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Rollup merge of #49170 - steveklabnik:gh49127, r=nagisa

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Clarify AcqRel's docs

This implied things that are not true.

Fixes #49127
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Tim Neumann 2018-03-26 15:14:57 +02:00 committed by GitHub
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7
src/libcore/sync/atomic.rs
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@ -205,8 +205,11 @@ pub enum Ordering {
/// [`Release`]: http://llvm.org/docs/Atomics.html#release
#[stable(feature = "rust1", since = "1.0.0")]
Acquire,
/// When coupled with a load, uses [`Acquire`] ordering, and with a store
/// [`Release`] ordering.
/// Has the effects of both [`Acquire`] and [`Release`] together.
///
/// This ordering is only applicable for operations that combine both loads and stores.
///
/// For loads it uses [`Acquire`] ordering. For stores it uses the [`Release`] ordering.
///
/// [`Acquire`]: http://llvm.org/docs/Atomics.html#acquire
/// [`Release`]: http://llvm.org/docs/Atomics.html#release