RFR: 8325541: C2 SuperWord: refactor filter / split [v6]

[Emanuel Peter]

On Mon, 12 Feb 2024 18:07:36 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> @vnkozlov how would such an inner class look like?
>> 
>> I'm not yet 100% happy with how the list of `filter_packs_...` looks like. See conversation with Christian: https://github.com/openjdk/jdk/pull/17785#discussion_r1484365725
>> 
>> But I will refactor more around that code soon: I will probably turn some of the filters into split operations (e.g. split if only implemented for smaller vector width, or if dependency blocks vectorization at current vector with but not at a smaller one, etc). For that reason, I'd like to just have the big "laundry-list", and then put things in a nicer shape once all the refactorings have stabilized. Would that be ok?
>
> @eme64 Okay since you have plans to improve it.

Thanks @vnkozlov @chhagedorn for the reviews and suggestions!

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PR Comment: https://git.openjdk.org/jdk/pull/17785#issuecomment-1941885966