benewalloc: fix unknowns being used at phi inputs

[r26370]

diff --git a/ir/be/benewalloc.c b/ir/be/benewalloc.c
index 1fe00e7..d90b47f 100644 (file)
--- a/ir/be/benewalloc.c
+++ b/ir/be/benewalloc.c
@@ -1044,6 +1044,9 @@ static void add_phi_permutations(ir_node *block, int p)
                        continue;
 
                op = get_Phi_pred(node, p);
+               if (!arch_irn_consider_in_reg_alloc(cls, op))
+                       continue;
+
                a  = find_value_in_block_info(pred_info, op);
                assert(a >= 0);