[strong] Implement strong property access semantics

src/compiler/js-operator.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_JS_OPERATOR_H_
 #define V8_COMPILER_JS_OPERATOR_H_
 
 #include "src/runtime/runtime.h"
 #include "src/unique.h"
 
@@ skipping 213 matching lines @@
 std::ostream& operator<<(std::ostream&, DynamicContextAccess const&);
 
 DynamicContextAccess const& DynamicContextAccessOf(Operator const*);
 
 
 // Defines the property being loaded from an object by a named load. This is
 // used as a parameter by JSLoadNamed and JSLoadGlobal operators.
 class LoadNamedParameters final {
  public:
   LoadNamedParameters(const Unique<Name>& name, const VectorSlotPair& feedback,
+                      LanguageMode language_mode,
                       ContextualMode contextual_mode)
-      : name_(name), feedback_(feedback), contextual_mode_(contextual_mode) {}
+      : name_(name),
+        feedback_(feedback),
+        language_mode_(language_mode),
+        contextual_mode_(contextual_mode) {}
 
   const Unique<Name>& name() const { return name_; }
+  LanguageMode language_mode() const { return language_mode_; }
   ContextualMode contextual_mode() const { return contextual_mode_; }
 
   const VectorSlotPair& feedback() const { return feedback_; }
 
  private:
   const Unique<Name> name_;
   const VectorSlotPair feedback_;
+  const LanguageMode language_mode_;
   const ContextualMode contextual_mode_;
 };
 
 bool operator==(LoadNamedParameters const&, LoadNamedParameters const&);
 bool operator!=(LoadNamedParameters const&, LoadNamedParameters const&);
 
 size_t hash_value(LoadNamedParameters const&);
 
 std::ostream& operator<<(std::ostream&, LoadNamedParameters const&);
 
 const LoadNamedParameters& LoadNamedParametersOf(const Operator* op);
 
 const LoadNamedParameters& LoadGlobalParametersOf(const Operator* op);
 
 
 // Defines the property being loaded from an object. This is
 // used as a parameter by JSLoadProperty operators.
 class LoadPropertyParameters final {
  public:
-  explicit LoadPropertyParameters(const VectorSlotPair& feedback)
-      : feedback_(feedback) {}
+  explicit LoadPropertyParameters(const VectorSlotPair& feedback,
+                                  LanguageMode language_mode)
+      : feedback_(feedback), language_mode_(language_mode) {}
 
   const VectorSlotPair& feedback() const { return feedback_; }
 
+  LanguageMode language_mode() const { return language_mode_; }
+
  private:
   const VectorSlotPair feedback_;
+  const LanguageMode language_mode_;
 };
 
 bool operator==(LoadPropertyParameters const&, LoadPropertyParameters const&);
 bool operator!=(LoadPropertyParameters const&, LoadPropertyParameters const&);
 
 size_t hash_value(LoadPropertyParameters const&);
 
 std::ostream& operator<<(std::ostream&, LoadPropertyParameters const&);
 
 const LoadPropertyParameters& LoadPropertyParametersOf(const Operator* op);
@@ skipping 122 matching lines @@
   const Operator* CreateLiteralArray(int literal_flags);
   const Operator* CreateLiteralObject(int literal_flags);
 
   const Operator* CallFunction(
       size_t arity, CallFunctionFlags flags, LanguageMode language_mode,
       VectorSlotPair const& feedback = VectorSlotPair());
   const Operator* CallRuntime(Runtime::FunctionId id, size_t arity);
 
   const Operator* CallConstruct(int arguments);
 
-  const Operator* LoadProperty(const VectorSlotPair& feedback);
+  const Operator* LoadProperty(const VectorSlotPair& feedback,
+                               LanguageMode language_mode);
   const Operator* LoadNamed(const Unique<Name>& name,
-                            const VectorSlotPair& feedback);
+                            const VectorSlotPair& feedback,
+                            LanguageMode language_mode);
 
   const Operator* StoreProperty(LanguageMode language_mode,
                                 const VectorSlotPair& feedback);
   const Operator* StoreNamed(LanguageMode language_mode,
                              const Unique<Name>& name,
                              const VectorSlotPair& feedback);
 
   const Operator* DeleteProperty(LanguageMode language_mode);
 
   const Operator* HasProperty();
@@ skipping 41 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(JSOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_OPERATOR_H_