[jdk23u] RFR: 8334229: Optimize InterpreterOopMap layout

[Paul Hohensee]

On Wed, 21 Aug 2024 17:25:05 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Semi-clean backport to improve OopMapCache. I actually want this change in 21u-dev, so I am backporting to 23u on its way there. The change is pretty simple, so there is only a little risk.
> 
> It is different from mainline change, because [JDK-8335409](https://bugs.openjdk.org/browse/JDK-8335409) went into 23u first. It removes one of the definitions we move: https://github.com/openjdk/jdk/commit/7ab96c74e2c39f430a5c2f65a981da7314a2385b#diff-d47427bcae3d32d55540df020532bf223ed3cdc6496c3277068e0125fa7be22cL91-L93
> 
> Applying this backport yields no difference in `oopMapCache.hpp` with mainline version, which is what we want.

Marked as reviewed by phh (Reviewer).

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PR Review: https://git.openjdk.org/jdk23u/pull/81#pullrequestreview-2251943249