   0  getfield_gc_r_pure %r0, FieldDescr<rpython.rlib.mutbuffer.MutableStringBuffer.inst_ll_val> -> %r0
   5  int_add %i0, $0 -> %i0
   9  gc_load_indexed_i %r0, %i0, $<ItemOffset <Char> 1>, $< <FieldOffset <GcStruct rpy_string { hash, chars }> 'chars'> + < ArrayItemsOffset <Array of Char > > >, $<ItemOffset <INT> -1> -> %i0
  16  int_return %i0
