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Date:      Thu, 30 Mar 2017 19:54:18 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 218203] Implement AVX2 accelerated Fletcher algorithms
Message-ID:  <bug-218203-8-jrN8pllyYD@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-218203-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-218203-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218203

--- Comment #4 from Adam Stylinski <kungfujesus06@gmail.com> ---
Created attachment 181326
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D181326&action=
=3Dedit
SSE4 implementation

Also not as impactful, but definitely measurable is an SSE4 variant.  This =
will
actually run on Atoms and a much larger number of other pre-Haswell CPUs.=
=20=20

The ZFS On Linux version does 8 padds per loop iteration because they are
avoiding the pmovzxdq instruction.  This is probably to be compatible with
SSSE3 and not require SSE4.

--=20
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