8314191: C2 compilation fails with "bad AD file"

[shipilev]

Clean backport to fix recent JDK 21 regression.

Additional testing:

• New test fails without the fix, passes with it
• Linux AArch64 fastdebug tier1 tier2 tier3

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8314191 needs maintainer approval

Issue

• JDK-8314191: C2 compilation fails with "bad AD file" (Bug - P3 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u.git pull/190/head:pull/190
$ git checkout pull/190

Update a local copy of the PR:
$ git checkout pull/190
$ git pull https://git.openjdk.org/jdk21u.git pull/190/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 190

View PR using the GUI difftool:
$ git pr show -t 190

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u/pull/190.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back shade! 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]

⚠️ @shipilev 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 (96a00717)
• 00: Full (adcb4b6a)

[shipilev]

/approval request Fixes a recent C2 regression.

[openjdk]

@shipilev The approval request has been created successfully.

[openjdk]

@shipilev 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:

8314191: C2 compilation fails with "bad AD file"

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 no new commits pushed to the master branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential 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.

[bridgekeeper]

@shipilev This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[shipilev]

@shipilev This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

Aaaaaachoo! (counts as activity)

[phohensee]

The JBS backport request has been approved. :)

[shipilev]

/integrate

[openjdk]

Going to push as commit 37888d2.
Since your change was applied there have been 5 commits pushed to the master branch:

• 9008889: 8316679: C2 SuperWord: wrong result, load should not be moved before store if not comparable
• 0e2a520: 8318951: Additional negative value check in JPEG decoding
• 0679922: 8294535: Add screen capture functionality to PassFailJFrame
• 7f02e4a: 8301846: Invalid TargetDataLine after screen lock when using JFileChooser or COM library
• 6632c8a: 8317374: Add Let's Encrypt ISRG Root X2

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 37888d2.

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