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-rw-r--r--frontends/aiger/aigerparse.cc161
1 files changed, 46 insertions, 115 deletions
diff --git a/frontends/aiger/aigerparse.cc b/frontends/aiger/aigerparse.cc
index f937ae1f0..355429646 100644
--- a/frontends/aiger/aigerparse.cc
+++ b/frontends/aiger/aigerparse.cc
@@ -382,21 +382,6 @@ void AigerReader::parse_xaiger()
if (f.peek() == '\n')
f.get();
- 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("$paramod"))
- continue;
- auto id = it->second.as_int();
- auto r = box_lookup.insert(std::make_pair(id, m->name));
- if (!r.second)
- log_error("Module '%s' has the same abc9_box_id = %d value as '%s'.\n",
- log_id(m), id, log_id(r.first->second));
- log_assert(r.second);
- }
-
// Parse footer (symbol table, comments, etc.)
std::string s;
for (int c = f.get(); c != EOF; c = f.get()) {
@@ -467,11 +452,14 @@ void AigerReader::parse_xaiger()
uint32_t boxNum = parse_xaiger_literal(f);
log_debug("boxNum = %u\n", boxNum);
for (unsigned i = 0; i < boxNum; i++) {
- f.ignore(2*sizeof(uint32_t));
+ uint32_t boxInputs = parse_xaiger_literal(f);
+ uint32_t boxOutputs = parse_xaiger_literal(f);
uint32_t boxUniqueId = parse_xaiger_literal(f);
log_assert(boxUniqueId > 0);
uint32_t oldBoxNum = parse_xaiger_literal(f);
- RTLIL::Cell* cell = module->addCell(stringf("$box%u", oldBoxNum), box_lookup.at(boxUniqueId));
+ RTLIL::Cell* cell = module->addCell(stringf("$box%u", oldBoxNum), stringf("$__boxid%u", boxUniqueId));
+ cell->setPort("\\i", SigSpec(State::S0, boxInputs));
+ cell->setPort("\\o", SigSpec(State::S0, boxOutputs));
boxes.emplace_back(cell);
}
}
@@ -501,7 +489,8 @@ void AigerReader::parse_aiger_ascii()
if (!(f >> l1))
log_error("Line %u cannot be interpreted as an input!\n", line_count);
log_debug2("%d is an input\n", l1);
- RTLIL::Wire *wire = module->addWire(stringf("$i%0*d", digits, l1));
+ log_assert(!(l1 & 1)); // Inputs can't be inverted
+ RTLIL::Wire *wire = module->addWire(stringf("$i%0*d", digits, i));
wire->port_input = true;
module->connect(createWireIfNotExists(module, l1 << 1), wire);
inputs.push_back(wire);
@@ -576,6 +565,8 @@ void AigerReader::parse_aiger_ascii()
wire->port_output = true;
bad_properties.push_back(wire);
}
+ if (B > 0)
+ std::getline(f, line); // Ignore up to start of next line
// TODO: Parse invariant constraints
for (unsigned i = 0; i < C; ++i, ++line_count)
@@ -729,84 +720,46 @@ void AigerReader::parse_aiger_binary()
void AigerReader::post_process()
{
- dict<IdString, std::vector<IdString>> box_ports;
- unsigned ci_count = 0, co_count = 0, flop_count = 0;
+ unsigned ci_count = 0, co_count = 0;
for (auto cell : boxes) {
- RTLIL::Module* box_module = design->module(cell->type);
- log_assert(box_module);
-
- auto r = box_ports.insert(cell->type);
- if (r.second) {
- // Make carry in the last PI, and carry out the last PO
- // since ABC requires it this way
- IdString carry_in, carry_out;
- for (const auto &port_name : box_module->ports) {
- auto w = box_module->wire(port_name);
- log_assert(w);
- if (w->get_bool_attribute("\\abc9_carry")) {
- if (w->port_input)
- carry_in = port_name;
- if (w->port_output)
- carry_out = port_name;
- }
- else
- r.first->second.push_back(port_name);
- }
- if (carry_in != IdString()) {
- log_assert(carry_out != IdString());
- r.first->second.push_back(carry_in);
- r.first->second.push_back(carry_out);
- }
+ for (auto &bit : cell->connections_.at("\\i")) {
+ log_assert(bit == State::S0);
+ log_assert(co_count < outputs.size());
+ bit = outputs[co_count++];
+ log_assert(bit.wire && GetSize(bit.wire) == 1);
+ log_assert(bit.wire->port_output);
+ bit.wire->port_output = false;
}
-
- for (auto port_name : box_ports.at(cell->type)) {
- RTLIL::Wire* port = box_module->wire(port_name);
- log_assert(port);
- RTLIL::SigSpec rhs;
- for (int i = 0; i < GetSize(port); i++) {
- RTLIL::Wire* wire = nullptr;
- if (port->port_input) {
- log_assert(co_count < outputs.size());
- wire = outputs[co_count++];
- log_assert(wire);
- log_assert(wire->port_output);
- wire->port_output = false;
- }
- if (port->port_output) {
- log_assert((piNum + ci_count) < inputs.size());
- wire = inputs[piNum + ci_count++];
- log_assert(wire);
- log_assert(wire->port_input);
- wire->port_input = false;
- }
- rhs.append(wire);
- }
- cell->setPort(port_name, rhs);
+ for (auto &bit : cell->connections_.at("\\o")) {
+ log_assert(bit == State::S0);
+ log_assert((piNum + ci_count) < inputs.size());
+ bit = inputs[piNum + ci_count++];
+ log_assert(bit.wire && GetSize(bit.wire) == 1);
+ log_assert(bit.wire->port_input);
+ bit.wire->port_input = false;
}
+ }
- if (box_module->attributes.count("\\abc9_flop")) {
- log_assert(co_count < outputs.size());
- Wire *wire = outputs[co_count++];
- log_assert(wire);
- log_assert(wire->port_output);
- wire->port_output = false;
-
- RTLIL::Wire *d = outputs[outputs.size() - flopNum + flop_count];
- log_assert(d);
- log_assert(d->port_output);
- d->port_output = false;
-
- RTLIL::Wire *q = inputs[piNum - flopNum + flop_count];
- log_assert(q);
- log_assert(q->port_input);
- q->port_input = false;
-
- auto ff = module->addCell(NEW_ID, "$__ABC9_FF_");
- ff->setPort("\\D", d);
- ff->setPort("\\Q", q);
- flop_count++;
- continue;
- }
+ for (uint32_t i = 0; i < flopNum; i++) {
+ log_assert(co_count < outputs.size());
+ Wire *wire = outputs[co_count++];
+ log_assert(wire);
+ log_assert(wire->port_output);
+ wire->port_output = false;
+
+ RTLIL::Wire *d = outputs[outputs.size() - flopNum + i];
+ log_assert(d);
+ log_assert(d->port_output);
+ d->port_output = false;
+
+ RTLIL::Wire *q = inputs[piNum - flopNum + i];
+ log_assert(q);
+ log_assert(q->port_input);
+ q->port_input = false;
+
+ auto ff = module->addCell(NEW_ID, "$__ABC9_FF_");
+ ff->setPort("\\D", d);
+ ff->setPort("\\Q", q);
}
dict<RTLIL::IdString, int> wideports_cache;
@@ -856,10 +809,6 @@ void AigerReader::post_process()
RTLIL::Wire* wire = outputs[variable + co_count];
log_assert(wire);
log_assert(wire->port_output);
- if (escaped_s == "$__dummy__") {
- wire->port_output = false;
- continue;
- }
log_debug("Renaming output %s", log_id(wire));
if (index == 0) {
@@ -897,26 +846,8 @@ void AigerReader::post_process()
}
else if (type == "box") {
RTLIL::Cell* cell = module->cell(stringf("$box%d", variable));
- if (cell) { // ABC could have optimised this box away
+ if (cell) // ABC could have optimised this box away
module->rename(cell, escaped_s);
- for (const auto &i : cell->connections()) {
- RTLIL::IdString port_name = i.first;
- RTLIL::SigSpec rhs = i.second;
- int index = 0;
- for (auto bit : rhs.bits()) {
- RTLIL::Wire* wire = bit.wire;
- RTLIL::IdString escaped_s = RTLIL::escape_id(stringf("%s.%s", log_id(cell), log_id(port_name)));
- if (index == 0)
- module->rename(wire, escaped_s);
- else if (index > 0) {
- module->rename(wire, stringf("%s[%d]", escaped_s.c_str(), index));
- if (wideports)
- wideports_cache[escaped_s] = std::max(wideports_cache[escaped_s], index);
- }
- index++;
- }
- }
- }
}
else
log_error("Symbol type '%s' not recognised.\n", type.c_str());
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 07:09:26 +0000