Fix uses of range analysis results in HChange.

src/a64/lithium-a64.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 1123 matching lines @@
                                                       TempRegister());
         return AssignEnvironment(AssignPointerMap(DefineAsRegister(result)));
       } else {
         STATIC_ASSERT((kMinInt == Smi::kMinValue) &&
                       (kMaxInt == Smi::kMaxValue));
         LOperand* value = UseRegisterAtStart(instr->value());
         return DefineAsRegister(new(zone()) LSmiTag(value));
       }
     } else if (to.IsSmi()) {
       LOperand* value = UseRegisterAtStart(instr->value());
+      LInstruction* result = DefineAsRegister(new(zone()) LSmiTag(value));
       if (instr->value()->CheckFlag(HInstruction::kUint32)) {
-        LUint32ToSmi* result = new(zone()) LUint32ToSmi(value);
-        return AssignEnvironment(DefineAsRegister(result));
-      } else {
-        // This cannot deoptimize because an A64 smi can represent any int32.
-        return DefineAsRegister(new(zone()) LInteger32ToSmi(value));
+        result = AssignEnvironment(result);
       }
+      return result;
     } else {
       ASSERT(to.IsDouble());
       if (instr->value()->CheckFlag(HInstruction::kUint32)) {
         return DefineAsRegister(
             new(zone()) LUint32ToDouble(UseRegisterAtStart(instr->value())));
       } else {
         return DefineAsRegister(
             new(zone()) LInteger32ToDouble(UseRegisterAtStart(instr->value())));
       }
     }
@@ skipping 1396 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