Bug Summary

File:build/source/clang/lib/Sema/SemaOpenMP.cpp
Warning:line 11514, column 3
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name SemaOpenMP.cpp -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 -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/source/build-llvm -resource-dir /usr/lib/llvm-16/lib/clang/16.0.0 -I tools/clang/lib/Sema -I /build/source/clang/lib/Sema -I /build/source/clang/include -I tools/clang/include -I include -I /build/source/llvm/include -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -D _FORTIFY_SOURCE=2 -D NDEBUG -U 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-16/lib/clang/16.0.0/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 -fmacro-prefix-map=/build/source/build-llvm=build-llvm -fmacro-prefix-map=/build/source/= -fcoverage-prefix-map=/build/source/build-llvm=build-llvm -fcoverage-prefix-map=/build/source/= -source-date-epoch 1670066131 -O3 -Wno-unused-command-line-argument -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 -Wno-misleading-indentation -std=c++17 -fdeprecated-macro -fdebug-compilation-dir=/build/source/build-llvm -fdebug-prefix-map=/build/source/build-llvm=build-llvm -fdebug-prefix-map=/build/source/= -fdebug-prefix-map=/build/source/build-llvm=build-llvm -fdebug-prefix-map=/build/source/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -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-2022-12-03-132955-15984-1 -x c++ /build/source/clang/lib/Sema/SemaOpenMP.cpp
1//===--- SemaOpenMP.cpp - Semantic Analysis for OpenMP constructs ---------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9/// This file implements semantic analysis for OpenMP directives and
10/// clauses.
11///
12//===----------------------------------------------------------------------===//
13
14#include "TreeTransform.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/ASTMutationListener.h"
17#include "clang/AST/CXXInheritance.h"
18#include "clang/AST/Decl.h"
19#include "clang/AST/DeclCXX.h"
20#include "clang/AST/DeclOpenMP.h"
21#include "clang/AST/OpenMPClause.h"
22#include "clang/AST/StmtCXX.h"
23#include "clang/AST/StmtOpenMP.h"
24#include "clang/AST/StmtVisitor.h"
25#include "clang/AST/TypeOrdering.h"
26#include "clang/Basic/DiagnosticSema.h"
27#include "clang/Basic/OpenMPKinds.h"
28#include "clang/Basic/PartialDiagnostic.h"
29#include "clang/Basic/TargetInfo.h"
30#include "clang/Sema/Initialization.h"
31#include "clang/Sema/Lookup.h"
32#include "clang/Sema/Scope.h"
33#include "clang/Sema/ScopeInfo.h"
34#include "clang/Sema/SemaInternal.h"
35#include "llvm/ADT/IndexedMap.h"
36#include "llvm/ADT/PointerEmbeddedInt.h"
37#include "llvm/ADT/STLExtras.h"
38#include "llvm/ADT/SmallSet.h"
39#include "llvm/ADT/StringExtras.h"
40#include "llvm/Frontend/OpenMP/OMPAssume.h"
41#include "llvm/Frontend/OpenMP/OMPConstants.h"
42#include <set>
43
44using namespace clang;
45using namespace llvm::omp;
46
47//===----------------------------------------------------------------------===//
48// Stack of data-sharing attributes for variables
49//===----------------------------------------------------------------------===//
50
51static const Expr *checkMapClauseExpressionBase(
52 Sema &SemaRef, Expr *E,
53 OMPClauseMappableExprCommon::MappableExprComponentList &CurComponents,
54 OpenMPClauseKind CKind, OpenMPDirectiveKind DKind, bool NoDiagnose);
55
56namespace {
57/// Default data sharing attributes, which can be applied to directive.
58enum DefaultDataSharingAttributes {
59 DSA_unspecified = 0, /// Data sharing attribute not specified.
60 DSA_none = 1 << 0, /// Default data sharing attribute 'none'.
61 DSA_shared = 1 << 1, /// Default data sharing attribute 'shared'.
62 DSA_private = 1 << 2, /// Default data sharing attribute 'private'.
63 DSA_firstprivate = 1 << 3, /// Default data sharing attribute 'firstprivate'.
64};
65
66/// Stack for tracking declarations used in OpenMP directives and
67/// clauses and their data-sharing attributes.
68class DSAStackTy {
69public:
70 struct DSAVarData {
71 OpenMPDirectiveKind DKind = OMPD_unknown;
72 OpenMPClauseKind CKind = OMPC_unknown;
73 unsigned Modifier = 0;
74 const Expr *RefExpr = nullptr;
75 DeclRefExpr *PrivateCopy = nullptr;
76 SourceLocation ImplicitDSALoc;
77 bool AppliedToPointee = false;
78 DSAVarData() = default;
79 DSAVarData(OpenMPDirectiveKind DKind, OpenMPClauseKind CKind,
80 const Expr *RefExpr, DeclRefExpr *PrivateCopy,
81 SourceLocation ImplicitDSALoc, unsigned Modifier,
82 bool AppliedToPointee)
83 : DKind(DKind), CKind(CKind), Modifier(Modifier), RefExpr(RefExpr),
84 PrivateCopy(PrivateCopy), ImplicitDSALoc(ImplicitDSALoc),
85 AppliedToPointee(AppliedToPointee) {}
86 };
87 using OperatorOffsetTy =
88 llvm::SmallVector<std::pair<Expr *, OverloadedOperatorKind>, 4>;
89 using DoacrossDependMapTy =
90 llvm::DenseMap<OMPDependClause *, OperatorOffsetTy>;
91 /// Kind of the declaration used in the uses_allocators clauses.
92 enum class UsesAllocatorsDeclKind {
93 /// Predefined allocator
94 PredefinedAllocator,
95 /// User-defined allocator
96 UserDefinedAllocator,
97 /// The declaration that represent allocator trait
98 AllocatorTrait,
99 };
100
101private:
102 struct DSAInfo {
103 OpenMPClauseKind Attributes = OMPC_unknown;
104 unsigned Modifier = 0;
105 /// Pointer to a reference expression and a flag which shows that the
106 /// variable is marked as lastprivate(true) or not (false).
107 llvm::PointerIntPair<const Expr *, 1, bool> RefExpr;
108 DeclRefExpr *PrivateCopy = nullptr;
109 /// true if the attribute is applied to the pointee, not the variable
110 /// itself.
111 bool AppliedToPointee = false;
112 };
113 using DeclSAMapTy = llvm::SmallDenseMap<const ValueDecl *, DSAInfo, 8>;
114 using UsedRefMapTy = llvm::SmallDenseMap<const ValueDecl *, const Expr *, 8>;
115 using LCDeclInfo = std::pair<unsigned, VarDecl *>;
116 using LoopControlVariablesMapTy =
117 llvm::SmallDenseMap<const ValueDecl *, LCDeclInfo, 8>;
118 /// Struct that associates a component with the clause kind where they are
119 /// found.
120 struct MappedExprComponentTy {
121 OMPClauseMappableExprCommon::MappableExprComponentLists Components;
122 OpenMPClauseKind Kind = OMPC_unknown;
123 };
124 using MappedExprComponentsTy =
125 llvm::DenseMap<const ValueDecl *, MappedExprComponentTy>;
126 using CriticalsWithHintsTy =
127 llvm::StringMap<std::pair<const OMPCriticalDirective *, llvm::APSInt>>;
128 struct ReductionData {
129 using BOKPtrType = llvm::PointerEmbeddedInt<BinaryOperatorKind, 16>;
130 SourceRange ReductionRange;
131 llvm::PointerUnion<const Expr *, BOKPtrType> ReductionOp;
132 ReductionData() = default;
133 void set(BinaryOperatorKind BO, SourceRange RR) {
134 ReductionRange = RR;
135 ReductionOp = BO;
136 }
137 void set(const Expr *RefExpr, SourceRange RR) {
138 ReductionRange = RR;
139 ReductionOp = RefExpr;
140 }
141 };
142 using DeclReductionMapTy =
143 llvm::SmallDenseMap<const ValueDecl *, ReductionData, 4>;
144 struct DefaultmapInfo {
145 OpenMPDefaultmapClauseModifier ImplicitBehavior =
146 OMPC_DEFAULTMAP_MODIFIER_unknown;
147 SourceLocation SLoc;
148 DefaultmapInfo() = default;
149 DefaultmapInfo(OpenMPDefaultmapClauseModifier M, SourceLocation Loc)
150 : ImplicitBehavior(M), SLoc(Loc) {}
151 };
152
153 struct SharingMapTy {
154 DeclSAMapTy SharingMap;
155 DeclReductionMapTy ReductionMap;
156 UsedRefMapTy AlignedMap;
157 UsedRefMapTy NontemporalMap;
158 MappedExprComponentsTy MappedExprComponents;
159 LoopControlVariablesMapTy LCVMap;
160 DefaultDataSharingAttributes DefaultAttr = DSA_unspecified;
161 SourceLocation DefaultAttrLoc;
162 DefaultmapInfo DefaultmapMap[OMPC_DEFAULTMAP_unknown];
163 OpenMPDirectiveKind Directive = OMPD_unknown;
164 DeclarationNameInfo DirectiveName;
165 Scope *CurScope = nullptr;
166 DeclContext *Context = nullptr;
167 SourceLocation ConstructLoc;
168 /// Set of 'depend' clauses with 'sink|source' dependence kind. Required to
169 /// get the data (loop counters etc.) about enclosing loop-based construct.
170 /// This data is required during codegen.
171 DoacrossDependMapTy DoacrossDepends;
172 /// First argument (Expr *) contains optional argument of the
173 /// 'ordered' clause, the second one is true if the regions has 'ordered'
174 /// clause, false otherwise.
175 llvm::Optional<std::pair<const Expr *, OMPOrderedClause *>> OrderedRegion;
176 unsigned AssociatedLoops = 1;
177 bool HasMutipleLoops = false;
178 const Decl *PossiblyLoopCounter = nullptr;
179 bool NowaitRegion = false;
180 bool UntiedRegion = false;
181 bool CancelRegion = false;
182 bool LoopStart = false;
183 bool BodyComplete = false;
184 SourceLocation PrevScanLocation;
185 SourceLocation PrevOrderedLocation;
186 SourceLocation InnerTeamsRegionLoc;
187 /// Reference to the taskgroup task_reduction reference expression.
188 Expr *TaskgroupReductionRef = nullptr;
189 llvm::DenseSet<QualType> MappedClassesQualTypes;
190 SmallVector<Expr *, 4> InnerUsedAllocators;
191 llvm::DenseSet<CanonicalDeclPtr<Decl>> ImplicitTaskFirstprivates;
192 /// List of globals marked as declare target link in this target region
193 /// (isOpenMPTargetExecutionDirective(Directive) == true).
194 llvm::SmallVector<DeclRefExpr *, 4> DeclareTargetLinkVarDecls;
195 /// List of decls used in inclusive/exclusive clauses of the scan directive.
196 llvm::DenseSet<CanonicalDeclPtr<Decl>> UsedInScanDirective;
197 llvm::DenseMap<CanonicalDeclPtr<const Decl>, UsesAllocatorsDeclKind>
198 UsesAllocatorsDecls;
199 /// Data is required on creating capture fields for implicit
200 /// default first|private clause.
201 struct ImplicitDefaultFDInfoTy {
202 /// Field decl.
203 const FieldDecl *FD = nullptr;
204 /// Nesting stack level
205 size_t StackLevel = 0;
206 /// Capture variable decl.
207 VarDecl *VD = nullptr;
208 ImplicitDefaultFDInfoTy(const FieldDecl *FD, size_t StackLevel,
209 VarDecl *VD)
210 : FD(FD), StackLevel(StackLevel), VD(VD) {}
211 };
212 /// List of captured fields
213 llvm::SmallVector<ImplicitDefaultFDInfoTy, 8>
214 ImplicitDefaultFirstprivateFDs;
215 Expr *DeclareMapperVar = nullptr;
216 SharingMapTy(OpenMPDirectiveKind DKind, DeclarationNameInfo Name,
217 Scope *CurScope, SourceLocation Loc)
218 : Directive(DKind), DirectiveName(Name), CurScope(CurScope),
219 ConstructLoc(Loc) {}
220 SharingMapTy() = default;
221 };
222
223 using StackTy = SmallVector<SharingMapTy, 4>;
224
225 /// Stack of used declaration and their data-sharing attributes.
226 DeclSAMapTy Threadprivates;
227 const FunctionScopeInfo *CurrentNonCapturingFunctionScope = nullptr;
228 SmallVector<std::pair<StackTy, const FunctionScopeInfo *>, 4> Stack;
229 /// true, if check for DSA must be from parent directive, false, if
230 /// from current directive.
231 OpenMPClauseKind ClauseKindMode = OMPC_unknown;
232 Sema &SemaRef;
233 bool ForceCapturing = false;
234 /// true if all the variables in the target executable directives must be
235 /// captured by reference.
236 bool ForceCaptureByReferenceInTargetExecutable = false;
237 CriticalsWithHintsTy Criticals;
238 unsigned IgnoredStackElements = 0;
239
240 /// Iterators over the stack iterate in order from innermost to outermost
241 /// directive.
242 using const_iterator = StackTy::const_reverse_iterator;
243 const_iterator begin() const {
244 return Stack.empty() ? const_iterator()
245 : Stack.back().first.rbegin() + IgnoredStackElements;
246 }
247 const_iterator end() const {
248 return Stack.empty() ? const_iterator() : Stack.back().first.rend();
249 }
250 using iterator = StackTy::reverse_iterator;
251 iterator begin() {
252 return Stack.empty() ? iterator()
253 : Stack.back().first.rbegin() + IgnoredStackElements;
254 }
255 iterator end() {
256 return Stack.empty() ? iterator() : Stack.back().first.rend();
257 }
258
259 // Convenience operations to get at the elements of the stack.
260
261 bool isStackEmpty() const {
262 return Stack.empty() ||
263 Stack.back().second != CurrentNonCapturingFunctionScope ||
264 Stack.back().first.size() <= IgnoredStackElements;
265 }
266 size_t getStackSize() const {
267 return isStackEmpty() ? 0
268 : Stack.back().first.size() - IgnoredStackElements;
269 }
270
271 SharingMapTy *getTopOfStackOrNull() {
272 size_t Size = getStackSize();
273 if (Size == 0)
274 return nullptr;
275 return &Stack.back().first[Size - 1];
276 }
277 const SharingMapTy *getTopOfStackOrNull() const {
278 return const_cast<DSAStackTy &>(*this).getTopOfStackOrNull();
279 }
280 SharingMapTy &getTopOfStack() {
281 assert(!isStackEmpty() && "no current directive")(static_cast <bool> (!isStackEmpty() && "no current directive"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"no current directive\""
, "clang/lib/Sema/SemaOpenMP.cpp", 281, __extension__ __PRETTY_FUNCTION__
))
;
282 return *getTopOfStackOrNull();
283 }
284 const SharingMapTy &getTopOfStack() const {
285 return const_cast<DSAStackTy &>(*this).getTopOfStack();
286 }
287
288 SharingMapTy *getSecondOnStackOrNull() {
289 size_t Size = getStackSize();
290 if (Size <= 1)
291 return nullptr;
292 return &Stack.back().first[Size - 2];
293 }
294 const SharingMapTy *getSecondOnStackOrNull() const {
295 return const_cast<DSAStackTy &>(*this).getSecondOnStackOrNull();
296 }
297
298 /// Get the stack element at a certain level (previously returned by
299 /// \c getNestingLevel).
300 ///
301 /// Note that nesting levels count from outermost to innermost, and this is
302 /// the reverse of our iteration order where new inner levels are pushed at
303 /// the front of the stack.
304 SharingMapTy &getStackElemAtLevel(unsigned Level) {
305 assert(Level < getStackSize() && "no such stack element")(static_cast <bool> (Level < getStackSize() &&
"no such stack element") ? void (0) : __assert_fail ("Level < getStackSize() && \"no such stack element\""
, "clang/lib/Sema/SemaOpenMP.cpp", 305, __extension__ __PRETTY_FUNCTION__
))
;
306 return Stack.back().first[Level];
307 }
308 const SharingMapTy &getStackElemAtLevel(unsigned Level) const {
309 return const_cast<DSAStackTy &>(*this).getStackElemAtLevel(Level);
310 }
311
312 DSAVarData getDSA(const_iterator &Iter, ValueDecl *D) const;
313
314 /// Checks if the variable is a local for OpenMP region.
315 bool isOpenMPLocal(VarDecl *D, const_iterator Iter) const;
316
317 /// Vector of previously declared requires directives
318 SmallVector<const OMPRequiresDecl *, 2> RequiresDecls;
319 /// omp_allocator_handle_t type.
320 QualType OMPAllocatorHandleT;
321 /// omp_depend_t type.
322 QualType OMPDependT;
323 /// omp_event_handle_t type.
324 QualType OMPEventHandleT;
325 /// omp_alloctrait_t type.
326 QualType OMPAlloctraitT;
327 /// Expression for the predefined allocators.
328 Expr *OMPPredefinedAllocators[OMPAllocateDeclAttr::OMPUserDefinedMemAlloc] = {
329 nullptr};
330 /// Vector of previously encountered target directives
331 SmallVector<SourceLocation, 2> TargetLocations;
332 SourceLocation AtomicLocation;
333 /// Vector of declare variant construct traits.
334 SmallVector<llvm::omp::TraitProperty, 8> ConstructTraits;
335
336public:
337 explicit DSAStackTy(Sema &S) : SemaRef(S) {}
338
339 /// Sets omp_allocator_handle_t type.
340 void setOMPAllocatorHandleT(QualType Ty) { OMPAllocatorHandleT = Ty; }
341 /// Gets omp_allocator_handle_t type.
342 QualType getOMPAllocatorHandleT() const { return OMPAllocatorHandleT; }
343 /// Sets omp_alloctrait_t type.
344 void setOMPAlloctraitT(QualType Ty) { OMPAlloctraitT = Ty; }
345 /// Gets omp_alloctrait_t type.
346 QualType getOMPAlloctraitT() const { return OMPAlloctraitT; }
347 /// Sets the given default allocator.
348 void setAllocator(OMPAllocateDeclAttr::AllocatorTypeTy AllocatorKind,
349 Expr *Allocator) {
350 OMPPredefinedAllocators[AllocatorKind] = Allocator;
351 }
352 /// Returns the specified default allocator.
353 Expr *getAllocator(OMPAllocateDeclAttr::AllocatorTypeTy AllocatorKind) const {
354 return OMPPredefinedAllocators[AllocatorKind];
355 }
356 /// Sets omp_depend_t type.
357 void setOMPDependT(QualType Ty) { OMPDependT = Ty; }
358 /// Gets omp_depend_t type.
359 QualType getOMPDependT() const { return OMPDependT; }
360
361 /// Sets omp_event_handle_t type.
362 void setOMPEventHandleT(QualType Ty) { OMPEventHandleT = Ty; }
363 /// Gets omp_event_handle_t type.
364 QualType getOMPEventHandleT() const { return OMPEventHandleT; }
365
366 bool isClauseParsingMode() const { return ClauseKindMode != OMPC_unknown; }
367 OpenMPClauseKind getClauseParsingMode() const {
368 assert(isClauseParsingMode() && "Must be in clause parsing mode.")(static_cast <bool> (isClauseParsingMode() && "Must be in clause parsing mode."
) ? void (0) : __assert_fail ("isClauseParsingMode() && \"Must be in clause parsing mode.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 368, __extension__ __PRETTY_FUNCTION__
))
;
369 return ClauseKindMode;
370 }
371 void setClauseParsingMode(OpenMPClauseKind K) { ClauseKindMode = K; }
372
373 bool isBodyComplete() const {
374 const SharingMapTy *Top = getTopOfStackOrNull();
375 return Top && Top->BodyComplete;
376 }
377 void setBodyComplete() { getTopOfStack().BodyComplete = true; }
378
379 bool isForceVarCapturing() const { return ForceCapturing; }
380 void setForceVarCapturing(bool V) { ForceCapturing = V; }
381
382 void setForceCaptureByReferenceInTargetExecutable(bool V) {
383 ForceCaptureByReferenceInTargetExecutable = V;
384 }
385 bool isForceCaptureByReferenceInTargetExecutable() const {
386 return ForceCaptureByReferenceInTargetExecutable;
387 }
388
389 void push(OpenMPDirectiveKind DKind, const DeclarationNameInfo &DirName,
390 Scope *CurScope, SourceLocation Loc) {
391 assert(!IgnoredStackElements &&(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 392, __extension__ __PRETTY_FUNCTION__
))
392 "cannot change stack while ignoring elements")(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 392, __extension__ __PRETTY_FUNCTION__
))
;
393 if (Stack.empty() ||
394 Stack.back().second != CurrentNonCapturingFunctionScope)
395 Stack.emplace_back(StackTy(), CurrentNonCapturingFunctionScope);
396 Stack.back().first.emplace_back(DKind, DirName, CurScope, Loc);
397 Stack.back().first.back().DefaultAttrLoc = Loc;
398 }
399
400 void pop() {
401 assert(!IgnoredStackElements &&(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 402, __extension__ __PRETTY_FUNCTION__
))
402 "cannot change stack while ignoring elements")(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 402, __extension__ __PRETTY_FUNCTION__
))
;
403 assert(!Stack.back().first.empty() &&(static_cast <bool> (!Stack.back().first.empty() &&
"Data-sharing attributes stack is empty!") ? void (0) : __assert_fail
("!Stack.back().first.empty() && \"Data-sharing attributes stack is empty!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 404, __extension__ __PRETTY_FUNCTION__
))
404 "Data-sharing attributes stack is empty!")(static_cast <bool> (!Stack.back().first.empty() &&
"Data-sharing attributes stack is empty!") ? void (0) : __assert_fail
("!Stack.back().first.empty() && \"Data-sharing attributes stack is empty!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 404, __extension__ __PRETTY_FUNCTION__
))
;
405 Stack.back().first.pop_back();
406 }
407
408 /// RAII object to temporarily leave the scope of a directive when we want to
409 /// logically operate in its parent.
410 class ParentDirectiveScope {
411 DSAStackTy &Self;
412 bool Active;
413
414 public:
415 ParentDirectiveScope(DSAStackTy &Self, bool Activate)
416 : Self(Self), Active(false) {
417 if (Activate)
418 enable();
419 }
420 ~ParentDirectiveScope() { disable(); }
421 void disable() {
422 if (Active) {
423 --Self.IgnoredStackElements;
424 Active = false;
425 }
426 }
427 void enable() {
428 if (!Active) {
429 ++Self.IgnoredStackElements;
430 Active = true;
431 }
432 }
433 };
434
435 /// Marks that we're started loop parsing.
436 void loopInit() {
437 assert(isOpenMPLoopDirective(getCurrentDirective()) &&(static_cast <bool> (isOpenMPLoopDirective(getCurrentDirective
()) && "Expected loop-based directive.") ? void (0) :
__assert_fail ("isOpenMPLoopDirective(getCurrentDirective()) && \"Expected loop-based directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 438, __extension__ __PRETTY_FUNCTION__
))
438 "Expected loop-based directive.")(static_cast <bool> (isOpenMPLoopDirective(getCurrentDirective
()) && "Expected loop-based directive.") ? void (0) :
__assert_fail ("isOpenMPLoopDirective(getCurrentDirective()) && \"Expected loop-based directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 438, __extension__ __PRETTY_FUNCTION__
))
;
439 getTopOfStack().LoopStart = true;
440 }
441 /// Start capturing of the variables in the loop context.
442 void loopStart() {
443 assert(isOpenMPLoopDirective(getCurrentDirective()) &&(static_cast <bool> (isOpenMPLoopDirective(getCurrentDirective
()) && "Expected loop-based directive.") ? void (0) :
__assert_fail ("isOpenMPLoopDirective(getCurrentDirective()) && \"Expected loop-based directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 444, __extension__ __PRETTY_FUNCTION__
))
444 "Expected loop-based directive.")(static_cast <bool> (isOpenMPLoopDirective(getCurrentDirective
()) && "Expected loop-based directive.") ? void (0) :
__assert_fail ("isOpenMPLoopDirective(getCurrentDirective()) && \"Expected loop-based directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 444, __extension__ __PRETTY_FUNCTION__
))
;
445 getTopOfStack().LoopStart = false;
446 }
447 /// true, if variables are captured, false otherwise.
448 bool isLoopStarted() const {
449 assert(isOpenMPLoopDirective(getCurrentDirective()) &&(static_cast <bool> (isOpenMPLoopDirective(getCurrentDirective
()) && "Expected loop-based directive.") ? void (0) :
__assert_fail ("isOpenMPLoopDirective(getCurrentDirective()) && \"Expected loop-based directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 450, __extension__ __PRETTY_FUNCTION__
))
450 "Expected loop-based directive.")(static_cast <bool> (isOpenMPLoopDirective(getCurrentDirective
()) && "Expected loop-based directive.") ? void (0) :
__assert_fail ("isOpenMPLoopDirective(getCurrentDirective()) && \"Expected loop-based directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 450, __extension__ __PRETTY_FUNCTION__
))
;
451 return !getTopOfStack().LoopStart;
452 }
453 /// Marks (or clears) declaration as possibly loop counter.
454 void resetPossibleLoopCounter(const Decl *D = nullptr) {
455 getTopOfStack().PossiblyLoopCounter = D ? D->getCanonicalDecl() : D;
456 }
457 /// Gets the possible loop counter decl.
458 const Decl *getPossiblyLoopCunter() const {
459 return getTopOfStack().PossiblyLoopCounter;
460 }
461 /// Start new OpenMP region stack in new non-capturing function.
462 void pushFunction() {
463 assert(!IgnoredStackElements &&(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 464, __extension__ __PRETTY_FUNCTION__
))
464 "cannot change stack while ignoring elements")(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 464, __extension__ __PRETTY_FUNCTION__
))
;
465 const FunctionScopeInfo *CurFnScope = SemaRef.getCurFunction();
466 assert(!isa<CapturingScopeInfo>(CurFnScope))(static_cast <bool> (!isa<CapturingScopeInfo>(CurFnScope
)) ? void (0) : __assert_fail ("!isa<CapturingScopeInfo>(CurFnScope)"
, "clang/lib/Sema/SemaOpenMP.cpp", 466, __extension__ __PRETTY_FUNCTION__
))
;
467 CurrentNonCapturingFunctionScope = CurFnScope;
468 }
469 /// Pop region stack for non-capturing function.
470 void popFunction(const FunctionScopeInfo *OldFSI) {
471 assert(!IgnoredStackElements &&(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 472, __extension__ __PRETTY_FUNCTION__
))
472 "cannot change stack while ignoring elements")(static_cast <bool> (!IgnoredStackElements && "cannot change stack while ignoring elements"
) ? void (0) : __assert_fail ("!IgnoredStackElements && \"cannot change stack while ignoring elements\""
, "clang/lib/Sema/SemaOpenMP.cpp", 472, __extension__ __PRETTY_FUNCTION__
))
;
473 if (!Stack.empty() && Stack.back().second == OldFSI) {
474 assert(Stack.back().first.empty())(static_cast <bool> (Stack.back().first.empty()) ? void
(0) : __assert_fail ("Stack.back().first.empty()", "clang/lib/Sema/SemaOpenMP.cpp"
, 474, __extension__ __PRETTY_FUNCTION__))
;
475 Stack.pop_back();
476 }
477 CurrentNonCapturingFunctionScope = nullptr;
478 for (const FunctionScopeInfo *FSI : llvm::reverse(SemaRef.FunctionScopes)) {
479 if (!isa<CapturingScopeInfo>(FSI)) {
480 CurrentNonCapturingFunctionScope = FSI;
481 break;
482 }
483 }
484 }
485
486 void addCriticalWithHint(const OMPCriticalDirective *D, llvm::APSInt Hint) {
487 Criticals.try_emplace(D->getDirectiveName().getAsString(), D, Hint);
488 }
489 const std::pair<const OMPCriticalDirective *, llvm::APSInt>
490 getCriticalWithHint(const DeclarationNameInfo &Name) const {
491 auto I = Criticals.find(Name.getAsString());
492 if (I != Criticals.end())
493 return I->second;
494 return std::make_pair(nullptr, llvm::APSInt());
495 }
496 /// If 'aligned' declaration for given variable \a D was not seen yet,
497 /// add it and return NULL; otherwise return previous occurrence's expression
498 /// for diagnostics.
499 const Expr *addUniqueAligned(const ValueDecl *D, const Expr *NewDE);
500 /// If 'nontemporal' declaration for given variable \a D was not seen yet,
501 /// add it and return NULL; otherwise return previous occurrence's expression
502 /// for diagnostics.
503 const Expr *addUniqueNontemporal(const ValueDecl *D, const Expr *NewDE);
504
505 /// Register specified variable as loop control variable.
506 void addLoopControlVariable(const ValueDecl *D, VarDecl *Capture);
507 /// Check if the specified variable is a loop control variable for
508 /// current region.
509 /// \return The index of the loop control variable in the list of associated
510 /// for-loops (from outer to inner).
511 const LCDeclInfo isLoopControlVariable(const ValueDecl *D) const;
512 /// Check if the specified variable is a loop control variable for
513 /// parent region.
514 /// \return The index of the loop control variable in the list of associated
515 /// for-loops (from outer to inner).
516 const LCDeclInfo isParentLoopControlVariable(const ValueDecl *D) const;
517 /// Check if the specified variable is a loop control variable for
518 /// current region.
519 /// \return The index of the loop control variable in the list of associated
520 /// for-loops (from outer to inner).
521 const LCDeclInfo isLoopControlVariable(const ValueDecl *D,
522 unsigned Level) const;
523 /// Get the loop control variable for the I-th loop (or nullptr) in
524 /// parent directive.
525 const ValueDecl *getParentLoopControlVariable(unsigned I) const;
526
527 /// Marks the specified decl \p D as used in scan directive.
528 void markDeclAsUsedInScanDirective(ValueDecl *D) {
529 if (SharingMapTy *Stack = getSecondOnStackOrNull())
530 Stack->UsedInScanDirective.insert(D);
531 }
532
533 /// Checks if the specified declaration was used in the inner scan directive.
534 bool isUsedInScanDirective(ValueDecl *D) const {
535 if (const SharingMapTy *Stack = getTopOfStackOrNull())
536 return Stack->UsedInScanDirective.contains(D);
537 return false;
538 }
539
540 /// Adds explicit data sharing attribute to the specified declaration.
541 void addDSA(const ValueDecl *D, const Expr *E, OpenMPClauseKind A,
542 DeclRefExpr *PrivateCopy = nullptr, unsigned Modifier = 0,
543 bool AppliedToPointee = false);
544
545 /// Adds additional information for the reduction items with the reduction id
546 /// represented as an operator.
547 void addTaskgroupReductionData(const ValueDecl *D, SourceRange SR,
548 BinaryOperatorKind BOK);
549 /// Adds additional information for the reduction items with the reduction id
550 /// represented as reduction identifier.
551 void addTaskgroupReductionData(const ValueDecl *D, SourceRange SR,
552 const Expr *ReductionRef);
553 /// Returns the location and reduction operation from the innermost parent
554 /// region for the given \p D.
555 const DSAVarData
556 getTopMostTaskgroupReductionData(const ValueDecl *D, SourceRange &SR,
557 BinaryOperatorKind &BOK,
558 Expr *&TaskgroupDescriptor) const;
559 /// Returns the location and reduction operation from the innermost parent
560 /// region for the given \p D.
561 const DSAVarData
562 getTopMostTaskgroupReductionData(const ValueDecl *D, SourceRange &SR,
563 const Expr *&ReductionRef,
564 Expr *&TaskgroupDescriptor) const;
565 /// Return reduction reference expression for the current taskgroup or
566 /// parallel/worksharing directives with task reductions.
567 Expr *getTaskgroupReductionRef() const {
568 assert((getTopOfStack().Directive == OMPD_taskgroup ||(static_cast <bool> ((getTopOfStack().Directive == OMPD_taskgroup
|| ((isOpenMPParallelDirective(getTopOfStack().Directive) ||
isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&
!isOpenMPSimdDirective(getTopOfStack().Directive))) &&
"taskgroup reference expression requested for non taskgroup or "
"parallel/worksharing directive.") ? void (0) : __assert_fail
("(getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"taskgroup reference expression requested for non taskgroup or \" \"parallel/worksharing directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 573, __extension__ __PRETTY_FUNCTION__
))
569 ((isOpenMPParallelDirective(getTopOfStack().Directive) ||(static_cast <bool> ((getTopOfStack().Directive == OMPD_taskgroup
|| ((isOpenMPParallelDirective(getTopOfStack().Directive) ||
isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&
!isOpenMPSimdDirective(getTopOfStack().Directive))) &&
"taskgroup reference expression requested for non taskgroup or "
"parallel/worksharing directive.") ? void (0) : __assert_fail
("(getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"taskgroup reference expression requested for non taskgroup or \" \"parallel/worksharing directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 573, __extension__ __PRETTY_FUNCTION__
))
570 isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&(static_cast <bool> ((getTopOfStack().Directive == OMPD_taskgroup
|| ((isOpenMPParallelDirective(getTopOfStack().Directive) ||
isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&
!isOpenMPSimdDirective(getTopOfStack().Directive))) &&
"taskgroup reference expression requested for non taskgroup or "
"parallel/worksharing directive.") ? void (0) : __assert_fail
("(getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"taskgroup reference expression requested for non taskgroup or \" \"parallel/worksharing directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 573, __extension__ __PRETTY_FUNCTION__
))
571 !isOpenMPSimdDirective(getTopOfStack().Directive))) &&(static_cast <bool> ((getTopOfStack().Directive == OMPD_taskgroup
|| ((isOpenMPParallelDirective(getTopOfStack().Directive) ||
isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&
!isOpenMPSimdDirective(getTopOfStack().Directive))) &&
"taskgroup reference expression requested for non taskgroup or "
"parallel/worksharing directive.") ? void (0) : __assert_fail
("(getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"taskgroup reference expression requested for non taskgroup or \" \"parallel/worksharing directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 573, __extension__ __PRETTY_FUNCTION__
))
572 "taskgroup reference expression requested for non taskgroup or "(static_cast <bool> ((getTopOfStack().Directive == OMPD_taskgroup
|| ((isOpenMPParallelDirective(getTopOfStack().Directive) ||
isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&
!isOpenMPSimdDirective(getTopOfStack().Directive))) &&
"taskgroup reference expression requested for non taskgroup or "
"parallel/worksharing directive.") ? void (0) : __assert_fail
("(getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"taskgroup reference expression requested for non taskgroup or \" \"parallel/worksharing directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 573, __extension__ __PRETTY_FUNCTION__
))
573 "parallel/worksharing directive.")(static_cast <bool> ((getTopOfStack().Directive == OMPD_taskgroup
|| ((isOpenMPParallelDirective(getTopOfStack().Directive) ||
isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&
!isOpenMPSimdDirective(getTopOfStack().Directive))) &&
"taskgroup reference expression requested for non taskgroup or "
"parallel/worksharing directive.") ? void (0) : __assert_fail
("(getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"taskgroup reference expression requested for non taskgroup or \" \"parallel/worksharing directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 573, __extension__ __PRETTY_FUNCTION__
))
;
574 return getTopOfStack().TaskgroupReductionRef;
575 }
576 /// Checks if the given \p VD declaration is actually a taskgroup reduction
577 /// descriptor variable at the \p Level of OpenMP regions.
578 bool isTaskgroupReductionRef(const ValueDecl *VD, unsigned Level) const {
579 return getStackElemAtLevel(Level).TaskgroupReductionRef &&
580 cast<DeclRefExpr>(getStackElemAtLevel(Level).TaskgroupReductionRef)
581 ->getDecl() == VD;
582 }
583
584 /// Returns data sharing attributes from top of the stack for the
585 /// specified declaration.
586 const DSAVarData getTopDSA(ValueDecl *D, bool FromParent);
587 /// Returns data-sharing attributes for the specified declaration.
588 const DSAVarData getImplicitDSA(ValueDecl *D, bool FromParent) const;
589 /// Returns data-sharing attributes for the specified declaration.
590 const DSAVarData getImplicitDSA(ValueDecl *D, unsigned Level) const;
591 /// Checks if the specified variables has data-sharing attributes which
592 /// match specified \a CPred predicate in any directive which matches \a DPred
593 /// predicate.
594 const DSAVarData
595 hasDSA(ValueDecl *D,
596 const llvm::function_ref<bool(OpenMPClauseKind, bool,
597 DefaultDataSharingAttributes)>
598 CPred,
599 const llvm::function_ref<bool(OpenMPDirectiveKind)> DPred,
600 bool FromParent) const;
601 /// Checks if the specified variables has data-sharing attributes which
602 /// match specified \a CPred predicate in any innermost directive which
603 /// matches \a DPred predicate.
604 const DSAVarData
605 hasInnermostDSA(ValueDecl *D,
606 const llvm::function_ref<bool(OpenMPClauseKind, bool)> CPred,
607 const llvm::function_ref<bool(OpenMPDirectiveKind)> DPred,
608 bool FromParent) const;
609 /// Checks if the specified variables has explicit data-sharing
610 /// attributes which match specified \a CPred predicate at the specified
611 /// OpenMP region.
612 bool
613 hasExplicitDSA(const ValueDecl *D,
614 const llvm::function_ref<bool(OpenMPClauseKind, bool)> CPred,
615 unsigned Level, bool NotLastprivate = false) const;
616
617 /// Returns true if the directive at level \Level matches in the
618 /// specified \a DPred predicate.
619 bool hasExplicitDirective(
620 const llvm::function_ref<bool(OpenMPDirectiveKind)> DPred,
621 unsigned Level) const;
622
623 /// Finds a directive which matches specified \a DPred predicate.
624 bool hasDirective(
625 const llvm::function_ref<bool(
626 OpenMPDirectiveKind, const DeclarationNameInfo &, SourceLocation)>
627 DPred,
628 bool FromParent) const;
629
630 /// Returns currently analyzed directive.
631 OpenMPDirectiveKind getCurrentDirective() const {
632 const SharingMapTy *Top = getTopOfStackOrNull();
633 return Top ? Top->Directive : OMPD_unknown;
634 }
635 /// Returns directive kind at specified level.
636 OpenMPDirectiveKind getDirective(unsigned Level) const {
637 assert(!isStackEmpty() && "No directive at specified level.")(static_cast <bool> (!isStackEmpty() && "No directive at specified level."
) ? void (0) : __assert_fail ("!isStackEmpty() && \"No directive at specified level.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 637, __extension__ __PRETTY_FUNCTION__
))
;
638 return getStackElemAtLevel(Level).Directive;
639 }
640 /// Returns the capture region at the specified level.
641 OpenMPDirectiveKind getCaptureRegion(unsigned Level,
642 unsigned OpenMPCaptureLevel) const {
643 SmallVector<OpenMPDirectiveKind, 4> CaptureRegions;
644 getOpenMPCaptureRegions(CaptureRegions, getDirective(Level));
645 return CaptureRegions[OpenMPCaptureLevel];
646 }
647 /// Returns parent directive.
648 OpenMPDirectiveKind getParentDirective() const {
649 const SharingMapTy *Parent = getSecondOnStackOrNull();
650 return Parent ? Parent->Directive : OMPD_unknown;
651 }
652
653 /// Add requires decl to internal vector
654 void addRequiresDecl(OMPRequiresDecl *RD) { RequiresDecls.push_back(RD); }
655
656 /// Checks if the defined 'requires' directive has specified type of clause.
657 template <typename ClauseType> bool hasRequiresDeclWithClause() const {
658 return llvm::any_of(RequiresDecls, [](const OMPRequiresDecl *D) {
659 return llvm::any_of(D->clauselists(), [](const OMPClause *C) {
660 return isa<ClauseType>(C);
661 });
662 });
663 }
664
665 /// Checks for a duplicate clause amongst previously declared requires
666 /// directives
667 bool hasDuplicateRequiresClause(ArrayRef<OMPClause *> ClauseList) const {
668 bool IsDuplicate = false;
669 for (OMPClause *CNew : ClauseList) {
670 for (const OMPRequiresDecl *D : RequiresDecls) {
671 for (const OMPClause *CPrev : D->clauselists()) {
672 if (CNew->getClauseKind() == CPrev->getClauseKind()) {
673 SemaRef.Diag(CNew->getBeginLoc(),
674 diag::err_omp_requires_clause_redeclaration)
675 << getOpenMPClauseName(CNew->getClauseKind());
676 SemaRef.Diag(CPrev->getBeginLoc(),
677 diag::note_omp_requires_previous_clause)
678 << getOpenMPClauseName(CPrev->getClauseKind());
679 IsDuplicate = true;
680 }
681 }
682 }
683 }
684 return IsDuplicate;
685 }
686
687 /// Add location of previously encountered target to internal vector
688 void addTargetDirLocation(SourceLocation LocStart) {
689 TargetLocations.push_back(LocStart);
690 }
691
692 /// Add location for the first encountered atomicc directive.
693 void addAtomicDirectiveLoc(SourceLocation Loc) {
694 if (AtomicLocation.isInvalid())
695 AtomicLocation = Loc;
696 }
697
698 /// Returns the location of the first encountered atomic directive in the
699 /// module.
700 SourceLocation getAtomicDirectiveLoc() const { return AtomicLocation; }
701
702 // Return previously encountered target region locations.
703 ArrayRef<SourceLocation> getEncounteredTargetLocs() const {
704 return TargetLocations;
705 }
706
707 /// Set default data sharing attribute to none.
708 void setDefaultDSANone(SourceLocation Loc) {
709 getTopOfStack().DefaultAttr = DSA_none;
710 getTopOfStack().DefaultAttrLoc = Loc;
711 }
712 /// Set default data sharing attribute to shared.
713 void setDefaultDSAShared(SourceLocation Loc) {
714 getTopOfStack().DefaultAttr = DSA_shared;
715 getTopOfStack().DefaultAttrLoc = Loc;
716 }
717 /// Set default data sharing attribute to private.
718 void setDefaultDSAPrivate(SourceLocation Loc) {
719 getTopOfStack().DefaultAttr = DSA_private;
720 getTopOfStack().DefaultAttrLoc = Loc;
721 }
722 /// Set default data sharing attribute to firstprivate.
723 void setDefaultDSAFirstPrivate(SourceLocation Loc) {
724 getTopOfStack().DefaultAttr = DSA_firstprivate;
725 getTopOfStack().DefaultAttrLoc = Loc;
726 }
727 /// Set default data mapping attribute to Modifier:Kind
728 void setDefaultDMAAttr(OpenMPDefaultmapClauseModifier M,
729 OpenMPDefaultmapClauseKind Kind, SourceLocation Loc) {
730 DefaultmapInfo &DMI = getTopOfStack().DefaultmapMap[Kind];
731 DMI.ImplicitBehavior = M;
732 DMI.SLoc = Loc;
733 }
734 /// Check whether the implicit-behavior has been set in defaultmap
735 bool checkDefaultmapCategory(OpenMPDefaultmapClauseKind VariableCategory) {
736 if (VariableCategory == OMPC_DEFAULTMAP_unknown)
737 return getTopOfStack()
738 .DefaultmapMap[OMPC_DEFAULTMAP_aggregate]
739 .ImplicitBehavior != OMPC_DEFAULTMAP_MODIFIER_unknown ||
740 getTopOfStack()
741 .DefaultmapMap[OMPC_DEFAULTMAP_scalar]
742 .ImplicitBehavior != OMPC_DEFAULTMAP_MODIFIER_unknown ||
743 getTopOfStack()
744 .DefaultmapMap[OMPC_DEFAULTMAP_pointer]
745 .ImplicitBehavior != OMPC_DEFAULTMAP_MODIFIER_unknown;
746 return getTopOfStack().DefaultmapMap[VariableCategory].ImplicitBehavior !=
747 OMPC_DEFAULTMAP_MODIFIER_unknown;
748 }
749
750 ArrayRef<llvm::omp::TraitProperty> getConstructTraits() {
751 return ConstructTraits;
752 }
753 void handleConstructTrait(ArrayRef<llvm::omp::TraitProperty> Traits,
754 bool ScopeEntry) {
755 if (ScopeEntry)
756 ConstructTraits.append(Traits.begin(), Traits.end());
757 else
758 for (llvm::omp::TraitProperty Trait : llvm::reverse(Traits)) {
759 llvm::omp::TraitProperty Top = ConstructTraits.pop_back_val();
760 assert(Top == Trait && "Something left a trait on the stack!")(static_cast <bool> (Top == Trait && "Something left a trait on the stack!"
) ? void (0) : __assert_fail ("Top == Trait && \"Something left a trait on the stack!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 760, __extension__ __PRETTY_FUNCTION__
))
;
761 (void)Trait;
762 (void)Top;
763 }
764 }
765
766 DefaultDataSharingAttributes getDefaultDSA(unsigned Level) const {
767 return getStackSize() <= Level ? DSA_unspecified
768 : getStackElemAtLevel(Level).DefaultAttr;
769 }
770 DefaultDataSharingAttributes getDefaultDSA() const {
771 return isStackEmpty() ? DSA_unspecified : getTopOfStack().DefaultAttr;
772 }
773 SourceLocation getDefaultDSALocation() const {
774 return isStackEmpty() ? SourceLocation() : getTopOfStack().DefaultAttrLoc;
775 }
776 OpenMPDefaultmapClauseModifier
777 getDefaultmapModifier(OpenMPDefaultmapClauseKind Kind) const {
778 return isStackEmpty()
779 ? OMPC_DEFAULTMAP_MODIFIER_unknown
780 : getTopOfStack().DefaultmapMap[Kind].ImplicitBehavior;
781 }
782 OpenMPDefaultmapClauseModifier
783 getDefaultmapModifierAtLevel(unsigned Level,
784 OpenMPDefaultmapClauseKind Kind) const {
785 return getStackElemAtLevel(Level).DefaultmapMap[Kind].ImplicitBehavior;
786 }
787 bool isDefaultmapCapturedByRef(unsigned Level,
788 OpenMPDefaultmapClauseKind Kind) const {
789 OpenMPDefaultmapClauseModifier M =
790 getDefaultmapModifierAtLevel(Level, Kind);
791 if (Kind == OMPC_DEFAULTMAP_scalar || Kind == OMPC_DEFAULTMAP_pointer) {
792 return (M == OMPC_DEFAULTMAP_MODIFIER_alloc) ||
793 (M == OMPC_DEFAULTMAP_MODIFIER_to) ||
794 (M == OMPC_DEFAULTMAP_MODIFIER_from) ||
795 (M == OMPC_DEFAULTMAP_MODIFIER_tofrom);
796 }
797 return true;
798 }
799 static bool mustBeFirstprivateBase(OpenMPDefaultmapClauseModifier M,
800 OpenMPDefaultmapClauseKind Kind) {
801 switch (Kind) {
802 case OMPC_DEFAULTMAP_scalar:
803 case OMPC_DEFAULTMAP_pointer:
804 return (M == OMPC_DEFAULTMAP_MODIFIER_unknown) ||
805 (M == OMPC_DEFAULTMAP_MODIFIER_firstprivate) ||
806 (M == OMPC_DEFAULTMAP_MODIFIER_default);
807 case OMPC_DEFAULTMAP_aggregate:
808 return M == OMPC_DEFAULTMAP_MODIFIER_firstprivate;
809 default:
810 break;
811 }
812 llvm_unreachable("Unexpected OpenMPDefaultmapClauseKind enum")::llvm::llvm_unreachable_internal("Unexpected OpenMPDefaultmapClauseKind enum"
, "clang/lib/Sema/SemaOpenMP.cpp", 812)
;
813 }
814 bool mustBeFirstprivateAtLevel(unsigned Level,
815 OpenMPDefaultmapClauseKind Kind) const {
816 OpenMPDefaultmapClauseModifier M =
817 getDefaultmapModifierAtLevel(Level, Kind);
818 return mustBeFirstprivateBase(M, Kind);
819 }
820 bool mustBeFirstprivate(OpenMPDefaultmapClauseKind Kind) const {
821 OpenMPDefaultmapClauseModifier M = getDefaultmapModifier(Kind);
822 return mustBeFirstprivateBase(M, Kind);
823 }
824
825 /// Checks if the specified variable is a threadprivate.
826 bool isThreadPrivate(VarDecl *D) {
827 const DSAVarData DVar = getTopDSA(D, false);
828 return isOpenMPThreadPrivate(DVar.CKind);
829 }
830
831 /// Marks current region as ordered (it has an 'ordered' clause).
832 void setOrderedRegion(bool IsOrdered, const Expr *Param,
833 OMPOrderedClause *Clause) {
834 if (IsOrdered)
835 getTopOfStack().OrderedRegion.emplace(Param, Clause);
836 else
837 getTopOfStack().OrderedRegion.reset();
838 }
839 /// Returns true, if region is ordered (has associated 'ordered' clause),
840 /// false - otherwise.
841 bool isOrderedRegion() const {
842 if (const SharingMapTy *Top = getTopOfStackOrNull())
843 return Top->OrderedRegion.has_value();
844 return false;
845 }
846 /// Returns optional parameter for the ordered region.
847 std::pair<const Expr *, OMPOrderedClause *> getOrderedRegionParam() const {
848 if (const SharingMapTy *Top = getTopOfStackOrNull())
849 if (Top->OrderedRegion)
850 return Top->OrderedRegion.value();
851 return std::make_pair(nullptr, nullptr);
852 }
853 /// Returns true, if parent region is ordered (has associated
854 /// 'ordered' clause), false - otherwise.
855 bool isParentOrderedRegion() const {
856 if (const SharingMapTy *Parent = getSecondOnStackOrNull())
857 return Parent->OrderedRegion.has_value();
858 return false;
859 }
860 /// Returns optional parameter for the ordered region.
861 std::pair<const Expr *, OMPOrderedClause *>
862 getParentOrderedRegionParam() const {
863 if (const SharingMapTy *Parent = getSecondOnStackOrNull())
864 if (Parent->OrderedRegion)
865 return Parent->OrderedRegion.value();
866 return std::make_pair(nullptr, nullptr);
867 }
868 /// Marks current region as nowait (it has a 'nowait' clause).
869 void setNowaitRegion(bool IsNowait = true) {
870 getTopOfStack().NowaitRegion = IsNowait;
871 }
872 /// Returns true, if parent region is nowait (has associated
873 /// 'nowait' clause), false - otherwise.
874 bool isParentNowaitRegion() const {
875 if (const SharingMapTy *Parent = getSecondOnStackOrNull())
876 return Parent->NowaitRegion;
877 return false;
878 }
879 /// Marks current region as untied (it has a 'untied' clause).
880 void setUntiedRegion(bool IsUntied = true) {
881 getTopOfStack().UntiedRegion = IsUntied;
882 }
883 /// Return true if current region is untied.
884 bool isUntiedRegion() const {
885 const SharingMapTy *Top = getTopOfStackOrNull();
886 return Top ? Top->UntiedRegion : false;
887 }
888 /// Marks parent region as cancel region.
889 void setParentCancelRegion(bool Cancel = true) {
890 if (SharingMapTy *Parent = getSecondOnStackOrNull())
891 Parent->CancelRegion |= Cancel;
892 }
893 /// Return true if current region has inner cancel construct.
894 bool isCancelRegion() const {
895 const SharingMapTy *Top = getTopOfStackOrNull();
896 return Top ? Top->CancelRegion : false;
897 }
898
899 /// Mark that parent region already has scan directive.
900 void setParentHasScanDirective(SourceLocation Loc) {
901 if (SharingMapTy *Parent = getSecondOnStackOrNull())
902 Parent->PrevScanLocation = Loc;
903 }
904 /// Return true if current region has inner cancel construct.
905 bool doesParentHasScanDirective() const {
906 const SharingMapTy *Top = getSecondOnStackOrNull();
907 return Top ? Top->PrevScanLocation.isValid() : false;
908 }
909 /// Return true if current region has inner cancel construct.
910 SourceLocation getParentScanDirectiveLoc() const {
911 const SharingMapTy *Top = getSecondOnStackOrNull();
912 return Top ? Top->PrevScanLocation : SourceLocation();
913 }
914 /// Mark that parent region already has ordered directive.
915 void setParentHasOrderedDirective(SourceLocation Loc) {
916 if (SharingMapTy *Parent = getSecondOnStackOrNull())
917 Parent->PrevOrderedLocation = Loc;
918 }
919 /// Return true if current region has inner ordered construct.
920 bool doesParentHasOrderedDirective() const {
921 const SharingMapTy *Top = getSecondOnStackOrNull();
922 return Top ? Top->PrevOrderedLocation.isValid() : false;
923 }
924 /// Returns the location of the previously specified ordered directive.
925 SourceLocation getParentOrderedDirectiveLoc() const {
926 const SharingMapTy *Top = getSecondOnStackOrNull();
927 return Top ? Top->PrevOrderedLocation : SourceLocation();
928 }
929
930 /// Set collapse value for the region.
931 void setAssociatedLoops(unsigned Val) {
932 getTopOfStack().AssociatedLoops = Val;
933 if (Val > 1)
934 getTopOfStack().HasMutipleLoops = true;
935 }
936 /// Return collapse value for region.
937 unsigned getAssociatedLoops() const {
938 const SharingMapTy *Top = getTopOfStackOrNull();
939 return Top ? Top->AssociatedLoops : 0;
940 }
941 /// Returns true if the construct is associated with multiple loops.
942 bool hasMutipleLoops() const {
943 const SharingMapTy *Top = getTopOfStackOrNull();
944 return Top ? Top->HasMutipleLoops : false;
945 }
946
947 /// Marks current target region as one with closely nested teams
948 /// region.
949 void setParentTeamsRegionLoc(SourceLocation TeamsRegionLoc) {
950 if (SharingMapTy *Parent = getSecondOnStackOrNull())
951 Parent->InnerTeamsRegionLoc = TeamsRegionLoc;
952 }
953 /// Returns true, if current region has closely nested teams region.
954 bool hasInnerTeamsRegion() const {
955 return getInnerTeamsRegionLoc().isValid();
956 }
957 /// Returns location of the nested teams region (if any).
958 SourceLocation getInnerTeamsRegionLoc() const {
959 const SharingMapTy *Top = getTopOfStackOrNull();
960 return Top ? Top->InnerTeamsRegionLoc : SourceLocation();
961 }
962
963 Scope *getCurScope() const {
964 const SharingMapTy *Top = getTopOfStackOrNull();
965 return Top ? Top->CurScope : nullptr;
966 }
967 void setContext(DeclContext *DC) { getTopOfStack().Context = DC; }
968 SourceLocation getConstructLoc() const {
969 const SharingMapTy *Top = getTopOfStackOrNull();
970 return Top ? Top->ConstructLoc : SourceLocation();
971 }
972
973 /// Do the check specified in \a Check to all component lists and return true
974 /// if any issue is found.
975 bool checkMappableExprComponentListsForDecl(
976 const ValueDecl *VD, bool CurrentRegionOnly,
977 const llvm::function_ref<
978 bool(OMPClauseMappableExprCommon::MappableExprComponentListRef,
979 OpenMPClauseKind)>
980 Check) const {
981 if (isStackEmpty())
982 return false;
983 auto SI = begin();
984 auto SE = end();
985
986 if (SI == SE)
987 return false;
988
989 if (CurrentRegionOnly)
990 SE = std::next(SI);
991 else
992 std::advance(SI, 1);
993
994 for (; SI != SE; ++SI) {
995 auto MI = SI->MappedExprComponents.find(VD);
996 if (MI != SI->MappedExprComponents.end())
997 for (OMPClauseMappableExprCommon::MappableExprComponentListRef L :
998 MI->second.Components)
999 if (Check(L, MI->second.Kind))
1000 return true;
1001 }
1002 return false;
1003 }
1004
1005 /// Do the check specified in \a Check to all component lists at a given level
1006 /// and return true if any issue is found.
1007 bool checkMappableExprComponentListsForDeclAtLevel(
1008 const ValueDecl *VD, unsigned Level,
1009 const llvm::function_ref<
1010 bool(OMPClauseMappableExprCommon::MappableExprComponentListRef,
1011 OpenMPClauseKind)>
1012 Check) const {
1013 if (getStackSize() <= Level)
1014 return false;
1015
1016 const SharingMapTy &StackElem = getStackElemAtLevel(Level);
1017 auto MI = StackElem.MappedExprComponents.find(VD);
1018 if (MI != StackElem.MappedExprComponents.end())
1019 for (OMPClauseMappableExprCommon::MappableExprComponentListRef L :
1020 MI->second.Components)
1021 if (Check(L, MI->second.Kind))
1022 return true;
1023 return false;
1024 }
1025
1026 /// Create a new mappable expression component list associated with a given
1027 /// declaration and initialize it with the provided list of components.
1028 void addMappableExpressionComponents(
1029 const ValueDecl *VD,
1030 OMPClauseMappableExprCommon::MappableExprComponentListRef Components,
1031 OpenMPClauseKind WhereFoundClauseKind) {
1032 MappedExprComponentTy &MEC = getTopOfStack().MappedExprComponents[VD];
1033 // Create new entry and append the new components there.
1034 MEC.Components.resize(MEC.Components.size() + 1);
1035 MEC.Components.back().append(Components.begin(), Components.end());
1036 MEC.Kind = WhereFoundClauseKind;
1037 }
1038
1039 unsigned getNestingLevel() const {
1040 assert(!isStackEmpty())(static_cast <bool> (!isStackEmpty()) ? void (0) : __assert_fail
("!isStackEmpty()", "clang/lib/Sema/SemaOpenMP.cpp", 1040, __extension__
__PRETTY_FUNCTION__))
;
1041 return getStackSize() - 1;
1042 }
1043 void addDoacrossDependClause(OMPDependClause *C,
1044 const OperatorOffsetTy &OpsOffs) {
1045 SharingMapTy *Parent = getSecondOnStackOrNull();
1046 assert(Parent && isOpenMPWorksharingDirective(Parent->Directive))(static_cast <bool> (Parent && isOpenMPWorksharingDirective
(Parent->Directive)) ? void (0) : __assert_fail ("Parent && isOpenMPWorksharingDirective(Parent->Directive)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1046, __extension__ __PRETTY_FUNCTION__
))
;
1047 Parent->DoacrossDepends.try_emplace(C, OpsOffs);
1048 }
1049 llvm::iterator_range<DoacrossDependMapTy::const_iterator>
1050 getDoacrossDependClauses() const {
1051 const SharingMapTy &StackElem = getTopOfStack();
1052 if (isOpenMPWorksharingDirective(StackElem.Directive)) {
1053 const DoacrossDependMapTy &Ref = StackElem.DoacrossDepends;
1054 return llvm::make_range(Ref.begin(), Ref.end());
1055 }
1056 return llvm::make_range(StackElem.DoacrossDepends.end(),
1057 StackElem.DoacrossDepends.end());
1058 }
1059
1060 // Store types of classes which have been explicitly mapped
1061 void addMappedClassesQualTypes(QualType QT) {
1062 SharingMapTy &StackElem = getTopOfStack();
1063 StackElem.MappedClassesQualTypes.insert(QT);
1064 }
1065
1066 // Return set of mapped classes types
1067 bool isClassPreviouslyMapped(QualType QT) const {
1068 const SharingMapTy &StackElem = getTopOfStack();
1069 return StackElem.MappedClassesQualTypes.contains(QT);
1070 }
1071
1072 /// Adds global declare target to the parent target region.
1073 void addToParentTargetRegionLinkGlobals(DeclRefExpr *E) {
1074 assert(*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration((static_cast <bool> (*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration
( E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link &&
"Expected declare target link global.") ? void (0) : __assert_fail
("*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration( E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link && \"Expected declare target link global.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1076, __extension__ __PRETTY_FUNCTION__
))
1075 E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link &&(static_cast <bool> (*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration
( E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link &&
"Expected declare target link global.") ? void (0) : __assert_fail
("*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration( E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link && \"Expected declare target link global.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1076, __extension__ __PRETTY_FUNCTION__
))
1076 "Expected declare target link global.")(static_cast <bool> (*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration
( E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link &&
"Expected declare target link global.") ? void (0) : __assert_fail
("*OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration( E->getDecl()) == OMPDeclareTargetDeclAttr::MT_Link && \"Expected declare target link global.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1076, __extension__ __PRETTY_FUNCTION__
))
;
1077 for (auto &Elem : *this) {
1078 if (isOpenMPTargetExecutionDirective(Elem.Directive)) {
1079 Elem.DeclareTargetLinkVarDecls.push_back(E);
1080 return;
1081 }
1082 }
1083 }
1084
1085 /// Returns the list of globals with declare target link if current directive
1086 /// is target.
1087 ArrayRef<DeclRefExpr *> getLinkGlobals() const {
1088 assert(isOpenMPTargetExecutionDirective(getCurrentDirective()) &&(static_cast <bool> (isOpenMPTargetExecutionDirective(getCurrentDirective
()) && "Expected target executable directive.") ? void
(0) : __assert_fail ("isOpenMPTargetExecutionDirective(getCurrentDirective()) && \"Expected target executable directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1089, __extension__ __PRETTY_FUNCTION__
))
1089 "Expected target executable directive.")(static_cast <bool> (isOpenMPTargetExecutionDirective(getCurrentDirective
()) && "Expected target executable directive.") ? void
(0) : __assert_fail ("isOpenMPTargetExecutionDirective(getCurrentDirective()) && \"Expected target executable directive.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1089, __extension__ __PRETTY_FUNCTION__
))
;
1090 return getTopOfStack().DeclareTargetLinkVarDecls;
1091 }
1092
1093 /// Adds list of allocators expressions.
1094 void addInnerAllocatorExpr(Expr *E) {
1095 getTopOfStack().InnerUsedAllocators.push_back(E);
1096 }
1097 /// Return list of used allocators.
1098 ArrayRef<Expr *> getInnerAllocators() const {
1099 return getTopOfStack().InnerUsedAllocators;
1100 }
1101 /// Marks the declaration as implicitly firstprivate nin the task-based
1102 /// regions.
1103 void addImplicitTaskFirstprivate(unsigned Level, Decl *D) {
1104 getStackElemAtLevel(Level).ImplicitTaskFirstprivates.insert(D);
1105 }
1106 /// Checks if the decl is implicitly firstprivate in the task-based region.
1107 bool isImplicitTaskFirstprivate(Decl *D) const {
1108 return getTopOfStack().ImplicitTaskFirstprivates.contains(D);
1109 }
1110
1111 /// Marks decl as used in uses_allocators clause as the allocator.
1112 void addUsesAllocatorsDecl(const Decl *D, UsesAllocatorsDeclKind Kind) {
1113 getTopOfStack().UsesAllocatorsDecls.try_emplace(D, Kind);
1114 }
1115 /// Checks if specified decl is used in uses allocator clause as the
1116 /// allocator.
1117 Optional<UsesAllocatorsDeclKind> isUsesAllocatorsDecl(unsigned Level,
1118 const Decl *D) const {
1119 const SharingMapTy &StackElem = getTopOfStack();
1120 auto I = StackElem.UsesAllocatorsDecls.find(D);
1121 if (I == StackElem.UsesAllocatorsDecls.end())
1122 return None;
1123 return I->getSecond();
1124 }
1125 Optional<UsesAllocatorsDeclKind> isUsesAllocatorsDecl(const Decl *D) const {
1126 const SharingMapTy &StackElem = getTopOfStack();
1127 auto I = StackElem.UsesAllocatorsDecls.find(D);
1128 if (I == StackElem.UsesAllocatorsDecls.end())
1129 return None;
1130 return I->getSecond();
1131 }
1132
1133 void addDeclareMapperVarRef(Expr *Ref) {
1134 SharingMapTy &StackElem = getTopOfStack();
1135 StackElem.DeclareMapperVar = Ref;
1136 }
1137 const Expr *getDeclareMapperVarRef() const {
1138 const SharingMapTy *Top = getTopOfStackOrNull();
1139 return Top ? Top->DeclareMapperVar : nullptr;
1140 }
1141 /// get captured field from ImplicitDefaultFirstprivateFDs
1142 VarDecl *getImplicitFDCapExprDecl(const FieldDecl *FD) const {
1143 const_iterator I = begin();
1144 const_iterator EndI = end();
1145 size_t StackLevel = getStackSize();
1146 for (; I != EndI; ++I) {
1147 if (I->DefaultAttr == DSA_firstprivate || I->DefaultAttr == DSA_private)
1148 break;
1149 StackLevel--;
1150 }
1151 assert((StackLevel > 0 && I != EndI) || (StackLevel == 0 && I == EndI))(static_cast <bool> ((StackLevel > 0 && I !=
EndI) || (StackLevel == 0 && I == EndI)) ? void (0) :
__assert_fail ("(StackLevel > 0 && I != EndI) || (StackLevel == 0 && I == EndI)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1151, __extension__ __PRETTY_FUNCTION__
))
;
1152 if (I == EndI)
1153 return nullptr;
1154 for (const auto &IFD : I->ImplicitDefaultFirstprivateFDs)
1155 if (IFD.FD == FD && IFD.StackLevel == StackLevel)
1156 return IFD.VD;
1157 return nullptr;
1158 }
1159 /// Check if capture decl is field captured in ImplicitDefaultFirstprivateFDs
1160 bool isImplicitDefaultFirstprivateFD(VarDecl *VD) const {
1161 const_iterator I = begin();
1162 const_iterator EndI = end();
1163 for (; I != EndI; ++I)
1164 if (I->DefaultAttr == DSA_firstprivate || I->DefaultAttr == DSA_private)
1165 break;
1166 if (I == EndI)
1167 return false;
1168 for (const auto &IFD : I->ImplicitDefaultFirstprivateFDs)
1169 if (IFD.VD == VD)
1170 return true;
1171 return false;
1172 }
1173 /// Store capture FD info in ImplicitDefaultFirstprivateFDs
1174 void addImplicitDefaultFirstprivateFD(const FieldDecl *FD, VarDecl *VD) {
1175 iterator I = begin();
1176 const_iterator EndI = end();
1177 size_t StackLevel = getStackSize();
1178 for (; I != EndI; ++I) {
1179 if (I->DefaultAttr == DSA_private || I->DefaultAttr == DSA_firstprivate) {
1180 I->ImplicitDefaultFirstprivateFDs.emplace_back(FD, StackLevel, VD);
1181 break;
1182 }
1183 StackLevel--;
1184 }
1185 assert((StackLevel > 0 && I != EndI) || (StackLevel == 0 && I == EndI))(static_cast <bool> ((StackLevel > 0 && I !=
EndI) || (StackLevel == 0 && I == EndI)) ? void (0) :
__assert_fail ("(StackLevel > 0 && I != EndI) || (StackLevel == 0 && I == EndI)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1185, __extension__ __PRETTY_FUNCTION__
))
;
1186 }
1187};
1188
1189bool isImplicitTaskingRegion(OpenMPDirectiveKind DKind) {
1190 return isOpenMPParallelDirective(DKind) || isOpenMPTeamsDirective(DKind);
1191}
1192
1193bool isImplicitOrExplicitTaskingRegion(OpenMPDirectiveKind DKind) {
1194 return isImplicitTaskingRegion(DKind) || isOpenMPTaskingDirective(DKind) ||
1195 DKind == OMPD_unknown;
1196}
1197
1198} // namespace
1199
1200static const Expr *getExprAsWritten(const Expr *E) {
1201 if (const auto *FE = dyn_cast<FullExpr>(E))
1202 E = FE->getSubExpr();
1203
1204 if (const auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E))
1205 E = MTE->getSubExpr();
1206
1207 while (const auto *Binder = dyn_cast<CXXBindTemporaryExpr>(E))
1208 E = Binder->getSubExpr();
1209
1210 if (const auto *ICE = dyn_cast<ImplicitCastExpr>(E))
1211 E = ICE->getSubExprAsWritten();
1212 return E->IgnoreParens();
1213}
1214
1215static Expr *getExprAsWritten(Expr *E) {
1216 return const_cast<Expr *>(getExprAsWritten(const_cast<const Expr *>(E)));
1217}
1218
1219static const ValueDecl *getCanonicalDecl(const ValueDecl *D) {
1220 if (const auto *CED = dyn_cast<OMPCapturedExprDecl>(D))
1221 if (const auto *ME = dyn_cast<MemberExpr>(getExprAsWritten(CED->getInit())))
1222 D = ME->getMemberDecl();
1223 const auto *VD = dyn_cast<VarDecl>(D);
1224 const auto *FD = dyn_cast<FieldDecl>(D);
1225 if (VD != nullptr) {
1226 VD = VD->getCanonicalDecl();
1227 D = VD;
1228 } else {
1229 assert(FD)(static_cast <bool> (FD) ? void (0) : __assert_fail ("FD"
, "clang/lib/Sema/SemaOpenMP.cpp", 1229, __extension__ __PRETTY_FUNCTION__
))
;
1230 FD = FD->getCanonicalDecl();
1231 D = FD;
1232 }
1233 return D;
1234}
1235
1236static ValueDecl *getCanonicalDecl(ValueDecl *D) {
1237 return const_cast<ValueDecl *>(
1238 getCanonicalDecl(const_cast<const ValueDecl *>(D)));
1239}
1240
1241DSAStackTy::DSAVarData DSAStackTy::getDSA(const_iterator &Iter,
1242 ValueDecl *D) const {
1243 D = getCanonicalDecl(D);
1244 auto *VD = dyn_cast<VarDecl>(D);
1245 const auto *FD = dyn_cast<FieldDecl>(D);
1246 DSAVarData DVar;
1247 if (Iter == end()) {
1248 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1249 // in a region but not in construct]
1250 // File-scope or namespace-scope variables referenced in called routines
1251 // in the region are shared unless they appear in a threadprivate
1252 // directive.
1253 if (VD && !VD->isFunctionOrMethodVarDecl() && !isa<ParmVarDecl>(VD))
1254 DVar.CKind = OMPC_shared;
1255
1256 // OpenMP [2.9.1.2, Data-sharing Attribute Rules for Variables Referenced
1257 // in a region but not in construct]
1258 // Variables with static storage duration that are declared in called
1259 // routines in the region are shared.
1260 if (VD && VD->hasGlobalStorage())
1261 DVar.CKind = OMPC_shared;
1262
1263 // Non-static data members are shared by default.
1264 if (FD)
1265 DVar.CKind = OMPC_shared;
1266
1267 return DVar;
1268 }
1269
1270 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1271 // in a Construct, C/C++, predetermined, p.1]
1272 // Variables with automatic storage duration that are declared in a scope
1273 // inside the construct are private.
1274 if (VD && isOpenMPLocal(VD, Iter) && VD->isLocalVarDecl() &&
1275 (VD->getStorageClass() == SC_Auto || VD->getStorageClass() == SC_None)) {
1276 DVar.CKind = OMPC_private;
1277 return DVar;
1278 }
1279
1280 DVar.DKind = Iter->Directive;
1281 // Explicitly specified attributes and local variables with predetermined
1282 // attributes.
1283 if (Iter->SharingMap.count(D)) {
1284 const DSAInfo &Data = Iter->SharingMap.lookup(D);
1285 DVar.RefExpr = Data.RefExpr.getPointer();
1286 DVar.PrivateCopy = Data.PrivateCopy;
1287 DVar.CKind = Data.Attributes;
1288 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
1289 DVar.Modifier = Data.Modifier;
1290 DVar.AppliedToPointee = Data.AppliedToPointee;
1291 return DVar;
1292 }
1293
1294 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1295 // in a Construct, C/C++, implicitly determined, p.1]
1296 // In a parallel or task construct, the data-sharing attributes of these
1297 // variables are determined by the default clause, if present.
1298 switch (Iter->DefaultAttr) {
1299 case DSA_shared:
1300 DVar.CKind = OMPC_shared;
1301 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
1302 return DVar;
1303 case DSA_none:
1304 return DVar;
1305 case DSA_firstprivate:
1306 if (VD && VD->getStorageDuration() == SD_Static &&
1307 VD->getDeclContext()->isFileContext()) {
1308 DVar.CKind = OMPC_unknown;
1309 } else {
1310 DVar.CKind = OMPC_firstprivate;
1311 }
1312 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
1313 return DVar;
1314 case DSA_private:
1315 // each variable with static storage duration that is declared
1316 // in a namespace or global scope and referenced in the construct,
1317 // and that does not have a predetermined data-sharing attribute
1318 if (VD && VD->getStorageDuration() == SD_Static &&
1319 VD->getDeclContext()->isFileContext()) {
1320 DVar.CKind = OMPC_unknown;
1321 } else {
1322 DVar.CKind = OMPC_private;
1323 }
1324 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
1325 return DVar;
1326 case DSA_unspecified:
1327 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1328 // in a Construct, implicitly determined, p.2]
1329 // In a parallel construct, if no default clause is present, these
1330 // variables are shared.
1331 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
1332 if ((isOpenMPParallelDirective(DVar.DKind) &&
1333 !isOpenMPTaskLoopDirective(DVar.DKind)) ||
1334 isOpenMPTeamsDirective(DVar.DKind)) {
1335 DVar.CKind = OMPC_shared;
1336 return DVar;
1337 }
1338
1339 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1340 // in a Construct, implicitly determined, p.4]
1341 // In a task construct, if no default clause is present, a variable that in
1342 // the enclosing context is determined to be shared by all implicit tasks
1343 // bound to the current team is shared.
1344 if (isOpenMPTaskingDirective(DVar.DKind)) {
1345 DSAVarData DVarTemp;
1346 const_iterator I = Iter, E = end();
1347 do {
1348 ++I;
1349 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables
1350 // Referenced in a Construct, implicitly determined, p.6]
1351 // In a task construct, if no default clause is present, a variable
1352 // whose data-sharing attribute is not determined by the rules above is
1353 // firstprivate.
1354 DVarTemp = getDSA(I, D);
1355 if (DVarTemp.CKind != OMPC_shared) {
1356 DVar.RefExpr = nullptr;
1357 DVar.CKind = OMPC_firstprivate;
1358 return DVar;
1359 }
1360 } while (I != E && !isImplicitTaskingRegion(I->Directive));
1361 DVar.CKind =
1362 (DVarTemp.CKind == OMPC_unknown) ? OMPC_firstprivate : OMPC_shared;
1363 return DVar;
1364 }
1365 }
1366 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1367 // in a Construct, implicitly determined, p.3]
1368 // For constructs other than task, if no default clause is present, these
1369 // variables inherit their data-sharing attributes from the enclosing
1370 // context.
1371 return getDSA(++Iter, D);
1372}
1373
1374const Expr *DSAStackTy::addUniqueAligned(const ValueDecl *D,
1375 const Expr *NewDE) {
1376 assert(!isStackEmpty() && "Data sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1376, __extension__ __PRETTY_FUNCTION__
))
;
1377 D = getCanonicalDecl(D);
1378 SharingMapTy &StackElem = getTopOfStack();
1379 auto It = StackElem.AlignedMap.find(D);
1380 if (It == StackElem.AlignedMap.end()) {
1381 assert(NewDE && "Unexpected nullptr expr to be added into aligned map")(static_cast <bool> (NewDE && "Unexpected nullptr expr to be added into aligned map"
) ? void (0) : __assert_fail ("NewDE && \"Unexpected nullptr expr to be added into aligned map\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1381, __extension__ __PRETTY_FUNCTION__
))
;
1382 StackElem.AlignedMap[D] = NewDE;
1383 return nullptr;
1384 }
1385 assert(It->second && "Unexpected nullptr expr in the aligned map")(static_cast <bool> (It->second && "Unexpected nullptr expr in the aligned map"
) ? void (0) : __assert_fail ("It->second && \"Unexpected nullptr expr in the aligned map\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1385, __extension__ __PRETTY_FUNCTION__
))
;
1386 return It->second;
1387}
1388
1389const Expr *DSAStackTy::addUniqueNontemporal(const ValueDecl *D,
1390 const Expr *NewDE) {
1391 assert(!isStackEmpty() && "Data sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1391, __extension__ __PRETTY_FUNCTION__
))
;
1392 D = getCanonicalDecl(D);
1393 SharingMapTy &StackElem = getTopOfStack();
1394 auto It = StackElem.NontemporalMap.find(D);
1395 if (It == StackElem.NontemporalMap.end()) {
1396 assert(NewDE && "Unexpected nullptr expr to be added into aligned map")(static_cast <bool> (NewDE && "Unexpected nullptr expr to be added into aligned map"
) ? void (0) : __assert_fail ("NewDE && \"Unexpected nullptr expr to be added into aligned map\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1396, __extension__ __PRETTY_FUNCTION__
))
;
1397 StackElem.NontemporalMap[D] = NewDE;
1398 return nullptr;
1399 }
1400 assert(It->second && "Unexpected nullptr expr in the aligned map")(static_cast <bool> (It->second && "Unexpected nullptr expr in the aligned map"
) ? void (0) : __assert_fail ("It->second && \"Unexpected nullptr expr in the aligned map\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1400, __extension__ __PRETTY_FUNCTION__
))
;
1401 return It->second;
1402}
1403
1404void DSAStackTy::addLoopControlVariable(const ValueDecl *D, VarDecl *Capture) {
1405 assert(!isStackEmpty() && "Data-sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1405, __extension__ __PRETTY_FUNCTION__
))
;
1406 D = getCanonicalDecl(D);
1407 SharingMapTy &StackElem = getTopOfStack();
1408 StackElem.LCVMap.try_emplace(
1409 D, LCDeclInfo(StackElem.LCVMap.size() + 1, Capture));
1410}
1411
1412const DSAStackTy::LCDeclInfo
1413DSAStackTy::isLoopControlVariable(const ValueDecl *D) const {
1414 assert(!isStackEmpty() && "Data-sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1414, __extension__ __PRETTY_FUNCTION__
))
;
1415 D = getCanonicalDecl(D);
1416 const SharingMapTy &StackElem = getTopOfStack();
1417 auto It = StackElem.LCVMap.find(D);
1418 if (It != StackElem.LCVMap.end())
1419 return It->second;
1420 return {0, nullptr};
1421}
1422
1423const DSAStackTy::LCDeclInfo
1424DSAStackTy::isLoopControlVariable(const ValueDecl *D, unsigned Level) const {
1425 assert(!isStackEmpty() && "Data-sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1425, __extension__ __PRETTY_FUNCTION__
))
;
1426 D = getCanonicalDecl(D);
1427 for (unsigned I = Level + 1; I > 0; --I) {
1428 const SharingMapTy &StackElem = getStackElemAtLevel(I - 1);
1429 auto It = StackElem.LCVMap.find(D);
1430 if (It != StackElem.LCVMap.end())
1431 return It->second;
1432 }
1433 return {0, nullptr};
1434}
1435
1436const DSAStackTy::LCDeclInfo
1437DSAStackTy::isParentLoopControlVariable(const ValueDecl *D) const {
1438 const SharingMapTy *Parent = getSecondOnStackOrNull();
1439 assert(Parent && "Data-sharing attributes stack is empty")(static_cast <bool> (Parent && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("Parent && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1439, __extension__ __PRETTY_FUNCTION__
))
;
1440 D = getCanonicalDecl(D);
1441 auto It = Parent->LCVMap.find(D);
1442 if (It != Parent->LCVMap.end())
1443 return It->second;
1444 return {0, nullptr};
1445}
1446
1447const ValueDecl *DSAStackTy::getParentLoopControlVariable(unsigned I) const {
1448 const SharingMapTy *Parent = getSecondOnStackOrNull();
1449 assert(Parent && "Data-sharing attributes stack is empty")(static_cast <bool> (Parent && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("Parent && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1449, __extension__ __PRETTY_FUNCTION__
))
;
1450 if (Parent->LCVMap.size() < I)
1451 return nullptr;
1452 for (const auto &Pair : Parent->LCVMap)
1453 if (Pair.second.first == I)
1454 return Pair.first;
1455 return nullptr;
1456}
1457
1458void DSAStackTy::addDSA(const ValueDecl *D, const Expr *E, OpenMPClauseKind A,
1459 DeclRefExpr *PrivateCopy, unsigned Modifier,
1460 bool AppliedToPointee) {
1461 D = getCanonicalDecl(D);
1462 if (A == OMPC_threadprivate) {
1463 DSAInfo &Data = Threadprivates[D];
1464 Data.Attributes = A;
1465 Data.RefExpr.setPointer(E);
1466 Data.PrivateCopy = nullptr;
1467 Data.Modifier = Modifier;
1468 } else {
1469 DSAInfo &Data = getTopOfStack().SharingMap[D];
1470 assert(Data.Attributes == OMPC_unknown || (A == Data.Attributes) ||(static_cast <bool> (Data.Attributes == OMPC_unknown ||
(A == Data.Attributes) || (A == OMPC_firstprivate &&
Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate
&& Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable
(D).first && A == OMPC_private)) ? void (0) : __assert_fail
("Data.Attributes == OMPC_unknown || (A == Data.Attributes) || (A == OMPC_firstprivate && Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable(D).first && A == OMPC_private)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1473, __extension__ __PRETTY_FUNCTION__
))
1471 (A == OMPC_firstprivate && Data.Attributes == OMPC_lastprivate) ||(static_cast <bool> (Data.Attributes == OMPC_unknown ||
(A == Data.Attributes) || (A == OMPC_firstprivate &&
Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate
&& Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable
(D).first && A == OMPC_private)) ? void (0) : __assert_fail
("Data.Attributes == OMPC_unknown || (A == Data.Attributes) || (A == OMPC_firstprivate && Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable(D).first && A == OMPC_private)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1473, __extension__ __PRETTY_FUNCTION__
))
1472 (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) ||(static_cast <bool> (Data.Attributes == OMPC_unknown ||
(A == Data.Attributes) || (A == OMPC_firstprivate &&
Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate
&& Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable
(D).first && A == OMPC_private)) ? void (0) : __assert_fail
("Data.Attributes == OMPC_unknown || (A == Data.Attributes) || (A == OMPC_firstprivate && Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable(D).first && A == OMPC_private)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1473, __extension__ __PRETTY_FUNCTION__
))
1473 (isLoopControlVariable(D).first && A == OMPC_private))(static_cast <bool> (Data.Attributes == OMPC_unknown ||
(A == Data.Attributes) || (A == OMPC_firstprivate &&
Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate
&& Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable
(D).first && A == OMPC_private)) ? void (0) : __assert_fail
("Data.Attributes == OMPC_unknown || (A == Data.Attributes) || (A == OMPC_firstprivate && Data.Attributes == OMPC_lastprivate) || (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) || (isLoopControlVariable(D).first && A == OMPC_private)"
, "clang/lib/Sema/SemaOpenMP.cpp", 1473, __extension__ __PRETTY_FUNCTION__
))
;
1474 Data.Modifier = Modifier;
1475 if (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) {
1476 Data.RefExpr.setInt(/*IntVal=*/true);
1477 return;
1478 }
1479 const bool IsLastprivate =
1480 A == OMPC_lastprivate || Data.Attributes == OMPC_lastprivate;
1481 Data.Attributes = A;
1482 Data.RefExpr.setPointerAndInt(E, IsLastprivate);
1483 Data.PrivateCopy = PrivateCopy;
1484 Data.AppliedToPointee = AppliedToPointee;
1485 if (PrivateCopy) {
1486 DSAInfo &Data = getTopOfStack().SharingMap[PrivateCopy->getDecl()];
1487 Data.Modifier = Modifier;
1488 Data.Attributes = A;
1489 Data.RefExpr.setPointerAndInt(PrivateCopy, IsLastprivate);
1490 Data.PrivateCopy = nullptr;
1491 Data.AppliedToPointee = AppliedToPointee;
1492 }
1493 }
1494}
1495
1496/// Build a variable declaration for OpenMP loop iteration variable.
1497static VarDecl *buildVarDecl(Sema &SemaRef, SourceLocation Loc, QualType Type,
1498 StringRef Name, const AttrVec *Attrs = nullptr,
1499 DeclRefExpr *OrigRef = nullptr) {
1500 DeclContext *DC = SemaRef.CurContext;
1501 IdentifierInfo *II = &SemaRef.PP.getIdentifierTable().get(Name);
1502 TypeSourceInfo *TInfo = SemaRef.Context.getTrivialTypeSourceInfo(Type, Loc);
1503 auto *Decl =
1504 VarDecl::Create(SemaRef.Context, DC, Loc, Loc, II, Type, TInfo, SC_None);
1505 if (Attrs) {
1506 for (specific_attr_iterator<AlignedAttr> I(Attrs->begin()), E(Attrs->end());
1507 I != E; ++I)
1508 Decl->addAttr(*I);
1509 }
1510 Decl->setImplicit();
1511 if (OrigRef) {
1512 Decl->addAttr(
1513 OMPReferencedVarAttr::CreateImplicit(SemaRef.Context, OrigRef));
1514 }
1515 return Decl;
1516}
1517
1518static DeclRefExpr *buildDeclRefExpr(Sema &S, VarDecl *D, QualType Ty,
1519 SourceLocation Loc,
1520 bool RefersToCapture = false) {
1521 D->setReferenced();
1522 D->markUsed(S.Context);
1523 return DeclRefExpr::Create(S.getASTContext(), NestedNameSpecifierLoc(),
1524 SourceLocation(), D, RefersToCapture, Loc, Ty,
1525 VK_LValue);
1526}
1527
1528void DSAStackTy::addTaskgroupReductionData(const ValueDecl *D, SourceRange SR,
1529 BinaryOperatorKind BOK) {
1530 D = getCanonicalDecl(D);
1531 assert(!isStackEmpty() && "Data-sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1531, __extension__ __PRETTY_FUNCTION__
))
;
1532 assert((static_cast <bool> (getTopOfStack().SharingMap[D].Attributes
== OMPC_reduction && "Additional reduction info may be specified only for reduction items."
) ? void (0) : __assert_fail ("getTopOfStack().SharingMap[D].Attributes == OMPC_reduction && \"Additional reduction info may be specified only for reduction items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1534, __extension__ __PRETTY_FUNCTION__
))
1533 getTopOfStack().SharingMap[D].Attributes == OMPC_reduction &&(static_cast <bool> (getTopOfStack().SharingMap[D].Attributes
== OMPC_reduction && "Additional reduction info may be specified only for reduction items."
) ? void (0) : __assert_fail ("getTopOfStack().SharingMap[D].Attributes == OMPC_reduction && \"Additional reduction info may be specified only for reduction items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1534, __extension__ __PRETTY_FUNCTION__
))
1534 "Additional reduction info may be specified only for reduction items.")(static_cast <bool> (getTopOfStack().SharingMap[D].Attributes
== OMPC_reduction && "Additional reduction info may be specified only for reduction items."
) ? void (0) : __assert_fail ("getTopOfStack().SharingMap[D].Attributes == OMPC_reduction && \"Additional reduction info may be specified only for reduction items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1534, __extension__ __PRETTY_FUNCTION__
))
;
1535 ReductionData &ReductionData = getTopOfStack().ReductionMap[D];
1536 assert(ReductionData.ReductionRange.isInvalid() &&(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
1537 (getTopOfStack().Directive == OMPD_taskgroup ||(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
1538 ((isOpenMPParallelDirective(getTopOfStack().Directive) ||(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
1539 isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
1540 !isOpenMPSimdDirective(getTopOfStack().Directive))) &&(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
1541 "Additional reduction info may be specified only once for reduction "(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
1542 "items.")(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1542, __extension__ __PRETTY_FUNCTION__
))
;
1543 ReductionData.set(BOK, SR);
1544 Expr *&TaskgroupReductionRef = getTopOfStack().TaskgroupReductionRef;
1545 if (!TaskgroupReductionRef) {
1546 VarDecl *VD = buildVarDecl(SemaRef, SR.getBegin(),
1547 SemaRef.Context.VoidPtrTy, ".task_red.");
1548 TaskgroupReductionRef =
1549 buildDeclRefExpr(SemaRef, VD, SemaRef.Context.VoidPtrTy, SR.getBegin());
1550 }
1551}
1552
1553void DSAStackTy::addTaskgroupReductionData(const ValueDecl *D, SourceRange SR,
1554 const Expr *ReductionRef) {
1555 D = getCanonicalDecl(D);
1556 assert(!isStackEmpty() && "Data-sharing attributes stack is empty")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty"
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1556, __extension__ __PRETTY_FUNCTION__
))
;
1557 assert((static_cast <bool> (getTopOfStack().SharingMap[D].Attributes
== OMPC_reduction && "Additional reduction info may be specified only for reduction items."
) ? void (0) : __assert_fail ("getTopOfStack().SharingMap[D].Attributes == OMPC_reduction && \"Additional reduction info may be specified only for reduction items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1559, __extension__ __PRETTY_FUNCTION__
))
1558 getTopOfStack().SharingMap[D].Attributes == OMPC_reduction &&(static_cast <bool> (getTopOfStack().SharingMap[D].Attributes
== OMPC_reduction && "Additional reduction info may be specified only for reduction items."
) ? void (0) : __assert_fail ("getTopOfStack().SharingMap[D].Attributes == OMPC_reduction && \"Additional reduction info may be specified only for reduction items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1559, __extension__ __PRETTY_FUNCTION__
))
1559 "Additional reduction info may be specified only for reduction items.")(static_cast <bool> (getTopOfStack().SharingMap[D].Attributes
== OMPC_reduction && "Additional reduction info may be specified only for reduction items."
) ? void (0) : __assert_fail ("getTopOfStack().SharingMap[D].Attributes == OMPC_reduction && \"Additional reduction info may be specified only for reduction items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1559, __extension__ __PRETTY_FUNCTION__
))
;
1560 ReductionData &ReductionData = getTopOfStack().ReductionMap[D];
1561 assert(ReductionData.ReductionRange.isInvalid() &&(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
1562 (getTopOfStack().Directive == OMPD_taskgroup ||(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
1563 ((isOpenMPParallelDirective(getTopOfStack().Directive) ||(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
1564 isOpenMPWorksharingDirective(getTopOfStack().Directive)) &&(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
1565 !isOpenMPSimdDirective(getTopOfStack().Directive))) &&(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
1566 "Additional reduction info may be specified only once for reduction "(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
1567 "items.")(static_cast <bool> (ReductionData.ReductionRange.isInvalid
() && (getTopOfStack().Directive == OMPD_taskgroup ||
((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective
(getTopOfStack().Directive)) && !isOpenMPSimdDirective
(getTopOfStack().Directive))) && "Additional reduction info may be specified only once for reduction "
"items.") ? void (0) : __assert_fail ("ReductionData.ReductionRange.isInvalid() && (getTopOfStack().Directive == OMPD_taskgroup || ((isOpenMPParallelDirective(getTopOfStack().Directive) || isOpenMPWorksharingDirective(getTopOfStack().Directive)) && !isOpenMPSimdDirective(getTopOfStack().Directive))) && \"Additional reduction info may be specified only once for reduction \" \"items.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1567, __extension__ __PRETTY_FUNCTION__
))
;
1568 ReductionData.set(ReductionRef, SR);
1569 Expr *&TaskgroupReductionRef = getTopOfStack().TaskgroupReductionRef;
1570 if (!TaskgroupReductionRef) {
1571 VarDecl *VD = buildVarDecl(SemaRef, SR.getBegin(),
1572 SemaRef.Context.VoidPtrTy, ".task_red.");
1573 TaskgroupReductionRef =
1574 buildDeclRefExpr(SemaRef, VD, SemaRef.Context.VoidPtrTy, SR.getBegin());
1575 }
1576}
1577
1578const DSAStackTy::DSAVarData DSAStackTy::getTopMostTaskgroupReductionData(
1579 const ValueDecl *D, SourceRange &SR, BinaryOperatorKind &BOK,
1580 Expr *&TaskgroupDescriptor) const {
1581 D = getCanonicalDecl(D);
1582 assert(!isStackEmpty() && "Data-sharing attributes stack is empty.")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty."
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1582, __extension__ __PRETTY_FUNCTION__
))
;
1583 for (const_iterator I = begin() + 1, E = end(); I != E; ++I) {
1584 const DSAInfo &Data = I->SharingMap.lookup(D);
1585 if (Data.Attributes != OMPC_reduction ||
1586 Data.Modifier != OMPC_REDUCTION_task)
1587 continue;
1588 const ReductionData &ReductionData = I->ReductionMap.lookup(D);
1589 if (!ReductionData.ReductionOp ||
1590 ReductionData.ReductionOp.is<const Expr *>())
1591 return DSAVarData();
1592 SR = ReductionData.ReductionRange;
1593 BOK = ReductionData.ReductionOp.get<ReductionData::BOKPtrType>();
1594 assert(I->TaskgroupReductionRef && "taskgroup reduction reference "(static_cast <bool> (I->TaskgroupReductionRef &&
"taskgroup reduction reference " "expression for the descriptor is not "
"set.") ? void (0) : __assert_fail ("I->TaskgroupReductionRef && \"taskgroup reduction reference \" \"expression for the descriptor is not \" \"set.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1596, __extension__ __PRETTY_FUNCTION__
))
1595 "expression for the descriptor is not "(static_cast <bool> (I->TaskgroupReductionRef &&
"taskgroup reduction reference " "expression for the descriptor is not "
"set.") ? void (0) : __assert_fail ("I->TaskgroupReductionRef && \"taskgroup reduction reference \" \"expression for the descriptor is not \" \"set.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1596, __extension__ __PRETTY_FUNCTION__
))
1596 "set.")(static_cast <bool> (I->TaskgroupReductionRef &&
"taskgroup reduction reference " "expression for the descriptor is not "
"set.") ? void (0) : __assert_fail ("I->TaskgroupReductionRef && \"taskgroup reduction reference \" \"expression for the descriptor is not \" \"set.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1596, __extension__ __PRETTY_FUNCTION__
))
;
1597 TaskgroupDescriptor = I->TaskgroupReductionRef;
1598 return DSAVarData(I->Directive, OMPC_reduction, Data.RefExpr.getPointer(),
1599 Data.PrivateCopy, I->DefaultAttrLoc, OMPC_REDUCTION_task,
1600 /*AppliedToPointee=*/false);
1601 }
1602 return DSAVarData();
1603}
1604
1605const DSAStackTy::DSAVarData DSAStackTy::getTopMostTaskgroupReductionData(
1606 const ValueDecl *D, SourceRange &SR, const Expr *&ReductionRef,
1607 Expr *&TaskgroupDescriptor) const {
1608 D = getCanonicalDecl(D);
1609 assert(!isStackEmpty() && "Data-sharing attributes stack is empty.")(static_cast <bool> (!isStackEmpty() && "Data-sharing attributes stack is empty."
) ? void (0) : __assert_fail ("!isStackEmpty() && \"Data-sharing attributes stack is empty.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1609, __extension__ __PRETTY_FUNCTION__
))
;
1610 for (const_iterator I = begin() + 1, E = end(); I != E; ++I) {
1611 const DSAInfo &Data = I->SharingMap.lookup(D);
1612 if (Data.Attributes != OMPC_reduction ||
1613 Data.Modifier != OMPC_REDUCTION_task)
1614 continue;
1615 const ReductionData &ReductionData = I->ReductionMap.lookup(D);
1616 if (!ReductionData.ReductionOp ||
1617 !ReductionData.ReductionOp.is<const Expr *>())
1618 return DSAVarData();
1619 SR = ReductionData.ReductionRange;
1620 ReductionRef = ReductionData.ReductionOp.get<const Expr *>();
1621 assert(I->TaskgroupReductionRef && "taskgroup reduction reference "(static_cast <bool> (I->TaskgroupReductionRef &&
"taskgroup reduction reference " "expression for the descriptor is not "
"set.") ? void (0) : __assert_fail ("I->TaskgroupReductionRef && \"taskgroup reduction reference \" \"expression for the descriptor is not \" \"set.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1623, __extension__ __PRETTY_FUNCTION__
))
1622 "expression for the descriptor is not "(static_cast <bool> (I->TaskgroupReductionRef &&
"taskgroup reduction reference " "expression for the descriptor is not "
"set.") ? void (0) : __assert_fail ("I->TaskgroupReductionRef && \"taskgroup reduction reference \" \"expression for the descriptor is not \" \"set.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1623, __extension__ __PRETTY_FUNCTION__
))
1623 "set.")(static_cast <bool> (I->TaskgroupReductionRef &&
"taskgroup reduction reference " "expression for the descriptor is not "
"set.") ? void (0) : __assert_fail ("I->TaskgroupReductionRef && \"taskgroup reduction reference \" \"expression for the descriptor is not \" \"set.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1623, __extension__ __PRETTY_FUNCTION__
))
;
1624 TaskgroupDescriptor = I->TaskgroupReductionRef;
1625 return DSAVarData(I->Directive, OMPC_reduction, Data.RefExpr.getPointer(),
1626 Data.PrivateCopy, I->DefaultAttrLoc, OMPC_REDUCTION_task,
1627 /*AppliedToPointee=*/false);
1628 }
1629 return DSAVarData();
1630}
1631
1632bool DSAStackTy::isOpenMPLocal(VarDecl *D, const_iterator I) const {
1633 D = D->getCanonicalDecl();
1634 for (const_iterator E = end(); I != E; ++I) {
1635 if (isImplicitOrExplicitTaskingRegion(I->Directive) ||
1636 isOpenMPTargetExecutionDirective(I->Directive)) {
1637 if (I->CurScope) {
1638 Scope *TopScope = I->CurScope->getParent();
1639 Scope *CurScope = getCurScope();
1640 while (CurScope && CurScope != TopScope && !CurScope->isDeclScope(D))
1641 CurScope = CurScope->getParent();
1642 return CurScope != TopScope;
1643 }
1644 for (DeclContext *DC = D->getDeclContext(); DC; DC = DC->getParent())
1645 if (I->Context == DC)
1646 return true;
1647 return false;
1648 }
1649 }
1650 return false;
1651}
1652
1653static bool isConstNotMutableType(Sema &SemaRef, QualType Type,
1654 bool AcceptIfMutable = true,
1655 bool *IsClassType = nullptr) {
1656 ASTContext &Context = SemaRef.getASTContext();
1657 Type = Type.getNonReferenceType().getCanonicalType();
1658 bool IsConstant = Type.isConstant(Context);
1659 Type = Context.getBaseElementType(Type);
1660 const CXXRecordDecl *RD = AcceptIfMutable && SemaRef.getLangOpts().CPlusPlus
1661 ? Type->getAsCXXRecordDecl()
1662 : nullptr;
1663 if (const auto *CTSD = dyn_cast_or_null<ClassTemplateSpecializationDecl>(RD))
1664 if (const ClassTemplateDecl *CTD = CTSD->getSpecializedTemplate())
1665 RD = CTD->getTemplatedDecl();
1666 if (IsClassType)
1667 *IsClassType = RD;
1668 return IsConstant && !(SemaRef.getLangOpts().CPlusPlus && RD &&
1669 RD->hasDefinition() && RD->hasMutableFields());
1670}
1671
1672static bool rejectConstNotMutableType(Sema &SemaRef, const ValueDecl *D,
1673 QualType Type, OpenMPClauseKind CKind,
1674 SourceLocation ELoc,
1675 bool AcceptIfMutable = true,
1676 bool ListItemNotVar = false) {
1677 ASTContext &Context = SemaRef.getASTContext();
1678 bool IsClassType;
1679 if (isConstNotMutableType(SemaRef, Type, AcceptIfMutable, &IsClassType)) {
1680 unsigned Diag = ListItemNotVar ? diag::err_omp_const_list_item
1681 : IsClassType ? diag::err_omp_const_not_mutable_variable
1682 : diag::err_omp_const_variable;
1683 SemaRef.Diag(ELoc, Diag) << getOpenMPClauseName(CKind);
1684 if (!ListItemNotVar && D) {
1685 const VarDecl *VD = dyn_cast<VarDecl>(D);
1686 bool IsDecl = !VD || VD->isThisDeclarationADefinition(Context) ==
1687 VarDecl::DeclarationOnly;
1688 SemaRef.Diag(D->getLocation(),
1689 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1690 << D;
1691 }
1692 return true;
1693 }
1694 return false;
1695}
1696
1697const DSAStackTy::DSAVarData DSAStackTy::getTopDSA(ValueDecl *D,
1698 bool FromParent) {
1699 D = getCanonicalDecl(D);
1700 DSAVarData DVar;
1701
1702 auto *VD = dyn_cast<VarDecl>(D);
1703 auto TI = Threadprivates.find(D);
1704 if (TI != Threadprivates.end()) {
1705 DVar.RefExpr = TI->getSecond().RefExpr.getPointer();
1706 DVar.CKind = OMPC_threadprivate;
1707 DVar.Modifier = TI->getSecond().Modifier;
1708 return DVar;
1709 }
1710 if (VD && VD->hasAttr<OMPThreadPrivateDeclAttr>()) {
1711 DVar.RefExpr = buildDeclRefExpr(
1712 SemaRef, VD, D->getType().getNonReferenceType(),
1713 VD->getAttr<OMPThreadPrivateDeclAttr>()->getLocation());
1714 DVar.CKind = OMPC_threadprivate;
1715 addDSA(D, DVar.RefExpr, OMPC_threadprivate);
1716 return DVar;
1717 }
1718 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1719 // in a Construct, C/C++, predetermined, p.1]
1720 // Variables appearing in threadprivate directives are threadprivate.
1721 if ((VD && VD->getTLSKind() != VarDecl::TLS_None &&
1722 !(VD->hasAttr<OMPThreadPrivateDeclAttr>() &&
1723 SemaRef.getLangOpts().OpenMPUseTLS &&
1724 SemaRef.getASTContext().getTargetInfo().isTLSSupported())) ||
1725 (VD && VD->getStorageClass() == SC_Register &&
1726 VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl())) {
1727 DVar.RefExpr = buildDeclRefExpr(
1728 SemaRef, VD, D->getType().getNonReferenceType(), D->getLocation());
1729 DVar.CKind = OMPC_threadprivate;
1730 addDSA(D, DVar.RefExpr, OMPC_threadprivate);
1731 return DVar;
1732 }
1733 if (SemaRef.getLangOpts().OpenMPCUDAMode && VD &&
1734 VD->isLocalVarDeclOrParm() && !isStackEmpty() &&
1735 !isLoopControlVariable(D).first) {
1736 const_iterator IterTarget =
1737 std::find_if(begin(), end(), [](const SharingMapTy &Data) {
1738 return isOpenMPTargetExecutionDirective(Data.Directive);
1739 });
1740 if (IterTarget != end()) {
1741 const_iterator ParentIterTarget = IterTarget + 1;
1742 for (const_iterator Iter = begin(); Iter != ParentIterTarget; ++Iter) {
1743 if (isOpenMPLocal(VD, Iter)) {
1744 DVar.RefExpr =
1745 buildDeclRefExpr(SemaRef, VD, D->getType().getNonReferenceType(),
1746 D->getLocation());
1747 DVar.CKind = OMPC_threadprivate;
1748 return DVar;
1749 }
1750 }
1751 if (!isClauseParsingMode() || IterTarget != begin()) {
1752 auto DSAIter = IterTarget->SharingMap.find(D);
1753 if (DSAIter != IterTarget->SharingMap.end() &&
1754 isOpenMPPrivate(DSAIter->getSecond().Attributes)) {
1755 DVar.RefExpr = DSAIter->getSecond().RefExpr.getPointer();
1756 DVar.CKind = OMPC_threadprivate;
1757 return DVar;
1758 }
1759 const_iterator End = end();
1760 if (!SemaRef.isOpenMPCapturedByRef(D,
1761 std::distance(ParentIterTarget, End),
1762 /*OpenMPCaptureLevel=*/0)) {
1763 DVar.RefExpr =
1764 buildDeclRefExpr(SemaRef, VD, D->getType().getNonReferenceType(),
1765 IterTarget->ConstructLoc);
1766 DVar.CKind = OMPC_threadprivate;
1767 return DVar;
1768 }
1769 }
1770 }
1771 }
1772
1773 if (isStackEmpty())
1774 // Not in OpenMP execution region and top scope was already checked.
1775 return DVar;
1776
1777 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1778 // in a Construct, C/C++, predetermined, p.4]
1779 // Static data members are shared.
1780 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1781 // in a Construct, C/C++, predetermined, p.7]
1782 // Variables with static storage duration that are declared in a scope
1783 // inside the construct are shared.
1784 if (VD && VD->isStaticDataMember()) {
1785 // Check for explicitly specified attributes.
1786 const_iterator I = begin();
1787 const_iterator EndI = end();
1788 if (FromParent && I != EndI)
1789 ++I;
1790 if (I != EndI) {
1791 auto It = I->SharingMap.find(D);
1792 if (It != I->SharingMap.end()) {
1793 const DSAInfo &Data = It->getSecond();
1794 DVar.RefExpr = Data.RefExpr.getPointer();
1795 DVar.PrivateCopy = Data.PrivateCopy;
1796 DVar.CKind = Data.Attributes;
1797 DVar.ImplicitDSALoc = I->DefaultAttrLoc;
1798 DVar.DKind = I->Directive;
1799 DVar.Modifier = Data.Modifier;
1800 DVar.AppliedToPointee = Data.AppliedToPointee;
1801 return DVar;
1802 }
1803 }
1804
1805 DVar.CKind = OMPC_shared;
1806 return DVar;
1807 }
1808
1809 auto &&MatchesAlways = [](OpenMPDirectiveKind) { return true; };
1810 // The predetermined shared attribute for const-qualified types having no
1811 // mutable members was removed after OpenMP 3.1.
1812 if (SemaRef.LangOpts.OpenMP <= 31) {
1813 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
1814 // in a Construct, C/C++, predetermined, p.6]
1815 // Variables with const qualified type having no mutable member are
1816 // shared.
1817 if (isConstNotMutableType(SemaRef, D->getType())) {
1818 // Variables with const-qualified type having no mutable member may be
1819 // listed in a firstprivate clause, even if they are static data members.
1820 DSAVarData DVarTemp = hasInnermostDSA(
1821 D,
1822 [](OpenMPClauseKind C, bool) {
1823 return C == OMPC_firstprivate || C == OMPC_shared;
1824 },
1825 MatchesAlways, FromParent);
1826 if (DVarTemp.CKind != OMPC_unknown && DVarTemp.RefExpr)
1827 return DVarTemp;
1828
1829 DVar.CKind = OMPC_shared;
1830 return DVar;
1831 }
1832 }
1833
1834 // Explicitly specified attributes and local variables with predetermined
1835 // attributes.
1836 const_iterator I = begin();
1837 const_iterator EndI = end();
1838 if (FromParent && I != EndI)
1839 ++I;
1840 if (I == EndI)
1841 return DVar;
1842 auto It = I->SharingMap.find(D);
1843 if (It != I->SharingMap.end()) {
1844 const DSAInfo &Data = It->getSecond();
1845 DVar.RefExpr = Data.RefExpr.getPointer();
1846 DVar.PrivateCopy = Data.PrivateCopy;
1847 DVar.CKind = Data.Attributes;
1848 DVar.ImplicitDSALoc = I->DefaultAttrLoc;
1849 DVar.DKind = I->Directive;
1850 DVar.Modifier = Data.Modifier;
1851 DVar.AppliedToPointee = Data.AppliedToPointee;
1852 }
1853
1854 return DVar;
1855}
1856
1857const DSAStackTy::DSAVarData DSAStackTy::getImplicitDSA(ValueDecl *D,
1858 bool FromParent) const {
1859 if (isStackEmpty()) {
1860 const_iterator I;
1861 return getDSA(I, D);
1862 }
1863 D = getCanonicalDecl(D);
1864 const_iterator StartI = begin();
1865 const_iterator EndI = end();
1866 if (FromParent && StartI != EndI)
1867 ++StartI;
1868 return getDSA(StartI, D);
1869}
1870
1871const DSAStackTy::DSAVarData DSAStackTy::getImplicitDSA(ValueDecl *D,
1872 unsigned Level) const {
1873 if (getStackSize() <= Level)
1874 return DSAVarData();
1875 D = getCanonicalDecl(D);
1876 const_iterator StartI = std::next(begin(), getStackSize() - 1 - Level);
1877 return getDSA(StartI, D);
1878}
1879
1880const DSAStackTy::DSAVarData
1881DSAStackTy::hasDSA(ValueDecl *D,
1882 const llvm::function_ref<bool(OpenMPClauseKind, bool,
1883 DefaultDataSharingAttributes)>
1884 CPred,
1885 const llvm::function_ref<bool(OpenMPDirectiveKind)> DPred,
1886 bool FromParent) const {
1887 if (isStackEmpty())
1888 return {};
1889 D = getCanonicalDecl(D);
1890 const_iterator I = begin();
1891 const_iterator EndI = end();
1892 if (FromParent && I != EndI)
1893 ++I;
1894 for (; I != EndI; ++I) {
1895 if (!DPred(I->Directive) &&
1896 !isImplicitOrExplicitTaskingRegion(I->Directive))
1897 continue;
1898 const_iterator NewI = I;
1899 DSAVarData DVar = getDSA(NewI, D);
1900 if (I == NewI && CPred(DVar.CKind, DVar.AppliedToPointee, I->DefaultAttr))
1901 return DVar;
1902 }
1903 return {};
1904}
1905
1906const DSAStackTy::DSAVarData DSAStackTy::hasInnermostDSA(
1907 ValueDecl *D, const llvm::function_ref<bool(OpenMPClauseKind, bool)> CPred,
1908 const llvm::function_ref<bool(OpenMPDirectiveKind)> DPred,
1909 bool FromParent) const {
1910 if (isStackEmpty())
1911 return {};
1912 D = getCanonicalDecl(D);
1913 const_iterator StartI = begin();
1914 const_iterator EndI = end();
1915 if (FromParent && StartI != EndI)
1916 ++StartI;
1917 if (StartI == EndI || !DPred(StartI->Directive))
1918 return {};
1919 const_iterator NewI = StartI;
1920 DSAVarData DVar = getDSA(NewI, D);
1921 return (NewI == StartI && CPred(DVar.CKind, DVar.AppliedToPointee))
1922 ? DVar
1923 : DSAVarData();
1924}
1925
1926bool DSAStackTy::hasExplicitDSA(
1927 const ValueDecl *D,
1928 const llvm::function_ref<bool(OpenMPClauseKind, bool)> CPred,
1929 unsigned Level, bool NotLastprivate) const {
1930 if (getStackSize() <= Level)
1931 return false;
1932 D = getCanonicalDecl(D);
1933 const SharingMapTy &StackElem = getStackElemAtLevel(Level);
1934 auto I = StackElem.SharingMap.find(D);
1935 if (I != StackElem.SharingMap.end() && I->getSecond().RefExpr.getPointer() &&
1936 CPred(I->getSecond().Attributes, I->getSecond().AppliedToPointee) &&
1937 (!NotLastprivate || !I->getSecond().RefExpr.getInt()))
1938 return true;
1939 // Check predetermined rules for the loop control variables.
1940 auto LI = StackElem.LCVMap.find(D);
1941 if (LI != StackElem.LCVMap.end())
1942 return CPred(OMPC_private, /*AppliedToPointee=*/false);
1943 return false;
1944}
1945
1946bool DSAStackTy::hasExplicitDirective(
1947 const llvm::function_ref<bool(OpenMPDirectiveKind)> DPred,
1948 unsigned Level) const {
1949 if (getStackSize() <= Level)
1950 return false;
1951 const SharingMapTy &StackElem = getStackElemAtLevel(Level);
1952 return DPred(StackElem.Directive);
1953}
1954
1955bool DSAStackTy::hasDirective(
1956 const llvm::function_ref<bool(OpenMPDirectiveKind,
1957 const DeclarationNameInfo &, SourceLocation)>
1958 DPred,
1959 bool FromParent) const {
1960 // We look only in the enclosing region.
1961 size_t Skip = FromParent ? 2 : 1;
1962 for (const_iterator I = begin() + std::min(Skip, getStackSize()), E = end();
1963 I != E; ++I) {
1964 if (DPred(I->Directive, I->DirectiveName, I->ConstructLoc))
1965 return true;
1966 }
1967 return false;
1968}
1969
1970void Sema::InitDataSharingAttributesStack() {
1971 VarDataSharingAttributesStack = new DSAStackTy(*this);
1972}
1973
1974#define DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
static_cast<DSAStackTy *>(VarDataSharingAttributesStack)
1975
1976void Sema::pushOpenMPFunctionRegion() { DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->pushFunction(); }
1977
1978void Sema::popOpenMPFunctionRegion(const FunctionScopeInfo *OldFSI) {
1979 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->popFunction(OldFSI);
1980}
1981
1982static bool isOpenMPDeviceDelayedContext(Sema &S) {
1983 assert(S.LangOpts.OpenMP && S.LangOpts.OpenMPIsDevice &&(static_cast <bool> (S.LangOpts.OpenMP && S.LangOpts
.OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("S.LangOpts.OpenMP && S.LangOpts.OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1984, __extension__ __PRETTY_FUNCTION__
))
1984 "Expected OpenMP device compilation.")(static_cast <bool> (S.LangOpts.OpenMP && S.LangOpts
.OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("S.LangOpts.OpenMP && S.LangOpts.OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 1984, __extension__ __PRETTY_FUNCTION__
))
;
1985 return !S.isInOpenMPTargetExecutionDirective();
1986}
1987
1988namespace {
1989/// Status of the function emission on the host/device.
1990enum class FunctionEmissionStatus {
1991 Emitted,
1992 Discarded,
1993 Unknown,
1994};
1995} // anonymous namespace
1996
1997Sema::SemaDiagnosticBuilder Sema::diagIfOpenMPDeviceCode(SourceLocation Loc,
1998 unsigned DiagID,
1999 FunctionDecl *FD) {
2000 assert(LangOpts.OpenMP && LangOpts.OpenMPIsDevice &&(static_cast <bool> (LangOpts.OpenMP && LangOpts
.OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && LangOpts.OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2001, __extension__ __PRETTY_FUNCTION__
))
2001 "Expected OpenMP device compilation.")(static_cast <bool> (LangOpts.OpenMP && LangOpts
.OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && LangOpts.OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2001, __extension__ __PRETTY_FUNCTION__
))
;
2002
2003 SemaDiagnosticBuilder::Kind Kind = SemaDiagnosticBuilder::K_Nop;
2004 if (FD) {
2005 FunctionEmissionStatus FES = getEmissionStatus(FD);
2006 switch (FES) {
2007 case FunctionEmissionStatus::Emitted:
2008 Kind = SemaDiagnosticBuilder::K_Immediate;
2009 break;
2010 case FunctionEmissionStatus::Unknown:
2011 // TODO: We should always delay diagnostics here in case a target
2012 // region is in a function we do not emit. However, as the
2013 // current diagnostics are associated with the function containing
2014 // the target region and we do not emit that one, we would miss out
2015 // on diagnostics for the target region itself. We need to anchor
2016 // the diagnostics with the new generated function *or* ensure we
2017 // emit diagnostics associated with the surrounding function.
2018 Kind = isOpenMPDeviceDelayedContext(*this)
2019 ? SemaDiagnosticBuilder::K_Deferred
2020 : SemaDiagnosticBuilder::K_Immediate;
2021 break;
2022 case FunctionEmissionStatus::TemplateDiscarded:
2023 case FunctionEmissionStatus::OMPDiscarded:
2024 Kind = SemaDiagnosticBuilder::K_Nop;
2025 break;
2026 case FunctionEmissionStatus::CUDADiscarded:
2027 llvm_unreachable("CUDADiscarded unexpected in OpenMP device compilation")::llvm::llvm_unreachable_internal("CUDADiscarded unexpected in OpenMP device compilation"
, "clang/lib/Sema/SemaOpenMP.cpp", 2027)
;
2028 break;
2029 }
2030 }
2031
2032 return SemaDiagnosticBuilder(Kind, Loc, DiagID, FD, *this);
2033}
2034
2035Sema::SemaDiagnosticBuilder Sema::diagIfOpenMPHostCode(SourceLocation Loc,
2036 unsigned DiagID,
2037 FunctionDecl *FD) {
2038 assert(LangOpts.OpenMP && !LangOpts.OpenMPIsDevice &&(static_cast <bool> (LangOpts.OpenMP && !LangOpts
.OpenMPIsDevice && "Expected OpenMP host compilation."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && !LangOpts.OpenMPIsDevice && \"Expected OpenMP host compilation.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2039, __extension__ __PRETTY_FUNCTION__
))
2039 "Expected OpenMP host compilation.")(static_cast <bool> (LangOpts.OpenMP && !LangOpts
.OpenMPIsDevice && "Expected OpenMP host compilation."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && !LangOpts.OpenMPIsDevice && \"Expected OpenMP host compilation.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2039, __extension__ __PRETTY_FUNCTION__
))
;
2040
2041 SemaDiagnosticBuilder::Kind Kind = SemaDiagnosticBuilder::K_Nop;
2042 if (FD) {
2043 FunctionEmissionStatus FES = getEmissionStatus(FD);
2044 switch (FES) {
2045 case FunctionEmissionStatus::Emitted:
2046 Kind = SemaDiagnosticBuilder::K_Immediate;
2047 break;
2048 case FunctionEmissionStatus::Unknown:
2049 Kind = SemaDiagnosticBuilder::K_Deferred;
2050 break;
2051 case FunctionEmissionStatus::TemplateDiscarded:
2052 case FunctionEmissionStatus::OMPDiscarded:
2053 case FunctionEmissionStatus::CUDADiscarded:
2054 Kind = SemaDiagnosticBuilder::K_Nop;
2055 break;
2056 }
2057 }
2058
2059 return SemaDiagnosticBuilder(Kind, Loc, DiagID, FD, *this);
2060}
2061
2062static OpenMPDefaultmapClauseKind
2063getVariableCategoryFromDecl(const LangOptions &LO, const ValueDecl *VD) {
2064 if (LO.OpenMP <= 45) {
2065 if (VD->getType().getNonReferenceType()->isScalarType())
2066 return OMPC_DEFAULTMAP_scalar;
2067 return OMPC_DEFAULTMAP_aggregate;
2068 }
2069 if (VD->getType().getNonReferenceType()->isAnyPointerType())
2070 return OMPC_DEFAULTMAP_pointer;
2071 if (VD->getType().getNonReferenceType()->isScalarType())
2072 return OMPC_DEFAULTMAP_scalar;
2073 return OMPC_DEFAULTMAP_aggregate;
2074}
2075
2076bool Sema::isOpenMPCapturedByRef(const ValueDecl *D, unsigned Level,
2077 unsigned OpenMPCaptureLevel) const {
2078 assert(LangOpts.OpenMP && "OpenMP is not allowed")(static_cast <bool> (LangOpts.OpenMP && "OpenMP is not allowed"
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2078, __extension__ __PRETTY_FUNCTION__
))
;
2079
2080 ASTContext &Ctx = getASTContext();
2081 bool IsByRef = true;
2082
2083 // Find the directive that is associated with the provided scope.
2084 D = cast<ValueDecl>(D->getCanonicalDecl());
2085 QualType Ty = D->getType();
2086
2087 bool IsVariableUsedInMapClause = false;
2088 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDirective(isOpenMPTargetExecutionDirective, Level)) {
2089 // This table summarizes how a given variable should be passed to the device
2090 // given its type and the clauses where it appears. This table is based on
2091 // the description in OpenMP 4.5 [2.10.4, target Construct] and
2092 // OpenMP 4.5 [2.15.5, Data-mapping Attribute Rules and Clauses].
2093 //
2094 // =========================================================================
2095 // | type | defaultmap | pvt | first | is_device_ptr | map | res. |
2096 // | |(tofrom:scalar)| | pvt | |has_dv_adr| |
2097 // =========================================================================
2098 // | scl | | | | - | | bycopy|
2099 // | scl | | - | x | - | - | bycopy|
2100 // | scl | | x | - | - | - | null |
2101 // | scl | x | | | - | | byref |
2102 // | scl | x | - | x | - | - | bycopy|
2103 // | scl | x | x | - | - | - | null |
2104 // | scl | | - | - | - | x | byref |
2105 // | scl | x | - | - | - | x | byref |
2106 //
2107 // | agg | n.a. | | | - | | byref |
2108 // | agg | n.a. | - | x | - | - | byref |
2109 // | agg | n.a. | x | - | - | - | null |
2110 // | agg | n.a. | - | - | - | x | byref |
2111 // | agg | n.a. | - | - | - | x[] | byref |
2112 //
2113 // | ptr | n.a. | | | - | | bycopy|
2114 // | ptr | n.a. | - | x | - | - | bycopy|
2115 // | ptr | n.a. | x | - | - | - | null |
2116 // | ptr | n.a. | - | - | - | x | byref |
2117 // | ptr | n.a. | - | - | - | x[] | bycopy|
2118 // | ptr | n.a. | - | - | x | | bycopy|
2119 // | ptr | n.a. | - | - | x | x | bycopy|
2120 // | ptr | n.a. | - | - | x | x[] | bycopy|
2121 // =========================================================================
2122 // Legend:
2123 // scl - scalar
2124 // ptr - pointer
2125 // agg - aggregate
2126 // x - applies
2127 // - - invalid in this combination
2128 // [] - mapped with an array section
2129 // byref - should be mapped by reference
2130 // byval - should be mapped by value
2131 // null - initialize a local variable to null on the device
2132 //
2133 // Observations:
2134 // - All scalar declarations that show up in a map clause have to be passed
2135 // by reference, because they may have been mapped in the enclosing data
2136 // environment.
2137 // - If the scalar value does not fit the size of uintptr, it has to be
2138 // passed by reference, regardless the result in the table above.
2139 // - For pointers mapped by value that have either an implicit map or an
2140 // array section, the runtime library may pass the NULL value to the
2141 // device instead of the value passed to it by the compiler.
2142
2143 if (Ty->isReferenceType())
2144 Ty = Ty->castAs<ReferenceType>()->getPointeeType();
2145
2146 // Locate map clauses and see if the variable being captured is referred to
2147 // in any of those clauses. Here we only care about variables, not fields,
2148 // because fields are part of aggregates.
2149 bool IsVariableAssociatedWithSection = false;
2150
2151 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->checkMappableExprComponentListsForDeclAtLevel(
2152 D, Level,
2153 [&IsVariableUsedInMapClause, &IsVariableAssociatedWithSection,
2154 D](OMPClauseMappableExprCommon::MappableExprComponentListRef
2155 MapExprComponents,
2156 OpenMPClauseKind WhereFoundClauseKind) {
2157 // Both map and has_device_addr clauses information influences how a
2158 // variable is captured. E.g. is_device_ptr does not require changing
2159 // the default behavior.
2160 if (WhereFoundClauseKind != OMPC_map &&
2161 WhereFoundClauseKind != OMPC_has_device_addr)
2162 return false;
2163
2164 auto EI = MapExprComponents.rbegin();
2165 auto EE = MapExprComponents.rend();
2166
2167 assert(EI != EE && "Invalid map expression!")(static_cast <bool> (EI != EE && "Invalid map expression!"
) ? void (0) : __assert_fail ("EI != EE && \"Invalid map expression!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2167, __extension__ __PRETTY_FUNCTION__
))
;
2168
2169 if (isa<DeclRefExpr>(EI->getAssociatedExpression()))
2170 IsVariableUsedInMapClause |= EI->getAssociatedDeclaration() == D;
2171
2172 ++EI;
2173 if (EI == EE)
2174 return false;
2175
2176 if (isa<ArraySubscriptExpr>(EI->getAssociatedExpression()) ||
2177 isa<OMPArraySectionExpr>(EI->getAssociatedExpression()) ||
2178 isa<MemberExpr>(EI->getAssociatedExpression()) ||
2179 isa<OMPArrayShapingExpr>(EI->getAssociatedExpression())) {
2180 IsVariableAssociatedWithSection = true;
2181 // There is nothing more we need to know about this variable.
2182 return true;
2183 }
2184
2185 // Keep looking for more map info.
2186 return false;
2187 });
2188
2189 if (IsVariableUsedInMapClause) {
2190 // If variable is identified in a map clause it is always captured by
2191 // reference except if it is a pointer that is dereferenced somehow.
2192 IsByRef = !(Ty->isPointerType() && IsVariableAssociatedWithSection);
2193 } else {
2194 // By default, all the data that has a scalar type is mapped by copy
2195 // (except for reduction variables).
2196 // Defaultmap scalar is mutual exclusive to defaultmap pointer
2197 IsByRef = (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isForceCaptureByReferenceInTargetExecutable() &&
2198 !Ty->isAnyPointerType()) ||
2199 !Ty->isScalarType() ||
2200 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isDefaultmapCapturedByRef(
2201 Level, getVariableCategoryFromDecl(LangOpts, D)) ||
2202 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2203 D,
2204 [](OpenMPClauseKind K, bool AppliedToPointee) {
2205 return K == OMPC_reduction && !AppliedToPointee;
2206 },
2207 Level);
2208 }
2209 }
2210
2211 if (IsByRef && Ty.getNonReferenceType()->isScalarType()) {
2212 IsByRef =
2213 ((IsVariableUsedInMapClause &&
2214 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCaptureRegion(Level, OpenMPCaptureLevel) ==
2215 OMPD_target) ||
2216 !(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2217 D,
2218 [](OpenMPClauseKind K, bool AppliedToPointee) -> bool {
2219 return K == OMPC_firstprivate ||
2220 (K == OMPC_reduction && AppliedToPointee);
2221 },
2222 Level, /*NotLastprivate=*/true) ||
2223 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isUsesAllocatorsDecl(Level, D))) &&
2224 // If the variable is artificial and must be captured by value - try to
2225 // capture by value.
2226 !(isa<OMPCapturedExprDecl>(D) && !D->hasAttr<OMPCaptureNoInitAttr>() &&
2227 !cast<OMPCapturedExprDecl>(D)->getInit()->isGLValue()) &&
2228 // If the variable is implicitly firstprivate and scalar - capture by
2229 // copy
2230 !((DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() == DSA_firstprivate ||
2231 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() == DSA_private) &&
2232 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2233 D, [](OpenMPClauseKind K, bool) { return K != OMPC_unknown; },
2234 Level) &&
2235 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isLoopControlVariable(D, Level).first);
2236 }
2237
2238 // When passing data by copy, we need to make sure it fits the uintptr size
2239 // and alignment, because the runtime library only deals with uintptr types.
2240 // If it does not fit the uintptr size, we need to pass the data by reference
2241 // instead.
2242 if (!IsByRef &&
2243 (Ctx.getTypeSizeInChars(Ty) >
2244 Ctx.getTypeSizeInChars(Ctx.getUIntPtrType()) ||
2245 Ctx.getDeclAlign(D) > Ctx.getTypeAlignInChars(Ctx.getUIntPtrType()))) {
2246 IsByRef = true;
2247 }
2248
2249 return IsByRef;
2250}
2251
2252unsigned Sema::getOpenMPNestingLevel() const {
2253 assert(getLangOpts().OpenMP)(static_cast <bool> (getLangOpts().OpenMP) ? void (0) :
__assert_fail ("getLangOpts().OpenMP", "clang/lib/Sema/SemaOpenMP.cpp"
, 2253, __extension__ __PRETTY_FUNCTION__))
;
2254 return DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getNestingLevel();
2255}
2256
2257bool Sema::isInOpenMPTaskUntiedContext() const {
2258 return isOpenMPTaskingDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()) &&
2259 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isUntiedRegion();
2260}
2261
2262bool Sema::isInOpenMPTargetExecutionDirective() const {
2263 return (isOpenMPTargetExecutionDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()) &&
2264 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode()) ||
2265 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasDirective(
2266 [](OpenMPDirectiveKind K, const DeclarationNameInfo &,
2267 SourceLocation) -> bool {
2268 return isOpenMPTargetExecutionDirective(K);
2269 },
2270 false);
2271}
2272
2273bool Sema::isOpenMPRebuildMemberExpr(ValueDecl *D) {
2274 // Only rebuild for Field.
2275 if (!dyn_cast<FieldDecl>(D))
2276 return false;
2277 DSAStackTy::DSAVarData DVarPrivate = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasDSA(
2278 D,
2279 [](OpenMPClauseKind C, bool AppliedToPointee,
2280 DefaultDataSharingAttributes DefaultAttr) {
2281 return isOpenMPPrivate(C) && !AppliedToPointee &&
2282 (DefaultAttr == DSA_firstprivate || DefaultAttr == DSA_private);
2283 },
2284 [](OpenMPDirectiveKind) { return true; },
2285 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode());
2286 if (DVarPrivate.CKind != OMPC_unknown)
2287 return true;
2288 return false;
2289}
2290
2291static OMPCapturedExprDecl *buildCaptureDecl(Sema &S, IdentifierInfo *Id,
2292 Expr *CaptureExpr, bool WithInit,
2293 DeclContext *CurContext,
2294 bool AsExpression);
2295
2296VarDecl *Sema::isOpenMPCapturedDecl(ValueDecl *D, bool CheckScopeInfo,
2297 unsigned StopAt) {
2298 assert(LangOpts.OpenMP && "OpenMP is not allowed")(static_cast <bool> (LangOpts.OpenMP && "OpenMP is not allowed"
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2298, __extension__ __PRETTY_FUNCTION__
))
;
2299 D = getCanonicalDecl(D);
2300
2301 auto *VD = dyn_cast<VarDecl>(D);
2302 // Do not capture constexpr variables.
2303 if (VD && VD->isConstexpr())
2304 return nullptr;
2305
2306 // If we want to determine whether the variable should be captured from the
2307 // perspective of the current capturing scope, and we've already left all the
2308 // capturing scopes of the top directive on the stack, check from the
2309 // perspective of its parent directive (if any) instead.
2310 DSAStackTy::ParentDirectiveScope InParentDirectiveRAII(
2311 *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, CheckScopeInfo && DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isBodyComplete());
2312
2313 // If we are attempting to capture a global variable in a directive with
2314 // 'target' we return true so that this global is also mapped to the device.
2315 //
2316 if (VD && !VD->hasLocalStorage() &&
2317 (getCurCapturedRegion() || getCurBlock() || getCurLambda())) {
2318 if (isInOpenMPTargetExecutionDirective()) {
2319 DSAStackTy::DSAVarData DVarTop =
2320 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getTopDSA(D, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode());
2321 if (DVarTop.CKind != OMPC_unknown && DVarTop.RefExpr)
2322 return VD;
2323 // If the declaration is enclosed in a 'declare target' directive,
2324 // then it should not be captured.
2325 //
2326 if (OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD))
2327 return nullptr;
2328 CapturedRegionScopeInfo *CSI = nullptr;
2329 for (FunctionScopeInfo *FSI : llvm::drop_begin(
2330 llvm::reverse(FunctionScopes),
2331 CheckScopeInfo ? (FunctionScopes.size() - (StopAt + 1)) : 0)) {
2332 if (!isa<CapturingScopeInfo>(FSI))
2333 return nullptr;
2334 if (auto *RSI = dyn_cast<CapturedRegionScopeInfo>(FSI))
2335 if (RSI->CapRegionKind == CR_OpenMP) {
2336 CSI = RSI;
2337 break;
2338 }
2339 }
2340 assert(CSI && "Failed to find CapturedRegionScopeInfo")(static_cast <bool> (CSI && "Failed to find CapturedRegionScopeInfo"
) ? void (0) : __assert_fail ("CSI && \"Failed to find CapturedRegionScopeInfo\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2340, __extension__ __PRETTY_FUNCTION__
))
;
2341 SmallVector<OpenMPDirectiveKind, 4> Regions;
2342 getOpenMPCaptureRegions(Regions,
2343 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDirective(CSI->OpenMPLevel));
2344 if (Regions[CSI->OpenMPCaptureLevel] != OMPD_task)
2345 return VD;
2346 }
2347 if (isInOpenMPDeclareTargetContext()) {
2348 // Try to mark variable as declare target if it is used in capturing
2349 // regions.
2350 if (LangOpts.OpenMP <= 45 &&
2351 !OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD))
2352 checkDeclIsAllowedInOpenMPTarget(nullptr, VD);
2353 return nullptr;
2354 }
2355 }
2356
2357 if (CheckScopeInfo) {
2358 bool OpenMPFound = false;
2359 for (unsigned I = StopAt + 1; I > 0; --I) {
2360 FunctionScopeInfo *FSI = FunctionScopes[I - 1];
2361 if (!isa<CapturingScopeInfo>(FSI))
2362 return nullptr;
2363 if (auto *RSI = dyn_cast<CapturedRegionScopeInfo>(FSI))
2364 if (RSI->CapRegionKind == CR_OpenMP) {
2365 OpenMPFound = true;
2366 break;
2367 }
2368 }
2369 if (!OpenMPFound)
2370 return nullptr;
2371 }
2372
2373 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() != OMPD_unknown &&
2374 (!DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode() ||
2375 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getParentDirective() != OMPD_unknown)) {
2376 auto &&Info = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isLoopControlVariable(D);
2377 if (Info.first ||
2378 (VD && VD->hasLocalStorage() &&
2379 isImplicitOrExplicitTaskingRegion(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective())) ||
2380 (VD && DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isForceVarCapturing()))
2381 return VD ? VD : Info.second;
2382 DSAStackTy::DSAVarData DVarTop =
2383 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getTopDSA(D, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode());
2384 if (DVarTop.CKind != OMPC_unknown && isOpenMPPrivate(DVarTop.CKind) &&
2385 (!VD || VD->hasLocalStorage() || !DVarTop.AppliedToPointee))
2386 return VD ? VD : cast<VarDecl>(DVarTop.PrivateCopy->getDecl());
2387 // Threadprivate variables must not be captured.
2388 if (isOpenMPThreadPrivate(DVarTop.CKind))
2389 return nullptr;
2390 // The variable is not private or it is the variable in the directive with
2391 // default(none) clause and not used in any clause.
2392 DSAStackTy::DSAVarData DVarPrivate = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasDSA(
2393 D,
2394 [](OpenMPClauseKind C, bool AppliedToPointee, bool) {
2395 return isOpenMPPrivate(C) && !AppliedToPointee;
2396 },
2397 [](OpenMPDirectiveKind) { return true; },
2398 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode());
2399 // Global shared must not be captured.
2400 if (VD && !VD->hasLocalStorage() && DVarPrivate.CKind == OMPC_unknown &&
2401 ((DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() != DSA_none &&
2402 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() != DSA_private &&
2403 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() != DSA_firstprivate) ||
2404 DVarTop.CKind == OMPC_shared))
2405 return nullptr;
2406 auto *FD = dyn_cast<FieldDecl>(D);
2407 if (DVarPrivate.CKind != OMPC_unknown && !VD && FD &&
2408 !DVarPrivate.PrivateCopy) {
2409 DSAStackTy::DSAVarData DVarPrivate = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasDSA(
2410 D,
2411 [](OpenMPClauseKind C, bool AppliedToPointee,
2412 DefaultDataSharingAttributes DefaultAttr) {
2413 return isOpenMPPrivate(C) && !AppliedToPointee &&
2414 (DefaultAttr == DSA_firstprivate ||
2415 DefaultAttr == DSA_private);
2416 },
2417 [](OpenMPDirectiveKind) { return true; },
2418 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode());
2419 if (DVarPrivate.CKind == OMPC_unknown)
2420 return nullptr;
2421
2422 VarDecl *VD = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getImplicitFDCapExprDecl(FD);
2423 if (VD)
2424 return VD;
2425 if (getCurrentThisType().isNull())
2426 return nullptr;
2427 Expr *ThisExpr = BuildCXXThisExpr(SourceLocation(), getCurrentThisType(),
2428 /*IsImplicit=*/true);
2429 const CXXScopeSpec CS = CXXScopeSpec();
2430 Expr *ME = BuildMemberExpr(ThisExpr, /*IsArrow=*/true, SourceLocation(),
2431 NestedNameSpecifierLoc(), SourceLocation(), FD,
2432 DeclAccessPair::make(FD, FD->getAccess()),
2433 /*HadMultipleCandidates=*/false,
2434 DeclarationNameInfo(), FD->getType(),
2435 VK_LValue, OK_Ordinary);
2436 OMPCapturedExprDecl *CD = buildCaptureDecl(
2437 *this, FD->getIdentifier(), ME, DVarPrivate.CKind != OMPC_private,
2438 CurContext->getParent(), /*AsExpression=*/false);
2439 DeclRefExpr *VDPrivateRefExpr = buildDeclRefExpr(
2440 *this, CD, CD->getType().getNonReferenceType(), SourceLocation());
2441 VD = cast<VarDecl>(VDPrivateRefExpr->getDecl());
2442 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->addImplicitDefaultFirstprivateFD(FD, VD);
2443 return VD;
2444 }
2445 if (DVarPrivate.CKind != OMPC_unknown ||
2446 (VD && (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() == DSA_none ||
2447 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() == DSA_private ||
2448 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() == DSA_firstprivate)))
2449 return VD ? VD : cast<VarDecl>(DVarPrivate.PrivateCopy->getDecl());
2450 }
2451 return nullptr;
2452}
2453
2454void Sema::adjustOpenMPTargetScopeIndex(unsigned &FunctionScopesIndex,
2455 unsigned Level) const {
2456 FunctionScopesIndex -= getOpenMPCaptureLevels(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDirective(Level));
2457}
2458
2459void Sema::startOpenMPLoop() {
2460 assert(LangOpts.OpenMP && "OpenMP must be enabled.")(static_cast <bool> (LangOpts.OpenMP && "OpenMP must be enabled."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP must be enabled.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2460, __extension__ __PRETTY_FUNCTION__
))
;
2461 if (isOpenMPLoopDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()))
2462 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->loopInit();
2463}
2464
2465void Sema::startOpenMPCXXRangeFor() {
2466 assert(LangOpts.OpenMP && "OpenMP must be enabled.")(static_cast <bool> (LangOpts.OpenMP && "OpenMP must be enabled."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP must be enabled.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2466, __extension__ __PRETTY_FUNCTION__
))
;
2467 if (isOpenMPLoopDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective())) {
2468 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->resetPossibleLoopCounter();
2469 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->loopStart();
2470 }
2471}
2472
2473OpenMPClauseKind Sema::isOpenMPPrivateDecl(ValueDecl *D, unsigned Level,
2474 unsigned CapLevel) const {
2475 assert(LangOpts.OpenMP && "OpenMP is not allowed")(static_cast <bool> (LangOpts.OpenMP && "OpenMP is not allowed"
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2475, __extension__ __PRETTY_FUNCTION__
))
;
2476 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() != OMPD_unknown &&
2477 (!DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode() ||
2478 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getParentDirective() != OMPD_unknown)) {
2479 DSAStackTy::DSAVarData DVarPrivate = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasDSA(
2480 D,
2481 [](OpenMPClauseKind C, bool AppliedToPointee,
2482 DefaultDataSharingAttributes DefaultAttr) {
2483 return isOpenMPPrivate(C) && !AppliedToPointee &&
2484 DefaultAttr == DSA_private;
2485 },
2486 [](OpenMPDirectiveKind) { return true; },
2487 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode());
2488 if (DVarPrivate.CKind == OMPC_private && isa<OMPCapturedExprDecl>(D) &&
2489 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isImplicitDefaultFirstprivateFD(cast<VarDecl>(D)) &&
2490 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isLoopControlVariable(D).first)
2491 return OMPC_private;
2492 }
2493 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDirective(isOpenMPTaskingDirective, Level)) {
2494 bool IsTriviallyCopyable =
2495 D->getType().getNonReferenceType().isTriviallyCopyableType(Context) &&
2496 !D->getType()
2497 .getNonReferenceType()
2498 .getCanonicalType()
2499 ->getAsCXXRecordDecl();
2500 OpenMPDirectiveKind DKind = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDirective(Level);
2501 SmallVector<OpenMPDirectiveKind, 4> CaptureRegions;
2502 getOpenMPCaptureRegions(CaptureRegions, DKind);
2503 if (isOpenMPTaskingDirective(CaptureRegions[CapLevel]) &&
2504 (IsTriviallyCopyable ||
2505 !isOpenMPTaskLoopDirective(CaptureRegions[CapLevel]))) {
2506 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2507 D,
2508 [](OpenMPClauseKind K, bool) { return K == OMPC_firstprivate; },
2509 Level, /*NotLastprivate=*/true))
2510 return OMPC_firstprivate;
2511 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getImplicitDSA(D, Level);
2512 if (DVar.CKind != OMPC_shared &&
2513 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isLoopControlVariable(D, Level).first && !DVar.RefExpr) {
2514 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->addImplicitTaskFirstprivate(Level, D);
2515 return OMPC_firstprivate;
2516 }
2517 }
2518 }
2519 if (isOpenMPLoopDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective())) {
2520 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getAssociatedLoops() > 0 && !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isLoopStarted()) {
2521 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->resetPossibleLoopCounter(D);
2522 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->loopStart();
2523 return OMPC_private;
2524 }
2525 if ((DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getPossiblyLoopCunter() == D->getCanonicalDecl() ||
2526 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isLoopControlVariable(D).first) &&
2527 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2528 D, [](OpenMPClauseKind K, bool) { return K != OMPC_private; },
2529 Level) &&
2530 !isOpenMPSimdDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()))
2531 return OMPC_private;
2532 }
2533 if (const auto *VD = dyn_cast<VarDecl>(D)) {
2534 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isThreadPrivate(const_cast<VarDecl *>(VD)) &&
2535 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isForceVarCapturing() &&
2536 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2537 D, [](OpenMPClauseKind K, bool) { return K == OMPC_copyin; },
2538 Level))
2539 return OMPC_private;
2540 }
2541 // User-defined allocators are private since they must be defined in the
2542 // context of target region.
2543 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDirective(isOpenMPTargetExecutionDirective, Level) &&
2544 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isUsesAllocatorsDecl(Level, D).value_or(
2545 DSAStackTy::UsesAllocatorsDeclKind::AllocatorTrait) ==
2546 DSAStackTy::UsesAllocatorsDeclKind::UserDefinedAllocator)
2547 return OMPC_private;
2548 return (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2549 D, [](OpenMPClauseKind K, bool) { return K == OMPC_private; },
2550 Level) ||
2551 (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isClauseParsingMode() &&
2552 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getClauseParsingMode() == OMPC_private) ||
2553 // Consider taskgroup reduction descriptor variable a private
2554 // to avoid possible capture in the region.
2555 (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDirective(
2556 [](OpenMPDirectiveKind K) {
2557 return K == OMPD_taskgroup ||
2558 ((isOpenMPParallelDirective(K) ||
2559 isOpenMPWorksharingDirective(K)) &&
2560 !isOpenMPSimdDirective(K));
2561 },
2562 Level) &&
2563 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isTaskgroupReductionRef(D, Level)))
2564 ? OMPC_private
2565 : OMPC_unknown;
2566}
2567
2568void Sema::setOpenMPCaptureKind(FieldDecl *FD, const ValueDecl *D,
2569 unsigned Level) {
2570 assert(LangOpts.OpenMP && "OpenMP is not allowed")(static_cast <bool> (LangOpts.OpenMP && "OpenMP is not allowed"
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2570, __extension__ __PRETTY_FUNCTION__
))
;
2571 D = getCanonicalDecl(D);
2572 OpenMPClauseKind OMPC = OMPC_unknown;
2573 for (unsigned I = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getNestingLevel() + 1; I > Level; --I) {
2574 const unsigned NewLevel = I - 1;
2575 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDSA(
2576 D,
2577 [&OMPC](const OpenMPClauseKind K, bool AppliedToPointee) {
2578 if (isOpenMPPrivate(K) && !AppliedToPointee) {
2579 OMPC = K;
2580 return true;
2581 }
2582 return false;
2583 },
2584 NewLevel))
2585 break;
2586 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->checkMappableExprComponentListsForDeclAtLevel(
2587 D, NewLevel,
2588 [](OMPClauseMappableExprCommon::MappableExprComponentListRef,
2589 OpenMPClauseKind) { return true; })) {
2590 OMPC = OMPC_map;
2591 break;
2592 }
2593 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDirective(isOpenMPTargetExecutionDirective,
2594 NewLevel)) {
2595 OMPC = OMPC_map;
2596 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->mustBeFirstprivateAtLevel(
2597 NewLevel, getVariableCategoryFromDecl(LangOpts, D)))
2598 OMPC = OMPC_firstprivate;
2599 break;
2600 }
2601 }
2602 if (OMPC != OMPC_unknown)
2603 FD->addAttr(OMPCaptureKindAttr::CreateImplicit(Context, unsigned(OMPC)));
2604}
2605
2606bool Sema::isOpenMPTargetCapturedDecl(const ValueDecl *D, unsigned Level,
2607 unsigned CaptureLevel) const {
2608 assert(LangOpts.OpenMP && "OpenMP is not allowed")(static_cast <bool> (LangOpts.OpenMP && "OpenMP is not allowed"
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2608, __extension__ __PRETTY_FUNCTION__
))
;
2609 // Return true if the current level is no longer enclosed in a target region.
2610
2611 SmallVector<OpenMPDirectiveKind, 4> Regions;
2612 getOpenMPCaptureRegions(Regions, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDirective(Level));
2613 const auto *VD = dyn_cast<VarDecl>(D);
2614 return VD && !VD->hasLocalStorage() &&
2615 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasExplicitDirective(isOpenMPTargetExecutionDirective,
2616 Level) &&
2617 Regions[CaptureLevel] != OMPD_task;
2618}
2619
2620bool Sema::isOpenMPGlobalCapturedDecl(ValueDecl *D, unsigned Level,
2621 unsigned CaptureLevel) const {
2622 assert(LangOpts.OpenMP && "OpenMP is not allowed")(static_cast <bool> (LangOpts.OpenMP && "OpenMP is not allowed"
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2622, __extension__ __PRETTY_FUNCTION__
))
;
2623 // Return true if the current level is no longer enclosed in a target region.
2624
2625 if (const auto *VD = dyn_cast<VarDecl>(D)) {
2626 if (!VD->hasLocalStorage()) {
2627 if (isInOpenMPTargetExecutionDirective())
2628 return true;
2629 DSAStackTy::DSAVarData TopDVar =
2630 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getTopDSA(D, /*FromParent=*/false);
2631 unsigned NumLevels =
2632 getOpenMPCaptureLevels(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDirective(Level));
2633 if (Level == 0)
2634 // non-file scope static variale with default(firstprivate)
2635 // should be gloabal captured.
2636 return (NumLevels == CaptureLevel + 1 &&
2637 (TopDVar.CKind != OMPC_shared ||
2638 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDefaultDSA() == DSA_firstprivate));
2639 do {
2640 --Level;
2641 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getImplicitDSA(D, Level);
2642 if (DVar.CKind != OMPC_shared)
2643 return true;
2644 } while (Level > 0);
2645 }
2646 }
2647 return true;
2648}
2649
2650void Sema::DestroyDataSharingAttributesStack() { delete DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
; }
2651
2652void Sema::ActOnOpenMPBeginDeclareVariant(SourceLocation Loc,
2653 OMPTraitInfo &TI) {
2654 OMPDeclareVariantScopes.push_back(OMPDeclareVariantScope(TI));
2655}
2656
2657void Sema::ActOnOpenMPEndDeclareVariant() {
2658 assert(isInOpenMPDeclareVariantScope() &&(static_cast <bool> (isInOpenMPDeclareVariantScope() &&
"Not in OpenMP declare variant scope!") ? void (0) : __assert_fail
("isInOpenMPDeclareVariantScope() && \"Not in OpenMP declare variant scope!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2659, __extension__ __PRETTY_FUNCTION__
))
2659 "Not in OpenMP declare variant scope!")(static_cast <bool> (isInOpenMPDeclareVariantScope() &&
"Not in OpenMP declare variant scope!") ? void (0) : __assert_fail
("isInOpenMPDeclareVariantScope() && \"Not in OpenMP declare variant scope!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2659, __extension__ __PRETTY_FUNCTION__
))
;
2660
2661 OMPDeclareVariantScopes.pop_back();
2662}
2663
2664void Sema::finalizeOpenMPDelayedAnalysis(const FunctionDecl *Caller,
2665 const FunctionDecl *Callee,
2666 SourceLocation Loc) {
2667 assert(LangOpts.OpenMP && "Expected OpenMP compilation mode.")(static_cast <bool> (LangOpts.OpenMP && "Expected OpenMP compilation mode."
) ? void (0) : __assert_fail ("LangOpts.OpenMP && \"Expected OpenMP compilation mode.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2667, __extension__ __PRETTY_FUNCTION__
))
;
2668 Optional<OMPDeclareTargetDeclAttr::DevTypeTy> DevTy =
2669 OMPDeclareTargetDeclAttr::getDeviceType(Caller->getMostRecentDecl());
2670 // Ignore host functions during device analyzis.
2671 if (LangOpts.OpenMPIsDevice &&
2672 (!DevTy || *DevTy == OMPDeclareTargetDeclAttr::DT_Host))
2673 return;
2674 // Ignore nohost functions during host analyzis.
2675 if (!LangOpts.OpenMPIsDevice && DevTy &&
2676 *DevTy == OMPDeclareTargetDeclAttr::DT_NoHost)
2677 return;
2678 const FunctionDecl *FD = Callee->getMostRecentDecl();
2679 DevTy = OMPDeclareTargetDeclAttr::getDeviceType(FD);
2680 if (LangOpts.OpenMPIsDevice && DevTy &&
2681 *DevTy == OMPDeclareTargetDeclAttr::DT_Host) {
2682 // Diagnose host function called during device codegen.
2683 StringRef HostDevTy =
2684 getOpenMPSimpleClauseTypeName(OMPC_device_type, OMPC_DEVICE_TYPE_host);
2685 Diag(Loc, diag::err_omp_wrong_device_function_call) << HostDevTy << 0;
2686 Diag(*OMPDeclareTargetDeclAttr::getLocation(FD),
2687 diag::note_omp_marked_device_type_here)
2688 << HostDevTy;
2689 return;
2690 }
2691 if (!LangOpts.OpenMPIsDevice && !LangOpts.OpenMPOffloadMandatory && DevTy &&
2692 *DevTy == OMPDeclareTargetDeclAttr::DT_NoHost) {
2693 // Diagnose nohost function called during host codegen.
2694 StringRef NoHostDevTy = getOpenMPSimpleClauseTypeName(
2695 OMPC_device_type, OMPC_DEVICE_TYPE_nohost);
2696 Diag(Loc, diag::err_omp_wrong_device_function_call) << NoHostDevTy << 1;
2697 Diag(*OMPDeclareTargetDeclAttr::getLocation(FD),
2698 diag::note_omp_marked_device_type_here)
2699 << NoHostDevTy;
2700 }
2701}
2702
2703void Sema::StartOpenMPDSABlock(OpenMPDirectiveKind DKind,
2704 const DeclarationNameInfo &DirName,
2705 Scope *CurScope, SourceLocation Loc) {
2706 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->push(DKind, DirName, CurScope, Loc);
2707 PushExpressionEvaluationContext(
2708 ExpressionEvaluationContext::PotentiallyEvaluated);
2709}
2710
2711void Sema::StartOpenMPClause(OpenMPClauseKind K) {
2712 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setClauseParsingMode(K);
2713}
2714
2715void Sema::EndOpenMPClause() {
2716 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setClauseParsingMode(/*K=*/OMPC_unknown);
2717 CleanupVarDeclMarking();
2718}
2719
2720static std::pair<ValueDecl *, bool>
2721getPrivateItem(Sema &S, Expr *&RefExpr, SourceLocation &ELoc,
2722 SourceRange &ERange, bool AllowArraySection = false,
2723 StringRef DiagType = "");
2724
2725/// Check consistency of the reduction clauses.
2726static void checkReductionClauses(Sema &S, DSAStackTy *Stack,
2727 ArrayRef<OMPClause *> Clauses) {
2728 bool InscanFound = false;
2729 SourceLocation InscanLoc;
2730 // OpenMP 5.0, 2.19.5.4 reduction Clause, Restrictions.
2731 // A reduction clause without the inscan reduction-modifier may not appear on
2732 // a construct on which a reduction clause with the inscan reduction-modifier
2733 // appears.
2734 for (OMPClause *C : Clauses) {
2735 if (C->getClauseKind() != OMPC_reduction)
2736 continue;
2737 auto *RC = cast<OMPReductionClause>(C);
2738 if (RC->getModifier() == OMPC_REDUCTION_inscan) {
2739 InscanFound = true;
2740 InscanLoc = RC->getModifierLoc();
2741 continue;
2742 }
2743 if (RC->getModifier() == OMPC_REDUCTION_task) {
2744 // OpenMP 5.0, 2.19.5.4 reduction Clause.
2745 // A reduction clause with the task reduction-modifier may only appear on
2746 // a parallel construct, a worksharing construct or a combined or
2747 // composite construct for which any of the aforementioned constructs is a
2748 // constituent construct and simd or loop are not constituent constructs.
2749 OpenMPDirectiveKind CurDir = Stack->getCurrentDirective();
2750 if (!(isOpenMPParallelDirective(CurDir) ||
2751 isOpenMPWorksharingDirective(CurDir)) ||
2752 isOpenMPSimdDirective(CurDir))
2753 S.Diag(RC->getModifierLoc(),
2754 diag::err_omp_reduction_task_not_parallel_or_worksharing);
2755 continue;
2756 }
2757 }
2758 if (InscanFound) {
2759 for (OMPClause *C : Clauses) {
2760 if (C->getClauseKind() != OMPC_reduction)
2761 continue;
2762 auto *RC = cast<OMPReductionClause>(C);
2763 if (RC->getModifier() != OMPC_REDUCTION_inscan) {
2764 S.Diag(RC->getModifier() == OMPC_REDUCTION_unknown
2765 ? RC->getBeginLoc()
2766 : RC->getModifierLoc(),
2767 diag::err_omp_inscan_reduction_expected);
2768 S.Diag(InscanLoc, diag::note_omp_previous_inscan_reduction);
2769 continue;
2770 }
2771 for (Expr *Ref : RC->varlists()) {
2772 assert(Ref && "NULL expr in OpenMP nontemporal clause.")(static_cast <bool> (Ref && "NULL expr in OpenMP nontemporal clause."
) ? void (0) : __assert_fail ("Ref && \"NULL expr in OpenMP nontemporal clause.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2772, __extension__ __PRETTY_FUNCTION__
))
;
2773 SourceLocation ELoc;
2774 SourceRange ERange;
2775 Expr *SimpleRefExpr = Ref;
2776 auto Res = getPrivateItem(S, SimpleRefExpr, ELoc, ERange,
2777 /*AllowArraySection=*/true);
2778 ValueDecl *D = Res.first;
2779 if (!D)
2780 continue;
2781 if (!Stack->isUsedInScanDirective(getCanonicalDecl(D))) {
2782 S.Diag(Ref->getExprLoc(),
2783 diag::err_omp_reduction_not_inclusive_exclusive)
2784 << Ref->getSourceRange();
2785 }
2786 }
2787 }
2788 }
2789}
2790
2791static void checkAllocateClauses(Sema &S, DSAStackTy *Stack,
2792 ArrayRef<OMPClause *> Clauses);
2793static DeclRefExpr *buildCapture(Sema &S, ValueDecl *D, Expr *CaptureExpr,
2794 bool WithInit);
2795
2796static void reportOriginalDsa(Sema &SemaRef, const DSAStackTy *Stack,
2797 const ValueDecl *D,
2798 const DSAStackTy::DSAVarData &DVar,
2799 bool IsLoopIterVar = false);
2800
2801void Sema::EndOpenMPDSABlock(Stmt *CurDirective) {
2802 // OpenMP [2.14.3.5, Restrictions, C/C++, p.1]
2803 // A variable of class type (or array thereof) that appears in a lastprivate
2804 // clause requires an accessible, unambiguous default constructor for the
2805 // class type, unless the list item is also specified in a firstprivate
2806 // clause.
2807 if (const auto *D = dyn_cast_or_null<OMPExecutableDirective>(CurDirective)) {
2808 for (OMPClause *C : D->clauses()) {
2809 if (auto *Clause = dyn_cast<OMPLastprivateClause>(C)) {
2810 SmallVector<Expr *, 8> PrivateCopies;
2811 for (Expr *DE : Clause->varlists()) {
2812 if (DE->isValueDependent() || DE->isTypeDependent()) {
2813 PrivateCopies.push_back(nullptr);
2814 continue;
2815 }
2816 auto *DRE = cast<DeclRefExpr>(DE->IgnoreParens());
2817 auto *VD = cast<VarDecl>(DRE->getDecl());
2818 QualType Type = VD->getType().getNonReferenceType();
2819 const DSAStackTy::DSAVarData DVar =
2820 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getTopDSA(VD, /*FromParent=*/false);
2821 if (DVar.CKind == OMPC_lastprivate) {
2822 // Generate helper private variable and initialize it with the
2823 // default value. The address of the original variable is replaced
2824 // by the address of the new private variable in CodeGen. This new
2825 // variable is not added to IdResolver, so the code in the OpenMP
2826 // region uses original variable for proper diagnostics.
2827 VarDecl *VDPrivate = buildVarDecl(
2828 *this, DE->getExprLoc(), Type.getUnqualifiedType(),
2829 VD->getName(), VD->hasAttrs() ? &VD->getAttrs() : nullptr, DRE);
2830 ActOnUninitializedDecl(VDPrivate);
2831 if (VDPrivate->isInvalidDecl()) {
2832 PrivateCopies.push_back(nullptr);
2833 continue;
2834 }
2835 PrivateCopies.push_back(buildDeclRefExpr(
2836 *this, VDPrivate, DE->getType(), DE->getExprLoc()));
2837 } else {
2838 // The variable is also a firstprivate, so initialization sequence
2839 // for private copy is generated already.
2840 PrivateCopies.push_back(nullptr);
2841 }
2842 }
2843 Clause->setPrivateCopies(PrivateCopies);
2844 continue;
2845 }
2846 // Finalize nontemporal clause by handling private copies, if any.
2847 if (auto *Clause = dyn_cast<OMPNontemporalClause>(C)) {
2848 SmallVector<Expr *, 8> PrivateRefs;
2849 for (Expr *RefExpr : Clause->varlists()) {
2850 assert(RefExpr && "NULL expr in OpenMP nontemporal clause.")(static_cast <bool> (RefExpr && "NULL expr in OpenMP nontemporal clause."
) ? void (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP nontemporal clause.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 2850, __extension__ __PRETTY_FUNCTION__
))
;
2851 SourceLocation ELoc;
2852 SourceRange ERange;
2853 Expr *SimpleRefExpr = RefExpr;
2854 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange);
2855 if (Res.second)
2856 // It will be analyzed later.
2857 PrivateRefs.push_back(RefExpr);
2858 ValueDecl *D = Res.first;
2859 if (!D)
2860 continue;
2861
2862 const DSAStackTy::DSAVarData DVar =
2863 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getTopDSA(D, /*FromParent=*/false);
2864 PrivateRefs.push_back(DVar.PrivateCopy ? DVar.PrivateCopy
2865 : SimpleRefExpr);
2866 }
2867 Clause->setPrivateRefs(PrivateRefs);
2868 continue;
2869 }
2870 if (auto *Clause = dyn_cast<OMPUsesAllocatorsClause>(C)) {
2871 for (unsigned I = 0, E = Clause->getNumberOfAllocators(); I < E; ++I) {
2872 OMPUsesAllocatorsClause::Data D = Clause->getAllocatorData(I);
2873 auto *DRE = dyn_cast<DeclRefExpr>(D.Allocator->IgnoreParenImpCasts());
2874 if (!DRE)
2875 continue;
2876 ValueDecl *VD = DRE->getDecl();
2877 if (!VD || !isa<VarDecl>(VD))
2878 continue;
2879 DSAStackTy::DSAVarData DVar =
2880 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getTopDSA(VD, /*FromParent=*/false);
2881 // OpenMP [2.12.5, target Construct]
2882 // Memory allocators that appear in a uses_allocators clause cannot
2883 // appear in other data-sharing attribute clauses or data-mapping
2884 // attribute clauses in the same construct.
2885 Expr *MapExpr = nullptr;
2886 if (DVar.RefExpr ||
2887 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->checkMappableExprComponentListsForDecl(
2888 VD, /*CurrentRegionOnly=*/true,
2889 [VD, &MapExpr](
2890 OMPClauseMappableExprCommon::MappableExprComponentListRef
2891 MapExprComponents,
2892 OpenMPClauseKind C) {
2893 auto MI = MapExprComponents.rbegin();
2894 auto ME = MapExprComponents.rend();
2895 if (MI != ME &&
2896 MI->getAssociatedDeclaration()->getCanonicalDecl() ==
2897 VD->getCanonicalDecl()) {
2898 MapExpr = MI->getAssociatedExpression();
2899 return true;
2900 }
2901 return false;
2902 })) {
2903 Diag(D.Allocator->getExprLoc(),
2904 diag::err_omp_allocator_used_in_clauses)
2905 << D.Allocator->getSourceRange();
2906 if (DVar.RefExpr)
2907 reportOriginalDsa(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, VD, DVar);
2908 else
2909 Diag(MapExpr->getExprLoc(), diag::note_used_here)
2910 << MapExpr->getSourceRange();
2911 }
2912 }
2913 continue;
2914 }
2915 }
2916 // Check allocate clauses.
2917 if (!CurContext->isDependentContext())
2918 checkAllocateClauses(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, D->clauses());
2919 checkReductionClauses(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, D->clauses());
2920 }
2921
2922 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->pop();
2923 DiscardCleanupsInEvaluationContext();
2924 PopExpressionEvaluationContext();
2925}
2926
2927static bool FinishOpenMPLinearClause(OMPLinearClause &Clause, DeclRefExpr *IV,
2928 Expr *NumIterations, Sema &SemaRef,
2929 Scope *S, DSAStackTy *Stack);
2930
2931namespace {
2932
2933class VarDeclFilterCCC final : public CorrectionCandidateCallback {
2934private:
2935 Sema &SemaRef;
2936
2937public:
2938 explicit VarDeclFilterCCC(Sema &S) : SemaRef(S) {}
2939 bool ValidateCandidate(const TypoCorrection &Candidate) override {
2940 NamedDecl *ND = Candidate.getCorrectionDecl();
2941 if (const auto *VD = dyn_cast_or_null<VarDecl>(ND)) {
2942 return VD->hasGlobalStorage() &&
2943 SemaRef.isDeclInScope(ND, SemaRef.getCurLexicalContext(),
2944 SemaRef.getCurScope());
2945 }
2946 return false;
2947 }
2948
2949 std::unique_ptr<CorrectionCandidateCallback> clone() override {
2950 return std::make_unique<VarDeclFilterCCC>(*this);
2951 }
2952};
2953
2954class VarOrFuncDeclFilterCCC final : public CorrectionCandidateCallback {
2955private:
2956 Sema &SemaRef;
2957
2958public:
2959 explicit VarOrFuncDeclFilterCCC(Sema &S) : SemaRef(S) {}
2960 bool ValidateCandidate(const TypoCorrection &Candidate) override {
2961 NamedDecl *ND = Candidate.getCorrectionDecl();
2962 if (ND && ((isa<VarDecl>(ND) && ND->getKind() == Decl::Var) ||
2963 isa<FunctionDecl>(ND))) {
2964 return SemaRef.isDeclInScope(ND, SemaRef.getCurLexicalContext(),
2965 SemaRef.getCurScope());
2966 }
2967 return false;
2968 }
2969
2970 std::unique_ptr<CorrectionCandidateCallback> clone() override {
2971 return std::make_unique<VarOrFuncDeclFilterCCC>(*this);
2972 }
2973};
2974
2975} // namespace
2976
2977ExprResult Sema::ActOnOpenMPIdExpression(Scope *CurScope,
2978 CXXScopeSpec &ScopeSpec,
2979 const DeclarationNameInfo &Id,
2980 OpenMPDirectiveKind Kind) {
2981 LookupResult Lookup(*this, Id, LookupOrdinaryName);
2982 LookupParsedName(Lookup, CurScope, &ScopeSpec, true);
2983
2984 if (Lookup.isAmbiguous())
2985 return ExprError();
2986
2987 VarDecl *VD;
2988 if (!Lookup.isSingleResult()) {
2989 VarDeclFilterCCC CCC(*this);
2990 if (TypoCorrection Corrected =
2991 CorrectTypo(Id, LookupOrdinaryName, CurScope, nullptr, CCC,
2992 CTK_ErrorRecovery)) {
2993 diagnoseTypo(Corrected,
2994 PDiag(Lookup.empty()
2995 ? diag::err_undeclared_var_use_suggest
2996 : diag::err_omp_expected_var_arg_suggest)
2997 << Id.getName());
2998 VD = Corrected.getCorrectionDeclAs<VarDecl>();
2999 } else {
3000 Diag(Id.getLoc(), Lookup.empty() ? diag::err_undeclared_var_use
3001 : diag::err_omp_expected_var_arg)
3002 << Id.getName();
3003 return ExprError();
3004 }
3005 } else if (!(VD = Lookup.getAsSingle<VarDecl>())) {
3006 Diag(Id.getLoc(), diag::err_omp_expected_var_arg) << Id.getName();
3007 Diag(Lookup.getFoundDecl()->getLocation(), diag::note_declared_at);
3008 return ExprError();
3009 }
3010 Lookup.suppressDiagnostics();
3011
3012 // OpenMP [2.9.2, Syntax, C/C++]
3013 // Variables must be file-scope, namespace-scope, or static block-scope.
3014 if (Kind == OMPD_threadprivate && !VD->hasGlobalStorage()) {
3015 Diag(Id.getLoc(), diag::err_omp_global_var_arg)
3016 << getOpenMPDirectiveName(Kind) << !VD->isStaticLocal();
3017 bool IsDecl =
3018 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3019 Diag(VD->getLocation(),
3020 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3021 << VD;
3022 return ExprError();
3023 }
3024
3025 VarDecl *CanonicalVD = VD->getCanonicalDecl();
3026 NamedDecl *ND = CanonicalVD;
3027 // OpenMP [2.9.2, Restrictions, C/C++, p.2]
3028 // A threadprivate directive for file-scope variables must appear outside
3029 // any definition or declaration.
3030 if (CanonicalVD->getDeclContext()->isTranslationUnit() &&
3031 !getCurLexicalContext()->isTranslationUnit()) {
3032 Diag(Id.getLoc(), diag::err_omp_var_scope)
3033 << getOpenMPDirectiveName(Kind) << VD;
3034 bool IsDecl =
3035 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3036 Diag(VD->getLocation(),
3037 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3038 << VD;
3039 return ExprError();
3040 }
3041 // OpenMP [2.9.2, Restrictions, C/C++, p.3]
3042 // A threadprivate directive for static class member variables must appear
3043 // in the class definition, in the same scope in which the member
3044 // variables are declared.
3045 if (CanonicalVD->isStaticDataMember() &&
3046 !CanonicalVD->getDeclContext()->Equals(getCurLexicalContext())) {
3047 Diag(Id.getLoc(), diag::err_omp_var_scope)
3048 << getOpenMPDirectiveName(Kind) << VD;
3049 bool IsDecl =
3050 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3051 Diag(VD->getLocation(),
3052 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3053 << VD;
3054 return ExprError();
3055 }
3056 // OpenMP [2.9.2, Restrictions, C/C++, p.4]
3057 // A threadprivate directive for namespace-scope variables must appear
3058 // outside any definition or declaration other than the namespace
3059 // definition itself.
3060 if (CanonicalVD->getDeclContext()->isNamespace() &&
3061 (!getCurLexicalContext()->isFileContext() ||
3062 !getCurLexicalContext()->Encloses(CanonicalVD->getDeclContext()))) {
3063 Diag(Id.getLoc(), diag::err_omp_var_scope)
3064 << getOpenMPDirectiveName(Kind) << VD;
3065 bool IsDecl =
3066 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3067 Diag(VD->getLocation(),
3068 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3069 << VD;
3070 return ExprError();
3071 }
3072 // OpenMP [2.9.2, Restrictions, C/C++, p.6]
3073 // A threadprivate directive for static block-scope variables must appear
3074 // in the scope of the variable and not in a nested scope.
3075 if (CanonicalVD->isLocalVarDecl() && CurScope &&
3076 !isDeclInScope(ND, getCurLexicalContext(), CurScope)) {
3077 Diag(Id.getLoc(), diag::err_omp_var_scope)
3078 << getOpenMPDirectiveName(Kind) << VD;
3079 bool IsDecl =
3080 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3081 Diag(VD->getLocation(),
3082 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3083 << VD;
3084 return ExprError();
3085 }
3086
3087 // OpenMP [2.9.2, Restrictions, C/C++, p.2-6]
3088 // A threadprivate directive must lexically precede all references to any
3089 // of the variables in its list.
3090 if (Kind == OMPD_threadprivate && VD->isUsed() &&
3091 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isThreadPrivate(VD)) {
3092 Diag(Id.getLoc(), diag::err_omp_var_used)
3093 << getOpenMPDirectiveName(Kind) << VD;
3094 return ExprError();
3095 }
3096
3097 QualType ExprType = VD->getType().getNonReferenceType();
3098 return DeclRefExpr::Create(Context, NestedNameSpecifierLoc(),
3099 SourceLocation(), VD,
3100 /*RefersToEnclosingVariableOrCapture=*/false,
3101 Id.getLoc(), ExprType, VK_LValue);
3102}
3103
3104Sema::DeclGroupPtrTy
3105Sema::ActOnOpenMPThreadprivateDirective(SourceLocation Loc,
3106 ArrayRef<Expr *> VarList) {
3107 if (OMPThreadPrivateDecl *D = CheckOMPThreadPrivateDecl(Loc, VarList)) {
3108 CurContext->addDecl(D);
3109 return DeclGroupPtrTy::make(DeclGroupRef(D));
3110 }
3111 return nullptr;
3112}
3113
3114namespace {
3115class LocalVarRefChecker final
3116 : public ConstStmtVisitor<LocalVarRefChecker, bool> {
3117 Sema &SemaRef;
3118
3119public:
3120 bool VisitDeclRefExpr(const DeclRefExpr *E) {
3121 if (const auto *VD = dyn_cast<VarDecl>(E->getDecl())) {
3122 if (VD->hasLocalStorage()) {
3123 SemaRef.Diag(E->getBeginLoc(),
3124 diag::err_omp_local_var_in_threadprivate_init)
3125 << E->getSourceRange();
3126 SemaRef.Diag(VD->getLocation(), diag::note_defined_here)
3127 << VD << VD->getSourceRange();
3128 return true;
3129 }
3130 }
3131 return false;
3132 }
3133 bool VisitStmt(const Stmt *S) {
3134 for (const Stmt *Child : S->children()) {
3135 if (Child && Visit(Child))
3136 return true;
3137 }
3138 return false;
3139 }
3140 explicit LocalVarRefChecker(Sema &SemaRef) : SemaRef(SemaRef) {}
3141};
3142} // namespace
3143
3144OMPThreadPrivateDecl *
3145Sema::CheckOMPThreadPrivateDecl(SourceLocation Loc, ArrayRef<Expr *> VarList) {
3146 SmallVector<Expr *, 8> Vars;
3147 for (Expr *RefExpr : VarList) {
3148 auto *DE = cast<DeclRefExpr>(RefExpr);
3149 auto *VD = cast<VarDecl>(DE->getDecl());
3150 SourceLocation ILoc = DE->getExprLoc();
3151
3152 // Mark variable as used.
3153 VD->setReferenced();
3154 VD->markUsed(Context);
3155
3156 QualType QType = VD->getType();
3157 if (QType->isDependentType() || QType->isInstantiationDependentType()) {
3158 // It will be analyzed later.
3159 Vars.push_back(DE);
3160 continue;
3161 }
3162
3163 // OpenMP [2.9.2, Restrictions, C/C++, p.10]
3164 // A threadprivate variable must not have an incomplete type.
3165 if (RequireCompleteType(ILoc, VD->getType(),
3166 diag::err_omp_threadprivate_incomplete_type)) {
3167 continue;
3168 }
3169
3170 // OpenMP [2.9.2, Restrictions, C/C++, p.10]
3171 // A threadprivate variable must not have a reference type.
3172 if (VD->getType()->isReferenceType()) {
3173 Diag(ILoc, diag::err_omp_ref_type_arg)
3174 << getOpenMPDirectiveName(OMPD_threadprivate) << VD->getType();
3175 bool IsDecl =
3176 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3177 Diag(VD->getLocation(),
3178 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3179 << VD;
3180 continue;
3181 }
3182
3183 // Check if this is a TLS variable. If TLS is not being supported, produce
3184 // the corresponding diagnostic.
3185 if ((VD->getTLSKind() != VarDecl::TLS_None &&
3186 !(VD->hasAttr<OMPThreadPrivateDeclAttr>() &&
3187 getLangOpts().OpenMPUseTLS &&
3188 getASTContext().getTargetInfo().isTLSSupported())) ||
3189 (VD->getStorageClass() == SC_Register && VD->hasAttr<AsmLabelAttr>() &&
3190 !VD->isLocalVarDecl())) {
3191 Diag(ILoc, diag::err_omp_var_thread_local)
3192 << VD << ((VD->getTLSKind() != VarDecl::TLS_None) ? 0 : 1);
3193 bool IsDecl =
3194 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
3195 Diag(VD->getLocation(),
3196 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3197 << VD;
3198 continue;
3199 }
3200
3201 // Check if initial value of threadprivate variable reference variable with
3202 // local storage (it is not supported by runtime).
3203 if (const Expr *Init = VD->getAnyInitializer()) {
3204 LocalVarRefChecker Checker(*this);
3205 if (Checker.Visit(Init))
3206 continue;
3207 }
3208
3209 Vars.push_back(RefExpr);
3210 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->addDSA(VD, DE, OMPC_threadprivate);
3211 VD->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(
3212 Context, SourceRange(Loc, Loc)));
3213 if (ASTMutationListener *ML = Context.getASTMutationListener())
3214 ML->DeclarationMarkedOpenMPThreadPrivate(VD);
3215 }
3216 OMPThreadPrivateDecl *D = nullptr;
3217 if (!Vars.empty()) {
3218 D = OMPThreadPrivateDecl::Create(Context, getCurLexicalContext(), Loc,
3219 Vars);
3220 D->setAccess(AS_public);
3221 }
3222 return D;
3223}
3224
3225static OMPAllocateDeclAttr::AllocatorTypeTy
3226getAllocatorKind(Sema &S, DSAStackTy *Stack, Expr *Allocator) {
3227 if (!Allocator)
3228 return OMPAllocateDeclAttr::OMPNullMemAlloc;
3229 if (Allocator->isTypeDependent() || Allocator->isValueDependent() ||
3230 Allocator->isInstantiationDependent() ||
3231 Allocator->containsUnexpandedParameterPack())
3232 return OMPAllocateDeclAttr::OMPUserDefinedMemAlloc;
3233 auto AllocatorKindRes = OMPAllocateDeclAttr::OMPUserDefinedMemAlloc;
3234 const Expr *AE = Allocator->IgnoreParenImpCasts();
3235 for (int I = 0; I < OMPAllocateDeclAttr::OMPUserDefinedMemAlloc; ++I) {
3236 auto AllocatorKind = static_cast<OMPAllocateDeclAttr::AllocatorTypeTy>(I);
3237 const Expr *DefAllocator = Stack->getAllocator(AllocatorKind);
3238 llvm::FoldingSetNodeID AEId, DAEId;
3239 AE->Profile(AEId, S.getASTContext(), /*Canonical=*/true);
3240 DefAllocator->Profile(DAEId, S.getASTContext(), /*Canonical=*/true);
3241 if (AEId == DAEId) {
3242 AllocatorKindRes = AllocatorKind;
3243 break;
3244 }
3245 }
3246 return AllocatorKindRes;
3247}
3248
3249static bool checkPreviousOMPAllocateAttribute(
3250 Sema &S, DSAStackTy *Stack, Expr *RefExpr, VarDecl *VD,
3251 OMPAllocateDeclAttr::AllocatorTypeTy AllocatorKind, Expr *Allocator) {
3252 if (!VD->hasAttr<OMPAllocateDeclAttr>())
3253 return false;
3254 const auto *A = VD->getAttr<OMPAllocateDeclAttr>();
3255 Expr *PrevAllocator = A->getAllocator();
3256 OMPAllocateDeclAttr::AllocatorTypeTy PrevAllocatorKind =
3257 getAllocatorKind(S, Stack, PrevAllocator);
3258 bool AllocatorsMatch = AllocatorKind == PrevAllocatorKind;
3259 if (AllocatorsMatch &&
3260 AllocatorKind == OMPAllocateDeclAttr::OMPUserDefinedMemAlloc &&
3261 Allocator && PrevAllocator) {
3262 const Expr *AE = Allocator->IgnoreParenImpCasts();
3263 const Expr *PAE = PrevAllocator->IgnoreParenImpCasts();
3264 llvm::FoldingSetNodeID AEId, PAEId;
3265 AE->Profile(AEId, S.Context, /*Canonical=*/true);
3266 PAE->Profile(PAEId, S.Context, /*Canonical=*/true);
3267 AllocatorsMatch = AEId == PAEId;
3268 }
3269 if (!AllocatorsMatch) {
3270 SmallString<256> AllocatorBuffer;
3271 llvm::raw_svector_ostream AllocatorStream(AllocatorBuffer);
3272 if (Allocator)
3273 Allocator->printPretty(AllocatorStream, nullptr, S.getPrintingPolicy());
3274 SmallString<256> PrevAllocatorBuffer;
3275 llvm::raw_svector_ostream PrevAllocatorStream(PrevAllocatorBuffer);
3276 if (PrevAllocator)
3277 PrevAllocator->printPretty(PrevAllocatorStream, nullptr,
3278 S.getPrintingPolicy());
3279
3280 SourceLocation AllocatorLoc =
3281 Allocator ? Allocator->getExprLoc() : RefExpr->getExprLoc();
3282 SourceRange AllocatorRange =
3283 Allocator ? Allocator->getSourceRange() : RefExpr->getSourceRange();
3284 SourceLocation PrevAllocatorLoc =
3285 PrevAllocator ? PrevAllocator->getExprLoc() : A->getLocation();
3286 SourceRange PrevAllocatorRange =
3287 PrevAllocator ? PrevAllocator->getSourceRange() : A->getRange();
3288 S.Diag(AllocatorLoc, diag::warn_omp_used_different_allocator)
3289 << (Allocator ? 1 : 0) << AllocatorStream.str()
3290 << (PrevAllocator ? 1 : 0) << PrevAllocatorStream.str()
3291 << AllocatorRange;
3292 S.Diag(PrevAllocatorLoc, diag::note_omp_previous_allocator)
3293 << PrevAllocatorRange;
3294 return true;
3295 }
3296 return false;
3297}
3298
3299static void
3300applyOMPAllocateAttribute(Sema &S, VarDecl *VD,
3301 OMPAllocateDeclAttr::AllocatorTypeTy AllocatorKind,
3302 Expr *Allocator, Expr *Alignment, SourceRange SR) {
3303 if (VD->hasAttr<OMPAllocateDeclAttr>())
3304 return;
3305 if (Alignment &&
3306 (Alignment->isTypeDependent() || Alignment->isValueDependent() ||
3307 Alignment->isInstantiationDependent() ||
3308 Alignment->containsUnexpandedParameterPack()))
3309 // Apply later when we have a usable value.
3310 return;
3311 if (Allocator &&
3312 (Allocator->isTypeDependent() || Allocator->isValueDependent() ||
3313 Allocator->isInstantiationDependent() ||
3314 Allocator->containsUnexpandedParameterPack()))
3315 return;
3316 auto *A = OMPAllocateDeclAttr::CreateImplicit(S.Context, AllocatorKind,
3317 Allocator, Alignment, SR);
3318 VD->addAttr(A);
3319 if (ASTMutationListener *ML = S.Context.getASTMutationListener())
3320 ML->DeclarationMarkedOpenMPAllocate(VD, A);
3321}
3322
3323Sema::DeclGroupPtrTy
3324Sema::ActOnOpenMPAllocateDirective(SourceLocation Loc, ArrayRef<Expr *> VarList,
3325 ArrayRef<OMPClause *> Clauses,
3326 DeclContext *Owner) {
3327 assert(Clauses.size() <= 2 && "Expected at most two clauses.")(static_cast <bool> (Clauses.size() <= 2 && "Expected at most two clauses."
) ? void (0) : __assert_fail ("Clauses.size() <= 2 && \"Expected at most two clauses.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 3327, __extension__ __PRETTY_FUNCTION__
))
;
3328 Expr *Alignment = nullptr;
3329 Expr *Allocator = nullptr;
3330 if (Clauses.empty()) {
3331 // OpenMP 5.0, 2.11.3 allocate Directive, Restrictions.
3332 // allocate directives that appear in a target region must specify an
3333 // allocator clause unless a requires directive with the dynamic_allocators
3334 // clause is present in the same compilation unit.
3335 if (LangOpts.OpenMPIsDevice &&
3336 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasRequiresDeclWithClause<OMPDynamicAllocatorsClause>())
3337 targetDiag(Loc, diag::err_expected_allocator_clause);
3338 } else {
3339 for (const OMPClause *C : Clauses)
3340 if (const auto *AC = dyn_cast<OMPAllocatorClause>(C))
3341 Allocator = AC->getAllocator();
3342 else if (const auto *AC = dyn_cast<OMPAlignClause>(C))
3343 Alignment = AC->getAlignment();
3344 else
3345 llvm_unreachable("Unexpected clause on allocate directive")::llvm::llvm_unreachable_internal("Unexpected clause on allocate directive"
, "clang/lib/Sema/SemaOpenMP.cpp", 3345)
;
3346 }
3347 OMPAllocateDeclAttr::AllocatorTypeTy AllocatorKind =
3348 getAllocatorKind(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, Allocator);
3349 SmallVector<Expr *, 8> Vars;
3350 for (Expr *RefExpr : VarList) {
3351 auto *DE = cast<DeclRefExpr>(RefExpr);
3352 auto *VD = cast<VarDecl>(DE->getDecl());
3353
3354 // Check if this is a TLS variable or global register.
3355 if (VD->getTLSKind() != VarDecl::TLS_None ||
3356 VD->hasAttr<OMPThreadPrivateDeclAttr>() ||
3357 (VD->getStorageClass() == SC_Register && VD->hasAttr<AsmLabelAttr>() &&
3358 !VD->isLocalVarDecl()))
3359 continue;
3360
3361 // If the used several times in the allocate directive, the same allocator
3362 // must be used.
3363 if (checkPreviousOMPAllocateAttribute(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, RefExpr, VD,
3364 AllocatorKind, Allocator))
3365 continue;
3366
3367 // OpenMP, 2.11.3 allocate Directive, Restrictions, C / C++
3368 // If a list item has a static storage type, the allocator expression in the
3369 // allocator clause must be a constant expression that evaluates to one of
3370 // the predefined memory allocator values.
3371 if (Allocator && VD->hasGlobalStorage()) {
3372 if (AllocatorKind == OMPAllocateDeclAttr::OMPUserDefinedMemAlloc) {
3373 Diag(Allocator->getExprLoc(),
3374 diag::err_omp_expected_predefined_allocator)
3375 << Allocator->getSourceRange();
3376 bool IsDecl = VD->isThisDeclarationADefinition(Context) ==
3377 VarDecl::DeclarationOnly;
3378 Diag(VD->getLocation(),
3379 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
3380 << VD;
3381 continue;
3382 }
3383 }
3384
3385 Vars.push_back(RefExpr);
3386 applyOMPAllocateAttribute(*this, VD, AllocatorKind, Allocator, Alignment,
3387 DE->getSourceRange());
3388 }
3389 if (Vars.empty())
3390 return nullptr;
3391 if (!Owner)
3392 Owner = getCurLexicalContext();
3393 auto *D = OMPAllocateDecl::Create(Context, Owner, Loc, Vars, Clauses);
3394 D->setAccess(AS_public);
3395 Owner->addDecl(D);
3396 return DeclGroupPtrTy::make(DeclGroupRef(D));
3397}
3398
3399Sema::DeclGroupPtrTy
3400Sema::ActOnOpenMPRequiresDirective(SourceLocation Loc,
3401 ArrayRef<OMPClause *> ClauseList) {
3402 OMPRequiresDecl *D = nullptr;
3403 if (!CurContext->isFileContext()) {
3404 Diag(Loc, diag::err_omp_invalid_scope) << "requires";
3405 } else {
3406 D = CheckOMPRequiresDecl(Loc, ClauseList);
3407 if (D) {
3408 CurContext->addDecl(D);
3409 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->addRequiresDecl(D);
3410 }
3411 }
3412 return DeclGroupPtrTy::make(DeclGroupRef(D));
3413}
3414
3415void Sema::ActOnOpenMPAssumesDirective(SourceLocation Loc,
3416 OpenMPDirectiveKind DKind,
3417 ArrayRef<std::string> Assumptions,
3418 bool SkippedClauses) {
3419 if (!SkippedClauses && Assumptions.empty())
3420 Diag(Loc, diag::err_omp_no_clause_for_directive)
3421 << llvm::omp::getAllAssumeClauseOptions()
3422 << llvm::omp::getOpenMPDirectiveName(DKind);
3423
3424 auto *AA = AssumptionAttr::Create(Context, llvm::join(Assumptions, ","), Loc);
3425 if (DKind == llvm::omp::Directive::OMPD_begin_assumes) {
3426 OMPAssumeScoped.push_back(AA);
3427 return;
3428 }
3429
3430 // Global assumes without assumption clauses are ignored.
3431 if (Assumptions.empty())
3432 return;
3433
3434 assert(DKind == llvm::omp::Directive::OMPD_assumes &&(static_cast <bool> (DKind == llvm::omp::Directive::OMPD_assumes
&& "Unexpected omp assumption directive!") ? void (0
) : __assert_fail ("DKind == llvm::omp::Directive::OMPD_assumes && \"Unexpected omp assumption directive!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 3435, __extension__ __PRETTY_FUNCTION__
))
3435 "Unexpected omp assumption directive!")(static_cast <bool> (DKind == llvm::omp::Directive::OMPD_assumes
&& "Unexpected omp assumption directive!") ? void (0
) : __assert_fail ("DKind == llvm::omp::Directive::OMPD_assumes && \"Unexpected omp assumption directive!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 3435, __extension__ __PRETTY_FUNCTION__
))
;
3436 OMPAssumeGlobal.push_back(AA);
3437
3438 // The OMPAssumeGlobal scope above will take care of new declarations but
3439 // we also want to apply the assumption to existing ones, e.g., to
3440 // declarations in included headers. To this end, we traverse all existing
3441 // declaration contexts and annotate function declarations here.
3442 SmallVector<DeclContext *, 8> DeclContexts;
3443 auto *Ctx = CurContext;
3444 while (Ctx->getLexicalParent())
3445 Ctx = Ctx->getLexicalParent();
3446 DeclContexts.push_back(Ctx);
3447 while (!DeclContexts.empty()) {
3448 DeclContext *DC = DeclContexts.pop_back_val();
3449 for (auto *SubDC : DC->decls()) {
3450 if (SubDC->isInvalidDecl())
3451 continue;
3452 if (auto *CTD = dyn_cast<ClassTemplateDecl>(SubDC)) {
3453 DeclContexts.push_back(CTD->getTemplatedDecl());
3454 llvm::append_range(DeclContexts, CTD->specializations());
3455 continue;
3456 }
3457 if (auto *DC = dyn_cast<DeclContext>(SubDC))
3458 DeclContexts.push_back(DC);
3459 if (auto *F = dyn_cast<FunctionDecl>(SubDC)) {
3460 F->addAttr(AA);
3461 continue;
3462 }
3463 }
3464 }
3465}
3466
3467void Sema::ActOnOpenMPEndAssumesDirective() {
3468 assert(isInOpenMPAssumeScope() && "Not in OpenMP assumes scope!")(static_cast <bool> (isInOpenMPAssumeScope() &&
"Not in OpenMP assumes scope!") ? void (0) : __assert_fail (
"isInOpenMPAssumeScope() && \"Not in OpenMP assumes scope!\""
, "clang/lib/Sema/SemaOpenMP.cpp", 3468, __extension__ __PRETTY_FUNCTION__
))
;
3469 OMPAssumeScoped.pop_back();
3470}
3471
3472OMPRequiresDecl *Sema::CheckOMPRequiresDecl(SourceLocation Loc,
3473 ArrayRef<OMPClause *> ClauseList) {
3474 /// For target specific clauses, the requires directive cannot be
3475 /// specified after the handling of any of the target regions in the
3476 /// current compilation unit.
3477 ArrayRef<SourceLocation> TargetLocations =
3478 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getEncounteredTargetLocs();
3479 SourceLocation AtomicLoc = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getAtomicDirectiveLoc();
3480 if (!TargetLocations.empty() || !AtomicLoc.isInvalid()) {
3481 for (const OMPClause *CNew : ClauseList) {
3482 // Check if any of the requires clauses affect target regions.
3483 if (isa<OMPUnifiedSharedMemoryClause>(CNew) ||
3484 isa<OMPUnifiedAddressClause>(CNew) ||
3485 isa<OMPReverseOffloadClause>(CNew) ||
3486 isa<OMPDynamicAllocatorsClause>(CNew)) {
3487 Diag(Loc, diag::err_omp_directive_before_requires)
3488 << "target" << getOpenMPClauseName(CNew->getClauseKind());
3489 for (SourceLocation TargetLoc : TargetLocations) {
3490 Diag(TargetLoc, diag::note_omp_requires_encountered_directive)
3491 << "target";
3492 }
3493 } else if (!AtomicLoc.isInvalid() &&
3494 isa<OMPAtomicDefaultMemOrderClause>(CNew)) {
3495 Diag(Loc, diag::err_omp_directive_before_requires)
3496 << "atomic" << getOpenMPClauseName(CNew->getClauseKind());
3497 Diag(AtomicLoc, diag::note_omp_requires_encountered_directive)
3498 << "atomic";
3499 }
3500 }
3501 }
3502
3503 if (!DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->hasDuplicateRequiresClause(ClauseList))
3504 return OMPRequiresDecl::Create(Context, getCurLexicalContext(), Loc,
3505 ClauseList);
3506 return nullptr;
3507}
3508
3509static void reportOriginalDsa(Sema &SemaRef, const DSAStackTy *Stack,
3510 const ValueDecl *D,
3511 const DSAStackTy::DSAVarData &DVar,
3512 bool IsLoopIterVar) {
3513 if (DVar.RefExpr) {
3514 SemaRef.Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa)
3515 << getOpenMPClauseName(DVar.CKind);
3516 return;
3517 }
3518 enum {
3519 PDSA_StaticMemberShared,
3520 PDSA_StaticLocalVarShared,
3521 PDSA_LoopIterVarPrivate,
3522 PDSA_LoopIterVarLinear,
3523 PDSA_LoopIterVarLastprivate,
3524 PDSA_ConstVarShared,
3525 PDSA_GlobalVarShared,
3526 PDSA_TaskVarFirstprivate,
3527 PDSA_LocalVarPrivate,
3528 PDSA_Implicit
3529 } Reason = PDSA_Implicit;
3530 bool ReportHint = false;
3531 auto ReportLoc = D->getLocation();
3532 auto *VD = dyn_cast<VarDecl>(D);
3533 if (IsLoopIterVar) {
3534 if (DVar.CKind == OMPC_private)
3535 Reason = PDSA_LoopIterVarPrivate;
3536 else if (DVar.CKind == OMPC_lastprivate)
3537 Reason = PDSA_LoopIterVarLastprivate;
3538 else
3539 Reason = PDSA_LoopIterVarLinear;
3540 } else if (isOpenMPTaskingDirective(DVar.DKind) &&
3541 DVar.CKind == OMPC_firstprivate) {
3542 Reason = PDSA_TaskVarFirstprivate;
3543 ReportLoc = DVar.ImplicitDSALoc;
3544 } else if (VD && VD->isStaticLocal())
3545 Reason = PDSA_StaticLocalVarShared;
3546 else if (VD && VD->isStaticDataMember())
3547 Reason = PDSA_StaticMemberShared;
3548 else if (VD && VD->isFileVarDecl())
3549 Reason = PDSA_GlobalVarShared;
3550 else if (D->getType().isConstant(SemaRef.getASTContext()))
3551 Reason = PDSA_ConstVarShared;
3552 else if (VD && VD->isLocalVarDecl() && DVar.CKind == OMPC_private) {
3553 ReportHint = true;
3554 Reason = PDSA_LocalVarPrivate;
3555 }
3556 if (Reason != PDSA_Implicit) {
3557 SemaRef.Diag(ReportLoc, diag::note_omp_predetermined_dsa)
3558 << Reason << ReportHint
3559 << getOpenMPDirectiveName(Stack->getCurrentDirective());
3560 } else if (DVar.ImplicitDSALoc.isValid()) {
3561 SemaRef.Diag(DVar.ImplicitDSALoc, diag::note_omp_implicit_dsa)
3562 << getOpenMPClauseName(DVar.CKind);
3563 }
3564}
3565
3566static OpenMPMapClauseKind
3567getMapClauseKindFromModifier(OpenMPDefaultmapClauseModifier M,
3568 bool IsAggregateOrDeclareTarget) {
3569 OpenMPMapClauseKind Kind = OMPC_MAP_unknown;
3570 switch (M) {
3571 case OMPC_DEFAULTMAP_MODIFIER_alloc:
3572 Kind = OMPC_MAP_alloc;
3573 break;
3574 case OMPC_DEFAULTMAP_MODIFIER_to:
3575 Kind = OMPC_MAP_to;
3576 break;
3577 case OMPC_DEFAULTMAP_MODIFIER_from:
3578 Kind = OMPC_MAP_from;
3579 break;
3580 case OMPC_DEFAULTMAP_MODIFIER_tofrom:
3581 Kind = OMPC_MAP_tofrom;
3582 break;
3583 case OMPC_DEFAULTMAP_MODIFIER_present:
3584 // OpenMP 5.1 [2.21.7.3] defaultmap clause, Description]
3585 // If implicit-behavior is present, each variable referenced in the
3586 // construct in the category specified by variable-category is treated as if
3587 // it had been listed in a map clause with the map-type of alloc and
3588 // map-type-modifier of present.
3589 Kind = OMPC_MAP_alloc;
3590 break;
3591 case OMPC_DEFAULTMAP_MODIFIER_firstprivate:
3592 case OMPC_DEFAULTMAP_MODIFIER_last:
3593 llvm_unreachable("Unexpected defaultmap implicit behavior")::llvm::llvm_unreachable_internal("Unexpected defaultmap implicit behavior"
, "clang/lib/Sema/SemaOpenMP.cpp", 3593)
;
3594 case OMPC_DEFAULTMAP_MODIFIER_none:
3595 case OMPC_DEFAULTMAP_MODIFIER_default:
3596 case OMPC_DEFAULTMAP_MODIFIER_unknown:
3597 // IsAggregateOrDeclareTarget could be true if:
3598 // 1. the implicit behavior for aggregate is tofrom
3599 // 2. it's a declare target link
3600 if (IsAggregateOrDeclareTarget) {
3601 Kind = OMPC_MAP_tofrom;
3602 break;
3603 }
3604 llvm_unreachable("Unexpected defaultmap implicit behavior")::llvm::llvm_unreachable_internal("Unexpected defaultmap implicit behavior"
, "clang/lib/Sema/SemaOpenMP.cpp", 3604)
;
3605 }
3606 assert(Kind != OMPC_MAP_unknown && "Expect map kind to be known")(static_cast <bool> (Kind != OMPC_MAP_unknown &&
"Expect map kind to be known") ? void (0) : __assert_fail ("Kind != OMPC_MAP_unknown && \"Expect map kind to be known\""
, "clang/lib/Sema/SemaOpenMP.cpp", 3606, __extension__ __PRETTY_FUNCTION__
))
;
3607 return Kind;
3608}
3609
3610namespace {
3611class DSAAttrChecker final : public StmtVisitor<DSAAttrChecker, void> {
3612 DSAStackTy *Stack;
3613 Sema &SemaRef;
3614 bool ErrorFound = false;
3615 bool TryCaptureCXXThisMembers = false;
3616 CapturedStmt *CS = nullptr;
3617 const static unsigned DefaultmapKindNum = OMPC_DEFAULTMAP_pointer + 1;
3618 llvm::SmallVector<Expr *, 4> ImplicitFirstprivate;
3619 llvm::SmallVector<Expr *, 4> ImplicitPrivate;
3620 llvm::SmallVector<Expr *, 4> ImplicitMap[DefaultmapKindNum][OMPC_MAP_delete];
3621 llvm::SmallVector<OpenMPMapModifierKind, NumberOfOMPMapClauseModifiers>
3622 ImplicitMapModifier[DefaultmapKindNum];
3623 Sema::VarsWithInheritedDSAType VarsWithInheritedDSA;
3624 llvm::SmallDenseSet<const ValueDecl *, 4> ImplicitDeclarations;
3625
3626 void VisitSubCaptures(OMPExecutableDirective *S) {
3627 // Check implicitly captured variables.
3628 if (!S->hasAssociatedStmt() || !S->getAssociatedStmt())
3629 return;
3630 if (S->getDirectiveKind() == OMPD_atomic ||
3631 S->getDirectiveKind() == OMPD_critical ||
3632 S->getDirectiveKind() == OMPD_section ||
3633 S->getDirectiveKind() == OMPD_master ||
3634 S->getDirectiveKind() == OMPD_masked ||
3635 isOpenMPLoopTransformationDirective(S->getDirectiveKind())) {
3636 Visit(S->getAssociatedStmt());
3637 return;
3638 }
3639 visitSubCaptures(S->getInnermostCapturedStmt());
3640 // Try to capture inner this->member references to generate correct mappings
3641 // and diagnostics.
3642 if (TryCaptureCXXThisMembers ||
3643 (isOpenMPTargetExecutionDirective(Stack->getCurrentDirective()) &&
3644 llvm::any_of(S->getInnermostCapturedStmt()->captures(),
3645 [](const CapturedStmt::Capture &C) {
3646 return C.capturesThis();
3647 }))) {
3648 bool SavedTryCaptureCXXThisMembers = TryCaptureCXXThisMembers;
3649 TryCaptureCXXThisMembers = true;
3650 Visit(S->getInnermostCapturedStmt()->getCapturedStmt());
3651 TryCaptureCXXThisMembers = SavedTryCaptureCXXThisMembers;
3652 }
3653 // In tasks firstprivates are not captured anymore, need to analyze them
3654 // explicitly.
3655 if (isOpenMPTaskingDirective(S->getDirectiveKind()) &&
3656 !isOpenMPTaskLoopDirective(S->getDirectiveKind())) {
3657 for (OMPClause *C : S->clauses())
3658 if (auto *FC = dyn_cast<OMPFirstprivateClause>(C)) {
3659 for (Expr *Ref : FC->varlists())
3660 Visit(Ref);
3661 }
3662 }
3663 }
3664
3665public:
3666 void VisitDeclRefExpr(DeclRefExpr *E) {
3667 if (TryCaptureCXXThisMembers || E->isTypeDependent() ||
3668 E->isValueDependent() || E->containsUnexpandedParameterPack() ||
3669 E->isInstantiationDependent())
3670 return;
3671 if (auto *VD = dyn_cast<VarDecl>(E->getDecl())) {
3672 // Check the datasharing rules for the expressions in the clauses.
3673 if (!CS || (isa<OMPCapturedExprDecl>(VD) && !CS->capturesVariable(VD) &&
3674 !Stack->getTopDSA(VD, /*FromParent=*/false).RefExpr &&
3675 !Stack->isImplicitDefaultFirstprivateFD(VD))) {
3676 if (auto *CED = dyn_cast<OMPCapturedExprDecl>(VD))
3677 if (!CED->hasAttr<OMPCaptureNoInitAttr>()) {
3678 Visit(CED->getInit());
3679 return;
3680 }
3681 } else if (VD->isImplicit() || isa<OMPCapturedExprDecl>(VD))
3682 // Do not analyze internal variables and do not enclose them into
3683 // implicit clauses.
3684 if (!Stack->isImplicitDefaultFirstprivateFD(VD))
3685 return;
3686 VD = VD->getCanonicalDecl();
3687 // Skip internally declared variables.
3688 if (VD->hasLocalStorage() && CS && !CS->capturesVariable(VD) &&
3689 !Stack->isImplicitDefaultFirstprivateFD(VD) &&
3690 !Stack->isImplicitTaskFirstprivate(VD))
3691 return;
3692 // Skip allocators in uses_allocators clauses.
3693 if (Stack->isUsesAllocatorsDecl(VD))
3694 return;
3695
3696 DSAStackTy::DSAVarData DVar = Stack->getTopDSA(VD, /*FromParent=*/false);
3697 // Check if the variable has explicit DSA set and stop analysis if it so.
3698 if (DVar.RefExpr || !ImplicitDeclarations.insert(VD).second)
3699 return;
3700
3701 // Skip internally declared static variables.
3702 llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res =
3703 OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD);
3704 if (VD->hasGlobalStorage() && CS && !CS->capturesVariable(VD) &&
3705 (Stack->hasRequiresDeclWithClause<OMPUnifiedSharedMemoryClause>() ||
3706 !Res || *Res != OMPDeclareTargetDeclAttr::MT_Link) &&
3707 !Stack->isImplicitDefaultFirstprivateFD(VD) &&
3708 !Stack->isImplicitTaskFirstprivate(VD))
3709 return;
3710
3711 SourceLocation ELoc = E->getExprLoc();
3712 OpenMPDirectiveKind DKind = Stack->getCurrentDirective();
3713 // The default(none) clause requires that each variable that is referenced
3714 // in the construct, and does not have a predetermined data-sharing
3715 // attribute, must have its data-sharing attribute explicitly determined
3716 // by being listed in a data-sharing attribute clause.
3717 if (DVar.CKind == OMPC_unknown &&
3718 (Stack->getDefaultDSA() == DSA_none ||
3719 Stack->getDefaultDSA() == DSA_private ||
3720 Stack->getDefaultDSA() == DSA_firstprivate) &&
3721 isImplicitOrExplicitTaskingRegion(DKind) &&
3722 VarsWithInheritedDSA.count(VD) == 0) {
3723 bool InheritedDSA = Stack->getDefaultDSA() == DSA_none;
3724 if (!InheritedDSA && (Stack->getDefaultDSA() == DSA_firstprivate ||
3725 Stack->getDefaultDSA() == DSA_private)) {
3726 DSAStackTy::DSAVarData DVar =
3727 Stack->getImplicitDSA(VD, /*FromParent=*/false);
3728 InheritedDSA = DVar.CKind == OMPC_unknown;
3729 }
3730 if (InheritedDSA)
3731 VarsWithInheritedDSA[VD] = E;
3732 if (Stack->getDefaultDSA() == DSA_none)
3733 return;
3734 }
3735
3736 // OpenMP 5.0 [2.19.7.2, defaultmap clause, Description]
3737 // If implicit-behavior is none, each variable referenced in the
3738 // construct that does not have a predetermined data-sharing attribute
3739 // and does not appear in a to or link clause on a declare target
3740 // directive must be listed in a data-mapping attribute clause, a
3741 // data-sharing attribute clause (including a data-sharing attribute
3742 // clause on a combined construct where target. is one of the
3743 // constituent constructs), or an is_device_ptr clause.
3744 OpenMPDefaultmapClauseKind ClauseKind =
3745 getVariableCategoryFromDecl(SemaRef.getLangOpts(), VD);
3746 if (SemaRef.getLangOpts().OpenMP >= 50) {
3747 bool IsModifierNone = Stack->getDefaultmapModifier(ClauseKind) ==
3748 OMPC_DEFAULTMAP_MODIFIER_none;
3749 if (DVar.CKind == OMPC_unknown && IsModifierNone &&
3750 VarsWithInheritedDSA.count(VD) == 0 && !Res) {
3751 // Only check for data-mapping attribute and is_device_ptr here
3752 // since we have already make sure that the declaration does not
3753 // have a data-sharing attribute above
3754 if (!Stack->checkMappableExprComponentListsForDecl(
3755 VD, /*CurrentRegionOnly=*/true,
3756 [VD](OMPClauseMappableExprCommon::MappableExprComponentListRef
3757 MapExprComponents,
3758 OpenMPClauseKind) {
3759 auto MI = MapExprComponents.rbegin();
3760 auto ME = MapExprComponents.rend();
3761 return MI != ME && MI->getAssociatedDeclaration() == VD;
3762 })) {
3763 VarsWithInheritedDSA[VD] = E;
3764 return;
3765 }
3766 }
3767 }
3768 if (SemaRef.getLangOpts().OpenMP > 50) {
3769 bool IsModifierPresent = Stack->getDefaultmapModifier(ClauseKind) ==
3770 OMPC_DEFAULTMAP_MODIFIER_present;
3771 if (IsModifierPresent) {
3772 if (!llvm::is_contained(ImplicitMapModifier[ClauseKind],
3773 OMPC_MAP_MODIFIER_present)) {
3774 ImplicitMapModifier[ClauseKind].push_back(
3775 OMPC_MAP_MODIFIER_present);
3776 }
3777 }
3778 }
3779
3780 if (isOpenMPTargetExecutionDirective(DKind) &&
3781 !Stack->isLoopControlVariable(VD).first) {
3782 if (!Stack->checkMappableExprComponentListsForDecl(
3783 VD, /*CurrentRegionOnly=*/true,
3784 [this](OMPClauseMappableExprCommon::MappableExprComponentListRef
3785 StackComponents,
3786 OpenMPClauseKind) {
3787 if (SemaRef.LangOpts.OpenMP >= 50)
3788 return !StackComponents.empty();
3789 // Variable is used if it has been marked as an array, array
3790 // section, array shaping or the variable iself.
3791 return StackComponents.size() == 1 ||
3792 llvm::all_of(
3793 llvm::drop_begin(llvm::reverse(StackComponents)),
3794 [](const OMPClauseMappableExprCommon::
3795 MappableComponent &MC) {
3796 return MC.getAssociatedDeclaration() ==
3797 nullptr &&
3798 (isa<OMPArraySectionExpr>(
3799 MC.getAssociatedExpression()) ||
3800 isa<OMPArrayShapingExpr>(
3801 MC.getAssociatedExpression()) ||
3802 isa<ArraySubscriptExpr>(
3803 MC.getAssociatedExpression()));
3804 });
3805 })) {
3806 bool IsFirstprivate = false;
3807 // By default lambdas are captured as firstprivates.
3808 if (const auto *RD =
3809 VD->getType().getNonReferenceType()->getAsCXXRecordDecl())
3810 IsFirstprivate = RD->isLambda();
3811 IsFirstprivate =
3812 IsFirstprivate || (Stack->mustBeFirstprivate(ClauseKind) && !Res);
3813 if (IsFirstprivate) {
3814 ImplicitFirstprivate.emplace_back(E);
3815 } else {
3816 OpenMPDefaultmapClauseModifier M =
3817 Stack->getDefaultmapModifier(ClauseKind);
3818 OpenMPMapClauseKind Kind = getMapClauseKindFromModifier(
3819 M, ClauseKind == OMPC_DEFAULTMAP_aggregate || Res);
3820 ImplicitMap[ClauseKind][Kind].emplace_back(E);
3821 }
3822 return;
3823 }
3824 }
3825
3826 // OpenMP [2.9.3.6, Restrictions, p.2]
3827 // A list item that appears in a reduction clause of the innermost
3828 // enclosing worksharing or parallel construct may not be accessed in an
3829 // explicit task.
3830 DVar = Stack->hasInnermostDSA(
3831 VD,
3832 [](OpenMPClauseKind C, bool AppliedToPointee) {
3833 return C == OMPC_reduction && !AppliedToPointee;
3834 },
3835 [](OpenMPDirectiveKind K) {
3836 return isOpenMPParallelDirective(K) ||
3837 isOpenMPWorksharingDirective(K) || isOpenMPTeamsDirective(K);
3838 },
3839 /*FromParent=*/true);
3840 if (isOpenMPTaskingDirective(DKind) && DVar.CKind == OMPC_reduction) {
3841 ErrorFound = true;
3842 SemaRef.Diag(ELoc, diag::err_omp_reduction_in_task);
3843 reportOriginalDsa(SemaRef, Stack, VD, DVar);
3844 return;
3845 }
3846
3847 // Define implicit data-sharing attributes for task.
3848 DVar = Stack->getImplicitDSA(VD, /*FromParent=*/false);
3849 if (((isOpenMPTaskingDirective(DKind) && DVar.CKind != OMPC_shared) ||
3850 (((Stack->getDefaultDSA() == DSA_firstprivate &&
3851 DVar.CKind == OMPC_firstprivate) ||
3852 (Stack->getDefaultDSA() == DSA_private &&
3853 DVar.CKind == OMPC_private)) &&
3854 !DVar.RefExpr)) &&
3855 !Stack->isLoopControlVariable(VD).first) {
3856 if (Stack->getDefaultDSA() == DSA_private)
3857 ImplicitPrivate.push_back(E);
3858 else
3859 ImplicitFirstprivate.push_back(E);
3860 return;
3861 }
3862
3863 // Store implicitly used globals with declare target link for parent
3864 // target.
3865 if (!isOpenMPTargetExecutionDirective(DKind) && Res &&
3866 *Res == OMPDeclareTargetDeclAttr::MT_Link) {
3867 Stack->addToParentTargetRegionLinkGlobals(E);
3868 return;
3869 }
3870 }
3871 }
3872 void VisitMemberExpr(MemberExpr *E) {
3873 if (E->isTypeDependent() || E->isValueDependent() ||
3874 E->containsUnexpandedParameterPack() || E->isInstantiationDependent())
3875 return;
3876 auto *FD = dyn_cast<FieldDecl>(E->getMemberDecl());
3877 OpenMPDirectiveKind DKind = Stack->getCurrentDirective();
3878 if (auto *TE = dyn_cast<CXXThisExpr>(E->getBase()->IgnoreParenCasts())) {
3879 if (!FD)
3880 return;
3881 DSAStackTy::DSAVarData DVar = Stack->getTopDSA(FD, /*FromParent=*/false);
3882 // Check if the variable has explicit DSA set and stop analysis if it
3883 // so.
3884 if (DVar.RefExpr || !ImplicitDeclarations.insert(FD).second)
3885 return;
3886
3887 if (isOpenMPTargetExecutionDirective(DKind) &&
3888 !Stack->isLoopControlVariable(FD).first &&
3889 !Stack->checkMappableExprComponentListsForDecl(
3890 FD, /*CurrentRegionOnly=*/true,
3891 [](OMPClauseMappableExprCommon::MappableExprComponentListRef
3892 StackComponents,
3893 OpenMPClauseKind) {
3894 return isa<CXXThisExpr>(
3895 cast<MemberExpr>(
3896 StackComponents.back().getAssociatedExpression())
3897 ->getBase()
3898 ->IgnoreParens());
3899 })) {
3900 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C/C++, p.3]
3901 // A bit-field cannot appear in a map clause.
3902 //
3903 if (FD->isBitField())
3904 return;
3905
3906 // Check to see if the member expression is referencing a class that
3907 // has already been explicitly mapped
3908 if (Stack->isClassPreviouslyMapped(TE->getType()))
3909 return;
3910
3911 OpenMPDefaultmapClauseModifier Modifier =
3912 Stack->getDefaultmapModifier(OMPC_DEFAULTMAP_aggregate);
3913 OpenMPDefaultmapClauseKind ClauseKind =
3914 getVariableCategoryFromDecl(SemaRef.getLangOpts(), FD);
3915 OpenMPMapClauseKind Kind = getMapClauseKindFromModifier(
3916 Modifier, /*IsAggregateOrDeclareTarget*/ true);
3917 ImplicitMap[ClauseKind][Kind].emplace_back(E);
3918 return;
3919 }
3920
3921 SourceLocation ELoc = E->getExprLoc();
3922 // OpenMP [2.9.3.6, Restrictions, p.2]
3923 // A list item that appears in a reduction clause of the innermost
3924 // enclosing worksharing or parallel construct may not be accessed in
3925 // an explicit task.
3926 DVar = Stack->hasInnermostDSA(
3927 FD,
3928 [](OpenMPClauseKind C, bool AppliedToPointee) {
3929 return C == OMPC_reduction && !AppliedToPointee;
3930 },
3931 [](OpenMPDirectiveKind K) {
3932 return isOpenMPParallelDirective(K) ||
3933 isOpenMPWorksharingDirective(K) || isOpenMPTeamsDirective(K);
3934 },
3935 /*FromParent=*/true);
3936 if (isOpenMPTaskingDirective(DKind) && DVar.CKind == OMPC_reduction) {
3937 ErrorFound = true;
3938 SemaRef.Diag(ELoc, diag::err_omp_reduction_in_task);
3939 reportOriginalDsa(SemaRef, Stack, FD, DVar);
3940 return;
3941 }
3942
3943 // Define implicit data-sharing attributes for task.
3944 DVar = Stack->getImplicitDSA(FD, /*FromParent=*/false);
3945 if (isOpenMPTaskingDirective(DKind) && DVar.CKind != OMPC_shared &&
3946 !Stack->isLoopControlVariable(FD).first) {
3947 // Check if there is a captured expression for the current field in the
3948 // region. Do not mark it as firstprivate unless there is no captured
3949 // expression.
3950 // TODO: try to make it firstprivate.
3951 if (DVar.CKind != OMPC_unknown)
3952 ImplicitFirstprivate.push_back(E);
3953 }
3954 return;
3955 }
3956 if (isOpenMPTargetExecutionDirective(DKind)) {
3957 OMPClauseMappableExprCommon::MappableExprComponentList CurComponents;
3958 if (!checkMapClauseExpressionBase(SemaRef, E, CurComponents, OMPC_map,
3959 Stack->getCurrentDirective(),
3960 /*NoDiagnose=*/true))
3961 return;
3962 const auto *VD = cast<ValueDecl>(
3963 CurComponents.back().getAssociatedDeclaration()->getCanonicalDecl());
3964 if (!Stack->checkMappableExprComponentListsForDecl(
3965 VD, /*CurrentRegionOnly=*/true,
3966 [&CurComponents](
3967 OMPClauseMappableExprCommon::MappableExprComponentListRef
3968 StackComponents,
3969 OpenMPClauseKind) {
3970 auto CCI = CurComponents.rbegin();
3971 auto CCE = CurComponents.rend();
3972 for (const auto &SC : llvm::reverse(StackComponents)) {
3973 // Do both expressions have the same kind?
3974 if (CCI->getAssociatedExpression()->getStmtClass() !=
3975 SC.getAssociatedExpression()->getStmtClass())
3976 if (!((isa<OMPArraySectionExpr>(
3977 SC.getAssociatedExpression()) ||
3978 isa<OMPArrayShapingExpr>(
3979 SC.getAssociatedExpression())) &&
3980 isa<ArraySubscriptExpr>(
3981 CCI->getAssociatedExpression())))
3982 return false;
3983
3984 const Decl *CCD = CCI->getAssociatedDeclaration();
3985 const Decl *SCD = SC.getAssociatedDeclaration();
3986 CCD = CCD ? CCD->getCanonicalDecl() : nullptr;
3987 SCD = SCD ? SCD->getCanonicalDecl() : nullptr;
3988 if (SCD != CCD)
3989 return false;
3990 std::advance(CCI, 1);
3991 if (CCI == CCE)
3992 break;
3993 }
3994 return true;
3995 })) {
3996 Visit(E->getBase());
3997 }
3998 } else if (!TryCaptureCXXThisMembers) {
3999 Visit(E->getBase());
4000 }
4001 }
4002 void VisitOMPExecutableDirective(OMPExecutableDirective *S) {
4003 for (OMPClause *C : S->clauses()) {
4004 // Skip analysis of arguments of private clauses for task|target
4005 // directives.
4006 if (isa_and_nonnull<OMPPrivateClause>(C))
4007 continue;
4008 // Skip analysis of arguments of implicitly defined firstprivate clause
4009 // for task|target directives.
4010 // Skip analysis of arguments of implicitly defined map clause for target
4011 // directives.
4012 if (C && !((isa<OMPFirstprivateClause>(C) || isa<OMPMapClause>(C)) &&
4013 C->isImplicit() &&
4014 !isOpenMPTaskingDirective(Stack->getCurrentDirective()))) {
4015 for (Stmt *CC : C->children()) {
4016 if (CC)
4017 Visit(CC);
4018 }
4019 }
4020 }
4021 // Check implicitly captured variables.
4022 VisitSubCaptures(S);
4023 }
4024
4025 void VisitOMPLoopTransformationDirective(OMPLoopTransformationDirective *S) {
4026 // Loop transformation directives do not introduce data sharing
4027 VisitStmt(S);
4028 }
4029
4030 void VisitCallExpr(CallExpr *S) {
4031 for (Stmt *C : S->arguments()) {
4032 if (C) {
4033 // Check implicitly captured variables in the task-based directives to
4034 // check if they must be firstprivatized.
4035 Visit(C);
4036 }
4037 }
4038 if (Expr *Callee = S->getCallee())
4039 if (auto *CE = dyn_cast<MemberExpr>(Callee->IgnoreParenImpCasts()))
4040 Visit(CE->getBase());
4041 }
4042 void VisitStmt(Stmt *S) {
4043 for (Stmt *C : S->children()) {
4044 if (C) {
4045 // Check implicitly captured variables in the task-based directives to
4046 // check if they must be firstprivatized.
4047 Visit(C);
4048 }
4049 }
4050 }
4051
4052 void visitSubCaptures(CapturedStmt *S) {
4053 for (const CapturedStmt::Capture &Cap : S->captures()) {
4054 if (!Cap.capturesVariable() && !Cap.capturesVariableByCopy())
4055 continue;
4056 VarDecl *VD = Cap.getCapturedVar();
4057 // Do not try to map the variable if it or its sub-component was mapped
4058 // already.
4059 if (isOpenMPTargetExecutionDirective(Stack->getCurrentDirective()) &&
4060 Stack->checkMappableExprComponentListsForDecl(
4061 VD, /*CurrentRegionOnly=*/true,
4062 [](OMPClauseMappableExprCommon::MappableExprComponentListRef,
4063 OpenMPClauseKind) { return true; }))
4064 continue;
4065 DeclRefExpr *DRE = buildDeclRefExpr(
4066 SemaRef, VD, VD->getType().getNonLValueExprType(SemaRef.Context),
4067 Cap.getLocation(), /*RefersToCapture=*/true);
4068 Visit(DRE);
4069 }
4070 }
4071 bool isErrorFound() const { return ErrorFound; }
4072 ArrayRef<Expr *> getImplicitFirstprivate() const {
4073 return ImplicitFirstprivate;
4074 }
4075 ArrayRef<Expr *> getImplicitPrivate() const { return ImplicitPrivate; }
4076 ArrayRef<Expr *> getImplicitMap(OpenMPDefaultmapClauseKind DK,
4077 OpenMPMapClauseKind MK) const {
4078 return ImplicitMap[DK][MK];
4079 }
4080 ArrayRef<OpenMPMapModifierKind>
4081 getImplicitMapModifier(OpenMPDefaultmapClauseKind Kind) const {
4082 return ImplicitMapModifier[Kind];
4083 }
4084 const Sema::VarsWithInheritedDSAType &getVarsWithInheritedDSA() const {
4085 return VarsWithInheritedDSA;
4086 }
4087
4088 DSAAttrChecker(DSAStackTy *S, Sema &SemaRef, CapturedStmt *CS)
4089 : Stack(S), SemaRef(SemaRef), ErrorFound(false), CS(CS) {
4090 // Process declare target link variables for the target directives.
4091 if (isOpenMPTargetExecutionDirective(S->getCurrentDirective())) {
4092 for (DeclRefExpr *E : Stack->getLinkGlobals())
4093 Visit(E);
4094 }
4095 }
4096};
4097} // namespace
4098
4099static void handleDeclareVariantConstructTrait(DSAStackTy *Stack,
4100 OpenMPDirectiveKind DKind,
4101 bool ScopeEntry) {
4102 SmallVector<llvm::omp::TraitProperty, 8> Traits;
4103 if (isOpenMPTargetExecutionDirective(DKind))
4104 Traits.emplace_back(llvm::omp::TraitProperty::construct_target_target);
4105 if (isOpenMPTeamsDirective(DKind))
4106 Traits.emplace_back(llvm::omp::TraitProperty::construct_teams_teams);
4107 if (isOpenMPParallelDirective(DKind))
4108 Traits.emplace_back(llvm::omp::TraitProperty::construct_parallel_parallel);
4109 if (isOpenMPWorksharingDirective(DKind))
4110 Traits.emplace_back(llvm::omp::TraitProperty::construct_for_for);
4111 if (isOpenMPSimdDirective(DKind))
4112 Traits.emplace_back(llvm::omp::TraitProperty::construct_simd_simd);
4113 Stack->handleConstructTrait(Traits, ScopeEntry);
4114}
4115
4116void Sema::ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope) {
4117 switch (DKind) {
4118 case OMPD_parallel:
4119 case OMPD_parallel_for:
4120 case OMPD_parallel_for_simd:
4121 case OMPD_parallel_sections:
4122 case OMPD_parallel_master:
4123 case OMPD_parallel_masked:
4124 case OMPD_parallel_loop:
4125 case OMPD_teams:
4126 case OMPD_teams_distribute:
4127 case OMPD_teams_distribute_simd: {
4128 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4129 QualType KmpInt32PtrTy =
4130 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4131 Sema::CapturedParamNameType Params[] = {
4132 std::make_pair(".global_tid.", KmpInt32PtrTy),
4133 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4134 std::make_pair(StringRef(), QualType()) // __context with shared vars
4135 };
4136 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4137 Params);
4138 break;
4139 }
4140 case OMPD_target_teams:
4141 case OMPD_target_parallel:
4142 case OMPD_target_parallel_for:
4143 case OMPD_target_parallel_for_simd:
4144 case OMPD_target_teams_loop:
4145 case OMPD_target_parallel_loop:
4146 case OMPD_target_teams_distribute:
4147 case OMPD_target_teams_distribute_simd: {
4148 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4149 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4150 QualType KmpInt32PtrTy =
4151 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4152 QualType Args[] = {VoidPtrTy};
4153 FunctionProtoType::ExtProtoInfo EPI;
4154 EPI.Variadic = true;
4155 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4156 Sema::CapturedParamNameType Params[] = {
4157 std::make_pair(".global_tid.", KmpInt32Ty),
4158 std::make_pair(".part_id.", KmpInt32PtrTy),
4159 std::make_pair(".privates.", VoidPtrTy),
4160 std::make_pair(
4161 ".copy_fn.",
4162 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4163 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4164 std::make_pair(StringRef(), QualType()) // __context with shared vars
4165 };
4166 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4167 Params, /*OpenMPCaptureLevel=*/0);
4168 // Mark this captured region as inlined, because we don't use outlined
4169 // function directly.
4170 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4171 AlwaysInlineAttr::CreateImplicit(
4172 Context, {}, AttributeCommonInfo::AS_Keyword,
4173 AlwaysInlineAttr::Keyword_forceinline));
4174 Sema::CapturedParamNameType ParamsTarget[] = {
4175 std::make_pair(StringRef(), QualType()) // __context with shared vars
4176 };
4177 // Start a captured region for 'target' with no implicit parameters.
4178 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4179 ParamsTarget, /*OpenMPCaptureLevel=*/1);
4180 Sema::CapturedParamNameType ParamsTeamsOrParallel[] = {
4181 std::make_pair(".global_tid.", KmpInt32PtrTy),
4182 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4183 std::make_pair(StringRef(), QualType()) // __context with shared vars
4184 };
4185 // Start a captured region for 'teams' or 'parallel'. Both regions have
4186 // the same implicit parameters.
4187 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4188 ParamsTeamsOrParallel, /*OpenMPCaptureLevel=*/2);
4189 break;
4190 }
4191 case OMPD_target:
4192 case OMPD_target_simd: {
4193 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4194 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4195 QualType KmpInt32PtrTy =
4196 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4197 QualType Args[] = {VoidPtrTy};
4198 FunctionProtoType::ExtProtoInfo EPI;
4199 EPI.Variadic = true;
4200 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4201 Sema::CapturedParamNameType Params[] = {
4202 std::make_pair(".global_tid.", KmpInt32Ty),
4203 std::make_pair(".part_id.", KmpInt32PtrTy),
4204 std::make_pair(".privates.", VoidPtrTy),
4205 std::make_pair(
4206 ".copy_fn.",
4207 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4208 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4209 std::make_pair(StringRef(), QualType()) // __context with shared vars
4210 };
4211 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4212 Params, /*OpenMPCaptureLevel=*/0);
4213 // Mark this captured region as inlined, because we don't use outlined
4214 // function directly.
4215 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4216 AlwaysInlineAttr::CreateImplicit(
4217 Context, {}, AttributeCommonInfo::AS_Keyword,
4218 AlwaysInlineAttr::Keyword_forceinline));
4219 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4220 std::make_pair(StringRef(), QualType()),
4221 /*OpenMPCaptureLevel=*/1);
4222 break;
4223 }
4224 case OMPD_atomic:
4225 case OMPD_critical:
4226 case OMPD_section:
4227 case OMPD_master:
4228 case OMPD_masked:
4229 case OMPD_tile:
4230 case OMPD_unroll:
4231 break;
4232 case OMPD_loop:
4233 // TODO: 'loop' may require additional parameters depending on the binding.
4234 // Treat similar to OMPD_simd/OMPD_for for now.
4235 case OMPD_simd:
4236 case OMPD_for:
4237 case OMPD_for_simd:
4238 case OMPD_sections:
4239 case OMPD_single:
4240 case OMPD_taskgroup:
4241 case OMPD_distribute:
4242 case OMPD_distribute_simd:
4243 case OMPD_ordered:
4244 case OMPD_target_data:
4245 case OMPD_dispatch: {
4246 Sema::CapturedParamNameType Params[] = {
4247 std::make_pair(StringRef(), QualType()) // __context with shared vars
4248 };
4249 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4250 Params);
4251 break;
4252 }
4253 case OMPD_task: {
4254 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4255 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4256 QualType KmpInt32PtrTy =
4257 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4258 QualType Args[] = {VoidPtrTy};
4259 FunctionProtoType::ExtProtoInfo EPI;
4260 EPI.Variadic = true;
4261 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4262 Sema::CapturedParamNameType Params[] = {
4263 std::make_pair(".global_tid.", KmpInt32Ty),
4264 std::make_pair(".part_id.", KmpInt32PtrTy),
4265 std::make_pair(".privates.", VoidPtrTy),
4266 std::make_pair(
4267 ".copy_fn.",
4268 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4269 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4270 std::make_pair(StringRef(), QualType()) // __context with shared vars
4271 };
4272 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4273 Params);
4274 // Mark this captured region as inlined, because we don't use outlined
4275 // function directly.
4276 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4277 AlwaysInlineAttr::CreateImplicit(
4278 Context, {}, AttributeCommonInfo::AS_Keyword,
4279 AlwaysInlineAttr::Keyword_forceinline));
4280 break;
4281 }
4282 case OMPD_taskloop:
4283 case OMPD_taskloop_simd:
4284 case OMPD_master_taskloop:
4285 case OMPD_masked_taskloop:
4286 case OMPD_masked_taskloop_simd:
4287 case OMPD_master_taskloop_simd: {
4288 QualType KmpInt32Ty =
4289 Context.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1)
4290 .withConst();
4291 QualType KmpUInt64Ty =
4292 Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/0)
4293 .withConst();
4294 QualType KmpInt64Ty =
4295 Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/1)
4296 .withConst();
4297 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4298 QualType KmpInt32PtrTy =
4299 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4300 QualType Args[] = {VoidPtrTy};
4301 FunctionProtoType::ExtProtoInfo EPI;
4302 EPI.Variadic = true;
4303 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4304 Sema::CapturedParamNameType Params[] = {
4305 std::make_pair(".global_tid.", KmpInt32Ty),
4306 std::make_pair(".part_id.", KmpInt32PtrTy),
4307 std::make_pair(".privates.", VoidPtrTy),
4308 std::make_pair(
4309 ".copy_fn.",
4310 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4311 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4312 std::make_pair(".lb.", KmpUInt64Ty),
4313 std::make_pair(".ub.", KmpUInt64Ty),
4314 std::make_pair(".st.", KmpInt64Ty),
4315 std::make_pair(".liter.", KmpInt32Ty),
4316 std::make_pair(".reductions.", VoidPtrTy),
4317 std::make_pair(StringRef(), QualType()) // __context with shared vars
4318 };
4319 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4320 Params);
4321 // Mark this captured region as inlined, because we don't use outlined
4322 // function directly.
4323 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4324 AlwaysInlineAttr::CreateImplicit(
4325 Context, {}, AttributeCommonInfo::AS_Keyword,
4326 AlwaysInlineAttr::Keyword_forceinline));
4327 break;
4328 }
4329 case OMPD_parallel_masked_taskloop:
4330 case OMPD_parallel_masked_taskloop_simd:
4331 case OMPD_parallel_master_taskloop:
4332 case OMPD_parallel_master_taskloop_simd: {
4333 QualType KmpInt32Ty =
4334 Context.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1)
4335 .withConst();
4336 QualType KmpUInt64Ty =
4337 Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/0)
4338 .withConst();
4339 QualType KmpInt64Ty =
4340 Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/1)
4341 .withConst();
4342 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4343 QualType KmpInt32PtrTy =
4344 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4345 Sema::CapturedParamNameType ParamsParallel[] = {
4346 std::make_pair(".global_tid.", KmpInt32PtrTy),
4347 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4348 std::make_pair(StringRef(), QualType()) // __context with shared vars
4349 };
4350 // Start a captured region for 'parallel'.
4351 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4352 ParamsParallel, /*OpenMPCaptureLevel=*/0);
4353 QualType Args[] = {VoidPtrTy};
4354 FunctionProtoType::ExtProtoInfo EPI;
4355 EPI.Variadic = true;
4356 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4357 Sema::CapturedParamNameType Params[] = {
4358 std::make_pair(".global_tid.", KmpInt32Ty),
4359 std::make_pair(".part_id.", KmpInt32PtrTy),
4360 std::make_pair(".privates.", VoidPtrTy),
4361 std::make_pair(
4362 ".copy_fn.",
4363 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4364 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4365 std::make_pair(".lb.", KmpUInt64Ty),
4366 std::make_pair(".ub.", KmpUInt64Ty),
4367 std::make_pair(".st.", KmpInt64Ty),
4368 std::make_pair(".liter.", KmpInt32Ty),
4369 std::make_pair(".reductions.", VoidPtrTy),
4370 std::make_pair(StringRef(), QualType()) // __context with shared vars
4371 };
4372 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4373 Params, /*OpenMPCaptureLevel=*/1);
4374 // Mark this captured region as inlined, because we don't use outlined
4375 // function directly.
4376 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4377 AlwaysInlineAttr::CreateImplicit(
4378 Context, {}, AttributeCommonInfo::AS_Keyword,
4379 AlwaysInlineAttr::Keyword_forceinline));
4380 break;
4381 }
4382 case OMPD_distribute_parallel_for_simd:
4383 case OMPD_distribute_parallel_for: {
4384 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4385 QualType KmpInt32PtrTy =
4386 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4387 Sema::CapturedParamNameType Params[] = {
4388 std::make_pair(".global_tid.", KmpInt32PtrTy),
4389 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4390 std::make_pair(".previous.lb.", Context.getSizeType().withConst()),
4391 std::make_pair(".previous.ub.", Context.getSizeType().withConst()),
4392 std::make_pair(StringRef(), QualType()) // __context with shared vars
4393 };
4394 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4395 Params);
4396 break;
4397 }
4398 case OMPD_target_teams_distribute_parallel_for:
4399 case OMPD_target_teams_distribute_parallel_for_simd: {
4400 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4401 QualType KmpInt32PtrTy =
4402 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4403 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4404
4405 QualType Args[] = {VoidPtrTy};
4406 FunctionProtoType::ExtProtoInfo EPI;
4407 EPI.Variadic = true;
4408 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4409 Sema::CapturedParamNameType Params[] = {
4410 std::make_pair(".global_tid.", KmpInt32Ty),
4411 std::make_pair(".part_id.", KmpInt32PtrTy),
4412 std::make_pair(".privates.", VoidPtrTy),
4413 std::make_pair(
4414 ".copy_fn.",
4415 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4416 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4417 std::make_pair(StringRef(), QualType()) // __context with shared vars
4418 };
4419 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4420 Params, /*OpenMPCaptureLevel=*/0);
4421 // Mark this captured region as inlined, because we don't use outlined
4422 // function directly.
4423 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4424 AlwaysInlineAttr::CreateImplicit(
4425 Context, {}, AttributeCommonInfo::AS_Keyword,
4426 AlwaysInlineAttr::Keyword_forceinline));
4427 Sema::CapturedParamNameType ParamsTarget[] = {
4428 std::make_pair(StringRef(), QualType()) // __context with shared vars
4429 };
4430 // Start a captured region for 'target' with no implicit parameters.
4431 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4432 ParamsTarget, /*OpenMPCaptureLevel=*/1);
4433
4434 Sema::CapturedParamNameType ParamsTeams[] = {
4435 std::make_pair(".global_tid.", KmpInt32PtrTy),
4436 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4437 std::make_pair(StringRef(), QualType()) // __context with shared vars
4438 };
4439 // Start a captured region for 'target' with no implicit parameters.
4440 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4441 ParamsTeams, /*OpenMPCaptureLevel=*/2);
4442
4443 Sema::CapturedParamNameType ParamsParallel[] = {
4444 std::make_pair(".global_tid.", KmpInt32PtrTy),
4445 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4446 std::make_pair(".previous.lb.", Context.getSizeType().withConst()),
4447 std::make_pair(".previous.ub.", Context.getSizeType().withConst()),
4448 std::make_pair(StringRef(), QualType()) // __context with shared vars
4449 };
4450 // Start a captured region for 'teams' or 'parallel'. Both regions have
4451 // the same implicit parameters.
4452 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4453 ParamsParallel, /*OpenMPCaptureLevel=*/3);
4454 break;
4455 }
4456
4457 case OMPD_teams_loop: {
4458 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4459 QualType KmpInt32PtrTy =
4460 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4461
4462 Sema::CapturedParamNameType ParamsTeams[] = {
4463 std::make_pair(".global_tid.", KmpInt32PtrTy),
4464 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4465 std::make_pair(StringRef(), QualType()) // __context with shared vars
4466 };
4467 // Start a captured region for 'teams'.
4468 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4469 ParamsTeams, /*OpenMPCaptureLevel=*/0);
4470 break;
4471 }
4472
4473 case OMPD_teams_distribute_parallel_for:
4474 case OMPD_teams_distribute_parallel_for_simd: {
4475 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4476 QualType KmpInt32PtrTy =
4477 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4478
4479 Sema::CapturedParamNameType ParamsTeams[] = {
4480 std::make_pair(".global_tid.", KmpInt32PtrTy),
4481 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4482 std::make_pair(StringRef(), QualType()) // __context with shared vars
4483 };
4484 // Start a captured region for 'target' with no implicit parameters.
4485 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4486 ParamsTeams, /*OpenMPCaptureLevel=*/0);
4487
4488 Sema::CapturedParamNameType ParamsParallel[] = {
4489 std::make_pair(".global_tid.", KmpInt32PtrTy),
4490 std::make_pair(".bound_tid.", KmpInt32PtrTy),
4491 std::make_pair(".previous.lb.", Context.getSizeType().withConst()),
4492 std::make_pair(".previous.ub.", Context.getSizeType().withConst()),
4493 std::make_pair(StringRef(), QualType()) // __context with shared vars
4494 };
4495 // Start a captured region for 'teams' or 'parallel'. Both regions have
4496 // the same implicit parameters.
4497 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4498 ParamsParallel, /*OpenMPCaptureLevel=*/1);
4499 break;
4500 }
4501 case OMPD_target_update:
4502 case OMPD_target_enter_data:
4503 case OMPD_target_exit_data: {
4504 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1).withConst();
4505 QualType VoidPtrTy = Context.VoidPtrTy.withConst().withRestrict();
4506 QualType KmpInt32PtrTy =
4507 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
4508 QualType Args[] = {VoidPtrTy};
4509 FunctionProtoType::ExtProtoInfo EPI;
4510 EPI.Variadic = true;
4511 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
4512 Sema::CapturedParamNameType Params[] = {
4513 std::make_pair(".global_tid.", KmpInt32Ty),
4514 std::make_pair(".part_id.", KmpInt32PtrTy),
4515 std::make_pair(".privates.", VoidPtrTy),
4516 std::make_pair(
4517 ".copy_fn.",
4518 Context.getPointerType(CopyFnType).withConst().withRestrict()),
4519 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
4520 std::make_pair(StringRef(), QualType()) // __context with shared vars
4521 };
4522 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getConstructLoc(), CurScope, CR_OpenMP,
4523 Params);
4524 // Mark this captured region as inlined, because we don't use outlined
4525 // function directly.
4526 getCurCapturedRegion()->TheCapturedDecl->addAttr(
4527 AlwaysInlineAttr::CreateImplicit(
4528 Context, {}, AttributeCommonInfo::AS_Keyword,
4529 AlwaysInlineAttr::Keyword_forceinline));
4530 break;
4531 }
4532 case OMPD_threadprivate:
4533 case OMPD_allocate:
4534 case OMPD_taskyield:
4535 case OMPD_error:
4536 case OMPD_barrier:
4537 case OMPD_taskwait:
4538 case OMPD_cancellation_point:
4539 case OMPD_cancel:
4540 case OMPD_flush:
4541 case OMPD_depobj:
4542 case OMPD_scan:
4543 case OMPD_declare_reduction:
4544 case OMPD_declare_mapper:
4545 case OMPD_declare_simd:
4546 case OMPD_declare_target:
4547 case OMPD_end_declare_target:
4548 case OMPD_requires:
4549 case OMPD_declare_variant:
4550 case OMPD_begin_declare_variant:
4551 case OMPD_end_declare_variant:
4552 case OMPD_metadirective:
4553 llvm_unreachable("OpenMP Directive is not allowed")::llvm::llvm_unreachable_internal("OpenMP Directive is not allowed"
, "clang/lib/Sema/SemaOpenMP.cpp", 4553)
;
4554 case OMPD_unknown:
4555 default:
4556 llvm_unreachable("Unknown OpenMP directive")::llvm::llvm_unreachable_internal("Unknown OpenMP directive",
"clang/lib/Sema/SemaOpenMP.cpp", 4556)
;
4557 }
4558 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setContext(CurContext);
4559 handleDeclareVariantConstructTrait(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, DKind, /* ScopeEntry */ true);
4560}
4561
4562int Sema::getNumberOfConstructScopes(unsigned Level) const {
4563 return getOpenMPCaptureLevels(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getDirective(Level));
4564}
4565
4566int Sema::getOpenMPCaptureLevels(OpenMPDirectiveKind DKind) {
4567 SmallVector<OpenMPDirectiveKind, 4> CaptureRegions;
4568 getOpenMPCaptureRegions(CaptureRegions, DKind);
4569 return CaptureRegions.size();
4570}
4571
4572static OMPCapturedExprDecl *buildCaptureDecl(Sema &S, IdentifierInfo *Id,
4573 Expr *CaptureExpr, bool WithInit,
4574 DeclContext *CurContext,
4575 bool AsExpression) {
4576 assert(CaptureExpr)(static_cast <bool> (CaptureExpr) ? void (0) : __assert_fail
("CaptureExpr", "clang/lib/Sema/SemaOpenMP.cpp", 4576, __extension__
__PRETTY_FUNCTION__))
;
4577 ASTContext &C = S.getASTContext();
4578 Expr *Init = AsExpression ? CaptureExpr : CaptureExpr->IgnoreImpCasts();
4579 QualType Ty = Init->getType();
4580 if (CaptureExpr->getObjectKind() == OK_Ordinary && CaptureExpr->isGLValue()) {
4581 if (S.getLangOpts().CPlusPlus) {
4582 Ty = C.getLValueReferenceType(Ty);
4583 } else {
4584 Ty = C.getPointerType(Ty);
4585 ExprResult Res =
4586 S.CreateBuiltinUnaryOp(CaptureExpr->getExprLoc(), UO_AddrOf, Init);
4587 if (!Res.isUsable())
4588 return nullptr;
4589 Init = Res.get();
4590 }
4591 WithInit = true;
4592 }
4593 auto *CED = OMPCapturedExprDecl::Create(C, CurContext, Id, Ty,
4594 CaptureExpr->getBeginLoc());
4595 if (!WithInit)
4596 CED->addAttr(OMPCaptureNoInitAttr::CreateImplicit(C));
4597 CurContext->addHiddenDecl(CED);
4598 Sema::TentativeAnalysisScope Trap(S);
4599 S.AddInitializerToDecl(CED, Init, /*DirectInit=*/false);
4600 return CED;
4601}
4602
4603static DeclRefExpr *buildCapture(Sema &S, ValueDecl *D, Expr *CaptureExpr,
4604 bool WithInit) {
4605 OMPCapturedExprDecl *CD;
4606 if (VarDecl *VD = S.isOpenMPCapturedDecl(D))
4607 CD = cast<OMPCapturedExprDecl>(VD);
4608 else
4609 CD = buildCaptureDecl(S, D->getIdentifier(), CaptureExpr, WithInit,
4610 S.CurContext,
4611 /*AsExpression=*/false);
4612 return buildDeclRefExpr(S, CD, CD->getType().getNonReferenceType(),
4613 CaptureExpr->getExprLoc());
4614}
4615
4616static ExprResult buildCapture(Sema &S, Expr *CaptureExpr, DeclRefExpr *&Ref) {
4617 CaptureExpr = S.DefaultLvalueConversion(CaptureExpr).get();
4618 if (!Ref) {
4619 OMPCapturedExprDecl *CD = buildCaptureDecl(
4620 S, &S.getASTContext().Idents.get(".capture_expr."), CaptureExpr,
4621 /*WithInit=*/true, S.CurContext, /*AsExpression=*/true);
4622 Ref = buildDeclRefExpr(S, CD, CD->getType().getNonReferenceType(),
4623 CaptureExpr->getExprLoc());
4624 }
4625 ExprResult Res = Ref;
4626 if (!S.getLangOpts().CPlusPlus &&
4627 CaptureExpr->getObjectKind() == OK_Ordinary && CaptureExpr->isGLValue() &&
4628 Ref->getType()->isPointerType()) {
4629 Res = S.CreateBuiltinUnaryOp(CaptureExpr->getExprLoc(), UO_Deref, Ref);
4630 if (!Res.isUsable())
4631 return ExprError();
4632 }
4633 return S.DefaultLvalueConversion(Res.get());
4634}
4635
4636namespace {
4637// OpenMP directives parsed in this section are represented as a
4638// CapturedStatement with an associated statement. If a syntax error
4639// is detected during the parsing of the associated statement, the
4640// compiler must abort processing and close the CapturedStatement.
4641//
4642// Combined directives such as 'target parallel' have more than one
4643// nested CapturedStatements. This RAII ensures that we unwind out
4644// of all the nested CapturedStatements when an error is found.
4645class CaptureRegionUnwinderRAII {
4646private:
4647 Sema &S;
4648 bool &ErrorFound;
4649 OpenMPDirectiveKind DKind = OMPD_unknown;
4650
4651public:
4652 CaptureRegionUnwinderRAII(Sema &S, bool &ErrorFound,
4653 OpenMPDirectiveKind DKind)
4654 : S(S), ErrorFound(ErrorFound), DKind(DKind) {}
4655 ~CaptureRegionUnwinderRAII() {
4656 if (ErrorFound) {
4657 int ThisCaptureLevel = S.getOpenMPCaptureLevels(DKind);
4658 while (--ThisCaptureLevel >= 0)
4659 S.ActOnCapturedRegionError();
4660 }
4661 }
4662};
4663} // namespace
4664
4665void Sema::tryCaptureOpenMPLambdas(ValueDecl *V) {
4666 // Capture variables captured by reference in lambdas for target-based
4667 // directives.
4668 if (!CurContext->isDependentContext() &&
4669 (isOpenMPTargetExecutionDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()) ||
4670 isOpenMPTargetDataManagementDirective(
4671 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()))) {
4672 QualType Type = V->getType();
4673 if (const auto *RD = Type.getCanonicalType()
4674 .getNonReferenceType()
4675 ->getAsCXXRecordDecl()) {
4676 bool SavedForceCaptureByReferenceInTargetExecutable =
4677 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->isForceCaptureByReferenceInTargetExecutable();
4678 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setForceCaptureByReferenceInTargetExecutable(
4679 /*V=*/true);
4680 if (RD->isLambda()) {
4681 llvm::DenseMap<const ValueDecl *, FieldDecl *> Captures;
4682 FieldDecl *ThisCapture;
4683 RD->getCaptureFields(Captures, ThisCapture);
4684 for (const LambdaCapture &LC : RD->captures()) {
4685 if (LC.getCaptureKind() == LCK_ByRef) {
4686 VarDecl *VD = cast<VarDecl>(LC.getCapturedVar());
4687 DeclContext *VDC = VD->getDeclContext();
4688 if (!VDC->Encloses(CurContext))
4689 continue;
4690 MarkVariableReferenced(LC.getLocation(), VD);
4691 } else if (LC.getCaptureKind() == LCK_This) {
4692 QualType ThisTy = getCurrentThisType();
4693 if (!ThisTy.isNull() &&
4694 Context.typesAreCompatible(ThisTy, ThisCapture->getType()))
4695 CheckCXXThisCapture(LC.getLocation());
4696 }
4697 }
4698 }
4699 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setForceCaptureByReferenceInTargetExecutable(
4700 SavedForceCaptureByReferenceInTargetExecutable);
4701 }
4702 }
4703}
4704
4705static bool checkOrderedOrderSpecified(Sema &S,
4706 const ArrayRef<OMPClause *> Clauses) {
4707 const OMPOrderedClause *Ordered = nullptr;
4708 const OMPOrderClause *Order = nullptr;
4709
4710 for (const OMPClause *Clause : Clauses) {
4711 if (Clause->getClauseKind() == OMPC_ordered)
4712 Ordered = cast<OMPOrderedClause>(Clause);
4713 else if (Clause->getClauseKind() == OMPC_order) {
4714 Order = cast<OMPOrderClause>(Clause);
4715 if (Order->getKind() != OMPC_ORDER_concurrent)
4716 Order = nullptr;
4717 }
4718 if (Ordered && Order)
4719 break;
4720 }
4721
4722 if (Ordered && Order) {
4723 S.Diag(Order->getKindKwLoc(),
4724 diag::err_omp_simple_clause_incompatible_with_ordered)
4725 << getOpenMPClauseName(OMPC_order)
4726 << getOpenMPSimpleClauseTypeName(OMPC_order, OMPC_ORDER_concurrent)
4727 << SourceRange(Order->getBeginLoc(), Order->getEndLoc());
4728 S.Diag(Ordered->getBeginLoc(), diag::note_omp_ordered_param)
4729 << 0 << SourceRange(Ordered->getBeginLoc(), Ordered->getEndLoc());
4730 return true;
4731 }
4732 return false;
4733}
4734
4735StmtResult Sema::ActOnOpenMPRegionEnd(StmtResult S,
4736 ArrayRef<OMPClause *> Clauses) {
4737 handleDeclareVariantConstructTrait(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective(),
4738 /* ScopeEntry */ false);
4739 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() == OMPD_atomic ||
4740 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() == OMPD_critical ||
4741 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() == OMPD_section ||
4742 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() == OMPD_master ||
4743 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() == OMPD_masked)
4744 return S;
4745
4746 bool ErrorFound = false;
4747 CaptureRegionUnwinderRAII CaptureRegionUnwinder(
4748 *this, ErrorFound, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective());
4749 if (!S.isUsable()) {
4750 ErrorFound = true;
4751 return StmtError();
4752 }
4753
4754 SmallVector<OpenMPDirectiveKind, 4> CaptureRegions;
4755 getOpenMPCaptureRegions(CaptureRegions, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective());
4756 OMPOrderedClause *OC = nullptr;
4757 OMPScheduleClause *SC = nullptr;
4758 SmallVector<const OMPLinearClause *, 4> LCs;
4759 SmallVector<const OMPClauseWithPreInit *, 4> PICs;
4760 // This is required for proper codegen.
4761 for (OMPClause *Clause : Clauses) {
4762 if (!LangOpts.OpenMPSimd &&
4763 (isOpenMPTaskingDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()) ||
4764 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective() == OMPD_target) &&
4765 Clause->getClauseKind() == OMPC_in_reduction) {
4766 // Capture taskgroup task_reduction descriptors inside the tasking regions
4767 // with the corresponding in_reduction items.
4768 auto *IRC = cast<OMPInReductionClause>(Clause);
4769 for (Expr *E : IRC->taskgroup_descriptors())
4770 if (E)
4771 MarkDeclarationsReferencedInExpr(E);
4772 }
4773 if (isOpenMPPrivate(Clause->getClauseKind()) ||
4774 Clause->getClauseKind() == OMPC_copyprivate ||
4775 (getLangOpts().OpenMPUseTLS &&
4776 getASTContext().getTargetInfo().isTLSSupported() &&
4777 Clause->getClauseKind() == OMPC_copyin)) {
4778 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setForceVarCapturing(Clause->getClauseKind() == OMPC_copyin);
4779 // Mark all variables in private list clauses as used in inner region.
4780 for (Stmt *VarRef : Clause->children()) {
4781 if (auto *E = cast_or_null<Expr>(VarRef)) {
4782 MarkDeclarationsReferencedInExpr(E);
4783 }
4784 }
4785 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setForceVarCapturing(/*V=*/false);
4786 } else if (isOpenMPLoopTransformationDirective(
4787 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective())) {
4788 assert(CaptureRegions.empty() &&(static_cast <bool> (CaptureRegions.empty() && "No captured regions in loop transformation directives."
) ? void (0) : __assert_fail ("CaptureRegions.empty() && \"No captured regions in loop transformation directives.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 4789, __extension__ __PRETTY_FUNCTION__
))
4789 "No captured regions in loop transformation directives.")(static_cast <bool> (CaptureRegions.empty() && "No captured regions in loop transformation directives."
) ? void (0) : __assert_fail ("CaptureRegions.empty() && \"No captured regions in loop transformation directives.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 4789, __extension__ __PRETTY_FUNCTION__
))
;
4790 } else if (CaptureRegions.size() > 1 ||
4791 CaptureRegions.back() != OMPD_unknown) {
4792 if (auto *C = OMPClauseWithPreInit::get(Clause))
4793 PICs.push_back(C);
4794 if (auto *C = OMPClauseWithPostUpdate::get(Clause)) {
4795 if (Expr *E = C->getPostUpdateExpr())
4796 MarkDeclarationsReferencedInExpr(E);
4797 }
4798 }
4799 if (Clause->getClauseKind() == OMPC_schedule)
4800 SC = cast<OMPScheduleClause>(Clause);
4801 else if (Clause->getClauseKind() == OMPC_ordered)
4802 OC = cast<OMPOrderedClause>(Clause);
4803 else if (Clause->getClauseKind() == OMPC_linear)
4804 LCs.push_back(cast<OMPLinearClause>(Clause));
4805 }
4806 // Capture allocator expressions if used.
4807 for (Expr *E : DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getInnerAllocators())
4808 MarkDeclarationsReferencedInExpr(E);
4809 // OpenMP, 2.7.1 Loop Construct, Restrictions
4810 // The nonmonotonic modifier cannot be specified if an ordered clause is
4811 // specified.
4812 if (SC &&
4813 (SC->getFirstScheduleModifier() == OMPC_SCHEDULE_MODIFIER_nonmonotonic ||
4814 SC->getSecondScheduleModifier() ==
4815 OMPC_SCHEDULE_MODIFIER_nonmonotonic) &&
4816 OC) {
4817 Diag(SC->getFirstScheduleModifier() == OMPC_SCHEDULE_MODIFIER_nonmonotonic
4818 ? SC->getFirstScheduleModifierLoc()
4819 : SC->getSecondScheduleModifierLoc(),
4820 diag::err_omp_simple_clause_incompatible_with_ordered)
4821 << getOpenMPClauseName(OMPC_schedule)
4822 << getOpenMPSimpleClauseTypeName(OMPC_schedule,
4823 OMPC_SCHEDULE_MODIFIER_nonmonotonic)
4824 << SourceRange(OC->getBeginLoc(), OC->getEndLoc());
4825 ErrorFound = true;
4826 }
4827 // OpenMP 5.0, 2.9.2 Worksharing-Loop Construct, Restrictions.
4828 // If an order(concurrent) clause is present, an ordered clause may not appear
4829 // on the same directive.
4830 if (checkOrderedOrderSpecified(*this, Clauses))
4831 ErrorFound = true;
4832 if (!LCs.empty() && OC && OC->getNumForLoops()) {
4833 for (const OMPLinearClause *C : LCs) {
4834 Diag(C->getBeginLoc(), diag::err_omp_linear_ordered)
4835 << SourceRange(OC->getBeginLoc(), OC->getEndLoc());
4836 }
4837 ErrorFound = true;
4838 }
4839 if (isOpenMPWorksharingDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()) &&
4840 isOpenMPSimdDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective()) && OC &&
4841 OC->getNumForLoops()) {
4842 Diag(OC->getBeginLoc(), diag::err_omp_ordered_simd)
4843 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->getCurrentDirective());
4844 ErrorFound = true;
4845 }
4846 if (ErrorFound) {
4847 return StmtError();
4848 }
4849 StmtResult SR = S;
4850 unsigned CompletedRegions = 0;
4851 for (OpenMPDirectiveKind ThisCaptureRegion : llvm::reverse(CaptureRegions)) {
4852 // Mark all variables in private list clauses as used in inner region.
4853 // Required for proper codegen of combined directives.
4854 // TODO: add processing for other clauses.
4855 if (ThisCaptureRegion != OMPD_unknown) {
4856 for (const clang::OMPClauseWithPreInit *C : PICs) {
4857 OpenMPDirectiveKind CaptureRegion = C->getCaptureRegion();
4858 // Find the particular capture region for the clause if the
4859 // directive is a combined one with multiple capture regions.
4860 // If the directive is not a combined one, the capture region
4861 // associated with the clause is OMPD_unknown and is generated
4862 // only once.
4863 if (CaptureRegion == ThisCaptureRegion ||
4864 CaptureRegion == OMPD_unknown) {
4865 if (auto *DS = cast_or_null<DeclStmt>(C->getPreInitStmt())) {
4866 for (Decl *D : DS->decls())
4867 MarkVariableReferenced(D->getLocation(), cast<VarDecl>(D));
4868 }
4869 }
4870 }
4871 }
4872 if (ThisCaptureRegion == OMPD_target) {
4873 // Capture allocator traits in the target region. They are used implicitly
4874 // and, thus, are not captured by default.
4875 for (OMPClause *C : Clauses) {
4876 if (const auto *UAC = dyn_cast<OMPUsesAllocatorsClause>(C)) {
4877 for (unsigned I = 0, End = UAC->getNumberOfAllocators(); I < End;
4878 ++I) {
4879 OMPUsesAllocatorsClause::Data D = UAC->getAllocatorData(I);
4880 if (Expr *E = D.AllocatorTraits)
4881 MarkDeclarationsReferencedInExpr(E);
4882 }
4883 continue;
4884 }
4885 }
4886 }
4887 if (ThisCaptureRegion == OMPD_parallel) {
4888 // Capture temp arrays for inscan reductions and locals in aligned
4889 // clauses.
4890 for (OMPClause *C : Clauses) {
4891 if (auto *RC = dyn_cast<OMPReductionClause>(C)) {
4892 if (RC->getModifier() != OMPC_REDUCTION_inscan)
4893 continue;
4894 for (Expr *E : RC->copy_array_temps())
4895 MarkDeclarationsReferencedInExpr(E);
4896 }
4897 if (auto *AC = dyn_cast<OMPAlignedClause>(C)) {
4898 for (Expr *E : AC->varlists())
4899 MarkDeclarationsReferencedInExpr(E);
4900 }
4901 }
4902 }
4903 if (++CompletedRegions == CaptureRegions.size())
4904 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)
->setBodyComplete();
4905 SR = ActOnCapturedRegionEnd(SR.get());
4906 }
4907 return SR;
4908}
4909
4910static bool checkCancelRegion(Sema &SemaRef, OpenMPDirectiveKind CurrentRegion,
4911 OpenMPDirectiveKind CancelRegion,
4912 SourceLocation StartLoc) {
4913 // CancelRegion is only needed for cancel and cancellation_point.
4914 if (CurrentRegion != OMPD_cancel && CurrentRegion != OMPD_cancellation_point)
4915 return false;
4916
4917 if (CancelRegion == OMPD_parallel || CancelRegion == OMPD_for ||
4918 CancelRegion == OMPD_sections || CancelRegion == OMPD_taskgroup)
4919 return false;
4920
4921 SemaRef.Diag(StartLoc, diag::err_omp_wrong_cancel_region)
4922 << getOpenMPDirectiveName(CancelRegion);
4923 return true;
4924}
4925
4926static bool checkNestingOfRegions(Sema &SemaRef, const DSAStackTy *Stack,
4927 OpenMPDirectiveKind CurrentRegion,
4928 const DeclarationNameInfo &CurrentName,
4929 OpenMPDirectiveKind CancelRegion,
4930 OpenMPBindClauseKind BindKind,
4931 SourceLocation StartLoc) {
4932 if (Stack->getCurScope()) {
4933 OpenMPDirectiveKind ParentRegion = Stack->getParentDirective();
4934 OpenMPDirectiveKind OffendingRegion = ParentRegion;
4935 bool NestingProhibited = false;
4936 bool CloseNesting = true;
4937 bool OrphanSeen = false;
4938 enum {
4939 NoRecommend,
4940 ShouldBeInParallelRegion,
4941 ShouldBeInOrderedRegion,
4942 ShouldBeInTargetRegion,
4943 ShouldBeInTeamsRegion,
4944 ShouldBeInLoopSimdRegion,
4945 } Recommend = NoRecommend;
4946 if (isOpenMPSimdDirective(ParentRegion) &&
4947 ((SemaRef.LangOpts.OpenMP <= 45 && CurrentRegion != OMPD_ordered) ||
4948 (SemaRef.LangOpts.OpenMP >= 50 && CurrentRegion != OMPD_ordered &&
4949 CurrentRegion != OMPD_simd && CurrentRegion != OMPD_atomic &&
4950 CurrentRegion != OMPD_scan))) {
4951 // OpenMP [2.16, Nesting of Regions]
4952 // OpenMP constructs may not be nested inside a simd region.
4953 // OpenMP [2.8.1,simd Construct, Restrictions]
4954 // An ordered construct with the simd clause is the only OpenMP
4955 // construct that can appear in the simd region.
4956 // Allowing a SIMD construct nested in another SIMD construct is an
4957 // extension. The OpenMP 4.5 spec does not allow it. Issue a warning
4958 // message.
4959 // OpenMP 5.0 [2.9.3.1, simd Construct, Restrictions]
4960 // The only OpenMP constructs that can be encountered during execution of
4961 // a simd region are the atomic construct, the loop construct, the simd
4962 // construct and the ordered construct with the simd clause.
4963 SemaRef.Diag(StartLoc, (CurrentRegion != OMPD_simd)
4964 ? diag::err_omp_prohibited_region_simd
4965 : diag::warn_omp_nesting_simd)
4966 << (SemaRef.LangOpts.OpenMP >= 50 ? 1 : 0);
4967 return CurrentRegion != OMPD_simd;
4968 }
4969 if (ParentRegion == OMPD_atomic) {
4970 // OpenMP [2.16, Nesting of Regions]
4971 // OpenMP constructs may not be nested inside an atomic region.
4972 SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region_atomic);
4973 return true;
4974 }
4975 if (CurrentRegion == OMPD_section) {
4976 // OpenMP [2.7.2, sections Construct, Restrictions]
4977 // Orphaned section directives are prohibited. That is, the section
4978 // directives must appear within the sections construct and must not be
4979 // encountered elsewhere in the sections region.
4980 if (ParentRegion != OMPD_sections &&
4981 ParentRegion != OMPD_parallel_sections) {
4982 SemaRef.Diag(StartLoc, diag::err_omp_orphaned_section_directive)
4983 << (ParentRegion != OMPD_unknown)
4984 << getOpenMPDirectiveName(ParentRegion);
4985 return true;
4986 }
4987 return false;
4988 }
4989 // Allow some constructs (except teams and cancellation constructs) to be
4990 // orphaned (they could be used in functions, called from OpenMP regions
4991 // with the required preconditions).
4992 if (ParentRegion == OMPD_unknown &&
4993 !isOpenMPNestingTeamsDirective(CurrentRegion) &&
4994 CurrentRegion != OMPD_cancellation_point &&
4995 CurrentRegion != OMPD_cancel && CurrentRegion != OMPD_scan)
4996 return false;
4997 if (CurrentRegion == OMPD_cancellation_point ||
4998 CurrentRegion == OMPD_cancel) {
4999 // OpenMP [2.16, Nesting of Regions]
5000 // A cancellation point construct for which construct-type-clause is
5001 // taskgroup must be nested inside a task construct. A cancellation
5002 // point construct for which construct-type-clause is not taskgroup must
5003 // be closely nested inside an OpenMP construct that matches the type
5004 // specified in construct-type-clause.
5005 // A cancel construct for which construct-type-clause is taskgroup must be
5006 // nested inside a task construct. A cancel construct for which
5007 // construct-type-clause is not taskgroup must be closely nested inside an
5008 // OpenMP construct that matches the type specified in
5009 // construct-type-clause.
5010 NestingProhibited =
5011 !((CancelRegion == OMPD_parallel &&
5012 (ParentRegion == OMPD_parallel ||
5013 ParentRegion == OMPD_target_parallel)) ||
5014 (CancelRegion == OMPD_for &&
5015 (ParentRegion == OMPD_for || ParentRegion == OMPD_parallel_for ||
5016 ParentRegion == OMPD_target_parallel_for ||
5017 ParentRegion == OMPD_distribute_parallel_for ||
5018 ParentRegion == OMPD_teams_distribute_parallel_for ||
5019 ParentRegion == OMPD_target_teams_distribute_parallel_for)) ||
5020 (CancelRegion == OMPD_taskgroup &&
5021 (ParentRegion == OMPD_task ||
5022 (SemaRef.getLangOpts().OpenMP >= 50 &&
5023 (ParentRegion == OMPD_taskloop ||
5024 ParentRegion == OMPD_master_taskloop ||
5025 ParentRegion == OMPD_masked_taskloop ||
5026 ParentRegion == OMPD_parallel_masked_taskloop ||
5027 ParentRegion == OMPD_parallel_master_taskloop)))) ||
5028 (CancelRegion == OMPD_sections &&
5029 (ParentRegion == OMPD_section || ParentRegion == OMPD_sections ||
5030 ParentRegion == OMPD_parallel_sections)));
5031 OrphanSeen = ParentRegion == OMPD_unknown;
5032 } else if (CurrentRegion == OMPD_master || CurrentRegion == OMPD_masked) {
5033 // OpenMP 5.1 [2.22, Nesting of Regions]
5034 // A masked region may not be closely nested inside a worksharing, loop,
5035 // atomic, task, or taskloop region.
5036 NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
5037 isOpenMPGenericLoopDirective(ParentRegion) ||
5038 isOpenMPTaskingDirective(ParentRegion);
5039 } else if (CurrentRegion == OMPD_critical && CurrentName.getName()) {
5040 // OpenMP [2.16, Nesting of Regions]
5041 // A critical region may not be nested (closely or otherwise) inside a
5042 // critical region with the same name. Note that this restriction is not
5043 // sufficient to prevent deadlock.
5044 SourceLocation PreviousCriticalLoc;
5045 bool DeadLock = Stack->hasDirective(
5046 [CurrentName, &PreviousCriticalLoc](OpenMPDirectiveKind K,
5047 const DeclarationNameInfo &DNI,
5048 SourceLocation Loc) {
5049 if (K == OMPD_critical && DNI.getName() == CurrentName.getName()) {
5050 PreviousCriticalLoc = Loc;
5051 return true;
5052 }
5053 return false;
5054 },
5055 false /* skip top directive */);
5056 if (DeadLock) {
5057 SemaRef.Diag(StartLoc,
5058 diag::err_omp_prohibited_region_critical_same_name)
5059 << CurrentName.getName();
5060 if (PreviousCriticalLoc.isValid())
5061 SemaRef.Diag(PreviousCriticalLoc,
5062 diag::note_omp_previous_critical_region);
5063 return true;
5064 }
5065 } else if (CurrentRegion == OMPD_barrier) {
5066 // OpenMP 5.1 [2.22, Nesting of Regions]
5067 // A barrier region may not be closely nested inside a worksharing, loop,
5068 // task, taskloop, critical, ordered, atomic, or masked region.
5069 NestingProhibited =
5070 isOpenMPWorksharingDirective(ParentRegion) ||
5071 isOpenMPGenericLoopDirective(ParentRegion) ||
5072 isOpenMPTaskingDirective(ParentRegion) ||
5073 ParentRegion == OMPD_master || ParentRegion == OMPD_masked ||
5074 ParentRegion == OMPD_parallel_master ||
5075 ParentRegion == OMPD_parallel_masked ||
5076 ParentRegion == OMPD_critical || ParentRegion == OMPD_ordered;
5077 } else if (isOpenMPWorksharingDirective(CurrentRegion) &&
5078 !isOpenMPParallelDirective(CurrentRegion) &&
5079 !isOpenMPTeamsDirective(CurrentRegion)) {
5080 // OpenMP 5.1 [2.22, Nesting of Regions]
5081 // A loop region that binds to a parallel region or a worksharing region
5082 // may not be closely nested inside a worksharing, loop, task, taskloop,
5083 // critical, ordered, atomic, or masked region.
5084 NestingProhibited =
5085 isOpenMPWorksharingDirective(ParentRegion) ||
5086 isOpenMPGenericLoopDirective(ParentRegion) ||
5087 isOpenMPTaskingDirective(ParentRegion) ||
5088 ParentRegion == OMPD_master || ParentRegion == OMPD_masked ||
5089 ParentRegion == OMPD_parallel_master ||
5090 ParentRegion == OMPD_parallel_masked ||
5091 ParentRegion == OMPD_critical || ParentRegion == OMPD_ordered;
5092 Recommend = ShouldBeInParallelRegion;
5093 } else if (CurrentRegion == OMPD_ordered) {
5094 // OpenMP [2.16, Nesting of Regions]
5095 // An ordered region may not be closely nested inside a critical,
5096 // atomic, or explicit task region.
5097 // An ordered region must be closely nested inside a loop region (or
5098 // parallel loop region) with an ordered clause.
5099 // OpenMP [2.8.1,simd Construct, Restrictions]
5100 // An ordered construct with the simd clause is the only OpenMP construct
5101 // that can appear in the simd region.
5102 NestingProhibited = ParentRegion == OMPD_critical ||
5103 isOpenMPTaskingDirective(ParentRegion) ||
5104 !(isOpenMPSimdDirective(ParentRegion) ||
5105 Stack->isParentOrderedRegion());
5106 Recommend = ShouldBeInOrderedRegion;
5107 } else if (isOpenMPNestingTeamsDirective(CurrentRegion)) {
5108 // OpenMP [2.16, Nesting of Regions]
5109 // If specified, a teams construct must be contained within a target
5110 // construct.
5111 NestingProhibited =
5112 (SemaRef.LangOpts.OpenMP <= 45 && ParentRegion != OMPD_target) ||
5113 (SemaRef.LangOpts.OpenMP >= 50 && ParentRegion != OMPD_unknown &&
5114 ParentRegion != OMPD_target);
5115 OrphanSeen = ParentRegion == OMPD_unknown;
5116 Recommend = ShouldBeInTargetRegion;
5117 } else if (CurrentRegion == OMPD_scan) {
5118 // OpenMP [2.16, Nesting of Regions]
5119 // If specified, a teams construct must be contained within a target
5120 // construct.
5121 NestingProhibited =
5122 SemaRef.LangOpts.OpenMP < 50 ||
5123 (ParentRegion != OMPD_simd && ParentRegion != OMPD_for &&
5124 ParentRegion != OMPD_for_simd && ParentRegion != OMPD_parallel_for &&
5125 ParentRegion != OMPD_parallel_for_simd);
5126 OrphanSeen = ParentRegion == OMPD_unknown;
5127 Recommend = ShouldBeInLoopSimdRegion;
5128 }
5129 if (!NestingProhibited &&
5130 !isOpenMPTargetExecutionDirective(CurrentRegion) &&
5131 !isOpenMPTargetDataManagementDirective(CurrentRegion) &&
5132 (ParentRegion == OMPD_teams || ParentRegion == OMPD_target_teams)) {
5133 // OpenMP [5.1, 2.22, Nesting of Regions]
5134 // distribute, distribute simd, distribute parallel worksharing-loop,
5135 // distribute parallel worksharing-loop SIMD, loop, parallel regions,
5136 // including any parallel regions arising from combined constructs,
5137 // omp_get_num_teams() regions, and omp_get_team_num() regions are the
5138 // only OpenMP regions that may be strictly nested inside the teams
5139 // region.
5140 //
5141 // As an extension, we permit atomic within teams as well.
5142 NestingProhibited = !isOpenMPParallelDirective(CurrentRegion) &&
5143 !isOpenMPDistributeDirective(CurrentRegion) &&
5144 CurrentRegion != OMPD_loop &&
5145 !(SemaRef.getLangOpts().OpenMPExtensions &&
5146 CurrentRegion == OMPD_atomic);
5147 Recommend = ShouldBeInParallelRegion;
5148 }
5149 if (!NestingProhibited && CurrentRegion == OMPD_loop) {
5150 // OpenMP [5.1, 2.11.7, loop Construct, Restrictions]
5151 // If the bind clause is present on the loop construct and binding is
5152 // teams then the corresponding loop region must be strictly nested inside
5153 // a teams region.
5154 NestingProhibited = BindKind == OMPC_BIND_teams &&
5155 ParentRegion != OMPD_teams &&
5156 ParentRegion != OMPD_target_teams;
5157 Recommend = ShouldBeInTeamsRegion;
5158 }
5159 if (!NestingProhibited &&
5160 isOpenMPNestingDistributeDirective(CurrentRegion)) {
5161 // OpenMP 4.5 [2.17 Nesting of Regions]
5162 // The region associated with the distribute construct must be strictly
5163 // nested inside a teams region
5164 NestingProhibited =
5165 (ParentRegion != OMPD_teams && ParentRegion != OMPD_target_teams);
5166 Recommend = ShouldBeInTeamsRegion;
5167 }
5168 if (!NestingProhibited &&
5169 (isOpenMPTargetExecutionDirective(CurrentRegion) ||
5170 isOpenMPTargetDataManagementDirective(CurrentRegion))) {
5171 // OpenMP 4.5 [2.17 Nesting of Regions]
5172 // If a target, target update, target data, target enter data, or
5173 // target exit data construct is encountered during execution of a
5174 // target region, the behavior is unspecified.
5175 NestingProhibited = Stack->hasDirective(
5176 [&OffendingRegion](OpenMPDirectiveKind K, const DeclarationNameInfo &,
5177 SourceLocation) {
5178 if (isOpenMPTargetExecutionDirective(K)) {
5179 OffendingRegion = K;
5180 return true;
5181 }
5182 return false;
5183 },
5184 false /* don't skip top directive */);
5185 CloseNesting = false;
5186 }
5187 if (NestingProhibited) {
5188 if (OrphanSeen) {
5189 SemaRef.Diag(StartLoc, diag::err_omp_orphaned_device_directive)
5190 << getOpenMPDirectiveName(CurrentRegion) << Recommend;
5191 } else {
5192 SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region)
5193 << CloseNesting << getOpenMPDirectiveName(OffendingRegion)
5194 << Recommend << getOpenMPDirectiveName(CurrentRegion);
5195 }
5196 return true;
5197 }
5198 }
5199 return false;
5200}
5201
5202struct Kind2Unsigned {
5203 using argument_type = OpenMPDirectiveKind;
5204 unsigned operator()(argument_type DK) { return unsigned(DK); }
5205};
5206static bool checkIfClauses(Sema &S, OpenMPDirectiveKind Kind,
5207 ArrayRef<OMPClause *> Clauses,
5208 ArrayRef<OpenMPDirectiveKind> AllowedNameModifiers) {
5209 bool ErrorFound = false;
5210 unsigned NamedModifiersNumber = 0;
5211 llvm::IndexedMap<const OMPIfClause *, Kind2Unsigned> FoundNameModifiers;
5212 FoundNameModifiers.resize(llvm::omp::Directive_enumSize + 1);
5213 SmallVector<SourceLocation, 4> NameModifierLoc;
5214 for (const OMPClause *C : Clauses) {
5215 if (const auto *IC = dyn_cast_or_null<OMPIfClause>(C)) {
5216 // At most one if clause without a directive-name-modifier can appear on
5217 // the directive.
5218 OpenMPDirectiveKind CurNM = IC->getNameModifier();
5219 if (FoundNameModifiers[CurNM]) {
5220 S.Diag(C->getBeginLoc(), diag::err_omp_more_one_clause)
5221 << getOpenMPDirectiveName(Kind) << getOpenMPClauseName(OMPC_if)
5222 << (CurNM != OMPD_unknown) << getOpenMPDirectiveName(CurNM);
5223 ErrorFound = true;
5224 } else if (CurNM != OMPD_unknown) {
5225 NameModifierLoc.push_back(IC->getNameModifierLoc());
5226 ++NamedModifiersNumber;
5227 }
5228 FoundNameModifiers[CurNM] = IC;
5229 if (CurNM == OMPD_unknown)
5230 continue;
5231 // Check if the specified name modifier is allowed for the current
5232 // directive.
5233 // At most one if clause with the particular directive-name-modifier can
5234 // appear on the directive.
5235 if (!llvm::is_contained(AllowedNameModifiers, CurNM)) {
5236 S.Diag(IC->getNameModifierLoc(),
5237 diag::err_omp_wrong_if_directive_name_modifier)
5238 << getOpenMPDirectiveName(CurNM) << getOpenMPDirectiveName(Kind);
5239 ErrorFound = true;
5240 }
5241 }
5242 }
5243 // If any if clause on the directive includes a directive-name-modifier then
5244 // all if clauses on the directive must include a directive-name-modifier.
5245 if (FoundNameModifiers[OMPD_unknown] && NamedModifiersNumber > 0) {
5246 if (NamedModifiersNumber == AllowedNameModifiers.size()) {
5247 S.Diag(FoundNameModifiers[OMPD_unknown]->getBeginLoc(),
5248 diag::err_omp_no_more_if_clause);
5249 } else {
5250 std::string Values;
5251 std::string Sep(", ");
5252 unsigned AllowedCnt = 0;
5253 unsigned TotalAllowedNum =
5254 AllowedNameModifiers.size() - NamedModifiersNumber;
5255 for (unsigned Cnt = 0, End = AllowedNameModifiers.size(); Cnt < End;
5256 ++Cnt) {
5257 OpenMPDirectiveKind NM = AllowedNameModifiers[Cnt];
5258 if (!FoundNameModifiers[NM]) {
5259 Values += "'";
5260 Values += getOpenMPDirectiveName(NM);
5261 Values += "'";
5262 if (AllowedCnt + 2 == TotalAllowedNum)
5263 Values += " or ";
5264 else if (AllowedCnt + 1 != TotalAllowedNum)
5265 Values += Sep;
5266 ++AllowedCnt;
5267 }
5268 }
5269 S.Diag(FoundNameModifiers[OMPD_unknown]->getCondition()->getBeginLoc(),
5270 diag::err_omp_unnamed_if_clause)
5271 << (TotalAllowedNum > 1) << Values;
5272 }
5273 for (SourceLocation Loc : NameModifierLoc) {
5274 S.Diag(Loc, diag::note_omp_previous_named_if_clause);
5275 }
5276 ErrorFound = true;
5277 }
5278 return ErrorFound;
5279}
5280
5281static std::pair<ValueDecl *, bool> getPrivateItem(Sema &S, Expr *&RefExpr,
5282 SourceLocation &ELoc,
5283 SourceRange &ERange,
5284 bool AllowArraySection,
5285 StringRef DiagType) {
5286 if (RefExpr->isTypeDependent() || RefExpr->isValueDependent() ||
5287 RefExpr->containsUnexpandedParameterPack())
5288 return std::make_pair(nullptr, true);
5289
5290 // OpenMP [3.1, C/C++]
5291 // A list item is a variable name.
5292 // OpenMP [2.9.3.3, Restrictions, p.1]
5293 // A variable that is part of another variable (as an array or
5294 // structure element) cannot appear in a private clause.
5295 RefExpr = RefExpr->IgnoreParens();
5296 enum {
5297 NoArrayExpr = -1,
5298 ArraySubscript = 0,
5299 OMPArraySection = 1
5300 } IsArrayExpr = NoArrayExpr;
5301 if (AllowArraySection) {
5302 if (auto *ASE = dyn_cast_or_null<ArraySubscriptExpr>(RefExpr)) {
5303 Expr *Base = ASE->getBase()->IgnoreParenImpCasts();
5304 while (auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
5305 Base = TempASE->getBase()->IgnoreParenImpCasts();
5306 RefExpr = Base;
5307 IsArrayExpr = ArraySubscript;
5308 } else if (auto *OASE = dyn_cast_or_null<OMPArraySectionExpr>(RefExpr)) {
5309 Expr *Base = OASE->getBase()->IgnoreParenImpCasts();
5310 while (auto *TempOASE = dyn_cast<OMPArraySectionExpr>(Base))
5311 Base = TempOASE->getBase()->IgnoreParenImpCasts();
5312 while (auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
5313 Base = TempASE->getBase()->IgnoreParenImpCasts();
5314 RefExpr = Base;
5315 IsArrayExpr = OMPArraySection;
5316 }
5317 }
5318 ELoc = RefExpr->getExprLoc();
5319 ERange = RefExpr->getSourceRange();
5320 RefExpr = RefExpr->IgnoreParenImpCasts();
5321 auto *DE = dyn_cast_or_null<DeclRefExpr>(RefExpr);
5322 auto *ME = dyn_cast_or_null<MemberExpr>(RefExpr);
5323 if ((!DE || !isa<VarDecl>(DE->getDecl())) &&
5324 (S.getCurrentThisType().isNull() || !ME ||
5325 !isa<CXXThisExpr>(ME->getBase()->IgnoreParenImpCasts()) ||
5326 !isa<FieldDecl>(ME->getMemberDecl()))) {
5327 if (IsArrayExpr != NoArrayExpr) {
5328 S.Diag(ELoc, diag::err_omp_expected_base_var_name)
5329 << IsArrayExpr << ERange;
5330 } else if (!DiagType.empty()) {
5331 unsigned DiagSelect = S.getLangOpts().CPlusPlus
5332 ? (S.getCurrentThisType().isNull() ? 1 : 2)
5333 : 0;
5334 S.Diag(ELoc, diag::err_omp_expected_var_name_member_expr_with_type)
5335 << DiagSelect << DiagType << ERange;
5336 } else {
5337 S.Diag(ELoc,
5338 AllowArraySection
5339 ? diag::err_omp_expected_var_name_member_expr_or_array_item
5340 : diag::err_omp_expected_var_name_member_expr)
5341 << (S.getCurrentThisType().isNull() ? 0 : 1) << ERange;
5342 }
5343 return std::make_pair(nullptr, false);
5344 }
5345 return std::make_pair(
5346 getCanonicalDecl(DE ? DE->getDecl() : ME->getMemberDecl()), false);
5347}
5348
5349namespace {
5350/// Checks if the allocator is used in uses_allocators clause to be allowed in
5351/// target regions.
5352class AllocatorChecker final : public ConstStmtVisitor<AllocatorChecker, bool> {
5353 DSAStackTy *S = nullptr;
5354
5355public:
5356 bool VisitDeclRefExpr(const DeclRefExpr *E) {
5357 return S->isUsesAllocatorsDecl(E->getDecl())
5358 .value_or(DSAStackTy::UsesAllocatorsDeclKind::AllocatorTrait) ==
5359 DSAStackTy::UsesAllocatorsDeclKind::AllocatorTrait;
5360 }
5361 bool VisitStmt(const Stmt *S) {
5362 for (const Stmt *Child : S->children()) {
5363 if (Child && Visit(Child))
5364 return true;
5365 }
5366 return false;
5367 }
5368 explicit AllocatorChecker(DSAStackTy *S) : S(S) {}
5369};
5370} // namespace
5371
5372static void checkAllocateClauses(Sema &S, DSAStackTy *Stack,
5373 ArrayRef<OMPClause *> Clauses) {
5374 assert(!S.CurContext->isDependentContext() &&(static_cast <bool> (!S.CurContext->isDependentContext
() && "Expected non-dependent context.") ? void (0) :
__assert_fail ("!S.CurContext->isDependentContext() && \"Expected non-dependent context.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 5375, __extension__ __PRETTY_FUNCTION__
))
5375 "Expected non-dependent context.")(static_cast <bool> (!S.CurContext->isDependentContext
() && "Expected non-dependent context.") ? void (0) :
__assert_fail ("!S.CurContext->isDependentContext() && \"Expected non-dependent context.\""
, "clang/lib/Sema/SemaOpenMP.cpp", 5375, __extension__ __PRETTY_FUNCTION__
))
;
5376 auto AllocateRange =
5377 llvm::make_filter_range(Clauses, OMPAllocateClause::classof);
5378 llvm::DenseMap<CanonicalDeclPtr<Decl>, CanonicalDeclPtr<VarDecl>> DeclToCopy;
5379 auto PrivateRange = llvm::make_filter_range(Clauses, [](const OMPClause *C) {
5380 return isOpenMPPrivate(C->getClauseKind());
5381 });
5382 for (OMPClause *Cl : PrivateRange) {
5383 MutableArrayRef<Expr *>::iterator I, It, Et;
5384 if (Cl->getClauseKind() == OMPC_private) {
5385 auto *PC = cast<OMPPrivateClause>(Cl);
5386 I = PC->private_copies().begin();
5387 It = PC->varlist_begin();
5388 Et = PC->varlist_end();
5389 } else if (Cl->getClauseKind() == OMPC_firstprivate) {
5390 auto *PC = cast<OMPFirstprivateClause>(Cl);
5391 I = PC->private_copies().begin();
5392 It = PC->varlist_begin();
5393 Et = PC->varlist_end();
5394 } else if (Cl->getClauseKind() == OMPC_lastprivate) {
5395 auto *PC = cast<OMPLastprivateClause>(Cl);
5396 I = PC->private_copies().begin();
5397 It = PC->varlist_begin();
5398 Et = PC->varlist_end();
5399 } else if (Cl->getClauseKind() == OMPC_linear) {
5400 auto *PC = cast<OMPLinearClause>(Cl);
5401 I = PC->privates().begin();
5402 It = PC->varlist_begin();
5403 Et = PC->varlist_end();
5404 } else if (Cl->getClauseKind() == OMPC_reduction) {
5405 auto *PC = cast<OMPReductionClause>(Cl);
5406 I = PC->privates().begin();
5407 It = PC->varlist_begin();
5408 Et = PC->varlist_end();
5409 } else if (Cl->getClauseKind() == OMPC_task_reduction) {
5410 auto *PC = cast<OMPTaskReductionClause>(Cl);
5411 I = PC->privates().begin();
5412 It = PC->varlist_begin();
5413 Et = PC->varlist_end();
5414 } else if (Cl->getClauseKind() == OMPC_in_reduction) {
5415 auto *PC = cast<OMPInReductionClause>(Cl);
5416 I = PC->privates().begin();
5417 It = PC->varlist_begin();
5418 Et = PC->varlist_end();
5419 } else {
5420 llvm_unreachable("Expected private clause.")::llvm::llvm_unreachable_internal("Expected private clause.",
"clang/lib/Sema/SemaOpenMP.cpp", 5420)
;
5421 }
5422 for (Expr *E : llvm::make_range(It, Et)) {
5423 if (!*I) {
5424 ++I;
5425 continue;
5426 }
5427 SourceLocation ELoc;
5428 SourceRange ERange;
5429 Expr *SimpleRefExpr = E;
5430 auto Res = getPrivateItem(S, SimpleRefExpr, ELoc, ERange,
5431 /*AllowArraySection=*/true);
5432 DeclToCopy.try_emplace(Res.first,
5433 cast<VarDecl>(cast<DeclRefExpr>(*I)->getDecl()));
5434 ++I;
5435 }
5436 }
5437 for (OMPClause *C : AllocateRange) {
5438 auto *AC = cast<OMPAllocateClause>(C);
5439 if (S.getLangOpts().OpenMP >= 50 &&
5440 !Stack->hasRequiresDeclWithClause<OMPDynamicAllocatorsClause>() &&
5441 isOpenMPTargetExecutionDirective(Stack->getCurrentDirective()) &&
5442 AC->getAllocator()) {
5443 Expr *Allocator = AC->getAllocator();
5444 // OpenMP, 2.12.5 target Construct
5445 // Memory allocators that do not appear in a uses_allocators clause cannot
5446 // appear as an allocator in an allocate clause or be used in the target
5447 // region unless a requires directive with the dynamic_allocators clause
5448 // is present in the same compilation unit.
5449 AllocatorChecker Checker(Stack);
5450 if (Checker.Visit(Allocator))
5451 S.Diag(Allocator->getExprLoc(),
5452 diag::err_omp_allocator_not_in_uses_allocators)
5453 << Allocator->getSourceRange();
5454 }
5455 OMPAllocateDeclAttr::AllocatorTypeTy AllocatorKind =
5456 getAllocatorKind(S, Stack, AC->getAllocator());
5457 // OpenMP, 2.11.4 allocate Clause, Restrictions.
5458 // For task, taskloop or target directives, allocation requests to memory
5459 // allocators with the trait access set to thread result in unspecified
5460 // behavior.
5461 if (AllocatorKind == OMPAllocateDeclAttr::OMPThreadMemAlloc &&
5462 (isOpenMPTaskingDirective(Stack->getCurrentDirective()) ||
5463 isOpenMPTargetExecutionDirective(Stack->getCurrentDirective()))) {
5464 S.Diag(AC->getAllocator()->getExprLoc(),
5465 diag::warn_omp_allocate_thread_on_task_target_directive)
5466 << getOpenMPDirectiveName(Stack->getCurrentDirective());
5467 }
5468 for (Expr *E : AC->varlists()) {
5469 SourceLocation ELoc;
5470 SourceRange ERange;
5471 Expr *SimpleRefExpr = E;
5472 auto Res = getPrivateItem(S, SimpleRefExpr, ELoc, ERange);
5473 ValueDecl *VD = Res.first;
5474 DSAStackTy::DSAVarData Data = Stack->getTopDSA(VD, /*FromParent=*/false);
5475 if (!isOpenMPPrivate(Data.CKind)) {
5476 S.Diag(E->getExprLoc(),
5477 diag::err_omp_expected_private_copy_for_allocate);
5478 continue;
5479 }
5480 VarDecl *PrivateVD = DeclToCopy[VD];
5481 if (checkPreviousOMPAllocateAttribute(S, Stack, E, PrivateVD,
5482 AllocatorKind, AC->getAllocator()))
5483 continue;
5484 // Placeholder until allocate clause supports align modifier.
5485 Expr *Alignment = nullptr;
5486 applyOMPAllocateAttribute(S, PrivateVD, AllocatorKind, AC->getAllocator(),
5487 Alignment, E->getSourceRange());
5488 }
5489 }
5490}
5491
5492namespace {
5493/// Rewrite statements and expressions for Sema \p Actions CurContext.
5494///
5495/// Used to wrap already parsed statements/expressions into a new CapturedStmt
5496/// context. DeclRefExpr used inside the new context are changed to refer to the
5497/// captured variable instead.
5498class CaptureVars : public TreeTransform<CaptureVars> {
5499 using BaseTransform = TreeTransform<CaptureVars>;
5500
5501public:
5502 CaptureVars(Sema &Actions) : BaseTransform(Actions) {}
5503
5504 bool AlwaysRebuild() { return true; }
5505};
5506} // namespace
5507
5508static VarDecl *precomputeExpr(Sema &Actions,
5509 SmallVectorImpl<Stmt *> &BodyStmts, Expr *E,
5510 StringRef Name) {
5511 Expr *NewE = AssertSuccess(CaptureVars(Actions).TransformExpr(E));
5512 VarDecl *NewVar = buildVarDecl(Actions, {}, NewE->getType(), Name, nullptr,
5513 dyn_cast<DeclRefExpr>(E->IgnoreImplicit()));
5514 auto *NewDeclStmt = cast<DeclStmt>(AssertSuccess(
5515 Actions.ActOnDeclStmt(Actions.ConvertDeclToDeclGroup(NewVar), {}, {})));
5516 Actions.AddInitializerToDecl(NewDeclStmt->getSingleDecl(), NewE, false);
5517 BodyStmts.push_back(NewDeclStmt);
5518 return NewVar;
5519}
5520
5521/// Create a closure that computes the number of iterations of a loop.
5522///
5523/// \param Actions The Sema object.
5524/// \param LogicalTy Type for the logical iteration number.
5525/// \param Rel Comparison operator of the loop condition.
5526/// \param StartExpr Value of the loop counter at the first iteration.
5527/// \param StopExpr Expression the loop counter is compared against in the loop
5528/// condition. \param StepExpr Amount of increment after each iteration.
5529///
5530/// \return Closure (CapturedStmt) of the distance calculation.
5531static CapturedStmt *buildDistanceFunc(Sema &Actions, QualType LogicalTy,
5532 BinaryOperator::Opcode Rel,
5533 Expr *StartExpr, Expr *StopExpr,
5534 Expr *StepExpr) {
5535 ASTContext &Ctx = Actions.getASTContext();
5536 TypeSourceInfo *LogicalTSI = Ctx.getTrivialTypeSourceInfo(LogicalTy);
5537
5538 // Captured regions currently don't support return values, we use an
5539 // out-parameter instead. All inputs are implicit captures.
5540 // TODO: Instead of capturing each DeclRefExpr occurring in
5541 // StartExpr/StopExpr/Step, these could also be passed as a value capture.
5542 QualType ResultTy = Ctx.getLValueReferenceType(LogicalTy);
5543 Sema::CapturedParamNameType Params[] = {{"Distance", ResultTy},
5544 {StringRef(), QualType()}};
5545 Actions.ActOnCapturedRegionStart({}, nullptr, CR_Default, Params);
5546
5547 Stmt *Body;
5548 {
5549 Sema::CompoundScopeRAII CompoundScope(Actions);
5550 CapturedDecl *CS = cast<CapturedDecl>(Actions.CurContext);
5551
5552 // Get the LValue expression for the result.
5553 ImplicitParamDecl *DistParam = CS->getParam(0);
5554 DeclRefExpr *DistRef = Actions.BuildDeclRefExpr(
5555 DistParam, LogicalTy, VK_LValue, {}, nullptr, nullptr, {}, nullptr);
5556
5557 SmallVector<Stmt *, 4> BodyStmts;
5558
5559 // Capture a