[Bug middle-end/127921] Signed large _BitInt rotate is lowered with an arithmetic right shift

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127921

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
This does not show up normally since __builtin_stdc_rotate_left only handles
unsigned types.