Remove redundant data member from HChange instructions.

src/hydrogen-instructions.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 708 matching lines @@
 
 void HTypeofIs::PrintDataTo(StringStream* stream) {
   value()->PrintNameTo(stream);
   stream->Add(" == ");
   stream->Add(type_literal_->ToAsciiVector());
 }
 
 
 void HChange::PrintDataTo(StringStream* stream) {
   HUnaryOperation::PrintDataTo(stream);
-  stream->Add(" %s to %s", from_.Mnemonic(), to_.Mnemonic());
+  stream->Add(" %s to %s", from_.Mnemonic(), to().Mnemonic());
 
   if (CanTruncateToInt32()) stream->Add(" truncating-int32");
   if (CheckFlag(kBailoutOnMinusZero)) stream->Add(" -0?");
 }
 
 
 HCheckInstanceType* HCheckInstanceType::NewIsJSObjectOrJSFunction(
     HValue* value)  {
   STATIC_ASSERT((LAST_JS_OBJECT_TYPE + 1) == JS_FUNCTION_TYPE);
   return new HCheckInstanceType(value, FIRST_JS_OBJECT_TYPE, JS_FUNCTION_TYPE);
@@ skipping 884 matching lines @@
 
 
 void HCheckPrototypeMaps::Verify() {
   HInstruction::Verify();
   ASSERT(HasNoUses());
 }
 
 #endif
 
 } }  // namespace v8::internal