missed auto vectorization

[Disservin]

The following code doesn't get auto vectorized on clang trunk when compiled with
-O3 -march=znver4

struct BitBoard
{
    alignas(64) std::uint64_t chunks[4];

    BitBoard& operator&=(const BitBoard& other);
};

BitBoard& BitBoard::operator&=(const BitBoard& other)
{
    chunks[0] &= other.chunks[0];
    chunks[1] &= other.chunks[1];
    chunks[2] &= other.chunks[2];
    chunks[3] &= other.chunks[3];

    return *this;
}

resulting in

BitBoard::operator&=(BitBoard const&):
        mov     rcx, qword ptr [rsi]
        mov     rax, rdi
        and     qword ptr [rdi], rcx
        mov     rcx, qword ptr [rsi + 8]
        and     qword ptr [rdi + 8], rcx
        mov     rcx, qword ptr [rsi + 16]
        and     qword ptr [rdi + 16], rcx
        mov     rcx, qword ptr [rsi + 24]
        and     qword ptr [rdi + 24], rcx
        ret

GCC performs such auto vectorization

see:
https://godbolt.org/z/8rKccboe1

same for arm
https://godbolt.org/z/9rT66P4hx