[lworld] RFR: 8371357: [lworld] Remove EnableValhalla [v3]

[Paul Hübner]

On Mon, 15 Dec 2025 22:45:46 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> Paul Hübner has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 23 commits:
>> 
>>  - Use the new function for the Parallel changes.
>>  - Merge branch 'lworld' into JDK-8371357
>>  - Remove wrong comment.
>>  - Fix imports.
>>  - Reviewer comments.
>>  - Copyright.
>>  - Revert "Don't synchronize on Double."
>>    
>>    This reverts commit cbf849c2ce6059af2b43b3dd8cb42445eab4df2b.
>>  - Accidentally changed too many enable_preview.
>>  - Make heap dump test require debug VM.
>>  - Change to arguments.
>>  - ... and 13 more: https://git.openjdk.org/valhalla/compare/8c0c190b...58fb031a
>
> src/hotspot/share/oops/markWord.hpp line 134:
> 
>> 132:   // instance state
>> 133:   static const int age_bits                       = 4;
>> 134:   // prototype header bits (fast path instead of klass layout_helper)
> 
> Why drop the word `static` in the comment here?

Static prototypes were part of an older model that no longer exists.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1759#discussion_r2622383158