--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/sms-compare-debug-1.c	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,36 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcompare-debug -fmodulo-sched --param sms-min-sc=1" } */
+
+int a, c, e, f, g;
+void
+h (int i)
+{
+  a = i;
+}
+void
+j (char *i, long k)
+{
+  while (k--)
+    c = *i++;
+}
+void
+l (unsigned char *i, long k)
+{
+  unsigned char *b = i + k;
+  while (i < b)
+    {
+      h (*i);
+      i++;
+    }
+}
+void
+m ()
+{
+  while (e)
+    {
+      float d = g;
+      l ((char *) &d, sizeof (g));
+      if (f)
+	j ((char *) &d, sizeof (g));
+    }
+}