gcc/testsuite/gcc.dg/vect/vect-iv-11.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdio.h>
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 int main1 (int len)
   8 {
   9   int s = 0;
  10   int i = len;
  11
  12   /* vectorization of induction with reduction.  */
  13   for ( ; i > 1; i -=2)
  14     s += i;
  15
  16   return s;
  17 }
  18
  19 int main (void)
  20 {
  21   int s;
  22   check_vect ();
  23
  24   s = main1 (26);
  25   if (s != 182)
  26     abort ();
  27
  28   return 0;
  29 }
  30
  31 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  32 /* { dg-final { cleanup-tree-dump "vect" } } */