   0  getfield_gc_r %r0, FieldDescr<pypy.module.marshal.interp_marshal.Marshaller.inst_writer> -> %r0
   5  -live- %i0, %r0
   5  guard_class %r0 -> %i1
   8  getfield_raw_i %i1, FieldDescr<pypy.module.marshal.interp_marshal.AbstractReaderWriter_vtable.cls_write> -> %i1
  13  newstr $1 -> %r1
  16  strsetitem %r1, $0, %i0
  20  -live- %i1, %r0, %r1
  20  switch %i1, <SwitchDictDescr 0:L1, 1:L2, 2:L3>
  24  unreachable
  25  ---
  25  L1:
  25  -live- %r0, %r1
  25  getfield_gc_r %r0, FieldDescr<pypy.module.marshal.interp_marshal.StreamReaderWriter.inst_file> -> %r0
  30  setfield_gc_i %r0, $0, FieldDescr<pypy.module._file.interp_file.W_File.inst_softspace>
  35  getfield_gc_r %r0, FieldDescr<pypy.module._file.interp_file.W_File.inst_stream> -> %r0
  40  -live- %r0, %r1
  40  goto_if_not_ptr_iszero %r0, L4
  44  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x00000100b1c14a68> -> %r0
  48  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<pypy.interpreter.error.OpErrFmtNoArgs.inst__value>
  53  setfield_gc_r %r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  58  assert_not_none %r0
  60  -live- %r0
  60  guard_class %r0 -> %i0
  63  -live- %r0
  63  raise %r0
  65  ---
  65  L4:
  65  -live- %r0, %r1
  65  guard_class %r0 -> %i0
  68  getfield_raw_i %i0, FieldDescr<rpython.rlib.streamio.Stream_vtable.cls_write> -> %i0
  73  -live- %i0, %r0, %r1
  73  int_guard_value %i0
  75  residual_call_r_v %i0, <IndirectCallTargets>, R[%r0, %r1], <CallDescr(rr) EF=7>
  82  -live-
  82  void_return
  83  ---
  83  L2:
  83  -live- %r0, %r1
  83  getfield_gc_r %r0, FieldDescr<pypy.module.marshal.interp_marshal.FileWriter.inst_func> -> %r0
  88  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x00000100a3a75408> -> %r2
  92  setfield_gc_r %r2, %r1, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  97  inline_call_r_r <JitCode 'call_function__star_1'>, R[%r0, %r2] -> %r0
 104  -live-
 104  void_return
 105  ---
 105  L3:
 105  -live-
 105  raise $<* struct object>
