   0  -live- %r0
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_str_w> -> %i0
   8  -live- %i0, %r0
   8  switch %i0, <SwitchDictDescr 0:L1, 1:L2, 2:L3>
  12  unreachable
  13  ---
  13  L1:
  13  -live- %r0
  13  getfield_gc_r_pure %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value> -> %r0
  18  L4:
  18  inline_call_r_i <JitCode '_calcsize'>, R[%r0] -> %i0
  24  -live- %i0
  24  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x2eea8090> -> %r0
  28  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  33  ref_return %r0
  35  ---
  35  L2:
  35  -live- %r0
  35  inline_call_r_r <JitCode 'oefmt__expected__s__got__T_object_star_2'>, R[$<* struct pypy.objspace.std.typeobject.W_TypeObject>, $<* struct rpy_string>, $<* struct rpy_string>, %r0] -> %r0
  44  -live- %r0
  44  -live- %r0
  44  guard_class %r0 -> %i0
  47  -live- %r0
  47  raise %r0
  49  ---
  49  L3:
  49  -live- %r0
  49  inline_call_r_r <JitCode 'W_UnicodeObject.str_w'>, R[%r0] -> %r0
  55  -live- %r0
  55  goto L4
