[jdk17u-dev] RFR: 8284944: assert(cnt++ < 40) failed: infinite cycle in loop optimization

[Goetz Lindenmaier]

I backport this for parity with 17.0.5-oracle.

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Commit messages:
 - Backport 796494d0fecfb9587e8b68ff1d5c09411cb82f89

Changes: https://git.openjdk.org/jdk17u-dev/pull/513/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=513&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284944
  Stats: 127 lines in 2 files changed: 125 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/513.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/513/head:pull/513

PR: https://git.openjdk.org/jdk17u-dev/pull/513