   0  getfield_gc_r %r0, FieldDescr<pypy.module.marshal.interp_marshal.Marshaller.inst_writer> -> %r1
   5  -live- %i0, %r1
   8  guard_class %r1 -> %i1
  11  getfield_raw_i %i1, FieldDescr<pypy.module.marshal.interp_marshal.AbstractReaderWriter_vtable.cls_write> -> %i1
  16  newstr $1 -> %r0
  19  strsetitem %r0, $0, %i0
  23  -live- %i1, %r0, %r1
  26  switch %i1, <SwitchDictDescr 0:L1, 1:L2, 2:L3>
  30  unreachable
  31  ---
  31  L1:
  31  -live- %r0, %r1
  34  getfield_gc_r %r1, FieldDescr<pypy.module.marshal.interp_marshal.FileWriter.inst_func> -> %r1
  39  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000555aafd147c8> -> %r2
  43  setfield_gc_r %r2, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  48  inline_call_r_r <JitCode 'call_function__star_1'>, R[%r1, %r2] -> %r0
  55  -live-
  58  void_return
  59  ---
  59  L2:
  59  -live- %r0, %r1
  62  getfield_gc_r %r1, FieldDescr<pypy.module.marshal.interp_marshal.StreamReaderWriter.inst_file> -> %r1
  67  setfield_gc_i %r1, $0, FieldDescr<pypy.module._file.interp_file.W_File.inst_softspace>
  72  getfield_gc_r %r1, FieldDescr<pypy.module._file.interp_file.W_File.inst_stream> -> %r1
  77  -live- %r0, %r1
  80  goto_if_not_ptr_iszero %r1, L4
  84  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000555ab11f9c90> -> %r0
  88  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<pypy.interpreter.error.OpErrFmtNoArgs.inst__value>
  93  setfield_gc_r %r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  98  assert_not_none %r0
 100  -live- %r0
 103  raise %r0
 105  ---
 105  L4:
 105  -live- %r0, %r1
 108  guard_class %r1 -> %i0
 111  getfield_raw_i %i0, FieldDescr<rpython.rlib.streamio.Stream_vtable.cls_write> -> %i0
 116  -live- %i0, %r0, %r1
 119  int_guard_value %i0
 121  residual_call_r_v %i0, <IndirectCallTargets>, R[%r1, %r0], <CallDescr(rr) EF=7>
 128  -live-
 131  void_return
 132  ---
 132  L3:
 132  -live-
 135  raise $<* struct object>
