   0  -live- %i0, %r0
   0  guard_class %r0 -> %i1
   3  getfield_raw_i %i1, FieldDescr<pypy.module.cStringIO.interp_stringio.W_InputOutputType_vtable.cls_is_closed> -> %i1
   8  -live- %i0, %i1, %r0
   8  switch %i1, <SwitchDictDescr 0:L1, 1:L2, 2:L3>
  12  unreachable
  13  ---
  13  L1:
  13  -live- %i0, %r0
  13  getfield_gc_r %r0, FieldDescr<pypy.module.cStringIO.interp_stringio.W_InputType.inst_string> -> %r1
  18  ptr_iszero %r1 -> %i1
  21  L4:
  21  -live- %i0, %i1, %r0
  21  goto_if_not %i1, L5
  25  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff713b8960> -> %r1
  29  setfield_gc_r %r1, $<* struct rpy_string>, FieldDescr<pypy.interpreter.error.OpErrFmtNoArgs.inst__value>
  34  setfield_gc_r %r1, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  39  assert_not_none %r1
  41  -live- %r1
  41  guard_class %r1 -> %i1
  44  -live- %r1
  44  raise %r1
  46  ---
  46  L5:
  46  -live- %i0, %r0
  46  guard_class %r0 -> %i1
  49  getfield_raw_i %i1, FieldDescr<pypy.module.cStringIO.interp_stringio.W_InputOutputType_vtable.cls_readline> -> %i1
  54  -live- %i0, %i1, %r0
  54  switch %i1, <SwitchDictDescr 0:L6, 1:L7, 2:L8>
  58  unreachable
  59  ---
  59  L6:
  59  -live- %i0, %r0
  59  residual_call_ir_r $<* fn W_OutputType.readline>, I[%i0], R[%r0], <CallDescr(ri) EF=5> -> %r0
  68  -live- %r0
  68  L9:
  68  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff4f52efa0> -> %r1
  72  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  77  ref_return %r1
  79  ---
  79  L7:
  79  -live- %i0, %r0
  79  inline_call_ir_r <JitCode 'W_InputType.readline'>, I[%i0], R[%r0] -> %r0
  87  -live- %r0
  87  goto L9
  90  ---
  90  L8:
  90  -live-
  90  raise $<* struct object>
  92  ---
  92  L2:
  92  -live- %i0, %r0
  92  getfield_gc_i %r0, FieldDescr<pypy.module.cStringIO.interp_stringio.W_OutputType.inst__RStringIO__closed> -> %i1
  97  goto L4
 100  ---
 100  L3:
 100  -live-
 100  raise $<* struct object>
