RFR: JDK-8262068: Improve G1 Full GC by skipping compaction for regions with high survival ratio [v14]

[Hamlin Li]

On Mon, 12 Apr 2021 12:27:50 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   add sanity check; refine code in update_attribute_table.
>
> Ready to integrate.

Thanks @tschatzl @kstefanj @albertnetymk for reviewing!

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PR: https://git.openjdk.java.net/jdk/pull/2760