diff options
Diffstat (limited to 'passes/techmap/abc9.cc')
| -rw-r--r-- | passes/techmap/abc9.cc | 959 |
1 files changed, 81 insertions, 878 deletions
diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc index f82511407..d54891167 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 @@ -18,719 +18,21 @@ * */ -// [[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/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 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 handle_loops(RTLIL::Design *design, RTLIL::Module *module) -{ - Pass::call(design, "scc -set_attr abc9_scc_id {} % w:*"); - - // 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; -} +#define XC7_WIRE_DELAY 300 // Number with which ABC will map a 6-input gate + // to one LUT6 (instead of a LUT5 + LUT2) -std::string fold_abc9_cmd(std::string str) +struct Abc9Pass : public ScriptPass { - std::string token, new_str = " "; - int char_counter = 10; + Abc9Pass() : ScriptPass("abc9", "use ABC9 for technology mapping") { } - 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, - bool cleanup, vector<int> lut_costs, bool dff_mode, 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 -) -{ - map_autoidx = autoidx++; - - 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 %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); - - log_push(); - - handle_loops(design, module); - - Pass::call(design, "aigmap -select"); - - Pass::call(design, stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str())); - - 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)); - - dict<IdString, bool> abc9_box; - vector<RTLIL::Cell*> boxes; - for (auto it = module->cells_.begin(); it != module->cells_.end(); ) { - auto cell = it->second; - if (cell->type.in(ID($_AND_), ID($_NOT_), ID($__ABC9_FF_))) { - it = module->cells_.erase(it); - continue; - } - ++it; - RTLIL::Module* box_module = design->module(cell->type); - auto jt = abc9_box.find(cell->type); - if (jt == abc9_box.end()) - jt = abc9_box.insert(std::make_pair(cell->type, box_module && box_module->attributes.count(ID(abc9_box_id)))).first; - if (jt->second) { - if (box_module->get_bool_attribute("\\abc9_flop")) { - if (dff_mode) - boxes.emplace_back(cell); - else - box_module->set_bool_attribute("\\abc9_keep", false); - } - else - boxes.emplace_back(cell); - } - } - - dict<SigBit, pool<IdString>> bit_drivers, bit_users; - TopoSort<IdString, RTLIL::sort_by_id_str> toposort; - dict<RTLIL::Cell*,RTLIL::Cell*> not2drivers; - dict<SigBit, std::vector<RTLIL::Cell*>> bit2sinks; - - std::map<IdString, int> cell_stats; - for (auto mapped_cell : mapped_mod->cells()) - { - toposort.node(mapped_cell->name); - - RTLIL::Cell *cell = nullptr; - if (mapped_cell->type == ID($_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); - } - - if (existing_cell) { - cell->parameters = existing_cell->parameters; - cell->attributes = existing_cell->attributes; - } - else { - cell->parameters = mapped_cell->parameters; - cell->attributes = mapped_cell->attributes; - } - - RTLIL::Module* box_module = design->module(mapped_cell->type); - auto abc9_flop = box_module && box_module->get_bool_attribute("\\abc9_flop"); - for (auto &conn : mapped_cell->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 (!abc9_flop) { - if (cell->input(conn.first)) { - for (auto i : newsig) - bit2sinks[i].push_back(cell); - for (auto i : conn.second) - bit_users[i].insert(mapped_cell->name); - } - if (cell->output(conn.first)) - for (auto i : conn.second) - bit_drivers[i].insert(mapped_cell->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 - //{ - // log("Don't call ABC as there is nothing to map.\n"); - //} - - 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---| @@ -759,17 +61,20 @@ struct Abc9Pass : public Pass { 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).c_str()); + // FIXME + //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()); + // FIXME + //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()); + // FIXME + //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"); @@ -820,35 +125,25 @@ struct Abc9Pass : public Pass { 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(); -#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, cleanup = true; - bool show_tempdir = false; - bool nomfs = false; - vector<int> lut_costs; + std::stringstream map_cmd; + bool dff_mode, cleanup; -#if 0 - cleanup = false; - show_tempdir = true; -#endif + void clear_flags() YS_OVERRIDE + { + map_cmd.str(""); + map_cmd << "abc9_map"; + dff_mode = false; + cleanup = true; + } -#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 + void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE + { + std::string run_from, run_to; + clear_flags(); // get arguments from scratchpad first, then override by command arguments std::string lut_arg, luts_arg; @@ -870,42 +165,19 @@ struct Abc9Pass : public Pass { 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]; - rewrite_filename(script_file); - if (!script_file.empty() && !is_absolute_path(script_file) && script_file[0] != '+') - script_file = std::string(pwd) + "/" + script_file; - 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]; + if ((arg == "-exe" || arg == "-script" || arg == "-D" || + /* arg == "-S" || */ arg == "-lut" || arg == "-luts" || + arg == "-box" || arg == "-W") && + argidx+1 < args.size()) { + map_cmd << " " << arg << " " << args[++argidx]; continue; } - if (arg == "-luts" && argidx+1 < args.size()) { - luts_arg = args[++argidx]; - continue; - } - if (arg == "-fast") { - fast_mode = true; + if (arg == "-fast" || /* arg == "-dff" || */ + /* arg == "-nocleanup" || */ arg == "-showtmp" || + arg == "-nomfs") { + map_cmd << " " << arg; continue; } if (arg == "-dff") { @@ -916,86 +188,40 @@ struct Abc9Pass : public Pass { cleanup = false; 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; - } 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"); - } - } + log_header(design, "Executing ABC9 pass.\n"); - // ABC expects a box file for XAIG - if (box_file.empty()) - box_file = "+/dummy.box"; + run_script(design, run_from, run_to); + } - rewrite_filename(box_file); - if (!box_file.empty() && !is_absolute_path(box_file) && box_file[0] != '+') - box_file = std::string(pwd) + "/" + box_file; + void script() YS_OVERRIDE + { + run("scc -set_attr abc9_scc_id {}"); + if (help_mode) + run("abc9_ops -break_scc -prep_holes [-dff]", "(option for -dff)"); + else + run("abc9_ops -break_scc -prep_holes" + 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"); + run("aigmap"); + if (dff_mode) + run("abc9_ops -prep_dff"); + run("opt -purge @abc9_holes"); + run("wbflip @abc9_holes"); + + auto selected_modules = active_design->selected_modules(); + active_design->selection_stack.emplace_back(false); + + for (auto mod : selected_modules) { + if (mod->get_blackbox_attribute()) + continue; - SigMap assign_map; - CellTypes ct(design); - for (auto module : design->selected_modules()) - { - if (module->processes.size() > 0) { - log("Skipping module %s as it contains processes.\n", log_id(module)); + if (mod->processes.size() > 0) { + log("Skipping module %s as it contains processes.\n", log_id(mod)); continue; } log_assert(!module->attributes.count(ID(abc9_box_id))); @@ -1003,53 +229,30 @@ struct Abc9Pass : public Pass { if (!design->selected_whole_module(module)) log_error("Can't handle partially selected module %s!\n", log_id(module)); - assign_map.set(module); - - typedef SigSpec clkdomain_t; - dict<clkdomain_t, int> clk_to_mergeability; - - if (dff_mode) - for (auto cell : module->cells()) { - if (cell->type != "$__ABC9_FF_") - continue; + active_design->selection().select(mod); - Wire *abc9_clock_wire = module->wire(stringf("%s.clock", cell->name.c_str())); - if (abc9_clock_wire == NULL) - log_error("'%s.clock' is not a wire present in module '%s'.\n", cell->name.c_str(), log_id(module)); - SigSpec abc9_clock = assign_map(abc9_clock_wire); + std::string tempdir_name = "/tmp/yosys-abc-XXXXXX"; + if (!cleanup) + tempdir_name[0] = tempdir_name[4] = '_'; + tempdir_name = make_temp_dir(tempdir_name); - clkdomain_t key(abc9_clock); + 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>"); - auto r = clk_to_mergeability.insert(std::make_pair(abc9_clock, clk_to_mergeability.size() + 1)); - auto r2 YS_ATTRIBUTE(unused) = cell->attributes.insert(std::make_pair(ID(abc9_mergeability), r.first->second)); - log_assert(r2.second); - - Wire *abc9_init_wire = module->wire(stringf("%s.init", cell->name.c_str())); - if (abc9_init_wire == NULL) - log_error("'%s.init' is not a wire present in module '%s'.\n", cell->name.c_str(), log_id(module)); - log_assert(GetSize(abc9_init_wire) == 1); - SigSpec abc9_init = assign_map(abc9_init_wire); - if (!abc9_init.is_fully_const()) - log_error("'%s.init' is not a constant wire present in module '%s'.\n", cell->name.c_str(), log_id(module)); - r2 = cell->attributes.insert(std::make_pair(ID(abc9_init), abc9_init.as_const())); - log_assert(r2.second); - } - else - for (auto cell : module->cells()) { - auto inst_module = design->module(cell->type); - if (!inst_module || !inst_module->get_bool_attribute("\\abc9_flop")) - continue; - cell->set_bool_attribute("\\abc9_keep"); - } + if (cleanup) + { + log("Removing temp directory.\n"); + remove_directory(tempdir_name); + } - design->selected_active_module = module->name.str(); - abc9_module(design, module, script_file, exe_file, cleanup, lut_costs, dff_mode, - delay_target, lutin_shared, fast_mode, show_tempdir, - box_file, lut_file, wire_delay, nomfs); - design->selected_active_module.clear(); + active_design->selection().selected_modules.clear(); } - log_pop(); + active_design->selection_stack.pop_back(); + + run("abc9_ops -unbreak_scc"); } } Abc9Pass; |