mirror of
https://github.com/YosysHQ/yosys
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3aa4484a3c
o Not all derived methods were marked 'override', but it is a great feature of C++11 that we should make use of. o While at it: touched header files got a -*- c++ -*- for emacs to provide support for that language. o use YS_OVERRIDE for all override keywords (though we should probably use the plain keyword going forward now that C++11 is established)
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*
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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 "kernel/yosys.h"
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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struct UniquifyPass : public Pass {
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UniquifyPass() : Pass("uniquify", "create unique copies of modules") { }
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void help() YS_OVERRIDE
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{
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// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
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log("\n");
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log(" uniquify [selection]\n");
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log("\n");
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log("By default, a module that is instantiated by several other modules is only\n");
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log("kept once in the design. This preserves the original modularity of the design\n");
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log("and reduces the overall size of the design in memory. But it prevents certain\n");
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log("optimizations and other operations on the design. This pass creates unique\n");
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log("modules for all selected cells. The created modules are marked with the\n");
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log("'unique' attribute.\n");
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log("\n");
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log("This commands only operates on modules that by themself have the 'unique'\n");
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log("attribute set (the 'top' module is unique implicitly).\n");
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log("\n");
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}
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void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
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{
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log_header(design, "Executing UNIQUIFY pass (creating unique copies of modules).\n");
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size_t argidx;
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for (argidx = 1; argidx < args.size(); argidx++)
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{
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// if (args[argidx] == "-check") {
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// flag_check = true;
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// continue;
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// }
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}
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extra_args(args, argidx, design);
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bool did_something = true;
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int count = 0;
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while (did_something)
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{
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did_something = false;
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for (auto module : design->selected_modules())
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{
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if (!module->get_bool_attribute("\\unique") && !module->get_bool_attribute("\\top"))
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continue;
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for (auto cell : module->selected_cells())
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{
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Module *tmod = design->module(cell->type);
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IdString newname = module->name.str() + "." + log_id(cell->name);
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if (tmod == nullptr)
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continue;
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if (tmod->get_bool_attribute("\\blackbox"))
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continue;
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if (tmod->get_bool_attribute("\\unique") && newname == tmod->name)
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continue;
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log("Creating module %s from %s.\n", log_id(newname), log_id(tmod));
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auto smod = tmod->clone();
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smod->name = newname;
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cell->type = newname;
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smod->set_bool_attribute("\\unique");
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design->add(smod);
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did_something = true;
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count++;
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}
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}
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}
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log("Created %d unique modules.\n", count);
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}
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} UniquifyPass;
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PRIVATE_NAMESPACE_END
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