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In sat: 'x' in init attr should not override constant

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This commit is contained in:
Eddie Hung 2019-08-22 16:42:19 -07:00
parent 66607845ec
commit 2b37a093e9
3 changed files with 7 additions and 1 deletions
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2
passes/sat/sat.cc
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@ -268,6 +268,8 @@ struct SatHelper
RTLIL::SigSpec removed_bits;
for (int i = 0; i < lhs.size(); i++) {
RTLIL::SigSpec bit = lhs.extract(i, 1);
if (bit.is_fully_const() && rhs[i] == State::Sx)
rhs[i] = bit;
if (!satgen.initial_state.check_all(bit)) {
removed_bits.append(bit);
lhs.remove(i, 1);