llvm::VPCostContext Struct Reference

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)
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.
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)
	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

Detailed Description

Struct to hold various analysis needed for cost computations.

Definition at line 344 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 )

inline

Definition at line 353 of file VPlanHelpers.h.

References CM, CostKind, LLVMCtx, 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 6711 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 1774 of file VPlan.cpp.

References llvm::TargetTransformInfo::getOperandInfo().

getScalarizationOverhead()

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

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.

Definition at line 1781 of file VPlan.cpp.

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

isLegacyUniformAfterVectorization()

bool VPCostContext::isLegacyUniformAfterVectorization	(	Instruction *	I,
		ElementCount	VF ) const

Return true if I is considered uniform-after-vectorization in the legacy cost model for VF.

Only used to check for additional VPlan simplifications.

Definition at line 6719 of file LoopVectorize.cpp.

References CM, and I.

Referenced by planContainsAdditionalSimplifications().

skipCostComputation()

bool VPCostContext::skipCostComputation	(	Instruction *	UI,
		bool	IsVector ) const

Return true if the cost for UI shouldn't be computed, e.g.

because it has already been pre-computed.

Definition at line 6724 of file LoopVectorize.cpp.

References CM, and SkipCostComputation.

Member Data Documentation

CM

LoopVectorizationCostModel& llvm::VPCostContext::CM

Definition at line 349 of file VPlanHelpers.h.

Referenced by getLegacyCost(), isLegacyUniformAfterVectorization(), skipCostComputation(), and VPCostContext().

CostKind

TargetTransformInfo::TargetCostKind llvm::VPCostContext::CostKind

Definition at line 351 of file VPlanHelpers.h.

Referenced by getScalarizationOverhead(), and VPCostContext().

LLVMCtx

LLVMContext& llvm::VPCostContext::LLVMCtx

Definition at line 348 of file VPlanHelpers.h.

Referenced by VPCostContext().

SkipCostComputation

SmallPtrSet<Instruction *, 8> llvm::VPCostContext::SkipCostComputation

Definition at line 350 of file VPlanHelpers.h.

Referenced by skipCostComputation().

TLI

const TargetLibraryInfo& llvm::VPCostContext::TLI

Definition at line 346 of file VPlanHelpers.h.

Referenced by VPCostContext().

TTI

const TargetTransformInfo& llvm::VPCostContext::TTI

Definition at line 345 of file VPlanHelpers.h.

Referenced by getScalarizationOverhead(), and VPCostContext().

Types

VPTypeAnalysis llvm::VPCostContext::Types

Definition at line 347 of file VPlanHelpers.h.

Referenced by getScalarizationOverhead(), and VPCostContext().

---

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

• lib/Transforms/Vectorize/VPlanHelpers.h
• lib/Transforms/Vectorize/LoopVectorize.cpp
• lib/Transforms/Vectorize/VPlan.cpp