* gcse.c (gcse_main): Add a comment.

From-SVN: r91729

gcc/ChangeLog

+2004-12-04  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* gcse.c (gcse_main): Add a comment.
+
 2004-12-04  Alan Modra  <amodra@bigpond.net.au>
 
 	* mklibgcc.in: Build shared libgcc and shared libunwind in gcc/.

gcc/gcse.c

@@ -675,7 +675,8 @@ static bool is_too_expensive (const char *);
 
 
 /* Entry point for global common subexpression elimination.
-   F is the first instruction in the function.  */
+   F is the first instruction in the function.  Return nonzero if a
+   change is mode.  */
 
 int
 gcse_main (rtx f, FILE *file)