8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

[yftsai]

Backport b4490386fe348250e88347526172c1c27ef01eba

---

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-8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

Reviewers

• Paul Hohensee (@phohensee - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev pull/640/head:pull/640
$ git checkout pull/640

Update a local copy of the PR:
$ git checkout pull/640
$ git pull https://git.openjdk.org/jdk17u-dev pull/640/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 640

View PR using the GUI difftool:
$ git pr show -t 640

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/640.diff

[bridgekeeper]

👋 Welcome back yftsai! 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.

[mlbridge]

Webrevs

• 00: Full (4ff4e004)

[phohensee]

/clean

Not clean due to a single trivial context difference in aarch64_neon.ad.

[openjdk]

@yftsai 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:

8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

Reviewed-by: phh

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 19 new commits pushed to the master branch:

• 94618a2: 8289044: ARM32: missing LIR_Assembler::cmove metadata type support
• e66fd86: 8292083: Detected container memory limit may exceed physical machine memory
• 282efe5: 8292888: Bump update version for OpenJDK: jdk-17.0.6
• bf7e3bf: 8290456: remove os::print_statistics()
• 00445e8: 8288985: P11TlsKeyMaterialGenerator should work with ChaCha20-Poly1305
• d3197e7: 8287463: JFR: Disable TestDevNull.java on Windows
• d13038a: 8289695: [TESTBUG] TestMemoryAwareness.java fails on cgroups v2 and crun
• 6d2cddf: 8227651: Tests fail with SSLProtocolException: Input record too big
• b30d962: 8284950: CgroupV1 detection code should consider memory.swappiness
• 2796eca: 8272417: ZGC: fastdebug build crashes when printing ClassLoaderData
• ... and 9 more: https://git.openjdk.org/jdk17u-dev/compare/cf0abb895846c282a2f3b16310ac1db229bf9c8a...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. Possible candidates are the reviewers of this PR (@phohensee) but any other Committer may sponsor as well.

➡️ 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).

[phohensee]

Tagged JBS issue.

[yftsai]

/integrate

[openjdk]

@yftsai
Your change (at version 4ff4e00) is now ready to be sponsored by a Committer.

[RealCLanger]

/integrate

@yftsai please only integrate after receiving JBS approval.

I approved it now.

[phohensee]

/sponsor

[openjdk]

Going to push as commit 328ea9d.
Since your change was applied there have been 20 commits pushed to the master branch:

• c4721bc: 8289146: containers/docker/TestMemoryWithCgroupV1.java fails on linux ppc64le machine with missing Memory and Swap Limit output
• 94618a2: 8289044: ARM32: missing LIR_Assembler::cmove metadata type support
• e66fd86: 8292083: Detected container memory limit may exceed physical machine memory
• 282efe5: 8292888: Bump update version for OpenJDK: jdk-17.0.6
• bf7e3bf: 8290456: remove os::print_statistics()
• 00445e8: 8288985: P11TlsKeyMaterialGenerator should work with ChaCha20-Poly1305
• d3197e7: 8287463: JFR: Disable TestDevNull.java on Windows
• d13038a: 8289695: [TESTBUG] TestMemoryAwareness.java fails on cgroups v2 and crun
• 6d2cddf: 8227651: Tests fail with SSLProtocolException: Input record too big
• b30d962: 8284950: CgroupV1 detection code should consider memory.swappiness
• ... and 10 more: https://git.openjdk.org/jdk17u-dev/compare/cf0abb895846c282a2f3b16310ac1db229bf9c8a...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @yftsai Pushed as commit 328ea9d.

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