--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/vect/pr68445.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int } */
+
+void IMB_double_fast_x (int *destf, int *dest, int y, int *p1f)
+{
+  int i;
+  for (i = y; i > 0; i--)
+    {
+      *dest++ = 0;
+      destf[0] = destf[4] = p1f[0];
+      destf[1] = destf[5] = p1f[1];
+      destf[2] = destf[6] = p1f[2];
+      destf[3] = destf[7] = p1f[3];
+      destf += 8;
+      p1f += 4;
+    }
+}
+
+/* { dg-final { scan-tree-dump "vectorizing stmts using SLP" "vect" } } */