   0  -live- %r1
   0  goto_if_not_ptr_nonzero %r1, L1
   4  -live- %r1
   4  guard_class %r1 -> %i0
   7  -live- %i0
   7  goto_if_not_int_eq %i0, $<* struct object_vtable>, L2
  12  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  14  ---
  14  L2:
  14  raise $<* struct object>
  16  ---
  16  L1:
  16  raise $<* struct object>
