Add a fixme to handleTargetFeatures.

The goal of wanting this to avoid munging the feature list is so
that it can be used for various targets as a way of both adding
and verifying the features that are going to be output into the
IR.

llvm-svn: 249894

clang/include/clang/Basic/TargetInfo.h

@@ -801,6 +801,8 @@ public:
   ///
   /// The target may modify the features list, to change which options are
   /// passed onwards to the backend.
+  /// FIXME: This part should be fixed so that we can change handleTargetFeatures
+  /// to merely a TargetInfo initialization routine.
   ///
   /// \return  False on error.
   virtual bool handleTargetFeatures(std::vector<std::string> &Features,