/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
#include "firm_types.h"
#include "pset.h"
+#include "irlivechk.h"
#include "bearch.h"
+#include "irnodeset.h"
+
+struct be_irg_t;
typedef enum {
be_lv_state_in = 1,
/**
* Remove a node from the liveness information.
*/
-void be_liveness_remove(be_lv_t *lv, ir_node *irn);
+void be_liveness_remove(be_lv_t *lv, const ir_node *irn);
/**
* Introduce a new node to the liveness information.
* The liveness transfer function.
* Updates a live set over a single step from a given node to its predecessor.
* Everything defined at the node is removed from the set, the uses of the node get inserted.
- * @param arch_env The architecture environment.
* @param cls The register class to consider.
* @param irn The node at which liveness should be computed.
* @param live The set of nodes live before @p irn. This set gets modified by updating it to
* the nodes live after irn.
* @return live.
*/
-pset *be_liveness_transfer(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *irn, pset *live);
+void be_liveness_transfer(const arch_register_class_t *cls, ir_node *node,
+ ir_nodeset_t *nodeset);
/**
* Put all node live at the end of a block into a set.
- * @param arch_env The architecture environment.
* @param cls The register class to consider.
* @param bl The block.
* @param live The set to put them into.
* @return live.
*/
-pset *be_liveness_end_of_block(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *bl, pset *live);
+void be_liveness_end_of_block(const be_lv_t *lv,
+ const arch_register_class_t *cls,
+ const ir_node *bl, ir_nodeset_t *nodeset);
/**
* Compute a set of nodes which are live at another node.
* BEWARE: This is the liveness immediately after the node,
- * so the node itself is alive but it's operands maybe not.
- * @param arch_env The architecture environment.
+ * so the node itself is alive but its operands maybe not.
* @param cls The register class to consider.
* @param pos The node.
* @param live The set to put them into.
- * @return live.
*/
-pset *be_liveness_nodes_live_at(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *pos, pset *live);
+void be_liveness_nodes_live_at(const be_lv_t *lv,
+ const arch_register_class_t *cls,
+ const ir_node *pos, ir_nodeset_t *live);
/**
- * Compute a set of nodes which are live at another node.
- * BEWARE: This is the liveness immediately before the node,
- * so the node itself is not alive but it's operands are.
- * @param arch_env The architecture environment.
- * @param cls The register class to consider.
- * @param pos The node.
- * @param live The set to put them into.
- * @return live.
+ * Make sure the live sets are computed.
+ * @param lv The liveness information.
+ */
+void be_liveness_assure_sets(be_lv_t *lv);
+
+/**
+ * Make sure all information needed for liveness checks is available.
+ * @param lv The liveness information.
+ */
+void be_liveness_assure_chk(be_lv_t *lv);
+
+/**
+ * Invalidate the liveness information.
+ * You must call this if you modify the program and do not
+ * update the liveness with the be_liveness_{update,remove,introduce}
+ * functions.
+ * @param lv The liveness info.
*/
-pset *be_liveness_nodes_live_at_input(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *pos, pset *live);
+void be_liveness_invalidate(be_lv_t *lv);
#endif /* FIRM_BE_BELIVE_H */