Function llvmint::x86::avx512_mask_pmaddubs_w_128

pub unsafe extern "C" fn avx512_mask_pmaddubs_w_128(
    a: i8x16, 
    b: i8x16, 
    c: i16x8, 
    d: i8
) -> i16x8

The llvm.x86.avx512.mask.pmaddubs.w.128 intrinsic; known as __builtin_ia32_pmaddubsw128_mask in GCC.