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author | Clifford Wolf <clifford@clifford.at> | 2017-08-20 12:31:50 +0200 |
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committer | Clifford Wolf <clifford@clifford.at> | 2017-08-20 12:31:50 +0200 |
commit | ca53fba44a8f49fc96e8f2913eb55b622ec0638a (patch) | |
tree | e883bef9306419e27fa25c47a5e1629e1310a5eb /passes/hierarchy/uniquify.cc | |
parent | d38a64b1cf361073a20a1e90c2fc6e56792c1237 (diff) | |
download | yosys-ca53fba44a8f49fc96e8f2913eb55b622ec0638a.tar.gz yosys-ca53fba44a8f49fc96e8f2913eb55b622ec0638a.tar.bz2 yosys-ca53fba44a8f49fc96e8f2913eb55b622ec0638a.zip |
Rename "singleton" pass to "uniquify"
Diffstat (limited to 'passes/hierarchy/uniquify.cc')
-rw-r--r-- | passes/hierarchy/uniquify.cc | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/passes/hierarchy/uniquify.cc b/passes/hierarchy/uniquify.cc new file mode 100644 index 000000000..1da0870f6 --- /dev/null +++ b/passes/hierarchy/uniquify.cc @@ -0,0 +1,102 @@ +/* + * yosys -- Yosys Open SYnthesis Suite + * + * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#include "kernel/yosys.h" + +USING_YOSYS_NAMESPACE +PRIVATE_NAMESPACE_BEGIN + +struct UniquifyPass : public Pass { + UniquifyPass() : Pass("uniquify", "create unique copies of modules") { } + virtual void help() + { + // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| + log("\n"); + log(" uniquify [selection]\n"); + log("\n"); + log("By default, a module that is instantiated by several other modules is only\n"); + log("kept once in the design. This preserves the original modularity of the design\n"); + log("and reduces the overall size of the design in memory. But it prevents certain\n"); + log("optimizations and other operations on the design. This pass creates unique\n"); + log("modules for all selected cells. The created modules are marked with the\n"); + log("'unique' attribute.\n"); + log("\n"); + log("This commands only operates on modules that by themself have the 'unique'\n"); + log("attribute set (the 'top' module is unique implicitly).\n"); + log("\n"); + } + virtual void execute(std::vector<std::string> args, RTLIL::Design *design) + { + log_header(design, "Executing UNIQUIFY pass (creating unique copies of modules).\n"); + + size_t argidx; + for (argidx = 1; argidx < args.size(); argidx++) + { + // if (args[argidx] == "-check") { + // flag_check = true; + // continue; + // } + } + extra_args(args, argidx, design); + + bool did_something = true; + int count = 0; + + while (did_something) + { + did_something = false; + + for (auto module : design->selected_modules()) + { + if (!module->get_bool_attribute("\\unique") && !module->get_bool_attribute("\\top")) + continue; + + for (auto cell : module->selected_cells()) + { + Module *tmod = design->module(cell->type); + IdString newname = module->name.str() + "." + log_id(cell->name); + + if (tmod == nullptr) + continue; + + if (tmod->get_bool_attribute("\\blackbox")) + continue; + + if (tmod->get_bool_attribute("\\unique") && newname == tmod->name) + continue; + + log("Creating module %s from %s.\n", log_id(newname), log_id(tmod)); + + auto smod = tmod->clone(); + smod->name = newname; + cell->type = newname; + smod->set_bool_attribute("\\unique"); + design->add(smod); + + did_something = true; + count++; + } + } + } + + log("Created %d unique modules.\n", count); + } +} UniquifyPass; + +PRIVATE_NAMESPACE_END |