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diff --git a/include/llvm/Transforms/Scalar/LowerAtomic.h b/include/llvm/Transforms/Scalar/LowerAtomic.h
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+++ b/include/llvm/Transforms/Scalar/LowerAtomic.h
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+//===- LowerAtomic.cpp - Lower atomic intrinsics ----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+// This pass lowers atomic intrinsics to non-atomic form for use in a known
+// non-preemptible environment.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_SCALAR_LOWERATOMIC_H
+#define LLVM_TRANSFORMS_SCALAR_LOWERATOMIC_H
+
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+/// A pass that lowers atomic intrinsic into non-atomic intrinsics.
+class LowerAtomicPass : public PassInfoMixin<LowerAtomicPass> {
+public:
+  PreservedAnalyses run(Function &F, FunctionAnalysisManager &);
+};
+}
+
+#endif // LLVM_TRANSFORMS_SCALAR_LOWERATOMIC_H