llvm::mca::InOrderIssueStage Class Reference

#include "llvm/MCA/Stages/InOrderIssueStage.h"

Inheritance diagram for llvm::mca::InOrderIssueStage:

Public Member Functions
	InOrderIssueStage (const MCSubtargetInfo &STI, RegisterFile &PRF, CustomBehaviour &CB, LSUnitBase &LSU)
unsigned	getIssueWidth () const
bool	isAvailable (const InstRef &) const override
	Returns true if it can execute IR during this cycle.
bool	hasWorkToComplete () const override
	Returns true if some instructions are still executing this stage.
Error	execute (InstRef &IR) override
	The primary action that this stage performs on instruction IR.
Error	cycleStart () override
	Called once at the start of each cycle.
Error	cycleEnd () override
	Called once at the end of each cycle.
Public Member Functions inherited from llvm::mca::Stage
	Stage ()=default
virtual	~Stage ()
virtual bool	isAvailable (const InstRef &IR) const
	Returns true if it can execute IR during this cycle.
virtual bool	hasWorkToComplete () const =0
	Returns true if some instructions are still executing this stage.
virtual Error	cycleStart ()
	Called once at the start of each cycle.
virtual Error	cycleResume ()
	Called after the pipeline is resumed from pausing state.
virtual Error	cycleEnd ()
	Called once at the end of each cycle.
virtual Error	execute (InstRef &IR)=0
	The primary action that this stage performs on instruction IR.
void	setNextInSequence (Stage *NextStage)
bool	checkNextStage (const InstRef &IR) const
Error	moveToTheNextStage (InstRef &IR)
	Called when an instruction is ready to move the next pipeline stage.
void	addListener (HWEventListener *Listener)
	Add a listener to receive callbacks during the execution of this stage.
template<typename EventT >
void	notifyEvent (const EventT &Event) const
	Notify listeners of a particular hardware event.

Additional Inherited Members
Protected Member Functions inherited from llvm::mca::Stage
const std::set< HWEventListener * > &	getListeners () const

Detailed Description

Definition at line 54 of file InOrderIssueStage.h.

Constructor & Destructor Documentation

InOrderIssueStage()

llvm::mca::InOrderIssueStage::InOrderIssueStage	(	const MCSubtargetInfo &	STI,
		RegisterFile &	PRF,
		CustomBehaviour &	CB,
		LSUnitBase &	LSU
	)

Definition at line 46 of file InOrderIssueStage.cpp.

Member Function Documentation

cycleEnd()

llvm::Error llvm::mca::InOrderIssueStage::cycleEnd ( )

overridevirtual

Called once at the end of each cycle.

Reimplemented from llvm::mca::Stage.

Definition at line 439 of file InOrderIssueStage.cpp.

References llvm::mca::RegisterFile::cycleEnd(), and llvm::mca::StallInfo::cycleEnd().

cycleStart()

llvm::Error llvm::mca::InOrderIssueStage::cycleStart ( )

overridevirtual

Called once at the start of each cycle.

This can be used as a setup phase to prepare for the executions during the cycle.

Reimplemented from llvm::mca::Stage.

Definition at line 397 of file InOrderIssueStage.cpp.

References assert(), llvm::mca::StallInfo::clear(), llvm::mca::LSUnitBase::cycleEvent(), llvm::mca::ResourceManager::cycleEvent(), llvm::mca::RegisterFile::cycleStart(), E, llvm::mca::StallInfo::getCyclesLeft(), llvm::mca::StallInfo::getInstruction(), getIssueWidth(), IR, and llvm::mca::StallInfo::isValid().

execute()

llvm::Error llvm::mca::InOrderIssueStage::execute ( InstRef &  IR )

overridevirtual

The primary action that this stage performs on instruction IR.

Implements llvm::mca::Stage.

Definition at line 198 of file InOrderIssueStage.cpp.

References llvm::mca::LSUnitBase::dispatch(), E, IR, llvm::mca::InstructionBase::isMemOp(), llvm::mca::StallInfo::isValid(), and llvm::mca::Instruction::setLSUTokenID().

getIssueWidth()

unsigned llvm::mca::InOrderIssueStage::getIssueWidth

(

)

const

Definition at line 52 of file InOrderIssueStage.cpp.

References llvm::MCSubtargetInfo::getSchedModel(), and llvm::MCSchedModel::IssueWidth.

Referenced by cycleStart(), and isAvailable().

hasWorkToComplete()

bool llvm::mca::InOrderIssueStage::hasWorkToComplete ( ) const

overridevirtual

Returns true if some instructions are still executing this stage.

Implements llvm::mca::Stage.

Definition at line 56 of file InOrderIssueStage.cpp.

References llvm::mca::StallInfo::isValid().

isAvailable()

bool llvm::mca::InOrderIssueStage::isAvailable ( const InstRef &  IR ) const

overridevirtual

Returns true if it can execute IR during this cycle.

Reimplemented from llvm::mca::Stage.

Definition at line 60 of file InOrderIssueStage.cpp.

References llvm::mca::InstructionBase::getBeginGroup(), getIssueWidth(), llvm::mca::InstructionBase::getNumMicroOps(), IR, and llvm::mca::StallInfo::isValid().

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

• include/llvm/MCA/Stages/InOrderIssueStage.h
• lib/MCA/Stages/InOrderIssueStage.cpp