X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbesched.h;h=e5a1bf80308cae475582b924a6d24b605a12a5f0;hb=d21205a7860d7b8a9e7370f45f9e065c77e3c611;hp=06bfdf7091306b597cc2a243ee73976aa8366651;hpb=8ccaa22c4f8f4585c5989bee969a75b7ac974032;p=libfirm

diff --git a/ir/be/besched.h b/ir/be/besched.h
index 06bfdf709..e5a1bf803 100644
--- a/ir/be/besched.h
+++ b/ir/be/besched.h
@@ -1,22 +1,41 @@
-
+/*
+ * Scheduling utilities for nodes in Blocks and Blocks.
+ *
+ * $Id$
+ */
 #ifndef _BESCHED_H
 #define _BESCHED_H
 
 #include <stdio.h>
-#include "irgraph.h"
-#include "irnode.h"
 
-void be_sched_dump(FILE *f, const ir_graph *irg);
+#include "firm_types.h"
+
+void be_sched_dump(FILE *f, ir_graph *irg);
+
+int     sched_get_time_step(const ir_node *irn);
+int     sched_has_next(const ir_node *irn);
+int     sched_has_prev(const ir_node *irn);
+ir_node *sched_next(const ir_node *irn);
+ir_node *sched_prev(const ir_node *irn);
+ir_node *sched_first(const ir_node *block);
+ir_node *sched_last(const ir_node *block);
+ir_node *sched_add_before(ir_node *before, ir_node *irn);
+ir_node *sched_add_after(ir_node *before, ir_node *irn);
+void    sched_remove(ir_node *irn);
+
+/**
+ * Returns the first block of a graphs block schedule.
+ */
+ir_node *sched_irg_first(const ir_graph *irg);
+
+#define sched_is_end(irn) is_Block(irn)
+#define sched_is_begin(irn) is_Block(irn)
+
+#define sched_foreach_from(from, irn) \
+  for(irn = from; !sched_is_end(irn); irn = sched_next(irn))
 
-int (sched_get_time_step)(const ir_node *irn);
-int (sched_has_next)(const ir_node *irn);
-int (sched_has_prev)(const ir_node *irn);
-ir_node *(sched_next)(const ir_node *irn);
-ir_node *(sched_prev)(const ir_node *irn);
-ir_node *(sched_first)(const ir_node *block);
-ir_node *(sched_last)(const ir_node *block);
-ir_node *(sched_add_before)(ir_node *before, ir_node *irn);
-ir_node *(sched_add_before)(ir_node *before, ir_node *irn);
+#define sched_foreach_reverse_from(from, irn) \
+  for(irn = from; !sched_is_begin(irn); irn = sched_prev(irn))
 
 /**
  * A shorthand macro for iterating over a schedule.
@@ -24,7 +43,7 @@ ir_node *(sched_add_before)(ir_node *before, ir_node *irn);
  * @param irn A ir node pointer used as an iterator.
  */
 #define sched_foreach(block,irn) \
-	for(irn = sched_first(block); sched_has_next(irn); irn = sched_next(irn))
+	sched_foreach_from(sched_first(block), irn)
 
 /**
  * A shorthand macro for reversely iterating over a schedule.
@@ -32,6 +51,19 @@ ir_node *(sched_add_before)(ir_node *before, ir_node *irn);
  * @param irn A ir node pointer used as an iterator.
  */
 #define sched_foreach_reverse(block,irn) \
-	for(irn = sched_last(block); sched_has_prev(irn); irn = sched_prev(irn))
+  sched_foreach_reverse_from(sched_last(block), irn)
+
+/**
+ * Calculates a block schedule. The schedule is returned as
+ * an array allocated on the irg's obstack.
+ *
+ * @param irg  the graph to be scheduled
+ *
+ * @return A list of all blocks in schedule order. This list is
+ *         allocated on irg's obstack and is freed if the graph is destroyed.
+ *
+ * This function implements a simple extended block scheduling algorithm.
+ */
+ir_node **sched_create_block_schedule(ir_graph *irg);
 
-#endif
+#endif /* _BESCHED_H */