gimple.c (gimple_body): Comments added.

2010-07-04  Jeremie Salvucci  <jeremie.salvucci@free.fr>

	* gimple.c (gimple_body): Comments added.

From-SVN: r161804

gcc/ChangeLog

+2010-07-04  Jeremie Salvucci  <jeremie.salvucci@free.fr>
+
+	* gimple.c (gimple_body): Comments added.
+
 2010-07-04  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/44809

gcc/gimple.c

@@ -1731,7 +1731,10 @@ gimple_set_body (tree fndecl, gimple_seq seq)
 }
 
 
-/* Return the body of GIMPLE statements for function FN.  */
+/* Return the body of GIMPLE statements for function FN.  After the
+   CFG pass, the function body doesn't exist anymore because it has
+   been split up into basic blocks.  In this case, it returns
+   NULL.  */
 
 gimple_seq
 gimple_body (tree fndecl)