Split NumberDictionary into a randomly seeded and an unseeded

src/elements.cc

Index: src/elements.cc
===================================================================
--- src/elements.cc	(revision 10400)
+++ src/elements.cc	(working copy)
@@ -549,11 +549,11 @@
 
 class DictionaryElementsAccessor
     : public ElementsAccessorBase<DictionaryElementsAccessor,
-                                  NumberDictionary> {
+                                  SeededNumberDictionary> {
  public:
   // Adjusts the length of the dictionary backing store and returns the new
   // length according to ES5 section 15.4.5.2 behavior.
-  static MaybeObject* SetLengthWithoutNormalize(NumberDictionary* dict,
+  static MaybeObject* SetLengthWithoutNormalize(SeededNumberDictionary* dict,
                                                 JSArray* array,
                                                 Object* length_object,
                                                 uint32_t length) {
@@ -619,9 +619,10 @@
     if (is_arguments) {
       backing_store = FixedArray::cast(backing_store->get(1));
     }
-    NumberDictionary* dictionary = NumberDictionary::cast(backing_store);
+    SeededNumberDictionary* dictionary =
+        SeededNumberDictionary::cast(backing_store);
     int entry = dictionary->FindEntry(key);
-    if (entry != NumberDictionary::kNotFound) {
+    if (entry != SeededNumberDictionary::kNotFound) {
       Object* result = dictionary->DeleteProperty(entry, mode);
       if (result == heap->true_value()) {
         MaybeObject* maybe_elements = dictionary->Shrink(key);
@@ -654,7 +655,7 @@
 
  protected:
   friend class ElementsAccessorBase<DictionaryElementsAccessor,
-                                    NumberDictionary>;
+                                    SeededNumberDictionary>;
 
   virtual MaybeObject* Delete(JSObject* obj,
                               uint32_t key,
@@ -662,12 +663,12 @@
     return DeleteCommon(obj, key, mode);
   }
 
-  static MaybeObject* Get(NumberDictionary* backing_store,
+  static MaybeObject* Get(SeededNumberDictionary* backing_store,
                           uint32_t key,
                           JSObject* obj,
                           Object* receiver) {
     int entry = backing_store->FindEntry(key);
-    if (entry != NumberDictionary::kNotFound) {
+    if (entry != SeededNumberDictionary::kNotFound) {
       Object* element = backing_store->ValueAt(entry);
       PropertyDetails details = backing_store->DetailsAt(entry);
       if (details.type() == CALLBACKS) {
@@ -682,7 +683,7 @@
     return obj->GetHeap()->the_hole_value();
   }
 
-  static uint32_t GetKeyForIndex(NumberDictionary* dict,
+  static uint32_t GetKeyForIndex(SeededNumberDictionary* dict,
                                  uint32_t index) {
     Object* key = dict->KeyAt(index);
     return Smi::cast(key)->value();
@@ -895,7 +896,7 @@
   if (length->IsNumber()) {
     uint32_t value;
     if (length->ToArrayIndex(&value)) {
-      NumberDictionary* dictionary;
+      SeededNumberDictionary* dictionary;
       MaybeObject* maybe_object = array->NormalizeElements();
       if (!maybe_object->To(&dictionary)) return maybe_object;
       Object* new_length;