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diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangUtil.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangUtil.h
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+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangUtil.h
@@ -0,0 +1,50 @@
+//===-- ClangUtil.h ---------------------------------------------*- 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
+//
+// A collection of helper methods and data structures for manipulating clang
+// types and decls.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTIL_H
+#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTIL_H
+
+#include "clang/AST/DeclBase.h"
+#include "clang/AST/Type.h"
+
+#include "lldb/Symbol/CompilerType.h"
+
+namespace clang {
+class TagDecl;
+}
+
+namespace lldb_private {
+struct ClangUtil {
+  static bool IsClangType(const CompilerType &ct);
+
+  /// Returns the clang::Decl of the given CompilerDecl.
+  /// CompilerDecl has to be valid and represent a clang::Decl.
+  static clang::Decl *GetDecl(const CompilerDecl &decl);
+
+  static clang::QualType GetQualType(const CompilerType &ct);
+
+  static clang::QualType GetCanonicalQualType(const CompilerType &ct);
+
+  static CompilerType RemoveFastQualifiers(const CompilerType &ct);
+
+  static clang::TagDecl *GetAsTagDecl(const CompilerType &type);
+
+  /// Returns a textual representation of the given Decl's AST. Does not
+  /// deserialize any child nodes.
+  static std::string DumpDecl(const clang::Decl *d);
+  /// Returns a textual representation of the given type.
+  static std::string ToString(const clang::Type *t);
+  /// Returns a textual representation of the given CompilerType (assuming
+  /// its underlying type is a Clang type).
+  static std::string ToString(const CompilerType &c);
+};
+}
+
+#endif