x64: Enable inline smi code patching to reenable the inlined code in

src/x64/full-codegen-x64.cc

 // Copyright 2011 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 1620 matching lines @@
       break;
   }
 
   __ bind(&done);
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitBinaryOp(Token::Value op,
                                      OverwriteMode mode) {
+  __ pop(rdx);
   TypeRecordingBinaryOpStub stub(op, mode);
-  __ pop(rdx);
-  __ CallStub(&stub);
+  EmitCallIC(stub.GetCode(), NULL);  // NULL signals no inlined smi code.
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitAssignment(Expression* expr, int bailout_ast_id) {
   // Invalid left-hand sides are rewritten to have a 'throw
   // ReferenceError' on the left-hand side.
   if (!expr->IsValidLeftHandSide()) {
     VisitForEffect(expr);
     return;
@@ skipping 2083 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64