| //===--- SemaOpenMP.cpp - Semantic Analysis for OpenMP constructs ---------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// \file |
| /// \brief This file implements semantic analysis for OpenMP directives and |
| /// clauses. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/DeclOpenMP.h" |
| #include "clang/AST/StmtCXX.h" |
| #include "clang/AST/StmtOpenMP.h" |
| #include "clang/AST/StmtVisitor.h" |
| #include "clang/Basic/OpenMPKinds.h" |
| #include "clang/Lex/Preprocessor.h" |
| #include "clang/Sema/Initialization.h" |
| #include "clang/Sema/Lookup.h" |
| #include "clang/Sema/Scope.h" |
| #include "clang/Sema/ScopeInfo.h" |
| #include "clang/Sema/SemaInternal.h" |
| using namespace clang; |
| |
| //===----------------------------------------------------------------------===// |
| // Stack of data-sharing attributes for variables |
| //===----------------------------------------------------------------------===// |
| |
| namespace { |
| /// \brief Default data sharing attributes, which can be applied to directive. |
| enum DefaultDataSharingAttributes { |
| DSA_unspecified = 0, /// \brief Data sharing attribute not specified. |
| DSA_none = 1 << 0, /// \brief Default data sharing attribute 'none'. |
| DSA_shared = 1 << 1 /// \brief Default data sharing attribute 'shared'. |
| }; |
| |
| template <class T> struct MatchesAny { |
| explicit MatchesAny(ArrayRef<T> Arr) : Arr(std::move(Arr)) {} |
| bool operator()(T Kind) { |
| for (auto KindEl : Arr) |
| if (KindEl == Kind) |
| return true; |
| return false; |
| } |
| |
| private: |
| ArrayRef<T> Arr; |
| }; |
| struct MatchesAlways { |
| MatchesAlways() {} |
| template <class T> bool operator()(T) { return true; } |
| }; |
| |
| typedef MatchesAny<OpenMPClauseKind> MatchesAnyClause; |
| typedef MatchesAny<OpenMPDirectiveKind> MatchesAnyDirective; |
| |
| /// \brief Stack for tracking declarations used in OpenMP directives and |
| /// clauses and their data-sharing attributes. |
| class DSAStackTy { |
| public: |
| struct DSAVarData { |
| OpenMPDirectiveKind DKind; |
| OpenMPClauseKind CKind; |
| DeclRefExpr *RefExpr; |
| SourceLocation ImplicitDSALoc; |
| DSAVarData() |
| : DKind(OMPD_unknown), CKind(OMPC_unknown), RefExpr(nullptr), |
| ImplicitDSALoc() {} |
| }; |
| |
| private: |
| struct DSAInfo { |
| OpenMPClauseKind Attributes; |
| DeclRefExpr *RefExpr; |
| }; |
| typedef llvm::SmallDenseMap<VarDecl *, DSAInfo, 64> DeclSAMapTy; |
| typedef llvm::SmallDenseMap<VarDecl *, DeclRefExpr *, 64> AlignedMapTy; |
| |
| struct SharingMapTy { |
| DeclSAMapTy SharingMap; |
| AlignedMapTy AlignedMap; |
| DefaultDataSharingAttributes DefaultAttr; |
| SourceLocation DefaultAttrLoc; |
| OpenMPDirectiveKind Directive; |
| DeclarationNameInfo DirectiveName; |
| Scope *CurScope; |
| SourceLocation ConstructLoc; |
| SharingMapTy(OpenMPDirectiveKind DKind, DeclarationNameInfo Name, |
| Scope *CurScope, SourceLocation Loc) |
| : SharingMap(), AlignedMap(), DefaultAttr(DSA_unspecified), |
| Directive(DKind), DirectiveName(std::move(Name)), CurScope(CurScope), |
| ConstructLoc(Loc) {} |
| SharingMapTy() |
| : SharingMap(), AlignedMap(), DefaultAttr(DSA_unspecified), |
| Directive(OMPD_unknown), DirectiveName(), CurScope(nullptr), |
| ConstructLoc() {} |
| }; |
| |
| typedef SmallVector<SharingMapTy, 64> StackTy; |
| |
| /// \brief Stack of used declaration and their data-sharing attributes. |
| StackTy Stack; |
| Sema &SemaRef; |
| |
| typedef SmallVector<SharingMapTy, 8>::reverse_iterator reverse_iterator; |
| |
| DSAVarData getDSA(StackTy::reverse_iterator Iter, VarDecl *D); |
| |
| /// \brief Checks if the variable is a local for OpenMP region. |
| bool isOpenMPLocal(VarDecl *D, StackTy::reverse_iterator Iter); |
| |
| public: |
| explicit DSAStackTy(Sema &S) : Stack(1), SemaRef(S) {} |
| |
| void push(OpenMPDirectiveKind DKind, const DeclarationNameInfo &DirName, |
| Scope *CurScope, SourceLocation Loc) { |
| Stack.push_back(SharingMapTy(DKind, DirName, CurScope, Loc)); |
| Stack.back().DefaultAttrLoc = Loc; |
| } |
| |
| void pop() { |
| assert(Stack.size() > 1 && "Data-sharing attributes stack is empty!"); |
| Stack.pop_back(); |
| } |
| |
| /// \brief If 'aligned' declaration for given variable \a D was not seen yet, |
| /// add it and return NULL; otherwise return previous occurrence's expression |
| /// for diagnostics. |
| DeclRefExpr *addUniqueAligned(VarDecl *D, DeclRefExpr *NewDE); |
| |
| /// \brief Adds explicit data sharing attribute to the specified declaration. |
| void addDSA(VarDecl *D, DeclRefExpr *E, OpenMPClauseKind A); |
| |
| /// \brief Returns data sharing attributes from top of the stack for the |
| /// specified declaration. |
| DSAVarData getTopDSA(VarDecl *D, bool FromParent); |
| /// \brief Returns data-sharing attributes for the specified declaration. |
| DSAVarData getImplicitDSA(VarDecl *D, bool FromParent); |
| /// \brief Checks if the specified variables has data-sharing attributes which |
| /// match specified \a CPred predicate in any directive which matches \a DPred |
| /// predicate. |
| template <class ClausesPredicate, class DirectivesPredicate> |
| DSAVarData hasDSA(VarDecl *D, ClausesPredicate CPred, |
| DirectivesPredicate DPred, bool FromParent); |
| /// \brief Checks if the specified variables has data-sharing attributes which |
| /// match specified \a CPred predicate in any innermost directive which |
| /// matches \a DPred predicate. |
| template <class ClausesPredicate, class DirectivesPredicate> |
| DSAVarData hasInnermostDSA(VarDecl *D, ClausesPredicate CPred, |
| DirectivesPredicate DPred, |
| bool FromParent); |
| /// \brief Finds a directive which matches specified \a DPred predicate. |
| template <class NamedDirectivesPredicate> |
| bool hasDirective(NamedDirectivesPredicate DPred, bool FromParent); |
| |
| /// \brief Returns currently analyzed directive. |
| OpenMPDirectiveKind getCurrentDirective() const { |
| return Stack.back().Directive; |
| } |
| /// \brief Returns parent directive. |
| OpenMPDirectiveKind getParentDirective() const { |
| if (Stack.size() > 2) |
| return Stack[Stack.size() - 2].Directive; |
| return OMPD_unknown; |
| } |
| |
| /// \brief Set default data sharing attribute to none. |
| void setDefaultDSANone(SourceLocation Loc) { |
| Stack.back().DefaultAttr = DSA_none; |
| Stack.back().DefaultAttrLoc = Loc; |
| } |
| /// \brief Set default data sharing attribute to shared. |
| void setDefaultDSAShared(SourceLocation Loc) { |
| Stack.back().DefaultAttr = DSA_shared; |
| Stack.back().DefaultAttrLoc = Loc; |
| } |
| |
| DefaultDataSharingAttributes getDefaultDSA() const { |
| return Stack.back().DefaultAttr; |
| } |
| SourceLocation getDefaultDSALocation() const { |
| return Stack.back().DefaultAttrLoc; |
| } |
| |
| /// \brief Checks if the specified variable is a threadprivate. |
| bool isThreadPrivate(VarDecl *D) { |
| DSAVarData DVar = getTopDSA(D, false); |
| return isOpenMPThreadPrivate(DVar.CKind); |
| } |
| |
| Scope *getCurScope() const { return Stack.back().CurScope; } |
| Scope *getCurScope() { return Stack.back().CurScope; } |
| SourceLocation getConstructLoc() { return Stack.back().ConstructLoc; } |
| }; |
| bool isParallelOrTaskRegion(OpenMPDirectiveKind DKind) { |
| return isOpenMPParallelDirective(DKind) || DKind == OMPD_task || |
| DKind == OMPD_unknown; |
| } |
| } // namespace |
| |
| DSAStackTy::DSAVarData DSAStackTy::getDSA(StackTy::reverse_iterator Iter, |
| VarDecl *D) { |
| DSAVarData DVar; |
| if (Iter == std::prev(Stack.rend())) { |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a region but not in construct] |
| // File-scope or namespace-scope variables referenced in called routines |
| // in the region are shared unless they appear in a threadprivate |
| // directive. |
| if (!D->isFunctionOrMethodVarDecl()) |
| DVar.CKind = OMPC_shared; |
| |
| // OpenMP [2.9.1.2, Data-sharing Attribute Rules for Variables Referenced |
| // in a region but not in construct] |
| // Variables with static storage duration that are declared in called |
| // routines in the region are shared. |
| if (D->hasGlobalStorage()) |
| DVar.CKind = OMPC_shared; |
| |
| return DVar; |
| } |
| |
| DVar.DKind = Iter->Directive; |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, predetermined, p.1] |
| // Variables with automatic storage duration that are declared in a scope |
| // inside the construct are private. |
| if (isOpenMPLocal(D, Iter) && D->isLocalVarDecl() && |
| (D->getStorageClass() == SC_Auto || D->getStorageClass() == SC_None)) { |
| DVar.CKind = OMPC_private; |
| return DVar; |
| } |
| |
| // Explicitly specified attributes and local variables with predetermined |
| // attributes. |
| if (Iter->SharingMap.count(D)) { |
| DVar.RefExpr = Iter->SharingMap[D].RefExpr; |
| DVar.CKind = Iter->SharingMap[D].Attributes; |
| DVar.ImplicitDSALoc = Iter->DefaultAttrLoc; |
| return DVar; |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, implicitly determined, p.1] |
| // In a parallel or task construct, the data-sharing attributes of these |
| // variables are determined by the default clause, if present. |
| switch (Iter->DefaultAttr) { |
| case DSA_shared: |
| DVar.CKind = OMPC_shared; |
| DVar.ImplicitDSALoc = Iter->DefaultAttrLoc; |
| return DVar; |
| case DSA_none: |
| return DVar; |
| case DSA_unspecified: |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, implicitly determined, p.2] |
| // In a parallel construct, if no default clause is present, these |
| // variables are shared. |
| DVar.ImplicitDSALoc = Iter->DefaultAttrLoc; |
| if (isOpenMPParallelDirective(DVar.DKind)) { |
| DVar.CKind = OMPC_shared; |
| return DVar; |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, implicitly determined, p.4] |
| // In a task construct, if no default clause is present, a variable that in |
| // the enclosing context is determined to be shared by all implicit tasks |
| // bound to the current team is shared. |
| if (DVar.DKind == OMPD_task) { |
| DSAVarData DVarTemp; |
| for (StackTy::reverse_iterator I = std::next(Iter), |
| EE = std::prev(Stack.rend()); |
| I != EE; ++I) { |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables |
| // Referenced |
| // in a Construct, implicitly determined, p.6] |
| // In a task construct, if no default clause is present, a variable |
| // whose data-sharing attribute is not determined by the rules above is |
| // firstprivate. |
| DVarTemp = getDSA(I, D); |
| if (DVarTemp.CKind != OMPC_shared) { |
| DVar.RefExpr = nullptr; |
| DVar.DKind = OMPD_task; |
| DVar.CKind = OMPC_firstprivate; |
| return DVar; |
| } |
| if (isParallelOrTaskRegion(I->Directive)) |
| break; |
| } |
| DVar.DKind = OMPD_task; |
| DVar.CKind = |
| (DVarTemp.CKind == OMPC_unknown) ? OMPC_firstprivate : OMPC_shared; |
| return DVar; |
| } |
| } |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, implicitly determined, p.3] |
| // For constructs other than task, if no default clause is present, these |
| // variables inherit their data-sharing attributes from the enclosing |
| // context. |
| return getDSA(std::next(Iter), D); |
| } |
| |
| DeclRefExpr *DSAStackTy::addUniqueAligned(VarDecl *D, DeclRefExpr *NewDE) { |
| assert(Stack.size() > 1 && "Data sharing attributes stack is empty"); |
| auto It = Stack.back().AlignedMap.find(D); |
| if (It == Stack.back().AlignedMap.end()) { |
| assert(NewDE && "Unexpected nullptr expr to be added into aligned map"); |
| Stack.back().AlignedMap[D] = NewDE; |
| return nullptr; |
| } else { |
| assert(It->second && "Unexpected nullptr expr in the aligned map"); |
| return It->second; |
| } |
| return nullptr; |
| } |
| |
| void DSAStackTy::addDSA(VarDecl *D, DeclRefExpr *E, OpenMPClauseKind A) { |
| if (A == OMPC_threadprivate) { |
| Stack[0].SharingMap[D].Attributes = A; |
| Stack[0].SharingMap[D].RefExpr = E; |
| } else { |
| assert(Stack.size() > 1 && "Data-sharing attributes stack is empty"); |
| Stack.back().SharingMap[D].Attributes = A; |
| Stack.back().SharingMap[D].RefExpr = E; |
| } |
| } |
| |
| bool DSAStackTy::isOpenMPLocal(VarDecl *D, StackTy::reverse_iterator Iter) { |
| if (Stack.size() > 2) { |
| reverse_iterator I = Iter, E = std::prev(Stack.rend()); |
| Scope *TopScope = nullptr; |
| while (I != E && !isParallelOrTaskRegion(I->Directive)) { |
| ++I; |
| } |
| if (I == E) |
| return false; |
| TopScope = I->CurScope ? I->CurScope->getParent() : nullptr; |
| Scope *CurScope = getCurScope(); |
| while (CurScope != TopScope && !CurScope->isDeclScope(D)) { |
| CurScope = CurScope->getParent(); |
| } |
| return CurScope != TopScope; |
| } |
| return false; |
| } |
| |
| DSAStackTy::DSAVarData DSAStackTy::getTopDSA(VarDecl *D, bool FromParent) { |
| DSAVarData DVar; |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, predetermined, p.1] |
| // Variables appearing in threadprivate directives are threadprivate. |
| if (D->getTLSKind() != VarDecl::TLS_None) { |
| DVar.CKind = OMPC_threadprivate; |
| return DVar; |
| } |
| if (Stack[0].SharingMap.count(D)) { |
| DVar.RefExpr = Stack[0].SharingMap[D].RefExpr; |
| DVar.CKind = OMPC_threadprivate; |
| return DVar; |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, predetermined, p.1] |
| // Variables with automatic storage duration that are declared in a scope |
| // inside the construct are private. |
| OpenMPDirectiveKind Kind = |
| FromParent ? getParentDirective() : getCurrentDirective(); |
| auto StartI = std::next(Stack.rbegin()); |
| auto EndI = std::prev(Stack.rend()); |
| if (FromParent && StartI != EndI) { |
| StartI = std::next(StartI); |
| } |
| if (!isParallelOrTaskRegion(Kind)) { |
| if (isOpenMPLocal(D, StartI) && D->isLocalVarDecl() && |
| (D->getStorageClass() == SC_Auto || D->getStorageClass() == SC_None)) { |
| DVar.CKind = OMPC_private; |
| return DVar; |
| } |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, predetermined, p.4] |
| // Static data members are shared. |
| if (D->isStaticDataMember()) { |
| // Variables with const-qualified type having no mutable member may be |
| // listed in a firstprivate clause, even if they are static data members. |
| DSAVarData DVarTemp = hasDSA(D, MatchesAnyClause(OMPC_firstprivate), |
| MatchesAlways(), FromParent); |
| if (DVarTemp.CKind == OMPC_firstprivate && DVarTemp.RefExpr) |
| return DVar; |
| |
| DVar.CKind = OMPC_shared; |
| return DVar; |
| } |
| |
| QualType Type = D->getType().getNonReferenceType().getCanonicalType(); |
| bool IsConstant = Type.isConstant(SemaRef.getASTContext()); |
| while (Type->isArrayType()) { |
| QualType ElemType = cast<ArrayType>(Type.getTypePtr())->getElementType(); |
| Type = ElemType.getNonReferenceType().getCanonicalType(); |
| } |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, predetermined, p.6] |
| // Variables with const qualified type having no mutable member are |
| // shared. |
| CXXRecordDecl *RD = |
| SemaRef.getLangOpts().CPlusPlus ? Type->getAsCXXRecordDecl() : nullptr; |
| if (IsConstant && |
| !(SemaRef.getLangOpts().CPlusPlus && RD && RD->hasMutableFields())) { |
| // Variables with const-qualified type having no mutable member may be |
| // listed in a firstprivate clause, even if they are static data members. |
| DSAVarData DVarTemp = hasDSA(D, MatchesAnyClause(OMPC_firstprivate), |
| MatchesAlways(), FromParent); |
| if (DVarTemp.CKind == OMPC_firstprivate && DVarTemp.RefExpr) |
| return DVar; |
| |
| DVar.CKind = OMPC_shared; |
| return DVar; |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, predetermined, p.7] |
| // Variables with static storage duration that are declared in a scope |
| // inside the construct are shared. |
| if (D->isStaticLocal()) { |
| DVar.CKind = OMPC_shared; |
| return DVar; |
| } |
| |
| // Explicitly specified attributes and local variables with predetermined |
| // attributes. |
| auto I = std::prev(StartI); |
| if (I->SharingMap.count(D)) { |
| DVar.RefExpr = I->SharingMap[D].RefExpr; |
| DVar.CKind = I->SharingMap[D].Attributes; |
| DVar.ImplicitDSALoc = I->DefaultAttrLoc; |
| } |
| |
| return DVar; |
| } |
| |
| DSAStackTy::DSAVarData DSAStackTy::getImplicitDSA(VarDecl *D, bool FromParent) { |
| auto StartI = Stack.rbegin(); |
| auto EndI = std::prev(Stack.rend()); |
| if (FromParent && StartI != EndI) { |
| StartI = std::next(StartI); |
| } |
| return getDSA(StartI, D); |
| } |
| |
| template <class ClausesPredicate, class DirectivesPredicate> |
| DSAStackTy::DSAVarData DSAStackTy::hasDSA(VarDecl *D, ClausesPredicate CPred, |
| DirectivesPredicate DPred, |
| bool FromParent) { |
| auto StartI = std::next(Stack.rbegin()); |
| auto EndI = std::prev(Stack.rend()); |
| if (FromParent && StartI != EndI) { |
| StartI = std::next(StartI); |
| } |
| for (auto I = StartI, EE = EndI; I != EE; ++I) { |
| if (!DPred(I->Directive) && !isParallelOrTaskRegion(I->Directive)) |
| continue; |
| DSAVarData DVar = getDSA(I, D); |
| if (CPred(DVar.CKind)) |
| return DVar; |
| } |
| return DSAVarData(); |
| } |
| |
| template <class ClausesPredicate, class DirectivesPredicate> |
| DSAStackTy::DSAVarData |
| DSAStackTy::hasInnermostDSA(VarDecl *D, ClausesPredicate CPred, |
| DirectivesPredicate DPred, bool FromParent) { |
| auto StartI = std::next(Stack.rbegin()); |
| auto EndI = std::prev(Stack.rend()); |
| if (FromParent && StartI != EndI) { |
| StartI = std::next(StartI); |
| } |
| for (auto I = StartI, EE = EndI; I != EE; ++I) { |
| if (!DPred(I->Directive)) |
| break; |
| DSAVarData DVar = getDSA(I, D); |
| if (CPred(DVar.CKind)) |
| return DVar; |
| return DSAVarData(); |
| } |
| return DSAVarData(); |
| } |
| |
| template <class NamedDirectivesPredicate> |
| bool DSAStackTy::hasDirective(NamedDirectivesPredicate DPred, bool FromParent) { |
| auto StartI = std::next(Stack.rbegin()); |
| auto EndI = std::prev(Stack.rend()); |
| if (FromParent && StartI != EndI) { |
| StartI = std::next(StartI); |
| } |
| for (auto I = StartI, EE = EndI; I != EE; ++I) { |
| if (DPred(I->Directive, I->DirectiveName, I->ConstructLoc)) |
| return true; |
| } |
| return false; |
| } |
| |
| void Sema::InitDataSharingAttributesStack() { |
| VarDataSharingAttributesStack = new DSAStackTy(*this); |
| } |
| |
| #define DSAStack static_cast<DSAStackTy *>(VarDataSharingAttributesStack) |
| |
| void Sema::DestroyDataSharingAttributesStack() { delete DSAStack; } |
| |
| void Sema::StartOpenMPDSABlock(OpenMPDirectiveKind DKind, |
| const DeclarationNameInfo &DirName, |
| Scope *CurScope, SourceLocation Loc) { |
| DSAStack->push(DKind, DirName, CurScope, Loc); |
| PushExpressionEvaluationContext(PotentiallyEvaluated); |
| } |
| |
| void Sema::EndOpenMPDSABlock(Stmt *CurDirective) { |
| // OpenMP [2.14.3.5, Restrictions, C/C++, p.1] |
| // A variable of class type (or array thereof) that appears in a lastprivate |
| // clause requires an accessible, unambiguous default constructor for the |
| // class type, unless the list item is also specified in a firstprivate |
| // clause. |
| if (auto D = dyn_cast_or_null<OMPExecutableDirective>(CurDirective)) { |
| for (auto C : D->clauses()) { |
| if (auto Clause = dyn_cast<OMPLastprivateClause>(C)) { |
| for (auto VarRef : Clause->varlists()) { |
| if (VarRef->isValueDependent() || VarRef->isTypeDependent()) |
| continue; |
| auto VD = cast<VarDecl>(cast<DeclRefExpr>(VarRef)->getDecl()); |
| auto DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.CKind == OMPC_lastprivate) { |
| SourceLocation ELoc = VarRef->getExprLoc(); |
| auto Type = VarRef->getType(); |
| if (Type->isArrayType()) |
| Type = QualType(Type->getArrayElementTypeNoTypeQual(), 0); |
| CXXRecordDecl *RD = |
| getLangOpts().CPlusPlus ? Type->getAsCXXRecordDecl() : nullptr; |
| // FIXME This code must be replaced by actual constructing of the |
| // lastprivate variable. |
| if (RD) { |
| CXXConstructorDecl *CD = LookupDefaultConstructor(RD); |
| PartialDiagnostic PD = |
| PartialDiagnostic(PartialDiagnostic::NullDiagnostic()); |
| if (!CD || |
| CheckConstructorAccess( |
| ELoc, CD, InitializedEntity::InitializeTemporary(Type), |
| CD->getAccess(), PD) == AR_inaccessible || |
| CD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_lastprivate) << 0; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), IsDecl ? diag::note_previous_decl |
| : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, CD); |
| DiagnoseUseOfDecl(CD, ELoc); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| DSAStack->pop(); |
| DiscardCleanupsInEvaluationContext(); |
| PopExpressionEvaluationContext(); |
| } |
| |
| namespace { |
| |
| class VarDeclFilterCCC : public CorrectionCandidateCallback { |
| private: |
| Sema &SemaRef; |
| |
| public: |
| explicit VarDeclFilterCCC(Sema &S) : SemaRef(S) {} |
| bool ValidateCandidate(const TypoCorrection &Candidate) override { |
| NamedDecl *ND = Candidate.getCorrectionDecl(); |
| if (VarDecl *VD = dyn_cast_or_null<VarDecl>(ND)) { |
| return VD->hasGlobalStorage() && |
| SemaRef.isDeclInScope(ND, SemaRef.getCurLexicalContext(), |
| SemaRef.getCurScope()); |
| } |
| return false; |
| } |
| }; |
| } // namespace |
| |
| ExprResult Sema::ActOnOpenMPIdExpression(Scope *CurScope, |
| CXXScopeSpec &ScopeSpec, |
| const DeclarationNameInfo &Id) { |
| LookupResult Lookup(*this, Id, LookupOrdinaryName); |
| LookupParsedName(Lookup, CurScope, &ScopeSpec, true); |
| |
| if (Lookup.isAmbiguous()) |
| return ExprError(); |
| |
| VarDecl *VD; |
| if (!Lookup.isSingleResult()) { |
| VarDeclFilterCCC Validator(*this); |
| if (TypoCorrection Corrected = |
| CorrectTypo(Id, LookupOrdinaryName, CurScope, nullptr, Validator, |
| CTK_ErrorRecovery)) { |
| diagnoseTypo(Corrected, |
| PDiag(Lookup.empty() |
| ? diag::err_undeclared_var_use_suggest |
| : diag::err_omp_expected_var_arg_suggest) |
| << Id.getName()); |
| VD = Corrected.getCorrectionDeclAs<VarDecl>(); |
| } else { |
| Diag(Id.getLoc(), Lookup.empty() ? diag::err_undeclared_var_use |
| : diag::err_omp_expected_var_arg) |
| << Id.getName(); |
| return ExprError(); |
| } |
| } else { |
| if (!(VD = Lookup.getAsSingle<VarDecl>())) { |
| Diag(Id.getLoc(), diag::err_omp_expected_var_arg) << Id.getName(); |
| Diag(Lookup.getFoundDecl()->getLocation(), diag::note_declared_at); |
| return ExprError(); |
| } |
| } |
| Lookup.suppressDiagnostics(); |
| |
| // OpenMP [2.9.2, Syntax, C/C++] |
| // Variables must be file-scope, namespace-scope, or static block-scope. |
| if (!VD->hasGlobalStorage()) { |
| Diag(Id.getLoc(), diag::err_omp_global_var_arg) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << !VD->isStaticLocal(); |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| return ExprError(); |
| } |
| |
| VarDecl *CanonicalVD = VD->getCanonicalDecl(); |
| NamedDecl *ND = cast<NamedDecl>(CanonicalVD); |
| // OpenMP [2.9.2, Restrictions, C/C++, p.2] |
| // A threadprivate directive for file-scope variables must appear outside |
| // any definition or declaration. |
| if (CanonicalVD->getDeclContext()->isTranslationUnit() && |
| !getCurLexicalContext()->isTranslationUnit()) { |
| Diag(Id.getLoc(), diag::err_omp_var_scope) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << VD; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| return ExprError(); |
| } |
| // OpenMP [2.9.2, Restrictions, C/C++, p.3] |
| // A threadprivate directive for static class member variables must appear |
| // in the class definition, in the same scope in which the member |
| // variables are declared. |
| if (CanonicalVD->isStaticDataMember() && |
| !CanonicalVD->getDeclContext()->Equals(getCurLexicalContext())) { |
| Diag(Id.getLoc(), diag::err_omp_var_scope) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << VD; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| return ExprError(); |
| } |
| // OpenMP [2.9.2, Restrictions, C/C++, p.4] |
| // A threadprivate directive for namespace-scope variables must appear |
| // outside any definition or declaration other than the namespace |
| // definition itself. |
| if (CanonicalVD->getDeclContext()->isNamespace() && |
| (!getCurLexicalContext()->isFileContext() || |
| !getCurLexicalContext()->Encloses(CanonicalVD->getDeclContext()))) { |
| Diag(Id.getLoc(), diag::err_omp_var_scope) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << VD; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| return ExprError(); |
| } |
| // OpenMP [2.9.2, Restrictions, C/C++, p.6] |
| // A threadprivate directive for static block-scope variables must appear |
| // in the scope of the variable and not in a nested scope. |
| if (CanonicalVD->isStaticLocal() && CurScope && |
| !isDeclInScope(ND, getCurLexicalContext(), CurScope)) { |
| Diag(Id.getLoc(), diag::err_omp_var_scope) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << VD; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| return ExprError(); |
| } |
| |
| // OpenMP [2.9.2, Restrictions, C/C++, p.2-6] |
| // A threadprivate directive must lexically precede all references to any |
| // of the variables in its list. |
| if (VD->isUsed()) { |
| Diag(Id.getLoc(), diag::err_omp_var_used) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << VD; |
| return ExprError(); |
| } |
| |
| QualType ExprType = VD->getType().getNonReferenceType(); |
| ExprResult DE = BuildDeclRefExpr(VD, ExprType, VK_LValue, Id.getLoc()); |
| return DE; |
| } |
| |
| Sema::DeclGroupPtrTy |
| Sema::ActOnOpenMPThreadprivateDirective(SourceLocation Loc, |
| ArrayRef<Expr *> VarList) { |
| if (OMPThreadPrivateDecl *D = CheckOMPThreadPrivateDecl(Loc, VarList)) { |
| CurContext->addDecl(D); |
| return DeclGroupPtrTy::make(DeclGroupRef(D)); |
| } |
| return DeclGroupPtrTy(); |
| } |
| |
| namespace { |
| class LocalVarRefChecker : public ConstStmtVisitor<LocalVarRefChecker, bool> { |
| Sema &SemaRef; |
| |
| public: |
| bool VisitDeclRefExpr(const DeclRefExpr *E) { |
| if (auto VD = dyn_cast<VarDecl>(E->getDecl())) { |
| if (VD->hasLocalStorage()) { |
| SemaRef.Diag(E->getLocStart(), |
| diag::err_omp_local_var_in_threadprivate_init) |
| << E->getSourceRange(); |
| SemaRef.Diag(VD->getLocation(), diag::note_defined_here) |
| << VD << VD->getSourceRange(); |
| return true; |
| } |
| } |
| return false; |
| } |
| bool VisitStmt(const Stmt *S) { |
| for (auto Child : S->children()) { |
| if (Child && Visit(Child)) |
| return true; |
| } |
| return false; |
| } |
| explicit LocalVarRefChecker(Sema &SemaRef) : SemaRef(SemaRef) {} |
| }; |
| } // namespace |
| |
| OMPThreadPrivateDecl * |
| Sema::CheckOMPThreadPrivateDecl(SourceLocation Loc, ArrayRef<Expr *> VarList) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| DeclRefExpr *DE = cast<DeclRefExpr>(RefExpr); |
| VarDecl *VD = cast<VarDecl>(DE->getDecl()); |
| SourceLocation ILoc = DE->getExprLoc(); |
| |
| // OpenMP [2.9.2, Restrictions, C/C++, p.10] |
| // A threadprivate variable must not have an incomplete type. |
| if (RequireCompleteType(ILoc, VD->getType(), |
| diag::err_omp_threadprivate_incomplete_type)) { |
| continue; |
| } |
| |
| // OpenMP [2.9.2, Restrictions, C/C++, p.10] |
| // A threadprivate variable must not have a reference type. |
| if (VD->getType()->isReferenceType()) { |
| Diag(ILoc, diag::err_omp_ref_type_arg) |
| << getOpenMPDirectiveName(OMPD_threadprivate) << VD->getType(); |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // Check if this is a TLS variable. |
| if (VD->getTLSKind()) { |
| Diag(ILoc, diag::err_omp_var_thread_local) << VD; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // Check if initial value of threadprivate variable reference variable with |
| // local storage (it is not supported by runtime). |
| if (auto Init = VD->getAnyInitializer()) { |
| LocalVarRefChecker Checker(*this); |
| if (Checker.Visit(Init)) |
| continue; |
| } |
| |
| Vars.push_back(RefExpr); |
| DSAStack->addDSA(VD, DE, OMPC_threadprivate); |
| } |
| OMPThreadPrivateDecl *D = nullptr; |
| if (!Vars.empty()) { |
| D = OMPThreadPrivateDecl::Create(Context, getCurLexicalContext(), Loc, |
| Vars); |
| D->setAccess(AS_public); |
| } |
| return D; |
| } |
| |
| static void ReportOriginalDSA(Sema &SemaRef, DSAStackTy *Stack, |
| const VarDecl *VD, DSAStackTy::DSAVarData DVar, |
| bool IsLoopIterVar = false) { |
| if (DVar.RefExpr) { |
| SemaRef.Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| return; |
| } |
| enum { |
| PDSA_StaticMemberShared, |
| PDSA_StaticLocalVarShared, |
| PDSA_LoopIterVarPrivate, |
| PDSA_LoopIterVarLinear, |
| PDSA_LoopIterVarLastprivate, |
| PDSA_ConstVarShared, |
| PDSA_GlobalVarShared, |
| PDSA_TaskVarFirstprivate, |
| PDSA_LocalVarPrivate, |
| PDSA_Implicit |
| } Reason = PDSA_Implicit; |
| bool ReportHint = false; |
| auto ReportLoc = VD->getLocation(); |
| if (IsLoopIterVar) { |
| if (DVar.CKind == OMPC_private) |
| Reason = PDSA_LoopIterVarPrivate; |
| else if (DVar.CKind == OMPC_lastprivate) |
| Reason = PDSA_LoopIterVarLastprivate; |
| else |
| Reason = PDSA_LoopIterVarLinear; |
| } else if (DVar.DKind == OMPD_task && DVar.CKind == OMPC_firstprivate) { |
| Reason = PDSA_TaskVarFirstprivate; |
| ReportLoc = DVar.ImplicitDSALoc; |
| } else if (VD->isStaticLocal()) |
| Reason = PDSA_StaticLocalVarShared; |
| else if (VD->isStaticDataMember()) |
| Reason = PDSA_StaticMemberShared; |
| else if (VD->isFileVarDecl()) |
| Reason = PDSA_GlobalVarShared; |
| else if (VD->getType().isConstant(SemaRef.getASTContext())) |
| Reason = PDSA_ConstVarShared; |
| else if (VD->isLocalVarDecl() && DVar.CKind == OMPC_private) { |
| ReportHint = true; |
| Reason = PDSA_LocalVarPrivate; |
| } |
| if (Reason != PDSA_Implicit) { |
| SemaRef.Diag(ReportLoc, diag::note_omp_predetermined_dsa) |
| << Reason << ReportHint |
| << getOpenMPDirectiveName(Stack->getCurrentDirective()); |
| } else if (DVar.ImplicitDSALoc.isValid()) { |
| SemaRef.Diag(DVar.ImplicitDSALoc, diag::note_omp_implicit_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| } |
| } |
| |
| namespace { |
| class DSAAttrChecker : public StmtVisitor<DSAAttrChecker, void> { |
| DSAStackTy *Stack; |
| Sema &SemaRef; |
| bool ErrorFound; |
| CapturedStmt *CS; |
| llvm::SmallVector<Expr *, 8> ImplicitFirstprivate; |
| llvm::DenseMap<VarDecl *, Expr *> VarsWithInheritedDSA; |
| |
| public: |
| void VisitDeclRefExpr(DeclRefExpr *E) { |
| if (auto *VD = dyn_cast<VarDecl>(E->getDecl())) { |
| // Skip internally declared variables. |
| if (VD->isLocalVarDecl() && !CS->capturesVariable(VD)) |
| return; |
| |
| auto DVar = Stack->getTopDSA(VD, false); |
| // Check if the variable has explicit DSA set and stop analysis if it so. |
| if (DVar.RefExpr) return; |
| |
| auto ELoc = E->getExprLoc(); |
| auto DKind = Stack->getCurrentDirective(); |
| // The default(none) clause requires that each variable that is referenced |
| // in the construct, and does not have a predetermined data-sharing |
| // attribute, must have its data-sharing attribute explicitly determined |
| // by being listed in a data-sharing attribute clause. |
| if (DVar.CKind == OMPC_unknown && Stack->getDefaultDSA() == DSA_none && |
| isParallelOrTaskRegion(DKind) && |
| VarsWithInheritedDSA.count(VD) == 0) { |
| VarsWithInheritedDSA[VD] = E; |
| return; |
| } |
| |
| // OpenMP [2.9.3.6, Restrictions, p.2] |
| // A list item that appears in a reduction clause of the innermost |
| // enclosing worksharing or parallel construct may not be accessed in an |
| // explicit task. |
| DVar = Stack->hasInnermostDSA(VD, MatchesAnyClause(OMPC_reduction), |
| [](OpenMPDirectiveKind K) -> bool { |
| return isOpenMPParallelDirective(K) || |
| isOpenMPWorksharingDirective(K); |
| }, |
| false); |
| if (DKind == OMPD_task && DVar.CKind == OMPC_reduction) { |
| ErrorFound = true; |
| SemaRef.Diag(ELoc, diag::err_omp_reduction_in_task); |
| ReportOriginalDSA(SemaRef, Stack, VD, DVar); |
| return; |
| } |
| |
| // Define implicit data-sharing attributes for task. |
| DVar = Stack->getImplicitDSA(VD, false); |
| if (DKind == OMPD_task && DVar.CKind != OMPC_shared) |
| ImplicitFirstprivate.push_back(E); |
| } |
| } |
| void VisitOMPExecutableDirective(OMPExecutableDirective *S) { |
| for (auto *C : S->clauses()) { |
| // Skip analysis of arguments of implicitly defined firstprivate clause |
| // for task directives. |
| if (C && (!isa<OMPFirstprivateClause>(C) || C->getLocStart().isValid())) |
| for (auto *CC : C->children()) { |
| if (CC) |
| Visit(CC); |
| } |
| } |
| } |
| void VisitStmt(Stmt *S) { |
| for (auto *C : S->children()) { |
| if (C && !isa<OMPExecutableDirective>(C)) |
| Visit(C); |
| } |
| } |
| |
| bool isErrorFound() { return ErrorFound; } |
| ArrayRef<Expr *> getImplicitFirstprivate() { return ImplicitFirstprivate; } |
| llvm::DenseMap<VarDecl *, Expr *> &getVarsWithInheritedDSA() { |
| return VarsWithInheritedDSA; |
| } |
| |
| DSAAttrChecker(DSAStackTy *S, Sema &SemaRef, CapturedStmt *CS) |
| : Stack(S), SemaRef(SemaRef), ErrorFound(false), CS(CS) {} |
| }; |
| } // namespace |
| |
| void Sema::ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope) { |
| switch (DKind) { |
| case OMPD_parallel: { |
| QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1); |
| QualType KmpInt32PtrTy = Context.getPointerType(KmpInt32Ty); |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(".global_tid.", KmpInt32PtrTy), |
| std::make_pair(".bound_tid.", KmpInt32PtrTy), |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_simd: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_for: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_sections: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_section: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_single: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_master: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_critical: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_parallel_for: { |
| QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1); |
| QualType KmpInt32PtrTy = Context.getPointerType(KmpInt32Ty); |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(".global_tid.", KmpInt32PtrTy), |
| std::make_pair(".bound_tid.", KmpInt32PtrTy), |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_parallel_sections: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_task: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_taskyield: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_barrier: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_taskwait: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_flush: { |
| Sema::CapturedParamNameType Params[] = { |
| std::make_pair(StringRef(), QualType()) // __context with shared vars |
| }; |
| ActOnCapturedRegionStart(DSAStack->getConstructLoc(), CurScope, CR_OpenMP, |
| Params); |
| break; |
| } |
| case OMPD_threadprivate: |
| llvm_unreachable("OpenMP Directive is not allowed"); |
| case OMPD_unknown: |
| llvm_unreachable("Unknown OpenMP directive"); |
| } |
| } |
| |
| static bool CheckNestingOfRegions(Sema &SemaRef, DSAStackTy *Stack, |
| OpenMPDirectiveKind CurrentRegion, |
| const DeclarationNameInfo &CurrentName, |
| SourceLocation StartLoc) { |
| // Allowed nesting of constructs |
| // +------------------+-----------------+------------------------------------+ |
| // | Parent directive | Child directive | Closely (!), No-Closely(+), Both(*)| |
| // +------------------+-----------------+------------------------------------+ |
| // | parallel | parallel | * | |
| // | parallel | for | * | |
| // | parallel | master | * | |
| // | parallel | critical | * | |
| // | parallel | simd | * | |
| // | parallel | sections | * | |
| // | parallel | section | + | |
| // | parallel | single | * | |
| // | parallel | parallel for | * | |
| // | parallel |parallel sections| * | |
| // | parallel | task | * | |
| // | parallel | taskyield | * | |
| // | parallel | barrier | * | |
| // | parallel | taskwait | * | |
| // | parallel | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | for | parallel | * | |
| // | for | for | + | |
| // | for | master | + | |
| // | for | critical | * | |
| // | for | simd | * | |
| // | for | sections | + | |
| // | for | section | + | |
| // | for | single | + | |
| // | for | parallel for | * | |
| // | for |parallel sections| * | |
| // | for | task | * | |
| // | for | taskyield | * | |
| // | for | barrier | + | |
| // | for | taskwait | * | |
| // | for | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | master | parallel | * | |
| // | master | for | + | |
| // | master | master | * | |
| // | master | critical | * | |
| // | master | simd | * | |
| // | master | sections | + | |
| // | master | section | + | |
| // | master | single | + | |
| // | master | parallel for | * | |
| // | master |parallel sections| * | |
| // | master | task | * | |
| // | master | taskyield | * | |
| // | master | barrier | + | |
| // | master | taskwait | * | |
| // | master | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | critical | parallel | * | |
| // | critical | for | + | |
| // | critical | master | * | |
| // | critical | critical | * (should have dirrerent names) | |
| // | critical | simd | * | |
| // | critical | sections | + | |
| // | critical | section | + | |
| // | critical | single | + | |
| // | critical | parallel for | * | |
| // | critical |parallel sections| * | |
| // | critical | task | * | |
| // | critical | taskyield | * | |
| // | critical | barrier | + | |
| // | critical | taskwait | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | simd | parallel | | |
| // | simd | for | | |
| // | simd | master | | |
| // | simd | critical | | |
| // | simd | simd | | |
| // | simd | sections | | |
| // | simd | section | | |
| // | simd | single | | |
| // | simd | parallel for | | |
| // | simd |parallel sections| | |
| // | simd | task | | |
| // | simd | taskyield | | |
| // | simd | barrier | | |
| // | simd | taskwait | | |
| // | simd | flush | | |
| // +------------------+-----------------+------------------------------------+ |
| // | sections | parallel | * | |
| // | sections | for | + | |
| // | sections | master | + | |
| // | sections | critical | * | |
| // | sections | simd | * | |
| // | sections | sections | + | |
| // | sections | section | * | |
| // | sections | single | + | |
| // | sections | parallel for | * | |
| // | sections |parallel sections| * | |
| // | sections | task | * | |
| // | sections | taskyield | * | |
| // | sections | barrier | + | |
| // | sections | taskwait | * | |
| // | sections | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | section | parallel | * | |
| // | section | for | + | |
| // | section | master | + | |
| // | section | critical | * | |
| // | section | simd | * | |
| // | section | sections | + | |
| // | section | section | + | |
| // | section | single | + | |
| // | section | parallel for | * | |
| // | section |parallel sections| * | |
| // | section | task | * | |
| // | section | taskyield | * | |
| // | section | barrier | + | |
| // | section | taskwait | * | |
| // | section | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | single | parallel | * | |
| // | single | for | + | |
| // | single | master | + | |
| // | single | critical | * | |
| // | single | simd | * | |
| // | single | sections | + | |
| // | single | section | + | |
| // | single | single | + | |
| // | single | parallel for | * | |
| // | single |parallel sections| * | |
| // | single | task | * | |
| // | single | taskyield | * | |
| // | single | barrier | + | |
| // | single | taskwait | * | |
| // | single | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | parallel for | parallel | * | |
| // | parallel for | for | + | |
| // | parallel for | master | + | |
| // | parallel for | critical | * | |
| // | parallel for | simd | * | |
| // | parallel for | sections | + | |
| // | parallel for | section | + | |
| // | parallel for | single | + | |
| // | parallel for | parallel for | * | |
| // | parallel for |parallel sections| * | |
| // | parallel for | task | * | |
| // | parallel for | taskyield | * | |
| // | parallel for | barrier | + | |
| // | parallel for | taskwait | * | |
| // | parallel for | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | parallel sections| parallel | * | |
| // | parallel sections| for | + | |
| // | parallel sections| master | + | |
| // | parallel sections| critical | + | |
| // | parallel sections| simd | * | |
| // | parallel sections| sections | + | |
| // | parallel sections| section | * | |
| // | parallel sections| single | + | |
| // | parallel sections| parallel for | * | |
| // | parallel sections|parallel sections| * | |
| // | parallel sections| task | * | |
| // | parallel sections| taskyield | * | |
| // | parallel sections| barrier | + | |
| // | parallel sections| taskwait | * | |
| // | parallel sections| flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| // | task | parallel | * | |
| // | task | for | + | |
| // | task | master | + | |
| // | task | critical | * | |
| // | task | simd | * | |
| // | task | sections | + | |
| // | task | section | + | |
| // | task | single | + | |
| // | task | parallel for | * | |
| // | task |parallel sections| * | |
| // | task | task | * | |
| // | task | taskyield | * | |
| // | task | barrier | + | |
| // | task | taskwait | * | |
| // | task | flush | * | |
| // +------------------+-----------------+------------------------------------+ |
| if (Stack->getCurScope()) { |
| auto ParentRegion = Stack->getParentDirective(); |
| bool NestingProhibited = false; |
| bool CloseNesting = true; |
| bool ShouldBeInParallelRegion = false; |
| if (isOpenMPSimdDirective(ParentRegion)) { |
| // OpenMP [2.16, Nesting of Regions] |
| // OpenMP constructs may not be nested inside a simd region. |
| SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region_simd); |
| return true; |
| } |
| if (CurrentRegion == OMPD_section) { |
| // OpenMP [2.7.2, sections Construct, Restrictions] |
| // Orphaned section directives are prohibited. That is, the section |
| // directives must appear within the sections construct and must not be |
| // encountered elsewhere in the sections region. |
| if (ParentRegion != OMPD_sections && |
| ParentRegion != OMPD_parallel_sections) { |
| SemaRef.Diag(StartLoc, diag::err_omp_orphaned_section_directive) |
| << (ParentRegion != OMPD_unknown) |
| << getOpenMPDirectiveName(ParentRegion); |
| return true; |
| } |
| return false; |
| } |
| if (CurrentRegion == OMPD_master) { |
| // OpenMP [2.16, Nesting of Regions] |
| // A master region may not be closely nested inside a worksharing, |
| // atomic (TODO), or explicit task region. |
| NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) || |
| ParentRegion == OMPD_task; |
| } else if (CurrentRegion == OMPD_critical && CurrentName.getName()) { |
| // OpenMP [2.16, Nesting of Regions] |
| // A critical region may not be nested (closely or otherwise) inside a |
| // critical region with the same name. Note that this restriction is not |
| // sufficient to prevent deadlock. |
| SourceLocation PreviousCriticalLoc; |
| bool DeadLock = |
| Stack->hasDirective([CurrentName, &PreviousCriticalLoc]( |
| OpenMPDirectiveKind K, |
| const DeclarationNameInfo &DNI, |
| SourceLocation Loc) |
| ->bool { |
| if (K == OMPD_critical && |
| DNI.getName() == CurrentName.getName()) { |
| PreviousCriticalLoc = Loc; |
| return true; |
| } else |
| return false; |
| }, |
| false /* skip top directive */); |
| if (DeadLock) { |
| SemaRef.Diag(StartLoc, |
| diag::err_omp_prohibited_region_critical_same_name) |
| << CurrentName.getName(); |
| if (PreviousCriticalLoc.isValid()) |
| SemaRef.Diag(PreviousCriticalLoc, |
| diag::note_omp_previous_critical_region); |
| return true; |
| } |
| } else if (CurrentRegion == OMPD_barrier) { |
| // OpenMP [2.16, Nesting of Regions] |
| // A barrier region may not be closely nested inside a worksharing, |
| // explicit task, critical, ordered(TODO), atomic(TODO), or master |
| // region. |
| NestingProhibited = isOpenMPWorksharingDirective(ParentRegion) || |
| ParentRegion == OMPD_task || |
| ParentRegion == OMPD_master || |
| ParentRegion == OMPD_critical; |
| } else if (isOpenMPWorksharingDirective(CurrentRegion) && |
| !isOpenMPParallelDirective(CurrentRegion) && |
| !isOpenMPSimdDirective(CurrentRegion)) { |
| // OpenMP [2.16, Nesting of Regions] |
| // A worksharing region may not be closely nested inside a worksharing, |
| // explicit task, critical, ordered, atomic, or master region. |
| // TODO |
| NestingProhibited = (isOpenMPWorksharingDirective(ParentRegion) && |
| !isOpenMPSimdDirective(ParentRegion)) || |
| ParentRegion == OMPD_task || |
| ParentRegion == OMPD_master || |
| ParentRegion == OMPD_critical; |
| ShouldBeInParallelRegion = true; |
| } |
| if (NestingProhibited) { |
| SemaRef.Diag(StartLoc, diag::err_omp_prohibited_region) |
| << CloseNesting << getOpenMPDirectiveName(ParentRegion) |
| << ShouldBeInParallelRegion << getOpenMPDirectiveName(CurrentRegion); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| StmtResult Sema::ActOnOpenMPExecutableDirective(OpenMPDirectiveKind Kind, |
| const DeclarationNameInfo &DirName, |
| ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| StmtResult Res = StmtError(); |
| if (CheckNestingOfRegions(*this, DSAStack, Kind, DirName, StartLoc)) |
| return StmtError(); |
| |
| llvm::SmallVector<OMPClause *, 8> ClausesWithImplicit; |
| llvm::DenseMap<VarDecl *, Expr *> VarsWithInheritedDSA; |
| bool ErrorFound = false; |
| ClausesWithImplicit.append(Clauses.begin(), Clauses.end()); |
| if (AStmt) { |
| assert(isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| |
| // Check default data sharing attributes for referenced variables. |
| DSAAttrChecker DSAChecker(DSAStack, *this, cast<CapturedStmt>(AStmt)); |
| DSAChecker.Visit(cast<CapturedStmt>(AStmt)->getCapturedStmt()); |
| if (DSAChecker.isErrorFound()) |
| return StmtError(); |
| // Generate list of implicitly defined firstprivate variables. |
| VarsWithInheritedDSA = DSAChecker.getVarsWithInheritedDSA(); |
| |
| if (!DSAChecker.getImplicitFirstprivate().empty()) { |
| if (OMPClause *Implicit = ActOnOpenMPFirstprivateClause( |
| DSAChecker.getImplicitFirstprivate(), SourceLocation(), |
| SourceLocation(), SourceLocation())) { |
| ClausesWithImplicit.push_back(Implicit); |
| ErrorFound = cast<OMPFirstprivateClause>(Implicit)->varlist_size() != |
| DSAChecker.getImplicitFirstprivate().size(); |
| } else |
| ErrorFound = true; |
| } |
| } |
| |
| switch (Kind) { |
| case OMPD_parallel: |
| Res = ActOnOpenMPParallelDirective(ClausesWithImplicit, AStmt, StartLoc, |
| EndLoc); |
| break; |
| case OMPD_simd: |
| Res = ActOnOpenMPSimdDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc, |
| VarsWithInheritedDSA); |
| break; |
| case OMPD_for: |
| Res = ActOnOpenMPForDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc, |
| VarsWithInheritedDSA); |
| break; |
| case OMPD_sections: |
| Res = ActOnOpenMPSectionsDirective(ClausesWithImplicit, AStmt, StartLoc, |
| EndLoc); |
| break; |
| case OMPD_section: |
| assert(ClausesWithImplicit.empty() && |
| "No clauses are allowed for 'omp section' directive"); |
| Res = ActOnOpenMPSectionDirective(AStmt, StartLoc, EndLoc); |
| break; |
| case OMPD_single: |
| Res = ActOnOpenMPSingleDirective(ClausesWithImplicit, AStmt, StartLoc, |
| EndLoc); |
| break; |
| case OMPD_master: |
| assert(ClausesWithImplicit.empty() && |
| "No clauses are allowed for 'omp master' directive"); |
| Res = ActOnOpenMPMasterDirective(AStmt, StartLoc, EndLoc); |
| break; |
| case OMPD_critical: |
| assert(ClausesWithImplicit.empty() && |
| "No clauses are allowed for 'omp critical' directive"); |
| Res = ActOnOpenMPCriticalDirective(DirName, AStmt, StartLoc, EndLoc); |
| break; |
| case OMPD_parallel_for: |
| Res = ActOnOpenMPParallelForDirective(ClausesWithImplicit, AStmt, StartLoc, |
| EndLoc, VarsWithInheritedDSA); |
| break; |
| case OMPD_parallel_sections: |
| Res = ActOnOpenMPParallelSectionsDirective(ClausesWithImplicit, AStmt, |
| StartLoc, EndLoc); |
| break; |
| case OMPD_task: |
| Res = |
| ActOnOpenMPTaskDirective(ClausesWithImplicit, AStmt, StartLoc, EndLoc); |
| break; |
| case OMPD_taskyield: |
| assert(ClausesWithImplicit.empty() && |
| "No clauses are allowed for 'omp taskyield' directive"); |
| assert(AStmt == nullptr && |
| "No associated statement allowed for 'omp taskyield' directive"); |
| Res = ActOnOpenMPTaskyieldDirective(StartLoc, EndLoc); |
| break; |
| case OMPD_barrier: |
| assert(ClausesWithImplicit.empty() && |
| "No clauses are allowed for 'omp barrier' directive"); |
| assert(AStmt == nullptr && |
| "No associated statement allowed for 'omp barrier' directive"); |
| Res = ActOnOpenMPBarrierDirective(StartLoc, EndLoc); |
| break; |
| case OMPD_taskwait: |
| assert(ClausesWithImplicit.empty() && |
| "No clauses are allowed for 'omp taskwait' directive"); |
| assert(AStmt == nullptr && |
| "No associated statement allowed for 'omp taskwait' directive"); |
| Res = ActOnOpenMPTaskwaitDirective(StartLoc, EndLoc); |
| break; |
| case OMPD_flush: |
| assert(AStmt == nullptr && |
| "No associated statement allowed for 'omp flush' directive"); |
| Res = ActOnOpenMPFlushDirective(ClausesWithImplicit, StartLoc, EndLoc); |
| break; |
| case OMPD_threadprivate: |
| llvm_unreachable("OpenMP Directive is not allowed"); |
| case OMPD_unknown: |
| llvm_unreachable("Unknown OpenMP directive"); |
| } |
| |
| for (auto P : VarsWithInheritedDSA) { |
| Diag(P.second->getExprLoc(), diag::err_omp_no_dsa_for_variable) |
| << P.first << P.second->getSourceRange(); |
| } |
| if (!VarsWithInheritedDSA.empty()) |
| return StmtError(); |
| |
| if (ErrorFound) |
| return StmtError(); |
| return Res; |
| } |
| |
| StmtResult Sema::ActOnOpenMPParallelDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| CapturedStmt *CS = cast<CapturedStmt>(AStmt); |
| // 1.2.2 OpenMP Language Terminology |
| // Structured block - An executable statement with a single entry at the |
| // top and a single exit at the bottom. |
| // The point of exit cannot be a branch out of the structured block. |
| // longjmp() and throw() must not violate the entry/exit criteria. |
| CS->getCapturedDecl()->setNothrow(); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPParallelDirective::Create(Context, StartLoc, EndLoc, Clauses, |
| AStmt); |
| } |
| |
| namespace { |
| /// \brief Helper class for checking canonical form of the OpenMP loops and |
| /// extracting iteration space of each loop in the loop nest, that will be used |
| /// for IR generation. |
| class OpenMPIterationSpaceChecker { |
| /// \brief Reference to Sema. |
| Sema &SemaRef; |
| /// \brief A location for diagnostics (when there is no some better location). |
| SourceLocation DefaultLoc; |
| /// \brief A location for diagnostics (when increment is not compatible). |
| SourceLocation ConditionLoc; |
| /// \brief A source location for referring to condition later. |
| SourceRange ConditionSrcRange; |
| /// \brief Loop variable. |
| VarDecl *Var; |
| /// \brief Lower bound (initializer for the var). |
| Expr *LB; |
| /// \brief Upper bound. |
| Expr *UB; |
| /// \brief Loop step (increment). |
| Expr *Step; |
| /// \brief This flag is true when condition is one of: |
| /// Var < UB |
| /// Var <= UB |
| /// UB > Var |
| /// UB >= Var |
| bool TestIsLessOp; |
| /// \brief This flag is true when condition is strict ( < or > ). |
| bool TestIsStrictOp; |
| /// \brief This flag is true when step is subtracted on each iteration. |
| bool SubtractStep; |
| |
| public: |
| OpenMPIterationSpaceChecker(Sema &SemaRef, SourceLocation DefaultLoc) |
| : SemaRef(SemaRef), DefaultLoc(DefaultLoc), ConditionLoc(DefaultLoc), |
| ConditionSrcRange(SourceRange()), Var(nullptr), LB(nullptr), |
| UB(nullptr), Step(nullptr), TestIsLessOp(false), TestIsStrictOp(false), |
| SubtractStep(false) {} |
| /// \brief Check init-expr for canonical loop form and save loop counter |
| /// variable - #Var and its initialization value - #LB. |
| bool CheckInit(Stmt *S); |
| /// \brief Check test-expr for canonical form, save upper-bound (#UB), flags |
| /// for less/greater and for strict/non-strict comparison. |
| bool CheckCond(Expr *S); |
| /// \brief Check incr-expr for canonical loop form and return true if it |
| /// does not conform, otherwise save loop step (#Step). |
| bool CheckInc(Expr *S); |
| /// \brief Return the loop counter variable. |
| VarDecl *GetLoopVar() const { return Var; } |
| /// \brief Return true if any expression is dependent. |
| bool Dependent() const; |
| |
| private: |
| /// \brief Check the right-hand side of an assignment in the increment |
| /// expression. |
| bool CheckIncRHS(Expr *RHS); |
| /// \brief Helper to set loop counter variable and its initializer. |
| bool SetVarAndLB(VarDecl *NewVar, Expr *NewLB); |
| /// \brief Helper to set upper bound. |
| bool SetUB(Expr *NewUB, bool LessOp, bool StrictOp, const SourceRange &SR, |
| const SourceLocation &SL); |
| /// \brief Helper to set loop increment. |
| bool SetStep(Expr *NewStep, bool Subtract); |
| }; |
| |
| bool OpenMPIterationSpaceChecker::Dependent() const { |
| if (!Var) { |
| assert(!LB && !UB && !Step); |
| return false; |
| } |
| return Var->getType()->isDependentType() || (LB && LB->isValueDependent()) || |
| (UB && UB->isValueDependent()) || (Step && Step->isValueDependent()); |
| } |
| |
| bool OpenMPIterationSpaceChecker::SetVarAndLB(VarDecl *NewVar, Expr *NewLB) { |
| // State consistency checking to ensure correct usage. |
| assert(Var == nullptr && LB == nullptr && UB == nullptr && Step == nullptr && |
| !TestIsLessOp && !TestIsStrictOp); |
| if (!NewVar || !NewLB) |
| return true; |
| Var = NewVar; |
| LB = NewLB; |
| return false; |
| } |
| |
| bool OpenMPIterationSpaceChecker::SetUB(Expr *NewUB, bool LessOp, bool StrictOp, |
| const SourceRange &SR, |
| const SourceLocation &SL) { |
| // State consistency checking to ensure correct usage. |
| assert(Var != nullptr && LB != nullptr && UB == nullptr && Step == nullptr && |
| !TestIsLessOp && !TestIsStrictOp); |
| if (!NewUB) |
| return true; |
| UB = NewUB; |
| TestIsLessOp = LessOp; |
| TestIsStrictOp = StrictOp; |
| ConditionSrcRange = SR; |
| ConditionLoc = SL; |
| return false; |
| } |
| |
| bool OpenMPIterationSpaceChecker::SetStep(Expr *NewStep, bool Subtract) { |
| // State consistency checking to ensure correct usage. |
| assert(Var != nullptr && LB != nullptr && Step == nullptr); |
| if (!NewStep) |
| return true; |
| if (!NewStep->isValueDependent()) { |
| // Check that the step is integer expression. |
| SourceLocation StepLoc = NewStep->getLocStart(); |
| ExprResult Val = |
| SemaRef.PerformOpenMPImplicitIntegerConversion(StepLoc, NewStep); |
| if (Val.isInvalid()) |
| return true; |
| NewStep = Val.get(); |
| |
| // OpenMP [2.6, Canonical Loop Form, Restrictions] |
| // If test-expr is of form var relational-op b and relational-op is < or |
| // <= then incr-expr must cause var to increase on each iteration of the |
| // loop. If test-expr is of form var relational-op b and relational-op is |
| // > or >= then incr-expr must cause var to decrease on each iteration of |
| // the loop. |
| // If test-expr is of form b relational-op var and relational-op is < or |
| // <= then incr-expr must cause var to decrease on each iteration of the |
| // loop. If test-expr is of form b relational-op var and relational-op is |
| // > or >= then incr-expr must cause var to increase on each iteration of |
| // the loop. |
| llvm::APSInt Result; |
| bool IsConstant = NewStep->isIntegerConstantExpr(Result, SemaRef.Context); |
| bool IsUnsigned = !NewStep->getType()->hasSignedIntegerRepresentation(); |
| bool IsConstNeg = |
| IsConstant && Result.isSigned() && (Subtract != Result.isNegative()); |
| bool IsConstZero = IsConstant && !Result.getBoolValue(); |
| if (UB && (IsConstZero || |
| (TestIsLessOp ? (IsConstNeg || (IsUnsigned && Subtract)) |
| : (!IsConstNeg || (IsUnsigned && !Subtract))))) { |
| SemaRef.Diag(NewStep->getExprLoc(), |
| diag::err_omp_loop_incr_not_compatible) |
| << Var << TestIsLessOp << NewStep->getSourceRange(); |
| SemaRef.Diag(ConditionLoc, |
| diag::note_omp_loop_cond_requres_compatible_incr) |
| << TestIsLessOp << ConditionSrcRange; |
| return true; |
| } |
| } |
| |
| Step = NewStep; |
| SubtractStep = Subtract; |
| return false; |
| } |
| |
| bool OpenMPIterationSpaceChecker::CheckInit(Stmt *S) { |
| // Check init-expr for canonical loop form and save loop counter |
| // variable - #Var and its initialization value - #LB. |
| // OpenMP [2.6] Canonical loop form. init-expr may be one of the following: |
| // var = lb |
| // integer-type var = lb |
| // random-access-iterator-type var = lb |
| // pointer-type var = lb |
| // |
| if (!S) { |
| SemaRef.Diag(DefaultLoc, diag::err_omp_loop_not_canonical_init); |
| return true; |
| } |
| if (Expr *E = dyn_cast<Expr>(S)) |
| S = E->IgnoreParens(); |
| if (auto BO = dyn_cast<BinaryOperator>(S)) { |
| if (BO->getOpcode() == BO_Assign) |
| if (auto DRE = dyn_cast<DeclRefExpr>(BO->getLHS()->IgnoreParens())) |
| return SetVarAndLB(dyn_cast<VarDecl>(DRE->getDecl()), BO->getLHS()); |
| } else if (auto DS = dyn_cast<DeclStmt>(S)) { |
| if (DS->isSingleDecl()) { |
| if (auto Var = dyn_cast_or_null<VarDecl>(DS->getSingleDecl())) { |
| if (Var->hasInit()) { |
| // Accept non-canonical init form here but emit ext. warning. |
| if (Var->getInitStyle() != VarDecl::CInit) |
| SemaRef.Diag(S->getLocStart(), |
| diag::ext_omp_loop_not_canonical_init) |
| << S->getSourceRange(); |
| return SetVarAndLB(Var, Var->getInit()); |
| } |
| } |
| } |
| } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(S)) |
| if (CE->getOperator() == OO_Equal) |
| if (auto DRE = dyn_cast<DeclRefExpr>(CE->getArg(0))) |
| return SetVarAndLB(dyn_cast<VarDecl>(DRE->getDecl()), CE->getArg(1)); |
| |
| SemaRef.Diag(S->getLocStart(), diag::err_omp_loop_not_canonical_init) |
| << S->getSourceRange(); |
| return true; |
| } |
| |
| /// \brief Ignore parenthesizes, implicit casts, copy constructor and return the |
| /// variable (which may be the loop variable) if possible. |
| static const VarDecl *GetInitVarDecl(const Expr *E) { |
| if (!E) |
| return nullptr; |
| E = E->IgnoreParenImpCasts(); |
| if (auto *CE = dyn_cast_or_null<CXXConstructExpr>(E)) |
| if (const CXXConstructorDecl *Ctor = CE->getConstructor()) |
| if (Ctor->isCopyConstructor() && CE->getNumArgs() == 1 && |
| CE->getArg(0) != nullptr) |
| E = CE->getArg(0)->IgnoreParenImpCasts(); |
| auto DRE = dyn_cast_or_null<DeclRefExpr>(E); |
| if (!DRE) |
| return nullptr; |
| return dyn_cast<VarDecl>(DRE->getDecl()); |
| } |
| |
| bool OpenMPIterationSpaceChecker::CheckCond(Expr *S) { |
| // Check test-expr for canonical form, save upper-bound UB, flags for |
| // less/greater and for strict/non-strict comparison. |
| // OpenMP [2.6] Canonical loop form. Test-expr may be one of the following: |
| // var relational-op b |
| // b relational-op var |
| // |
| if (!S) { |
| SemaRef.Diag(DefaultLoc, diag::err_omp_loop_not_canonical_cond) << Var; |
| return true; |
| } |
| S = S->IgnoreParenImpCasts(); |
| SourceLocation CondLoc = S->getLocStart(); |
| if (auto BO = dyn_cast<BinaryOperator>(S)) { |
| if (BO->isRelationalOp()) { |
| if (GetInitVarDecl(BO->getLHS()) == Var) |
| return SetUB(BO->getRHS(), |
| (BO->getOpcode() == BO_LT || BO->getOpcode() == BO_LE), |
| (BO->getOpcode() == BO_LT || BO->getOpcode() == BO_GT), |
| BO->getSourceRange(), BO->getOperatorLoc()); |
| if (GetInitVarDecl(BO->getRHS()) == Var) |
| return SetUB(BO->getLHS(), |
| (BO->getOpcode() == BO_GT || BO->getOpcode() == BO_GE), |
| (BO->getOpcode() == BO_LT || BO->getOpcode() == BO_GT), |
| BO->getSourceRange(), BO->getOperatorLoc()); |
| } |
| } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(S)) { |
| if (CE->getNumArgs() == 2) { |
| auto Op = CE->getOperator(); |
| switch (Op) { |
| case OO_Greater: |
| case OO_GreaterEqual: |
| case OO_Less: |
| case OO_LessEqual: |
| if (GetInitVarDecl(CE->getArg(0)) == Var) |
| return SetUB(CE->getArg(1), Op == OO_Less || Op == OO_LessEqual, |
| Op == OO_Less || Op == OO_Greater, CE->getSourceRange(), |
| CE->getOperatorLoc()); |
| if (GetInitVarDecl(CE->getArg(1)) == Var) |
| return SetUB(CE->getArg(0), Op == OO_Greater || Op == OO_GreaterEqual, |
| Op == OO_Less || Op == OO_Greater, CE->getSourceRange(), |
| CE->getOperatorLoc()); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| SemaRef.Diag(CondLoc, diag::err_omp_loop_not_canonical_cond) |
| << S->getSourceRange() << Var; |
| return true; |
| } |
| |
| bool OpenMPIterationSpaceChecker::CheckIncRHS(Expr *RHS) { |
| // RHS of canonical loop form increment can be: |
| // var + incr |
| // incr + var |
| // var - incr |
| // |
| RHS = RHS->IgnoreParenImpCasts(); |
| if (auto BO = dyn_cast<BinaryOperator>(RHS)) { |
| if (BO->isAdditiveOp()) { |
| bool IsAdd = BO->getOpcode() == BO_Add; |
| if (GetInitVarDecl(BO->getLHS()) == Var) |
| return SetStep(BO->getRHS(), !IsAdd); |
| if (IsAdd && GetInitVarDecl(BO->getRHS()) == Var) |
| return SetStep(BO->getLHS(), false); |
| } |
| } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(RHS)) { |
| bool IsAdd = CE->getOperator() == OO_Plus; |
| if ((IsAdd || CE->getOperator() == OO_Minus) && CE->getNumArgs() == 2) { |
| if (GetInitVarDecl(CE->getArg(0)) == Var) |
| return SetStep(CE->getArg(1), !IsAdd); |
| if (IsAdd && GetInitVarDecl(CE->getArg(1)) == Var) |
| return SetStep(CE->getArg(0), false); |
| } |
| } |
| SemaRef.Diag(RHS->getLocStart(), diag::err_omp_loop_not_canonical_incr) |
| << RHS->getSourceRange() << Var; |
| return true; |
| } |
| |
| bool OpenMPIterationSpaceChecker::CheckInc(Expr *S) { |
| // Check incr-expr for canonical loop form and return true if it |
| // does not conform. |
| // OpenMP [2.6] Canonical loop form. Test-expr may be one of the following: |
| // ++var |
| // var++ |
| // --var |
| // var-- |
| // var += incr |
| // var -= incr |
| // var = var + incr |
| // var = incr + var |
| // var = var - incr |
| // |
| if (!S) { |
| SemaRef.Diag(DefaultLoc, diag::err_omp_loop_not_canonical_incr) << Var; |
| return true; |
| } |
| S = S->IgnoreParens(); |
| if (auto UO = dyn_cast<UnaryOperator>(S)) { |
| if (UO->isIncrementDecrementOp() && GetInitVarDecl(UO->getSubExpr()) == Var) |
| return SetStep( |
| SemaRef.ActOnIntegerConstant(UO->getLocStart(), |
| (UO->isDecrementOp() ? -1 : 1)).get(), |
| false); |
| } else if (auto BO = dyn_cast<BinaryOperator>(S)) { |
| switch (BO->getOpcode()) { |
| case BO_AddAssign: |
| case BO_SubAssign: |
| if (GetInitVarDecl(BO->getLHS()) == Var) |
| return SetStep(BO->getRHS(), BO->getOpcode() == BO_SubAssign); |
| break; |
| case BO_Assign: |
| if (GetInitVarDecl(BO->getLHS()) == Var) |
| return CheckIncRHS(BO->getRHS()); |
| break; |
| default: |
| break; |
| } |
| } else if (auto CE = dyn_cast<CXXOperatorCallExpr>(S)) { |
| switch (CE->getOperator()) { |
| case OO_PlusPlus: |
| case OO_MinusMinus: |
| if (GetInitVarDecl(CE->getArg(0)) == Var) |
| return SetStep( |
| SemaRef.ActOnIntegerConstant( |
| CE->getLocStart(), |
| ((CE->getOperator() == OO_MinusMinus) ? -1 : 1)).get(), |
| false); |
| break; |
| case OO_PlusEqual: |
| case OO_MinusEqual: |
| if (GetInitVarDecl(CE->getArg(0)) == Var) |
| return SetStep(CE->getArg(1), CE->getOperator() == OO_MinusEqual); |
| break; |
| case OO_Equal: |
| if (GetInitVarDecl(CE->getArg(0)) == Var) |
| return CheckIncRHS(CE->getArg(1)); |
| break; |
| default: |
| break; |
| } |
| } |
| SemaRef.Diag(S->getLocStart(), diag::err_omp_loop_not_canonical_incr) |
| << S->getSourceRange() << Var; |
| return true; |
| } |
| } // namespace |
| |
| /// \brief Called on a for stmt to check and extract its iteration space |
| /// for further processing (such as collapsing). |
| static bool CheckOpenMPIterationSpace( |
| OpenMPDirectiveKind DKind, Stmt *S, Sema &SemaRef, DSAStackTy &DSA, |
| unsigned CurrentNestedLoopCount, unsigned NestedLoopCount, |
| Expr *NestedLoopCountExpr, |
| llvm::DenseMap<VarDecl *, Expr *> &VarsWithImplicitDSA) { |
| // OpenMP [2.6, Canonical Loop Form] |
| // for (init-expr; test-expr; incr-expr) structured-block |
| auto For = dyn_cast_or_null<ForStmt>(S); |
| if (!For) { |
| SemaRef.Diag(S->getLocStart(), diag::err_omp_not_for) |
| << (NestedLoopCountExpr != nullptr) << getOpenMPDirectiveName(DKind) |
| << NestedLoopCount << (CurrentNestedLoopCount > 0) |
| << CurrentNestedLoopCount; |
| if (NestedLoopCount > 1) |
| SemaRef.Diag(NestedLoopCountExpr->getExprLoc(), |
| diag::note_omp_collapse_expr) |
| << NestedLoopCountExpr->getSourceRange(); |
| return true; |
| } |
| assert(For->getBody()); |
| |
| OpenMPIterationSpaceChecker ISC(SemaRef, For->getForLoc()); |
| |
| // Check init. |
| auto Init = For->getInit(); |
| if (ISC.CheckInit(Init)) { |
| return true; |
| } |
| |
| bool HasErrors = false; |
| |
| // Check loop variable's type. |
| auto Var = ISC.GetLoopVar(); |
| |
| // OpenMP [2.6, Canonical Loop Form] |
| // Var is one of the following: |
| // A variable of signed or unsigned integer type. |
| // For C++, a variable of a random access iterator type. |
| // For C, a variable of a pointer type. |
| auto VarType = Var->getType(); |
| if (!VarType->isDependentType() && !VarType->isIntegerType() && |
| !VarType->isPointerType() && |
| !(SemaRef.getLangOpts().CPlusPlus && VarType->isOverloadableType())) { |
| SemaRef.Diag(Init->getLocStart(), diag::err_omp_loop_variable_type) |
| << SemaRef.getLangOpts().CPlusPlus; |
| HasErrors = true; |
| } |
| |
| // OpenMP, 2.14.1.1 Data-sharing Attribute Rules for Variables Referenced in a |
| // Construct |
| // The loop iteration variable(s) in the associated for-loop(s) of a for or |
| // parallel for construct is (are) private. |
| // The loop iteration variable in the associated for-loop of a simd construct |
| // with just one associated for-loop is linear with a constant-linear-step |
| // that is the increment of the associated for-loop. |
| // Exclude loop var from the list of variables with implicitly defined data |
| // sharing attributes. |
| while (VarsWithImplicitDSA.count(Var) > 0) |
| VarsWithImplicitDSA.erase(Var); |
| |
| // OpenMP [2.14.1.1, Data-sharing Attribute Rules for Variables Referenced in |
| // a Construct, C/C++]. |
| // The loop iteration variable in the associated for-loop of a simd construct |
| // with just one associated for-loop may be listed in a linear clause with a |
| // constant-linear-step that is the increment of the associated for-loop. |
| // The loop iteration variable(s) in the associated for-loop(s) of a for or |
| // parallel for construct may be listed in a private or lastprivate clause. |
| DSAStackTy::DSAVarData DVar = DSA.getTopDSA(Var, false); |
| auto PredeterminedCKind = |
| isOpenMPSimdDirective(DKind) |
| ? ((NestedLoopCount == 1) ? OMPC_linear : OMPC_lastprivate) |
| : OMPC_private; |
| if (((isOpenMPSimdDirective(DKind) && DVar.CKind != OMPC_unknown && |
| DVar.CKind != PredeterminedCKind) || |
| (isOpenMPWorksharingDirective(DKind) && DVar.CKind != OMPC_unknown && |
| DVar.CKind != OMPC_private && DVar.CKind != OMPC_lastprivate)) && |
| (DVar.CKind != OMPC_private || DVar.RefExpr != nullptr)) { |
| SemaRef.Diag(Init->getLocStart(), diag::err_omp_loop_var_dsa) |
| << getOpenMPClauseName(DVar.CKind) << getOpenMPDirectiveName(DKind) |
| << getOpenMPClauseName(PredeterminedCKind); |
| ReportOriginalDSA(SemaRef, &DSA, Var, DVar, true); |
| HasErrors = true; |
| } else { |
| // Make the loop iteration variable private (for worksharing constructs), |
| // linear (for simd directives with the only one associated loop) or |
| // lastprivate (for simd directives with several collapsed loops). |
| DSA.addDSA(Var, nullptr, PredeterminedCKind); |
| } |
| |
| assert(isOpenMPLoopDirective(DKind) && "DSA for non-loop vars"); |
| |
| // Check test-expr. |
| HasErrors |= ISC.CheckCond(For->getCond()); |
| |
| // Check incr-expr. |
| HasErrors |= ISC.CheckInc(For->getInc()); |
| |
| if (ISC.Dependent()) |
| return HasErrors; |
| |
| // FIXME: Build loop's iteration space representation. |
| return HasErrors; |
| } |
| |
| /// \brief A helper routine to skip no-op (attributed, compound) stmts get the |
| /// next nested for loop. If \a IgnoreCaptured is true, it skips captured stmt |
| /// to get the first for loop. |
| static Stmt *IgnoreContainerStmts(Stmt *S, bool IgnoreCaptured) { |
| if (IgnoreCaptured) |
| if (auto CapS = dyn_cast_or_null<CapturedStmt>(S)) |
| S = CapS->getCapturedStmt(); |
| // OpenMP [2.8.1, simd construct, Restrictions] |
| // All loops associated with the construct must be perfectly nested; that is, |
| // there must be no intervening code nor any OpenMP directive between any two |
| // loops. |
| while (true) { |
| if (auto AS = dyn_cast_or_null<AttributedStmt>(S)) |
| S = AS->getSubStmt(); |
| else if (auto CS = dyn_cast_or_null<CompoundStmt>(S)) { |
| if (CS->size() != 1) |
| break; |
| S = CS->body_back(); |
| } else |
| break; |
| } |
| return S; |
| } |
| |
| /// \brief Called on a for stmt to check itself and nested loops (if any). |
| /// \return Returns 0 if one of the collapsed stmts is not canonical for loop, |
| /// number of collapsed loops otherwise. |
| static unsigned |
| CheckOpenMPLoop(OpenMPDirectiveKind DKind, Expr *NestedLoopCountExpr, |
| Stmt *AStmt, Sema &SemaRef, DSAStackTy &DSA, |
| llvm::DenseMap<VarDecl *, Expr *> &VarsWithImplicitDSA) { |
| unsigned NestedLoopCount = 1; |
| if (NestedLoopCountExpr) { |
| // Found 'collapse' clause - calculate collapse number. |
| llvm::APSInt Result; |
| if (NestedLoopCountExpr->EvaluateAsInt(Result, SemaRef.getASTContext())) |
| NestedLoopCount = Result.getLimitedValue(); |
| } |
| // This is helper routine for loop directives (e.g., 'for', 'simd', |
| // 'for simd', etc.). |
| Stmt *CurStmt = IgnoreContainerStmts(AStmt, true); |
| for (unsigned Cnt = 0; Cnt < NestedLoopCount; ++Cnt) { |
| if (CheckOpenMPIterationSpace(DKind, CurStmt, SemaRef, DSA, Cnt, |
| NestedLoopCount, NestedLoopCountExpr, |
| VarsWithImplicitDSA)) |
| return 0; |
| // Move on to the next nested for loop, or to the loop body. |
| CurStmt = IgnoreContainerStmts(cast<ForStmt>(CurStmt)->getBody(), false); |
| } |
| |
| // FIXME: Build resulting iteration space for IR generation (collapsing |
| // iteration spaces when loop count > 1 ('collapse' clause)). |
| return NestedLoopCount; |
| } |
| |
| static Expr *GetCollapseNumberExpr(ArrayRef<OMPClause *> Clauses) { |
| auto CollapseFilter = [](const OMPClause *C) -> bool { |
| return C->getClauseKind() == OMPC_collapse; |
| }; |
| OMPExecutableDirective::filtered_clause_iterator<decltype(CollapseFilter)> I( |
| Clauses, CollapseFilter); |
| if (I) |
| return cast<OMPCollapseClause>(*I)->getNumForLoops(); |
| return nullptr; |
| } |
| |
| StmtResult Sema::ActOnOpenMPSimdDirective( |
| ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
| SourceLocation EndLoc, |
| llvm::DenseMap<VarDecl *, Expr *> &VarsWithImplicitDSA) { |
| // In presence of clause 'collapse', it will define the nested loops number. |
| unsigned NestedLoopCount = |
| CheckOpenMPLoop(OMPD_simd, GetCollapseNumberExpr(Clauses), AStmt, *this, |
| *DSAStack, VarsWithImplicitDSA); |
| if (NestedLoopCount == 0) |
| return StmtError(); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| return OMPSimdDirective::Create(Context, StartLoc, EndLoc, NestedLoopCount, |
| Clauses, AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPForDirective( |
| ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
| SourceLocation EndLoc, |
| llvm::DenseMap<VarDecl *, Expr *> &VarsWithImplicitDSA) { |
| // In presence of clause 'collapse', it will define the nested loops number. |
| unsigned NestedLoopCount = |
| CheckOpenMPLoop(OMPD_for, GetCollapseNumberExpr(Clauses), AStmt, *this, |
| *DSAStack, VarsWithImplicitDSA); |
| if (NestedLoopCount == 0) |
| return StmtError(); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| return OMPForDirective::Create(Context, StartLoc, EndLoc, NestedLoopCount, |
| Clauses, AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPSectionsDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| auto BaseStmt = AStmt; |
| while (CapturedStmt *CS = dyn_cast_or_null<CapturedStmt>(BaseStmt)) |
| BaseStmt = CS->getCapturedStmt(); |
| if (auto C = dyn_cast_or_null<CompoundStmt>(BaseStmt)) { |
| auto S = C->children(); |
| if (!S) |
| return StmtError(); |
| // All associated statements must be '#pragma omp section' except for |
| // the first one. |
| for (++S; S; ++S) { |
| auto SectionStmt = *S; |
| if (!SectionStmt || !isa<OMPSectionDirective>(SectionStmt)) { |
| if (SectionStmt) |
| Diag(SectionStmt->getLocStart(), |
| diag::err_omp_sections_substmt_not_section); |
| return StmtError(); |
| } |
| } |
| } else { |
| Diag(AStmt->getLocStart(), diag::err_omp_sections_not_compound_stmt); |
| return StmtError(); |
| } |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPSectionsDirective::Create(Context, StartLoc, EndLoc, Clauses, |
| AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPSectionDirective(Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPSectionDirective::Create(Context, StartLoc, EndLoc, AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPSingleDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPSingleDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPMasterDirective(Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPMasterDirective::Create(Context, StartLoc, EndLoc, AStmt); |
| } |
| |
| StmtResult |
| Sema::ActOnOpenMPCriticalDirective(const DeclarationNameInfo &DirName, |
| Stmt *AStmt, SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPCriticalDirective::Create(Context, DirName, StartLoc, EndLoc, |
| AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPParallelForDirective( |
| ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
| SourceLocation EndLoc, |
| llvm::DenseMap<VarDecl *, Expr *> &VarsWithImplicitDSA) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| CapturedStmt *CS = cast<CapturedStmt>(AStmt); |
| // 1.2.2 OpenMP Language Terminology |
| // Structured block - An executable statement with a single entry at the |
| // top and a single exit at the bottom. |
| // The point of exit cannot be a branch out of the structured block. |
| // longjmp() and throw() must not violate the entry/exit criteria. |
| CS->getCapturedDecl()->setNothrow(); |
| |
| // In presence of clause 'collapse', it will define the nested loops number. |
| unsigned NestedLoopCount = |
| CheckOpenMPLoop(OMPD_parallel_for, GetCollapseNumberExpr(Clauses), AStmt, |
| *this, *DSAStack, VarsWithImplicitDSA); |
| if (NestedLoopCount == 0) |
| return StmtError(); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| return OMPParallelForDirective::Create(Context, StartLoc, EndLoc, |
| NestedLoopCount, Clauses, AStmt); |
| } |
| |
| StmtResult |
| Sema::ActOnOpenMPParallelSectionsDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| auto BaseStmt = AStmt; |
| while (CapturedStmt *CS = dyn_cast_or_null<CapturedStmt>(BaseStmt)) |
| BaseStmt = CS->getCapturedStmt(); |
| if (auto C = dyn_cast_or_null<CompoundStmt>(BaseStmt)) { |
| auto S = C->children(); |
| if (!S) |
| return StmtError(); |
| // All associated statements must be '#pragma omp section' except for |
| // the first one. |
| for (++S; S; ++S) { |
| auto SectionStmt = *S; |
| if (!SectionStmt || !isa<OMPSectionDirective>(SectionStmt)) { |
| if (SectionStmt) |
| Diag(SectionStmt->getLocStart(), |
| diag::err_omp_parallel_sections_substmt_not_section); |
| return StmtError(); |
| } |
| } |
| } else { |
| Diag(AStmt->getLocStart(), |
| diag::err_omp_parallel_sections_not_compound_stmt); |
| return StmtError(); |
| } |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPParallelSectionsDirective::Create(Context, StartLoc, EndLoc, |
| Clauses, AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPTaskDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| CapturedStmt *CS = cast<CapturedStmt>(AStmt); |
| // 1.2.2 OpenMP Language Terminology |
| // Structured block - An executable statement with a single entry at the |
| // top and a single exit at the bottom. |
| // The point of exit cannot be a branch out of the structured block. |
| // longjmp() and throw() must not violate the entry/exit criteria. |
| CS->getCapturedDecl()->setNothrow(); |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return OMPTaskDirective::Create(Context, StartLoc, EndLoc, Clauses, AStmt); |
| } |
| |
| StmtResult Sema::ActOnOpenMPTaskyieldDirective(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return OMPTaskyieldDirective::Create(Context, StartLoc, EndLoc); |
| } |
| |
| StmtResult Sema::ActOnOpenMPBarrierDirective(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return OMPBarrierDirective::Create(Context, StartLoc, EndLoc); |
| } |
| |
| StmtResult Sema::ActOnOpenMPTaskwaitDirective(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return OMPTaskwaitDirective::Create(Context, StartLoc, EndLoc); |
| } |
| |
| StmtResult Sema::ActOnOpenMPFlushDirective(ArrayRef<OMPClause *> Clauses, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(Clauses.size() <= 1 && "Extra clauses in flush directive"); |
| return OMPFlushDirective::Create(Context, StartLoc, EndLoc, Clauses); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSingleExprClause(OpenMPClauseKind Kind, Expr *Expr, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| OMPClause *Res = nullptr; |
| switch (Kind) { |
| case OMPC_if: |
| Res = ActOnOpenMPIfClause(Expr, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_final: |
| Res = ActOnOpenMPFinalClause(Expr, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_num_threads: |
| Res = ActOnOpenMPNumThreadsClause(Expr, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_safelen: |
| Res = ActOnOpenMPSafelenClause(Expr, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_collapse: |
| Res = ActOnOpenMPCollapseClause(Expr, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_default: |
| case OMPC_proc_bind: |
| case OMPC_schedule: |
| case OMPC_private: |
| case OMPC_firstprivate: |
| case OMPC_lastprivate: |
| case OMPC_shared: |
| case OMPC_reduction: |
| case OMPC_linear: |
| case OMPC_aligned: |
| case OMPC_copyin: |
| case OMPC_copyprivate: |
| case OMPC_ordered: |
| case OMPC_nowait: |
| case OMPC_untied: |
| case OMPC_mergeable: |
| case OMPC_threadprivate: |
| case OMPC_flush: |
| case OMPC_unknown: |
| llvm_unreachable("Clause is not allowed."); |
| } |
| return Res; |
| } |
| |
| OMPClause *Sema::ActOnOpenMPIfClause(Expr *Condition, SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| Expr *ValExpr = Condition; |
| if (!Condition->isValueDependent() && !Condition->isTypeDependent() && |
| !Condition->isInstantiationDependent() && |
| !Condition->containsUnexpandedParameterPack()) { |
| ExprResult Val = ActOnBooleanCondition(DSAStack->getCurScope(), |
| Condition->getExprLoc(), Condition); |
| if (Val.isInvalid()) |
| return nullptr; |
| |
| ValExpr = Val.get(); |
| } |
| |
| return new (Context) OMPIfClause(ValExpr, StartLoc, LParenLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPFinalClause(Expr *Condition, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| Expr *ValExpr = Condition; |
| if (!Condition->isValueDependent() && !Condition->isTypeDependent() && |
| !Condition->isInstantiationDependent() && |
| !Condition->containsUnexpandedParameterPack()) { |
| ExprResult Val = ActOnBooleanCondition(DSAStack->getCurScope(), |
| Condition->getExprLoc(), Condition); |
| if (Val.isInvalid()) |
| return nullptr; |
| |
| ValExpr = Val.get(); |
| } |
| |
| return new (Context) OMPFinalClause(ValExpr, StartLoc, LParenLoc, EndLoc); |
| } |
| |
| ExprResult Sema::PerformOpenMPImplicitIntegerConversion(SourceLocation Loc, |
| Expr *Op) { |
| if (!Op) |
| return ExprError(); |
| |
| class IntConvertDiagnoser : public ICEConvertDiagnoser { |
| public: |
| IntConvertDiagnoser() |
| : ICEConvertDiagnoser(/*AllowScopedEnumerations*/ false, false, true) {} |
| SemaDiagnosticBuilder diagnoseNotInt(Sema &S, SourceLocation Loc, |
| QualType T) override { |
| return S.Diag(Loc, diag::err_omp_not_integral) << T; |
| } |
| SemaDiagnosticBuilder diagnoseIncomplete(Sema &S, SourceLocation Loc, |
| QualType T) override { |
| return S.Diag(Loc, diag::err_omp_incomplete_type) << T; |
| } |
| SemaDiagnosticBuilder diagnoseExplicitConv(Sema &S, SourceLocation Loc, |
| QualType T, |
| QualType ConvTy) override { |
| return S.Diag(Loc, diag::err_omp_explicit_conversion) << T << ConvTy; |
| } |
| SemaDiagnosticBuilder noteExplicitConv(Sema &S, CXXConversionDecl *Conv, |
| QualType ConvTy) override { |
| return S.Diag(Conv->getLocation(), diag::note_omp_conversion_here) |
| << ConvTy->isEnumeralType() << ConvTy; |
| } |
| SemaDiagnosticBuilder diagnoseAmbiguous(Sema &S, SourceLocation Loc, |
| QualType T) override { |
| return S.Diag(Loc, diag::err_omp_ambiguous_conversion) << T; |
| } |
| SemaDiagnosticBuilder noteAmbiguous(Sema &S, CXXConversionDecl *Conv, |
| QualType ConvTy) override { |
| return S.Diag(Conv->getLocation(), diag::note_omp_conversion_here) |
| << ConvTy->isEnumeralType() << ConvTy; |
| } |
| SemaDiagnosticBuilder diagnoseConversion(Sema &, SourceLocation, QualType, |
| QualType) override { |
| llvm_unreachable("conversion functions are permitted"); |
| } |
| } ConvertDiagnoser; |
| return PerformContextualImplicitConversion(Loc, Op, ConvertDiagnoser); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPNumThreadsClause(Expr *NumThreads, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| Expr *ValExpr = NumThreads; |
| if (!NumThreads->isValueDependent() && !NumThreads->isTypeDependent() && |
| !NumThreads->isInstantiationDependent() && |
| !NumThreads->containsUnexpandedParameterPack()) { |
| SourceLocation NumThreadsLoc = NumThreads->getLocStart(); |
| ExprResult Val = |
| PerformOpenMPImplicitIntegerConversion(NumThreadsLoc, NumThreads); |
| if (Val.isInvalid()) |
| return nullptr; |
| |
| ValExpr = Val.get(); |
| |
| // OpenMP [2.5, Restrictions] |
| // The num_threads expression must evaluate to a positive integer value. |
| llvm::APSInt Result; |
| if (ValExpr->isIntegerConstantExpr(Result, Context) && Result.isSigned() && |
| !Result.isStrictlyPositive()) { |
| Diag(NumThreadsLoc, diag::err_omp_negative_expression_in_clause) |
| << "num_threads" << NumThreads->getSourceRange(); |
| return nullptr; |
| } |
| } |
| |
| return new (Context) |
| OMPNumThreadsClause(ValExpr, StartLoc, LParenLoc, EndLoc); |
| } |
| |
| ExprResult Sema::VerifyPositiveIntegerConstantInClause(Expr *E, |
| OpenMPClauseKind CKind) { |
| if (!E) |
| return ExprError(); |
| if (E->isValueDependent() || E->isTypeDependent() || |
| E->isInstantiationDependent() || E->containsUnexpandedParameterPack()) |
| return E; |
| llvm::APSInt Result; |
| ExprResult ICE = VerifyIntegerConstantExpression(E, &Result); |
| if (ICE.isInvalid()) |
| return ExprError(); |
| if (!Result.isStrictlyPositive()) { |
| Diag(E->getExprLoc(), diag::err_omp_negative_expression_in_clause) |
| << getOpenMPClauseName(CKind) << E->getSourceRange(); |
| return ExprError(); |
| } |
| return ICE; |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSafelenClause(Expr *Len, SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| // OpenMP [2.8.1, simd construct, Description] |
| // The parameter of the safelen clause must be a constant |
| // positive integer expression. |
| ExprResult Safelen = VerifyPositiveIntegerConstantInClause(Len, OMPC_safelen); |
| if (Safelen.isInvalid()) |
| return nullptr; |
| return new (Context) |
| OMPSafelenClause(Safelen.get(), StartLoc, LParenLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPCollapseClause(Expr *NumForLoops, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| // OpenMP [2.7.1, loop construct, Description] |
| // OpenMP [2.8.1, simd construct, Description] |
| // OpenMP [2.9.6, distribute construct, Description] |
| // The parameter of the collapse clause must be a constant |
| // positive integer expression. |
| ExprResult NumForLoopsResult = |
| VerifyPositiveIntegerConstantInClause(NumForLoops, OMPC_collapse); |
| if (NumForLoopsResult.isInvalid()) |
| return nullptr; |
| return new (Context) |
| OMPCollapseClause(NumForLoopsResult.get(), StartLoc, LParenLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSimpleClause( |
| OpenMPClauseKind Kind, unsigned Argument, SourceLocation ArgumentLoc, |
| SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation EndLoc) { |
| OMPClause *Res = nullptr; |
| switch (Kind) { |
| case OMPC_default: |
| Res = |
| ActOnOpenMPDefaultClause(static_cast<OpenMPDefaultClauseKind>(Argument), |
| ArgumentLoc, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_proc_bind: |
| Res = ActOnOpenMPProcBindClause( |
| static_cast<OpenMPProcBindClauseKind>(Argument), ArgumentLoc, StartLoc, |
| LParenLoc, EndLoc); |
| break; |
| case OMPC_if: |
| case OMPC_final: |
| case OMPC_num_threads: |
| case OMPC_safelen: |
| case OMPC_collapse: |
| case OMPC_schedule: |
| case OMPC_private: |
| case OMPC_firstprivate: |
| case OMPC_lastprivate: |
| case OMPC_shared: |
| case OMPC_reduction: |
| case OMPC_linear: |
| case OMPC_aligned: |
| case OMPC_copyin: |
| case OMPC_copyprivate: |
| case OMPC_ordered: |
| case OMPC_nowait: |
| case OMPC_untied: |
| case OMPC_mergeable: |
| case OMPC_threadprivate: |
| case OMPC_flush: |
| case OMPC_unknown: |
| llvm_unreachable("Clause is not allowed."); |
| } |
| return Res; |
| } |
| |
| OMPClause *Sema::ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind, |
| SourceLocation KindKwLoc, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| if (Kind == OMPC_DEFAULT_unknown) { |
| std::string Values; |
| static_assert(OMPC_DEFAULT_unknown > 0, |
| "OMPC_DEFAULT_unknown not greater than 0"); |
| std::string Sep(", "); |
| for (unsigned i = 0; i < OMPC_DEFAULT_unknown; ++i) { |
| Values += "'"; |
| Values += getOpenMPSimpleClauseTypeName(OMPC_default, i); |
| Values += "'"; |
| switch (i) { |
| case OMPC_DEFAULT_unknown - 2: |
| Values += " or "; |
| break; |
| case OMPC_DEFAULT_unknown - 1: |
| break; |
| default: |
| Values += Sep; |
| break; |
| } |
| } |
| Diag(KindKwLoc, diag::err_omp_unexpected_clause_value) |
| << Values << getOpenMPClauseName(OMPC_default); |
| return nullptr; |
| } |
| switch (Kind) { |
| case OMPC_DEFAULT_none: |
| DSAStack->setDefaultDSANone(KindKwLoc); |
| break; |
| case OMPC_DEFAULT_shared: |
| DSAStack->setDefaultDSAShared(KindKwLoc); |
| break; |
| case OMPC_DEFAULT_unknown: |
| llvm_unreachable("Clause kind is not allowed."); |
| break; |
| } |
| return new (Context) |
| OMPDefaultClause(Kind, KindKwLoc, StartLoc, LParenLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPProcBindClause(OpenMPProcBindClauseKind Kind, |
| SourceLocation KindKwLoc, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| if (Kind == OMPC_PROC_BIND_unknown) { |
| std::string Values; |
| std::string Sep(", "); |
| for (unsigned i = 0; i < OMPC_PROC_BIND_unknown; ++i) { |
| Values += "'"; |
| Values += getOpenMPSimpleClauseTypeName(OMPC_proc_bind, i); |
| Values += "'"; |
| switch (i) { |
| case OMPC_PROC_BIND_unknown - 2: |
| Values += " or "; |
| break; |
| case OMPC_PROC_BIND_unknown - 1: |
| break; |
| default: |
| Values += Sep; |
| break; |
| } |
| } |
| Diag(KindKwLoc, diag::err_omp_unexpected_clause_value) |
| << Values << getOpenMPClauseName(OMPC_proc_bind); |
| return nullptr; |
| } |
| return new (Context) |
| OMPProcBindClause(Kind, KindKwLoc, StartLoc, LParenLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSingleExprWithArgClause( |
| OpenMPClauseKind Kind, unsigned Argument, Expr *Expr, |
| SourceLocation StartLoc, SourceLocation LParenLoc, |
| SourceLocation ArgumentLoc, SourceLocation CommaLoc, |
| SourceLocation EndLoc) { |
| OMPClause *Res = nullptr; |
| switch (Kind) { |
| case OMPC_schedule: |
| Res = ActOnOpenMPScheduleClause( |
| static_cast<OpenMPScheduleClauseKind>(Argument), Expr, StartLoc, |
| LParenLoc, ArgumentLoc, CommaLoc, EndLoc); |
| break; |
| case OMPC_if: |
| case OMPC_final: |
| case OMPC_num_threads: |
| case OMPC_safelen: |
| case OMPC_collapse: |
| case OMPC_default: |
| case OMPC_proc_bind: |
| case OMPC_private: |
| case OMPC_firstprivate: |
| case OMPC_lastprivate: |
| case OMPC_shared: |
| case OMPC_reduction: |
| case OMPC_linear: |
| case OMPC_aligned: |
| case OMPC_copyin: |
| case OMPC_copyprivate: |
| case OMPC_ordered: |
| case OMPC_nowait: |
| case OMPC_untied: |
| case OMPC_mergeable: |
| case OMPC_threadprivate: |
| case OMPC_flush: |
| case OMPC_unknown: |
| llvm_unreachable("Clause is not allowed."); |
| } |
| return Res; |
| } |
| |
| OMPClause *Sema::ActOnOpenMPScheduleClause( |
| OpenMPScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc, |
| SourceLocation LParenLoc, SourceLocation KindLoc, SourceLocation CommaLoc, |
| SourceLocation EndLoc) { |
| if (Kind == OMPC_SCHEDULE_unknown) { |
| std::string Values; |
| std::string Sep(", "); |
| for (unsigned i = 0; i < OMPC_SCHEDULE_unknown; ++i) { |
| Values += "'"; |
| Values += getOpenMPSimpleClauseTypeName(OMPC_schedule, i); |
| Values += "'"; |
| switch (i) { |
| case OMPC_SCHEDULE_unknown - 2: |
| Values += " or "; |
| break; |
| case OMPC_SCHEDULE_unknown - 1: |
| break; |
| default: |
| Values += Sep; |
| break; |
| } |
| } |
| Diag(KindLoc, diag::err_omp_unexpected_clause_value) |
| << Values << getOpenMPClauseName(OMPC_schedule); |
| return nullptr; |
| } |
| Expr *ValExpr = ChunkSize; |
| if (ChunkSize) { |
| if (!ChunkSize->isValueDependent() && !ChunkSize->isTypeDependent() && |
| !ChunkSize->isInstantiationDependent() && |
| !ChunkSize->containsUnexpandedParameterPack()) { |
| SourceLocation ChunkSizeLoc = ChunkSize->getLocStart(); |
| ExprResult Val = |
| PerformOpenMPImplicitIntegerConversion(ChunkSizeLoc, ChunkSize); |
| if (Val.isInvalid()) |
| return nullptr; |
| |
| ValExpr = Val.get(); |
| |
| // OpenMP [2.7.1, Restrictions] |
| // chunk_size must be a loop invariant integer expression with a positive |
| // value. |
| llvm::APSInt Result; |
| if (ValExpr->isIntegerConstantExpr(Result, Context) && |
| Result.isSigned() && !Result.isStrictlyPositive()) { |
| Diag(ChunkSizeLoc, diag::err_omp_negative_expression_in_clause) |
| << "schedule" << ChunkSize->getSourceRange(); |
| return nullptr; |
| } |
| } |
| } |
| |
| return new (Context) OMPScheduleClause(StartLoc, LParenLoc, KindLoc, CommaLoc, |
| EndLoc, Kind, ValExpr); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPClause(OpenMPClauseKind Kind, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| OMPClause *Res = nullptr; |
| switch (Kind) { |
| case OMPC_ordered: |
| Res = ActOnOpenMPOrderedClause(StartLoc, EndLoc); |
| break; |
| case OMPC_nowait: |
| Res = ActOnOpenMPNowaitClause(StartLoc, EndLoc); |
| break; |
| case OMPC_untied: |
| Res = ActOnOpenMPUntiedClause(StartLoc, EndLoc); |
| break; |
| case OMPC_mergeable: |
| Res = ActOnOpenMPMergeableClause(StartLoc, EndLoc); |
| break; |
| case OMPC_if: |
| case OMPC_final: |
| case OMPC_num_threads: |
| case OMPC_safelen: |
| case OMPC_collapse: |
| case OMPC_schedule: |
| case OMPC_private: |
| case OMPC_firstprivate: |
| case OMPC_lastprivate: |
| case OMPC_shared: |
| case OMPC_reduction: |
| case OMPC_linear: |
| case OMPC_aligned: |
| case OMPC_copyin: |
| case OMPC_copyprivate: |
| case OMPC_default: |
| case OMPC_proc_bind: |
| case OMPC_threadprivate: |
| case OMPC_flush: |
| case OMPC_unknown: |
| llvm_unreachable("Clause is not allowed."); |
| } |
| return Res; |
| } |
| |
| OMPClause *Sema::ActOnOpenMPOrderedClause(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return new (Context) OMPOrderedClause(StartLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPNowaitClause(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return new (Context) OMPNowaitClause(StartLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPUntiedClause(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return new (Context) OMPUntiedClause(StartLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPMergeableClause(SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| return new (Context) OMPMergeableClause(StartLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPVarListClause( |
| OpenMPClauseKind Kind, ArrayRef<Expr *> VarList, Expr *TailExpr, |
| SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation ColonLoc, |
| SourceLocation EndLoc, CXXScopeSpec &ReductionIdScopeSpec, |
| const DeclarationNameInfo &ReductionId) { |
| OMPClause *Res = nullptr; |
| switch (Kind) { |
| case OMPC_private: |
| Res = ActOnOpenMPPrivateClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_firstprivate: |
| Res = ActOnOpenMPFirstprivateClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_lastprivate: |
| Res = ActOnOpenMPLastprivateClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_shared: |
| Res = ActOnOpenMPSharedClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_reduction: |
| Res = ActOnOpenMPReductionClause(VarList, StartLoc, LParenLoc, ColonLoc, |
| EndLoc, ReductionIdScopeSpec, ReductionId); |
| break; |
| case OMPC_linear: |
| Res = ActOnOpenMPLinearClause(VarList, TailExpr, StartLoc, LParenLoc, |
| ColonLoc, EndLoc); |
| break; |
| case OMPC_aligned: |
| Res = ActOnOpenMPAlignedClause(VarList, TailExpr, StartLoc, LParenLoc, |
| ColonLoc, EndLoc); |
| break; |
| case OMPC_copyin: |
| Res = ActOnOpenMPCopyinClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_copyprivate: |
| Res = ActOnOpenMPCopyprivateClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_flush: |
| Res = ActOnOpenMPFlushClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_if: |
| case OMPC_final: |
| case OMPC_num_threads: |
| case OMPC_safelen: |
| case OMPC_collapse: |
| case OMPC_default: |
| case OMPC_proc_bind: |
| case OMPC_schedule: |
| case OMPC_ordered: |
| case OMPC_nowait: |
| case OMPC_untied: |
| case OMPC_mergeable: |
| case OMPC_threadprivate: |
| case OMPC_unknown: |
| llvm_unreachable("Clause is not allowed."); |
| } |
| return Res; |
| } |
| |
| OMPClause *Sema::ActOnOpenMPPrivateClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP private clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.9.3.3, Restrictions, p.1] |
| // A variable that is part of another variable (as an array or |
| // structure element) cannot appear in a private clause. |
| DeclRefExpr *DE = dyn_cast_or_null<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| Decl *D = DE->getDecl(); |
| VarDecl *VD = cast<VarDecl>(D); |
| |
| QualType Type = VD->getType(); |
| if (Type->isDependentType() || Type->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // OpenMP [2.9.3.3, Restrictions, C/C++, p.3] |
| // A variable that appears in a private clause must not have an incomplete |
| // type or a reference type. |
| if (RequireCompleteType(ELoc, Type, |
| diag::err_omp_private_incomplete_type)) { |
| continue; |
| } |
| if (Type->isReferenceType()) { |
| Diag(ELoc, diag::err_omp_clause_ref_type_arg) |
| << getOpenMPClauseName(OMPC_private) << Type; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // OpenMP [2.9.3.3, Restrictions, C/C++, p.1] |
| // A variable of class type (or array thereof) that appears in a private |
| // clause requires an accessible, unambiguous default constructor for the |
| // class type. |
| while (Type.getNonReferenceType()->isArrayType()) { |
| Type = cast<ArrayType>(Type.getNonReferenceType().getTypePtr()) |
| ->getElementType(); |
| } |
| CXXRecordDecl *RD = getLangOpts().CPlusPlus |
| ? Type.getNonReferenceType()->getAsCXXRecordDecl() |
| : nullptr; |
| // FIXME This code must be replaced by actual constructing/destructing of |
| // the private variable. |
| if (RD) { |
| CXXConstructorDecl *CD = LookupDefaultConstructor(RD); |
| PartialDiagnostic PD = |
| PartialDiagnostic(PartialDiagnostic::NullDiagnostic()); |
| if (!CD || |
| CheckConstructorAccess(ELoc, CD, |
| InitializedEntity::InitializeTemporary(Type), |
| CD->getAccess(), PD) == AR_inaccessible || |
| CD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_private) << 0; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, CD); |
| DiagnoseUseOfDecl(CD, ELoc); |
| |
| CXXDestructorDecl *DD = RD->getDestructor(); |
| if (DD) { |
| if (CheckDestructorAccess(ELoc, DD, PD) == AR_inaccessible || |
| DD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_private) << 4; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, DD); |
| DiagnoseUseOfDecl(DD, ELoc); |
| } |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct] |
| // Variables with the predetermined data-sharing attributes may not be |
| // listed in data-sharing attributes clauses, except for the cases |
| // listed below. For these exceptions only, listing a predetermined |
| // variable in a data-sharing attribute clause is allowed and overrides |
| // the variable's predetermined data-sharing attributes. |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_private) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_private); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_private); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPPrivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPFirstprivateClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| bool IsImplicitClause = |
| StartLoc.isInvalid() && LParenLoc.isInvalid() && EndLoc.isInvalid(); |
| auto ImplicitClauseLoc = DSAStack->getConstructLoc(); |
| |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP firstprivate clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = IsImplicitClause ? ImplicitClauseLoc |
| : RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.9.3.3, Restrictions, p.1] |
| // A variable that is part of another variable (as an array or |
| // structure element) cannot appear in a private clause. |
| DeclRefExpr *DE = dyn_cast_or_null<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| Decl *D = DE->getDecl(); |
| VarDecl *VD = cast<VarDecl>(D); |
| |
| QualType Type = VD->getType(); |
| if (Type->isDependentType() || Type->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // OpenMP [2.9.3.3, Restrictions, C/C++, p.3] |
| // A variable that appears in a private clause must not have an incomplete |
| // type or a reference type. |
| if (RequireCompleteType(ELoc, Type, |
| diag::err_omp_firstprivate_incomplete_type)) { |
| continue; |
| } |
| if (Type->isReferenceType()) { |
| if (IsImplicitClause) { |
| Diag(ImplicitClauseLoc, |
| diag::err_omp_task_predetermined_firstprivate_ref_type_arg) |
| << Type; |
| Diag(RefExpr->getExprLoc(), diag::note_used_here); |
| } else { |
| Diag(ELoc, diag::err_omp_clause_ref_type_arg) |
| << getOpenMPClauseName(OMPC_firstprivate) << Type; |
| } |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // OpenMP [2.9.3.4, Restrictions, C/C++, p.1] |
| // A variable of class type (or array thereof) that appears in a private |
| // clause requires an accessible, unambiguous copy constructor for the |
| // class type. |
| Type = Context.getBaseElementType(Type); |
| CXXRecordDecl *RD = getLangOpts().CPlusPlus |
| ? Type.getNonReferenceType()->getAsCXXRecordDecl() |
| : nullptr; |
| // FIXME This code must be replaced by actual constructing/destructing of |
| // the firstprivate variable. |
| if (RD) { |
| CXXConstructorDecl *CD = LookupCopyingConstructor(RD, 0); |
| PartialDiagnostic PD = |
| PartialDiagnostic(PartialDiagnostic::NullDiagnostic()); |
| if (!CD || |
| CheckConstructorAccess(ELoc, CD, |
| InitializedEntity::InitializeTemporary(Type), |
| CD->getAccess(), PD) == AR_inaccessible || |
| CD->isDeleted()) { |
| if (IsImplicitClause) { |
| Diag(ImplicitClauseLoc, |
| diag::err_omp_task_predetermined_firstprivate_required_method) |
| << 0; |
| Diag(RefExpr->getExprLoc(), diag::note_used_here); |
| } else { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_firstprivate) << 1; |
| } |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, CD); |
| DiagnoseUseOfDecl(CD, ELoc); |
| |
| CXXDestructorDecl *DD = RD->getDestructor(); |
| if (DD) { |
| if (CheckDestructorAccess(ELoc, DD, PD) == AR_inaccessible || |
| DD->isDeleted()) { |
| if (IsImplicitClause) { |
| Diag(ImplicitClauseLoc, |
| diag::err_omp_task_predetermined_firstprivate_required_method) |
| << 1; |
| Diag(RefExpr->getExprLoc(), diag::note_used_here); |
| } else { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_firstprivate) << 4; |
| } |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, DD); |
| DiagnoseUseOfDecl(DD, ELoc); |
| } |
| } |
| |
| // If an implicit firstprivate variable found it was checked already. |
| if (!IsImplicitClause) { |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD, false); |
| Type = Type.getNonReferenceType().getCanonicalType(); |
| bool IsConstant = Type.isConstant(Context); |
| Type = Context.getBaseElementType(Type); |
| // OpenMP [2.4.13, Data-sharing Attribute Clauses] |
| // A list item that specifies a given variable may not appear in more |
| // than one clause on the same directive, except that a variable may be |
| // specified in both firstprivate and lastprivate clauses. |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_firstprivate && |
| DVar.CKind != OMPC_lastprivate && DVar.RefExpr) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_firstprivate); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct] |
| // Variables with the predetermined data-sharing attributes may not be |
| // listed in data-sharing attributes clauses, except for the cases |
| // listed below. For these exceptions only, listing a predetermined |
| // variable in a data-sharing attribute clause is allowed and overrides |
| // the variable's predetermined data-sharing attributes. |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct, C/C++, p.2] |
| // Variables with const-qualified type having no mutable member may be |
| // listed in a firstprivate clause, even if they are static data members. |
| if (!(IsConstant || VD->isStaticDataMember()) && !DVar.RefExpr && |
| DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_shared) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_firstprivate); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| OpenMPDirectiveKind CurrDir = DSAStack->getCurrentDirective(); |
| // OpenMP [2.9.3.4, Restrictions, p.2] |
| // A list item that is private within a parallel region must not appear |
| // in a firstprivate clause on a worksharing construct if any of the |
| // worksharing regions arising from the worksharing construct ever bind |
| // to any of the parallel regions arising from the parallel construct. |
| if (isOpenMPWorksharingDirective(CurrDir) && |
| !isOpenMPParallelDirective(CurrDir)) { |
| DVar = DSAStack->getImplicitDSA(VD, true); |
| if (DVar.CKind != OMPC_shared && |
| (isOpenMPParallelDirective(DVar.DKind) || |
| DVar.DKind == OMPD_unknown)) { |
| Diag(ELoc, diag::err_omp_required_access) |
| << getOpenMPClauseName(OMPC_firstprivate) |
| << getOpenMPClauseName(OMPC_shared); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| } |
| // OpenMP [2.9.3.4, Restrictions, p.3] |
| // A list item that appears in a reduction clause of a parallel construct |
| // must not appear in a firstprivate clause on a worksharing or task |
| // construct if any of the worksharing or task regions arising from the |
| // worksharing or task construct ever bind to any of the parallel regions |
| // arising from the parallel construct. |
| // OpenMP [2.9.3.4, Restrictions, p.4] |
| // A list item that appears in a reduction clause in worksharing |
| // construct must not appear in a firstprivate clause in a task construct |
| // encountered during execution of any of the worksharing regions arising |
| // from the worksharing construct. |
| if (CurrDir == OMPD_task) { |
| DVar = |
| DSAStack->hasInnermostDSA(VD, MatchesAnyClause(OMPC_reduction), |
| [](OpenMPDirectiveKind K) -> bool { |
| return isOpenMPParallelDirective(K) || |
| isOpenMPWorksharingDirective(K); |
| }, |
| false); |
| if (DVar.CKind == OMPC_reduction && |
| (isOpenMPParallelDirective(DVar.DKind) || |
| isOpenMPWorksharingDirective(DVar.DKind))) { |
| Diag(ELoc, diag::err_omp_parallel_reduction_in_task_firstprivate) |
| << getOpenMPDirectiveName(DVar.DKind); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| } |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_firstprivate); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPFirstprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, |
| Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPLastprivateClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP lastprivate clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.14.3.5, Restrictions, p.1] |
| // A variable that is part of another variable (as an array or structure |
| // element) cannot appear in a lastprivate clause. |
| DeclRefExpr *DE = dyn_cast_or_null<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| Decl *D = DE->getDecl(); |
| VarDecl *VD = cast<VarDecl>(D); |
| |
| QualType Type = VD->getType(); |
| if (Type->isDependentType() || Type->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // OpenMP [2.14.3.5, Restrictions, C/C++, p.2] |
| // A variable that appears in a lastprivate clause must not have an |
| // incomplete type or a reference type. |
| if (RequireCompleteType(ELoc, Type, |
| diag::err_omp_lastprivate_incomplete_type)) { |
| continue; |
| } |
| if (Type->isReferenceType()) { |
| Diag(ELoc, diag::err_omp_clause_ref_type_arg) |
| << getOpenMPClauseName(OMPC_lastprivate) << Type; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // OpenMP [2.14.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct] |
| // Variables with the predetermined data-sharing attributes may not be |
| // listed in data-sharing attributes clauses, except for the cases |
| // listed below. |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_lastprivate && |
| DVar.CKind != OMPC_firstprivate && |
| (DVar.CKind != OMPC_private || DVar.RefExpr != nullptr)) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_lastprivate); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| OpenMPDirectiveKind CurrDir = DSAStack->getCurrentDirective(); |
| // OpenMP [2.14.3.5, Restrictions, p.2] |
| // A list item that is private within a parallel region, or that appears in |
| // the reduction clause of a parallel construct, must not appear in a |
| // lastprivate clause on a worksharing construct if any of the corresponding |
| // worksharing regions ever binds to any of the corresponding parallel |
| // regions. |
| if (isOpenMPWorksharingDirective(CurrDir) && |
| !isOpenMPParallelDirective(CurrDir)) { |
| DVar = DSAStack->getImplicitDSA(VD, true); |
| if (DVar.CKind != OMPC_shared) { |
| Diag(ELoc, diag::err_omp_required_access) |
| << getOpenMPClauseName(OMPC_lastprivate) |
| << getOpenMPClauseName(OMPC_shared); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| } |
| // OpenMP [2.14.3.5, Restrictions, C++, p.1,2] |
| // A variable of class type (or array thereof) that appears in a |
| // lastprivate clause requires an accessible, unambiguous default |
| // constructor for the class type, unless the list item is also specified |
| // in a firstprivate clause. |
| // A variable of class type (or array thereof) that appears in a |
| // lastprivate clause requires an accessible, unambiguous copy assignment |
| // operator for the class type. |
| while (Type.getNonReferenceType()->isArrayType()) |
| Type = cast<ArrayType>(Type.getNonReferenceType().getTypePtr()) |
| ->getElementType(); |
| CXXRecordDecl *RD = getLangOpts().CPlusPlus |
| ? Type.getNonReferenceType()->getAsCXXRecordDecl() |
| : nullptr; |
| // FIXME This code must be replaced by actual copying and destructing of the |
| // lastprivate variable. |
| if (RD) { |
| CXXMethodDecl *MD = LookupCopyingAssignment(RD, 0, false, 0); |
| DeclAccessPair FoundDecl = DeclAccessPair::make(MD, MD->getAccess()); |
| if (MD) { |
| if (CheckMemberAccess(ELoc, RD, FoundDecl) == AR_inaccessible || |
| MD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_lastprivate) << 2; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, MD); |
| DiagnoseUseOfDecl(MD, ELoc); |
| } |
| |
| CXXDestructorDecl *DD = RD->getDestructor(); |
| if (DD) { |
| PartialDiagnostic PD = |
| PartialDiagnostic(PartialDiagnostic::NullDiagnostic()); |
| if (CheckDestructorAccess(ELoc, DD, PD) == AR_inaccessible || |
| DD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_lastprivate) << 4; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, DD); |
| DiagnoseUseOfDecl(DD, ELoc); |
| } |
| } |
| |
| if (DVar.CKind != OMPC_firstprivate) |
| DSAStack->addDSA(VD, DE, OMPC_lastprivate); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPLastprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, |
| Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSharedClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP shared clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.14.3.2, Restrictions, p.1] |
| // A variable that is part of another variable (as an array or structure |
| // element) cannot appear in a shared unless it is a static data member |
| // of a C++ class. |
| DeclRefExpr *DE = dyn_cast<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| Decl *D = DE->getDecl(); |
| VarDecl *VD = cast<VarDecl>(D); |
| |
| QualType Type = VD->getType(); |
| if (Type->isDependentType() || Type->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // OpenMP [2.9.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct] |
| // Variables with the predetermined data-sharing attributes may not be |
| // listed in data-sharing attributes clauses, except for the cases |
| // listed below. For these exceptions only, listing a predetermined |
| // variable in a data-sharing attribute clause is allowed and overrides |
| // the variable's predetermined data-sharing attributes. |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_shared && |
| DVar.RefExpr) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_shared); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_shared); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPSharedClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| namespace { |
| class DSARefChecker : public StmtVisitor<DSARefChecker, bool> { |
| DSAStackTy *Stack; |
| |
| public: |
| bool VisitDeclRefExpr(DeclRefExpr *E) { |
| if (VarDecl *VD = dyn_cast<VarDecl>(E->getDecl())) { |
| DSAStackTy::DSAVarData DVar = Stack->getTopDSA(VD, false); |
| if (DVar.CKind == OMPC_shared && !DVar.RefExpr) |
| return false; |
| if (DVar.CKind != OMPC_unknown) |
| return true; |
| DSAStackTy::DSAVarData DVarPrivate = |
| Stack->hasDSA(VD, isOpenMPPrivate, MatchesAlways(), false); |
| if (DVarPrivate.CKind != OMPC_unknown) |
| return true; |
| return false; |
| } |
| return false; |
| } |
| bool VisitStmt(Stmt *S) { |
| for (auto Child : S->children()) { |
| if (Child && Visit(Child)) |
| return true; |
| } |
| return false; |
| } |
| explicit DSARefChecker(DSAStackTy *S) : Stack(S) {} |
| }; |
| } // namespace |
| |
| OMPClause *Sema::ActOnOpenMPReductionClause( |
| ArrayRef<Expr *> VarList, SourceLocation StartLoc, SourceLocation LParenLoc, |
| SourceLocation ColonLoc, SourceLocation EndLoc, |
| CXXScopeSpec &ReductionIdScopeSpec, |
| const DeclarationNameInfo &ReductionId) { |
| // TODO: Allow scope specification search when 'declare reduction' is |
| // supported. |
| assert(ReductionIdScopeSpec.isEmpty() && |
| "No support for scoped reduction identifiers yet."); |
| |
| auto DN = ReductionId.getName(); |
| auto OOK = DN.getCXXOverloadedOperator(); |
| BinaryOperatorKind BOK = BO_Comma; |
| |
| // OpenMP [2.14.3.6, reduction clause] |
| // C |
| // reduction-identifier is either an identifier or one of the following |
| // operators: +, -, *, &, |, ^, && and || |
| // C++ |
| // reduction-identifier is either an id-expression or one of the following |
| // operators: +, -, *, &, |, ^, && and || |
| // FIXME: Only 'min' and 'max' identifiers are supported for now. |
| switch (OOK) { |
| case OO_Plus: |
| case OO_Minus: |
| BOK = BO_AddAssign; |
| break; |
| case OO_Star: |
| BOK = BO_MulAssign; |
| break; |
| case OO_Amp: |
| BOK = BO_AndAssign; |
| break; |
| case OO_Pipe: |
| BOK = BO_OrAssign; |
| break; |
| case OO_Caret: |
| BOK = BO_XorAssign; |
| break; |
| case OO_AmpAmp: |
| BOK = BO_LAnd; |
| break; |
| case OO_PipePipe: |
| BOK = BO_LOr; |
| break; |
| default: |
| if (auto II = DN.getAsIdentifierInfo()) { |
| if (II->isStr("max")) |
| BOK = BO_GT; |
| else if (II->isStr("min")) |
| BOK = BO_LT; |
| } |
| break; |
| } |
| SourceRange ReductionIdRange; |
| if (ReductionIdScopeSpec.isValid()) { |
| ReductionIdRange.setBegin(ReductionIdScopeSpec.getBeginLoc()); |
| } |
| ReductionIdRange.setEnd(ReductionId.getEndLoc()); |
| if (BOK == BO_Comma) { |
| // Not allowed reduction identifier is found. |
| Diag(ReductionId.getLocStart(), diag::err_omp_unknown_reduction_identifier) |
| << ReductionIdRange; |
| return nullptr; |
| } |
| |
| SmallVector<Expr *, 8> Vars; |
| for (auto RefExpr : VarList) { |
| assert(RefExpr && "nullptr expr in OpenMP reduction clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| if (RefExpr->isTypeDependent() || RefExpr->isValueDependent() || |
| RefExpr->isInstantiationDependent() || |
| RefExpr->containsUnexpandedParameterPack()) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| auto ELoc = RefExpr->getExprLoc(); |
| auto ERange = RefExpr->getSourceRange(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable or array section, subject to the restrictions |
| // specified in Section 2.4 on page 42 and in each of the sections |
| // describing clauses and directives for which a list appears. |
| // OpenMP [2.14.3.3, Restrictions, p.1] |
| // A variable that is part of another variable (as an array or |
| // structure element) cannot appear in a private clause. |
| auto DE = dyn_cast<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << ERange; |
| continue; |
| } |
| auto D = DE->getDecl(); |
| auto VD = cast<VarDecl>(D); |
| auto Type = VD->getType(); |
| // OpenMP [2.9.3.3, Restrictions, C/C++, p.3] |
| // A variable that appears in a private clause must not have an incomplete |
| // type or a reference type. |
| if (RequireCompleteType(ELoc, Type, |
| diag::err_omp_reduction_incomplete_type)) |
| continue; |
| // OpenMP [2.14.3.6, reduction clause, Restrictions] |
| // Arrays may not appear in a reduction clause. |
| if (Type.getNonReferenceType()->isArrayType()) { |
| Diag(ELoc, diag::err_omp_reduction_type_array) << Type << ERange; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| // OpenMP [2.14.3.6, reduction clause, Restrictions] |
| // A list item that appears in a reduction clause must not be |
| // const-qualified. |
| if (Type.getNonReferenceType().isConstant(Context)) { |
| Diag(ELoc, diag::err_omp_const_variable) |
| << getOpenMPClauseName(OMPC_reduction) << Type << ERange; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| // OpenMP [2.9.3.6, Restrictions, C/C++, p.4] |
| // If a list-item is a reference type then it must bind to the same object |
| // for all threads of the team. |
| VarDecl *VDDef = VD->getDefinition(); |
| if (Type->isReferenceType() && VDDef) { |
| DSARefChecker Check(DSAStack); |
| if (Check.Visit(VDDef->getInit())) { |
| Diag(ELoc, diag::err_omp_reduction_ref_type_arg) << ERange; |
| Diag(VDDef->getLocation(), diag::note_defined_here) << VDDef; |
| continue; |
| } |
| } |
| // OpenMP [2.14.3.6, reduction clause, Restrictions] |
| // The type of a list item that appears in a reduction clause must be valid |
| // for the reduction-identifier. For a max or min reduction in C, the type |
| // of the list item must be an allowed arithmetic data type: char, int, |
| // float, double, or _Bool, possibly modified with long, short, signed, or |
| // unsigned. For a max or min reduction in C++, the type of the list item |
| // must be an allowed arithmetic data type: char, wchar_t, int, float, |
| // double, or bool, possibly modified with long, short, signed, or unsigned. |
| if ((BOK == BO_GT || BOK == BO_LT) && |
| !(Type->isScalarType() || |
| (getLangOpts().CPlusPlus && Type->isArithmeticType()))) { |
| Diag(ELoc, diag::err_omp_clause_not_arithmetic_type_arg) |
| << getLangOpts().CPlusPlus; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| if ((BOK == BO_OrAssign || BOK == BO_AndAssign || BOK == BO_XorAssign) && |
| !getLangOpts().CPlusPlus && Type->isFloatingType()) { |
| Diag(ELoc, diag::err_omp_clause_floating_type_arg); |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| bool Suppress = getDiagnostics().getSuppressAllDiagnostics(); |
| getDiagnostics().setSuppressAllDiagnostics(true); |
| ExprResult ReductionOp = |
| BuildBinOp(DSAStack->getCurScope(), ReductionId.getLocStart(), BOK, |
| RefExpr, RefExpr); |
| getDiagnostics().setSuppressAllDiagnostics(Suppress); |
| if (ReductionOp.isInvalid()) { |
| Diag(ELoc, diag::err_omp_reduction_id_not_compatible) << Type |
| << ReductionIdRange; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // OpenMP [2.14.1.1, Data-sharing Attribute Rules for Variables Referenced |
| // in a Construct] |
| // Variables with the predetermined data-sharing attributes may not be |
| // listed in data-sharing attributes clauses, except for the cases |
| // listed below. For these exceptions only, listing a predetermined |
| // variable in a data-sharing attribute clause is allowed and overrides |
| // the variable's predetermined data-sharing attributes. |
| // OpenMP [2.14.3.6, Restrictions, p.3] |
| // Any number of reduction clauses can be specified on the directive, |
| // but a list item can appear only once in the reduction clauses for that |
| // directive. |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.CKind == OMPC_reduction) { |
| Diag(ELoc, diag::err_omp_once_referenced) |
| << getOpenMPClauseName(OMPC_reduction); |
| if (DVar.RefExpr) { |
| Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_referenced); |
| } |
| } else if (DVar.CKind != OMPC_unknown) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_reduction); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| // OpenMP [2.14.3.6, Restrictions, p.1] |
| // A list item that appears in a reduction clause of a worksharing |
| // construct must be shared in the parallel regions to which any of the |
| // worksharing regions arising from the worksharing construct bind. |
| OpenMPDirectiveKind CurrDir = DSAStack->getCurrentDirective(); |
| if (isOpenMPWorksharingDirective(CurrDir) && |
| !isOpenMPParallelDirective(CurrDir)) { |
| DVar = DSAStack->getImplicitDSA(VD, true); |
| if (DVar.CKind != OMPC_shared) { |
| Diag(ELoc, diag::err_omp_required_access) |
| << getOpenMPClauseName(OMPC_reduction) |
| << getOpenMPClauseName(OMPC_shared); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| } |
| |
| CXXRecordDecl *RD = getLangOpts().CPlusPlus |
| ? Type.getNonReferenceType()->getAsCXXRecordDecl() |
| : nullptr; |
| // FIXME This code must be replaced by actual constructing/destructing of |
| // the reduction variable. |
| if (RD) { |
| CXXConstructorDecl *CD = LookupDefaultConstructor(RD); |
| PartialDiagnostic PD = |
| PartialDiagnostic(PartialDiagnostic::NullDiagnostic()); |
| if (!CD || |
| CheckConstructorAccess(ELoc, CD, |
| InitializedEntity::InitializeTemporary(Type), |
| CD->getAccess(), PD) == AR_inaccessible || |
| CD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_reduction) << 0; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, CD); |
| DiagnoseUseOfDecl(CD, ELoc); |
| |
| CXXDestructorDecl *DD = RD->getDestructor(); |
| if (DD) { |
| if (CheckDestructorAccess(ELoc, DD, PD) == AR_inaccessible || |
| DD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_reduction) << 4; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, DD); |
| DiagnoseUseOfDecl(DD, ELoc); |
| } |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_reduction); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPReductionClause::Create( |
| Context, StartLoc, LParenLoc, ColonLoc, EndLoc, Vars, |
| ReductionIdScopeSpec.getWithLocInContext(Context), ReductionId); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPLinearClause(ArrayRef<Expr *> VarList, Expr *Step, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation ColonLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP linear clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| // OpenMP [2.14.3.7, linear clause] |
| // A list item that appears in a linear clause is subject to the private |
| // clause semantics described in Section 2.14.3.3 on page 159 except as |
| // noted. In addition, the value of the new list item on each iteration |
| // of the associated loop(s) corresponds to the value of the original |
| // list item before entering the construct plus the logical number of |
| // the iteration times linear-step. |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.14.3.3, Restrictions, p.1] |
| // A variable that is part of another variable (as an array or |
| // structure element) cannot appear in a private clause. |
| DeclRefExpr *DE = dyn_cast<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| |
| VarDecl *VD = cast<VarDecl>(DE->getDecl()); |
| |
| // OpenMP [2.14.3.7, linear clause] |
| // A list-item cannot appear in more than one linear clause. |
| // A list-item that appears in a linear clause cannot appear in any |
| // other data-sharing attribute clause. |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.RefExpr) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_linear); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| QualType QType = VD->getType(); |
| if (QType->isDependentType() || QType->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // A variable must not have an incomplete type or a reference type. |
| if (RequireCompleteType(ELoc, QType, |
| diag::err_omp_linear_incomplete_type)) { |
| continue; |
| } |
| if (QType->isReferenceType()) { |
| Diag(ELoc, diag::err_omp_clause_ref_type_arg) |
| << getOpenMPClauseName(OMPC_linear) << QType; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // A list item must not be const-qualified. |
| if (QType.isConstant(Context)) { |
| Diag(ELoc, diag::err_omp_const_variable) |
| << getOpenMPClauseName(OMPC_linear); |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // A list item must be of integral or pointer type. |
| QType = QType.getUnqualifiedType().getCanonicalType(); |
| const Type *Ty = QType.getTypePtrOrNull(); |
| if (!Ty || (!Ty->isDependentType() && !Ty->isIntegralType(Context) && |
| !Ty->isPointerType())) { |
| Diag(ELoc, diag::err_omp_linear_expected_int_or_ptr) << QType; |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_linear); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| Expr *StepExpr = Step; |
| if (Step && !Step->isValueDependent() && !Step->isTypeDependent() && |
| !Step->isInstantiationDependent() && |
| !Step->containsUnexpandedParameterPack()) { |
| SourceLocation StepLoc = Step->getLocStart(); |
| ExprResult Val = PerformOpenMPImplicitIntegerConversion(StepLoc, Step); |
| if (Val.isInvalid()) |
| return nullptr; |
| StepExpr = Val.get(); |
| |
| // Warn about zero linear step (it would be probably better specified as |
| // making corresponding variables 'const'). |
| llvm::APSInt Result; |
| if (StepExpr->isIntegerConstantExpr(Result, Context) && |
| !Result.isNegative() && !Result.isStrictlyPositive()) |
| Diag(StepLoc, diag::warn_omp_linear_step_zero) << Vars[0] |
| << (Vars.size() > 1); |
| } |
| |
| return OMPLinearClause::Create(Context, StartLoc, LParenLoc, ColonLoc, EndLoc, |
| Vars, StepExpr); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPAlignedClause( |
| ArrayRef<Expr *> VarList, Expr *Alignment, SourceLocation StartLoc, |
| SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc) { |
| |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP aligned clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| DeclRefExpr *DE = dyn_cast<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| |
| VarDecl *VD = cast<VarDecl>(DE->getDecl()); |
| |
| // OpenMP [2.8.1, simd construct, Restrictions] |
| // The type of list items appearing in the aligned clause must be |
| // array, pointer, reference to array, or reference to pointer. |
| QualType QType = DE->getType() |
| .getNonReferenceType() |
| .getUnqualifiedType() |
| .getCanonicalType(); |
| const Type *Ty = QType.getTypePtrOrNull(); |
| if (!Ty || (!Ty->isDependentType() && !Ty->isArrayType() && |
| !Ty->isPointerType())) { |
| Diag(ELoc, diag::err_omp_aligned_expected_array_or_ptr) |
| << QType << getLangOpts().CPlusPlus << RefExpr->getSourceRange(); |
| bool IsDecl = |
| VD->isThisDeclarationADefinition(Context) == VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| continue; |
| } |
| |
| // OpenMP [2.8.1, simd construct, Restrictions] |
| // A list-item cannot appear in more than one aligned clause. |
| if (DeclRefExpr *PrevRef = DSAStack->addUniqueAligned(VD, DE)) { |
| Diag(ELoc, diag::err_omp_aligned_twice) << RefExpr->getSourceRange(); |
| Diag(PrevRef->getExprLoc(), diag::note_omp_explicit_dsa) |
| << getOpenMPClauseName(OMPC_aligned); |
| continue; |
| } |
| |
| Vars.push_back(DE); |
| } |
| |
| // OpenMP [2.8.1, simd construct, Description] |
| // The parameter of the aligned clause, alignment, must be a constant |
| // positive integer expression. |
| // If no optional parameter is specified, implementation-defined default |
| // alignments for SIMD instructions on the target platforms are assumed. |
| if (Alignment != nullptr) { |
| ExprResult AlignResult = |
| VerifyPositiveIntegerConstantInClause(Alignment, OMPC_aligned); |
| if (AlignResult.isInvalid()) |
| return nullptr; |
| Alignment = AlignResult.get(); |
| } |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPAlignedClause::Create(Context, StartLoc, LParenLoc, ColonLoc, |
| EndLoc, Vars, Alignment); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPCopyinClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP copyin clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.14.4.1, Restrictions, p.1] |
| // A list item that appears in a copyin clause must be threadprivate. |
| DeclRefExpr *DE = dyn_cast<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| |
| Decl *D = DE->getDecl(); |
| VarDecl *VD = cast<VarDecl>(D); |
| |
| QualType Type = VD->getType(); |
| if (Type->isDependentType() || Type->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // OpenMP [2.14.4.1, Restrictions, C/C++, p.1] |
| // A list item that appears in a copyin clause must be threadprivate. |
| if (!DSAStack->isThreadPrivate(VD)) { |
| Diag(ELoc, diag::err_omp_required_access) |
| << getOpenMPClauseName(OMPC_copyin) |
| << getOpenMPDirectiveName(OMPD_threadprivate); |
| continue; |
| } |
| |
| // OpenMP [2.14.4.1, Restrictions, C/C++, p.2] |
| // A variable of class type (or array thereof) that appears in a |
| // copyin clause requires an accessible, unambiguous copy assignment |
| // operator for the class type. |
| Type = Context.getBaseElementType(Type); |
| CXXRecordDecl *RD = |
| getLangOpts().CPlusPlus ? Type->getAsCXXRecordDecl() : nullptr; |
| // FIXME This code must be replaced by actual assignment of the |
| // threadprivate variable. |
| if (RD) { |
| CXXMethodDecl *MD = LookupCopyingAssignment(RD, 0, false, 0); |
| DeclAccessPair FoundDecl = DeclAccessPair::make(MD, MD->getAccess()); |
| if (MD) { |
| if (CheckMemberAccess(ELoc, RD, FoundDecl) == AR_inaccessible || |
| MD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_copyin) << 2; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, MD); |
| DiagnoseUseOfDecl(MD, ELoc); |
| } |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_copyin); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPCopyinClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPCopyprivateClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (auto &RefExpr : VarList) { |
| assert(RefExpr && "NULL expr in OpenMP copyprivate clause."); |
| if (isa<DependentScopeDeclRefExpr>(RefExpr)) { |
| // It will be analyzed later. |
| Vars.push_back(RefExpr); |
| continue; |
| } |
| |
| SourceLocation ELoc = RefExpr->getExprLoc(); |
| // OpenMP [2.1, C/C++] |
| // A list item is a variable name. |
| // OpenMP [2.14.4.1, Restrictions, p.1] |
| // A list item that appears in a copyin clause must be threadprivate. |
| DeclRefExpr *DE = dyn_cast<DeclRefExpr>(RefExpr); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << RefExpr->getSourceRange(); |
| continue; |
| } |
| |
| Decl *D = DE->getDecl(); |
| VarDecl *VD = cast<VarDecl>(D); |
| |
| QualType Type = VD->getType(); |
| if (Type->isDependentType() || Type->isInstantiationDependentType()) { |
| // It will be analyzed later. |
| Vars.push_back(DE); |
| continue; |
| } |
| |
| // OpenMP [2.14.4.2, Restrictions, p.2] |
| // A list item that appears in a copyprivate clause may not appear in a |
| // private or firstprivate clause on the single construct. |
| if (!DSAStack->isThreadPrivate(VD)) { |
| auto DVar = DSAStack->getTopDSA(VD, false); |
| if (DVar.CKind != OMPC_copyprivate && DVar.CKind != OMPC_unknown && |
| !(DVar.CKind == OMPC_private && !DVar.RefExpr)) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_copyprivate); |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| |
| // OpenMP [2.11.4.2, Restrictions, p.1] |
| // All list items that appear in a copyprivate clause must be either |
| // threadprivate or private in the enclosing context. |
| if (DVar.CKind == OMPC_unknown) { |
| DVar = DSAStack->getImplicitDSA(VD, false); |
| if (DVar.CKind == OMPC_shared) { |
| Diag(ELoc, diag::err_omp_required_access) |
| << getOpenMPClauseName(OMPC_copyprivate) |
| << "threadprivate or private in the enclosing context"; |
| ReportOriginalDSA(*this, DSAStack, VD, DVar); |
| continue; |
| } |
| } |
| } |
| |
| // OpenMP [2.14.4.1, Restrictions, C/C++, p.2] |
| // A variable of class type (or array thereof) that appears in a |
| // copyin clause requires an accessible, unambiguous copy assignment |
| // operator for the class type. |
| Type = Context.getBaseElementType(Type); |
| CXXRecordDecl *RD = |
| getLangOpts().CPlusPlus ? Type->getAsCXXRecordDecl() : nullptr; |
| // FIXME This code must be replaced by actual assignment of the |
| // threadprivate variable. |
| if (RD) { |
| CXXMethodDecl *MD = LookupCopyingAssignment(RD, 0, false, 0); |
| DeclAccessPair FoundDecl = DeclAccessPair::make(MD, MD->getAccess()); |
| if (MD) { |
| if (CheckMemberAccess(ELoc, RD, FoundDecl) == AR_inaccessible || |
| MD->isDeleted()) { |
| Diag(ELoc, diag::err_omp_required_method) |
| << getOpenMPClauseName(OMPC_copyprivate) << 2; |
| bool IsDecl = VD->isThisDeclarationADefinition(Context) == |
| VarDecl::DeclarationOnly; |
| Diag(VD->getLocation(), |
| IsDecl ? diag::note_previous_decl : diag::note_defined_here) |
| << VD; |
| Diag(RD->getLocation(), diag::note_previous_decl) << RD; |
| continue; |
| } |
| MarkFunctionReferenced(ELoc, MD); |
| DiagnoseUseOfDecl(MD, ELoc); |
| } |
| } |
| |
| // No need to mark vars as copyprivate, they are already threadprivate or |
| // implicitly private. |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) |
| return nullptr; |
| |
| return OMPCopyprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPFlushClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| if (VarList.empty()) |
| return nullptr; |
| |
| return OMPFlushClause::Create(Context, StartLoc, LParenLoc, EndLoc, VarList); |
| } |
| |
| #undef DSAStack |