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104 Open 2,328 Closed
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Issues list

Provide slice length information to the compiler 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.
#141068 opened May 16, 2025 by TDecking Loading…
@Mark-Simulacrum
10
Don't do expensive HIR walk to collect nested bodies perf-regression Performance regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141057 opened May 15, 2025 by compiler-errors • Draft
9
move expensive layout sanity check to debug assertions 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.
#141039 opened May 15, 2025 by lqd Loading…
@compiler-errors
18
[WIP] Expand free alias types during variance computation F-lazy_type_alias `#![feature(lazy_type_alias)]` perf-regression Performance regression. rla-silenced Silences rust-log-analyzer postings to the PR it's added on. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-types Relevant to the types team, which will review and decide on the PR/issue.
#141030 opened May 15, 2025 by fmease • Draft
1
6
rustdoc: Also run lint unused_doc_comments 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-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#141000 opened May 14, 2025 by fmease • Draft
@notriddle
9
Use Arena::alloc_from_iter to avoid redundant vec allocations 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.
#140937 opened May 12, 2025 by yotamofek Loading…
@fee1-dead
13
[PERF] 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)
#140752 opened May 7, 2025 by lcnr Loading…
7
Allow storing format_args!() in variable A-fmt Area: `core::fmt` needs-fcp This change is insta-stable, so needs a completed FCP to proceed. perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-lang Relevant to the language team, which will review and decide on the PR/issue. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#140748 opened May 7, 2025 by m-ou-se • Draft
1
8
name resolution for guard patterns 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.
#140746 opened May 7, 2025 by dianne Loading…
@oli-obk
10
Simplify expansion of panic!(). 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-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.
#140637 opened May 4, 2025 by m-ou-se • Draft
@m-ou-se
6
Less Instance::new_raw 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.
#140518 opened Apr 30, 2025 by compiler-errors • Draft
7
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-author Status: This is awaiting some action (such as code changes or more information) from the author. S-waiting-on-perf Status: Waiting on a perf run to be completed. 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
35
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
12
[crater] Only consider predicate non-global if binder vars are in PREDICATE binder 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.
#140209 opened Apr 23, 2025 by compiler-errors • Draft
@lcnr
43
Allow matching on 3+ variant niche-encoded enums to optimize better 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.
#139729 opened Apr 13, 2025 by scottmcm Loading…
@WaffleLapkin
19
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
9
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 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
67
[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
18
[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
ProTip! What’s not been updated in a month: updated:<2025-04-17.