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
LLVM_ABI 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.
LLVM_ABI void	set (Value *Val)
LLVM_ABI Value *	operator= (Value *RHS)
LLVM_ABI const Use &	operator= (const Use &RHS)
Value *	operator-> ()
const Value *	operator-> () const
Use *	getNext () const
LLVM_ABI unsigned	getOperandNo () const
	Return the operand # of this use in its User.

Static Public Member Functions
static LLVM_ABI 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 35 of file Use.h.

Constructor & Destructor Documentation

Use()

llvm::Use::Use ( const Use & U )

delete

References LLVM_ABI, RHS, and Use().

Referenced by getNext(), operator=(), and Use().

Member Function Documentation

get()

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

inline

Definition at line 55 of file Use.h.

References Value.

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

getNext()

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

inline

Definition at line 71 of file Use.h.

References Use().

getOperandNo()

unsigned llvm::Use::getOperandNo

(

)

const

Return the operand # of this use in its User.

Definition at line 35 of file Use.cpp.

Referenced by allUsesTruncate(), CombineBaseUpdate(), combineOp_VLToVWOp_VL(), combineVSelectToBLENDV(), dominatesAllUsesOf(), llvm::InstCombinerImpl::foldShuffledIntrinsicOperands(), ShapeCalculator::getShape(), llvm::RISCVDAGToDAGISel::hasAllNBitUsers(), llvm::SITargetLowering::hasMemSDNodeUser(), hasNonFlagsUse(), 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 61 of file Use.h.

References User.

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

operator Value *()

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

inline

Definition at line 54 of file Use.h.

References Value.

operator->() [1/2]

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

inline

Definition at line 68 of file Use.h.

References Value.

operator->() [2/2]

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

inline

Definition at line 69 of file Use.h.

References Value.

operator=() [1/2]

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

inline

Definition at line 917 of file Value.h.

References RHS, set(), and Use().

operator=() [2/2]

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

inline

Definition at line 912 of file Value.h.

References RHS, set(), and Value.

set()

void llvm::Use::set ( Value * Val )

inline

Definition at line 905 of file Value.h.

References Value.

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

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 39 of file Use.cpp.

Friends And Related Symbol Documentation

User

friend class User

friend

Definition at line 52 of file Use.h.

References User.

Referenced by getUser(), and User.

Value

friend class Value

friend

Definition at line 51 of file Use.h.

References Value.

Referenced by get(), operator Value *(), operator->(), operator->(), operator=(), set(), and Value.

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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