std::atomic Memory Order Relaxed

Which guarantee does std::memory_order_relaxed provide?

std::atomic<int> x{0}, y{0};

// Thread 1
x.store(1, std::memory_order_relaxed);
y.store(1, std::memory_order_relaxed);

// Thread 2
int r1 = y.load(std::memory_order_relaxed);
int r2 = x.load(std::memory_order_relaxed);