This function has an optimization

https://github.com/openjdk/jdk/blob/2427c901b31dbdccc6f8f39404875a0140460479/src/hotspot/share/classfile/classFileParser.cpp#L3827

    if (cp->tag_at(super_class_index).is_klass()) {
      super_klass = InstanceKlass::cast(cp->resolved_klass_at(super_class_index));

But this case is never reached, because we are very early in class file parsing and no classes in the CP should have been resolved in the CP at this point.

This check should be removed.