RFR: 8281043: Intrinsify recursive ObjectMonitor locking for PPC64 [v3]

[Martin Doerr]

On Thu, 3 Feb 2022 10:16:45 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> PPC64 implementation of JDK-8277180.
>> 
>> `java -Xms4g -Xmx4g -jar dacapo-9.12-bach.jar h2 -s huge -t 1 -n 1 --max-iterations=35 --variance=5 --verbose --converge`
>> 
>> Before this patch (2 runs):
>> `===== DaCapo 9.12 h2 PASSED in 309753 msec =====`
>> `===== DaCapo 9.12 h2 PASSED in 300755 msec =====`
>> 
>> After:
>> `===== DaCapo 9.12 h2 PASSED in 285144 msec =====`
>> `===== DaCapo 9.12 h2 PASSED in 288255 msec =====`
>
> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update Copyright years.

Thanks for the review! Copyright updated and benchmark results added above.

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PR: https://git.openjdk.java.net/jdk/pull/7305