diff options
Diffstat (limited to 'passes/opt/opt_const.cc')
| -rw-r--r-- | passes/opt/opt_const.cc | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/passes/opt/opt_const.cc b/passes/opt/opt_const.cc index 6a830dd0..55da987a 100644 --- a/passes/opt/opt_const.cc +++ b/passes/opt/opt_const.cc @@ -524,11 +524,11 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons RTLIL::SigSpec a = assign_map(cell->getPort("\\A")); RTLIL::SigSpec b = assign_map(cell->getPort("\\B")); - if (a.is_fully_const()) { + if (a.is_fully_const() && !b.is_fully_const()) { cover_list("opt.opt_const.eqneq.swapconst", "$eq", "$ne", cell->type.str()); - RTLIL::SigSpec tmp = cell->getPort("\\A"); - cell->setPort("\\A", cell->getPort("\\B")); - cell->setPort("\\B", tmp); + cell->setPort("\\A", b); + cell->setPort("\\B", a); + std::swap(a, b); } if (b.is_fully_const()) { |