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-rw-r--r--passes/techmap/abc9.cc142
1 files changed, 91 insertions, 51 deletions
diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index 84cb2c04f..919c4ce53 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -85,7 +85,7 @@ void handle_loops(RTLIL::Design *design,
// cell in the component, and select (and mark) all its output
// wires
pool<RTLIL::Const> ids_seen;
- for (auto cell : module->cells()) {
+ for (auto cell : module->selected_cells()) {
auto it = cell->attributes.find(ID(abc_scc_id));
if (it != cell->attributes.end()) {
auto r = ids_seen.insert(it->second);
@@ -269,7 +269,7 @@ struct abc_output_filter
};
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 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,
@@ -309,8 +309,8 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
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());
+ //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)
@@ -383,7 +383,7 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
fprintf(f, "%s\n", abc_script.c_str());
fclose(f);
- if (dff_mode || !clk_str.empty())
+ 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");
@@ -420,6 +420,9 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
//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);
+#if 0
+ Pass::call(design, stringf("write_verilog -noexpr -norename %s/before.v", tempdir_name.c_str()));
+#endif
Pass::call(design, stringf("write_xaiger -map %s/input.sym %s/input.xaig", tempdir_name.c_str(), tempdir_name.c_str()));
std::string buffer;
@@ -528,6 +531,12 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
for (int i = 0; i < GetSize(w); i++)
output_bits.insert({wire, i});
}
+
+ auto jt = w->attributes.find("\\init");
+ if (jt != w->attributes.end()) {
+ auto r = remap_wire->attributes.insert(std::make_pair("\\init", jt->second));
+ log_assert(r.second);
+ }
}
for (auto &it : module->connections_) {
@@ -541,8 +550,7 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
dict<IdString, bool> abc_box;
vector<RTLIL::Cell*> boxes;
- for (const auto &it : module->cells_) {
- auto cell = it.second;
+ for (auto cell : module->selected_cells()) {
if (cell->type.in(ID($_AND_), ID($_NOT_))) {
module->remove(cell);
continue;
@@ -562,25 +570,23 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
dict<SigBit, std::vector<RTLIL::Cell*>> bit2sinks;
std::map<IdString, int> cell_stats;
- for (auto c : mapped_mod->cells())
+ for (auto mapped_cell : mapped_mod->cells())
{
- toposort.node(c->name);
+ toposort.node(mapped_cell->name);
RTLIL::Cell *cell = nullptr;
- if (c->type == ID($_NOT_)) {
- RTLIL::SigBit a_bit = c->getPort(ID::A);
- RTLIL::SigBit y_bit = c->getPort(ID::Y);
- bit_users[a_bit].insert(c->name);
- bit_drivers[y_bit].insert(c->name);
+ if (mapped_cell->type == ID($_NOT_)) {
+ RTLIL::SigBit a_bit = mapped_cell->getPort(ID::A);
+ RTLIL::SigBit y_bit = mapped_cell->getPort(ID::Y);
if (!a_bit.wire) {
- c->setPort(ID::Y, module->addWire(NEW_ID));
+ 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;
+ else {
+ RTLIL::Cell* driving_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,
@@ -592,46 +598,46 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
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);
+ driving_lut = mapped_mod->cell(driver_name);
}
- if (!driver_lut) {
+ if (!driving_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$lut", c->name.c_str())),
+ cell = module->addLut(remap_name(stringf("%s$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($lut)]++;
+ bit_users[a_bit].insert(mapped_cell->name);
+ bit_drivers[y_bit].insert(mapped_cell->name);
}
else
- not2drivers[c] = driver_lut;
+ not2drivers[mapped_cell] = driving_lut;
continue;
}
- else
- log_abort();
if (cell && markgroups) cell->attributes[ID(abcgroup)] = map_autoidx;
continue;
}
- cell_stats[c->type]++;
+ cell_stats[mapped_cell->type]++;
RTLIL::Cell *existing_cell = nullptr;
- if (c->type == ID($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));
+ if (mapped_cell->type == ID($lut)) {
+ if (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);
- if (markgroups) c->attributes[ID(abcgroup)] = map_autoidx;
+ if (markgroups) mapped_cell->attributes[ID(abcgroup)] = map_autoidx;
log_abort();
continue;
}
- cell = module->addCell(remap_name(c->name), c->type);
+ cell = module->addCell(remap_name(mapped_cell->name), mapped_cell->type);
}
else {
- existing_cell = module->cell(c->name);
+ existing_cell = module->cell(mapped_cell->name);
log_assert(existing_cell);
- cell = module->addCell(remap_name(c->name), c->type);
+ cell = module->addCell(remap_name(mapped_cell->name), mapped_cell->type);
module->swap_names(cell, existing_cell);
}
@@ -641,10 +647,11 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
cell->attributes = existing_cell->attributes;
}
else {
- cell->parameters = c->parameters;
- cell->attributes = c->attributes;
+ cell->parameters = mapped_cell->parameters;
+ cell->attributes = mapped_cell->attributes;
}
- for (auto &conn : c->connections()) {
+
+ for (auto &conn : mapped_cell->connections()) {
RTLIL::SigSpec newsig;
for (auto c : conn.second.chunks()) {
if (c.width == 0)
@@ -660,11 +667,11 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
for (auto i : newsig)
bit2sinks[i].push_back(cell);
for (auto i : conn.second)
- bit_users[i].insert(c->name);
+ bit_users[i].insert(mapped_cell->name);
}
if (cell->output(conn.first))
for (auto i : conn.second)
- bit_drivers[i].insert(c->name);
+ bit_drivers[i].insert(mapped_cell->name);
}
}
@@ -690,29 +697,27 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
}
for (auto &it : cell_stats)
- log("ABC RESULTS: %15s cells: %8d\n", it.first.c_str(), it.second);
+ log("ABC RESULTS: %15s cells: %8d\n", log_id(it.first), it.second);
int in_wires = 0, out_wires = 0;
// Stitch in mapped_mod's inputs/outputs into module
- for (auto &it : mapped_mod->wires_) {
- RTLIL::Wire *w = it.second;
- if (!w->port_input && !w->port_output)
- continue;
- RTLIL::Wire *wire = module->wire(w->name);
+ for (auto port_name : mapped_mod->ports) {
+ RTLIL::Wire *port = mapped_mod->wire(port_name);
+ log_assert(port);
+ RTLIL::Wire *wire = module->wire(port->name);
log_assert(wire);
- RTLIL::Wire *remap_wire = module->wire(remap_name(w->name));
+ RTLIL::Wire *remap_wire = module->wire(remap_name(port->name));
RTLIL::SigSpec signal = RTLIL::SigSpec(wire, 0, GetSize(remap_wire));
log_assert(GetSize(signal) >= GetSize(remap_wire));
- log_assert(w->port_input || w->port_output);
RTLIL::SigSig conn;
- if (w->port_input) {
+ if (port->port_input) {
conn.first = remap_wire;
conn.second = signal;
in_wires++;
module->connect(conn);
}
- if (w->port_output) {
+ if (port->port_output) {
conn.first = signal;
conn.second = remap_wire;
out_wires++;
@@ -725,7 +730,21 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
for (auto driver_cell : bit_drivers.at(it.first))
for (auto user_cell : it.second)
toposort.edge(driver_cell, user_cell);
+#if 0
+ toposort.analyze_loops = true;
+#endif
bool no_loops YS_ATTRIBUTE(unused) = toposort.sort();
+#if 0
+ unsigned i = 0;
+ for (auto &it : toposort.loops) {
+ log(" loop %d\n", i++);
+ for (auto cell_name : it) {
+ auto cell = mapped_mod->cell(cell_name);
+ log_assert(cell);
+ log("\t%s (%s @ %s)\n", log_id(cell), log_id(cell->type), cell->get_src_attribute().c_str());
+ }
+ }
+#endif
log_assert(no_loops);
for (auto ii = toposort.sorted.rbegin(); ii != toposort.sorted.rend(); ii++) {
@@ -1026,7 +1045,7 @@ struct Abc9Pass : public Pass {
fast_mode = true;
continue;
}
- //if (arg == "-dff") {
+ //if (arg == "-retime") {
// dff_mode = true;
// continue;
//}
@@ -1066,6 +1085,9 @@ struct Abc9Pass : public Pass {
}
extra_args(args, argidx, design);
+ if (lut_costs.empty() && lut_file.empty())
+ log_cmd_error("abc9 must be called with '-lut' or '-luts'\n");
+
dict<int,IdString> box_lookup;
dict<IdString,pool<IdString>> scc_break_inputs;
for (auto m : design->modules()) {
@@ -1145,9 +1167,14 @@ struct Abc9Pass : public Pass {
assign_map.set(mod);
if (!dff_mode || !clk_str.empty()) {
- abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, dff_mode, clk_str, keepff,
+ design->selection_stack.emplace_back(false);
+ RTLIL::Selection& sel = design->selection_stack.back();
+ sel.select(mod);
+
+ abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, false, clk_str, keepff,
delay_target, lutin_shared, fast_mode, show_tempdir,
box_file, lut_file, wire_delay, box_lookup, scc_break_inputs);
+ design->selection_stack.pop_back();
continue;
}
@@ -1167,8 +1194,7 @@ struct Abc9Pass : public Pass {
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;
- for (auto cell : all_cells)
- {
+ for (auto cell : all_cells) {
clkdomain_t key;
for (auto &conn : cell->connections())
@@ -1202,6 +1228,7 @@ struct Abc9Pass : public Pass {
else
continue;
+
unassigned_cells.erase(cell);
expand_queue.insert(cell);
expand_queue_up.insert(cell);
@@ -1286,16 +1313,29 @@ struct Abc9Pass : public Pass {
std::get<0>(it.first) ? "" : "!", log_signal(std::get<1>(it.first)),
std::get<2>(it.first) ? "" : "!", log_signal(std::get<3>(it.first)));
+ design->selection_stack.emplace_back(false);
+
for (auto &it : assigned_cells) {
+ // FIXME: abc9_module calls below can delete cells,
+ // leaving a dangling pointer here...
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));
+
+ pool<RTLIL::IdString> assigned_names;
+ for (auto i : it.second)
+ assigned_names.insert(i->name);
+ RTLIL::Selection& sel = design->selection_stack.back();
+ sel.selected_members[mod->name] = std::move(assigned_names);
+
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, scc_break_inputs);
assign_map.set(mod);
}
+
+ design->selection_stack.pop_back();
}
assign_map.clear();
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-09 01:35:34 +0000