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Update target_has_atomic documentation for stabilization #95384

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Mar 31, 2022
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Update target_has_atomic documentation for stabilization #95384

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7 changes: 4 additions & 3 deletions library/core/src/sync/atomic.rs
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Expand Up @@ -65,9 +65,10 @@
//! For reference, the `std` library requires `AtomicBool`s and pointer-sized atomics, although
//! `core` does not.
//!
//! Currently you'll need to use `#[cfg(target_arch)]` primarily to
//! conditionally compile in code with atomics. There is an unstable
//! `#[cfg(target_has_atomic)]` as well which may be stabilized in the future.
//! The `#[cfg(target_has_atomic)]` attribute can be used to conditionally
//! compile based on the target's supported bit widths. It is a key-value
//! option set for each supported size, with values "8", "16", "32", "64",
//! "128", and "ptr" for pointer-sized atomics.
//!
//! [lock-free]: https://en.wikipedia.org/wiki/Non-blocking_algorithm
//!
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