The attached Java Fuzzer test fails with the following assertion after JDK-8319372 which removed some type optimization for CastII nodes (probably unrelated but triggering the issue):

$ java -XX:CompileCommand=compileonly,*Test*::* -Xbatch -XX:-TieredCompilation Test.java
$ java -XX:CompileCommand=compileonly,*Reduced*::* -Xbatch -XX:-TieredCompilation Reduced.java

Output:
 520 Replicate === _ 81 [[ 523 538 626 693 694 775 776 777 778 ]] #vectory<J,4> !orig=[522],[463],[413],[131] !jvms: Reduced::test @ bci:19 (line 10)
 626 AddReductionVL === _ 693 520 [[ 523 ]] no_strict_order !orig=523,[462],[412],[132] !jvms: Reduced::test @ bci:20 (line 10)
 523 AddReductionVL === _ 626 520 [[ 806 134 559 551 ]] no_strict_order !orig=[462],[412],[132] !jvms: Reduced::test @ bci:20 (line 10)

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (c:\sb\prod\1739659512\workspace\open\src\hotspot\share\opto\loopopts.cpp:4584), pid=13500, tid=13964
# assert(false) failed: reduction has ctrl or bad vector_input
#
# JRE version: Java(TM) SE Runtime Environment (25.0+11) (fastdebug build 25-ea+11-LTS-1137)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 25-ea+11-LTS-1137, mixed mode, sharing, compressed oops, compressed class ptrs, g1 gc, windows-amd64)
# Problematic frame:
# V [jvm.dll+0xbf948a] PhaseIdealLoop::move_unordered_reduction_out_of_loop+0x9fa
.............
Command Line: -Xmx1G -XX:+IgnoreUnrecognizedVMOptions -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,*Test*::* -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:StressSeed=1648090214 -Xbatch -XX:+UnlockDiagnosticVMOptions -XX:+StressLCM -XX:+StressGCM -XX:+StressIGVN -XX:+StressCCP -XX:+StressMacroExpansion -XX:+VerifyLoopOptimizations -XX:VerifyIterativeGVN=10 -XX:MaxRAMPercentage=4.16667 -Dtest.boot.jdk=c:\ade\mesos\work_dir\jib-master\install\jdk\23\37\bundles\windows-x64\jdk-23_windows-x64_bin.zip\jdk-23 -Djava.io.tmpdir=c:\sb\prod\1739777846\testoutput\test-support\jtreg_closed_test_hotspot_jtreg_applications_javafuzzer_BigTest_java\tmp -XX:+CreateCoredumpOnCrash Test
.............
C2:1224 3 % b Test::lMeth @ 51 (187 bytes)

Stack: [0x000000cfd6700000,0x000000cfd6800000], sp=0x000000cfd67fb700, free space=1005k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0xbf948a] PhaseIdealLoop::move_unordered_reduction_out_of_loop+0x9fa (loopopts.cpp:4584)
V [jvm.dll+0xbcb07b] PhaseIdealLoop::build_and_optimize+0x11bb (loopnode.cpp:4988)
V [jvm.dll+0x55c3cc] Compile::Optimize+0xb4c (compile.cpp:2418)
V [jvm.dll+0x559396] Compile::Compile+0x1096 (compile.cpp:849)
V [jvm.dll+0x460c69] C2Compiler::compile_method+0x179 (c2compiler.cpp:144)
V [jvm.dll+0x5772ba] CompileBroker::invoke_compiler_on_method+0x7aa (compileBroker.cpp:2331)
V [jvm.dll+0x57480b] CompileBroker::compiler_thread_loop+0x33b (compileBroker.cpp:1976)
V [jvm.dll+0x8c22b2] JavaThread::thread_main_inner+0x282 (javaThread.cpp:777)
V [jvm.dll+0xfb1114] Thread::call_run+0x1b4 (thread.cpp:236)
V [jvm.dll+0xd72791] thread_native_entry+0xe1 (os_windows.cpp:566)
C [ucrtbase.dll+0x26b4c] (no source info available)
C [KERNEL32.DLL+0x14cb0] (no source info available)
C [ntdll.dll+0x7ecdb] (no source info available)