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diff --git a/include/llvm/Transforms/Scalar/BDCE.h b/include/llvm/Transforms/Scalar/BDCE.h
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+++ b/include/llvm/Transforms/Scalar/BDCE.h
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+//===---- BDCE.cpp - Bit-tracking dead code elimination ---------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Bit-Tracking Dead Code Elimination pass. Some
+// instructions (shifts, some ands, ors, etc.) kill some of their input bits.
+// We track these dead bits and remove instructions that compute only these
+// dead bits.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_SCALAR_BDCE_H
+#define LLVM_TRANSFORMS_SCALAR_BDCE_H
+
+#include "llvm/IR/Function.h"
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+// The Bit-Tracking Dead Code Elimination pass.
+struct BDCEPass : PassInfoMixin<BDCEPass> {
+  PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
+};
+}
+
+#endif // LLVM_TRANSFORMS_SCALAR_BDCE_H