[aarch64-port-dev ] RFR: 8169697: aarch64: vectorized MLA instruction not generated for some test cases

[Yang Zhang]

Hi Vladimir,

Thanks for your review.

>
> What about SubV* and MulV* nodes?
>

After checking commut_op_list, I think MulV*, AndV, OrV and XorV nodes
can also be added. Should I add them all?

SubV* nodes are not commutative, so I don't think they need to be
considered here.

>
> I prefer shared code change but we would need to test on all platforms which support vectors.
>
Yeah, we need to test on all platforms. We already tested previous
patch on x86 and aarch64 platforms, but we don't have other platforms.

Regards
Yang