I ran jdk/incubator/vector/ tests with next flags and fastdebug VM on Ice Lake machine (latest Intel avx512 we have):

  -ea -esa -Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -XX:+TieredCompilation -XX:+DeoptimizeALot

two tests failed during deoptimization (could be intermittent):

jdk/incubator/vector/Byte64VectorTests.java
jdk/incubator/vector/Byte128VectorTests.java

# Internal Error (/workspace/open/src/hotspot/share/prims/vectorSupport.cpp:185), pid=21316, tid=21357
# assert(payload->is_object()) failed: expected 'object' value for scalar-replaced boxed vector but got: NULL
#
# JRE version: Java(TM) SE Runtime Environment (18.0+29) (fastdebug build 18-ea+29-1980)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 18-ea+29-1980, compiled mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x19c411f] VectorSupport::allocate_vector_payload(InstanceKlass*, frame*, RegisterMap*, ScopeValue*, JavaThread*)+0x30f

Stack: [0x00007fcc60409000,0x00007fcc6050a000], sp=0x00007fcc60504290, free space=1004k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x19c411f] VectorSupport::allocate_vector_payload(InstanceKlass*, frame*, RegisterMap*, ScopeValue*, JavaThread*)+0x30f
V [libjvm.so+0x19c41cd] VectorSupport::allocate_vector(InstanceKlass*, frame*, RegisterMap*, ObjectValue*, JavaThread*)+0x6d
V [libjvm.so+0xb2c77a] Deoptimization::realloc_objects(JavaThread*, frame*, RegisterMap*, GrowableArray<ScopeValue*>*, JavaThread*)+0x9ea
V [libjvm.so+0xb321e2] rematerialize_objects(JavaThread*, int, CompiledMethod*, frame&, RegisterMap&, GrowableArray<compiledVFrame*>*, bool&)+0x4d2
V [libjvm.so+0xb341e9] Deoptimization::fetch_unroll_info_helper(JavaThread*, int)+0x4c9
V [libjvm.so+0xb35674] Deoptimization::fetch_unroll_info(JavaThread*, int)+0xb4
v ~DeoptimizationBlob

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~DeoptimizationBlob
J 8012% c2 Byte64VectorTests.RearrangeByte64VectorTests(Ljava/util/function/IntFunction;Ljava/util/function/BiFunction;)V (156 bytes) @ 0x00007fcc66342ac8 [0x00007fcc66342440+0x0000000000000688]
J 6622 c2 java.lang.invoke.LambdaForm$DMH+0x0000000801088c00.invokeStatic(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)V java.base@18-ea (15 bytes) @ 0x00007fcc661ba424 [0x00007fcc661ba3e0+0x0000000000000044]