Struct to hold various analysis needed for cost computations. More...

#include "Transforms/Vectorize/VPlanHelpers.h"

Public Member Functions
	VPCostContext (const TargetTransformInfo &TTI, const TargetLibraryInfo &TLI, const VPlan &Plan, LoopVectorizationCostModel &CM, TargetTransformInfo::TargetCostKind CostKind, ScalarEvolution &SE, const Loop *L)
InstructionCost	getLegacyCost (Instruction *UI, ElementCount VF) const
	Return the cost for `UI` with `VF` using the legacy cost model as fallback until computing the cost of all recipes migrates to VPlan.
bool	skipCostComputation (Instruction *UI, bool IsVector) const
	Return true if the cost for `UI` shouldn't be computed, e.g.
unsigned	getPredBlockCostDivisor (BasicBlock *BB) const
TargetTransformInfo::OperandValueInfo	getOperandInfo (VPValue *V) const
	Returns the OperandInfo for `V`, if it is a live-in.
bool	isLegacyUniformAfterVectorization (Instruction *I, ElementCount VF) const
	Return true if `I` is considered uniform-after-vectorization in the legacy cost model for `VF`.
InstructionCost	getScalarizationOverhead (Type ResultTy, ArrayRef< const VPValue > Operands, ElementCount VF, bool AlwaysIncludeReplicatingR=false)
	Estimate the overhead of scalarizing a recipe with result type `ResultTy` and `Operands` with `VF`.

Public Attributes
const TargetTransformInfo &	TTI
const TargetLibraryInfo &	TLI
VPTypeAnalysis	Types
LLVMContext &	LLVMCtx
LoopVectorizationCostModel &	CM
SmallPtrSet< Instruction *, 8 >	SkipCostComputation
TargetTransformInfo::TargetCostKind	CostKind
ScalarEvolution &	SE
const Loop *	L

Detailed Description

Struct to hold various analysis needed for cost computations.

Definition at line 329 of file VPlanHelpers.h.

Constructor & Destructor Documentation

◆ VPCostContext()

llvm::VPCostContext::VPCostContext	(	const TargetTransformInfo &	TTI,
		const TargetLibraryInfo &	TLI,
		const VPlan &	Plan,
		LoopVectorizationCostModel &	CM,
		TargetTransformInfo::TargetCostKind	CostKind,
		ScalarEvolution &	SE,
		const Loop *	L )

inline

Definition at line 340 of file VPlanHelpers.h.

References CM, CostKind, L, LLVMCtx, SE, TLI, TTI, and Types.

Member Function Documentation

◆ getLegacyCost()

InstructionCost VPCostContext::getLegacyCost	(	Instruction *	UI,
		ElementCount	VF ) const

Return the cost for UI with VF using the legacy cost model as fallback until computing the cost of all recipes migrates to VPlan.

Definition at line 6776 of file LoopVectorize.cpp.

References CM, llvm::ForceTargetInstructionCost, and InstructionCost.

◆ getOperandInfo()

TargetTransformInfo::OperandValueInfo VPCostContext::getOperandInfo ( VPValue * V ) const

Returns the OperandInfo for V, if it is a live-in.

Definition at line 1729 of file VPlan.cpp.

References llvm::TargetTransformInfo::getOperandInfo().

◆ getPredBlockCostDivisor()

unsigned VPCostContext::getPredBlockCostDivisor ( BasicBlock * BB ) const

Returns: how much the cost of a predicated block should be divided by. Forwards to LoopVectorizationCostModel::getPredBlockCostDivisor.

Definition at line 6795 of file LoopVectorize.cpp.

References CM, and CostKind.

◆ getScalarizationOverhead()

InstructionCost VPCostContext::getScalarizationOverhead	(	Type *	ResultTy,
		ArrayRef< const VPValue * >	Operands,
		ElementCount	VF,
		bool	AlwaysIncludeReplicatingR = false )

Estimate the overhead of scalarizing a recipe with result type ResultTy and Operands with VF.

This is a convenience wrapper for the type-based getScalarizationOverhead API. If AlwaysIncludeReplicatingR is true, always compute the cost of scalarizing replicating operands.

Definition at line 1736 of file VPlan.cpp.

References assert(), llvm::cast(), CostKind, llvm::APInt::getAllOnes(), llvm::getContainedTypes(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getFixedValue(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::isa(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::isScalable(), llvm::ElementCount::isScalar(), llvm::Type::isVoidTy(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::to_vector(), llvm::toVectorizedTy(), TTI, and Types.