Turn HCompareHoleAndBranch into a HUnaryControlInstruction.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/24195009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16805 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/lithium-arm.cc

@@ -1756,8 +1756,8 @@ LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
 
 LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
     HCompareHoleAndBranch* instr) {
-  LOperand* object = UseRegisterAtStart(instr->object());
-  return new(zone()) LCmpHoleAndBranch(object);
+  LOperand* value = UseRegisterAtStart(instr->value());
+  return new(zone()) LCmpHoleAndBranch(value);
 }
 
 

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());
 }
 
 

src/hydrogen-instructions.h

@@ -4035,20 +4035,21 @@ class HCompareNumericAndBranch : public HTemplateControlInstruction<2, 2> {
 };
 
 
-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;
@@ -4057,8 +4058,6 @@ class HCompareHoleAndBranch V8_FINAL
     return representation();
   }
 
-  virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
-
   DECLARE_CONCRETE_INSTRUCTION(CompareHoleAndBranch)
 };
 

src/ia32/lithium-ia32.cc

@@ -1748,8 +1748,8 @@ LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
 
 LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
     HCompareHoleAndBranch* instr) {
-  LOperand* object = UseRegisterAtStart(instr->object());
-  return new(zone()) LCmpHoleAndBranch(object);
+  LOperand* value = UseRegisterAtStart(instr->value());
+  return new(zone()) LCmpHoleAndBranch(value);
 }
 
 

src/x64/lithium-x64.cc

@@ -1647,8 +1647,8 @@ LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
 
 LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
     HCompareHoleAndBranch* instr) {
-  LOperand* object = UseRegisterAtStart(instr->object());
-  return new(zone()) LCmpHoleAndBranch(object);
+  LOperand* value = UseRegisterAtStart(instr->value());
+  return new(zone()) LCmpHoleAndBranch(value);
 }