[PATCH] x86: drop vex_encoding_vex2 enumerator

[H.J. Lu]

On Tue, Jan 14, 2020 at 11:42 PM Jan Beulich <jbeulich@suse.com> wrote:
>
> Documentation clearly says "prefer {2,3}-byte VEX prefix for VEX
> instruction", as opposed to "encode with EVEX prefix" for {evex}. Hence
> there not being a way to VEX-encode an insn should not be an error (not

We can't prefer any VEX prefix on non AVX instructions:

{vex} inc %rax

should be an error.

> even a warning), and with this the separate enumerator becomes unneeded.
> (Really I'm having trouble seeing what {vex2} would be useful for when
> it's just a suggestion hint, not one allowing the programmer to mandate
> the used encoding.)

Please keep it for now.   We are planning to use it in the future.

-- 
H.J.