git: openjdk/jdk17u-dev: 8297642: PhaseIdealLoop::only_has_infinite_loops must detect all loops that never lead to termination

[Goetz Lindenmaier]

Changeset: 1d6db443
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2023-01-16 17:55:12 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/1d6db4435fd97c4ed75c8feba31bfb0cdbe93948

8297642: PhaseIdealLoop::only_has_infinite_loops must detect all loops that never lead to termination

Backport-of: d562d3fcbe22a0443037c5b447e1a41401275814

! src/hotspot/share/opto/loopnode.cpp
+ test/hotspot/jtreg/compiler/loopopts/TestOnlyInfiniteLoops.jasm
+ test/hotspot/jtreg/compiler/loopopts/TestOnlyInfiniteLoopsMain.java