*
* @param irg The graph to be optimized.
*
- * After appliying local_optimize_graph() to a IR-graph, Bad nodes
+ * After applying local_optimize_graph() to a IR-graph, Bad nodes
* only occure as predecessor of Block and Phi nodes.
*/
void local_optimize_graph (ir_graph *irg);
* Removes old attributes of nodes. Sets link field to NULL.
* Callee information must be freed (irg_callee_info_none).
*
- * Attention: the numbers assigned to nodes if the library is compiled for
- * development/debugging are not conserved by copying.
- *
* @param irg The graph to be optimized.
*/
void dead_node_elimination(ir_graph *irg);
+typedef struct _survive_dce_t survive_dce_t;
+
+/**
+ * Make a new Survive DCE environment.
+ */
+survive_dce_t *new_survive_dce(void);
+
+/**
+ * Free a Survive DCE environment.
+ */
+void free_survive_dce(survive_dce_t *sd);
+
+/**
+ * Register a node pointer to be patched upon DCE.
+ * When DCE occurs, the node pointer specified by @p place will be
+ * patched to the new address of the node it is pointing to.
+ *
+ * @param sd The Survive DCE environment.
+ * @param place The address of the node pointer.
+ */
+void survive_dce_register_irn(survive_dce_t *sd, ir_node **place);
+
/** Cleans the control flow from Bad predecesors.
*
* Removes Bad predecesors from Blocks and the corresponding
/** Code Placement.
*
- * Pinns all floating nodes to a block where they
+ * Pins all floating nodes to a block where they
* will be executed only if needed. Depends on the flag opt_global_cse.
* Graph may not be in phase_building. Does not schedule control dead
* code. Uses dominator information which it computes if the irg is not
* A critical control flow edge is an edge from a block with several
* control exits to a block with several control entries (See Muchnic
* p. 407).
- * Is only executed if flag set_opt_critical_edges() is set.
*
* @param irg IR Graph
*/