gcc/testsuite/c-c++-common/cilk-plus/PS/reduction-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -fcilkplus" } */
   3
   4 /* FIXME: This test has been xfailed until reductions are fixed.  */
   5
   6 int argc = 1;
   7
   8 /* This is a simple vectorization test.  It tests if reduction works
   9    and if it can vectorize the loop in func correctly. */
  10 #define N 1000
  11
  12 int func (int *p, int *q) {
  13     int x = 0;
  14 #pragma simd reduction (+:x)
  15     for (int ii = 0; ii < N; ii++) {
  16         x += (q[ii] + p[ii]);
  17     }
  18     return x;
  19
  20 }
  21
  22 int main ()
  23 {
  24   int ii = 0, x;
  25   int Array[N], Array2[N];
  26
  27   for (ii = 0; ii < N; ii++)
  28     {
  29       Array[ii] = 5 + argc;
  30       Array2[ii] = argc;
  31     }
  32   x = func (Array, Array2);
  33
  34   if (x != N * 7)
  35     return 1;
  36   return 0;
  37 }
  38