diff options
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/aiger/xaiger.cc | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/backends/aiger/xaiger.cc b/backends/aiger/xaiger.cc index 402f41597..7b6b851b3 100644 --- a/backends/aiger/xaiger.cc +++ b/backends/aiger/xaiger.cc @@ -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); |