Generated test crashed with
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (open/src/hotspot/share/opto/matcher.cpp:1785), pid=29345, tid=29357
#  assert(mem == (Node*)1 || mem == mem2) failed: multiple Memories being matched at once?
#
# JRE version: Java(TM) SE Runtime Environment (15.0+13) (fastdebug build 15-ea+13-487)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 15-ea+13-487, compiled mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# V  [libjvm.so+0x1109778]  Matcher::ReduceInst_Interior(State*, int, Node*&, MachNode*, unsigned int)+0x3d8
#
# Core dump will be written. Default location: Core dumps may be processed with "/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e %P %I %h" (or dumping to /tmp/fuzzer.tmp.vs6e5d5ce2/core.29345)
#
# If you would like to submit a bug report, please visit:
#   https://bugreport.java.com/bugreport/crash.jsp
#

---------------  S U M M A R Y ------------

Command Line: -Xmx1G -Xcomp -Xbatch -XX:CompileOnly=Test Test

Host: AMD EPYC 7551 32-Core Processor, 16 cores, 62G, Oracle Linux Server release 7.7
Time: Mon Mar  9 06:07:43 2020 GMT elapsed time: 2 seconds (0d 0h 0m 2s)

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

Current thread (0x00007fa6e853c800):  JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=29357, stack(0x00007fa6c0711000,0x00007fa6c0812000)]


Current CompileTask:
C2:   2518   16   !b  4       Test::mainTest (855 bytes)

Stack: [0x00007fa6c0711000,0x00007fa6c0812000],  sp=0x00007fa6c080cb00,  free space=1006k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x1109778]  Matcher::ReduceInst_Interior(State*, int, Node*&, MachNode*, unsigned int)+0x3d8
V  [libjvm.so+0x11095fd]  Matcher::ReduceInst_Interior(State*, int, Node*&, MachNode*, unsigned int)+0x25d
V  [libjvm.so+0x1109c88]  Matcher::ReduceInst(State*, int, Node*&)+0x4d8
V  [libjvm.so+0x110e859]  Matcher::match_tree(Node const*)+0x329
V  [libjvm.so+0x1111da1]  Matcher::xform(Node*, int)+0xc51
V  [libjvm.so+0x1115fa5]  Matcher::match()+0xd05
V  [libjvm.so+0x86a224]  Compile::Code_Gen()+0x84
V  [libjvm.so+0x86e561]  Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0x1171
V  [libjvm.so+0x6dc6b0]  C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0x110
V  [libjvm.so+0x87afac]  CompileBroker::invoke_compiler_on_method(CompileTask*)+0x2cc
V  [libjvm.so+0x87bf48]  CompileBroker::compiler_thread_loop()+0x458
V  [libjvm.so+0x152f356]  JavaThread::thread_main_inner()+0x226
V  [libjvm.so+0x15343d6]  Thread::call_run()+0xf6
V  [libjvm.so+0x1265a36]  thread_native_entry(Thread*)+0x116

Register to memory mapping:

RAX=0x00007fa6f2603000 points into unknown readable memory: 58 00 00 00 00 00 00 00
RBX=0x00007fa69c1879b0 points into unknown readable memory: c8 50 85 f1 a6 7f 00 00
RCX=0x00007fa6f1510c70: <offset 0x00000000017d9c70> in /home/lmesnik/jenkins/workspace/JavaFuzzer/jdk/lib/server/libjvm.so at 0x00007fa6efd37000
RDX=0x00007fa6f1510d18: <offset 0x00000000017d9d18> in /home/lmesnik/jenkins/workspace/JavaFuzzer/jdk/lib/server/libjvm.so at 0x00007fa6efd37000
RSP=0x00007fa6c080cb00 is pointing into the stack for thread: 0x00007fa6e853c800
RBP=0x00007fa6c080cb80 is pointing into the stack for thread: 0x00007fa6e853c800
RSI=0x00000000000006f9 is an unknown value
RDI=0x00007fa6f1510a50: <offset 0x00000000017d9a50> in /home/lmesnik/jenkins/workspace/JavaFuzzer/jdk/lib/server/libjvm.so at 0x00007fa6efd37000
R8 =0x00007fa69c1879b0 points into unknown readable memory: c8 50 85 f1 a6 7f 00 00
R9 =0x0000000000000003 is an unknown value
R10=0x0000000000000200 is an unknown value
R11=0x00007fa69c5d1928 points into unknown readable memory: 40 a7 8a f1 a6 7f 00 00
R12=0x00007fa69c5d1460 points into unknown readable memory: 08 d6 8c f1 a6 7f 00 00
R13=0x00007fa69c02bbc0 points into unknown readable memory: 20 8d 8c f1 a6 7f 00 00
R14=0x00007fa6c080e090 is pointing into the stack for thread: 0x00007fa6e853c800
R15=0x00007fa6c080ccb8 is pointing into the stack for thread: 0x00007fa6e853c800


Registers:
RAX=0x00007fa6f2603000, RBX=0x00007fa69c1879b0, RCX=0x00007fa6f1510c70, RDX=0x00007fa6f1510d18
RSP=0x00007fa6c080cb00, RBP=0x00007fa6c080cb80, RSI=0x00000000000006f9, RDI=0x00007fa6f1510a50
R8 =0x00007fa69c1879b0, R9 =0x0000000000000003, R10=0x0000000000000200, R11=0x00007fa69c5d1928
R12=0x00007fa69c5d1460, R13=0x00007fa69c02bbc0, R14=0x00007fa6c080e090, R15=0x00007fa6c080ccb8
RIP=0x00007fa6f0e40778, EFLAGS=0x0000000000010206, CSGSFS=0x002b000000000033, ERR=0x0000000000000006
  TRAPNO=0x000000000000000e

Top of Stack: (sp=0x00007fa6c080cb00)
0x00007fa6c080cb00:   00007fa6c080cb30 00000009f068ef13
0x00007fa6c080cb10:   0000000000000008 00007fa69c187a20
0x00007fa6c080cb20:   0000000000000002 00007fa600000003
0x00007fa6c080cb30:   00007fa6c080ccb8 0000000000000094 

Instructions: (pc=0x00007fa6f0e40778)
0x00007fa6f0e40678:   c7 08 e8 c1 bf ff ff 31 f6 48 89 df 48 89 c2 e8
0x00007fa6f0e40688:   d4 a3 2c ff e9 10 fe ff ff 0f 1f 80 00 00 00 00
0x00007fa6f0e40698:   45 89 c1 41 8d 40 01 48 89 df 89 55 8c 49 c1 e1
0x00007fa6f0e406a8:   03 89 45 a0 4c 89 c9 49 03 4c 24 60 4c 89 4d 90
0x00007fa6f0e406b8:   48 89 4d 98 e8 4f 4a 33 ff 48 8b 4d 98 8b 55 8c
0x00007fa6f0e406c8:   4d 89 e0 48 89 de 4c 89 f7 48 89 01 48 8b 4d b0
0x00007fa6f0e406d8:   e8 23 f8 ff ff 44 8b 45 a0 4c 8b 4d 90 e9 ab fe
0x00007fa6f0e406e8:   ff ff 66 0f 1f 44 00 00 48 8d 05 e1 be a9 00 45
0x00007fa6f0e406f8:   31 c0 48 8d 0d c8 8b 73 00 48 8d 15 d4 8b 73 00
0x00007fa6f0e40708:   be 74 01 00 00 48 8d 3d 5c 7b 5e 00 48 8b 00 c6
0x00007fa6f0e40718:   00 58 45 8b 4c 24 1c 31 c0 e8 ca e9 7b ff e8 a5
0x00007fa6f0e40728:   3b 15 00 e9 58 fd ff ff 49 8d 74 24 1c 49 8d 7c
0x00007fa6f0e40738:   24 08 e8 51 c0 ff ff 4c 8b 7d b0 49 89 c4 49 8b
0x00007fa6f0e40748:   07 4c 39 e0 74 3c 48 83 f8 01 74 36 48 8d 05 7d
0x00007fa6f0e40758:   be a9 00 48 8d 0d 0e 05 6d 00 48 8d 15 af 05 6d
0x00007fa6f0e40768:   00 be f9 06 00 00 48 8d 3d db 02 6d 00 48 8b 00
0x00007fa6f0e40778:   c6 00 58 31 c0 e8 6e e9 7b ff e8 49 3b 15 00 49
0x00007fa6f0e40788:   8b 07 48 83 f8 01 74 10 48 8b 45 b0 4c 89 20 4d
0x00007fa6f0e40798:   8b 65 20 e9 db fc ff ff 49 8b 45 20 49 89 86 a0
0x00007fa6f0e407a8:   0b 00 00 eb e3 90 66 90 55 48 89 e5 41 57 49 89
0x00007fa6f0e407b8:   f7 41 56 41 89 d6 41 55 41 54 49 89 fc 53 48 83
0x00007fa6f0e407c8:   ec 28 48 89 4d c8 83 fa 7e 7e 2d 49 8b 77 20 44
0x00007fa6f0e407d8:   89 f2 4c 89 e7 e8 1e f4 ff ff 49 89 c5 48 85 c0
0x00007fa6f0e407e8:   74 4e 48 83 c4 28 4c 89 e8 5b 41 5c 41 5d 41 5e
0x00007fa6f0e407f8:   41 5f 5d c3 0f 1f 40 00 48 8d 05 d1 bd a9 00 48
0x00007fa6f0e40808:   8d 0d 38 a7 77 00 48 8d 15 4a a7 77 00 be 5b 06
0x00007fa6f0e40818:   00 00 48 8d 3d 2f 02 6d 00 48 8b 00 c6 00 58 31
0x00007fa6f0e40828:   c0 e8 c2 e8 7b ff e8 9d 3a 15 00 eb 9e 0f 1f 00
0x00007fa6f0e40838:   44 89 f6 4c 89 ff e8 ad 8b 33 ff 48 89 c3 48 85
0x00007fa6f0e40848:   c0 0f 84 f1 05 00 00 49 8b 94 24 a0 0a 00 00 49
0x00007fa6f0e40858:   63 c6 4c 8b 6b 60 4c 89 ff 8b 34 82 e8 a7 48 33
0x00007fa6f0e40868:   ff 49 89 45 00 48 8b 43 60 48 83 38 00 0f 84 85 


Stack slot to memory mapping:
stack at sp + 0 slots: 0x00007fa6c080cb30 is pointing into the stack for thread: 0x00007fa6e853c800
stack at sp + 1 slots: 0x00000009f068ef13 is an unknown value
stack at sp + 2 slots: 0x0000000000000008 is an unknown value
stack at sp + 3 slots: 0x00007fa69c187a20 points into unknown readable memory: 70 7a 18 9c a6 7f 00 00
stack at sp + 4 slots: 0x0000000000000002 is an unknown value
stack at sp + 5 slots: 0x00007fa600000003 is an unknown value
stack at sp + 6 slots: 0x00007fa6c080ccb8 is pointing into the stack for thread: 0x00007fa6e853c800
stack at sp + 7 slots: 0x0000000000000094 is an unknown value