8297235: ZGC: assert(regs[i] != regs[j]) failed: Multiple uses of register: rax

[xmas92]

Hi all,

This pull request contains a backport of commit 042b7062 from the openjdk/jdk repository.

The commit being backported was authored by Axel Boldt-Christmas on 13 Dec 2022 and was reviewed by Erik Österlund, Albert Mingkun Yang and Roberto Castañeda Lozano.

Thanks!

---

Progress

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

Issue

• JDK-8297235: ZGC: assert(regs[i] != regs[j]) failed: Multiple uses of register: rax

Reviewers

• Tobias Hartmann (@TobiHartmann - Reviewer)
• Roberto Castañeda Lozano (@robcasloz - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk20 pull/25/head:pull/25
$ git checkout pull/25

Update a local copy of the PR:
$ git checkout pull/25
$ git pull https://git.openjdk.org/jdk20 pull/25/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 25

View PR using the GUI difftool:
$ git pr show -t 25

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk20/pull/25.diff

[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]

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

[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:

8297235: ZGC: assert(regs[i] != regs[j]) failed: Multiple uses of register: rax

Reviewed-by: thartmann, rcastanedalo

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 4 new commits pushed to the master branch:

• 51f0a1c: 8298527: Cygwin's uname -m returns different string than before
• 61ab16f: 8298700: Typo in DocTree comment
• c6f22b4: 8297305: Clarify that javax.lang.model.util.Elements.overrides is irreflexive
• bf78f71: 8295857: Clarify that cleanup code can be skipped when the JVM terminates (e.g. when calling halt())

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

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 (13fb113e)

[TobiHartmann]

Looks good.

[xmas92]

/integrate

[openjdk]

Going to push as commit 581f9f2.
Since your change was applied there have been 9 commits pushed to the master branch:

• 0eeaf6b: 8298649: JFR: RemoteRecordingStream support for checkpoint event sizes beyond u4
• 2791701: 8298296: gc/TestFullGCCount.java fails with "System.gc collections miscounted."
• 0bbc418: 8294902: Undefined Behavior in C2 regalloc with null references
• 9bcdfc4: 8298425: System.console().readLine() hangs in jshell
• 27d4971: 8298520: C2: assert(found_opaque == res) failed: wrong pattern
• 51f0a1c: 8298527: Cygwin's uname -m returns different string than before
• 61ab16f: 8298700: Typo in DocTree comment
• c6f22b4: 8297305: Clarify that javax.lang.model.util.Elements.overrides is irreflexive
• bf78f71: 8295857: Clarify that cleanup code can be skipped when the JVM terminates (e.g. when calling halt())

Your commit was automatically rebased without conflicts.

[openjdk]

@xmas92 Pushed as commit 581f9f2.

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