techmap: Add support for [] wildcards in techmap_celltype.

Fixes #1826.

passes/techmap/techmap.cc

@@ -1007,7 +1007,9 @@ struct TechmapPass : public Pass {
 		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.\n");
+		log("the module name will be used to match the cell.  Multiple space-separated cell\n");
+		log("types can be listed, and wildcards using [] will be expanded (ie. \"$_DFF_[PN]_\"\n");
+		log("is the same as \"$_DFF_P_ $_DFF_N_\").\n");
 		log("\n");
 		log("When a module in the map file has the 'techmap_simplemap' attribute set, techmap\n");
 		log("will use 'simplemap' (see 'help simplemap') to map cells matching the module.\n");
@@ -1199,8 +1201,27 @@ struct TechmapPass : public Pass {
 		for (auto module : map->modules()) {
 			if (module->attributes.count(ID::techmap_celltype) && !module->attributes.at(ID::techmap_celltype).bits.empty()) {
 				char *p = strdup(module->attributes.at(ID::techmap_celltype).decode_string().c_str());
-				for (char *q = strtok(p, " \t\r\n"); q; q = strtok(nullptr, " \t\r\n"))
+				for (char *q = strtok(p, " \t\r\n"); q; q = strtok(nullptr, " \t\r\n")) {
-					celltypeMap[RTLIL::escape_id(q)].insert(module->name);
+					std::vector<std::string> queue;
+					queue.push_back(q);
+					while (!queue.empty()) {
+						std::string name = queue.back();
+						queue.pop_back();
+						auto pos = name.find('[');
+						if (pos == std::string::npos) {
+							// No further expansion.
+							celltypeMap[RTLIL::escape_id(name)].insert(module->name);
+						} else {
+							// Expand [] in this name.
+							auto epos = name.find(']', pos);
+							if (epos == std::string::npos)
+								log_error("Malformed techmap_celltype pattern %s\n", q);
+							for (size_t i = pos + 1; i < epos; i++) {
+								queue.push_back(name.substr(0, pos) + name[i] + name.substr(epos + 1, std::string::npos));
+							}
+						}
+					}
+				}
 				free(p);
 			} else {
 				IdString module_name = module->name.begins_with("\\$") ?
@@ -1208,8 +1229,15 @@ struct TechmapPass : public Pass {
 				celltypeMap[module_name].insert(module->name);
 			}
 		}
-		for (auto &i : celltypeMap)
+		log_debug("Cell type mappings to use:\n");
+		for (auto &i : celltypeMap) {
 			i.second.sort(RTLIL::sort_by_id_str());
+			std::string maps = "";
+			for (auto &map : i.second)
+				maps += stringf(" %s", log_id(map));
+			log_debug("    %s:%s\n", log_id(i.first), maps.c_str());
+		}
+		log_debug("\n");
 
 		for (auto module : design->modules())
 			worker.module_queue.insert(module);

techlibs/common/abc9_map.v

@@ -1,5 +1,5 @@
 `ifdef DFF
-(* techmap_celltype = "$_DFF_N_ $_DFF_P_" *)
+(* techmap_celltype = "$_DFF_[PN]_" *)
 module $_DFF_x_(input C, D, output Q);
   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
   parameter _TECHMAP_CELLTYPE_ = "";

techlibs/efinix/cells_map.v

@@ -1,4 +1,4 @@
-(* techmap_celltype = "$_DFFE_PP0P_ $_DFFE_PP0N_ $_DFFE_PP1P_ $_DFFE_PP1N_ $_DFFE_PN0P_ $_DFFE_PN0N_ $_DFFE_PN1P_ $_DFFE_PN1N_ $_DFFE_NP0P_ $_DFFE_NP0N_ $_DFFE_NP1P_ $_DFFE_NP1N_ $_DFFE_NN0P_ $_DFFE_NN0N_ $_DFFE_NN1P_ $_DFFE_NN1N_" *)
+(* techmap_celltype = "$_DFFE_[PN][PN][01][PN]_" *)
 module  \$_DFFE_xxxx_ (input D, C, R, E, output Q);
 
   parameter _TECHMAP_CELLTYPE_ = "";
@@ -17,7 +17,7 @@ module  \$_DFFE_xxxx_ (input D, C, R, E, output Q);
 
 endmodule
 
-(* techmap_celltype = "$_SDFFE_PP0P_ $_SDFFE_PP0N_ $_SDFFE_PP1P_ $_SDFFE_PP1N_ $_SDFFE_PN0P_ $_SDFFE_PN0N_ $_SDFFE_PN1P_ $_SDFFE_PN1N_ $_SDFFE_NP0P_ $_SDFFE_NP0N_ $_SDFFE_NP1P_ $_SDFFE_NP1N_ $_SDFFE_NN0P_ $_SDFFE_NN0N_ $_SDFFE_NN1P_ $_SDFFE_NN1N_" *)
+(* techmap_celltype = "$_SDFFE_[PN][PN][01][PN]_" *)
 module  \$_SDFFE_xxxx_ (input D, C, R, E, output Q);
 
   parameter _TECHMAP_CELLTYPE_ = "";
@@ -36,7 +36,7 @@ module  \$_SDFFE_xxxx_ (input D, C, R, E, output Q);
 
 endmodule
 
-(* techmap_celltype = "$_SDFFCE_PP0P_ $_SDFFCE_PP0N_ $_SDFFCE_PP1P_ $_SDFFCE_PP1N_ $_SDFFCE_PN0P_ $_SDFFCE_PN0N_ $_SDFFCE_PN1P_ $_SDFFCE_PN1N_ $_SDFFCE_NP0P_ $_SDFFCE_NP0N_ $_SDFFCE_NP1P_ $_SDFFCE_NP1N_ $_SDFFCE_NN0P_ $_SDFFCE_NN0N_ $_SDFFCE_NN1P_ $_SDFFCE_NN1N_" *)
+(* techmap_celltype = "$_SDFFCE_[PN][PN][01][PN]_" *)
 module  \$_SDFFCE_xxxx_ (input D, C, R, E, output Q);
 
   parameter _TECHMAP_CELLTYPE_ = "";