llvm::WeakTrackingVH Class Reference

Value handle that is nullable, but tries to track the Value. More...

#include "llvm/IR/ValueHandle.h"

Inheritance diagram for llvm::WeakTrackingVH:

Collaboration diagram for llvm::WeakTrackingVH:

Public Member Functions
	WeakTrackingVH ()
	WeakTrackingVH (Value *P)
	WeakTrackingVH (const WeakTrackingVH &RHS)
WeakTrackingVH &	operator= (const WeakTrackingVH &RHS)=default
Value *	operator= (Value *RHS)
Value *	operator= (const ValueHandleBase &RHS)
	operator Value * () const
bool	pointsToAliveValue () const
Public Member Functions inherited from llvm::ValueHandleBase
	ValueHandleBase (HandleBaseKind Kind)
	ValueHandleBase (HandleBaseKind Kind, Value *V)
	~ValueHandleBase ()
Value *	operator= (Value *RHS)
Value *	operator= (const ValueHandleBase &RHS)
Value *	operator-> () const
Value &	operator* () const

Additional Inherited Members
Static Public Member Functions inherited from llvm::ValueHandleBase
static void	ValueIsDeleted (Value *V)
static void	ValueIsRAUWd (Value *Old, Value *New)
Protected Types inherited from llvm::ValueHandleBase
enum	HandleBaseKind { Assert, Callback, Weak, WeakTracking }
	This indicates what sub class the handle actually is. More...
Protected Member Functions inherited from llvm::ValueHandleBase
	ValueHandleBase (const ValueHandleBase &RHS)
	ValueHandleBase (HandleBaseKind Kind, const ValueHandleBase &RHS)
Value *	getValPtr () const
void	RemoveFromUseList ()
	Remove this ValueHandle from its current use list. More...
void	clearValPtr ()
	Clear the underlying pointer without clearing the use list. More...
Static Protected Member Functions inherited from llvm::ValueHandleBase
static bool	isValid (Value *V)

Detailed Description

Value handle that is nullable, but tries to track the Value.

This is a value handle that tries hard to point to a Value, even across RAUW operations, but will null itself out if the value is destroyed. this is useful for advisory sorts of information, but should not be used as the key of a map (since the map would have to rearrange itself when the pointer changes).

Definition at line 182 of file ValueHandle.h.

Constructor & Destructor Documentation

WeakTrackingVH() [1/3]

llvm::WeakTrackingVH::WeakTrackingVH ( )

inline

Definition at line 184 of file ValueHandle.h.

WeakTrackingVH() [2/3]

llvm::WeakTrackingVH::WeakTrackingVH ( Value *  P )

inline

Definition at line 185 of file ValueHandle.h.

WeakTrackingVH() [3/3]

llvm::WeakTrackingVH::WeakTrackingVH ( const WeakTrackingVH &  RHS )

inline

Definition at line 186 of file ValueHandle.h.

References llvm::ValueHandleBase::operator=().

Member Function Documentation

operator Value *()

llvm::WeakTrackingVH::operator Value * ( ) const

inline

Definition at line 198 of file ValueHandle.h.

References llvm::ValueHandleBase::getValPtr().

operator=() [1/3]

WeakTrackingVH& llvm::WeakTrackingVH::operator= ( const WeakTrackingVH &  RHS )

default

operator=() [2/3]

Value* llvm::WeakTrackingVH::operator= ( Value *  RHS )

inline

Definition at line 191 of file ValueHandle.h.

References llvm::ValueHandleBase::operator=().

operator=() [3/3]

Value* llvm::WeakTrackingVH::operator= ( const ValueHandleBase &  RHS )

inline

Definition at line 194 of file ValueHandle.h.

References llvm::ValueHandleBase::operator=().

pointsToAliveValue()

bool llvm::WeakTrackingVH::pointsToAliveValue ( ) const

inline

Definition at line 202 of file ValueHandle.h.

References llvm::ValueHandleBase::getValPtr(), and llvm::ValueHandleBase::isValid().

Referenced by llvm::TrackingVH< llvm::Value >::getValPtr(), and IsNonLocalValue().

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

• include/llvm/IR/ValueHandle.h