gcc/testsuite/gcc.dg/pr103808.c

   1 /* PR debug/103808 */
   2 /* { dg-do compile { target int128 } } */
   3 /* { dg-options "-fcompare-debug -O2 -ftrapv" } */
   4
   5 void
   6 foo (__int128 x, int y)
   7 {
   8   for (;;)
   9     {
  10       __int128 a, b;
  11
  12       x |= !!y;
  13       a = x + 1;
  14       b = y ? ++y : ++x;
  15       y = a < b;
  16       asm ("" : "+r" (y));
  17       if (x >> 2)
  18         y *= 2;
  19
  20       if (y == b)
  21         __builtin_unreachable ();
  22     }
  23 }