[jdk17u-dev] RFR: 8297642: PhaseIdealLoop::only_has_infinite_loops must detect all loops that never lead to termination

[Goetz Lindenmaier]

I backport this for parity with 17.0.7-oracle.

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Commit messages:
 - Backport d562d3fcbe22a0443037c5b447e1a41401275814

Changes: https://git.openjdk.org/jdk17u-dev/pull/1058/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1058&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8297642
  Stats: 184 lines in 3 files changed: 153 ins; 9 del; 22 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1058.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1058/head:pull/1058

PR: https://git.openjdk.org/jdk17u-dev/pull/1058