Initialize sub-array literals first before pointing to it.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 2ac3d520dbfbbba913f20e1e3e729223caf54de0..f226730a2b7ecff126703c6d9b0a214a7c2bb946 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -11338,13 +11338,16 @@ HInstruction* HOptimizedGraphBuilder::BuildFastLiteral(
     object_elements =
         Add<HAllocate>(object_elements_size, HType::HeapObject(),
                        pretenure_flag, instance_type, current_site);
-  }
-  BuildInitElementsInObjectHeader(boilerplate_object, object, object_elements);
-
-  // Copy object elements if non-COW.
-  if (object_elements != NULL) {
     BuildEmitElements(boilerplate_object, elements, object_elements,
                       site_context);
+    Add<HStoreNamedField>(object, HObjectAccess::ForElementsPointer(),
+                          object_elements);
+  } else {
+    Handle<Object> elements_field =
+        Handle<Object>(boilerplate_object->elements(), isolate());
+    HInstruction* object_elements_cow = Add<HConstant>(elements_field);
+    Add<HStoreNamedField>(object, HObjectAccess::ForElementsPointer(),
+                          object_elements_cow);
   }
 
   // Copy in-object properties.
@@ -11386,21 +11389,6 @@ void HOptimizedGraphBuilder::BuildEmitObjectHeader(
 }
 
 
-void HOptimizedGraphBuilder::BuildInitElementsInObjectHeader(
-    Handle<JSObject> boilerplate_object,
-    HInstruction* object,
-    HInstruction* object_elements) {
-  DCHECK(boilerplate_object->properties()->length() == 0);
-  if (object_elements == NULL) {
-    Handle<Object> elements_field =
-        Handle<Object>(boilerplate_object->elements(), isolate());
-    object_elements = Add<HConstant>(elements_field);
-  }
-  Add<HStoreNamedField>(object, HObjectAccess::ForElementsPointer(),
-      object_elements);
-}
-
-
 void HOptimizedGraphBuilder::BuildEmitInObjectProperties(
     Handle<JSObject> boilerplate_object,
     HInstruction* object,