1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* Copyright 2019 Texas A&M University
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Author: Daniel A. Jiménez
* Adapted to gem5 by: Javier Bueno Hedo
*
*/
/*
* Multiperspective Perceptron Predictor with TAGE (by Daniel A. Jiménez)
* 64 KB version
*/
#ifndef __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_64KB_HH__
#define __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_64KB_HH__
#include "cpu/pred/multiperspective_perceptron_tage.hh"
#include "params/MPP_StatisticalCorrector_64KB.hh"
#include "params/MultiperspectivePerceptronTAGE64KB.hh"
class MPP_StatisticalCorrector_64KB : public MPP_StatisticalCorrector {
const unsigned numEntriesSecondLocalHistories;
const unsigned numEntriesThirdLocalHistories;
// Second local history GEHL
const unsigned snb;
const unsigned logSnb;
std::vector<int> sm;
std::vector<int8_t> * sgehl;
std::vector<int8_t> ws;
// Third local history GEHL
const unsigned tnb;
const unsigned logTnb;
std::vector<int> tm;
std::vector<int8_t> * tgehl;
std::vector<int8_t> wt;
StatisticalCorrector::SCThreadHistory *makeThreadHistory() override;
int gPredictions(ThreadID tid, Addr branch_pc,
StatisticalCorrector::BranchInfo* bi, int &lsum, int64_t phist)
override;
void getBiasLSUM(Addr branch_pc,
StatisticalCorrector::BranchInfo *bi, int &lsum) const override;
void gUpdates(ThreadID tid, Addr pc, bool taken,
StatisticalCorrector::BranchInfo* bi, int64_t phist) override;
void scHistoryUpdate(Addr branch_pc, const StaticInstPtr &inst, bool taken,
StatisticalCorrector::BranchInfo *bi, Addr corrTarget) override;
public:
MPP_StatisticalCorrector_64KB(
const MPP_StatisticalCorrector_64KBParams *p);
size_t getSizeInBits() const override;
};
class MultiperspectivePerceptronTAGE64KB :
public MultiperspectivePerceptronTAGE {
void createSpecs() override;
public:
MultiperspectivePerceptronTAGE64KB(
const MultiperspectivePerceptronTAGE64KBParams *p);
};
#endif // __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_64KB_HH__
|
