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diff --git a/clang-r353983e/include/llvm/Transforms/Utils/GuardUtils.h b/clang-r353983e/include/llvm/Transforms/Utils/GuardUtils.h
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+//===-- GuardUtils.h - Utils for work with guards ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// Utils that are used to perform transformations related to guards and their
+// conditions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
+#define LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
+
+namespace llvm {
+
+class CallInst;
+class Function;
+
+/// Splits control flow at point of \p Guard, replacing it with explicit branch
+/// by the condition of guard's first argument. The taken branch then goes to
+/// the block that contains  \p Guard's successors, and the non-taken branch
+/// goes to a newly-created deopt block that contains a sole call of the
+/// deoptimize function \p DeoptIntrinsic.
+void makeGuardControlFlowExplicit(Function *DeoptIntrinsic, CallInst *Guard);
+
+} // llvm
+
+#endif // LLVM_TRANSFORMS_UTILS_GUARDUTILS_H