Do not optimize functions which are in new space.

If there are many shortliving closures, they pollute sampler window and
delay optimizations of functions which should be optimized.

Review URL: http://codereview.chromium.org/6344006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6364 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/runtime-profiler.cc

@@ -134,6 +134,7 @@ void PendingListNode::WeakCallback(v8::Persistent<v8::Value>, void* data) {
 
 
 static bool IsOptimizable(JSFunction* function) {
+  if (Heap::InNewSpace(function)) return false;
   Code* code = function->code();
   return code->kind() == Code::FUNCTION && code->optimizable();
 }