Eliminate redundant descriptor ElementTransitionAndStoreDescriptor.

src/code-stubs.h

 // Copyright 2012 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_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/codegen.h"
@@ skipping 2928 matching lines @@
                       StoreModeBits::encode(store_mode));
   }
 
   ElementsKind from_kind() const { return FromBits::decode(sub_minor_key()); }
   ElementsKind to_kind() const { return ToBits::decode(sub_minor_key()); }
   bool is_jsarray() const { return IsJSArrayBits::decode(sub_minor_key()); }
   KeyedAccessStoreMode store_mode() const {
     return StoreModeBits::decode(sub_minor_key());
   }
 
-  // Parameters accessed via CodeStubGraphBuilder::GetParameter()
-  enum ParameterIndices {
-    kValueIndex,
-    kMapIndex,
-    kKeyIndex,
-    kObjectIndex,
-    kParameterCount
-  };
-
-  static const Register ValueRegister() {
-    return ElementTransitionAndStoreDescriptor::ValueRegister();
-  }
-  static const Register MapRegister() {
-    return ElementTransitionAndStoreDescriptor::MapRegister();
-  }
-  static const Register KeyRegister() {
-    return ElementTransitionAndStoreDescriptor::NameRegister();
-  }
-  static const Register ObjectRegister() {
-    return ElementTransitionAndStoreDescriptor::ReceiverRegister();
-  }
-
  private:
   class FromBits : public BitField<ElementsKind, 0, 8> {};
   class ToBits : public BitField<ElementsKind, 8, 8> {};
   class IsJSArrayBits : public BitField<bool, 16, 1> {};
   class StoreModeBits : public BitField<KeyedAccessStoreMode, 17, 4> {};
 
-  DEFINE_CALL_INTERFACE_DESCRIPTOR(ElementTransitionAndStore);
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(StoreTransition);
   DEFINE_HYDROGEN_CODE_STUB(ElementsTransitionAndStore, HydrogenCodeStub);
 };
 
 
 class StoreArrayLiteralElementStub : public PlatformCodeStub {
  public:
   explicit StoreArrayLiteralElementStub(Isolate* isolate)
       : PlatformCodeStub(isolate) { }
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(StoreArrayLiteralElement);
@@ skipping 95 matching lines @@
 #undef DEFINE_PLATFORM_CODE_STUB
 #undef DEFINE_HANDLER_CODE_STUB
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromType(Type* type);
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_