[stubs] KeyedLoadIC_Megamorphic: use stub cache lookup as fallback

src/ic/ic.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ic/ic.h"
 
 #include "src/accessors.h"
 #include "src/api-arguments-inl.h"
 #include "src/api.h"
 #include "src/arguments.h"
@@ skipping 1418 matching lines @@
     if ((object->IsJSObject() && key->IsSmi()) ||
         (object->IsString() && key->IsNumber())) {
       UpdateLoadElement(Handle<HeapObject>::cast(object));
       TRACE_IC("LoadIC", key);
     }
   }
 
   if (!is_vector_set()) {
     ConfigureVectorState(MEGAMORPHIC, key);
     TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "set generic");
+    TRACE_IC("LoadIC", key);
   }
 
   if (!load_handle.is_null()) return load_handle;
 
   Handle<Object> result;
   ASSIGN_RETURN_ON_EXCEPTION(isolate(), result,
                              Runtime::GetObjectProperty(isolate(), object, key),
                              Object);
   return result;
 }
@@ skipping 1471 matching lines @@
     DCHECK_EQ(LookupIterator::INTERCEPTOR, it.state());
     it.Next();
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
                                        Object::GetProperty(&it));
   }
 
   return *result;
 }
 }  // namespace internal
 }  // namespace v8