8369616: JavaFrameAnchor on RISC-V has unnecessary barriers and wrong store order in MacroAssembler

[feilongjiang]

Hi all,

This pull request contains a backport of commit 72663695 from the openjdk/jdk repository.

The commit being backported was authored by Feilong Jiang on 14 Oct 2025 and was reviewed by Fei Yang and Ludovic Henry.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8369616 needs maintainer approval

Issue

• JDK-8369616: JavaFrameAnchor on RISC-V has unnecessary barriers and wrong store order in MacroAssembler (Bug - P3 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/2357/head:pull/2357
$ git checkout pull/2357

Update a local copy of the PR:
$ git checkout pull/2357
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/2357/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2357

View PR using the GUI difftool:
$ git pr show -t 2357

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/2357.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back fjiang! 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]

@feilongjiang 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:

8369616: JavaFrameAnchor on RISC-V has unnecessary barriers and wrong store order in MacroAssembler

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 14 new commits pushed to the master branch:

• 13f88dc: 8355387: [jittester] Disable downcasts by default
• 886d96e: 8323803: ConstantOopReadValue::print_on should print 'null' instead of 'nullptr'
• 2f321a5: Merge
• ... and 11 more: https://git.openjdk.org/jdk21u-dev/compare/38baaa916c65fcebeb28b9555b98e4daf3ea85ae...master

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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

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

[openjdk]

⚠️ @feilongjiang 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

• 00: Full (2396e955)

[feilongjiang]

/approval request Clean backport to fix signal handler based profilers on RISC-V

[openjdk]

@feilongjiang
8369616: The approval request has been created successfully.

[feilongjiang]

/integrate

[openjdk]

@feilongjiang
Your change (at version 2396e95) is now ready to be sponsored by a Committer.

[RealFYang]

/sponsor

[openjdk]

Going to push as commit d4d10c8.
Since your change was applied there have been 14 commits pushed to the master branch:

• 13f88dc: 8355387: [jittester] Disable downcasts by default
• 886d96e: 8323803: ConstantOopReadValue::print_on should print 'null' instead of 'nullptr'
• 2f321a5: Merge
• ... and 11 more: https://git.openjdk.org/jdk21u-dev/compare/38baaa916c65fcebeb28b9555b98e4daf3ea85ae...master

Your commit was automatically rebased without conflicts.

[openjdk]

@RealFYang @feilongjiang Pushed as commit d4d10c8.

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