A change in the way we place TransitionElementKinds in the tree.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 446443148dcf219323317ec5ab40aefd29598706..eb565e4d7a02a8febf4a373f3874dcfc249e7ac3 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -137,8 +137,9 @@ namespace internal {
       static_cast<LanguageMode>(args.smi_at(index));
 
 
-MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
-                                                   JSObject* boilerplate) {
+MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplateInternal(
+    Isolate* isolate,
+    JSObject* boilerplate) {
   StackLimitCheck check(isolate);
   if (check.HasOverflowed()) return isolate->StackOverflow();
 
@@ -156,7 +157,8 @@ MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
       Object* value = properties->get(i);
       if (value->IsJSObject()) {
         JSObject* js_object = JSObject::cast(value);
-        { MaybeObject* maybe_result = DeepCopyBoilerplate(isolate, js_object);
+        { MaybeObject* maybe_result = DeepCopyBoilerplateInternal(
+            isolate, js_object);
           if (!maybe_result->ToObject(&result)) return maybe_result;
         }
         properties->set(i, result);
@@ -167,7 +169,8 @@ MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
       Object* value = copy->InObjectPropertyAt(i);
       if (value->IsJSObject()) {
         JSObject* js_object = JSObject::cast(value);
-        { MaybeObject* maybe_result = DeepCopyBoilerplate(isolate, js_object);
+        { MaybeObject* maybe_result = DeepCopyBoilerplateInternal(
+            isolate, js_object);
           if (!maybe_result->ToObject(&result)) return maybe_result;
         }
         copy->InObjectPropertyAtPut(i, result);
@@ -193,7 +196,8 @@ MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
           copy->GetProperty(key_string, &attributes)->ToObjectUnchecked();
       if (value->IsJSObject()) {
         JSObject* js_object = JSObject::cast(value);
-        { MaybeObject* maybe_result = DeepCopyBoilerplate(isolate, js_object);
+        { MaybeObject* maybe_result = DeepCopyBoilerplateInternal(
+            isolate, js_object);
           if (!maybe_result->ToObject(&result)) return maybe_result;
         }
         { MaybeObject* maybe_result =
@@ -229,7 +233,7 @@ MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
                  (IsFastObjectElementsKind(copy->GetElementsKind())));
           if (value->IsJSObject()) {
             JSObject* js_object = JSObject::cast(value);
-            { MaybeObject* maybe_result = DeepCopyBoilerplate(isolate,
+            { MaybeObject* maybe_result = DeepCopyBoilerplateInternal(isolate,
                                                               js_object);
               if (!maybe_result->ToObject(&result)) return maybe_result;
             }
@@ -248,7 +252,7 @@ MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
           Object* value = element_dictionary->ValueAt(i);
           if (value->IsJSObject()) {
             JSObject* js_object = JSObject::cast(value);
-            { MaybeObject* maybe_result = DeepCopyBoilerplate(isolate,
+            { MaybeObject* maybe_result = DeepCopyBoilerplateInternal(isolate,
                                                               js_object);
               if (!maybe_result->ToObject(&result)) return maybe_result;
             }
@@ -279,6 +283,15 @@ MUST_USE_RESULT static MaybeObject* DeepCopyBoilerplate(Isolate* isolate,
 }
 
 
+Handle<JSObject> Runtime::DeepCopyBoilerplate(Isolate* isolate,
+                                            Handle<JSObject> boilerplate) {
+  // MaybeObject* mo = DeepCopyBoilerplateInternal(isolate, *boilerplate);
+  CALL_HEAP_FUNCTION(isolate,
+                     DeepCopyBoilerplateInternal(isolate, *boilerplate),
+                     JSObject);
+}
+
+
 static Handle<Map> ComputeObjectLiteralMap(
     Handle<Context> context,
     Handle<FixedArray> constant_properties,
@@ -596,7 +609,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateObjectLiteral) {
     // Update the functions literal and return the boilerplate.
     literals->set(literals_index, *boilerplate);
   }
-  return DeepCopyBoilerplate(isolate, JSObject::cast(*boilerplate));
+  return DeepCopyBoilerplateInternal(isolate, JSObject::cast(*boilerplate));
 }
 
 
@@ -643,7 +656,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateArrayLiteral) {
     // Update the functions literal and return the boilerplate.
     literals->set(literals_index, *boilerplate);
   }
-  return DeepCopyBoilerplate(isolate, JSObject::cast(*boilerplate));
+  return DeepCopyBoilerplateInternal(isolate, JSObject::cast(*boilerplate));
 }