src/gpu-compute/vector_register_state.cc

   1 /*
   2  * Copyright (c) 2015 Advanced Micro Devices, Inc.
   3  * All rights reserved.
   4  *
   5  * For use for simulation and test purposes only
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright notice,
  11  * this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright notice,
  14  * this list of conditions and the following disclaimer in the documentation
  15  * and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the copyright holder nor the names of its contributors
  18  * may be used to endorse or promote products derived from this software
  19  * without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * Author: John Kalamatianos
  34  */
  35
  36 #include "gpu-compute/vector_register_state.hh"
  37
  38 #include <limits>
  39
  40 #include "gpu-compute/compute_unit.hh"
  41
  42 VecRegisterState::VecRegisterState() : computeUnit(nullptr)
  43 {
  44     s_reg.clear();
  45     d_reg.clear();
  46 }
  47
  48 void
  49 VecRegisterState::setParent(ComputeUnit *_computeUnit)
  50 {
  51     computeUnit = _computeUnit;
  52     _name = computeUnit->name() + ".VecRegState";
  53 }
  54
  55 void
  56 VecRegisterState::init(uint32_t _size, uint32_t wf_size)
  57 {
  58     s_reg.resize(_size);
  59     fatal_if(wf_size > std::numeric_limits<unsigned long long>::digits ||
  60              wf_size <= 0,
  61              "WF size is larger than the host can support or is zero");
  62     fatal_if((wf_size & (wf_size - 1)) != 0,
  63              "Wavefront size should be a power of 2");
  64     for (int i = 0; i < s_reg.size(); ++i) {
  65         s_reg[i].resize(wf_size, 0);
  66     }
  67     d_reg.resize(_size);
  68     for (int i = 0; i < d_reg.size(); ++i) {
  69         d_reg[i].resize(wf_size, 0);
  70     }
  71 }