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diff --git a/clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.h b/clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.h
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+++ b/clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.h
@@ -0,0 +1,35 @@
+//===--- AvoidSpinlockCheck.h - clang-tidy-----------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_DARWIN_AVOIDSPINLOCKCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_DARWIN_AVOIDSPINLOCKCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace darwin {
+
+/// Finds usages of OSSpinlock, which is deprecated due to potential livelock
+/// problems.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/darwin-avoid-spinlock.html
+class AvoidSpinlockCheck : public ClangTidyCheck {
+ public:
+  AvoidSpinlockCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+}  // namespace darwin
+}  // namespace tidy
+}  // namespace clang
+
+#endif  // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_DARWIN_AVOIDSPINLOCKCHECK_H