LLVM: llvm::GenericSchedulerBase Class Reference

LLVM API Documentation

#include <MachineScheduler.h>

Inheritance diagram for llvm::GenericSchedulerBase:

Inheritance graph

Collaboration diagram for llvm::GenericSchedulerBase:

Collaboration graph

List of all members.

Classes
struct	CandPolicy
	Policy for scheduling the next instruction in the candidate's zone. More...
struct	SchedCandidate
struct	SchedResourceDelta
	Status of an instruction's critical resource consumption. More...
Public Types
enum	CandReason { NoCand, PhysRegCopy, RegExcess, RegCritical, Stall, Cluster, Weak, RegMax, ResourceReduce, ResourceDemand, BotHeightReduce, BotPathReduce, TopDepthReduce, TopPathReduce, NextDefUse, NodeOrder }
Static Public Member Functions
static const char *	getReasonStr (GenericSchedulerBase::CandReason Reason)
Protected Member Functions
	GenericSchedulerBase (const MachineSchedContext *C)
void	setPolicy (CandPolicy &Policy, bool IsPostRA, SchedBoundary &CurrZone, SchedBoundary *OtherZone)
void	traceCandidate (const SchedCandidate &Cand)
Protected Attributes
const MachineSchedContext *	Context
const TargetSchedModel *	SchedModel
const TargetRegisterInfo *	TRI
SchedRemainder	Rem

Detailed Description

Base class for GenericScheduler. This class maintains information about scheduling candidates based on TargetSchedModel making it easy to implement heuristics for either preRA or postRA scheduling.

Definition at line 743 of file MachineScheduler.h.

Member Enumeration Documentation

enum llvm::GenericSchedulerBase::CandReason

Represent the type of SchedCandidate found within a single queue. pickNodeBidirectional depends on these listed by decreasing priority.

Enumerator:

NoCand
PhysRegCopy
RegExcess
RegCritical
Stall
Cluster
Weak
RegMax
ResourceReduce
ResourceDemand
BotHeightReduce
BotPathReduce
TopDepthReduce
TopPathReduce
NextDefUse
NodeOrder

Definition at line 747 of file MachineScheduler.h.

Constructor & Destructor Documentation

llvm::GenericSchedulerBase::GenericSchedulerBase ( const MachineSchedContext * C ) [inline, protected]

Definition at line 832 of file MachineScheduler.h.

Member Function Documentation

const char * GenericSchedulerBase::getReasonStr ( GenericSchedulerBase::CandReason Reason ) [static]

Definition at line 2207 of file MachineScheduler.cpp.

References BotHeightReduce, BotPathReduce, Cluster, llvm_unreachable, NextDefUse, NoCand, NodeOrder, PhysRegCopy, RegCritical, RegExcess, RegMax, ResourceDemand, ResourceReduce, Stall, TopDepthReduce, TopPathReduce, and Weak.

Referenced by traceCandidate(), and tracePick().

void GenericSchedulerBase::setPolicy	(	CandPolicy &	Policy,
		bool	IsPostRA,
		SchedBoundary &	CurrZone,
		SchedBoundary *	OtherZone
	)		`[protected]`

Set the CandPolicy given a scheduling zone given the current resources and latencies inside and outside the zone.

Definition at line 2134 of file MachineScheduler.cpp.

References llvm::SchedBoundary::Available, llvm::SchedRemainder::CriticalPath, llvm::dbgs(), DEBUG, llvm::GenericSchedulerBase::CandPolicy::DemandResIdx, llvm::ReadyQueue::elements(), llvm::SchedBoundary::findMaxLatency(), llvm::SchedBoundary::getCurrCycle(), llvm::SchedBoundary::getDependentLatency(), llvm::TargetSchedModel::getLatencyFactor(), llvm::ReadyQueue::getName(), llvm::SchedBoundary::getOtherResourceCount(), llvm::TargetSchedModel::getResourceName(), llvm::SchedBoundary::getZoneCritResIdx(), llvm::TargetSchedModel::hasInstrSchedModel(), llvm::SchedBoundary::isResourceLimited(), llvm::SchedBoundary::Pending, llvm::GenericSchedulerBase::CandPolicy::ReduceLatency, llvm::GenericSchedulerBase::CandPolicy::ReduceResIdx, Rem, and SchedModel.

Referenced by llvm::PostGenericScheduler::pickNode(), and llvm::GenericScheduler::pickNodeBidirectional().

void GenericSchedulerBase::traceCandidate ( const SchedCandidate & Cand ) [protected]

Definition at line 2230 of file MachineScheduler.cpp.

References BotHeightReduce, BotPathReduce, llvm::RegPressureDelta::CriticalMax, llvm::RegPressureDelta::CurrentMax, llvm::dbgs(), llvm::GenericSchedulerBase::CandPolicy::DemandResIdx, llvm::RegPressureDelta::Excess, llvm::SUnit::getDepth(), llvm::SUnit::getHeight(), llvm::TargetSchedModel::getProcResource(), llvm::PressureChange::getPSet(), getReasonStr(), llvm::TargetRegisterInfo::getRegPressureSetName(), llvm::PressureChange::getUnitInc(), llvm::PressureChange::isValid(), llvm::MCProcResourceDesc::Name, llvm::SUnit::NodeNum, P, llvm::GenericSchedulerBase::SchedCandidate::Policy, llvm::GenericSchedulerBase::SchedCandidate::Reason, llvm::GenericSchedulerBase::CandPolicy::ReduceResIdx, RegCritical, RegExcess, RegMax, ResourceDemand, ResourceReduce, llvm::GenericSchedulerBase::SchedCandidate::RPDelta, SchedModel, llvm::GenericSchedulerBase::SchedCandidate::SU, TopDepthReduce, TopPathReduce, and TRI.

Referenced by llvm::GenericScheduler::pickNodeFromQueue(), and llvm::PostGenericScheduler::pickNodeFromQueue().

Member Data Documentation

const MachineSchedContext* llvm::GenericSchedulerBase::Context [protected]

Definition at line 826 of file MachineScheduler.h.

Referenced by llvm::GenericScheduler::initPolicy().

SchedRemainder llvm::GenericSchedulerBase::Rem [protected]

Definition at line 830 of file MachineScheduler.h.

Referenced by llvm::GenericScheduler::checkAcyclicLatency(), llvm::GenericScheduler::initialize(), llvm::PostGenericScheduler::initialize(), llvm::GenericScheduler::registerRoots(), llvm::PostGenericScheduler::registerRoots(), setPolicy(), and llvm::GenericScheduler::tryCandidate().

const TargetSchedModel* llvm::GenericSchedulerBase::SchedModel [protected]

Definition at line 827 of file MachineScheduler.h.

Referenced by llvm::GenericScheduler::checkAcyclicLatency(), llvm::GenericScheduler::initialize(), llvm::PostGenericScheduler::initialize(), llvm::GenericScheduler::pickNodeFromQueue(), llvm::PostGenericScheduler::pickNodeFromQueue(), setPolicy(), traceCandidate(), and llvm::GenericScheduler::tryCandidate().

const TargetRegisterInfo* llvm::GenericSchedulerBase::TRI [protected]

Definition at line 828 of file MachineScheduler.h.

Referenced by llvm::GenericScheduler::initialize(), llvm::PostGenericScheduler::initialize(), llvm::GenericScheduler::reschedulePhysRegCopies(), traceCandidate(), and llvm::GenericScheduler::tryCandidate().

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