* tree-cfg.c (tree_try_redirect_by_replacing_jump): Speed up

	by restricting to the case with two outgoing edges.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@91098 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 8 deletions

diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index 1f934cb7ec5..b59c8f7ccbb 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -4247,17 +4247,15 @@ static edge
 tree_try_redirect_by_replacing_jump (edge e, basic_block target)
 {
   basic_block src = e->src;
-  edge tmp;
   block_stmt_iterator b;
   tree stmt;
-  edge_iterator ei;
-
-  /* Verify that all targets will be TARGET.  */
-  FOR_EACH_EDGE (tmp, ei, src->succs)
-    if (tmp->dest != target && tmp != e)
-      break;
 
-  if (tmp)
+  /* We can replace or remove a complex jump only when we have exactly
+     two edges.  */
+  if (EDGE_COUNT (src->succs) != 2
+      /* Verify that all targets will be TARGET.  Specifically, the
+	 edge that is not E must also go to TARGET.  */
+      || EDGE_SUCC (src, EDGE_SUCC (src, 0) == e)->dest != target)
     return NULL;
 
   b = bsi_last (src);