Change hash table capacity heuristics when serializing.

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 3227 matching lines @@
   DCHECK(!marking_->IsMarking() ||
          Marking::Color(array) == Marking::WHITE_OBJECT);
 }
 
 
 DescriptorArray::WhitenessWitness::~WhitenessWitness() {
   marking_->LeaveNoMarkingScope();
 }
 
 
-template<typename Derived, typename Shape, typename Key>
-int HashTable<Derived, Shape, Key>::ComputeCapacity(int at_least_space_for) {
+int HashTableBase::ComputeCapacity(int at_least_space_for) {
   const int kMinCapacity = 32;
   int capacity = base::bits::RoundUpToPowerOfTwo32(at_least_space_for * 2);
   if (capacity < kMinCapacity) {
     capacity = kMinCapacity;  // Guarantee min capacity.
   }
   return capacity;
 }
 
 
-template<typename Derived, typename Shape, typename Key>
+int HashTableBase::ComputeCapacityForSerialization(int at_least_space_for) {
+  return base::bits::RoundUpToPowerOfTwo32(at_least_space_for);
+}
+
+
+template <typename Derived, typename Shape, typename Key>
 int HashTable<Derived, Shape, Key>::FindEntry(Key key) {
   return FindEntry(GetIsolate(), key);
 }
 
 
 // Find entry for key otherwise return kNotFound.
 template<typename Derived, typename Shape, typename Key>
 int HashTable<Derived, Shape, Key>::FindEntry(Isolate* isolate, Key key) {
   uint32_t capacity = Capacity();
   uint32_t entry = FirstProbe(HashTable::Hash(key), capacity);
@@ skipping 4270 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_