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Re: [PATCH RFC 2/2 V3] Improve 64bit memset for Corei7 with avx2 instruction
- From: Ling Ma <ling dot ma dot program at gmail dot com>
- To: Andreas Jaeger <aj at suse dot com>
- Cc: libc-alpha at sourceware dot org, Ma Ling <ling dot ml at alibaba-inc dot com>
- Date: Mon, 29 Jul 2013 18:46:52 +0800
- Subject: Re: [PATCH RFC 2/2 V3] Improve 64bit memset for Corei7 with avx2 instruction
- References: <CAOGi=dP2EeoV4Lc+do+VTRpw4CToa03UYgeeUua9Cn=8YMxSjg at mail dot gmail dot com> <51F63D9A dot 20509 at suse dot com>
Ok, we will send the compared result soon,
Thanks
Ling
2013/7/29, Andreas Jaeger <aj@suse.com>:
> On 07/29/2013 11:49 AM, Ling Ma wrote:
>> The Attachment includes how to setup cpu2006 gcc.403 to measure
>> memset/memcpy respectively. the readme.txt specify the process.
>> Any problem, please let me know.
>
> Ling,
>
> You're comparing against memcpy_sse2_unaligned but wouldn't the selector
> use __memcpy_ssse3 on current Haswell cpus and thus you should compare
> your new routine against that one?
>
> Andreas
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