gcc/testsuite/gcc.dg/vect/no-scevccp-vect-iv-2.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))
   9 int main1 ()
  10 {
  11   int arr1[N];
  12   int k = 0;
  13   int m = 3, i = 0;
  14
  15   /* Vectorization of induction that is used after the loop.  */
  16
  17    do {
  18         k = k + 2;
  19         arr1[i] = k;
  20         m = m + k;
  21         i++;
  22    } while (i < N);
  23
  24   /* check results:  */
  25   for (i = 0; i < N; i++)
  26     {
  27       if (arr1[i] != 2+2*i)
  28         abort ();
  29     }
  30
  31   return m + k;
  32 }
  33
  34 int main (void)
  35 {
  36   int res;
  37
  38   check_vect ();
  39
  40   res = main1 ();
  41   if (res != 32 + 275)
  42     abort ();
  43
  44   return 0;
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */