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

[feilongjiang]

Same as JDK-8369190, but for the RISC-V port.

Testing:

• tier1-3

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

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

Reviewers

• Fei Yang (@RealFYang - Reviewer)
• Ludovic Henry (@luhenry - Committer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/27757/head:pull/27757
$ git checkout pull/27757

Update a local copy of the PR:
$ git checkout pull/27757
$ git pull https://git.openjdk.org/jdk.git pull/27757/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 27757

View PR using the GUI difftool:
$ git pr show -t 27757

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/27757.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

Reviewed-by: fyang, luhenry

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 29 new commits pushed to the master branch:

• 90cf3a2: 8366716: Move SmapsParser from runtime/os/TestTracePageSizes.java into testlib
• 702179e: 8369488: Update to use jtreg 8.1
• 4786f8b: 8369448: C2 SuperWord: refactor VTransform to do move_unordered_reduction_out_of_loop during VTransform::optimize
• ... and 26 more: https://git.openjdk.org/jdk/compare/9b99bc8ef53ad20c4f1cb5d26cffc64b0deb79ad...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.

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

[openjdk]

@feilongjiang The following label will be automatically applied to this pull request:

• hotspot

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 01: Full - Incremental (2aba63c7)
• 00: Full (004d2e04)

[RealFYang]

Thanks!

[feilongjiang]

@luhenry @RealFYang Thanks!

/integrate

[openjdk]

Going to push as commit 7266369.
Since your change was applied there have been 30 commits pushed to the master branch:

• 6d1529c: 8369593: Test H3MalformedResponseTest.testMalformedResponse still times out
• 90cf3a2: 8366716: Move SmapsParser from runtime/os/TestTracePageSizes.java into testlib
• 702179e: 8369488: Update to use jtreg 8.1
• ... and 27 more: https://git.openjdk.org/jdk/compare/9b99bc8ef53ad20c4f1cb5d26cffc64b0deb79ad...master

Your commit was automatically rebased without conflicts.

[openjdk]

@feilongjiang Pushed as commit 7266369.

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

[feilongjiang]

/backport jdk25u

[openjdk]

@feilongjiang the backport was successfully created on the branch backport-feilongjiang-72663695-master in my personal fork of openjdk/jdk25u. To create a pull request with this backport targeting openjdk/jdk25u:master, just click the following link:

➡️ Create pull request

The title of the pull request is automatically filled in correctly and below you find a suggestion for the pull request body:

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!

If you need to update the source branch of the pull then run the following commands in a local clone of your personal fork of openjdk/jdk25u:

$ git fetch https://github.com/openjdk-bots/jdk25u.git backport-feilongjiang-72663695-master:backport-feilongjiang-72663695-master
$ git checkout backport-feilongjiang-72663695-master
# make changes
$ git add paths/to/changed/files
$ git commit --message 'Describe additional changes made'
$ git push https://github.com/openjdk-bots/jdk25u.git backport-feilongjiang-72663695-master

[feilongjiang]

/backport jdk21u-dev

[openjdk]

@feilongjiang the backport was successfully created on the branch backport-feilongjiang-72663695-master in my personal fork of openjdk/jdk21u-dev. To create a pull request with this backport targeting openjdk/jdk21u-dev:master, just click the following link:

➡️ Create pull request

The title of the pull request is automatically filled in correctly and below you find a suggestion for the pull request body:

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!

If you need to update the source branch of the pull then run the following commands in a local clone of your personal fork of openjdk/jdk21u-dev:

$ git fetch https://github.com/openjdk-bots/jdk21u-dev.git backport-feilongjiang-72663695-master:backport-feilongjiang-72663695-master
$ git checkout backport-feilongjiang-72663695-master
# make changes
$ git add paths/to/changed/files
$ git commit --message 'Describe additional changes made'
$ git push https://github.com/openjdk-bots/jdk21u-dev.git backport-feilongjiang-72663695-master