C2: assert(false) failed: unscheduable graph

The attached Java Fuzzer tests starts to fail after JDK-8267687 with the following assertion failure:

To reproduce:
$ java -Xcomp -XX:-TieredCompilation -XX:CompileOnly=Test Test.java
$ java -Xcomp -XX:-TieredCompilation - XX:CompileOnly=Reduced -XX:CompileCommand=dontinline,Reduced::vMeth 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-S79067/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/be546687-12db-4ded-a96b-86062b189919/runs/56ca4e2d-638a-4f38-8b25-3d968f5f0d09/workspace/open/src/hotspot/share/opto/gcm.cpp:276), pid=21370, tid=21386
# assert(false) failed: unscheduable graph
#
# JRE version: Java(TM) SE Runtime Environment (17.0+26) (fastdebug build 17-ea+26-LTS-2439)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 17-ea+26-LTS-2439, compiled mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0xd2ccc2] assert_dom(Block*, Block*, Node*, PhaseCFG const*)+0x1b2
............
Command Line: -Xmx1G -Xcomp -Xbatch -XX:-TieredCompilation -XX:CompileOnly=Test -XX:CompileCommand=quiet Test
............
Current thread (0x00007f799047fc30): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=21386, stack(0x00007f79720f8000,0x00007f79721f9000)]


Current CompileTask:
C2: 7475 64 !b Test::mainTest (910 bytes)

Stack: [0x00007f79720f8000,0x00007f79721f9000], sp=0x00007f79721f3cf0, free space=1007k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xd2ccc2] assert_dom(Block*, Block*, Node*, PhaseCFG const*)+0x1b2
V [libjvm.so+0xd2e448] PhaseCFG::schedule_early(VectorSet&, Node_Stack&)+0x598
V [libjvm.so+0xd374c5] PhaseCFG::global_code_motion()+0x295
V [libjvm.so+0xd3b551] PhaseCFG::do_global_code_motion()+0x51
V [libjvm.so+0xa1cbf3] Compile::Code_Gen()+0x293
V [libjvm.so+0xa2818f] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, DirectiveSet*)+0x164f
V [libjvm.so+0x84959a] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x1ea
V [libjvm.so+0xa38a89] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xfb9
V [libjvm.so+0xa397f8] CompileBroker::compiler_thread_loop()+0x5a8
V [libjvm.so+0x18b2e91] JavaThread::thread_main_inner()+0x271
V [libjvm.so+0x18baa90] Thread::call_run()+0x100
V [libjvm.so+0x15872b4] thread_native_entry(Thread*)+0x104