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

[luchenlin]

I backport this for parity with 21.0.3-oracle.

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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)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/317/head:pull/317
$ git checkout pull/317

Update a local copy of the PR:
$ git checkout pull/317
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/317/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 317

View PR using the GUI difftool:
$ git pr show -t 317

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/317.diff

Webrev

Link to Webrev Comment

[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.

[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.

[mlbridge]

Webrevs

• 01: Full - Incremental (859915b0)
• 00: Full (f02b664f)

[openjdk]

@luchenlin 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:

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.

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➡️ 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 e071843.

[openjdk]

@luchenlin Pushed as commit e071843.

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