[Bug target/94046] cast to __m256d in mask argument of avx2 float gather intrinsics

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94046

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9.3+ and 10+ so far.