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Merge pull request #4895 from YosysHQ/emil/fix-share-portbit-infinite-loop

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share: fix infinite loop in find_terminal_bits on $mux loop
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Emil J 2025-03-08 13:14:11 +01:00 • committed by GitHub
commit 8bb24badf2
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passes/opt/share.cc
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@ -87,7 +87,7 @@ struct ShareWorker
queue_bits.clear(); queue_bits.clear();
for (auto &pbit : portbits) { for (auto &pbit : portbits) {
if (pbit.cell->type == ID($mux) || pbit.cell->type == ID($pmux)) { if ((pbit.cell->type == ID($mux) || pbit.cell->type == ID($pmux)) && visited_cells.count(pbit.cell) == 0) {
pool<RTLIL::SigBit> bits = modwalker.sigmap(pbit.cell->getPort(ID::S)).to_sigbit_pool(); pool<RTLIL::SigBit> bits = modwalker.sigmap(pbit.cell->getPort(ID::S)).to_sigbit_pool();
terminal_bits.insert(bits.begin(), bits.end()); terminal_bits.insert(bits.begin(), bits.end());
queue_bits.insert(bits.begin(), bits.end()); queue_bits.insert(bits.begin(), bits.end());