isl_basic_map_remove_dims: properly handle named or nested spaces

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

diff --git a/isl_map.c b/isl_map.c
index 4e41529..0c2cd15 100644 (file)
--- a/isl_map.c
+++ b/isl_map.c
@@ -1443,7 +1443,7 @@ struct isl_basic_map *isl_basic_map_remove_dims(struct isl_basic_map *bmap,
                return NULL;
        isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
                        goto error);
-       if (n == 0)
+       if (n == 0 && !isl_dim_is_named_or_nested(bmap->dim, type))
                return bmap;
        bmap = isl_basic_map_eliminate_vars(bmap,
                        isl_basic_map_offset(bmap, type) - 1 + first, n);