1/* 2 * Copyright 2019 Texas A&M University 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * 1. Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * 3. Neither the name of the copyright holder nor the names of its 15 * contributors may be used to endorse or promote products derived from this 16 * software without specific prior written permission. 17 * 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 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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 * 8 KB version 38 */ 39 40#ifndef __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_8KB_HH__ 41#define __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_8KB_HH__ 42 43#include "cpu/pred/multiperspective_perceptron_tage.hh" 44#include "params/MPP_LoopPredictor_8KB.hh" 45#include "params/MPP_StatisticalCorrector_8KB.hh" 46#include "params/MPP_TAGE_8KB.hh" 47#include "params/MultiperspectivePerceptronTAGE8KB.hh" 48 49class MPP_TAGE_8KB : public MPP_TAGE { 50 public: 51 MPP_TAGE_8KB(const MPP_TAGE_8KBParams *p) : MPP_TAGE(p) {} 52}; 53 54class MPP_LoopPredictor_8KB : public MPP_LoopPredictor { 55 public: 56 MPP_LoopPredictor_8KB(MPP_LoopPredictor_8KBParams *p) : 57 MPP_LoopPredictor(p) {} 58}; 59 60class MPP_StatisticalCorrector_8KB : public MPP_StatisticalCorrector { 61 StatisticalCorrector::SCThreadHistory *makeThreadHistory() override; 62 int gPredictions(ThreadID tid, Addr branch_pc, 63 StatisticalCorrector::BranchInfo* bi, int &lsum, int64_t phist) 64 override; 65 void getBiasLSUM(Addr branch_pc, 66 StatisticalCorrector::BranchInfo *bi, int &lsum) const override; 67 void gUpdates(ThreadID tid, Addr pc, bool taken, 68 StatisticalCorrector::BranchInfo* bi, int64_t phist) override; 69 void scHistoryUpdate(Addr branch_pc, const StaticInstPtr &inst, bool taken, 70 StatisticalCorrector::BranchInfo *bi, Addr corrTarget) override; 71 public: 72 MPP_StatisticalCorrector_8KB(const MPP_StatisticalCorrector_8KBParams *p); 73 size_t getSizeInBits() const override; 74}; 75 76class MultiperspectivePerceptronTAGE8KB : 77 public MultiperspectivePerceptronTAGE { 78 void createSpecs() override; 79 public: 80 MultiperspectivePerceptronTAGE8KB( 81 const MultiperspectivePerceptronTAGE8KBParams *p); 82}; 83 84#endif // __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_8KB_HH__ 85