llvm::VirtRegAuxInfo Class Reference

Calculate auxiliary information for a virtual register such as its spill weight and allocation hint. More...

#include <CalcSpillWeights.h>

Public Types
typedef float(*	NormalizingFn )(float, unsigned)

Public Member Functions
	VirtRegAuxInfo (MachineFunction &mf, LiveIntervals &lis, const MachineLoopInfo &loops, const MachineBlockFrequencyInfo &mbfi, NormalizingFn norm=normalizeSpillWeight)
void	calculateSpillWeightAndHint (LiveInterval &li)
	(re)compute li's spill weight and allocation hint. More...

Detailed Description

Calculate auxiliary information for a virtual register such as its spill weight and allocation hint.

Definition at line 45 of file CalcSpillWeights.h.

Member Typedef Documentation

typedef float(* llvm::VirtRegAuxInfo::NormalizingFn)(float, unsigned)

Definition at line 47 of file CalcSpillWeights.h.

Constructor & Destructor Documentation

llvm::VirtRegAuxInfo::VirtRegAuxInfo ( MachineFunction &  mf, LiveIntervals &  lis, const MachineLoopInfo &  loops, const MachineBlockFrequencyInfo &  mbfi, NormalizingFn  norm = normalizeSpillWeight  )

inline

Definition at line 58 of file CalcSpillWeights.h.

Member Function Documentation

void VirtRegAuxInfo::calculateSpillWeightAndHint

(

LiveInterval &

li

)

(re)compute li's spill weight and allocation hint.

Definition at line 96 of file CalcSpillWeights.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::clear(), copyHint(), llvm::MachineBlockFrequencyInfo::getBlockFreq(), llvm::TargetMachine::getInstrInfo(), llvm::MachineLoopInfo::getLoopFor(), llvm::MachineInstr::getParent(), llvm::MachineRegisterInfo::getRegAllocationHint(), llvm::MachineFunction::getRegInfo(), llvm::TargetMachine::getRegisterInfo(), llvm::LiveInterval::getSize(), llvm::LiveIntervals::getSlotIndexes(), llvm::LiveIntervals::getSpillWeight(), llvm::MachineFunction::getTarget(), I, llvm::SmallPtrSet< PtrType, SmallSize >::insert(), llvm::MachineRegisterInfo::isAllocatable(), llvm::MachineInstr::isCopy(), llvm::MachineInstr::isDebugValue(), llvm::MachineInstr::isIdentityCopy(), llvm::MachineInstr::isImplicitDef(), llvm::LiveIntervals::isLiveOutOfMBB(), llvm::LoopBase< N, M >::isLoopExiting(), llvm::TargetRegisterInfo::isPhysicalRegister(), isRematerializable(), llvm::LiveInterval::isSpillable(), llvm::LiveRange::isZeroLength(), llvm::LiveInterval::markNotSpillable(), llvm::MachineInstr::readsWritesVirtualRegister(), llvm::LiveInterval::reg, llvm::MachineRegisterInfo::reg_begin(), llvm::MachineRegisterInfo::setRegAllocationHint(), llvm::tie(), and llvm::LiveInterval::weight.

Referenced by llvm::LiveRangeEdit::calculateRegClassAndHint(), and llvm::calculateSpillWeightsAndHints().

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

• CalcSpillWeights.h
• CalcSpillWeights.cpp