Reset code age when serializing code objects.

src/objects.cc

 // Copyright 2013 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.
 
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
@@ skipping 10445 matching lines @@
     // Treat that's never been executed as old immediately.
     age = Code::kIsOldCodeAge;
   } else if (age == Code::kExecutedOnceCodeAge) {
     // Pre-age code that has only been executed once.
     age = Code::kPreAgedCodeAge;
   }
   return age;
 }
 
 
+void Code::MakeYoung() {
+  byte* sequence = FindCodeAgeSequence();
+  if (sequence != NULL) MakeCodeAgeSequenceYoung(sequence, GetIsolate());
+}
+
+
 void Code::MakeOlder(MarkingParity current_parity) {
   byte* sequence = FindCodeAgeSequence();
   if (sequence != NULL) {
     Age age;
     MarkingParity code_parity;
     Isolate* isolate = GetIsolate();
     GetCodeAgeAndParity(isolate, sequence, &age, &code_parity);
     age = EffectiveAge(age);
     if (age != kLastCodeAge && code_parity != current_parity) {
       PatchPlatformCodeAge(isolate,
@@ skipping 5906 matching lines @@
   Handle<DependentCode> codes =
       DependentCode::Insert(handle(cell->dependent_code(), info->isolate()),
                             DependentCode::kPropertyCellChangedGroup,
                             info->object_wrapper());
   if (*codes != cell->dependent_code()) cell->set_dependent_code(*codes);
   info->dependencies(DependentCode::kPropertyCellChangedGroup)->Add(
       cell, info->zone());
 }
 
 } }  // namespace v8::internal