1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree.c b/gcc/tree.c
index 2cfcde2..1af25cb 100644
--- a/gcc/tree.c
+++ b/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))