Pattern entry data type, a set of stride and counter entries. More...

#include <signature_path.hh>

Inheritance diagram for Prefetcher::SignaturePath::PatternEntry:

Public Member Functions
	PatternEntry (size_t num_strides, unsigned counter_bits)

void	invalidate () override
	Reset the entries to their initial values. More...

PatternStrideEntry *	findStride (stride_t stride)
	Returns the entry with the desired stride. More...

PatternStrideEntry &	getStrideEntry (stride_t stride)
	Gets the entry with the provided stride, if there is no entry with the associated stride, it replaces one of them. More...

Public Member Functions inherited from TaggedEntry
	TaggedEntry ()

virtual	~TaggedEntry ()

bool	isValid () const
	Consult the valid bit. More...

void	setValid ()
	Sets the entry to valid. More...

Addr	getTag () const
	Obtain the entry tag. More...

void	setTag (Addr t)
	Sets the tag of the entry. More...

bool	isSecure () const
	Consult if this entry refers to a memory in the secure area. More...

void	setSecure (bool s)
	Sets the secure value bit. More...

Public Member Functions inherited from ReplaceableEntry
	ReplaceableEntry ()=default

virtual	~ReplaceableEntry ()=default

virtual void	setPosition (const uint32_t set, const uint32_t way)
	Set both the set and way. More...

uint32_t	getSet () const
	Get set number. More...

uint32_t	getWay () const
	Get way number. More...

virtual std::string	print () const
	Prints relevant information about this entry. More...

Public Attributes
std::vector< PatternStrideEntry >	strideEntries
	group of stides More...

SatCounter	counter
	use counter, used by SPPv2 More...

Public Attributes inherited from ReplaceableEntry
std::shared_ptr< ReplacementData >	replacementData
	Replacement data associated to this entry. More...

Additional Inherited Members
Protected Attributes inherited from ReplaceableEntry
uint32_t	_set
	Set to which this entry belongs. More...

uint32_t	_way
	Way (relative position within the set) to which this entry belongs. More...

Detailed Description

Pattern entry data type, a set of stride and counter entries.

Definition at line 95 of file signature_path.hh.

Constructor & Destructor Documentation

◆ PatternEntry()

Prefetcher::SignaturePath::PatternEntry::PatternEntry	(	size_t	num_strides,
		unsigned	counter_bits
	)

inline

Definition at line 101 of file signature_path.hh.

Member Function Documentation

◆ findStride()

PatternStrideEntry* Prefetcher::SignaturePath::PatternEntry::findStride ( stride_t stride )

inline

Returns the entry with the desired stride.

Parameters

stride the stride to find

Returns: a pointer to the entry, if the stride was found, or nullptr, if the stride was not found

Definition at line 125 of file signature_path.hh.

References ArmISA::stride, and strideEntries.

Referenced by getStrideEntry().

◆ getStrideEntry()

SignaturePath::PatternStrideEntry & Prefetcher::SignaturePath::PatternEntry::getStrideEntry ( stride_t stride )

Gets the entry with the provided stride, if there is no entry with the associated stride, it replaces one of them.

Parameters

stride the stride to find

Returns: reference to the selected entry

Definition at line 66 of file signature_path.cc.

References Prefetcher::SignaturePath::PatternStrideEntry::counter, SatCounter::counter, findStride(), SatCounter::reset(), Prefetcher::SignaturePath::PatternStrideEntry::stride, ArmISA::stride, and strideEntries.

Referenced by Prefetcher::SignaturePath::updatePatternTable().

◆ invalidate()

void Prefetcher::SignaturePath::PatternEntry::invalidate ( )

inlineoverridevirtual

Reset the entries to their initial values.

Reimplemented from TaggedEntry.

Definition at line 109 of file signature_path.hh.

References counter, TaggedEntry::invalidate(), SatCounter::reset(), and strideEntries.

Member Data Documentation

◆ counter

SatCounter Prefetcher::SignaturePath::PatternEntry::counter

use counter, used by SPPv2

Definition at line 100 of file signature_path.hh.

Referenced by Prefetcher::SignaturePathV2::calculateLookaheadConfidence(), Prefetcher::SignaturePathV2::calculatePrefetchConfidence(), Prefetcher::SignaturePathV2::increasePatternEntryCounter(), and invalidate().

◆ strideEntries

std::vector<PatternStrideEntry> Prefetcher::SignaturePath::PatternEntry::strideEntries

group of stides

Definition at line 98 of file signature_path.hh.

Referenced by Prefetcher::SignaturePath::calculatePrefetch(), findStride(), getStrideEntry(), Prefetcher::SignaturePathV2::increasePatternEntryCounter(), and invalidate().

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

mem/cache/prefetch/signature_path.hh
mem/cache/prefetch/signature_path.cc

Public Member Functions

Public Attributes

Additional Inherited Members