--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/gomp/pr58472.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,16 @@
+/* PR tree-optimization/58472 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wall -fopenmp" } */
+
+float a[1024], b[1024];
+
+float
+foo ()
+{
+  float s = 0.f;
+  unsigned int i;
+#pragma omp simd reduction(+:s)
+  for (i = 0; i < 1024; ++i)
+    s += a[i] * b[i];
+  return s;
+}