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llvm-project/clang/lib/Serialization/ASTWriter.cpp
Michael Liao 243ebfba17 [hip][cuda] Fix the extended lambda name mangling issue. 
Summary:
- HIP/CUDA host side needs to use device kernel symbol name to match the
  device side binaries. Without a consistent naming between host- and
  device-side compilations, it's risky that wrong device binaries are
  executed. Consistent naming is usually not an issue until unnamed
  types are used, especially the lambda. In this patch, the consistent
  name mangling is addressed for the extended lambdas, i.e. the lambdas
  annotated with `__device__`.
- In [Itanium C++ ABI][1], the mangling of the lambda is generally
  unspecified unless, in certain cases, ODR rule is required to ensure
  consisent naming cross TUs. The extended lambda is such a case as its
  name may be part of a device kernel function, e.g., the extended
  lambda is used as a template argument and etc. Thus, we need to force
  ODR for extended lambdas as they are referenced in both device- and
  host-side TUs. Furthermore, if a extended lambda is nested in other
  (extended or not) lambdas, those lambdas are required to follow ODR
  naming as well. This patch revises the current lambda mangle numbering
  to force ODR from an extended lambda to all its parent lambdas.
- On the other side, the aforementioned ODR naming should not change
  those lambdas' original linkages, i.e., we cannot replace the original
  `internal` with `linkonce_odr`; otherwise, we may violate ODR in
  general. This patch introduces a new field `HasKnownInternalLinkage`
  in lambda data to decouple the current linkage calculation based on
  mangling number assigned.

[1]: https://itanium-cxx-abi.github.io/cxx-abi/abi.html

Reviewers: tra, rsmith, yaxunl, martong, shafik

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D68818

llvm-svn: 375309
2019-10-19 00:15:19 +00:00

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//===- ASTWriter.cpp - AST File Writer ------------------------------------===//
//
// 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 defines the ASTWriter class, which writes AST files.
//
//===----------------------------------------------------------------------===//
#include "clang/Serialization/ASTWriter.h"
#include "ASTCommon.h"
#include "ASTReaderInternals.h"
#include "MultiOnDiskHashTable.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTUnresolvedSet.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclContextInternals.h"
#include "clang/AST/DeclFriend.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DeclarationName.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/LambdaCapture.h"
#include "clang/AST/NestedNameSpecifier.h"
#include "clang/AST/RawCommentList.h"
#include "clang/AST/TemplateName.h"
#include "clang/AST/Type.h"
#include "clang/AST/TypeLocVisitor.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/FileSystemOptions.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/Lambda.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/Module.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/OpenCLOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/SourceManagerInternals.h"
#include "clang/Basic/Specifiers.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Basic/Version.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Lex/MacroInfo.h"
#include "clang/Lex/ModuleMap.h"
#include "clang/Lex/PreprocessingRecord.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "clang/Lex/Token.h"
#include "clang/Sema/IdentifierResolver.h"
#include "clang/Sema/ObjCMethodList.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/Weak.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/InMemoryModuleCache.h"
#include "clang/Serialization/Module.h"
#include "clang/Serialization/ModuleFileExtension.h"
#include "clang/Serialization/SerializationDiagnostic.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Bitstream/BitCodes.h"
#include "llvm/Bitstream/BitstreamWriter.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compression.h"
#include "llvm/Support/DJB.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/EndianStream.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/OnDiskHashTable.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SHA1.h"
#include "llvm/Support/VersionTuple.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <limits>
#include <memory>
#include <queue>
#include <tuple>
#include <utility>
#include <vector>
using namespace clang;
using namespace clang::serialization;
template <typename T, typename Allocator>
static StringRef bytes(const std::vector<T, Allocator> &v) {
if (v.empty()) return StringRef();
return StringRef(reinterpret_cast<const char*>(&v[0]),
sizeof(T) * v.size());
}
template <typename T>
static StringRef bytes(const SmallVectorImpl<T> &v) {
return StringRef(reinterpret_cast<const char*>(v.data()),
sizeof(T) * v.size());
}
//===----------------------------------------------------------------------===//
// Type serialization
//===----------------------------------------------------------------------===//
namespace clang {
class ASTTypeWriter {
ASTWriter &Writer;
ASTRecordWriter Record;
/// Type code that corresponds to the record generated.
TypeCode Code = static_cast<TypeCode>(0);
/// Abbreviation to use for the record, if any.
unsigned AbbrevToUse = 0;
public:
ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record)
: Writer(Writer), Record(Writer, Record) {}
uint64_t Emit() {
return Record.Emit(Code, AbbrevToUse);
}
void Visit(QualType T) {
if (T.hasLocalNonFastQualifiers()) {
Qualifiers Qs = T.getLocalQualifiers();
Record.AddTypeRef(T.getLocalUnqualifiedType());
Record.push_back(Qs.getAsOpaqueValue());
Code = TYPE_EXT_QUAL;
AbbrevToUse = Writer.TypeExtQualAbbrev;
} else {
switch (T->getTypeClass()) {
// For all of the concrete, non-dependent types, call the
// appropriate visitor function.
#define TYPE(Class, Base) \
case Type::Class: Visit##Class##Type(cast<Class##Type>(T)); break;
#define ABSTRACT_TYPE(Class, Base)
#include "clang/AST/TypeNodes.inc"
}
}
}
void VisitArrayType(const ArrayType *T);
void VisitFunctionType(const FunctionType *T);
void VisitTagType(const TagType *T);
#define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T);
#define ABSTRACT_TYPE(Class, Base)
#include "clang/AST/TypeNodes.inc"
};
} // namespace clang
void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) {
llvm_unreachable("Built-in types are never serialized");
}
void ASTTypeWriter::VisitComplexType(const ComplexType *T) {
Record.AddTypeRef(T->getElementType());
Code = TYPE_COMPLEX;
}
void ASTTypeWriter::VisitPointerType(const PointerType *T) {
Record.AddTypeRef(T->getPointeeType());
Code = TYPE_POINTER;
}
void ASTTypeWriter::VisitDecayedType(const DecayedType *T) {
Record.AddTypeRef(T->getOriginalType());
Code = TYPE_DECAYED;
}
void ASTTypeWriter::VisitAdjustedType(const AdjustedType *T) {
Record.AddTypeRef(T->getOriginalType());
Record.AddTypeRef(T->getAdjustedType());
Code = TYPE_ADJUSTED;
}
void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) {
Record.AddTypeRef(T->getPointeeType());
Code = TYPE_BLOCK_POINTER;
}
void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) {
Record.AddTypeRef(T->getPointeeTypeAsWritten());
Record.push_back(T->isSpelledAsLValue());
Code = TYPE_LVALUE_REFERENCE;
}
void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) {
Record.AddTypeRef(T->getPointeeTypeAsWritten());
Code = TYPE_RVALUE_REFERENCE;
}
void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) {
Record.AddTypeRef(T->getPointeeType());
Record.AddTypeRef(QualType(T->getClass(), 0));
Code = TYPE_MEMBER_POINTER;
}
void ASTTypeWriter::VisitArrayType(const ArrayType *T) {
Record.AddTypeRef(T->getElementType());
Record.push_back(T->getSizeModifier()); // FIXME: stable values
Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values
}
void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) {
VisitArrayType(T);
Record.AddAPInt(T->getSize());
Record.AddStmt(const_cast<Expr*>(T->getSizeExpr()));
Code = TYPE_CONSTANT_ARRAY;
}
void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
VisitArrayType(T);
Code = TYPE_INCOMPLETE_ARRAY;
}
void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
VisitArrayType(T);
Record.AddSourceLocation(T->getLBracketLoc());
Record.AddSourceLocation(T->getRBracketLoc());
Record.AddStmt(T->getSizeExpr());
Code = TYPE_VARIABLE_ARRAY;
}
void ASTTypeWriter::VisitVectorType(const VectorType *T) {
Record.AddTypeRef(T->getElementType());
Record.push_back(T->getNumElements());
Record.push_back(T->getVectorKind());
Code = TYPE_VECTOR;
}
void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
VisitVectorType(T);
Code = TYPE_EXT_VECTOR;
}
void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
Record.AddTypeRef(T->getReturnType());
FunctionType::ExtInfo C = T->getExtInfo();
Record.push_back(C.getNoReturn());
Record.push_back(C.getHasRegParm());
Record.push_back(C.getRegParm());
// FIXME: need to stabilize encoding of calling convention...
Record.push_back(C.getCC());
Record.push_back(C.getProducesResult());
Record.push_back(C.getNoCallerSavedRegs());
Record.push_back(C.getNoCfCheck());
if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
AbbrevToUse = 0;
}
void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
VisitFunctionType(T);
Code = TYPE_FUNCTION_NO_PROTO;
}
static void addExceptionSpec(const FunctionProtoType *T,
ASTRecordWriter &Record) {
Record.push_back(T->getExceptionSpecType());
if (T->getExceptionSpecType() == EST_Dynamic) {
Record.push_back(T->getNumExceptions());
for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
Record.AddTypeRef(T->getExceptionType(I));
} else if (isComputedNoexcept(T->getExceptionSpecType())) {
Record.AddStmt(T->getNoexceptExpr());
} else if (T->getExceptionSpecType() == EST_Uninstantiated) {
Record.AddDeclRef(T->getExceptionSpecDecl());
Record.AddDeclRef(T->getExceptionSpecTemplate());
} else if (T->getExceptionSpecType() == EST_Unevaluated) {
Record.AddDeclRef(T->getExceptionSpecDecl());
}
}
void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
VisitFunctionType(T);
Record.push_back(T->isVariadic());
Record.push_back(T->hasTrailingReturn());
Record.push_back(T->getMethodQuals().getAsOpaqueValue());
Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
addExceptionSpec(T, Record);
Record.push_back(T->getNumParams());
for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
Record.AddTypeRef(T->getParamType(I));
if (T->hasExtParameterInfos()) {
for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
}
if (T->isVariadic() || T->hasTrailingReturn() || T->getMethodQuals() ||
T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
T->hasExtParameterInfos())
AbbrevToUse = 0;
Code = TYPE_FUNCTION_PROTO;
}
void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
Record.AddDeclRef(T->getDecl());
Code = TYPE_UNRESOLVED_USING;
}
void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
Record.AddDeclRef(T->getDecl());
assert(!T->isCanonicalUnqualified() && "Invalid typedef ?");
Record.AddTypeRef(T->getCanonicalTypeInternal());
Code = TYPE_TYPEDEF;
}
void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
Record.AddStmt(T->getUnderlyingExpr());
Code = TYPE_TYPEOF_EXPR;
}
void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
Record.AddTypeRef(T->getUnderlyingType());
Code = TYPE_TYPEOF;
}
void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
Record.AddTypeRef(T->getUnderlyingType());
Record.AddStmt(T->getUnderlyingExpr());
Code = TYPE_DECLTYPE;
}
void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
Record.AddTypeRef(T->getBaseType());
Record.AddTypeRef(T->getUnderlyingType());
Record.push_back(T->getUTTKind());
Code = TYPE_UNARY_TRANSFORM;
}
void ASTTypeWriter::VisitAutoType(const AutoType *T) {
Record.AddTypeRef(T->getDeducedType());
Record.push_back((unsigned)T->getKeyword());
if (T->getDeducedType().isNull())
Record.push_back(T->containsUnexpandedParameterPack() ? 2 :
T->isDependentType() ? 1 : 0);
Code = TYPE_AUTO;
}
void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
const DeducedTemplateSpecializationType *T) {
Record.AddTemplateName(T->getTemplateName());
Record.AddTypeRef(T->getDeducedType());
if (T->getDeducedType().isNull())
Record.push_back(T->isDependentType());
Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
}
void ASTTypeWriter::VisitTagType(const TagType *T) {
Record.push_back(T->isDependentType());
Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
assert(!T->isBeingDefined() &&
"Cannot serialize in the middle of a type definition");
}
void ASTTypeWriter::VisitRecordType(const RecordType *T) {
VisitTagType(T);
Code = TYPE_RECORD;
}
void ASTTypeWriter::VisitEnumType(const EnumType *T) {
VisitTagType(T);
Code = TYPE_ENUM;
}
void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
Record.AddTypeRef(T->getModifiedType());
Record.AddTypeRef(T->getEquivalentType());
Record.push_back(T->getAttrKind());
Code = TYPE_ATTRIBUTED;
}
void
ASTTypeWriter::VisitSubstTemplateTypeParmType(
const SubstTemplateTypeParmType *T) {
Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
Record.AddTypeRef(T->getReplacementType());
Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
}
void
ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
const SubstTemplateTypeParmPackType *T) {
Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
Record.AddTemplateArgument(T->getArgumentPack());
Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
}
void
ASTTypeWriter::VisitTemplateSpecializationType(
const TemplateSpecializationType *T) {
Record.push_back(T->isDependentType());
Record.AddTemplateName(T->getTemplateName());
Record.push_back(T->getNumArgs());
for (const auto &ArgI : *T)
Record.AddTemplateArgument(ArgI);
Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
: T->isCanonicalUnqualified()
? QualType()
: T->getCanonicalTypeInternal());
Code = TYPE_TEMPLATE_SPECIALIZATION;
}
void
ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
VisitArrayType(T);
Record.AddStmt(T->getSizeExpr());
Record.AddSourceRange(T->getBracketsRange());
Code = TYPE_DEPENDENT_SIZED_ARRAY;
}
void
ASTTypeWriter::VisitDependentSizedExtVectorType(
const DependentSizedExtVectorType *T) {
Record.AddTypeRef(T->getElementType());
Record.AddStmt(T->getSizeExpr());
Record.AddSourceLocation(T->getAttributeLoc());
Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
}
void ASTTypeWriter::VisitDependentVectorType(const DependentVectorType *T) {
Record.AddTypeRef(T->getElementType());
Record.AddStmt(const_cast<Expr*>(T->getSizeExpr()));
Record.AddSourceLocation(T->getAttributeLoc());
Record.push_back(T->getVectorKind());
Code = TYPE_DEPENDENT_SIZED_VECTOR;
}
void
ASTTypeWriter::VisitDependentAddressSpaceType(
const DependentAddressSpaceType *T) {
Record.AddTypeRef(T->getPointeeType());
Record.AddStmt(T->getAddrSpaceExpr());
Record.AddSourceLocation(T->getAttributeLoc());
Code = TYPE_DEPENDENT_ADDRESS_SPACE;
}
void
ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
Record.push_back(T->getDepth());
Record.push_back(T->getIndex());
Record.push_back(T->isParameterPack());
Record.AddDeclRef(T->getDecl());
Code = TYPE_TEMPLATE_TYPE_PARM;
}
void
ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
Record.push_back(T->getKeyword());
Record.AddNestedNameSpecifier(T->getQualifier());
Record.AddIdentifierRef(T->getIdentifier());
Record.AddTypeRef(
T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
Code = TYPE_DEPENDENT_NAME;
}
void
ASTTypeWriter::VisitDependentTemplateSpecializationType(
const DependentTemplateSpecializationType *T) {
Record.push_back(T->getKeyword());
Record.AddNestedNameSpecifier(T->getQualifier());
Record.AddIdentifierRef(T->getIdentifier());
Record.push_back(T->getNumArgs());
for (const auto &I : *T)
Record.AddTemplateArgument(I);
Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
}
void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
Record.AddTypeRef(T->getPattern());
if (Optional<unsigned> NumExpansions = T->getNumExpansions())
Record.push_back(*NumExpansions + 1);
else
Record.push_back(0);
Code = TYPE_PACK_EXPANSION;
}
void ASTTypeWriter::VisitParenType(const ParenType *T) {
Record.AddTypeRef(T->getInnerType());
Code = TYPE_PAREN;
}
void ASTTypeWriter::VisitMacroQualifiedType(const MacroQualifiedType *T) {
Record.AddTypeRef(T->getUnderlyingType());
Record.AddIdentifierRef(T->getMacroIdentifier());
Code = TYPE_MACRO_QUALIFIED;
}
void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
Record.push_back(T->getKeyword());
Record.AddNestedNameSpecifier(T->getQualifier());
Record.AddTypeRef(T->getNamedType());
Record.AddDeclRef(T->getOwnedTagDecl());
Code = TYPE_ELABORATED;
}
void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
Record.AddTypeRef(T->getInjectedSpecializationType());
Code = TYPE_INJECTED_CLASS_NAME;
}
void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
Code = TYPE_OBJC_INTERFACE;
}
void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
Record.AddDeclRef(T->getDecl());
Record.push_back(T->getNumProtocols());
for (const auto *I : T->quals())
Record.AddDeclRef(I);
Code = TYPE_OBJC_TYPE_PARAM;
}
void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
Record.AddTypeRef(T->getBaseType());
Record.push_back(T->getTypeArgsAsWritten().size());
for (auto TypeArg : T->getTypeArgsAsWritten())
Record.AddTypeRef(TypeArg);
Record.push_back(T->getNumProtocols());
for (const auto *I : T->quals())
Record.AddDeclRef(I);
Record.push_back(T->isKindOfTypeAsWritten());
Code = TYPE_OBJC_OBJECT;
}
void
ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
Record.AddTypeRef(T->getPointeeType());
Code = TYPE_OBJC_OBJECT_POINTER;
}
void
ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
Record.AddTypeRef(T->getValueType());
Code = TYPE_ATOMIC;
}
void
ASTTypeWriter::VisitPipeType(const PipeType *T) {
Record.AddTypeRef(T->getElementType());
Record.push_back(T->isReadOnly());
Code = TYPE_PIPE;
}
namespace {
class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
ASTRecordWriter &Record;
public:
TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
#include "clang/AST/TypeLocNodes.def"
void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
};
} // namespace
void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
// nothing to do
}
void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
Record.AddSourceLocation(TL.getBuiltinLoc());
if (TL.needsExtraLocalData()) {
Record.push_back(TL.getWrittenTypeSpec());
Record.push_back(TL.getWrittenSignSpec());
Record.push_back(TL.getWrittenWidthSpec());
Record.push_back(TL.hasModeAttr());
}
}
void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
Record.AddSourceLocation(TL.getStarLoc());
}
void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
// nothing to do
}
void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
// nothing to do
}
void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
Record.AddSourceLocation(TL.getCaretLoc());
}
void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
Record.AddSourceLocation(TL.getAmpLoc());
}
void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
Record.AddSourceLocation(TL.getAmpAmpLoc());
}
void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
Record.AddSourceLocation(TL.getStarLoc());
Record.AddTypeSourceInfo(TL.getClassTInfo());
}
void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
Record.AddSourceLocation(TL.getLBracketLoc());
Record.AddSourceLocation(TL.getRBracketLoc());
Record.push_back(TL.getSizeExpr() ? 1 : 0);
if (TL.getSizeExpr())
Record.AddStmt(TL.getSizeExpr());
}
void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
VisitArrayTypeLoc(TL);
}
void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
VisitArrayTypeLoc(TL);
}
void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
VisitArrayTypeLoc(TL);
}
void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
DependentSizedArrayTypeLoc TL) {
VisitArrayTypeLoc(TL);
}
void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
DependentAddressSpaceTypeLoc TL) {
Record.AddSourceLocation(TL.getAttrNameLoc());
SourceRange range = TL.getAttrOperandParensRange();
Record.AddSourceLocation(range.getBegin());
Record.AddSourceLocation(range.getEnd());
Record.AddStmt(TL.getAttrExprOperand());
}
void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
DependentSizedExtVectorTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitDependentVectorTypeLoc(
DependentVectorTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
Record.AddSourceLocation(TL.getLocalRangeBegin());
Record.AddSourceLocation(TL.getLParenLoc());
Record.AddSourceLocation(TL.getRParenLoc());
Record.AddSourceRange(TL.getExceptionSpecRange());
Record.AddSourceLocation(TL.getLocalRangeEnd());
for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
Record.AddDeclRef(TL.getParam(i));
}
void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
VisitFunctionTypeLoc(TL);
}
void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
VisitFunctionTypeLoc(TL);
}
void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
if (TL.getNumProtocols()) {
Record.AddSourceLocation(TL.getProtocolLAngleLoc());
Record.AddSourceLocation(TL.getProtocolRAngleLoc());
}
for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
Record.AddSourceLocation(TL.getProtocolLoc(i));
}
void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
Record.AddSourceLocation(TL.getTypeofLoc());
Record.AddSourceLocation(TL.getLParenLoc());
Record.AddSourceLocation(TL.getRParenLoc());
}
void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
Record.AddSourceLocation(TL.getTypeofLoc());
Record.AddSourceLocation(TL.getLParenLoc());
Record.AddSourceLocation(TL.getRParenLoc());
Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
}
void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
Record.AddSourceLocation(TL.getKWLoc());
Record.AddSourceLocation(TL.getLParenLoc());
Record.AddSourceLocation(TL.getRParenLoc());
Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
}
void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
DeducedTemplateSpecializationTypeLoc TL) {
Record.AddSourceLocation(TL.getTemplateNameLoc());
}
void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
Record.AddAttr(TL.getAttr());
}
void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
SubstTemplateTypeParmTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
SubstTemplateTypeParmPackTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
TemplateSpecializationTypeLoc TL) {
Record.AddSourceLocation(TL.getTemplateKeywordLoc());
Record.AddSourceLocation(TL.getTemplateNameLoc());
Record.AddSourceLocation(TL.getLAngleLoc());
Record.AddSourceLocation(TL.getRAngleLoc());
for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
TL.getArgLoc(i).getLocInfo());
}
void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
Record.AddSourceLocation(TL.getLParenLoc());
Record.AddSourceLocation(TL.getRParenLoc());
}
void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
Record.AddSourceLocation(TL.getExpansionLoc());
}
void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
}
void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
DependentTemplateSpecializationTypeLoc TL) {
Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
Record.AddSourceLocation(TL.getTemplateKeywordLoc());
Record.AddSourceLocation(TL.getTemplateNameLoc());
Record.AddSourceLocation(TL.getLAngleLoc());
Record.AddSourceLocation(TL.getRAngleLoc());
for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
TL.getArgLoc(I).getLocInfo());
}
void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
Record.AddSourceLocation(TL.getEllipsisLoc());
}
void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
Record.AddSourceLocation(TL.getNameLoc());
}
void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
Record.push_back(TL.hasBaseTypeAsWritten());
Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
Record.AddSourceLocation(TL.getProtocolLAngleLoc());
Record.AddSourceLocation(TL.getProtocolRAngleLoc());
for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
Record.AddSourceLocation(TL.getProtocolLoc(i));
}
void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
Record.AddSourceLocation(TL.getStarLoc());
}
void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
Record.AddSourceLocation(TL.getKWLoc());
Record.AddSourceLocation(TL.getLParenLoc());
Record.AddSourceLocation(TL.getRParenLoc());
}
void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
Record.AddSourceLocation(TL.getKWLoc());
}
void ASTWriter::WriteTypeAbbrevs() {
using namespace llvm;
std::shared_ptr<BitCodeAbbrev> Abv;
// Abbreviation for TYPE_EXT_QUAL
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
// Abbreviation for TYPE_FUNCTION_PROTO
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
// FunctionType
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
Abv->Add(BitCodeAbbrevOp(0)); // RegParm
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
// FunctionProtoType
Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
}
//===----------------------------------------------------------------------===//
// ASTWriter Implementation
//===----------------------------------------------------------------------===//
static void EmitBlockID(unsigned ID, const char *Name,
llvm::BitstreamWriter &Stream,
ASTWriter::RecordDataImpl &Record) {
Record.clear();
Record.push_back(ID);
Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
// Emit the block name if present.
if (!Name || Name[0] == 0)
return;
Record.clear();
while (*Name)
Record.push_back(*Name++);
Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
}
static void EmitRecordID(unsigned ID, const char *Name,
llvm::BitstreamWriter &Stream,
ASTWriter::RecordDataImpl &Record) {
Record.clear();
Record.push_back(ID);
while (*Name)
Record.push_back(*Name++);
Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
}
static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
ASTWriter::RecordDataImpl &Record) {
#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
RECORD(STMT_STOP);
RECORD(STMT_NULL_PTR);
RECORD(STMT_REF_PTR);
RECORD(STMT_NULL);
RECORD(STMT_COMPOUND);
RECORD(STMT_CASE);
RECORD(STMT_DEFAULT);
RECORD(STMT_LABEL);
RECORD(STMT_ATTRIBUTED);
RECORD(STMT_IF);
RECORD(STMT_SWITCH);
RECORD(STMT_WHILE);
RECORD(STMT_DO);
RECORD(STMT_FOR);
RECORD(STMT_GOTO);
RECORD(STMT_INDIRECT_GOTO);
RECORD(STMT_CONTINUE);
RECORD(STMT_BREAK);
RECORD(STMT_RETURN);
RECORD(STMT_DECL);
RECORD(STMT_GCCASM);
RECORD(STMT_MSASM);
RECORD(EXPR_PREDEFINED);
RECORD(EXPR_DECL_REF);
RECORD(EXPR_INTEGER_LITERAL);
RECORD(EXPR_FLOATING_LITERAL);
RECORD(EXPR_IMAGINARY_LITERAL);
RECORD(EXPR_STRING_LITERAL);
RECORD(EXPR_CHARACTER_LITERAL);
RECORD(EXPR_PAREN);
RECORD(EXPR_PAREN_LIST);
RECORD(EXPR_UNARY_OPERATOR);
RECORD(EXPR_SIZEOF_ALIGN_OF);
RECORD(EXPR_ARRAY_SUBSCRIPT);
RECORD(EXPR_CALL);
RECORD(EXPR_MEMBER);
RECORD(EXPR_BINARY_OPERATOR);
RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
RECORD(EXPR_CONDITIONAL_OPERATOR);
RECORD(EXPR_IMPLICIT_CAST);
RECORD(EXPR_CSTYLE_CAST);
RECORD(EXPR_COMPOUND_LITERAL);
RECORD(EXPR_EXT_VECTOR_ELEMENT);
RECORD(EXPR_INIT_LIST);
RECORD(EXPR_DESIGNATED_INIT);
RECORD(EXPR_DESIGNATED_INIT_UPDATE);
RECORD(EXPR_IMPLICIT_VALUE_INIT);
RECORD(EXPR_NO_INIT);
RECORD(EXPR_VA_ARG);
RECORD(EXPR_ADDR_LABEL);
RECORD(EXPR_STMT);
RECORD(EXPR_CHOOSE);
RECORD(EXPR_GNU_NULL);
RECORD(EXPR_SHUFFLE_VECTOR);
RECORD(EXPR_BLOCK);
RECORD(EXPR_GENERIC_SELECTION);
RECORD(EXPR_OBJC_STRING_LITERAL);
RECORD(EXPR_OBJC_BOXED_EXPRESSION);
RECORD(EXPR_OBJC_ARRAY_LITERAL);
RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
RECORD(EXPR_OBJC_ENCODE);
RECORD(EXPR_OBJC_SELECTOR_EXPR);
RECORD(EXPR_OBJC_PROTOCOL_EXPR);
RECORD(EXPR_OBJC_IVAR_REF_EXPR);
RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
RECORD(EXPR_OBJC_KVC_REF_EXPR);
RECORD(EXPR_OBJC_MESSAGE_EXPR);
RECORD(STMT_OBJC_FOR_COLLECTION);
RECORD(STMT_OBJC_CATCH);
RECORD(STMT_OBJC_FINALLY);
RECORD(STMT_OBJC_AT_TRY);
RECORD(STMT_OBJC_AT_SYNCHRONIZED);
RECORD(STMT_OBJC_AT_THROW);
RECORD(EXPR_OBJC_BOOL_LITERAL);
RECORD(STMT_CXX_CATCH);
RECORD(STMT_CXX_TRY);
RECORD(STMT_CXX_FOR_RANGE);
RECORD(EXPR_CXX_OPERATOR_CALL);
RECORD(EXPR_CXX_MEMBER_CALL);
RECORD(EXPR_CXX_REWRITTEN_BINARY_OPERATOR);
RECORD(EXPR_CXX_CONSTRUCT);
RECORD(EXPR_CXX_TEMPORARY_OBJECT);
RECORD(EXPR_CXX_STATIC_CAST);
RECORD(EXPR_CXX_DYNAMIC_CAST);
RECORD(EXPR_CXX_REINTERPRET_CAST);
RECORD(EXPR_CXX_CONST_CAST);
RECORD(EXPR_CXX_FUNCTIONAL_CAST);
RECORD(EXPR_USER_DEFINED_LITERAL);
RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
RECORD(EXPR_CXX_BOOL_LITERAL);
RECORD(EXPR_CXX_NULL_PTR_LITERAL);
RECORD(EXPR_CXX_TYPEID_EXPR);
RECORD(EXPR_CXX_TYPEID_TYPE);
RECORD(EXPR_CXX_THIS);
RECORD(EXPR_CXX_THROW);
RECORD(EXPR_CXX_DEFAULT_ARG);
RECORD(EXPR_CXX_DEFAULT_INIT);
RECORD(EXPR_CXX_BIND_TEMPORARY);
RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
RECORD(EXPR_CXX_NEW);
RECORD(EXPR_CXX_DELETE);
RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
RECORD(EXPR_EXPR_WITH_CLEANUPS);
RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
RECORD(EXPR_CXX_EXPRESSION_TRAIT);
RECORD(EXPR_CXX_NOEXCEPT);
RECORD(EXPR_OPAQUE_VALUE);
RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
RECORD(EXPR_TYPE_TRAIT);
RECORD(EXPR_ARRAY_TYPE_TRAIT);
RECORD(EXPR_PACK_EXPANSION);
RECORD(EXPR_SIZEOF_PACK);
RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
RECORD(EXPR_FUNCTION_PARM_PACK);
RECORD(EXPR_MATERIALIZE_TEMPORARY);
RECORD(EXPR_CUDA_KERNEL_CALL);
RECORD(EXPR_CXX_UUIDOF_EXPR);
RECORD(EXPR_CXX_UUIDOF_TYPE);
RECORD(EXPR_LAMBDA);
#undef RECORD
}
void ASTWriter::WriteBlockInfoBlock() {
RecordData Record;
Stream.EnterBlockInfoBlock();
#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
// Control Block.
BLOCK(CONTROL_BLOCK);
RECORD(METADATA);
RECORD(MODULE_NAME);
RECORD(MODULE_DIRECTORY);
RECORD(MODULE_MAP_FILE);
RECORD(IMPORTS);
RECORD(ORIGINAL_FILE);
RECORD(ORIGINAL_PCH_DIR);
RECORD(ORIGINAL_FILE_ID);
RECORD(INPUT_FILE_OFFSETS);
BLOCK(OPTIONS_BLOCK);
RECORD(LANGUAGE_OPTIONS);
RECORD(TARGET_OPTIONS);
RECORD(FILE_SYSTEM_OPTIONS);
RECORD(HEADER_SEARCH_OPTIONS);
RECORD(PREPROCESSOR_OPTIONS);
BLOCK(INPUT_FILES_BLOCK);
RECORD(INPUT_FILE);
RECORD(INPUT_FILE_HASH);
// AST Top-Level Block.
BLOCK(AST_BLOCK);
RECORD(TYPE_OFFSET);
RECORD(DECL_OFFSET);
RECORD(IDENTIFIER_OFFSET);
RECORD(IDENTIFIER_TABLE);
RECORD(EAGERLY_DESERIALIZED_DECLS);
RECORD(MODULAR_CODEGEN_DECLS);
RECORD(SPECIAL_TYPES);
RECORD(STATISTICS);
RECORD(TENTATIVE_DEFINITIONS);
RECORD(SELECTOR_OFFSETS);
RECORD(METHOD_POOL);
RECORD(PP_COUNTER_VALUE);
RECORD(SOURCE_LOCATION_OFFSETS);
RECORD(SOURCE_LOCATION_PRELOADS);
RECORD(EXT_VECTOR_DECLS);
RECORD(UNUSED_FILESCOPED_DECLS);
RECORD(PPD_ENTITIES_OFFSETS);
RECORD(VTABLE_USES);
RECORD(PPD_SKIPPED_RANGES);
RECORD(REFERENCED_SELECTOR_POOL);
RECORD(TU_UPDATE_LEXICAL);
RECORD(SEMA_DECL_REFS);
RECORD(WEAK_UNDECLARED_IDENTIFIERS);
RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
RECORD(UPDATE_VISIBLE);
RECORD(DECL_UPDATE_OFFSETS);
RECORD(DECL_UPDATES);
RECORD(CUDA_SPECIAL_DECL_REFS);
RECORD(HEADER_SEARCH_TABLE);
RECORD(FP_PRAGMA_OPTIONS);
RECORD(OPENCL_EXTENSIONS);
RECORD(OPENCL_EXTENSION_TYPES);
RECORD(OPENCL_EXTENSION_DECLS);
RECORD(DELEGATING_CTORS);
RECORD(KNOWN_NAMESPACES);
RECORD(MODULE_OFFSET_MAP);
RECORD(SOURCE_MANAGER_LINE_TABLE);
RECORD(OBJC_CATEGORIES_MAP);
RECORD(FILE_SORTED_DECLS);
RECORD(IMPORTED_MODULES);
RECORD(OBJC_CATEGORIES);
RECORD(MACRO_OFFSET);
RECORD(INTERESTING_IDENTIFIERS);
RECORD(UNDEFINED_BUT_USED);
RECORD(LATE_PARSED_TEMPLATE);
RECORD(OPTIMIZE_PRAGMA_OPTIONS);
RECORD(MSSTRUCT_PRAGMA_OPTIONS);
RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
RECORD(DELETE_EXPRS_TO_ANALYZE);
RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
RECORD(PP_CONDITIONAL_STACK);
// SourceManager Block.
BLOCK(SOURCE_MANAGER_BLOCK);
RECORD(SM_SLOC_FILE_ENTRY);
RECORD(SM_SLOC_BUFFER_ENTRY);
RECORD(SM_SLOC_BUFFER_BLOB);
RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
RECORD(SM_SLOC_EXPANSION_ENTRY);
// Preprocessor Block.
BLOCK(PREPROCESSOR_BLOCK);
RECORD(PP_MACRO_DIRECTIVE_HISTORY);
RECORD(PP_MACRO_FUNCTION_LIKE);
RECORD(PP_MACRO_OBJECT_LIKE);
RECORD(PP_MODULE_MACRO);
RECORD(PP_TOKEN);
// Submodule Block.
BLOCK(SUBMODULE_BLOCK);
RECORD(SUBMODULE_METADATA);
RECORD(SUBMODULE_DEFINITION);
RECORD(SUBMODULE_UMBRELLA_HEADER);
RECORD(SUBMODULE_HEADER);
RECORD(SUBMODULE_TOPHEADER);
RECORD(SUBMODULE_UMBRELLA_DIR);
RECORD(SUBMODULE_IMPORTS);
RECORD(SUBMODULE_EXPORTS);
RECORD(SUBMODULE_REQUIRES);
RECORD(SUBMODULE_EXCLUDED_HEADER);
RECORD(SUBMODULE_LINK_LIBRARY);
RECORD(SUBMODULE_CONFIG_MACRO);
RECORD(SUBMODULE_CONFLICT);
RECORD(SUBMODULE_PRIVATE_HEADER);
RECORD(SUBMODULE_TEXTUAL_HEADER);
RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
RECORD(SUBMODULE_INITIALIZERS);
RECORD(SUBMODULE_EXPORT_AS);
// Comments Block.
BLOCK(COMMENTS_BLOCK);
RECORD(COMMENTS_RAW_COMMENT);
// Decls and Types block.
BLOCK(DECLTYPES_BLOCK);
RECORD(TYPE_EXT_QUAL);
RECORD(TYPE_COMPLEX);
RECORD(TYPE_POINTER);
RECORD(TYPE_BLOCK_POINTER);
RECORD(TYPE_LVALUE_REFERENCE);
RECORD(TYPE_RVALUE_REFERENCE);
RECORD(TYPE_MEMBER_POINTER);
RECORD(TYPE_CONSTANT_ARRAY);
RECORD(TYPE_INCOMPLETE_ARRAY);
RECORD(TYPE_VARIABLE_ARRAY);
RECORD(TYPE_VECTOR);
RECORD(TYPE_EXT_VECTOR);
RECORD(TYPE_FUNCTION_NO_PROTO);
RECORD(TYPE_FUNCTION_PROTO);
RECORD(TYPE_TYPEDEF);
RECORD(TYPE_TYPEOF_EXPR);
RECORD(TYPE_TYPEOF);
RECORD(TYPE_RECORD);
RECORD(TYPE_ENUM);
RECORD(TYPE_OBJC_INTERFACE);
RECORD(TYPE_OBJC_OBJECT_POINTER);
RECORD(TYPE_DECLTYPE);
RECORD(TYPE_ELABORATED);
RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
RECORD(TYPE_UNRESOLVED_USING);
RECORD(TYPE_INJECTED_CLASS_NAME);
RECORD(TYPE_OBJC_OBJECT);
RECORD(TYPE_TEMPLATE_TYPE_PARM);
RECORD(TYPE_TEMPLATE_SPECIALIZATION);
RECORD(TYPE_DEPENDENT_NAME);
RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
RECORD(TYPE_PAREN);
RECORD(TYPE_MACRO_QUALIFIED);
RECORD(TYPE_PACK_EXPANSION);
RECORD(TYPE_ATTRIBUTED);
RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
RECORD(TYPE_AUTO);
RECORD(TYPE_UNARY_TRANSFORM);
RECORD(TYPE_ATOMIC);
RECORD(TYPE_DECAYED);
RECORD(TYPE_ADJUSTED);
RECORD(TYPE_OBJC_TYPE_PARAM);
RECORD(LOCAL_REDECLARATIONS);
RECORD(DECL_TYPEDEF);
RECORD(DECL_TYPEALIAS);
RECORD(DECL_ENUM);
RECORD(DECL_RECORD);
RECORD(DECL_ENUM_CONSTANT);
RECORD(DECL_FUNCTION);
RECORD(DECL_OBJC_METHOD);
RECORD(DECL_OBJC_INTERFACE);
RECORD(DECL_OBJC_PROTOCOL);
RECORD(DECL_OBJC_IVAR);
RECORD(DECL_OBJC_AT_DEFS_FIELD);
RECORD(DECL_OBJC_CATEGORY);
RECORD(DECL_OBJC_CATEGORY_IMPL);
RECORD(DECL_OBJC_IMPLEMENTATION);
RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
RECORD(DECL_OBJC_PROPERTY);
RECORD(DECL_OBJC_PROPERTY_IMPL);
RECORD(DECL_FIELD);
RECORD(DECL_MS_PROPERTY);
RECORD(DECL_VAR);
RECORD(DECL_IMPLICIT_PARAM);
RECORD(DECL_PARM_VAR);
RECORD(DECL_FILE_SCOPE_ASM);
RECORD(DECL_BLOCK);
RECORD(DECL_CONTEXT_LEXICAL);
RECORD(DECL_CONTEXT_VISIBLE);
RECORD(DECL_NAMESPACE);
RECORD(DECL_NAMESPACE_ALIAS);
RECORD(DECL_USING);
RECORD(DECL_USING_SHADOW);
RECORD(DECL_USING_DIRECTIVE);
RECORD(DECL_UNRESOLVED_USING_VALUE);
RECORD(DECL_UNRESOLVED_USING_TYPENAME);
RECORD(DECL_LINKAGE_SPEC);
RECORD(DECL_CXX_RECORD);
RECORD(DECL_CXX_METHOD);
RECORD(DECL_CXX_CONSTRUCTOR);
RECORD(DECL_CXX_DESTRUCTOR);
RECORD(DECL_CXX_CONVERSION);
RECORD(DECL_ACCESS_SPEC);
RECORD(DECL_FRIEND);
RECORD(DECL_FRIEND_TEMPLATE);
RECORD(DECL_CLASS_TEMPLATE);
RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
RECORD(DECL_VAR_TEMPLATE);
RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
RECORD(DECL_FUNCTION_TEMPLATE);
RECORD(DECL_TEMPLATE_TYPE_PARM);
RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
RECORD(DECL_CONCEPT);
RECORD(DECL_TYPE_ALIAS_TEMPLATE);
RECORD(DECL_STATIC_ASSERT);
RECORD(DECL_CXX_BASE_SPECIFIERS);
RECORD(DECL_CXX_CTOR_INITIALIZERS);
RECORD(DECL_INDIRECTFIELD);
RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
RECORD(DECL_IMPORT);
RECORD(DECL_OMP_THREADPRIVATE);
RECORD(DECL_EMPTY);
RECORD(DECL_OBJC_TYPE_PARAM);
RECORD(DECL_OMP_CAPTUREDEXPR);
RECORD(DECL_PRAGMA_COMMENT);
RECORD(DECL_PRAGMA_DETECT_MISMATCH);
RECORD(DECL_OMP_DECLARE_REDUCTION);
RECORD(DECL_OMP_ALLOCATE);
// Statements and Exprs can occur in the Decls and Types block.
AddStmtsExprs(Stream, Record);
BLOCK(PREPROCESSOR_DETAIL_BLOCK);
RECORD(PPD_MACRO_EXPANSION);
RECORD(PPD_MACRO_DEFINITION);
RECORD(PPD_INCLUSION_DIRECTIVE);
// Decls and Types block.
BLOCK(EXTENSION_BLOCK);
RECORD(EXTENSION_METADATA);
BLOCK(UNHASHED_CONTROL_BLOCK);
RECORD(SIGNATURE);
RECORD(DIAGNOSTIC_OPTIONS);
RECORD(DIAG_PRAGMA_MAPPINGS);
#undef RECORD
#undef BLOCK
Stream.ExitBlock();
}
/// Prepares a path for being written to an AST file by converting it
/// to an absolute path and removing nested './'s.
///
/// \return \c true if the path was changed.
static bool cleanPathForOutput(FileManager &FileMgr,
SmallVectorImpl<char> &Path) {
bool Changed = FileMgr.makeAbsolutePath(Path);
return Changed | llvm::sys::path::remove_dots(Path);
}
/// Adjusts the given filename to only write out the portion of the
/// filename that is not part of the system root directory.
///
/// \param Filename the file name to adjust.
///
/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
/// the returned filename will be adjusted by this root directory.
///
/// \returns either the original filename (if it needs no adjustment) or the
/// adjusted filename (which points into the @p Filename parameter).
static const char *
adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
assert(Filename && "No file name to adjust?");
if (BaseDir.empty())
return Filename;
// Verify that the filename and the system root have the same prefix.
unsigned Pos = 0;
for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
if (Filename[Pos] != BaseDir[Pos])
return Filename; // Prefixes don't match.
// We hit the end of the filename before we hit the end of the system root.
if (!Filename[Pos])
return Filename;
// If there's not a path separator at the end of the base directory nor
// immediately after it, then this isn't within the base directory.
if (!llvm::sys::path::is_separator(Filename[Pos])) {
if (!llvm::sys::path::is_separator(BaseDir.back()))
return Filename;
} else {
// If the file name has a '/' at the current position, skip over the '/'.
// We distinguish relative paths from absolute paths by the
// absence of '/' at the beginning of relative paths.
//
// FIXME: This is wrong. We distinguish them by asking if the path is
// absolute, which isn't the same thing. And there might be multiple '/'s
// in a row. Use a better mechanism to indicate whether we have emitted an
// absolute or relative path.
++Pos;
}
return Filename + Pos;
}
ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
// Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
llvm::SHA1 Hasher;
Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
auto Hash = Hasher.result();
// Convert to an array [5*i32].
ASTFileSignature Signature;
auto LShift = [&](unsigned char Val, unsigned Shift) {
return (uint32_t)Val << Shift;
};
for (int I = 0; I != 5; ++I)
Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
return Signature;
}
ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
ASTContext &Context) {
// Flush first to prepare the PCM hash (signature).
Stream.FlushToWord();
auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
// Enter the block and prepare to write records.
RecordData Record;
Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
// For implicit modules, write the hash of the PCM as its signature.
ASTFileSignature Signature;
if (WritingModule &&
PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
Record.append(Signature.begin(), Signature.end());
Stream.EmitRecord(SIGNATURE, Record);
Record.clear();
}
// Diagnostic options.
const auto &Diags = Context.getDiagnostics();
const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
#include "clang/Basic/DiagnosticOptions.def"
Record.push_back(DiagOpts.Warnings.size());
for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
AddString(DiagOpts.Warnings[I], Record);
Record.push_back(DiagOpts.Remarks.size());
for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
AddString(DiagOpts.Remarks[I], Record);
// Note: we don't serialize the log or serialization file names, because they
// are generally transient files and will almost always be overridden.
Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
// Write out the diagnostic/pragma mappings.
WritePragmaDiagnosticMappings(Diags, /* isModule = */ WritingModule);
// Leave the options block.
Stream.ExitBlock();
return Signature;
}
/// Write the control block.
void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
StringRef isysroot,
const std::string &OutputFile) {
using namespace llvm;
Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
RecordData Record;
// Metadata
auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PCHHasObjectFile
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
assert((!WritingModule || isysroot.empty()) &&
"writing module as a relocatable PCH?");
{
RecordData::value_type Record[] = {
METADATA,
VERSION_MAJOR,
VERSION_MINOR,
CLANG_VERSION_MAJOR,
CLANG_VERSION_MINOR,
!isysroot.empty(),
IncludeTimestamps,
Context.getLangOpts().BuildingPCHWithObjectFile,
ASTHasCompilerErrors};
Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
getClangFullRepositoryVersion());
}
if (WritingModule) {
// Module name
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
RecordData::value_type Record[] = {MODULE_NAME};
Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
}
if (WritingModule && WritingModule->Directory) {
SmallString<128> BaseDir(WritingModule->Directory->getName());
cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
// If the home of the module is the current working directory, then we
// want to pick up the cwd of the build process loading the module, not
// our cwd, when we load this module.
if (!PP.getHeaderSearchInfo()
.getHeaderSearchOpts()
.ModuleMapFileHomeIsCwd ||
WritingModule->Directory->getName() != StringRef(".")) {
// Module directory.
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
RecordData::value_type Record[] = {MODULE_DIRECTORY};
Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
}
// Write out all other paths relative to the base directory if possible.
BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
} else if (!isysroot.empty()) {
// Write out paths relative to the sysroot if possible.
BaseDirectory = isysroot;
}
// Module map file
if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
Record.clear();
auto &Map = PP.getHeaderSearchInfo().getModuleMap();
AddPath(WritingModule->PresumedModuleMapFile.empty()
? Map.getModuleMapFileForUniquing(WritingModule)->getName()
: StringRef(WritingModule->PresumedModuleMapFile),
Record);
// Additional module map files.
if (auto *AdditionalModMaps =
Map.getAdditionalModuleMapFiles(WritingModule)) {
Record.push_back(AdditionalModMaps->size());
for (const FileEntry *F : *AdditionalModMaps)
AddPath(F->getName(), Record);
} else {
Record.push_back(0);
}
Stream.EmitRecord(MODULE_MAP_FILE, Record);
}
// Imports
if (Chain) {
serialization::ModuleManager &Mgr = Chain->getModuleManager();
Record.clear();
for (ModuleFile &M : Mgr) {
// Skip modules that weren't directly imported.
if (!M.isDirectlyImported())
continue;
Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
AddSourceLocation(M.ImportLoc, Record);
// If we have calculated signature, there is no need to store
// the size or timestamp.
Record.push_back(M.Signature ? 0 : M.File->getSize());
Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
for (auto I : M.Signature)
Record.push_back(I);
AddString(M.ModuleName, Record);
AddPath(M.FileName, Record);
}
Stream.EmitRecord(IMPORTS, Record);
}
// Write the options block.
Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
// Language options.
Record.clear();
const LangOptions &LangOpts = Context.getLangOpts();
#define LANGOPT(Name, Bits, Default, Description) \
Record.push_back(LangOpts.Name);
#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
#include "clang/Basic/LangOptions.def"
#define SANITIZER(NAME, ID) \
Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
#include "clang/Basic/Sanitizers.def"
Record.push_back(LangOpts.ModuleFeatures.size());
for (StringRef Feature : LangOpts.ModuleFeatures)
AddString(Feature, Record);
Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
AddString(LangOpts.CurrentModule, Record);
// Comment options.
Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
AddString(I, Record);
}
Record.push_back(LangOpts.CommentOpts.ParseAllComments);
// OpenMP offloading options.
Record.push_back(LangOpts.OMPTargetTriples.size());
for (auto &T : LangOpts.OMPTargetTriples)
AddString(T.getTriple(), Record);
AddString(LangOpts.OMPHostIRFile, Record);
Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
// Target options.
Record.clear();
const TargetInfo &Target = Context.getTargetInfo();
const TargetOptions &TargetOpts = Target.getTargetOpts();
AddString(TargetOpts.Triple, Record);
AddString(TargetOpts.CPU, Record);
AddString(TargetOpts.ABI, Record);
Record.push_back(TargetOpts.FeaturesAsWritten.size());
for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
AddString(TargetOpts.FeaturesAsWritten[I], Record);
}
Record.push_back(TargetOpts.Features.size());
for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
AddString(TargetOpts.Features[I], Record);
}
Stream.EmitRecord(TARGET_OPTIONS, Record);
// File system options.
Record.clear();
const FileSystemOptions &FSOpts =
Context.getSourceManager().getFileManager().getFileSystemOpts();
AddString(FSOpts.WorkingDir, Record);
Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
// Header search options.
Record.clear();
const HeaderSearchOptions &HSOpts
= PP.getHeaderSearchInfo().getHeaderSearchOpts();
AddString(HSOpts.Sysroot, Record);
// Include entries.
Record.push_back(HSOpts.UserEntries.size());
for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
AddString(Entry.Path, Record);
Record.push_back(static_cast<unsigned>(Entry.Group));
Record.push_back(Entry.IsFramework);
Record.push_back(Entry.IgnoreSysRoot);
}
// System header prefixes.
Record.push_back(HSOpts.SystemHeaderPrefixes.size());
for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
}
AddString(HSOpts.ResourceDir, Record);
AddString(HSOpts.ModuleCachePath, Record);
AddString(HSOpts.ModuleUserBuildPath, Record);
Record.push_back(HSOpts.DisableModuleHash);
Record.push_back(HSOpts.ImplicitModuleMaps);
Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
Record.push_back(HSOpts.UseBuiltinIncludes);
Record.push_back(HSOpts.UseStandardSystemIncludes);
Record.push_back(HSOpts.UseStandardCXXIncludes);
Record.push_back(HSOpts.UseLibcxx);
// Write out the specific module cache path that contains the module files.
AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
// Preprocessor options.
Record.clear();
const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
// Macro definitions.
Record.push_back(PPOpts.Macros.size());
for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
AddString(PPOpts.Macros[I].first, Record);
Record.push_back(PPOpts.Macros[I].second);
}
// Includes
Record.push_back(PPOpts.Includes.size());
for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
AddString(PPOpts.Includes[I], Record);
// Macro includes
Record.push_back(PPOpts.MacroIncludes.size());
for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
AddString(PPOpts.MacroIncludes[I], Record);
Record.push_back(PPOpts.UsePredefines);
// Detailed record is important since it is used for the module cache hash.
Record.push_back(PPOpts.DetailedRecord);
AddString(PPOpts.ImplicitPCHInclude, Record);
Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
// Leave the options block.
Stream.ExitBlock();
// Original file name and file ID
SourceManager &SM = Context.getSourceManager();
if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
Record.clear();
Record.push_back(ORIGINAL_FILE);
Record.push_back(SM.getMainFileID().getOpaqueValue());
EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
}
Record.clear();
Record.push_back(SM.getMainFileID().getOpaqueValue());
Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
// Original PCH directory
if (!OutputFile.empty() && OutputFile != "-") {
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
SmallString<128> OutputPath(OutputFile);
SM.getFileManager().makeAbsolutePath(OutputPath);
StringRef origDir = llvm::sys::path::parent_path(OutputPath);
RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
}
WriteInputFiles(Context.SourceMgr,
PP.getHeaderSearchInfo().getHeaderSearchOpts(),
PP.getLangOpts().Modules);
Stream.ExitBlock();
}
namespace {
/// An input file.
struct InputFileEntry {
const FileEntry *File;
bool IsSystemFile;
bool IsTransient;
bool BufferOverridden;
bool IsTopLevelModuleMap;
uint32_t ContentHash[2];
};
} // namespace
void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
HeaderSearchOptions &HSOpts,
bool Modules) {
using namespace llvm;
Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
// Create input-file abbreviation.
auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
// Create input file hash abbreviation.
auto IFHAbbrev = std::make_shared<BitCodeAbbrev>();
IFHAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_HASH));
IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
unsigned IFHAbbrevCode = Stream.EmitAbbrev(std::move(IFHAbbrev));
// Get all ContentCache objects for files, sorted by whether the file is a
// system one or not. System files go at the back, users files at the front.
std::deque<InputFileEntry> SortedFiles;
for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
// Get this source location entry.
const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc);
// We only care about file entries that were not overridden.
if (!SLoc->isFile())
continue;
const SrcMgr::FileInfo &File = SLoc->getFile();
const SrcMgr::ContentCache *Cache = File.getContentCache();
if (!Cache->OrigEntry)
continue;
InputFileEntry Entry;
Entry.File = Cache->OrigEntry;
Entry.IsSystemFile = isSystem(File.getFileCharacteristic());
Entry.IsTransient = Cache->IsTransient;
Entry.BufferOverridden = Cache->BufferOverridden;
Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
File.getIncludeLoc().isInvalid();
auto ContentHash = hash_code(-1);
if (PP->getHeaderSearchInfo()
.getHeaderSearchOpts()
.ValidateASTInputFilesContent) {
auto *MemBuff = Cache->getRawBuffer();
if (MemBuff)
ContentHash = hash_value(MemBuff->getBuffer());
else
// FIXME: The path should be taken from the FileEntryRef.
PP->Diag(SourceLocation(), diag::err_module_unable_to_hash_content)
<< Entry.File->getName();
}
auto CH = llvm::APInt(64, ContentHash);
Entry.ContentHash[0] =
static_cast<uint32_t>(CH.getLoBits(32).getZExtValue());
Entry.ContentHash[1] =
static_cast<uint32_t>(CH.getHiBits(32).getZExtValue());
if (Entry.IsSystemFile)
SortedFiles.push_back(Entry);
else
SortedFiles.push_front(Entry);
}
unsigned UserFilesNum = 0;
// Write out all of the input files.
std::vector<uint64_t> InputFileOffsets;
for (const auto &Entry : SortedFiles) {
uint32_t &InputFileID = InputFileIDs[Entry.File];
if (InputFileID != 0)
continue; // already recorded this file.
// Record this entry's offset.
InputFileOffsets.push_back(Stream.GetCurrentBitNo());
InputFileID = InputFileOffsets.size();
if (!Entry.IsSystemFile)
++UserFilesNum;
// Emit size/modification time for this file.
// And whether this file was overridden.
{
RecordData::value_type Record[] = {
INPUT_FILE,
InputFileOffsets.size(),
(uint64_t)Entry.File->getSize(),
(uint64_t)getTimestampForOutput(Entry.File),
Entry.BufferOverridden,
Entry.IsTransient,
Entry.IsTopLevelModuleMap};
// FIXME: The path should be taken from the FileEntryRef.
EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
}
// Emit content hash for this file.
{
RecordData::value_type Record[] = {INPUT_FILE_HASH, Entry.ContentHash[0],
Entry.ContentHash[1]};
Stream.EmitRecordWithAbbrev(IFHAbbrevCode, Record);
}
}
Stream.ExitBlock();
// Create input file offsets abbreviation.
auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
// input files
OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
// Write input file offsets.
RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
InputFileOffsets.size(), UserFilesNum};
Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
}
//===----------------------------------------------------------------------===//
// Source Manager Serialization
//===----------------------------------------------------------------------===//
/// Create an abbreviation for the SLocEntry that refers to a
/// file.
static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
// FileEntry fields.
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
return Stream.EmitAbbrev(std::move(Abbrev));
}
/// Create an abbreviation for the SLocEntry that refers to a
/// buffer.
static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
return Stream.EmitAbbrev(std::move(Abbrev));
}
/// Create an abbreviation for the SLocEntry that refers to a
/// buffer's blob.
static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
bool Compressed) {
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
: SM_SLOC_BUFFER_BLOB));
if (Compressed)
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
return Stream.EmitAbbrev(std::move(Abbrev));
}
/// Create an abbreviation for the SLocEntry that refers to a macro
/// expansion.
static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
return Stream.EmitAbbrev(std::move(Abbrev));
}
namespace {
// Trait used for the on-disk hash table of header search information.
class HeaderFileInfoTrait {
ASTWriter &Writer;
// Keep track of the framework names we've used during serialization.
SmallVector<char, 128> FrameworkStringData;
llvm::StringMap<unsigned> FrameworkNameOffset;
public:
HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
struct key_type {
StringRef Filename;
off_t Size;
time_t ModTime;
};
using key_type_ref = const key_type &;
using UnresolvedModule =
llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
struct data_type {
const HeaderFileInfo &HFI;
ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
UnresolvedModule Unresolved;
};
using data_type_ref = const data_type &;
using hash_value_type = unsigned;
using offset_type = unsigned;
hash_value_type ComputeHash(key_type_ref key) {
// The hash is based only on size/time of the file, so that the reader can
// match even when symlinking or excess path elements ("foo/../", "../")
// change the form of the name. However, complete path is still the key.
return llvm::hash_combine(key.Size, key.ModTime);
}
std::pair<unsigned, unsigned>
EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
using namespace llvm::support;
endian::Writer LE(Out, little);
unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
LE.write<uint16_t>(KeyLen);
unsigned DataLen = 1 + 2 + 4 + 4;
for (auto ModInfo : Data.KnownHeaders)
if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
DataLen += 4;
if (Data.Unresolved.getPointer())
DataLen += 4;
LE.write<uint8_t>(DataLen);
return std::make_pair(KeyLen, DataLen);
}
void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
using namespace llvm::support;
endian::Writer LE(Out, little);
LE.write<uint64_t>(key.Size);
KeyLen -= 8;
LE.write<uint64_t>(key.ModTime);
KeyLen -= 8;
Out.write(key.Filename.data(), KeyLen);
}
void EmitData(raw_ostream &Out, key_type_ref key,
data_type_ref Data, unsigned DataLen) {
using namespace llvm::support;
endian::Writer LE(Out, little);
uint64_t Start = Out.tell(); (void)Start;
unsigned char Flags = (Data.HFI.isImport << 5)
| (Data.HFI.isPragmaOnce << 4)
| (Data.HFI.DirInfo << 1)
| Data.HFI.IndexHeaderMapHeader;
LE.write<uint8_t>(Flags);
LE.write<uint16_t>(Data.HFI.NumIncludes);
if (!Data.HFI.ControllingMacro)
LE.write<uint32_t>(Data.HFI.ControllingMacroID);
else
LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
unsigned Offset = 0;
if (!Data.HFI.Framework.empty()) {
// If this header refers into a framework, save the framework name.
llvm::StringMap<unsigned>::iterator Pos
= FrameworkNameOffset.find(Data.HFI.Framework);
if (Pos == FrameworkNameOffset.end()) {
Offset = FrameworkStringData.size() + 1;
FrameworkStringData.append(Data.HFI.Framework.begin(),
Data.HFI.Framework.end());
FrameworkStringData.push_back(0);
FrameworkNameOffset[Data.HFI.Framework] = Offset;
} else
Offset = Pos->second;
}
LE.write<uint32_t>(Offset);
auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
uint32_t Value = (ModID << 2) | (unsigned)Role;
assert((Value >> 2) == ModID && "overflow in header module info");
LE.write<uint32_t>(Value);
}
};
// FIXME: If the header is excluded, we should write out some
// record of that fact.
for (auto ModInfo : Data.KnownHeaders)
EmitModule(ModInfo.getModule(), ModInfo.getRole());
if (Data.Unresolved.getPointer())
EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
assert(Out.tell() - Start == DataLen && "Wrong data length");
}
const char *strings_begin() const { return FrameworkStringData.begin(); }
const char *strings_end() const { return FrameworkStringData.end(); }
};
} // namespace
/// Write the header search block for the list of files that
///
/// \param HS The header search structure to save.
void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
HeaderFileInfoTrait GeneratorTrait(*this);
llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
SmallVector<const char *, 4> SavedStrings;
unsigned NumHeaderSearchEntries = 0;
// Find all unresolved headers for the current module. We generally will
// have resolved them before we get here, but not necessarily: we might be
// compiling a preprocessed module, where there is no requirement for the
// original files to exist any more.
const HeaderFileInfo Empty; // So we can take a reference.
if (WritingModule) {
llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
while (!Worklist.empty()) {
Module *M = Worklist.pop_back_val();
if (!M->isAvailable())
continue;
// Map to disk files where possible, to pick up any missing stat
// information. This also means we don't need to check the unresolved
// headers list when emitting resolved headers in the first loop below.
// FIXME: It'd be preferable to avoid doing this if we were given
// sufficient stat information in the module map.
HS.getModuleMap().resolveHeaderDirectives(M);
// If the file didn't exist, we can still create a module if we were given
// enough information in the module map.
for (auto U : M->MissingHeaders) {
// Check that we were given enough information to build a module
// without this file existing on disk.
if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
<< WritingModule->getFullModuleName() << U.Size.hasValue()
<< U.FileName;
continue;
}
// Form the effective relative pathname for the file.
SmallString<128> Filename(M->Directory->getName());
llvm::sys::path::append(Filename, U.FileName);
PreparePathForOutput(Filename);
StringRef FilenameDup = strdup(Filename.c_str());
SavedStrings.push_back(FilenameDup.data());
HeaderFileInfoTrait::key_type Key = {
FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
};
HeaderFileInfoTrait::data_type Data = {
Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
};
// FIXME: Deal with cases where there are multiple unresolved header
// directives in different submodules for the same header.
Generator.insert(Key, Data, GeneratorTrait);
++NumHeaderSearchEntries;
}
Worklist.append(M->submodule_begin(), M->submodule_end());
}
}
SmallVector<const FileEntry *, 16> FilesByUID;
HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
if (FilesByUID.size() > HS.header_file_size())
FilesByUID.resize(HS.header_file_size());
for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
const FileEntry *File = FilesByUID[UID];
if (!File)
continue;
// Get the file info. This will load info from the external source if
// necessary. Skip emitting this file if we have no information on it
// as a header file (in which case HFI will be null) or if it hasn't
// changed since it was loaded. Also skip it if it's for a modular header
// from a different module; in that case, we rely on the module(s)
// containing the header to provide this information.
const HeaderFileInfo *HFI =
HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
continue;
// Massage the file path into an appropriate form.
StringRef Filename = File->getName();
SmallString<128> FilenameTmp(Filename);
if (PreparePathForOutput(FilenameTmp)) {
// If we performed any translation on the file name at all, we need to
// save this string, since the generator will refer to it later.
Filename = StringRef(strdup(FilenameTmp.c_str()));
SavedStrings.push_back(Filename.data());
}
HeaderFileInfoTrait::key_type Key = {
Filename, File->getSize(), getTimestampForOutput(File)
};
HeaderFileInfoTrait::data_type Data = {
*HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
};
Generator.insert(Key, Data, GeneratorTrait);
++NumHeaderSearchEntries;
}
// Create the on-disk hash table in a buffer.
SmallString<4096> TableData;
uint32_t BucketOffset;
{
using namespace llvm::support;
llvm::raw_svector_ostream Out(TableData);
// Make sure that no bucket is at offset 0
endian::write<uint32_t>(Out, 0, little);
BucketOffset = Generator.Emit(Out, GeneratorTrait);
}
// Create a blob abbreviation
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
// Write the header search table
RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
NumHeaderSearchEntries, TableData.size()};
TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
// Free all of the strings we had to duplicate.
for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
free(const_cast<char *>(SavedStrings[I]));
}
static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
unsigned SLocBufferBlobCompressedAbbrv,
unsigned SLocBufferBlobAbbrv) {
using RecordDataType = ASTWriter::RecordData::value_type;
// Compress the buffer if possible. We expect that almost all PCM
// consumers will not want its contents.
SmallString<0> CompressedBuffer;
if (llvm::zlib::isAvailable()) {
llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
if (!E) {
RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
Blob.size() - 1};
Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
CompressedBuffer);
return;
}
llvm::consumeError(std::move(E));
}
RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
}
/// Writes the block containing the serialized form of the
/// source manager.
///
/// TODO: We should probably use an on-disk hash table (stored in a
/// blob), indexed based on the file name, so that we only create
/// entries for files that we actually need. In the common case (no
/// errors), we probably won't have to create file entries for any of
/// the files in the AST.
void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
const Preprocessor &PP) {
RecordData Record;
// Enter the source manager block.
Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
// Abbreviations for the various kinds of source-location entries.
unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
unsigned SLocBufferBlobCompressedAbbrv =
CreateSLocBufferBlobAbbrev(Stream, true);
unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
// Write out the source location entry table. We skip the first
// entry, which is always the same dummy entry.
std::vector<uint32_t> SLocEntryOffsets;
RecordData PreloadSLocs;
SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
I != N; ++I) {
// Get this source location entry.
const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
FileID FID = FileID::get(I);
assert(&SourceMgr.getSLocEntry(FID) == SLoc);
// Record the offset of this source-location entry.
SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
// Figure out which record code to use.
unsigned Code;
if (SLoc->isFile()) {
const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
if (Cache->OrigEntry) {
Code = SM_SLOC_FILE_ENTRY;
} else
Code = SM_SLOC_BUFFER_ENTRY;
} else
Code = SM_SLOC_EXPANSION_ENTRY;
Record.clear();
Record.push_back(Code);
// Starting offset of this entry within this module, so skip the dummy.
Record.push_back(SLoc->getOffset() - 2);
if (SLoc->isFile()) {
const SrcMgr::FileInfo &File = SLoc->getFile();
AddSourceLocation(File.getIncludeLoc(), Record);
Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
Record.push_back(File.hasLineDirectives());
const SrcMgr::ContentCache *Content = File.getContentCache();
bool EmitBlob = false;
if (Content->OrigEntry) {
assert(Content->OrigEntry == Content->ContentsEntry &&
"Writing to AST an overridden file is not supported");
// The source location entry is a file. Emit input file ID.
assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry");
Record.push_back(InputFileIDs[Content->OrigEntry]);
Record.push_back(File.NumCreatedFIDs);
FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
if (FDI != FileDeclIDs.end()) {
Record.push_back(FDI->second->FirstDeclIndex);
Record.push_back(FDI->second->DeclIDs.size());
} else {
Record.push_back(0);
Record.push_back(0);
}
Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
if (Content->BufferOverridden || Content->IsTransient)
EmitBlob = true;
} else {
// The source location entry is a buffer. The blob associated
// with this entry contains the contents of the buffer.
// We add one to the size so that we capture the trailing NULL
// that is required by llvm::MemoryBuffer::getMemBuffer (on
// the reader side).
const llvm::MemoryBuffer *Buffer =
Content->getBuffer(PP.getDiagnostics(), PP.getFileManager());
StringRef Name = Buffer->getBufferIdentifier();
Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
StringRef(Name.data(), Name.size() + 1));
EmitBlob = true;
if (Name == "<built-in>")
PreloadSLocs.push_back(SLocEntryOffsets.size());
}
if (EmitBlob) {
// Include the implicit terminating null character in the on-disk buffer
// if we're writing it uncompressed.
const llvm::MemoryBuffer *Buffer =
Content->getBuffer(PP.getDiagnostics(), PP.getFileManager());
StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
SLocBufferBlobAbbrv);
}
} else {
// The source location entry is a macro expansion.
const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
AddSourceLocation(Expansion.getSpellingLoc(), Record);
AddSourceLocation(Expansion.getExpansionLocStart(), Record);
AddSourceLocation(Expansion.isMacroArgExpansion()
? SourceLocation()
: Expansion.getExpansionLocEnd(),
Record);
Record.push_back(Expansion.isExpansionTokenRange());
// Compute the token length for this macro expansion.
unsigned NextOffset = SourceMgr.getNextLocalOffset();
if (I + 1 != N)
NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
Record.push_back(NextOffset - SLoc->getOffset() - 1);
Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
}
}
Stream.ExitBlock();
if (SLocEntryOffsets.empty())
return;
// Write the source-location offsets table into the AST block. This
// table is used for lazily loading source-location information.
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
{
RecordData::value_type Record[] = {
SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
bytes(SLocEntryOffsets));
}
// Write the source location entry preloads array, telling the AST
// reader which source locations entries it should load eagerly.
Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
// Write the line table. It depends on remapping working, so it must come
// after the source location offsets.
if (SourceMgr.hasLineTable()) {
LineTableInfo &LineTable = SourceMgr.getLineTable();
Record.clear();
// Emit the needed file names.
llvm::DenseMap<int, int> FilenameMap;
FilenameMap[-1] = -1; // For unspecified filenames.
for (const auto &L : LineTable) {
if (L.first.ID < 0)
continue;
for (auto &LE : L.second) {
if (FilenameMap.insert(std::make_pair(LE.FilenameID,
FilenameMap.size() - 1)).second)
AddPath(LineTable.getFilename(LE.FilenameID), Record);
}
}
Record.push_back(0);
// Emit the line entries
for (const auto &L : LineTable) {
// Only emit entries for local files.
if (L.first.ID < 0)
continue;
// Emit the file ID
Record.push_back(L.first.ID);
// Emit the line entries
Record.push_back(L.second.size());
for (const auto &LE : L.second) {
Record.push_back(LE.FileOffset);
Record.push_back(LE.LineNo);
Record.push_back(FilenameMap[LE.FilenameID]);
Record.push_back((unsigned)LE.FileKind);
Record.push_back(LE.IncludeOffset);
}
}
Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
}
}
//===----------------------------------------------------------------------===//
// Preprocessor Serialization
//===----------------------------------------------------------------------===//
static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
const Preprocessor &PP) {
if (MacroInfo *MI = MD->getMacroInfo())
if (MI->isBuiltinMacro())
return true;
if (IsModule) {
SourceLocation Loc = MD->getLocation();
if (Loc.isInvalid())
return true;
if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
return true;
}
return false;
}
/// Writes the block containing the serialized form of the
/// preprocessor.
void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
if (PPRec)
WritePreprocessorDetail(*PPRec);
RecordData Record;
RecordData ModuleMacroRecord;
// If the preprocessor __COUNTER__ value has been bumped, remember it.
if (PP.getCounterValue() != 0) {
RecordData::value_type Record[] = {PP.getCounterValue()};
Stream.EmitRecord(PP_COUNTER_VALUE, Record);
}
if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
assert(!IsModule);
auto SkipInfo = PP.getPreambleSkipInfo();
if (SkipInfo.hasValue()) {
Record.push_back(true);
AddSourceLocation(SkipInfo->HashTokenLoc, Record);
AddSourceLocation(SkipInfo->IfTokenLoc, Record);
Record.push_back(SkipInfo->FoundNonSkipPortion);
Record.push_back(SkipInfo->FoundElse);
AddSourceLocation(SkipInfo->ElseLoc, Record);
} else {
Record.push_back(false);
}
for (const auto &Cond : PP.getPreambleConditionalStack()) {
AddSourceLocation(Cond.IfLoc, Record);
Record.push_back(Cond.WasSkipping);
Record.push_back(Cond.FoundNonSkip);
Record.push_back(Cond.FoundElse);
}
Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
Record.clear();
}
// Enter the preprocessor block.
Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
// If the AST file contains __DATE__ or __TIME__ emit a warning about this.
// FIXME: Include a location for the use, and say which one was used.
if (PP.SawDateOrTime())
PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
// Loop over all the macro directives that are live at the end of the file,
// emitting each to the PP section.
// Construct the list of identifiers with macro directives that need to be
// serialized.
SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
for (auto &Id : PP.getIdentifierTable())
if (Id.second->hadMacroDefinition() &&
(!Id.second->isFromAST() ||
Id.second->hasChangedSinceDeserialization()))
MacroIdentifiers.push_back(Id.second);
// Sort the set of macro definitions that need to be serialized by the
// name of the macro, to provide a stable ordering.
llvm::sort(MacroIdentifiers, llvm::deref<std::less<>>());
// Emit the macro directives as a list and associate the offset with the
// identifier they belong to.
for (const IdentifierInfo *Name : MacroIdentifiers) {
MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
auto StartOffset = Stream.GetCurrentBitNo();
// Emit the macro directives in reverse source order.
for (; MD; MD = MD->getPrevious()) {
// Once we hit an ignored macro, we're done: the rest of the chain
// will all be ignored macros.
if (shouldIgnoreMacro(MD, IsModule, PP))
break;
AddSourceLocation(MD->getLocation(), Record);
Record.push_back(MD->getKind());
if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
Record.push_back(getMacroRef(DefMD->getInfo(), Name));
} else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
Record.push_back(VisMD->isPublic());
}
}
// Write out any exported module macros.
bool EmittedModuleMacros = false;
// We write out exported module macros for PCH as well.
auto Leafs = PP.getLeafModuleMacros(Name);
SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
llvm::DenseMap<ModuleMacro*, unsigned> Visits;
while (!Worklist.empty()) {
auto *Macro = Worklist.pop_back_val();
// Emit a record indicating this submodule exports this macro.
ModuleMacroRecord.push_back(
getSubmoduleID(Macro->getOwningModule()));
ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
for (auto *M : Macro->overrides())
ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
ModuleMacroRecord.clear();
// Enqueue overridden macros once we've visited all their ancestors.
for (auto *M : Macro->overrides())
if (++Visits[M] == M->getNumOverridingMacros())
Worklist.push_back(M);
EmittedModuleMacros = true;
}
if (Record.empty() && !EmittedModuleMacros)
continue;
IdentMacroDirectivesOffsetMap[Name] = StartOffset;
Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
Record.clear();
}
/// Offsets of each of the macros into the bitstream, indexed by
/// the local macro ID
///
/// For each identifier that is associated with a macro, this map
/// provides the offset into the bitstream where that macro is
/// defined.
std::vector<uint32_t> MacroOffsets;
for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
MacroInfo *MI = MacroInfosToEmit[I].MI;
MacroID ID = MacroInfosToEmit[I].ID;
if (ID < FirstMacroID) {
assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?");
continue;
}
// Record the local offset of this macro.
unsigned Index = ID - FirstMacroID;
if (Index == MacroOffsets.size())
MacroOffsets.push_back(Stream.GetCurrentBitNo());
else {
if (Index > MacroOffsets.size())
MacroOffsets.resize(Index + 1);
MacroOffsets[Index] = Stream.GetCurrentBitNo();
}
AddIdentifierRef(Name, Record);
AddSourceLocation(MI->getDefinitionLoc(), Record);
AddSourceLocation(MI->getDefinitionEndLoc(), Record);
Record.push_back(MI->isUsed());
Record.push_back(MI->isUsedForHeaderGuard());
unsigned Code;
if (MI->isObjectLike()) {
Code = PP_MACRO_OBJECT_LIKE;
} else {
Code = PP_MACRO_FUNCTION_LIKE;
Record.push_back(MI->isC99Varargs());
Record.push_back(MI->isGNUVarargs());
Record.push_back(MI->hasCommaPasting());
Record.push_back(MI->getNumParams());
for (const IdentifierInfo *Param : MI->params())
AddIdentifierRef(Param, Record);
}
// If we have a detailed preprocessing record, record the macro definition
// ID that corresponds to this macro.
if (PPRec)
Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
Stream.EmitRecord(Code, Record);
Record.clear();
// Emit the tokens array.
for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
// Note that we know that the preprocessor does not have any annotation
// tokens in it because they are created by the parser, and thus can't
// be in a macro definition.
const Token &Tok = MI->getReplacementToken(TokNo);
AddToken(Tok, Record);
Stream.EmitRecord(PP_TOKEN, Record);
Record.clear();
}
++NumMacros;
}
Stream.ExitBlock();
// Write the offsets table for macro IDs.
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
{
RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
FirstMacroID - NUM_PREDEF_MACRO_IDS};
Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
}
}
void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
if (PPRec.local_begin() == PPRec.local_end())
return;
SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
// Enter the preprocessor block.
Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
// If the preprocessor has a preprocessing record, emit it.
unsigned NumPreprocessingRecords = 0;
using namespace llvm;
// Set up the abbreviation for
unsigned InclusionAbbrev = 0;
{
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
}
unsigned FirstPreprocessorEntityID
= (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
+ NUM_PREDEF_PP_ENTITY_IDS;
unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
RecordData Record;
for (PreprocessingRecord::iterator E = PPRec.local_begin(),
EEnd = PPRec.local_end();
E != EEnd;
(void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
Record.clear();
PreprocessedEntityOffsets.push_back(
PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
// Record this macro definition's ID.
MacroDefinitions[MD] = NextPreprocessorEntityID;
AddIdentifierRef(MD->getName(), Record);
Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
continue;
}
if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
Record.push_back(ME->isBuiltinMacro());
if (ME->isBuiltinMacro())
AddIdentifierRef(ME->getName(), Record);
else
Record.push_back(MacroDefinitions[ME->getDefinition()]);
Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
continue;
}
if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
Record.push_back(PPD_INCLUSION_DIRECTIVE);
Record.push_back(ID->getFileName().size());
Record.push_back(ID->wasInQuotes());
Record.push_back(static_cast<unsigned>(ID->getKind()));
Record.push_back(ID->importedModule());
SmallString<64> Buffer;
Buffer += ID->getFileName();
// Check that the FileEntry is not null because it was not resolved and
// we create a PCH even with compiler errors.
if (ID->getFile())
Buffer += ID->getFile()->getName();
Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
continue;
}
llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter");
}
Stream.ExitBlock();
// Write the offsets table for the preprocessing record.
if (NumPreprocessingRecords > 0) {
assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords);
// Write the offsets table for identifier IDs.
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
FirstPreprocessorEntityID -
NUM_PREDEF_PP_ENTITY_IDS};
Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
bytes(PreprocessedEntityOffsets));
}
// Write the skipped region table for the preprocessing record.
ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
if (SkippedRanges.size() > 0) {
std::vector<PPSkippedRange> SerializedSkippedRanges;
SerializedSkippedRanges.reserve(SkippedRanges.size());
for (auto const& Range : SkippedRanges)
SerializedSkippedRanges.emplace_back(Range);
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Record.clear();
Record.push_back(PPD_SKIPPED_RANGES);
Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
bytes(SerializedSkippedRanges));
}
}
unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
if (!Mod)
return 0;
llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
if (Known != SubmoduleIDs.end())
return Known->second;
auto *Top = Mod->getTopLevelModule();
if (Top != WritingModule &&
(getLangOpts().CompilingPCH ||
!Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
return 0;
return SubmoduleIDs[Mod] = NextSubmoduleID++;
}
unsigned ASTWriter::getSubmoduleID(Module *Mod) {
// FIXME: This can easily happen, if we have a reference to a submodule that
// did not result in us loading a module file for that submodule. For
// instance, a cross-top-level-module 'conflict' declaration will hit this.
unsigned ID = getLocalOrImportedSubmoduleID(Mod);
assert((ID || !Mod) &&
"asked for module ID for non-local, non-imported module");
return ID;
}
/// Compute the number of modules within the given tree (including the
/// given module).
static unsigned getNumberOfModules(Module *Mod) {
unsigned ChildModules = 0;
for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
Sub != SubEnd; ++Sub)
ChildModules += getNumberOfModules(*Sub);
return ChildModules + 1;
}
void ASTWriter::WriteSubmodules(Module *WritingModule) {
// Enter the submodule description block.
Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
// Write the abbreviations needed for the submodules block.
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
// Write the submodule metadata block.
RecordData::value_type Record[] = {
getNumberOfModules(WritingModule),
FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
Stream.EmitRecord(SUBMODULE_METADATA, Record);
// Write all of the submodules.
std::queue<Module *> Q;
Q.push(WritingModule);
while (!Q.empty()) {
Module *Mod = Q.front();
Q.pop();
unsigned ID = getSubmoduleID(Mod);
uint64_t ParentID = 0;
if (Mod->Parent) {
assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?");
ParentID = SubmoduleIDs[Mod->Parent];
}
// Emit the definition of the block.
{
RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
ID,
ParentID,
(RecordData::value_type)Mod->Kind,
Mod->IsFramework,
Mod->IsExplicit,
Mod->IsSystem,
Mod->IsExternC,
Mod->InferSubmodules,
Mod->InferExplicitSubmodules,
Mod->InferExportWildcard,
Mod->ConfigMacrosExhaustive,
Mod->ModuleMapIsPrivate};
Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
}
// Emit the requirements.
for (const auto &R : Mod->Requirements) {
RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
}
// Emit the umbrella header, if there is one.
if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
UmbrellaHeader.NameAsWritten);
} else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
UmbrellaDir.NameAsWritten);
}
// Emit the headers.
struct {
unsigned RecordKind;
unsigned Abbrev;
Module::HeaderKind HeaderKind;
} HeaderLists[] = {
{SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
{SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
{SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
{SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
Module::HK_PrivateTextual},
{SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
};
for (auto &HL : HeaderLists) {
RecordData::value_type Record[] = {HL.RecordKind};
for (auto &H : Mod->Headers[HL.HeaderKind])
Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
}
// Emit the top headers.
{
auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
for (auto *H : TopHeaders)
Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
}
// Emit the imports.
if (!Mod->Imports.empty()) {
RecordData Record;
for (auto *I : Mod->Imports)
Record.push_back(getSubmoduleID(I));
Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
}
// Emit the exports.
if (!Mod->Exports.empty()) {
RecordData Record;
for (const auto &E : Mod->Exports) {
// FIXME: This may fail; we don't require that all exported modules
// are local or imported.
Record.push_back(getSubmoduleID(E.getPointer()));
Record.push_back(E.getInt());
}
Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
}
//FIXME: How do we emit the 'use'd modules? They may not be submodules.
// Might be unnecessary as use declarations are only used to build the
// module itself.
// Emit the link libraries.
for (const auto &LL : Mod->LinkLibraries) {
RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
LL.IsFramework};
Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
}
// Emit the conflicts.
for (const auto &C : Mod->Conflicts) {
// FIXME: This may fail; we don't require that all conflicting modules
// are local or imported.
RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
getSubmoduleID(C.Other)};
Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
}
// Emit the configuration macros.
for (const auto &CM : Mod->ConfigMacros) {
RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
}
// Emit the initializers, if any.
RecordData Inits;
for (Decl *D : Context->getModuleInitializers(Mod))
Inits.push_back(GetDeclRef(D));
if (!Inits.empty())
Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
// Emit the name of the re-exported module, if any.
if (!Mod->ExportAsModule.empty()) {
RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
}
// Queue up the submodules of this module.
for (auto *M : Mod->submodules())
Q.push(M);
}
Stream.ExitBlock();
assert((NextSubmoduleID - FirstSubmoduleID ==
getNumberOfModules(WritingModule)) &&
"Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?");
}
void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
bool isModule) {
llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
DiagStateIDMap;
unsigned CurrID = 0;
RecordData Record;
auto EncodeDiagStateFlags =
[](const DiagnosticsEngine::DiagState *DS) -> unsigned {
unsigned Result = (unsigned)DS->ExtBehavior;
for (unsigned Val :
{(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
(unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
(unsigned)DS->SuppressSystemWarnings})
Result = (Result << 1) | Val;
return Result;
};
unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
Record.push_back(Flags);
auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
bool IncludeNonPragmaStates) {
// Ensure that the diagnostic state wasn't modified since it was created.
// We will not correctly round-trip this information otherwise.
assert(Flags == EncodeDiagStateFlags(State) &&
"diag state flags vary in single AST file");
unsigned &DiagStateID = DiagStateIDMap[State];
Record.push_back(DiagStateID);
if (DiagStateID == 0) {
DiagStateID = ++CurrID;
// Add a placeholder for the number of mappings.
auto SizeIdx = Record.size();
Record.emplace_back();
for (const auto &I : *State) {
if (I.second.isPragma() || IncludeNonPragmaStates) {
Record.push_back(I.first);
Record.push_back(I.second.serialize());
}
}
// Update the placeholder.
Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
}
};
AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
// Reserve a spot for the number of locations with state transitions.
auto NumLocationsIdx = Record.size();
Record.emplace_back();
// Emit the state transitions.
unsigned NumLocations = 0;
for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
if (!FileIDAndFile.first.isValid() ||
!FileIDAndFile.second.HasLocalTransitions)
continue;
++NumLocations;
SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
assert(!Loc.isInvalid() && "start loc for valid FileID is invalid");
AddSourceLocation(Loc, Record);
Record.push_back(FileIDAndFile.second.StateTransitions.size());
for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
Record.push_back(StatePoint.Offset);
AddDiagState(StatePoint.State, false);
}
}
// Backpatch the number of locations.
Record[NumLocationsIdx] = NumLocations;
// Emit CurDiagStateLoc. Do it last in order to match source order.
//
// This also protects against a hypothetical corner case with simulating
// -Werror settings for implicit modules in the ASTReader, where reading
// CurDiagState out of context could change whether warning pragmas are
// treated as errors.
AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
}
//===----------------------------------------------------------------------===//
// Type Serialization
//===----------------------------------------------------------------------===//
/// Write the representation of a type to the AST stream.
void ASTWriter::WriteType(QualType T) {
TypeIdx &IdxRef = TypeIdxs[T];
if (IdxRef.getIndex() == 0) // we haven't seen this type before.
IdxRef = TypeIdx(NextTypeID++);
TypeIdx Idx = IdxRef;
assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST");
RecordData Record;
// Emit the type's representation.
ASTTypeWriter W(*this, Record);
W.Visit(T);
uint64_t Offset = W.Emit();
// Record the offset for this type.
unsigned Index = Idx.getIndex() - FirstTypeID;
if (TypeOffsets.size() == Index)
TypeOffsets.push_back(Offset);
else if (TypeOffsets.size() < Index) {
TypeOffsets.resize(Index + 1);
TypeOffsets[Index] = Offset;
} else {
llvm_unreachable("Types emitted in wrong order");
}
}
//===----------------------------------------------------------------------===//
// Declaration Serialization
//===----------------------------------------------------------------------===//
/// Write the block containing all of the declaration IDs
/// lexically declared within the given DeclContext.
///
/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
/// bitstream, or 0 if no block was written.
uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
DeclContext *DC) {
if (DC->decls_empty())
return 0;
uint64_t Offset = Stream.GetCurrentBitNo();
SmallVector<uint32_t, 128> KindDeclPairs;
for (const auto *D : DC->decls()) {
KindDeclPairs.push_back(D->getKind());
KindDeclPairs.push_back(GetDeclRef(D));
}
++NumLexicalDeclContexts;
RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
bytes(KindDeclPairs));
return Offset;
}
void ASTWriter::WriteTypeDeclOffsets() {
using namespace llvm;
// Write the type offsets array
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
{
RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
FirstTypeID - NUM_PREDEF_TYPE_IDS};
Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
}
// Write the declaration offsets array
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
{
RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
FirstDeclID - NUM_PREDEF_DECL_IDS};
Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
}
}
void ASTWriter::WriteFileDeclIDsMap() {
using namespace llvm;
SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
FileDeclIDs.begin(), FileDeclIDs.end());
llvm::sort(SortedFileDeclIDs, llvm::less_first());
// Join the vectors of DeclIDs from all files.
SmallVector<DeclID, 256> FileGroupedDeclIDs;
for (auto &FileDeclEntry : SortedFileDeclIDs) {
DeclIDInFileInfo &Info = *FileDeclEntry.second;
Info.FirstDeclIndex = FileGroupedDeclIDs.size();
for (auto &LocDeclEntry : Info.DeclIDs)
FileGroupedDeclIDs.push_back(LocDeclEntry.second);
}
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
RecordData::value_type Record[] = {FILE_SORTED_DECLS,
FileGroupedDeclIDs.size()};
Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
}
void ASTWriter::WriteComments() {
Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
return;
RecordData Record;
for (const auto &FO : Context->Comments.OrderedComments) {
for (const auto &OC : FO.second) {
const RawComment *I = OC.second;
Record.clear();
AddSourceRange(I->getSourceRange(), Record);
Record.push_back(I->getKind());
Record.push_back(I->isTrailingComment());
Record.push_back(I->isAlmostTrailingComment());
Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
}
}
}
//===----------------------------------------------------------------------===//
// Global Method Pool and Selector Serialization
//===----------------------------------------------------------------------===//
namespace {
// Trait used for the on-disk hash table used in the method pool.
class ASTMethodPoolTrait {
ASTWriter &Writer;
public:
using key_type = Selector;
using key_type_ref = key_type;
struct data_type {
SelectorID ID;
ObjCMethodList Instance, Factory;
};
using data_type_ref = const data_type &;
using hash_value_type = unsigned;
using offset_type = unsigned;
explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
static hash_value_type ComputeHash(Selector Sel) {
return serialization::ComputeHash(Sel);
}
std::pair<unsigned, unsigned>
EmitKeyDataLength(raw_ostream& Out, Selector Sel,
data_type_ref Methods) {
using namespace llvm::support;
endian::Writer LE(Out, little);
unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
LE.write<uint16_t>(KeyLen);
unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
for (const ObjCMethodList *Method = &Methods.Instance; Method;
Method = Method->getNext())
if (Method->getMethod())
DataLen += 4;
for (const ObjCMethodList *Method = &Methods.Factory; Method;
Method = Method->getNext())
if (Method->getMethod())
DataLen += 4;
LE.write<uint16_t>(DataLen);
return std::make_pair(KeyLen, DataLen);
}
void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
using namespace llvm::support;
endian::Writer LE(Out, little);
uint64_t Start = Out.tell();
assert((Start >> 32) == 0 && "Selector key offset too large");
Writer.SetSelectorOffset(Sel, Start);
unsigned N = Sel.getNumArgs();
LE.write<uint16_t>(N);
if (N == 0)
N = 1;
for (unsigned I = 0; I != N; ++I)
LE.write<uint32_t>(
Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
}
void EmitData(raw_ostream& Out, key_type_ref,
data_type_ref Methods, unsigned DataLen) {
using namespace llvm::support;
endian::Writer LE(Out, little);
uint64_t Start = Out.tell(); (void)Start;
LE.write<uint32_t>(Methods.ID);
unsigned NumInstanceMethods = 0;
for (const ObjCMethodList *Method = &Methods.Instance; Method;
Method = Method->getNext())
if (Method->getMethod())
++NumInstanceMethods;
unsigned NumFactoryMethods = 0;
for (const ObjCMethodList *Method = &Methods.Factory; Method;
Method = Method->getNext())
if (Method->getMethod())
++NumFactoryMethods;
unsigned InstanceBits = Methods.Instance.getBits();
assert(InstanceBits < 4);
unsigned InstanceHasMoreThanOneDeclBit =
Methods.Instance.hasMoreThanOneDecl();
unsigned FullInstanceBits = (NumInstanceMethods << 3) |
(InstanceHasMoreThanOneDeclBit << 2) |
InstanceBits;
unsigned FactoryBits = Methods.Factory.getBits();
assert(FactoryBits < 4);
unsigned FactoryHasMoreThanOneDeclBit =
Methods.Factory.hasMoreThanOneDecl();
unsigned FullFactoryBits = (NumFactoryMethods << 3) |
(FactoryHasMoreThanOneDeclBit << 2) |
FactoryBits;
LE.write<uint16_t>(FullInstanceBits);
LE.write<uint16_t>(FullFactoryBits);
for (const ObjCMethodList *Method = &Methods.Instance; Method;
Method = Method->getNext())
if (Method->getMethod())
LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
for (const ObjCMethodList *Method = &Methods.Factory; Method;
Method = Method->getNext())
if (Method->getMethod())
LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
assert(Out.tell() - Start == DataLen && "Data length is wrong");
}
};
} // namespace
/// Write ObjC data: selectors and the method pool.
///
/// The method pool contains both instance and factory methods, stored
/// in an on-disk hash table indexed by the selector. The hash table also
/// contains an empty entry for every other selector known to Sema.
void ASTWriter::WriteSelectors(Sema &SemaRef) {
using namespace llvm;
// Do we have to do anything at all?
if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
return;
unsigned NumTableEntries = 0;
// Create and write out the blob that contains selectors and the method pool.
{
llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
ASTMethodPoolTrait Trait(*this);
// Create the on-disk hash table representation. We walk through every
// selector we've seen and look it up in the method pool.
SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
for (auto &SelectorAndID : SelectorIDs) {
Selector S = SelectorAndID.first;
SelectorID ID = SelectorAndID.second;
Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
ASTMethodPoolTrait::data_type Data = {
ID,
ObjCMethodList(),
ObjCMethodList()
};
if (F != SemaRef.MethodPool.end()) {
Data.Instance = F->second.first;
Data.Factory = F->second.second;
}
// Only write this selector if it's not in an existing AST or something
// changed.
if (Chain && ID < FirstSelectorID) {
// Selector already exists. Did it change?
bool changed = false;
for (ObjCMethodList *M = &Data.Instance;
!changed && M && M->getMethod(); M = M->getNext()) {
if (!M->getMethod()->isFromASTFile())
changed = true;
}
for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
M = M->getNext()) {
if (!M->getMethod()->isFromASTFile())
changed = true;
}
if (!changed)
continue;
} else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
// A new method pool entry.
++NumTableEntries;
}
Generator.insert(S, Data, Trait);
}
// Create the on-disk hash table in a buffer.
SmallString<4096> MethodPool;
uint32_t BucketOffset;
{
using namespace llvm::support;
ASTMethodPoolTrait Trait(*this);
llvm::raw_svector_ostream Out(MethodPool);
// Make sure that no bucket is at offset 0
endian::write<uint32_t>(Out, 0, little);
BucketOffset = Generator.Emit(Out, Trait);
}
// Create a blob abbreviation
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
// Write the method pool
{
RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
NumTableEntries};
Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
}
// Create a blob abbreviation for the selector table offsets.
Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
// Write the selector offsets table.
{
RecordData::value_type Record[] = {
SELECTOR_OFFSETS, SelectorOffsets.size(),
FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
bytes(SelectorOffsets));
}
}
}
/// Write the selectors referenced in @selector expression into AST file.
void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
using namespace llvm;
if (SemaRef.ReferencedSelectors.empty())
return;
RecordData Record;
ASTRecordWriter Writer(*this, Record);
// Note: this writes out all references even for a dependent AST. But it is
// very tricky to fix, and given that @selector shouldn't really appear in
// headers, probably not worth it. It's not a correctness issue.
for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
Selector Sel = SelectorAndLocation.first;
SourceLocation Loc = SelectorAndLocation.second;
Writer.AddSelectorRef(Sel);
Writer.AddSourceLocation(Loc);
}
Writer.Emit(REFERENCED_SELECTOR_POOL);
}
//===----------------------------------------------------------------------===//
// Identifier Table Serialization
//===----------------------------------------------------------------------===//
/// Determine the declaration that should be put into the name lookup table to
/// represent the given declaration in this module. This is usually D itself,
/// but if D was imported and merged into a local declaration, we want the most
/// recent local declaration instead. The chosen declaration will be the most
/// recent declaration in any module that imports this one.
static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
NamedDecl *D) {
if (!LangOpts.Modules || !D->isFromASTFile())
return D;
if (Decl *Redecl = D->getPreviousDecl()) {
// For Redeclarable decls, a prior declaration might be local.
for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
// If we find a local decl, we're done.
if (!Redecl->isFromASTFile()) {
// Exception: in very rare cases (for injected-class-names), not all
// redeclarations are in the same semantic context. Skip ones in a
// different context. They don't go in this lookup table at all.
if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
D->getDeclContext()->getRedeclContext()))
continue;
return cast<NamedDecl>(Redecl);
}
// If we find a decl from a (chained-)PCH stop since we won't find a
// local one.
if (Redecl->getOwningModuleID() == 0)
break;
}
} else if (Decl *First = D->getCanonicalDecl()) {
// For Mergeable decls, the first decl might be local.
if (!First->isFromASTFile())
return cast<NamedDecl>(First);
}
// All declarations are imported. Our most recent declaration will also be
// the most recent one in anyone who imports us.
return D;
}
namespace {
class ASTIdentifierTableTrait {
ASTWriter &Writer;
Preprocessor &PP;
IdentifierResolver &IdResolver;
bool IsModule;
bool NeedDecls;
ASTWriter::RecordData *InterestingIdentifierOffsets;
/// Determines whether this is an "interesting" identifier that needs a
/// full IdentifierInfo structure written into the hash table. Notably, this
/// doesn't check whether the name has macros defined; use PublicMacroIterator
/// to check that.
bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
if (MacroOffset ||
II->isPoisoned() ||
(IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
II->hasRevertedTokenIDToIdentifier() ||
(NeedDecls && II->getFETokenInfo()))
return true;
return false;
}
public:
using key_type = IdentifierInfo *;
using key_type_ref = key_type;
using data_type = IdentID;
using data_type_ref = data_type;
using hash_value_type = unsigned;
using offset_type = unsigned;
ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
IdentifierResolver &IdResolver, bool IsModule,
ASTWriter::RecordData *InterestingIdentifierOffsets)
: Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
bool needDecls() const { return NeedDecls; }
static hash_value_type ComputeHash(const IdentifierInfo* II) {
return llvm::djbHash(II->getName());
}
bool isInterestingIdentifier(const IdentifierInfo *II) {
auto MacroOffset = Writer.getMacroDirectivesOffset(II);
return isInterestingIdentifier(II, MacroOffset);
}
bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
return isInterestingIdentifier(II, 0);
}
std::pair<unsigned, unsigned>
EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
unsigned KeyLen = II->getLength() + 1;
unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
auto MacroOffset = Writer.getMacroDirectivesOffset(II);
if (isInterestingIdentifier(II, MacroOffset)) {
DataLen += 2; // 2 bytes for builtin ID
DataLen += 2; // 2 bytes for flags
if (MacroOffset)
DataLen += 4; // MacroDirectives offset.
if (NeedDecls) {
for (IdentifierResolver::iterator D = IdResolver.begin(II),
DEnd = IdResolver.end();
D != DEnd; ++D)
DataLen += 4;
}
}
using namespace llvm::support;
endian::Writer LE(Out, little);
assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen);
LE.write<uint16_t>(DataLen);
// We emit the key length after the data length so that every
// string is preceded by a 16-bit length. This matches the PTH
// format for storing identifiers.
LE.write<uint16_t>(KeyLen);
return std::make_pair(KeyLen, DataLen);
}
void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
unsigned KeyLen) {
// Record the location of the key data. This is used when generating
// the mapping from persistent IDs to strings.
Writer.SetIdentifierOffset(II, Out.tell());
// Emit the offset of the key/data length information to the interesting
// identifiers table if necessary.
if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
InterestingIdentifierOffsets->push_back(Out.tell() - 4);
Out.write(II->getNameStart(), KeyLen);
}
void EmitData(raw_ostream& Out, IdentifierInfo* II,
IdentID ID, unsigned) {
using namespace llvm::support;
endian::Writer LE(Out, little);
auto MacroOffset = Writer.getMacroDirectivesOffset(II);
if (!isInterestingIdentifier(II, MacroOffset)) {
LE.write<uint32_t>(ID << 1);
return;
}
LE.write<uint32_t>((ID << 1) | 0x01);
uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.");
LE.write<uint16_t>(Bits);
Bits = 0;
bool HadMacroDefinition = MacroOffset != 0;
Bits = (Bits << 1) | unsigned(HadMacroDefinition);
Bits = (Bits << 1) | unsigned(II->isExtensionToken());
Bits = (Bits << 1) | unsigned(II->isPoisoned());
Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
LE.write<uint16_t>(Bits);
if (HadMacroDefinition)
LE.write<uint32_t>(MacroOffset);
if (NeedDecls) {
// Emit the declaration IDs in reverse order, because the
// IdentifierResolver provides the declarations as they would be
// visible (e.g., the function "stat" would come before the struct
// "stat"), but the ASTReader adds declarations to the end of the list
// (so we need to see the struct "stat" before the function "stat").
// Only emit declarations that aren't from a chained PCH, though.
SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
IdResolver.end());
for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
DEnd = Decls.rend();
D != DEnd; ++D)
LE.write<uint32_t>(
Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
}
}
};
} // namespace
/// Write the identifier table into the AST file.
///
/// The identifier table consists of a blob containing string data
/// (the actual identifiers themselves) and a separate "offsets" index
/// that maps identifier IDs to locations within the blob.
void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
IdentifierResolver &IdResolver,
bool IsModule) {
using namespace llvm;
RecordData InterestingIdents;
// Create and write out the blob that contains the identifier
// strings.
{
llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
ASTIdentifierTableTrait Trait(
*this, PP, IdResolver, IsModule,
(getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
// Look for any identifiers that were named while processing the
// headers, but are otherwise not needed. We add these to the hash
// table to enable checking of the predefines buffer in the case
// where the user adds new macro definitions when building the AST
// file.
SmallVector<const IdentifierInfo *, 128> IIs;
for (const auto &ID : PP.getIdentifierTable())
IIs.push_back(ID.second);
// Sort the identifiers lexicographically before getting them references so
// that their order is stable.
llvm::sort(IIs, llvm::deref<std::less<>>());
for (const IdentifierInfo *II : IIs)
if (Trait.isInterestingNonMacroIdentifier(II))
getIdentifierRef(II);
// Create the on-disk hash table representation. We only store offsets
// for identifiers that appear here for the first time.
IdentifierOffsets.resize(NextIdentID - FirstIdentID);
for (auto IdentIDPair : IdentifierIDs) {
auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
IdentID ID = IdentIDPair.second;
assert(II && "NULL identifier in identifier table");
// Write out identifiers if either the ID is local or the identifier has
// changed since it was loaded.
if (ID >= FirstIdentID || !Chain || !II->isFromAST()
|| II->hasChangedSinceDeserialization() ||
(Trait.needDecls() &&
II->hasFETokenInfoChangedSinceDeserialization()))
Generator.insert(II, ID, Trait);
}
// Create the on-disk hash table in a buffer.
SmallString<4096> IdentifierTable;
uint32_t BucketOffset;
{
using namespace llvm::support;
llvm::raw_svector_ostream Out(IdentifierTable);
// Make sure that no bucket is at offset 0
endian::write<uint32_t>(Out, 0, little);
BucketOffset = Generator.Emit(Out, Trait);
}
// Create a blob abbreviation
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
// Write the identifier table
RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
}
// Write the offsets table for identifier IDs.
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
#ifndef NDEBUG
for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
assert(IdentifierOffsets[I] && "Missing identifier offset?");
#endif
RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
IdentifierOffsets.size(),
FirstIdentID - NUM_PREDEF_IDENT_IDS};
Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
bytes(IdentifierOffsets));
// In C++, write the list of interesting identifiers (those that are
// defined as macros, poisoned, or similar unusual things).
if (!InterestingIdents.empty())
Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
}
//===----------------------------------------------------------------------===//
// DeclContext's Name Lookup Table Serialization
//===----------------------------------------------------------------------===//
namespace {
// Trait used for the on-disk hash table used in the method pool.
class ASTDeclContextNameLookupTrait {
ASTWriter &Writer;
llvm::SmallVector<DeclID, 64> DeclIDs;
public:
using key_type = DeclarationNameKey;
using key_type_ref = key_type;
/// A start and end index into DeclIDs, representing a sequence of decls.
using data_type = std::pair<unsigned, unsigned>;
using data_type_ref = const data_type &;
using hash_value_type = unsigned;
using offset_type = unsigned;
explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
template<typename Coll>
data_type getData(const Coll &Decls) {
unsigned Start = DeclIDs.size();
for (NamedDecl *D : Decls) {
DeclIDs.push_back(
Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
}
return std::make_pair(Start, DeclIDs.size());
}
data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
unsigned Start = DeclIDs.size();
for (auto ID : FromReader)
DeclIDs.push_back(ID);
return std::make_pair(Start, DeclIDs.size());
}
static bool EqualKey(key_type_ref a, key_type_ref b) {
return a == b;
}
hash_value_type ComputeHash(DeclarationNameKey Name) {
return Name.getHash();
}
void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
assert(Writer.hasChain() &&
"have reference to loaded module file but no chain?");
using namespace llvm::support;
endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
}
std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
DeclarationNameKey Name,
data_type_ref Lookup) {
using namespace llvm::support;
endian::Writer LE(Out, little);
unsigned KeyLen = 1;
switch (Name.getKind()) {
case DeclarationName::Identifier:
case DeclarationName::ObjCZeroArgSelector:
case DeclarationName::ObjCOneArgSelector:
case DeclarationName::ObjCMultiArgSelector:
case DeclarationName::CXXLiteralOperatorName:
case DeclarationName::CXXDeductionGuideName:
KeyLen += 4;
break;
case DeclarationName::CXXOperatorName:
KeyLen += 1;
break;
case DeclarationName::CXXConstructorName:
case DeclarationName::CXXDestructorName:
case DeclarationName::CXXConversionFunctionName:
case DeclarationName::CXXUsingDirective:
break;
}
LE.write<uint16_t>(KeyLen);
// 4 bytes for each DeclID.
unsigned DataLen = 4 * (Lookup.second - Lookup.first);
assert(uint16_t(DataLen) == DataLen &&
"too many decls for serialized lookup result");
LE.write<uint16_t>(DataLen);
return std::make_pair(KeyLen, DataLen);
}
void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
using namespace llvm::support;
endian::Writer LE(Out, little);
LE.write<uint8_t>(Name.getKind());
switch (Name.getKind()) {
case DeclarationName::Identifier:
case DeclarationName::CXXLiteralOperatorName:
case DeclarationName::CXXDeductionGuideName:
LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
return;
case DeclarationName::ObjCZeroArgSelector:
case DeclarationName::ObjCOneArgSelector:
case DeclarationName::ObjCMultiArgSelector:
LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
return;
case DeclarationName::CXXOperatorName:
assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
"Invalid operator?");
LE.write<uint8_t>(Name.getOperatorKind());
return;
case DeclarationName::CXXConstructorName:
case DeclarationName::CXXDestructorName:
case DeclarationName::CXXConversionFunctionName:
case DeclarationName::CXXUsingDirective:
return;
}
llvm_unreachable("Invalid name kind?");
}
void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
unsigned DataLen) {
using namespace llvm::support;
endian::Writer LE(Out, little);
uint64_t Start = Out.tell(); (void)Start;
for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
LE.write<uint32_t>(DeclIDs[I]);
assert(Out.tell() - Start == DataLen && "Data length is wrong");
}
};
} // namespace
bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
DeclContext *DC) {
return Result.hasExternalDecls() &&
DC->hasNeedToReconcileExternalVisibleStorage();
}
bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
DeclContext *DC) {
for (auto *D : Result.getLookupResult())
if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
return false;
return true;
}
void
ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
llvm::SmallVectorImpl<char> &LookupTable) {
assert(!ConstDC->hasLazyLocalLexicalLookups() &&
!ConstDC->hasLazyExternalLexicalLookups() &&
"must call buildLookups first");
// FIXME: We need to build the lookups table, which is logically const.
auto *DC = const_cast<DeclContext*>(ConstDC);
assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table");
// Create the on-disk hash table representation.
MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
ASTDeclContextNameLookupTrait> Generator;
ASTDeclContextNameLookupTrait Trait(*this);
// The first step is to collect the declaration names which we need to
// serialize into the name lookup table, and to collect them in a stable
// order.
SmallVector<DeclarationName, 16> Names;
// We also build up small sets of the constructor and conversion function
// names which are visible.
llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
for (auto &Lookup : *DC->buildLookup()) {
auto &Name = Lookup.first;
auto &Result = Lookup.second;
// If there are no local declarations in our lookup result, we
// don't need to write an entry for the name at all. If we can't
// write out a lookup set without performing more deserialization,
// just skip this entry.
if (isLookupResultExternal(Result, DC) &&
isLookupResultEntirelyExternal(Result, DC))
continue;
// We also skip empty results. If any of the results could be external and
// the currently available results are empty, then all of the results are
// external and we skip it above. So the only way we get here with an empty
// results is when no results could have been external *and* we have
// external results.
//
// FIXME: While we might want to start emitting on-disk entries for negative
// lookups into a decl context as an optimization, today we *have* to skip
// them because there are names with empty lookup results in decl contexts
// which we can't emit in any stable ordering: we lookup constructors and
// conversion functions in the enclosing namespace scope creating empty
// results for them. This in almost certainly a bug in Clang's name lookup,
// but that is likely to be hard or impossible to fix and so we tolerate it
// here by omitting lookups with empty results.
if (Lookup.second.getLookupResult().empty())
continue;
switch (Lookup.first.getNameKind()) {
default:
Names.push_back(Lookup.first);
break;
case DeclarationName::CXXConstructorName:
assert(isa<CXXRecordDecl>(DC) &&
"Cannot have a constructor name outside of a class!");
ConstructorNameSet.insert(Name);
break;
case DeclarationName::CXXConversionFunctionName:
assert(isa<CXXRecordDecl>(DC) &&
"Cannot have a conversion function name outside of a class!");
ConversionNameSet.insert(Name);
break;
}
}
// Sort the names into a stable order.
llvm::sort(Names);
if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
// We need to establish an ordering of constructor and conversion function
// names, and they don't have an intrinsic ordering.
// First we try the easy case by forming the current context's constructor
// name and adding that name first. This is a very useful optimization to
// avoid walking the lexical declarations in many cases, and it also
// handles the only case where a constructor name can come from some other
// lexical context -- when that name is an implicit constructor merged from
// another declaration in the redecl chain. Any non-implicit constructor or
// conversion function which doesn't occur in all the lexical contexts
// would be an ODR violation.
auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
Context->getCanonicalType(Context->getRecordType(D)));
if (ConstructorNameSet.erase(ImplicitCtorName))
Names.push_back(ImplicitCtorName);
// If we still have constructors or conversion functions, we walk all the
// names in the decl and add the constructors and conversion functions
// which are visible in the order they lexically occur within the context.
if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
auto Name = ChildND->getDeclName();
switch (Name.getNameKind()) {
default:
continue;
case DeclarationName::CXXConstructorName:
if (ConstructorNameSet.erase(Name))
Names.push_back(Name);
break;
case DeclarationName::CXXConversionFunctionName:
if (ConversionNameSet.erase(Name))
Names.push_back(Name);
break;
}
if (ConstructorNameSet.empty() && ConversionNameSet.empty())
break;
}
assert(ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the "
"lexical members of the context.");
assert(ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all "
"the lexical members of the context.");
}
// Next we need to do a lookup with each name into this decl context to fully
// populate any results from external sources. We don't actually use the
// results of these lookups because we only want to use the results after all
// results have been loaded and the pointers into them will be stable.
for (auto &Name : Names)
DC->lookup(Name);
// Now we need to insert the results for each name into the hash table. For
// constructor names and conversion function names, we actually need to merge
// all of the results for them into one list of results each and insert
// those.
SmallVector<NamedDecl *, 8> ConstructorDecls;
SmallVector<NamedDecl *, 8> ConversionDecls;
// Now loop over the names, either inserting them or appending for the two
// special cases.
for (auto &Name : Names) {
DeclContext::lookup_result Result = DC->noload_lookup(Name);
switch (Name.getNameKind()) {
default:
Generator.insert(Name, Trait.getData(Result), Trait);
break;
case DeclarationName::CXXConstructorName:
ConstructorDecls.append(Result.begin(), Result.end());
break;
case DeclarationName::CXXConversionFunctionName:
ConversionDecls.append(Result.begin(), Result.end());
break;
}
}
// Handle our two special cases if we ended up having any. We arbitrarily use
// the first declaration's name here because the name itself isn't part of
// the key, only the kind of name is used.
if (!ConstructorDecls.empty())
Generator.insert(ConstructorDecls.front()->getDeclName(),
Trait.getData(ConstructorDecls), Trait);
if (!ConversionDecls.empty())
Generator.insert(ConversionDecls.front()->getDeclName(),
Trait.getData(ConversionDecls), Trait);
// Create the on-disk hash table. Also emit the existing imported and
// merged table if there is one.
auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
}
/// Write the block containing all of the declaration IDs
/// visible from the given DeclContext.
///
/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
/// bitstream, or 0 if no block was written.
uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
DeclContext *DC) {
// If we imported a key declaration of this namespace, write the visible
// lookup results as an update record for it rather than including them
// on this declaration. We will only look at key declarations on reload.
if (isa<NamespaceDecl>(DC) && Chain &&
Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
// Only do this once, for the first local declaration of the namespace.
for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
Prev = Prev->getPreviousDecl())
if (!Prev->isFromASTFile())
return 0;
// Note that we need to emit an update record for the primary context.
UpdatedDeclContexts.insert(DC->getPrimaryContext());
// Make sure all visible decls are written. They will be recorded later. We
// do this using a side data structure so we can sort the names into
// a deterministic order.
StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
LookupResults;
if (Map) {
LookupResults.reserve(Map->size());
for (auto &Entry : *Map)
LookupResults.push_back(
std::make_pair(Entry.first, Entry.second.getLookupResult()));
}
llvm::sort(LookupResults, llvm::less_first());
for (auto &NameAndResult : LookupResults) {
DeclarationName Name = NameAndResult.first;
DeclContext::lookup_result Result = NameAndResult.second;
if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
// We have to work around a name lookup bug here where negative lookup
// results for these names get cached in namespace lookup tables (these
// names should never be looked up in a namespace).
assert(Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!");
continue;
}
for (NamedDecl *ND : Result)
if (!ND->isFromASTFile())
GetDeclRef(ND);
}
return 0;
}
if (DC->getPrimaryContext() != DC)
return 0;
// Skip contexts which don't support name lookup.
if (!DC->isLookupContext())
return 0;
// If not in C++, we perform name lookup for the translation unit via the
// IdentifierInfo chains, don't bother to build a visible-declarations table.
if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
return 0;
// Serialize the contents of the mapping used for lookup. Note that,
// although we have two very different code paths, the serialized
// representation is the same for both cases: a declaration name,
// followed by a size, followed by references to the visible
// declarations that have that name.
uint64_t Offset = Stream.GetCurrentBitNo();
StoredDeclsMap *Map = DC->buildLookup();
if (!Map || Map->empty())
return 0;
// Create the on-disk hash table in a buffer.
SmallString<4096> LookupTable;
GenerateNameLookupTable(DC, LookupTable);
// Write the lookup table
RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
LookupTable);
++NumVisibleDeclContexts;
return Offset;
}
/// Write an UPDATE_VISIBLE block for the given context.
///
/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
/// DeclContext in a dependent AST file. As such, they only exist for the TU
/// (in C++), for namespaces, and for classes with forward-declared unscoped
/// enumeration members (in C++11).
void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
StoredDeclsMap *Map = DC->getLookupPtr();
if (!Map || Map->empty())
return;
// Create the on-disk hash table in a buffer.
SmallString<4096> LookupTable;
GenerateNameLookupTable(DC, LookupTable);
// If we're updating a namespace, select a key declaration as the key for the
// update record; those are the only ones that will be checked on reload.
if (isa<NamespaceDecl>(DC))
DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
// Write the lookup table
RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
}
/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
RecordData::value_type Record[] = {Opts.getInt()};
Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
}
/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
if (!SemaRef.Context.getLangOpts().OpenCL)
return;
const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
RecordData Record;
for (const auto &I:Opts.OptMap) {
AddString(I.getKey(), Record);
auto V = I.getValue();
Record.push_back(V.Supported ? 1 : 0);
Record.push_back(V.Enabled ? 1 : 0);
Record.push_back(V.Avail);
Record.push_back(V.Core);
}
Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
}
void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
if (!SemaRef.Context.getLangOpts().OpenCL)
return;
// Sort the elements of the map OpenCLTypeExtMap by TypeIDs,
// without copying them.
const llvm::DenseMap<const Type *, std::set<std::string>> &OpenCLTypeExtMap =
SemaRef.OpenCLTypeExtMap;
using ElementTy = std::pair<TypeID, const std::set<std::string> *>;
llvm::SmallVector<ElementTy, 8> StableOpenCLTypeExtMap;
StableOpenCLTypeExtMap.reserve(OpenCLTypeExtMap.size());
for (const auto &I : OpenCLTypeExtMap)
StableOpenCLTypeExtMap.emplace_back(
getTypeID(I.first->getCanonicalTypeInternal()), &I.second);
auto CompareByTypeID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
return E1.first < E2.first;
};
llvm::sort(StableOpenCLTypeExtMap, CompareByTypeID);
RecordData Record;
for (const ElementTy &E : StableOpenCLTypeExtMap) {
Record.push_back(E.first); // TypeID
const std::set<std::string> *ExtSet = E.second;
Record.push_back(static_cast<unsigned>(ExtSet->size()));
for (const std::string &Ext : *ExtSet)
AddString(Ext, Record);
}
Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
}
void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
if (!SemaRef.Context.getLangOpts().OpenCL)
return;
// Sort the elements of the map OpenCLDeclExtMap by DeclIDs,
// without copying them.
const llvm::DenseMap<const Decl *, std::set<std::string>> &OpenCLDeclExtMap =
SemaRef.OpenCLDeclExtMap;
using ElementTy = std::pair<DeclID, const std::set<std::string> *>;
llvm::SmallVector<ElementTy, 8> StableOpenCLDeclExtMap;
StableOpenCLDeclExtMap.reserve(OpenCLDeclExtMap.size());
for (const auto &I : OpenCLDeclExtMap)
StableOpenCLDeclExtMap.emplace_back(getDeclID(I.first), &I.second);
auto CompareByDeclID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
return E1.first < E2.first;
};
llvm::sort(StableOpenCLDeclExtMap, CompareByDeclID);
RecordData Record;
for (const ElementTy &E : StableOpenCLDeclExtMap) {
Record.push_back(E.first); // DeclID
const std::set<std::string> *ExtSet = E.second;
Record.push_back(static_cast<unsigned>(ExtSet->size()));
for (const std::string &Ext : *ExtSet)
AddString(Ext, Record);
}
Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
}
void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
}
}
void ASTWriter::WriteObjCCategories() {
SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
RecordData Categories;
for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
unsigned Size = 0;
unsigned StartIndex = Categories.size();
ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
// Allocate space for the size.
Categories.push_back(0);
// Add the categories.
for (ObjCInterfaceDecl::known_categories_iterator
Cat = Class->known_categories_begin(),
CatEnd = Class->known_categories_end();
Cat != CatEnd; ++Cat, ++Size) {
assert(getDeclID(*Cat) != 0 && "Bogus category");
AddDeclRef(*Cat, Categories);
}
// Update the size.
Categories[StartIndex] = Size;
// Record this interface -> category map.
ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
CategoriesMap.push_back(CatInfo);
}
// Sort the categories map by the definition ID, since the reader will be
// performing binary searches on this information.
llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
// Emit the categories map.
using namespace llvm;
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
Stream.EmitRecordWithBlob(AbbrevID, Record,
reinterpret_cast<char *>(CategoriesMap.data()),
CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
// Emit the category lists.
Stream.EmitRecord(OBJC_CATEGORIES, Categories);
}
void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
if (LPTMap.empty())
return;
RecordData Record;
for (auto &LPTMapEntry : LPTMap) {
const FunctionDecl *FD = LPTMapEntry.first;
LateParsedTemplate &LPT = *LPTMapEntry.second;
AddDeclRef(FD, Record);
AddDeclRef(LPT.D, Record);
Record.push_back(LPT.Toks.size());
for (const auto &Tok : LPT.Toks) {
AddToken(Tok, Record);
}
}
Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
}
/// Write the state of 'pragma clang optimize' at the end of the module.
void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
RecordData Record;
SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
AddSourceLocation(PragmaLoc, Record);
Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
}
/// Write the state of 'pragma ms_struct' at the end of the module.
void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
RecordData Record;
Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
}
/// Write the state of 'pragma pointers_to_members' at the end of the
//module.
void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
RecordData Record;
Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
}
/// Write the state of 'pragma pack' at the end of the module.
void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
// Don't serialize pragma pack state for modules, since it should only take
// effect on a per-submodule basis.
if (WritingModule)
return;
RecordData Record;
Record.push_back(SemaRef.PackStack.CurrentValue);
AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
Record.push_back(SemaRef.PackStack.Stack.size());
for (const auto &StackEntry : SemaRef.PackStack.Stack) {
Record.push_back(StackEntry.Value);
AddSourceLocation(StackEntry.PragmaLocation, Record);
AddSourceLocation(StackEntry.PragmaPushLocation, Record);
AddString(StackEntry.StackSlotLabel, Record);
}
Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
}
void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
ModuleFileExtensionWriter &Writer) {
// Enter the extension block.
Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
// Emit the metadata record abbreviation.
auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
// Emit the metadata record.
RecordData Record;
auto Metadata = Writer.getExtension()->getExtensionMetadata();
Record.push_back(EXTENSION_METADATA);
Record.push_back(Metadata.MajorVersion);
Record.push_back(Metadata.MinorVersion);
Record.push_back(Metadata.BlockName.size());
Record.push_back(Metadata.UserInfo.size());
SmallString<64> Buffer;
Buffer += Metadata.BlockName;
Buffer += Metadata.UserInfo;
Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
// Emit the contents of the extension block.
Writer.writeExtensionContents(SemaRef, Stream);
// Exit the extension block.
Stream.ExitBlock();
}
//===----------------------------------------------------------------------===//
// General Serialization Routines
//===----------------------------------------------------------------------===//
void ASTRecordWriter::AddAttr(const Attr *A) {
auto &Record = *this;
if (!A)
return Record.push_back(0);
Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
Record.AddIdentifierRef(A->getAttrName());
Record.AddIdentifierRef(A->getScopeName());
Record.AddSourceRange(A->getRange());
Record.AddSourceLocation(A->getScopeLoc());
Record.push_back(A->getParsedKind());
Record.push_back(A->getSyntax());
Record.push_back(A->getAttributeSpellingListIndexRaw());
#include "clang/Serialization/AttrPCHWrite.inc"
}
/// Emit the list of attributes to the specified record.
void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
push_back(Attrs.size());
for (const auto *A : Attrs)
AddAttr(A);
}
void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
AddSourceLocation(Tok.getLocation(), Record);
Record.push_back(Tok.getLength());
// FIXME: When reading literal tokens, reconstruct the literal pointer
// if it is needed.
AddIdentifierRef(Tok.getIdentifierInfo(), Record);
// FIXME: Should translate token kind to a stable encoding.
Record.push_back(Tok.getKind());
// FIXME: Should translate token flags to a stable encoding.
Record.push_back(Tok.getFlags());
}
void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
Record.push_back(Str.size());
Record.insert(Record.end(), Str.begin(), Str.end());
}
bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
assert(Context && "should have context when outputting path");
bool Changed =
cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
// Remove a prefix to make the path relative, if relevant.
const char *PathBegin = Path.data();
const char *PathPtr =
adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
if (PathPtr != PathBegin) {
Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
Changed = true;
}
return Changed;
}
void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
SmallString<128> FilePath(Path);
PreparePathForOutput(FilePath);
AddString(FilePath, Record);
}
void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
StringRef Path) {
SmallString<128> FilePath(Path);
PreparePathForOutput(FilePath);
Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
}
void ASTWriter::AddVersionTuple(const VersionTuple &Version,
RecordDataImpl &Record) {
Record.push_back(Version.getMajor());
if (Optional<unsigned> Minor = Version.getMinor())
Record.push_back(*Minor + 1);
else
Record.push_back(0);
if (Optional<unsigned> Subminor = Version.getSubminor())
Record.push_back(*Subminor + 1);
else
Record.push_back(0);
}
/// Note that the identifier II occurs at the given offset
/// within the identifier table.
void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
IdentID ID = IdentifierIDs[II];
// Only store offsets new to this AST file. Other identifier names are looked
// up earlier in the chain and thus don't need an offset.
if (ID >= FirstIdentID)
IdentifierOffsets[ID - FirstIdentID] = Offset;
}
/// Note that the selector Sel occurs at the given offset
/// within the method pool/selector table.
void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
unsigned ID = SelectorIDs[Sel];
assert(ID && "Unknown selector");
// Don't record offsets for selectors that are also available in a different
// file.
if (ID < FirstSelectorID)
return;
SelectorOffsets[ID - FirstSelectorID] = Offset;
}
ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
SmallVectorImpl<char> &Buffer,
InMemoryModuleCache &ModuleCache,
ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
bool IncludeTimestamps)
: Stream(Stream), Buffer(Buffer), ModuleCache(ModuleCache),
IncludeTimestamps(IncludeTimestamps) {
for (const auto &Ext : Extensions) {
if (auto Writer = Ext->createExtensionWriter(*this))
ModuleFileExtensionWriters.push_back(std::move(Writer));
}
}
ASTWriter::~ASTWriter() {
llvm::DeleteContainerSeconds(FileDeclIDs);
}
const LangOptions &ASTWriter::getLangOpts() const {
assert(WritingAST && "can't determine lang opts when not writing AST");
return Context->getLangOpts();
}
time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
return IncludeTimestamps ? E->getModificationTime() : 0;
}
ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
const std::string &OutputFile,
Module *WritingModule, StringRef isysroot,
bool hasErrors,
bool ShouldCacheASTInMemory) {
WritingAST = true;
ASTHasCompilerErrors = hasErrors;
// Emit the file header.
Stream.Emit((unsigned)'C', 8);
Stream.Emit((unsigned)'P', 8);
Stream.Emit((unsigned)'C', 8);
Stream.Emit((unsigned)'H', 8);
WriteBlockInfoBlock();
Context = &SemaRef.Context;
PP = &SemaRef.PP;
this->WritingModule = WritingModule;
ASTFileSignature Signature =
WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
Context = nullptr;
PP = nullptr;
this->WritingModule = nullptr;
this->BaseDirectory.clear();
WritingAST = false;
if (ShouldCacheASTInMemory) {
// Construct MemoryBuffer and update buffer manager.
ModuleCache.addBuiltPCM(OutputFile,
llvm::MemoryBuffer::getMemBufferCopy(
StringRef(Buffer.begin(), Buffer.size())));
}
return Signature;
}
template<typename Vector>
static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
ASTWriter::RecordData &Record) {
for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
I != E; ++I) {
Writer.AddDeclRef(*I, Record);
}
}
ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
const std::string &OutputFile,
Module *WritingModule) {
using namespace llvm;
bool isModule = WritingModule != nullptr;
// Make sure that the AST reader knows to finalize itself.
if (Chain)
Chain->finalizeForWriting();
ASTContext &Context = SemaRef.Context;
Preprocessor &PP = SemaRef.PP;
// Set up predefined declaration IDs.
auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
if (D) {
assert(D->isCanonicalDecl() && "predefined decl is not canonical");
DeclIDs[D] = ID;
}
};
RegisterPredefDecl(Context.getTranslationUnitDecl(),
PREDEF_DECL_TRANSLATION_UNIT_ID);
RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
RegisterPredefDecl(Context.ObjCProtocolClassDecl,
PREDEF_DECL_OBJC_PROTOCOL_ID);
RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
PREDEF_DECL_OBJC_INSTANCETYPE_ID);
RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
RegisterPredefDecl(Context.BuiltinMSVaListDecl,
PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
RegisterPredefDecl(Context.MakeIntegerSeqDecl,
PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
RegisterPredefDecl(Context.CFConstantStringTypeDecl,
PREDEF_DECL_CF_CONSTANT_STRING_ID);
RegisterPredefDecl(Context.CFConstantStringTagDecl,
PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
RegisterPredefDecl(Context.TypePackElementDecl,
PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
// Build a record containing all of the tentative definitions in this file, in
// TentativeDefinitions order. Generally, this record will be empty for
// headers.
RecordData TentativeDefinitions;
AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
// Build a record containing all of the file scoped decls in this file.
RecordData UnusedFileScopedDecls;
if (!isModule)
AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
UnusedFileScopedDecls);
// Build a record containing all of the delegating constructors we still need
// to resolve.
RecordData DelegatingCtorDecls;
if (!isModule)
AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
// Write the set of weak, undeclared identifiers. We always write the
// entire table, since later PCH files in a PCH chain are only interested in
// the results at the end of the chain.
RecordData WeakUndeclaredIdentifiers;
for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
IdentifierInfo *II = WeakUndeclaredIdentifier.first;
WeakInfo &WI = WeakUndeclaredIdentifier.second;
AddIdentifierRef(II, WeakUndeclaredIdentifiers);
AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
WeakUndeclaredIdentifiers.push_back(WI.getUsed());
}
// Build a record containing all of the ext_vector declarations.
RecordData ExtVectorDecls;
AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
// Build a record containing all of the VTable uses information.
RecordData VTableUses;
if (!SemaRef.VTableUses.empty()) {
for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
}
}
// Build a record containing all of the UnusedLocalTypedefNameCandidates.
RecordData UnusedLocalTypedefNameCandidates;
for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
// Build a record containing all of pending implicit instantiations.
RecordData PendingInstantiations;
for (const auto &I : SemaRef.PendingInstantiations) {
AddDeclRef(I.first, PendingInstantiations);
AddSourceLocation(I.second, PendingInstantiations);
}
assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&
"There are local ones at end of translation unit!");
// Build a record containing some declaration references.
RecordData SemaDeclRefs;
if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
}
RecordData CUDASpecialDeclRefs;
if (Context.getcudaConfigureCallDecl()) {
AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
}
// Build a record containing all of the known namespaces.
RecordData KnownNamespaces;
for (const auto &I : SemaRef.KnownNamespaces) {
if (!I.second)
AddDeclRef(I.first, KnownNamespaces);
}
// Build a record of all used, undefined objects that require definitions.
RecordData UndefinedButUsed;
SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
SemaRef.getUndefinedButUsed(Undefined);
for (const auto &I : Undefined) {
AddDeclRef(I.first, UndefinedButUsed);
AddSourceLocation(I.second, UndefinedButUsed);
}
// Build a record containing all delete-expressions that we would like to
// analyze later in AST.
RecordData DeleteExprsToAnalyze;
if (!isModule) {
for (const auto &DeleteExprsInfo :
SemaRef.getMismatchingDeleteExpressions()) {
AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
for (const auto &DeleteLoc : DeleteExprsInfo.second) {
AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
DeleteExprsToAnalyze.push_back(DeleteLoc.second);
}
}
}
// Write the control block
WriteControlBlock(PP, Context, isysroot, OutputFile);
// Write the remaining AST contents.
Stream.EnterSubblock(AST_BLOCK_ID, 5);
// This is so that older clang versions, before the introduction
// of the control block, can read and reject the newer PCH format.
{
RecordData Record = {VERSION_MAJOR};
Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
}
// Create a lexical update block containing all of the declarations in the
// translation unit that do not come from other AST files.
const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
for (const auto *D : TU->noload_decls()) {
if (!D->isFromASTFile()) {
NewGlobalKindDeclPairs.push_back(D->getKind());
NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
}
}
auto Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
{
RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
bytes(NewGlobalKindDeclPairs));
}
// And a visible updates block for the translation unit.
Abv = std::make_shared<BitCodeAbbrev>();
Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
WriteDeclContextVisibleUpdate(TU);
// If we have any extern "C" names, write out a visible update for them.
if (Context.ExternCContext)
WriteDeclContextVisibleUpdate(Context.ExternCContext);
// If the translation unit has an anonymous namespace, and we don't already
// have an update block for it, write it as an update block.
// FIXME: Why do we not do this if there's already an update block?
if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
if (Record.empty())
Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
}
// Add update records for all mangling numbers and static local numbers.
// These aren't really update records, but this is a convenient way of
// tagging this rare extra data onto the declarations.
for (const auto &Number : Context.MangleNumbers)
if (!Number.first->isFromASTFile())
DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
Number.second));
for (const auto &Number : Context.StaticLocalNumbers)
if (!Number.first->isFromASTFile())
DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
Number.second));
// Make sure visible decls, added to DeclContexts previously loaded from
// an AST file, are registered for serialization. Likewise for template
// specializations added to imported templates.
for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
GetDeclRef(I);
}
// Make sure all decls associated with an identifier are registered for
// serialization, if we're storing decls with identifiers.
if (!WritingModule || !getLangOpts().CPlusPlus) {
llvm::SmallVector<const IdentifierInfo*, 256> IIs;
for (const auto &ID : PP.getIdentifierTable()) {
const IdentifierInfo *II = ID.second;
if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
IIs.push_back(II);
}
// Sort the identifiers to visit based on their name.
llvm::sort(IIs, llvm::deref<std::less<>>());
for (const IdentifierInfo *II : IIs) {
for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
DEnd = SemaRef.IdResolver.end();
D != DEnd; ++D) {
GetDeclRef(*D);
}
}
}
// For method pool in the module, if it contains an entry for a selector,
// the entry should be complete, containing everything introduced by that
// module and all modules it imports. It's possible that the entry is out of
// date, so we need to pull in the new content here.
// It's possible that updateOutOfDateSelector can update SelectorIDs. To be
// safe, we copy all selectors out.
llvm::SmallVector<Selector, 256> AllSelectors;
for (auto &SelectorAndID : SelectorIDs)
AllSelectors.push_back(SelectorAndID.first);
for (auto &Selector : AllSelectors)
SemaRef.updateOutOfDateSelector(Selector);
// Form the record of special types.
RecordData SpecialTypes;
AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
AddTypeRef(Context.getFILEType(), SpecialTypes);
AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
AddTypeRef(Context.getucontext_tType(), SpecialTypes);
if (Chain) {
// Write the mapping information describing our module dependencies and how
// each of those modules were mapped into our own offset/ID space, so that
// the reader can build the appropriate mapping to its own offset/ID space.
// The map consists solely of a blob with the following format:
// *(module-kind:i8
// module-name-len:i16 module-name:len*i8
// source-location-offset:i32
// identifier-id:i32
// preprocessed-entity-id:i32
// macro-definition-id:i32
// submodule-id:i32
// selector-id:i32
// declaration-id:i32
// c++-base-specifiers-id:i32
// type-id:i32)
//
// module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
// MK_ExplicitModule, then the module-name is the module name. Otherwise,
// it is the module file name.
auto Abbrev = std::make_shared<BitCodeAbbrev>();
Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
SmallString<2048> Buffer;
{
llvm::raw_svector_ostream Out(Buffer);
for (ModuleFile &M : Chain->ModuleMgr) {
using namespace llvm::support;
endian::Writer LE(Out, little);
LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
StringRef Name =
M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
? M.ModuleName
: M.FileName;
LE.write<uint16_t>(Name.size());
Out.write(Name.data(), Name.size());
// Note: if a base ID was uint max, it would not be possible to load
// another module after it or have more than one entity inside it.
uint32_t None = std::numeric_limits<uint32_t>::max();
auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high");
if (ShouldWrite)
LE.write<uint32_t>(BaseID);
else
LE.write<uint32_t>(None);
};
// These values should be unique within a chain, since they will be read
// as keys into ContinuousRangeMaps.
writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
writeBaseIDOrNone(M.BasePreprocessedEntityID,
M.NumPreprocessedEntities);
writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
}
}
RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
Buffer.data(), Buffer.size());
}
RecordData DeclUpdatesOffsetsRecord;
// Keep writing types, declarations, and declaration update records
// until we've emitted all of them.
Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
WriteTypeAbbrevs();
WriteDeclAbbrevs();
do {
WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
while (!DeclTypesToEmit.empty()) {
DeclOrType DOT = DeclTypesToEmit.front();
DeclTypesToEmit.pop();
if (DOT.isType())
WriteType(DOT.getType());
else
WriteDecl(Context, DOT.getDecl());
}
} while (!DeclUpdates.empty());
Stream.ExitBlock();
DoneWritingDeclsAndTypes = true;
// These things can only be done once we've written out decls and types.
WriteTypeDeclOffsets();
if (!DeclUpdatesOffsetsRecord.empty())
Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
WriteFileDeclIDsMap();
WriteSourceManagerBlock(Context.getSourceManager(), PP);
WriteComments();
WritePreprocessor(PP, isModule);
WriteHeaderSearch(PP.getHeaderSearchInfo());
WriteSelectors(SemaRef);
WriteReferencedSelectorsPool(SemaRef);
WriteLateParsedTemplates(SemaRef);
WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
WriteFPPragmaOptions(SemaRef.getFPOptions());
WriteOpenCLExtensions(SemaRef);
WriteOpenCLExtensionTypes(SemaRef);
WriteCUDAPragmas(SemaRef);
// If we're emitting a module, write out the submodule information.
if (WritingModule)
WriteSubmodules(WritingModule);
// We need to have information about submodules to correctly deserialize
// decls from OpenCLExtensionDecls block
WriteOpenCLExtensionDecls(SemaRef);
Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
// Write the record containing external, unnamed definitions.
if (!EagerlyDeserializedDecls.empty())
Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
if (!ModularCodegenDecls.empty())
Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
// Write the record containing tentative definitions.
if (!TentativeDefinitions.empty())
Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
// Write the record containing unused file scoped decls.
if (!UnusedFileScopedDecls.empty())
Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
// Write the record containing weak undeclared identifiers.
if (!WeakUndeclaredIdentifiers.empty())
Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
WeakUndeclaredIdentifiers);
// Write the record containing ext_vector type names.
if (!ExtVectorDecls.empty())
Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
// Write the record containing VTable uses information.
if (!VTableUses.empty())
Stream.EmitRecord(VTABLE_USES, VTableUses);
// Write the record containing potentially unused local typedefs.
if (!UnusedLocalTypedefNameCandidates.empty())
Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
UnusedLocalTypedefNameCandidates);
// Write the record containing pending implicit instantiations.
if (!PendingInstantiations.empty())
Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
// Write the record containing declaration references of Sema.
if (!SemaDeclRefs.empty())
Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
// Write the record containing CUDA-specific declaration references.
if (!CUDASpecialDeclRefs.empty())
Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
// Write the delegating constructors.
if (!DelegatingCtorDecls.empty())
Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
// Write the known namespaces.
if (!KnownNamespaces.empty())
Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
// Write the undefined internal functions and variables, and inline functions.
if (!UndefinedButUsed.empty())
Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
if (!DeleteExprsToAnalyze.empty())
Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
// Write the visible updates to DeclContexts.
for (auto *DC : UpdatedDeclContexts)
WriteDeclContextVisibleUpdate(DC);
if (!WritingModule) {
// Write the submodules that were imported, if any.
struct ModuleInfo {
uint64_t ID;
Module *M;
ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
};
llvm::SmallVector<ModuleInfo, 64> Imports;
for (const auto *I : Context.local_imports()) {
assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end());
Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
I->getImportedModule()));
}
if (!Imports.empty()) {
auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
return A.ID < B.ID;
};
auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
return A.ID == B.ID;
};
// Sort and deduplicate module IDs.
llvm::sort(Imports, Cmp);
Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
Imports.end());
RecordData ImportedModules;
for (const auto &Import : Imports) {
ImportedModules.push_back(Import.ID);
// FIXME: If the module has macros imported then later has declarations
// imported, this location won't be the right one as a location for the
// declaration imports.
AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
}
Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
}
}
WriteObjCCategories();
if(!WritingModule) {
WriteOptimizePragmaOptions(SemaRef);
WriteMSStructPragmaOptions(SemaRef);
WriteMSPointersToMembersPragmaOptions(SemaRef);
}
WritePackPragmaOptions(SemaRef);
// Some simple statistics
RecordData::value_type Record[] = {
NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
Stream.EmitRecord(STATISTICS, Record);
Stream.ExitBlock();
// Write the module file extension blocks.
for (const auto &ExtWriter : ModuleFileExtensionWriters)
WriteModuleFileExtension(SemaRef, *ExtWriter);
return writeUnhashedControlBlock(PP, Context);
}
void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
if (DeclUpdates.empty())
return;
DeclUpdateMap LocalUpdates;
LocalUpdates.swap(DeclUpdates);
for (auto &DeclUpdate : LocalUpdates) {
const Decl *D = DeclUpdate.first;
bool HasUpdatedBody = false;
RecordData RecordData;
ASTRecordWriter Record(*this, RecordData);
for (auto &Update : DeclUpdate.second) {
DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
// An updated body is emitted last, so that the reader doesn't need
// to skip over the lazy body to reach statements for other records.
if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
HasUpdatedBody = true;
else
Record.push_back(Kind);
switch (Kind) {
case UPD_CXX_ADDED_IMPLICIT_MEMBER:
case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
assert(Update.getDecl() && "no decl to add?");
Record.push_back(GetDeclRef(Update.getDecl()));
break;
case UPD_CXX_ADDED_FUNCTION_DEFINITION:
break;
case UPD_CXX_POINT_OF_INSTANTIATION:
// FIXME: Do we need to also save the template specialization kind here?
Record.AddSourceLocation(Update.getLoc());
break;
case UPD_CXX_ADDED_VAR_DEFINITION: {
const VarDecl *VD = cast<VarDecl>(D);
Record.push_back(VD->isInline());
Record.push_back(VD->isInlineSpecified());
if (VD->getInit()) {
Record.push_back(!VD->isInitKnownICE() ? 1
: (VD->isInitICE() ? 3 : 2));
Record.AddStmt(const_cast<Expr*>(VD->getInit()));
} else {
Record.push_back(0);
}
break;
}
case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
Record.AddStmt(const_cast<Expr *>(
cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
break;
case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
Record.AddStmt(
cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
break;
case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
auto *RD = cast<CXXRecordDecl>(D);
UpdatedDeclContexts.insert(RD->getPrimaryContext());
Record.push_back(RD->isParamDestroyedInCallee());
Record.push_back(RD->getArgPassingRestrictions());
Record.AddCXXDefinitionData(RD);
Record.AddOffset(WriteDeclContextLexicalBlock(
*Context, const_cast<CXXRecordDecl *>(RD)));
// This state is sometimes updated by template instantiation, when we
// switch from the specialization referring to the template declaration
// to it referring to the template definition.
if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
Record.push_back(MSInfo->getTemplateSpecializationKind());
Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
} else {
auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
Record.push_back(Spec->getTemplateSpecializationKind());
Record.AddSourceLocation(Spec->getPointOfInstantiation());
// The instantiation might have been resolved to a partial
// specialization. If so, record which one.
auto From = Spec->getInstantiatedFrom();
if (auto PartialSpec =
From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
Record.push_back(true);
Record.AddDeclRef(PartialSpec);
Record.AddTemplateArgumentList(
&Spec->getTemplateInstantiationArgs());
} else {
Record.push_back(false);
}
}
Record.push_back(RD->getTagKind());
Record.AddSourceLocation(RD->getLocation());
Record.AddSourceLocation(RD->getBeginLoc());
Record.AddSourceRange(RD->getBraceRange());
// Instantiation may change attributes; write them all out afresh.
Record.push_back(D->hasAttrs());
if (D->hasAttrs())
Record.AddAttributes(D->getAttrs());
// FIXME: Ensure we don't get here for explicit instantiations.
break;
}
case UPD_CXX_RESOLVED_DTOR_DELETE:
Record.AddDeclRef(Update.getDecl());
Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
break;
case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
addExceptionSpec(
cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
Record);
break;
case UPD_CXX_DEDUCED_RETURN_TYPE:
Record.push_back(GetOrCreateTypeID(Update.getType()));
break;
case UPD_DECL_MARKED_USED:
break;
case UPD_MANGLING_NUMBER:
case UPD_STATIC_LOCAL_NUMBER:
Record.push_back(Update.getNumber());
break;
case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
Record.AddSourceRange(
D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
break;
case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
auto *A = D->getAttr<OMPAllocateDeclAttr>();
Record.push_back(A->getAllocatorType());
Record.AddStmt(A->getAllocator());
Record.AddSourceRange(A->getRange());
break;
}
case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
Record.AddSourceRange(
D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
break;
case UPD_DECL_EXPORTED:
Record.push_back(getSubmoduleID(Update.getModule()));
break;
case UPD_ADDED_ATTR_TO_RECORD:
Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
break;
}
}
if (HasUpdatedBody) {
const auto *Def = cast<FunctionDecl>(D);
Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
Record.push_back(Def->isInlined());
Record.AddSourceLocation(Def->getInnerLocStart());
Record.AddFunctionDefinition(Def);
}
OffsetsRecord.push_back(GetDeclRef(D));
OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
}
}
void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
uint32_t Raw = Loc.getRawEncoding();
Record.push_back((Raw << 1) | (Raw >> 31));
}
void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
AddSourceLocation(Range.getBegin(), Record);
AddSourceLocation(Range.getEnd(), Record);
}
void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
Record->push_back(Value.getBitWidth());
const uint64_t *Words = Value.getRawData();
Record->append(Words, Words + Value.getNumWords());
}
void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
Record->push_back(Value.isUnsigned());
AddAPInt(Value);
}
void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
AddAPInt(Value.bitcastToAPInt());
}
static void WriteFixedPointSemantics(ASTRecordWriter &Record,
FixedPointSemantics FPSema) {
Record.push_back(FPSema.getWidth());
Record.push_back(FPSema.getScale());
Record.push_back(FPSema.isSigned() | FPSema.isSaturated() << 1 |
FPSema.hasUnsignedPadding() << 2);
}
void ASTRecordWriter::AddAPValue(const APValue &Value) {
APValue::ValueKind Kind = Value.getKind();
push_back(static_cast<uint64_t>(Kind));
switch (Kind) {
case APValue::None:
case APValue::Indeterminate:
return;
case APValue::Int:
AddAPSInt(Value.getInt());
return;
case APValue::Float:
push_back(static_cast<uint64_t>(
llvm::APFloatBase::SemanticsToEnum(Value.getFloat().getSemantics())));
AddAPFloat(Value.getFloat());
return;
case APValue::FixedPoint: {
WriteFixedPointSemantics(*this, Value.getFixedPoint().getSemantics());
AddAPSInt(Value.getFixedPoint().getValue());
return;
}
case APValue::ComplexInt: {
AddAPSInt(Value.getComplexIntReal());
AddAPSInt(Value.getComplexIntImag());
return;
}
case APValue::ComplexFloat: {
push_back(static_cast<uint64_t>(llvm::APFloatBase::SemanticsToEnum(
Value.getComplexFloatReal().getSemantics())));
AddAPFloat(Value.getComplexFloatReal());
push_back(static_cast<uint64_t>(llvm::APFloatBase::SemanticsToEnum(
Value.getComplexFloatImag().getSemantics())));
AddAPFloat(Value.getComplexFloatImag());
return;
}
case APValue::LValue:
case APValue::Vector:
case APValue::Array:
case APValue::Struct:
case APValue::Union:
case APValue::MemberPointer:
case APValue::AddrLabelDiff:
// TODO : Handle all these APValue::ValueKind.
return;
}
llvm_unreachable("Invalid APValue::ValueKind");
}
void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
Record.push_back(getIdentifierRef(II));
}
IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
if (!II)
return 0;
IdentID &ID = IdentifierIDs[II];
if (ID == 0)
ID = NextIdentID++;
return ID;
}
MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
// Don't emit builtin macros like __LINE__ to the AST file unless they
// have been redefined by the header (in which case they are not
// isBuiltinMacro).
if (!MI || MI->isBuiltinMacro())
return 0;
MacroID &ID = MacroIDs[MI];
if (ID == 0) {
ID = NextMacroID++;
MacroInfoToEmitData Info = { Name, MI, ID };
MacroInfosToEmit.push_back(Info);
}
return ID;
}
MacroID ASTWriter::getMacroID(MacroInfo *MI) {
if (!MI || MI->isBuiltinMacro())
return 0;
assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!");
return MacroIDs[MI];
}
uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
return IdentMacroDirectivesOffsetMap.lookup(Name);
}
void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
Record->push_back(Writer->getSelectorRef(SelRef));
}
SelectorID ASTWriter::getSelectorRef(Selector Sel) {
if (Sel.getAsOpaquePtr() == nullptr) {
return 0;
}
SelectorID SID = SelectorIDs[Sel];
if (SID == 0 && Chain) {
// This might trigger a ReadSelector callback, which will set the ID for
// this selector.
Chain->LoadSelector(Sel);
SID = SelectorIDs[Sel];
}
if (SID == 0) {
SID = NextSelectorID++;
SelectorIDs[Sel] = SID;
}
return SID;
}
void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
AddDeclRef(Temp->getDestructor());
}
void ASTRecordWriter::AddTemplateArgumentLocInfo(
TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
switch (Kind) {
case TemplateArgument::Expression:
AddStmt(Arg.getAsExpr());
break;
case TemplateArgument::Type:
AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
break;
case TemplateArgument::Template:
AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
AddSourceLocation(Arg.getTemplateNameLoc());
break;
case TemplateArgument::TemplateExpansion:
AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
AddSourceLocation(Arg.getTemplateNameLoc());
AddSourceLocation(Arg.getTemplateEllipsisLoc());
break;
case TemplateArgument::Null:
case TemplateArgument::Integral:
case TemplateArgument::Declaration:
case TemplateArgument::NullPtr:
case TemplateArgument::Pack:
// FIXME: Is this right?
break;
}
}
void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
AddTemplateArgument(Arg.getArgument());
if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
bool InfoHasSameExpr
= Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
Record->push_back(InfoHasSameExpr);
if (InfoHasSameExpr)
return; // Avoid storing the same expr twice.
}
AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
}
void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
if (!TInfo) {
AddTypeRef(QualType());
return;
}
AddTypeRef(TInfo->getType());
AddTypeLoc(TInfo->getTypeLoc());
}
void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
TypeLocWriter TLW(*this);
for (; !TL.isNull(); TL = TL.getNextTypeLoc())
TLW.Visit(TL);
}
void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
Record.push_back(GetOrCreateTypeID(T));
}
TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
assert(Context);
return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
if (T.isNull())
return TypeIdx();
assert(!T.getLocalFastQualifiers());
TypeIdx &Idx = TypeIdxs[T];
if (Idx.getIndex() == 0) {
if (DoneWritingDeclsAndTypes) {
assert(0 && "New type seen after serializing all the types to emit!");
return TypeIdx();
}
// We haven't seen this type before. Assign it a new ID and put it
// into the queue of types to emit.
Idx = TypeIdx(NextTypeID++);
DeclTypesToEmit.push(T);
}
return Idx;
});
}
TypeID ASTWriter::getTypeID(QualType T) const {
assert(Context);
return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
if (T.isNull())
return TypeIdx();
assert(!T.getLocalFastQualifiers());
TypeIdxMap::const_iterator I = TypeIdxs.find(T);
assert(I != TypeIdxs.end() && "Type not emitted!");
return I->second;
});
}
void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
Record.push_back(GetDeclRef(D));
}
DeclID ASTWriter::GetDeclRef(const Decl *D) {
assert(WritingAST && "Cannot request a declaration ID before AST writing");
if (!D) {
return 0;
}
// If D comes from an AST file, its declaration ID is already known and
// fixed.
if (D->isFromASTFile())
return D->getGlobalID();
assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer");
DeclID &ID = DeclIDs[D];
if (ID == 0) {
if (DoneWritingDeclsAndTypes) {
assert(0 && "New decl seen after serializing all the decls to emit!");
return 0;
}
// We haven't seen this declaration before. Give it a new ID and
// enqueue it in the list of declarations to emit.
ID = NextDeclID++;
DeclTypesToEmit.push(const_cast<Decl *>(D));
}
return ID;
}
DeclID ASTWriter::getDeclID(const Decl *D) {
if (!D)
return 0;
// If D comes from an AST file, its declaration ID is already known and
// fixed.
if (D->isFromASTFile())
return D->getGlobalID();
assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!");
return DeclIDs[D];
}
void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
assert(ID);
assert(D);
SourceLocation Loc = D->getLocation();
if (Loc.isInvalid())
return;
// We only keep track of the file-level declarations of each file.
if (!D->getLexicalDeclContext()->isFileContext())
return;
// FIXME: ParmVarDecls that are part of a function type of a parameter of
// a function/objc method, should not have TU as lexical context.
// TemplateTemplateParmDecls that are part of an alias template, should not
// have TU as lexical context.
if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
return;
SourceManager &SM = Context->getSourceManager();
SourceLocation FileLoc = SM.getFileLoc(Loc);
assert(SM.isLocalSourceLocation(FileLoc));
FileID FID;
unsigned Offset;
std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
if (FID.isInvalid())
return;
assert(SM.getSLocEntry(FID).isFile());
DeclIDInFileInfo *&Info = FileDeclIDs[FID];
if (!Info)
Info = new DeclIDInFileInfo();
std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
LocDeclIDsTy &Decls = Info->DeclIDs;
if (Decls.empty() || Decls.back().first <= Offset) {
Decls.push_back(LocDecl);
return;
}
LocDeclIDsTy::iterator I =
llvm::upper_bound(Decls, LocDecl, llvm::less_first());
Decls.insert(I, LocDecl);
}
void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
// FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
Record->push_back(Name.getNameKind());
switch (Name.getNameKind()) {
case DeclarationName::Identifier:
AddIdentifierRef(Name.getAsIdentifierInfo());
break;
case DeclarationName::ObjCZeroArgSelector:
case DeclarationName::ObjCOneArgSelector:
case DeclarationName::ObjCMultiArgSelector:
AddSelectorRef(Name.getObjCSelector());
break;
case DeclarationName::CXXConstructorName:
case DeclarationName::CXXDestructorName:
case DeclarationName::CXXConversionFunctionName:
AddTypeRef(Name.getCXXNameType());
break;
case DeclarationName::CXXDeductionGuideName:
AddDeclRef(Name.getCXXDeductionGuideTemplate());
break;
case DeclarationName::CXXOperatorName:
Record->push_back(Name.getCXXOverloadedOperator());
break;
case DeclarationName::CXXLiteralOperatorName:
AddIdentifierRef(Name.getCXXLiteralIdentifier());
break;
case DeclarationName::CXXUsingDirective:
// No extra data to emit
break;
}
}
unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
assert(needsAnonymousDeclarationNumber(D) &&
"expected an anonymous declaration");
// Number the anonymous declarations within this context, if we've not
// already done so.
auto It = AnonymousDeclarationNumbers.find(D);
if (It == AnonymousDeclarationNumbers.end()) {
auto *DC = D->getLexicalDeclContext();
numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
AnonymousDeclarationNumbers[ND] = Number;
});
It = AnonymousDeclarationNumbers.find(D);
assert(It != AnonymousDeclarationNumbers.end() &&
"declaration not found within its lexical context");
}
return It->second;
}
void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
DeclarationName Name) {
switch (Name.getNameKind()) {
case DeclarationName::CXXConstructorName:
case DeclarationName::CXXDestructorName:
case DeclarationName::CXXConversionFunctionName:
AddTypeSourceInfo(DNLoc.NamedType.TInfo);
break;
case DeclarationName::CXXOperatorName:
AddSourceLocation(SourceLocation::getFromRawEncoding(
DNLoc.CXXOperatorName.BeginOpNameLoc));
AddSourceLocation(
SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
break;
case DeclarationName::CXXLiteralOperatorName:
AddSourceLocation(SourceLocation::getFromRawEncoding(
DNLoc.CXXLiteralOperatorName.OpNameLoc));
break;
case DeclarationName::Identifier:
case DeclarationName::ObjCZeroArgSelector:
case DeclarationName::ObjCOneArgSelector:
case DeclarationName::ObjCMultiArgSelector:
case DeclarationName::CXXUsingDirective:
case DeclarationName::CXXDeductionGuideName:
break;
}
}
void ASTRecordWriter::AddDeclarationNameInfo(
const DeclarationNameInfo &NameInfo) {
AddDeclarationName(NameInfo.getName());
AddSourceLocation(NameInfo.getLoc());
AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
}
void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
AddNestedNameSpecifierLoc(Info.QualifierLoc);
Record->push_back(Info.NumTemplParamLists);
for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
AddTemplateParameterList(Info.TemplParamLists[i]);
}
void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
// Nested name specifiers usually aren't too long. I think that 8 would
// typically accommodate the vast majority.
SmallVector<NestedNameSpecifier *, 8> NestedNames;
// Push each of the NNS's onto a stack for serialization in reverse order.
while (NNS) {
NestedNames.push_back(NNS);
NNS = NNS->getPrefix();
}
Record->push_back(NestedNames.size());
while(!NestedNames.empty()) {
NNS = NestedNames.pop_back_val();
NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
Record->push_back(Kind);
switch (Kind) {
case NestedNameSpecifier::Identifier:
AddIdentifierRef(NNS->getAsIdentifier());
break;
case NestedNameSpecifier::Namespace:
AddDeclRef(NNS->getAsNamespace());
break;
case NestedNameSpecifier::NamespaceAlias:
AddDeclRef(NNS->getAsNamespaceAlias());
break;
case NestedNameSpecifier::TypeSpec:
case NestedNameSpecifier::TypeSpecWithTemplate:
AddTypeRef(QualType(NNS->getAsType(), 0));
Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
break;
case NestedNameSpecifier::Global:
// Don't need to write an associated value.
break;
case NestedNameSpecifier::Super:
AddDeclRef(NNS->getAsRecordDecl());
break;
}
}
}
void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
// Nested name specifiers usually aren't too long. I think that 8 would
// typically accommodate the vast majority.
SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
// Push each of the nested-name-specifiers's onto a stack for
// serialization in reverse order.
while (NNS) {
NestedNames.push_back(NNS);
NNS = NNS.getPrefix();
}
Record->push_back(NestedNames.size());
while(!NestedNames.empty()) {
NNS = NestedNames.pop_back_val();
NestedNameSpecifier::SpecifierKind Kind
= NNS.getNestedNameSpecifier()->getKind();
Record->push_back(Kind);
switch (Kind) {
case NestedNameSpecifier::Identifier:
AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
AddSourceRange(NNS.getLocalSourceRange());
break;
case NestedNameSpecifier::Namespace:
AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
AddSourceRange(NNS.getLocalSourceRange());
break;
case NestedNameSpecifier::NamespaceAlias:
AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
AddSourceRange(NNS.getLocalSourceRange());
break;
case NestedNameSpecifier::TypeSpec:
case NestedNameSpecifier::TypeSpecWithTemplate:
Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
AddTypeRef(NNS.getTypeLoc().getType());
AddTypeLoc(NNS.getTypeLoc());
AddSourceLocation(NNS.getLocalSourceRange().getEnd());
break;
case NestedNameSpecifier::Global:
AddSourceLocation(NNS.getLocalSourceRange().getEnd());
break;
case NestedNameSpecifier::Super:
AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
AddSourceRange(NNS.getLocalSourceRange());
break;
}
}
}
void ASTRecordWriter::AddTemplateName(TemplateName Name) {
TemplateName::NameKind Kind = Name.getKind();
Record->push_back(Kind);
switch (Kind) {
case TemplateName::Template:
AddDeclRef(Name.getAsTemplateDecl());
break;
case TemplateName::OverloadedTemplate: {
OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
Record->push_back(OvT->size());
for (const auto &I : *OvT)
AddDeclRef(I);
break;
}
case TemplateName::AssumedTemplate: {
AssumedTemplateStorage *ADLT = Name.getAsAssumedTemplateName();
AddDeclarationName(ADLT->getDeclName());
break;
}
case TemplateName::QualifiedTemplate: {
QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
AddNestedNameSpecifier(QualT->getQualifier());
Record->push_back(QualT->hasTemplateKeyword());
AddDeclRef(QualT->getTemplateDecl());
break;
}
case TemplateName::DependentTemplate: {
DependentTemplateName *DepT = Name.getAsDependentTemplateName();
AddNestedNameSpecifier(DepT->getQualifier());
Record->push_back(DepT->isIdentifier());
if (DepT->isIdentifier())
AddIdentifierRef(DepT->getIdentifier());
else
Record->push_back(DepT->getOperator());
break;
}
case TemplateName::SubstTemplateTemplateParm: {
SubstTemplateTemplateParmStorage *subst
= Name.getAsSubstTemplateTemplateParm();
AddDeclRef(subst->getParameter());
AddTemplateName(subst->getReplacement());
break;
}
case TemplateName::SubstTemplateTemplateParmPack: {
SubstTemplateTemplateParmPackStorage *SubstPack
= Name.getAsSubstTemplateTemplateParmPack();
AddDeclRef(SubstPack->getParameterPack());
AddTemplateArgument(SubstPack->getArgumentPack());
break;
}
}
}
void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
Record->push_back(Arg.getKind());
switch (Arg.getKind()) {
case TemplateArgument::Null:
break;
case TemplateArgument::Type:
AddTypeRef(Arg.getAsType());
break;
case TemplateArgument::Declaration:
AddDeclRef(Arg.getAsDecl());
AddTypeRef(Arg.getParamTypeForDecl());
break;
case TemplateArgument::NullPtr:
AddTypeRef(Arg.getNullPtrType());
break;
case TemplateArgument::Integral:
AddAPSInt(Arg.getAsIntegral());
AddTypeRef(Arg.getIntegralType());
break;
case TemplateArgument::Template:
AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
break;
case TemplateArgument::TemplateExpansion:
AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
Record->push_back(*NumExpansions + 1);
else
Record->push_back(0);
break;
case TemplateArgument::Expression:
AddStmt(Arg.getAsExpr());
break;
case TemplateArgument::Pack:
Record->push_back(Arg.pack_size());
for (const auto &P : Arg.pack_elements())
AddTemplateArgument(P);
break;
}
}
void ASTRecordWriter::AddTemplateParameterList(
const TemplateParameterList *TemplateParams) {
assert(TemplateParams && "No TemplateParams!");
AddSourceLocation(TemplateParams->getTemplateLoc());
AddSourceLocation(TemplateParams->getLAngleLoc());
AddSourceLocation(TemplateParams->getRAngleLoc());
Record->push_back(TemplateParams->size());
for (const auto &P : *TemplateParams)
AddDeclRef(P);
if (const Expr *RequiresClause = TemplateParams->getRequiresClause()) {
Record->push_back(true);
AddStmt(const_cast<Expr*>(RequiresClause));
} else {
Record->push_back(false);
}
}
/// Emit a template argument list.
void ASTRecordWriter::AddTemplateArgumentList(
const TemplateArgumentList *TemplateArgs) {
assert(TemplateArgs && "No TemplateArgs!");
Record->push_back(TemplateArgs->size());
for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
AddTemplateArgument(TemplateArgs->get(i));
}
void ASTRecordWriter::AddASTTemplateArgumentListInfo(
const ASTTemplateArgumentListInfo *ASTTemplArgList) {
assert(ASTTemplArgList && "No ASTTemplArgList!");
AddSourceLocation(ASTTemplArgList->LAngleLoc);
AddSourceLocation(ASTTemplArgList->RAngleLoc);
Record->push_back(ASTTemplArgList->NumTemplateArgs);
const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
AddTemplateArgumentLoc(TemplArgs[i]);
}
void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
Record->push_back(Set.size());
for (ASTUnresolvedSet::const_iterator
I = Set.begin(), E = Set.end(); I != E; ++I) {
AddDeclRef(I.getDecl());
Record->push_back(I.getAccess());
}
}
// FIXME: Move this out of the main ASTRecordWriter interface.
void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
Record->push_back(Base.isVirtual());
Record->push_back(Base.isBaseOfClass());
Record->push_back(Base.getAccessSpecifierAsWritten());
Record->push_back(Base.getInheritConstructors());
AddTypeSourceInfo(Base.getTypeSourceInfo());
AddSourceRange(Base.getSourceRange());
AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
: SourceLocation());
}
static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
ArrayRef<CXXBaseSpecifier> Bases) {
ASTWriter::RecordData Record;
ASTRecordWriter Writer(W, Record);
Writer.push_back(Bases.size());
for (auto &Base : Bases)
Writer.AddCXXBaseSpecifier(Base);
return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
}
// FIXME: Move this out of the main ASTRecordWriter interface.
void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
}
static uint64_t
EmitCXXCtorInitializers(ASTWriter &W,
ArrayRef<CXXCtorInitializer *> CtorInits) {
ASTWriter::RecordData Record;
ASTRecordWriter Writer(W, Record);
Writer.push_back(CtorInits.size());
for (auto *Init : CtorInits) {
if (Init->isBaseInitializer()) {
Writer.push_back(CTOR_INITIALIZER_BASE);
Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
Writer.push_back(Init->isBaseVirtual());
} else if (Init->isDelegatingInitializer()) {
Writer.push_back(CTOR_INITIALIZER_DELEGATING);
Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
} else if (Init->isMemberInitializer()){
Writer.push_back(CTOR_INITIALIZER_MEMBER);
Writer.AddDeclRef(Init->getMember());
} else {
Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
Writer.AddDeclRef(Init->getIndirectMember());
}
Writer.AddSourceLocation(Init->getMemberLocation());
Writer.AddStmt(Init->getInit());
Writer.AddSourceLocation(Init->getLParenLoc());
Writer.AddSourceLocation(Init->getRParenLoc());
Writer.push_back(Init->isWritten());
if (Init->isWritten())
Writer.push_back(Init->getSourceOrder());
}
return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
}
// FIXME: Move this out of the main ASTRecordWriter interface.
void ASTRecordWriter::AddCXXCtorInitializers(
ArrayRef<CXXCtorInitializer *> CtorInits) {
AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
}
void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
auto &Data = D->data();
Record->push_back(Data.IsLambda);
#define FIELD(Name, Width, Merge) \
Record->push_back(Data.Name);
#include "clang/AST/CXXRecordDeclDefinitionBits.def"
// getODRHash will compute the ODRHash if it has not been previously computed.
Record->push_back(D->getODRHash());
bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
Writer->WritingModule && !D->isDependentType();
Record->push_back(ModulesDebugInfo);
if (ModulesDebugInfo)
Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
// IsLambda bit is already saved.
Record->push_back(Data.NumBases);
if (Data.NumBases > 0)
AddCXXBaseSpecifiers(Data.bases());
// FIXME: Make VBases lazily computed when needed to avoid storing them.
Record->push_back(Data.NumVBases);
if (Data.NumVBases > 0)
AddCXXBaseSpecifiers(Data.vbases());
AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
Record->push_back(Data.ComputedVisibleConversions);
if (Data.ComputedVisibleConversions)
AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
// Data.Definition is the owning decl, no need to write it.
AddDeclRef(D->getFirstFriend());
// Add lambda-specific data.
if (Data.IsLambda) {
auto &Lambda = D->getLambdaData();
Record->push_back(Lambda.Dependent);
Record->push_back(Lambda.IsGenericLambda);
Record->push_back(Lambda.CaptureDefault);
Record->push_back(Lambda.NumCaptures);
Record->push_back(Lambda.NumExplicitCaptures);
Record->push_back(Lambda.HasKnownInternalLinkage);
Record->push_back(Lambda.ManglingNumber);
AddDeclRef(D->getLambdaContextDecl());
AddTypeSourceInfo(Lambda.MethodTyInfo);
for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
const LambdaCapture &Capture = Lambda.Captures[I];
AddSourceLocation(Capture.getLocation());
Record->push_back(Capture.isImplicit());
Record->push_back(Capture.getCaptureKind());
switch (Capture.getCaptureKind()) {
case LCK_StarThis:
case LCK_This:
case LCK_VLAType:
break;
case LCK_ByCopy:
case LCK_ByRef:
VarDecl *Var =
Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
AddDeclRef(Var);
AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
: SourceLocation());
break;
}
}
}
}
void ASTWriter::ReaderInitialized(ASTReader *Reader) {
assert(Reader && "Cannot remove chain");
assert((!Chain || Chain == Reader) && "Cannot replace chain");
assert(FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID &&
FirstIdentID == NextIdentID &&
FirstMacroID == NextMacroID &&
FirstSubmoduleID == NextSubmoduleID &&
FirstSelectorID == NextSelectorID &&
"Setting chain after writing has started.");
Chain = Reader;
// Note, this will get called multiple times, once one the reader starts up
// and again each time it's done reading a PCH or module.
FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
NextDeclID = FirstDeclID;
NextTypeID = FirstTypeID;
NextIdentID = FirstIdentID;
NextMacroID = FirstMacroID;
NextSelectorID = FirstSelectorID;
NextSubmoduleID = FirstSubmoduleID;
}
void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
// Always keep the highest ID. See \p TypeRead() for more information.
IdentID &StoredID = IdentifierIDs[II];
if (ID > StoredID)
StoredID = ID;
}
void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
// Always keep the highest ID. See \p TypeRead() for more information.
MacroID &StoredID = MacroIDs[MI];
if (ID > StoredID)
StoredID = ID;
}
void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
// Always take the highest-numbered type index. This copes with an interesting
// case for chained AST writing where we schedule writing the type and then,
// later, deserialize the type from another AST. In this case, we want to
// keep the higher-numbered entry so that we can properly write it out to
// the AST file.
TypeIdx &StoredIdx = TypeIdxs[T];
if (Idx.getIndex() >= StoredIdx.getIndex())
StoredIdx = Idx;
}
void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
// Always keep the highest ID. See \p TypeRead() for more information.
SelectorID &StoredID = SelectorIDs[S];
if (ID > StoredID)
StoredID = ID;
}
void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
MacroDefinitionRecord *MD) {
assert(MacroDefinitions.find(MD) == MacroDefinitions.end());
MacroDefinitions[MD] = ID;
}
void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end());
SubmoduleIDs[Mod] = ID;
}
void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(D->isCompleteDefinition());
assert(!WritingAST && "Already writing the AST!");
if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
// We are interested when a PCH decl is modified.
if (RD->isFromASTFile()) {
// A forward reference was mutated into a definition. Rewrite it.
// FIXME: This happens during template instantiation, should we
// have created a new definition decl instead ?
assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&
"completed a tag from another module but not by instantiation?");
DeclUpdates[RD].push_back(
DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
}
}
}
static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
if (D->isFromASTFile())
return true;
// The predefined __va_list_tag struct is imported if we imported any decls.
// FIXME: This is a gross hack.
return D == D->getASTContext().getVaListTagDecl();
}
void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(DC->isLookupContext() &&
"Should not add lookup results to non-lookup contexts!");
// TU is handled elsewhere.
if (isa<TranslationUnitDecl>(DC))
return;
// Namespaces are handled elsewhere, except for template instantiations of
// FunctionTemplateDecls in namespaces. We are interested in cases where the
// local instantiations are added to an imported context. Only happens when
// adding ADL lookup candidates, for example templated friends.
if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
!isa<FunctionTemplateDecl>(D))
return;
// We're only interested in cases where a local declaration is added to an
// imported context.
if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
return;
assert(DC == DC->getPrimaryContext() && "added to non-primary context");
assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!");
assert(!WritingAST && "Already writing the AST!");
if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
// We're adding a visible declaration to a predefined decl context. Ensure
// that we write out all of its lookup results so we don't get a nasty
// surprise when we try to emit its lookup table.
for (auto *Child : DC->decls())
DeclsToEmitEvenIfUnreferenced.push_back(Child);
}
DeclsToEmitEvenIfUnreferenced.push_back(D);
}
void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(D->isImplicit());
// We're only interested in cases where a local declaration is added to an
// imported context.
if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
return;
if (!isa<CXXMethodDecl>(D))
return;
// A decl coming from PCH was modified.
assert(RD->isCompleteDefinition());
assert(!WritingAST && "Already writing the AST!");
DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
}
void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!DoneWritingDeclsAndTypes && "Already done writing updates!");
if (!Chain) return;
Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
// If we don't already know the exception specification for this redecl
// chain, add an update record for it.
if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
->getType()
->castAs<FunctionProtoType>()
->getExceptionSpecType()))
DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
});
}
void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!Chain) return;
Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
DeclUpdates[D].push_back(
DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
});
}
void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
const FunctionDecl *Delete,
Expr *ThisArg) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
assert(Delete && "Not given an operator delete");
if (!Chain) return;
Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
});
}
void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return; // Declaration not imported from PCH.
// Implicit function decl from a PCH was defined.
DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
}
void ASTWriter::VariableDefinitionInstantiated(const VarDecl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_VAR_DEFINITION));
}
void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
}
void ASTWriter::InstantiationRequested(const ValueDecl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
// Since the actual instantiation is delayed, this really means that we need
// to update the instantiation location.
SourceLocation POI;
if (auto *VD = dyn_cast<VarDecl>(D))
POI = VD->getPointOfInstantiation();
else
POI = cast<FunctionDecl>(D)->getPointOfInstantiation();
DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_POINT_OF_INSTANTIATION, POI));
}
void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(
DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
}
void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(
DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
}
void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
const ObjCInterfaceDecl *IFD) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!IFD->isFromASTFile())
return; // Declaration not imported from PCH.
assert(IFD->getDefinition() && "Category on a class without a definition?");
ObjCClassesWithCategories.insert(
const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
}
void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
// If there is *any* declaration of the entity that's not from an AST file,
// we can skip writing the update record. We make sure that isUsed() triggers
// completion of the redeclaration chain of the entity.
for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
if (IsLocalDecl(Prev))
return;
DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
}
void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
}
void ASTWriter::DeclarationMarkedOpenMPAllocate(const Decl *D, const Attr *A) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_ALLOCATE, A));
}
void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
const Attr *Attr) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!D->isFromASTFile())
return;
DeclUpdates[D].push_back(
DeclUpdate(UPD_DECL_MARKED_OPENMP_DECLARETARGET, Attr));
}
void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
assert(D->isHidden() && "expected a hidden declaration");
DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_EXPORTED, M));
}
void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
const RecordDecl *Record) {
if (Chain && Chain->isProcessingUpdateRecords()) return;
assert(!WritingAST && "Already writing the AST!");
if (!Record->isFromASTFile())
return;
DeclUpdates[Record].push_back(DeclUpdate(UPD_ADDED_ATTR_TO_RECORD, Attr));
}
void ASTWriter::AddedCXXTemplateSpecialization(
const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
assert(!WritingAST && "Already writing the AST!");
if (!TD->getFirstDecl()->isFromASTFile())
return;
if (Chain && Chain->isProcessingUpdateRecords())
return;
DeclsToEmitEvenIfUnreferenced.push_back(D);
}
void ASTWriter::AddedCXXTemplateSpecialization(
const VarTemplateDecl *TD, const VarTemplateSpecializationDecl *D) {
assert(!WritingAST && "Already writing the AST!");
if (!TD->getFirstDecl()->isFromASTFile())
return;
if (Chain && Chain->isProcessingUpdateRecords())
return;
DeclsToEmitEvenIfUnreferenced.push_back(D);
}
void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
const FunctionDecl *D) {
assert(!WritingAST && "Already writing the AST!");
if (!TD->getFirstDecl()->isFromASTFile())
return;
if (Chain && Chain->isProcessingUpdateRecords())
return;
DeclsToEmitEvenIfUnreferenced.push_back(D);
}
//===----------------------------------------------------------------------===//
//// OMPClause Serialization
////===----------------------------------------------------------------------===//
void OMPClauseWriter::writeClause(OMPClause *C) {
Record.push_back(C->getClauseKind());
Visit(C);
Record.AddSourceLocation(C->getBeginLoc());
Record.AddSourceLocation(C->getEndLoc());
}
void OMPClauseWriter::VisitOMPClauseWithPreInit(OMPClauseWithPreInit *C) {
Record.push_back(C->getCaptureRegion());
Record.AddStmt(C->getPreInitStmt());
}
void OMPClauseWriter::VisitOMPClauseWithPostUpdate(OMPClauseWithPostUpdate *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getPostUpdateExpr());
}
void OMPClauseWriter::VisitOMPIfClause(OMPIfClause *C) {
VisitOMPClauseWithPreInit(C);
Record.push_back(C->getNameModifier());
Record.AddSourceLocation(C->getNameModifierLoc());
Record.AddSourceLocation(C->getColonLoc());
Record.AddStmt(C->getCondition());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPFinalClause(OMPFinalClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getCondition());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPNumThreadsClause(OMPNumThreadsClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getNumThreads());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPSafelenClause(OMPSafelenClause *C) {
Record.AddStmt(C->getSafelen());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPSimdlenClause(OMPSimdlenClause *C) {
Record.AddStmt(C->getSimdlen());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPAllocatorClause(OMPAllocatorClause *C) {
Record.AddStmt(C->getAllocator());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPCollapseClause(OMPCollapseClause *C) {
Record.AddStmt(C->getNumForLoops());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPDefaultClause(OMPDefaultClause *C) {
Record.push_back(C->getDefaultKind());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getDefaultKindKwLoc());
}
void OMPClauseWriter::VisitOMPProcBindClause(OMPProcBindClause *C) {
Record.push_back(C->getProcBindKind());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getProcBindKindKwLoc());
}
void OMPClauseWriter::VisitOMPScheduleClause(OMPScheduleClause *C) {
VisitOMPClauseWithPreInit(C);
Record.push_back(C->getScheduleKind());
Record.push_back(C->getFirstScheduleModifier());
Record.push_back(C->getSecondScheduleModifier());
Record.AddStmt(C->getChunkSize());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getFirstScheduleModifierLoc());
Record.AddSourceLocation(C->getSecondScheduleModifierLoc());
Record.AddSourceLocation(C->getScheduleKindLoc());
Record.AddSourceLocation(C->getCommaLoc());
}
void OMPClauseWriter::VisitOMPOrderedClause(OMPOrderedClause *C) {
Record.push_back(C->getLoopNumIterations().size());
Record.AddStmt(C->getNumForLoops());
for (Expr *NumIter : C->getLoopNumIterations())
Record.AddStmt(NumIter);
for (unsigned I = 0, E = C->getLoopNumIterations().size(); I <E; ++I)
Record.AddStmt(C->getLoopCounter(I));
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPNowaitClause(OMPNowaitClause *) {}
void OMPClauseWriter::VisitOMPUntiedClause(OMPUntiedClause *) {}
void OMPClauseWriter::VisitOMPMergeableClause(OMPMergeableClause *) {}
void OMPClauseWriter::VisitOMPReadClause(OMPReadClause *) {}
void OMPClauseWriter::VisitOMPWriteClause(OMPWriteClause *) {}
void OMPClauseWriter::VisitOMPUpdateClause(OMPUpdateClause *) {}
void OMPClauseWriter::VisitOMPCaptureClause(OMPCaptureClause *) {}
void OMPClauseWriter::VisitOMPSeqCstClause(OMPSeqCstClause *) {}
void OMPClauseWriter::VisitOMPThreadsClause(OMPThreadsClause *) {}
void OMPClauseWriter::VisitOMPSIMDClause(OMPSIMDClause *) {}
void OMPClauseWriter::VisitOMPNogroupClause(OMPNogroupClause *) {}
void OMPClauseWriter::VisitOMPPrivateClause(OMPPrivateClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists()) {
Record.AddStmt(VE);
}
for (auto *VE : C->private_copies()) {
Record.AddStmt(VE);
}
}
void OMPClauseWriter::VisitOMPFirstprivateClause(OMPFirstprivateClause *C) {
Record.push_back(C->varlist_size());
VisitOMPClauseWithPreInit(C);
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists()) {
Record.AddStmt(VE);
}
for (auto *VE : C->private_copies()) {
Record.AddStmt(VE);
}
for (auto *VE : C->inits()) {
Record.AddStmt(VE);
}
}
void OMPClauseWriter::VisitOMPLastprivateClause(OMPLastprivateClause *C) {
Record.push_back(C->varlist_size());
VisitOMPClauseWithPostUpdate(C);
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (auto *E : C->private_copies())
Record.AddStmt(E);
for (auto *E : C->source_exprs())
Record.AddStmt(E);
for (auto *E : C->destination_exprs())
Record.AddStmt(E);
for (auto *E : C->assignment_ops())
Record.AddStmt(E);
}
void OMPClauseWriter::VisitOMPSharedClause(OMPSharedClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
}
void OMPClauseWriter::VisitOMPReductionClause(OMPReductionClause *C) {
Record.push_back(C->varlist_size());
VisitOMPClauseWithPostUpdate(C);
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getColonLoc());
Record.AddNestedNameSpecifierLoc(C->getQualifierLoc());
Record.AddDeclarationNameInfo(C->getNameInfo());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (auto *VE : C->privates())
Record.AddStmt(VE);
for (auto *E : C->lhs_exprs())
Record.AddStmt(E);
for (auto *E : C->rhs_exprs())
Record.AddStmt(E);
for (auto *E : C->reduction_ops())
Record.AddStmt(E);
}
void OMPClauseWriter::VisitOMPTaskReductionClause(OMPTaskReductionClause *C) {
Record.push_back(C->varlist_size());
VisitOMPClauseWithPostUpdate(C);
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getColonLoc());
Record.AddNestedNameSpecifierLoc(C->getQualifierLoc());
Record.AddDeclarationNameInfo(C->getNameInfo());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (auto *VE : C->privates())
Record.AddStmt(VE);
for (auto *E : C->lhs_exprs())
Record.AddStmt(E);
for (auto *E : C->rhs_exprs())
Record.AddStmt(E);
for (auto *E : C->reduction_ops())
Record.AddStmt(E);
}
void OMPClauseWriter::VisitOMPInReductionClause(OMPInReductionClause *C) {
Record.push_back(C->varlist_size());
VisitOMPClauseWithPostUpdate(C);
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getColonLoc());
Record.AddNestedNameSpecifierLoc(C->getQualifierLoc());
Record.AddDeclarationNameInfo(C->getNameInfo());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (auto *VE : C->privates())
Record.AddStmt(VE);
for (auto *E : C->lhs_exprs())
Record.AddStmt(E);
for (auto *E : C->rhs_exprs())
Record.AddStmt(E);
for (auto *E : C->reduction_ops())
Record.AddStmt(E);
for (auto *E : C->taskgroup_descriptors())
Record.AddStmt(E);
}
void OMPClauseWriter::VisitOMPLinearClause(OMPLinearClause *C) {
Record.push_back(C->varlist_size());
VisitOMPClauseWithPostUpdate(C);
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getColonLoc());
Record.push_back(C->getModifier());
Record.AddSourceLocation(C->getModifierLoc());
for (auto *VE : C->varlists()) {
Record.AddStmt(VE);
}
for (auto *VE : C->privates()) {
Record.AddStmt(VE);
}
for (auto *VE : C->inits()) {
Record.AddStmt(VE);
}
for (auto *VE : C->updates()) {
Record.AddStmt(VE);
}
for (auto *VE : C->finals()) {
Record.AddStmt(VE);
}
Record.AddStmt(C->getStep());
Record.AddStmt(C->getCalcStep());
for (auto *VE : C->used_expressions())
Record.AddStmt(VE);
}
void OMPClauseWriter::VisitOMPAlignedClause(OMPAlignedClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getColonLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
Record.AddStmt(C->getAlignment());
}
void OMPClauseWriter::VisitOMPCopyinClause(OMPCopyinClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (auto *E : C->source_exprs())
Record.AddStmt(E);
for (auto *E : C->destination_exprs())
Record.AddStmt(E);
for (auto *E : C->assignment_ops())
Record.AddStmt(E);
}
void OMPClauseWriter::VisitOMPCopyprivateClause(OMPCopyprivateClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (auto *E : C->source_exprs())
Record.AddStmt(E);
for (auto *E : C->destination_exprs())
Record.AddStmt(E);
for (auto *E : C->assignment_ops())
Record.AddStmt(E);
}
void OMPClauseWriter::VisitOMPFlushClause(OMPFlushClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
}
void OMPClauseWriter::VisitOMPDependClause(OMPDependClause *C) {
Record.push_back(C->varlist_size());
Record.push_back(C->getNumLoops());
Record.AddSourceLocation(C->getLParenLoc());
Record.push_back(C->getDependencyKind());
Record.AddSourceLocation(C->getDependencyLoc());
Record.AddSourceLocation(C->getColonLoc());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I)
Record.AddStmt(C->getLoopData(I));
}
void OMPClauseWriter::VisitOMPDeviceClause(OMPDeviceClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getDevice());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPMapClause(OMPMapClause *C) {
Record.push_back(C->varlist_size());
Record.push_back(C->getUniqueDeclarationsNum());
Record.push_back(C->getTotalComponentListNum());
Record.push_back(C->getTotalComponentsNum());
Record.AddSourceLocation(C->getLParenLoc());
for (unsigned I = 0; I < OMPMapClause::NumberOfModifiers; ++I) {
Record.push_back(C->getMapTypeModifier(I));
Record.AddSourceLocation(C->getMapTypeModifierLoc(I));
}
Record.AddNestedNameSpecifierLoc(C->getMapperQualifierLoc());
Record.AddDeclarationNameInfo(C->getMapperIdInfo());
Record.push_back(C->getMapType());
Record.AddSourceLocation(C->getMapLoc());
Record.AddSourceLocation(C->getColonLoc());
for (auto *E : C->varlists())
Record.AddStmt(E);
for (auto *E : C->mapperlists())
Record.AddStmt(E);
for (auto *D : C->all_decls())
Record.AddDeclRef(D);
for (auto N : C->all_num_lists())
Record.push_back(N);
for (auto N : C->all_lists_sizes())
Record.push_back(N);
for (auto &M : C->all_components()) {
Record.AddStmt(M.getAssociatedExpression());
Record.AddDeclRef(M.getAssociatedDeclaration());
}
}
void OMPClauseWriter::VisitOMPAllocateClause(OMPAllocateClause *C) {
Record.push_back(C->varlist_size());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getColonLoc());
Record.AddStmt(C->getAllocator());
for (auto *VE : C->varlists())
Record.AddStmt(VE);
}
void OMPClauseWriter::VisitOMPNumTeamsClause(OMPNumTeamsClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getNumTeams());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPThreadLimitClause(OMPThreadLimitClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getThreadLimit());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPPriorityClause(OMPPriorityClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getPriority());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPGrainsizeClause(OMPGrainsizeClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getGrainsize());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPNumTasksClause(OMPNumTasksClause *C) {
VisitOMPClauseWithPreInit(C);
Record.AddStmt(C->getNumTasks());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPHintClause(OMPHintClause *C) {
Record.AddStmt(C->getHint());
Record.AddSourceLocation(C->getLParenLoc());
}
void OMPClauseWriter::VisitOMPDistScheduleClause(OMPDistScheduleClause *C) {
VisitOMPClauseWithPreInit(C);
Record.push_back(C->getDistScheduleKind());
Record.AddStmt(C->getChunkSize());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getDistScheduleKindLoc());
Record.AddSourceLocation(C->getCommaLoc());
}
void OMPClauseWriter::VisitOMPDefaultmapClause(OMPDefaultmapClause *C) {
Record.push_back(C->getDefaultmapKind());
Record.push_back(C->getDefaultmapModifier());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getDefaultmapModifierLoc());
Record.AddSourceLocation(C->getDefaultmapKindLoc());
}
void OMPClauseWriter::VisitOMPToClause(OMPToClause *C) {
Record.push_back(C->varlist_size());
Record.push_back(C->getUniqueDeclarationsNum());
Record.push_back(C->getTotalComponentListNum());
Record.push_back(C->getTotalComponentsNum());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddNestedNameSpecifierLoc(C->getMapperQualifierLoc());
Record.AddDeclarationNameInfo(C->getMapperIdInfo());
for (auto *E : C->varlists())
Record.AddStmt(E);
for (auto *E : C->mapperlists())
Record.AddStmt(E);
for (auto *D : C->all_decls())
Record.AddDeclRef(D);
for (auto N : C->all_num_lists())
Record.push_back(N);
for (auto N : C->all_lists_sizes())
Record.push_back(N);
for (auto &M : C->all_components()) {
Record.AddStmt(M.getAssociatedExpression());
Record.AddDeclRef(M.getAssociatedDeclaration());
}
}
void OMPClauseWriter::VisitOMPFromClause(OMPFromClause *C) {
Record.push_back(C->varlist_size());
Record.push_back(C->getUniqueDeclarationsNum());
Record.push_back(C->getTotalComponentListNum());
Record.push_back(C->getTotalComponentsNum());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddNestedNameSpecifierLoc(C->getMapperQualifierLoc());
Record.AddDeclarationNameInfo(C->getMapperIdInfo());
for (auto *E : C->varlists())
Record.AddStmt(E);
for (auto *E : C->mapperlists())
Record.AddStmt(E);
for (auto *D : C->all_decls())
Record.AddDeclRef(D);
for (auto N : C->all_num_lists())
Record.push_back(N);
for (auto N : C->all_lists_sizes())
Record.push_back(N);
for (auto &M : C->all_components()) {
Record.AddStmt(M.getAssociatedExpression());
Record.AddDeclRef(M.getAssociatedDeclaration());
}
}
void OMPClauseWriter::VisitOMPUseDevicePtrClause(OMPUseDevicePtrClause *C) {
Record.push_back(C->varlist_size());
Record.push_back(C->getUniqueDeclarationsNum());
Record.push_back(C->getTotalComponentListNum());
Record.push_back(C->getTotalComponentsNum());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *E : C->varlists())
Record.AddStmt(E);
for (auto *VE : C->private_copies())
Record.AddStmt(VE);
for (auto *VE : C->inits())
Record.AddStmt(VE);
for (auto *D : C->all_decls())
Record.AddDeclRef(D);
for (auto N : C->all_num_lists())
Record.push_back(N);
for (auto N : C->all_lists_sizes())
Record.push_back(N);
for (auto &M : C->all_components()) {
Record.AddStmt(M.getAssociatedExpression());
Record.AddDeclRef(M.getAssociatedDeclaration());
}
}
void OMPClauseWriter::VisitOMPIsDevicePtrClause(OMPIsDevicePtrClause *C) {
Record.push_back(C->varlist_size());
Record.push_back(C->getUniqueDeclarationsNum());
Record.push_back(C->getTotalComponentListNum());
Record.push_back(C->getTotalComponentsNum());
Record.AddSourceLocation(C->getLParenLoc());
for (auto *E : C->varlists())
Record.AddStmt(E);
for (auto *D : C->all_decls())
Record.AddDeclRef(D);
for (auto N : C->all_num_lists())
Record.push_back(N);
for (auto N : C->all_lists_sizes())
Record.push_back(N);
for (auto &M : C->all_components()) {
Record.AddStmt(M.getAssociatedExpression());
Record.AddDeclRef(M.getAssociatedDeclaration());
}
}
void OMPClauseWriter::VisitOMPUnifiedAddressClause(OMPUnifiedAddressClause *) {}
void OMPClauseWriter::VisitOMPUnifiedSharedMemoryClause(
OMPUnifiedSharedMemoryClause *) {}
void OMPClauseWriter::VisitOMPReverseOffloadClause(OMPReverseOffloadClause *) {}
void
OMPClauseWriter::VisitOMPDynamicAllocatorsClause(OMPDynamicAllocatorsClause *) {
}
void OMPClauseWriter::VisitOMPAtomicDefaultMemOrderClause(
OMPAtomicDefaultMemOrderClause *C) {
Record.push_back(C->getAtomicDefaultMemOrderKind());
Record.AddSourceLocation(C->getLParenLoc());
Record.AddSourceLocation(C->getAtomicDefaultMemOrderKindKwLoc());
}
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