Addressed perf regression in Browsermark2.0 array blur test

src/hydrogen.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5102 matching lines @@
     AllocationSiteUsageContext usage_context(isolate(), site, false);
     usage_context.EnterNewScope();
     literal = BuildFastLiteral(boilerplate_object, &usage_context);
     usage_context.ExitScope(site, boilerplate_object);
   } else {
     NoObservableSideEffectsScope no_effects(this);
     // Boilerplate already exists and constant elements are never accessed,
     // pass an empty fixed array to the runtime function instead.
     Handle<FixedArray> constants = isolate()->factory()->empty_fixed_array();
     int literal_index = expr->literal_index();
+    int flags = expr->depth() == 1
+        ? ArrayLiteral::kShallowElements
+        : ArrayLiteral::kNoFlags;
+    flags |= ArrayLiteral::kDisableMementos;
 
     Add<HPushArgument>(Add<HConstant>(literals));
     Add<HPushArgument>(Add<HConstant>(literal_index));
     Add<HPushArgument>(Add<HConstant>(constants));
+    Add<HPushArgument>(Add<HConstant>(flags));
 
     // TODO(mvstanton): Consider a flag to turn off creation of any
     // AllocationMementos for this call: we are in crankshaft and should have
     // learned enough about transition behavior to stop emitting mementos.
     Runtime::FunctionId function_id = Runtime::kCreateArrayLiteral;
     literal = Add<HCallRuntime>(isolate()->factory()->empty_string(),
                                 Runtime::FunctionForId(function_id),
-                                3);
+                                4);
 
     // De-opt if elements kind changed from boilerplate_elements_kind.
     Handle<Map> map = Handle<Map>(boilerplate_object->map(), isolate());
     literal = Add<HCheckMaps>(literal, map, top_info());
   }
 
   // The array is expected in the bailout environment during computation
   // of the property values and is the value of the entire expression.
   Push(literal);
   // The literal index is on the stack, too.
@@ skipping 5525 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal