diff --git a/src/codegen.cc b/src/codegen.cc
index fd7e0e8..aa2a2b8 100644
--- a/src/codegen.cc
+++ b/src/codegen.cc
@@ -217,6 +217,10 @@
 Handle<Code> CodeGenerator::MakeCode(FunctionLiteral* fun,
                                      Handle<Script> script,
                                      bool is_eval) {
+  if (!script->IsUndefined() && !script->source()->IsUndefined()) {
+    int len = String::cast(script->source())->length();
+    Counters::total_old_codegen_source_size.Increment(len);
+  }
   MakeCodePrologue(fun);
   // Generate code.
   const int kInitialBufferSize = 4 * KB;
@@ -344,6 +348,7 @@
   {&CodeGenerator::GenerateRandomPositiveSmi, "_RandomPositiveSmi"},
   {&CodeGenerator::GenerateIsObject, "_IsObject"},
   {&CodeGenerator::GenerateIsFunction, "_IsFunction"},
+  {&CodeGenerator::GenerateIsUndetectableObject, "_IsUndetectableObject"},
   {&CodeGenerator::GenerateStringAdd, "_StringAdd"},
   {&CodeGenerator::GenerateSubString, "_SubString"},
   {&CodeGenerator::GenerateStringCompare, "_StringCompare"},