From: Jan Hubicka <jh@suse.cz>
Date: Fri, 2 Nov 2012 19:19:15 +0000 (+0100)
Subject: * predict.c (predict_loops): Do not predict infinite loops.
X-Git-Tag: upstream/12.2.0~73127
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f481cd492ab60e2e8bdbbf4e5d0b4745b38b236d;p=platform%2Fupstream%2Fgcc.git

* predict.c (predict_loops): Do not predict infinite loops.

From-SVN: r193101
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 793c493..0f75280 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2012-11-02  Jan Hubicka  <jh@suse.cz>
 
+	* predict.c (predict_loops): Do not predict infinite loops.
+
+2012-11-02  Jan Hubicka  <jh@suse.cz>
+
 	PR middle-end/55079
 	* tree-ssa-loop-niter.c (number_of_iterations_exit): Update
 	MAX field if NITER was folded to contant.
diff --git a/gcc/predict.c b/gcc/predict.c
index 9fc3e71..d27e043 100644
--- a/gcc/predict.c
+++ b/gcc/predict.c
@@ -1403,6 +1403,11 @@ predict_loops (void)
 
       exits = get_loop_exit_edges (loop);
       n_exits = VEC_length (edge, exits);
+      if (!n_exits)
+	{
+          VEC_free (edge, heap, exits);
+	  continue;
+	}
 
       FOR_EACH_VEC_ELT (edge, exits, j, ex)
 	{