RFR: 8365034: G1: Remove num_groups_selected in G1CollectionSet::select_candidates_from_optional_groups as it is unnecessary [v4]

[Thomas Schatzl]

On Fri, 22 Aug 2025 16:12:18 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Thomas Schatzl has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 14 commits:
>> 
>>  - * remove unwanted chagnes
>>  - Merge branch 'master' into 8365034-remove-unnecessary-num_selected_regions
>>  - Merge branch 'master' into 8365034-remove-unnecessary-num_selected_regions
>>  - * ayang review
>>  - Merge branch '8364934-g1collectionset-renaming' into 8365034-remove-unnecessary-num_selected_regions
>>  - Merge branch 'master' into 8364934-g1collectionset-renaming
>>  - Merge branch 'master' into 8364934-g1collectionset-renaming
>>  - * one more renaming: prepare_groups_for_scan() -> prepare_for_scan()
>>  - Merge branch '8364925-improve-program-flow-inc-cset' into 8364934-g1collectionset-renaming
>>  - * ayang review
>>  - ... and 4 more: https://git.openjdk.org/jdk/compare/e1c58f85...b9a66b12
>
> Marked as reviewed by ayang (Reviewer).

Thanks @albertnetymk @walulyai for your reviews

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PR Comment: https://git.openjdk.org/jdk/pull/26674#issuecomment-3219181275