RFR: 8374528: C2 SuperWord: TestAliasingFuzzer.java strengthen no-multiversioning IR rule

Tue Jan 6 10:39:45 UTC 2026

On Mon, 5 Jan 2026 13:09:36 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Now that some of the related issues are fixed, we should strengthen the IR rule for multiversioning.
> 
> I ran the fuzzer test many times on many platforms. That is not proof that we won't find a failing case in the CI within a week. But it also is not helpful to run more tests before integration. If there are failures, we can just backout this change and address the broken example at that point.

Looks good!

> But it also is not helpful to run more tests before integration. If there are failures, we can just backout this change and address the broken example at that point.

Absolutely, I agree with that.

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Marked as reviewed by chagedorn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29036#pullrequestreview-3630390469