[jdk25u-dev] RFR: 8354244: Use random data in MinMaxRed_Long data arrays

Wed Jan 28 22:23:54 UTC 2026

Backporting JDK-8354244: Use random data in MinMaxRed_Long data arrays.

This PR simplifies test data in JDK-8307513 tests by switching from shaped data to random data, since the test verifies IR patterns during vectorization rather than branch behavior.

For parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/hotspot/jtreg/compiler/loopopts/superword/MinMaxRed_Long.java

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Commit messages:
 - Backport 567c0c9335c3ff020871115e5a58f3f40fd4b1ad

Changes: https://git.openjdk.org/jdk25u-dev/pull/197/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=197&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354244
  Stats: 84 lines in 1 file changed: 11 ins; 62 del; 11 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/197.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/197/head:pull/197

PR: https://git.openjdk.org/jdk25u-dev/pull/197