llvm::MCRegister Class Reference

Wrapper class representing physical registers. Should be passed by value. More...

#include "llvm/MC/MCRegister.h"

Public Member Functions
constexpr	MCRegister (unsigned Val=0)
constexpr	operator unsigned () const
unsigned	id () const
bool	isValid () const
bool	operator== (const MCRegister &Other) const
	Comparisons between register objects.
bool	operator!= (const MCRegister &Other) const
bool	operator== (unsigned Other) const
	Comparisons against register constants.
bool	operator!= (unsigned Other) const
bool	operator== (int Other) const
bool	operator!= (int Other) const
bool	operator== (MCPhysReg Other) const
bool	operator!= (MCPhysReg Other) const

Static Public Member Functions
static bool	isStackSlot (unsigned Reg)
	This is the portion of the positive number space that is not a physical register.
static bool	isPhysicalRegister (unsigned Reg)
	Return true if the specified register number is in the physical register namespace.
static MCRegister	from (unsigned Val)
	Check the provided unsigned value is a valid MCRegister.

Static Public Attributes
static constexpr unsigned	NoRegister = 0u
static constexpr unsigned	FirstPhysicalReg = 1u
static constexpr unsigned	FirstStackSlot = 1u << 30
static constexpr unsigned	VirtualRegFlag = 1u << 31

Friends
hash_code	hash_value (const MCRegister &)

Detailed Description

Wrapper class representing physical registers. Should be passed by value.

Definition at line 24 of file MCRegister.h.

Constructor & Destructor Documentation

MCRegister()

constexpr llvm::MCRegister::MCRegister ( unsigned  Val = 0 )

inlineconstexpr

Definition at line 29 of file MCRegister.h.

Member Function Documentation

from()

static MCRegister llvm::MCRegister::from ( unsigned  Val )

inlinestatic

Check the provided unsigned value is a valid MCRegister.

Definition at line 67 of file MCRegister.h.

References assert(), isPhysicalRegister(), and NoRegister.

Referenced by llvm::SystemZInstrInfo::foldMemoryOperandImpl(), llvm::VirtRegMap::getPhys(), llvm::rdf::PhysicalRegisterInfo::PhysicalRegisterInfo(), rematerializeCheapDef(), and llvm::SIRegisterInfo::SIRegisterInfo().

id()

unsigned llvm::MCRegister::id ( ) const

inline

Definition at line 72 of file MCRegister.h.

Referenced by llvm::DenseMapInfo< MCRegister >::getHashValue(), llvm::RegisterClassInfo::getLastCalleeSavedAlias(), and llvm::MachineRegisterInfo::isReserved().

isPhysicalRegister()

static bool llvm::MCRegister::isPhysicalRegister ( unsigned  Reg )

inlinestatic

Return true if the specified register number is in the physical register namespace.

Definition at line 58 of file MCRegister.h.

References FirstPhysicalReg, and FirstStackSlot.

Referenced by llvm::Register::asMCReg(), from(), llvm::Register::isPhysicalRegister(), and llvm::MCRegUnitIterator::MCRegUnitIterator().

isStackSlot()

static bool llvm::MCRegister::isStackSlot ( unsigned  Reg )

inlinestatic

This is the portion of the positive number space that is not a physical register.

StackSlot values do not exist in the MC layer, see Register::isStackSlot() for the more information on them.

Definition at line 52 of file MCRegister.h.

References FirstStackSlot, and VirtualRegFlag.

Referenced by llvm::Register::isStack(), and llvm::Register::isStackSlot().

isValid()

bool llvm::MCRegister::isValid ( ) const

inline

Definition at line 76 of file MCRegister.h.

References NoRegister.

Referenced by llvm::InterferenceCache::Cursor::setPhysReg().

operator unsigned()

constexpr llvm::MCRegister::operator unsigned ( ) const

inlineconstexpr

Definition at line 62 of file MCRegister.h.

operator!=() [1/4]

bool llvm::MCRegister::operator!= ( const MCRegister &  Other ) const

inline

Definition at line 80 of file MCRegister.h.

References llvm::Other.

operator!=() [2/4]

bool llvm::MCRegister::operator!= ( int  Other ) const

inline

Definition at line 89 of file MCRegister.h.

References llvm::Other.

operator!=() [3/4]

bool llvm::MCRegister::operator!= ( MCPhysReg  Other ) const

inline

Definition at line 92 of file MCRegister.h.

References llvm::Other.

operator!=() [4/4]

bool llvm::MCRegister::operator!= ( unsigned  Other ) const

inline

Definition at line 87 of file MCRegister.h.

References llvm::Other.

operator==() [1/4]

bool llvm::MCRegister::operator== ( const MCRegister &  Other ) const

inline

Comparisons between register objects.

Definition at line 79 of file MCRegister.h.

References llvm::Other.

operator==() [2/4]

bool llvm::MCRegister::operator== ( int  Other ) const

inline

Definition at line 88 of file MCRegister.h.

References llvm::Other.

operator==() [3/4]

bool llvm::MCRegister::operator== ( MCPhysReg  Other ) const

inline

Definition at line 91 of file MCRegister.h.

References llvm::Other.

operator==() [4/4]

bool llvm::MCRegister::operator== ( unsigned  Other ) const

inline

Comparisons against register constants.

E.g.

• R == AArch64::WZR
• R == 0
• R == VirtRegMap::NO_PHYS_REG

Definition at line 86 of file MCRegister.h.

References llvm::Other.

Friends And Related Function Documentation

hash_value

hash_code hash_value ( const MCRegister &  Reg )

friend

Definition at line 111 of file MCRegister.h.

Member Data Documentation

FirstPhysicalReg

constexpr unsigned llvm::MCRegister::FirstPhysicalReg = 1u

staticconstexpr

Definition at line 44 of file MCRegister.h.

Referenced by isPhysicalRegister().

FirstStackSlot

constexpr unsigned llvm::MCRegister::FirstStackSlot = 1u << 30

staticconstexpr

Definition at line 45 of file MCRegister.h.

Referenced by llvm::Register::index2StackSlot(), isPhysicalRegister(), isStackSlot(), and llvm::Register::stackSlot2Index().

NoRegister

constexpr unsigned llvm::MCRegister::NoRegister = 0u

staticconstexpr

Definition at line 43 of file MCRegister.h.

Referenced by llvm::Register::asMCReg(), from(), llvm::RegisterClassInfo::getLastCalleeSavedAlias(), llvm::LiveRegMatrix::getOneVReg(), llvm::X86RegisterInfo::getRegAllocationHints(), llvm::TargetLoweringObjectFile::getStaticBase(), isCandidate(), llvm::Register::isValid(), and isValid().

VirtualRegFlag

constexpr unsigned llvm::MCRegister::VirtualRegFlag = 1u << 31

staticconstexpr

Definition at line 46 of file MCRegister.h.

Referenced by llvm::Register::index2VirtReg(), isStackSlot(), and llvm::Register::isVirtualRegister().

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

• include/llvm/MC/MCRegister.h