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Re: [PATCH] i386 copy.S routine optimization?

Yann Sionneau <yann.sionneau%gmail.com@localhost> writes:

> I actually showed this patch to Radoslaw Kujawa who then showed it to
> David Holland, the latter said, I quote:
> "My guess is that it's faster the way it is due to pipelining and
> probable cache stalls;"
> My intention, by sending my previous e-mail, was to seek some
> precisions about the pipeline/cache subtlety
> that would make my patch (which seems "good" from a newbie point of
> view) slower than the current code.
> I am sorry if I mislead you in thinking this patch was tested and good
> for commit.

No worries - I didn't spend a lot of time replying :-)   But seriously,
it's one thing to explain why something is faster or slower, and another
to measure it, and data points would be interesting (but not

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