RFR: 8338995: New Object to ObjectMonitor mapping: PPC64 implementation [v4]

[Martin Doerr]

On Wed, 18 Sep 2024 14:19:20 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> PPC64 implementation of [JDK-8315884](https://bugs.openjdk.org/browse/JDK-8315884).
>
> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Consistently use CCR0 in compiler_fast_lock_lightweight_object and compiler_fast_unlock_lightweight_object

Thanks for reviewing! I have rerun the `LockUnlock` micro benchmarks and didn't see any significant performance difference / regression. (The results are not very stable on the machine.)

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

PR Comment: https://git.openjdk.org/jdk/pull/20922#issuecomment-2359377440