (Result & 0xFF) == 0xFF)) |
7151 | return false; |
7152 | |
7153 | return Diag(TheCall->getBeginLoc(), |
7154 | diag::err_argument_not_shifted_byte_or_xxff) |
7155 | << Arg->getSourceRange(); |
7156 | } |
7157 | |
7158 | |
7159 | bool Sema::SemaBuiltinARMMemoryTaggingCall(unsigned BuiltinID, CallExpr *TheCall) { |
7160 | if (BuiltinID == AArch64::BI__builtin_arm_irg) { |
7161 | if (checkArgCount(*this, TheCall, 2)) |
7162 | return true; |
7163 | Expr *Arg0 = TheCall->getArg(0); |
7164 | Expr *Arg1 = TheCall->getArg(1); |
7165 | |
7166 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7167 | if (FirstArg.isInvalid()) |
7168 | return true; |
7169 | QualType FirstArgType = FirstArg.get()->getType(); |
7170 | if (!FirstArgType->isAnyPointerType()) |
7171 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7172 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7173 | TheCall->setArg(0, FirstArg.get()); |
7174 | |
7175 | ExprResult SecArg = DefaultLvalueConversion(Arg1); |
7176 | if (SecArg.isInvalid()) |
7177 | return true; |
7178 | QualType SecArgType = SecArg.get()->getType(); |
7179 | if (!SecArgType->isIntegerType()) |
7180 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_integer) |
7181 | << "second" << SecArgType << Arg1->getSourceRange(); |
7182 | |
7183 | |
7184 | TheCall->setType(FirstArgType); |
7185 | return false; |
7186 | } |
7187 | |
7188 | if (BuiltinID == AArch64::BI__builtin_arm_addg) { |
7189 | if (checkArgCount(*this, TheCall, 2)) |
7190 | return true; |
7191 | |
7192 | Expr *Arg0 = TheCall->getArg(0); |
7193 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7194 | if (FirstArg.isInvalid()) |
7195 | return true; |
7196 | QualType FirstArgType = FirstArg.get()->getType(); |
7197 | if (!FirstArgType->isAnyPointerType()) |
7198 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7199 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7200 | TheCall->setArg(0, FirstArg.get()); |
7201 | |
7202 | |
7203 | TheCall->setType(FirstArgType); |
7204 | |
7205 | |
7206 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
7207 | } |
7208 | |
7209 | if (BuiltinID == AArch64::BI__builtin_arm_gmi) { |
7210 | if (checkArgCount(*this, TheCall, 2)) |
7211 | return true; |
7212 | Expr *Arg0 = TheCall->getArg(0); |
7213 | Expr *Arg1 = TheCall->getArg(1); |
7214 | |
7215 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7216 | if (FirstArg.isInvalid()) |
7217 | return true; |
7218 | QualType FirstArgType = FirstArg.get()->getType(); |
7219 | if (!FirstArgType->isAnyPointerType()) |
7220 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7221 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7222 | |
7223 | QualType SecArgType = Arg1->getType(); |
7224 | if (!SecArgType->isIntegerType()) |
7225 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_integer) |
7226 | << "second" << SecArgType << Arg1->getSourceRange(); |
7227 | TheCall->setType(Context.IntTy); |
7228 | return false; |
7229 | } |
7230 | |
7231 | if (BuiltinID == AArch64::BI__builtin_arm_ldg || |
7232 | BuiltinID == AArch64::BI__builtin_arm_stg) { |
7233 | if (checkArgCount(*this, TheCall, 1)) |
7234 | return true; |
7235 | Expr *Arg0 = TheCall->getArg(0); |
7236 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7237 | if (FirstArg.isInvalid()) |
7238 | return true; |
7239 | |
7240 | QualType FirstArgType = FirstArg.get()->getType(); |
7241 | if (!FirstArgType->isAnyPointerType()) |
7242 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7243 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7244 | TheCall->setArg(0, FirstArg.get()); |
7245 | |
7246 | |
7247 | if (BuiltinID == AArch64::BI__builtin_arm_ldg) |
7248 | TheCall->setType(FirstArgType); |
7249 | return false; |
7250 | } |
7251 | |
7252 | if (BuiltinID == AArch64::BI__builtin_arm_subp) { |
7253 | Expr *ArgA = TheCall->getArg(0); |
7254 | Expr *ArgB = TheCall->getArg(1); |
7255 | |
7256 | ExprResult ArgExprA = DefaultFunctionArrayLvalueConversion(ArgA); |
7257 | ExprResult ArgExprB = DefaultFunctionArrayLvalueConversion(ArgB); |
7258 | |
7259 | if (ArgExprA.isInvalid() || ArgExprB.isInvalid()) |
7260 | return true; |
7261 | |
7262 | QualType ArgTypeA = ArgExprA.get()->getType(); |
7263 | QualType ArgTypeB = ArgExprB.get()->getType(); |
7264 | |
7265 | auto isNull = [&] (Expr *E) -> bool { |
7266 | return E->isNullPointerConstant( |
7267 | Context, Expr::NPC_ValueDependentIsNotNull); }; |
7268 | |
7269 | |
7270 | if (!ArgTypeA->isAnyPointerType() && !isNull(ArgA)) |
7271 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_null_or_pointer) |
7272 | << "first" << ArgTypeA << ArgA->getSourceRange(); |
7273 | |
7274 | if (!ArgTypeB->isAnyPointerType() && !isNull(ArgB)) |
7275 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_null_or_pointer) |
7276 | << "second" << ArgTypeB << ArgB->getSourceRange(); |
7277 | |
7278 | |
7279 | if (ArgTypeA->isAnyPointerType() && !isNull(ArgA) && |
7280 | ArgTypeB->isAnyPointerType() && !isNull(ArgB)) { |
7281 | QualType pointeeA = ArgTypeA->getPointeeType(); |
7282 | QualType pointeeB = ArgTypeB->getPointeeType(); |
7283 | if (!Context.typesAreCompatible( |
7284 | Context.getCanonicalType(pointeeA).getUnqualifiedType(), |
7285 | Context.getCanonicalType(pointeeB).getUnqualifiedType())) { |
7286 | return Diag(TheCall->getBeginLoc(), diag::err_typecheck_sub_ptr_compatible) |
7287 | << ArgTypeA << ArgTypeB << ArgA->getSourceRange() |
7288 | << ArgB->getSourceRange(); |
7289 | } |
7290 | } |
7291 | |
7292 | |
7293 | if (!ArgTypeA->isAnyPointerType() && !ArgTypeB->isAnyPointerType()) |
7294 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_any2arg_pointer) |
7295 | << ArgTypeA << ArgTypeB << ArgA->getSourceRange(); |
7296 | |
7297 | if (isNull(ArgA)) |
7298 | ArgExprA = ImpCastExprToType(ArgExprA.get(), ArgTypeB, CK_NullToPointer); |
7299 | |
7300 | if (isNull(ArgB)) |
7301 | ArgExprB = ImpCastExprToType(ArgExprB.get(), ArgTypeA, CK_NullToPointer); |
7302 | |
7303 | TheCall->setArg(0, ArgExprA.get()); |
7304 | TheCall->setArg(1, ArgExprB.get()); |
7305 | TheCall->setType(Context.LongLongTy); |
7306 | return false; |
7307 | } |
7308 | assert(false && "Unhandled ARM MTE intrinsic"); |
7309 | return true; |
7310 | } |
7311 | |
7312 | |
7313 | |
7314 | bool Sema::SemaBuiltinARMSpecialReg(unsigned BuiltinID, CallExpr *TheCall, |
7315 | int ArgNum, unsigned ExpectedFieldNum, |
7316 | bool AllowName) { |
7317 | bool IsARMBuiltin = BuiltinID == ARM::BI__builtin_arm_rsr64 || |
7318 | BuiltinID == ARM::BI__builtin_arm_wsr64 || |
7319 | BuiltinID == ARM::BI__builtin_arm_rsr || |
7320 | BuiltinID == ARM::BI__builtin_arm_rsrp || |
7321 | BuiltinID == ARM::BI__builtin_arm_wsr || |
7322 | BuiltinID == ARM::BI__builtin_arm_wsrp; |
7323 | bool IsAArch64Builtin = BuiltinID == AArch64::BI__builtin_arm_rsr64 || |
7324 | BuiltinID == AArch64::BI__builtin_arm_wsr64 || |
7325 | BuiltinID == AArch64::BI__builtin_arm_rsr || |
7326 | BuiltinID == AArch64::BI__builtin_arm_rsrp || |
7327 | BuiltinID == AArch64::BI__builtin_arm_wsr || |
7328 | BuiltinID == AArch64::BI__builtin_arm_wsrp; |
7329 | assert((IsARMBuiltin || IsAArch64Builtin) && "Unexpected ARM builtin."); |
7330 | |
7331 | |
7332 | Expr *Arg = TheCall->getArg(ArgNum); |
7333 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7334 | return false; |
7335 | |
7336 | |
7337 | if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts())) |
7338 | return Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal) |
7339 | << Arg->getSourceRange(); |
7340 | |
7341 | |
7342 | StringRef Reg = cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString(); |
7343 | SmallVector<StringRef, 6> Fields; |
7344 | Reg.split(Fields, ":"); |
7345 | |
7346 | if (Fields.size() != ExpectedFieldNum && !(AllowName && Fields.size() == 1)) |
7347 | return Diag(TheCall->getBeginLoc(), diag::err_arm_invalid_specialreg) |
7348 | << Arg->getSourceRange(); |
7349 | |
7350 | |
7351 | |
7352 | |
7353 | |
7354 | if (Fields.size() > 1) { |
7355 | bool FiveFields = Fields.size() == 5; |
7356 | |
7357 | bool ValidString = true; |
7358 | if (IsARMBuiltin) { |
7359 | ValidString &= Fields[0].startswith_insensitive("cp") || |
7360 | Fields[0].startswith_insensitive("p"); |
7361 | if (ValidString) |
7362 | Fields[0] = Fields[0].drop_front( |
7363 | Fields[0].startswith_insensitive("cp") ? 2 : 1); |
7364 | |
7365 | ValidString &= Fields[2].startswith_insensitive("c"); |
7366 | if (ValidString) |
7367 | Fields[2] = Fields[2].drop_front(1); |
7368 | |
7369 | if (FiveFields) { |
7370 | ValidString &= Fields[3].startswith_insensitive("c"); |
7371 | if (ValidString) |
7372 | Fields[3] = Fields[3].drop_front(1); |
7373 | } |
7374 | } |
7375 | |
7376 | SmallVector<int, 5> Ranges; |
7377 | if (FiveFields) |
7378 | Ranges.append({IsAArch64Builtin ? 1 : 15, 7, 15, 15, 7}); |
7379 | else |
7380 | Ranges.append({15, 7, 15}); |
7381 | |
7382 | for (unsigned i=0; i<Fields.size(); ++i) { |
7383 | int IntField; |
7384 | ValidString &= !Fields[i].getAsInteger(10, IntField); |
7385 | ValidString &= (IntField >= 0 && IntField <= Ranges[i]); |
7386 | } |
7387 | |
7388 | if (!ValidString) |
7389 | return Diag(TheCall->getBeginLoc(), diag::err_arm_invalid_specialreg) |
7390 | << Arg->getSourceRange(); |
7391 | } else if (IsAArch64Builtin && Fields.size() == 1) { |
7392 | |
7393 | |
7394 | |
7395 | |
7396 | |
7397 | |
7398 | if (TheCall->getNumArgs() != 2) |
7399 | return false; |
7400 | |
7401 | std::string RegLower = Reg.lower(); |
7402 | if (RegLower != "spsel" && RegLower != "daifset" && RegLower != "daifclr" && |
7403 | RegLower != "pan" && RegLower != "uao") |
7404 | return false; |
7405 | |
7406 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
7407 | } |
7408 | |
7409 | return false; |
7410 | } |
7411 | |
7412 | |
7413 | |
7414 | |
7415 | |
7416 | bool Sema::SemaBuiltinPPCMMACall(CallExpr *TheCall, const char *TypeStr) { |
7417 | |
7418 | assert((TypeStr[0] != '\0') && |
7419 | "Invalid types in PPC MMA builtin declaration"); |
7420 | |
7421 | unsigned Mask = 0; |
7422 | unsigned ArgNum = 0; |
7423 | |
7424 | |
7425 | |
7426 | QualType type = DecodePPCMMATypeFromStr(Context, TypeStr, Mask); |
7427 | TheCall->setType(type); |
7428 | |
7429 | while (*TypeStr != '\0') { |
7430 | Mask = 0; |
7431 | QualType ExpectedType = DecodePPCMMATypeFromStr(Context, TypeStr, Mask); |
7432 | if (ArgNum >= TheCall->getNumArgs()) { |
7433 | ArgNum++; |
7434 | break; |
7435 | } |
7436 | |
7437 | Expr *Arg = TheCall->getArg(ArgNum); |
7438 | QualType ArgType = Arg->getType(); |
7439 | |
7440 | if ((ExpectedType->isVoidPointerType() && !ArgType->isPointerType()) || |
7441 | (!ExpectedType->isVoidPointerType() && |
7442 | ArgType.getCanonicalType() != ExpectedType)) |
7443 | return Diag(Arg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
7444 | << ArgType << ExpectedType << 1 << 0 << 0; |
7445 | |
7446 | |
7447 | |
7448 | |
7449 | if (Mask != 0 && |
7450 | SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, Mask, true)) |
7451 | return true; |
7452 | |
7453 | ArgNum++; |
7454 | } |
7455 | |
7456 | |
7457 | |
7458 | |
7459 | |
7460 | while (*TypeStr != '\0') { |
7461 | (void) DecodePPCMMATypeFromStr(Context, TypeStr, Mask); |
7462 | ArgNum++; |
7463 | } |
7464 | if (checkArgCount(*this, TheCall, ArgNum)) |
7465 | return true; |
7466 | |
7467 | return false; |
7468 | } |
7469 | |
7470 | |
7471 | |
7472 | |
7473 | bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) { |
7474 | if (!Context.getTargetInfo().hasSjLjLowering()) |
7475 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_longjmp_unsupported) |
7476 | << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc()); |
7477 | |
7478 | Expr *Arg = TheCall->getArg(1); |
7479 | llvm::APSInt Result; |
7480 | |
7481 | |
7482 | if (SemaBuiltinConstantArg(TheCall, 1, Result)) |
7483 | return true; |
7484 | |
7485 | if (Result != 1) |
7486 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_longjmp_invalid_val) |
7487 | << SourceRange(Arg->getBeginLoc(), Arg->getEndLoc()); |
7488 | |
7489 | return false; |
7490 | } |
7491 | |
7492 | |
7493 | |
7494 | bool Sema::SemaBuiltinSetjmp(CallExpr *TheCall) { |
7495 | if (!Context.getTargetInfo().hasSjLjLowering()) |
7496 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_setjmp_unsupported) |
7497 | << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc()); |
7498 | return false; |
7499 | } |
7500 | |
7501 | namespace { |
7502 | |
7503 | class UncoveredArgHandler { |
7504 | enum { Unknown = -1, AllCovered = -2 }; |
7505 | |
7506 | signed FirstUncoveredArg = Unknown; |
7507 | SmallVector<const Expr *, 4> DiagnosticExprs; |
7508 | |
7509 | public: |
7510 | UncoveredArgHandler() = default; |
7511 | |
7512 | bool hasUncoveredArg() const { |
7513 | return (FirstUncoveredArg >= 0); |
7514 | } |
7515 | |
7516 | unsigned getUncoveredArg() const { |
7517 | assert(hasUncoveredArg() && "no uncovered argument"); |
7518 | return FirstUncoveredArg; |
7519 | } |
7520 | |
7521 | void setAllCovered() { |
7522 | |
7523 | |
7524 | DiagnosticExprs.clear(); |
7525 | FirstUncoveredArg = AllCovered; |
7526 | } |
7527 | |
7528 | void Update(signed NewFirstUncoveredArg, const Expr *StrExpr) { |
7529 | assert(NewFirstUncoveredArg >= 0 && "Outside range"); |
7530 | |
7531 | |
7532 | if (FirstUncoveredArg == AllCovered) |
7533 | return; |
7534 | |
7535 | |
7536 | |
7537 | if (NewFirstUncoveredArg == FirstUncoveredArg) |
7538 | DiagnosticExprs.push_back(StrExpr); |
7539 | else if (NewFirstUncoveredArg > FirstUncoveredArg) { |
7540 | DiagnosticExprs.clear(); |
7541 | DiagnosticExprs.push_back(StrExpr); |
7542 | FirstUncoveredArg = NewFirstUncoveredArg; |
7543 | } |
7544 | } |
7545 | |
7546 | void Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr); |
7547 | }; |
7548 | |
7549 | enum StringLiteralCheckType { |
7550 | SLCT_NotALiteral, |
7551 | SLCT_UncheckedLiteral, |
7552 | SLCT_CheckedLiteral |
7553 | }; |
7554 | |
7555 | } |
7556 | |
7557 | static void sumOffsets(llvm::APSInt &Offset, llvm::APSInt Addend, |
7558 | BinaryOperatorKind BinOpKind, |
7559 | bool AddendIsRight) { |
7560 | unsigned BitWidth = Offset.getBitWidth(); |
7561 | unsigned AddendBitWidth = Addend.getBitWidth(); |
7562 | |
7563 | if (Addend.isUnsigned()) { |
7564 | Addend = Addend.zext(++AddendBitWidth); |
7565 | Addend.setIsSigned(true); |
7566 | } |
7567 | |
7568 | if (AddendBitWidth > BitWidth) { |
7569 | Offset = Offset.sext(AddendBitWidth); |
7570 | BitWidth = AddendBitWidth; |
7571 | } else if (BitWidth > AddendBitWidth) { |
7572 | Addend = Addend.sext(BitWidth); |
7573 | } |
7574 | |
7575 | bool Ov = false; |
7576 | llvm::APSInt ResOffset = Offset; |
7577 | if (BinOpKind == BO_Add) |
7578 | ResOffset = Offset.sadd_ov(Addend, Ov); |
7579 | else { |
7580 | assert(AddendIsRight && BinOpKind == BO_Sub && |
7581 | "operator must be add or sub with addend on the right"); |
7582 | ResOffset = Offset.ssub_ov(Addend, Ov); |
7583 | } |
7584 | |
7585 | |
7586 | |
7587 | if (Ov) { |
7588 | assert(BitWidth <= std::numeric_limits<unsigned>::max() / 2 && |
7589 | "index (intermediate) result too big"); |
7590 | Offset = Offset.sext(2 * BitWidth); |
7591 | sumOffsets(Offset, Addend, BinOpKind, AddendIsRight); |
7592 | return; |
7593 | } |
7594 | |
7595 | Offset = ResOffset; |
7596 | } |
7597 | |
7598 | namespace { |
7599 | |
7600 | |
7601 | |
7602 | |
7603 | class FormatStringLiteral { |
7604 | const StringLiteral *FExpr; |
7605 | int64_t Offset; |
7606 | |
7607 | public: |
7608 | FormatStringLiteral(const StringLiteral *fexpr, int64_t Offset = 0) |
7609 | : FExpr(fexpr), Offset(Offset) {} |
7610 | |
7611 | StringRef getString() const { |
7612 | return FExpr->getString().drop_front(Offset); |
7613 | } |
7614 | |
7615 | unsigned getByteLength() const { |
7616 | return FExpr->getByteLength() - getCharByteWidth() * Offset; |
7617 | } |
7618 | |
7619 | unsigned getLength() const { return FExpr->getLength() - Offset; } |
7620 | unsigned getCharByteWidth() const { return FExpr->getCharByteWidth(); } |
7621 | |
7622 | StringLiteral::StringKind getKind() const { return FExpr->getKind(); } |
7623 | |
7624 | QualType getType() const { return FExpr->getType(); } |
7625 | |
7626 | bool isAscii() const { return FExpr->isAscii(); } |
7627 | bool isWide() const { return FExpr->isWide(); } |
7628 | bool isUTF8() const { return FExpr->isUTF8(); } |
7629 | bool isUTF16() const { return FExpr->isUTF16(); } |
7630 | bool isUTF32() const { return FExpr->isUTF32(); } |
7631 | bool isPascal() const { return FExpr->isPascal(); } |
7632 | |
7633 | SourceLocation getLocationOfByte( |
7634 | unsigned ByteNo, const SourceManager &SM, const LangOptions &Features, |
7635 | const TargetInfo &Target, unsigned *StartToken = nullptr, |
7636 | unsigned *StartTokenByteOffset = nullptr) const { |
7637 | return FExpr->getLocationOfByte(ByteNo + Offset, SM, Features, Target, |
7638 | StartToken, StartTokenByteOffset); |
7639 | } |
7640 | |
7641 | SourceLocation getBeginLoc() const LLVM_READONLY { |
7642 | return FExpr->getBeginLoc().getLocWithOffset(Offset); |
7643 | } |
7644 | |
7645 | SourceLocation getEndLoc() const LLVM_READONLY { return FExpr->getEndLoc(); } |
7646 | }; |
7647 | |
7648 | } |
7649 | |
7650 | static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, |
7651 | const Expr *OrigFormatExpr, |
7652 | ArrayRef<const Expr *> Args, |
7653 | bool HasVAListArg, unsigned format_idx, |
7654 | unsigned firstDataArg, |
7655 | Sema::FormatStringType Type, |
7656 | bool inFunctionCall, |
7657 | Sema::VariadicCallType CallType, |
7658 | llvm::SmallBitVector &CheckedVarArgs, |
7659 | UncoveredArgHandler &UncoveredArg, |
7660 | bool IgnoreStringsWithoutSpecifiers); |
7661 | |
7662 | |
7663 | |
7664 | |
7665 | |
7666 | static StringLiteralCheckType |
7667 | checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args, |
7668 | bool HasVAListArg, unsigned format_idx, |
7669 | unsigned firstDataArg, Sema::FormatStringType Type, |
7670 | Sema::VariadicCallType CallType, bool InFunctionCall, |
7671 | llvm::SmallBitVector &CheckedVarArgs, |
7672 | UncoveredArgHandler &UncoveredArg, |
7673 | llvm::APSInt Offset, |
7674 | bool IgnoreStringsWithoutSpecifiers = false) { |
7675 | if (S.isConstantEvaluated()) |
7676 | return SLCT_NotALiteral; |
7677 | tryAgain: |
7678 | assert(Offset.isSigned() && "invalid offset"); |
7679 | |
7680 | if (E->isTypeDependent() || E->isValueDependent()) |
7681 | return SLCT_NotALiteral; |
7682 | |
7683 | E = E->IgnoreParenCasts(); |
7684 | |
7685 | if (E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull)) |
7686 | |
7687 | |
7688 | |
7689 | |
7690 | return SLCT_UncheckedLiteral; |
7691 | |
7692 | switch (E->getStmtClass()) { |
7693 | case Stmt::BinaryConditionalOperatorClass: |
7694 | case Stmt::ConditionalOperatorClass: { |
7695 | |
7696 | |
7697 | const AbstractConditionalOperator *C = |
7698 | cast<AbstractConditionalOperator>(E); |
7699 | |
7700 | |
7701 | |
7702 | |
7703 | bool CheckLeft = true, CheckRight = true; |
7704 | |
7705 | bool Cond; |
7706 | if (C->getCond()->EvaluateAsBooleanCondition(Cond, S.getASTContext(), |
7707 | S.isConstantEvaluated())) { |
7708 | if (Cond) |
7709 | CheckRight = false; |
7710 | else |
7711 | CheckLeft = false; |
7712 | } |
7713 | |
7714 | |
7715 | |
7716 | |
7717 | |
7718 | StringLiteralCheckType Left; |
7719 | if (!CheckLeft) |
7720 | Left = SLCT_UncheckedLiteral; |
7721 | else { |
7722 | Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, |
7723 | HasVAListArg, format_idx, firstDataArg, |
7724 | Type, CallType, InFunctionCall, |
7725 | CheckedVarArgs, UncoveredArg, Offset, |
7726 | IgnoreStringsWithoutSpecifiers); |
7727 | if (Left == SLCT_NotALiteral || !CheckRight) { |
7728 | return Left; |
7729 | } |
7730 | } |
7731 | |
7732 | StringLiteralCheckType Right = checkFormatStringExpr( |
7733 | S, C->getFalseExpr(), Args, HasVAListArg, format_idx, firstDataArg, |
7734 | Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset, |
7735 | IgnoreStringsWithoutSpecifiers); |
7736 | |
7737 | return (CheckLeft && Left < Right) ? Left : Right; |
7738 | } |
7739 | |
7740 | case Stmt::ImplicitCastExprClass: |
7741 | E = cast<ImplicitCastExpr>(E)->getSubExpr(); |
7742 | goto tryAgain; |
7743 | |
7744 | case Stmt::OpaqueValueExprClass: |
7745 | if (const Expr *src = cast<OpaqueValueExpr>(E)->getSourceExpr()) { |
7746 | E = src; |
7747 | goto tryAgain; |
7748 | } |
7749 | return SLCT_NotALiteral; |
7750 | |
7751 | case Stmt::PredefinedExprClass: |
7752 | |
7753 | |
7754 | |
7755 | return SLCT_UncheckedLiteral; |
7756 | |
7757 | case Stmt::DeclRefExprClass: { |
7758 | const DeclRefExpr *DR = cast<DeclRefExpr>(E); |
7759 | |
7760 | |
7761 | |
7762 | if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl())) { |
7763 | bool isConstant = false; |
7764 | QualType T = DR->getType(); |
7765 | |
7766 | if (const ArrayType *AT = S.Context.getAsArrayType(T)) { |
7767 | isConstant = AT->getElementType().isConstant(S.Context); |
7768 | } else if (const PointerType *PT = T->getAs<PointerType>()) { |
7769 | isConstant = T.isConstant(S.Context) && |
7770 | PT->getPointeeType().isConstant(S.Context); |
7771 | } else if (T->isObjCObjectPointerType()) { |
7772 | |
7773 | |
7774 | isConstant = T.isConstant(S.Context); |
7775 | } |
7776 | |
7777 | if (isConstant) { |
7778 | if (const Expr *Init = VD->getAnyInitializer()) { |
7779 | |
7780 | if (const InitListExpr *InitList = dyn_cast<InitListExpr>(Init)) { |
7781 | if (InitList->isStringLiteralInit()) |
7782 | Init = InitList->getInit(0)->IgnoreParenImpCasts(); |
7783 | } |
7784 | return checkFormatStringExpr(S, Init, Args, |
7785 | HasVAListArg, format_idx, |
7786 | firstDataArg, Type, CallType, |
7787 | false, CheckedVarArgs, |
7788 | UncoveredArg, Offset); |
7789 | } |
7790 | } |
7791 | |
7792 | |
7793 | |
7794 | |
7795 | |
7796 | |
7797 | |
7798 | |
7799 | |
7800 | |
7801 | |
7802 | |
7803 | |
7804 | |
7805 | |
7806 | if (HasVAListArg) { |
7807 | if (const ParmVarDecl *PV = dyn_cast<ParmVarDecl>(VD)) { |
7808 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(PV->getDeclContext())) { |
7809 | int PVIndex = PV->getFunctionScopeIndex() + 1; |
7810 | for (const auto *PVFormat : ND->specific_attrs<FormatAttr>()) { |
7811 | |
7812 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ND)) |
7813 | if (MD->isInstance()) |
7814 | ++PVIndex; |
7815 | |
7816 | |
7817 | if (PVIndex == PVFormat->getFormatIdx() && |
7818 | Type == S.GetFormatStringType(PVFormat)) |
7819 | return SLCT_UncheckedLiteral; |
7820 | } |
7821 | } |
7822 | } |
7823 | } |
7824 | } |
7825 | |
7826 | return SLCT_NotALiteral; |
7827 | } |
7828 | |
7829 | case Stmt::CallExprClass: |
7830 | case Stmt::CXXMemberCallExprClass: { |
7831 | const CallExpr *CE = cast<CallExpr>(E); |
7832 | if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(CE->getCalleeDecl())) { |
7833 | bool IsFirst = true; |
7834 | StringLiteralCheckType CommonResult; |
7835 | for (const auto *FA : ND->specific_attrs<FormatArgAttr>()) { |
7836 | const Expr *Arg = CE->getArg(FA->getFormatIdx().getASTIndex()); |
7837 | StringLiteralCheckType Result = checkFormatStringExpr( |
7838 | S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, |
7839 | CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset, |
7840 | IgnoreStringsWithoutSpecifiers); |
7841 | if (IsFirst) { |
7842 | CommonResult = Result; |
7843 | IsFirst = false; |
7844 | } |
7845 | } |
7846 | if (!IsFirst) |
7847 | return CommonResult; |
7848 | |
7849 | if (const auto *FD = dyn_cast<FunctionDecl>(ND)) { |
7850 | unsigned BuiltinID = FD->getBuiltinID(); |
7851 | if (BuiltinID == Builtin::BI__builtin___CFStringMakeConstantString || |
7852 | BuiltinID == Builtin::BI__builtin___NSStringMakeConstantString) { |
7853 | const Expr *Arg = CE->getArg(0); |
7854 | return checkFormatStringExpr(S, Arg, Args, |
7855 | HasVAListArg, format_idx, |
7856 | firstDataArg, Type, CallType, |
7857 | InFunctionCall, CheckedVarArgs, |
7858 | UncoveredArg, Offset, |
7859 | IgnoreStringsWithoutSpecifiers); |
7860 | } |
7861 | } |
7862 | } |
7863 | |
7864 | return SLCT_NotALiteral; |
7865 | } |
7866 | case Stmt::ObjCMessageExprClass: { |
7867 | const auto *ME = cast<ObjCMessageExpr>(E); |
7868 | if (const auto *MD = ME->getMethodDecl()) { |
7869 | if (const auto *FA = MD->getAttr<FormatArgAttr>()) { |
7870 | |
7871 | |
7872 | |
7873 | |
7874 | |
7875 | |
7876 | |
7877 | const ObjCInterfaceDecl *IFace; |
7878 | if (MD->isInstanceMethod() && (IFace = MD->getClassInterface()) && |
7879 | IFace->getIdentifier()->isStr("NSBundle") && |
7880 | MD->getSelector().isKeywordSelector( |
7881 | {"localizedStringForKey", "value", "table"})) { |
7882 | IgnoreStringsWithoutSpecifiers = true; |
7883 | } |
7884 | |
7885 | const Expr *Arg = ME->getArg(FA->getFormatIdx().getASTIndex()); |
7886 | return checkFormatStringExpr( |
7887 | S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, |
7888 | CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset, |
7889 | IgnoreStringsWithoutSpecifiers); |
7890 | } |
7891 | } |
7892 | |
7893 | return SLCT_NotALiteral; |
7894 | } |
7895 | case Stmt::ObjCStringLiteralClass: |
7896 | case Stmt::StringLiteralClass: { |
7897 | const StringLiteral *StrE = nullptr; |
7898 | |
7899 | if (const ObjCStringLiteral *ObjCFExpr = dyn_cast<ObjCStringLiteral>(E)) |
7900 | StrE = ObjCFExpr->getString(); |
7901 | else |
7902 | StrE = cast<StringLiteral>(E); |
7903 | |
7904 | if (StrE) { |
7905 | if (Offset.isNegative() || Offset > StrE->getLength()) { |
7906 | |
7907 | |
7908 | return SLCT_NotALiteral; |
7909 | } |
7910 | FormatStringLiteral FStr(StrE, Offset.sextOrTrunc(64).getSExtValue()); |
7911 | CheckFormatString(S, &FStr, E, Args, HasVAListArg, format_idx, |
7912 | firstDataArg, Type, InFunctionCall, CallType, |
7913 | CheckedVarArgs, UncoveredArg, |
7914 | IgnoreStringsWithoutSpecifiers); |
7915 | return SLCT_CheckedLiteral; |
7916 | } |
7917 | |
7918 | return SLCT_NotALiteral; |
7919 | } |
7920 | case Stmt::BinaryOperatorClass: { |
7921 | const BinaryOperator *BinOp = cast<BinaryOperator>(E); |
7922 | |
7923 | |
7924 | if (BinOp->isAdditiveOp()) { |
7925 | Expr::EvalResult LResult, RResult; |
7926 | |
7927 | bool LIsInt = BinOp->getLHS()->EvaluateAsInt( |
7928 | LResult, S.Context, Expr::SE_NoSideEffects, S.isConstantEvaluated()); |
7929 | bool RIsInt = BinOp->getRHS()->EvaluateAsInt( |
7930 | RResult, S.Context, Expr::SE_NoSideEffects, S.isConstantEvaluated()); |
7931 | |
7932 | if (LIsInt != RIsInt) { |
7933 | BinaryOperatorKind BinOpKind = BinOp->getOpcode(); |
7934 | |
7935 | if (LIsInt) { |
7936 | if (BinOpKind == BO_Add) { |
7937 | sumOffsets(Offset, LResult.Val.getInt(), BinOpKind, RIsInt); |
7938 | E = BinOp->getRHS(); |
7939 | goto tryAgain; |
7940 | } |
7941 | } else { |
7942 | sumOffsets(Offset, RResult.Val.getInt(), BinOpKind, RIsInt); |
7943 | E = BinOp->getLHS(); |
7944 | goto tryAgain; |
7945 | } |
7946 | } |
7947 | } |
7948 | |
7949 | return SLCT_NotALiteral; |
7950 | } |
7951 | case Stmt::UnaryOperatorClass: { |
7952 | const UnaryOperator *UnaOp = cast<UnaryOperator>(E); |
7953 | auto ASE = dyn_cast<ArraySubscriptExpr>(UnaOp->getSubExpr()); |
7954 | if (UnaOp->getOpcode() == UO_AddrOf && ASE) { |
7955 | Expr::EvalResult IndexResult; |
7956 | if (ASE->getRHS()->EvaluateAsInt(IndexResult, S.Context, |
7957 | Expr::SE_NoSideEffects, |
7958 | S.isConstantEvaluated())) { |
7959 | sumOffsets(Offset, IndexResult.Val.getInt(), BO_Add, |
7960 | true); |
7961 | E = ASE->getBase(); |
7962 | goto tryAgain; |
7963 | } |
7964 | } |
7965 | |
7966 | return SLCT_NotALiteral; |
7967 | } |
7968 | |
7969 | default: |
7970 | return SLCT_NotALiteral; |
7971 | } |
7972 | } |
7973 | |
7974 | Sema::FormatStringType Sema::GetFormatStringType(const FormatAttr *Format) { |
7975 | return llvm::StringSwitch<FormatStringType>(Format->getType()->getName()) |
7976 | .Case("scanf", FST_Scanf) |
7977 | .Cases("printf", "printf0", FST_Printf) |
7978 | .Cases("NSString", "CFString", FST_NSString) |
7979 | .Case("strftime", FST_Strftime) |
7980 | .Case("strfmon", FST_Strfmon) |
7981 | .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) |
7982 | .Case("freebsd_kprintf", FST_FreeBSDKPrintf) |
7983 | .Case("os_trace", FST_OSLog) |
7984 | .Case("os_log", FST_OSLog) |
7985 | .Default(FST_Unknown); |
7986 | } |
7987 | |
7988 | |
7989 | |
7990 | |
7991 | bool Sema::CheckFormatArguments(const FormatAttr *Format, |
7992 | ArrayRef<const Expr *> Args, |
7993 | bool IsCXXMember, |
7994 | VariadicCallType CallType, |
7995 | SourceLocation Loc, SourceRange Range, |
7996 | llvm::SmallBitVector &CheckedVarArgs) { |
7997 | FormatStringInfo FSI; |
7998 | if (getFormatStringInfo(Format, IsCXXMember, &FSI)) |
7999 | return CheckFormatArguments(Args, FSI.HasVAListArg, FSI.FormatIdx, |
8000 | FSI.FirstDataArg, GetFormatStringType(Format), |
8001 | CallType, Loc, Range, CheckedVarArgs); |
8002 | return false; |
8003 | } |
8004 | |
8005 | bool Sema::CheckFormatArguments(ArrayRef<const Expr *> Args, |
8006 | bool HasVAListArg, unsigned format_idx, |
8007 | unsigned firstDataArg, FormatStringType Type, |
8008 | VariadicCallType CallType, |
8009 | SourceLocation Loc, SourceRange Range, |
8010 | llvm::SmallBitVector &CheckedVarArgs) { |
8011 | |
8012 | if (format_idx >= Args.size()) { |
8013 | Diag(Loc, diag::warn_missing_format_string) << Range; |
8014 | return false; |
8015 | } |
8016 | |
8017 | const Expr *OrigFormatExpr = Args[format_idx]->IgnoreParenCasts(); |
8018 | |
8019 | |
8020 | |
8021 | |
8022 | |
8023 | |
8024 | |
8025 | |
8026 | |
8027 | |
8028 | |
8029 | |
8030 | |
8031 | UncoveredArgHandler UncoveredArg; |
8032 | StringLiteralCheckType CT = |
8033 | checkFormatStringExpr(*this, OrigFormatExpr, Args, HasVAListArg, |
8034 | format_idx, firstDataArg, Type, CallType, |
8035 | true, CheckedVarArgs, |
8036 | UncoveredArg, |
8037 | llvm::APSInt(64, false) = 0); |
8038 | |
8039 | |
8040 | if (UncoveredArg.hasUncoveredArg()) { |
8041 | unsigned ArgIdx = UncoveredArg.getUncoveredArg() + firstDataArg; |
8042 | assert(ArgIdx < Args.size() && "ArgIdx outside bounds"); |
8043 | UncoveredArg.Diagnose(*this, true, Args[ArgIdx]); |
8044 | } |
8045 | |
8046 | if (CT != SLCT_NotALiteral) |
8047 | |
8048 | return CT == SLCT_CheckedLiteral; |
8049 | |
8050 | |
8051 | |
8052 | if (Type == FST_Strftime) |
8053 | return false; |
8054 | |
8055 | |
8056 | |
8057 | |
8058 | |
8059 | SourceLocation FormatLoc = Args[format_idx]->getBeginLoc(); |
8060 | if (Type == FST_NSString && SourceMgr.isInSystemMacro(FormatLoc)) |
8061 | return false; |
8062 | |
8063 | |
8064 | |
8065 | if (Args.size() == firstDataArg) { |
8066 | Diag(FormatLoc, diag::warn_format_nonliteral_noargs) |
8067 | << OrigFormatExpr->getSourceRange(); |
8068 | switch (Type) { |
8069 | default: |
8070 | break; |
8071 | case FST_Kprintf: |
8072 | case FST_FreeBSDKPrintf: |
8073 | case FST_Printf: |
8074 | Diag(FormatLoc, diag::note_format_security_fixit) |
8075 | << FixItHint::CreateInsertion(FormatLoc, "\"%s\", "); |
8076 | break; |
8077 | case FST_NSString: |
8078 | Diag(FormatLoc, diag::note_format_security_fixit) |
8079 | << FixItHint::CreateInsertion(FormatLoc, "@\"%@\", "); |
8080 | break; |
8081 | } |
8082 | } else { |
8083 | Diag(FormatLoc, diag::warn_format_nonliteral) |
8084 | << OrigFormatExpr->getSourceRange(); |
8085 | } |
8086 | return false; |
8087 | } |
8088 | |
8089 | namespace { |
8090 | |
8091 | class CheckFormatHandler : public analyze_format_string::FormatStringHandler { |
8092 | protected: |
8093 | Sema &S; |
8094 | const FormatStringLiteral *FExpr; |
8095 | const Expr *OrigFormatExpr; |
8096 | const Sema::FormatStringType FSType; |
8097 | const unsigned FirstDataArg; |
8098 | const unsigned NumDataArgs; |
8099 | const char *Beg; |
8100 | const bool HasVAListArg; |
8101 | ArrayRef<const Expr *> Args; |
8102 | unsigned FormatIdx; |
8103 | llvm::SmallBitVector CoveredArgs; |
8104 | bool usesPositionalArgs = false; |
8105 | bool atFirstArg = true; |
8106 | bool inFunctionCall; |
8107 | Sema::VariadicCallType CallType; |
8108 | llvm::SmallBitVector &CheckedVarArgs; |
8109 | UncoveredArgHandler &UncoveredArg; |
8110 | |
8111 | public: |
8112 | CheckFormatHandler(Sema &s, const FormatStringLiteral *fexpr, |
8113 | const Expr *origFormatExpr, |
8114 | const Sema::FormatStringType type, unsigned firstDataArg, |
8115 | unsigned numDataArgs, const char *beg, bool hasVAListArg, |
8116 | ArrayRef<const Expr *> Args, unsigned formatIdx, |
8117 | bool inFunctionCall, Sema::VariadicCallType callType, |
8118 | llvm::SmallBitVector &CheckedVarArgs, |
8119 | UncoveredArgHandler &UncoveredArg) |
8120 | : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FSType(type), |
8121 | FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), |
8122 | HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), |
8123 | inFunctionCall(inFunctionCall), CallType(callType), |
8124 | CheckedVarArgs(CheckedVarArgs), UncoveredArg(UncoveredArg) { |
8125 | CoveredArgs.resize(numDataArgs); |
8126 | CoveredArgs.reset(); |
8127 | } |
8128 | |
8129 | void DoneProcessing(); |
8130 | |
8131 | void HandleIncompleteSpecifier(const char *startSpecifier, |
8132 | unsigned specifierLen) override; |
8133 | |
8134 | void HandleInvalidLengthModifier( |
8135 | const analyze_format_string::FormatSpecifier &FS, |
8136 | const analyze_format_string::ConversionSpecifier &CS, |
8137 | const char *startSpecifier, unsigned specifierLen, |
8138 | unsigned DiagID); |
8139 | |
8140 | void HandleNonStandardLengthModifier( |
8141 | const analyze_format_string::FormatSpecifier &FS, |
8142 | const char *startSpecifier, unsigned specifierLen); |
8143 | |
8144 | void HandleNonStandardConversionSpecifier( |
8145 | const analyze_format_string::ConversionSpecifier &CS, |
8146 | const char *startSpecifier, unsigned specifierLen); |
8147 | |
8148 | void HandlePosition(const char *startPos, unsigned posLen) override; |
8149 | |
8150 | void HandleInvalidPosition(const char *startSpecifier, |
8151 | unsigned specifierLen, |
8152 | analyze_format_string::PositionContext p) override; |
8153 | |
8154 | void HandleZeroPosition(const char *startPos, unsigned posLen) override; |
8155 | |
8156 | void HandleNullChar(const char *nullCharacter) override; |
8157 | |
8158 | template <typename Range> |
8159 | static void |
8160 | EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, |
8161 | const PartialDiagnostic &PDiag, SourceLocation StringLoc, |
8162 | bool IsStringLocation, Range StringRange, |
8163 | ArrayRef<FixItHint> Fixit = None); |
8164 | |
8165 | protected: |
8166 | bool HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, |
8167 | const char *startSpec, |
8168 | unsigned specifierLen, |
8169 | const char *csStart, unsigned csLen); |
8170 | |
8171 | void HandlePositionalNonpositionalArgs(SourceLocation Loc, |
8172 | const char *startSpec, |
8173 | unsigned specifierLen); |
8174 | |
8175 | SourceRange getFormatStringRange(); |
8176 | CharSourceRange getSpecifierRange(const char *startSpecifier, |
8177 | unsigned specifierLen); |
8178 | SourceLocation getLocationOfByte(const char *x); |
8179 | |
8180 | const Expr *getDataArg(unsigned i) const; |
8181 | |
8182 | bool CheckNumArgs(const analyze_format_string::FormatSpecifier &FS, |
8183 | const analyze_format_string::ConversionSpecifier &CS, |
8184 | const char *startSpecifier, unsigned specifierLen, |
8185 | unsigned argIndex); |
8186 | |
8187 | template <typename Range> |
8188 | void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc, |
8189 | bool IsStringLocation, Range StringRange, |
8190 | ArrayRef<FixItHint> Fixit = None); |
8191 | }; |
8192 | |
8193 | } |
8194 | |
8195 | SourceRange CheckFormatHandler::getFormatStringRange() { |
8196 | return OrigFormatExpr->getSourceRange(); |
8197 | } |
8198 | |
8199 | CharSourceRange CheckFormatHandler:: |
8200 | getSpecifierRange(const char *startSpecifier, unsigned specifierLen) { |
8201 | SourceLocation Start = getLocationOfByte(startSpecifier); |
8202 | SourceLocation End = getLocationOfByte(startSpecifier + specifierLen - 1); |
8203 | |
8204 | |
8205 | End = End.getLocWithOffset(1); |
8206 | |
8207 | return CharSourceRange::getCharRange(Start, End); |
8208 | } |
8209 | |
8210 | SourceLocation CheckFormatHandler::getLocationOfByte(const char *x) { |
8211 | return FExpr->getLocationOfByte(x - Beg, S.getSourceManager(), |
8212 | S.getLangOpts(), S.Context.getTargetInfo()); |
8213 | } |
8214 | |
8215 | void CheckFormatHandler::HandleIncompleteSpecifier(const char *startSpecifier, |
8216 | unsigned specifierLen){ |
8217 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_incomplete_specifier), |
8218 | getLocationOfByte(startSpecifier), |
8219 | true, |
8220 | getSpecifierRange(startSpecifier, specifierLen)); |
8221 | } |
8222 | |
8223 | void CheckFormatHandler::HandleInvalidLengthModifier( |
8224 | const analyze_format_string::FormatSpecifier &FS, |
8225 | const analyze_format_string::ConversionSpecifier &CS, |
8226 | const char *startSpecifier, unsigned specifierLen, unsigned DiagID) { |
8227 | using namespace analyze_format_string; |
8228 | |
8229 | const LengthModifier &LM = FS.getLengthModifier(); |
8230 | CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); |
8231 | |
8232 | |
8233 | Optional<LengthModifier> FixedLM = FS.getCorrectedLengthModifier(); |
8234 | if (FixedLM) { |
8235 | EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), |
8236 | getLocationOfByte(LM.getStart()), |
8237 | true, |
8238 | getSpecifierRange(startSpecifier, specifierLen)); |
8239 | |
8240 | S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) |
8241 | << FixedLM->toString() |
8242 | << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); |
8243 | |
8244 | } else { |
8245 | FixItHint Hint; |
8246 | if (DiagID == diag::warn_format_nonsensical_length) |
8247 | Hint = FixItHint::CreateRemoval(LMRange); |
8248 | |
8249 | EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), |
8250 | getLocationOfByte(LM.getStart()), |
8251 | true, |
8252 | getSpecifierRange(startSpecifier, specifierLen), |
8253 | Hint); |
8254 | } |
8255 | } |
8256 | |
8257 | void CheckFormatHandler::HandleNonStandardLengthModifier( |
8258 | const analyze_format_string::FormatSpecifier &FS, |
8259 | const char *startSpecifier, unsigned specifierLen) { |
8260 | using namespace analyze_format_string; |
8261 | |
8262 | const LengthModifier &LM = FS.getLengthModifier(); |
8263 | CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); |
8264 | |
8265 | |
8266 | Optional<LengthModifier> FixedLM = FS.getCorrectedLengthModifier(); |
8267 | if (FixedLM) { |
8268 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8269 | << LM.toString() << 0, |
8270 | getLocationOfByte(LM.getStart()), |
8271 | true, |
8272 | getSpecifierRange(startSpecifier, specifierLen)); |
8273 | |
8274 | S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) |
8275 | << FixedLM->toString() |
8276 | << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); |
8277 | |
8278 | } else { |
8279 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8280 | << LM.toString() << 0, |
8281 | getLocationOfByte(LM.getStart()), |
8282 | true, |
8283 | getSpecifierRange(startSpecifier, specifierLen)); |
8284 | } |
8285 | } |
8286 | |
8287 | void CheckFormatHandler::HandleNonStandardConversionSpecifier( |
8288 | const analyze_format_string::ConversionSpecifier &CS, |
8289 | const char *startSpecifier, unsigned specifierLen) { |
8290 | using namespace analyze_format_string; |
8291 | |
8292 | |
8293 | Optional<ConversionSpecifier> FixedCS = CS.getStandardSpecifier(); |
8294 | if (FixedCS) { |
8295 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8296 | << CS.toString() << 1, |
8297 | getLocationOfByte(CS.getStart()), |
8298 | true, |
8299 | getSpecifierRange(startSpecifier, specifierLen)); |
8300 | |
8301 | CharSourceRange CSRange = getSpecifierRange(CS.getStart(), CS.getLength()); |
8302 | S.Diag(getLocationOfByte(CS.getStart()), diag::note_format_fix_specifier) |
8303 | << FixedCS->toString() |
8304 | << FixItHint::CreateReplacement(CSRange, FixedCS->toString()); |
8305 | } else { |
8306 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8307 | << CS.toString() << 1, |
8308 | getLocationOfByte(CS.getStart()), |
8309 | true, |
8310 | getSpecifierRange(startSpecifier, specifierLen)); |
8311 | } |
8312 | } |
8313 | |
8314 | void CheckFormatHandler::HandlePosition(const char *startPos, |
8315 | unsigned posLen) { |
8316 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard_positional_arg), |
8317 | getLocationOfByte(startPos), |
8318 | true, |
8319 | getSpecifierRange(startPos, posLen)); |
8320 | } |
8321 | |
8322 | void |
8323 | CheckFormatHandler::HandleInvalidPosition(const char *startPos, unsigned posLen, |
8324 | analyze_format_string::PositionContext p) { |
8325 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_positional_specifier) |
8326 | << (unsigned) p, |
8327 | getLocationOfByte(startPos), true, |
8328 | getSpecifierRange(startPos, posLen)); |
8329 | } |
8330 | |
8331 | void CheckFormatHandler::HandleZeroPosition(const char *startPos, |
8332 | unsigned posLen) { |
8333 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_zero_positional_specifier), |
8334 | getLocationOfByte(startPos), |
8335 | true, |
8336 | getSpecifierRange(startPos, posLen)); |
8337 | } |
8338 | |
8339 | void CheckFormatHandler::HandleNullChar(const char *nullCharacter) { |
8340 | if (!isa<ObjCStringLiteral>(OrigFormatExpr)) { |
8341 | |
8342 | EmitFormatDiagnostic( |
8343 | S.PDiag(diag::warn_printf_format_string_contains_null_char), |
8344 | getLocationOfByte(nullCharacter), true, |
8345 | getFormatStringRange()); |
8346 | } |
8347 | } |
8348 | |
8349 | |
8350 | |
8351 | const Expr *CheckFormatHandler::getDataArg(unsigned i) const { |
8352 | return Args[FirstDataArg + i]; |
8353 | } |
8354 | |
8355 | void CheckFormatHandler::DoneProcessing() { |
8356 | |
8357 | |
8358 | if (!HasVAListArg) { |
8359 | |
8360 | CoveredArgs.flip(); |
8361 | signed notCoveredArg = CoveredArgs.find_first(); |
8362 | if (notCoveredArg >= 0) { |
8363 | assert((unsigned)notCoveredArg < NumDataArgs); |
8364 | UncoveredArg.Update(notCoveredArg, OrigFormatExpr); |
8365 | } else { |
8366 | UncoveredArg.setAllCovered(); |
8367 | } |
8368 | } |
8369 | } |
8370 | |
8371 | void UncoveredArgHandler::Diagnose(Sema &S, bool IsFunctionCall, |
8372 | const Expr *ArgExpr) { |
8373 | assert(hasUncoveredArg() && DiagnosticExprs.size() > 0 && |
8374 | "Invalid state"); |
8375 | |
8376 | if (!ArgExpr) |
8377 | return; |
8378 | |
8379 | SourceLocation Loc = ArgExpr->getBeginLoc(); |
8380 | |
8381 | if (S.getSourceManager().isInSystemMacro(Loc)) |
8382 | return; |
8383 | |
8384 | PartialDiagnostic PDiag = S.PDiag(diag::warn_printf_data_arg_not_used); |
8385 | for (auto E : DiagnosticExprs) |
8386 | PDiag << E->getSourceRange(); |
8387 | |
8388 | CheckFormatHandler::EmitFormatDiagnostic( |
8389 | S, IsFunctionCall, DiagnosticExprs[0], |
8390 | PDiag, Loc, false, |
8391 | DiagnosticExprs[0]->getSourceRange()); |
8392 | } |
8393 | |
8394 | bool |
8395 | CheckFormatHandler::HandleInvalidConversionSpecifier(unsigned argIndex, |
8396 | SourceLocation Loc, |
8397 | const char *startSpec, |
8398 | unsigned specifierLen, |
8399 | const char *csStart, |
8400 | unsigned csLen) { |
8401 | bool keepGoing = true; |
8402 | if (argIndex < NumDataArgs) { |
8403 | |
8404 | |
8405 | CoveredArgs.set(argIndex); |
8406 | } |
8407 | else { |
8408 | |
8409 | |
8410 | |
8411 | |
8412 | |
8413 | keepGoing = false; |
8414 | } |
8415 | |
8416 | StringRef Specifier(csStart, csLen); |
8417 | |
8418 | |
8419 | |
8420 | |
8421 | std::string CodePointStr; |
8422 | if (!llvm::sys::locale::isPrint(*csStart)) { |
8423 | llvm::UTF32 CodePoint; |
8424 | const llvm::UTF8 **B = reinterpret_cast<const llvm::UTF8 **>(&csStart); |
8425 | const llvm::UTF8 *E = |
8426 | reinterpret_cast<const llvm::UTF8 *>(csStart + csLen); |
8427 | llvm::ConversionResult Result = |
8428 | llvm::convertUTF8Sequence(B, E, &CodePoint, llvm::strictConversion); |
8429 | |
8430 | if (Result != llvm::conversionOK) { |
8431 | unsigned char FirstChar = *csStart; |
8432 | CodePoint = (llvm::UTF32)FirstChar; |
8433 | } |
8434 | |
8435 | llvm::raw_string_ostream OS(CodePointStr); |
8436 | if (CodePoint < 256) |
8437 | OS << "\\x" << llvm::format("%02x", CodePoint); |
8438 | else if (CodePoint <= 0xFFFF) |
8439 | OS << "\\u" << llvm::format("%04x", CodePoint); |
8440 | else |
8441 | OS << "\\U" << llvm::format("%08x", CodePoint); |
8442 | OS.flush(); |
8443 | Specifier = CodePointStr; |
8444 | } |
8445 | |
8446 | EmitFormatDiagnostic( |
8447 | S.PDiag(diag::warn_format_invalid_conversion) << Specifier, Loc, |
8448 | true, getSpecifierRange(startSpec, specifierLen)); |
8449 | |
8450 | return keepGoing; |
8451 | } |
8452 | |
8453 | void |
8454 | CheckFormatHandler::HandlePositionalNonpositionalArgs(SourceLocation Loc, |
8455 | const char *startSpec, |
8456 | unsigned specifierLen) { |
8457 | EmitFormatDiagnostic( |
8458 | S.PDiag(diag::warn_format_mix_positional_nonpositional_args), |
8459 | Loc, true, getSpecifierRange(startSpec, specifierLen)); |
8460 | } |
8461 | |
8462 | bool |
8463 | CheckFormatHandler::CheckNumArgs( |
8464 | const analyze_format_string::FormatSpecifier &FS, |
8465 | const analyze_format_string::ConversionSpecifier &CS, |
8466 | const char *startSpecifier, unsigned specifierLen, unsigned argIndex) { |
8467 | |
8468 | if (argIndex >= NumDataArgs) { |
8469 | PartialDiagnostic PDiag = FS.usesPositionalArg() |
8470 | ? (S.PDiag(diag::warn_printf_positional_arg_exceeds_data_args) |
8471 | << (argIndex+1) << NumDataArgs) |
8472 | : S.PDiag(diag::warn_printf_insufficient_data_args); |
8473 | EmitFormatDiagnostic( |
8474 | PDiag, getLocationOfByte(CS.getStart()), true, |
8475 | getSpecifierRange(startSpecifier, specifierLen)); |
8476 | |
8477 | |
8478 | |
8479 | UncoveredArg.setAllCovered(); |
8480 | return false; |
8481 | } |
8482 | return true; |
8483 | } |
8484 | |
8485 | template<typename Range> |
8486 | void CheckFormatHandler::EmitFormatDiagnostic(PartialDiagnostic PDiag, |
8487 | SourceLocation Loc, |
8488 | bool IsStringLocation, |
8489 | Range StringRange, |
8490 | ArrayRef<FixItHint> FixIt) { |
8491 | EmitFormatDiagnostic(S, inFunctionCall, Args[FormatIdx], PDiag, |
8492 | Loc, IsStringLocation, StringRange, FixIt); |
8493 | } |
8494 | |
8495 | |
8496 | |
8497 | |
8498 | |
8499 | |
8500 | |
8501 | |
8502 | |
8503 | |
8504 | |
8505 | |
8506 | |
8507 | |
8508 | |
8509 | |
8510 | |
8511 | |
8512 | |
8513 | |
8514 | |
8515 | |
8516 | |
8517 | |
8518 | |
8519 | |
8520 | |
8521 | |
8522 | template <typename Range> |
8523 | void CheckFormatHandler::EmitFormatDiagnostic( |
8524 | Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, |
8525 | const PartialDiagnostic &PDiag, SourceLocation Loc, bool IsStringLocation, |
8526 | Range StringRange, ArrayRef<FixItHint> FixIt) { |
8527 | if (InFunctionCall) { |
8528 | const Sema::SemaDiagnosticBuilder &D = S.Diag(Loc, PDiag); |
8529 | D << StringRange; |
8530 | D << FixIt; |
8531 | } else { |
8532 | S.Diag(IsStringLocation ? ArgumentExpr->getExprLoc() : Loc, PDiag) |
8533 | << ArgumentExpr->getSourceRange(); |
8534 | |
8535 | const Sema::SemaDiagnosticBuilder &Note = |
8536 | S.Diag(IsStringLocation ? Loc : StringRange.getBegin(), |
8537 | diag::note_format_string_defined); |
8538 | |
8539 | Note << StringRange; |
8540 | Note << FixIt; |
8541 | } |
8542 | } |
8543 | |
8544 | |
8545 | |
8546 | namespace { |
8547 | |
8548 | class CheckPrintfHandler : public CheckFormatHandler { |
8549 | public: |
8550 | CheckPrintfHandler(Sema &s, const FormatStringLiteral *fexpr, |
8551 | const Expr *origFormatExpr, |
8552 | const Sema::FormatStringType type, unsigned firstDataArg, |
8553 | unsigned numDataArgs, bool isObjC, const char *beg, |
8554 | bool hasVAListArg, ArrayRef<const Expr *> Args, |
8555 | unsigned formatIdx, bool inFunctionCall, |
8556 | Sema::VariadicCallType CallType, |
8557 | llvm::SmallBitVector &CheckedVarArgs, |
8558 | UncoveredArgHandler &UncoveredArg) |
8559 | : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, |
8560 | numDataArgs, beg, hasVAListArg, Args, formatIdx, |
8561 | inFunctionCall, CallType, CheckedVarArgs, |
8562 | UncoveredArg) {} |
8563 | |
8564 | bool isObjCContext() const { return FSType == Sema::FST_NSString; } |
8565 | |
8566 | |
8567 | bool allowsObjCArg() const { |
8568 | return FSType == Sema::FST_NSString || FSType == Sema::FST_OSLog || |
8569 | FSType == Sema::FST_OSTrace; |
8570 | } |
8571 | |
8572 | bool HandleInvalidPrintfConversionSpecifier( |
8573 | const analyze_printf::PrintfSpecifier &FS, |
8574 | const char *startSpecifier, |
8575 | unsigned specifierLen) override; |
8576 | |
8577 | void handleInvalidMaskType(StringRef MaskType) override; |
8578 | |
8579 | bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, |
8580 | const char *startSpecifier, |
8581 | unsigned specifierLen) override; |
8582 | bool checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, |
8583 | const char *StartSpecifier, |
8584 | unsigned SpecifierLen, |
8585 | const Expr *E); |
8586 | |
8587 | bool HandleAmount(const analyze_format_string::OptionalAmount &Amt, unsigned k, |
8588 | const char *startSpecifier, unsigned specifierLen); |
8589 | void HandleInvalidAmount(const analyze_printf::PrintfSpecifier &FS, |
8590 | const analyze_printf::OptionalAmount &Amt, |
8591 | unsigned type, |
8592 | const char *startSpecifier, unsigned specifierLen); |
8593 | void HandleFlag(const analyze_printf::PrintfSpecifier &FS, |
8594 | const analyze_printf::OptionalFlag &flag, |
8595 | const char *startSpecifier, unsigned specifierLen); |
8596 | void HandleIgnoredFlag(const analyze_printf::PrintfSpecifier &FS, |
8597 | const analyze_printf::OptionalFlag &ignoredFlag, |
8598 | const analyze_printf::OptionalFlag &flag, |
8599 | const char *startSpecifier, unsigned specifierLen); |
8600 | bool checkForCStrMembers(const analyze_printf::ArgType &AT, |
8601 | const Expr *E); |
8602 | |
8603 | void HandleEmptyObjCModifierFlag(const char *startFlag, |
8604 | unsigned flagLen) override; |
8605 | |
8606 | void HandleInvalidObjCModifierFlag(const char *startFlag, |
8607 | unsigned flagLen) override; |
8608 | |
8609 | void HandleObjCFlagsWithNonObjCConversion(const char *flagsStart, |
8610 | const char *flagsEnd, |
8611 | const char *conversionPosition) |
8612 | override; |
8613 | }; |
8614 | |
8615 | } |
8616 | |
8617 | bool CheckPrintfHandler::HandleInvalidPrintfConversionSpecifier( |
8618 | const analyze_printf::PrintfSpecifier &FS, |
8619 | const char *startSpecifier, |
8620 | unsigned specifierLen) { |
8621 | const analyze_printf::PrintfConversionSpecifier &CS = |
8622 | FS.getConversionSpecifier(); |
8623 | |
8624 | return HandleInvalidConversionSpecifier(FS.getArgIndex(), |
8625 | getLocationOfByte(CS.getStart()), |
8626 | startSpecifier, specifierLen, |
8627 | CS.getStart(), CS.getLength()); |
8628 | } |
8629 | |
8630 | void CheckPrintfHandler::handleInvalidMaskType(StringRef MaskType) { |
8631 | S.Diag(getLocationOfByte(MaskType.data()), diag::err_invalid_mask_type_size); |
8632 | } |
8633 | |
8634 | bool CheckPrintfHandler::HandleAmount( |
8635 | const analyze_format_string::OptionalAmount &Amt, |
8636 | unsigned k, const char *startSpecifier, |
8637 | unsigned specifierLen) { |
8638 | if (Amt.hasDataArgument()) { |
8639 | if (!HasVAListArg) { |
8640 | unsigned argIndex = Amt.getArgIndex(); |
8641 | if (argIndex >= NumDataArgs) { |
8642 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_missing_arg) |
8643 | << k, |
8644 | getLocationOfByte(Amt.getStart()), |
8645 | true, |
8646 | getSpecifierRange(startSpecifier, specifierLen)); |
8647 | |
8648 | |
8649 | return false; |
8650 | } |
8651 | |
8652 | |
8653 | |
8654 | |
8655 | |
8656 | CoveredArgs.set(argIndex); |
8657 | const Expr *Arg = getDataArg(argIndex); |
8658 | if (!Arg) |
8659 | return false; |
8660 | |
8661 | QualType T = Arg->getType(); |
8662 | |
8663 | const analyze_printf::ArgType &AT = Amt.getArgType(S.Context); |
8664 | assert(AT.isValid()); |
8665 | |
8666 | if (!AT.matchesType(S.Context, T)) { |
8667 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_wrong_type) |
8668 | << k << AT.getRepresentativeTypeName(S.Context) |
8669 | << T << Arg->getSourceRange(), |
8670 | getLocationOfByte(Amt.getStart()), |
8671 | true, |
8672 | getSpecifierRange(startSpecifier, specifierLen)); |
8673 | |
8674 | |
8675 | return false; |
8676 | } |
8677 | } |
8678 | } |
8679 | return true; |
8680 | } |
8681 | |
8682 | void CheckPrintfHandler::HandleInvalidAmount( |
8683 | const analyze_printf::PrintfSpecifier &FS, |
8684 | const analyze_printf::OptionalAmount &Amt, |
8685 | unsigned type, |
8686 | const char *startSpecifier, |
8687 | unsigned specifierLen) { |
8688 | const analyze_printf::PrintfConversionSpecifier &CS = |
8689 | FS.getConversionSpecifier(); |
8690 | |
8691 | FixItHint fixit = |
8692 | Amt.getHowSpecified() == analyze_printf::OptionalAmount::Constant |
8693 | ? FixItHint::CreateRemoval(getSpecifierRange(Amt.getStart(), |
8694 | Amt.getConstantLength())) |
8695 | : FixItHint(); |
8696 | |
8697 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_optional_amount) |
8698 | << type << CS.toString(), |
8699 | getLocationOfByte(Amt.getStart()), |
8700 | true, |
8701 | getSpecifierRange(startSpecifier, specifierLen), |
8702 | fixit); |
8703 | } |
8704 | |
8705 | void CheckPrintfHandler::HandleFlag(const analyze_printf::PrintfSpecifier &FS, |
8706 | const analyze_printf::OptionalFlag &flag, |
8707 | const char *startSpecifier, |
8708 | unsigned specifierLen) { |
8709 | |
8710 | const analyze_printf::PrintfConversionSpecifier &CS = |
8711 | FS.getConversionSpecifier(); |
8712 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_flag) |
8713 | << flag.toString() << CS.toString(), |
8714 | getLocationOfByte(flag.getPosition()), |
8715 | true, |
8716 | getSpecifierRange(startSpecifier, specifierLen), |
8717 | FixItHint::CreateRemoval( |
8718 | getSpecifierRange(flag.getPosition(), 1))); |
8719 | } |
8720 | |
8721 | void CheckPrintfHandler::HandleIgnoredFlag( |
8722 | const analyze_printf::PrintfSpecifier &FS, |
8723 | const analyze_printf::OptionalFlag &ignoredFlag, |
8724 | const analyze_printf::OptionalFlag &flag, |
8725 | const char *startSpecifier, |
8726 | unsigned specifierLen) { |
8727 | |
8728 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_ignored_flag) |
8729 | << ignoredFlag.toString() << flag.toString(), |
8730 | getLocationOfByte(ignoredFlag.getPosition()), |
8731 | true, |
8732 | getSpecifierRange(startSpecifier, specifierLen), |
8733 | FixItHint::CreateRemoval( |
8734 | getSpecifierRange(ignoredFlag.getPosition(), 1))); |
8735 | } |
8736 | |
8737 | void CheckPrintfHandler::HandleEmptyObjCModifierFlag(const char *startFlag, |
8738 | unsigned flagLen) { |
8739 | |
8740 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_empty_objc_flag), |
8741 | getLocationOfByte(startFlag), |
8742 | true, |
8743 | getSpecifierRange(startFlag, flagLen)); |
8744 | } |
8745 | |
8746 | void CheckPrintfHandler::HandleInvalidObjCModifierFlag(const char *startFlag, |
8747 | unsigned flagLen) { |
8748 | |
8749 | auto Range = getSpecifierRange(startFlag, flagLen); |
8750 | StringRef flag(startFlag, flagLen); |
8751 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_invalid_objc_flag) << flag, |
8752 | getLocationOfByte(startFlag), |
8753 | true, |
8754 | Range, FixItHint::CreateRemoval(Range)); |
8755 | } |
8756 | |
8757 | void CheckPrintfHandler::HandleObjCFlagsWithNonObjCConversion( |
8758 | const char *flagsStart, const char *flagsEnd, const char *conversionPosition) { |
8759 | |
8760 | auto Range = getSpecifierRange(flagsStart, flagsEnd - flagsStart + 1); |
8761 | auto diag = diag::warn_printf_ObjCflags_without_ObjCConversion; |
8762 | EmitFormatDiagnostic(S.PDiag(diag) << StringRef(conversionPosition, 1), |
8763 | getLocationOfByte(conversionPosition), |
8764 | true, |
8765 | Range, FixItHint::CreateRemoval(Range)); |
8766 | } |
8767 | |
8768 | |
8769 | |
8770 | |
8771 | template<typename MemberKind> |
8772 | static llvm::SmallPtrSet<MemberKind*, 1> |
8773 | CXXRecordMembersNamed(StringRef Name, Sema &S, QualType Ty) { |
8774 | const RecordType *RT = Ty->getAs<RecordType>(); |
8775 | llvm::SmallPtrSet<MemberKind*, 1> Results; |
8776 | |
8777 | if (!RT) |
8778 | return Results; |
8779 | const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl()); |
8780 | if (!RD || !RD->getDefinition()) |
8781 | return Results; |
8782 | |
8783 | LookupResult R(S, &S.Context.Idents.get(Name), SourceLocation(), |
8784 | Sema::LookupMemberName); |
8785 | R.suppressDiagnostics(); |
8786 | |
8787 | |
8788 | |
8789 | if (S.LookupQualifiedName(R, RT->getDecl())) |
8790 | for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) { |
8791 | NamedDecl *decl = (*I)->getUnderlyingDecl(); |
8792 | if (MemberKind *FK = dyn_cast<MemberKind>(decl)) |
8793 | Results.insert(FK); |
8794 | } |
8795 | return Results; |
8796 | } |
8797 | |
8798 | |
8799 | |
8800 | |
8801 | |
8802 | bool Sema::hasCStrMethod(const Expr *E) { |
8803 | using MethodSet = llvm::SmallPtrSet<CXXMethodDecl *, 1>; |
8804 | |
8805 | MethodSet Results = |
8806 | CXXRecordMembersNamed<CXXMethodDecl>("c_str", *this, E->getType()); |
8807 | for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); |
8808 | MI != ME; ++MI) |
8809 | if ((*MI)->getMinRequiredArguments() == 0) |
8810 | return true; |
8811 | return false; |
8812 | } |
8813 | |
8814 | |
8815 | |
8816 | |
8817 | bool CheckPrintfHandler::checkForCStrMembers( |
8818 | const analyze_printf::ArgType &AT, const Expr *E) { |
8819 | using MethodSet = llvm::SmallPtrSet<CXXMethodDecl *, 1>; |
8820 | |
8821 | MethodSet Results = |
8822 | CXXRecordMembersNamed<CXXMethodDecl>("c_str", S, E->getType()); |
8823 | |
8824 | for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); |
8825 | MI != ME; ++MI) { |
8826 | const CXXMethodDecl *Method = *MI; |
8827 | if (Method->getMinRequiredArguments() == 0 && |
8828 | AT.matchesType(S.Context, Method->getReturnType())) { |
8829 | |
8830 | SourceLocation EndLoc = S.getLocForEndOfToken(E->getEndLoc()); |
8831 | S.Diag(E->getBeginLoc(), diag::note_printf_c_str) |
8832 | << "c_str()" << FixItHint::CreateInsertion(EndLoc, ".c_str()"); |
8833 | return true; |
8834 | } |
8835 | } |
8836 | |
8837 | return false; |
8838 | } |
8839 | |
8840 | bool |
8841 | CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier |
8842 | &FS, |
8843 | const char *startSpecifier, |
8844 | unsigned specifierLen) { |
8845 | using namespace analyze_format_string; |
8846 | using namespace analyze_printf; |
8847 | |
8848 | const PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); |
8849 | |
8850 | if (FS.consumesDataArgument()) { |
8851 | if (atFirstArg) { |
8852 | atFirstArg = false; |
8853 | usesPositionalArgs = FS.usesPositionalArg(); |
8854 | } |
8855 | else if (usesPositionalArgs != FS.usesPositionalArg()) { |
8856 | HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), |
8857 | startSpecifier, specifierLen); |
8858 | return false; |
8859 | } |
8860 | } |
8861 | |
8862 | |
8863 | |
8864 | if (!HandleAmount(FS.getFieldWidth(), 0, |
8865 | startSpecifier, specifierLen)) { |
8866 | return false; |
8867 | } |
8868 | |
8869 | if (!HandleAmount(FS.getPrecision(), 1, |
8870 | startSpecifier, specifierLen)) { |
8871 | return false; |
8872 | } |
8873 | |
8874 | if (!CS.consumesDataArgument()) { |
8875 | |
8876 | |
8877 | return true; |
8878 | } |
8879 | |
8880 | |
8881 | unsigned argIndex = FS.getArgIndex(); |
8882 | if (argIndex < NumDataArgs) { |
8883 | |
8884 | |
8885 | |
8886 | CoveredArgs.set(argIndex); |
8887 | } |
8888 | |
8889 | |
8890 | if (CS.getKind() == ConversionSpecifier::FreeBSDbArg || |
8891 | CS.getKind() == ConversionSpecifier::FreeBSDDArg) { |
8892 | |
8893 | if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex + 1)) |
8894 | return false; |
8895 | |
8896 | |
8897 | CoveredArgs.set(argIndex + 1); |
8898 | |
8899 | |
8900 | const Expr *Ex = getDataArg(argIndex); |
8901 | const analyze_printf::ArgType &AT = |
8902 | (CS.getKind() == ConversionSpecifier::FreeBSDbArg) ? |
8903 | ArgType(S.Context.IntTy) : ArgType::CPointerTy; |
8904 | if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType())) |
8905 | EmitFormatDiagnostic( |
8906 | S.PDiag(diag::warn_format_conversion_argument_type_mismatch) |
8907 | << AT.getRepresentativeTypeName(S.Context) << Ex->getType() |
8908 | << false << Ex->getSourceRange(), |
8909 | Ex->getBeginLoc(), false, |
8910 | getSpecifierRange(startSpecifier, specifierLen)); |
8911 | |
8912 | |
8913 | Ex = getDataArg(argIndex + 1); |
8914 | const analyze_printf::ArgType &AT2 = ArgType::CStrTy; |
8915 | if (AT2.isValid() && !AT2.matchesType(S.Context, Ex->getType())) |
8916 | EmitFormatDiagnostic( |
8917 | S.PDiag(diag::warn_format_conversion_argument_type_mismatch) |
8918 | << AT2.getRepresentativeTypeName(S.Context) << Ex->getType() |
8919 | << false << Ex->getSourceRange(), |
8920 | Ex->getBeginLoc(), false, |
8921 | getSpecifierRange(startSpecifier, specifierLen)); |
8922 | |
8923 | return true; |
8924 | } |
8925 | |
8926 | |
8927 | |
8928 | if (!allowsObjCArg() && CS.isObjCArg()) { |
8929 | return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, |
8930 | specifierLen); |
8931 | } |
8932 | |
8933 | |
8934 | if (FSType != Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::PArg) { |
8935 | return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, |
8936 | specifierLen); |
8937 | } |
8938 | |
8939 | |
8940 | if (FSType == Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::nArg) { |
8941 | EmitFormatDiagnostic(S.PDiag(diag::warn_os_log_format_narg), |
8942 | getLocationOfByte(CS.getStart()), |
8943 | false, |
8944 | getSpecifierRange(startSpecifier, specifierLen)); |
8945 | |
8946 | return true; |
8947 | } |
8948 | |
8949 | |
8950 | if (FSType == Sema::FST_OSTrace && |
8951 | (CS.getKind() == ConversionSpecifier::PArg || |
8952 | CS.getKind() == ConversionSpecifier::sArg || |
8953 | CS.getKind() == ConversionSpecifier::ObjCObjArg)) { |
8954 | return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, |
8955 | specifierLen); |
8956 | } |
8957 | |
8958 | |
8959 | if (FSType != Sema::FST_OSLog) { |
8960 | if (FS.isPublic().isSet()) { |
8961 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) |
8962 | << "public", |
8963 | getLocationOfByte(FS.isPublic().getPosition()), |
8964 | false, |
8965 | getSpecifierRange(startSpecifier, specifierLen)); |
8966 | } |
8967 | if (FS.isPrivate().isSet()) { |
8968 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) |
8969 | << "private", |
8970 | getLocationOfByte(FS.isPrivate().getPosition()), |
8971 | false, |
8972 | getSpecifierRange(startSpecifier, specifierLen)); |
8973 | } |
8974 | } |
8975 | |
8976 | |
8977 | if (!FS.hasValidFieldWidth()) { |
8978 | HandleInvalidAmount(FS, FS.getFieldWidth(), 0, |
8979 | startSpecifier, specifierLen); |
8980 | } |
8981 | |
8982 | |
8983 | if (!FS.hasValidPrecision()) { |
8984 | HandleInvalidAmount(FS, FS.getPrecision(), 1, |
8985 | startSpecifier, specifierLen); |
8986 | } |
8987 | |
8988 | |
8989 | if (CS.getKind() == ConversionSpecifier::PArg && |
8990 | FS.getPrecision().getHowSpecified() == OptionalAmount::NotSpecified) { |
8991 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_P_no_precision), |
8992 | getLocationOfByte(startSpecifier), |
8993 | false, |
8994 | getSpecifierRange(startSpecifier, specifierLen)); |
8995 | } |
8996 | |
8997 | |
8998 | if (!FS.hasValidThousandsGroupingPrefix()) |
8999 | HandleFlag(FS, FS.hasThousandsGrouping(), startSpecifier, specifierLen); |
9000 | if (!FS.hasValidLeadingZeros()) |
9001 | HandleFlag(FS, FS.hasLeadingZeros(), startSpecifier, specifierLen); |
9002 | if (!FS.hasValidPlusPrefix()) |
9003 | HandleFlag(FS, FS.hasPlusPrefix(), startSpecifier, specifierLen); |
9004 | if (!FS.hasValidSpacePrefix()) |
9005 | HandleFlag(FS, FS.hasSpacePrefix(), startSpecifier, specifierLen); |
9006 | if (!FS.hasValidAlternativeForm()) |
9007 | HandleFlag(FS, FS.hasAlternativeForm(), startSpecifier, specifierLen); |
9008 | if (!FS.hasValidLeftJustified()) |
9009 | HandleFlag(FS, FS.isLeftJustified(), startSpecifier, specifierLen); |
9010 | |
9011 | |
9012 | if (FS.hasSpacePrefix() && FS.hasPlusPrefix()) |
9013 | HandleIgnoredFlag(FS, FS.hasSpacePrefix(), FS.hasPlusPrefix(), |
9014 | startSpecifier, specifierLen); |
9015 | if (FS.hasLeadingZeros() && FS.isLeftJustified()) |
9016 | HandleIgnoredFlag(FS, FS.hasLeadingZeros(), FS.isLeftJustified(), |
9017 | startSpecifier, specifierLen); |
9018 | |
9019 | |
9020 | if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(), |
9021 | S.getLangOpts())) |
9022 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
9023 | diag::warn_format_nonsensical_length); |
9024 | else if (!FS.hasStandardLengthModifier()) |
9025 | HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); |
9026 | else if (!FS.hasStandardLengthConversionCombination()) |
9027 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
9028 | diag::warn_format_non_standard_conversion_spec); |
9029 | |
9030 | if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) |
9031 | HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); |
9032 | |
9033 | |
9034 | if (HasVAListArg) |
9035 | return true; |
9036 | |
9037 | if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) |
9038 | return false; |
9039 | |
9040 | const Expr *Arg = getDataArg(argIndex); |
9041 | if (!Arg) |
9042 | return true; |
9043 | |
9044 | return checkFormatExpr(FS, startSpecifier, specifierLen, Arg); |
9045 | } |
9046 | |
9047 | static bool requiresParensToAddCast(const Expr *E) { |
9048 | |
9049 | |
9050 | |
9051 | const Expr *Inside = E->IgnoreImpCasts(); |
9052 | if (const PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(Inside)) |
9053 | Inside = POE->getSyntacticForm()->IgnoreImpCasts(); |
9054 | |
9055 | switch (Inside->getStmtClass()) { |
9056 | case Stmt::ArraySubscriptExprClass: |
9057 | case Stmt::CallExprClass: |
9058 | case Stmt::CharacterLiteralClass: |
9059 | case Stmt::CXXBoolLiteralExprClass: |
9060 | case Stmt::DeclRefExprClass: |
9061 | case Stmt::FloatingLiteralClass: |
9062 | case Stmt::IntegerLiteralClass: |
9063 | case Stmt::MemberExprClass: |
9064 | case Stmt::ObjCArrayLiteralClass: |
9065 | case Stmt::ObjCBoolLiteralExprClass: |
9066 | case Stmt::ObjCBoxedExprClass: |
9067 | case Stmt::ObjCDictionaryLiteralClass: |
9068 | case Stmt::ObjCEncodeExprClass: |
9069 | case Stmt::ObjCIvarRefExprClass: |
9070 | case Stmt::ObjCMessageExprClass: |
9071 | case Stmt::ObjCPropertyRefExprClass: |
9072 | case Stmt::ObjCStringLiteralClass: |
9073 | case Stmt::ObjCSubscriptRefExprClass: |
9074 | case Stmt::ParenExprClass: |
9075 | case Stmt::StringLiteralClass: |
9076 | case Stmt::UnaryOperatorClass: |
9077 | return false; |
9078 | default: |
9079 | return true; |
9080 | } |
9081 | } |
9082 | |
9083 | static std::pair<QualType, StringRef> |
9084 | shouldNotPrintDirectly(const ASTContext &Context, |
9085 | QualType IntendedTy, |
9086 | const Expr *E) { |
9087 | |
9088 | QualType TyTy = IntendedTy; |
9089 | while (const TypedefType *UserTy = TyTy->getAs<TypedefType>()) { |
9090 | StringRef Name = UserTy->getDecl()->getName(); |
9091 | QualType CastTy = llvm::StringSwitch<QualType>(Name) |
9092 | .Case("CFIndex", Context.getNSIntegerType()) |
9093 | .Case("NSInteger", Context.getNSIntegerType()) |
9094 | .Case("NSUInteger", Context.getNSUIntegerType()) |
9095 | .Case("SInt32", Context.IntTy) |
9096 | .Case("UInt32", Context.UnsignedIntTy) |
9097 | .Default(QualType()); |
9098 | |
9099 | if (!CastTy.isNull()) |
9100 | return std::make_pair(CastTy, Name); |
9101 | |
9102 | TyTy = UserTy->desugar(); |
9103 | } |
9104 | |
9105 | |
9106 | if (const ParenExpr *PE = dyn_cast<ParenExpr>(E)) |
9107 | return shouldNotPrintDirectly(Context, |
9108 | PE->getSubExpr()->getType(), |
9109 | PE->getSubExpr()); |
9110 | |
9111 | |
9112 | |
9113 | |
9114 | |
9115 | if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) { |
9116 | QualType TrueTy, FalseTy; |
9117 | StringRef TrueName, FalseName; |
9118 | |
9119 | std::tie(TrueTy, TrueName) = |
9120 | shouldNotPrintDirectly(Context, |
9121 | CO->getTrueExpr()->getType(), |
9122 | CO->getTrueExpr()); |
9123 | std::tie(FalseTy, FalseName) = |
9124 | shouldNotPrintDirectly(Context, |
9125 | CO->getFalseExpr()->getType(), |
9126 | CO->getFalseExpr()); |
9127 | |
9128 | if (TrueTy == FalseTy) |
9129 | return std::make_pair(TrueTy, TrueName); |
9130 | else if (TrueTy.isNull()) |
9131 | return std::make_pair(FalseTy, FalseName); |
9132 | else if (FalseTy.isNull()) |
9133 | return std::make_pair(TrueTy, TrueName); |
9134 | } |
9135 | |
9136 | return std::make_pair(QualType(), StringRef()); |
9137 | } |
9138 | |
9139 | |
9140 | |
9141 | |
9142 | static bool |
9143 | isArithmeticArgumentPromotion(Sema &S, const ImplicitCastExpr *ICE) { |
9144 | QualType From = ICE->getSubExpr()->getType(); |
9145 | QualType To = ICE->getType(); |
9146 | |
9147 | |
9148 | if (ICE->getCastKind() == CK_IntegralCast && |
9149 | From->isPromotableIntegerType() && |
9150 | S.Context.getPromotedIntegerType(From) == To) |
9151 | return true; |
9152 | |
9153 | |
9154 | if (const auto *VecTy = From->getAs<ExtVectorType>()) |
9155 | From = VecTy->getElementType(); |
9156 | if (const auto *VecTy = To->getAs<ExtVectorType>()) |
9157 | To = VecTy->getElementType(); |
9158 | |
9159 | return ICE->getCastKind() == CK_FloatingCast && |
9160 | S.Context.getFloatingTypeOrder(From, To) < 0; |
9161 | } |
9162 | |
9163 | bool |
9164 | CheckPrintfHandler::checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, |
9165 | const char *StartSpecifier, |
9166 | unsigned SpecifierLen, |
9167 | const Expr *E) { |
9168 | using namespace analyze_format_string; |
9169 | using namespace analyze_printf; |
9170 | |
9171 | |
9172 | |
9173 | const analyze_printf::ArgType &AT = FS.getArgType(S.Context, isObjCContext()); |
9174 | if (!AT.isValid()) |
9175 | return true; |
9176 | |
9177 | QualType ExprTy = E->getType(); |
9178 | while (const TypeOfExprType *TET = dyn_cast<TypeOfExprType>(ExprTy)) { |
9179 | ExprTy = TET->getUnderlyingExpr()->getType(); |
9180 | } |
9181 | |
9182 | |
9183 | |
9184 | |
9185 | if (FS.getConversionSpecifier().getKind() == ConversionSpecifier::cArg && |
9186 | E->isKnownToHaveBooleanValue()) { |
9187 | const CharSourceRange &CSR = |
9188 | getSpecifierRange(StartSpecifier, SpecifierLen); |
9189 | SmallString<4> FSString; |
9190 | llvm::raw_svector_ostream os(FSString); |
9191 | FS.toString(os); |
9192 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_bool_as_character) |
9193 | << FSString, |
9194 | E->getExprLoc(), false, CSR); |
9195 | return true; |
9196 | } |
9197 | |
9198 | analyze_printf::ArgType::MatchKind Match = AT.matchesType(S.Context, ExprTy); |
9199 | if (Match == analyze_printf::ArgType::Match) |
9200 | return true; |
9201 | |
9202 | |
9203 | |
9204 | |
9205 | |
9206 | |
9207 | if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { |
9208 | if (isArithmeticArgumentPromotion(S, ICE)) { |
9209 | E = ICE->getSubExpr(); |
9210 | ExprTy = E->getType(); |
9211 | |
9212 | |
9213 | |
9214 | |
9215 | if (ICE->getType() == S.Context.IntTy || |
9216 | ICE->getType() == S.Context.UnsignedIntTy) { |
9217 | |
9218 | const analyze_printf::ArgType::MatchKind ImplicitMatch = |
9219 | AT.matchesType(S.Context, ExprTy); |
9220 | if (ImplicitMatch == analyze_printf::ArgType::Match) |
9221 | return true; |
9222 | if (ImplicitMatch == ArgType::NoMatchPedantic || |
9223 | ImplicitMatch == ArgType::NoMatchTypeConfusion) |
9224 | Match = ImplicitMatch; |
9225 | } |
9226 | } |
9227 | } else if (const CharacterLiteral *CL = dyn_cast<CharacterLiteral>(E)) { |
9228 | |
9229 | |
9230 | |
9231 | |
9232 | |
9233 | if (ExprTy == S.Context.IntTy && |
9234 | FS.getLengthModifier().getKind() != LengthModifier::AsChar) |
9235 | if (llvm::isUIntN(S.Context.getCharWidth(), CL->getValue())) |
9236 | ExprTy = S.Context.CharTy; |
9237 | } |
9238 | |
9239 | |
9240 | bool IsEnum = false; |
9241 | if (auto EnumTy = ExprTy->getAs<EnumType>()) { |
9242 | ExprTy = EnumTy->getDecl()->getIntegerType(); |
9243 | IsEnum = true; |
9244 | } |
9245 | |
9246 | |
9247 | |
9248 | |
9249 | QualType IntendedTy = ExprTy; |
9250 | if (isObjCContext() && |
9251 | FS.getConversionSpecifier().getKind() == ConversionSpecifier::CArg) { |
9252 | if (ExprTy->isIntegralOrUnscopedEnumerationType() && |
9253 | !ExprTy->isCharType()) { |
9254 | |
9255 | |
9256 | IntendedTy = S.Context.UnsignedShortTy; |
9257 | |
9258 | |
9259 | |
9260 | if (const IntegerLiteral *IL = dyn_cast<IntegerLiteral>(E)) { |
9261 | const llvm::APInt &V = IL->getValue(); |
9262 | if (V.getActiveBits() <= S.Context.getTypeSize(IntendedTy)) |
9263 | return true; |
9264 | } |
9265 | |
9266 | LookupResult Result(S, &S.Context.Idents.get("unichar"), E->getBeginLoc(), |
9267 | Sema::LookupOrdinaryName); |
9268 | if (S.LookupName(Result, S.getCurScope())) { |
9269 | NamedDecl *ND = Result.getFoundDecl(); |
9270 | if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(ND)) |
9271 | if (TD->getUnderlyingType() == IntendedTy) |
9272 | IntendedTy = S.Context.getTypedefType(TD); |
9273 | } |
9274 | } |
9275 | } |
9276 | |
9277 | |
9278 | |
9279 | bool ShouldNotPrintDirectly = false; StringRef CastTyName; |
9280 | if (S.Context.getTargetInfo().getTriple().isOSDarwin()) { |
9281 | QualType CastTy; |
9282 | std::tie(CastTy, CastTyName) = shouldNotPrintDirectly(S.Context, IntendedTy, E); |
9283 | if (!CastTy.isNull()) { |
9284 | |
9285 | |
9286 | if ((CastTyName == "NSInteger" || CastTyName == "NSUInteger") && |
9287 | (AT.isSizeT() || AT.isPtrdiffT()) && |
9288 | AT.matchesType(S.Context, CastTy)) |
9289 | Match = ArgType::NoMatchPedantic; |
9290 | IntendedTy = CastTy; |
9291 | ShouldNotPrintDirectly = true; |
9292 | } |
9293 | } |
9294 | |
9295 | |
9296 | PrintfSpecifier fixedFS = FS; |
9297 | bool Success = |
9298 | fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, isObjCContext()); |
9299 | |
9300 | if (Success) { |
9301 | |
9302 | SmallString<16> buf; |
9303 | llvm::raw_svector_ostream os(buf); |
9304 | fixedFS.toString(os); |
9305 | |
9306 | CharSourceRange SpecRange = getSpecifierRange(StartSpecifier, SpecifierLen); |
9307 | |
9308 | if (IntendedTy == ExprTy && !ShouldNotPrintDirectly) { |
9309 | unsigned Diag; |
9310 | switch (Match) { |
9311 | case ArgType::Match: llvm_unreachable("expected non-matching"); |
9312 | case ArgType::NoMatchPedantic: |
9313 | Diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; |
9314 | break; |
9315 | case ArgType::NoMatchTypeConfusion: |
9316 | Diag = diag::warn_format_conversion_argument_type_mismatch_confusion; |
9317 | break; |
9318 | case ArgType::NoMatch: |
9319 | Diag = diag::warn_format_conversion_argument_type_mismatch; |
9320 | break; |
9321 | } |
9322 | |
9323 | |
9324 | |
9325 | EmitFormatDiagnostic(S.PDiag(Diag) |
9326 | << AT.getRepresentativeTypeName(S.Context) |
9327 | << IntendedTy << IsEnum << E->getSourceRange(), |
9328 | E->getBeginLoc(), |
9329 | false, SpecRange, |
9330 | FixItHint::CreateReplacement(SpecRange, os.str())); |
9331 | } else { |
9332 | |
9333 | |
9334 | |
9335 | |
9336 | |
9337 | |
9338 | |
9339 | SmallString<16> CastBuf; |
9340 | llvm::raw_svector_ostream CastFix(CastBuf); |
9341 | CastFix << "("; |
9342 | IntendedTy.print(CastFix, S.Context.getPrintingPolicy()); |
9343 | CastFix << ")"; |
9344 | |
9345 | SmallVector<FixItHint,4> Hints; |
9346 | if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly) |
9347 | Hints.push_back(FixItHint::CreateReplacement(SpecRange, os.str())); |
9348 | |
9349 | if (const CStyleCastExpr *CCast = dyn_cast<CStyleCastExpr>(E)) { |
9350 | |
9351 | SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc()); |
9352 | Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str())); |
9353 | |
9354 | } else if (!requiresParensToAddCast(E)) { |
9355 | |
9356 | |
9357 | Hints.push_back( |
9358 | FixItHint::CreateInsertion(E->getBeginLoc(), CastFix.str())); |
9359 | } else { |
9360 | |
9361 | CastFix << "("; |
9362 | Hints.push_back( |
9363 | FixItHint::CreateInsertion(E->getBeginLoc(), CastFix.str())); |
9364 | |
9365 | SourceLocation After = S.getLocForEndOfToken(E->getEndLoc()); |
9366 | Hints.push_back(FixItHint::CreateInsertion(After, ")")); |
9367 | } |
9368 | |
9369 | if (ShouldNotPrintDirectly) { |
9370 | |
9371 | |
9372 | |
9373 | StringRef Name; |
9374 | if (const TypedefType *TypedefTy = dyn_cast<TypedefType>(ExprTy)) |
9375 | Name = TypedefTy->getDecl()->getName(); |
9376 | else |
9377 | Name = CastTyName; |
9378 | unsigned Diag = Match == ArgType::NoMatchPedantic |
9379 | ? diag::warn_format_argument_needs_cast_pedantic |
9380 | : diag::warn_format_argument_needs_cast; |
9381 | EmitFormatDiagnostic(S.PDiag(Diag) << Name << IntendedTy << IsEnum |
9382 | << E->getSourceRange(), |
9383 | E->getBeginLoc(), false, |
9384 | SpecRange, Hints); |
9385 | } else { |
9386 | |
9387 | |
9388 | |
9389 | EmitFormatDiagnostic( |
9390 | S.PDiag(diag::warn_format_conversion_argument_type_mismatch) |
9391 | << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum |
9392 | << E->getSourceRange(), |
9393 | E->getBeginLoc(), false, SpecRange, Hints); |
9394 | } |
9395 | } |
9396 | } else { |
9397 | const CharSourceRange &CSR = getSpecifierRange(StartSpecifier, |
9398 | SpecifierLen); |
9399 | |
9400 | |
9401 | |
9402 | switch (S.isValidVarArgType(ExprTy)) { |
9403 | case Sema::VAK_Valid: |
9404 | case Sema::VAK_ValidInCXX11: { |
9405 | unsigned Diag; |
9406 | switch (Match) { |
9407 | case ArgType::Match: llvm_unreachable("expected non-matching"); |
9408 | case ArgType::NoMatchPedantic: |
9409 | Diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; |
9410 | break; |
9411 | case ArgType::NoMatchTypeConfusion: |
9412 | Diag = diag::warn_format_conversion_argument_type_mismatch_confusion; |
9413 | break; |
9414 | case ArgType::NoMatch: |
9415 | Diag = diag::warn_format_conversion_argument_type_mismatch; |
9416 | break; |
9417 | } |
9418 | |
9419 | EmitFormatDiagnostic( |
9420 | S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy |
9421 | << IsEnum << CSR << E->getSourceRange(), |
9422 | E->getBeginLoc(), false, CSR); |
9423 | break; |
9424 | } |
9425 | case Sema::VAK_Undefined: |
9426 | case Sema::VAK_MSVCUndefined: |
9427 | EmitFormatDiagnostic(S.PDiag(diag::warn_non_pod_vararg_with_format_string) |
9428 | << S.getLangOpts().CPlusPlus11 << ExprTy |
9429 | << CallType |
9430 | << AT.getRepresentativeTypeName(S.Context) << CSR |
9431 | << E->getSourceRange(), |
9432 | E->getBeginLoc(), false, CSR); |
9433 | checkForCStrMembers(AT, E); |
9434 | break; |
9435 | |
9436 | case Sema::VAK_Invalid: |
9437 | if (ExprTy->isObjCObjectType()) |
9438 | EmitFormatDiagnostic( |
9439 | S.PDiag(diag::err_cannot_pass_objc_interface_to_vararg_format) |
9440 | << S.getLangOpts().CPlusPlus11 << ExprTy << CallType |
9441 | << AT.getRepresentativeTypeName(S.Context) << CSR |
9442 | << E->getSourceRange(), |
9443 | E->getBeginLoc(), false, CSR); |
9444 | else |
9445 | |
9446 | |
9447 | S.Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg_format) |
9448 | << isa<InitListExpr>(E) << ExprTy << CallType |
9449 | << AT.getRepresentativeTypeName(S.Context) << E->getSourceRange(); |
9450 | break; |
9451 | } |
9452 | |
9453 | assert(FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && |
9454 | "format string specifier index out of range"); |
9455 | CheckedVarArgs[FirstDataArg + FS.getArgIndex()] = true; |
9456 | } |
9457 | |
9458 | return true; |
9459 | } |
9460 | |
9461 | |
9462 | |
9463 | namespace { |
9464 | |
9465 | class CheckScanfHandler : public CheckFormatHandler { |
9466 | public: |
9467 | CheckScanfHandler(Sema &s, const FormatStringLiteral *fexpr, |
9468 | const Expr *origFormatExpr, Sema::FormatStringType type, |
9469 | unsigned firstDataArg, unsigned numDataArgs, |
9470 | const char *beg, bool hasVAListArg, |
9471 | ArrayRef<const Expr *> Args, unsigned formatIdx, |
9472 | bool inFunctionCall, Sema::VariadicCallType CallType, |
9473 | llvm::SmallBitVector &CheckedVarArgs, |
9474 | UncoveredArgHandler &UncoveredArg) |
9475 | : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, |
9476 | numDataArgs, beg, hasVAListArg, Args, formatIdx, |
9477 | inFunctionCall, CallType, CheckedVarArgs, |
9478 | UncoveredArg) {} |
9479 | |
9480 | bool HandleScanfSpecifier(const analyze_scanf::ScanfSpecifier &FS, |
9481 | const char *startSpecifier, |
9482 | unsigned specifierLen) override; |
9483 | |
9484 | bool HandleInvalidScanfConversionSpecifier( |
9485 | const analyze_scanf::ScanfSpecifier &FS, |
9486 | const char *startSpecifier, |
9487 | unsigned specifierLen) override; |
9488 | |
9489 | void HandleIncompleteScanList(const char *start, const char *end) override; |
9490 | }; |
9491 | |
9492 | } |
9493 | |
9494 | void CheckScanfHandler::HandleIncompleteScanList(const char *start, |
9495 | const char *end) { |
9496 | EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_scanlist_incomplete), |
9497 | getLocationOfByte(end), true, |
9498 | getSpecifierRange(start, end - start)); |
9499 | } |
9500 | |
9501 | bool CheckScanfHandler::HandleInvalidScanfConversionSpecifier( |
9502 | const analyze_scanf::ScanfSpecifier &FS, |
9503 | const char *startSpecifier, |
9504 | unsigned specifierLen) { |
9505 | const analyze_scanf::ScanfConversionSpecifier &CS = |
9506 | FS.getConversionSpecifier(); |
9507 | |
9508 | return HandleInvalidConversionSpecifier(FS.getArgIndex(), |
9509 | getLocationOfByte(CS.getStart()), |
9510 | startSpecifier, specifierLen, |
9511 | CS.getStart(), CS.getLength()); |
9512 | } |
9513 | |
9514 | bool CheckScanfHandler::HandleScanfSpecifier( |
9515 | const analyze_scanf::ScanfSpecifier &FS, |
9516 | const char *startSpecifier, |
9517 | unsigned specifierLen) { |
9518 | using namespace analyze_scanf; |
9519 | using namespace analyze_format_string; |
9520 | |
9521 | const ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); |
9522 | |
9523 | |
9524 | |
9525 | if (FS.consumesDataArgument()) { |
9526 | if (atFirstArg) { |
9527 | atFirstArg = false; |
9528 | usesPositionalArgs = FS.usesPositionalArg(); |
9529 | } |
9530 | else if (usesPositionalArgs != FS.usesPositionalArg()) { |
9531 | HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), |
9532 | startSpecifier, specifierLen); |
9533 | return false; |
9534 | } |
9535 | } |
9536 | |
9537 | |
9538 | const OptionalAmount &Amt = FS.getFieldWidth(); |
9539 | if (Amt.getHowSpecified() == OptionalAmount::Constant) { |
9540 | if (Amt.getConstantAmount() == 0) { |
9541 | const CharSourceRange &R = getSpecifierRange(Amt.getStart(), |
9542 | Amt.getConstantLength()); |
9543 | EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_nonzero_width), |
9544 | getLocationOfByte(Amt.getStart()), |
9545 | true, R, |
9546 | FixItHint::CreateRemoval(R)); |
9547 | } |
9548 | } |
9549 | |
9550 | if (!FS.consumesDataArgument()) { |
9551 | |
9552 | |
9553 | return true; |
9554 | } |
9555 | |
9556 | |
9557 | unsigned argIndex = FS.getArgIndex(); |
9558 | if (argIndex < NumDataArgs) { |
9559 | |
9560 | |
9561 | |
9562 | CoveredArgs.set(argIndex); |
9563 | } |
9564 | |
9565 | |
9566 | if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(), |
9567 | S.getLangOpts())) |
9568 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
9569 | diag::warn_format_nonsensical_length); |
9570 | else if (!FS.hasStandardLengthModifier()) |
9571 | HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); |
9572 | else if (!FS.hasStandardLengthConversionCombination()) |
9573 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
9574 | diag::warn_format_non_standard_conversion_spec); |
9575 | |
9576 | if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) |
9577 | HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); |
9578 | |
9579 | |
9580 | if (HasVAListArg) |
9581 | return true; |
9582 | |
9583 | if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) |
9584 | return false; |
9585 | |
9586 | |
9587 | const Expr *Ex = getDataArg(argIndex); |
9588 | if (!Ex) |
9589 | return true; |
9590 | |
9591 | const analyze_format_string::ArgType &AT = FS.getArgType(S.Context); |
9592 | |
9593 | if (!AT.isValid()) { |
9594 | return true; |
9595 | } |
9596 | |
9597 | analyze_format_string::ArgType::MatchKind Match = |
9598 | AT.matchesType(S.Context, Ex->getType()); |
9599 | bool Pedantic = Match == analyze_format_string::ArgType::NoMatchPedantic; |
9600 | if (Match == analyze_format_string::ArgType::Match) |
9601 | return true; |
9602 | |
9603 | ScanfSpecifier fixedFS = FS; |
9604 | bool Success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), |
9605 | S.getLangOpts(), S.Context); |
9606 | |
9607 | unsigned Diag = |
9608 | Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic |
9609 | : diag::warn_format_conversion_argument_type_mismatch; |
9610 | |
9611 | if (Success) { |
9612 | |
9613 | SmallString<128> buf; |
9614 | llvm::raw_svector_ostream os(buf); |
9615 | fixedFS.toString(os); |
9616 | |
9617 | EmitFormatDiagnostic( |
9618 | S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) |
9619 | << Ex->getType() << false << Ex->getSourceRange(), |
9620 | Ex->getBeginLoc(), |
9621 | false, |
9622 | getSpecifierRange(startSpecifier, specifierLen), |
9623 | FixItHint::CreateReplacement( |
9624 | getSpecifierRange(startSpecifier, specifierLen), os.str())); |
9625 | } else { |
9626 | EmitFormatDiagnostic(S.PDiag(Diag) |
9627 | << AT.getRepresentativeTypeName(S.Context) |
9628 | << Ex->getType() << false << Ex->getSourceRange(), |
9629 | Ex->getBeginLoc(), |
9630 | false, |
9631 | getSpecifierRange(startSpecifier, specifierLen)); |
9632 | } |
9633 | |
9634 | return true; |
9635 | } |
9636 | |
9637 | static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, |
9638 | const Expr *OrigFormatExpr, |
9639 | ArrayRef<const Expr *> Args, |
9640 | bool HasVAListArg, unsigned format_idx, |
9641 | unsigned firstDataArg, |
9642 | Sema::FormatStringType Type, |
9643 | bool inFunctionCall, |
9644 | Sema::VariadicCallType CallType, |
9645 | llvm::SmallBitVector &CheckedVarArgs, |
9646 | UncoveredArgHandler &UncoveredArg, |
9647 | bool IgnoreStringsWithoutSpecifiers) { |
9648 | |
9649 | if (!FExpr->isAscii() && !FExpr->isUTF8()) { |
9650 | CheckFormatHandler::EmitFormatDiagnostic( |
9651 | S, inFunctionCall, Args[format_idx], |
9652 | S.PDiag(diag::warn_format_string_is_wide_literal), FExpr->getBeginLoc(), |
9653 | true, OrigFormatExpr->getSourceRange()); |
9654 | return; |
9655 | } |
9656 | |
9657 | |
9658 | StringRef StrRef = FExpr->getString(); |
9659 | const char *Str = StrRef.data(); |
9660 | |
9661 | const ConstantArrayType *T = |
9662 | S.Context.getAsConstantArrayType(FExpr->getType()); |
9663 | assert(T && "String literal not of constant array type!"); |
9664 | size_t TypeSize = T->getSize().getZExtValue(); |
9665 | size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); |
9666 | const unsigned numDataArgs = Args.size() - firstDataArg; |
9667 | |
9668 | if (IgnoreStringsWithoutSpecifiers && |
9669 | !analyze_format_string::parseFormatStringHasFormattingSpecifiers( |
9670 | Str, Str + StrLen, S.getLangOpts(), S.Context.getTargetInfo())) |
9671 | return; |
9672 | |
9673 | |
9674 | |
9675 | if (TypeSize <= StrRef.size() && |
9676 | StrRef.substr(0, TypeSize).find('\0') == StringRef::npos) { |
9677 | CheckFormatHandler::EmitFormatDiagnostic( |
9678 | S, inFunctionCall, Args[format_idx], |
9679 | S.PDiag(diag::warn_printf_format_string_not_null_terminated), |
9680 | FExpr->getBeginLoc(), |
9681 | true, OrigFormatExpr->getSourceRange()); |
9682 | return; |
9683 | } |
9684 | |
9685 | |
9686 | if (StrLen == 0 && numDataArgs > 0) { |
9687 | CheckFormatHandler::EmitFormatDiagnostic( |
9688 | S, inFunctionCall, Args[format_idx], |
9689 | S.PDiag(diag::warn_empty_format_string), FExpr->getBeginLoc(), |
9690 | true, OrigFormatExpr->getSourceRange()); |
9691 | return; |
9692 | } |
9693 | |
9694 | if (Type == Sema::FST_Printf || Type == Sema::FST_NSString || |
9695 | Type == Sema::FST_FreeBSDKPrintf || Type == Sema::FST_OSLog || |
9696 | Type == Sema::FST_OSTrace) { |
9697 | CheckPrintfHandler H( |
9698 | S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs, |
9699 | (Type == Sema::FST_NSString || Type == Sema::FST_OSTrace), Str, |
9700 | HasVAListArg, Args, format_idx, inFunctionCall, CallType, |
9701 | CheckedVarArgs, UncoveredArg); |
9702 | |
9703 | if (!analyze_format_string::ParsePrintfString(H, Str, Str + StrLen, |
9704 | S.getLangOpts(), |
9705 | S.Context.getTargetInfo(), |
9706 | Type == Sema::FST_FreeBSDKPrintf)) |
9707 | H.DoneProcessing(); |
9708 | } else if (Type == Sema::FST_Scanf) { |
9709 | CheckScanfHandler H(S, FExpr, OrigFormatExpr, Type, firstDataArg, |
9710 | numDataArgs, Str, HasVAListArg, Args, format_idx, |
9711 | inFunctionCall, CallType, CheckedVarArgs, UncoveredArg); |
9712 | |
9713 | if (!analyze_format_string::ParseScanfString(H, Str, Str + StrLen, |
9714 | S.getLangOpts(), |
9715 | S.Context.getTargetInfo())) |
9716 | H.DoneProcessing(); |
9717 | } |
9718 | } |
9719 | |
9720 | bool Sema::FormatStringHasSArg(const StringLiteral *FExpr) { |
9721 | |
9722 | StringRef StrRef = FExpr->getString(); |
9723 | const char *Str = StrRef.data(); |
9724 | |
9725 | const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); |
9726 | assert(T && "String literal not of constant array type!"); |
9727 | size_t TypeSize = T->getSize().getZExtValue(); |
9728 | size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); |
9729 | return analyze_format_string::ParseFormatStringHasSArg(Str, Str + StrLen, |
9730 | getLangOpts(), |
9731 | Context.getTargetInfo()); |
9732 | } |
9733 | |
9734 | |
9735 | |
9736 | |
9737 | |
9738 | static unsigned getLargerAbsoluteValueFunction(unsigned AbsFunction) { |
9739 | switch (AbsFunction) { |
9740 | default: |
9741 | return 0; |
9742 | |
9743 | case Builtin::BI__builtin_abs: |
9744 | return Builtin::BI__builtin_labs; |
9745 | case Builtin::BI__builtin_labs: |
9746 | return Builtin::BI__builtin_llabs; |
9747 | case Builtin::BI__builtin_llabs: |
9748 | return 0; |
9749 | |
9750 | case Builtin::BI__builtin_fabsf: |
9751 | return Builtin::BI__builtin_fabs; |
9752 | case Builtin::BI__builtin_fabs: |
9753 | return Builtin::BI__builtin_fabsl; |
9754 | case Builtin::BI__builtin_fabsl: |
9755 | return 0; |
9756 | |
9757 | case Builtin::BI__builtin_cabsf: |
9758 | return Builtin::BI__builtin_cabs; |
9759 | case Builtin::BI__builtin_cabs: |
9760 | return Builtin::BI__builtin_cabsl; |
9761 | case Builtin::BI__builtin_cabsl: |
9762 | return 0; |
9763 | |
9764 | case Builtin::BIabs: |
9765 | return Builtin::BIlabs; |
9766 | case Builtin::BIlabs: |
9767 | return Builtin::BIllabs; |
9768 | case Builtin::BIllabs: |
9769 | return 0; |
9770 | |
9771 | case Builtin::BIfabsf: |
9772 | return Builtin::BIfabs; |
9773 | case Builtin::BIfabs: |
9774 | return Builtin::BIfabsl; |
9775 | case Builtin::BIfabsl: |
9776 | return 0; |
9777 | |
9778 | case Builtin::BIcabsf: |
9779 | return Builtin::BIcabs; |
9780 | case Builtin::BIcabs: |
9781 | return Builtin::BIcabsl; |
9782 | case Builtin::BIcabsl: |
9783 | return 0; |
9784 | } |
9785 | } |
9786 | |
9787 | |
9788 | static QualType getAbsoluteValueArgumentType(ASTContext &Context, |
9789 | unsigned AbsType) { |
9790 | if (AbsType == 0) |
9791 | return QualType(); |
9792 | |
9793 | ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; |
9794 | QualType BuiltinType = Context.GetBuiltinType(AbsType, Error); |
9795 | if (Error != ASTContext::GE_None) |
9796 | return QualType(); |
9797 | |
9798 | const FunctionProtoType *FT = BuiltinType->getAs<FunctionProtoType>(); |
9799 | if (!FT) |
9800 | return QualType(); |
9801 | |
9802 | if (FT->getNumParams() != 1) |
9803 | return QualType(); |
9804 | |
9805 | return FT->getParamType(0); |
9806 | } |
9807 | |
9808 | |
9809 | |
9810 | static unsigned getBestAbsFunction(ASTContext &Context, QualType ArgType, |
9811 | unsigned AbsFunctionKind) { |
9812 | unsigned BestKind = 0; |
9813 | uint64_t ArgSize = Context.getTypeSize(ArgType); |
9814 | for (unsigned Kind = AbsFunctionKind; Kind != 0; |
9815 | Kind = getLargerAbsoluteValueFunction(Kind)) { |
9816 | QualType ParamType = getAbsoluteValueArgumentType(Context, Kind); |
9817 | if (Context.getTypeSize(ParamType) >= ArgSize) { |
9818 | if (BestKind == 0) |
9819 | BestKind = Kind; |
9820 | else if (Context.hasSameType(ParamType, ArgType)) { |
9821 | BestKind = Kind; |
9822 | break; |
9823 | } |
9824 | } |
9825 | } |
9826 | return BestKind; |
9827 | } |
9828 | |
9829 | enum AbsoluteValueKind { |
9830 | AVK_Integer, |
9831 | AVK_Floating, |
9832 | AVK_Complex |
9833 | }; |
9834 | |
9835 | static AbsoluteValueKind getAbsoluteValueKind(QualType T) { |
9836 | if (T->isIntegralOrEnumerationType()) |
9837 | return AVK_Integer; |
9838 | if (T->isRealFloatingType()) |
9839 | return AVK_Floating; |
9840 | if (T->isAnyComplexType()) |
9841 | return AVK_Complex; |
9842 | |
9843 | llvm_unreachable("Type not integer, floating, or complex"); |
9844 | } |
9845 | |
9846 | |
9847 | |
9848 | static unsigned changeAbsFunction(unsigned AbsKind, |
9849 | AbsoluteValueKind ValueKind) { |
9850 | switch (ValueKind) { |
9851 | case AVK_Integer: |
9852 | switch (AbsKind) { |
9853 | default: |
9854 | return 0; |
9855 | case Builtin::BI__builtin_fabsf: |
9856 | case Builtin::BI__builtin_fabs: |
9857 | case Builtin::BI__builtin_fabsl: |
9858 | case Builtin::BI__builtin_cabsf: |
9859 | case Builtin::BI__builtin_cabs: |
9860 | case Builtin::BI__builtin_cabsl: |
9861 | return Builtin::BI__builtin_abs; |
9862 | case Builtin::BIfabsf: |
9863 | case Builtin::BIfabs: |
9864 | case Builtin::BIfabsl: |
9865 | case Builtin::BIcabsf: |
9866 | case Builtin::BIcabs: |
9867 | case Builtin::BIcabsl: |
9868 | return Builtin::BIabs; |
9869 | } |
9870 | case AVK_Floating: |
9871 | switch (AbsKind) { |
9872 | default: |
9873 | return 0; |
9874 | case Builtin::BI__builtin_abs: |
9875 | case Builtin::BI__builtin_labs: |
9876 | case Builtin::BI__builtin_llabs: |
9877 | case Builtin::BI__builtin_cabsf: |
9878 | case Builtin::BI__builtin_cabs: |
9879 | case Builtin::BI__builtin_cabsl: |
9880 | return Builtin::BI__builtin_fabsf; |
9881 | case Builtin::BIabs: |
9882 | case Builtin::BIlabs: |
9883 | case Builtin::BIllabs: |
9884 | case Builtin::BIcabsf: |
9885 | case Builtin::BIcabs: |
9886 | case Builtin::BIcabsl: |
9887 | return Builtin::BIfabsf; |
9888 | } |
9889 | case AVK_Complex: |
9890 | switch (AbsKind) { |
9891 | default: |
9892 | return 0; |
9893 | case Builtin::BI__builtin_abs: |
9894 | case Builtin::BI__builtin_labs: |
9895 | case Builtin::BI__builtin_llabs: |
9896 | case Builtin::BI__builtin_fabsf: |
9897 | case Builtin::BI__builtin_fabs: |
9898 | case Builtin::BI__builtin_fabsl: |
9899 | return Builtin::BI__builtin_cabsf; |
9900 | case Builtin::BIabs: |
9901 | case Builtin::BIlabs: |
9902 | case Builtin::BIllabs: |
9903 | case Builtin::BIfabsf: |
9904 | case Builtin::BIfabs: |
9905 | case Builtin::BIfabsl: |
9906 | return Builtin::BIcabsf; |
9907 | } |
9908 | } |
9909 | llvm_unreachable("Unable to convert function"); |
9910 | } |
9911 | |
9912 | static unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { |
9913 | const IdentifierInfo *FnInfo = FDecl->getIdentifier(); |
9914 | if (!FnInfo) |
9915 | return 0; |
9916 | |
9917 | switch (FDecl->getBuiltinID()) { |
9918 | default: |
9919 | return 0; |
9920 | case Builtin::BI__builtin_abs: |
9921 | case Builtin::BI__builtin_fabs: |
9922 | case Builtin::BI__builtin_fabsf: |
9923 | case Builtin::BI__builtin_fabsl: |
9924 | case Builtin::BI__builtin_labs: |
9925 | case Builtin::BI__builtin_llabs: |
9926 | case Builtin::BI__builtin_cabs: |
9927 | case Builtin::BI__builtin_cabsf: |
9928 | case Builtin::BI__builtin_cabsl: |
9929 | case Builtin::BIabs: |
9930 | case Builtin::BIlabs: |
9931 | case Builtin::BIllabs: |
9932 | case Builtin::BIfabs: |
9933 | case Builtin::BIfabsf: |
9934 | case Builtin::BIfabsl: |
9935 | case Builtin::BIcabs: |
9936 | case Builtin::BIcabsf: |
9937 | case Builtin::BIcabsl: |
9938 | return FDecl->getBuiltinID(); |
9939 | } |
9940 | llvm_unreachable("Unknown Builtin type"); |
9941 | } |
9942 | |
9943 | |
9944 | |
9945 | static void emitReplacement(Sema &S, SourceLocation Loc, SourceRange Range, |
9946 | unsigned AbsKind, QualType ArgType) { |
9947 | bool EmitHeaderHint = true; |
9948 | const char *HeaderName = nullptr; |
9949 | const char *FunctionName = nullptr; |
9950 | if (S.getLangOpts().CPlusPlus && !ArgType->isAnyComplexType()) { |
9951 | FunctionName = "std::abs"; |
9952 | if (ArgType->isIntegralOrEnumerationType()) { |
9953 | HeaderName = "cstdlib"; |
9954 | } else if (ArgType->isRealFloatingType()) { |
9955 | HeaderName = "cmath"; |
9956 | } else { |
9957 | llvm_unreachable("Invalid Type"); |
9958 | } |
9959 | |
9960 | |
9961 | if (NamespaceDecl *Std = S.getStdNamespace()) { |
9962 | LookupResult R(S, &S.Context.Idents.get("abs"), Loc, Sema::LookupAnyName); |
9963 | R.suppressDiagnostics(); |
9964 | S.LookupQualifiedName(R, Std); |
9965 | |
9966 | for (const auto *I : R) { |
9967 | const FunctionDecl *FDecl = nullptr; |
9968 | if (const UsingShadowDecl *UsingD = dyn_cast<UsingShadowDecl>(I)) { |
9969 | FDecl = dyn_cast<FunctionDecl>(UsingD->getTargetDecl()); |
9970 | } else { |
9971 | FDecl = dyn_cast<FunctionDecl>(I); |
9972 | } |
9973 | if (!FDecl) |
9974 | continue; |
9975 | |
9976 | |
9977 | if (FDecl->getNumParams() != 1) |
9978 | continue; |
9979 | |
9980 | |
9981 | QualType ParamType = FDecl->getParamDecl(0)->getType(); |
9982 | if (getAbsoluteValueKind(ArgType) == getAbsoluteValueKind(ParamType) && |
9983 | S.Context.getTypeSize(ArgType) <= |
9984 | S.Context.getTypeSize(ParamType)) { |
9985 | |
9986 | EmitHeaderHint = false; |
9987 | break; |
9988 | } |
9989 | } |
9990 | } |
9991 | } else { |
9992 | FunctionName = S.Context.BuiltinInfo.getName(AbsKind); |
9993 | HeaderName = S.Context.BuiltinInfo.getHeaderName(AbsKind); |
9994 | |
9995 | if (HeaderName) { |
9996 | DeclarationName DN(&S.Context.Idents.get(FunctionName)); |
9997 | LookupResult R(S, DN, Loc, Sema::LookupAnyName); |
9998 | R.suppressDiagnostics(); |
9999 | S.LookupName(R, S.getCurScope()); |
10000 | |
10001 | if (R.isSingleResult()) { |
10002 | FunctionDecl *FD = dyn_cast<FunctionDecl>(R.getFoundDecl()); |
10003 | if (FD && FD->getBuiltinID() == AbsKind) { |
10004 | EmitHeaderHint = false; |
10005 | } else { |
10006 | return; |
10007 | } |
10008 | } else if (!R.empty()) { |
10009 | return; |
10010 | } |
10011 | } |
10012 | } |
10013 | |
10014 | S.Diag(Loc, diag::note_replace_abs_function) |
10015 | << FunctionName << FixItHint::CreateReplacement(Range, FunctionName); |
10016 | |
10017 | if (!HeaderName) |
10018 | return; |
10019 | |
10020 | if (!EmitHeaderHint) |
10021 | return; |
10022 | |
10023 | S.Diag(Loc, diag::note_include_header_or_declare) << HeaderName |
10024 | << FunctionName; |
10025 | } |
10026 | |
10027 | template <std::size_t StrLen> |
10028 | static bool IsStdFunction(const FunctionDecl *FDecl, |
10029 | const char (&Str)[StrLen]) { |
10030 | if (!FDecl) |
10031 | return false; |
10032 | if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr(Str)) |
10033 | return false; |
10034 | if (!FDecl->isInStdNamespace()) |
10035 | return false; |
10036 | |
10037 | return true; |
10038 | } |
10039 | |
10040 | |
10041 | void Sema::CheckAbsoluteValueFunction(const CallExpr *Call, |
10042 | const FunctionDecl *FDecl) { |
10043 | if (Call->getNumArgs() != 1) |
10044 | return; |
10045 | |
10046 | unsigned AbsKind = getAbsoluteValueFunctionKind(FDecl); |
10047 | bool IsStdAbs = IsStdFunction(FDecl, "abs"); |
10048 | if (AbsKind == 0 && !IsStdAbs) |
10049 | return; |
10050 | |
10051 | QualType ArgType = Call->getArg(0)->IgnoreParenImpCasts()->getType(); |
10052 | QualType ParamType = Call->getArg(0)->getType(); |
10053 | |
10054 | |
10055 | |
10056 | if (ArgType->isUnsignedIntegerType()) { |
10057 | const char *FunctionName = |
10058 | IsStdAbs ? "std::abs" : Context.BuiltinInfo.getName(AbsKind); |
10059 | Diag(Call->getExprLoc(), diag::warn_unsigned_abs) << ArgType << ParamType; |
10060 | Diag(Call->getExprLoc(), diag::note_remove_abs) |
10061 | << FunctionName |
10062 | << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()); |
10063 | return; |
10064 | } |
10065 | |
10066 | |
10067 | |
10068 | if (ArgType->isPointerType() || ArgType->canDecayToPointerType()) { |
10069 | unsigned DiagType = 0; |
10070 | if (ArgType->isFunctionType()) |
10071 | DiagType = 1; |
10072 | else if (ArgType->isArrayType()) |
10073 | DiagType = 2; |
10074 | |
10075 | Diag(Call->getExprLoc(), diag::warn_pointer_abs) << DiagType << ArgType; |
10076 | return; |
10077 | } |
10078 | |
10079 | |
10080 | |
10081 | if (IsStdAbs) |
10082 | return; |
10083 | |
10084 | AbsoluteValueKind ArgValueKind = getAbsoluteValueKind(ArgType); |
10085 | AbsoluteValueKind ParamValueKind = getAbsoluteValueKind(ParamType); |
10086 | |
10087 | |
10088 | |
10089 | if (ArgValueKind == ParamValueKind) { |
10090 | if (Context.getTypeSize(ArgType) <= Context.getTypeSize(ParamType)) |
10091 | return; |
10092 | |
10093 | unsigned NewAbsKind = getBestAbsFunction(Context, ArgType, AbsKind); |
10094 | Diag(Call->getExprLoc(), diag::warn_abs_too_small) |
10095 | << FDecl << ArgType << ParamType; |
10096 | |
10097 | if (NewAbsKind == 0) |
10098 | return; |
10099 | |
10100 | emitReplacement(*this, Call->getExprLoc(), |
10101 | Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); |
10102 | return; |
10103 | } |
10104 | |
10105 | |
10106 | |
10107 | |
10108 | unsigned NewAbsKind = changeAbsFunction(AbsKind, ArgValueKind); |
10109 | NewAbsKind = getBestAbsFunction(Context, ArgType, NewAbsKind); |
10110 | if (NewAbsKind == 0) |
10111 | return; |
10112 | |
10113 | Diag(Call->getExprLoc(), diag::warn_wrong_absolute_value_type) |
10114 | << FDecl << ParamValueKind << ArgValueKind; |
10115 | |
10116 | emitReplacement(*this, Call->getExprLoc(), |
10117 | Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); |
10118 | } |
10119 | |
10120 | |
10121 | void Sema::CheckMaxUnsignedZero(const CallExpr *Call, |
10122 | const FunctionDecl *FDecl) { |
10123 | if (!Call || !FDecl) return; |
10124 | |
10125 | |
10126 | if (inTemplateInstantiation()) return; |
10127 | if (Call->getExprLoc().isMacroID()) return; |
10128 | |
10129 | |
10130 | if (Call->getNumArgs() != 2) return; |
10131 | if (!IsStdFunction(FDecl, "max")) return; |
10132 | const auto * ArgList = FDecl->getTemplateSpecializationArgs(); |
10133 | if (!ArgList) return; |
10134 | if (ArgList->size() != 1) return; |
10135 | |
10136 | |
10137 | const auto& TA = ArgList->get(0); |
10138 | if (TA.getKind() != TemplateArgument::Type) return; |
10139 | QualType ArgType = TA.getAsType(); |
10140 | if (!ArgType->isUnsignedIntegerType()) return; |
10141 | |
10142 | |
10143 | auto IsLiteralZeroArg = [](const Expr* E) -> bool { |
10144 | const auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E); |
10145 | if (!MTE) return false; |
10146 | const auto *Num = dyn_cast<IntegerLiteral>(MTE->getSubExpr()); |
10147 | if (!Num) return false; |
10148 | if (Num->getValue() != 0) return false; |
10149 | return true; |
10150 | }; |
10151 | |
10152 | const Expr *FirstArg = Call->getArg(0); |
10153 | const Expr *SecondArg = Call->getArg(1); |
10154 | const bool IsFirstArgZero = IsLiteralZeroArg(FirstArg); |
10155 | const bool IsSecondArgZero = IsLiteralZeroArg(SecondArg); |
10156 | |
10157 | |
10158 | if (IsFirstArgZero == IsSecondArgZero) return; |
10159 | |
10160 | SourceRange FirstRange = FirstArg->getSourceRange(); |
10161 | SourceRange SecondRange = SecondArg->getSourceRange(); |
10162 | |
10163 | SourceRange ZeroRange = IsFirstArgZero ? FirstRange : SecondRange; |
10164 | |
10165 | Diag(Call->getExprLoc(), diag::warn_max_unsigned_zero) |
10166 | << IsFirstArgZero << Call->getCallee()->getSourceRange() << ZeroRange; |
10167 | |
10168 | |
10169 | SourceRange RemovalRange; |
10170 | if (IsFirstArgZero) { |
10171 | RemovalRange = SourceRange(FirstRange.getBegin(), |
10172 | SecondRange.getBegin().getLocWithOffset(-1)); |
10173 | } else { |
10174 | RemovalRange = SourceRange(getLocForEndOfToken(FirstRange.getEnd()), |
10175 | SecondRange.getEnd()); |
10176 | } |
10177 | |
10178 | Diag(Call->getExprLoc(), diag::note_remove_max_call) |
10179 | << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()) |
10180 | << FixItHint::CreateRemoval(RemovalRange); |
10181 | } |
10182 | |
10183 | |
10184 | |
10185 | |
10186 | |
10187 | |
10188 | |
10189 | static bool CheckMemorySizeofForComparison(Sema &S, const Expr *E, |
10190 | IdentifierInfo *FnName, |
10191 | SourceLocation FnLoc, |
10192 | SourceLocation RParenLoc) { |
10193 | const BinaryOperator *Size = dyn_cast<BinaryOperator>(E); |
10194 | if (!Size) |
10195 | return false; |
10196 | |
10197 | |
10198 | if (!Size->isComparisonOp() && !Size->isLogicalOp()) |
10199 | return false; |
10200 | |
10201 | SourceRange SizeRange = Size->getSourceRange(); |
10202 | S.Diag(Size->getOperatorLoc(), diag::warn_memsize_comparison) |
10203 | << SizeRange << FnName; |
10204 | S.Diag(FnLoc, diag::note_memsize_comparison_paren) |
10205 | << FnName |
10206 | << FixItHint::CreateInsertion( |
10207 | S.getLocForEndOfToken(Size->getLHS()->getEndLoc()), ")") |
10208 | << FixItHint::CreateRemoval(RParenLoc); |
10209 | S.Diag(SizeRange.getBegin(), diag::note_memsize_comparison_cast_silence) |
10210 | << FixItHint::CreateInsertion(SizeRange.getBegin(), "(size_t)(") |
10211 | << FixItHint::CreateInsertion(S.getLocForEndOfToken(SizeRange.getEnd()), |
10212 | ")"); |
10213 | |
10214 | return true; |
10215 | } |
10216 | |
10217 | |
10218 | |
10219 | static const CXXRecordDecl *getContainedDynamicClass(QualType T, |
10220 | bool &IsContained) { |
10221 | |
10222 | const Type *Ty = T->getBaseElementTypeUnsafe(); |
10223 | IsContained = false; |
10224 | |
10225 | const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl(); |
10226 | RD = RD ? RD->getDefinition() : nullptr; |
10227 | if (!RD || RD->isInvalidDecl()) |
10228 | return nullptr; |
10229 | |
10230 | if (RD->isDynamicClass()) |
10231 | return RD; |
10232 | |
10233 | |
10234 | |
10235 | |
10236 | for (auto *FD : RD->fields()) { |
10237 | bool SubContained; |
10238 | if (const CXXRecordDecl *ContainedRD = |
10239 | getContainedDynamicClass(FD->getType(), SubContained)) { |
10240 | IsContained = true; |
10241 | return ContainedRD; |
10242 | } |
10243 | } |
10244 | |
10245 | return nullptr; |
10246 | } |
10247 | |
10248 | static const UnaryExprOrTypeTraitExpr *getAsSizeOfExpr(const Expr *E) { |
10249 | if (const auto *Unary = dyn_cast<UnaryExprOrTypeTraitExpr>(E)) |
10250 | if (Unary->getKind() == UETT_SizeOf) |
10251 | return Unary; |
10252 | return nullptr; |
10253 | } |
10254 | |
10255 | |
10256 | |
10257 | static const Expr *getSizeOfExprArg(const Expr *E) { |
10258 | if (const UnaryExprOrTypeTraitExpr *SizeOf = getAsSizeOfExpr(E)) |
10259 | if (!SizeOf->isArgumentType()) |
10260 | return SizeOf->getArgumentExpr()->IgnoreParenImpCasts(); |
10261 | return nullptr; |
10262 | } |
10263 | |
10264 | |
10265 | static QualType getSizeOfArgType(const Expr *E) { |
10266 | if (const UnaryExprOrTypeTraitExpr *SizeOf = getAsSizeOfExpr(E)) |
10267 | return SizeOf->getTypeOfArgument(); |
10268 | return QualType(); |
10269 | } |
10270 | |
10271 | namespace { |
10272 | |
10273 | struct SearchNonTrivialToInitializeField |
10274 | : DefaultInitializedTypeVisitor<SearchNonTrivialToInitializeField> { |
10275 | using Super = |
10276 | DefaultInitializedTypeVisitor<SearchNonTrivialToInitializeField>; |
10277 | |
10278 | SearchNonTrivialToInitializeField(const Expr *E, Sema &S) : E(E), S(S) {} |
10279 | |
10280 | void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT, |
10281 | SourceLocation SL) { |
10282 | if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { |
10283 | asDerived().visitArray(PDIK, AT, SL); |
10284 | return; |
10285 | } |
10286 | |
10287 | Super::visitWithKind(PDIK, FT, SL); |
10288 | } |
10289 | |
10290 | void visitARCStrong(QualType FT, SourceLocation SL) { |
10291 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); |
10292 | } |
10293 | void visitARCWeak(QualType FT, SourceLocation SL) { |
10294 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); |
10295 | } |
10296 | void visitStruct(QualType FT, SourceLocation SL) { |
10297 | for (const FieldDecl *FD : FT->castAs<RecordType>()->getDecl()->fields()) |
10298 | visit(FD->getType(), FD->getLocation()); |
10299 | } |
10300 | void visitArray(QualType::PrimitiveDefaultInitializeKind PDIK, |
10301 | const ArrayType *AT, SourceLocation SL) { |
10302 | visit(getContext().getBaseElementType(AT), SL); |
10303 | } |
10304 | void visitTrivial(QualType FT, SourceLocation SL) {} |
10305 | |
10306 | static void diag(QualType RT, const Expr *E, Sema &S) { |
10307 | SearchNonTrivialToInitializeField(E, S).visitStruct(RT, SourceLocation()); |
10308 | } |
10309 | |
10310 | ASTContext &getContext() { return S.getASTContext(); } |
10311 | |
10312 | const Expr *E; |
10313 | Sema &S; |
10314 | }; |
10315 | |
10316 | struct SearchNonTrivialToCopyField |
10317 | : CopiedTypeVisitor<SearchNonTrivialToCopyField, false> { |
10318 | using Super = CopiedTypeVisitor<SearchNonTrivialToCopyField, false>; |
10319 | |
10320 | SearchNonTrivialToCopyField(const Expr *E, Sema &S) : E(E), S(S) {} |
10321 | |
10322 | void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType FT, |
10323 | SourceLocation SL) { |
10324 | if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { |
10325 | asDerived().visitArray(PCK, AT, SL); |
10326 | return; |
10327 | } |
10328 | |
10329 | Super::visitWithKind(PCK, FT, SL); |
10330 | } |
10331 | |
10332 | void visitARCStrong(QualType FT, SourceLocation SL) { |
10333 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); |
10334 | } |
10335 | void visitARCWeak(QualType FT, SourceLocation SL) { |
10336 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); |
10337 | } |
10338 | void visitStruct(QualType FT, SourceLocation SL) { |
10339 | for (const FieldDecl *FD : FT->castAs<RecordType>()->getDecl()->fields()) |
10340 | visit(FD->getType(), FD->getLocation()); |
10341 | } |
10342 | void visitArray(QualType::PrimitiveCopyKind PCK, const ArrayType *AT, |
10343 | SourceLocation SL) { |
10344 | visit(getContext().getBaseElementType(AT), SL); |
10345 | } |
10346 | void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT, |
10347 | SourceLocation SL) {} |
10348 | void visitTrivial(QualType FT, SourceLocation SL) {} |
10349 | void visitVolatileTrivial(QualType FT, SourceLocation SL) {} |
10350 | |
10351 | static void diag(QualType RT, const Expr *E, Sema &S) { |
10352 | SearchNonTrivialToCopyField(E, S).visitStruct(RT, SourceLocation()); |
10353 | } |
10354 | |
10355 | ASTContext &getContext() { return S.getASTContext(); } |
10356 | |
10357 | const Expr *E; |
10358 | Sema &S; |
10359 | }; |
10360 | |
10361 | } |
10362 | |
10363 | |
10364 | static bool doesExprLikelyComputeSize(const Expr *SizeofExpr) { |
10365 | SizeofExpr = SizeofExpr->IgnoreParenImpCasts(); |
10366 | |
10367 | if (const auto *BO = dyn_cast<BinaryOperator>(SizeofExpr)) { |
10368 | if (BO->getOpcode() != BO_Mul && BO->getOpcode() != BO_Add) |
10369 | return false; |
10370 | |
10371 | return doesExprLikelyComputeSize(BO->getLHS()) || |
10372 | doesExprLikelyComputeSize(BO->getRHS()); |
10373 | } |
10374 | |
10375 | return getAsSizeOfExpr(SizeofExpr) != nullptr; |
10376 | } |
10377 | |
10378 | |
10379 | |
10380 | |
10381 | |
10382 | |
10383 | |
10384 | |
10385 | |
10386 | |
10387 | |
10388 | static bool isArgumentExpandedFromMacro(SourceManager &SM, |
10389 | SourceLocation CallLoc, |
10390 | SourceLocation ArgLoc) { |
10391 | if (!CallLoc.isMacroID()) |
10392 | return SM.getFileID(CallLoc) != SM.getFileID(ArgLoc); |
10393 | |
10394 | return SM.getFileID(SM.getImmediateMacroCallerLoc(CallLoc)) != |
10395 | SM.getFileID(SM.getImmediateMacroCallerLoc(ArgLoc)); |
10396 | } |
10397 | |
10398 | |
10399 | |
10400 | static void CheckMemaccessSize(Sema &S, unsigned BId, const CallExpr *Call) { |
10401 | if (BId != Builtin::BImemset && BId != Builtin::BIbzero) |
10402 | return; |
10403 | |
10404 | const Expr *SizeArg = |
10405 | Call->getArg(BId == Builtin::BImemset ? 2 : 1)->IgnoreImpCasts(); |
10406 | |
10407 | auto isLiteralZero = [](const Expr *E) { |
10408 | return isa<IntegerLiteral>(E) && cast<IntegerLiteral>(E)->getValue() == 0; |
10409 | }; |
10410 | |
10411 | |
10412 | SourceLocation CallLoc = Call->getRParenLoc(); |
10413 | SourceManager &SM = S.getSourceManager(); |
10414 | if (isLiteralZero(SizeArg) && |
10415 | !isArgumentExpandedFromMacro(SM, CallLoc, SizeArg->getExprLoc())) { |
10416 | |
10417 | SourceLocation DiagLoc = SizeArg->getExprLoc(); |
10418 | |
10419 | |
10420 | |
10421 | if (BId == Builtin::BIbzero || |
10422 | (CallLoc.isMacroID() && Lexer::getImmediateMacroName( |
10423 | CallLoc, SM, S.getLangOpts()) == "bzero")) { |
10424 | S.Diag(DiagLoc, diag::warn_suspicious_bzero_size); |
10425 | S.Diag(DiagLoc, diag::note_suspicious_bzero_size_silence); |
10426 | } else if (!isLiteralZero(Call->getArg(1)->IgnoreImpCasts())) { |
10427 | S.Diag(DiagLoc, diag::warn_suspicious_sizeof_memset) << 0; |
10428 | S.Diag(DiagLoc, diag::note_suspicious_sizeof_memset_silence) << 0; |
10429 | } |
10430 | return; |
10431 | } |
10432 | |
10433 | |
10434 | |
10435 | |
10436 | if (BId == Builtin::BImemset && |
10437 | doesExprLikelyComputeSize(Call->getArg(1)) && |
10438 | !doesExprLikelyComputeSize(Call->getArg(2))) { |
10439 | SourceLocation DiagLoc = Call->getArg(1)->getExprLoc(); |
10440 | S.Diag(DiagLoc, diag::warn_suspicious_sizeof_memset) << 1; |
10441 | S.Diag(DiagLoc, diag::note_suspicious_sizeof_memset_silence) << 1; |
10442 | return; |
10443 | } |
10444 | } |
10445 | |
10446 | |
10447 | |
10448 | |
10449 | |
10450 | |
10451 | |
10452 | |
10453 | void Sema::CheckMemaccessArguments(const CallExpr *Call, |
10454 | unsigned BId, |
10455 | IdentifierInfo *FnName) { |
10456 | assert(BId != 0); |
10457 | |
10458 | |
10459 | |
10460 | unsigned ExpectedNumArgs = |
10461 | (BId == Builtin::BIstrndup || BId == Builtin::BIbzero ? 2 : 3); |
10462 | if (Call->getNumArgs() < ExpectedNumArgs) |
10463 | return; |
10464 | |
10465 | unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIbzero || |
10466 | BId == Builtin::BIstrndup ? 1 : 2); |
10467 | unsigned LenArg = |
10468 | (BId == Builtin::BIbzero || BId == Builtin::BIstrndup ? 1 : 2); |
10469 | const Expr *LenExpr = Call->getArg(LenArg)->IgnoreParenImpCasts(); |
10470 | |
10471 | if (CheckMemorySizeofForComparison(*this, LenExpr, FnName, |
10472 | Call->getBeginLoc(), Call->getRParenLoc())) |
10473 | return; |
10474 | |
10475 | |
10476 | CheckMemaccessSize(*this, BId, Call); |
10477 | |
10478 | |
10479 | QualType SizeOfArgTy = getSizeOfArgType(LenExpr); |
10480 | const Expr *SizeOfArg = getSizeOfExprArg(LenExpr); |
10481 | llvm::FoldingSetNodeID SizeOfArgID; |
10482 | |
10483 | |
10484 | |
10485 | |
10486 | QualType FirstArgTy = Call->getArg(0)->IgnoreParenImpCasts()->getType(); |
10487 | if (BId == Builtin::BIbzero && !FirstArgTy->getAs<PointerType>()) |
10488 | return; |
10489 | |
10490 | for (unsigned ArgIdx = 0; ArgIdx != LastArg; ++ArgIdx) { |
10491 | const Expr *Dest = Call->getArg(ArgIdx)->IgnoreParenImpCasts(); |
10492 | SourceRange ArgRange = Call->getArg(ArgIdx)->getSourceRange(); |
10493 | |
10494 | QualType DestTy = Dest->getType(); |
10495 | QualType PointeeTy; |
10496 | if (const PointerType *DestPtrTy = DestTy->getAs<PointerType>()) { |
10497 | PointeeTy = DestPtrTy->getPointeeType(); |
10498 | |
10499 | |
10500 | |
10501 | if (PointeeTy->isVoidType()) |
10502 | continue; |
10503 | |
10504 | |
10505 | |
10506 | |
10507 | |
10508 | if (SizeOfArg && |
10509 | !Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, |
10510 | SizeOfArg->getExprLoc())) { |
10511 | |
10512 | |
10513 | if (SizeOfArgID == llvm::FoldingSetNodeID()) |
10514 | SizeOfArg->Profile(SizeOfArgID, Context, true); |
10515 | llvm::FoldingSetNodeID DestID; |
10516 | Dest->Profile(DestID, Context, true); |
10517 | if (DestID == SizeOfArgID) { |
10518 | |
10519 | |
10520 | unsigned ActionIdx = 0; |
10521 | StringRef ReadableName = FnName->getName(); |
10522 | |
10523 | if (const UnaryOperator *UnaryOp = dyn_cast<UnaryOperator>(Dest)) |
10524 | if (UnaryOp->getOpcode() == UO_AddrOf) |
10525 | ActionIdx = 1; |
10526 | if (!PointeeTy->isIncompleteType() && |
10527 | (Context.getTypeSize(PointeeTy) == Context.getCharWidth())) |
10528 | ActionIdx = 2; |
10529 | |
10530 | |
10531 | |
10532 | |
10533 | SourceLocation SL = SizeOfArg->getExprLoc(); |
10534 | SourceRange DSR = Dest->getSourceRange(); |
10535 | SourceRange SSR = SizeOfArg->getSourceRange(); |
10536 | SourceManager &SM = getSourceManager(); |
10537 | |
10538 | if (SM.isMacroArgExpansion(SL)) { |
10539 | ReadableName = Lexer::getImmediateMacroName(SL, SM, LangOpts); |
10540 | SL = SM.getSpellingLoc(SL); |
10541 | DSR = SourceRange(SM.getSpellingLoc(DSR.getBegin()), |
10542 | SM.getSpellingLoc(DSR.getEnd())); |
10543 | SSR = SourceRange(SM.getSpellingLoc(SSR.getBegin()), |
10544 | SM.getSpellingLoc(SSR.getEnd())); |
10545 | } |
10546 | |
10547 | DiagRuntimeBehavior(SL, SizeOfArg, |
10548 | PDiag(diag::warn_sizeof_pointer_expr_memaccess) |
10549 | << ReadableName |
10550 | << PointeeTy |
10551 | << DestTy |
10552 | << DSR |
10553 | << SSR); |
10554 | DiagRuntimeBehavior(SL, SizeOfArg, |
10555 | PDiag(diag::warn_sizeof_pointer_expr_memaccess_note) |
10556 | << ActionIdx |
10557 | << SSR); |
10558 | |
10559 | break; |
10560 | } |
10561 | } |
10562 | |
10563 | |
10564 | |
10565 | |
10566 | if (SizeOfArgTy != QualType()) { |
10567 | if (PointeeTy->isRecordType() && |
10568 | Context.typesAreCompatible(SizeOfArgTy, DestTy)) { |
10569 | DiagRuntimeBehavior(LenExpr->getExprLoc(), Dest, |
10570 | PDiag(diag::warn_sizeof_pointer_type_memaccess) |
10571 | << FnName << SizeOfArgTy << ArgIdx |
10572 | << PointeeTy << Dest->getSourceRange() |
10573 | << LenExpr->getSourceRange()); |
10574 | break; |
10575 | } |
10576 | } |
10577 | } else if (DestTy->isArrayType()) { |
10578 | PointeeTy = DestTy; |
10579 | } |
10580 | |
10581 | if (PointeeTy == QualType()) |
10582 | continue; |
10583 | |
10584 | |
10585 | bool IsContained; |
10586 | if (const CXXRecordDecl *ContainedRD = |
10587 | getContainedDynamicClass(PointeeTy, IsContained)) { |
10588 | |
10589 | unsigned OperationType = 0; |
10590 | const bool IsCmp = BId == Builtin::BImemcmp || BId == Builtin::BIbcmp; |
10591 | |
10592 | |
10593 | if (ArgIdx != 0 || IsCmp) { |
10594 | if (BId == Builtin::BImemcpy) |
10595 | OperationType = 1; |
10596 | else if(BId == Builtin::BImemmove) |
10597 | OperationType = 2; |
10598 | else if (IsCmp) |
10599 | OperationType = 3; |
10600 | } |
10601 | |
10602 | DiagRuntimeBehavior(Dest->getExprLoc(), Dest, |
10603 | PDiag(diag::warn_dyn_class_memaccess) |
10604 | << (IsCmp ? ArgIdx + 2 : ArgIdx) << FnName |
10605 | << IsContained << ContainedRD << OperationType |
10606 | << Call->getCallee()->getSourceRange()); |
10607 | } else if (PointeeTy.hasNonTrivialObjCLifetime() && |
10608 | BId != Builtin::BImemset) |
10609 | DiagRuntimeBehavior( |
10610 | Dest->getExprLoc(), Dest, |
10611 | PDiag(diag::warn_arc_object_memaccess) |
10612 | << ArgIdx << FnName << PointeeTy |
10613 | << Call->getCallee()->getSourceRange()); |
10614 | else if (const auto *RT = PointeeTy->getAs<RecordType>()) { |
10615 | if ((BId == Builtin::BImemset || BId == Builtin::BIbzero) && |
10616 | RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize()) { |
10617 | DiagRuntimeBehavior(Dest->getExprLoc(), Dest, |
10618 | PDiag(diag::warn_cstruct_memaccess) |
10619 | << ArgIdx << FnName << PointeeTy << 0); |
10620 | SearchNonTrivialToInitializeField::diag(PointeeTy, Dest, *this); |
10621 | } else if ((BId == Builtin::BImemcpy || BId == Builtin::BImemmove) && |
10622 | RT->getDecl()->isNonTrivialToPrimitiveCopy()) { |
10623 | DiagRuntimeBehavior(Dest->getExprLoc(), Dest, |
10624 | PDiag(diag::warn_cstruct_memaccess) |
10625 | << ArgIdx << FnName << PointeeTy << 1); |
10626 | SearchNonTrivialToCopyField::diag(PointeeTy, Dest, *this); |
10627 | } else { |
10628 | continue; |
10629 | } |
10630 | } else |
10631 | continue; |
10632 | |
10633 | DiagRuntimeBehavior( |
10634 | Dest->getExprLoc(), Dest, |
10635 | PDiag(diag::note_bad_memaccess_silence) |
10636 | << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)")); |
10637 | break; |
10638 | } |
10639 | } |
10640 | |
10641 | |
10642 | |
10643 | |
10644 | static const Expr *ignoreLiteralAdditions(const Expr *Ex, ASTContext &Ctx) { |
10645 | Ex = Ex->IgnoreParenCasts(); |
10646 | |
10647 | while (true) { |
10648 | const BinaryOperator * BO = dyn_cast<BinaryOperator>(Ex); |
10649 | if (!BO || !BO->isAdditiveOp()) |
10650 | break; |
10651 | |
10652 | const Expr *RHS = BO->getRHS()->IgnoreParenCasts(); |
10653 | const Expr *LHS = BO->getLHS()->IgnoreParenCasts(); |
10654 | |
10655 | if (isa<IntegerLiteral>(RHS)) |
10656 | Ex = LHS; |
10657 | else if (isa<IntegerLiteral>(LHS)) |
10658 | Ex = RHS; |
10659 | else |
10660 | break; |
10661 | } |
10662 | |
10663 | return Ex; |
10664 | } |
10665 | |
10666 | static bool isConstantSizeArrayWithMoreThanOneElement(QualType Ty, |
10667 | ASTContext &Context) { |
10668 | |
10669 | if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(Ty)) { |
10670 | |
10671 | if (CAT->getSize().getSExtValue() <= 1) |
10672 | return false; |
10673 | } else if (!Ty->isVariableArrayType()) { |
10674 | return false; |
10675 | } |
10676 | return true; |
10677 | } |
10678 | |
10679 | |
10680 | |
10681 | void Sema::CheckStrlcpycatArguments(const CallExpr *Call, |
10682 | IdentifierInfo *FnName) { |
10683 | |
10684 | |
10685 | unsigned NumArgs = Call->getNumArgs(); |
10686 | if ((NumArgs != 3) && (NumArgs != 4)) |
10687 | return; |
10688 | |
10689 | const Expr *SrcArg = ignoreLiteralAdditions(Call->getArg(1), Context); |
10690 | const Expr *SizeArg = ignoreLiteralAdditions(Call->getArg(2), Context); |
10691 | const Expr *CompareWithSrc = nullptr; |
10692 | |
10693 | if (CheckMemorySizeofForComparison(*this, SizeArg, FnName, |
10694 | Call->getBeginLoc(), Call->getRParenLoc())) |
10695 | return; |
10696 | |
10697 | |
10698 | if (const Expr *Ex = getSizeOfExprArg(SizeArg)) |
10699 | CompareWithSrc = Ex; |
10700 | else { |
10701 | |
10702 | if (const CallExpr *SizeCall = dyn_cast<CallExpr>(SizeArg)) { |
10703 | if (SizeCall->getBuiltinCallee() == Builtin::BIstrlen && |
10704 | SizeCall->getNumArgs() == 1) |
10705 | CompareWithSrc = ignoreLiteralAdditions(SizeCall->getArg(0), Context); |
10706 | } |
10707 | } |
10708 | |
10709 | if (!CompareWithSrc) |
10710 | return; |
10711 | |
10712 | |
10713 | |
10714 | |
10715 | |
10716 | const DeclRefExpr *SrcArgDRE = dyn_cast<DeclRefExpr>(SrcArg); |
10717 | if (!SrcArgDRE) |
10718 | return; |
10719 | |
10720 | const DeclRefExpr *CompareWithSrcDRE = dyn_cast<DeclRefExpr>(CompareWithSrc); |
10721 | if (!CompareWithSrcDRE || |
10722 | SrcArgDRE->getDecl() != CompareWithSrcDRE->getDecl()) |
10723 | return; |
10724 | |
10725 | const Expr *OriginalSizeArg = Call->getArg(2); |
10726 | Diag(CompareWithSrcDRE->getBeginLoc(), diag::warn_strlcpycat_wrong_size) |
10727 | << OriginalSizeArg->getSourceRange() << FnName; |
10728 | |
10729 | |
10730 | |
10731 | |
10732 | |
10733 | const Expr *DstArg = Call->getArg(0)->IgnoreParenImpCasts(); |
10734 | if (!isConstantSizeArrayWithMoreThanOneElement(DstArg->getType(), Context)) |
10735 | return; |
10736 | |
10737 | SmallString<128> sizeString; |
10738 | llvm::raw_svector_ostream OS(sizeString); |
10739 | OS << "sizeof("; |
10740 | DstArg->printPretty(OS, nullptr, getPrintingPolicy()); |
10741 | OS << ")"; |
10742 | |
10743 | Diag(OriginalSizeArg->getBeginLoc(), diag::note_strlcpycat_wrong_size) |
10744 | << FixItHint::CreateReplacement(OriginalSizeArg->getSourceRange(), |
10745 | OS.str()); |
10746 | } |
10747 | |
10748 | |
10749 | static bool referToTheSameDecl(const Expr *E1, const Expr *E2) { |
10750 | if (const DeclRefExpr *D1 = dyn_cast_or_null<DeclRefExpr>(E1)) |
10751 | if (const DeclRefExpr *D2 = dyn_cast_or_null<DeclRefExpr>(E2)) |
10752 | return D1->getDecl() == D2->getDecl(); |
10753 | return false; |
10754 | } |
10755 | |
10756 | static const Expr *getStrlenExprArg(const Expr *E) { |
10757 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { |
10758 | const FunctionDecl *FD = CE->getDirectCallee(); |
10759 | if (!FD || FD->getMemoryFunctionKind() != Builtin::BIstrlen) |
10760 | return nullptr; |
10761 | return CE->getArg(0)->IgnoreParenCasts(); |
10762 | } |
10763 | return nullptr; |
10764 | } |
10765 | |
10766 | |
10767 | |
10768 | |
10769 | void Sema::CheckStrncatArguments(const CallExpr *CE, |
10770 | IdentifierInfo *FnName) { |
10771 | |
10772 | if (CE->getNumArgs() < 3) |
10773 | return; |
10774 | const Expr *DstArg = CE->getArg(0)->IgnoreParenCasts(); |
10775 | const Expr *SrcArg = CE->getArg(1)->IgnoreParenCasts(); |
10776 | const Expr *LenArg = CE->getArg(2)->IgnoreParenCasts(); |
10777 | |
10778 | if (CheckMemorySizeofForComparison(*this, LenArg, FnName, CE->getBeginLoc(), |
10779 | CE->getRParenLoc())) |
10780 | return; |
10781 | |
10782 | |
10783 | |
10784 | unsigned PatternType = 0; |
10785 | if (const Expr *SizeOfArg = getSizeOfExprArg(LenArg)) { |
10786 | |
10787 | if (referToTheSameDecl(SizeOfArg, DstArg)) |
10788 | PatternType = 1; |
10789 | |
10790 | else if (referToTheSameDecl(SizeOfArg, SrcArg)) |
10791 | PatternType = 2; |
10792 | } else if (const BinaryOperator *BE = dyn_cast<BinaryOperator>(LenArg)) { |
10793 | if (BE->getOpcode() == BO_Sub) { |
10794 | const Expr *L = BE->getLHS()->IgnoreParenCasts(); |
10795 | const Expr *R = BE->getRHS()->IgnoreParenCasts(); |
10796 | |
10797 | if (referToTheSameDecl(DstArg, getSizeOfExprArg(L)) && |
10798 | referToTheSameDecl(DstArg, getStrlenExprArg(R))) |
10799 | PatternType = 1; |
10800 | |
10801 | else if (referToTheSameDecl(SrcArg, getSizeOfExprArg(L))) |
10802 | PatternType = 2; |
10803 | } |
10804 | } |
10805 | |
10806 | if (PatternType == 0) |
10807 | return; |
10808 | |
10809 | |
10810 | SourceLocation SL = LenArg->getBeginLoc(); |
10811 | SourceRange SR = LenArg->getSourceRange(); |
10812 | SourceManager &SM = getSourceManager(); |
10813 | |
10814 | |
10815 | if (SM.isMacroArgExpansion(SL)) { |
10816 | SL = SM.getSpellingLoc(SL); |
10817 | SR = SourceRange(SM.getSpellingLoc(SR.getBegin()), |
10818 | SM.getSpellingLoc(SR.getEnd())); |
10819 | } |
10820 | |
10821 | |
10822 | QualType DstTy = DstArg->getType(); |
10823 | bool isKnownSizeArray = isConstantSizeArrayWithMoreThanOneElement(DstTy, |
10824 | Context); |
10825 | if (!isKnownSizeArray) { |
10826 | if (PatternType == 1) |
10827 | Diag(SL, diag::warn_strncat_wrong_size) << SR; |
10828 | else |
10829 | Diag(SL, diag::warn_strncat_src_size) << SR; |
10830 | return; |
10831 | } |
10832 | |
10833 | if (PatternType == 1) |
10834 | Diag(SL, diag::warn_strncat_large_size) << SR; |
10835 | else |
10836 | Diag(SL, diag::warn_strncat_src_size) << SR; |
10837 | |
10838 | SmallString<128> sizeString; |
10839 | llvm::raw_svector_ostream OS(sizeString); |
10840 | OS << "sizeof("; |
10841 | DstArg->printPretty(OS, nullptr, getPrintingPolicy()); |
10842 | OS << ") - "; |
10843 | OS << "strlen("; |
10844 | DstArg->printPretty(OS, nullptr, getPrintingPolicy()); |
10845 | OS << ") - 1"; |
10846 | |
10847 | Diag(SL, diag::note_strncat_wrong_size) |
10848 | << FixItHint::CreateReplacement(SR, OS.str()); |
10849 | } |
10850 | |
10851 | namespace { |
10852 | void CheckFreeArgumentsOnLvalue(Sema &S, const std::string &CalleeName, |
10853 | const UnaryOperator *UnaryExpr, const Decl *D) { |
10854 | if (isa<FieldDecl, FunctionDecl, VarDecl>(D)) { |
10855 | S.Diag(UnaryExpr->getBeginLoc(), diag::warn_free_nonheap_object) |
10856 | << CalleeName << 0 << cast<NamedDecl>(D); |
10857 | return; |
10858 | } |
10859 | } |
10860 | |
10861 | void CheckFreeArgumentsAddressof(Sema &S, const std::string &CalleeName, |
10862 | const UnaryOperator *UnaryExpr) { |
10863 | if (const auto *Lvalue = dyn_cast<DeclRefExpr>(UnaryExpr->getSubExpr())) { |
10864 | const Decl *D = Lvalue->getDecl(); |
10865 | if (isa<DeclaratorDecl>(D)) |
10866 | if (!dyn_cast<DeclaratorDecl>(D)->getType()->isReferenceType()) |
10867 | return CheckFreeArgumentsOnLvalue(S, CalleeName, UnaryExpr, D); |
10868 | } |
10869 | |
10870 | if (const auto *Lvalue = dyn_cast<MemberExpr>(UnaryExpr->getSubExpr())) |
10871 | return CheckFreeArgumentsOnLvalue(S, CalleeName, UnaryExpr, |
10872 | Lvalue->getMemberDecl()); |
10873 | } |
10874 | |
10875 | void CheckFreeArgumentsPlus(Sema &S, const std::string &CalleeName, |
10876 | const UnaryOperator *UnaryExpr) { |
10877 | const auto *Lambda = dyn_cast<LambdaExpr>( |
10878 | UnaryExpr->getSubExpr()->IgnoreImplicitAsWritten()->IgnoreParens()); |
10879 | if (!Lambda) |
10880 | return; |
10881 | |
10882 | S.Diag(Lambda->getBeginLoc(), diag::warn_free_nonheap_object) |
10883 | << CalleeName << 2 ; |
10884 | } |
10885 | |
10886 | void CheckFreeArgumentsStackArray(Sema &S, const std::string &CalleeName, |
10887 | const DeclRefExpr *Lvalue) { |
10888 | const auto *Var = dyn_cast<VarDecl>(Lvalue->getDecl()); |
10889 | if (Var == nullptr) |
10890 | return; |
10891 | |
10892 | S.Diag(Lvalue->getBeginLoc(), diag::warn_free_nonheap_object) |
10893 | << CalleeName << 0 << Var; |
10894 | } |
10895 | |
10896 | void CheckFreeArgumentsCast(Sema &S, const std::string &CalleeName, |
10897 | const CastExpr *Cast) { |
10898 | SmallString<128> SizeString; |
10899 | llvm::raw_svector_ostream OS(SizeString); |
10900 | |
10901 | clang::CastKind Kind = Cast->getCastKind(); |
10902 | if (Kind == clang::CK_BitCast && |
10903 | !Cast->getSubExpr()->getType()->isFunctionPointerType()) |
10904 | return; |
10905 | if (Kind == clang::CK_IntegralToPointer && |
10906 | !isa<IntegerLiteral>( |
10907 | Cast->getSubExpr()->IgnoreParenImpCasts()->IgnoreParens())) |
10908 | return; |
10909 | |
10910 | switch (Cast->getCastKind()) { |
10911 | case clang::CK_BitCast: |
10912 | case clang::CK_IntegralToPointer: |
10913 | case clang::CK_FunctionToPointerDecay: |
10914 | OS << '\''; |
10915 | Cast->printPretty(OS, nullptr, S.getPrintingPolicy()); |
10916 | OS << '\''; |
10917 | break; |
10918 | default: |
10919 | return; |
10920 | } |
10921 | |
10922 | S.Diag(Cast->getBeginLoc(), diag::warn_free_nonheap_object) |
10923 | << CalleeName << 0 << OS.str(); |
10924 | } |
10925 | } |
10926 | |
10927 | |
10928 | void Sema::CheckFreeArguments(const CallExpr *E) { |
10929 | const std::string CalleeName = |
10930 | dyn_cast<FunctionDecl>(E->getCalleeDecl())->getQualifiedNameAsString(); |
10931 | |
10932 | { |
10933 | const Expr *Arg = E->getArg(0)->IgnoreParenCasts(); |
10934 | if (const auto *UnaryExpr = dyn_cast<UnaryOperator>(Arg)) |
10935 | switch (UnaryExpr->getOpcode()) { |
10936 | case UnaryOperator::Opcode::UO_AddrOf: |
10937 | return CheckFreeArgumentsAddressof(*this, CalleeName, UnaryExpr); |
10938 | case UnaryOperator::Opcode::UO_Plus: |
10939 | return CheckFreeArgumentsPlus(*this, CalleeName, UnaryExpr); |
10940 | default: |
10941 | break; |
10942 | } |
10943 | |
10944 | if (const auto *Lvalue = dyn_cast<DeclRefExpr>(Arg)) |
10945 | if (Lvalue->getType()->isArrayType()) |
10946 | return CheckFreeArgumentsStackArray(*this, CalleeName, Lvalue); |
10947 | |
10948 | if (const auto *Label = dyn_cast<AddrLabelExpr>(Arg)) { |
10949 | Diag(Label->getBeginLoc(), diag::warn_free_nonheap_object) |
10950 | << CalleeName << 0 << Label->getLabel()->getIdentifier(); |
10951 | return; |
10952 | } |
10953 | |
10954 | if (isa<BlockExpr>(Arg)) { |
10955 | Diag(Arg->getBeginLoc(), diag::warn_free_nonheap_object) |
10956 | << CalleeName << 1 ; |
10957 | return; |
10958 | } |
10959 | } |
10960 | |
10961 | if (const auto *Cast = dyn_cast<CastExpr>(E->getArg(0))) |
10962 | return CheckFreeArgumentsCast(*this, CalleeName, Cast); |
10963 | } |
10964 | |
10965 | void |
10966 | Sema::CheckReturnValExpr(Expr *RetValExp, QualType lhsType, |
10967 | SourceLocation ReturnLoc, |
10968 | bool isObjCMethod, |
10969 | const AttrVec *Attrs, |
10970 | const FunctionDecl *FD) { |
10971 | |
10972 | if (((Attrs && hasSpecificAttr<ReturnsNonNullAttr>(*Attrs)) || |
10973 | (!isObjCMethod && isNonNullType(Context, lhsType))) && |
10974 | CheckNonNullExpr(*this, RetValExp)) |
10975 | Diag(ReturnLoc, diag::warn_null_ret) |
10976 | << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange(); |
10977 | |
10978 | |
10979 | |
10980 | |
10981 | |
10982 | |
10983 | if (FD) { |
10984 | OverloadedOperatorKind Op = FD->getOverloadedOperator(); |
10985 | if (Op == OO_New || Op == OO_Array_New) { |
10986 | const FunctionProtoType *Proto |
10987 | = FD->getType()->castAs<FunctionProtoType>(); |
10988 | if (!Proto->isNothrow(true) && |
10989 | CheckNonNullExpr(*this, RetValExp)) |
10990 | Diag(ReturnLoc, diag::warn_operator_new_returns_null) |
10991 | << FD << getLangOpts().CPlusPlus11; |
10992 | } |
10993 | } |
10994 | |
10995 | |
10996 | |
10997 | if (Context.getTargetInfo().getTriple().isPPC64()) |
10998 | CheckPPCMMAType(RetValExp->getType(), ReturnLoc); |
10999 | } |
11000 | |
11001 | |
11002 | |
11003 | |
11004 | |
11005 | |
11006 | void Sema::CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr *RHS) { |
11007 | Expr* LeftExprSansParen = LHS->IgnoreParenImpCasts(); |
11008 | Expr* RightExprSansParen = RHS->IgnoreParenImpCasts(); |
11009 | |
11010 | |
11011 | |
11012 | if (DeclRefExpr* DRL = dyn_cast<DeclRefExpr>(LeftExprSansParen)) |
11013 | if (DeclRefExpr* DRR = dyn_cast<DeclRefExpr>(RightExprSansParen)) |
11014 | if (DRL->getDecl() == DRR->getDecl()) |
11015 | return; |
11016 | |
11017 | |
11018 | |
11019 | |
11020 | |
11021 | |
11022 | if (FloatingLiteral* FLL = dyn_cast<FloatingLiteral>(LeftExprSansParen)) { |
11023 | if (FLL->isExact()) |
11024 | return; |
11025 | } else |
11026 | if (FloatingLiteral* FLR = dyn_cast<FloatingLiteral>(RightExprSansParen)) |
11027 | if (FLR->isExact()) |
11028 | return; |
11029 | |
11030 | |
11031 | if (CallExpr* CL = dyn_cast<CallExpr>(LeftExprSansParen)) |
11032 | if (CL->getBuiltinCallee()) |
11033 | return; |
11034 | |
11035 | if (CallExpr* CR = dyn_cast<CallExpr>(RightExprSansParen)) |
11036 | if (CR->getBuiltinCallee()) |
11037 | return; |
11038 | |
11039 | |
11040 | Diag(Loc, diag::warn_floatingpoint_eq) |
11041 | << LHS->getSourceRange() << RHS->getSourceRange(); |
11042 | } |
11043 | |
11044 | |
11045 | |
11046 | |
11047 | namespace { |
11048 | |
11049 | |
11050 | |
11051 | struct IntRange { |
11052 | |
11053 | |
11054 | unsigned Width; |
11055 | |
11056 | |
11057 | |
11058 | |
11059 | bool NonNegative; |
11060 | |
11061 | IntRange(unsigned Width, bool NonNegative) |
11062 | : Width(Width), NonNegative(NonNegative) {} |
11063 | |
11064 | |
11065 | unsigned valueBits() const { |
11066 | return NonNegative ? Width : Width - 1; |
11067 | } |
11068 | |
11069 | |
11070 | static IntRange forBoolType() { |
11071 | return IntRange(1, true); |
11072 | } |
11073 | |
11074 | |
11075 | static IntRange forValueOfType(ASTContext &C, QualType T) { |
11076 | return forValueOfCanonicalType(C, |
11077 | T->getCanonicalTypeInternal().getTypePtr()); |
11078 | } |
11079 | |
11080 | |
11081 | static IntRange forValueOfCanonicalType(ASTContext &C, const Type *T) { |
11082 | assert(T->isCanonicalUnqualified()); |
11083 | |
11084 | if (const VectorType *VT = dyn_cast<VectorType>(T)) |
11085 | T = VT->getElementType().getTypePtr(); |
11086 | if (const ComplexType *CT = dyn_cast<ComplexType>(T)) |
11087 | T = CT->getElementType().getTypePtr(); |
11088 | if (const AtomicType *AT = dyn_cast<AtomicType>(T)) |
11089 | T = AT->getValueType().getTypePtr(); |
11090 | |
11091 | if (!C.getLangOpts().CPlusPlus) { |
11092 | |
11093 | if (const EnumType *ET = dyn_cast<EnumType>(T)) |
11094 | T = ET->getDecl()->getIntegerType().getDesugaredType(C).getTypePtr(); |
11095 | } else if (const EnumType *ET = dyn_cast<EnumType>(T)) { |
11096 | |
11097 | EnumDecl *Enum = ET->getDecl(); |
11098 | |
11099 | |
11100 | if (Enum->isFixed()) { |
11101 | return IntRange(C.getIntWidth(QualType(T, 0)), |
11102 | !ET->isSignedIntegerOrEnumerationType()); |
11103 | } |
11104 | |
11105 | unsigned NumPositive = Enum->getNumPositiveBits(); |
11106 | unsigned NumNegative = Enum->getNumNegativeBits(); |
11107 | |
11108 | if (NumNegative == 0) |
11109 | return IntRange(NumPositive, true); |
11110 | else |
11111 | return IntRange(std::max(NumPositive + 1, NumNegative), |
11112 | false); |
11113 | } |
11114 | |
11115 | if (const auto *EIT = dyn_cast<ExtIntType>(T)) |
11116 | return IntRange(EIT->getNumBits(), EIT->isUnsigned()); |
11117 | |
11118 | const BuiltinType *BT = cast<BuiltinType>(T); |
11119 | assert(BT->isInteger()); |
11120 | |
11121 | return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); |
11122 | } |
11123 | |
11124 | |
11125 | |
11126 | |
11127 | |
11128 | |
11129 | static IntRange forTargetOfCanonicalType(ASTContext &C, const Type *T) { |
11130 | assert(T->isCanonicalUnqualified()); |
11131 | |
11132 | if (const VectorType *VT = dyn_cast<VectorType>(T)) |
11133 | T = VT->getElementType().getTypePtr(); |
11134 | if (const ComplexType *CT = dyn_cast<ComplexType>(T)) |
11135 | T = CT->getElementType().getTypePtr(); |
11136 | if (const AtomicType *AT = dyn_cast<AtomicType>(T)) |
11137 | T = AT->getValueType().getTypePtr(); |
11138 | if (const EnumType *ET = dyn_cast<EnumType>(T)) |
11139 | T = C.getCanonicalType(ET->getDecl()->getIntegerType()).getTypePtr(); |
11140 | |
11141 | if (const auto *EIT = dyn_cast<ExtIntType>(T)) |
11142 | return IntRange(EIT->getNumBits(), EIT->isUnsigned()); |
11143 | |
11144 | const BuiltinType *BT = cast<BuiltinType>(T); |
11145 | assert(BT->isInteger()); |
11146 | |
11147 | return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); |
11148 | } |
11149 | |
11150 | |
11151 | static IntRange join(IntRange L, IntRange R) { |
11152 | bool Unsigned = L.NonNegative && R.NonNegative; |
11153 | return IntRange(std::max(L.valueBits(), R.valueBits()) + !Unsigned, |
11154 | L.NonNegative && R.NonNegative); |
11155 | } |
11156 | |
11157 | |
11158 | static IntRange bit_and(IntRange L, IntRange R) { |
11159 | unsigned Bits = std::max(L.Width, R.Width); |
11160 | bool NonNegative = false; |
11161 | if (L.NonNegative) { |
11162 | Bits = std::min(Bits, L.Width); |
11163 | NonNegative = true; |
11164 | } |
11165 | if (R.NonNegative) { |
11166 | Bits = std::min(Bits, R.Width); |
11167 | NonNegative = true; |
11168 | } |
11169 | return IntRange(Bits, NonNegative); |
11170 | } |
11171 | |
11172 | |
11173 | static IntRange sum(IntRange L, IntRange R) { |
11174 | bool Unsigned = L.NonNegative && R.NonNegative; |
11175 | return IntRange(std::max(L.valueBits(), R.valueBits()) + 1 + !Unsigned, |
11176 | Unsigned); |
11177 | } |
11178 | |
11179 | |
11180 | static IntRange difference(IntRange L, IntRange R) { |
11181 | |
11182 | |
11183 | |
11184 | bool CanWiden = !L.NonNegative || !R.NonNegative; |
11185 | bool Unsigned = L.NonNegative && R.Width == 0; |
11186 | return IntRange(std::max(L.valueBits(), R.valueBits()) + CanWiden + |
11187 | !Unsigned, |
11188 | Unsigned); |
11189 | } |
11190 | |
11191 | |
11192 | static IntRange product(IntRange L, IntRange R) { |
11193 | |
11194 | |
11195 | |
11196 | bool CanWiden = !L.NonNegative && !R.NonNegative; |
11197 | bool Unsigned = L.NonNegative && R.NonNegative; |
11198 | return IntRange(L.valueBits() + R.valueBits() + CanWiden + !Unsigned, |
11199 | Unsigned); |
11200 | } |
11201 | |
11202 | |
11203 | static IntRange rem(IntRange L, IntRange R) { |
11204 | |
11205 | |
11206 | bool Unsigned = L.NonNegative; |
11207 | return IntRange(std::min(L.valueBits(), R.valueBits()) + !Unsigned, |
11208 | Unsigned); |
11209 | } |
11210 | }; |
11211 | |
11212 | } |
11213 | |
11214 | static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, |
11215 | unsigned MaxWidth) { |
11216 | if (value.isSigned() && value.isNegative()) |
11217 | return IntRange(value.getMinSignedBits(), false); |
11218 | |
11219 | if (value.getBitWidth() > MaxWidth) |
11220 | value = value.trunc(MaxWidth); |
11221 | |
11222 | |
11223 | |
11224 | return IntRange(value.getActiveBits(), true); |
11225 | } |
11226 | |
11227 | static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, |
11228 | unsigned MaxWidth) { |
11229 | if (result.isInt()) |
11230 | return GetValueRange(C, result.getInt(), MaxWidth); |
11231 | |
11232 | if (result.isVector()) { |
11233 | IntRange R = GetValueRange(C, result.getVectorElt(0), Ty, MaxWidth); |
11234 | for (unsigned i = 1, e = result.getVectorLength(); i != e; ++i) { |
11235 | IntRange El = GetValueRange(C, result.getVectorElt(i), Ty, MaxWidth); |
11236 | R = IntRange::join(R, El); |
11237 | } |
11238 | return R; |
11239 | } |
11240 | |
11241 | if (result.isComplexInt()) { |
11242 | IntRange R = GetValueRange(C, result.getComplexIntReal(), MaxWidth); |
11243 | IntRange I = GetValueRange(C, result.getComplexIntImag(), MaxWidth); |
11244 | return IntRange::join(R, I); |
11245 | } |
11246 | |
11247 | |
11248 | |
11249 | |
11250 | |
11251 | |
11252 | assert(result.isLValue() || result.isAddrLabelDiff()); |
11253 | return IntRange(MaxWidth, Ty->isUnsignedIntegerOrEnumerationType()); |
11254 | } |
11255 | |
11256 | static QualType GetExprType(const Expr *E) { |
11257 | QualType Ty = E->getType(); |
11258 | if (const AtomicType *AtomicRHS = Ty->getAs<AtomicType>()) |
11259 | Ty = AtomicRHS->getValueType(); |
11260 | return Ty; |
11261 | } |
11262 | |
11263 | |
11264 | |
11265 | |
11266 | |
11267 | |
11268 | |
11269 | |
11270 | |
11271 | static IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth, |
11272 | bool InConstantContext, bool Approximate) { |
11273 | E = E->IgnoreParens(); |
11274 | |
11275 | |
11276 | Expr::EvalResult result; |
11277 | if (E->EvaluateAsRValue(result, C, InConstantContext)) |
11278 | return GetValueRange(C, result.Val, GetExprType(E), MaxWidth); |
11279 | |
11280 | |
11281 | |
11282 | |
11283 | if (const auto *CE = dyn_cast<ImplicitCastExpr>(E)) { |
11284 | if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue) |
11285 | return GetExprRange(C, CE->getSubExpr(), MaxWidth, InConstantContext, |
11286 | Approximate); |
11287 | |
11288 | IntRange OutputTypeRange = IntRange::forValueOfType(C, GetExprType(CE)); |
11289 | |
11290 | bool isIntegerCast = CE->getCastKind() == CK_IntegralCast || |
11291 | CE->getCastKind() == CK_BooleanToSignedIntegral; |
11292 | |
11293 | |
11294 | if (!isIntegerCast) |
11295 | return OutputTypeRange; |
11296 | |
11297 | IntRange SubRange = GetExprRange(C, CE->getSubExpr(), |
11298 | std::min(MaxWidth, OutputTypeRange.Width), |
11299 | InConstantContext, Approximate); |
11300 | |
11301 | |
11302 | if (SubRange.Width >= OutputTypeRange.Width) |
11303 | return OutputTypeRange; |
11304 | |
11305 | |
11306 | |
11307 | return IntRange(SubRange.Width, |
11308 | SubRange.NonNegative || OutputTypeRange.NonNegative); |
11309 | } |
11310 | |
11311 | if (const auto *CO = dyn_cast<ConditionalOperator>(E)) { |
11312 | |
11313 | bool CondResult; |
11314 | if (CO->getCond()->EvaluateAsBooleanCondition(CondResult, C)) |
11315 | return GetExprRange(C, |
11316 | CondResult ? CO->getTrueExpr() : CO->getFalseExpr(), |
11317 | MaxWidth, InConstantContext, Approximate); |
11318 | |
11319 | |
11320 | |
11321 | |
11322 | Expr *E = CO->getTrueExpr(); |
11323 | IntRange L = E->getType()->isVoidType() |
11324 | ? IntRange{0, true} |
11325 | : GetExprRange(C, E, MaxWidth, InConstantContext, Approximate); |
11326 | E = CO->getFalseExpr(); |
11327 | IntRange R = E->getType()->isVoidType() |
11328 | ? IntRange{0, true} |
11329 | : GetExprRange(C, E, MaxWidth, InConstantContext, Approximate); |
11330 | return IntRange::join(L, R); |
11331 | } |
11332 | |
11333 | if (const auto *BO = dyn_cast<BinaryOperator>(E)) { |
11334 | IntRange (*Combine)(IntRange, IntRange) = IntRange::join; |
11335 | |
11336 | switch (BO->getOpcode()) { |
11337 | case BO_Cmp: |
11338 | llvm_unreachable("builtin <=> should have class type"); |
11339 | |
11340 | |
11341 | case BO_LAnd: |
11342 | case BO_LOr: |
11343 | case BO_LT: |
11344 | case BO_GT: |
11345 | case BO_LE: |
11346 | case BO_GE: |
11347 | case BO_EQ: |
11348 | case BO_NE: |
11349 | return IntRange::forBoolType(); |
11350 | |
11351 | |
11352 | |
11353 | case BO_MulAssign: |
11354 | case BO_DivAssign: |
11355 | case BO_RemAssign: |
11356 | case BO_AddAssign: |
11357 | case BO_SubAssign: |
11358 | case BO_XorAssign: |
11359 | case BO_OrAssign: |
11360 | |
11361 | return IntRange::forValueOfType(C, GetExprType(E)); |
11362 | |
11363 | |
11364 | |
11365 | case BO_Assign: |
11366 | |
11367 | return GetExprRange(C, BO->getRHS(), MaxWidth, InConstantContext, |
11368 | Approximate); |
11369 | |
11370 | |
11371 | case BO_PtrMemD: |
11372 | case BO_PtrMemI: |
11373 | return IntRange::forValueOfType(C, GetExprType(E)); |
11374 | |
11375 | |
11376 | case BO_And: |
11377 | case BO_AndAssign: |
11378 | Combine = IntRange::bit_and; |
11379 | break; |
11380 | |
11381 | |
11382 | case BO_Shl: |
11383 | |
11384 | |
11385 | if (IntegerLiteral *I |
11386 | = dyn_cast<IntegerLiteral>(BO->getLHS()->IgnoreParenCasts())) { |
11387 | if (I->getValue() == 1) { |
11388 | IntRange R = IntRange::forValueOfType(C, GetExprType(E)); |
11389 | return IntRange(R.Width, true); |
11390 | } |
11391 | } |
11392 | LLVM_FALLTHROUGH; |
11393 | |
11394 | case BO_ShlAssign: |
11395 | return IntRange::forValueOfType(C, GetExprType(E)); |
11396 | |
11397 | |
11398 | case BO_Shr: |
11399 | case BO_ShrAssign: { |
11400 | IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth, InConstantContext, |
11401 | Approximate); |
11402 | |
11403 | |
11404 | |
11405 | if (Optional<llvm::APSInt> shift = |
11406 | BO->getRHS()->getIntegerConstantExpr(C)) { |
11407 | if (shift->isNonNegative()) { |
11408 | unsigned zext = shift->getZExtValue(); |
11409 | if (zext >= L.Width) |
11410 | L.Width = (L.NonNegative ? 0 : 1); |
11411 | else |
11412 | L.Width -= zext; |
11413 | } |
11414 | } |
11415 | |
11416 | return L; |
11417 | } |
11418 | |
11419 | |
11420 | case BO_Comma: |
11421 | return GetExprRange(C, BO->getRHS(), MaxWidth, InConstantContext, |
11422 | Approximate); |
11423 | |
11424 | case BO_Add: |
11425 | if (!Approximate) |
11426 | Combine = IntRange::sum; |
11427 | break; |
11428 | |
11429 | case BO_Sub: |
11430 | if (BO->getLHS()->getType()->isPointerType()) |
11431 | return IntRange::forValueOfType(C, GetExprType(E)); |
11432 | if (!Approximate) |
11433 | Combine = IntRange::difference; |
11434 | break; |
11435 | |
11436 | case BO_Mul: |
11437 | if (!Approximate) |
11438 | Combine = IntRange::product; |
11439 | break; |
11440 | |
11441 | |
11442 | |
11443 | case BO_Div: { |
11444 | |
11445 | unsigned opWidth = C.getIntWidth(GetExprType(E)); |
11446 | IntRange L = GetExprRange(C, BO->getLHS(), opWidth, InConstantContext, |
11447 | Approximate); |
11448 | |
11449 | |
11450 | if (Optional<llvm::APSInt> divisor = |
11451 | BO->getRHS()->getIntegerConstantExpr(C)) { |
11452 | unsigned log2 = divisor->logBase2(); |
11453 | if (log2 >= L.Width) |
11454 | L.Width = (L.NonNegative ? 0 : 1); |
11455 | else |
11456 | L.Width = std::min(L.Width - log2, MaxWidth); |
11457 | return L; |
11458 | } |
11459 | |
11460 | |
11461 | |
11462 | |
11463 | IntRange R = GetExprRange(C, BO->getRHS(), opWidth, InConstantContext, |
11464 | Approximate); |
11465 | return IntRange(L.Width, L.NonNegative && R.NonNegative); |
11466 | } |
11467 | |
11468 | case BO_Rem: |
11469 | Combine = IntRange::rem; |
11470 | break; |
11471 | |
11472 | |
11473 | case BO_Xor: |
11474 | case BO_Or: |
11475 | break; |
11476 | } |
11477 | |
11478 | |
11479 | |
11480 | QualType T = GetExprType(E); |
11481 | unsigned opWidth = C.getIntWidth(T); |
11482 | IntRange L = |
11483 | GetExprRange(C, BO->getLHS(), opWidth, InConstantContext, Approximate); |
11484 | IntRange R = |
11485 | GetExprRange(C, BO->getRHS(), opWidth, InConstantContext, Approximate); |
11486 | IntRange C = Combine(L, R); |
11487 | C.NonNegative |= T->isUnsignedIntegerOrEnumerationType(); |
11488 | C.Width = std::min(C.Width, MaxWidth); |
11489 | return C; |
11490 | } |
11491 | |
11492 | if (const auto *UO = dyn_cast<UnaryOperator>(E)) { |
11493 | switch (UO->getOpcode()) { |
11494 | |
11495 | case UO_LNot: |
11496 | return IntRange::forBoolType(); |
11497 | |
11498 | |
11499 | case UO_Deref: |
11500 | case UO_AddrOf: |
11501 | return IntRange::forValueOfType(C, GetExprType(E)); |
11502 | |
11503 | default: |
11504 | return GetExprRange(C, UO->getSubExpr(), MaxWidth, InConstantContext, |
11505 | Approximate); |
11506 | } |
11507 | } |
11508 | |
11509 | if (const auto *OVE = dyn_cast<OpaqueValueExpr>(E)) |
11510 | return GetExprRange(C, OVE->getSourceExpr(), MaxWidth, InConstantContext, |
11511 | Approximate); |
11512 | |
11513 | if (const auto *BitField = E->getSourceBitField()) |
11514 | return IntRange(BitField->getBitWidthValue(C), |
11515 | BitField->getType()->isUnsignedIntegerOrEnumerationType()); |
11516 | |
11517 | return IntRange::forValueOfType(C, GetExprType(E)); |
11518 | } |
11519 | |
11520 | static IntRange GetExprRange(ASTContext &C, const Expr *E, |
11521 | bool InConstantContext, bool Approximate) { |
11522 | return GetExprRange(C, E, C.getIntWidth(GetExprType(E)), InConstantContext, |
11523 | Approximate); |
11524 | } |
11525 | |
11526 | |
11527 | |
11528 | |
11529 | static bool IsSameFloatAfterCast(const llvm::APFloat &value, |
11530 | const llvm::fltSemantics &Src, |
11531 | const llvm::fltSemantics &Tgt) { |
11532 | llvm::APFloat truncated = value; |
11533 | |
11534 | bool ignored; |
11535 | truncated.convert(Src, llvm::APFloat::rmNearestTiesToEven, &ignored); |
11536 | truncated.convert(Tgt, llvm::APFloat::rmNearestTiesToEven, &ignored); |
11537 | |
11538 | return truncated.bitwiseIsEqual(value); |
11539 | } |
11540 | |
11541 | |
11542 | |
11543 | |
11544 | |
11545 | |
11546 | static bool IsSameFloatAfterCast(const APValue &value, |
11547 | const llvm::fltSemantics &Src, |
11548 | const llvm::fltSemantics &Tgt) { |
11549 | if (value.isFloat()) |
11550 | return IsSameFloatAfterCast(value.getFloat(), Src, Tgt); |
11551 | |
11552 | if (value.isVector()) { |
11553 | for (unsigned i = 0, e = value.getVectorLength(); i != e; ++i) |
11554 | if (!IsSameFloatAfterCast(value.getVectorElt(i), Src, Tgt)) |
11555 | return false; |
11556 | return true; |
11557 | } |
11558 | |
11559 | assert(value.isComplexFloat()); |
11560 | return (IsSameFloatAfterCast(value.getComplexFloatReal(), Src, Tgt) && |
11561 | IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt)); |
11562 | } |
11563 | |
11564 | static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC, |
11565 | bool IsListInit = false); |
11566 | |
11567 | static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) { |
11568 | |
11569 | if (const DeclRefExpr *DR = |
11570 | dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts())) |
11571 | if (isa<EnumConstantDecl>(DR->getDecl())) |
11572 | return true; |
11573 | |
11574 | |
11575 | |
11576 | |
11577 | SourceLocation BeginLoc = E->getBeginLoc(); |
11578 | if (BeginLoc.isMacroID()) { |
11579 | StringRef MacroName = Lexer::getImmediateMacroName( |
11580 | BeginLoc, S.getSourceManager(), S.getLangOpts()); |
11581 | return MacroName != "YES" && MacroName != "NO" && |
11582 | MacroName != "true" && MacroName != "false"; |
11583 | } |
11584 | |
11585 | return false; |
11586 | } |
11587 | |
11588 | static bool isKnownToHaveUnsignedValue(Expr *E) { |
11589 | return E->getType()->isIntegerType() && |
11590 | (!E->getType()->isSignedIntegerType() || |
11591 | !E->IgnoreParenImpCasts()->getType()->isSignedIntegerType()); |
11592 | } |
11593 | |
11594 | namespace { |
11595 | |
11596 | |
11597 | |
11598 | |
11599 | |
11600 | |
11601 | |
11602 | |
11603 | |
11604 | |
11605 | struct PromotedRange { |
11606 | |
11607 | llvm::APSInt PromotedMin; |
11608 | |
11609 | llvm::APSInt PromotedMax; |
11610 | |
11611 | PromotedRange(IntRange R, unsigned BitWidth, bool Unsigned) { |
11612 | if (R.Width == 0) |
11613 | PromotedMin = PromotedMax = llvm::APSInt(BitWidth, Unsigned); |
11614 | else if (R.Width >= BitWidth && !Unsigned) { |
11615 | |
11616 | |
11617 | |
11618 | PromotedMin = llvm::APSInt::getMinValue(BitWidth, Unsigned); |
11619 | PromotedMax = llvm::APSInt::getMaxValue(BitWidth, Unsigned); |
11620 | } else { |
11621 | PromotedMin = llvm::APSInt::getMinValue(R.Width, R.NonNegative) |
11622 | .extOrTrunc(BitWidth); |
11623 | PromotedMin.setIsUnsigned(Unsigned); |
11624 | |
11625 | PromotedMax = llvm::APSInt::getMaxValue(R.Width, R.NonNegative) |
11626 | .extOrTrunc(BitWidth); |
11627 | PromotedMax.setIsUnsigned(Unsigned); |
11628 | } |
11629 | } |
11630 | |
11631 | |
11632 | bool isContiguous() const { return PromotedMin <= PromotedMax; } |
11633 | |
11634 | |
11635 | enum ComparisonResult { |
11636 | LT = 0x1, |
11637 | LE = 0x2, |
11638 | GT = 0x4, |
11639 | GE = 0x8, |
11640 | EQ = 0x10, |
11641 | NE = 0x20, |
11642 | InRangeFlag = 0x40, |
11643 | |
11644 | Less = LE | LT | NE, |
11645 | Min = LE | InRangeFlag, |
11646 | InRange = InRangeFlag, |
11647 | Max = GE | InRangeFlag, |
11648 | Greater = GE | GT | NE, |
11649 | |
11650 | OnlyValue = LE | GE | EQ | InRangeFlag, |
11651 | InHole = NE |
11652 | }; |
11653 | |
11654 | ComparisonResult compare(const llvm::APSInt &Value) const { |
11655 | assert(Value.getBitWidth() == PromotedMin.getBitWidth() && |
11656 | Value.isUnsigned() == PromotedMin.isUnsigned()); |
11657 | if (!isContiguous()) { |
11658 | assert(Value.isUnsigned() && "discontiguous range for signed compare"); |
11659 | if (Value.isMinValue()) return Min; |
11660 | if (Value.isMaxValue()) return Max; |
11661 | if (Value >= PromotedMin) return InRange; |
11662 | if (Value <= PromotedMax) return InRange; |
11663 | return InHole; |
11664 | } |
11665 | |
11666 | switch (llvm::APSInt::compareValues(Value, PromotedMin)) { |
11667 | case -1: return Less; |
11668 | case 0: return PromotedMin == PromotedMax ? OnlyValue : Min; |
11669 | case 1: |
11670 | switch (llvm::APSInt::compareValues(Value, PromotedMax)) { |
11671 | case -1: return InRange; |
11672 | case 0: return Max; |
11673 | case 1: return Greater; |
11674 | } |
11675 | } |
11676 | |
11677 | llvm_unreachable("impossible compare result"); |
11678 | } |
11679 | |
11680 | static llvm::Optional<StringRef> |
11681 | constantValue(BinaryOperatorKind Op, ComparisonResult R, bool ConstantOnRHS) { |
11682 | if (Op == BO_Cmp) { |
11683 | ComparisonResult LTFlag = LT, GTFlag = GT; |
11684 | if (ConstantOnRHS) std::swap(LTFlag, GTFlag); |
11685 | |
11686 | if (R & EQ) return StringRef("'std::strong_ordering::equal'"); |
11687 | if (R & LTFlag) return StringRef("'std::strong_ordering::less'"); |
11688 | if (R & GTFlag) return StringRef("'std::strong_ordering::greater'"); |
11689 | return llvm::None; |
11690 | } |
11691 | |
11692 | ComparisonResult TrueFlag, FalseFlag; |
11693 | if (Op == BO_EQ) { |
11694 | TrueFlag = EQ; |
11695 | FalseFlag = NE; |
11696 | } else if (Op == BO_NE) { |
11697 | TrueFlag = NE; |
11698 | FalseFlag = EQ; |
11699 | } else { |
11700 | if ((Op == BO_LT || Op == BO_GE) ^ ConstantOnRHS) { |
11701 | TrueFlag = LT; |
11702 | FalseFlag = GE; |
11703 | } else { |
11704 | TrueFlag = GT; |
11705 | FalseFlag = LE; |
11706 | } |
11707 | if (Op == BO_GE || Op == BO_LE) |
11708 | std::swap(TrueFlag, FalseFlag); |
11709 | } |
11710 | if (R & TrueFlag) |
11711 | return StringRef("true"); |
11712 | if (R & FalseFlag) |
11713 | return StringRef("false"); |
11714 | return llvm::None; |
11715 | } |
11716 | }; |
11717 | } |
11718 | |
11719 | static bool HasEnumType(Expr *E) { |
11720 | |
11721 | while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { |
11722 | if (ICE->getCastKind() != CK_IntegralCast && |
11723 | ICE->getCastKind() != CK_NoOp) |
11724 | break; |
11725 | E = ICE->getSubExpr(); |
11726 | } |
11727 | |
11728 | return E->getType()->isEnumeralType(); |
11729 | } |
11730 | |
11731 | static int classifyConstantValue(Expr *Constant) { |
11732 | |
11733 | |
11734 | enum ConstantValueKind { |
11735 | Miscellaneous = 0, |
11736 | LiteralTrue, |
11737 | LiteralFalse |
11738 | }; |
11739 | if (auto *BL = dyn_cast<CXXBoolLiteralExpr>(Constant)) |
11740 | return BL->getValue() ? ConstantValueKind::LiteralTrue |
11741 | : ConstantValueKind::LiteralFalse; |
11742 | return ConstantValueKind::Miscellaneous; |
11743 | } |
11744 | |
11745 | static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E, |
11746 | Expr *Constant, Expr *Other, |
11747 | const llvm::APSInt &Value, |
11748 | bool RhsConstant) { |
11749 | if (S.inTemplateInstantiation()) |
11750 | return false; |
11751 | |
11752 | Expr *OriginalOther = Other; |
11753 | |
11754 | Constant = Constant->IgnoreParenImpCasts(); |
11755 | Other = Other->IgnoreParenImpCasts(); |
11756 | |
11757 | |
11758 | |
11759 | |
11760 | |
11761 | |
11762 | |
11763 | |
11764 | if (Constant->getType()->isEnumeralType() && |
11765 | S.Context.hasSameUnqualifiedType(Constant->getType(), Other->getType())) |
11766 | return false; |
11767 | |
11768 | IntRange OtherValueRange = GetExprRange( |
11769 | S.Context, Other, S.isConstantEvaluated(), false); |
11770 | |
11771 | QualType OtherT = Other->getType(); |
11772 | if (const auto *AT = OtherT->getAs<AtomicType>()) |
11773 | OtherT = AT->getValueType(); |
11774 | IntRange OtherTypeRange = IntRange::forValueOfType(S.Context, OtherT); |
11775 | |
11776 | |
11777 | |
11778 | bool IsObjCSignedCharBool = S.getLangOpts().ObjC && |
11779 | S.NSAPIObj->isObjCBOOLType(OtherT) && |
11780 | OtherT->isSpecificBuiltinType(BuiltinType::SChar); |
11781 | |
11782 | |
11783 | |
11784 | bool OtherIsBooleanDespiteType = |
11785 | !OtherT->isBooleanType() && Other->isKnownToHaveBooleanValue(); |
11786 | if (OtherIsBooleanDespiteType || IsObjCSignedCharBool) |
11787 | OtherTypeRange = OtherValueRange = IntRange::forBoolType(); |
11788 | |
11789 | |
11790 | |
11791 | PromotedRange OtherPromotedValueRange(OtherValueRange, Value.getBitWidth(), |
11792 | Value.isUnsigned()); |
11793 | auto Cmp = OtherPromotedValueRange.compare(Value); |
11794 | auto Result = PromotedRange::constantValue(E->getOpcode(), Cmp, RhsConstant); |
11795 | if (!Result) |
11796 | return false; |
11797 | |
11798 | |
11799 | |
11800 | bool TautologicalTypeCompare = false; |
11801 | { |
11802 | PromotedRange OtherPromotedTypeRange(OtherTypeRange, Value.getBitWidth(), |
11803 | Value.isUnsigned()); |
11804 | auto TypeCmp = OtherPromotedTypeRange.compare(Value); |
11805 | if (auto TypeResult = PromotedRange::constantValue(E->getOpcode(), TypeCmp, |
11806 | RhsConstant)) { |
11807 | TautologicalTypeCompare = true; |
11808 | Cmp = TypeCmp; |
11809 | Result = TypeResult; |
11810 | } |
11811 | } |
11812 | |
11813 | |
11814 | |
11815 | if (!TautologicalTypeCompare && OtherValueRange.Width == 0) |
11816 | return false; |
11817 | |
11818 | |
11819 | |
11820 | |
11821 | |
11822 | |
11823 | |
11824 | bool InRange = Cmp & PromotedRange::InRangeFlag; |
11825 | if (InRange && IsEnumConstOrFromMacro(S, Constant)) |
11826 | return false; |
11827 | |
11828 | |
11829 | |
11830 | if (Other->refersToBitField() && InRange && Value == 0 && |
11831 | Other->getType()->isUnsignedIntegerOrEnumerationType()) |
11832 | TautologicalTypeCompare = true; |
11833 | |
11834 | |
11835 | |
11836 | const EnumConstantDecl *ED = nullptr; |
11837 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Constant)) |
11838 | ED = dyn_cast<EnumConstantDecl>(DR->getDecl()); |
11839 | |
11840 | |
11841 | SmallString<64> PrettySourceValue; |
11842 | llvm::raw_svector_ostream OS(PrettySourceValue); |
11843 | if (ED) { |
11844 | OS << '\'' << *ED << "' (" << Value << ")"; |
11845 | } else if (auto *BL = dyn_cast<ObjCBoolLiteralExpr>( |
11846 | Constant->IgnoreParenImpCasts())) { |
11847 | OS << (BL->getValue() ? "YES" : "NO"); |
11848 | } else { |
11849 | OS << Value; |
11850 | } |
11851 | |
11852 | if (!TautologicalTypeCompare) { |
11853 | S.Diag(E->getOperatorLoc(), diag::warn_tautological_compare_value_range) |
11854 | << RhsConstant << OtherValueRange.Width << OtherValueRange.NonNegative |
11855 | << E->getOpcodeStr() << OS.str() << *Result |
11856 | << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); |
11857 | return true; |
11858 | } |
11859 | |
11860 | if (IsObjCSignedCharBool) { |
11861 | S.DiagRuntimeBehavior(E->getOperatorLoc(), E, |
11862 | S.PDiag(diag::warn_tautological_compare_objc_bool) |
11863 | << OS.str() << *Result); |
11864 | return true; |
11865 | } |
11866 | |
11867 | |
11868 | |
11869 | |
11870 | if (!InRange || Other->isKnownToHaveBooleanValue()) { |
11871 | |
11872 | S.DiagRuntimeBehavior( |
11873 | E->getOperatorLoc(), E, |
11874 | S.PDiag(!InRange ? diag::warn_out_of_range_compare |
11875 | : diag::warn_tautological_bool_compare) |
11876 | << OS.str() << classifyConstantValue(Constant) << OtherT |
11877 | << OtherIsBooleanDespiteType << *Result |
11878 | << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); |
11879 | } else { |
11880 | bool IsCharTy = OtherT.withoutLocalFastQualifiers() == S.Context.CharTy; |
11881 | unsigned Diag = |
11882 | (isKnownToHaveUnsignedValue(OriginalOther) && Value == 0) |
11883 | ? (HasEnumType(OriginalOther) |
11884 | ? diag::warn_unsigned_enum_always_true_comparison |
11885 | : IsCharTy ? diag::warn_unsigned_char_always_true_comparison |
11886 | : diag::warn_unsigned_always_true_comparison) |
11887 | : diag::warn_tautological_constant_compare; |
11888 | |
11889 | S.Diag(E->getOperatorLoc(), Diag) |
11890 | << RhsConstant << OtherT << E->getOpcodeStr() << OS.str() << *Result |
11891 | << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); |
11892 | } |
11893 | |
11894 | return true; |
11895 | } |
11896 | |
11897 | |
11898 | |
11899 | static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { |
11900 | AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); |
11901 | AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); |
11902 | } |
11903 | |
11904 | |
11905 | |
11906 | |
11907 | static void AnalyzeComparison(Sema &S, BinaryOperator *E) { |
11908 | |
11909 | QualType T = E->getLHS()->getType(); |
11910 | |
11911 | |
11912 | |
11913 | if (!S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType())) |
11914 | return AnalyzeImpConvsInComparison(S, E); |
11915 | |
11916 | |
11917 | if (E->isValueDependent()) |
11918 | return AnalyzeImpConvsInComparison(S, E); |
11919 | |
11920 | Expr *LHS = E->getLHS(); |
11921 | Expr *RHS = E->getRHS(); |
11922 | |
11923 | if (T->isIntegralType(S.Context)) { |
11924 | Optional<llvm::APSInt> RHSValue = RHS->getIntegerConstantExpr(S.Context); |
11925 | Optional<llvm::APSInt> LHSValue = LHS->getIntegerConstantExpr(S.Context); |
11926 | |
11927 | |
11928 | if (RHSValue && LHSValue) |
11929 | return AnalyzeImpConvsInComparison(S, E); |
11930 | |
11931 | |
11932 | if ((bool)RHSValue ^ (bool)LHSValue) { |
11933 | |
11934 | const bool RhsConstant = (bool)RHSValue; |
11935 | Expr *Const = RhsConstant ? RHS : LHS; |
11936 | Expr *Other = RhsConstant ? LHS : RHS; |
11937 | const llvm::APSInt &Value = RhsConstant ? *RHSValue : *LHSValue; |
11938 | |
11939 | |
11940 | |
11941 | if (CheckTautologicalComparison(S, E, Const, Other, Value, RhsConstant)) |
11942 | return AnalyzeImpConvsInComparison(S, E); |
11943 | } |
11944 | } |
11945 | |
11946 | if (!T->hasUnsignedIntegerRepresentation()) { |
11947 | |
11948 | |
11949 | |
11950 | return AnalyzeImpConvsInComparison(S, E); |
11951 | } |
11952 | |
11953 | LHS = LHS->IgnoreParenImpCasts(); |
11954 | RHS = RHS->IgnoreParenImpCasts(); |
11955 | |
11956 | if (!S.getLangOpts().CPlusPlus) { |
11957 | |
11958 | |
11959 | |
11960 | if (const auto *TET = dyn_cast<TypeOfExprType>(LHS->getType())) |
11961 | LHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); |
11962 | if (const auto *TET = dyn_cast<TypeOfExprType>(RHS->getType())) |
11963 | RHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); |
11964 | } |
11965 | |
11966 | |
11967 | |
11968 | Expr *signedOperand, *unsignedOperand; |
11969 | if (LHS->getType()->hasSignedIntegerRepresentation()) { |
11970 | assert(!RHS->getType()->hasSignedIntegerRepresentation() && |
11971 | "unsigned comparison between two signed integer expressions?"); |
11972 | signedOperand = LHS; |
11973 | unsignedOperand = RHS; |
11974 | } else if (RHS->getType()->hasSignedIntegerRepresentation()) { |
11975 | signedOperand = RHS; |
11976 | unsignedOperand = LHS; |
11977 | } else { |
11978 | return AnalyzeImpConvsInComparison(S, E); |
11979 | } |
11980 | |
11981 | |
11982 | IntRange signedRange = GetExprRange( |
11983 | S.Context, signedOperand, S.isConstantEvaluated(), true); |
11984 | |
11985 | |
11986 | |
11987 | AnalyzeImplicitConversions(S, LHS, E->getOperatorLoc()); |
11988 | AnalyzeImplicitConversions(S, RHS, E->getOperatorLoc()); |
11989 | |
11990 | |
11991 | if (signedRange.NonNegative) |
11992 | return; |
11993 | |
11994 | |
11995 | |
11996 | |
11997 | |
11998 | if (E->isEqualityOp()) { |
11999 | unsigned comparisonWidth = S.Context.getIntWidth(T); |
12000 | IntRange unsignedRange = |
12001 | GetExprRange(S.Context, unsignedOperand, S.isConstantEvaluated(), |
12002 | true); |
12003 | |
12004 | |
12005 | |
12006 | assert(unsignedRange.NonNegative && "unsigned range includes negative?"); |
12007 | |
12008 | if (unsignedRange.Width < comparisonWidth) |
12009 | return; |
12010 | } |
12011 | |
12012 | S.DiagRuntimeBehavior(E->getOperatorLoc(), E, |
12013 | S.PDiag(diag::warn_mixed_sign_comparison) |
12014 | << LHS->getType() << RHS->getType() |
12015 | << LHS->getSourceRange() << RHS->getSourceRange()); |
12016 | } |
12017 | |
12018 | |
12019 | |
12020 | |
12021 | static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, |
12022 | SourceLocation InitLoc) { |
12023 | assert(Bitfield->isBitField()); |
12024 | if (Bitfield->isInvalidDecl()) |
12025 | return false; |
12026 | |
12027 | |
12028 | QualType BitfieldType = Bitfield->getType(); |
12029 | if (BitfieldType->isBooleanType()) |
12030 | return false; |
12031 | |
12032 | if (BitfieldType->isEnumeralType()) { |
12033 | EnumDecl *BitfieldEnumDecl = BitfieldType->castAs<EnumType>()->getDecl(); |
12034 | |
12035 | |
12036 | |
12037 | if (S.getLangOpts().CPlusPlus11 && |
12038 | !BitfieldEnumDecl->getIntegerTypeSourceInfo() && |
12039 | BitfieldEnumDecl->getNumPositiveBits() > 0 && |
12040 | BitfieldEnumDecl->getNumNegativeBits() == 0) { |
12041 | S.Diag(InitLoc, diag::warn_no_underlying_type_specified_for_enum_bitfield) |
12042 | << BitfieldEnumDecl; |
12043 | } |
12044 | } |
12045 | |
12046 | if (Bitfield->getType()->isBooleanType()) |
12047 | return false; |
12048 | |
12049 | |
12050 | if (Bitfield->getBitWidth()->isValueDependent() || |
12051 | Bitfield->getBitWidth()->isTypeDependent() || |
12052 | Init->isValueDependent() || |
12053 | Init->isTypeDependent()) |
12054 | return false; |
12055 | |
12056 | Expr *OriginalInit = Init->IgnoreParenImpCasts(); |
12057 | unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context); |
12058 | |
12059 | Expr::EvalResult Result; |
12060 | if (!OriginalInit->EvaluateAsInt(Result, S.Context, |
12061 | Expr::SE_AllowSideEffects)) { |
12062 | |
12063 | |
12064 | |
12065 | if (const auto *EnumTy = OriginalInit->getType()->getAs<EnumType>()) { |
12066 | EnumDecl *ED = EnumTy->getDecl(); |
12067 | bool SignedBitfield = BitfieldType->isSignedIntegerType(); |
12068 | |
12069 | |
12070 | |
12071 | |
12072 | bool SignedEnum = ED->getNumNegativeBits() > 0; |
12073 | |
12074 | |
12075 | |
12076 | |
12077 | |
12078 | |
12079 | unsigned DiagID = 0; |
12080 | if (SignedEnum && !SignedBitfield) { |
12081 | DiagID = diag::warn_unsigned_bitfield_assigned_signed_enum; |
12082 | } else if (SignedBitfield && !SignedEnum && |
12083 | ED->getNumPositiveBits() == FieldWidth) { |
12084 | DiagID = diag::warn_signed_bitfield_enum_conversion; |
12085 | } |
12086 | |
12087 | if (DiagID) { |
12088 | S.Diag(InitLoc, DiagID) << Bitfield << ED; |
12089 | TypeSourceInfo *TSI = Bitfield->getTypeSourceInfo(); |
12090 | SourceRange TypeRange = |
12091 | TSI ? TSI->getTypeLoc().getSourceRange() : SourceRange(); |
12092 | S.Diag(Bitfield->getTypeSpecStartLoc(), diag::note_change_bitfield_sign) |
12093 | << SignedEnum << TypeRange; |
12094 | } |
12095 | |
12096 | |
12097 | |
12098 | |
12099 | unsigned BitsNeeded = SignedEnum ? std::max(ED->getNumPositiveBits() + 1, |
12100 | ED->getNumNegativeBits()) |
12101 | : ED->getNumPositiveBits(); |
12102 | |
12103 | |
12104 | if (BitsNeeded > FieldWidth) { |
12105 | Expr *WidthExpr = Bitfield->getBitWidth(); |
12106 | S.Diag(InitLoc, diag::warn_bitfield_too_small_for_enum) |
12107 | << Bitfield << ED; |
12108 | S.Diag(WidthExpr->getExprLoc(), diag::note_widen_bitfield) |
12109 | << BitsNeeded << ED << WidthExpr->getSourceRange(); |
12110 | } |
12111 | } |
12112 | |
12113 | return false; |
12114 | } |
12115 | |
12116 | llvm::APSInt Value = Result.Val.getInt(); |
12117 | |
12118 | unsigned OriginalWidth = Value.getBitWidth(); |
12119 | |
12120 | if (!Value.isSigned() || Value.isNegative()) |
12121 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(OriginalInit)) |
12122 | if (UO->getOpcode() == UO_Minus || UO->getOpcode() == UO_Not) |
12123 | OriginalWidth = Value.getMinSignedBits(); |
12124 | |
12125 | if (OriginalWidth <= FieldWidth) |
12126 | return false; |
12127 | |
12128 | |
12129 | llvm::APSInt TruncatedValue = Value.trunc(FieldWidth); |
12130 | TruncatedValue.setIsSigned(BitfieldType->isSignedIntegerType()); |
12131 | |
12132 | |
12133 | TruncatedValue = TruncatedValue.extend(OriginalWidth); |
12134 | if (llvm::APSInt::isSameValue(Value, TruncatedValue)) |
12135 | return false; |
12136 | |
12137 | |
12138 | |
12139 | if (FieldWidth == 1 && Value == 1) |
12140 | return false; |
12141 | |
12142 | std::string PrettyValue = toString(Value, 10); |
12143 | std::string PrettyTrunc = toString(TruncatedValue, 10); |
12144 | |
12145 | S.Diag(InitLoc, diag::warn_impcast_bitfield_precision_constant) |
12146 | << PrettyValue << PrettyTrunc << OriginalInit->getType() |
12147 | << Init->getSourceRange(); |
12148 | |
12149 | return true; |
12150 | } |
12151 | |
12152 | |
12153 | |
12154 | static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { |
12155 | |
12156 | AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); |
12157 | |
12158 | |
12159 | |
12160 | if (FieldDecl *Bitfield = E->getLHS()->getSourceBitField()) { |
12161 | if (AnalyzeBitFieldAssignment(S, Bitfield, E->getRHS(), |
12162 | E->getOperatorLoc())) { |
12163 | |
12164 | return AnalyzeImplicitConversions(S, E->getRHS()->IgnoreParenImpCasts(), |
12165 | E->getOperatorLoc()); |
12166 | } |
12167 | } |
12168 | |
12169 | AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); |
12170 | |
12171 | |
12172 | if (E->getLHS()->getType()->isAtomicType()) |
12173 | S.Diag(E->getRHS()->getBeginLoc(), diag::warn_atomic_implicit_seq_cst); |
12174 | } |
12175 | |
12176 | |
12177 | static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, |
12178 | SourceLocation CContext, unsigned diag, |
12179 | bool pruneControlFlow = false) { |
12180 | if (pruneControlFlow) { |
12181 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12182 | S.PDiag(diag) |
12183 | << SourceType << T << E->getSourceRange() |
12184 | << SourceRange(CContext)); |
12185 | return; |
12186 | } |
12187 | S.Diag(E->getExprLoc(), diag) |
12188 | << SourceType << T << E->getSourceRange() << SourceRange(CContext); |
12189 | } |
12190 | |
12191 | |
12192 | static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, |
12193 | SourceLocation CContext, |
12194 | unsigned diag, bool pruneControlFlow = false) { |
12195 | DiagnoseImpCast(S, E, E->getType(), T, CContext, diag, pruneControlFlow); |
12196 | } |
12197 | |
12198 | static bool isObjCSignedCharBool(Sema &S, QualType Ty) { |
12199 | return Ty->isSpecificBuiltinType(BuiltinType::SChar) && |
12200 | S.getLangOpts().ObjC && S.NSAPIObj->isObjCBOOLType(Ty); |
12201 | } |
12202 | |
12203 | static void adornObjCBoolConversionDiagWithTernaryFixit( |
12204 | Sema &S, Expr *SourceExpr, const Sema::SemaDiagnosticBuilder &Builder) { |
12205 | Expr *Ignored = SourceExpr->IgnoreImplicit(); |
12206 | if (const auto *OVE = dyn_cast<OpaqueValueExpr>(Ignored)) |
12207 | Ignored = OVE->getSourceExpr(); |
12208 | bool NeedsParens = isa<AbstractConditionalOperator>(Ignored) || |
12209 | isa<BinaryOperator>(Ignored) || |
12210 | isa<CXXOperatorCallExpr>(Ignored); |
12211 | SourceLocation EndLoc = S.getLocForEndOfToken(SourceExpr->getEndLoc()); |
12212 | if (NeedsParens) |
12213 | Builder << FixItHint::CreateInsertion(SourceExpr->getBeginLoc(), "(") |
12214 | << FixItHint::CreateInsertion(EndLoc, ")"); |
12215 | Builder << FixItHint::CreateInsertion(EndLoc, " ? YES : NO"); |
12216 | } |
12217 | |
12218 | |
12219 | static void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, |
12220 | SourceLocation CContext) { |
12221 | const bool IsBool = T->isSpecificBuiltinType(BuiltinType::Bool); |
12222 | const bool PruneWarnings = S.inTemplateInstantiation(); |
12223 | |
12224 | Expr *InnerE = E->IgnoreParenImpCasts(); |
12225 | |
12226 | if (UnaryOperator *UOp = dyn_cast<UnaryOperator>(InnerE)) |
12227 | if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) |
12228 | InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); |
12229 | |
12230 | const bool IsLiteral = |
12231 | isa<FloatingLiteral>(E) || isa<FloatingLiteral>(InnerE); |
12232 | |
12233 | llvm::APFloat Value(0.0); |
12234 | bool IsConstant = |
12235 | E->EvaluateAsFloat(Value, S.Context, Expr::SE_AllowSideEffects); |
12236 | if (!IsConstant) { |
12237 | if (isObjCSignedCharBool(S, T)) { |
12238 | return adornObjCBoolConversionDiagWithTernaryFixit( |
12239 | S, E, |
12240 | S.Diag(CContext, diag::warn_impcast_float_to_objc_signed_char_bool) |
12241 | << E->getType()); |
12242 | } |
12243 | |
12244 | return DiagnoseImpCast(S, E, T, CContext, |
12245 | diag::warn_impcast_float_integer, PruneWarnings); |
12246 | } |
12247 | |
12248 | bool isExact = false; |
12249 | |
12250 | llvm::APSInt IntegerValue(S.Context.getIntWidth(T), |
12251 | T->hasUnsignedIntegerRepresentation()); |
12252 | llvm::APFloat::opStatus Result = Value.convertToInteger( |
12253 | IntegerValue, llvm::APFloat::rmTowardZero, &isExact); |
12254 | |
12255 | |
12256 | |
12257 | |
12258 | |
12259 | |
12260 | SmallString<16> PrettySourceValue; |
12261 | unsigned precision = llvm::APFloat::semanticsPrecision(Value.getSemantics()); |
12262 | precision = (precision * 59 + 195) / 196; |
12263 | Value.toString(PrettySourceValue, precision); |
12264 | |
12265 | if (isObjCSignedCharBool(S, T) && IntegerValue != 0 && IntegerValue != 1) { |
12266 | return adornObjCBoolConversionDiagWithTernaryFixit( |
12267 | S, E, |
12268 | S.Diag(CContext, diag::warn_impcast_constant_value_to_objc_bool) |
12269 | << PrettySourceValue); |
12270 | } |
12271 | |
12272 | if (Result == llvm::APFloat::opOK && isExact) { |
12273 | if (IsLiteral) return; |
12274 | return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, |
12275 | PruneWarnings); |
12276 | } |
12277 | |
12278 | |
12279 | |
12280 | if (!IsBool && Result == llvm::APFloat::opInvalidOp) |
12281 | return DiagnoseImpCast( |
12282 | S, E, T, CContext, |
12283 | IsLiteral ? diag::warn_impcast_literal_float_to_integer_out_of_range |
12284 | : diag::warn_impcast_float_to_integer_out_of_range, |
12285 | PruneWarnings); |
12286 | |
12287 | unsigned DiagID = 0; |
12288 | if (IsLiteral) { |
12289 | |
12290 | DiagID = diag::warn_impcast_literal_float_to_integer; |
12291 | } else if (IntegerValue == 0) { |
12292 | if (Value.isZero()) { |
12293 | return DiagnoseImpCast(S, E, T, CContext, |
12294 | diag::warn_impcast_float_integer, PruneWarnings); |
12295 | } |
12296 | |
12297 | DiagID = diag::warn_impcast_float_to_integer_zero; |
12298 | } else { |
12299 | if (IntegerValue.isUnsigned()) { |
12300 | if (!IntegerValue.isMaxValue()) { |
12301 | return DiagnoseImpCast(S, E, T, CContext, |
12302 | diag::warn_impcast_float_integer, PruneWarnings); |
12303 | } |
12304 | } else { |
12305 | if (!IntegerValue.isMaxSignedValue() && |
12306 | !IntegerValue.isMinSignedValue()) { |
12307 | return DiagnoseImpCast(S, E, T, CContext, |
12308 | diag::warn_impcast_float_integer, PruneWarnings); |
12309 | } |
12310 | } |
12311 | |
12312 | DiagID = diag::warn_impcast_float_to_integer; |
12313 | } |
12314 | |
12315 | SmallString<16> PrettyTargetValue; |
12316 | if (IsBool) |
12317 | PrettyTargetValue = Value.isZero() ? "false" : "true"; |
12318 | else |
12319 | IntegerValue.toString(PrettyTargetValue); |
12320 | |
12321 | if (PruneWarnings) { |
12322 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12323 | S.PDiag(DiagID) |
12324 | << E->getType() << T.getUnqualifiedType() |
12325 | << PrettySourceValue << PrettyTargetValue |
12326 | << E->getSourceRange() << SourceRange(CContext)); |
12327 | } else { |
12328 | S.Diag(E->getExprLoc(), DiagID) |
12329 | << E->getType() << T.getUnqualifiedType() << PrettySourceValue |
12330 | << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext); |
12331 | } |
12332 | } |
12333 | |
12334 | |
12335 | |
12336 | static void AnalyzeCompoundAssignment(Sema &S, BinaryOperator *E) { |
12337 | assert(isa<CompoundAssignOperator>(E) && |
12338 | "Must be compound assignment operation"); |
12339 | |
12340 | AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); |
12341 | AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); |
12342 | |
12343 | if (E->getLHS()->getType()->isAtomicType()) |
12344 | S.Diag(E->getOperatorLoc(), diag::warn_atomic_implicit_seq_cst); |
12345 | |
12346 | |
12347 | const auto *ResultBT = E->getLHS()->getType()->getAs<BuiltinType>(); |
12348 | const auto *RBT = cast<CompoundAssignOperator>(E) |
12349 | ->getComputationResultType() |
12350 | ->getAs<BuiltinType>(); |
12351 | |
12352 | |
12353 | if (!ResultBT || !RBT || !RBT->isFloatingPoint()) return; |
12354 | |
12355 | |
12356 | if (ResultBT->isInteger()) |
12357 | return DiagnoseImpCast(S, E, E->getRHS()->getType(), E->getLHS()->getType(), |
12358 | E->getExprLoc(), diag::warn_impcast_float_integer); |
12359 | |
12360 | if (!ResultBT->isFloatingPoint()) |
12361 | return; |
12362 | |
12363 | |
12364 | int Order = S.getASTContext().getFloatingTypeSemanticOrder( |
12365 | QualType(ResultBT, 0), QualType(RBT, 0)); |
12366 | if (Order < 0 && !S.SourceMgr.isInSystemMacro(E->getOperatorLoc())) |
12367 | |
12368 | DiagnoseImpCast(S, E->getRHS(), E->getLHS()->getType(), E->getOperatorLoc(), |
12369 | diag::warn_impcast_float_result_precision); |
12370 | } |
12371 | |
12372 | static std::string PrettyPrintInRange(const llvm::APSInt &Value, |
12373 | IntRange Range) { |
12374 | if (!Range.Width) return "0"; |
12375 | |
12376 | llvm::APSInt ValueInRange = Value; |
12377 | ValueInRange.setIsSigned(!Range.NonNegative); |
12378 | ValueInRange = ValueInRange.trunc(Range.Width); |
12379 | return toString(ValueInRange, 10); |
12380 | } |
12381 | |
12382 | static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { |
12383 | if (!isa<ImplicitCastExpr>(Ex)) |
12384 | return false; |
12385 | |
12386 | Expr *InnerE = Ex->IgnoreParenImpCasts(); |
12387 | const Type *Target = S.Context.getCanonicalType(Ex->getType()).getTypePtr(); |
12388 | const Type *Source = |
12389 | S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); |
12390 | if (Target->isDependentType()) |
12391 | return false; |
12392 | |
12393 | const BuiltinType *FloatCandidateBT = |
12394 | dyn_cast<BuiltinType>(ToBool ? Source : Target); |
12395 | const Type *BoolCandidateType = ToBool ? Target : Source; |
12396 | |
12397 | return (BoolCandidateType->isSpecificBuiltinType(BuiltinType::Bool) && |
12398 | FloatCandidateBT && (FloatCandidateBT->isFloatingPoint())); |
12399 | } |
12400 | |
12401 | static void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, |
12402 | SourceLocation CC) { |
12403 | unsigned NumArgs = TheCall->getNumArgs(); |
12404 | for (unsigned i = 0; i < NumArgs; ++i) { |
12405 | Expr *CurrA = TheCall->getArg(i); |
12406 | if (!IsImplicitBoolFloatConversion(S, CurrA, true)) |
12407 | continue; |
12408 | |
12409 | bool IsSwapped = ((i > 0) && |
12410 | IsImplicitBoolFloatConversion(S, TheCall->getArg(i - 1), false)); |
12411 | IsSwapped |= ((i < (NumArgs - 1)) && |
12412 | IsImplicitBoolFloatConversion(S, TheCall->getArg(i + 1), false)); |
12413 | if (IsSwapped) { |
12414 | |
12415 | DiagnoseImpCast(S, CurrA->IgnoreParenImpCasts(), |
12416 | CurrA->getType(), CC, |
12417 | diag::warn_impcast_floating_point_to_bool); |
12418 | } |
12419 | } |
12420 | } |
12421 | |
12422 | static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, |
12423 | SourceLocation CC) { |
12424 | if (S.Diags.isIgnored(diag::warn_impcast_null_pointer_to_integer, |
12425 | E->getExprLoc())) |
12426 | return; |
12427 | |
12428 | |
12429 | if (isa<CallExpr>(E)) |
12430 | return; |
12431 | |
12432 | |
12433 | const Expr::NullPointerConstantKind NullKind = |
12434 | E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull); |
12435 | if (NullKind != Expr::NPCK_GNUNull && NullKind != Expr::NPCK_CXX11_nullptr) |
12436 | return; |
12437 | |
12438 | |
12439 | if (T->isAnyPointerType() || T->isBlockPointerType() || |
12440 | T->isMemberPointerType() || !T->isScalarType() || T->isNullPtrType()) |
12441 | return; |
12442 | |
12443 | SourceLocation Loc = E->getSourceRange().getBegin(); |
12444 | |
12445 | |
12446 | |
12447 | |
12448 | Loc = S.SourceMgr.getTopMacroCallerLoc(Loc); |
12449 | CC = S.SourceMgr.getTopMacroCallerLoc(CC); |
12450 | |
12451 | |
12452 | if (NullKind == Expr::NPCK_GNUNull && Loc.isMacroID()) { |
12453 | StringRef MacroName = Lexer::getImmediateMacroNameForDiagnostics( |
12454 | Loc, S.SourceMgr, S.getLangOpts()); |
12455 | if (MacroName == "NULL") |
12456 | Loc = S.SourceMgr.getImmediateExpansionRange(Loc).getBegin(); |
12457 | } |
12458 | |
12459 | |
12460 | if (S.SourceMgr.getFileID(Loc) != S.SourceMgr.getFileID(CC)) |
12461 | return; |
12462 | |
12463 | S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) |
12464 | << (NullKind == Expr::NPCK_CXX11_nullptr) << T << SourceRange(CC) |
12465 | << FixItHint::CreateReplacement(Loc, |
12466 | S.getFixItZeroLiteralForType(T, Loc)); |
12467 | } |
12468 | |
12469 | static void checkObjCArrayLiteral(Sema &S, QualType TargetType, |
12470 | ObjCArrayLiteral *ArrayLiteral); |
12471 | |
12472 | static void |
12473 | checkObjCDictionaryLiteral(Sema &S, QualType TargetType, |
12474 | ObjCDictionaryLiteral *DictionaryLiteral); |
12475 | |
12476 | |
12477 | |
12478 | static void checkObjCCollectionLiteralElement(Sema &S, |
12479 | QualType TargetElementType, |
12480 | Expr *Element, |
12481 | unsigned ElementKind) { |
12482 | |
12483 | if (auto ICE = dyn_cast<ImplicitCastExpr>(Element)) { |
12484 | if (ICE->getCastKind() == CK_BitCast && |
12485 | ICE->getSubExpr()->getType()->getAs<ObjCObjectPointerType>()) |
12486 | Element = ICE->getSubExpr(); |
12487 | } |
12488 | |
12489 | QualType ElementType = Element->getType(); |
12490 | ExprResult ElementResult(Element); |
12491 | if (ElementType->getAs<ObjCObjectPointerType>() && |
12492 | S.CheckSingleAssignmentConstraints(TargetElementType, |
12493 | ElementResult, |
12494 | false, false) |
12495 | != Sema::Compatible) { |
12496 | S.Diag(Element->getBeginLoc(), diag::warn_objc_collection_literal_element) |
12497 | << ElementType << ElementKind << TargetElementType |
12498 | << Element->getSourceRange(); |
12499 | } |
12500 | |
12501 | if (auto ArrayLiteral = dyn_cast<ObjCArrayLiteral>(Element)) |
12502 | checkObjCArrayLiteral(S, TargetElementType, ArrayLiteral); |
12503 | else if (auto DictionaryLiteral = dyn_cast<ObjCDictionaryLiteral>(Element)) |
12504 | checkObjCDictionaryLiteral(S, TargetElementType, DictionaryLiteral); |
12505 | } |
12506 | |
12507 | |
12508 | |
12509 | static void checkObjCArrayLiteral(Sema &S, QualType TargetType, |
12510 | ObjCArrayLiteral *ArrayLiteral) { |
12511 | if (!S.NSArrayDecl) |
12512 | return; |
12513 | |
12514 | const auto *TargetObjCPtr = TargetType->getAs<ObjCObjectPointerType>(); |
12515 | if (!TargetObjCPtr) |
12516 | return; |
12517 | |
12518 | if (TargetObjCPtr->isUnspecialized() || |
12519 | TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl() |
12520 | != S.NSArrayDecl->getCanonicalDecl()) |
12521 | return; |
12522 | |
12523 | auto TypeArgs = TargetObjCPtr->getTypeArgs(); |
12524 | if (TypeArgs.size() != 1) |
12525 | return; |
12526 | |
12527 | QualType TargetElementType = TypeArgs[0]; |
12528 | for (unsigned I = 0, N = ArrayLiteral->getNumElements(); I != N; ++I) { |
12529 | checkObjCCollectionLiteralElement(S, TargetElementType, |
12530 | ArrayLiteral->getElement(I), |
12531 | 0); |
12532 | } |
12533 | } |
12534 | |
12535 | |
12536 | |
12537 | static void |
12538 | checkObjCDictionaryLiteral(Sema &S, QualType TargetType, |
12539 | ObjCDictionaryLiteral *DictionaryLiteral) { |
12540 | if (!S.NSDictionaryDecl) |
12541 | return; |
12542 | |
12543 | const auto *TargetObjCPtr = TargetType->getAs<ObjCObjectPointerType>(); |
12544 | if (!TargetObjCPtr) |
12545 | return; |
12546 | |
12547 | if (TargetObjCPtr->isUnspecialized() || |
12548 | TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl() |
12549 | != S.NSDictionaryDecl->getCanonicalDecl()) |
12550 | return; |
12551 | |
12552 | auto TypeArgs = TargetObjCPtr->getTypeArgs(); |
12553 | if (TypeArgs.size() != 2) |
12554 | return; |
12555 | |
12556 | QualType TargetKeyType = TypeArgs[0]; |
12557 | QualType TargetObjectType = TypeArgs[1]; |
12558 | for (unsigned I = 0, N = DictionaryLiteral->getNumElements(); I != N; ++I) { |
12559 | auto Element = DictionaryLiteral->getKeyValueElement(I); |
12560 | checkObjCCollectionLiteralElement(S, TargetKeyType, Element.Key, 1); |
12561 | checkObjCCollectionLiteralElement(S, TargetObjectType, Element.Value, 2); |
12562 | } |
12563 | } |
12564 | |
12565 | |
12566 | |
12567 | static bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, |
12568 | SourceLocation CC) { |
12569 | |
12570 | |
12571 | |
12572 | if (auto *IntLit = dyn_cast<IntegerLiteral>(E->IgnoreParenImpCasts())) { |
12573 | const char FirstLiteralCharacter = |
12574 | S.getSourceManager().getCharacterData(IntLit->getBeginLoc())[0]; |
12575 | if (FirstLiteralCharacter == '0') |
12576 | return false; |
12577 | } |
12578 | |
12579 | |
12580 | |
12581 | if (CC.isValid() && T->isCharType()) { |
12582 | const char FirstContextCharacter = |
12583 | S.getSourceManager().getCharacterData(CC)[0]; |
12584 | if (FirstContextCharacter == '{') |
12585 | return false; |
12586 | } |
12587 | |
12588 | return true; |
12589 | } |
12590 | |
12591 | static const IntegerLiteral *getIntegerLiteral(Expr *E) { |
12592 | const auto *IL = dyn_cast<IntegerLiteral>(E); |
12593 | if (!IL) { |
12594 | if (auto *UO = dyn_cast<UnaryOperator>(E)) { |
12595 | if (UO->getOpcode() == UO_Minus) |
12596 | return dyn_cast<IntegerLiteral>(UO->getSubExpr()); |
12597 | } |
12598 | } |
12599 | |
12600 | return IL; |
12601 | } |
12602 | |
12603 | static void DiagnoseIntInBoolContext(Sema &S, Expr *E) { |
12604 | E = E->IgnoreParenImpCasts(); |
12605 | SourceLocation ExprLoc = E->getExprLoc(); |
12606 | |
12607 | if (const auto *BO = dyn_cast<BinaryOperator>(E)) { |
12608 | BinaryOperator::Opcode Opc = BO->getOpcode(); |
12609 | Expr::EvalResult Result; |
12610 | |
12611 | if (Opc == BO_Shl) { |
12612 | const auto *LHS = getIntegerLiteral(BO->getLHS()); |
12613 | const auto *RHS = getIntegerLiteral(BO->getRHS()); |
12614 | if (LHS && LHS->getValue() == 0) |
12615 | S.Diag(ExprLoc, diag::warn_left_shift_always) << 0; |
12616 | else if (!E->isValueDependent() && LHS && RHS && |
12617 | RHS->getValue().isNonNegative() && |
12618 | E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) |
12619 | S.Diag(ExprLoc, diag::warn_left_shift_always) |
12620 | << (Result.Val.getInt() != 0); |
12621 | else if (E->getType()->isSignedIntegerType()) |
12622 | S.Diag(ExprLoc, diag::warn_left_shift_in_bool_context) << E; |
12623 | } |
12624 | } |
12625 | |
12626 | if (const auto *CO = dyn_cast<ConditionalOperator>(E)) { |
12627 | const auto *LHS = getIntegerLiteral(CO->getTrueExpr()); |
12628 | const auto *RHS = getIntegerLiteral(CO->getFalseExpr()); |
12629 | if (!LHS || !RHS) |
12630 | return; |
12631 | if ((LHS->getValue() == 0 || LHS->getValue() == 1) && |
12632 | (RHS->getValue() == 0 || RHS->getValue() == 1)) |
12633 | |
12634 | return; |
12635 | if (LHS->getValue() != 0 && RHS->getValue() != 0) |
12636 | S.Diag(ExprLoc, diag::warn_integer_constants_in_conditional_always_true); |
12637 | } |
12638 | } |
12639 | |
12640 | static void CheckImplicitConversion(Sema &S, Expr *E, QualType T, |
12641 | SourceLocation CC, |
12642 | bool *ICContext = nullptr, |
12643 | bool IsListInit = false) { |
12644 | if (E->isTypeDependent() || E->isValueDependent()) return; |
12645 | |
12646 | const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr(); |
12647 | const Type *Target = S.Context.getCanonicalType(T).getTypePtr(); |
12648 | if (Source == Target) return; |
12649 | if (Target->isDependentType()) return; |
12650 | |
12651 | |
12652 | |
12653 | |
12654 | |
12655 | |
12656 | if (CC.isInvalid()) |
12657 | return; |
12658 | |
12659 | if (Source->isAtomicType()) |
12660 | S.Diag(E->getExprLoc(), diag::warn_atomic_implicit_seq_cst); |
12661 | |
12662 | |
12663 | if (Target->isSpecificBuiltinType(BuiltinType::Bool)) { |
12664 | if (isa<StringLiteral>(E)) |
12665 | |
12666 | |
12667 | |
12668 | return DiagnoseImpCast(S, E, T, CC, |
12669 | diag::warn_impcast_string_literal_to_bool); |
12670 | if (isa<ObjCStringLiteral>(E) || isa<ObjCArrayLiteral>(E) || |
12671 | isa<ObjCDictionaryLiteral>(E) || isa<ObjCBoxedExpr>(E)) { |
12672 | |
12673 | |
12674 | return DiagnoseImpCast(S, E, T, CC, |
12675 | diag::warn_impcast_objective_c_literal_to_bool); |
12676 | } |
12677 | if (Source->isPointerType() || Source->canDecayToPointerType()) { |
12678 | |
12679 | S.DiagnoseAlwaysNonNullPointer(E, Expr::NPCK_NotNull, false, |
12680 | SourceRange(CC)); |
12681 | } |
12682 | } |
12683 | |
12684 | |
12685 | |
12686 | |
12687 | if (isObjCSignedCharBool(S, T) && Source->isIntegralType(S.Context)) { |
12688 | Expr::EvalResult Result; |
12689 | if (E->EvaluateAsInt(Result, S.getASTContext(), |
12690 | Expr::SE_AllowSideEffects)) { |
12691 | if (Result.Val.getInt() != 1 && Result.Val.getInt() != 0) { |
12692 | adornObjCBoolConversionDiagWithTernaryFixit( |
12693 | S, E, |
12694 | S.Diag(CC, diag::warn_impcast_constant_value_to_objc_bool) |
12695 | << toString(Result.Val.getInt(), 10)); |
12696 | } |
12697 | return; |
12698 | } |
12699 | } |
12700 | |
12701 | |
12702 | |
12703 | if (auto *ArrayLiteral = dyn_cast<ObjCArrayLiteral>(E)) |
12704 | checkObjCArrayLiteral(S, QualType(Target, 0), ArrayLiteral); |
12705 | else if (auto *DictionaryLiteral = dyn_cast<ObjCDictionaryLiteral>(E)) |
12706 | checkObjCDictionaryLiteral(S, QualType(Target, 0), DictionaryLiteral); |
12707 | |
12708 | |
12709 | if (isa<VectorType>(Source)) { |
12710 | if (Target->isVLSTBuiltinType() && |
12711 | (S.Context.areCompatibleSveTypes(QualType(Target, 0), |
12712 | QualType(Source, 0)) || |
12713 | S.Context.areLaxCompatibleSveTypes(QualType(Target, 0), |
12714 | QualType(Source, 0)))) |
12715 | return; |
12716 | |
12717 | if (!isa<VectorType>(Target)) { |
12718 | if (S.SourceMgr.isInSystemMacro(CC)) |
12719 | return; |
12720 | return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_vector_scalar); |
12721 | } |
12722 | |
12723 | |
12724 | |
12725 | if (S.Context.getTypeSize(Source) == S.Context.getTypeSize(Target)) |
12726 | return; |
12727 | |
12728 | Source = cast<VectorType>(Source)->getElementType().getTypePtr(); |
12729 | Target = cast<VectorType>(Target)->getElementType().getTypePtr(); |
12730 | } |
12731 | if (auto VecTy = dyn_cast<VectorType>(Target)) |
12732 | Target = VecTy->getElementType().getTypePtr(); |
12733 | |
12734 | |
12735 | if (isa<ComplexType>(Source)) { |
12736 | if (!isa<ComplexType>(Target)) { |
12737 | if (S.SourceMgr.isInSystemMacro(CC) || Target->isBooleanType()) |
12738 | return; |
12739 | |
12740 | return DiagnoseImpCast(S, E, T, CC, |
12741 | S.getLangOpts().CPlusPlus |
12742 | ? diag::err_impcast_complex_scalar |
12743 | : diag::warn_impcast_complex_scalar); |
12744 | } |
12745 | |
12746 | Source = cast<ComplexType>(Source)->getElementType().getTypePtr(); |
12747 | Target = cast<ComplexType>(Target)->getElementType().getTypePtr(); |
12748 | } |
12749 | |
12750 | const BuiltinType *SourceBT = dyn_cast<BuiltinType>(Source); |
12751 | const BuiltinType *TargetBT = dyn_cast<BuiltinType>(Target); |
12752 | |
12753 | |
12754 | if (SourceBT && SourceBT->isFloatingPoint()) { |
12755 | |
12756 | if (TargetBT && TargetBT->isFloatingPoint()) { |
12757 | |
12758 | |
12759 | int Order = S.getASTContext().getFloatingTypeSemanticOrder( |
12760 | QualType(SourceBT, 0), QualType(TargetBT, 0)); |
12761 | if (Order > 0) { |
12762 | |
12763 | |
12764 | Expr::EvalResult result; |
12765 | if (E->EvaluateAsRValue(result, S.Context)) { |
12766 | |
12767 | if (IsSameFloatAfterCast(result.Val, |
12768 | S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)), |
12769 | S.Context.getFloatTypeSemantics(QualType(SourceBT, 0)))) |
12770 | return; |
12771 | } |
12772 | |
12773 | if (S.SourceMgr.isInSystemMacro(CC)) |
12774 | return; |
12775 | |
12776 | DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_precision); |
12777 | } |
12778 | |
12779 | else if (Order < 0) { |
12780 | if (S.SourceMgr.isInSystemMacro(CC)) |
12781 | return; |
12782 | |
12783 | DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_double_promotion); |
12784 | } |
12785 | return; |
12786 | } |
12787 | |
12788 | |
12789 | if (TargetBT && TargetBT->isInteger()) { |
12790 | if (S.SourceMgr.isInSystemMacro(CC)) |
12791 | return; |
12792 | |
12793 | DiagnoseFloatingImpCast(S, E, T, CC); |
12794 | } |
12795 | |
12796 | |
12797 | |
12798 | |
12799 | |
12800 | |
12801 | |
12802 | |
12803 | |
12804 | if (Target->isBooleanType() && isa<CallExpr>(E)) { |
12805 | |
12806 | |
12807 | |
12808 | CallExpr *CEx = cast<CallExpr>(E); |
12809 | if (unsigned NumArgs = CEx->getNumArgs()) { |
12810 | Expr *LastA = CEx->getArg(NumArgs - 1); |
12811 | Expr *InnerE = LastA->IgnoreParenImpCasts(); |
12812 | if (isa<ImplicitCastExpr>(LastA) && |
12813 | InnerE->getType()->isBooleanType()) { |
12814 | |
12815 | DiagnoseImpCast(S, E, T, CC, |
12816 | diag::warn_impcast_floating_point_to_bool); |
12817 | } |
12818 | } |
12819 | } |
12820 | return; |
12821 | } |
12822 | |
12823 | |
12824 | if (Source->isFixedPointType()) { |
12825 | if (Target->isUnsaturatedFixedPointType()) { |
12826 | Expr::EvalResult Result; |
12827 | if (E->EvaluateAsFixedPoint(Result, S.Context, Expr::SE_AllowSideEffects, |
12828 | S.isConstantEvaluated())) { |
12829 | llvm::APFixedPoint Value = Result.Val.getFixedPoint(); |
12830 | llvm::APFixedPoint MaxVal = S.Context.getFixedPointMax(T); |
12831 | llvm::APFixedPoint MinVal = S.Context.getFixedPointMin(T); |
12832 | if (Value > MaxVal || Value < MinVal) { |
12833 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12834 | S.PDiag(diag::warn_impcast_fixed_point_range) |
12835 | << Value.toString() << T |
12836 | << E->getSourceRange() |
12837 | << clang::SourceRange(CC)); |
12838 | return; |
12839 | } |
12840 | } |
12841 | } else if (Target->isIntegerType()) { |
12842 | Expr::EvalResult Result; |
12843 | if (!S.isConstantEvaluated() && |
12844 | E->EvaluateAsFixedPoint(Result, S.Context, |
12845 | Expr::SE_AllowSideEffects)) { |
12846 | llvm::APFixedPoint FXResult = Result.Val.getFixedPoint(); |
12847 | |
12848 | bool Overflowed; |
12849 | llvm::APSInt IntResult = FXResult.convertToInt( |
12850 | S.Context.getIntWidth(T), |
12851 | Target->isSignedIntegerOrEnumerationType(), &Overflowed); |
12852 | |
12853 | if (Overflowed) { |
12854 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12855 | S.PDiag(diag::warn_impcast_fixed_point_range) |
12856 | << FXResult.toString() << T |
12857 | << E->getSourceRange() |
12858 | << clang::SourceRange(CC)); |
12859 | return; |
12860 | } |
12861 | } |
12862 | } |
12863 | } else if (Target->isUnsaturatedFixedPointType()) { |
12864 | if (Source->isIntegerType()) { |
12865 | Expr::EvalResult Result; |
12866 | if (!S.isConstantEvaluated() && |
12867 | E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) { |
12868 | llvm::APSInt Value = Result.Val.getInt(); |
12869 | |
12870 | bool Overflowed; |
12871 | llvm::APFixedPoint IntResult = llvm::APFixedPoint::getFromIntValue( |
12872 | Value, S.Context.getFixedPointSemantics(T), &Overflowed); |
12873 | |
12874 | if (Overflowed) { |
12875 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12876 | S.PDiag(diag::warn_impcast_fixed_point_range) |
12877 | << toString(Value, 10) << T |
12878 | << E->getSourceRange() |
12879 | << clang::SourceRange(CC)); |
12880 | return; |
12881 | } |
12882 | } |
12883 | } |
12884 | } |
12885 | |
12886 | |
12887 | |
12888 | |
12889 | if (SourceBT && TargetBT && SourceBT->isIntegerType() && |
12890 | TargetBT->isFloatingType() && !IsListInit) { |
12891 | |
12892 | IntRange SourceRange = GetExprRange(S.Context, E, S.isConstantEvaluated(), |
12893 | true); |
12894 | unsigned int SourcePrecision = SourceRange.Width; |
12895 | |
12896 | |
12897 | |
12898 | unsigned int TargetPrecision = llvm::APFloatBase::semanticsPrecision( |
12899 | S.Context.getFloatTypeSemantics(QualType(TargetBT, 0))); |
12900 | |
12901 | if (SourcePrecision > 0 && TargetPrecision > 0 && |
12902 | SourcePrecision > TargetPrecision) { |
12903 | |
12904 | if (Optional<llvm::APSInt> SourceInt = |
12905 | E->getIntegerConstantExpr(S.Context)) { |
12906 | |
12907 | |
12908 | |
12909 | llvm::APFloat TargetFloatValue( |
12910 | S.Context.getFloatTypeSemantics(QualType(TargetBT, 0))); |
12911 | llvm::APFloat::opStatus ConversionStatus = |
12912 | TargetFloatValue.convertFromAPInt( |
12913 | *SourceInt, SourceBT->isSignedInteger(), |
12914 | llvm::APFloat::rmNearestTiesToEven); |
12915 | |
12916 | if (ConversionStatus != llvm::APFloat::opOK) { |
12917 | SmallString<32> PrettySourceValue; |
12918 | SourceInt->toString(PrettySourceValue, 10); |
12919 | SmallString<32> PrettyTargetValue; |
12920 | TargetFloatValue.toString(PrettyTargetValue, TargetPrecision); |
12921 | |
12922 | S.DiagRuntimeBehavior( |
12923 | E->getExprLoc(), E, |
12924 | S.PDiag(diag::warn_impcast_integer_float_precision_constant) |
12925 | << PrettySourceValue << PrettyTargetValue << E->getType() << T |
12926 | << E->getSourceRange() << clang::SourceRange(CC)); |
12927 | } |
12928 | } else { |
12929 | |
12930 | DiagnoseImpCast(S, E, T, CC, |
12931 | diag::warn_impcast_integer_float_precision); |
12932 | } |
12933 | } |
12934 | } |
12935 | |
12936 | DiagnoseNullConversion(S, E, T, CC); |
12937 | |
12938 | S.DiscardMisalignedMemberAddress(Target, E); |
12939 | |
12940 | if (Target->isBooleanType()) |
12941 | DiagnoseIntInBoolContext(S, E); |
12942 | |
12943 | if (!Source->isIntegerType() || !Target->isIntegerType()) |
12944 | return; |
12945 | |
12946 | |
12947 | |
12948 | if (Target->isSpecificBuiltinType(BuiltinType::Bool)) |
12949 | return; |
12950 | |
12951 | if (isObjCSignedCharBool(S, T) && !Source->isCharType() && |
12952 | !E->isKnownToHaveBooleanValue(false)) { |
12953 | return adornObjCBoolConversionDiagWithTernaryFixit( |
12954 | S, E, |
12955 | S.Diag(CC, diag::warn_impcast_int_to_objc_signed_char_bool) |
12956 | << E->getType()); |
12957 | } |
12958 | |
12959 | IntRange SourceTypeRange = |
12960 | IntRange::forTargetOfCanonicalType(S.Context, Source); |
12961 | IntRange LikelySourceRange = |
12962 | GetExprRange(S.Context, E, S.isConstantEvaluated(), true); |
12963 | IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target); |
12964 | |
12965 | if (LikelySourceRange.Width > TargetRange.Width) { |
12966 | |
12967 | |
12968 | Expr::EvalResult Result; |
12969 | if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects, |
12970 | S.isConstantEvaluated())) { |
12971 | llvm::APSInt Value(32); |
12972 | Value = Result.Val.getInt(); |
12973 | |
12974 | if (S.SourceMgr.isInSystemMacro(CC)) |
12975 | return; |
12976 | |
12977 | std::string PrettySourceValue = toString(Value, 10); |
12978 | std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); |
12979 | |
12980 | S.DiagRuntimeBehavior( |
12981 | E->getExprLoc(), E, |
12982 | S.PDiag(diag::warn_impcast_integer_precision_constant) |
12983 | << PrettySourceValue << PrettyTargetValue << E->getType() << T |
12984 | << E->getSourceRange() << SourceRange(CC)); |
12985 | return; |
12986 | } |
12987 | |
12988 | |
12989 | if (S.SourceMgr.isInSystemMacro(CC)) |
12990 | return; |
12991 | |
12992 | if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64) |
12993 | return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32, |
12994 | true); |
12995 | return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_precision); |
12996 | } |
12997 | |
12998 | if (TargetRange.Width > SourceTypeRange.Width) { |
12999 | if (auto *UO = dyn_cast<UnaryOperator>(E)) |
13000 | if (UO->getOpcode() == UO_Minus) |
13001 | if (Source->isUnsignedIntegerType()) { |
13002 | if (Target->isUnsignedIntegerType()) |
13003 | return DiagnoseImpCast(S, E, T, CC, |
13004 | diag::warn_impcast_high_order_zero_bits); |
13005 | if (Target->isSignedIntegerType()) |
13006 | return DiagnoseImpCast(S, E, T, CC, |
13007 | diag::warn_impcast_nonnegative_result); |
13008 | } |
13009 | } |
13010 | |
13011 | if (TargetRange.Width == LikelySourceRange.Width && |
13012 | !TargetRange.NonNegative && LikelySourceRange.NonNegative && |
13013 | Source->isSignedIntegerType()) { |
13014 | |
13015 | |
13016 | |
13017 | |
13018 | Expr::EvalResult Result; |
13019 | if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects) && |
13020 | !S.SourceMgr.isInSystemMacro(CC)) { |
13021 | llvm::APSInt Value = Result.Val.getInt(); |
13022 | if (isSameWidthConstantConversion(S, E, T, CC)) { |
13023 | std::string PrettySourceValue = toString(Value, 10); |
13024 | std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); |
13025 | |
13026 | S.DiagRuntimeBehavior( |
13027 | E->getExprLoc(), E, |
13028 | S.PDiag(diag::warn_impcast_integer_precision_constant) |
13029 | << PrettySourceValue << PrettyTargetValue << E->getType() << T |
13030 | << E->getSourceRange() << SourceRange(CC)); |
13031 | return; |
13032 | } |
13033 | } |
13034 | |
13035 | |
13036 | } |
13037 | |
13038 | if ((TargetRange.NonNegative && !LikelySourceRange.NonNegative) || |
13039 | (!TargetRange.NonNegative && LikelySourceRange.NonNegative && |
13040 | LikelySourceRange.Width == TargetRange.Width)) { |
13041 | if (S.SourceMgr.isInSystemMacro(CC)) |
13042 | return; |
13043 | |
13044 | unsigned DiagID = diag::warn_impcast_integer_sign; |
13045 | |
13046 | |
13047 | |
13048 | |
13049 | |
13050 | |
13051 | if (ICContext) { |
13052 | DiagID = diag::warn_impcast_integer_sign_conditional; |
13053 | *ICContext = true; |
13054 | } |
13055 | |
13056 | return DiagnoseImpCast(S, E, T, CC, DiagID); |
13057 | } |
13058 | |
13059 | |
13060 | |
13061 | |
13062 | QualType SourceType = E->getType(); |
13063 | if (!S.getLangOpts().CPlusPlus) { |
13064 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) |
13065 | if (EnumConstantDecl *ECD = dyn_cast<EnumConstantDecl>(DRE->getDecl())) { |
13066 | EnumDecl *Enum = cast<EnumDecl>(ECD->getDeclContext()); |
13067 | SourceType = S.Context.getTypeDeclType(Enum); |
13068 | Source = S.Context.getCanonicalType(SourceType).getTypePtr(); |
13069 | } |
13070 | } |
13071 | |
13072 | if (const EnumType *SourceEnum = Source->getAs<EnumType>()) |
13073 | if (const EnumType *TargetEnum = Target->getAs<EnumType>()) |
13074 | if (SourceEnum->getDecl()->hasNameForLinkage() && |
13075 | TargetEnum->getDecl()->hasNameForLinkage() && |
13076 | SourceEnum != TargetEnum) { |
13077 | if (S.SourceMgr.isInSystemMacro(CC)) |
13078 | return; |
13079 | |
13080 | return DiagnoseImpCast(S, E, SourceType, T, CC, |
13081 | diag::warn_impcast_different_enum_types); |
13082 | } |
13083 | } |
13084 | |
13085 | static void CheckConditionalOperator(Sema &S, AbstractConditionalOperator *E, |
13086 | SourceLocation CC, QualType T); |
13087 | |
13088 | static void CheckConditionalOperand(Sema &S, Expr *E, QualType T, |
13089 | SourceLocation CC, bool &ICContext) { |
13090 | E = E->IgnoreParenImpCasts(); |
13091 | |
13092 | if (auto *CO = dyn_cast<AbstractConditionalOperator>(E)) |
13093 | return CheckConditionalOperator(S, CO, CC, T); |
13094 | |
13095 | AnalyzeImplicitConversions(S, E, CC); |
13096 | if (E->getType() != T) |
13097 | return CheckImplicitConversion(S, E, T, CC, &ICContext); |
13098 | } |
13099 | |
13100 | static void CheckConditionalOperator(Sema &S, AbstractConditionalOperator *E, |
13101 | SourceLocation CC, QualType T) { |
13102 | AnalyzeImplicitConversions(S, E->getCond(), E->getQuestionLoc()); |
13103 | |
13104 | Expr *TrueExpr = E->getTrueExpr(); |
13105 | if (auto *BCO = dyn_cast<BinaryConditionalOperator>(E)) |
13106 | TrueExpr = BCO->getCommon(); |
13107 | |
13108 | bool Suspicious = false; |
13109 | CheckConditionalOperand(S, TrueExpr, T, CC, Suspicious); |
13110 | CheckConditionalOperand(S, E->getFalseExpr(), T, CC, Suspicious); |
13111 | |
13112 | if (T->isBooleanType()) |
13113 | DiagnoseIntInBoolContext(S, E); |
13114 | |
13115 | |
13116 | |
13117 | if (!Suspicious) return; |
13118 | |
13119 | |
13120 | if (!S.Diags.isIgnored(diag::warn_impcast_integer_sign_conditional, CC)) |
13121 | return; |
13122 | |
13123 | |
13124 | |
13125 | if (E->getType() == T) return; |
13126 | |
13127 | Suspicious = false; |
13128 | CheckImplicitConversion(S, TrueExpr->IgnoreParenImpCasts(), |
13129 | E->getType(), CC, &Suspicious); |
13130 | if (!Suspicious) |
13131 | CheckImplicitConversion(S, E->getFalseExpr()->IgnoreParenImpCasts(), |
13132 | E->getType(), CC, &Suspicious); |
13133 | } |
13134 | |
13135 | |
13136 | |
13137 | static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { |
13138 | if (S.getLangOpts().Bool) |
13139 | return; |
13140 | if (E->IgnoreParenImpCasts()->getType()->isAtomicType()) |
13141 | return; |
13142 | CheckImplicitConversion(S, E->IgnoreParenImpCasts(), S.Context.BoolTy, CC); |
13143 | } |
13144 | |
13145 | namespace { |
13146 | struct AnalyzeImplicitConversionsWorkItem { |
13147 | Expr *E; |
13148 | SourceLocation CC; |
13149 | bool IsListInit; |
13150 | }; |
13151 | } |
13152 | |
13153 | |
13154 | |
13155 | static void AnalyzeImplicitConversions( |
13156 | Sema &S, AnalyzeImplicitConversionsWorkItem Item, |
13157 | llvm::SmallVectorImpl<AnalyzeImplicitConversionsWorkItem> &WorkList) { |
13158 | Expr *OrigE = Item.E; |
13159 | SourceLocation CC = Item.CC; |
13160 | |
13161 | QualType T = OrigE->getType(); |
13162 | Expr *E = OrigE->IgnoreParenImpCasts(); |
13163 | |
13164 | |
13165 | |
13166 | |
13167 | bool IsListInit = Item.IsListInit || |
13168 | (isa<InitListExpr>(OrigE) && S.getLangOpts().CPlusPlus); |
13169 | |
13170 | if (E->isTypeDependent() || E->isValueDependent()) |
13171 | return; |
13172 | |
13173 | Expr *SourceExpr = E; |
13174 | |
13175 | |
13176 | |
13177 | |
13178 | if (auto *OVE = dyn_cast<OpaqueValueExpr>(E)) |
13179 | if (auto *Src = OVE->getSourceExpr()) |
13180 | SourceExpr = Src; |
13181 | |
13182 | if (const auto *UO = dyn_cast<UnaryOperator>(SourceExpr)) |
13183 | if (UO->getOpcode() == UO_Not && |
13184 | UO->getSubExpr()->isKnownToHaveBooleanValue()) |
13185 | S.Diag(UO->getBeginLoc(), diag::warn_bitwise_negation_bool) |
13186 | << OrigE->getSourceRange() << T->isBooleanType() |
13187 | << FixItHint::CreateReplacement(UO->getBeginLoc(), "!"); |
13188 | |
13189 | |
13190 | |
13191 | if (auto *CO = dyn_cast<AbstractConditionalOperator>(SourceExpr)) { |
13192 | CheckConditionalOperator(S, CO, CC, T); |
13193 | return; |
13194 | } |
13195 | |
13196 | |
13197 | if (CallExpr *Call = dyn_cast<CallExpr>(SourceExpr)) |
13198 | CheckImplicitArgumentConversions(S, Call, CC); |
13199 | |
13200 | |
13201 | |
13202 | |
13203 | if (SourceExpr->getType() != T) |
13204 | CheckImplicitConversion(S, SourceExpr, T, CC, nullptr, IsListInit); |
13205 | |
13206 | |
13207 | |
13208 | if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(E)) { |
13209 | |
13210 | |
13211 | |
13212 | for (auto *SE : POE->semantics()) |
13213 | if (auto *OVE = dyn_cast<OpaqueValueExpr>(SE)) |
13214 | WorkList.push_back({OVE->getSourceExpr(), CC, IsListInit}); |
13215 | } |
13216 | |
13217 | |
13218 | if (auto *CE = dyn_cast<ExplicitCastExpr>(E)) { |
13219 | E = CE->getSubExpr()->IgnoreParenImpCasts(); |
13220 | if (!CE->getType()->isVoidType() && E->getType()->isAtomicType()) |
13221 | S.Diag(E->getBeginLoc(), diag::warn_atomic_implicit_seq_cst); |
13222 | WorkList.push_back({E, CC, IsListInit}); |
13223 | return; |
13224 | } |
13225 | |
13226 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { |
13227 | |
13228 | if (BO->isComparisonOp()) |
13229 | return AnalyzeComparison(S, BO); |
13230 | |
13231 | |
13232 | if (BO->getOpcode() == BO_Assign) |
13233 | return AnalyzeAssignment(S, BO); |
13234 | |
13235 | if (BO->isAssignmentOp()) |
13236 | return AnalyzeCompoundAssignment(S, BO); |
13237 | } |
13238 | |
13239 | |
13240 | |
13241 | |
13242 | |
13243 | if (isa<StmtExpr>(E)) return; |
13244 | |
13245 | |
13246 | if (isa<UnaryExprOrTypeTraitExpr>(E)) return; |
13247 | |
13248 | |
13249 | CC = E->getExprLoc(); |
13250 | BinaryOperator *BO = dyn_cast<BinaryOperator>(E); |
13251 | bool IsLogicalAndOperator = BO && BO->getOpcode() == BO_LAnd; |
13252 | for (Stmt *SubStmt : E->children()) { |
13253 | Expr *ChildExpr = dyn_cast_or_null<Expr>(SubStmt); |
13254 | if (!ChildExpr) |
13255 | continue; |
13256 | |
13257 | if (IsLogicalAndOperator && |
13258 | isa<StringLiteral>(ChildExpr->IgnoreParenImpCasts())) |
13259 | |
13260 | |
13261 | continue; |
13262 | WorkList.push_back({ChildExpr, CC, IsListInit}); |
13263 | } |
13264 | |
13265 | if (BO && BO->isLogicalOp()) { |
13266 | Expr *SubExpr = BO->getLHS()->IgnoreParenImpCasts(); |
13267 | if (!IsLogicalAndOperator || !isa<StringLiteral>(SubExpr)) |
13268 | ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); |
13269 | |
13270 | SubExpr = BO->getRHS()->IgnoreParenImpCasts(); |
13271 | if (!IsLogicalAndOperator || !isa<StringLiteral>(SubExpr)) |
13272 | ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); |
13273 | } |
13274 | |
13275 | if (const UnaryOperator *U = dyn_cast<UnaryOperator>(E)) { |
13276 | if (U->getOpcode() == UO_LNot) { |
13277 | ::CheckBoolLikeConversion(S, U->getSubExpr(), CC); |
13278 | } else if (U->getOpcode() != UO_AddrOf) { |
13279 | if (U->getSubExpr()->getType()->isAtomicType()) |
13280 | S.Diag(U->getSubExpr()->getBeginLoc(), |
13281 | diag::warn_atomic_implicit_seq_cst); |
13282 | } |
13283 | } |
13284 | } |
13285 | |
13286 | |
13287 | |
13288 | |
13289 | static void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC, |
13290 | bool IsListInit) { |
13291 | llvm::SmallVector<AnalyzeImplicitConversionsWorkItem, 16> WorkList; |
13292 | WorkList.push_back({OrigE, CC, IsListInit}); |
13293 | while (!WorkList.empty()) |
13294 | AnalyzeImplicitConversions(S, WorkList.pop_back_val(), WorkList); |
13295 | } |
13296 | |
13297 | |
13298 | static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntT) { |
13299 | |
13300 | |
13301 | if (!E->getType()->isIntegerType()) { |
13302 | S.Diag(E->getBeginLoc(), |
13303 | diag::err_opencl_enqueue_kernel_invalid_local_size_type); |
13304 | return true; |
13305 | } |
13306 | |
13307 | |
13308 | CheckImplicitConversion(S, E, IntT, E->getBeginLoc()); |
13309 | return false; |
13310 | } |
13311 | |
13312 | |
13313 | |
13314 | static bool CheckForReference(Sema &SemaRef, const Expr *E, |
13315 | const PartialDiagnostic &PD) { |
13316 | E = E->IgnoreParenImpCasts(); |
13317 | |
13318 | const FunctionDecl *FD = nullptr; |
13319 | |
13320 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { |
13321 | if (!DRE->getDecl()->getType()->isReferenceType()) |
13322 | return false; |
13323 | } else if (const MemberExpr *M = dyn_cast<MemberExpr>(E)) { |
13324 | if (!M->getMemberDecl()->getType()->isReferenceType()) |
13325 | return false; |
13326 | } else if (const CallExpr *Call = dyn_cast<CallExpr>(E)) { |
13327 | if (!Call->getCallReturnType(SemaRef.Context)->isReferenceType()) |
13328 | return false; |
13329 | FD = Call->getDirectCallee(); |
13330 | } else { |
13331 | return false; |
13332 | } |
13333 | |
13334 | SemaRef.Diag(E->getExprLoc(), PD); |
13335 | |
13336 | |
13337 | if (FD) { |
13338 | SemaRef.Diag(FD->getLocation(), diag::note_reference_is_return_value) << FD; |
13339 | } |
13340 | |
13341 | return true; |
13342 | } |
13343 | |
13344 | |
13345 | |
13346 | |
13347 | static bool IsInAnyMacroBody(const SourceManager &SM, SourceLocation Loc) { |
13348 | if (Loc.isInvalid()) |
13349 | return false; |
13350 | |
13351 | while (Loc.isMacroID()) { |
13352 | if (SM.isMacroBodyExpansion(Loc)) |
13353 | return true; |
13354 | Loc = SM.getImmediateMacroCallerLoc(Loc); |
13355 | } |
13356 | |
13357 | return false; |
13358 | } |
13359 | |
13360 | |
13361 | |
13362 | |
13363 | |
13364 | |
13365 | |
13366 | void Sema::DiagnoseAlwaysNonNullPointer(Expr *E, |
13367 | Expr::NullPointerConstantKind NullKind, |
13368 | bool IsEqual, SourceRange Range) { |
13369 | if (!E) |
13370 | return; |
13371 | |
13372 | |
13373 | if (E->getExprLoc().isMacroID()) { |
13374 | const SourceManager &SM = getSourceManager(); |
13375 | if (IsInAnyMacroBody(SM, E->getExprLoc()) || |
13376 | IsInAnyMacroBody(SM, Range.getBegin())) |
13377 | return; |
13378 | } |
13379 | E = E->IgnoreImpCasts(); |
13380 | |
13381 | const bool IsCompare = NullKind != Expr::NPCK_NotNull; |
13382 | |
13383 | if (isa<CXXThisExpr>(E)) { |
13384 | unsigned DiagID = IsCompare ? diag::warn_this_null_compare |
13385 | : diag::warn_this_bool_conversion; |
13386 | Diag(E->getExprLoc(), DiagID) << E->getSourceRange() << Range << IsEqual; |
13387 | return; |
13388 | } |
13389 | |
13390 | bool IsAddressOf = false; |
13391 | |
13392 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { |
13393 | if (UO->getOpcode() != UO_AddrOf) |
13394 | return; |
13395 | IsAddressOf = true; |
13396 | E = UO->getSubExpr(); |
13397 | } |
13398 | |
13399 | if (IsAddressOf) { |
13400 | unsigned DiagID = IsCompare |
13401 | ? diag::warn_address_of_reference_null_compare |
13402 | : diag::warn_address_of_reference_bool_conversion; |
13403 | PartialDiagnostic PD = PDiag(DiagID) << E->getSourceRange() << Range |
13404 | << IsEqual; |
13405 | if (CheckForReference(*this, E, PD)) { |
13406 | return; |
13407 | } |
13408 | } |
13409 | |
13410 | auto ComplainAboutNonnullParamOrCall = [&](const Attr *NonnullAttr) { |
13411 | bool IsParam = isa<NonNullAttr>(NonnullAttr); |
13412 | std::string Str; |
13413 | llvm::raw_string_ostream S(Str); |
13414 | E->printPretty(S, nullptr, getPrintingPolicy()); |
13415 | unsigned DiagID = IsCompare ? diag::warn_nonnull_expr_compare |
13416 | : diag::warn_cast_nonnull_to_bool; |
13417 | Diag(E->getExprLoc(), DiagID) << IsParam << S.str() |
13418 | << E->getSourceRange() << Range << IsEqual; |
13419 | Diag(NonnullAttr->getLocation(), diag::note_declared_nonnull) << IsParam; |
13420 | }; |
13421 | |
13422 | |
13423 | if (auto *Call = dyn_cast<CallExpr>(E->IgnoreParenImpCasts())) { |
13424 | if (auto *Callee = Call->getDirectCallee()) { |
13425 | if (const Attr *A = Callee->getAttr<ReturnsNonNullAttr>()) { |
13426 | ComplainAboutNonnullParamOrCall(A); |
13427 | return; |
13428 | } |
13429 | } |
13430 | } |
13431 | |
13432 | |
13433 | ValueDecl *D = nullptr; |
13434 | if (DeclRefExpr *R = dyn_cast<DeclRefExpr>(E)) { |
13435 | D = R->getDecl(); |
13436 | } else if (MemberExpr *M = dyn_cast<MemberExpr>(E)) { |
13437 | D = M->getMemberDecl(); |
13438 | } |
13439 | |
13440 | |
13441 | if (!D || D->isWeak()) |
13442 | return; |
13443 | |
13444 | |
13445 | if (const auto* PV = dyn_cast<ParmVarDecl>(D)) { |
13446 | if (getCurFunction() && |
13447 | !getCurFunction()->ModifiedNonNullParams.count(PV)) { |
13448 | if (const Attr *A = PV->getAttr<NonNullAttr>()) { |
13449 | ComplainAboutNonnullParamOrCall(A); |
13450 | return; |
13451 | } |
13452 | |
13453 | if (const auto *FD = dyn_cast<FunctionDecl>(PV->getDeclContext())) { |
13454 | |
13455 | if (FD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate) |
13456 | return; |
13457 | auto ParamIter = llvm::find(FD->parameters(), PV); |
13458 | assert(ParamIter != FD->param_end()); |
13459 | unsigned ParamNo = std::distance(FD->param_begin(), ParamIter); |
13460 | |
13461 | for (const auto *NonNull : FD->specific_attrs<NonNullAttr>()) { |
13462 | if (!NonNull->args_size()) { |
13463 | ComplainAboutNonnullParamOrCall(NonNull); |
13464 | return; |
13465 | } |
13466 | |
13467 | for (const ParamIdx &ArgNo : NonNull->args()) { |
13468 | if (ArgNo.getASTIndex() == ParamNo) { |
13469 | ComplainAboutNonnullParamOrCall(NonNull); |
13470 | return; |
13471 | } |
13472 | } |
13473 | } |
13474 | } |
13475 | } |
13476 | } |
13477 | |
13478 | QualType T = D->getType(); |
13479 | const bool IsArray = T->isArrayType(); |
13480 | const bool IsFunction = T->isFunctionType(); |
13481 | |
13482 | |
13483 | if (IsAddressOf && IsFunction) { |
13484 | return; |
13485 | } |
13486 | |
13487 | |
13488 | if (!IsAddressOf && !IsFunction && !IsArray) |
13489 | return; |
13490 | |
13491 | |
13492 | std::string Str; |
13493 | llvm::raw_string_ostream S(Str); |
13494 | E->printPretty(S, nullptr, getPrintingPolicy()); |
13495 | |
13496 | unsigned DiagID = IsCompare ? diag::warn_null_pointer_compare |
13497 | : diag::warn_impcast_pointer_to_bool; |
13498 | enum { |
13499 | AddressOf, |
13500 | FunctionPointer, |
13501 | ArrayPointer |
13502 | } DiagType; |
13503 | if (IsAddressOf) |
13504 | DiagType = AddressOf; |
13505 | else if (IsFunction) |
13506 | DiagType = FunctionPointer; |
13507 | else if (IsArray) |
13508 | DiagType = ArrayPointer; |
13509 | else |
13510 | llvm_unreachable("Could not determine diagnostic."); |
13511 | Diag(E->getExprLoc(), DiagID) << DiagType << S.str() << E->getSourceRange() |
13512 | << Range << IsEqual; |
13513 | |
13514 | if (!IsFunction) |
13515 | return; |
13516 | |
13517 | |
13518 | Diag(E->getExprLoc(), diag::note_function_warning_silence) |
13519 | << FixItHint::CreateInsertion(E->getBeginLoc(), "&"); |
13520 | |
13521 | |
13522 | QualType ReturnType; |
13523 | UnresolvedSet<4> NonTemplateOverloads; |
13524 | tryExprAsCall(*E, ReturnType, NonTemplateOverloads); |
13525 | if (ReturnType.isNull()) |
13526 | return; |
13527 | |
13528 | if (IsCompare) { |
13529 | |
13530 | |
13531 | |
13532 | if (!ReturnType->isPointerType()) { |
13533 | if (NullKind == Expr::NPCK_ZeroExpression || |
13534 | NullKind == Expr::NPCK_ZeroLiteral) { |
13535 | if (!ReturnType->isIntegerType()) |
13536 | return; |
13537 | } else { |
13538 | return; |
13539 | } |
13540 | } |
13541 | } else { |
13542 | |
13543 | |
13544 | if (!ReturnType->isSpecificBuiltinType(BuiltinType::Bool)) |
13545 | return; |
13546 | } |
13547 | Diag(E->getExprLoc(), diag::note_function_to_function_call) |
13548 | << FixItHint::CreateInsertion(getLocForEndOfToken(E->getEndLoc()), "()"); |
13549 | } |
13550 | |
13551 | |
13552 | |
13553 | |
13554 | |
13555 | |
13556 | |
13557 | |
13558 | void Sema::CheckImplicitConversions(Expr *E, SourceLocation CC) { |
13559 | |
13560 | if (isUnevaluatedContext()) |
13561 | return; |
13562 | |
13563 | |
13564 | if (E->isTypeDependent() || E->isValueDependent()) |
13565 | return; |
13566 | |
13567 | |
13568 | |
13569 | |
13570 | CheckArrayAccess(E); |
13571 | |
13572 | |
13573 | AnalyzeImplicitConversions(*this, E, CC); |
13574 | } |
13575 | |
13576 | |
13577 | |
13578 | void Sema::CheckBoolLikeConversion(Expr *E, SourceLocation CC) { |
13579 | ::CheckBoolLikeConversion(*this, E, CC); |
13580 | } |
13581 | |
13582 | |
13583 | |
13584 | void Sema::CheckForIntOverflow (Expr *E) { |
13585 | |
13586 | SmallVector<Expr *, 2> Exprs(1, E); |
13587 | |
13588 | do { |
13589 | Expr *OriginalE = Exprs.pop_back_val(); |
13590 | Expr *E = OriginalE->IgnoreParenCasts(); |
13591 | |
13592 | if (isa<BinaryOperator>(E)) { |
13593 | E->EvaluateForOverflow(Context); |
13594 | continue; |
13595 | } |
13596 | |
13597 | if (auto InitList = dyn_cast<InitListExpr>(OriginalE)) |
13598 | Exprs.append(InitList->inits().begin(), InitList->inits().end()); |
13599 | else if (isa<ObjCBoxedExpr>(OriginalE)) |
13600 | E->EvaluateForOverflow(Context); |
13601 | else if (auto Call = dyn_cast<CallExpr>(E)) |
13602 | Exprs.append(Call->arg_begin(), Call->arg_end()); |
13603 | else if (auto Message = dyn_cast<ObjCMessageExpr>(E)) |
13604 | Exprs.append(Message->arg_begin(), Message->arg_end()); |
13605 | } while (!Exprs.empty()); |
13606 | } |
13607 | |
13608 | namespace { |
13609 | |
13610 | |
13611 | |
13612 | class SequenceChecker : public ConstEvaluatedExprVisitor<SequenceChecker> { |
13613 | using Base = ConstEvaluatedExprVisitor<SequenceChecker>; |
13614 | |
13615 | |
13616 | |
13617 | |
13618 | |
13619 | |
13620 | class SequenceTree { |
13621 | struct Value { |
13622 | explicit Value(unsigned Parent) : Parent(Parent), Merged(false) {} |
13623 | unsigned Parent : 31; |
13624 | unsigned Merged : 1; |
13625 | }; |
13626 | SmallVector<Value, 8> Values; |
13627 | |
13628 | public: |
13629 | |
13630 | |
13631 | class Seq { |
13632 | friend class SequenceTree; |
13633 | |
13634 | unsigned Index; |
13635 | |
13636 | explicit Seq(unsigned N) : Index(N) {} |
13637 | |
13638 | public: |
13639 | Seq() : Index(0) {} |
13640 | }; |
13641 | |
13642 | SequenceTree() { Values.push_back(Value(0)); } |
13643 | Seq root() const { return Seq(0); } |
13644 | |
13645 | |
13646 | |
13647 | |
13648 | Seq allocate(Seq Parent) { |
13649 | Values.push_back(Value(Parent.Index)); |
13650 | return Seq(Values.size() - 1); |
13651 | } |
13652 | |
13653 | |
13654 | void merge(Seq S) { |
13655 | Values[S.Index].Merged = true; |
13656 | } |
13657 | |
13658 | |
13659 | |
13660 | |
13661 | bool isUnsequenced(Seq Cur, Seq Old) { |
13662 | unsigned C = representative(Cur.Index); |
13663 | unsigned Target = representative(Old.Index); |
13664 | while (C >= Target) { |
13665 | if (C == Target) |
13666 | return true; |
13667 | C = Values[C].Parent; |
13668 | } |
13669 | return false; |
13670 | } |
13671 | |
13672 | private: |
13673 | |
13674 | unsigned representative(unsigned K) { |
13675 | if (Values[K].Merged) |
13676 | |
13677 | return Values[K].Parent = representative(Values[K].Parent); |
13678 | return K; |
13679 | } |
13680 | }; |
13681 | |
13682 | |
13683 | using Object = const NamedDecl *; |
13684 | |
13685 | |
13686 | |
13687 | enum UsageKind { |
13688 | |
13689 | UK_Use, |
13690 | |
13691 | |
13692 | |
13693 | UK_ModAsValue, |
13694 | |
13695 | |
13696 | |
13697 | UK_ModAsSideEffect, |
13698 | |
13699 | UK_Count = UK_ModAsSideEffect + 1 |
13700 | }; |
13701 | |
13702 | |
13703 | |
13704 | struct Usage { |
13705 | const Expr *UsageExpr; |
13706 | SequenceTree::Seq Seq; |
13707 | |
13708 | Usage() : UsageExpr(nullptr), Seq() {} |
13709 | }; |
13710 | |
13711 | struct UsageInfo { |
13712 | Usage Uses[UK_Count]; |
13713 | |
13714 | |
13715 | bool Diagnosed; |
13716 | |
13717 | UsageInfo() : Uses(), Diagnosed(false) {} |
13718 | }; |
13719 | using UsageInfoMap = llvm::SmallDenseMap<Object, UsageInfo, 16>; |
13720 | |
13721 | Sema &SemaRef; |
13722 | |
13723 | |
13724 | SequenceTree Tree; |
13725 | |
13726 | |
13727 | UsageInfoMap UsageMap; |
13728 | |
13729 | |
13730 | SequenceTree::Seq Region; |
13731 | |
13732 | |
13733 | |
13734 | SmallVectorImpl<std::pair<Object, Usage>> *ModAsSideEffect = nullptr; |
13735 | |
13736 | |
13737 | |
13738 | SmallVectorImpl<const Expr *> &WorkList; |
13739 | |
13740 | |
13741 | |
13742 | |
13743 | |
13744 | |
13745 | struct SequencedSubexpression { |
13746 | SequencedSubexpression(SequenceChecker &Self) |
13747 | : Self(Self), OldModAsSideEffect(Self.ModAsSideEffect) { |
13748 | Self.ModAsSideEffect = &ModAsSideEffect; |
13749 | } |
13750 | |
13751 | ~SequencedSubexpression() { |
13752 | for (const std::pair<Object, Usage> &M : llvm::reverse(ModAsSideEffect)) { |
13753 | |
13754 | |
13755 | |
13756 | UsageInfo &UI = Self.UsageMap[M.first]; |
13757 | auto &SideEffectUsage = UI.Uses[UK_ModAsSideEffect]; |
13758 | Self.addUsage(M.first, UI, SideEffectUsage.UsageExpr, UK_ModAsValue); |
13759 | SideEffectUsage = M.second; |
13760 | } |
13761 | Self.ModAsSideEffect = OldModAsSideEffect; |
13762 | } |
13763 | |
13764 | SequenceChecker &Self; |
13765 | SmallVector<std::pair<Object, Usage>, 4> ModAsSideEffect; |
13766 | SmallVectorImpl<std::pair<Object, Usage>> *OldModAsSideEffect; |
13767 | }; |
13768 | |
13769 | |
13770 | |
13771 | |
13772 | |
13773 | class EvaluationTracker { |
13774 | public: |
13775 | EvaluationTracker(SequenceChecker &Self) |
13776 | : Self(Self), Prev(Self.EvalTracker) { |
13777 | Self.EvalTracker = this; |
13778 | } |
13779 | |
13780 | ~EvaluationTracker() { |
13781 | Self.EvalTracker = Prev; |
13782 | if (Prev) |
13783 | Prev->EvalOK &= EvalOK; |
13784 | } |
13785 | |
13786 | bool evaluate(const Expr *E, bool &Result) { |
13787 | if (!EvalOK || E->isValueDependent()) |
13788 | return false; |
13789 | EvalOK = E->EvaluateAsBooleanCondition( |
13790 | Result, Self.SemaRef.Context, Self.SemaRef.isConstantEvaluated()); |
13791 | return EvalOK; |
13792 | } |
13793 | |
13794 | private: |
13795 | SequenceChecker &Self; |
13796 | EvaluationTracker *Prev; |
13797 | bool EvalOK = true; |
13798 | } *EvalTracker = nullptr; |
13799 | |
13800 | |
13801 | |
13802 | Object getObject(const Expr *E, bool Mod) const { |
13803 | E = E->IgnoreParenCasts(); |
13804 | if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { |
13805 | if (Mod && (UO->getOpcode() == UO_PreInc || UO->getOpcode() == UO_PreDec)) |
13806 | return getObject(UO->getSubExpr(), Mod); |
13807 | } else if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { |
13808 | if (BO->getOpcode() == BO_Comma) |
13809 | return getObject(BO->getRHS(), Mod); |
13810 | if (Mod && BO->isAssignmentOp()) |
13811 | return getObject(BO->getLHS(), Mod); |
13812 | } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { |
13813 | |
13814 | if (isa<CXXThisExpr>(ME->getBase()->IgnoreParenCasts())) |
13815 | return ME->getMemberDecl(); |
13816 | } else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) |
13817 | |
13818 | return DRE->getDecl(); |
13819 | return nullptr; |
13820 | } |
13821 | |
13822 | |
13823 | |
13824 | |
13825 | void addUsage(Object O, UsageInfo &UI, const Expr *UsageExpr, UsageKind UK) { |
13826 | |
13827 | Usage &U = UI.Uses[UK]; |
13828 | if (!U.UsageExpr || !Tree.isUnsequenced(Region, U.Seq)) { |
13829 | |
13830 | |
13831 | |
13832 | if (UK == UK_ModAsSideEffect && ModAsSideEffect) |
13833 | ModAsSideEffect->push_back(std::make_pair(O, U)); |
13834 | |
13835 | U.UsageExpr = UsageExpr; |
13836 | U.Seq = Region; |
13837 | } |
13838 | } |
13839 | |
13840 | |
13841 | |
13842 | |
13843 | |
13844 | |
13845 | void checkUsage(Object O, UsageInfo &UI, const Expr *UsageExpr, |
13846 | UsageKind OtherKind, bool IsModMod) { |
13847 | if (UI.Diagnosed) |
13848 | return; |
13849 | |
13850 | const Usage &U = UI.Uses[OtherKind]; |
13851 | if (!U.UsageExpr || !Tree.isUnsequenced(Region, U.Seq)) |
13852 | return; |
13853 | |
13854 | const Expr *Mod = U.UsageExpr; |
13855 | const Expr *ModOrUse = UsageExpr; |
13856 | if (OtherKind == UK_Use) |
13857 | std::swap(Mod, ModOrUse); |
13858 | |
13859 | SemaRef.DiagRuntimeBehavior( |
13860 | Mod->getExprLoc(), {Mod, ModOrUse}, |
13861 | SemaRef.PDiag(IsModMod ? diag::warn_unsequenced_mod_mod |
13862 | : diag::warn_unsequenced_mod_use) |
13863 | << O << SourceRange(ModOrUse->getExprLoc())); |
13864 | UI.Diagnosed = true; |
13865 | } |
13866 | |
13867 | |
13868 | |
13869 | |
13870 | |
13871 | |
13872 | |
13873 | |
13874 | |
13875 | |
13876 | |
13877 | |
13878 | |
13879 | |
13880 | |
13881 | |
13882 | |
13883 | |
13884 | |
13885 | |
13886 | |
13887 | |
13888 | |
13889 | |
13890 | |
13891 | |
13892 | |
13893 | void notePreUse(Object O, const Expr *UseExpr) { |
13894 | UsageInfo &UI = UsageMap[O]; |
13895 | |
13896 | checkUsage(O, UI, UseExpr, UK_ModAsValue, false); |
13897 | } |
13898 | |
13899 | void notePostUse(Object O, const Expr *UseExpr) { |
13900 | UsageInfo &UI = UsageMap[O]; |
13901 | checkUsage(O, UI, UseExpr, UK_ModAsSideEffect, |
13902 | false); |
13903 | addUsage(O, UI, UseExpr, UK_Use); |
13904 | } |
13905 | |
13906 | void notePreMod(Object O, const Expr *ModExpr) { |
13907 | UsageInfo &UI = UsageMap[O]; |
13908 | |
13909 | checkUsage(O, UI, ModExpr, UK_ModAsValue, true); |
13910 | checkUsage(O, UI, ModExpr, UK_Use, false); |
13911 | } |
13912 | |
13913 | void notePostMod(Object O, const Expr *ModExpr, UsageKind UK) { |
13914 | UsageInfo &UI = UsageMap[O]; |
13915 | checkUsage(O, UI, ModExpr, UK_ModAsSideEffect, |
13916 | true); |
13917 | addUsage(O, UI, ModExpr, UK); |
13918 | } |
13919 | |
13920 | public: |
13921 | SequenceChecker(Sema &S, const Expr *E, |
13922 | SmallVectorImpl<const Expr *> &WorkList) |
13923 | : Base(S.Context), SemaRef(S), Region(Tree.root()), WorkList(WorkList) { |
13924 | Visit(E); |
13925 | |
13926 | |
13927 | (void)this->WorkList; |
13928 | } |
13929 | |
13930 | void VisitStmt(const Stmt *S) { |
13931 | |
13932 | } |
13933 | |
13934 | void VisitExpr(const Expr *E) { |
13935 | |
13936 | Base::VisitStmt(E); |
13937 | } |
13938 | |
13939 | void VisitCastExpr(const CastExpr *E) { |
13940 | Object O = Object(); |
13941 | if (E->getCastKind() == CK_LValueToRValue) |
13942 | O = getObject(E->getSubExpr(), false); |
13943 | |
13944 | if (O) |
13945 | notePreUse(O, E); |
13946 | VisitExpr(E); |
13947 | if (O) |
13948 | notePostUse(O, E); |
13949 | } |
13950 | |
13951 | void VisitSequencedExpressions(const Expr *SequencedBefore, |
13952 | const Expr *SequencedAfter) { |
13953 | SequenceTree::Seq BeforeRegion = Tree.allocate(Region); |
13954 | SequenceTree::Seq AfterRegion = Tree.allocate(Region); |
13955 | SequenceTree::Seq OldRegion = Region; |
13956 | |
13957 | { |
13958 | SequencedSubexpression SeqBefore(*this); |
13959 | Region = BeforeRegion; |
13960 | Visit(SequencedBefore); |
13961 | } |
13962 | |
13963 | Region = AfterRegion; |
13964 | Visit(SequencedAfter); |
13965 | |
13966 | Region = OldRegion; |
13967 | |
13968 | Tree.merge(BeforeRegion); |
13969 | Tree.merge(AfterRegion); |
13970 | } |
13971 | |
13972 | void VisitArraySubscriptExpr(const ArraySubscriptExpr *ASE) { |
13973 | |
13974 | |
13975 | |
13976 | if (SemaRef.getLangOpts().CPlusPlus17) |
13977 | VisitSequencedExpressions(ASE->getLHS(), ASE->getRHS()); |
13978 | else { |
13979 | Visit(ASE->getLHS()); |
13980 | Visit(ASE->getRHS()); |
13981 | } |
13982 | } |
13983 | |
13984 | void VisitBinPtrMemD(const BinaryOperator *BO) { VisitBinPtrMem(BO); } |
13985 | void VisitBinPtrMemI(const BinaryOperator *BO) { VisitBinPtrMem(BO); } |
13986 | void VisitBinPtrMem(const BinaryOperator *BO) { |
13987 | |
13988 | |
13989 | |
13990 | if (SemaRef.getLangOpts().CPlusPlus17) |
13991 | VisitSequencedExpressions(BO->getLHS(), BO->getRHS()); |
13992 | else { |
13993 | Visit(BO->getLHS()); |
13994 | Visit(BO->getRHS()); |
13995 | } |
13996 | } |
13997 | |
13998 | void VisitBinShl(const BinaryOperator *BO) { VisitBinShlShr(BO); } |
13999 | void VisitBinShr(const BinaryOperator *BO) { VisitBinShlShr(BO); } |
14000 | void VisitBinShlShr(const BinaryOperator *BO) { |
14001 | |
14002 | |
14003 | if (SemaRef.getLangOpts().CPlusPlus17) |
14004 | VisitSequencedExpressions(BO->getLHS(), BO->getRHS()); |
14005 | else { |
14006 | Visit(BO->getLHS()); |
14007 | Visit(BO->getRHS()); |
14008 | } |
14009 | } |
14010 | |
14011 | void VisitBinComma(const BinaryOperator *BO) { |
14012 | |
14013 | |
14014 | |
14015 | |
14016 | VisitSequencedExpressions(BO->getLHS(), BO->getRHS()); |
14017 | } |
14018 | |
14019 | void VisitBinAssign(const BinaryOperator *BO) { |
14020 | SequenceTree::Seq RHSRegion; |
14021 | SequenceTree::Seq LHSRegion; |
14022 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14023 | RHSRegion = Tree.allocate(Region); |
14024 | LHSRegion = Tree.allocate(Region); |
14025 | } else { |
14026 | RHSRegion = Region; |
14027 | LHSRegion = Region; |
14028 | } |
14029 | SequenceTree::Seq OldRegion = Region; |
14030 | |
14031 | |
14032 | |
14033 | |
14034 | |
14035 | |
14036 | |
14037 | Object O = getObject(BO->getLHS(), true); |
14038 | if (O) |
14039 | notePreMod(O, BO); |
14040 | |
14041 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14042 | |
14043 | |
14044 | { |
14045 | SequencedSubexpression SeqBefore(*this); |
14046 | Region = RHSRegion; |
14047 | Visit(BO->getRHS()); |
14048 | } |
14049 | |
14050 | Region = LHSRegion; |
14051 | Visit(BO->getLHS()); |
14052 | |
14053 | if (O && isa<CompoundAssignOperator>(BO)) |
14054 | notePostUse(O, BO); |
14055 | |
14056 | } else { |
14057 | |
14058 | Region = LHSRegion; |
14059 | Visit(BO->getLHS()); |
14060 | |
14061 | if (O && isa<CompoundAssignOperator>(BO)) |
14062 | notePostUse(O, BO); |
14063 | |
14064 | Region = RHSRegion; |
14065 | Visit(BO->getRHS()); |
14066 | } |
14067 | |
14068 | |
14069 | |
14070 | |
14071 | |
14072 | Region = OldRegion; |
14073 | if (O) |
14074 | notePostMod(O, BO, |
14075 | SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue |
14076 | : UK_ModAsSideEffect); |
14077 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14078 | Tree.merge(RHSRegion); |
14079 | Tree.merge(LHSRegion); |
14080 | } |
14081 | } |
14082 | |
14083 | void VisitCompoundAssignOperator(const CompoundAssignOperator *CAO) { |
14084 | VisitBinAssign(CAO); |
14085 | } |
14086 | |
14087 | void VisitUnaryPreInc(const UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } |
14088 | void VisitUnaryPreDec(const UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } |
14089 | void VisitUnaryPreIncDec(const UnaryOperator *UO) { |
14090 | Object O = getObject(UO->getSubExpr(), true); |
14091 | if (!O) |
14092 | return VisitExpr(UO); |
14093 | |
14094 | notePreMod(O, UO); |
14095 | Visit(UO->getSubExpr()); |
14096 | |
14097 | |
14098 | notePostMod(O, UO, |
14099 | SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue |
14100 | : UK_ModAsSideEffect); |
14101 | } |
14102 | |
14103 | void VisitUnaryPostInc(const UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } |
14104 | void VisitUnaryPostDec(const UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } |
14105 | void VisitUnaryPostIncDec(const UnaryOperator *UO) { |
14106 | Object O = getObject(UO->getSubExpr(), true); |
14107 | if (!O) |
14108 | return VisitExpr(UO); |
14109 | |
14110 | notePreMod(O, UO); |
14111 | Visit(UO->getSubExpr()); |
14112 | notePostMod(O, UO, UK_ModAsSideEffect); |
14113 | } |
14114 | |
14115 | void VisitBinLOr(const BinaryOperator *BO) { |
14116 | |
14117 | |
14118 | |
14119 | |
14120 | |
14121 | SequenceTree::Seq LHSRegion = Tree.allocate(Region); |
14122 | SequenceTree::Seq RHSRegion = Tree.allocate(Region); |
14123 | SequenceTree::Seq OldRegion = Region; |
14124 | |
14125 | EvaluationTracker Eval(*this); |
14126 | { |
14127 | SequencedSubexpression Sequenced(*this); |
14128 | Region = LHSRegion; |
14129 | Visit(BO->getLHS()); |
14130 | } |
14131 | |
14132 | |
14133 | |
14134 | |
14135 | bool EvalResult = false; |
14136 | bool EvalOK = Eval.evaluate(BO->getLHS(), EvalResult); |
14137 | bool ShouldVisitRHS = !EvalOK || (EvalOK && !EvalResult); |
14138 | if (ShouldVisitRHS) { |
14139 | Region = RHSRegion; |
14140 | Visit(BO->getRHS()); |
14141 | } |
14142 | |
14143 | Region = OldRegion; |
14144 | Tree.merge(LHSRegion); |
14145 | Tree.merge(RHSRegion); |
14146 | } |
14147 | |
14148 | void VisitBinLAnd(const BinaryOperator *BO) { |
14149 | |
14150 | |
14151 | |
14152 | |
14153 | |
14154 | SequenceTree::Seq LHSRegion = Tree.allocate(Region); |
14155 | SequenceTree::Seq RHSRegion = Tree.allocate(Region); |
14156 | SequenceTree::Seq OldRegion = Region; |
14157 | |
14158 | EvaluationTracker Eval(*this); |
14159 | { |
14160 | SequencedSubexpression Sequenced(*this); |
14161 | Region = LHSRegion; |
14162 | Visit(BO->getLHS()); |
14163 | } |
14164 | |
14165 | |
14166 | |
14167 | bool EvalResult = false; |
14168 | bool EvalOK = Eval.evaluate(BO->getLHS(), EvalResult); |
14169 | bool ShouldVisitRHS = !EvalOK || (EvalOK && EvalResult); |
14170 | if (ShouldVisitRHS) { |
14171 | Region = RHSRegion; |
14172 | Visit(BO->getRHS()); |
14173 | } |
14174 | |
14175 | Region = OldRegion; |
14176 | Tree.merge(LHSRegion); |
14177 | Tree.merge(RHSRegion); |
14178 | } |
14179 | |
14180 | void VisitAbstractConditionalOperator(const AbstractConditionalOperator *CO) { |
14181 | |
14182 | |
14183 | |
14184 | |
14185 | SequenceTree::Seq ConditionRegion = Tree.allocate(Region); |
14186 | |
14187 | |
14188 | |
14189 | |
14190 | |
14191 | |
14192 | |
14193 | |
14194 | |
14195 | |
14196 | |
14197 | |
14198 | |
14199 | |
14200 | |
14201 | SequenceTree::Seq TrueRegion = Tree.allocate(Region); |
14202 | SequenceTree::Seq FalseRegion = Tree.allocate(Region); |
14203 | SequenceTree::Seq OldRegion = Region; |
14204 | |
14205 | EvaluationTracker Eval(*this); |
14206 | { |
14207 | SequencedSubexpression Sequenced(*this); |
14208 | Region = ConditionRegion; |
14209 | Visit(CO->getCond()); |
14210 | } |
14211 | |
14212 | |
14213 | |
14214 | |
14215 | |
14216 | |
14217 | |
14218 | bool EvalResult = false; |
14219 | bool EvalOK = Eval.evaluate(CO->getCond(), EvalResult); |
14220 | bool ShouldVisitTrueExpr = !EvalOK || (EvalOK && EvalResult); |
14221 | bool ShouldVisitFalseExpr = !EvalOK || (EvalOK && !EvalResult); |
14222 | if (ShouldVisitTrueExpr) { |
14223 | Region = TrueRegion; |
14224 | Visit(CO->getTrueExpr()); |
14225 | } |
14226 | if (ShouldVisitFalseExpr) { |
14227 | Region = FalseRegion; |
14228 | Visit(CO->getFalseExpr()); |
14229 | } |
14230 | |
14231 | Region = OldRegion; |
14232 | Tree.merge(ConditionRegion); |
14233 | Tree.merge(TrueRegion); |
14234 | Tree.merge(FalseRegion); |
14235 | } |
14236 | |
14237 | void VisitCallExpr(const CallExpr *CE) { |
14238 | |
14239 | |
14240 | if (CE->isUnevaluatedBuiltinCall(Context)) |
14241 | return; |
14242 | |
14243 | |
14244 | |
14245 | |
14246 | |
14247 | |
14248 | |
14249 | SequencedSubexpression Sequenced(*this); |
14250 | SemaRef.runWithSufficientStackSpace(CE->getExprLoc(), [&] { |
14251 | |
14252 | |
14253 | |
14254 | SequenceTree::Seq CalleeRegion; |
14255 | SequenceTree::Seq OtherRegion; |
14256 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14257 | CalleeRegion = Tree.allocate(Region); |
14258 | OtherRegion = Tree.allocate(Region); |
14259 | } else { |
14260 | CalleeRegion = Region; |
14261 | OtherRegion = Region; |
14262 | } |
14263 | SequenceTree::Seq OldRegion = Region; |
14264 | |
14265 | |
14266 | Region = CalleeRegion; |
14267 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14268 | SequencedSubexpression Sequenced(*this); |
14269 | Visit(CE->getCallee()); |
14270 | } else { |
14271 | Visit(CE->getCallee()); |
14272 | } |
14273 | |
14274 | |
14275 | Region = OtherRegion; |
14276 | for (const Expr *Argument : CE->arguments()) |
14277 | Visit(Argument); |
14278 | |
14279 | Region = OldRegion; |
14280 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14281 | Tree.merge(CalleeRegion); |
14282 | Tree.merge(OtherRegion); |
14283 | } |
14284 | }); |
14285 | } |
14286 | |
14287 | void VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *CXXOCE) { |
14288 | |
14289 | |
14290 | |
14291 | |
14292 | |
14293 | |
14294 | |
14295 | |
14296 | |
14297 | |
14298 | if (!SemaRef.getLangOpts().CPlusPlus17 || |
14299 | (CXXOCE->getNumArgs() != 2 && CXXOCE->getOperator() != OO_Call)) |
14300 | return VisitCallExpr(CXXOCE); |
14301 | |
14302 | enum { |
14303 | NoSequencing, |
14304 | LHSBeforeRHS, |
14305 | RHSBeforeLHS, |
14306 | LHSBeforeRest |
14307 | } SequencingKind; |
14308 | switch (CXXOCE->getOperator()) { |
14309 | case OO_Equal: |
14310 | case OO_PlusEqual: |
14311 | case OO_MinusEqual: |
14312 | case OO_StarEqual: |
14313 | case OO_SlashEqual: |
14314 | case OO_PercentEqual: |
14315 | case OO_CaretEqual: |
14316 | case OO_AmpEqual: |
14317 | case OO_PipeEqual: |
14318 | case OO_LessLessEqual: |
14319 | case OO_GreaterGreaterEqual: |
14320 | SequencingKind = RHSBeforeLHS; |
14321 | break; |
14322 | |
14323 | case OO_LessLess: |
14324 | case OO_GreaterGreater: |
14325 | case OO_AmpAmp: |
14326 | case OO_PipePipe: |
14327 | case OO_Comma: |
14328 | case OO_ArrowStar: |
14329 | case OO_Subscript: |
14330 | SequencingKind = LHSBeforeRHS; |
14331 | break; |
14332 | |
14333 | case OO_Call: |
14334 | SequencingKind = LHSBeforeRest; |
14335 | break; |
14336 | |
14337 | default: |
14338 | SequencingKind = NoSequencing; |
14339 | break; |
14340 | } |
14341 | |
14342 | if (SequencingKind == NoSequencing) |
14343 | return VisitCallExpr(CXXOCE); |
14344 | |
14345 | |
14346 | SequencedSubexpression Sequenced(*this); |
14347 | |
14348 | SemaRef.runWithSufficientStackSpace(CXXOCE->getExprLoc(), [&] { |
14349 | assert(SemaRef.getLangOpts().CPlusPlus17 && |
14350 | "Should only get there with C++17 and above!"); |
14351 | assert((CXXOCE->getNumArgs() == 2 || CXXOCE->getOperator() == OO_Call) && |
14352 | "Should only get there with an overloaded binary operator" |
14353 | " or an overloaded call operator!"); |
14354 | |
14355 | if (SequencingKind == LHSBeforeRest) { |
14356 | assert(CXXOCE->getOperator() == OO_Call && |
14357 | "We should only have an overloaded call operator here!"); |
14358 | |
14359 | |
14360 | |
14361 | |
14362 | |
14363 | |
14364 | |
14365 | |
14366 | SequenceTree::Seq PostfixExprRegion = Tree.allocate(Region); |
14367 | SequenceTree::Seq ArgsRegion = Tree.allocate(Region); |
14368 | SequenceTree::Seq OldRegion = Region; |
14369 | |
14370 | assert(CXXOCE->getNumArgs() >= 1 && |
14371 | "An overloaded call operator must have at least one argument" |
14372 | " for the postfix-expression!"); |
14373 | const Expr *PostfixExpr = CXXOCE->getArgs()[0]; |
14374 | llvm::ArrayRef<const Expr *> Args(CXXOCE->getArgs() + 1, |
14375 | CXXOCE->getNumArgs() - 1); |
14376 | |
14377 | |
14378 | { |
14379 | Region = PostfixExprRegion; |
14380 | SequencedSubexpression Sequenced(*this); |
14381 | Visit(PostfixExpr); |
14382 | } |
14383 | |
14384 | |
14385 | Region = ArgsRegion; |
14386 | for (const Expr *Arg : Args) |
14387 | Visit(Arg); |
14388 | |
14389 | Region = OldRegion; |
14390 | Tree.merge(PostfixExprRegion); |
14391 | Tree.merge(ArgsRegion); |
14392 | } else { |
14393 | assert(CXXOCE->getNumArgs() == 2 && |
14394 | "Should only have two arguments here!"); |
14395 | assert((SequencingKind == LHSBeforeRHS || |
14396 | SequencingKind == RHSBeforeLHS) && |
14397 | "Unexpected sequencing kind!"); |
14398 | |
14399 | |
14400 | |
14401 | const Expr *E1 = CXXOCE->getArg(0); |
14402 | const Expr *E2 = CXXOCE->getArg(1); |
14403 | if (SequencingKind == RHSBeforeLHS) |
14404 | std::swap(E1, E2); |
14405 | |
14406 | return VisitSequencedExpressions(E1, E2); |
14407 | } |
14408 | }); |
14409 | } |
14410 | |
14411 | void VisitCXXConstructExpr(const CXXConstructExpr *CCE) { |
14412 | |
14413 | SequencedSubexpression Sequenced(*this); |
14414 | |
14415 | if (!CCE->isListInitialization()) |
14416 | return VisitExpr(CCE); |
14417 | |
14418 | |
14419 | SmallVector<SequenceTree::Seq, 32> Elts; |
14420 | SequenceTree::Seq Parent = Region; |
14421 | for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(), |
14422 | E = CCE->arg_end(); |
14423 | I != E; ++I) { |
14424 | Region = Tree.allocate(Parent); |
14425 | Elts.push_back(Region); |
14426 | Visit(*I); |
14427 | } |
14428 | |
14429 | |
14430 | Region = Parent; |
14431 | for (unsigned I = 0; I < Elts.size(); ++I) |
14432 | Tree.merge(Elts[I]); |
14433 | } |
14434 | |
14435 | void VisitInitListExpr(const InitListExpr *ILE) { |
14436 | if (!SemaRef.getLangOpts().CPlusPlus11) |
14437 | return VisitExpr(ILE); |
14438 | |
14439 | |
14440 | SmallVector<SequenceTree::Seq, 32> Elts; |
14441 | SequenceTree::Seq Parent = Region; |
14442 | for (unsigned I = 0; I < ILE->getNumInits(); ++I) { |
14443 | const Expr *E = ILE->getInit(I); |
14444 | if (!E) |
14445 | continue; |
14446 | Region = Tree.allocate(Parent); |
14447 | Elts.push_back(Region); |
14448 | Visit(E); |
14449 | } |
14450 | |
14451 | |
14452 | Region = Parent; |
14453 | for (unsigned I = 0; I < Elts.size(); ++I) |
14454 | Tree.merge(Elts[I]); |
14455 | } |
14456 | }; |
14457 | |
14458 | } |
14459 | |
14460 | void Sema::CheckUnsequencedOperations(const Expr *E) { |
14461 | SmallVector<const Expr *, 8> WorkList; |
14462 | WorkList.push_back(E); |
14463 | while (!WorkList.empty()) { |
14464 | const Expr *Item = WorkList.pop_back_val(); |
14465 | SequenceChecker(*this, Item, WorkList); |
14466 | } |
14467 | } |
14468 | |
14469 | void Sema::CheckCompletedExpr(Expr *E, SourceLocation CheckLoc, |
14470 | bool IsConstexpr) { |
14471 | llvm::SaveAndRestore<bool> ConstantContext( |
14472 | isConstantEvaluatedOverride, IsConstexpr || isa<ConstantExpr>(E)); |
14473 | CheckImplicitConversions(E, CheckLoc); |
14474 | if (!E->isInstantiationDependent()) |
14475 | CheckUnsequencedOperations(E); |
14476 | if (!IsConstexpr && !E->isValueDependent()) |
14477 | CheckForIntOverflow(E); |
14478 | DiagnoseMisalignedMembers(); |
14479 | } |
14480 | |
14481 | void Sema::CheckBitFieldInitialization(SourceLocation InitLoc, |
14482 | FieldDecl *BitField, |
14483 | Expr *Init) { |
14484 | (void) AnalyzeBitFieldAssignment(*this, BitField, Init, InitLoc); |
14485 | } |
14486 | |
14487 | static void diagnoseArrayStarInParamType(Sema &S, QualType PType, |
14488 | SourceLocation Loc) { |
14489 | if (!PType->isVariablyModifiedType()) |
14490 | return; |
14491 | if (const auto *PointerTy = dyn_cast<PointerType>(PType)) { |
14492 | diagnoseArrayStarInParamType(S, PointerTy->getPointeeType(), Loc); |
14493 | return; |
14494 | } |
14495 | if (const auto *ReferenceTy = dyn_cast<ReferenceType>(PType)) { |
14496 | diagnoseArrayStarInParamType(S, ReferenceTy->getPointeeType(), Loc); |
14497 | return; |
14498 | } |
14499 | if (const auto *ParenTy = dyn_cast<ParenType>(PType)) { |
14500 | diagnoseArrayStarInParamType(S, ParenTy->getInnerType(), Loc); |
14501 | return; |
14502 | } |
14503 | |
14504 | const ArrayType *AT = S.Context.getAsArrayType(PType); |
14505 | if (!AT) |
14506 | return; |
14507 | |
14508 | if (AT->getSizeModifier() != ArrayType::Star) { |
14509 | diagnoseArrayStarInParamType(S, AT->getElementType(), Loc); |
14510 | return; |
14511 | } |
14512 | |
14513 | S.Diag(Loc, diag::err_array_star_in_function_definition); |
14514 | } |
14515 | |
14516 | |
14517 | |
14518 | |
14519 | |
14520 | |
14521 | bool Sema::CheckParmsForFunctionDef(ArrayRef<ParmVarDecl *> Parameters, |
14522 | bool CheckParameterNames) { |
14523 | bool HasInvalidParm = false; |
14524 | for (ParmVarDecl *Param : Parameters) { |
14525 | |
14526 | |
14527 | |
14528 | |
14529 | |
14530 | if (!Param->isInvalidDecl() && |
14531 | RequireCompleteType(Param->getLocation(), Param->getType(), |
14532 | diag::err_typecheck_decl_incomplete_type)) { |
14533 | Param->setInvalidDecl(); |
14534 | HasInvalidParm = true; |
14535 | } |
14536 | |
14537 | |
14538 | |
14539 | if (CheckParameterNames && Param->getIdentifier() == nullptr && |
14540 | !Param->isImplicit() && !getLangOpts().CPlusPlus) { |
14541 | |
14542 | if (!getLangOpts().C2x) |
14543 | Diag(Param->getLocation(), diag::ext_parameter_name_omitted_c2x); |
14544 | } |
14545 | |
14546 | |
14547 | |
14548 | |
14549 | |
14550 | |
14551 | QualType PType = Param->getOriginalType(); |
14552 | |
14553 | |
14554 | diagnoseArrayStarInParamType(*this, PType, Param->getLocation()); |
14555 | |
14556 | |
14557 | |
14558 | |
14559 | if (!Param->isInvalidDecl()) { |
14560 | if (CXXRecordDecl *ClassDecl = Param->getType()->getAsCXXRecordDecl()) { |
14561 | if (!ClassDecl->isInvalidDecl() && |
14562 | !ClassDecl->hasIrrelevantDestructor() && |
14563 | !ClassDecl->isDependentContext() && |
14564 | ClassDecl->isParamDestroyedInCallee()) { |
14565 | CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); |
14566 | MarkFunctionReferenced(Param->getLocation(), Destructor); |
14567 | DiagnoseUseOfDecl(Destructor, Param->getLocation()); |
14568 | } |
14569 | } |
14570 | } |
14571 | |
14572 | |
14573 | |
14574 | |
14575 | |
14576 | if (const auto *Attr = Param->getAttr<PassObjectSizeAttr>()) |
14577 | if (!Param->getType().isConstQualified()) |
14578 | Diag(Param->getLocation(), diag::err_attribute_pointers_only) |
14579 | << Attr->getSpelling() << 1; |
14580 | |
14581 | |
14582 | if (LangOpts.CPlusPlus && !Param->isInvalidDecl()) { |
14583 | |
14584 | |
14585 | DeclContext *DC = Param->getDeclContext(); |
14586 | if (DC && DC->isFunctionOrMethod()) { |
14587 | if (auto *RD = dyn_cast<CXXRecordDecl>(DC->getParent())) |
14588 | CheckShadowInheritedFields(Param->getLocation(), Param->getDeclName(), |
14589 | RD, false); |
14590 | } |
14591 | } |
14592 | } |
14593 | |
14594 | return HasInvalidParm; |
14595 | } |
14596 | |
14597 | Optional<std::pair<CharUnits, CharUnits>> |
14598 | static getBaseAlignmentAndOffsetFromPtr(const Expr *E, ASTContext &Ctx); |
14599 | |
14600 | |
14601 | |
14602 | |
14603 | static std::pair<CharUnits, CharUnits> |
14604 | getDerivedToBaseAlignmentAndOffset(const CastExpr *CE, QualType DerivedType, |
14605 | CharUnits BaseAlignment, CharUnits Offset, |
14606 | ASTContext &Ctx) { |
14607 | for (auto PathI = CE->path_begin(), PathE = CE->path_end(); PathI != PathE; |
14608 | ++PathI) { |
14609 | const CXXBaseSpecifier *Base = *PathI; |
14610 | const CXXRecordDecl *BaseDecl = Base->getType()->getAsCXXRecordDecl(); |
14611 | if (Base->isVirtual()) { |
14612 | |
14613 | |
14614 | |
14615 | |
14616 | CharUnits NonVirtualAlignment = |
14617 | Ctx.getASTRecordLayout(BaseDecl).getNonVirtualAlignment(); |
14618 | BaseAlignment = std::min(BaseAlignment, NonVirtualAlignment); |
14619 | Offset = CharUnits::Zero(); |
14620 | } else { |
14621 | const ASTRecordLayout &RL = |
14622 | Ctx.getASTRecordLayout(DerivedType->getAsCXXRecordDecl()); |
14623 | Offset += RL.getBaseClassOffset(BaseDecl); |
14624 | } |
14625 | DerivedType = Base->getType(); |
14626 | } |
14627 | |
14628 | return std::make_pair(BaseAlignment, Offset); |
14629 | } |
14630 | |
14631 | |
14632 | static Optional<std::pair<CharUnits, CharUnits>> |
14633 | getAlignmentAndOffsetFromBinAddOrSub(const Expr *PtrE, const Expr *IntE, |
14634 | bool IsSub, ASTContext &Ctx) { |
14635 | QualType PointeeType = PtrE->getType()->getPointeeType(); |
14636 | |
14637 | if (!PointeeType->isConstantSizeType()) |
14638 | return llvm::None; |
14639 | |
14640 | auto P = getBaseAlignmentAndOffsetFromPtr(PtrE, Ctx); |
14641 | |
14642 | if (!P) |
14643 | return llvm::None; |
14644 | |
14645 | CharUnits EltSize = Ctx.getTypeSizeInChars(PointeeType); |
14646 | if (Optional<llvm::APSInt> IdxRes = IntE->getIntegerConstantExpr(Ctx)) { |
14647 | CharUnits Offset = EltSize * IdxRes->getExtValue(); |
14648 | if (IsSub) |
14649 | Offset = -Offset; |
14650 | return std::make_pair(P->first, P->second + Offset); |
14651 | } |
14652 | |
14653 | |
14654 | |
14655 | |
14656 | return std::make_pair( |
14657 | P->first.alignmentAtOffset(P->second).alignmentAtOffset(EltSize), |
14658 | CharUnits::Zero()); |
14659 | } |
14660 | |
14661 | |
14662 | |
14663 | Optional<std::pair<CharUnits, CharUnits>> |
14664 | static getBaseAlignmentAndOffsetFromLValue(const Expr *E, ASTContext &Ctx) { |
14665 | E = E->IgnoreParens(); |
14666 | switch (E->getStmtClass()) { |
14667 | default: |
14668 | break; |
14669 | case Stmt::CStyleCastExprClass: |
14670 | case Stmt::CXXStaticCastExprClass: |
14671 | case Stmt::ImplicitCastExprClass: { |
14672 | auto *CE = cast<CastExpr>(E); |
14673 | const Expr *From = CE->getSubExpr(); |
14674 | switch (CE->getCastKind()) { |
14675 | default: |
14676 | break; |
14677 | case CK_NoOp: |
14678 | return getBaseAlignmentAndOffsetFromLValue(From, Ctx); |
14679 | case CK_UncheckedDerivedToBase: |
14680 | case CK_DerivedToBase: { |
14681 | auto P = getBaseAlignmentAndOffsetFromLValue(From, Ctx); |
14682 | if (!P) |
14683 | break; |
14684 | return getDerivedToBaseAlignmentAndOffset(CE, From->getType(), P->first, |
14685 | P->second, Ctx); |
14686 | } |
14687 | } |
14688 | break; |
14689 | } |
14690 | case Stmt::ArraySubscriptExprClass: { |
14691 | auto *ASE = cast<ArraySubscriptExpr>(E); |
14692 | return getAlignmentAndOffsetFromBinAddOrSub(ASE->getBase(), ASE->getIdx(), |
14693 | false, Ctx); |
14694 | } |
14695 | case Stmt::DeclRefExprClass: { |
14696 | if (auto *VD = dyn_cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl())) { |
14697 | |
14698 | |
14699 | if (!VD->getType()->isReferenceType()) |
14700 | return std::make_pair(Ctx.getDeclAlign(VD), CharUnits::Zero()); |
14701 | if (VD->hasInit()) |
14702 | return getBaseAlignmentAndOffsetFromLValue(VD->getInit(), Ctx); |
14703 | } |
14704 | break; |
14705 | } |
14706 | case Stmt::MemberExprClass: { |
14707 | auto *ME = cast<MemberExpr>(E); |
14708 | auto *FD = dyn_cast<FieldDecl>(ME->getMemberDecl()); |
14709 | if (!FD || FD->getType()->isReferenceType() || |
14710 | FD->getParent()->isInvalidDecl()) |
14711 | break; |
14712 | Optional<std::pair<CharUnits, CharUnits>> P; |
14713 | if (ME->isArrow()) |
14714 | P = getBaseAlignmentAndOffsetFromPtr(ME->getBase(), Ctx); |
14715 | else |
14716 | P = getBaseAlignmentAndOffsetFromLValue(ME->getBase(), Ctx); |
14717 | if (!P) |
14718 | break; |
14719 | const ASTRecordLayout &Layout = Ctx.getASTRecordLayout(FD->getParent()); |
14720 | uint64_t Offset = Layout.getFieldOffset(FD->getFieldIndex()); |
14721 | return std::make_pair(P->first, |
14722 | P->second + CharUnits::fromQuantity(Offset)); |
14723 | } |
14724 | case Stmt::UnaryOperatorClass: { |
14725 | auto *UO = cast<UnaryOperator>(E); |
14726 | switch (UO->getOpcode()) { |
14727 | default: |
14728 | break; |
14729 | case UO_Deref: |
14730 | return getBaseAlignmentAndOffsetFromPtr(UO->getSubExpr(), Ctx); |
14731 | } |
14732 | break; |
14733 | } |
14734 | case Stmt::BinaryOperatorClass: { |
14735 | auto *BO = cast<BinaryOperator>(E); |
14736 | auto Opcode = BO->getOpcode(); |
14737 | switch (Opcode) { |
14738 | default: |
14739 | break; |
14740 | case BO_Comma: |
14741 | return getBaseAlignmentAndOffsetFromLValue(BO->getRHS(), Ctx); |
14742 | } |
14743 | break; |
14744 | } |
14745 | } |
14746 | return llvm::None; |
14747 | } |
14748 | |
14749 | |
14750 | |
14751 | Optional<std::pair<CharUnits, CharUnits>> |
14752 | static getBaseAlignmentAndOffsetFromPtr(const Expr *E, ASTContext &Ctx) { |
14753 | E = E->IgnoreParens(); |
14754 | switch (E->getStmtClass()) { |
14755 | default: |
14756 | break; |
14757 | case Stmt::CStyleCastExprClass: |
14758 | case Stmt::CXXStaticCastExprClass: |
14759 | case Stmt::ImplicitCastExprClass: { |
14760 | auto *CE = cast<CastExpr>(E); |
14761 | const Expr *From = CE->getSubExpr(); |
14762 | switch (CE->getCastKind()) { |
14763 | default: |
14764 | break; |
14765 | case CK_NoOp: |
14766 | return getBaseAlignmentAndOffsetFromPtr(From, Ctx); |
14767 | case CK_ArrayToPointerDecay: |
14768 | return getBaseAlignmentAndOffsetFromLValue(From, Ctx); |
14769 | case CK_UncheckedDerivedToBase: |
14770 | case CK_DerivedToBase: { |
14771 | auto P = getBaseAlignmentAndOffsetFromPtr(From, Ctx); |
14772 | if (!P) |
14773 | break; |
14774 | return getDerivedToBaseAlignmentAndOffset( |
14775 | CE, From->getType()->getPointeeType(), P->first, P->second, Ctx); |
14776 | } |
14777 | } |
14778 | break; |
14779 | } |
14780 | case Stmt::CXXThisExprClass: { |
14781 | auto *RD = E->getType()->getPointeeType()->getAsCXXRecordDecl(); |
14782 | CharUnits Alignment = Ctx.getASTRecordLayout(RD).getNonVirtualAlignment(); |
14783 | return std::make_pair(Alignment, CharUnits::Zero()); |
14784 | } |
14785 | case Stmt::UnaryOperatorClass: { |
14786 | auto *UO = cast<UnaryOperator>(E); |
14787 | if (UO->getOpcode() == UO_AddrOf) |
14788 | return getBaseAlignmentAndOffsetFromLValue(UO->getSubExpr(), Ctx); |
14789 | break; |
14790 | } |
14791 | case Stmt::BinaryOperatorClass: { |
14792 | auto *BO = cast<BinaryOperator>(E); |
14793 | auto Opcode = BO->getOpcode(); |
14794 | switch (Opcode) { |
14795 | default: |
14796 | break; |
14797 | case BO_Add: |
14798 | case BO_Sub: { |
14799 | const Expr *LHS = BO->getLHS(), *RHS = BO->getRHS(); |
14800 | if (Opcode == BO_Add && !RHS->getType()->isIntegralOrEnumerationType()) |
14801 | std::swap(LHS, RHS); |
14802 | return getAlignmentAndOffsetFromBinAddOrSub(LHS, RHS, Opcode == BO_Sub, |
14803 | Ctx); |
14804 | } |
14805 | case BO_Comma: |
14806 | return getBaseAlignmentAndOffsetFromPtr(BO->getRHS(), Ctx); |
14807 | } |
14808 | break; |
14809 | } |
14810 | } |
14811 | return llvm::None; |
14812 | } |
14813 | |
14814 | static CharUnits getPresumedAlignmentOfPointer(const Expr *E, Sema &S) { |
14815 | |
14816 | Optional<std::pair<CharUnits, CharUnits>> P = |
14817 | getBaseAlignmentAndOffsetFromPtr(E, S.Context); |
14818 | |
14819 | if (P) |
14820 | return P->first.alignmentAtOffset(P->second); |
14821 | |
14822 | |
14823 | return S.Context.getTypeAlignInChars(E->getType()->getPointeeType()); |
14824 | } |
14825 | |
14826 | |
14827 | |
14828 | void Sema::CheckCastAlign(Expr *Op, QualType T, SourceRange TRange) { |
14829 | |
14830 | |
14831 | if (getDiagnostics().isIgnored(diag::warn_cast_align, TRange.getBegin())) |
14832 | return; |
14833 | |
14834 | |
14835 | if (T->isDependentType() || Op->getType()->isDependentType()) |
14836 | return; |
14837 | |
14838 | |
14839 | const PointerType *DestPtr = T->getAs<PointerType>(); |
14840 | if (!DestPtr) return; |
14841 | |
14842 | |
14843 | QualType DestPointee = DestPtr->getPointeeType(); |
14844 | if (DestPointee->isIncompleteType()) return; |
14845 | CharUnits DestAlign = Context.getTypeAlignInChars(DestPointee); |
14846 | if (DestAlign.isOne()) return; |
14847 | |
14848 | |
14849 | const PointerType *SrcPtr = Op->getType()->getAs<PointerType>(); |
14850 | if (!SrcPtr) return; |
14851 | QualType SrcPointee = SrcPtr->getPointeeType(); |
14852 | |
14853 | |
14854 | |
14855 | |
14856 | |
14857 | if (SrcPointee->isIncompleteType()) return; |
14858 | |
14859 | CharUnits SrcAlign = getPresumedAlignmentOfPointer(Op, *this); |
14860 | |
14861 | if (SrcAlign >= DestAlign) return; |
14862 | |
14863 | Diag(TRange.getBegin(), diag::warn_cast_align) |
14864 | << Op->getType() << T |
14865 | << static_cast<unsigned>(SrcAlign.getQuantity()) |
14866 | << static_cast<unsigned>(DestAlign.getQuantity()) |
14867 | << TRange << Op->getSourceRange(); |
14868 | } |
14869 | |
14870 | |
14871 | |
14872 | |
14873 | |
14874 | |
14875 | static bool IsTailPaddedMemberArray(Sema &S, const llvm::APInt &Size, |
14876 | const NamedDecl *ND) { |
14877 | if (Size != 1 || !ND) return false; |
14878 | |
14879 | const FieldDecl *FD = dyn_cast<FieldDecl>(ND); |
14880 | if (!FD) return false; |
14881 | |
14882 | |
14883 | |
14884 | |
14885 | TypeSourceInfo *TInfo = FD->getTypeSourceInfo(); |
14886 | while (TInfo) { |
14887 | TypeLoc TL = TInfo->getTypeLoc(); |
14888 | |
14889 | if (TypedefTypeLoc TTL = TL.getAs<TypedefTypeLoc>()) { |
14890 | const TypedefNameDecl *TDL = TTL.getTypedefNameDecl(); |
14891 | TInfo = TDL->getTypeSourceInfo(); |
14892 | continue; |
14893 | } |
14894 | if (ConstantArrayTypeLoc CTL = TL.getAs<ConstantArrayTypeLoc>()) { |
14895 | const Expr *SizeExpr = dyn_cast<IntegerLiteral>(CTL.getSizeExpr()); |
14896 | if (!SizeExpr || SizeExpr->getExprLoc().isMacroID()) |
14897 | return false; |
14898 | } |
14899 | break; |
14900 | } |
14901 | |
14902 | const RecordDecl *RD = dyn_cast<RecordDecl>(FD->getDeclContext()); |
14903 | if (!RD) return false; |
14904 | if (RD->isUnion()) return false; |
14905 | if (const CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) { |
14906 | if (!CRD->isStandardLayout()) return false; |
14907 | } |
14908 | |
14909 | |
14910 | const Decl *D = FD; |
14911 | while ((D = D->getNextDeclInContext())) |
14912 | if (isa<FieldDecl>(D)) |
14913 | return false; |
14914 | return true; |
14915 | } |
14916 | |
14917 | void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, |
14918 | const ArraySubscriptExpr *ASE, |
14919 | bool AllowOnePastEnd, bool IndexNegated) { |
14920 | |
14921 | if (isConstantEvaluated()) |
14922 | return; |
14923 | |
14924 | IndexExpr = IndexExpr->IgnoreParenImpCasts(); |
14925 | if (IndexExpr->isValueDependent()) |
14926 | return; |
14927 | |
14928 | const Type *EffectiveType = |
14929 | BaseExpr->getType()->getPointeeOrArrayElementType(); |
14930 | BaseExpr = BaseExpr->IgnoreParenCasts(); |
14931 | const ConstantArrayType *ArrayTy = |
14932 | Context.getAsConstantArrayType(BaseExpr->getType()); |
14933 | |
14934 | const Type *BaseType = |
14935 | ArrayTy == nullptr ? nullptr : ArrayTy->getElementType().getTypePtr(); |
14936 | bool IsUnboundedArray = (BaseType == nullptr); |
14937 | if (EffectiveType->isDependentType() || |
14938 | (!IsUnboundedArray && BaseType->isDependentType())) |
14939 | return; |
14940 | |
14941 | Expr::EvalResult Result; |
14942 | if (!IndexExpr->EvaluateAsInt(Result, Context, Expr::SE_AllowSideEffects)) |
14943 | return; |
14944 | |
14945 | llvm::APSInt index = Result.Val.getInt(); |
14946 | if (IndexNegated) { |
14947 | index.setIsUnsigned(false); |
14948 | index = -index; |
14949 | } |
14950 | |
14951 | const NamedDecl *ND = nullptr; |
14952 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |
14953 | ND = DRE->getDecl(); |
14954 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(BaseExpr)) |
14955 | ND = ME->getMemberDecl(); |
14956 | |
14957 | if (IsUnboundedArray) { |
14958 | if (index.isUnsigned() || !index.isNegative()) { |
14959 | const auto &ASTC = getASTContext(); |
14960 | unsigned AddrBits = |
14961 | ASTC.getTargetInfo().getPointerWidth(ASTC.getTargetAddressSpace( |
14962 | EffectiveType->getCanonicalTypeInternal())); |
14963 | if (index.getBitWidth() < AddrBits) |
14964 | index = index.zext(AddrBits); |
14965 | Optional<CharUnits> ElemCharUnits = |
14966 | ASTC.getTypeSizeInCharsIfKnown(EffectiveType); |
14967 | |
14968 | |
14969 | if (!ElemCharUnits) |
14970 | return; |
14971 | llvm::APInt ElemBytes(index.getBitWidth(), ElemCharUnits->getQuantity()); |
14972 | |
14973 | |
14974 | |
14975 | |
14976 | if (index.getActiveBits() <= AddrBits) { |
14977 | bool Overflow; |
14978 | llvm::APInt Product(index); |
14979 | Product += 1; |
14980 | Product = Product.umul_ov(ElemBytes, Overflow); |
14981 | if (!Overflow && Product.getActiveBits() <= AddrBits) |
14982 | return; |
14983 | } |
14984 | |
14985 | |
14986 | |
14987 | llvm::APInt MaxElems = llvm::APInt::getMaxValue(AddrBits); |
14988 | MaxElems = MaxElems.zext(std::max(AddrBits + 1, ElemBytes.getBitWidth())); |
14989 | MaxElems += 1; |
14990 | ElemBytes = ElemBytes.zextOrTrunc(MaxElems.getBitWidth()); |
14991 | MaxElems = MaxElems.udiv(ElemBytes); |
14992 | |
14993 | unsigned DiagID = |
14994 | ASE ? diag::warn_array_index_exceeds_max_addressable_bounds |
14995 | : diag::warn_ptr_arith_exceeds_max_addressable_bounds; |
14996 | |
14997 | |
14998 | |
14999 | DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr, |
15000 | PDiag(DiagID) |
15001 | << toString(index, 10, true) << AddrBits |
15002 | << (unsigned)ASTC.toBits(*ElemCharUnits) |
15003 | << toString(ElemBytes, 10, false) |
15004 | << toString(MaxElems, 10, false) |
15005 | << (unsigned)MaxElems.getLimitedValue(~0U) |
15006 | << IndexExpr->getSourceRange()); |
15007 | |
15008 | if (!ND) { |
15009 | |
15010 | while (const auto *ASE = dyn_cast<ArraySubscriptExpr>(BaseExpr)) |
15011 | BaseExpr = ASE->getBase()->IgnoreParenCasts(); |
15012 | if (const auto *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |
15013 | ND = DRE->getDecl(); |
15014 | if (const auto *ME = dyn_cast<MemberExpr>(BaseExpr)) |
15015 | ND = ME->getMemberDecl(); |
15016 | } |
15017 | |
15018 | if (ND) |
15019 | DiagRuntimeBehavior(ND->getBeginLoc(), BaseExpr, |
15020 | PDiag(diag::note_array_declared_here) << ND); |
15021 | } |
15022 | return; |
15023 | } |
15024 | |
15025 | if (index.isUnsigned() || !index.isNegative()) { |
15026 | |
15027 | |
15028 | |
15029 | |
15030 | |
15031 | |
15032 | if (BaseType->isIncompleteType()) |
15033 | return; |
15034 | |
15035 | llvm::APInt size = ArrayTy->getSize(); |
15036 | if (!size.isStrictlyPositive()) |
15037 | return; |
15038 | |
15039 | if (BaseType != EffectiveType) { |
15040 | |
15041 | uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType); |
15042 | uint64_t array_typesize = Context.getTypeSize(BaseType); |
15043 | |
15044 | if (!ptrarith_typesize) ptrarith_typesize = 1; |
15045 | if (ptrarith_typesize != array_typesize) { |
15046 | |
15047 | uint64_t ratio = array_typesize / ptrarith_typesize; |
15048 | |
15049 | |
15050 | if (ptrarith_typesize * ratio == array_typesize) |
15051 | size *= llvm::APInt(size.getBitWidth(), ratio); |
15052 | } |
15053 | } |
15054 | |
15055 | if (size.getBitWidth() > index.getBitWidth()) |
15056 | index = index.zext(size.getBitWidth()); |
15057 | else if (size.getBitWidth() < index.getBitWidth()) |
15058 | size = size.zext(index.getBitWidth()); |
15059 | |
15060 | |
15061 | |
15062 | |
15063 | |
15064 | if (AllowOnePastEnd ? index.ule(size) : index.ult(size)) |
15065 | return; |
15066 | |
15067 | |
15068 | |
15069 | |
15070 | if (IsTailPaddedMemberArray(*this, size, ND)) |
15071 | return; |
15072 | |
15073 | |
15074 | |
15075 | |
15076 | if (ASE) { |
15077 | SourceLocation RBracketLoc = SourceMgr.getSpellingLoc( |
15078 | ASE->getRBracketLoc()); |
15079 | if (SourceMgr.isInSystemHeader(RBracketLoc)) { |
15080 | SourceLocation IndexLoc = |
15081 | SourceMgr.getSpellingLoc(IndexExpr->getBeginLoc()); |
15082 | if (SourceMgr.isWrittenInSameFile(RBracketLoc, IndexLoc)) |
15083 | return; |
15084 | } |
15085 | } |
15086 | |
15087 | unsigned DiagID = ASE ? diag::warn_array_index_exceeds_bounds |
15088 | : diag::warn_ptr_arith_exceeds_bounds; |
15089 | |
15090 | DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr, |
15091 | PDiag(DiagID) << toString(index, 10, true) |
15092 | << toString(size, 10, true) |
15093 | << (unsigned)size.getLimitedValue(~0U) |
15094 | << IndexExpr->getSourceRange()); |
15095 | } else { |
15096 | unsigned DiagID = diag::warn_array_index_precedes_bounds; |
15097 | if (!ASE) { |
15098 | DiagID = diag::warn_ptr_arith_precedes_bounds; |
15099 | if (index.isNegative()) index = -index; |
15100 | } |
15101 | |
15102 | DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr, |
15103 | PDiag(DiagID) << toString(index, 10, true) |
15104 | << IndexExpr->getSourceRange()); |
15105 | } |
15106 | |
15107 | if (!ND) { |
15108 | |
15109 | while (const auto *ASE = dyn_cast<ArraySubscriptExpr>(BaseExpr)) |
15110 | BaseExpr = ASE->getBase()->IgnoreParenCasts(); |
15111 | if (const auto *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |
15112 | ND = DRE->getDecl(); |
15113 | if (const auto *ME = dyn_cast<MemberExpr>(BaseExpr)) |
15114 | ND = ME->getMemberDecl(); |
15115 | } |
15116 | |
15117 | if (ND) |
15118 | DiagRuntimeBehavior(ND->getBeginLoc(), BaseExpr, |
15119 | PDiag(diag::note_array_declared_here) << ND); |
15120 | } |
15121 | |
15122 | void Sema::CheckArrayAccess(const Expr *expr) { |
15123 | int AllowOnePastEnd = 0; |
15124 | while (expr) { |
15125 | expr = expr->IgnoreParenImpCasts(); |
15126 | switch (expr->getStmtClass()) { |
15127 | case Stmt::ArraySubscriptExprClass: { |
15128 | const ArraySubscriptExpr *ASE = cast<ArraySubscriptExpr>(expr); |
15129 | CheckArrayAccess(ASE->getBase(), ASE->getIdx(), ASE, |
15130 | AllowOnePastEnd > 0); |
15131 | expr = ASE->getBase(); |
15132 | break; |
15133 | } |
15134 | case Stmt::MemberExprClass: { |
15135 | expr = cast<MemberExpr>(expr)->getBase(); |
15136 | break; |
15137 | } |
15138 | case Stmt::OMPArraySectionExprClass: { |
15139 | const OMPArraySectionExpr *ASE = cast<OMPArraySectionExpr>(expr); |
15140 | if (ASE->getLowerBound()) |
15141 | CheckArrayAccess(ASE->getBase(), ASE->getLowerBound(), |
15142 | nullptr, AllowOnePastEnd > 0); |
15143 | return; |
15144 | } |
15145 | case Stmt::UnaryOperatorClass: { |
15146 | |
15147 | const UnaryOperator *UO = cast<UnaryOperator>(expr); |
15148 | expr = UO->getSubExpr(); |
15149 | switch (UO->getOpcode()) { |
15150 | case UO_AddrOf: |
15151 | AllowOnePastEnd++; |
15152 | break; |
15153 | case UO_Deref: |
15154 | AllowOnePastEnd--; |
15155 | break; |
15156 | default: |
15157 | return; |
15158 | } |
15159 | break; |
15160 | } |
15161 | case Stmt::ConditionalOperatorClass: { |
15162 | const ConditionalOperator *cond = cast<ConditionalOperator>(expr); |
15163 | if (const Expr *lhs = cond->getLHS()) |
15164 | CheckArrayAccess(lhs); |
15165 | if (const Expr *rhs = cond->getRHS()) |
15166 | CheckArrayAccess(rhs); |
15167 | return; |
15168 | } |
15169 | case Stmt::CXXOperatorCallExprClass: { |
15170 | const auto *OCE = cast<CXXOperatorCallExpr>(expr); |
15171 | for (const auto *Arg : OCE->arguments()) |
15172 | CheckArrayAccess(Arg); |
15173 | return; |
15174 | } |
15175 | default: |
15176 | return; |
15177 | } |
15178 | } |
15179 | } |
15180 | |
15181 | |
15182 | |
15183 | namespace { |
15184 | |
15185 | struct RetainCycleOwner { |
15186 | VarDecl *Variable = nullptr; |
15187 | SourceRange Range; |
15188 | SourceLocation Loc; |
15189 | bool Indirect = false; |
15190 | |
15191 | RetainCycleOwner() = default; |
15192 | |
15193 | void setLocsFrom(Expr *e) { |
15194 | Loc = e->getExprLoc(); |
15195 | Range = e->getSourceRange(); |
15196 | } |
15197 | }; |
15198 | |
15199 | } |
15200 | |
15201 | |
15202 | |
15203 | static bool considerVariable(VarDecl *var, Expr *ref, RetainCycleOwner &owner) { |
15204 | |
15205 | |
15206 | |
15207 | if (var->getType().getObjCLifetime() != Qualifiers::OCL_Strong) |
15208 | return false; |
15209 | |
15210 | owner.Variable = var; |
15211 | if (ref) |
15212 | owner.setLocsFrom(ref); |
15213 | return true; |
15214 | } |
15215 | |
15216 | static bool findRetainCycleOwner(Sema &S, Expr *e, RetainCycleOwner &owner) { |
15217 | while (true) { |
15218 | e = e->IgnoreParens(); |
15219 | if (CastExpr *cast = dyn_cast<CastExpr>(e)) { |
15220 | switch (cast->getCastKind()) { |
15221 | case CK_BitCast: |
15222 | case CK_LValueBitCast: |
15223 | case CK_LValueToRValue: |
15224 | case CK_ARCReclaimReturnedObject: |
15225 | e = cast->getSubExpr(); |
15226 | continue; |
15227 | |
15228 | default: |
15229 | return false; |
15230 | } |
15231 | } |
15232 | |
15233 | if (ObjCIvarRefExpr *ref = dyn_cast<ObjCIvarRefExpr>(e)) { |
15234 | ObjCIvarDecl *ivar = ref->getDecl(); |
15235 | if (ivar->getType().getObjCLifetime() != Qualifiers::OCL_Strong) |
15236 | return false; |
15237 | |
15238 | |
15239 | if (!findRetainCycleOwner(S, ref->getBase(), owner)) |
15240 | return false; |
15241 | |
15242 | if (ref->isFreeIvar()) owner.setLocsFrom(ref); |
15243 | owner.Indirect = true; |
15244 | return true; |
15245 | } |
15246 | |
15247 | if (DeclRefExpr *ref = dyn_cast<DeclRefExpr>(e)) { |
15248 | VarDecl *var = dyn_cast<VarDecl>(ref->getDecl()); |
15249 | if (!var) return false; |
15250 | return considerVariable(var, ref, owner); |
15251 | } |
15252 | |
15253 | if (MemberExpr *member = dyn_cast<MemberExpr>(e)) { |
15254 | if (member->isArrow()) return false; |
15255 | |
15256 | |
15257 | e = member->getBase(); |
15258 | continue; |
15259 | } |
15260 | |
15261 | if (PseudoObjectExpr *pseudo = dyn_cast<PseudoObjectExpr>(e)) { |
15262 | |
15263 | ObjCPropertyRefExpr *pre |
15264 | = dyn_cast<ObjCPropertyRefExpr>(pseudo->getSyntacticForm() |
15265 | ->IgnoreParens()); |
15266 | if (!pre) return false; |
15267 | if (pre->isImplicitProperty()) return false; |
15268 | ObjCPropertyDecl *property = pre->getExplicitProperty(); |
15269 | if (!property->isRetaining() && |
15270 | !(property->getPropertyIvarDecl() && |
15271 | property->getPropertyIvarDecl()->getType() |
15272 | .getObjCLifetime() == Qualifiers::OCL_Strong)) |
15273 | return false; |
15274 | |
15275 | owner.Indirect = true; |
15276 | if (pre->isSuperReceiver()) { |
15277 | owner.Variable = S.getCurMethodDecl()->getSelfDecl(); |
15278 | if (!owner.Variable) |
15279 | return false; |
15280 | owner.Loc = pre->getLocation(); |
15281 | owner.Range = pre->getSourceRange(); |
15282 | return true; |
15283 | } |
15284 | e = const_cast<Expr*>(cast<OpaqueValueExpr>(pre->getBase()) |
15285 | ->getSourceExpr()); |
15286 | continue; |
15287 | } |
15288 | |
15289 | |
15290 | |
15291 | return false; |
15292 | } |
15293 | } |
15294 | |
15295 | namespace { |
15296 | |
15297 | struct FindCaptureVisitor : EvaluatedExprVisitor<FindCaptureVisitor> { |
15298 | ASTContext &Context; |
15299 | VarDecl *Variable; |
15300 | Expr *Capturer = nullptr; |
15301 | bool VarWillBeReased = false; |
15302 | |
15303 | FindCaptureVisitor(ASTContext &Context, VarDecl *variable) |
15304 | : EvaluatedExprVisitor<FindCaptureVisitor>(Context), |
15305 | Context(Context), Variable(variable) {} |
15306 | |
15307 | void VisitDeclRefExpr(DeclRefExpr *ref) { |
15308 | if (ref->getDecl() == Variable && !Capturer) |
15309 | Capturer = ref; |
15310 | } |
15311 | |
15312 | void VisitObjCIvarRefExpr(ObjCIvarRefExpr *ref) { |
15313 | if (Capturer) return; |
15314 | Visit(ref->getBase()); |
15315 | if (Capturer && ref->isFreeIvar()) |
15316 | Capturer = ref; |
15317 | } |
15318 | |
15319 | void VisitBlockExpr(BlockExpr *block) { |
15320 | |
15321 | if (block->getBlockDecl()->capturesVariable(Variable)) |
15322 | Visit(block->getBlockDecl()->getBody()); |
15323 | } |
15324 | |
15325 | void VisitOpaqueValueExpr(OpaqueValueExpr *OVE) { |
15326 | if (Capturer) return; |
15327 | if (OVE->getSourceExpr()) |
15328 | Visit(OVE->getSourceExpr()); |
15329 | } |
15330 | |
15331 | void VisitBinaryOperator(BinaryOperator *BinOp) { |
15332 | if (!Variable || VarWillBeReased || BinOp->getOpcode() != BO_Assign) |
15333 | return; |
15334 | Expr *LHS = BinOp->getLHS(); |
15335 | if (const DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(LHS)) { |
15336 | if (DRE->getDecl() != Variable) |
15337 | return; |
15338 | if (Expr *RHS = BinOp->getRHS()) { |
15339 | RHS = RHS->IgnoreParenCasts(); |
15340 | Optional<llvm::APSInt> Value; |
15341 | VarWillBeReased = |
15342 | (RHS && (Value = RHS->getIntegerConstantExpr(Context)) && |
15343 | *Value == 0); |
15344 | } |
15345 | } |
15346 | } |
15347 | }; |
15348 | |
15349 | } |
15350 | |
15351 | |
15352 | |
15353 | static Expr *findCapturingExpr(Sema &S, Expr *e, RetainCycleOwner &owner) { |
15354 | assert(owner.Variable && owner.Loc.isValid()); |
15355 | |
15356 | e = e->IgnoreParenCasts(); |
15357 | |
15358 | |
15359 | if (ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(e)) { |
15360 | Selector Cmd = ME->getSelector(); |
15361 | if (Cmd.isUnarySelector() && Cmd.getNameForSlot(0) == "copy") { |
15362 | e = ME->getInstanceReceiver(); |
15363 | if (!e) |
15364 | return nullptr; |
15365 | e = e->IgnoreParenCasts(); |
15366 | } |
15367 | } else if (CallExpr *CE = dyn_cast<CallExpr>(e)) { |
15368 | if (CE->getNumArgs() == 1) { |
15369 | FunctionDecl *Fn = dyn_cast_or_null<FunctionDecl>(CE->getCalleeDecl()); |
15370 | if (Fn) { |
15371 | const IdentifierInfo *FnI = Fn->getIdentifier(); |
15372 | if (FnI && FnI->isStr("_Block_copy")) { |
15373 | e = CE->getArg(0)->IgnoreParenCasts(); |
15374 | } |
15375 | } |
15376 | } |
15377 | } |
15378 | |
15379 | BlockExpr *block = dyn_cast<BlockExpr>(e); |
15380 | if (!block || !block->getBlockDecl()->capturesVariable(owner.Variable)) |
15381 | return nullptr; |
15382 | |
15383 | FindCaptureVisitor visitor(S.Context, owner.Variable); |
15384 | visitor.Visit(block->getBlockDecl()->getBody()); |
15385 | return visitor.VarWillBeReased ? nullptr : visitor.Capturer; |
15386 | } |
15387 | |
15388 | static void diagnoseRetainCycle(Sema &S, Expr *capturer, |
15389 | RetainCycleOwner &owner) { |
15390 | assert(capturer); |
15391 | assert(owner.Variable && owner.Loc.isValid()); |
15392 | |
15393 | S.Diag(capturer->getExprLoc(), diag::warn_arc_retain_cycle) |
15394 | << owner.Variable << capturer->getSourceRange(); |
15395 | S.Diag(owner.Loc, diag::note_arc_retain_cycle_owner) |
15396 | << owner.Indirect << owner.Range; |
15397 | } |
15398 | |
15399 | |
15400 | |
15401 | static bool isSetterLikeSelector(Selector sel) { |
15402 | if (sel.isUnarySelector()) return false; |
15403 | |
15404 | StringRef str = sel.getNameForSlot(0); |
15405 | while (!str.empty() && str.front() == '_') str = str.substr(1); |
15406 | if (str.startswith("set")) |
15407 | str = str.substr(3); |
15408 | else if (str.startswith("add")) { |
15409 | |
15410 | if (sel.getNumArgs() == 1 && str.startswith("addOperationWithBlock")) |
15411 | return false; |
15412 | str = str.substr(3); |
15413 | } |
15414 | else |
15415 | return false; |
15416 | |
15417 | if (str.empty()) return true; |
15418 | return !isLowercase(str.front()); |
15419 | } |
15420 | |
15421 | static Optional<int> GetNSMutableArrayArgumentIndex(Sema &S, |
15422 | ObjCMessageExpr *Message) { |
15423 | bool IsMutableArray = S.NSAPIObj->isSubclassOfNSClass( |
15424 | Message->getReceiverInterface(), |
15425 | NSAPI::ClassId_NSMutableArray); |
15426 | if (!IsMutableArray) { |
15427 | return None; |
15428 | } |
15429 | |
15430 | Selector Sel = Message->getSelector(); |
15431 | |
15432 | Optional<NSAPI::NSArrayMethodKind> MKOpt = |
15433 | S.NSAPIObj->getNSArrayMethodKind(Sel); |
15434 | if (!MKOpt) { |
15435 | return None; |
15436 | } |
15437 | |
15438 | NSAPI::NSArrayMethodKind MK = *MKOpt; |
15439 | |
15440 | switch (MK) { |
15441 | case NSAPI::NSMutableArr_addObject: |
15442 | case NSAPI::NSMutableArr_insertObjectAtIndex: |
15443 | case NSAPI::NSMutableArr_setObjectAtIndexedSubscript: |
15444 | return 0; |
15445 | case NSAPI::NSMutableArr_replaceObjectAtIndex: |
15446 | return 1; |
15447 | |
15448 | default: |
15449 | return None; |
15450 | } |
15451 | |
15452 | return None; |
15453 | } |
15454 | |
15455 | static |
15456 | Optional<int> GetNSMutableDictionaryArgumentIndex(Sema &S, |
15457 | ObjCMessageExpr *Message) { |
15458 | bool IsMutableDictionary = S.NSAPIObj->isSubclassOfNSClass( |
15459 | Message->getReceiverInterface(), |
15460 | NSAPI::ClassId_NSMutableDictionary); |
15461 | if (!IsMutableDictionary) { |
15462 | return None; |
15463 | } |
15464 | |
15465 | Selector Sel = Message->getSelector(); |
15466 | |
15467 | Optional<NSAPI::NSDictionaryMethodKind> MKOpt = |
15468 | S.NSAPIObj->getNSDictionaryMethodKind(Sel); |
15469 | if (!MKOpt) { |
15470 | return None; |
15471 | } |
15472 | |
15473 | NSAPI::NSDictionaryMethodKind MK = *MKOpt; |
15474 | |
15475 | switch (MK) { |
15476 | case NSAPI::NSMutableDict_setObjectForKey: |
15477 | case NSAPI::NSMutableDict_setValueForKey: |
15478 | case NSAPI::NSMutableDict_setObjectForKeyedSubscript: |
15479 | return 0; |
15480 | |
15481 | default: |
15482 | return None; |
15483 | } |
15484 | |
15485 | return None; |
15486 | } |
15487 | |
15488 | static Optional<int> GetNSSetArgumentIndex(Sema &S, ObjCMessageExpr *Message) { |
15489 | bool IsMutableSet = S.NSAPIObj->isSubclassOfNSClass( |
15490 | Message->getReceiverInterface(), |
15491 | NSAPI::ClassId_NSMutableSet); |
15492 | |
15493 | bool IsMutableOrderedSet = S.NSAPIObj->isSubclassOfNSClass( |
15494 | Message->getReceiverInterface(), |
15495 | NSAPI::ClassId_NSMutableOrderedSet); |
15496 | if (!IsMutableSet && !IsMutableOrderedSet) { |
15497 | return None; |
15498 | } |
15499 | |
15500 | Selector Sel = Message->getSelector(); |
15501 | |
15502 | Optional<NSAPI::NSSetMethodKind> MKOpt = S.NSAPIObj->getNSSetMethodKind(Sel); |
15503 | if (!MKOpt) { |
15504 | return None; |
15505 | } |
15506 | |
15507 | NSAPI::NSSetMethodKind MK = *MKOpt; |
15508 | |
15509 | switch (MK) { |
15510 | case NSAPI::NSMutableSet_addObject: |
15511 | case NSAPI::NSOrderedSet_setObjectAtIndex: |
15512 | case NSAPI::NSOrderedSet_setObjectAtIndexedSubscript: |
15513 | case NSAPI::NSOrderedSet_insertObjectAtIndex: |
15514 | return 0; |
15515 | case NSAPI::NSOrderedSet_replaceObjectAtIndexWithObject: |
15516 | return 1; |
15517 | } |
15518 | |
15519 | return None; |
15520 | } |
15521 | |
15522 | void Sema::CheckObjCCircularContainer(ObjCMessageExpr *Message) { |
15523 | if (!Message->isInstanceMessage()) { |
15524 | return; |
15525 | } |
15526 | |
15527 | Optional<int> ArgOpt; |
15528 | |
15529 | if (!(ArgOpt = GetNSMutableArrayArgumentIndex(*this, Message)) && |
15530 | !(ArgOpt = GetNSMutableDictionaryArgumentIndex(*this, Message)) && |
15531 | !(ArgOpt = GetNSSetArgumentIndex(*this, Message))) { |
15532 | return; |
15533 | } |
15534 | |
15535 | int ArgIndex = *ArgOpt; |
15536 | |
15537 | Expr *Arg = Message->getArg(ArgIndex)->IgnoreImpCasts(); |
15538 | if (OpaqueValueExpr *OE = dyn_cast<OpaqueValueExpr>(Arg)) { |
15539 | Arg = OE->getSourceExpr()->IgnoreImpCasts(); |
15540 | } |
15541 | |
15542 | if (Message->getReceiverKind() == ObjCMessageExpr::SuperInstance) { |
15543 | if (DeclRefExpr *ArgRE = dyn_cast<DeclRefExpr>(Arg)) { |
15544 | if (ArgRE->isObjCSelfExpr()) { |
15545 | Diag(Message->getSourceRange().getBegin(), |
15546 | diag::warn_objc_circular_container) |
15547 | << ArgRE->getDecl() << StringRef("'super'"); |
15548 | } |
15549 | } |
15550 | } else { |
15551 | Expr *Receiver = Message->getInstanceReceiver()->IgnoreImpCasts(); |
15552 | |
15553 | if (OpaqueValueExpr *OE = dyn_cast<OpaqueValueExpr>(Receiver)) { |
15554 | Receiver = OE->getSourceExpr()->IgnoreImpCasts(); |
15555 | } |
15556 | |
15557 | if (DeclRefExpr *ReceiverRE = dyn_cast<DeclRefExpr>(Receiver)) { |
15558 | if (DeclRefExpr *ArgRE = dyn_cast<DeclRefExpr>(Arg)) { |
15559 | if (ReceiverRE->getDecl() == ArgRE->getDecl()) { |
15560 | ValueDecl *Decl = ReceiverRE->getDecl(); |
15561 | Diag(Message->getSourceRange().getBegin(), |
15562 | diag::warn_objc_circular_container) |
15563 | << Decl << Decl; |
15564 | if (!ArgRE->isObjCSelfExpr()) { |
15565 | Diag(Decl->getLocation(), |
15566 | diag::note_objc_circular_container_declared_here) |
15567 | << Decl; |
15568 | } |
15569 | } |
15570 | } |
15571 | } else if (ObjCIvarRefExpr *IvarRE = dyn_cast<ObjCIvarRefExpr>(Receiver)) { |
15572 | if (ObjCIvarRefExpr *IvarArgRE = dyn_cast<ObjCIvarRefExpr>(Arg)) { |
15573 | if (IvarRE->getDecl() == IvarArgRE->getDecl()) { |
15574 | ObjCIvarDecl *Decl = IvarRE->getDecl(); |
15575 | Diag(Message->getSourceRange().getBegin(), |
15576 | diag::warn_objc_circular_container) |
15577 | << Decl << Decl; |
15578 | Diag(Decl->getLocation(), |
15579 | diag::note_objc_circular_container_declared_here) |
15580 | << Decl; |
15581 | } |
15582 | } |
15583 | } |
15584 | } |
15585 | } |
15586 | |
15587 | |
15588 | void Sema::checkRetainCycles(ObjCMessageExpr *msg) { |
15589 | |
15590 | if (!msg->isInstanceMessage() || !isSetterLikeSelector(msg->getSelector())) |
15591 | return; |
15592 | |
15593 | |
15594 | RetainCycleOwner owner; |
15595 | if (msg->getReceiverKind() == ObjCMessageExpr::Instance) { |
15596 | if (!findRetainCycleOwner(*this, msg->getInstanceReceiver(), owner)) |
15597 | return; |
15598 | } else { |
15599 | assert(msg->getReceiverKind() == ObjCMessageExpr::SuperInstance); |
15600 | owner.Variable = getCurMethodDecl()->getSelfDecl(); |
15601 | owner.Loc = msg->getSuperLoc(); |
15602 | owner.Range = msg->getSuperLoc(); |
15603 | } |
15604 | |
15605 | |
15606 | const ObjCMethodDecl *MD = msg->getMethodDecl(); |
15607 | for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) { |
15608 | if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) { |
15609 | |
15610 | if (MD && MD->parameters()[i]->hasAttr<NoEscapeAttr>()) |
15611 | continue; |
15612 | return diagnoseRetainCycle(*this, capturer, owner); |
15613 | } |
15614 | } |
15615 | } |
15616 | |
15617 | |
15618 | void Sema::checkRetainCycles(Expr *receiver, Expr *argument) { |
15619 | RetainCycleOwner owner; |
15620 | if (!findRetainCycleOwner(*this, receiver, owner)) |
15621 | return; |
15622 | |
15623 | if (Expr *capturer = findCapturingExpr(*this, argument, owner)) |
15624 | diagnoseRetainCycle(*this, capturer, owner); |
15625 | } |
15626 | |
15627 | void Sema::checkRetainCycles(VarDecl *Var, Expr *Init) { |
15628 | RetainCycleOwner Owner; |
15629 | if (!considerVariable(Var, nullptr, Owner)) |
15630 | return; |
15631 | |
15632 | |
15633 | |
15634 | Owner.Loc = Var->getLocation(); |
15635 | Owner.Range = Var->getSourceRange(); |
15636 | |
15637 | if (Expr *Capturer = findCapturingExpr(*this, Init, Owner)) |
15638 | diagnoseRetainCycle(*this, Capturer, Owner); |
15639 | } |
15640 | |
15641 | static bool checkUnsafeAssignLiteral(Sema &S, SourceLocation Loc, |
15642 | Expr *RHS, bool isProperty) { |
15643 | |
15644 | |
15645 | |
15646 | RHS = RHS->IgnoreParenImpCasts(); |
15647 | |
15648 | |
15649 | |
15650 | Sema::ObjCLiteralKind Kind = S.CheckLiteralKind(RHS); |
15651 | if (Kind == Sema::LK_String || Kind == Sema::LK_None) |
15652 | return false; |
15653 | |
15654 | S.Diag(Loc, diag::warn_arc_literal_assign) |
15655 | << (unsigned) Kind |
15656 | << (isProperty ? 0 : 1) |
15657 | << RHS->getSourceRange(); |
15658 | |
15659 | return true; |
15660 | } |
15661 | |
15662 | static bool checkUnsafeAssignObject(Sema &S, SourceLocation Loc, |
15663 | Qualifiers::ObjCLifetime LT, |
15664 | Expr *RHS, bool isProperty) { |
15665 | |
15666 | while (ImplicitCastExpr *cast = dyn_cast<ImplicitCastExpr>(RHS)) { |
15667 | if (cast->getCastKind() == CK_ARCConsumeObject) { |
15668 | S.Diag(Loc, diag::warn_arc_retained_assign) |
15669 | << (LT == Qualifiers::OCL_ExplicitNone) |
15670 | << (isProperty ? 0 : 1) |
15671 | << RHS->getSourceRange(); |
15672 | return true; |
15673 | } |
15674 | RHS = cast->getSubExpr(); |
15675 | } |
15676 | |
15677 | if (LT == Qualifiers::OCL_Weak && |
15678 | checkUnsafeAssignLiteral(S, Loc, RHS, isProperty)) |
15679 | return true; |
15680 | |
15681 | return false; |
15682 | } |
15683 | |
15684 | bool Sema::checkUnsafeAssigns(SourceLocation Loc, |
15685 | QualType LHS, Expr *RHS) { |
15686 | Qualifiers::ObjCLifetime LT = LHS.getObjCLifetime(); |
15687 | |
15688 | if (LT != Qualifiers::OCL_Weak && LT != Qualifiers::OCL_ExplicitNone) |
15689 | return false; |
15690 | |
15691 | if (checkUnsafeAssignObject(*this, Loc, LT, RHS, false)) |
15692 | return true; |
15693 | |
15694 | return false; |
15695 | } |
15696 | |
15697 | void Sema::checkUnsafeExprAssigns(SourceLocation Loc, |
15698 | Expr *LHS, Expr *RHS) { |
15699 | QualType LHSType; |
15700 | |
15701 | |
15702 | ObjCPropertyRefExpr *PRE |
15703 | = dyn_cast<ObjCPropertyRefExpr>(LHS->IgnoreParens()); |
15704 | if (PRE && !PRE->isImplicitProperty()) { |
15705 | const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); |
15706 | if (PD) |
15707 | LHSType = PD->getType(); |
15708 | } |
15709 | |
15710 | if (LHSType.isNull()) |
15711 | LHSType = LHS->getType(); |
15712 | |
15713 | Qualifiers::ObjCLifetime LT = LHSType.getObjCLifetime(); |
15714 | |
15715 | if (LT == Qualifiers::OCL_Weak) { |
15716 | if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) |
15717 | getCurFunction()->markSafeWeakUse(LHS); |
15718 | } |
15719 | |
15720 | if (checkUnsafeAssigns(Loc, LHSType, RHS)) |
15721 | return; |
15722 | |
15723 | |
15724 | if (LT != Qualifiers::OCL_None) |
15725 | return; |
15726 | |
15727 | if (PRE) { |
15728 | if (PRE->isImplicitProperty()) |
15729 | return; |
15730 | const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); |
15731 | if (!PD) |
15732 | return; |
15733 | |
15734 | unsigned Attributes = PD->getPropertyAttributes(); |
15735 | if (Attributes & ObjCPropertyAttribute::kind_assign) { |
15736 | |
15737 | |
15738 | |
15739 | unsigned AsWrittenAttr = PD->getPropertyAttributesAsWritten(); |
15740 | if (!(AsWrittenAttr & ObjCPropertyAttribute::kind_assign) && |
15741 | LHSType->isObjCRetainableType()) |
15742 | return; |
15743 | |
15744 | while (ImplicitCastExpr *cast = dyn_cast<ImplicitCastExpr>(RHS)) { |
15745 | if (cast->getCastKind() == CK_ARCConsumeObject) { |
15746 | Diag(Loc, diag::warn_arc_retained_property_assign) |
15747 | << RHS->getSourceRange(); |
15748 | return; |
15749 | } |
15750 | RHS = cast->getSubExpr(); |
15751 | } |
15752 | } else if (Attributes & ObjCPropertyAttribute::kind_weak) { |
15753 | if (checkUnsafeAssignObject(*this, Loc, Qualifiers::OCL_Weak, RHS, true)) |
15754 | return; |
15755 | } |
15756 | } |
15757 | } |
15758 | |
15759 | |
15760 | |
15761 | static bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, |
15762 | SourceLocation StmtLoc, |
15763 | const NullStmt *Body) { |
15764 | |
15765 | |
15766 | |
15767 | |
15768 | |
15769 | if (Body->hasLeadingEmptyMacro()) |
15770 | return false; |
15771 | |
15772 | |
15773 | bool StmtLineInvalid; |
15774 | unsigned StmtLine = SourceMgr.getPresumedLineNumber(StmtLoc, |
15775 | &StmtLineInvalid); |
15776 | if (StmtLineInvalid) |
15777 | return false; |
15778 | |
15779 | bool BodyLineInvalid; |
15780 | unsigned BodyLine = SourceMgr.getSpellingLineNumber(Body->getSemiLoc(), |
15781 | &BodyLineInvalid); |
15782 | if (BodyLineInvalid) |
15783 | return false; |
15784 | |
15785 | |
15786 | if (StmtLine != BodyLine) |
15787 | return false; |
15788 | |
15789 | return true; |
15790 | } |
15791 | |
15792 | void Sema::DiagnoseEmptyStmtBody(SourceLocation StmtLoc, |
15793 | const Stmt *Body, |
15794 | unsigned DiagID) { |
15795 | |
15796 | |
15797 | if (CurrentInstantiationScope) |
15798 | return; |
15799 | |
15800 | |
15801 | const NullStmt *NBody = dyn_cast<NullStmt>(Body); |
15802 | if (!NBody) |
15803 | return; |
15804 | |
15805 | |
15806 | if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) |
15807 | return; |
15808 | |
15809 | Diag(NBody->getSemiLoc(), DiagID); |
15810 | Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); |
15811 | } |
15812 | |
15813 | void Sema::DiagnoseEmptyLoopBody(const Stmt *S, |
15814 | const Stmt *PossibleBody) { |
15815 | assert(!CurrentInstantiationScope); |
15816 | |
15817 | SourceLocation StmtLoc; |
15818 | const Stmt *Body; |
15819 | unsigned DiagID; |
15820 | if (const ForStmt *FS = dyn_cast<ForStmt>(S)) { |
15821 | StmtLoc = FS->getRParenLoc(); |
15822 | Body = FS->getBody(); |
15823 | DiagID = diag::warn_empty_for_body; |
15824 | } else if (const WhileStmt *WS = dyn_cast<WhileStmt>(S)) { |
15825 | StmtLoc = WS->getCond()->getSourceRange().getEnd(); |
15826 | Body = WS->getBody(); |
15827 | DiagID = diag::warn_empty_while_body; |
15828 | } else |
15829 | return; |
15830 | |
15831 | |
15832 | const NullStmt *NBody = dyn_cast<NullStmt>(Body); |
15833 | if (!NBody) |
15834 | return; |
15835 | |
15836 | |
15837 | if (Diags.isIgnored(DiagID, NBody->getSemiLoc())) |
15838 | return; |
15839 | |
15840 | |
15841 | if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) |
15842 | return; |
15843 | |
15844 | |
15845 | |
15846 | |
15847 | |
15848 | |
15849 | |
15850 | |
15851 | |
15852 | |
15853 | |
15854 | |
15855 | bool ProbableTypo = isa<CompoundStmt>(PossibleBody); |
15856 | if (!ProbableTypo) { |
15857 | bool BodyColInvalid; |
15858 | unsigned BodyCol = SourceMgr.getPresumedColumnNumber( |
15859 | PossibleBody->getBeginLoc(), &BodyColInvalid); |
15860 | if (BodyColInvalid) |
15861 | return; |
15862 | |
15863 | bool StmtColInvalid; |
15864 | unsigned StmtCol = |
15865 | SourceMgr.getPresumedColumnNumber(S->getBeginLoc(), &StmtColInvalid); |
15866 | if (StmtColInvalid) |
15867 | return; |
15868 | |
15869 | if (BodyCol > StmtCol) |
15870 | ProbableTypo = true; |
15871 | } |
15872 | |
15873 | if (ProbableTypo) { |
15874 | Diag(NBody->getSemiLoc(), DiagID); |
15875 | Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); |
15876 | } |
15877 | } |
15878 | |
15879 | |
15880 | |
15881 | |
15882 | void Sema::DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, |
15883 | SourceLocation OpLoc) { |
15884 | if (Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, OpLoc)) |
15885 | return; |
15886 | |
15887 | if (inTemplateInstantiation()) |
15888 | return; |
15889 | |
15890 | |
15891 | LHSExpr = LHSExpr->IgnoreParenImpCasts(); |
15892 | RHSExpr = RHSExpr->IgnoreParenImpCasts(); |
15893 | |
15894 | |
15895 | const CallExpr *CE = dyn_cast<CallExpr>(RHSExpr); |
15896 | if (!CE || CE->getNumArgs() != 1) |
15897 | return; |
15898 | |
15899 | |
15900 | if (!CE->isCallToStdMove()) |
15901 | return; |
15902 | |
15903 | |
15904 | RHSExpr = CE->getArg(0); |
15905 | |
15906 | const DeclRefExpr *LHSDeclRef = dyn_cast<DeclRefExpr>(LHSExpr); |
15907 | const DeclRefExpr *RHSDeclRef = dyn_cast<DeclRefExpr>(RHSExpr); |
15908 | |
15909 | |
15910 | if (LHSDeclRef && RHSDeclRef) { |
15911 | if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) |
15912 | return; |
15913 | if (LHSDeclRef->getDecl()->getCanonicalDecl() != |
15914 | RHSDeclRef->getDecl()->getCanonicalDecl()) |
15915 | return; |
15916 | |
15917 | Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() |
15918 | << LHSExpr->getSourceRange() |
15919 | << RHSExpr->getSourceRange(); |
15920 | return; |
15921 | } |
15922 | |
15923 | |
15924 | |
15925 | |
15926 | |
15927 | const Expr *LHSBase = LHSExpr; |
15928 | const Expr *RHSBase = RHSExpr; |
15929 | const MemberExpr *LHSME = dyn_cast<MemberExpr>(LHSExpr); |
15930 | const MemberExpr *RHSME = dyn_cast<MemberExpr>(RHSExpr); |
15931 | if (!LHSME || !RHSME) |
15932 | return; |
15933 | |
15934 | while (LHSME && RHSME) { |
15935 | if (LHSME->getMemberDecl()->getCanonicalDecl() != |
15936 | RHSME->getMemberDecl()->getCanonicalDecl()) |
15937 | return; |
15938 | |
15939 | LHSBase = LHSME->getBase(); |
15940 | RHSBase = RHSME->getBase(); |
15941 | LHSME = dyn_cast<MemberExpr>(LHSBase); |
15942 | RHSME = dyn_cast<MemberExpr>(RHSBase); |
15943 | } |
15944 | |
15945 | LHSDeclRef = dyn_cast<DeclRefExpr>(LHSBase); |
15946 | RHSDeclRef = dyn_cast<DeclRefExpr>(RHSBase); |
15947 | if (LHSDeclRef && RHSDeclRef) { |
15948 | if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) |
15949 | return; |
15950 | if (LHSDeclRef->getDecl()->getCanonicalDecl() != |
15951 | RHSDeclRef->getDecl()->getCanonicalDecl()) |
15952 | return; |
15953 | |
15954 | Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() |
15955 | << LHSExpr->getSourceRange() |
15956 | << RHSExpr->getSourceRange(); |
15957 | return; |
15958 | } |
15959 | |
15960 | if (isa<CXXThisExpr>(LHSBase) && isa<CXXThisExpr>(RHSBase)) |
15961 | Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() |
15962 | << LHSExpr->getSourceRange() |
15963 | << RHSExpr->getSourceRange(); |
15964 | } |
15965 | |
15966 | |
15967 | |
15968 | static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); |
15969 | |
15970 | |
15971 | static bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { |
15972 | |
15973 | |
15974 | |
15975 | return ED1->isComplete() && ED2->isComplete() && |
15976 | C.hasSameType(ED1->getIntegerType(), ED2->getIntegerType()); |
15977 | } |
15978 | |
15979 | |
15980 | static bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, |
15981 | FieldDecl *Field2) { |
15982 | if (!isLayoutCompatible(C, Field1->getType(), Field2->getType())) |
15983 | return false; |
15984 | |
15985 | if (Field1->isBitField() != Field2->isBitField()) |
15986 | return false; |
15987 | |
15988 | if (Field1->isBitField()) { |
15989 | |
15990 | unsigned Bits1 = Field1->getBitWidthValue(C); |
15991 | unsigned Bits2 = Field2->getBitWidthValue(C); |
15992 | |
15993 | if (Bits1 != Bits2) |
15994 | return false; |
15995 | } |
15996 | |
15997 | return true; |
15998 | } |
15999 | |
16000 | |
16001 | |
16002 | static bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, |
16003 | RecordDecl *RD2) { |
16004 | |
16005 | if (const CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(RD1)) { |
16006 | |
16007 | |
16008 | const CXXRecordDecl *D2CXX = cast<CXXRecordDecl>(RD2); |
16009 | |
16010 | if (D1CXX->getNumBases() != D2CXX->getNumBases()) |
16011 | return false; |
16012 | |
16013 | |
16014 | for (CXXRecordDecl::base_class_const_iterator |
16015 | Base1 = D1CXX->bases_begin(), |
16016 | BaseEnd1 = D1CXX->bases_end(), |
16017 | Base2 = D2CXX->bases_begin(); |
16018 | Base1 != BaseEnd1; |
16019 | ++Base1, ++Base2) { |
16020 | if (!isLayoutCompatible(C, Base1->getType(), Base2->getType())) |
16021 | return false; |
16022 | } |
16023 | } else if (const CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(RD2)) { |
16024 | |
16025 | if (D2CXX->getNumBases() > 0) |
16026 | return false; |
16027 | } |
16028 | |
16029 | |
16030 | RecordDecl::field_iterator Field2 = RD2->field_begin(), |
16031 | Field2End = RD2->field_end(), |
16032 | Field1 = RD1->field_begin(), |
16033 | Field1End = RD1->field_end(); |
16034 | for ( ; Field1 != Field1End && Field2 != Field2End; ++Field1, ++Field2) { |
16035 | if (!isLayoutCompatible(C, *Field1, *Field2)) |
16036 | return false; |
16037 | } |
16038 | if (Field1 != Field1End || Field2 != Field2End) |
16039 | return false; |
16040 | |
16041 | return true; |
16042 | } |
16043 | |
16044 | |
16045 | |
16046 | static bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, |
16047 | RecordDecl *RD2) { |
16048 | llvm::SmallPtrSet<FieldDecl *, 8> UnmatchedFields; |
16049 | for (auto *Field2 : RD2->fields()) |
16050 | UnmatchedFields.insert(Field2); |
16051 | |
16052 | for (auto *Field1 : RD1->fields()) { |
16053 | llvm::SmallPtrSet<FieldDecl *, 8>::iterator |
16054 | I = UnmatchedFields.begin(), |
16055 | E = UnmatchedFields.end(); |
16056 | |
16057 | for ( ; I != E; ++I) { |
16058 | if (isLayoutCompatible(C, Field1, *I)) { |
16059 | bool Result = UnmatchedFields.erase(*I); |
16060 | (void) Result; |
16061 | assert(Result); |
16062 | break; |
16063 | } |
16064 | } |
16065 | if (I == E) |
16066 | return false; |
16067 | } |
16068 | |
16069 | return UnmatchedFields.empty(); |
16070 | } |
16071 | |
16072 | static bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, |
16073 | RecordDecl *RD2) { |
16074 | if (RD1->isUnion() != RD2->isUnion()) |
16075 | return false; |
16076 | |
16077 | if (RD1->isUnion()) |
16078 | return isLayoutCompatibleUnion(C, RD1, RD2); |
16079 | else |
16080 | return isLayoutCompatibleStruct(C, RD1, RD2); |
16081 | } |
16082 | |
16083 | |
16084 | static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { |
16085 | if (T1.isNull() || T2.isNull()) |
16086 | return false; |
16087 | |
16088 | |
16089 | |
16090 | |
16091 | if (C.hasSameType(T1, T2)) |
16092 | return true; |
16093 | |
16094 | T1 = T1.getCanonicalType().getUnqualifiedType(); |
16095 | T2 = T2.getCanonicalType().getUnqualifiedType(); |
16096 | |
16097 | const Type::TypeClass TC1 = T1->getTypeClass(); |
16098 | const Type::TypeClass TC2 = T2->getTypeClass(); |
16099 | |
16100 | if (TC1 != TC2) |
16101 | return false; |
16102 | |
16103 | if (TC1 == Type::Enum) { |
16104 | return isLayoutCompatible(C, |
16105 | cast<EnumType>(T1)->getDecl(), |
16106 | cast<EnumType>(T2)->getDecl()); |
16107 | } else if (TC1 == Type::Record) { |
16108 | if (!T1->isStandardLayoutType() || !T2->isStandardLayoutType()) |
16109 | return false; |
16110 | |
16111 | return isLayoutCompatible(C, |
16112 | cast<RecordType>(T1)->getDecl(), |
16113 | cast<RecordType>(T2)->getDecl()); |
16114 | } |
16115 | |
16116 | return false; |
16117 | } |
16118 | |
16119 | |
16120 | |
16121 | |
16122 | |
16123 | |
16124 | |
16125 | |
16126 | |
16127 | |
16128 | |
16129 | |
16130 | |
16131 | |
16132 | static bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, |
16133 | const ValueDecl **VD, uint64_t *MagicValue, |
16134 | bool isConstantEvaluated) { |
16135 | while(true) { |
16136 | if (!TypeExpr) |
16137 | return false; |
16138 | |
16139 | TypeExpr = TypeExpr->IgnoreParenImpCasts()->IgnoreParenCasts(); |
16140 | |
16141 | switch (TypeExpr->getStmtClass()) { |
16142 | case Stmt::UnaryOperatorClass: { |
16143 | const UnaryOperator *UO = cast<UnaryOperator>(TypeExpr); |
16144 | if (UO->getOpcode() == UO_AddrOf || UO->getOpcode() == UO_Deref) { |
16145 | TypeExpr = UO->getSubExpr(); |
16146 | continue; |
16147 | } |
16148 | return false; |
16149 | } |
16150 | |
16151 | case Stmt::DeclRefExprClass: { |
16152 | const DeclRefExpr *DRE = cast<DeclRefExpr>(TypeExpr); |
16153 | *VD = DRE->getDecl(); |
16154 | return true; |
16155 | } |
16156 | |
16157 | case Stmt::IntegerLiteralClass: { |
16158 | const IntegerLiteral *IL = cast<IntegerLiteral>(TypeExpr); |
16159 | llvm::APInt MagicValueAPInt = IL->getValue(); |
16160 | if (MagicValueAPInt.getActiveBits() <= 64) { |
16161 | *MagicValue = MagicValueAPInt.getZExtValue(); |
16162 | return true; |
16163 | } else |
16164 | return false; |
16165 | } |
16166 | |
16167 | case Stmt::BinaryConditionalOperatorClass: |
16168 | case Stmt::ConditionalOperatorClass: { |
16169 | const AbstractConditionalOperator *ACO = |
16170 | cast<AbstractConditionalOperator>(TypeExpr); |
16171 | bool Result; |
16172 | if (ACO->getCond()->EvaluateAsBooleanCondition(Result, Ctx, |
16173 | isConstantEvaluated)) { |
16174 | if (Result) |
16175 | TypeExpr = ACO->getTrueExpr(); |
16176 | else |
16177 | TypeExpr = ACO->getFalseExpr(); |
16178 | continue; |
16179 | } |
16180 | return false; |
16181 | } |
16182 | |
16183 | case Stmt::BinaryOperatorClass: { |
16184 | const BinaryOperator *BO = cast<BinaryOperator>(TypeExpr); |
16185 | if (BO->getOpcode() == BO_Comma) { |
16186 | TypeExpr = BO->getRHS(); |
16187 | continue; |
16188 | } |
16189 | return false; |
16190 | } |
16191 | |
16192 | default: |
16193 | return false; |
16194 | } |
16195 | } |
16196 | } |
16197 | |
16198 | |
16199 | |
16200 | |
16201 | |
16202 | |
16203 | |
16204 | |
16205 | |
16206 | |
16207 | |
16208 | |
16209 | |
16210 | |
16211 | |
16212 | |
16213 | static bool GetMatchingCType( |
16214 | const IdentifierInfo *ArgumentKind, const Expr *TypeExpr, |
16215 | const ASTContext &Ctx, |
16216 | const llvm::DenseMap<Sema::TypeTagMagicValue, Sema::TypeTagData> |
16217 | *MagicValues, |
16218 | bool &FoundWrongKind, Sema::TypeTagData &TypeInfo, |
16219 | bool isConstantEvaluated) { |
16220 | FoundWrongKind = false; |
16221 | |
16222 | |
16223 | const ValueDecl *VD = nullptr; |
16224 | |
16225 | uint64_t MagicValue; |
16226 | |
16227 | if (!FindTypeTagExpr(TypeExpr, Ctx, &VD, &MagicValue, isConstantEvaluated)) |
16228 | return false; |
16229 | |
16230 | if (VD) { |
16231 | if (TypeTagForDatatypeAttr *I = VD->getAttr<TypeTagForDatatypeAttr>()) { |
16232 | if (I->getArgumentKind() != ArgumentKind) { |
16233 | FoundWrongKind = true; |
16234 | return false; |
16235 | } |
16236 | TypeInfo.Type = I->getMatchingCType(); |
16237 | TypeInfo.LayoutCompatible = I->getLayoutCompatible(); |
16238 | TypeInfo.MustBeNull = I->getMustBeNull(); |
16239 | return true; |
16240 | } |
16241 | return false; |
16242 | } |
16243 | |
16244 | if (!MagicValues) |
16245 | return false; |
16246 | |
16247 | llvm::DenseMap<Sema::TypeTagMagicValue, |
16248 | Sema::TypeTagData>::const_iterator I = |
16249 | MagicValues->find(std::make_pair(ArgumentKind, MagicValue)); |
16250 | if (I == MagicValues->end()) |
16251 | return false; |
16252 | |
16253 | TypeInfo = I->second; |
16254 | return true; |
16255 | } |
16256 | |
16257 | void Sema::RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, |
16258 | uint64_t MagicValue, QualType Type, |
16259 | bool LayoutCompatible, |
16260 | bool MustBeNull) { |
16261 | if (!TypeTagForDatatypeMagicValues) |
16262 | TypeTagForDatatypeMagicValues.reset( |
16263 | new llvm::DenseMap<TypeTagMagicValue, TypeTagData>); |
16264 | |
16265 | TypeTagMagicValue Magic(ArgumentKind, MagicValue); |
16266 | (*TypeTagForDatatypeMagicValues)[Magic] = |
16267 | TypeTagData(Type, LayoutCompatible, MustBeNull); |
16268 | } |
16269 | |
16270 | static bool IsSameCharType(QualType T1, QualType T2) { |
16271 | const BuiltinType *BT1 = T1->getAs<BuiltinType>(); |
16272 | if (!BT1) |
16273 | return false; |
16274 | |
16275 | const BuiltinType *BT2 = T2->getAs<BuiltinType>(); |
16276 | if (!BT2) |
16277 | return false; |
16278 | |
16279 | BuiltinType::Kind T1Kind = BT1->getKind(); |
16280 | BuiltinType::Kind T2Kind = BT2->getKind(); |
16281 | |
16282 | return (T1Kind == BuiltinType::SChar && T2Kind == BuiltinType::Char_S) || |
16283 | (T1Kind == BuiltinType::UChar && T2Kind == BuiltinType::Char_U) || |
16284 | (T1Kind == BuiltinType::Char_U && T2Kind == BuiltinType::UChar) || |
16285 | (T1Kind == BuiltinType::Char_S && T2Kind == BuiltinType::SChar); |
16286 | } |
16287 | |
16288 | void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, |
16289 | const ArrayRef<const Expr *> ExprArgs, |
16290 | SourceLocation CallSiteLoc) { |
16291 | const IdentifierInfo *ArgumentKind = Attr->getArgumentKind(); |
16292 | bool IsPointerAttr = Attr->getIsPointer(); |
16293 | |
16294 | |
16295 | unsigned TypeTagIdxAST = Attr->getTypeTagIdx().getASTIndex(); |
16296 | if (TypeTagIdxAST >= ExprArgs.size()) { |
16297 | Diag(CallSiteLoc, diag::err_tag_index_out_of_range) |
16298 | << 0 << Attr->getTypeTagIdx().getSourceIndex(); |
16299 | return; |
16300 | } |
16301 | const Expr *TypeTagExpr = ExprArgs[TypeTagIdxAST]; |
16302 | bool FoundWrongKind; |
16303 | TypeTagData TypeInfo; |
16304 | if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context, |
16305 | TypeTagForDatatypeMagicValues.get(), FoundWrongKind, |
16306 | TypeInfo, isConstantEvaluated())) { |
16307 | if (FoundWrongKind) |
16308 | Diag(TypeTagExpr->getExprLoc(), |
16309 | diag::warn_type_tag_for_datatype_wrong_kind) |
16310 | << TypeTagExpr->getSourceRange(); |
16311 | return; |
16312 | } |
16313 | |
16314 | |
16315 | unsigned ArgumentIdxAST = Attr->getArgumentIdx().getASTIndex(); |
16316 | if (ArgumentIdxAST >= ExprArgs.size()) { |
16317 | Diag(CallSiteLoc, diag::err_tag_index_out_of_range) |
16318 | << 1 << Attr->getArgumentIdx().getSourceIndex(); |
16319 | return; |
16320 | } |
16321 | const Expr *ArgumentExpr = ExprArgs[ArgumentIdxAST]; |
16322 | if (IsPointerAttr) { |
16323 | |
16324 | if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(ArgumentExpr)) |
16325 | if (ICE->getType()->isVoidPointerType() && |
16326 | ICE->getCastKind() == CK_BitCast) |
16327 | ArgumentExpr = ICE->getSubExpr(); |
16328 | } |
16329 | QualType ArgumentType = ArgumentExpr->getType(); |
16330 | |
16331 | |
16332 | if (IsPointerAttr && ArgumentType->isVoidPointerType()) |
16333 | return; |
16334 | |
16335 | if (TypeInfo.MustBeNull) { |
16336 | |
16337 | if (!ArgumentExpr->isNullPointerConstant(Context, |
16338 | Expr::NPC_ValueDependentIsNotNull)) { |
16339 | Diag(ArgumentExpr->getExprLoc(), |
16340 | diag::warn_type_safety_null_pointer_required) |
16341 | << ArgumentKind->getName() |
16342 | << ArgumentExpr->getSourceRange() |
16343 | << TypeTagExpr->getSourceRange(); |
16344 | } |
16345 | return; |
16346 | } |
16347 | |
16348 | QualType RequiredType = TypeInfo.Type; |
16349 | if (IsPointerAttr) |
16350 | RequiredType = Context.getPointerType(RequiredType); |
16351 | |
16352 | bool mismatch = false; |
16353 | if (!TypeInfo.LayoutCompatible) { |
16354 | mismatch = !Context.hasSameType(ArgumentType, RequiredType); |
16355 | |
16356 | |
16357 | |
16358 | |
16359 | |
16360 | |
16361 | if (mismatch) |
16362 | if ((IsPointerAttr && IsSameCharType(ArgumentType->getPointeeType(), |
16363 | RequiredType->getPointeeType())) || |
16364 | (!IsPointerAttr && IsSameCharType(ArgumentType, RequiredType))) |
16365 | mismatch = false; |
16366 | } else |
16367 | if (IsPointerAttr) |
16368 | mismatch = !isLayoutCompatible(Context, |
16369 | ArgumentType->getPointeeType(), |
16370 | RequiredType->getPointeeType()); |
16371 | else |
16372 | mismatch = !isLayoutCompatible(Context, ArgumentType, RequiredType); |
16373 | |
16374 | if (mismatch) |
16375 | Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_type_mismatch) |
16376 | << ArgumentType << ArgumentKind |
16377 | << TypeInfo.LayoutCompatible << RequiredType |
16378 | << ArgumentExpr->getSourceRange() |
16379 | << TypeTagExpr->getSourceRange(); |
16380 | } |
16381 | |
16382 | void Sema::AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD, |
16383 | CharUnits Alignment) { |
16384 | MisalignedMembers.emplace_back(E, RD, MD, Alignment); |
16385 | } |
16386 | |
16387 | void Sema::DiagnoseMisalignedMembers() { |
16388 | for (MisalignedMember &m : MisalignedMembers) { |
16389 | const NamedDecl *ND = m.RD; |
16390 | if (ND->getName().empty()) { |
16391 | if (const TypedefNameDecl *TD = m.RD->getTypedefNameForAnonDecl()) |
16392 | ND = TD; |
16393 | } |
16394 | Diag(m.E->getBeginLoc(), diag::warn_taking_address_of_packed_member) |
16395 | << m.MD << ND << m.E->getSourceRange(); |
16396 | } |
16397 | MisalignedMembers.clear(); |
16398 | } |
16399 | |
16400 | void Sema::DiscardMisalignedMemberAddress(const Type *T, Expr *E) { |
16401 | E = E->IgnoreParens(); |
16402 | if (!T->isPointerType() && !T->isIntegerType()) |
16403 | return; |
16404 | if (isa<UnaryOperator>(E) && |
16405 | cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf) { |
16406 | auto *Op = cast<UnaryOperator>(E)->getSubExpr()->IgnoreParens(); |
16407 | if (isa<MemberExpr>(Op)) { |
16408 | auto MA = llvm::find(MisalignedMembers, MisalignedMember(Op)); |
16409 | if (MA != MisalignedMembers.end() && |
16410 | (T->isIntegerType() || |
16411 | (T->isPointerType() && (T->getPointeeType()->isIncompleteType() || |
16412 | Context.getTypeAlignInChars( |
16413 | T->getPointeeType()) <= MA->Alignment)))) |
16414 | MisalignedMembers.erase(MA); |
16415 | } |
16416 | } |
16417 | } |
16418 | |
16419 | void Sema::RefersToMemberWithReducedAlignment( |
16420 | Expr *E, |
16421 | llvm::function_ref<void(Expr *, RecordDecl *, FieldDecl *, CharUnits)> |
16422 | Action) { |
16423 | const auto *ME = dyn_cast<MemberExpr>(E); |
| 2 | | Assuming 'E' is a 'MemberExpr' | |
|
16424 | if (!ME) |
| |
16425 | return; |
16426 | |
16427 | |
16428 | if (E->getType().getQualifiers().hasUnaligned()) |
| 4 | | Assuming the condition is false | |
|
| |
16429 | return; |
16430 | |
16431 | |
16432 | |
16433 | SmallVector<FieldDecl *, 4> ReverseMemberChain; |
16434 | const MemberExpr *TopME = nullptr; |
16435 | bool AnyIsPacked = false; |
16436 | do { |
| 16 | | Loop condition is false. Exiting loop | |
|
16437 | QualType BaseType = ME->getBase()->getType(); |
16438 | if (BaseType->isDependentType()) |
| 6 | | Assuming the condition is false | |
|
| |
16439 | return; |
16440 | if (ME->isArrow()) |
| 8 | | Assuming the condition is false | |
|
| |
16441 | BaseType = BaseType->getPointeeType(); |
16442 | RecordDecl *RD = BaseType->castAs<RecordType>()->getDecl(); |
| 10 | | The object is a 'RecordType' | |
|
16443 | if (RD->isInvalidDecl()) |
| 11 | | Assuming the condition is false | |
|
| |
16444 | return; |
16445 | |
16446 | ValueDecl *MD = ME->getMemberDecl(); |
16447 | auto *FD = dyn_cast<FieldDecl>(MD); |
| 13 | | Assuming 'MD' is a 'FieldDecl' | |
|
16448 | |
16449 | if (!FD || FD->isInvalidDecl()) |
| 14 | | Assuming the condition is false | |
|
16450 | return; |
16451 | |
16452 | AnyIsPacked = |
16453 | AnyIsPacked || (RD->hasAttr<PackedAttr>() || MD->hasAttr<PackedAttr>()); |
16454 | ReverseMemberChain.push_back(FD); |
16455 | |
16456 | TopME = ME; |
16457 | ME = dyn_cast<MemberExpr>(ME->getBase()->IgnoreParens()); |
| 15 | | Assuming the object is not a 'MemberExpr' | |
|
16458 | } while (ME); |
16459 | assert(TopME && "We did not compute a topmost MemberExpr!"); |
16460 | |
16461 | |
16462 | if (!AnyIsPacked) |
| |
16463 | return; |
16464 | |
16465 | const Expr *TopBase = TopME->getBase()->IgnoreParenImpCasts(); |
16466 | const auto *DRE = dyn_cast<DeclRefExpr>(TopBase); |
| 18 | | Assuming 'TopBase' is not a 'DeclRefExpr' | |
|
16467 | |
16468 | |
16469 | |
16470 | if (!DRE && !isa<CXXThisExpr>(TopBase)) |
| 19 | | Assuming 'TopBase' is a 'CXXThisExpr' | |
|
| |
16471 | return; |
16472 | |
16473 | |
16474 | CharUnits ExpectedAlignment = Context.getTypeAlignInChars(E->getType()); |
16475 | |
16476 | |
16477 | if (ExpectedAlignment.isOne()) |
| 21 | | Calling 'CharUnits::isOne' | |
|
| 24 | | Returning from 'CharUnits::isOne' | |
|
| |
16478 | return; |
16479 | |
16480 | |
16481 | CharUnits Offset; |
16482 | for (auto I = ReverseMemberChain.rbegin(); I != ReverseMemberChain.rend(); |
| 26 | | Loop condition is false. Execution continues on line 16488 | |
|
16483 | I++) { |
16484 | Offset += Context.toCharUnitsFromBits(Context.getFieldOffset(*I)); |
16485 | } |
16486 | |
16487 | |
16488 | CharUnits CompleteObjectAlignment = Context.getTypeAlignInChars( |
16489 | ReverseMemberChain.back()->getParent()->getTypeForDecl()); |
16490 | |
16491 | |
16492 | |
16493 | if (DRE && !TopME->isArrow()) { |
16494 | const ValueDecl *VD = DRE->getDecl(); |
16495 | if (!VD->getType()->isReferenceType()) |
16496 | CompleteObjectAlignment = |
16497 | std::max(CompleteObjectAlignment, Context.getDeclAlign(VD)); |
16498 | } |
16499 | |
16500 | |
16501 | if (Offset % ExpectedAlignment != 0 || |
| |
16502 | |
16503 | |
16504 | CompleteObjectAlignment < ExpectedAlignment) { |
| 27 | | Calling 'CharUnits::operator<' | |
|
| 30 | | Returning from 'CharUnits::operator<' | |
|
16505 | |
16506 | |
16507 | |
16508 | |
16509 | |
16510 | |
16511 | |
16512 | |
16513 | FieldDecl *FD = nullptr; |
| 32 | | 'FD' initialized to a null pointer value | |
|
16514 | CharUnits Alignment; |
16515 | for (FieldDecl *FDI : ReverseMemberChain) { |
| 33 | | Assuming '__begin2' is equal to '__end2' | |
|
16516 | if (FDI->hasAttr<PackedAttr>() || |
16517 | FDI->getParent()->hasAttr<PackedAttr>()) { |
16518 | FD = FDI; |
16519 | Alignment = std::min( |
16520 | Context.getTypeAlignInChars(FD->getType()), |
16521 | Context.getTypeAlignInChars(FD->getParent()->getTypeForDecl())); |
16522 | break; |
16523 | } |
16524 | } |
16525 | assert(FD && "We did not find a packed FieldDecl!"); |
16526 | Action(E, FD->getParent(), FD, Alignment); |
| 34 | | Called C++ object pointer is null |
|
16527 | } |
16528 | } |
16529 | |
16530 | void Sema::CheckAddressOfPackedMember(Expr *rhs) { |
16531 | using namespace std::placeholders; |
16532 | |
16533 | RefersToMemberWithReducedAlignment( |
| 1 | Calling 'Sema::RefersToMemberWithReducedAlignment' | |
|
16534 | rhs, std::bind(&Sema::AddPotentialMisalignedMembers, std::ref(*this), _1, |
16535 | _2, _3, _4)); |
16536 | } |
16537 | |
16538 | ExprResult Sema::SemaBuiltinMatrixTranspose(CallExpr *TheCall, |
16539 | ExprResult CallResult) { |
16540 | if (checkArgCount(*this, TheCall, 1)) |
16541 | return ExprError(); |
16542 | |
16543 | ExprResult MatrixArg = DefaultLvalueConversion(TheCall->getArg(0)); |
16544 | if (MatrixArg.isInvalid()) |
16545 | return MatrixArg; |
16546 | Expr *Matrix = MatrixArg.get(); |
16547 | |
16548 | auto *MType = Matrix->getType()->getAs<ConstantMatrixType>(); |
16549 | if (!MType) { |
16550 | Diag(Matrix->getBeginLoc(), diag::err_builtin_matrix_arg); |
16551 | return ExprError(); |
16552 | } |
16553 | |
16554 | |
16555 | |
16556 | QualType ResultType = Context.getConstantMatrixType( |
16557 | MType->getElementType(), MType->getNumColumns(), MType->getNumRows()); |
16558 | |
16559 | |
16560 | TheCall->setType(ResultType); |
16561 | |
16562 | |
16563 | TheCall->setArg(0, Matrix); |
16564 | return CallResult; |
16565 | } |
16566 | |
16567 | |
16568 | static llvm::Optional<unsigned> |
16569 | getAndVerifyMatrixDimension(Expr *Expr, StringRef Name, Sema &S) { |
16570 | SourceLocation ErrorPos; |
16571 | Optional<llvm::APSInt> Value = |
16572 | Expr->getIntegerConstantExpr(S.Context, &ErrorPos); |
16573 | if (!Value) { |
16574 | S.Diag(Expr->getBeginLoc(), diag::err_builtin_matrix_scalar_unsigned_arg) |
16575 | << Name; |
16576 | return {}; |
16577 | } |
16578 | uint64_t Dim = Value->getZExtValue(); |
16579 | if (!ConstantMatrixType::isDimensionValid(Dim)) { |
16580 | S.Diag(Expr->getBeginLoc(), diag::err_builtin_matrix_invalid_dimension) |
16581 | << Name << ConstantMatrixType::getMaxElementsPerDimension(); |
16582 | return {}; |
16583 | } |
16584 | return Dim; |
16585 | } |
16586 | |
16587 | ExprResult Sema::SemaBuiltinMatrixColumnMajorLoad(CallExpr *TheCall, |
16588 | ExprResult CallResult) { |
16589 | if (!getLangOpts().MatrixTypes) { |
16590 | Diag(TheCall->getBeginLoc(), diag::err_builtin_matrix_disabled); |
16591 | return ExprError(); |
16592 | } |
16593 | |
16594 | if (checkArgCount(*this, TheCall, 4)) |
16595 | return ExprError(); |
16596 | |
16597 | unsigned PtrArgIdx = 0; |
16598 | Expr *PtrExpr = TheCall->getArg(PtrArgIdx); |
16599 | Expr *RowsExpr = TheCall->getArg(1); |
16600 | Expr *ColumnsExpr = TheCall->getArg(2); |
16601 | Expr *StrideExpr = TheCall->getArg(3); |
16602 | |
16603 | bool ArgError = false; |
16604 | |
16605 | |
16606 | { |
16607 | ExprResult PtrConv = DefaultFunctionArrayLvalueConversion(PtrExpr); |
16608 | if (PtrConv.isInvalid()) |
16609 | return PtrConv; |
16610 | PtrExpr = PtrConv.get(); |
16611 | TheCall->setArg(0, PtrExpr); |
16612 | if (PtrExpr->isTypeDependent()) { |
16613 | TheCall->setType(Context.DependentTy); |
16614 | return TheCall; |
16615 | } |
16616 | } |
16617 | |
16618 | auto *PtrTy = PtrExpr->getType()->getAs<PointerType>(); |
16619 | QualType ElementTy; |
16620 | if (!PtrTy) { |
16621 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_pointer_arg) |
16622 | << PtrArgIdx + 1; |
16623 | ArgError = true; |
16624 | } else { |
16625 | ElementTy = PtrTy->getPointeeType().getUnqualifiedType(); |
16626 | |
16627 | if (!ConstantMatrixType::isValidElementType(ElementTy)) { |
16628 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_pointer_arg) |
16629 | << PtrArgIdx + 1; |
16630 | ArgError = true; |
16631 | } |
16632 | } |
16633 | |
16634 | |
16635 | auto ApplyArgumentConversions = [this](Expr *E) { |
16636 | ExprResult Conv = DefaultLvalueConversion(E); |
16637 | if (Conv.isInvalid()) |
16638 | return Conv; |
16639 | |
16640 | return tryConvertExprToType(Conv.get(), Context.getSizeType()); |
16641 | }; |
16642 | |
16643 | |
16644 | ExprResult RowsConv = ApplyArgumentConversions(RowsExpr); |
16645 | if (!RowsConv.isInvalid()) { |
16646 | RowsExpr = RowsConv.get(); |
16647 | TheCall->setArg(1, RowsExpr); |
16648 | } else |
16649 | RowsExpr = nullptr; |
16650 | |
16651 | ExprResult ColumnsConv = ApplyArgumentConversions(ColumnsExpr); |
16652 | if (!ColumnsConv.isInvalid()) { |
16653 | ColumnsExpr = ColumnsConv.get(); |
16654 | TheCall->setArg(2, ColumnsExpr); |
16655 | } else |
16656 | ColumnsExpr = nullptr; |
16657 | |
16658 | |
16659 | |
16660 | if ((RowsExpr && RowsExpr->isTypeDependent()) || |
16661 | (ColumnsExpr && ColumnsExpr->isTypeDependent())) { |
16662 | TheCall->setType(Context.DependentTy); |
16663 | return CallResult; |
16664 | } |
16665 | |
16666 | |
16667 | llvm::Optional<unsigned> MaybeRows; |
16668 | if (RowsExpr) |
16669 | MaybeRows = getAndVerifyMatrixDimension(RowsExpr, "row", *this); |
16670 | |
16671 | llvm::Optional<unsigned> MaybeColumns; |
16672 | if (ColumnsExpr) |
16673 | MaybeColumns = getAndVerifyMatrixDimension(ColumnsExpr, "column", *this); |
16674 | |
16675 | |
16676 | ExprResult StrideConv = ApplyArgumentConversions(StrideExpr); |
16677 | if (StrideConv.isInvalid()) |
16678 | return ExprError(); |
16679 | StrideExpr = StrideConv.get(); |
16680 | TheCall->setArg(3, StrideExpr); |
16681 | |
16682 | if (MaybeRows) { |
16683 | if (Optional<llvm::APSInt> Value = |
16684 | StrideExpr->getIntegerConstantExpr(Context)) { |
16685 | uint64_t Stride = Value->getZExtValue(); |
16686 | if (Stride < *MaybeRows) { |
16687 | Diag(StrideExpr->getBeginLoc(), |
16688 | diag::err_builtin_matrix_stride_too_small); |
16689 | ArgError = true; |
16690 | } |
16691 | } |
16692 | } |
16693 | |
16694 | if (ArgError || !MaybeRows || !MaybeColumns) |
16695 | return ExprError(); |
16696 | |
16697 | TheCall->setType( |
16698 | Context.getConstantMatrixType(ElementTy, *MaybeRows, *MaybeColumns)); |
16699 | return CallResult; |
16700 | } |
16701 | |
16702 | ExprResult Sema::SemaBuiltinMatrixColumnMajorStore(CallExpr *TheCall, |
16703 | ExprResult CallResult) { |
16704 | if (checkArgCount(*this, TheCall, 3)) |
16705 | return ExprError(); |
16706 | |
16707 | unsigned PtrArgIdx = 1; |
16708 | Expr *MatrixExpr = TheCall->getArg(0); |
16709 | Expr *PtrExpr = TheCall->getArg(PtrArgIdx); |
16710 | Expr *StrideExpr = TheCall->getArg(2); |
16711 | |
16712 | bool ArgError = false; |
16713 | |
16714 | { |
16715 | ExprResult MatrixConv = DefaultLvalueConversion(MatrixExpr); |
16716 | if (MatrixConv.isInvalid()) |
16717 | return MatrixConv; |
16718 | MatrixExpr = MatrixConv.get(); |
16719 | TheCall->setArg(0, MatrixExpr); |
16720 | } |
16721 | if (MatrixExpr->isTypeDependent()) { |
16722 | TheCall->setType(Context.DependentTy); |
16723 | return TheCall; |
16724 | } |
16725 | |
16726 | auto *MatrixTy = MatrixExpr->getType()->getAs<ConstantMatrixType>(); |
16727 | if (!MatrixTy) { |
16728 | Diag(MatrixExpr->getBeginLoc(), diag::err_builtin_matrix_arg) << 0; |
16729 | ArgError = true; |
16730 | } |
16731 | |
16732 | { |
16733 | ExprResult PtrConv = DefaultFunctionArrayLvalueConversion(PtrExpr); |
16734 | if (PtrConv.isInvalid()) |
16735 | return PtrConv; |
16736 | PtrExpr = PtrConv.get(); |
16737 | TheCall->setArg(1, PtrExpr); |
16738 | if (PtrExpr->isTypeDependent()) { |
16739 | TheCall->setType(Context.DependentTy); |
16740 | return TheCall; |
16741 | } |
16742 | } |
16743 | |
16744 | |
16745 | auto *PtrTy = PtrExpr->getType()->getAs<PointerType>(); |
16746 | if (!PtrTy) { |
16747 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_pointer_arg) |
16748 | << PtrArgIdx + 1; |
16749 | ArgError = true; |
16750 | } else { |
16751 | QualType ElementTy = PtrTy->getPointeeType(); |
16752 | if (ElementTy.isConstQualified()) { |
16753 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_store_to_const); |
16754 | ArgError = true; |
16755 | } |
16756 | ElementTy = ElementTy.getUnqualifiedType().getCanonicalType(); |
16757 | if (MatrixTy && |
16758 | !Context.hasSameType(ElementTy, MatrixTy->getElementType())) { |
16759 | Diag(PtrExpr->getBeginLoc(), |
16760 | diag::err_builtin_matrix_pointer_arg_mismatch) |
16761 | << ElementTy << MatrixTy->getElementType(); |
16762 | ArgError = true; |
16763 | } |
16764 | } |
16765 | |
16766 | |
16767 | |
16768 | { |
16769 | ExprResult StrideConv = DefaultLvalueConversion(StrideExpr); |
16770 | if (StrideConv.isInvalid()) |
16771 | return StrideConv; |
16772 | |
16773 | StrideConv = tryConvertExprToType(StrideConv.get(), Context.getSizeType()); |
16774 | if (StrideConv.isInvalid()) |
16775 | return StrideConv; |
16776 | StrideExpr = StrideConv.get(); |
16777 | TheCall->setArg(2, StrideExpr); |
16778 | } |
16779 | |
16780 | |
16781 | if (MatrixTy) { |
16782 | if (Optional<llvm::APSInt> Value = |
16783 | StrideExpr->getIntegerConstantExpr(Context)) { |
16784 | uint64_t Stride = Value->getZExtValue(); |
16785 | if (Stride < MatrixTy->getNumRows()) { |
16786 | Diag(StrideExpr->getBeginLoc(), |
16787 | diag::err_builtin_matrix_stride_too_small); |
16788 | ArgError = true; |
16789 | } |
16790 | } |
16791 | } |
16792 | |
16793 | if (ArgError) |
16794 | return ExprError(); |
16795 | |
16796 | return CallResult; |
16797 | } |
16798 | |
16799 | |
16800 | |
16801 | |
16802 | |
16803 | void Sema::CheckTCBEnforcement(const CallExpr *TheCall, |
16804 | const FunctionDecl *Callee) { |
16805 | const FunctionDecl *Caller = getCurFunctionDecl(); |
16806 | |
16807 | |
16808 | if (!Caller || !Caller->hasAttr<EnforceTCBAttr>() || |
16809 | Callee->getBuiltinID() != 0) |
16810 | return; |
16811 | |
16812 | |
16813 | |
16814 | llvm::StringSet<> CalleeTCBs; |
16815 | for_each(Callee->specific_attrs<EnforceTCBAttr>(), |
16816 | [&](const auto *A) { CalleeTCBs.insert(A->getTCBName()); }); |
16817 | for_each(Callee->specific_attrs<EnforceTCBLeafAttr>(), |
16818 | [&](const auto *A) { CalleeTCBs.insert(A->getTCBName()); }); |
16819 | |
16820 | |
16821 | |
16822 | for_each( |
16823 | Caller->specific_attrs<EnforceTCBAttr>(), |
16824 | [&](const auto *A) { |
16825 | StringRef CallerTCB = A->getTCBName(); |
16826 | if (CalleeTCBs.count(CallerTCB) == 0) { |
16827 | this->Diag(TheCall->getExprLoc(), |
16828 | diag::warn_tcb_enforcement_violation) << Callee |
16829 | << CallerTCB; |
16830 | } |
16831 | }); |
16832 | } |