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

[Roland Westrelin]

Hi Vladimir,

> I prefer shared code change but we would need to test on all platforms 
> which support vectors.

We missed jdk 9 with this one. How much testing on all platforms do we
need to get this in jdk 10?  Would some pre-integration testing jprt be
considered sufficient at the start of a release cycle?

Roland.