Regression after 7125896 changes.

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/tmp/jprt/P1/213046.vkozlov/source/src/share/vm/opto/parse1.cpp:1814), pid=11643, tid=17
# assert(!nocreate) failed: Cannot build a phi for a block already parsed.
#
# JRE version: 7.0_04-b06
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.0-b10-internal-201201072130.vkozlov.7125896-fastdebug compiled mode solaris-amd64 )
# Core dump written. Default location: /export/local/57377.JDK7.NIGHTLY.VM_solaris-amd64_javase_server_comp_JT_HS/results/workDir/closed/compiler/6434117/TestNativeRevocation/core or core.11643
#
# 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 (0x0000000000fc7000): JavaThread "C2 CompilerThread2" daemon [_thread_in_native, id=17, stack(0xfffffd7ffddac000,0xfffffd7ffdeac000)]

Stack: [0xfffffd7ffddac000,0xfffffd7ffdeac000], sp=0xfffffd7ffdea7cf0, free space=1007k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x2779f04] void VMError::report(outputStream*)+0x8c8;; void VMError::report(outputStream*)+0x8c8
V [libjvm.so+0x277b049] void VMError::report_and_die()+0x4fd;; void VMError::report_and_die()+0x4fd
V [libjvm.so+0xee5033] void report_vm_error(const char*,int,const char*,const char*)+0x55f;; void report_vm_error(const char*,int,const char*,const char*)+0x55f
V [libjvm.so+0x2274377] PhiNode*Parse::ensure_phi(int,bool)+0x947;; PhiNode*Parse::ensure_phi(int,bool)+0x947
V [libjvm.so+0x226a57e] void Parse::merge_common(Parse::Block*,int)+0xcda;; void Parse::merge_common(Parse::Block*,int)+0xcda
V [libjvm.so+0x2268f36] void Parse::merge(int)+0xb6;; void Parse::merge(int)+0xb6
V [libjvm.so+0x2291e87] void Parse::do_if(BoolTest::mask,Node*)+0xe3f;; void Parse::do_if(BoolTest::mask,Node*)+0xe3f
V [libjvm.so+0x229450e] void Parse::do_one_bytecode()+0x4e2;; void Parse::do_one_bytecode()+0x4e2
V [libjvm.so+0x226870e] void Parse::do_one_block()+0x576;; void Parse::do_one_block()+0x576
V [libjvm.so+0x22597e0] void Parse::do_all_blocks()+0x2278;; void Parse::do_all_blocks()+0x2278
V [libjvm.so+0x2256f53] Parse::Parse #Nvariant 1(JVMState*,ciMethod*,float)+0xa33;; Parse::Parse(JVMState*,ciMethod*,float)+0xa33
V [libjvm.so+0xabcc8a] JVMState*ParseGenerator::generate(JVMState*)+0x102;; JVMState*ParseGenerator::generate(JVMState*)+0x102
V [libjvm.so+0xd37632] Compile::Compile(ciEnv*,C2Compiler*,ciMethod*,int,bool,bool)+0x1166;; Compile::Compile(ciEnv*,C2Compiler*,ciMethod*,int,bool,bool)+0x1166
V [libjvm.so+0xabb897] void C2Compiler::compile_method(ciEnv*,ciMethod*,int)+0x16b;; void C2Compiler::compile_method(ciEnv*,ciMethod*,int)+0x16b
V [libjvm.so+0xd5fe33] void CompileBroker::invoke_compiler_on_method(CompileTask*)+0x14cb;; void CompileBroker::invoke_compiler_on_method(CompileTask*)+0x14cb
V [libjvm.so+0xd5dd0b] void CompileBroker::compiler_thread_loop()+0xc8f;; void CompileBroker::compiler_thread_loop()+0xc8f
V [libjvm.so+0x2637844] void JavaThread::thread_main_inner()+0x4d4;; void JavaThread::thread_main_inner()+0x4d4
V [libjvm.so+0x2637156] void JavaThread::run()+0x61e;; void JavaThread::run()+0x61e
V [libjvm.so+0x21d5a9a] java_start+0x6a6;; java_start+0x6a6
C [libc.so.1+0x121021] _thrp_setup+0xa5;; _thrp_setup+0xa5
C [libc.so.1+0x1212c0] _lwp_start+0x0;; _lwp_start+0x0


Current CompileTask:
C2: 7832 2 % !b 4 TestNativeRevocation$RevokerThread::run @ 74 (128 bytes)