transform assert to an if, as some students tend to hit it

[r26157]

diff --git a/ir/ana/irdom.c b/ir/ana/irdom.c
index d9a4dc7..4d5ef26 100644 (file)
--- a/ir/ana/irdom.c
+++ b/ir/ana/irdom.c
@@ -503,7 +503,11 @@ static void init_tmp_dom_info(ir_node *bl, tmp_dom_info *parent,
        /* Iterate */
        for (i = get_Block_n_cfg_outs_ka(bl) - 1; i >= 0; --i) {
                ir_node *pred = get_Block_cfg_out_ka(bl, i);
-               assert(is_Block(pred));
+               /* can happen for half-optimized dead code (I've seen this in student
+                  projects */
+               if (!is_Block(pred))
+                       continue;
+
                init_tmp_dom_info(pred, tdi, tdi_list, used, n_blocks);
        }
 }