Age code to allow reclaiming old unexecuted functions

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 86374371e9b81de642cb528ad2b9a89e76c2c7f1..24652c4e88a8b6d7e08009f089dc121aba41bd6d 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -609,6 +609,7 @@ Handle<SharedFunctionInfo> Compiler::Compile(Handle<String> source,
     if (result->ic_age() != HEAP->global_ic_age()) {
       result->ResetForNewContext(HEAP->global_ic_age());
     }
+    result->code()->MakeYoung();
   }
 
   if (result.is_null()) isolate->ReportPendingMessages();
@@ -670,6 +671,7 @@ Handle<SharedFunctionInfo> Compiler::CompileEval(Handle<String> source,
     if (result->ic_age() != HEAP->global_ic_age()) {
       result->ResetForNewContext(HEAP->global_ic_age());
     }
+    result->code()->MakeYoung();
   }
 
   return result;
@@ -708,7 +710,6 @@ static bool InstallFullCode(CompilationInfo* info) {
 
   // Check the function has compiled code.
   ASSERT(shared->is_compiled());
-  shared->set_code_age(0);
   shared->set_dont_optimize(lit->flags()->Contains(kDontOptimize));
   shared->set_dont_inline(lit->flags()->Contains(kDontInline));
   shared->set_ast_node_count(lit->ast_node_count());