diff options
Diffstat (limited to 'passes')
| -rw-r--r-- | passes/techmap/flowmap.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/passes/techmap/flowmap.cc b/passes/techmap/flowmap.cc index 5807178dd..a2ad87f7d 100644 --- a/passes/techmap/flowmap.cc +++ b/passes/techmap/flowmap.cc @@ -394,7 +394,7 @@ struct FlowGraph pair<pool<RTLIL::SigBit>, pool<RTLIL::SigBit>> edge_cut() { - pool<RTLIL::SigBit> x, xi; + pool<RTLIL::SigBit> x = {source}, xi; // X and X̅ in the paper NodePrime source_prime = {source, true}; pool<NodePrime> visited; @@ -437,6 +437,7 @@ struct FlowGraph for (auto collapsed_node : collapsed[sink]) xi.insert(collapsed_node); + log_assert(x[source] && !xi[source]); log_assert(!x[sink] && xi[sink]); return {x, xi}; } @@ -1050,7 +1051,7 @@ struct FlowmapWorker auto cut_inputs = cut_lut_at_gate(lut, lut_gate); pool<RTLIL::SigBit> gate_inputs = cut_inputs.first, other_inputs = cut_inputs.second; - if (gate_inputs.empty() && (int)other_inputs.size() == order) + if (gate_inputs.empty() && (int)other_inputs.size() >= order) { if (debug_relax) log(" Breaking would result in a (k+1)-LUT.\n"); |