gem5 v24.1.0.1
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Pattern entry data type, a set of stride and counter entries. More...
#include <signature_path.hh>
Public Member Functions | |
PatternEntry (size_t num_strides, unsigned counter_bits, TagExtractor ext) | |
void | invalidate () override |
Reset the entries to their initial values. | |
PatternStrideEntry * | findStride (stride_t stride) |
Returns the entry with the desired stride. | |
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. | |
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TaggedEntry () | |
~TaggedEntry ()=default | |
void | registerTagExtractor (TagExtractor ext) |
virtual bool | isValid () const |
Checks if the entry is valid. | |
bool | isSecure () const |
Check if this block holds data from the secure memory space. | |
virtual Addr | getTag () const |
Get tag associated to this block. | |
bool | match (const KeyType &key) const |
Checks if the given tag information corresponds to this entry's. | |
virtual void | insert (const KeyType &key) |
Insert the block by assigning it a tag and marking it valid. | |
std::string | print () const override |
Prints relevant information about this entry. | |
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ReplaceableEntry () | |
virtual | ~ReplaceableEntry ()=default |
virtual void | setPosition (const uint32_t set, const uint32_t way) |
Set both the set and way. | |
uint32_t | getSet () const |
Get set number. | |
uint32_t | getWay () const |
Get way number. | |
Public Attributes | |
std::vector< PatternStrideEntry > | strideEntries |
group of stides | |
SatCounter8 | counter |
use counter, used by SPPv2 | |
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std::shared_ptr< replacement_policy::ReplacementData > | replacementData |
Replacement data associated to this entry. | |
Additional Inherited Members | |
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using | KeyType = TaggedTypes::KeyType |
using | IndexingPolicy = TaggedIndexingPolicy |
using | TagExtractor = std::function< Addr(Addr)> |
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virtual void | setTag (Addr tag) |
Set tag associated to this block. | |
virtual void | setSecure () |
Set secure bit. | |
void | clearSecure () |
Clear secure bit. | |
virtual void | setValid () |
Set valid bit. | |
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TagExtractor | extractTag |
Callback used to extract the tag from the entry. | |
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uint32_t | _set |
Set to which this entry belongs. | |
uint32_t | _way |
Way (relative position within the set) to which this entry belongs. | |
Pattern entry data type, a set of stride and counter entries.
Definition at line 103 of file signature_path.hh.
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inline |
Definition at line 109 of file signature_path.hh.
References gem5::ArmISA::ext, and gem5::TaggedEntry::registerTagExtractor().
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inline |
Returns the entry with the desired stride.
stride | the stride to find |
Definition at line 135 of file signature_path.hh.
References gem5::ArmISA::stride, and strideEntries.
Referenced by getStrideEntry().
SignaturePath::PatternStrideEntry & gem5::prefetch::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.
stride | the stride to find |
Definition at line 75 of file signature_path.cc.
References gem5::GenericSatCounter< T >::counter, gem5::prefetch::SignaturePath::PatternStrideEntry::counter, findStride(), gem5::GenericSatCounter< T >::reset(), gem5::ArmISA::stride, gem5::prefetch::SignaturePath::PatternStrideEntry::stride, and strideEntries.
Referenced by gem5::prefetch::SignaturePath::updatePatternTable().
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inlineoverridevirtual |
Reset the entries to their initial values.
Reimplemented from gem5::TaggedEntry.
Definition at line 119 of file signature_path.hh.
References counter, gem5::TaggedEntry::invalidate(), gem5::GenericSatCounter< T >::reset(), and strideEntries.
SatCounter8 gem5::prefetch::SignaturePath::PatternEntry::counter |
use counter, used by SPPv2
Definition at line 108 of file signature_path.hh.
Referenced by gem5::prefetch::SignaturePathV2::calculateLookaheadConfidence(), gem5::prefetch::SignaturePathV2::calculatePrefetchConfidence(), gem5::prefetch::SignaturePathV2::increasePatternEntryCounter(), and invalidate().
std::vector<PatternStrideEntry> gem5::prefetch::SignaturePath::PatternEntry::strideEntries |
group of stides
Definition at line 106 of file signature_path.hh.
Referenced by gem5::prefetch::SignaturePath::calculatePrefetch(), findStride(), getStrideEntry(), gem5::prefetch::SignaturePathV2::increasePatternEntryCounter(), and invalidate().