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-rw-r--r--passes/techmap/abc9.cc1335
1 files changed, 178 insertions, 1157 deletions
diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index 8276c3c16..2aeda16d6 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
- * 2019 Eddie Hung <eddie@fpgeh.com>
+ * (C) 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
@@ -22,806 +22,79 @@
// 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/rtlil.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
+// abc9_exe.cc
+std::string fold_abc9_cmd(std::string str);
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
-bool markgroups;
-int map_autoidx;
-SigMap assign_map;
-RTLIL::Module *module;
-
-bool clk_polarity, en_polarity;
-RTLIL::SigSpec clk_sig, en_sig;
-
-inline std::string remap_name(RTLIL::IdString abc9_name)
-{
- return stringf("$abc$%d$%s", map_autoidx, abc9_name.c_str()+1);
-}
-
-void handle_loops(RTLIL::Design *design)
-{
- Pass::call(design, "scc -set_attr abc9_scc_id {}");
-
- // For every unique SCC found, (arbitrarily) find the first
- // cell in the component, and select (and mark) all its output
- // wires
- pool<RTLIL::Const> ids_seen;
- for (auto cell : module->cells()) {
- auto it = cell->attributes.find(ID(abc9_scc_id));
- if (it != cell->attributes.end()) {
- auto r = ids_seen.insert(it->second);
- if (r.second) {
- 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);
- }
- }
- }
- }
- cell->attributes.erase(it);
- }
- }
-
- module->fixup_ports();
-}
-
-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)
+struct Abc9Pass : public ScriptPass
{
- 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 *current_module, std::string script_file, std::string exe_file,
- bool cleanup, vector<int> lut_costs, bool dff_mode, std::string clk_str,
- bool /*keepff*/, 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, const dict<int,IdString> &box_lookup, bool nomfs
-)
-{
- module = current_module;
- map_autoidx = autoidx++;
-
- if (clk_str != "$")
- {
- clk_polarity = true;
- clk_sig = RTLIL::SigSpec();
-
- en_polarity = true;
- en_sig = RTLIL::SigSpec();
- }
-
- if (!clk_str.empty() && clk_str != "$")
- {
- if (clk_str.find(',') != std::string::npos) {
- int pos = clk_str.find(',');
- std::string en_str = clk_str.substr(pos+1);
- clk_str = clk_str.substr(0, pos);
- if (en_str[0] == '!') {
- en_polarity = false;
- en_str = en_str.substr(1);
- }
- if (module->wires_.count(RTLIL::escape_id(en_str)) != 0)
- en_sig = assign_map(RTLIL::SigSpec(module->wires_.at(RTLIL::escape_id(en_str)), 0));
- }
- if (clk_str[0] == '!') {
- clk_polarity = false;
- clk_str = clk_str.substr(1);
- }
- if (module->wires_.count(RTLIL::escape_id(clk_str)) != 0)
- clk_sig = assign_map(RTLIL::SigSpec(module->wires_.at(RTLIL::escape_id(clk_str)), 0));
- }
-
- if (dff_mode && clk_sig.empty())
- log_cmd_error("Clock domain %s not found.\n", clk_str.c_str());
-
- std::string tempdir_name = "/tmp/yosys-abc-XXXXXX";
- if (!cleanup)
- tempdir_name[0] = tempdir_name[4] = '_';
- tempdir_name = make_temp_dir(tempdir_name);
- 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 -v %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 -v %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()) {
- //bool all_luts_cost_same = true;
- //for (int this_cost : lut_costs)
- // if (this_cost != lut_costs.front())
- // all_luts_cost_same = false;
- abc9_script += fast_mode ? ABC_FAST_COMMAND_LUT : ABC_COMMAND_LUT;
- //if (all_luts_cost_same && !fast_mode)
- // abc9_script += "; lutpack {S}";
- } else
- log_abort();
-
- //if (script_file.empty() && !delay_target.empty())
- // for (size_t pos = abc9_script.find("dretime;"); pos != std::string::npos; pos = abc9_script.find("dretime;", pos+1))
- // abc9_script = abc9_script.substr(0, pos) + "dretime; retime -o {D};" + abc9_script.substr(pos+8);
-
- 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 %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);
-
- if (dff_mode || !clk_str.empty())
- {
- if (clk_sig.size() == 0)
- log("No%s clock domain found. Not extracting any FF cells.\n", clk_str.empty() ? "" : " matching");
- else {
- log("Found%s %s clock domain: %s", clk_str.empty() ? "" : " matching", clk_polarity ? "posedge" : "negedge", log_signal(clk_sig));
- if (en_sig.size() != 0)
- log(", enabled by %s%s", en_polarity ? "" : "!", log_signal(en_sig));
- log("\n");
- }
- }
-
- bool count_output = false;
- for (auto port_name : module->ports) {
- RTLIL::Wire *port_wire = module->wire(port_name);
- log_assert(port_wire);
- if (port_wire->port_output) {
- count_output = true;
- break;
- }
- }
-
- log_push();
-
- if (count_output)
- {
- design->selection_stack.emplace_back(false);
- RTLIL::Selection& sel = design->selection_stack.back();
- sel.select(module);
-
- handle_loops(design);
-
- Pass::call(design, "aigmap");
-
- //log("Extracted %d gates and %d wires to a netlist network with %d inputs and %d outputs.\n",
- // count_gates, GetSize(signal_list), count_input, count_output);
-
- Pass::call(design, stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str()));
-
- 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($__abc9__), "" /* clk_name */, buffer.c_str() /* map_filename */, true /* wideports */);
- reader.parse_xaiger();
- }
- ifs.close();
- Pass::call(design, stringf("write_verilog -noexpr -norename"));
- design->remove(design->module(ID($__abc9__)));
-#endif
-
- design->selection_stack.pop_back();
-
- 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(box_lookup);
- ifs.close();
-
-#if 0
- Pass::call(design, stringf("write_verilog -noexpr -norename"));
-#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");
-
- pool<RTLIL::SigBit> output_bits;
- for (auto &it : mapped_mod->wires_) {
- RTLIL::Wire *w = it.second;
- RTLIL::Wire *remap_wire = module->addWire(remap_name(w->name), GetSize(w));
- if (markgroups) remap_wire->attributes[ID(abcgroup)] = map_autoidx;
- if (w->port_output) {
- RTLIL::Wire *wire = module->wire(w->name);
- log_assert(wire);
- for (int i = 0; i < GetSize(w); i++)
- output_bits.insert({wire, i});
- }
- }
-
- for (auto &it : module->connections_) {
- auto &signal = it.first;
- auto bits = signal.bits();
- for (auto &b : bits)
- if (output_bits.count(b))
- b = module->addWire(NEW_ID);
- signal = std::move(bits);
- }
-
- dict<IdString, bool> abc9_box;
- vector<RTLIL::Cell*> boxes;
- for (const auto &it : module->cells_) {
- auto cell = it.second;
- if (cell->type.in(ID($_AND_), ID($_NOT_))) {
- module->remove(cell);
- continue;
- }
- auto jt = abc9_box.find(cell->type);
- if (jt == abc9_box.end()) {
- RTLIL::Module* box_module = design->module(cell->type);
- jt = abc9_box.insert(std::make_pair(cell->type, box_module && box_module->attributes.count(ID(abc9_box_id)))).first;
- }
- if (jt->second)
- boxes.emplace_back(cell);
- }
-
- 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 c : mapped_mod->cells())
- {
- toposort.node(c->name);
-
- RTLIL::Cell *cell = nullptr;
- if (c->type == ID($_NOT_)) {
- RTLIL::SigBit a_bit = c->getPort(ID::A);
- RTLIL::SigBit y_bit = c->getPort(ID::Y);
- bit_users[a_bit].insert(c->name);
- bit_drivers[y_bit].insert(c->name);
-
- if (!a_bit.wire) {
- c->setPort(ID::Y, module->addWire(NEW_ID));
- RTLIL::Wire *wire = module->wire(remap_name(y_bit.wire->name));
- log_assert(wire);
- module->connect(RTLIL::SigBit(wire, y_bit.offset), State::S1);
- }
- else if (!lut_costs.empty() || !lut_file.empty()) {
- RTLIL::Cell* driver_lut = nullptr;
- // ABC can return NOT gates that drive POs
- if (!a_bit.wire->port_input) {
- // If it's not a NOT gate that that comes from a PI directly,
- // find the driver LUT and clone that to guarantee that we won't
- // increase the max logic depth
- // (TODO: Optimise by not cloning unless will increase depth)
- RTLIL::IdString driver_name;
- if (GetSize(a_bit.wire) == 1)
- driver_name = stringf("%s$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", c->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($lut)]++;
- }
- else
- not2drivers[c] = driver_lut;
- continue;
- }
- else
- log_abort();
- if (cell && markgroups) cell->attributes[ID(abcgroup)] = map_autoidx;
- continue;
- }
- cell_stats[c->type]++;
-
- RTLIL::Cell *existing_cell = nullptr;
- if (c->type == ID($lut)) {
- if (GetSize(c->getPort(ID::A)) == 1 && c->getParam(ID(LUT)) == RTLIL::Const::from_string("01")) {
- SigSpec my_a = module->wires_.at(remap_name(c->getPort(ID::A).as_wire()->name));
- SigSpec my_y = module->wires_.at(remap_name(c->getPort(ID::Y).as_wire()->name));
- module->connect(my_y, my_a);
- if (markgroups) c->attributes[ID(abcgroup)] = map_autoidx;
- log_abort();
- continue;
- }
- cell = module->addCell(remap_name(c->name), c->type);
- }
- else {
- existing_cell = module->cell(c->name);
- log_assert(existing_cell);
- cell = module->addCell(remap_name(c->name), c->type);
- }
-
- if (markgroups) cell->attributes[ID(abcgroup)] = map_autoidx;
- if (existing_cell) {
- cell->parameters = existing_cell->parameters;
- cell->attributes = existing_cell->attributes;
- }
- else {
- cell->parameters = c->parameters;
- cell->attributes = c->attributes;
- }
- for (auto &conn : c->connections()) {
- RTLIL::SigSpec newsig;
- for (auto c : 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);
- }
- cell->setPort(conn.first, newsig);
-
- if (cell->input(conn.first)) {
- for (auto i : newsig)
- bit2sinks[i].push_back(cell);
- for (auto i : conn.second)
- bit_users[i].insert(c->name);
- }
- if (cell->output(conn.first))
- for (auto i : conn.second)
- bit_drivers[i].insert(c->name);
- }
- }
-
- for (auto existing_cell : boxes) {
- Cell *cell = module->cell(remap_name(existing_cell->name));
- if (cell) {
- for (auto &conn : existing_cell->connections()) {
- if (!conn.second.is_wire())
- continue;
- Wire *wire = conn.second.as_wire();
- if (!wire->get_bool_attribute(ID(abc9_padding)))
- continue;
- cell->unsetPort(conn.first);
- log_debug("Dropping padded port connection for %s (%s) .%s (%s )\n", log_id(cell), cell->type.c_str(), log_id(conn.first), log_signal(conn.second));
- }
- module->swap_names(cell, existing_cell);
- }
- module->remove(existing_cell);
- }
-
- // 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);
- }
- }
-
- // 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();
-
- //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
+ Abc9Pass() : ScriptPass("abc9", "use ABC9 for technology mapping") { }
+ void on_register() YS_OVERRIDE
{
- log("Don't call ABC as there is nothing to map.\n");
+ RTLIL::constpad["abc9.script.default"] = "+&scorr; &sweep; &dc2; &dch -f; &ps; &if {C} {W} {D} {R} -v; &mfs";
+ RTLIL::constpad["abc9.script.default.area"] = "+&scorr; &sweep; &dc2; &dch -f; &ps; &if {C} {W} {D} {R} -a -v; &mfs";
+ RTLIL::constpad["abc9.script.default.fast"] = "+&if {C} {W} {D} {R} -v";
+ // Based on ABC's &flow
+ RTLIL::constpad["abc9.script.flow"] = "+&scorr; &sweep;" \
+ "&dch -C 500;" \
+ /* Round 1 */ \
+ /* Map 1 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ "&st; &dsdb;" \
+ /* Map 2 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ "&st; &syn2 -m -R 10; &dsdb;" \
+ "&blut -a -K 6;" \
+ /* Map 3 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ /* Round 2 */ \
+ "&st; &sopb;" \
+ /* Map 1 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ "&st; &dsdb;" \
+ /* Map 2 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ "&st; &syn2 -m -R 10; &dsdb;" \
+ "&blut -a -K 6;" \
+ /* Map 3 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ /* Round 3 */ \
+ /* Map 1 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ "&st; &dsdb;" \
+ /* Map 2 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;" \
+ "&st; &syn2 -m -R 10; &dsdb;" \
+ "&blut -a -K 6;" \
+ /* Map 3 */ "&unmap; &if {C} {W} {D} {R} -v; &save; &load; &mfs;";
+ // Based on ABC's &flow2
+ RTLIL::constpad["abc9.script.flow2"] = "+&scorr; &sweep;" \
+ /* Comm1 */ "&synch2 -K 6 -C 500; &if -m {C} {W} {D} {R} -v; &mfs "/*"-W 4 -M 500 -C 7000"*/"; &save;"\
+ /* Comm2 */ "&dch -C 500; &if -m {C} {W} {D} {R} -v; &mfs "/*"-W 4 -M 500 -C 7000"*/"; &save;"\
+ "&load; &st; &sopb -R 10 -C 4; " \
+ /* Comm3 */ "&synch2 -K 6 -C 500; &if -m "/*"-E 5"*/" {C} {W} {D} {R} -v; &mfs "/*"-W 4 -M 500 -C 7000"*/"; &save;"\
+ /* Comm2 */ "&dch -C 500; &if -m {C} {W} {D} {R} -v; &mfs "/*"-W 4 -M 500 -C 7000"*/"; &save; "\
+ "&load";
+ // Based on ABC's &flow3
+ RTLIL::constpad["abc9.script.flow3"] = "+&scorr; &sweep;" \
+ "&if {C} {W} {D}; &save; &st; &syn2; &if {C} {W} {D} {R} -v; &save; &load;"\
+ "&st; &if {C} -g -K 6; &dch -f; &if {C} {W} {D} {R} -v; &save; &load;"\
+ "&st; &if {C} -g -K 6; &synch2; &if {C} {W} {D} {R} -v; &save; &load;"\
+ "&mfs";
}
-
- if (cleanup)
- {
- log("Removing temp directory.\n");
- remove_directory(tempdir_name);
- }
-
- log_pop();
-}
-
-struct Abc9Pass : public Pass {
- Abc9Pass() : Pass("abc9", "use ABC9 for technology mapping") { }
void help() YS_OVERRIDE
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" abc9 [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("This script pass performs a sequence of commands to facilitate the use of the ABC\n");
+ log("tool [1] for technology mapping of the current design to a target FPGA\n");
+ log("architecture. Only fully-selected modules are supported.\n");
+ log("\n");
+ log(" -run <from_label>:<to_label>\n");
+ log(" only run the commands between the labels (see below). an empty\n");
+ log(" from label is synonymous to 'begin', and empty to label is\n");
+ log(" synonymous to the end of the command list.\n");
log("\n");
log(" -exe <command>\n");
#ifdef ABCEXTERNAL
@@ -840,26 +113,17 @@ struct Abc9Pass : public Pass {
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("%s\n", fold_abc9_cmd(RTLIL::constpad.at("abc9.script.default").substr(1,std::string::npos)).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("%s\n", fold_abc9_cmd(RTLIL::constpad.at("abc9.script.default.fast").substr(1,std::string::npos)).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(" This also replaces 'dretime' with 'dretime; retime -o {D}' in the\n");
-// log(" default scripts above.\n");
log("\n");
// log(" -S <num>\n");
// log(" maximum number of LUT inputs shared.\n");
@@ -881,19 +145,10 @@ struct Abc9Pass : public Pass {
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 $_DFF_?_ and $_DFFE_??_ cells through ABC. modules with many\n");
-// log(" clock domains are automatically partitioned in clock domains and each\n");
-// log(" domain is passed through ABC independently.\n");
-// log("\n");
-// log(" -clk [!]<clock-signal-name>[,[!]<enable-signal-name>]\n");
-// log(" use only the specified clock domain. this is like -dff, but only FF\n");
-// log(" cells that belong to the specified clock domain are used.\n");
-// log("\n");
-// log(" -keepff\n");
-// 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(" -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(" -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");
@@ -902,409 +157,175 @@ struct Abc9Pass : public Pass {
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(" -markgroups\n");
- log(" set a 'abcgroup' attribute on all objects created by ABC. The value of\n");
- log(" this attribute is a unique integer for each ABC process started. This\n");
- log(" is useful for debugging the partitioning of clock domains.\n");
- log("\n");
log(" -box <file>\n");
- log(" pass this file with box library to ABC. Use with -lut.\n");
+ log(" pass this file with box library to ABC.\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("design as an XAIGER file with `write_xaiger' and then load that into ABC\n");
+ log("externally if 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");
+ help_script();
+ log("\n");
}
- void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
- {
- log_header(design, "Executing ABC9 pass (technology mapping using ABC9).\n");
- log_push();
- assign_map.clear();
+ std::stringstream exe_cmd;
+ bool dff_mode, cleanup;
-#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;
- bool fast_mode = false, dff_mode = false, keepff = false, cleanup = true;
- bool show_tempdir = false;
- bool nomfs = false;
- vector<int> lut_costs;
- markgroups = false;
+ void clear_flags() YS_OVERRIDE
+ {
+ exe_cmd.str("");
+ exe_cmd << "abc9_exe";
+ dff_mode = false;
+ cleanup = true;
+ }
-#if 0
- cleanup = false;
- show_tempdir = true;
-#endif
+ void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
+ {
+ std::string run_from, run_to;
+ clear_flags();
-#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
+ // get arguments from scratchpad first, then override by command arguments
+ dff_mode = design->scratchpad_get_bool("abc9.dff", dff_mode);
+ cleanup = !design->scratchpad_get_bool("abc9.nocleanup", !cleanup);
- size_t argidx;
- char pwd [PATH_MAX];
- if (!getcwd(pwd, sizeof(pwd))) {
- log_cmd_error("getcwd failed: %s\n", strerror(errno));
- log_abort();
+ if (design->scratchpad_get_bool("abc9.debug")) {
+ cleanup = false;
+ exe_cmd << " -showtmp";
}
+
+ size_t argidx;
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];
- rewrite_filename(script_file);
- if (!script_file.empty() && !is_absolute_path(script_file) && script_file[0] != '+')
- script_file = std::string(pwd) + "/" + script_file;
+ if ((arg == "-exe" || arg == "-script" || arg == "-D" ||
+ /* arg == "-S" || */ arg == "-lut" || arg == "-luts" ||
+ arg == "-box" || arg == "-W") &&
+ argidx+1 < args.size()) {
+ exe_cmd << " " << arg << " " << args[++argidx];
continue;
}
- if (arg == "-D" && argidx+1 < args.size()) {
- delay_target = "-D " + args[++argidx];
+ if (arg == "-fast" || /* arg == "-dff" || */
+ /* arg == "-nocleanup" || */ arg == "-showtmp") {
+ exe_cmd << " " << arg;
continue;
}
- //if (arg == "-S" && argidx+1 < args.size()) {
- // lutin_shared = "-S " + args[++argidx];
- // continue;
- //}
- if (arg == "-lut" && argidx+1 < args.size()) {
- string arg = args[++argidx];
- 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 {
- pos = arg.find_first_of('.');
- if (pos != string::npos) {
- lut_file = arg;
- rewrite_filename(lut_file);
- if (!lut_file.empty() && !is_absolute_path(lut_file))
- lut_file = std::string(pwd) + "/" + lut_file;
- }
- 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));
+ if (arg == "-dff") {
+ dff_mode = true;
+ exe_cmd << " " << arg;
continue;
}
- if (arg == "-luts" && argidx+1 < args.size()) {
- lut_costs.clear();
- for (auto &tok : split_tokens(args[++argidx], ",")) {
- 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");
- }
- continue;
- }
- if (arg == "-fast") {
- fast_mode = true;
- continue;
- }
- //if (arg == "-dff") {
- // dff_mode = true;
- // continue;
- //}
- //if (arg == "-clk" && argidx+1 < args.size()) {
- // clk_str = args[++argidx];
- // dff_mode = true;
- // continue;
- //}
- //if (arg == "-keepff") {
- // keepff = true;
- // continue;
- //}
if (arg == "-nocleanup") {
cleanup = false;
continue;
}
- if (arg == "-showtmp") {
- show_tempdir = true;
- continue;
- }
- if (arg == "-markgroups") {
- markgroups = 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;
+ if (arg == "-run" && argidx+1 < args.size()) {
+ size_t pos = args[argidx+1].find(':');
+ if (pos == std::string::npos)
+ break;
+ run_from = args[++argidx].substr(0, pos);
+ run_to = args[argidx].substr(pos+1);
continue;
}
break;
}
extra_args(args, argidx, design);
- // 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 = std::string(pwd) + "/" + box_file;
-
- dict<int,IdString> box_lookup;
- for (auto m : design->modules()) {
- auto it = m->attributes.find(ID(abc9_box_id));
- if (it == m->attributes.end())
- continue;
- if (m->name.begins_with("$paramod"))
- continue;
- auto id = it->second.as_int();
- auto r = box_lookup.insert(std::make_pair(id, m->name));
- if (!r.second)
- log_error("Module '%s' has the same abc9_box_id = %d value as '%s'.\n",
- log_id(m), id, log_id(r.first->second));
- log_assert(r.second);
-
- RTLIL::Wire *carry_in = nullptr, *carry_out = nullptr;
- for (auto p : m->ports) {
- auto w = m->wire(p);
- log_assert(w);
- if (w->attributes.count(ID(abc9_carry))) {
- if (w->port_input) {
- if (carry_in)
- log_error("Module '%s' contains more than one 'abc9_carry' input port.\n", log_id(m));
- carry_in = w;
- }
- else if (w->port_output) {
- if (carry_out)
- log_error("Module '%s' contains more than one 'abc9_carry' input port.\n", log_id(m));
- carry_out = w;
- }
- }
- }
- if (carry_in || carry_out) {
- if (carry_in && !carry_out)
- log_error("Module '%s' contains an 'abc9_carry' input port but no output port.\n", log_id(m));
- if (!carry_in && carry_out)
- log_error("Module '%s' contains an 'abc9_carry' output port but no input port.\n", log_id(m));
- // Make carry_in the last PI, and carry_out the last PO
- // since ABC requires it this way
- auto &ports = m->ports;
- for (auto it = ports.begin(); it != ports.end(); ) {
- RTLIL::Wire* w = m->wire(*it);
- log_assert(w);
- if (w == carry_in || w == carry_out) {
- it = ports.erase(it);
- continue;
- }
- if (w->port_id > carry_in->port_id)
- --w->port_id;
- if (w->port_id > carry_out->port_id)
- --w->port_id;
- log_assert(w->port_input || w->port_output);
- log_assert(ports[w->port_id-1] == w->name);
- ++it;
- }
- ports.push_back(carry_in->name);
- carry_in->port_id = ports.size();
- ports.push_back(carry_out->name);
- carry_out->port_id = ports.size();
- }
+ log_assert(design);
+ if (design->selected_modules().empty()) {
+ log_warning("No modules selected for ABC9 techmapping.\n");
+ return;
}
- for (auto mod : design->selected_modules())
- {
- if (mod->attributes.count(ID(abc9_box_id)))
- continue;
-
- if (mod->processes.size() > 0) {
- log("Skipping module %s as it contains processes.\n", log_id(mod));
- continue;
- }
-
- 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,
- delay_target, lutin_shared, fast_mode, show_tempdir,
- box_file, lut_file, wire_delay, box_lookup, nomfs);
- continue;
- }
-
- CellTypes ct(design);
-
- std::vector<RTLIL::Cell*> all_cells = mod->selected_cells();
- std::set<RTLIL::Cell*> unassigned_cells(all_cells.begin(), all_cells.end());
+ log_header(design, "Executing ABC9 pass.\n");
+ log_push();
- std::set<RTLIL::Cell*> expand_queue, next_expand_queue;
- std::set<RTLIL::Cell*> expand_queue_up, next_expand_queue_up;
- std::set<RTLIL::Cell*> expand_queue_down, next_expand_queue_down;
+ run_script(design, run_from, run_to);
- typedef tuple<bool, RTLIL::SigSpec, bool, RTLIL::SigSpec> clkdomain_t;
- std::map<clkdomain_t, std::vector<RTLIL::Cell*>> assigned_cells;
- std::map<RTLIL::Cell*, clkdomain_t> assigned_cells_reverse;
+ log_pop();
+ }
- std::map<RTLIL::Cell*, std::set<RTLIL::SigBit>> cell_to_bit, cell_to_bit_up, cell_to_bit_down;
- std::map<RTLIL::SigBit, std::set<RTLIL::Cell*>> bit_to_cell, bit_to_cell_up, bit_to_cell_down;
+ void script() YS_OVERRIDE
+ {
+ if (check_label("pre")) {
+ run("scc -set_attr abc9_scc_id {}");
+ if (help_mode)
+ run("abc9_ops -mark_scc -prep_xaiger [-dff]", "(option for -dff)");
+ else
+ run("abc9_ops -mark_scc -prep_xaiger" + std::string(dff_mode ? " -dff" : ""), "(option for -dff)");
+ run("select -set abc9_holes A:abc9_holes");
+ run("flatten -wb @abc9_holes");
+ run("techmap @abc9_holes");
+ if (dff_mode || help_mode)
+ run("abc9_ops -prep_dff", "(only if -dff)");
+ run("opt -purge @abc9_holes");
+ run("aigmap");
+ run("wbflip @abc9_holes");
+ }
- for (auto cell : all_cells)
- {
- clkdomain_t key;
+ if (check_label("map")) {
+ if (help_mode) {
+ run("foreach module in selection");
+ run(" write_xaiger -map <abc-temp-dir>/input.sym <abc-temp-dir>/input.xaig");
+ run(" abc9_exe -cwd <abc-temp-dir> [options]");
+ run(" read_aiger -xaiger -wideports -module_name <module-name>$abc9 -map <abc-temp-dir>/input.sym <abc-temp-dir>/output.aig");
+ run(" abc9_ops -reintegrate");
+ }
+ else {
+ auto selected_modules = active_design->selected_modules();
+ active_design->selection_stack.emplace_back(false);
- for (auto &conn : cell->connections())
- for (auto bit : conn.second) {
- bit = assign_map(bit);
- if (bit.wire != nullptr) {
- cell_to_bit[cell].insert(bit);
- bit_to_cell[bit].insert(cell);
- if (ct.cell_input(cell->type, conn.first)) {
- cell_to_bit_up[cell].insert(bit);
- bit_to_cell_down[bit].insert(cell);
- }
- if (ct.cell_output(cell->type, conn.first)) {
- cell_to_bit_down[cell].insert(bit);
- bit_to_cell_up[bit].insert(cell);
- }
+ for (auto mod : selected_modules) {
+ if (mod->processes.size() > 0) {
+ log("Skipping module %s as it contains processes.\n", log_id(mod));
+ continue;
}
- }
+ log_assert(!mod->attributes.count(ID(abc9_box_id)));
- if (cell->type.in(ID($_DFF_N_), ID($_DFF_P_)))
- {
- key = clkdomain_t(cell->type == ID($_DFF_P_), assign_map(cell->getPort(ID(C))), true, RTLIL::SigSpec());
- }
- else
- if (cell->type.in(ID($_DFFE_NN_), ID($_DFFE_NP_), ID($_DFFE_PN_), ID($_DFFE_PP_)))
- {
- bool this_clk_pol = cell->type.in(ID($_DFFE_PN_), ID($_DFFE_PP_));
- bool this_en_pol = cell->type.in(ID($_DFFE_NP_), ID($_DFFE_PP_));
- key = clkdomain_t(this_clk_pol, assign_map(cell->getPort(ID(C))), this_en_pol, assign_map(cell->getPort(ID(E))));
- }
- else
- continue;
+ log_push();
+ active_design->selection().select(mod);
- unassigned_cells.erase(cell);
- expand_queue.insert(cell);
- expand_queue_up.insert(cell);
- expand_queue_down.insert(cell);
+ if (!active_design->selected_whole_module(mod))
+ log_error("Can't handle partially selected module %s!\n", log_id(mod));
- assigned_cells[key].push_back(cell);
- assigned_cells_reverse[cell] = key;
- }
-
- while (!expand_queue_up.empty() || !expand_queue_down.empty())
- {
- if (!expand_queue_up.empty())
- {
- RTLIL::Cell *cell = *expand_queue_up.begin();
- clkdomain_t key = assigned_cells_reverse.at(cell);
- expand_queue_up.erase(cell);
+ std::string tempdir_name = "/tmp/yosys-abc-XXXXXX";
+ if (!cleanup)
+ tempdir_name[0] = tempdir_name[4] = '_';
+ tempdir_name = make_temp_dir(tempdir_name);
- for (auto bit : cell_to_bit_up[cell])
- for (auto c : bit_to_cell_up[bit])
- if (unassigned_cells.count(c)) {
- unassigned_cells.erase(c);
- next_expand_queue_up.insert(c);
- assigned_cells[key].push_back(c);
- assigned_cells_reverse[c] = key;
- expand_queue.insert(c);
- }
- }
+ run(stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str()));
- if (!expand_queue_down.empty())
- {
- RTLIL::Cell *cell = *expand_queue_down.begin();
- clkdomain_t key = assigned_cells_reverse.at(cell);
- expand_queue_down.erase(cell);
-
- for (auto bit : cell_to_bit_down[cell])
- for (auto c : bit_to_cell_down[bit])
- if (unassigned_cells.count(c)) {
- unassigned_cells.erase(c);
- next_expand_queue_up.insert(c);
- assigned_cells[key].push_back(c);
- assigned_cells_reverse[c] = key;
- expand_queue.insert(c);
- }
- }
+ int num_outputs = active_design->scratchpad_get_int("write_xaiger.num_outputs");
- if (expand_queue_up.empty() && expand_queue_down.empty()) {
- expand_queue_up.swap(next_expand_queue_up);
- expand_queue_down.swap(next_expand_queue_down);
- }
- }
+ log("Extracted %d AND gates and %d wires from module `%s' to a netlist network with %d inputs and %d outputs.\n",
+ active_design->scratchpad_get_int("write_xaiger.num_ands"),
+ active_design->scratchpad_get_int("write_xaiger.num_wires"),
+ log_id(mod),
+ active_design->scratchpad_get_int("write_xaiger.num_inputs"),
+ num_outputs);
+ if (num_outputs) {
+ run(stringf("%s -cwd %s", exe_cmd.str().c_str(), tempdir_name.c_str()));
+ run(stringf("read_aiger -xaiger -wideports -module_name %s$abc9 -map %s/input.sym %s/output.aig", log_id(mod), tempdir_name.c_str(), tempdir_name.c_str()));
+ run("abc9_ops -reintegrate");
+ }
+ else
+ log("Don't call ABC as there is nothing to map.\n");
- while (!expand_queue.empty())
- {
- RTLIL::Cell *cell = *expand_queue.begin();
- clkdomain_t key = assigned_cells_reverse.at(cell);
- expand_queue.erase(cell);
+ if (cleanup) {
+ log("Removing temp directory.\n");
+ remove_directory(tempdir_name);
+ }
- for (auto bit : cell_to_bit.at(cell)) {
- for (auto c : bit_to_cell[bit])
- if (unassigned_cells.count(c)) {
- unassigned_cells.erase(c);
- next_expand_queue.insert(c);
- assigned_cells[key].push_back(c);
- assigned_cells_reverse[c] = key;
- }
- bit_to_cell[bit].clear();
+ active_design->selection().selected_modules.clear();
+ log_pop();
}
- if (expand_queue.empty())
- expand_queue.swap(next_expand_queue);
- }
-
- clkdomain_t key(true, RTLIL::SigSpec(), true, RTLIL::SigSpec());
- for (auto cell : unassigned_cells) {
- assigned_cells[key].push_back(cell);
- assigned_cells_reverse[cell] = key;
- }
-
- log_header(design, "Summary of detected clock domains:\n");
- for (auto &it : assigned_cells)
- log(" %d cells in clk=%s%s, en=%s%s\n", GetSize(it.second),
- std::get<0>(it.first) ? "" : "!", log_signal(std::get<1>(it.first)),
- std::get<2>(it.first) ? "" : "!", log_signal(std::get<3>(it.first)));
-
- for (auto &it : assigned_cells) {
- clk_polarity = std::get<0>(it.first);
- clk_sig = assign_map(std::get<1>(it.first));
- en_polarity = std::get<2>(it.first);
- en_sig = assign_map(std::get<3>(it.first));
- abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, !clk_sig.empty(), "$",
- keepff, delay_target, lutin_shared, fast_mode, show_tempdir,
- box_file, lut_file, wire_delay, box_lookup, nomfs);
- assign_map.set(mod);
+ active_design->selection_stack.pop_back();
}
}
-
- assign_map.clear();
-
- log_pop();
}
} Abc9Pass;
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-19 19:51:47 +0000