[Driver] Add text description of --help-hidden so it is shown in help

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@327313 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 6925157d2ecffda2e2ecd0cc1de141998dde788a..9337c177d035e76383d6dec4acf699a54cf8ba7c 100644 (file)
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -2401,7 +2401,8 @@ def _for_linker_EQ : Joined<["--"], "for-linker=">, Alias<Xlinker>;
 def _for_linker : Separate<["--"], "for-linker">, Alias<Xlinker>;
 def _force_link_EQ : Joined<["--"], "force-link=">, Alias<u>;
 def _force_link : Separate<["--"], "force-link">, Alias<u>;
-def _help_hidden : Flag<["--"], "help-hidden">;
+def _help_hidden : Flag<["--"], "help-hidden">,
+  HelpText<"Display help for hidden options">;
 def _imacros_EQ : Joined<["--"], "imacros=">, Alias<imacros>;
 def _include_barrier : Flag<["--"], "include-barrier">, Alias<I_>;
 def _include_directory_after_EQ : Joined<["--"], "include-directory-after=">, Alias<idirafter>;