Remove unnecessary member variables in RecordWrite on ARM64.

src/arm64/code-stubs-arm64.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_ARM64_CODE_STUBS_ARM64_H_
 #define V8_ARM64_CODE_STUBS_ARM64_H_
 
 #include "src/code-stubs.h"
 
 namespace v8 {
@@ skipping 315 matching lines @@
   SaveFPRegsMode save_fp_regs_mode() const {
     return SaveFPRegsModeBits::decode(minor_key_);
   }
 
   class ObjectBits: public BitField<int, 0, 5> {};
   class ValueBits: public BitField<int, 5, 5> {};
   class AddressBits: public BitField<int, 10, 5> {};
   class RememberedSetActionBits: public BitField<RememberedSetAction, 15, 1> {};
   class SaveFPRegsModeBits: public BitField<SaveFPRegsMode, 16, 1> {};
 
-  Register object_;
-  Register value_;
-  Register address_;
-  RememberedSetAction remembered_set_action_;
-  SaveFPRegsMode save_fp_regs_mode_;
   Label slow_;
   RegisterAllocation regs_;
 };
 
 
 // Helper to call C++ functions from generated code. The caller must prepare
 // the exit frame before doing the call with GenerateCall.
 class DirectCEntryStub: public PlatformCodeStub {
  public:
   explicit DirectCEntryStub(Isolate* isolate) : PlatformCodeStub(isolate) {}
@@ skipping 55 matching lines @@
   LookupMode mode() const { return LookupModeBits::decode(minor_key_); }
 
   class LookupModeBits: public BitField<LookupMode, 0, 1> {};
 
   DISALLOW_COPY_AND_ASSIGN(NameDictionaryLookupStub);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_CODE_STUBS_ARM64_H_