emit premonomorphic ics for loads/stores in optimized code

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index d02a3488e96384698d2cd9f1c4f478549c1d2800..6fa8e62edb23952f537a37363a6f69b7aa9bbfc0 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -6568,13 +6568,14 @@ class HLoadNamedField FINAL : public HTemplateInstruction<2> {
 
 class HLoadNamedGeneric FINAL : public HTemplateInstruction<2> {
  public:
-  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P2(HLoadNamedGeneric, HValue*,
-                                              Handle<Object>);
+  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P3(HLoadNamedGeneric, HValue*,
+                                              Handle<Object>, bool);
 
   HValue* context() const { return OperandAt(0); }
   HValue* object() const { return OperandAt(1); }
   Handle<Object> name() const { return name_; }
 
+  bool emit_megamorphic() const { return emit_megamorphic_; }
   FeedbackVectorICSlot slot() const { return slot_; }
   Handle<TypeFeedbackVector> feedback_vector() const {
     return feedback_vector_;
@@ -6596,8 +6597,11 @@ class HLoadNamedGeneric FINAL : public HTemplateInstruction<2> {
   DECLARE_CONCRETE_INSTRUCTION(LoadNamedGeneric)
 
  private:
-  HLoadNamedGeneric(HValue* context, HValue* object, Handle<Object> name)
-      : name_(name), slot_(FeedbackVectorICSlot::Invalid()) {
+  HLoadNamedGeneric(HValue* context, HValue* object, Handle<Object> name,
+                    bool emit_megamorphic)
+      : name_(name),
+        slot_(FeedbackVectorICSlot::Invalid()),
+        emit_megamorphic_(emit_megamorphic) {
     SetOperandAt(0, context);
     SetOperandAt(1, object);
     set_representation(Representation::Tagged());
@@ -6607,6 +6611,7 @@ class HLoadNamedGeneric FINAL : public HTemplateInstruction<2> {
   Handle<Object> name_;
   Handle<TypeFeedbackVector> feedback_vector_;
   FeedbackVectorICSlot slot_;
+  bool emit_megamorphic_;
 };
 
 
@@ -7060,14 +7065,15 @@ class HStoreNamedField FINAL : public HTemplateInstruction<3> {
 
 class HStoreNamedGeneric FINAL : public HTemplateInstruction<3> {
  public:
-  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P4(HStoreNamedGeneric, HValue*,
+  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P5(HStoreNamedGeneric, HValue*,
                                               Handle<String>, HValue*,
-                                              LanguageMode);
+                                              LanguageMode, bool);
   HValue* object() const { return OperandAt(0); }
   HValue* value() const { return OperandAt(1); }
   HValue* context() const { return OperandAt(2); }
   Handle<String> name() const { return name_; }
   LanguageMode language_mode() const { return language_mode_; }
+  bool emit_megamorphic() const { return emit_megamorphic_; }
 
   std::ostream& PrintDataTo(std::ostream& os) const OVERRIDE;  // NOLINT
 
@@ -7079,8 +7085,11 @@ class HStoreNamedGeneric FINAL : public HTemplateInstruction<3> {
 
  private:
   HStoreNamedGeneric(HValue* context, HValue* object, Handle<String> name,
-                     HValue* value, LanguageMode language_mode)
-      : name_(name), language_mode_(language_mode) {
+                     HValue* value, LanguageMode language_mode,
+                     bool emit_megamorphic)
+      : name_(name),
+        language_mode_(language_mode),
+        emit_megamorphic_(emit_megamorphic) {
     SetOperandAt(0, object);
     SetOperandAt(1, value);
     SetOperandAt(2, context);
@@ -7089,6 +7098,7 @@ class HStoreNamedGeneric FINAL : public HTemplateInstruction<3> {
 
   Handle<String> name_;
   LanguageMode language_mode_;
+  bool emit_megamorphic_;
 };