fixed svn properties

[libfirm] / ir / opt / cfopt.c

diff --git a/ir/opt/cfopt.c b/ir/opt/cfopt.c
index e5380d9..945767a 100644 (file)
--- a/ir/opt/cfopt.c
+++ b/ir/opt/cfopt.c
@@ -235,7 +235,7 @@ static void collect_nodes(ir_node *n, void *ctx) {
   } else {
                ir_node *b  = get_nodes_block(n);
 
-               if (op == op_Phi) {
+               if (op == op_Phi && get_irn_arity(n) > 0) {
                        /* Collect Phi nodes to compact ins along with block's ins. */
                        set_irn_link(n, get_irn_link(b));
                        set_irn_link(b, n);