Add a comment.

llvm-svn: 175412
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index cb207ff..f827122 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3196,6 +3196,7 @@
     CmdArgs.push_back(Args.MakeArgString(Flags.str()));
   }
 
+  // Finally add the command to the compilation.
   C.addCommand(new Command(JA, *this, Exec, CmdArgs));
 
   if (Arg *A = Args.getLastArg(options::OPT_pg))