Fix documentation reference (PR web/71666)

	PR web/71666
	* doc/invoke.texi (-fprofile-use): Fix reference to a section
	where -fprofile-generate is documented.

From-SVN: r242878

gcc/ChangeLog

 2016-11-25  Martin Liska  <mliska@suse.cz>
 
+	PR web/71666
+	* doc/invoke.texi (-fprofile-use): Fix reference to a section
+	where -fprofile-generate is documented.
+
+2016-11-25  Martin Liska  <mliska@suse.cz>
+
 	PR gcov-profile/78086
 	* coverage.c (build_init_ctor): Don't use priority {cd}tors if
 	not supported by a target.  Set priority to 100 if possible.

gcc/doc/invoke.texi

@@ -8921,8 +8921,8 @@ which are generally profitable only with profile feedback available:
 @option{-ftree-vectorize}, and @option{ftree-loop-distribute-patterns}.
 
 Before you can use this option, you must first generate profiling information.
-@xref{Optimize Options}, for information about the @option{-fprofile-generate}
-option.
+@xref{Instrumentation Options}, for information about the
+@option{-fprofile-generate} option.
 
 By default, GCC emits an error message if the feedback profiles do not
 match the source code.  This error can be turned into a warning by using