At least 29 vector API tests crashed with

# Internal Error (/home/katya/work/JavaSE/Hotspot/ws/jdk.panama-dev/open/src/hotspot/share/code/debugInfo.hpp:72), pid=12220, tid=12240
# assert(is_location()) failed: must be
#
# JRE version: Java(TM) SE Runtime Environment (15.0) (fastdebug build 15-internal+0-2020-05-01-1822234.katya...)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 15-internal+0-2020-05-01-1822234.katya..., compiled mode, sharing, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x186e314] VectorSupport::allocate_vector(InstanceKlass*, frame*, RegisterMap*, ObjectValue*, Thread*)+0x184
#

--------------- T H R E A D ---------------

Current thread (0x00007efe18380800): JavaThread "MainThread" [_thread_in_vm, id=9889, stack(0x00007efdf1588000,0x00007efdf1689000)]

Stack: [0x00007efdf1588000,0x00007efdf1689000], sp=0x00007efdf1684430, free space=1009k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x186e314] VectorSupport::allocate_vector(InstanceKlass*, frame*, RegisterMap*, ObjectValue*, Thread*)+0x184
V [libjvm.so+0xa70a9d] Deoptimization::realloc_objects(JavaThread*, frame*, RegisterMap*, GrowableArray<ScopeValue*>*, Thread*)+0xa3d
V [libjvm.so+0xa74af6] Deoptimization::fetch_unroll_info_helper(JavaThread*, int)+0x5b6


Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~UncommonTrapBlob
J 3832 c2 jdk.incubator.vector.Byte512Vector.lambda$iotaShuffle$1(III)Ljdk/internal/vm/vector/VectorSupport$VectorShuffle; jdk.incubator.vector@15-internal (16 bytes) @ 0x00007efe0d2ee740 [0x00007efe0d2ee720+0x0000000000000020]
J 3838 c2 jdk.incubator.vector.Byte512Vector$$Lambda$52+0x0000000800bb13e8.apply(III)Ljdk/internal/vm/vector/VectorSupport$VectorShuffle; jdk.incubator.vector@15-internal (7 bytes) @ 0x00007efe0d2f1568 [0x00007efe0d2f1520+0x0000000000000048]
J 3837 c2 jdk.internal.vm.vector.VectorSupport.shuffleIota(Ljava/lang/Class;Ljava/lang/Class;Ljdk/internal/vm/vector/VectorSupport$VectorSpecies;IIIILjdk/internal/vm/vector/VectorSupport$ShuffleIotaOperation;)Ljdk/internal/vm/vector/VectorSupport$VectorShuffle; java.base@15-internal (37 bytes) @ 0x00007efe0d2f18b0 [0x00007efe0d2f1860+0x0000000000000050]
j jdk.incubator.vector.Byte512Vector.iotaShuffle(IIZ)Ljdk/incubator/vector/Byte512Vector$Byte512Shuffle;+23 jdk.incubator.vector@15-internal
j jdk.incubator.vector.Byte512Vector.iotaShuffle(IIZ)Ljdk/incubator/vector/AbstractShuffle;+4 jdk.incubator.vector@15-internal
J 3830 c2 jdk.incubator.vector.AbstractSpecies.iotaShuffle(IIZ)Ljdk/incubator/vector/VectorShuffle; jdk.incubator.vector@15-internal (28 bytes) @ 0x00007efe0d2ef8b8 [0x00007efe0d2ef840+0x0000000000000078]
J 3761 c2 jdk.incubator.vector.VectorShuffle.iota(Ljdk/incubator/vector/VectorSpecies;IIZ)Ljdk/incubator/vector/VectorShuffle; jdk.incubator.vector@15-internal (15 bytes) @ 0x00007efe0d2d80fc [0x00007efe0d2d80c0+0x000000000000003c]
j jdk.incubator.vector.Byte512Vector.slice(I)Ljdk/incubator/vector/Byte512Vector;+68 jdk.incubator.vector@15-internal
j jdk.incubator.vector.Byte512Vector.slice(I)Ljdk/incubator/vector/ByteVector;+2 jdk.incubator.vector@15-internal
J 3694 c2 VectorHash.hashCodeVectorGenericShift([BLjdk/incubator/vector/VectorSpecies;Ljdk/incubator/vector/VectorSpecies;Ljdk/incubator/vector/VectorSpecies;ILjdk/incubator/vector/IntVector;)I (182 bytes) @ 0x00007efe0d2c4d1c [0x00007efe0d2c48c0+0x000000000000045c]
J 3693 c2 VectorHash.hashCodeVector512Shift([B)I (20 bytes) @ 0x00007efe0d2bfe00 [0x00007efe0d2bfdc0+0x0000000000000040]
j VectorHash.assertHashCode([B)V+62
j VectorHash.lambda$main$0(Ljava/lang/Object;Ljava/lang/Object;)V+27
J 3249 c2 VectorHash$$Lambda$26+0x0000000800bea518.accept(Ljava/lang/Object;Ljava/lang/Object;)V (6 bytes) @ 0x00007efe0d021b68 [0x00007efe0d021b20+0x0000000000000048]
j java.util.concurrent.ConcurrentHashMap.forEach(Ljava/util/function/BiConsumer;)V+56 java.base@15-internal
J 3247 c2 java.util.Properties.forEach(Ljava/util/function/BiConsumer;)V java.base@15-internal (9 bytes) @ 0x00007efe0cfa08f4 [0x00007efe0cfa0840+0x00000000000000b4]
j VectorHash.main([Ljava/lang/String;)V+10
v ~StubRoutines::call_stub
J 662 jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object; java.base@15-internal (0 bytes) @ 0x00007efe0ccd538b [0x00007efe0ccd52e0+0x00000000000000ab]
J 660 c2 jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object; java.base@15-internal (117 bytes) @ 0x00007efe0ccd6334 [0x00007efe0ccd6220+0x0000000000000114]
J 659 c2 jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object; java.base@15-internal (10 bytes) @ 0x00007efe0ccd69bc [0x00007efe0ccd6940+0x000000000000007c]
J 628 c2 java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object; java.base@15-internal (65 bytes) @ 0x00007efe0ccc8c80 [0x00007efe0ccc8c00+0x0000000000000080]
j com.sun.javatest.regtest.agent.MainWrapper$MainThread.run()V+172
J 2959 c2 java.lang.Thread.run()V java.base@15-internal (17 bytes) @ 0x00007efe0d18e440 [0x00007efe0d18e3c0+0x0000000000000080]
v ~StubRoutines::call_stub


when running with c2 jit compiler in -Xcomp mode.

The list of failed tests:
jdk/incubator/vector/Byte128VectorTests.java
jdk/incubator/vector/Byte256VectorTests.java
jdk/incubator/vector/Byte512VectorTests.java
jdk/incubator/vector/Byte64VectorTests.java
jdk/incubator/vector/ByteMaxVectorTests.java
jdk/incubator/vector/Double128VectorTests.java
jdk/incubator/vector/Double256VectorTests.java
jdk/incubator/vector/Double512VectorTests.java
jdk/incubator/vector/DoubleMaxVectorTests.java
jdk/incubator/vector/Float128VectorTests.java
jdk/incubator/vector/Float256VectorTests.java
jdk/incubator/vector/Float512VectorTests.java
jdk/incubator/vector/Float64VectorTests.java
jdk/incubator/vector/FloatMaxVectorTests.java
jdk/incubator/vector/Int128VectorTests.java
jdk/incubator/vector/Int256VectorTests.java
jdk/incubator/vector/Int512VectorTests.java
jdk/incubator/vector/Int64VectorTests.java
jdk/incubator/vector/IntMaxVectorTests.java
jdk/incubator/vector/Long128VectorTests.java
jdk/incubator/vector/Long256VectorTests.java
jdk/incubator/vector/Long512VectorTests.java
jdk/incubator/vector/LongMaxVectorTests.java
jdk/incubator/vector/Short128VectorTests.java
jdk/incubator/vector/Short256VectorTests.java
jdk/incubator/vector/Short512VectorTests.java
jdk/incubator/vector/Short64VectorTests.java
jdk/incubator/vector/ShortMaxVectorTests.java
jdk/incubator/vector/VectorHash.java


The crash is seen in vectorIntrinsics btanch.

To reproduce the issue run for example VectorHash.java:
> jtreg -a -agentvm -timeoutFactor:4 -va -jdk:build/linux-x64/images/jdk
  -vmoptions:"-ea -esa -Xcomp -XX:-TieredCompilation"
  -dir:open/test/jdk jdk/incubator/vector/VectorHash.java