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Pull requests list

Remove support for prefix yield PG-exploit-mitigations Project group: Exploit mitigations S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. T-rustfmt Relevant to the rustfmt team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#148313 opened Oct 31, 2025 by eholk • Draft
7 😕 2
[experimental, do not merge!] a faster implementation of Polonius and a more compact DenseBitSet implementation A-compiletest Area: The compiletest test runner A-testsuite Area: The testsuite used to check the correctness of rustc perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141583 opened May 26, 2025 by tage64 • Draft
12
[DO NOT MERGE] build Enzyme as archive A-testsuite Area: The testsuite used to check the correctness of rustc F-autodiff `#![feature(autodiff)]` perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue.
#140799 opened May 8, 2025 by ZuseZ4 Loading…
21
compiler: Stop manually extending the stack A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#134153 opened Dec 10, 2024 by workingjubilee • Draft
11
Swap Lru from std::sync::Arc to triomphe::Arc A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) A-testsuite Area: The testsuite used to check the correctness of rustc perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#131629 opened Oct 12, 2024 by GnomedDev • Draft
8
turn creating 8dot3 names off for windows for speed A-testsuite Area: The testsuite used to check the correctness of rustc S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue.
#133033 opened Nov 14, 2024 by klensy Loading…
92
Lazy-chunk Symbol interner perf-regression Performance regression. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136401 opened Feb 1, 2025 by Mark-Simulacrum • Draft
45
Use multiple returns in MIR if it saves a block; still have only one in LLVM perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138144 opened Mar 7, 2025 by scottmcm • Draft
6
[perf] Fast path for coercions of TY == TY T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#142973 opened Jun 24, 2025 by compiler-errors • Draft
18
Check for occupied niches perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#121174 opened Feb 16, 2024 by saethlin • Draft
34
[experiment] dont init anything except x86 perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136861 opened Feb 11, 2025 by klensy Loading…
9
MIR: Stop needing an explicit BB for otherwise:unreachable perf-regression Performance regression. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124188 opened Apr 20, 2024 by scottmcm • Draft
18
[do not merge] CI experiments A-CI Area: Our Github Actions CI A-compiletest Area: The compiletest test runner A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-meta Area: Issues & PRs about the rust-lang/rust repository itself A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) A-testsuite Area: The testsuite used to check the correctness of rustc A-tidy Area: The tidy tool A-translation Area: Translation infrastructure, and migrating existing diagnostics to SessionDiagnostic S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#112049 opened May 28, 2023 by Kobzol • Draft
1861
[perf] test MCP510 A-compiletest Area: The compiletest test runner A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) A-rustdoc-json Area: Rustdoc JSON backend A-testsuite Area: The testsuite used to check the correctness of rustc A-tidy Area: The tidy tool S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue.
#113382 opened Jul 5, 2023 by lqd • Draft
475
Dummy PR to test coverage test changes in CI A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-run-make Area: port run-make Makefiles to rmake.rs A-testsuite Area: The testsuite used to check the correctness of rustc S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue.
#114917 opened Aug 17, 2023 by Zalathar • Draft
81
Split marking and visit to compute live_symbols. perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#114538 opened Aug 6, 2023 by cjgillot • Draft
12
[DO NOT MERGE] Experimentally force non-leaf frame pointers perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#115521 opened Sep 3, 2023 by workingjubilee Loading…
22
rust-analyzer subtree update S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-rust-analyzer Relevant to the rust-analyzer team, which will review and decide on the PR/issue.
#149057 opened Nov 18, 2025 by lnicola Loading…
5
Don't check GAT bounds in normalization S-blocked Status: Blocked on something else such as an RFC or other implementation work. T-types Relevant to the types team, which will review and decide on the PR/issue.
#117682 opened Nov 7, 2023 by aliemjay • Draft
5
[perf only] Reimplement references debuginfo as projection. A-mir-opt Area: MIR optimizations perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#119471 opened Dec 31, 2023 by cjgillot • Draft
16
Implement RFC 3349, mixed utf8 literals A-testsuite Area: The testsuite used to check the correctness of rustc perf-regression Performance regression. perf-regression-triaged The performance regression has been triaged. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-lang Relevant to the language team
#120286 opened Jan 23, 2024 by nnethercote • Draft
16
Enable MultipleReturnTerminators by default. A-mir-opt Area: MIR optimizations perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#120179 opened Jan 21, 2024 by cjgillot • Draft
7
[WIP] rewrite TrustedRandomAccess into two directional variants perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#120682 opened Feb 5, 2024 by the8472 • Draft
53
Expand assumes to the other unchecked slice ops perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#120762 opened Feb 8, 2024 by saethlin • Draft
40
coverage: Don't show coverage for code paths that must panic/diverge A-code-coverage Area: Source-based code coverage (-Cinstrument-coverage) S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#120013 opened Jan 16, 2024 by Zalathar • Draft
14
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