gem5  v21.2.0.0
multiperspective_perceptron_tage_64KB.hh
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1 /*
2  * Copyright 2019 Texas A&M University
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11  * this list of conditions and the following disclaimer in the documentation
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16  * software without specific prior written permission.
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18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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29  *
30  * Author: Daniel A. Jiménez
31  * Adapted to gem5 by: Javier Bueno Hedo
32  *
33  */
34 
35 /*
36  * Multiperspective Perceptron Predictor with TAGE (by Daniel A. Jiménez)
37  * 64 KB version
38  */
39 #ifndef __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_64KB_HH__
40 #define __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_64KB_HH__
41 
43 #include "params/MPP_StatisticalCorrector_64KB.hh"
44 #include "params/MultiperspectivePerceptronTAGE64KB.hh"
45 
46 namespace gem5
47 {
48 
49 namespace branch_prediction
50 {
51 
53 {
56 
57  // Second local history GEHL
58  const unsigned snb;
59  const unsigned logSnb;
63 
64  // Third local history GEHL
65  const unsigned tnb;
66  const unsigned logTnb;
70 
72  int gPredictions(ThreadID tid, Addr branch_pc,
73  StatisticalCorrector::BranchInfo* bi, int &lsum, int64_t phist)
74  override;
75  void getBiasLSUM(Addr branch_pc,
76  StatisticalCorrector::BranchInfo *bi, int &lsum) const override;
77  void gUpdates(ThreadID tid, Addr pc, bool taken,
78  StatisticalCorrector::BranchInfo* bi, int64_t phist) override;
79  void scHistoryUpdate(Addr branch_pc, const StaticInstPtr &inst, bool taken,
80  StatisticalCorrector::BranchInfo *bi, Addr corrTarget) override;
81  public:
83  const MPP_StatisticalCorrector_64KBParams &p);
84  size_t getSizeInBits() const override;
85 };
86 
89  void createSpecs() override;
90  public:
92  const MultiperspectivePerceptronTAGE64KBParams &p);
93 };
94 
95 } // namespace branch_prediction
96 } // namespace gem5
97 
98 #endif // __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_64KB_HH__
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::logSnb
const unsigned logSnb
Definition: multiperspective_perceptron_tage_64KB.hh:59
gem5::branch_prediction::MultiperspectivePerceptronTAGE64KB
Definition: multiperspective_perceptron_tage_64KB.hh:87
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::logTnb
const unsigned logTnb
Definition: multiperspective_perceptron_tage_64KB.hh:66
gem5::branch_prediction::MultiperspectivePerceptronTAGE64KB::MultiperspectivePerceptronTAGE64KB
MultiperspectivePerceptronTAGE64KB(const MultiperspectivePerceptronTAGE64KBParams &p)
Definition: multiperspective_perceptron_tage_64KB.cc:205
std::vector< int >
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::wt
std::vector< int8_t > wt
Definition: multiperspective_perceptron_tage_64KB.hh:69
gem5::PowerISA::bi
Bitfield< 20, 16 > bi
Definition: types.hh:80
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::ws
std::vector< int8_t > ws
Definition: multiperspective_perceptron_tage_64KB.hh:62
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::numEntriesSecondLocalHistories
const unsigned numEntriesSecondLocalHistories
Definition: multiperspective_perceptron_tage_64KB.hh:54
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::numEntriesThirdLocalHistories
const unsigned numEntriesThirdLocalHistories
Definition: multiperspective_perceptron_tage_64KB.hh:55
gem5::RefCountingPtr< StaticInst >
gem5::branch_prediction::MPP_StatisticalCorrector
Definition: multiperspective_perceptron_tage.hh:103
multiperspective_perceptron_tage.hh
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::branch_prediction::MultiperspectivePerceptronTAGE64KB::createSpecs
void createSpecs() override
Creates the tables of the predictor.
Definition: multiperspective_perceptron_tage_64KB.cc:212
gem5::branch_prediction::MPP_StatisticalCorrector_64KB
Definition: multiperspective_perceptron_tage_64KB.hh:52
gem5::Addr
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::tm
std::vector< int > tm
Definition: multiperspective_perceptron_tage_64KB.hh:67
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::gUpdates
void gUpdates(ThreadID tid, Addr pc, bool taken, StatisticalCorrector::BranchInfo *bi, int64_t phist) override
Definition: multiperspective_perceptron_tage_64KB.cc:120
gem5::branch_prediction::StatisticalCorrector::BranchInfo
Definition: statistical_corrector.hh:200
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::getBiasLSUM
void getBiasLSUM(Addr branch_pc, StatisticalCorrector::BranchInfo *bi, int &lsum) const override
Definition: multiperspective_perceptron_tage_64KB.cc:79
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::gPredictions
int gPredictions(ThreadID tid, Addr branch_pc, StatisticalCorrector::BranchInfo *bi, int &lsum, int64_t phist) override
Definition: multiperspective_perceptron_tage_64KB.cc:89
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::sm
std::vector< int > sm
Definition: multiperspective_perceptron_tage_64KB.hh:60
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::makeThreadHistory
StatisticalCorrector::SCThreadHistory * makeThreadHistory() override
Definition: multiperspective_perceptron_tage_64KB.cc:65
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::tgehl
std::vector< int8_t > * tgehl
Definition: multiperspective_perceptron_tage_64KB.hh:68
gem5::branch_prediction::MultiperspectivePerceptronTAGE
Definition: multiperspective_perceptron_tage.hh:193
gem5::MipsISA::pc
Bitfield< 4 > pc
Definition: pra_constants.hh:243
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::sgehl
std::vector< int8_t > * sgehl
Definition: multiperspective_perceptron_tage_64KB.hh:61
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::getSizeInBits
size_t getSizeInBits() const override
Definition: multiperspective_perceptron_tage_64KB.cc:167
gem5::branch_prediction::StatisticalCorrector::SCThreadHistory
Definition: statistical_corrector.hh:75
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::tnb
const unsigned tnb
Definition: multiperspective_perceptron_tage_64KB.hh:65
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::scHistoryUpdate
void scHistoryUpdate(Addr branch_pc, const StaticInstPtr &inst, bool taken, StatisticalCorrector::BranchInfo *bi, Addr corrTarget) override
Definition: multiperspective_perceptron_tage_64KB.cc:142
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::MPP_StatisticalCorrector_64KB
MPP_StatisticalCorrector_64KB(const MPP_StatisticalCorrector_64KBParams &p)
Definition: multiperspective_perceptron_tage_64KB.cc:48
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: tlb.cc:60
gem5::branch_prediction::MPP_StatisticalCorrector_64KB::snb
const unsigned snb
Definition: multiperspective_perceptron_tage_64KB.hh:58
gem5::ThreadID
int16_t ThreadID
Thread index/ID type.
Definition: types.hh:242

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