llvm::Use Class Reference

A Use represents the edge between a Value definition and its users. More...

#include "llvm/IR/Use.h"

Public Member Functions
	Use (const Use &U)=delete
void	swap (Use &RHS)
	Provide a fast substitute to std::swap<Use> that also works with less standard-compliant compilers.
	operator Value * () const
Value *	get () const
User *	getUser () const
	Returns the User that contains this Use.
void	set (Value *Val)
Value *	operator= (Value *RHS)
const Use &	operator= (const Use &RHS)
Value *	operator-> ()
const Value *	operator-> () const
Use *	getNext () const
unsigned	getOperandNo () const
	Return the operand # of this use in its User.

Static Public Member Functions
static void	zap (Use *Start, const Use *Stop, bool del=false)
	Destroys Use operands when the number of operands of a User changes.

Friends
class	Value
class	User

Detailed Description

A Use represents the edge between a Value definition and its users.

This is notionally a two-dimensional linked list. It supports traversing all of the uses for a particular value definition. It also supports jumping directly to the used value when we arrive from the User's operands, and jumping directly to the User when we arrive from the Value's uses.

Definition at line 43 of file Use.h.

Constructor & Destructor Documentation

Use()

llvm::Use::Use ( const Use &  U )

delete

References swap().

Member Function Documentation

get()

Value * llvm::Use::get ( ) const

inline

Definition at line 66 of file Use.h.

Referenced by llvm::User::getDescriptor(), llvm::simplify_type< const Use >::getSimplifiedValue(), llvm::simplify_type< Use >::getSimplifiedValue(), and operandWithNewAddressSpaceOrCreatePoison().

getNext()

Use * llvm::Use::getNext ( ) const

inline

Definition at line 82 of file Use.h.

getOperandNo()

unsigned llvm::Use::getOperandNo

(

)

const

Return the operand # of this use in its User.

Definition at line 31 of file Use.cpp.

Referenced by allUsesTruncate(), CombineBaseUpdate(), combineOp_VLToVWOp_VL(), combineVSelectToBLENDV(), dominatesAllUsesOf(), llvm::RISCVDAGToDAGISel::hasAllNBitUsers(), llvm::SITargetLowering::hasMemSDNodeUser(), hasNonFlagsUse(), isCompatibleReplacement(), and llvm::propagatesPoison().

getUser()

User * llvm::Use::getUser ( ) const

inline

Returns the User that contains this Use.

For an instruction operand, for example, this will return the instruction.

Definition at line 72 of file Use.h.

Referenced by allUsesTruncate(), CombineBaseUpdate(), combineOp_VLToVWOp_VL(), CombineVLDDUP(), combineVSelectToBLENDV(), llvm::MemorySSA::dominates(), eliminateSwiftErrorAlloca(), ExtendUsesToFormExtLoad(), getCaseResults(), llvm::RISCVDAGToDAGISel::hasAllNBitUsers(), llvm::SITargetLowering::hasMemSDNodeUser(), hasNonFlagsUse(), isF128MovedToParts(), isI128MovedToParts(), operandWithNewAddressSpaceOrCreatePoison(), OptimizeGlobalAddressOfAllocation(), performMemPairCombine(), PerformMVEVLDCombine(), performNEONPostLDSTCombine(), performPostLD1Combine(), llvm::propagatesPoison(), llvm::SelectionDAG::ReplaceAllUsesOfValuesWith(), replaceAllUsesOfWithIn(), llvm::X86TargetLowering::shouldReduceLoadWidth(), usePartialVectorLoads(), and llvm::Value::Value().

operator Value *()

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

inline

Definition at line 65 of file Use.h.

operator->() [1/2]

Value * llvm::Use::operator-> ( )

inline

Definition at line 79 of file Use.h.

operator->() [2/2]

const Value * llvm::Use::operator-> ( ) const

inline

Definition at line 80 of file Use.h.

operator=() [1/2]

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

inline

Definition at line 897 of file Value.h.

References RHS, and set().

operator=() [2/2]

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

inline

Definition at line 892 of file Value.h.

References RHS, and set().

set()

void llvm::Use::set ( Value *  Val )

inline

Definition at line 886 of file Value.h.

Referenced by llvm::SDNode::DropOperands(), eliminateSwiftErrorAlloca(), llvm::SITargetLowering::emitExpandAtomicAddrSpacePredicate(), llvm::SelectionDAG::MorphNodeTo(), operator=(), OptimizeGlobalAddressOfAllocation(), llvm::SwitchInst::removeCase(), llvm::SelectionDAG::RemoveDeadNodes(), llvm::IndirectBrInst::removeDestination(), llvm::SelectionDAG::ReplaceAllUsesOfValuesWith(), llvm::SelectionDAG::ReplaceAllUsesOfValueWith(), llvm::SelectionDAG::ReplaceAllUsesWith(), and sinkLastInstruction().

swap()

void llvm::Use::swap

(

Use &

RHS

)

Provide a fast substitute to std::swap<Use> that also works with less standard-compliant compilers.

Definition at line 14 of file Use.cpp.

Referenced by Use().

zap()

void llvm::Use::zap ( Use *  Start, const Use *  Stop, bool  del = false  )

static

Destroys Use operands when the number of operands of a User changes.

Definition at line 35 of file Use.cpp.

Friends And Related Function Documentation

User

friend class User

friend

Definition at line 63 of file Use.h.

Value

friend class Value

friend

Definition at line 62 of file Use.h.

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

• include/llvm/IR/Use.h
• include/llvm/IR/Value.h
• lib/SandboxIR/Use.cpp