[PATCH v2] x86: Add %ME for instructions do not need {evex} prefix with memory

[Jan Beulich]

On 03.12.2024 08:59, Haochen Jiang wrote:
> @@ -14,7 +14,7 @@
>      { "vprol%DQ",	{ Vex, EXx, Ib }, PREFIX_DATA },
>      { VEX_W_TABLE (EVEX_W_0F72_R_2) },
>      { Bad_Opcode },
> -    { "%XEvpsra%DQ",	{ Vex, EXx, Ib }, PREFIX_DATA },
> +    { "%MEvpsra%DQ",	{ Vex, EXx, Ib }, PREFIX_DATA },
>      { Bad_Opcode },
>      { VEX_W_TABLE (EVEX_W_0F72_R_6) },
>    },

If already we're aiming at reducing unnecessary {evex} prefixes, I think
we should go a step further and also deal with VPSRAQ being EVEX-only. I.e.
VPSRAD wants to have %ME, but VPSRAQ wants to have no such prefix at all.

Jan