[lworld] RFR: 8376171: [lworld] Enable storing the hash code in the mark word of value objects [v3]

[Tobias Hartmann]

On Tue, 27 Jan 2026 13:59:55 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> I took this from `ObjectSynchronizer::FastHashCode` but I can convert it back to `mark()` if you think it's not needed.
>
> I "think" `ObjectSynchronizer::FastHashCode` needs it to "acquire" the monitor object in the else branch inside that function.

Right, I also think the acquire is not needed here. I changed it back.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1954#discussion_r2732178102