RFR: 8305895: Implement JEP 450: Compact Object Headers (Experimental) [v21]

[Thomas Stuefe]

On Wed, 18 Sep 2024 23:49:34 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   JVMCI support
>
> src/hotspot/share/oops/compressedKlass.cpp line 242:
> 
>> 240:   } else {
>> 241: 
>> 242:     // Traditional (non-compact) header mode)
> 
> Extra )

Will fix

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PR Review Comment: https://git.openjdk.org/jdk/pull/20677#discussion_r1766676702