Reported by Tobias with JDK-8223051:

# Internal Error (t:/workspace/open/src/hotspot/share/opto/compile.cpp:3429), pid=577384, tid=462156
# assert(!n->as_Loop()->is_transformed_long_loop()) failed: should have been turned into a counted loop
Current CompileTask:
C2: 33542 3956 4 jdk.jfr.internal.consumer.ConstantMap::resolve (66 bytes)
Stack: [0x0000000f9dc00000,0x0000000f9dd00000]
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0xaf3c41] os::platform_print_native_stack+0xf1 (os_windows_x86.cpp:236)
V [jvm.dll+0xd21ac6] VMError::report+0xfc6 (vmError.cpp:731)
V [jvm.dll+0xd234ae] VMError::report_and_die+0x7de (vmError.cpp:1548)
V [jvm.dll+0xd23b64] VMError::report_and_die+0x64 (vmError.cpp:1341)
V [jvm.dll+0x4cb2c7] report_vm_error+0x117 (debug.cpp:267)
V [jvm.dll+0x48914f] Compile::final_graph_reshaping_main_switch+0x167f (compile.cpp:3429)
V [jvm.dll+0x487965] Compile::final_graph_reshaping_impl+0x4b5 (compile.cpp:2887)
V [jvm.dll+0x48a391] Compile::final_graph_reshaping_walk+0x2c1 (compile.cpp:3593)
V [jvm.dll+0x486d49] Compile::final_graph_reshaping+0x2c9 (compile.cpp:3695)
V [jvm.dll+0x483d16] Compile::Optimize+0x16c6 (compile.cpp:2280)
V [jvm.dll+0x4801ba] Compile::Compile+0x121a (compile.cpp:749)
V [jvm.dll+0x3b91cc] C2Compiler::compile_method+0x12c (c2compiler.cpp:105)
V [jvm.dll+0x4987e0] CompileBroker::invoke_compiler_on_method+0x8e0 (compileBroker.cpp:2226)
V [jvm.dll+0x4969a8] CompileBroker::compiler_thread_loop+0x458 (compileBroker.cpp:1900)
V [jvm.dll+0xcb0037] JavaThread::run+0x327 (thread.cpp:1977)
V [jvm.dll+0xca7124] Thread::call_run+0x1b4 (thread.cpp:401)
V [jvm.dll+0xaf254e] thread_native_entry+0x10e (os_windows.cpp:476)
C [ucrtbase.dll+0x21ffa]
C [KERNEL32.DLL+0x17974]
C [ntdll.dll+0x6a271]

-XX:+CreateCoredumpOnCrash -XX:+UseZGC -XX:+IgnoreUnrecognizedVMOptions -XX:StressLongCountedLoop=1 -XX:MaxRAMPercentage=50 -XX:MaxMetaspaceSize=512m

It seems to be reproducible but only happens with closed tests.