Re: [PATCH] x86/fred: Optimize the FRED entry by prioritizing high-probability event dispatching

["H. Peter Anvin" <hpa@xxxxxxxxx>]

> In short, seems that __builtin_expect not work with switch(), at least for
>   gcc version 8.5.0 20210514(RHEL).

For forward-facing optimizations, please don't use an ancient version of 
gcc as the benchmark.

	-hpa