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/*
* 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)
* 8 KB version
*/
#ifndef __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_8KB_HH__
#define __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_8KB_HH__
#include "cpu/pred/multiperspective_perceptron_tage.hh"
#include "params/MPP_LoopPredictor_8KB.hh"
#include "params/MPP_StatisticalCorrector_8KB.hh"
#include "params/MPP_TAGE_8KB.hh"
#include "params/MultiperspectivePerceptronTAGE8KB.hh"
namespace gem5
{
namespace branch_prediction
{
class MPP_TAGE_8KB : public MPP_TAGE
{
public:
MPP_TAGE_8KB(const MPP_TAGE_8KBParams &p) : MPP_TAGE(p) {}
};
class MPP_LoopPredictor_8KB : public MPP_LoopPredictor
{
public:
MPP_LoopPredictor_8KB(const MPP_LoopPredictor_8KBParams &p) :
MPP_LoopPredictor(p) {}
};
class MPP_StatisticalCorrector_8KB : public MPP_StatisticalCorrector
{
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_8KB(const MPP_StatisticalCorrector_8KBParams &p);
size_t getSizeInBits() const override;
};
class MultiperspectivePerceptronTAGE8KB :
public MultiperspectivePerceptronTAGE
{
void createSpecs() override;
public:
MultiperspectivePerceptronTAGE8KB(
const MultiperspectivePerceptronTAGE8KBParams &p);
};
} // namespace branch_prediction
} // namespace gem5
#endif // __CPU_PRED_MULTIPERSPECTIVE_PERCEPTRON_TAGE_8KB_HH__