core: unstably expose atomic_compare_exchange so stdarch can use it #141687
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
rustbot
added
S-waiting-on-review
bjorn3
reviewed
May 28, 2025
RalfJung
force-pushed
the
atomic_compare_exchange
branch
from
ccf9675 to
2593df8
Compare
|
@bors r+ rollup=always |
bors
added
S-waiting-on-bors
bors
added a commit
that referenced
this pull request
May 29, 2025
Rollup of 16 pull requests Successful merges: - #136429 (GCI: At their def site, actually wfcheck the where-clause & always eval free lifetime-generic constants) - #138139 (Emit warning while outputs is not exe and prints linkage info) - #141104 (Test(fs): Fix `test_eq_windows_file_type` for Windows 7) - #141477 (Path::with_extension: show that it adds an extension where one did no…) - #141533 (clean up old rintf leftovers) - #141612 (Call out possibility of invariant result in variance markers) - #141638 (Use `builtin_index` instead of hand-rolling it) - #141643 (ci: verify that codebuild jobs use ghcr.io) - #141675 (Reorder `ast::ItemKind::{Struct,Enum,Union}` fields.) - #141680 (replace TraitRef link memory.md) - #141682 (interpret/allocation: Fixup type for `alloc_bytes`) - #141683 (Handle ed2021 precise capturing of unsafe binder) - #141684 (rustbook: Bump versions of `onig` and `onig_sys`) - #141687 (core: unstably expose atomic_compare_exchange so stdarch can use it) - #141690 (Add `rustc_diagnostic_item` to `sys::Mutex` methods) - #141702 (Add eholk to compiler reviewer rotation) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer
added a commit
that referenced
this pull request
May 29, 2025
Rollup merge of #141687 - RalfJung:atomic_compare_exchange, r=bjorn3 core: unstably expose atomic_compare_exchange so stdarch can use it Due to rust-lang/stdarch#1655, cleaning up the atomic intrinsics will be a bunch of extra work: stdarch directly calls them [here](https://github.com/rust-lang/stdarch/blob/8764244589373b8b48864c0ad11fd9233c672249/crates/core_arch/src/x86_64/cmpxchg16b.rs#L58-L74). Instead of duplicating that match, stdarch should use what we have in libcore, so let's expose that. r? `@bjorn3`
github-actions bot
pushed a commit
to model-checking/verify-rust-std
that referenced
this pull request
May 30, 2025
…r=bjorn3 core: unstably expose atomic_compare_exchange so stdarch can use it Due to rust-lang/stdarch#1655, cleaning up the atomic intrinsics will be a bunch of extra work: stdarch directly calls them [here](https://github.com/rust-lang/stdarch/blob/8764244589373b8b48864c0ad11fd9233c672249/crates/core_arch/src/x86_64/cmpxchg16b.rs#L58-L74). Instead of duplicating that match, stdarch should use what we have in libcore, so let's expose that. r? `@bjorn3`
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Due to rust-lang/stdarch#1655, cleaning up the atomic intrinsics will be a bunch of extra work: stdarch directly calls them here.
Instead of duplicating that match, stdarch should use what we have in libcore, so let's expose that.
r? @bjorn3