gcc/testsuite/gcc.dg/vect/vect-112-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 char cb[N];
   9 char cc[N];
  10
  11 __attribute__ ((noinline)) int
  12 main1 (void)
  13 {
  14   int i;
  15   int diff = 0;
  16   int check_diff = 0;
  17   for (i = 0; i < N; i++) {
  18     cb[i] = i + 2;
  19     cc[i] = i + 1;
  20     check_diff += (cb[i] - cc[i]);
  21     asm volatile ("" ::: "memory");
  22   }
  23
  24   /* Cross-iteration cycle.  */
  25   diff = 0;
  26   for (i = 0; i < N; i++) {
  27     diff += (cb[i] - cc[i]);
  28   }
  29
  30   /* Check results.  */
  31   if (diff != check_diff)
  32     abort ();
  33
  34   return 0;
  35 }
  36
  37 int main (void)
  38 {
  39   check_vect ();
  40   return main1 ();
  41 }
  42
  43 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_unpack } } } */
  44
  45