gcc/testsuite/gcc.dg/vect/vect-34-big-array.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 struct {
   9   char ca[N];
  10 } s;
  11 char cb[N];
  12
  13 __attribute__ ((noinline))
  14 int main1 ()
  15 {
  16   int i;
  17
  18   for (i = 0; i < N; i++)
  19     {
  20       cb[i] = i*3;
  21       asm volatile ("" ::: "memory");
  22     }
  23   for (i = 0; i < N; i++)
  24     {
  25       s.ca[i] = cb[i];
  26     }
  27
  28   /* check results:  */
  29   for (i = 0; i < N; i++)
  30     {
  31       if (s.ca[i] != cb[i])
  32         abort ();
  33     }
  34
  35   return 0;
  36 }
  37
  38 int main (void)
  39 {
  40   check_vect ();
  41
  42   return main1 ();
  43 }
  44
  45 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */