Introduce flip-flopping normalisations

[libfirm] / ir / ir / irnode_t.h

diff --git a/ir/ir/irnode_t.h b/ir/ir/irnode_t.h
index ed0a3c9..474fd55 100644 (file)
--- a/ir/ir/irnode_t.h
+++ b/ir/ir/irnode_t.h
@@ -390,10 +390,14 @@ static inline ir_node *_get_Block_cfgpred(const ir_node *node, int pos)
  */
 static inline ir_node  *_get_Block_cfgpred_block(const ir_node *node, int pos)
 {
-       ir_node *res = skip_Proj(get_Block_cfgpred(node, pos));
-       if (!is_Bad(res))
-               res = get_nodes_block(res);
-       return res;
+       ir_node *res = get_Block_cfgpred(node, pos);
+       if (is_Bad(res)) {
+               /* must return a Bad with mode_BB! */
+               ir_graph *irg = get_irn_irg(node);
+               return new_r_Bad(irg, mode_BB);
+       } else {
+               return get_nodes_block(skip_Proj(res));
+       }
 }
 
 static inline ir_visited_t _get_Block_block_visited(const ir_node *node)