[Bug middle-end/116480] [15 Regression] ICE: in operand_subword_force, at emit-rtl.cc:1824 at -O2 with __builtin_stdc_has_single_bit() and _BitInt(65...128) on aarch64

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116480

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Another testcase:
```
int
foo(unsigned __int128 b)
{
  return __builtin_popcountg(b) == 1;
}

```