#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
LLVM_ABI Cost	getCodeSizeSavingsForArg (Argument A, Constant C)
	Compute the codesize savings for replacing argument `A` with constant `C`.
LLVM_ABI Cost	getCodeSizeSavingsFromPendingPHIs ()
LLVM_ABI 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	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 *	visitPtrToAddrInst (PtrToAddrInst &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 *	visitMemSetInst (MemSetInst &I)
Constant *	visitMemSetPatternInst (MemSetPatternInst &I)
Constant *	visitMemCpyInst (MemCpyInst &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.

Referenced by InstVisitor< InstCostVisitor, Constant * >.

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 164 of file FunctionSpecialization.cpp.

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

◆ getCodeSizeSavingsFromPendingPHIs()

Cost InstCostVisitor::getCodeSizeSavingsFromPendingPHIs ( )

Definition at line 152 of file FunctionSpecialization.cpp.

References CodeSize, and 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: