VPlan models a candidate for vectorization, encoding various decisions take to produce efficient output IR, including which branches, basic-blocks and output IR instructions to generate, and their cost. More...

#include "Transforms/Vectorize/VPlan.h"

Public Member Functions
	VPlan (VPBlockBase *Entry=nullptr)

	~VPlan ()

void	prepareToExecute (Value TripCount, Value VectorTripCount, Value *CanonicalIVStartValue, VPTransformState &State, bool IsEpilogueVectorization)
	Prepare the plan for execution, setting up the required live-in values.

void	execute (VPTransformState *State)
	Generate the IR code for this VPlan.

VPBlockBase *	getEntry ()

const VPBlockBase *	getEntry () const

VPBlockBase *	setEntry (VPBlockBase *Block)

VPValue *	getOrCreateTripCount ()
	The trip count of the original loop.

VPValue *	getOrCreateBackedgeTakenCount ()
	The backedge taken count of the original loop.

VPValue &	getVectorTripCount ()
	The vector trip count.

void	disableValue2VPValue ()
	Mark the plan to indicate that using Value2VPValue is not safe any longer, because it may be stale.

void	addVF (ElementCount VF)

void	setVF (ElementCount VF)

bool	hasVF (ElementCount VF)

bool	hasScalarVFOnly () const

bool	hasUF (unsigned UF) const

void	setUF (unsigned UF)

std::string	getName () const
	Return a string with the name of the plan and the applicable VFs and UFs.

void	setName (const Twine &newName)

VPValue *	getOrAddExternalDef (Value *V)
	Get the existing or add a new external definition for `V`.

void	addVPValue (Value *V)

void	addVPValue (Value V, VPValue VPV)

VPValue *	getVPValue (Value *V, bool OverrideAllowed=false)
	Returns the VPValue for `V`.

VPValue *	getOrAddVPValue (Value *V, bool OverrideAllowed=false)
	Gets the VPValue or adds a new one (if none exists yet) for `V`.

void	removeVPValueFor (Value *V)

void	print (raw_ostream &O) const
	Print this VPlan to `O`.

void	printDOT (raw_ostream &O) const
	Print this VPlan in DOT format to `O`.

LLVM_DUMP_METHOD void	dump () const
	Dump the plan to stderr (for debugging).

iterator_range< mapped_iterator< Use , std::function< VPValue (Value *)> > >	mapToVPValues (User::op_range Operands)
	Returns a range mapping the values the range `Operands` to their corresponding VPValues.

VPRegionBlock *	getVectorLoopRegion ()
	Returns the VPRegionBlock of the vector loop.

const VPRegionBlock *	getVectorLoopRegion () const

VPCanonicalIVPHIRecipe *	getCanonicalIV ()
	Returns the canonical induction recipe of the vector loop.

VPActiveLaneMaskPHIRecipe *	getActiveLaneMaskPhi ()
	Find and return the VPActiveLaneMaskPHIRecipe from the header - there be only one at most.

void	addLiveOut (PHINode PN, VPValue V)

void	clearLiveOuts ()

void	removeLiveOut (PHINode *PN)

const MapVector< PHINode , VPLiveOut > &	getLiveOuts () const

Friends
class	VPlanPrinter

class	VPSlotTracker

Detailed Description

VPlan models a candidate for vectorization, encoding various decisions take to produce efficient output IR, including which branches, basic-blocks and output IR instructions to generate, and their cost.

VPlan holds a Hierarchical-CFG of VPBasicBlocks and VPRegionBlocks rooted at an Entry VPBlock.

Definition at line 2160 of file VPlan.h.

Constructor & Destructor Documentation

◆ VPlan()

llvm::VPlan::VPlan ( VPBlockBase * Entry = nullptr )

inline

Definition at line 2208 of file VPlan.h.

◆ ~VPlan()

VPlan::~VPlan ( )

Definition at line 579 of file VPlan.cpp.

References llvm::Block, llvm::VPBlockBase::deleteCFG(), P, and llvm::vp_depth_first_shallow().

Member Function Documentation

◆ addLiveOut()

void VPlan::addLiveOut	(	PHINode *	PN,
		VPValue *	V
	)

Definition at line 811 of file VPlan.cpp.

References assert().

Referenced by addUsersInExitBlock().

◆ addVF()

void llvm::VPlan::addVF ( ElementCount VF )

inline

Definition at line 2253 of file VPlan.h.

References llvm::SetVector< T, Vector, Set >::insert().

◆ addVPValue() [1/2]

void llvm::VPlan::addVPValue ( Value * V )

inline

Definition at line 2286 of file VPlan.h.

References assert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by getOrAddVPValue().

◆ addVPValue() [2/2]

void llvm::VPlan::addVPValue	(	Value *	V,
		VPValue *	VPV
	)

inline

Definition at line 2296 of file VPlan.h.

References assert(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count().

◆ clearLiveOuts()

void llvm::VPlan::clearLiveOuts ( )

inline

Definition at line 2376 of file VPlan.h.

Referenced by llvm::InnerLoopVectorizer::fixVectorizedLoop().

◆ disableValue2VPValue()

void llvm::VPlan::disableValue2VPValue ( )

inline

Mark the plan to indicate that using Value2VPValue is not safe any longer, because it may be stale.

Definition at line 2251 of file VPlan.h.

◆ dump()

LLVM_DUMP_METHOD void VPlan::dump ( ) const

Dump the plan to stderr (for debugging).

Definition at line 808 of file VPlan.cpp.

References llvm::dbgs(), and llvm::print().

◆ execute()

void VPlan::execute ( VPTransformState * State )

Generate the IR code for this VPlan.

Generate the code inside the preheader and body of the vectorized loop.

Assumes a single pre-header basic-block was created for this. Introduce additional basic-blocks as needed, and fill them all.

Definition at line 662 of file VPlan.cpp.

Referenced by llvm::LoopVectorizationPlanner::executePlan().

◆ getActiveLaneMaskPhi()

VPActiveLaneMaskPHIRecipe * VPlan::getActiveLaneMaskPhi ( )

Find and return the VPActiveLaneMaskPHIRecipe from the header - there be only one at most.

If there isn't one, then return nullptr.

Definition at line 599 of file VPlan.cpp.

◆ getCanonicalIV()

VPCanonicalIVPHIRecipe * llvm::VPlan::getCanonicalIV ( )

inline

Returns the canonical induction recipe of the vector loop.

Definition at line 2361 of file VPlan.h.

References llvm::VPBasicBlock::begin(), llvm::VPBasicBlock::empty(), llvm::VPBlockBase::getEntryBasicBlock(), llvm::VPBlockBase::getSingleSuccessor(), and getVectorLoopRegion().

Referenced by llvm::VPlanTransforms::optimizeForVFAndUF(), llvm::VPlanTransforms::optimizeInductions(), and llvm::VPlanTransforms::removeRedundantCanonicalIVs().

◆ getEntry() [1/2]

VPBlockBase * llvm::VPlan::getEntry ( )

inline

Definition at line 2223 of file VPlan.h.

Referenced by addCanonicalIVRecipes(), llvm::InnerLoopVectorizer::collectPoisonGeneratingRecipes(), llvm::VPlanPrinter::dump(), llvm::InnerLoopVectorizer::fixNonInductionPHIs(), llvm::DomTreeNodeTraits< VPBlockBase >::getEntryNode(), llvm::vputils::getOrCreateVPValueForSCEVExpr(), getVectorLoopRegion(), llvm::VPlanTransforms::mergeBlocksIntoPredecessors(), llvm::VPlanTransforms::mergeReplicateRegionsIntoSuccessors(), llvm::VPlanTransforms::removeDeadRecipes(), llvm::VPlanTransforms::removeRedundantExpandSCEVRecipes(), llvm::VPBlockBase::setPlan(), llvm::VPlanTransforms::sinkScalarOperands(), and llvm::VPlanVerifier::verifyPlanIsValid().

◆ getEntry() [2/2]

const VPBlockBase * llvm::VPlan::getEntry ( ) const

inline

Definition at line 2224 of file VPlan.h.

◆ getLiveOuts()

const MapVector< PHINode *, VPLiveOut * > & llvm::VPlan::getLiveOuts ( ) const

inline

Definition at line 2387 of file VPlan.h.

Referenced by llvm::InnerLoopVectorizer::fixVectorizedLoop(), and llvm::VPlanVerifier::verifyPlanIsValid().

◆ getName()

std::string VPlan::getName ( ) const

Return a string with the name of the plan and the applicable VFs and UFs.

Definition at line 778 of file VPlan.cpp.

References llvm::drop_begin(), Name, llvm::VPTransformState::UF, and llvm::VPTransformState::VF.

Referenced by llvm::VPlanPrinter::dump().

◆ getOrAddExternalDef()

VPValue * llvm::VPlan::getOrAddExternalDef ( Value * V )

inline

Get the existing or add a new external definition for V.

Definition at line 2279 of file VPlan.h.

References I, and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert().

Referenced by llvm::vputils::getOrCreateVPValueForSCEVExpr(), llvm::VPlanTransforms::optimizeForVFAndUF(), and llvm::LoopVectorizePass::processLoop().

◆ getOrAddVPValue()

VPValue * llvm::VPlan::getOrAddVPValue	(	Value *	V,
		bool	OverrideAllowed = `false`
	)

inline

Gets the VPValue or adds a new one (if none exists yet) for V.

OverrideAllowed can be used to disable checking whether it is safe to query VPValues using IR Values.

Definition at line 2316 of file VPlan.h.

References addVPValue(), assert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count(), and getVPValue().

Referenced by addCanonicalIVRecipes(), addUsersInExitBlock(), and mapToVPValues().

◆ getOrCreateBackedgeTakenCount()

VPValue * llvm::VPlan::getOrCreateBackedgeTakenCount ( )

inline

The backedge taken count of the original loop.

Definition at line 2240 of file VPlan.h.

◆ getOrCreateTripCount()

VPValue * llvm::VPlan::getOrCreateTripCount ( )

inline

The trip count of the original loop.

Definition at line 2233 of file VPlan.h.

Referenced by addCanonicalIVRecipes().

◆ getVectorLoopRegion() [1/2]

VPRegionBlock * llvm::VPlan::getVectorLoopRegion ( )

inline

Returns the VPRegionBlock of the vector loop.

Definition at line 2353 of file VPlan.h.

References getEntry().

Referenced by addCanonicalIVRecipes(), llvm::VPlanHCFGBuilder::buildHierarchicalCFG(), llvm::LoopVectorizationPlanner::executePlan(), llvm::InnerLoopVectorizer::fixCrossIterationPHIs(), llvm::InnerLoopVectorizer::fixVectorizedLoop(), getCanonicalIV(), llvm::VPlanTransforms::optimizeForVFAndUF(), llvm::VPlanTransforms::optimizeInductions(), llvm::LoopVectorizePass::processLoop(), llvm::VPlanTransforms::removeRedundantCanonicalIVs(), llvm::VPlanTransforms::removeRedundantInductionCasts(), llvm::VPlanVerifier::verifyPlanIsValid(), and llvm::VPInterleavedAccessInfo::VPInterleavedAccessInfo().

◆ getVectorLoopRegion() [2/2]

const VPRegionBlock * llvm::VPlan::getVectorLoopRegion ( ) const

inline

Definition at line 2356 of file VPlan.h.

References getEntry().

◆ getVectorTripCount()

VPValue & llvm::VPlan::getVectorTripCount ( )

inline

The vector trip count.

Definition at line 2247 of file VPlan.h.

Referenced by addCanonicalIVRecipes().

◆ getVPValue()

VPValue * llvm::VPlan::getVPValue	(	Value *	V,
		bool	OverrideAllowed = `false`
	)

inline

Returns the VPValue for V.

OverrideAllowed can be used to disable checking whether it is safe to query VPValues using IR Values.

Definition at line 2305 of file VPlan.h.

References assert(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count().

Referenced by getOrAddVPValue(), and llvm::InnerLoopVectorizer::truncateToMinimalBitwidths().

◆ hasScalarVFOnly()

bool llvm::VPlan::hasScalarVFOnly ( ) const

inline

Definition at line 2263 of file VPlan.h.

References llvm::SetVector< T, Vector, Set >::size().

Referenced by llvm::VPlanTransforms::sinkScalarOperands().

◆ hasUF()

bool llvm::VPlan::hasUF ( unsigned UF ) const

inline

Definition at line 2265 of file VPlan.h.

References llvm::SetVector< T, Vector, Set >::contains(), and llvm::SetVector< T, Vector, Set >::empty().

Referenced by llvm::LoopVectorizationPlanner::executePlan(), llvm::VPlanTransforms::optimizeForVFAndUF(), and setUF().

◆ hasVF()

bool llvm::VPlan::hasVF ( ElementCount VF )

inline

Definition at line 2261 of file VPlan.h.

References llvm::SetVector< T, Vector, Set >::count().

Referenced by llvm::LoopVectorizationPlanner::executePlan(), llvm::VPlanTransforms::optimizeForVFAndUF(), llvm::VPlanTransforms::optimizeInductions(), and setVF().

◆ mapToVPValues()

iterator_range< mapped_iterator< Use *, std::function< VPValue *(Value *)> > > llvm::VPlan::mapToVPValues ( User::op_range Operands )

inline

Returns a range mapping the values the range Operands to their corresponding VPValues.

Definition at line 2345 of file VPlan.h.

References getOrAddVPValue(), llvm::map_range(), and Operands.

◆ prepareToExecute()

void VPlan::prepareToExecute	(	Value *	TripCount,
		Value *	VectorTripCount,
		Value *	CanonicalIVStartValue,
		VPTransformState &	State,
		bool	IsEpilogueVectorization
	)

Prepare the plan for execution, setting up the required live-in values.

Definition at line 608 of file VPlan.cpp.

References llvm::all_of(), assert(), llvm::VPTransformState::Builder, llvm::VPTransformState::CFG, llvm::IRBuilderBase::CreateSub(), llvm::IRBuilderBase::CreateVectorSplat(), llvm::ConstantInt::get(), llvm::BasicBlock::getTerminator(), llvm::Value::getType(), llvm::ElementCount::isScalar(), IV, llvm::VPTransformState::CFGState::PrevBB, llvm::VPTransformState::set(), llvm::VPTransformState::UF, and llvm::VPTransformState::VF.

Referenced by llvm::LoopVectorizationPlanner::executePlan().

◆ print()

LLVM_DUMP_METHOD void VPlan::print ( raw_ostream & O ) const

Print this VPlan to O.

Definition at line 743 of file VPlan.cpp.

References llvm::Block, getName(), and llvm::vp_depth_first_shallow().

Referenced by llvm::operator<<().

◆ printDOT()

LLVM_DUMP_METHOD void VPlan::printDOT ( raw_ostream & O ) const

Print this VPlan in DOT format to O.

Definition at line 802 of file VPlan.cpp.

References Printer.

◆ removeLiveOut()

void llvm::VPlan::removeLiveOut ( PHINode * PN )

inline

Definition at line 2382 of file VPlan.h.

References llvm::MapVector< KeyT, ValueT, MapType, VectorType >::erase().

Referenced by llvm::InnerLoopVectorizer::fixFixedOrderRecurrence(), llvm::InnerLoopVectorizer::fixReduction(), and llvm::InnerLoopVectorizer::fixupIVUsers().

◆ removeVPValueFor()

void llvm::VPlan::removeVPValueFor ( Value * V )

inline

Definition at line 2325 of file VPlan.h.

References assert(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::erase().

◆ setEntry()

VPBlockBase * llvm::VPlan::setEntry ( VPBlockBase * Block )

inline

Definition at line 2226 of file VPlan.h.

References llvm::Block.

Referenced by llvm::VPlanHCFGBuilder::buildHierarchicalCFG().

◆ setName()

void llvm::VPlan::setName ( const Twine & newName )

inline

Definition at line 2276 of file VPlan.h.

References Name, and llvm::Twine::str().

Referenced by llvm::VPlanHCFGBuilder::buildHierarchicalCFG().

◆ setUF()

void llvm::VPlan::setUF ( unsigned UF )

inline

Definition at line 2267 of file VPlan.h.

References assert(), llvm::SetVector< T, Vector, Set >::clear(), hasUF(), and llvm::SetVector< T, Vector, Set >::insert().

Referenced by llvm::VPlanTransforms::optimizeForVFAndUF().

◆ setVF()

void llvm::VPlan::setVF ( ElementCount VF )

inline

Definition at line 2255 of file VPlan.h.

References assert(), llvm::SetVector< T, Vector, Set >::clear(), hasVF(), and llvm::SetVector< T, Vector, Set >::insert().

Referenced by llvm::VPlanTransforms::optimizeForVFAndUF().

Friends And Related Function Documentation

◆ VPlanPrinter

friend class VPlanPrinter

friend

Definition at line 2161 of file VPlan.h.

◆ VPSlotTracker

friend class VPSlotTracker

friend

Definition at line 2162 of file VPlan.h.

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

lib/Transforms/Vectorize/VPlan.h
lib/Transforms/Vectorize/VPlan.cpp

Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ VPlan()

◆ ~VPlan()

Member Function Documentation

◆ addLiveOut()

◆ addVF()

◆ addVPValue() [1/2]

◆ addVPValue() [2/2]

◆ clearLiveOuts()

◆ disableValue2VPValue()

◆ dump()

◆ execute()

◆ getActiveLaneMaskPhi()

◆ getCanonicalIV()

◆ getEntry() [1/2]

◆ getEntry() [2/2]

◆ getLiveOuts()

◆ getName()

◆ getOrAddExternalDef()

◆ getOrAddVPValue()

◆ getOrCreateBackedgeTakenCount()

◆ getOrCreateTripCount()

◆ getVectorLoopRegion() [1/2]

◆ getVectorLoopRegion() [2/2]

◆ getVectorTripCount()

◆ getVPValue()

◆ hasScalarVFOnly()

◆ hasUF()

◆ hasVF()

◆ mapToVPValues()

◆ prepareToExecute()

◆ print()

◆ printDOT()

◆ removeLiveOut()

◆ removeVPValueFor()

◆ setEntry()

◆ setName()

◆ setUF()

◆ setVF()

Friends And Related Function Documentation

◆ VPlanPrinter

◆ VPSlotTracker