The attached Java Fuzzer test starts to fail after JDK-8269746 with the following assertion:

To reproduce:
$ java -Xcomp -XX:-TieredCompilation -XX:CompileOnly=Test Test.java
$ java -Xcomp -XX:-TieredCompilation -XX:CompileOnly=Reduced Reduced.java

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/opt/mach5/mesos/work_dir/slaves/3c846bae-ce30-4a97-93ee-9fef4497ccb6-S79182/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/61fcc7a7-729c-4122-bd17-8b2b15316607/runs/5aa598ae-f0b4-46a1-a038-f527f0e2d1f0/workspace/open/src/hotspot/share/opto/loopnode.cpp:4910), pid=4924, tid=4938
# assert(!had_error) failed: bad dominance
#
# JRE version: Java(TM) SE Runtime Environment (17.0+32) (fastdebug build 17-ea+32-LTS-2679)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 17-ea+32-LTS-2679, compiled mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x1320e82] PhaseIdealLoop::compute_lca_of_uses(Node*, Node*, bool)+0x6e2
#
............
Command Line: -Xmx1G -Xcomp -Xbatch -XX:-TieredCompilation -XX:CompileOnly=Test -XX:CompileCommand=quiet Test
............
Current thread (0x00007f19484810d0): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=4938, stack(0x00007f19380fe000,0x00007f19381ff000)]


Current CompileTask:
C2: 274 4 b Test::vMeth (185 bytes)

Stack: [0x00007f19380fe000,0x00007f19381ff000], sp=0x00007f19381f9180, free space=1004k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1320e82] PhaseIdealLoop::compute_lca_of_uses(Node*, Node*, bool)+0x6e2
V [libjvm.so+0x1321230] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x1d0
V [libjvm.so+0x132180a] PhaseIdealLoop::build_loop_late(VectorSet&, Node_List&, Node_Stack&)+0xba
V [libjvm.so+0x1322177] PhaseIdealLoop::build_and_optimize(LoopOptsMode)+0x507
V [libjvm.so+0xa37c70] PhaseIdealLoop::verify(PhaseIterGVN&)+0x2f0
V [libjvm.so+0xa27fff] Compile::process_for_post_loop_opts_igvn(PhaseIterGVN&)+0x1f
V [libjvm.so+0xa33a7e] Compile::Optimize()+0x163e
V [libjvm.so+0xa354b8] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x1618
V [libjvm.so+0x84aca6] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x646
V [libjvm.so+0xa45541] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xb71
V [libjvm.so+0xa461e8] CompileBroker::compiler_thread_loop()+0x5a8
V [libjvm.so+0x18da771] JavaThread::thread_main_inner()+0x271
V [libjvm.so+0x18e1ce0] Thread::call_run()+0x100
V [libjvm.so+0x15a8054] thread_native_entry(Thread*)+0x104