Manually disabling loop opts before EA triggers an assert with TestMissingAntiDependency.java and -XX:+StressIGVN:

diff --git a/src/hotspot/share/opto/compile.cpp b/src/hotspot/share/opto/compile.cpp
index 42c23b40322..71584350414 100644
--- a/src/hotspot/share/opto/compile.cpp
+++ b/src/hotspot/share/opto/compile.cpp
@@ -2200,7 +2200,7 @@ void Compile::Optimize() {
 
   // Perform escape analysis
   if (do_escape_analysis() && ConnectionGraph::has_candidates(this)) {
- if (has_loops()) {
+ if (has_loops() && false) {
       // Cleanup graph (remove dead nodes).
       TracePhase tp("idealLoop", &timers[_t_idealLoop]);
       PhaseIdealLoop::optimize(igvn, LoopOptsMaxUnroll);

# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/oracle/jdk2/open/src/hotspot/share/opto/gcm.cpp:793), pid=351030, tid=351042
# assert(store != load->find_exact_control(load->in(0))) failed: dependence cycle found

Current CompileTask:
C2: 945 532 b 4 TestMissingAntiDependency::test (89 bytes)

Stack: [0x00007f1e95856000,0x00007f1e95957000], sp=0x00007f1e95951680, free space=1005k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xea5840] PhaseCFG::insert_anti_dependences(Block*, Node*, bool)+0x2200
V [libjvm.so+0xeabf54] PhaseCFG::schedule_late(VectorSet&, Node_Stack&)+0xca4
V [libjvm.so+0xeac808] PhaseCFG::global_code_motion()+0x398
V [libjvm.so+0xeb0931] PhaseCFG::do_global_code_motion()+0x51
V [libjvm.so+0xb02515] Compile::Code_Gen()+0x295
V [libjvm.so+0xb07e69] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x15f9
V [libjvm.so+0x91ea3a] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x62a
V [libjvm.so+0xb168f8] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xbb8
V [libjvm.so+0xb178e8] CompileBroker::compiler_thread_loop()+0x6f8
V [libjvm.so+0x1aa608c] JavaThread::thread_main_inner()+0x23c
V [libjvm.so+0x1ab15d0] Thread::call_run()+0x100
V [libjvm.so+0x1762314] thread_native_entry(Thread*)+0x104


Might be related to JDK-8284358.