cfg.c (unchecked_make_edge): Call execute_on_growing_pred after making an edge.

	* 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.

From-SVN: r91035

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/cfg.c b/gcc/cfg.c
index f7e5a79..563f5e2 100644
--- a/gcc/cfg.c
+++ b/gcc/cfg.c
@@ -277,6 +277,8 @@ unchecked_make_edge (basic_block src, basic_block dst, int flags)
   e->flags = flags;
   e->dest_idx = EDGE_COUNT (dst->preds) - 1;
 
+  execute_on_growing_pred (e);
+
   return e;
 }
 
@@ -358,6 +360,8 @@ remove_edge (edge e)
   bool found = false;
   edge_iterator ei;
 
+  execute_on_shrinking_pred (e);
+
   src = e->src;
   dest = e->dest;
   dest_idx = e->dest_idx;
@@ -394,6 +398,8 @@ redirect_edge_succ (edge e, basic_block new_succ)
   basic_block dest = e->dest;
   unsigned int dest_idx = e->dest_idx;
 
+  execute_on_shrinking_pred (e);
+
   VEC_unordered_remove (edge, dest->preds, dest_idx);
 
   /* If we removed an edge in the middle of the edge vector, we need
@@ -405,6 +411,7 @@ redirect_edge_succ (edge e, basic_block new_succ)
   VEC_safe_push (edge, new_succ->preds, e);
   e->dest = new_succ;
   e->dest_idx = EDGE_COUNT (new_succ->preds) - 1;
+  execute_on_growing_pred (e);
 }
 
 /* Like previous but avoid possible duplicate edge.  */