--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/goacc/reduction-1.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,72 @@
+/* { dg-additional-options "-fdump-tree-gimple" } */
+/* Integer reductions.  */
+
+#define n 1000
+
+int
+main(void)
+{
+  int i;
+  int result, array[n];
+  int lresult;
+
+  /* '+' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (+:result)
+  for (i = 0; i < n; i++)
+    result += array[i];
+
+  /* '*' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (*:result)
+  for (i = 0; i < n; i++)
+    result *= array[i];
+
+  /* 'max' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (max:result)
+  for (i = 0; i < n; i++)
+    result = result > array[i] ? result : array[i];
+
+  /* 'min' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (min:result)
+  for (i = 0; i < n; i++)
+    result = result < array[i] ? result : array[i];
+
+  /* '&' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (&:result)
+  for (i = 0; i < n; i++)
+    result &= array[i];
+
+  /* '|' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (|:result)
+  for (i = 0; i < n; i++)
+    result |= array[i];
+
+  /* '^' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (^:result)
+  for (i = 0; i < n; i++)
+    result ^= array[i];
+
+  /* '&&' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (&&:lresult)
+  for (i = 0; i < n; i++)
+    lresult = lresult && (result > array[i]);
+
+  /* '||' reductions.  */
+#pragma acc parallel
+#pragma acc loop gang worker vector reduction (||:lresult)
+  for (i = 0; i < n; i++)
+    lresult = lresult || (result > array[i]);
+
+  return 0;
+}
+
+/* Check that default copy maps are generated for loop reductions.  */
+/* { dg-final { scan-tree-dump-times "map\\(tofrom:result \\\[len: \[0-9\]+\\\]\\)" 7 "gimple" } } */
+/* { dg-final { scan-tree-dump-times "map\\(tofrom:lresult \\\[len: \[0-9\]+\\\]\\)" 2 "gimple" } } */