Itinerary data supplied by a subtarget to be used by a target. More...

#include "llvm/MC/MCInstrItineraries.h"

Collaboration diagram for llvm::InstrItineraryData:

[legend]

Public Member Functions
	InstrItineraryData ()=default

	InstrItineraryData (const MCSchedModel &SM, const InstrStage S, const unsigned OS, const unsigned *F)

bool	isEmpty () const
	Returns true if there are no itineraries. More...

bool	isEndMarker (unsigned ItinClassIndx) const
	Returns true if the index is for the end marker itinerary. More...

const InstrStage *	beginStage (unsigned ItinClassIndx) const
	Return the first stage of the itinerary. More...

const InstrStage *	endStage (unsigned ItinClassIndx) const
	Return the last+1 stage of the itinerary. More...

unsigned	getStageLatency (unsigned ItinClassIndx) const
	Return the total stage latency of the given class. More...

int	getOperandCycle (unsigned ItinClassIndx, unsigned OperandIdx) const
	Return the cycle for the given class and operand. More...

bool	hasPipelineForwarding (unsigned DefClass, unsigned DefIdx, unsigned UseClass, unsigned UseIdx) const
	Return true if there is a pipeline forwarding between instructions of itinerary classes DefClass and UseClasses so that value produced by an instruction of itinerary class DefClass, operand index DefIdx can be bypassed when it's read by an instruction of itinerary class UseClass, operand index UseIdx. More...

int	getOperandLatency (unsigned DefClass, unsigned DefIdx, unsigned UseClass, unsigned UseIdx) const
	Compute and return the use operand latency of a given itinerary class and operand index if the value is produced by an instruction of the specified itinerary class and def operand index. More...

int	getNumMicroOps (unsigned ItinClassIndx) const
	Return the number of micro-ops that the given class decodes to. More...

Public Attributes
MCSchedModel	SchedModel
	Basic machine properties. More...

const InstrStage *	Stages = nullptr
	Array of stages selected. More...

const unsigned *	OperandCycles = nullptr
	Array of operand cycles selected. More...

const unsigned *	Forwardings = nullptr
	Array of pipeline forwarding paths. More...

const InstrItinerary *	Itineraries
	Array of itineraries selected. More...

Detailed Description

Itinerary data supplied by a subtarget to be used by a target.

Definition at line 107 of file MCInstrItineraries.h.

Constructor & Destructor Documentation

◆ InstrItineraryData() [1/2]

llvm::InstrItineraryData::InstrItineraryData ( )

default

◆ InstrItineraryData() [2/2]

llvm::InstrItineraryData::InstrItineraryData	(	const MCSchedModel &	SM,
		const InstrStage *	S,
		const unsigned *	OS,
		const unsigned *	F
	)

inline

Definition at line 118 of file MCInstrItineraries.h.

Member Function Documentation

◆ beginStage()

const InstrStage* llvm::InstrItineraryData::beginStage ( unsigned ItinClassIndx ) const

inline

Return the first stage of the itinerary.

Definition at line 133 of file MCInstrItineraries.h.

References llvm::InstrItinerary::FirstStage.

Referenced by llvm::ScoreboardHazardRecognizer::EmitInstruction(), llvm::ScoreboardHazardRecognizer::getHazardType(), llvm::DFAPacketizer::getInsnInput(), llvm::MCSchedModel::getReciprocalThroughput(), getUnderlyingObjects(), llvm::HexagonInstrInfo::getUnits(), and llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

◆ endStage()

const InstrStage* llvm::InstrItineraryData::endStage ( unsigned ItinClassIndx ) const

inline

Return the last+1 stage of the itinerary.

Definition at line 139 of file MCInstrItineraries.h.

References llvm::InstrItinerary::LastStage.

Referenced by llvm::ScoreboardHazardRecognizer::EmitInstruction(), llvm::ScoreboardHazardRecognizer::getHazardType(), llvm::DFAPacketizer::getInsnInput(), llvm::MCSchedModel::getReciprocalThroughput(), getUnderlyingObjects(), and llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

◆ getNumMicroOps()

int llvm::InstrItineraryData::getNumMicroOps ( unsigned ItinClassIndx ) const

inline

Return the number of micro-ops that the given class decodes to.

Return -1 for classes that require dynamic lookup via TargetInstrInfo.

Definition at line 226 of file MCInstrItineraries.h.

References llvm::InstrItinerary::NumMicroOps.

Referenced by llvm::TargetSchedModel::getNumMicroOps(), llvm::ARMBaseInstrInfo::getNumMicroOps(), getNumMicroOpsSwiftLdSt(), and llvm::ARMBaseInstrInfo::getOperandLatency().

◆ getOperandCycle()

int llvm::InstrItineraryData::getOperandCycle	(	unsigned	ItinClassIndx,
		unsigned	OperandIdx
	)		const

inline

Return the cycle for the given class and operand.

Return -1 if no cycle is specified for the operand.

Definition at line 165 of file MCInstrItineraries.h.

References llvm::InstrItinerary::FirstOperandCycle, and llvm::InstrItinerary::LastOperandCycle.

Referenced by llvm::TargetSchedModel::computeOperandLatency(), llvm::PPCInstrInfo::getInstrLatency(), getItineraryLatency(), llvm::ARMBaseInstrInfo::getLDMVariableDefsSize(), llvm::ARMBaseInstrInfo::getNumMicroOps(), llvm::ARMBaseInstrInfo::getOperandLatency(), llvm::TargetInstrInfo::getOperandLatency(), llvm::ARMTargetLowering::getSchedulingPreference(), and llvm::TargetInstrInfo::hasLowDefLatency().

◆ getOperandLatency()

int llvm::InstrItineraryData::getOperandLatency	(	unsigned	DefClass,
		unsigned	DefIdx,
		unsigned	UseClass,
		unsigned	UseIdx
	)		const

inline

Compute and return the use operand latency of a given itinerary class and operand index if the value is produced by an instruction of the specified itinerary class and def operand index.

Definition at line 203 of file MCInstrItineraries.h.

Referenced by llvm::ARMBaseInstrInfo::getLDMVariableDefsSize(), and llvm::TargetInstrInfo::getOperandLatency().

◆ getStageLatency()

unsigned llvm::InstrItineraryData::getStageLatency ( unsigned ItinClassIndx ) const

inline

Return the total stage latency of the given class.

The latency is the maximum completion time for any stage in the itinerary. If no stages exist, it defaults to one cycle.

Definition at line 147 of file MCInstrItineraries.h.

References E, llvm::Latency, and llvm::max().

Referenced by llvm::TargetInstrInfo::getInstrLatency(), llvm::HexagonInstrInfo::getInstrTimingClassLatency(), and llvm::ARMBaseInstrInfo::getOperandLatency().

◆ hasPipelineForwarding()

bool llvm::InstrItineraryData::hasPipelineForwarding	(	unsigned	DefClass,
		unsigned	DefIdx,
		unsigned	UseClass,
		unsigned	UseIdx
	)		const

inline

Return true if there is a pipeline forwarding between instructions of itinerary classes DefClass and UseClasses so that value produced by an instruction of itinerary class DefClass, operand index DefIdx can be bypassed when it's read by an instruction of itinerary class UseClass, operand index UseIdx.

Definition at line 182 of file MCInstrItineraries.h.

References llvm::InstrItinerary::FirstOperandCycle, and llvm::InstrItinerary::LastOperandCycle.

Referenced by llvm::ARMBaseInstrInfo::getLDMVariableDefsSize().

◆ isEmpty()

bool llvm::InstrItineraryData::isEmpty ( ) const

inline

Returns true if there are no itineraries.

Definition at line 124 of file MCInstrItineraries.h.

Referenced by llvm::TargetInstrInfo::computeDefOperandLatency(), llvm::ScheduleDAGSDNodes::computeLatency(), llvm::ScoreboardHazardRecognizer::EmitInstruction(), llvm::ScoreboardHazardRecognizer::getHazardType(), llvm::TargetInstrInfo::getInstrLatency(), llvm::ARMBaseInstrInfo::getNumMicroOps(), llvm::TargetInstrInfo::getNumMicroOps(), llvm::ARMBaseInstrInfo::getOperandLatency(), llvm::TargetInstrInfo::getOperandLatency(), llvm::ARMTargetLowering::getSchedulingPreference(), llvm::TargetSchedModel::hasInstrItineraries(), llvm::TargetInstrInfo::hasLowDefLatency(), and llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

◆ isEndMarker()

bool llvm::InstrItineraryData::isEndMarker ( unsigned ItinClassIndx ) const

inline

Returns true if the index is for the end marker itinerary.

Definition at line 127 of file MCInstrItineraries.h.

Referenced by llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

Member Data Documentation

◆ Forwardings

const unsigned* llvm::InstrItineraryData::Forwardings = nullptr

Array of pipeline forwarding paths.

Definition at line 113 of file MCInstrItineraries.h.

◆ Itineraries

const InstrItinerary* llvm::InstrItineraryData::Itineraries

Initial value:

=

nullptr

Array of itineraries selected.

Definition at line 114 of file MCInstrItineraries.h.

Referenced by llvm::TargetInstrInfo::getNumMicroOps(), and llvm::HexagonSubtarget::HexagonSubtarget().

◆ OperandCycles

const unsigned* llvm::InstrItineraryData::OperandCycles = nullptr

Array of operand cycles selected.

Definition at line 112 of file MCInstrItineraries.h.

◆ SchedModel

MCSchedModel llvm::InstrItineraryData::SchedModel

Initial value:

=

MCSchedModel::GetDefaultSchedModel()

Basic machine properties.

Definition at line 109 of file MCInstrItineraries.h.

Referenced by llvm::TargetInstrInfo::computeDefOperandLatency(), llvm::ResourcePriorityQueue::reserveResources(), and llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

◆ Stages

const InstrStage* llvm::InstrItineraryData::Stages = nullptr

Array of stages selected.

Definition at line 111 of file MCInstrItineraries.h.

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

include/llvm/MC/MCInstrItineraries.h

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ InstrItineraryData() [1/2]

◆ InstrItineraryData() [2/2]

Member Function Documentation

◆ beginStage()

◆ endStage()

◆ getNumMicroOps()

◆ getOperandCycle()

◆ getOperandLatency()

◆ getStageLatency()

◆ hasPipelineForwarding()

◆ isEmpty()

◆ isEndMarker()

Member Data Documentation

◆ Forwardings

◆ Itineraries

◆ OperandCycles

◆ SchedModel

◆ Stages