LLVM  8.0.0svn
Public Member Functions | List of all members
llvm::InterleaveGroup< InstTy > Class Template Reference

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 >:
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Public Member Functions

 InterleaveGroup (unsigned Factor, bool Reverse, unsigned Align)
 
 InterleaveGroup (InstTy *Instr, int Stride, unsigned Align)
 
bool isReverse () const
 
unsigned getFactor () const
 
unsigned getAlignment () const
 
unsigned getNumMembers () const
 
bool insertMember (InstTy *Instr, int Index, unsigned NewAlign)
 Try to insert a new member Instr with index Index and alignment NewAlign. More...
 
InstTy * getMember (unsigned Index) const
 Get the member with the given index Index. More...
 
unsigned getIndex (const InstTy *Instr) const
 Get the index for the given member. More...
 
InstTy * getInsertPos () const
 
void setInsertPos (InstTy *Inst)
 
void addMetadata (InstTy *NewInst) const
 Add metadata (e.g. More...
 
bool requiresScalarEpilogue () const
 Returns true if this Group requires a scalar iteration to handle gaps. More...
 
template<>
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 27 of file VectorUtils.h.

Constructor & Destructor Documentation

◆ InterleaveGroup() [1/2]

template<typename InstTy>
llvm::InterleaveGroup< InstTy >::InterleaveGroup ( unsigned  Factor,
bool  Reverse,
unsigned  Align 
)
inline

Definition at line 238 of file VectorUtils.h.

◆ InterleaveGroup() [2/2]

template<typename InstTy>
llvm::InterleaveGroup< InstTy >::InterleaveGroup ( InstTy *  Instr,
int  Stride,
unsigned  Align 
)
inline

Definition at line 241 of file VectorUtils.h.

Member Function Documentation

◆ addMetadata() [1/2]

template<typename InstT>
void InterleaveGroup::addMetadata ( InstT *  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 970 of file VectorUtils.cpp.

Referenced by llvm::InnerLoopVectorizer::vectorizeInterleaveGroup().

◆ addMetadata() [2/2]

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

Definition at line 976 of file VectorUtils.cpp.

◆ getAlignment()

template<typename InstTy>
unsigned llvm::InterleaveGroup< InstTy >::getAlignment ( ) const
inline

Definition at line 254 of file VectorUtils.h.

Referenced by llvm::InnerLoopVectorizer::vectorizeInterleaveGroup().

◆ getFactor()

template<typename InstTy>
unsigned llvm::InterleaveGroup< InstTy >::getFactor ( ) const
inline

◆ getIndex()

template<typename InstTy>
unsigned llvm::InterleaveGroup< InstTy >::getIndex ( const InstTy *  Instr) const
inline

Get the index for the given member.

Unlike the key in the member map, the index starts from 0.

Definition at line 305 of file VectorUtils.h.

Referenced by llvm::InterleavedAccessInfo::analyzeInterleaving(), and llvm::InnerLoopVectorizer::vectorizeInterleaveGroup().

◆ getInsertPos()

template<typename InstTy>
InstTy* llvm::InterleaveGroup< InstTy >::getInsertPos ( ) const
inline

◆ getMember()

template<typename InstTy>
InstTy* llvm::InterleaveGroup< InstTy >::getMember ( unsigned  Index) const
inline

Get the member with the given index Index.

Returns
nullptr if contains no such member.

Definition at line 294 of file VectorUtils.h.

Referenced by llvm::createBitMaskForGaps(), llvm::InterleavedAccessInfo::requiresScalarEpilogue(), llvm::LoopVectorizationCostModel::setWideningDecision(), and llvm::InnerLoopVectorizer::vectorizeInterleaveGroup().

◆ getNumMembers()

template<typename InstTy>
unsigned llvm::InterleaveGroup< InstTy >::getNumMembers ( ) const
inline

Definition at line 255 of file VectorUtils.h.

Referenced by llvm::createBitMaskForGaps().

◆ insertMember()

template<typename InstTy>
bool llvm::InterleaveGroup< InstTy >::insertMember ( InstTy *  Instr,
int  Index,
unsigned  NewAlign 
)
inline

Try to insert a new member Instr with index Index and alignment NewAlign.

The index is related to the leader and it could be negative if it is the new leader.

Returns
false if the instruction doesn't belong to the group.

Definition at line 262 of file VectorUtils.h.

Referenced by llvm::InterleavedAccessInfo::analyzeInterleaving(), and llvm::VPValue::replaceAllUsesWith().

◆ isReverse()

template<typename InstTy>
bool llvm::InterleaveGroup< InstTy >::isReverse ( ) const
inline

◆ requiresScalarEpilogue()

template<typename InstTy>
bool llvm::InterleaveGroup< InstTy >::requiresScalarEpilogue ( ) const
inline

Returns true if this Group requires a scalar iteration to handle gaps.

Definition at line 326 of file VectorUtils.h.

Referenced by llvm::InterleavedAccessInfo::invalidateGroupsRequiringScalarEpilogue(), and llvm::InnerLoopVectorizer::vectorizeInterleaveGroup().

◆ setInsertPos()

template<typename InstTy>
void llvm::InterleaveGroup< InstTy >::setInsertPos ( InstTy *  Inst)
inline

Definition at line 315 of file VectorUtils.h.

Referenced by llvm::InterleavedAccessInfo::analyzeInterleaving().


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