--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/graphite/pr86479.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,39 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -floop-nest-optimize -fnon-call-exceptions -fno-guess-branch-probability -fno-tree-loop-im" } */
+
+__INTPTR_TYPE__ uf;
+
+void
+m7 (__INTPTR_TYPE__ *aw, __INTPTR_TYPE__ ws)
+{
+  __INTPTR_TYPE__ *e5 = &ws;
+
+  if (ws < 1)
+    {
+      int cq = 0;
+
+      while (cq < 1)
+        {
+          int *ng;
+          int *ud;
+
+          *e5 *= uf < 0;
+
+          for (*ng = 0; *ng < 2; ++*ng)
+            {
+            }
+
+          ws /= cq;
+          *aw *= ws;
+
+          for (*ud = 0; *ud < 2; ++*ud)
+            {
+            }
+        }
+    }
+
+  if (ws < 2)
+    e5 = &uf;
+
+  *e5 = 0;
+}