ir_node *perm = get_Proj_pred(arg);
ir_node *orig_val = get_irn_n(perm, get_Proj_proj(arg));
ir_node *dupl = be_new_Copy(cls, chordal_env->irg, arg_block, orig_val);
ir_node *perm = get_Proj_pred(arg);
ir_node *orig_val = get_irn_n(perm, get_Proj_proj(arg));
ir_node *dupl = be_new_Copy(cls, chordal_env->irg, arg_block, orig_val);