Turn {mov,add}q into {mov,add}l.

src/x64/stub-cache-x64.cc

 // 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 1176 matching lines @@
       // ... and fill the rest with holes.
       __ Move(kScratchRegister, Factory::the_hole_value());
       for (int i = 1; i < kAllocationDelta; i++) {
         __ movq(Operand(rdx, i * kPointerSize), kScratchRegister);
       }
 
       // Restore receiver to rdx as finish sequence assumes it's here.
       __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize));
 
       // Increment element's and array's sizes.
-      __ addq(FieldOperand(rbx, FixedArray::kLengthOffset),
+      __ addl(FieldOperand(rbx, FixedArray::kLengthOffset),
               Immediate(kAllocationDelta));
       __ movq(FieldOperand(rdx, JSArray::kLengthOffset), rax);
 
       // Elements are in new space, so no remembered set updates are necessary.
       __ ret((argc + 1) * kPointerSize);
 
       __ bind(&call_builtin);
     }
 
     __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPush),
@@ skipping 1152 matching lines @@
   __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
   return GetCode();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal