llvm::InnerLoopVectorizer Class Reference

InnerLoopVectorizer vectorizes loops which contain only one basic block to a specified vectorization factor (VF). More...

Inheritance diagram for llvm::InnerLoopVectorizer:

Public Types
using	VectorParts = SmallVector< Value *, 2 >
	A type for vectorized values in the new loop.

Public Member Functions
	InnerLoopVectorizer (Loop *OrigLoop, PredicatedScalarEvolution &PSE, LoopInfo *LI, DominatorTree *DT, const TargetLibraryInfo *TLI, const TargetTransformInfo *TTI, AssumptionCache *AC, OptimizationRemarkEmitter *ORE, ElementCount VecWidth, ElementCount MinProfitableTripCount, unsigned UnrollFactor, LoopVectorizationLegality *LVL, LoopVectorizationCostModel *CM, BlockFrequencyInfo *BFI, ProfileSummaryInfo *PSI, GeneratedRTChecks &RTChecks)
virtual	~InnerLoopVectorizer ()=default
virtual std::pair< BasicBlock *, Value * >	createVectorizedLoopSkeleton (const SCEV2ValueTy &ExpandedSCEVs)
	Create a new empty loop that will contain vectorized instructions later on, while the old loop will be used as the scalar remainder.
void	fixVectorizedLoop (VPTransformState &State, VPlan &Plan)
	Fix the vectorized code, taking care of header phi's, live-outs, and more.
bool	areSafetyChecksAdded ()
void	scalarizeInstruction (const Instruction *Instr, VPReplicateRecipe *RepRecipe, const VPIteration &Instance, VPTransformState &State)
	A helper function to scalarize a single Instruction in the innermost loop.
void	vectorizeInterleaveGroup (const InterleaveGroup< Instruction > *Group, ArrayRef< VPValue * > VPDefs, VPTransformState &State, VPValue *Addr, ArrayRef< VPValue * > StoredValues, VPValue *BlockInMask, bool NeedsMaskForGaps)
	Try to vectorize interleaved access group Group with the base address given in Addr, optionally masking the vector operations if BlockInMask is non-null.
void	fixNonInductionPHIs (VPlan &Plan, VPTransformState &State)
	Fix the non-induction PHIs in Plan.
bool	useOrderedReductions (const RecurrenceDescriptor &RdxDesc)
	Returns true if the reordering of FP operations is not allowed, but we are able to vectorize with strict in-order reductions for the given RdxDesc.
PHINode *	getReductionResumeValue (const RecurrenceDescriptor &RdxDesc)
PHINode *	createInductionResumeValue (PHINode *OrigPhi, const InductionDescriptor &ID, Value *Step, ArrayRef< BasicBlock * > BypassBlocks, std::pair< BasicBlock *, Value * > AdditionalBypass={nullptr, nullptr})
	Create a new phi node for the induction variable OrigPhi to resume iteration count in the scalar epilogue, from where the vectorized loop left off.
Value *	getTripCount () const
	Returns the original loop trip count.
void	setTripCount (Value *TC)
	Used to set the trip count after ILV's construction and after the preheader block has been executed.

Protected Types
using	PhiVector = SmallVector< PHINode *, 4 >
	A small list of PHINodes.
using	ScalarParts = SmallVector< SmallVector< Value *, 4 >, 2 >
	A type for scalarized values in the new loop.

Protected Member Functions
void	fixupIVUsers (PHINode *OrigPhi, const InductionDescriptor &II, Value *VectorTripCount, Value *EndValue, BasicBlock *MiddleBlock, BasicBlock *VectorHeader, VPlan &Plan, VPTransformState &State)
	Set up the values of the IVs correctly when exiting the vector loop.
void	fixCrossIterationPHIs (VPTransformState &State)
	Handle all cross-iteration phis in the header.
void	fixFixedOrderRecurrence (VPFirstOrderRecurrencePHIRecipe *PhiR, VPTransformState &State)
	Create the exit value of first order recurrences in the middle block and update their users.
void	fixReduction (VPReductionPHIRecipe *Phi, VPTransformState &State)
	Create code for the loop exit value of the reduction.
void	sinkScalarOperands (Instruction *PredInst)
	Iteratively sink the scalarized operands of a predicated instruction into the block that was created for it.
void	truncateToMinimalBitwidths (VPTransformState &State)
	Shrinks vector element sizes to the smallest bitwidth they can be legally represented as.
Value *	getOrCreateVectorTripCount (BasicBlock *InsertBlock)
	Returns (and creates if needed) the trip count of the widened loop.
Value *	createBitOrPointerCast (Value *V, VectorType *DstVTy, const DataLayout &DL)
	Returns a bitcasted value to the requested vector type.
void	emitIterationCountCheck (BasicBlock *Bypass)
	Emit a bypass check to see if the vector trip count is zero, including if it overflows.
BasicBlock *	emitSCEVChecks (BasicBlock *Bypass)
	Emit a bypass check to see if all of the SCEV assumptions we've had to make are correct.
BasicBlock *	emitMemRuntimeChecks (BasicBlock *Bypass)
	Emit bypass checks to check any memory assumptions we may have made.
void	createVectorLoopSkeleton (StringRef Prefix)
	Emit basic blocks (prefixed with Prefix) for the iteration check, vector loop preheader, middle block and scalar preheader.
void	createInductionResumeValues (const SCEV2ValueTy &ExpandedSCEVs, std::pair< BasicBlock *, Value * > AdditionalBypass={nullptr, nullptr})
	Create new phi nodes for the induction variables to resume iteration count in the scalar epilogue, from where the vectorized loop left off.
BasicBlock *	completeLoopSkeleton ()
	Complete the loop skeleton by adding debug MDs, creating appropriate conditional branches in the middle block, preparing the builder and running the verifier.
void	collectPoisonGeneratingRecipes (VPTransformState &State)
	Collect poison-generating recipes that may generate a poison value that is used after vectorization, even when their operands are not poison.
virtual void	printDebugTracesAtStart ()
	Allow subclasses to override and print debug traces before/after vplan execution, when trace information is requested.
virtual void	printDebugTracesAtEnd ()

Protected Attributes
Loop *	OrigLoop
	The original loop.
PredicatedScalarEvolution &	PSE
	A wrapper around ScalarEvolution used to add runtime SCEV checks.
LoopInfo *	LI
	Loop Info.
DominatorTree *	DT
	Dominator Tree.
const TargetLibraryInfo *	TLI
	Target Library Info.
const TargetTransformInfo *	TTI
	Target Transform Info.
AssumptionCache *	AC
	Assumption Cache.
OptimizationRemarkEmitter *	ORE
	Interface to emit optimization remarks.
ElementCount	VF
	The vectorization SIMD factor to use.
ElementCount	MinProfitableTripCount
unsigned	UF
	The vectorization unroll factor to use.
IRBuilder	Builder
	The builder that we use.
BasicBlock *	LoopVectorPreHeader
	The vector-loop preheader.
BasicBlock *	LoopScalarPreHeader
	The scalar-loop preheader.
BasicBlock *	LoopMiddleBlock
	Middle Block between the vector and the scalar.
BasicBlock *	LoopExitBlock
	The unique ExitBlock of the scalar loop if one exists.
BasicBlock *	LoopScalarBody
	The scalar loop body.
SmallVector< BasicBlock *, 4 >	LoopBypassBlocks
	A list of all bypass blocks. The first block is the entry of the loop.
SmallVector< Instruction *, 4 >	PredicatedInstructions
	Store instructions that were predicated.
Value *	TripCount = nullptr
	Trip count of the original loop.
Value *	VectorTripCount = nullptr
	Trip count of the widened loop (TripCount - TripCount % (VF*UF))
LoopVectorizationLegality *	Legal
	The legality analysis.
LoopVectorizationCostModel *	Cost
	The profitablity analysis.
bool	AddedSafetyChecks = false
DenseMap< PHINode *, Value * >	IVEndValues
BlockFrequencyInfo *	BFI
	BFI and PSI are used to check for profile guided size optimizations.
ProfileSummaryInfo *	PSI
bool	OptForSizeBasedOnProfile
GeneratedRTChecks &	RTChecks
	Structure to hold information about generated runtime checks, responsible for cleaning the checks, if vectorization turns out unprofitable.
SmallMapVector< const RecurrenceDescriptor *, PHINode *, 4 >	ReductionResumeValues

Friends
class	LoopVectorizationPlanner

Detailed Description

InnerLoopVectorizer vectorizes loops which contain only one basic block to a specified vectorization factor (VF).

This class performs the widening of scalars into vectors, or multiple scalars. This class also implements the following features:

• It inserts an epilogue loop for handling loops that don't have iteration counts that are known to be a multiple of the vectorization factor.
• It handles the code generation for reduction variables.
• Scalarization (implementation using scalars) of un-vectorizable instructions. InnerLoopVectorizer does not perform any vectorization-legality checks, and relies on the caller to check for the different legality aspects. The InnerLoopVectorizer relies on the LoopVectorizationLegality class to provide information about the induction and reduction variables that were found to a given vectorization factor.

Definition at line 491 of file LoopVectorize.cpp.

Member Typedef Documentation

PhiVector

using llvm::InnerLoopVectorizer::PhiVector = SmallVector<PHINode *, 4>

protected

A small list of PHINodes.

Definition at line 597 of file LoopVectorize.cpp.

ScalarParts

using llvm::InnerLoopVectorizer::ScalarParts = SmallVector<SmallVector<Value *, 4>, 2>

protected

A type for scalarized values in the new loop.

Each value from the original loop, when scalarized, is represented by UF x VF scalar values in the new unrolled loop, where UF is the unroll factor and VF is the vectorization factor.

Definition at line 603 of file LoopVectorize.cpp.

VectorParts

using llvm::InnerLoopVectorizer::VectorParts = SmallVector<Value *, 2>

A type for vectorized values in the new loop.

Each value from the original loop, when vectorized, is represented by UF vector values in the new unrolled loop, where UF is the unroll factor.

Definition at line 540 of file LoopVectorize.cpp.

Constructor & Destructor Documentation

InnerLoopVectorizer()

llvm::InnerLoopVectorizer::InnerLoopVectorizer ( Loop *  OrigLoop, PredicatedScalarEvolution &  PSE, LoopInfo *  LI, DominatorTree *  DT, const TargetLibraryInfo *  TLI, const TargetTransformInfo *  TTI, AssumptionCache *  AC, OptimizationRemarkEmitter *  ORE, ElementCount  VecWidth, ElementCount  MinProfitableTripCount, unsigned  UnrollFactor, LoopVectorizationLegality *  LVL, LoopVectorizationCostModel *  CM, BlockFrequencyInfo *  BFI, ProfileSummaryInfo *  PSI, GeneratedRTChecks &  RTChecks  )

inline

Definition at line 493 of file LoopVectorize.cpp.

References BFI, llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::IRPass, llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::isZero(), MinProfitableTripCount, OptForSizeBasedOnProfile, OrigLoop, PSI, and llvm::shouldOptimizeForSize().

~InnerLoopVectorizer()

virtual llvm::InnerLoopVectorizer::~InnerLoopVectorizer ( )

virtualdefault

Member Function Documentation

areSafetyChecksAdded()

bool llvm::InnerLoopVectorizer::areSafetyChecksAdded ( )

inline

Definition at line 535 of file LoopVectorize.cpp.

References AddedSafetyChecks.

Referenced by llvm::LoopVectorizePass::processLoop().

collectPoisonGeneratingRecipes()

void InnerLoopVectorizer::collectPoisonGeneratingRecipes ( VPTransformState &  State )

protected

Collect poison-generating recipes that may generate a poison value that is used after vectorization, even when their operands are not poison.

Those recipes meet the following conditions:

• Contribute to the address computation of a recipe generating a widen memory load/store (VPWidenMemoryInstructionRecipe or VPInterleaveRecipe).
• Such a widen memory load/store has at least one underlying Instruction that is in a basic block that needs predication and after vectorization the generated instruction won't be predicated.

Definition at line 1070 of file LoopVectorize.cpp.

References llvm::SmallVectorBase< Size_T >::empty(), for(), if(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

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

completeLoopSkeleton()

BasicBlock * InnerLoopVectorizer::completeLoopSkeleton ( )

protected

Complete the loop skeleton by adding debug MDs, creating appropriate conditional branches in the middle block, preparing the builder and running the verifier.

Return the preheader of the completed vector loop.

Definition at line 3057 of file LoopVectorize.cpp.

References assert(), B, DT, llvm::LoopBase< BlockT, LoopT >::getLoopLatch(), getOrCreateVectorTripCount(), llvm::BasicBlock::getTerminator(), getTripCount(), llvm::ElementCount::isVector(), LoopMiddleBlock, LoopVectorPreHeader, OrigLoop, VectorTripCount, llvm::DominatorTreeBase< NodeT, IsPostDom >::verify(), and VF.

Referenced by llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), and createVectorizedLoopSkeleton().

createBitOrPointerCast()

Value * InnerLoopVectorizer::createBitOrPointerCast ( Value *  V, VectorType *  DstVTy, const DataLayout &  DL  )

protected

Returns a bitcasted value to the requested vector type.

Also handles bitcasts of vector<float> <-> vector<pointer> types.

Definition at line 2752 of file LoopVectorize.cpp.

References assert(), Builder, llvm::IRBuilderBase::CreateBitOrPointerCast(), DL, llvm::VectorType::get(), llvm::Type::getIntNTy(), llvm::CastInst::isBitOrNoopPointerCastable(), llvm::Type::isFloatingPointTy(), llvm::Type::isPointerTy(), and VF.

Referenced by vectorizeInterleaveGroup().

createInductionResumeValue()

PHINode * InnerLoopVectorizer::createInductionResumeValue	(	PHINode *	OrigPhi,
		const InductionDescriptor &	ID,
		Value *	Step,
		ArrayRef< BasicBlock * >	BypassBlocks,
		std::pair< BasicBlock *, Value * >	AdditionalBypass = {nullptr, nullptr}
	)

Create a new phi node for the induction variable OrigPhi to resume iteration count in the scalar epilogue, from where the vectorized loop left off.

Step is the SCEV-expanded induction step to use. In cases where the loop skeleton is more complicated (i.e., epilogue vectorization) and the resume values can come from an additional bypass block, the AdditionalBypass pair provides information about the bypass block and the end value on the edge from bypass to this loop.

Definition at line 2963 of file LoopVectorize.cpp.

References llvm::PHINode::addIncoming(), assert(), B, llvm::PHINode::Create(), emitTransformedIndex(), llvm::Instruction::getDebugLoc(), llvm::Instruction::getFastMathFlags(), llvm::InductionDescriptor::getInductionBinOp(), llvm::InductionDescriptor::getKind(), getOrCreateVectorTripCount(), llvm::LoopVectorizationLegality::getPrimaryInduction(), llvm::InductionDescriptor::getStartValue(), llvm::BasicBlock::getTerminator(), llvm::Value::getType(), IVEndValues, Legal, LoopMiddleBlock, LoopScalarPreHeader, LoopVectorPreHeader, llvm::Instruction::setDebugLoc(), llvm::PHINode::setIncomingValueForBlock(), llvm::Value::setName(), and VectorTripCount.

Referenced by createInductionResumeValues(), and llvm::LoopVectorizePass::processLoop().

createInductionResumeValues()

void InnerLoopVectorizer::createInductionResumeValues ( const SCEV2ValueTy &  ExpandedSCEVs, std::pair< BasicBlock *, Value * >  AdditionalBypass = {nullptr, nullptr}  )

protected

Create new phi nodes for the induction variables to resume iteration count in the scalar epilogue, from where the vectorized loop left off.

In cases where the loop skeleton is more complicated (eg. epilogue vectorization) and the resume values can come from an additional bypass block, the AdditionalBypass pair provides information about the bypass block and the end value on the edge from bypass to this loop.

Definition at line 3034 of file LoopVectorize.cpp.

References assert(), createInductionResumeValue(), getExpandedStep(), llvm::LoopVectorizationLegality::getInductionVars(), Legal, LoopBypassBlocks, LoopScalarPreHeader, and llvm::PHINode::setIncomingValueForBlock().

Referenced by llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), and createVectorizedLoopSkeleton().

createVectorizedLoopSkeleton()

std::pair< BasicBlock *, Value * > InnerLoopVectorizer::createVectorizedLoopSkeleton ( const SCEV2ValueTy &  ExpandedSCEVs )

virtual

Create a new empty loop that will contain vectorized instructions later on, while the old loop will be used as the scalar remainder.

Control flow is generated around the vectorized (and scalar epilogue) loops consisting of various checks and bypasses. Return the pre-header block of the new loop and the start value for the canonical induction, if it is != 0. The latter is the case when vectorizing the epilogue loop. In the case of epilogue vectorization, this function is overriden to handle the more complex control flow around the loops. ExpandedSCEVs is used to look up SCEV expansions for expressions needed during skeleton creation.

Reimplemented in llvm::InnerLoopAndEpilogueVectorizer.

Definition at line 3095 of file LoopVectorize.cpp.

References completeLoopSkeleton(), createInductionResumeValues(), createVectorLoopSkeleton(), emitIterationCountCheck(), emitMemRuntimeChecks(), emitSCEVChecks(), and LoopScalarPreHeader.

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

createVectorLoopSkeleton()

void InnerLoopVectorizer::createVectorLoopSkeleton ( StringRef  Prefix )

protected

Emit basic blocks (prefixed with Prefix) for the iteration check, vector loop preheader, middle block and scalar preheader.

Definition at line 2920 of file LoopVectorize.cpp.

References assert(), Builder, llvm::DominatorTreeBase< NodeT, IsPostDom >::changeImmediateDominator(), llvm::BranchInst::Create(), DT, llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::LoopBase< BlockT, LoopT >::getLoopLatch(), llvm::LoopBase< BlockT, LoopT >::getLoopPreheader(), llvm::BasicBlock::getTerminator(), llvm::IRBuilderBase::getTrue(), llvm::LoopBase< BlockT, LoopT >::getUniqueExitBlock(), llvm::ElementCount::isVector(), LI, LoopExitBlock, LoopMiddleBlock, LoopScalarBody, LoopScalarPreHeader, LoopVectorPreHeader, OrigLoop, llvm::ReplaceInstWithInst(), llvm::Instruction::setDebugLoc(), llvm::SplitBlock(), and VF.

Referenced by llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), and createVectorizedLoopSkeleton().

emitIterationCountCheck()

void InnerLoopVectorizer::emitIterationCountCheck ( BasicBlock *  Bypass )

protected

Emit a bypass check to see if the vector trip count is zero, including if it overflows.

Definition at line 2783 of file LoopVectorize.cpp.

References assert(), Builder, llvm::DominatorTreeBase< NodeT, IsPostDom >::changeImmediateDominator(), llvm::BranchInst::Create(), llvm::IRBuilderBase::CreateBinaryIntrinsic(), llvm::IRBuilderBase::CreateICmp(), llvm::createStepForVF(), llvm::IRBuilderBase::CreateSub(), llvm::DataAndControlFlowWithoutRuntimeCheck, DT, llvm::ConstantInt::get(), llvm::IRBuilderBase::getFalse(), llvm::DomTreeNodeBase< NodeT >::getIDom(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getKnownMinValue(), llvm::DominatorTreeBase< NodeT, IsPostDom >::getNode(), llvm::BasicBlock::getTerminator(), getTripCount(), llvm::Value::getType(), llvm::CmpInst::ICMP_ULE, llvm::CmpInst::ICMP_ULT, isIndvarOverflowCheckKnownFalse(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::isScalable(), llvm::ElementCount::isVector(), LHS, LI, LoopBypassBlocks, LoopExitBlock, LoopVectorPreHeader, MinProfitableTripCount, llvm::None, P, llvm::DominatorTreeBase< NodeT, IsPostDom >::properlyDominates(), llvm::ReplaceInstWithInst(), llvm::SplitBlock(), UF, and VF.

Referenced by createVectorizedLoopSkeleton().

emitMemRuntimeChecks()

BasicBlock * InnerLoopVectorizer::emitMemRuntimeChecks ( BasicBlock *  Bypass )

protected

Emit bypass checks to check any memory assumptions we may have made.

Returns the block containing the checks or nullptr if no checks have been added.

Definition at line 2884 of file LoopVectorize.cpp.

References AddedSafetyChecks, assert(), DEBUG_TYPE, llvm::OptimizationRemarkEmitter::emit(), llvm::EnableVPlanNativePath, llvm::LoopVectorizeHints::FK_Enabled, llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::BasicBlock::getParent(), llvm::Loop::getStartLoc(), llvm::Function::hasOptSize(), LoopBypassBlocks, LoopVectorPreHeader, OptForSizeBasedOnProfile, ORE, OrigLoop, and RTChecks.

Referenced by llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), and createVectorizedLoopSkeleton().

emitSCEVChecks()

BasicBlock * InnerLoopVectorizer::emitSCEVChecks ( BasicBlock *  Bypass )

protected

Emit a bypass check to see if all of the SCEV assumptions we've had to make are correct.

Returns the block containing the checks or nullptr if no checks have been added.

Definition at line 2857 of file LoopVectorize.cpp.

References AddedSafetyChecks, assert(), llvm::DominatorTreeBase< NodeT, IsPostDom >::changeImmediateDominator(), DT, llvm::LoopVectorizeHints::FK_Enabled, llvm::BasicBlock::getParent(), llvm::Function::hasOptSize(), llvm::ElementCount::isVector(), LoopBypassBlocks, LoopExitBlock, LoopVectorPreHeader, OptForSizeBasedOnProfile, RTChecks, and VF.

Referenced by llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), and createVectorizedLoopSkeleton().

fixCrossIterationPHIs()

void InnerLoopVectorizer::fixCrossIterationPHIs ( VPTransformState &  State )

protected

Handle all cross-iteration phis in the header.

Definition at line 3614 of file LoopVectorize.cpp.

References llvm::DominatorTree::dominates(), DT, llvm::SmallVectorImpl< T >::emplace_back(), fixFixedOrderRecurrence(), fixReduction(), llvm::VPBlockBase::getEntryBasicBlock(), llvm::VPReductionPHIRecipe::getRecurrenceDescriptor(), llvm::VPlan::getVectorLoopRegion(), llvm::VPTransformState::Plan, R2, and llvm::stable_sort().

Referenced by fixVectorizedLoop().

fixFixedOrderRecurrence()

void InnerLoopVectorizer::fixFixedOrderRecurrence ( VPFirstOrderRecurrencePHIRecipe *  PhiR, VPTransformState &  State  )

protected

Create the exit value of first order recurrences in the middle block and update their users.

Definition at line 3665 of file LoopVectorize.cpp.

References llvm::PHINode::addIncoming(), assert(), llvm::BasicBlock::begin(), Builder, llvm::IRBuilderBase::CreateExtractElement(), llvm::IRBuilderBase::CreatePHI(), llvm::IRBuilderBase::CreateSub(), llvm::SmallVectorBase< Size_T >::empty(), llvm::VPInstruction::FirstOrderRecurrenceSplice, llvm::ConstantInt::get(), llvm::VPTransformState::get(), llvm::VPHeaderPHIRecipe::getBackedgeValue(), llvm::IRBuilderBase::getInt32Ty(), llvm::VPValue::getLiveInIRValue(), llvm::VPValue::getNumUsers(), llvm::getRuntimeVF(), llvm::VPHeaderPHIRecipe::getStartValue(), llvm::BasicBlock::getTerminator(), llvm::VPValue::getUnderlyingValue(), Idx, llvm::ElementCount::isVector(), LoopMiddleBlock, LoopScalarPreHeader, llvm::VPTransformState::Plan, llvm::predecessors(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::VPlan::removeLiveOut(), llvm::IRBuilderBase::SetInsertPoint(), UF, llvm::VPValue::user_begin(), and VF.

Referenced by fixCrossIterationPHIs().

fixNonInductionPHIs()

void InnerLoopVectorizer::fixNonInductionPHIs	(	VPlan &	Plan,
		VPTransformState &	State
	)

Fix the non-induction PHIs in Plan.

Definition at line 4057 of file LoopVectorize.cpp.

References llvm::PHINode::addIncoming(), Builder, llvm::VPTransformState::CFG, llvm::VPTransformState::get(), llvm::VPlan::getEntry(), llvm::VPWidenPHIRecipe::getIncomingBlock(), llvm::VPWidenPHIRecipe::getIncomingValue(), llvm::VPUser::getNumOperands(), P, llvm::IRBuilderBase::SetInsertPoint(), llvm::vp_depth_first_deep(), and llvm::VPTransformState::CFGState::VPBB2IRBB.

Referenced by fixVectorizedLoop().

fixReduction()

void InnerLoopVectorizer::fixReduction ( VPReductionPHIRecipe *  Phi, VPTransformState &  State  )

protected

Create code for the loop exit value of the reduction.

Definition at line 3784 of file LoopVectorize.cpp.

References llvm::PHINode::addIncoming(), assert(), llvm::PHINode::blocks(), Builder, llvm::VPTransformState::CFG, llvm::PHINode::Create(), llvm::IRBuilderBase::CreateAlignedStore(), llvm::createAnyOfOp(), llvm::IRBuilderBase::CreateBinOp(), llvm::createMinMaxOp(), llvm::IRBuilderBase::CreateSExt(), llvm::createTargetReduction(), llvm::IRBuilderBase::CreateTrunc(), llvm::IRBuilderBase::CreateZExt(), llvm::VectorType::get(), llvm::VPTransformState::get(), llvm::VPHeaderPHIRecipe::getBackedgeValue(), llvm::PHINode::getBasicBlockIndex(), llvm::Instruction::getDebugLoc(), llvm::VPBasicBlock::getEnclosingLoopRegion(), llvm::VPBlockBase::getExitingBasicBlock(), llvm::RecurrenceDescriptor::getFastMathFlags(), llvm::BasicBlock::getFirstInsertionPt(), llvm::PHINode::getIncomingValueForBlock(), llvm::RecurrenceDescriptor::getLoopExitInstr(), llvm::LoopBase< BlockT, LoopT >::getLoopLatch(), llvm::RecurrenceDescriptor::getOpcode(), llvm::VPRecipeBase::getParent(), llvm::VPReductionPHIRecipe::getRecurrenceDescriptor(), llvm::RecurrenceDescriptor::getRecurrenceKind(), llvm::RecurrenceDescriptor::getRecurrenceStartValue(), llvm::RecurrenceDescriptor::getRecurrenceType(), llvm::VPHeaderPHIRecipe::getStartValue(), llvm::BasicBlock::getTerminator(), llvm::Value::getType(), llvm::VPValue::getUnderlyingValue(), I, llvm::RecurrenceDescriptor::IntermediateStore, llvm::is_contained(), llvm::RecurrenceDescriptor::isAnyOfRecurrenceKind(), llvm::VPReductionPHIRecipe::isInLoop(), llvm::VPReductionPHIRecipe::isOrdered(), llvm::LoopVectorizationLegality::isReductionVariable(), llvm::RecurrenceDescriptor::isSigned(), llvm::ElementCount::isVector(), Legal, LoopExitBlock, LoopMiddleBlock, LoopScalarPreHeader, llvm::make_early_inc_range(), OrigLoop, llvm::BasicBlock::phis(), llvm::VPTransformState::Plan, llvm::predecessors(), PreferPredicatedReductionSelect, llvm::TargetTransformInfo::preferPredicatedReductionSelect(), llvm::propagateMetadata(), ReductionResumeValues, llvm::VPlan::removeLiveOut(), llvm::VPTransformState::reset(), llvm::VPTransformState::setDebugLocFrom(), llvm::IRBuilderBase::setFastMathFlags(), llvm::PHINode::setIncomingValue(), llvm::IRBuilderBase::SetInsertPoint(), UF, llvm::Value::users(), users, VF, and llvm::VPTransformState::CFGState::VPBB2IRBB.

Referenced by fixCrossIterationPHIs().

fixupIVUsers()

void InnerLoopVectorizer::fixupIVUsers ( PHINode *  OrigPhi, const InductionDescriptor &  II, Value *  VectorTripCount, Value *  EndValue, BasicBlock *  MiddleBlock, BasicBlock *  VectorHeader, VPlan &  Plan, VPTransformState &  State  )

protected

Set up the values of the IVs correctly when exiting the vector loop.

Definition at line 3160 of file LoopVectorize.cpp.

References assert(), B, llvm::LoopBase< BlockT, LoopT >::contains(), emitTransformedIndex(), llvm::ConstantInt::get(), llvm::VPTransformState::get(), llvm::Instruction::getFastMathFlags(), llvm::PHINode::getIncomingValueForBlock(), llvm::InductionDescriptor::getInductionBinOp(), llvm::InductionDescriptor::getKind(), llvm::VPValue::getLiveInIRValue(), llvm::LoopBase< BlockT, LoopT >::getLoopLatch(), llvm::VPlan::getSCEVExpansion(), llvm::InductionDescriptor::getStartValue(), llvm::InductionDescriptor::getStep(), llvm::BasicBlock::getTerminator(), llvm::Value::getType(), llvm::LoopBase< BlockT, LoopT >::getUniqueExitBlock(), I, llvm::VPValue::isLiveIn(), OrigLoop, PHI, PostInc, llvm::VPlan::removeLiveOut(), llvm::Value::setName(), llvm::Value::users(), and VectorTripCount.

Referenced by fixVectorizedLoop().

fixVectorizedLoop()

void InnerLoopVectorizer::fixVectorizedLoop	(	VPTransformState &	State,
		VPlan &	Plan
	)

Fix the vectorized code, taking care of header phi's, live-outs, and more.

Definition at line 3532 of file LoopVectorize.cpp.

References llvm::VPTransformState::Builder, llvm::VPTransformState::CFG, cse(), llvm::EnableVPlanNativePath, llvm::VPTransformState::CFGState::ExitBB, fixCrossIterationPHIs(), fixNonInductionPHIs(), fixupIVUsers(), llvm::ScalarEvolution::forgetLoop(), llvm::ScalarEvolution::forgetValue(), llvm::LoopBase< BlockT, LoopT >::getExitBlocks(), llvm::VPBlockBase::getExitingBasicBlock(), llvm::BasicBlock::getFirstNonPHIIt(), llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::LoopVectorizationLegality::getInductionVars(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getKnownMinValue(), llvm::VPlan::getLiveOuts(), llvm::LoopInfoBase< BlockT, LoopT >::getLoopFor(), llvm::LoopBase< BlockT, LoopT >::getLoopPreheader(), getOrCreateVectorTripCount(), llvm::PredicatedScalarEvolution::getSE(), llvm::VPlan::getVectorLoopRegion(), llvm::ElementCount::isVector(), IVEndValues, Legal, LI, LoopMiddleBlock, LoopScalarBody, OrigLoop, PredicatedInstructions, PSE, llvm::IRBuilderBase::SetInsertPoint(), llvm::setProfileInfoAfterUnrolling(), sinkScalarOperands(), truncateToMinimalBitwidths(), UF, VF, and llvm::VPTransformState::CFGState::VPBB2IRBB.

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

getOrCreateVectorTripCount()

Value * InnerLoopVectorizer::getOrCreateVectorTripCount ( BasicBlock *  InsertBlock )

protected

Returns (and creates if needed) the trip count of the widened loop.

Definition at line 2702 of file LoopVectorize.cpp.

References assert(), Builder, llvm::IRBuilderBase::CreateAdd(), llvm::IRBuilderBase::CreateICmpEQ(), llvm::IRBuilderBase::CreateSelect(), llvm::createStepForVF(), llvm::IRBuilderBase::CreateSub(), llvm::IRBuilderBase::CreateURem(), llvm::ConstantInt::get(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getKnownMinValue(), llvm::getRuntimeVF(), llvm::BasicBlock::getTerminator(), getTripCount(), llvm::Value::getType(), llvm::isPowerOf2_32(), llvm::ElementCount::isVector(), UF, VectorTripCount, and VF.

Referenced by completeLoopSkeleton(), llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), createInductionResumeValue(), llvm::LoopVectorizationPlanner::executePlan(), and fixVectorizedLoop().

getReductionResumeValue()

PHINode * InnerLoopVectorizer::getReductionResumeValue

(

const RecurrenceDescriptor &

RdxDesc

)

Definition at line 1154 of file LoopVectorize.cpp.

References assert(), and ReductionResumeValues.

Referenced by llvm::LoopVectorizePass::processLoop().

getTripCount()

Value * llvm::InnerLoopVectorizer::getTripCount ( ) const

inline

Returns the original loop trip count.

Definition at line 586 of file LoopVectorize.cpp.

References TripCount.

Referenced by completeLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), llvm::LoopVectorizationPlanner::executePlan(), getOrCreateVectorTripCount(), and llvm::LoopVectorizePass::processLoop().

printDebugTracesAtEnd()

virtual void llvm::InnerLoopVectorizer::printDebugTracesAtEnd ( )

inlineprotectedvirtual

Reimplemented in llvm::EpilogueVectorizerMainLoop, and llvm::EpilogueVectorizerEpilogueLoop.

Definition at line 685 of file LoopVectorize.cpp.

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

printDebugTracesAtStart()

virtual void llvm::InnerLoopVectorizer::printDebugTracesAtStart ( )

inlineprotectedvirtual

Allow subclasses to override and print debug traces before/after vplan execution, when trace information is requested.

Reimplemented in llvm::EpilogueVectorizerMainLoop, and llvm::EpilogueVectorizerEpilogueLoop.

Definition at line 684 of file LoopVectorize.cpp.

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

scalarizeInstruction()

void InnerLoopVectorizer::scalarizeInstruction	(	const Instruction *	Instr,
		VPReplicateRecipe *	RepRecipe,
		const VPIteration &	Instance,
		VPTransformState &	State
	)

A helper function to scalarize a single Instruction in the innermost loop.

Generates a sequence of scalar instances for each lane between MinLane and MaxLane, times each part between MinPart and MaxPart, inclusive. Uses the VPValue operands from RepRecipe instead of Instr's operands.

Definition at line 2651 of file LoopVectorize.cpp.

References AC, llvm::VPTransformState::addNewMetadata(), assert(), llvm::VPTransformState::Builder, DL, llvm::enumerate(), llvm::VPTransformState::get(), llvm::VPLane::getFirstLane(), llvm::VPBlockBase::getParent(), llvm::VPRecipeBase::getParent(), I, llvm::IRBuilderBase::Insert(), llvm::VPIteration::isFirstIteration(), llvm::VPRegionBlock::isReplicator(), llvm::vputils::isUniformAfterVectorization(), llvm::VPUser::operands(), PredicatedInstructions, llvm::AssumptionCache::registerAssumption(), llvm::VPTransformState::set(), llvm::VPTransformState::setDebugLocFrom(), llvm::VPRecipeWithIRFlags::setFlags(), llvm::Value::setName(), and llvm::User::setOperand().

Referenced by llvm::VPReplicateRecipe::execute().

setTripCount()

void llvm::InnerLoopVectorizer::setTripCount ( Value *  TC )

inline

Used to set the trip count after ILV's construction and after the preheader block has been executed.

Note that this always holds the trip count of the original loop for both main loop and epilogue vectorization.

Definition at line 591 of file LoopVectorize.cpp.

References TripCount.

Referenced by llvm::LoopVectorizationPlanner::executePlan(), and llvm::LoopVectorizePass::processLoop().

sinkScalarOperands()

void InnerLoopVectorizer::sinkScalarOperands ( Instruction *  PredInst )

protected

Iteratively sink the scalarized operands of a predicated instruction into the block that was created for it.

Definition at line 3982 of file LoopVectorize.cpp.

References llvm::all_of(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorImpl< T >::clear(), llvm::SetVector< T, Vector, Set, N >::empty(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::PHINode::getIncomingValueNumForOperand(), llvm::LoopInfoBase< BlockT, LoopT >::getLoopFor(), llvm::Instruction::getParent(), I, llvm::SetVector< T, Vector, Set, N >::insert(), LI, llvm::User::op_begin(), llvm::User::op_end(), llvm::SetVector< T, Vector, Set, N >::pop_back_val(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by fixVectorizedLoop().

truncateToMinimalBitwidths()

void InnerLoopVectorizer::truncateToMinimalBitwidths ( VPTransformState &  State )

protected

Shrinks vector element sizes to the smallest bitwidth they can be legally represented as.

Definition at line 3394 of file LoopVectorize.cpp.

References B, llvm::LoopBase< BlockT, LoopT >::contains(), llvm::SmallPtrSetImpl< PtrType >::count(), llvm::Instruction::eraseFromParent(), llvm::IntegerType::get(), llvm::VectorType::get(), llvm::VPTransformState::get(), llvm::Type::getContext(), llvm::User::getOperand(), llvm::VPlan::getVPValue(), llvm::VPTransformState::hasAnyVectorValue(), I, llvm::SmallPtrSetImpl< PtrType >::insert(), llvm_unreachable, OrigLoop, llvm::VPTransformState::Plan, llvm::VPTransformState::reset(), smallestIntegerVectorType(), llvm::Value::takeName(), UF, and llvm::Value::use_empty().

Referenced by fixVectorizedLoop().

useOrderedReductions()

bool InnerLoopVectorizer::useOrderedReductions

(

const RecurrenceDescriptor &

RdxDesc

)

Returns true if the reordering of FP operations is not allowed, but we are able to vectorize with strict in-order reductions for the given RdxDesc.

Definition at line 4077 of file LoopVectorize.cpp.

Referenced by llvm::VPReductionRecipe::execute().

vectorizeInterleaveGroup()

void InnerLoopVectorizer::vectorizeInterleaveGroup	(	const InterleaveGroup< Instruction > *	Group,
		ArrayRef< VPValue * >	VPDefs,
		VPTransformState &	State,
		VPValue *	Addr,
		ArrayRef< VPValue * >	StoredValues,
		VPValue *	BlockInMask,
		bool	NeedsMaskForGaps
	)

Try to vectorize interleaved access group Group with the base address given in Addr, optionally masking the vector operations if BlockInMask is non-null.

Use State to translate given VPValues to IR values in the vectorized loop.

Definition at line 2409 of file LoopVectorize.cpp.

References llvm::InterleaveGroup< InstTy >::addMetadata(), Addr, assert(), Builder, llvm::IRBuilderBase::CreateAdd(), llvm::IRBuilderBase::CreateAlignedLoad(), llvm::IRBuilderBase::CreateAlignedStore(), llvm::IRBuilderBase::CreateBinOp(), llvm::createBitMaskForGaps(), createBitOrPointerCast(), llvm::IRBuilderBase::CreateExtractValue(), llvm::IRBuilderBase::CreateGEP(), llvm::IRBuilderBase::CreateIntrinsic(), llvm::IRBuilderBase::CreateMaskedLoad(), llvm::IRBuilderBase::CreateMaskedStore(), llvm::IRBuilderBase::CreateMul(), llvm::IRBuilderBase::CreateNeg(), llvm::createReplicatedMask(), llvm::IRBuilderBase::CreateShuffleVector(), llvm::createStrideMask(), llvm::IRBuilderBase::CreateSub(), llvm::IRBuilderBase::CreateVectorReverse(), DL, gep, llvm::VectorType::get(), llvm::PoisonValue::get(), llvm::VPTransformState::get(), llvm::InterleaveGroup< InstTy >::getAlign(), llvm::InterleaveGroup< InstTy >::getFactor(), llvm::InterleaveGroup< InstTy >::getIndex(), llvm::InterleaveGroup< InstTy >::getInsertPos(), llvm::IRBuilderBase::getInt1Ty(), llvm::IRBuilderBase::getInt32(), llvm::IRBuilderBase::getInt32Ty(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getKnownMinValue(), llvm::getLoadStoreType(), llvm::InterleaveGroup< InstTy >::getMember(), llvm::getRuntimeVF(), llvm::Value::getType(), I, Idx, interleaveVectors(), llvm::InterleaveGroup< InstTy >::isReverse(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::isScalable(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::VPTransformState::set(), llvm::VPTransformState::setDebugLocFrom(), llvm::Value::stripPointerCasts(), UF, useMaskedInterleavedAccesses(), and VF.

Referenced by llvm::VPInterleaveRecipe::execute().

Friends And Related Function Documentation

LoopVectorizationPlanner

friend class LoopVectorizationPlanner

friend

Definition at line 594 of file LoopVectorize.cpp.

Member Data Documentation

AC

AssumptionCache* llvm::InnerLoopVectorizer::AC

protected

Assumption Cache.

Definition at line 708 of file LoopVectorize.cpp.

Referenced by scalarizeInstruction().

AddedSafetyChecks

bool llvm::InnerLoopVectorizer::AddedSafetyChecks = false

protected

Definition at line 763 of file LoopVectorize.cpp.

Referenced by areSafetyChecksAdded(), emitMemRuntimeChecks(), and emitSCEVChecks().

BFI

BlockFrequencyInfo* llvm::InnerLoopVectorizer::BFI

protected

BFI and PSI are used to check for profile guided size optimizations.

Definition at line 770 of file LoopVectorize.cpp.

Referenced by InnerLoopVectorizer().

Builder

IRBuilder llvm::InnerLoopVectorizer::Builder

protected

The builder that we use.

Definition at line 724 of file LoopVectorize.cpp.

Referenced by createBitOrPointerCast(), createVectorLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), llvm::EpilogueVectorizerEpilogueLoop::emitMinimumVectorEpilogueIterCountCheck(), llvm::LoopVectorizationPlanner::executePlan(), fixFixedOrderRecurrence(), fixNonInductionPHIs(), fixReduction(), getOrCreateVectorTripCount(), and vectorizeInterleaveGroup().

Cost

LoopVectorizationCostModel* llvm::InnerLoopVectorizer::Cost

protected

The profitablity analysis.

Definition at line 760 of file LoopVectorize.cpp.

DT

DominatorTree* llvm::InnerLoopVectorizer::DT

protected

Dominator Tree.

Definition at line 699 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), createVectorLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), llvm::EpilogueVectorizerEpilogueLoop::emitMinimumVectorEpilogueIterCountCheck(), emitSCEVChecks(), and fixCrossIterationPHIs().

IVEndValues

DenseMap<PHINode *, Value *> llvm::InnerLoopVectorizer::IVEndValues

protected

Definition at line 767 of file LoopVectorize.cpp.

Referenced by createInductionResumeValue(), and fixVectorizedLoop().

Legal

LoopVectorizationLegality* llvm::InnerLoopVectorizer::Legal

protected

The legality analysis.

Definition at line 757 of file LoopVectorize.cpp.

Referenced by createInductionResumeValue(), createInductionResumeValues(), llvm::LoopVectorizationPlanner::executePlan(), fixReduction(), and fixVectorizedLoop().

LI

LoopInfo* llvm::InnerLoopVectorizer::LI

protected

Loop Info.

Definition at line 696 of file LoopVectorize.cpp.

Referenced by llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), createVectorLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), fixVectorizedLoop(), and sinkScalarOperands().

LoopBypassBlocks

SmallVector<BasicBlock *, 4> llvm::InnerLoopVectorizer::LoopBypassBlocks

protected

A list of all bypass blocks. The first block is the entry of the loop.

Definition at line 745 of file LoopVectorize.cpp.

Referenced by llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), createInductionResumeValues(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), emitMemRuntimeChecks(), llvm::EpilogueVectorizerEpilogueLoop::emitMinimumVectorEpilogueIterCountCheck(), and emitSCEVChecks().

LoopExitBlock

BasicBlock* llvm::InnerLoopVectorizer::LoopExitBlock

protected

The unique ExitBlock of the scalar loop if one exists.

Note that there can be multiple exiting edges reaching this block.

Definition at line 739 of file LoopVectorize.cpp.

Referenced by llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), createVectorLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), emitSCEVChecks(), and fixReduction().

LoopMiddleBlock

BasicBlock* llvm::InnerLoopVectorizer::LoopMiddleBlock

protected

Middle Block between the vector and the scalar.

Definition at line 735 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), createInductionResumeValue(), createVectorLoopSkeleton(), fixFixedOrderRecurrence(), fixReduction(), and fixVectorizedLoop().

LoopScalarBody

BasicBlock* llvm::InnerLoopVectorizer::LoopScalarBody

protected

The scalar loop body.

Definition at line 742 of file LoopVectorize.cpp.

Referenced by createVectorLoopSkeleton(), and fixVectorizedLoop().

LoopScalarPreHeader

BasicBlock* llvm::InnerLoopVectorizer::LoopScalarPreHeader

protected

The scalar-loop preheader.

Definition at line 732 of file LoopVectorize.cpp.

Referenced by llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), createInductionResumeValue(), createInductionResumeValues(), createVectorizedLoopSkeleton(), createVectorLoopSkeleton(), fixFixedOrderRecurrence(), and fixReduction().

LoopVectorPreHeader

BasicBlock* llvm::InnerLoopVectorizer::LoopVectorPreHeader

protected

The vector-loop preheader.

Definition at line 729 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), llvm::EpilogueVectorizerMainLoop::createEpilogueVectorizedLoopSkeleton(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), createInductionResumeValue(), createVectorLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), emitMemRuntimeChecks(), llvm::EpilogueVectorizerEpilogueLoop::emitMinimumVectorEpilogueIterCountCheck(), and emitSCEVChecks().

MinProfitableTripCount

ElementCount llvm::InnerLoopVectorizer::MinProfitableTripCount

protected

Definition at line 717 of file LoopVectorize.cpp.

Referenced by emitIterationCountCheck(), and InnerLoopVectorizer().

OptForSizeBasedOnProfile

bool llvm::InnerLoopVectorizer::OptForSizeBasedOnProfile

protected

Definition at line 775 of file LoopVectorize.cpp.

Referenced by emitMemRuntimeChecks(), emitSCEVChecks(), and InnerLoopVectorizer().

ORE

OptimizationRemarkEmitter* llvm::InnerLoopVectorizer::ORE

protected

Interface to emit optimization remarks.

Definition at line 711 of file LoopVectorize.cpp.

Referenced by emitMemRuntimeChecks().

OrigLoop

Loop* llvm::InnerLoopVectorizer::OrigLoop

protected

The original loop.

Definition at line 688 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), createVectorLoopSkeleton(), emitMemRuntimeChecks(), fixReduction(), fixupIVUsers(), fixVectorizedLoop(), InnerLoopVectorizer(), llvm::EpilogueVectorizerMainLoop::printDebugTracesAtEnd(), llvm::EpilogueVectorizerEpilogueLoop::printDebugTracesAtEnd(), and truncateToMinimalBitwidths().

PredicatedInstructions

SmallVector<Instruction *, 4> llvm::InnerLoopVectorizer::PredicatedInstructions

protected

Store instructions that were predicated.

Definition at line 748 of file LoopVectorize.cpp.

Referenced by fixVectorizedLoop(), and scalarizeInstruction().

PSE

PredicatedScalarEvolution& llvm::InnerLoopVectorizer::PSE

protected

A wrapper around ScalarEvolution used to add runtime SCEV checks.

Applies dynamic knowledge to simplify SCEV expressions and converts them to a more usable form.

Definition at line 693 of file LoopVectorize.cpp.

Referenced by fixVectorizedLoop().

PSI

ProfileSummaryInfo* llvm::InnerLoopVectorizer::PSI

protected

Definition at line 771 of file LoopVectorize.cpp.

Referenced by InnerLoopVectorizer().

ReductionResumeValues

SmallMapVector<const RecurrenceDescriptor *, PHINode *, 4> llvm::InnerLoopVectorizer::ReductionResumeValues

protected

Definition at line 784 of file LoopVectorize.cpp.

Referenced by fixReduction(), and getReductionResumeValue().

RTChecks

GeneratedRTChecks& llvm::InnerLoopVectorizer::RTChecks

protected

Structure to hold information about generated runtime checks, responsible for cleaning the checks, if vectorization turns out unprofitable.

Definition at line 779 of file LoopVectorize.cpp.

Referenced by emitMemRuntimeChecks(), and emitSCEVChecks().

TLI

const TargetLibraryInfo* llvm::InnerLoopVectorizer::TLI

protected

Target Library Info.

Definition at line 702 of file LoopVectorize.cpp.

TripCount

Value* llvm::InnerLoopVectorizer::TripCount = nullptr

protected

Trip count of the original loop.

Definition at line 751 of file LoopVectorize.cpp.

Referenced by llvm::EpilogueVectorizerEpilogueLoop::EpilogueVectorizerEpilogueLoop(), getTripCount(), and setTripCount().

TTI

const TargetTransformInfo* llvm::InnerLoopVectorizer::TTI

protected

Target Transform Info.

Definition at line 705 of file LoopVectorize.cpp.

UF

unsigned llvm::InnerLoopVectorizer::UF

protected

The vectorization unroll factor to use.

Each scalar is vectorized to this many different vector instructions.

Definition at line 721 of file LoopVectorize.cpp.

Referenced by emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), fixFixedOrderRecurrence(), fixReduction(), fixVectorizedLoop(), getOrCreateVectorTripCount(), truncateToMinimalBitwidths(), and vectorizeInterleaveGroup().

VectorTripCount

Value* llvm::InnerLoopVectorizer::VectorTripCount = nullptr

protected

Trip count of the widened loop (TripCount - TripCount % (VF*UF))

Definition at line 754 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), createInductionResumeValue(), fixupIVUsers(), and getOrCreateVectorTripCount().

VF

ElementCount llvm::InnerLoopVectorizer::VF

protected

The vectorization SIMD factor to use.

Each vector will have this many vector elements.

Definition at line 715 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), createBitOrPointerCast(), createVectorLoopSkeleton(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), emitSCEVChecks(), fixFixedOrderRecurrence(), fixReduction(), fixVectorizedLoop(), getOrCreateVectorTripCount(), and vectorizeInterleaveGroup().

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

• lib/Transforms/Vectorize/LoopVectorize.cpp