From: Jan Hubicka <hubicka@gcc.gnu.org>
Date: Sun, 14 Oct 2012 16:25:49 +0000 (+0000)
Subject: tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Do not predict loops... 
X-Git-Tag: misc/gccgo-go1_1_2~179
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6d96bad253abc02f9e93be5df49de74fb136c7a6;p=thirdparty%2Fgcc.git

tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Do not predict loops with multiple exits realistically.


	* tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Do not
	predict loops with multiple exits realistically.
	* cfgloopanal.c (single_likely_exit): New function.

From-SVN: r192434
---

diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h
index 80af7d8dbc43..95f5d5313da8 100644
--- a/gcc/cfgloop.h
+++ b/gcc/cfgloop.h
@@ -254,7 +254,8 @@ extern basic_block *get_loop_body_in_custom_order (const struct loop *,
 			       int (*) (const void *, const void *));
 
 extern VEC (edge, heap) *get_loop_exit_edges (const struct loop *);
-edge single_exit (const struct loop *);
+extern edge single_exit (const struct loop *);
+extern edge single_likely_exit (struct loop *loop);
 extern unsigned num_loop_branches (const struct loop *);
 
 extern edge loop_preheader_edge (const struct loop *);