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 volatile int y = 0;
  12
  13 __attribute__ ((noinline)) int
  14 main1 (void)
  15 {
  16   int i;
  17   int diff = 0;
  18   int check_diff = 0;
  19   for (i = 0; i < N; i++) {
  20     cb[i] = i + 2;
  21     cc[i] = i + 1;
  22     check_diff += (cb[i] - cc[i]);
  23     /* Avoid vectorization.  */
  24     if (y)
  25       abort ();
  26   }
  27
  28   /* Cross-iteration cycle.  */
  29   diff = 0;
  30   for (i = 0; i < N; i++) {
  31     diff += (cb[i] - cc[i]);
  32   }
  33
  34   /* Check results.  */
  35   if (diff != check_diff)
  36     abort ();
  37
  38   return 0;
  39 }
  40
  41 int main (void)
  42 {
  43   check_vect ();
  44   return main1 ();
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_unpack } } } */
  48 /* { dg-final { cleanup-tree-dump "vect" } } */
  49
  50