gcc/testsuite/gcc.dg/vect/vect-iv-3.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 __attribute__ ((noinline)) int main1 ()
   9 {
  10   int arr1[N];
  11   int arr2[N];
  12   int k = 0;
  13   int m = 3, i = 0;
  14
  15   /* vectorization of induction.
  16      Peeling to align the store is also applied.  */
  17
  18    do {
  19         k = k + 2;
  20         arr1[i] = k;
  21         m = k + 3;
  22         arr2[i] = m;
  23         i++;
  24    } while (i < N);
  25
  26   /* check results:  */
  27   for (i = 0; i < N; i++)
  28     {
  29       if (arr1[i] != 2+2*i || arr2[i] != 5 + 2*i)
  30         abort ();
  31     }
  32
  33   return 0;
  34 }
  35
  36 int main (void)
  37 {
  38   check_vect ();
  39
  40   return main1 ();
  41 }
  42
  43 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */