re PR middle-end/68570 (ICE on valid code at -O1, -O2 and -O3 on x86_64-linux-gnu)

	PR middle-end/68570
	* gcc.dg/torture/pr68570.c: New test.

From-SVN: r231163

gcc/testsuite/ChangeLog

+2015-12-02  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/68570
+	* gcc.dg/torture/pr68570.c: New test.
+
 2015-12-02  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/68625

gcc/testsuite/gcc.dg/torture/pr68570.c

+/* PR middle-end/68570 */
+/* { dg-do compile } */
+
+int a, d, e, f, h, i, k;
+
+void
+fn1 ()
+{
+  char m;
+  for (;;)
+    {
+      for (;;)
+        {
+          e = f = 1;
+          if (i)
+            d = h = 0;
+          else
+            a = 0;
+          break;
+        }
+      k = 0;
+      if (f)
+        a = 3;
+      if (d)
+        f = 0;
+      if (a > (i < 1))
+        {
+          if (e)
+            break;
+        }
+      else
+        i = m;
+      k = i ? a : i;
+    }
+}