By: Anon (no.delete@this.spam.com), February 24, 2021 8:45 am
Room: Moderated Discussions
Michael S (already5chosen.delete@this.yahoo.com) on February 23, 2021 8:52 am wrote:
> Well, in many common situations, rep movs was quite good since at least Nehalem. And
> up to and including i386 it was quite good in different, but even higher proportion
> of common situations (all small copies with lengths unknown in compile time).
> So, unsatisfactory state of affairs where rep movsb was good in too small amount
> of situations lasted less than 20 years. May be less than 15, I am not too sure.
rep movsb was good on Pentium Pro too, and I think Pentium II.
> Well, in many common situations, rep movs was quite good since at least Nehalem. And
> up to and including i386 it was quite good in different, but even higher proportion
> of common situations (all small copies with lengths unknown in compile time).
> So, unsatisfactory state of affairs where rep movsb was good in too small amount
> of situations lasted less than 20 years. May be less than 15, I am not too sure.
rep movsb was good on Pentium Pro too, and I think Pentium II.