CodeGenTBAA - This class organizes the cross-module state that is used while lowering AST types to LLVM types. More...

#include "/opt/doxygen-docs/src/llvm/tools/clang/lib/CodeGen/CodeGenTBAA.h"

Public Member Functions
	CodeGenTBAA (ASTContext &Ctx, llvm::Module &M, const CodeGenOptions &CGO, const LangOptions &Features, MangleContext &MContext)

	~CodeGenTBAA ()

llvm::MDNode *	getTypeInfo (QualType QTy)
	getTypeInfo - Get metadata used to describe accesses to objects of the given type. More...

TBAAAccessInfo	getAccessInfo (QualType AccessType)
	getAccessInfo - Get TBAA information that describes an access to an object of the given type. More...

TBAAAccessInfo	getVTablePtrAccessInfo (llvm::Type *VTablePtrType)
	getVTablePtrAccessInfo - Get the TBAA information that describes an access to a virtual table pointer. More...

llvm::MDNode *	getTBAAStructInfo (QualType QTy)
	getTBAAStructInfo - Get the TBAAStruct MDNode to be used for a memcpy of the given type. More...

llvm::MDNode *	getBaseTypeInfo (QualType QTy)
	getBaseTypeInfo - Get metadata that describes the given base access type. More...

llvm::MDNode *	getAccessTagInfo (TBAAAccessInfo Info)
	getAccessTagInfo - Get TBAA tag for a given memory access. More...

TBAAAccessInfo	mergeTBAAInfoForCast (TBAAAccessInfo SourceInfo, TBAAAccessInfo TargetInfo)
	mergeTBAAInfoForCast - Get merged TBAA information for the purpose of type casts. More...

TBAAAccessInfo	mergeTBAAInfoForConditionalOperator (TBAAAccessInfo InfoA, TBAAAccessInfo InfoB)
	mergeTBAAInfoForConditionalOperator - Get merged TBAA information for the purpose of conditional operator. More...

TBAAAccessInfo	mergeTBAAInfoForMemoryTransfer (TBAAAccessInfo DestInfo, TBAAAccessInfo SrcInfo)
	mergeTBAAInfoForMemoryTransfer - Get merged TBAA information for the purpose of memory transfer calls. More...

Detailed Description

CodeGenTBAA - This class organizes the cross-module state that is used while lowering AST types to LLVM types.

Definition at line 118 of file CodeGenTBAA.h.

Constructor & Destructor Documentation

◆ CodeGenTBAA()

CodeGenTBAA::CodeGenTBAA	(	ASTContext &	Ctx,
		llvm::Module &	M,
		const CodeGenOptions &	CGO,
		const LangOptions &	Features,
		MangleContext &	MContext
	)

Definition at line 33 of file CodeGenTBAA.cpp.

◆ ~CodeGenTBAA()

CodeGenTBAA::~CodeGenTBAA ( )

Definition at line 41 of file CodeGenTBAA.cpp.

Member Function Documentation

◆ getAccessInfo()

TBAAAccessInfo CodeGenTBAA::getAccessInfo ( QualType AccessType )

getAccessInfo - Get TBAA information that describes an access to an object of the given type.

Definition at line 218 of file CodeGenTBAA.cpp.

References clang::CodeGen::TBAAAccessInfo::getIncompleteInfo(), clang::CodeGen::TBAAAccessInfo::getMayAliasInfo(), clang::CharUnits::getQuantity(), getTypeInfo(), clang::ASTContext::getTypeSizeInChars(), clang::Type::isIncompleteType(), and TypeHasMayAlias().

◆ getAccessTagInfo()

llvm::MDNode * CodeGenTBAA::getAccessTagInfo ( TBAAAccessInfo Info )

getAccessTagInfo - Get TBAA tag for a given memory access.

Definition at line 355 of file CodeGenTBAA.cpp.

References clang::CodeGen::TBAAAccessInfo::AccessType, clang::CodeGen::TBAAAccessInfo::BaseType, clang::CodeGen::TBAAAccessInfo::isIncomplete(), clang::CodeGen::TBAAAccessInfo::isMayAlias(), clang::CodeGen::TBAAAccessInfo::Offset, and clang::CodeGen::TBAAAccessInfo::Size.

Referenced by getVTablePtrAccessInfo().

◆ getBaseTypeInfo()

llvm::MDNode * CodeGenTBAA::getBaseTypeInfo ( QualType QTy )

getBaseTypeInfo - Get metadata that describes the given base access type.

Return null if the type is not suitable for use in TBAA access tags.

Definition at line 340 of file CodeGenTBAA.cpp.

References clang::ASTContext::getCanonicalType(), clang::CanQual< T >::getTypePtr(), and isValidBaseType().

Referenced by getTBAAStructInfo(), and getTypeInfo().

◆ getTBAAStructInfo()

llvm::MDNode * CodeGenTBAA::getTBAAStructInfo ( QualType QTy )

getTBAAStructInfo - Get the TBAAStruct MDNode to be used for a memcpy of the given type.

Definition at line 281 of file CodeGenTBAA.cpp.

References clang::RecordDecl::fields(), clang::ASTContext::getASTRecordLayout(), getBaseTypeInfo(), clang::ASTContext::getCanonicalType(), clang::RecordDecl::getDefinition(), clang::ASTRecordLayout::getFieldOffset(), clang::NamedDecl::getName(), clang::CharUnits::getQuantity(), getTypeInfo(), clang::CanQual< T >::getTypePtr(), clang::ASTContext::getTypeSizeInChars(), Id, isValidBaseType(), clang::MangleContext::mangleTypeName(), Parent, clang::ASTContext::toCharUnitsFromBits(), and TypeHasMayAlias().

◆ getTypeInfo()

llvm::MDNode * CodeGenTBAA::getTypeInfo ( QualType QTy )

getTypeInfo - Get metadata used to describe accesses to objects of the given type.

Definition at line 188 of file CodeGenTBAA.cpp.

References getBaseTypeInfo(), clang::ASTContext::getCanonicalType(), clang::CanQual< T >::getTypePtr(), isValidBaseType(), and TypeHasMayAlias().

Referenced by getAccessInfo(), getTBAAStructInfo(), getVTablePtrAccessInfo(), and isValidBaseType().

◆ getVTablePtrAccessInfo()

TBAAAccessInfo CodeGenTBAA::getVTablePtrAccessInfo ( llvm::Type * VTablePtrType )

getVTablePtrAccessInfo - Get the TBAA information that describes an access to a virtual table pointer.

Definition at line 231 of file CodeGenTBAA.cpp.

References clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), getAccessTagInfo(), clang::Type::getAs(), clang::ASTContext::getASTRecordLayout(), clang::ASTContext::getCharWidth(), clang::RecordDecl::getDefinition(), clang::ASTRecordLayout::getFieldOffset(), clang::CharUnits::getQuantity(), getTypeInfo(), clang::ASTContext::getTypeSizeInChars(), clang::RecordDecl::hasFlexibleArrayMember(), clang::CodeGen::MayAlias, and TypeHasMayAlias().

◆ mergeTBAAInfoForCast()

TBAAAccessInfo CodeGenTBAA::mergeTBAAInfoForCast	(	TBAAAccessInfo	SourceInfo,
		TBAAAccessInfo	TargetInfo
	)

mergeTBAAInfoForCast - Get merged TBAA information for the purpose of type casts.

Definition at line 383 of file CodeGenTBAA.cpp.

References clang::CodeGen::TBAAAccessInfo::getMayAliasInfo(), and clang::CodeGen::TBAAAccessInfo::isMayAlias().

◆ mergeTBAAInfoForConditionalOperator()

TBAAAccessInfo CodeGenTBAA::mergeTBAAInfoForConditionalOperator	(	TBAAAccessInfo	InfoA,
		TBAAAccessInfo	InfoB
	)

mergeTBAAInfoForConditionalOperator - Get merged TBAA information for the purpose of conditional operator.

Definition at line 391 of file CodeGenTBAA.cpp.

References clang::CodeGen::TBAAAccessInfo::getMayAliasInfo(), and clang::CodeGen::TBAAAccessInfo::isMayAlias().

◆ mergeTBAAInfoForMemoryTransfer()

TBAAAccessInfo CodeGenTBAA::mergeTBAAInfoForMemoryTransfer	(	TBAAAccessInfo	DestInfo,
		TBAAAccessInfo	SrcInfo
	)

mergeTBAAInfoForMemoryTransfer - Get merged TBAA information for the purpose of memory transfer calls.

Definition at line 409 of file CodeGenTBAA.cpp.

References clang::CodeGen::TBAAAccessInfo::getMayAliasInfo(), and clang::CodeGen::TBAAAccessInfo::isMayAlias().

The documentation for this class was generated from the following files:

lib/CodeGen/CodeGenTBAA.h
lib/CodeGen/CodeGenTBAA.cpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ CodeGenTBAA()

◆ ~CodeGenTBAA()

Member Function Documentation

◆ getAccessInfo()

◆ getAccessTagInfo()

◆ getBaseTypeInfo()

◆ getTBAAStructInfo()

◆ getTypeInfo()

◆ getVTablePtrAccessInfo()

◆ mergeTBAAInfoForCast()

◆ mergeTBAAInfoForConditionalOperator()

◆ mergeTBAAInfoForMemoryTransfer()