gcc/testsuite/gcc.dg/vect/vect-iv-10.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 i,j;
  12   int ia[N];
  13
  14   /* Induction.  */
  15   for (j=0,i=N;  j<N,i>0;  i--,j++) {
  16     ia[j] = i;
  17   }
  18
  19   /* check results:  */
  20 #pragma GCC novector
  21   for (j=0,i=N;  j<N,i>0;  i--,j++) {
  22       if (ia[j] != i)
  23         abort ();
  24     }
  25
  26   return 0;
  27 }
  28
  29 int main (void)
  30 {
  31   check_vect();
  32
  33   return main1 ();
  34 }
  35
  36 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */