Documentation: Relaxed Memory Ordering maybe wrong statement?

[sainteckes]

In the section about Relaxed Memory Ordering in the docs it is stated, that B can run before A.

loom/src/lib.rs

Line 294 in 31dfebd

//! ## Relaxed Memory Ordering

thread::spawn(move || {
  let r1 = y.load(Ordering::Relaxed); // A
  x.store(r1, Ordering::Relaxed);     // B
});
thread::spawn(move || {
  let r2 = x.load(Ordering::Relaxed); // C
  y.store(42, Ordering::Relaxed);     // D
});

How should the compiler be able to move B in front of A, if r1 is not existing at this time?
I guess you meant that D can run before C, what makes perfect sense, because D has no connection to C that is visible for the compiler.

I am quite new to understanding this stuff, so happy if you correct me :)

[sainteckes]

Okay, theoretically r1 could exist because of shadowing, but this is not the point that should be done here no? :D