--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/loop-versioning-2.c	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,74 @@
+/* { dg-options "-O3 -fdump-tree-lversion-details" } */
+/* { dg-require-effective-target size32plus } */
+
+/* Versioning for step == 1 in these loops would allow loop interchange,
+   but otherwise isn't worthwhile.  At the moment we decide not to version.  */
+
+void
+f1 (double x[][100], int step, int n)
+{
+  for (int i = 0; i < n; ++i)
+    for (int j = 0; j < n; ++j)
+      x[j * step][i] = 100;
+}
+
+void
+f2 (double x[][100], int step, int n)
+{
+  for (int i = 0; i < n; ++i)
+    for (int j = 0; j < n; ++j)
+      x[j][i * step] = 100;
+}
+
+void
+f3 (double x[][100], int step, int limit)
+{
+  for (int i = 0; i < 100; ++i)
+    for (int j = 0; j < limit; j += step)
+      x[j][i] = 100;
+}
+
+void
+f4 (double x[][100], int step, int limit)
+{
+  for (int i = 0; i < limit; i += step)
+    for (int j = 0; j < 100; ++j)
+      x[j][i] = 100;
+}
+
+double x[100][100];
+
+void
+g1 (int step, int n)
+{
+  for (int i = 0; i < n; ++i)
+    for (int j = 0; j < n; ++j)
+      x[j * step][i] = 100;
+}
+
+void
+g2 (int step, int n)
+{
+  for (int i = 0; i < n; ++i)
+    for (int j = 0; j < n; ++j)
+      x[j][i * step] = 100;
+}
+
+void
+g3 (int step, int limit)
+{
+  for (int i = 0; i < 100; ++i)
+    for (int j = 0; j < limit; j += step)
+      x[j][i] = 100;
+}
+
+void
+g4 (int step, int limit)
+{
+  for (int i = 0; i < limit; i += step)
+    for (int j = 0; j < 100; ++j)
+      x[j][i] = 100;
+}
+
+/* { dg-final { scan-tree-dump-not {want to version} "lversion" } } */
+/* { dg-final { scan-tree-dump-not {versioned} "lversion" } } */