llvm::mca::ResourceManager Class Reference

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 (uint64_t ConsumedBuffers) const
unsigned	resolveResourceMask (uint64_t Mask) const
void	reserveBuffers (uint64_t ConsumedBuffers)
void	releaseBuffers (uint64_t ConsumedBuffers)
void	reserveResource (uint64_t ResourceID)
void	releaseResource (uint64_t ResourceID)
uint64_t	checkAvailability (const InstrDesc &Desc) const
uint64_t	getProcResUnitMask () const
uint64_t	getAvailableProcResUnits () const
void	issueInstruction (const InstrDesc &Desc, SmallVectorImpl< std::pair< ResourceRef, ReleaseAtCycles > > &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 311 of file ResourceManager.h.

Constructor & Destructor Documentation

ResourceManager()

llvm::mca::ResourceManager::ResourceManager

(

const MCSchedModel &

SM

)

Definition at line 111 of file ResourceManager.cpp.

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

~ResourceManager()

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

virtualdefault

Member Function Documentation

canBeDispatched()

ResourceStateEvent llvm::mca::ResourceManager::canBeDispatched

(

uint64_t

ConsumedBuffers

)

const

Definition at line 245 of file ResourceManager.cpp.

References llvm::mca::RS_BUFFER_AVAILABLE, llvm::mca::RS_BUFFER_UNAVAILABLE, and llvm::mca::RS_RESERVED.

checkAvailability()

uint64_t llvm::mca::ResourceManager::checkAvailability

(

const InstrDesc &

Desc

)

const

Definition at line 282 of file ResourceManager.cpp.

References llvm::bit_floor(), E, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::mca::ResourceState::getReadyMask(), llvm::mca::getResourceStateIndex(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::mca::ResourceState::isAResourceGroup(), llvm::mca::ResourceState::isReady(), and llvm::popcount().

cycleEvent()

void llvm::mca::ResourceManager::cycleEvent

(

SmallVectorImpl< ResourceRef > &

ResourcesFreed

)

Definition at line 374 of file ResourceManager.cpp.

References llvm::popcount(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::release, and releaseResource().

Referenced by llvm::mca::InOrderIssueStage::cycleStart().

dump()

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

inline

Definition at line 438 of file ResourceManager.h.

getAvailableProcResUnits()

uint64_t llvm::mca::ResourceManager::getAvailableProcResUnits ( ) const

inline

Definition at line 429 of file ResourceManager.h.

getProcResUnitMask()

uint64_t llvm::mca::ResourceManager::getProcResUnitMask ( ) const

inline

Definition at line 428 of file ResourceManager.h.

issueInstruction()

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

Definition at line 347 of file ResourceManager.cpp.

References assert(), llvm::mca::CycleSegment::begin(), llvm::popcount(), releaseResource(), reserveResource(), llvm::mca::CycleSegment::size(), and use.

releaseBuffers()

void llvm::mca::ResourceManager::releaseBuffers

(

uint64_t

ConsumedBuffers

)

Definition at line 270 of file ResourceManager.cpp.

References llvm::mca::getResourceStateIndex().

releaseResource()

void llvm::mca::ResourceManager::releaseResource

(

uint64_t

ResourceID

)

Definition at line 402 of file ResourceManager.cpp.

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

Referenced by cycleEvent(), and issueInstruction().

reserveBuffers()

void llvm::mca::ResourceManager::reserveBuffers

(

uint64_t

ConsumedBuffers

)

Definition at line 253 of file ResourceManager.cpp.

References assert(), llvm::mca::getResourceStateIndex(), and llvm::mca::RS_BUFFER_AVAILABLE.

reserveResource()

void llvm::mca::ResourceManager::reserveResource

(

uint64_t

ResourceID

)

Definition at line 393 of file ResourceManager.cpp.

References assert(), llvm::mca::getResourceStateIndex(), llvm::mca::ResourceState::isAResourceGroup(), 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 166 of file ResourceManager.cpp.

References llvm::mca::getResourceStateIndex().

setCustomStrategy()

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

inline

Definition at line 391 of file ResourceManager.h.

References assert(), and llvm::SmallVectorBase< Size_T >::size().

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

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