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abc9: (* keep *) wires to be PO only, not PI as well; fix scc handling

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This commit is contained in:
Eddie Hung 2020-03-06 10:20:30 -08:00
parent 2335c59e5b
commit 91a7a74ac4
2 changed files with 9 additions and 11 deletions
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7
backends/aiger/xaiger.cc
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@ -174,11 +174,12 @@ struct XAigerWriter
undriven_bits.insert(bit);
unused_bits.insert(bit);
bool keep = wire->get_bool_attribute(ID::keep);
if (wire->port_input || keep)
bool scc = wire->attributes.count(ID(abc9_scc));
if (wire->port_input || scc)
input_bits.insert(bit);
if (wire->port_output || keep) {
bool keep = wire->get_bool_attribute(ID::keep);
if (wire->port_output || keep || scc) {
if (bit != wirebit)
alias_map[wirebit] = bit;
output_bits.insert(wirebit);