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llvm / llvm-project / clang / refs/heads/main / . / lib / Serialization / ASTWriterDecl.cpp
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//===--- 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/Attr.h"
#include "clang/AST/DeclCXX.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/ASTRecordWriter.h"
#include "llvm/Bitstream/BitstreamWriter.h"
#include "llvm/Support/ErrorHandling.h"
#include <optional>
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;
bool GeneratingReducedBMI = false;
public:
ASTDeclWriter(ASTWriter &Writer, ASTContext &Context,
ASTWriter::RecordDataImpl &Record, bool GeneratingReducedBMI)
: Writer(Writer), Context(Context), Record(Writer, Record),
Code((serialization::DeclCode)0), AbbrevToUse(0),
GeneratingReducedBMI(GeneratingReducedBMI) {}
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 VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *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 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 VisitMSGuidDecl(MSGuidDecl *D);
void VisitUnnamedGlobalConstantDecl(UnnamedGlobalConstantDecl *D);
void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *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 VisitImplicitConceptSpecializationDecl(
ImplicitConceptSpecializationDecl *D);
void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *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 VisitUsingEnumDecl(UsingEnumDecl *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 VisitTopLevelStmtDecl(TopLevelStmtDecl *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 VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
void VisitDeclContext(DeclContext *DC);
template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
void VisitHLSLBufferDecl(HLSLBufferDecl *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 std::nullopt;
}
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<GlobalDeclID> LazySpecializations;
if (auto *LS = Common->LazySpecializations)
LazySpecializations = llvm::ArrayRef(LS + 1, LS[0].get());
// 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(
DeclIDIterator<GlobalDeclID, DeclID>(LazySpecializations.begin()),
DeclIDIterator<GlobalDeclID, DeclID>(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));
}
};
}
bool clang::CanElideDeclDef(const Decl *D) {
if (auto *FD = dyn_cast<FunctionDecl>(D)) {
if (FD->isInlined() || FD->isConstexpr())
return false;
if (FD->isDependentContext())
return false;
if (FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
return false;
}
if (auto *VD = dyn_cast<VarDecl>(D)) {
if (!VD->getDeclContext()->getRedeclContext()->isFileContext() ||
VD->isInline() || VD->isConstexpr() || isa<ParmVarDecl>(VD) ||
// Constant initialized variable may not affect the ABI, but they
// may be used in constant evaluation in the frontend, so we have
// to remain them.
VD->hasConstantInitialization())
return false;
if (VD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
return false;
}
return true;
}
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 (auto *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 (auto *FD = dyn_cast<FunctionDecl>(D)) {
if (!GeneratingReducedBMI || !CanElideDeclDef(FD)) {
Record.push_back(FD->doesThisDeclarationHaveABody());
if (FD->doesThisDeclarationHaveABody())
Record.AddFunctionDefinition(FD);
} else
Record.push_back(0);
}
// Similar to FunctionDecls, handle VarDecl's initializer here and write it
// after all other Stmts/Exprs. We will not read the initializer until after
// we have finished recursive deserialization, because it can recursively
// refer back to the variable.
if (auto *VD = dyn_cast<VarDecl>(D)) {
if (!GeneratingReducedBMI || !CanElideDeclDef(VD))
Record.AddVarDeclInit(VD);
else
Record.push_back(0);
}
// And similarly for FieldDecls. We already serialized whether there is a
// default member initializer.
if (auto *FD = dyn_cast<FieldDecl>(D)) {
if (FD->hasInClassInitializer()) {
if (Expr *Init = FD->getInClassInitializer()) {
Record.push_back(1);
Record.AddStmt(Init);
} else {
Record.push_back(0);
// Initializer has not been instantiated yet.
}
}
}
// 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 (auto *DC = dyn_cast<DeclContext>(D))
VisitDeclContext(DC);
}
void ASTDeclWriter::VisitDecl(Decl *D) {
BitsPacker DeclBits;
// The order matters here. It will be better to put the bit with higher
// probability to be 0 in the end of the bits.
//
// Since we're using VBR6 format to store it.
// It will be pretty effient if all the higher bits are 0.
// For example, if we need to pack 8 bits into a value and the stored value
// is 0xf0, the actual stored value will be 0b000111'110000, which takes 12
// bits actually. However, if we changed the order to be 0x0f, then we can
// store it as 0b001111, which takes 6 bits only now.
DeclBits.addBits((uint64_t)D->getModuleOwnershipKind(), /*BitWidth=*/3);
DeclBits.addBit(D->isReferenced());
DeclBits.addBit(D->isUsed(false));
DeclBits.addBits(D->getAccess(), /*BitWidth=*/2);
DeclBits.addBit(D->isImplicit());
DeclBits.addBit(D->getDeclContext() != D->getLexicalDeclContext());
DeclBits.addBit(D->hasAttrs());
DeclBits.addBit(D->isTopLevelDeclInObjCContainer());
DeclBits.addBit(D->isInvalidDecl());
Record.push_back(DeclBits);
Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()));
if (D->getDeclContext() != D->getLexicalDeclContext())
Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()));
if (D->hasAttrs())
Record.AddAttributes(D->getAttrs());
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) {
static_assert(DeclContext::NumTagDeclBits == 23,
"You need to update the serializer after you change the "
"TagDeclBits");
VisitRedeclarable(D);
VisitTypeDecl(D);
Record.push_back(D->getIdentifierNamespace());
BitsPacker TagDeclBits;
TagDeclBits.addBits(llvm::to_underlying(D->getTagKind()), /*BitWidth=*/3);
TagDeclBits.addBit(!isa<CXXRecordDecl>(D) ? D->isCompleteDefinition() : 0);
TagDeclBits.addBit(D->isEmbeddedInDeclarator());
TagDeclBits.addBit(D->isFreeStanding());
TagDeclBits.addBit(D->isCompleteDefinitionRequired());
TagDeclBits.addBits(
D->hasExtInfo() ? 1 : (D->getTypedefNameForAnonDecl() ? 2 : 0),
/*BitWidth=*/2);
Record.push_back(TagDeclBits);
Record.AddSourceRange(D->getBraceRange());
if (D->hasExtInfo()) {
Record.AddQualifierInfo(*D->getExtInfo());
} else if (auto *TD = D->getTypedefNameForAnonDecl()) {
Record.AddDeclRef(TD);
Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo());
}
}
void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
static_assert(DeclContext::NumEnumDeclBits == 43,
"You need to update the serializer after you change the "
"EnumDeclBits");
VisitTagDecl(D);
Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo());
if (!D->getIntegerTypeSourceInfo())
Record.AddTypeRef(D->getIntegerType());
Record.AddTypeRef(D->getPromotionType());
BitsPacker EnumDeclBits;
EnumDeclBits.addBits(D->getNumPositiveBits(), /*BitWidth=*/8);
EnumDeclBits.addBits(D->getNumNegativeBits(), /*BitWidth=*/8);
bool ShouldSkipCheckingODR = shouldSkipCheckingODR(D);
EnumDeclBits.addBit(ShouldSkipCheckingODR);
EnumDeclBits.addBit(D->isScoped());
EnumDeclBits.addBit(D->isScopedUsingClassTag());
EnumDeclBits.addBit(D->isFixed());
Record.push_back(EnumDeclBits);
// We only perform ODR checks for decls not in GMF.
if (!ShouldSkipCheckingODR)
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->isInvalidDecl() && !D->isImplicit() && !D->hasExtInfo() &&
!D->getTypedefNameForAnonDecl() &&
D->getFirstDecl() == D->getMostRecentDecl() &&
!D->isTopLevelDeclInObjCContainer() &&
!CXXRecordDecl::classofKind(D->getKind()) &&
!D->getIntegerTypeSourceInfo() && !D->getMemberSpecializationInfo() &&
!needsAnonymousDeclarationNumber(D) && !shouldSkipCheckingODR(D) &&
D->getDeclName().getNameKind() == DeclarationName::Identifier)
AbbrevToUse = Writer.getDeclEnumAbbrev();
Code = serialization::DECL_ENUM;
}
void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
static_assert(DeclContext::NumRecordDeclBits == 64,
"You need to update the serializer after you change the "
"RecordDeclBits");
VisitTagDecl(D);
BitsPacker RecordDeclBits;
RecordDeclBits.addBit(D->hasFlexibleArrayMember());
RecordDeclBits.addBit(D->isAnonymousStructOrUnion());
RecordDeclBits.addBit(D->hasObjectMember());
RecordDeclBits.addBit(D->hasVolatileMember());
RecordDeclBits.addBit(D->isNonTrivialToPrimitiveDefaultInitialize());
RecordDeclBits.addBit(D->isNonTrivialToPrimitiveCopy());
RecordDeclBits.addBit(D->isNonTrivialToPrimitiveDestroy());
RecordDeclBits.addBit(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion());
RecordDeclBits.addBit(D->hasNonTrivialToPrimitiveDestructCUnion());
RecordDeclBits.addBit(D->hasNonTrivialToPrimitiveCopyCUnion());
RecordDeclBits.addBit(D->isParamDestroyedInCallee());
RecordDeclBits.addBits(llvm::to_underlying(D->getArgPassingRestrictions()), 2);
Record.push_back(RecordDeclBits);
// Only compute this for C/Objective-C, in C++ this is computed as part
// of CXXRecordDecl.
if (!isa<CXXRecordDecl>(D))
Record.push_back(D->getODRHash());
if (D->getDeclContext() == D->getLexicalDeclContext() && !D->hasAttrs() &&
!D->isImplicit() && !D->isInvalidDecl() && !D->hasExtInfo() &&
!D->getTypedefNameForAnonDecl() &&
D->getFirstDecl() == D->getMostRecentDecl() &&
!D->isTopLevelDeclInObjCContainer() &&
!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()) {
DeclaratorDecl::ExtInfo *Info = D->getExtInfo();
Record.AddQualifierInfo(*Info);
Record.AddStmt(Info->TrailingRequiresClause);
}
// The location information is deferred until the end of the record.
Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType()
: QualType());
}
void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
static_assert(DeclContext::NumFunctionDeclBits == 44,
"You need to update the serializer after you change the "
"FunctionDeclBits");
VisitRedeclarable(D);
Record.push_back(D->getTemplatedKind());
switch (D->getTemplatedKind()) {
case FunctionDecl::TK_NonTemplate:
break;
case FunctionDecl::TK_DependentNonTemplate:
Record.AddDeclRef(D->getInstantiatedFromDecl());
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.AddASTTemplateArgumentListInfo(
FTSInfo->TemplateArgumentsAsWritten);
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();
// Candidates.
Record.push_back(DFTSInfo->getCandidates().size());
for (FunctionTemplateDecl *FTD : DFTSInfo->getCandidates())
Record.AddDeclRef(FTD);
// Templates args.
Record.push_back(DFTSInfo->TemplateArgumentsAsWritten != nullptr);
if (DFTSInfo->TemplateArgumentsAsWritten)
Record.AddASTTemplateArgumentListInfo(
DFTSInfo->TemplateArgumentsAsWritten);
break;
}
}
VisitDeclaratorDecl(D);
Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
Record.push_back(D->getIdentifierNamespace());
// The order matters here. It will be better to put the bit with higher
// probability to be 0 in the end of the bits. See the comments in VisitDecl
// for details.
BitsPacker FunctionDeclBits;
// FIXME: stable encoding
FunctionDeclBits.addBits(llvm::to_underlying(D->getLinkageInternal()), 3);
FunctionDeclBits.addBits((uint32_t)D->getStorageClass(), /*BitWidth=*/3);
bool ShouldSkipCheckingODR = shouldSkipCheckingODR(D);
FunctionDeclBits.addBit(ShouldSkipCheckingODR);
FunctionDeclBits.addBit(D->isInlineSpecified());
FunctionDeclBits.addBit(D->isInlined());
FunctionDeclBits.addBit(D->hasSkippedBody());
FunctionDeclBits.addBit(D->isVirtualAsWritten());
FunctionDeclBits.addBit(D->isPureVirtual());
FunctionDeclBits.addBit(D->hasInheritedPrototype());
FunctionDeclBits.addBit(D->hasWrittenPrototype());
FunctionDeclBits.addBit(D->isDeletedBit());
FunctionDeclBits.addBit(D->isTrivial());
FunctionDeclBits.addBit(D->isTrivialForCall());
FunctionDeclBits.addBit(D->isDefaulted());
FunctionDeclBits.addBit(D->isExplicitlyDefaulted());
FunctionDeclBits.addBit(D->isIneligibleOrNotSelected());
FunctionDeclBits.addBits((uint64_t)(D->getConstexprKind()), /*BitWidth=*/2);
FunctionDeclBits.addBit(D->hasImplicitReturnZero());
FunctionDeclBits.addBit(D->isMultiVersion());
FunctionDeclBits.addBit(D->isLateTemplateParsed());
FunctionDeclBits.addBit(D->FriendConstraintRefersToEnclosingTemplate());
FunctionDeclBits.addBit(D->usesSEHTry());
Record.push_back(FunctionDeclBits);
Record.AddSourceLocation(D->getEndLoc());
if (D->isExplicitlyDefaulted())
Record.AddSourceLocation(D->getDefaultLoc());
// We only perform ODR checks for decls not in GMF.
if (!ShouldSkipCheckingODR)
Record.push_back(D->getODRHash());
if (D->isDefaulted() || D->isDeletedAsWritten()) {
if (auto *FDI = D->getDefalutedOrDeletedInfo()) {
// Store both that there is an DefaultedOrDeletedInfo and whether it
// contains a DeletedMessage.
StringLiteral *DeletedMessage = FDI->getDeletedMessage();
Record.push_back(1 | (DeletedMessage ? 2 : 0));
if (DeletedMessage)
Record.AddStmt(DeletedMessage);
Record.push_back(FDI->getUnqualifiedLookups().size());
for (DeclAccessPair P : FDI->getUnqualifiedLookups()) {
Record.AddDeclRef(P.getDecl());
Record.push_back(P.getAccess());
}
} else {
Record.push_back(0);
}
}
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);
Record.AddDeclRef(D->Ctor);
VisitFunctionDecl(D);
Record.push_back(static_cast<unsigned char>(D->getDeductionCandidateKind()));
Code = serialization::DECL_CXX_DEDUCTION_GUIDE;
}
void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
static_assert(DeclContext::NumObjCMethodDeclBits == 37,
"You need to update the serializer after you change the "
"ObjCMethodDeclBits");
VisitNamedDecl(D);
// FIXME: convert to LazyStmtPtr?
// Unlike C/C++, method bodies will never be in header files.
bool HasBodyStuff = D->getBody() != 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->isSynthesizedAccessorStub());
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(llvm::to_underlying(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) {
static_assert(DeclContext::NumObjCContainerDeclBits == 64,
"You need to update the serializer after you change the "
"ObjCContainerDeclBits");
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);
Record.push_back(D->getODRHash());
// 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);
Record.push_back(D->getODRHash());
}
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::ArrayRef(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.AddDeclRef(D->getGetterMethodDecl());
Record.AddDeclRef(D->getSetterMethodDecl());
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());
Record.push_back((D->StorageKind << 1) | D->BitField);
if (D->StorageKind == FieldDecl::ISK_CapturedVLAType)
Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0));
else if (D->BitField)
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::VisitMSGuidDecl(MSGuidDecl *D) {
VisitValueDecl(D);
MSGuidDecl::Parts Parts = D->getParts();
Record.push_back(Parts.Part1);
Record.push_back(Parts.Part2);
Record.push_back(Parts.Part3);
Record.append(std::begin(Parts.Part4And5), std::end(Parts.Part4And5));
Code = serialization::DECL_MS_GUID;
}
void ASTDeclWriter::VisitUnnamedGlobalConstantDecl(
UnnamedGlobalConstantDecl *D) {
VisitValueDecl(D);
Record.AddAPValue(D->getValue());
Code = serialization::DECL_UNNAMED_GLOBAL_CONSTANT;
}
void ASTDeclWriter::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) {
VisitValueDecl(D);
Record.AddAPValue(D->getValue());
Code = serialization::DECL_TEMPLATE_PARAM_OBJECT;
}
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);
// The order matters here. It will be better to put the bit with higher
// probability to be 0 in the end of the bits. See the comments in VisitDecl
// for details.
BitsPacker VarDeclBits;
VarDeclBits.addBits(llvm::to_underlying(D->getLinkageInternal()),
/*BitWidth=*/3);
bool ModulesCodegen = false;
if (Writer.WritingModule && D->getStorageDuration() == SD_Static &&
!D->getDescribedVarTemplate()) {
// When building a C++20 module interface unit or a partition unit, a
// strong definition in the module interface is provided by the
// compilation of that unit, not by its users. (Inline variables are still
// emitted in module users.)
ModulesCodegen =
(Writer.WritingModule->isInterfaceOrPartition() ||
(D->hasAttr<DLLExportAttr>() &&
Writer.Context->getLangOpts().BuildingPCHWithObjectFile)) &&
Writer.Context->GetGVALinkageForVariable(D) >= GVA_StrongExternal;
}
VarDeclBits.addBit(ModulesCodegen);
VarDeclBits.addBits(D->getStorageClass(), /*BitWidth=*/3);
VarDeclBits.addBits(D->getTSCSpec(), /*BitWidth=*/2);
VarDeclBits.addBits(D->getInitStyle(), /*BitWidth=*/2);
VarDeclBits.addBit(D->isARCPseudoStrong());
bool HasDeducedType = false;
if (!isa<ParmVarDecl>(D)) {
VarDeclBits.addBit(D->isThisDeclarationADemotedDefinition());
VarDeclBits.addBit(D->isExceptionVariable());
VarDeclBits.addBit(D->isNRVOVariable());
VarDeclBits.addBit(D->isCXXForRangeDecl());
VarDeclBits.addBit(D->isInline());
VarDeclBits.addBit(D->isInlineSpecified());
VarDeclBits.addBit(D->isConstexpr());
VarDeclBits.addBit(D->isInitCapture());
VarDeclBits.addBit(D->isPreviousDeclInSameBlockScope());
VarDeclBits.addBit(D->isEscapingByref());
HasDeducedType = D->getType()->getContainedDeducedType();
VarDeclBits.addBit(HasDeducedType);
if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D))
VarDeclBits.addBits(llvm::to_underlying(IPD->getParameterKind()),
/*Width=*/3);
else
VarDeclBits.addBits(0, /*Width=*/3);
VarDeclBits.addBit(D->isObjCForDecl());
}
Record.push_back(VarDeclBits);
if (ModulesCodegen)
Writer.AddDeclRef(D, Writer.ModularCodegenDecls);
if (D->hasAttr<BlocksAttr>()) {
BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D);
Record.AddStmt(Init.getCopyExpr());
if (Init.getCopyExpr())
Record.push_back(Init.canThrow());
}
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->isTopLevelDeclInObjCContainer() &&
!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->isEscapingByref() && !HasDeducedType &&
D->getStorageDuration() != SD_Static && !D->getDescribedVarTemplate() &&
!D->getMemberSpecializationInfo() && !D->isObjCForDecl() &&
!isa<ImplicitParamDecl>(D) && !D->isEscapingByref())
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);
// See the implementation of `ParmVarDecl::getParameterIndex()`, which may
// exceed the size of the normal bitfield. So it may be better to not pack
// these bits.
Record.push_back(D->getFunctionScopeIndex());
BitsPacker ParmVarDeclBits;
ParmVarDeclBits.addBit(D->isObjCMethodParameter());
ParmVarDeclBits.addBits(D->getFunctionScopeDepth(), /*BitsWidth=*/7);
// FIXME: stable encoding
ParmVarDeclBits.addBits(D->getObjCDeclQualifier(), /*BitsWidth=*/7);
ParmVarDeclBits.addBit(D->isKNRPromoted());
ParmVarDeclBits.addBit(D->hasInheritedDefaultArg());
ParmVarDeclBits.addBit(D->hasUninstantiatedDefaultArg());
ParmVarDeclBits.addBit(D->getExplicitObjectParamThisLoc().isValid());
Record.push_back(ParmVarDeclBits);
if (D->hasUninstantiatedDefaultArg())
Record.AddStmt(D->getUninstantiatedDefaultArg());
if (D->getExplicitObjectParamThisLoc().isValid())
Record.AddSourceLocation(D->getExplicitObjectParamThisLoc());
Code = serialization::DECL_PARM_VAR;
// 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->getStorageClass() == 0 && !D->isInvalidDecl() &&
!D->isTopLevelDeclInObjCContainer() &&
D->getInitStyle() == VarDecl::CInit && // Can params have anything else?
D->getInit() == nullptr) // 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::VisitTopLevelStmtDecl(TopLevelStmtDecl *D) {
VisitDecl(D);
Record.AddStmt(D->getStmt());
Code = serialization::DECL_TOP_LEVEL_STMT_DECL;
}
void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) {
VisitDecl(D);
Code = serialization::DECL_EMPTY;
}
void ASTDeclWriter::VisitLifetimeExtendedTemporaryDecl(
LifetimeExtendedTemporaryDecl *D) {
VisitDecl(D);
Record.AddDeclRef(D->getExtendingDecl());
Record.AddStmt(D->getTemporaryExpr());
Record.push_back(static_cast<bool>(D->getValue()));
if (D->getValue())
Record.AddAPValue(*D->getValue());
Record.push_back(D->getManglingNumber());
Code = serialization::DECL_LIFETIME_EXTENDED_TEMPORARY;
}
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) {
static_assert(DeclContext::NumLinkageSpecDeclBits == 17,
"You need to update the serializer after you change the"
"LinkageSpecDeclBits");
VisitDecl(D);
Record.push_back(llvm::to_underlying(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);
BitsPacker NamespaceDeclBits;
NamespaceDeclBits.addBit(D->isInline());
NamespaceDeclBits.addBit(D->isNested());
Record.push_back(NamespaceDeclBits);
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::VisitUsingEnumDecl(UsingEnumDecl *D) {
VisitNamedDecl(D);
Record.AddSourceLocation(D->getUsingLoc());
Record.AddSourceLocation(D->getEnumLoc());
Record.AddTypeSourceInfo(D->getEnumType());
Record.AddDeclRef(D->FirstUsingShadow.getPointer());
Record.AddDeclRef(Context.getInstantiatedFromUsingEnumDecl(D));
Code = serialization::DECL_USING_ENUM;
}
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));
if (D->getDeclContext() == D->getLexicalDeclContext() &&
D->getFirstDecl() == D->getMostRecentDecl() && !D->hasAttrs() &&
!needsAnonymousDeclarationNumber(D) &&
D->getDeclName().getNameKind() == DeclarationName::Identifier)
AbbrevToUse = Writer.getDeclUsingShadowAbbrev();
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::VisitUnresolvedUsingIfExistsDecl(
UnresolvedUsingIfExistsDecl *D) {
VisitNamedDecl(D);
Code = serialization::DECL_UNRESOLVED_USING_IF_EXISTS;
}
void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
VisitRecordDecl(D);
enum {
CXXRecNotTemplate = 0,
CXXRecTemplate,
CXXRecMemberSpecialization,
CXXLambda
};
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 if (D->isLambda()) {
// For a lambda, we need some information early for merging.
Record.push_back(CXXLambda);
if (auto *Context = D->getLambdaContextDecl()) {
Record.AddDeclRef(Context);
Record.push_back(D->getLambdaIndexInContext());
} else {
Record.push_back(0);
}
} 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 &&
!shouldSkipCheckingODR(D) && !D->hasExtInfo() &&
!D->isExplicitlyDefaulted()) {
if (D->getTemplatedKind() == FunctionDecl::TK_NonTemplate ||
D->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate ||
D->getTemplatedKind() == FunctionDecl::TK_MemberSpecialization ||
D->getTemplatedKind() == FunctionDecl::TK_DependentNonTemplate)
AbbrevToUse = Writer.getDeclCXXMethodAbbrev(D->getTemplatedKind());
else if (D->getTemplatedKind() ==
FunctionDecl::TK_FunctionTemplateSpecialization) {
FunctionTemplateSpecializationInfo *FTSInfo =
D->getTemplateSpecializationInfo();
if (FTSInfo->TemplateArguments->size() == 1) {
const TemplateArgument &TA = FTSInfo->TemplateArguments->get(0);
if (TA.getKind() == TemplateArgument::Type &&
!FTSInfo->TemplateArgumentsAsWritten &&
!FTSInfo->getMemberSpecializationInfo())
AbbrevToUse = Writer.getDeclCXXMethodAbbrev(D->getTemplatedKind());
}
} else if (D->getTemplatedKind() ==
FunctionDecl::TK_DependentFunctionTemplateSpecialization) {
DependentFunctionTemplateSpecializationInfo *DFTSInfo =
D->getDependentSpecializationInfo();
if (!DFTSInfo->TemplateArgumentsAsWritten)
AbbrevToUse = Writer.getDeclCXXMethodAbbrev(D->getTemplatedKind());
}
}
Code = serialization::DECL_CXX_METHOD;
}
void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
static_assert(DeclContext::NumCXXConstructorDeclBits == 64,
"You need to update the serializer after you change the "
"CXXConstructorDeclBits");
Record.push_back(D->getTrailingAllocKind());
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.AddTemplateParameterList(D->getTemplateParameters());
Record.AddDeclRef(D->getTemplatedDecl());
}
void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) {
VisitTemplateDecl(D);
Record.AddStmt(D->getConstraintExpr());
Code = serialization::DECL_CONCEPT;
}
void ASTDeclWriter::VisitImplicitConceptSpecializationDecl(
ImplicitConceptSpecializationDecl *D) {
Record.push_back(D->getTemplateArguments().size());
VisitDecl(D);
for (const TemplateArgument &Arg : D->getTemplateArguments())
Record.AddTemplateArgument(Arg);
Code = serialization::DECL_IMPLICIT_CONCEPT_SPECIALIZATION;
}
void ASTDeclWriter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
Code = serialization::DECL_REQUIRES_EXPR_BODY;
}
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);
// Force emitting the corresponding deduction guide in reduced BMI mode.
// Otherwise, the deduction guide may be optimized out incorrectly.
if (Writer.isGeneratingReducedBMI()) {
auto Name = Context.DeclarationNames.getCXXDeductionGuideName(D);
for (auto *DG : D->getDeclContext()->noload_lookup(Name))
Writer.GetDeclRef(DG);
}
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) {
Record.AddTemplateParameterList(D->getTemplateParameters());
Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
VisitClassTemplateSpecializationDecl(D);
// 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);
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);
VisitVarDecl(D);
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) {
Record.AddTemplateParameterList(D->getTemplateParameters());
Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
VisitVarTemplateSpecializationDecl(D);
// 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::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
VisitRedeclarableTemplateDecl(D);
if (D->isFirstDecl())
AddTemplateSpecializations(D);
Code = serialization::DECL_FUNCTION_TEMPLATE;
}
void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
Record.push_back(D->hasTypeConstraint());
VisitTypeDecl(D);
Record.push_back(D->wasDeclaredWithTypename());
const TypeConstraint *TC = D->getTypeConstraint();
assert((bool)TC == D->hasTypeConstraint());
if (TC) {
auto *CR = TC->getConceptReference();
Record.push_back(CR != nullptr);
if (CR)
Record.AddConceptReference(CR);
Record.AddStmt(TC->getImmediatelyDeclaredConstraint());
Record.push_back(D->isExpandedParameterPack());
if (D->isExpandedParameterPack())
Record.push_back(D->getNumExpansionParameters());
}
bool OwnsDefaultArg = D->hasDefaultArgument() &&
!D->defaultArgumentWasInherited();
Record.push_back(OwnsDefaultArg);
if (OwnsDefaultArg)
Record.AddTypeSourceInfo(D->getDefaultArgumentInfo());
if (!TC && !OwnsDefaultArg &&
D->getDeclContext() == D->getLexicalDeclContext() &&
!D->isInvalidDecl() && !D->hasAttrs() &&
!D->isTopLevelDeclInObjCContainer() && !D->isImplicit() &&
D->getDeclName().getNameKind() == DeclarationName::Identifier)
AbbrevToUse = Writer.getDeclTemplateTypeParmAbbrev();
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.
Expr *TypeConstraint = D->getPlaceholderTypeConstraint();
Record.push_back(!!TypeConstraint);
if (D->isExpandedParameterPack())
Record.push_back(D->getNumExpansionTypes());
VisitDeclaratorDecl(D);
// TemplateParmPosition.
Record.push_back(D->getDepth());
Record.push_back(D->getPosition());
if (TypeConstraint)
Record.AddStmt(TypeConstraint);
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);
Record.push_back(D->wasDeclaredWithTypename());
// 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) {
static_assert(DeclContext::NumDeclContextBits == 13,
"You need to update the serializer after you change the "
"DeclContextBits");
uint64_t LexicalOffset = 0;
uint64_t VisibleOffset = 0;
if (Writer.isGeneratingReducedBMI() && isa<NamespaceDecl>(DC) &&
cast<NamespaceDecl>(DC)->isFromExplicitGlobalModule()) {
// In reduced BMI, delay writing lexical and visible block for namespace
// in the global module fragment. See the comments of DelayedNamespace for
// details.
Writer.DelayedNamespace.push_back(cast<NamespaceDecl>(DC));
} else {
LexicalOffset = Writer.WriteDeclContextLexicalBlock(Context, DC);
VisibleOffset = Writer.WriteDeclContextVisibleBlock(Context, DC);
}
Record.AddOffset(LexicalOffset);
Record.AddOffset(VisibleOffset);
}
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::VisitHLSLBufferDecl(HLSLBufferDecl *D) {
VisitNamedDecl(D);
VisitDeclContext(D);
Record.push_back(D->isCBuffer());
Record.AddSourceLocation(D->getLocStart());
Record.AddSourceLocation(D->getLBraceLoc());
Record.AddSourceLocation(D->getRBraceLoc());
Code = serialization::DECL_HLSL_BUFFER;
}
void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
Record.writeOMPChildren(D->Data);
VisitDecl(D);
Code = serialization::DECL_OMP_THREADPRIVATE;
}
void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) {
Record.writeOMPChildren(D->Data);
VisitDecl(D);
Code = serialization::DECL_OMP_ALLOCATE;
}
void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) {
Record.writeOMPChildren(D->Data);
VisitDecl(D);
Code = serialization::DECL_OMP_REQUIRES;
}
void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
static_assert(DeclContext::NumOMPDeclareReductionDeclBits == 15,
"You need to update the serializer after you change the "
"NumOMPDeclareReductionDeclBits");
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(llvm::to_underlying(D->getInitializerKind()));
Record.AddDeclRef(D->getPrevDeclInScope());
Code = serialization::DECL_OMP_DECLARE_REDUCTION;
}
void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
Record.writeOMPChildren(D->Data);
VisitValueDecl(D);
Record.AddDeclarationName(D->getVarName());
Record.AddDeclRef(D->getPrevDeclInScope());
Code = serialization::DECL_OMP_DECLARE_MAPPER;
}
void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
VisitVarDecl(D);
Code = serialization::DECL_OMP_CAPTUREDEXPR;
}
//===----------------------------------------------------------------------===//
// ASTWriter Implementation
//===----------------------------------------------------------------------===//
namespace {
template <FunctionDecl::TemplatedKind Kind>
std::shared_ptr<llvm::BitCodeAbbrev>
getFunctionDeclAbbrev(serialization::DeclCode Code) {
using namespace llvm;
auto Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(Code));
// RedeclarableDecl
Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl
Abv->Add(BitCodeAbbrevOp(Kind));
if constexpr (Kind == FunctionDecl::TK_NonTemplate) {
} else if constexpr (Kind == FunctionDecl::TK_FunctionTemplate) {
// DescribedFunctionTemplate
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
} else if constexpr (Kind == FunctionDecl::TK_DependentNonTemplate) {
// Instantiated From Decl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
} else if constexpr (Kind == FunctionDecl::TK_MemberSpecialization) {
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedFrom
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
3)); // TemplateSpecializationKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Specialized Location
} else if constexpr (Kind ==
FunctionDecl::TK_FunctionTemplateSpecialization) {
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Template
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
3)); // TemplateSpecializationKind
Abv->Add(BitCodeAbbrevOp(1)); // Template Argument Size
Abv->Add(BitCodeAbbrevOp(TemplateArgument::Type)); // Template Argument Kind
Abv->Add(
BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Template Argument Type
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is Defaulted
Abv->Add(BitCodeAbbrevOp(0)); // TemplateArgumentsAsWritten
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
Abv->Add(BitCodeAbbrevOp(0));
Abv->Add(
BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Canonical Decl of template
} else if constexpr (Kind == FunctionDecl::
TK_DependentFunctionTemplateSpecialization) {
// Candidates of specialization
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
Abv->Add(BitCodeAbbrevOp(0)); // TemplateArgumentsAsWritten
} else {
llvm_unreachable("Unknown templated kind?");
}
// Decl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
8)); // Packed DeclBits: ModuleOwnershipKind,
// isUsed, isReferenced, AccessSpecifier,
// isImplicit
//
// The following bits should be 0:
// HasStandaloneLexicalDC, HasAttrs,
// TopLevelDeclInObjCContainer,
// isInvalidDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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,
28)); // Packed Function Bits: StorageClass, Inline, InlineSpecified,
// VirtualAsWritten, Pure, HasInheritedProto, HasWrittenProto,
// Deleted, Trivial, TrivialForCall, Defaulted, ExplicitlyDefaulted,
// IsIneligibleOrNotSelected, ImplicitReturnZero, Constexpr,
// UsesSEHTry, SkippedBody, MultiVersion, LateParsed,
// FriendConstraintRefersToEnclosingTemplate, Linkage,
// ShouldSkipCheckingODR
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash
// 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:
// 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));
return Abv;
}
template <FunctionDecl::TemplatedKind Kind>
std::shared_ptr<llvm::BitCodeAbbrev> getCXXMethodAbbrev() {
return getFunctionDeclAbbrev<Kind>(serialization::DECL_CXX_METHOD);
}
} // namespace
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::Fixed,
7)); // Packed DeclBits: ModuleOwnershipKind,
// isUsed, isReferenced, AccessSpecifier,
//
// The following bits should be 0:
// isImplicit, HasStandaloneLexicalDC, HasAttrs,
// TopLevelDeclInObjCContainer,
// isInvalidDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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)); // StorageKind
// 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::Fixed,
12)); // Packed DeclBits: HasStandaloneLexicalDC,
// isInvalidDecl, HasAttrs, isImplicit, isUsed,
// isReferenced, TopLevelDeclInObjCContainer,
// AccessSpecifier, ModuleOwnershipKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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::Fixed,
7)); // Packed DeclBits: ModuleOwnershipKind,
// isUsed, isReferenced, AccessSpecifier,
//
// The following bits should be 0:
// isImplicit, HasStandaloneLexicalDC, HasAttrs,
// TopLevelDeclInObjCContainer,
// isInvalidDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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::Fixed,
9)); // Packed Tag Decl Bits: getTagKind, isCompleteDefinition,
// EmbeddedInDeclarator, IsFreeStanding,
// isCompleteDefinitionRequired, ExtInfoKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
// 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::Fixed, 20)); // Enum Decl Bits
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::Fixed,
7)); // Packed DeclBits: ModuleOwnershipKind,
// isUsed, isReferenced, AccessSpecifier,
//
// The following bits should be 0:
// isImplicit, HasStandaloneLexicalDC, HasAttrs,
// TopLevelDeclInObjCContainer,
// isInvalidDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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::Fixed,
9)); // Packed Tag Decl Bits: getTagKind, isCompleteDefinition,
// EmbeddedInDeclarator, IsFreeStanding,
// isCompleteDefinitionRequired, ExtInfoKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
// RecordDecl
Abv->Add(BitCodeAbbrevOp(
BitCodeAbbrevOp::Fixed,
13)); // Packed Record Decl Bits: FlexibleArrayMember,
// AnonymousStructUnion, hasObjectMember, hasVolatileMember,
// isNonTrivialToPrimitiveDefaultInitialize,
// isNonTrivialToPrimitiveCopy, isNonTrivialToPrimitiveDestroy,
// hasNonTrivialToPrimitiveDefaultInitializeCUnion,
// hasNonTrivialToPrimitiveDestructCUnion,
// hasNonTrivialToPrimitiveCopyCUnion, isParamDestroyedInCallee,
// getArgPassingRestrictions
// ODRHash
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 26));
// 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::Fixed,
8)); // Packed DeclBits: ModuleOwnershipKind, isUsed,
// isReferenced, AccessSpecifier,
// HasStandaloneLexicalDC, HasAttrs, isImplicit,
// TopLevelDeclInObjCContainer,
// isInvalidDecl,
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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,
12)); // Packed Var Decl bits: SClass, TSCSpec, InitStyle,
// isARCPseudoStrong, Linkage, ModulesCodegen
Abv->Add(BitCodeAbbrevOp(0)); // VarKind (local enum)
// ParmVarDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex
Abv->Add(BitCodeAbbrevOp(
BitCodeAbbrevOp::Fixed,
19)); // Packed Parm Var Decl bits: IsObjCMethodParameter, ScopeDepth,
// ObjCDeclQualifier, KNRPromoted,
// HasInheritedDefaultArg, 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::Fixed,
7)); // Packed DeclBits: ModuleOwnershipKind,
// isReferenced, isUsed, AccessSpecifier. Other
// higher bits should be 0: isImplicit,
// HasStandaloneLexicalDC, HasAttrs,
// TopLevelDeclInObjCContainer, isInvalidDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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::Fixed,
12)); // Packed DeclBits: HasStandaloneLexicalDC,
// isInvalidDecl, HasAttrs, isImplicit, isUsed,
// isReferenced, TopLevelDeclInObjCContainer,
// AccessSpecifier, ModuleOwnershipKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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,
21)); // Packed Var Decl bits: Linkage, ModulesCodegen,
// SClass, TSCSpec, InitStyle,
// isARCPseudoStrong, IsThisDeclarationADemotedDefinition,
// isExceptionVariable, isNRVOVariable, isCXXForRangeDecl,
// isInline, isInlineSpecified, isConstexpr,
// isInitCapture, isPrevDeclInSameScope,
// EscapingByref, HasDeducedType, ImplicitParamKind, isObjCForDecl
Abv->Add(BitCodeAbbrevOp(0)); // 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
DeclCXXMethodAbbrev =
Stream.EmitAbbrev(getCXXMethodAbbrev<FunctionDecl::TK_NonTemplate>());
DeclTemplateCXXMethodAbbrev = Stream.EmitAbbrev(
getCXXMethodAbbrev<FunctionDecl::TK_FunctionTemplate>());
DeclDependentNonTemplateCXXMethodAbbrev = Stream.EmitAbbrev(
getCXXMethodAbbrev<FunctionDecl::TK_DependentNonTemplate>());
DeclMemberSpecializedCXXMethodAbbrev = Stream.EmitAbbrev(
getCXXMethodAbbrev<FunctionDecl::TK_MemberSpecialization>());
DeclTemplateSpecializedCXXMethodAbbrev = Stream.EmitAbbrev(
getCXXMethodAbbrev<FunctionDecl::TK_FunctionTemplateSpecialization>());
DeclDependentSpecializationCXXMethodAbbrev = Stream.EmitAbbrev(
getCXXMethodAbbrev<
FunctionDecl::TK_DependentFunctionTemplateSpecialization>());
// Abbreviation for DECL_TEMPLATE_TYPE_PARM
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::DECL_TEMPLATE_TYPE_PARM));
Abv->Add(BitCodeAbbrevOp(0)); // hasTypeConstraint
// Decl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
7)); // Packed DeclBits: ModuleOwnershipKind,
// isReferenced, isUsed, AccessSpecifier. Other
// higher bits should be 0: isImplicit,
// HasStandaloneLexicalDC, HasAttrs,
// TopLevelDeclInObjCContainer, isInvalidDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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));
// TypeDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
// TemplateTypeParmDecl
Abv->Add(
BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // wasDeclaredWithTypename
Abv->Add(BitCodeAbbrevOp(0)); // OwnsDefaultArg
DeclTemplateTypeParmAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for DECL_USING_SHADOW
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::DECL_USING_SHADOW));
// Redeclarable
Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
// Decl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
12)); // Packed DeclBits: HasStandaloneLexicalDC,
// isInvalidDecl, HasAttrs, isImplicit, isUsed,
// isReferenced, TopLevelDeclInObjCContainer,
// AccessSpecifier, ModuleOwnershipKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
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));
// UsingShadowDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TargetDecl
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // UsingOrNextShadow
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR,
6)); // InstantiatedFromUsingShadowDecl
DeclUsingShadowAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for EXPR_DECL_REF
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF));
// Stmt
// Expr
// PackingBits: DependenceKind, ValueKind. ObjectKind should be 0.
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 7));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// DeclRefExpr
// Packing Bits: , HadMultipleCandidates, RefersToEnclosingVariableOrCapture,
// IsImmediateEscalating, NonOdrUseReason.
// GetDeclFound, HasQualifier and ExplicitTemplateArgs should be 0.
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 5));
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
// Expr
// DependenceKind, ValueKind, ObjectKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// 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
// Expr
// DependenceKind, ValueKind, ObjectKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// 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
// Expr
// Packing Bits: DependenceKind, ValueKind, ObjectKind,
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// CastExpr
Abv->Add(BitCodeAbbrevOp(0)); // PathSize
// Packing Bits: CastKind, StoredFPFeatures, isPartOfExplicitCast
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 9));
// ImplicitCastExpr
ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for EXPR_BINARY_OPERATOR
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::EXPR_BINARY_OPERATOR));
// Stmt
// Expr
// Packing Bits: DependenceKind. ValueKind and ObjectKind should
// be 0 in this case.
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 5));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// BinaryOperator
Abv->Add(
BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // OpCode and HasFPFeatures
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
BinaryOperatorAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for EXPR_COMPOUND_ASSIGN_OPERATOR
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::EXPR_COMPOUND_ASSIGN_OPERATOR));
// Stmt
// Expr
// Packing Bits: DependenceKind. ValueKind and ObjectKind should
// be 0 in this case.
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 5));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// BinaryOperator
// Packing Bits: OpCode. The HasFPFeatures bit should be 0
Abv->Add(
BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // OpCode and HasFPFeatures
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
// CompoundAssignOperator
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LHSType
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Result Type
CompoundAssignOperatorAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for EXPR_CALL
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CALL));
// Stmt
// Expr
// Packing Bits: DependenceKind, ValueKind, ObjectKind,
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// CallExpr
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumArgs
Abv->Add(BitCodeAbbrevOp(0)); // ADLCallKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
CallExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for EXPR_CXX_OPERATOR_CALL
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CXX_OPERATOR_CALL));
// Stmt
// Expr
// Packing Bits: DependenceKind, ValueKind, ObjectKind,
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// CallExpr
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumArgs
Abv->Add(BitCodeAbbrevOp(0)); // ADLCallKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
// CXXOperatorCallExpr
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Operator Kind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
CXXOperatorCallExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for EXPR_CXX_MEMBER_CALL
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CXX_MEMBER_CALL));
// Stmt
// Expr
// Packing Bits: DependenceKind, ValueKind, ObjectKind,
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
// CallExpr
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumArgs
Abv->Add(BitCodeAbbrevOp(0)); // ADLCallKind
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
// CXXMemberCallExpr
CXXMemberCallExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for STMT_COMPOUND
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::STMT_COMPOUND));
// Stmt
// CompoundStmt
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Num Stmts
Abv->Add(BitCodeAbbrevOp(0)); // hasStoredFPFeatures
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
CompoundStmtAbbrev = 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,
Module *WritingModule) {
// Named modules have different semantics than header modules. Every named
// module units owns a translation unit. So the importer of named modules
// doesn't need to deserilize everything ahead of time.
if (WritingModule && WritingModule->isNamedModule()) {
// The PragmaCommentDecl and PragmaDetectMismatchDecl are MSVC's extension.
// And the behavior of MSVC for such cases will leak this to the module
// users. Given pragma is not a standard thing, the compiler has the space
// to do their own decision. Let's follow MSVC here.
if (isa<PragmaCommentDecl, PragmaDetectMismatchDecl>(D))
return true;
return false;
}
// 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, TopLevelStmtDecl, 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.
LocalDeclID ID;
assert(!D->isFromASTFile() && "should not be emitting imported decl");
LocalDeclID &IDR = DeclIDs[D];
if (IDR.isInvalid())
IDR = NextDeclID++;
ID = IDR;
assert(ID >= FirstDeclID && "invalid decl ID");
RecordData Record;
ASTDeclWriter W(*this, Context, Record, GeneratingReducedBMI);
// 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.get() - FirstDeclID.get();
if (DeclOffsets.size() == Index)
DeclOffsets.emplace_back(getAdjustedLocation(Loc), Offset,
DeclTypesBlockStartOffset);
else if (DeclOffsets.size() < Index) {
// FIXME: Can/should this happen?
DeclOffsets.resize(Index+1);
DeclOffsets[Index].setLocation(getAdjustedLocation(Loc));
DeclOffsets[Index].setBitOffset(Offset, DeclTypesBlockStartOffset);
} 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))
AddDeclRef(D, EagerlyDeserializedDecls);
}
void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) {
// Switch case IDs are per function body.
Writer->ClearSwitchCaseIDs();
assert(FD->doesThisDeclarationHaveABody());
bool ModulesCodegen = false;
if (!FD->isDependentContext()) {
std::optional<GVALinkage> Linkage;
if (Writer->WritingModule &&
Writer->WritingModule->isInterfaceOrPartition()) {
// When building a C++20 module interface unit or a partition unit, a
// strong definition in the module interface is provided by the
// compilation of that 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 ||
(FD->hasAttr<DLLExportAttr>() &&
Writer->Context->getLangOpts().BuildingPCHWithObjectFile)) {
// Under -fmodules-codegen, codegen is performed for all non-internal,
// non-always_inline functions, unless they are available elsewhere.
if (!FD->hasAttr<AlwaysInlineAttr>()) {
if (!Linkage)
Linkage = Writer->Context->GetGVALinkageForFunction(FD);
ModulesCodegen =
*Linkage != GVA_Internal && *Linkage != GVA_AvailableExternally;
}
}
}
Record->push_back(ModulesCodegen);
if (ModulesCodegen)
Writer->AddDeclRef(FD, Writer->ModularCodegenDecls);
if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
Record->push_back(CD->getNumCtorInitializers());
if (CD->getNumCtorInitializers())
AddCXXCtorInitializers(llvm::ArrayRef(CD->init_begin(), CD->init_end()));
}
AddStmt(FD->getBody());
}