ifeq ($(ENABLE_ABC),1)
OBJS += passes/techmap/abc.o
OBJS += passes/techmap/abc9.o
-OBJS += passes/techmap/abc9_map.o
+OBJS += passes/techmap/abc9_exe.o
OBJS += passes/techmap/abc9_ops.o
ifneq ($(ABCEXTERNAL),)
passes/techmap/abc.o: CXXFLAGS += -DABCEXTERNAL='"$(ABCEXTERNAL)"'
log("\n");
}
- std::stringstream map_cmd;
+ std::stringstream exe_cmd;
bool dff_mode, cleanup;
void clear_flags() YS_OVERRIDE
{
- map_cmd.str("");
- map_cmd << "abc9_map";
+ exe_cmd.str("");
+ exe_cmd << "abc9_exe";
dff_mode = false;
cleanup = true;
}
/* arg == "-S" || */ arg == "-lut" || arg == "-luts" ||
arg == "-box" || arg == "-W") &&
argidx+1 < args.size()) {
- map_cmd << " " << arg << " " << args[++argidx];
+ exe_cmd << " " << arg << " " << args[++argidx];
continue;
}
if (arg == "-fast" || /* arg == "-dff" || */
/* arg == "-nocleanup" || */ arg == "-showtmp" ||
arg == "-nomfs") {
- map_cmd << " " << arg;
+ exe_cmd << " " << arg;
continue;
}
if (arg == "-dff") {
tempdir_name = make_temp_dir(tempdir_name);
run(stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str()),
- "write_xaiger -map <abc-temp-dir>/input.sym <abc-temp-dir>/input.xaig");
- run(stringf("%s -tempdir %s", map_cmd.str().c_str(), tempdir_name.c_str()),
- "abc9_map [options] -tempdir <abc-temp-dir>");
+ "write_xaiger -map <abc-temp-dir>/input.sym <abc-temp-dir>/input.xaig");
+ run(stringf("%s -cwd %s", exe_cmd.str().c_str(), tempdir_name.c_str()),
+ "abc9_exe [options] -cwd <abc-temp-dir>");
+
+ run(stringf("read_aiger -xaiger -wideports -module_name %s$abc9 -map %s/input.sym %s/output.aig", log_id(mod->name), tempdir_name.c_str(), tempdir_name.c_str()),
+ "read_aiger -xaiger -wideports -module_name <module-name>$abc9 -map <abc-temp-dir>/input.sym <abc-temp-dir>/output.aig");
+ run("abc9_ops -reintegrate");
if (cleanup)
{
--- /dev/null
+/*
+ * 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.
+ *
+ */
+
+// [[CITE]] ABC
+// Berkeley Logic Synthesis and Verification Group, ABC: A System for Sequential Synthesis and Verification
+// http://www.eecs.berkeley.edu/~alanmi/abc/
+
+#if 0
+// Based on &flow3 - better QoR but more experimental
+#define ABC_COMMAND_LUT "&st; &ps -l; &sweep -v; &scorr; " \
+ "&st; &if {W}; &save; &st; &syn2; &if {W} -v; &save; &load; "\
+ "&st; &if -g -K 6; &dch -f; &if {W} -v; &save; &load; "\
+ "&st; &if -g -K 6; &synch2; &if {W} -v; &save; &load; "\
+ "&mfs; &ps -l"
+#else
+#define ABC_COMMAND_LUT "&st; &scorr; &sweep; &dc2; &st; &dch -f; &ps; &if {W} {D} -v; &mfs; &ps -l"
+#endif
+
+
+#define ABC_FAST_COMMAND_LUT "&st; &if {W} {D}"
+
+#include "kernel/register.h"
+#include "kernel/log.h"
+
+#ifndef _WIN32
+# include <unistd.h>
+# include <dirent.h>
+#endif
+
+#ifdef YOSYS_LINK_ABC
+extern "C" int Abc_RealMain(int argc, char *argv[]);
+#endif
+
+USING_YOSYS_NAMESPACE
+PRIVATE_NAMESPACE_BEGIN
+
+std::string add_echos_to_abc9_cmd(std::string str)
+{
+ std::string new_str, token;
+ for (size_t i = 0; i < str.size(); i++) {
+ token += str[i];
+ if (str[i] == ';') {
+ while (i+1 < str.size() && str[i+1] == ' ')
+ i++;
+ new_str += "echo + " + token + " " + token + " ";
+ token.clear();
+ }
+ }
+
+ if (!token.empty()) {
+ if (!new_str.empty())
+ new_str += "echo + " + token + "; ";
+ new_str += token;
+ }
+
+ return new_str;
+}
+
+std::string fold_abc9_cmd(std::string str)
+{
+ std::string token, new_str = " ";
+ int char_counter = 10;
+
+ for (size_t i = 0; i <= str.size(); i++) {
+ if (i < str.size())
+ token += str[i];
+ if (i == str.size() || str[i] == ';') {
+ if (char_counter + token.size() > 75)
+ new_str += "\n ", char_counter = 14;
+ new_str += token, char_counter += token.size();
+ token.clear();
+ }
+ }
+
+ return new_str;
+}
+
+std::string replace_tempdir(std::string text, std::string tempdir_name, bool show_tempdir)
+{
+ if (show_tempdir)
+ return text;
+
+ while (1) {
+ size_t pos = text.find(tempdir_name);
+ if (pos == std::string::npos)
+ break;
+ text = text.substr(0, pos) + "<abc-temp-dir>" + text.substr(pos + GetSize(tempdir_name));
+ }
+
+ std::string selfdir_name = proc_self_dirname();
+ if (selfdir_name != "/") {
+ while (1) {
+ size_t pos = text.find(selfdir_name);
+ if (pos == std::string::npos)
+ break;
+ text = text.substr(0, pos) + "<yosys-exe-dir>/" + text.substr(pos + GetSize(selfdir_name));
+ }
+ }
+
+ return text;
+}
+
+struct abc9_output_filter
+{
+ bool got_cr;
+ int escape_seq_state;
+ std::string linebuf;
+ std::string tempdir_name;
+ bool show_tempdir;
+
+ abc9_output_filter(std::string tempdir_name, bool show_tempdir) : tempdir_name(tempdir_name), show_tempdir(show_tempdir)
+ {
+ got_cr = false;
+ escape_seq_state = 0;
+ }
+
+ void next_char(char ch)
+ {
+ if (escape_seq_state == 0 && ch == '\033') {
+ escape_seq_state = 1;
+ return;
+ }
+ if (escape_seq_state == 1) {
+ escape_seq_state = ch == '[' ? 2 : 0;
+ return;
+ }
+ if (escape_seq_state == 2) {
+ if ((ch < '0' || '9' < ch) && ch != ';')
+ escape_seq_state = 0;
+ return;
+ }
+ escape_seq_state = 0;
+ if (ch == '\r') {
+ got_cr = true;
+ return;
+ }
+ if (ch == '\n') {
+ log("ABC: %s\n", replace_tempdir(linebuf, tempdir_name, show_tempdir).c_str());
+ got_cr = false, linebuf.clear();
+ return;
+ }
+ if (got_cr)
+ got_cr = false, linebuf.clear();
+ linebuf += ch;
+ }
+
+ void next_line(const std::string &line)
+ {
+ //int pi, po;
+ //if (sscanf(line.c_str(), "Start-point = pi%d. End-point = po%d.", &pi, &po) == 2) {
+ // log("ABC: Start-point = pi%d (%s). End-point = po%d (%s).\n",
+ // pi, pi_map.count(pi) ? pi_map.at(pi).c_str() : "???",
+ // po, po_map.count(po) ? po_map.at(po).c_str() : "???");
+ // return;
+ //}
+
+ for (char ch : line)
+ next_char(ch);
+ }
+};
+
+void abc9_module(RTLIL::Design *design, std::string script_file, std::string exe_file,
+ vector<int> lut_costs, std::string delay_target, std::string /*lutin_shared*/, bool fast_mode,
+ bool show_tempdir, std::string box_file, std::string lut_file,
+ std::string wire_delay, bool nomfs, std::string tempdir_name
+)
+{
+ //FIXME:
+ //log_header(design, "Extracting gate netlist of module `%s' to `%s/input.xaig'..\n",
+ // module->name.c_str(), replace_tempdir(tempdir_name, tempdir_name, show_tempdir).c_str());
+
+ std::string abc9_script;
+
+ if (!lut_costs.empty()) {
+ abc9_script += stringf("read_lut %s/lutdefs.txt; ", tempdir_name.c_str());
+ if (!box_file.empty())
+ abc9_script += stringf("read_box %s; ", box_file.c_str());
+ }
+ else
+ if (!lut_file.empty()) {
+ abc9_script += stringf("read_lut %s; ", lut_file.c_str());
+ if (!box_file.empty())
+ abc9_script += stringf("read_box %s; ", box_file.c_str());
+ }
+ else
+ log_abort();
+
+ abc9_script += stringf("&read %s/input.xaig; &ps; ", tempdir_name.c_str());
+
+ if (!script_file.empty()) {
+ if (script_file[0] == '+') {
+ for (size_t i = 1; i < script_file.size(); i++)
+ if (script_file[i] == '\'')
+ abc9_script += "'\\''";
+ else if (script_file[i] == ',')
+ abc9_script += " ";
+ else
+ abc9_script += script_file[i];
+ } else
+ abc9_script += stringf("source %s", script_file.c_str());
+ } else if (!lut_costs.empty() || !lut_file.empty()) {
+ abc9_script += fast_mode ? ABC_FAST_COMMAND_LUT : ABC_COMMAND_LUT;
+ } else
+ log_abort();
+
+ for (size_t pos = abc9_script.find("{D}"); pos != std::string::npos; pos = abc9_script.find("{D}", pos))
+ abc9_script = abc9_script.substr(0, pos) + delay_target + abc9_script.substr(pos+3);
+
+ //for (size_t pos = abc9_script.find("{S}"); pos != std::string::npos; pos = abc9_script.find("{S}", pos))
+ // abc9_script = abc9_script.substr(0, pos) + lutin_shared + abc9_script.substr(pos+3);
+
+ for (size_t pos = abc9_script.find("{W}"); pos != std::string::npos; pos = abc9_script.find("{W}", pos))
+ abc9_script = abc9_script.substr(0, pos) + wire_delay + abc9_script.substr(pos+3);
+
+ if (nomfs)
+ for (size_t pos = abc9_script.find("&mfs"); pos != std::string::npos; pos = abc9_script.find("&mfs", pos))
+ abc9_script = abc9_script.erase(pos, strlen("&mfs"));
+
+ abc9_script += stringf("; &write -n %s/output.aig", tempdir_name.c_str());
+ abc9_script = add_echos_to_abc9_cmd(abc9_script);
+
+ for (size_t i = 0; i+1 < abc9_script.size(); i++)
+ if (abc9_script[i] == ';' && abc9_script[i+1] == ' ')
+ abc9_script[i+1] = '\n';
+
+ FILE *f = fopen(stringf("%s/abc.script", tempdir_name.c_str()).c_str(), "wt");
+ fprintf(f, "%s\n", abc9_script.c_str());
+ fclose(f);
+
+ int count_outputs = design->scratchpad_get_int("write_xaiger.num_outputs");
+ log("Extracted %d AND gates and %d wires to a netlist network with %d inputs and %d outputs.\n",
+ design->scratchpad_get_int("write_xaiger.num_ands"),
+ design->scratchpad_get_int("write_xaiger.num_wires"),
+ design->scratchpad_get_int("write_xaiger.num_inputs"),
+ count_outputs);
+
+ if (count_outputs > 0) {
+ std::string buffer;
+
+ log_header(design, "Executing ABC9.\n");
+
+ if (!lut_costs.empty()) {
+ buffer = stringf("%s/lutdefs.txt", tempdir_name.c_str());
+ f = fopen(buffer.c_str(), "wt");
+ if (f == NULL)
+ log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
+ for (int i = 0; i < GetSize(lut_costs); i++)
+ fprintf(f, "%d %d.00 1.00\n", i+1, lut_costs.at(i));
+ fclose(f);
+ }
+
+ buffer = stringf("%s -s -f %s/abc.script 2>&1", exe_file.c_str(), tempdir_name.c_str());
+ log("Running ABC command: %s\n", replace_tempdir(buffer, tempdir_name, show_tempdir).c_str());
+
+#ifndef YOSYS_LINK_ABC
+ abc9_output_filter filt(tempdir_name, show_tempdir);
+ int ret = run_command(buffer, std::bind(&abc9_output_filter::next_line, filt, std::placeholders::_1));
+#else
+ // These needs to be mutable, supposedly due to getopt
+ char *abc9_argv[5];
+ string tmp_script_name = stringf("%s/abc.script", tempdir_name.c_str());
+ abc9_argv[0] = strdup(exe_file.c_str());
+ abc9_argv[1] = strdup("-s");
+ abc9_argv[2] = strdup("-f");
+ abc9_argv[3] = strdup(tmp_script_name.c_str());
+ abc9_argv[4] = 0;
+ int ret = Abc_RealMain(4, abc9_argv);
+ free(abc9_argv[0]);
+ free(abc9_argv[1]);
+ free(abc9_argv[2]);
+ free(abc9_argv[3]);
+#endif
+ if (ret != 0)
+ log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
+ }
+ else
+ {
+ log("Don't call ABC as there is nothing to map.\n");
+ }
+}
+
+struct Abc9ExePass : public Pass {
+ Abc9ExePass() : Pass("abc9_exe", "use ABC9 for technology mapping") { }
+ void help() YS_OVERRIDE
+ {
+ // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+ log("\n");
+ log(" abc9_exe [options] [selection]\n");
+ log("\n");
+ log("This pass uses the ABC tool [1] for technology mapping of yosys's internal gate\n");
+ log("library to a target architecture.\n");
+ log("\n");
+ log(" -exe <command>\n");
+#ifdef ABCEXTERNAL
+ log(" use the specified command instead of \"" ABCEXTERNAL "\" to execute ABC.\n");
+#else
+ log(" use the specified command instead of \"<yosys-bindir>/yosys-abc\" to execute ABC.\n");
+#endif
+ log(" This can e.g. be used to call a specific version of ABC or a wrapper.\n");
+ log("\n");
+ log(" -script <file>\n");
+ log(" use the specified ABC script file instead of the default script.\n");
+ log("\n");
+ log(" if <file> starts with a plus sign (+), then the rest of the filename\n");
+ log(" string is interpreted as the command string to be passed to ABC. The\n");
+ log(" leading plus sign is removed and all commas (,) in the string are\n");
+ log(" replaced with blanks before the string is passed to ABC.\n");
+ log("\n");
+ log(" if no -script parameter is given, the following scripts are used:\n");
+ log("\n");
+ log(" for -lut/-luts (only one LUT size):\n");
+ log("%s\n", fold_abc9_cmd(ABC_COMMAND_LUT /*"; lutpack {S}"*/).c_str());
+ log("\n");
+ log(" for -lut/-luts (different LUT sizes):\n");
+ log("%s\n", fold_abc9_cmd(ABC_COMMAND_LUT).c_str());
+ log("\n");
+ log(" -fast\n");
+ log(" use different default scripts that are slightly faster (at the cost\n");
+ log(" of output quality):\n");
+ log("\n");
+ log(" for -lut/-luts:\n");
+ log("%s\n", fold_abc9_cmd(ABC_FAST_COMMAND_LUT).c_str());
+ log("\n");
+ log(" -D <picoseconds>\n");
+ log(" set delay target. the string {D} in the default scripts above is\n");
+ log(" replaced by this option when used, and an empty string otherwise\n");
+ log(" (indicating best possible delay).\n");
+ log("\n");
+// log(" -S <num>\n");
+// log(" maximum number of LUT inputs shared.\n");
+// log(" (replaces {S} in the default scripts above, default: -S 1)\n");
+// log("\n");
+ log(" -lut <width>\n");
+ log(" generate netlist using luts of (max) the specified width.\n");
+ log("\n");
+ log(" -lut <w1>:<w2>\n");
+ log(" generate netlist using luts of (max) the specified width <w2>. All\n");
+ log(" luts with width <= <w1> have constant cost. for luts larger than <w1>\n");
+ log(" the area cost doubles with each additional input bit. the delay cost\n");
+ log(" is still constant for all lut widths.\n");
+ log("\n");
+ log(" -lut <file>\n");
+ log(" pass this file with lut library to ABC.\n");
+ log("\n");
+ log(" -luts <cost1>,<cost2>,<cost3>,<sizeN>:<cost4-N>,..\n");
+ log(" generate netlist using luts. Use the specified costs for luts with 1,\n");
+ log(" 2, 3, .. inputs.\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");
+ log("\n");
+ log(" -box <file>\n");
+ log(" pass this file with box library to ABC. Use with -lut.\n");
+ log("\n");
+ log(" -cwd <dir>\n");
+ log(" use this as the current working directory, inside which the 'input.xaig'\n");
+ log(" file is expected. temporary files will be created in this directory, and\n");
+ log(" the mapped result will be written to 'output.aig'.\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");
+ log("output when passing an ABC script that writes a file. Instead write your full\n");
+ log("design as BLIF file with write_blif and then load that into ABC externally if\n");
+ log("you want to use ABC to convert your design into another format.\n");
+ log("\n");
+ log("[1] http://www.eecs.berkeley.edu/~alanmi/abc/\n");
+ log("\n");
+ }
+ void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
+ {
+ log_header(design, "Executing ABC9_MAP pass (technology mapping using ABC9).\n");
+
+#ifdef ABCEXTERNAL
+ std::string exe_file = ABCEXTERNAL;
+#else
+ std::string exe_file = proc_self_dirname() + "yosys-abc";
+#endif
+ std::string script_file, clk_str, box_file, lut_file;
+ std::string delay_target, lutin_shared = "-S 1", wire_delay;
+ std::string tempdir_name;
+ bool fast_mode = false;
+ bool show_tempdir = false;
+ bool nomfs = false;
+ vector<int> lut_costs;
+
+#if 0
+ cleanup = false;
+ show_tempdir = true;
+#endif
+
+#ifdef _WIN32
+#ifndef ABCEXTERNAL
+ if (!check_file_exists(exe_file + ".exe") && check_file_exists(proc_self_dirname() + "..\\yosys-abc.exe"))
+ exe_file = proc_self_dirname() + "..\\yosys-abc";
+#endif
+#endif
+
+ std::string lut_arg, luts_arg;
+ exe_file = design->scratchpad_get_string("abc9.exe", exe_file /* inherit default value if not set */);
+ script_file = design->scratchpad_get_string("abc9.script", script_file);
+ if (design->scratchpad.count("abc9.D")) {
+ delay_target = "-D " + design->scratchpad_get_string("abc9.D");
+ }
+ lut_arg = design->scratchpad_get_string("abc9.lut", lut_arg);
+ luts_arg = design->scratchpad_get_string("abc9.luts", luts_arg);
+ fast_mode = design->scratchpad_get_bool("abc9.fast", fast_mode);
+ show_tempdir = design->scratchpad_get_bool("abc9.showtmp", show_tempdir);
+ box_file = design->scratchpad_get_string("abc9.box", box_file);
+ if (design->scratchpad.count("abc9.W")) {
+ wire_delay = "-W " + design->scratchpad_get_string("abc9.W");
+ }
+ nomfs = design->scratchpad_get_bool("abc9.nomfs", nomfs);
+
+ size_t argidx;
+ char pwd [PATH_MAX];
+ if (!getcwd(pwd, sizeof(pwd))) {
+ log_cmd_error("getcwd failed: %s\n", strerror(errno));
+ log_abort();
+ }
+ for (argidx = 1; argidx < args.size(); argidx++) {
+ std::string arg = args[argidx];
+ if (arg == "-exe" && argidx+1 < args.size()) {
+ exe_file = args[++argidx];
+ continue;
+ }
+ if (arg == "-script" && argidx+1 < args.size()) {
+ script_file = args[++argidx];
+ continue;
+ }
+ if (arg == "-D" && argidx+1 < args.size()) {
+ delay_target = "-D " + args[++argidx];
+ continue;
+ }
+ //if (arg == "-S" && argidx+1 < args.size()) {
+ // lutin_shared = "-S " + args[++argidx];
+ // continue;
+ //}
+ if (arg == "-lut" && argidx+1 < args.size()) {
+ lut_arg = args[++argidx];
+ continue;
+ }
+ if (arg == "-luts" && argidx+1 < args.size()) {
+ lut_arg = args[++argidx];
+ continue;
+ }
+ if (arg == "-fast") {
+ fast_mode = true;
+ continue;
+ }
+ if (arg == "-showtmp") {
+ show_tempdir = true;
+ continue;
+ }
+ if (arg == "-box" && argidx+1 < args.size()) {
+ box_file = args[++argidx];
+ continue;
+ }
+ if (arg == "-W" && argidx+1 < args.size()) {
+ wire_delay = "-W " + args[++argidx];
+ continue;
+ }
+ if (arg == "-nomfs") {
+ nomfs = true;
+ continue;
+ }
+ if (arg == "-cwd" && argidx+1 < args.size()) {
+ tempdir_name = args[++argidx];
+ continue;
+ }
+ break;
+ }
+ extra_args(args, argidx, design);
+
+ rewrite_filename(script_file);
+ if (!script_file.empty() && !is_absolute_path(script_file) && script_file[0] != '+')
+ script_file = std::string(pwd) + "/" + script_file;
+
+ // handle -lut / -luts args
+ if (!lut_arg.empty()) {
+ string arg = lut_arg;
+ if (arg.find_first_not_of("0123456789:") == std::string::npos) {
+ size_t pos = arg.find_first_of(':');
+ int lut_mode = 0, lut_mode2 = 0;
+ if (pos != string::npos) {
+ lut_mode = atoi(arg.substr(0, pos).c_str());
+ lut_mode2 = atoi(arg.substr(pos+1).c_str());
+ } else {
+ lut_mode = atoi(arg.c_str());
+ lut_mode2 = lut_mode;
+ }
+ lut_costs.clear();
+ for (int i = 0; i < lut_mode; i++)
+ lut_costs.push_back(1);
+ for (int i = lut_mode; i < lut_mode2; i++)
+ lut_costs.push_back(2 << (i - lut_mode));
+ }
+ else {
+ lut_file = arg;
+ rewrite_filename(lut_file);
+ if (!lut_file.empty() && !is_absolute_path(lut_file) && lut_file[0] != '+')
+ lut_file = std::string(pwd) + "/" + lut_file;
+ }
+ }
+ if (!luts_arg.empty()) {
+ lut_costs.clear();
+ for (auto &tok : split_tokens(luts_arg, ",")) {
+ auto parts = split_tokens(tok, ":");
+ if (GetSize(parts) == 0 && !lut_costs.empty())
+ lut_costs.push_back(lut_costs.back());
+ else if (GetSize(parts) == 1)
+ lut_costs.push_back(atoi(parts.at(0).c_str()));
+ else if (GetSize(parts) == 2)
+ while (GetSize(lut_costs) < atoi(parts.at(0).c_str()))
+ lut_costs.push_back(atoi(parts.at(1).c_str()));
+ else
+ log_cmd_error("Invalid -luts syntax.\n");
+ }
+ }
+
+ // ABC expects a box file for XAIG
+ if (box_file.empty())
+ 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;
+
+ if (tempdir_name.empty())
+ log_cmd_error("abc9_exe '-cwd' option is mandatory.\n");
+
+
+ abc9_module(design, script_file, exe_file, lut_costs,
+ delay_target, lutin_shared, fast_mode, show_tempdir,
+ box_file, lut_file, wire_delay, nomfs, tempdir_name);
+ }
+} Abc9ExePass;
+
+PRIVATE_NAMESPACE_END
+++ /dev/null
-/*
- * 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.
- *
- */
-
-// [[CITE]] ABC
-// Berkeley Logic Synthesis and Verification Group, ABC: A System for Sequential Synthesis and Verification
-// http://www.eecs.berkeley.edu/~alanmi/abc/
-
-#if 0
-// Based on &flow3 - better QoR but more experimental
-#define ABC_COMMAND_LUT "&st; &ps -l; &sweep -v; &scorr; " \
- "&st; &if {W}; &save; &st; &syn2; &if {W} -v; &save; &load; "\
- "&st; &if -g -K 6; &dch -f; &if {W} -v; &save; &load; "\
- "&st; &if -g -K 6; &synch2; &if {W} -v; &save; &load; "\
- "&mfs; &ps -l"
-#else
-#define ABC_COMMAND_LUT "&st; &scorr; &sweep; &dc2; &st; &dch -f; &ps; &if {W} {D} -v; &mfs; &ps -l"
-#endif
-
-
-#define ABC_FAST_COMMAND_LUT "&st; &if {W} {D}"
-
-#include "kernel/register.h"
-#include "kernel/sigtools.h"
-#include "kernel/celltypes.h"
-#include "kernel/cost.h"
-#include "kernel/log.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <cerrno>
-#include <sstream>
-#include <climits>
-
-#ifndef _WIN32
-# include <unistd.h>
-# include <dirent.h>
-#endif
-
-#include "frontends/aiger/aigerparse.h"
-#include "kernel/utils.h"
-
-#ifdef YOSYS_LINK_ABC
-extern "C" int Abc_RealMain(int argc, char *argv[]);
-#endif
-
-USING_YOSYS_NAMESPACE
-PRIVATE_NAMESPACE_BEGIN
-
-int map_autoidx;
-
-inline std::string remap_name(RTLIL::IdString abc9_name)
-{
- return stringf("$abc$%d$%s", map_autoidx, abc9_name.c_str()+1);
-}
-
-std::string add_echos_to_abc9_cmd(std::string str)
-{
- std::string new_str, token;
- for (size_t i = 0; i < str.size(); i++) {
- token += str[i];
- if (str[i] == ';') {
- while (i+1 < str.size() && str[i+1] == ' ')
- i++;
- new_str += "echo + " + token + " " + token + " ";
- token.clear();
- }
- }
-
- if (!token.empty()) {
- if (!new_str.empty())
- new_str += "echo + " + token + "; ";
- new_str += token;
- }
-
- return new_str;
-}
-
-std::string fold_abc9_cmd(std::string str)
-{
- std::string token, new_str = " ";
- int char_counter = 10;
-
- for (size_t i = 0; i <= str.size(); i++) {
- if (i < str.size())
- token += str[i];
- if (i == str.size() || str[i] == ';') {
- if (char_counter + token.size() > 75)
- new_str += "\n ", char_counter = 14;
- new_str += token, char_counter += token.size();
- token.clear();
- }
- }
-
- return new_str;
-}
-
-std::string replace_tempdir(std::string text, std::string tempdir_name, bool show_tempdir)
-{
- if (show_tempdir)
- return text;
-
- while (1) {
- size_t pos = text.find(tempdir_name);
- if (pos == std::string::npos)
- break;
- text = text.substr(0, pos) + "<abc-temp-dir>" + text.substr(pos + GetSize(tempdir_name));
- }
-
- std::string selfdir_name = proc_self_dirname();
- if (selfdir_name != "/") {
- while (1) {
- size_t pos = text.find(selfdir_name);
- if (pos == std::string::npos)
- break;
- text = text.substr(0, pos) + "<yosys-exe-dir>/" + text.substr(pos + GetSize(selfdir_name));
- }
- }
-
- return text;
-}
-
-struct abc9_output_filter
-{
- bool got_cr;
- int escape_seq_state;
- std::string linebuf;
- std::string tempdir_name;
- bool show_tempdir;
-
- abc9_output_filter(std::string tempdir_name, bool show_tempdir) : tempdir_name(tempdir_name), show_tempdir(show_tempdir)
- {
- got_cr = false;
- escape_seq_state = 0;
- }
-
- void next_char(char ch)
- {
- if (escape_seq_state == 0 && ch == '\033') {
- escape_seq_state = 1;
- return;
- }
- if (escape_seq_state == 1) {
- escape_seq_state = ch == '[' ? 2 : 0;
- return;
- }
- if (escape_seq_state == 2) {
- if ((ch < '0' || '9' < ch) && ch != ';')
- escape_seq_state = 0;
- return;
- }
- escape_seq_state = 0;
- if (ch == '\r') {
- got_cr = true;
- return;
- }
- if (ch == '\n') {
- log("ABC: %s\n", replace_tempdir(linebuf, tempdir_name, show_tempdir).c_str());
- got_cr = false, linebuf.clear();
- return;
- }
- if (got_cr)
- got_cr = false, linebuf.clear();
- linebuf += ch;
- }
-
- void next_line(const std::string &line)
- {
- //int pi, po;
- //if (sscanf(line.c_str(), "Start-point = pi%d. End-point = po%d.", &pi, &po) == 2) {
- // log("ABC: Start-point = pi%d (%s). End-point = po%d (%s).\n",
- // pi, pi_map.count(pi) ? pi_map.at(pi).c_str() : "???",
- // po, po_map.count(po) ? po_map.at(po).c_str() : "???");
- // return;
- //}
-
- for (char ch : line)
- next_char(ch);
- }
-};
-
-void abc9_module(RTLIL::Design *design, RTLIL::Module *module, std::string script_file, std::string exe_file,
- vector<int> lut_costs, std::string delay_target, std::string /*lutin_shared*/, bool fast_mode,
- bool show_tempdir, std::string box_file, std::string lut_file,
- std::string wire_delay, bool nomfs, std::string tempdir_name
-)
-{
- map_autoidx = autoidx++;
-
- //FIXME:
- //log_header(design, "Extracting gate netlist of module `%s' to `%s/input.xaig'..\n",
- // module->name.c_str(), replace_tempdir(tempdir_name, tempdir_name, show_tempdir).c_str());
-
- std::string abc9_script;
-
- if (!lut_costs.empty()) {
- abc9_script += stringf("read_lut %s/lutdefs.txt; ", tempdir_name.c_str());
- if (!box_file.empty())
- abc9_script += stringf("read_box %s; ", box_file.c_str());
- }
- else
- if (!lut_file.empty()) {
- abc9_script += stringf("read_lut %s; ", lut_file.c_str());
- if (!box_file.empty())
- abc9_script += stringf("read_box %s; ", box_file.c_str());
- }
- else
- log_abort();
-
- abc9_script += stringf("&read %s/input.xaig; &ps; ", tempdir_name.c_str());
-
- if (!script_file.empty()) {
- if (script_file[0] == '+') {
- for (size_t i = 1; i < script_file.size(); i++)
- if (script_file[i] == '\'')
- abc9_script += "'\\''";
- else if (script_file[i] == ',')
- abc9_script += " ";
- else
- abc9_script += script_file[i];
- } else
- abc9_script += stringf("source %s", script_file.c_str());
- } else if (!lut_costs.empty() || !lut_file.empty()) {
- abc9_script += fast_mode ? ABC_FAST_COMMAND_LUT : ABC_COMMAND_LUT;
- } else
- log_abort();
-
- for (size_t pos = abc9_script.find("{D}"); pos != std::string::npos; pos = abc9_script.find("{D}", pos))
- abc9_script = abc9_script.substr(0, pos) + delay_target + abc9_script.substr(pos+3);
-
- //for (size_t pos = abc9_script.find("{S}"); pos != std::string::npos; pos = abc9_script.find("{S}", pos))
- // abc9_script = abc9_script.substr(0, pos) + lutin_shared + abc9_script.substr(pos+3);
-
- for (size_t pos = abc9_script.find("{W}"); pos != std::string::npos; pos = abc9_script.find("{W}", pos))
- abc9_script = abc9_script.substr(0, pos) + wire_delay + abc9_script.substr(pos+3);
-
- if (nomfs)
- for (size_t pos = abc9_script.find("&mfs"); pos != std::string::npos; pos = abc9_script.find("&mfs", pos))
- abc9_script = abc9_script.erase(pos, strlen("&mfs"));
-
- abc9_script += stringf("; &write -n %s/output.aig", tempdir_name.c_str());
- abc9_script = add_echos_to_abc9_cmd(abc9_script);
-
- for (size_t i = 0; i+1 < abc9_script.size(); i++)
- if (abc9_script[i] == ';' && abc9_script[i+1] == ' ')
- abc9_script[i+1] = '\n';
-
- FILE *f = fopen(stringf("%s/abc.script", tempdir_name.c_str()).c_str(), "wt");
- fprintf(f, "%s\n", abc9_script.c_str());
- fclose(f);
-
- int count_outputs = design->scratchpad_get_int("write_xaiger.num_outputs");
- log("Extracted %d AND gates and %d wires to a netlist network with %d inputs and %d outputs.\n",
- design->scratchpad_get_int("write_xaiger.num_ands"),
- design->scratchpad_get_int("write_xaiger.num_wires"),
- design->scratchpad_get_int("write_xaiger.num_inputs"),
- count_outputs);
-
- if (count_outputs > 0) {
- std::string buffer;
- std::ifstream ifs;
-#if 0
- buffer = stringf("%s/%s", tempdir_name.c_str(), "input.xaig");
- ifs.open(buffer);
- if (ifs.fail())
- log_error("Can't open ABC output file `%s'.\n", buffer.c_str());
- buffer = stringf("%s/%s", tempdir_name.c_str(), "input.sym");
- log_assert(!design->module(ID($__abc9__)));
- {
- AigerReader reader(design, ifs, ID($__abc9__), "" /* clk_name */, buffer.c_str() /* map_filename */, true /* wideports */);
- reader.parse_xaiger();
- }
- ifs.close();
- Pass::call_on_module(design, design->module(ID($__abc9__)), stringf("write_verilog -noexpr -norename -selected"));
- design->remove(design->module(ID($__abc9__)));
-#endif
-
- log_header(design, "Executing ABC9.\n");
-
- if (!lut_costs.empty()) {
- buffer = stringf("%s/lutdefs.txt", tempdir_name.c_str());
- f = fopen(buffer.c_str(), "wt");
- if (f == NULL)
- log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
- for (int i = 0; i < GetSize(lut_costs); i++)
- fprintf(f, "%d %d.00 1.00\n", i+1, lut_costs.at(i));
- fclose(f);
- }
-
- buffer = stringf("%s -s -f %s/abc.script 2>&1", exe_file.c_str(), tempdir_name.c_str());
- log("Running ABC command: %s\n", replace_tempdir(buffer, tempdir_name, show_tempdir).c_str());
-
-#ifndef YOSYS_LINK_ABC
- abc9_output_filter filt(tempdir_name, show_tempdir);
- int ret = run_command(buffer, std::bind(&abc9_output_filter::next_line, filt, std::placeholders::_1));
-#else
- // These needs to be mutable, supposedly due to getopt
- char *abc9_argv[5];
- string tmp_script_name = stringf("%s/abc.script", tempdir_name.c_str());
- abc9_argv[0] = strdup(exe_file.c_str());
- abc9_argv[1] = strdup("-s");
- abc9_argv[2] = strdup("-f");
- abc9_argv[3] = strdup(tmp_script_name.c_str());
- abc9_argv[4] = 0;
- int ret = Abc_RealMain(4, abc9_argv);
- free(abc9_argv[0]);
- free(abc9_argv[1]);
- free(abc9_argv[2]);
- free(abc9_argv[3]);
-#endif
- if (ret != 0)
- log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
-
- buffer = stringf("%s/%s", tempdir_name.c_str(), "output.aig");
- ifs.open(buffer, std::ifstream::binary);
- if (ifs.fail())
- log_error("Can't open ABC output file `%s'.\n", buffer.c_str());
-
- buffer = stringf("%s/%s", tempdir_name.c_str(), "input.sym");
- log_assert(!design->module(ID($__abc9__)));
-
- AigerReader reader(design, ifs, ID($__abc9__), "" /* clk_name */, buffer.c_str() /* map_filename */, true /* wideports */);
- reader.parse_xaiger();
- ifs.close();
-
-#if 0
- Pass::call_on_module(design, design->module(ID($__abc9__)), stringf("write_verilog -noexpr -norename -selected"));
-#endif
-
- log_header(design, "Re-integrating ABC9 results.\n");
- RTLIL::Module *mapped_mod = design->module(ID($__abc9__));
- if (mapped_mod == NULL)
- log_error("ABC output file does not contain a module `$__abc9__'.\n");
-
- for (auto w : mapped_mod->wires())
- module->addWire(remap_name(w->name), GetSize(w));
-
- for (auto it = module->cells_.begin(); it != module->cells_.end(); )
- if (it->second->type.in(ID($_AND_), ID($_NOT_), ID($__ABC9_FF_)))
- it = module->cells_.erase(it);
- else
- ++it;
-
- dict<SigBit, pool<IdString>> bit_drivers, bit_users;
- TopoSort<IdString, RTLIL::sort_by_id_str> toposort;
- dict<RTLIL::Cell*,RTLIL::Cell*> not2drivers;
- dict<SigBit, std::vector<RTLIL::Cell*>> bit2sinks;
-
- std::map<IdString, int> cell_stats;
- for (auto mapped_cell : mapped_mod->cells())
- {
- toposort.node(mapped_cell->name);
-
- RTLIL::Cell *cell = nullptr;
- if (mapped_cell->type == ID($_NOT_)) {
- RTLIL::SigBit a_bit = mapped_cell->getPort(ID::A);
- RTLIL::SigBit y_bit = mapped_cell->getPort(ID::Y);
- bit_users[a_bit].insert(mapped_cell->name);
- bit_drivers[y_bit].insert(mapped_cell->name);
-
- if (!a_bit.wire) {
- mapped_cell->setPort(ID::Y, module->addWire(NEW_ID));
- RTLIL::Wire *wire = module->wire(remap_name(y_bit.wire->name));
- log_assert(wire);
- module->connect(RTLIL::SigBit(wire, y_bit.offset), State::S1);
- }
- else if (!lut_costs.empty() || !lut_file.empty()) {
- RTLIL::Cell* driver_lut = nullptr;
- // ABC can return NOT gates that drive POs
- if (!a_bit.wire->port_input) {
- // If it's not a NOT gate that that comes from a PI directly,
- // find the driver LUT and clone that to guarantee that we won't
- // increase the max logic depth
- // (TODO: Optimise by not cloning unless will increase depth)
- RTLIL::IdString driver_name;
- if (GetSize(a_bit.wire) == 1)
- driver_name = stringf("%s$lut", a_bit.wire->name.c_str());
- else
- driver_name = stringf("%s[%d]$lut", a_bit.wire->name.c_str(), a_bit.offset);
- driver_lut = mapped_mod->cell(driver_name);
- }
-
- if (!driver_lut) {
- // If a driver couldn't be found (could be from PI or box CI)
- // then implement using a LUT
- cell = module->addLut(remap_name(stringf("%s$lut", mapped_cell->name.c_str())),
- RTLIL::SigBit(module->wires_.at(remap_name(a_bit.wire->name)), a_bit.offset),
- RTLIL::SigBit(module->wires_.at(remap_name(y_bit.wire->name)), y_bit.offset),
- RTLIL::Const::from_string("01"));
- bit2sinks[cell->getPort(ID::A)].push_back(cell);
- cell_stats[ID($lut)]++;
- }
- else
- not2drivers[mapped_cell] = driver_lut;
- continue;
- }
- else
- log_abort();
- continue;
- }
- cell_stats[mapped_cell->type]++;
-
- RTLIL::Cell *existing_cell = nullptr;
- if (mapped_cell->type.in(ID($lut), ID($__ABC9_FF_))) {
- if (mapped_cell->type == ID($lut) &&
- GetSize(mapped_cell->getPort(ID::A)) == 1 &&
- mapped_cell->getParam(ID(LUT)) == RTLIL::Const::from_string("01")) {
- SigSpec my_a = module->wires_.at(remap_name(mapped_cell->getPort(ID::A).as_wire()->name));
- SigSpec my_y = module->wires_.at(remap_name(mapped_cell->getPort(ID::Y).as_wire()->name));
- module->connect(my_y, my_a);
- log_abort();
- continue;
- }
- cell = module->addCell(remap_name(mapped_cell->name), mapped_cell->type);
- }
- else {
- existing_cell = module->cell(mapped_cell->name);
- log_assert(existing_cell);
- cell = module->addCell(remap_name(mapped_cell->name), mapped_cell->type);
- }
-
- RTLIL::Module* box_module = design->module(mapped_cell->type);
- auto abc9_flop = box_module && box_module->attributes.count("\\abc9_flop");
- for (auto &mapped_conn : mapped_cell->connections()) {
- RTLIL::SigSpec newsig;
- for (auto c : mapped_conn.second.chunks()) {
- if (c.width == 0)
- continue;
- //log_assert(c.width == 1);
- if (c.wire)
- c.wire = module->wires_.at(remap_name(c.wire->name));
- newsig.append(c);
- }
- if (existing_cell) {
- auto it = existing_cell->connections_.find(mapped_conn.first);
- if (it == existing_cell->connections_.end())
- continue;
- log_assert(GetSize(newsig) >= GetSize(it->second));
- newsig = newsig.extract(0, GetSize(it->second));
- }
- cell->setPort(mapped_conn.first, newsig);
-
- if (abc9_flop)
- continue;
-
- if (cell->input(mapped_conn.first)) {
- for (auto i : newsig)
- bit2sinks[i].push_back(cell);
- for (auto i : mapped_conn.second)
- bit_users[i].insert(mapped_cell->name);
- }
- if (cell->output(mapped_conn.first))
- for (auto i : mapped_conn.second)
- bit_drivers[i].insert(mapped_cell->name);
- }
-
- if (existing_cell) {
- cell->parameters = existing_cell->parameters;
- cell->attributes = existing_cell->attributes;
- if (cell->attributes.erase("\\abc9_box_seq")) {
- module->swap_names(cell, existing_cell);
- module->remove(existing_cell);
- }
- }
- else {
- cell->parameters = mapped_cell->parameters;
- cell->attributes = mapped_cell->attributes;
- }
- }
-
- // Copy connections (and rename) from mapped_mod to module
- for (auto conn : mapped_mod->connections()) {
- if (!conn.first.is_fully_const()) {
- auto chunks = conn.first.chunks();
- for (auto &c : chunks)
- c.wire = module->wires_.at(remap_name(c.wire->name));
- conn.first = std::move(chunks);
- }
- if (!conn.second.is_fully_const()) {
- auto chunks = conn.second.chunks();
- for (auto &c : chunks)
- if (c.wire)
- c.wire = module->wires_.at(remap_name(c.wire->name));
- conn.second = std::move(chunks);
- }
- module->connect(conn);
- }
-
- for (auto &it : cell_stats)
- log("ABC RESULTS: %15s cells: %8d\n", it.first.c_str(), it.second);
- int in_wires = 0, out_wires = 0;
-
- // Stitch in mapped_mod's inputs/outputs into module
- for (auto port : mapped_mod->ports) {
- RTLIL::Wire *w = mapped_mod->wire(port);
- RTLIL::Wire *wire = module->wire(port);
- log_assert(wire);
- RTLIL::Wire *remap_wire = module->wire(remap_name(port));
- RTLIL::SigSpec signal = RTLIL::SigSpec(wire, 0, GetSize(remap_wire));
- log_assert(GetSize(signal) >= GetSize(remap_wire));
-
- RTLIL::SigSig conn;
- if (w->port_output) {
- conn.first = signal;
- conn.second = remap_wire;
- out_wires++;
- module->connect(conn);
- }
- else if (w->port_input) {
- conn.first = remap_wire;
- conn.second = signal;
- in_wires++;
- module->connect(conn);
- }
- }
-
- for (auto &it : bit_users)
- if (bit_drivers.count(it.first))
- for (auto driver_cell : bit_drivers.at(it.first))
- for (auto user_cell : it.second)
- toposort.edge(driver_cell, user_cell);
- bool no_loops YS_ATTRIBUTE(unused) = toposort.sort();
- log_assert(no_loops);
-
- for (auto ii = toposort.sorted.rbegin(); ii != toposort.sorted.rend(); ii++) {
- RTLIL::Cell *not_cell = mapped_mod->cell(*ii);
- log_assert(not_cell);
- if (not_cell->type != ID($_NOT_))
- continue;
- auto it = not2drivers.find(not_cell);
- if (it == not2drivers.end())
- continue;
- RTLIL::Cell *driver_lut = it->second;
- RTLIL::SigBit a_bit = not_cell->getPort(ID::A);
- RTLIL::SigBit y_bit = not_cell->getPort(ID::Y);
- RTLIL::Const driver_mask;
-
- a_bit.wire = module->wires_.at(remap_name(a_bit.wire->name));
- y_bit.wire = module->wires_.at(remap_name(y_bit.wire->name));
-
- auto jt = bit2sinks.find(a_bit);
- if (jt == bit2sinks.end())
- goto clone_lut;
-
- for (auto sink_cell : jt->second)
- if (sink_cell->type != ID($lut))
- goto clone_lut;
-
- // Push downstream LUTs past inverter
- for (auto sink_cell : jt->second) {
- SigSpec A = sink_cell->getPort(ID::A);
- RTLIL::Const mask = sink_cell->getParam(ID(LUT));
- int index = 0;
- for (; index < GetSize(A); index++)
- if (A[index] == a_bit)
- break;
- log_assert(index < GetSize(A));
- int i = 0;
- while (i < GetSize(mask)) {
- for (int j = 0; j < (1 << index); j++)
- std::swap(mask[i+j], mask[i+j+(1 << index)]);
- i += 1 << (index+1);
- }
- A[index] = y_bit;
- sink_cell->setPort(ID::A, A);
- sink_cell->setParam(ID(LUT), mask);
- }
-
- // Since we have rewritten all sinks (which we know
- // to be only LUTs) to be after the inverter, we can
- // go ahead and clone the LUT with the expectation
- // that the original driving LUT will become dangling
- // and get cleaned away
-clone_lut:
- driver_mask = driver_lut->getParam(ID(LUT));
- for (auto &b : driver_mask.bits) {
- if (b == RTLIL::State::S0) b = RTLIL::State::S1;
- else if (b == RTLIL::State::S1) b = RTLIL::State::S0;
- }
- auto cell = module->addLut(NEW_ID,
- driver_lut->getPort(ID::A),
- y_bit,
- driver_mask);
- for (auto &bit : cell->connections_.at(ID::A)) {
- bit.wire = module->wires_.at(remap_name(bit.wire->name));
- bit2sinks[bit].push_back(cell);
- }
- }
-
- //log("ABC RESULTS: internal signals: %8d\n", int(signal_list.size()) - in_wires - out_wires);
- log("ABC RESULTS: input signals: %8d\n", in_wires);
- log("ABC RESULTS: output signals: %8d\n", out_wires);
-
- design->remove(mapped_mod);
- }
- //else
- //{
- // log("Don't call ABC as there is nothing to map.\n");
- //}
-}
-
-struct Abc9MapPass : public Pass {
- Abc9MapPass() : Pass("abc9_map", "use ABC9 for technology mapping") { }
- void help() YS_OVERRIDE
- {
- // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
- log("\n");
- log(" abc9_map [options] [selection]\n");
- log("\n");
- log("This pass uses the ABC tool [1] for technology mapping of yosys's internal gate\n");
- log("library to a target architecture.\n");
- log("\n");
- log(" -exe <command>\n");
-#ifdef ABCEXTERNAL
- log(" use the specified command instead of \"" ABCEXTERNAL "\" to execute ABC.\n");
-#else
- log(" use the specified command instead of \"<yosys-bindir>/yosys-abc\" to execute ABC.\n");
-#endif
- log(" This can e.g. be used to call a specific version of ABC or a wrapper.\n");
- log("\n");
- log(" -script <file>\n");
- log(" use the specified ABC script file instead of the default script.\n");
- log("\n");
- log(" if <file> starts with a plus sign (+), then the rest of the filename\n");
- log(" string is interpreted as the command string to be passed to ABC. The\n");
- log(" leading plus sign is removed and all commas (,) in the string are\n");
- log(" replaced with blanks before the string is passed to ABC.\n");
- log("\n");
- log(" if no -script parameter is given, the following scripts are used:\n");
- log("\n");
- log(" for -lut/-luts (only one LUT size):\n");
- log("%s\n", fold_abc9_cmd(ABC_COMMAND_LUT /*"; lutpack {S}"*/).c_str());
- log("\n");
- log(" for -lut/-luts (different LUT sizes):\n");
- log("%s\n", fold_abc9_cmd(ABC_COMMAND_LUT).c_str());
- log("\n");
- log(" -fast\n");
- log(" use different default scripts that are slightly faster (at the cost\n");
- log(" of output quality):\n");
- log("\n");
- log(" for -lut/-luts:\n");
- log("%s\n", fold_abc9_cmd(ABC_FAST_COMMAND_LUT).c_str());
- log("\n");
- log(" -D <picoseconds>\n");
- log(" set delay target. the string {D} in the default scripts above is\n");
- log(" replaced by this option when used, and an empty string otherwise\n");
- log(" (indicating best possible delay).\n");
- log("\n");
-// log(" -S <num>\n");
-// log(" maximum number of LUT inputs shared.\n");
-// log(" (replaces {S} in the default scripts above, default: -S 1)\n");
-// log("\n");
- log(" -lut <width>\n");
- log(" generate netlist using luts of (max) the specified width.\n");
- log("\n");
- log(" -lut <w1>:<w2>\n");
- log(" generate netlist using luts of (max) the specified width <w2>. All\n");
- log(" luts with width <= <w1> have constant cost. for luts larger than <w1>\n");
- log(" the area cost doubles with each additional input bit. the delay cost\n");
- log(" is still constant for all lut widths.\n");
- log("\n");
- log(" -lut <file>\n");
- log(" pass this file with lut library to ABC.\n");
- log("\n");
- log(" -luts <cost1>,<cost2>,<cost3>,<sizeN>:<cost4-N>,..\n");
- log(" generate netlist using luts. Use the specified costs for luts with 1,\n");
- log(" 2, 3, .. inputs.\n");
- log("\n");
- log(" -dff\n");
- log(" also pass $_ABC9_FF_ cells through to ABC. modules with many clock\n");
- log(" domains are marked as such and automatically partitioned by ABC.\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");
- log("\n");
- 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");
- log("output when passing an ABC script that writes a file. Instead write your full\n");
- log("design as BLIF file with write_blif and then load that into ABC externally if\n");
- log("you want to use ABC to convert your design into another format.\n");
- log("\n");
- log("[1] http://www.eecs.berkeley.edu/~alanmi/abc/\n");
- log("\n");
- }
- void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
- {
- log_header(design, "Executing ABC9_MAP pass (technology mapping using ABC9).\n");
-
-#ifdef ABCEXTERNAL
- std::string exe_file = ABCEXTERNAL;
-#else
- std::string exe_file = proc_self_dirname() + "yosys-abc";
-#endif
- std::string script_file, clk_str, box_file, lut_file;
- std::string delay_target, lutin_shared = "-S 1", wire_delay;
- std::string tempdir_name;
- bool fast_mode = false;
- bool show_tempdir = false;
- bool nomfs = false;
- vector<int> lut_costs;
-
-#if 0
- cleanup = false;
- show_tempdir = true;
-#endif
-
-#ifdef _WIN32
-#ifndef ABCEXTERNAL
- if (!check_file_exists(exe_file + ".exe") && check_file_exists(proc_self_dirname() + "..\\yosys-abc.exe"))
- exe_file = proc_self_dirname() + "..\\yosys-abc";
-#endif
-#endif
-
- std::string lut_arg, luts_arg;
- exe_file = design->scratchpad_get_string("abc9.exe", exe_file /* inherit default value if not set */);
- script_file = design->scratchpad_get_string("abc9.script", script_file);
- if (design->scratchpad.count("abc9.D")) {
- delay_target = "-D " + design->scratchpad_get_string("abc9.D");
- }
- lut_arg = design->scratchpad_get_string("abc9.lut", lut_arg);
- luts_arg = design->scratchpad_get_string("abc9.luts", luts_arg);
- fast_mode = design->scratchpad_get_bool("abc9.fast", fast_mode);
- show_tempdir = design->scratchpad_get_bool("abc9.showtmp", show_tempdir);
- box_file = design->scratchpad_get_string("abc9.box", box_file);
- if (design->scratchpad.count("abc9.W")) {
- wire_delay = "-W " + design->scratchpad_get_string("abc9.W");
- }
- nomfs = design->scratchpad_get_bool("abc9.nomfs", nomfs);
-
- size_t argidx;
- char pwd [PATH_MAX];
- if (!getcwd(pwd, sizeof(pwd))) {
- log_cmd_error("getcwd failed: %s\n", strerror(errno));
- log_abort();
- }
- for (argidx = 1; argidx < args.size(); argidx++) {
- std::string arg = args[argidx];
- if (arg == "-exe" && argidx+1 < args.size()) {
- exe_file = args[++argidx];
- continue;
- }
- if (arg == "-script" && argidx+1 < args.size()) {
- script_file = args[++argidx];
- continue;
- }
- if (arg == "-D" && argidx+1 < args.size()) {
- delay_target = "-D " + args[++argidx];
- continue;
- }
- //if (arg == "-S" && argidx+1 < args.size()) {
- // lutin_shared = "-S " + args[++argidx];
- // continue;
- //}
- if (arg == "-lut" && argidx+1 < args.size()) {
- lut_arg = args[++argidx];
- continue;
- }
- if (arg == "-luts" && argidx+1 < args.size()) {
- lut_arg = args[++argidx];
- continue;
- }
- if (arg == "-fast") {
- fast_mode = true;
- continue;
- }
- if (arg == "-showtmp") {
- show_tempdir = true;
- continue;
- }
- if (arg == "-box" && argidx+1 < args.size()) {
- box_file = args[++argidx];
- continue;
- }
- if (arg == "-W" && argidx+1 < args.size()) {
- wire_delay = "-W " + args[++argidx];
- continue;
- }
- if (arg == "-nomfs") {
- nomfs = true;
- continue;
- }
- if (arg == "-tempdir" && argidx+1 < args.size()) {
- tempdir_name = args[++argidx];
- continue;
- }
- break;
- }
- extra_args(args, argidx, design);
-
- rewrite_filename(script_file);
- if (!script_file.empty() && !is_absolute_path(script_file) && script_file[0] != '+')
- script_file = std::string(pwd) + "/" + script_file;
-
- // handle -lut / -luts args
- if (!lut_arg.empty()) {
- string arg = lut_arg;
- if (arg.find_first_not_of("0123456789:") == std::string::npos) {
- size_t pos = arg.find_first_of(':');
- int lut_mode = 0, lut_mode2 = 0;
- if (pos != string::npos) {
- lut_mode = atoi(arg.substr(0, pos).c_str());
- lut_mode2 = atoi(arg.substr(pos+1).c_str());
- } else {
- lut_mode = atoi(arg.c_str());
- lut_mode2 = lut_mode;
- }
- lut_costs.clear();
- for (int i = 0; i < lut_mode; i++)
- lut_costs.push_back(1);
- for (int i = lut_mode; i < lut_mode2; i++)
- lut_costs.push_back(2 << (i - lut_mode));
- }
- else {
- lut_file = arg;
- rewrite_filename(lut_file);
- if (!lut_file.empty() && !is_absolute_path(lut_file) && lut_file[0] != '+')
- lut_file = std::string(pwd) + "/" + lut_file;
- }
- }
- if (!luts_arg.empty()) {
- lut_costs.clear();
- for (auto &tok : split_tokens(luts_arg, ",")) {
- auto parts = split_tokens(tok, ":");
- if (GetSize(parts) == 0 && !lut_costs.empty())
- lut_costs.push_back(lut_costs.back());
- else if (GetSize(parts) == 1)
- lut_costs.push_back(atoi(parts.at(0).c_str()));
- else if (GetSize(parts) == 2)
- while (GetSize(lut_costs) < atoi(parts.at(0).c_str()))
- lut_costs.push_back(atoi(parts.at(1).c_str()));
- else
- log_cmd_error("Invalid -luts syntax.\n");
- }
- }
-
- // ABC expects a box file for XAIG
- if (box_file.empty())
- 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;
-
- if (tempdir_name.empty())
- log_cmd_error("abc9_map '-tempdir' option is mandatory.\n");
-
-
- for (auto mod : design->selected_modules())
- {
- if (mod->processes.size() > 0) {
- log("Skipping module %s as it contains processes.\n", log_id(mod));
- continue;
- }
-
- if (!design->selected_whole_module(mod))
- log_error("Can't handle partially selected module %s!\n", log_id(mod));
-
- abc9_module(design, mod, script_file, exe_file, lut_costs,
- delay_target, lutin_shared, fast_mode, show_tempdir,
- box_file, lut_file, wire_delay, nomfs, tempdir_name);
- }
- }
-} Abc9MapPass;
-
-PRIVATE_NAMESPACE_END
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
+int map_autoidx;
+
+inline std::string remap_name(RTLIL::IdString abc9_name)
+{
+ return stringf("$abc$%d$%s", map_autoidx, abc9_name.c_str()+1);
+}
+
void break_scc(RTLIL::Module *module)
{
// For every unique SCC found, (arbitrarily) find the first
}
}
+void reintegrate(RTLIL::Module *module)
+{
+ auto design = module->design;
+ log_assert(design);
+
+ map_autoidx = autoidx++;
+
+ RTLIL::Module *mapped_mod = design->module(stringf("%s$abc9", module->name.c_str()));
+ if (mapped_mod == NULL)
+ log_error("ABC output file does not contain a module `%s$abc'.\n", log_id(module));
+
+ for (auto w : mapped_mod->wires())
+ module->addWire(remap_name(w->name), GetSize(w));
+
+ for (auto it = module->cells_.begin(); it != module->cells_.end(); )
+ if (it->second->type.in(ID($_AND_), ID($_NOT_), ID($__ABC9_FF_)))
+ it = module->cells_.erase(it);
+ else
+ ++it;
+
+ dict<SigBit, pool<IdString>> bit_drivers, bit_users;
+ TopoSort<IdString, RTLIL::sort_by_id_str> toposort;
+ dict<RTLIL::Cell*,RTLIL::Cell*> not2drivers;
+ dict<SigBit, std::vector<RTLIL::Cell*>> bit2sinks;
+
+ std::map<IdString, int> cell_stats;
+ for (auto mapped_cell : mapped_mod->cells())
+ {
+ toposort.node(mapped_cell->name);
+
+ RTLIL::Cell *cell = nullptr;
+ if (mapped_cell->type == ID($_NOT_)) {
+ RTLIL::SigBit a_bit = mapped_cell->getPort(ID::A);
+ RTLIL::SigBit y_bit = mapped_cell->getPort(ID::Y);
+ bit_users[a_bit].insert(mapped_cell->name);
+ bit_drivers[y_bit].insert(mapped_cell->name);
+
+ if (!a_bit.wire) {
+ mapped_cell->setPort(ID::Y, module->addWire(NEW_ID));
+ RTLIL::Wire *wire = module->wire(remap_name(y_bit.wire->name));
+ log_assert(wire);
+ module->connect(RTLIL::SigBit(wire, y_bit.offset), State::S1);
+ }
+ else {
+ RTLIL::Cell* driver_lut = nullptr;
+ // ABC can return NOT gates that drive POs
+ if (!a_bit.wire->port_input) {
+ // If it's not a NOT gate that that comes from a PI directly,
+ // find the driver LUT and clone that to guarantee that we won't
+ // increase the max logic depth
+ // (TODO: Optimise by not cloning unless will increase depth)
+ RTLIL::IdString driver_name;
+ if (GetSize(a_bit.wire) == 1)
+ driver_name = stringf("%s$lut", a_bit.wire->name.c_str());
+ else
+ driver_name = stringf("%s[%d]$lut", a_bit.wire->name.c_str(), a_bit.offset);
+ driver_lut = mapped_mod->cell(driver_name);
+ }
+
+ if (!driver_lut) {
+ // If a driver couldn't be found (could be from PI or box CI)
+ // then implement using a LUT
+ cell = module->addLut(remap_name(stringf("%s$lut", mapped_cell->name.c_str())),
+ RTLIL::SigBit(module->wires_.at(remap_name(a_bit.wire->name)), a_bit.offset),
+ RTLIL::SigBit(module->wires_.at(remap_name(y_bit.wire->name)), y_bit.offset),
+ RTLIL::Const::from_string("01"));
+ bit2sinks[cell->getPort(ID::A)].push_back(cell);
+ cell_stats[ID($lut)]++;
+ }
+ else
+ not2drivers[mapped_cell] = driver_lut;
+ }
+ continue;
+ }
+ cell_stats[mapped_cell->type]++;
+
+ RTLIL::Cell *existing_cell = nullptr;
+ if (mapped_cell->type.in(ID($lut), ID($__ABC9_FF_))) {
+ if (mapped_cell->type == ID($lut) &&
+ GetSize(mapped_cell->getPort(ID::A)) == 1 &&
+ mapped_cell->getParam(ID(LUT)) == RTLIL::Const::from_string("01")) {
+ SigSpec my_a = module->wires_.at(remap_name(mapped_cell->getPort(ID::A).as_wire()->name));
+ SigSpec my_y = module->wires_.at(remap_name(mapped_cell->getPort(ID::Y).as_wire()->name));
+ module->connect(my_y, my_a);
+ log_abort();
+ continue;
+ }
+ cell = module->addCell(remap_name(mapped_cell->name), mapped_cell->type);
+ }
+ else {
+ existing_cell = module->cell(mapped_cell->name);
+ log_assert(existing_cell);
+ cell = module->addCell(remap_name(mapped_cell->name), mapped_cell->type);
+ }
+
+ RTLIL::Module* box_module = design->module(mapped_cell->type);
+ auto abc9_flop = box_module && box_module->attributes.count("\\abc9_flop");
+ for (auto &mapped_conn : mapped_cell->connections()) {
+ RTLIL::SigSpec newsig;
+ for (auto c : mapped_conn.second.chunks()) {
+ if (c.width == 0)
+ continue;
+ //log_assert(c.width == 1);
+ if (c.wire)
+ c.wire = module->wires_.at(remap_name(c.wire->name));
+ newsig.append(c);
+ }
+ if (existing_cell) {
+ auto it = existing_cell->connections_.find(mapped_conn.first);
+ if (it == existing_cell->connections_.end())
+ continue;
+ log_assert(GetSize(newsig) >= GetSize(it->second));
+ newsig = newsig.extract(0, GetSize(it->second));
+ }
+ cell->setPort(mapped_conn.first, newsig);
+
+ if (abc9_flop)
+ continue;
+
+ if (cell->input(mapped_conn.first)) {
+ for (auto i : newsig)
+ bit2sinks[i].push_back(cell);
+ for (auto i : mapped_conn.second)
+ bit_users[i].insert(mapped_cell->name);
+ }
+ if (cell->output(mapped_conn.first))
+ for (auto i : mapped_conn.second)
+ bit_drivers[i].insert(mapped_cell->name);
+ }
+
+ if (existing_cell) {
+ cell->parameters = existing_cell->parameters;
+ cell->attributes = existing_cell->attributes;
+ if (cell->attributes.erase("\\abc9_box_seq")) {
+ module->swap_names(cell, existing_cell);
+ module->remove(existing_cell);
+ }
+ }
+ else {
+ cell->parameters = mapped_cell->parameters;
+ cell->attributes = mapped_cell->attributes;
+ }
+ }
+
+ // Copy connections (and rename) from mapped_mod to module
+ for (auto conn : mapped_mod->connections()) {
+ if (!conn.first.is_fully_const()) {
+ auto chunks = conn.first.chunks();
+ for (auto &c : chunks)
+ c.wire = module->wires_.at(remap_name(c.wire->name));
+ conn.first = std::move(chunks);
+ }
+ if (!conn.second.is_fully_const()) {
+ auto chunks = conn.second.chunks();
+ for (auto &c : chunks)
+ if (c.wire)
+ c.wire = module->wires_.at(remap_name(c.wire->name));
+ conn.second = std::move(chunks);
+ }
+ module->connect(conn);
+ }
+
+ for (auto &it : cell_stats)
+ log("ABC RESULTS: %15s cells: %8d\n", it.first.c_str(), it.second);
+ int in_wires = 0, out_wires = 0;
+
+ // Stitch in mapped_mod's inputs/outputs into module
+ for (auto port : mapped_mod->ports) {
+ RTLIL::Wire *w = mapped_mod->wire(port);
+ RTLIL::Wire *wire = module->wire(port);
+ log_assert(wire);
+ RTLIL::Wire *remap_wire = module->wire(remap_name(port));
+ RTLIL::SigSpec signal = RTLIL::SigSpec(wire, 0, GetSize(remap_wire));
+ log_assert(GetSize(signal) >= GetSize(remap_wire));
+
+ RTLIL::SigSig conn;
+ if (w->port_output) {
+ conn.first = signal;
+ conn.second = remap_wire;
+ out_wires++;
+ module->connect(conn);
+ }
+ else if (w->port_input) {
+ conn.first = remap_wire;
+ conn.second = signal;
+ in_wires++;
+ module->connect(conn);
+ }
+ }
+
+ for (auto &it : bit_users)
+ if (bit_drivers.count(it.first))
+ for (auto driver_cell : bit_drivers.at(it.first))
+ for (auto user_cell : it.second)
+ toposort.edge(driver_cell, user_cell);
+ bool no_loops YS_ATTRIBUTE(unused) = toposort.sort();
+ log_assert(no_loops);
+
+ for (auto ii = toposort.sorted.rbegin(); ii != toposort.sorted.rend(); ii++) {
+ RTLIL::Cell *not_cell = mapped_mod->cell(*ii);
+ log_assert(not_cell);
+ if (not_cell->type != ID($_NOT_))
+ continue;
+ auto it = not2drivers.find(not_cell);
+ if (it == not2drivers.end())
+ continue;
+ RTLIL::Cell *driver_lut = it->second;
+ RTLIL::SigBit a_bit = not_cell->getPort(ID::A);
+ RTLIL::SigBit y_bit = not_cell->getPort(ID::Y);
+ RTLIL::Const driver_mask;
+
+ a_bit.wire = module->wires_.at(remap_name(a_bit.wire->name));
+ y_bit.wire = module->wires_.at(remap_name(y_bit.wire->name));
+
+ auto jt = bit2sinks.find(a_bit);
+ if (jt == bit2sinks.end())
+ goto clone_lut;
+
+ for (auto sink_cell : jt->second)
+ if (sink_cell->type != ID($lut))
+ goto clone_lut;
+
+ // Push downstream LUTs past inverter
+ for (auto sink_cell : jt->second) {
+ SigSpec A = sink_cell->getPort(ID::A);
+ RTLIL::Const mask = sink_cell->getParam(ID(LUT));
+ int index = 0;
+ for (; index < GetSize(A); index++)
+ if (A[index] == a_bit)
+ break;
+ log_assert(index < GetSize(A));
+ int i = 0;
+ while (i < GetSize(mask)) {
+ for (int j = 0; j < (1 << index); j++)
+ std::swap(mask[i+j], mask[i+j+(1 << index)]);
+ i += 1 << (index+1);
+ }
+ A[index] = y_bit;
+ sink_cell->setPort(ID::A, A);
+ sink_cell->setParam(ID(LUT), mask);
+ }
+
+ // Since we have rewritten all sinks (which we know
+ // to be only LUTs) to be after the inverter, we can
+ // go ahead and clone the LUT with the expectation
+ // that the original driving LUT will become dangling
+ // and get cleaned away
+clone_lut:
+ driver_mask = driver_lut->getParam(ID(LUT));
+ for (auto &b : driver_mask.bits) {
+ if (b == RTLIL::State::S0) b = RTLIL::State::S1;
+ else if (b == RTLIL::State::S1) b = RTLIL::State::S0;
+ }
+ auto cell = module->addLut(NEW_ID,
+ driver_lut->getPort(ID::A),
+ y_bit,
+ driver_mask);
+ for (auto &bit : cell->connections_.at(ID::A)) {
+ bit.wire = module->wires_.at(remap_name(bit.wire->name));
+ bit2sinks[bit].push_back(cell);
+ }
+ }
+
+ //log("ABC RESULTS: internal signals: %8d\n", int(signal_list.size()) - in_wires - out_wires);
+ log("ABC RESULTS: input signals: %8d\n", in_wires);
+ log("ABC RESULTS: output signals: %8d\n", out_wires);
+
+ design->remove(mapped_mod);
+}
+
struct Abc9OpsPass : public Pass {
Abc9OpsPass() : Pass("abc9_ops", "helper functions for ABC9") { }
void help() YS_OVERRIDE
bool unbreak_scc_mode = false;
bool prep_dff_mode = false;
bool prep_holes_mode = false;
+ bool reintegrate_mode = false;
bool dff_mode = false;
size_t argidx;
prep_holes_mode = true;
continue;
}
+ if (arg == "-reintegrate") {
+ reintegrate_mode = true;
+ continue;
+ }
if (arg == "-dff") {
dff_mode = true;
continue;
extra_args(args, argidx, design);
for (auto mod : design->selected_modules()) {
- if (mod->get_blackbox_attribute())
- continue;
if (mod->get_bool_attribute("\\abc9_holes"))
continue;
prep_dff(mod);
if (prep_holes_mode)
prep_holes(mod, dff_mode);
+ if (reintegrate_mode)
+ reintegrate(mod);
}
}
} Abc9OpsPass;
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