RFR: 8225409: G1: Remove the Hot Card Cache [v2]

[Albert Mingkun Yang]

On Thu, 9 Feb 2023 10:51:31 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Mostly straightforward removing G1 HotCardCache, as no performance benefit is observed for various benchmarks (specjbb, specjvm, dacapo, etc).
>> 
>> Test: tier1-6
>
> Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:
> 
>  - merge
>  - g1-hcc

Thanks for the review.

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PR: https://git.openjdk.org/jdk/pull/12452