clang::ItaniumVTableContext Class Reference

#include "clang/AST/VTableBuilder.h"

Inheritance diagram for clang::ItaniumVTableContext:

Public Types
enum	VTableComponentLayout { Pointer , Relative }
typedef llvm::DenseMap< const CXXMethodDecl *, const CXXMethodDecl * >	OriginalMethodMapTy
Public Types inherited from clang::VTableContextBase
typedef SmallVector< ThunkInfo, 1 >	ThunkInfoVectorTy

Public Member Functions
	ItaniumVTableContext (ASTContext &Context, VTableComponentLayout ComponentLayout=Pointer)
	~ItaniumVTableContext () override
const VTableLayout &	getVTableLayout (const CXXRecordDecl *RD)
std::unique_ptr< VTableLayout >	createConstructionVTableLayout (const CXXRecordDecl *MostDerivedClass, CharUnits MostDerivedClassOffset, bool MostDerivedClassIsVirtual, const CXXRecordDecl *LayoutClass)
uint64_t	getMethodVTableIndex (GlobalDecl GD)
	Locate a virtual function in the vtable.
CharUnits	getVirtualBaseOffsetOffset (const CXXRecordDecl *RD, const CXXRecordDecl *VBase)
	Return the offset in chars (relative to the vtable address point) where the offset of the virtual base that contains the given base is stored, otherwise, if no virtual base contains the given class, return 0.
GlobalDecl	findOriginalMethod (GlobalDecl GD)
	Return the method that added the v-table slot that will be used to call the given method.
const CXXMethodDecl *	findOriginalMethodInMap (const CXXMethodDecl *MD) const
void	setOriginalMethod (const CXXMethodDecl *Key, const CXXMethodDecl *Val)
const OriginalMethodMapTy &	getOriginalMethodMap ()
	This method is reserved for the implementation and shouldn't be used directly.
VTableComponentLayout	getVTableComponentLayout () const
bool	isPointerLayout () const
bool	isRelativeLayout () const
Public Member Functions inherited from clang::VTableContextBase
bool	isMicrosoft () const
virtual	~VTableContextBase ()
virtual const ThunkInfoVectorTy *	getThunkInfo (GlobalDecl GD)

Static Public Member Functions
static bool	classof (const VTableContextBase *VT)
Static Public Member Functions inherited from clang::VTableContextBase
static bool	hasVtableSlot (const CXXMethodDecl *MD)
	Determine whether this function should be assigned a vtable slot.

Additional Inherited Members
Public Attributes inherited from clang::VTableContextBase
bool	IsMicrosoftABI
Protected Types inherited from clang::VTableContextBase
typedef llvm::DenseMap< const CXXMethodDecl *, ThunkInfoVectorTy >	ThunksMapTy
Protected Member Functions inherited from clang::VTableContextBase
virtual void	computeVTableRelatedInformation (const CXXRecordDecl *RD)=0
	Compute and store all vtable related information (vtable layout, vbase offset offsets, thunks etc) for the given record decl.
	VTableContextBase (bool MS)
Protected Attributes inherited from clang::VTableContextBase
ThunksMapTy	Thunks
	Contains all thunks that a given method decl will need.

Detailed Description

Definition at line 363 of file VTableBuilder.h.

Member Typedef Documentation

OriginalMethodMapTy

typedef llvm::DenseMap<const CXXMethodDecl *, const CXXMethodDecl *> clang::ItaniumVTableContext::OriginalMethodMapTy

Definition at line 366 of file VTableBuilder.h.

Member Enumeration Documentation

VTableComponentLayout

enum clang::ItaniumVTableContext::VTableComponentLayout

Enumerator
Pointer	Components in the vtable are pointers to other structs/functions.
Relative	Components in the vtable are relative offsets between the vtable and the other structs/functions.

Definition at line 398 of file VTableBuilder.h.

Constructor & Destructor Documentation

ItaniumVTableContext()

ItaniumVTableContext::ItaniumVTableContext	(	ASTContext &	Context,
		VTableComponentLayout	ComponentLayout = Pointer
	)

Definition at line 2332 of file VTableBuilder.cpp.

~ItaniumVTableContext()

ItaniumVTableContext::~ItaniumVTableContext ( )

override

Definition at line 2336 of file VTableBuilder.cpp.

Member Function Documentation

classof()

static bool clang::ItaniumVTableContext::classof ( const VTableContextBase *  VT )

inlinestatic

Definition at line 457 of file VTableBuilder.h.

References clang::VTableContextBase::isMicrosoft().

createConstructionVTableLayout()

std::unique_ptr< VTableLayout > ItaniumVTableContext::createConstructionVTableLayout	(	const CXXRecordDecl *	MostDerivedClass,
		CharUnits	MostDerivedClassOffset,
		bool	MostDerivedClassIsVirtual,
		const CXXRecordDecl *	LayoutClass
	)

Definition at line 2459 of file VTableBuilder.cpp.

References CreateVTableLayout().

findOriginalMethod()

GlobalDecl ItaniumVTableContext::findOriginalMethod

(

GlobalDecl

GD

)

Return the method that added the v-table slot that will be used to call the given method.

In the Itanium ABI, where overrides always cause methods to be added to the primary v-table if they're not already there, this will be the first declaration in the primary base class chain for which the return type adjustment is trivial.

Definition at line 2381 of file VTableBuilder.cpp.

References findOriginalMethodInMap(), clang::GlobalDecl::getDecl(), and clang::GlobalDecl::getDtorType().

Referenced by BuildAppleKextVirtualCall().

findOriginalMethodInMap()

const CXXMethodDecl * ItaniumVTableContext::findOriginalMethodInMap

(

const CXXMethodDecl *

MD

)

const

Definition at line 2392 of file VTableBuilder.cpp.

Referenced by findOriginalMethod().

getMethodVTableIndex()

uint64_t ItaniumVTableContext::getMethodVTableIndex

(

GlobalDecl

GD

)

Locate a virtual function in the vtable.

Return the index (relative to the vtable address point) where the function pointer for the given virtual function is stored.

Definition at line 2338 of file VTableBuilder.cpp.

References clang::GlobalDecl::getCanonicalDecl(), clang::GlobalDecl::getDecl(), and clang::DeclContext::getParent().

Referenced by BuildAppleKextVirtualCall().

getOriginalMethodMap()

const OriginalMethodMapTy & clang::ItaniumVTableContext::getOriginalMethodMap ( )

inline

This method is reserved for the implementation and shouldn't be used directly.

Definition at line 453 of file VTableBuilder.h.

getVirtualBaseOffsetOffset()

CharUnits ItaniumVTableContext::getVirtualBaseOffsetOffset	(	const CXXRecordDecl *	RD,
		const CXXRecordDecl *	VBase
	)

Return the offset in chars (relative to the vtable address point) where the offset of the virtual base that contains the given base is stored, otherwise, if no virtual base contains the given class, return 0.

Base must be a virtual base class or an unambiguous base.

Definition at line 2354 of file VTableBuilder.cpp.

References clang::CharUnits::Zero().

getVTableComponentLayout()

VTableComponentLayout clang::ItaniumVTableContext::getVTableComponentLayout ( ) const

inline

Definition at line 461 of file VTableBuilder.h.

getVTableLayout()

const VTableLayout & clang::ItaniumVTableContext::getVTableLayout ( const CXXRecordDecl *  RD )

inline

Definition at line 411 of file VTableBuilder.h.

Referenced by BuildAppleKextVirtualCall(), and clang::CodeGen::CodeGenVTables::EmitVTTDefinition().

isPointerLayout()

bool clang::ItaniumVTableContext::isPointerLayout ( ) const

inline

Definition at line 465 of file VTableBuilder.h.

References Pointer.

isRelativeLayout()

bool clang::ItaniumVTableContext::isRelativeLayout ( ) const

inline

Definition at line 466 of file VTableBuilder.h.

References Relative.

Referenced by ApplyNonVirtualAndVirtualOffset(), clang::CodeGen::CodeGenVTables::GenerateConstructionVTable(), performTypeAdjustment(), and UseRelativeLayout().

setOriginalMethod()

void clang::ItaniumVTableContext::setOriginalMethod ( const CXXMethodDecl *  Key, const CXXMethodDecl *  Val  )

inline

Definition at line 447 of file VTableBuilder.h.

---

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

• include/clang/AST/VTableBuilder.h
• lib/AST/VTableBuilder.cpp