dbg_rem_poly_call, /**< Remove polymorphic call. */
dbg_dead_code, /**< Removing unreachable code, I.e. blocks that are never executed. */
dbg_opt_confirm, /**< A Firm subgraph was replace because of a Confirmation */
+ dbg_backend, /**< Backend transformation */
dbg_max /**< Maximum value. */
} dbg_action;