re PR other/14918 (-fprofile-generate should be documented as necessary for linking)

	PR other/14918
	* doc/invoke.texi (-fprofile-generate): Document requirement to
	use -fprofile-generate when linking.

From-SVN: r80830

gcc/ChangeLog

 2004-04-18  Mark Mitchell  <mark@codesourcery.com>
 
+	PR other/14918
+	* doc/invoke.texi (-fprofile-generate): Document requirement to
+	use -fprofile-generate when linking.
+
 	* doc/extend.texi (Strong Using): Warn users against using this
 	feature.
 

gcc/doc/invoke.texi

@@ -4378,10 +4378,13 @@ Disabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
 
 @item -fprofile-generate
 @opindex fprofile-generate
-Enable options usually used for instrumenting application to produce profile usefull
-for later recompilation profile feedback based optimization.
 
-The following options are enabled: @code{-fprofile-arcs}, @code{-fprofile-values}, @code{-fvpt}
+Enable options usually used for instrumenting application to produce
+profile useful for later recompilation with profile feedback based
+optimization.  You must use @code{-fprofile-generate} both when
+compiling and when linking your program.
+
+The following options are enabled: @code{-fprofile-arcs}, @code{-fprofile-values}, @code{-fvpt}.
 
 @item -fprofile-use
 @opindex fprofile-use