diff options
Diffstat (limited to 'passes/opt/opt_expr.cc')
| -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 c4da613ab..73f48317a 100644 --- a/passes/opt/opt_expr.cc +++ b/passes/opt/opt_expr.cc @@ -748,7 +748,7 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons if (cell->type.in(ID($shiftx), ID($shift))) { SigSpec sig_a = assign_map(cell->getPort(ID::A)); int width; - bool trim_x = true; + bool trim_x = cell->type == ID($shiftx) || !keepdc; bool trim_0 = cell->type == ID($shift); for (width = GetSize(sig_a); width > 1; width--) { if ((trim_x && sig_a[width-1] == State::Sx) || |