isl_map_gist_basic_map: remove alignment of context divs with all basic maps

[platform/upstream/isl.git] / isl_map_simplify.c

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index 5cb6bfb..b3ceb80 100644 (file)
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -2182,6 +2182,8 @@ struct isl_basic_map *isl_basic_map_gist(struct isl_basic_map *bmap,
 
        bmap = isl_basic_map_remove_redundancies(bmap);
        context = isl_basic_map_remove_redundancies(context);
+       if (!context)
+               goto error;
 
        if (context->n_eq)
                bmap = normalize_divs_in_context(bmap, context);
@@ -2223,8 +2225,6 @@ __isl_give isl_map *isl_map_gist_basic_map(__isl_take isl_map *map,
        map = isl_map_compute_divs(map);
        if (!map)
                goto error;
-       for (i = 0; i < map->n; ++i)
-               context = isl_basic_map_align_divs(context, map->p[i]);
        for (i = map->n - 1; i >= 0; --i) {
                map->p[i] = isl_basic_map_gist(map->p[i],
                                                isl_basic_map_copy(context));