   0  -live- %r0
   3  guard_class %r0 -> %i0
   6  getfield_raw_i %i0, FieldDescr<pypy.module._io.interp_iobase.W_IOBase_vtable.cls__unsupportedoperation> -> %i0
  11  -live- %i0, %r0
  14  switch %i0, <SwitchDictDescr 0:L1, 1:L2>
  18  unreachable
  19  ---
  19  L1:
  19  -live- %r0
  22  inline_call_r_v <JitCode 'W_BufferedIOBase._unsupportedoperation'>, R[%r0, $<* struct rpy_string>]
  28  -live-
  31  raise $<* struct object>
  33  ---
  33  L2:
  33  -live-
  36  inline_call_r_r <JitCode 'unsupported'>, R[$<* struct rpy_string>] -> %r0
  42  -live- %r0
  45  assert_not_none %r0
  47  -live- %r0
  50  guard_class %r0 -> %i0
  53  -live- %r0
  56  raise %r0
