LLVM 20.0.0git
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
llvm::GCNSchedStage Class Reference

#include "Target/AMDGPU/GCNSchedStrategy.h"

Inheritance diagram for llvm::GCNSchedStage:
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Public Member Functions

virtual bool initGCNSchedStage ()
 
virtual void finalizeGCNSchedStage ()
 
virtual bool initGCNRegion ()
 
void setupNewBlock ()
 
void finalizeGCNRegion ()
 
void checkScheduling ()
 
ScheduleMetrics getScheduleMetrics (const std::vector< SUnit > &InputSchedule)
 
ScheduleMetrics getScheduleMetrics (const GCNScheduleDAGMILive &DAG)
 
unsigned computeSUnitReadyCycle (const SUnit &SU, unsigned CurrCycle, DenseMap< unsigned, unsigned > &ReadyCycles, const TargetSchedModel &SM)
 
virtual bool shouldRevertScheduling (unsigned WavesAfter)
 
bool isRegionWithExcessRP () const
 
bool mayCauseSpilling (unsigned WavesAfter)
 
void revertScheduling ()
 
void advanceRegion ()
 
virtual ~GCNSchedStage ()=default
 

Protected Member Functions

 GCNSchedStage (GCNSchedStageID StageID, GCNScheduleDAGMILive &DAG)
 

Protected Attributes

GCNScheduleDAGMILive & DAG
 
GCNSchedStrategy & S
 
MachineFunction & MF
 
SIMachineFunctionInfo & MFI
 
const GCNSubtarget & ST
 
const GCNSchedStageID StageID
 
MachineBasicBlock * CurrentMBB = nullptr
 
unsigned RegionIdx = 0
 
std::vector< MachineInstr * > Unsched
 
GCNRegPressure PressureBefore
 
GCNRegPressure PressureAfter
 
std::vector< std::unique_ptr< ScheduleDAGMutation > > SavedMutations
 

Detailed Description

Definition at line 245 of file GCNSchedStrategy.h.

Constructor & Destructor Documentation

◆ GCNSchedStage()

GCNSchedStage::GCNSchedStage ( GCNSchedStageID  StageID,
GCNScheduleDAGMILive &  DAG 
)
protected

Definition at line 780 of file GCNSchedStrategy.cpp.

◆ ~GCNSchedStage()

virtual llvm::GCNSchedStage::~GCNSchedStage ( )
virtualdefault

Member Function Documentation

◆ advanceRegion()

void llvm::GCNSchedStage::advanceRegion ( )
inline

Definition at line 320 of file GCNSchedStrategy.h.

References RegionIdx.

◆ checkScheduling()

void GCNSchedStage::checkScheduling ( )

Definition at line 1015 of file GCNSchedStrategy.cpp.

References DAG, llvm::dbgs(), llvm::GCNSubtarget::getAddressableNumArchVGPRs(), llvm::GCNRegPressure::getAGPRNum(), llvm::GCNSubtarget::getMaxNumSGPRs(), llvm::GCNSubtarget::getMaxNumVGPRs(), llvm::SIMachineFunctionInfo::getMinAllowedOccupancy(), llvm::GCNRegPressure::getOccupancy(), llvm::AMDGPUSubtarget::getOccupancyWithLocalMemSize(), llvm::GCNRegPressure::getSGPRNum(), llvm::GCNSchedStrategy::getTargetOccupancy(), llvm::GCNRegPressure::getVGPRNum(), llvm::GCNSubtarget::hasGFX90AInsts(), llvm::SIMachineFunctionInfo::limitOccupancy(), LLVM_DEBUG, MF, MFI, PressureAfter, PressureBefore, llvm::print(), RegionIdx, llvm::BitVector::reset(), revertScheduling(), S, llvm::GCNSchedStrategy::SGPRCriticalLimit, shouldRevertScheduling(), ST, and llvm::GCNSchedStrategy::VGPRCriticalLimit.

Referenced by finalizeGCNRegion().

◆ computeSUnitReadyCycle()

unsigned GCNSchedStage::computeSUnitReadyCycle ( const SUnit &  SU,
unsigned  CurrCycle,
DenseMap< unsigned, unsigned > &  ReadyCycles,
const TargetSchedModel &  SM 
)

Definition at line 1092 of file GCNSchedStrategy.cpp.

References D, DAG, DefMI, llvm::ScheduleDAGInstrs::getSUnit(), llvm::Latency, llvm::SUnit::NodeNum, and llvm::SUnit::Preds.

Referenced by getScheduleMetrics().

◆ finalizeGCNRegion()

void GCNSchedStage::finalizeGCNRegion ( )

Definition at line 997 of file GCNSchedStrategy.cpp.

References checkScheduling(), DAG, llvm::ScheduleDAGInstrs::exitRegion(), llvm::GCNSchedStrategy::HasHighPressure, llvm::ScheduleDAGMI::Mutations, llvm::ScheduleDAGInstrs::RegionBegin, llvm::ScheduleDAGInstrs::RegionEnd, RegionIdx, S, SavedMutations, StageID, and llvm::UnclusteredHighRPReschedule.

◆ finalizeGCNSchedStage()

void GCNSchedStage::finalizeGCNSchedStage ( )
virtual

Reimplemented in llvm::UnclusteredHighRPStage.

Definition at line 871 of file GCNSchedStrategy.cpp.

References DAG, llvm::dbgs(), llvm::ScheduleDAGMI::finishBlock(), LLVM_DEBUG, and StageID.

Referenced by llvm::UnclusteredHighRPStage::finalizeGCNSchedStage().

◆ getScheduleMetrics() [1/2]

ScheduleMetrics GCNSchedStage::getScheduleMetrics ( const GCNScheduleDAGMILive &  DAG)

Definition at line 1170 of file GCNSchedStrategy.cpp.

References computeSUnitReadyCycle(), DAG, llvm::dbgs(), llvm::SUnit::getInstr(), llvm::GCNSubtarget::getInstrInfo(), llvm::SIInstrInfo::getSchedModel(), llvm::ScheduleDAGInstrs::getSUnit(), LLVM_DEBUG, MI, printScheduleModel(), llvm::ScheduleMetrics::ScaleFactor, and ST.

◆ getScheduleMetrics() [2/2]

ScheduleMetrics GCNSchedStage::getScheduleMetrics ( const std::vector< SUnit > &  InputSchedule)

Definition at line 1137 of file GCNSchedStrategy.cpp.

References computeSUnitReadyCycle(), llvm::dbgs(), llvm::GCNSubtarget::getInstrInfo(), llvm::SIInstrInfo::getSchedModel(), LLVM_DEBUG, printScheduleModel(), llvm::ScheduleMetrics::ScaleFactor, and ST.

Referenced by llvm::UnclusteredHighRPStage::shouldRevertScheduling().

◆ initGCNRegion()

bool GCNSchedStage::initGCNRegion ( )
virtual

Reimplemented in llvm::UnclusteredHighRPStage, llvm::ClusteredLowOccStage, and llvm::PreRARematStage.

Definition at line 892 of file GCNSchedStrategy.cpp.

References llvm::ScheduleDAGMI::addMutation(), llvm::ScheduleDAGInstrs::begin(), llvm::createIGroupLPDAGMutation(), CurrentMBB, DAG, llvm::dbgs(), llvm::MachineBasicBlock::end(), llvm::ScheduleDAGInstrs::end(), llvm::ScheduleDAGMILive::enterRegion(), llvm::MachineBasicBlock::getName(), llvm::MachineFunction::getName(), llvm::getRegPressure(), llvm::GCNSchedStrategy::HasHighPressure, I, if(), llvm::ILPInitialSchedule, llvm::AMDGPU::Initial, isRegionWithExcessRP(), llvm::GCNSchedStrategy::KnownExcessRP, LLVM_DEBUG, MF, llvm::ScheduleDAG::MRI, llvm::ScheduleDAGMI::Mutations, llvm::ScheduleDAGInstrs::NumRegionInstrs, llvm::OccInitialSchedule, llvm::AMDGPU::PreRAReentry, PressureBefore, llvm::print(), llvm::printMBBReference(), llvm::ScheduleDAGInstrs::RegionBegin, llvm::ScheduleDAGInstrs::RegionEnd, RegionIdx, S, SavedMutations, setupNewBlock(), StageID, llvm::UnclusteredHighRPReschedule, and Unsched.

Referenced by llvm::UnclusteredHighRPStage::initGCNRegion(), llvm::ClusteredLowOccStage::initGCNRegion(), and llvm::PreRARematStage::initGCNRegion().

◆ initGCNSchedStage()

bool GCNSchedStage::initGCNSchedStage ( )
virtual

Reimplemented in llvm::UnclusteredHighRPStage, llvm::ClusteredLowOccStage, and llvm::PreRARematStage.

Definition at line 784 of file GCNSchedStrategy.cpp.

References DAG, llvm::dbgs(), llvm::ScheduleDAGMI::LIS, LLVM_DEBUG, and StageID.

Referenced by llvm::UnclusteredHighRPStage::initGCNSchedStage(), llvm::ClusteredLowOccStage::initGCNSchedStage(), and llvm::PreRARematStage::initGCNSchedStage().

◆ isRegionWithExcessRP()

bool llvm::GCNSchedStage::isRegionWithExcessRP ( ) const
inline

Definition at line 310 of file GCNSchedStrategy.h.

References DAG, and RegionIdx.

Referenced by initGCNRegion(), mayCauseSpilling(), and llvm::UnclusteredHighRPStage::shouldRevertScheduling().

◆ mayCauseSpilling()

bool GCNSchedStage::mayCauseSpilling ( unsigned  WavesAfter)

Definition at line 1293 of file GCNSchedStrategy.cpp.

References llvm::dbgs(), llvm::SIMachineFunctionInfo::getMinWavesPerEU(), isRegionWithExcessRP(), llvm::GCNRegPressure::less(), LLVM_DEBUG, MF, MFI, PressureAfter, and PressureBefore.

Referenced by llvm::OccInitialScheduleStage::shouldRevertScheduling(), llvm::UnclusteredHighRPStage::shouldRevertScheduling(), llvm::ClusteredLowOccStage::shouldRevertScheduling(), llvm::PreRARematStage::shouldRevertScheduling(), and llvm::ILPInitialScheduleStage::shouldRevertScheduling().

◆ revertScheduling()

void GCNSchedStage::revertScheduling ( )

Definition at line 1303 of file GCNSchedStrategy.cpp.

References llvm::RegisterOperands::adjustLaneLiveness(), llvm::ScheduleDAGInstrs::BB, llvm::RegisterOperands::collect(), DAG, llvm::dbgs(), llvm::RegisterOperands::detectDeadDefs(), llvm::LiveIntervals::getInstructionIndex(), llvm::GCNSchedStrategy::getNextStage(), llvm::GCNRegPressure::getOccupancy(), llvm::SlotIndex::getRegSlot(), llvm::LiveIntervals::handleMove(), llvm::GCNSchedStrategy::hasNextStage(), llvm::MachineBasicBlock::insert(), llvm::ScheduleDAGMI::LIS, LLVM_DEBUG, MI, llvm::ScheduleDAG::MRI, llvm::ScheduleDAGMI::placeDebugValues(), PressureBefore, llvm::ScheduleDAGInstrs::RegionBegin, llvm::ScheduleDAGInstrs::RegionEnd, RegionIdx, llvm::MachineBasicBlock::remove(), S, llvm::ScheduleDAGMILive::ShouldTrackLaneMasks, ST, llvm::ScheduleDAG::TRI, llvm::UnclusteredHighRPReschedule, and Unsched.

Referenced by checkScheduling().

◆ setupNewBlock()

void GCNSchedStage::setupNewBlock ( )

Definition at line 984 of file GCNSchedStrategy.cpp.

References CurrentMBB, DAG, llvm::ScheduleDAGMI::finishBlock(), llvm::ILPInitialSchedule, llvm::OccInitialSchedule, llvm::ScheduleDAGInstrs::RegionBegin, RegionIdx, StageID, and llvm::ScheduleDAGMI::startBlock().

Referenced by initGCNRegion().

◆ shouldRevertScheduling()

bool GCNSchedStage::shouldRevertScheduling ( unsigned  WavesAfter)
virtual

Reimplemented in llvm::OccInitialScheduleStage, llvm::UnclusteredHighRPStage, llvm::ClusteredLowOccStage, llvm::PreRARematStage, and llvm::ILPInitialScheduleStage.

Definition at line 1205 of file GCNSchedStrategy.cpp.

References DAG.

Referenced by checkScheduling(), llvm::OccInitialScheduleStage::shouldRevertScheduling(), llvm::UnclusteredHighRPStage::shouldRevertScheduling(), llvm::ClusteredLowOccStage::shouldRevertScheduling(), and llvm::PreRARematStage::shouldRevertScheduling().

Member Data Documentation

◆ CurrentMBB

MachineBasicBlock* llvm::GCNSchedStage::CurrentMBB = nullptr
protected

Definition at line 260 of file GCNSchedStrategy.h.

Referenced by initGCNRegion(), and setupNewBlock().

◆ DAG

GCNScheduleDAGMILive& llvm::GCNSchedStage::DAG
protected

Definition at line 247 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), computeSUnitReadyCycle(), finalizeGCNRegion(), finalizeGCNSchedStage(), llvm::UnclusteredHighRPStage::finalizeGCNSchedStage(), getScheduleMetrics(), initGCNRegion(), llvm::UnclusteredHighRPStage::initGCNRegion(), llvm::ClusteredLowOccStage::initGCNRegion(), llvm::PreRARematStage::initGCNRegion(), initGCNSchedStage(), llvm::UnclusteredHighRPStage::initGCNSchedStage(), llvm::ClusteredLowOccStage::initGCNSchedStage(), llvm::PreRARematStage::initGCNSchedStage(), isRegionWithExcessRP(), revertScheduling(), setupNewBlock(), shouldRevertScheduling(), and llvm::UnclusteredHighRPStage::shouldRevertScheduling().

◆ MF

MachineFunction& llvm::GCNSchedStage::MF
protected

Definition at line 251 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), initGCNRegion(), llvm::UnclusteredHighRPStage::initGCNSchedStage(), llvm::PreRARematStage::initGCNSchedStage(), and mayCauseSpilling().

◆ MFI

SIMachineFunctionInfo& llvm::GCNSchedStage::MFI
protected

Definition at line 253 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), llvm::UnclusteredHighRPStage::initGCNSchedStage(), llvm::PreRARematStage::initGCNSchedStage(), and mayCauseSpilling().

◆ PressureAfter

GCNRegPressure llvm::GCNSchedStage::PressureAfter
protected

Definition at line 272 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), mayCauseSpilling(), llvm::OccInitialScheduleStage::shouldRevertScheduling(), and llvm::ClusteredLowOccStage::shouldRevertScheduling().

◆ PressureBefore

GCNRegPressure llvm::GCNSchedStage::PressureBefore
protected

Definition at line 269 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), initGCNRegion(), mayCauseSpilling(), revertScheduling(), llvm::OccInitialScheduleStage::shouldRevertScheduling(), llvm::UnclusteredHighRPStage::shouldRevertScheduling(), and llvm::ClusteredLowOccStage::shouldRevertScheduling().

◆ RegionIdx

unsigned llvm::GCNSchedStage::RegionIdx = 0
protected

Definition at line 263 of file GCNSchedStrategy.h.

Referenced by advanceRegion(), checkScheduling(), finalizeGCNRegion(), initGCNRegion(), llvm::UnclusteredHighRPStage::initGCNRegion(), llvm::ClusteredLowOccStage::initGCNRegion(), llvm::PreRARematStage::initGCNRegion(), isRegionWithExcessRP(), revertScheduling(), and setupNewBlock().

◆ S

GCNSchedStrategy& llvm::GCNSchedStage::S
protected

Definition at line 249 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), finalizeGCNRegion(), llvm::UnclusteredHighRPStage::finalizeGCNSchedStage(), initGCNRegion(), llvm::UnclusteredHighRPStage::initGCNSchedStage(), llvm::PreRARematStage::initGCNSchedStage(), revertScheduling(), and llvm::UnclusteredHighRPStage::shouldRevertScheduling().

◆ SavedMutations

std::vector<std::unique_ptr<ScheduleDAGMutation> > llvm::GCNSchedStage::SavedMutations
protected

Definition at line 274 of file GCNSchedStrategy.h.

Referenced by finalizeGCNRegion(), llvm::UnclusteredHighRPStage::finalizeGCNSchedStage(), initGCNRegion(), and llvm::UnclusteredHighRPStage::initGCNSchedStage().

◆ ST

const GCNSubtarget& llvm::GCNSchedStage::ST
protected

Definition at line 255 of file GCNSchedStrategy.h.

Referenced by checkScheduling(), getScheduleMetrics(), llvm::PreRARematStage::initGCNSchedStage(), revertScheduling(), and llvm::UnclusteredHighRPStage::shouldRevertScheduling().

◆ StageID

const GCNSchedStageID llvm::GCNSchedStage::StageID
protected

Definition at line 257 of file GCNSchedStrategy.h.

Referenced by finalizeGCNRegion(), finalizeGCNSchedStage(), llvm::UnclusteredHighRPStage::finalizeGCNSchedStage(), initGCNRegion(), initGCNSchedStage(), and setupNewBlock().

◆ Unsched

std::vector<MachineInstr *> llvm::GCNSchedStage::Unsched
protected

Definition at line 266 of file GCNSchedStrategy.h.

Referenced by initGCNRegion(), and revertScheduling().

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