Fix bug in r5123, Comparison(), by unusing results before unconditional jump ...

src/x64/codegen-x64.h

 // Copyright 2010 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 477 matching lines @@
 
   // Generate code that computes a shortcutting logical operation.
   void GenerateLogicalBooleanOperation(BinaryOperation* node);
 
   void GenericBinaryOperation(BinaryOperation* expr,
                               OverwriteMode overwrite_mode);
 
   // Emits code sequence that jumps to a JumpTarget if the inputs
   // are both smis.  Cannot be in MacroAssembler because it takes
   // advantage of TypeInfo to skip unneeded checks.
-  void JumpIfBothSmiUsingTypeInfo(Register left,
-                                  Register right,
-                                  TypeInfo left_info,
-                                  TypeInfo right_info,
+  void JumpIfBothSmiUsingTypeInfo(Result* left,
+                                  Result* right,
                                   JumpTarget* both_smi);
 
   // Emits code sequence that jumps to deferred code if the input
   // is not a smi.  Cannot be in MacroAssembler because it takes
   // advantage of TypeInfo to skip unneeded checks.
   void JumpIfNotSmiUsingTypeInfo(Register reg,
                                  TypeInfo type,
                                  DeferredCode* deferred);
 
   // Emits code sequence that jumps to deferred code if the inputs
@@ skipping 571 matching lines @@
     return ObjectBits::encode(object_.code()) |
            AddressBits::encode(addr_.code()) |
            ScratchBits::encode(scratch_.code());
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_CODEGEN_X64_H_