From: Alexander Monakov <amonakov@ispras.ru>
Date: Thu, 21 Sep 2017 21:56:16 +0000 (+0300)
Subject: re PR tree-optimization/71702 (dr_group_sort_cmp violates transitivity required for... 
X-Git-Tag: releases/gcc-5.5.0~24
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5280b1967d8dedf7d1abdf403b649adeccb00fce;p=thirdparty%2Fgcc.git

re PR tree-optimization/71702 (dr_group_sort_cmp violates transitivity required for qsort)

PR tree-optimization/71702

	Backport r230667
	2015-11-20  Jim Wilson  <jim.wilson@linaro.org>

	* tree-vect-data-refs.c (compare_tree): Call STRIP_NOPS.

From-SVN: r253081
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ce63706113fc..67f5b9f7b148 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2017-09-22  Alexander Monakov  <amonakov@ispras.ru>
+
+	PR tree-optimization/71702
+	Backport r230667
+	2015-11-20  Jim Wilson  <jim.wilson@linaro.org>
+
+	* tree-vect-data-refs.c (compare_tree): Call STRIP_NOPS.
+
 2017-09-21  Alan Modra  <amodra@gmail.com>
 
 	PR target/81996
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 76a9fd71add1..9cd0f0141d0d 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -2393,6 +2393,8 @@ compare_tree (tree t1, tree t2)
   if (t2 == NULL)
     return 1;
 
+  STRIP_NOPS (t1);
+  STRIP_NOPS (t2);
 
   if (TREE_CODE (t1) != TREE_CODE (t2))
     return TREE_CODE (t1) < TREE_CODE (t2) ? -1 : 1;