VM crashes with
;; Using jvm: "/export/local/common/jdk/baseline/linux-i586/jre/lib/i386/server/libjvm.so"
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/tmp/jprt/P1/B/122931.et151817/source/src/share/vm/opto/node.hpp:749), pid=1881, tid=2401237872
# assert(is_Mem()) failed: invalid node class
#
# JRE version: 7.0-b142
# Java VM: Java HotSpot(TM) Server VM (21.0-b14-internal-201105201229.et151817.hs21-b14-snapshot-fastdebug mixed mode linux-x86 )
# Core dump written. Default location: /export/local/50717.HSX.PIT.VM+linux-i586_javase__client_mixed_JT_HS/results/workDir/closed/runtime/4827353/ReadAfterWrite/core or core.1881
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
#

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

Current thread (0x8f259800): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=1889, stack(0x8f17f000,0x8f200000)]

Stack: [0x8f17f000,0x8f200000], sp=0x8f1fd0b0, free space=504k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xab1af1] VMError::report_and_die()+0x1a1;; VMError::report_and_die()+0x1a1
V [libjvm.so+0x4cd1a8] report_vm_error(char const*, int, char const*, char const*)+0x68;; report_vm_error(char const*, int, char const*, char const*)+0x68
V [libjvm.so+0x7e99fe] Node::as_Mem() const+0x3e;; Node::as_Mem() const+0x3e
V [libjvm.so+0xa0843e] SuperWord::co_locate_pack(Node_List*)+0xce;; SuperWord::co_locate_pack(Node_List*)+0xce
V [libjvm.so+0xa0db0b] SuperWord::SLP_extract()+0x16b;; SuperWord::SLP_extract()+0x16b
V [libjvm.so+0x7fc9b1] PhaseIdealLoop::build_and_optimize(bool)+0x10a1;; PhaseIdealLoop::build_and_optimize(bool)+0x10a1
V [libjvm.so+0x45cc4a] Compile::Optimize()+0xd5a;; Compile::Optimize()+0xd5a
V [libjvm.so+0x460444] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool)+0x1114;; Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool)+0x1114
V [libjvm.so+0x374f39] C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0x229;; C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0x229
V [libjvm.so+0x46a3a8] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x548;; CompileBroker::invoke_compiler_on_method(CompileTask*)+0x548
V [libjvm.so+0x46b09b] CompileBroker::compiler_thread_loop()+0x5bb;; CompileBroker::compiler_thread_loop()+0x5bb
V [libjvm.so+0xa4bc6f] compiler_thread_entry(JavaThread*, Thread*)+0x4f;; compiler_thread_entry(JavaThread*, Thread*)+0x4f
V [libjvm.so+0xa5a254] JavaThread::thread_main_inner()+0xf4;; JavaThread::thread_main_inner()+0xf4
V [libjvm.so+0x8e2d61] java_start(Thread*)+0x111;; java_start(Thread*)+0x111
C [libpthread.so.0+0x596e] start_thread+0xbe


Current CompileTask:
C2: 551 4 % ReadAfterWrite::main @ 5 (79 bytes)