+/**
+ * Sets the debug information of a node.
+ */
+void set_irn_dbg_info(ir_node *n, dbg_info* db);
+
+/**
+ * Returns the debug information of an node.
+ */
+dbg_info *get_irn_dbg_info(ir_node *n);
+
+/**
+ * Sets the debug information of an entity.
+ */
+void set_entity_dbg_info(entity *ent, dbg_info* db);
+
+/**
+ * Returns the debug information of an entity.
+ */
+dbg_info *get_entity_dbg_info(entity *ent);
+
+/**
+ * Sets the debug information of a type.
+ */
+void set_type_dbg_info(type *tp, dbg_info* db);
+
+/**
+ * Returns the debug information of a type.
+ */
+dbg_info *get_type_dbg_info(type *tp);
+
+/**
+ * An enumeration indicating the action performed by a transformation.
+ */
+typedef enum {
+ dbg_error = 0,
+ dbg_opt_ssa, /**< Optimization of the SSA representation, e.g., removal of superfluent phi nodes. */
+ dbg_opt_auxnode, /**< Removal of unnecessary auxilliary nodes. */
+ dbg_const_eval, /**< A Firm subgraph was evaluated to a single constant. */
+ dbg_opt_cse, /**< A Firm node was replaced due to common subexpression elimination. */
+ dbg_straightening, /**< A Firm subgraph was replaced by a single, existing block. */
+ dbg_if_simplification, /**< The control flow of an if is changed as either the
+ else, the then or both blocks are empty. */
+ dbg_algebraic_simplification, /**< A Firm subgraph was replaced because of an algebraic
+ simplification. */
+ dbg_write_after_write, /**< A Firm subgraph was replaced because of a write
+ after write optimization. */
+ dbg_write_after_read, /**< A Firm subgraph was replaced because of a write
+ after read optimization. */
+ dbg_read_after_write, /**< A Firm subgraph was replaced because of a read
+ after write optimization. */
+ dbg_read_after_read, /**< A Firm subgraph was replaced because of a read
+ after read optimization. */
+ dbg_rem_poly_call, /**< Remove polymorphic call. */
+ dbg_dead_code, /**< Removing unreachable code, I.e. blocks that are never executed. */
+ dbg_max /**< Maximum value. */
+
+} dbg_action;
+
+
+/**
+ * Converts enum values to strings.
+ */
+#ifdef __GNUC__
+static const char* dbg_action_2_str(dbg_action) __attribute__ ((unused));
+#endif
+
+static const char* dbg_action_2_str(dbg_action a) {
+ switch(a) {
+ case dbg_error: return "dbg_error"; break;
+ case dbg_opt_ssa: return "dbg_opt_ssa"; break;
+ case dbg_opt_auxnode: return "dbg_opt_auxnode"; break;
+ case dbg_const_eval: return "dbg_const_eval"; break;
+ case dbg_opt_cse: return "dbg_opt_cse"; break;
+ case dbg_straightening: return "dbg_straightening"; break;
+ case dbg_if_simplification: return "dbg_if_simplification"; break;
+ case dbg_algebraic_simplification:
+ return "dbg_algebraic_simplification"; break;
+ case dbg_write_after_write: return "dbg_write_after_write"; break;
+ case dbg_write_after_read: return "dbg_write_after_read"; break;
+ case dbg_read_after_write: return "dbg_read_after_write"; break;
+ case dbg_read_after_read: return "dbg_read_after_read"; break;
+ case dbg_rem_poly_call: return "dbg_rem_poly_call"; break;
+ default:
+ if (a <= dbg_max)
+ return "string conversion not implemented";
+ else
+ assert(0);
+ return NULL;
+ }
+}