committing ilp based spilling

[libfirm] / ir / be / belistsched.h

diff --git a/ir/be/belistsched.h b/ir/be/belistsched.h
index 8e15ba0..d8cb004 100644 (file)
--- a/ir/be/belistsched.h
+++ b/ir/be/belistsched.h
@@ -7,42 +7,43 @@
 #ifndef _FIRM_LIST_SCHED
 #define _FIRM_LIST_SCHED
 
-#include "irgraph.h"
-#include "irnode.h"
+#include "firm_types.h"
 
-#include "pset.h"
-#include "pmap.h"
-#include "list.h"
+#include "benodesets.h"
+#include "bearch_t.h"
+#include "be.h"
+
+typedef struct _list_sched_selector_t list_sched_selector_t;
 
 /**
  * A selector interface which is used by the list schedule framework.
  * You can implement your own list scheduler by implementing these
  * functions.
  */
-typedef struct _list_sched_selector_t {
+struct _list_sched_selector_t {
+
        /**
         * Called before a graph is being scheduled.
-        * @param irg The graph.
-        * @return The environment pointer that is passed to all other
-        * functions in this struct.
+        * @param arch_env The architecture environment.
+        * @param irg      The graph.
+        * @return         The environment pointer that is passed to all other functions in this struct.
         */
-       void *(*init_graph)(ir_graph *irg);
+       void *(*init_graph)(const list_sched_selector_t *vtab, const arch_env_t *arch_env, ir_graph *irg);
 
        /**
         * Called before scheduling starts on a block.
-        * @param env The environment.
+        * @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 *env, ir_node *block);
+       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.
         *
-        * @param env Some private information as returned by init_graph().
-        * @return block_env Some provate information as returned by init_block().
+        * @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.
@@ -50,25 +51,47 @@ typedef struct _list_sched_selector_t {
         * nodes.
         * @return The chosen node.
         */
-       ir_node *(*select)(void *env, void *block_env,
-                       const struct list_head *sched_head,
-                       int curr_time, pset *ready_set);
+       ir_node *(*select)(void *block_env, nodeset *ready_set);
+
+       /**
+        * This function decides, if a node should appear in a schedule.
+        * @param block_env The block environment.
+        * @param irn       The node.
+        * @return 1, if the node should be scheduled, 0 if not.
+        */
+       int (*to_appear_in_schedule)(void *block_env, const ir_node *irn);
+
+       /**
+        * Returns the execution time of node irn.
+        */
+       unsigned (*exectime)(void *block_env, const ir_node *irn);
+
+       /**
+        * Calculates the latency of executing cycle curr_cycle of node curr in cycle pred_cycle
+        * of node pred.
+        *
+        * @param block_env   The block environment.
+        * @param pred        The previous node.
+        * @param pred_cycle  The previous node execution cycle.
+        * @param curr        The current node.
+        * @param curr_cycle  The current node execution cycle.
+        */
+       unsigned (*latency)(void *block_env, const ir_node *pred, int pred_cycle, const ir_node *curr, int curr_cycle);
 
        /**
         * Called after a block has been scheduled.
         * @param env The environment.
-        * @param block_env The per block environemtn as returned by init_block().
-        * @param block The block that has been finished.
+        * @param block_env The per block environment as returned by init_block().
         */
-       void (*finish_block)(void *env, void *block_env, ir_node *block);
+       void (*finish_block)(void *block_env);
 
        /**
         * Called after a whole graph has been scheduled.
         * @param env The environment.
-        * @param irg The graph.
         */
-       void (*finish_graph)(void *env, ir_graph *irg);
-} list_sched_selector_t;
+       void (*finish_graph)(void *env);
+
+};
 
 
 /**
@@ -76,18 +99,21 @@ typedef struct _list_sched_selector_t {
  */
 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 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 irg The graph to schedule.
- * @param sched_obst An obstack to allocate the lists on.
- * @param map Maps each block to a list head giving the schedule.
- * @param select_func A selection function.
+ *
+ * @param birg        The backend irg.
+ * @param enable_mris Flag indicating if mris preparation should be done
  */
-void list_sched(ir_graph *irg, const list_sched_selector_t *select_func);
-
-
+void list_sched(const be_irg_t *birg, int enable_mris);
 
-#endif
+#endif /* _FIRM_LIST_SCHED */