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Merge pull request #1976 from YosysHQ/dave/fix-sim-const

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sim: Fix handling of constant-connected cell inputs at startup
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Claire Wolf 2020-04-22 16:57:34 +02:00 • committed by GitHub
commit c32b4bded5
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2 changed files with 18 additions and 1 deletions
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6
passes/sat/sim.cc
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@ -128,8 +128,12 @@ struct SimInstance
for (auto &port : cell->connections()) {
if (cell->input(port.first))
for (auto bit : sigmap(port.second))
for (auto bit : sigmap(port.second)) {
upd_cells[bit].insert(cell);
// Make sure cell inputs connected to constants are updated in the first cycle
if (bit.wire == nullptr)
dirty_bits.insert(bit);
}
}
if (cell->type.in(ID($dff))) {