8281043: Intrinsify recursive ObjectMonitor locking for PPC64

[TheRealMDoerr]

Clean backport of JDK-8281043. It addresses a performance regression from jdk16.

---

Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8281043: Intrinsify recursive ObjectMonitor locking for PPC64

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk17u-dev pull/150/head:pull/150
$ git checkout pull/150

Update a local copy of the PR:
$ git checkout pull/150
$ git pull https://git.openjdk.java.net/jdk17u-dev pull/150/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 150

View PR using the GUI difftool:
$ git pr show -t 150

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk17u-dev/pull/150.diff

[bridgekeeper]

👋 Welcome back mdoerr! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@TheRealMDoerr This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8281043: Intrinsify recursive ObjectMonitor locking for PPC64

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[mlbridge]

Webrevs

• 00: Full (9299830c)

[TheRealMDoerr]

/integrate

[openjdk]

Going to push as commit 23b7f7e.
Since your change was applied there have been 33 commits pushed to the master branch:

• 02a876f: 8282499: Bump update version for OpenJDK: jdk-17.0.4
• 47f29a3: 8277795: ldap connection timeout not honoured under contention
• 51e7af2: 8276141: XPathFactory set/getProperty method
• 8e13d2f: 8274471: Add support for RSASSA-PSS in OCSP Response
• 6ce19ed: 8282219: jdk/java/lang/ProcessBuilder/Basic.java fails on AIX
• c2a62d7: 8279669: test/jdk/com/sun/jdi/TestScaffold.java uses wrong condition
• 9e9c150: 8276841: Add support for Visual Studio 2022
• 90d83a2: 8272866: java.util.random package summary contains incorrect mixing function in table
• fc57ee6: 8272996: JNDI DNS provider fails to resolve SRV entries when IPV6 stack is enabled
• df5a29c: 8278185: Custom JRE cannot find non-ASCII named module inside
• ... and 23 more: https://git.openjdk.java.net/jdk17u-dev/compare/5159ffd487d858f33eb50f0bb8f2bfb28fcce5ae...master

Your commit was automatically rebased without conflicts.

[openjdk]

@TheRealMDoerr Pushed as commit 23b7f7e.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.