- /** mark node as belonging to the prolog. No spill instructions must appear
- * in a schedule before a prolog node */
- arch_irn_flags_prolog = 1U << 5,
- /** mark node as belonging to the epilog. No spill instructions must appear
- * after an epilog node */
- arch_irn_flags_epilog = 1U << 6,
- arch_irn_flags_backend = 1U << 7, /**< begin of custom backend