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-rw-r--r--passes/cmds/autoname.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/passes/cmds/autoname.cc b/passes/cmds/autoname.cc
index 4614a8153..50632201e 100644
--- 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;