   0  -live- %r0
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.objspace.std.bytesobject.W_AbstractBytesObject_vtable.cls_descr_len> -> %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  getfield_gc_r_pure %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value> -> %r0
  20  strlen %r0 -> %i0
  23  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x2eea8090> -> %r0
  27  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  32  ref_return %r0
