RFR: 8305895: Implement JEP 450: Compact Object Headers (Experimental) [v44]

[Thomas Stuefe]

On Wed, 16 Oct 2024 15:37:59 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Problem-list SharedBaseAddress tests on aarch64
>
> src/hotspot/share/oops/compressedKlass.cpp line 185:
> 
>> 183: #endif
>> 184: 
>> 185:   DEBUG_ONLY(sanity_check_after_initialization();)
> 
> This is here twice.

sanity_check_after_initialization is called from both initialization routines, but we only call either one or the other.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20677#discussion_r1808735324