LLVM: llvm::mca::RegisterFile Class Reference (original) (raw)

Manages hardware register files, and tracks register definitions for register renaming purposes. More...

#include "[llvm/MCA/HardwareUnits/RegisterFile.h](RegisterFile%5F8h%5Fsource.html)"

Public Member Functions
RegisterFile (const MCSchedModel &SM, const MCRegisterInfo &mri, unsigned NumRegs=0)
void collectWrites (const MCSubtargetInfo &STI, const ReadState &RS, SmallVectorImpl< WriteRef > &Writes, SmallVectorImpl< WriteRef > &CommittedWrites) const
RAWHazard checkRAWHazards (const MCSubtargetInfo &STI, const ReadState &RS) const
void addRegisterWrite (WriteRef Write, MutableArrayRef< unsigned > UsedPhysRegs)
void addRegisterRead (ReadState &RS, const MCSubtargetInfo &STI) const
void removeRegisterWrite (const WriteState &WS, MutableArrayRef< unsigned > FreedPhysRegs)
bool canEliminateMove (const WriteState &WS, const ReadState &RS, unsigned PRFIndex) const
bool tryEliminateMoveOrSwap (MutableArrayRef< WriteState > Writes, MutableArrayRef< ReadState > Reads)
unsigned isAvailable (ArrayRef< MCPhysReg > Regs) const
unsigned getNumRegisterFiles () const
unsigned getElapsedCyclesFromWriteBack (const WriteRef &WR) const
void onInstructionExecuted (Instruction *IS)
void cycleStart ()
void cycleEnd ()
void dump () const
Public Member Functions inherited from llvm::mca::HardwareUnit
HardwareUnit ()=default
virtual ~HardwareUnit ()

Manages hardware register files, and tracks register definitions for register renaming purposes.

Definition at line 83 of file RegisterFile.h.

◆ addRegisterRead()

Definition at line 626 of file RegisterFile.cpp.

References llvm::mca::WriteState::addUser(), assert(), collectWrites(), getElapsedCyclesFromWriteBack(), llvm::MCSubtargetInfo::getReadAdvanceCycles(), llvm::MCSchedModel::getSchedClassDesc(), llvm::MCSubtargetInfo::getSchedModel(), llvm::mca::ReadDescriptor::SchedClassID, llvm::SmallVectorTemplateCommon< T, typename >::size(), and llvm::mca::ReadDescriptor::UseIndex.

Referenced by llvm::mca::addRegisterReadWrite().

◆ addRegisterWrite()

Definition at line 233 of file RegisterFile.cpp.

References llvm::mca::WriteState::addUser(), assert(), llvm::mca::WriteState::clearsSuperRegisters(), llvm::dbgs(), llvm::mca::WriteState::getLatency(), llvm::mca::WriteState::getRegisterID(), llvm::mca::WriteRef::getSourceIndex(), llvm::mca::WriteRef::getWriteState(), I, llvm::mca::WriteState::isEliminated(), llvm::mca::isNonArtificial(), llvm::mca::WriteState::isWriteZero(), LLVM_DEBUG, llvm::make_filter_range(), llvm::mca::WriteState::setPRF(), and llvm::Write.

Referenced by llvm::mca::addRegisterReadWrite().

◆ canEliminateMove()

◆ checkRAWHazards()

Definition at line 576 of file RegisterFile.cpp.

References assert(), llvm::SmallVectorImpl< T >::clear(), collectWrites(), llvm::mca::RegisterFile::RAWHazard::CyclesLeft, llvm::mca::WriteState::getCyclesLeft(), getElapsedCyclesFromWriteBack(), llvm::MCSubtargetInfo::getReadAdvanceCycles(), llvm::MCSchedModel::getSchedClassDesc(), llvm::MCSubtargetInfo::getSchedModel(), llvm::mca::WriteState::getWriteResourceID(), llvm::mca::RegisterFile::RAWHazard::isValid(), llvm::mca::RegisterFile::RAWHazard::RegisterID, llvm::mca::ReadDescriptor::SchedClassID, llvm::mca::UNKNOWN_CYCLES, and llvm::mca::ReadDescriptor::UseIndex.

Referenced by llvm::mca::checkRegisterHazard().

◆ collectWrites()

Definition at line 510 of file RegisterFile.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::dbgs(), getElapsedCyclesFromWriteBack(), llvm::MCSubtargetInfo::getReadAdvanceCycles(), llvm::mca::WriteState::getRegisterID(), llvm::MCSchedModel::getSchedClassDesc(), llvm::MCSubtargetInfo::getSchedModel(), llvm::mca::WriteRef::getSourceIndex(), llvm::mca::WriteRef::getWriteResourceID(), llvm::mca::WriteRef::getWriteState(), llvm::mca::WriteRef::hasKnownWriteBackCycle(), I, LLVM_DEBUG, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorImpl< T >::resize(), llvm::mca::ReadDescriptor::SchedClassID, llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::sort(), llvm::unique(), and llvm::mca::ReadDescriptor::UseIndex.

Referenced by addRegisterRead(), and checkRAWHazards().

◆ cycleEnd()

void llvm::mca::RegisterFile::cycleEnd ( ) inline

◆ cycleStart()

void llvm::mca::RegisterFile::cycleStart ( )

◆ dump()

void llvm::mca::RegisterFile::dump ( ) const

◆ getElapsedCyclesFromWriteBack()

◆ getNumRegisterFiles()

unsigned llvm::mca::RegisterFile::getNumRegisterFiles ( ) const inline

◆ isAvailable()

◆ onInstructionExecuted()

void llvm::mca::RegisterFile::onInstructionExecuted ( Instruction * IS )

◆ removeRegisterWrite()

◆ tryEliminateMoveOrSwap()

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