[dpdk-dev] [PATCH v2 1/3] eal/x86: run-time dispatch over memcpy

[Stephen Hemminger]

On Fri,  1 Sep 2017 16:57:00 +0800
Xiaoyun Li <xiaoyun.li at 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.
> In addition, AVX512 instructions set would be compiled only if users
> config it enabled and the compiler supports it.
> 
> Signed-off-by: Xiaoyun Li <xiaoyun.li at intel.com>

Maybe a less intrusive way would be to build multiple shared libraries,
one for each CPU type, then do dynamic binding at startup.