https://github.com/rust-lang/rust http://git.dreamy.place/mirrors/rust/atom?h=try-perf 2025-10-02T08:09:33+00:00 2025-10-02T08:09:33+00:00 bors bors@rust-lang.org 2025-10-02T08:09:33+00:00 urn:sha1:4b9c62b4da3e17cee99d3d2052f1c576b188e2a8 Split Bound index into Canonical and Bound See [#t-types/trait-system-refactor > perf `async-closures/post-mono-higher-ranked-hang.rs`](https://rust-lang.zulipchat.com/#narrow/channel/364551-t-types.2Ftrait-system-refactor/topic/perf.20.60async-closures.2Fpost-mono-higher-ranked-hang.2Ers.60/with/541535613) for context Things compile and tests pass, but not sure if this actually solves the perf issue (edit: it does). Opening up this to do a perf (and maybe crater) run. r? lcnr 2025-10-02T01:54:48+00:00 bors bors@rust-lang.org 2025-10-02T01:54:48+00:00 urn:sha1:42b384ec0dfcd528d99a4db0a337d9188a9eecaa Turn ProjectionElem::Subtype into CastKind::Subtype I noticed that drop elaboration can't, in general, handle `ProjectionElem::SubType`. It creates a disjoint move path that overlaps with other move paths. (`Subslice` does too, and I'm working on a different PR to make that special case less fragile.) If its skipped and treated as the same move path as its parent then `MovePath.place` has multiple possible projections. (It would probably make sense to remove all `Subtype` projections for the canonical place but it doesn't make sense to have this special case for a problem that doesn't actually occur in real MIR.) The only reason this doesn't break is that `Subtype` is always the sole projection of the local its applied to. For the same reason, it works fine as a `CastKind` so I figured that makes more sense than documenting and validating this hidden invariant. cc rust-lang/rust#112651, rust-lang/rust#133258 r? Icnr (bc you've been the main person dealing with `Subtype` it looks like) 2025-09-30T16:58:28+00:00 jackh726 git@jackhuey.me 2025-09-28T23:04:55+00:00 urn:sha1:d1bbd39c59523d7a5499816a9da200a5910f8b7f 2025-09-28T22:02:14+00:00 Jubilee Young workingjubilee@gmail.com 2025-09-28T21:40:39+00:00 urn:sha1:0c9d0dfe046f0674f0507df564504ac3bac862d9 Much of the compiler calls functions on Align projected from AbiAlign. AbiAlign impls Deref to its inner Align, so we can simplify these away. Also, it will minimize disruption when AbiAlign is removed. For now, preserve usages that might resolve to PartialOrd or PartialEq, as those have odd inference. 2025-09-27T03:50:03+00:00 bors bors@rust-lang.org 2025-09-27T03:50:03+00:00 urn:sha1:959b450747f81e720be3a829665dd30e553e7fd7 Bump bootstrap compiler to 1.91 beta https://forge.rust-lang.org/release/process.html#default-branch-bootstrap-update-tuesday 2025-09-26T23:09:23+00:00 Mark Rousskov mark.simulacrum@gmail.com 2025-09-16T02:01:36+00:00 urn:sha1:201f299ef6039886042ad8dd7c76a4fbd1a77a3f 2025-09-26T19:19:25+00:00 beepster4096 19316085+beepster4096@users.noreply.github.com 2025-09-26T19:17:06+00:00 urn:sha1:b550688258ddc29618ebd2fa0b6b4a518f12c0e4 2025-09-26T16:11:08+00:00 Matthias Krüger 476013+matthiaskrgr@users.noreply.github.com 2025-09-26T16:11:08+00:00 urn:sha1:f104ae4252b1f508e5b4a8193954ab518091b2c0 resolve: Do not finalize shadowed bindings I.e. do not mark them as used, or non-speculatively loaded, or similar. Previously they were sometimes finalized during early resolution, causing issues like https://github.com/rust-lang/rust/pull/144793#issuecomment-3168108005. 2025-09-26T04:34:09+00:00 bors bors@rust-lang.org 2025-09-26T04:34:09+00:00 urn:sha1:40ace17fc3891155bad26a50d60a9ab07b83bf8e Extended temporary argument to format_args!() in all cases Fixes https://github.com/rust-lang/rust/issues/145880 by removing the special case. 2025-09-25T17:36:14+00:00 Vadim Petrochenkov vadim.petrochenkov@gmail.com 2025-08-01T18:55:11+00:00 urn:sha1:f89660e4aa018401ca993f0df190e5f4c4a6799b I.e. do not mark them as used, or non-speculative loaded, or similar. Previously they were sometimes finalized during early resolution, causing issues like https://github.com/rust-lang/rust/pull/144793#issuecomment-3168108005.