llvm::ElementCount Class Reference

#include "llvm/Support/TypeSize.h"

Inheritance diagram for llvm::ElementCount:

Public Member Functions
constexpr	ElementCount ()
constexpr bool	isScalar () const
	Exactly one element.
constexpr bool	isVector () const
	One or more elements.
Public Member Functions inherited from llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >
constexpr bool	operator== (const FixedOrScalableQuantity &RHS) const
constexpr bool	operator!= (const FixedOrScalableQuantity &RHS) const
constexpr bool	isZero () const
constexpr bool	isNonZero () const
	operator bool () const
constexpr ElementCount	getWithIncrement (ScalarTy RHS) const
	Add RHS to the underlying quantity.
constexpr ScalarTy	getKnownMinValue () const
	Returns the minimum value this quantity can represent.
constexpr bool	isScalable () const
	Returns whether the quantity is scaled by a runtime quantity (vscale).
constexpr bool	isKnownEven () const
	A return value of true indicates we know at compile time that the number of elements (vscale * Min) is definitely even.
constexpr bool	isKnownMultipleOf (ScalarTy RHS) const
	This function tells the caller whether the element count is known at compile time to be a multiple of the scalar value RHS.
constexpr ScalarTy	getFixedValue () const
constexpr ElementCount	divideCoefficientBy (ScalarTy RHS) const
	We do not provide the '/' operator here because division for polynomial types does not work in the same way as for normal integer types.
constexpr ElementCount	multiplyCoefficientBy (ScalarTy RHS) const
constexpr ElementCount	coefficientNextPowerOf2 () const
constexpr bool	hasKnownScalarFactor (const FixedOrScalableQuantity &RHS) const
	Returns true if there exists a value X where RHS.multiplyCoefficientBy(X) will result in a value whose quantity matches our own.
constexpr ScalarTy	getKnownScalarFactor (const FixedOrScalableQuantity &RHS) const
	Returns a value X where RHS.multiplyCoefficientBy(X) will result in a value whose quantity matches our own.
void	print (raw_ostream &OS) const
	Printing function.

Static Public Member Functions
static constexpr ElementCount	getFixed (ScalarTy MinVal)
static constexpr ElementCount	getScalable (ScalarTy MinVal)
static constexpr ElementCount	get (ScalarTy MinVal, bool Scalable)
Static Public Member Functions inherited from llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >
static constexpr bool	isKnownLT (const FixedOrScalableQuantity &LHS, const FixedOrScalableQuantity &RHS)
static constexpr bool	isKnownGT (const FixedOrScalableQuantity &LHS, const FixedOrScalableQuantity &RHS)
static constexpr bool	isKnownLE (const FixedOrScalableQuantity &LHS, const FixedOrScalableQuantity &RHS)
static constexpr bool	isKnownGE (const FixedOrScalableQuantity &LHS, const FixedOrScalableQuantity &RHS)

Additional Inherited Members
Public Types inherited from llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >
using	ScalarTy = unsigned
Protected Member Functions inherited from llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >
constexpr	FixedOrScalableQuantity ()=default
constexpr	FixedOrScalableQuantity (ScalarTy Quantity, bool Scalable)
Protected Attributes inherited from llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >
ScalarTy	Quantity
bool	Scalable

Detailed Description

Definition at line 279 of file TypeSize.h.

Constructor & Destructor Documentation

ElementCount()

constexpr llvm::ElementCount::ElementCount ( )

inlineconstexpr

Definition at line 289 of file TypeSize.h.

Referenced by get(), getFixed(), and getScalable().

Member Function Documentation

get()

static constexpr ElementCount llvm::ElementCount::get ( ScalarTy  MinVal, bool  Scalable  )

inlinestaticconstexpr

Definition at line 297 of file TypeSize.h.

References ElementCount(), and llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >::Scalable.

Referenced by llvm::ConstantFoldShuffleVectorInstruction(), llvm::VectorType::get(), llvm::LLT::getElementCount(), llvm::VectorType::getElementCount(), llvm::TargetTransformInfoImplBase::getMinimumVF(), llvm::getOptionalElementCountLoopAttribute(), llvm::MVT::getPow2VectorType(), llvm::EVT::getPow2VectorType(), llvm::Intrinsic::IITDescriptor::getVector(), llvm::MVT::getVectorElementCount(), llvm::LoopVectorizeHints::getWidth(), and llvm::VFABI::tryDemangleForVFABI().

getFixed()

static constexpr ElementCount llvm::ElementCount::getFixed ( ScalarTy  MinVal )

inlinestaticconstexpr

Definition at line 291 of file TypeSize.h.

References ElementCount().

Referenced by addMappingsFromTLI(), applyDupLane(), areRuntimeChecksProfitable(), llvm::LegalizerHelper::bitcastExtractVectorElt(), bitcastToVectorElement32(), llvm::LoopVectorizationCostModel::calculateRegisterUsage(), llvm::CastInst::castIsValid(), llvm::LegalizeMutations::changeElementCountTo(), llvm::LegalizeRuleSet::clampMaxNumElements(), llvm::IRBuilderBase::CreateVectorSplat(), llvm::VectorizationFactor::Disabled(), fewerEltsToSize64Vector(), llvm::LLT::fixed_vector(), llvm::slpvectorizer::BoUpSLP::ShuffleCostEstimator::gather(), llvm::FixedVectorType::get(), getBitcastRegisterType(), getCopyToPartsVector(), llvm::getCoverTy(), llvm::ConstantAggregateZero::getElementCount(), llvm::getGCDType(), llvm::ConstantExpr::getGetElementPtr(), llvm::BasicTTIImplBase< T >::getIntrinsicInstrCost(), llvm::HexagonTTIImpl::getMinimumVF(), getNarrowTypeBreakDown(), getPow2VectorType(), llvm::ConstantDataVector::getRaw(), llvm::VFShape::getScalarShape(), llvm::slpvectorizer::BoUpSLP::LookAheadHeuristics::getShallowScore(), llvm::AArch64TTIImpl::getShuffleCost(), llvm::ConstantDataVector::getSplat(), llvm::DenseMapInfo< ElementCount, void >::getTombstoneKey(), getVectorCallCosts(), llvm::TargetLoweringBase::getVectorTypeBreakdown(), getVectorTypeBreakdownMVT(), llvm::TargetLibraryInfoImpl::getWidestVF(), llvm::isTLIScalarize(), llvm::AMDGPULegalizerInfo::legalizeImageIntrinsic(), llvm::LLT::LLT(), llvm::LoopVectorizeHints::LoopVectorizeHints(), mutationIsSane(), numVectorEltsOrZero(), llvm::VPlanTransforms::optimizeInductions(), performVSelectCombine(), llvm::LoopVectorizationPlanner::plan(), llvm::LoopVectorizationPlanner::planInVPlanNativePath(), llvm::LLT::pointer(), replaceWithCallToVeclib(), llvm::LoopVectorizePass::runImpl(), llvm::LLT::scalar(), llvm::LoopVectorizationPlanner::selectEpilogueVectorizationFactor(), llvm::LoopVectorizationCostModel::setCostBasedWideningDecision(), llvm::VectorBuilder::setStaticVL(), splitUnequalType(), llvm::ToVectorTy(), llvm::LegalizationArtifactCombiner::tryFoldUnmergeCast(), llvm::LoopVectorizeHints::vectorizeAnalysisPassName(), and widenToNextPowerOf2().

getScalable()

static constexpr ElementCount llvm::ElementCount::getScalable ( ScalarTy  MinVal )

inlinestaticconstexpr

Definition at line 294 of file TypeSize.h.

References ElementCount().

Referenced by addMappingsFromTLI(), llvm::ScalableVectorType::get(), llvm::DenseMapInfo< ElementCount, void >::getEmptyKey(), llvm::AArch64TTIImpl::getGatherScatterOpCost(), llvm::AArch64TTIImpl::getMaskedMemoryOpCost(), llvm::AArch64TTIImpl::getMemoryOpCost(), llvm::AArch64TTIImpl::getSpliceCost(), llvm::TargetLoweringBase::getTypeConversion(), llvm::TargetLibraryInfoImpl::getWidestVF(), llvm::isTLIScalarize(), LowerSVEIntrinsicEXT(), performIntrinsicCombine(), llvm::LoopVectorizationPlanner::plan(), and llvm::LLT::scalable_vector().

isScalar()

constexpr bool llvm::ElementCount::isScalar ( ) const

inlineconstexpr

Exactly one element.

Definition at line 302 of file TypeSize.h.

References llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >::getKnownMinValue(), and llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >::isScalable().

Referenced by areRuntimeChecksProfitable(), llvm::LoopVectorizationCostModel::collectInstsToScalarize(), llvm::LoopVectorizationCostModel::collectUniformsAndScalars(), llvm::VPWidenGEPRecipe::execute(), llvm::VPFirstOrderRecurrencePHIRecipe::execute(), llvm::VPReductionPHIRecipe::execute(), llvm::VPWidenCanonicalIVRecipe::execute(), llvm::LoopVectorizationCostModel::expectedCost(), llvm::VPTransformState::get(), getCopyToPartsVector(), llvm::BasicTTIImplBase< T >::getIntrinsicInstrCost(), llvm::GCNTTIImpl::getMaxInterleaveFactor(), llvm::R600TTIImpl::getMaxInterleaveFactor(), llvm::RISCVTTIImpl::getMaxInterleaveFactor(), llvm::X86TTIImpl::getMaxInterleaveFactor(), llvm::TargetLoweringBase::getPreferredVectorAction(), llvm::TargetLoweringBase::getTypeConversion(), llvm::LoopVectorizationCostModel::getVectorCallCost(), llvm::TargetLoweringBase::getVectorTypeBreakdown(), llvm::LoopVectorizationCostModel::isScalarAfterVectorization(), llvm::LoopVectorizationCostModel::isUniformAfterVectorization(), MaybeVectorizeType(), llvm::LoopVectorizationPlanner::plan(), llvm::LoopVectorizationPlanner::planInVPlanNativePath(), llvm::VPlan::prepareToExecute(), llvm::LoopVectorizePass::processLoop(), llvm::LoopVectorizationCostModel::selectInterleaveCount(), llvm::LoopVectorizationCostModel::setCostBasedWideningDecision(), and llvm::VPRecipeBuilder::tryToCreateWidenRecipe().

isVector()

constexpr bool llvm::ElementCount::isVector ( ) const

inlineconstexpr

One or more elements.

Definition at line 306 of file TypeSize.h.

References llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >::getKnownMinValue(), and llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >::isScalable().

Referenced by llvm::LoopVectorizationCostModel::calculateRegisterUsage(), llvm::LoopVectorizationCostModel::canTruncateToMinimalBitwidth(), llvm::VPWidenCastRecipe::execute(), llvm::VPWidenCallRecipe::execute(), llvm::VPWidenGEPRecipe::execute(), llvm::VPWidenIntOrFpInductionRecipe::execute(), llvm::VPFirstOrderRecurrencePHIRecipe::execute(), llvm::VPReductionRecipe::execute(), llvm::VPReplicateRecipe::execute(), llvm::VPWidenCanonicalIVRecipe::execute(), llvm::LoopVectorizationCostModel::expectedCost(), llvm::InnerLoopVectorizer::fixFixedOrderRecurrence(), llvm::InnerLoopVectorizer::fixReduction(), llvm::InnerLoopVectorizer::fixVectorizedLoop(), llvm::BasicTTIImplBase< T >::getIntrinsicInstrCost(), getStepVector(), llvm::LoopVectorizationCostModel::getWideningCost(), llvm::LoopVectorizationCostModel::getWideningDecision(), llvm::FixedScalableVFPair::hasVector(), llvm::LoopVectorizationCostModel::isLegalGatherOrScatter(), llvm::LoopVectorizationCostModel::isProfitableToScalarize(), llvm::LoopVectorizationCostModel::isScalarWithPredication(), llvm::LoopVectorizationPlanner::plan(), llvm::LoopVectorizePass::processLoop(), llvm::LoopVectorizationCostModel::requiresScalarEpilogue(), llvm::LoopVectorizationCostModel::selectInterleaveCount(), and llvm::LoopVectorizationCostModel::setWideningDecision().

---

The documentation for this class was generated from the following file:

• include/llvm/Support/TypeSize.h