[Bug target/88035] missing _mm512_reduce_round_pd() et al

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88035

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I must say I don't understand the #c1 comment, GCC
__builtin_ia32_reducepd512_mask etc. don't take the rounding mode argument at
all.  And not only the _mm_*reduce_round* intrinsics are missing,
_mm512_*reduce_round* is missing too.