   0  getfield_gc_r_pure %r0, FieldDescr<rpython.rlib.buffer.StringBuffer.inst_value> -> %r0
   5  -live- %i0, %r0
   8  goto_if_not_int_lt %i0, $0, L1
  13  strlen %r0 -> %i1
  16  int_add %i0, %i1 -> %i0
  20  L2:
  20  strgetitem %r0, %i0 -> %i1
  24  int_return %i1
  26  ---
  26  L1:
  26  goto L2
