A MachineSchedStrategy implementation for PowerPC post RA scheduling. More...

#include "Target/PowerPC/PPCMachineScheduler.h"

Inheritance diagram for llvm::PPCPostRASchedStrategy:

Public Member Functions
	PPCPostRASchedStrategy (const MachineSchedContext *C)
Public Member Functions inherited from llvm::PostGenericScheduler
	PostGenericScheduler (const MachineSchedContext *C)
	~PostGenericScheduler () override=default
void	initPolicy (MachineBasicBlock::iterator Begin, MachineBasicBlock::iterator End, unsigned NumRegionInstrs) override
	Optionally override the per-region scheduling policy.
bool	shouldTrackPressure () const override
	PostRA scheduling does not track pressure.
void	registerRoots () override
	Notify this strategy that all roots have been released (including those that depend on EntrySU or ExitSU).
SUnit *	pickNodeBidirectional (bool &IsTopNode)
	Pick the best candidate node from either the top or bottom queue.
void	scheduleTree (unsigned SubtreeID) override
	Scheduler callback to notify that a new subtree is scheduled.
void	schedNode (SUnit *SU, bool IsTopNode) override
	Called after ScheduleDAGMI has scheduled an instruction and updated scheduled/remaining flags in the DAG nodes.
void	releaseTopNode (SUnit *SU) override
	When all predecessor dependencies have been resolved, free this node for top-down scheduling.
void	releaseBottomNode (SUnit *SU) override
	When all successor dependencies have been resolved, free this node for bottom-up scheduling.
Public Member Functions inherited from llvm::MachineSchedStrategy
virtual	~MachineSchedStrategy ()=default
virtual void	dumpPolicy () const
virtual bool	shouldTrackLaneMasks () const
	Returns true if lanemasks should be tracked.
virtual bool	doMBBSchedRegionsTopDown () const

Protected Member Functions
void	initialize (ScheduleDAGMI *Dag) override
	Initialize the strategy after building the DAG for a new region.
SUnit *	pickNode (bool &IsTopNode) override
	Pick the next node to schedule.
void	enterMBB (MachineBasicBlock *MBB) override
	Tell the strategy that MBB is about to be processed.
void	leaveMBB () override
	Tell the strategy that current MBB is done.
bool	tryCandidate (SchedCandidate &Cand, SchedCandidate &TryCand) override
	Apply a set of heuristics to a new candidate for PostRA scheduling.
bool	biasAddiCandidate (SchedCandidate &Cand, SchedCandidate &TryCand) const
Protected Member Functions inherited from llvm::PostGenericScheduler
void	pickNodeFromQueue (SchedBoundary &Zone, SchedCandidate &Cand)
Protected Member Functions inherited from llvm::GenericSchedulerBase
	GenericSchedulerBase (const MachineSchedContext *C)
LLVM_ABI void	setPolicy (CandPolicy &Policy, bool IsPostRA, SchedBoundary &CurrZone, SchedBoundary *OtherZone)
	Set the CandPolicy given a scheduling zone given the current resources and latencies inside and outside the zone.
MachineSchedPolicy	getPolicy () const override
void	traceCandidate (const SchedCandidate &Cand)

Additional Inherited Members
Public Types inherited from llvm::GenericSchedulerBase
enum	CandReason : uint8_t { NoCand , Only1 , PhysReg , RegExcess , RegCritical , Stall , Cluster , Weak , RegMax , ResourceReduce , ResourceDemand , BotHeightReduce , BotPathReduce , TopDepthReduce , TopPathReduce , NodeOrder , FirstValid }
	Represent the type of SchedCandidate found within a single queue. More...
Static Public Member Functions inherited from llvm::GenericSchedulerBase
static const char *	getReasonStr (GenericSchedulerBase::CandReason Reason)
Protected Attributes inherited from llvm::PostGenericScheduler
ScheduleDAGMI *	DAG = nullptr
SchedBoundary	Top
SchedBoundary	Bot
SchedCandidate	TopCand
	Candidate last picked from Top boundary.
SchedCandidate	BotCand
	Candidate last picked from Bot boundary.
unsigned	TopClusterID
unsigned	BotClusterID
Protected Attributes inherited from llvm::GenericSchedulerBase
const MachineSchedContext *	Context
const TargetSchedModel *	SchedModel = nullptr
const TargetRegisterInfo *	TRI = nullptr
unsigned	TopIdx = 0
unsigned	BotIdx = 0
unsigned	NumRegionInstrs = 0
MachineSchedPolicy	RegionPolicy
SchedRemainder	Rem