diff options
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Frontend/PCHWriter.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Frontend/PCHWriter.cpp | 2748 |
1 files changed, 0 insertions, 2748 deletions
diff --git a/contrib/llvm/tools/clang/lib/Frontend/PCHWriter.cpp b/contrib/llvm/tools/clang/lib/Frontend/PCHWriter.cpp deleted file mode 100644 index 093c1e3..0000000 --- a/contrib/llvm/tools/clang/lib/Frontend/PCHWriter.cpp +++ /dev/null @@ -1,2748 +0,0 @@ -//===--- PCHWriter.cpp - Precompiled Headers Writer -----------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file defines the PCHWriter class, which writes a precompiled header. -// -//===----------------------------------------------------------------------===// - -#include "clang/Frontend/PCHWriter.h" -#include "../Sema/Sema.h" // FIXME: move header into include/clang/Sema -#include "../Sema/IdentifierResolver.h" // FIXME: move header -#include "clang/AST/ASTContext.h" -#include "clang/AST/Decl.h" -#include "clang/AST/DeclContextInternals.h" -#include "clang/AST/Expr.h" -#include "clang/AST/Type.h" -#include "clang/AST/TypeLocVisitor.h" -#include "clang/Frontend/PCHReader.h" -#include "clang/Lex/MacroInfo.h" -#include "clang/Lex/PreprocessingRecord.h" -#include "clang/Lex/Preprocessor.h" -#include "clang/Lex/HeaderSearch.h" -#include "clang/Basic/FileManager.h" -#include "clang/Basic/OnDiskHashTable.h" -#include "clang/Basic/SourceManager.h" -#include "clang/Basic/SourceManagerInternals.h" -#include "clang/Basic/TargetInfo.h" -#include "clang/Basic/Version.h" -#include "llvm/ADT/APFloat.h" -#include "llvm/ADT/APInt.h" -#include "llvm/ADT/StringExtras.h" -#include "llvm/Bitcode/BitstreamWriter.h" -#include "llvm/Support/MemoryBuffer.h" -#include "llvm/System/Path.h" -#include <cstdio> -using namespace clang; - -//===----------------------------------------------------------------------===// -// Type serialization -//===----------------------------------------------------------------------===// - -namespace { - class PCHTypeWriter { - PCHWriter &Writer; - PCHWriter::RecordData &Record; - - public: - /// \brief Type code that corresponds to the record generated. - pch::TypeCode Code; - - PCHTypeWriter(PCHWriter &Writer, PCHWriter::RecordData &Record) - : Writer(Writer), Record(Record), Code(pch::TYPE_EXT_QUAL) { } - - 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.def" - }; -} - -void PCHTypeWriter::VisitBuiltinType(const BuiltinType *T) { - assert(false && "Built-in types are never serialized"); -} - -void PCHTypeWriter::VisitComplexType(const ComplexType *T) { - Writer.AddTypeRef(T->getElementType(), Record); - Code = pch::TYPE_COMPLEX; -} - -void PCHTypeWriter::VisitPointerType(const PointerType *T) { - Writer.AddTypeRef(T->getPointeeType(), Record); - Code = pch::TYPE_POINTER; -} - -void PCHTypeWriter::VisitBlockPointerType(const BlockPointerType *T) { - Writer.AddTypeRef(T->getPointeeType(), Record); - Code = pch::TYPE_BLOCK_POINTER; -} - -void PCHTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) { - Writer.AddTypeRef(T->getPointeeType(), Record); - Code = pch::TYPE_LVALUE_REFERENCE; -} - -void PCHTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) { - Writer.AddTypeRef(T->getPointeeType(), Record); - Code = pch::TYPE_RVALUE_REFERENCE; -} - -void PCHTypeWriter::VisitMemberPointerType(const MemberPointerType *T) { - Writer.AddTypeRef(T->getPointeeType(), Record); - Writer.AddTypeRef(QualType(T->getClass(), 0), Record); - Code = pch::TYPE_MEMBER_POINTER; -} - -void PCHTypeWriter::VisitArrayType(const ArrayType *T) { - Writer.AddTypeRef(T->getElementType(), Record); - Record.push_back(T->getSizeModifier()); // FIXME: stable values - Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values -} - -void PCHTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) { - VisitArrayType(T); - Writer.AddAPInt(T->getSize(), Record); - Code = pch::TYPE_CONSTANT_ARRAY; -} - -void PCHTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) { - VisitArrayType(T); - Code = pch::TYPE_INCOMPLETE_ARRAY; -} - -void PCHTypeWriter::VisitVariableArrayType(const VariableArrayType *T) { - VisitArrayType(T); - Writer.AddSourceLocation(T->getLBracketLoc(), Record); - Writer.AddSourceLocation(T->getRBracketLoc(), Record); - Writer.AddStmt(T->getSizeExpr()); - Code = pch::TYPE_VARIABLE_ARRAY; -} - -void PCHTypeWriter::VisitVectorType(const VectorType *T) { - Writer.AddTypeRef(T->getElementType(), Record); - Record.push_back(T->getNumElements()); - Record.push_back(T->getAltiVecSpecific()); - Code = pch::TYPE_VECTOR; -} - -void PCHTypeWriter::VisitExtVectorType(const ExtVectorType *T) { - VisitVectorType(T); - Code = pch::TYPE_EXT_VECTOR; -} - -void PCHTypeWriter::VisitFunctionType(const FunctionType *T) { - Writer.AddTypeRef(T->getResultType(), Record); - FunctionType::ExtInfo C = T->getExtInfo(); - Record.push_back(C.getNoReturn()); - Record.push_back(C.getRegParm()); - // FIXME: need to stabilize encoding of calling convention... - Record.push_back(C.getCC()); -} - -void PCHTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) { - VisitFunctionType(T); - Code = pch::TYPE_FUNCTION_NO_PROTO; -} - -void PCHTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) { - VisitFunctionType(T); - Record.push_back(T->getNumArgs()); - for (unsigned I = 0, N = T->getNumArgs(); I != N; ++I) - Writer.AddTypeRef(T->getArgType(I), Record); - Record.push_back(T->isVariadic()); - Record.push_back(T->getTypeQuals()); - Record.push_back(T->hasExceptionSpec()); - Record.push_back(T->hasAnyExceptionSpec()); - Record.push_back(T->getNumExceptions()); - for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I) - Writer.AddTypeRef(T->getExceptionType(I), Record); - Code = pch::TYPE_FUNCTION_PROTO; -} - -void PCHTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) { - Writer.AddDeclRef(T->getDecl(), Record); - Code = pch::TYPE_UNRESOLVED_USING; -} - -void PCHTypeWriter::VisitTypedefType(const TypedefType *T) { - Writer.AddDeclRef(T->getDecl(), Record); - assert(!T->isCanonicalUnqualified() && "Invalid typedef ?"); - Writer.AddTypeRef(T->getCanonicalTypeInternal(), Record); - Code = pch::TYPE_TYPEDEF; -} - -void PCHTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) { - Writer.AddStmt(T->getUnderlyingExpr()); - Code = pch::TYPE_TYPEOF_EXPR; -} - -void PCHTypeWriter::VisitTypeOfType(const TypeOfType *T) { - Writer.AddTypeRef(T->getUnderlyingType(), Record); - Code = pch::TYPE_TYPEOF; -} - -void PCHTypeWriter::VisitDecltypeType(const DecltypeType *T) { - Writer.AddStmt(T->getUnderlyingExpr()); - Code = pch::TYPE_DECLTYPE; -} - -void PCHTypeWriter::VisitTagType(const TagType *T) { - Record.push_back(T->isDependentType()); - Writer.AddDeclRef(T->getDecl(), Record); - assert(!T->isBeingDefined() && - "Cannot serialize in the middle of a type definition"); -} - -void PCHTypeWriter::VisitRecordType(const RecordType *T) { - VisitTagType(T); - Code = pch::TYPE_RECORD; -} - -void PCHTypeWriter::VisitEnumType(const EnumType *T) { - VisitTagType(T); - Code = pch::TYPE_ENUM; -} - -void -PCHTypeWriter::VisitSubstTemplateTypeParmType( - const SubstTemplateTypeParmType *T) { - Writer.AddTypeRef(QualType(T->getReplacedParameter(), 0), Record); - Writer.AddTypeRef(T->getReplacementType(), Record); - Code = pch::TYPE_SUBST_TEMPLATE_TYPE_PARM; -} - -void -PCHTypeWriter::VisitTemplateSpecializationType( - const TemplateSpecializationType *T) { - Record.push_back(T->isDependentType()); - Writer.AddTemplateName(T->getTemplateName(), Record); - Record.push_back(T->getNumArgs()); - for (TemplateSpecializationType::iterator ArgI = T->begin(), ArgE = T->end(); - ArgI != ArgE; ++ArgI) - Writer.AddTemplateArgument(*ArgI, Record); - Writer.AddTypeRef(T->isCanonicalUnqualified() ? QualType() - : T->getCanonicalTypeInternal(), - Record); - Code = pch::TYPE_TEMPLATE_SPECIALIZATION; -} - -void -PCHTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) { - VisitArrayType(T); - Writer.AddStmt(T->getSizeExpr()); - Writer.AddSourceRange(T->getBracketsRange(), Record); - Code = pch::TYPE_DEPENDENT_SIZED_ARRAY; -} - -void -PCHTypeWriter::VisitDependentSizedExtVectorType( - const DependentSizedExtVectorType *T) { - // FIXME: Serialize this type (C++ only) - assert(false && "Cannot serialize dependent sized extended vector types"); -} - -void -PCHTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) { - Record.push_back(T->getDepth()); - Record.push_back(T->getIndex()); - Record.push_back(T->isParameterPack()); - Writer.AddIdentifierRef(T->getName(), Record); - Code = pch::TYPE_TEMPLATE_TYPE_PARM; -} - -void -PCHTypeWriter::VisitDependentNameType(const DependentNameType *T) { - Record.push_back(T->getKeyword()); - Writer.AddNestedNameSpecifier(T->getQualifier(), Record); - Writer.AddIdentifierRef(T->getIdentifier(), Record); - Writer.AddTypeRef(T->isCanonicalUnqualified() ? QualType() - : T->getCanonicalTypeInternal(), - Record); - Code = pch::TYPE_DEPENDENT_NAME; -} - -void -PCHTypeWriter::VisitDependentTemplateSpecializationType( - const DependentTemplateSpecializationType *T) { - Record.push_back(T->getKeyword()); - Writer.AddNestedNameSpecifier(T->getQualifier(), Record); - Writer.AddIdentifierRef(T->getIdentifier(), Record); - Record.push_back(T->getNumArgs()); - for (DependentTemplateSpecializationType::iterator - I = T->begin(), E = T->end(); I != E; ++I) - Writer.AddTemplateArgument(*I, Record); - Code = pch::TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION; -} - -void PCHTypeWriter::VisitElaboratedType(const ElaboratedType *T) { - Record.push_back(T->getKeyword()); - Writer.AddNestedNameSpecifier(T->getQualifier(), Record); - Writer.AddTypeRef(T->getNamedType(), Record); - Code = pch::TYPE_ELABORATED; -} - -void PCHTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) { - Writer.AddDeclRef(T->getDecl(), Record); - Writer.AddTypeRef(T->getInjectedSpecializationType(), Record); - Code = pch::TYPE_INJECTED_CLASS_NAME; -} - -void PCHTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) { - Writer.AddDeclRef(T->getDecl(), Record); - Code = pch::TYPE_OBJC_INTERFACE; -} - -void PCHTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) { - Writer.AddTypeRef(T->getBaseType(), Record); - Record.push_back(T->getNumProtocols()); - for (ObjCObjectType::qual_iterator I = T->qual_begin(), - E = T->qual_end(); I != E; ++I) - Writer.AddDeclRef(*I, Record); - Code = pch::TYPE_OBJC_OBJECT; -} - -void -PCHTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) { - Writer.AddTypeRef(T->getPointeeType(), Record); - Code = pch::TYPE_OBJC_OBJECT_POINTER; -} - -namespace { - -class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> { - PCHWriter &Writer; - PCHWriter::RecordData &Record; - -public: - TypeLocWriter(PCHWriter &Writer, PCHWriter::RecordData &Record) - : Writer(Writer), 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); -}; - -} - -void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { - // nothing to do -} -void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { - Writer.AddSourceLocation(TL.getBuiltinLoc(), Record); - 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) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) { - Writer.AddSourceLocation(TL.getStarLoc(), Record); -} -void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { - Writer.AddSourceLocation(TL.getCaretLoc(), Record); -} -void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { - Writer.AddSourceLocation(TL.getAmpLoc(), Record); -} -void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { - Writer.AddSourceLocation(TL.getAmpAmpLoc(), Record); -} -void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { - Writer.AddSourceLocation(TL.getStarLoc(), Record); -} -void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) { - Writer.AddSourceLocation(TL.getLBracketLoc(), Record); - Writer.AddSourceLocation(TL.getRBracketLoc(), Record); - Record.push_back(TL.getSizeExpr() ? 1 : 0); - if (TL.getSizeExpr()) - Writer.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::VisitDependentSizedExtVectorTypeLoc( - DependentSizedExtVectorTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) { - Writer.AddSourceLocation(TL.getLParenLoc(), Record); - Writer.AddSourceLocation(TL.getRParenLoc(), Record); - for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) - Writer.AddDeclRef(TL.getArg(i), Record); -} -void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) { - VisitFunctionTypeLoc(TL); -} -void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) { - VisitFunctionTypeLoc(TL); -} -void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { - Writer.AddSourceLocation(TL.getTypeofLoc(), Record); - Writer.AddSourceLocation(TL.getLParenLoc(), Record); - Writer.AddSourceLocation(TL.getRParenLoc(), Record); -} -void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { - Writer.AddSourceLocation(TL.getTypeofLoc(), Record); - Writer.AddSourceLocation(TL.getLParenLoc(), Record); - Writer.AddSourceLocation(TL.getRParenLoc(), Record); - Writer.AddTypeSourceInfo(TL.getUnderlyingTInfo(), Record); -} -void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc( - SubstTemplateTypeParmTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitTemplateSpecializationTypeLoc( - TemplateSpecializationTypeLoc TL) { - Writer.AddSourceLocation(TL.getTemplateNameLoc(), Record); - Writer.AddSourceLocation(TL.getLAngleLoc(), Record); - Writer.AddSourceLocation(TL.getRAngleLoc(), Record); - for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) - Writer.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(), - TL.getArgLoc(i).getLocInfo(), Record); -} -void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { - Writer.AddSourceLocation(TL.getKeywordLoc(), Record); - Writer.AddSourceRange(TL.getQualifierRange(), Record); -} -void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { - Writer.AddSourceLocation(TL.getKeywordLoc(), Record); - Writer.AddSourceRange(TL.getQualifierRange(), Record); - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc( - DependentTemplateSpecializationTypeLoc TL) { - Writer.AddSourceLocation(TL.getKeywordLoc(), Record); - Writer.AddSourceRange(TL.getQualifierRange(), Record); - Writer.AddSourceLocation(TL.getNameLoc(), Record); - Writer.AddSourceLocation(TL.getLAngleLoc(), Record); - Writer.AddSourceLocation(TL.getRAngleLoc(), Record); - for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) - Writer.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(), - TL.getArgLoc(I).getLocInfo(), Record); -} -void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { - Writer.AddSourceLocation(TL.getNameLoc(), Record); -} -void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { - Record.push_back(TL.hasBaseTypeAsWritten()); - Writer.AddSourceLocation(TL.getLAngleLoc(), Record); - Writer.AddSourceLocation(TL.getRAngleLoc(), Record); - for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i) - Writer.AddSourceLocation(TL.getProtocolLoc(i), Record); -} -void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { - Writer.AddSourceLocation(TL.getStarLoc(), Record); -} - -//===----------------------------------------------------------------------===// -// PCHWriter Implementation -//===----------------------------------------------------------------------===// - -static void EmitBlockID(unsigned ID, const char *Name, - llvm::BitstreamWriter &Stream, - PCHWriter::RecordData &Record) { - Record.clear(); - Record.push_back(ID); - Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record); - - // Emit the block name if present. - if (Name == 0 || 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, - PCHWriter::RecordData &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, - PCHWriter::RecordData &Record) { -#define RECORD(X) EmitRecordID(pch::X, #X, Stream, Record) - RECORD(STMT_STOP); - RECORD(STMT_NULL_PTR); - RECORD(STMT_NULL); - RECORD(STMT_COMPOUND); - RECORD(STMT_CASE); - RECORD(STMT_DEFAULT); - RECORD(STMT_LABEL); - 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_ASM); - 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_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_IMPLICIT_VALUE_INIT); - RECORD(EXPR_VA_ARG); - RECORD(EXPR_ADDR_LABEL); - RECORD(EXPR_STMT); - RECORD(EXPR_TYPES_COMPATIBLE); - RECORD(EXPR_CHOOSE); - RECORD(EXPR_GNU_NULL); - RECORD(EXPR_SHUFFLE_VECTOR); - RECORD(EXPR_BLOCK); - RECORD(EXPR_BLOCK_DECL_REF); - RECORD(EXPR_OBJC_STRING_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(EXPR_OBJC_SUPER_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_CXX_OPERATOR_CALL); - RECORD(EXPR_CXX_CONSTRUCT); - 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_CXX_BOOL_LITERAL); - RECORD(EXPR_CXX_NULL_PTR_LITERAL); -#undef RECORD -} - -void PCHWriter::WriteBlockInfoBlock() { - RecordData Record; - Stream.EnterSubblock(llvm::bitc::BLOCKINFO_BLOCK_ID, 3); - -#define BLOCK(X) EmitBlockID(pch::X ## _ID, #X, Stream, Record) -#define RECORD(X) EmitRecordID(pch::X, #X, Stream, Record) - - // PCH Top-Level Block. - BLOCK(PCH_BLOCK); - RECORD(ORIGINAL_FILE_NAME); - RECORD(TYPE_OFFSET); - RECORD(DECL_OFFSET); - RECORD(LANGUAGE_OPTIONS); - RECORD(METADATA); - RECORD(IDENTIFIER_OFFSET); - RECORD(IDENTIFIER_TABLE); - RECORD(EXTERNAL_DEFINITIONS); - RECORD(SPECIAL_TYPES); - RECORD(STATISTICS); - RECORD(TENTATIVE_DEFINITIONS); - RECORD(UNUSED_STATIC_FUNCS); - RECORD(LOCALLY_SCOPED_EXTERNAL_DECLS); - RECORD(SELECTOR_OFFSETS); - RECORD(METHOD_POOL); - RECORD(PP_COUNTER_VALUE); - RECORD(SOURCE_LOCATION_OFFSETS); - RECORD(SOURCE_LOCATION_PRELOADS); - RECORD(STAT_CACHE); - RECORD(EXT_VECTOR_DECLS); - RECORD(VERSION_CONTROL_BRANCH_REVISION); - RECORD(UNUSED_STATIC_FUNCS); - RECORD(MACRO_DEFINITION_OFFSETS); - RECORD(CHAINED_METADATA); - - // SourceManager Block. - BLOCK(SOURCE_MANAGER_BLOCK); - RECORD(SM_SLOC_FILE_ENTRY); - RECORD(SM_SLOC_BUFFER_ENTRY); - RECORD(SM_SLOC_BUFFER_BLOB); - RECORD(SM_SLOC_INSTANTIATION_ENTRY); - RECORD(SM_LINE_TABLE); - - // Preprocessor Block. - BLOCK(PREPROCESSOR_BLOCK); - RECORD(PP_MACRO_OBJECT_LIKE); - RECORD(PP_MACRO_FUNCTION_LIKE); - RECORD(PP_TOKEN); - RECORD(PP_MACRO_INSTANTIATION); - RECORD(PP_MACRO_DEFINITION); - - // 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_PROTO); - RECORD(TYPE_FUNCTION_NO_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); - RECORD(TYPE_OBJC_OBJECT_POINTER); - RECORD(DECL_ATTR); - RECORD(DECL_TRANSLATION_UNIT); - RECORD(DECL_TYPEDEF); - 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_CLASS); - RECORD(DECL_OBJC_FORWARD_PROTOCOL); - 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_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); - // Statements and Exprs can occur in the Decls and Types block. - AddStmtsExprs(Stream, Record); -#undef RECORD -#undef BLOCK - Stream.ExitBlock(); -} - -/// \brief 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 isysroot When non-NULL, the PCH file is a relocatable PCH file and -/// the returned filename will be adjusted by this system root. -/// -/// \returns either the original filename (if it needs no adjustment) or the -/// adjusted filename (which points into the @p Filename parameter). -static const char * -adjustFilenameForRelocatablePCH(const char *Filename, const char *isysroot) { - assert(Filename && "No file name to adjust?"); - - if (!isysroot) - return Filename; - - // Verify that the filename and the system root have the same prefix. - unsigned Pos = 0; - for (; Filename[Pos] && isysroot[Pos]; ++Pos) - if (Filename[Pos] != isysroot[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 the file name has a '/' at the current position, skip over the '/'. - // We distinguish sysroot-based includes from absolute includes by the - // absence of '/' at the beginning of sysroot-based includes. - if (Filename[Pos] == '/') - ++Pos; - - return Filename + Pos; -} - -/// \brief Write the PCH metadata (e.g., i686-apple-darwin9). -void PCHWriter::WriteMetadata(ASTContext &Context, const char *isysroot) { - using namespace llvm; - - // Metadata - const TargetInfo &Target = Context.Target; - BitCodeAbbrev *MetaAbbrev = new BitCodeAbbrev(); - MetaAbbrev->Add(BitCodeAbbrevOp( - Chain ? pch::CHAINED_METADATA : pch::METADATA)); - MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // PCH major - MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // PCH minor - MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang major - MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang minor - MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable - // Target triple or chained PCH name - MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned MetaAbbrevCode = Stream.EmitAbbrev(MetaAbbrev); - - RecordData Record; - Record.push_back(Chain ? pch::CHAINED_METADATA : pch::METADATA); - Record.push_back(pch::VERSION_MAJOR); - Record.push_back(pch::VERSION_MINOR); - Record.push_back(CLANG_VERSION_MAJOR); - Record.push_back(CLANG_VERSION_MINOR); - Record.push_back(isysroot != 0); - // FIXME: This writes the absolute path for chained headers. - const std::string &BlobStr = Chain ? Chain->getFileName() : Target.getTriple().getTriple(); - Stream.EmitRecordWithBlob(MetaAbbrevCode, Record, BlobStr); - - // Original file name - SourceManager &SM = Context.getSourceManager(); - if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) { - BitCodeAbbrev *FileAbbrev = new BitCodeAbbrev(); - FileAbbrev->Add(BitCodeAbbrevOp(pch::ORIGINAL_FILE_NAME)); - FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name - unsigned FileAbbrevCode = Stream.EmitAbbrev(FileAbbrev); - - llvm::sys::Path MainFilePath(MainFile->getName()); - - MainFilePath.makeAbsolute(); - - const char *MainFileNameStr = MainFilePath.c_str(); - MainFileNameStr = adjustFilenameForRelocatablePCH(MainFileNameStr, - isysroot); - RecordData Record; - Record.push_back(pch::ORIGINAL_FILE_NAME); - Stream.EmitRecordWithBlob(FileAbbrevCode, Record, MainFileNameStr); - } - - // Repository branch/version information. - BitCodeAbbrev *RepoAbbrev = new BitCodeAbbrev(); - RepoAbbrev->Add(BitCodeAbbrevOp(pch::VERSION_CONTROL_BRANCH_REVISION)); - RepoAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag - unsigned RepoAbbrevCode = Stream.EmitAbbrev(RepoAbbrev); - Record.clear(); - Record.push_back(pch::VERSION_CONTROL_BRANCH_REVISION); - Stream.EmitRecordWithBlob(RepoAbbrevCode, Record, - getClangFullRepositoryVersion()); -} - -/// \brief Write the LangOptions structure. -void PCHWriter::WriteLanguageOptions(const LangOptions &LangOpts) { - RecordData Record; - Record.push_back(LangOpts.Trigraphs); - Record.push_back(LangOpts.BCPLComment); // BCPL-style '//' comments. - Record.push_back(LangOpts.DollarIdents); // '$' allowed in identifiers. - Record.push_back(LangOpts.AsmPreprocessor); // Preprocessor in asm mode. - Record.push_back(LangOpts.GNUMode); // True in gnu99 mode false in c99 mode (etc) - Record.push_back(LangOpts.GNUKeywords); // Allow GNU-extension keywords - Record.push_back(LangOpts.ImplicitInt); // C89 implicit 'int'. - Record.push_back(LangOpts.Digraphs); // C94, C99 and C++ - Record.push_back(LangOpts.HexFloats); // C99 Hexadecimal float constants. - Record.push_back(LangOpts.C99); // C99 Support - Record.push_back(LangOpts.Microsoft); // Microsoft extensions. - Record.push_back(LangOpts.CPlusPlus); // C++ Support - Record.push_back(LangOpts.CPlusPlus0x); // C++0x Support - Record.push_back(LangOpts.CXXOperatorNames); // Treat C++ operator names as keywords. - - Record.push_back(LangOpts.ObjC1); // Objective-C 1 support enabled. - Record.push_back(LangOpts.ObjC2); // Objective-C 2 support enabled. - Record.push_back(LangOpts.ObjCNonFragileABI); // Objective-C - // modern abi enabled. - Record.push_back(LangOpts.ObjCNonFragileABI2); // Objective-C enhanced - // modern abi enabled. - Record.push_back(LangOpts.NoConstantCFStrings); // non cfstring generation enabled.. - - Record.push_back(LangOpts.PascalStrings); // Allow Pascal strings - Record.push_back(LangOpts.WritableStrings); // Allow writable strings - Record.push_back(LangOpts.LaxVectorConversions); - Record.push_back(LangOpts.AltiVec); - Record.push_back(LangOpts.Exceptions); // Support exception handling. - Record.push_back(LangOpts.SjLjExceptions); - - Record.push_back(LangOpts.NeXTRuntime); // Use NeXT runtime. - Record.push_back(LangOpts.Freestanding); // Freestanding implementation - Record.push_back(LangOpts.NoBuiltin); // Do not use builtin functions (-fno-builtin) - - // Whether static initializers are protected by locks. - Record.push_back(LangOpts.ThreadsafeStatics); - Record.push_back(LangOpts.POSIXThreads); - Record.push_back(LangOpts.Blocks); // block extension to C - Record.push_back(LangOpts.EmitAllDecls); // Emit all declarations, even if - // they are unused. - Record.push_back(LangOpts.MathErrno); // Math functions must respect errno - // (modulo the platform support). - - Record.push_back(LangOpts.getSignedOverflowBehavior()); - Record.push_back(LangOpts.HeinousExtensions); - - Record.push_back(LangOpts.Optimize); // Whether __OPTIMIZE__ should be defined. - Record.push_back(LangOpts.OptimizeSize); // Whether __OPTIMIZE_SIZE__ should be - // defined. - Record.push_back(LangOpts.Static); // Should __STATIC__ be defined (as - // opposed to __DYNAMIC__). - Record.push_back(LangOpts.PICLevel); // The value for __PIC__, if non-zero. - - Record.push_back(LangOpts.GNUInline); // Should GNU inline semantics be - // used (instead of C99 semantics). - Record.push_back(LangOpts.NoInline); // Should __NO_INLINE__ be defined. - Record.push_back(LangOpts.AccessControl); // Whether C++ access control should - // be enabled. - Record.push_back(LangOpts.CharIsSigned); // Whether char is a signed or - // unsigned type - Record.push_back(LangOpts.ShortWChar); // force wchar_t to be unsigned short - Record.push_back(LangOpts.getGCMode()); - Record.push_back(LangOpts.getVisibilityMode()); - Record.push_back(LangOpts.getStackProtectorMode()); - Record.push_back(LangOpts.InstantiationDepth); - Record.push_back(LangOpts.OpenCL); - Record.push_back(LangOpts.CatchUndefined); - Record.push_back(LangOpts.ElideConstructors); - Record.push_back(LangOpts.SpellChecking); - Stream.EmitRecord(pch::LANGUAGE_OPTIONS, Record); -} - -//===----------------------------------------------------------------------===// -// stat cache Serialization -//===----------------------------------------------------------------------===// - -namespace { -// Trait used for the on-disk hash table of stat cache results. -class PCHStatCacheTrait { -public: - typedef const char * key_type; - typedef key_type key_type_ref; - - typedef std::pair<int, struct stat> data_type; - typedef const data_type& data_type_ref; - - static unsigned ComputeHash(const char *path) { - return llvm::HashString(path); - } - - std::pair<unsigned,unsigned> - EmitKeyDataLength(llvm::raw_ostream& Out, const char *path, - data_type_ref Data) { - unsigned StrLen = strlen(path); - clang::io::Emit16(Out, StrLen); - unsigned DataLen = 1; // result value - if (Data.first == 0) - DataLen += 4 + 4 + 2 + 8 + 8; - clang::io::Emit8(Out, DataLen); - return std::make_pair(StrLen + 1, DataLen); - } - - void EmitKey(llvm::raw_ostream& Out, const char *path, unsigned KeyLen) { - Out.write(path, KeyLen); - } - - void EmitData(llvm::raw_ostream& Out, key_type_ref, - data_type_ref Data, unsigned DataLen) { - using namespace clang::io; - uint64_t Start = Out.tell(); (void)Start; - - // Result of stat() - Emit8(Out, Data.first? 1 : 0); - - if (Data.first == 0) { - Emit32(Out, (uint32_t) Data.second.st_ino); - Emit32(Out, (uint32_t) Data.second.st_dev); - Emit16(Out, (uint16_t) Data.second.st_mode); - Emit64(Out, (uint64_t) Data.second.st_mtime); - Emit64(Out, (uint64_t) Data.second.st_size); - } - - assert(Out.tell() - Start == DataLen && "Wrong data length"); - } -}; -} // end anonymous namespace - -/// \brief Write the stat() system call cache to the PCH file. -void PCHWriter::WriteStatCache(MemorizeStatCalls &StatCalls) { - // Build the on-disk hash table containing information about every - // stat() call. - OnDiskChainedHashTableGenerator<PCHStatCacheTrait> Generator; - unsigned NumStatEntries = 0; - for (MemorizeStatCalls::iterator Stat = StatCalls.begin(), - StatEnd = StatCalls.end(); - Stat != StatEnd; ++Stat, ++NumStatEntries) { - const char *Filename = Stat->first(); - Generator.insert(Filename, Stat->second); - } - - // Create the on-disk hash table in a buffer. - llvm::SmallString<4096> StatCacheData; - uint32_t BucketOffset; - { - llvm::raw_svector_ostream Out(StatCacheData); - // Make sure that no bucket is at offset 0 - clang::io::Emit32(Out, 0); - BucketOffset = Generator.Emit(Out); - } - - // Create a blob abbreviation - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::STAT_CACHE)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned StatCacheAbbrev = Stream.EmitAbbrev(Abbrev); - - // Write the stat cache - RecordData Record; - Record.push_back(pch::STAT_CACHE); - Record.push_back(BucketOffset); - Record.push_back(NumStatEntries); - Stream.EmitRecordWithBlob(StatCacheAbbrev, Record, StatCacheData.str()); -} - -//===----------------------------------------------------------------------===// -// Source Manager Serialization -//===----------------------------------------------------------------------===// - -/// \brief Create an abbreviation for the SLocEntry that refers to a -/// file. -static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) { - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::SM_SLOC_FILE_ENTRY)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives - // FileEntry fields. - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time - // HeaderFileInfo fields. - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isImport - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // DirInfo - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumIncludes - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // ControllingMacro - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name - return Stream.EmitAbbrev(Abbrev); -} - -/// \brief Create an abbreviation for the SLocEntry that refers to a -/// buffer. -static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) { - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::SM_SLOC_BUFFER_ENTRY)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob - return Stream.EmitAbbrev(Abbrev); -} - -/// \brief Create an abbreviation for the SLocEntry that refers to a -/// buffer's blob. -static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream) { - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::SM_SLOC_BUFFER_BLOB)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob - return Stream.EmitAbbrev(Abbrev); -} - -/// \brief Create an abbreviation for the SLocEntry that refers to an -/// buffer. -static unsigned CreateSLocInstantiationAbbrev(llvm::BitstreamWriter &Stream) { - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::SM_SLOC_INSTANTIATION_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::VBR, 6)); // Token length - return Stream.EmitAbbrev(Abbrev); -} - -/// \brief 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 PCHWriter::WriteSourceManagerBlock(SourceManager &SourceMgr, - const Preprocessor &PP, - const char *isysroot) { - RecordData Record; - - // Enter the source manager block. - Stream.EnterSubblock(pch::SOURCE_MANAGER_BLOCK_ID, 3); - - // Abbreviations for the various kinds of source-location entries. - unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream); - unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream); - unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream); - unsigned SLocInstantiationAbbrv = CreateSLocInstantiationAbbrev(Stream); - - // Write the line table. - if (SourceMgr.hasLineTable()) { - LineTableInfo &LineTable = SourceMgr.getLineTable(); - - // Emit the file names - Record.push_back(LineTable.getNumFilenames()); - for (unsigned I = 0, N = LineTable.getNumFilenames(); I != N; ++I) { - // Emit the file name - const char *Filename = LineTable.getFilename(I); - Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); - unsigned FilenameLen = Filename? strlen(Filename) : 0; - Record.push_back(FilenameLen); - if (FilenameLen) - Record.insert(Record.end(), Filename, Filename + FilenameLen); - } - - // Emit the line entries - for (LineTableInfo::iterator L = LineTable.begin(), LEnd = LineTable.end(); - L != LEnd; ++L) { - // Emit the file ID - Record.push_back(L->first); - - // Emit the line entries - Record.push_back(L->second.size()); - for (std::vector<LineEntry>::iterator LE = L->second.begin(), - LEEnd = L->second.end(); - LE != LEEnd; ++LE) { - Record.push_back(LE->FileOffset); - Record.push_back(LE->LineNo); - Record.push_back(LE->FilenameID); - Record.push_back((unsigned)LE->FileKind); - Record.push_back(LE->IncludeOffset); - } - } - Stream.EmitRecord(pch::SM_LINE_TABLE, Record); - } - - // 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.sloc_entry_size() - 1); - for (unsigned I = 1, N = SourceMgr.sloc_entry_size(); I != N; ++I) { - // Get this source location entry. - const SrcMgr::SLocEntry *SLoc = &SourceMgr.getSLocEntry(I); - - // 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()) { - if (SLoc->getFile().getContentCache()->Entry) - Code = pch::SM_SLOC_FILE_ENTRY; - else - Code = pch::SM_SLOC_BUFFER_ENTRY; - } else - Code = pch::SM_SLOC_INSTANTIATION_ENTRY; - Record.clear(); - Record.push_back(Code); - - Record.push_back(SLoc->getOffset()); - if (SLoc->isFile()) { - const SrcMgr::FileInfo &File = SLoc->getFile(); - Record.push_back(File.getIncludeLoc().getRawEncoding()); - Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding - Record.push_back(File.hasLineDirectives()); - - const SrcMgr::ContentCache *Content = File.getContentCache(); - if (Content->Entry) { - // The source location entry is a file. The blob associated - // with this entry is the file name. - - // Emit size/modification time for this file. - Record.push_back(Content->Entry->getSize()); - Record.push_back(Content->Entry->getModificationTime()); - - // Emit header-search information associated with this file. - HeaderFileInfo HFI; - HeaderSearch &HS = PP.getHeaderSearchInfo(); - if (Content->Entry->getUID() < HS.header_file_size()) - HFI = HS.header_file_begin()[Content->Entry->getUID()]; - Record.push_back(HFI.isImport); - Record.push_back(HFI.DirInfo); - Record.push_back(HFI.NumIncludes); - AddIdentifierRef(HFI.ControllingMacro, Record); - - // Turn the file name into an absolute path, if it isn't already. - const char *Filename = Content->Entry->getName(); - llvm::sys::Path FilePath(Filename, strlen(Filename)); - FilePath.makeAbsolute(); - Filename = FilePath.c_str(); - - Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); - Stream.EmitRecordWithBlob(SLocFileAbbrv, Record, Filename); - - // FIXME: For now, preload all file source locations, so that - // we get the appropriate File entries in the reader. This is - // a temporary measure. - PreloadSLocs.push_back(SLocEntryOffsets.size()); - } 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.getSourceManager()); - const char *Name = Buffer->getBufferIdentifier(); - Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record, - llvm::StringRef(Name, strlen(Name) + 1)); - Record.clear(); - Record.push_back(pch::SM_SLOC_BUFFER_BLOB); - Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, - llvm::StringRef(Buffer->getBufferStart(), - Buffer->getBufferSize() + 1)); - - if (strcmp(Name, "<built-in>") == 0) - PreloadSLocs.push_back(SLocEntryOffsets.size()); - } - } else { - // The source location entry is an instantiation. - const SrcMgr::InstantiationInfo &Inst = SLoc->getInstantiation(); - Record.push_back(Inst.getSpellingLoc().getRawEncoding()); - Record.push_back(Inst.getInstantiationLocStart().getRawEncoding()); - Record.push_back(Inst.getInstantiationLocEnd().getRawEncoding()); - - // Compute the token length for this macro expansion. - unsigned NextOffset = SourceMgr.getNextOffset(); - if (I + 1 != N) - NextOffset = SourceMgr.getSLocEntry(I + 1).getOffset(); - Record.push_back(NextOffset - SLoc->getOffset() - 1); - Stream.EmitRecordWithAbbrev(SLocInstantiationAbbrv, Record); - } - } - - Stream.ExitBlock(); - - if (SLocEntryOffsets.empty()) - return; - - // Write the source-location offsets table into the PCH block. This - // table is used for lazily loading source-location information. - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::SOURCE_LOCATION_OFFSETS)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // next offset - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets - unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(Abbrev); - - Record.clear(); - Record.push_back(pch::SOURCE_LOCATION_OFFSETS); - Record.push_back(SLocEntryOffsets.size()); - Record.push_back(SourceMgr.getNextOffset()); - Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record, - (const char *)&SLocEntryOffsets.front(), - SLocEntryOffsets.size()*sizeof(SLocEntryOffsets[0])); - - // Write the source location entry preloads array, telling the PCH - // reader which source locations entries it should load eagerly. - Stream.EmitRecord(pch::SOURCE_LOCATION_PRELOADS, PreloadSLocs); -} - -//===----------------------------------------------------------------------===// -// Preprocessor Serialization -//===----------------------------------------------------------------------===// - -/// \brief Writes the block containing the serialized form of the -/// preprocessor. -/// -void PCHWriter::WritePreprocessor(const Preprocessor &PP) { - RecordData Record; - - // If the preprocessor __COUNTER__ value has been bumped, remember it. - if (PP.getCounterValue() != 0) { - Record.push_back(PP.getCounterValue()); - Stream.EmitRecord(pch::PP_COUNTER_VALUE, Record); - Record.clear(); - } - - // Enter the preprocessor block. - Stream.EnterSubblock(pch::PREPROCESSOR_BLOCK_ID, 2); - - // If the PCH file contains __DATE__ or __TIME__ emit a warning about this. - // FIXME: use diagnostics subsystem for localization etc. - if (PP.SawDateOrTime()) - fprintf(stderr, "warning: precompiled header used __DATE__ or __TIME__.\n"); - - // Loop over all the macro definitions that are live at the end of the file, - // emitting each to the PP section. - PreprocessingRecord *PPRec = PP.getPreprocessingRecord(); - for (Preprocessor::macro_iterator I = PP.macro_begin(), E = PP.macro_end(); - I != E; ++I) { - // FIXME: This emits macros in hash table order, we should do it in a stable - // order so that output is reproducible. - MacroInfo *MI = I->second; - - // Don't emit builtin macros like __LINE__ to the PCH file unless they have - // been redefined by the header (in which case they are not isBuiltinMacro). - if (MI->isBuiltinMacro()) - continue; - - AddIdentifierRef(I->first, Record); - MacroOffsets[I->first] = Stream.GetCurrentBitNo(); - Record.push_back(MI->getDefinitionLoc().getRawEncoding()); - Record.push_back(MI->isUsed()); - - unsigned Code; - if (MI->isObjectLike()) { - Code = pch::PP_MACRO_OBJECT_LIKE; - } else { - Code = pch::PP_MACRO_FUNCTION_LIKE; - - Record.push_back(MI->isC99Varargs()); - Record.push_back(MI->isGNUVarargs()); - Record.push_back(MI->getNumArgs()); - for (MacroInfo::arg_iterator I = MI->arg_begin(), E = MI->arg_end(); - I != E; ++I) - AddIdentifierRef(*I, Record); - } - - // If we have a detailed preprocessing record, record the macro definition - // ID that corresponds to this macro. - if (PPRec) - Record.push_back(getMacroDefinitionID(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); - - Record.push_back(Tok.getLocation().getRawEncoding()); - 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()); - - Stream.EmitRecord(pch::PP_TOKEN, Record); - Record.clear(); - } - ++NumMacros; - } - - // If the preprocessor has a preprocessing record, emit it. - unsigned NumPreprocessingRecords = 0; - if (PPRec) { - for (PreprocessingRecord::iterator E = PPRec->begin(), EEnd = PPRec->end(); - E != EEnd; ++E) { - Record.clear(); - - if (MacroInstantiation *MI = dyn_cast<MacroInstantiation>(*E)) { - Record.push_back(NumPreprocessingRecords++); - AddSourceLocation(MI->getSourceRange().getBegin(), Record); - AddSourceLocation(MI->getSourceRange().getEnd(), Record); - AddIdentifierRef(MI->getName(), Record); - Record.push_back(getMacroDefinitionID(MI->getDefinition())); - Stream.EmitRecord(pch::PP_MACRO_INSTANTIATION, Record); - continue; - } - - if (MacroDefinition *MD = dyn_cast<MacroDefinition>(*E)) { - // Record this macro definition's location. - pch::IdentID ID = getMacroDefinitionID(MD); - if (ID != MacroDefinitionOffsets.size()) { - if (ID > MacroDefinitionOffsets.size()) - MacroDefinitionOffsets.resize(ID + 1); - - MacroDefinitionOffsets[ID] = Stream.GetCurrentBitNo(); - } else - MacroDefinitionOffsets.push_back(Stream.GetCurrentBitNo()); - - Record.push_back(NumPreprocessingRecords++); - Record.push_back(ID); - AddSourceLocation(MD->getSourceRange().getBegin(), Record); - AddSourceLocation(MD->getSourceRange().getEnd(), Record); - AddIdentifierRef(MD->getName(), Record); - AddSourceLocation(MD->getLocation(), Record); - Stream.EmitRecord(pch::PP_MACRO_DEFINITION, Record); - continue; - } - } - } - - Stream.ExitBlock(); - - // Write the offsets table for the preprocessing record. - if (NumPreprocessingRecords > 0) { - // Write the offsets table for identifier IDs. - using namespace llvm; - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::MACRO_DEFINITION_OFFSETS)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of records - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macro defs - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned MacroDefOffsetAbbrev = Stream.EmitAbbrev(Abbrev); - - Record.clear(); - Record.push_back(pch::MACRO_DEFINITION_OFFSETS); - Record.push_back(NumPreprocessingRecords); - Record.push_back(MacroDefinitionOffsets.size()); - Stream.EmitRecordWithBlob(MacroDefOffsetAbbrev, Record, - (const char *)&MacroDefinitionOffsets.front(), - MacroDefinitionOffsets.size() * sizeof(uint32_t)); - } -} - -//===----------------------------------------------------------------------===// -// Type Serialization -//===----------------------------------------------------------------------===// - -/// \brief Write the representation of a type to the PCH stream. -void PCHWriter::WriteType(QualType T) { - pch::TypeID &ID = TypeIDs[T]; - if (ID == 0) // we haven't seen this type before. - ID = NextTypeID++; - - // Record the offset for this type. - if (TypeOffsets.size() == ID - pch::NUM_PREDEF_TYPE_IDS) - TypeOffsets.push_back(Stream.GetCurrentBitNo()); - else if (TypeOffsets.size() < ID - pch::NUM_PREDEF_TYPE_IDS) { - TypeOffsets.resize(ID + 1 - pch::NUM_PREDEF_TYPE_IDS); - TypeOffsets[ID - pch::NUM_PREDEF_TYPE_IDS] = Stream.GetCurrentBitNo(); - } - - RecordData Record; - - // Emit the type's representation. - PCHTypeWriter W(*this, Record); - - if (T.hasLocalNonFastQualifiers()) { - Qualifiers Qs = T.getLocalQualifiers(); - AddTypeRef(T.getLocalUnqualifiedType(), Record); - Record.push_back(Qs.getAsOpaqueValue()); - W.Code = pch::TYPE_EXT_QUAL; - } else { - switch (T->getTypeClass()) { - // For all of the concrete, non-dependent types, call the - // appropriate visitor function. -#define TYPE(Class, Base) \ - case Type::Class: W.Visit##Class##Type(cast<Class##Type>(T)); break; -#define ABSTRACT_TYPE(Class, Base) -#include "clang/AST/TypeNodes.def" - } - } - - // Emit the serialized record. - Stream.EmitRecord(W.Code, Record); - - // Flush any expressions that were written as part of this type. - FlushStmts(); -} - -//===----------------------------------------------------------------------===// -// Declaration Serialization -//===----------------------------------------------------------------------===// - -/// \brief 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 -/// bistream, or 0 if no block was written. -uint64_t PCHWriter::WriteDeclContextLexicalBlock(ASTContext &Context, - DeclContext *DC) { - if (DC->decls_empty()) - return 0; - - uint64_t Offset = Stream.GetCurrentBitNo(); - RecordData Record; - for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end(); - D != DEnd; ++D) - AddDeclRef(*D, Record); - - ++NumLexicalDeclContexts; - Stream.EmitRecord(pch::DECL_CONTEXT_LEXICAL, Record); - return Offset; -} - -/// \brief 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 -/// bistream, or 0 if no block was written. -uint64_t PCHWriter::WriteDeclContextVisibleBlock(ASTContext &Context, - DeclContext *DC) { - if (DC->getPrimaryContext() != DC) - return 0; - - // Since there is no name lookup into functions or methods, don't bother to - // build a visible-declarations table for these entities. - if (DC->isFunctionOrMethod()) - 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. - // FIXME: In C++ we need the visible declarations in order to "see" the - // friend declarations, is there a way to do this without writing the table ? - if (DC->isTranslationUnit() && !Context.getLangOptions().CPlusPlus) - return 0; - - // Force the DeclContext to build a its name-lookup table. - DC->lookup(DeclarationName()); - - // 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(); - RecordData Record; - StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(DC->getLookupPtr()); - if (!Map) - return 0; - - for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); - D != DEnd; ++D) { - AddDeclarationName(D->first, Record); - DeclContext::lookup_result Result = D->second.getLookupResult(Context); - Record.push_back(Result.second - Result.first); - for (; Result.first != Result.second; ++Result.first) - AddDeclRef(*Result.first, Record); - } - - if (Record.size() == 0) - return 0; - - Stream.EmitRecord(pch::DECL_CONTEXT_VISIBLE, Record); - ++NumVisibleDeclContexts; - return Offset; -} - -//===----------------------------------------------------------------------===// -// Global Method Pool and Selector Serialization -//===----------------------------------------------------------------------===// - -namespace { -// Trait used for the on-disk hash table used in the method pool. -class PCHMethodPoolTrait { - PCHWriter &Writer; - -public: - typedef Selector key_type; - typedef key_type key_type_ref; - - typedef std::pair<ObjCMethodList, ObjCMethodList> data_type; - typedef const data_type& data_type_ref; - - explicit PCHMethodPoolTrait(PCHWriter &Writer) : Writer(Writer) { } - - static unsigned ComputeHash(Selector Sel) { - unsigned N = Sel.getNumArgs(); - if (N == 0) - ++N; - unsigned R = 5381; - for (unsigned I = 0; I != N; ++I) - if (IdentifierInfo *II = Sel.getIdentifierInfoForSlot(I)) - R = llvm::HashString(II->getName(), R); - return R; - } - - std::pair<unsigned,unsigned> - EmitKeyDataLength(llvm::raw_ostream& Out, Selector Sel, - data_type_ref Methods) { - unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4); - clang::io::Emit16(Out, KeyLen); - unsigned DataLen = 2 + 2; // 2 bytes for each of the method counts - for (const ObjCMethodList *Method = &Methods.first; Method; - Method = Method->Next) - if (Method->Method) - DataLen += 4; - for (const ObjCMethodList *Method = &Methods.second; Method; - Method = Method->Next) - if (Method->Method) - DataLen += 4; - clang::io::Emit16(Out, DataLen); - return std::make_pair(KeyLen, DataLen); - } - - void EmitKey(llvm::raw_ostream& Out, Selector Sel, unsigned) { - uint64_t Start = Out.tell(); - assert((Start >> 32) == 0 && "Selector key offset too large"); - Writer.SetSelectorOffset(Sel, Start); - unsigned N = Sel.getNumArgs(); - clang::io::Emit16(Out, N); - if (N == 0) - N = 1; - for (unsigned I = 0; I != N; ++I) - clang::io::Emit32(Out, - Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I))); - } - - void EmitData(llvm::raw_ostream& Out, key_type_ref, - data_type_ref Methods, unsigned DataLen) { - uint64_t Start = Out.tell(); (void)Start; - unsigned NumInstanceMethods = 0; - for (const ObjCMethodList *Method = &Methods.first; Method; - Method = Method->Next) - if (Method->Method) - ++NumInstanceMethods; - - unsigned NumFactoryMethods = 0; - for (const ObjCMethodList *Method = &Methods.second; Method; - Method = Method->Next) - if (Method->Method) - ++NumFactoryMethods; - - clang::io::Emit16(Out, NumInstanceMethods); - clang::io::Emit16(Out, NumFactoryMethods); - for (const ObjCMethodList *Method = &Methods.first; Method; - Method = Method->Next) - if (Method->Method) - clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); - for (const ObjCMethodList *Method = &Methods.second; Method; - Method = Method->Next) - if (Method->Method) - clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); - - assert(Out.tell() - Start == DataLen && "Data length is wrong"); - } -}; -} // end anonymous namespace - -/// \brief Write the method pool into the PCH file. -/// -/// The method pool contains both instance and factory methods, stored -/// in an on-disk hash table indexed by the selector. -void PCHWriter::WriteMethodPool(Sema &SemaRef) { - using namespace llvm; - - // Create and write out the blob that contains the instance and - // factor method pools. - bool Empty = true; - { - OnDiskChainedHashTableGenerator<PCHMethodPoolTrait> Generator; - - // Create the on-disk hash table representation. Start by - // iterating through the instance method pool. - PCHMethodPoolTrait::key_type Key; - unsigned NumSelectorsInMethodPool = 0; - for (llvm::DenseMap<Selector, ObjCMethodList>::iterator - Instance = SemaRef.InstanceMethodPool.begin(), - InstanceEnd = SemaRef.InstanceMethodPool.end(); - Instance != InstanceEnd; ++Instance) { - // Check whether there is a factory method with the same - // selector. - llvm::DenseMap<Selector, ObjCMethodList>::iterator Factory - = SemaRef.FactoryMethodPool.find(Instance->first); - - if (Factory == SemaRef.FactoryMethodPool.end()) - Generator.insert(Instance->first, - std::make_pair(Instance->second, - ObjCMethodList())); - else - Generator.insert(Instance->first, - std::make_pair(Instance->second, Factory->second)); - - ++NumSelectorsInMethodPool; - Empty = false; - } - - // Now iterate through the factory method pool, to pick up any - // selectors that weren't already in the instance method pool. - for (llvm::DenseMap<Selector, ObjCMethodList>::iterator - Factory = SemaRef.FactoryMethodPool.begin(), - FactoryEnd = SemaRef.FactoryMethodPool.end(); - Factory != FactoryEnd; ++Factory) { - // Check whether there is an instance method with the same - // selector. If so, there is no work to do here. - llvm::DenseMap<Selector, ObjCMethodList>::iterator Instance - = SemaRef.InstanceMethodPool.find(Factory->first); - - if (Instance == SemaRef.InstanceMethodPool.end()) { - Generator.insert(Factory->first, - std::make_pair(ObjCMethodList(), Factory->second)); - ++NumSelectorsInMethodPool; - } - - Empty = false; - } - - if (Empty && SelectorOffsets.empty()) - return; - - // Create the on-disk hash table in a buffer. - llvm::SmallString<4096> MethodPool; - uint32_t BucketOffset; - SelectorOffsets.resize(SelVector.size()); - { - PCHMethodPoolTrait Trait(*this); - llvm::raw_svector_ostream Out(MethodPool); - // Make sure that no bucket is at offset 0 - clang::io::Emit32(Out, 0); - BucketOffset = Generator.Emit(Out, Trait); - - // For every selector that we have seen but which was not - // written into the hash table, write the selector itself and - // record it's offset. - for (unsigned I = 0, N = SelVector.size(); I != N; ++I) - if (SelectorOffsets[I] == 0) - Trait.EmitKey(Out, SelVector[I], 0); - } - - // Create a blob abbreviation - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::METHOD_POOL)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned MethodPoolAbbrev = Stream.EmitAbbrev(Abbrev); - - // Write the method pool - RecordData Record; - Record.push_back(pch::METHOD_POOL); - Record.push_back(BucketOffset); - Record.push_back(NumSelectorsInMethodPool); - Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool.str()); - - // Create a blob abbreviation for the selector table offsets. - Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::SELECTOR_OFFSETS)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // index - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(Abbrev); - - // Write the selector offsets table. - Record.clear(); - Record.push_back(pch::SELECTOR_OFFSETS); - Record.push_back(SelectorOffsets.size()); - Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record, - (const char *)&SelectorOffsets.front(), - SelectorOffsets.size() * 4); - } -} - -//===----------------------------------------------------------------------===// -// Identifier Table Serialization -//===----------------------------------------------------------------------===// - -namespace { -class PCHIdentifierTableTrait { - PCHWriter &Writer; - Preprocessor &PP; - - /// \brief Determines whether this is an "interesting" identifier - /// that needs a full IdentifierInfo structure written into the hash - /// table. - static bool isInterestingIdentifier(const IdentifierInfo *II) { - return II->isPoisoned() || - II->isExtensionToken() || - II->hasMacroDefinition() || - II->getObjCOrBuiltinID() || - II->getFETokenInfo<void>(); - } - -public: - typedef const IdentifierInfo* key_type; - typedef key_type key_type_ref; - - typedef pch::IdentID data_type; - typedef data_type data_type_ref; - - PCHIdentifierTableTrait(PCHWriter &Writer, Preprocessor &PP) - : Writer(Writer), PP(PP) { } - - static unsigned ComputeHash(const IdentifierInfo* II) { - return llvm::HashString(II->getName()); - } - - std::pair<unsigned,unsigned> - EmitKeyDataLength(llvm::raw_ostream& Out, const IdentifierInfo* II, - pch::IdentID ID) { - unsigned KeyLen = II->getLength() + 1; - unsigned DataLen = 4; // 4 bytes for the persistent ID << 1 - if (isInterestingIdentifier(II)) { - DataLen += 2; // 2 bytes for builtin ID, flags - if (II->hasMacroDefinition() && - !PP.getMacroInfo(const_cast<IdentifierInfo *>(II))->isBuiltinMacro()) - DataLen += 4; - for (IdentifierResolver::iterator D = IdentifierResolver::begin(II), - DEnd = IdentifierResolver::end(); - D != DEnd; ++D) - DataLen += sizeof(pch::DeclID); - } - clang::io::Emit16(Out, 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. - clang::io::Emit16(Out, KeyLen); - return std::make_pair(KeyLen, DataLen); - } - - void EmitKey(llvm::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()); - Out.write(II->getNameStart(), KeyLen); - } - - void EmitData(llvm::raw_ostream& Out, const IdentifierInfo* II, - pch::IdentID ID, unsigned) { - if (!isInterestingIdentifier(II)) { - clang::io::Emit32(Out, ID << 1); - return; - } - - clang::io::Emit32(Out, (ID << 1) | 0x01); - uint32_t Bits = 0; - bool hasMacroDefinition = - II->hasMacroDefinition() && - !PP.getMacroInfo(const_cast<IdentifierInfo *>(II))->isBuiltinMacro(); - Bits = (uint32_t)II->getObjCOrBuiltinID(); - Bits = (Bits << 1) | unsigned(hasMacroDefinition); - Bits = (Bits << 1) | unsigned(II->isExtensionToken()); - Bits = (Bits << 1) | unsigned(II->isPoisoned()); - Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword()); - clang::io::Emit16(Out, Bits); - - if (hasMacroDefinition) - clang::io::Emit32(Out, Writer.getMacroOffset(II)); - - // 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 IdentifierResolver::AddDeclToIdentifierChain() - // adds declarations to the end of the list (so we need to see the - // struct "status" before the function "status"). - llvm::SmallVector<Decl *, 16> Decls(IdentifierResolver::begin(II), - IdentifierResolver::end()); - for (llvm::SmallVector<Decl *, 16>::reverse_iterator D = Decls.rbegin(), - DEnd = Decls.rend(); - D != DEnd; ++D) - clang::io::Emit32(Out, Writer.getDeclID(*D)); - } -}; -} // end anonymous namespace - -/// \brief Write the identifier table into the PCH 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 PCHWriter::WriteIdentifierTable(Preprocessor &PP) { - using namespace llvm; - - // Create and write out the blob that contains the identifier - // strings. - { - OnDiskChainedHashTableGenerator<PCHIdentifierTableTrait> Generator; - - // 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 PCH - // file. - for (IdentifierTable::iterator ID = PP.getIdentifierTable().begin(), - IDEnd = PP.getIdentifierTable().end(); - ID != IDEnd; ++ID) - getIdentifierRef(ID->second); - - // Create the on-disk hash table representation. - IdentifierOffsets.resize(IdentifierIDs.size()); - for (llvm::DenseMap<const IdentifierInfo *, pch::IdentID>::iterator - ID = IdentifierIDs.begin(), IDEnd = IdentifierIDs.end(); - ID != IDEnd; ++ID) { - assert(ID->first && "NULL identifier in identifier table"); - Generator.insert(ID->first, ID->second); - } - - // Create the on-disk hash table in a buffer. - llvm::SmallString<4096> IdentifierTable; - uint32_t BucketOffset; - { - PCHIdentifierTableTrait Trait(*this, PP); - llvm::raw_svector_ostream Out(IdentifierTable); - // Make sure that no bucket is at offset 0 - clang::io::Emit32(Out, 0); - BucketOffset = Generator.Emit(Out, Trait); - } - - // Create a blob abbreviation - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::IDENTIFIER_TABLE)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned IDTableAbbrev = Stream.EmitAbbrev(Abbrev); - - // Write the identifier table - RecordData Record; - Record.push_back(pch::IDENTIFIER_TABLE); - Record.push_back(BucketOffset); - Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable.str()); - } - - // Write the offsets table for identifier IDs. - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::IDENTIFIER_OFFSET)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); - unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); - - RecordData Record; - Record.push_back(pch::IDENTIFIER_OFFSET); - Record.push_back(IdentifierOffsets.size()); - Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record, - (const char *)&IdentifierOffsets.front(), - IdentifierOffsets.size() * sizeof(uint32_t)); -} - -//===----------------------------------------------------------------------===// -// General Serialization Routines -//===----------------------------------------------------------------------===// - -/// \brief Write a record containing the given attributes. -void PCHWriter::WriteAttributeRecord(const Attr *Attr) { - RecordData Record; - for (; Attr; Attr = Attr->getNext()) { - Record.push_back(Attr->getKind()); // FIXME: stable encoding, target attrs - Record.push_back(Attr->isInherited()); - switch (Attr->getKind()) { - default: - assert(0 && "Does not support PCH writing for this attribute yet!"); - break; - case attr::Alias: - AddString(cast<AliasAttr>(Attr)->getAliasee(), Record); - break; - - case attr::AlignMac68k: - break; - - case attr::Aligned: - Record.push_back(cast<AlignedAttr>(Attr)->getAlignment()); - break; - - case attr::AlwaysInline: - break; - - case attr::AnalyzerNoReturn: - break; - - case attr::Annotate: - AddString(cast<AnnotateAttr>(Attr)->getAnnotation(), Record); - break; - - case attr::AsmLabel: - AddString(cast<AsmLabelAttr>(Attr)->getLabel(), Record); - break; - - case attr::BaseCheck: - break; - - case attr::Blocks: - Record.push_back(cast<BlocksAttr>(Attr)->getType()); // FIXME: stable - break; - - case attr::CDecl: - break; - - case attr::Cleanup: - AddDeclRef(cast<CleanupAttr>(Attr)->getFunctionDecl(), Record); - break; - - case attr::Const: - break; - - case attr::Constructor: - Record.push_back(cast<ConstructorAttr>(Attr)->getPriority()); - break; - - case attr::DLLExport: - case attr::DLLImport: - case attr::Deprecated: - break; - - case attr::Destructor: - Record.push_back(cast<DestructorAttr>(Attr)->getPriority()); - break; - - case attr::FastCall: - case attr::Final: - break; - - case attr::Format: { - const FormatAttr *Format = cast<FormatAttr>(Attr); - AddString(Format->getType(), Record); - Record.push_back(Format->getFormatIdx()); - Record.push_back(Format->getFirstArg()); - break; - } - - case attr::FormatArg: { - const FormatArgAttr *Format = cast<FormatArgAttr>(Attr); - Record.push_back(Format->getFormatIdx()); - break; - } - - case attr::Sentinel : { - const SentinelAttr *Sentinel = cast<SentinelAttr>(Attr); - Record.push_back(Sentinel->getSentinel()); - Record.push_back(Sentinel->getNullPos()); - break; - } - - case attr::GNUInline: - case attr::Hiding: - case attr::IBAction: - case attr::IBOutlet: - case attr::Malloc: - case attr::NoDebug: - case attr::NoInline: - case attr::NoReturn: - case attr::NoThrow: - break; - - case attr::IBOutletCollection: { - const IBOutletCollectionAttr *ICA = cast<IBOutletCollectionAttr>(Attr); - AddDeclRef(ICA->getClass(), Record); - break; - } - - case attr::NonNull: { - const NonNullAttr *NonNull = cast<NonNullAttr>(Attr); - Record.push_back(NonNull->size()); - Record.insert(Record.end(), NonNull->begin(), NonNull->end()); - break; - } - - case attr::CFReturnsNotRetained: - case attr::CFReturnsRetained: - case attr::NSReturnsNotRetained: - case attr::NSReturnsRetained: - case attr::ObjCException: - case attr::ObjCNSObject: - case attr::Overloadable: - case attr::Override: - break; - - case attr::MaxFieldAlignment: - Record.push_back(cast<MaxFieldAlignmentAttr>(Attr)->getAlignment()); - break; - - case attr::Packed: - break; - - case attr::Pure: - break; - - case attr::Regparm: - Record.push_back(cast<RegparmAttr>(Attr)->getNumParams()); - break; - - case attr::ReqdWorkGroupSize: - Record.push_back(cast<ReqdWorkGroupSizeAttr>(Attr)->getXDim()); - Record.push_back(cast<ReqdWorkGroupSizeAttr>(Attr)->getYDim()); - Record.push_back(cast<ReqdWorkGroupSizeAttr>(Attr)->getZDim()); - break; - - case attr::Section: - AddString(cast<SectionAttr>(Attr)->getName(), Record); - break; - - case attr::StdCall: - case attr::TransparentUnion: - case attr::Unavailable: - case attr::Unused: - case attr::Used: - break; - - case attr::Visibility: - // FIXME: stable encoding - Record.push_back(cast<VisibilityAttr>(Attr)->getVisibility()); - break; - - case attr::WarnUnusedResult: - case attr::Weak: - case attr::WeakRef: - case attr::WeakImport: - break; - } - } - - Stream.EmitRecord(pch::DECL_ATTR, Record); -} - -void PCHWriter::AddString(const std::string &Str, RecordData &Record) { - Record.push_back(Str.size()); - Record.insert(Record.end(), Str.begin(), Str.end()); -} - -/// \brief Note that the identifier II occurs at the given offset -/// within the identifier table. -void PCHWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) { - IdentifierOffsets[IdentifierIDs[II] - 1] = Offset; -} - -/// \brief Note that the selector Sel occurs at the given offset -/// within the method pool/selector table. -void PCHWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) { - unsigned ID = SelectorIDs[Sel]; - assert(ID && "Unknown selector"); - SelectorOffsets[ID - 1] = Offset; -} - -PCHWriter::PCHWriter(llvm::BitstreamWriter &Stream, PCHReader *Chain) - : Stream(Stream), Chain(Chain), NextTypeID(pch::NUM_PREDEF_TYPE_IDS), - CollectedStmts(&StmtsToEmit), NumStatements(0), NumMacros(0), - NumLexicalDeclContexts(0), NumVisibleDeclContexts(0) { - if (Chain) - Chain->setDeserializationListener(this); -} - -void PCHWriter::WritePCH(Sema &SemaRef, MemorizeStatCalls *StatCalls, - const char *isysroot) { - // 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(); - - if (Chain) - WritePCHChain(SemaRef, StatCalls, isysroot); - else - WritePCHCore(SemaRef, StatCalls, isysroot); -} - -void PCHWriter::WritePCHCore(Sema &SemaRef, MemorizeStatCalls *StatCalls, - const char *isysroot) { - using namespace llvm; - - ASTContext &Context = SemaRef.Context; - Preprocessor &PP = SemaRef.PP; - - // The translation unit is the first declaration we'll emit. - DeclIDs[Context.getTranslationUnitDecl()] = 1; - DeclTypesToEmit.push(Context.getTranslationUnitDecl()); - - // Make sure that we emit IdentifierInfos (and any attached - // declarations) for builtins. - { - IdentifierTable &Table = PP.getIdentifierTable(); - llvm::SmallVector<const char *, 32> BuiltinNames; - Context.BuiltinInfo.GetBuiltinNames(BuiltinNames, - Context.getLangOptions().NoBuiltin); - for (unsigned I = 0, N = BuiltinNames.size(); I != N; ++I) - getIdentifierRef(&Table.get(BuiltinNames[I])); - } - - // 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; - for (unsigned i = 0, e = SemaRef.TentativeDefinitions.size(); i != e; ++i) { - AddDeclRef(SemaRef.TentativeDefinitions[i], TentativeDefinitions); - } - - // Build a record containing all of the static unused functions in this file. - RecordData UnusedStaticFuncs; - for (unsigned i=0, e = SemaRef.UnusedStaticFuncs.size(); i !=e; ++i) - AddDeclRef(SemaRef.UnusedStaticFuncs[i], UnusedStaticFuncs); - - // Build a record containing all of the locally-scoped external - // declarations in this header file. Generally, this record will be - // empty. - RecordData LocallyScopedExternalDecls; - // FIXME: This is filling in the PCH file in densemap order which is - // nondeterminstic! - for (llvm::DenseMap<DeclarationName, NamedDecl *>::iterator - TD = SemaRef.LocallyScopedExternalDecls.begin(), - TDEnd = SemaRef.LocallyScopedExternalDecls.end(); - TD != TDEnd; ++TD) - AddDeclRef(TD->second, LocallyScopedExternalDecls); - - // Build a record containing all of the ext_vector declarations. - RecordData ExtVectorDecls; - for (unsigned I = 0, N = SemaRef.ExtVectorDecls.size(); I != N; ++I) - AddDeclRef(SemaRef.ExtVectorDecls[I], ExtVectorDecls); - - // Build a record containing all of the VTable uses information. - RecordData VTableUses; - VTableUses.push_back(SemaRef.VTableUses.size()); - 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 dynamic classes declarations. - RecordData DynamicClasses; - for (unsigned I = 0, N = SemaRef.DynamicClasses.size(); I != N; ++I) - AddDeclRef(SemaRef.DynamicClasses[I], DynamicClasses); - - // Write the remaining PCH contents. - RecordData Record; - Stream.EnterSubblock(pch::PCH_BLOCK_ID, 5); - WriteMetadata(Context, isysroot); - WriteLanguageOptions(Context.getLangOptions()); - if (StatCalls && !isysroot) - WriteStatCache(*StatCalls); - WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot); - // Write the record of special types. - Record.clear(); - - AddTypeRef(Context.getBuiltinVaListType(), Record); - AddTypeRef(Context.getObjCIdType(), Record); - AddTypeRef(Context.getObjCSelType(), Record); - AddTypeRef(Context.getObjCProtoType(), Record); - AddTypeRef(Context.getObjCClassType(), Record); - AddTypeRef(Context.getRawCFConstantStringType(), Record); - AddTypeRef(Context.getRawObjCFastEnumerationStateType(), Record); - AddTypeRef(Context.getFILEType(), Record); - AddTypeRef(Context.getjmp_bufType(), Record); - AddTypeRef(Context.getsigjmp_bufType(), Record); - AddTypeRef(Context.ObjCIdRedefinitionType, Record); - AddTypeRef(Context.ObjCClassRedefinitionType, Record); - AddTypeRef(Context.getRawBlockdescriptorType(), Record); - AddTypeRef(Context.getRawBlockdescriptorExtendedType(), Record); - AddTypeRef(Context.ObjCSelRedefinitionType, Record); - AddTypeRef(Context.getRawNSConstantStringType(), Record); - Record.push_back(Context.isInt128Installed()); - Stream.EmitRecord(pch::SPECIAL_TYPES, Record); - - // Keep writing types and declarations until all types and - // declarations have been written. - Stream.EnterSubblock(pch::DECLTYPES_BLOCK_ID, 3); - WriteDeclsBlockAbbrevs(); - while (!DeclTypesToEmit.empty()) { - DeclOrType DOT = DeclTypesToEmit.front(); - DeclTypesToEmit.pop(); - if (DOT.isType()) - WriteType(DOT.getType()); - else - WriteDecl(Context, DOT.getDecl()); - } - Stream.ExitBlock(); - - WritePreprocessor(PP); - WriteMethodPool(SemaRef); - WriteIdentifierTable(PP); - - // Write the type offsets array - BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::TYPE_OFFSET)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block - unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(Abbrev); - Record.clear(); - Record.push_back(pch::TYPE_OFFSET); - Record.push_back(TypeOffsets.size()); - Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, - (const char *)&TypeOffsets.front(), - TypeOffsets.size() * sizeof(TypeOffsets[0])); - - // Write the declaration offsets array - Abbrev = new BitCodeAbbrev(); - Abbrev->Add(BitCodeAbbrevOp(pch::DECL_OFFSET)); - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations - Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block - unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(Abbrev); - Record.clear(); - Record.push_back(pch::DECL_OFFSET); - Record.push_back(DeclOffsets.size()); - Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, - (const char *)&DeclOffsets.front(), - DeclOffsets.size() * sizeof(DeclOffsets[0])); - - // Write the record containing external, unnamed definitions. - if (!ExternalDefinitions.empty()) - Stream.EmitRecord(pch::EXTERNAL_DEFINITIONS, ExternalDefinitions); - - // Write the record containing tentative definitions. - if (!TentativeDefinitions.empty()) - Stream.EmitRecord(pch::TENTATIVE_DEFINITIONS, TentativeDefinitions); - - // Write the record containing unused static functions. - if (!UnusedStaticFuncs.empty()) - Stream.EmitRecord(pch::UNUSED_STATIC_FUNCS, UnusedStaticFuncs); - - // Write the record containing locally-scoped external definitions. - if (!LocallyScopedExternalDecls.empty()) - Stream.EmitRecord(pch::LOCALLY_SCOPED_EXTERNAL_DECLS, - LocallyScopedExternalDecls); - - // Write the record containing ext_vector type names. - if (!ExtVectorDecls.empty()) - Stream.EmitRecord(pch::EXT_VECTOR_DECLS, ExtVectorDecls); - - // Write the record containing VTable uses information. - if (!VTableUses.empty()) - Stream.EmitRecord(pch::VTABLE_USES, VTableUses); - - // Write the record containing dynamic classes declarations. - if (!DynamicClasses.empty()) - Stream.EmitRecord(pch::DYNAMIC_CLASSES, DynamicClasses); - - // Some simple statistics - Record.clear(); - Record.push_back(NumStatements); - Record.push_back(NumMacros); - Record.push_back(NumLexicalDeclContexts); - Record.push_back(NumVisibleDeclContexts); - Stream.EmitRecord(pch::STATISTICS, Record); - Stream.ExitBlock(); -} - -void PCHWriter::WritePCHChain(Sema &SemaRef, MemorizeStatCalls *StatCalls, - const char *isysroot) { - using namespace llvm; - - ASTContext &Context = SemaRef.Context; - Preprocessor &PP = SemaRef.PP; - (void)PP; - - RecordData Record; - Stream.EnterSubblock(pch::PCH_BLOCK_ID, 5); - WriteMetadata(Context, isysroot); - // FIXME: StatCache - // FIXME: Source manager block - - // The special types are in the chained PCH. - - // We don't start with the translation unit, but with its decls that - // don't come from the other PCH. - const TranslationUnitDecl *TU = Context.getTranslationUnitDecl(); - // FIXME: We don't want to iterate over everything here, because it needlessly - // deserializes the entire original PCH. Instead we only want to iterate over - // the stuff that's already there. - // All in good time, though. - for (DeclContext::decl_iterator I = TU->decls_begin(), E = TU->decls_end(); - I != E; ++I) { - if ((*I)->getPCHLevel() == 0) { - (*I)->dump(); - DeclTypesToEmit.push(*I); - } - } - - Stream.EnterSubblock(pch::DECLTYPES_BLOCK_ID, 3); - WriteDeclsBlockAbbrevs(); - while (!DeclTypesToEmit.empty()) { - DeclOrType DOT = DeclTypesToEmit.front(); - DeclTypesToEmit.pop(); - if (DOT.isType()) - WriteType(DOT.getType()); - else - WriteDecl(Context, DOT.getDecl()); - } - Stream.ExitBlock(); - - // FIXME: Preprocessor - // FIXME: Method pool - // FIXME: Identifier table - // FIXME: Type offsets - // FIXME: Declaration offsets - // FIXME: External unnamed definitions - // FIXME: Tentative definitions - // FIXME: Unused static functions - // FIXME: Locally-scoped external definitions - // FIXME: ext_vector type names - // FIXME: Dynamic classes declarations - // FIXME: Statistics - Stream.ExitBlock(); -} - -void PCHWriter::AddSourceLocation(SourceLocation Loc, RecordData &Record) { - Record.push_back(Loc.getRawEncoding()); -} - -void PCHWriter::AddSourceRange(SourceRange Range, RecordData &Record) { - AddSourceLocation(Range.getBegin(), Record); - AddSourceLocation(Range.getEnd(), Record); -} - -void PCHWriter::AddAPInt(const llvm::APInt &Value, RecordData &Record) { - Record.push_back(Value.getBitWidth()); - unsigned N = Value.getNumWords(); - const uint64_t* Words = Value.getRawData(); - for (unsigned I = 0; I != N; ++I) - Record.push_back(Words[I]); -} - -void PCHWriter::AddAPSInt(const llvm::APSInt &Value, RecordData &Record) { - Record.push_back(Value.isUnsigned()); - AddAPInt(Value, Record); -} - -void PCHWriter::AddAPFloat(const llvm::APFloat &Value, RecordData &Record) { - AddAPInt(Value.bitcastToAPInt(), Record); -} - -void PCHWriter::AddIdentifierRef(const IdentifierInfo *II, RecordData &Record) { - Record.push_back(getIdentifierRef(II)); -} - -pch::IdentID PCHWriter::getIdentifierRef(const IdentifierInfo *II) { - if (II == 0) - return 0; - - pch::IdentID &ID = IdentifierIDs[II]; - if (ID == 0) - ID = IdentifierIDs.size(); - return ID; -} - -pch::IdentID PCHWriter::getMacroDefinitionID(MacroDefinition *MD) { - if (MD == 0) - return 0; - - pch::IdentID &ID = MacroDefinitions[MD]; - if (ID == 0) - ID = MacroDefinitions.size(); - return ID; -} - -void PCHWriter::AddSelectorRef(const Selector SelRef, RecordData &Record) { - if (SelRef.getAsOpaquePtr() == 0) { - Record.push_back(0); - return; - } - - pch::SelectorID &SID = SelectorIDs[SelRef]; - if (SID == 0) { - SID = SelectorIDs.size(); - SelVector.push_back(SelRef); - } - Record.push_back(SID); -} - -void PCHWriter::AddCXXTemporary(const CXXTemporary *Temp, RecordData &Record) { - AddDeclRef(Temp->getDestructor(), Record); -} - -void PCHWriter::AddTemplateArgumentLocInfo(TemplateArgument::ArgKind Kind, - const TemplateArgumentLocInfo &Arg, - RecordData &Record) { - switch (Kind) { - case TemplateArgument::Expression: - AddStmt(Arg.getAsExpr()); - break; - case TemplateArgument::Type: - AddTypeSourceInfo(Arg.getAsTypeSourceInfo(), Record); - break; - case TemplateArgument::Template: - AddSourceRange(Arg.getTemplateQualifierRange(), Record); - AddSourceLocation(Arg.getTemplateNameLoc(), Record); - break; - case TemplateArgument::Null: - case TemplateArgument::Integral: - case TemplateArgument::Declaration: - case TemplateArgument::Pack: - break; - } -} - -void PCHWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg, - RecordData &Record) { - AddTemplateArgument(Arg.getArgument(), Record); - - 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(), - Record); -} - -void PCHWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo, RecordData &Record) { - if (TInfo == 0) { - AddTypeRef(QualType(), Record); - return; - } - - AddTypeRef(TInfo->getType(), Record); - TypeLocWriter TLW(*this, Record); - for (TypeLoc TL = TInfo->getTypeLoc(); !TL.isNull(); TL = TL.getNextTypeLoc()) - TLW.Visit(TL); -} - -void PCHWriter::AddTypeRef(QualType T, RecordData &Record) { - if (T.isNull()) { - Record.push_back(pch::PREDEF_TYPE_NULL_ID); - return; - } - - unsigned FastQuals = T.getLocalFastQualifiers(); - T.removeFastQualifiers(); - - if (T.hasLocalNonFastQualifiers()) { - pch::TypeID &ID = TypeIDs[T]; - if (ID == 0) { - // We haven't seen these qualifiers applied to this type before. - // Assign it a new ID. This is the only time we enqueue a - // qualified type, and it has no CV qualifiers. - ID = NextTypeID++; - DeclTypesToEmit.push(T); - } - - // Encode the type qualifiers in the type reference. - Record.push_back((ID << Qualifiers::FastWidth) | FastQuals); - return; - } - - assert(!T.hasLocalQualifiers()); - - if (const BuiltinType *BT = dyn_cast<BuiltinType>(T.getTypePtr())) { - pch::TypeID ID = 0; - switch (BT->getKind()) { - case BuiltinType::Void: ID = pch::PREDEF_TYPE_VOID_ID; break; - case BuiltinType::Bool: ID = pch::PREDEF_TYPE_BOOL_ID; break; - case BuiltinType::Char_U: ID = pch::PREDEF_TYPE_CHAR_U_ID; break; - case BuiltinType::UChar: ID = pch::PREDEF_TYPE_UCHAR_ID; break; - case BuiltinType::UShort: ID = pch::PREDEF_TYPE_USHORT_ID; break; - case BuiltinType::UInt: ID = pch::PREDEF_TYPE_UINT_ID; break; - case BuiltinType::ULong: ID = pch::PREDEF_TYPE_ULONG_ID; break; - case BuiltinType::ULongLong: ID = pch::PREDEF_TYPE_ULONGLONG_ID; break; - case BuiltinType::UInt128: ID = pch::PREDEF_TYPE_UINT128_ID; break; - case BuiltinType::Char_S: ID = pch::PREDEF_TYPE_CHAR_S_ID; break; - case BuiltinType::SChar: ID = pch::PREDEF_TYPE_SCHAR_ID; break; - case BuiltinType::WChar: ID = pch::PREDEF_TYPE_WCHAR_ID; break; - case BuiltinType::Short: ID = pch::PREDEF_TYPE_SHORT_ID; break; - case BuiltinType::Int: ID = pch::PREDEF_TYPE_INT_ID; break; - case BuiltinType::Long: ID = pch::PREDEF_TYPE_LONG_ID; break; - case BuiltinType::LongLong: ID = pch::PREDEF_TYPE_LONGLONG_ID; break; - case BuiltinType::Int128: ID = pch::PREDEF_TYPE_INT128_ID; break; - case BuiltinType::Float: ID = pch::PREDEF_TYPE_FLOAT_ID; break; - case BuiltinType::Double: ID = pch::PREDEF_TYPE_DOUBLE_ID; break; - case BuiltinType::LongDouble: ID = pch::PREDEF_TYPE_LONGDOUBLE_ID; break; - case BuiltinType::NullPtr: ID = pch::PREDEF_TYPE_NULLPTR_ID; break; - case BuiltinType::Char16: ID = pch::PREDEF_TYPE_CHAR16_ID; break; - case BuiltinType::Char32: ID = pch::PREDEF_TYPE_CHAR32_ID; break; - case BuiltinType::Overload: ID = pch::PREDEF_TYPE_OVERLOAD_ID; break; - case BuiltinType::Dependent: ID = pch::PREDEF_TYPE_DEPENDENT_ID; break; - case BuiltinType::ObjCId: ID = pch::PREDEF_TYPE_OBJC_ID; break; - case BuiltinType::ObjCClass: ID = pch::PREDEF_TYPE_OBJC_CLASS; break; - case BuiltinType::ObjCSel: ID = pch::PREDEF_TYPE_OBJC_SEL; break; - case BuiltinType::UndeducedAuto: - assert(0 && "Should not see undeduced auto here"); - break; - } - - Record.push_back((ID << Qualifiers::FastWidth) | FastQuals); - return; - } - - pch::TypeID &ID = TypeIDs[T]; - if (ID == 0) { - // We haven't seen this type before. Assign it a new ID and put it - // into the queue of types to emit. - ID = NextTypeID++; - DeclTypesToEmit.push(T); - } - - // Encode the type qualifiers in the type reference. - Record.push_back((ID << Qualifiers::FastWidth) | FastQuals); -} - -void PCHWriter::AddDeclRef(const Decl *D, RecordData &Record) { - if (D == 0) { - Record.push_back(0); - return; - } - - pch::DeclID &ID = DeclIDs[D]; - if (ID == 0) { - // We haven't seen this declaration before. Give it a new ID and - // enqueue it in the list of declarations to emit. - ID = DeclIDs.size(); - DeclTypesToEmit.push(const_cast<Decl *>(D)); - } - - Record.push_back(ID); -} - -pch::DeclID PCHWriter::getDeclID(const Decl *D) { - if (D == 0) - return 0; - - assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!"); - return DeclIDs[D]; -} - -void PCHWriter::AddDeclarationName(DeclarationName Name, RecordData &Record) { - // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc. - Record.push_back(Name.getNameKind()); - switch (Name.getNameKind()) { - case DeclarationName::Identifier: - AddIdentifierRef(Name.getAsIdentifierInfo(), Record); - break; - - case DeclarationName::ObjCZeroArgSelector: - case DeclarationName::ObjCOneArgSelector: - case DeclarationName::ObjCMultiArgSelector: - AddSelectorRef(Name.getObjCSelector(), Record); - break; - - case DeclarationName::CXXConstructorName: - case DeclarationName::CXXDestructorName: - case DeclarationName::CXXConversionFunctionName: - AddTypeRef(Name.getCXXNameType(), Record); - break; - - case DeclarationName::CXXOperatorName: - Record.push_back(Name.getCXXOverloadedOperator()); - break; - - case DeclarationName::CXXLiteralOperatorName: - AddIdentifierRef(Name.getCXXLiteralIdentifier(), Record); - break; - - case DeclarationName::CXXUsingDirective: - // No extra data to emit - break; - } -} - -void PCHWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS, - RecordData &Record) { - // Nested name specifiers usually aren't too long. I think that 8 would - // typically accomodate the vast majority. - llvm::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(), Record); - break; - - case NestedNameSpecifier::Namespace: - AddDeclRef(NNS->getAsNamespace(), Record); - break; - - case NestedNameSpecifier::TypeSpec: - case NestedNameSpecifier::TypeSpecWithTemplate: - AddTypeRef(QualType(NNS->getAsType(), 0), Record); - Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); - break; - - case NestedNameSpecifier::Global: - // Don't need to write an associated value. - break; - } - } -} - -void PCHWriter::AddTemplateName(TemplateName Name, RecordData &Record) { - TemplateName::NameKind Kind = Name.getKind(); - Record.push_back(Kind); - switch (Kind) { - case TemplateName::Template: - AddDeclRef(Name.getAsTemplateDecl(), Record); - break; - - case TemplateName::OverloadedTemplate: { - OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate(); - Record.push_back(OvT->size()); - for (OverloadedTemplateStorage::iterator I = OvT->begin(), E = OvT->end(); - I != E; ++I) - AddDeclRef(*I, Record); - break; - } - - case TemplateName::QualifiedTemplate: { - QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName(); - AddNestedNameSpecifier(QualT->getQualifier(), Record); - Record.push_back(QualT->hasTemplateKeyword()); - AddDeclRef(QualT->getTemplateDecl(), Record); - break; - } - - case TemplateName::DependentTemplate: { - DependentTemplateName *DepT = Name.getAsDependentTemplateName(); - AddNestedNameSpecifier(DepT->getQualifier(), Record); - Record.push_back(DepT->isIdentifier()); - if (DepT->isIdentifier()) - AddIdentifierRef(DepT->getIdentifier(), Record); - else - Record.push_back(DepT->getOperator()); - break; - } - } -} - -void PCHWriter::AddTemplateArgument(const TemplateArgument &Arg, - RecordData &Record) { - Record.push_back(Arg.getKind()); - switch (Arg.getKind()) { - case TemplateArgument::Null: - break; - case TemplateArgument::Type: - AddTypeRef(Arg.getAsType(), Record); - break; - case TemplateArgument::Declaration: - AddDeclRef(Arg.getAsDecl(), Record); - break; - case TemplateArgument::Integral: - AddAPSInt(*Arg.getAsIntegral(), Record); - AddTypeRef(Arg.getIntegralType(), Record); - break; - case TemplateArgument::Template: - AddTemplateName(Arg.getAsTemplate(), Record); - break; - case TemplateArgument::Expression: - AddStmt(Arg.getAsExpr()); - break; - case TemplateArgument::Pack: - Record.push_back(Arg.pack_size()); - for (TemplateArgument::pack_iterator I=Arg.pack_begin(), E=Arg.pack_end(); - I != E; ++I) - AddTemplateArgument(*I, Record); - break; - } -} - -void -PCHWriter::AddTemplateParameterList(const TemplateParameterList *TemplateParams, - RecordData &Record) { - assert(TemplateParams && "No TemplateParams!"); - AddSourceLocation(TemplateParams->getTemplateLoc(), Record); - AddSourceLocation(TemplateParams->getLAngleLoc(), Record); - AddSourceLocation(TemplateParams->getRAngleLoc(), Record); - Record.push_back(TemplateParams->size()); - for (TemplateParameterList::const_iterator - P = TemplateParams->begin(), PEnd = TemplateParams->end(); - P != PEnd; ++P) - AddDeclRef(*P, Record); -} - -/// \brief Emit a template argument list. -void -PCHWriter::AddTemplateArgumentList(const TemplateArgumentList *TemplateArgs, - RecordData &Record) { - assert(TemplateArgs && "No TemplateArgs!"); - Record.push_back(TemplateArgs->flat_size()); - for (int i=0, e = TemplateArgs->flat_size(); i != e; ++i) - AddTemplateArgument(TemplateArgs->get(i), Record); -} - - -void -PCHWriter::AddUnresolvedSet(const UnresolvedSetImpl &Set, RecordData &Record) { - Record.push_back(Set.size()); - for (UnresolvedSetImpl::const_iterator - I = Set.begin(), E = Set.end(); I != E; ++I) { - AddDeclRef(I.getDecl(), Record); - Record.push_back(I.getAccess()); - } -} - -void PCHWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base, - RecordData &Record) { - Record.push_back(Base.isVirtual()); - Record.push_back(Base.isBaseOfClass()); - Record.push_back(Base.getAccessSpecifierAsWritten()); - AddTypeRef(Base.getType(), Record); - AddSourceRange(Base.getSourceRange(), Record); -} - -void PCHWriter::TypeRead(pch::TypeID ID, QualType T) { -} - -void PCHWriter::DeclRead(pch::DeclID ID, const Decl *D) { -} - |
