gcc/testsuite/gcc.dg/pr93376.c

   1 /* PR target/93376 */
   2 /* { dg-do compile { target int128 } } */
   3 /* { dg-options "-Og -finline-functions-called-once" } */
   4
   5 unsigned a, b, c;
   6
   7 int
   8 bar (int x)
   9 {
  10   short s = __builtin_sub_overflow (~x, 0, &b);
  11   a = __builtin_ffsll (~x);
  12   return __builtin_add_overflow_p (-(unsigned __int128) a, s,
  13                                    (unsigned __int128) 0);
  14 }
  15
  16 void
  17 foo (void)
  18 {
  19   c = bar (0);
  20 }