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Diffstat (limited to 'contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp')
| -rw-r--r-- | contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp | 2421 |
1 files changed, 2421 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp b/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp new file mode 100644 index 000000000000..b71315505de9 --- /dev/null +++ b/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp @@ -0,0 +1,2421 @@ +//===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements serialization for Declarations. +// +//===----------------------------------------------------------------------===// + +#include "ASTCommon.h" +#include "clang/AST/DeclCXX.h" +#include "clang/AST/DeclContextInternals.h" +#include "clang/AST/DeclTemplate.h" +#include "clang/AST/DeclVisitor.h" +#include "clang/AST/Expr.h" +#include "clang/AST/OpenMPClause.h" +#include "clang/AST/PrettyDeclStackTrace.h" +#include "clang/Basic/SourceManager.h" +#include "clang/Serialization/ASTReader.h" +#include "clang/Serialization/ASTWriter.h" +#include "llvm/Bitstream/BitstreamWriter.h" +#include "llvm/Support/ErrorHandling.h" +using namespace clang; +using namespace serialization; + +//===----------------------------------------------------------------------===// +// Declaration serialization +//===----------------------------------------------------------------------===// + +namespace clang { + class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { + ASTWriter &Writer; + ASTContext &Context; + ASTRecordWriter Record; + + serialization::DeclCode Code; + unsigned AbbrevToUse; + + public: + ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, + ASTWriter::RecordDataImpl &Record) + : Writer(Writer), Context(Context), Record(Writer, Record), + Code((serialization::DeclCode)0), AbbrevToUse(0) {} + + uint64_t Emit(Decl *D) { + if (!Code) + llvm::report_fatal_error(StringRef("unexpected declaration kind '") + + D->getDeclKindName() + "'"); + return Record.Emit(Code, AbbrevToUse); + } + + void Visit(Decl *D); + + void VisitDecl(Decl *D); + void VisitPragmaCommentDecl(PragmaCommentDecl *D); + void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D); + void VisitTranslationUnitDecl(TranslationUnitDecl *D); + void VisitNamedDecl(NamedDecl *D); + void VisitLabelDecl(LabelDecl *LD); + void VisitNamespaceDecl(NamespaceDecl *D); + void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); + void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); + void VisitTypeDecl(TypeDecl *D); + void VisitTypedefNameDecl(TypedefNameDecl *D); + void VisitTypedefDecl(TypedefDecl *D); + void VisitTypeAliasDecl(TypeAliasDecl *D); + void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); + void VisitTagDecl(TagDecl *D); + void VisitEnumDecl(EnumDecl *D); + void VisitRecordDecl(RecordDecl *D); + void VisitCXXRecordDecl(CXXRecordDecl *D); + void VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D); + void VisitClassTemplatePartialSpecializationDecl( + ClassTemplatePartialSpecializationDecl *D); + void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D); + void VisitVarTemplatePartialSpecializationDecl( + VarTemplatePartialSpecializationDecl *D); + void VisitClassScopeFunctionSpecializationDecl( + ClassScopeFunctionSpecializationDecl *D); + void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); + void VisitValueDecl(ValueDecl *D); + void VisitEnumConstantDecl(EnumConstantDecl *D); + void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); + void VisitDeclaratorDecl(DeclaratorDecl *D); + void VisitFunctionDecl(FunctionDecl *D); + void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D); + void VisitCXXMethodDecl(CXXMethodDecl *D); + void VisitCXXConstructorDecl(CXXConstructorDecl *D); + void VisitCXXDestructorDecl(CXXDestructorDecl *D); + void VisitCXXConversionDecl(CXXConversionDecl *D); + void VisitFieldDecl(FieldDecl *D); + void VisitMSPropertyDecl(MSPropertyDecl *D); + void VisitIndirectFieldDecl(IndirectFieldDecl *D); + void VisitVarDecl(VarDecl *D); + void VisitImplicitParamDecl(ImplicitParamDecl *D); + void VisitParmVarDecl(ParmVarDecl *D); + void VisitDecompositionDecl(DecompositionDecl *D); + void VisitBindingDecl(BindingDecl *D); + void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); + void VisitTemplateDecl(TemplateDecl *D); + void VisitConceptDecl(ConceptDecl *D); + void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); + void VisitClassTemplateDecl(ClassTemplateDecl *D); + void VisitVarTemplateDecl(VarTemplateDecl *D); + void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); + void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); + void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); + void VisitUsingDecl(UsingDecl *D); + void VisitUsingPackDecl(UsingPackDecl *D); + void VisitUsingShadowDecl(UsingShadowDecl *D); + void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D); + void VisitLinkageSpecDecl(LinkageSpecDecl *D); + void VisitExportDecl(ExportDecl *D); + void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); + void VisitImportDecl(ImportDecl *D); + void VisitAccessSpecDecl(AccessSpecDecl *D); + void VisitFriendDecl(FriendDecl *D); + void VisitFriendTemplateDecl(FriendTemplateDecl *D); + void VisitStaticAssertDecl(StaticAssertDecl *D); + void VisitBlockDecl(BlockDecl *D); + void VisitCapturedDecl(CapturedDecl *D); + void VisitEmptyDecl(EmptyDecl *D); + + void VisitDeclContext(DeclContext *DC); + template <typename T> void VisitRedeclarable(Redeclarable<T> *D); + + + // FIXME: Put in the same order is DeclNodes.td? + void VisitObjCMethodDecl(ObjCMethodDecl *D); + void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D); + void VisitObjCContainerDecl(ObjCContainerDecl *D); + void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); + void VisitObjCIvarDecl(ObjCIvarDecl *D); + void VisitObjCProtocolDecl(ObjCProtocolDecl *D); + void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); + void VisitObjCCategoryDecl(ObjCCategoryDecl *D); + void VisitObjCImplDecl(ObjCImplDecl *D); + void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); + void VisitObjCImplementationDecl(ObjCImplementationDecl *D); + void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); + void VisitObjCPropertyDecl(ObjCPropertyDecl *D); + void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); + void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D); + void VisitOMPAllocateDecl(OMPAllocateDecl *D); + void VisitOMPRequiresDecl(OMPRequiresDecl *D); + void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D); + void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D); + void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D); + + /// Add an Objective-C type parameter list to the given record. + void AddObjCTypeParamList(ObjCTypeParamList *typeParams) { + // Empty type parameter list. + if (!typeParams) { + Record.push_back(0); + return; + } + + Record.push_back(typeParams->size()); + for (auto typeParam : *typeParams) { + Record.AddDeclRef(typeParam); + } + Record.AddSourceLocation(typeParams->getLAngleLoc()); + Record.AddSourceLocation(typeParams->getRAngleLoc()); + } + + /// Add to the record the first declaration from each module file that + /// provides a declaration of D. The intent is to provide a sufficient + /// set such that reloading this set will load all current redeclarations. + void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) { + llvm::MapVector<ModuleFile*, const Decl*> Firsts; + // FIXME: We can skip entries that we know are implied by others. + for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) { + if (R->isFromASTFile()) + Firsts[Writer.Chain->getOwningModuleFile(R)] = R; + else if (IncludeLocal) + Firsts[nullptr] = R; + } + for (const auto &F : Firsts) + Record.AddDeclRef(F.second); + } + + /// Get the specialization decl from an entry in the specialization list. + template <typename EntryType> + typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType * + getSpecializationDecl(EntryType &T) { + return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T); + } + + /// Get the list of partial specializations from a template's common ptr. + template<typename T> + decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) { + return Common->PartialSpecializations; + } + ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) { + return None; + } + + template<typename DeclTy> + void AddTemplateSpecializations(DeclTy *D) { + auto *Common = D->getCommonPtr(); + + // If we have any lazy specializations, and the external AST source is + // our chained AST reader, we can just write out the DeclIDs. Otherwise, + // we need to resolve them to actual declarations. + if (Writer.Chain != Writer.Context->getExternalSource() && + Common->LazySpecializations) { + D->LoadLazySpecializations(); + assert(!Common->LazySpecializations); + } + + ArrayRef<DeclID> LazySpecializations; + if (auto *LS = Common->LazySpecializations) + LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]); + + // Add a slot to the record for the number of specializations. + unsigned I = Record.size(); + Record.push_back(0); + + // AddFirstDeclFromEachModule might trigger deserialization, invalidating + // *Specializations iterators. + llvm::SmallVector<const Decl*, 16> Specs; + for (auto &Entry : Common->Specializations) + Specs.push_back(getSpecializationDecl(Entry)); + for (auto &Entry : getPartialSpecializations(Common)) + Specs.push_back(getSpecializationDecl(Entry)); + + for (auto *D : Specs) { + assert(D->isCanonicalDecl() && "non-canonical decl in set"); + AddFirstDeclFromEachModule(D, /*IncludeLocal*/true); + } + Record.append(LazySpecializations.begin(), LazySpecializations.end()); + + // Update the size entry we added earlier. + Record[I] = Record.size() - I - 1; + } + + /// Ensure that this template specialization is associated with the specified + /// template on reload. + void RegisterTemplateSpecialization(const Decl *Template, + const Decl *Specialization) { + Template = Template->getCanonicalDecl(); + + // If the canonical template is local, we'll write out this specialization + // when we emit it. + // FIXME: We can do the same thing if there is any local declaration of + // the template, to avoid emitting an update record. + if (!Template->isFromASTFile()) + return; + + // We only need to associate the first local declaration of the + // specialization. The other declarations will get pulled in by it. + if (Writer.getFirstLocalDecl(Specialization) != Specialization) + return; + + Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate( + UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization)); + } + }; +} + +void ASTDeclWriter::Visit(Decl *D) { + DeclVisitor<ASTDeclWriter>::Visit(D); + + // Source locations require array (variable-length) abbreviations. The + // abbreviation infrastructure requires that arrays are encoded last, so + // we handle it here in the case of those classes derived from DeclaratorDecl + if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { + if (auto *TInfo = DD->getTypeSourceInfo()) + Record.AddTypeLoc(TInfo->getTypeLoc()); + } + + // Handle FunctionDecl's body here and write it after all other Stmts/Exprs + // have been written. We want it last because we will not read it back when + // retrieving it from the AST, we'll just lazily set the offset. + if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { + Record.push_back(FD->doesThisDeclarationHaveABody()); + if (FD->doesThisDeclarationHaveABody()) + Record.AddFunctionDefinition(FD); + } + + // If this declaration is also a DeclContext, write blocks for the + // declarations that lexically stored inside its context and those + // declarations that are visible from its context. + if (DeclContext *DC = dyn_cast<DeclContext>(D)) + VisitDeclContext(DC); +} + +void ASTDeclWriter::VisitDecl(Decl *D) { + Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext())); + if (D->getDeclContext() != D->getLexicalDeclContext()) + Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext())); + else + Record.push_back(0); + Record.push_back(D->isInvalidDecl()); + Record.push_back(D->hasAttrs()); + if (D->hasAttrs()) + Record.AddAttributes(D->getAttrs()); + Record.push_back(D->isImplicit()); + Record.push_back(D->isUsed(false)); + Record.push_back(D->isReferenced()); + Record.push_back(D->isTopLevelDeclInObjCContainer()); + Record.push_back(D->getAccess()); + Record.push_back(D->isModulePrivate()); + Record.push_back(Writer.getSubmoduleID(D->getOwningModule())); + + // If this declaration injected a name into a context different from its + // lexical context, and that context is an imported namespace, we need to + // update its visible declarations to include this name. + // + // This happens when we instantiate a class with a friend declaration or a + // function with a local extern declaration, for instance. + // + // FIXME: Can we handle this in AddedVisibleDecl instead? + if (D->isOutOfLine()) { + auto *DC = D->getDeclContext(); + while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { + if (!NS->isFromASTFile()) + break; + Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); + if (!NS->isInlineNamespace()) + break; + DC = NS->getParent(); + } + } +} + +void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) { + StringRef Arg = D->getArg(); + Record.push_back(Arg.size()); + VisitDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Record.push_back(D->getCommentKind()); + Record.AddString(Arg); + Code = serialization::DECL_PRAGMA_COMMENT; +} + +void ASTDeclWriter::VisitPragmaDetectMismatchDecl( + PragmaDetectMismatchDecl *D) { + StringRef Name = D->getName(); + StringRef Value = D->getValue(); + Record.push_back(Name.size() + 1 + Value.size()); + VisitDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Record.AddString(Name); + Record.AddString(Value); + Code = serialization::DECL_PRAGMA_DETECT_MISMATCH; +} + +void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { + llvm_unreachable("Translation units aren't directly serialized"); +} + +void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { + VisitDecl(D); + Record.AddDeclarationName(D->getDeclName()); + Record.push_back(needsAnonymousDeclarationNumber(D) + ? Writer.getAnonymousDeclarationNumber(D) + : 0); +} + +void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { + VisitNamedDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); +} + +void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { + VisitRedeclarable(D); + VisitTypeDecl(D); + Record.AddTypeSourceInfo(D->getTypeSourceInfo()); + Record.push_back(D->isModed()); + if (D->isModed()) + Record.AddTypeRef(D->getUnderlyingType()); + Record.AddDeclRef(D->getAnonDeclWithTypedefName(false)); +} + +void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { + VisitTypedefNameDecl(D); + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->isImplicit() && + D->getFirstDecl() == D->getMostRecentDecl() && + !D->isInvalidDecl() && + !D->isTopLevelDeclInObjCContainer() && + !D->isModulePrivate() && + !needsAnonymousDeclarationNumber(D) && + D->getDeclName().getNameKind() == DeclarationName::Identifier) + AbbrevToUse = Writer.getDeclTypedefAbbrev(); + + Code = serialization::DECL_TYPEDEF; +} + +void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { + VisitTypedefNameDecl(D); + Record.AddDeclRef(D->getDescribedAliasTemplate()); + Code = serialization::DECL_TYPEALIAS; +} + +void ASTDeclWriter::VisitTagDecl(TagDecl *D) { + VisitRedeclarable(D); + VisitTypeDecl(D); + Record.push_back(D->getIdentifierNamespace()); + Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding + if (!isa<CXXRecordDecl>(D)) + Record.push_back(D->isCompleteDefinition()); + Record.push_back(D->isEmbeddedInDeclarator()); + Record.push_back(D->isFreeStanding()); + Record.push_back(D->isCompleteDefinitionRequired()); + Record.AddSourceRange(D->getBraceRange()); + + if (D->hasExtInfo()) { + Record.push_back(1); + Record.AddQualifierInfo(*D->getExtInfo()); + } else if (auto *TD = D->getTypedefNameForAnonDecl()) { + Record.push_back(2); + Record.AddDeclRef(TD); + Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo()); + } else { + Record.push_back(0); + } +} + +void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { + VisitTagDecl(D); + Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo()); + if (!D->getIntegerTypeSourceInfo()) + Record.AddTypeRef(D->getIntegerType()); + Record.AddTypeRef(D->getPromotionType()); + Record.push_back(D->getNumPositiveBits()); + Record.push_back(D->getNumNegativeBits()); + Record.push_back(D->isScoped()); + Record.push_back(D->isScopedUsingClassTag()); + Record.push_back(D->isFixed()); + Record.push_back(D->getODRHash()); + + if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { + Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); + Record.push_back(MemberInfo->getTemplateSpecializationKind()); + Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); + } else { + Record.AddDeclRef(nullptr); + } + + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->isImplicit() && + !D->isUsed(false) && + !D->hasExtInfo() && + !D->getTypedefNameForAnonDecl() && + D->getFirstDecl() == D->getMostRecentDecl() && + !D->isInvalidDecl() && + !D->isReferenced() && + !D->isTopLevelDeclInObjCContainer() && + D->getAccess() == AS_none && + !D->isModulePrivate() && + !CXXRecordDecl::classofKind(D->getKind()) && + !D->getIntegerTypeSourceInfo() && + !D->getMemberSpecializationInfo() && + !needsAnonymousDeclarationNumber(D) && + D->getDeclName().getNameKind() == DeclarationName::Identifier) + AbbrevToUse = Writer.getDeclEnumAbbrev(); + + Code = serialization::DECL_ENUM; +} + +void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { + VisitTagDecl(D); + Record.push_back(D->hasFlexibleArrayMember()); + Record.push_back(D->isAnonymousStructOrUnion()); + Record.push_back(D->hasObjectMember()); + Record.push_back(D->hasVolatileMember()); + Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize()); + Record.push_back(D->isNonTrivialToPrimitiveCopy()); + Record.push_back(D->isNonTrivialToPrimitiveDestroy()); + Record.push_back(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion()); + Record.push_back(D->hasNonTrivialToPrimitiveDestructCUnion()); + Record.push_back(D->hasNonTrivialToPrimitiveCopyCUnion()); + Record.push_back(D->isParamDestroyedInCallee()); + Record.push_back(D->getArgPassingRestrictions()); + + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->isImplicit() && + !D->isUsed(false) && + !D->hasExtInfo() && + !D->getTypedefNameForAnonDecl() && + D->getFirstDecl() == D->getMostRecentDecl() && + !D->isInvalidDecl() && + !D->isReferenced() && + !D->isTopLevelDeclInObjCContainer() && + D->getAccess() == AS_none && + !D->isModulePrivate() && + !CXXRecordDecl::classofKind(D->getKind()) && + !needsAnonymousDeclarationNumber(D) && + D->getDeclName().getNameKind() == DeclarationName::Identifier) + AbbrevToUse = Writer.getDeclRecordAbbrev(); + + Code = serialization::DECL_RECORD; +} + +void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { + VisitNamedDecl(D); + Record.AddTypeRef(D->getType()); +} + +void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { + VisitValueDecl(D); + Record.push_back(D->getInitExpr()? 1 : 0); + if (D->getInitExpr()) + Record.AddStmt(D->getInitExpr()); + Record.AddAPSInt(D->getInitVal()); + + Code = serialization::DECL_ENUM_CONSTANT; +} + +void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { + VisitValueDecl(D); + Record.AddSourceLocation(D->getInnerLocStart()); + Record.push_back(D->hasExtInfo()); + if (D->hasExtInfo()) + Record.AddQualifierInfo(*D->getExtInfo()); + // The location information is deferred until the end of the record. + Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType() + : QualType()); +} + +void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { + VisitRedeclarable(D); + VisitDeclaratorDecl(D); + Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); + Record.push_back(D->getIdentifierNamespace()); + + // FunctionDecl's body is handled last at ASTWriterDecl::Visit, + // after everything else is written. + Record.push_back(static_cast<int>(D->getStorageClass())); // FIXME: stable encoding + Record.push_back(D->isInlineSpecified()); + Record.push_back(D->isInlined()); + Record.push_back(D->isVirtualAsWritten()); + Record.push_back(D->isPure()); + Record.push_back(D->hasInheritedPrototype()); + Record.push_back(D->hasWrittenPrototype()); + Record.push_back(D->isDeletedBit()); + Record.push_back(D->isTrivial()); + Record.push_back(D->isTrivialForCall()); + Record.push_back(D->isDefaulted()); + Record.push_back(D->isExplicitlyDefaulted()); + Record.push_back(D->hasImplicitReturnZero()); + Record.push_back(D->getConstexprKind()); + Record.push_back(D->usesSEHTry()); + Record.push_back(D->hasSkippedBody()); + Record.push_back(D->isMultiVersion()); + Record.push_back(D->isLateTemplateParsed()); + Record.push_back(D->getLinkageInternal()); + Record.AddSourceLocation(D->getEndLoc()); + + Record.push_back(D->getODRHash()); + + Record.push_back(D->getTemplatedKind()); + switch (D->getTemplatedKind()) { + case FunctionDecl::TK_NonTemplate: + break; + case FunctionDecl::TK_FunctionTemplate: + Record.AddDeclRef(D->getDescribedFunctionTemplate()); + break; + case FunctionDecl::TK_MemberSpecialization: { + MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); + Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); + Record.push_back(MemberInfo->getTemplateSpecializationKind()); + Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); + break; + } + case FunctionDecl::TK_FunctionTemplateSpecialization: { + FunctionTemplateSpecializationInfo * + FTSInfo = D->getTemplateSpecializationInfo(); + + RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); + + Record.AddDeclRef(FTSInfo->getTemplate()); + Record.push_back(FTSInfo->getTemplateSpecializationKind()); + + // Template arguments. + Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); + + // Template args as written. + Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); + if (FTSInfo->TemplateArgumentsAsWritten) { + Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); + for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; + i!=e; ++i) + Record.AddTemplateArgumentLoc( + (*FTSInfo->TemplateArgumentsAsWritten)[i]); + Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc); + Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc); + } + + Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); + + if (MemberSpecializationInfo *MemberInfo = + FTSInfo->getMemberSpecializationInfo()) { + Record.push_back(1); + Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); + Record.push_back(MemberInfo->getTemplateSpecializationKind()); + Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); + } else { + Record.push_back(0); + } + + if (D->isCanonicalDecl()) { + // Write the template that contains the specializations set. We will + // add a FunctionTemplateSpecializationInfo to it when reading. + Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); + } + break; + } + case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { + DependentFunctionTemplateSpecializationInfo * + DFTSInfo = D->getDependentSpecializationInfo(); + + // Templates. + Record.push_back(DFTSInfo->getNumTemplates()); + for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) + Record.AddDeclRef(DFTSInfo->getTemplate(i)); + + // Templates args. + Record.push_back(DFTSInfo->getNumTemplateArgs()); + for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) + Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i)); + Record.AddSourceLocation(DFTSInfo->getLAngleLoc()); + Record.AddSourceLocation(DFTSInfo->getRAngleLoc()); + break; + } + } + + Record.push_back(D->param_size()); + for (auto P : D->parameters()) + Record.AddDeclRef(P); + Code = serialization::DECL_FUNCTION; +} + +static void addExplicitSpecifier(ExplicitSpecifier ES, + ASTRecordWriter &Record) { + uint64_t Kind = static_cast<uint64_t>(ES.getKind()); + Kind = Kind << 1 | static_cast<bool>(ES.getExpr()); + Record.push_back(Kind); + if (ES.getExpr()) { + Record.AddStmt(ES.getExpr()); + } +} + +void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { + addExplicitSpecifier(D->getExplicitSpecifier(), Record); + VisitFunctionDecl(D); + Record.push_back(D->isCopyDeductionCandidate()); + Code = serialization::DECL_CXX_DEDUCTION_GUIDE; +} + +void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { + VisitNamedDecl(D); + // FIXME: convert to LazyStmtPtr? + // Unlike C/C++, method bodies will never be in header files. + bool HasBodyStuff = D->getBody() != nullptr || + D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; + Record.push_back(HasBodyStuff); + if (HasBodyStuff) { + Record.AddStmt(D->getBody()); + Record.AddDeclRef(D->getSelfDecl()); + Record.AddDeclRef(D->getCmdDecl()); + } + Record.push_back(D->isInstanceMethod()); + Record.push_back(D->isVariadic()); + Record.push_back(D->isPropertyAccessor()); + Record.push_back(D->isDefined()); + Record.push_back(D->isOverriding()); + Record.push_back(D->hasSkippedBody()); + + Record.push_back(D->isRedeclaration()); + Record.push_back(D->hasRedeclaration()); + if (D->hasRedeclaration()) { + assert(Context.getObjCMethodRedeclaration(D)); + Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); + } + + // FIXME: stable encoding for @required/@optional + Record.push_back(D->getImplementationControl()); + // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability + Record.push_back(D->getObjCDeclQualifier()); + Record.push_back(D->hasRelatedResultType()); + Record.AddTypeRef(D->getReturnType()); + Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); + Record.AddSourceLocation(D->getEndLoc()); + Record.push_back(D->param_size()); + for (const auto *P : D->parameters()) + Record.AddDeclRef(P); + + Record.push_back(D->getSelLocsKind()); + unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); + SourceLocation *SelLocs = D->getStoredSelLocs(); + Record.push_back(NumStoredSelLocs); + for (unsigned i = 0; i != NumStoredSelLocs; ++i) + Record.AddSourceLocation(SelLocs[i]); + + Code = serialization::DECL_OBJC_METHOD; +} + +void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { + VisitTypedefNameDecl(D); + Record.push_back(D->Variance); + Record.push_back(D->Index); + Record.AddSourceLocation(D->VarianceLoc); + Record.AddSourceLocation(D->ColonLoc); + + Code = serialization::DECL_OBJC_TYPE_PARAM; +} + +void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { + VisitNamedDecl(D); + Record.AddSourceLocation(D->getAtStartLoc()); + Record.AddSourceRange(D->getAtEndRange()); + // Abstract class (no need to define a stable serialization::DECL code). +} + +void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { + VisitRedeclarable(D); + VisitObjCContainerDecl(D); + Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); + AddObjCTypeParamList(D->TypeParamList); + + Record.push_back(D->isThisDeclarationADefinition()); + if (D->isThisDeclarationADefinition()) { + // Write the DefinitionData + ObjCInterfaceDecl::DefinitionData &Data = D->data(); + + Record.AddTypeSourceInfo(D->getSuperClassTInfo()); + Record.AddSourceLocation(D->getEndOfDefinitionLoc()); + Record.push_back(Data.HasDesignatedInitializers); + + // Write out the protocols that are directly referenced by the @interface. + Record.push_back(Data.ReferencedProtocols.size()); + for (const auto *P : D->protocols()) + Record.AddDeclRef(P); + for (const auto &PL : D->protocol_locs()) + Record.AddSourceLocation(PL); + + // Write out the protocols that are transitively referenced. + Record.push_back(Data.AllReferencedProtocols.size()); + for (ObjCList<ObjCProtocolDecl>::iterator + P = Data.AllReferencedProtocols.begin(), + PEnd = Data.AllReferencedProtocols.end(); + P != PEnd; ++P) + Record.AddDeclRef(*P); + + + if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { + // Ensure that we write out the set of categories for this class. + Writer.ObjCClassesWithCategories.insert(D); + + // Make sure that the categories get serialized. + for (; Cat; Cat = Cat->getNextClassCategoryRaw()) + (void)Writer.GetDeclRef(Cat); + } + } + + Code = serialization::DECL_OBJC_INTERFACE; +} + +void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { + VisitFieldDecl(D); + // FIXME: stable encoding for @public/@private/@protected/@package + Record.push_back(D->getAccessControl()); + Record.push_back(D->getSynthesize()); + + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->isImplicit() && + !D->isUsed(false) && + !D->isInvalidDecl() && + !D->isReferenced() && + !D->isModulePrivate() && + !D->getBitWidth() && + !D->hasExtInfo() && + D->getDeclName()) + AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); + + Code = serialization::DECL_OBJC_IVAR; +} + +void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { + VisitRedeclarable(D); + VisitObjCContainerDecl(D); + + Record.push_back(D->isThisDeclarationADefinition()); + if (D->isThisDeclarationADefinition()) { + Record.push_back(D->protocol_size()); + for (const auto *I : D->protocols()) + Record.AddDeclRef(I); + for (const auto &PL : D->protocol_locs()) + Record.AddSourceLocation(PL); + } + + Code = serialization::DECL_OBJC_PROTOCOL; +} + +void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { + VisitFieldDecl(D); + Code = serialization::DECL_OBJC_AT_DEFS_FIELD; +} + +void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { + VisitObjCContainerDecl(D); + Record.AddSourceLocation(D->getCategoryNameLoc()); + Record.AddSourceLocation(D->getIvarLBraceLoc()); + Record.AddSourceLocation(D->getIvarRBraceLoc()); + Record.AddDeclRef(D->getClassInterface()); + AddObjCTypeParamList(D->TypeParamList); + Record.push_back(D->protocol_size()); + for (const auto *I : D->protocols()) + Record.AddDeclRef(I); + for (const auto &PL : D->protocol_locs()) + Record.AddSourceLocation(PL); + Code = serialization::DECL_OBJC_CATEGORY; +} + +void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { + VisitNamedDecl(D); + Record.AddDeclRef(D->getClassInterface()); + Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; +} + +void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { + VisitNamedDecl(D); + Record.AddSourceLocation(D->getAtLoc()); + Record.AddSourceLocation(D->getLParenLoc()); + Record.AddTypeRef(D->getType()); + Record.AddTypeSourceInfo(D->getTypeSourceInfo()); + // FIXME: stable encoding + Record.push_back((unsigned)D->getPropertyAttributes()); + Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); + // FIXME: stable encoding + Record.push_back((unsigned)D->getPropertyImplementation()); + Record.AddDeclarationName(D->getGetterName()); + Record.AddSourceLocation(D->getGetterNameLoc()); + Record.AddDeclarationName(D->getSetterName()); + Record.AddSourceLocation(D->getSetterNameLoc()); + Record.AddDeclRef(D->getGetterMethodDecl()); + Record.AddDeclRef(D->getSetterMethodDecl()); + Record.AddDeclRef(D->getPropertyIvarDecl()); + Code = serialization::DECL_OBJC_PROPERTY; +} + +void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { + VisitObjCContainerDecl(D); + Record.AddDeclRef(D->getClassInterface()); + // Abstract class (no need to define a stable serialization::DECL code). +} + +void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { + VisitObjCImplDecl(D); + Record.AddSourceLocation(D->getCategoryNameLoc()); + Code = serialization::DECL_OBJC_CATEGORY_IMPL; +} + +void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { + VisitObjCImplDecl(D); + Record.AddDeclRef(D->getSuperClass()); + Record.AddSourceLocation(D->getSuperClassLoc()); + Record.AddSourceLocation(D->getIvarLBraceLoc()); + Record.AddSourceLocation(D->getIvarRBraceLoc()); + Record.push_back(D->hasNonZeroConstructors()); + Record.push_back(D->hasDestructors()); + Record.push_back(D->NumIvarInitializers); + if (D->NumIvarInitializers) + Record.AddCXXCtorInitializers( + llvm::makeArrayRef(D->init_begin(), D->init_end())); + Code = serialization::DECL_OBJC_IMPLEMENTATION; +} + +void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { + VisitDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Record.AddDeclRef(D->getPropertyDecl()); + Record.AddDeclRef(D->getPropertyIvarDecl()); + Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); + Record.AddStmt(D->getGetterCXXConstructor()); + Record.AddStmt(D->getSetterCXXAssignment()); + Code = serialization::DECL_OBJC_PROPERTY_IMPL; +} + +void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { + VisitDeclaratorDecl(D); + Record.push_back(D->isMutable()); + + FieldDecl::InitStorageKind ISK = D->InitStorage.getInt(); + Record.push_back(ISK); + if (ISK == FieldDecl::ISK_CapturedVLAType) + Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); + else if (ISK) + Record.AddStmt(D->getInClassInitializer()); + + Record.AddStmt(D->getBitWidth()); + + if (!D->getDeclName()) + Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); + + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->isImplicit() && + !D->isUsed(false) && + !D->isInvalidDecl() && + !D->isReferenced() && + !D->isTopLevelDeclInObjCContainer() && + !D->isModulePrivate() && + !D->getBitWidth() && + !D->hasInClassInitializer() && + !D->hasCapturedVLAType() && + !D->hasExtInfo() && + !ObjCIvarDecl::classofKind(D->getKind()) && + !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && + D->getDeclName()) + AbbrevToUse = Writer.getDeclFieldAbbrev(); + + Code = serialization::DECL_FIELD; +} + +void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { + VisitDeclaratorDecl(D); + Record.AddIdentifierRef(D->getGetterId()); + Record.AddIdentifierRef(D->getSetterId()); + Code = serialization::DECL_MS_PROPERTY; +} + +void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { + VisitValueDecl(D); + Record.push_back(D->getChainingSize()); + + for (const auto *P : D->chain()) + Record.AddDeclRef(P); + Code = serialization::DECL_INDIRECTFIELD; +} + +void ASTDeclWriter::VisitVarDecl(VarDecl *D) { + VisitRedeclarable(D); + VisitDeclaratorDecl(D); + Record.push_back(D->getStorageClass()); + Record.push_back(D->getTSCSpec()); + Record.push_back(D->getInitStyle()); + Record.push_back(D->isARCPseudoStrong()); + if (!isa<ParmVarDecl>(D)) { + Record.push_back(D->isThisDeclarationADemotedDefinition()); + Record.push_back(D->isExceptionVariable()); + Record.push_back(D->isNRVOVariable()); + Record.push_back(D->isCXXForRangeDecl()); + Record.push_back(D->isObjCForDecl()); + Record.push_back(D->isInline()); + Record.push_back(D->isInlineSpecified()); + Record.push_back(D->isConstexpr()); + Record.push_back(D->isInitCapture()); + Record.push_back(D->isPreviousDeclInSameBlockScope()); + if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) + Record.push_back(static_cast<unsigned>(IPD->getParameterKind())); + else + Record.push_back(0); + Record.push_back(D->isEscapingByref()); + } + Record.push_back(D->getLinkageInternal()); + + if (D->getInit()) { + Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); + Record.AddStmt(D->getInit()); + } else { + Record.push_back(0); + } + + if (D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) { + ASTContext::BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D); + Record.AddStmt(Init.getCopyExpr()); + if (Init.getCopyExpr()) + Record.push_back(Init.canThrow()); + } + + if (D->getStorageDuration() == SD_Static) { + bool ModulesCodegen = false; + if (Writer.WritingModule && + !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() && + !isa<VarTemplateSpecializationDecl>(D)) { + // When building a C++ Modules TS module interface unit, a strong + // definition in the module interface is provided by the compilation of + // that module interface unit, not by its users. (Inline variables are + // still emitted in module users.) + ModulesCodegen = + (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit && + Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal); + } + Record.push_back(ModulesCodegen); + if (ModulesCodegen) + Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D)); + } + + enum { + VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization + }; + if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { + Record.push_back(VarTemplate); + Record.AddDeclRef(TemplD); + } else if (MemberSpecializationInfo *SpecInfo + = D->getMemberSpecializationInfo()) { + Record.push_back(StaticDataMemberSpecialization); + Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); + Record.push_back(SpecInfo->getTemplateSpecializationKind()); + Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); + } else { + Record.push_back(VarNotTemplate); + } + + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->isImplicit() && + !D->isUsed(false) && + !D->isInvalidDecl() && + !D->isReferenced() && + !D->isTopLevelDeclInObjCContainer() && + D->getAccess() == AS_none && + !D->isModulePrivate() && + !needsAnonymousDeclarationNumber(D) && + D->getDeclName().getNameKind() == DeclarationName::Identifier && + !D->hasExtInfo() && + D->getFirstDecl() == D->getMostRecentDecl() && + D->getKind() == Decl::Var && + !D->isInline() && + !D->isConstexpr() && + !D->isInitCapture() && + !D->isPreviousDeclInSameBlockScope() && + !(D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) && + !D->isEscapingByref() && + D->getStorageDuration() != SD_Static && + !D->getMemberSpecializationInfo()) + AbbrevToUse = Writer.getDeclVarAbbrev(); + + Code = serialization::DECL_VAR; +} + +void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { + VisitVarDecl(D); + Code = serialization::DECL_IMPLICIT_PARAM; +} + +void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { + VisitVarDecl(D); + Record.push_back(D->isObjCMethodParameter()); + Record.push_back(D->getFunctionScopeDepth()); + Record.push_back(D->getFunctionScopeIndex()); + Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding + Record.push_back(D->isKNRPromoted()); + Record.push_back(D->hasInheritedDefaultArg()); + Record.push_back(D->hasUninstantiatedDefaultArg()); + if (D->hasUninstantiatedDefaultArg()) + Record.AddStmt(D->getUninstantiatedDefaultArg()); + Code = serialization::DECL_PARM_VAR; + + assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl + + // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here + // we dynamically check for the properties that we optimize for, but don't + // know are true of all PARM_VAR_DECLs. + if (D->getDeclContext() == D->getLexicalDeclContext() && + !D->hasAttrs() && + !D->hasExtInfo() && + !D->isImplicit() && + !D->isUsed(false) && + !D->isInvalidDecl() && + !D->isReferenced() && + D->getAccess() == AS_none && + !D->isModulePrivate() && + D->getStorageClass() == 0 && + D->getInitStyle() == VarDecl::CInit && // Can params have anything else? + D->getFunctionScopeDepth() == 0 && + D->getObjCDeclQualifier() == 0 && + !D->isKNRPromoted() && + !D->hasInheritedDefaultArg() && + D->getInit() == nullptr && + !D->hasUninstantiatedDefaultArg()) // No default expr. + AbbrevToUse = Writer.getDeclParmVarAbbrev(); + + // Check things we know are true of *every* PARM_VAR_DECL, which is more than + // just us assuming it. + assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); + assert(!D->isThisDeclarationADemotedDefinition() + && "PARM_VAR_DECL can't be demoted definition."); + assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); + assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); + assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); + assert(!D->isStaticDataMember() && + "PARM_VAR_DECL can't be static data member"); +} + +void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { + // Record the number of bindings first to simplify deserialization. + Record.push_back(D->bindings().size()); + + VisitVarDecl(D); + for (auto *B : D->bindings()) + Record.AddDeclRef(B); + Code = serialization::DECL_DECOMPOSITION; +} + +void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { + VisitValueDecl(D); + Record.AddStmt(D->getBinding()); + Code = serialization::DECL_BINDING; +} + +void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { + VisitDecl(D); + Record.AddStmt(D->getAsmString()); + Record.AddSourceLocation(D->getRParenLoc()); + Code = serialization::DECL_FILE_SCOPE_ASM; +} + +void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { + VisitDecl(D); + Code = serialization::DECL_EMPTY; +} + +void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { + VisitDecl(D); + Record.AddStmt(D->getBody()); + Record.AddTypeSourceInfo(D->getSignatureAsWritten()); + Record.push_back(D->param_size()); + for (ParmVarDecl *P : D->parameters()) + Record.AddDeclRef(P); + Record.push_back(D->isVariadic()); + Record.push_back(D->blockMissingReturnType()); + Record.push_back(D->isConversionFromLambda()); + Record.push_back(D->doesNotEscape()); + Record.push_back(D->canAvoidCopyToHeap()); + Record.push_back(D->capturesCXXThis()); + Record.push_back(D->getNumCaptures()); + for (const auto &capture : D->captures()) { + Record.AddDeclRef(capture.getVariable()); + + unsigned flags = 0; + if (capture.isByRef()) flags |= 1; + if (capture.isNested()) flags |= 2; + if (capture.hasCopyExpr()) flags |= 4; + Record.push_back(flags); + + if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); + } + + Code = serialization::DECL_BLOCK; +} + +void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { + Record.push_back(CD->getNumParams()); + VisitDecl(CD); + Record.push_back(CD->getContextParamPosition()); + Record.push_back(CD->isNothrow() ? 1 : 0); + // Body is stored by VisitCapturedStmt. + for (unsigned I = 0; I < CD->getNumParams(); ++I) + Record.AddDeclRef(CD->getParam(I)); + Code = serialization::DECL_CAPTURED; +} + +void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { + VisitDecl(D); + Record.push_back(D->getLanguage()); + Record.AddSourceLocation(D->getExternLoc()); + Record.AddSourceLocation(D->getRBraceLoc()); + Code = serialization::DECL_LINKAGE_SPEC; +} + +void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { + VisitDecl(D); + Record.AddSourceLocation(D->getRBraceLoc()); + Code = serialization::DECL_EXPORT; +} + +void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { + VisitNamedDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Code = serialization::DECL_LABEL; +} + + +void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { + VisitRedeclarable(D); + VisitNamedDecl(D); + Record.push_back(D->isInline()); + Record.AddSourceLocation(D->getBeginLoc()); + Record.AddSourceLocation(D->getRBraceLoc()); + + if (D->isOriginalNamespace()) + Record.AddDeclRef(D->getAnonymousNamespace()); + Code = serialization::DECL_NAMESPACE; + + if (Writer.hasChain() && D->isAnonymousNamespace() && + D == D->getMostRecentDecl()) { + // This is a most recent reopening of the anonymous namespace. If its parent + // is in a previous PCH (or is the TU), mark that parent for update, because + // the original namespace always points to the latest re-opening of its + // anonymous namespace. + Decl *Parent = cast<Decl>( + D->getParent()->getRedeclContext()->getPrimaryContext()); + if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { + Writer.DeclUpdates[Parent].push_back( + ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); + } + } +} + +void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { + VisitRedeclarable(D); + VisitNamedDecl(D); + Record.AddSourceLocation(D->getNamespaceLoc()); + Record.AddSourceLocation(D->getTargetNameLoc()); + Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); + Record.AddDeclRef(D->getNamespace()); + Code = serialization::DECL_NAMESPACE_ALIAS; +} + +void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { + VisitNamedDecl(D); + Record.AddSourceLocation(D->getUsingLoc()); + Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); + Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); + Record.AddDeclRef(D->FirstUsingShadow.getPointer()); + Record.push_back(D->hasTypename()); + Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); + Code = serialization::DECL_USING; +} + +void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { + Record.push_back(D->NumExpansions); + VisitNamedDecl(D); + Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); + for (auto *E : D->expansions()) + Record.AddDeclRef(E); + Code = serialization::DECL_USING_PACK; +} + +void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { + VisitRedeclarable(D); + VisitNamedDecl(D); + Record.AddDeclRef(D->getTargetDecl()); + Record.push_back(D->getIdentifierNamespace()); + Record.AddDeclRef(D->UsingOrNextShadow); + Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); + Code = serialization::DECL_USING_SHADOW; +} + +void ASTDeclWriter::VisitConstructorUsingShadowDecl( + ConstructorUsingShadowDecl *D) { + VisitUsingShadowDecl(D); + Record.AddDeclRef(D->NominatedBaseClassShadowDecl); + Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); + Record.push_back(D->IsVirtual); + Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; +} + +void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { + VisitNamedDecl(D); + Record.AddSourceLocation(D->getUsingLoc()); + Record.AddSourceLocation(D->getNamespaceKeyLocation()); + Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); + Record.AddDeclRef(D->getNominatedNamespace()); + Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); + Code = serialization::DECL_USING_DIRECTIVE; +} + +void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { + VisitValueDecl(D); + Record.AddSourceLocation(D->getUsingLoc()); + Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); + Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); + Record.AddSourceLocation(D->getEllipsisLoc()); + Code = serialization::DECL_UNRESOLVED_USING_VALUE; +} + +void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( + UnresolvedUsingTypenameDecl *D) { + VisitTypeDecl(D); + Record.AddSourceLocation(D->getTypenameLoc()); + Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); + Record.AddSourceLocation(D->getEllipsisLoc()); + Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; +} + +void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { + VisitRecordDecl(D); + + enum { + CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization + }; + if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { + Record.push_back(CXXRecTemplate); + Record.AddDeclRef(TemplD); + } else if (MemberSpecializationInfo *MSInfo + = D->getMemberSpecializationInfo()) { + Record.push_back(CXXRecMemberSpecialization); + Record.AddDeclRef(MSInfo->getInstantiatedFrom()); + Record.push_back(MSInfo->getTemplateSpecializationKind()); + Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); + } else { + Record.push_back(CXXRecNotTemplate); + } + + Record.push_back(D->isThisDeclarationADefinition()); + if (D->isThisDeclarationADefinition()) + Record.AddCXXDefinitionData(D); + + // Store (what we currently believe to be) the key function to avoid + // deserializing every method so we can compute it. + if (D->isCompleteDefinition()) + Record.AddDeclRef(Context.getCurrentKeyFunction(D)); + + Code = serialization::DECL_CXX_RECORD; +} + +void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { + VisitFunctionDecl(D); + if (D->isCanonicalDecl()) { + Record.push_back(D->size_overridden_methods()); + for (const CXXMethodDecl *MD : D->overridden_methods()) + Record.AddDeclRef(MD); + } else { + // We only need to record overridden methods once for the canonical decl. + Record.push_back(0); + } + + if (D->getDeclContext() == D->getLexicalDeclContext() && + D->getFirstDecl() == D->getMostRecentDecl() && + !D->isInvalidDecl() && + !D->hasAttrs() && + !D->isTopLevelDeclInObjCContainer() && + D->getDeclName().getNameKind() == DeclarationName::Identifier && + !D->hasExtInfo() && + !D->hasInheritedPrototype() && + D->hasWrittenPrototype()) + AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); + + Code = serialization::DECL_CXX_METHOD; +} + +void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { + Record.push_back(D->getTraillingAllocKind()); + addExplicitSpecifier(D->getExplicitSpecifier(), Record); + if (auto Inherited = D->getInheritedConstructor()) { + Record.AddDeclRef(Inherited.getShadowDecl()); + Record.AddDeclRef(Inherited.getConstructor()); + } + + VisitCXXMethodDecl(D); + Code = serialization::DECL_CXX_CONSTRUCTOR; +} + +void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { + VisitCXXMethodDecl(D); + + Record.AddDeclRef(D->getOperatorDelete()); + if (D->getOperatorDelete()) + Record.AddStmt(D->getOperatorDeleteThisArg()); + + Code = serialization::DECL_CXX_DESTRUCTOR; +} + +void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { + addExplicitSpecifier(D->getExplicitSpecifier(), Record); + VisitCXXMethodDecl(D); + Code = serialization::DECL_CXX_CONVERSION; +} + +void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { + VisitDecl(D); + Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); + ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); + Record.push_back(!IdentifierLocs.empty()); + if (IdentifierLocs.empty()) { + Record.AddSourceLocation(D->getEndLoc()); + Record.push_back(1); + } else { + for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) + Record.AddSourceLocation(IdentifierLocs[I]); + Record.push_back(IdentifierLocs.size()); + } + // Note: the number of source locations must always be the last element in + // the record. + Code = serialization::DECL_IMPORT; +} + +void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { + VisitDecl(D); + Record.AddSourceLocation(D->getColonLoc()); + Code = serialization::DECL_ACCESS_SPEC; +} + +void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { + // Record the number of friend type template parameter lists here + // so as to simplify memory allocation during deserialization. + Record.push_back(D->NumTPLists); + VisitDecl(D); + bool hasFriendDecl = D->Friend.is<NamedDecl*>(); + Record.push_back(hasFriendDecl); + if (hasFriendDecl) + Record.AddDeclRef(D->getFriendDecl()); + else + Record.AddTypeSourceInfo(D->getFriendType()); + for (unsigned i = 0; i < D->NumTPLists; ++i) + Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); + Record.AddDeclRef(D->getNextFriend()); + Record.push_back(D->UnsupportedFriend); + Record.AddSourceLocation(D->FriendLoc); + Code = serialization::DECL_FRIEND; +} + +void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { + VisitDecl(D); + Record.push_back(D->getNumTemplateParameters()); + for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) + Record.AddTemplateParameterList(D->getTemplateParameterList(i)); + Record.push_back(D->getFriendDecl() != nullptr); + if (D->getFriendDecl()) + Record.AddDeclRef(D->getFriendDecl()); + else + Record.AddTypeSourceInfo(D->getFriendType()); + Record.AddSourceLocation(D->getFriendLoc()); + Code = serialization::DECL_FRIEND_TEMPLATE; +} + +void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { + VisitNamedDecl(D); + + Record.AddDeclRef(D->getTemplatedDecl()); + Record.AddTemplateParameterList(D->getTemplateParameters()); +} + +void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) { + VisitTemplateDecl(D); + Record.AddStmt(D->getConstraintExpr()); + Code = serialization::DECL_CONCEPT; +} + +void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { + VisitRedeclarable(D); + + // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that + // getCommonPtr() can be used while this is still initializing. + if (D->isFirstDecl()) { + // This declaration owns the 'common' pointer, so serialize that data now. + Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); + if (D->getInstantiatedFromMemberTemplate()) + Record.push_back(D->isMemberSpecialization()); + } + + VisitTemplateDecl(D); + Record.push_back(D->getIdentifierNamespace()); +} + +void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + + if (D->isFirstDecl()) + AddTemplateSpecializations(D); + Code = serialization::DECL_CLASS_TEMPLATE; +} + +void ASTDeclWriter::VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D) { + RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); + + VisitCXXRecordDecl(D); + + llvm::PointerUnion<ClassTemplateDecl *, + ClassTemplatePartialSpecializationDecl *> InstFrom + = D->getSpecializedTemplateOrPartial(); + if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { + Record.AddDeclRef(InstFromD); + } else { + Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); + Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); + } + + Record.AddTemplateArgumentList(&D->getTemplateArgs()); + Record.AddSourceLocation(D->getPointOfInstantiation()); + Record.push_back(D->getSpecializationKind()); + Record.push_back(D->isCanonicalDecl()); + + if (D->isCanonicalDecl()) { + // When reading, we'll add it to the folding set of the following template. + Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); + } + + // Explicit info. + Record.AddTypeSourceInfo(D->getTypeAsWritten()); + if (D->getTypeAsWritten()) { + Record.AddSourceLocation(D->getExternLoc()); + Record.AddSourceLocation(D->getTemplateKeywordLoc()); + } + + Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; +} + +void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( + ClassTemplatePartialSpecializationDecl *D) { + VisitClassTemplateSpecializationDecl(D); + + Record.AddTemplateParameterList(D->getTemplateParameters()); + Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); + + // These are read/set from/to the first declaration. + if (D->getPreviousDecl() == nullptr) { + Record.AddDeclRef(D->getInstantiatedFromMember()); + Record.push_back(D->isMemberSpecialization()); + } + + Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; +} + +void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + + if (D->isFirstDecl()) + AddTemplateSpecializations(D); + Code = serialization::DECL_VAR_TEMPLATE; +} + +void ASTDeclWriter::VisitVarTemplateSpecializationDecl( + VarTemplateSpecializationDecl *D) { + RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); + + VisitVarDecl(D); + + llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> + InstFrom = D->getSpecializedTemplateOrPartial(); + if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { + Record.AddDeclRef(InstFromD); + } else { + Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); + Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); + } + + // Explicit info. + Record.AddTypeSourceInfo(D->getTypeAsWritten()); + if (D->getTypeAsWritten()) { + Record.AddSourceLocation(D->getExternLoc()); + Record.AddSourceLocation(D->getTemplateKeywordLoc()); + } + + Record.AddTemplateArgumentList(&D->getTemplateArgs()); + Record.AddSourceLocation(D->getPointOfInstantiation()); + Record.push_back(D->getSpecializationKind()); + Record.push_back(D->IsCompleteDefinition); + Record.push_back(D->isCanonicalDecl()); + + if (D->isCanonicalDecl()) { + // When reading, we'll add it to the folding set of the following template. + Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); + } + + Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; +} + +void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( + VarTemplatePartialSpecializationDecl *D) { + VisitVarTemplateSpecializationDecl(D); + + Record.AddTemplateParameterList(D->getTemplateParameters()); + Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); + + // These are read/set from/to the first declaration. + if (D->getPreviousDecl() == nullptr) { + Record.AddDeclRef(D->getInstantiatedFromMember()); + Record.push_back(D->isMemberSpecialization()); + } + + Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; +} + +void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( + ClassScopeFunctionSpecializationDecl *D) { + VisitDecl(D); + Record.AddDeclRef(D->getSpecialization()); + Record.push_back(D->hasExplicitTemplateArgs()); + if (D->hasExplicitTemplateArgs()) + Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); + Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; +} + + +void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + + if (D->isFirstDecl()) + AddTemplateSpecializations(D); + Code = serialization::DECL_FUNCTION_TEMPLATE; +} + +void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { + VisitTypeDecl(D); + + Record.push_back(D->wasDeclaredWithTypename()); + + bool OwnsDefaultArg = D->hasDefaultArgument() && + !D->defaultArgumentWasInherited(); + Record.push_back(OwnsDefaultArg); + if (OwnsDefaultArg) + Record.AddTypeSourceInfo(D->getDefaultArgumentInfo()); + + Code = serialization::DECL_TEMPLATE_TYPE_PARM; +} + +void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { + // For an expanded parameter pack, record the number of expansion types here + // so that it's easier for deserialization to allocate the right amount of + // memory. + if (D->isExpandedParameterPack()) + Record.push_back(D->getNumExpansionTypes()); + + VisitDeclaratorDecl(D); + // TemplateParmPosition. + Record.push_back(D->getDepth()); + Record.push_back(D->getPosition()); + + if (D->isExpandedParameterPack()) { + for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { + Record.AddTypeRef(D->getExpansionType(I)); + Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); + } + + Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; + } else { + // Rest of NonTypeTemplateParmDecl. + Record.push_back(D->isParameterPack()); + bool OwnsDefaultArg = D->hasDefaultArgument() && + !D->defaultArgumentWasInherited(); + Record.push_back(OwnsDefaultArg); + if (OwnsDefaultArg) + Record.AddStmt(D->getDefaultArgument()); + Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; + } +} + +void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { + // For an expanded parameter pack, record the number of expansion types here + // so that it's easier for deserialization to allocate the right amount of + // memory. + if (D->isExpandedParameterPack()) + Record.push_back(D->getNumExpansionTemplateParameters()); + + VisitTemplateDecl(D); + // TemplateParmPosition. + Record.push_back(D->getDepth()); + Record.push_back(D->getPosition()); + + if (D->isExpandedParameterPack()) { + for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); + I != N; ++I) + Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); + Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; + } else { + // Rest of TemplateTemplateParmDecl. + Record.push_back(D->isParameterPack()); + bool OwnsDefaultArg = D->hasDefaultArgument() && + !D->defaultArgumentWasInherited(); + Record.push_back(OwnsDefaultArg); + if (OwnsDefaultArg) + Record.AddTemplateArgumentLoc(D->getDefaultArgument()); + Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; + } +} + +void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; +} + +void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { + VisitDecl(D); + Record.AddStmt(D->getAssertExpr()); + Record.push_back(D->isFailed()); + Record.AddStmt(D->getMessage()); + Record.AddSourceLocation(D->getRParenLoc()); + Code = serialization::DECL_STATIC_ASSERT; +} + +/// Emit the DeclContext part of a declaration context decl. +void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { + Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC)); + Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC)); +} + +const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { + assert(IsLocalDecl(D) && "expected a local declaration"); + + const Decl *Canon = D->getCanonicalDecl(); + if (IsLocalDecl(Canon)) + return Canon; + + const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; + if (CacheEntry) + return CacheEntry; + + for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) + if (IsLocalDecl(Redecl)) + D = Redecl; + return CacheEntry = D; +} + +template <typename T> +void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { + T *First = D->getFirstDecl(); + T *MostRecent = First->getMostRecentDecl(); + T *DAsT = static_cast<T *>(D); + if (MostRecent != First) { + assert(isRedeclarableDeclKind(DAsT->getKind()) && + "Not considered redeclarable?"); + + Record.AddDeclRef(First); + + // Write out a list of local redeclarations of this declaration if it's the + // first local declaration in the chain. + const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); + if (DAsT == FirstLocal) { + // Emit a list of all imported first declarations so that we can be sure + // that all redeclarations visible to this module are before D in the + // redecl chain. + unsigned I = Record.size(); + Record.push_back(0); + if (Writer.Chain) + AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); + // This is the number of imported first declarations + 1. + Record[I] = Record.size() - I; + + // Collect the set of local redeclarations of this declaration, from + // newest to oldest. + ASTWriter::RecordData LocalRedecls; + ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); + for (const Decl *Prev = FirstLocal->getMostRecentDecl(); + Prev != FirstLocal; Prev = Prev->getPreviousDecl()) + if (!Prev->isFromASTFile()) + LocalRedeclWriter.AddDeclRef(Prev); + + // If we have any redecls, write them now as a separate record preceding + // the declaration itself. + if (LocalRedecls.empty()) + Record.push_back(0); + else + Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); + } else { + Record.push_back(0); + Record.AddDeclRef(FirstLocal); + } + + // Make sure that we serialize both the previous and the most-recent + // declarations, which (transitively) ensures that all declarations in the + // chain get serialized. + // + // FIXME: This is not correct; when we reach an imported declaration we + // won't emit its previous declaration. + (void)Writer.GetDeclRef(D->getPreviousDecl()); + (void)Writer.GetDeclRef(MostRecent); + } else { + // We use the sentinel value 0 to indicate an only declaration. + Record.push_back(0); + } +} + +void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { + Record.push_back(D->varlist_size()); + VisitDecl(D); + for (auto *I : D->varlists()) + Record.AddStmt(I); + Code = serialization::DECL_OMP_THREADPRIVATE; +} + +void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) { + Record.push_back(D->varlist_size()); + Record.push_back(D->clauselist_size()); + VisitDecl(D); + for (auto *I : D->varlists()) + Record.AddStmt(I); + OMPClauseWriter ClauseWriter(Record); + for (OMPClause *C : D->clauselists()) + ClauseWriter.writeClause(C); + Code = serialization::DECL_OMP_ALLOCATE; +} + +void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) { + Record.push_back(D->clauselist_size()); + VisitDecl(D); + OMPClauseWriter ClauseWriter(Record); + for (OMPClause *C : D->clauselists()) + ClauseWriter.writeClause(C); + Code = serialization::DECL_OMP_REQUIRES; +} + +void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { + VisitValueDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Record.AddStmt(D->getCombinerIn()); + Record.AddStmt(D->getCombinerOut()); + Record.AddStmt(D->getCombiner()); + Record.AddStmt(D->getInitOrig()); + Record.AddStmt(D->getInitPriv()); + Record.AddStmt(D->getInitializer()); + Record.push_back(D->getInitializerKind()); + Record.AddDeclRef(D->getPrevDeclInScope()); + Code = serialization::DECL_OMP_DECLARE_REDUCTION; +} + +void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) { + Record.push_back(D->clauselist_size()); + VisitValueDecl(D); + Record.AddSourceLocation(D->getBeginLoc()); + Record.AddStmt(D->getMapperVarRef()); + Record.AddDeclarationName(D->getVarName()); + Record.AddDeclRef(D->getPrevDeclInScope()); + OMPClauseWriter ClauseWriter(Record); + for (OMPClause *C : D->clauselists()) + ClauseWriter.writeClause(C); + Code = serialization::DECL_OMP_DECLARE_MAPPER; +} + +void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { + VisitVarDecl(D); + Code = serialization::DECL_OMP_CAPTUREDEXPR; +} + +//===----------------------------------------------------------------------===// +// ASTWriter Implementation +//===----------------------------------------------------------------------===// + +void ASTWriter::WriteDeclAbbrevs() { + using namespace llvm; + + std::shared_ptr<BitCodeAbbrev> Abv; + + // Abbreviation for DECL_FIELD + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed + Abv->Add(BitCodeAbbrevOp(0)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // ValueDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + // DeclaratorDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc + Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType + // FieldDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable + Abv->Add(BitCodeAbbrevOp(0)); // InitStyle + // Type Source Info + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc + DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_OBJC_IVAR + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed + Abv->Add(BitCodeAbbrevOp(0)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // ValueDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + // DeclaratorDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc + Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType + // FieldDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable + Abv->Add(BitCodeAbbrevOp(0)); // InitStyle + // ObjC Ivar + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize + // Type Source Info + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc + DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_ENUM + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); + // Redeclarable + Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed + Abv->Add(BitCodeAbbrevOp(0)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // TypeDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref + // TagDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation + Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind + // EnumDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum + // DC + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset + DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_RECORD + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); + // Redeclarable + Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed + Abv->Add(BitCodeAbbrevOp(0)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // TypeDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref + // TagDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation + Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind + // RecordDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember + + // isNonTrivialToPrimitiveDefaultInitialize + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // isNonTrivialToPrimitiveCopy + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // isNonTrivialToPrimitiveDestroy + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // hasNonTrivialToPrimitiveDefaultInitializeCUnion + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // hasNonTrivialToPrimitiveDestructCUnion + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // hasNonTrivialToPrimitiveCopyCUnion + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // isParamDestroyedInCallee + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); + // getArgPassingRestrictions + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); + + // DC + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset + DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_PARM_VAR + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); + // Redeclarable + Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed + Abv->Add(BitCodeAbbrevOp(0)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // ValueDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + // DeclaratorDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc + Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType + // VarDecl + Abv->Add(BitCodeAbbrevOp(0)); // SClass + Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec + Abv->Add(BitCodeAbbrevOp(0)); // InitStyle + Abv->Add(BitCodeAbbrevOp(0)); // ARCPseudoStrong + Abv->Add(BitCodeAbbrevOp(0)); // Linkage + Abv->Add(BitCodeAbbrevOp(0)); // HasInit + Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo + // ParmVarDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter + Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex + Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier + Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted + Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg + Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg + // Type Source Info + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc + DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_TYPEDEF + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); + // Redeclarable + Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // TypeDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref + // TypedefDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc + DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_VAR + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); + // Redeclarable + Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed + Abv->Add(BitCodeAbbrevOp(0)); // isReferenced + Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer + Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier + Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // ValueDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + // DeclaratorDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc + Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType + // VarDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isObjCForDecl + Abv->Add(BitCodeAbbrevOp(0)); // isInline + Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified + Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr + Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture + Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope + Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind + Abv->Add(BitCodeAbbrevOp(0)); // EscapingByref + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // IsInitICE (local) + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum) + // Type Source Info + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc + DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for DECL_CXX_METHOD + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); + // RedeclarableDecl + Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl + // Decl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext + Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext + Abv->Add(BitCodeAbbrevOp(0)); // Invalid + Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced + Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID + // NamedDecl + Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier + Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber + // ValueDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + // DeclaratorDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart + Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType + // FunctionDecl + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure + Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto + Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // TrivialForCall + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind + // This Array slurps the rest of the record. Fortunately we want to encode + // (nearly) all the remaining (variable number of) fields in the same way. + // + // This is the function template information if any, then + // NumParams and Params[] from FunctionDecl, and + // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. + // + // Add an AbbrevOp for 'size then elements' and use it here. + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); + DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for EXPR_DECL_REF + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); + //Stmt + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsOMPStructuredBlock + // Expr + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind + //DeclRefExpr + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates + Abv->Add(BitCodeAbbrevOp(0)); // RefersToEnclosingVariableOrCapture + Abv->Add(BitCodeAbbrevOp(0)); // NonOdrUseReason + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location + DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for EXPR_INTEGER_LITERAL + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); + //Stmt + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsOMPStructuredBlock + // Expr + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind + //Integer Literal + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location + Abv->Add(BitCodeAbbrevOp(32)); // Bit Width + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value + IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for EXPR_CHARACTER_LITERAL + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); + //Stmt + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsOMPStructuredBlock + // Expr + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind + //Character Literal + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind + CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + // Abbreviation for EXPR_IMPLICIT_CAST + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); + // Stmt + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsOMPStructuredBlock + // Expr + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind + // CastExpr + Abv->Add(BitCodeAbbrevOp(0)); // PathSize + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PartOfExplicitCast + // ImplicitCastExpr + ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); + DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); + + Abv = std::make_shared<BitCodeAbbrev>(); + Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); + Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); + DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); +} + +/// isRequiredDecl - Check if this is a "required" Decl, which must be seen by +/// consumers of the AST. +/// +/// Such decls will always be deserialized from the AST file, so we would like +/// this to be as restrictive as possible. Currently the predicate is driven by +/// code generation requirements, if other clients have a different notion of +/// what is "required" then we may have to consider an alternate scheme where +/// clients can iterate over the top-level decls and get information on them, +/// without necessary deserializing them. We could explicitly require such +/// clients to use a separate API call to "realize" the decl. This should be +/// relatively painless since they would presumably only do it for top-level +/// decls. +static bool isRequiredDecl(const Decl *D, ASTContext &Context, + bool WritingModule) { + // An ObjCMethodDecl is never considered as "required" because its + // implementation container always is. + + // File scoped assembly or obj-c or OMP declare target implementation must be + // seen. + if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D)) + return true; + + if (WritingModule && isPartOfPerModuleInitializer(D)) { + // These declarations are part of the module initializer, and are emitted + // if and when the module is imported, rather than being emitted eagerly. + return false; + } + + return Context.DeclMustBeEmitted(D); +} + +void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { + PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(), + "serializing"); + + // Determine the ID for this declaration. + serialization::DeclID ID; + assert(!D->isFromASTFile() && "should not be emitting imported decl"); + serialization::DeclID &IDR = DeclIDs[D]; + if (IDR == 0) + IDR = NextDeclID++; + + ID = IDR; + + assert(ID >= FirstDeclID && "invalid decl ID"); + + RecordData Record; + ASTDeclWriter W(*this, Context, Record); + + // Build a record for this declaration + W.Visit(D); + + // Emit this declaration to the bitstream. + uint64_t Offset = W.Emit(D); + + // Record the offset for this declaration + SourceLocation Loc = D->getLocation(); + unsigned Index = ID - FirstDeclID; + if (DeclOffsets.size() == Index) + DeclOffsets.push_back(DeclOffset(Loc, Offset)); + else if (DeclOffsets.size() < Index) { + // FIXME: Can/should this happen? + DeclOffsets.resize(Index+1); + DeclOffsets[Index].setLocation(Loc); + DeclOffsets[Index].BitOffset = Offset; + } else { + llvm_unreachable("declarations should be emitted in ID order"); + } + + SourceManager &SM = Context.getSourceManager(); + if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) + associateDeclWithFile(D, ID); + + // Note declarations that should be deserialized eagerly so that we can add + // them to a record in the AST file later. + if (isRequiredDecl(D, Context, WritingModule)) + EagerlyDeserializedDecls.push_back(ID); +} + +void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { + // Switch case IDs are per function body. + Writer->ClearSwitchCaseIDs(); + + assert(FD->doesThisDeclarationHaveABody()); + bool ModulesCodegen = false; + if (Writer->WritingModule && !FD->isDependentContext()) { + Optional<GVALinkage> Linkage; + if (Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) { + // When building a C++ Modules TS module interface unit, a strong + // definition in the module interface is provided by the compilation of + // that module interface unit, not by its users. (Inline functions are + // still emitted in module users.) + Linkage = Writer->Context->GetGVALinkageForFunction(FD); + ModulesCodegen = *Linkage == GVA_StrongExternal; + } + if (Writer->Context->getLangOpts().ModulesCodegen) { + // Under -fmodules-codegen, codegen is performed for all non-internal, + // non-always_inline functions. + if (!FD->hasAttr<AlwaysInlineAttr>()) { + if (!Linkage) + Linkage = Writer->Context->GetGVALinkageForFunction(FD); + ModulesCodegen = *Linkage != GVA_Internal; + } + } + } + Record->push_back(ModulesCodegen); + if (ModulesCodegen) + Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD)); + if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { + Record->push_back(CD->getNumCtorInitializers()); + if (CD->getNumCtorInitializers()) + AddCXXCtorInitializers( + llvm::makeArrayRef(CD->init_begin(), CD->init_end())); + } + AddStmt(FD->getBody()); +} |