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write_aiger2: Treat inout ports as output ports

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With the previous bufnorm implementation inout ports were not supported
at all, so this didn't matter, but with the new bufnorm implementation
they need to be treated as output ports.
This commit is contained in:
Jannis Harder 2025-09-16 14:01:15 +02:00
parent 5f79a6e868
commit 4918f37be3
1 changed files with 15 additions and 20 deletions
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35
backends/aiger2/aiger.cc
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@ -566,7 +566,7 @@ struct Index {
} }
Lit ret; Lit ret;
if (!bit.wire->port_input) { if (!bit.wire->port_input || bit.wire->port_output) {
// an output of a cell // an output of a cell
Cell *driver = bit.wire->driverCell(); Cell *driver = bit.wire->driverCell();
@ -618,7 +618,7 @@ struct Index {
if (!cursor) { if (!cursor) {
log_assert(bit.wire->module == top); log_assert(bit.wire->module == top);
log_assert(bit.wire->port_input); log_assert(bit.wire->port_input && !bit.wire->port_output);
return lits[top_minfo->windices[bit.wire] + bit.offset]; return lits[top_minfo->windices[bit.wire] + bit.offset];
} else { } else {
log_assert(bit.wire->module == cursor->leaf_module(*this)); log_assert(bit.wire->module == cursor->leaf_module(*this));
@ -723,7 +723,7 @@ struct AigerWriter : Index<AigerWriter, unsigned int, 0, 1> {
for (auto id : top->ports) { for (auto id : top->ports) {
Wire *w = top->wire(id); Wire *w = top->wire(id);
log_assert(w); log_assert(w);
if (w->port_input) if (w->port_input && !w->port_output)
for (int i = 0; i < w->width; i++) { for (int i = 0; i < w->width; i++) {
pi_literal(SigBit(w, i)) = lit_counter; pi_literal(SigBit(w, i)) = lit_counter;
inputs.push_back(SigBit(w, i)); inputs.push_back(SigBit(w, i));
@ -828,7 +828,7 @@ struct XAigerAnalysis : Index<XAigerAnalysis, int, 0, 0> {
{ {
log_assert(cursor.is_top()); // TOOD: fix analyzer to work with hierarchy log_assert(cursor.is_top()); // TOOD: fix analyzer to work with hierarchy
if (bit.wire->port_input) if (bit.wire->port_input && !bit.wire->port_output)
return false; return false;
Cell *driver = bit.wire->driverCell(); Cell *driver = bit.wire->driverCell();
@ -838,7 +838,7 @@ struct XAigerAnalysis : Index<XAigerAnalysis, int, 0, 0> {
int max = 1; int max = 1;
for (auto wire : mod->wires()) for (auto wire : mod->wires())
if (wire->port_input) if (wire->port_input && !wire->port_output)
for (int i = 0; i < wire->width; i++) { for (int i = 0; i < wire->width; i++) {
int ilevel = visit(cursor, driver->getPort(wire->name)[i]); int ilevel = visit(cursor, driver->getPort(wire->name)[i]);
max = std::max(max, ilevel + 1); max = std::max(max, ilevel + 1);
@ -858,7 +858,7 @@ struct XAigerAnalysis : Index<XAigerAnalysis, int, 0, 0> {
for (auto id : top->ports) { for (auto id : top->ports) {
Wire *w = top->wire(id); Wire *w = top->wire(id);
log_assert(w); log_assert(w);
if (w->port_input) if (w->port_input && !w->port_output)
for (int i = 0; i < w->width; i++) for (int i = 0; i < w->width; i++)
pi_literal(SigBit(w, i)) = 0; pi_literal(SigBit(w, i)) = 0;
} }
@ -868,7 +868,7 @@ struct XAigerAnalysis : Index<XAigerAnalysis, int, 0, 0> {
Module *def = design->module(box->type); Module *def = design->module(box->type);
if (!(def && def->has_attribute(ID::abc9_box_id))) if (!(def && def->has_attribute(ID::abc9_box_id)))
for (auto &conn : box->connections_) for (auto &conn : box->connections_)
if (box->output(conn.first)) if (box->port_dir(conn.first) != RTLIL::PD_INPUT)
for (auto bit : conn.second) for (auto bit : conn.second)
pi_literal(bit, &cursor) = 0; pi_literal(bit, &cursor) = 0;
} }
@ -883,7 +883,7 @@ struct XAigerAnalysis : Index<XAigerAnalysis, int, 0, 0> {
Module *def = design->module(box->type); Module *def = design->module(box->type);
if (!(def && def->has_attribute(ID::abc9_box_id))) if (!(def && def->has_attribute(ID::abc9_box_id)))
for (auto &conn : box->connections_) for (auto &conn : box->connections_)
if (box->input(conn.first)) if (box->port_dir(conn.first) == RTLIL::PD_INPUT)
for (auto bit : conn.second) for (auto bit : conn.second)
(void) eval_po(bit); (void) eval_po(bit);
} }
@ -950,12 +950,7 @@ struct XAigerWriter : AigerWriter {
void append_opaque_box_ports(Cell *box, HierCursor &cursor, bool inputs) void append_opaque_box_ports(Cell *box, HierCursor &cursor, bool inputs)
{ {
for (auto &conn : box->connections_) { for (auto &conn : box->connections_) {
bool is_input = box->input(conn.first); bool is_input = box->port_dir(conn.first) == RTLIL::PD_INPUT;
bool is_output = box->output(conn.first);
if (!(is_input || is_output) || (is_input && is_output))
log_error("Ambiguous port direction on %s/%s\n",
log_id(box->type), log_id(conn.first));
if (is_input && inputs) { if (is_input && inputs) {
int bitp = 0; int bitp = 0;
@ -980,10 +975,10 @@ struct XAigerWriter : AigerWriter {
bitp++; bitp++;
} }
} else if (is_output && !inputs) { } else if (!is_input && !inputs) {
for (auto &bit : conn.second) { for (auto &bit : conn.second) {
if (!bit.wire || bit.wire->port_input) if (!bit.wire || (bit.wire->port_input && !bit.wire->port_output))
log_error("Bad connection"); log_error("Bad connection %s/%s ~ %s\n", log_id(box), log_id(conn.first), log_signal(conn.second));
ensure_pi(bit, cursor); ensure_pi(bit, cursor);
@ -1119,7 +1114,7 @@ struct XAigerWriter : AigerWriter {
holes_pi_idx++; holes_pi_idx++;
} }
holes_wb->setPort(port_id, in_conn); holes_wb->setPort(port_id, in_conn);
} else if (port->port_output && !port->port_input) { } else if (port->port_output) {
// primary // primary
for (int i = 0; i < port->width; i++) { for (int i = 0; i < port->width; i++) {
SigBit bit; SigBit bit;
@ -1172,7 +1167,7 @@ struct XAigerWriter : AigerWriter {
log_assert(port); log_assert(port);
if (port->port_input && !port->port_output) { if (port->port_input && !port->port_output) {
box_co_num += port->width; box_co_num += port->width;
} else if (port->port_output && !port->port_input) { } else if (port->port_output) {
box_ci_num += port->width; box_ci_num += port->width;
} else { } else {
log_abort(); log_abort();
@ -1195,7 +1190,7 @@ struct XAigerWriter : AigerWriter {
reset_counters(); reset_counters();
for (auto w : top->wires()) for (auto w : top->wires())
if (w->port_input) if (w->port_input && !w->port_output)
for (int i = 0; i < w->width; i++) for (int i = 0; i < w->width; i++)
ensure_pi(SigBit(w, i)); ensure_pi(SigBit(w, i));