x86: Add support for Intel AMX instructions

[Jan Beulich]

On 10.07.2020 11:50, Cui, Lili wrote:
> @@ -16223,6 +16537,18 @@ OP_VEX (int bytemode, int sizeflag ATTRIBUTE_UNUSED)
>        return;
>      }
>  
> +  if (bytemode == tmm_mode)
> +    {
> +      modrm.mod = reg;

Please don't - this introduces a latent issue if subsequent code
still wants to look at modrm.mod. It was for a reason that I
suggested doing away with the new OP_VEX_TMM_Fixup() by moving
its logic here.

Jan