Add allocation sites to scratchpad only if a significant amount of mementos was found.

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 1548 matching lines @@
   set_pretenure_data(
       Smi::FromInt(MementoFoundCountBits::update(value, count)),
       SKIP_WRITE_BARRIER);
 }
 
 inline bool AllocationSite::IncrementMementoFoundCount() {
   if (IsZombie()) return false;
 
   int value = memento_found_count();
   set_memento_found_count(value + 1);
-  return value == 0;
+  return value == kPretenureMinimumCreated;
 }
 
 
 inline void AllocationSite::IncrementMementoCreateCount() {
   ASSERT(FLAG_allocation_site_pretenuring);
   int value = memento_create_count();
   set_memento_create_count(value + 1);
 }
 
 
@@ skipping 5278 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_