diff options
Diffstat (limited to 'passes')
| -rw-r--r-- | passes/opt/opt_const.cc | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/passes/opt/opt_const.cc b/passes/opt/opt_const.cc index b04ed9e7..f20181f1 100644 --- a/passes/opt/opt_const.cc +++ b/passes/opt/opt_const.cc @@ -151,8 +151,8 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons if (cell->parameters["\\A_WIDTH"].as_int() != cell->parameters["\\B_WIDTH"].as_int()) { int width = std::max(cell->parameters["\\A_WIDTH"].as_int(), cell->parameters["\\B_WIDTH"].as_int()); - a.extend(width, cell->parameters["\\A_SIGNED"].as_bool() && cell->parameters["\\B_SIGNED"].as_bool()); - b.extend(width, cell->parameters["\\A_SIGNED"].as_bool() && cell->parameters["\\B_SIGNED"].as_bool()); + a.extend_un0(width, cell->parameters["\\A_SIGNED"].as_bool() && cell->parameters["\\B_SIGNED"].as_bool()); + b.extend_un0(width, cell->parameters["\\A_SIGNED"].as_bool() && cell->parameters["\\B_SIGNED"].as_bool()); } RTLIL::SigSpec new_a, new_b; @@ -168,6 +168,13 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons new_b.append(b.chunks[i]); } + if (new_a.width == 0) { + RTLIL::SigSpec new_y = RTLIL::SigSpec(cell->type == "$eq" ? RTLIL::State::S1 : RTLIL::State::S0); + new_y.extend(cell->parameters["\\Y_WIDTH"].as_int(), false); + replace_cell(module, cell, "empty", "\\Y", new_y); + goto next_cell; + } + if (new_a.width != a.width) { new_a.optimize(); new_b.optimize(); @@ -176,13 +183,6 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons cell->parameters["\\A_WIDTH"] = new_a.width; cell->parameters["\\B_WIDTH"] = new_b.width; } - - if (new_a.width == 0) { - RTLIL::SigSpec new_y = RTLIL::SigSpec(cell->type == "$eq" ? RTLIL::State::S1 : RTLIL::State::S0); - new_y.extend(cell->parameters["\\Y_WIDTH"].as_int(), false); - replace_cell(module, cell, "empty", "\\Y", new_y); - goto next_cell; - } } if ((cell->type == "$eq" || cell->type == "$ne") && cell->parameters["\\Y_WIDTH"].as_int() == 1 && |