Function llvmint::x86::avx512_mask_lzcnt_d_512

pub unsafe extern "C" fn avx512_mask_lzcnt_d_512(
    a: i32x16, 
    b: i32x16, 
    c: i16
) -> i32x16

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