--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/gomp/reduction-task-1.c	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,86 @@
+int v;
+extern void foo (int);
+
+void
+bar (void)
+{
+  int i;
+  #pragma omp for reduction (task, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp sections reduction (task, +: v)
+  {
+    foo (-2);
+    #pragma omp section
+    foo (-3);
+  }
+  #pragma omp parallel reduction (task, +: v)
+  foo (-1);
+  #pragma omp parallel for reduction (task, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp parallel sections reduction (task, +: v)
+  {
+    foo (-2);
+    #pragma omp section
+    foo (-3);
+  }
+  #pragma omp teams distribute parallel for reduction (task, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp for reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp sections reduction (default, +: v)
+  {
+    foo (-2);
+    #pragma omp section
+    foo (-3);
+  }
+  #pragma omp parallel reduction (default, +: v)
+  foo (-1);
+  #pragma omp parallel for reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp parallel sections reduction (default, +: v)
+  {
+    foo (-2);
+    #pragma omp section
+    foo (-3);
+  }
+  #pragma omp teams distribute parallel for reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp for reduction (default, +: v) nowait
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp sections nowait reduction (default, +: v)
+  {
+    foo (-2);
+    #pragma omp section
+    foo (-3);
+  }
+  #pragma omp simd reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    v++;
+  #pragma omp for simd reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    v++;
+  #pragma omp parallel for simd reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    v++;
+  #pragma omp teams distribute parallel for simd reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    v++;
+  #pragma omp taskloop reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+  #pragma omp taskloop simd reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    v++;
+  #pragma omp teams reduction (default, +: v)
+  foo (i);
+  #pragma omp teams distribute reduction (default, +: v)
+  for (i = 0; i < 64; i++)
+    foo (i);
+}