RFR: 8305895: Implement JEP 450: Compact Object Headers (Experimental) [v6]

[Leonid Mesnik]

On Fri, 30 Aug 2024 07:37:35 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> make/Images.gmk line 135:
>> 
>>> 133: #
>>> 134: # Param1 - VM variant (e.g., server, client, zero, ...)
>>> 135: # Param2 - _nocoops, _coh, _nocoops_coh, or empty
>> 
>> The -XX:+UseCompactObjectHeaders ssems to incompatible withe zero vm. The zero vm build start failing while generating shared archive with +UseCompactObjectHeaders. Generation should be disabled by default for zero to don't break the build.
>
> No, zero works with +COH, but a small change is needed. I'll post a suggestion inline.

no objection anymore

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/20677#discussion_r1814259543