[Bug tree-optimization/114041] wrong code with _BitInt() and -O -fgraphite-identity

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114041

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
unsigned a[24], b[24];

__attribute__((noipa)) unsigned
foo (unsigned char x)
{
  for (int i = 0; i < 24; ++i)
    a[i] = i;
  unsigned e = __builtin_stdc_bit_ceil (x);
  for (int i = 0; i < 24; ++i)
    b[i] = i;
  return e;
}

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

works right, but s/unsigned char/unsigned _BitInt(8)/ does not, so it must be
something in graphite that handles INTEGER_TYPE and not all integral types.