--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr83364.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,22 @@
+/* PR rtl-optimization/83364 */
+/* { dg-do run } */
+/* { dg-options "-O -fno-forward-propagate -fno-tree-coalesce-vars -fno-tree-ter" } */
+
+int a;
+
+static int __attribute__ ((noinline, noclone))
+foo (unsigned char c)
+{
+  c <<= (long long) c != a;
+  c = c << 7 | c >> 1;
+  return c;
+}
+
+int
+main ()
+{
+  asm volatile ("" : : : "memory");
+  if (foo (0) != 0)
+    __builtin_abort ();
+  return 0;
+}