libgomp/testsuite/libgomp.c++/task-reduction-7.C

// { dg-additional-options "-Wno-deprecated-openmp" }
typedef __SIZE_TYPE__ size_t;
extern "C" void abort ();

void
bar (int *a, int *b, int *c, int (*d)[2], int (*e)[4], int *f, int *g, size_t n)
{
  #pragma omp task in_reduction (*: a[:n], b[3:n], c[n:n], d[0][:n], e[0][1:n], f[:n], g[1:n])
  {
    a[0] *= 12;
    a[1] *= 13;
    b[3] *= 14;
    b[4] *= 15;
    c[n] *= 16;
    c[n + 1] *= 17;
    d[0][0] *= 18;
    d[0][1] *= 19;
    e[0][1] *= 20;
    e[0][2] *= 21;
    f[0] *= 22;
    f[1] *= 23;
    g[1] *= 24;
    g[2] *= 25;
  }
}

void
foo (size_t n, void *x, void *y)
{
  int a[n], b[n + 3], c[2 * n];
  int (*d)[n] = (int (*)[n]) x;
  int (*e)[n * 2] = (int (*)[n * 2]) y;
  int fb[n], gb[n * 2];
  int (&f)[n] = fb;
  int (&g)[n * 2] = gb;
  int i;
  for (i = 0; i < n; i++)
    {
      a[i] = 1;
      b[i + 3] = 1;
      c[i + n] = 1;
      d[0][i] = 1;
      e[0][i + 1] = 1;
      f[i] = 1;
      g[i + 1] = 1;
    }
  #pragma omp taskgroup task_reduction (*: a, b[3:n], c[n:n], d[0][:n], e[0][1:n], f, g[1:n])
  {
    bar (a, b, c, (int (*)[2]) d, (int (*)[4]) e, &f[0], &g[0], n);
    #pragma omp task in_reduction (*: a, b[3:n], c[n:n], d[0][:n], e[0][1:n], f, g[1:n])
    {
      a[0] *= 2;
      a[1] *= 3;
      b[3] *= 4;
      b[4] *= 5;
      c[n] *= 6;
      c[n + 1] *= 7;
      d[0][0] *= 8;
      d[0][1] *= 9;
      e[0][1] *= 10;
      e[0][2] *= 11;
      f[0] *= 12;
      f[1] *= 13;
      g[1] *= 14;
      g[2] *= 15;
    }
    n = 0;
  }
  if (a[0] != 24 || a[1] != 39 || b[3] != 56 || b[4] != 75)
    abort ();
  if (c[2] != 96 || c[3] != 119 || d[0][0] != 144 || d[0][1] != 171)
    abort ();
  if (e[0][1] != 200 || e[0][2] != 231 || f[0] != 264 || f[1] != 299)
    abort ();
  if (g[1] != 336 || g[2] != 375)
    abort ();
}

void
baz (size_t n, void *x, void *y)
{
  int a[n], b[n + 3], c[2 * n];
  int (*d)[n] = (int (*)[n]) x;
  int (*e)[n * 2] = (int (*)[n * 2]) y;
  int fb[n], gb[n * 2];
  int i;
  for (i = 0; i < n; i++)
    {
      a[i] = 1;
      b[i + 3] = 1;
      c[i + n] = 1;
      d[0][i] = 1;
      e[0][i + 1] = 1;
      fb[i] = 1;
      gb[i + 1] = 1;
    }
  #pragma omp parallel num_threads(2)
  #pragma omp master
  {
    int (&f)[n] = fb;
    int (&g)[n * 2] = gb;
    #pragma omp taskgroup task_reduction (*: a, b[3:n], c[n:n], d[0][:n], e[0][1:n], f, g[1:n])
    {
      bar (a, b, c, (int (*)[2]) d, (int (*)[4]) e, &f[0], &g[0], n);
      #pragma omp task in_reduction (*: a, b[3:n], c[n:n], d[0][:n], e[0][1:n], f, g[1:n])
      {
	a[0] *= 2;
	a[1] *= 3;
	b[3] *= 4;
	b[4] *= 5;
	c[n] *= 6;
	c[n + 1] *= 7;
	d[0][0] *= 8;
	d[0][1] *= 9;
	e[0][1] *= 10;
	e[0][2] *= 11;
	f[0] *= 12;
	f[1] *= 13;
	g[1] *= 14;
	g[2] *= 15;
      }
      n = 0;
    }
  }
  if (a[0] != 24 || a[1] != 39 || b[3] != 56 || b[4] != 75)
    abort ();
  if (c[2] != 96 || c[3] != 119 || d[0][0] != 144 || d[0][1] != 171)
    abort ();
  if (e[0][1] != 200 || e[0][2] != 231 || fb[0] != 264 || fb[1] != 299)
    abort ();
  if (gb[1] != 336 || gb[2] != 375)
    abort ();
}

int
main ()
{
  int d[2], e[4];
  volatile int two;
  two = 2;
  #pragma omp parallel num_threads (2)
  #pragma omp master
  foo (two, (void *) d, (void *) e);
  baz (two, (void *) d, (void *) e);
  return 0;
}