Fix the Array.push simulate for non-effect context.

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 7812 matching lines @@
           HObjectAccess::ForArrayLength(elements_kind));
 
         new_size = AddUncasted<HAdd>(length, graph()->GetConstant1());
 
         bool is_array = receiver_map->instance_type() == JS_ARRAY_TYPE;
         BuildUncheckedMonomorphicElementAccess(array, length,
                                                value_to_push, is_array,
                                                elements_kind, STORE,
                                                NEVER_RETURN_HOLE,
                                                STORE_AND_GROW_NO_TRANSITION);
+
+        if (!ast_context()->IsEffect()) Push(new_size);
         Add<HSimulate>(expr->id(), REMOVABLE_SIMULATE);
+        if (!ast_context()->IsEffect()) Drop(1);
       }
 
       ast_context()->ReturnValue(new_size);
       return true;
     }
     default:
       // Not yet supported for inlining.
       break;
   }
   return false;
@@ skipping 3828 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal