Share optimized code for closures.

src/factory.cc

Index: src/factory.cc
===================================================================
--- src/factory.cc	(revision 11394)
+++ src/factory.cc	(working copy)
@@ -562,6 +562,17 @@
     }
     result->set_literals(*literals);

[fschneider, 2012/04/20 14:05:43]

Instead of always allocating a new literals array, check if we can use a shared
literals array from the optimized code map stored, similar to the way we lookup
shared optimized code.

The same strategy has to be implemented for the FastNewClosureStub.

   }
+
+  if (FLAG_cache_optimized_code) {
+    Code* code =
+        function_info->SearchOptimizedCodeMap(context->global_context());
+    if (code != NULL) {
+      result->ReplaceCode(code);
+      return result;
+    }
+  }
+  result->set_next_function_link(isolate()->heap()->undefined_value());

[fschneider, 2012/04/20 14:05:43]

Not needed since next_function_link is already initialized in
Heap::AllocateFunction.

+
   if (V8::UseCrankshaft() &&
       FLAG_always_opt &&
       result->is_compiled() &&