Fix submod -hidden

diff --git a/passes/hierarchy/submod.cc b/passes/hierarchy/submod.cc
index 118a653014bf4f88e8f8100538769d46ba9e2e35..14974666edae794d12ff54f9c227d93248a394bd 100644 (file)
--- a/passes/hierarchy/submod.cc
+++ b/passes/hierarchy/submod.cc
@@ -151,15 +151,16 @@ struct SubmodWorker
                                new_wire_name = stringf("%s[%d]", wire->name.c_str(), bit.offset);
                        if (new_wire_port_input || new_wire_port_output) {
                                if (new_wire_name[0] == '$')
-                                       do {
-                                               std::string next_wire_name = stringf("%s\\n%d", hidden_mode ? "$submod" : ":", auto_name_counter++);
+                                       while (1) {
+                                               std::string next_wire_name = stringf("%s\\n%d", hidden_mode ? "$submod" : "", auto_name_counter++);
                                                if (all_wire_names.count(next_wire_name) == 0) {
                                                        all_wire_names.insert(next_wire_name);
                                                        new_wire_name = next_wire_name;
+                                                       break;
                                                }
-                                       } while (new_wire_name[0] == '$');
-                               else
-                                       new_wire_name = stringf("$submod%s\n", new_wire_name.c_str());
+                                       }
+                               else if (hidden_mode)
+                                       new_wire_name = stringf("$submod%s", new_wire_name.c_str());
                        }
 
                        RTLIL::Wire *new_wire = new_mod->addWire(new_wire_name);