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8301489: C1: ShortLoopOptimizer might lift instructions before their inputs #193

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@GoeLin GoeLin commented Sep 22, 2023

I backport this for parity with 17.0.10-oracle.

I think the 21 deferral labeled in the JBS issue is overcome, as the change isn't that new any more and it has been backported to 17, which has much more exposure than the 21 update will have.

Clean backport, test passes, will run through SAP testing that among others runs all headless jtreg tests on most platforms.


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  • Change must not contain extraneous whitespace
  • Commit message must refer to an issue
  • JDK-8301489 needs maintainer approval

Issue

  • JDK-8301489: C1: ShortLoopOptimizer might lift instructions before their inputs (Bug - P3 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u.git pull/193/head:pull/193
$ git checkout pull/193

Update a local copy of the PR:
$ git checkout pull/193
$ git pull https://git.openjdk.org/jdk21u.git pull/193/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 193

View PR using the GUI difftool:
$ git pr show -t 193

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u/pull/193.diff

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bridgekeeper bot commented Sep 22, 2023

👋 Welcome back goetz! 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 openjdk bot changed the title Backport 73d7aa1d2cb037fed69263a1990258866333664d 8301489: C1: ShortLoopOptimizer might lift instructions before their inputs Sep 22, 2023
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openjdk bot commented Sep 22, 2023

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

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openjdk bot commented Sep 22, 2023

⚠️ @GoeLin 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.

@openjdk openjdk bot added the rfr Pull request is ready for review label Sep 22, 2023
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mlbridge bot commented Sep 22, 2023

Webrevs

@openjdk openjdk bot added the approval label Sep 23, 2023
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openjdk bot commented Oct 3, 2023

@GoeLin 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:

8301489: C1: ShortLoopOptimizer might lift instructions before their inputs

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 18 new commits pushed to the master branch:

  • b12961d: 8316933: RISC-V: compiler/vectorapi/VectorCastShape128Test.java fails when using RVV
  • 8f05d86: 8316341: sun/security/pkcs11/PKCS11Test.java needs adjustment on Linux ppc64le Ubuntu 22
  • d3c89cd: 8315606: Open source few swing text/html tests
  • 3130e03: 8315770: serviceability/sa/TestJmapCoreMetaspace.java should run with -XX:-VerifyDependencies
  • ea00fca: 8316468: os::write incorrectly handles partial write
  • e2f32f1: 8316206: Test StretchedFontTest.java fails for Baekmuk font
  • be274aa: 8313575: Refactor PKCS11Test tests
  • ccf8451: 8316199: Remove sun/tools/jstatd/TestJstatd* tests from problemlist for Windows.
  • 768592a: 8314476: TestJstatdPortAndServer.java failed with "java.rmi.NoSuchObjectException: no such object in table"
  • 86a1a44: 8313252: Java_sun_awt_windows_ThemeReader_paintBackground release resources in early returns
  • ... and 8 more: https://git.openjdk.org/jdk21u/compare/fa642371ad548761c7a74c713f4824761a40da38...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.

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

@openjdk openjdk bot added ready Pull request is ready to be integrated and removed approval labels Oct 3, 2023
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GoeLin commented Oct 4, 2023

/integrate

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openjdk bot commented Oct 4, 2023

Going to push as commit 48fa33a.
Since your change was applied there have been 20 commits pushed to the master branch:

  • 89103c6: 8317257: RISC-V: llvm build broken
  • b4bb944: 8316743: RISC-V: Change UseVectorizedMismatchIntrinsic option result to warning
  • b12961d: 8316933: RISC-V: compiler/vectorapi/VectorCastShape128Test.java fails when using RVV
  • 8f05d86: 8316341: sun/security/pkcs11/PKCS11Test.java needs adjustment on Linux ppc64le Ubuntu 22
  • d3c89cd: 8315606: Open source few swing text/html tests
  • 3130e03: 8315770: serviceability/sa/TestJmapCoreMetaspace.java should run with -XX:-VerifyDependencies
  • ea00fca: 8316468: os::write incorrectly handles partial write
  • e2f32f1: 8316206: Test StretchedFontTest.java fails for Baekmuk font
  • be274aa: 8313575: Refactor PKCS11Test tests
  • ccf8451: 8316199: Remove sun/tools/jstatd/TestJstatd* tests from problemlist for Windows.
  • ... and 10 more: https://git.openjdk.org/jdk21u/compare/fa642371ad548761c7a74c713f4824761a40da38...master

Your commit was automatically rebased without conflicts.

@openjdk openjdk bot added the integrated Pull request has been integrated label Oct 4, 2023
@openjdk openjdk bot closed this Oct 4, 2023
@openjdk openjdk bot removed ready Pull request is ready to be integrated rfr Pull request is ready for review labels Oct 4, 2023
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openjdk bot commented Oct 4, 2023

@GoeLin Pushed as commit 48fa33a.

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

@GoeLin GoeLin deleted the GoeLin-backport-73d7aa1d branch October 4, 2023 07:04
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