PR14303: Add a NoDriverOption flag to those options which are not accepted by
the driver (the options defined in CC1Options.td) and exclude their help from
"clang --help".

llvm-svn: 167638
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 7d63bf4..464df333 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -564,7 +564,9 @@
 
 void Driver::PrintHelp(bool ShowHidden) const {
   getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
-                      ShowHidden);
+                      /*Include*/0,
+                      /*Exclude*/options::NoDriverOption |
+                      (ShowHidden ? 0 : options::HelpHidden));
 }
 
 void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const {