src/gpu-compute/static_register_manager_policy.hh

/*
 * Copyright (c) 2016 Advanced Micro Devices, Inc.
 * All rights reserved.
 *
 * 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
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 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 */

#ifndef __STATIC_REGISTER_MANAGER_POLICY_HH__
#define __STATIC_REGISTER_MANAGER_POLICY_HH__

#include "gpu-compute/register_manager_policy.hh"

namespace gem5
{

class HSAQueueEntry;

class StaticRegisterManagerPolicy : public RegisterManagerPolicy
{
  public:

    StaticRegisterManagerPolicy();

    void exec() override;

    int mapVgpr(Wavefront* w, int vgprIndex) override;
    int mapSgpr(Wavefront* w, int sgprIndex) override;

    bool canAllocateVgprs(int simdId, int nWfs, int demandPerWf) override;
    bool canAllocateSgprs(int simdId, int nWfs, int demandPerWf) override;

    void allocateRegisters(Wavefront *w, int vectorDemand,
        int scalarDemand) override;

    void freeRegisters(Wavefront *w) override;
};

} // namespace gem5

#endif // __STATIC_REGISTER_MANAGER_POLICY_HH__