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..940d37e1c99e032d1ad51540b9f28c2f63f7101f 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();

[Michael Starzinger, 2012/09/21 09:43:19]

I think we also might want to make the code young again when it get's installed
from the optimized code cache during lazy compilation. The static
InstallCodeFromOptimizedCodeMap() helper in this file should be the right
bottleneck for that.

[danno, 2012/10/25 10:07:23]

Done.

   }
 
   if (result.is_null()) isolate->ReportPendingMessages();
@@ -708,7 +709,6 @@ 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());