--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-pow-1.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,28 @@
+/* { dg-additional-options "-fno-math-errno -fdisable-tree-sincos" } */
+/* { dg-require-effective-target vect_float } */
+
+void __attribute__ ((noipa))
+f (float *a)
+{
+  a[0] = a[0] * a[0];
+  a[1] = __builtin_powf (a[1], 2);
+  a[2] = a[2] * a[2];
+  a[3] = __builtin_powf (a[3], 2);
+}
+
+float a[4] = { 1, 2, 3, 4 };
+
+int
+main (void)
+{
+  f (a);
+  for (int i = 0; i < 4; ++i)
+    {
+      if (a[i] != (i + 1) * (i + 1))
+	__builtin_abort ();
+      asm volatile ("" ::: "memory");
+    }
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "basic block vectorized" 1 "slp2" } } */