slpvectorizer::BoUpSLP::ShuffleCostEstimator Class Reference

Merges shuffle masks and emits final shuffle instruction, if required. More...

Inheritance diagram for slpvectorizer::BoUpSLP::ShuffleCostEstimator:

Public Member Functions
	ShuffleCostEstimator (Type *ScalarTy, TargetTransformInfo &TTI, ArrayRef< Value * > VectorizedVals, BoUpSLP &R, SmallPtrSetImpl< Value * > &CheckedExtracts)
Value *	adjustExtracts (const TreeEntry *E, MutableArrayRef< int > Mask, ArrayRef< std::optional< TTI::ShuffleKind > > ShuffleKinds, unsigned NumParts, bool &UseVecBaseAsInput)
std::optional< InstructionCost >	needToDelay (const TreeEntry *, ArrayRef< SmallVector< const TreeEntry * > >) const
	Checks if the specified entry E needs to be delayed because of its dependency nodes.
void	resetForSameNode ()
	Reset the builder to handle perfect diamond match.
void	add (const TreeEntry &E1, const TreeEntry &E2, ArrayRef< int > Mask)
void	add (const TreeEntry &E1, ArrayRef< int > Mask)
void	add (Value *V1, Value *V2, ArrayRef< int > Mask)
	Adds 2 input vectors and the mask for their shuffling.
void	add (Value *V1, ArrayRef< int > Mask, bool ForExtracts=false)
	Adds another one input vector and the mask for the shuffling.
Value *	gather (ArrayRef< Value * > VL, unsigned MaskVF=0, Value *Root=nullptr)
InstructionCost	createFreeze (InstructionCost Cost)
InstructionCost	finalize (ArrayRef< int > ExtMask, ArrayRef< std::pair< const TreeEntry *, unsigned > > SubVectors, ArrayRef< int > SubVectorsMask, unsigned VF=0, function_ref< void(Value *&, SmallVectorImpl< int > &, function_ref< Value *(Value *, Value *, ArrayRef< int >)>)> Action={})
	Finalize emission of the shuffles.
	~ShuffleCostEstimator ()

Detailed Description

Merges shuffle masks and emits final shuffle instruction, if required.

It supports shuffling of 2 input vectors. It implements lazy shuffles emission, when the actual shuffle instruction is generated only if this is actually required. Otherwise, the shuffle instruction emission is delayed till the end of the process, to reduce the number of emitted instructions and further analysis/transformations.

Definition at line 14721 of file SLPVectorizer.cpp.

Constructor & Destructor Documentation

ShuffleCostEstimator()

slpvectorizer::BoUpSLP::ShuffleCostEstimator::ShuffleCostEstimator ( Type * ScalarTy, TargetTransformInfo & TTI, ArrayRef< Value * > VectorizedVals, BoUpSLP & R, SmallPtrSetImpl< Value * > & CheckedExtracts )

inline

Definition at line 15253 of file SLPVectorizer.cpp.

References slpvectorizer::BoUpSLP::BoUpSLP().

~ShuffleCostEstimator()

slpvectorizer::BoUpSLP::ShuffleCostEstimator::~ShuffleCostEstimator ( )

inline

Definition at line 15640 of file SLPVectorizer.cpp.

References assert().

Member Function Documentation

add() [1/4]

void slpvectorizer::BoUpSLP::ShuffleCostEstimator::add ( const TreeEntry & E1, ArrayRef< int > Mask )

inline

Definition at line 15421 of file SLPVectorizer.cpp.

References assert(), llvm::find_if(), getNumberOfParts(), getPartNumElems(), getWidenedType(), llvm::not_equal_to(), and llvm::PoisonMaskElem.

add() [2/4]

void slpvectorizer::BoUpSLP::ShuffleCostEstimator::add ( const TreeEntry & E1, const TreeEntry & E2, ArrayRef< int > Mask )

inline

Definition at line 15398 of file SLPVectorizer.cpp.

References add(), llvm::all_of(), assert(), llvm::find_if(), getNumberOfParts(), getPartNumElems(), getWidenedType(), llvm::not_equal_to(), and llvm::PoisonMaskElem.

Referenced by add().

add() [3/4]

void slpvectorizer::BoUpSLP::ShuffleCostEstimator::add ( Value * V1, ArrayRef< int > Mask, bool ForExtracts = false )

inline

Adds another one input vector and the mask for the shuffling.

Definition at line 15455 of file SLPVectorizer.cpp.

References llvm::all_of(), assert(), llvm::cast(), llvm::enumerate(), llvm::isa(), P, and llvm::PoisonMaskElem.

add() [4/4]

void slpvectorizer::BoUpSLP::ShuffleCostEstimator::add ( Value * V1, Value * V2, ArrayRef< int > Mask )

inline

Adds 2 input vectors and the mask for their shuffling.

Definition at line 15438 of file SLPVectorizer.cpp.

References llvm::all_of(), assert(), llvm::cast(), llvm::enumerate(), P, and llvm::PoisonMaskElem.

adjustExtracts()

Value * slpvectorizer::BoUpSLP::ShuffleCostEstimator::adjustExtracts ( const TreeEntry * E, MutableArrayRef< int > Mask, ArrayRef< std::optional< TTI::ShuffleKind > > ShuffleKinds, unsigned NumParts, bool & UseVecBaseAsInput )

inline

Definition at line 15259 of file SLPVectorizer.cpp.

References llvm::any_of(), llvm::ArrayRef(), and reorderScalars().

createFreeze()

InstructionCost slpvectorizer::BoUpSLP::ShuffleCostEstimator::createFreeze ( InstructionCost Cost )

inline

Definition at line 15537 of file SLPVectorizer.cpp.

finalize()

InstructionCost slpvectorizer::BoUpSLP::ShuffleCostEstimator::finalize ( ArrayRef< int > ExtMask, ArrayRef< std::pair< const TreeEntry *, unsigned > > SubVectors, ArrayRef< int > SubVectorsMask, unsigned VF = 0, function_ref< void(Value *&, SmallVectorImpl< int > &, function_ref< Value *(Value *, Value *, ArrayRef< int >)>)> Action = {} )

inline

Finalize emission of the shuffles.

Definition at line 15539 of file SLPVectorizer.cpp.

gather()

Value * slpvectorizer::BoUpSLP::ShuffleCostEstimator::gather ( ArrayRef< Value * > VL, unsigned MaskVF = 0, Value * Root = nullptr )

inline

Definition at line 15502 of file SLPVectorizer.cpp.

References assert(), llvm::cast(), llvm::dyn_cast(), llvm::ArrayRef< T >::front(), llvm::ConstantVector::get(), llvm::PoisonValue::get(), llvm::UndefValue::get(), llvm::ElementCount::getFixed(), llvm::Constant::getNullValue(), llvm::Type::getScalarType(), llvm::ConstantVector::getSplat(), llvm::Value::getType(), llvm::isa(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), replicateMask(), llvm::ArrayRef< T >::size(), SLPReVec, and llvm::ArrayRef< T >::take_front().

needToDelay()

std::optional< InstructionCost > slpvectorizer::BoUpSLP::ShuffleCostEstimator::needToDelay ( const TreeEntry * , ArrayRef< SmallVector< const TreeEntry * > >  ) const

inline

Checks if the specified entry E needs to be delayed because of its dependency nodes.

Definition at line 15384 of file SLPVectorizer.cpp.

resetForSameNode()

void slpvectorizer::BoUpSLP::ShuffleCostEstimator::resetForSameNode ( )

inline

Reset the builder to handle perfect diamond match.

Definition at line 15390 of file SLPVectorizer.cpp.

---

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

• lib/Transforms/Vectorize/SLPVectorizer.cpp