| //===--- 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/Basic/OpenMPKinds.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/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'. |
| }; |
| |
| /// \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; |
| DSAVarData() : DKind(OMPD_unknown), CKind(OMPC_unknown), RefExpr(0) { } |
| }; |
| private: |
| struct DSAInfo { |
| OpenMPClauseKind Attributes; |
| DeclRefExpr *RefExpr; |
| }; |
| typedef llvm::SmallDenseMap<VarDecl *, DSAInfo, 64> DeclSAMapTy; |
| |
| struct SharingMapTy { |
| DeclSAMapTy SharingMap; |
| DefaultDataSharingAttributes DefaultAttr; |
| OpenMPDirectiveKind Directive; |
| DeclarationNameInfo DirectiveName; |
| Scope *CurScope; |
| SharingMapTy(OpenMPDirectiveKind DKind, |
| const DeclarationNameInfo &Name, |
| Scope *CurScope) |
| : SharingMap(), DefaultAttr(DSA_unspecified), Directive(DKind), |
| DirectiveName(Name), CurScope(CurScope) { } |
| SharingMapTy() |
| : SharingMap(), DefaultAttr(DSA_unspecified), |
| Directive(OMPD_unknown), DirectiveName(), |
| CurScope(0) { } |
| }; |
| |
| typedef SmallVector<SharingMapTy, 64> StackTy; |
| |
| /// \brief Stack of used declaration and their data-sharing attributes. |
| StackTy Stack; |
| Sema &Actions; |
| |
| 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), Actions(S) { } |
| |
| void push(OpenMPDirectiveKind DKind, const DeclarationNameInfo &DirName, |
| Scope *CurScope) { |
| Stack.push_back(SharingMapTy(DKind, DirName, CurScope)); |
| } |
| |
| void pop() { |
| assert(Stack.size() > 1 && "Data-sharing attributes stack is empty!"); |
| Stack.pop_back(); |
| } |
| |
| /// \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); |
| /// \brief Returns data-sharing attributes for the specified declaration. |
| DSAVarData getImplicitDSA(VarDecl *D); |
| /// \brief Checks if the specified variables has \a CKind data-sharing |
| /// attribute in \a DKind directive. |
| DSAVarData hasDSA(VarDecl *D, OpenMPClauseKind CKind, |
| OpenMPDirectiveKind DKind = OMPD_unknown); |
| |
| /// \brief Returns currently analyzed directive. |
| OpenMPDirectiveKind getCurrentDirective() const { |
| return Stack.back().Directive; |
| } |
| |
| /// \brief Set default data sharing attribute to none. |
| void setDefaultDSANone() { Stack.back().DefaultAttr = DSA_none; } |
| /// \brief Set default data sharing attribute to shared. |
| void setDefaultDSAShared() { Stack.back().DefaultAttr = DSA_shared; } |
| |
| DefaultDataSharingAttributes getDefaultDSA() const { |
| return Stack.back().DefaultAttr; |
| } |
| |
| /// \brief Checks if the spewcified variable is threadprivate. |
| bool isThreadPrivate(VarDecl *D) { |
| DSAVarData DVar = getTopDSA(D); |
| return (DVar.CKind == OMPC_threadprivate || DVar.CKind == OMPC_copyin); |
| } |
| |
| Scope *getCurScope() const { return Stack.back().CurScope; } |
| Scope *getCurScope() { return Stack.back().CurScope; } |
| }; |
| } // end anonymous namespace. |
| |
| DSAStackTy::DSAVarData DSAStackTy::getDSA(StackTy::reverse_iterator Iter, |
| VarDecl *D) { |
| DSAVarData DVar; |
| if (Iter == Stack.rend() - 1) { |
| // 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. |
| // TODO |
| 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 (DVar.DKind != OMPD_parallel) { |
| 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; |
| 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; |
| 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. |
| if (DVar.DKind == OMPD_parallel) { |
| 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. |
| // TODO |
| 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 = 0; |
| DVar.DKind = OMPD_task; |
| DVar.CKind = OMPC_firstprivate; |
| return DVar; |
| } |
| if (I->Directive == OMPD_parallel) 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); |
| } |
| |
| 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 = Stack.rend() - 1; |
| Scope *TopScope = 0; |
| while (I != E && I->Directive != OMPD_parallel) { |
| ++I; |
| } |
| if (I == E) return false; |
| TopScope = I->CurScope ? I->CurScope->getParent() : 0; |
| Scope *CurScope = getCurScope(); |
| while (CurScope != TopScope && !CurScope->isDeclScope(D)) { |
| CurScope = CurScope->getParent(); |
| } |
| return CurScope != TopScope; |
| } |
| return false; |
| } |
| |
| DSAStackTy::DSAVarData DSAStackTy::getTopDSA(VarDecl *D) { |
| 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 = getCurrentDirective(); |
| if (Kind != OMPD_parallel) { |
| if (isOpenMPLocal(D, std::next(Stack.rbegin())) && 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 memebers 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, OMPC_firstprivate); |
| 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(Actions.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 = Actions.getLangOpts().CPlusPlus ? |
| Type->getAsCXXRecordDecl() : 0; |
| if (IsConstant && |
| !(Actions.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, OMPC_firstprivate); |
| 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. |
| if (Stack.back().SharingMap.count(D)) { |
| DVar.RefExpr = Stack.back().SharingMap[D].RefExpr; |
| DVar.CKind = Stack.back().SharingMap[D].Attributes; |
| } |
| |
| return DVar; |
| } |
| |
| DSAStackTy::DSAVarData DSAStackTy::getImplicitDSA(VarDecl *D) { |
| return getDSA(std::next(Stack.rbegin()), D); |
| } |
| |
| DSAStackTy::DSAVarData DSAStackTy::hasDSA(VarDecl *D, OpenMPClauseKind CKind, |
| OpenMPDirectiveKind DKind) { |
| for (StackTy::reverse_iterator I = std::next(Stack.rbegin()), |
| E = std::prev(Stack.rend()); |
| I != E; ++I) { |
| if (DKind != OMPD_unknown && DKind != I->Directive) continue; |
| DSAVarData DVar = getDSA(I, D); |
| if (DVar.CKind == CKind) |
| return DVar; |
| } |
| return DSAVarData(); |
| } |
| |
| 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) { |
| DSAStack->push(DKind, DirName, CurScope); |
| PushExpressionEvaluationContext(PotentiallyEvaluated); |
| } |
| |
| void Sema::EndOpenMPDSABlock(Stmt *CurDirective) { |
| DSAStack->pop(); |
| DiscardCleanupsInEvaluationContext(); |
| PopExpressionEvaluationContext(); |
| } |
| |
| namespace { |
| |
| class VarDeclFilterCCC : public CorrectionCandidateCallback { |
| private: |
| Sema &Actions; |
| public: |
| VarDeclFilterCCC(Sema &S) : Actions(S) { } |
| bool ValidateCandidate(const TypoCorrection &Candidate) override { |
| NamedDecl *ND = Candidate.getCorrectionDecl(); |
| if (VarDecl *VD = dyn_cast_or_null<VarDecl>(ND)) { |
| return VD->hasGlobalStorage() && |
| Actions.isDeclInScope(ND, Actions.getCurLexicalContext(), |
| Actions.getCurScope()); |
| } |
| return false; |
| } |
| }; |
| } |
| |
| 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, |
| 0, 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(); |
| } |
| |
| OMPThreadPrivateDecl *Sema::CheckOMPThreadPrivateDecl( |
| SourceLocation Loc, |
| ArrayRef<Expr *> VarList) { |
| SmallVector<Expr *, 8> Vars; |
| for (ArrayRef<Expr *>::iterator I = VarList.begin(), |
| E = VarList.end(); |
| I != E; ++I) { |
| DeclRefExpr *DE = cast<DeclRefExpr>(*I); |
| 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; |
| } |
| |
| Vars.push_back(*I); |
| DSAStack->addDSA(VD, DE, OMPC_threadprivate); |
| } |
| OMPThreadPrivateDecl *D = 0; |
| if (!Vars.empty()) { |
| D = OMPThreadPrivateDecl::Create(Context, getCurLexicalContext(), Loc, |
| Vars); |
| D->setAccess(AS_public); |
| } |
| return D; |
| } |
| |
| namespace { |
| class DSAAttrChecker : public StmtVisitor<DSAAttrChecker, void> { |
| DSAStackTy *Stack; |
| Sema &Actions; |
| bool ErrorFound; |
| CapturedStmt *CS; |
| llvm::SmallVector<Expr *, 8> ImplicitFirstprivate; |
| public: |
| void VisitDeclRefExpr(DeclRefExpr *E) { |
| if(VarDecl *VD = dyn_cast<VarDecl>(E->getDecl())) { |
| // Skip internally declared variables. |
| if (VD->isLocalVarDecl() && !CS->capturesVariable(VD)) return; |
| |
| SourceLocation ELoc = E->getExprLoc(); |
| |
| OpenMPDirectiveKind DKind = Stack->getCurrentDirective(); |
| DSAStackTy::DSAVarData DVar = Stack->getTopDSA(VD); |
| if (DVar.CKind != OMPC_unknown) { |
| if (DKind == OMPD_task && DVar.CKind != OMPC_shared && |
| !Stack->isThreadPrivate(VD) && !DVar.RefExpr) |
| ImplicitFirstprivate.push_back(DVar.RefExpr); |
| return; |
| } |
| // 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 && |
| (DKind == OMPD_parallel || DKind == OMPD_task)) { |
| ErrorFound = true; |
| Actions.Diag(ELoc, diag::err_omp_no_dsa_for_variable) << VD; |
| 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. |
| // TODO: |
| |
| // Define implicit data-sharing attributes for task. |
| DVar = Stack->getImplicitDSA(VD); |
| if (DKind == OMPD_task && DVar.CKind != OMPC_shared) |
| ImplicitFirstprivate.push_back(DVar.RefExpr); |
| } |
| } |
| void VisitOMPExecutableDirective(OMPExecutableDirective *S) { |
| for (ArrayRef<OMPClause *>::iterator I = S->clauses().begin(), |
| E = S->clauses().end(); |
| I != E; ++I) |
| if (OMPClause *C = *I) |
| for (StmtRange R = C->children(); R; ++R) |
| if (Stmt *Child = *R) |
| Visit(Child); |
| } |
| void VisitStmt(Stmt *S) { |
| for (Stmt::child_iterator I = S->child_begin(), E = S->child_end(); |
| I != E; ++I) |
| if (Stmt *Child = *I) |
| if (!isa<OMPExecutableDirective>(Child)) |
| Visit(Child); |
| } |
| |
| bool isErrorFound() { return ErrorFound; } |
| ArrayRef<Expr *> getImplicitFirstprivate() { return ImplicitFirstprivate; } |
| |
| DSAAttrChecker(DSAStackTy *S, Sema &Actions, CapturedStmt *CS) |
| : Stack(S), Actions(Actions), ErrorFound(false), CS(CS) { } |
| }; |
| } |
| |
| StmtResult Sema::ActOnOpenMPExecutableDirective(OpenMPDirectiveKind Kind, |
| ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| assert(AStmt && isa<CapturedStmt>(AStmt) && "Captured statement expected"); |
| |
| StmtResult Res = StmtError(); |
| |
| // 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. |
| llvm::SmallVector<OMPClause *, 8> ClausesWithImplicit; |
| ClausesWithImplicit.append(Clauses.begin(), Clauses.end()); |
| |
| bool ErrorFound = false; |
| 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); |
| break; |
| case OMPD_threadprivate: |
| case OMPD_task: |
| llvm_unreachable("OpenMP Directive is not allowed"); |
| case OMPD_unknown: |
| case NUM_OPENMP_DIRECTIVES: |
| llvm_unreachable("Unknown OpenMP directive"); |
| } |
| |
| if (ErrorFound) return StmtError(); |
| return Res; |
| } |
| |
| StmtResult Sema::ActOnOpenMPParallelDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| getCurFunction()->setHasBranchProtectedScope(); |
| |
| return Owned(OMPParallelDirective::Create(Context, StartLoc, EndLoc, |
| Clauses, AStmt)); |
| } |
| |
| StmtResult Sema::ActOnOpenMPSimdDirective(ArrayRef<OMPClause *> Clauses, |
| Stmt *AStmt, |
| SourceLocation StartLoc, |
| SourceLocation EndLoc) { |
| Stmt *CStmt = AStmt; |
| while (CapturedStmt *CS = dyn_cast_or_null<CapturedStmt>(CStmt)) |
| CStmt = CS->getCapturedStmt(); |
| while (AttributedStmt *AS = dyn_cast_or_null<AttributedStmt>(CStmt)) |
| CStmt = AS->getSubStmt(); |
| ForStmt *For = dyn_cast<ForStmt>(CStmt); |
| if (!For) { |
| Diag(CStmt->getLocStart(), diag::err_omp_not_for) |
| << getOpenMPDirectiveName(OMPD_simd); |
| return StmtError(); |
| } |
| |
| // FIXME: Checking loop canonical form, collapsing etc. |
| |
| getCurFunction()->setHasBranchProtectedScope(); |
| return Owned(OMPSimdDirective::Create(Context, StartLoc, EndLoc, |
| Clauses, AStmt)); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSingleExprClause(OpenMPClauseKind Kind, |
| Expr *Expr, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| OMPClause *Res = 0; |
| switch (Kind) { |
| case OMPC_if: |
| Res = ActOnOpenMPIfClause(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_default: |
| case OMPC_private: |
| case OMPC_firstprivate: |
| case OMPC_shared: |
| case OMPC_linear: |
| case OMPC_copyin: |
| case OMPC_threadprivate: |
| case OMPC_unknown: |
| case NUM_OPENMP_CLAUSES: |
| 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 0; |
| |
| ValExpr = Val.take(); |
| } |
| |
| return new (Context) OMPIfClause(ValExpr, StartLoc, LParenLoc, EndLoc); |
| } |
| |
| ExprResult Sema::PerformImplicitIntegerConversion(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 &S, SourceLocation Loc, QualType T, QualType ConvTy) 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 = |
| PerformImplicitIntegerConversion(NumThreadsLoc, NumThreads); |
| if (Val.isInvalid()) |
| return 0; |
| |
| ValExpr = Val.take(); |
| |
| // 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 0; |
| } |
| } |
| |
| 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 Owned(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 0; |
| return new (Context) |
| OMPSafelenClause(Safelen.take(), StartLoc, LParenLoc, EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSimpleClause(OpenMPClauseKind Kind, |
| unsigned Argument, |
| SourceLocation ArgumentLoc, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| OMPClause *Res = 0; |
| switch (Kind) { |
| case OMPC_default: |
| Res = |
| ActOnOpenMPDefaultClause(static_cast<OpenMPDefaultClauseKind>(Argument), |
| ArgumentLoc, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_if: |
| case OMPC_num_threads: |
| case OMPC_safelen: |
| case OMPC_private: |
| case OMPC_firstprivate: |
| case OMPC_shared: |
| case OMPC_linear: |
| case OMPC_copyin: |
| case OMPC_threadprivate: |
| case OMPC_unknown: |
| case NUM_OPENMP_CLAUSES: |
| 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(NUM_OPENMP_DEFAULT_KINDS > 1, |
| "NUM_OPENMP_DEFAULT_KINDS not greater than 1"); |
| std::string Sep(", "); |
| for (unsigned i = OMPC_DEFAULT_unknown + 1; |
| i < NUM_OPENMP_DEFAULT_KINDS; ++i) { |
| Values += "'"; |
| Values += getOpenMPSimpleClauseTypeName(OMPC_default, i); |
| Values += "'"; |
| switch (i) { |
| case NUM_OPENMP_DEFAULT_KINDS - 2: |
| Values += " or "; |
| break; |
| case NUM_OPENMP_DEFAULT_KINDS - 1: |
| break; |
| default: |
| Values += Sep; |
| break; |
| } |
| } |
| Diag(KindKwLoc, diag::err_omp_unexpected_clause_value) |
| << Values << getOpenMPClauseName(OMPC_default); |
| return 0; |
| } |
| switch (Kind) { |
| case OMPC_DEFAULT_none: |
| DSAStack->setDefaultDSANone(); |
| break; |
| case OMPC_DEFAULT_shared: |
| DSAStack->setDefaultDSAShared(); |
| break; |
| case OMPC_DEFAULT_unknown: |
| case NUM_OPENMP_DEFAULT_KINDS: |
| llvm_unreachable("Clause kind is not allowed."); |
| break; |
| } |
| return new (Context) OMPDefaultClause(Kind, KindKwLoc, StartLoc, LParenLoc, |
| EndLoc); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPVarListClause(OpenMPClauseKind Kind, |
| ArrayRef<Expr *> VarList, |
| Expr *TailExpr, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation ColonLoc, |
| SourceLocation EndLoc) { |
| OMPClause *Res = 0; |
| switch (Kind) { |
| case OMPC_private: |
| Res = ActOnOpenMPPrivateClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_firstprivate: |
| Res = ActOnOpenMPFirstprivateClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_shared: |
| Res = ActOnOpenMPSharedClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_linear: |
| Res = ActOnOpenMPLinearClause(VarList, TailExpr, StartLoc, LParenLoc, |
| ColonLoc, EndLoc); |
| break; |
| case OMPC_copyin: |
| Res = ActOnOpenMPCopyinClause(VarList, StartLoc, LParenLoc, EndLoc); |
| break; |
| case OMPC_if: |
| case OMPC_num_threads: |
| case OMPC_safelen: |
| case OMPC_default: |
| case OMPC_threadprivate: |
| case OMPC_unknown: |
| case NUM_OPENMP_CLAUSES: |
| 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 (ArrayRef<Expr *>::iterator I = VarList.begin(), E = VarList.end(); |
| I != E; ++I) { |
| assert(*I && "NULL expr in OpenMP private clause."); |
| if (isa<DependentScopeDeclRefExpr>(*I)) { |
| // It will be analyzed later. |
| Vars.push_back(*I); |
| continue; |
| } |
| |
| SourceLocation ELoc = (*I)->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>(*I); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) |
| << (*I)->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 accesible, 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() : 0; |
| 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); |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_private) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_private); |
| if (DVar.RefExpr) { |
| Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| } else { |
| Diag(VD->getLocation(), diag::note_omp_predetermined_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| } |
| continue; |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_private); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) return 0; |
| |
| return OMPPrivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPFirstprivateClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (ArrayRef<Expr *>::iterator I = VarList.begin(), E = VarList.end(); |
| I != E; ++I) { |
| assert(*I && "NULL expr in OpenMP firstprivate clause."); |
| if (isa<DependentScopeDeclRefExpr>(*I)) { |
| // It will be analyzed later. |
| Vars.push_back(*I); |
| continue; |
| } |
| |
| SourceLocation ELoc = (*I)->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>(*I); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) |
| << (*I)->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()) { |
| 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 accesible, unambiguous copy constructor for the |
| // class type. |
| Type = Context.getBaseElementType(Type); |
| CXXRecordDecl *RD = getLangOpts().CPlusPlus ? |
| Type.getNonReferenceType()->getAsCXXRecordDecl() : 0; |
| 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()) { |
| 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()) { |
| 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 StartLoc and EndLoc are invalid - this is an implicit firstprivate |
| // variable and it was checked already. |
| if (StartLoc.isValid() && EndLoc.isValid()) { |
| DSAStackTy::DSAVarData DVar = DSAStack->getTopDSA(VD); |
| 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. |
| // TODO: add processing for lastprivate. |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_firstprivate && |
| DVar.RefExpr) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_firstprivate); |
| Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| 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); |
| Diag(VD->getLocation(), diag::note_omp_predetermined_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| continue; |
| } |
| |
| // 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. |
| // 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. |
| // TODO: |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_firstprivate); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) return 0; |
| |
| return OMPFirstprivateClause::Create(Context, StartLoc, LParenLoc, EndLoc, |
| Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPSharedClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (ArrayRef<Expr *>::iterator I = VarList.begin(), E = VarList.end(); |
| I != E; ++I) { |
| assert(*I && "NULL expr in OpenMP shared clause."); |
| if (isa<DependentScopeDeclRefExpr>(*I)) { |
| // It will be analyzed later. |
| Vars.push_back(*I); |
| continue; |
| } |
| |
| SourceLocation ELoc = (*I)->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>(*I); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) |
| << (*I)->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); |
| if (DVar.CKind != OMPC_unknown && DVar.CKind != OMPC_shared && DVar.RefExpr) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) |
| << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_shared); |
| Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| continue; |
| } |
| |
| DSAStack->addDSA(VD, DE, OMPC_shared); |
| Vars.push_back(DE); |
| } |
| |
| if (Vars.empty()) return 0; |
| |
| return OMPSharedClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| OMPClause *Sema::ActOnOpenMPLinearClause(ArrayRef<Expr *> VarList, Expr *Step, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation ColonLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (ArrayRef<Expr *>::iterator I = VarList.begin(), E = VarList.end(); |
| I != E; ++I) { |
| assert(*I && "NULL expr in OpenMP linear clause."); |
| if (isa<DependentScopeDeclRefExpr>(*I)) { |
| // It will be analyzed later. |
| Vars.push_back(*I); |
| 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 = (*I)->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>(*I); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) << (*I)->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); |
| if (DVar.RefExpr) { |
| Diag(ELoc, diag::err_omp_wrong_dsa) << getOpenMPClauseName(DVar.CKind) |
| << getOpenMPClauseName(OMPC_linear); |
| Diag(DVar.RefExpr->getExprLoc(), diag::note_omp_explicit_dsa) |
| << getOpenMPClauseName(DVar.CKind); |
| 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 0; |
| |
| Expr *StepExpr = Step; |
| if (Step && !Step->isValueDependent() && !Step->isTypeDependent() && |
| !Step->isInstantiationDependent() && |
| !Step->containsUnexpandedParameterPack()) { |
| SourceLocation StepLoc = Step->getLocStart(); |
| ExprResult Val = PerformImplicitIntegerConversion(StepLoc, Step); |
| if (Val.isInvalid()) |
| return 0; |
| StepExpr = Val.take(); |
| |
| // 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::ActOnOpenMPCopyinClause(ArrayRef<Expr *> VarList, |
| SourceLocation StartLoc, |
| SourceLocation LParenLoc, |
| SourceLocation EndLoc) { |
| SmallVector<Expr *, 8> Vars; |
| for (ArrayRef<Expr *>::iterator I = VarList.begin(), E = VarList.end(); |
| I != E; ++I) { |
| assert(*I && "NULL expr in OpenMP copyin clause."); |
| if (isa<DependentScopeDeclRefExpr>(*I)) { |
| // It will be analyzed later. |
| Vars.push_back(*I); |
| continue; |
| } |
| |
| SourceLocation ELoc = (*I)->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>(*I); |
| if (!DE || !isa<VarDecl>(DE->getDecl())) { |
| Diag(ELoc, diag::err_omp_expected_var_name) |
| << (*I)->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 accesible, unambiguous copy assignment |
| // operator for the class type. |
| Type = Context.getBaseElementType(Type); |
| CXXRecordDecl *RD = getLangOpts().CPlusPlus ? |
| Type->getAsCXXRecordDecl() : 0; |
| if (RD) { |
| CXXMethodDecl *MD = LookupCopyingAssignment(RD, 0, false, 0); |
| DeclAccessPair FoundDecl = DeclAccessPair::make(MD, MD->getAccess()); |
| if (!MD || |
| 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 0; |
| |
| return OMPCopyinClause::Create(Context, StartLoc, LParenLoc, EndLoc, Vars); |
| } |
| |
| #undef DSAStack |
