Re: [PATCH v2 4/4] __arch_xprod64(): make __always_inline when optimizing for performance

[Arnd Bergmann]

On Sun, Jul 7, 2024, at 19:17, Nicolas Pitre wrote:
> From: Nicolas Pitre <npitre@xxxxxxxxxxxx>
>
> Recent gcc versions started not systematically inline __arch_xprod64()
> and that has performance implications. Give the compiler the freedom to
> decide only when optimizing for size.
>
> Signed-off-by: Nicolas Pitre <npitre@xxxxxxxxxxxx>

Seems reasonable. Just to make sure: do you know if the non-inline
version of xprod_64 ends up producing a more effecient division
result than the __do_div64() code path on arch/arm?

     Arnd