[jdk17u] RFR: 8271954: C2: assert(false) failed: Bad graph detected in build_loop_late

[Tobias Hartmann]

Backport of [JDK-8271954](https://bugs.openjdk.java.net/browse/JDK-8271954). Applies cleanly. Approval is pending.

Thanks,
Tobias

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Commit messages:
 - 8271954: C2: assert(false) failed: Bad graph detected in build_loop_late

Changes: https://git.openjdk.java.net/jdk17u/pull/96/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=96&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8271954
  Stats: 442 lines in 3 files changed: 428 ins; 0 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/96.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/96/head:pull/96

PR: https://git.openjdk.java.net/jdk17u/pull/96