3724fb15fa
Eliminate the VSZ constant that defined the Wavefront size (in numbers of work items); replaced it with a parameter in the GPU.py configuration script. Changed all data structures dependent on the Wavefront size to be dynamically sized. Legal values of Wavefront size are 16, 32, 64 for now and checked at initialization time.
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*
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* Copyright (c) 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: John Kalamatianos
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*/
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#ifndef __VECTOR_REGISTER_STATE_HH__
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#define __VECTOR_REGISTER_STATE_HH__
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#include <array>
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#include <cassert>
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#include <string>
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#include <vector>
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#include "gpu-compute/misc.hh"
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class ComputeUnit;
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// Vector Register State per SIMD unit (contents of the vector
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// registers in the VRF of the SIMD)
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class VecRegisterState
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{
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public:
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VecRegisterState();
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void init(uint32_t _size, uint32_t wf_size);
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const std::string& name() const { return _name; }
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void setParent(ComputeUnit *_computeUnit);
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void regStats() { }
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// Access methods
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template<typename T>
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T
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read(int regIdx, int threadId=0) {
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T *p0;
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assert(sizeof(T) == 4 || sizeof(T) == 8);
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if (sizeof(T) == 4) {
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p0 = (T*)(&s_reg[regIdx][threadId]);
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} else {
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p0 = (T*)(&d_reg[regIdx][threadId]);
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}
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return *p0;
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}
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template<typename T>
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void
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write(unsigned int regIdx, T value, int threadId=0) {
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T *p0;
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assert(sizeof(T) == 4 || sizeof(T) == 8);
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if (sizeof(T) == 4) {
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p0 = (T*)(&s_reg[regIdx][threadId]);
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} else {
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p0 = (T*)(&d_reg[regIdx][threadId]);
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}
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*p0 = value;
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}
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// (Single Precision) Vector Register File size.
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int regSize() { return s_reg.size(); }
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private:
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ComputeUnit *computeUnit;
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std::string _name;
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// 32-bit Single Precision Vector Register State
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std::vector<std::vector<uint32_t>> s_reg;
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// 64-bit Double Precision Vector Register State
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std::vector<std::vector<uint64_t>> d_reg;
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};
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#endif // __VECTOR_REGISTER_STATE_HH__
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