Function llvmint::x86::avx512_mask_lzcnt_q_512

pub unsafe extern "C" fn avx512_mask_lzcnt_q_512(
    a: i64x8, 
    b: i64x8, 
    c: i8
) -> i64x8

The llvm.x86.avx512.mask.lzcnt.q.512 intrinsic.