LLVM: llvm::mca::ResourceManager Class Reference

LLVM 8.0.1

A resource manager for processor resource units and groups. More...

#include "llvm/MCA/HardwareUnits/ResourceManager.h"

Public Member Functions
	ResourceManager (const MCSchedModel &SM)

virtual	~ResourceManager ()=default

void	setCustomStrategy (std::unique_ptr< ResourceStrategy > S, unsigned ResourceID)

ResourceStateEvent	canBeDispatched (ArrayRef< uint64_t > Buffers) const

unsigned	resolveResourceMask (uint64_t Mask) const

void	reserveBuffers (ArrayRef< uint64_t > Buffers)

void	releaseBuffers (ArrayRef< uint64_t > Buffers)

void	reserveResource (uint64_t ResourceID)

void	releaseResource (uint64_t ResourceID)

bool	canBeIssued (const InstrDesc &Desc) const

void	issueInstruction (const InstrDesc &Desc, SmallVectorImpl< std::pair< ResourceRef, ResourceCycles >> &Pipes)

void	cycleEvent (SmallVectorImpl< ResourceRef > &ResourcesFreed)

void	dump () const

Detailed Description

A resource manager for processor resource units and groups.

This class owns all the ResourceState objects, and it is responsible for acting on requests from a Scheduler by updating the internal state of ResourceState objects. This class doesn't know about instruction itineraries and functional units. In future, it can be extended to support itineraries too through the same public interface.

Definition at line 304 of file ResourceManager.h.

Constructor & Destructor Documentation

◆ ResourceManager()

llvm::mca::ResourceManager::ResourceManager ( const MCSchedModel & SM )

Definition at line 118 of file ResourceManager.cpp.

References assert(), llvm::mca::computeProcResourceMasks(), E, llvm::MCSchedModel::getNumProcResourceKinds(), llvm::MCSchedModel::getProcResource(), llvm::mca::getResourceStateIndex(), llvm::mca::getStrategyFor(), I, llvm::mca::ResourceState::isAResourceGroup(), llvm::BitmaskEnumDetail::Mask(), and Unit.

◆ ~ResourceManager()

virtual llvm::mca::ResourceManager::~ResourceManager ( )

virtualdefault

Member Function Documentation

◆ canBeDispatched()

ResourceStateEvent llvm::mca::ResourceManager::canBeDispatched ( ArrayRef< uint64_t > Buffers ) const

Definition at line 234 of file ResourceManager.cpp.

References llvm::mca::getResourceStateIndex(), llvm::mca::ResourceState::isBufferAvailable(), and llvm::mca::RS_BUFFER_AVAILABLE.

◆ canBeIssued()

bool llvm::mca::ResourceManager::canBeIssued ( const InstrDesc & Desc ) const

Definition at line 263 of file ResourceManager.cpp.

References llvm::all_of(), E, and llvm::mca::InstrDesc::Resources.

◆ cycleEvent()

void llvm::mca::ResourceManager::cycleEvent ( SmallVectorImpl< ResourceRef > & ResourcesFreed )

Definition at line 299 of file ResourceManager.cpp.

References llvm::ISD::BR, llvm::countPopulation(), llvm::SmallVectorTemplateBase< T >::push_back(), and releaseResource().

◆ dump()

void llvm::mca::ResourceManager::dump ( ) const

inline

Definition at line 401 of file ResourceManager.h.

◆ issueInstruction()

void llvm::mca::ResourceManager::issueInstruction	(	const InstrDesc &	Desc,
		SmallVectorImpl< std::pair< ResourceRef, ResourceCycles >> &	Pipes
	)

Definition at line 272 of file ResourceManager.cpp.

References assert(), llvm::mca::CycleSegment::begin(), llvm::countPopulation(), releaseResource(), reserveResource(), llvm::mca::InstrDesc::Resources, and llvm::mca::CycleSegment::size().

◆ releaseBuffers()

void llvm::mca::ResourceManager::releaseBuffers ( ArrayRef< uint64_t > Buffers )

Definition at line 258 of file ResourceManager.cpp.

References llvm::mca::getResourceStateIndex().

◆ releaseResource()

void llvm::mca::ResourceManager::releaseResource ( uint64_t ResourceID )

Definition at line 325 of file ResourceManager.cpp.

References llvm::mca::ResourceState::clearReserved(), and llvm::mca::getResourceStateIndex().

Referenced by cycleEvent(), and issueInstruction().

◆ reserveBuffers()

void llvm::mca::ResourceManager::reserveBuffers ( ArrayRef< uint64_t > Buffers )

Definition at line 245 of file ResourceManager.cpp.

References assert(), llvm::mca::getResourceStateIndex(), llvm::mca::ResourceState::isADispatchHazard(), llvm::mca::ResourceState::isBufferAvailable(), llvm::mca::ResourceState::isReserved(), llvm::mca::ResourceState::reserveBuffer(), llvm::mca::RS_BUFFER_AVAILABLE, and llvm::mca::ResourceState::setReserved().

◆ reserveResource()

void llvm::mca::ResourceManager::reserveResource ( uint64_t ResourceID )

Definition at line 319 of file ResourceManager.cpp.

References assert(), llvm::mca::getResourceStateIndex(), llvm::mca::ResourceState::isReserved(), and llvm::mca::ResourceState::setReserved().

Referenced by issueInstruction().

◆ resolveResourceMask()

unsigned llvm::mca::ResourceManager::resolveResourceMask ( uint64_t Mask ) const

Definition at line 160 of file ResourceManager.cpp.

References assert(), llvm::mca::ResourceState::containsResource(), llvm::mca::ResourceState::getNumUnits(), llvm::mca::ResourceState::getResourceMask(), llvm::mca::getResourceStateIndex(), llvm::mca::ResourceState::isAResourceGroup(), llvm::mca::ResourceState::isReady(), llvm::mca::ResourceState::markSubResourceAsUsed(), llvm::mca::ResourceState::releaseSubResource(), and Users.

◆ setCustomStrategy()

void llvm::mca::ResourceManager::setCustomStrategy	(	std::unique_ptr< ResourceStrategy >	S,
		unsigned	ResourceID
	)

inline

Definition at line 364 of file ResourceManager.h.

References assert(), llvm::BitmaskEnumDetail::Mask(), and llvm::SmallVectorBase::size().

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

include/llvm/MCA/HardwareUnits/ResourceManager.h
lib/MCA/HardwareUnits/ResourceManager.cpp