Attempts to reduce function spilling or, if there is no spilling, to increase function occupancy by one with respect to ArchVGPR usage by sinking trivially 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 | |
| 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 |
| 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 |
Detailed Description
Attempts to reduce function spilling or, if there is no spilling, to increase function occupancy by one with respect to ArchVGPR usage by sinking trivially 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.
Constructor & Destructor Documentation
◆ PreRARematStage()
|
inline |
Definition at line 513 of file GCNSchedStrategy.h.
References llvm::size().
Member Function Documentation
◆ initGCNRegion()
|
overridevirtual |
Reimplemented from llvm::GCNSchedStage.
Definition at line 1242 of file GCNSchedStrategy.cpp.
References llvm::GCNSchedStage::initGCNRegion(), and llvm::GCNSchedStage::RegionIdx.
◆ initGCNSchedStage()
|
overridevirtual |
Reimplemented from llvm::GCNSchedStage.
Definition at line 1092 of file GCNSchedStrategy.cpp.
References assert(), llvm::RegionPressureMap::buildLiveRegMap(), llvm::GCNSchedStage::DAG, llvm::dbgs(), GCNTrackers, llvm::MachineFunction::getInfo(), llvm::RegionBase< Tr >::getParent(), llvm::GCNSchedStrategy::hasNextStage(), I, llvm::SIMachineFunctionInfo::increaseOccupancy(), llvm::GCNSchedStage::initGCNSchedStage(), llvm::GCNSchedStage::MF, llvm::GCNSchedStage::MFI, MI, REMAT_DEBUG, llvm::GCNSchedStage::S, and llvm::SmallVectorBase< Size_T >::size().
◆ shouldRevertScheduling()
Reimplemented from llvm::GCNSchedStage.
Definition at line 1547 of file GCNSchedStrategy.cpp.
References llvm::GCNSchedStage::mayCauseSpilling(), and llvm::GCNSchedStage::shouldRevertScheduling().
The documentation for this class was generated from the following files:
- lib/Target/AMDGPU/GCNSchedStrategy.h
- lib/Target/AMDGPU/GCNSchedStrategy.cpp
