Remove extraneous forced rejuvenations in code aging

src/objects.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 7954 matching lines @@
   FixedArray* code_map = FixedArray::cast(optimized_code_map());
   if (!bound()) {
     FixedArray* cached_literals = FixedArray::cast(code_map->get(index + 1));
     ASSERT(cached_literals != NULL);
     function->set_literals(cached_literals);
   }
   Code* code = Code::cast(code_map->get(index));
   ASSERT(code != NULL);
   ASSERT(function->context()->native_context() == code_map->get(index - 1));
   function->ReplaceCode(code);
-  code->MakeYoung();
 }
 
 
 bool JSFunction::CompileLazy(Handle<JSFunction> function,
                              ClearExceptionFlag flag) {
   bool result = true;
   if (function->shared()->is_compiled()) {
     function->ReplaceCode(function->shared()->code());
     function->shared()->set_code_age(0);
   } else {
@@ skipping 848 matching lines @@
       (is_compare_ic_stub() &&
        ICCompareStub::CompareState(stub_info()) == CompareIC::KNOWN_OBJECTS);
 }
 
 
 void Code::MakeCodeAgeSequenceYoung(byte* sequence) {
   PatchPlatformCodeAge(sequence, kNoAge, NO_MARKING_PARITY);
 }
 
 
-void Code::MakeYoung() {
-  byte* sequence = FindCodeAgeSequence();
-  if (sequence != NULL) {
-    PatchPlatformCodeAge(sequence, kNoAge, NO_MARKING_PARITY);
-  }
-}
-
-
 void Code::MakeOlder(MarkingParity current_parity) {
   byte* sequence = FindCodeAgeSequence();
   if (sequence != NULL) {
     Age age;
     MarkingParity code_parity;
     GetCodeAgeAndParity(sequence, &age, &code_parity);
     if (age != kLastCodeAge && code_parity != current_parity) {
       PatchPlatformCodeAge(sequence, static_cast<Age>(age + 1),
                            current_parity);
     }
@@ skipping 5019 matching lines @@
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
 } }  // namespace v8::internal