8326638: Crash in PhaseIdealLoop::remix_address_expressions due to unexpected Region instead of Loop

[luchenlin]

I backport this for parity with 11.0.24-oracle.
No code change, only code line change in src/hotspot/share/opto/loopopts.cpp, so make it clean.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8326638 needs maintainer approval

Issue

• JDK-8326638: Crash in PhaseIdealLoop::remix_address_expressions due to unexpected Region instead of Loop (Bug - P3 - Approved)

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[bridgekeeper]

👋 Welcome back andrewlu! 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.

[mlbridge]

Webrevs

• 00: Full (2d39c9fe)

[luchenlin]

/clean

[openjdk]

@luchenlin This backport pull request is now marked as clean

[openjdk]

⚠️ @luchenlin This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[openjdk]

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

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

8326638: Crash in PhaseIdealLoop::remix_address_expressions due to unexpected Region instead of Loop

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 6 new commits pushed to the master branch:

• 6c0a88d: 8271142: package help is not displayed for missing X11/extensions/Xrandr.h
• 2a78f2f: Merge
• 5c5687d: 8322750: Test "api/java_awt/interactive/SystemTrayTests.html" failed because A blue ball icon is added outside of the system tray
• a4a5c7f: 8276125: RunThese24H.java SIGSEGV in JfrThreadGroup::thread_group_id
• f6e6eef: 8326938: [11u] JDK-8214908 broke two CTW tests
• a582e11: 8281507: Two javac tests have bad jtreg @clean tags

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[luchenlin]

/integrate

[openjdk]

Going to push as commit bc14b9f.
Since your change was applied there have been 7 commits pushed to the master branch:

• 4ef8db8: 8318580: "javax/swing/MultiMonitor/MultimonVImage.java failing with Error. Can't find library: /open/test/jdk/java/awt/regtesthelpers" after JDK-8316053
• 6c0a88d: 8271142: package help is not displayed for missing X11/extensions/Xrandr.h
• 2a78f2f: Merge
• 5c5687d: 8322750: Test "api/java_awt/interactive/SystemTrayTests.html" failed because A blue ball icon is added outside of the system tray
• a4a5c7f: 8276125: RunThese24H.java SIGSEGV in JfrThreadGroup::thread_group_id
• f6e6eef: 8326938: [11u] JDK-8214908 broke two CTW tests
• a582e11: 8281507: Two javac tests have bad jtreg @clean tags

Your commit was automatically rebased without conflicts.

[openjdk]

@luchenlin Pushed as commit bc14b9f.

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