llvm::LiveRegSet Class Reference

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

#include "llvm/CodeGen/RegisterPressure.h"

Public Member Functions
LLVM_ABI void	clear ()
LLVM_ABI void	init (const MachineRegisterInfo &MRI)
LaneBitmask	contains (Register Reg) const
LaneBitmask	insert (VRegMaskOrUnit Pair)
	Mark the Pair.LaneMask lanes of Pair.Reg as live.
LaneBitmask	erase (VRegMaskOrUnit Pair)
	Clears the Pair.LaneMask lanes of Pair.Reg (mark them as dead).
size_t	size () const
void	appendTo (SmallVectorImpl< VRegMaskOrUnit > &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 264 of file RegisterPressure.h.

Member Function Documentation

appendTo()

void llvm::LiveRegSet::appendTo ( SmallVectorImpl< VRegMaskOrUnit > & To ) const

inline

Definition at line 336 of file RegisterPressure.h.

References llvm::SmallVectorImpl< T >::emplace_back(), P, and Reg.

clear()

void LiveRegSet::clear

(

)

Definition at line 229 of file RegisterPressure.cpp.

contains()

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

inline

Definition at line 299 of file RegisterPressure.h.

References llvm::LaneBitmask::getNone(), I, and Reg.

erase()

LaneBitmask llvm::LiveRegSet::erase ( VRegMaskOrUnit 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 322 of file RegisterPressure.h.

References llvm::LaneBitmask::getNone(), I, and llvm::VRegMaskOrUnit::RegUnit.

init()

void LiveRegSet::init

(

const MachineRegisterInfo &

MRI

)

Definition at line 221 of file RegisterPressure.cpp.

References MRI, and TRI.

insert()

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

inline

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

Returns the previously live lanes of Pair.Reg.

Definition at line 309 of file RegisterPressure.h.

References llvm::LaneBitmask::getNone(), llvm::VRegMaskOrUnit::LaneMask, and llvm::VRegMaskOrUnit::RegUnit.

size()

size_t llvm::LiveRegSet::size ( ) const

inline

Definition at line 332 of file RegisterPressure.h.

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

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