Fix bingint crash, disable a test

runtime/vm/flow_graph_optimizer.cc

Index: runtime/vm/flow_graph_optimizer.cc
diff --git a/runtime/vm/flow_graph_optimizer.cc b/runtime/vm/flow_graph_optimizer.cc
index a4e591851aa10465e121424f618b1acafa85b3f3..85a91d2ea68bcf3a50288d4da4efe9aa53919a3e 100644
--- a/runtime/vm/flow_graph_optimizer.cc
+++ b/runtime/vm/flow_graph_optimizer.cc
@@ -162,6 +162,11 @@ static bool IsNumberCid(intptr_t cid) {
 
 
 bool FlowGraphOptimizer::TryCreateICData(InstanceCallInstr* call) {
+  return false;
+  // TODO(srdjan): Investigate failures in:
+  //  corelib/big_integer_arith_vm_test
+  //  dart2js/members_test
+  //  language/try_catch_optimized1_test
   ASSERT(call->HasICData());
   if (call->ic_data()->NumberOfUsedChecks() > 0) {
     // This occurs when an instance call has too many checks, will be converted