[AArch64] Redundant AllOne/AllZero patterns?

[Chad Rosier]

Done so in r194733.

>> def Neon_AllZero : PatFrag<(ops), (Neon_movi (i32 0), (i32 14))>;
>> def Neon_AllOne : PatFrag<(ops), (Neon_movi (i32 255), (i32 14))>;
>>
>> Are these redundant?  If so, which should we prefer?
>
> They look it. Personally, I prefer these newer ones, though some
> comment on these special numbers might be in order.
>
> Cheers.
>
> Tim.
>


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