autoname: do not autoname ports

diff --git a/passes/cmds/autoname.cc b/passes/cmds/autoname.cc
index 4614a81534cb173e2bd2ba5a2a6babc8beede87e..50632201e52fa6cb5419cada62b38b08d760b7f9 100644 (file)
--- a/passes/cmds/autoname.cc
+++ b/passes/cmds/autoname.cc
@@ -56,7 +56,7 @@ int autoname_worker(Module *module)
                        for (auto &conn : cell->connections()) {
                                string suffix = stringf("_%s", log_id(conn.first));
                                for (auto bit : conn.second)
-                                       if (bit.wire != nullptr && bit.wire->name[0] == '$') {
+                                       if (bit.wire != nullptr && bit.wire->name[0] == '$' && !bit.wire->port_id) {
                                                IdString new_name(cell->name.str() + suffix);
                                                int score = wire_score.at(bit.wire);
                                                if (cell->output(conn.first)) score = 0;