re PR tree-optimization/71824 (ICE when compiling libiberty with Graphite loop optimizations)

2017-02-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/71824
	PR tree-optimization/79409
	* gcc.dg/graphite/pr71824-3.c: New testcase.

From-SVN: r245274

gcc/testsuite/ChangeLog

+2017-02-08  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/71824
+	PR tree-optimization/79409
+	* gcc.dg/graphite/pr71824-3.c: New testcase.
+
 2017-02-08  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/79408

gcc/testsuite/gcc.dg/graphite/pr71824-3.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-loop-distribution -floop-nest-optimize" } */
+
+struct
+{
+  int bz;
+} od, ka[2];
+
+int fw;
+
+void
+pc (void)
+{
+  for (od.bz = 0; od.bz < 2; ++od.bz)
+    {
+      ++fw;
+      ka[0] = ka[1];
+    }
+}