#include <MCInstrItineraries.h>

Collaboration diagram for llvm::InstrItineraryData:

Public Member Functions
	InstrItineraryData ()
	InstrItineraryData (const MCSchedModel SM, const InstrStage S, const unsigned OS, const unsigned F)
bool	isEmpty () const
bool	isEndMarker (unsigned ItinClassIndx) const
const InstrStage *	beginStage (unsigned ItinClassIndx) const
const InstrStage *	endStage (unsigned ItinClassIndx) const
unsigned	getStageLatency (unsigned ItinClassIndx) const
int	getOperandCycle (unsigned ItinClassIndx, unsigned OperandIdx) const
bool	hasPipelineForwarding (unsigned DefClass, unsigned DefIdx, unsigned UseClass, unsigned UseIdx) const
int	getOperandLatency (unsigned DefClass, unsigned DefIdx, unsigned UseClass, unsigned UseIdx) const
int	getNumMicroOps (unsigned ItinClassIndx) const
Public Attributes
const MCSchedModel *	SchedModel
	Basic machine properties.
const InstrStage *	Stages
	Array of stages selected.
const unsigned *	OperandCycles
	Array of operand cycles selected.
const unsigned *	Forwardings
	Array of pipeline forwarding pathes.
const InstrItinerary *	Itineraries
	Array of itineraries selected.

Detailed Description

Instruction itinerary Data - Itinerary data supplied by a subtarget to be used by a target.

Definition at line 111 of file MCInstrItineraries.h.

Constructor & Destructor Documentation

llvm::InstrItineraryData::InstrItineraryData ( ) [inline]

Ctors.

Definition at line 121 of file MCInstrItineraries.h.

llvm::InstrItineraryData::InstrItineraryData	(	const MCSchedModel *	SM,
		const InstrStage *	S,
		const unsigned *	OS,
		const unsigned *	F
	)		`[inline]`

Definition at line 125 of file MCInstrItineraries.h.

Member Function Documentation

const InstrStage* llvm::InstrItineraryData::beginStage ( unsigned ItinClassIndx ) const [inline]

beginStage - Return the first stage of the itinerary.

Definition at line 144 of file MCInstrItineraries.h.

References llvm::InstrItinerary::FirstStage, Itineraries, and Stages.

Referenced by llvm::DFAPacketizer::canReserveResources(), llvm::ScoreboardHazardRecognizer::EmitInstruction(), llvm::ScoreboardHazardRecognizer::getHazardType(), getStageLatency(), llvm::HexagonMCInst::getUnits(), llvm::DFAPacketizer::reserveResources(), and llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

const InstrStage* llvm::InstrItineraryData::endStage ( unsigned ItinClassIndx ) const [inline]

endStage - Return the last+1 stage of the itinerary.

Definition at line 151 of file MCInstrItineraries.h.

References Itineraries, llvm::InstrItinerary::LastStage, and Stages.

Referenced by llvm::ScoreboardHazardRecognizer::EmitInstruction(), llvm::ScoreboardHazardRecognizer::getHazardType(), getStageLatency(), and llvm::ScoreboardHazardRecognizer::ScoreboardHazardRecognizer().

int llvm::InstrItineraryData::getNumMicroOps ( unsigned ItinClassIndx ) const [inline]

getNumMicroOps - 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 248 of file MCInstrItineraries.h.

References isEmpty(), Itineraries, and llvm::InstrItinerary::NumMicroOps.

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

int llvm::InstrItineraryData::getOperandCycle	(	unsigned	ItinClassIndx,
		unsigned	OperandIdx
	)		const `[inline]`

getOperandCycle - Return the cycle for the given class and operand. Return -1 if no cycle is specified for the operand.

Definition at line 186 of file MCInstrItineraries.h.

References llvm::InstrItinerary::FirstOperandCycle, isEmpty(), Itineraries, llvm::InstrItinerary::LastOperandCycle, and OperandCycles.

Referenced by llvm::TargetSchedModel::computeOperandLatency(), llvm::TargetInstrInfo::computeOperandLatency(), getOperandLatency(), llvm::ARMBaseInstrInfo::getOperandLatency(), llvm::TargetInstrInfo::getOperandLatency(), llvm::ARMTargetLowering::getSchedulingPreference(), and llvm::TargetInstrInfo::hasLowDefLatency().

int llvm::InstrItineraryData::getOperandLatency	(	unsigned	DefClass,
		unsigned	DefIdx,
		unsigned	UseClass,
		unsigned	UseIdx
	)		const `[inline]`

getOperandLatency - 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 224 of file MCInstrItineraries.h.

References getOperandCycle(), hasPipelineForwarding(), and isEmpty().

Referenced by llvm::TargetInstrInfo::getOperandLatency().

unsigned llvm::InstrItineraryData::getStageLatency ( unsigned ItinClassIndx ) const [inline]

getStageLatency - Return the total stage latency of the given class. The latency is the maximum completion time for any stage in the itinerary.

InstrStages override the itinerary's MinLatency property. In fact, if the stage latencies, which may be zero, are less than MinLatency, getStageLatency returns a value less than MinLatency.

If no stages exist, MinLatency is used. If MinLatency is invalid (<0), then it defaults to one cycle.

Definition at line 166 of file MCInstrItineraries.h.

References beginStage(), endStage(), isEmpty(), llvm::MCSchedModel::MinLatency, and SchedModel.

Referenced by llvm::TargetInstrInfo::getInstrLatency().

bool llvm::InstrItineraryData::hasPipelineForwarding	(	unsigned	DefClass,
		unsigned	DefIdx,
		unsigned	UseClass,
		unsigned	UseIdx
	)		const `[inline]`

hasPipelineForwarding - 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 203 of file MCInstrItineraries.h.

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

Referenced by getOperandLatency().

bool llvm::InstrItineraryData::isEmpty ( ) const [inline]

isEmpty - Returns true if there are no itineraries.

Definition at line 132 of file MCInstrItineraries.h.

References Itineraries.

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