[Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20495

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
See:

https://sourceware.org/ml/libc-alpha/2016-08/msg00741.html

But it only works for machines supporting XGETBV with ECX == 1.

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