Only flush SharedFunctionInfo optimized code cache when necessary

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index eebf3c1b6675dd6dd4e686ade63fabb235e7f820..50bc8e752fe0522e37e7c3f1d6723bd1855b6cfc 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5819,8 +5819,9 @@ class SharedFunctionInfo: public HeapObject {
   // index has to be consistent with a search result as defined above.
   void InstallFromOptimizedCodeMap(JSFunction* function, int index);
 
-  // Clear optimized code map.
-  void ClearOptimizedCodeMap(const char* reason);
+  // Removed a specific optimized code object from the optimized code map, or
+  // all code objects if |optimized_code| is null.
+  void ClearOptimizedCodeMap(Code* optimized_code, const char* reason);

[Michael Starzinger, 2013/05/13 11:33:15]

Can we add a new EvictFromOptimizedCodeMap function instead that does the trick?
Because those are two different actions and IMHO we should have two different
entry points for that. If at some point the ClearOptmizedCodeMap is no longer
needed we can remove it completely.

 
   // Add a new entry to the optimized code map.
   static void AddToOptimizedCodeMap(Handle<SharedFunctionInfo> shared,