RFR: 8284960: Integration of JEP 426: Vector API (Fourth Incubator) [v6]

[Xiaohong Gong]

On Thu, 19 May 2022 08:53:31 GMT, Ningsheng Jian <njian at openjdk.org> wrote:

>>> LUT should be generated only if UsePopCountInsturction is false 
>> 
>> Should there be `!UsePopCountInsturction` check then?
>> 
>>> restrict the scope of flag to only scalar popcount operation
>> 
>> Interesting. But AArch64 code does cover vector cases which just adds confusion.
>
>> Interesting. But AArch64 code does cover vector cases which just adds confusion.
> 
> `UsePopCountInsturction` is always true in AArch64. @XiaohongGong removed the `predicate` in aarch64 rules, and I think we can even remove the option check in match_rule_supported().

Ok , I will remove the check for it. Thanks!

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PR: https://git.openjdk.java.net/jdk/pull/8425