Turn HCompareHoleAndBranch into a HUnaryControlInstruction.

src/hydrogen-instructions.cc

 // Copyright 2012 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 2839 matching lines @@
 
 
 void HCompareObjectEqAndBranch::PrintDataTo(StringStream* stream) {
   left()->PrintNameTo(stream);
   stream->Add(" ");
   right()->PrintNameTo(stream);
   HControlInstruction::PrintDataTo(stream);
 }
 
 
-void HCompareHoleAndBranch::PrintDataTo(StringStream* stream) {
-  object()->PrintNameTo(stream);
-  HControlInstruction::PrintDataTo(stream);
-}
-
-
 void HCompareHoleAndBranch::InferRepresentation(
     HInferRepresentationPhase* h_infer) {
-  ChangeRepresentation(object()->representation());
+  ChangeRepresentation(value()->representation());
 }
 
 
 void HGoto::PrintDataTo(StringStream* stream) {
   stream->Add("B%d", SuccessorAt(0)->block_id());
 }
 
 
 void HCompareNumericAndBranch::InferRepresentation(
     HInferRepresentationPhase* h_infer) {
@@ skipping 1357 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal