llvm::mca::ExecuteStage Class Reference

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

Inheritance diagram for llvm::mca::ExecuteStage:

Public Member Functions
	ExecuteStage (Scheduler &S)
	ExecuteStage (Scheduler &S, bool ShouldPerformBottleneckAnalysis)
bool	hasWorkToComplete () const override
	Returns true if some instructions are still executing this stage.
bool	isAvailable (const InstRef &IR) const override
	Returns true if it can execute IR during this cycle.
Error	cycleStart () override
	Called once at the start of each cycle.
Error	cycleEnd () override
	Called once at the end of each cycle.
Error	execute (InstRef &IR) override
	The primary action that this stage performs on instruction IR.
void	notifyInstructionIssued (const InstRef &IR, MutableArrayRef< ResourceUse > Used) const
void	notifyInstructionExecuted (const InstRef &IR) const
void	notifyInstructionPending (const InstRef &IR) const
void	notifyInstructionReady (const InstRef &IR) const
void	notifyResourceAvailable (const ResourceRef &RR) const
void	notifyReservedOrReleasedBuffers (const InstRef &IR, bool Reserved) const
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 28 of file ExecuteStage.h.

Constructor & Destructor Documentation

ExecuteStage() [1/2]

llvm::mca::ExecuteStage::ExecuteStage ( Scheduler &  S )

inline

Definition at line 50 of file ExecuteStage.h.

ExecuteStage() [2/2]

llvm::mca::ExecuteStage::ExecuteStage ( Scheduler &  S, bool  ShouldPerformBottleneckAnalysis  )

inline

Definition at line 51 of file ExecuteStage.h.

Member Function Documentation

cycleEnd()

Error llvm::mca::ExecuteStage::cycleEnd ( )

overridevirtual

Called once at the end of each cycle.

Reimplemented from llvm::mca::Stage.

Definition at line 122 of file ExecuteStage.cpp.

References llvm::mca::Scheduler::analyzeDataDependencies(), llvm::mca::Scheduler::analyzeResourcePressure(), llvm::dbgs(), llvm::format_hex(), llvm::mca::Scheduler::hadTokenStall(), LLVM_DEBUG, llvm::mca::HWPressureEvent::MEMORY_DEPS, llvm::mca::Stage::notifyEvent(), llvm::mca::HWPressureEvent::REGISTER_DEPS, llvm::mca::HWPressureEvent::RESOURCES, and llvm::SmallVectorBase< Size_T >::size().

cycleStart()

Error llvm::mca::ExecuteStage::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 93 of file ExecuteStage.cpp.

References llvm::mca::Scheduler::cycleEvent(), IR, llvm::mca::Stage::moveToTheNextStage(), notifyInstructionExecuted(), notifyInstructionPending(), notifyInstructionReady(), and notifyResourceAvailable().

execute()

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

overridevirtual

The primary action that this stage performs on instruction IR.

Implements llvm::mca::Stage.

Definition at line 186 of file ExecuteStage.cpp.

References assert(), llvm::mca::Scheduler::dispatch(), llvm::mca::InstructionBase::getNumMicroOps(), llvm::mca::Scheduler::instructionCheck(), IR, isAvailable(), llvm::mca::Instruction::isPending(), llvm::mca::Scheduler::mustIssueImmediately(), notifyInstructionPending(), notifyInstructionReady(), and notifyReservedOrReleasedBuffers().

hasWorkToComplete()

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

inlineoverridevirtual

Returns true if some instructions are still executing this stage.

Implements llvm::mca::Stage.

Definition at line 61 of file ExecuteStage.h.

isAvailable()

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

overridevirtual

Returns true if it can execute IR during this cycle.

Reimplemented from llvm::mca::Stage.

Definition at line 43 of file ExecuteStage.cpp.

References IR, llvm::mca::Scheduler::isAvailable(), and llvm::mca::toHWStallEventType().

Referenced by execute().

notifyInstructionExecuted()

void llvm::mca::ExecuteStage::notifyInstructionExecuted

(

const InstRef &

IR

)

const

Definition at line 227 of file ExecuteStage.cpp.

References llvm::dbgs(), llvm::mca::HWInstructionEvent::Executed, IR, and LLVM_DEBUG.

Referenced by cycleStart().

notifyInstructionIssued()

void llvm::mca::ExecuteStage::notifyInstructionIssued	(	const InstRef &	IR,
		MutableArrayRef< ResourceUse >	Used
	)		const

Definition at line 252 of file ExecuteStage.cpp.

References assert(), llvm::dbgs(), llvm::mca::Scheduler::getResourceID(), IR, and LLVM_DEBUG.

notifyInstructionPending()

void llvm::mca::ExecuteStage::notifyInstructionPending

(

const InstRef &

IR

)

const

Definition at line 233 of file ExecuteStage.cpp.

References llvm::dbgs(), IR, LLVM_DEBUG, and llvm::mca::HWInstructionEvent::Pending.

Referenced by cycleStart(), and execute().

notifyInstructionReady()

void llvm::mca::ExecuteStage::notifyInstructionReady

(

const InstRef &

IR

)

const

Definition at line 239 of file ExecuteStage.cpp.

References llvm::dbgs(), IR, LLVM_DEBUG, and llvm::mca::HWInstructionEvent::Ready.

Referenced by cycleStart(), and execute().

notifyReservedOrReleasedBuffers()

void llvm::mca::ExecuteStage::notifyReservedOrReleasedBuffers	(	const InstRef &	IR,
		bool	Reserved
	)		const

Definition at line 271 of file ExecuteStage.cpp.

References E, llvm::mca::Stage::getListeners(), llvm::mca::Scheduler::getResourceID(), I, IR, llvm::popcount(), llvm::Reserved, and llvm::SmallVectorBase< Size_T >::size().

Referenced by execute().

notifyResourceAvailable()

void llvm::mca::ExecuteStage::notifyResourceAvailable

(

const ResourceRef &

RR

)

const

Definition at line 245 of file ExecuteStage.cpp.

References llvm::dbgs(), llvm::mca::Stage::getListeners(), and LLVM_DEBUG.

Referenced by cycleStart().

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

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