#include "llvm/Transforms/IPO/FunctionSpecialization.h"

Inheritance diagram for llvm::InstCostVisitor:

Public Member Functions
	InstCostVisitor (std::function< BlockFrequencyInfo &(Function &)> GetBFI, Function *F, const DataLayout &DL, TargetTransformInfo &TTI, SCCPSolver &Solver)

bool	isBlockExecutable (BasicBlock *BB) const

Cost	getCodeSizeSavingsForArg (Argument A, Constant C)
	Compute the codesize savings for replacing argument `A` with constant `C`.

Cost	getCodeSizeSavingsFromPendingPHIs ()

Cost	getLatencySavingsForKnownConstants ()
	Compute the latency savings from replacing all arguments with constants for a specialization candidate.

Public Member Functions inherited from llvm::InstVisitor< InstCostVisitor, Constant * >
void	visit (Iterator Start, Iterator End)

void	visit (Module &M)

void	visit (Function &F)

void	visit (BasicBlock &BB)

void	visit (Module *M)

void	visit (Function *F)

void	visit (BasicBlock *BB)

Constant *	visit (Instruction *I)

Constant *	visit (Instruction &I)

void	visitModule (Module &M)

void	visitFunction (Function &F)

void	visitBasicBlock (BasicBlock &BB)

Constant *	visitICmpInst (ICmpInst &I)

Constant *	visitFCmpInst (FCmpInst &I)

Constant *	visitAllocaInst (AllocaInst &I)

Constant *	visitLoadInst (LoadInst &I)

Constant *	visitStoreInst (StoreInst &I)

Constant *	visitAtomicCmpXchgInst (AtomicCmpXchgInst &I)

Constant *	visitAtomicRMWInst (AtomicRMWInst &I)

Constant *	visitFenceInst (FenceInst &I)

Constant *	visitGetElementPtrInst (GetElementPtrInst &I)

Constant *	visitPHINode (PHINode &I)

Constant *	visitTruncInst (TruncInst &I)

Constant *	visitZExtInst (ZExtInst &I)

Constant *	visitSExtInst (SExtInst &I)

Constant *	visitFPTruncInst (FPTruncInst &I)

Constant *	visitFPExtInst (FPExtInst &I)

Constant *	visitFPToUIInst (FPToUIInst &I)

Constant *	visitFPToSIInst (FPToSIInst &I)

Constant *	visitUIToFPInst (UIToFPInst &I)

Constant *	visitSIToFPInst (SIToFPInst &I)

Constant *	visitPtrToIntInst (PtrToIntInst &I)

Constant *	visitIntToPtrInst (IntToPtrInst &I)

Constant *	visitBitCastInst (BitCastInst &I)

Constant *	visitAddrSpaceCastInst (AddrSpaceCastInst &I)

Constant *	visitSelectInst (SelectInst &I)

Constant *	visitVAArgInst (VAArgInst &I)

Constant *	visitExtractElementInst (ExtractElementInst &I)

Constant *	visitInsertElementInst (InsertElementInst &I)

Constant *	visitShuffleVectorInst (ShuffleVectorInst &I)

Constant *	visitExtractValueInst (ExtractValueInst &I)

Constant *	visitInsertValueInst (InsertValueInst &I)

Constant *	visitLandingPadInst (LandingPadInst &I)

Constant *	visitFuncletPadInst (FuncletPadInst &I)

Constant *	visitCleanupPadInst (CleanupPadInst &I)

Constant *	visitCatchPadInst (CatchPadInst &I)

Constant *	visitFreezeInst (FreezeInst &I)

Constant *	visitDbgDeclareInst (DbgDeclareInst &I)

Constant *	visitDbgValueInst (DbgValueInst &I)

Constant *	visitDbgVariableIntrinsic (DbgVariableIntrinsic &I)

Constant *	visitDbgLabelInst (DbgLabelInst &I)

Constant *	visitDbgInfoIntrinsic (DbgInfoIntrinsic &I)

Constant *	visitMemSetInst (MemSetInst &I)

Constant *	visitMemSetInlineInst (MemSetInlineInst &I)

Constant *	visitMemSetPatternInst (MemSetPatternInst &I)

Constant *	visitMemCpyInst (MemCpyInst &I)

Constant *	visitMemCpyInlineInst (MemCpyInlineInst &I)

Constant *	visitMemMoveInst (MemMoveInst &I)

Constant *	visitMemTransferInst (MemTransferInst &I)

Constant *	visitMemIntrinsic (MemIntrinsic &I)

Constant *	visitVAStartInst (VAStartInst &I)

Constant *	visitVAEndInst (VAEndInst &I)

Constant *	visitVACopyInst (VACopyInst &I)

Constant *	visitIntrinsicInst (IntrinsicInst &I)

Constant *	visitCallInst (CallInst &I)

Constant *	visitInvokeInst (InvokeInst &I)

Constant *	visitCallBrInst (CallBrInst &I)

Constant *	visitReturnInst (ReturnInst &I)

Constant *	visitBranchInst (BranchInst &I)

Constant *	visitSwitchInst (SwitchInst &I)

Constant *	visitIndirectBrInst (IndirectBrInst &I)

Constant *	visitResumeInst (ResumeInst &I)

Constant *	visitUnreachableInst (UnreachableInst &I)

Constant *	visitCleanupReturnInst (CleanupReturnInst &I)

Constant *	visitCatchReturnInst (CatchReturnInst &I)

Constant *	visitCatchSwitchInst (CatchSwitchInst &I)

Constant *	visitTerminator (Instruction &I)

Constant *	visitCastInst (CastInst &I)

Constant *	visitUnaryOperator (UnaryOperator &I)

Constant *	visitBinaryOperator (BinaryOperator &I)

Constant *	visitCmpInst (CmpInst &I)

Constant *	visitUnaryInstruction (UnaryInstruction &I)

Constant *	visitCallBase (CallBase &I)

void	visitInstruction (Instruction &I)

Friends
class	InstVisitor< InstCostVisitor, Constant * >

Detailed Description

Definition at line 153 of file FunctionSpecialization.h.

Constructor & Destructor Documentation

◆ InstCostVisitor()

llvm::InstCostVisitor::InstCostVisitor	(	std::function< BlockFrequencyInfo &(Function &)>	GetBFI,
		Function *	F,
		const DataLayout &	DL,
		TargetTransformInfo &	TTI,
		SCCPSolver &	Solver
	)

inline

Definition at line 174 of file FunctionSpecialization.h.

References DL, and F.

Member Function Documentation

◆ getCodeSizeSavingsForArg()

Cost InstCostVisitor::getCodeSizeSavingsForArg	(	Argument *	A,
		Constant *	C
	)

Compute the codesize savings for replacing argument A with constant C.

Definition at line 163 of file FunctionSpecialization.cpp.

References A, llvm::CallingConv::C, llvm::dbgs(), isBlockExecutable(), and LLVM_DEBUG.

◆ getCodeSizeSavingsFromPendingPHIs()

Cost InstCostVisitor::getCodeSizeSavingsFromPendingPHIs ( )

Definition at line 151 of file FunctionSpecialization.cpp.

References isBlockExecutable().

◆ getLatencySavingsForKnownConstants()

Cost InstCostVisitor::getLatencySavingsForKnownConstants ( )

Compute the latency savings from replacing all arguments with constants for a specialization candidate.

As this function computes the latency savings for all Instructions in KnownConstants at once, it should be called only after every instruction has been visited, i.e. after: