Yuki Okushi 796bc7cae3 Rollup merge of #98383 - m-ou-se:remove-memory-order-restrictions, r=joshtriplett ... Remove restrictions on compare-exchange memory ordering. We currently don't allow the failure memory ordering of compare-exchange operations to be stronger than the success ordering, as was the case in C++11 when its memory model was copied to Rust. However, this restriction was lifted in C++17 as part of [p0418r2](https://wg21.link/p0418r2). It's time we lift the restriction too. | Success | Failure | Before | After | |---------|---------|--------|-------| | Relaxed | Relaxed | ✔️ | ✔️ | | Relaxed | Acquire | ❌ | ✔️ | | Relaxed | SeqCst | ❌ | ✔️ | | Acquire | Relaxed | ✔️ | ✔️ | | Acquire | Acquire | ✔️ | ✔️ | | Acquire | SeqCst | ❌ | ✔️ | | Release | Relaxed | ✔️ | ✔️ | | Release | Acquire | ❌ | ✔️ | | Release | SeqCst | ❌ | ✔️ | | AcqRel | Relaxed | ✔️ | ✔️ | | AcqRel | Acquire | ✔️ | ✔️ | | AcqRel | SeqCst | ❌ | ✔️ | | SeqCst | Relaxed | ✔️ | ✔️ | | SeqCst | Acquire | ✔️ | ✔️ | | SeqCst | SeqCst | ✔️ | ✔️ | | \* | Release | ❌ | ❌ | | \* | AcqRel | ❌ | ❌ | Fixes https://github.com/rust-lang/rust/issues/68464		2022-07-18 08:39:57 +09:00
..
benches	Add unicode fast path to is_printable	2022-05-31 10:51:35 +02:00
primitive_docs	Add primitive documentation to libcore	2021-09-12 02:23:08 +00:00
src	Rollup merge of #98383 - m-ou-se:remove-memory-order-restrictions, r=joshtriplett	2022-07-18 08:39:57 +09:00
tests	Rollup merge of #99306 - JohnTitor:stabilize-future-poll-fn, r=joshtriplett	2022-07-17 13:08:52 +09:00
Cargo.toml	Avoid use of rand::thread_rng in stdlib benchmarks	2022-05-02 00:08:21 -07:00