Revert of [strong] Implement strong mode restrictions on property access

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index bdb4a6be1f0232a6bb4c50ab6796f5f55c6e3542..15aa385851db47b46233de986c0a7afc9d5c4b42 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -6392,9 +6392,8 @@
 
 class HLoadNamedGeneric final : public HTemplateInstruction<2> {
  public:
-  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P4(HLoadNamedGeneric, HValue*,
-                                              Handle<Object>, LanguageMode,
-                                              InlineCacheState);
+  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P3(HLoadNamedGeneric, HValue*,
+                                              Handle<Object>, InlineCacheState);
 
   HValue* context() const { return OperandAt(0); }
   HValue* object() const { return OperandAt(1); }
@@ -6422,15 +6421,11 @@
 
   DECLARE_CONCRETE_INSTRUCTION(LoadNamedGeneric)
 
-  LanguageMode language_mode() const { return language_mode_; }
-
  private:
   HLoadNamedGeneric(HValue* context, HValue* object, Handle<Object> name,
-                    LanguageMode language_mode,
                     InlineCacheState initialization_state)
       : name_(name),
         slot_(FeedbackVectorICSlot::Invalid()),
-        language_mode_(language_mode),
         initialization_state_(initialization_state) {
     SetOperandAt(0, context);
     SetOperandAt(1, object);
@@ -6441,7 +6436,6 @@
   Handle<Object> name_;
   Handle<TypeFeedbackVector> feedback_vector_;
   FeedbackVectorICSlot slot_;
-  LanguageMode language_mode_;
   InlineCacheState initialization_state_;
 };
 
@@ -6681,9 +6675,8 @@
 
 class HLoadKeyedGeneric final : public HTemplateInstruction<3> {
  public:
-  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P4(HLoadKeyedGeneric, HValue*,
-                                              HValue*, LanguageMode,
-                                              InlineCacheState);
+  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P3(HLoadKeyedGeneric, HValue*,
+                                              HValue*, InlineCacheState);
   HValue* object() const { return OperandAt(0); }
   HValue* key() const { return OperandAt(1); }
   HValue* context() const { return OperandAt(2); }
@@ -6715,15 +6708,11 @@
 
   DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric)
 
-  LanguageMode language_mode() const { return language_mode_; }
-
  private:
   HLoadKeyedGeneric(HValue* context, HValue* obj, HValue* key,
-                    LanguageMode language_mode,
                     InlineCacheState initialization_state)
       : slot_(FeedbackVectorICSlot::Invalid()),
-        initialization_state_(initialization_state),
-        language_mode_(language_mode) {
+        initialization_state_(initialization_state) {
     set_representation(Representation::Tagged());
     SetOperandAt(0, obj);
     SetOperandAt(1, key);
@@ -6734,7 +6723,6 @@
   Handle<TypeFeedbackVector> feedback_vector_;
   FeedbackVectorICSlot slot_;
   InlineCacheState initialization_state_;
-  LanguageMode language_mode_;
 };