   0  getfield_gc_r %r0, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings> -> %r2
   5  -live- %r0, %r1, %r2
   5  goto_if_not_ptr_iszero %r2, L1
   9  new <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000002aac0faf478> -> %r2
  13  newstr $100 -> %r3
  16  setfield_gc_r %r2, %r3, FieldDescr<stringbuilder.current_buf>
  21  setfield_gc_i %r2, $0, FieldDescr<stringbuilder.current_pos>
  26  setfield_gc_i %r2, $100, FieldDescr<stringbuilder.current_end>
  31  setfield_gc_i %r2, $100, FieldDescr<stringbuilder.total_size>
  36  setfield_gc_r %r0, %r2, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings>
  41  L2:
  41  getfield_gc_r %r0, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings> -> %r2
  46  inline_call_r_v <JitCode 'll_jit_append__stringbuilderPtr_rpy_stringPtr'>, R[%r2, %r1]
  52  -live-
  52  void_return
  53  ---
  53  L1:
  53  goto L2
