llvm::mca::ReadState Class Reference

Tracks register operand latency in cycles. More...

#include "llvm/MCA/Instruction.h"

Public Member Functions
	ReadState (const ReadDescriptor &Desc, MCPhysReg RegID)
const ReadDescriptor &	getDescriptor () const
unsigned	getSchedClass () const
MCPhysReg	getRegisterID () const
unsigned	getRegisterFileID () const
const CriticalDependency &	getCriticalRegDep () const
bool	isPending () const
bool	isReady () const
bool	isImplicitRead () const
bool	isIndependentFromDef () const
void	setIndependentFromDef ()
void	cycleEvent ()
void	writeStartEvent (unsigned IID, MCPhysReg RegID, unsigned Cycles)
void	setDependentWrites (unsigned Writes)
bool	isReadZero () const
void	setReadZero ()
void	setPRF (unsigned ID)

Detailed Description

Tracks register operand latency in cycles.

A read may be dependent on more than one write. This occurs when some writes only partially update the register associated to this read.

Definition at line 227 of file Instruction.h.

Constructor & Destructor Documentation

ReadState()

llvm::mca::ReadState::ReadState ( const ReadDescriptor &  Desc, MCPhysReg  RegID  )

inline

Definition at line 257 of file Instruction.h.

Member Function Documentation

cycleEvent()

void llvm::mca::ReadState::cycleEvent

(

)

Definition at line 106 of file Instruction.cpp.

References llvm::mca::UNKNOWN_CYCLES.

getCriticalRegDep()

const CriticalDependency& llvm::mca::ReadState::getCriticalRegDep ( ) const

inline

Definition at line 266 of file Instruction.h.

getDescriptor()

const ReadDescriptor& llvm::mca::ReadState::getDescriptor ( ) const

inline

Definition at line 262 of file Instruction.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead().

getRegisterFileID()

unsigned llvm::mca::ReadState::getRegisterFileID ( ) const

inline

Definition at line 265 of file Instruction.h.

getRegisterID()

MCPhysReg llvm::mca::ReadState::getRegisterID ( ) const

inline

Definition at line 264 of file Instruction.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead(), and llvm::mca::RegisterFile::tryEliminateMove().

getSchedClass()

unsigned llvm::mca::ReadState::getSchedClass ( ) const

inline

Definition at line 263 of file Instruction.h.

References llvm::mca::ReadDescriptor::SchedClassID.

isImplicitRead()

bool llvm::mca::ReadState::isImplicitRead ( ) const

inline

Definition at line 270 of file Instruction.h.

References llvm::mca::ReadDescriptor::isImplicitRead().

isIndependentFromDef()

bool llvm::mca::ReadState::isIndependentFromDef ( ) const

inline

Definition at line 272 of file Instruction.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead().

isPending()

bool llvm::mca::ReadState::isPending ( ) const

inline

Definition at line 268 of file Instruction.h.

isReady()

bool llvm::mca::ReadState::isReady ( ) const

inline

Definition at line 269 of file Instruction.h.

isReadZero()

bool llvm::mca::ReadState::isReadZero ( ) const

inline

Definition at line 282 of file Instruction.h.

setDependentWrites()

void llvm::mca::ReadState::setDependentWrites ( unsigned  Writes )

inline

Definition at line 277 of file Instruction.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead().

setIndependentFromDef()

void llvm::mca::ReadState::setIndependentFromDef ( )

inline

Definition at line 273 of file Instruction.h.

Referenced by llvm::mca::InstrBuilder::createInstruction().

setPRF()

void llvm::mca::ReadState::setPRF ( unsigned  ID )

inline

Definition at line 284 of file Instruction.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead().

setReadZero()

void llvm::mca::ReadState::setReadZero ( )

inline

Definition at line 283 of file Instruction.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead(), and llvm::mca::RegisterFile::tryEliminateMove().

writeStartEvent()

void llvm::mca::ReadState::writeStartEvent	(	unsigned	IID,
		MCPhysReg	RegID,
		unsigned	Cycles
	)

Definition at line 30 of file Instruction.cpp.

References assert(), llvm::mca::CriticalDependency::Cycles, llvm::mca::CriticalDependency::IID, llvm::mca::CriticalDependency::RegID, and llvm::mca::UNKNOWN_CYCLES.

Referenced by llvm::mca::WriteState::onInstructionIssued().

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

• include/llvm/MCA/Instruction.h
• lib/MCA/Instruction.cpp