tree.c (tree_fold_gcd): Use FLOOR_MOD_EXPR instead of CEIL_MOD_EXPR.

       * tree.c (tree_fold_gcd): Use FLOOR_MOD_EXPR instead of
       CEIL_MOD_EXPR.

From-SVN: r90028

gcc/ChangeLog

+2004-11-03  Sebastian Pop  <pop@cri.ensmp.fr>
+
+	* tree.c (tree_fold_gcd): Use FLOOR_MOD_EXPR instead of
+	CEIL_MOD_EXPR.
+
 2004-11-03 Jeff Law  <law@redhat.com>
 
 	* stmt.c (expand_case): Speed up code to detect duplicate case

gcc/tree.c

@@ -6029,7 +6029,7 @@ tree_fold_gcd (tree a, tree b)
 
   while (1)
     {
-      a_mod_b = fold (build2 (CEIL_MOD_EXPR, type, a, b));
+      a_mod_b = fold (build2 (FLOOR_MOD_EXPR, type, a, b));
 
       if (!TREE_INT_CST_LOW (a_mod_b)
 	  && !TREE_INT_CST_HIGH (a_mod_b))