* cfg.c (unchecked_make_edge): Call execute_on_growing_pred

	after making an edge.
	(remove_edge): Call execute_on_shrinking_pred before removing
	an edge.
	(redirect_edge_succ): Call execute_on_growing_pred and
	execute_on_shrinking_pred.
	* cfghooks.c (execute_on_growing_pred): New.
	(execute_on_shrinking_pred): Likewise.
	* cfghooks.h (cfg_hooks): Add execute_on_growing_pred and
	execute_on_shrinking_pred.
	Add prototypes for execute_on_growing_pred and
	execute_on_shrinking_pred.
	* cfgrtl.c (rtl_cfg_hooks): Add NULL hooks to
	execute_on_growing_pred and execute_on_shrinking_pred.
	(cfg_layout_rtl_cfg_hook): Likewise.
	* tree-cfg.c (tree_cfg_hooks): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@91035 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 20 insertions, 0 deletions

diff --git a/gcc/cfghooks.c b/gcc/cfghooks.c
index 841e468bfbb..0f0c230fb80 100644
--- a/gcc/cfghooks.c
+++ b/gcc/cfghooks.c
@@ -804,3 +804,23 @@ flow_call_edges_add (sbitmap blocks)
 
   return (cfg_hooks->flow_call_edges_add) (blocks);
 }
+
+/* This function is called immediately after edge E is added to the
+   edge vector E->dest->preds.  */
+
+void
+execute_on_growing_pred (edge e)
+{
+  if (cfg_hooks->execute_on_growing_pred)
+    cfg_hooks->execute_on_growing_pred (e);
+}
+
+/* This function is called immediately before edge E is removed from
+   the edge vector E->dest->preds.  */
+
+void
+execute_on_shrinking_pred (edge e)
+{
+  if (cfg_hooks->execute_on_shrinking_pred)
+    cfg_hooks->execute_on_shrinking_pred (e);
+}