compiler/rustc_data_structures/src/sync.rs: remove atomics, but not AtomicU64!

Author: safinaskar

compiler/rustc_data_structures/src/sync.rs

@@ -20,11 +20,6 @@
 //! | ----------------------- | ------------------- | ------------------------------- |
 //! | `LRef<'a, T>` [^2]      | `&'a mut T`         | `&'a T`                         |
 //! |                         |                     |                                 |
-//! | `AtomicBool`            | `Cell<bool>`        | `atomic::AtomicBool`            |
-//! | `AtomicU32`             | `Cell<u32>`         | `atomic::AtomicU32`             |
-//! | `AtomicU64`             | `Cell<u64>`         | `atomic::AtomicU64`             |
-//! | `AtomicUsize`           | `Cell<usize>`       | `atomic::AtomicUsize`           |
-//! |                         |                     |                                 |
 //! | `Lock<T>`               | `RefCell<T>`        | `RefCell<T>` or                 |
 //! |                         |                     | `parking_lot::Mutex<T>`         |
 //! | `RwLock<T>`             | `RefCell<T>`        | `parking_lot::RwLock<T>`        |
@@ -107,7 +102,6 @@ pub use std::sync::OnceLock;
 // Use portable AtomicU64 for targets without native 64-bit atomics
 #[cfg(target_has_atomic = "64")]
 pub use std::sync::atomic::AtomicU64;
-pub use std::sync::atomic::{AtomicBool, AtomicU32, AtomicUsize};
 
 pub use mode::{is_dyn_thread_safe, set_dyn_thread_safe_mode};
 pub use parking_lot::{

compiler/rustc_data_structures/src/sync/freeze.rs

@@ -3,9 +3,9 @@ use std::intrinsics::likely;
 use std::marker::PhantomData;
 use std::ops::{Deref, DerefMut};
 use std::ptr::NonNull;
-use std::sync::atomic::Ordering;
+use std::sync::atomic::{AtomicBool, Ordering};
 
-use crate::sync::{AtomicBool, DynSend, DynSync, ReadGuard, RwLock, WriteGuard};
+use crate::sync::{DynSend, DynSync, ReadGuard, RwLock, WriteGuard};
 
 /// A type which allows mutation using a lock until
 /// the value is frozen and can be accessed lock-free.

compiler/rustc_query_system/src/dep_graph/graph.rs

@@ -4,14 +4,14 @@ use std::fmt::Debug;
 use std::hash::Hash;
 use std::marker::PhantomData;
 use std::sync::Arc;
-use std::sync::atomic::Ordering;
+use std::sync::atomic::{AtomicU32, Ordering};
 
 use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_data_structures::profiling::{QueryInvocationId, SelfProfilerRef};
 use rustc_data_structures::sharded::{self, Sharded};
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
-use rustc_data_structures::sync::{AtomicU32, AtomicU64, Lock};
+use rustc_data_structures::sync::{AtomicU64, Lock};
 use rustc_data_structures::unord::UnordMap;
 use rustc_index::IndexVec;
 use rustc_macros::{Decodable, Encodable};

src/doc/rustc-dev-guide/src/parallel-rustc.md

@@ -46,7 +46,6 @@ are implemented differently depending on whether `parallel-compiler` is true.
 
 | data structure                   | parallel                                            | non-parallel |
 | -------------------------------- | --------------------------------------------------- | ------------ |
-| Atomic{Bool}/{Usize}/{U32}/{U64} | std::sync::atomic::Atomic{Bool}/{Usize}/{U32}/{U64} | (std::cell::Cell<bool/usize/u32/u64>) |
 | OnceCell                         | std::sync::OnceLock                                 | std::cell::OnceCell |
 | Lock\<T> | (parking_lot::Mutex\<T>) | (std::cell::RefCell) |
 | RwLock\<T> | (parking_lot::RwLock\<T>) | (std::cell::RefCell) |