don't rewire keep_alive edges as they often violate SSA dominance properties

[r26788]

diff --git a/ir/be/bessaconstr.c b/ir/be/bessaconstr.c
index fd964c2..96d1104 100644 (file)
--- a/ir/be/bessaconstr.c
+++ b/ir/be/bessaconstr.c
@@ -372,11 +372,11 @@ void be_ssa_construction_fix_users_array(be_ssa_construction_env_t *env,
                        if(env->ignore_uses != NULL     &&
                           ir_nodeset_contains(env->ignore_uses, use))
                                continue;
-                       if(is_Anchor(use))
+                       if(is_Anchor(use) || is_End(use))
                                continue;
 
                        if(is_Phi(use)) {
-                               ir_node *block = get_nodes_block(use);
+                               ir_node *block     = get_nodes_block(use);
                                ir_node *predblock = get_Block_cfgpred_block(block, pos);
                                at = sched_last(predblock);
                        }