   0  inline_call_r_r <JitCode 'allocate_instance__W_BytesIO'>, R[%r0] -> %r0
   6  -live- %r0
   6  inline_call_ir_r <JitCode 'allocate_and_init_instance'>, I[$False, $False, $False, $False], R[$<* struct pypy.interpreter.baseobjspace.W_Root>] -> %r1
  17  -live- %r0, %r1
  17  setfield_gc_r %r0, %r1, FieldDescr<pypy.module._io.interp_iobase.W_IOBase.inst_w_dict>
  22  setfield_gc_i %r0, $False, FieldDescr<pypy.module._io.interp_iobase.W_IOBase.inst__W_IOBase__IOBase_closed>
  27  setfield_gc_i %r0, $False, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__closed>
  32  setfield_gc_r %r0, $<* struct stringbuilder>, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings>
  37  setfield_gc_r %r0, $<* struct list>, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__bigbuffer>
  42  setfield_gc_i %r0, $-1, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__pos>
  47  ref_return %r0
