From 2962f8fa88032f7a88e564799f22014783566884 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Povi=C5=A1er?= Date: Wed, 27 Nov 2024 15:54:22 +0100 Subject: [PATCH 1/2] techmap: Add `-dont_map` for selective disabling of rules --- passes/techmap/techmap.cc | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc index f3927a486..84bcbb2c7 100644 --- a/passes/techmap/techmap.cc +++ b/passes/techmap/techmap.cc @@ -1028,6 +1028,10 @@ struct TechmapPass : public Pass { log(" map file. Note that the Verilog frontend is also called with the\n"); log(" '-nooverwrite' option set.\n"); log("\n"); + log(" -dont_map \n"); + log(" ignore any mapping rules for the given cell type, that is leave it\n"); + log(" unmapped.\n"); + log("\n"); log("When a module in the map file has the 'techmap_celltype' attribute set, it will\n"); log("match cells with a type that match the text value of this attribute. Otherwise\n"); log("the module name will be used to match the cell. Multiple space-separated cell\n"); @@ -1159,6 +1163,7 @@ struct TechmapPass : public Pass { simplemap_get_mappers(worker.simplemap_mappers); std::vector map_files; + std::vector dont_map; std::string verilog_frontend = "verilog -nooverwrite -noblackbox"; int max_iter = -1; @@ -1200,6 +1205,10 @@ struct TechmapPass : public Pass { worker.ignore_wb = true; continue; } + if (args[argidx] == "-dont_map" && argidx+1 < args.size()) { + dont_map.push_back(RTLIL::escape_id(args[++argidx])); + continue; + } break; } extra_args(args, argidx, design); @@ -1256,6 +1265,11 @@ struct TechmapPass : public Pass { celltypeMap[module_name].insert(module->name); } } + + // Erase any rules disabled with a -dont_map argument + for (auto type : dont_map) + celltypeMap.erase(type); + log_debug("Cell type mappings to use:\n"); for (auto &i : celltypeMap) { i.second.sort(RTLIL::sort_by_id_str()); From 1c7bb700c966b75dc516205b16b80bc2971671e9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Povi=C5=A1er?= Date: Tue, 3 Dec 2024 20:20:00 +0100 Subject: [PATCH 2/2] techmap: Rephrase help --- passes/techmap/techmap.cc | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc index 84bcbb2c7..b77bab69e 100644 --- a/passes/techmap/techmap.cc +++ b/passes/techmap/techmap.cc @@ -1029,8 +1029,7 @@ struct TechmapPass : public Pass { log(" '-nooverwrite' option set.\n"); log("\n"); log(" -dont_map \n"); - log(" ignore any mapping rules for the given cell type, that is leave it\n"); - log(" unmapped.\n"); + log(" leave the given cell type unmapped by ignoring any mapping rules for it\n"); log("\n"); log("When a module in the map file has the 'techmap_celltype' attribute set, it will\n"); log("match cells with a type that match the text value of this attribute. Otherwise\n");