diff --git a/linux-x64/clang/include/clang-tidy/llvm/HeaderGuardCheck.h b/linux-x64/clang/include/clang-tidy/llvm/HeaderGuardCheck.h
new file mode 100644
index 0000000..23f12fd
--- /dev/null
+++ b/linux-x64/clang/include/clang-tidy/llvm/HeaderGuardCheck.h
@@ -0,0 +1,40 @@
+//===--- HeaderGuardCheck.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_LLVM_HEADERGUARDCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_HEADERGUARDCHECK_H
+
+#include "../utils/HeaderGuard.h"
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+/// Finds and fixes header guards that do not adhere to LLVM style.
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/llvm-header-guard.html
+/// The check supports these options:
+///   - `HeaderFileExtensions`: a semicolon-separated list of filename
+///     extensions of header files (The filename extension should not contain
+///     "." prefix). ";h;hh;hpp;hxx" by default.
+///
+///     For extension-less header files, using an empty string or leaving an
+///     empty string between ";" if there are other filename extensions.
+class LLVMHeaderGuardCheck : public utils::HeaderGuardCheck {
+public:
+  LLVMHeaderGuardCheck(StringRef Name, ClangTidyContext *Context);
+
+  bool shouldSuggestEndifComment(StringRef Filename) override { return false; }
+  std::string getHeaderGuard(StringRef Filename, StringRef OldGuard) override;
+};
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_HEADERGUARDCHECK_H
diff --git a/linux-x64/clang/include/clang-tidy/llvm/IncludeOrderCheck.h b/linux-x64/clang/include/clang-tidy/llvm/IncludeOrderCheck.h
new file mode 100644
index 0000000..930fa90
--- /dev/null
+++ b/linux-x64/clang/include/clang-tidy/llvm/IncludeOrderCheck.h
@@ -0,0 +1,33 @@
+//===--- IncludeOrderCheck.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_LLVM_INCLUDEORDERCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_INCLUDEORDERCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+/// Checks the correct order of `#includes`.
+///
+/// See http://llvm.org/docs/CodingStandards.html#include-style
+class IncludeOrderCheck : public ClangTidyCheck {
+public:
+  IncludeOrderCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
+                           Preprocessor *ModuleExpanderPP) override;
+};
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_INCLUDEORDERCHECK_H
diff --git a/linux-x64/clang/include/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.h b/linux-x64/clang/include/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.h
new file mode 100644
index 0000000..723475b
--- /dev/null
+++ b/linux-x64/clang/include/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.h
@@ -0,0 +1,67 @@
+//===--- PreferIsaOrDynCastInConditionalsCheck.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_LLVM_PREFERISAORDYNCASTINCONDITIONALSCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_PREFERISAORDYNCASTINCONDITIONALSCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+/// Looks at conditionals and finds and replaces cases of ``cast<>``, which will
+/// assert rather than return a null pointer, and ``dyn_cast<>`` where
+/// the return value is not captured.  Additionally, finds and replaces cases that match the
+/// pattern ``var && isa<X>(var)``, where ``var`` is evaluated twice.
+///
+/// Finds cases like these:
+/// \code
+///  if (auto x = cast<X>(y)) {}
+///  // is replaced by:
+///  if (auto x = dyn_cast<X>(y)) {}
+///
+///  if (cast<X>(y)) {}
+///  // is replaced by:
+///  if (isa<X>(y)) {}
+///
+///  if (dyn_cast<X>(y)) {}
+///  // is replaced by:
+///  if (isa<X>(y)) {}
+///
+///  if (var && isa<T>(var)) {}
+///  // is replaced by:
+///  if (isa_and_nonnull<T>(var.foo())) {}
+/// \endcode
+///
+///  // Other cases are ignored, e.g.:
+/// \code
+///  if (auto f = cast<Z>(y)->foo()) {}
+///  if (cast<Z>(y)->foo()) {}
+///  if (X.cast(y)) {}
+/// \endcode
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/llvm-prefer-isa-or-dyn-cast-in-conditionals.html
+class PreferIsaOrDynCastInConditionalsCheck : public ClangTidyCheck {
+public:
+  PreferIsaOrDynCastInConditionalsCheck(StringRef Name,
+                                        ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
+    return LangOpts.CPlusPlus;
+  }
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_PREFERISAORDYNCASTINCONDITIONALSCHECK_H
diff --git a/linux-x64/clang/include/clang-tidy/llvm/PreferRegisterOverUnsignedCheck.h b/linux-x64/clang/include/clang-tidy/llvm/PreferRegisterOverUnsignedCheck.h
new file mode 100644
index 0000000..80eaca1
--- /dev/null
+++ b/linux-x64/clang/include/clang-tidy/llvm/PreferRegisterOverUnsignedCheck.h
@@ -0,0 +1,36 @@
+//===--- PreferRegisterOverUnsignedCheck.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_LLVM_PREFERREGISTEROVERUNSIGNEDCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_PREFERREGISTEROVERUNSIGNEDCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+/// Historically, LLVM has used `unsigned` to represent registers. Since then
+/// a `Register` object has been introduced for improved type-safety and make
+/// the code more explicit.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/llvm-prefer-register-over-unsigned.html
+class PreferRegisterOverUnsignedCheck : public ClangTidyCheck {
+public:
+  PreferRegisterOverUnsignedCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_PREFERREGISTEROVERUNSIGNEDCHECK_H
diff --git a/linux-x64/clang/include/clang-tidy/llvm/TwineLocalCheck.h b/linux-x64/clang/include/clang-tidy/llvm/TwineLocalCheck.h
new file mode 100644
index 0000000..e635626
--- /dev/null
+++ b/linux-x64/clang/include/clang-tidy/llvm/TwineLocalCheck.h
@@ -0,0 +1,32 @@
+//===--- TwineLocalCheck.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_LLVM_TWINELOCALCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_TWINELOCALCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+/// Looks for local `Twine` variables which are prone to use after frees and
+/// should be generally avoided.
+class TwineLocalCheck : public ClangTidyCheck {
+public:
+  TwineLocalCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_TWINELOCALCHECK_H