RFR: 8294186: AArch64: VectorMaskToLong failed on SVE2 machine with -XX:UseSVE=1 [v2]

Mon Oct 17 08:22:57 UTC 2022

On Wed, 28 Sep 2022 14:31:21 GMT, Eric Liu <eliu at openjdk.org> wrote:

>> C2_MacroAssembler::sve_vmask_tolong would fail on BITPERM supported SVE2 machine with "-XX:UseSVE=1".
>> 
>> `BITPERM` is an optional feature in SVE2. With this feature, VectorMaskToLong has a more efficent implementation. For other cases, it should generate SVE1 code.
>> 
>> [TEST]
>> jdk/incubator/vector, hotspot/compiler/vectorapi passed on BITPERM supported SVE2 machine, with option -XX:UseSVE=(0, 1, 2).
>
> Eric Liu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Refine comment
>   
>   Change-Id: I785817a0068098e9c48221cb391ef776186ef5de

Marked as reviewed by aph (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/10443