   0  getfield_gc_r %r0, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings> -> %r2
   5  -live- %r0, %r1, %r2
   8  goto_if_not_ptr_iszero %r2, L1
  12  new <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab3e5ad6a8> -> %r2
  16  newstr $100 -> %r3
  19  setfield_gc_r %r2, %r3, FieldDescr<stringbuilder.current_buf>
  24  setfield_gc_i %r2, $0, FieldDescr<stringbuilder.current_pos>
  29  setfield_gc_i %r2, $100, FieldDescr<stringbuilder.current_end>
  34  setfield_gc_i %r2, $100, FieldDescr<stringbuilder.total_size>
  39  setfield_gc_r %r0, %r2, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings>
  44  L2:
  44  getfield_gc_r %r0, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings> -> %r2
  49  inline_call_r_v <JitCode 'll_jit_append__stringbuilderPtr_rpy_stringPtr'>, R[%r2, %r1]
  55  -live-
  58  void_return
  59  ---
  59  L1:
  59  goto L2
