tmtools/jstat/class/jstat_class03 crashed the VM on Solaris-amd64 in Promotion test of JDK8_b120, Problematic frame: [libjvm.so+0x730ef3] bool BlockBegin::try_merge(ValueStack*)+0x31f

The test failed on Solaris-amd64 in Promotion test of JDK8_b120 with this error message:

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0xfffffd7ffdf30ef3, pid=16252, tid=13
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b120) (build 1.8.0-ea-b120)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b62 mixed mode solaris-amd64 compressed oops)
# Problematic frame:
# V [libjvm.so+0x730ef3] bool BlockBegin::try_merge(ValueStack*)+0x31f
#
# Core dump written. Default location: /export/local/aurora/sandbox/results/ResultDir/jstat_class03/core or core.16252
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
#

<...>

Stack: [0xfffffd7ea1eed000,0xfffffd7ea1fed000], sp=0xfffffd7ea1feb880, free space=1018k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x730ef3] bool BlockBegin::try_merge(ValueStack*)+0x31f;; __1cKBlockBeginJtry_merge6MpnKValueStack__b_+0x31f
V [libjvm.so+0x710748] BlockEnd*GraphBuilder::iterate_bytecodes_for_block(int)+0x40a4;; __1cMGraphBuilderbBiterate_bytecodes_for_block6Mi_pnIBlockEnd__+0x40a4
V [libjvm.so+0x714944] GraphBuilder::GraphBuilder #Nvariant 1(Compilation*,IRScope*)+0x8c8;; __1cMGraphBuilder2t6MpnLCompilation_pnHIRScope__v_+0x8c8
V [libjvm.so+0x72725c] IR::IR(Compilation*,ciMethod*,int)+0x3c0;; __1cCIR2t6MpnLCompilation_pnIciMethod_i_v_+0x3c0
V [libjvm.so+0x6e80e6] void Compilation::build_hir()+0x106;; __1cLCompilationJbuild_hir6M_v_+0x106
V [libjvm.so+0x6e99e5] int Compilation::compile_java_method()+0x1e5;; __1cLCompilationTcompile_java_method6M_i_+0x1e5
V [libjvm.so+0x6eb75b] Compilation::Compilation(AbstractCompiler*,ciEnv*,ciMethod*,int,BufferBlob*)+0x3e7;; __1cLCompilation2t6MpnQAbstractCompiler_pnFciEnv_pnIciMethod_ipnKBufferBlob__v_+0x3e7
V [libjvm.so+0x6ec99e] void Compiler::compile_method(ciEnv*,ciMethod*,int)+0xfa;; __1cICompilerOcompile_method6MpnFciEnv_pnIciMethod_i_v_+0xfa
V [libjvm.so+0x92bfb9] void CompileBroker::invoke_compiler_on_method(CompileTask*)+0xdb9;; __1cNCompileBrokerZinvoke_compiler_on_method6FpnLCompileTask__v_+0xdb9
V [libjvm.so+0x92a989] void CompileBroker::compiler_thread_loop()+0x56d;; __1cNCompileBrokerUcompiler_thread_loop6F_v_+0x56d
V [libjvm.so+0x12f2d06] void JavaThread::run()+0x4da;; __1cKJavaThreadDrun6M_v_+0x4da
V [libjvm.so+0x10e2684] java_start+0x99c;; java_start+0x99c
C [libc.so.1+0xd704b] _thr_setup+0x5b;; _thr_setup+0x5b
C [libc.so.1+0xd7280] ht_pause+0x10;; _lwp_start+0x0

There are core files and a Flight recording in the results directory

Priority justification:
ILW = HMM => P2 (Maybe HMH => P1?)

Link to failure:
http://vmsqe-app.russia.sun.com/surl/6l

Link to test history:
http://vmsqe-app.russia.sun.com/surl/6m

Matching rule:
RULE tmtools/jstat/class/jstat_class03 Crash SIGSEGV