Turn HCompareHoleAndBranch into a HUnaryControlInstruction.

src/hydrogen-instructions.h

 // 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 4017 matching lines @@
   virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
 
   DECLARE_CONCRETE_INSTRUCTION(CompareNumericAndBranch)
 
  private:
   Representation observed_input_representation_[2];
   Token::Value token_;
 };
 
 
-class HCompareHoleAndBranch V8_FINAL
-    : public HTemplateControlInstruction<2, 1> {
+class HCompareHoleAndBranch V8_FINAL : public HUnaryControlInstruction {
  public:
   // TODO(danno): make this private when the IfBuilder properly constructs
   // control flow instructions.
-  explicit HCompareHoleAndBranch(HValue* object) {
+  HCompareHoleAndBranch(HValue* value,
+                        HBasicBlock* true_target = NULL,
+                        HBasicBlock* false_target = NULL)
+      : HUnaryControlInstruction(value, true_target, false_target) {
     SetFlag(kFlexibleRepresentation);
     SetFlag(kAllowUndefinedAsNaN);
-    SetOperandAt(0, object);
   }
 
   DECLARE_INSTRUCTION_FACTORY_P1(HCompareHoleAndBranch, HValue*);
-
-  HValue* object() { return OperandAt(0); }
+  DECLARE_INSTRUCTION_FACTORY_P3(HCompareHoleAndBranch, HValue*,
+                                 HBasicBlock*, HBasicBlock*);
 
   virtual void InferRepresentation(
       HInferRepresentationPhase* h_infer) V8_OVERRIDE;
 
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
     return representation();
   }
 
-  virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
-
   DECLARE_CONCRETE_INSTRUCTION(CompareHoleAndBranch)
 };
 
 
 class HCompareObjectEqAndBranch : public HTemplateControlInstruction<2, 2> {
  public:
   // TODO(danno): make this private when the IfBuilder properly constructs
   // control flow instructions.
   HCompareObjectEqAndBranch(HValue* left,
                             HValue* right) {
@@ skipping 2887 matching lines @@
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_