RFR: 8318507: G1: Improve remset clearing for humongous candidates [v2]

[Albert Mingkun Yang]

On Mon, 23 Oct 2023 07:41:05 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this small cleanup that merges two calls to `HeapRegionRemSet::clear()/HeapRegionRemSet::set_state_complete()` to a single call to `clear()` with appropriate parameters.
>> 
>> Also remove now obsolete asserts that are done in `clear()` already; actually the second one is wrong, there may be code roots attached to the region.
>> 
>> Testing: gha, tier1-5 almost done
>> 
>> Thanks,
>>   Thomas
>
> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add assert

Marked as reviewed by ayang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/16270#pullrequestreview-1691887521