Change the register allocator so that it no longer tracks references...

src/x64/assembler-x64.cc

 // Copyright 2009 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 550 matching lines @@
   return NULL;
 }
 
 Object* LoadStubCompiler::CompileLoadInterceptor(JSObject* a,
                                                  JSObject* b,
                                                  String* c) {
   UNIMPLEMENTED();
   return NULL;
 }
 
-bool RegisterAllocator::IsReserved(int a) {
-  UNIMPLEMENTED();
-  return false;
-}
-
-RegisterFile RegisterAllocator::Reserved() {
-  UNIMPLEMENTED();
-  return RegisterFile();
-}
-
 const int RelocInfo::kApplyMask = -1;
 
 StackFrame::Type StackFrame::ComputeType(StackFrame::State* a) {
   UNIMPLEMENTED();
   return NONE;
 }
 
 Object* StoreStubCompiler::CompileStoreCallback(JSObject* a,
                                                 AccessorInfo* b,
                                                 String* c) {
@@ skipping 111 matching lines @@
   UNIMPLEMENTED();
   return NULL;
 }
 
 byte* JavaScriptFrame::GetCallerStackPointer() const {
   UNIMPLEMENTED();
   return NULL;
 }
 
 } }  // namespace v8::internal