> https://cr.openjdk.java.net/~rkennke/shenandoah-jdk11u-upstream/webrev.05-shared/src/hotspot/share/opto/ifnode.cpp.udiff.html Actually we can put: (req() == 3 && dom->in(2) != in(2)) || // Not same input 2? back in and have no diff with upstream. It's dead code so it doesn't matter if it's there or not. Roland.