llvm::LiveRegSet Class Reference

A set of live virtual registers and physical register units. More...

#include "llvm/CodeGen/RegisterPressure.h"

Public Member Functions
void	clear ()
void	init (const MachineRegisterInfo &MRI)
LaneBitmask	contains (Register Reg) const
LaneBitmask	insert (RegisterMaskPair Pair)
	Mark the Pair.LaneMask lanes of Pair.Reg as live.
LaneBitmask	erase (RegisterMaskPair Pair)
	Clears the Pair.LaneMask lanes of Pair.Reg (mark them as dead).
size_t	size () const
template<typename ContainerT >
void	appendTo (ContainerT &To) const

Detailed Description

A set of live virtual registers and physical register units.

This is a wrapper around a SparseSet which deals with mapping register unit and virtual register indexes to an index usable by the sparse set.

Definition at line 261 of file RegisterPressure.h.

Member Function Documentation

appendTo()

template<typename ContainerT >

void llvm::LiveRegSet::appendTo ( ContainerT &  To ) const

inline

Definition at line 334 of file RegisterPressure.h.

References P, and Reg.

Referenced by llvm::RegPressureTracker::closeBottom(), and llvm::RegPressureTracker::closeTop().

clear()

void LiveRegSet::clear

(

)

Definition at line 233 of file RegisterPressure.cpp.

References llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::clear().

Referenced by llvm::RegPressureTracker::reset().

contains()

LaneBitmask llvm::LiveRegSet::contains ( Register  Reg ) const

inline

Definition at line 296 of file RegisterPressure.h.

References llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::end(), llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::find(), llvm::LaneBitmask::getNone(), I, and Reg.

Referenced by llvm::RegPressureTracker::advance(), llvm::RegPressureTracker::bumpDeadDefs(), llvm::RegPressureTracker::bumpDownwardPressure(), llvm::RegPressureTracker::bumpUpwardPressure(), and llvm::RegPressureTracker::recede().

erase()

LaneBitmask llvm::LiveRegSet::erase ( RegisterMaskPair  Pair )

inline

Clears the Pair.LaneMask lanes of Pair.Reg (mark them as dead).

Returns the previously live lanes of Pair.Reg.

Definition at line 319 of file RegisterPressure.h.

References llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::end(), llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::find(), llvm::LaneBitmask::getNone(), I, and llvm::RegisterMaskPair::RegUnit.

Referenced by llvm::RegPressureTracker::advance(), and llvm::RegPressureTracker::recede().

init()

void LiveRegSet::init

(

const MachineRegisterInfo &

MRI

)

Definition at line 225 of file RegisterPressure.cpp.

References MRI, llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::setUniverse(), and TRI.

Referenced by llvm::RegPressureTracker::init().

insert()

LaneBitmask llvm::LiveRegSet::insert ( RegisterMaskPair  Pair )

inline

Mark the Pair.LaneMask lanes of Pair.Reg as live.

Returns the previously live lanes of Pair.Reg.

Definition at line 306 of file RegisterPressure.h.

References llvm::LaneBitmask::getNone(), llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::insert(), llvm::RegisterMaskPair::LaneMask, and llvm::RegisterMaskPair::RegUnit.

Referenced by llvm::RegPressureTracker::addLiveRegs(), llvm::RegPressureTracker::advance(), and llvm::RegPressureTracker::recede().

size()

size_t llvm::LiveRegSet::size ( ) const

inline

Definition at line 329 of file RegisterPressure.h.

References llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::size().

Referenced by llvm::RegPressureTracker::closeBottom(), llvm::RegPressureTracker::closeRegion(), and llvm::RegPressureTracker::closeTop().

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

• include/llvm/CodeGen/RegisterPressure.h
• lib/CodeGen/RegisterPressure.cpp