The attached Java Fuzzer test starts to fail after JDK-8252372 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/0c72054a-24ab-4dbb-944f-97f9341a1b96-S34703/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/247a8232-5dbb-4725-b447-2bd89d2efd4c/runs/35076a8c-95e7-4b2e-a59b-644c9012a433/workspace/open/src/hotspot/share/opto/loopnode.cpp:5856), pid=25245, tid=25258
# assert(false) failed: Bad graph detected in build_loop_late
#
# JRE version: Java(TM) SE Runtime Environment (20.0+15) (fastdebug build 20-ea+15-1019)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 20-ea+15-1019, compiled mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x14b5f27] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x187
............
Command Line: -Xcomp -XX:-TieredCompilation -XX:CompileOnly=Test --add-modules=ALL-DEFAULT jdk.compiler/com.sun.tools.javac.launcher.Main Test.java
............
Current CompileTask:
C2: 2363 161 !b Test::mainTest (536 bytes)

Stack: [0x00007f137d147000,0x00007f137d248000], sp=0x00007f137d241ff0, free space=1003k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x14b5f27] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x187 (loopnode.cpp:5856)
V [libjvm.so+0x14b66e2] PhaseIdealLoop::build_loop_late(VectorSet&, Node_List&, Node_Stack&)+0xb2
V [libjvm.so+0x14b7058] PhaseIdealLoop::build_and_optimize()+0x4f8
V [libjvm.so+0xaff221] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x261
V [libjvm.so+0xafb9f3] Compile::Optimize()+0xe53
V [libjvm.so+0xafdcad] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x15ad
V [libjvm.so+0x90e3b5] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x675
V [libjvm.so+0xb0c1fc] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xb1c
V [libjvm.so+0xb0cfc8] CompileBroker::compiler_thread_loop()+0x5a8
V [libjvm.so+0x106ca00] JavaThread::thread_main_inner()+0x230
V [libjvm.so+0x1a6cae0] Thread::call_run()+0x100
V [libjvm.so+0x1708723] thread_native_entry(Thread*)+0x103