[llvm] r192908 - [AArch64] Add support for NEON scalar three register different instruction

[mcrosier at codeaurora.org]

I'll take care of this ASAP.  Thanks, Tim.

> Hi Chad,
>
> I think you've missed the Constraint field again. The mla/mls versions
> both read and write the destination (accumulator).
>
> Once that's been accounted for you can replace these:
>
>> +// Signed Saturating Doubling Multiply-Add Long
>> +def int_aarch64_neon_vqdmlal : Neon_2Arg_Long_Intrinsic;
>> +
>> +// Signed Saturating Doubling Multiply-Subtract Long
>> +def int_aarch64_neon_vqdmlsl : Neon_2Arg_Long_Intrinsic;
>
> with the two operations "(vqadd accum, (vqdmull lhs, rhs))". If you
> don't have an appropriate scalar "vqadd" you'll be needing one soon
> anyway so it's probably best to just add it.
>
> Cheers.
>
> Tim.
>