-/**
- * Primitive list scheduling.
- * @date 20.10.2004
- * @author Sebastian Hack
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
*/
-#ifndef _FIRM_LIST_SCHED
-#define _FIRM_LIST_SCHED
-
-#include "irgraph.h"
-#include "irnode.h"
-
-#include "pset.h"
-#include "pmap.h"
-#include "list.h"
+/**
+ * @file
+ * @brief Common functions for creating listscheduling algorithms
+ * @author Sebastian Hack
+ * @date 20.10.2004
+ */
+#ifndef FIRM_BE_BELISTSCHED_H
+#define FIRM_BE_BELISTSCHED_H
-struct _arch_isa_t;
+#include "firm_types.h"
+#include "irnodeset.h"
-typedef struct _list_sched_selector_t list_sched_selector_t;
+#include "be.h"
+#include "be_types.h"
+#include "bearch.h"
/**
* A selector interface which is used by the list schedule framework.
* You can implement your own list scheduler by implementing these
* functions.
*/
-struct _list_sched_selector_t {
+typedef struct list_sched_selector_t {
/**
* Called before a graph is being scheduled.
- * @param isa The isa.
- * @param irg The graph.
- * @return The environment pointer that is passed to all other
- * functions in this struct.
+ * May be NULL.
+ *
+ * @param irg The backend graph.
+ * @return The environment pointer that is passed to all other
+ * functions in this struct.
*/
- void *(*init_graph)(const list_sched_selector_t *vtab, const struct _arch_isa_t *isa, ir_graph *irg);
+ void *(*init_graph)(ir_graph *irg);
/**
* Called before scheduling starts on a block.
- * @param graph_env The environment.
- * @param block The block which is to be scheduled.
+ * May be NULL.
+ *
+ * @param graph_env The environment.
+ * @param block The block which is to be scheduled.
* @return A per-block pointer that is additionally passed to select.
*/
void *(*init_block)(void *graph_env, ir_node *block);
* The selection function.
* It picks one node out of the ready list to be scheduled next.
* The function does not have to delete the node from the ready set.
+ * MUST be implemented.
*
- * @return block_env Some private information as returned by init_block().
- * @param sched_head The schedule so far.
- * @param curr_time The current time step which the picked node
- * will be assigned to.
- * @param ready_list A set containing all ready nodes. Pick one of these
- * nodes.
+ * @param block_env Some private information as returned by init_block().
+ * @param sched_head The schedule so far.
+ * @param ready_set A set containing all ready nodes. Pick one of these nodes.
* @return The chosen node.
*/
- ir_node *(*select)(void *block_env, pset *ready_set);
+ ir_node *(*select)(void *block_env, ir_nodeset_t *ready_set);
/**
- * This function decides, if a node should appear in a schedule.
+ * This function gets executed after a node finally has been made ready.
+ * May be NULL.
+ *
* @param block_env The block environment.
- * @param irn The node.
- * @return 1, if the node should be scheduled, 0 if not.
+ * @param irn The node made ready.
+ * @param pred The previously scheduled node.
*/
- int (*to_appear_in_schedule)(void *block_env, const ir_node *irn);
+ void (*node_ready)(void *block_env, ir_node *irn, ir_node *pred);
+
+ /**
+ * This function gets executed after a node finally has been selected.
+ * May be NULL.
+ *
+ * @param block_env The block environment.
+ * @param irn The selected node.
+ */
+ void (*node_selected)(void *block_env, ir_node *irn);
/**
* Called after a block has been scheduled.
+ * May be NULL.
+ *
* @param env The environment.
* @param block_env The per block environment as returned by init_block().
*/
/**
* Called after a whole graph has been scheduled.
+ * May be NULL.
+ *
* @param env The environment.
*/
void (*finish_graph)(void *env);
-
-};
-
-
-/**
- * A trivial selector, that just selects the first ready node.
- */
-extern const list_sched_selector_t *trivial_selector;
-
-/**
- * A selector that tries to minimize the register pressure.
- * @note Not really operational yet.
- */
-extern const list_sched_selector_t *reg_pressure_selector;
+} list_sched_selector_t;
/**
* List schedule a graph.
* Each block in the graph gets a list head to its link field being the
* head of the schedule. You can walk this list using the functions in
* list.h.
- * @param isa The isa which implements the scheduler.
- * @param irg The graph to schedule.
+ *
+ * @param irg The backend irg.
*/
-void list_sched(const struct _arch_isa_t *isa, ir_graph *irg);
+void be_list_sched_graph(ir_graph *irg, const list_sched_selector_t *selector);
#endif
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