diff options
Diffstat (limited to 'kernel/consteval.h')
| -rw-r--r-- | kernel/consteval.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/consteval.h b/kernel/consteval.h index a424007ef..10116ccfe 100644 --- a/kernel/consteval.h +++ b/kernel/consteval.h @@ -110,6 +110,7 @@ struct ConstEval if (cell->type == "$mux" || cell->type == "$pmux" || cell->type == "$safe_pmux" || cell->type == "$_MUX_") { std::vector<RTLIL::SigSpec> y_candidates; + int count_maybe_set_s_bits = 0; int count_set_s_bits = 0; for (int i = 0; i < sig_s.width; i++) @@ -120,16 +121,17 @@ struct ConstEval if (s_bit == RTLIL::State::Sx || s_bit == RTLIL::State::S1) y_candidates.push_back(b_slice); + if (s_bit == RTLIL::State::S1 || s_bit == RTLIL::State::Sx) + count_maybe_set_s_bits++; + if (s_bit == RTLIL::State::S1) count_set_s_bits++; } - if (cell->type == "$safe_pmux" && count_set_s_bits > 1) { + if (cell->type == "$safe_pmux" && count_set_s_bits > 1) y_candidates.clear(); - count_set_s_bits = 0; - } - if (count_set_s_bits == 0) + if ((cell->type == "$safe_pmux" && count_maybe_set_s_bits > 1) || count_set_s_bits == 0) y_candidates.push_back(sig_a); std::vector<RTLIL::Const> y_values; |