Integrated: 8373724: Assertion failure in TestSignumVector.java with UseAPX

[Jatin Bhateja]

On Fri, 26 Dec 2025 12:31:39 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

> Existing demotable instruction patterns for negI/L_rReg_ndd have 'src' as their second operand, this leads to an failure during register biasing. Changing the NDD demotion flags names to encode explicit operand position i.e. **Flag_ndd_demotable_opr1 and Flag_ndd_demotable_opr2** , splitting commutative flag into seperate new flags and fine tuning assertion checks based on new naming convention fixes the issue.
> 
> Failing test test/hotspot/jtreg/compiler/vectorization/TestSignumVector.java passes with the patch.
> 
> Kindly review and share your feedback.
> 
> Best Regards,
> Jatin
> PS: Validation performed using Intel SDE 9.58.

This pull request has now been integrated.

Changeset: 640343f7
Author:    Jatin Bhateja <jbhateja at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/640343f7d94894b0378ea5b1768eeac203a9aaf8
Stats:     78 lines in 1 file changed: 2 ins; 1 del; 75 mod

8373724: Assertion failure in TestSignumVector.java with UseAPX

Reviewed-by: sviswanathan

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PR: https://git.openjdk.org/jdk/pull/28999