--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/vect/pr46032.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,49 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target fopenmp } */
+/* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-fopenmp -fipa-pta" } */
+
+extern void abort (void);
+
+#define nEvents 1000
+
+static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
+init (unsigned *results, unsigned *pData)
+{
+  unsigned int i;
+  for (i = 0; i < nEvents; ++i)
+    pData[i] = i % 3;
+}
+
+static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
+check (unsigned *results)
+{
+  unsigned sum = 0;
+  for (int idx = 0; idx < (int)nEvents; idx++)
+    sum += results[idx];
+
+  if (sum != 1998)
+    abort ();
+}
+
+int
+main (void)
+{
+  unsigned results[nEvents];
+  unsigned pData[nEvents];
+  unsigned coeff = 2;
+
+  init (&results[0], &pData[0]);
+
+#pragma omp parallel for
+  for (int idx = 0; idx < (int)nEvents; idx++)
+    results[idx] = coeff * pData[idx];
+
+  check (&results[0]);
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "note: vectorized 1 loop" 1 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
+/* { dg-final { scan-tree-dump-not "versioning for alias required" "vect" } } */
+