From: Bin Cheng <bin.cheng@arm.com>
Date: Wed, 5 Jul 2017 11:50:09 +0000 (+0000)
Subject: tree-loop-distribution.c (pass_loop_distribution::execute): Skip if no loops.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=773d92175e93bbd071ed83cf5d043b9e44bcabb0;p=gcc.git

tree-loop-distribution.c (pass_loop_distribution::execute): Skip if no loops.

	* tree-loop-distribution.c (pass_loop_distribution::execute): Skip
	if no loops.

From-SVN: r249984
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fa8c40cacdd..666159bc8e9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-07-05  Bin Cheng  <bin.cheng@arm.com>
+
+	* tree-loop-distribution.c (pass_loop_distribution::execute): Skip
+	if no loops.
+
 2017-07-05  Bin Cheng  <bin.cheng@arm.com>
 
 	* cfgloop.h (struct loop): Add comment.  New field orig_loop_num.
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c
index a60454b5218..9f0c801007c 100644
--- a/gcc/tree-loop-distribution.c
+++ b/gcc/tree-loop-distribution.c
@@ -1758,6 +1758,9 @@ pass_loop_distribution::execute (function *fun)
   control_dependences *cd = NULL;
   auto_vec<loop_p> loops_to_be_destroyed;
 
+  if (number_of_loops (fun) <= 1)
+    return 0;
+
   FOR_ALL_BB_FN (bb, fun)
     {
       gimple_stmt_iterator gsi;