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[Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
- From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 23 Nov 2016 18:00:01 +0000
- Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
- Auto-submitted: auto-generated
- References: <bug-20495-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20495
--- Comment #20 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Florian Weimer from comment #19)
> (In reply to Adam Stylinski from comment #18)
> > Not sure, how do I point my GCC to target the new master of glibc without
> > actually replacing my distro's glibc?
>
> If you build glibc from source, you'll get a script, testrun.sh, which runs
> its argument against the newly built glibc:
>
> https://sourceware.org/glibc/wiki/Testing/Builds
Yes, this definitely fixes it.
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