*
* This is the Firm interface to debugging support.
*
- * @author Goetz Lindenmaier
+ * @author Goetz Lindenmaier, Michael Beck
*
* Firm requires a debugging module fulfilling this interface, else no
* debugging information is passed to the backend.
* The interface requires a datatype representing the debugging
* information. Firm supports administrating a reference to the debug
- * information in every firm node. Further Firm optimizations call
+ * information in every Firm node. Further Firm optimizations call
* routines to propagate debug information from old nodes to new nodes
* if the optimization replaces the old ones by the new ones.
*
* An abstract data type containing information for
* debugging support.
*
- * This opaque data type is not defined anywhere in the firm library,
- * but pointers to this type can be stored in firm nodes.
+ * This opaque data type is not defined anywhere in the Firm library,
+ * but pointers to this type can be stored in Firm nodes.
*/
typedef struct dbg_info dbg_info;
/**
* Sets the debug information of a node.
+ *
+ * @param n The node.
+ * @param db The debug info.
*/
void set_irn_dbg_info(ir_node *n, dbg_info *db);
/**
* Returns the debug information of an node.
+ *
+ * @param n The node.
*/
-dbg_info *get_irn_dbg_info(ir_node *n);
+dbg_info *get_irn_dbg_info(const ir_node *n);
/**
* Sets the debug information of an entity.
+ *
+ * @param ent The entity.
+ * @param db The debug info.
*/
-void set_entity_dbg_info(entity *ent, dbg_info *db);
+void set_entity_dbg_info(ir_entity *ent, dbg_info *db);
/**
* Returns the debug information of an entity.
+ *
+ * @param ent The entity.
*/
-dbg_info *get_entity_dbg_info(entity *ent);
+dbg_info *get_entity_dbg_info(const ir_entity *ent);
/**
* Sets the debug information of a type.
+ *
+ * @param tp The type.
+ * @param db The debug info.
*/
-void set_type_dbg_info(type *tp, dbg_info *db);
+void set_type_dbg_info(ir_type *tp, dbg_info *db);
/**
* Returns the debug information of a type.
+ *
+ * @param tp The type.
*/
-dbg_info *get_type_dbg_info(type *tp);
+dbg_info *get_type_dbg_info(const ir_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_ssa, /**< Optimization of the SSA representation, e.g. removal of superfluent Phi nodes. */
dbg_opt_auxnode, /**< Removal of unnecessary auxiliary 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. */
a constant optimization. */
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_opt_confirm, /**< A Firm subgraph was replace because of a Confirmation. */
+ dbg_backend, /**< A Firm subgraph was replaced because of a Backend transformation */
dbg_max /**< Maximum value. */
} dbg_action;
* @param dbg_info_merge_sets see function description
* @param snprint_dbg see function description
*
- * This function takes Pointers to two functions that merge the
+ * This function takes pointers to two functions that merge the
* debug information when a
- * transformation of a firm graph is performed.
+ * transformation of a Firm graph is performed.
* Firm transformations call one of these functions.
*
* - dbg_info_merge_pair() is called in the following situation:
*/
void dbg_init(merge_pair_func *dbg_info_merge_pair, merge_sets_func *dbg_info_merge_sets, snprint_dbg_func *snprint_dbg);
-/** @} */
-
/**
* The default merge_pair_func implementation, simply copies the debug info
- * from old to new.
+ * from the old Firm node to the new one if the new one does not have debug info yet.
+ *
+ * @param nw The new Firm node.
+ * @param old The old Firm node.
+ * @param info The action that cause old node to be replaced by new one.
*/
void default_dbg_info_merge_pair(ir_node *nw, ir_node *old, dbg_action info);
/**
- * The default merge_sets_func implementation, does nothing
+ * The default merge_sets_func implementation. If n_old_nodes is equal 1, copies
+ * the debug info from the old node to all new ones (if they do not have one), else does nothing.
+ *
+ * @param new_nodes An array of new Firm nodes.
+ * @param n_new_nodes The length of the new_nodes array.
+ * @param old_nodes An array of old (replaced) Firm nodes.
+ * @param n_old_nodes The length of the old_nodes array.
+ * @param info The action that cause old node to be replaced by new one.
*/
void default_dbg_info_merge_sets(ir_node **new_nodes, int n_new_nodes,
ir_node **old_nodes, int n_old_nodes,
dbg_action info);
+/** @} */
+
#ifdef __cplusplus
}
#endif
projects / libfirm / blobdiff