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

[Ningsheng Jian]

Hi Roland,

Thanks for the review.

>> NEON vector MLA instructions can not be generated in some simple
>> multiply-add cases.
>>
>> Bug:
>> https://bugs.openjdk.java.net/browse/JDK-8169697
>>
>
> This is a bug fix and bug fixes can still be pushed without restrictions
> so I see no reason to not go with this:
>
>> In the mean time, Yang also has a more generic fix for this issue,
>> which patches share code and could also fix this issue:
>>
>> http://cr.openjdk.java.net/~njian/8169697/webrev.share/
>
> That looks good to me. Anyone on the compiler side can take a look (and
> sponsor)?

Compared to aarch64 only version, I also prefer this patch.

Thanks,
Ningsheng