[Bug target/98648] Failure to optimize out no-op vector operation using andnot

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98648

--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
Fixed by r12-6071-g19dcecd963295b02b96c8cac57933657dbe3234a