llvm::mca::MemoryGroup Class Reference

A node of a memory dependency graph. More...

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

Public Member Functions
	MemoryGroup ()=default
	MemoryGroup (MemoryGroup &&)=default
size_t	getNumSuccessors () const
unsigned	getNumPredecessors () const
unsigned	getNumExecutingPredecessors () const
unsigned	getNumExecutedPredecessors () const
unsigned	getNumInstructions () const
unsigned	getNumExecuting () const
unsigned	getNumExecuted () const
const InstRef &	getCriticalMemoryInstruction () const
const CriticalDependency &	getCriticalPredecessor () const
void	addSuccessor (MemoryGroup *Group, bool IsDataDependent)
bool	isWaiting () const
bool	isPending () const
bool	isReady () const
bool	isExecuting () const
bool	isExecuted () const
void	onGroupIssued (const InstRef &IR, bool ShouldUpdateCriticalDep)
void	onGroupExecuted ()
void	onInstructionIssued (const InstRef &IR)
void	onInstructionExecuted (const InstRef &IR)
void	addInstruction ()
void	cycleEvent ()

Detailed Description

A node of a memory dependency graph.

A MemoryGroup describes a set of instructions with same memory dependencies.

By construction, instructions of a MemoryGroup don't depend on each other. At dispatch stage, instructions are mapped by the LSUnit to MemoryGroups. A Memory group identifier is then stored as a "token" in field Instruction::LSUTokenID of each dispatched instructions. That token is used internally by the LSUnit to track memory dependencies.

Definition at line 35 of file LSUnit.h.

Constructor & Destructor Documentation

MemoryGroup() [1/2]

llvm::mca::MemoryGroup::MemoryGroup ( )

default

MemoryGroup() [2/2]

llvm::mca::MemoryGroup::MemoryGroup ( MemoryGroup &&  )

default

Member Function Documentation

addInstruction()

void llvm::mca::MemoryGroup::addInstruction ( )

inline

Definition at line 178 of file LSUnit.h.

References assert(), and getNumSuccessors().

Referenced by llvm::mca::LSUnit::dispatch().

addSuccessor()

void llvm::mca::MemoryGroup::addSuccessor ( MemoryGroup *  Group, bool  IsDataDependent  )

inline

Definition at line 79 of file LSUnit.h.

References assert(), llvm::SmallVectorImpl< T >::emplace_back(), isExecuted(), isExecuting(), and onGroupIssued().

Referenced by llvm::mca::LSUnit::dispatch().

cycleEvent()

void llvm::mca::MemoryGroup::cycleEvent ( )

inline

Definition at line 183 of file LSUnit.h.

References llvm::mca::CriticalDependency::Cycles, and isWaiting().

getCriticalMemoryInstruction()

const InstRef & llvm::mca::MemoryGroup::getCriticalMemoryInstruction ( ) const

inline

Definition at line 72 of file LSUnit.h.

getCriticalPredecessor()

const CriticalDependency & llvm::mca::MemoryGroup::getCriticalPredecessor ( ) const

inline

Definition at line 75 of file LSUnit.h.

getNumExecuted()

unsigned llvm::mca::MemoryGroup::getNumExecuted ( ) const

inline

Definition at line 70 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::dump().

getNumExecutedPredecessors()

unsigned llvm::mca::MemoryGroup::getNumExecutedPredecessors ( ) const

inline

Definition at line 65 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::dump().

getNumExecuting()

unsigned llvm::mca::MemoryGroup::getNumExecuting ( ) const

inline

Definition at line 69 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::dump().

getNumExecutingPredecessors()

unsigned llvm::mca::MemoryGroup::getNumExecutingPredecessors ( ) const

inline

Definition at line 62 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::dump().

getNumInstructions()

unsigned llvm::mca::MemoryGroup::getNumInstructions ( ) const

inline

Definition at line 68 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::dump().

getNumPredecessors()

unsigned llvm::mca::MemoryGroup::getNumPredecessors ( ) const

inline

Definition at line 61 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::dump().

getNumSuccessors()

size_t llvm::mca::MemoryGroup::getNumSuccessors ( ) const

inline

Definition at line 58 of file LSUnit.h.

References llvm::SmallVectorBase< Size_T >::size().

Referenced by addInstruction(), and llvm::mca::LSUnitBase::hasDependentUsers().

isExecuted()

bool llvm::mca::MemoryGroup::isExecuted ( ) const

inline

Definition at line 110 of file LSUnit.h.

Referenced by addSuccessor(), llvm::mca::LSUnitBase::hasDependentUsers(), and onInstructionExecuted().

isExecuting()

bool llvm::mca::MemoryGroup::isExecuting ( ) const

inline

Definition at line 107 of file LSUnit.h.

Referenced by addSuccessor(), llvm::mca::LSUnit::dispatch(), and onInstructionIssued().

isPending()

bool llvm::mca::MemoryGroup::isPending ( ) const

inline

Definition at line 101 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::isPending().

isReady()

bool llvm::mca::MemoryGroup::isReady ( ) const

inline

Definition at line 106 of file LSUnit.h.

Referenced by llvm::mca::LSUnitBase::isReady(), onGroupExecuted(), onGroupIssued(), and onInstructionExecuted().

isWaiting()

bool llvm::mca::MemoryGroup::isWaiting ( ) const

inline

Definition at line 97 of file LSUnit.h.

Referenced by cycleEvent(), and llvm::mca::LSUnitBase::isWaiting().

onGroupExecuted()

void llvm::mca::MemoryGroup::onGroupExecuted ( )

inline

Definition at line 126 of file LSUnit.h.

References assert(), and isReady().

onGroupIssued()

void llvm::mca::MemoryGroup::onGroupIssued ( const InstRef &  IR, bool  ShouldUpdateCriticalDep  )

inline

Definition at line 112 of file LSUnit.h.

References assert(), llvm::mca::CriticalDependency::Cycles, llvm::mca::CriticalDependency::IID, IR, and isReady().

Referenced by addSuccessor().

onInstructionExecuted()

void llvm::mca::MemoryGroup::onInstructionExecuted ( const InstRef &  IR )

inline

Definition at line 160 of file LSUnit.h.

References assert(), llvm::mca::InstRef::getSourceIndex(), llvm::mca::InstRef::invalidate(), IR, isExecuted(), and isReady().

onInstructionIssued()

void llvm::mca::MemoryGroup::onInstructionIssued ( const InstRef &  IR )

inline

Definition at line 132 of file LSUnit.h.

References assert(), llvm::mca::Instruction::getCyclesLeft(), IR, and isExecuting().

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

• include/llvm/MCA/HardwareUnits/LSUnit.h