Only flush SharedFunctionInfo optimized code cache when necessary

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5804 matching lines @@
   // Returns -1 when no matching entry is found.
   int SearchOptimizedCodeMap(Context* native_context);
 
   // Installs optimized code from the code map on the given closure. The
   // 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.
+  void EvictFromOptimizedCodeMap(Code* optimized_code, const char* reason);
+
   // Add a new entry to the optimized code map.
   static void AddToOptimizedCodeMap(Handle<SharedFunctionInfo> shared,
                                     Handle<Context> native_context,
                                     Handle<Code> code,
                                     Handle<FixedArray> literals);
   static const int kEntryLength = 3;
 
   // [scope_info]: Scope info.
   DECL_ACCESSORS(scope_info, ScopeInfo)
 
@@ skipping 3753 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_