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consteval: Fix $bwmux handling

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If the cell type has a S signal and hasn't already been handled, use `CellTypes::eval(cell, A, B, S)`.
This commit is contained in:
Krystine Sherwin 2025-04-15 17:19:31 +12:00
parent 31aaf6e7f7
commit 49eec407c2
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2 changed files with 6 additions and 4 deletions
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6
kernel/consteval.h
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@ -349,7 +349,11 @@ struct ConstEval
return false;
bool eval_err = false;
RTLIL::Const eval_ret = CellTypes::eval(cell, sig_a.as_const(), sig_b.as_const(), sig_c.as_const(), sig_d.as_const(), &eval_err);
RTLIL::Const eval_ret;
if (sig_s.size() > 0 && eval(sig_s, undef, cell)) {
eval_ret = CellTypes::eval(cell, sig_a.as_const(), sig_b.as_const(), sig_s.as_const(), &eval_err);
} else
eval_ret = CellTypes::eval(cell, sig_a.as_const(), sig_b.as_const(), sig_c.as_const(), sig_d.as_const(), &eval_err);
if (eval_err)
return false;

4
passes/tests/test_cell.cc
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@ -1044,9 +1044,7 @@ struct TestCellPass : public Pass {
// $pmux doesn't work in sat, and is not supported with 'techmap -assert'
if (nosat && techmap_cmd.compare("aigmap") == 0)
cell_types[ID($pmux)] = "*";
// $bwmux is not supported by ConstEval
if (noeval)
cell_types[ID($bwmux)] = "A";
cell_types[ID($bwmux)] = "A";
cell_types[ID($slice)] = "A";
cell_types[ID($concat)] = "AB";