[PATCH] [AArch64] Condition codes AL and NV are invalid in the aliases that use inverted condition codes

[Tim Northover]

Hi Artyom,

Thanks for the updated patch. I've got two suggestions, but would be
reasonably happy for a commit anyway:

+ ValidateMCOperand -> validateMCOperand (or possibly
validateMCOperandForAlias or something).
+ Could you put braces around each case? It would allow people to
declare variables in the fragment if they wanted.

The others look fine too.

Cheers.

Tim.