Add OptimizedCodeList and DeoptimizedCodeList to native contexts. Both lists are weak. This makes i…

src/contexts.h

Index: src/contexts.h
diff --git a/src/contexts.h b/src/contexts.h
index 88c3cd981c94e15e58dffc3c1b609d155cee50df..189c215e63904b76aea1dd9493397c2f44f21d2e 100644
--- a/src/contexts.h
+++ b/src/contexts.h
@@ -337,8 +337,10 @@ class Context: public FixedArray {
     // Properties from here are treated as weak references by the full GC.
     // Scavenge treats them as strong references.
     OPTIMIZED_FUNCTIONS_LIST,  // Weak.
-    MAP_CACHE_INDEX,  // Weak.
-    NEXT_CONTEXT_LINK,  // Weak.
+    OPTIMIZED_CODE_LIST,       // Weak.
+    DEOPTIMIZED_CODE_LIST,     // Weak.
+    MAP_CACHE_INDEX,           // Weak.
+    NEXT_CONTEXT_LINK,         // Weak.
 
     // Total number of slots.
     NATIVE_CONTEXT_SLOTS,
@@ -428,11 +430,19 @@ class Context: public FixedArray {
   // Mark the native context with out of memory.
   inline void mark_out_of_memory();
 
-  // A native context hold a list of all functions which have been optimized.
+  // A native context holds a list of all functions with optimized code.
   void AddOptimizedFunction(JSFunction* function);
   void RemoveOptimizedFunction(JSFunction* function);
+  void SetOptimizedFunctionsListHead(Object* head);
   Object* OptimizedFunctionsListHead();
-  void ClearOptimizedFunctions();
+
+  // The native context also stores a list of all optimized code and a
+  // list of all deoptimized code, which are needed by the deoptimizer.
+  void AddOptimizedCode(Code* code);
+  void SetOptimizedCodeListHead(Object* head);
+  Object* OptimizedCodeListHead();
+  void SetDeoptimizedCodeListHead(Object* head);
+  Object* DeoptimizedCodeListHead();
 
   Handle<Object> ErrorMessageForCodeGenerationFromStrings();