   0  setfield_gc_r %r0, %r1, FieldDescr<pypy.interpreter.typedef.W_Int16BoxUserDictWeakrefable.inst_storage>
   5  setfield_gc_r %r0, %r2, FieldDescr<pypy.interpreter.typedef.W_Int16BoxUserDictWeakrefable.inst_map>
  10  void_return
