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Merge pull request #2077 from YosysHQ/eddie/abc9_dff_improve

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abc9: -dff improvements
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Eddie Hung 2020-06-04 08:15:25 -07:00 • committed by GitHub
commit 69850204c4
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6 changed files with 143 additions and 55 deletions
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7
frontends/aiger/aigerparse.cc
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@ -775,7 +775,6 @@ void AigerReader::post_process()
}
}
dict<int, Wire*> mergeability_to_clock;
for (uint32_t i = 0; i < flopNum; i++) {
RTLIL::Wire *d = outputs[outputs.size() - flopNum + i];
log_assert(d);
@ -895,7 +894,9 @@ 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)
log_debug("Box %d (%s) no longer exists.\n", variable, log_id(escaped_s));
else
module->rename(cell, escaped_s);
}
else
@ -907,6 +908,8 @@ void AigerReader::post_process()
auto name = wp.first;
int min = wp.second.first;
int max = wp.second.second;
if (min == 0 && max == 0)
continue;
RTLIL::Wire *wire = module->wire(name);
if (wire)