x86: Support Intel UINTR

[Jan Beulich]

On 13.10.2020 08:11, Cui, Lili wrote:
> --- a/gas/testsuite/gas/i386/prefix.s
> +++ b/gas/testsuite/gas/i386/prefix.s
> @@ -367,14 +367,6 @@
>  
>  	nop
>  
> -# repz; rdrand %eax
> -	.byte 0xf3
> -	.byte 0x0f
> -	.byte 0xc7
> -	.byte 0xf0
> -
> -	nop
> -

Instead of outright dropping this, can you see about finding a
suitable replacement encoding to retain what's being tested here?

Jan