Bug Summary

File:tools/clang/lib/Sema/SemaOpenMP.cpp
Location:line 1014, column 38
Description:Called C++ object pointer is null

Annotated Source Code

1//===--- SemaOpenMP.cpp - Semantic Analysis for OpenMP constructs ---------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9/// \file
10/// \brief This file implements semantic analysis for OpenMP directives and
11/// clauses.
12///
13//===----------------------------------------------------------------------===//
14
15#include "TreeTransform.h"
16#include "clang/AST/ASTContext.h"
17#include "clang/AST/ASTMutationListener.h"
18#include "clang/AST/CXXInheritance.h"
19#include "clang/AST/Decl.h"
20#include "clang/AST/DeclCXX.h"
21#include "clang/AST/DeclOpenMP.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/OpenMPKinds.h"
27#include "clang/Basic/TargetInfo.h"
28#include "clang/Lex/Preprocessor.h"
29#include "clang/Sema/Initialization.h"
30#include "clang/Sema/Lookup.h"
31#include "clang/Sema/Scope.h"
32#include "clang/Sema/ScopeInfo.h"
33#include "clang/Sema/SemaInternal.h"
34using namespace clang;
35
36//===----------------------------------------------------------------------===//
37// Stack of data-sharing attributes for variables
38//===----------------------------------------------------------------------===//
39
40namespace {
41/// \brief Default data sharing attributes, which can be applied to directive.
42enum DefaultDataSharingAttributes {
43 DSA_unspecified = 0, /// \brief Data sharing attribute not specified.
44 DSA_none = 1 << 0, /// \brief Default data sharing attribute 'none'.
45 DSA_shared = 1 << 1 /// \brief Default data sharing attribute 'shared'.
46};
47
48/// \brief Stack for tracking declarations used in OpenMP directives and
49/// clauses and their data-sharing attributes.
50class DSAStackTy final {
51public:
52 struct DSAVarData final {
53 OpenMPDirectiveKind DKind = OMPD_unknown;
54 OpenMPClauseKind CKind = OMPC_unknown;
55 Expr *RefExpr = nullptr;
56 DeclRefExpr *PrivateCopy = nullptr;
57 SourceLocation ImplicitDSALoc;
58 DSAVarData() {}
59 };
60 typedef llvm::SmallVector<std::pair<Expr *, OverloadedOperatorKind>, 4>
61 OperatorOffsetTy;
62
63private:
64 struct DSAInfo final {
65 OpenMPClauseKind Attributes = OMPC_unknown;
66 /// Pointer to a reference expression and a flag which shows that the
67 /// variable is marked as lastprivate(true) or not (false).
68 llvm::PointerIntPair<Expr *, 1, bool> RefExpr;
69 DeclRefExpr *PrivateCopy = nullptr;
70 };
71 typedef llvm::DenseMap<ValueDecl *, DSAInfo> DeclSAMapTy;
72 typedef llvm::DenseMap<ValueDecl *, Expr *> AlignedMapTy;
73 typedef std::pair<unsigned, VarDecl *> LCDeclInfo;
74 typedef llvm::DenseMap<ValueDecl *, LCDeclInfo> LoopControlVariablesMapTy;
75 typedef llvm::DenseMap<
76 ValueDecl *, OMPClauseMappableExprCommon::MappableExprComponentLists>
77 MappedExprComponentsTy;
78 typedef llvm::StringMap<std::pair<OMPCriticalDirective *, llvm::APSInt>>
79 CriticalsWithHintsTy;
80 typedef llvm::DenseMap<OMPDependClause *, OperatorOffsetTy>
81 DoacrossDependMapTy;
82
83 struct SharingMapTy final {
84 DeclSAMapTy SharingMap;
85 AlignedMapTy AlignedMap;
86 MappedExprComponentsTy MappedExprComponents;
87 LoopControlVariablesMapTy LCVMap;
88 DefaultDataSharingAttributes DefaultAttr = DSA_unspecified;
89 SourceLocation DefaultAttrLoc;
90 OpenMPDirectiveKind Directive = OMPD_unknown;
91 DeclarationNameInfo DirectiveName;
92 Scope *CurScope = nullptr;
93 SourceLocation ConstructLoc;
94 /// Set of 'depend' clauses with 'sink|source' dependence kind. Required to
95 /// get the data (loop counters etc.) about enclosing loop-based construct.
96 /// This data is required during codegen.
97 DoacrossDependMapTy DoacrossDepends;
98 /// \brief first argument (Expr *) contains optional argument of the
99 /// 'ordered' clause, the second one is true if the regions has 'ordered'
100 /// clause, false otherwise.
101 llvm::PointerIntPair<Expr *, 1, bool> OrderedRegion;
102 bool NowaitRegion = false;
103 bool CancelRegion = false;
104 unsigned AssociatedLoops = 1;
105 SourceLocation InnerTeamsRegionLoc;
106 SharingMapTy(OpenMPDirectiveKind DKind, DeclarationNameInfo Name,
107 Scope *CurScope, SourceLocation Loc)
108 : Directive(DKind), DirectiveName(Name), CurScope(CurScope),
109 ConstructLoc(Loc) {}
110 SharingMapTy() {}
111 };
112
113 typedef SmallVector<SharingMapTy, 4> StackTy;
114
115 /// \brief Stack of used declaration and their data-sharing attributes.
116 StackTy Stack;
117 /// \brief true, if check for DSA must be from parent directive, false, if
118 /// from current directive.
119 OpenMPClauseKind ClauseKindMode = OMPC_unknown;
120 Sema &SemaRef;
121 bool ForceCapturing = false;
122 CriticalsWithHintsTy Criticals;
123
124 typedef SmallVector<SharingMapTy, 8>::reverse_iterator reverse_iterator;
125
126 DSAVarData getDSA(StackTy::reverse_iterator& Iter, ValueDecl *D);
127
128 /// \brief Checks if the variable is a local for OpenMP region.
129 bool isOpenMPLocal(VarDecl *D, StackTy::reverse_iterator Iter);
130
131public:
132 explicit DSAStackTy(Sema &S) : Stack(1), SemaRef(S) {}
133
134 bool isClauseParsingMode() const { return ClauseKindMode != OMPC_unknown; }
135 void setClauseParsingMode(OpenMPClauseKind K) { ClauseKindMode = K; }
136
137 bool isForceVarCapturing() const { return ForceCapturing; }
138 void setForceVarCapturing(bool V) { ForceCapturing = V; }
139
140 void push(OpenMPDirectiveKind DKind, const DeclarationNameInfo &DirName,
141 Scope *CurScope, SourceLocation Loc) {
142 Stack.push_back(SharingMapTy(DKind, DirName, CurScope, Loc));
143 Stack.back().DefaultAttrLoc = Loc;
144 }
145
146 void pop() {
147 assert(Stack.size() > 1 && "Data-sharing attributes stack is empty!")((Stack.size() > 1 && "Data-sharing attributes stack is empty!"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Data-sharing attributes stack is empty!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 147, __PRETTY_FUNCTION__));
148 Stack.pop_back();
149 }
150
151 void addCriticalWithHint(OMPCriticalDirective *D, llvm::APSInt Hint) {
152 Criticals[D->getDirectiveName().getAsString()] = std::make_pair(D, Hint);
153 }
154 const std::pair<OMPCriticalDirective *, llvm::APSInt>
155 getCriticalWithHint(const DeclarationNameInfo &Name) const {
156 auto I = Criticals.find(Name.getAsString());
157 if (I != Criticals.end())
158 return I->second;
159 return std::make_pair(nullptr, llvm::APSInt());
160 }
161 /// \brief If 'aligned' declaration for given variable \a D was not seen yet,
162 /// add it and return NULL; otherwise return previous occurrence's expression
163 /// for diagnostics.
164 Expr *addUniqueAligned(ValueDecl *D, Expr *NewDE);
165
166 /// \brief Register specified variable as loop control variable.
167 void addLoopControlVariable(ValueDecl *D, VarDecl *Capture);
168 /// \brief Check if the specified variable is a loop control variable for
169 /// current region.
170 /// \return The index of the loop control variable in the list of associated
171 /// for-loops (from outer to inner).
172 LCDeclInfo isLoopControlVariable(ValueDecl *D);
173 /// \brief Check if the specified variable is a loop control variable for
174 /// parent region.
175 /// \return The index of the loop control variable in the list of associated
176 /// for-loops (from outer to inner).
177 LCDeclInfo isParentLoopControlVariable(ValueDecl *D);
178 /// \brief Get the loop control variable for the I-th loop (or nullptr) in
179 /// parent directive.
180 ValueDecl *getParentLoopControlVariable(unsigned I);
181
182 /// \brief Adds explicit data sharing attribute to the specified declaration.
183 void addDSA(ValueDecl *D, Expr *E, OpenMPClauseKind A,
184 DeclRefExpr *PrivateCopy = nullptr);
185
186 /// \brief Returns data sharing attributes from top of the stack for the
187 /// specified declaration.
188 DSAVarData getTopDSA(ValueDecl *D, bool FromParent);
189 /// \brief Returns data-sharing attributes for the specified declaration.
190 DSAVarData getImplicitDSA(ValueDecl *D, bool FromParent);
191 /// \brief Checks if the specified variables has data-sharing attributes which
192 /// match specified \a CPred predicate in any directive which matches \a DPred
193 /// predicate.
194 DSAVarData hasDSA(ValueDecl *D,
195 const llvm::function_ref<bool(OpenMPClauseKind)> &CPred,
196 const llvm::function_ref<bool(OpenMPDirectiveKind)> &DPred,
197 bool FromParent);
198 /// \brief Checks if the specified variables has data-sharing attributes which
199 /// match specified \a CPred predicate in any innermost directive which
200 /// matches \a DPred predicate.
201 DSAVarData
202 hasInnermostDSA(ValueDecl *D,
203 const llvm::function_ref<bool(OpenMPClauseKind)> &CPred,
204 const llvm::function_ref<bool(OpenMPDirectiveKind)> &DPred,
205 bool FromParent);
206 /// \brief Checks if the specified variables has explicit data-sharing
207 /// attributes which match specified \a CPred predicate at the specified
208 /// OpenMP region.
209 bool hasExplicitDSA(ValueDecl *D,
210 const llvm::function_ref<bool(OpenMPClauseKind)> &CPred,
211 unsigned Level, bool NotLastprivate = false);
212
213 /// \brief Returns true if the directive at level \Level matches in the
214 /// specified \a DPred predicate.
215 bool hasExplicitDirective(
216 const llvm::function_ref<bool(OpenMPDirectiveKind)> &DPred,
217 unsigned Level);
218
219 /// \brief Finds a directive which matches specified \a DPred predicate.
220 bool hasDirective(const llvm::function_ref<bool(OpenMPDirectiveKind,
221 const DeclarationNameInfo &,
222 SourceLocation)> &DPred,
223 bool FromParent);
224
225 /// \brief Returns currently analyzed directive.
226 OpenMPDirectiveKind getCurrentDirective() const {
227 return Stack.back().Directive;
228 }
229 /// \brief Returns parent directive.
230 OpenMPDirectiveKind getParentDirective() const {
231 if (Stack.size() > 2)
232 return Stack[Stack.size() - 2].Directive;
233 return OMPD_unknown;
234 }
235
236 /// \brief Set default data sharing attribute to none.
237 void setDefaultDSANone(SourceLocation Loc) {
238 Stack.back().DefaultAttr = DSA_none;
239 Stack.back().DefaultAttrLoc = Loc;
240 }
241 /// \brief Set default data sharing attribute to shared.
242 void setDefaultDSAShared(SourceLocation Loc) {
243 Stack.back().DefaultAttr = DSA_shared;
244 Stack.back().DefaultAttrLoc = Loc;
245 }
246
247 DefaultDataSharingAttributes getDefaultDSA() const {
248 return Stack.back().DefaultAttr;
249 }
250 SourceLocation getDefaultDSALocation() const {
251 return Stack.back().DefaultAttrLoc;
252 }
253
254 /// \brief Checks if the specified variable is a threadprivate.
255 bool isThreadPrivate(VarDecl *D) {
256 DSAVarData DVar = getTopDSA(D, false);
257 return isOpenMPThreadPrivate(DVar.CKind);
258 }
259
260 /// \brief Marks current region as ordered (it has an 'ordered' clause).
261 void setOrderedRegion(bool IsOrdered, Expr *Param) {
262 Stack.back().OrderedRegion.setInt(IsOrdered);
263 Stack.back().OrderedRegion.setPointer(Param);
264 }
265 /// \brief Returns true, if parent region is ordered (has associated
266 /// 'ordered' clause), false - otherwise.
267 bool isParentOrderedRegion() const {
268 if (Stack.size() > 2)
269 return Stack[Stack.size() - 2].OrderedRegion.getInt();
270 return false;
271 }
272 /// \brief Returns optional parameter for the ordered region.
273 Expr *getParentOrderedRegionParam() const {
274 if (Stack.size() > 2)
275 return Stack[Stack.size() - 2].OrderedRegion.getPointer();
276 return nullptr;
277 }
278 /// \brief Marks current region as nowait (it has a 'nowait' clause).
279 void setNowaitRegion(bool IsNowait = true) {
280 Stack.back().NowaitRegion = IsNowait;
281 }
282 /// \brief Returns true, if parent region is nowait (has associated
283 /// 'nowait' clause), false - otherwise.
284 bool isParentNowaitRegion() const {
285 if (Stack.size() > 2)
286 return Stack[Stack.size() - 2].NowaitRegion;
287 return false;
288 }
289 /// \brief Marks parent region as cancel region.
290 void setParentCancelRegion(bool Cancel = true) {
291 if (Stack.size() > 2)
292 Stack[Stack.size() - 2].CancelRegion =
293 Stack[Stack.size() - 2].CancelRegion || Cancel;
294 }
295 /// \brief Return true if current region has inner cancel construct.
296 bool isCancelRegion() const {
297 return Stack.back().CancelRegion;
298 }
299
300 /// \brief Set collapse value for the region.
301 void setAssociatedLoops(unsigned Val) { Stack.back().AssociatedLoops = Val; }
302 /// \brief Return collapse value for region.
303 unsigned getAssociatedLoops() const { return Stack.back().AssociatedLoops; }
304
305 /// \brief Marks current target region as one with closely nested teams
306 /// region.
307 void setParentTeamsRegionLoc(SourceLocation TeamsRegionLoc) {
308 if (Stack.size() > 2)
309 Stack[Stack.size() - 2].InnerTeamsRegionLoc = TeamsRegionLoc;
310 }
311 /// \brief Returns true, if current region has closely nested teams region.
312 bool hasInnerTeamsRegion() const {
313 return getInnerTeamsRegionLoc().isValid();
314 }
315 /// \brief Returns location of the nested teams region (if any).
316 SourceLocation getInnerTeamsRegionLoc() const {
317 if (Stack.size() > 1)
318 return Stack.back().InnerTeamsRegionLoc;
319 return SourceLocation();
320 }
321
322 Scope *getCurScope() const { return Stack.back().CurScope; }
323 Scope *getCurScope() { return Stack.back().CurScope; }
324 SourceLocation getConstructLoc() { return Stack.back().ConstructLoc; }
325
326 // Do the check specified in \a Check to all component lists and return true
327 // if any issue is found.
328 bool checkMappableExprComponentListsForDecl(
329 ValueDecl *VD, bool CurrentRegionOnly,
330 const llvm::function_ref<bool(
331 OMPClauseMappableExprCommon::MappableExprComponentListRef)> &Check) {
332 auto SI = Stack.rbegin();
333 auto SE = Stack.rend();
334
335 if (SI == SE)
336 return false;
337
338 if (CurrentRegionOnly) {
339 SE = std::next(SI);
340 } else {
341 ++SI;
342 }
343
344 for (; SI != SE; ++SI) {
345 auto MI = SI->MappedExprComponents.find(VD);
346 if (MI != SI->MappedExprComponents.end())
347 for (auto &L : MI->second)
348 if (Check(L))
349 return true;
350 }
351 return false;
352 }
353
354 // Create a new mappable expression component list associated with a given
355 // declaration and initialize it with the provided list of components.
356 void addMappableExpressionComponents(
357 ValueDecl *VD,
358 OMPClauseMappableExprCommon::MappableExprComponentListRef Components) {
359 assert(Stack.size() > 1 &&((Stack.size() > 1 && "Not expecting to retrieve components from a empty stack!"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Not expecting to retrieve components from a empty stack!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 360, __PRETTY_FUNCTION__))
360 "Not expecting to retrieve components from a empty stack!")((Stack.size() > 1 && "Not expecting to retrieve components from a empty stack!"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Not expecting to retrieve components from a empty stack!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 360, __PRETTY_FUNCTION__));
361 auto &MEC = Stack.back().MappedExprComponents[VD];
362 // Create new entry and append the new components there.
363 MEC.resize(MEC.size() + 1);
364 MEC.back().append(Components.begin(), Components.end());
365 }
366
367 unsigned getNestingLevel() const {
368 assert(Stack.size() > 1)((Stack.size() > 1) ? static_cast<void> (0) : __assert_fail
("Stack.size() > 1", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 368, __PRETTY_FUNCTION__));
369 return Stack.size() - 2;
370 }
371 void addDoacrossDependClause(OMPDependClause *C, OperatorOffsetTy &OpsOffs) {
372 assert(Stack.size() > 2)((Stack.size() > 2) ? static_cast<void> (0) : __assert_fail
("Stack.size() > 2", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 372, __PRETTY_FUNCTION__));
373 assert(isOpenMPWorksharingDirective(Stack[Stack.size() - 2].Directive))((isOpenMPWorksharingDirective(Stack[Stack.size() - 2].Directive
)) ? static_cast<void> (0) : __assert_fail ("isOpenMPWorksharingDirective(Stack[Stack.size() - 2].Directive)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 373, __PRETTY_FUNCTION__));
374 Stack[Stack.size() - 2].DoacrossDepends.insert({C, OpsOffs});
375 }
376 llvm::iterator_range<DoacrossDependMapTy::const_iterator>
377 getDoacrossDependClauses() const {
378 assert(Stack.size() > 1)((Stack.size() > 1) ? static_cast<void> (0) : __assert_fail
("Stack.size() > 1", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 378, __PRETTY_FUNCTION__));
379 if (isOpenMPWorksharingDirective(Stack[Stack.size() - 1].Directive)) {
380 auto &Ref = Stack[Stack.size() - 1].DoacrossDepends;
381 return llvm::make_range(Ref.begin(), Ref.end());
382 }
383 return llvm::make_range(Stack[0].DoacrossDepends.end(),
384 Stack[0].DoacrossDepends.end());
385 }
386};
387bool isParallelOrTaskRegion(OpenMPDirectiveKind DKind) {
388 return isOpenMPParallelDirective(DKind) || isOpenMPTaskingDirective(DKind) ||
389 isOpenMPTeamsDirective(DKind) || DKind == OMPD_unknown;
390}
391} // namespace
392
393static ValueDecl *getCanonicalDecl(ValueDecl *D) {
394 auto *VD = dyn_cast<VarDecl>(D);
395 auto *FD = dyn_cast<FieldDecl>(D);
396 if (VD != nullptr) {
397 VD = VD->getCanonicalDecl();
398 D = VD;
399 } else {
400 assert(FD)((FD) ? static_cast<void> (0) : __assert_fail ("FD", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 400, __PRETTY_FUNCTION__));
401 FD = FD->getCanonicalDecl();
402 D = FD;
403 }
404 return D;
405}
406
407DSAStackTy::DSAVarData DSAStackTy::getDSA(StackTy::reverse_iterator& Iter,
408 ValueDecl *D) {
409 D = getCanonicalDecl(D);
410 auto *VD = dyn_cast<VarDecl>(D);
411 auto *FD = dyn_cast<FieldDecl>(D);
412 DSAVarData DVar;
413 if (Iter == std::prev(Stack.rend())) {
414 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
415 // in a region but not in construct]
416 // File-scope or namespace-scope variables referenced in called routines
417 // in the region are shared unless they appear in a threadprivate
418 // directive.
419 if (VD && !VD->isFunctionOrMethodVarDecl() && !isa<ParmVarDecl>(D))
420 DVar.CKind = OMPC_shared;
421
422 // OpenMP [2.9.1.2, Data-sharing Attribute Rules for Variables Referenced
423 // in a region but not in construct]
424 // Variables with static storage duration that are declared in called
425 // routines in the region are shared.
426 if (VD && VD->hasGlobalStorage())
427 DVar.CKind = OMPC_shared;
428
429 // Non-static data members are shared by default.
430 if (FD)
431 DVar.CKind = OMPC_shared;
432
433 return DVar;
434 }
435
436 DVar.DKind = Iter->Directive;
437 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
438 // in a Construct, C/C++, predetermined, p.1]
439 // Variables with automatic storage duration that are declared in a scope
440 // inside the construct are private.
441 if (VD && isOpenMPLocal(VD, Iter) && VD->isLocalVarDecl() &&
442 (VD->getStorageClass() == SC_Auto || VD->getStorageClass() == SC_None)) {
443 DVar.CKind = OMPC_private;
444 return DVar;
445 }
446
447 // Explicitly specified attributes and local variables with predetermined
448 // attributes.
449 if (Iter->SharingMap.count(D)) {
450 DVar.RefExpr = Iter->SharingMap[D].RefExpr.getPointer();
451 DVar.PrivateCopy = Iter->SharingMap[D].PrivateCopy;
452 DVar.CKind = Iter->SharingMap[D].Attributes;
453 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
454 return DVar;
455 }
456
457 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
458 // in a Construct, C/C++, implicitly determined, p.1]
459 // In a parallel or task construct, the data-sharing attributes of these
460 // variables are determined by the default clause, if present.
461 switch (Iter->DefaultAttr) {
462 case DSA_shared:
463 DVar.CKind = OMPC_shared;
464 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
465 return DVar;
466 case DSA_none:
467 return DVar;
468 case DSA_unspecified:
469 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
470 // in a Construct, implicitly determined, p.2]
471 // In a parallel construct, if no default clause is present, these
472 // variables are shared.
473 DVar.ImplicitDSALoc = Iter->DefaultAttrLoc;
474 if (isOpenMPParallelDirective(DVar.DKind) ||
475 isOpenMPTeamsDirective(DVar.DKind)) {
476 DVar.CKind = OMPC_shared;
477 return DVar;
478 }
479
480 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
481 // in a Construct, implicitly determined, p.4]
482 // In a task construct, if no default clause is present, a variable that in
483 // the enclosing context is determined to be shared by all implicit tasks
484 // bound to the current team is shared.
485 if (isOpenMPTaskingDirective(DVar.DKind)) {
486 DSAVarData DVarTemp;
487 for (StackTy::reverse_iterator I = std::next(Iter), EE = Stack.rend();
488 I != EE; ++I) {
489 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables
490 // Referenced in a Construct, implicitly determined, p.6]
491 // In a task construct, if no default clause is present, a variable
492 // whose data-sharing attribute is not determined by the rules above is
493 // firstprivate.
494 DVarTemp = getDSA(I, D);
495 if (DVarTemp.CKind != OMPC_shared) {
496 DVar.RefExpr = nullptr;
497 DVar.CKind = OMPC_firstprivate;
498 return DVar;
499 }
500 if (isParallelOrTaskRegion(I->Directive))
501 break;
502 }
503 DVar.CKind =
504 (DVarTemp.CKind == OMPC_unknown) ? OMPC_firstprivate : OMPC_shared;
505 return DVar;
506 }
507 }
508 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
509 // in a Construct, implicitly determined, p.3]
510 // For constructs other than task, if no default clause is present, these
511 // variables inherit their data-sharing attributes from the enclosing
512 // context.
513 return getDSA(++Iter, D);
514}
515
516Expr *DSAStackTy::addUniqueAligned(ValueDecl *D, Expr *NewDE) {
517 assert(Stack.size() > 1 && "Data sharing attributes stack is empty")((Stack.size() > 1 && "Data sharing attributes stack is empty"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Data sharing attributes stack is empty\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 517, __PRETTY_FUNCTION__));
518 D = getCanonicalDecl(D);
519 auto It = Stack.back().AlignedMap.find(D);
520 if (It == Stack.back().AlignedMap.end()) {
521 assert(NewDE && "Unexpected nullptr expr to be added into aligned map")((NewDE && "Unexpected nullptr expr to be added into aligned map"
) ? static_cast<void> (0) : __assert_fail ("NewDE && \"Unexpected nullptr expr to be added into aligned map\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 521, __PRETTY_FUNCTION__));
522 Stack.back().AlignedMap[D] = NewDE;
523 return nullptr;
524 } else {
525 assert(It->second && "Unexpected nullptr expr in the aligned map")((It->second && "Unexpected nullptr expr in the aligned map"
) ? static_cast<void> (0) : __assert_fail ("It->second && \"Unexpected nullptr expr in the aligned map\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 525, __PRETTY_FUNCTION__));
526 return It->second;
527 }
528 return nullptr;
529}
530
531void DSAStackTy::addLoopControlVariable(ValueDecl *D, VarDecl *Capture) {
532 assert(Stack.size() > 1 && "Data-sharing attributes stack is empty")((Stack.size() > 1 && "Data-sharing attributes stack is empty"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Data-sharing attributes stack is empty\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 532, __PRETTY_FUNCTION__));
533 D = getCanonicalDecl(D);
534 Stack.back().LCVMap.insert(
535 std::make_pair(D, LCDeclInfo(Stack.back().LCVMap.size() + 1, Capture)));
536}
537
538DSAStackTy::LCDeclInfo DSAStackTy::isLoopControlVariable(ValueDecl *D) {
539 assert(Stack.size() > 1 && "Data-sharing attributes stack is empty")((Stack.size() > 1 && "Data-sharing attributes stack is empty"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Data-sharing attributes stack is empty\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 539, __PRETTY_FUNCTION__));
540 D = getCanonicalDecl(D);
541 return Stack.back().LCVMap.count(D) > 0 ? Stack.back().LCVMap[D]
542 : LCDeclInfo(0, nullptr);
543}
544
545DSAStackTy::LCDeclInfo DSAStackTy::isParentLoopControlVariable(ValueDecl *D) {
546 assert(Stack.size() > 2 && "Data-sharing attributes stack is empty")((Stack.size() > 2 && "Data-sharing attributes stack is empty"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 2 && \"Data-sharing attributes stack is empty\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 546, __PRETTY_FUNCTION__));
547 D = getCanonicalDecl(D);
548 return Stack[Stack.size() - 2].LCVMap.count(D) > 0
549 ? Stack[Stack.size() - 2].LCVMap[D]
550 : LCDeclInfo(0, nullptr);
551}
552
553ValueDecl *DSAStackTy::getParentLoopControlVariable(unsigned I) {
554 assert(Stack.size() > 2 && "Data-sharing attributes stack is empty")((Stack.size() > 2 && "Data-sharing attributes stack is empty"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 2 && \"Data-sharing attributes stack is empty\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 554, __PRETTY_FUNCTION__));
555 if (Stack[Stack.size() - 2].LCVMap.size() < I)
556 return nullptr;
557 for (auto &Pair : Stack[Stack.size() - 2].LCVMap) {
558 if (Pair.second.first == I)
559 return Pair.first;
560 }
561 return nullptr;
562}
563
564void DSAStackTy::addDSA(ValueDecl *D, Expr *E, OpenMPClauseKind A,
565 DeclRefExpr *PrivateCopy) {
566 D = getCanonicalDecl(D);
567 if (A == OMPC_threadprivate) {
568 auto &Data = Stack[0].SharingMap[D];
569 Data.Attributes = A;
570 Data.RefExpr.setPointer(E);
571 Data.PrivateCopy = nullptr;
572 } else {
573 assert(Stack.size() > 1 && "Data-sharing attributes stack is empty")((Stack.size() > 1 && "Data-sharing attributes stack is empty"
) ? static_cast<void> (0) : __assert_fail ("Stack.size() > 1 && \"Data-sharing attributes stack is empty\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 573, __PRETTY_FUNCTION__));
574 auto &Data = Stack.back().SharingMap[D];
575 assert(Data.Attributes == OMPC_unknown || (A == Data.Attributes) ||((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
)) ? static_cast<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)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 578, __PRETTY_FUNCTION__))
576 (A == OMPC_firstprivate && Data.Attributes == OMPC_lastprivate) ||((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
)) ? static_cast<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)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 578, __PRETTY_FUNCTION__))
577 (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) ||((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
)) ? static_cast<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)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 578, __PRETTY_FUNCTION__))
578 (isLoopControlVariable(D).first && A == OMPC_private))((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
)) ? static_cast<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)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 578, __PRETTY_FUNCTION__));
579 if (A == OMPC_lastprivate && Data.Attributes == OMPC_firstprivate) {
580 Data.RefExpr.setInt(/*IntVal=*/true);
581 return;
582 }
583 const bool IsLastprivate =
584 A == OMPC_lastprivate || Data.Attributes == OMPC_lastprivate;
585 Data.Attributes = A;
586 Data.RefExpr.setPointerAndInt(E, IsLastprivate);
587 Data.PrivateCopy = PrivateCopy;
588 if (PrivateCopy) {
589 auto &Data = Stack.back().SharingMap[PrivateCopy->getDecl()];
590 Data.Attributes = A;
591 Data.RefExpr.setPointerAndInt(PrivateCopy, IsLastprivate);
592 Data.PrivateCopy = nullptr;
593 }
594 }
595}
596
597bool DSAStackTy::isOpenMPLocal(VarDecl *D, StackTy::reverse_iterator Iter) {
598 D = D->getCanonicalDecl();
599 if (Stack.size() > 2) {
600 reverse_iterator I = Iter, E = std::prev(Stack.rend());
601 Scope *TopScope = nullptr;
602 while (I != E && !isParallelOrTaskRegion(I->Directive)) {
603 ++I;
604 }
605 if (I == E)
606 return false;
607 TopScope = I->CurScope ? I->CurScope->getParent() : nullptr;
608 Scope *CurScope = getCurScope();
609 while (CurScope != TopScope && !CurScope->isDeclScope(D)) {
610 CurScope = CurScope->getParent();
611 }
612 return CurScope != TopScope;
613 }
614 return false;
615}
616
617/// \brief Build a variable declaration for OpenMP loop iteration variable.
618static VarDecl *buildVarDecl(Sema &SemaRef, SourceLocation Loc, QualType Type,
619 StringRef Name, const AttrVec *Attrs = nullptr) {
620 DeclContext *DC = SemaRef.CurContext;
621 IdentifierInfo *II = &SemaRef.PP.getIdentifierTable().get(Name);
622 TypeSourceInfo *TInfo = SemaRef.Context.getTrivialTypeSourceInfo(Type, Loc);
623 VarDecl *Decl =
624 VarDecl::Create(SemaRef.Context, DC, Loc, Loc, II, Type, TInfo, SC_None);
625 if (Attrs) {
626 for (specific_attr_iterator<AlignedAttr> I(Attrs->begin()), E(Attrs->end());
627 I != E; ++I)
628 Decl->addAttr(*I);
629 }
630 Decl->setImplicit();
631 return Decl;
632}
633
634static DeclRefExpr *buildDeclRefExpr(Sema &S, VarDecl *D, QualType Ty,
635 SourceLocation Loc,
636 bool RefersToCapture = false) {
637 D->setReferenced();
638 D->markUsed(S.Context);
639 return DeclRefExpr::Create(S.getASTContext(), NestedNameSpecifierLoc(),
640 SourceLocation(), D, RefersToCapture, Loc, Ty,
641 VK_LValue);
642}
643
644DSAStackTy::DSAVarData DSAStackTy::getTopDSA(ValueDecl *D, bool FromParent) {
645 D = getCanonicalDecl(D);
646 DSAVarData DVar;
647
648 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
649 // in a Construct, C/C++, predetermined, p.1]
650 // Variables appearing in threadprivate directives are threadprivate.
651 auto *VD = dyn_cast<VarDecl>(D);
652 if ((VD && VD->getTLSKind() != VarDecl::TLS_None &&
653 !(VD->hasAttr<OMPThreadPrivateDeclAttr>() &&
654 SemaRef.getLangOpts().OpenMPUseTLS &&
655 SemaRef.getASTContext().getTargetInfo().isTLSSupported())) ||
656 (VD && VD->getStorageClass() == SC_Register &&
657 VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl())) {
658 addDSA(D, buildDeclRefExpr(SemaRef, VD, D->getType().getNonReferenceType(),
659 D->getLocation()),
660 OMPC_threadprivate);
661 }
662 if (Stack[0].SharingMap.count(D)) {
663 DVar.RefExpr = Stack[0].SharingMap[D].RefExpr.getPointer();
664 DVar.CKind = OMPC_threadprivate;
665 return DVar;
666 }
667
668 if (Stack.size() == 1) {
669 // Not in OpenMP execution region and top scope was already checked.
670 return DVar;
671 }
672
673 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
674 // in a Construct, C/C++, predetermined, p.4]
675 // Static data members are shared.
676 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
677 // in a Construct, C/C++, predetermined, p.7]
678 // Variables with static storage duration that are declared in a scope
679 // inside the construct are shared.
680 auto &&MatchesAlways = [](OpenMPDirectiveKind) -> bool { return true; };
681 if (VD && VD->isStaticDataMember()) {
682 DSAVarData DVarTemp = hasDSA(D, isOpenMPPrivate, MatchesAlways, FromParent);
683 if (DVarTemp.CKind != OMPC_unknown && DVarTemp.RefExpr)
684 return DVar;
685
686 DVar.CKind = OMPC_shared;
687 return DVar;
688 }
689
690 QualType Type = D->getType().getNonReferenceType().getCanonicalType();
691 bool IsConstant = Type.isConstant(SemaRef.getASTContext());
692 Type = SemaRef.getASTContext().getBaseElementType(Type);
693 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
694 // in a Construct, C/C++, predetermined, p.6]
695 // Variables with const qualified type having no mutable member are
696 // shared.
697 CXXRecordDecl *RD =
698 SemaRef.getLangOpts().CPlusPlus ? Type->getAsCXXRecordDecl() : nullptr;
699 if (auto *CTSD = dyn_cast_or_null<ClassTemplateSpecializationDecl>(RD))
700 if (auto *CTD = CTSD->getSpecializedTemplate())
701 RD = CTD->getTemplatedDecl();
702 if (IsConstant &&
703 !(SemaRef.getLangOpts().CPlusPlus && RD && RD->hasDefinition() &&
704 RD->hasMutableFields())) {
705 // Variables with const-qualified type having no mutable member may be
706 // listed in a firstprivate clause, even if they are static data members.
707 DSAVarData DVarTemp = hasDSA(
708 D, [](OpenMPClauseKind C) -> bool { return C == OMPC_firstprivate; },
709 MatchesAlways, FromParent);
710 if (DVarTemp.CKind == OMPC_firstprivate && DVarTemp.RefExpr)
711 return DVar;
712
713 DVar.CKind = OMPC_shared;
714 return DVar;
715 }
716
717 // Explicitly specified attributes and local variables with predetermined
718 // attributes.
719 auto StartI = std::next(Stack.rbegin());
720 auto EndI = std::prev(Stack.rend());
721 if (FromParent && StartI != EndI) {
722 StartI = std::next(StartI);
723 }
724 auto I = std::prev(StartI);
725 if (I->SharingMap.count(D)) {
726 DVar.RefExpr = I->SharingMap[D].RefExpr.getPointer();
727 DVar.PrivateCopy = I->SharingMap[D].PrivateCopy;
728 DVar.CKind = I->SharingMap[D].Attributes;
729 DVar.ImplicitDSALoc = I->DefaultAttrLoc;
730 }
731
732 return DVar;
733}
734
735DSAStackTy::DSAVarData DSAStackTy::getImplicitDSA(ValueDecl *D,
736 bool FromParent) {
737 D = getCanonicalDecl(D);
738 auto StartI = Stack.rbegin();
739 auto EndI = std::prev(Stack.rend());
740 if (FromParent && StartI != EndI) {
741 StartI = std::next(StartI);
742 }
743 return getDSA(StartI, D);
744}
745
746DSAStackTy::DSAVarData
747DSAStackTy::hasDSA(ValueDecl *D,
748 const llvm::function_ref<bool(OpenMPClauseKind)> &CPred,
749 const llvm::function_ref<bool(OpenMPDirectiveKind)> &DPred,
750 bool FromParent) {
751 D = getCanonicalDecl(D);
752 auto StartI = std::next(Stack.rbegin());
753 auto EndI = Stack.rend();
754 if (FromParent && StartI != EndI) {
755 StartI = std::next(StartI);
756 }
757 for (auto I = StartI, EE = EndI; I != EE; ++I) {
758 if (!DPred(I->Directive) && !isParallelOrTaskRegion(I->Directive))
759 continue;
760 DSAVarData DVar = getDSA(I, D);
761 if (CPred(DVar.CKind))
762 return DVar;
763 }
764 return DSAVarData();
765}
766
767DSAStackTy::DSAVarData DSAStackTy::hasInnermostDSA(
768 ValueDecl *D, const llvm::function_ref<bool(OpenMPClauseKind)> &CPred,
769 const llvm::function_ref<bool(OpenMPDirectiveKind)> &DPred,
770 bool FromParent) {
771 D = getCanonicalDecl(D);
772 auto StartI = std::next(Stack.rbegin());
773 auto EndI = Stack.rend();
774 if (FromParent && StartI != EndI) {
775 StartI = std::next(StartI);
776 }
777 for (auto I = StartI, EE = EndI; I != EE; ++I) {
778 if (!DPred(I->Directive))
779 break;
780 DSAVarData DVar = getDSA(I, D);
781 if (CPred(DVar.CKind))
782 return DVar;
783 return DSAVarData();
784 }
785 return DSAVarData();
786}
787
788bool DSAStackTy::hasExplicitDSA(
789 ValueDecl *D, const llvm::function_ref<bool(OpenMPClauseKind)> &CPred,
790 unsigned Level, bool NotLastprivate) {
791 if (CPred(ClauseKindMode))
792 return true;
793 D = getCanonicalDecl(D);
794 auto StartI = std::next(Stack.begin());
795 auto EndI = Stack.end();
796 if (std::distance(StartI, EndI) <= (int)Level)
797 return false;
798 std::advance(StartI, Level);
799 return (StartI->SharingMap.count(D) > 0) &&
800 StartI->SharingMap[D].RefExpr.getPointer() &&
801 CPred(StartI->SharingMap[D].Attributes) &&
802 (!NotLastprivate || !StartI->SharingMap[D].RefExpr.getInt());
803}
804
805bool DSAStackTy::hasExplicitDirective(
806 const llvm::function_ref<bool(OpenMPDirectiveKind)> &DPred,
807 unsigned Level) {
808 auto StartI = std::next(Stack.begin());
809 auto EndI = Stack.end();
810 if (std::distance(StartI, EndI) <= (int)Level)
811 return false;
812 std::advance(StartI, Level);
813 return DPred(StartI->Directive);
814}
815
816bool DSAStackTy::hasDirective(
817 const llvm::function_ref<bool(OpenMPDirectiveKind,
818 const DeclarationNameInfo &, SourceLocation)>
819 &DPred,
820 bool FromParent) {
821 auto StartI = std::next(Stack.rbegin());
822 auto EndI = std::prev(Stack.rend());
823 if (FromParent && StartI != EndI) {
824 StartI = std::next(StartI);
825 }
826 for (auto I = StartI, EE = EndI; I != EE; ++I) {
827 if (DPred(I->Directive, I->DirectiveName, I->ConstructLoc))
828 return true;
829 }
830 return false;
831}
832
833void Sema::InitDataSharingAttributesStack() {
834 VarDataSharingAttributesStack = new DSAStackTy(*this);
835}
836
837#define DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
) static_cast<DSAStackTy *>(VarDataSharingAttributesStack)
838
839bool Sema::IsOpenMPCapturedByRef(ValueDecl *D, unsigned Level) {
840 assert(LangOpts.OpenMP && "OpenMP is not allowed")((LangOpts.OpenMP && "OpenMP is not allowed") ? static_cast
<void> (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 840, __PRETTY_FUNCTION__));
841
842 auto &Ctx = getASTContext();
843 bool IsByRef = true;
844
845 // Find the directive that is associated with the provided scope.
846 auto Ty = D->getType();
847
848 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasExplicitDirective(isOpenMPTargetExecutionDirective, Level)) {
849 // This table summarizes how a given variable should be passed to the device
850 // given its type and the clauses where it appears. This table is based on
851 // the description in OpenMP 4.5 [2.10.4, target Construct] and
852 // OpenMP 4.5 [2.15.5, Data-mapping Attribute Rules and Clauses].
853 //
854 // =========================================================================
855 // | type | defaultmap | pvt | first | is_device_ptr | map | res. |
856 // | |(tofrom:scalar)| | pvt | | | |
857 // =========================================================================
858 // | scl | | | | - | | bycopy|
859 // | scl | | - | x | - | - | bycopy|
860 // | scl | | x | - | - | - | null |
861 // | scl | x | | | - | | byref |
862 // | scl | x | - | x | - | - | bycopy|
863 // | scl | x | x | - | - | - | null |
864 // | scl | | - | - | - | x | byref |
865 // | scl | x | - | - | - | x | byref |
866 //
867 // | agg | n.a. | | | - | | byref |
868 // | agg | n.a. | - | x | - | - | byref |
869 // | agg | n.a. | x | - | - | - | null |
870 // | agg | n.a. | - | - | - | x | byref |
871 // | agg | n.a. | - | - | - | x[] | byref |
872 //
873 // | ptr | n.a. | | | - | | bycopy|
874 // | ptr | n.a. | - | x | - | - | bycopy|
875 // | ptr | n.a. | x | - | - | - | null |
876 // | ptr | n.a. | - | - | - | x | byref |
877 // | ptr | n.a. | - | - | - | x[] | bycopy|
878 // | ptr | n.a. | - | - | x | | bycopy|
879 // | ptr | n.a. | - | - | x | x | bycopy|
880 // | ptr | n.a. | - | - | x | x[] | bycopy|
881 // =========================================================================
882 // Legend:
883 // scl - scalar
884 // ptr - pointer
885 // agg - aggregate
886 // x - applies
887 // - - invalid in this combination
888 // [] - mapped with an array section
889 // byref - should be mapped by reference
890 // byval - should be mapped by value
891 // null - initialize a local variable to null on the device
892 //
893 // Observations:
894 // - All scalar declarations that show up in a map clause have to be passed
895 // by reference, because they may have been mapped in the enclosing data
896 // environment.
897 // - If the scalar value does not fit the size of uintptr, it has to be
898 // passed by reference, regardless the result in the table above.
899 // - For pointers mapped by value that have either an implicit map or an
900 // array section, the runtime library may pass the NULL value to the
901 // device instead of the value passed to it by the compiler.
902
903
904 if (Ty->isReferenceType())
905 Ty = Ty->castAs<ReferenceType>()->getPointeeType();
906
907 // Locate map clauses and see if the variable being captured is referred to
908 // in any of those clauses. Here we only care about variables, not fields,
909 // because fields are part of aggregates.
910 bool IsVariableUsedInMapClause = false;
911 bool IsVariableAssociatedWithSection = false;
912
913 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->checkMappableExprComponentListsForDecl(
914 D, /*CurrentRegionOnly=*/true,
915 [&](OMPClauseMappableExprCommon::MappableExprComponentListRef
916 MapExprComponents) {
917
918 auto EI = MapExprComponents.rbegin();
919 auto EE = MapExprComponents.rend();
920
921 assert(EI != EE && "Invalid map expression!")((EI != EE && "Invalid map expression!") ? static_cast
<void> (0) : __assert_fail ("EI != EE && \"Invalid map expression!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 921, __PRETTY_FUNCTION__));
922
923 if (isa<DeclRefExpr>(EI->getAssociatedExpression()))
924 IsVariableUsedInMapClause |= EI->getAssociatedDeclaration() == D;
925
926 ++EI;
927 if (EI == EE)
928 return false;
929
930 if (isa<ArraySubscriptExpr>(EI->getAssociatedExpression()) ||
931 isa<OMPArraySectionExpr>(EI->getAssociatedExpression()) ||
932 isa<MemberExpr>(EI->getAssociatedExpression())) {
933 IsVariableAssociatedWithSection = true;
934 // There is nothing more we need to know about this variable.
935 return true;
936 }
937
938 // Keep looking for more map info.
939 return false;
940 });
941
942 if (IsVariableUsedInMapClause) {
943 // If variable is identified in a map clause it is always captured by
944 // reference except if it is a pointer that is dereferenced somehow.
945 IsByRef = !(Ty->isPointerType() && IsVariableAssociatedWithSection);
946 } else {
947 // By default, all the data that has a scalar type is mapped by copy.
948 IsByRef = !Ty->isScalarType();
949 }
950 }
951
952 if (IsByRef && Ty.getNonReferenceType()->isScalarType()) {
953 IsByRef = !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasExplicitDSA(
954 D, [](OpenMPClauseKind K) -> bool { return K == OMPC_firstprivate; },
955 Level, /*NotLastprivate=*/true);
956 }
957
958 // When passing data by copy, we need to make sure it fits the uintptr size
959 // and alignment, because the runtime library only deals with uintptr types.
960 // If it does not fit the uintptr size, we need to pass the data by reference
961 // instead.
962 if (!IsByRef &&
963 (Ctx.getTypeSizeInChars(Ty) >
964 Ctx.getTypeSizeInChars(Ctx.getUIntPtrType()) ||
965 Ctx.getDeclAlign(D) > Ctx.getTypeAlignInChars(Ctx.getUIntPtrType()))) {
966 IsByRef = true;
967 }
968
969 return IsByRef;
970}
971
972unsigned Sema::getOpenMPNestingLevel() const {
973 assert(getLangOpts().OpenMP)((getLangOpts().OpenMP) ? static_cast<void> (0) : __assert_fail
("getLangOpts().OpenMP", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 973, __PRETTY_FUNCTION__));
974 return DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getNestingLevel();
975}
976
977VarDecl *Sema::IsOpenMPCapturedDecl(ValueDecl *D) {
978 assert(LangOpts.OpenMP && "OpenMP is not allowed")((LangOpts.OpenMP && "OpenMP is not allowed") ? static_cast
<void> (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 978, __PRETTY_FUNCTION__));
979 D = getCanonicalDecl(D);
980
981 // If we are attempting to capture a global variable in a directive with
982 // 'target' we return true so that this global is also mapped to the device.
983 //
984 // FIXME: If the declaration is enclosed in a 'declare target' directive,
985 // then it should not be captured. Therefore, an extra check has to be
986 // inserted here once support for 'declare target' is added.
987 //
988 auto *VD = dyn_cast<VarDecl>(D);
989 if (VD && !VD->hasLocalStorage()) {
990 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective() == OMPD_target &&
991 !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isClauseParsingMode())
992 return VD;
993 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope() &&
994 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasDirective(
995 [](OpenMPDirectiveKind K, const DeclarationNameInfo &,
996 SourceLocation) -> bool {
997 return isOpenMPTargetExecutionDirective(K);
998 },
999 false))
1000 return VD;
1001 }
1002
1003 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective() != OMPD_unknown &&
1004 (!DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isClauseParsingMode() ||
1005 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentDirective() != OMPD_unknown)) {
1006 auto &&Info = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isLoopControlVariable(D);
1007 if (Info.first ||
1008 (VD && VD->hasLocalStorage() &&
1009 isParallelOrTaskRegion(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) ||
1010 (VD && DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isForceVarCapturing()))
1011 return VD ? VD : Info.second;
1012 auto DVarPrivate = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isClauseParsingMode());
17
←
Within the expansion of the macro 'DSAStack':
→
a
Null pointer value stored to 'DVarPrivate.PrivateCopy'
1013 if (DVarPrivate.CKind != OMPC_unknown && isOpenMPPrivate(DVarPrivate.CKind))
18
←
Taking true branch
→
1014 return VD ? VD : cast<VarDecl>(DVarPrivate.PrivateCopy->getDecl());
19
←
'?' condition is false
→
20
←
Called C++ object pointer is null
1015 DVarPrivate = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasDSA(
1016 D, isOpenMPPrivate, [](OpenMPDirectiveKind) -> bool { return true; },
1017 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isClauseParsingMode());
1018 if (DVarPrivate.CKind != OMPC_unknown)
1019 return VD ? VD : cast<VarDecl>(DVarPrivate.PrivateCopy->getDecl());
1020 }
1021 return nullptr;
1022}
1023
1024bool Sema::isOpenMPPrivateDecl(ValueDecl *D, unsigned Level) {
1025 assert(LangOpts.OpenMP && "OpenMP is not allowed")((LangOpts.OpenMP && "OpenMP is not allowed") ? static_cast
<void> (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 1025, __PRETTY_FUNCTION__));
1026 return DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasExplicitDSA(
1027 D, [](OpenMPClauseKind K) -> bool { return K == OMPC_private; }, Level);
1028}
1029
1030bool Sema::isOpenMPTargetCapturedDecl(ValueDecl *D, unsigned Level) {
1031 assert(LangOpts.OpenMP && "OpenMP is not allowed")((LangOpts.OpenMP && "OpenMP is not allowed") ? static_cast
<void> (0) : __assert_fail ("LangOpts.OpenMP && \"OpenMP is not allowed\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 1031, __PRETTY_FUNCTION__));
1032 // Return true if the current level is no longer enclosed in a target region.
1033
1034 auto *VD = dyn_cast<VarDecl>(D);
1035 return VD && !VD->hasLocalStorage() &&
1036 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasExplicitDirective(isOpenMPTargetExecutionDirective,
1037 Level);
1038}
1039
1040void Sema::DestroyDataSharingAttributesStack() { delete DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
); }
1041
1042void Sema::StartOpenMPDSABlock(OpenMPDirectiveKind DKind,
1043 const DeclarationNameInfo &DirName,
1044 Scope *CurScope, SourceLocation Loc) {
1045 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->push(DKind, DirName, CurScope, Loc);
1046 PushExpressionEvaluationContext(PotentiallyEvaluated);
1047}
1048
1049void Sema::StartOpenMPClause(OpenMPClauseKind K) {
1050 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setClauseParsingMode(K);
1051}
1052
1053void Sema::EndOpenMPClause() {
1054 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setClauseParsingMode(/*K=*/OMPC_unknown);
1055}
1056
1057void Sema::EndOpenMPDSABlock(Stmt *CurDirective) {
1058 // OpenMP [2.14.3.5, Restrictions, C/C++, p.1]
1059 // A variable of class type (or array thereof) that appears in a lastprivate
1060 // clause requires an accessible, unambiguous default constructor for the
1061 // class type, unless the list item is also specified in a firstprivate
1062 // clause.
1063 if (auto D = dyn_cast_or_null<OMPExecutableDirective>(CurDirective)) {
1064 for (auto *C : D->clauses()) {
1065 if (auto *Clause = dyn_cast<OMPLastprivateClause>(C)) {
1066 SmallVector<Expr *, 8> PrivateCopies;
1067 for (auto *DE : Clause->varlists()) {
1068 if (DE->isValueDependent() || DE->isTypeDependent()) {
1069 PrivateCopies.push_back(nullptr);
1070 continue;
1071 }
1072 auto *DRE = cast<DeclRefExpr>(DE->IgnoreParens());
1073 VarDecl *VD = cast<VarDecl>(DRE->getDecl());
1074 QualType Type = VD->getType().getNonReferenceType();
1075 auto DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(VD, false);
1076 if (DVar.CKind == OMPC_lastprivate) {
1077 // Generate helper private variable and initialize it with the
1078 // default value. The address of the original variable is replaced
1079 // by the address of the new private variable in CodeGen. This new
1080 // variable is not added to IdResolver, so the code in the OpenMP
1081 // region uses original variable for proper diagnostics.
1082 auto *VDPrivate = buildVarDecl(
1083 *this, DE->getExprLoc(), Type.getUnqualifiedType(),
1084 VD->getName(), VD->hasAttrs() ? &VD->getAttrs() : nullptr);
1085 ActOnUninitializedDecl(VDPrivate, /*TypeMayContainAuto=*/false);
1086 if (VDPrivate->isInvalidDecl())
1087 continue;
1088 PrivateCopies.push_back(buildDeclRefExpr(
1089 *this, VDPrivate, DE->getType(), DE->getExprLoc()));
1090 } else {
1091 // The variable is also a firstprivate, so initialization sequence
1092 // for private copy is generated already.
1093 PrivateCopies.push_back(nullptr);
1094 }
1095 }
1096 // Set initializers to private copies if no errors were found.
1097 if (PrivateCopies.size() == Clause->varlist_size())
1098 Clause->setPrivateCopies(PrivateCopies);
1099 }
1100 }
1101 }
1102
1103 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->pop();
1104 DiscardCleanupsInEvaluationContext();
1105 PopExpressionEvaluationContext();
1106}
1107
1108static bool FinishOpenMPLinearClause(OMPLinearClause &Clause, DeclRefExpr *IV,
1109 Expr *NumIterations, Sema &SemaRef,
1110 Scope *S, DSAStackTy *Stack);
1111
1112namespace {
1113
1114class VarDeclFilterCCC : public CorrectionCandidateCallback {
1115private:
1116 Sema &SemaRef;
1117
1118public:
1119 explicit VarDeclFilterCCC(Sema &S) : SemaRef(S) {}
1120 bool ValidateCandidate(const TypoCorrection &Candidate) override {
1121 NamedDecl *ND = Candidate.getCorrectionDecl();
1122 if (VarDecl *VD = dyn_cast_or_null<VarDecl>(ND)) {
1123 return VD->hasGlobalStorage() &&
1124 SemaRef.isDeclInScope(ND, SemaRef.getCurLexicalContext(),
1125 SemaRef.getCurScope());
1126 }
1127 return false;
1128 }
1129};
1130
1131class VarOrFuncDeclFilterCCC : public CorrectionCandidateCallback {
1132private:
1133 Sema &SemaRef;
1134
1135public:
1136 explicit VarOrFuncDeclFilterCCC(Sema &S) : SemaRef(S) {}
1137 bool ValidateCandidate(const TypoCorrection &Candidate) override {
1138 NamedDecl *ND = Candidate.getCorrectionDecl();
1139 if (isa<VarDecl>(ND) || isa<FunctionDecl>(ND)) {
1140 return SemaRef.isDeclInScope(ND, SemaRef.getCurLexicalContext(),
1141 SemaRef.getCurScope());
1142 }
1143 return false;
1144 }
1145};
1146
1147} // namespace
1148
1149ExprResult Sema::ActOnOpenMPIdExpression(Scope *CurScope,
1150 CXXScopeSpec &ScopeSpec,
1151 const DeclarationNameInfo &Id) {
1152 LookupResult Lookup(*this, Id, LookupOrdinaryName);
1153 LookupParsedName(Lookup, CurScope, &ScopeSpec, true);
1154
1155 if (Lookup.isAmbiguous())
1156 return ExprError();
1157
1158 VarDecl *VD;
1159 if (!Lookup.isSingleResult()) {
1160 if (TypoCorrection Corrected = CorrectTypo(
1161 Id, LookupOrdinaryName, CurScope, nullptr,
1162 llvm::make_unique<VarDeclFilterCCC>(*this), CTK_ErrorRecovery)) {
1163 diagnoseTypo(Corrected,
1164 PDiag(Lookup.empty()
1165 ? diag::err_undeclared_var_use_suggest
1166 : diag::err_omp_expected_var_arg_suggest)
1167 << Id.getName());
1168 VD = Corrected.getCorrectionDeclAs<VarDecl>();
1169 } else {
1170 Diag(Id.getLoc(), Lookup.empty() ? diag::err_undeclared_var_use
1171 : diag::err_omp_expected_var_arg)
1172 << Id.getName();
1173 return ExprError();
1174 }
1175 } else {
1176 if (!(VD = Lookup.getAsSingle<VarDecl>())) {
1177 Diag(Id.getLoc(), diag::err_omp_expected_var_arg) << Id.getName();
1178 Diag(Lookup.getFoundDecl()->getLocation(), diag::note_declared_at);
1179 return ExprError();
1180 }
1181 }
1182 Lookup.suppressDiagnostics();
1183
1184 // OpenMP [2.9.2, Syntax, C/C++]
1185 // Variables must be file-scope, namespace-scope, or static block-scope.
1186 if (!VD->hasGlobalStorage()) {
1187 Diag(Id.getLoc(), diag::err_omp_global_var_arg)
1188 << getOpenMPDirectiveName(OMPD_threadprivate) << !VD->isStaticLocal();
1189 bool IsDecl =
1190 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1191 Diag(VD->getLocation(),
1192 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1193 << VD;
1194 return ExprError();
1195 }
1196
1197 VarDecl *CanonicalVD = VD->getCanonicalDecl();
1198 NamedDecl *ND = cast<NamedDecl>(CanonicalVD);
1199 // OpenMP [2.9.2, Restrictions, C/C++, p.2]
1200 // A threadprivate directive for file-scope variables must appear outside
1201 // any definition or declaration.
1202 if (CanonicalVD->getDeclContext()->isTranslationUnit() &&
1203 !getCurLexicalContext()->isTranslationUnit()) {
1204 Diag(Id.getLoc(), diag::err_omp_var_scope)
1205 << getOpenMPDirectiveName(OMPD_threadprivate) << VD;
1206 bool IsDecl =
1207 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1208 Diag(VD->getLocation(),
1209 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1210 << VD;
1211 return ExprError();
1212 }
1213 // OpenMP [2.9.2, Restrictions, C/C++, p.3]
1214 // A threadprivate directive for static class member variables must appear
1215 // in the class definition, in the same scope in which the member
1216 // variables are declared.
1217 if (CanonicalVD->isStaticDataMember() &&
1218 !CanonicalVD->getDeclContext()->Equals(getCurLexicalContext())) {
1219 Diag(Id.getLoc(), diag::err_omp_var_scope)
1220 << getOpenMPDirectiveName(OMPD_threadprivate) << VD;
1221 bool IsDecl =
1222 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1223 Diag(VD->getLocation(),
1224 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1225 << VD;
1226 return ExprError();
1227 }
1228 // OpenMP [2.9.2, Restrictions, C/C++, p.4]
1229 // A threadprivate directive for namespace-scope variables must appear
1230 // outside any definition or declaration other than the namespace
1231 // definition itself.
1232 if (CanonicalVD->getDeclContext()->isNamespace() &&
1233 (!getCurLexicalContext()->isFileContext() ||
1234 !getCurLexicalContext()->Encloses(CanonicalVD->getDeclContext()))) {
1235 Diag(Id.getLoc(), diag::err_omp_var_scope)
1236 << getOpenMPDirectiveName(OMPD_threadprivate) << VD;
1237 bool IsDecl =
1238 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1239 Diag(VD->getLocation(),
1240 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1241 << VD;
1242 return ExprError();
1243 }
1244 // OpenMP [2.9.2, Restrictions, C/C++, p.6]
1245 // A threadprivate directive for static block-scope variables must appear
1246 // in the scope of the variable and not in a nested scope.
1247 if (CanonicalVD->isStaticLocal() && CurScope &&
1248 !isDeclInScope(ND, getCurLexicalContext(), CurScope)) {
1249 Diag(Id.getLoc(), diag::err_omp_var_scope)
1250 << getOpenMPDirectiveName(OMPD_threadprivate) << VD;
1251 bool IsDecl =
1252 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1253 Diag(VD->getLocation(),
1254 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1255 << VD;
1256 return ExprError();
1257 }
1258
1259 // OpenMP [2.9.2, Restrictions, C/C++, p.2-6]
1260 // A threadprivate directive must lexically precede all references to any
1261 // of the variables in its list.
1262 if (VD->isUsed() && !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isThreadPrivate(VD)) {
1263 Diag(Id.getLoc(), diag::err_omp_var_used)
1264 << getOpenMPDirectiveName(OMPD_threadprivate) << VD;
1265 return ExprError();
1266 }
1267
1268 QualType ExprType = VD->getType().getNonReferenceType();
1269 return DeclRefExpr::Create(Context, NestedNameSpecifierLoc(),
1270 SourceLocation(), VD,
1271 /*RefersToEnclosingVariableOrCapture=*/false,
1272 Id.getLoc(), ExprType, VK_LValue);
1273}
1274
1275Sema::DeclGroupPtrTy
1276Sema::ActOnOpenMPThreadprivateDirective(SourceLocation Loc,
1277 ArrayRef<Expr *> VarList) {
1278 if (OMPThreadPrivateDecl *D = CheckOMPThreadPrivateDecl(Loc, VarList)) {
1279 CurContext->addDecl(D);
1280 return DeclGroupPtrTy::make(DeclGroupRef(D));
1281 }
1282 return nullptr;
1283}
1284
1285namespace {
1286class LocalVarRefChecker : public ConstStmtVisitor<LocalVarRefChecker, bool> {
1287 Sema &SemaRef;
1288
1289public:
1290 bool VisitDeclRefExpr(const DeclRefExpr *E) {
1291 if (auto VD = dyn_cast<VarDecl>(E->getDecl())) {
1292 if (VD->hasLocalStorage()) {
1293 SemaRef.Diag(E->getLocStart(),
1294 diag::err_omp_local_var_in_threadprivate_init)
1295 << E->getSourceRange();
1296 SemaRef.Diag(VD->getLocation(), diag::note_defined_here)
1297 << VD << VD->getSourceRange();
1298 return true;
1299 }
1300 }
1301 return false;
1302 }
1303 bool VisitStmt(const Stmt *S) {
1304 for (auto Child : S->children()) {
1305 if (Child && Visit(Child))
1306 return true;
1307 }
1308 return false;
1309 }
1310 explicit LocalVarRefChecker(Sema &SemaRef) : SemaRef(SemaRef) {}
1311};
1312} // namespace
1313
1314OMPThreadPrivateDecl *
1315Sema::CheckOMPThreadPrivateDecl(SourceLocation Loc, ArrayRef<Expr *> VarList) {
1316 SmallVector<Expr *, 8> Vars;
1317 for (auto &RefExpr : VarList) {
1318 DeclRefExpr *DE = cast<DeclRefExpr>(RefExpr);
1319 VarDecl *VD = cast<VarDecl>(DE->getDecl());
1320 SourceLocation ILoc = DE->getExprLoc();
1321
1322 // Mark variable as used.
1323 VD->setReferenced();
1324 VD->markUsed(Context);
1325
1326 QualType QType = VD->getType();
1327 if (QType->isDependentType() || QType->isInstantiationDependentType()) {
1328 // It will be analyzed later.
1329 Vars.push_back(DE);
1330 continue;
1331 }
1332
1333 // OpenMP [2.9.2, Restrictions, C/C++, p.10]
1334 // A threadprivate variable must not have an incomplete type.
1335 if (RequireCompleteType(ILoc, VD->getType(),
1336 diag::err_omp_threadprivate_incomplete_type)) {
1337 continue;
1338 }
1339
1340 // OpenMP [2.9.2, Restrictions, C/C++, p.10]
1341 // A threadprivate variable must not have a reference type.
1342 if (VD->getType()->isReferenceType()) {
1343 Diag(ILoc, diag::err_omp_ref_type_arg)
1344 << getOpenMPDirectiveName(OMPD_threadprivate) << VD->getType();
1345 bool IsDecl =
1346 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1347 Diag(VD->getLocation(),
1348 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1349 << VD;
1350 continue;
1351 }
1352
1353 // Check if this is a TLS variable. If TLS is not being supported, produce
1354 // the corresponding diagnostic.
1355 if ((VD->getTLSKind() != VarDecl::TLS_None &&
1356 !(VD->hasAttr<OMPThreadPrivateDeclAttr>() &&
1357 getLangOpts().OpenMPUseTLS &&
1358 getASTContext().getTargetInfo().isTLSSupported())) ||
1359 (VD->getStorageClass() == SC_Register && VD->hasAttr<AsmLabelAttr>() &&
1360 !VD->isLocalVarDecl())) {
1361 Diag(ILoc, diag::err_omp_var_thread_local)
1362 << VD << ((VD->getTLSKind() != VarDecl::TLS_None) ? 0 : 1);
1363 bool IsDecl =
1364 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
1365 Diag(VD->getLocation(),
1366 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
1367 << VD;
1368 continue;
1369 }
1370
1371 // Check if initial value of threadprivate variable reference variable with
1372 // local storage (it is not supported by runtime).
1373 if (auto Init = VD->getAnyInitializer()) {
1374 LocalVarRefChecker Checker(*this);
1375 if (Checker.Visit(Init))
1376 continue;
1377 }
1378
1379 Vars.push_back(RefExpr);
1380 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(VD, DE, OMPC_threadprivate);
1381 VD->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(
1382 Context, SourceRange(Loc, Loc)));
1383 if (auto *ML = Context.getASTMutationListener())
1384 ML->DeclarationMarkedOpenMPThreadPrivate(VD);
1385 }
1386 OMPThreadPrivateDecl *D = nullptr;
1387 if (!Vars.empty()) {
1388 D = OMPThreadPrivateDecl::Create(Context, getCurLexicalContext(), Loc,
1389 Vars);
1390 D->setAccess(AS_public);
1391 }
1392 return D;
1393}
1394
1395static void ReportOriginalDSA(Sema &SemaRef, DSAStackTy *Stack,
1396 const ValueDecl *D, DSAStackTy::DSAVarData DVar,
1397 bool IsLoopIterVar = false) {
1398 if (DVar.RefExpr) {
1399 SemaRef.Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa)
1400 << getOpenMPClauseName(DVar.CKind);
1401 return;
1402 }
1403 enum {
1404 PDSA_StaticMemberShared,
1405 PDSA_StaticLocalVarShared,
1406 PDSA_LoopIterVarPrivate,
1407 PDSA_LoopIterVarLinear,
1408 PDSA_LoopIterVarLastprivate,
1409 PDSA_ConstVarShared,
1410 PDSA_GlobalVarShared,
1411 PDSA_TaskVarFirstprivate,
1412 PDSA_LocalVarPrivate,
1413 PDSA_Implicit
1414 } Reason = PDSA_Implicit;
1415 bool ReportHint = false;
1416 auto ReportLoc = D->getLocation();
1417 auto *VD = dyn_cast<VarDecl>(D);
1418 if (IsLoopIterVar) {
1419 if (DVar.CKind == OMPC_private)
1420 Reason = PDSA_LoopIterVarPrivate;
1421 else if (DVar.CKind == OMPC_lastprivate)
1422 Reason = PDSA_LoopIterVarLastprivate;
1423 else
1424 Reason = PDSA_LoopIterVarLinear;
1425 } else if (isOpenMPTaskingDirective(DVar.DKind) &&
1426 DVar.CKind == OMPC_firstprivate) {
1427 Reason = PDSA_TaskVarFirstprivate;
1428 ReportLoc = DVar.ImplicitDSALoc;
1429 } else if (VD && VD->isStaticLocal())
1430 Reason = PDSA_StaticLocalVarShared;
1431 else if (VD && VD->isStaticDataMember())
1432 Reason = PDSA_StaticMemberShared;
1433 else if (VD && VD->isFileVarDecl())
1434 Reason = PDSA_GlobalVarShared;
1435 else if (D->getType().isConstant(SemaRef.getASTContext()))
1436 Reason = PDSA_ConstVarShared;
1437 else if (VD && VD->isLocalVarDecl() && DVar.CKind == OMPC_private) {
1438 ReportHint = true;
1439 Reason = PDSA_LocalVarPrivate;
1440 }
1441 if (Reason != PDSA_Implicit) {
1442 SemaRef.Diag(ReportLoc, diag::note_omp_predetermined_dsa)
1443 << Reason << ReportHint
1444 << getOpenMPDirectiveName(Stack->getCurrentDirective());
1445 } else if (DVar.ImplicitDSALoc.isValid()) {
1446 SemaRef.Diag(DVar.ImplicitDSALoc, diag::note_omp_implicit_dsa)
1447 << getOpenMPClauseName(DVar.CKind);
1448 }
1449}
1450
1451namespace {
1452class DSAAttrChecker : public StmtVisitor<DSAAttrChecker, void> {
1453 DSAStackTy *Stack;
1454 Sema &SemaRef;
1455 bool ErrorFound;
1456 CapturedStmt *CS;
1457 llvm::SmallVector<Expr *, 8> ImplicitFirstprivate;
1458 llvm::DenseMap<ValueDecl *, Expr *> VarsWithInheritedDSA;
1459
1460public:
1461 void VisitDeclRefExpr(DeclRefExpr *E) {
1462 if (E->isTypeDependent() || E->isValueDependent() ||
1463 E->containsUnexpandedParameterPack() || E->isInstantiationDependent())
1464 return;
1465 if (auto *VD = dyn_cast<VarDecl>(E->getDecl())) {
1466 // Skip internally declared variables.
1467 if (VD->isLocalVarDecl() && !CS->capturesVariable(VD))
1468 return;
1469
1470 auto DVar = Stack->getTopDSA(VD, false);
1471 // Check if the variable has explicit DSA set and stop analysis if it so.
1472 if (DVar.RefExpr) return;
1473
1474 auto ELoc = E->getExprLoc();
1475 auto DKind = Stack->getCurrentDirective();
1476 // The default(none) clause requires that each variable that is referenced
1477 // in the construct, and does not have a predetermined data-sharing
1478 // attribute, must have its data-sharing attribute explicitly determined
1479 // by being listed in a data-sharing attribute clause.
1480 if (DVar.CKind == OMPC_unknown && Stack->getDefaultDSA() == DSA_none &&
1481 isParallelOrTaskRegion(DKind) &&
1482 VarsWithInheritedDSA.count(VD) == 0) {
1483 VarsWithInheritedDSA[VD] = E;
1484 return;
1485 }
1486
1487 // OpenMP [2.9.3.6, Restrictions, p.2]
1488 // A list item that appears in a reduction clause of the innermost
1489 // enclosing worksharing or parallel construct may not be accessed in an
1490 // explicit task.
1491 DVar = Stack->hasInnermostDSA(
1492 VD, [](OpenMPClauseKind C) -> bool { return C == OMPC_reduction; },
1493 [](OpenMPDirectiveKind K) -> bool {
1494 return isOpenMPParallelDirective(K) ||
1495 isOpenMPWorksharingDirective(K) || isOpenMPTeamsDirective(K);
1496 },
1497 false);
1498 if (isOpenMPTaskingDirective(DKind) && DVar.CKind == OMPC_reduction) {
1499 ErrorFound = true;
1500 SemaRef.Diag(ELoc, diag::err_omp_reduction_in_task);
1501 ReportOriginalDSA(SemaRef, Stack, VD, DVar);
1502 return;
1503 }
1504
1505 // Define implicit data-sharing attributes for task.
1506 DVar = Stack->getImplicitDSA(VD, false);
1507 if (isOpenMPTaskingDirective(DKind) && DVar.CKind != OMPC_shared &&
1508 !Stack->isLoopControlVariable(VD).first)
1509 ImplicitFirstprivate.push_back(E);
1510 }
1511 }
1512 void VisitMemberExpr(MemberExpr *E) {
1513 if (E->isTypeDependent() || E->isValueDependent() ||
1514 E->containsUnexpandedParameterPack() || E->isInstantiationDependent())
1515 return;
1516 if (isa<CXXThisExpr>(E->getBase()->IgnoreParens())) {
1517 if (auto *FD = dyn_cast<FieldDecl>(E->getMemberDecl())) {
1518 auto DVar = Stack->getTopDSA(FD, false);
1519 // Check if the variable has explicit DSA set and stop analysis if it
1520 // so.
1521 if (DVar.RefExpr)
1522 return;
1523
1524 auto ELoc = E->getExprLoc();
1525 auto DKind = Stack->getCurrentDirective();
1526 // OpenMP [2.9.3.6, Restrictions, p.2]
1527 // A list item that appears in a reduction clause of the innermost
1528 // enclosing worksharing or parallel construct may not be accessed in
1529 // an explicit task.
1530 DVar = Stack->hasInnermostDSA(
1531 FD, [](OpenMPClauseKind C) -> bool { return C == OMPC_reduction; },
1532 [](OpenMPDirectiveKind K) -> bool {
1533 return isOpenMPParallelDirective(K) ||
1534 isOpenMPWorksharingDirective(K) ||
1535 isOpenMPTeamsDirective(K);
1536 },
1537 false);
1538 if (isOpenMPTaskingDirective(DKind) && DVar.CKind == OMPC_reduction) {
1539 ErrorFound = true;
1540 SemaRef.Diag(ELoc, diag::err_omp_reduction_in_task);
1541 ReportOriginalDSA(SemaRef, Stack, FD, DVar);
1542 return;
1543 }
1544
1545 // Define implicit data-sharing attributes for task.
1546 DVar = Stack->getImplicitDSA(FD, false);
1547 if (isOpenMPTaskingDirective(DKind) && DVar.CKind != OMPC_shared &&
1548 !Stack->isLoopControlVariable(FD).first)
1549 ImplicitFirstprivate.push_back(E);
1550 }
1551 }
1552 }
1553 void VisitOMPExecutableDirective(OMPExecutableDirective *S) {
1554 for (auto *C : S->clauses()) {
1555 // Skip analysis of arguments of implicitly defined firstprivate clause
1556 // for task directives.
1557 if (C && (!isa<OMPFirstprivateClause>(C) || C->getLocStart().isValid()))
1558 for (auto *CC : C->children()) {
1559 if (CC)
1560 Visit(CC);
1561 }
1562 }
1563 }
1564 void VisitStmt(Stmt *S) {
1565 for (auto *C : S->children()) {
1566 if (C && !isa<OMPExecutableDirective>(C))
1567 Visit(C);
1568 }
1569 }
1570
1571 bool isErrorFound() { return ErrorFound; }
1572 ArrayRef<Expr *> getImplicitFirstprivate() { return ImplicitFirstprivate; }
1573 llvm::DenseMap<ValueDecl *, Expr *> &getVarsWithInheritedDSA() {
1574 return VarsWithInheritedDSA;
1575 }
1576
1577 DSAAttrChecker(DSAStackTy *S, Sema &SemaRef, CapturedStmt *CS)
1578 : Stack(S), SemaRef(SemaRef), ErrorFound(false), CS(CS) {}
1579};
1580} // namespace
1581
1582void Sema::ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope) {
1583 switch (DKind) {
1584 case OMPD_parallel: {
1585 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
1586 QualType KmpInt32PtrTy =
1587 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
1588 Sema::CapturedParamNameType Params[] = {
1589 std::make_pair(".global_tid.", KmpInt32PtrTy),
1590 std::make_pair(".bound_tid.", KmpInt32PtrTy),
1591 std::make_pair(StringRef(), QualType()) // __context with shared vars
1592 };
1593 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1594 Params);
1595 break;
1596 }
1597 case OMPD_simd: {
1598 Sema::CapturedParamNameType Params[] = {
1599 std::make_pair(StringRef(), QualType()) // __context with shared vars
1600 };
1601 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1602 Params);
1603 break;
1604 }
1605 case OMPD_for: {
1606 Sema::CapturedParamNameType Params[] = {
1607 std::make_pair(StringRef(), QualType()) // __context with shared vars
1608 };
1609 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1610 Params);
1611 break;
1612 }
1613 case OMPD_for_simd: {
1614 Sema::CapturedParamNameType Params[] = {
1615 std::make_pair(StringRef(), QualType()) // __context with shared vars
1616 };
1617 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1618 Params);
1619 break;
1620 }
1621 case OMPD_sections: {
1622 Sema::CapturedParamNameType Params[] = {
1623 std::make_pair(StringRef(), QualType()) // __context with shared vars
1624 };
1625 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1626 Params);
1627 break;
1628 }
1629 case OMPD_section: {
1630 Sema::CapturedParamNameType Params[] = {
1631 std::make_pair(StringRef(), QualType()) // __context with shared vars
1632 };
1633 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1634 Params);
1635 break;
1636 }
1637 case OMPD_single: {
1638 Sema::CapturedParamNameType Params[] = {
1639 std::make_pair(StringRef(), QualType()) // __context with shared vars
1640 };
1641 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1642 Params);
1643 break;
1644 }
1645 case OMPD_master: {
1646 Sema::CapturedParamNameType Params[] = {
1647 std::make_pair(StringRef(), QualType()) // __context with shared vars
1648 };
1649 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1650 Params);
1651 break;
1652 }
1653 case OMPD_critical: {
1654 Sema::CapturedParamNameType Params[] = {
1655 std::make_pair(StringRef(), QualType()) // __context with shared vars
1656 };
1657 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1658 Params);
1659 break;
1660 }
1661 case OMPD_parallel_for: {
1662 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
1663 QualType KmpInt32PtrTy =
1664 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
1665 Sema::CapturedParamNameType Params[] = {
1666 std::make_pair(".global_tid.", KmpInt32PtrTy),
1667 std::make_pair(".bound_tid.", KmpInt32PtrTy),
1668 std::make_pair(StringRef(), QualType()) // __context with shared vars
1669 };
1670 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1671 Params);
1672 break;
1673 }
1674 case OMPD_parallel_for_simd: {
1675 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
1676 QualType KmpInt32PtrTy =
1677 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
1678 Sema::CapturedParamNameType Params[] = {
1679 std::make_pair(".global_tid.", KmpInt32PtrTy),
1680 std::make_pair(".bound_tid.", KmpInt32PtrTy),
1681 std::make_pair(StringRef(), QualType()) // __context with shared vars
1682 };
1683 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1684 Params);
1685 break;
1686 }
1687 case OMPD_parallel_sections: {
1688 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
1689 QualType KmpInt32PtrTy =
1690 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
1691 Sema::CapturedParamNameType Params[] = {
1692 std::make_pair(".global_tid.", KmpInt32PtrTy),
1693 std::make_pair(".bound_tid.", KmpInt32PtrTy),
1694 std::make_pair(StringRef(), QualType()) // __context with shared vars
1695 };
1696 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1697 Params);
1698 break;
1699 }
1700 case OMPD_task: {
1701 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
1702 QualType Args[] = {Context.VoidPtrTy.withConst().withRestrict()};
1703 FunctionProtoType::ExtProtoInfo EPI;
1704 EPI.Variadic = true;
1705 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
1706 Sema::CapturedParamNameType Params[] = {
1707 std::make_pair(".global_tid.", KmpInt32Ty),
1708 std::make_pair(".part_id.", Context.getPointerType(KmpInt32Ty)),
1709 std::make_pair(".privates.", Context.VoidPtrTy.withConst()),
1710 std::make_pair(".copy_fn.",
1711 Context.getPointerType(CopyFnType).withConst()),
1712 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
1713 std::make_pair(StringRef(), QualType()) // __context with shared vars
1714 };
1715 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1716 Params);
1717 // Mark this captured region as inlined, because we don't use outlined
1718 // function directly.
1719 getCurCapturedRegion()->TheCapturedDecl->addAttr(
1720 AlwaysInlineAttr::CreateImplicit(
1721 Context, AlwaysInlineAttr::Keyword_forceinline, SourceRange()));
1722 break;
1723 }
1724 case OMPD_ordered: {
1725 Sema::CapturedParamNameType Params[] = {
1726 std::make_pair(StringRef(), QualType()) // __context with shared vars
1727 };
1728 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1729 Params);
1730 break;
1731 }
1732 case OMPD_atomic: {
1733 Sema::CapturedParamNameType Params[] = {
1734 std::make_pair(StringRef(), QualType()) // __context with shared vars
1735 };
1736 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1737 Params);
1738 break;
1739 }
1740 case OMPD_target_data:
1741 case OMPD_target:
1742 case OMPD_target_parallel:
1743 case OMPD_target_parallel_for: {
1744 Sema::CapturedParamNameType Params[] = {
1745 std::make_pair(StringRef(), QualType()) // __context with shared vars
1746 };
1747 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1748 Params);
1749 break;
1750 }
1751 case OMPD_teams: {
1752 QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
1753 QualType KmpInt32PtrTy =
1754 Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
1755 Sema::CapturedParamNameType Params[] = {
1756 std::make_pair(".global_tid.", KmpInt32PtrTy),
1757 std::make_pair(".bound_tid.", KmpInt32PtrTy),
1758 std::make_pair(StringRef(), QualType()) // __context with shared vars
1759 };
1760 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1761 Params);
1762 break;
1763 }
1764 case OMPD_taskgroup: {
1765 Sema::CapturedParamNameType Params[] = {
1766 std::make_pair(StringRef(), QualType()) // __context with shared vars
1767 };
1768 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1769 Params);
1770 break;
1771 }
1772 case OMPD_taskloop:
1773 case OMPD_taskloop_simd: {
1774 QualType KmpInt32Ty =
1775 Context.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1);
1776 QualType KmpUInt64Ty =
1777 Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/0);
1778 QualType KmpInt64Ty =
1779 Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/1);
1780 QualType Args[] = {Context.VoidPtrTy.withConst().withRestrict()};
1781 FunctionProtoType::ExtProtoInfo EPI;
1782 EPI.Variadic = true;
1783 QualType CopyFnType = Context.getFunctionType(Context.VoidTy, Args, EPI);
1784 Sema::CapturedParamNameType Params[] = {
1785 std::make_pair(".global_tid.", KmpInt32Ty),
1786 std::make_pair(".part_id.", Context.getPointerType(KmpInt32Ty)),
1787 std::make_pair(".privates.",
1788 Context.VoidPtrTy.withConst().withRestrict()),
1789 std::make_pair(
1790 ".copy_fn.",
1791 Context.getPointerType(CopyFnType).withConst().withRestrict()),
1792 std::make_pair(".task_t.", Context.VoidPtrTy.withConst()),
1793 std::make_pair(".lb.", KmpUInt64Ty),
1794 std::make_pair(".ub.", KmpUInt64Ty), std::make_pair(".st.", KmpInt64Ty),
1795 std::make_pair(".liter.", KmpInt32Ty),
1796 std::make_pair(StringRef(), QualType()) // __context with shared vars
1797 };
1798 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1799 Params);
1800 // Mark this captured region as inlined, because we don't use outlined
1801 // function directly.
1802 getCurCapturedRegion()->TheCapturedDecl->addAttr(
1803 AlwaysInlineAttr::CreateImplicit(
1804 Context, AlwaysInlineAttr::Keyword_forceinline, SourceRange()));
1805 break;
1806 }
1807 case OMPD_distribute: {
1808 Sema::CapturedParamNameType Params[] = {
1809 std::make_pair(StringRef(), QualType()) // __context with shared vars
1810 };
1811 ActOnCapturedRegionStart(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc(), CurScope, CR_OpenMP,
1812 Params);
1813 break;
1814 }
1815 case OMPD_threadprivate:
1816 case OMPD_taskyield:
1817 case OMPD_barrier:
1818 case OMPD_taskwait:
1819 case OMPD_cancellation_point:
1820 case OMPD_cancel:
1821 case OMPD_flush:
1822 case OMPD_target_enter_data:
1823 case OMPD_target_exit_data:
1824 case OMPD_declare_reduction:
1825 case OMPD_declare_simd:
1826 case OMPD_declare_target:
1827 case OMPD_end_declare_target:
1828 case OMPD_target_update:
1829 llvm_unreachable("OpenMP Directive is not allowed")::llvm::llvm_unreachable_internal("OpenMP Directive is not allowed"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 1829);
1830 case OMPD_unknown:
1831 llvm_unreachable("Unknown OpenMP directive")::llvm::llvm_unreachable_internal("Unknown OpenMP directive",
"/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 1831);
1832 }
1833}
1834
1835static OMPCapturedExprDecl *buildCaptureDecl(Sema &S, IdentifierInfo *Id,
1836 Expr *CaptureExpr, bool WithInit,
1837 bool AsExpression) {
1838 assert(CaptureExpr)((CaptureExpr) ? static_cast<void> (0) : __assert_fail (
"CaptureExpr", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 1838, __PRETTY_FUNCTION__));
1839 ASTContext &C = S.getASTContext();
1840 Expr *Init = AsExpression ? CaptureExpr : CaptureExpr->IgnoreImpCasts();
1841 QualType Ty = Init->getType();
1842 if (CaptureExpr->getObjectKind() == OK_Ordinary && CaptureExpr->isGLValue()) {
1843 if (S.getLangOpts().CPlusPlus)
1844 Ty = C.getLValueReferenceType(Ty);
1845 else {
1846 Ty = C.getPointerType(Ty);
1847 ExprResult Res =
1848 S.CreateBuiltinUnaryOp(CaptureExpr->getExprLoc(), UO_AddrOf, Init);
1849 if (!Res.isUsable())
1850 return nullptr;
1851 Init = Res.get();
1852 }
1853 WithInit = true;
1854 }
1855 auto *CED = OMPCapturedExprDecl::Create(C, S.CurContext, Id, Ty);
1856 if (!WithInit)
1857 CED->addAttr(OMPCaptureNoInitAttr::CreateImplicit(C, SourceRange()));
1858 S.CurContext->addHiddenDecl(CED);
1859 S.AddInitializerToDecl(CED, Init, /*DirectInit=*/false,
1860 /*TypeMayContainAuto=*/true);
1861 return CED;
1862}
1863
1864static DeclRefExpr *buildCapture(Sema &S, ValueDecl *D, Expr *CaptureExpr,
1865 bool WithInit) {
1866 OMPCapturedExprDecl *CD;
1867 if (auto *VD = S.IsOpenMPCapturedDecl(D))
16
←
Calling 'Sema::IsOpenMPCapturedDecl'
→
1868 CD = cast<OMPCapturedExprDecl>(VD);
1869 else
1870 CD = buildCaptureDecl(S, D->getIdentifier(), CaptureExpr, WithInit,
1871 /*AsExpression=*/false);
1872 return buildDeclRefExpr(S, CD, CD->getType().getNonReferenceType(),
1873 CaptureExpr->getExprLoc());
1874}
1875
1876static ExprResult buildCapture(Sema &S, Expr *CaptureExpr, DeclRefExpr *&Ref) {
1877 if (!Ref) {
1878 auto *CD =
1879 buildCaptureDecl(S, &S.getASTContext().Idents.get(".capture_expr."),
1880 CaptureExpr, /*WithInit=*/true, /*AsExpression=*/true);
1881 Ref = buildDeclRefExpr(S, CD, CD->getType().getNonReferenceType(),
1882 CaptureExpr->getExprLoc());
1883 }
1884 ExprResult Res = Ref;
1885 if (!S.getLangOpts().CPlusPlus &&
1886 CaptureExpr->getObjectKind() == OK_Ordinary && CaptureExpr->isGLValue() &&
1887 Ref->getType()->isPointerType())
1888 Res = S.CreateBuiltinUnaryOp(CaptureExpr->getExprLoc(), UO_Deref, Ref);
1889 if (!Res.isUsable())
1890 return ExprError();
1891 return CaptureExpr->isGLValue() ? Res : S.DefaultLvalueConversion(Res.get());
1892}
1893
1894StmtResult Sema::ActOnOpenMPRegionEnd(StmtResult S,
1895 ArrayRef<OMPClause *> Clauses) {
1896 if (!S.isUsable()) {
1897 ActOnCapturedRegionError();
1898 return StmtError();
1899 }
1900
1901 OMPOrderedClause *OC = nullptr;
1902 OMPScheduleClause *SC = nullptr;
1903 SmallVector<OMPLinearClause *, 4> LCs;
1904 // This is required for proper codegen.
1905 for (auto *Clause : Clauses) {
1906 if (isOpenMPPrivate(Clause->getClauseKind()) ||
1907 Clause->getClauseKind() == OMPC_copyprivate ||
1908 (getLangOpts().OpenMPUseTLS &&
1909 getASTContext().getTargetInfo().isTLSSupported() &&
1910 Clause->getClauseKind() == OMPC_copyin)) {
1911 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setForceVarCapturing(Clause->getClauseKind() == OMPC_copyin);
1912 // Mark all variables in private list clauses as used in inner region.
1913 for (auto *VarRef : Clause->children()) {
1914 if (auto *E = cast_or_null<Expr>(VarRef)) {
1915 MarkDeclarationsReferencedInExpr(E);
1916 }
1917 }
1918 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setForceVarCapturing(/*V=*/false);
1919 } else if (isParallelOrTaskRegion(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) {
1920 // Mark all variables in private list clauses as used in inner region.
1921 // Required for proper codegen of combined directives.
1922 // TODO: add processing for other clauses.
1923 if (auto *C = OMPClauseWithPreInit::get(Clause)) {
1924 if (auto *DS = cast_or_null<DeclStmt>(C->getPreInitStmt())) {
1925 for (auto *D : DS->decls())
1926 MarkVariableReferenced(D->getLocation(), cast<VarDecl>(D));
1927 }
1928 }
1929 if (auto *C = OMPClauseWithPostUpdate::get(Clause)) {
1930 if (auto *E = C->getPostUpdateExpr())
1931 MarkDeclarationsReferencedInExpr(E);
1932 }
1933 }
1934 if (Clause->getClauseKind() == OMPC_schedule)
1935 SC = cast<OMPScheduleClause>(Clause);
1936 else if (Clause->getClauseKind() == OMPC_ordered)
1937 OC = cast<OMPOrderedClause>(Clause);
1938 else if (Clause->getClauseKind() == OMPC_linear)
1939 LCs.push_back(cast<OMPLinearClause>(Clause));
1940 }
1941 bool ErrorFound = false;
1942 // OpenMP, 2.7.1 Loop Construct, Restrictions
1943 // The nonmonotonic modifier cannot be specified if an ordered clause is
1944 // specified.
1945 if (SC &&
1946 (SC->getFirstScheduleModifier() == OMPC_SCHEDULE_MODIFIER_nonmonotonic ||
1947 SC->getSecondScheduleModifier() ==
1948 OMPC_SCHEDULE_MODIFIER_nonmonotonic) &&
1949 OC) {
1950 Diag(SC->getFirstScheduleModifier() == OMPC_SCHEDULE_MODIFIER_nonmonotonic
1951 ? SC->getFirstScheduleModifierLoc()
1952 : SC->getSecondScheduleModifierLoc(),
1953 diag::err_omp_schedule_nonmonotonic_ordered)
1954 << SourceRange(OC->getLocStart(), OC->getLocEnd());
1955 ErrorFound = true;
1956 }
1957 if (!LCs.empty() && OC && OC->getNumForLoops()) {
1958 for (auto *C : LCs) {
1959 Diag(C->getLocStart(), diag::err_omp_linear_ordered)
1960 << SourceRange(OC->getLocStart(), OC->getLocEnd());
1961 }
1962 ErrorFound = true;
1963 }
1964 if (isOpenMPWorksharingDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective()) &&
1965 isOpenMPSimdDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective()) && OC &&
1966 OC->getNumForLoops()) {
1967 Diag(OC->getLocStart(), diag::err_omp_ordered_simd)
1968 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective());
1969 ErrorFound = true;
1970 }
1971 if (ErrorFound) {
1972 ActOnCapturedRegionError();
1973 return StmtError();
1974 }
1975 return ActOnCapturedRegionEnd(S.get());
1976}
1977
1978static bool CheckNestingOfRegions(Sema &SemaRef, DSAStackTy *Stack,
1979 OpenMPDirectiveKind CurrentRegion,
1980 const DeclarationNameInfo &CurrentName,
1981 OpenMPDirectiveKind CancelRegion,
1982 SourceLocation StartLoc) {
1983 // Allowed nesting of constructs
1984 // +------------------+-----------------+------------------------------------+
1985 // | Parent directive | Child directive | Closely (!), No-Closely(+), Both(*)|
1986 // +------------------+-----------------+------------------------------------+
1987 // | parallel | parallel | * |
1988 // | parallel | for | * |
1989 // | parallel | for simd | * |
1990 // | parallel | master | * |
1991 // | parallel | critical | * |
1992 // | parallel | simd | * |
1993 // | parallel | sections | * |
1994 // | parallel | section | + |
1995 // | parallel | single | * |
1996 // | parallel | parallel for | * |
1997 // | parallel |parallel for simd| * |
1998 // | parallel |parallel sections| * |
1999 // | parallel | task | * |
2000 // | parallel | taskyield | * |
2001 // | parallel | barrier | * |
2002 // | parallel | taskwait | * |
2003 // | parallel | taskgroup | * |
2004 // | parallel | flush | * |
2005 // | parallel | ordered | + |
2006 // | parallel | atomic | * |
2007 // | parallel | target | * |
2008 // | parallel | target parallel | * |
2009 // | parallel | target parallel | * |
2010 // | | for | |
2011 // | parallel | target enter | * |
2012 // | | data | |
2013 // | parallel | target exit | * |
2014 // | | data | |
2015 // | parallel | teams | + |
2016 // | parallel | cancellation | |
2017 // | | point | ! |
2018 // | parallel | cancel | ! |
2019 // | parallel | taskloop | * |
2020 // | parallel | taskloop simd | * |
2021 // | parallel | distribute | |
2022 // +------------------+-----------------+------------------------------------+
2023 // | for | parallel | * |
2024 // | for | for | + |
2025 // | for | for simd | + |
2026 // | for | master | + |
2027 // | for | critical | * |
2028 // | for | simd | * |
2029 // | for | sections | + |
2030 // | for | section | + |
2031 // | for | single | + |
2032 // | for | parallel for | * |
2033 // | for |parallel for simd| * |
2034 // | for |parallel sections| * |
2035 // | for | task | * |
2036 // | for | taskyield | * |
2037 // | for | barrier | + |
2038 // | for | taskwait | * |
2039 // | for | taskgroup | * |
2040 // | for | flush | * |
2041 // | for | ordered | * (if construct is ordered) |
2042 // | for | atomic | * |
2043 // | for | target | * |
2044 // | for | target parallel | * |
2045 // | for | target parallel | * |
2046 // | | for | |
2047 // | for | target enter | * |
2048 // | | data | |
2049 // | for | target exit | * |
2050 // | | data | |
2051 // | for | teams | + |
2052 // | for | cancellation | |
2053 // | | point | ! |
2054 // | for | cancel | ! |
2055 // | for | taskloop | * |
2056 // | for | taskloop simd | * |
2057 // | for | distribute | |
2058 // +------------------+-----------------+------------------------------------+
2059 // | master | parallel | * |
2060 // | master | for | + |
2061 // | master | for simd | + |
2062 // | master | master | * |
2063 // | master | critical | * |
2064 // | master | simd | * |
2065 // | master | sections | + |
2066 // | master | section | + |
2067 // | master | single | + |
2068 // | master | parallel for | * |
2069 // | master |parallel for simd| * |
2070 // | master |parallel sections| * |
2071 // | master | task | * |
2072 // | master | taskyield | * |
2073 // | master | barrier | + |
2074 // | master | taskwait | * |
2075 // | master | taskgroup | * |
2076 // | master | flush | * |
2077 // | master | ordered | + |
2078 // | master | atomic | * |
2079 // | master | target | * |
2080 // | master | target parallel | * |
2081 // | master | target parallel | * |
2082 // | | for | |
2083 // | master | target enter | * |
2084 // | | data | |
2085 // | master | target exit | * |
2086 // | | data | |
2087 // | master | teams | + |
2088 // | master | cancellation | |
2089 // | | point | |
2090 // | master | cancel | |
2091 // | master | taskloop | * |
2092 // | master | taskloop simd | * |
2093 // | master | distribute | |
2094 // +------------------+-----------------+------------------------------------+
2095 // | critical | parallel | * |
2096 // | critical | for | + |
2097 // | critical | for simd | + |
2098 // | critical | master | * |
2099 // | critical | critical | * (should have different names) |
2100 // | critical | simd | * |
2101 // | critical | sections | + |
2102 // | critical | section | + |
2103 // | critical | single | + |
2104 // | critical | parallel for | * |
2105 // | critical |parallel for simd| * |
2106 // | critical |parallel sections| * |
2107 // | critical | task | * |
2108 // | critical | taskyield | * |
2109 // | critical | barrier | + |
2110 // | critical | taskwait | * |
2111 // | critical | taskgroup | * |
2112 // | critical | ordered | + |
2113 // | critical | atomic | * |
2114 // | critical | target | * |
2115 // | critical | target parallel | * |
2116 // | critical | target parallel | * |
2117 // | | for | |
2118 // | critical | target enter | * |
2119 // | | data | |
2120 // | critical | target exit | * |
2121 // | | data | |
2122 // | critical | teams | + |
2123 // | critical | cancellation | |
2124 // | | point | |
2125 // | critical | cancel | |
2126 // | critical | taskloop | * |
2127 // | critical | taskloop simd | * |
2128 // | critical | distribute | |
2129 // +------------------+-----------------+------------------------------------+
2130 // | simd | parallel | |
2131 // | simd | for | |
2132 // | simd | for simd | |
2133 // | simd | master | |
2134 // | simd | critical | |
2135 // | simd | simd | * |
2136 // | simd | sections | |
2137 // | simd | section | |
2138 // | simd | single | |
2139 // | simd | parallel for | |
2140 // | simd |parallel for simd| |
2141 // | simd |parallel sections| |
2142 // | simd | task | |
2143 // | simd | taskyield | |
2144 // | simd | barrier | |
2145 // | simd | taskwait | |
2146 // | simd | taskgroup | |
2147 // | simd | flush | |
2148 // | simd | ordered | + (with simd clause) |
2149 // | simd | atomic | |
2150 // | simd | target | |
2151 // | simd | target parallel | |
2152 // | simd | target parallel | |
2153 // | | for | |
2154 // | simd | target enter | |
2155 // | | data | |
2156 // | simd | target exit | |
2157 // | | data | |
2158 // | simd | teams | |
2159 // | simd | cancellation | |
2160 // | | point | |
2161 // | simd | cancel | |
2162 // | simd | taskloop | |
2163 // | simd | taskloop simd | |
2164 // | simd | distribute | |
2165 // +------------------+-----------------+------------------------------------+
2166 // | for simd | parallel | |
2167 // | for simd | for | |
2168 // | for simd | for simd | |
2169 // | for simd | master | |
2170 // | for simd | critical | |
2171 // | for simd | simd | * |
2172 // | for simd | sections | |
2173 // | for simd | section | |
2174 // | for simd | single | |
2175 // | for simd | parallel for | |
2176 // | for simd |parallel for simd| |
2177 // | for simd |parallel sections| |
2178 // | for simd | task | |
2179 // | for simd | taskyield | |
2180 // | for simd | barrier | |
2181 // | for simd | taskwait | |
2182 // | for simd | taskgroup | |
2183 // | for simd | flush | |
2184 // | for simd | ordered | + (with simd clause) |
2185 // | for simd | atomic | |
2186 // | for simd | target | |
2187 // | for simd | target parallel | |
2188 // | for simd | target parallel | |
2189 // | | for | |
2190 // | for simd | target enter | |
2191 // | | data | |
2192 // | for simd | target exit | |
2193 // | | data | |
2194 // | for simd | teams | |
2195 // | for simd | cancellation | |
2196 // | | point | |
2197 // | for simd | cancel | |
2198 // | for simd | taskloop | |
2199 // | for simd | taskloop simd | |
2200 // | for simd | distribute | |
2201 // +------------------+-----------------+------------------------------------+
2202 // | parallel for simd| parallel | |
2203 // | parallel for simd| for | |
2204 // | parallel for simd| for simd | |
2205 // | parallel for simd| master | |
2206 // | parallel for simd| critical | |
2207 // | parallel for simd| simd | * |
2208 // | parallel for simd| sections | |
2209 // | parallel for simd| section | |
2210 // | parallel for simd| single | |
2211 // | parallel for simd| parallel for | |
2212 // | parallel for simd|parallel for simd| |
2213 // | parallel for simd|parallel sections| |
2214 // | parallel for simd| task | |
2215 // | parallel for simd| taskyield | |
2216 // | parallel for simd| barrier | |
2217 // | parallel for simd| taskwait | |
2218 // | parallel for simd| taskgroup | |
2219 // | parallel for simd| flush | |
2220 // | parallel for simd| ordered | + (with simd clause) |
2221 // | parallel for simd| atomic | |
2222 // | parallel for simd| target | |
2223 // | parallel for simd| target parallel | |
2224 // | parallel for simd| target parallel | |
2225 // | | for | |
2226 // | parallel for simd| target enter | |
2227 // | | data | |
2228 // | parallel for simd| target exit | |
2229 // | | data | |
2230 // | parallel for simd| teams | |
2231 // | parallel for simd| cancellation | |
2232 // | | point | |
2233 // | parallel for simd| cancel | |
2234 // | parallel for simd| taskloop | |
2235 // | parallel for simd| taskloop simd | |
2236 // | parallel for simd| distribute | |
2237 // +------------------+-----------------+------------------------------------+
2238 // | sections | parallel | * |
2239 // | sections | for | + |
2240 // | sections | for simd | + |
2241 // | sections | master | + |
2242 // | sections | critical | * |
2243 // | sections | simd | * |
2244 // | sections | sections | + |
2245 // | sections | section | * |
2246 // | sections | single | + |
2247 // | sections | parallel for | * |
2248 // | sections |parallel for simd| * |
2249 // | sections |parallel sections| * |
2250 // | sections | task | * |
2251 // | sections | taskyield | * |
2252 // | sections | barrier | + |
2253 // | sections | taskwait | * |
2254 // | sections | taskgroup | * |
2255 // | sections | flush | * |
2256 // | sections | ordered | + |
2257 // | sections | atomic | * |
2258 // | sections | target | * |
2259 // | sections | target parallel | * |
2260 // | sections | target parallel | * |
2261 // | | for | |
2262 // | sections | target enter | * |
2263 // | | data | |
2264 // | sections | target exit | * |
2265 // | | data | |
2266 // | sections | teams | + |
2267 // | sections | cancellation | |
2268 // | | point | ! |
2269 // | sections | cancel | ! |
2270 // | sections | taskloop | * |
2271 // | sections | taskloop simd | * |
2272 // | sections | distribute | |
2273 // +------------------+-----------------+------------------------------------+
2274 // | section | parallel | * |
2275 // | section | for | + |
2276 // | section | for simd | + |
2277 // | section | master | + |
2278 // | section | critical | * |
2279 // | section | simd | * |
2280 // | section | sections | + |
2281 // | section | section | + |
2282 // | section | single | + |
2283 // | section | parallel for | * |
2284 // | section |parallel for simd| * |
2285 // | section |parallel sections| * |
2286 // | section | task | * |
2287 // | section | taskyield | * |
2288 // | section | barrier | + |
2289 // | section | taskwait | * |
2290 // | section | taskgroup | * |
2291 // | section | flush | * |
2292 // | section | ordered | + |
2293 // | section | atomic | * |
2294 // | section | target | * |
2295 // | section | target parallel | * |
2296 // | section | target parallel | * |
2297 // | | for | |
2298 // | section | target enter | * |
2299 // | | data | |
2300 // | section | target exit | * |
2301 // | | data | |
2302 // | section | teams | + |
2303 // | section | cancellation | |
2304 // | | point | ! |
2305 // | section | cancel | ! |
2306 // | section | taskloop | * |
2307 // | section | taskloop simd | * |
2308 // | section | distribute | |
2309 // +------------------+-----------------+------------------------------------+
2310 // | single | parallel | * |
2311 // | single | for | + |
2312 // | single | for simd | + |
2313 // | single | master | + |
2314 // | single | critical | * |
2315 // | single | simd | * |
2316 // | single | sections | + |
2317 // | single | section | + |
2318 // | single | single | + |
2319 // | single | parallel for | * |
2320 // | single |parallel for simd| * |
2321 // | single |parallel sections| * |
2322 // | single | task | * |
2323 // | single | taskyield | * |
2324 // | single | barrier | + |
2325 // | single | taskwait | * |
2326 // | single | taskgroup | * |
2327 // | single | flush | * |
2328 // | single | ordered | + |
2329 // | single | atomic | * |
2330 // | single | target | * |
2331 // | single | target parallel | * |
2332 // | single | target parallel | * |
2333 // | | for | |
2334 // | single | target enter | * |
2335 // | | data | |
2336 // | single | target exit | * |
2337 // | | data | |
2338 // | single | teams | + |
2339 // | single | cancellation | |
2340 // | | point | |
2341 // | single | cancel | |
2342 // | single | taskloop | * |
2343 // | single | taskloop simd | * |
2344 // | single | distribute | |
2345 // +------------------+-----------------+------------------------------------+
2346 // | parallel for | parallel | * |
2347 // | parallel for | for | + |
2348 // | parallel for | for simd | + |
2349 // | parallel for | master | + |
2350 // | parallel for | critical | * |
2351 // | parallel for | simd | * |
2352 // | parallel for | sections | + |
2353 // | parallel for | section | + |
2354 // | parallel for | single | + |
2355 // | parallel for | parallel for | * |
2356 // | parallel for |parallel for simd| * |
2357 // | parallel for |parallel sections| * |
2358 // | parallel for | task | * |
2359 // | parallel for | taskyield | * |
2360 // | parallel for | barrier | + |
2361 // | parallel for | taskwait | * |
2362 // | parallel for | taskgroup | * |
2363 // | parallel for | flush | * |
2364 // | parallel for | ordered | * (if construct is ordered) |
2365 // | parallel for | atomic | * |
2366 // | parallel for | target | * |
2367 // | parallel for | target parallel | * |
2368 // | parallel for | target parallel | * |
2369 // | | for | |
2370 // | parallel for | target enter | * |
2371 // | | data | |
2372 // | parallel for | target exit | * |
2373 // | | data | |
2374 // | parallel for | teams | + |
2375 // | parallel for | cancellation | |
2376 // | | point | ! |
2377 // | parallel for | cancel | ! |
2378 // | parallel for | taskloop | * |
2379 // | parallel for | taskloop simd | * |
2380 // | parallel for | distribute | |
2381 // +------------------+-----------------+------------------------------------+
2382 // | parallel sections| parallel | * |
2383 // | parallel sections| for | + |
2384 // | parallel sections| for simd | + |
2385 // | parallel sections| master | + |
2386 // | parallel sections| critical | + |
2387 // | parallel sections| simd | * |
2388 // | parallel sections| sections | + |
2389 // | parallel sections| section | * |
2390 // | parallel sections| single | + |
2391 // | parallel sections| parallel for | * |
2392 // | parallel sections|parallel for simd| * |
2393 // | parallel sections|parallel sections| * |
2394 // | parallel sections| task | * |
2395 // | parallel sections| taskyield | * |
2396 // | parallel sections| barrier | + |
2397 // | parallel sections| taskwait | * |
2398 // | parallel sections| taskgroup | * |
2399 // | parallel sections| flush | * |
2400 // | parallel sections| ordered | + |
2401 // | parallel sections| atomic | * |
2402 // | parallel sections| target | * |
2403 // | parallel sections| target parallel | * |
2404 // | parallel sections| target parallel | * |
2405 // | | for | |
2406 // | parallel sections| target enter | * |
2407 // | | data | |
2408 // | parallel sections| target exit | * |
2409 // | | data | |
2410 // | parallel sections| teams | + |
2411 // | parallel sections| cancellation | |
2412 // | | point | ! |
2413 // | parallel sections| cancel | ! |
2414 // | parallel sections| taskloop | * |
2415 // | parallel sections| taskloop simd | * |
2416 // | parallel sections| distribute | |
2417 // +------------------+-----------------+------------------------------------+
2418 // | task | parallel | * |
2419 // | task | for | + |
2420 // | task | for simd | + |
2421 // | task | master | + |
2422 // | task | critical | * |
2423 // | task | simd | * |
2424 // | task | sections | + |
2425 // | task | section | + |
2426 // | task | single | + |
2427 // | task | parallel for | * |
2428 // | task |parallel for simd| * |
2429 // | task |parallel sections| * |
2430 // | task | task | * |
2431 // | task | taskyield | * |
2432 // | task | barrier | + |
2433 // | task | taskwait | * |
2434 // | task | taskgroup | * |
2435 // | task | flush | * |
2436 // | task | ordered | + |
2437 // | task | atomic | * |
2438 // | task | target | * |
2439 // | task | target parallel | * |
2440 // | task | target parallel | * |
2441 // | | for | |
2442 // | task | target enter | * |
2443 // | | data | |
2444 // | task | target exit | * |
2445 // | | data | |
2446 // | task | teams | + |
2447 // | task | cancellation | |
2448 // | | point | ! |
2449 // | task | cancel | ! |
2450 // | task | taskloop | * |
2451 // | task | taskloop simd | * |
2452 // | task | distribute | |
2453 // +------------------+-----------------+------------------------------------+
2454 // | ordered | parallel | * |
2455 // | ordered | for | + |
2456 // | ordered | for simd | + |
2457 // | ordered | master | * |
2458 // | ordered | critical | * |
2459 // | ordered | simd | * |
2460 // | ordered | sections | + |
2461 // | ordered | section | + |
2462 // | ordered | single | + |
2463 // | ordered | parallel for | * |
2464 // | ordered |parallel for simd| * |
2465 // | ordered |parallel sections| * |
2466 // | ordered | task | * |
2467 // | ordered | taskyield | * |
2468 // | ordered | barrier | + |
2469 // | ordered | taskwait | * |
2470 // | ordered | taskgroup | * |
2471 // | ordered | flush | * |
2472 // | ordered | ordered | + |
2473 // | ordered | atomic | * |
2474 // | ordered | target | * |
2475 // | ordered | target parallel | * |
2476 // | ordered | target parallel | * |
2477 // | | for | |
2478 // | ordered | target enter | * |
2479 // | | data | |
2480 // | ordered | target exit | * |
2481 // | | data | |
2482 // | ordered | teams | + |
2483 // | ordered | cancellation | |
2484 // | | point | |
2485 // | ordered | cancel | |
2486 // | ordered | taskloop | * |
2487 // | ordered | taskloop simd | * |
2488 // | ordered | distribute | |
2489 // +------------------+-----------------+------------------------------------+
2490 // | atomic | parallel | |
2491 // | atomic | for | |
2492 // | atomic | for simd | |
2493 // | atomic | master | |
2494 // | atomic | critical | |
2495 // | atomic | simd | |
2496 // | atomic | sections | |
2497 // | atomic | section | |
2498 // | atomic | single | |
2499 // | atomic | parallel for | |
2500 // | atomic |parallel for simd| |
2501 // | atomic |parallel sections| |
2502 // | atomic | task | |
2503 // | atomic | taskyield | |
2504 // | atomic | barrier | |
2505 // | atomic | taskwait | |
2506 // | atomic | taskgroup | |
2507 // | atomic | flush | |
2508 // | atomic | ordered | |
2509 // | atomic | atomic | |
2510 // | atomic | target | |
2511 // | atomic | target parallel | |
2512 // | atomic | target parallel | |
2513 // | | for | |
2514 // | atomic | target enter | |
2515 // | | data | |
2516 // | atomic | target exit | |
2517 // | | data | |
2518 // | atomic | teams | |
2519 // | atomic | cancellation | |
2520 // | | point | |
2521 // | atomic | cancel | |
2522 // | atomic | taskloop | |
2523 // | atomic | taskloop simd | |
2524 // | atomic | distribute | |
2525 // +------------------+-----------------+------------------------------------+
2526 // | target | parallel | * |
2527 // | target | for | * |
2528 // | target | for simd | * |
2529 // | target | master | * |
2530 // | target | critical | * |
2531 // | target | simd | * |
2532 // | target | sections | * |
2533 // | target | section | * |
2534 // | target | single | * |
2535 // | target | parallel for | * |
2536 // | target |parallel for simd| * |
2537 // | target |parallel sections| * |
2538 // | target | task | * |
2539 // | target | taskyield | * |
2540 // | target | barrier | * |
2541 // | target | taskwait | * |
2542 // | target | taskgroup | * |
2543 // | target | flush | * |
2544 // | target | ordered | * |
2545 // | target | atomic | * |
2546 // | target | target | |
2547 // | target | target parallel | |
2548 // | target | target parallel | |
2549 // | | for | |
2550 // | target | target enter | |
2551 // | | data | |
2552 // | target | target exit | |
2553 // | | data | |
2554 // | target | teams | * |
2555 // | target | cancellation | |
2556 // | | point | |
2557 // | target | cancel | |
2558 // | target | taskloop | * |
2559 // | target | taskloop simd | * |
2560 // | target | distribute | |
2561 // +------------------+-----------------+------------------------------------+
2562 // | target parallel | parallel | * |
2563 // | target parallel | for | * |
2564 // | target parallel | for simd | * |
2565 // | target parallel | master | * |
2566 // | target parallel | critical | * |
2567 // | target parallel | simd | * |
2568 // | target parallel | sections | * |
2569 // | target parallel | section | * |
2570 // | target parallel | single | * |
2571 // | target parallel | parallel for | * |
2572 // | target parallel |parallel for simd| * |
2573 // | target parallel |parallel sections| * |
2574 // | target parallel | task | * |
2575 // | target parallel | taskyield | * |
2576 // | target parallel | barrier | * |
2577 // | target parallel | taskwait | * |
2578 // | target parallel | taskgroup | * |
2579 // | target parallel | flush | * |
2580 // | target parallel | ordered | * |
2581 // | target parallel | atomic | * |
2582 // | target parallel | target | |
2583 // | target parallel | target parallel | |
2584 // | target parallel | target parallel | |
2585 // | | for | |
2586 // | target parallel | target enter | |
2587 // | | data | |
2588 // | target parallel | target exit | |
2589 // | | data | |
2590 // | target parallel | teams | |
2591 // | target parallel | cancellation | |
2592 // | | point | ! |
2593 // | target parallel | cancel | ! |
2594 // | target parallel | taskloop | * |
2595 // | target parallel | taskloop simd | * |
2596 // | target parallel | distribute | |
2597 // +------------------+-----------------+------------------------------------+
2598 // | target parallel | parallel | * |
2599 // | for | | |
2600 // | target parallel | for | * |
2601 // | for | | |
2602 // | target parallel | for simd | * |
2603 // | for | | |
2604 // | target parallel | master | * |
2605 // | for | | |
2606 // | target parallel | critical | * |
2607 // | for | | |
2608 // | target parallel | simd | * |
2609 // | for | | |
2610 // | target parallel | sections | * |
2611 // | for | | |
2612 // | target parallel | section | * |
2613 // | for | | |
2614 // | target parallel | single | * |
2615 // | for | | |
2616 // | target parallel | parallel for | * |
2617 // | for | | |
2618 // | target parallel |parallel for simd| * |
2619 // | for | | |
2620 // | target parallel |parallel sections| * |
2621 // | for | | |
2622 // | target parallel | task | * |
2623 // | for | | |
2624 // | target parallel | taskyield | * |
2625 // | for | | |
2626 // | target parallel | barrier | * |
2627 // | for | | |
2628 // | target parallel | taskwait | * |
2629 // | for | | |
2630 // | target parallel | taskgroup | * |
2631 // | for | | |
2632 // | target parallel | flush | * |
2633 // | for | | |
2634 // | target parallel | ordered | * |
2635 // | for | | |
2636 // | target parallel | atomic | * |
2637 // | for | | |
2638 // | target parallel | target | |
2639 // | for | | |
2640 // | target parallel | target parallel | |
2641 // | for | | |
2642 // | target parallel | target parallel | |
2643 // | for | for | |
2644 // | target parallel | target enter | |
2645 // | for | data | |
2646 // | target parallel | target exit | |
2647 // | for | data | |
2648 // | target parallel | teams | |
2649 // | for | | |
2650 // | target parallel | cancellation | |
2651 // | for | point | ! |
2652 // | target parallel | cancel | ! |
2653 // | for | | |
2654 // | target parallel | taskloop | * |
2655 // | for | | |
2656 // | target parallel | taskloop simd | * |
2657 // | for | | |
2658 // | target parallel | distribute | |
2659 // | for | | |
2660 // +------------------+-----------------+------------------------------------+
2661 // | teams | parallel | * |
2662 // | teams | for | + |
2663 // | teams | for simd | + |
2664 // | teams | master | + |
2665 // | teams | critical | + |
2666 // | teams | simd | + |
2667 // | teams | sections | + |
2668 // | teams | section | + |
2669 // | teams | single | + |
2670 // | teams | parallel for | * |
2671 // | teams |parallel for simd| * |
2672 // | teams |parallel sections| * |
2673 // | teams | task | + |
2674 // | teams | taskyield | + |
2675 // | teams | barrier | + |
2676 // | teams | taskwait | + |
2677 // | teams | taskgroup | + |
2678 // | teams | flush | + |
2679 // | teams | ordered | + |
2680 // | teams | atomic | + |
2681 // | teams | target | + |
2682 // | teams | target parallel | + |
2683 // | teams | target parallel | + |
2684 // | | for | |
2685 // | teams | target enter | + |
2686 // | | data | |
2687 // | teams | target exit | + |
2688 // | | data | |
2689 // | teams | teams | + |
2690 // | teams | cancellation | |
2691 // | | point | |
2692 // | teams | cancel | |
2693 // | teams | taskloop | + |
2694 // | teams | taskloop simd | + |
2695 // | teams | distribute | ! |
2696 // +------------------+-----------------+------------------------------------+
2697 // | taskloop | parallel | * |
2698 // | taskloop | for | + |
2699 // | taskloop | for simd | + |
2700 // | taskloop | master | + |
2701 // | taskloop | critical | * |
2702 // | taskloop | simd | * |
2703 // | taskloop | sections | + |
2704 // | taskloop | section | + |
2705 // | taskloop | single | + |
2706 // | taskloop | parallel for | * |
2707 // | taskloop |parallel for simd| * |
2708 // | taskloop |parallel sections| * |
2709 // | taskloop | task | * |
2710 // | taskloop | taskyield | * |
2711 // | taskloop | barrier | + |
2712 // | taskloop | taskwait | * |
2713 // | taskloop | taskgroup | * |
2714 // | taskloop | flush | * |
2715 // | taskloop | ordered | + |
2716 // | taskloop | atomic | * |
2717 // | taskloop | target | * |
2718 // | taskloop | target parallel | * |
2719 // | taskloop | target parallel | * |
2720 // | | for | |
2721 // | taskloop | target enter | * |
2722 // | | data | |
2723 // | taskloop | target exit | * |
2724 // | | data | |
2725 // | taskloop | teams | + |
2726 // | taskloop | cancellation | |
2727 // | | point | |
2728 // | taskloop | cancel | |
2729 // | taskloop | taskloop | * |
2730 // | taskloop | distribute | |
2731 // +------------------+-----------------+------------------------------------+
2732 // | taskloop simd | parallel | |
2733 // | taskloop simd | for | |
2734 // | taskloop simd | for simd | |
2735 // | taskloop simd | master | |
2736 // | taskloop simd | critical | |
2737 // | taskloop simd | simd | * |
2738 // | taskloop simd | sections | |
2739 // | taskloop simd | section | |
2740 // | taskloop simd | single | |
2741 // | taskloop simd | parallel for | |
2742 // | taskloop simd |parallel for simd| |
2743 // | taskloop simd |parallel sections| |
2744 // | taskloop simd | task | |
2745 // | taskloop simd | taskyield | |
2746 // | taskloop simd | barrier | |
2747 // | taskloop simd | taskwait | |
2748 // | taskloop simd | taskgroup | |
2749 // | taskloop simd | flush | |
2750 // | taskloop simd | ordered | + (with simd clause) |
2751 // | taskloop simd | atomic | |
2752 // | taskloop simd | target | |
2753 // | taskloop simd | target parallel | |
2754 // | taskloop simd | target parallel | |
2755 // | | for | |
2756 // | taskloop simd | target enter | |
2757 // | | data | |
2758 // | taskloop simd | target exit | |
2759 // | | data | |
2760 // | taskloop simd | teams | |
2761 // | taskloop simd | cancellation | |
2762 // | | point | |
2763 // | taskloop simd | cancel | |
2764 // | taskloop simd | taskloop | |
2765 // | taskloop simd | taskloop simd | |
2766 // | taskloop simd | distribute | |
2767 // +------------------+-----------------+------------------------------------+
2768 // | distribute | parallel | * |
2769 // | distribute | for | * |
2770 // | distribute | for simd | * |
2771 // | distribute | master | * |
2772 // | distribute | critical | * |
2773 // | distribute | simd | * |
2774 // | distribute | sections | * |
2775 // | distribute | section | * |
2776 // | distribute | single | * |
2777 // | distribute | parallel for | * |
2778 // | distribute |parallel for simd| * |
2779 // | distribute |parallel sections| * |
2780 // | distribute | task | * |
2781 // | distribute | taskyield | * |
2782 // | distribute | barrier | * |
2783 // | distribute | taskwait | * |
2784 // | distribute | taskgroup | * |
2785 // | distribute | flush | * |
2786 // | distribute | ordered | + |
2787 // | distribute | atomic | * |
2788 // | distribute | target | |
2789 // | distribute | target parallel | |
2790 // | distribute | target parallel | |
2791 // | | for | |
2792 // | distribute | target enter | |
2793 // | | data | |
2794 // | distribute | target exit | |
2795 // | | data | |
2796 // | distribute | teams | |
2797 // | distribute | cancellation | + |
2798 // | | point | |
2799 // | distribute | cancel | + |
2800 // | distribute | taskloop | * |
2801 // | distribute | taskloop simd | * |
2802 // | distribute | distribute | |
2803 // +------------------+-----------------+------------------------------------+
2804 if (Stack->getCurScope()) {
2805 auto ParentRegion = Stack->getParentDirective();
2806 auto OffendingRegion = ParentRegion;
2807 bool NestingProhibited = false;
2808 bool CloseNesting = true;
2809 enum {
2810 NoRecommend,
2811 ShouldBeInParallelRegion,
2812 ShouldBeInOrderedRegion,
2813 ShouldBeInTargetRegion,
2814 ShouldBeInTeamsRegion
2815 } Recommend = NoRecommend;
2816 if (isOpenMPSimdDirective(ParentRegion) && CurrentRegion != OMPD_ordered &&
2817 CurrentRegion != OMPD_simd) {
2818 // OpenMP [2.16, Nesting of Regions]
2819 // OpenMP constructs may not be nested inside a simd region.
2820 // OpenMP [2.8.1,simd Construct, Restrictions]
2821 // An ordered construct with the simd clause is the only OpenMP construct
2822 // that can appear in the simd region.
2823 SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region_simd);
2824 return true;
2825 }
2826 if (ParentRegion == OMPD_atomic) {
2827 // OpenMP [2.16, Nesting of Regions]
2828 // OpenMP constructs may not be nested inside an atomic region.
2829 SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region_atomic);
2830 return true;
2831 }
2832 if (CurrentRegion == OMPD_section) {
2833 // OpenMP [2.7.2, sections Construct, Restrictions]
2834 // Orphaned section directives are prohibited. That is, the section
2835 // directives must appear within the sections construct and must not be
2836 // encountered elsewhere in the sections region.
2837 if (ParentRegion != OMPD_sections &&
2838 ParentRegion != OMPD_parallel_sections) {
2839 SemaRef.Diag(StartLoc, diag::err_omp_orphaned_section_directive)
2840 << (ParentRegion != OMPD_unknown)
2841 << getOpenMPDirectiveName(ParentRegion);
2842 return true;
2843 }
2844 return false;
2845 }
2846 // Allow some constructs to be orphaned (they could be used in functions,
2847 // called from OpenMP regions with the required preconditions).
2848 if (ParentRegion == OMPD_unknown)
2849 return false;
2850 if (CurrentRegion == OMPD_cancellation_point ||
2851 CurrentRegion == OMPD_cancel) {
2852 // OpenMP [2.16, Nesting of Regions]
2853 // A cancellation point construct for which construct-type-clause is
2854 // taskgroup must be nested inside a task construct. A cancellation
2855 // point construct for which construct-type-clause is not taskgroup must
2856 // be closely nested inside an OpenMP construct that matches the type
2857 // specified in construct-type-clause.
2858 // A cancel construct for which construct-type-clause is taskgroup must be
2859 // nested inside a task construct. A cancel construct for which
2860 // construct-type-clause is not taskgroup must be closely nested inside an
2861 // OpenMP construct that matches the type specified in
2862 // construct-type-clause.
2863 NestingProhibited =
2864 !((CancelRegion == OMPD_parallel &&
2865 (ParentRegion == OMPD_parallel ||
2866 ParentRegion == OMPD_target_parallel)) ||
2867 (CancelRegion == OMPD_for &&
2868 (ParentRegion == OMPD_for || ParentRegion == OMPD_parallel_for ||
2869 ParentRegion == OMPD_target_parallel_for)) ||
2870 (CancelRegion == OMPD_taskgroup && ParentRegion == OMPD_task) ||
2871 (CancelRegion == OMPD_sections &&
2872 (ParentRegion == OMPD_section || ParentRegion == OMPD_sections ||
2873 ParentRegion == OMPD_parallel_sections)));
2874 } else if (CurrentRegion == OMPD_master) {
2875 // OpenMP [2.16, Nesting of Regions]
2876 // A master region may not be closely nested inside a worksharing,
2877 // atomic, or explicit task region.
2878 NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
2879 isOpenMPTaskingDirective(ParentRegion);
2880 } else if (CurrentRegion == OMPD_critical && CurrentName.getName()) {
2881 // OpenMP [2.16, Nesting of Regions]
2882 // A critical region may not be nested (closely or otherwise) inside a
2883 // critical region with the same name. Note that this restriction is not
2884 // sufficient to prevent deadlock.
2885 SourceLocation PreviousCriticalLoc;
2886 bool DeadLock =
2887 Stack->hasDirective([CurrentName, &PreviousCriticalLoc](
2888 OpenMPDirectiveKind K,
2889 const DeclarationNameInfo &DNI,
2890 SourceLocation Loc)
2891 ->bool {
2892 if (K == OMPD_critical &&
2893 DNI.getName() == CurrentName.getName()) {
2894 PreviousCriticalLoc = Loc;
2895 return true;
2896 } else
2897 return false;
2898 },
2899 false /* skip top directive */);
2900 if (DeadLock) {
2901 SemaRef.Diag(StartLoc,
2902 diag::err_omp_prohibited_region_critical_same_name)
2903 << CurrentName.getName();
2904 if (PreviousCriticalLoc.isValid())
2905 SemaRef.Diag(PreviousCriticalLoc,
2906 diag::note_omp_previous_critical_region);
2907 return true;
2908 }
2909 } else if (CurrentRegion == OMPD_barrier) {
2910 // OpenMP [2.16, Nesting of Regions]
2911 // A barrier region may not be closely nested inside a worksharing,
2912 // explicit task, critical, ordered, atomic, or master region.
2913 NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
2914 isOpenMPTaskingDirective(ParentRegion) ||
2915 ParentRegion == OMPD_master ||
2916 ParentRegion == OMPD_critical ||
2917 ParentRegion == OMPD_ordered;
2918 } else if (isOpenMPWorksharingDirective(CurrentRegion) &&
2919 !isOpenMPParallelDirective(CurrentRegion)) {
2920 // OpenMP [2.16, Nesting of Regions]
2921 // A worksharing region may not be closely nested inside a worksharing,
2922 // explicit task, critical, ordered, atomic, or master region.
2923 NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) ||
2924 isOpenMPTaskingDirective(ParentRegion) ||
2925 ParentRegion == OMPD_master ||
2926 ParentRegion == OMPD_critical ||
2927 ParentRegion == OMPD_ordered;
2928 Recommend = ShouldBeInParallelRegion;
2929 } else if (CurrentRegion == OMPD_ordered) {
2930 // OpenMP [2.16, Nesting of Regions]
2931 // An ordered region may not be closely nested inside a critical,
2932 // atomic, or explicit task region.
2933 // An ordered region must be closely nested inside a loop region (or
2934 // parallel loop region) with an ordered clause.
2935 // OpenMP [2.8.1,simd Construct, Restrictions]
2936 // An ordered construct with the simd clause is the only OpenMP construct
2937 // that can appear in the simd region.
2938 NestingProhibited = ParentRegion == OMPD_critical ||
2939 isOpenMPTaskingDirective(ParentRegion) ||
2940 !(isOpenMPSimdDirective(ParentRegion) ||
2941 Stack->isParentOrderedRegion());
2942 Recommend = ShouldBeInOrderedRegion;
2943 } else if (isOpenMPTeamsDirective(CurrentRegion)) {
2944 // OpenMP [2.16, Nesting of Regions]
2945 // If specified, a teams construct must be contained within a target
2946 // construct.
2947 NestingProhibited = ParentRegion != OMPD_target;
2948 Recommend = ShouldBeInTargetRegion;
2949 Stack->setParentTeamsRegionLoc(Stack->getConstructLoc());
2950 }
2951 if (!NestingProhibited && isOpenMPTeamsDirective(ParentRegion)) {
2952 // OpenMP [2.16, Nesting of Regions]
2953 // distribute, parallel, parallel sections, parallel workshare, and the
2954 // parallel loop and parallel loop SIMD constructs are the only OpenMP
2955 // constructs that can be closely nested in the teams region.
2956 NestingProhibited = !isOpenMPParallelDirective(CurrentRegion) &&
2957 !isOpenMPDistributeDirective(CurrentRegion);
2958 Recommend = ShouldBeInParallelRegion;
2959 }
2960 if (!NestingProhibited && isOpenMPDistributeDirective(CurrentRegion)) {
2961 // OpenMP 4.5 [2.17 Nesting of Regions]
2962 // The region associated with the distribute construct must be strictly
2963 // nested inside a teams region
2964 NestingProhibited = !isOpenMPTeamsDirective(ParentRegion);
2965 Recommend = ShouldBeInTeamsRegion;
2966 }
2967 if (!NestingProhibited &&
2968 (isOpenMPTargetExecutionDirective(CurrentRegion) ||
2969 isOpenMPTargetDataManagementDirective(CurrentRegion))) {
2970 // OpenMP 4.5 [2.17 Nesting of Regions]
2971 // If a target, target update, target data, target enter data, or
2972 // target exit data construct is encountered during execution of a
2973 // target region, the behavior is unspecified.
2974 NestingProhibited = Stack->hasDirective(
2975 [&OffendingRegion](OpenMPDirectiveKind K, const DeclarationNameInfo &,
2976 SourceLocation) -> bool {
2977 if (isOpenMPTargetExecutionDirective(K)) {
2978 OffendingRegion = K;
2979 return true;
2980 } else
2981 return false;
2982 },
2983 false /* don't skip top directive */);
2984 CloseNesting = false;
2985 }
2986 if (NestingProhibited) {
2987 SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region)
2988 << CloseNesting << getOpenMPDirectiveName(OffendingRegion)
2989 << Recommend << getOpenMPDirectiveName(CurrentRegion);
2990 return true;
2991 }
2992 }
2993 return false;
2994}
2995
2996static bool checkIfClauses(Sema &S, OpenMPDirectiveKind Kind,
2997 ArrayRef<OMPClause *> Clauses,
2998 ArrayRef<OpenMPDirectiveKind> AllowedNameModifiers) {
2999 bool ErrorFound = false;
3000 unsigned NamedModifiersNumber = 0;
3001 SmallVector<const OMPIfClause *, OMPC_unknown + 1> FoundNameModifiers(
3002 OMPD_unknown + 1);
3003 SmallVector<SourceLocation, 4> NameModifierLoc;
3004 for (const auto *C : Clauses) {
3005 if (const auto *IC = dyn_cast_or_null<OMPIfClause>(C)) {
3006 // At most one if clause without a directive-name-modifier can appear on
3007 // the directive.
3008 OpenMPDirectiveKind CurNM = IC->getNameModifier();
3009 if (FoundNameModifiers[CurNM]) {
3010 S.Diag(C->getLocStart(), diag::err_omp_more_one_clause)
3011 << getOpenMPDirectiveName(Kind) << getOpenMPClauseName(OMPC_if)
3012 << (CurNM != OMPD_unknown) << getOpenMPDirectiveName(CurNM);
3013 ErrorFound = true;
3014 } else if (CurNM != OMPD_unknown) {
3015 NameModifierLoc.push_back(IC->getNameModifierLoc());
3016 ++NamedModifiersNumber;
3017 }
3018 FoundNameModifiers[CurNM] = IC;
3019 if (CurNM == OMPD_unknown)
3020 continue;
3021 // Check if the specified name modifier is allowed for the current
3022 // directive.
3023 // At most one if clause with the particular directive-name-modifier can
3024 // appear on the directive.
3025 bool MatchFound = false;
3026 for (auto NM : AllowedNameModifiers) {
3027 if (CurNM == NM) {
3028 MatchFound = true;
3029 break;
3030 }
3031 }
3032 if (!MatchFound) {
3033 S.Diag(IC->getNameModifierLoc(),
3034 diag::err_omp_wrong_if_directive_name_modifier)
3035 << getOpenMPDirectiveName(CurNM) << getOpenMPDirectiveName(Kind);
3036 ErrorFound = true;
3037 }
3038 }
3039 }
3040 // If any if clause on the directive includes a directive-name-modifier then
3041 // all if clauses on the directive must include a directive-name-modifier.
3042 if (FoundNameModifiers[OMPD_unknown] && NamedModifiersNumber > 0) {
3043 if (NamedModifiersNumber == AllowedNameModifiers.size()) {
3044 S.Diag(FoundNameModifiers[OMPD_unknown]->getLocStart(),
3045 diag::err_omp_no_more_if_clause);
3046 } else {
3047 std::string Values;
3048 std::string Sep(", ");
3049 unsigned AllowedCnt = 0;
3050 unsigned TotalAllowedNum =
3051 AllowedNameModifiers.size() - NamedModifiersNumber;
3052 for (unsigned Cnt = 0, End = AllowedNameModifiers.size(); Cnt < End;
3053 ++Cnt) {
3054 OpenMPDirectiveKind NM = AllowedNameModifiers[Cnt];
3055 if (!FoundNameModifiers[NM]) {
3056 Values += "'";
3057 Values += getOpenMPDirectiveName(NM);
3058 Values += "'";
3059 if (AllowedCnt + 2 == TotalAllowedNum)
3060 Values += " or ";
3061 else if (AllowedCnt + 1 != TotalAllowedNum)
3062 Values += Sep;
3063 ++AllowedCnt;
3064 }
3065 }
3066 S.Diag(FoundNameModifiers[OMPD_unknown]->getCondition()->getLocStart(),
3067 diag::err_omp_unnamed_if_clause)
3068 << (TotalAllowedNum > 1) << Values;
3069 }
3070 for (auto Loc : NameModifierLoc) {
3071 S.Diag(Loc, diag::note_omp_previous_named_if_clause);
3072 }
3073 ErrorFound = true;
3074 }
3075 return ErrorFound;
3076}
3077
3078StmtResult Sema::ActOnOpenMPExecutableDirective(
3079 OpenMPDirectiveKind Kind, const DeclarationNameInfo &DirName,
3080 OpenMPDirectiveKind CancelRegion, ArrayRef<OMPClause *> Clauses,
3081 Stmt *AStmt, SourceLocation StartLoc, SourceLocation EndLoc) {
3082 StmtResult Res = StmtError();
3083 if (CheckNestingOfRegions(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), Kind, DirName, CancelRegion,
3084 StartLoc))
3085 return StmtError();
3086
3087 llvm::SmallVector<OMPClause *, 8> ClausesWithImplicit;
3088 llvm::DenseMap<ValueDecl *, Expr *> VarsWithInheritedDSA;
3089 bool ErrorFound = false;
3090 ClausesWithImplicit.append(Clauses.begin(), Clauses.end());
3091 if (AStmt) {
3092 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3092, __PRETTY_FUNCTION__));
3093
3094 // Check default data sharing attributes for referenced variables.
3095 DSAAttrChecker DSAChecker(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), *this, cast<CapturedStmt>(AStmt));
3096 DSAChecker.Visit(cast<CapturedStmt>(AStmt)->getCapturedStmt());
3097 if (DSAChecker.isErrorFound())
3098 return StmtError();
3099 // Generate list of implicitly defined firstprivate variables.
3100 VarsWithInheritedDSA = DSAChecker.getVarsWithInheritedDSA();
3101
3102 if (!DSAChecker.getImplicitFirstprivate().empty()) {
3103 if (OMPClause *Implicit = ActOnOpenMPFirstprivateClause(
3104 DSAChecker.getImplicitFirstprivate(), SourceLocation(),
3105 SourceLocation(), SourceLocation())) {
3106 ClausesWithImplicit.push_back(Implicit);
3107 ErrorFound = cast<OMPFirstprivateClause>(Implicit)->varlist_size() !=
3108 DSAChecker.getImplicitFirstprivate().size();
3109 } else
3110 ErrorFound = true;
3111 }
3112 }
3113
3114 llvm::SmallVector<OpenMPDirectiveKind, 4> AllowedNameModifiers;
3115 switch (Kind) {
3116 case OMPD_parallel:
3117 Res = ActOnOpenMPParallelDirective(ClausesWithImplicit, AStmt, StartLoc,
3118 EndLoc);
3119 AllowedNameModifiers.push_back(OMPD_parallel);
3120 break;
3121 case OMPD_simd:
3122 Res = ActOnOpenMPSimdDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc,
3123 VarsWithInheritedDSA);
3124 break;
3125 case OMPD_for:
3126 Res = ActOnOpenMPForDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc,
3127 VarsWithInheritedDSA);
3128 break;
3129 case OMPD_for_simd:
3130 Res = ActOnOpenMPForSimdDirective(ClausesWithImplicit, AStmt, StartLoc,
3131 EndLoc, VarsWithInheritedDSA);
3132 break;
3133 case OMPD_sections:
3134 Res = ActOnOpenMPSectionsDirective(ClausesWithImplicit, AStmt, StartLoc,
3135 EndLoc);
3136 break;
3137 case OMPD_section:
3138 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp section' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp section' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3139, __PRETTY_FUNCTION__))
3139 "No clauses are allowed for 'omp section' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp section' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp section' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3139, __PRETTY_FUNCTION__));
3140 Res = ActOnOpenMPSectionDirective(AStmt, StartLoc, EndLoc);
3141 break;
3142 case OMPD_single:
3143 Res = ActOnOpenMPSingleDirective(ClausesWithImplicit, AStmt, StartLoc,
3144 EndLoc);
3145 break;
3146 case OMPD_master:
3147 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp master' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp master' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3148, __PRETTY_FUNCTION__))
3148 "No clauses are allowed for 'omp master' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp master' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp master' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3148, __PRETTY_FUNCTION__));
3149 Res = ActOnOpenMPMasterDirective(AStmt, StartLoc, EndLoc);
3150 break;
3151 case OMPD_critical:
3152 Res = ActOnOpenMPCriticalDirective(DirName, ClausesWithImplicit, AStmt,
3153 StartLoc, EndLoc);
3154 break;
3155 case OMPD_parallel_for:
3156 Res = ActOnOpenMPParallelForDirective(ClausesWithImplicit, AStmt, StartLoc,
3157 EndLoc, VarsWithInheritedDSA);
3158 AllowedNameModifiers.push_back(OMPD_parallel);
3159 break;
3160 case OMPD_parallel_for_simd:
3161 Res = ActOnOpenMPParallelForSimdDirective(
3162 ClausesWithImplicit, AStmt, StartLoc, EndLoc, VarsWithInheritedDSA);
3163 AllowedNameModifiers.push_back(OMPD_parallel);
3164 break;
3165 case OMPD_parallel_sections:
3166 Res = ActOnOpenMPParallelSectionsDirective(ClausesWithImplicit, AStmt,
3167 StartLoc, EndLoc);
3168 AllowedNameModifiers.push_back(OMPD_parallel);
3169 break;
3170 case OMPD_task:
3171 Res =
3172 ActOnOpenMPTaskDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc);
3173 AllowedNameModifiers.push_back(OMPD_task);
3174 break;
3175 case OMPD_taskyield:
3176 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp taskyield' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp taskyield' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3177, __PRETTY_FUNCTION__))
3177 "No clauses are allowed for 'omp taskyield' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp taskyield' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp taskyield' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3177, __PRETTY_FUNCTION__));
3178 assert(AStmt == nullptr &&((AStmt == nullptr && "No associated statement allowed for 'omp taskyield' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp taskyield' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3179, __PRETTY_FUNCTION__))
3179 "No associated statement allowed for 'omp taskyield' directive")((AStmt == nullptr && "No associated statement allowed for 'omp taskyield' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp taskyield' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3179, __PRETTY_FUNCTION__));
3180 Res = ActOnOpenMPTaskyieldDirective(StartLoc, EndLoc);
3181 break;
3182 case OMPD_barrier:
3183 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp barrier' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp barrier' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3184, __PRETTY_FUNCTION__))
3184 "No clauses are allowed for 'omp barrier' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp barrier' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp barrier' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3184, __PRETTY_FUNCTION__));
3185 assert(AStmt == nullptr &&((AStmt == nullptr && "No associated statement allowed for 'omp barrier' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp barrier' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3186, __PRETTY_FUNCTION__))
3186 "No associated statement allowed for 'omp barrier' directive")((AStmt == nullptr && "No associated statement allowed for 'omp barrier' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp barrier' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3186, __PRETTY_FUNCTION__));
3187 Res = ActOnOpenMPBarrierDirective(StartLoc, EndLoc);
3188 break;
3189 case OMPD_taskwait:
3190 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp taskwait' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp taskwait' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3191, __PRETTY_FUNCTION__))
3191 "No clauses are allowed for 'omp taskwait' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp taskwait' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp taskwait' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3191, __PRETTY_FUNCTION__));
3192 assert(AStmt == nullptr &&((AStmt == nullptr && "No associated statement allowed for 'omp taskwait' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp taskwait' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3193, __PRETTY_FUNCTION__))
3193 "No associated statement allowed for 'omp taskwait' directive")((AStmt == nullptr && "No associated statement allowed for 'omp taskwait' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp taskwait' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3193, __PRETTY_FUNCTION__));
3194 Res = ActOnOpenMPTaskwaitDirective(StartLoc, EndLoc);
3195 break;
3196 case OMPD_taskgroup:
3197 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp taskgroup' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp taskgroup' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3198, __PRETTY_FUNCTION__))
3198 "No clauses are allowed for 'omp taskgroup' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp taskgroup' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp taskgroup' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3198, __PRETTY_FUNCTION__));
3199 Res = ActOnOpenMPTaskgroupDirective(AStmt, StartLoc, EndLoc);
3200 break;
3201 case OMPD_flush:
3202 assert(AStmt == nullptr &&((AStmt == nullptr && "No associated statement allowed for 'omp flush' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp flush' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3203, __PRETTY_FUNCTION__))
3203 "No associated statement allowed for 'omp flush' directive")((AStmt == nullptr && "No associated statement allowed for 'omp flush' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp flush' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3203, __PRETTY_FUNCTION__));
3204 Res = ActOnOpenMPFlushDirective(ClausesWithImplicit, StartLoc, EndLoc);
3205 break;
3206 case OMPD_ordered:
3207 Res = ActOnOpenMPOrderedDirective(ClausesWithImplicit, AStmt, StartLoc,
3208 EndLoc);
3209 break;
3210 case OMPD_atomic:
3211 Res = ActOnOpenMPAtomicDirective(ClausesWithImplicit, AStmt, StartLoc,
3212 EndLoc);
3213 break;
3214 case OMPD_teams:
3215 Res =
3216 ActOnOpenMPTeamsDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc);
3217 break;
3218 case OMPD_target:
3219 Res = ActOnOpenMPTargetDirective(ClausesWithImplicit, AStmt, StartLoc,
3220 EndLoc);
3221 AllowedNameModifiers.push_back(OMPD_target);
3222 break;
3223 case OMPD_target_parallel:
3224 Res = ActOnOpenMPTargetParallelDirective(ClausesWithImplicit, AStmt,
3225 StartLoc, EndLoc);
3226 AllowedNameModifiers.push_back(OMPD_target);
3227 AllowedNameModifiers.push_back(OMPD_parallel);
3228 break;
3229 case OMPD_target_parallel_for:
3230 Res = ActOnOpenMPTargetParallelForDirective(
3231 ClausesWithImplicit, AStmt, StartLoc, EndLoc, VarsWithInheritedDSA);
3232 AllowedNameModifiers.push_back(OMPD_target);
3233 AllowedNameModifiers.push_back(OMPD_parallel);
3234 break;
3235 case OMPD_cancellation_point:
3236 assert(ClausesWithImplicit.empty() &&((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp cancellation point' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp cancellation point' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3237, __PRETTY_FUNCTION__))
3237 "No clauses are allowed for 'omp cancellation point' directive")((ClausesWithImplicit.empty() && "No clauses are allowed for 'omp cancellation point' directive"
) ? static_cast<void> (0) : __assert_fail ("ClausesWithImplicit.empty() && \"No clauses are allowed for 'omp cancellation point' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3237, __PRETTY_FUNCTION__));
3238 assert(AStmt == nullptr && "No associated statement allowed for 'omp "((AStmt == nullptr && "No associated statement allowed for 'omp "
"cancellation point' directive") ? static_cast<void> (
0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp \" \"cancellation point' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3239, __PRETTY_FUNCTION__))
3239 "cancellation point' directive")((AStmt == nullptr && "No associated statement allowed for 'omp "
"cancellation point' directive") ? static_cast<void> (
0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp \" \"cancellation point' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3239, __PRETTY_FUNCTION__));
3240 Res = ActOnOpenMPCancellationPointDirective(StartLoc, EndLoc, CancelRegion);
3241 break;
3242 case OMPD_cancel:
3243 assert(AStmt == nullptr &&((AStmt == nullptr && "No associated statement allowed for 'omp cancel' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp cancel' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3244, __PRETTY_FUNCTION__))
3244 "No associated statement allowed for 'omp cancel' directive")((AStmt == nullptr && "No associated statement allowed for 'omp cancel' directive"
) ? static_cast<void> (0) : __assert_fail ("AStmt == nullptr && \"No associated statement allowed for 'omp cancel' directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3244, __PRETTY_FUNCTION__));
3245 Res = ActOnOpenMPCancelDirective(ClausesWithImplicit, StartLoc, EndLoc,
3246 CancelRegion);
3247 AllowedNameModifiers.push_back(OMPD_cancel);
3248 break;
3249 case OMPD_target_data:
3250 Res = ActOnOpenMPTargetDataDirective(ClausesWithImplicit, AStmt, StartLoc,
3251 EndLoc);
3252 AllowedNameModifiers.push_back(OMPD_target_data);
3253 break;
3254 case OMPD_target_enter_data:
3255 Res = ActOnOpenMPTargetEnterDataDirective(ClausesWithImplicit, StartLoc,
3256 EndLoc);
3257 AllowedNameModifiers.push_back(OMPD_target_enter_data);
3258 break;
3259 case OMPD_target_exit_data:
3260 Res = ActOnOpenMPTargetExitDataDirective(ClausesWithImplicit, StartLoc,
3261 EndLoc);
3262 AllowedNameModifiers.push_back(OMPD_target_exit_data);
3263 break;
3264 case OMPD_taskloop:
3265 Res = ActOnOpenMPTaskLoopDirective(ClausesWithImplicit, AStmt, StartLoc,
3266 EndLoc, VarsWithInheritedDSA);
3267 AllowedNameModifiers.push_back(OMPD_taskloop);
3268 break;
3269 case OMPD_taskloop_simd:
3270 Res = ActOnOpenMPTaskLoopSimdDirective(ClausesWithImplicit, AStmt, StartLoc,
3271 EndLoc, VarsWithInheritedDSA);
3272 AllowedNameModifiers.push_back(OMPD_taskloop);
3273 break;
3274 case OMPD_distribute:
3275 Res = ActOnOpenMPDistributeDirective(ClausesWithImplicit, AStmt, StartLoc,
3276 EndLoc, VarsWithInheritedDSA);
3277 break;
3278 case OMPD_target_update:
3279 assert(!AStmt && "Statement is not allowed for target update")((!AStmt && "Statement is not allowed for target update"
) ? static_cast<void> (0) : __assert_fail ("!AStmt && \"Statement is not allowed for target update\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3279, __PRETTY_FUNCTION__));
3280 Res =
3281 ActOnOpenMPTargetUpdateDirective(ClausesWithImplicit, StartLoc, EndLoc);
3282 AllowedNameModifiers.push_back(OMPD_target_update);
3283 break;
3284 case OMPD_declare_target:
3285 case OMPD_end_declare_target:
3286 case OMPD_threadprivate:
3287 case OMPD_declare_reduction:
3288 case OMPD_declare_simd:
3289 llvm_unreachable("OpenMP Directive is not allowed")::llvm::llvm_unreachable_internal("OpenMP Directive is not allowed"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3289);
3290 case OMPD_unknown:
3291 llvm_unreachable("Unknown OpenMP directive")::llvm::llvm_unreachable_internal("Unknown OpenMP directive",
"/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3291);
3292 }
3293
3294 for (auto P : VarsWithInheritedDSA) {
3295 Diag(P.second->getExprLoc(), diag::err_omp_no_dsa_for_variable)
3296 << P.first << P.second->getSourceRange();
3297 }
3298 ErrorFound = !VarsWithInheritedDSA.empty() || ErrorFound;
3299
3300 if (!AllowedNameModifiers.empty())
3301 ErrorFound = checkIfClauses(*this, Kind, Clauses, AllowedNameModifiers) ||
3302 ErrorFound;
3303
3304 if (ErrorFound)
3305 return StmtError();
3306 return Res;
3307}
3308
3309Sema::DeclGroupPtrTy Sema::ActOnOpenMPDeclareSimdDirective(
3310 DeclGroupPtrTy DG, OMPDeclareSimdDeclAttr::BranchStateTy BS, Expr *Simdlen,
3311 ArrayRef<Expr *> Uniforms, ArrayRef<Expr *> Aligneds,
3312 ArrayRef<Expr *> Alignments, ArrayRef<Expr *> Linears,
3313 ArrayRef<unsigned> LinModifiers, ArrayRef<Expr *> Steps, SourceRange SR) {
3314 assert(Aligneds.size() == Alignments.size())((Aligneds.size() == Alignments.size()) ? static_cast<void
> (0) : __assert_fail ("Aligneds.size() == Alignments.size()"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3314, __PRETTY_FUNCTION__));
3315 assert(Linears.size() == LinModifiers.size())((Linears.size() == LinModifiers.size()) ? static_cast<void
> (0) : __assert_fail ("Linears.size() == LinModifiers.size()"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3315, __PRETTY_FUNCTION__));
3316 assert(Linears.size() == Steps.size())((Linears.size() == Steps.size()) ? static_cast<void> (
0) : __assert_fail ("Linears.size() == Steps.size()", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3316, __PRETTY_FUNCTION__));
3317 if (!DG || DG.get().isNull())
3318 return DeclGroupPtrTy();
3319
3320 if (!DG.get().isSingleDecl()) {
3321 Diag(SR.getBegin(), diag::err_omp_single_decl_in_declare_simd);
3322 return DG;
3323 }
3324 auto *ADecl = DG.get().getSingleDecl();
3325 if (auto *FTD = dyn_cast<FunctionTemplateDecl>(ADecl))
3326 ADecl = FTD->getTemplatedDecl();
3327
3328 auto *FD = dyn_cast<FunctionDecl>(ADecl);
3329 if (!FD) {
3330 Diag(ADecl->getLocation(), diag::err_omp_function_expected);
3331 return DeclGroupPtrTy();
3332 }
3333
3334 // OpenMP [2.8.2, declare simd construct, Description]
3335 // The parameter of the simdlen clause must be a constant positive integer
3336 // expression.
3337 ExprResult SL;
3338 if (Simdlen)
3339 SL = VerifyPositiveIntegerConstantInClause(Simdlen, OMPC_simdlen);
3340 // OpenMP [2.8.2, declare simd construct, Description]
3341 // The special this pointer can be used as if was one of the arguments to the
3342 // function in any of the linear, aligned, or uniform clauses.
3343 // The uniform clause declares one or more arguments to have an invariant
3344 // value for all concurrent invocations of the function in the execution of a
3345 // single SIMD loop.
3346 llvm::DenseMap<Decl *, Expr *> UniformedArgs;
3347 Expr *UniformedLinearThis = nullptr;
3348 for (auto *E : Uniforms) {
3349 E = E->IgnoreParenImpCasts();
3350 if (auto *DRE = dyn_cast<DeclRefExpr>(E))
3351 if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl()))
3352 if (FD->getNumParams() > PVD->getFunctionScopeIndex() &&
3353 FD->getParamDecl(PVD->getFunctionScopeIndex())
3354 ->getCanonicalDecl() == PVD->getCanonicalDecl()) {
3355 UniformedArgs.insert(std::make_pair(PVD->getCanonicalDecl(), E));
3356 continue;
3357 }
3358 if (isa<CXXThisExpr>(E)) {
3359 UniformedLinearThis = E;
3360 continue;
3361 }
3362 Diag(E->getExprLoc(), diag::err_omp_param_or_this_in_clause)
3363 << FD->getDeclName() << (isa<CXXMethodDecl>(ADecl) ? 1 : 0);
3364 }
3365 // OpenMP [2.8.2, declare simd construct, Description]
3366 // The aligned clause declares that the object to which each list item points
3367 // is aligned to the number of bytes expressed in the optional parameter of
3368 // the aligned clause.
3369 // The special this pointer can be used as if was one of the arguments to the
3370 // function in any of the linear, aligned, or uniform clauses.
3371 // The type of list items appearing in the aligned clause must be array,
3372 // pointer, reference to array, or reference to pointer.
3373 llvm::DenseMap<Decl *, Expr *> AlignedArgs;
3374 Expr *AlignedThis = nullptr;
3375 for (auto *E : Aligneds) {
3376 E = E->IgnoreParenImpCasts();
3377 if (auto *DRE = dyn_cast<DeclRefExpr>(E))
3378 if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) {
3379 auto *CanonPVD = PVD->getCanonicalDecl();
3380 if (FD->getNumParams() > PVD->getFunctionScopeIndex() &&
3381 FD->getParamDecl(PVD->getFunctionScopeIndex())
3382 ->getCanonicalDecl() == CanonPVD) {
3383 // OpenMP [2.8.1, simd construct, Restrictions]
3384 // A list-item cannot appear in more than one aligned clause.
3385 if (AlignedArgs.count(CanonPVD) > 0) {
3386 Diag(E->getExprLoc(), diag::err_omp_aligned_twice)
3387 << 1 << E->getSourceRange();
3388 Diag(AlignedArgs[CanonPVD]->getExprLoc(),
3389 diag::note_omp_explicit_dsa)
3390 << getOpenMPClauseName(OMPC_aligned);
3391 continue;
3392 }
3393 AlignedArgs[CanonPVD] = E;
3394 QualType QTy = PVD->getType()
3395 .getNonReferenceType()
3396 .getUnqualifiedType()
3397 .getCanonicalType();
3398 const Type *Ty = QTy.getTypePtrOrNull();
3399 if (!Ty || (!Ty->isArrayType() && !Ty->isPointerType())) {
3400 Diag(E->getExprLoc(), diag::err_omp_aligned_expected_array_or_ptr)
3401 << QTy << getLangOpts().CPlusPlus << E->getSourceRange();
3402 Diag(PVD->getLocation(), diag::note_previous_decl) << PVD;
3403 }
3404 continue;
3405 }
3406 }
3407 if (isa<CXXThisExpr>(E)) {
3408 if (AlignedThis) {
3409 Diag(E->getExprLoc(), diag::err_omp_aligned_twice)
3410 << 2 << E->getSourceRange();
3411 Diag(AlignedThis->getExprLoc(), diag::note_omp_explicit_dsa)
3412 << getOpenMPClauseName(OMPC_aligned);
3413 }
3414 AlignedThis = E;
3415 continue;
3416 }
3417 Diag(E->getExprLoc(), diag::err_omp_param_or_this_in_clause)
3418 << FD->getDeclName() << (isa<CXXMethodDecl>(ADecl) ? 1 : 0);
3419 }
3420 // The optional parameter of the aligned clause, alignment, must be a constant
3421 // positive integer expression. If no optional parameter is specified,
3422 // implementation-defined default alignments for SIMD instructions on the
3423 // target platforms are assumed.
3424 SmallVector<Expr *, 4> NewAligns;
3425 for (auto *E : Alignments) {
3426 ExprResult Align;
3427 if (E)
3428 Align = VerifyPositiveIntegerConstantInClause(E, OMPC_aligned);
3429 NewAligns.push_back(Align.get());
3430 }
3431 // OpenMP [2.8.2, declare simd construct, Description]
3432 // The linear clause declares one or more list items to be private to a SIMD
3433 // lane and to have a linear relationship with respect to the iteration space
3434 // of a loop.
3435 // The special this pointer can be used as if was one of the arguments to the
3436 // function in any of the linear, aligned, or uniform clauses.
3437 // When a linear-step expression is specified in a linear clause it must be
3438 // either a constant integer expression or an integer-typed parameter that is
3439 // specified in a uniform clause on the directive.
3440 llvm::DenseMap<Decl *, Expr *> LinearArgs;
3441 const bool IsUniformedThis = UniformedLinearThis != nullptr;
3442 auto MI = LinModifiers.begin();
3443 for (auto *E : Linears) {
3444 auto LinKind = static_cast<OpenMPLinearClauseKind>(*MI);
3445 ++MI;
3446 E = E->IgnoreParenImpCasts();
3447 if (auto *DRE = dyn_cast<DeclRefExpr>(E))
3448 if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) {
3449 auto *CanonPVD = PVD->getCanonicalDecl();
3450 if (FD->getNumParams() > PVD->getFunctionScopeIndex() &&
3451 FD->getParamDecl(PVD->getFunctionScopeIndex())
3452 ->getCanonicalDecl() == CanonPVD) {
3453 // OpenMP [2.15.3.7, linear Clause, Restrictions]
3454 // A list-item cannot appear in more than one linear clause.
3455 if (LinearArgs.count(CanonPVD) > 0) {
3456 Diag(E->getExprLoc(), diag::err_omp_wrong_dsa)
3457 << getOpenMPClauseName(OMPC_linear)
3458 << getOpenMPClauseName(OMPC_linear) << E->getSourceRange();
3459 Diag(LinearArgs[CanonPVD]->getExprLoc(),
3460 diag::note_omp_explicit_dsa)
3461 << getOpenMPClauseName(OMPC_linear);
3462 continue;
3463 }
3464 // Each argument can appear in at most one uniform or linear clause.
3465 if (UniformedArgs.count(CanonPVD) > 0) {
3466 Diag(E->getExprLoc(), diag::err_omp_wrong_dsa)
3467 << getOpenMPClauseName(OMPC_linear)
3468 << getOpenMPClauseName(OMPC_uniform) << E->getSourceRange();
3469 Diag(UniformedArgs[CanonPVD]->getExprLoc(),
3470 diag::note_omp_explicit_dsa)
3471 << getOpenMPClauseName(OMPC_uniform);
3472 continue;
3473 }
3474 LinearArgs[CanonPVD] = E;
3475 if (E->isValueDependent() || E->isTypeDependent() ||
3476 E->isInstantiationDependent() ||
3477 E->containsUnexpandedParameterPack())
3478 continue;
3479 (void)CheckOpenMPLinearDecl(CanonPVD, E->getExprLoc(), LinKind,
3480 PVD->getOriginalType());
3481 continue;
3482 }
3483 }
3484 if (isa<CXXThisExpr>(E)) {
3485 if (UniformedLinearThis) {
3486 Diag(E->getExprLoc(), diag::err_omp_wrong_dsa)
3487 << getOpenMPClauseName(OMPC_linear)
3488 << getOpenMPClauseName(IsUniformedThis ? OMPC_uniform : OMPC_linear)
3489 << E->getSourceRange();
3490 Diag(UniformedLinearThis->getExprLoc(), diag::note_omp_explicit_dsa)
3491 << getOpenMPClauseName(IsUniformedThis ? OMPC_uniform
3492 : OMPC_linear);
3493 continue;
3494 }
3495 UniformedLinearThis = E;
3496 if (E->isValueDependent() || E->isTypeDependent() ||
3497 E->isInstantiationDependent() || E->containsUnexpandedParameterPack())
3498 continue;
3499 (void)CheckOpenMPLinearDecl(/*D=*/nullptr, E->getExprLoc(), LinKind,
3500 E->getType());
3501 continue;
3502 }
3503 Diag(E->getExprLoc(), diag::err_omp_param_or_this_in_clause)
3504 << FD->getDeclName() << (isa<CXXMethodDecl>(ADecl) ? 1 : 0);
3505 }
3506 Expr *Step = nullptr;
3507 Expr *NewStep = nullptr;
3508 SmallVector<Expr *, 4> NewSteps;
3509 for (auto *E : Steps) {
3510 // Skip the same step expression, it was checked already.
3511 if (Step == E || !E) {
3512 NewSteps.push_back(E ? NewStep : nullptr);
3513 continue;
3514 }
3515 Step = E;
3516 if (auto *DRE = dyn_cast<DeclRefExpr>(Step))
3517 if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) {
3518 auto *CanonPVD = PVD->getCanonicalDecl();
3519 if (UniformedArgs.count(CanonPVD) == 0) {
3520 Diag(Step->getExprLoc(), diag::err_omp_expected_uniform_param)
3521 << Step->getSourceRange();
3522 } else if (E->isValueDependent() || E->isTypeDependent() ||
3523 E->isInstantiationDependent() ||
3524 E->containsUnexpandedParameterPack() ||
3525 CanonPVD->getType()->hasIntegerRepresentation())
3526 NewSteps.push_back(Step);
3527 else {
3528 Diag(Step->getExprLoc(), diag::err_omp_expected_int_param)
3529 << Step->getSourceRange();
3530 }
3531 continue;
3532 }
3533 NewStep = Step;
3534 if (Step && !Step->isValueDependent() && !Step->isTypeDependent() &&
3535 !Step->isInstantiationDependent() &&
3536 !Step->containsUnexpandedParameterPack()) {
3537 NewStep = PerformOpenMPImplicitIntegerConversion(Step->getExprLoc(), Step)
3538 .get();
3539 if (NewStep)
3540 NewStep = VerifyIntegerConstantExpression(NewStep).get();
3541 }
3542 NewSteps.push_back(NewStep);
3543 }
3544 auto *NewAttr = OMPDeclareSimdDeclAttr::CreateImplicit(
3545 Context, BS, SL.get(), const_cast<Expr **>(Uniforms.data()),
3546 Uniforms.size(), const_cast<Expr **>(Aligneds.data()), Aligneds.size(),
3547 const_cast<Expr **>(NewAligns.data()), NewAligns.size(),
3548 const_cast<Expr **>(Linears.data()), Linears.size(),
3549 const_cast<unsigned *>(LinModifiers.data()), LinModifiers.size(),
3550 NewSteps.data(), NewSteps.size(), SR);
3551 ADecl->addAttr(NewAttr);
3552 return ConvertDeclToDeclGroup(ADecl);
3553}
3554
3555StmtResult Sema::ActOnOpenMPParallelDirective(ArrayRef<OMPClause *> Clauses,
3556 Stmt *AStmt,
3557 SourceLocation StartLoc,
3558 SourceLocation EndLoc) {
3559 if (!AStmt)
3560 return StmtError();
3561
3562 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
3563 // 1.2.2 OpenMP Language Terminology
3564 // Structured block - An executable statement with a single entry at the
3565 // top and a single exit at the bottom.
3566 // The point of exit cannot be a branch out of the structured block.
3567 // longjmp() and throw() must not violate the entry/exit criteria.
3568 CS->getCapturedDecl()->setNothrow();
3569
3570 getCurFunction()->setHasBranchProtectedScope();
3571
3572 return OMPParallelDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt,
3573 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
3574}
3575
3576namespace {
3577/// \brief Helper class for checking canonical form of the OpenMP loops and
3578/// extracting iteration space of each loop in the loop nest, that will be used
3579/// for IR generation.
3580class OpenMPIterationSpaceChecker {
3581 /// \brief Reference to Sema.
3582 Sema &SemaRef;
3583 /// \brief A location for diagnostics (when there is no some better location).
3584 SourceLocation DefaultLoc;
3585 /// \brief A location for diagnostics (when increment is not compatible).
3586 SourceLocation ConditionLoc;
3587 /// \brief A source location for referring to loop init later.
3588 SourceRange InitSrcRange;
3589 /// \brief A source location for referring to condition later.
3590 SourceRange ConditionSrcRange;
3591 /// \brief A source location for referring to increment later.
3592 SourceRange IncrementSrcRange;
3593 /// \brief Loop variable.
3594 ValueDecl *LCDecl = nullptr;
3595 /// \brief Reference to loop variable.
3596 Expr *LCRef = nullptr;
3597 /// \brief Lower bound (initializer for the var).
3598 Expr *LB = nullptr;
3599 /// \brief Upper bound.
3600 Expr *UB = nullptr;
3601 /// \brief Loop step (increment).
3602 Expr *Step = nullptr;
3603 /// \brief This flag is true when condition is one of:
3604 /// Var < UB
3605 /// Var <= UB
3606 /// UB > Var
3607 /// UB >= Var
3608 bool TestIsLessOp = false;
3609 /// \brief This flag is true when condition is strict ( < or > ).
3610 bool TestIsStrictOp = false;
3611 /// \brief This flag is true when step is subtracted on each iteration.
3612 bool SubtractStep = false;
3613
3614public:
3615 OpenMPIterationSpaceChecker(Sema &SemaRef, SourceLocation DefaultLoc)
3616 : SemaRef(SemaRef), DefaultLoc(DefaultLoc), ConditionLoc(DefaultLoc) {}
3617 /// \brief Check init-expr for canonical loop form and save loop counter
3618 /// variable - #Var and its initialization value - #LB.
3619 bool CheckInit(Stmt *S, bool EmitDiags = true);
3620 /// \brief Check test-expr for canonical form, save upper-bound (#UB), flags
3621 /// for less/greater and for strict/non-strict comparison.
3622 bool CheckCond(Expr *S);
3623 /// \brief Check incr-expr for canonical loop form and return true if it
3624 /// does not conform, otherwise save loop step (#Step).
3625 bool CheckInc(Expr *S);
3626 /// \brief Return the loop counter variable.
3627 ValueDecl *GetLoopDecl() const { return LCDecl; }
3628 /// \brief Return the reference expression to loop counter variable.
3629 Expr *GetLoopDeclRefExpr() const { return LCRef; }
3630 /// \brief Source range of the loop init.
3631 SourceRange GetInitSrcRange() const { return InitSrcRange; }
3632 /// \brief Source range of the loop condition.
3633 SourceRange GetConditionSrcRange() const { return ConditionSrcRange; }
3634 /// \brief Source range of the loop increment.
3635 SourceRange GetIncrementSrcRange() const { return IncrementSrcRange; }
3636 /// \brief True if the step should be subtracted.
3637 bool ShouldSubtractStep() const { return SubtractStep; }
3638 /// \brief Build the expression to calculate the number of iterations.
3639 Expr *
3640 BuildNumIterations(Scope *S, const bool LimitedType,
3641 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) const;
3642 /// \brief Build the precondition expression for the loops.
3643 Expr *BuildPreCond(Scope *S, Expr *Cond,
3644 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) const;
3645 /// \brief Build reference expression to the counter be used for codegen.
3646 DeclRefExpr *BuildCounterVar(llvm::MapVector<Expr *, DeclRefExpr *> &Captures,
3647 DSAStackTy &DSA) const;
3648 /// \brief Build reference expression to the private counter be used for
3649 /// codegen.
3650 Expr *BuildPrivateCounterVar() const;
3651 /// \brief Build initization of the counter be used for codegen.
3652 Expr *BuildCounterInit() const;
3653 /// \brief Build step of the counter be used for codegen.
3654 Expr *BuildCounterStep() const;
3655 /// \brief Return true if any expression is dependent.
3656 bool Dependent() const;
3657
3658private:
3659 /// \brief Check the right-hand side of an assignment in the increment
3660 /// expression.
3661 bool CheckIncRHS(Expr *RHS);
3662 /// \brief Helper to set loop counter variable and its initializer.
3663 bool SetLCDeclAndLB(ValueDecl *NewLCDecl, Expr *NewDeclRefExpr, Expr *NewLB);
3664 /// \brief Helper to set upper bound.
3665 bool SetUB(Expr *NewUB, bool LessOp, bool StrictOp, SourceRange SR,
3666 SourceLocation SL);
3667 /// \brief Helper to set loop increment.
3668 bool SetStep(Expr *NewStep, bool Subtract);
3669};
3670
3671bool OpenMPIterationSpaceChecker::Dependent() const {
3672 if (!LCDecl) {
3673 assert(!LB && !UB && !Step)((!LB && !UB && !Step) ? static_cast<void>
(0) : __assert_fail ("!LB && !UB && !Step", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3673, __PRETTY_FUNCTION__));
3674 return false;
3675 }
3676 return LCDecl->getType()->isDependentType() ||
3677 (LB && LB->isValueDependent()) || (UB && UB->isValueDependent()) ||
3678 (Step && Step->isValueDependent());
3679}
3680
3681static Expr *getExprAsWritten(Expr *E) {
3682 if (auto *ExprTemp = dyn_cast<ExprWithCleanups>(E))
3683 E = ExprTemp->getSubExpr();
3684
3685 if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E))
3686 E = MTE->GetTemporaryExpr();
3687
3688 while (auto *Binder = dyn_cast<CXXBindTemporaryExpr>(E))
3689 E = Binder->getSubExpr();
3690
3691 if (auto *ICE = dyn_cast<ImplicitCastExpr>(E))
3692 E = ICE->getSubExprAsWritten();
3693 return E->IgnoreParens();
3694}
3695
3696bool OpenMPIterationSpaceChecker::SetLCDeclAndLB(ValueDecl *NewLCDecl,
3697 Expr *NewLCRefExpr,
3698 Expr *NewLB) {
3699 // State consistency checking to ensure correct usage.
3700 assert(LCDecl == nullptr && LB == nullptr && LCRef == nullptr &&((LCDecl == nullptr && LB == nullptr && LCRef
== nullptr && UB == nullptr && Step == nullptr
&& !TestIsLessOp && !TestIsStrictOp) ? static_cast
<void> (0) : __assert_fail ("LCDecl == nullptr && LB == nullptr && LCRef == nullptr && UB == nullptr && Step == nullptr && !TestIsLessOp && !TestIsStrictOp"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3701, __PRETTY_FUNCTION__))
3701 UB == nullptr && Step == nullptr && !TestIsLessOp && !TestIsStrictOp)((LCDecl == nullptr && LB == nullptr && LCRef
== nullptr && UB == nullptr && Step == nullptr
&& !TestIsLessOp && !TestIsStrictOp) ? static_cast
<void> (0) : __assert_fail ("LCDecl == nullptr && LB == nullptr && LCRef == nullptr && UB == nullptr && Step == nullptr && !TestIsLessOp && !TestIsStrictOp"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3701, __PRETTY_FUNCTION__));
3702 if (!NewLCDecl || !NewLB)
3703 return true;
3704 LCDecl = getCanonicalDecl(NewLCDecl);
3705 LCRef = NewLCRefExpr;
3706 if (auto *CE = dyn_cast_or_null<CXXConstructExpr>(NewLB))
3707 if (const CXXConstructorDecl *Ctor = CE->getConstructor())
3708 if ((Ctor->isCopyOrMoveConstructor() ||
3709 Ctor->isConvertingConstructor(/*AllowExplicit=*/false)) &&
3710 CE->getNumArgs() > 0 && CE->getArg(0) != nullptr)
3711 NewLB = CE->getArg(0)->IgnoreParenImpCasts();
3712 LB = NewLB;
3713 return false;
3714}
3715
3716bool OpenMPIterationSpaceChecker::SetUB(Expr *NewUB, bool LessOp, bool StrictOp,
3717 SourceRange SR, SourceLocation SL) {
3718 // State consistency checking to ensure correct usage.
3719 assert(LCDecl != nullptr && LB != nullptr && UB == nullptr &&((LCDecl != nullptr && LB != nullptr && UB ==
nullptr && Step == nullptr && !TestIsLessOp &&
!TestIsStrictOp) ? static_cast<void> (0) : __assert_fail
("LCDecl != nullptr && LB != nullptr && UB == nullptr && Step == nullptr && !TestIsLessOp && !TestIsStrictOp"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3720, __PRETTY_FUNCTION__))
3720 Step == nullptr && !TestIsLessOp && !TestIsStrictOp)((LCDecl != nullptr && LB != nullptr && UB ==
nullptr && Step == nullptr && !TestIsLessOp &&
!TestIsStrictOp) ? static_cast<void> (0) : __assert_fail
("LCDecl != nullptr && LB != nullptr && UB == nullptr && Step == nullptr && !TestIsLessOp && !TestIsStrictOp"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3720, __PRETTY_FUNCTION__));
3721 if (!NewUB)
3722 return true;
3723 UB = NewUB;
3724 TestIsLessOp = LessOp;
3725 TestIsStrictOp = StrictOp;
3726 ConditionSrcRange = SR;
3727 ConditionLoc = SL;
3728 return false;
3729}
3730
3731bool OpenMPIterationSpaceChecker::SetStep(Expr *NewStep, bool Subtract) {
3732 // State consistency checking to ensure correct usage.
3733 assert(LCDecl != nullptr && LB != nullptr && Step == nullptr)((LCDecl != nullptr && LB != nullptr && Step ==
nullptr) ? static_cast<void> (0) : __assert_fail ("LCDecl != nullptr && LB != nullptr && Step == nullptr"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 3733, __PRETTY_FUNCTION__));
3734 if (!NewStep)
3735 return true;
3736 if (!NewStep->isValueDependent()) {
3737 // Check that the step is integer expression.
3738 SourceLocation StepLoc = NewStep->getLocStart();
3739 ExprResult Val =
3740 SemaRef.PerformOpenMPImplicitIntegerConversion(StepLoc, NewStep);
3741 if (Val.isInvalid())
3742 return true;
3743 NewStep = Val.get();
3744
3745 // OpenMP [2.6, Canonical Loop Form, Restrictions]
3746 // If test-expr is of form var relational-op b and relational-op is < or
3747 // <= then incr-expr must cause var to increase on each iteration of the
3748 // loop. If test-expr is of form var relational-op b and relational-op is
3749 // > or >= then incr-expr must cause var to decrease on each iteration of
3750 // the loop.
3751 // If test-expr is of form b relational-op var and relational-op is < or
3752 // <= then incr-expr must cause var to decrease on each iteration of the
3753 // loop. If test-expr is of form b relational-op var and relational-op is
3754 // > or >= then incr-expr must cause var to increase on each iteration of
3755 // the loop.
3756 llvm::APSInt Result;
3757 bool IsConstant = NewStep->isIntegerConstantExpr(Result, SemaRef.Context);
3758 bool IsUnsigned = !NewStep->getType()->hasSignedIntegerRepresentation();
3759 bool IsConstNeg =
3760 IsConstant && Result.isSigned() && (Subtract != Result.isNegative());
3761 bool IsConstPos =
3762 IsConstant && Result.isSigned() && (Subtract == Result.isNegative());
3763 bool IsConstZero = IsConstant && !Result.getBoolValue();
3764 if (UB && (IsConstZero ||
3765 (TestIsLessOp ? (IsConstNeg || (IsUnsigned && Subtract))
3766 : (IsConstPos || (IsUnsigned && !Subtract))))) {
3767 SemaRef.Diag(NewStep->getExprLoc(),
3768 diag::err_omp_loop_incr_not_compatible)
3769 << LCDecl << TestIsLessOp << NewStep->getSourceRange();
3770 SemaRef.Diag(ConditionLoc,
3771 diag::note_omp_loop_cond_requres_compatible_incr)
3772 << TestIsLessOp << ConditionSrcRange;
3773 return true;
3774 }
3775 if (TestIsLessOp == Subtract) {
3776 NewStep = SemaRef.CreateBuiltinUnaryOp(NewStep->getExprLoc(), UO_Minus,
3777 NewStep).get();
3778 Subtract = !Subtract;
3779 }
3780 }
3781
3782 Step = NewStep;
3783 SubtractStep = Subtract;
3784 return false;
3785}
3786
3787bool OpenMPIterationSpaceChecker::CheckInit(Stmt *S, bool EmitDiags) {
3788 // Check init-expr for canonical loop form and save loop counter
3789 // variable - #Var and its initialization value - #LB.
3790 // OpenMP [2.6] Canonical loop form. init-expr may be one of the following:
3791 // var = lb
3792 // integer-type var = lb
3793 // random-access-iterator-type var = lb
3794 // pointer-type var = lb
3795 //
3796 if (!S) {
3797 if (EmitDiags) {
3798 SemaRef.Diag(DefaultLoc, diag::err_omp_loop_not_canonical_init);
3799 }
3800 return true;
3801 }
3802 InitSrcRange = S->getSourceRange();
3803 if (Expr *E = dyn_cast<Expr>(S))
3804 S = E->IgnoreParens();
3805 if (auto BO = dyn_cast<BinaryOperator>(S)) {
3806 if (BO->getOpcode() == BO_Assign) {
3807 auto *LHS = BO->getLHS()->IgnoreParens();
3808 if (auto *DRE = dyn_cast<DeclRefExpr>(LHS)) {
3809 if (auto *CED = dyn_cast<OMPCapturedExprDecl>(DRE->getDecl()))
3810 if (auto *ME = dyn_cast<MemberExpr>(getExprAsWritten(CED->getInit())))
3811 return SetLCDeclAndLB(ME->getMemberDecl(), ME, BO->getRHS());
3812 return SetLCDeclAndLB(DRE->getDecl(), DRE, BO->getRHS());
3813 }
3814 if (auto *ME = dyn_cast<MemberExpr>(LHS)) {
3815 if (ME->isArrow() &&
3816 isa<CXXThisExpr>(ME->getBase()->IgnoreParenImpCasts()))
3817 return SetLCDeclAndLB(ME->getMemberDecl(), ME, BO->getRHS());
3818 }
3819 }
3820 } else if (auto DS = dyn_cast<DeclStmt>(S)) {
3821 if (DS->isSingleDecl()) {
3822 if (auto Var = dyn_cast_or_null<VarDecl>(DS->getSingleDecl())) {
3823 if (Var->hasInit() && !Var->getType()->isReferenceType()) {
3824 // Accept non-canonical init form here but emit ext. warning.
3825 if (Var->getInitStyle() != VarDecl::CInit && EmitDiags)
3826 SemaRef.Diag(S->getLocStart(),
3827 diag::ext_omp_loop_not_canonical_init)
3828 << S->getSourceRange();
3829 return SetLCDeclAndLB(Var, nullptr, Var->getInit());
3830 }
3831 }
3832 }
3833 } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(S)) {
3834 if (CE->getOperator() == OO_Equal) {
3835 auto *LHS = CE->getArg(0);
3836 if (auto DRE = dyn_cast<DeclRefExpr>(LHS)) {
3837 if (auto *CED = dyn_cast<OMPCapturedExprDecl>(DRE->getDecl()))
3838 if (auto *ME = dyn_cast<MemberExpr>(getExprAsWritten(CED->getInit())))
3839 return SetLCDeclAndLB(ME->getMemberDecl(), ME, BO->getRHS());
3840 return SetLCDeclAndLB(DRE->getDecl(), DRE, CE->getArg(1));
3841 }
3842 if (auto *ME = dyn_cast<MemberExpr>(LHS)) {
3843 if (ME->isArrow() &&
3844 isa<CXXThisExpr>(ME->getBase()->IgnoreParenImpCasts()))
3845 return SetLCDeclAndLB(ME->getMemberDecl(), ME, BO->getRHS());
3846 }
3847 }
3848 }
3849
3850 if (Dependent() || SemaRef.CurContext->isDependentContext())
3851 return false;
3852 if (EmitDiags) {
3853 SemaRef.Diag(S->getLocStart(), diag::err_omp_loop_not_canonical_init)
3854 << S->getSourceRange();
3855 }
3856 return true;
3857}
3858
3859/// \brief Ignore parenthesizes, implicit casts, copy constructor and return the
3860/// variable (which may be the loop variable) if possible.
3861static const ValueDecl *GetInitLCDecl(Expr *E) {
3862 if (!E)
3863 return nullptr;
3864 E = getExprAsWritten(E);
3865 if (auto *CE = dyn_cast_or_null<CXXConstructExpr>(E))
3866 if (const CXXConstructorDecl *Ctor = CE->getConstructor())
3867 if ((Ctor->isCopyOrMoveConstructor() ||
3868 Ctor->isConvertingConstructor(/*AllowExplicit=*/false)) &&
3869 CE->getNumArgs() > 0 && CE->getArg(0) != nullptr)
3870 E = CE->getArg(0)->IgnoreParenImpCasts();
3871 if (auto *DRE = dyn_cast_or_null<DeclRefExpr>(E)) {
3872 if (auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) {
3873 if (auto *CED = dyn_cast<OMPCapturedExprDecl>(VD))
3874 if (auto *ME = dyn_cast<MemberExpr>(getExprAsWritten(CED->getInit())))
3875 return getCanonicalDecl(ME->getMemberDecl());
3876 return getCanonicalDecl(VD);
3877 }
3878 }
3879 if (auto *ME = dyn_cast_or_null<MemberExpr>(E))
3880 if (ME->isArrow() && isa<CXXThisExpr>(ME->getBase()->IgnoreParenImpCasts()))
3881 return getCanonicalDecl(ME->getMemberDecl());
3882 return nullptr;
3883}
3884
3885bool OpenMPIterationSpaceChecker::CheckCond(Expr *S) {
3886 // Check test-expr for canonical form, save upper-bound UB, flags for
3887 // less/greater and for strict/non-strict comparison.
3888 // OpenMP [2.6] Canonical loop form. Test-expr may be one of the following:
3889 // var relational-op b
3890 // b relational-op var
3891 //
3892 if (!S) {
3893 SemaRef.Diag(DefaultLoc, diag::err_omp_loop_not_canonical_cond) << LCDecl;
3894 return true;
3895 }
3896 S = getExprAsWritten(S);
3897 SourceLocation CondLoc = S->getLocStart();
3898 if (auto BO = dyn_cast<BinaryOperator>(S)) {
3899 if (BO->isRelationalOp()) {
3900 if (GetInitLCDecl(BO->getLHS()) == LCDecl)
3901 return SetUB(BO->getRHS(),
3902 (BO->getOpcode() == BO_LT || BO->getOpcode() == BO_LE),
3903 (BO->getOpcode() == BO_LT || BO->getOpcode() == BO_GT),
3904 BO->getSourceRange(), BO->getOperatorLoc());
3905 if (GetInitLCDecl(BO->getRHS()) == LCDecl)
3906 return SetUB(BO->getLHS(),
3907 (BO->getOpcode() == BO_GT || BO->getOpcode() == BO_GE),
3908 (BO->getOpcode() == BO_LT || BO->getOpcode() == BO_GT),
3909 BO->getSourceRange(), BO->getOperatorLoc());
3910 }
3911 } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(S)) {
3912 if (CE->getNumArgs() == 2) {
3913 auto Op = CE->getOperator();
3914 switch (Op) {
3915 case OO_Greater:
3916 case OO_GreaterEqual:
3917 case OO_Less:
3918 case OO_LessEqual:
3919 if (GetInitLCDecl(CE->getArg(0)) == LCDecl)
3920 return SetUB(CE->getArg(1), Op == OO_Less || Op == OO_LessEqual,
3921 Op == OO_Less || Op == OO_Greater, CE->getSourceRange(),
3922 CE->getOperatorLoc());
3923 if (GetInitLCDecl(CE->getArg(1)) == LCDecl)
3924 return SetUB(CE->getArg(0), Op == OO_Greater || Op == OO_GreaterEqual,
3925 Op == OO_Less || Op == OO_Greater, CE->getSourceRange(),
3926 CE->getOperatorLoc());
3927 break;
3928 default:
3929 break;
3930 }
3931 }
3932 }
3933 if (Dependent() || SemaRef.CurContext->isDependentContext())
3934 return false;
3935 SemaRef.Diag(CondLoc, diag::err_omp_loop_not_canonical_cond)
3936 << S->getSourceRange() << LCDecl;
3937 return true;
3938}
3939
3940bool OpenMPIterationSpaceChecker::CheckIncRHS(Expr *RHS) {
3941 // RHS of canonical loop form increment can be:
3942 // var + incr
3943 // incr + var
3944 // var - incr
3945 //
3946 RHS = RHS->IgnoreParenImpCasts();
3947 if (auto BO = dyn_cast<BinaryOperator>(RHS)) {
3948 if (BO->isAdditiveOp()) {
3949 bool IsAdd = BO->getOpcode() == BO_Add;
3950 if (GetInitLCDecl(BO->getLHS()) == LCDecl)
3951 return SetStep(BO->getRHS(), !IsAdd);
3952 if (IsAdd && GetInitLCDecl(BO->getRHS()) == LCDecl)
3953 return SetStep(BO->getLHS(), false);
3954 }
3955 } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(RHS)) {
3956 bool IsAdd = CE->getOperator() == OO_Plus;
3957 if ((IsAdd || CE->getOperator() == OO_Minus) && CE->getNumArgs() == 2) {
3958 if (GetInitLCDecl(CE->getArg(0)) == LCDecl)
3959 return SetStep(CE->getArg(1), !IsAdd);
3960 if (IsAdd && GetInitLCDecl(CE->getArg(1)) == LCDecl)
3961 return SetStep(CE->getArg(0), false);
3962 }
3963 }
3964 if (Dependent() || SemaRef.CurContext->isDependentContext())
3965 return false;
3966 SemaRef.Diag(RHS->getLocStart(), diag::err_omp_loop_not_canonical_incr)
3967 << RHS->getSourceRange() << LCDecl;
3968 return true;
3969}
3970
3971bool OpenMPIterationSpaceChecker::CheckInc(Expr *S) {
3972 // Check incr-expr for canonical loop form and return true if it
3973 // does not conform.
3974 // OpenMP [2.6] Canonical loop form. Test-expr may be one of the following:
3975 // ++var
3976 // var++
3977 // --var
3978 // var--
3979 // var += incr
3980 // var -= incr
3981 // var = var + incr
3982 // var = incr + var
3983 // var = var - incr
3984 //
3985 if (!S) {
3986 SemaRef.Diag(DefaultLoc, diag::err_omp_loop_not_canonical_incr) << LCDecl;
3987 return true;
3988 }
3989 IncrementSrcRange = S->getSourceRange();
3990 S = S->IgnoreParens();
3991 if (auto UO = dyn_cast<UnaryOperator>(S)) {
3992 if (UO->isIncrementDecrementOp() &&
3993 GetInitLCDecl(UO->getSubExpr()) == LCDecl)
3994 return SetStep(
3995 SemaRef.ActOnIntegerConstant(UO->getLocStart(),
3996 (UO->isDecrementOp() ? -1 : 1)).get(),
3997 false);
3998 } else if (auto BO = dyn_cast<BinaryOperator>(S)) {
3999 switch (BO->getOpcode()) {
4000 case BO_AddAssign:
4001 case BO_SubAssign:
4002 if (GetInitLCDecl(BO->getLHS()) == LCDecl)
4003 return SetStep(BO->getRHS(), BO->getOpcode() == BO_SubAssign);
4004 break;
4005 case BO_Assign:
4006 if (GetInitLCDecl(BO->getLHS()) == LCDecl)
4007 return CheckIncRHS(BO->getRHS());
4008 break;
4009 default:
4010 break;
4011 }
4012 } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(S)) {
4013 switch (CE->getOperator()) {
4014 case OO_PlusPlus:
4015 case OO_MinusMinus:
4016 if (GetInitLCDecl(CE->getArg(0)) == LCDecl)
4017 return SetStep(
4018 SemaRef.ActOnIntegerConstant(
4019 CE->getLocStart(),
4020 ((CE->getOperator() == OO_MinusMinus) ? -1 : 1)).get(),
4021 false);
4022 break;
4023 case OO_PlusEqual:
4024 case OO_MinusEqual:
4025 if (GetInitLCDecl(CE->getArg(0)) == LCDecl)
4026 return SetStep(CE->getArg(1), CE->getOperator() == OO_MinusEqual);
4027 break;
4028 case OO_Equal:
4029 if (GetInitLCDecl(CE->getArg(0)) == LCDecl)
4030 return CheckIncRHS(CE->getArg(1));
4031 break;
4032 default:
4033 break;
4034 }
4035 }
4036 if (Dependent() || SemaRef.CurContext->isDependentContext())
4037 return false;
4038 SemaRef.Diag(S->getLocStart(), diag::err_omp_loop_not_canonical_incr)
4039 << S->getSourceRange() << LCDecl;
4040 return true;
4041}
4042
4043static ExprResult
4044tryBuildCapture(Sema &SemaRef, Expr *Capture,
4045 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) {
4046 if (Capture->isEvaluatable(SemaRef.Context, Expr::SE_AllowSideEffects))
4047 return SemaRef.PerformImplicitConversion(
4048 Capture->IgnoreImpCasts(), Capture->getType(), Sema::AA_Converting,
4049 /*AllowExplicit=*/true);
4050 auto I = Captures.find(Capture);
4051 if (I != Captures.end())
4052 return buildCapture(SemaRef, Capture, I->second);
4053 DeclRefExpr *Ref = nullptr;
4054 ExprResult Res = buildCapture(SemaRef, Capture, Ref);
4055 Captures[Capture] = Ref;
4056 return Res;
4057}
4058
4059/// \brief Build the expression to calculate the number of iterations.
4060Expr *OpenMPIterationSpaceChecker::BuildNumIterations(
4061 Scope *S, const bool LimitedType,
4062 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) const {
4063 ExprResult Diff;
4064 auto VarType = LCDecl->getType().getNonReferenceType();
4065 if (VarType->isIntegerType() || VarType->isPointerType() ||
4066 SemaRef.getLangOpts().CPlusPlus) {
4067 // Upper - Lower
4068 auto *UBExpr = TestIsLessOp ? UB : LB;
4069 auto *LBExpr = TestIsLessOp ? LB : UB;
4070 Expr *Upper = tryBuildCapture(SemaRef, UBExpr, Captures).get();
4071 Expr *Lower = tryBuildCapture(SemaRef, LBExpr, Captures).get();
4072 if (!Upper || !Lower)
4073 return nullptr;
4074
4075 Diff = SemaRef.BuildBinOp(S, DefaultLoc, BO_Sub, Upper, Lower);
4076
4077 if (!Diff.isUsable() && VarType->getAsCXXRecordDecl()) {
4078 // BuildBinOp already emitted error, this one is to point user to upper
4079 // and lower bound, and to tell what is passed to 'operator-'.
4080 SemaRef.Diag(Upper->getLocStart(), diag::err_omp_loop_diff_cxx)
4081 << Upper->getSourceRange() << Lower->getSourceRange();
4082 return nullptr;
4083 }
4084 }
4085
4086 if (!Diff.isUsable())
4087 return nullptr;
4088
4089 // Upper - Lower [- 1]
4090 if (TestIsStrictOp)
4091 Diff = SemaRef.BuildBinOp(
4092 S, DefaultLoc, BO_Sub, Diff.get(),
4093 SemaRef.ActOnIntegerConstant(SourceLocation(), 1).get());
4094 if (!Diff.isUsable())
4095 return nullptr;
4096
4097 // Upper - Lower [- 1] + Step
4098 auto NewStep = tryBuildCapture(SemaRef, Step, Captures);
4099 if (!NewStep.isUsable())
4100 return nullptr;
4101 Diff = SemaRef.BuildBinOp(S, DefaultLoc, BO_Add, Diff.get(), NewStep.get());
4102 if (!Diff.isUsable())
4103 return nullptr;
4104
4105 // Parentheses (for dumping/debugging purposes only).
4106 Diff = SemaRef.ActOnParenExpr(DefaultLoc, DefaultLoc, Diff.get());
4107 if (!Diff.isUsable())
4108 return nullptr;
4109
4110 // (Upper - Lower [- 1] + Step) / Step
4111 Diff = SemaRef.BuildBinOp(S, DefaultLoc, BO_Div, Diff.get(), NewStep.get());
4112 if (!Diff.isUsable())
4113 return nullptr;
4114
4115 // OpenMP runtime requires 32-bit or 64-bit loop variables.
4116 QualType Type = Diff.get()->getType();
4117 auto &C = SemaRef.Context;
4118 bool UseVarType = VarType->hasIntegerRepresentation() &&
4119 C.getTypeSize(Type) > C.getTypeSize(VarType);
4120 if (!Type->isIntegerType() || UseVarType) {
4121 unsigned NewSize =
4122 UseVarType ? C.getTypeSize(VarType) : C.getTypeSize(Type);
4123 bool IsSigned = UseVarType ? VarType->hasSignedIntegerRepresentation()
4124 : Type->hasSignedIntegerRepresentation();
4125 Type = C.getIntTypeForBitwidth(NewSize, IsSigned);
4126 if (!SemaRef.Context.hasSameType(Diff.get()->getType(), Type)) {
4127 Diff = SemaRef.PerformImplicitConversion(
4128 Diff.get(), Type, Sema::AA_Converting, /*AllowExplicit=*/true);
4129 if (!Diff.isUsable())
4130 return nullptr;
4131 }
4132 }
4133 if (LimitedType) {
4134 unsigned NewSize = (C.getTypeSize(Type) > 32) ? 64 : 32;
4135 if (NewSize != C.getTypeSize(Type)) {
4136 if (NewSize < C.getTypeSize(Type)) {
4137 assert(NewSize == 64 && "incorrect loop var size")((NewSize == 64 && "incorrect loop var size") ? static_cast
<void> (0) : __assert_fail ("NewSize == 64 && \"incorrect loop var size\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4137, __PRETTY_FUNCTION__));
4138 SemaRef.Diag(DefaultLoc, diag::warn_omp_loop_64_bit_var)
4139 << InitSrcRange << ConditionSrcRange;
4140 }
4141 QualType NewType = C.getIntTypeForBitwidth(
4142 NewSize, Type->hasSignedIntegerRepresentation() ||
4143 C.getTypeSize(Type) < NewSize);
4144 if (!SemaRef.Context.hasSameType(Diff.get()->getType(), NewType)) {
4145 Diff = SemaRef.PerformImplicitConversion(Diff.get(), NewType,
4146 Sema::AA_Converting, true);
4147 if (!Diff.isUsable())
4148 return nullptr;
4149 }
4150 }
4151 }
4152
4153 return Diff.get();
4154}
4155
4156Expr *OpenMPIterationSpaceChecker::BuildPreCond(
4157 Scope *S, Expr *Cond,
4158 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) const {
4159 // Try to build LB <op> UB, where <op> is <, >, <=, or >=.
4160 bool Suppress = SemaRef.getDiagnostics().getSuppressAllDiagnostics();
4161 SemaRef.getDiagnostics().setSuppressAllDiagnostics(/*Val=*/true);
4162
4163 auto NewLB = tryBuildCapture(SemaRef, LB, Captures);
4164 auto NewUB = tryBuildCapture(SemaRef, UB, Captures);
4165 if (!NewLB.isUsable() || !NewUB.isUsable())
4166 return nullptr;
4167
4168 auto CondExpr = SemaRef.BuildBinOp(
4169 S, DefaultLoc, TestIsLessOp ? (TestIsStrictOp ? BO_LT : BO_LE)
4170 : (TestIsStrictOp ? BO_GT : BO_GE),
4171 NewLB.get(), NewUB.get());
4172 if (CondExpr.isUsable()) {
4173 if (!SemaRef.Context.hasSameUnqualifiedType(CondExpr.get()->getType(),
4174 SemaRef.Context.BoolTy))
4175 CondExpr = SemaRef.PerformImplicitConversion(
4176 CondExpr.get(), SemaRef.Context.BoolTy, /*Action=*/Sema::AA_Casting,
4177 /*AllowExplicit=*/true);
4178 }
4179 SemaRef.getDiagnostics().setSuppressAllDiagnostics(Suppress);
4180 // Otherwise use original loop conditon and evaluate it in runtime.
4181 return CondExpr.isUsable() ? CondExpr.get() : Cond;
4182}
4183
4184/// \brief Build reference expression to the counter be used for codegen.
4185DeclRefExpr *OpenMPIterationSpaceChecker::BuildCounterVar(
4186 llvm::MapVector<Expr *, DeclRefExpr *> &Captures, DSAStackTy &DSA) const {
4187 auto *VD = dyn_cast<VarDecl>(LCDecl);
4188 if (!VD) {
4189 VD = SemaRef.IsOpenMPCapturedDecl(LCDecl);
4190 auto *Ref = buildDeclRefExpr(
4191 SemaRef, VD, VD->getType().getNonReferenceType(), DefaultLoc);
4192 DSAStackTy::DSAVarData Data = DSA.getTopDSA(LCDecl, /*FromParent=*/false);
4193 // If the loop control decl is explicitly marked as private, do not mark it
4194 // as captured again.
4195 if (!isOpenMPPrivate(Data.CKind) || !Data.RefExpr)
4196 Captures.insert(std::make_pair(LCRef, Ref));
4197 return Ref;
4198 }
4199 return buildDeclRefExpr(SemaRef, VD, VD->getType().getNonReferenceType(),
4200 DefaultLoc);
4201}
4202
4203Expr *OpenMPIterationSpaceChecker::BuildPrivateCounterVar() const {
4204 if (LCDecl && !LCDecl->isInvalidDecl()) {
4205 auto Type = LCDecl->getType().getNonReferenceType();
4206 auto *PrivateVar =
4207 buildVarDecl(SemaRef, DefaultLoc, Type, LCDecl->getName(),
4208 LCDecl->hasAttrs() ? &LCDecl->getAttrs() : nullptr);
4209 if (PrivateVar->isInvalidDecl())
4210 return nullptr;
4211 return buildDeclRefExpr(SemaRef, PrivateVar, Type, DefaultLoc);
4212 }
4213 return nullptr;
4214}
4215
4216/// \brief Build initization of the counter be used for codegen.
4217Expr *OpenMPIterationSpaceChecker::BuildCounterInit() const { return LB; }
4218
4219/// \brief Build step of the counter be used for codegen.
4220Expr *OpenMPIterationSpaceChecker::BuildCounterStep() const { return Step; }
4221
4222/// \brief Iteration space of a single for loop.
4223struct LoopIterationSpace final {
4224 /// \brief Condition of the loop.
4225 Expr *PreCond = nullptr;
4226 /// \brief This expression calculates the number of iterations in the loop.
4227 /// It is always possible to calculate it before starting the loop.
4228 Expr *NumIterations = nullptr;
4229 /// \brief The loop counter variable.
4230 Expr *CounterVar = nullptr;
4231 /// \brief Private loop counter variable.
4232 Expr *PrivateCounterVar = nullptr;
4233 /// \brief This is initializer for the initial value of #CounterVar.
4234 Expr *CounterInit = nullptr;
4235 /// \brief This is step for the #CounterVar used to generate its update:
4236 /// #CounterVar = #CounterInit + #CounterStep * CurrentIteration.
4237 Expr *CounterStep = nullptr;
4238 /// \brief Should step be subtracted?
4239 bool Subtract = false;
4240 /// \brief Source range of the loop init.
4241 SourceRange InitSrcRange;
4242 /// \brief Source range of the loop condition.
4243 SourceRange CondSrcRange;
4244 /// \brief Source range of the loop increment.
4245 SourceRange IncSrcRange;
4246};
4247
4248} // namespace
4249
4250void Sema::ActOnOpenMPLoopInitialization(SourceLocation ForLoc, Stmt *Init) {
4251 assert(getLangOpts().OpenMP && "OpenMP is not active.")((getLangOpts().OpenMP && "OpenMP is not active.") ? static_cast
<void> (0) : __assert_fail ("getLangOpts().OpenMP && \"OpenMP is not active.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4251, __PRETTY_FUNCTION__));
4252 assert(Init && "Expected loop in canonical form.")((Init && "Expected loop in canonical form.") ? static_cast
<void> (0) : __assert_fail ("Init && \"Expected loop in canonical form.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4252, __PRETTY_FUNCTION__));
4253 unsigned AssociatedLoops = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getAssociatedLoops();
4254 if (AssociatedLoops > 0 &&
4255 isOpenMPLoopDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) {
4256 OpenMPIterationSpaceChecker ISC(*this, ForLoc);
4257 if (!ISC.CheckInit(Init, /*EmitDiags=*/false)) {
4258 if (auto *D = ISC.GetLoopDecl()) {
4259 auto *VD = dyn_cast<VarDecl>(D);
4260 if (!VD) {
4261 if (auto *Private = IsOpenMPCapturedDecl(D))
4262 VD = Private;
4263 else {
4264 auto *Ref = buildCapture(*this, D, ISC.GetLoopDeclRefExpr(),
4265 /*WithInit=*/false);
4266 VD = cast<VarDecl>(Ref->getDecl());
4267 }
4268 }
4269 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addLoopControlVariable(D, VD);
4270 }
4271 }
4272 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setAssociatedLoops(AssociatedLoops - 1);
4273 }
4274}
4275
4276/// \brief Called on a for stmt to check and extract its iteration space
4277/// for further processing (such as collapsing).
4278static bool CheckOpenMPIterationSpace(
4279 OpenMPDirectiveKind DKind, Stmt *S, Sema &SemaRef, DSAStackTy &DSA,
4280 unsigned CurrentNestedLoopCount, unsigned NestedLoopCount,
4281 Expr *CollapseLoopCountExpr, Expr *OrderedLoopCountExpr,
4282 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA,
4283 LoopIterationSpace &ResultIterSpace,
4284 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) {
4285 // OpenMP [2.6, Canonical Loop Form]
4286 // for (init-expr; test-expr; incr-expr) structured-block
4287 auto For = dyn_cast_or_null<ForStmt>(S);
4288 if (!For) {
4289 SemaRef.Diag(S->getLocStart(), diag::err_omp_not_for)
4290 << (CollapseLoopCountExpr != nullptr || OrderedLoopCountExpr != nullptr)
4291 << getOpenMPDirectiveName(DKind) << NestedLoopCount
4292 << (CurrentNestedLoopCount > 0) << CurrentNestedLoopCount;
4293 if (NestedLoopCount > 1) {
4294 if (CollapseLoopCountExpr && OrderedLoopCountExpr)
4295 SemaRef.Diag(DSA.getConstructLoc(),
4296 diag::note_omp_collapse_ordered_expr)
4297 << 2 << CollapseLoopCountExpr->getSourceRange()
4298 << OrderedLoopCountExpr->getSourceRange();
4299 else if (CollapseLoopCountExpr)
4300 SemaRef.Diag(CollapseLoopCountExpr->getExprLoc(),
4301 diag::note_omp_collapse_ordered_expr)
4302 << 0 << CollapseLoopCountExpr->getSourceRange();
4303 else
4304 SemaRef.Diag(OrderedLoopCountExpr->getExprLoc(),
4305 diag::note_omp_collapse_ordered_expr)
4306 << 1 << OrderedLoopCountExpr->getSourceRange();
4307 }
4308 return true;
4309 }
4310 assert(For->getBody())((For->getBody()) ? static_cast<void> (0) : __assert_fail
("For->getBody()", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4310, __PRETTY_FUNCTION__));
4311
4312 OpenMPIterationSpaceChecker ISC(SemaRef, For->getForLoc());
4313
4314 // Check init.
4315 auto Init = For->getInit();
4316 if (ISC.CheckInit(Init))
4317 return true;
4318
4319 bool HasErrors = false;
4320
4321 // Check loop variable's type.
4322 if (auto *LCDecl = ISC.GetLoopDecl()) {
4323 auto *LoopDeclRefExpr = ISC.GetLoopDeclRefExpr();
4324
4325 // OpenMP [2.6, Canonical Loop Form]
4326 // Var is one of the following:
4327 // A variable of signed or unsigned integer type.
4328 // For C++, a variable of a random access iterator type.
4329 // For C, a variable of a pointer type.
4330 auto VarType = LCDecl->getType().getNonReferenceType();
4331 if (!VarType->isDependentType() && !VarType->isIntegerType() &&
4332 !VarType->isPointerType() &&
4333 !(SemaRef.getLangOpts().CPlusPlus && VarType->isOverloadableType())) {
4334 SemaRef.Diag(Init->getLocStart(), diag::err_omp_loop_variable_type)
4335 << SemaRef.getLangOpts().CPlusPlus;
4336 HasErrors = true;
4337 }
4338
4339 // OpenMP, 2.14.1.1 Data-sharing Attribute Rules for Variables Referenced in
4340 // a Construct
4341 // The loop iteration variable(s) in the associated for-loop(s) of a for or
4342 // parallel for construct is (are) private.
4343 // The loop iteration variable in the associated for-loop of a simd
4344 // construct with just one associated for-loop is linear with a
4345 // constant-linear-step that is the increment of the associated for-loop.
4346 // Exclude loop var from the list of variables with implicitly defined data
4347 // sharing attributes.
4348 VarsWithImplicitDSA.erase(LCDecl);
4349
4350 // OpenMP [2.14.1.1, Data-sharing Attribute Rules for Variables Referenced
4351 // in a Construct, C/C++].
4352 // The loop iteration variable in the associated for-loop of a simd
4353 // construct with just one associated for-loop may be listed in a linear
4354 // clause with a constant-linear-step that is the increment of the
4355 // associated for-loop.
4356 // The loop iteration variable(s) in the associated for-loop(s) of a for or
4357 // parallel for construct may be listed in a private or lastprivate clause.
4358 DSAStackTy::DSAVarData DVar = DSA.getTopDSA(LCDecl, false);
4359 // If LoopVarRefExpr is nullptr it means the corresponding loop variable is
4360 // declared in the loop and it is predetermined as a private.
4361 auto PredeterminedCKind =
4362 isOpenMPSimdDirective(DKind)
4363 ? ((NestedLoopCount == 1) ? OMPC_linear : OMPC_lastprivate)
4364 : OMPC_private;
4365 if (((isOpenMPSimdDirective(DKind) && DVar.CKind != OMPC_unknown &&
4366 DVar.CKind != PredeterminedCKind) ||
4367 ((isOpenMPWorksharingDirective(DKind) || DKind == OMPD_taskloop ||
4368 isOpenMPDistributeDirective(DKind)) &&
4369 !isOpenMPSimdDirective(DKind) && DVar.CKind != OMPC_unknown &&
4370 DVar.CKind != OMPC_private && DVar.CKind != OMPC_lastprivate)) &&
4371 (DVar.CKind != OMPC_private || DVar.RefExpr != nullptr)) {
4372 SemaRef.Diag(Init->getLocStart(), diag::err_omp_loop_var_dsa)
4373 << getOpenMPClauseName(DVar.CKind) << getOpenMPDirectiveName(DKind)
4374 << getOpenMPClauseName(PredeterminedCKind);
4375 if (DVar.RefExpr == nullptr)
4376 DVar.CKind = PredeterminedCKind;
4377 ReportOriginalDSA(SemaRef, &DSA, LCDecl, DVar, /*IsLoopIterVar=*/true);
4378 HasErrors = true;
4379 } else if (LoopDeclRefExpr != nullptr) {
4380 // Make the loop iteration variable private (for worksharing constructs),
4381 // linear (for simd directives with the only one associated loop) or
4382 // lastprivate (for simd directives with several collapsed or ordered
4383 // loops).
4384 if (DVar.CKind == OMPC_unknown)
4385 DVar = DSA.hasDSA(LCDecl, isOpenMPPrivate,
4386 [](OpenMPDirectiveKind) -> bool { return true; },
4387 /*FromParent=*/false);
4388 DSA.addDSA(LCDecl, LoopDeclRefExpr, PredeterminedCKind);
4389 }
4390
4391 assert(isOpenMPLoopDirective(DKind) && "DSA for non-loop vars")((isOpenMPLoopDirective(DKind) && "DSA for non-loop vars"
) ? static_cast<void> (0) : __assert_fail ("isOpenMPLoopDirective(DKind) && \"DSA for non-loop vars\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4391, __PRETTY_FUNCTION__));
4392
4393 // Check test-expr.
4394 HasErrors |= ISC.CheckCond(For->getCond());
4395
4396 // Check incr-expr.
4397 HasErrors |= ISC.CheckInc(For->getInc());
4398 }
4399
4400 if (ISC.Dependent() || SemaRef.CurContext->isDependentContext() || HasErrors)
4401 return HasErrors;
4402
4403 // Build the loop's iteration space representation.
4404 ResultIterSpace.PreCond =
4405 ISC.BuildPreCond(DSA.getCurScope(), For->getCond(), Captures);
4406 ResultIterSpace.NumIterations = ISC.BuildNumIterations(
4407 DSA.getCurScope(),
4408 (isOpenMPWorksharingDirective(DKind) ||
4409 isOpenMPTaskLoopDirective(DKind) || isOpenMPDistributeDirective(DKind)),
4410 Captures);
4411 ResultIterSpace.CounterVar = ISC.BuildCounterVar(Captures, DSA);
4412 ResultIterSpace.PrivateCounterVar = ISC.BuildPrivateCounterVar();
4413 ResultIterSpace.CounterInit = ISC.BuildCounterInit();
4414 ResultIterSpace.CounterStep = ISC.BuildCounterStep();
4415 ResultIterSpace.InitSrcRange = ISC.GetInitSrcRange();
4416 ResultIterSpace.CondSrcRange = ISC.GetConditionSrcRange();
4417 ResultIterSpace.IncSrcRange = ISC.GetIncrementSrcRange();
4418 ResultIterSpace.Subtract = ISC.ShouldSubtractStep();
4419
4420 HasErrors |= (ResultIterSpace.PreCond == nullptr ||
4421 ResultIterSpace.NumIterations == nullptr ||
4422 ResultIterSpace.CounterVar == nullptr ||
4423 ResultIterSpace.PrivateCounterVar == nullptr ||
4424 ResultIterSpace.CounterInit == nullptr ||
4425 ResultIterSpace.CounterStep == nullptr);
4426
4427 return HasErrors;
4428}
4429
4430/// \brief Build 'VarRef = Start.
4431static ExprResult
4432BuildCounterInit(Sema &SemaRef, Scope *S, SourceLocation Loc, ExprResult VarRef,
4433 ExprResult Start,
4434 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) {
4435 // Build 'VarRef = Start.
4436 auto NewStart = tryBuildCapture(SemaRef, Start.get(), Captures);
4437 if (!NewStart.isUsable())
4438 return ExprError();
4439 if (!SemaRef.Context.hasSameType(NewStart.get()->getType(),
4440 VarRef.get()->getType())) {
4441 NewStart = SemaRef.PerformImplicitConversion(
4442 NewStart.get(), VarRef.get()->getType(), Sema::AA_Converting,
4443 /*AllowExplicit=*/true);
4444 if (!NewStart.isUsable())
4445 return ExprError();
4446 }
4447
4448 auto Init =
4449 SemaRef.BuildBinOp(S, Loc, BO_Assign, VarRef.get(), NewStart.get());
4450 return Init;
4451}
4452
4453/// \brief Build 'VarRef = Start + Iter * Step'.
4454static ExprResult
4455BuildCounterUpdate(Sema &SemaRef, Scope *S, SourceLocation Loc,
4456 ExprResult VarRef, ExprResult Start, ExprResult Iter,
4457 ExprResult Step, bool Subtract,
4458 llvm::MapVector<Expr *, DeclRefExpr *> *Captures = nullptr) {
4459 // Add parentheses (for debugging purposes only).
4460 Iter = SemaRef.ActOnParenExpr(Loc, Loc, Iter.get());
4461 if (!VarRef.isUsable() || !Start.isUsable() || !Iter.isUsable() ||
4462 !Step.isUsable())
4463 return ExprError();
4464
4465 ExprResult NewStep = Step;
4466 if (Captures)
4467 NewStep = tryBuildCapture(SemaRef, Step.get(), *Captures);
4468 if (NewStep.isInvalid())
4469 return ExprError();
4470 ExprResult Update =
4471 SemaRef.BuildBinOp(S, Loc, BO_Mul, Iter.get(), NewStep.get());
4472 if (!Update.isUsable())
4473 return ExprError();
4474
4475 // Try to build 'VarRef = Start, VarRef (+|-)= Iter * Step' or
4476 // 'VarRef = Start (+|-) Iter * Step'.
4477 ExprResult NewStart = Start;
4478 if (Captures)
4479 NewStart = tryBuildCapture(SemaRef, Start.get(), *Captures);
4480 if (NewStart.isInvalid())
4481 return ExprError();
4482
4483 // First attempt: try to build 'VarRef = Start, VarRef += Iter * Step'.
4484 ExprResult SavedUpdate = Update;
4485 ExprResult UpdateVal;
4486 if (VarRef.get()->getType()->isOverloadableType() ||
4487 NewStart.get()->getType()->isOverloadableType() ||
4488 Update.get()->getType()->isOverloadableType()) {
4489 bool Suppress = SemaRef.getDiagnostics().getSuppressAllDiagnostics();
4490 SemaRef.getDiagnostics().setSuppressAllDiagnostics(/*Val=*/true);
4491 Update =
4492 SemaRef.BuildBinOp(S, Loc, BO_Assign, VarRef.get(), NewStart.get());
4493 if (Update.isUsable()) {
4494 UpdateVal =
4495 SemaRef.BuildBinOp(S, Loc, Subtract ? BO_SubAssign : BO_AddAssign,
4496 VarRef.get(), SavedUpdate.get());
4497 if (UpdateVal.isUsable()) {
4498 Update = SemaRef.CreateBuiltinBinOp(Loc, BO_Comma, Update.get(),
4499 UpdateVal.get());
4500 }
4501 }
4502 SemaRef.getDiagnostics().setSuppressAllDiagnostics(Suppress);
4503 }
4504
4505 // Second attempt: try to build 'VarRef = Start (+|-) Iter * Step'.
4506 if (!Update.isUsable() || !UpdateVal.isUsable()) {
4507 Update = SemaRef.BuildBinOp(S, Loc, Subtract ? BO_Sub : BO_Add,
4508 NewStart.get(), SavedUpdate.get());
4509 if (!Update.isUsable())
4510 return ExprError();
4511
4512 if (!SemaRef.Context.hasSameType(Update.get()->getType(),
4513 VarRef.get()->getType())) {
4514 Update = SemaRef.PerformImplicitConversion(
4515 Update.get(), VarRef.get()->getType(), Sema::AA_Converting, true);
4516 if (!Update.isUsable())
4517 return ExprError();
4518 }
4519
4520 Update = SemaRef.BuildBinOp(S, Loc, BO_Assign, VarRef.get(), Update.get());
4521 }
4522 return Update;
4523}
4524
4525/// \brief Convert integer expression \a E to make it have at least \a Bits
4526/// bits.
4527static ExprResult WidenIterationCount(unsigned Bits, Expr *E,
4528 Sema &SemaRef) {
4529 if (E == nullptr)
4530 return ExprError();
4531 auto &C = SemaRef.Context;
4532 QualType OldType = E->getType();
4533 unsigned HasBits = C.getTypeSize(OldType);
4534 if (HasBits >= Bits)
4535 return ExprResult(E);
4536 // OK to convert to signed, because new type has more bits than old.
4537 QualType NewType = C.getIntTypeForBitwidth(Bits, /* Signed */ true);
4538 return SemaRef.PerformImplicitConversion(E, NewType, Sema::AA_Converting,
4539 true);
4540}
4541
4542/// \brief Check if the given expression \a E is a constant integer that fits
4543/// into \a Bits bits.
4544static bool FitsInto(unsigned Bits, bool Signed, Expr *E, Sema &SemaRef) {
4545 if (E == nullptr)
4546 return false;
4547 llvm::APSInt Result;
4548 if (E->isIntegerConstantExpr(Result, SemaRef.Context))
4549 return Signed ? Result.isSignedIntN(Bits) : Result.isIntN(Bits);
4550 return false;
4551}
4552
4553/// Build preinits statement for the given declarations.
4554static Stmt *buildPreInits(ASTContext &Context,
4555 SmallVectorImpl<Decl *> &PreInits) {
4556 if (!PreInits.empty()) {
4557 return new (Context) DeclStmt(
4558 DeclGroupRef::Create(Context, PreInits.begin(), PreInits.size()),
4559 SourceLocation(), SourceLocation());
4560 }
4561 return nullptr;
4562}
4563
4564/// Build preinits statement for the given declarations.
4565static Stmt *buildPreInits(ASTContext &Context,
4566 llvm::MapVector<Expr *, DeclRefExpr *> &Captures) {
4567 if (!Captures.empty()) {
4568 SmallVector<Decl *, 16> PreInits;
4569 for (auto &Pair : Captures)
4570 PreInits.push_back(Pair.second->getDecl());
4571 return buildPreInits(Context, PreInits);
4572 }
4573 return nullptr;
4574}
4575
4576/// Build postupdate expression for the given list of postupdates expressions.
4577static Expr *buildPostUpdate(Sema &S, ArrayRef<Expr *> PostUpdates) {
4578 Expr *PostUpdate = nullptr;
4579 if (!PostUpdates.empty()) {
4580 for (auto *E : PostUpdates) {
4581 Expr *ConvE = S.BuildCStyleCastExpr(
4582 E->getExprLoc(),
4583 S.Context.getTrivialTypeSourceInfo(S.Context.VoidTy),
4584 E->getExprLoc(), E)
4585 .get();
4586 PostUpdate = PostUpdate
4587 ? S.CreateBuiltinBinOp(ConvE->getExprLoc(), BO_Comma,
4588 PostUpdate, ConvE)
4589 .get()
4590 : ConvE;
4591 }
4592 }
4593 return PostUpdate;
4594}
4595
4596/// \brief Called on a for stmt to check itself and nested loops (if any).
4597/// \return Returns 0 if one of the collapsed stmts is not canonical for loop,
4598/// number of collapsed loops otherwise.
4599static unsigned
4600CheckOpenMPLoop(OpenMPDirectiveKind DKind, Expr *CollapseLoopCountExpr,
4601 Expr *OrderedLoopCountExpr, Stmt *AStmt, Sema &SemaRef,
4602 DSAStackTy &DSA,
4603 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA,
4604 OMPLoopDirective::HelperExprs &Built) {
4605 unsigned NestedLoopCount = 1;
4606 if (CollapseLoopCountExpr) {
4607 // Found 'collapse' clause - calculate collapse number.
4608 llvm::APSInt Result;
4609 if (CollapseLoopCountExpr->EvaluateAsInt(Result, SemaRef.getASTContext()))
4610 NestedLoopCount = Result.getLimitedValue();
4611 }
4612 if (OrderedLoopCountExpr) {
4613 // Found 'ordered' clause - calculate collapse number.
4614 llvm::APSInt Result;
4615 if (OrderedLoopCountExpr->EvaluateAsInt(Result, SemaRef.getASTContext())) {
4616 if (Result.getLimitedValue() < NestedLoopCount) {
4617 SemaRef.Diag(OrderedLoopCountExpr->getExprLoc(),
4618 diag::err_omp_wrong_ordered_loop_count)
4619 << OrderedLoopCountExpr->getSourceRange();
4620 SemaRef.Diag(CollapseLoopCountExpr->getExprLoc(),
4621 diag::note_collapse_loop_count)
4622 << CollapseLoopCountExpr->getSourceRange();
4623 }
4624 NestedLoopCount = Result.getLimitedValue();
4625 }
4626 }
4627 // This is helper routine for loop directives (e.g., 'for', 'simd',
4628 // 'for simd', etc.).
4629 llvm::MapVector<Expr *, DeclRefExpr *> Captures;
4630 SmallVector<LoopIterationSpace, 4> IterSpaces;
4631 IterSpaces.resize(NestedLoopCount);
4632 Stmt *CurStmt = AStmt->IgnoreContainers(/* IgnoreCaptured */ true);
4633 for (unsigned Cnt = 0; Cnt < NestedLoopCount; ++Cnt) {
4634 if (CheckOpenMPIterationSpace(DKind, CurStmt, SemaRef, DSA, Cnt,
4635 NestedLoopCount, CollapseLoopCountExpr,
4636 OrderedLoopCountExpr, VarsWithImplicitDSA,
4637 IterSpaces[Cnt], Captures))
4638 return 0;
4639 // Move on to the next nested for loop, or to the loop body.
4640 // OpenMP [2.8.1, simd construct, Restrictions]
4641 // All loops associated with the construct must be perfectly nested; that
4642 // is, there must be no intervening code nor any OpenMP directive between
4643 // any two loops.
4644 CurStmt = cast<ForStmt>(CurStmt)->getBody()->IgnoreContainers();
4645 }
4646
4647 Built.clear(/* size */ NestedLoopCount);
4648
4649 if (SemaRef.CurContext->isDependentContext())
4650 return NestedLoopCount;
4651
4652 // An example of what is generated for the following code:
4653 //
4654 // #pragma omp simd collapse(2) ordered(2)
4655 // for (i = 0; i < NI; ++i)
4656 // for (k = 0; k < NK; ++k)
4657 // for (j = J0; j < NJ; j+=2) {
4658 // <loop body>
4659 // }
4660 //
4661 // We generate the code below.
4662 // Note: the loop body may be outlined in CodeGen.
4663 // Note: some counters may be C++ classes, operator- is used to find number of
4664 // iterations and operator+= to calculate counter value.
4665 // Note: decltype(NumIterations) must be integer type (in 'omp for', only i32
4666 // or i64 is currently supported).
4667 //
4668 // #define NumIterations (NI * ((NJ - J0 - 1 + 2) / 2))
4669 // for (int[32|64]_t IV = 0; IV < NumIterations; ++IV ) {
4670 // .local.i = IV / ((NJ - J0 - 1 + 2) / 2);
4671 // .local.j = J0 + (IV % ((NJ - J0 - 1 + 2) / 2)) * 2;
4672 // // similar updates for vars in clauses (e.g. 'linear')
4673 // <loop body (using local i and j)>
4674 // }
4675 // i = NI; // assign final values of counters
4676 // j = NJ;
4677 //
4678
4679 // Last iteration number is (I1 * I2 * ... In) - 1, where I1, I2 ... In are
4680 // the iteration counts of the collapsed for loops.
4681 // Precondition tests if there is at least one iteration (all conditions are
4682 // true).
4683 auto PreCond = ExprResult(IterSpaces[0].PreCond);
4684 auto N0 = IterSpaces[0].NumIterations;
4685 ExprResult LastIteration32 = WidenIterationCount(
4686 32 /* Bits */, SemaRef.PerformImplicitConversion(
4687 N0->IgnoreImpCasts(), N0->getType(),
4688 Sema::AA_Converting, /*AllowExplicit=*/true)
4689 .get(),
4690 SemaRef);
4691 ExprResult LastIteration64 = WidenIterationCount(
4692 64 /* Bits */, SemaRef.PerformImplicitConversion(
4693 N0->IgnoreImpCasts(), N0->getType(),
4694 Sema::AA_Converting, /*AllowExplicit=*/true)
4695 .get(),
4696 SemaRef);
4697
4698 if (!LastIteration32.isUsable() || !LastIteration64.isUsable())
4699 return NestedLoopCount;
4700
4701 auto &C = SemaRef.Context;
4702 bool AllCountsNeedLessThan32Bits = C.getTypeSize(N0->getType()) < 32;
4703
4704 Scope *CurScope = DSA.getCurScope();
4705 for (unsigned Cnt = 1; Cnt < NestedLoopCount; ++Cnt) {
4706 if (PreCond.isUsable()) {
4707 PreCond = SemaRef.BuildBinOp(CurScope, SourceLocation(), BO_LAnd,
4708 PreCond.get(), IterSpaces[Cnt].PreCond);
4709 }
4710 auto N = IterSpaces[Cnt].NumIterations;
4711 AllCountsNeedLessThan32Bits &= C.getTypeSize(N->getType()) < 32;
4712 if (LastIteration32.isUsable())
4713 LastIteration32 = SemaRef.BuildBinOp(
4714 CurScope, SourceLocation(), BO_Mul, LastIteration32.get(),
4715 SemaRef.PerformImplicitConversion(N->IgnoreImpCasts(), N->getType(),
4716 Sema::AA_Converting,
4717 /*AllowExplicit=*/true)
4718 .get());
4719 if (LastIteration64.isUsable())
4720 LastIteration64 = SemaRef.BuildBinOp(
4721 CurScope, SourceLocation(), BO_Mul, LastIteration64.get(),
4722 SemaRef.PerformImplicitConversion(N->IgnoreImpCasts(), N->getType(),
4723 Sema::AA_Converting,
4724 /*AllowExplicit=*/true)
4725 .get());
4726 }
4727
4728 // Choose either the 32-bit or 64-bit version.
4729 ExprResult LastIteration = LastIteration64;
4730 if (LastIteration32.isUsable() &&
4731 C.getTypeSize(LastIteration32.get()->getType()) == 32 &&
4732 (AllCountsNeedLessThan32Bits || NestedLoopCount == 1 ||
4733 FitsInto(
4734 32 /* Bits */,
4735 LastIteration32.get()->getType()->hasSignedIntegerRepresentation(),
4736 LastIteration64.get(), SemaRef)))
4737 LastIteration = LastIteration32;
4738 QualType VType = LastIteration.get()->getType();
4739 QualType RealVType = VType;
4740 QualType StrideVType = VType;
4741 if (isOpenMPTaskLoopDirective(DKind)) {
4742 VType =
4743 SemaRef.Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/0);
4744 StrideVType =
4745 SemaRef.Context.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/1);
4746 }
4747
4748 if (!LastIteration.isUsable())
4749 return 0;
4750
4751 // Save the number of iterations.
4752 ExprResult NumIterations = LastIteration;
4753 {
4754 LastIteration = SemaRef.BuildBinOp(
4755 CurScope, SourceLocation(), BO_Sub, LastIteration.get(),
4756 SemaRef.ActOnIntegerConstant(SourceLocation(), 1).get());
4757 if (!LastIteration.isUsable())
4758 return 0;
4759 }
4760
4761 // Calculate the last iteration number beforehand instead of doing this on
4762 // each iteration. Do not do this if the number of iterations may be kfold-ed.
4763 llvm::APSInt Result;
4764 bool IsConstant =
4765 LastIteration.get()->isIntegerConstantExpr(Result, SemaRef.Context);
4766 ExprResult CalcLastIteration;
4767 if (!IsConstant) {
4768 ExprResult SaveRef =
4769 tryBuildCapture(SemaRef, LastIteration.get(), Captures);
4770 LastIteration = SaveRef;
4771
4772 // Prepare SaveRef + 1.
4773 NumIterations = SemaRef.BuildBinOp(
4774 CurScope, SourceLocation(), BO_Add, SaveRef.get(),
4775 SemaRef.ActOnIntegerConstant(SourceLocation(), 1).get());
4776 if (!NumIterations.isUsable())
4777 return 0;
4778 }
4779
4780 SourceLocation InitLoc = IterSpaces[0].InitSrcRange.getBegin();
4781
4782 // Build variables passed into runtime, nesessary for worksharing directives.
4783 ExprResult LB, UB, IL, ST, EUB;
4784 if (isOpenMPWorksharingDirective(DKind) || isOpenMPTaskLoopDirective(DKind) ||
4785 isOpenMPDistributeDirective(DKind)) {
4786 // Lower bound variable, initialized with zero.
4787 VarDecl *LBDecl = buildVarDecl(SemaRef, InitLoc, VType, ".omp.lb");
4788 LB = buildDeclRefExpr(SemaRef, LBDecl, VType, InitLoc);
4789 SemaRef.AddInitializerToDecl(
4790 LBDecl, SemaRef.ActOnIntegerConstant(InitLoc, 0).get(),
4791 /*DirectInit*/ false, /*TypeMayContainAuto*/ false);
4792
4793 // Upper bound variable, initialized with last iteration number.
4794 VarDecl *UBDecl = buildVarDecl(SemaRef, InitLoc, VType, ".omp.ub");
4795 UB = buildDeclRefExpr(SemaRef, UBDecl, VType, InitLoc);
4796 SemaRef.AddInitializerToDecl(UBDecl, LastIteration.get(),
4797 /*DirectInit*/ false,
4798 /*TypeMayContainAuto*/ false);
4799
4800 // A 32-bit variable-flag where runtime returns 1 for the last iteration.
4801 // This will be used to implement clause 'lastprivate'.
4802 QualType Int32Ty = SemaRef.Context.getIntTypeForBitwidth(32, true);
4803 VarDecl *ILDecl = buildVarDecl(SemaRef, InitLoc, Int32Ty, ".omp.is_last");
4804 IL = buildDeclRefExpr(SemaRef, ILDecl, Int32Ty, InitLoc);
4805 SemaRef.AddInitializerToDecl(
4806 ILDecl, SemaRef.ActOnIntegerConstant(InitLoc, 0).get(),
4807 /*DirectInit*/ false, /*TypeMayContainAuto*/ false);
4808
4809 // Stride variable returned by runtime (we initialize it to 1 by default).
4810 VarDecl *STDecl =
4811 buildVarDecl(SemaRef, InitLoc, StrideVType, ".omp.stride");
4812 ST = buildDeclRefExpr(SemaRef, STDecl, StrideVType, InitLoc);
4813 SemaRef.AddInitializerToDecl(
4814 STDecl, SemaRef.ActOnIntegerConstant(InitLoc, 1).get(),
4815 /*DirectInit*/ false, /*TypeMayContainAuto*/ false);
4816
4817 // Build expression: UB = min(UB, LastIteration)
4818 // It is nesessary for CodeGen of directives with static scheduling.
4819 ExprResult IsUBGreater = SemaRef.BuildBinOp(CurScope, InitLoc, BO_GT,
4820 UB.get(), LastIteration.get());
4821 ExprResult CondOp = SemaRef.ActOnConditionalOp(
4822 InitLoc, InitLoc, IsUBGreater.get(), LastIteration.get(), UB.get());
4823 EUB = SemaRef.BuildBinOp(CurScope, InitLoc, BO_Assign, UB.get(),
4824 CondOp.get());
4825 EUB = SemaRef.ActOnFinishFullExpr(EUB.get());
4826 }
4827
4828 // Build the iteration variable and its initialization before loop.
4829 ExprResult IV;
4830 ExprResult Init;
4831 {
4832 VarDecl *IVDecl = buildVarDecl(SemaRef, InitLoc, RealVType, ".omp.iv");
4833 IV = buildDeclRefExpr(SemaRef, IVDecl, RealVType, InitLoc);
4834 Expr *RHS = (isOpenMPWorksharingDirective(DKind) ||
4835 isOpenMPTaskLoopDirective(DKind) ||
4836 isOpenMPDistributeDirective(DKind))
4837 ? LB.get()
4838 : SemaRef.ActOnIntegerConstant(SourceLocation(), 0).get();
4839 Init = SemaRef.BuildBinOp(CurScope, InitLoc, BO_Assign, IV.get(), RHS);
4840 Init = SemaRef.ActOnFinishFullExpr(Init.get());
4841 }
4842
4843 // Loop condition (IV < NumIterations) or (IV <= UB) for worksharing loops.
4844 SourceLocation CondLoc;
4845 ExprResult Cond =
4846 (isOpenMPWorksharingDirective(DKind) ||
4847 isOpenMPTaskLoopDirective(DKind) || isOpenMPDistributeDirective(DKind))
4848 ? SemaRef.BuildBinOp(CurScope, CondLoc, BO_LE, IV.get(), UB.get())
4849 : SemaRef.BuildBinOp(CurScope, CondLoc, BO_LT, IV.get(),
4850 NumIterations.get());
4851
4852 // Loop increment (IV = IV + 1)
4853 SourceLocation IncLoc;
4854 ExprResult Inc =
4855 SemaRef.BuildBinOp(CurScope, IncLoc, BO_Add, IV.get(),
4856 SemaRef.ActOnIntegerConstant(IncLoc, 1).get());
4857 if (!Inc.isUsable())
4858 return 0;
4859 Inc = SemaRef.BuildBinOp(CurScope, IncLoc, BO_Assign, IV.get(), Inc.get());
4860 Inc = SemaRef.ActOnFinishFullExpr(Inc.get());
4861 if (!Inc.isUsable())
4862 return 0;
4863
4864 // Increments for worksharing loops (LB = LB + ST; UB = UB + ST).
4865 // Used for directives with static scheduling.
4866 ExprResult NextLB, NextUB;
4867 if (isOpenMPWorksharingDirective(DKind) || isOpenMPTaskLoopDirective(DKind) ||
4868 isOpenMPDistributeDirective(DKind)) {
4869 // LB + ST
4870 NextLB = SemaRef.BuildBinOp(CurScope, IncLoc, BO_Add, LB.get(), ST.get());
4871 if (!NextLB.isUsable())
4872 return 0;
4873 // LB = LB + ST
4874 NextLB =
4875 SemaRef.BuildBinOp(CurScope, IncLoc, BO_Assign, LB.get(), NextLB.get());
4876 NextLB = SemaRef.ActOnFinishFullExpr(NextLB.get());
4877 if (!NextLB.isUsable())
4878 return 0;
4879 // UB + ST
4880 NextUB = SemaRef.BuildBinOp(CurScope, IncLoc, BO_Add, UB.get(), ST.get());
4881 if (!NextUB.isUsable())
4882 return 0;
4883 // UB = UB + ST
4884 NextUB =
4885 SemaRef.BuildBinOp(CurScope, IncLoc, BO_Assign, UB.get(), NextUB.get());
4886 NextUB = SemaRef.ActOnFinishFullExpr(NextUB.get());
4887 if (!NextUB.isUsable())
4888 return 0;
4889 }
4890
4891 // Build updates and final values of the loop counters.
4892 bool HasErrors = false;
4893 Built.Counters.resize(NestedLoopCount);
4894 Built.Inits.resize(NestedLoopCount);
4895 Built.Updates.resize(NestedLoopCount);
4896 Built.Finals.resize(NestedLoopCount);
4897 SmallVector<Expr *, 4> LoopMultipliers;
4898 {
4899 ExprResult Div;
4900 // Go from inner nested loop to outer.
4901 for (int Cnt = NestedLoopCount - 1; Cnt >= 0; --Cnt) {
4902 LoopIterationSpace &IS = IterSpaces[Cnt];
4903 SourceLocation UpdLoc = IS.IncSrcRange.getBegin();
4904 // Build: Iter = (IV / Div) % IS.NumIters
4905 // where Div is product of previous iterations' IS.NumIters.
4906 ExprResult Iter;
4907 if (Div.isUsable()) {
4908 Iter =
4909 SemaRef.BuildBinOp(CurScope, UpdLoc, BO_Div, IV.get(), Div.get());
4910 } else {
4911 Iter = IV;
4912 assert((Cnt == (int)NestedLoopCount - 1) &&(((Cnt == (int)NestedLoopCount - 1) && "unusable div expected on first iteration only"
) ? static_cast<void> (0) : __assert_fail ("(Cnt == (int)NestedLoopCount - 1) && \"unusable div expected on first iteration only\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4913, __PRETTY_FUNCTION__))
4913 "unusable div expected on first iteration only")(((Cnt == (int)NestedLoopCount - 1) && "unusable div expected on first iteration only"
) ? static_cast<void> (0) : __assert_fail ("(Cnt == (int)NestedLoopCount - 1) && \"unusable div expected on first iteration only\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 4913, __PRETTY_FUNCTION__));
4914 }
4915
4916 if (Cnt != 0 && Iter.isUsable())
4917 Iter = SemaRef.BuildBinOp(CurScope, UpdLoc, BO_Rem, Iter.get(),
4918 IS.NumIterations);
4919 if (!Iter.isUsable()) {
4920 HasErrors = true;
4921 break;
4922 }
4923
4924 // Build update: IS.CounterVar(Private) = IS.Start + Iter * IS.Step
4925 auto *VD = cast<VarDecl>(cast<DeclRefExpr>(IS.CounterVar)->getDecl());
4926 auto *CounterVar = buildDeclRefExpr(SemaRef, VD, IS.CounterVar->getType(),
4927 IS.CounterVar->getExprLoc(),
4928 /*RefersToCapture=*/true);
4929 ExprResult Init = BuildCounterInit(SemaRef, CurScope, UpdLoc, CounterVar,
4930 IS.CounterInit, Captures);
4931 if (!Init.isUsable()) {
4932 HasErrors = true;
4933 break;
4934 }
4935 ExprResult Update = BuildCounterUpdate(
4936 SemaRef, CurScope, UpdLoc, CounterVar, IS.CounterInit, Iter,
4937 IS.CounterStep, IS.Subtract, &Captures);
4938 if (!Update.isUsable()) {
4939 HasErrors = true;
4940 break;
4941 }
4942
4943 // Build final: IS.CounterVar = IS.Start + IS.NumIters * IS.Step
4944 ExprResult Final = BuildCounterUpdate(
4945 SemaRef, CurScope, UpdLoc, CounterVar, IS.CounterInit,
4946 IS.NumIterations, IS.CounterStep, IS.Subtract, &Captures);
4947 if (!Final.isUsable()) {
4948 HasErrors = true;
4949 break;
4950 }
4951
4952 // Build Div for the next iteration: Div <- Div * IS.NumIters
4953 if (Cnt != 0) {
4954 if (Div.isUnset())
4955 Div = IS.NumIterations;
4956 else
4957 Div = SemaRef.BuildBinOp(CurScope, UpdLoc, BO_Mul, Div.get(),
4958 IS.NumIterations);
4959
4960 // Add parentheses (for debugging purposes only).
4961 if (Div.isUsable())
4962 Div = tryBuildCapture(SemaRef, Div.get(), Captures);
4963 if (!Div.isUsable()) {
4964 HasErrors = true;
4965 break;
4966 }
4967 LoopMultipliers.push_back(Div.get());
4968 }
4969 if (!Update.isUsable() || !Final.isUsable()) {
4970 HasErrors = true;
4971 break;
4972 }
4973 // Save results
4974 Built.Counters[Cnt] = IS.CounterVar;
4975 Built.PrivateCounters[Cnt] = IS.PrivateCounterVar;
4976 Built.Inits[Cnt] = Init.get();
4977 Built.Updates[Cnt] = Update.get();
4978 Built.Finals[Cnt] = Final.get();
4979 }
4980 }
4981
4982 if (HasErrors)
4983 return 0;
4984
4985 // Save results
4986 Built.IterationVarRef = IV.get();
4987 Built.LastIteration = LastIteration.get();
4988 Built.NumIterations = NumIterations.get();
4989 Built.CalcLastIteration =
4990 SemaRef.ActOnFinishFullExpr(CalcLastIteration.get()).get();
4991 Built.PreCond = PreCond.get();
4992 Built.PreInits = buildPreInits(C, Captures);
4993 Built.Cond = Cond.get();
4994 Built.Init = Init.get();
4995 Built.Inc = Inc.get();
4996 Built.LB = LB.get();
4997 Built.UB = UB.get();
4998 Built.IL = IL.get();
4999 Built.ST = ST.get();
5000 Built.EUB = EUB.get();
5001 Built.NLB = NextLB.get();
5002 Built.NUB = NextUB.get();
5003
5004 Expr *CounterVal = SemaRef.DefaultLvalueConversion(IV.get()).get();
5005 // Fill data for doacross depend clauses.
5006 for (auto Pair : DSA.getDoacrossDependClauses()) {
5007 if (Pair.first->getDependencyKind() == OMPC_DEPEND_source)
5008 Pair.first->setCounterValue(CounterVal);
5009 else {
5010 if (NestedLoopCount != Pair.second.size() ||
5011 NestedLoopCount != LoopMultipliers.size() + 1) {
5012 // Erroneous case - clause has some problems.
5013 Pair.first->setCounterValue(CounterVal);
5014 continue;
5015 }
5016 assert(Pair.first->getDependencyKind() == OMPC_DEPEND_sink)((Pair.first->getDependencyKind() == OMPC_DEPEND_sink) ? static_cast
<void> (0) : __assert_fail ("Pair.first->getDependencyKind() == OMPC_DEPEND_sink"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5016, __PRETTY_FUNCTION__));
5017 auto I = Pair.second.rbegin();
5018 auto IS = IterSpaces.rbegin();
5019 auto ILM = LoopMultipliers.rbegin();
5020 Expr *UpCounterVal = CounterVal;
5021 Expr *Multiplier = nullptr;
5022 for (int Cnt = NestedLoopCount - 1; Cnt >= 0; --Cnt) {
5023 if (I->first) {
5024 assert(IS->CounterStep)((IS->CounterStep) ? static_cast<void> (0) : __assert_fail
("IS->CounterStep", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5024, __PRETTY_FUNCTION__));
5025 Expr *NormalizedOffset =
5026 SemaRef
5027 .BuildBinOp(CurScope, I->first->getExprLoc(), BO_Div,
5028 I->first, IS->CounterStep)
5029 .get();
5030 if (Multiplier) {
5031 NormalizedOffset =
5032 SemaRef
5033 .BuildBinOp(CurScope, I->first->getExprLoc(), BO_Mul,
5034 NormalizedOffset, Multiplier)
5035 .get();
5036 }
5037 assert(I->second == OO_Plus || I->second == OO_Minus)((I->second == OO_Plus || I->second == OO_Minus) ? static_cast
<void> (0) : __assert_fail ("I->second == OO_Plus || I->second == OO_Minus"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5037, __PRETTY_FUNCTION__));
5038 BinaryOperatorKind BOK = (I->second == OO_Plus) ? BO_Add : BO_Sub;
5039 UpCounterVal =
5040 SemaRef.BuildBinOp(CurScope, I->first->getExprLoc(), BOK,
5041 UpCounterVal, NormalizedOffset).get();
5042 }
5043 Multiplier = *ILM;
5044 ++I;
5045 ++IS;
5046 ++ILM;
5047 }
5048 Pair.first->setCounterValue(UpCounterVal);
5049 }
5050 }
5051
5052 return NestedLoopCount;
5053}
5054
5055static Expr *getCollapseNumberExpr(ArrayRef<OMPClause *> Clauses) {
5056 auto CollapseClauses =
5057 OMPExecutableDirective::getClausesOfKind<OMPCollapseClause>(Clauses);
5058 if (CollapseClauses.begin() != CollapseClauses.end())
5059 return (*CollapseClauses.begin())->getNumForLoops();
5060 return nullptr;
5061}
5062
5063static Expr *getOrderedNumberExpr(ArrayRef<OMPClause *> Clauses) {
5064 auto OrderedClauses =
5065 OMPExecutableDirective::getClausesOfKind<OMPOrderedClause>(Clauses);
5066 if (OrderedClauses.begin() != OrderedClauses.end())
5067 return (*OrderedClauses.begin())->getNumForLoops();
5068 return nullptr;
5069}
5070
5071static bool checkSimdlenSafelenValues(Sema &S, const Expr *Simdlen,
5072 const Expr *Safelen) {
5073 llvm::APSInt SimdlenRes, SafelenRes;
5074 if (Simdlen->isValueDependent() || Simdlen->isTypeDependent() ||
5075 Simdlen->isInstantiationDependent() ||
5076 Simdlen->containsUnexpandedParameterPack())
5077 return false;
5078 if (Safelen->isValueDependent() || Safelen->isTypeDependent() ||
5079 Safelen->isInstantiationDependent() ||
5080 Safelen->containsUnexpandedParameterPack())
5081 return false;
5082 Simdlen->EvaluateAsInt(SimdlenRes, S.Context);
5083 Safelen->EvaluateAsInt(SafelenRes, S.Context);
5084 // OpenMP 4.1 [2.8.1, simd Construct, Restrictions]
5085 // If both simdlen and safelen clauses are specified, the value of the simdlen
5086 // parameter must be less than or equal to the value of the safelen parameter.
5087 if (SimdlenRes > SafelenRes) {
5088 S.Diag(Simdlen->getExprLoc(), diag::err_omp_wrong_simdlen_safelen_values)
5089 << Simdlen->getSourceRange() << Safelen->getSourceRange();
5090 return true;
5091 }
5092 return false;
5093}
5094
5095StmtResult Sema::ActOnOpenMPSimdDirective(
5096 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
5097 SourceLocation EndLoc,
5098 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
5099 if (!AStmt)
5100 return StmtError();
5101
5102 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5102, __PRETTY_FUNCTION__));
5103 OMPLoopDirective::HelperExprs B;
5104 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
5105 // define the nested loops number.
5106 unsigned NestedLoopCount = CheckOpenMPLoop(
5107 OMPD_simd, getCollapseNumberExpr(Clauses), getOrderedNumberExpr(Clauses),
5108 AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), VarsWithImplicitDSA, B);
5109 if (NestedLoopCount == 0)
5110 return StmtError();
5111
5112 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp simd loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp simd loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5113, __PRETTY_FUNCTION__))
5113 "omp simd loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp simd loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp simd loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5113, __PRETTY_FUNCTION__));
5114
5115 if (!CurContext->isDependentContext()) {
5116 // Finalize the clauses that need pre-built expressions for CodeGen.
5117 for (auto C : Clauses) {
5118 if (auto LC = dyn_cast<OMPLinearClause>(C))
5119 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
5120 B.NumIterations, *this, CurScope,
5121 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
5122 return StmtError();
5123 }
5124 }
5125
5126 // OpenMP 4.1 [2.8.1, simd Construct, Restrictions]
5127 // If both simdlen and safelen clauses are specified, the value of the simdlen
5128 // parameter must be less than or equal to the value of the safelen parameter.
5129 OMPSafelenClause *Safelen = nullptr;
5130 OMPSimdlenClause *Simdlen = nullptr;
5131 for (auto *Clause : Clauses) {
5132 if (Clause->getClauseKind() == OMPC_safelen)
5133 Safelen = cast<OMPSafelenClause>(Clause);
5134 else if (Clause->getClauseKind() == OMPC_simdlen)
5135 Simdlen = cast<OMPSimdlenClause>(Clause);
5136 if (Safelen && Simdlen)
5137 break;
5138 }
5139 if (Simdlen && Safelen &&
5140 checkSimdlenSafelenValues(*this, Simdlen->getSimdlen(),
5141 Safelen->getSafelen()))
5142 return StmtError();
5143
5144 getCurFunction()->setHasBranchProtectedScope();
5145 return OMPSimdDirective::Create(Context, StartLoc, EndLoc, NestedLoopCount,
5146 Clauses, AStmt, B);
5147}
5148
5149StmtResult Sema::ActOnOpenMPForDirective(
5150 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
5151 SourceLocation EndLoc,
5152 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
5153 if (!AStmt)
5154 return StmtError();
5155
5156 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5156, __PRETTY_FUNCTION__));
5157 OMPLoopDirective::HelperExprs B;
5158 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
5159 // define the nested loops number.
5160 unsigned NestedLoopCount = CheckOpenMPLoop(
5161 OMPD_for, getCollapseNumberExpr(Clauses), getOrderedNumberExpr(Clauses),
5162 AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), VarsWithImplicitDSA, B);
5163 if (NestedLoopCount == 0)
5164 return StmtError();
5165
5166 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5167, __PRETTY_FUNCTION__))
5167 "omp for loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5167, __PRETTY_FUNCTION__));
5168
5169 if (!CurContext->isDependentContext()) {
5170 // Finalize the clauses that need pre-built expressions for CodeGen.
5171 for (auto C : Clauses) {
5172 if (auto LC = dyn_cast<OMPLinearClause>(C))
5173 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
5174 B.NumIterations, *this, CurScope,
5175 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
5176 return StmtError();
5177 }
5178 }
5179
5180 getCurFunction()->setHasBranchProtectedScope();
5181 return OMPForDirective::Create(Context, StartLoc, EndLoc, NestedLoopCount,
5182 Clauses, AStmt, B, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5183}
5184
5185StmtResult Sema::ActOnOpenMPForSimdDirective(
5186 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
5187 SourceLocation EndLoc,
5188 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
5189 if (!AStmt)
5190 return StmtError();
5191
5192 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5192, __PRETTY_FUNCTION__));
5193 OMPLoopDirective::HelperExprs B;
5194 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
5195 // define the nested loops number.
5196 unsigned NestedLoopCount =
5197 CheckOpenMPLoop(OMPD_for_simd, getCollapseNumberExpr(Clauses),
5198 getOrderedNumberExpr(Clauses), AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
),
5199 VarsWithImplicitDSA, B);
5200 if (NestedLoopCount == 0)
5201 return StmtError();
5202
5203 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for simd loop exprs were not built") ? static_cast<void
> (0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for simd loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5204, __PRETTY_FUNCTION__))
5204 "omp for simd loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for simd loop exprs were not built") ? static_cast<void
> (0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for simd loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5204, __PRETTY_FUNCTION__));
5205
5206 if (!CurContext->isDependentContext()) {
5207 // Finalize the clauses that need pre-built expressions for CodeGen.
5208 for (auto C : Clauses) {
5209 if (auto LC = dyn_cast<OMPLinearClause>(C))
5210 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
5211 B.NumIterations, *this, CurScope,
5212 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
5213 return StmtError();
5214 }
5215 }
5216
5217 // OpenMP 4.1 [2.8.1, simd Construct, Restrictions]
5218 // If both simdlen and safelen clauses are specified, the value of the simdlen
5219 // parameter must be less than or equal to the value of the safelen parameter.
5220 OMPSafelenClause *Safelen = nullptr;
5221 OMPSimdlenClause *Simdlen = nullptr;
5222 for (auto *Clause : Clauses) {
5223 if (Clause->getClauseKind() == OMPC_safelen)
5224 Safelen = cast<OMPSafelenClause>(Clause);
5225 else if (Clause->getClauseKind() == OMPC_simdlen)
5226 Simdlen = cast<OMPSimdlenClause>(Clause);
5227 if (Safelen && Simdlen)
5228 break;
5229 }
5230 if (Simdlen && Safelen &&
5231 checkSimdlenSafelenValues(*this, Simdlen->getSimdlen(),
5232 Safelen->getSafelen()))
5233 return StmtError();
5234
5235 getCurFunction()->setHasBranchProtectedScope();
5236 return OMPForSimdDirective::Create(Context, StartLoc, EndLoc, NestedLoopCount,
5237 Clauses, AStmt, B);
5238}
5239
5240StmtResult Sema::ActOnOpenMPSectionsDirective(ArrayRef<OMPClause *> Clauses,
5241 Stmt *AStmt,
5242 SourceLocation StartLoc,
5243 SourceLocation EndLoc) {
5244 if (!AStmt)
5245 return StmtError();
5246
5247 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5247, __PRETTY_FUNCTION__));
5248 auto BaseStmt = AStmt;
5249 while (CapturedStmt *CS = dyn_cast_or_null<CapturedStmt>(BaseStmt))
5250 BaseStmt = CS->getCapturedStmt();
5251 if (auto C = dyn_cast_or_null<CompoundStmt>(BaseStmt)) {
5252 auto S = C->children();
5253 if (S.begin() == S.end())
5254 return StmtError();
5255 // All associated statements must be '#pragma omp section' except for
5256 // the first one.
5257 for (Stmt *SectionStmt : llvm::make_range(std::next(S.begin()), S.end())) {
5258 if (!SectionStmt || !isa<OMPSectionDirective>(SectionStmt)) {
5259 if (SectionStmt)
5260 Diag(SectionStmt->getLocStart(),
5261 diag::err_omp_sections_substmt_not_section);
5262 return StmtError();
5263 }
5264 cast<OMPSectionDirective>(SectionStmt)
5265 ->setHasCancel(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5266 }
5267 } else {
5268 Diag(AStmt->getLocStart(), diag::err_omp_sections_not_compound_stmt);
5269 return StmtError();
5270 }
5271
5272 getCurFunction()->setHasBranchProtectedScope();
5273
5274 return OMPSectionsDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt,
5275 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5276}
5277
5278StmtResult Sema::ActOnOpenMPSectionDirective(Stmt *AStmt,
5279 SourceLocation StartLoc,
5280 SourceLocation EndLoc) {
5281 if (!AStmt)
5282 return StmtError();
5283
5284 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5284, __PRETTY_FUNCTION__));
5285
5286 getCurFunction()->setHasBranchProtectedScope();
5287 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setParentCancelRegion(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5288
5289 return OMPSectionDirective::Create(Context, StartLoc, EndLoc, AStmt,
5290 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5291}
5292
5293StmtResult Sema::ActOnOpenMPSingleDirective(ArrayRef<OMPClause *> Clauses,
5294 Stmt *AStmt,
5295 SourceLocation StartLoc,
5296 SourceLocation EndLoc) {
5297 if (!AStmt)
5298 return StmtError();
5299
5300 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5300, __PRETTY_FUNCTION__));
5301
5302 getCurFunction()->setHasBranchProtectedScope();
5303
5304 // OpenMP [2.7.3, single Construct, Restrictions]
5305 // The copyprivate clause must not be used with the nowait clause.
5306 OMPClause *Nowait = nullptr;
5307 OMPClause *Copyprivate = nullptr;
5308 for (auto *Clause : Clauses) {
5309 if (Clause->getClauseKind() == OMPC_nowait)
5310 Nowait = Clause;
5311 else if (Clause->getClauseKind() == OMPC_copyprivate)
5312 Copyprivate = Clause;
5313 if (Copyprivate && Nowait) {
5314 Diag(Copyprivate->getLocStart(),
5315 diag::err_omp_single_copyprivate_with_nowait);
5316 Diag(Nowait->getLocStart(), diag::note_omp_nowait_clause_here);
5317 return StmtError();
5318 }
5319 }
5320
5321 return OMPSingleDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt);
5322}
5323
5324StmtResult Sema::ActOnOpenMPMasterDirective(Stmt *AStmt,
5325 SourceLocation StartLoc,
5326 SourceLocation EndLoc) {
5327 if (!AStmt)
5328 return StmtError();
5329
5330 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5330, __PRETTY_FUNCTION__));
5331
5332 getCurFunction()->setHasBranchProtectedScope();
5333
5334 return OMPMasterDirective::Create(Context, StartLoc, EndLoc, AStmt);
5335}
5336
5337StmtResult Sema::ActOnOpenMPCriticalDirective(
5338 const DeclarationNameInfo &DirName, ArrayRef<OMPClause *> Clauses,
5339 Stmt *AStmt, SourceLocation StartLoc, SourceLocation EndLoc) {
5340 if (!AStmt)
5341 return StmtError();
5342
5343 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5343, __PRETTY_FUNCTION__));
5344
5345 bool ErrorFound = false;
5346 llvm::APSInt Hint;
5347 SourceLocation HintLoc;
5348 bool DependentHint = false;
5349 for (auto *C : Clauses) {
5350 if (C->getClauseKind() == OMPC_hint) {
5351 if (!DirName.getName()) {
5352 Diag(C->getLocStart(), diag::err_omp_hint_clause_no_name);
5353 ErrorFound = true;
5354 }
5355 Expr *E = cast<OMPHintClause>(C)->getHint();
5356 if (E->isTypeDependent() || E->isValueDependent() ||
5357 E->isInstantiationDependent())
5358 DependentHint = true;
5359 else {
5360 Hint = E->EvaluateKnownConstInt(Context);
5361 HintLoc = C->getLocStart();
5362 }
5363 }
5364 }
5365 if (ErrorFound)
5366 return StmtError();
5367 auto Pair = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCriticalWithHint(DirName);
5368 if (Pair.first && DirName.getName() && !DependentHint) {
5369 if (llvm::APSInt::compareValues(Hint, Pair.second) != 0) {
5370 Diag(StartLoc, diag::err_omp_critical_with_hint);
5371 if (HintLoc.isValid()) {
5372 Diag(HintLoc, diag::note_omp_critical_hint_here)
5373 << 0 << Hint.toString(/*Radix=*/10, /*Signed=*/false);
5374 } else
5375 Diag(StartLoc, diag::note_omp_critical_no_hint) << 0;
5376 if (auto *C = Pair.first->getSingleClause<OMPHintClause>()) {
5377 Diag(C->getLocStart(), diag::note_omp_critical_hint_here)
5378 << 1
5379 << C->getHint()->EvaluateKnownConstInt(Context).toString(
5380 /*Radix=*/10, /*Signed=*/false);
5381 } else
5382 Diag(Pair.first->getLocStart(), diag::note_omp_critical_no_hint) << 1;
5383 }
5384 }
5385
5386 getCurFunction()->setHasBranchProtectedScope();
5387
5388 auto *Dir = OMPCriticalDirective::Create(Context, DirName, StartLoc, EndLoc,
5389 Clauses, AStmt);
5390 if (!Pair.first && DirName.getName() && !DependentHint)
5391 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addCriticalWithHint(Dir, Hint);
5392 return Dir;
5393}
5394
5395StmtResult Sema::ActOnOpenMPParallelForDirective(
5396 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
5397 SourceLocation EndLoc,
5398 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
5399 if (!AStmt)
5400 return StmtError();
5401
5402 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
5403 // 1.2.2 OpenMP Language Terminology
5404 // Structured block - An executable statement with a single entry at the
5405 // top and a single exit at the bottom.
5406 // The point of exit cannot be a branch out of the structured block.
5407 // longjmp() and throw() must not violate the entry/exit criteria.
5408 CS->getCapturedDecl()->setNothrow();
5409
5410 OMPLoopDirective::HelperExprs B;
5411 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
5412 // define the nested loops number.
5413 unsigned NestedLoopCount =
5414 CheckOpenMPLoop(OMPD_parallel_for, getCollapseNumberExpr(Clauses),
5415 getOrderedNumberExpr(Clauses), AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
),
5416 VarsWithImplicitDSA, B);
5417 if (NestedLoopCount == 0)
5418 return StmtError();
5419
5420 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp parallel for loop exprs were not built") ? static_cast<
void> (0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp parallel for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5421, __PRETTY_FUNCTION__))
5421 "omp parallel for loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp parallel for loop exprs were not built") ? static_cast<
void> (0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp parallel for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5421, __PRETTY_FUNCTION__));
5422
5423 if (!CurContext->isDependentContext()) {
5424 // Finalize the clauses that need pre-built expressions for CodeGen.
5425 for (auto C : Clauses) {
5426 if (auto LC = dyn_cast<OMPLinearClause>(C))
5427 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
5428 B.NumIterations, *this, CurScope,
5429 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
5430 return StmtError();
5431 }
5432 }
5433
5434 getCurFunction()->setHasBranchProtectedScope();
5435 return OMPParallelForDirective::Create(Context, StartLoc, EndLoc,
5436 NestedLoopCount, Clauses, AStmt, B,
5437 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5438}
5439
5440StmtResult Sema::ActOnOpenMPParallelForSimdDirective(
5441 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
5442 SourceLocation EndLoc,
5443 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
5444 if (!AStmt)
5445 return StmtError();
5446
5447 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
5448 // 1.2.2 OpenMP Language Terminology
5449 // Structured block - An executable statement with a single entry at the
5450 // top and a single exit at the bottom.
5451 // The point of exit cannot be a branch out of the structured block.
5452 // longjmp() and throw() must not violate the entry/exit criteria.
5453 CS->getCapturedDecl()->setNothrow();
5454
5455 OMPLoopDirective::HelperExprs B;
5456 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
5457 // define the nested loops number.
5458 unsigned NestedLoopCount =
5459 CheckOpenMPLoop(OMPD_parallel_for_simd, getCollapseNumberExpr(Clauses),
5460 getOrderedNumberExpr(Clauses), AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
),
5461 VarsWithImplicitDSA, B);
5462 if (NestedLoopCount == 0)
5463 return StmtError();
5464
5465 if (!CurContext->isDependentContext()) {
5466 // Finalize the clauses that need pre-built expressions for CodeGen.
5467 for (auto C : Clauses) {
5468 if (auto LC = dyn_cast<OMPLinearClause>(C))
5469 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
5470 B.NumIterations, *this, CurScope,
5471 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
5472 return StmtError();
5473 }
5474 }
5475
5476 // OpenMP 4.1 [2.8.1, simd Construct, Restrictions]
5477 // If both simdlen and safelen clauses are specified, the value of the simdlen
5478 // parameter must be less than or equal to the value of the safelen parameter.
5479 OMPSafelenClause *Safelen = nullptr;
5480 OMPSimdlenClause *Simdlen = nullptr;
5481 for (auto *Clause : Clauses) {
5482 if (Clause->getClauseKind() == OMPC_safelen)
5483 Safelen = cast<OMPSafelenClause>(Clause);
5484 else if (Clause->getClauseKind() == OMPC_simdlen)
5485 Simdlen = cast<OMPSimdlenClause>(Clause);
5486 if (Safelen && Simdlen)
5487 break;
5488 }
5489 if (Simdlen && Safelen &&
5490 checkSimdlenSafelenValues(*this, Simdlen->getSimdlen(),
5491 Safelen->getSafelen()))
5492 return StmtError();
5493
5494 getCurFunction()->setHasBranchProtectedScope();
5495 return OMPParallelForSimdDirective::Create(
5496 Context, StartLoc, EndLoc, NestedLoopCount, Clauses, AStmt, B);
5497}
5498
5499StmtResult
5500Sema::ActOnOpenMPParallelSectionsDirective(ArrayRef<OMPClause *> Clauses,
5501 Stmt *AStmt, SourceLocation StartLoc,
5502 SourceLocation EndLoc) {
5503 if (!AStmt)
5504 return StmtError();
5505
5506 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5506, __PRETTY_FUNCTION__));
5507 auto BaseStmt = AStmt;
5508 while (CapturedStmt *CS = dyn_cast_or_null<CapturedStmt>(BaseStmt))
5509 BaseStmt = CS->getCapturedStmt();
5510 if (auto C = dyn_cast_or_null<CompoundStmt>(BaseStmt)) {
5511 auto S = C->children();
5512 if (S.begin() == S.end())
5513 return StmtError();
5514 // All associated statements must be '#pragma omp section' except for
5515 // the first one.
5516 for (Stmt *SectionStmt : llvm::make_range(std::next(S.begin()), S.end())) {
5517 if (!SectionStmt || !isa<OMPSectionDirective>(SectionStmt)) {
5518 if (SectionStmt)
5519 Diag(SectionStmt->getLocStart(),
5520 diag::err_omp_parallel_sections_substmt_not_section);
5521 return StmtError();
5522 }
5523 cast<OMPSectionDirective>(SectionStmt)
5524 ->setHasCancel(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5525 }
5526 } else {
5527 Diag(AStmt->getLocStart(),
5528 diag::err_omp_parallel_sections_not_compound_stmt);
5529 return StmtError();
5530 }
5531
5532 getCurFunction()->setHasBranchProtectedScope();
5533
5534 return OMPParallelSectionsDirective::Create(
5535 Context, StartLoc, EndLoc, Clauses, AStmt, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5536}
5537
5538StmtResult Sema::ActOnOpenMPTaskDirective(ArrayRef<OMPClause *> Clauses,
5539 Stmt *AStmt, SourceLocation StartLoc,
5540 SourceLocation EndLoc) {
5541 if (!AStmt)
5542 return StmtError();
5543
5544 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
5545 // 1.2.2 OpenMP Language Terminology
5546 // Structured block - An executable statement with a single entry at the
5547 // top and a single exit at the bottom.
5548 // The point of exit cannot be a branch out of the structured block.
5549 // longjmp() and throw() must not violate the entry/exit criteria.
5550 CS->getCapturedDecl()->setNothrow();
5551
5552 getCurFunction()->setHasBranchProtectedScope();
5553
5554 return OMPTaskDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt,
5555 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
5556}
5557
5558StmtResult Sema::ActOnOpenMPTaskyieldDirective(SourceLocation StartLoc,
5559 SourceLocation EndLoc) {
5560 return OMPTaskyieldDirective::Create(Context, StartLoc, EndLoc);
5561}
5562
5563StmtResult Sema::ActOnOpenMPBarrierDirective(SourceLocation StartLoc,
5564 SourceLocation EndLoc) {
5565 return OMPBarrierDirective::Create(Context, StartLoc, EndLoc);
5566}
5567
5568StmtResult Sema::ActOnOpenMPTaskwaitDirective(SourceLocation StartLoc,
5569 SourceLocation EndLoc) {
5570 return OMPTaskwaitDirective::Create(Context, StartLoc, EndLoc);
5571}
5572
5573StmtResult Sema::ActOnOpenMPTaskgroupDirective(Stmt *AStmt,
5574 SourceLocation StartLoc,
5575 SourceLocation EndLoc) {
5576 if (!AStmt)
5577 return StmtError();
5578
5579 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5579, __PRETTY_FUNCTION__));
5580
5581 getCurFunction()->setHasBranchProtectedScope();
5582
5583 return OMPTaskgroupDirective::Create(Context, StartLoc, EndLoc, AStmt);
5584}
5585
5586StmtResult Sema::ActOnOpenMPFlushDirective(ArrayRef<OMPClause *> Clauses,
5587 SourceLocation StartLoc,
5588 SourceLocation EndLoc) {
5589 assert(Clauses.size() <= 1 && "Extra clauses in flush directive")((Clauses.size() <= 1 && "Extra clauses in flush directive"
) ? static_cast<void> (0) : __assert_fail ("Clauses.size() <= 1 && \"Extra clauses in flush directive\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5589, __PRETTY_FUNCTION__));
5590 return OMPFlushDirective::Create(Context, StartLoc, EndLoc, Clauses);
5591}
5592
5593StmtResult Sema::ActOnOpenMPOrderedDirective(ArrayRef<OMPClause *> Clauses,
5594 Stmt *AStmt,
5595 SourceLocation StartLoc,
5596 SourceLocation EndLoc) {
5597 OMPClause *DependFound = nullptr;
5598 OMPClause *DependSourceClause = nullptr;
5599 OMPClause *DependSinkClause = nullptr;
5600 bool ErrorFound = false;
5601 OMPThreadsClause *TC = nullptr;
5602 OMPSIMDClause *SC = nullptr;
5603 for (auto *C : Clauses) {
5604 if (auto *DC = dyn_cast<OMPDependClause>(C)) {
5605 DependFound = C;
5606 if (DC->getDependencyKind() == OMPC_DEPEND_source) {
5607 if (DependSourceClause) {
5608 Diag(C->getLocStart(), diag::err_omp_more_one_clause)
5609 << getOpenMPDirectiveName(OMPD_ordered)
5610 << getOpenMPClauseName(OMPC_depend) << 2;
5611 ErrorFound = true;
5612 } else
5613 DependSourceClause = C;
5614 if (DependSinkClause) {
5615 Diag(C->getLocStart(), diag::err_omp_depend_sink_source_not_allowed)
5616 << 0;
5617 ErrorFound = true;
5618 }
5619 } else if (DC->getDependencyKind() == OMPC_DEPEND_sink) {
5620 if (DependSourceClause) {
5621 Diag(C->getLocStart(), diag::err_omp_depend_sink_source_not_allowed)
5622 << 1;
5623 ErrorFound = true;
5624 }
5625 DependSinkClause = C;
5626 }
5627 } else if (C->getClauseKind() == OMPC_threads)
5628 TC = cast<OMPThreadsClause>(C);
5629 else if (C->getClauseKind() == OMPC_simd)
5630 SC = cast<OMPSIMDClause>(C);
5631 }
5632 if (!ErrorFound && !SC &&
5633 isOpenMPSimdDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentDirective())) {
5634 // OpenMP [2.8.1,simd Construct, Restrictions]
5635 // An ordered construct with the simd clause is the only OpenMP construct
5636 // that can appear in the simd region.
5637 Diag(StartLoc, diag::err_omp_prohibited_region_simd);
5638 ErrorFound = true;
5639 } else if (DependFound && (TC || SC)) {
5640 Diag(DependFound->getLocStart(), diag::err_omp_depend_clause_thread_simd)
5641 << getOpenMPClauseName(TC ? TC->getClauseKind() : SC->getClauseKind());
5642 ErrorFound = true;
5643 } else if (DependFound && !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentOrderedRegionParam()) {
5644 Diag(DependFound->getLocStart(),
5645 diag::err_omp_ordered_directive_without_param);
5646 ErrorFound = true;
5647 } else if (TC || Clauses.empty()) {
5648 if (auto *Param = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentOrderedRegionParam()) {
5649 SourceLocation ErrLoc = TC ? TC->getLocStart() : StartLoc;
5650 Diag(ErrLoc, diag::err_omp_ordered_directive_with_param)
5651 << (TC != nullptr);
5652 Diag(Param->getLocStart(), diag::note_omp_ordered_param);
5653 ErrorFound = true;
5654 }
5655 }
5656 if ((!AStmt && !DependFound) || ErrorFound)
5657 return StmtError();
5658
5659 if (AStmt) {
5660 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 5660, __PRETTY_FUNCTION__));
5661
5662 getCurFunction()->setHasBranchProtectedScope();
5663 }
5664
5665 return OMPOrderedDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt);
5666}
5667
5668namespace {
5669/// \brief Helper class for checking expression in 'omp atomic [update]'
5670/// construct.
5671class OpenMPAtomicUpdateChecker {
5672 /// \brief Error results for atomic update expressions.
5673 enum ExprAnalysisErrorCode {
5674 /// \brief A statement is not an expression statement.
5675 NotAnExpression,
5676 /// \brief Expression is not builtin binary or unary operation.
5677 NotABinaryOrUnaryExpression,
5678 /// \brief Unary operation is not post-/pre- increment/decrement operation.
5679 NotAnUnaryIncDecExpression,
5680 /// \brief An expression is not of scalar type.
5681 NotAScalarType,
5682 /// \brief A binary operation is not an assignment operation.
5683 NotAnAssignmentOp,
5684 /// \brief RHS part of the binary operation is not a binary expression.
5685 NotABinaryExpression,
5686 /// \brief RHS part is not additive/multiplicative/shift/biwise binary
5687 /// expression.
5688 NotABinaryOperator,
5689 /// \brief RHS binary operation does not have reference to the updated LHS
5690 /// part.
5691 NotAnUpdateExpression,
5692 /// \brief No errors is found.
5693 NoError
5694 };
5695 /// \brief Reference to Sema.
5696 Sema &SemaRef;
5697 /// \brief A location for note diagnostics (when error is found).
5698 SourceLocation NoteLoc;
5699 /// \brief 'x' lvalue part of the source atomic expression.
5700 Expr *X;
5701 /// \brief 'expr' rvalue part of the source atomic expression.
5702 Expr *E;
5703 /// \brief Helper expression of the form
5704 /// 'OpaqueValueExpr(x) binop OpaqueValueExpr(expr)' or
5705 /// 'OpaqueValueExpr(expr) binop OpaqueValueExpr(x)'.
5706 Expr *UpdateExpr;
5707 /// \brief Is 'x' a LHS in a RHS part of full update expression. It is
5708 /// important for non-associative operations.
5709 bool IsXLHSInRHSPart;
5710 BinaryOperatorKind Op;
5711 SourceLocation OpLoc;
5712 /// \brief true if the source expression is a postfix unary operation, false
5713 /// if it is a prefix unary operation.
5714 bool IsPostfixUpdate;
5715
5716public:
5717 OpenMPAtomicUpdateChecker(Sema &SemaRef)
5718 : SemaRef(SemaRef), X(nullptr), E(nullptr), UpdateExpr(nullptr),
5719 IsXLHSInRHSPart(false), Op(BO_PtrMemD), IsPostfixUpdate(false) {}
5720 /// \brief Check specified statement that it is suitable for 'atomic update'
5721 /// constructs and extract 'x', 'expr' and Operation from the original
5722 /// expression. If DiagId and NoteId == 0, then only check is performed
5723 /// without error notification.
5724 /// \param DiagId Diagnostic which should be emitted if error is found.
5725 /// \param NoteId Diagnostic note for the main error message.
5726 /// \return true if statement is not an update expression, false otherwise.
5727 bool checkStatement(Stmt *S, unsigned DiagId = 0, unsigned NoteId = 0);
5728 /// \brief Return the 'x' lvalue part of the source atomic expression.
5729 Expr *getX() const { return X; }
5730 /// \brief Return the 'expr' rvalue part of the source atomic expression.
5731 Expr *getExpr() const { return E; }
5732 /// \brief Return the update expression used in calculation of the updated
5733 /// value. Always has form 'OpaqueValueExpr(x) binop OpaqueValueExpr(expr)' or
5734 /// 'OpaqueValueExpr(expr) binop OpaqueValueExpr(x)'.
5735 Expr *getUpdateExpr() const { return UpdateExpr; }
5736 /// \brief Return true if 'x' is LHS in RHS part of full update expression,
5737 /// false otherwise.
5738 bool isXLHSInRHSPart() const { return IsXLHSInRHSPart; }
5739
5740 /// \brief true if the source expression is a postfix unary operation, false
5741 /// if it is a prefix unary operation.
5742 bool isPostfixUpdate() const { return IsPostfixUpdate; }
5743
5744private:
5745 bool checkBinaryOperation(BinaryOperator *AtomicBinOp, unsigned DiagId = 0,
5746 unsigned NoteId = 0);
5747};
5748} // namespace
5749
5750bool OpenMPAtomicUpdateChecker::checkBinaryOperation(
5751 BinaryOperator *AtomicBinOp, unsigned DiagId, unsigned NoteId) {
5752 ExprAnalysisErrorCode ErrorFound = NoError;
5753 SourceLocation ErrorLoc, NoteLoc;
5754 SourceRange ErrorRange, NoteRange;
5755 // Allowed constructs are:
5756 // x = x binop expr;
5757 // x = expr binop x;
5758 if (AtomicBinOp->getOpcode() == BO_Assign) {
5759 X = AtomicBinOp->getLHS();
5760 if (auto *AtomicInnerBinOp = dyn_cast<BinaryOperator>(
5761 AtomicBinOp->getRHS()->IgnoreParenImpCasts())) {
5762 if (AtomicInnerBinOp->isMultiplicativeOp() ||
5763 AtomicInnerBinOp->isAdditiveOp() || AtomicInnerBinOp->isShiftOp() ||
5764 AtomicInnerBinOp->isBitwiseOp()) {
5765 Op = AtomicInnerBinOp->getOpcode();
5766 OpLoc = AtomicInnerBinOp->getOperatorLoc();
5767 auto *LHS = AtomicInnerBinOp->getLHS();
5768 auto *RHS = AtomicInnerBinOp->getRHS();
5769 llvm::FoldingSetNodeID XId, LHSId, RHSId;
5770 X->IgnoreParenImpCasts()->Profile(XId, SemaRef.getASTContext(),
5771 /*Canonical=*/true);
5772 LHS->IgnoreParenImpCasts()->Profile(LHSId, SemaRef.getASTContext(),
5773 /*Canonical=*/true);
5774 RHS->IgnoreParenImpCasts()->Profile(RHSId, SemaRef.getASTContext(),
5775 /*Canonical=*/true);
5776 if (XId == LHSId) {
5777 E = RHS;
5778 IsXLHSInRHSPart = true;
5779 } else if (XId == RHSId) {
5780 E = LHS;
5781 IsXLHSInRHSPart = false;
5782 } else {
5783 ErrorLoc = AtomicInnerBinOp->getExprLoc();
5784 ErrorRange = AtomicInnerBinOp->getSourceRange();
5785 NoteLoc = X->getExprLoc();
5786 NoteRange = X->getSourceRange();
5787 ErrorFound = NotAnUpdateExpression;
5788 }
5789 } else {
5790 ErrorLoc = AtomicInnerBinOp->getExprLoc();
5791 ErrorRange = AtomicInnerBinOp->getSourceRange();
5792 NoteLoc = AtomicInnerBinOp->getOperatorLoc();
5793 NoteRange = SourceRange(NoteLoc, NoteLoc);
5794 ErrorFound = NotABinaryOperator;
5795 }
5796 } else {
5797 NoteLoc = ErrorLoc = AtomicBinOp->getRHS()->getExprLoc();
5798 NoteRange = ErrorRange = AtomicBinOp->getRHS()->getSourceRange();
5799 ErrorFound = NotABinaryExpression;
5800 }
5801 } else {
5802 ErrorLoc = AtomicBinOp->getExprLoc();
5803 ErrorRange = AtomicBinOp->getSourceRange();
5804 NoteLoc = AtomicBinOp->getOperatorLoc();
5805 NoteRange = SourceRange(NoteLoc, NoteLoc);
5806 ErrorFound = NotAnAssignmentOp;
5807 }
5808 if (ErrorFound != NoError && DiagId != 0 && NoteId != 0) {
5809 SemaRef.Diag(ErrorLoc, DiagId) << ErrorRange;
5810 SemaRef.Diag(NoteLoc, NoteId) << ErrorFound << NoteRange;
5811 return true;
5812 } else if (SemaRef.CurContext->isDependentContext())
5813 E = X = UpdateExpr = nullptr;
5814 return ErrorFound != NoError;
5815}
5816
5817bool OpenMPAtomicUpdateChecker::checkStatement(Stmt *S, unsigned DiagId,
5818 unsigned NoteId) {
5819 ExprAnalysisErrorCode ErrorFound = NoError;
5820 SourceLocation ErrorLoc, NoteLoc;
5821 SourceRange ErrorRange, NoteRange;
5822 // Allowed constructs are:
5823 // x++;
5824 // x--;
5825 // ++x;
5826 // --x;
5827 // x binop= expr;
5828 // x = x binop expr;
5829 // x = expr binop x;
5830 if (auto *AtomicBody = dyn_cast<Expr>(S)) {
5831 AtomicBody = AtomicBody->IgnoreParenImpCasts();
5832 if (AtomicBody->getType()->isScalarType() ||
5833 AtomicBody->isInstantiationDependent()) {
5834 if (auto *AtomicCompAssignOp = dyn_cast<CompoundAssignOperator>(
5835 AtomicBody->IgnoreParenImpCasts())) {
5836 // Check for Compound Assignment Operation
5837 Op = BinaryOperator::getOpForCompoundAssignment(
5838 AtomicCompAssignOp->getOpcode());
5839 OpLoc = AtomicCompAssignOp->getOperatorLoc();
5840 E = AtomicCompAssignOp->getRHS();
5841 X = AtomicCompAssignOp->getLHS();
5842 IsXLHSInRHSPart = true;
5843 } else if (auto *AtomicBinOp = dyn_cast<BinaryOperator>(
5844 AtomicBody->IgnoreParenImpCasts())) {
5845 // Check for Binary Operation
5846 if(checkBinaryOperation(AtomicBinOp, DiagId, NoteId))
5847 return true;
5848 } else if (auto *AtomicUnaryOp =
5849 dyn_cast<UnaryOperator>(AtomicBody->IgnoreParenImpCasts())) {
5850 // Check for Unary Operation
5851 if (AtomicUnaryOp->isIncrementDecrementOp()) {
5852 IsPostfixUpdate = AtomicUnaryOp->isPostfix();
5853 Op = AtomicUnaryOp->isIncrementOp() ? BO_Add : BO_Sub;
5854 OpLoc = AtomicUnaryOp->getOperatorLoc();
5855 X = AtomicUnaryOp->getSubExpr();
5856 E = SemaRef.ActOnIntegerConstant(OpLoc, /*uint64_t Val=*/1).get();
5857 IsXLHSInRHSPart = true;
5858 } else {
5859 ErrorFound = NotAnUnaryIncDecExpression;
5860 ErrorLoc = AtomicUnaryOp->getExprLoc();
5861 ErrorRange = AtomicUnaryOp->getSourceRange();
5862 NoteLoc = AtomicUnaryOp->getOperatorLoc();
5863 NoteRange = SourceRange(NoteLoc, NoteLoc);
5864 }
5865 } else if (!AtomicBody->isInstantiationDependent()) {
5866 ErrorFound = NotABinaryOrUnaryExpression;
5867 NoteLoc = ErrorLoc = AtomicBody->getExprLoc();
5868 NoteRange = ErrorRange = AtomicBody->getSourceRange();
5869 }
5870 } else {
5871 ErrorFound = NotAScalarType;
5872 NoteLoc = ErrorLoc = AtomicBody->getLocStart();
5873 NoteRange = ErrorRange = SourceRange(NoteLoc, NoteLoc);
5874 }
5875 } else {
5876 ErrorFound = NotAnExpression;
5877 NoteLoc = ErrorLoc = S->getLocStart();
5878 NoteRange = ErrorRange = SourceRange(NoteLoc, NoteLoc);
5879 }
5880 if (ErrorFound != NoError && DiagId != 0 && NoteId != 0) {
5881 SemaRef.Diag(ErrorLoc, DiagId) << ErrorRange;
5882 SemaRef.Diag(NoteLoc, NoteId) << ErrorFound << NoteRange;
5883 return true;
5884 } else if (SemaRef.CurContext->isDependentContext())
5885 E = X = UpdateExpr = nullptr;
5886 if (ErrorFound == NoError && E && X) {
5887 // Build an update expression of form 'OpaqueValueExpr(x) binop
5888 // OpaqueValueExpr(expr)' or 'OpaqueValueExpr(expr) binop
5889 // OpaqueValueExpr(x)' and then cast it to the type of the 'x' expression.
5890 auto *OVEX = new (SemaRef.getASTContext())
5891 OpaqueValueExpr(X->getExprLoc(), X->getType(), VK_RValue);
5892 auto *OVEExpr = new (SemaRef.getASTContext())
5893 OpaqueValueExpr(E->getExprLoc(), E->getType(), VK_RValue);
5894 auto Update =
5895 SemaRef.CreateBuiltinBinOp(OpLoc, Op, IsXLHSInRHSPart ? OVEX : OVEExpr,
5896 IsXLHSInRHSPart ? OVEExpr : OVEX);
5897 if (Update.isInvalid())
5898 return true;
5899 Update = SemaRef.PerformImplicitConversion(Update.get(), X->getType(),
5900 Sema::AA_Casting);
5901 if (Update.isInvalid())
5902 return true;
5903 UpdateExpr = Update.get();
5904 }
5905 return ErrorFound != NoError;
5906}
5907
5908StmtResult Sema::ActOnOpenMPAtomicDirective(ArrayRef<OMPClause *> Clauses,
5909 Stmt *AStmt,
5910 SourceLocation StartLoc,
5911 SourceLocation EndLoc) {
5912 if (!AStmt)
5913 return StmtError();
5914
5915 auto CS = cast<CapturedStmt>(AStmt);
5916 // 1.2.2 OpenMP Language Terminology
5917 // Structured block - An executable statement with a single entry at the
5918 // top and a single exit at the bottom.
5919 // The point of exit cannot be a branch out of the structured block.
5920 // longjmp() and throw() must not violate the entry/exit criteria.
5921 OpenMPClauseKind AtomicKind = OMPC_unknown;
5922 SourceLocation AtomicKindLoc;
5923 for (auto *C : Clauses) {
5924 if (C->getClauseKind() == OMPC_read || C->getClauseKind() == OMPC_write ||
5925 C->getClauseKind() == OMPC_update ||
5926 C->getClauseKind() == OMPC_capture) {
5927 if (AtomicKind != OMPC_unknown) {
5928 Diag(C->getLocStart(), diag::err_omp_atomic_several_clauses)
5929 << SourceRange(C->getLocStart(), C->getLocEnd());
5930 Diag(AtomicKindLoc, diag::note_omp_atomic_previous_clause)
5931 << getOpenMPClauseName(AtomicKind);
5932 } else {
5933 AtomicKind = C->getClauseKind();
5934 AtomicKindLoc = C->getLocStart();
5935 }
5936 }
5937 }
5938
5939 auto Body = CS->getCapturedStmt();
5940 if (auto *EWC = dyn_cast<ExprWithCleanups>(Body))
5941 Body = EWC->getSubExpr();
5942
5943 Expr *X = nullptr;
5944 Expr *V = nullptr;
5945 Expr *E = nullptr;
5946 Expr *UE = nullptr;
5947 bool IsXLHSInRHSPart = false;
5948 bool IsPostfixUpdate = false;
5949 // OpenMP [2.12.6, atomic Construct]
5950 // In the next expressions:
5951 // * x and v (as applicable) are both l-value expressions with scalar type.
5952 // * During the execution of an atomic region, multiple syntactic
5953 // occurrences of x must designate the same storage location.
5954 // * Neither of v and expr (as applicable) may access the storage location
5955 // designated by x.
5956 // * Neither of x and expr (as applicable) may access the storage location
5957 // designated by v.
5958 // * expr is an expression with scalar type.
5959 // * binop is one of +, *, -, /, &, ^, |, <<, or >>.
5960 // * binop, binop=, ++, and -- are not overloaded operators.
5961 // * The expression x binop expr must be numerically equivalent to x binop
5962 // (expr). This requirement is satisfied if the operators in expr have
5963 // precedence greater than binop, or by using parentheses around expr or
5964 // subexpressions of expr.
5965 // * The expression expr binop x must be numerically equivalent to (expr)
5966 // binop x. This requirement is satisfied if the operators in expr have
5967 // precedence equal to or greater than binop, or by using parentheses around
5968 // expr or subexpressions of expr.
5969 // * For forms that allow multiple occurrences of x, the number of times
5970 // that x is evaluated is unspecified.
5971 if (AtomicKind == OMPC_read) {
5972 enum {
5973 NotAnExpression,
5974 NotAnAssignmentOp,
5975 NotAScalarType,
5976 NotAnLValue,
5977 NoError
5978 } ErrorFound = NoError;
5979 SourceLocation ErrorLoc, NoteLoc;
5980 SourceRange ErrorRange, NoteRange;
5981 // If clause is read:
5982 // v = x;
5983 if (auto AtomicBody = dyn_cast<Expr>(Body)) {
5984 auto AtomicBinOp =
5985 dyn_cast<BinaryOperator>(AtomicBody->IgnoreParenImpCasts());
5986 if (AtomicBinOp && AtomicBinOp->getOpcode() == BO_Assign) {
5987 X = AtomicBinOp->getRHS()->IgnoreParenImpCasts();
5988 V = AtomicBinOp->getLHS()->IgnoreParenImpCasts();
5989 if ((X->isInstantiationDependent() || X->getType()->isScalarType()) &&
5990 (V->isInstantiationDependent() || V->getType()->isScalarType())) {
5991 if (!X->isLValue() || !V->isLValue()) {
5992 auto NotLValueExpr = X->isLValue() ? V : X;
5993 ErrorFound = NotAnLValue;
5994 ErrorLoc = AtomicBinOp->getExprLoc();
5995 ErrorRange = AtomicBinOp->getSourceRange();
5996 NoteLoc = NotLValueExpr->getExprLoc();
5997 NoteRange = NotLValueExpr->getSourceRange();
5998 }
5999 } else if (!X->isInstantiationDependent() ||
6000 !V->isInstantiationDependent()) {
6001 auto NotScalarExpr =
6002 (X->isInstantiationDependent() || X->getType()->isScalarType())
6003 ? V
6004 : X;
6005 ErrorFound = NotAScalarType;
6006 ErrorLoc = AtomicBinOp->getExprLoc();
6007 ErrorRange = AtomicBinOp->getSourceRange();
6008 NoteLoc = NotScalarExpr->getExprLoc();
6009 NoteRange = NotScalarExpr->getSourceRange();
6010 }
6011 } else if (!AtomicBody->isInstantiationDependent()) {
6012 ErrorFound = NotAnAssignmentOp;
6013 ErrorLoc = AtomicBody->getExprLoc();
6014 ErrorRange = AtomicBody->getSourceRange();
6015 NoteLoc = AtomicBinOp ? AtomicBinOp->getOperatorLoc()
6016 : AtomicBody->getExprLoc();
6017 NoteRange = AtomicBinOp ? AtomicBinOp->getSourceRange()
6018 : AtomicBody->getSourceRange();
6019 }
6020 } else {
6021 ErrorFound = NotAnExpression;
6022 NoteLoc = ErrorLoc = Body->getLocStart();
6023 NoteRange = ErrorRange = SourceRange(NoteLoc, NoteLoc);
6024 }
6025 if (ErrorFound != NoError) {
6026 Diag(ErrorLoc, diag::err_omp_atomic_read_not_expression_statement)
6027 << ErrorRange;
6028 Diag(NoteLoc, diag::note_omp_atomic_read_write) << ErrorFound
6029 << NoteRange;
6030 return StmtError();
6031 } else if (CurContext->isDependentContext())
6032 V = X = nullptr;
6033 } else if (AtomicKind == OMPC_write) {
6034 enum {
6035 NotAnExpression,
6036 NotAnAssignmentOp,
6037 NotAScalarType,
6038 NotAnLValue,
6039 NoError
6040 } ErrorFound = NoError;
6041 SourceLocation ErrorLoc, NoteLoc;
6042 SourceRange ErrorRange, NoteRange;
6043 // If clause is write:
6044 // x = expr;
6045 if (auto AtomicBody = dyn_cast<Expr>(Body)) {
6046 auto AtomicBinOp =
6047 dyn_cast<BinaryOperator>(AtomicBody->IgnoreParenImpCasts());
6048 if (AtomicBinOp && AtomicBinOp->getOpcode() == BO_Assign) {
6049 X = AtomicBinOp->getLHS();
6050 E = AtomicBinOp->getRHS();
6051 if ((X->isInstantiationDependent() || X->getType()->isScalarType()) &&
6052 (E->isInstantiationDependent() || E->getType()->isScalarType())) {
6053 if (!X->isLValue()) {
6054 ErrorFound = NotAnLValue;
6055 ErrorLoc = AtomicBinOp->getExprLoc();
6056 ErrorRange = AtomicBinOp->getSourceRange();
6057 NoteLoc = X->getExprLoc();
6058 NoteRange = X->getSourceRange();
6059 }
6060 } else if (!X->isInstantiationDependent() ||
6061 !E->isInstantiationDependent()) {
6062 auto NotScalarExpr =
6063 (X->isInstantiationDependent() || X->getType()->isScalarType())
6064 ? E
6065 : X;
6066 ErrorFound = NotAScalarType;
6067 ErrorLoc = AtomicBinOp->getExprLoc();
6068 ErrorRange = AtomicBinOp->getSourceRange();
6069 NoteLoc = NotScalarExpr->getExprLoc();
6070 NoteRange = NotScalarExpr->getSourceRange();
6071 }
6072 } else if (!AtomicBody->isInstantiationDependent()) {
6073 ErrorFound = NotAnAssignmentOp;
6074 ErrorLoc = AtomicBody->getExprLoc();
6075 ErrorRange = AtomicBody->getSourceRange();
6076 NoteLoc = AtomicBinOp ? AtomicBinOp->getOperatorLoc()
6077 : AtomicBody->getExprLoc();
6078 NoteRange = AtomicBinOp ? AtomicBinOp->getSourceRange()
6079 : AtomicBody->getSourceRange();
6080 }
6081 } else {
6082 ErrorFound = NotAnExpression;
6083 NoteLoc = ErrorLoc = Body->getLocStart();
6084 NoteRange = ErrorRange = SourceRange(NoteLoc, NoteLoc);
6085 }
6086 if (ErrorFound != NoError) {
6087 Diag(ErrorLoc, diag::err_omp_atomic_write_not_expression_statement)
6088 << ErrorRange;
6089 Diag(NoteLoc, diag::note_omp_atomic_read_write) << ErrorFound
6090 << NoteRange;
6091 return StmtError();
6092 } else if (CurContext->isDependentContext())
6093 E = X = nullptr;
6094 } else if (AtomicKind == OMPC_update || AtomicKind == OMPC_unknown) {
6095 // If clause is update:
6096 // x++;
6097 // x--;
6098 // ++x;
6099 // --x;
6100 // x binop= expr;
6101 // x = x binop expr;
6102 // x = expr binop x;
6103 OpenMPAtomicUpdateChecker Checker(*this);
6104 if (Checker.checkStatement(
6105 Body, (AtomicKind == OMPC_update)
6106 ? diag::err_omp_atomic_update_not_expression_statement
6107 : diag::err_omp_atomic_not_expression_statement,
6108 diag::note_omp_atomic_update))
6109 return StmtError();
6110 if (!CurContext->isDependentContext()) {
6111 E = Checker.getExpr();
6112 X = Checker.getX();
6113 UE = Checker.getUpdateExpr();
6114 IsXLHSInRHSPart = Checker.isXLHSInRHSPart();
6115 }
6116 } else if (AtomicKind == OMPC_capture) {
6117 enum {
6118 NotAnAssignmentOp,
6119 NotACompoundStatement,
6120 NotTwoSubstatements,
6121 NotASpecificExpression,
6122 NoError
6123 } ErrorFound = NoError;
6124 SourceLocation ErrorLoc, NoteLoc;
6125 SourceRange ErrorRange, NoteRange;
6126 if (auto *AtomicBody = dyn_cast<Expr>(Body)) {
6127 // If clause is a capture:
6128 // v = x++;
6129 // v = x--;
6130 // v = ++x;
6131 // v = --x;
6132 // v = x binop= expr;
6133 // v = x = x binop expr;
6134 // v = x = expr binop x;
6135 auto *AtomicBinOp =
6136 dyn_cast<BinaryOperator>(AtomicBody->IgnoreParenImpCasts());
6137 if (AtomicBinOp && AtomicBinOp->getOpcode() == BO_Assign) {
6138 V = AtomicBinOp->getLHS();
6139 Body = AtomicBinOp->getRHS()->IgnoreParenImpCasts();
6140 OpenMPAtomicUpdateChecker Checker(*this);
6141 if (Checker.checkStatement(
6142 Body, diag::err_omp_atomic_capture_not_expression_statement,
6143 diag::note_omp_atomic_update))
6144 return StmtError();
6145 E = Checker.getExpr();
6146 X = Checker.getX();
6147 UE = Checker.getUpdateExpr();
6148 IsXLHSInRHSPart = Checker.isXLHSInRHSPart();
6149 IsPostfixUpdate = Checker.isPostfixUpdate();
6150 } else if (!AtomicBody->isInstantiationDependent()) {
6151 ErrorLoc = AtomicBody->getExprLoc();
6152 ErrorRange = AtomicBody->getSourceRange();
6153 NoteLoc = AtomicBinOp ? AtomicBinOp->getOperatorLoc()
6154 : AtomicBody->getExprLoc();
6155 NoteRange = AtomicBinOp ? AtomicBinOp->getSourceRange()
6156 : AtomicBody->getSourceRange();
6157 ErrorFound = NotAnAssignmentOp;
6158 }
6159 if (ErrorFound != NoError) {
6160 Diag(ErrorLoc, diag::err_omp_atomic_capture_not_expression_statement)
6161 << ErrorRange;
6162 Diag(NoteLoc, diag::note_omp_atomic_capture) << ErrorFound << NoteRange;
6163 return StmtError();
6164 } else if (CurContext->isDependentContext()) {
6165 UE = V = E = X = nullptr;
6166 }
6167 } else {
6168 // If clause is a capture:
6169 // { v = x; x = expr; }
6170 // { v = x; x++; }
6171 // { v = x; x--; }
6172 // { v = x; ++x; }
6173 // { v = x; --x; }
6174 // { v = x; x binop= expr; }
6175 // { v = x; x = x binop expr; }
6176 // { v = x; x = expr binop x; }
6177 // { x++; v = x; }
6178 // { x--; v = x; }
6179 // { ++x; v = x; }
6180 // { --x; v = x; }
6181 // { x binop= expr; v = x; }
6182 // { x = x binop expr; v = x; }
6183 // { x = expr binop x; v = x; }
6184 if (auto *CS = dyn_cast<CompoundStmt>(Body)) {
6185 // Check that this is { expr1; expr2; }
6186 if (CS->size() == 2) {
6187 auto *First = CS->body_front();
6188 auto *Second = CS->body_back();
6189 if (auto *EWC = dyn_cast<ExprWithCleanups>(First))
6190 First = EWC->getSubExpr()->IgnoreParenImpCasts();
6191 if (auto *EWC = dyn_cast<ExprWithCleanups>(Second))
6192 Second = EWC->getSubExpr()->IgnoreParenImpCasts();
6193 // Need to find what subexpression is 'v' and what is 'x'.
6194 OpenMPAtomicUpdateChecker Checker(*this);
6195 bool IsUpdateExprFound = !Checker.checkStatement(Second);
6196 BinaryOperator *BinOp = nullptr;
6197 if (IsUpdateExprFound) {
6198 BinOp = dyn_cast<BinaryOperator>(First);
6199 IsUpdateExprFound = BinOp && BinOp->getOpcode() == BO_Assign;
6200 }
6201 if (IsUpdateExprFound && !CurContext->isDependentContext()) {
6202 // { v = x; x++; }
6203 // { v = x; x--; }
6204 // { v = x; ++x; }
6205 // { v = x; --x; }
6206 // { v = x; x binop= expr; }
6207 // { v = x; x = x binop expr; }
6208 // { v = x; x = expr binop x; }
6209 // Check that the first expression has form v = x.
6210 auto *PossibleX = BinOp->getRHS()->IgnoreParenImpCasts();
6211 llvm::FoldingSetNodeID XId, PossibleXId;
6212 Checker.getX()->Profile(XId, Context, /*Canonical=*/true);
6213 PossibleX->Profile(PossibleXId, Context, /*Canonical=*/true);
6214 IsUpdateExprFound = XId == PossibleXId;
6215 if (IsUpdateExprFound) {
6216 V = BinOp->getLHS();
6217 X = Checker.getX();
6218 E = Checker.getExpr();
6219 UE = Checker.getUpdateExpr();
6220 IsXLHSInRHSPart = Checker.isXLHSInRHSPart();
6221 IsPostfixUpdate = true;
6222 }
6223 }
6224 if (!IsUpdateExprFound) {
6225 IsUpdateExprFound = !Checker.checkStatement(First);
6226 BinOp = nullptr;
6227 if (IsUpdateExprFound) {
6228 BinOp = dyn_cast<BinaryOperator>(Second);
6229 IsUpdateExprFound = BinOp && BinOp->getOpcode() == BO_Assign;
6230 }
6231 if (IsUpdateExprFound && !CurContext->isDependentContext()) {
6232 // { x++; v = x; }
6233 // { x--; v = x; }
6234 // { ++x; v = x; }
6235 // { --x; v = x; }
6236 // { x binop= expr; v = x; }
6237 // { x = x binop expr; v = x; }
6238 // { x = expr binop x; v = x; }
6239 // Check that the second expression has form v = x.
6240 auto *PossibleX = BinOp->getRHS()->IgnoreParenImpCasts();
6241 llvm::FoldingSetNodeID XId, PossibleXId;
6242 Checker.getX()->Profile(XId, Context, /*Canonical=*/true);
6243 PossibleX->Profile(PossibleXId, Context, /*Canonical=*/true);
6244 IsUpdateExprFound = XId == PossibleXId;
6245 if (IsUpdateExprFound) {
6246 V = BinOp->getLHS();
6247 X = Checker.getX();
6248 E = Checker.getExpr();
6249 UE = Checker.getUpdateExpr();
6250 IsXLHSInRHSPart = Checker.isXLHSInRHSPart();
6251 IsPostfixUpdate = false;
6252 }
6253 }
6254 }
6255 if (!IsUpdateExprFound) {
6256 // { v = x; x = expr; }
6257 auto *FirstExpr = dyn_cast<Expr>(First);
6258 auto *SecondExpr = dyn_cast<Expr>(Second);
6259 if (!FirstExpr || !SecondExpr ||
6260 !(FirstExpr->isInstantiationDependent() ||
6261 SecondExpr->isInstantiationDependent())) {
6262 auto *FirstBinOp = dyn_cast<BinaryOperator>(First);
6263 if (!FirstBinOp || FirstBinOp->getOpcode() != BO_Assign) {
6264 ErrorFound = NotAnAssignmentOp;
6265 NoteLoc = ErrorLoc = FirstBinOp ? FirstBinOp->getOperatorLoc()
6266 : First->getLocStart();
6267 NoteRange = ErrorRange = FirstBinOp
6268 ? FirstBinOp->getSourceRange()
6269 : SourceRange(ErrorLoc, ErrorLoc);
6270 } else {
6271 auto *SecondBinOp = dyn_cast<BinaryOperator>(Second);
6272 if (!SecondBinOp || SecondBinOp->getOpcode() != BO_Assign) {
6273 ErrorFound = NotAnAssignmentOp;
6274 NoteLoc = ErrorLoc = SecondBinOp
6275 ? SecondBinOp->getOperatorLoc()
6276 : Second->getLocStart();
6277 NoteRange = ErrorRange =
6278 SecondBinOp ? SecondBinOp->getSourceRange()
6279 : SourceRange(ErrorLoc, ErrorLoc);
6280 } else {
6281 auto *PossibleXRHSInFirst =
6282 FirstBinOp->getRHS()->IgnoreParenImpCasts();
6283 auto *PossibleXLHSInSecond =
6284 SecondBinOp->getLHS()->IgnoreParenImpCasts();
6285 llvm::FoldingSetNodeID X1Id, X2Id;
6286 PossibleXRHSInFirst->Profile(X1Id, Context,
6287 /*Canonical=*/true);
6288 PossibleXLHSInSecond->Profile(X2Id, Context,
6289 /*Canonical=*/true);
6290 IsUpdateExprFound = X1Id == X2Id;
6291 if (IsUpdateExprFound) {
6292 V = FirstBinOp->getLHS();
6293 X = SecondBinOp->getLHS();
6294 E = SecondBinOp->getRHS();
6295 UE = nullptr;
6296 IsXLHSInRHSPart = false;
6297 IsPostfixUpdate = true;
6298 } else {
6299 ErrorFound = NotASpecificExpression;
6300 ErrorLoc = FirstBinOp->getExprLoc();
6301 ErrorRange = FirstBinOp->getSourceRange();
6302 NoteLoc = SecondBinOp->getLHS()->getExprLoc();
6303 NoteRange = SecondBinOp->getRHS()->getSourceRange();
6304 }
6305 }
6306 }
6307 }
6308 }
6309 } else {
6310 NoteLoc = ErrorLoc = Body->getLocStart();
6311 NoteRange = ErrorRange =
6312 SourceRange(Body->getLocStart(), Body->getLocStart());
6313 ErrorFound = NotTwoSubstatements;
6314 }
6315 } else {
6316 NoteLoc = ErrorLoc = Body->getLocStart();
6317 NoteRange = ErrorRange =
6318 SourceRange(Body->getLocStart(), Body->getLocStart());
6319 ErrorFound = NotACompoundStatement;
6320 }
6321 if (ErrorFound != NoError) {
6322 Diag(ErrorLoc, diag::err_omp_atomic_capture_not_compound_statement)
6323 << ErrorRange;
6324 Diag(NoteLoc, diag::note_omp_atomic_capture) << ErrorFound << NoteRange;
6325 return StmtError();
6326 } else if (CurContext->isDependentContext()) {
6327 UE = V = E = X = nullptr;
6328 }
6329 }
6330 }
6331
6332 getCurFunction()->setHasBranchProtectedScope();
6333
6334 return OMPAtomicDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt,
6335 X, V, E, UE, IsXLHSInRHSPart,
6336 IsPostfixUpdate);
6337}
6338
6339StmtResult Sema::ActOnOpenMPTargetDirective(ArrayRef<OMPClause *> Clauses,
6340 Stmt *AStmt,
6341 SourceLocation StartLoc,
6342 SourceLocation EndLoc) {
6343 if (!AStmt)
6344 return StmtError();
6345
6346 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
6347 // 1.2.2 OpenMP Language Terminology
6348 // Structured block - An executable statement with a single entry at the
6349 // top and a single exit at the bottom.
6350 // The point of exit cannot be a branch out of the structured block.
6351 // longjmp() and throw() must not violate the entry/exit criteria.
6352 CS->getCapturedDecl()->setNothrow();
6353
6354 // OpenMP [2.16, Nesting of Regions]
6355 // If specified, a teams construct must be contained within a target
6356 // construct. That target construct must contain no statements or directives
6357 // outside of the teams construct.
6358 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasInnerTeamsRegion()) {
6359 auto S = AStmt->IgnoreContainers(/*IgnoreCaptured*/ true);
6360 bool OMPTeamsFound = true;
6361 if (auto *CS = dyn_cast<CompoundStmt>(S)) {
6362 auto I = CS->body_begin();
6363 while (I != CS->body_end()) {
6364 auto OED = dyn_cast<OMPExecutableDirective>(*I);
6365 if (!OED || !isOpenMPTeamsDirective(OED->getDirectiveKind())) {
6366 OMPTeamsFound = false;
6367 break;
6368 }
6369 ++I;
6370 }
6371 assert(I != CS->body_end() && "Not found statement")((I != CS->body_end() && "Not found statement") ? static_cast
<void> (0) : __assert_fail ("I != CS->body_end() && \"Not found statement\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6371, __PRETTY_FUNCTION__));
6372 S = *I;
6373 }
6374 if (!OMPTeamsFound) {
6375 Diag(StartLoc, diag::err_omp_target_contains_not_only_teams);
6376 Diag(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getInnerTeamsRegionLoc(),
6377 diag::note_omp_nested_teams_construct_here);
6378 Diag(S->getLocStart(), diag::note_omp_nested_statement_here)
6379 << isa<OMPExecutableDirective>(S);
6380 return StmtError();
6381 }
6382 }
6383
6384 getCurFunction()->setHasBranchProtectedScope();
6385
6386 return OMPTargetDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt);
6387}
6388
6389StmtResult
6390Sema::ActOnOpenMPTargetParallelDirective(ArrayRef<OMPClause *> Clauses,
6391 Stmt *AStmt, SourceLocation StartLoc,
6392 SourceLocation EndLoc) {
6393 if (!AStmt)
6394 return StmtError();
6395
6396 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
6397 // 1.2.2 OpenMP Language Terminology
6398 // Structured block - An executable statement with a single entry at the
6399 // top and a single exit at the bottom.
6400 // The point of exit cannot be a branch out of the structured block.
6401 // longjmp() and throw() must not violate the entry/exit criteria.
6402 CS->getCapturedDecl()->setNothrow();
6403
6404 getCurFunction()->setHasBranchProtectedScope();
6405
6406 return OMPTargetParallelDirective::Create(Context, StartLoc, EndLoc, Clauses,
6407 AStmt);
6408}
6409
6410StmtResult Sema::ActOnOpenMPTargetParallelForDirective(
6411 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
6412 SourceLocation EndLoc,
6413 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
6414 if (!AStmt)
6415 return StmtError();
6416
6417 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
6418 // 1.2.2 OpenMP Language Terminology
6419 // Structured block - An executable statement with a single entry at the
6420 // top and a single exit at the bottom.
6421 // The point of exit cannot be a branch out of the structured block.
6422 // longjmp() and throw() must not violate the entry/exit criteria.
6423 CS->getCapturedDecl()->setNothrow();
6424
6425 OMPLoopDirective::HelperExprs B;
6426 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
6427 // define the nested loops number.
6428 unsigned NestedLoopCount =
6429 CheckOpenMPLoop(OMPD_target_parallel_for, getCollapseNumberExpr(Clauses),
6430 getOrderedNumberExpr(Clauses), AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
),
6431 VarsWithImplicitDSA, B);
6432 if (NestedLoopCount == 0)
6433 return StmtError();
6434
6435 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp target parallel for loop exprs were not built") ? static_cast
<void> (0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp target parallel for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6436, __PRETTY_FUNCTION__))
6436 "omp target parallel for loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp target parallel for loop exprs were not built") ? static_cast
<void> (0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp target parallel for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6436, __PRETTY_FUNCTION__));
6437
6438 if (!CurContext->isDependentContext()) {
6439 // Finalize the clauses that need pre-built expressions for CodeGen.
6440 for (auto C : Clauses) {
6441 if (auto LC = dyn_cast<OMPLinearClause>(C))
6442 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
6443 B.NumIterations, *this, CurScope,
6444 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
6445 return StmtError();
6446 }
6447 }
6448
6449 getCurFunction()->setHasBranchProtectedScope();
6450 return OMPTargetParallelForDirective::Create(Context, StartLoc, EndLoc,
6451 NestedLoopCount, Clauses, AStmt,
6452 B, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isCancelRegion());
6453}
6454
6455/// \brief Check for existence of a map clause in the list of clauses.
6456static bool HasMapClause(ArrayRef<OMPClause *> Clauses) {
6457 for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
6458 I != E; ++I) {
6459 if (*I != nullptr && (*I)->getClauseKind() == OMPC_map) {
6460 return true;
6461 }
6462 }
6463
6464 return false;
6465}
6466
6467StmtResult Sema::ActOnOpenMPTargetDataDirective(ArrayRef<OMPClause *> Clauses,
6468 Stmt *AStmt,
6469 SourceLocation StartLoc,
6470 SourceLocation EndLoc) {
6471 if (!AStmt)
6472 return StmtError();
6473
6474 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6474, __PRETTY_FUNCTION__));
6475
6476 // OpenMP [2.10.1, Restrictions, p. 97]
6477 // At least one map clause must appear on the directive.
6478 if (!HasMapClause(Clauses)) {
6479 Diag(StartLoc, diag::err_omp_no_map_for_directive) <<
6480 getOpenMPDirectiveName(OMPD_target_data);
6481 return StmtError();
6482 }
6483
6484 getCurFunction()->setHasBranchProtectedScope();
6485
6486 return OMPTargetDataDirective::Create(Context, StartLoc, EndLoc, Clauses,
6487 AStmt);
6488}
6489
6490StmtResult
6491Sema::ActOnOpenMPTargetEnterDataDirective(ArrayRef<OMPClause *> Clauses,
6492 SourceLocation StartLoc,
6493 SourceLocation EndLoc) {
6494 // OpenMP [2.10.2, Restrictions, p. 99]
6495 // At least one map clause must appear on the directive.
6496 if (!HasMapClause(Clauses)) {
6497 Diag(StartLoc, diag::err_omp_no_map_for_directive)
6498 << getOpenMPDirectiveName(OMPD_target_enter_data);
6499 return StmtError();
6500 }
6501
6502 return OMPTargetEnterDataDirective::Create(Context, StartLoc, EndLoc,
6503 Clauses);
6504}
6505
6506StmtResult
6507Sema::ActOnOpenMPTargetExitDataDirective(ArrayRef<OMPClause *> Clauses,
6508 SourceLocation StartLoc,
6509 SourceLocation EndLoc) {
6510 // OpenMP [2.10.3, Restrictions, p. 102]
6511 // At least one map clause must appear on the directive.
6512 if (!HasMapClause(Clauses)) {
6513 Diag(StartLoc, diag::err_omp_no_map_for_directive)
6514 << getOpenMPDirectiveName(OMPD_target_exit_data);
6515 return StmtError();
6516 }
6517
6518 return OMPTargetExitDataDirective::Create(Context, StartLoc, EndLoc, Clauses);
6519}
6520
6521StmtResult Sema::ActOnOpenMPTargetUpdateDirective(ArrayRef<OMPClause *> Clauses,
6522 SourceLocation StartLoc,
6523 SourceLocation EndLoc) {
6524 bool seenMotionClause = false;
6525 for (auto *C : Clauses) {
6526 if (C->getClauseKind() == OMPC_to || C->getClauseKind() == OMPC_from)
6527 seenMotionClause = true;
6528 }
6529 if (!seenMotionClause) {
6530 Diag(StartLoc, diag::err_omp_at_least_one_motion_clause_required);
6531 return StmtError();
6532 }
6533 return OMPTargetUpdateDirective::Create(Context, StartLoc, EndLoc, Clauses);
6534}
6535
6536StmtResult Sema::ActOnOpenMPTeamsDirective(ArrayRef<OMPClause *> Clauses,
6537 Stmt *AStmt, SourceLocation StartLoc,
6538 SourceLocation EndLoc) {
6539 if (!AStmt)
6540 return StmtError();
6541
6542 CapturedStmt *CS = cast<CapturedStmt>(AStmt);
6543 // 1.2.2 OpenMP Language Terminology
6544 // Structured block - An executable statement with a single entry at the
6545 // top and a single exit at the bottom.
6546 // The point of exit cannot be a branch out of the structured block.
6547 // longjmp() and throw() must not violate the entry/exit criteria.
6548 CS->getCapturedDecl()->setNothrow();
6549
6550 getCurFunction()->setHasBranchProtectedScope();
6551
6552 return OMPTeamsDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt);
6553}
6554
6555StmtResult
6556Sema::ActOnOpenMPCancellationPointDirective(SourceLocation StartLoc,
6557 SourceLocation EndLoc,
6558 OpenMPDirectiveKind CancelRegion) {
6559 if (CancelRegion != OMPD_parallel && CancelRegion != OMPD_for &&
6560 CancelRegion != OMPD_sections && CancelRegion != OMPD_taskgroup) {
6561 Diag(StartLoc, diag::err_omp_wrong_cancel_region)
6562 << getOpenMPDirectiveName(CancelRegion);
6563 return StmtError();
6564 }
6565 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isParentNowaitRegion()) {
6566 Diag(StartLoc, diag::err_omp_parent_cancel_region_nowait) << 0;
6567 return StmtError();
6568 }
6569 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isParentOrderedRegion()) {
6570 Diag(StartLoc, diag::err_omp_parent_cancel_region_ordered) << 0;
6571 return StmtError();
6572 }
6573 return OMPCancellationPointDirective::Create(Context, StartLoc, EndLoc,
6574 CancelRegion);
6575}
6576
6577StmtResult Sema::ActOnOpenMPCancelDirective(ArrayRef<OMPClause *> Clauses,
6578 SourceLocation StartLoc,
6579 SourceLocation EndLoc,
6580 OpenMPDirectiveKind CancelRegion) {
6581 if (CancelRegion != OMPD_parallel && CancelRegion != OMPD_for &&
6582 CancelRegion != OMPD_sections && CancelRegion != OMPD_taskgroup) {
6583 Diag(StartLoc, diag::err_omp_wrong_cancel_region)
6584 << getOpenMPDirectiveName(CancelRegion);
6585 return StmtError();
6586 }
6587 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isParentNowaitRegion()) {
6588 Diag(StartLoc, diag::err_omp_parent_cancel_region_nowait) << 1;
6589 return StmtError();
6590 }
6591 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isParentOrderedRegion()) {
6592 Diag(StartLoc, diag::err_omp_parent_cancel_region_ordered) << 1;
6593 return StmtError();
6594 }
6595 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setParentCancelRegion(/*Cancel=*/true);
6596 return OMPCancelDirective::Create(Context, StartLoc, EndLoc, Clauses,
6597 CancelRegion);
6598}
6599
6600static bool checkGrainsizeNumTasksClauses(Sema &S,
6601 ArrayRef<OMPClause *> Clauses) {
6602 OMPClause *PrevClause = nullptr;
6603 bool ErrorFound = false;
6604 for (auto *C : Clauses) {
6605 if (C->getClauseKind() == OMPC_grainsize ||
6606 C->getClauseKind() == OMPC_num_tasks) {
6607 if (!PrevClause)
6608 PrevClause = C;
6609 else if (PrevClause->getClauseKind() != C->getClauseKind()) {
6610 S.Diag(C->getLocStart(),
6611 diag::err_omp_grainsize_num_tasks_mutually_exclusive)
6612 << getOpenMPClauseName(C->getClauseKind())
6613 << getOpenMPClauseName(PrevClause->getClauseKind());
6614 S.Diag(PrevClause->getLocStart(),
6615 diag::note_omp_previous_grainsize_num_tasks)
6616 << getOpenMPClauseName(PrevClause->getClauseKind());
6617 ErrorFound = true;
6618 }
6619 }
6620 }
6621 return ErrorFound;
6622}
6623
6624StmtResult Sema::ActOnOpenMPTaskLoopDirective(
6625 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
6626 SourceLocation EndLoc,
6627 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
6628 if (!AStmt)
6629 return StmtError();
6630
6631 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6631, __PRETTY_FUNCTION__));
6632 OMPLoopDirective::HelperExprs B;
6633 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
6634 // define the nested loops number.
6635 unsigned NestedLoopCount =
6636 CheckOpenMPLoop(OMPD_taskloop, getCollapseNumberExpr(Clauses),
6637 /*OrderedLoopCountExpr=*/nullptr, AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
),
6638 VarsWithImplicitDSA, B);
6639 if (NestedLoopCount == 0)
6640 return StmtError();
6641
6642 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6643, __PRETTY_FUNCTION__))
6643 "omp for loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6643, __PRETTY_FUNCTION__));
6644
6645 // OpenMP, [2.9.2 taskloop Construct, Restrictions]
6646 // The grainsize clause and num_tasks clause are mutually exclusive and may
6647 // not appear on the same taskloop directive.
6648 if (checkGrainsizeNumTasksClauses(*this, Clauses))
6649 return StmtError();
6650
6651 getCurFunction()->setHasBranchProtectedScope();
6652 return OMPTaskLoopDirective::Create(Context, StartLoc, EndLoc,
6653 NestedLoopCount, Clauses, AStmt, B);
6654}
6655
6656StmtResult Sema::ActOnOpenMPTaskLoopSimdDirective(
6657 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
6658 SourceLocation EndLoc,
6659 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
6660 if (!AStmt)
6661 return StmtError();
6662
6663 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6663, __PRETTY_FUNCTION__));
6664 OMPLoopDirective::HelperExprs B;
6665 // In presence of clause 'collapse' or 'ordered' with number of loops, it will
6666 // define the nested loops number.
6667 unsigned NestedLoopCount =
6668 CheckOpenMPLoop(OMPD_taskloop_simd, getCollapseNumberExpr(Clauses),
6669 /*OrderedLoopCountExpr=*/nullptr, AStmt, *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
),
6670 VarsWithImplicitDSA, B);
6671 if (NestedLoopCount == 0)
6672 return StmtError();
6673
6674 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6675, __PRETTY_FUNCTION__))
6675 "omp for loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6675, __PRETTY_FUNCTION__));
6676
6677 if (!CurContext->isDependentContext()) {
6678 // Finalize the clauses that need pre-built expressions for CodeGen.
6679 for (auto C : Clauses) {
6680 if (auto LC = dyn_cast<OMPLinearClause>(C))
6681 if (FinishOpenMPLinearClause(*LC, cast<DeclRefExpr>(B.IterationVarRef),
6682 B.NumIterations, *this, CurScope,
6683 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)))
6684 return StmtError();
6685 }
6686 }
6687
6688 // OpenMP, [2.9.2 taskloop Construct, Restrictions]
6689 // The grainsize clause and num_tasks clause are mutually exclusive and may
6690 // not appear on the same taskloop directive.
6691 if (checkGrainsizeNumTasksClauses(*this, Clauses))
6692 return StmtError();
6693
6694 getCurFunction()->setHasBranchProtectedScope();
6695 return OMPTaskLoopSimdDirective::Create(Context, StartLoc, EndLoc,
6696 NestedLoopCount, Clauses, AStmt, B);
6697}
6698
6699StmtResult Sema::ActOnOpenMPDistributeDirective(
6700 ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc,
6701 SourceLocation EndLoc,
6702 llvm::DenseMap<ValueDecl *, Expr *> &VarsWithImplicitDSA) {
6703 if (!AStmt)
6704 return StmtError();
6705
6706 assert(isa<CapturedStmt>(AStmt) && "Captured statement expected")((isa<CapturedStmt>(AStmt) && "Captured statement expected"
) ? static_cast<void> (0) : __assert_fail ("isa<CapturedStmt>(AStmt) && \"Captured statement expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6706, __PRETTY_FUNCTION__));
6707 OMPLoopDirective::HelperExprs B;
6708 // In presence of clause 'collapse' with number of loops, it will
6709 // define the nested loops number.
6710 unsigned NestedLoopCount =
6711 CheckOpenMPLoop(OMPD_distribute, getCollapseNumberExpr(Clauses),
6712 nullptr /*ordered not a clause on distribute*/, AStmt,
6713 *this, *DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), VarsWithImplicitDSA, B);
6714 if (NestedLoopCount == 0)
6715 return StmtError();
6716
6717 assert((CurContext->isDependentContext() || B.builtAll()) &&(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6718, __PRETTY_FUNCTION__))
6718 "omp for loop exprs were not built")(((CurContext->isDependentContext() || B.builtAll()) &&
"omp for loop exprs were not built") ? static_cast<void>
(0) : __assert_fail ("(CurContext->isDependentContext() || B.builtAll()) && \"omp for loop exprs were not built\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6718, __PRETTY_FUNCTION__));
6719
6720 getCurFunction()->setHasBranchProtectedScope();
6721 return OMPDistributeDirective::Create(Context, StartLoc, EndLoc,
6722 NestedLoopCount, Clauses, AStmt, B);
6723}
6724
6725OMPClause *Sema::ActOnOpenMPSingleExprClause(OpenMPClauseKind Kind, Expr *Expr,
6726 SourceLocation StartLoc,
6727 SourceLocation LParenLoc,
6728 SourceLocation EndLoc) {
6729 OMPClause *Res = nullptr;
6730 switch (Kind) {
6731 case OMPC_final:
6732 Res = ActOnOpenMPFinalClause(Expr, StartLoc, LParenLoc, EndLoc);
6733 break;
6734 case OMPC_num_threads:
6735 Res = ActOnOpenMPNumThreadsClause(Expr, StartLoc, LParenLoc, EndLoc);
6736 break;
6737 case OMPC_safelen:
6738 Res = ActOnOpenMPSafelenClause(Expr, StartLoc, LParenLoc, EndLoc);
6739 break;
6740 case OMPC_simdlen:
6741 Res = ActOnOpenMPSimdlenClause(Expr, StartLoc, LParenLoc, EndLoc);
6742 break;
6743 case OMPC_collapse:
6744 Res = ActOnOpenMPCollapseClause(Expr, StartLoc, LParenLoc, EndLoc);
6745 break;
6746 case OMPC_ordered:
6747 Res = ActOnOpenMPOrderedClause(StartLoc, EndLoc, LParenLoc, Expr);
6748 break;
6749 case OMPC_device:
6750 Res = ActOnOpenMPDeviceClause(Expr, StartLoc, LParenLoc, EndLoc);
6751 break;
6752 case OMPC_num_teams:
6753 Res = ActOnOpenMPNumTeamsClause(Expr, StartLoc, LParenLoc, EndLoc);
6754 break;
6755 case OMPC_thread_limit:
6756 Res = ActOnOpenMPThreadLimitClause(Expr, StartLoc, LParenLoc, EndLoc);
6757 break;
6758 case OMPC_priority:
6759 Res = ActOnOpenMPPriorityClause(Expr, StartLoc, LParenLoc, EndLoc);
6760 break;
6761 case OMPC_grainsize:
6762 Res = ActOnOpenMPGrainsizeClause(Expr, StartLoc, LParenLoc, EndLoc);
6763 break;
6764 case OMPC_num_tasks:
6765 Res = ActOnOpenMPNumTasksClause(Expr, StartLoc, LParenLoc, EndLoc);
6766 break;
6767 case OMPC_hint:
6768 Res = ActOnOpenMPHintClause(Expr, StartLoc, LParenLoc, EndLoc);
6769 break;
6770 case OMPC_if:
6771 case OMPC_default:
6772 case OMPC_proc_bind:
6773 case OMPC_schedule:
6774 case OMPC_private:
6775 case OMPC_firstprivate:
6776 case OMPC_lastprivate:
6777 case OMPC_shared:
6778 case OMPC_reduction:
6779 case OMPC_linear:
6780 case OMPC_aligned:
6781 case OMPC_copyin:
6782 case OMPC_copyprivate:
6783 case OMPC_nowait:
6784 case OMPC_untied:
6785 case OMPC_mergeable:
6786 case OMPC_threadprivate:
6787 case OMPC_flush:
6788 case OMPC_read:
6789 case OMPC_write:
6790 case OMPC_update:
6791 case OMPC_capture:
6792 case OMPC_seq_cst:
6793 case OMPC_depend:
6794 case OMPC_threads:
6795 case OMPC_simd:
6796 case OMPC_map:
6797 case OMPC_nogroup:
6798 case OMPC_dist_schedule:
6799 case OMPC_defaultmap:
6800 case OMPC_unknown:
6801 case OMPC_uniform:
6802 case OMPC_to:
6803 case OMPC_from:
6804 llvm_unreachable("Clause is not allowed.")::llvm::llvm_unreachable_internal("Clause is not allowed.", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6804);
6805 }
6806 return Res;
6807}
6808
6809OMPClause *Sema::ActOnOpenMPIfClause(OpenMPDirectiveKind NameModifier,
6810 Expr *Condition, SourceLocation StartLoc,
6811 SourceLocation LParenLoc,
6812 SourceLocation NameModifierLoc,
6813 SourceLocation ColonLoc,
6814 SourceLocation EndLoc) {
6815 Expr *ValExpr = Condition;
6816 if (!Condition->isValueDependent() && !Condition->isTypeDependent() &&
6817 !Condition->isInstantiationDependent() &&
6818 !Condition->containsUnexpandedParameterPack()) {
6819 ExprResult Val = ActOnBooleanCondition(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(),
6820 Condition->getExprLoc(), Condition);
6821 if (Val.isInvalid())
6822 return nullptr;
6823
6824 ValExpr = Val.get();
6825 }
6826
6827 return new (Context) OMPIfClause(NameModifier, ValExpr, StartLoc, LParenLoc,
6828 NameModifierLoc, ColonLoc, EndLoc);
6829}
6830
6831OMPClause *Sema::ActOnOpenMPFinalClause(Expr *Condition,
6832 SourceLocation StartLoc,
6833 SourceLocation LParenLoc,
6834 SourceLocation EndLoc) {
6835 Expr *ValExpr = Condition;
6836 if (!Condition->isValueDependent() && !Condition->isTypeDependent() &&
6837 !Condition->isInstantiationDependent() &&
6838 !Condition->containsUnexpandedParameterPack()) {
6839 ExprResult Val = ActOnBooleanCondition(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(),
6840 Condition->getExprLoc(), Condition);
6841 if (Val.isInvalid())
6842 return nullptr;
6843
6844 ValExpr = Val.get();
6845 }
6846
6847 return new (Context) OMPFinalClause(ValExpr, StartLoc, LParenLoc, EndLoc);
6848}
6849ExprResult Sema::PerformOpenMPImplicitIntegerConversion(SourceLocation Loc,
6850 Expr *Op) {
6851 if (!Op)
6852 return ExprError();
6853
6854 class IntConvertDiagnoser : public ICEConvertDiagnoser {
6855 public:
6856 IntConvertDiagnoser()
6857 : ICEConvertDiagnoser(/*AllowScopedEnumerations*/ false, false, true) {}
6858 SemaDiagnosticBuilder diagnoseNotInt(Sema &S, SourceLocation Loc,
6859 QualType T) override {
6860 return S.Diag(Loc, diag::err_omp_not_integral) << T;
6861 }
6862 SemaDiagnosticBuilder diagnoseIncomplete(Sema &S, SourceLocation Loc,
6863 QualType T) override {
6864 return S.Diag(Loc, diag::err_omp_incomplete_type) << T;
6865 }
6866 SemaDiagnosticBuilder diagnoseExplicitConv(Sema &S, SourceLocation Loc,
6867 QualType T,
6868 QualType ConvTy) override {
6869 return S.Diag(Loc, diag::err_omp_explicit_conversion) << T << ConvTy;
6870 }
6871 SemaDiagnosticBuilder noteExplicitConv(Sema &S, CXXConversionDecl *Conv,
6872 QualType ConvTy) override {
6873 return S.Diag(Conv->getLocation(), diag::note_omp_conversion_here)
6874 << ConvTy->isEnumeralType() << ConvTy;
6875 }
6876 SemaDiagnosticBuilder diagnoseAmbiguous(Sema &S, SourceLocation Loc,
6877 QualType T) override {
6878 return S.Diag(Loc, diag::err_omp_ambiguous_conversion) << T;
6879 }
6880 SemaDiagnosticBuilder noteAmbiguous(Sema &S, CXXConversionDecl *Conv,
6881 QualType ConvTy) override {
6882 return S.Diag(Conv->getLocation(), diag::note_omp_conversion_here)
6883 << ConvTy->isEnumeralType() << ConvTy;
6884 }
6885 SemaDiagnosticBuilder diagnoseConversion(Sema &, SourceLocation, QualType,
6886 QualType) override {
6887 llvm_unreachable("conversion functions are permitted")::llvm::llvm_unreachable_internal("conversion functions are permitted"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 6887);
6888 }
6889 } ConvertDiagnoser;
6890 return PerformContextualImplicitConversion(Loc, Op, ConvertDiagnoser);
6891}
6892
6893static bool IsNonNegativeIntegerValue(Expr *&ValExpr, Sema &SemaRef,
6894 OpenMPClauseKind CKind,
6895 bool StrictlyPositive) {
6896 if (!ValExpr->isTypeDependent() && !ValExpr->isValueDependent() &&
6897 !ValExpr->isInstantiationDependent()) {
6898 SourceLocation Loc = ValExpr->getExprLoc();
6899 ExprResult Value =
6900 SemaRef.PerformOpenMPImplicitIntegerConversion(Loc, ValExpr);
6901 if (Value.isInvalid())
6902 return false;
6903
6904 ValExpr = Value.get();
6905 // The expression must evaluate to a non-negative integer value.
6906 llvm::APSInt Result;
6907 if (ValExpr->isIntegerConstantExpr(Result, SemaRef.Context) &&
6908 Result.isSigned() &&
6909 !((!StrictlyPositive && Result.isNonNegative()) ||
6910 (StrictlyPositive && Result.isStrictlyPositive()))) {
6911 SemaRef.Diag(Loc, diag::err_omp_negative_expression_in_clause)
6912 << getOpenMPClauseName(CKind) << (StrictlyPositive ? 1 : 0)
6913 << ValExpr->getSourceRange();
6914 return false;
6915 }
6916 }
6917 return true;
6918}
6919
6920OMPClause *Sema::ActOnOpenMPNumThreadsClause(Expr *NumThreads,
6921 SourceLocation StartLoc,
6922 SourceLocation LParenLoc,
6923 SourceLocation EndLoc) {
6924 Expr *ValExpr = NumThreads;
6925
6926 // OpenMP [2.5, Restrictions]
6927 // The num_threads expression must evaluate to a positive integer value.
6928 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_num_threads,
6929 /*StrictlyPositive=*/true))
6930 return nullptr;
6931
6932 return new (Context)
6933 OMPNumThreadsClause(ValExpr, StartLoc, LParenLoc, EndLoc);
6934}
6935
6936ExprResult Sema::VerifyPositiveIntegerConstantInClause(Expr *E,
6937 OpenMPClauseKind CKind,
6938 bool StrictlyPositive) {
6939 if (!E)
6940 return ExprError();
6941 if (E->isValueDependent() || E->isTypeDependent() ||
6942 E->isInstantiationDependent() || E->containsUnexpandedParameterPack())
6943 return E;
6944 llvm::APSInt Result;
6945 ExprResult ICE = VerifyIntegerConstantExpression(E, &Result);
6946 if (ICE.isInvalid())
6947 return ExprError();
6948 if ((StrictlyPositive && !Result.isStrictlyPositive()) ||
6949 (!StrictlyPositive && !Result.isNonNegative())) {
6950 Diag(E->getExprLoc(), diag::err_omp_negative_expression_in_clause)
6951 << getOpenMPClauseName(CKind) << (StrictlyPositive ? 1 : 0)
6952 << E->getSourceRange();
6953 return ExprError();
6954 }
6955 if (CKind == OMPC_aligned && !Result.isPowerOf2()) {
6956 Diag(E->getExprLoc(), diag::warn_omp_alignment_not_power_of_two)
6957 << E->getSourceRange();
6958 return ExprError();
6959 }
6960 if (CKind == OMPC_collapse && DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getAssociatedLoops() == 1)
6961 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setAssociatedLoops(Result.getExtValue());
6962 else if (CKind == OMPC_ordered)
6963 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setAssociatedLoops(Result.getExtValue());
6964 return ICE;
6965}
6966
6967OMPClause *Sema::ActOnOpenMPSafelenClause(Expr *Len, SourceLocation StartLoc,
6968 SourceLocation LParenLoc,
6969 SourceLocation EndLoc) {
6970 // OpenMP [2.8.1, simd construct, Description]
6971 // The parameter of the safelen clause must be a constant
6972 // positive integer expression.
6973 ExprResult Safelen = VerifyPositiveIntegerConstantInClause(Len, OMPC_safelen);
6974 if (Safelen.isInvalid())
6975 return nullptr;
6976 return new (Context)
6977 OMPSafelenClause(Safelen.get(), StartLoc, LParenLoc, EndLoc);
6978}
6979
6980OMPClause *Sema::ActOnOpenMPSimdlenClause(Expr *Len, SourceLocation StartLoc,
6981 SourceLocation LParenLoc,
6982 SourceLocation EndLoc) {
6983 // OpenMP [2.8.1, simd construct, Description]
6984 // The parameter of the simdlen clause must be a constant
6985 // positive integer expression.
6986 ExprResult Simdlen = VerifyPositiveIntegerConstantInClause(Len, OMPC_simdlen);
6987 if (Simdlen.isInvalid())
6988 return nullptr;
6989 return new (Context)
6990 OMPSimdlenClause(Simdlen.get(), StartLoc, LParenLoc, EndLoc);
6991}
6992
6993OMPClause *Sema::ActOnOpenMPCollapseClause(Expr *NumForLoops,
6994 SourceLocation StartLoc,
6995 SourceLocation LParenLoc,
6996 SourceLocation EndLoc) {
6997 // OpenMP [2.7.1, loop construct, Description]
6998 // OpenMP [2.8.1, simd construct, Description]
6999 // OpenMP [2.9.6, distribute construct, Description]
7000 // The parameter of the collapse clause must be a constant
7001 // positive integer expression.
7002 ExprResult NumForLoopsResult =
7003 VerifyPositiveIntegerConstantInClause(NumForLoops, OMPC_collapse);
7004 if (NumForLoopsResult.isInvalid())
7005 return nullptr;
7006 return new (Context)
7007 OMPCollapseClause(NumForLoopsResult.get(), StartLoc, LParenLoc, EndLoc);
7008}
7009
7010OMPClause *Sema::ActOnOpenMPOrderedClause(SourceLocation StartLoc,
7011 SourceLocation EndLoc,
7012 SourceLocation LParenLoc,
7013 Expr *NumForLoops) {
7014 // OpenMP [2.7.1, loop construct, Description]
7015 // OpenMP [2.8.1, simd construct, Description]
7016 // OpenMP [2.9.6, distribute construct, Description]
7017 // The parameter of the ordered clause must be a constant
7018 // positive integer expression if any.
7019 if (NumForLoops && LParenLoc.isValid()) {
7020 ExprResult NumForLoopsResult =
7021 VerifyPositiveIntegerConstantInClause(NumForLoops, OMPC_ordered);
7022 if (NumForLoopsResult.isInvalid())
7023 return nullptr;
7024 NumForLoops = NumForLoopsResult.get();
7025 } else
7026 NumForLoops = nullptr;
7027 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setOrderedRegion(/*IsOrdered=*/true, NumForLoops);
7028 return new (Context)
7029 OMPOrderedClause(NumForLoops, StartLoc, LParenLoc, EndLoc);
7030}
7031
7032OMPClause *Sema::ActOnOpenMPSimpleClause(
7033 OpenMPClauseKind Kind, unsigned Argument, SourceLocation ArgumentLoc,
7034 SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation EndLoc) {
7035 OMPClause *Res = nullptr;
7036 switch (Kind) {
7037 case OMPC_default:
7038 Res =
7039 ActOnOpenMPDefaultClause(static_cast<OpenMPDefaultClauseKind>(Argument),
7040 ArgumentLoc, StartLoc, LParenLoc, EndLoc);
7041 break;
7042 case OMPC_proc_bind:
7043 Res = ActOnOpenMPProcBindClause(
7044 static_cast<OpenMPProcBindClauseKind>(Argument), ArgumentLoc, StartLoc,
7045 LParenLoc, EndLoc);
7046 break;
7047 case OMPC_if:
7048 case OMPC_final:
7049 case OMPC_num_threads:
7050 case OMPC_safelen:
7051 case OMPC_simdlen:
7052 case OMPC_collapse:
7053 case OMPC_schedule:
7054 case OMPC_private:
7055 case OMPC_firstprivate:
7056 case OMPC_lastprivate:
7057 case OMPC_shared:
7058 case OMPC_reduction:
7059 case OMPC_linear:
7060 case OMPC_aligned:
7061 case OMPC_copyin:
7062 case OMPC_copyprivate:
7063 case OMPC_ordered:
7064 case OMPC_nowait:
7065 case OMPC_untied:
7066 case OMPC_mergeable:
7067 case OMPC_threadprivate:
7068 case OMPC_flush:
7069 case OMPC_read:
7070 case OMPC_write:
7071 case OMPC_update:
7072 case OMPC_capture:
7073 case OMPC_seq_cst:
7074 case OMPC_depend:
7075 case OMPC_device:
7076 case OMPC_threads:
7077 case OMPC_simd:
7078 case OMPC_map:
7079 case OMPC_num_teams:
7080 case OMPC_thread_limit:
7081 case OMPC_priority:
7082 case OMPC_grainsize:
7083 case OMPC_nogroup:
7084 case OMPC_num_tasks:
7085 case OMPC_hint:
7086 case OMPC_dist_schedule:
7087 case OMPC_defaultmap:
7088 case OMPC_unknown:
7089 case OMPC_uniform:
7090 case OMPC_to:
7091 case OMPC_from:
7092 llvm_unreachable("Clause is not allowed.")::llvm::llvm_unreachable_internal("Clause is not allowed.", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7092);
7093 }
7094 return Res;
7095}
7096
7097static std::string
7098getListOfPossibleValues(OpenMPClauseKind K, unsigned First, unsigned Last,
7099 ArrayRef<unsigned> Exclude = llvm::None) {
7100 std::string Values;
7101 unsigned Bound = Last >= 2 ? Last - 2 : 0;
7102 unsigned Skipped = Exclude.size();
7103 auto S = Exclude.begin(), E = Exclude.end();
7104 for (unsigned i = First; i < Last; ++i) {
7105 if (std::find(S, E, i) != E) {
7106 --Skipped;
7107 continue;
7108 }
7109 Values += "'";
7110 Values += getOpenMPSimpleClauseTypeName(K, i);
7111 Values += "'";
7112 if (i == Bound - Skipped)
7113 Values += " or ";
7114 else if (i != Bound + 1 - Skipped)
7115 Values += ", ";
7116 }
7117 return Values;
7118}
7119
7120OMPClause *Sema::ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind,
7121 SourceLocation KindKwLoc,
7122 SourceLocation StartLoc,
7123 SourceLocation LParenLoc,
7124 SourceLocation EndLoc) {
7125 if (Kind == OMPC_DEFAULT_unknown) {
7126 static_assert(OMPC_DEFAULT_unknown > 0,
7127 "OMPC_DEFAULT_unknown not greater than 0");
7128 Diag(KindKwLoc, diag::err_omp_unexpected_clause_value)
7129 << getListOfPossibleValues(OMPC_default, /*First=*/0,
7130 /*Last=*/OMPC_DEFAULT_unknown)
7131 << getOpenMPClauseName(OMPC_default);
7132 return nullptr;
7133 }
7134 switch (Kind) {
7135 case OMPC_DEFAULT_none:
7136 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setDefaultDSANone(KindKwLoc);
7137 break;
7138 case OMPC_DEFAULT_shared:
7139 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setDefaultDSAShared(KindKwLoc);
7140 break;
7141 case OMPC_DEFAULT_unknown:
7142 llvm_unreachable("Clause kind is not allowed.")::llvm::llvm_unreachable_internal("Clause kind is not allowed."
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7142);
7143 break;
7144 }
7145 return new (Context)
7146 OMPDefaultClause(Kind, KindKwLoc, StartLoc, LParenLoc, EndLoc);
7147}
7148
7149OMPClause *Sema::ActOnOpenMPProcBindClause(OpenMPProcBindClauseKind Kind,
7150 SourceLocation KindKwLoc,
7151 SourceLocation StartLoc,
7152 SourceLocation LParenLoc,
7153 SourceLocation EndLoc) {
7154 if (Kind == OMPC_PROC_BIND_unknown) {
7155 Diag(KindKwLoc, diag::err_omp_unexpected_clause_value)
7156 << getListOfPossibleValues(OMPC_proc_bind, /*First=*/0,
7157 /*Last=*/OMPC_PROC_BIND_unknown)
7158 << getOpenMPClauseName(OMPC_proc_bind);
7159 return nullptr;
7160 }
7161 return new (Context)
7162 OMPProcBindClause(Kind, KindKwLoc, StartLoc, LParenLoc, EndLoc);
7163}
7164
7165OMPClause *Sema::ActOnOpenMPSingleExprWithArgClause(
7166 OpenMPClauseKind Kind, ArrayRef<unsigned> Argument, Expr *Expr,
7167 SourceLocation StartLoc, SourceLocation LParenLoc,
7168 ArrayRef<SourceLocation> ArgumentLoc, SourceLocation DelimLoc,
7169 SourceLocation EndLoc) {
7170 OMPClause *Res = nullptr;
7171 switch (Kind) {
7172 case OMPC_schedule:
7173 enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements };
7174 assert(Argument.size() == NumberOfElements &&((Argument.size() == NumberOfElements && ArgumentLoc.
size() == NumberOfElements) ? static_cast<void> (0) : __assert_fail
("Argument.size() == NumberOfElements && ArgumentLoc.size() == NumberOfElements"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7175, __PRETTY_FUNCTION__))
7175 ArgumentLoc.size() == NumberOfElements)((Argument.size() == NumberOfElements && ArgumentLoc.
size() == NumberOfElements) ? static_cast<void> (0) : __assert_fail
("Argument.size() == NumberOfElements && ArgumentLoc.size() == NumberOfElements"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7175, __PRETTY_FUNCTION__));
7176 Res = ActOnOpenMPScheduleClause(
7177 static_cast<OpenMPScheduleClauseModifier>(Argument[Modifier1]),
7178 static_cast<OpenMPScheduleClauseModifier>(Argument[Modifier2]),
7179 static_cast<OpenMPScheduleClauseKind>(Argument[ScheduleKind]), Expr,
7180 StartLoc, LParenLoc, ArgumentLoc[Modifier1], ArgumentLoc[Modifier2],
7181 ArgumentLoc[ScheduleKind], DelimLoc, EndLoc);
7182 break;
7183 case OMPC_if:
7184 assert(Argument.size() == 1 && ArgumentLoc.size() == 1)((Argument.size() == 1 && ArgumentLoc.size() == 1) ? static_cast
<void> (0) : __assert_fail ("Argument.size() == 1 && ArgumentLoc.size() == 1"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7184, __PRETTY_FUNCTION__));
7185 Res = ActOnOpenMPIfClause(static_cast<OpenMPDirectiveKind>(Argument.back()),
7186 Expr, StartLoc, LParenLoc, ArgumentLoc.back(),
7187 DelimLoc, EndLoc);
7188 break;
7189 case OMPC_dist_schedule:
7190 Res = ActOnOpenMPDistScheduleClause(
7191 static_cast<OpenMPDistScheduleClauseKind>(Argument.back()), Expr,
7192 StartLoc, LParenLoc, ArgumentLoc.back(), DelimLoc, EndLoc);
7193 break;
7194 case OMPC_defaultmap:
7195 enum { Modifier, DefaultmapKind };
7196 Res = ActOnOpenMPDefaultmapClause(
7197 static_cast<OpenMPDefaultmapClauseModifier>(Argument[Modifier]),
7198 static_cast<OpenMPDefaultmapClauseKind>(Argument[DefaultmapKind]),
7199 StartLoc, LParenLoc, ArgumentLoc[Modifier],
7200 ArgumentLoc[DefaultmapKind], EndLoc);
7201 break;
7202 case OMPC_final:
7203 case OMPC_num_threads:
7204 case OMPC_safelen:
7205 case OMPC_simdlen:
7206 case OMPC_collapse:
7207 case OMPC_default:
7208 case OMPC_proc_bind:
7209 case OMPC_private:
7210 case OMPC_firstprivate:
7211 case OMPC_lastprivate:
7212 case OMPC_shared:
7213 case OMPC_reduction:
7214 case OMPC_linear:
7215 case OMPC_aligned:
7216 case OMPC_copyin:
7217 case OMPC_copyprivate:
7218 case OMPC_ordered:
7219 case OMPC_nowait:
7220 case OMPC_untied:
7221 case OMPC_mergeable:
7222 case OMPC_threadprivate:
7223 case OMPC_flush:
7224 case OMPC_read:
7225 case OMPC_write:
7226 case OMPC_update:
7227 case OMPC_capture:
7228 case OMPC_seq_cst:
7229 case OMPC_depend:
7230 case OMPC_device:
7231 case OMPC_threads:
7232 case OMPC_simd:
7233 case OMPC_map:
7234 case OMPC_num_teams:
7235 case OMPC_thread_limit:
7236 case OMPC_priority:
7237 case OMPC_grainsize:
7238 case OMPC_nogroup:
7239 case OMPC_num_tasks:
7240 case OMPC_hint:
7241 case OMPC_unknown:
7242 case OMPC_uniform:
7243 case OMPC_to:
7244 case OMPC_from:
7245 llvm_unreachable("Clause is not allowed.")::llvm::llvm_unreachable_internal("Clause is not allowed.", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7245);
7246 }
7247 return Res;
7248}
7249
7250static bool checkScheduleModifiers(Sema &S, OpenMPScheduleClauseModifier M1,
7251 OpenMPScheduleClauseModifier M2,
7252 SourceLocation M1Loc, SourceLocation M2Loc) {
7253 if (M1 == OMPC_SCHEDULE_MODIFIER_unknown && M1Loc.isValid()) {
7254 SmallVector<unsigned, 2> Excluded;
7255 if (M2 != OMPC_SCHEDULE_MODIFIER_unknown)
7256 Excluded.push_back(M2);
7257 if (M2 == OMPC_SCHEDULE_MODIFIER_nonmonotonic)
7258 Excluded.push_back(OMPC_SCHEDULE_MODIFIER_monotonic);
7259 if (M2 == OMPC_SCHEDULE_MODIFIER_monotonic)
7260 Excluded.push_back(OMPC_SCHEDULE_MODIFIER_nonmonotonic);
7261 S.Diag(M1Loc, diag::err_omp_unexpected_clause_value)
7262 << getListOfPossibleValues(OMPC_schedule,
7263 /*First=*/OMPC_SCHEDULE_MODIFIER_unknown + 1,
7264 /*Last=*/OMPC_SCHEDULE_MODIFIER_last,
7265 Excluded)
7266 << getOpenMPClauseName(OMPC_schedule);
7267 return true;
7268 }
7269 return false;
7270}
7271
7272OMPClause *Sema::ActOnOpenMPScheduleClause(
7273 OpenMPScheduleClauseModifier M1, OpenMPScheduleClauseModifier M2,
7274 OpenMPScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc,
7275 SourceLocation LParenLoc, SourceLocation M1Loc, SourceLocation M2Loc,
7276 SourceLocation KindLoc, SourceLocation CommaLoc, SourceLocation EndLoc) {
7277 if (checkScheduleModifiers(*this, M1, M2, M1Loc, M2Loc) ||
7278 checkScheduleModifiers(*this, M2, M1, M2Loc, M1Loc))
7279 return nullptr;
7280 // OpenMP, 2.7.1, Loop Construct, Restrictions
7281 // Either the monotonic modifier or the nonmonotonic modifier can be specified
7282 // but not both.
7283 if ((M1 == M2 && M1 != OMPC_SCHEDULE_MODIFIER_unknown) ||
7284 (M1 == OMPC_SCHEDULE_MODIFIER_monotonic &&
7285 M2 == OMPC_SCHEDULE_MODIFIER_nonmonotonic) ||
7286 (M1 == OMPC_SCHEDULE_MODIFIER_nonmonotonic &&
7287 M2 == OMPC_SCHEDULE_MODIFIER_monotonic)) {
7288 Diag(M2Loc, diag::err_omp_unexpected_schedule_modifier)
7289 << getOpenMPSimpleClauseTypeName(OMPC_schedule, M2)
7290 << getOpenMPSimpleClauseTypeName(OMPC_schedule, M1);
7291 return nullptr;
7292 }
7293 if (Kind == OMPC_SCHEDULE_unknown) {
7294 std::string Values;
7295 if (M1Loc.isInvalid() && M2Loc.isInvalid()) {
7296 unsigned Exclude[] = {OMPC_SCHEDULE_unknown};
7297 Values = getListOfPossibleValues(OMPC_schedule, /*First=*/0,
7298 /*Last=*/OMPC_SCHEDULE_MODIFIER_last,
7299 Exclude);
7300 } else {
7301 Values = getListOfPossibleValues(OMPC_schedule, /*First=*/0,
7302 /*Last=*/OMPC_SCHEDULE_unknown);
7303 }
7304 Diag(KindLoc, diag::err_omp_unexpected_clause_value)
7305 << Values << getOpenMPClauseName(OMPC_schedule);
7306 return nullptr;
7307 }
7308 // OpenMP, 2.7.1, Loop Construct, Restrictions
7309 // The nonmonotonic modifier can only be specified with schedule(dynamic) or
7310 // schedule(guided).
7311 if ((M1 == OMPC_SCHEDULE_MODIFIER_nonmonotonic ||
7312 M2 == OMPC_SCHEDULE_MODIFIER_nonmonotonic) &&
7313 Kind != OMPC_SCHEDULE_dynamic && Kind != OMPC_SCHEDULE_guided) {
7314 Diag(M1 == OMPC_SCHEDULE_MODIFIER_nonmonotonic ? M1Loc : M2Loc,
7315 diag::err_omp_schedule_nonmonotonic_static);
7316 return nullptr;
7317 }
7318 Expr *ValExpr = ChunkSize;
7319 Stmt *HelperValStmt = nullptr;
7320 if (ChunkSize) {
7321 if (!ChunkSize->isValueDependent() && !ChunkSize->isTypeDependent() &&
7322 !ChunkSize->isInstantiationDependent() &&
7323 !ChunkSize->containsUnexpandedParameterPack()) {
7324 SourceLocation ChunkSizeLoc = ChunkSize->getLocStart();
7325 ExprResult Val =
7326 PerformOpenMPImplicitIntegerConversion(ChunkSizeLoc, ChunkSize);
7327 if (Val.isInvalid())
7328 return nullptr;
7329
7330 ValExpr = Val.get();
7331
7332 // OpenMP [2.7.1, Restrictions]
7333 // chunk_size must be a loop invariant integer expression with a positive
7334 // value.
7335 llvm::APSInt Result;
7336 if (ValExpr->isIntegerConstantExpr(Result, Context)) {
7337 if (Result.isSigned() && !Result.isStrictlyPositive()) {
7338 Diag(ChunkSizeLoc, diag::err_omp_negative_expression_in_clause)
7339 << "schedule" << 1 << ChunkSize->getSourceRange();
7340 return nullptr;
7341 }
7342 } else if (isParallelOrTaskRegion(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) {
7343 llvm::MapVector<Expr *, DeclRefExpr *> Captures;
7344 ValExpr = tryBuildCapture(*this, ValExpr, Captures).get();
7345 HelperValStmt = buildPreInits(Context, Captures);
7346 }
7347 }
7348 }
7349
7350 return new (Context)
7351 OMPScheduleClause(StartLoc, LParenLoc, KindLoc, CommaLoc, EndLoc, Kind,
7352 ValExpr, HelperValStmt, M1, M1Loc, M2, M2Loc);
7353}
7354
7355OMPClause *Sema::ActOnOpenMPClause(OpenMPClauseKind Kind,
7356 SourceLocation StartLoc,
7357 SourceLocation EndLoc) {
7358 OMPClause *Res = nullptr;
7359 switch (Kind) {
7360 case OMPC_ordered:
7361 Res = ActOnOpenMPOrderedClause(StartLoc, EndLoc);
7362 break;
7363 case OMPC_nowait:
7364 Res = ActOnOpenMPNowaitClause(StartLoc, EndLoc);
7365 break;
7366 case OMPC_untied:
7367 Res = ActOnOpenMPUntiedClause(StartLoc, EndLoc);
7368 break;
7369 case OMPC_mergeable:
7370 Res = ActOnOpenMPMergeableClause(StartLoc, EndLoc);
7371 break;
7372 case OMPC_read:
7373 Res = ActOnOpenMPReadClause(StartLoc, EndLoc);
7374 break;
7375 case OMPC_write:
7376 Res = ActOnOpenMPWriteClause(StartLoc, EndLoc);
7377 break;
7378 case OMPC_update:
7379 Res = ActOnOpenMPUpdateClause(StartLoc, EndLoc);
7380 break;
7381 case OMPC_capture:
7382 Res = ActOnOpenMPCaptureClause(StartLoc, EndLoc);
7383 break;
7384 case OMPC_seq_cst:
7385 Res = ActOnOpenMPSeqCstClause(StartLoc, EndLoc);
7386 break;
7387 case OMPC_threads:
7388 Res = ActOnOpenMPThreadsClause(StartLoc, EndLoc);
7389 break;
7390 case OMPC_simd:
7391 Res = ActOnOpenMPSIMDClause(StartLoc, EndLoc);
7392 break;
7393 case OMPC_nogroup:
7394 Res = ActOnOpenMPNogroupClause(StartLoc, EndLoc);
7395 break;
7396 case OMPC_if:
7397 case OMPC_final:
7398 case OMPC_num_threads:
7399 case OMPC_safelen:
7400 case OMPC_simdlen:
7401 case OMPC_collapse:
7402 case OMPC_schedule:
7403 case OMPC_private:
7404 case OMPC_firstprivate:
7405 case OMPC_lastprivate:
7406 case OMPC_shared:
7407 case OMPC_reduction:
7408 case OMPC_linear:
7409 case OMPC_aligned:
7410 case OMPC_copyin:
7411 case OMPC_copyprivate:
7412 case OMPC_default:
7413 case OMPC_proc_bind:
7414 case OMPC_threadprivate:
7415 case OMPC_flush:
7416 case OMPC_depend:
7417 case OMPC_device:
7418 case OMPC_map:
7419 case OMPC_num_teams:
7420 case OMPC_thread_limit:
7421 case OMPC_priority:
7422 case OMPC_grainsize:
7423 case OMPC_num_tasks:
7424 case OMPC_hint:
7425 case OMPC_dist_schedule:
7426 case OMPC_defaultmap:
7427 case OMPC_unknown:
7428 case OMPC_uniform:
7429 case OMPC_to:
7430 case OMPC_from:
7431 llvm_unreachable("Clause is not allowed.")::llvm::llvm_unreachable_internal("Clause is not allowed.", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7431);
7432 }
7433 return Res;
7434}
7435
7436OMPClause *Sema::ActOnOpenMPNowaitClause(SourceLocation StartLoc,
7437 SourceLocation EndLoc) {
7438 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->setNowaitRegion();
7439 return new (Context) OMPNowaitClause(StartLoc, EndLoc);
7440}
7441
7442OMPClause *Sema::ActOnOpenMPUntiedClause(SourceLocation StartLoc,
7443 SourceLocation EndLoc) {
7444 return new (Context) OMPUntiedClause(StartLoc, EndLoc);
7445}
7446
7447OMPClause *Sema::ActOnOpenMPMergeableClause(SourceLocation StartLoc,
7448 SourceLocation EndLoc) {
7449 return new (Context) OMPMergeableClause(StartLoc, EndLoc);
7450}
7451
7452OMPClause *Sema::ActOnOpenMPReadClause(SourceLocation StartLoc,
7453 SourceLocation EndLoc) {
7454 return new (Context) OMPReadClause(StartLoc, EndLoc);
7455}
7456
7457OMPClause *Sema::ActOnOpenMPWriteClause(SourceLocation StartLoc,
7458 SourceLocation EndLoc) {
7459 return new (Context) OMPWriteClause(StartLoc, EndLoc);
7460}
7461
7462OMPClause *Sema::ActOnOpenMPUpdateClause(SourceLocation StartLoc,
7463 SourceLocation EndLoc) {
7464 return new (Context) OMPUpdateClause(StartLoc, EndLoc);
7465}
7466
7467OMPClause *Sema::ActOnOpenMPCaptureClause(SourceLocation StartLoc,
7468 SourceLocation EndLoc) {
7469 return new (Context) OMPCaptureClause(StartLoc, EndLoc);
7470}
7471
7472OMPClause *Sema::ActOnOpenMPSeqCstClause(SourceLocation StartLoc,
7473 SourceLocation EndLoc) {
7474 return new (Context) OMPSeqCstClause(StartLoc, EndLoc);
7475}
7476
7477OMPClause *Sema::ActOnOpenMPThreadsClause(SourceLocation StartLoc,
7478 SourceLocation EndLoc) {
7479 return new (Context) OMPThreadsClause(StartLoc, EndLoc);
7480}
7481
7482OMPClause *Sema::ActOnOpenMPSIMDClause(SourceLocation StartLoc,
7483 SourceLocation EndLoc) {
7484 return new (Context) OMPSIMDClause(StartLoc, EndLoc);
7485}
7486
7487OMPClause *Sema::ActOnOpenMPNogroupClause(SourceLocation StartLoc,
7488 SourceLocation EndLoc) {
7489 return new (Context) OMPNogroupClause(StartLoc, EndLoc);
7490}
7491
7492OMPClause *Sema::ActOnOpenMPVarListClause(
7493 OpenMPClauseKind Kind, ArrayRef<Expr *> VarList, Expr *TailExpr,
7494 SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation ColonLoc,
7495 SourceLocation EndLoc, CXXScopeSpec &ReductionIdScopeSpec,
7496 const DeclarationNameInfo &ReductionId, OpenMPDependClauseKind DepKind,
7497 OpenMPLinearClauseKind LinKind, OpenMPMapClauseKind MapTypeModifier,
7498 OpenMPMapClauseKind MapType, bool IsMapTypeImplicit,
7499 SourceLocation DepLinMapLoc) {
7500 OMPClause *Res = nullptr;
7501 switch (Kind) {
7502 case OMPC_private:
7503 Res = ActOnOpenMPPrivateClause(VarList, StartLoc, LParenLoc, EndLoc);
7504 break;
7505 case OMPC_firstprivate:
7506 Res = ActOnOpenMPFirstprivateClause(VarList, StartLoc, LParenLoc, EndLoc);
7507 break;
7508 case OMPC_lastprivate:
7509 Res = ActOnOpenMPLastprivateClause(VarList, StartLoc, LParenLoc, EndLoc);
7510 break;
7511 case OMPC_shared:
7512 Res = ActOnOpenMPSharedClause(VarList, StartLoc, LParenLoc, EndLoc);
7513 break;
7514 case OMPC_reduction:
7515 Res = ActOnOpenMPReductionClause(VarList, StartLoc, LParenLoc, ColonLoc,
7516 EndLoc, ReductionIdScopeSpec, ReductionId);
7517 break;
7518 case OMPC_linear:
7519 Res = ActOnOpenMPLinearClause(VarList, TailExpr, StartLoc, LParenLoc,
7520 LinKind, DepLinMapLoc, ColonLoc, EndLoc);
7521 break;
7522 case OMPC_aligned:
7523 Res = ActOnOpenMPAlignedClause(VarList, TailExpr, StartLoc, LParenLoc,
7524 ColonLoc, EndLoc);
7525 break;
7526 case OMPC_copyin:
7527 Res = ActOnOpenMPCopyinClause(VarList, StartLoc, LParenLoc, EndLoc);
7528 break;
7529 case OMPC_copyprivate:
7530 Res = ActOnOpenMPCopyprivateClause(VarList, StartLoc, LParenLoc, EndLoc);
7531 break;
7532 case OMPC_flush:
7533 Res = ActOnOpenMPFlushClause(VarList, StartLoc, LParenLoc, EndLoc);
7534 break;
7535 case OMPC_depend:
7536 Res = ActOnOpenMPDependClause(DepKind, DepLinMapLoc, ColonLoc, VarList,
7537 StartLoc, LParenLoc, EndLoc);
7538 break;
7539 case OMPC_map:
7540 Res = ActOnOpenMPMapClause(MapTypeModifier, MapType, IsMapTypeImplicit,
7541 DepLinMapLoc, ColonLoc, VarList, StartLoc,
7542 LParenLoc, EndLoc);
7543 break;
7544 case OMPC_to:
7545 Res = ActOnOpenMPToClause(VarList, StartLoc, LParenLoc, EndLoc);
7546 break;
7547 case OMPC_from:
7548 Res = ActOnOpenMPFromClause(VarList, StartLoc, LParenLoc, EndLoc);
7549 break;
7550 case OMPC_if:
7551 case OMPC_final:
7552 case OMPC_num_threads:
7553 case OMPC_safelen:
7554 case OMPC_simdlen:
7555 case OMPC_collapse:
7556 case OMPC_default:
7557 case OMPC_proc_bind:
7558 case OMPC_schedule:
7559 case OMPC_ordered:
7560 case OMPC_nowait:
7561 case OMPC_untied:
7562 case OMPC_mergeable:
7563 case OMPC_threadprivate:
7564 case OMPC_read:
7565 case OMPC_write:
7566 case OMPC_update:
7567 case OMPC_capture:
7568 case OMPC_seq_cst:
7569 case OMPC_device:
7570 case OMPC_threads:
7571 case OMPC_simd:
7572 case OMPC_num_teams:
7573 case OMPC_thread_limit:
7574 case OMPC_priority:
7575 case OMPC_grainsize:
7576 case OMPC_nogroup:
7577 case OMPC_num_tasks:
7578 case OMPC_hint:
7579 case OMPC_dist_schedule:
7580 case OMPC_defaultmap:
7581 case OMPC_unknown:
7582 case OMPC_uniform:
7583 llvm_unreachable("Clause is not allowed.")::llvm::llvm_unreachable_internal("Clause is not allowed.", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7583);
7584 }
7585 return Res;
7586}
7587
7588ExprResult Sema::getOpenMPCapturedExpr(VarDecl *Capture, ExprValueKind VK,
7589 ExprObjectKind OK, SourceLocation Loc) {
7590 ExprResult Res = BuildDeclRefExpr(
7591 Capture, Capture->getType().getNonReferenceType(), VK_LValue, Loc);
7592 if (!Res.isUsable())
7593 return ExprError();
7594 if (OK == OK_Ordinary && !getLangOpts().CPlusPlus) {
7595 Res = CreateBuiltinUnaryOp(Loc, UO_Deref, Res.get());
7596 if (!Res.isUsable())
7597 return ExprError();
7598 }
7599 if (VK != VK_LValue && Res.get()->isGLValue()) {
7600 Res = DefaultLvalueConversion(Res.get());
7601 if (!Res.isUsable())
7602 return ExprError();
7603 }
7604 return Res;
7605}
7606
7607static std::pair<ValueDecl *, bool>
7608getPrivateItem(Sema &S, Expr *&RefExpr, SourceLocation &ELoc,
7609 SourceRange &ERange, bool AllowArraySection = false) {
7610 if (RefExpr->isTypeDependent() || RefExpr->isValueDependent() ||
7611 RefExpr->containsUnexpandedParameterPack())
7612 return std::make_pair(nullptr, true);
7613
7614 // OpenMP [3.1, C/C++]
7615 // A list item is a variable name.
7616 // OpenMP [2.9.3.3, Restrictions, p.1]
7617 // A variable that is part of another variable (as an array or
7618 // structure element) cannot appear in a private clause.
7619 RefExpr = RefExpr->IgnoreParens();
7620 enum {
7621 NoArrayExpr = -1,
7622 ArraySubscript = 0,
7623 OMPArraySection = 1
7624 } IsArrayExpr = NoArrayExpr;
7625 if (AllowArraySection) {
7626 if (auto *ASE = dyn_cast_or_null<ArraySubscriptExpr>(RefExpr)) {
7627 auto *Base = ASE->getBase()->IgnoreParenImpCasts();
7628 while (auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
7629 Base = TempASE->getBase()->IgnoreParenImpCasts();
7630 RefExpr = Base;
7631 IsArrayExpr = ArraySubscript;
7632 } else if (auto *OASE = dyn_cast_or_null<OMPArraySectionExpr>(RefExpr)) {
7633 auto *Base = OASE->getBase()->IgnoreParenImpCasts();
7634 while (auto *TempOASE = dyn_cast<OMPArraySectionExpr>(Base))
7635 Base = TempOASE->getBase()->IgnoreParenImpCasts();
7636 while (auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
7637 Base = TempASE->getBase()->IgnoreParenImpCasts();
7638 RefExpr = Base;
7639 IsArrayExpr = OMPArraySection;
7640 }
7641 }
7642 ELoc = RefExpr->getExprLoc();
7643 ERange = RefExpr->getSourceRange();
7644 RefExpr = RefExpr->IgnoreParenImpCasts();
7645 auto *DE = dyn_cast_or_null<DeclRefExpr>(RefExpr);
7646 auto *ME = dyn_cast_or_null<MemberExpr>(RefExpr);
7647 if ((!DE || !isa<VarDecl>(DE->getDecl())) &&
7648 (S.getCurrentThisType().isNull() || !ME ||
7649 !isa<CXXThisExpr>(ME->getBase()->IgnoreParenImpCasts()) ||
7650 !isa<FieldDecl>(ME->getMemberDecl()))) {
7651 if (IsArrayExpr != NoArrayExpr)
7652 S.Diag(ELoc, diag::err_omp_expected_base_var_name) << IsArrayExpr
7653 << ERange;
7654 else {
7655 S.Diag(ELoc,
7656 AllowArraySection
7657 ? diag::err_omp_expected_var_name_member_expr_or_array_item
7658 : diag::err_omp_expected_var_name_member_expr)
7659 << (S.getCurrentThisType().isNull() ? 0 : 1) << ERange;
7660 }
7661 return std::make_pair(nullptr, false);
7662 }
7663 return std::make_pair(DE ? DE->getDecl() : ME->getMemberDecl(), false);
7664}
7665
7666OMPClause *Sema::ActOnOpenMPPrivateClause(ArrayRef<Expr *> VarList,
7667 SourceLocation StartLoc,
7668 SourceLocation LParenLoc,
7669 SourceLocation EndLoc) {
7670 SmallVector<Expr *, 8> Vars;
7671 SmallVector<Expr *, 8> PrivateCopies;
7672 for (auto &RefExpr : VarList) {
7673 assert(RefExpr && "NULL expr in OpenMP private clause.")((RefExpr && "NULL expr in OpenMP private clause.") ?
static_cast<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP private clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7673, __PRETTY_FUNCTION__));
7674 SourceLocation ELoc;
7675 SourceRange ERange;
7676 Expr *SimpleRefExpr = RefExpr;
7677 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange);
7678 if (Res.second) {
7679 // It will be analyzed later.
7680 Vars.push_back(RefExpr);
7681 PrivateCopies.push_back(nullptr);
7682 }
7683 ValueDecl *D = Res.first;
7684 if (!D)
7685 continue;
7686
7687 QualType Type = D->getType();
7688 auto *VD = dyn_cast<VarDecl>(D);
7689
7690 // OpenMP [2.9.3.3, Restrictions, C/C++, p.3]
7691 // A variable that appears in a private clause must not have an incomplete
7692 // type or a reference type.
7693 if (RequireCompleteType(ELoc, Type, diag::err_omp_private_incomplete_type))
7694 continue;
7695 Type = Type.getNonReferenceType();
7696
7697 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
7698 // in a Construct]
7699 // Variables with the predetermined data-sharing attributes may not be
7700 // listed in data-sharing attributes clauses, except for the cases
7701 // listed below. For these exceptions only, listing a predetermined
7702 // variable in a data-sharing attribute clause is allowed and overrides
7703 // the variable's predetermined data-sharing attributes.
7704 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
7705 if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_private) {
7706 Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind)
7707 << getOpenMPClauseName(OMPC_private);
7708 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7709 continue;
7710 }
7711
7712 // Variably modified types are not supported for tasks.
7713 if (!Type->isAnyPointerType() && Type->isVariablyModifiedType() &&
7714 isOpenMPTaskingDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) {
7715 Diag(ELoc, diag::err_omp_variably_modified_type_not_supported)
7716 << getOpenMPClauseName(OMPC_private) << Type
7717 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective());
7718 bool IsDecl =
7719 !VD ||
7720 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
7721 Diag(D->getLocation(),
7722 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
7723 << D;
7724 continue;
7725 }
7726
7727 // OpenMP 4.5 [2.15.5.1, Restrictions, p.3]
7728 // A list item cannot appear in both a map clause and a data-sharing
7729 // attribute clause on the same construct
7730 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective() == OMPD_target) {
7731 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->checkMappableExprComponentListsForDecl(
7732 VD, /* CurrentRegionOnly = */ true,
7733 [&](OMPClauseMappableExprCommon::MappableExprComponentListRef)
7734 -> bool { return true; })) {
7735 Diag(ELoc, diag::err_omp_variable_in_map_and_dsa)
7736 << getOpenMPClauseName(OMPC_private)
7737 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective());
7738 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7739 continue;
7740 }
7741 }
7742
7743 // OpenMP [2.9.3.3, Restrictions, C/C++, p.1]
7744 // A variable of class type (or array thereof) that appears in a private
7745 // clause requires an accessible, unambiguous default constructor for the
7746 // class type.
7747 // Generate helper private variable and initialize it with the default
7748 // value. The address of the original variable is replaced by the address of
7749 // the new private variable in CodeGen. This new variable is not added to
7750 // IdResolver, so the code in the OpenMP region uses original variable for
7751 // proper diagnostics.
7752 Type = Type.getUnqualifiedType();
7753 auto VDPrivate = buildVarDecl(*this, ELoc, Type, D->getName(),
7754 D->hasAttrs() ? &D->getAttrs() : nullptr);
7755 ActOnUninitializedDecl(VDPrivate, /*TypeMayContainAuto=*/false);
7756 if (VDPrivate->isInvalidDecl())
7757 continue;
7758 auto VDPrivateRefExpr = buildDeclRefExpr(
7759 *this, VDPrivate, RefExpr->getType().getUnqualifiedType(), ELoc);
7760
7761 DeclRefExpr *Ref = nullptr;
7762 if (!VD)
7763 Ref = buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/false);
7764 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(D, RefExpr->IgnoreParens(), OMPC_private, Ref);
7765 Vars.push_back(VD ? RefExpr->IgnoreParens() : Ref);
7766 PrivateCopies.push_back(VDPrivateRefExpr);
7767 }
7768
7769 if (Vars.empty())
7770 return nullptr;
7771
7772 return OMPPrivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars,
7773 PrivateCopies);
7774}
7775
7776namespace {
7777class DiagsUninitializedSeveretyRAII {
7778private:
7779 DiagnosticsEngine &Diags;
7780 SourceLocation SavedLoc;
7781 bool IsIgnored;
7782
7783public:
7784 DiagsUninitializedSeveretyRAII(DiagnosticsEngine &Diags, SourceLocation Loc,
7785 bool IsIgnored)
7786 : Diags(Diags), SavedLoc(Loc), IsIgnored(IsIgnored) {
7787 if (!IsIgnored) {
7788 Diags.setSeverity(/*Diag*/ diag::warn_uninit_self_reference_in_init,
7789 /*Map*/ diag::Severity::Ignored, Loc);
7790 }
7791 }
7792 ~DiagsUninitializedSeveretyRAII() {
7793 if (!IsIgnored)
7794 Diags.popMappings(SavedLoc);
7795 }
7796};
7797}
7798
7799OMPClause *Sema::ActOnOpenMPFirstprivateClause(ArrayRef<Expr *> VarList,
7800 SourceLocation StartLoc,
7801 SourceLocation LParenLoc,
7802 SourceLocation EndLoc) {
7803 SmallVector<Expr *, 8> Vars;
7804 SmallVector<Expr *, 8> PrivateCopies;
7805 SmallVector<Expr *, 8> Inits;
7806 SmallVector<Decl *, 4> ExprCaptures;
7807 bool IsImplicitClause =
7808 StartLoc.isInvalid() && LParenLoc.isInvalid() && EndLoc.isInvalid();
7809 auto ImplicitClauseLoc = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getConstructLoc();
7810
7811 for (auto &RefExpr : VarList) {
7812 assert(RefExpr && "NULL expr in OpenMP firstprivate clause.")((RefExpr && "NULL expr in OpenMP firstprivate clause."
) ? static_cast<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP firstprivate clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 7812, __PRETTY_FUNCTION__));
7813 SourceLocation ELoc;
7814 SourceRange ERange;
7815 Expr *SimpleRefExpr = RefExpr;
7816 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange);
7817 if (Res.second) {
7818 // It will be analyzed later.
7819 Vars.push_back(RefExpr);
7820 PrivateCopies.push_back(nullptr);
7821 Inits.push_back(nullptr);
7822 }
7823 ValueDecl *D = Res.first;
7824 if (!D)
7825 continue;
7826
7827 ELoc = IsImplicitClause ? ImplicitClauseLoc : ELoc;
7828 QualType Type = D->getType();
7829 auto *VD = dyn_cast<VarDecl>(D);
7830
7831 // OpenMP [2.9.3.3, Restrictions, C/C++, p.3]
7832 // A variable that appears in a private clause must not have an incomplete
7833 // type or a reference type.
7834 if (RequireCompleteType(ELoc, Type,
7835 diag::err_omp_firstprivate_incomplete_type))
7836 continue;
7837 Type = Type.getNonReferenceType();
7838
7839 // OpenMP [2.9.3.4, Restrictions, C/C++, p.1]
7840 // A variable of class type (or array thereof) that appears in a private
7841 // clause requires an accessible, unambiguous copy constructor for the
7842 // class type.
7843 auto ElemType = Context.getBaseElementType(Type).getNonReferenceType();
7844
7845 // If an implicit firstprivate variable found it was checked already.
7846 DSAStackTy::DSAVarData TopDVar;
7847 if (!IsImplicitClause) {
7848 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
7849 TopDVar = DVar;
7850 bool IsConstant = ElemType.isConstant(Context);
7851 // OpenMP [2.4.13, Data-sharing Attribute Clauses]
7852 // A list item that specifies a given variable may not appear in more
7853 // than one clause on the same directive, except that a variable may be
7854 // specified in both firstprivate and lastprivate clauses.
7855 if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_firstprivate &&
7856 DVar.CKind != OMPC_lastprivate && DVar.RefExpr) {
7857 Diag(ELoc, diag::err_omp_wrong_dsa)
7858 << getOpenMPClauseName(DVar.CKind)
7859 << getOpenMPClauseName(OMPC_firstprivate);
7860 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7861 continue;
7862 }
7863
7864 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
7865 // in a Construct]
7866 // Variables with the predetermined data-sharing attributes may not be
7867 // listed in data-sharing attributes clauses, except for the cases
7868 // listed below. For these exceptions only, listing a predetermined
7869 // variable in a data-sharing attribute clause is allowed and overrides
7870 // the variable's predetermined data-sharing attributes.
7871 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
7872 // in a Construct, C/C++, p.2]
7873 // Variables with const-qualified type having no mutable member may be
7874 // listed in a firstprivate clause, even if they are static data members.
7875 if (!(IsConstant || (VD && VD->isStaticDataMember())) && !DVar.RefExpr &&
7876 DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_shared) {
7877 Diag(ELoc, diag::err_omp_wrong_dsa)
7878 << getOpenMPClauseName(DVar.CKind)
7879 << getOpenMPClauseName(OMPC_firstprivate);
7880 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7881 continue;
7882 }
7883
7884 OpenMPDirectiveKind CurrDir = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective();
7885 // OpenMP [2.9.3.4, Restrictions, p.2]
7886 // A list item that is private within a parallel region must not appear
7887 // in a firstprivate clause on a worksharing construct if any of the
7888 // worksharing regions arising from the worksharing construct ever bind
7889 // to any of the parallel regions arising from the parallel construct.
7890 if (isOpenMPWorksharingDirective(CurrDir) &&
7891 !isOpenMPParallelDirective(CurrDir)) {
7892 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getImplicitDSA(D, true);
7893 if (DVar.CKind != OMPC_shared &&
7894 (isOpenMPParallelDirective(DVar.DKind) ||
7895 DVar.DKind == OMPD_unknown)) {
7896 Diag(ELoc, diag::err_omp_required_access)
7897 << getOpenMPClauseName(OMPC_firstprivate)
7898 << getOpenMPClauseName(OMPC_shared);
7899 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7900 continue;
7901 }
7902 }
7903 // OpenMP [2.9.3.4, Restrictions, p.3]
7904 // A list item that appears in a reduction clause of a parallel construct
7905 // must not appear in a firstprivate clause on a worksharing or task
7906 // construct if any of the worksharing or task regions arising from the
7907 // worksharing or task construct ever bind to any of the parallel regions
7908 // arising from the parallel construct.
7909 // OpenMP [2.9.3.4, Restrictions, p.4]
7910 // A list item that appears in a reduction clause in worksharing
7911 // construct must not appear in a firstprivate clause in a task construct
7912 // encountered during execution of any of the worksharing regions arising
7913 // from the worksharing construct.
7914 if (isOpenMPTaskingDirective(CurrDir)) {
7915 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasInnermostDSA(
7916 D, [](OpenMPClauseKind C) -> bool { return C == OMPC_reduction; },
7917 [](OpenMPDirectiveKind K) -> bool {
7918 return isOpenMPParallelDirective(K) ||
7919 isOpenMPWorksharingDirective(K);
7920 },
7921 false);
7922 if (DVar.CKind == OMPC_reduction &&
7923 (isOpenMPParallelDirective(DVar.DKind) ||
7924 isOpenMPWorksharingDirective(DVar.DKind))) {
7925 Diag(ELoc, diag::err_omp_parallel_reduction_in_task_firstprivate)
7926 << getOpenMPDirectiveName(DVar.DKind);
7927 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7928 continue;
7929 }
7930 }
7931
7932 // OpenMP 4.5 [2.15.3.4, Restrictions, p.3]
7933 // A list item that is private within a teams region must not appear in a
7934 // firstprivate clause on a distribute construct if any of the distribute
7935 // regions arising from the distribute construct ever bind to any of the
7936 // teams regions arising from the teams construct.
7937 // OpenMP 4.5 [2.15.3.4, Restrictions, p.3]
7938 // A list item that appears in a reduction clause of a teams construct
7939 // must not appear in a firstprivate clause on a distribute construct if
7940 // any of the distribute regions arising from the distribute construct
7941 // ever bind to any of the teams regions arising from the teams construct.
7942 // OpenMP 4.5 [2.10.8, Distribute Construct, p.3]
7943 // A list item may appear in a firstprivate or lastprivate clause but not
7944 // both.
7945 if (CurrDir == OMPD_distribute) {
7946 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasInnermostDSA(
7947 D, [](OpenMPClauseKind C) -> bool { return C == OMPC_private; },
7948 [](OpenMPDirectiveKind K) -> bool {
7949 return isOpenMPTeamsDirective(K);
7950 },
7951 false);
7952 if (DVar.CKind == OMPC_private && isOpenMPTeamsDirective(DVar.DKind)) {
7953 Diag(ELoc, diag::err_omp_firstprivate_distribute_private_teams);
7954 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7955 continue;
7956 }
7957 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->hasInnermostDSA(
7958 D, [](OpenMPClauseKind C) -> bool { return C == OMPC_reduction; },
7959 [](OpenMPDirectiveKind K) -> bool {
7960 return isOpenMPTeamsDirective(K);
7961 },
7962 false);
7963 if (DVar.CKind == OMPC_reduction &&
7964 isOpenMPTeamsDirective(DVar.DKind)) {
7965 Diag(ELoc, diag::err_omp_firstprivate_distribute_in_teams_reduction);
7966 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7967 continue;
7968 }
7969 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
7970 if (DVar.CKind == OMPC_lastprivate) {
7971 Diag(ELoc, diag::err_omp_firstprivate_and_lastprivate_in_distribute);
7972 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7973 continue;
7974 }
7975 }
7976 // OpenMP 4.5 [2.15.5.1, Restrictions, p.3]
7977 // A list item cannot appear in both a map clause and a data-sharing
7978 // attribute clause on the same construct
7979 if (CurrDir == OMPD_target) {
7980 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->checkMappableExprComponentListsForDecl(
7981 VD, /* CurrentRegionOnly = */ true,
7982 [&](OMPClauseMappableExprCommon::MappableExprComponentListRef)
7983 -> bool { return true; })) {
7984 Diag(ELoc, diag::err_omp_variable_in_map_and_dsa)
7985 << getOpenMPClauseName(OMPC_firstprivate)
7986 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective());
7987 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
7988 continue;
7989 }
7990 }
7991 }
7992
7993 // Variably modified types are not supported for tasks.
7994 if (!Type->isAnyPointerType() && Type->isVariablyModifiedType() &&
7995 isOpenMPTaskingDirective(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) {
7996 Diag(ELoc, diag::err_omp_variably_modified_type_not_supported)
7997 << getOpenMPClauseName(OMPC_firstprivate) << Type
7998 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective());
7999 bool IsDecl =
8000 !VD ||
8001 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
8002 Diag(D->getLocation(),
8003 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
8004 << D;
8005 continue;
8006 }
8007
8008 Type = Type.getUnqualifiedType();
8009 auto VDPrivate = buildVarDecl(*this, ELoc, Type, D->getName(),
8010 D->hasAttrs() ? &D->getAttrs() : nullptr);
8011 // Generate helper private variable and initialize it with the value of the
8012 // original variable. The address of the original variable is replaced by
8013 // the address of the new private variable in the CodeGen. This new variable
8014 // is not added to IdResolver, so the code in the OpenMP region uses
8015 // original variable for proper diagnostics and variable capturing.
8016 Expr *VDInitRefExpr = nullptr;
8017 // For arrays generate initializer for single element and replace it by the
8018 // original array element in CodeGen.
8019 if (Type->isArrayType()) {
8020 auto VDInit =
8021 buildVarDecl(*this, RefExpr->getExprLoc(), ElemType, D->getName());
8022 VDInitRefExpr = buildDeclRefExpr(*this, VDInit, ElemType, ELoc);
8023 auto Init = DefaultLvalueConversion(VDInitRefExpr).get();
8024 ElemType = ElemType.getUnqualifiedType();
8025 auto *VDInitTemp = buildVarDecl(*this, RefExpr->getExprLoc(), ElemType,
8026 ".firstprivate.temp");
8027 InitializedEntity Entity =
8028 InitializedEntity::InitializeVariable(VDInitTemp);
8029 InitializationKind Kind = InitializationKind::CreateCopy(ELoc, ELoc);
8030
8031 InitializationSequence InitSeq(*this, Entity, Kind, Init);
8032 ExprResult Result = InitSeq.Perform(*this, Entity, Kind, Init);
8033 if (Result.isInvalid())
8034 VDPrivate->setInvalidDecl();
8035 else
8036 VDPrivate->setInit(Result.getAs<Expr>());
8037 // Remove temp variable declaration.
8038 Context.Deallocate(VDInitTemp);
8039 } else {
8040 auto *VDInit = buildVarDecl(*this, RefExpr->getExprLoc(), Type,
8041 ".firstprivate.temp");
8042 VDInitRefExpr = buildDeclRefExpr(*this, VDInit, RefExpr->getType(),
8043 RefExpr->getExprLoc());
8044 AddInitializerToDecl(VDPrivate,
8045 DefaultLvalueConversion(VDInitRefExpr).get(),
8046 /*DirectInit=*/false, /*TypeMayContainAuto=*/false);
8047 }
8048 if (VDPrivate->isInvalidDecl()) {
8049 if (IsImplicitClause) {
8050 Diag(RefExpr->getExprLoc(),
8051 diag::note_omp_task_predetermined_firstprivate_here);
8052 }
8053 continue;
8054 }
8055 CurContext->addDecl(VDPrivate);
8056 auto VDPrivateRefExpr = buildDeclRefExpr(
8057 *this, VDPrivate, RefExpr->getType().getUnqualifiedType(),
8058 RefExpr->getExprLoc());
8059 DeclRefExpr *Ref = nullptr;
8060 if (!VD) {
8061 if (TopDVar.CKind == OMPC_lastprivate)
8062 Ref = TopDVar.PrivateCopy;
8063 else {
8064 Ref = buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/true);
8065 if (!IsOpenMPCapturedDecl(D))
8066 ExprCaptures.push_back(Ref->getDecl());
8067 }
8068 }
8069 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(D, RefExpr->IgnoreParens(), OMPC_firstprivate, Ref);
8070 Vars.push_back(VD ? RefExpr->IgnoreParens() : Ref);
8071 PrivateCopies.push_back(VDPrivateRefExpr);
8072 Inits.push_back(VDInitRefExpr);
8073 }
8074
8075 if (Vars.empty())
8076 return nullptr;
8077
8078 return OMPFirstprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc,
8079 Vars, PrivateCopies, Inits,
8080 buildPreInits(Context, ExprCaptures));
8081}
8082
8083OMPClause *Sema::ActOnOpenMPLastprivateClause(ArrayRef<Expr *> VarList,
8084 SourceLocation StartLoc,
8085 SourceLocation LParenLoc,
8086 SourceLocation EndLoc) {
8087 SmallVector<Expr *, 8> Vars;
8088 SmallVector<Expr *, 8> SrcExprs;
8089 SmallVector<Expr *, 8> DstExprs;
8090 SmallVector<Expr *, 8> AssignmentOps;
8091 SmallVector<Decl *, 4> ExprCaptures;
8092 SmallVector<Expr *, 4> ExprPostUpdates;
8093 for (auto &RefExpr : VarList) {
8094 assert(RefExpr && "NULL expr in OpenMP lastprivate clause.")((RefExpr && "NULL expr in OpenMP lastprivate clause."
) ? static_cast<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP lastprivate clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 8094, __PRETTY_FUNCTION__));
8095 SourceLocation ELoc;
8096 SourceRange ERange;
8097 Expr *SimpleRefExpr = RefExpr;
8098 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange);
8099 if (Res.second) {
8100 // It will be analyzed later.
8101 Vars.push_back(RefExpr);
8102 SrcExprs.push_back(nullptr);
8103 DstExprs.push_back(nullptr);
8104 AssignmentOps.push_back(nullptr);
8105 }
8106 ValueDecl *D = Res.first;
8107 if (!D)
8108 continue;
8109
8110 QualType Type = D->getType();
8111 auto *VD = dyn_cast<VarDecl>(D);
8112
8113 // OpenMP [2.14.3.5, Restrictions, C/C++, p.2]
8114 // A variable that appears in a lastprivate clause must not have an
8115 // incomplete type or a reference type.
8116 if (RequireCompleteType(ELoc, Type,
8117 diag::err_omp_lastprivate_incomplete_type))
8118 continue;
8119 Type = Type.getNonReferenceType();
8120
8121 // OpenMP [2.14.1.1, Data-sharing Attribute Rules for Variables Referenced
8122 // in a Construct]
8123 // Variables with the predetermined data-sharing attributes may not be
8124 // listed in data-sharing attributes clauses, except for the cases
8125 // listed below.
8126 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
8127 if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_lastprivate &&
8128 DVar.CKind != OMPC_firstprivate &&
8129 (DVar.CKind != OMPC_private || DVar.RefExpr != nullptr)) {
8130 Diag(ELoc, diag::err_omp_wrong_dsa)
8131 << getOpenMPClauseName(DVar.CKind)
8132 << getOpenMPClauseName(OMPC_lastprivate);
8133 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
8134 continue;
8135 }
8136
8137 OpenMPDirectiveKind CurrDir = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective();
8138 // OpenMP [2.14.3.5, Restrictions, p.2]
8139 // A list item that is private within a parallel region, or that appears in
8140 // the reduction clause of a parallel construct, must not appear in a
8141 // lastprivate clause on a worksharing construct if any of the corresponding
8142 // worksharing regions ever binds to any of the corresponding parallel
8143 // regions.
8144 DSAStackTy::DSAVarData TopDVar = DVar;
8145 if (isOpenMPWorksharingDirective(CurrDir) &&
8146 !isOpenMPParallelDirective(CurrDir)) {
8147 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getImplicitDSA(D, true);
8148 if (DVar.CKind != OMPC_shared) {
8149 Diag(ELoc, diag::err_omp_required_access)
8150 << getOpenMPClauseName(OMPC_lastprivate)
8151 << getOpenMPClauseName(OMPC_shared);
8152 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
8153 continue;
8154 }
8155 }
8156
8157 // OpenMP 4.5 [2.10.8, Distribute Construct, p.3]
8158 // A list item may appear in a firstprivate or lastprivate clause but not
8159 // both.
8160 if (CurrDir == OMPD_distribute) {
8161 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
8162 if (DVar.CKind == OMPC_firstprivate) {
8163 Diag(ELoc, diag::err_omp_firstprivate_and_lastprivate_in_distribute);
8164 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
8165 continue;
8166 }
8167 }
8168
8169 // OpenMP [2.14.3.5, Restrictions, C++, p.1,2]
8170 // A variable of class type (or array thereof) that appears in a
8171 // lastprivate clause requires an accessible, unambiguous default
8172 // constructor for the class type, unless the list item is also specified
8173 // in a firstprivate clause.
8174 // A variable of class type (or array thereof) that appears in a
8175 // lastprivate clause requires an accessible, unambiguous copy assignment
8176 // operator for the class type.
8177 Type = Context.getBaseElementType(Type).getNonReferenceType();
8178 auto *SrcVD = buildVarDecl(*this, ERange.getBegin(),
8179 Type.getUnqualifiedType(), ".lastprivate.src",
8180 D->hasAttrs() ? &D->getAttrs() : nullptr);
8181 auto *PseudoSrcExpr =
8182 buildDeclRefExpr(*this, SrcVD, Type.getUnqualifiedType(), ELoc);
8183 auto *DstVD =
8184 buildVarDecl(*this, ERange.getBegin(), Type, ".lastprivate.dst",
8185 D->hasAttrs() ? &D->getAttrs() : nullptr);
8186 auto *PseudoDstExpr = buildDeclRefExpr(*this, DstVD, Type, ELoc);
8187 // For arrays generate assignment operation for single element and replace
8188 // it by the original array element in CodeGen.
8189 auto AssignmentOp = BuildBinOp(/*S=*/nullptr, ELoc, BO_Assign,
8190 PseudoDstExpr, PseudoSrcExpr);
8191 if (AssignmentOp.isInvalid())
8192 continue;
8193 AssignmentOp = ActOnFinishFullExpr(AssignmentOp.get(), ELoc,
8194 /*DiscardedValue=*/true);
8195 if (AssignmentOp.isInvalid())
8196 continue;
8197
8198 DeclRefExpr *Ref = nullptr;
8199 if (!VD) {
8200 if (TopDVar.CKind == OMPC_firstprivate)
8201 Ref = TopDVar.PrivateCopy;
8202 else {
8203 Ref = buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/false);
8204 if (!IsOpenMPCapturedDecl(D))
8205 ExprCaptures.push_back(Ref->getDecl());
8206 }
8207 if (TopDVar.CKind == OMPC_firstprivate ||
8208 (!IsOpenMPCapturedDecl(D) &&
8209 Ref->getDecl()->hasAttr<OMPCaptureNoInitAttr>())) {
8210 ExprResult RefRes = DefaultLvalueConversion(Ref);
8211 if (!RefRes.isUsable())
8212 continue;
8213 ExprResult PostUpdateRes =
8214 BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ELoc, BO_Assign, SimpleRefExpr,
8215 RefRes.get());
8216 if (!PostUpdateRes.isUsable())
8217 continue;
8218 ExprPostUpdates.push_back(
8219 IgnoredValueConversions(PostUpdateRes.get()).get());
8220 }
8221 }
8222 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(D, RefExpr->IgnoreParens(), OMPC_lastprivate, Ref);
8223 Vars.push_back(VD ? RefExpr->IgnoreParens() : Ref);
8224 SrcExprs.push_back(PseudoSrcExpr);
8225 DstExprs.push_back(PseudoDstExpr);
8226 AssignmentOps.push_back(AssignmentOp.get());
8227 }
8228
8229 if (Vars.empty())
8230 return nullptr;
8231
8232 return OMPLastprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc,
8233 Vars, SrcExprs, DstExprs, AssignmentOps,
8234 buildPreInits(Context, ExprCaptures),
8235 buildPostUpdate(*this, ExprPostUpdates));
8236}
8237
8238OMPClause *Sema::ActOnOpenMPSharedClause(ArrayRef<Expr *> VarList,
8239 SourceLocation StartLoc,
8240 SourceLocation LParenLoc,
8241 SourceLocation EndLoc) {
8242 SmallVector<Expr *, 8> Vars;
8243 for (auto &RefExpr : VarList) {
1
Assuming '__begin' is not equal to '__end'
→
8244 assert(RefExpr && "NULL expr in OpenMP lastprivate clause.")((RefExpr && "NULL expr in OpenMP lastprivate clause."
) ? static_cast<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP lastprivate clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 8244, __PRETTY_FUNCTION__));
8245 SourceLocation ELoc;
8246 SourceRange ERange;
8247 Expr *SimpleRefExpr = RefExpr;
8248 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange);
8249 if (Res.second) {
2
←
Taking false branch
→
5
←
Taking false branch
→
8
←
Taking false branch
→
11
←
Taking false branch
→
8250 // It will be analyzed later.
8251 Vars.push_back(RefExpr);
8252 }
8253 ValueDecl *D = Res.first;
8254 if (!D)
3
←
Taking true branch
→
6
←
Taking true branch
→
9
←
Taking true branch
→
12
←
Taking false branch
→
8255 continue;
4
←
 Execution continues on line 8243
→
7
←
 Execution continues on line 8243
→
10
←
 Execution continues on line 8243
→
8256
8257 auto *VD = dyn_cast<VarDecl>(D);
8258 // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced
8259 // in a Construct]
8260 // Variables with the predetermined data-sharing attributes may not be
8261 // listed in data-sharing attributes clauses, except for the cases
8262 // listed below. For these exceptions only, listing a predetermined
8263 // variable in a data-sharing attribute clause is allowed and overrides
8264 // the variable's predetermined data-sharing attributes.
8265 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
8266 if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_shared &&
8267 DVar.RefExpr) {
8268 Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind)
8269 << getOpenMPClauseName(OMPC_shared);
8270 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
8271 continue;
8272 }
8273
8274 DeclRefExpr *Ref = nullptr;
8275 if (!VD && IsOpenMPCapturedDecl(D))
13
←
Assuming 'VD' is null
→
14
←
Taking true branch
→
8276 Ref = buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/true);
15
←
Calling 'buildCapture'
→
8277 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(D, RefExpr->IgnoreParens(), OMPC_shared, Ref);
8278 Vars.push_back((VD || !Ref) ? RefExpr->IgnoreParens() : Ref);
8279 }
8280
8281 if (Vars.empty())
8282 return nullptr;
8283
8284 return OMPSharedClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars);
8285}
8286
8287namespace {
8288class DSARefChecker : public StmtVisitor<DSARefChecker, bool> {
8289 DSAStackTy *Stack;
8290
8291public:
8292 bool VisitDeclRefExpr(DeclRefExpr *E) {
8293 if (VarDecl *VD = dyn_cast<VarDecl>(E->getDecl())) {
8294 DSAStackTy::DSAVarData DVar = Stack->getTopDSA(VD, false);
8295 if (DVar.CKind == OMPC_shared && !DVar.RefExpr)
8296 return false;
8297 if (DVar.CKind != OMPC_unknown)
8298 return true;
8299 DSAStackTy::DSAVarData DVarPrivate = Stack->hasDSA(
8300 VD, isOpenMPPrivate, [](OpenMPDirectiveKind) -> bool { return true; },
8301 false);
8302 if (DVarPrivate.CKind != OMPC_unknown)
8303 return true;
8304 return false;
8305 }
8306 return false;
8307 }
8308 bool VisitStmt(Stmt *S) {
8309 for (auto Child : S->children()) {
8310 if (Child && Visit(Child))
8311 return true;
8312 }
8313 return false;
8314 }
8315 explicit DSARefChecker(DSAStackTy *S) : Stack(S) {}
8316};
8317} // namespace
8318
8319namespace {
8320// Transform MemberExpression for specified FieldDecl of current class to
8321// DeclRefExpr to specified OMPCapturedExprDecl.
8322class TransformExprToCaptures : public TreeTransform<TransformExprToCaptures> {
8323 typedef TreeTransform<TransformExprToCaptures> BaseTransform;
8324 ValueDecl *Field;
8325 DeclRefExpr *CapturedExpr;
8326
8327public:
8328 TransformExprToCaptures(Sema &SemaRef, ValueDecl *FieldDecl)
8329 : BaseTransform(SemaRef), Field(FieldDecl), CapturedExpr(nullptr) {}
8330
8331 ExprResult TransformMemberExpr(MemberExpr *E) {
8332 if (isa<CXXThisExpr>(E->getBase()->IgnoreParenImpCasts()) &&
8333 E->getMemberDecl() == Field) {
8334 CapturedExpr = buildCapture(SemaRef, Field, E, /*WithInit=*/false);
8335 return CapturedExpr;
8336 }
8337 return BaseTransform::TransformMemberExpr(E);
8338 }
8339 DeclRefExpr *getCapturedExpr() { return CapturedExpr; }
8340};
8341} // namespace
8342
8343template <typename T>
8344static T filterLookupForUDR(SmallVectorImpl<UnresolvedSet<8>> &Lookups,
8345 const llvm::function_ref<T(ValueDecl *)> &Gen) {
8346 for (auto &Set : Lookups) {
8347 for (auto *D : Set) {
8348 if (auto Res = Gen(cast<ValueDecl>(D)))
8349 return Res;
8350 }
8351 }
8352 return T();
8353}
8354
8355static ExprResult
8356buildDeclareReductionRef(Sema &SemaRef, SourceLocation Loc, SourceRange Range,
8357 Scope *S, CXXScopeSpec &ReductionIdScopeSpec,
8358 const DeclarationNameInfo &ReductionId, QualType Ty,
8359 CXXCastPath &BasePath, Expr *UnresolvedReduction) {
8360 if (ReductionIdScopeSpec.isInvalid())
8361 return ExprError();
8362 SmallVector<UnresolvedSet<8>, 4> Lookups;
8363 if (S) {
8364 LookupResult Lookup(SemaRef, ReductionId, Sema::LookupOMPReductionName);
8365 Lookup.suppressDiagnostics();
8366 while (S && SemaRef.LookupParsedName(Lookup, S, &ReductionIdScopeSpec)) {
8367 auto *D = Lookup.getRepresentativeDecl();
8368 do {
8369 S = S->getParent();
8370 } while (S && !S->isDeclScope(D));
8371 if (S)
8372 S = S->getParent();
8373 Lookups.push_back(UnresolvedSet<8>());
8374 Lookups.back().append(Lookup.begin(), Lookup.end());
8375 Lookup.clear();
8376 }
8377 } else if (auto *ULE =
8378 cast_or_null<UnresolvedLookupExpr>(UnresolvedReduction)) {
8379 Lookups.push_back(UnresolvedSet<8>());
8380 Decl *PrevD = nullptr;
8381 for(auto *D : ULE->decls()) {
8382 if (D == PrevD)
8383 Lookups.push_back(UnresolvedSet<8>());
8384 else if (auto *DRD = cast<OMPDeclareReductionDecl>(D))
8385 Lookups.back().addDecl(DRD);
8386 PrevD = D;
8387 }
8388 }
8389 if (Ty->isDependentType() || Ty->isInstantiationDependentType() ||
8390 Ty->containsUnexpandedParameterPack() ||
8391 filterLookupForUDR<bool>(Lookups, [](ValueDecl *D) -> bool {
8392 return !D->isInvalidDecl() &&
8393 (D->getType()->isDependentType() ||
8394 D->getType()->isInstantiationDependentType() ||
8395 D->getType()->containsUnexpandedParameterPack());
8396 })) {
8397 UnresolvedSet<8> ResSet;
8398 for (auto &Set : Lookups) {
8399 ResSet.append(Set.begin(), Set.end());
8400 // The last item marks the end of all declarations at the specified scope.
8401 ResSet.addDecl(Set[Set.size() - 1]);
8402 }
8403 return UnresolvedLookupExpr::Create(
8404 SemaRef.Context, /*NamingClass=*/nullptr,
8405 ReductionIdScopeSpec.getWithLocInContext(SemaRef.Context), ReductionId,
8406 /*ADL=*/true, /*Overloaded=*/true, ResSet.begin(), ResSet.end());
8407 }
8408 if (auto *VD = filterLookupForUDR<ValueDecl *>(
8409 Lookups, [&SemaRef, Ty](ValueDecl *D) -> ValueDecl * {
8410 if (!D->isInvalidDecl() &&
8411 SemaRef.Context.hasSameType(D->getType(), Ty))
8412 return D;
8413 return nullptr;
8414 }))
8415 return SemaRef.BuildDeclRefExpr(VD, Ty, VK_LValue, Loc);
8416 if (auto *VD = filterLookupForUDR<ValueDecl *>(
8417 Lookups, [&SemaRef, Ty, Loc](ValueDecl *D) -> ValueDecl * {
8418 if (!D->isInvalidDecl() &&
8419 SemaRef.IsDerivedFrom(Loc, Ty, D->getType()) &&
8420 !Ty.isMoreQualifiedThan(D->getType()))
8421 return D;
8422 return nullptr;
8423 })) {
8424 CXXBasePaths Paths(/*FindAmbiguities=*/true, /*RecordPaths=*/true,
8425 /*DetectVirtual=*/false);
8426 if (SemaRef.IsDerivedFrom(Loc, Ty, VD->getType(), Paths)) {
8427 if (!Paths.isAmbiguous(SemaRef.Context.getCanonicalType(
8428 VD->getType().getUnqualifiedType()))) {
8429 if (SemaRef.CheckBaseClassAccess(Loc, VD->getType(), Ty, Paths.front(),
8430 /*DiagID=*/0) !=
8431 Sema::AR_inaccessible) {
8432 SemaRef.BuildBasePathArray(Paths, BasePath);
8433 return SemaRef.BuildDeclRefExpr(VD, Ty, VK_LValue, Loc);
8434 }
8435 }
8436 }
8437 }
8438 if (ReductionIdScopeSpec.isSet()) {
8439 SemaRef.Diag(Loc, diag::err_omp_not_resolved_reduction_identifier) << Range;
8440 return ExprError();
8441 }
8442 return ExprEmpty();
8443}
8444
8445OMPClause *Sema::ActOnOpenMPReductionClause(
8446 ArrayRef<Expr *> VarList, SourceLocation StartLoc, SourceLocation LParenLoc,
8447 SourceLocation ColonLoc, SourceLocation EndLoc,
8448 CXXScopeSpec &ReductionIdScopeSpec, const DeclarationNameInfo &ReductionId,
8449 ArrayRef<Expr *> UnresolvedReductions) {
8450 auto DN = ReductionId.getName();
8451 auto OOK = DN.getCXXOverloadedOperator();
8452 BinaryOperatorKind BOK = BO_Comma;
8453
8454 // OpenMP [2.14.3.6, reduction clause]
8455 // C
8456 // reduction-identifier is either an identifier or one of the following
8457 // operators: +, -, *, &, |, ^, && and ||
8458 // C++
8459 // reduction-identifier is either an id-expression or one of the following
8460 // operators: +, -, *, &, |, ^, && and ||
8461 // FIXME: Only 'min' and 'max' identifiers are supported for now.
8462 switch (OOK) {
8463 case OO_Plus:
8464 case OO_Minus:
8465 BOK = BO_Add;
8466 break;
8467 case OO_Star:
8468 BOK = BO_Mul;
8469 break;
8470 case OO_Amp:
8471 BOK = BO_And;
8472 break;
8473 case OO_Pipe:
8474 BOK = BO_Or;
8475 break;
8476 case OO_Caret:
8477 BOK = BO_Xor;
8478 break;
8479 case OO_AmpAmp:
8480 BOK = BO_LAnd;
8481 break;
8482 case OO_PipePipe:
8483 BOK = BO_LOr;
8484 break;
8485 case OO_New:
8486 case OO_Delete:
8487 case OO_Array_New:
8488 case OO_Array_Delete:
8489 case OO_Slash:
8490 case OO_Percent:
8491 case OO_Tilde:
8492 case OO_Exclaim:
8493 case OO_Equal:
8494 case OO_Less:
8495 case OO_Greater:
8496 case OO_LessEqual:
8497 case OO_GreaterEqual:
8498 case OO_PlusEqual:
8499 case OO_MinusEqual:
8500 case OO_StarEqual:
8501 case OO_SlashEqual:
8502 case OO_PercentEqual:
8503 case OO_CaretEqual:
8504 case OO_AmpEqual:
8505 case OO_PipeEqual:
8506 case OO_LessLess:
8507 case OO_GreaterGreater:
8508 case OO_LessLessEqual:
8509 case OO_GreaterGreaterEqual:
8510 case OO_EqualEqual:
8511 case OO_ExclaimEqual:
8512 case OO_PlusPlus:
8513 case OO_MinusMinus:
8514 case OO_Comma:
8515 case OO_ArrowStar:
8516 case OO_Arrow:
8517 case OO_Call:
8518 case OO_Subscript:
8519 case OO_Conditional:
8520 case OO_Coawait:
8521 case NUM_OVERLOADED_OPERATORS:
8522 llvm_unreachable("Unexpected reduction identifier")::llvm::llvm_unreachable_internal("Unexpected reduction identifier"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 8522);
8523 case OO_None:
8524 if (auto II = DN.getAsIdentifierInfo()) {
8525 if (II->isStr("max"))
8526 BOK = BO_GT;
8527 else if (II->isStr("min"))
8528 BOK = BO_LT;
8529 }
8530 break;
8531 }
8532 SourceRange ReductionIdRange;
8533 if (ReductionIdScopeSpec.isValid())
8534 ReductionIdRange.setBegin(ReductionIdScopeSpec.getBeginLoc());
8535 ReductionIdRange.setEnd(ReductionId.getEndLoc());
8536
8537 SmallVector<Expr *, 8> Vars;
8538 SmallVector<Expr *, 8> Privates;
8539 SmallVector<Expr *, 8> LHSs;
8540 SmallVector<Expr *, 8> RHSs;
8541 SmallVector<Expr *, 8> ReductionOps;
8542 SmallVector<Decl *, 4> ExprCaptures;
8543 SmallVector<Expr *, 4> ExprPostUpdates;
8544 auto IR = UnresolvedReductions.begin(), ER = UnresolvedReductions.end();
8545 bool FirstIter = true;
8546 for (auto RefExpr : VarList) {
8547 assert(RefExpr && "nullptr expr in OpenMP reduction clause.")((RefExpr && "nullptr expr in OpenMP reduction clause."
) ? static_cast<void> (0) : __assert_fail ("RefExpr && \"nullptr expr in OpenMP reduction clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 8547, __PRETTY_FUNCTION__));
8548 // OpenMP [2.1, C/C++]
8549 // A list item is a variable or array section, subject to the restrictions
8550 // specified in Section 2.4 on page 42 and in each of the sections
8551 // describing clauses and directives for which a list appears.
8552 // OpenMP [2.14.3.3, Restrictions, p.1]
8553 // A variable that is part of another variable (as an array or
8554 // structure element) cannot appear in a private clause.
8555 if (!FirstIter && IR != ER)
8556 ++IR;
8557 FirstIter = false;
8558 SourceLocation ELoc;
8559 SourceRange ERange;
8560 Expr *SimpleRefExpr = RefExpr;
8561 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange,
8562 /*AllowArraySection=*/true);
8563 if (Res.second) {
8564 // It will be analyzed later.
8565 Vars.push_back(RefExpr);
8566 Privates.push_back(nullptr);
8567 LHSs.push_back(nullptr);
8568 RHSs.push_back(nullptr);
8569 // Try to find 'declare reduction' corresponding construct before using
8570 // builtin/overloaded operators.
8571 QualType Type = Context.DependentTy;
8572 CXXCastPath BasePath;
8573 ExprResult DeclareReductionRef = buildDeclareReductionRef(
8574 *this, ELoc, ERange, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ReductionIdScopeSpec,
8575 ReductionId, Type, BasePath, IR == ER ? nullptr : *IR);
8576 if (CurContext->isDependentContext() &&
8577 (DeclareReductionRef.isUnset() ||
8578 isa<UnresolvedLookupExpr>(DeclareReductionRef.get())))
8579 ReductionOps.push_back(DeclareReductionRef.get());
8580 else
8581 ReductionOps.push_back(nullptr);
8582 }
8583 ValueDecl *D = Res.first;
8584 if (!D)
8585 continue;
8586
8587 QualType Type;
8588 auto *ASE = dyn_cast<ArraySubscriptExpr>(RefExpr->IgnoreParens());
8589 auto *OASE = dyn_cast<OMPArraySectionExpr>(RefExpr->IgnoreParens());
8590 if (ASE)
8591 Type = ASE->getType().getNonReferenceType();
8592 else if (OASE) {
8593 auto BaseType = OMPArraySectionExpr::getBaseOriginalType(OASE->getBase());
8594 if (auto *ATy = BaseType->getAsArrayTypeUnsafe())
8595 Type = ATy->getElementType();
8596 else
8597 Type = BaseType->getPointeeType();
8598 Type = Type.getNonReferenceType();
8599 } else
8600 Type = Context.getBaseElementType(D->getType().getNonReferenceType());
8601 auto *VD = dyn_cast<VarDecl>(D);
8602
8603 // OpenMP [2.9.3.3, Restrictions, C/C++, p.3]
8604 // A variable that appears in a private clause must not have an incomplete
8605 // type or a reference type.
8606 if (RequireCompleteType(ELoc, Type,
8607 diag::err_omp_reduction_incomplete_type))
8608 continue;
8609 // OpenMP [2.14.3.6, reduction clause, Restrictions]
8610 // A list item that appears in a reduction clause must not be
8611 // const-qualified.
8612 if (Type.getNonReferenceType().isConstant(Context)) {
8613 Diag(ELoc, diag::err_omp_const_reduction_list_item)
8614 << getOpenMPClauseName(OMPC_reduction) << Type << ERange;
8615 if (!ASE && !OASE) {
8616 bool IsDecl = !VD ||
8617 VD->isThisDeclarationADefinition(Context) ==
8618 VarDecl::DeclarationOnly;
8619 Diag(D->getLocation(),
8620 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
8621 << D;
8622 }
8623 continue;
8624 }
8625 // OpenMP [2.9.3.6, Restrictions, C/C++, p.4]
8626 // If a list-item is a reference type then it must bind to the same object
8627 // for all threads of the team.
8628 if (!ASE && !OASE && VD) {
8629 VarDecl *VDDef = VD->getDefinition();
8630 if (VD->getType()->isReferenceType() && VDDef) {
8631 DSARefChecker Check(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
));
8632 if (Check.Visit(VDDef->getInit())) {
8633 Diag(ELoc, diag::err_omp_reduction_ref_type_arg) << ERange;
8634 Diag(VDDef->getLocation(), diag::note_defined_here) << VDDef;
8635 continue;
8636 }
8637 }
8638 }
8639
8640 // OpenMP [2.14.1.1, Data-sharing Attribute Rules for Variables Referenced
8641 // in a Construct]
8642 // Variables with the predetermined data-sharing attributes may not be
8643 // listed in data-sharing attributes clauses, except for the cases
8644 // listed below. For these exceptions only, listing a predetermined
8645 // variable in a data-sharing attribute clause is allowed and overrides
8646 // the variable's predetermined data-sharing attributes.
8647 // OpenMP [2.14.3.6, Restrictions, p.3]
8648 // Any number of reduction clauses can be specified on the directive,
8649 // but a list item can appear only once in the reduction clauses for that
8650 // directive.
8651 DSAStackTy::DSAVarData DVar;
8652 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
8653 if (DVar.CKind == OMPC_reduction) {
8654 Diag(ELoc, diag::err_omp_once_referenced)
8655 << getOpenMPClauseName(OMPC_reduction);
8656 if (DVar.RefExpr)
8657 Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_referenced);
8658 } else if (DVar.CKind != OMPC_unknown) {
8659 Diag(ELoc, diag::err_omp_wrong_dsa)
8660 << getOpenMPClauseName(DVar.CKind)
8661 << getOpenMPClauseName(OMPC_reduction);
8662 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
8663 continue;
8664 }
8665
8666 // OpenMP [2.14.3.6, Restrictions, p.1]
8667 // A list item that appears in a reduction clause of a worksharing
8668 // construct must be shared in the parallel regions to which any of the
8669 // worksharing regions arising from the worksharing construct bind.
8670 OpenMPDirectiveKind CurrDir = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective();
8671 if (isOpenMPWorksharingDirective(CurrDir) &&
8672 !isOpenMPParallelDirective(CurrDir)) {
8673 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getImplicitDSA(D, true);
8674 if (DVar.CKind != OMPC_shared) {
8675 Diag(ELoc, diag::err_omp_required_access)
8676 << getOpenMPClauseName(OMPC_reduction)
8677 << getOpenMPClauseName(OMPC_shared);
8678 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
8679 continue;
8680 }
8681 }
8682
8683 // Try to find 'declare reduction' corresponding construct before using
8684 // builtin/overloaded operators.
8685 CXXCastPath BasePath;
8686 ExprResult DeclareReductionRef = buildDeclareReductionRef(
8687 *this, ELoc, ERange, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ReductionIdScopeSpec,
8688 ReductionId, Type, BasePath, IR == ER ? nullptr : *IR);
8689 if (DeclareReductionRef.isInvalid())
8690 continue;
8691 if (CurContext->isDependentContext() &&
8692 (DeclareReductionRef.isUnset() ||
8693 isa<UnresolvedLookupExpr>(DeclareReductionRef.get()))) {
8694 Vars.push_back(RefExpr);
8695 Privates.push_back(nullptr);
8696 LHSs.push_back(nullptr);
8697 RHSs.push_back(nullptr);
8698 ReductionOps.push_back(DeclareReductionRef.get());
8699 continue;
8700 }
8701 if (BOK == BO_Comma && DeclareReductionRef.isUnset()) {
8702 // Not allowed reduction identifier is found.
8703 Diag(ReductionId.getLocStart(),
8704 diag::err_omp_unknown_reduction_identifier)
8705 << Type << ReductionIdRange;
8706 continue;
8707 }
8708
8709 // OpenMP [2.14.3.6, reduction clause, Restrictions]
8710 // The type of a list item that appears in a reduction clause must be valid
8711 // for the reduction-identifier. For a max or min reduction in C, the type
8712 // of the list item must be an allowed arithmetic data type: char, int,
8713 // float, double, or _Bool, possibly modified with long, short, signed, or
8714 // unsigned. For a max or min reduction in C++, the type of the list item
8715 // must be an allowed arithmetic data type: char, wchar_t, int, float,
8716 // double, or bool, possibly modified with long, short, signed, or unsigned.
8717 if (DeclareReductionRef.isUnset()) {
8718 if ((BOK == BO_GT || BOK == BO_LT) &&
8719 !(Type->isScalarType() ||
8720 (getLangOpts().CPlusPlus && Type->isArithmeticType()))) {
8721 Diag(ELoc, diag::err_omp_clause_not_arithmetic_type_arg)
8722 << getLangOpts().CPlusPlus;
8723 if (!ASE && !OASE) {
8724 bool IsDecl = !VD ||
8725 VD->isThisDeclarationADefinition(Context) ==
8726 VarDecl::DeclarationOnly;
8727 Diag(D->getLocation(),
8728 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
8729 << D;
8730 }
8731 continue;
8732 }
8733 if ((BOK == BO_OrAssign || BOK == BO_AndAssign || BOK == BO_XorAssign) &&
8734 !getLangOpts().CPlusPlus && Type->isFloatingType()) {
8735 Diag(ELoc, diag::err_omp_clause_floating_type_arg);
8736 if (!ASE && !OASE) {
8737 bool IsDecl = !VD ||
8738 VD->isThisDeclarationADefinition(Context) ==
8739 VarDecl::DeclarationOnly;
8740 Diag(D->getLocation(),
8741 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
8742 << D;
8743 }
8744 continue;
8745 }
8746 }
8747
8748 Type = Type.getNonLValueExprType(Context).getUnqualifiedType();
8749 auto *LHSVD = buildVarDecl(*this, ELoc, Type, ".reduction.lhs",
8750 D->hasAttrs() ? &D->getAttrs() : nullptr);
8751 auto *RHSVD = buildVarDecl(*this, ELoc, Type, D->getName(),
8752 D->hasAttrs() ? &D->getAttrs() : nullptr);
8753 auto PrivateTy = Type;
8754 if (OASE ||
8755 (!ASE &&
8756 D->getType().getNonReferenceType()->isVariablyModifiedType())) {
8757 // For arays/array sections only:
8758 // Create pseudo array type for private copy. The size for this array will
8759 // be generated during codegen.
8760 // For array subscripts or single variables Private Ty is the same as Type
8761 // (type of the variable or single array element).
8762 PrivateTy = Context.getVariableArrayType(
8763 Type, new (Context) OpaqueValueExpr(SourceLocation(),
8764 Context.getSizeType(), VK_RValue),
8765 ArrayType::Normal, /*IndexTypeQuals=*/0, SourceRange());
8766 } else if (!ASE && !OASE &&
8767 Context.getAsArrayType(D->getType().getNonReferenceType()))
8768 PrivateTy = D->getType().getNonReferenceType();
8769 // Private copy.
8770 auto *PrivateVD = buildVarDecl(*this, ELoc, PrivateTy, D->getName(),
8771 D->hasAttrs() ? &D->getAttrs() : nullptr);
8772 // Add initializer for private variable.
8773 Expr *Init = nullptr;
8774 auto *LHSDRE = buildDeclRefExpr(*this, LHSVD, Type, ELoc);
8775 auto *RHSDRE = buildDeclRefExpr(*this, RHSVD, Type, ELoc);
8776 if (DeclareReductionRef.isUsable()) {
8777 auto *DRDRef = DeclareReductionRef.getAs<DeclRefExpr>();
8778 auto *DRD = cast<OMPDeclareReductionDecl>(DRDRef->getDecl());
8779 if (DRD->getInitializer()) {
8780 Init = DRDRef;
8781 RHSVD->setInit(DRDRef);
8782 RHSVD->setInitStyle(VarDecl::CallInit);
8783 }
8784 } else {
8785 switch (BOK) {
8786 case BO_Add:
8787 case BO_Xor:
8788 case BO_Or:
8789 case BO_LOr:
8790 // '+', '-', '^', '|', '||' reduction ops - initializer is '0'.
8791 if (Type->isScalarType() || Type->isAnyComplexType())
8792 Init = ActOnIntegerConstant(ELoc, /*Val=*/0).get();
8793 break;
8794 case BO_Mul:
8795 case BO_LAnd:
8796 if (Type->isScalarType() || Type->isAnyComplexType()) {
8797 // '*' and '&&' reduction ops - initializer is '1'.
8798 Init = ActOnIntegerConstant(ELoc, /*Val=*/1).get();
8799 }
8800 break;
8801 case BO_And: {
8802 // '&' reduction op - initializer is '~0'.
8803 QualType OrigType = Type;
8804 if (auto *ComplexTy = OrigType->getAs<ComplexType>())
8805 Type = ComplexTy->getElementType();
8806 if (Type->isRealFloatingType()) {
8807 llvm::APFloat InitValue =
8808 llvm::APFloat::getAllOnesValue(Context.getTypeSize(Type),
8809 /*isIEEE=*/true);
8810 Init = FloatingLiteral::Create(Context, InitValue, /*isexact=*/true,
8811 Type, ELoc);
8812 } else if (Type->isScalarType()) {
8813 auto Size = Context.getTypeSize(Type);
8814 QualType IntTy = Context.getIntTypeForBitwidth(Size, /*Signed=*/0);
8815 llvm::APInt InitValue = llvm::APInt::getAllOnesValue(Size);
8816 Init = IntegerLiteral::Create(Context, InitValue, IntTy, ELoc);
8817 }
8818 if (Init && OrigType->isAnyComplexType()) {
8819 // Init = 0xFFFF + 0xFFFFi;
8820 auto *Im = new (Context) ImaginaryLiteral(Init, OrigType);
8821 Init = CreateBuiltinBinOp(ELoc, BO_Add, Init, Im).get();
8822 }
8823 Type = OrigType;
8824 break;
8825 }
8826 case BO_LT:
8827 case BO_GT: {
8828 // 'min' reduction op - initializer is 'Largest representable number in
8829 // the reduction list item type'.
8830 // 'max' reduction op - initializer is 'Least representable number in
8831 // the reduction list item type'.
8832 if (Type->isIntegerType() || Type->isPointerType()) {
8833 bool IsSigned = Type->hasSignedIntegerRepresentation();
8834 auto Size = Context.getTypeSize(Type);
8835 QualType IntTy =
8836 Context.getIntTypeForBitwidth(Size, /*Signed=*/IsSigned);
8837 llvm::APInt InitValue =
8838 (BOK != BO_LT)
8839 ? IsSigned ? llvm::APInt::getSignedMinValue(Size)
8840 : llvm::APInt::getMinValue(Size)
8841 : IsSigned ? llvm::APInt::getSignedMaxValue(Size)
8842 : llvm::APInt::getMaxValue(Size);
8843 Init = IntegerLiteral::Create(Context, InitValue, IntTy, ELoc);
8844 if (Type->isPointerType()) {
8845 // Cast to pointer type.
8846 auto CastExpr = BuildCStyleCastExpr(
8847 SourceLocation(), Context.getTrivialTypeSourceInfo(Type, ELoc),
8848 SourceLocation(), Init);
8849 if (CastExpr.isInvalid())
8850 continue;
8851 Init = CastExpr.get();
8852 }
8853 } else if (Type->isRealFloatingType()) {
8854 llvm::APFloat InitValue = llvm::APFloat::getLargest(
8855 Context.getFloatTypeSemantics(Type), BOK != BO_LT);
8856 Init = FloatingLiteral::Create(Context, InitValue, /*isexact=*/true,
8857 Type, ELoc);
8858 }
8859 break;
8860 }
8861 case BO_PtrMemD:
8862 case BO_PtrMemI:
8863 case BO_MulAssign:
8864 case BO_Div:
8865 case BO_Rem:
8866 case BO_Sub:
8867 case BO_Shl:
8868 case BO_Shr:
8869 case BO_LE:
8870 case BO_GE:
8871 case BO_EQ:
8872 case BO_NE:
8873 case BO_AndAssign:
8874 case BO_XorAssign:
8875 case BO_OrAssign:
8876 case BO_Assign:
8877 case BO_AddAssign:
8878 case BO_SubAssign:
8879 case BO_DivAssign:
8880 case BO_RemAssign:
8881 case BO_ShlAssign:
8882 case BO_ShrAssign:
8883 case BO_Comma:
8884 llvm_unreachable("Unexpected reduction operation")::llvm::llvm_unreachable_internal("Unexpected reduction operation"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 8884);
8885 }
8886 }
8887 if (Init && DeclareReductionRef.isUnset()) {
8888 AddInitializerToDecl(RHSVD, Init, /*DirectInit=*/false,
8889 /*TypeMayContainAuto=*/false);
8890 } else if (!Init)
8891 ActOnUninitializedDecl(RHSVD, /*TypeMayContainAuto=*/false);
8892 if (RHSVD->isInvalidDecl())
8893 continue;
8894 if (!RHSVD->hasInit() && DeclareReductionRef.isUnset()) {
8895 Diag(ELoc, diag::err_omp_reduction_id_not_compatible) << Type
8896 << ReductionIdRange;
8897 bool IsDecl =
8898 !VD ||
8899 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
8900 Diag(D->getLocation(),
8901 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
8902 << D;
8903 continue;
8904 }
8905 // Store initializer for single element in private copy. Will be used during
8906 // codegen.
8907 PrivateVD->setInit(RHSVD->getInit());
8908 PrivateVD->setInitStyle(RHSVD->getInitStyle());
8909 auto *PrivateDRE = buildDeclRefExpr(*this, PrivateVD, PrivateTy, ELoc);
8910 ExprResult ReductionOp;
8911 if (DeclareReductionRef.isUsable()) {
8912 QualType RedTy = DeclareReductionRef.get()->getType();
8913 QualType PtrRedTy = Context.getPointerType(RedTy);
8914 ExprResult LHS = CreateBuiltinUnaryOp(ELoc, UO_AddrOf, LHSDRE);
8915 ExprResult RHS = CreateBuiltinUnaryOp(ELoc, UO_AddrOf, RHSDRE);
8916 if (!BasePath.empty()) {
8917 LHS = DefaultLvalueConversion(LHS.get());
8918 RHS = DefaultLvalueConversion(RHS.get());
8919 LHS = ImplicitCastExpr::Create(Context, PtrRedTy,
8920 CK_UncheckedDerivedToBase, LHS.get(),
8921 &BasePath, LHS.get()->getValueKind());
8922 RHS = ImplicitCastExpr::Create(Context, PtrRedTy,
8923 CK_UncheckedDerivedToBase, RHS.get(),
8924 &BasePath, RHS.get()->getValueKind());
8925 }
8926 FunctionProtoType::ExtProtoInfo EPI;
8927 QualType Params[] = {PtrRedTy, PtrRedTy};
8928 QualType FnTy = Context.getFunctionType(Context.VoidTy, Params, EPI);
8929 auto *OVE = new (Context) OpaqueValueExpr(
8930 ELoc, Context.getPointerType(FnTy), VK_RValue, OK_Ordinary,
8931 DefaultLvalueConversion(DeclareReductionRef.get()).get());
8932 Expr *Args[] = {LHS.get(), RHS.get()};
8933 ReductionOp = new (Context)
8934 CallExpr(Context, OVE, Args, Context.VoidTy, VK_RValue, ELoc);
8935 } else {
8936 ReductionOp = BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(),
8937 ReductionId.getLocStart(), BOK, LHSDRE, RHSDRE);
8938 if (ReductionOp.isUsable()) {
8939 if (BOK != BO_LT && BOK != BO_GT) {
8940 ReductionOp =
8941 BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ReductionId.getLocStart(),
8942 BO_Assign, LHSDRE, ReductionOp.get());
8943 } else {
8944 auto *ConditionalOp = new (Context) ConditionalOperator(
8945 ReductionOp.get(), SourceLocation(), LHSDRE, SourceLocation(),
8946 RHSDRE, Type, VK_LValue, OK_Ordinary);
8947 ReductionOp =
8948 BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ReductionId.getLocStart(),
8949 BO_Assign, LHSDRE, ConditionalOp);
8950 }
8951 ReductionOp = ActOnFinishFullExpr(ReductionOp.get());
8952 }
8953 if (ReductionOp.isInvalid())
8954 continue;
8955 }
8956
8957 DeclRefExpr *Ref = nullptr;
8958 Expr *VarsExpr = RefExpr->IgnoreParens();
8959 if (!VD) {
8960 if (ASE || OASE) {
8961 TransformExprToCaptures RebuildToCapture(*this, D);
8962 VarsExpr =
8963 RebuildToCapture.TransformExpr(RefExpr->IgnoreParens()).get();
8964 Ref = RebuildToCapture.getCapturedExpr();
8965 } else {
8966 VarsExpr = Ref =
8967 buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/false);
8968 }
8969 if (!IsOpenMPCapturedDecl(D)) {
8970 ExprCaptures.push_back(Ref->getDecl());
8971 if (Ref->getDecl()->hasAttr<OMPCaptureNoInitAttr>()) {
8972 ExprResult RefRes = DefaultLvalueConversion(Ref);
8973 if (!RefRes.isUsable())
8974 continue;
8975 ExprResult PostUpdateRes =
8976 BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ELoc, BO_Assign,
8977 SimpleRefExpr, RefRes.get());
8978 if (!PostUpdateRes.isUsable())
8979 continue;
8980 ExprPostUpdates.push_back(
8981 IgnoredValueConversions(PostUpdateRes.get()).get());
8982 }
8983 }
8984 }
8985 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(D, RefExpr->IgnoreParens(), OMPC_reduction, Ref);
8986 Vars.push_back(VarsExpr);
8987 Privates.push_back(PrivateDRE);
8988 LHSs.push_back(LHSDRE);
8989 RHSs.push_back(RHSDRE);
8990 ReductionOps.push_back(ReductionOp.get());
8991 }
8992
8993 if (Vars.empty())
8994 return nullptr;
8995
8996 return OMPReductionClause::Create(
8997 Context, StartLoc, LParenLoc, ColonLoc, EndLoc, Vars,
8998 ReductionIdScopeSpec.getWithLocInContext(Context), ReductionId, Privates,
8999 LHSs, RHSs, ReductionOps, buildPreInits(Context, ExprCaptures),
9000 buildPostUpdate(*this, ExprPostUpdates));
9001}
9002
9003bool Sema::CheckOpenMPLinearModifier(OpenMPLinearClauseKind LinKind,
9004 SourceLocation LinLoc) {
9005 if ((!LangOpts.CPlusPlus && LinKind != OMPC_LINEAR_val) ||
9006 LinKind == OMPC_LINEAR_unknown) {
9007 Diag(LinLoc, diag::err_omp_wrong_linear_modifier) << LangOpts.CPlusPlus;
9008 return true;
9009 }
9010 return false;
9011}
9012
9013bool Sema::CheckOpenMPLinearDecl(ValueDecl *D, SourceLocation ELoc,
9014 OpenMPLinearClauseKind LinKind,
9015 QualType Type) {
9016 auto *VD = dyn_cast_or_null<VarDecl>(D);
9017 // A variable must not have an incomplete type or a reference type.
9018 if (RequireCompleteType(ELoc, Type, diag::err_omp_linear_incomplete_type))
9019 return true;
9020 if ((LinKind == OMPC_LINEAR_uval || LinKind == OMPC_LINEAR_ref) &&
9021 !Type->isReferenceType()) {
9022 Diag(ELoc, diag::err_omp_wrong_linear_modifier_non_reference)
9023 << Type << getOpenMPSimpleClauseTypeName(OMPC_linear, LinKind);
9024 return true;
9025 }
9026 Type = Type.getNonReferenceType();
9027
9028 // A list item must not be const-qualified.
9029 if (Type.isConstant(Context)) {
9030 Diag(ELoc, diag::err_omp_const_variable)
9031 << getOpenMPClauseName(OMPC_linear);
9032 if (D) {
9033 bool IsDecl =
9034 !VD ||
9035 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
9036 Diag(D->getLocation(),
9037 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
9038 << D;
9039 }
9040 return true;
9041 }
9042
9043 // A list item must be of integral or pointer type.
9044 Type = Type.getUnqualifiedType().getCanonicalType();
9045 const auto *Ty = Type.getTypePtrOrNull();
9046 if (!Ty || (!Ty->isDependentType() && !Ty->isIntegralType(Context) &&
9047 !Ty->isPointerType())) {
9048 Diag(ELoc, diag::err_omp_linear_expected_int_or_ptr) << Type;
9049 if (D) {
9050 bool IsDecl =
9051 !VD ||
9052 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
9053 Diag(D->getLocation(),
9054 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
9055 << D;
9056 }
9057 return true;
9058 }
9059 return false;
9060}
9061
9062OMPClause *Sema::ActOnOpenMPLinearClause(
9063 ArrayRef<Expr *> VarList, Expr *Step, SourceLocation StartLoc,
9064 SourceLocation LParenLoc, OpenMPLinearClauseKind LinKind,
9065 SourceLocation LinLoc, SourceLocation ColonLoc, SourceLocation EndLoc) {
9066 SmallVector<Expr *, 8> Vars;
9067 SmallVector<Expr *, 8> Privates;
9068 SmallVector<Expr *, 8> Inits;
9069 SmallVector<Decl *, 4> ExprCaptures;
9070 SmallVector<Expr *, 4> ExprPostUpdates;
9071 if (CheckOpenMPLinearModifier(LinKind, LinLoc))
9072 LinKind = OMPC_LINEAR_val;
9073 for (auto &RefExpr : VarList) {
9074 assert(RefExpr && "NULL expr in OpenMP linear clause.")((RefExpr && "NULL expr in OpenMP linear clause.") ? static_cast
<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP linear clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9074, __PRETTY_FUNCTION__));
9075 SourceLocation ELoc;
9076 SourceRange ERange;
9077 Expr *SimpleRefExpr = RefExpr;
9078 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange,
9079 /*AllowArraySection=*/false);
9080 if (Res.second) {
9081 // It will be analyzed later.
9082 Vars.push_back(RefExpr);
9083 Privates.push_back(nullptr);
9084 Inits.push_back(nullptr);
9085 }
9086 ValueDecl *D = Res.first;
9087 if (!D)
9088 continue;
9089
9090 QualType Type = D->getType();
9091 auto *VD = dyn_cast<VarDecl>(D);
9092
9093 // OpenMP [2.14.3.7, linear clause]
9094 // A list-item cannot appear in more than one linear clause.
9095 // A list-item that appears in a linear clause cannot appear in any
9096 // other data-sharing attribute clause.
9097 DSAStackTy::DSAVarData DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
9098 if (DVar.RefExpr) {
9099 Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind)
9100 << getOpenMPClauseName(OMPC_linear);
9101 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
9102 continue;
9103 }
9104
9105 if (CheckOpenMPLinearDecl(D, ELoc, LinKind, Type))
9106 continue;
9107 Type = Type.getNonReferenceType().getUnqualifiedType().getCanonicalType();
9108
9109 // Build private copy of original var.
9110 auto *Private = buildVarDecl(*this, ELoc, Type, D->getName(),
9111 D->hasAttrs() ? &D->getAttrs() : nullptr);
9112 auto *PrivateRef = buildDeclRefExpr(*this, Private, Type, ELoc);
9113 // Build var to save initial value.
9114 VarDecl *Init = buildVarDecl(*this, ELoc, Type, ".linear.start");
9115 Expr *InitExpr;
9116 DeclRefExpr *Ref = nullptr;
9117 if (!VD) {
9118 Ref = buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/false);
9119 if (!IsOpenMPCapturedDecl(D)) {
9120 ExprCaptures.push_back(Ref->getDecl());
9121 if (Ref->getDecl()->hasAttr<OMPCaptureNoInitAttr>()) {
9122 ExprResult RefRes = DefaultLvalueConversion(Ref);
9123 if (!RefRes.isUsable())
9124 continue;
9125 ExprResult PostUpdateRes =
9126 BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ELoc, BO_Assign,
9127 SimpleRefExpr, RefRes.get());
9128 if (!PostUpdateRes.isUsable())
9129 continue;
9130 ExprPostUpdates.push_back(
9131 IgnoredValueConversions(PostUpdateRes.get()).get());
9132 }
9133 }
9134 }
9135 if (LinKind == OMPC_LINEAR_uval)
9136 InitExpr = VD ? VD->getInit() : SimpleRefExpr;
9137 else
9138 InitExpr = VD ? SimpleRefExpr : Ref;
9139 AddInitializerToDecl(Init, DefaultLvalueConversion(InitExpr).get(),
9140 /*DirectInit=*/false, /*TypeMayContainAuto=*/false);
9141 auto InitRef = buildDeclRefExpr(*this, Init, Type, ELoc);
9142
9143 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(D, RefExpr->IgnoreParens(), OMPC_linear, Ref);
9144 Vars.push_back(VD ? RefExpr->IgnoreParens() : Ref);
9145 Privates.push_back(PrivateRef);
9146 Inits.push_back(InitRef);
9147 }
9148
9149 if (Vars.empty())
9150 return nullptr;
9151
9152 Expr *StepExpr = Step;
9153 Expr *CalcStepExpr = nullptr;
9154 if (Step && !Step->isValueDependent() && !Step->isTypeDependent() &&
9155 !Step->isInstantiationDependent() &&
9156 !Step->containsUnexpandedParameterPack()) {
9157 SourceLocation StepLoc = Step->getLocStart();
9158 ExprResult Val = PerformOpenMPImplicitIntegerConversion(StepLoc, Step);
9159 if (Val.isInvalid())
9160 return nullptr;
9161 StepExpr = Val.get();
9162
9163 // Build var to save the step value.
9164 VarDecl *SaveVar =
9165 buildVarDecl(*this, StepLoc, StepExpr->getType(), ".linear.step");
9166 ExprResult SaveRef =
9167 buildDeclRefExpr(*this, SaveVar, StepExpr->getType(), StepLoc);
9168 ExprResult CalcStep =
9169 BuildBinOp(CurScope, StepLoc, BO_Assign, SaveRef.get(), StepExpr);
9170 CalcStep = ActOnFinishFullExpr(CalcStep.get());
9171
9172 // Warn about zero linear step (it would be probably better specified as
9173 // making corresponding variables 'const').
9174 llvm::APSInt Result;
9175 bool IsConstant = StepExpr->isIntegerConstantExpr(Result, Context);
9176 if (IsConstant && !Result.isNegative() && !Result.isStrictlyPositive())
9177 Diag(StepLoc, diag::warn_omp_linear_step_zero) << Vars[0]
9178 << (Vars.size() > 1);
9179 if (!IsConstant && CalcStep.isUsable()) {
9180 // Calculate the step beforehand instead of doing this on each iteration.
9181 // (This is not used if the number of iterations may be kfold-ed).
9182 CalcStepExpr = CalcStep.get();
9183 }
9184 }
9185
9186 return OMPLinearClause::Create(Context, StartLoc, LParenLoc, LinKind, LinLoc,
9187 ColonLoc, EndLoc, Vars, Privates, Inits,
9188 StepExpr, CalcStepExpr,
9189 buildPreInits(Context, ExprCaptures),
9190 buildPostUpdate(*this, ExprPostUpdates));
9191}
9192
9193static bool FinishOpenMPLinearClause(OMPLinearClause &Clause, DeclRefExpr *IV,
9194 Expr *NumIterations, Sema &SemaRef,
9195 Scope *S, DSAStackTy *Stack) {
9196 // Walk the vars and build update/final expressions for the CodeGen.
9197 SmallVector<Expr *, 8> Updates;
9198 SmallVector<Expr *, 8> Finals;
9199 Expr *Step = Clause.getStep();
9200 Expr *CalcStep = Clause.getCalcStep();
9201 // OpenMP [2.14.3.7, linear clause]
9202 // If linear-step is not specified it is assumed to be 1.
9203 if (Step == nullptr)
9204 Step = SemaRef.ActOnIntegerConstant(SourceLocation(), 1).get();
9205 else if (CalcStep) {
9206 Step = cast<BinaryOperator>(CalcStep)->getLHS();
9207 }
9208 bool HasErrors = false;
9209 auto CurInit = Clause.inits().begin();
9210 auto CurPrivate = Clause.privates().begin();
9211 auto LinKind = Clause.getModifier();
9212 for (auto &RefExpr : Clause.varlists()) {
9213 SourceLocation ELoc;
9214 SourceRange ERange;
9215 Expr *SimpleRefExpr = RefExpr;
9216 auto Res = getPrivateItem(SemaRef, SimpleRefExpr, ELoc, ERange,
9217 /*AllowArraySection=*/false);
9218 ValueDecl *D = Res.first;
9219 if (Res.second || !D) {
9220 Updates.push_back(nullptr);
9221 Finals.push_back(nullptr);
9222 HasErrors = true;
9223 continue;
9224 }
9225 if (auto *CED = dyn_cast<OMPCapturedExprDecl>(D)) {
9226 D = cast<MemberExpr>(CED->getInit()->IgnoreParenImpCasts())
9227 ->getMemberDecl();
9228 }
9229 auto &&Info = Stack->isLoopControlVariable(D);
9230 Expr *InitExpr = *CurInit;
9231
9232 // Build privatized reference to the current linear var.
9233 auto DE = cast<DeclRefExpr>(SimpleRefExpr);
9234 Expr *CapturedRef;
9235 if (LinKind == OMPC_LINEAR_uval)
9236 CapturedRef = cast<VarDecl>(DE->getDecl())->getInit();
9237 else
9238 CapturedRef =
9239 buildDeclRefExpr(SemaRef, cast<VarDecl>(DE->getDecl()),
9240 DE->getType().getUnqualifiedType(), DE->getExprLoc(),
9241 /*RefersToCapture=*/true);
9242
9243 // Build update: Var = InitExpr + IV * Step
9244 ExprResult Update;
9245 if (!Info.first) {
9246 Update =
9247 BuildCounterUpdate(SemaRef, S, RefExpr->getExprLoc(), *CurPrivate,
9248 InitExpr, IV, Step, /* Subtract */ false);
9249 } else
9250 Update = *CurPrivate;
9251 Update = SemaRef.ActOnFinishFullExpr(Update.get(), DE->getLocStart(),
9252 /*DiscardedValue=*/true);
9253
9254 // Build final: Var = InitExpr + NumIterations * Step
9255 ExprResult Final;
9256 if (!Info.first) {
9257 Final = BuildCounterUpdate(SemaRef, S, RefExpr->getExprLoc(), CapturedRef,
9258 InitExpr, NumIterations, Step,
9259 /* Subtract */ false);
9260 } else
9261 Final = *CurPrivate;
9262 Final = SemaRef.ActOnFinishFullExpr(Final.get(), DE->getLocStart(),
9263 /*DiscardedValue=*/true);
9264
9265 if (!Update.isUsable() || !Final.isUsable()) {
9266 Updates.push_back(nullptr);
9267 Finals.push_back(nullptr);
9268 HasErrors = true;
9269 } else {
9270 Updates.push_back(Update.get());
9271 Finals.push_back(Final.get());
9272 }
9273 ++CurInit;
9274 ++CurPrivate;
9275 }
9276 Clause.setUpdates(Updates);
9277 Clause.setFinals(Finals);
9278 return HasErrors;
9279}
9280
9281OMPClause *Sema::ActOnOpenMPAlignedClause(
9282 ArrayRef<Expr *> VarList, Expr *Alignment, SourceLocation StartLoc,
9283 SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc) {
9284
9285 SmallVector<Expr *, 8> Vars;
9286 for (auto &RefExpr : VarList) {
9287 assert(RefExpr && "NULL expr in OpenMP linear clause.")((RefExpr && "NULL expr in OpenMP linear clause.") ? static_cast
<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP linear clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9287, __PRETTY_FUNCTION__));
9288 SourceLocation ELoc;
9289 SourceRange ERange;
9290 Expr *SimpleRefExpr = RefExpr;
9291 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange,
9292 /*AllowArraySection=*/false);
9293 if (Res.second) {
9294 // It will be analyzed later.
9295 Vars.push_back(RefExpr);
9296 }
9297 ValueDecl *D = Res.first;
9298 if (!D)
9299 continue;
9300
9301 QualType QType = D->getType();
9302 auto *VD = dyn_cast<VarDecl>(D);
9303
9304 // OpenMP [2.8.1, simd construct, Restrictions]
9305 // The type of list items appearing in the aligned clause must be
9306 // array, pointer, reference to array, or reference to pointer.
9307 QType = QType.getNonReferenceType().getUnqualifiedType().getCanonicalType();
9308 const Type *Ty = QType.getTypePtrOrNull();
9309 if (!Ty || (!Ty->isArrayType() && !Ty->isPointerType())) {
9310 Diag(ELoc, diag::err_omp_aligned_expected_array_or_ptr)
9311 << QType << getLangOpts().CPlusPlus << ERange;
9312 bool IsDecl =
9313 !VD ||
9314 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
9315 Diag(D->getLocation(),
9316 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
9317 << D;
9318 continue;
9319 }
9320
9321 // OpenMP [2.8.1, simd construct, Restrictions]
9322 // A list-item cannot appear in more than one aligned clause.
9323 if (Expr *PrevRef = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addUniqueAligned(D, SimpleRefExpr)) {
9324 Diag(ELoc, diag::err_omp_aligned_twice) << 0 << ERange;
9325 Diag(PrevRef->getExprLoc(), diag::note_omp_explicit_dsa)
9326 << getOpenMPClauseName(OMPC_aligned);
9327 continue;
9328 }
9329
9330 DeclRefExpr *Ref = nullptr;
9331 if (!VD && IsOpenMPCapturedDecl(D))
9332 Ref = buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/true);
9333 Vars.push_back(DefaultFunctionArrayConversion(
9334 (VD || !Ref) ? RefExpr->IgnoreParens() : Ref)
9335 .get());
9336 }
9337
9338 // OpenMP [2.8.1, simd construct, Description]
9339 // The parameter of the aligned clause, alignment, must be a constant
9340 // positive integer expression.
9341 // If no optional parameter is specified, implementation-defined default
9342 // alignments for SIMD instructions on the target platforms are assumed.
9343 if (Alignment != nullptr) {
9344 ExprResult AlignResult =
9345 VerifyPositiveIntegerConstantInClause(Alignment, OMPC_aligned);
9346 if (AlignResult.isInvalid())
9347 return nullptr;
9348 Alignment = AlignResult.get();
9349 }
9350 if (Vars.empty())
9351 return nullptr;
9352
9353 return OMPAlignedClause::Create(Context, StartLoc, LParenLoc, ColonLoc,
9354 EndLoc, Vars, Alignment);
9355}
9356
9357OMPClause *Sema::ActOnOpenMPCopyinClause(ArrayRef<Expr *> VarList,
9358 SourceLocation StartLoc,
9359 SourceLocation LParenLoc,
9360 SourceLocation EndLoc) {
9361 SmallVector<Expr *, 8> Vars;
9362 SmallVector<Expr *, 8> SrcExprs;
9363 SmallVector<Expr *, 8> DstExprs;
9364 SmallVector<Expr *, 8> AssignmentOps;
9365 for (auto &RefExpr : VarList) {
9366 assert(RefExpr && "NULL expr in OpenMP copyin clause.")((RefExpr && "NULL expr in OpenMP copyin clause.") ? static_cast
<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP copyin clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9366, __PRETTY_FUNCTION__));
9367 if (isa<DependentScopeDeclRefExpr>(RefExpr)) {
9368 // It will be analyzed later.
9369 Vars.push_back(RefExpr);
9370 SrcExprs.push_back(nullptr);
9371 DstExprs.push_back(nullptr);
9372 AssignmentOps.push_back(nullptr);
9373 continue;
9374 }
9375
9376 SourceLocation ELoc = RefExpr->getExprLoc();
9377 // OpenMP [2.1, C/C++]
9378 // A list item is a variable name.
9379 // OpenMP [2.14.4.1, Restrictions, p.1]
9380 // A list item that appears in a copyin clause must be threadprivate.
9381 DeclRefExpr *DE = dyn_cast<DeclRefExpr>(RefExpr);
9382 if (!DE || !isa<VarDecl>(DE->getDecl())) {
9383 Diag(ELoc, diag::err_omp_expected_var_name_member_expr)
9384 << 0 << RefExpr->getSourceRange();
9385 continue;
9386 }
9387
9388 Decl *D = DE->getDecl();
9389 VarDecl *VD = cast<VarDecl>(D);
9390
9391 QualType Type = VD->getType();
9392 if (Type->isDependentType() || Type->isInstantiationDependentType()) {
9393 // It will be analyzed later.
9394 Vars.push_back(DE);
9395 SrcExprs.push_back(nullptr);
9396 DstExprs.push_back(nullptr);
9397 AssignmentOps.push_back(nullptr);
9398 continue;
9399 }
9400
9401 // OpenMP [2.14.4.1, Restrictions, C/C++, p.1]
9402 // A list item that appears in a copyin clause must be threadprivate.
9403 if (!DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isThreadPrivate(VD)) {
9404 Diag(ELoc, diag::err_omp_required_access)
9405 << getOpenMPClauseName(OMPC_copyin)
9406 << getOpenMPDirectiveName(OMPD_threadprivate);
9407 continue;
9408 }
9409
9410 // OpenMP [2.14.4.1, Restrictions, C/C++, p.2]
9411 // A variable of class type (or array thereof) that appears in a
9412 // copyin clause requires an accessible, unambiguous copy assignment
9413 // operator for the class type.
9414 auto ElemType = Context.getBaseElementType(Type).getNonReferenceType();
9415 auto *SrcVD =
9416 buildVarDecl(*this, DE->getLocStart(), ElemType.getUnqualifiedType(),
9417 ".copyin.src", VD->hasAttrs() ? &VD->getAttrs() : nullptr);
9418 auto *PseudoSrcExpr = buildDeclRefExpr(
9419 *this, SrcVD, ElemType.getUnqualifiedType(), DE->getExprLoc());
9420 auto *DstVD =
9421 buildVarDecl(*this, DE->getLocStart(), ElemType, ".copyin.dst",
9422 VD->hasAttrs() ? &VD->getAttrs() : nullptr);
9423 auto *PseudoDstExpr =
9424 buildDeclRefExpr(*this, DstVD, ElemType, DE->getExprLoc());
9425 // For arrays generate assignment operation for single element and replace
9426 // it by the original array element in CodeGen.
9427 auto AssignmentOp = BuildBinOp(/*S=*/nullptr, DE->getExprLoc(), BO_Assign,
9428 PseudoDstExpr, PseudoSrcExpr);
9429 if (AssignmentOp.isInvalid())
9430 continue;
9431 AssignmentOp = ActOnFinishFullExpr(AssignmentOp.get(), DE->getExprLoc(),
9432 /*DiscardedValue=*/true);
9433 if (AssignmentOp.isInvalid())
9434 continue;
9435
9436 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDSA(VD, DE, OMPC_copyin);
9437 Vars.push_back(DE);
9438 SrcExprs.push_back(PseudoSrcExpr);
9439 DstExprs.push_back(PseudoDstExpr);
9440 AssignmentOps.push_back(AssignmentOp.get());
9441 }
9442
9443 if (Vars.empty())
9444 return nullptr;
9445
9446 return OMPCopyinClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars,
9447 SrcExprs, DstExprs, AssignmentOps);
9448}
9449
9450OMPClause *Sema::ActOnOpenMPCopyprivateClause(ArrayRef<Expr *> VarList,
9451 SourceLocation StartLoc,
9452 SourceLocation LParenLoc,
9453 SourceLocation EndLoc) {
9454 SmallVector<Expr *, 8> Vars;
9455 SmallVector<Expr *, 8> SrcExprs;
9456 SmallVector<Expr *, 8> DstExprs;
9457 SmallVector<Expr *, 8> AssignmentOps;
9458 for (auto &RefExpr : VarList) {
9459 assert(RefExpr && "NULL expr in OpenMP linear clause.")((RefExpr && "NULL expr in OpenMP linear clause.") ? static_cast
<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP linear clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9459, __PRETTY_FUNCTION__));
9460 SourceLocation ELoc;
9461 SourceRange ERange;
9462 Expr *SimpleRefExpr = RefExpr;
9463 auto Res = getPrivateItem(*this, SimpleRefExpr, ELoc, ERange,
9464 /*AllowArraySection=*/false);
9465 if (Res.second) {
9466 // It will be analyzed later.
9467 Vars.push_back(RefExpr);
9468 SrcExprs.push_back(nullptr);
9469 DstExprs.push_back(nullptr);
9470 AssignmentOps.push_back(nullptr);
9471 }
9472 ValueDecl *D = Res.first;
9473 if (!D)
9474 continue;
9475
9476 QualType Type = D->getType();
9477 auto *VD = dyn_cast<VarDecl>(D);
9478
9479 // OpenMP [2.14.4.2, Restrictions, p.2]
9480 // A list item that appears in a copyprivate clause may not appear in a
9481 // private or firstprivate clause on the single construct.
9482 if (!VD || !DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isThreadPrivate(VD)) {
9483 auto DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(D, false);
9484 if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_copyprivate &&
9485 DVar.RefExpr) {
9486 Diag(ELoc, diag::err_omp_wrong_dsa)
9487 << getOpenMPClauseName(DVar.CKind)
9488 << getOpenMPClauseName(OMPC_copyprivate);
9489 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
9490 continue;
9491 }
9492
9493 // OpenMP [2.11.4.2, Restrictions, p.1]
9494 // All list items that appear in a copyprivate clause must be either
9495 // threadprivate or private in the enclosing context.
9496 if (DVar.CKind == OMPC_unknown) {
9497 DVar = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getImplicitDSA(D, false);
9498 if (DVar.CKind == OMPC_shared) {
9499 Diag(ELoc, diag::err_omp_required_access)
9500 << getOpenMPClauseName(OMPC_copyprivate)
9501 << "threadprivate or private in the enclosing context";
9502 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), D, DVar);
9503 continue;
9504 }
9505 }
9506 }
9507
9508 // Variably modified types are not supported.
9509 if (!Type->isAnyPointerType() && Type->isVariablyModifiedType()) {
9510 Diag(ELoc, diag::err_omp_variably_modified_type_not_supported)
9511 << getOpenMPClauseName(OMPC_copyprivate) << Type
9512 << getOpenMPDirectiveName(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective());
9513 bool IsDecl =
9514 !VD ||
9515 VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly;
9516 Diag(D->getLocation(),
9517 IsDecl ? diag::note_previous_decl : diag::note_defined_here)
9518 << D;
9519 continue;
9520 }
9521
9522 // OpenMP [2.14.4.1, Restrictions, C/C++, p.2]
9523 // A variable of class type (or array thereof) that appears in a
9524 // copyin clause requires an accessible, unambiguous copy assignment
9525 // operator for the class type.
9526 Type = Context.getBaseElementType(Type.getNonReferenceType())
9527 .getUnqualifiedType();
9528 auto *SrcVD =
9529 buildVarDecl(*this, RefExpr->getLocStart(), Type, ".copyprivate.src",
9530 D->hasAttrs() ? &D->getAttrs() : nullptr);
9531 auto *PseudoSrcExpr = buildDeclRefExpr(*this, SrcVD, Type, ELoc);
9532 auto *DstVD =
9533 buildVarDecl(*this, RefExpr->getLocStart(), Type, ".copyprivate.dst",
9534 D->hasAttrs() ? &D->getAttrs() : nullptr);
9535 auto *PseudoDstExpr =
9536 buildDeclRefExpr(*this, DstVD, Type, ELoc);
9537 auto AssignmentOp = BuildBinOp(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurScope(), ELoc, BO_Assign,
9538 PseudoDstExpr, PseudoSrcExpr);
9539 if (AssignmentOp.isInvalid())
9540 continue;
9541 AssignmentOp = ActOnFinishFullExpr(AssignmentOp.get(), ELoc,
9542 /*DiscardedValue=*/true);
9543 if (AssignmentOp.isInvalid())
9544 continue;
9545
9546 // No need to mark vars as copyprivate, they are already threadprivate or
9547 // implicitly private.
9548 assert(VD || IsOpenMPCapturedDecl(D))((VD || IsOpenMPCapturedDecl(D)) ? static_cast<void> (0
) : __assert_fail ("VD || IsOpenMPCapturedDecl(D)", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9548, __PRETTY_FUNCTION__));
9549 Vars.push_back(
9550 VD ? RefExpr->IgnoreParens()
9551 : buildCapture(*this, D, SimpleRefExpr, /*WithInit=*/false));
9552 SrcExprs.push_back(PseudoSrcExpr);
9553 DstExprs.push_back(PseudoDstExpr);
9554 AssignmentOps.push_back(AssignmentOp.get());
9555 }
9556
9557 if (Vars.empty())
9558 return nullptr;
9559
9560 return OMPCopyprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc,
9561 Vars, SrcExprs, DstExprs, AssignmentOps);
9562}
9563
9564OMPClause *Sema::ActOnOpenMPFlushClause(ArrayRef<Expr *> VarList,
9565 SourceLocation StartLoc,
9566 SourceLocation LParenLoc,
9567 SourceLocation EndLoc) {
9568 if (VarList.empty())
9569 return nullptr;
9570
9571 return OMPFlushClause::Create(Context, StartLoc, LParenLoc, EndLoc, VarList);
9572}
9573
9574OMPClause *
9575Sema::ActOnOpenMPDependClause(OpenMPDependClauseKind DepKind,
9576 SourceLocation DepLoc, SourceLocation ColonLoc,
9577 ArrayRef<Expr *> VarList, SourceLocation StartLoc,
9578 SourceLocation LParenLoc, SourceLocation EndLoc) {
9579 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective() == OMPD_ordered &&
9580 DepKind != OMPC_DEPEND_source && DepKind != OMPC_DEPEND_sink) {
9581 Diag(DepLoc, diag::err_omp_unexpected_clause_value)
9582 << "'source' or 'sink'" << getOpenMPClauseName(OMPC_depend);
9583 return nullptr;
9584 }
9585 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective() != OMPD_ordered &&
9586 (DepKind == OMPC_DEPEND_unknown || DepKind == OMPC_DEPEND_source ||
9587 DepKind == OMPC_DEPEND_sink)) {
9588 unsigned Except[] = {OMPC_DEPEND_source, OMPC_DEPEND_sink};
9589 Diag(DepLoc, diag::err_omp_unexpected_clause_value)
9590 << getListOfPossibleValues(OMPC_depend, /*First=*/0,
9591 /*Last=*/OMPC_DEPEND_unknown, Except)
9592 << getOpenMPClauseName(OMPC_depend);
9593 return nullptr;
9594 }
9595 SmallVector<Expr *, 8> Vars;
9596 DSAStackTy::OperatorOffsetTy OpsOffs;
9597 llvm::APSInt DepCounter(/*BitWidth=*/32);
9598 llvm::APSInt TotalDepCount(/*BitWidth=*/32);
9599 if (DepKind == OMPC_DEPEND_sink) {
9600 if (auto *OrderedCountExpr = DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentOrderedRegionParam()) {
9601 TotalDepCount = OrderedCountExpr->EvaluateKnownConstInt(Context);
9602 TotalDepCount.setIsUnsigned(/*Val=*/true);
9603 }
9604 }
9605 if ((DepKind != OMPC_DEPEND_sink && DepKind != OMPC_DEPEND_source) ||
9606 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentOrderedRegionParam()) {
9607 for (auto &RefExpr : VarList) {
9608 assert(RefExpr && "NULL expr in OpenMP shared clause.")((RefExpr && "NULL expr in OpenMP shared clause.") ? static_cast
<void> (0) : __assert_fail ("RefExpr && \"NULL expr in OpenMP shared clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9608, __PRETTY_FUNCTION__));
9609 if (isa<DependentScopeDeclRefExpr>(RefExpr)) {
9610 // It will be analyzed later.
9611 Vars.push_back(RefExpr);
9612 continue;
9613 }
9614
9615 SourceLocation ELoc = RefExpr->getExprLoc();
9616 auto *SimpleExpr = RefExpr->IgnoreParenCasts();
9617 if (DepKind == OMPC_DEPEND_sink) {
9618 if (DepCounter >= TotalDepCount) {
9619 Diag(ELoc, diag::err_omp_depend_sink_unexpected_expr);
9620 continue;
9621 }
9622 ++DepCounter;
9623 // OpenMP [2.13.9, Summary]
9624 // depend(dependence-type : vec), where dependence-type is:
9625 // 'sink' and where vec is the iteration vector, which has the form:
9626 // x1 [+- d1], x2 [+- d2 ], . . . , xn [+- dn]
9627 // where n is the value specified by the ordered clause in the loop
9628 // directive, xi denotes the loop iteration variable of the i-th nested
9629 // loop associated with the loop directive, and di is a constant
9630 // non-negative integer.
9631 if (CurContext->isDependentContext()) {
9632 // It will be analyzed later.
9633 Vars.push_back(RefExpr);
9634 continue;
9635 }
9636 SimpleExpr = SimpleExpr->IgnoreImplicit();
9637 OverloadedOperatorKind OOK = OO_None;
9638 SourceLocation OOLoc;
9639 Expr *LHS = SimpleExpr;
9640 Expr *RHS = nullptr;
9641 if (auto *BO = dyn_cast<BinaryOperator>(SimpleExpr)) {
9642 OOK = BinaryOperator::getOverloadedOperator(BO->getOpcode());
9643 OOLoc = BO->getOperatorLoc();
9644 LHS = BO->getLHS()->IgnoreParenImpCasts();
9645 RHS = BO->getRHS()->IgnoreParenImpCasts();
9646 } else if (auto *OCE = dyn_cast<CXXOperatorCallExpr>(SimpleExpr)) {
9647 OOK = OCE->getOperator();
9648 OOLoc = OCE->getOperatorLoc();
9649 LHS = OCE->getArg(/*Arg=*/0)->IgnoreParenImpCasts();
9650 RHS = OCE->getArg(/*Arg=*/1)->IgnoreParenImpCasts();
9651 } else if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SimpleExpr)) {
9652 OOK = MCE->getMethodDecl()
9653 ->getNameInfo()
9654 .getName()
9655 .getCXXOverloadedOperator();
9656 OOLoc = MCE->getCallee()->getExprLoc();
9657 LHS = MCE->getImplicitObjectArgument()->IgnoreParenImpCasts();
9658 RHS = MCE->getArg(/*Arg=*/0)->IgnoreParenImpCasts();
9659 }
9660 SourceLocation ELoc;
9661 SourceRange ERange;
9662 auto Res = getPrivateItem(*this, LHS, ELoc, ERange,
9663 /*AllowArraySection=*/false);
9664 if (Res.second) {
9665 // It will be analyzed later.
9666 Vars.push_back(RefExpr);
9667 }
9668 ValueDecl *D = Res.first;
9669 if (!D)
9670 continue;
9671
9672 if (OOK != OO_Plus && OOK != OO_Minus && (RHS || OOK != OO_None)) {
9673 Diag(OOLoc, diag::err_omp_depend_sink_expected_plus_minus);
9674 continue;
9675 }
9676 if (RHS) {
9677 ExprResult RHSRes = VerifyPositiveIntegerConstantInClause(
9678 RHS, OMPC_depend, /*StrictlyPositive=*/false);
9679 if (RHSRes.isInvalid())
9680 continue;
9681 }
9682 if (!CurContext->isDependentContext() &&
9683 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentOrderedRegionParam() &&
9684 DepCounter != DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isParentLoopControlVariable(D).first) {
9685 Diag(ELoc, diag::err_omp_depend_sink_expected_loop_iteration)
9686 << DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentLoopControlVariable(
9687 DepCounter.getZExtValue());
9688 continue;
9689 }
9690 OpsOffs.push_back({RHS, OOK});
9691 } else {
9692 // OpenMP [2.11.1.1, Restrictions, p.3]
9693 // A variable that is part of another variable (such as a field of a
9694 // structure) but is not an array element or an array section cannot
9695 // appear in a depend clause.
9696 auto *DE = dyn_cast<DeclRefExpr>(SimpleExpr);
9697 auto *ASE = dyn_cast<ArraySubscriptExpr>(SimpleExpr);
9698 auto *OASE = dyn_cast<OMPArraySectionExpr>(SimpleExpr);
9699 if (!RefExpr->IgnoreParenImpCasts()->isLValue() ||
9700 (!ASE && !DE && !OASE) || (DE && !isa<VarDecl>(DE->getDecl())) ||
9701 (ASE &&
9702 !ASE->getBase()
9703 ->getType()
9704 .getNonReferenceType()
9705 ->isPointerType() &&
9706 !ASE->getBase()->getType().getNonReferenceType()->isArrayType())) {
9707 Diag(ELoc, diag::err_omp_expected_var_name_member_expr_or_array_item)
9708 << 0 << RefExpr->getSourceRange();
9709 continue;
9710 }
9711 }
9712 Vars.push_back(RefExpr->IgnoreParenImpCasts());
9713 }
9714
9715 if (!CurContext->isDependentContext() && DepKind == OMPC_DEPEND_sink &&
9716 TotalDepCount > VarList.size() &&
9717 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentOrderedRegionParam()) {
9718 Diag(EndLoc, diag::err_omp_depend_sink_expected_loop_iteration)
9719 << DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getParentLoopControlVariable(VarList.size() + 1);
9720 }
9721 if (DepKind != OMPC_DEPEND_source && DepKind != OMPC_DEPEND_sink &&
9722 Vars.empty())
9723 return nullptr;
9724 }
9725 auto *C = OMPDependClause::Create(Context, StartLoc, LParenLoc, EndLoc,
9726 DepKind, DepLoc, ColonLoc, Vars);
9727 if (DepKind == OMPC_DEPEND_sink || DepKind == OMPC_DEPEND_source)
9728 DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->addDoacrossDependClause(C, OpsOffs);
9729 return C;
9730}
9731
9732OMPClause *Sema::ActOnOpenMPDeviceClause(Expr *Device, SourceLocation StartLoc,
9733 SourceLocation LParenLoc,
9734 SourceLocation EndLoc) {
9735 Expr *ValExpr = Device;
9736
9737 // OpenMP [2.9.1, Restrictions]
9738 // The device expression must evaluate to a non-negative integer value.
9739 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_device,
9740 /*StrictlyPositive=*/false))
9741 return nullptr;
9742
9743 return new (Context) OMPDeviceClause(ValExpr, StartLoc, LParenLoc, EndLoc);
9744}
9745
9746static bool IsCXXRecordForMappable(Sema &SemaRef, SourceLocation Loc,
9747 DSAStackTy *Stack, CXXRecordDecl *RD) {
9748 if (!RD || RD->isInvalidDecl())
9749 return true;
9750
9751 if (auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(RD))
9752 if (auto *CTD = CTSD->getSpecializedTemplate())
9753 RD = CTD->getTemplatedDecl();
9754 auto QTy = SemaRef.Context.getRecordType(RD);
9755 if (RD->isDynamicClass()) {
9756 SemaRef.Diag(Loc, diag::err_omp_not_mappable_type) << QTy;
9757 SemaRef.Diag(RD->getLocation(), diag::note_omp_polymorphic_in_target);
9758 return false;
9759 }
9760 auto *DC = RD;
9761 bool IsCorrect = true;
9762 for (auto *I : DC->decls()) {
9763 if (I) {
9764 if (auto *MD = dyn_cast<CXXMethodDecl>(I)) {
9765 if (MD->isStatic()) {
9766 SemaRef.Diag(Loc, diag::err_omp_not_mappable_type) << QTy;
9767 SemaRef.Diag(MD->getLocation(),
9768 diag::note_omp_static_member_in_target);
9769 IsCorrect = false;
9770 }
9771 } else if (auto *VD = dyn_cast<VarDecl>(I)) {
9772 if (VD->isStaticDataMember()) {
9773 SemaRef.Diag(Loc, diag::err_omp_not_mappable_type) << QTy;
9774 SemaRef.Diag(VD->getLocation(),
9775 diag::note_omp_static_member_in_target);
9776 IsCorrect = false;
9777 }
9778 }
9779 }
9780 }
9781
9782 for (auto &I : RD->bases()) {
9783 if (!IsCXXRecordForMappable(SemaRef, I.getLocStart(), Stack,
9784 I.getType()->getAsCXXRecordDecl()))
9785 IsCorrect = false;
9786 }
9787 return IsCorrect;
9788}
9789
9790static bool CheckTypeMappable(SourceLocation SL, SourceRange SR, Sema &SemaRef,
9791 DSAStackTy *Stack, QualType QTy) {
9792 NamedDecl *ND;
9793 if (QTy->isIncompleteType(&ND)) {
9794 SemaRef.Diag(SL, diag::err_incomplete_type) << QTy << SR;
9795 return false;
9796 } else if (CXXRecordDecl *RD = dyn_cast_or_null<CXXRecordDecl>(ND)) {
9797 if (!RD->isInvalidDecl() &&
9798 !IsCXXRecordForMappable(SemaRef, SL, Stack, RD))
9799 return false;
9800 }
9801 return true;
9802}
9803
9804/// \brief Return true if it can be proven that the provided array expression
9805/// (array section or array subscript) does NOT specify the whole size of the
9806/// array whose base type is \a BaseQTy.
9807static bool CheckArrayExpressionDoesNotReferToWholeSize(Sema &SemaRef,
9808 const Expr *E,
9809 QualType BaseQTy) {
9810 auto *OASE = dyn_cast<OMPArraySectionExpr>(E);
9811
9812 // If this is an array subscript, it refers to the whole size if the size of
9813 // the dimension is constant and equals 1. Also, an array section assumes the
9814 // format of an array subscript if no colon is used.
9815 if (isa<ArraySubscriptExpr>(E) || (OASE && OASE->getColonLoc().isInvalid())) {
9816 if (auto *ATy = dyn_cast<ConstantArrayType>(BaseQTy.getTypePtr()))
9817 return ATy->getSize().getSExtValue() != 1;
9818 // Size can't be evaluated statically.
9819 return false;
9820 }
9821
9822 assert(OASE && "Expecting array section if not an array subscript.")((OASE && "Expecting array section if not an array subscript."
) ? static_cast<void> (0) : __assert_fail ("OASE && \"Expecting array section if not an array subscript.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9822, __PRETTY_FUNCTION__));
9823 auto *LowerBound = OASE->getLowerBound();
9824 auto *Length = OASE->getLength();
9825
9826 // If there is a lower bound that does not evaluates to zero, we are not
9827 // convering the whole dimension.
9828 if (LowerBound) {
9829 llvm::APSInt ConstLowerBound;
9830 if (!LowerBound->EvaluateAsInt(ConstLowerBound, SemaRef.getASTContext()))
9831 return false; // Can't get the integer value as a constant.
9832 if (ConstLowerBound.getSExtValue())
9833 return true;
9834 }
9835
9836 // If we don't have a length we covering the whole dimension.
9837 if (!Length)
9838 return false;
9839
9840 // If the base is a pointer, we don't have a way to get the size of the
9841 // pointee.
9842 if (BaseQTy->isPointerType())
9843 return false;
9844
9845 // We can only check if the length is the same as the size of the dimension
9846 // if we have a constant array.
9847 auto *CATy = dyn_cast<ConstantArrayType>(BaseQTy.getTypePtr());
9848 if (!CATy)
9849 return false;
9850
9851 llvm::APSInt ConstLength;
9852 if (!Length->EvaluateAsInt(ConstLength, SemaRef.getASTContext()))
9853 return false; // Can't get the integer value as a constant.
9854
9855 return CATy->getSize().getSExtValue() != ConstLength.getSExtValue();
9856}
9857
9858// Return true if it can be proven that the provided array expression (array
9859// section or array subscript) does NOT specify a single element of the array
9860// whose base type is \a BaseQTy.
9861static bool CheckArrayExpressionDoesNotReferToUnitySize(Sema &SemaRef,
9862 const Expr *E,
9863 QualType BaseQTy) {
9864 auto *OASE = dyn_cast<OMPArraySectionExpr>(E);
9865
9866 // An array subscript always refer to a single element. Also, an array section
9867 // assumes the format of an array subscript if no colon is used.
9868 if (isa<ArraySubscriptExpr>(E) || (OASE && OASE->getColonLoc().isInvalid()))
9869 return false;
9870
9871 assert(OASE && "Expecting array section if not an array subscript.")((OASE && "Expecting array section if not an array subscript."
) ? static_cast<void> (0) : __assert_fail ("OASE && \"Expecting array section if not an array subscript.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 9871, __PRETTY_FUNCTION__));
9872 auto *Length = OASE->getLength();
9873
9874 // If we don't have a length we have to check if the array has unitary size
9875 // for this dimension. Also, we should always expect a length if the base type
9876 // is pointer.
9877 if (!Length) {
9878 if (auto *ATy = dyn_cast<ConstantArrayType>(BaseQTy.getTypePtr()))
9879 return ATy->getSize().getSExtValue() != 1;
9880 // We cannot assume anything.
9881 return false;
9882 }
9883
9884 // Check if the length evaluates to 1.
9885 llvm::APSInt ConstLength;
9886 if (!Length->EvaluateAsInt(ConstLength, SemaRef.getASTContext()))
9887 return false; // Can't get the integer value as a constant.
9888
9889 return ConstLength.getSExtValue() != 1;
9890}
9891
9892// Return the expression of the base of the mappable expression or null if it
9893// cannot be determined and do all the necessary checks to see if the expression
9894// is valid as a standalone mappable expression. In the process, record all the
9895// components of the expression.
9896static Expr *CheckMapClauseExpressionBase(
9897 Sema &SemaRef, Expr *E,
9898 OMPClauseMappableExprCommon::MappableExprComponentList &CurComponents,
9899 OpenMPClauseKind CKind) {
9900 SourceLocation ELoc = E->getExprLoc();
9901 SourceRange ERange = E->getSourceRange();
9902
9903 // The base of elements of list in a map clause have to be either:
9904 // - a reference to variable or field.
9905 // - a member expression.
9906 // - an array expression.
9907 //
9908 // E.g. if we have the expression 'r.S.Arr[:12]', we want to retrieve the
9909 // reference to 'r'.
9910 //
9911 // If we have:
9912 //
9913 // struct SS {
9914 // Bla S;
9915 // foo() {
9916 // #pragma omp target map (S.Arr[:12]);
9917 // }
9918 // }
9919 //
9920 // We want to retrieve the member expression 'this->S';
9921
9922 Expr *RelevantExpr = nullptr;
9923
9924 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.2]
9925 // If a list item is an array section, it must specify contiguous storage.
9926 //
9927 // For this restriction it is sufficient that we make sure only references
9928 // to variables or fields and array expressions, and that no array sections
9929 // exist except in the rightmost expression (unless they cover the whole
9930 // dimension of the array). E.g. these would be invalid:
9931 //
9932 // r.ArrS[3:5].Arr[6:7]
9933 //
9934 // r.ArrS[3:5].x
9935 //
9936 // but these would be valid:
9937 // r.ArrS[3].Arr[6:7]
9938 //
9939 // r.ArrS[3].x
9940
9941 bool AllowUnitySizeArraySection = true;
9942 bool AllowWholeSizeArraySection = true;
9943
9944 while (!RelevantExpr) {
9945 E = E->IgnoreParenImpCasts();
9946
9947 if (auto *CurE = dyn_cast<DeclRefExpr>(E)) {
9948 if (!isa<VarDecl>(CurE->getDecl()))
9949 break;
9950
9951 RelevantExpr = CurE;
9952
9953 // If we got a reference to a declaration, we should not expect any array
9954 // section before that.
9955 AllowUnitySizeArraySection = false;
9956 AllowWholeSizeArraySection = false;
9957
9958 // Record the component.
9959 CurComponents.push_back(OMPClauseMappableExprCommon::MappableComponent(
9960 CurE, CurE->getDecl()));
9961 continue;
9962 }
9963
9964 if (auto *CurE = dyn_cast<MemberExpr>(E)) {
9965 auto *BaseE = CurE->getBase()->IgnoreParenImpCasts();
9966
9967 if (isa<CXXThisExpr>(BaseE))
9968 // We found a base expression: this->Val.
9969 RelevantExpr = CurE;
9970 else
9971 E = BaseE;
9972
9973 if (!isa<FieldDecl>(CurE->getMemberDecl())) {
9974 SemaRef.Diag(ELoc, diag::err_omp_expected_access_to_data_field)
9975 << CurE->getSourceRange();
9976 break;
9977 }
9978
9979 auto *FD = cast<FieldDecl>(CurE->getMemberDecl());
9980
9981 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C/C++, p.3]
9982 // A bit-field cannot appear in a map clause.
9983 //
9984 if (FD->isBitField()) {
9985 SemaRef.Diag(ELoc, diag::err_omp_bit_fields_forbidden_in_clause)
9986 << CurE->getSourceRange() << getOpenMPClauseName(CKind);
9987 break;
9988 }
9989
9990 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C++, p.1]
9991 // If the type of a list item is a reference to a type T then the type
9992 // will be considered to be T for all purposes of this clause.
9993 QualType CurType = BaseE->getType().getNonReferenceType();
9994
9995 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C/C++, p.2]
9996 // A list item cannot be a variable that is a member of a structure with
9997 // a union type.
9998 //
9999 if (auto *RT = CurType->getAs<RecordType>())
10000 if (RT->isUnionType()) {
10001 SemaRef.Diag(ELoc, diag::err_omp_union_type_not_allowed)
10002 << CurE->getSourceRange();
10003 break;
10004 }
10005
10006 // If we got a member expression, we should not expect any array section
10007 // before that:
10008 //
10009 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.7]
10010 // If a list item is an element of a structure, only the rightmost symbol
10011 // of the variable reference can be an array section.
10012 //
10013 AllowUnitySizeArraySection = false;
10014 AllowWholeSizeArraySection = false;
10015
10016 // Record the component.
10017 CurComponents.push_back(
10018 OMPClauseMappableExprCommon::MappableComponent(CurE, FD));
10019 continue;
10020 }
10021
10022 if (auto *CurE = dyn_cast<ArraySubscriptExpr>(E)) {
10023 E = CurE->getBase()->IgnoreParenImpCasts();
10024
10025 if (!E->getType()->isAnyPointerType() && !E->getType()->isArrayType()) {
10026 SemaRef.Diag(ELoc, diag::err_omp_expected_base_var_name)
10027 << 0 << CurE->getSourceRange();
10028 break;
10029 }
10030
10031 // If we got an array subscript that express the whole dimension we
10032 // can have any array expressions before. If it only expressing part of
10033 // the dimension, we can only have unitary-size array expressions.
10034 if (CheckArrayExpressionDoesNotReferToWholeSize(SemaRef, CurE,
10035 E->getType()))
10036 AllowWholeSizeArraySection = false;
10037
10038 // Record the component - we don't have any declaration associated.
10039 CurComponents.push_back(
10040 OMPClauseMappableExprCommon::MappableComponent(CurE, nullptr));
10041 continue;
10042 }
10043
10044 if (auto *CurE = dyn_cast<OMPArraySectionExpr>(E)) {
10045 E = CurE->getBase()->IgnoreParenImpCasts();
10046
10047 auto CurType =
10048 OMPArraySectionExpr::getBaseOriginalType(E).getCanonicalType();
10049
10050 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C++, p.1]
10051 // If the type of a list item is a reference to a type T then the type
10052 // will be considered to be T for all purposes of this clause.
10053 if (CurType->isReferenceType())
10054 CurType = CurType->getPointeeType();
10055
10056 bool IsPointer = CurType->isAnyPointerType();
10057
10058 if (!IsPointer && !CurType->isArrayType()) {
10059 SemaRef.Diag(ELoc, diag::err_omp_expected_base_var_name)
10060 << 0 << CurE->getSourceRange();
10061 break;
10062 }
10063
10064 bool NotWhole =
10065 CheckArrayExpressionDoesNotReferToWholeSize(SemaRef, CurE, CurType);
10066 bool NotUnity =
10067 CheckArrayExpressionDoesNotReferToUnitySize(SemaRef, CurE, CurType);
10068
10069 if (AllowWholeSizeArraySection && AllowUnitySizeArraySection) {
10070 // Any array section is currently allowed.
10071 //
10072 // If this array section refers to the whole dimension we can still
10073 // accept other array sections before this one, except if the base is a
10074 // pointer. Otherwise, only unitary sections are accepted.
10075 if (NotWhole || IsPointer)
10076 AllowWholeSizeArraySection = false;
10077 } else if ((AllowUnitySizeArraySection && NotUnity) ||
10078 (AllowWholeSizeArraySection && NotWhole)) {
10079 // A unity or whole array section is not allowed and that is not
10080 // compatible with the properties of the current array section.
10081 SemaRef.Diag(
10082 ELoc, diag::err_array_section_does_not_specify_contiguous_storage)
10083 << CurE->getSourceRange();
10084 break;
10085 }
10086
10087 // Record the component - we don't have any declaration associated.
10088 CurComponents.push_back(
10089 OMPClauseMappableExprCommon::MappableComponent(CurE, nullptr));
10090 continue;
10091 }
10092
10093 // If nothing else worked, this is not a valid map clause expression.
10094 SemaRef.Diag(ELoc,
10095 diag::err_omp_expected_named_var_member_or_array_expression)
10096 << ERange;
10097 break;
10098 }
10099
10100 return RelevantExpr;
10101}
10102
10103// Return true if expression E associated with value VD has conflicts with other
10104// map information.
10105static bool CheckMapConflicts(
10106 Sema &SemaRef, DSAStackTy *DSAS, ValueDecl *VD, Expr *E,
10107 bool CurrentRegionOnly,
10108 OMPClauseMappableExprCommon::MappableExprComponentListRef CurComponents,
10109 OpenMPClauseKind CKind) {
10110 assert(VD && E)((VD && E) ? static_cast<void> (0) : __assert_fail
("VD && E", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10110, __PRETTY_FUNCTION__));
10111 SourceLocation ELoc = E->getExprLoc();
10112 SourceRange ERange = E->getSourceRange();
10113
10114 // In order to easily check the conflicts we need to match each component of
10115 // the expression under test with the components of the expressions that are
10116 // already in the stack.
10117
10118 assert(!CurComponents.empty() && "Map clause expression with no components!")((!CurComponents.empty() && "Map clause expression with no components!"
) ? static_cast<void> (0) : __assert_fail ("!CurComponents.empty() && \"Map clause expression with no components!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10118, __PRETTY_FUNCTION__));
10119 assert(CurComponents.back().getAssociatedDeclaration() == VD &&((CurComponents.back().getAssociatedDeclaration() == VD &&
"Map clause expression with unexpected base!") ? static_cast
<void> (0) : __assert_fail ("CurComponents.back().getAssociatedDeclaration() == VD && \"Map clause expression with unexpected base!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10120, __PRETTY_FUNCTION__))
10120 "Map clause expression with unexpected base!")((CurComponents.back().getAssociatedDeclaration() == VD &&
"Map clause expression with unexpected base!") ? static_cast
<void> (0) : __assert_fail ("CurComponents.back().getAssociatedDeclaration() == VD && \"Map clause expression with unexpected base!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10120, __PRETTY_FUNCTION__));
10121
10122 // Variables to help detecting enclosing problems in data environment nests.
10123 bool IsEnclosedByDataEnvironmentExpr = false;
10124 const Expr *EnclosingExpr = nullptr;
10125
10126 bool FoundError = DSAS->checkMappableExprComponentListsForDecl(
10127 VD, CurrentRegionOnly,
10128 [&](OMPClauseMappableExprCommon::MappableExprComponentListRef
10129 StackComponents) -> bool {
10130
10131 assert(!StackComponents.empty() &&((!StackComponents.empty() && "Map clause expression with no components!"
) ? static_cast<void> (0) : __assert_fail ("!StackComponents.empty() && \"Map clause expression with no components!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10132, __PRETTY_FUNCTION__))
10132 "Map clause expression with no components!")((!StackComponents.empty() && "Map clause expression with no components!"
) ? static_cast<void> (0) : __assert_fail ("!StackComponents.empty() && \"Map clause expression with no components!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10132, __PRETTY_FUNCTION__));
10133 assert(StackComponents.back().getAssociatedDeclaration() == VD &&((StackComponents.back().getAssociatedDeclaration() == VD &&
"Map clause expression with unexpected base!") ? static_cast
<void> (0) : __assert_fail ("StackComponents.back().getAssociatedDeclaration() == VD && \"Map clause expression with unexpected base!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10134, __PRETTY_FUNCTION__))
10134 "Map clause expression with unexpected base!")((StackComponents.back().getAssociatedDeclaration() == VD &&
"Map clause expression with unexpected base!") ? static_cast
<void> (0) : __assert_fail ("StackComponents.back().getAssociatedDeclaration() == VD && \"Map clause expression with unexpected base!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10134, __PRETTY_FUNCTION__));
10135
10136 // The whole expression in the stack.
10137 auto *RE = StackComponents.front().getAssociatedExpression();
10138
10139 // Expressions must start from the same base. Here we detect at which
10140 // point both expressions diverge from each other and see if we can
10141 // detect if the memory referred to both expressions is contiguous and
10142 // do not overlap.
10143 auto CI = CurComponents.rbegin();
10144 auto CE = CurComponents.rend();
10145 auto SI = StackComponents.rbegin();
10146 auto SE = StackComponents.rend();
10147 for (; CI != CE && SI != SE; ++CI, ++SI) {
10148
10149 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.3]
10150 // At most one list item can be an array item derived from a given
10151 // variable in map clauses of the same construct.
10152 if (CurrentRegionOnly &&
10153 (isa<ArraySubscriptExpr>(CI->getAssociatedExpression()) ||
10154 isa<OMPArraySectionExpr>(CI->getAssociatedExpression())) &&
10155 (isa<ArraySubscriptExpr>(SI->getAssociatedExpression()) ||
10156 isa<OMPArraySectionExpr>(SI->getAssociatedExpression()))) {
10157 SemaRef.Diag(CI->getAssociatedExpression()->getExprLoc(),
10158 diag::err_omp_multiple_array_items_in_map_clause)
10159 << CI->getAssociatedExpression()->getSourceRange();
10160 SemaRef.Diag(SI->getAssociatedExpression()->getExprLoc(),
10161 diag::note_used_here)
10162 << SI->getAssociatedExpression()->getSourceRange();
10163 return true;
10164 }
10165
10166 // Do both expressions have the same kind?
10167 if (CI->getAssociatedExpression()->getStmtClass() !=
10168 SI->getAssociatedExpression()->getStmtClass())
10169 break;
10170
10171 // Are we dealing with different variables/fields?
10172 if (CI->getAssociatedDeclaration() != SI->getAssociatedDeclaration())
10173 break;
10174 }
10175
10176 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.4]
10177 // List items of map clauses in the same construct must not share
10178 // original storage.
10179 //
10180 // If the expressions are exactly the same or one is a subset of the
10181 // other, it means they are sharing storage.
10182 if (CI == CE && SI == SE) {
10183 if (CurrentRegionOnly) {
10184 if (CKind == OMPC_map)
10185 SemaRef.Diag(ELoc, diag::err_omp_map_shared_storage) << ERange;
10186 else {
10187 assert(CKind == OMPC_to || CKind == OMPC_from)((CKind == OMPC_to || CKind == OMPC_from) ? static_cast<void
> (0) : __assert_fail ("CKind == OMPC_to || CKind == OMPC_from"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10187, __PRETTY_FUNCTION__));
10188 SemaRef.Diag(ELoc, diag::err_omp_once_referenced_in_target_update)
10189 << ERange;
10190 }
10191 SemaRef.Diag(RE->getExprLoc(), diag::note_used_here)
10192 << RE->getSourceRange();
10193 return true;
10194 } else {
10195 // If we find the same expression in the enclosing data environment,
10196 // that is legal.
10197 IsEnclosedByDataEnvironmentExpr = true;
10198 return false;
10199 }
10200 }
10201
10202 QualType DerivedType =
10203 std::prev(CI)->getAssociatedDeclaration()->getType();
10204 SourceLocation DerivedLoc =
10205 std::prev(CI)->getAssociatedExpression()->getExprLoc();
10206
10207 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C++, p.1]
10208 // If the type of a list item is a reference to a type T then the type
10209 // will be considered to be T for all purposes of this clause.
10210 DerivedType = DerivedType.getNonReferenceType();
10211
10212 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C/C++, p.1]
10213 // A variable for which the type is pointer and an array section
10214 // derived from that variable must not appear as list items of map
10215 // clauses of the same construct.
10216 //
10217 // Also, cover one of the cases in:
10218 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.5]
10219 // If any part of the original storage of a list item has corresponding
10220 // storage in the device data environment, all of the original storage
10221 // must have corresponding storage in the device data environment.
10222 //
10223 if (DerivedType->isAnyPointerType()) {
10224 if (CI == CE || SI == SE) {
10225 SemaRef.Diag(
10226 DerivedLoc,
10227 diag::err_omp_pointer_mapped_along_with_derived_section)
10228 << DerivedLoc;
10229 } else {
10230 assert(CI != CE && SI != SE)((CI != CE && SI != SE) ? static_cast<void> (0)
: __assert_fail ("CI != CE && SI != SE", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10230, __PRETTY_FUNCTION__));
10231 SemaRef.Diag(DerivedLoc, diag::err_omp_same_pointer_derreferenced)
10232 << DerivedLoc;
10233 }
10234 SemaRef.Diag(RE->getExprLoc(), diag::note_used_here)
10235 << RE->getSourceRange();
10236 return true;
10237 }
10238
10239 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.4]
10240 // List items of map clauses in the same construct must not share
10241 // original storage.
10242 //
10243 // An expression is a subset of the other.
10244 if (CurrentRegionOnly && (CI == CE || SI == SE)) {
10245 if (CKind == OMPC_map)
10246 SemaRef.Diag(ELoc, diag::err_omp_map_shared_storage) << ERange;
10247 else {
10248 assert(CKind == OMPC_to || CKind == OMPC_from)((CKind == OMPC_to || CKind == OMPC_from) ? static_cast<void
> (0) : __assert_fail ("CKind == OMPC_to || CKind == OMPC_from"
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10248, __PRETTY_FUNCTION__));
10249 SemaRef.Diag(ELoc, diag::err_omp_once_referenced_in_target_update)
10250 << ERange;
10251 }
10252 SemaRef.Diag(RE->getExprLoc(), diag::note_used_here)
10253 << RE->getSourceRange();
10254 return true;
10255 }
10256
10257 // The current expression uses the same base as other expression in the
10258 // data environment but does not contain it completely.
10259 if (!CurrentRegionOnly && SI != SE)
10260 EnclosingExpr = RE;
10261
10262 // The current expression is a subset of the expression in the data
10263 // environment.
10264 IsEnclosedByDataEnvironmentExpr |=
10265 (!CurrentRegionOnly && CI != CE && SI == SE);
10266
10267 return false;
10268 });
10269
10270 if (CurrentRegionOnly)
10271 return FoundError;
10272
10273 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.5]
10274 // If any part of the original storage of a list item has corresponding
10275 // storage in the device data environment, all of the original storage must
10276 // have corresponding storage in the device data environment.
10277 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.6]
10278 // If a list item is an element of a structure, and a different element of
10279 // the structure has a corresponding list item in the device data environment
10280 // prior to a task encountering the construct associated with the map clause,
10281 // then the list item must also have a corresponding list item in the device
10282 // data environment prior to the task encountering the construct.
10283 //
10284 if (EnclosingExpr && !IsEnclosedByDataEnvironmentExpr) {
10285 SemaRef.Diag(ELoc,
10286 diag::err_omp_original_storage_is_shared_and_does_not_contain)
10287 << ERange;
10288 SemaRef.Diag(EnclosingExpr->getExprLoc(), diag::note_used_here)
10289 << EnclosingExpr->getSourceRange();
10290 return true;
10291 }
10292
10293 return FoundError;
10294}
10295
10296namespace {
10297// Utility struct that gathers all the related lists associated with a mappable
10298// expression.
10299struct MappableVarListInfo final {
10300 // The list of expressions.
10301 ArrayRef<Expr *> VarList;
10302 // The list of processed expressions.
10303 SmallVector<Expr *, 16> ProcessedVarList;
10304 // The mappble components for each expression.
10305 OMPClauseMappableExprCommon::MappableExprComponentLists VarComponents;
10306 // The base declaration of the variable.
10307 SmallVector<ValueDecl *, 16> VarBaseDeclarations;
10308
10309 MappableVarListInfo(ArrayRef<Expr *> VarList) : VarList(VarList) {
10310 // We have a list of components and base declarations for each entry in the
10311 // variable list.
10312 VarComponents.reserve(VarList.size());
10313 VarBaseDeclarations.reserve(VarList.size());
10314 }
10315};
10316}
10317
10318// Check the validity of the provided variable list for the provided clause kind
10319// \a CKind. In the check process the valid expressions, and mappable expression
10320// components and variables are extracted and used to fill \a Vars,
10321// \a ClauseComponents, and \a ClauseBaseDeclarations. \a MapType and
10322// \a IsMapTypeImplicit are expected to be valid if the clause kind is 'map'.
10323static void
10324checkMappableExpressionList(Sema &SemaRef, DSAStackTy *DSAS,
10325 OpenMPClauseKind CKind, MappableVarListInfo &MVLI,
10326 SourceLocation StartLoc,
10327 OpenMPMapClauseKind MapType = OMPC_MAP_unknown,
10328 bool IsMapTypeImplicit = false) {
10329 // We only expect mappable expressions in 'to', 'from', and 'map' clauses.
10330 assert((CKind == OMPC_map || CKind == OMPC_to || CKind == OMPC_from) &&(((CKind == OMPC_map || CKind == OMPC_to || CKind == OMPC_from
) && "Unexpected clause kind with mappable expressions!"
) ? static_cast<void> (0) : __assert_fail ("(CKind == OMPC_map || CKind == OMPC_to || CKind == OMPC_from) && \"Unexpected clause kind with mappable expressions!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10331, __PRETTY_FUNCTION__))
10331 "Unexpected clause kind with mappable expressions!")(((CKind == OMPC_map || CKind == OMPC_to || CKind == OMPC_from
) && "Unexpected clause kind with mappable expressions!"
) ? static_cast<void> (0) : __assert_fail ("(CKind == OMPC_map || CKind == OMPC_to || CKind == OMPC_from) && \"Unexpected clause kind with mappable expressions!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10331, __PRETTY_FUNCTION__));
10332
10333 // Keep track of the mappable components and base declarations in this clause.
10334 // Each entry in the list is going to have a list of components associated. We
10335 // record each set of the components so that we can build the clause later on.
10336 // In the end we should have the same amount of declarations and component
10337 // lists.
10338
10339 for (auto &RE : MVLI.VarList) {
10340 assert(RE && "Null expr in omp to/from/map clause")((RE && "Null expr in omp to/from/map clause") ? static_cast
<void> (0) : __assert_fail ("RE && \"Null expr in omp to/from/map clause\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10340, __PRETTY_FUNCTION__));
10341 SourceLocation ELoc = RE->getExprLoc();
10342
10343 auto *VE = RE->IgnoreParenLValueCasts();
10344
10345 if (VE->isValueDependent() || VE->isTypeDependent() ||
10346 VE->isInstantiationDependent() ||
10347 VE->containsUnexpandedParameterPack()) {
10348 // We can only analyze this information once the missing information is
10349 // resolved.
10350 MVLI.ProcessedVarList.push_back(RE);
10351 continue;
10352 }
10353
10354 auto *SimpleExpr = RE->IgnoreParenCasts();
10355
10356 if (!RE->IgnoreParenImpCasts()->isLValue()) {
10357 SemaRef.Diag(ELoc,
10358 diag::err_omp_expected_named_var_member_or_array_expression)
10359 << RE->getSourceRange();
10360 continue;
10361 }
10362
10363 OMPClauseMappableExprCommon::MappableExprComponentList CurComponents;
10364 ValueDecl *CurDeclaration = nullptr;
10365
10366 // Obtain the array or member expression bases if required. Also, fill the
10367 // components array with all the components identified in the process.
10368 auto *BE =
10369 CheckMapClauseExpressionBase(SemaRef, SimpleExpr, CurComponents, CKind);
10370 if (!BE)
10371 continue;
10372
10373 assert(!CurComponents.empty() &&((!CurComponents.empty() && "Invalid mappable expression information."
) ? static_cast<void> (0) : __assert_fail ("!CurComponents.empty() && \"Invalid mappable expression information.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10374, __PRETTY_FUNCTION__))
10374 "Invalid mappable expression information.")((!CurComponents.empty() && "Invalid mappable expression information."
) ? static_cast<void> (0) : __assert_fail ("!CurComponents.empty() && \"Invalid mappable expression information.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10374, __PRETTY_FUNCTION__));
10375
10376 // For the following checks, we rely on the base declaration which is
10377 // expected to be associated with the last component. The declaration is
10378 // expected to be a variable or a field (if 'this' is being mapped).
10379 CurDeclaration = CurComponents.back().getAssociatedDeclaration();
10380 assert(CurDeclaration && "Null decl on map clause.")((CurDeclaration && "Null decl on map clause.") ? static_cast
<void> (0) : __assert_fail ("CurDeclaration && \"Null decl on map clause.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10380, __PRETTY_FUNCTION__));
10381 assert(((CurDeclaration->isCanonicalDecl() && "Expecting components to have associated only canonical declarations."
) ? static_cast<void> (0) : __assert_fail ("CurDeclaration->isCanonicalDecl() && \"Expecting components to have associated only canonical declarations.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10383, __PRETTY_FUNCTION__))
10382 CurDeclaration->isCanonicalDecl() &&((CurDeclaration->isCanonicalDecl() && "Expecting components to have associated only canonical declarations."
) ? static_cast<void> (0) : __assert_fail ("CurDeclaration->isCanonicalDecl() && \"Expecting components to have associated only canonical declarations.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10383, __PRETTY_FUNCTION__))
10383 "Expecting components to have associated only canonical declarations.")((CurDeclaration->isCanonicalDecl() && "Expecting components to have associated only canonical declarations."
) ? static_cast<void> (0) : __assert_fail ("CurDeclaration->isCanonicalDecl() && \"Expecting components to have associated only canonical declarations.\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10383, __PRETTY_FUNCTION__));
10384
10385 auto *VD = dyn_cast<VarDecl>(CurDeclaration);
10386 auto *FD = dyn_cast<FieldDecl>(CurDeclaration);
10387
10388 assert((VD || FD) && "Only variables or fields are expected here!")(((VD || FD) && "Only variables or fields are expected here!"
) ? static_cast<void> (0) : __assert_fail ("(VD || FD) && \"Only variables or fields are expected here!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10388, __PRETTY_FUNCTION__));
10389 (void)FD;
10390
10391 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.10]
10392 // threadprivate variables cannot appear in a map clause.
10393 // OpenMP 4.5 [2.10.5, target update Construct]
10394 // threadprivate variables cannot appear in a from clause.
10395 if (VD && DSAS->isThreadPrivate(VD)) {
10396 auto DVar = DSAS->getTopDSA(VD, false);
10397 SemaRef.Diag(ELoc, diag::err_omp_threadprivate_in_clause)
10398 << getOpenMPClauseName(CKind);
10399 ReportOriginalDSA(SemaRef, DSAS, VD, DVar);
10400 continue;
10401 }
10402
10403 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.9]
10404 // A list item cannot appear in both a map clause and a data-sharing
10405 // attribute clause on the same construct.
10406
10407 // Check conflicts with other map clause expressions. We check the conflicts
10408 // with the current construct separately from the enclosing data
10409 // environment, because the restrictions are different. We only have to
10410 // check conflicts across regions for the map clauses.
10411 if (CheckMapConflicts(SemaRef, DSAS, CurDeclaration, SimpleExpr,
10412 /*CurrentRegionOnly=*/true, CurComponents, CKind))
10413 break;
10414 if (CKind == OMPC_map &&
10415 CheckMapConflicts(SemaRef, DSAS, CurDeclaration, SimpleExpr,
10416 /*CurrentRegionOnly=*/false, CurComponents, CKind))
10417 break;
10418
10419 // OpenMP 4.5 [2.10.5, target update Construct]
10420 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, C++, p.1]
10421 // If the type of a list item is a reference to a type T then the type will
10422 // be considered to be T for all purposes of this clause.
10423 QualType Type = CurDeclaration->getType().getNonReferenceType();
10424
10425 // OpenMP 4.5 [2.10.5, target update Construct, Restrictions, p.4]
10426 // A list item in a to or from clause must have a mappable type.
10427 // OpenMP 4.5 [2.15.5.1, map Clause, Restrictions, p.9]
10428 // A list item must have a mappable type.
10429 if (!CheckTypeMappable(VE->getExprLoc(), VE->getSourceRange(), SemaRef,
10430 DSAS, Type))
10431 continue;
10432
10433 if (CKind == OMPC_map) {
10434 // target enter data
10435 // OpenMP [2.10.2, Restrictions, p. 99]
10436 // A map-type must be specified in all map clauses and must be either
10437 // to or alloc.
10438 OpenMPDirectiveKind DKind = DSAS->getCurrentDirective();
10439 if (DKind == OMPD_target_enter_data &&
10440 !(MapType == OMPC_MAP_to || MapType == OMPC_MAP_alloc)) {
10441 SemaRef.Diag(StartLoc, diag::err_omp_invalid_map_type_for_directive)
10442 << (IsMapTypeImplicit ? 1 : 0)
10443 << getOpenMPSimpleClauseTypeName(OMPC_map, MapType)
10444 << getOpenMPDirectiveName(DKind);
10445 continue;
10446 }
10447
10448 // target exit_data
10449 // OpenMP [2.10.3, Restrictions, p. 102]
10450 // A map-type must be specified in all map clauses and must be either
10451 // from, release, or delete.
10452 if (DKind == OMPD_target_exit_data &&
10453 !(MapType == OMPC_MAP_from || MapType == OMPC_MAP_release ||
10454 MapType == OMPC_MAP_delete)) {
10455 SemaRef.Diag(StartLoc, diag::err_omp_invalid_map_type_for_directive)
10456 << (IsMapTypeImplicit ? 1 : 0)
10457 << getOpenMPSimpleClauseTypeName(OMPC_map, MapType)
10458 << getOpenMPDirectiveName(DKind);
10459 continue;
10460 }
10461
10462 // OpenMP 4.5 [2.15.5.1, Restrictions, p.3]
10463 // A list item cannot appear in both a map clause and a data-sharing
10464 // attribute clause on the same construct
10465 if (DKind == OMPD_target && VD) {
10466 auto DVar = DSAS->getTopDSA(VD, false);
10467 if (isOpenMPPrivate(DVar.CKind)) {
10468 SemaRef.Diag(ELoc, diag::err_omp_variable_in_map_and_dsa)
10469 << getOpenMPClauseName(DVar.CKind)
10470 << getOpenMPDirectiveName(DSAS->getCurrentDirective());
10471 ReportOriginalDSA(SemaRef, DSAS, CurDeclaration, DVar);
10472 continue;
10473 }
10474 }
10475 }
10476
10477 // Save the current expression.
10478 MVLI.ProcessedVarList.push_back(RE);
10479
10480 // Store the components in the stack so that they can be used to check
10481 // against other clauses later on.
10482 DSAS->addMappableExpressionComponents(CurDeclaration, CurComponents);
10483
10484 // Save the components and declaration to create the clause. For purposes of
10485 // the clause creation, any component list that has has base 'this' uses
10486 // null as base declaration.
10487 MVLI.VarComponents.resize(MVLI.VarComponents.size() + 1);
10488 MVLI.VarComponents.back().append(CurComponents.begin(),
10489 CurComponents.end());
10490 MVLI.VarBaseDeclarations.push_back(isa<MemberExpr>(BE) ? nullptr
10491 : CurDeclaration);
10492 }
10493}
10494
10495OMPClause *
10496Sema::ActOnOpenMPMapClause(OpenMPMapClauseKind MapTypeModifier,
10497 OpenMPMapClauseKind MapType, bool IsMapTypeImplicit,
10498 SourceLocation MapLoc, SourceLocation ColonLoc,
10499 ArrayRef<Expr *> VarList, SourceLocation StartLoc,
10500 SourceLocation LParenLoc, SourceLocation EndLoc) {
10501 MappableVarListInfo MVLI(VarList);
10502 checkMappableExpressionList(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), OMPC_map, MVLI, StartLoc,
10503 MapType, IsMapTypeImplicit);
10504
10505 // We need to produce a map clause even if we don't have variables so that
10506 // other diagnostics related with non-existing map clauses are accurate.
10507 return OMPMapClause::Create(Context, StartLoc, LParenLoc, EndLoc,
10508 MVLI.ProcessedVarList, MVLI.VarBaseDeclarations,
10509 MVLI.VarComponents, MapTypeModifier, MapType,
10510 IsMapTypeImplicit, MapLoc);
10511}
10512
10513QualType Sema::ActOnOpenMPDeclareReductionType(SourceLocation TyLoc,
10514 TypeResult ParsedType) {
10515 assert(ParsedType.isUsable())((ParsedType.isUsable()) ? static_cast<void> (0) : __assert_fail
("ParsedType.isUsable()", "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10515, __PRETTY_FUNCTION__));
10516
10517 QualType ReductionType = GetTypeFromParser(ParsedType.get());
10518 if (ReductionType.isNull())
10519 return QualType();
10520
10521 // [OpenMP 4.0], 2.15 declare reduction Directive, Restrictions, C\C++
10522 // A type name in a declare reduction directive cannot be a function type, an
10523 // array type, a reference type, or a type qualified with const, volatile or
10524 // restrict.
10525 if (ReductionType.hasQualifiers()) {
10526 Diag(TyLoc, diag::err_omp_reduction_wrong_type) << 0;
10527 return QualType();
10528 }
10529
10530 if (ReductionType->isFunctionType()) {
10531 Diag(TyLoc, diag::err_omp_reduction_wrong_type) << 1;
10532 return QualType();
10533 }
10534 if (ReductionType->isReferenceType()) {
10535 Diag(TyLoc, diag::err_omp_reduction_wrong_type) << 2;
10536 return QualType();
10537 }
10538 if (ReductionType->isArrayType()) {
10539 Diag(TyLoc, diag::err_omp_reduction_wrong_type) << 3;
10540 return QualType();
10541 }
10542 return ReductionType;
10543}
10544
10545Sema::DeclGroupPtrTy Sema::ActOnOpenMPDeclareReductionDirectiveStart(
10546 Scope *S, DeclContext *DC, DeclarationName Name,
10547 ArrayRef<std::pair<QualType, SourceLocation>> ReductionTypes,
10548 AccessSpecifier AS, Decl *PrevDeclInScope) {
10549 SmallVector<Decl *, 8> Decls;
10550 Decls.reserve(ReductionTypes.size());
10551
10552 LookupResult Lookup(*this, Name, SourceLocation(), LookupOMPReductionName,
10553 ForRedeclaration);
10554 // [OpenMP 4.0], 2.15 declare reduction Directive, Restrictions
10555 // A reduction-identifier may not be re-declared in the current scope for the
10556 // same type or for a type that is compatible according to the base language
10557 // rules.
10558 llvm::DenseMap<QualType, SourceLocation> PreviousRedeclTypes;
10559 OMPDeclareReductionDecl *PrevDRD = nullptr;
10560 bool InCompoundScope = true;
10561 if (S != nullptr) {
10562 // Find previous declaration with the same name not referenced in other
10563 // declarations.
10564 FunctionScopeInfo *ParentFn = getEnclosingFunction();
10565 InCompoundScope =
10566 (ParentFn != nullptr) && !ParentFn->CompoundScopes.empty();
10567 LookupName(Lookup, S);
10568 FilterLookupForScope(Lookup, DC, S, /*ConsiderLinkage=*/false,
10569 /*AllowInlineNamespace=*/false);
10570 llvm::DenseMap<OMPDeclareReductionDecl *, bool> UsedAsPrevious;
10571 auto Filter = Lookup.makeFilter();
10572 while (Filter.hasNext()) {
10573 auto *PrevDecl = cast<OMPDeclareReductionDecl>(Filter.next());
10574 if (InCompoundScope) {
10575 auto I = UsedAsPrevious.find(PrevDecl);
10576 if (I == UsedAsPrevious.end())
10577 UsedAsPrevious[PrevDecl] = false;
10578 if (auto *D = PrevDecl->getPrevDeclInScope())
10579 UsedAsPrevious[D] = true;
10580 }
10581 PreviousRedeclTypes[PrevDecl->getType().getCanonicalType()] =
10582 PrevDecl->getLocation();
10583 }
10584 Filter.done();
10585 if (InCompoundScope) {
10586 for (auto &PrevData : UsedAsPrevious) {
10587 if (!PrevData.second) {
10588 PrevDRD = PrevData.first;
10589 break;
10590 }
10591 }
10592 }
10593 } else if (PrevDeclInScope != nullptr) {
10594 auto *PrevDRDInScope = PrevDRD =
10595 cast<OMPDeclareReductionDecl>(PrevDeclInScope);
10596 do {
10597 PreviousRedeclTypes[PrevDRDInScope->getType().getCanonicalType()] =
10598 PrevDRDInScope->getLocation();
10599 PrevDRDInScope = PrevDRDInScope->getPrevDeclInScope();
10600 } while (PrevDRDInScope != nullptr);
10601 }
10602 for (auto &TyData : ReductionTypes) {
10603 auto I = PreviousRedeclTypes.find(TyData.first.getCanonicalType());
10604 bool Invalid = false;
10605 if (I != PreviousRedeclTypes.end()) {
10606 Diag(TyData.second, diag::err_omp_declare_reduction_redefinition)
10607 << TyData.first;
10608 Diag(I->second, diag::note_previous_definition);
10609 Invalid = true;
10610 }
10611 PreviousRedeclTypes[TyData.first.getCanonicalType()] = TyData.second;
10612 auto *DRD = OMPDeclareReductionDecl::Create(Context, DC, TyData.second,
10613 Name, TyData.first, PrevDRD);
10614 DC->addDecl(DRD);
10615 DRD->setAccess(AS);
10616 Decls.push_back(DRD);
10617 if (Invalid)
10618 DRD->setInvalidDecl();
10619 else
10620 PrevDRD = DRD;
10621 }
10622
10623 return DeclGroupPtrTy::make(
10624 DeclGroupRef::Create(Context, Decls.begin(), Decls.size()));
10625}
10626
10627void Sema::ActOnOpenMPDeclareReductionCombinerStart(Scope *S, Decl *D) {
10628 auto *DRD = cast<OMPDeclareReductionDecl>(D);
10629
10630 // Enter new function scope.
10631 PushFunctionScope();
10632 getCurFunction()->setHasBranchProtectedScope();
10633 getCurFunction()->setHasOMPDeclareReductionCombiner();
10634
10635 if (S != nullptr)
10636 PushDeclContext(S, DRD);
10637 else
10638 CurContext = DRD;
10639
10640 PushExpressionEvaluationContext(PotentiallyEvaluated);
10641
10642 QualType ReductionType = DRD->getType();
10643 // Create 'T* omp_parm;T omp_in;'. All references to 'omp_in' will
10644 // be replaced by '*omp_parm' during codegen. This required because 'omp_in'
10645 // uses semantics of argument handles by value, but it should be passed by
10646 // reference. C lang does not support references, so pass all parameters as
10647 // pointers.
10648 // Create 'T omp_in;' variable.
10649 auto *OmpInParm =
10650 buildVarDecl(*this, D->getLocation(), ReductionType, "omp_in");
10651 // Create 'T* omp_parm;T omp_out;'. All references to 'omp_out' will
10652 // be replaced by '*omp_parm' during codegen. This required because 'omp_out'
10653 // uses semantics of argument handles by value, but it should be passed by
10654 // reference. C lang does not support references, so pass all parameters as
10655 // pointers.
10656 // Create 'T omp_out;' variable.
10657 auto *OmpOutParm =
10658 buildVarDecl(*this, D->getLocation(), ReductionType, "omp_out");
10659 if (S != nullptr) {
10660 PushOnScopeChains(OmpInParm, S);
10661 PushOnScopeChains(OmpOutParm, S);
10662 } else {
10663 DRD->addDecl(OmpInParm);
10664 DRD->addDecl(OmpOutParm);
10665 }
10666}
10667
10668void Sema::ActOnOpenMPDeclareReductionCombinerEnd(Decl *D, Expr *Combiner) {
10669 auto *DRD = cast<OMPDeclareReductionDecl>(D);
10670 DiscardCleanupsInEvaluationContext();
10671 PopExpressionEvaluationContext();
10672
10673 PopDeclContext();
10674 PopFunctionScopeInfo();
10675
10676 if (Combiner != nullptr)
10677 DRD->setCombiner(Combiner);
10678 else
10679 DRD->setInvalidDecl();
10680}
10681
10682void Sema::ActOnOpenMPDeclareReductionInitializerStart(Scope *S, Decl *D) {
10683 auto *DRD = cast<OMPDeclareReductionDecl>(D);
10684
10685 // Enter new function scope.
10686 PushFunctionScope();
10687 getCurFunction()->setHasBranchProtectedScope();
10688
10689 if (S != nullptr)
10690 PushDeclContext(S, DRD);
10691 else
10692 CurContext = DRD;
10693
10694 PushExpressionEvaluationContext(PotentiallyEvaluated);
10695
10696 QualType ReductionType = DRD->getType();
10697 // Create 'T* omp_parm;T omp_priv;'. All references to 'omp_priv' will
10698 // be replaced by '*omp_parm' during codegen. This required because 'omp_priv'
10699 // uses semantics of argument handles by value, but it should be passed by
10700 // reference. C lang does not support references, so pass all parameters as
10701 // pointers.
10702 // Create 'T omp_priv;' variable.
10703 auto *OmpPrivParm =
10704 buildVarDecl(*this, D->getLocation(), ReductionType, "omp_priv");
10705 // Create 'T* omp_parm;T omp_orig;'. All references to 'omp_orig' will
10706 // be replaced by '*omp_parm' during codegen. This required because 'omp_orig'
10707 // uses semantics of argument handles by value, but it should be passed by
10708 // reference. C lang does not support references, so pass all parameters as
10709 // pointers.
10710 // Create 'T omp_orig;' variable.
10711 auto *OmpOrigParm =
10712 buildVarDecl(*this, D->getLocation(), ReductionType, "omp_orig");
10713 if (S != nullptr) {
10714 PushOnScopeChains(OmpPrivParm, S);
10715 PushOnScopeChains(OmpOrigParm, S);
10716 } else {
10717 DRD->addDecl(OmpPrivParm);
10718 DRD->addDecl(OmpOrigParm);
10719 }
10720}
10721
10722void Sema::ActOnOpenMPDeclareReductionInitializerEnd(Decl *D,
10723 Expr *Initializer) {
10724 auto *DRD = cast<OMPDeclareReductionDecl>(D);
10725 DiscardCleanupsInEvaluationContext();
10726 PopExpressionEvaluationContext();
10727
10728 PopDeclContext();
10729 PopFunctionScopeInfo();
10730
10731 if (Initializer != nullptr)
10732 DRD->setInitializer(Initializer);
10733 else
10734 DRD->setInvalidDecl();
10735}
10736
10737Sema::DeclGroupPtrTy Sema::ActOnOpenMPDeclareReductionDirectiveEnd(
10738 Scope *S, DeclGroupPtrTy DeclReductions, bool IsValid) {
10739 for (auto *D : DeclReductions.get()) {
10740 if (IsValid) {
10741 auto *DRD = cast<OMPDeclareReductionDecl>(D);
10742 if (S != nullptr)
10743 PushOnScopeChains(DRD, S, /*AddToContext=*/false);
10744 } else
10745 D->setInvalidDecl();
10746 }
10747 return DeclReductions;
10748}
10749
10750OMPClause *Sema::ActOnOpenMPNumTeamsClause(Expr *NumTeams,
10751 SourceLocation StartLoc,
10752 SourceLocation LParenLoc,
10753 SourceLocation EndLoc) {
10754 Expr *ValExpr = NumTeams;
10755
10756 // OpenMP [teams Constrcut, Restrictions]
10757 // The num_teams expression must evaluate to a positive integer value.
10758 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_num_teams,
10759 /*StrictlyPositive=*/true))
10760 return nullptr;
10761
10762 return new (Context) OMPNumTeamsClause(ValExpr, StartLoc, LParenLoc, EndLoc);
10763}
10764
10765OMPClause *Sema::ActOnOpenMPThreadLimitClause(Expr *ThreadLimit,
10766 SourceLocation StartLoc,
10767 SourceLocation LParenLoc,
10768 SourceLocation EndLoc) {
10769 Expr *ValExpr = ThreadLimit;
10770
10771 // OpenMP [teams Constrcut, Restrictions]
10772 // The thread_limit expression must evaluate to a positive integer value.
10773 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_thread_limit,
10774 /*StrictlyPositive=*/true))
10775 return nullptr;
10776
10777 return new (Context) OMPThreadLimitClause(ValExpr, StartLoc, LParenLoc,
10778 EndLoc);
10779}
10780
10781OMPClause *Sema::ActOnOpenMPPriorityClause(Expr *Priority,
10782 SourceLocation StartLoc,
10783 SourceLocation LParenLoc,
10784 SourceLocation EndLoc) {
10785 Expr *ValExpr = Priority;
10786
10787 // OpenMP [2.9.1, task Constrcut]
10788 // The priority-value is a non-negative numerical scalar expression.
10789 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_priority,
10790 /*StrictlyPositive=*/false))
10791 return nullptr;
10792
10793 return new (Context) OMPPriorityClause(ValExpr, StartLoc, LParenLoc, EndLoc);
10794}
10795
10796OMPClause *Sema::ActOnOpenMPGrainsizeClause(Expr *Grainsize,
10797 SourceLocation StartLoc,
10798 SourceLocation LParenLoc,
10799 SourceLocation EndLoc) {
10800 Expr *ValExpr = Grainsize;
10801
10802 // OpenMP [2.9.2, taskloop Constrcut]
10803 // The parameter of the grainsize clause must be a positive integer
10804 // expression.
10805 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_grainsize,
10806 /*StrictlyPositive=*/true))
10807 return nullptr;
10808
10809 return new (Context) OMPGrainsizeClause(ValExpr, StartLoc, LParenLoc, EndLoc);
10810}
10811
10812OMPClause *Sema::ActOnOpenMPNumTasksClause(Expr *NumTasks,
10813 SourceLocation StartLoc,
10814 SourceLocation LParenLoc,
10815 SourceLocation EndLoc) {
10816 Expr *ValExpr = NumTasks;
10817
10818 // OpenMP [2.9.2, taskloop Constrcut]
10819 // The parameter of the num_tasks clause must be a positive integer
10820 // expression.
10821 if (!IsNonNegativeIntegerValue(ValExpr, *this, OMPC_num_tasks,
10822 /*StrictlyPositive=*/true))
10823 return nullptr;
10824
10825 return new (Context) OMPNumTasksClause(ValExpr, StartLoc, LParenLoc, EndLoc);
10826}
10827
10828OMPClause *Sema::ActOnOpenMPHintClause(Expr *Hint, SourceLocation StartLoc,
10829 SourceLocation LParenLoc,
10830 SourceLocation EndLoc) {
10831 // OpenMP [2.13.2, critical construct, Description]
10832 // ... where hint-expression is an integer constant expression that evaluates
10833 // to a valid lock hint.
10834 ExprResult HintExpr = VerifyPositiveIntegerConstantInClause(Hint, OMPC_hint);
10835 if (HintExpr.isInvalid())
10836 return nullptr;
10837 return new (Context)
10838 OMPHintClause(HintExpr.get(), StartLoc, LParenLoc, EndLoc);
10839}
10840
10841OMPClause *Sema::ActOnOpenMPDistScheduleClause(
10842 OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc,
10843 SourceLocation LParenLoc, SourceLocation KindLoc, SourceLocation CommaLoc,
10844 SourceLocation EndLoc) {
10845 if (Kind == OMPC_DIST_SCHEDULE_unknown) {
10846 std::string Values;
10847 Values += "'";
10848 Values += getOpenMPSimpleClauseTypeName(OMPC_dist_schedule, 0);
10849 Values += "'";
10850 Diag(KindLoc, diag::err_omp_unexpected_clause_value)
10851 << Values << getOpenMPClauseName(OMPC_dist_schedule);
10852 return nullptr;
10853 }
10854 Expr *ValExpr = ChunkSize;
10855 Stmt *HelperValStmt = nullptr;
10856 if (ChunkSize) {
10857 if (!ChunkSize->isValueDependent() && !ChunkSize->isTypeDependent() &&
10858 !ChunkSize->isInstantiationDependent() &&
10859 !ChunkSize->containsUnexpandedParameterPack()) {
10860 SourceLocation ChunkSizeLoc = ChunkSize->getLocStart();
10861 ExprResult Val =
10862 PerformOpenMPImplicitIntegerConversion(ChunkSizeLoc, ChunkSize);
10863 if (Val.isInvalid())
10864 return nullptr;
10865
10866 ValExpr = Val.get();
10867
10868 // OpenMP [2.7.1, Restrictions]
10869 // chunk_size must be a loop invariant integer expression with a positive
10870 // value.
10871 llvm::APSInt Result;
10872 if (ValExpr->isIntegerConstantExpr(Result, Context)) {
10873 if (Result.isSigned() && !Result.isStrictlyPositive()) {
10874 Diag(ChunkSizeLoc, diag::err_omp_negative_expression_in_clause)
10875 << "dist_schedule" << ChunkSize->getSourceRange();
10876 return nullptr;
10877 }
10878 } else if (isParallelOrTaskRegion(DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getCurrentDirective())) {
10879 llvm::MapVector<Expr *, DeclRefExpr *> Captures;
10880 ValExpr = tryBuildCapture(*this, ValExpr, Captures).get();
10881 HelperValStmt = buildPreInits(Context, Captures);
10882 }
10883 }
10884 }
10885
10886 return new (Context)
10887 OMPDistScheduleClause(StartLoc, LParenLoc, KindLoc, CommaLoc, EndLoc,
10888 Kind, ValExpr, HelperValStmt);
10889}
10890
10891OMPClause *Sema::ActOnOpenMPDefaultmapClause(
10892 OpenMPDefaultmapClauseModifier M, OpenMPDefaultmapClauseKind Kind,
10893 SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation MLoc,
10894 SourceLocation KindLoc, SourceLocation EndLoc) {
10895 // OpenMP 4.5 only supports 'defaultmap(tofrom: scalar)'
10896 if (M != OMPC_DEFAULTMAP_MODIFIER_tofrom ||
10897 Kind != OMPC_DEFAULTMAP_scalar) {
10898 std::string Value;
10899 SourceLocation Loc;
10900 Value += "'";
10901 if (M != OMPC_DEFAULTMAP_MODIFIER_tofrom) {
10902 Value += getOpenMPSimpleClauseTypeName(OMPC_defaultmap,
10903 OMPC_DEFAULTMAP_MODIFIER_tofrom);
10904 Loc = MLoc;
10905 } else {
10906 Value += getOpenMPSimpleClauseTypeName(OMPC_defaultmap,
10907 OMPC_DEFAULTMAP_scalar);
10908 Loc = KindLoc;
10909 }
10910 Value += "'";
10911 Diag(Loc, diag::err_omp_unexpected_clause_value)
10912 << Value << getOpenMPClauseName(OMPC_defaultmap);
10913 return nullptr;
10914 }
10915
10916 return new (Context)
10917 OMPDefaultmapClause(StartLoc, LParenLoc, MLoc, KindLoc, EndLoc, Kind, M);
10918}
10919
10920bool Sema::ActOnStartOpenMPDeclareTargetDirective(SourceLocation Loc) {
10921 DeclContext *CurLexicalContext = getCurLexicalContext();
10922 if (!CurLexicalContext->isFileContext() &&
10923 !CurLexicalContext->isExternCContext() &&
10924 !CurLexicalContext->isExternCXXContext()) {
10925 Diag(Loc, diag::err_omp_region_not_file_context);
10926 return false;
10927 }
10928 if (IsInOpenMPDeclareTargetContext) {
10929 Diag(Loc, diag::err_omp_enclosed_declare_target);
10930 return false;
10931 }
10932
10933 IsInOpenMPDeclareTargetContext = true;
10934 return true;
10935}
10936
10937void Sema::ActOnFinishOpenMPDeclareTargetDirective() {
10938 assert(IsInOpenMPDeclareTargetContext &&((IsInOpenMPDeclareTargetContext && "Unexpected ActOnFinishOpenMPDeclareTargetDirective"
) ? static_cast<void> (0) : __assert_fail ("IsInOpenMPDeclareTargetContext && \"Unexpected ActOnFinishOpenMPDeclareTargetDirective\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10939, __PRETTY_FUNCTION__))
10939 "Unexpected ActOnFinishOpenMPDeclareTargetDirective")((IsInOpenMPDeclareTargetContext && "Unexpected ActOnFinishOpenMPDeclareTargetDirective"
) ? static_cast<void> (0) : __assert_fail ("IsInOpenMPDeclareTargetContext && \"Unexpected ActOnFinishOpenMPDeclareTargetDirective\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.9~svn270899/tools/clang/lib/Sema/SemaOpenMP.cpp"
, 10939, __PRETTY_FUNCTION__));
10940
10941 IsInOpenMPDeclareTargetContext = false;
10942}
10943
10944void
10945Sema::ActOnOpenMPDeclareTargetName(Scope *CurScope, CXXScopeSpec &ScopeSpec,
10946 const DeclarationNameInfo &Id,
10947 OMPDeclareTargetDeclAttr::MapTypeTy MT,
10948 NamedDeclSetType &SameDirectiveDecls) {
10949 LookupResult Lookup(*this, Id, LookupOrdinaryName);
10950 LookupParsedName(Lookup, CurScope, &ScopeSpec, true);
10951
10952 if (Lookup.isAmbiguous())
10953 return;
10954 Lookup.suppressDiagnostics();
10955
10956 if (!Lookup.isSingleResult()) {
10957 if (TypoCorrection Corrected =
10958 CorrectTypo(Id, LookupOrdinaryName, CurScope, nullptr,
10959 llvm::make_unique<VarOrFuncDeclFilterCCC>(*this),
10960 CTK_ErrorRecovery)) {
10961 diagnoseTypo(Corrected, PDiag(diag::err_undeclared_var_use_suggest)
10962 << Id.getName());
10963 checkDeclIsAllowedInOpenMPTarget(nullptr, Corrected.getCorrectionDecl());
10964 return;
10965 }
10966
10967 Diag(Id.getLoc(), diag::err_undeclared_var_use) << Id.getName();
10968 return;
10969 }
10970
10971 NamedDecl *ND = Lookup.getAsSingle<NamedDecl>();
10972 if (isa<VarDecl>(ND) || isa<FunctionDecl>(ND)) {
10973 if (!SameDirectiveDecls.insert(cast<NamedDecl>(ND->getCanonicalDecl())))
10974 Diag(Id.getLoc(), diag::err_omp_declare_target_multiple) << Id.getName();
10975
10976 if (!ND->hasAttr<OMPDeclareTargetDeclAttr>()) {
10977 Attr *A = OMPDeclareTargetDeclAttr::CreateImplicit(Context, MT);
10978 ND->addAttr(A);
10979 if (ASTMutationListener *ML = Context.getASTMutationListener())
10980 ML->DeclarationMarkedOpenMPDeclareTarget(ND, A);
10981 checkDeclIsAllowedInOpenMPTarget(nullptr, ND);
10982 } else if (ND->getAttr<OMPDeclareTargetDeclAttr>()->getMapType() != MT) {
10983 Diag(Id.getLoc(), diag::err_omp_declare_target_to_and_link)
10984 << Id.getName();
10985 }
10986 } else
10987 Diag(Id.getLoc(), diag::err_omp_invalid_target_decl) << Id.getName();
10988}
10989
10990static void checkDeclInTargetContext(SourceLocation SL, SourceRange SR,
10991 Sema &SemaRef, Decl *D) {
10992 if (!D)
10993 return;
10994 Decl *LD = nullptr;
10995 if (isa<TagDecl>(D)) {
10996 LD = cast<TagDecl>(D)->getDefinition();
10997 } else if (isa<VarDecl>(D)) {
10998 LD = cast<VarDecl>(D)->getDefinition();
10999
11000 // If this is an implicit variable that is legal and we do not need to do
11001 // anything.
11002 if (cast<VarDecl>(D)->isImplicit()) {
11003 Attr *A = OMPDeclareTargetDeclAttr::CreateImplicit(
11004 SemaRef.Context, OMPDeclareTargetDeclAttr::MT_To);
11005 D->addAttr(A);
11006 if (ASTMutationListener *ML = SemaRef.Context.getASTMutationListener())
11007 ML->DeclarationMarkedOpenMPDeclareTarget(D, A);
11008 return;
11009 }
11010
11011 } else if (isa<FunctionDecl>(D)) {
11012 const FunctionDecl *FD = nullptr;
11013 if (cast<FunctionDecl>(D)->hasBody(FD))
11014 LD = const_cast<FunctionDecl *>(FD);
11015
11016 // If the definition is associated with the current declaration in the
11017 // target region (it can be e.g. a lambda) that is legal and we do not need
11018 // to do anything else.
11019 if (LD == D) {
11020 Attr *A = OMPDeclareTargetDeclAttr::CreateImplicit(
11021 SemaRef.Context, OMPDeclareTargetDeclAttr::MT_To);
11022 D->addAttr(A);
11023 if (ASTMutationListener *ML = SemaRef.Context.getASTMutationListener())
11024 ML->DeclarationMarkedOpenMPDeclareTarget(D, A);
11025 return;
11026 }
11027 }
11028 if (!LD)
11029 LD = D;
11030 if (LD && !LD->hasAttr<OMPDeclareTargetDeclAttr>() &&
11031 (isa<VarDecl>(LD) || isa<FunctionDecl>(LD))) {
11032 // Outlined declaration is not declared target.
11033 if (LD->isOutOfLine()) {
11034 SemaRef.Diag(LD->getLocation(), diag::warn_omp_not_in_target_context);
11035 SemaRef.Diag(SL, diag::note_used_here) << SR;
11036 } else {
11037 DeclContext *DC = LD->getDeclContext();
11038 while (DC) {
11039 if (isa<FunctionDecl>(DC) &&
11040 cast<FunctionDecl>(DC)->hasAttr<OMPDeclareTargetDeclAttr>())
11041 break;
11042 DC = DC->getParent();
11043 }
11044 if (DC)
11045 return;
11046
11047 // Is not declared in target context.
11048 SemaRef.Diag(LD->getLocation(), diag::warn_omp_not_in_target_context);
11049 SemaRef.Diag(SL, diag::note_used_here) << SR;
11050 }
11051 // Mark decl as declared target to prevent further diagnostic.
11052 Attr *A = OMPDeclareTargetDeclAttr::CreateImplicit(
11053 SemaRef.Context, OMPDeclareTargetDeclAttr::MT_To);
11054 D->addAttr(A);
11055 if (ASTMutationListener *ML = SemaRef.Context.getASTMutationListener())
11056 ML->DeclarationMarkedOpenMPDeclareTarget(D, A);
11057 }
11058}
11059
11060static bool checkValueDeclInTarget(SourceLocation SL, SourceRange SR,
11061 Sema &SemaRef, DSAStackTy *Stack,
11062 ValueDecl *VD) {
11063 if (VD->hasAttr<OMPDeclareTargetDeclAttr>())
11064 return true;
11065 if (!CheckTypeMappable(SL, SR, SemaRef, Stack, VD->getType()))
11066 return false;
11067 return true;
11068}
11069
11070void Sema::checkDeclIsAllowedInOpenMPTarget(Expr *E, Decl *D) {
11071 if (!D || D->isInvalidDecl())
11072 return;
11073 SourceRange SR = E ? E->getSourceRange() : D->getSourceRange();
11074 SourceLocation SL = E ? E->getLocStart() : D->getLocation();
11075 // 2.10.6: threadprivate variable cannot appear in a declare target directive.
11076 if (VarDecl *VD = dyn_cast<VarDecl>(D)) {
11077 if (DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->isThreadPrivate(VD)) {
11078 Diag(SL, diag::err_omp_threadprivate_in_target);
11079 ReportOriginalDSA(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), VD, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
)->getTopDSA(VD, false));
11080 return;
11081 }
11082 }
11083 if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) {
11084 // Problem if any with var declared with incomplete type will be reported
11085 // as normal, so no need to check it here.
11086 if ((E || !VD->getType()->isIncompleteType()) &&
11087 !checkValueDeclInTarget(SL, SR, *this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), VD)) {
11088 // Mark decl as declared target to prevent further diagnostic.
11089 if (isa<VarDecl>(VD) || isa<FunctionDecl>(VD)) {
11090 Attr *A = OMPDeclareTargetDeclAttr::CreateImplicit(
11091 Context, OMPDeclareTargetDeclAttr::MT_To);
11092 VD->addAttr(A);
11093 if (ASTMutationListener *ML = Context.getASTMutationListener())
11094 ML->DeclarationMarkedOpenMPDeclareTarget(VD, A);
11095 }
11096 return;
11097 }
11098 }
11099 if (!E) {
11100 // Checking declaration inside declare target region.
11101 if (!D->hasAttr<OMPDeclareTargetDeclAttr>() &&
11102 (isa<VarDecl>(D) || isa<FunctionDecl>(D))) {
11103 Attr *A = OMPDeclareTargetDeclAttr::CreateImplicit(
11104 Context, OMPDeclareTargetDeclAttr::MT_To);
11105 D->addAttr(A);
11106 if (ASTMutationListener *ML = Context.getASTMutationListener())
11107 ML->DeclarationMarkedOpenMPDeclareTarget(D, A);
11108 }
11109 return;
11110 }
11111 checkDeclInTargetContext(E->getExprLoc(), E->getSourceRange(), *this, D);
11112}
11113
11114OMPClause *Sema::ActOnOpenMPToClause(ArrayRef<Expr *> VarList,
11115 SourceLocation StartLoc,
11116 SourceLocation LParenLoc,
11117 SourceLocation EndLoc) {
11118 MappableVarListInfo MVLI(VarList);
11119 checkMappableExpressionList(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), OMPC_to, MVLI, StartLoc);
11120 if (MVLI.ProcessedVarList.empty())
11121 return nullptr;
11122
11123 return OMPToClause::Create(Context, StartLoc, LParenLoc, EndLoc,
11124 MVLI.ProcessedVarList, MVLI.VarBaseDeclarations,
11125 MVLI.VarComponents);
11126}
11127
11128OMPClause *Sema::ActOnOpenMPFromClause(ArrayRef<Expr *> VarList,
11129 SourceLocation StartLoc,
11130 SourceLocation LParenLoc,
11131 SourceLocation EndLoc) {
11132 MappableVarListInfo MVLI(VarList);
11133 checkMappableExpressionList(*this, DSAStackstatic_cast<DSAStackTy *>(VarDataSharingAttributesStack
), OMPC_from, MVLI, StartLoc);
11134 if (MVLI.ProcessedVarList.empty())
11135 return nullptr;
11136
11137 return OMPFromClause::Create(Context, StartLoc, LParenLoc, EndLoc,
11138 MVLI.ProcessedVarList, MVLI.VarBaseDeclarations,
11139 MVLI.VarComponents);
11140}