RFR: 8327097: GenShen: Align PLAB sizes down rather than up [v6]

[Kelvin Nilsen]

On Wed, 20 Mar 2024 23:06:37 GMT, Y. Srinivas Ramakrishna <ysr at openjdk.org> wrote:

>> Kelvin Nilsen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add comments to clarify behavior of retire_plab
>
> src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.inline.hpp line 46:
> 
>> 44: 
>> 45:   HeapWord* orig_top = top();
>> 46:   size_t addr_as_int = (uintptr_t) orig_top;
> 
> addr_as_int isn't needed anymore, and can be deleted?

Thanks.  Removed.

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PR Review Comment: https://git.openjdk.org/shenandoah/pull/401#discussion_r1536015578