LLVM  15.0.0git
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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:
Inheritance graph
Collaboration diagram for llvm::InnerLoopVectorizer:
Collaboration graph

Public Types

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

Public Member Functions

 InnerLoopVectorizer (Loop *OrigLoop, PredicatedScalarEvolution &PSE, LoopInfo *LI, DominatorTree *DT, const TargetLibraryInfo *TLI, const TargetTransformInfo *TTI, AssumptionCache *AC, OptimizationRemarkEmitter *ORE, ElementCount VecWidth, unsigned UnrollFactor, LoopVectorizationLegality *LVL, LoopVectorizationCostModel *CM, BlockFrequencyInfo *BFI, ProfileSummaryInfo *PSI, GeneratedRTChecks &RTChecks)
virtual ~InnerLoopVectorizer ()=default
virtual std::pair< BasicBlock *, Value * > createVectorizedLoopSkeleton ()
 Create a new empty loop that will contain vectorized instructions later on, while the old loop will be used as the scalar remainder. More...
void widenCallInstruction (CallInst &I, VPValue *Def, VPUser &ArgOperands, VPTransformState &State)
 Widen a single call instruction within the innermost loop. More...
void fixVectorizedLoop (VPTransformState &State, VPlan &Plan)
 Fix the vectorized code, taking care of header phi's, live-outs, and more. More...
bool areSafetyChecksAdded ()
void scalarizeInstruction (Instruction *Instr, VPReplicateRecipe *RepRecipe, const VPIteration &Instance, bool IfPredicateInstr, VPTransformState &State)
 A helper function to scalarize a single Instruction in the innermost loop. More...
void packScalarIntoVectorValue (VPValue *Def, const VPIteration &Instance, VPTransformState &State)
 Construct the vector value of a scalarized value V one lane at a time. More...
void vectorizeInterleaveGroup (const InterleaveGroup< Instruction > *Group, ArrayRef< VPValue * > VPDefs, VPTransformState &State, VPValue *Addr, ArrayRef< VPValue * > StoredValues, VPValue *BlockInMask=nullptr)
 Try to vectorize interleaved access group Group with the base address given in Addr, optionally masking the vector operations if BlockInMask is non-null. More...
void setDebugLocFromInst (const Value *V)
 Set the debug location in the builder Ptr using the debug location in V. More...
void fixNonInductionPHIs (VPlan &Plan, VPTransformState &State)
 Fix the non-induction PHIs in Plan. More...
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. More...
virtual ValuegetBroadcastInstrs (Value *V)
 Create a broadcast instruction. More...
void addMetadata (Instruction *To, Instruction *From)
 Add metadata from one instruction to another. More...
void addMetadata (ArrayRef< Value * > To, Instruction *From)
 Similar to the previous function but it adds the metadata to a vector of instructions. More...
PHINodegetReductionResumeValue (const RecurrenceDescriptor &RdxDesc)

Protected Types

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

Protected Member Functions

void fixupIVUsers (PHINode *OrigPhi, const InductionDescriptor &II, Value *VectorTripCount, Value *EndValue, BasicBlock *MiddleBlock, BasicBlock *VectorHeader, VPlan &Plan)
 Set up the values of the IVs correctly when exiting the vector loop. More...
void fixCrossIterationPHIs (VPTransformState &State)
 Handle all cross-iteration phis in the header. More...
void fixFirstOrderRecurrence (VPFirstOrderRecurrencePHIRecipe *PhiR, VPTransformState &State)
 Create the exit value of first order recurrences in the middle block and update their users. More...
void fixReduction (VPReductionPHIRecipe *Phi, VPTransformState &State)
 Create code for the loop exit value of the reduction. More...
void clearReductionWrapFlags (VPReductionPHIRecipe *PhiR, VPTransformState &State)
 Clear NSW/NUW flags from reduction instructions if necessary. More...
void sinkScalarOperands (Instruction *PredInst)
 Iteratively sink the scalarized operands of a predicated instruction into the block that was created for it. More...
void truncateToMinimalBitwidths (VPTransformState &State)
 Shrinks vector element sizes to the smallest bitwidth they can be legally represented as. More...
ValuegetOrCreateTripCount (BasicBlock *InsertBlock)
 Returns (and creates if needed) the original loop trip count. More...
ValuegetOrCreateVectorTripCount (BasicBlock *InsertBlock)
 Returns (and creates if needed) the trip count of the widened loop. More...
ValuecreateBitOrPointerCast (Value *V, VectorType *DstVTy, const DataLayout &DL)
 Returns a bitcasted value to the requested vector type. More...
void emitIterationCountCheck (BasicBlock *Bypass)
 Emit a bypass check to see if the vector trip count is zero, including if it overflows. More...
BasicBlockemitSCEVChecks (BasicBlock *Bypass)
 Emit a bypass check to see if all of the SCEV assumptions we've had to make are correct. More...
BasicBlockemitMemRuntimeChecks (BasicBlock *Bypass)
 Emit bypass checks to check any memory assumptions we may have made. More...
void createVectorLoopSkeleton (StringRef Prefix)
 Emit basic blocks (prefixed with Prefix) for the iteration check, vector loop preheader, middle block and scalar preheader. More...
void createInductionResumeValues (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. More...
BasicBlockcompleteLoopSkeleton (MDNode *OrigLoopID)
 Complete the loop skeleton by adding debug MDs, creating appropriate conditional branches in the middle block, preparing the builder and running the verifier. More...
void addNewMetadata (Instruction *To, const Instruction *Orig)
 Add additional metadata to To that was not present on Orig. More...
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. More...
virtual void printDebugTracesAtStart ()
 Allow subclasses to override and print debug traces before/after vplan execution, when trace information is requested. More...
virtual void printDebugTracesAtEnd ()

Protected Attributes

 The original loop. More...
 A wrapper around ScalarEvolution used to add runtime SCEV checks. More...
 Loop Info. More...
 Dominator Tree. More...
 Alias Analysis. More...
const TargetLibraryInfoTLI
 Target Library Info. More...
const TargetTransformInfoTTI
 Target Transform Info. More...
 Assumption Cache. More...
 Interface to emit optimization remarks. More...
std::unique_ptr< LoopVersioningLVer
 LoopVersioning. More...
ElementCount VF
 The vectorization SIMD factor to use. More...
unsigned UF
 The vectorization unroll factor to use. More...
IRBuilder Builder
 The builder that we use. More...
 The vector-loop preheader. More...
 The scalar-loop preheader. More...
 Middle Block between the vector and the scalar. More...
 The unique ExitBlock of the scalar loop if one exists. More...
 The scalar loop body. More...
SmallVector< BasicBlock *, 4 > LoopBypassBlocks
 A list of all bypass blocks. The first block is the entry of the loop. More...
SmallVector< Instruction *, 4 > PredicatedInstructions
 Store instructions that were predicated. More...
ValueTripCount = nullptr
 Trip count of the original loop. More...
ValueVectorTripCount = nullptr
 Trip count of the widened loop (TripCount - TripCount % (VF*UF)) More...
 The legality analysis. More...
 The profitablity analysis. More...
bool AddedSafetyChecks = false
DenseMap< PHINode *, Value * > IVEndValues
 BFI and PSI are used to check for profile guided size optimizations. More...
bool OptForSizeBasedOnProfile
 Structure to hold information about generated runtime checks, responsible for cleaning the checks, if vectorization turns out unprofitable. More...
SmallMapVector< const RecurrenceDescriptor *, PHINode *, 4 > ReductionResumeValues


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:

Definition at line 438 of file LoopVectorize.cpp.

Member Typedef Documentation

◆ PhiVector

A small list of PHINodes.

Definition at line 545 of file LoopVectorize.cpp.

◆ ScalarParts

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 551 of file LoopVectorize.cpp.

◆ VectorParts

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 483 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,
unsigned  UnrollFactor,
LoopVectorizationLegality LVL,
LoopVectorizationCostModel CM,
BlockFrequencyInfo BFI,
ProfileSummaryInfo PSI,
GeneratedRTChecks RTChecks 

◆ ~InnerLoopVectorizer()

virtual llvm::InnerLoopVectorizer::~InnerLoopVectorizer ( )

Member Function Documentation

◆ addMetadata() [1/2]

void InnerLoopVectorizer::addMetadata ( ArrayRef< Value * >  To,
Instruction From 

Similar to the previous function but it adds the metadata to a vector of instructions.

Definition at line 1143 of file LoopVectorize.cpp.

References addMetadata(), From, and I.

◆ addMetadata() [2/2]

void InnerLoopVectorizer::addMetadata ( Instruction To,
Instruction From 

Add metadata from one instruction to another.

This includes both the original MDs from From and additional ones (

See also
addNewMetadata). Use this for newly created instructions in the vector loop.

Definition at line 1137 of file LoopVectorize.cpp.

References addNewMetadata(), From, and llvm::propagateMetadata().

Referenced by addMetadata(), llvm::VPWidenRecipe::execute(), llvm::VPWidenSelectRecipe::execute(), llvm::VPWidenGEPRecipe::execute(), llvm::VPWidenIntOrFpInductionRecipe::execute(), llvm::VPWidenMemoryInstructionRecipe::execute(), and widenCallInstruction().

◆ addNewMetadata()

void InnerLoopVectorizer::addNewMetadata ( Instruction To,
const Instruction Orig 

Add additional metadata to To that was not present on Orig.

Currently this is used to add the noalias annotations based on the inserted memchecks. Use this for instructions that are cloned into the vector loop.

Definition at line 1049 of file LoopVectorize.cpp.

References LVer.

Referenced by addMetadata(), and scalarizeInstruction().

◆ areSafetyChecksAdded()

bool llvm::InnerLoopVectorizer::areSafetyChecksAdded ( )

Definition at line 478 of file LoopVectorize.cpp.

References AddedSafetyChecks.

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

◆ clearReductionWrapFlags()

void InnerLoopVectorizer::clearReductionWrapFlags ( VPReductionPHIRecipe PhiR,
VPTransformState State 

◆ collectPoisonGeneratingRecipes()

void InnerLoopVectorizer::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.

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 1057 of file LoopVectorize.cpp.

References llvm::LoopVectorizationLegality::blockNeedsPredication(), llvm::depth_first(), llvm::VPlan::getEntry(), llvm::InterleaveGroup< InstTy >::getMember(), llvm::InterleaveGroup< InstTy >::getNumMembers(), llvm::Instruction::getParent(), I, Legal, and llvm::VPTransformState::Plan.

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

◆ completeLoopSkeleton()

BasicBlock * InnerLoopVectorizer::completeLoopSkeleton ( MDNode OrigLoopID)

◆ createBitOrPointerCast()

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

Returns a bitcasted value to the requested vector type.

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

Definition at line 2909 of file LoopVectorize.cpp.

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

Referenced by vectorizeInterleaveGroup().

◆ createInductionResumeValues()

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

◆ createVectorizedLoopSkeleton()

std::pair< BasicBlock *, Value * > InnerLoopVectorizer::createVectorizedLoopSkeleton ( )

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.

Reimplemented in llvm::InnerLoopAndEpilogueVectorizer.

Definition at line 3231 of file LoopVectorize.cpp.

References completeLoopSkeleton(), createInductionResumeValues(), createVectorLoopSkeleton(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), emitMemRuntimeChecks(), emitSCEVChecks(), llvm::Loop::getLoopID(), llvm::LoopBase< BlockT, LoopT >::getLoopPreheader(), getOrCreateTripCount(), LoopScalarPreHeader, and OrigLoop.

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

◆ createVectorLoopSkeleton()

void InnerLoopVectorizer::createVectorLoopSkeleton ( StringRef  Prefix)

◆ emitIterationCountCheck()

void InnerLoopVectorizer::emitIterationCountCheck ( BasicBlock Bypass)

◆ emitMemRuntimeChecks()

BasicBlock * InnerLoopVectorizer::emitMemRuntimeChecks ( BasicBlock Bypass)

◆ emitSCEVChecks()

BasicBlock * InnerLoopVectorizer::emitSCEVChecks ( BasicBlock Bypass)

◆ fixCrossIterationPHIs()

void InnerLoopVectorizer::fixCrossIterationPHIs ( VPTransformState State)

◆ fixFirstOrderRecurrence()

void InnerLoopVectorizer::fixFirstOrderRecurrence ( VPFirstOrderRecurrencePHIRecipe PhiR,
VPTransformState State 

◆ fixNonInductionPHIs()

void InnerLoopVectorizer::fixNonInductionPHIs ( VPlan Plan,
VPTransformState State 

◆ fixReduction()

void InnerLoopVectorizer::fixReduction ( VPReductionPHIRecipe Phi,
VPTransformState State 

Create code for the loop exit value of the reduction.

Definition at line 3852 of file LoopVectorize.cpp.

References llvm::PHINode::addIncoming(), assert(), llvm::PHINode::blocks(), Builder, llvm::VPTransformState::CFG, clearReductionWrapFlags(), Cost, llvm::PHINode::Create(), llvm::IRBuilderBase::CreateBinOp(), llvm::createMinMaxOp(), llvm::createSelectCmpOp(), llvm::IRBuilderBase::CreateSExt(), llvm::IRBuilderBase::CreateStore(), llvm::createTargetReduction(), llvm::IRBuilderBase::CreateTrunc(), llvm::IRBuilderBase::CreateZExt(), llvm::LoopVectorizationCostModel::foldTailByMasking(), llvm::VPTransformState::get(), llvm::VectorType::get(), llvm::VPHeaderPHIRecipe::getBackedgeValue(), llvm::PHINode::getBasicBlockIndex(), 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(), llvm::RecurrenceDescriptor::IntermediateStore, llvm::is_contained(), llvm::VPReductionPHIRecipe::isInLoop(), llvm::VPReductionPHIRecipe::isOrdered(), llvm::LoopVectorizationLegality::isReductionVariable(), llvm::RecurrenceDescriptor::isSelectCmpRecurrenceKind(), 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::LoopVectorizationCostModel::requiresScalarEpilogue(), llvm::VPTransformState::reset(), setDebugLocFromInst(), llvm::IRBuilderBase::setFastMathFlags(), llvm::Instruction::setFastMathFlags(), llvm::PHINode::setIncomingValue(), llvm::IRBuilderBase::SetInsertPoint(), SI, UF, users, llvm::Value::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 

◆ fixVectorizedLoop()

void InnerLoopVectorizer::fixVectorizedLoop ( VPTransformState State,
VPlan Plan 

◆ getBroadcastInstrs()

Value * InnerLoopVectorizer::getBroadcastInstrs ( Value V)

Create a broadcast instruction.

This method generates a broadcast instruction (shuffle) for loop invariant values and for the induction value. If this is the induction variable then we extend it to N, N+1, ... this is needed because each iteration in the loop corresponds to a SIMD element.

Definition at line 2258 of file LoopVectorize.cpp.

References Builder, llvm::IRBuilderBase::CreateVectorSplat(), llvm::DominatorTree::dominates(), DT, llvm::Instruction::getParent(), llvm::BasicBlock::getTerminator(), llvm::Loop::isLoopInvariant(), LoopVectorPreHeader, OrigLoop, llvm::IRBuilderBase::SetInsertPoint(), and VF.

◆ getOrCreateTripCount()

Value * InnerLoopVectorizer::getOrCreateTripCount ( BasicBlock InsertBlock)

◆ getOrCreateVectorTripCount()

Value * InnerLoopVectorizer::getOrCreateVectorTripCount ( BasicBlock InsertBlock)

◆ getReductionResumeValue()

PHINode * InnerLoopVectorizer::getReductionResumeValue ( const RecurrenceDescriptor RdxDesc)

Definition at line 1151 of file LoopVectorize.cpp.

References assert(), and ReductionResumeValues.

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

◆ packScalarIntoVectorValue()

void InnerLoopVectorizer::packScalarIntoVectorValue ( VPValue Def,
const VPIteration Instance,
VPTransformState State 

◆ printDebugTracesAtEnd()

virtual void llvm::InnerLoopVectorizer::printDebugTracesAtEnd ( )

◆ printDebugTracesAtStart()

virtual void llvm::InnerLoopVectorizer::printDebugTracesAtStart ( )

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

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

Definition at line 645 of file LoopVectorize.cpp.

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

◆ scalarizeInstruction()

void InnerLoopVectorizer::scalarizeInstruction ( Instruction Instr,
VPReplicateRecipe RepRecipe,
const VPIteration Instance,
bool  IfPredicateInstr,
VPTransformState State 

◆ setDebugLocFromInst()

void InnerLoopVectorizer::setDebugLocFromInst ( const Value V)

◆ sinkScalarOperands()

void InnerLoopVectorizer::sinkScalarOperands ( Instruction PredInst)

◆ truncateToMinimalBitwidths()

void InnerLoopVectorizer::truncateToMinimalBitwidths ( VPTransformState State)

◆ 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 4178 of file LoopVectorize.cpp.

References Cost, and llvm::LoopVectorizationCostModel::useOrderedReductions().

Referenced by llvm::LoopVectorizationCostModel::collectElementTypesForWidening(), llvm::LoopVectorizationCostModel::collectInLoopReductions(), and llvm::VPReductionRecipe::execute().

◆ vectorizeInterleaveGroup()

void InnerLoopVectorizer::vectorizeInterleaveGroup ( const InterleaveGroup< Instruction > *  Group,
ArrayRef< VPValue * >  VPDefs,
VPTransformState State,
VPValue Addr,
ArrayRef< VPValue * >  StoredValues,
VPValue BlockInMask = nullptr 

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 2553 of file LoopVectorize.cpp.

References llvm::InterleaveGroup< InstTy >::addMetadata(), Addr, assert(), Builder, llvm::concatenateVectors(), Cost, llvm::IRBuilderBase::CreateAlignedLoad(), llvm::IRBuilderBase::CreateAlignedStore(), llvm::IRBuilderBase::CreateBinOp(), llvm::IRBuilderBase::CreateBitCast(), llvm::createBitMaskForGaps(), createBitOrPointerCast(), llvm::IRBuilderBase::CreateGEP(), llvm::createInterleaveMask(), llvm::IRBuilderBase::CreateMaskedLoad(), llvm::IRBuilderBase::CreateMaskedStore(), llvm::createReplicatedMask(), llvm::IRBuilderBase::CreateShuffleVector(), llvm::createStrideMask(), llvm::IRBuilderBase::CreateVectorReverse(), DL, gep, llvm::VPTransformState::get(), llvm::VectorType::get(), llvm::PoisonValue::get(), llvm::InterleaveGroup< InstTy >::getAlign(), llvm::Module::getDataLayout(), llvm::InterleaveGroup< InstTy >::getFactor(), llvm::InterleaveGroup< InstTy >::getIndex(), llvm::InterleaveGroup< InstTy >::getInsertPos(), llvm::IRBuilderBase::getInt32(), llvm::LinearPolySize< LeafTy >::getKnownMinValue(), llvm::getLoadStoreType(), llvm::InterleaveGroup< InstTy >::getMember(), llvm::Instruction::getModule(), llvm::Type::getPointerAddressSpace(), llvm::Type::getPointerTo(), llvm::Value::getType(), i, I, llvm::InterleaveGroup< InstTy >::isReverse(), llvm::LinearPolySize< LeafTy >::isScalable(), llvm::LoopVectorizationCostModel::isScalarEpilogueAllowed(), llvm::InterleaveGroup< InstTy >::requiresScalarEpilogue(), llvm::VPTransformState::set(), setDebugLocFromInst(), llvm::Value::stripPointerCasts(), UF, llvm::RegState::Undef, useMaskedInterleavedAccesses(), and VF.

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

◆ widenCallInstruction()

void InnerLoopVectorizer::widenCallInstruction ( CallInst I,
VPValue Def,
VPUser ArgOperands,
VPTransformState State 

Friends And Related Function Documentation

◆ LoopVectorizationPlanner

friend class LoopVectorizationPlanner

Definition at line 542 of file LoopVectorize.cpp.

Member Data Documentation

◆ AA

AAResults* llvm::InnerLoopVectorizer::AA

Alias Analysis.

Definition at line 663 of file LoopVectorize.cpp.

◆ AC

AssumptionCache* llvm::InnerLoopVectorizer::AC

◆ AddedSafetyChecks

bool llvm::InnerLoopVectorizer::AddedSafetyChecks = false

Definition at line 732 of file LoopVectorize.cpp.

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


BlockFrequencyInfo* llvm::InnerLoopVectorizer::BFI

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

Definition at line 739 of file LoopVectorize.cpp.

Referenced by getScalarEpilogueLowering(), InnerLoopVectorizer(), and processLoopInVPlanNativePath().

◆ Builder

IRBuilder llvm::InnerLoopVectorizer::Builder

◆ Cost

LoopVectorizationCostModel* llvm::InnerLoopVectorizer::Cost

◆ DT

DominatorTree* llvm::InnerLoopVectorizer::DT

◆ IVEndValues

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

Definition at line 736 of file LoopVectorize.cpp.

Referenced by createInductionResumeValues().

◆ Legal

LoopVectorizationLegality* llvm::InnerLoopVectorizer::Legal

◆ LI

LoopInfo* llvm::InnerLoopVectorizer::LI

◆ LoopBypassBlocks

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

◆ LoopExitBlock

BasicBlock* llvm::InnerLoopVectorizer::LoopExitBlock

The unique ExitBlock of the scalar loop if one exists.

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

Definition at line 708 of file LoopVectorize.cpp.

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

◆ LoopMiddleBlock

BasicBlock* llvm::InnerLoopVectorizer::LoopMiddleBlock

Middle Block between the vector and the scalar.

Definition at line 704 of file LoopVectorize.cpp.

Referenced by completeLoopSkeleton(), createInductionResumeValues(), createVectorLoopSkeleton(), fixFirstOrderRecurrence(), and fixReduction().

◆ LoopScalarBody

BasicBlock* llvm::InnerLoopVectorizer::LoopScalarBody

The scalar loop body.

Definition at line 711 of file LoopVectorize.cpp.

Referenced by createVectorLoopSkeleton().

◆ LoopScalarPreHeader

BasicBlock* llvm::InnerLoopVectorizer::LoopScalarPreHeader

◆ LoopVectorPreHeader

BasicBlock* llvm::InnerLoopVectorizer::LoopVectorPreHeader

◆ LVer

std::unique_ptr<LoopVersioning> llvm::InnerLoopVectorizer::LVer


It's only set up (non-null) if memchecks were used.

This is currently only used to add no-alias metadata based on the memchecks. The actually versioning is performed manually.

Definition at line 682 of file LoopVectorize.cpp.

Referenced by addNewMetadata(), and emitMemRuntimeChecks().

◆ OptForSizeBasedOnProfile

bool llvm::InnerLoopVectorizer::OptForSizeBasedOnProfile

Definition at line 744 of file LoopVectorize.cpp.

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


OptimizationRemarkEmitter* llvm::InnerLoopVectorizer::ORE

◆ OrigLoop

Loop* llvm::InnerLoopVectorizer::OrigLoop

◆ PredicatedInstructions

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

Store instructions that were predicated.

Definition at line 717 of file LoopVectorize.cpp.

Referenced by scalarizeInstruction().


PredicatedScalarEvolution& llvm::InnerLoopVectorizer::PSE


ProfileSummaryInfo* llvm::InnerLoopVectorizer::PSI

◆ ReductionResumeValues

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

Definition at line 753 of file LoopVectorize.cpp.

Referenced by fixReduction(), and getReductionResumeValue().

◆ RTChecks

GeneratedRTChecks& llvm::InnerLoopVectorizer::RTChecks

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

Definition at line 748 of file LoopVectorize.cpp.

Referenced by emitMemRuntimeChecks(), and emitSCEVChecks().


const TargetLibraryInfo* llvm::InnerLoopVectorizer::TLI

◆ TripCount

Value* llvm::InnerLoopVectorizer::TripCount = nullptr

Trip count of the original loop.

Definition at line 720 of file LoopVectorize.cpp.

Referenced by llvm::EpilogueVectorizerEpilogueLoop::EpilogueVectorizerEpilogueLoop(), and getOrCreateTripCount().


const TargetTransformInfo* llvm::InnerLoopVectorizer::TTI

Target Transform Info.

Definition at line 669 of file LoopVectorize.cpp.

Referenced by llvm::LoopVectorizationCostModel::calculateRegisterUsage().

◆ UF

unsigned llvm::InnerLoopVectorizer::UF

◆ VectorTripCount

Value* llvm::InnerLoopVectorizer::VectorTripCount = nullptr

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

Definition at line 723 of file LoopVectorize.cpp.

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

◆ VF

ElementCount llvm::InnerLoopVectorizer::VF

The vectorization SIMD factor to use.

Each vector will have this many vector elements.

Definition at line 686 of file LoopVectorize.cpp.

Referenced by llvm::LoopVectorizationPlanner::buildVPlans(), llvm::LoopVectorizationCostModel::calculateRegisterUsage(), llvm::LoopVectorizationCostModel::canTruncateToMinimalBitwidth(), llvm::LoopVectorizationCostModel::collectInstsToScalarize(), llvm::LoopVectorizationCostModel::collectUniformsAndScalars(), completeLoopSkeleton(), GeneratedRTChecks::Create(), createBitOrPointerCast(), llvm::createStepForVF(), createVectorLoopSkeleton(), createWidenInductionRecipes(), emitIterationCountCheck(), llvm::EpilogueVectorizerMainLoop::emitIterationCountCheck(), emitSCEVChecks(), fixFirstOrderRecurrence(), fixReduction(), fixVectorizedLoop(), llvm::VPTransformState::get(), llvm::LoopVectorizationPlanner::getBestPlanFor(), getBroadcastInstrs(), getOrCreateVectorTripCount(), llvm::getRuntimeVF(), llvm::getRuntimeVFAsFloat(), getStepVector(), llvm::LoopVectorizationCostModel::getVectorCallCost(), llvm::LoopVectorizationCostModel::getVectorIntrinsicCost(), llvm::LoopVectorizationCostModel::getWideningCost(), llvm::LoopVectorizationCostModel::getWideningDecision(), llvm::VPRecipeBuilder::handleReplication(), llvm::LoopVectorizationCostModel::interleavedAccessCanBeWidened(), llvm::LoopVectorizationCostModel::isLegalGatherOrScatter(), llvm::LoopVectorizationCostModel::isOptimizableIVTruncate(), llvm::LoopVectorizationCostModel::isPredicatedInst(), llvm::LoopVectorizationCostModel::isProfitableToScalarize(), llvm::LoopVectorizationCostModel::isScalarAfterVectorization(), llvm::LoopVectorizationCostModel::isScalarWithPredication(), llvm::LoopVectorizationCostModel::isUniformAfterVectorization(), MaybeVectorizeType(), llvm::LoopVectorizationCostModel::memoryInstructionCanBeWidened(), packScalarIntoVectorValue(), llvm::LoopVectorizationPlanner::plan(), llvm::LoopVectorizationPlanner::planInVPlanNativePath(), processLoopInVPlanNativePath(), llvm::LoopVectorizationCostModel::requiresScalarEpilogue(), llvm::LoopVectorizationCostModel::selectInterleaveCount(), llvm::LoopVectorizationCostModel::setCostBasedWideningDecision(), setDebugLocFromInst(), llvm::LoopVectorizationCostModel::setWideningDecision(), llvm::VPRecipeBuilder::tryToCreateWidenRecipe(), vectorizeInterleaveGroup(), and widenCallInstruction().

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