diff options
Diffstat (limited to 'passes/techmap/dfflibmap.cc')
| -rw-r--r-- | passes/techmap/dfflibmap.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/passes/techmap/dfflibmap.cc b/passes/techmap/dfflibmap.cc index c8104fb7..416ed2bd 100644 --- a/passes/techmap/dfflibmap.cc +++ b/passes/techmap/dfflibmap.cc @@ -240,6 +240,10 @@ static void find_cell_sr(LibertyAst *ast, std::string cell_type, bool clkpol, bo if (cell->id != "cell" || cell->args.size() != 1) continue; + LibertyAst *dn = cell->find("dont_use"); + if (dn != NULL && dn->value == "true") + continue; + LibertyAst *ff = cell->find("ff"); if (ff == NULL) continue; @@ -478,11 +482,15 @@ static void dfflibmap(RTLIL::Design *design, RTLIL::Module *module, bool prepare auto cell_type = cell->type; auto cell_name = cell->name; auto cell_connections = cell->connections(); + std::string src = cell->get_src_attribute(); + module->remove(cell); cell_mapping &cm = cell_mappings[cell_type]; RTLIL::Cell *new_cell = module->addCell(cell_name, prepare_mode ? cm.cell_name : "\\" + cm.cell_name); + new_cell->set_src_attribute(src); + bool has_q = false, has_qn = false; for (auto &port : cm.ports) { if (port.second == 'Q') has_q = true; @@ -529,7 +537,7 @@ static void dfflibmap(RTLIL::Design *design, RTLIL::Module *module, bool prepare struct DfflibmapPass : public Pass { DfflibmapPass() : Pass("dfflibmap", "technology mapping of flip-flops") { } - virtual void help() + void help() YS_OVERRIDE { log("\n"); log(" dfflibmap [-prepare] -liberty <file> [selection]\n"); @@ -545,7 +553,7 @@ struct DfflibmapPass : public Pass { log("liberty file.\n"); log("\n"); } - virtual void execute(std::vector<std::string> args, RTLIL::Design *design) + void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE { log_header(design, "Executing DFFLIBMAP pass (mapping DFF cells to sequential cells from liberty file).\n"); |