RFR: 8294194: [AArch64] Create intrinsics compress and expand [v2]

[Andrew Dinn]

On Mon, 31 Oct 2022 15:32:34 GMT, Stuart Monteith <smonteith at openjdk.org> wrote:

>> The CompressBits and ExpandBits nodes won't even be emitted, so the predicates would be redundant here - this is a consequence of them being intrinsics - otherwise it would be the Java implementations of the methods.
>> I can deal with the CacheWBs in a separate PR.
>
> I've opened https://bugs.openjdk.org/browse/JDK-8296132 , PR to follow.

Thanks Stuart

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PR: https://git.openjdk.org/jdk/pull/10537