diff options
Diffstat (limited to 'passes')
| -rw-r--r-- | passes/opt/opt_expr.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/passes/opt/opt_expr.cc b/passes/opt/opt_expr.cc index be0cd470b..9cc0170dc 100644 --- a/passes/opt/opt_expr.cc +++ b/passes/opt/opt_expr.cc @@ -1494,7 +1494,7 @@ skip_identity: RTLIL::SigSpec input = assign_map(cell->getPort(ID::S)); RTLIL::SigSpec inA = assign_map(cell->getPort(ID::A)); RTLIL::SigSpec inB = assign_map(cell->getPort(ID::B)); - if (input.is_fully_const()) + if (input.is_fully_const() && (!keepdc || input.is_fully_def())) ACTION_DO(ID::Y, input.as_bool() ? cell->getPort(ID::B) : cell->getPort(ID::A)); else if (inA == inB) ACTION_DO(ID::Y, cell->getPort(ID::A)); |