[jdk21u-dev] RFR: 8328107: Shenandoah/C2: TestVerifyLoopOptimizations test failure

[duke]

On Tue, 8 Apr 2025 17:48:56 GMT, Satyen Subramaniam <ssubramaniam at openjdk.org> wrote:

> Backporting JDK-8328107: Shenandoah/C2: TestVerifyLoopOptimizations test failure. Addresses failure found when running `compiler/loopopts/TestVerifyLoopOptimizations.java` test with Shenandoah GC. Fix replaces CountedLoop with a Loop node when a load barrier is expanded on the backedge of the counted loop. Adds test to confirm expected behavior. Ran GHA Sanity Checks, local Tier 1 and 2 tests. Patch is clean.

@satyenme 
Your change (at version f0fa88dc710a96c2ed77293b51573f89b9569600) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/1616#issuecomment-2819079682