[Bug tree-optimization/119707] wrong code with _BitInt() mask and shift at -O1

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119707

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Further simplified
__attribute__((noipa)) unsigned _BitInt(256)
foo (unsigned _BitInt(256) x, _BitInt(129) y)
{
  return x - (unsigned _BitInt(255)) y;
}

int
main ()
{
  if (foo (0, -1) !=
0x8000000000000000000000000000000000000000000000000000000000000001uwb)
    __builtin_abort ();
}