From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 19 Feb 2013 17:15:53 +0000 (+0100)
Subject: backport: re PR tree-optimization/55110 (Internal compiler error in vectorizable_redu... 
X-Git-Tag: releases/gcc-4.7.3~183
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fdd493a46c6dd95eaf3a5d75b173952a61e7e4e1;p=thirdparty%2Fgcc.git

backport: re PR tree-optimization/55110 (Internal compiler error in vectorizable_reduction, at tree-vect-loop.c:4633)

	Backported from mainline
	2012-11-27  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/55110
	* tree-vect-loop.c (vectorizable_reduction): Don't assert
	that STMT_VINFO_RELATED_STMT of orig_stmt is stmt.

	* gcc.dg/pr55110.c: New test.

From-SVN: r196140
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0f164519f3ac..8221eaf4cff0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2013-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	Backported from mainline
+	2012-11-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/55110
+	* tree-vect-loop.c (vectorizable_reduction): Don't assert
+	that STMT_VINFO_RELATED_STMT of orig_stmt is stmt.
+
 2013-02-18  Richard Biener  <rguenther@suse.de>
 
 	Revert
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 945fbc29ad5a..72de831ef2ff 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2013-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	Backported from mainline
+	2012-11-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/55110
+	* gcc.dg/pr55110.c: New test.
+
 2013-02-18  Richard Biener  <rguenther@suse.de>
 
 	Revert
diff --git a/gcc/testsuite/gcc.dg/pr55110.c b/gcc/testsuite/gcc.dg/pr55110.c
new file mode 100644
index 000000000000..2a031a529084
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr55110.c
@@ -0,0 +1,13 @@
+/* PR tree-optimization/55110 */
+/* { dg-do compile } */
+/* { dg-options "-O1 -ftree-vectorize" } */
+
+int
+foo (int x)
+{
+  int a, b;
+  for (b = 0; b < 8; b++)
+    for (a = 0; a < 2; a++)
+      x /= 3;
+  return x;
+}
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index d9732e24d875..5e7fb6692528 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -4453,7 +4453,6 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi,
   if (orig_stmt)
     {
       orig_stmt_info = vinfo_for_stmt (orig_stmt);
-      gcc_assert (STMT_VINFO_RELATED_STMT (orig_stmt_info) == stmt);
       gcc_assert (STMT_VINFO_IN_PATTERN_P (orig_stmt_info));
       gcc_assert (!STMT_VINFO_IN_PATTERN_P (stmt_info));
     }