gcc/testsuite/gcc.dg/tree-ssa/ivopt_mult_3.c

   1 /* { dg-do compile { target {{ i?86-*-* x86_64-*-* } && lp64 } } } */
   2 /* { dg-options "-O2 -m64 -fdump-tree-ivopts-details" } */
   3
   4 /* iv p2 can be eliminated.  */
   5 long foo(long* p, long* p2, int N1, int N2)
   6 {
   7   unsigned long  i = 0;
   8   long* p_limit2 = p2 + N2;
   9   long s = 0;
  10   while (i < N1)
  11     {
  12       p2++;
  13       i++;
  14       if (p2 > p_limit2)
  15         break;
  16       s += p[i];
  17     }
  18   return s;
  19 }
  20
  21 /* { dg-final { scan-tree-dump-times "Replacing exit test: if \\(.*p2.*\\)" 1 "ivopts"} } */