The group of interleaved loads/stores sharing the same stride and close to each other. More...

#include "llvm/Analysis/VectorUtils.h"

Inheritance diagram for llvm::InterleaveGroup< InstTy >:

Public Member Functions
	InterleaveGroup (uint32_t Factor, bool Reverse, Align Alignment)

	InterleaveGroup (InstTy *Instr, int32_t Stride, Align Alignment)

bool	isReverse () const

uint32_t	getFactor () const

Align	getAlign () const

uint32_t	getNumMembers () const

bool	insertMember (InstTy *Instr, int32_t Index, Align NewAlign)
	Try to insert a new member `Instr` with index `Index` and alignment `NewAlign`.

InstTy *	getMember (uint32_t Index) const
	Get the member with the given index `Index`.

uint32_t	getIndex (const InstTy *Instr) const
	Get the index for the given member.

InstTy *	getInsertPos () const

void	setInsertPos (InstTy *Inst)

void	addMetadata (InstTy *NewInst) const
	Add metadata (e.g.

bool	requiresScalarEpilogue () const
	Returns true if this Group requires a scalar iteration to handle gaps.

void	addMetadata (Instruction *NewInst) const

Detailed Description

template<typename InstTy>
class llvm::InterleaveGroup< InstTy >

The group of interleaved loads/stores sharing the same stride and close to each other.

Each member in this group has an index starting from 0, and the largest index should be less than interleaved factor, which is equal to the absolute value of the access's stride.

E.g. An interleaved load group of factor 4: for (unsigned i = 0; i < 1024; i+=4) { a = A[i]; // Member of index 0 b = A[i+1]; // Member of index 1 d = A[i+3]; // Member of index 3 ... }

An interleaved store group of factor 4: for (unsigned i = 0; i < 1024; i+=4) { ... A[i] = a; // Member of index 0 A[i+1] = b; // Member of index 1 A[i+2] = c; // Member of index 2 A[i+3] = d; // Member of index 3 }

Note: the interleaved load group could have gaps (missing members), but the interleaved store group doesn't allow gaps.

Definition at line 488 of file VectorUtils.h.

Constructor & Destructor Documentation

◆ InterleaveGroup() [1/2]

template<typename InstTy >

llvm::InterleaveGroup< InstTy >::InterleaveGroup	(	uint32_t	Factor,
		bool	Reverse,
		Align	Alignment
	)

inline

Definition at line 490 of file VectorUtils.h.

References llvm::Reverse.

◆ InterleaveGroup() [2/2]

template<typename InstTy >

llvm::InterleaveGroup< InstTy >::InterleaveGroup	(	InstTy *	Instr,
		int32_t	Stride,
		Align	Alignment
	)

inline

Definition at line 494 of file VectorUtils.h.

References assert().

Member Function Documentation

◆ addMetadata() [1/2]

void llvm::InterleaveGroup< Instruction >::addMetadata ( Instruction * NewInst ) const

Definition at line 1638 of file VectorUtils.cpp.

References llvm::propagateMetadata().

◆ addMetadata() [2/2]

template<typename InstTy >

void InterleaveGroup::addMetadata ( InstTy * NewInst ) const

Add metadata (e.g.

alias info) from the instructions in this group to NewInst.

FIXME: this function currently does not add noalias metadata a'la addNewMedata. To do that we need to compute the intersection of the noalias info from all members.

Definition at line 1632 of file VectorUtils.cpp.

References llvm_unreachable.

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