   0  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x10063ed0ad0> -> %r0
   4  setfield_gc_r %r0, $<* array [  ]>, FieldDescr<pypy.interpreter.typedef.LocalUserSlots.inst_slots_w>
   9  ref_return %r0
