--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr68529-3.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,47 @@
+/* { dg-do compile { target size32plus } } */
+/* { dg-options "-O2 -ftree-loop-distribution -ftree-loop-distribute-patterns -fdump-tree-ldist-details" } */
+
+void bar(char *s);
+int foo1(unsigned short l)
+{
+  char c[10000] = {};
+  unsigned short nchar = 9999;
+
+  while(nchar-- != l)
+    {
+      c[nchar] = 'A';
+    }
+
+  bar (c);
+  return 0;
+}
+
+int foo2()
+{
+  char c[100000] = {};
+  unsigned short nchar;
+
+  for (nchar = 0; nchar != 1000; --nchar)
+    {
+      c[nchar] = 'A';
+    }
+
+  bar (c);
+  return 0;
+}
+
+int foo3()
+{
+  char c[100000] = {};
+  unsigned short nchar;
+
+  for (nchar = 0; nchar != 1000; nchar += 3)
+    {
+      c[nchar] = 'A';
+    }
+
+  bar (c);
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "failed: evolution of offset is not affine" 3 "ldist" } } */