8320206: Some intrinsics/stubs missing vzeroupper on x86_64

[sviswa7]

---

Progress

• JDK-8320206 needs maintainer approval
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8320206: Some intrinsics/stubs missing vzeroupper on x86_64 (Enhancement - P3 - Approved)

Reviewing

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$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/75/head:pull/75
$ git checkout pull/75

Update a local copy of the PR:
$ git checkout pull/75
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/75/head

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$ git pr checkout 75

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[bridgekeeper]

👋 Welcome back sviswanathan! 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]

⚠️ @sviswa7 This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[sviswa7]

/approval request This is a clean backport and not dependent on any other backport.,
A very small patch with changes to emit missing vzeroupper instructions at select locations to avoid AVX->SSE transition penalties.,
Please approve.

[openjdk]

@sviswa7
8320206: The approval request was already up to date.

[mlbridge]

Webrevs

• 00: Full (409f0e4b)

[openjdk]

@sviswa7 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:

8320206: Some intrinsics/stubs missing vzeroupper on x86_64

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 26 new commits pushed to the master branch:

• aaee2d7: 8322040: Missing array bounds check in ClassReader.parameter
• 636607b: 8313816: Accessing jmethodID might lead to spurious crashes
• e4056b9: 8321409: Console read line with zero out should zero out underlying buffer in JLine (redux)
• 12915c3: 8261837: SIGSEGV in ciVirtualCallTypeData::translate_from
• e0de68e: 8209595: MonitorVmStartTerminate.java timed out
• 2f65dda: 8316462: sun/jvmstat/monitor/MonitoredVm/MonitorVmStartTerminate.java ignores VM flags
• 840724b: 8317188: G1: Make TestG1ConcRefinementThreads use createTestJvm
• a6c2398: 8317218: G1: Make TestG1HeapRegionSize use createTestJvm
• a565d49: 8317316: G1: Make TestG1PercentageOptions use createTestJvm
• eb6fedc: 8317317: G1: Make TestG1RemSetFlags use createTestJvm
• ... and 16 more: https://git.openjdk.org/jdk21u-dev/compare/3e4adb6fd4c057d87cc0ddf448913ed49d8fc342...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.

➡️ 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).

[sviswa7]

/integrate

[openjdk]

@sviswa7
Your change (at version 409f0e4) is now ready to be sponsored by a Committer.

[TheRealMDoerr]

/sponsor

[openjdk]

Going to push as commit 98fb425.
Since your change was applied there have been 54 commits pushed to the master branch:

• 3465179: 8311588: C2: RepeatCompilation compiler directive does not choose stress seed randomly
• 191fc6b: 8316661: CompilerThread leaks CodeBlob memory when dynamically stopping compiler thread in non-product
• 80c86c2: 8316001: GC: Make TestArrayAllocatorMallocLimit use createTestJvm
• 8517987: 8312428: PKCS11 tests fail with NSS 3.91
• 9e24862: 8313720: C2 SuperWord: wrong result with -XX:+UseVectorCmov -XX:+UseCMoveUnconditionally
• 4c5502d: 8310919: runtime/ErrorHandling/TestAbortVmOnException.java times out due to core dumps taking a long time on OSX
• 03b01a9: 8304292: Memory leak related to ClassLoader::update_class_path_entry_list
• a607f49: 8316309: AArch64: VMError::print_native_stack() crashes on Java native method frame
• 98c94fd: 8264899: C1: -XX:AbortVMOnException does not work if all methods in the call stack are compiled with C1 and there are no exception handlers
• a17d0c4: 8315034: File.mkdirs() occasionally fails to create folders on Windows shared folder
• ... and 44 more: https://git.openjdk.org/jdk21u-dev/compare/3e4adb6fd4c057d87cc0ddf448913ed49d8fc342...master

Your commit was automatically rebased without conflicts.

[openjdk]

@TheRealMDoerr @sviswa7 Pushed as commit 98fb425.

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

[sviswa7]

Thanks a lot @TheRealMDoerr.