LLVM 20.0.0git
Public Types | Public Member Functions | List of all members
llvm::mca::ResourceManager Class Reference

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

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

Public Types

using ResourceWithCycles = std::pair< ResourceRef, ReleaseAtCycles >
 

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< ResourceWithCycles > &Pipes)
 
void fastIssueInstruction (const InstrDesc &Desc, SmallVectorImpl< ResourceWithCycles > &Pipes)
 
void issueInstructionImpl (const InstrDesc &Desc, SmallVectorImpl< ResourceWithCycles > &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 313 of file ResourceManager.h.

Member Typedef Documentation

◆ ResourceWithCycles

using llvm::mca::ResourceManager::ResourceWithCycles = std::pair<ResourceRef, ReleaseAtCycles>

Definition at line 433 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, Index, 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::mca::ResourceState::getReadyMask(), llvm::mca::getResourceStateIndex(), Index, llvm::mca::ResourceState::isAResourceGroup(), llvm::mca::ResourceState::isReady(), llvm::popcount(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::try_emplace().

◆ cycleEvent()

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

Definition at line 454 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 463 of file ResourceManager.h.

◆ fastIssueInstruction()

void llvm::mca::ResourceManager::fastIssueInstruction ( const InstrDesc &  Desc,
SmallVectorImpl< ResourceWithCycles > &  Pipes 
)

Definition at line 428 of file ResourceManager.cpp.

References assert(), llvm::mca::CycleSegment::begin(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::popcount(), releaseResource(), reserveResource(), llvm::mca::CycleSegment::size(), and use.

Referenced by issueInstruction().

◆ getAvailableProcResUnits()

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

Definition at line 431 of file ResourceManager.h.

◆ getProcResUnitMask()

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

Definition at line 430 of file ResourceManager.h.

◆ issueInstruction()

void llvm::mca::ResourceManager::issueInstruction ( const InstrDesc &  Desc,
SmallVectorImpl< ResourceWithCycles > &  Pipes 
)
inline

Definition at line 435 of file ResourceManager.h.

References fastIssueInstruction(), and issueInstructionImpl().

◆ issueInstructionImpl()

void llvm::mca::ResourceManager::issueInstructionImpl ( const InstrDesc &  Desc,
SmallVectorImpl< ResourceWithCycles > &  Pipes 
)

Definition at line 346 of file ResourceManager.cpp.

References assert(), llvm::mca::CycleSegment::begin(), E, llvm::SmallVectorImpl< T >::emplace_back(), llvm::SmallVectorBase< Size_T >::empty(), llvm::mca::ResourceState::getNumReadyUnits(), llvm::mca::getResourceStateIndex(), I, llvm::mca::ResourceState::isAResourceGroup(), llvm::popcount(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), releaseResource(), reserveResource(), llvm::SmallVectorBase< Size_T >::size(), llvm::mca::CycleSegment::size(), llvm::sort(), and use.

Referenced by issueInstruction().

◆ 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 482 of file ResourceManager.cpp.

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

Referenced by cycleEvent(), fastIssueInstruction(), and issueInstructionImpl().

◆ 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 473 of file ResourceManager.cpp.

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

Referenced by fastIssueInstruction(), and issueInstructionImpl().

◆ 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 393 of file ResourceManager.h.

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

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