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diff --git a/clang-r353983e/include/clang/Basic/Attributes.h b/clang-r353983e/include/clang/Basic/Attributes.h
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+//===--- Attributes.h - Attributes header -----------------------*- 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_BASIC_ATTRIBUTES_H
+#define LLVM_CLANG_BASIC_ATTRIBUTES_H
+
+#include "clang/Basic/LangOptions.h"
+#include "clang/Basic/TargetInfo.h"
+
+namespace clang {
+
+class IdentifierInfo;
+
+enum class AttrSyntax {
+  /// Is the identifier known as a GNU-style attribute?
+  GNU,
+  /// Is the identifier known as a __declspec-style attribute?
+  Declspec,
+  /// Is the identifier known as a [] Microsoft-style attribute?
+  Microsoft,
+  // Is the identifier known as a C++-style attribute?
+  CXX,
+  // Is the identifier known as a C-style attribute?
+  C,
+  // Is the identifier known as a pragma attribute?
+  Pragma
+};
+
+/// Return the version number associated with the attribute if we
+/// recognize and implement the attribute specified by the given information.
+int hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope,
+                 const IdentifierInfo *Attr, const TargetInfo &Target,
+                 const LangOptions &LangOpts);
+
+} // end namespace clang
+
+#endif // LLVM_CLANG_BASIC_ATTRIBUTES_H