85 lines
3.2 KiB
C++
85 lines
3.2 KiB
C++
/*
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* Copyright (c) 2015, PHILIPPE TILLET. All rights reserved.
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*
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* This file is part of ISAAC.
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*
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* ISAAC is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include "isaac/jit/generation/engine/stream.h"
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#include "isaac/jit/generation/base.h"
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#include <string>
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#include "isaac/tools/cpp/string.hpp"
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namespace isaac
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{
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namespace templates
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{
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inline void fetching_loop_info(fetching_policy_type policy, std::string const & bound, kernel_generation_stream & stream, std::string & init, std::string & upper_bound, std::string & inc, std::string const & domain_id, std::string const & domain_size, driver::Device const &)
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{
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if (policy==FETCH_FROM_GLOBAL_STRIDED)
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{
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init = domain_id;
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upper_bound = bound;
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inc = domain_size;
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}
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else if (policy==FETCH_FROM_GLOBAL_CONTIGUOUS)
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{
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std::string chunk_size = "chunk_size";
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std::string chunk_start = "chunk_start";
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std::string chunk_end = "chunk_end";
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stream << "$SIZE_T " << chunk_size << " = (" << bound << "+" << domain_size << "-1)/" << domain_size << ";" << std::endl;
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stream << "$SIZE_T " << chunk_start << " =" << domain_id << "*" << chunk_size << ";" << std::endl;
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stream << "$SIZE_T " << chunk_end << " = min(" << chunk_start << "+" << chunk_size << ", " << bound << ");" << std::endl;
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init = chunk_start;
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upper_bound = chunk_end;
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inc = "1";
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}
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}
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template<class Fun>
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inline void element_wise_loop_1D(kernel_generation_stream & stream, fetching_policy_type fetch, unsigned int simd_width,
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std::string const & i, std::string const & bound, std::string const & domain_id, std::string const & domain_size, driver::Device const & device, Fun const & generate_body)
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{
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std::string strwidth = tools::to_string(simd_width);
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std::string init, upper_bound, inc;
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fetching_loop_info(fetch, bound, stream, init, upper_bound, inc, domain_id, domain_size, device);
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std::string boundround = upper_bound + "/" + strwidth + "*" + strwidth;
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stream << "for(unsigned int " << i << " = " << init << "*" << strwidth << "; " << i << " < " << boundround << "; " << i << " += " << inc << "*" << strwidth << ")" << std::endl;
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stream << "{" << std::endl;
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stream.inc_tab();
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generate_body(simd_width);
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stream.dec_tab();
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stream << "}" << std::endl;
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if (simd_width>1)
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{
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stream << "for(unsigned int " << i << " = " << boundround << " + " << domain_id << "; " << i << " < " << bound << "; " << i << " += " + domain_size + ")" << std::endl;
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stream << "{" << std::endl;
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stream.inc_tab();
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generate_body(1);
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stream.dec_tab();
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stream << "}" << std::endl;
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}
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}
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}
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}
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