[jdk19u] RFR: 8290781: Segfault at PhaseIdealLoop::clone_loop_handle_data_uses

[Tobias Hartmann]

Backport of [JDK-8290781](https://bugs.openjdk.java.net/browse/JDK-8290781). Applies cleanly. Approval is pending.

Thanks,
Tobias

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Commit messages:
 - 8290781: Segfault at PhaseIdealLoop::clone_loop_handle_data_uses

Changes: https://git.openjdk.org/jdk19u/pull/31/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk19u&pr=31&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290781
  Stats: 82 lines in 2 files changed: 78 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk19u/pull/31.diff
  Fetch: git fetch https://git.openjdk.org/jdk19u pull/31/head:pull/31

PR: https://git.openjdk.org/jdk19u/pull/31