Annoyance with new integer promotion deprecations

[Adam D. Ruppe]

On Tuesday, 6 February 2018 at 00:08:12 UTC, Steven Schveighoffer 
wrote:
> I think the CPU has to do extra work to throw away that high 
> bit, no?

No, the x86 has never had any trouble with this, and I don't 
think ARM does either (worst case you load it as int, then save 
it as byte).

> I still don't love the idea that:
>
> a = a + 1;
>
> fails, but
>
> ++a; a += 1;
>
> works just fine.

indeed. I used to defend that but really the logic goes both 
ways, either way.