Remove unused HIsNumberAndBranch instruction.

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 110 matching lines @@
   V(Goto)                                      \
   V(HasCachedArrayIndexAndBranch)              \
   V(HasInstanceTypeAndBranch)                  \
   V(InnerAllocatedObject)                      \
   V(InstanceOf)                                \
   V(InstanceOfKnownGlobal)                     \
   V(InstanceSize)                              \
   V(InvokeFunction)                            \
   V(IsConstructCallAndBranch)                  \
   V(IsObjectAndBranch)                         \
-  V(IsNumberAndBranch)                         \
   V(IsStringAndBranch)                         \
   V(IsSmiAndBranch)                            \
   V(IsUndetectableAndBranch)                   \
   V(LeaveInlined)                              \
   V(LoadContextSlot)                           \
   V(LoadExternalArrayPointer)                  \
   V(LoadFieldByIndex)                          \
   V(LoadFunctionPrototype)                     \
   V(LoadGlobalCell)                            \
   V(LoadGlobalGeneric)                         \
@@ skipping 2641 matching lines @@
   virtual bool DataEquals(HValue* other) V8_OVERRIDE { return true; }
 
  private:
   explicit HCheckSmi(HValue* value) : HUnaryOperation(value, HType::Smi()) {
     set_representation(Representation::Smi());
     SetFlag(kUseGVN);
   }
 };
 
 
-class HIsNumberAndBranch V8_FINAL : public HUnaryControlInstruction {
- public:
-  explicit HIsNumberAndBranch(HValue* value)
-    : HUnaryControlInstruction(value, NULL, NULL) {
-    SetFlag(kFlexibleRepresentation);
-  }
-
-  virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
-    return Representation::None();
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(IsNumberAndBranch)
-};
-
-
 class HCheckHeapObject V8_FINAL : public HUnaryOperation {
  public:
   DECLARE_INSTRUCTION_FACTORY_P1(HCheckHeapObject, HValue*);
 
   virtual bool HasEscapingOperandAt(int index) V8_OVERRIDE { return false; }
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
     return Representation::Tagged();
   }
 
 #ifdef DEBUG
@@ skipping 4157 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_