   0  getfield_gc_i_pure %r0, FieldDescr<rpython.rlib.buffer.LLBuffer.inst_raw_cdata> -> %i1
   5  int_add %i1, %i0 -> %i0
   9  strlen %r1 -> %i1
  12  residual_call_ir_v $<* fn copy_string_to_raw>, I[%i0, $0, %i1], R[%r1], <CallDescr(riii) EF=0 OS_STR_COPY_TO_RAW>
  22  void_return
