After JDK-8350177, we hit the following assert in C2:

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

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (workspace/open/src/hotspot/share/opto/superword.cpp:2605), pid=327591, tid=327611
# assert(false) failed: Unexpected node in SuperWord truncation: ModI
#
# JRE version: Java(TM) SE Runtime Environment (26.0+7) (fastdebug build 26-ea+7-633)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 26-ea+7-633, mixed mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x1aa4154] VLoopTypes::compute_vector_element_type()+0xcc4

Current CompileTask:
C2:2960 128 b Test::mainTest (858 bytes)

Stack: [0x000070ca8b500000,0x000070ca8b600000], sp=0x000070ca8b5fa670, free space=1001k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1aa4154] VLoopTypes::compute_vector_element_type()+0xcc4 (superword.cpp:2605)
V [libjvm.so+0x1bd0901] VLoopAnalyzer::setup_submodules_helper()+0x91
V [libjvm.so+0x1bd0974] VLoopAnalyzer::setup_submodules()+0x44
V [libjvm.so+0x15738c5] PhaseIdealLoop::auto_vectorize(IdealLoopTree*, VSharedData&)+0x8e5
V [libjvm.so+0x1551b8d] PhaseIdealLoop::build_and_optimize()+0xfdd
V [libjvm.so+0xb58043] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x4f3
V [libjvm.so+0xb4f306] Compile::optimize_loops(PhaseIterGVN&, LoopOptsMode)+0xb6
V [libjvm.so+0xb52071] Compile::Optimize()+0xcc1
V [libjvm.so+0xb5532f] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x1f9f
V [libjvm.so+0x97a437] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x467
V [libjvm.so+0xb64698] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xb58
V [libjvm.so+0xb65868] CompileBroker::compiler_thread_loop()+0x578
V [libjvm.so+0x10bc88b] JavaThread::thread_main_inner()+0x13b
V [libjvm.so+0x1b2eb26] Thread::call_run()+0xb6
V [libjvm.so+0x179e698] thread_native_entry(Thread*)+0x128