Crash with an assert. Appears to be similiar to 6773776 and one of asserts in 7032696, however it reproduces only starting JDK 7 b112 (HS 20 b01), while 6773776 is for HS14.
Note: from HS 21 b09 up to HS 22 b02, same client fails with assertion from 7068051.

# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/tmp/jprt/P2/211217.kvn/source/src/share/vm/opto/node.cpp:70), pid=1962, tid=140431895771472
# assert(Compile::current()->unique() < (uint)MaxNodeLimit) failed: Node limit exceeded
#
# JRE version: 7.0-b147
# Java VM: Java HotSpot(TM) 64-Bit Server VM (22.0-b02-internal-201108202112.kvn.7076831-fastdebug mixed mode linux-amd64 compressed oops)

Current thread (0x00000000007d2000): JavaThread "C2 CompilerThread1" daemon [_thread_in_native, id=1977, stack(0x00007fb8d9333000,0x00007fb8d9434000)]

Stack: [0x00007fb8d9333000,0x00007fb8d9434000], sp=0x00007fb8d942df00, free space=1003k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xbff462] VMError::report_and_die()+0x2f2
V [libjvm.so+0x5b6144] report_vm_error(char const*, int, char const*, char const*)+0x84
V [libjvm.so+0x9ca10f] Node::verify_construction()+0x18f
V [libjvm.so+0x9cd38b] Node::Node(unsigned int)+0x4b
V [libjvm.so+0x46b8d0] PhiNode::make_blank(Node*, Node*)+0xd0
V [libjvm.so+0x46d1f9] PhiNode::Ideal(PhaseGVN*, bool)+0x1439
V [libjvm.so+0xa65405] PhaseIterGVN::transform_old(Node*)+0xa5
V [libjvm.so+0xa64829] PhaseIterGVN::optimize()+0x269
V [libjvm.so+0x53843f] Compile::Optimize()+0x12f
V [libjvm.so+0x53cffc] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool)+0x10bc
V [libjvm.so+0x44c050] C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0x1d0
V [libjvm.so+0x5464f5] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x4b5
V [libjvm.so+0x5470d4] CompileBroker::compiler_thread_loop()+0x4f4
V [libjvm.so+0xba4d66] JavaThread::thread_main_inner()+0xf6
V [libjvm.so+0xa07ca0] java_start(Thread*)+0x100


Current CompileTask:
C2: 35435 93 ! atg.core.net.URLHammerThread::run (2785 bytes)