From 33f302b5cb4bd8f53caed80afffddb5b1c8b86f7 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Tue, 10 Aug 2010 20:52:31 +0200
Subject: [PATCH] iscc: allow inverse on non-union maps again

---
 iscc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/iscc.c b/iscc.c
index bbae2e3..e2659dc 100644
--- a/iscc.c
+++ b/iscc.c
@@ -1061,7 +1061,9 @@ static struct isl_obj power(struct isl_stream *s, struct isl_obj obj)
 		goto error;
 	}
 	isl_token_free(tok);
-	isl_assert(s->ctx, obj.type == isl_obj_union_map, goto error);
+	isl_assert(s->ctx, is_subtype(obj, isl_obj_union_map), goto error);
+	if (obj.type != isl_obj_union_map)
+		obj = convert(obj, isl_obj_union_map);
 
 	obj.v = isl_union_map_reverse(obj.v);
 	if (!obj.v)
-- 
2.11.4.GIT