re PR tree-optimization/61917 (ICE on valid code at -O3 on x86_64-linux-gnu in…

re PR tree-optimization/61917 (ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913)

	PR tree-optimization/61917
	* gcc.dg/vect/vect-pr61917.c: New file.

From-SVN: r220967

gcc/testsuite/ChangeLog

+2015-02-25  Kai Tietz  <ktietz@redhat.com>
+
+	PR tree-optimization/61917
+	* gcc.dg/vect/vect-pr61917.c: New file.
+
 2015-02-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/65170

gcc/testsuite/gcc.dg/vect/vect-pr61917.c

+/* { dg-do compile } */
+/* { dg-additional-options "-O3" } */
+
+int a, b, c, d;
+
+int
+fn1 ()
+{
+  for (; c; c++)
+    for (b = 0; b < 2; b++)
+      d = a - d;
+  return d; 
+}