RFR: 8296773: G1: Factor out hash function for G1CardSet

[Thomas Schatzl]

On Fri, 11 Nov 2022 05:13:57 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this refactoring that removes the inlining of the "hash" in `G1CardSet` to call a common function.
>> This makes experimenting with different hash functions much easier.
>> 
>> Testing: local compilation, gha
>> 
>> Thanks,
>>   Thomas
>
> Looks good.

Thanks @kimbarrett @walulyai for your reviews

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PR: https://git.openjdk.org/jdk/pull/11087