Similar to JDK-8266542, simply running java -XX:-OptoRemoveUseless already crashes the VM:

# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/cfgnode.cpp:1893
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/oracle/jdk/open/src/hotspot/share/opto/cfgnode.cpp:1893), pid=1597067, tid=1597080
# assert(r->in(0) == __null || !r->in(0)->is_Root()) failed: not a specially hidden merge
#
# JRE version: Java(TM) SE Runtime Environment (17.0) (fastdebug build 17-internal+0-LTS-2021-05-04-1333554.tobias...)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 17-internal+0-LTS-2021-05-04-1333554.tobias..., mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x8b1dc4] PhiNode::Ideal(PhaseGVN*, bool)+0x6e4