mirror of https://github.com/YosysHQ/yosys.git
63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
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/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "opt_status.h"
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#include "kernel/register.h"
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#include "kernel/log.h"
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#include <stdlib.h>
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#include <stdio.h>
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bool OPT_DID_SOMETHING;
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struct OptPass : public Pass {
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OptPass() : Pass("opt") { }
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virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
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{
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log_header("Executing OPT pass (performing simple optimizations).\n");
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log_push();
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extra_args(args, 1, design);
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log_header("Optimizing in-memory representation of design.\n");
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design->optimize();
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Pass::call(design, "opt_const");
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Pass::call(design, "opt_share -nomux");
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while (1) {
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OPT_DID_SOMETHING = false;
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Pass::call(design, "opt_muxtree");
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Pass::call(design, "opt_reduce");
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Pass::call(design, "opt_share");
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Pass::call(design, "opt_rmdff");
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Pass::call(design, "opt_rmunused");
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Pass::call(design, "opt_const");
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if (OPT_DID_SOMETHING == false)
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break;
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log_header("Rerunning OPT passes. (Maybe there is more to do..)\n");
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}
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log_header("Optimizing in-memory representation of design.\n");
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design->optimize();
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log_header("Finished OPT passes. (There is nothing left to do.)\n");
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log_pop();
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}
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} OptPass;
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