gcc/testsuite/gcc.dg/vect/pr80815-2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include "tree-vect.h"
   4 int arr[2048];
   5 int res[100] = { 13198, 13224, 12735, 12760, 12270, 12294,
   6                  11803, 11826, 11334, 11356, 10863, 10884,
   7                  10390, 10410, 9915, 9934, 9438, 9456,
   8                  8959, 8976, 8478, 8494, 7995, 8010,
   9                  7510, 7524, 7023, 7036, 6534, 6546,
  10                  6043, 6054, 5550, 5560, 5055, 5064,
  11                  4558, 4566, 4059, 4066, 3558, 3564,
  12                  3055, 3060, 2550, 2554, 2043, 0};
  13
  14 __attribute__ ((noinline)) int
  15 foo (int *a, int *b)
  16 {
  17   int i;
  18   int *a1 = a;
  19   int *a0 = a1 - 512;
  20   for (i = 0; i < 50; i++)
  21     {
  22       *b = *a0 + *a1;
  23       b--;
  24       a0--;
  25       a1--;
  26     }
  27   return 0;
  28 }
  29
  30 int main (void)
  31 {
  32   int *a = &arr[1024];
  33   int *b = &arr[1022];
  34
  35   int i;
  36   for (i = 0; i < 2048; i++)
  37     arr[i] = i;
  38
  39   foo (a, b);
  40
  41   for (i = 973; i < 1020; i++)
  42     if (arr[i] != res[i - 973])
  43       abort ();
  44
  45   return 0;
  46 }