gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories Class Reference

Local history entries, each enty contains the history of directions taken by a given branch. More...

#include <multiperspective_perceptron.hh>

Public Member Functions
	LocalHistories (int nlocal_histories, int histo_len)
unsigned int	operator[] (Addr pc) const
	Obtains the local history entry of a given branch.
void	update (Addr pc, bool value)
	Adds a history bit to the local history entry of a given branch.
int	getLocalHistoryLength () const
	Returns the number of bits of each local history entry.
int	getSize () const
	Size in bits required by all history entries.

Private Member Functions
unsigned int	index (Addr pc) const
	Index function given the pc of the branch.

Private Attributes
std::vector< unsigned int >	localHistories
	The array of histories.
const int	localHistoryLength
	Size in bits of each history entry.

Detailed Description

Local history entries, each enty contains the history of directions taken by a given branch.

Definition at line 178 of file multiperspective_perceptron.hh.

Constructor & Destructor Documentation

LocalHistories()

gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::LocalHistories ( int  nlocal_histories, int  histo_len  )

inline

Definition at line 190 of file multiperspective_perceptron.hh.

Member Function Documentation

getLocalHistoryLength()

int gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::getLocalHistoryLength ( ) const

inline

Returns the number of bits of each local history entry.

Definition at line 210 of file multiperspective_perceptron.hh.

References localHistoryLength.

getSize()

int gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::getSize ( ) const

inline

Size in bits required by all history entries.

Definition at line 216 of file multiperspective_perceptron.hh.

References localHistories, and localHistoryLength.

index()

unsigned int gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::index ( Addr  pc ) const

inlineprivate

Index function given the pc of the branch.

Definition at line 186 of file multiperspective_perceptron.hh.

References localHistories, and gem5::MipsISA::pc.

operator[]()

unsigned int gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::operator[] ( Addr  pc ) const

inline

Obtains the local history entry of a given branch.

Definition at line 194 of file multiperspective_perceptron.hh.

References gem5::MipsISA::index, localHistories, and gem5::MipsISA::pc.

update()

void gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::update ( Addr  pc, bool  value  )

inline

Adds a history bit to the local history entry of a given branch.

Definition at line 200 of file multiperspective_perceptron.hh.

References gem5::MipsISA::index, localHistories, localHistoryLength, and gem5::MipsISA::pc.

Member Data Documentation

localHistories

std::vector<unsigned int> gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::localHistories

private

The array of histories.

Definition at line 181 of file multiperspective_perceptron.hh.

Referenced by getSize(), index(), operator[](), and update().

localHistoryLength

const int gem5::branch_prediction::MultiperspectivePerceptron::LocalHistories::localHistoryLength

private

Size in bits of each history entry.

Definition at line 183 of file multiperspective_perceptron.hh.

Referenced by getLocalHistoryLength(), getSize(), and update().

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

• cpu/pred/multiperspective_perceptron.hh