llvm::mca::ResourceState Class Reference

A processor resource descriptor. More...

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

Public Member Functions
LLVM_ABI	ResourceState (const MCProcResourceDesc &Desc, unsigned Index, uint64_t Mask)
unsigned	getProcResourceID () const
uint64_t	getResourceMask () const
uint64_t	getReadyMask () const
int	getBufferSize () const
bool	isBuffered () const
bool	isInOrder () const
bool	isADispatchHazard () const
	Returns true if this is an in-order dispatch/issue resource.
bool	isReserved () const
void	setReserved ()
void	clearReserved ()
LLVM_ABI bool	isReady (unsigned NumUnits=1) const
	Returs true if this resource is not reserved, and if there are at least NumUnits available units.
uint64_t	getNumReadyUnits () const
bool	isAResourceGroup () const
bool	containsResource (uint64_t ID) const
void	markSubResourceAsUsed (uint64_t ID)
void	releaseSubResource (uint64_t ID)
unsigned	getNumUnits () const
LLVM_ABI ResourceStateEvent	isBufferAvailable () const
	Checks if there is an available slot in the resource buffer.
bool	reserveBuffer ()
	Reserve a buffer slot.
void	releaseBuffer ()
	Releases a slot in the buffer.
void	dump () const

Detailed Description

A processor resource descriptor.

There is an instance of this class for every processor resource defined by the machine scheduling model. Objects of class ResourceState dynamically track the usage of processor resource units.

Definition at line 136 of file ResourceManager.h.

Constructor & Destructor Documentation

ResourceState()

llvm::mca::ResourceState::ResourceState	(	const MCProcResourceDesc &	Desc,
		unsigned	Index,
		uint64_t	Mask
	)

Definition at line 65 of file ResourceManager.cpp.

References llvm::mca::getResourceStateIndex().

Member Function Documentation

clearReserved()

void llvm::mca::ResourceState::clearReserved ( )

inline

Definition at line 231 of file ResourceManager.h.

References Unavailable.

Referenced by llvm::mca::ResourceManager::releaseResource().

containsResource()

bool llvm::mca::ResourceState::containsResource ( uint64_t  ID ) const

inline

Definition at line 241 of file ResourceManager.h.

dump()

void llvm::mca::ResourceState::dump

(

)

const

Definition at line 94 of file ResourceManager.cpp.

References llvm::dbgs(), and llvm::format_hex().

getBufferSize()

int llvm::mca::ResourceState::getBufferSize ( ) const

inline

Definition at line 221 of file ResourceManager.h.

getNumReadyUnits()

uint64_t llvm::mca::ResourceState::getNumReadyUnits ( ) const

inline

Definition at line 237 of file ResourceManager.h.

References llvm::popcount().

Referenced by llvm::mca::ResourceManager::issueInstructionImpl().

getNumUnits()

unsigned llvm::mca::ResourceState::getNumUnits ( ) const

inline

Definition at line 253 of file ResourceManager.h.

References isAResourceGroup(), and llvm::popcount().

Referenced by llvm::mca::getStrategyFor().

getProcResourceID()

unsigned llvm::mca::ResourceState::getProcResourceID ( ) const

inline

Definition at line 218 of file ResourceManager.h.

getReadyMask()

uint64_t llvm::mca::ResourceState::getReadyMask ( ) const

inline

Definition at line 220 of file ResourceManager.h.

Referenced by llvm::mca::ResourceManager::checkAvailability(), and llvm::mca::getStrategyFor().

getResourceMask()

uint64_t llvm::mca::ResourceState::getResourceMask ( ) const

inline

Definition at line 219 of file ResourceManager.h.

isADispatchHazard()

bool llvm::mca::ResourceState::isADispatchHazard ( ) const

inline

Returns true if this is an in-order dispatch/issue resource.

Definition at line 227 of file ResourceManager.h.

Referenced by isBufferAvailable(), isReady(), and llvm::mca::ResourceManager::releaseResource().

isAResourceGroup()

bool llvm::mca::ResourceState::isAResourceGroup ( ) const

inline

Definition at line 239 of file ResourceManager.h.

Referenced by llvm::mca::ResourceManager::checkAvailability(), getNumUnits(), llvm::mca::getStrategyFor(), llvm::mca::ResourceManager::issueInstructionImpl(), llvm::mca::ResourceManager::releaseResource(), llvm::mca::ResourceManager::reserveResource(), and llvm::mca::ResourceManager::ResourceManager().

isBufferAvailable()

ResourceStateEvent llvm::mca::ResourceState::isBufferAvailable

(

)

const

Checks if there is an available slot in the resource buffer.

Returns RS_BUFFER_AVAILABLE if this is not a buffered resource, or if there is a slot available.

Returns RS_RESERVED if this buffered resource is a dispatch hazard, and it is reserved.

Returns RS_BUFFER_UNAVAILABLE if there are no available slots.

Definition at line 85 of file ResourceManager.cpp.

References isADispatchHazard(), isBuffered(), isReserved(), llvm::mca::RS_BUFFER_AVAILABLE, llvm::mca::RS_BUFFER_UNAVAILABLE, and llvm::mca::RS_RESERVED.

isBuffered()

bool llvm::mca::ResourceState::isBuffered ( ) const

inline

Definition at line 223 of file ResourceManager.h.

Referenced by isBufferAvailable().

isInOrder()

bool llvm::mca::ResourceState::isInOrder ( ) const

inline

Definition at line 224 of file ResourceManager.h.

isReady()

bool llvm::mca::ResourceState::isReady

(

unsigned

NumUnits = 1

)

const

Returs true if this resource is not reserved, and if there are at least NumUnits available units.

Definition at line 80 of file ResourceManager.cpp.

References isADispatchHazard(), isReserved(), and llvm::popcount().

Referenced by llvm::mca::ResourceManager::checkAvailability().

isReserved()

bool llvm::mca::ResourceState::isReserved ( ) const

inline

Definition at line 228 of file ResourceManager.h.

References Unavailable.

Referenced by isBufferAvailable(), isReady(), and llvm::mca::ResourceManager::reserveResource().

markSubResourceAsUsed()

void llvm::mca::ResourceState::markSubResourceAsUsed ( uint64_t  ID )

inline

Definition at line 243 of file ResourceManager.h.

References assert().

releaseBuffer()

void llvm::mca::ResourceState::releaseBuffer ( )

inline

Releases a slot in the buffer.

Definition at line 282 of file ResourceManager.h.

References assert().

releaseSubResource()

void llvm::mca::ResourceState::releaseSubResource ( uint64_t  ID )

inline

Definition at line 248 of file ResourceManager.h.

References assert().

reserveBuffer()

bool llvm::mca::ResourceState::reserveBuffer ( )

inline

Reserve a buffer slot.

Returns true if the buffer is not full. It always returns true if BufferSize is set to zero.

Definition at line 272 of file ResourceManager.h.

References assert().

setReserved()

void llvm::mca::ResourceState::setReserved ( )

inline

Definition at line 230 of file ResourceManager.h.

References Unavailable.

Referenced by llvm::mca::ResourceManager::reserveResource().

---

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

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