[ic] Use UnseededNumberDictionary as a storage for names in TypeFeedbackMetadata.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 832 matching lines @@
 }
 
 
 bool Object::IsGlobalDictionary() const { return IsDictionary(); }
 
 
 bool Object::IsSeededNumberDictionary() const {
   return IsDictionary();
 }
 
-
-bool Object::IsUnseededNumberDictionary() const {
-  return IsDictionary();
+bool HeapObject::IsUnseededNumberDictionary() const {
+  return map() == GetHeap()->unseeded_number_dictionary_map();
 }
 
 bool HeapObject::IsStringTable() const { return IsHashTable(); }
 
 bool HeapObject::IsStringSet() const { return IsHashTable(); }
 
 bool HeapObject::IsObjectHashSet() const { return IsHashTable(); }
 
 bool HeapObject::IsNormalizedMapCache() const {
   return NormalizedMapCache::IsNormalizedMapCache(this);
@@ skipping 2190 matching lines @@
 
 void HashTableBase::SetNumberOfElements(int nof) {
   set(kNumberOfElementsIndex, Smi::FromInt(nof));
 }
 
 
 void HashTableBase::SetNumberOfDeletedElements(int nod) {
   set(kNumberOfDeletedElementsIndex, Smi::FromInt(nod));
 }
 
+template <typename Key>
+Map* BaseShape<Key>::GetMap(Isolate* isolate) {
+  return isolate->heap()->hash_table_map();
+}
 
 template <typename Derived, typename Shape, typename Key>
 int HashTable<Derived, Shape, Key>::FindEntry(Key key) {
   return FindEntry(GetIsolate(), key);
 }
 
 
 template<typename Derived, typename Shape, typename Key>
 int HashTable<Derived, Shape, Key>::FindEntry(Isolate* isolate, Key key) {
   return FindEntry(isolate, key, HashTable::Hash(key));
@@ skipping 4390 matching lines @@
   Shape::SetEntry(static_cast<Derived*>(this), entry, key, value, details);
 }
 
 
 template <typename Key>
 template <typename Dictionary>
 void BaseDictionaryShape<Key>::SetEntry(Dictionary* dict, int entry,
                                         Handle<Object> key,
                                         Handle<Object> value,
                                         PropertyDetails details) {
-  STATIC_ASSERT(Dictionary::kEntrySize == 3);
+  STATIC_ASSERT(Dictionary::kEntrySize == 2 || Dictionary::kEntrySize == 3);
   DCHECK(!key->IsName() || details.dictionary_index() > 0);
   int index = dict->EntryToIndex(entry);
   DisallowHeapAllocation no_gc;
   WriteBarrierMode mode = dict->GetWriteBarrierMode(no_gc);
   dict->set(index + Dictionary::kEntryKeyIndex, *key, mode);
   dict->set(index + Dictionary::kEntryValueIndex, *value, mode);
-  dict->set(index + Dictionary::kEntryDetailsIndex, details.AsSmi());
+  if (Dictionary::kEntrySize == 3) {
+    dict->set(index + Dictionary::kEntryDetailsIndex, details.AsSmi());
+  }
 }
 
 
 template <typename Dictionary>
 void GlobalDictionaryShape::SetEntry(Dictionary* dict, int entry,
                                      Handle<Object> key, Handle<Object> value,
                                      PropertyDetails details) {
   STATIC_ASSERT(Dictionary::kEntrySize == 2);
   DCHECK(!key->IsName() || details.dictionary_index() > 0);
   DCHECK(value->IsPropertyCell());
@@ skipping 16 matching lines @@
   return ComputeIntegerHash(key, 0);
 }
 
 
 uint32_t UnseededNumberDictionaryShape::HashForObject(uint32_t key,
                                                       Object* other) {
   DCHECK(other->IsNumber());
   return ComputeIntegerHash(static_cast<uint32_t>(other->Number()), 0);
 }
 
+Map* UnseededNumberDictionaryShape::GetMap(Isolate* isolate) {
+  return *isolate->factory()->unseeded_number_dictionary_map();
+}
 
 uint32_t SeededNumberDictionaryShape::SeededHash(uint32_t key, uint32_t seed) {
   return ComputeIntegerHash(key, seed);
 }
 
 
 uint32_t SeededNumberDictionaryShape::SeededHashForObject(uint32_t key,
                                                           uint32_t seed,
                                                           Object* other) {
   DCHECK(other->IsNumber());
@@ skipping 485 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_