Give ComputeCapacityForSerialization a minimum capacity

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 3242 matching lines @@
 
 
 DescriptorArray::WhitenessWitness::~WhitenessWitness() {
   marking_->LeaveNoMarkingScope();
 }
 
 
 int HashTableBase::ComputeCapacity(int at_least_space_for) {
   const int kMinCapacity = 4;
   int capacity = base::bits::RoundUpToPowerOfTwo32(at_least_space_for * 2);
-  if (capacity < kMinCapacity) {
-    capacity = kMinCapacity;  // Guarantee min capacity.
-  }
-  return capacity;
+  return Max(capacity, kMinCapacity);
 }
 
 
 int HashTableBase::ComputeCapacityForSerialization(int at_least_space_for) {
-  return base::bits::RoundUpToPowerOfTwo32(at_least_space_for);
+  const int kMinCapacity = 1;
+  int capacity = base::bits::RoundUpToPowerOfTwo32(at_least_space_for);
+  return Max(capacity, kMinCapacity);
 }
 
 
 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.
@@ skipping 4317 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_