Some small bug fixes related to UseFieldFlattening. Can also be recreated for jdk master. Just posting it here for reference.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8387800: [lworld] PPC64 field flattening bugs in JEP 401 Changes: https://git.openjdk.org/valhalla/pull/2630/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2630&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8387800 Stats: 6 lines in 3 files changed: 1 ins; 0 del; 5 mod Patch: https://git.openjdk.org/valhalla/pull/2630.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2630/head:pull/2630 PR: https://git.openjdk.org/valhalla/pull/2630
