#include "llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h"

Classes
class	LaneValueEnumerator
	Iterate over all lanes and Value pairs. More...
struct	PackPattern
	Helper struct for matchPack(). More...

Static Public Member Functions
static int	getNumElements (Type *Ty)
	\Returns the number of elements in `Ty`.
static Type *	getElementType (Type *Ty)
	Returns `Ty` if scalar or its element type if vector.
template<typename LoadOrStoreT>
static bool	areConsecutive (LoadOrStoreT I1, LoadOrStoreT I2, ScalarEvolution &SE, const DataLayout &DL)
	\Returns true if `I1` and `I2` are load/stores accessing consecutive memory addresses.
template<typename LoadOrStoreT>
static bool	areConsecutive (ArrayRef< Value * > &Bndl, ScalarEvolution &SE, const DataLayout &DL)
static unsigned	getNumLanes (Type *Ty)
	\Returns the number of vector lanes of `Ty` or 1 if not a vector.
static unsigned	getNumLanes (Value *V)
	\Returns the expected vector lanes of `V` or 1 if not a vector.
static unsigned	getNumLanes (ArrayRef< Value * > Bndl)
	\Returns the total number of lanes across all values in `Bndl`.
static Type *	getWideType (Type *ElemTy, unsigned NumElts)
	\Returns <NumElts x ElemTy>.
static Instruction *	getLowest (ArrayRef< Instruction * > Instrs)
	\Returns the instruction in `Instrs` that is lowest in the BB.
static Instruction *	getLowest (ArrayRef< Value * > Vals, BasicBlock *BB)
	\Returns the lowest instruction in `Vals`, or nullptr if no instructions are found.
static Instruction *	getLastPHIOrSelf (Instruction *I)
	If `I` is not a PHI it returns it.
static Type *	tryGetCommonScalarType (ArrayRef< Value * > Bndl)
	If all values in `Bndl` are of the same scalar type then return it, otherwise return nullptr.
static Type *	getCommonScalarType (ArrayRef< Value * > Bndl)
	Similar to tryGetCommonScalarType() but will assert that there is a common type.
static LLVM_ABI unsigned	getFloorPowerOf2 (unsigned Num)
	\Returns the first integer power of 2 that is <= Num.
static std::optional< PackPattern >	matchPack (Instruction *I)
	If `I` is the last instruction of a pack pattern (i.e., an InsertElement into a vector), then this function returns the instructions in the pack and the operands in the pack, else returns nullopt.
static Value *	unpack (Value FromVec, Type ExtrTy, unsigned Lane, BasicBlock::iterator WhereIt)
	Emits the necessary instruction sequence to extract element of type `ExtrTy` at `Lane` from `FromVec`.
template<typename ValueContainerT>
static auto	enumerateLanes (const ValueContainerT &Range)
	Helper for creating LaneValueEnumerator ranges.
static LLVM_DUMP_METHOD void	dump (ArrayRef< Value * > Bndl)
	Helper dump function for debugging.
static LLVM_DUMP_METHOD void	dump (ArrayRef< Instruction * > Bndl)

Detailed Description

Definition at line 42 of file VecUtils.h.

Member Function Documentation

◆ areConsecutive() [1/2]

template<typename LoadOrStoreT>

bool llvm::sandboxir::VecUtils::areConsecutive	(	ArrayRef< Value * > &	Bndl,
		ScalarEvolution &	SE,
		const DataLayout &	DL )

inlinestatic

Definition at line 72 of file VecUtils.h.

References areConsecutive(), assert(), llvm::cast(), DL, llvm::drop_begin(), and llvm::isa().

◆ areConsecutive() [2/2]

template<typename LoadOrStoreT>

bool llvm::sandboxir::VecUtils::areConsecutive	(	LoadOrStoreT *	I1,
		LoadOrStoreT *	I2,
		ScalarEvolution &	SE,
		const DataLayout &	DL )

inlinestatic

\Returns true if I1 and I2 are load/stores accessing consecutive memory addresses.

Definition at line 59 of file VecUtils.h.

References DL, llvm::sandboxir::Utils::getNumBits(), and llvm::sandboxir::Utils::getPointerDiffInBytes().

Referenced by areConsecutive().

◆ dump() [1/2]

void llvm::sandboxir::VecUtils::dump ( ArrayRef< Instruction * > Bndl )

static

Definition at line 29 of file VecUtils.cpp.

References llvm::sandboxir::dumpImpl().

◆ dump() [2/2]

void llvm::sandboxir::VecUtils::dump ( ArrayRef< Value * > Bndl )

static

Helper dump function for debugging.

Definition at line 28 of file VecUtils.cpp.

References llvm::sandboxir::dumpImpl().

◆ enumerateLanes()

template<typename ValueContainerT>

auto llvm::sandboxir::VecUtils::enumerateLanes ( const ValueContainerT & Range )

inlinestatic

Helper for creating LaneValueEnumerator ranges.

Can be used in for loops like: for (auto [Lane, V] : enumerateLanes(Range))

Definition at line 357 of file VecUtils.h.

References llvm::make_range(), and Range.

◆ getCommonScalarType()

Type * llvm::sandboxir::VecUtils::getCommonScalarType ( ArrayRef< Value * > Bndl )

inlinestatic

Similar to tryGetCommonScalarType() but will assert that there is a common type.

So this is faster in release builds as it won't iterate through the values.

Definition at line 192 of file VecUtils.h.

References assert(), getElementType(), llvm::sandboxir::Utils::getExpectedType(), and tryGetCommonScalarType().

◆ getElementType()

Type * llvm::sandboxir::VecUtils::getElementType ( Type * Ty )

inlinestatic

Returns Ty if scalar or its element type if vector.

Definition at line 52 of file VecUtils.h.

References llvm::cast(), and llvm::sandboxir::Type::isVectorTy().

Referenced by getCommonScalarType(), llvm::sandboxir::SeedCollection::runOnFunction(), and tryGetCommonScalarType().

◆ getFloorPowerOf2()

unsigned llvm::sandboxir::VecUtils::getFloorPowerOf2 ( unsigned Num )

static

\Returns the first integer power of 2 that is <= Num.

Definition at line 13 of file VecUtils.cpp.

Referenced by llvm::sandboxir::SeedCollection::runOnFunction().

◆ getLastPHIOrSelf()

Instruction * llvm::sandboxir::VecUtils::getLastPHIOrSelf ( Instruction * I )

inlinestatic

If I is not a PHI it returns it.

Else it walks down the instruction chain looking for the last PHI and returns it. \Returns nullptr if I is nullptr.

Definition at line 165 of file VecUtils.h.

References I, and llvm::isa().

Referenced by llvm::sandboxir::getInsertPointAfterInstrs().

◆ getLowest() [1/2]

Instruction * llvm::sandboxir::VecUtils::getLowest ( ArrayRef< Instruction * > Instrs )

inlinestatic

\Returns the instruction in Instrs that is lowest in the BB.

Expects that all instructions are in the same BB.

Definition at line 125 of file VecUtils.h.

References llvm::sandboxir::Instruction::comesBefore(), llvm::drop_begin(), llvm::ArrayRef< T >::front(), and I.

Referenced by llvm::sandboxir::getInsertPointAfterInstrs(), and llvm::sandboxir::Scheduler::trySchedule().

◆ getLowest() [2/2]

Instruction * llvm::sandboxir::VecUtils::getLowest	(	ArrayRef< Value * >	Vals,
		BasicBlock *	BB )

inlinestatic

\Returns the lowest instruction in Vals, or nullptr if no instructions are found.

Skips instructions not in BB.

Definition at line 135 of file VecUtils.h.

References llvm::sandboxir::BasicBlock(), llvm::cast(), llvm::sandboxir::Instruction::comesBefore(), llvm::dyn_cast(), llvm::ArrayRef< T >::end(), llvm::find_if(), I, llvm::isa(), and llvm::make_range().

◆ getNumElements()

int llvm::sandboxir::VecUtils::getNumElements ( Type * Ty )

inlinestatic

\Returns the number of elements in Ty.

That is the number of lanes if a fixed vector or 1 if scalar. ScalableVectors have unknown size and therefore are unsupported.

Definition at line 47 of file VecUtils.h.

References assert(), llvm::cast(), and llvm::isa().

◆ getNumLanes() [1/3]

unsigned llvm::sandboxir::VecUtils::getNumLanes ( ArrayRef< Value * > Bndl )

inlinestatic

\Returns the total number of lanes across all values in Bndl.

Definition at line 106 of file VecUtils.h.

References getNumLanes().

◆ getNumLanes() [2/3]

unsigned llvm::sandboxir::VecUtils::getNumLanes ( Type * Ty )

inlinestatic

\Returns the number of vector lanes of Ty or 1 if not a vector.

NOTE: It asserts that Ty is a fixed vector type.

Definition at line 92 of file VecUtils.h.

References assert(), llvm::dyn_cast(), and llvm::isa().

Referenced by getNumLanes(), getNumLanes(), matchPack(), and llvm::sandboxir::InstrMaps::registerVector().

◆ getNumLanes() [3/3]

unsigned llvm::sandboxir::VecUtils::getNumLanes ( Value * V )

inlinestatic

\Returns the expected vector lanes of V or 1 if not a vector.

NOTE: It asserts that V is a fixed vector.

Definition at line 101 of file VecUtils.h.

References llvm::sandboxir::Utils::getExpectedType(), and getNumLanes().

◆ getWideType()

Type * llvm::sandboxir::VecUtils::getWideType	(	Type *	ElemTy,
		unsigned	NumElts )

inlinestatic

\Returns <NumElts x ElemTy>.

It works for both scalar and vector ElemTy.

Definition at line 115 of file VecUtils.h.

References llvm::cast(), and llvm::sandboxir::FixedVectorType::get().

◆ matchPack()

std::optional< PackPattern > llvm::sandboxir::VecUtils::matchPack ( Instruction * I )

inlinestatic

If I is the last instruction of a pack pattern (i.e., an InsertElement into a vector), then this function returns the instructions in the pack and the operands in the pack, else returns nullopt.

Here is an example of a matched pattern: PackA0 = insertelement <2 x i8> poison, i8 v0, i64 0 PackA1 = insertelement <2 x i8> PackA0, i8 v1, i64 1 TODO: this currently detects only simple canonicalized patterns.

Definition at line 227 of file VecUtils.h.

References assert(), llvm::dyn_cast(), getNumLanes(), llvm::sandboxir::User::getOperand(), llvm::sandboxir::Instruction::getParent(), I, llvm::isa(), llvm::reverse(), and llvm::seq().

Referenced by llvm::sandboxir::PackReuse::runOnRegion().

◆ tryGetCommonScalarType()

Type * llvm::sandboxir::VecUtils::tryGetCommonScalarType ( ArrayRef< Value * > Bndl )

inlinestatic

If all values in Bndl are of the same scalar type then return it, otherwise return nullptr.

Definition at line 176 of file VecUtils.h.

References llvm::drop_begin(), getElementType(), and llvm::sandboxir::Utils::getExpectedType().

Referenced by getCommonScalarType().

◆ unpack()

Value * llvm::sandboxir::VecUtils::unpack	(	Value *	FromVec,
		Type *	ExtrTy,
		unsigned	Lane,
		BasicBlock::iterator	WhereIt )

inlinestatic

Emits the necessary instruction sequence to extract element of type ExtrTy at Lane from FromVec.

Emits instructions before WhereIt. Returns the extracted value. Note: This handles both vectors and scalars. In the vector case it extracts an N-wide element (with N dictated by ExtrTy).

Definition at line 271 of file VecUtils.h.

References assert(), llvm::cast(), llvm::sandboxir::ExtractElementInst::create(), llvm::sandboxir::ShuffleVectorInst::create(), E(), llvm::sandboxir::PoisonValue::get(), llvm::sandboxir::Value::getContext(), llvm::sandboxir::Type::getInt32Ty(), llvm::sandboxir::ConstantInt::getSigned(), llvm::sandboxir::Value::getType(), llvm::isa(), and llvm::sandboxir::Type::isVectorTy().

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

include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h
lib/Transforms/Vectorize/SandboxVectorizer/VecUtils.cpp

Classes

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ areConsecutive() [1/2]

◆ areConsecutive() [2/2]

◆ dump() [1/2]

◆ dump() [2/2]

◆ enumerateLanes()

◆ getCommonScalarType()

◆ getElementType()

◆ getFloorPowerOf2()

◆ getLastPHIOrSelf()

◆ getLowest() [1/2]

◆ getLowest() [2/2]

◆ getNumElements()

◆ getNumLanes() [1/3]

◆ getNumLanes() [2/3]

◆ getNumLanes() [3/3]

◆ getWideType()

◆ matchPack()

◆ tryGetCommonScalarType()

◆ unpack()