1ab75c3ee2
appease clang by removing the unused private member variable, 'numGlbMemPipes', from the scoreboard check stage
106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/*
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* Copyright (c) 2014-2015 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Sooraj Puthoor
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*/
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#ifndef __SCOREBOARD_CHECK_STAGE_HH__
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#define __SCOREBOARD_CHECK_STAGE_HH__
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#include <cstdint>
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#include <string>
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#include <utility>
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#include <vector>
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class ComputeUnit;
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class Wavefront;
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struct ComputeUnitParams;
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enum WAVE_STATUS
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{
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BLOCKED = 0,
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READY
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};
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/*
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* Scoreboard check stage.
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* All wavefronts are analyzed to see if they are ready
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* to be executed this cycle. Both structural and data
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* hazards are considered while marking a wave "ready"
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* for execution. After analysis, the ready waves are
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* added to readyList.
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*/
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class ScoreboardCheckStage
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{
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public:
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ScoreboardCheckStage(const ComputeUnitParams* params);
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~ScoreboardCheckStage();
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void init(ComputeUnit *cu);
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void exec();
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// Stats related variables and methods
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const std::string& name() const { return _name; }
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void regStats();
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private:
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void collectStatistics(Wavefront *curWave, int unitId);
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void initStatistics();
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ComputeUnit *computeUnit;
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uint32_t numSIMDs;
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uint32_t numMemUnits;
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uint32_t numShrMemPipes;
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// flag per vector SIMD unit that is set when there is at least one
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// WF that has a vector ALU instruction as the oldest in its
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// Instruction Buffer
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std::vector<bool> *vectorAluInstAvail;
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int lastGlbMemSimd;
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int lastShrMemSimd;
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int *glbMemInstAvail;
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int *shrMemInstAvail;
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// List of waves which are ready to be scheduled.
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// Each execution resource has a ready list
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std::vector<std::vector<Wavefront*>*> readyList;
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// Stores the status of waves. A READY implies the
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// wave is ready to be scheduled this cycle and
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// is already present in the readyList
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std::vector<std::vector<std::pair<Wavefront*, WAVE_STATUS>>*>
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waveStatusList;
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std::string _name;
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};
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#endif // __SCOREBOARD_CHECK_STAGE_HH__
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