message: Implement intrinsic write_bytes
diff: @@ -308,6 +308,9 @@ pub fn codegen_intrinsic_call<'a, 'tcx: 'a>(
  let uninit_val = uninit_place.to_cvalue(fx);
  ret.write_cvalue(fx, uninit_val);
  };
  + write_bytes, <T> (v dst, v val, v count) {
  + fx.bcx.call_memset(fx.isa, dst, val, count);
  + };
  uninit, <T> () {
  let layout = fx.layout_of(T);
  let stack_slot = fx.bcx.create_stack_slot(StackSlotData {
  