On Wed, 10 Dec 2025 23:59:00 GMT, Xueming Shen <[email protected]> wrote:
> Test case ByteNNNVectorTests.MULReduceByteNNNVectorTestsMasked (specifically > **_av.reduceLanes(VectorOperators.MUL, vmask)_**) fails "intermittently" with > the newly added test data **mask[random]** on certain CPUs, likely those > using AVX-512. For example, AMD_EPYC_9J14_96-Core is the one consistently > fails. > > This new mask data was added to **_BOOLEAN_MASK_GENERATORS_** as part of the > changes for JDK-8371446 https://github.com/openjdk/jdk/pull/28593 > > > withToString("mask[random]", (int s) -> { > return fill_boolean(s,_i -> RAND.nextBoolean()); > }) > > > Although this addition does reveals a potential bug in C2's > av.reduceLanes(VectorOperators.MUL, vmask) implementation, it unfortunately > introduces nosy, non-deterministic tier3 test failures in the vector API test > suite. > > This change temporarily remove this data entry from BOOLEAN_MASK_GENERATORS > to reduce the the test instability. > > This change also includes the regenerated test updates from gen-test.sh to > sync the template and the generated test code, addressing the issue reported > in JDK-8373390. Marked as reviewed by psandoz (Reviewer). ------------- PR Review: https://git.openjdk.org/jdk/pull/28757#pullrequestreview-3568588420
