gem5::o3::SimpleFreeList Class Reference

Free list for a single class of registers (e.g., integer or floating point). More...

#include <free_list.hh>

Public Member Functions
	SimpleFreeList ()
void	addReg (PhysRegIdPtr reg)
	Add a physical register to the free list. More...
template<class InputIt >
void	addRegs (InputIt first, InputIt last)
	Add physical registers to the free list. More...
PhysRegIdPtr	getReg ()
	Get the next available register from the free list. More...
unsigned	numFreeRegs () const
	Return the number of free registers on the list. More...
bool	hasFreeRegs () const
	True iff there are free registers on the list. More...

Private Attributes
std::queue< PhysRegIdPtr >	freeRegs
	The actual free list. More...

Detailed Description

Free list for a single class of registers (e.g., integer or floating point).

Because the register class is implicitly determined by the rename map instance being accessed, all architectural register index parameters and values in this class are relative (e.g., fp2 is just index 2).

Definition at line 69 of file free_list.hh.

Constructor & Destructor Documentation

SimpleFreeList()

gem5::o3::SimpleFreeList::SimpleFreeList ( )

inline

Definition at line 78 of file free_list.hh.

Member Function Documentation

addReg()

void gem5::o3::SimpleFreeList::addReg ( PhysRegIdPtr  reg )

inline

Add a physical register to the free list.

Definition at line 81 of file free_list.hh.

References freeRegs, and gem5::X86ISA::reg.

Referenced by gem5::o3::UnifiedFreeList::addCCReg(), gem5::o3::UnifiedFreeList::addFloatReg(), gem5::o3::UnifiedFreeList::addIntReg(), gem5::o3::UnifiedFreeList::addReg(), gem5::o3::UnifiedFreeList::addVecElem(), gem5::o3::UnifiedFreeList::addVecPredReg(), and gem5::o3::UnifiedFreeList::addVecReg().

addRegs()

template<class InputIt >

void gem5::o3::SimpleFreeList::addRegs ( InputIt  first, InputIt  last  )

inline

Add physical registers to the free list.

Definition at line 86 of file free_list.hh.

References freeRegs, and gem5::X86ISA::reg.

Referenced by gem5::o3::UnifiedFreeList::addRegs().

getReg()

PhysRegIdPtr gem5::o3::SimpleFreeList::getReg ( )

inline

Get the next available register from the free list.

Definition at line 93 of file free_list.hh.

References freeRegs.

Referenced by gem5::o3::UnifiedFreeList::getCCReg(), gem5::o3::UnifiedFreeList::getFloatReg(), gem5::o3::UnifiedFreeList::getIntReg(), gem5::o3::UnifiedFreeList::getVecElem(), gem5::o3::UnifiedFreeList::getVecPredReg(), gem5::o3::UnifiedFreeList::getVecReg(), and gem5::o3::SimpleRenameMap::rename().

hasFreeRegs()

bool gem5::o3::SimpleFreeList::hasFreeRegs ( ) const

inline

True iff there are free registers on the list.

Definition at line 105 of file free_list.hh.

References freeRegs.

Referenced by gem5::o3::UnifiedFreeList::hasFreeCCRegs(), gem5::o3::UnifiedFreeList::hasFreeFloatRegs(), gem5::o3::UnifiedFreeList::hasFreeIntRegs(), gem5::o3::UnifiedFreeList::hasFreeVecElems(), gem5::o3::UnifiedFreeList::hasFreeVecPredRegs(), and gem5::o3::UnifiedFreeList::hasFreeVecRegs().

numFreeRegs()

unsigned gem5::o3::SimpleFreeList::numFreeRegs ( ) const

inline

Return the number of free registers on the list.

Definition at line 102 of file free_list.hh.

References freeRegs.

Referenced by gem5::o3::UnifiedFreeList::numFreeCCRegs(), gem5::o3::SimpleRenameMap::numFreeEntries(), gem5::o3::UnifiedFreeList::numFreeFloatRegs(), gem5::o3::UnifiedFreeList::numFreeIntRegs(), gem5::o3::UnifiedFreeList::numFreeVecElems(), gem5::o3::UnifiedFreeList::numFreeVecPredRegs(), and gem5::o3::UnifiedFreeList::numFreeVecRegs().

Member Data Documentation

freeRegs

std::queue<PhysRegIdPtr> gem5::o3::SimpleFreeList::freeRegs

private

The actual free list.

Definition at line 74 of file free_list.hh.

Referenced by addReg(), addRegs(), getReg(), hasFreeRegs(), and numFreeRegs().

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

• cpu/o3/free_list.hh