|
LLVM
4.0.0
|
#include "llvm/CodeGen/RegisterPressure.h"#include "llvm/CodeGen/LiveInterval.h"#include "llvm/CodeGen/LiveIntervalAnalysis.h"#include "llvm/CodeGen/MachineRegisterInfo.h"#include "llvm/CodeGen/RegisterClassInfo.h"#include "llvm/Support/Debug.h"#include "llvm/Support/raw_ostream.h"Go to the source code of this file.
Functions | |
| static void | increaseSetPressure (std::vector< unsigned > &CurrSetPressure, const MachineRegisterInfo &MRI, unsigned Reg, LaneBitmask PrevMask, LaneBitmask NewMask) |
| Increase pressure for each pressure set provided by TargetRegisterInfo. More... | |
| static void | decreaseSetPressure (std::vector< unsigned > &CurrSetPressure, const MachineRegisterInfo &MRI, unsigned Reg, LaneBitmask PrevMask, LaneBitmask NewMask) |
| Decrease pressure for each pressure set provided by TargetRegisterInfo. More... | |
| static const LiveRange * | getLiveRange (const LiveIntervals &LIS, unsigned Reg) |
| static LaneBitmask | getRegLanes (ArrayRef< RegisterMaskPair > RegUnits, unsigned RegUnit) |
| static void | addRegLanes (SmallVectorImpl< RegisterMaskPair > &RegUnits, RegisterMaskPair Pair) |
| static void | setRegZero (SmallVectorImpl< RegisterMaskPair > &RegUnits, unsigned RegUnit) |
| static void | removeRegLanes (SmallVectorImpl< RegisterMaskPair > &RegUnits, RegisterMaskPair Pair) |
| static LaneBitmask | getLanesWithProperty (const LiveIntervals &LIS, const MachineRegisterInfo &MRI, bool TrackLaneMasks, unsigned RegUnit, SlotIndex Pos, LaneBitmask SafeDefault, bool(*Property)(const LiveRange &LR, SlotIndex Pos)) |
| static LaneBitmask | getLiveLanesAt (const LiveIntervals &LIS, const MachineRegisterInfo &MRI, bool TrackLaneMasks, unsigned RegUnit, SlotIndex Pos) |
| static void | computeExcessPressureDelta (ArrayRef< unsigned > OldPressureVec, ArrayRef< unsigned > NewPressureVec, RegPressureDelta &Delta, const RegisterClassInfo *RCI, ArrayRef< unsigned > LiveThruPressureVec) |
| Find the max change in excess pressure across all sets. More... | |
| static void | computeMaxPressureDelta (ArrayRef< unsigned > OldMaxPressureVec, ArrayRef< unsigned > NewMaxPressureVec, ArrayRef< PressureChange > CriticalPSets, ArrayRef< unsigned > MaxPressureLimit, RegPressureDelta &Delta) |
| Find the max change in max pressure that either surpasses a critical PSet limit or exceeds the current MaxPressureLimit. More... | |
| static LaneBitmask | findUseBetween (unsigned Reg, LaneBitmask LastUseMask, SlotIndex PriorUseIdx, SlotIndex NextUseIdx, const MachineRegisterInfo &MRI, const LiveIntervals *LIS) |
| Helper to find a vreg use between two indices [PriorUseIdx, NextUseIdx). More... | |
|
static |
Definition at line 339 of file RegisterPressure.cpp.
References llvm::LaneBitmask::any(), assert(), llvm::SmallVectorTemplateCommon< T >::end(), llvm::find_if(), I, llvm::RegisterMaskPair::LaneMask, Other, llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), and llvm::RegisterMaskPair::RegUnit.
Referenced by llvm::RegPressureTracker::recede().
|
static |
Find the max change in excess pressure across all sets.
Definition at line 910 of file RegisterPressure.cpp.
References llvm::ArrayRef< T >::empty(), llvm::RegPressureDelta::Excess, llvm::RegisterClassInfo::getRegPressureSetLimit(), i, llvm::PressureChange::setUnitInc(), and llvm::ArrayRef< T >::size().
Referenced by llvm::RegPressureTracker::getMaxDownwardPressureDelta(), and llvm::RegPressureTracker::getMaxUpwardPressureDelta().
|
static |
Find the max change in max pressure that either surpasses a critical PSet limit or exceeds the current MaxPressureLimit.
FIXME: comparing each element of the old and new MaxPressure vectors here is silly. It's done now to demonstrate the concept but will go away with a RegPressureTracker API change to work with pressure differences.
Definition at line 949 of file RegisterPressure.cpp.
References llvm::RegPressureDelta::CriticalMax, llvm::RegPressureDelta::CurrentMax, i, llvm::PressureChange::isValid(), llvm::PressureChange::setUnitInc(), and llvm::ArrayRef< T >::size().
Referenced by llvm::RegPressureTracker::getMaxDownwardPressureDelta(), and llvm::RegPressureTracker::getMaxUpwardPressureDelta().
|
static |
Decrease pressure for each pressure set provided by TargetRegisterInfo.
Definition at line 40 of file RegisterPressure.cpp.
References llvm::LaneBitmask::any(), assert(), llvm::MachineRegisterInfo::getPressureSets(), llvm::PSetIterator::getWeight(), llvm::PSetIterator::isValid(), and llvm::LaneBitmask::none().
Referenced by llvm::RegPressureTracker::decreaseRegPressure().
|
static |
Helper to find a vreg use between two indices [PriorUseIdx, NextUseIdx).
The query starts with a lane bitmask which gets lanes/bits removed for every use we find.
Definition at line 1174 of file RegisterPressure.cpp.
References llvm::LiveIntervals::getInstructionIndex(), llvm::LaneBitmask::getNone(), llvm::MachineOperand::getParent(), llvm::SlotIndex::getRegSlot(), llvm::MachineOperand::getSubReg(), llvm::TargetRegisterInfo::getSubRegIndexLaneMask(), llvm::MachineRegisterInfo::getTargetRegisterInfo(), llvm::MachineOperand::isUndef(), llvm::LaneBitmask::none(), and llvm::MachineRegisterInfo::use_nodbg_operands().
Referenced by llvm::RegPressureTracker::bumpDownwardPressure().
|
static |
Definition at line 379 of file RegisterPressure.cpp.
References llvm::LaneBitmask::getAll(), llvm::LiveIntervals::getCachedRegUnit(), llvm::LiveIntervals::getInterval(), llvm::MachineRegisterInfo::getMaxLaneMaskForVReg(), llvm::LaneBitmask::getNone(), llvm::LiveInterval::hasSubRanges(), llvm::TargetRegisterInfo::isVirtualRegister(), and llvm::LiveInterval::subranges().
Referenced by llvm::RegPressureTracker::getLastUsedLanes(), getLiveLanesAt(), llvm::RegPressureTracker::getLiveLanesAt(), and llvm::RegPressureTracker::getLiveThroughAt().
|
static |
Definition at line 407 of file RegisterPressure.cpp.
References llvm::LaneBitmask::getAll(), getLanesWithProperty(), and llvm::LiveRange::liveAt().
Referenced by llvm::RegisterOperands::adjustLaneLiveness().
|
static |
Definition at line 194 of file RegisterPressure.cpp.
References llvm::LiveIntervals::getCachedRegUnit(), llvm::LiveIntervals::getInterval(), and llvm::TargetRegisterInfo::isVirtualRegister().
Referenced by llvm::RegisterOperands::detectDeadDefs().
|
static |
Definition at line 329 of file RegisterPressure.cpp.
References llvm::ArrayRef< T >::end(), llvm::find_if(), llvm::LaneBitmask::getNone(), I, Other, and llvm::RegisterMaskPair::RegUnit.
Referenced by llvm::RegPressureTracker::bumpUpwardPressure().
|
static |
Increase pressure for each pressure set provided by TargetRegisterInfo.
Definition at line 26 of file RegisterPressure.cpp.
References llvm::LaneBitmask::any(), assert(), llvm::MachineRegisterInfo::getPressureSets(), llvm::PSetIterator::getWeight(), llvm::PSetIterator::isValid(), and llvm::LaneBitmask::none().
Referenced by llvm::RegPressureTracker::discoverLiveInOrOut(), llvm::RegPressureTracker::initLiveThru(), and llvm::RegPressureTracker::recede().
|
static |
Definition at line 365 of file RegisterPressure.cpp.
References llvm::LaneBitmask::any(), assert(), llvm::SmallVectorTemplateCommon< T >::end(), llvm::SmallVectorImpl< T >::erase(), llvm::find_if(), I, llvm::RegisterMaskPair::LaneMask, Other, and llvm::RegisterMaskPair::RegUnit.
Referenced by llvm::RegPressureTracker::recede().
|
static |
Definition at line 353 of file RegisterPressure.cpp.
References llvm::SmallVectorTemplateCommon< T >::end(), llvm::find_if(), llvm::LaneBitmask::getNone(), I, Other, llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), and llvm::RegisterMaskPair::RegUnit.
Referenced by llvm::RegPressureTracker::recede().
1.8.6