gcc/testsuite/gcc.dg/tree-ssa/ssa-hoist-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 /* From PR21485.  */
   5
   6 long
   7 NumSift (long *array, int b, unsigned long k)
   8 {
   9   if (b)
  10     if (array[k] < array[k + 1L])
  11       ++k;
  12   return array[k];
  13 }
  14
  15 /* There should be only two loads left.  And the final value in the
  16    if (b) arm should be if-converted:
  17      tem1 = array[k];
  18      if (b)
  19        tem1 = MAX (array[k+1], tem1)
  20      return tem1;  */
  21
  22 /* { dg-final { scan-tree-dump-times "= \\*" 2 "optimized" } } */
  23 /* { dg-final { scan-tree-dump-times "MAX_EXPR" 1 "optimized" } } */
  24 /* { dg-final { scan-tree-dump-times "= PHI" 1 "optimized" } } */