8282049: AArch64: Use ZR for integer zero immediate volatile stores

[dchuyko]

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8282049: AArch64: Use ZR for integer zero immediate volatile stores

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev pull/664/head:pull/664
$ git checkout pull/664

Update a local copy of the PR:
$ git checkout pull/664
$ git pull https://git.openjdk.org/jdk17u-dev pull/664/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 664

View PR using the GUI difftool:
$ git pr show -t 664

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/664.diff

[bridgekeeper]

👋 Welcome back dchuyko! 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]

@dchuyko 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:

8282049: AArch64: Use ZR for integer zero immediate volatile stores

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 5 new commits pushed to the master branch:

• a18e936: 8274563: jfr/event/oldobject/TestClassLoaderLeak.java fails when GC cycles are not happening
• b196bc4: 8277411: C2 fast_unlock intrinsic on AArch64 has unnecessary ownership check
• 061ddca: 8280124: Reduce branches decoding latin-1 chars from UTF-8 encoded bytes
• 486cffe: 8282347: AARCH64: Untaken branch in has_negatives stub
• 36dd0a7: 8270848: Redundant unsafe opmask register allocation in some instruction patterns.

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.

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➡️ 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).

[mlbridge]

Webrevs

• 01: Full - Incremental (05b53e53)
• 00: Full (f5d4e9fb)

[dchuyko]

/integrate

[openjdk]

@dchuyko
Your change (at version 05b53e5) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

Got the approval.

[openjdk]

Going to push as commit 46f94ad.
Since your change was applied there have been 6 commits pushed to the master branch:

• 6f6b072: 8272776: NullPointerException not reported
• a18e936: 8274563: jfr/event/oldobject/TestClassLoaderLeak.java fails when GC cycles are not happening
• b196bc4: 8277411: C2 fast_unlock intrinsic on AArch64 has unnecessary ownership check
• 061ddca: 8280124: Reduce branches decoding latin-1 chars from UTF-8 encoded bytes
• 486cffe: 8282347: AARCH64: Untaken branch in has_negatives stub
• 36dd0a7: 8270848: Redundant unsafe opmask register allocation in some instruction patterns.

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @dchuyko Pushed as commit 46f94ad.

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