Revert change 2745 because of assertion failures in debug mode....

src/x64/codegen-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 4568 matching lines @@
 
   // All extension objects were empty and it is safe to use a global
   // load IC call.
   LoadGlobal();
   frame_->Push(slot->var()->name());
   RelocInfo::Mode mode = (typeof_state == INSIDE_TYPEOF)
                          ? RelocInfo::CODE_TARGET
                          : RelocInfo::CODE_TARGET_CONTEXT;
   Result answer = frame_->CallLoadIC(mode);
   // A test rax instruction following the call signals that the inobject
-  // property case was inlined.  Ensure that there is not a test eax
+  // property case was inlined.  Ensure that there is not a test rax
   // instruction here.
   masm_->nop();
   // Discard the global object. The result is in answer.
   frame_->Drop();
   return answer;
 }
 
 
 void CodeGenerator::LoadGlobal() {
   if (in_spilled_code()) {
@@ skipping 3098 matching lines @@
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) < (1 << 15));
   return (static_cast<unsigned>(cc_) << 1) | (strict_ ? 1 : 0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal