* cfgloop.c (flow_loop_entry_edges_find, flow_loop_exit_edges_find,

[pf3gnuchains/gcc-fork.git] / gcc / cfgloop.h

diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h
index 1562736..224d6cf 100644 (file)
--- a/gcc/cfgloop.h
+++ b/gcc/cfgloop.h
@@ -69,9 +69,6 @@ struct loop
   /* Basic block of loop latch.  */
   basic_block latch;
 
-  /* Basic block of loop preheader or NULL if it does not exist.  */
-  basic_block pre_header;
-
   /* For loop unrolling/peeling decision.  */
   struct lpt_decision lpt_decision;
 
@@ -81,14 +78,6 @@ struct loop
   /* Average number of executed insns per iteration.  */
   unsigned av_ninsns;
 
-  /* Array of edges along the preheader extended basic block trace.
-     The source of the first edge is the root node of preheader
-     extended basic block, if it exists.  */
-  edge *pre_header_edges;
-
-  /* Number of edges along the pre_header extended basic block trace.  */
-  int num_pre_header_edges;
-
   /* The first block in the loop.  This is not necessarily the same as
      the loop header.  */
   basic_block first;
@@ -100,21 +89,6 @@ struct loop
   /* Number of blocks contained within the loop.  */
   unsigned num_nodes;
 
-  /* Array of edges that enter the loop.  */
-  edge *entry_edges;
-
-  /* Number of edges that enter the loop.  */
-  int num_entries;
-
-  /* Array of edges that exit the loop.  */
-  edge *exit_edges;
-
-  /* Number of edges that exit the loop.  */
-  int num_exits;
-
-  /* Bitmap of blocks that dominate all exits of the loop.  */
-  sbitmap exits_doms;
-
   /* The loop nesting depth.  */
   int depth;
 
@@ -254,23 +228,13 @@ struct loops
 
 extern struct loops *current_loops;
 
-/* Flags for loop discovery.  */
-
-#define LOOP_TREE              1       /* Build loop hierarchy tree.  */
-#define LOOP_PRE_HEADER                2       /* Analyze loop preheader.  */
-#define LOOP_ENTRY_EDGES       4       /* Find entry edges.  */
-#define LOOP_EXIT_EDGES                8       /* Find exit edges.  */
-#define LOOP_EDGES             (LOOP_ENTRY_EDGES | LOOP_EXIT_EDGES)
-#define LOOP_ALL              15       /* All of the above  */
-
 /* Loop recognition.  */
-extern int flow_loops_find (struct loops *, int flags);
+extern int flow_loops_find (struct loops *);
 extern void flow_loops_free (struct loops *);
 extern void flow_loops_dump (const struct loops *, FILE *,
                             void (*)(const struct loop *, FILE *, int), int);
 extern void flow_loop_dump (const struct loop *, FILE *,
                            void (*)(const struct loop *, FILE *, int), int);
-extern int flow_loop_scan (struct loop *, int);
 extern void flow_loop_free (struct loop *);
 void mark_irreducible_loops (struct loops *);
 void mark_single_exit_loops (struct loops *);
@@ -288,6 +252,8 @@ extern unsigned tree_num_loop_insns (struct loop *);
 extern int num_loop_insns (struct loop *);
 extern int average_num_loop_insns (struct loop *);
 extern unsigned get_loop_level (const struct loop *);
+extern bool loop_exit_edge_p (const struct loop *, edge);
+extern void mark_loop_exit_edges (struct loops *);
 
 /* Loops & cfg manipulation.  */
 extern basic_block *get_loop_body (const struct loop *);