[PATCH v6 1/2] x86: Add comment explaining no Slow_SSE4_2 check in ifunc-sse4_2

[Andreas Schwab]

On Jun 29 2022, Noah Goldstein via Libc-alpha wrote:

> diff --git a/sysdeps/x86_64/multiarch/ifunc-sse4_2.h b/sysdeps/x86_64/multiarch/ifunc-sse4_2.h
> index ee36525bcf..4eb9cca7f0 100644
> --- a/sysdeps/x86_64/multiarch/ifunc-sse4_2.h
> +++ b/sysdeps/x86_64/multiarch/ifunc-sse4_2.h
> @@ -27,6 +27,10 @@ IFUNC_SELECTOR (void)
>  {
>    const struct cpu_features* cpu_features = __get_cpu_features ();
>  
> +  /* This function uses slow sse4.2 instructions (pcmpstri) but since
> +     there is no other optimized implementation keep using.  If an

I think there is something missing at the end of the sentence.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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