[Bug c/98479] Missed optimization opportunity for unsigned __int128 modulo

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98479

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11 will calculate this since PR97459 as
        uint64_t r = (uint64_t) n & 0xfffffffffffffff;
        r += (uint64_t) (n >> 60) & 0xfffffffffffffff;
        r += (uint64_t) (n >> 120);
        return r % 9;
instead as 2^60 == 1 (mod 9).