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diff --git a/include/llvm/Analysis/InstructionSimplify.h b/include/llvm/Analysis/InstructionSimplify.h
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+//===-- InstructionSimplify.h - Fold instructions into simpler forms ------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares routines for folding instructions into simpler forms that
+// do not require creating new instructions.  For example, this does constant
+// folding, and can handle identities like (X&0)->0.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
+#define LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
+
+namespace llvm {
+  class Value;
+  class TargetData;
+  
+  /// SimplifyCompare - Given operands for a CmpInst, see if we can
+  /// fold the result.  If not, this returns null.
+  Value *SimplifyCompare(unsigned Predicate, Value *LHS, Value *RHS,
+                         const TargetData *TD = 0);
+  
+  
+  /// SimplifyBinOp - Given operands for a BinaryOperator, see if we can
+  /// fold the result.  If not, this returns null.
+  Value *SimplifyBinOp(unsigned Opcode, Value *LHS, Value *RHS, 
+                       const TargetData *TD = 0);
+  
+} // end namespace llvm
+
+#endif
+