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[Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 23 Nov 2016 17:46:57 +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 #19 from Florian Weimer <fweimer at redhat dot com> ---
(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
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