diff --git a/lib/AST/CommentLexer.cpp b/lib/AST/CommentLexer.cpp
index 870db2b..eb0ac24 100644
--- a/lib/AST/CommentLexer.cpp
+++ b/lib/AST/CommentLexer.cpp
@@ -29,32 +29,8 @@
          (C >= 'A' && C <= 'F');
 }
 
-bool isHTMLTagName(StringRef Name) {
-  return llvm::StringSwitch<bool>(Name)
-      .Cases("em", "strong", true)
-      .Cases("tt", "i", "b", "big", "small", true)
-      .Cases("strike", "s", "u", "font", true)
-      .Case("a", true)
-      .Case("hr", true)
-      .Cases("div", "span", true)
-      .Cases("h1", "h2", "h3", true)
-      .Cases("h4", "h5", "h6", true)
-      .Case("code", true)
-      .Case("blockquote", true)
-      .Cases("sub", "sup", true)
-      .Case("img", true)
-      .Case("p", true)
-      .Case("br", true)
-      .Case("pre", true)
-      .Cases("ins", "del", true)
-      .Cases("ul", "ol", "li", true)
-      .Cases("dl", "dt", "dd", true)
-      .Cases("table", "caption", true)
-      .Cases("thead", "tfoot", "tbody", true)
-      .Cases("colgroup", "col", true)
-      .Cases("tr", "th", "td", true)
-      .Default(false);
-}
+#include "clang/AST/CommentHTMLTags.inc"
+
 } // unnamed namespace
 
 StringRef Lexer::resolveHTMLNamedCharacterReference(StringRef Name) const {