llvm::TrackingVH< ValueTy > Class Template Reference

Value handle that tracks a Value across RAUW. More...

#include "llvm/IR/ValueHandle.h"

Inheritance diagram for llvm::TrackingVH< ValueTy >:

Public Member Functions
ValueTy *	getValPtr () const
void	setValPtr (ValueTy *P)
	TrackingVH ()=default
	TrackingVH (ValueTy *P)
	operator ValueTy * () const
ValueTy *	operator= (ValueTy *RHS)
ValueTy *	operator-> () const
ValueTy &	operator* () const

Static Public Member Functions
static Value *	GetAsValue (Value *V)
static Value *	GetAsValue (const Value *V)

Detailed Description

template<typename ValueTy>
class llvm::TrackingVH< ValueTy >

Value handle that tracks a Value across RAUW.

TrackingVH is designed for situations where a client needs to hold a handle to a Value (or subclass) across some operations which may move that value, but should never destroy it or replace it with some unacceptable type.

It is an error to attempt to replace a value with one of a type which is incompatible with any of its outstanding TrackingVHs.

It is an error to read from a TrackingVH that does not point to a valid value. A TrackingVH is said to not point to a valid value if either it hasn't yet been assigned a value yet or because the value it was tracking has since been deleted.

Assigning a value to a TrackingVH is always allowed, even if said TrackingVH no longer points to a valid value.

Definition at line 331 of file ValueHandle.h.

Constructor & Destructor Documentation

TrackingVH() [1/2]

template<typename ValueTy >

llvm::TrackingVH< ValueTy >::TrackingVH ( )

default

TrackingVH() [2/2]

template<typename ValueTy >

llvm::TrackingVH< ValueTy >::TrackingVH ( ValueTy *  P )

inline

Definition at line 361 of file ValueHandle.h.

References P, and llvm::TrackingVH< ValueTy >::setValPtr().

Member Function Documentation

GetAsValue() [1/2]

template<typename ValueTy >

static Value * llvm::TrackingVH< ValueTy >::GetAsValue ( const Value *  V )

inlinestatic

Definition at line 357 of file ValueHandle.h.

GetAsValue() [2/2]

template<typename ValueTy >

static Value * llvm::TrackingVH< ValueTy >::GetAsValue ( Value *  V )

inlinestatic

Definition at line 356 of file ValueHandle.h.

Referenced by llvm::TrackingVH< ValueTy >::setValPtr().

getValPtr()

template<typename ValueTy >

ValueTy * llvm::TrackingVH< ValueTy >::getValPtr ( ) const

inline

Definition at line 335 of file ValueHandle.h.

References assert(), and llvm::WeakTrackingVH::pointsToAliveValue().

Referenced by llvm::TrackingVH< llvm::Value >::operator llvm::Value *(), llvm::TrackingVH< ValueTy >::operator*(), llvm::TrackingVH< ValueTy >::operator->(), llvm::TrackingVH< ValueTy >::operator=(), llvm::coro::AsyncABI::splitCoroutine(), and llvm::coro::AnyRetconABI::splitCoroutine().

operator ValueTy *()

template<typename ValueTy >

llvm::TrackingVH< ValueTy >::operator ValueTy * ( ) const

inline

Definition at line 363 of file ValueHandle.h.

operator*()

template<typename ValueTy >

ValueTy & llvm::TrackingVH< ValueTy >::operator* ( ) const

inline

Definition at line 373 of file ValueHandle.h.

References llvm::TrackingVH< ValueTy >::getValPtr().

operator->()

template<typename ValueTy >

ValueTy * llvm::TrackingVH< ValueTy >::operator-> ( ) const

inline

Definition at line 372 of file ValueHandle.h.

References llvm::TrackingVH< ValueTy >::getValPtr().

operator=()

template<typename ValueTy >

ValueTy * llvm::TrackingVH< ValueTy >::operator= ( ValueTy *  RHS )

inline

Definition at line 367 of file ValueHandle.h.

References llvm::TrackingVH< ValueTy >::getValPtr(), RHS, and llvm::TrackingVH< ValueTy >::setValPtr().

setValPtr()

template<typename ValueTy >

void llvm::TrackingVH< ValueTy >::setValPtr ( ValueTy *  P )

inline

Definition at line 348 of file ValueHandle.h.

References llvm::TrackingVH< ValueTy >::GetAsValue(), and P.

Referenced by llvm::TrackingVH< ValueTy >::operator=(), and llvm::TrackingVH< ValueTy >::TrackingVH().

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

• include/llvm/IR/ValueHandle.h