FreeList class that simply holds the list of free integer and floating point registers. More...

#include <free_list.hh>

Public Member Functions
	UnifiedFreeList (const std::string &_my_name, PhysRegFile *_regFile)
	Constructs a free list. More...

std::string	name () const
	Gives the name of the freelist. More...

SimpleFreeList *	getCCList ()
	Returns a pointer to the condition-code free list. More...

PhysRegIdPtr	getIntReg ()
	Gets a free integer register. More...

PhysRegIdPtr	getFloatReg ()
	Gets a free fp register. More...

PhysRegIdPtr	getVecReg ()
	Gets a free vector register. More...

PhysRegIdPtr	getVecElem ()
	Gets a free vector elemenet register. More...

PhysRegIdPtr	getVecPredReg ()
	Gets a free predicate register. More...

PhysRegIdPtr	getCCReg ()
	Gets a free cc register. More...

void	addReg (PhysRegIdPtr freed_reg)
	Adds a register back to the free list. More...

template<class InputIt >
void	addRegs (InputIt first, InputIt last)
	Adds a register back to the free list. More...

void	addIntReg (PhysRegIdPtr freed_reg)
	Adds an integer register back to the free list. More...

void	addFloatReg (PhysRegIdPtr freed_reg)
	Adds a fp register back to the free list. More...

void	addVecReg (PhysRegIdPtr freed_reg)
	Adds a vector register back to the free list. More...

void	addVecElem (PhysRegIdPtr freed_reg)
	Adds a vector element register back to the free list. More...

void	addVecPredReg (PhysRegIdPtr freed_reg)
	Adds a predicate register back to the free list. More...

void	addCCReg (PhysRegIdPtr freed_reg)
	Adds a cc register back to the free list. More...

bool	hasFreeIntRegs () const
	Checks if there are any free integer registers. More...

bool	hasFreeFloatRegs () const
	Checks if there are any free fp registers. More...

bool	hasFreeVecRegs () const
	Checks if there are any free vector registers. More...

bool	hasFreeVecElems () const
	Checks if there are any free vector registers. More...

bool	hasFreeVecPredRegs () const
	Checks if there are any free predicate registers. More...

bool	hasFreeCCRegs () const
	Checks if there are any free cc registers. More...

unsigned	numFreeIntRegs () const
	Returns the number of free integer registers. More...

unsigned	numFreeFloatRegs () const
	Returns the number of free fp registers. More...

unsigned	numFreeVecRegs () const
	Returns the number of free vector registers. More...

unsigned	numFreeVecElems () const
	Returns the number of free vector registers. More...

unsigned	numFreeVecPredRegs () const
	Returns the number of free predicate registers. More...

unsigned	numFreeCCRegs () const
	Returns the number of free cc registers. More...

Private Attributes
const std::string	_name
	The object name, for DPRINTF. More...

SimpleFreeList	intList
	The list of free integer registers. More...

SimpleFreeList	floatList
	The list of free floating point registers. More...

SimpleFreeList	predList
	The list of free predicate registers. More...

SimpleFreeList	ccList
	The list of free condition-code registers. More...

PhysRegFile *	regFile
	The register file object is used only to distinguish integer from floating-point physical register indices. More...


SimpleFreeList	vecList
	The following two are exclusive interfaces. More...

SimpleFreeList	vecElemList
	The list of free vector element registers. More...

Friends
class	UnifiedRenameMap

Detailed Description

FreeList class that simply holds the list of free integer and floating point registers.

Can request for a free register of either type, and also send back free registers of either type. This is a very simple class, but it should be sufficient for most implementations. Like all other classes, it assumes that the indices for the floating point registers starts after the integer registers end. Hence the variable numPhysicalIntRegs is logically equivalent to the baseFP dependency. Note that while this most likely should be called FreeList, the name "FreeList" is used in a typedef within the CPU Policy, and therefore no class can be named simply "FreeList".

Todo:: : Give a better name to the base FP dependency.

Definition at line 115 of file free_list.hh.

Constructor & Destructor Documentation

◆ UnifiedFreeList()

UnifiedFreeList::UnifiedFreeList	(	const std::string &	_my_name,
		PhysRegFile *	_regFile
	)

Constructs a free list.

Parameters

_numPhysicalIntRegs	Number of physical integer registers.
reservedIntRegs	Number of integer registers already used by initial mappings.
_numPhysicalFloatRegs	Number of physical fp registers.
reservedFloatRegs	Number of fp registers already used by initial mappings.

Definition at line 37 of file free_list.cc.

References DPRINTF, PhysRegFile::initFreeList(), and regFile.

Member Function Documentation

◆ addCCReg()

void UnifiedFreeList::addCCReg ( PhysRegIdPtr freed_reg )

inline

Adds a cc register back to the free list.

Definition at line 217 of file free_list.hh.

References SimpleFreeList::addReg(), and ccList.

◆ addFloatReg()

void UnifiedFreeList::addFloatReg ( PhysRegIdPtr freed_reg )

inline

Adds a fp register back to the free list.

Definition at line 203 of file free_list.hh.

References SimpleFreeList::addReg(), and floatList.

◆ addIntReg()

void UnifiedFreeList::addIntReg ( PhysRegIdPtr freed_reg )

inline

Adds an integer register back to the free list.

Definition at line 200 of file free_list.hh.

References SimpleFreeList::addReg(), and intList.

◆ addReg()

void UnifiedFreeList::addReg ( PhysRegIdPtr freed_reg )

inline

Adds a register back to the free list.

Definition at line 296 of file free_list.hh.

References SimpleFreeList::addReg(), ccList, CCRegClass, PhysRegId::className(), PhysRegId::classValue(), DPRINTF, floatList, FloatRegClass, PhysRegId::index(), intList, IntRegClass, panic, predList, VecElemClass, vecElemList, vecList, VecPredRegClass, and VecRegClass.

◆ addRegs()

template<class InputIt >

void UnifiedFreeList::addRegs	(	InputIt	first,
		InputIt	last
	)

inline

Adds a register back to the free list.

Definition at line 258 of file free_list.hh.

References SimpleFreeList::addRegs(), ccList, CCRegClass, floatList, FloatRegClass, intList, IntRegClass, panic, panic_if, predList, VecElemClass, vecElemList, vecList, VecPredRegClass, and VecRegClass.

Referenced by PhysRegFile::initFreeList(), and UnifiedRenameMap::switchFreeList().

◆ addVecElem()

void UnifiedFreeList::addVecElem ( PhysRegIdPtr freed_reg )

inline

Adds a vector element register back to the free list.

Definition at line 209 of file free_list.hh.

References SimpleFreeList::addReg(), and vecElemList.

◆ addVecPredReg()

void UnifiedFreeList::addVecPredReg ( PhysRegIdPtr freed_reg )

inline

Adds a predicate register back to the free list.

Definition at line 214 of file free_list.hh.

References SimpleFreeList::addReg(), and predList.

◆ addVecReg()

void UnifiedFreeList::addVecReg ( PhysRegIdPtr freed_reg )

inline

Adds a vector register back to the free list.

Definition at line 206 of file free_list.hh.

References SimpleFreeList::addReg(), and vecList.

◆ getCCList()

SimpleFreeList* UnifiedFreeList::getCCList ( )

inline

Returns a pointer to the condition-code free list.

Definition at line 172 of file free_list.hh.

References ccList.

◆ getCCReg()

PhysRegIdPtr UnifiedFreeList::getCCReg ( )

inline

Gets a free cc register.

Definition at line 190 of file free_list.hh.

References ccList, and SimpleFreeList::getReg().

◆ getFloatReg()

PhysRegIdPtr UnifiedFreeList::getFloatReg ( )

inline

Gets a free fp register.

Definition at line 178 of file free_list.hh.

References floatList, and SimpleFreeList::getReg().

◆ getIntReg()

PhysRegIdPtr UnifiedFreeList::getIntReg ( )

inline

Gets a free integer register.

Definition at line 175 of file free_list.hh.

References SimpleFreeList::getReg(), and intList.

◆ getVecElem()

PhysRegIdPtr UnifiedFreeList::getVecElem ( )

inline

Gets a free vector elemenet register.

Definition at line 184 of file free_list.hh.

References SimpleFreeList::getReg(), and vecElemList.

Referenced by UnifiedRenameMap::switchFreeList().

◆ getVecPredReg()

PhysRegIdPtr UnifiedFreeList::getVecPredReg ( )

inline

Gets a free predicate register.

Definition at line 187 of file free_list.hh.

References SimpleFreeList::getReg(), and predList.

◆ getVecReg()

PhysRegIdPtr UnifiedFreeList::getVecReg ( )

inline

Gets a free vector register.

Definition at line 181 of file free_list.hh.

References SimpleFreeList::getReg(), and vecList.

Referenced by UnifiedRenameMap::switchFreeList().

◆ hasFreeCCRegs()

bool UnifiedFreeList::hasFreeCCRegs ( ) const

inline

Checks if there are any free cc registers.

Definition at line 235 of file free_list.hh.

References ccList, and SimpleFreeList::hasFreeRegs().

◆ hasFreeFloatRegs()

bool UnifiedFreeList::hasFreeFloatRegs ( ) const

inline

Checks if there are any free fp registers.

Definition at line 223 of file free_list.hh.

References floatList, and SimpleFreeList::hasFreeRegs().

◆ hasFreeIntRegs()

bool UnifiedFreeList::hasFreeIntRegs ( ) const

inline

Checks if there are any free integer registers.

Definition at line 220 of file free_list.hh.

References SimpleFreeList::hasFreeRegs(), and intList.

◆ hasFreeVecElems()

bool UnifiedFreeList::hasFreeVecElems ( ) const

inline

Checks if there are any free vector registers.

Definition at line 229 of file free_list.hh.

References SimpleFreeList::hasFreeRegs(), and vecElemList.

Referenced by UnifiedRenameMap::switchFreeList().

◆ hasFreeVecPredRegs()

bool UnifiedFreeList::hasFreeVecPredRegs ( ) const

inline

Checks if there are any free predicate registers.

Definition at line 232 of file free_list.hh.

References SimpleFreeList::hasFreeRegs(), and predList.

◆ hasFreeVecRegs()

bool UnifiedFreeList::hasFreeVecRegs ( ) const

inline

Checks if there are any free vector registers.

Definition at line 226 of file free_list.hh.

References SimpleFreeList::hasFreeRegs(), and vecList.

Referenced by UnifiedRenameMap::switchFreeList().

◆ name()

std::string UnifiedFreeList::name ( ) const

inline

Gives the name of the freelist.

Definition at line 169 of file free_list.hh.

References _name.

◆ numFreeCCRegs()

unsigned UnifiedFreeList::numFreeCCRegs ( ) const

inline

Returns the number of free cc registers.

Definition at line 253 of file free_list.hh.

References ccList, and SimpleFreeList::numFreeRegs().

◆ numFreeFloatRegs()

unsigned UnifiedFreeList::numFreeFloatRegs ( ) const

inline

Returns the number of free fp registers.

Definition at line 241 of file free_list.hh.

References floatList, and SimpleFreeList::numFreeRegs().

◆ numFreeIntRegs()

unsigned UnifiedFreeList::numFreeIntRegs ( ) const

inline

Returns the number of free integer registers.

Definition at line 238 of file free_list.hh.

References intList, and SimpleFreeList::numFreeRegs().

◆ numFreeVecElems()

unsigned UnifiedFreeList::numFreeVecElems ( ) const

inline

Returns the number of free vector registers.

Definition at line 247 of file free_list.hh.

References SimpleFreeList::numFreeRegs(), and vecElemList.

Referenced by UnifiedRenameMap::switchFreeList().

◆ numFreeVecPredRegs()

unsigned UnifiedFreeList::numFreeVecPredRegs ( ) const

inline

Returns the number of free predicate registers.

Definition at line 250 of file free_list.hh.

References SimpleFreeList::numFreeRegs(), and predList.

◆ numFreeVecRegs()

unsigned UnifiedFreeList::numFreeVecRegs ( ) const

inline

Returns the number of free vector registers.

Definition at line 244 of file free_list.hh.

References SimpleFreeList::numFreeRegs(), and vecList.

Referenced by UnifiedRenameMap::switchFreeList().

Friends And Related Function Documentation

◆ UnifiedRenameMap

friend class UnifiedRenameMap

friend

Definition at line 155 of file free_list.hh.

Member Data Documentation

◆ _name

const std::string UnifiedFreeList::_name

private

The object name, for DPRINTF.

We have to declare this explicitly because Scoreboard is not a SimObject.

Definition at line 121 of file free_list.hh.

Referenced by name().

◆ ccList

SimpleFreeList UnifiedFreeList::ccList

private

The list of free condition-code registers.

Definition at line 142 of file free_list.hh.

Referenced by addCCReg(), addReg(), addRegs(), getCCList(), getCCReg(), hasFreeCCRegs(), UnifiedRenameMap::init(), and numFreeCCRegs().

◆ floatList

SimpleFreeList UnifiedFreeList::floatList

private

The list of free floating point registers.

Definition at line 127 of file free_list.hh.

Referenced by addFloatReg(), addReg(), addRegs(), getFloatReg(), hasFreeFloatRegs(), UnifiedRenameMap::init(), and numFreeFloatRegs().

◆ intList

SimpleFreeList UnifiedFreeList::intList

private

The list of free integer registers.

Definition at line 124 of file free_list.hh.

Referenced by addIntReg(), addReg(), addRegs(), getIntReg(), hasFreeIntRegs(), UnifiedRenameMap::init(), and numFreeIntRegs().

◆ predList

SimpleFreeList UnifiedFreeList::predList

private

The list of free predicate registers.

Definition at line 139 of file free_list.hh.

Referenced by addReg(), addRegs(), addVecPredReg(), getVecPredReg(), hasFreeVecPredRegs(), UnifiedRenameMap::init(), and numFreeVecPredRegs().

◆ regFile

PhysRegFile* UnifiedFreeList::regFile

private

The register file object is used only to distinguish integer from floating-point physical register indices.

Definition at line 148 of file free_list.hh.

Referenced by UnifiedFreeList().

◆ vecElemList

SimpleFreeList UnifiedFreeList::vecElemList

private

The list of free vector element registers.

Definition at line 135 of file free_list.hh.

Referenced by addReg(), addRegs(), addVecElem(), getVecElem(), hasFreeVecElems(), UnifiedRenameMap::init(), and numFreeVecElems().

◆ vecList

SimpleFreeList UnifiedFreeList::vecList

private

The following two are exclusive interfaces.

The list of free vector registers.

Definition at line 132 of file free_list.hh.

Referenced by addReg(), addRegs(), addVecReg(), getVecReg(), hasFreeVecRegs(), UnifiedRenameMap::init(), and numFreeVecRegs().

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

cpu/o3/free_list.hh
cpu/o3/free_list.cc

Public Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ UnifiedFreeList()

Member Function Documentation

◆ addCCReg()

◆ addFloatReg()

◆ addIntReg()

◆ addReg()

◆ addRegs()

◆ addVecElem()

◆ addVecPredReg()

◆ addVecReg()

◆ getCCList()

◆ getCCReg()

◆ getFloatReg()

◆ getIntReg()

◆ getVecElem()

◆ getVecPredReg()

◆ getVecReg()

◆ hasFreeCCRegs()

◆ hasFreeFloatRegs()

◆ hasFreeIntRegs()

◆ hasFreeVecElems()

◆ hasFreeVecPredRegs()

◆ hasFreeVecRegs()

◆ name()

◆ numFreeCCRegs()

◆ numFreeFloatRegs()

◆ numFreeIntRegs()

◆ numFreeVecElems()

◆ numFreeVecPredRegs()

◆ numFreeVecRegs()

Friends And Related Function Documentation

◆ UnifiedRenameMap

Member Data Documentation

◆ _name

◆ ccList

◆ floatList

◆ intList

◆ predList

◆ regFile

◆ vecElemList

◆ vecList