llvm::HardwareLoopInfo Struct Reference

Attributes of a target dependent hardware loop. More...

#include "llvm/Analysis/TargetTransformInfo.h"

Public Member Functions
	HardwareLoopInfo ()=delete
	HardwareLoopInfo (Loop *L)
bool	isHardwareLoopCandidate (ScalarEvolution &SE, LoopInfo &LI, DominatorTree &DT, bool ForceNestedLoop=false, bool ForceHardwareLoopPHI=false)
bool	canAnalyze (LoopInfo &LI)

Public Attributes
Loop *	L = nullptr
BasicBlock *	ExitBlock = nullptr
BranchInst *	ExitBranch = nullptr
const SCEV *	ExitCount = nullptr
IntegerType *	CountType = nullptr
Value *	LoopDecrement = nullptr
bool	IsNestingLegal = false
bool	CounterInReg = false
bool	PerformEntryTest = false

Detailed Description

Attributes of a target dependent hardware loop.

Definition at line 95 of file TargetTransformInfo.h.

Constructor & Destructor Documentation

HardwareLoopInfo() [1/2]

llvm::HardwareLoopInfo::HardwareLoopInfo ( )

delete

HardwareLoopInfo() [2/2]

HardwareLoopInfo::HardwareLoopInfo

(

Loop *

L

)

Definition at line 116 of file TargetTransformInfo.cpp.

References CountType, llvm::BasicBlock::getContext(), llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::Type::getInt32Ty(), L, and LoopDecrement.

Member Function Documentation

canAnalyze()

bool HardwareLoopInfo::canAnalyze

(

LoopInfo &

LI

)

Definition at line 61 of file TargetTransformInfo.cpp.

References L, and llvm::LoopBlocksRPO::perform().

Referenced by llvm::PPCTTIImpl::canSaveCmp(), and llvm::ARMTTIImpl::preferPredicateOverEpilogue().

isHardwareLoopCandidate()

bool HardwareLoopInfo::isHardwareLoopCandidate	(	ScalarEvolution &	SE,
		LoopInfo &	LI,
		DominatorTree &	DT,
		bool	ForceNestedLoop = false,
		bool	ForceHardwareLoopPHI = false
	)

Definition at line 124 of file TargetTransformInfo.cpp.

References llvm::LoopBase< BlockT, LoopT >::contains(), CounterInReg, CountType, llvm::DominatorTree::dominates(), ExitBlock, ExitBranch, ExitCount, ForceHardwareLoopPHI, ForceNestedLoop, llvm::IntegerType::getBitWidth(), llvm::ScalarEvolution::getExitCount(), llvm::LoopBase< BlockT, LoopT >::getExitingBlocks(), llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::LoopInfoBase< BlockT, LoopT >::getLoopFor(), llvm::ScalarEvolution::getTypeSizeInBits(), llvm::ScalarEvolution::isLoopInvariant(), llvm::LoopBase< BlockT, LoopT >::isLoopLatch(), IsNestingLegal, L, and llvm::predecessors().

Referenced by llvm::PPCTTIImpl::canSaveCmp(), and llvm::ARMTTIImpl::preferPredicateOverEpilogue().

Member Data Documentation

CounterInReg

bool llvm::HardwareLoopInfo::CounterInReg = false

Definition at line 107 of file TargetTransformInfo.h.

Referenced by isHardwareLoopCandidate(), and llvm::ARMTTIImpl::isHardwareLoopProfitable().

CountType

IntegerType* llvm::HardwareLoopInfo::CountType = nullptr

Definition at line 102 of file TargetTransformInfo.h.

Referenced by HardwareLoopInfo(), isHardwareLoopCandidate(), llvm::ARMTTIImpl::isHardwareLoopProfitable(), and llvm::PPCTTIImpl::isHardwareLoopProfitable().

ExitBlock

BasicBlock* llvm::HardwareLoopInfo::ExitBlock = nullptr

Definition at line 99 of file TargetTransformInfo.h.

Referenced by isHardwareLoopCandidate().

ExitBranch

BranchInst* llvm::HardwareLoopInfo::ExitBranch = nullptr

Definition at line 100 of file TargetTransformInfo.h.

Referenced by llvm::PPCTTIImpl::canSaveCmp(), and isHardwareLoopCandidate().

ExitCount

const SCEV* llvm::HardwareLoopInfo::ExitCount = nullptr

Definition at line 101 of file TargetTransformInfo.h.

Referenced by isHardwareLoopCandidate().

IsNestingLegal

bool llvm::HardwareLoopInfo::IsNestingLegal = false

Definition at line 105 of file TargetTransformInfo.h.

Referenced by isHardwareLoopCandidate(), and llvm::ARMTTIImpl::isHardwareLoopProfitable().

L

Loop* llvm::HardwareLoopInfo::L = nullptr

Definition at line 98 of file TargetTransformInfo.h.

Referenced by canAnalyze(), HardwareLoopInfo(), and isHardwareLoopCandidate().

LoopDecrement

Value* llvm::HardwareLoopInfo::LoopDecrement = nullptr

Definition at line 103 of file TargetTransformInfo.h.

Referenced by HardwareLoopInfo(), llvm::ARMTTIImpl::isHardwareLoopProfitable(), and llvm::PPCTTIImpl::isHardwareLoopProfitable().

PerformEntryTest

bool llvm::HardwareLoopInfo::PerformEntryTest = false

Definition at line 109 of file TargetTransformInfo.h.

Referenced by llvm::ARMTTIImpl::isHardwareLoopProfitable().

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

• include/llvm/Analysis/TargetTransformInfo.h
• lib/Analysis/TargetTransformInfo.cpp