Reland Store OSR'd optimized code on the native context.

src/contexts.h

Index: src/contexts.h
diff --git a/src/contexts.h b/src/contexts.h
index 0ad9d4cb2f79ab210ab10e5beba2e931a78c2a9a..4de630eb7f6146e79f5173582e3eec6313a0affb 100644
--- a/src/contexts.h
+++ b/src/contexts.h
@@ -282,6 +282,7 @@ enum ContextLookupFlags {
   V(OBJECT_FUNCTION_INDEX, JSFunction, object_function)                        \
   V(OBJECT_FUNCTION_PROTOTYPE_MAP_INDEX, Map, object_function_prototype_map)   \
   V(OPAQUE_REFERENCE_FUNCTION_INDEX, JSFunction, opaque_reference_function)    \
+  V(OSR_CODE_TABLE_INDEX, FixedArray, osr_code_table)                          \
   V(PROXY_CALLABLE_MAP_INDEX, Map, proxy_callable_map)                         \
   V(PROXY_CONSTRUCTOR_MAP_INDEX, Map, proxy_constructor_map)                   \
   V(PROXY_FUNCTION_INDEX, JSFunction, proxy_function)                          \
@@ -558,6 +559,27 @@ class Context: public FixedArray {
 
   inline bool HasSameSecurityTokenAs(Context* that);
 
+  // Removes a specific optimized code object from the optimized code map.
+  // In case of non-OSR the code reference is cleared from the cache entry but
+  // the entry itself is left in the map in order to proceed sharing literals.
+  void EvictFromOptimizedCodeMap(Code* optimized_code, const char* reason);
+
+  // Clear optimized code map.
+  void ClearOptimizedCodeMap();
+
+  // A native context keeps track of all osrd optimized functions.
+  inline bool OptimizedCodeMapIsCleared();
+  void SearchOptimizedCodeMap(SharedFunctionInfo* shared, BailoutId osr_ast_id,
+                              Code** pcode, LiteralsArray** pliterals);
+  int SearchOptimizedCodeMapEntry(SharedFunctionInfo* shared,
+                                  BailoutId osr_ast_id);
+
+  static void AddToOptimizedCodeMap(Handle<Context> native_context,
+                                    Handle<SharedFunctionInfo> shared,
+                                    Handle<Code> code,
+                                    Handle<LiteralsArray> literals,
+                                    BailoutId osr_ast_id);
+
   // A native context holds a list of all functions with optimized code.
   void AddOptimizedFunction(JSFunction* function);
   void RemoveOptimizedFunction(JSFunction* function);