[PATCH] Optimize strchr (x, 0)

[Denis Zaitceff]

On Sat, Mar 9, 2013 at 8:39 PM, Ondřej Bílka <neleai@seznam.cz> wrote:
> On Sat, Mar 09, 2013 at 07:48:02PM +0600, Denis Zaitceff wrote:
>> On Sun, Feb 24, 2013 at 4:43 PM, Ondřej Bílka <neleai@seznam.cz> wrote:
>> >
>> > As strlen is more optimized than rawmemchr it will be more effective
>> > than now. (If rawmemchr(x,0) is faster then it is performance regression of
>> > strlen.)
>>
>> Why do you think it is more optimized?
>
> Test it. If you find architecture where rawmemchr/strchr is faster feel
> free send patch like:
>
> size_t strlen(char *x)
> {
>         return strchr(x,0)-x;
> }

Ok.  What exactly should I test - strlen and strchar from where?
GCC's variants, ones from string2.h or manual asm-variants?