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Re: [PATCH] Enable AVX2 optimized memset only if -mavx2 works
- From: Roland McGrath <roland at hack dot frob dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: myllynen at redhat dot com, Ling Ma <ling dot ma dot program at gmail dot com>, GNU C Library <libc-alpha at sourceware dot org>, Ondrej Bilka <neleai at seznam dot cz>, Liubov Dmitrieva <liubov dot dmitrieva at gmail dot com>, Ling Ma <ling dot ml at alibaba-inc dot com>
- Date: Thu, 10 Jul 2014 11:24:37 -0700 (PDT)
- Subject: Re: [PATCH] Enable AVX2 optimized memset only if -mavx2 works
- Authentication-results: sourceware.org; auth=none
- References: <CAMe9rOq0SeKyFN0f_7AT_xMP2zyDD6gUQG3Jdv+NSTf5VO=0XQ at mail dot gmail dot com> <53B2DD8D dot 4030908 at redhat dot com> <CAMe9rOpxfyxoet24+pbihErfgnYDDZ=kCCjeUSXt_HVsKfwVhg at mail dot gmail dot com>
Changes that claim to be performance improvements always must be
accompanied by reports of benchmark data.