denormal on IvyB and Haswell

Article: AMD's Jaguar Microarchitecture
By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), April 6, 2014 8:55 am
Room: Moderated Discussions
Michael S (already5chosen.delete@this.yahoo.com) on April 5, 2014 10:45 am wrote:
>
> That's incorrect.
> Recent "big" Intel cores handle some cases of denormals with
> no penalty, but not all cases and even not all common cases.

Ok. I went by Agner Fog who tends to be really good, and reported that Sandy Bridge had no penalty for "many of these cases". He may have happened to check mostly the ones that work.

Linus
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