[RFC x86_64] patch for improving selection order for string and memory routines.

[H.J. Lu]

On Fri, Feb 5, 2016 at 9:11 AM, Pawar, Amit <Amit.Pawar@amd.com> wrote:
>
> Hi ,
>
> This is a RFC patch to improve selection logic for string and memory routines for x86_64 arch.
>
> Why required (Selection logic means selection order defined in IFUNC function of string and memory routines in GLIBC) ?
> 1) Current selection logic for few routines does not select faster version incase of AMD CPU's though it supports.
> 2) Does not allow to choose fast implementations for both old and new generation CPU's.
> 3) Updating selection order for newer CPU's may require lot of testing to verify the new order for older CPU's. Otherwise
>    new selection order will lead to performance degradation or slower versions are selected though faster one supported.
>

Please open a bug report with detailed descriptions and examples.


-- 
H.J.