   0  -live- %r0
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.objspace.std.bytesobject.W_AbstractBytesObject_vtable.cls_descr_str> -> %i0
   8  -live- %i0, %r0
   8  switch %i0, <SwitchDictDescr 0:L1, 1:L2>
  12  unreachable
  13  ---
  13  L1:
  13  -live-
  13  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  15  ---
  15  L2:
  15  -live- %r0
  15  -live- %r0
  15  guard_class %r0 -> %i0
  18  -live- %i0, %r0
  18  goto_if_not_int_eq %i0, $<* struct object_vtable>, L3
  23  L4:
  23  ref_return %r0
  25  ---
  25  L3:
  25  getfield_gc_r_pure %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value> -> %r1
  30  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x1002aba8990> -> %r0
  34  setfield_gc_r %r0, %r1, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  39  goto L4
