gcc/testsuite/gcc.dg/pr84614.c

   1 /* PR target/84614 */
   2 /* { dg-do run { target int128 } } */
   3 /* { dg-options "-Og -fno-split-wide-types -fno-tree-coalesce-vars -g --param=max-combine-insns=3 -fcompare-debug" } */
   4
   5 unsigned __int128 a;
   6
   7 unsigned __int128
   8 b (unsigned short c, unsigned int d)
   9 {
  10   unsigned long long e;
  11   __builtin_sub_overflow (0, d, &e);
  12   e >>= c;
  13   c ^= 65535;
  14   d ^= 824;
  15   return c + a + d + e;
  16 }
  17
  18 int
  19 main ()
  20 {
  21   unsigned __int128 x = b (0, 9);
  22   if (__SIZEOF_INT__ * __CHAR_BIT__ == 32
  23       && __SIZEOF_LONG_LONG__ * __CHAR_BIT__ == 64
  24       && __SIZEOF_INT128__ * __CHAR_BIT__ == 128
  25       && x != (((unsigned __int128) 1 << 64) | 0x10327))
  26     __builtin_abort ();
  27   return 0;
  28 }