isl_map_gist: use simple hull instead of convex hull

isl is still not very good at computing convex hulls.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index 4775efa..1c298c4 100644 (file)
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -1892,7 +1892,7 @@ error:
 __isl_give isl_map *isl_map_gist(__isl_take isl_map *map,
        __isl_take isl_map *context)
 {
-       return isl_map_gist_basic_map(map, isl_map_convex_hull(context));
+       return isl_map_gist_basic_map(map, isl_map_simple_hull(context));
 }
 
 struct isl_basic_set *isl_basic_set_gist(struct isl_basic_set *bset,