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diff --git a/contrib/llvm/include/llvm/Transforms/Utils/SimplifyInstructions.h b/contrib/llvm/include/llvm/Transforms/Utils/SimplifyInstructions.h
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+++ b/contrib/llvm/include/llvm/Transforms/Utils/SimplifyInstructions.h
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+//===- SimplifyInstructions.h - Remove redundant instructions ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a utility pass used for testing the InstructionSimplify analysis.
+// The analysis is applied to every instruction, and if it simplifies then the
+// instruction is replaced by the simplification.  If you are looking for a pass
+// that performs serious instruction folding, use the instcombine pass instead.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_UTILS_SIMPLIFYINSTRUCTIONS_H
+#define LLVM_TRANSFORMS_UTILS_SIMPLIFYINSTRUCTIONS_H
+
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+/// This pass removes redundant instructions.
+class InstSimplifierPass : public PassInfoMixin<InstSimplifierPass> {
+public:
+  PreservedAnalyses run(Function &F, AnalysisManager<Function> &AM);
+};
+} // end namespace llvm
+
+#endif // LLVM_TRANSFORMS_UTILS_SIMPLIFYINSTRUCTIONS_H