diff options
Diffstat (limited to 'passes/fsm/fsm_opt.cc')
| -rw-r--r-- | passes/fsm/fsm_opt.cc | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/passes/fsm/fsm_opt.cc b/passes/fsm/fsm_opt.cc index d5a9b71fa..efa61245a 100644 --- a/passes/fsm/fsm_opt.cc +++ b/passes/fsm/fsm_opt.cc @@ -33,18 +33,14 @@ struct FsmOpt bool signal_is_unused(RTLIL::SigSpec sig) { - assert(sig.size() == 1); - sig.optimize(); + RTLIL::SigBit bit = sig.to_single_sigbit(); - RTLIL::Wire *wire = sig.chunks()[0].wire; - int bit = sig.chunks()[0].offset; - - if (!wire || wire->attributes.count("\\unused_bits") == 0) + if (bit.wire == NULL || bit.wire->attributes.count("\\unused_bits") == 0) return false; - char *str = strdup(wire->attributes["\\unused_bits"].decode_string().c_str()); + char *str = strdup(bit.wire->attributes["\\unused_bits"].decode_string().c_str()); for (char *tok = strtok(str, " "); tok != NULL; tok = strtok(NULL, " ")) { - if (tok[0] && bit == atoi(tok)) { + if (tok[0] && bit.offset == atoi(tok)) { free(str); return true; } |