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Issues: rust-lang/rust

Draft release notes for 1.87
#140133 opened Apr 21, 2025 by BoxyUwU
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Issues list

Use a closure instead of three chained iterators perf-regression Performance regression. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140464 opened Apr 29, 2025 by oli-obk Loading…
@petrochenkov
10
mono collector: Reduce # of locking while walking the graph 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.
#140442 opened Apr 29, 2025 by osiewicz Loading…
@wesleywiser
7
Return an iterator instead of a Vec in rustdoc Item::attributes A-rustdoc-json Area: Rustdoc JSON backend perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#140441 opened Apr 29, 2025 by GuillaumeGomez Loading…
7
hir: Don't allocate for intrinsic inputs 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.
#140428 opened Apr 29, 2025 by tgross35 • Draft
6
perf: delay checking of #[rustc_no_implicit_autorefs] in autoref lint perf-regression Performance regression. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140406 opened Apr 28, 2025 by Urgau Loading…
@nnethercote
14
Match on lang item kind instead of using an if/else chain 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.
#140386 opened Apr 28, 2025 by oli-obk Loading…
@compiler-errors
21
eagerly compute sub_relations again 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. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140375 opened Apr 27, 2025 by lcnr • Draft
@compiler-errors
16
Group dep nodes by chunks with sequential indices and only store the first index at the start of the chunk A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) 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.
#140319 opened Apr 26, 2025 by Zoxc • Draft
@nnethercote
11
Use thread local dep graph encoding A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) 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.
#139758 opened Apr 13, 2025 by Zoxc Loading…
@oli-obk
17
Allow matching on 3+ variant niche-encoded enums to optimize better 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.
#139729 opened Apr 13, 2025 by scottmcm Loading…
@WaffleLapkin
17
Remove Symbol from Named variant of BoundRegionKind/LateParamRegionKind 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. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139598 opened Apr 9, 2025 by compiler-errors • Draft
8
Do not run per-module late lints if they can be all skipped 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.
#139597 opened Apr 9, 2025 by Kobzol Loading…
@BoxyUwU
14
support revealing uses of opaques in closures 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. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139587 opened Apr 9, 2025 by lcnr • Draft
@compiler-errors
28
[perf experiment] Split the resolver tables into per-owner tables 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.
#138995 opened Mar 26, 2025 by oli-obk • Draft
41
core: implement fold via try_fold perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#138835 opened Mar 22, 2025 by joboet Loading…
@the8472
7
Avoid directly accessing the hir_crate query from crate_hash 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.
#138774 opened Mar 21, 2025 by oli-obk • Draft
12
Avoid hashing the hir_crate query 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.
#138772 opened Mar 21, 2025 by oli-obk • Draft
6
Allow enum and union literals to also create SSA values 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.
#138759 opened Mar 20, 2025 by scottmcm Loading…
@workingjubilee
15
[perf] Decouple directly accessing a HIR owner from ast lowering 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.
#138705 opened Mar 19, 2025 by oli-obk • Draft
26
[do not merge] Preparation for LLD stabilization A-run-make Area: port run-make Makefiles to rmake.rs A-testsuite Area: The testsuite used to check the correctness of rustc 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-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.
#138645 opened Mar 18, 2025 by Kobzol • Draft
@lqd
37
Don't require allocas for consuming simple enums 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.
#138582 opened Mar 16, 2025 by scottmcm • Draft
@saethlin
17
shared-generics: Do not share instantiations that contain local-only types 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.
#138522 opened Mar 14, 2025 by osiewicz Loading…
@bjorn3
62
Nul terminate rust string literals 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.
#138504 opened Mar 14, 2025 by bjorn3 • Draft
@estebank
14
Test out a more lock-free hash map A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) 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.
#138419 opened Mar 12, 2025 by Zoxc • Draft
@Nadrieril
12
Tweak VecCache to improve performance 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.
#138405 opened Mar 12, 2025 by Zoxc Loading…
@Noratrieb
20
ProTip! Updated in the last three days: updated:>2025-04-27.