[jdk21u-dev] RFR: 8316361: C2: assert(!failure) failed: Missed optimization opportunity in PhaseIterGVN with -XX:VerifyIterativeGVN=10

[Matthias Baesken]

8316361: C2: assert(!failure) failed: Missed optimization opportunity in PhaseIterGVN with -XX:VerifyIterativeGVN=10

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Commit messages:
 - Backport eeb63cd0fad9de1f7182ab97d0f25ac67745aa9e

Changes: https://git.openjdk.org/jdk21u-dev/pull/820/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=820&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316361
  Stats: 50 lines in 2 files changed: 50 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/820.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/820/head:pull/820

PR: https://git.openjdk.org/jdk21u-dev/pull/820