llvm::mca::InstrumentManager Class Reference

This class allows targets to optionally customize the logic that resolves scheduling class IDs. More...

#include "llvm/MCA/CustomBehaviour.h"

Inheritance diagram for llvm::mca::InstrumentManager:

Public Member Functions
	InstrumentManager (const MCSubtargetInfo &STI, const MCInstrInfo &MCII)
virtual	~InstrumentManager ()=default
virtual bool	shouldIgnoreInstruments () const
	Returns true if llvm-mca should ignore instruments.
virtual bool	supportsInstrumentType (StringRef Type) const
virtual UniqueInstrument	createInstrument (StringRef Desc, StringRef Data)
	Allocate an Instrument, and return a unique pointer to it.
virtual SmallVector< UniqueInstrument >	createInstruments (const MCInst &Inst)
	Return a list of unique pointers to Instruments, where each Instrument is allocated by this function.
virtual unsigned	getSchedClassID (const MCInstrInfo &MCII, const MCInst &MCI, const SmallVector< Instrument * > &IVec) const
	Given an MCInst and a vector of Instrument, a target can return a SchedClassID.

Protected Attributes
const MCSubtargetInfo &	STI
const MCInstrInfo &	MCII

Detailed Description

This class allows targets to optionally customize the logic that resolves scheduling class IDs.

Targets can use information encoded in Instrument objects to make more informed scheduling decisions.

Definition at line 141 of file CustomBehaviour.h.

Constructor & Destructor Documentation

InstrumentManager()

llvm::mca::InstrumentManager::InstrumentManager ( const MCSubtargetInfo &  STI, const MCInstrInfo &  MCII  )

inline

Definition at line 147 of file CustomBehaviour.h.

~InstrumentManager()

virtual llvm::mca::InstrumentManager::~InstrumentManager ( )

virtualdefault

Member Function Documentation

createInstrument()

UniqueInstrument llvm::mca::InstrumentManager::createInstrument ( llvm::StringRef  Desc, llvm::StringRef  Data  )

virtual

Allocate an Instrument, and return a unique pointer to it.

This function may be useful to create instruments coming from comments in the assembly. See createInstruments to create Instruments from MCInst

Reimplemented in llvm::mca::RISCVInstrumentManager.

Definition at line 45 of file CustomBehaviour.cpp.

References llvm::Data.

createInstruments()

SmallVector< UniqueInstrument > llvm::mca::InstrumentManager::createInstruments ( const MCInst &  Inst )

virtual

Return a list of unique pointers to Instruments, where each Instrument is allocated by this function.

See createInstrument to create Instrument from a description and data.

Reimplemented in llvm::mca::RISCVInstrumentManager.

Definition at line 51 of file CustomBehaviour.cpp.

getSchedClassID()

unsigned llvm::mca::InstrumentManager::getSchedClassID ( const MCInstrInfo &  MCII, const MCInst &  MCI, const SmallVector< Instrument * > &  IVec  ) const

virtual

Given an MCInst and a vector of Instrument, a target can return a SchedClassID.

This can be used by a subtarget to return a PseudoInstruction SchedClassID instead of the one that belongs to the BaseInstruction This can be useful when a BaseInstruction does not convey the correct scheduling information without additional data. By default, it returns the SchedClassID that belongs to MCI.

Reimplemented in llvm::mca::RISCVInstrumentManager.

Definition at line 55 of file CustomBehaviour.cpp.

References llvm::MCInstrInfo::get(), llvm::MCInst::getOpcode(), llvm::MCInstrDesc::getSchedClass(), and MCII.

shouldIgnoreInstruments()

virtual bool llvm::mca::InstrumentManager::shouldIgnoreInstruments ( ) const

inlinevirtual

Returns true if llvm-mca should ignore instruments.

Reimplemented in llvm::mca::RISCVInstrumentManager.

Definition at line 153 of file CustomBehaviour.h.

supportsInstrumentType()

virtual bool llvm::mca::InstrumentManager::supportsInstrumentType ( StringRef  Type ) const

inlinevirtual

Reimplemented in llvm::mca::RISCVInstrumentManager.

Definition at line 157 of file CustomBehaviour.h.

Member Data Documentation

MCII

const MCInstrInfo& llvm::mca::InstrumentManager::MCII

protected

Definition at line 144 of file CustomBehaviour.h.

Referenced by getSchedClassID(), and llvm::mca::RISCVInstrumentManager::getSchedClassID().

STI

const MCSubtargetInfo& llvm::mca::InstrumentManager::STI

protected

Definition at line 143 of file CustomBehaviour.h.

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

• include/llvm/MCA/CustomBehaviour.h
• lib/MCA/CustomBehaviour.cpp