8355512: Test compiler/vectorization/TestVectorZeroCount.java times out with -XX:TieredStopAtLevel=3

[satyenme]

Backporting JDK-8355512: Test compiler/vectorization/TestVectorZeroCount.java times out with -XX:TieredStopAtLevel=3. Small patch to TestVectorZeroCount test to make it only execute when C2 is enabled. Backporting for parity with oracle. Ran GHA Sanity Checks, local Tier 1 and 2, and adjusted test directly. Patch is clean.

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Progress

• Change must not contain extraneous whitespace
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• JDK-8355512 needs maintainer approval

Issue

• JDK-8355512: Test compiler/vectorization/TestVectorZeroCount.java times out with -XX:TieredStopAtLevel=3 (Bug - P4 - Approved)

Reviewing

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[bridgekeeper]

👋 Welcome back ssubramaniam! 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]

@satyenme 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:

8355512: Test compiler/vectorization/TestVectorZeroCount.java times out with -XX:TieredStopAtLevel=3

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At the time when this comment was updated there had been 14 new commits pushed to the master branch:

• 20ff119: 8327826: Convert javax/swing/border/Test4243289.java applet test to main
• dec439d: 8328030: Convert javax/swing/text/GlyphView/4984669/bug4984669.java applet test to main
• e81a2f8: 8327972: Convert java/awt/FileDialog/SaveFileNameOverrideTest/SaveFileNameOverrideTest.html applet test to main
• ... and 11 more: https://git.openjdk.org/jdk21u-dev/compare/6b6961dcfdcaaaa90561367b3f0ade9e31bb0dc6...master

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

[openjdk]

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

[openjdk]

⚠️ @satyenme 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.

[mlbridge]

Webrevs

• 00: Full (414bf717)

[satyenme]

/approval request for backport of JDK-8355512: Test compiler/vectorization/TestVectorZeroCount.java times out with -XX:TieredStopAtLevel=3

Motivation: Without this change the compiler/vectorization/TestVectorZeroCount.java test will timeout/fail when run with -XX:TieredStopAtLevel=3. With this backport, the test will only be run with C2 and will not fail in the above scenario.

Risk: Low. Ran GHA Sanity Checks, local Tier 1 and 2, and adjusted test directly. Patch is clean. Although change has only be in tip since May 2025, change has been accepted by oracle.

[openjdk]

@satyenme
8355512: The approval request has been created successfully.

[satyenme]

/integrate

[openjdk]

Going to push as commit d08c9f7.
Since your change was applied there have been 19 commits pushed to the master branch:

• dce29c3: 8357672: Extreme font sizes can cause font substitution
• f8bf084: 8341964: Add mechanism to disable different parts of TLS cipher suite
• 6efa88d: 8320769: Remove ill-adviced "make install" target
• ... and 16 more: https://git.openjdk.org/jdk21u-dev/compare/6b6961dcfdcaaaa90561367b3f0ade9e31bb0dc6...master

Your commit was automatically rebased without conflicts.

[openjdk]

@satyenme Pushed as commit d08c9f7.

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