gcc/testsuite/gcc.dg/tree-ssa/loadpre7.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-stats" } */
   3 /* We can't eliminate the *p load here in any sane way, as eshup8 may
   4    change it.  */
   5 void
   6 enormlz (x)
   7      unsigned short x[];
   8 {
   9   register unsigned short *p;
  10   p = &x[2];
  11   while ((*p & 0xff00) == 0)
  12     {
  13       eshup8 (x);
  14     }
  15 }
  16 /* { dg-final { scan-tree-dump-times "Eliminated: 0" 1 "pre"} } */
  17 /* { dg-final { cleanup-tree-dump "pre" } } */