LLVM  14.0.0git
Public Member Functions | Protected Member Functions | List of all members
llvm::PPCPostRASchedStrategy Class Reference

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

#include "Target/PowerPC/PPCMachineScheduler.h"

Inheritance diagram for llvm::PPCPostRASchedStrategy:
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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. More...
 
bool shouldTrackPressure () const override
 PostRA scheduling does not track pressure. More...
 
void registerRoots () override
 Notify this strategy that all roots have been released (including those that depend on EntrySU or ExitSU). More...
 
void scheduleTree (unsigned SubtreeID) override
 Scheduler callback to notify that a new subtree is scheduled. More...
 
void schedNode (SUnit *SU, bool IsTopNode) override
 Called after ScheduleDAGMI has scheduled an instruction and updated scheduled/remaining flags in the DAG nodes. More...
 
void releaseTopNode (SUnit *SU) override
 When all predecessor dependencies have been resolved, free this node for top-down scheduling. More...
 
void releaseBottomNode (SUnit *SU) override
 When all successor dependencies have been resolved, free this node for bottom-up scheduling. More...
 
- 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. More...
 
virtual bool doMBBSchedRegionsTopDown () const
 

Protected Member Functions

void initialize (ScheduleDAGMI *Dag) override
 Initialize the strategy after building the DAG for a new region. More...
 
SUnitpickNode (bool &IsTopNode) override
 Pick the next node to schedule. More...
 
void enterMBB (MachineBasicBlock *MBB) override
 Tell the strategy that MBB is about to be processed. More...
 
void leaveMBB () override
 Tell the strategy that current MBB is done. More...
 
bool tryCandidate (SchedCandidate &Cand, SchedCandidate &TryCand) override
 Apply a set of heuristics to a new candidate for PostRA scheduling. More...
 
bool biasAddiCandidate (SchedCandidate &Cand, SchedCandidate &TryCand) const
 
- Protected Member Functions inherited from llvm::PostGenericScheduler
void pickNodeFromQueue (SchedCandidate &Cand)
 
- Protected Member Functions inherited from llvm::GenericSchedulerBase
 GenericSchedulerBase (const MachineSchedContext *C)
 
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. More...
 
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, NextDefUse,
  NodeOrder
}
 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
ScheduleDAGMIDAG = nullptr
 
SchedBoundary Top
 
SmallVector< SUnit *, 8 > BotRoots
 
- Protected Attributes inherited from llvm::GenericSchedulerBase
const MachineSchedContextContext
 
const TargetSchedModelSchedModel = nullptr
 
const TargetRegisterInfoTRI = nullptr
 
SchedRemainder Rem
 

Detailed Description

A MachineSchedStrategy implementation for PowerPC post RA scheduling.

Definition at line 36 of file PPCMachineScheduler.h.

Constructor & Destructor Documentation

◆ PPCPostRASchedStrategy()

llvm::PPCPostRASchedStrategy::PPCPostRASchedStrategy ( const MachineSchedContext C)
inline

Definition at line 38 of file PPCMachineScheduler.h.

Member Function Documentation

◆ biasAddiCandidate()

bool PPCPostRASchedStrategy::biasAddiCandidate ( SchedCandidate Cand,
SchedCandidate TryCand 
) const
protected

◆ enterMBB()

void PPCPostRASchedStrategy::enterMBB ( MachineBasicBlock MBB)
overrideprotectedvirtual

Tell the strategy that MBB is about to be processed.

Reimplemented from llvm::MachineSchedStrategy.

Definition at line 232 of file PPCMachineScheduler.cpp.

References llvm::MachineSchedStrategy::enterMBB(), and MBB.

◆ initialize()

void PPCPostRASchedStrategy::initialize ( ScheduleDAGMI DAG)
overrideprotectedvirtual

Initialize the strategy after building the DAG for a new region.

Reimplemented from llvm::PostGenericScheduler.

Definition at line 242 of file PPCMachineScheduler.cpp.

References llvm::tgtok::Dag, and llvm::PostGenericScheduler::initialize().

◆ leaveMBB()

void PPCPostRASchedStrategy::leaveMBB ( )
overrideprotectedvirtual

Tell the strategy that current MBB is done.

Reimplemented from llvm::MachineSchedStrategy.

Definition at line 237 of file PPCMachineScheduler.cpp.

References llvm::MachineSchedStrategy::leaveMBB().

◆ pickNode()

SUnit * PPCPostRASchedStrategy::pickNode ( bool &  IsTopNode)
overrideprotectedvirtual

Pick the next node to schedule.

Reimplemented from llvm::PostGenericScheduler.

Definition at line 247 of file PPCMachineScheduler.cpp.

References llvm::PostGenericScheduler::pickNode().

◆ tryCandidate()

bool PPCPostRASchedStrategy::tryCandidate ( SchedCandidate Cand,
SchedCandidate TryCand 
)
overrideprotectedvirtual

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