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flowmap: don't break if that creates a k+2 (and larger) LUT either.

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Fixes #1405.
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whitequark 2019-11-11 23:13:00 +00:00
parent 1d148491c5
commit eef32195bd
1 changed files with 1 additions and 1 deletions
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2
passes/techmap/flowmap.cc
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@ -1050,7 +1050,7 @@ struct FlowmapWorker
auto cut_inputs = cut_lut_at_gate(lut, lut_gate); auto cut_inputs = cut_lut_at_gate(lut, lut_gate);
pool<RTLIL::SigBit> gate_inputs = cut_inputs.first, other_inputs = cut_inputs.second; 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) if (debug_relax)
log(" Breaking would result in a (k+1)-LUT.\n"); log(" Breaking would result in a (k+1)-LUT.\n");