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. More...
constexpr bool	isRenameable () const
	Return true if this register can be renamed. More...
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. More...
constexpr const RegClass &	regClass () const
	Class accessor. More...
constexpr RegClassType	classValue () const
constexpr const char *	className () const
	Return a const char* with the register class name. More...
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 92 of file reg_class.hh.

Constructor & Destructor Documentation

RegId() [1/2]

constexpr gem5::RegId::RegId ( )

inlineconstexpr

Definition at line 266 of file reg_class.hh.

RegId() [2/2]

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

inlineconstexpr

Definition at line 105 of file reg_class.hh.

Member Function Documentation

className()

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

inlineconstexpr

Return a const char* with the register class name.

Definition at line 275 of file reg_class.hh.

References _regClass, and gem5::RegClass::name().

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

classValue()

constexpr RegClassType gem5::RegId::classValue ( ) const

inlineconstexpr

Definition at line 274 of file reg_class.hh.

References _regClass, and gem5::RegClass::type().

Referenced by gem5::Checker< gem5::RefCountingPtr >::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 279 of file reg_class.hh.

References _regClass, and gem5::RegClass::flatten().

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

getNumPinnedWrites()

int gem5::RegId::getNumPinnedWrites ( ) const

inline

Definition at line 161 of file reg_class.hh.

References numPinnedWrites.

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

index()

constexpr RegIndex gem5::RegId::index ( ) const

inlineconstexpr

Index accessors.

Definition at line 150 of file reg_class.hh.

References regIdx.

Referenced by gem5::Checker< gem5::RefCountingPtr >::copyResult(), gem5::X86ISA::FloatRegClassOps::flatten(), gem5::ArmISA::IntRegClassOps::flatten(), 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()

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

inlineconstexpr

Returns

true if it is of the specified class.

Definition at line 269 of file reg_class.hh.

References _regClass, and gem5::RegClass::type().

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

isFlat()

constexpr bool gem5::RegId::isFlat ( ) const

inlineconstexpr

Definition at line 277 of file reg_class.hh.

References _regClass, and gem5::RegClass::isFlat().

isRenameable()

constexpr bool gem5::RegId::isRenameable ( ) const

inlineconstexpr

Return true if this register can be renamed.

Definition at line 140 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()

constexpr gem5::RegId::operator RegIndex ( ) const

inlineconstexpr

Definition at line 109 of file reg_class.hh.

References index().

operator!=()

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

inlineconstexpr

Definition at line 121 of file reg_class.hh.

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

operator<()

constexpr 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(), and regIdx.

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

operator==()

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

inlineconstexpr

Definition at line 115 of file reg_class.hh.

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

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

regClass()

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

inlineconstexpr

Class accessor.

Definition at line 153 of file reg_class.hh.

References _regClass.

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

setNumPinnedWrites()

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

inline

Definition at line 162 of file reg_class.hh.

References numPinnedWrites.

Referenced by gem5::o3::Rename::renameDestRegs().

Friends And Related Function Documentation

operator<<

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

friend

Definition at line 285 of file reg_class.hh.

RegClassIterator

friend class RegClassIterator

friend

Definition at line 100 of file reg_class.hh.

std::hash< RegId >

friend struct std::hash< RegId >

friend

Definition at line 99 of file reg_class.hh.

Member Data Documentation

_regClass

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

protected

Definition at line 95 of file reg_class.hh.

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

numPinnedWrites

int gem5::RegId::numPinnedWrites

protected

Definition at line 97 of file reg_class.hh.

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

regIdx

RegIndex gem5::RegId::regIdx

protected

Definition at line 96 of file reg_class.hh.

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

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

• cpu/reg_class.hh