gcc/testsuite/gcc.dg/torture/pr78546-1.c

   1 /* PR rtl-optimization/78546 */
   2 /* { dg-do run { target int128 } } */
   3
   4 typedef unsigned __int128 u128;
   5 u128 b;
   6
   7 static inline u128
   8 foo (u128 p1)
   9 {
  10   p1 += ~b;
  11   return -p1;
  12 }
  13
  14 int
  15 main ()
  16 {
  17   asm volatile ("" : : : "memory");
  18   u128 x = foo (~0x7fffffffffffffffLL);
  19   if (x != 0x8000000000000001ULL)
  20     __builtin_abort ();
  21   return 0;
  22 }