gem5::RegId Class Reference

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

#include <reg_class.hh>

Inheritance diagram for gem5::RegId:

Public Member Functions
constexpr	RegId ()
constexpr	RegId (const RegClass &reg_class, RegIndex reg_idx)
constexpr	operator RegIndex () const
constexpr bool	operator== (const RegId &that) const
constexpr bool	operator!= (const RegId &that) const
constexpr bool	operator< (const RegId &that) const
	Order operator.
constexpr bool	isRenameable () const
	Return true if this register can be renamed.
constexpr bool	is (RegClassType reg_class) const

Protected Attributes
const RegClass *	_regClass = nullptr
RegIndex	regIdx
int	numPinnedWrites

Friends
struct	std::hash< RegId >
class	RegClassIterator
std::ostream &	operator<< (std::ostream &os, const RegId &rid)
constexpr RegIndex	index () const
	Index accessors.
constexpr const RegClass &	regClass () const
	Class accessor.
constexpr RegClassType	classValue () const
constexpr const char *	className () const
	Return a const char* with the register class name.
constexpr bool	isFlat () const
RegId	flatten (const BaseISA &isa) const
int	getNumPinnedWrites () const
void	setNumPinnedWrites (int num_writes)

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 93 of file reg_class.hh.

Constructor & Destructor Documentation

RegId() [1/2]

gem5::RegId::RegId ( )

inlineconstexpr

Definition at line 272 of file reg_class.hh.

References gem5::invalidRegClass(), and RegId().

Referenced by gem5::PhysRegId::className(), operator!=(), operator<(), operator<<, operator==(), gem5::PhysRegId::PhysRegId(), gem5::PhysRegId::PhysRegId(), and RegId().

RegId() [2/2]

gem5::RegId::RegId ( const RegClass & reg_class, RegIndex reg_idx )

inlineconstexpr

Definition at line 106 of file reg_class.hh.

References _regClass, numPinnedWrites, and regIdx.

Member Function Documentation

className()

const char * gem5::RegId::className ( ) const

inlineconstexpr

Return a const char* with the register class name.

Definition at line 281 of file reg_class.hh.

References _regClass.

Referenced by gem5::o3::Rename::renameDestRegs(), gem5::o3::Rename::renameSrcRegs(), and gem5::o3::ElasticTrace::updateRegDep().

classValue()

RegClassType gem5::RegId::classValue ( ) const

inlineconstexpr

Definition at line 280 of file reg_class.hh.

References _regClass.

Referenced by gem5::Checker< DynInstPtr >::copyResult(), isRenameable(), gem5::o3::UnifiedRenameMap::lookup(), std::hash< gem5::RegId >::operator()(), operator<(), operator==(), gem5::o3::UnifiedRenameMap::rename(), gem5::o3::Rename::renameSrcRegs(), and gem5::o3::UnifiedRenameMap::setEntry().

flatten()

RegId gem5::RegId::flatten ( const BaseISA & isa ) const

inline

Definition at line 285 of file reg_class.hh.

References _regClass.

Referenced by gem5::minor::Scoreboard::canInstIssue(), gem5::minor::Scoreboard::execSeqNumToWaitFor(), gem5::SimpleThread::getReg(), gem5::SimpleThread::getReg(), gem5::SimpleThread::getWritableReg(), gem5::minor::Scoreboard::markupInstDests(), gem5::o3::Rename::renameDestRegs(), gem5::o3::Rename::renameSrcRegs(), gem5::SimpleThread::setReg(), gem5::SimpleThread::setReg(), gem5::CheckerCPU::setRegOperand(), and gem5::CheckerCPU::setRegOperand().

getNumPinnedWrites()

int gem5::RegId::getNumPinnedWrites ( ) const

inline

Definition at line 162 of file reg_class.hh.

References numPinnedWrites.

Referenced by gem5::o3::SimpleRenameMap::rename(), and gem5::o3::Rename::renameDestRegs().

index()

RegIndex gem5::RegId::index ( ) const

inlineconstexpr

Index accessors.

Definition at line 151 of file reg_class.hh.

References regIdx.

Referenced by gem5::Checker< DynInstPtr >::copyResult(), gem5::o3::SimpleRenameMap::lookup(), gem5::o3::UnifiedRenameMap::lookup(), operator RegIndex(), std::hash< gem5::RegId >::operator()(), operator<(), operator==(), gem5::Iris::ThreadContext::readVecPredReg(), gem5::Iris::ThreadContext::readVecReg(), gem5::o3::SimpleRenameMap::rename(), gem5::o3::Rename::renameDestRegs(), gem5::o3::Rename::renameSrcRegs(), gem5::o3::SimpleRenameMap::setEntry(), and gem5::CheckerCPU::setMiscRegOperand().

is()

bool gem5::RegId::is ( RegClassType reg_class ) const

inlineconstexpr

Returns

true if it is of the specified class.

Definition at line 275 of file reg_class.hh.

References _regClass.

Referenced by gem5::o3::SimpleRenameMap::rename(), and gem5::o3::ElasticTrace::updateRegDep().

isFlat()

bool gem5::RegId::isFlat ( ) const

inlineconstexpr

Definition at line 283 of file reg_class.hh.

References _regClass.

isRenameable()

bool gem5::RegId::isRenameable ( ) const

inlineconstexpr

Return true if this register can be renamed.

Definition at line 141 of file reg_class.hh.

References classValue(), gem5::InvalidRegClass, and gem5::MiscRegClass.

Referenced by gem5::o3::DynInst::forwardOldRegs(), gem5::PhysRegId::isFixedMapping(), gem5::o3::UnifiedRenameMap::rename(), and gem5::o3::UnifiedRenameMap::setEntry().

operator RegIndex()

gem5::RegId::operator RegIndex ( ) const

inlineconstexpr

Definition at line 110 of file reg_class.hh.

References index().

operator!=()

bool gem5::RegId::operator!= ( const RegId & that ) const

inlineconstexpr

Definition at line 122 of file reg_class.hh.

References RegId().

Referenced by gem5::PhysRegId::operator!=().

operator<()

bool gem5::RegId::operator< ( const RegId & that ) const

inlineconstexpr

Order operator.

The order is required to implement maps with key type RegId

Definition at line 130 of file reg_class.hh.

References classValue(), index(), RegId(), and regIdx.

Referenced by gem5::PhysRegId::operator<().

operator==()

bool gem5::RegId::operator== ( const RegId & that ) const

inlineconstexpr

Definition at line 116 of file reg_class.hh.

References classValue(), index(), RegId(), and regIdx.

Referenced by gem5::PhysRegId::operator==().

regClass()

const RegClass & gem5::RegId::regClass ( ) const

inlineconstexpr

Class accessor.

Definition at line 154 of file reg_class.hh.

References _regClass.

Referenced by gem5::o3::DynInst::forwardOldRegs(), operator<<, gem5::CheckerCPU::setRegOperand(), and gem5::CheckerCPU::setRegOperand().

setNumPinnedWrites()

void gem5::RegId::setNumPinnedWrites ( int num_writes )

inline

Definition at line 163 of file reg_class.hh.

References numPinnedWrites.

Referenced by gem5::o3::Rename::renameDestRegs(), and gem5::RiscvISA::VPinVdMicroInst::VPinVdMicroInst().

Friends And Related Symbol Documentation

operator<<

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

friend

Definition at line 290 of file reg_class.hh.

References gem5::X86ISA::os, regClass(), RegId(), and gem5::RegClass::regName().

RegClassIterator

friend class RegClassIterator

friend

Definition at line 101 of file reg_class.hh.

References RegClassIterator.

Referenced by RegClassIterator.

std::hash< RegId >

friend struct std::hash< RegId >

friend

Definition at line 98 of file reg_class.hh.

Member Data Documentation

_regClass

const RegClass* gem5::RegId::_regClass = nullptr

protected

Definition at line 96 of file reg_class.hh.

Referenced by className(), classValue(), flatten(), is(), isFlat(), regClass(), and RegId().

numPinnedWrites

int gem5::RegId::numPinnedWrites

protected

Definition at line 98 of file reg_class.hh.

Referenced by gem5::PhysRegId::decrNumPinnedWrites(), gem5::PhysRegId::getNumPinnedWrites(), getNumPinnedWrites(), gem5::PhysRegId::incrNumPinnedWrites(), RegId(), gem5::PhysRegId::setNumPinnedWrites(), and setNumPinnedWrites().

regIdx

RegIndex gem5::RegId::regIdx

protected

Definition at line 97 of file reg_class.hh.

Referenced by index(), operator<(), operator==(), and RegId().

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

• cpu/reg_class.hh