Register ID: describe an architectural register with its class and index. More...

#include <reg_class.hh>

Inheritance diagram for RegId:

Public Member Functions
	RegId ()

	RegId (RegClass reg_class, RegIndex reg_idx)

	RegId (RegClass reg_class, RegIndex reg_idx, ElemIndex elem_idx)

bool	operator== (const RegId &that) const

bool	operator!= (const RegId &that) const

bool	operator< (const RegId &that) const
	Order operator. More...

bool	isRenameable () const
	Return true if this register can be renamed. More...

bool	isZeroReg () const
	Check if this is the zero register. More...

bool	isIntReg () const

bool	isFloatReg () const

bool	isVecReg () const
	@Return true if it is a condition-code physical register. More...

bool	isVecElem () const
	@Return true if it is a condition-code physical register. More...

bool	isVecPredReg () const
	@Return true if it is a predicate physical register. More...

bool	isCCReg () const
	@Return true if it is a condition-code physical register. More...

bool	isMiscReg () const
	@Return true if it is a condition-code physical register. More...

bool	isRenameable ()
	Return true if this register can be renamed. More...

const RegIndex &	elemIndex () const
	Elem accessor. More...

const RegClass &	classValue () const
	Class accessor. More...

const char *	className () const
	Return a const char* with the register class name. More...

int	getNumPinnedWrites () const

void	setNumPinnedWrites (int num_writes)


const RegIndex &	index () const
	Index accessors. More...

RegIndex &	index ()

RegIndex	flatIndex () const
	Index flattening. More...

Protected Attributes
RegClass	regClass

RegIndex	regIdx

ElemIndex	elemIdx

int	numPinnedWrites

Static Protected Attributes
static const char *	regClassStrings []

static constexpr size_t	Scale = TheISA::NumVecElemPerVecReg

Friends
struct	std::hash< RegId >

std::ostream &	operator<< (std::ostream &os, const RegId &rid)

Detailed Description

Register ID: describe an architectural register with its class and index.

This structure is used instead of just the register index to disambiguate between different classes of registers. For example, a integer register with index 3 is represented by Regid(IntRegClass, 3).

Definition at line 75 of file reg_class.hh.

Constructor & Destructor Documentation

◆ RegId() [1/3]

RegId::RegId ( )

inline

Definition at line 87 of file reg_class.hh.

◆ RegId() [2/3]

RegId::RegId	(	RegClass	reg_class,
		RegIndex	reg_idx
	)

inline

Definition at line 89 of file reg_class.hh.

◆ RegId() [3/3]

RegId::RegId	(	RegClass	reg_class,
		RegIndex	reg_idx,
		ElemIndex	elem_idx
	)

inlineexplicit

Definition at line 92 of file reg_class.hh.

References elemIdx, ILLEGAL_ELEM_INDEX, panic_if, regClass, and VecElemClass.

Member Function Documentation

◆ className()

const char* RegId::className ( ) const

inline

Return a const char* with the register class name.

Definition at line 202 of file reg_class.hh.

References regClass, and regClassStrings.

Referenced by UnifiedRenameMap::lookup(), UnifiedRenameMap::rename(), DefaultRename< Impl >::renameDestRegs(), DefaultRename< Impl >::renameSrcRegs(), UnifiedRenameMap::setEntry(), and ElasticTrace::updateRegDep().

◆ classValue()

const RegClass& RegId::classValue ( ) const

inline

Class accessor.

Definition at line 200 of file reg_class.hh.

References regClass.

Referenced by Checker< O3CPUImpl >::copyResult(), X86ISA::ISA::flattenRegId(), SparcISA::ISA::flattenRegId(), ArmISA::ISA::flattenRegId(), BaseO3DynInst< Impl >::forwardOldRegs(), UnifiedRenameMap::lookup(), operator<(), operator==(), UnifiedRenameMap::rename(), DefaultRename< Impl >::renameSrcRegs(), and UnifiedRenameMap::setEntry().

◆ elemIndex()

const RegIndex& RegId::elemIndex ( ) const

inline

Elem accessor.

Definition at line 198 of file reg_class.hh.

References elemIdx.

Referenced by ArmISA::ISA::flattenRegId(), operator<(), and operator==().

◆ flatIndex()

RegIndex RegId::flatIndex ( ) const

inline

Index flattening.

Required to be able to use a vector for the register mapping.

Definition at line 179 of file reg_class.hh.

References CCRegClass, elemIdx, FloatRegClass, IntRegClass, MiscRegClass, panic, regClass, regIdx, Scale, VecElemClass, VecPredRegClass, and VecRegClass.

Referenced by SimpleRenameMap::lookup(), UnifiedRenameMap::lookup(), std::hash< RegId >::operator()(), SimpleRenameMap::rename(), and SimpleRenameMap::setEntry().

◆ getNumPinnedWrites()

int RegId::getNumPinnedWrites ( ) const

inline

Definition at line 204 of file reg_class.hh.

References numPinnedWrites.

Referenced by SimpleRenameMap::rename(), and DefaultRename< Impl >::renameDestRegs().

◆ index() [1/2]

RegIndex& RegId::index ( )

inline

Definition at line 174 of file reg_class.hh.

References regIdx.

◆ index() [2/2]

const RegIndex& RegId::index ( ) const

inline

Index accessors.

Definition at line 173 of file reg_class.hh.

References regIdx.

Referenced by Checker< O3CPUImpl >::copyResult(), TimingExprSrcReg::eval(), X86ISA::ISA::flattenRegId(), SparcISA::ISA::flattenRegId(), ArmISA::ISA::flattenRegId(), FullO3CPU< O3CPUImpl >::insertThread(), X86ISA::MemOp::MemOp(), operator<(), operator==(), BaseO3DynInst< Impl >::readMiscRegOperand(), Iris::ThreadContext::readVecPredReg(), Iris::ThreadContext::readVecReg(), DefaultRename< Impl >::renameDestRegs(), DefaultRename< Impl >::renameSrcRegs(), and CheckerCPU::setMiscRegOperand().

◆ isCCReg()

bool RegId::isCCReg ( ) const

inline

@Return true if it is a condition-code physical register.

Definition at line 158 of file reg_class.hh.

References CCRegClass, and regClass.

Referenced by PhysRegId::isCCPhysReg().

◆ isFloatReg()

bool RegId::isFloatReg ( ) const

inline

Returns: true if it is a floating-point physical register.

Definition at line 146 of file reg_class.hh.

References FloatRegClass, and regClass.

Referenced by PhysRegId::isFloatPhysReg().

◆ isIntReg()

bool RegId::isIntReg ( ) const

inline

Returns: true if it is an integer physical register.

Definition at line 143 of file reg_class.hh.

References IntRegClass, and regClass.

Referenced by PhysRegId::isIntPhysReg().

◆ isMiscReg()

bool RegId::isMiscReg ( ) const

inline

@Return true if it is a condition-code physical register.

Definition at line 161 of file reg_class.hh.

References MiscRegClass, and regClass.

Referenced by PhysRegId::isMiscPhysReg(), and ElasticTrace::updateRegDep().

◆ isRenameable() [1/2]

bool RegId::isRenameable ( )

inline

Return true if this register can be renamed.

Definition at line 166 of file reg_class.hh.

References MiscRegClass, and regClass.

◆ isRenameable() [2/2]

bool RegId::isRenameable ( ) const

inline

Return true if this register can be renamed.

Definition at line 126 of file reg_class.hh.

References MiscRegClass, and regClass.

Referenced by PhysRegId::isFixedMapping().

◆ isVecElem()

bool RegId::isVecElem ( ) const

inline

@Return true if it is a condition-code physical register.

Definition at line 152 of file reg_class.hh.

References regClass, and VecElemClass.

Referenced by PhysRegId::isVectorPhysElem().

◆ isVecPredReg()

bool RegId::isVecPredReg ( ) const

inline

@Return true if it is a predicate physical register.

Definition at line 155 of file reg_class.hh.

References regClass, and VecPredRegClass.

Referenced by PhysRegId::isVecPredPhysReg().

◆ isVecReg()

bool RegId::isVecReg ( ) const

inline

@Return true if it is a condition-code physical register.

Definition at line 149 of file reg_class.hh.

References regClass, and VecRegClass.

Referenced by PhysRegId::isVectorPhysReg().

◆ isZeroReg()

bool RegId::isZeroReg ( ) const

inline

Check if this is the zero register.

Returns true if this register is a zero register (needs to have a constant zero value throughout the execution).

Definition at line 137 of file reg_class.hh.

References IntRegClass, regClass, regIdx, and ArmISA::ZeroReg.

Referenced by ElasticTrace::updateRegDep().

◆ operator!=()

bool RegId::operator!= ( const RegId & that ) const

inline

Definition at line 109 of file reg_class.hh.

Referenced by PhysRegId::operator!=().

◆ operator<()

bool RegId::operator< ( const RegId & that ) const

inline

Order operator.

The order is required to implement maps with key type RegId

Definition at line 116 of file reg_class.hh.

References classValue(), elemIdx, elemIndex(), index(), regClass, and regIdx.

Referenced by PhysRegId::operator<().

◆ operator==()

bool RegId::operator== ( const RegId & that ) const

inline

Definition at line 104 of file reg_class.hh.

References classValue(), elemIdx, elemIndex(), index(), regClass, and regIdx.

Referenced by PhysRegId::operator==().

◆ setNumPinnedWrites()

void RegId::setNumPinnedWrites ( int num_writes )

inline

Definition at line 205 of file reg_class.hh.

References numPinnedWrites.

Referenced by DefaultRename< Impl >::renameDestRegs().

Friends And Related Function Documentation

◆ operator<<

std::ostream& operator<<	(	std::ostream &	os,
		const RegId &	rid
	)

friend

Definition at line 208 of file reg_class.hh.

◆ std::hash< RegId >

friend struct std::hash< RegId >

friend

Definition at line 84 of file reg_class.hh.

Member Data Documentation

◆ elemIdx

ElemIndex RegId::elemIdx

protected

Definition at line 80 of file reg_class.hh.

Referenced by elemIndex(), flatIndex(), operator<(), operator==(), and RegId().

◆ numPinnedWrites

int RegId::numPinnedWrites

protected

Definition at line 82 of file reg_class.hh.

Referenced by PhysRegId::decrNumPinnedWrites(), getNumPinnedWrites(), PhysRegId::getNumPinnedWrites(), PhysRegId::incrNumPinnedWrites(), setNumPinnedWrites(), and PhysRegId::setNumPinnedWrites().

◆ regClass

RegClass RegId::regClass

protected

Definition at line 78 of file reg_class.hh.

Referenced by className(), classValue(), flatIndex(), isCCReg(), isFloatReg(), isIntReg(), isMiscReg(), isRenameable(), isVecElem(), isVecPredReg(), isVecReg(), isZeroReg(), std::hash< RegId >::operator()(), operator<(), operator==(), and RegId().

◆ regClassStrings

const char * RegId::regClassStrings

staticprotected

Initial value:

= {
    "IntRegClass",
    "FloatRegClass",
    "VecRegClass",
    "VecElemClass",
    "VecPredRegClass",
    "CCRegClass",
    "MiscRegClass"
}

Definition at line 77 of file reg_class.hh.

Referenced by className().

◆ regIdx

RegIndex RegId::regIdx

protected

Definition at line 79 of file reg_class.hh.

Referenced by flatIndex(), index(), isZeroReg(), operator<(), and operator==().

◆ Scale

constexpr size_t RegId::Scale = TheISA::NumVecElemPerVecReg

staticconstexprprotected

Definition at line 81 of file reg_class.hh.

Referenced by flatIndex().

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

cpu/reg_class.hh
cpu/reg_class.cc

Public Member Functions

Protected Attributes

Static Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ RegId() [1/3]

◆ RegId() [2/3]

◆ RegId() [3/3]

Member Function Documentation

◆ className()

◆ classValue()

◆ elemIndex()

◆ flatIndex()

◆ getNumPinnedWrites()

◆ index() [1/2]

◆ index() [2/2]

◆ isCCReg()

◆ isFloatReg()

◆ isIntReg()

◆ isMiscReg()

◆ isRenameable() [1/2]

◆ isRenameable() [2/2]

◆ isVecElem()

◆ isVecPredReg()

◆ isVecReg()

◆ isZeroReg()

◆ operator!=()

◆ operator<()

◆ operator==()

◆ setNumPinnedWrites()

Friends And Related Function Documentation

◆ operator<<

◆ std::hash< RegId >

Member Data Documentation

◆ elemIdx

◆ numPinnedWrites

◆ regClass

◆ regClassStrings

◆ regIdx

◆ Scale