convex_hull: coalesce set first

diff --git a/isl_convex_hull.c b/isl_convex_hull.c
index be21837..2cd4639 100644 (file)
--- a/isl_convex_hull.c
+++ b/isl_convex_hull.c
@@ -1284,11 +1284,11 @@ static struct isl_basic_set *uset_convex_hull(struct isl_set *set)
        if (isl_set_n_dim(set) == 0)
                return convex_hull_0d(set);
 
+       set = isl_set_coalesce(set);
        set = isl_set_set_rational(set);
 
        if (!set)
                goto error;
-       set = isl_set_normalize(set);
        if (!set)
                return NULL;
        if (set->n == 1) {