MIPS64: Fix build after r22709.

src/mips64/lithium-mips64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_MIPS_LITHIUM_MIPS_H_
 #define V8_MIPS_LITHIUM_MIPS_H_
 
 #include "src/hydrogen.h"
 #include "src/lithium.h"
 #include "src/lithium-allocator.h"
@@ skipping 201 matching lines @@
   bool Is##type() const { return opcode() == k##type; }
   LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_PREDICATE)
 #undef DECLARE_PREDICATE
 
   // Declare virtual predicates for instructions that don't have
   // an opcode.
   virtual bool IsGap() const { return false; }
 
   virtual bool IsControl() const { return false; }
 
+  // Try deleting this instruction if possible.
+  virtual bool TryDelete() { return false; }
+
   void set_environment(LEnvironment* env) { environment_ = env; }
   LEnvironment* environment() const { return environment_; }
   bool HasEnvironment() const { return environment_ != NULL; }
 
   void set_pointer_map(LPointerMap* p) { pointer_map_.set(p); }
   LPointerMap* pointer_map() const { return pointer_map_.get(); }
   bool HasPointerMap() const { return pointer_map_.is_set(); }
 
   void set_hydrogen_value(HValue* value) { hydrogen_value_ = value; }
   HValue* hydrogen_value() const { return hydrogen_value_; }
@@ skipping 18 matching lines @@
 
   LOperand* FirstInput() { return InputAt(0); }
   LOperand* Output() { return HasResult() ? result() : NULL; }
 
   virtual bool HasInterestingComment(LCodeGen* gen) const { return true; }
 
 #ifdef DEBUG
   void VerifyCall();
 #endif
 
+  virtual int InputCount() = 0;
+  virtual LOperand* InputAt(int i) = 0;
+
  private:
   // Iterator interface.
   friend class InputIterator;
-  virtual int InputCount() = 0;
-  virtual LOperand* InputAt(int i) = 0;
 
   friend class TempIterator;
   virtual int TempCount() = 0;
   virtual LOperand* TempAt(int i) = 0;
 
   class IsCallBits: public BitField<bool, 0, 1> {};
 
   LEnvironment* environment_;
   SetOncePointer<LPointerMap> pointer_map_;
   HValue* hydrogen_value_;
@@ skipping 2560 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_LITHIUM_MIPS_H_