ARM64: fix DoDeferredTaggedToI

src/arm64/lithium-arm64.cc

 // Copyright 2013 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 1088 matching lines @@
       ASSERT(to.IsInteger32());
       LInstruction* res = NULL;
 
       if (instr->value()->type().IsSmi() ||
           instr->value()->representation().IsSmi()) {
         LOperand* value = UseRegisterAtStart(instr->value());
         res = DefineAsRegister(new(zone()) LSmiUntag(value, false));
       } else {
         LOperand* value = UseRegister(instr->value());
         LOperand* temp1 = TempRegister();
-        LOperand* temp2 =
-            instr->CanTruncateToInt32() ? TempRegister() : FixedTemp(d24);
+        LOperand* temp2 = instr->CanTruncateToInt32() ? NULL : FixedTemp(d24);
         res = DefineAsRegister(new(zone()) LTaggedToI(value, temp1, temp2));
         res = AssignEnvironment(res);
       }
 
       return res;
     }
   } else if (from.IsDouble()) {
     if (to.IsTagged()) {
       info()->MarkAsDeferredCalling();
       LOperand* value = UseRegister(instr->value());
@@ skipping 1447 matching lines @@
 
 LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
   LOperand* receiver = UseRegister(instr->receiver());
   LOperand* function = UseRegister(instr->function());
   LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function);
   return AssignEnvironment(DefineAsRegister(result));
 }
 
 
 } }  // namespace v8::internal