Turn HCompareHoleAndBranch into a HUnaryControlInstruction.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 4936a16ca30c1f4bb74acff37a0b6bf2c90dc2b5..afae2b1599903cd74e29557f5c88441ba42e2a0e 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -2857,15 +2857,9 @@ void HCompareObjectEqAndBranch::PrintDataTo(StringStream* stream) {
 }
 
 
-void HCompareHoleAndBranch::PrintDataTo(StringStream* stream) {
-  object()->PrintNameTo(stream);
-  HControlInstruction::PrintDataTo(stream);
-}
-
-
 void HCompareHoleAndBranch::InferRepresentation(
     HInferRepresentationPhase* h_infer) {
-  ChangeRepresentation(object()->representation());
+  ChangeRepresentation(value()->representation());
 }