From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH 1/3] eal/x86: run-time dispatch over memcpy
Date: Wed, 30 Aug 2017 11:00:40 -0700
Message-ID: <20170830110040.20b037e6@xeon-e3>
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Cc: bruce.richardson@intel.com, dev@dpdk.org, wenzhuo.lu@intel.com,
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To: Xiaoyun Li <xiaoyun.li@intel.com>
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On Fri, 25 Aug 2017 10:06:11 +0800
Xiaoyun Li <xiaoyun.li@intel.com> wrote:

> This patch dynamically selects functions of memcpy at run-time based
> on CPU flags that current machine supports. This patch uses function
> pointers which are bind to the relative functions at constrctor time.
> To make AVX512 instructions pass compilation, enable the switch in
> makefile.
> 
> Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>

Recent versions of GCC also have better ways to handle this.