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_gvn_pre, /**< A Firm node was replace because of the GVN-PRE algorithm. */
+ dbg_combo, /**< A Firm node was replace because of the combo algorithm. */
dbg_backend, /**< A Firm subgraph was replaced because of a Backend transformation */
dbg_max /**< Maximum value. */
} dbg_action;