[jdk17] RFR: 8267399: C2: java/text/Normalizer/ConformanceTest.java test failed with assertion

[Roland Westrelin]

Already reviewed under https://github.com/openjdk/jdk/pull/4388

-------------

Commit messages:
 - comment
 - fix

Changes: https://git.openjdk.java.net/jdk17/pull/109/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=109&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267399
  Stats: 75 lines in 2 files changed: 75 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/109.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/109/head:pull/109

PR: https://git.openjdk.java.net/jdk17/pull/109