mirror of https://github.com/YosysHQ/yosys.git
abc9_techmap -> _map; called from abc9 script pass along with abc9_ops
This commit is contained in:
parent
ec25394808
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@ -8,7 +8,8 @@ OBJS += passes/techmap/libparse.o
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ifeq ($(ENABLE_ABC),1)
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OBJS += passes/techmap/abc.o
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OBJS += passes/techmap/abc9.o
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OBJS += passes/techmap/abc9_techmap.o
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OBJS += passes/techmap/abc9_map.o
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OBJS += passes/techmap/abc9_ops.o
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ifneq ($(ABCEXTERNAL),)
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passes/techmap/abc.o: CXXFLAGS += -DABCEXTERNAL='"$(ABCEXTERNAL)"'
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passes/techmap/abc9.o: CXXFLAGS += -DABCEXTERNAL='"$(ABCEXTERNAL)"'
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@ -0,0 +1,231 @@
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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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* (C) 2019 Eddie Hung <eddie@fpgeh.com>
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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/register.h"
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#include "kernel/celltypes.h"
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#include "kernel/rtlil.h"
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#include "kernel/log.h"
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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#define XC7_WIRE_DELAY 300 // Number with which ABC will map a 6-input gate
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// to one LUT6 (instead of a LUT5 + LUT2)
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struct Abc9Pass : public ScriptPass
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{
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Abc9Pass() : ScriptPass("abc9", "use ABC9 for technology mapping") { }
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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(" abc9 [options] [selection]\n");
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log("\n");
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log("This pass uses the ABC tool [1] for technology mapping of yosys's internal gate\n");
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log("library to a target architecture.\n");
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log("\n");
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log(" -exe <command>\n");
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#ifdef ABCEXTERNAL
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log(" use the specified command instead of \"" ABCEXTERNAL "\" to execute ABC.\n");
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#else
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log(" use the specified command instead of \"<yosys-bindir>/yosys-abc\" to execute ABC.\n");
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#endif
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log(" This can e.g. be used to call a specific version of ABC or a wrapper.\n");
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log("\n");
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log(" -script <file>\n");
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log(" use the specified ABC script file instead of the default script.\n");
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log("\n");
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log(" if <file> starts with a plus sign (+), then the rest of the filename\n");
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log(" string is interpreted as the command string to be passed to ABC. The\n");
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log(" leading plus sign is removed and all commas (,) in the string are\n");
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log(" replaced with blanks before the string is passed to ABC.\n");
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log("\n");
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log(" if no -script parameter is given, the following scripts are used:\n");
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log("\n");
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log(" for -lut/-luts (only one LUT size):\n");
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// FIXME
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//log("%s\n", fold_abc9_cmd(ABC_COMMAND_LUT /*"; lutpack {S}"*/).c_str());
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log("\n");
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log(" for -lut/-luts (different LUT sizes):\n");
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// FIXME
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//log("%s\n", fold_abc9_cmd(ABC_COMMAND_LUT).c_str());
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log("\n");
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log(" -fast\n");
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log(" use different default scripts that are slightly faster (at the cost\n");
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log(" of output quality):\n");
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log("\n");
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log(" for -lut/-luts:\n");
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// FIXME
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//log("%s\n", fold_abc9_cmd(ABC_FAST_COMMAND_LUT).c_str());
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log("\n");
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log(" -D <picoseconds>\n");
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log(" set delay target. the string {D} in the default scripts above is\n");
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log(" replaced by this option when used, and an empty string otherwise\n");
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log(" (indicating best possible delay).\n");
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// log(" This also replaces 'dretime' with 'dretime; retime -o {D}' in the\n");
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// log(" default scripts above.\n");
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log("\n");
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// log(" -S <num>\n");
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// log(" maximum number of LUT inputs shared.\n");
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// log(" (replaces {S} in the default scripts above, default: -S 1)\n");
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// log("\n");
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log(" -lut <width>\n");
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log(" generate netlist using luts of (max) the specified width.\n");
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log("\n");
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log(" -lut <w1>:<w2>\n");
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log(" generate netlist using luts of (max) the specified width <w2>. All\n");
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log(" luts with width <= <w1> have constant cost. for luts larger than <w1>\n");
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log(" the area cost doubles with each additional input bit. the delay cost\n");
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log(" is still constant for all lut widths.\n");
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log("\n");
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log(" -lut <file>\n");
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log(" pass this file with lut library to ABC.\n");
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log("\n");
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log(" -luts <cost1>,<cost2>,<cost3>,<sizeN>:<cost4-N>,..\n");
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log(" generate netlist using luts. Use the specified costs for luts with 1,\n");
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log(" 2, 3, .. inputs.\n");
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log("\n");
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// log(" -dff\n");
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// log(" also pass $_DFF_?_ and $_DFFE_??_ cells through ABC. modules with many\n");
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// log(" clock domains are automatically partitioned in clock domains and each\n");
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// log(" domain is passed through ABC independently.\n");
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// log("\n");
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// log(" -clk [!]<clock-signal-name>[,[!]<enable-signal-name>]\n");
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// log(" use only the specified clock domain. this is like -dff, but only FF\n");
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// log(" cells that belong to the specified clock domain are used.\n");
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// log("\n");
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// log(" -keepff\n");
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// log(" set the \"keep\" attribute on flip-flop output wires. (and thus preserve\n");
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// log(" them, for example for equivalence checking.)\n");
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// log("\n");
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log(" -nocleanup\n");
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log(" when this option is used, the temporary files created by this pass\n");
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log(" are not removed. this is useful for debugging.\n");
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log("\n");
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log(" -showtmp\n");
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log(" print the temp dir name in log. usually this is suppressed so that the\n");
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log(" command output is identical across runs.\n");
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log("\n");
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log(" -markgroups\n");
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log(" set a 'abcgroup' attribute on all objects created by ABC. The value of\n");
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log(" this attribute is a unique integer for each ABC process started. This\n");
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log(" is useful for debugging the partitioning of clock domains.\n");
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log("\n");
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log(" -box <file>\n");
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log(" pass this file with box library to ABC. Use with -lut.\n");
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log("\n");
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log("Note that this is a logic optimization pass within Yosys that is calling ABC\n");
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log("internally. This is not going to \"run ABC on your design\". It will instead run\n");
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log("ABC on logic snippets extracted from your design. You will not get any useful\n");
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log("output when passing an ABC script that writes a file. Instead write your full\n");
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log("design as BLIF file with write_blif and then load that into ABC externally if\n");
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log("you want to use ABC to convert your design into another format.\n");
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log("\n");
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log("[1] http://www.eecs.berkeley.edu/~alanmi/abc/\n");
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log("\n");
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help_script();
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log("\n");
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}
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std::stringstream map_cmd;
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bool cleanup;
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void clear_flags() YS_OVERRIDE
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{
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map_cmd.str("");
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map_cmd << "abc9_map";
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cleanup = true;
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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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std::string run_from, run_to;
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clear_flags();
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size_t argidx;
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for (argidx = 1; argidx < args.size(); argidx++) {
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std::string arg = args[argidx];
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if ((arg == "-exe" || arg == "-script" || arg == "-D" ||
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/* arg == "-S" || */ arg == "-lut" || arg == "-luts" ||
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arg == "-clk" || arg == "-box" || arg == "-W") &&
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argidx+1 < args.size()) {
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map_cmd << " " << arg << " " << args[++argidx];
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continue;
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}
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if (arg == "-fast" || /*arg == "-dff" ||*/ arg == "-keepff"
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/*|| arg == "-nocleanup"*/ || arg == "-showtmp" || arg == "-markgroups"
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|| arg == "-nomfs") {
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map_cmd << " " << arg;
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continue;
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}
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if (arg == "-nocleanup") {
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cleanup = false;
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continue;
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}
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break;
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}
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extra_args(args, argidx, design);
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log_header(design, "Executing ABC9 pass.\n");
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run_script(design, run_from, run_to);
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}
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void script() YS_OVERRIDE
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{
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auto selected_modules = active_design->selected_modules();
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active_design->selection_stack.emplace_back(false);
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for (auto mod : selected_modules) {
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log_push();
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active_design->selection().select(mod);
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std::string tempdir_name = "/tmp/yosys-abc-XXXXXX";
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if (!cleanup)
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tempdir_name[0] = tempdir_name[4] = '_';
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tempdir_name = make_temp_dir(tempdir_name);
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run("scc -set_attr abc9_scc_id {}");
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run("abc9_ops -break_scc");
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run("aigmap");
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run(stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str()),
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"write_xaiger -map <abc-temp-dir>/input.sym <abc-temp-dir>/input.xaig");
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run(stringf("%s -tempdir %s", map_cmd.str().c_str(), tempdir_name.c_str()),
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"abc9_map [options] -tempdir <abc-temp-dir>");
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run("abc9_ops -unbreak_scc");
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if (cleanup)
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{
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log("Removing temp directory.\n");
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remove_directory(tempdir_name);
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}
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active_design->selection().selected_modules.clear();
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log_pop();
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}
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active_design->selection_stack.pop_back();
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}
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} Abc9Pass;
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PRIVATE_NAMESPACE_END
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@ -76,58 +76,6 @@ inline std::string remap_name(RTLIL::IdString abc9_name)
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return stringf("$abc$%d$%s", map_autoidx, abc9_name.c_str()+1);
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}
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void handle_loops(RTLIL::Design *design)
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{
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Pass::call(design, "scc -set_attr abc9_scc_id {}");
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// For every unique SCC found, (arbitrarily) find the first
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// cell in the component, and select (and mark) all its output
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// wires
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pool<RTLIL::Const> ids_seen;
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for (auto cell : module->cells()) {
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auto it = cell->attributes.find(ID(abc9_scc_id));
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if (it != cell->attributes.end()) {
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auto r = ids_seen.insert(it->second);
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if (r.second) {
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for (auto &c : cell->connections_) {
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if (c.second.is_fully_const()) continue;
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if (cell->output(c.first)) {
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SigBit b = c.second.as_bit();
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Wire *w = b.wire;
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if (w->port_input) {
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// In this case, hopefully the loop break has been already created
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// Get the non-prefixed wire
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Wire *wo = module->wire(stringf("%s.abco", b.wire->name.c_str()));
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log_assert(wo != nullptr);
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log_assert(wo->port_output);
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log_assert(b.offset < GetSize(wo));
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c.second = RTLIL::SigBit(wo, b.offset);
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}
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else {
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// Create a new output/input loop break
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w->port_input = true;
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w = module->wire(stringf("%s.abco", w->name.c_str()));
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if (!w) {
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w = module->addWire(stringf("%s.abco", b.wire->name.c_str()), GetSize(b.wire));
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w->port_output = true;
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}
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else {
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log_assert(w->port_input);
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log_assert(b.offset < GetSize(w));
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}
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w->set_bool_attribute(ID(abc9_scc_break));
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c.second = RTLIL::SigBit(w, b.offset);
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}
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}
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}
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}
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cell->attributes.erase(it);
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}
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}
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module->fixup_ports();
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}
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std::string add_echos_to_abc9_cmd(std::string str)
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{
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std::string new_str, token;
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@ -254,10 +202,10 @@ struct abc9_output_filter
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};
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void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::string script_file, std::string exe_file,
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bool cleanup, vector<int> lut_costs, bool dff_mode, std::string clk_str,
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/*bool cleanup,*/ vector<int> lut_costs, bool dff_mode, std::string clk_str,
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bool /*keepff*/, std::string delay_target, std::string /*lutin_shared*/, bool fast_mode,
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bool show_tempdir, std::string box_file, std::string lut_file,
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std::string wire_delay, const dict<int,IdString> &box_lookup, bool nomfs
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std::string wire_delay, const dict<int,IdString> &box_lookup, bool nomfs, std::string tempdir_name
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)
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{
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module = current_module;
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@ -296,10 +244,6 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
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if (dff_mode && clk_sig.empty())
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log_cmd_error("Clock domain %s not found.\n", clk_str.c_str());
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std::string tempdir_name = "/tmp/yosys-abc-XXXXXX";
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if (!cleanup)
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tempdir_name[0] = tempdir_name[4] = '_';
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tempdir_name = make_temp_dir(tempdir_name);
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log_header(design, "Extracting gate netlist of module `%s' to `%s/input.xaig'..\n",
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module->name.c_str(), replace_tempdir(tempdir_name, tempdir_name, show_tempdir).c_str());
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@ -383,33 +327,10 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
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}
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}
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bool count_output = false;
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for (auto port_name : module->ports) {
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RTLIL::Wire *port_wire = module->wire(port_name);
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log_assert(port_wire);
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if (port_wire->port_output) {
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count_output = true;
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break;
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}
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}
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log_push();
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if (count_output)
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//if (count_output)
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{
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design->selection_stack.emplace_back(false);
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RTLIL::Selection& sel = design->selection_stack.back();
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sel.select(module);
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handle_loops(design);
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Pass::call(design, "aigmap");
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//log("Extracted %d gates and %d wires to a netlist network with %d inputs and %d outputs.\n",
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// count_gates, GetSize(signal_list), count_input, count_output);
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Pass::call(design, stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str()));
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std::string buffer;
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std::ifstream ifs;
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#if 0
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@ -428,8 +349,6 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
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design->remove(design->module(ID($__abc9__)));
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#endif
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design->selection_stack.pop_back();
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log_header(design, "Executing ABC9_MAP.\n");
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if (!lut_costs.empty()) {
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@ -773,41 +692,16 @@ clone_lut:
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}
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}
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// Now 'unexpose' those wires by undoing
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// the expose operation -- remove them from PO/PI
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// and re-connecting them back together
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for (auto wire : module->wires()) {
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auto it = wire->attributes.find(ID(abc9_scc_break));
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if (it != wire->attributes.end()) {
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wire->attributes.erase(it);
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log_assert(wire->port_output);
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wire->port_output = false;
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std::string name = wire->name.str();
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RTLIL::Wire *i_wire = module->wire(name.substr(0, GetSize(name) - 5));
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log_assert(i_wire);
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log_assert(i_wire->port_input);
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i_wire->port_input = false;
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module->connect(i_wire, wire);
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}
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}
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module->fixup_ports();
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//log("ABC RESULTS: internal signals: %8d\n", int(signal_list.size()) - in_wires - out_wires);
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log("ABC RESULTS: input signals: %8d\n", in_wires);
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log("ABC RESULTS: output signals: %8d\n", out_wires);
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design->remove(mapped_mod);
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}
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else
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{
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log("Don't call ABC as there is nothing to map.\n");
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}
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if (cleanup)
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{
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log("Removing temp directory.\n");
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remove_directory(tempdir_name);
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}
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//else
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//{
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// log("Don't call ABC as there is nothing to map.\n");
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//}
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log_pop();
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}
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@ -894,10 +788,10 @@ struct Abc9TechmapPass : public Pass {
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// log(" set the \"keep\" attribute on flip-flop output wires. (and thus preserve\n");
|
||||
// log(" them, for example for equivalence checking.)\n");
|
||||
// log("\n");
|
||||
log(" -nocleanup\n");
|
||||
log(" when this option is used, the temporary files created by this pass\n");
|
||||
log(" are not removed. this is useful for debugging.\n");
|
||||
log("\n");
|
||||
// log(" -nocleanup\n");
|
||||
// log(" when this option is used, the temporary files created by this pass\n");
|
||||
// log(" are not removed. this is useful for debugging.\n");
|
||||
// log("\n");
|
||||
log(" -showtmp\n");
|
||||
log(" print the temp dir name in log. usually this is suppressed so that the\n");
|
||||
log(" command output is identical across runs.\n");
|
||||
|
@ -910,6 +804,9 @@ struct Abc9TechmapPass : public Pass {
|
|||
log(" -box <file>\n");
|
||||
log(" pass this file with box library to ABC. Use with -lut.\n");
|
||||
log("\n");
|
||||
log(" -tempdir <dir>\n");
|
||||
log(" use this as the temp dir.\n");
|
||||
log("\n");
|
||||
log("Note that this is a logic optimization pass within Yosys that is calling ABC\n");
|
||||
log("internally. This is not going to \"run ABC on your design\". It will instead run\n");
|
||||
log("ABC on logic snippets extracted from your design. You will not get any useful\n");
|
||||
|
@ -922,7 +819,7 @@ struct Abc9TechmapPass : public Pass {
|
|||
}
|
||||
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
|
||||
{
|
||||
log_header(design, "Executing ABC9 pass (technology mapping using ABC9).\n");
|
||||
log_header(design, "Executing ABC9_MAP pass (technology mapping using ABC9).\n");
|
||||
log_push();
|
||||
|
||||
assign_map.clear();
|
||||
|
@ -934,7 +831,8 @@ struct Abc9TechmapPass : public Pass {
|
|||
#endif
|
||||
std::string script_file, clk_str, box_file, lut_file;
|
||||
std::string delay_target, lutin_shared = "-S 1", wire_delay;
|
||||
bool fast_mode = false, dff_mode = false, keepff = false, cleanup = true;
|
||||
std::string tempdir_name;
|
||||
bool fast_mode = false, dff_mode = false, keepff = false /*, cleanup = true*/;
|
||||
bool show_tempdir = false;
|
||||
bool nomfs = false;
|
||||
vector<int> lut_costs;
|
||||
|
@ -1038,10 +936,10 @@ struct Abc9TechmapPass : public Pass {
|
|||
// keepff = true;
|
||||
// continue;
|
||||
//}
|
||||
if (arg == "-nocleanup") {
|
||||
cleanup = false;
|
||||
continue;
|
||||
}
|
||||
//if (arg == "-nocleanup") {
|
||||
// cleanup = false;
|
||||
// continue;
|
||||
//}
|
||||
if (arg == "-showtmp") {
|
||||
show_tempdir = true;
|
||||
continue;
|
||||
|
@ -1062,17 +960,24 @@ struct Abc9TechmapPass : public Pass {
|
|||
nomfs = true;
|
||||
continue;
|
||||
}
|
||||
if (arg == "-tempdir" && argidx+1 < args.size()) {
|
||||
tempdir_name = args[++argidx];
|
||||
continue;
|
||||
}
|
||||
break;
|
||||
}
|
||||
extra_args(args, argidx, design);
|
||||
|
||||
// ABC expects a box file for XAIG
|
||||
if (box_file.empty())
|
||||
box_file = "+/dummy.box";
|
||||
box_file = "+/dummy.box";
|
||||
|
||||
rewrite_filename(box_file);
|
||||
if (!box_file.empty() && !is_absolute_path(box_file) && box_file[0] != '+')
|
||||
box_file = std::string(pwd) + "/" + box_file;
|
||||
box_file = std::string(pwd) + "/" + box_file;
|
||||
|
||||
if (tempdir_name.empty())
|
||||
log_cmd_error("abc9_map '-tempdir' option is mandatory.\n");
|
||||
|
||||
dict<int,IdString> box_lookup;
|
||||
for (auto m : design->modules()) {
|
||||
|
@ -1148,9 +1053,9 @@ struct Abc9TechmapPass : public Pass {
|
|||
assign_map.set(mod);
|
||||
|
||||
if (!dff_mode || !clk_str.empty()) {
|
||||
abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, dff_mode, clk_str, keepff,
|
||||
abc9_module(design, mod, script_file, exe_file, /*cleanup,*/ lut_costs, dff_mode, clk_str, keepff,
|
||||
delay_target, lutin_shared, fast_mode, show_tempdir,
|
||||
box_file, lut_file, wire_delay, box_lookup, nomfs);
|
||||
box_file, lut_file, wire_delay, box_lookup, nomfs, tempdir_name);
|
||||
continue;
|
||||
}
|
||||
|
||||
|
@ -1294,9 +1199,9 @@ struct Abc9TechmapPass : public Pass {
|
|||
clk_sig = assign_map(std::get<1>(it.first));
|
||||
en_polarity = std::get<2>(it.first);
|
||||
en_sig = assign_map(std::get<3>(it.first));
|
||||
abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, !clk_sig.empty(), "$",
|
||||
abc9_module(design, mod, script_file, exe_file, /*cleanup,*/ lut_costs, !clk_sig.empty(), "$",
|
||||
keepff, delay_target, lutin_shared, fast_mode, show_tempdir,
|
||||
box_file, lut_file, wire_delay, box_lookup, nomfs);
|
||||
box_file, lut_file, wire_delay, box_lookup, nomfs, tempdir_name);
|
||||
assign_map.set(mod);
|
||||
}
|
||||
}
|
|
@ -0,0 +1,139 @@
|
|||
/*
|
||||
* yosys -- Yosys Open SYnthesis Suite
|
||||
*
|
||||
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
|
||||
* 2019 Eddie Hung <eddie@fpgeh.com>
|
||||
*
|
||||
* 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/register.h"
|
||||
|
||||
USING_YOSYS_NAMESPACE
|
||||
PRIVATE_NAMESPACE_BEGIN
|
||||
|
||||
void break_scc(RTLIL::Module *module)
|
||||
{
|
||||
// For every unique SCC found, (arbitrarily) find the first
|
||||
// cell in the component, and convert all wires driven by
|
||||
// its output ports into a new PO, and drive its previous
|
||||
// sinks with a new PI
|
||||
pool<RTLIL::Const> ids_seen;
|
||||
for (auto cell : module->selected_cells()) {
|
||||
auto it = cell->attributes.find(ID(abc9_scc_id));
|
||||
if (it == cell->attributes.end())
|
||||
continue;
|
||||
auto r = ids_seen.insert(it->second);
|
||||
cell->attributes.erase(it);
|
||||
if (!r.second)
|
||||
continue;
|
||||
for (auto &c : cell->connections_) {
|
||||
if (c.second.is_fully_const()) continue;
|
||||
if (cell->output(c.first)) {
|
||||
SigBit b = c.second.as_bit();
|
||||
Wire *w = b.wire;
|
||||
if (w->port_input) {
|
||||
// In this case, hopefully the loop break has been already created
|
||||
// Get the non-prefixed wire
|
||||
Wire *wo = module->wire(stringf("%s.abco", b.wire->name.c_str()));
|
||||
log_assert(wo != nullptr);
|
||||
log_assert(wo->port_output);
|
||||
log_assert(b.offset < GetSize(wo));
|
||||
c.second = RTLIL::SigBit(wo, b.offset);
|
||||
}
|
||||
else {
|
||||
// Create a new output/input loop break
|
||||
w->port_input = true;
|
||||
w = module->wire(stringf("%s.abco", w->name.c_str()));
|
||||
if (!w) {
|
||||
w = module->addWire(stringf("%s.abco", b.wire->name.c_str()), GetSize(b.wire));
|
||||
w->port_output = true;
|
||||
}
|
||||
else {
|
||||
log_assert(w->port_input);
|
||||
log_assert(b.offset < GetSize(w));
|
||||
}
|
||||
w->set_bool_attribute(ID(abc9_scc_break));
|
||||
c.second = RTLIL::SigBit(w, b.offset);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
module->fixup_ports();
|
||||
}
|
||||
|
||||
void unbreak_scc(RTLIL::Module *module) {
|
||||
// Now 'unexpose' those wires by undoing
|
||||
// the expose operation -- remove them from PO/PI
|
||||
// and re-connecting them back together
|
||||
for (auto wire : module->wires()) {
|
||||
auto it = wire->attributes.find(ID(abc9_scc_break));
|
||||
if (it != wire->attributes.end()) {
|
||||
wire->attributes.erase(it);
|
||||
log_assert(wire->port_output);
|
||||
wire->port_output = false;
|
||||
std::string name = wire->name.str();
|
||||
RTLIL::Wire *i_wire = module->wire(name.substr(0, GetSize(name) - 5));
|
||||
log_assert(i_wire);
|
||||
log_assert(i_wire->port_input);
|
||||
i_wire->port_input = false;
|
||||
module->connect(i_wire, wire);
|
||||
}
|
||||
}
|
||||
module->fixup_ports();
|
||||
}
|
||||
|
||||
struct Abc9PrepPass : public Pass {
|
||||
Abc9PrepPass() : Pass("abc9_ops", "helper functions for ABC9") { }
|
||||
void help() YS_OVERRIDE
|
||||
{
|
||||
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
|
||||
log("\n");
|
||||
log(" abc9_ops [options] [selection]\n");
|
||||
log("\n");
|
||||
}
|
||||
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
|
||||
{
|
||||
log_header(design, "Executing ABC9_OPS pass (helper functions for ABC9).\n");
|
||||
log_push();
|
||||
|
||||
bool break_scc_mode = false;
|
||||
bool unbreak_scc_mode = false;
|
||||
|
||||
size_t argidx;
|
||||
for (argidx = 1; argidx < args.size(); argidx++) {
|
||||
std::string arg = args[argidx];
|
||||
if (arg == "-break_scc") {
|
||||
break_scc_mode = true;
|
||||
continue;
|
||||
}
|
||||
if (arg == "-unbreak_scc") {
|
||||
unbreak_scc_mode = true;
|
||||
continue;
|
||||
}
|
||||
break;
|
||||
}
|
||||
extra_args(args, argidx, design);
|
||||
|
||||
for (auto mod : design->selected_modules()) {
|
||||
if (break_scc_mode)
|
||||
break_scc(mod);
|
||||
if (unbreak_scc_mode)
|
||||
unbreak_scc(mod);
|
||||
}
|
||||
}
|
||||
} Abc9PrepPass;
|
||||
|
||||
PRIVATE_NAMESPACE_END
|
Loading…
Reference in New Issue