diff options
Diffstat (limited to 'passes')
| -rw-r--r-- | passes/techmap/abc9_ops.cc | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/passes/techmap/abc9_ops.cc b/passes/techmap/abc9_ops.cc index d3bb31cd9..6e18cb5f6 100644 --- a/passes/techmap/abc9_ops.cc +++ b/passes/techmap/abc9_ops.cc @@ -189,8 +189,6 @@ void prep_hier(RTLIL::Design *design, bool dff_mode) derived_type = inst_module->derive(design, cell->parameters); derived_module = design->module(derived_type); } - if (derived_module->get_blackbox_attribute(true /* ignore_wb */)) - continue; if (derived_module->get_bool_attribute(ID::abc9_flop)) { if (!dff_mode) @@ -799,14 +797,12 @@ void prep_xaiger(RTLIL::Module *module, bool dff) if (!box_module->get_bool_attribute(ID::abc9_box)) continue; if (!cell->parameters.empty()) - // At this stage of the ABC9 flow, all modules must be nonparametric, because ABC itself requires concrete netlists, and the presence of - // parameters implies a non-concrete netlist. This error needs some explaining, because there are (at least) two ways to get this: - // 1) You have an (* abc9_box *) parametric whitebox but due to a bug somewhere this hasn't been monomorphised into a concrete blackbox. - // This is a bug, and a bug report would be welcomed. - // 2) You have an (* abc9_box *) parametric blackbox (e.g. to store associated cell data) but want to provide timing data for ABC9. - // This is not supported due to the presence of parameters. If you want to store associated cell data for a box, one approach could be - // to techmap the parameters to constant module inputs, and then after ABC9 use _TECHMAP_CONSTVAL_XX_ to retrieve the values again. - log_error("Black box '%s' is marked (* abc9_box *) and has parameters, which is forbidden in prep_xaiger\n", log_id(cell_name)); + { + // At this stage of the ABC9 flow, all modules must be nonparametric, because ABC itself requires concrete netlists, and the presence of + // parameters implies a non-concrete netlist. This means an (* abc9_box *) parametric module but due to a bug somewhere this hasn't been + // uniquified into a concrete parameter-free module. This is a bug, and a bug report would be welcomed. + log_error("Not expecting parameters on module '%s' marked (* abc9_box *)\n", log_id(cell_name)); + } log_assert(box_module->get_blackbox_attribute()); cell->attributes[ID::abc9_box_seq] = box_count++; |