gcc/testsuite/gcc.dg/vect/vect-strided-store-u32-i2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   7
   8 int a[N*2];
   9 int b[N] = {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30};
  10 int c[N] = {1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31};
  11
  12 __attribute__ ((noinline)) int
  13 main1 (void)
  14 {
  15   int i;
  16
  17   /* Strided access pattern.  */
  18   for (i = 0; i < N/2; i++)
  19     {
  20       a[i*2] = b[i] + c[i];
  21       a[i*2+1] = b[i] * c[i];
  22     }
  23
  24   /* Check results.  */
  25   for (i = 0; i < N/2; i++)
  26     {
  27       if (a[i*2] != b[i] + c[i]
  28           || a[i*2+1] != b[i] * c[i])
  29         abort();
  30     }
  31
  32   return 0;
  33 }
  34
  35 int main (void)
  36 {
  37   check_vect ();
  38   return main1 ();
  39 }
  40
  41 /* Needs interleaving support.  */
  42 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_interleave || vect_strided2 } } } } */
  43 /* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" { xfail { vect_interleave || vect_strided2 } } } } */
  44