gcc/testsuite/gcc.dg/vect/vect-simd-19.c

   1 /* { dg-additional-options "-fopenmp-simd -fno-tree-vectorize" } */
   2 /* { dg-additional-options "-mavx" { target avx_runtime } } */
   3 /* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" { target i?86-*-* x86_64-*-* } } } */
   4
   5 #include "tree-vect.h"
   6
   7 __attribute__((noipa)) int
   8 foo (int s, int m, int n, int *p)
   9 {
  10   int r = 0, l = 0, i;
  11   #pragma omp simd reduction (+:r) linear(l)
  12   for (i = m; i < n; i += s)
  13     {
  14       p[l++] = i;
  15       r += i * 3;
  16     }
  17   return r;
  18 }
  19
  20 int p[10000 / 78 + 1];
  21
  22 int
  23 main ()
  24 {
  25   int i, r;
  26   check_vect ();
  27   r = foo (78, 0, 10000, p);
  28 #pragma GCC novector
  29   for (i = 0; i < 10000 / 78; i++)
  30     if (p[i] != 78 * i)
  31       abort ();
  32   if (r != (10000 / 78) * (10000 / 78 + 1) / 2 * 78 * 3)
  33     abort ();
  34   r = foo (87, 0, 10000, p);
  35 #pragma GCC novector
  36   for (i = 0; i < 10000 / 87; i++)
  37     if (p[i] != 87 * i)
  38       abort ();
  39   if (r != (10000 / 87) * (10000 / 87 + 1) / 2 * 87 * 3)
  40     abort ();
  41   return 0;
  42 }