gcc/testsuite/gcc.dg/tree-ssa/split-path-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fsplit-paths -fdump-tree-split-paths-details -w -fdisable-tree-thread1 -fdisable-tree-thread2" } */
   3
   4 /* Note: Threader causes the infinite loop in val & 1 sooner.  */
   5
   6 unsigned long powi_lookup_cost (unsigned long, unsigned char *);
   7
   8 void
   9 powi_cost (long n)
  10 {
  11   unsigned char cache[256];
  12   unsigned long digit;
  13   unsigned long val;
  14   int result;
  15   while (val >= 256)
  16     {
  17       if (val & 1)
  18         {
  19           result += powi_lookup_cost (digit, cache) + 3 + 1;
  20         }
  21       else
  22         {
  23           val >>= 1;
  24         }
  25     }
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times "Duplicating join block" 1 "split-paths" } } */
  29