LLVM 22.0.0git
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Attempts to reduce function spilling or, if there is no spilling, to increase function occupancy by one with respect to ArchVGPR usage by sinking rematerializable instructions to their use. More...
#include "Target/AMDGPU/GCNSchedStrategy.h"
Public Member Functions | |
bool | initGCNSchedStage () override |
bool | initGCNRegion () override |
bool | shouldRevertScheduling (unsigned WavesAfter) override |
PreRARematStage (GCNSchedStageID StageID, GCNScheduleDAGMILive &DAG) | |
Public Member Functions inherited from llvm::GCNSchedStage | |
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) |
bool | isRegionWithExcessRP () const |
unsigned | getRegionIdx () |
bool | mayCauseSpilling (unsigned WavesAfter) |
void | revertScheduling () |
void | advanceRegion () |
virtual | ~GCNSchedStage ()=default |
Additional Inherited Members | |
Protected Member Functions inherited from llvm::GCNSchedStage | |
GCNSchedStage (GCNSchedStageID StageID, GCNScheduleDAGMILive &DAG) | |
Protected Attributes inherited from llvm::GCNSchedStage | |
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 |
Attempts to reduce function spilling or, if there is no spilling, to increase function occupancy by one with respect to ArchVGPR usage by sinking rematerializable instructions to their use.
When the stage estimates reducing spilling or increasing occupancy is possible, as few instructions as possible are rematerialized to reduce potential negative effects on function latency.
Definition at line 440 of file GCNSchedStrategy.h.
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inline |
Definition at line 506 of file GCNSchedStrategy.h.
References llvm::GCNSchedStage::DAG, llvm::GCNSchedStage::GCNSchedStage(), llvm::size(), and llvm::GCNSchedStage::StageID.
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overridevirtual |
Reimplemented from llvm::GCNSchedStage.
Definition at line 1243 of file GCNSchedStrategy.cpp.
References llvm::GCNSchedStage::initGCNRegion(), and llvm::GCNSchedStage::RegionIdx.
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overridevirtual |
Reimplemented from llvm::GCNSchedStage.
Definition at line 1093 of file GCNSchedStrategy.cpp.
References assert(), llvm::GCNSchedStage::DAG, llvm::dbgs(), GCNTrackers, llvm::RegionBase< Tr >::getParent(), I, llvm::GCNSchedStage::initGCNSchedStage(), llvm::GCNSchedStage::MF, llvm::GCNSchedStage::MFI, MI, REMAT_DEBUG, and llvm::GCNSchedStage::S.
Reimplemented from llvm::GCNSchedStage.
Definition at line 1548 of file GCNSchedStrategy.cpp.
References llvm::GCNSchedStage::mayCauseSpilling(), and llvm::GCNSchedStage::shouldRevertScheduling().