Replace LoadNamedFieldPolymorphic with explicit branches.

src/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 124 matching lines @@
   V(LeaveInlined)                              \
   V(LoadContextSlot)                           \
   V(LoadExternalArrayPointer)                  \
   V(LoadFieldByIndex)                          \
   V(LoadFunctionPrototype)                     \
   V(LoadGlobalCell)                            \
   V(LoadGlobalGeneric)                         \
   V(LoadKeyed)                                 \
   V(LoadKeyedGeneric)                          \
   V(LoadNamedField)                            \
-  V(LoadNamedFieldPolymorphic)                 \
   V(LoadNamedGeneric)                          \
   V(MapEnumLength)                             \
   V(MathFloorOfDiv)                            \
   V(MathMinMax)                                \
   V(Mod)                                       \
   V(Mul)                                       \
   V(OsrEntry)                                  \
   V(OuterContext)                              \
   V(Parameter)                                 \
   V(Power)                                     \
@@ skipping 5435 matching lines @@
     }
     access.SetGVNFlags(this, false);
   }
 
   virtual bool IsDeletable() const { return true; }
 
   HObjectAccess access_;
 };
 
 
-class HLoadNamedFieldPolymorphic: public HTemplateInstruction<2> {
- public:
-  HLoadNamedFieldPolymorphic(HValue* context,
-                             HValue* object,
-                             SmallMapList* types,
-                             Handle<String> name,
-                             Zone* zone);
-
-  HValue* context() { return OperandAt(0); }
-  HValue* object() { return OperandAt(1); }
-  SmallMapList* types() { return &types_; }
-  Handle<String> name() { return name_; }
-  bool need_generic() { return need_generic_; }
-
-  virtual Representation RequiredInputRepresentation(int index) {
-    return Representation::Tagged();
-  }
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadNamedFieldPolymorphic)
-
-  static const int kMaxLoadPolymorphism = 4;
-
-  virtual void FinalizeUniqueValueId();
-
- protected:
-  virtual bool DataEquals(HValue* value);
-
- private:
-  SmallMapList types_;
-  Handle<String> name_;
-  ZoneList<UniqueValueId> types_unique_ids_;
-  UniqueValueId name_unique_id_;
-  bool need_generic_;
-};
-
-
-
 class HLoadNamedGeneric: public HTemplateInstruction<2> {
  public:
   HLoadNamedGeneric(HValue* context, HValue* object, Handle<Object> name)
       : name_(name) {
     SetOperandAt(0, context);
     SetOperandAt(1, object);
     set_representation(Representation::Tagged());
     SetAllSideEffects();
   }
 
@@ skipping 1128 matching lines @@
   virtual bool IsDeletable() const { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_