8341451: Remove C2HandleAnonOMOwnerStub

[xmas92]

JDK-8319796 has been implemented on all platforms which had previous C2 implementations of LM_LIGHTWEIGHT that made use of C2HandleAnonOMOwnerStub.

The declaration is still left in the shared code, an a couple of platforms have the definitions still lingering. I propose we remove them.

---

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-8341451: Remove C2HandleAnonOMOwnerStub (Enhancement - P4)

Reviewers

• Fei Yang (@RealFYang - Reviewer)
• Christian Hagedorn (@chhagedorn - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/21319/head:pull/21319
$ git checkout pull/21319

Update a local copy of the PR:
$ git checkout pull/21319
$ git pull https://git.openjdk.org/jdk.git pull/21319/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 21319

View PR using the GUI difftool:
$ git pr show -t 21319

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/21319.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back aboldtch! 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]

@xmas92 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:

8341451: Remove C2HandleAnonOMOwnerStub

Reviewed-by: fyang, chagedorn

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 1 new commit pushed to the master branch:

• c6e7e55: 8341091: CDS: Segmented roots array misses roots

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.

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

[openjdk]

@xmas92 The following label will be automatically applied to this pull request:

• hotspot-compiler

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

• 00: Full (f000ae47)

[chhagedorn]

Looks good.

[xmas92]

Thanks for the reviews.
/integrate

[openjdk]

Going to push as commit 3f420fa.
Since your change was applied there have been 21 commits pushed to the master branch:

• d3139b4: 8341000: Open source some of the AWT Window tests
• 4ded283: 8338136: Hotspot should support multiple large page sizes on Windows
• 10402b4: 8341489: ProblemList runtime/cds/appcds/DumpRuntimeClassesTest.java in Xcomp mode
• 6bc3971: 8341316: [macos] javax/swing/ProgressMonitor/ProgressMonitorEscapeKeyPress.java fails sometimes in macos
• e89fd1d: 8341128: open source some 2d graphics tests
• 6f459af: 8340077: Open source few Checkbox tests - Set2
• b6e72ff: 8339403: sun.security.ssl.StatusResponseManager.get swallows interrupt status
• 013250e: 8340432: Open source some MenuBar tests - Set2
• de12fc7: 8339684: ResizeObserver callback interrupts smooth scrolling on Chrome
• ebb4759: 8340625: Open source additional Component tests (part 3)
• ... and 11 more: https://git.openjdk.org/jdk/compare/ff3e849b8a1de3741dcd728636e1a804996f96fe...master

Your commit was automatically rebased without conflicts.

[openjdk]

@xmas92 Pushed as commit 3f420fa.

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