Rollup of 4 pull requests
Successful merges:
- rust-lang/rust#142078 (Add SIMD funnel shift and round-to-even intrinsics)
- rust-lang/rust#142214 (`tests/ui`: A New Order [9/N])
- rust-lang/rust#142417 (`tests/ui`: A New Order [12/N])
- rust-lang/rust#143030 (Fix suggestion spans inside macros for the `unused_must_use` lint)
r? `@ghost`
`@rustbot` modify labels: rollup
Fix suggestion spans inside macros for the `unused_must_use` lint
This PR fixes the suggestion spans inside macros for the `unused_must_use` lint by trying to find the oldest ancestor span.
Fixes https://github.com/rust-lang/rust/issues/143025
`tests/ui`: A New Order [12/N]
Some `tests/ui/` housekeeping, to trim down number of tests directly under `tests/ui/`. Part of rust-lang/rust#133895.
r? `@jieyouxu`
Add SIMD funnel shift and round-to-even intrinsics
This PR adds 3 new SIMD intrinsics
- `simd_funnel_shl` - funnel shift left
- `simd_funnel_shr` - funnel shift right
- `simd_round_ties_even` (vector version of `round_ties_even_fN`)
TODO (future PR): implement `simd_fsh{l,r}` in miri, cg_gcc and cg_clif (it is surprisingly hard to implement without branches, the common tricks that rotate uses doesn't work because we have 2 elements now. e.g, the `-n&31` trick used by cg_gcc to implement rotate doesn't work with this because then `fshl(a, b, 0)` will be `a | b`)
[#t-compiler > More SIMD intrinsics](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/More.20SIMD.20intrinsics/with/522130286)
`@rustbot` label T-compiler T-libs A-intrinsics F-core_intrinsics
r? `@workingjubilee`
Remove unused feature gates
After finding some unused feature gates in rust-lang/rust#143155 , I wrote a small script to see if I can find any others.
And I did. Not a lot, but still a small win 😁
Contains a few instances of `iter_from_coroutine` that can be removed due to rust-lang/rust#142801 (I guess).
`librustdoc` house-keeping 🧹
This PR mostly removes a bunch of crate-level attributes that were added at some point, but then later on became unnecessary:
- some `#[feature]` gates
- some `#[allow]`s
- a `#[recursion_limit]`
Then I went ahead and sprinkled some tidy sorting on the remaining attrs, and `Cargo.toml`.
Trying to give my anal retentiveness some peace of mind 😅
Improve documentation of `TagEncoding`
This PR is follow-up from the [discussion here](https://rust-lang.zulipchat.com/#narrow/channel/182449-t-compiler.2Fhelp/topic/.E2.9C.94.20VariantId.3DDiscriminant.20when.20tag.20is.20niche.20encoded.3F/with/524384295).
It aims at making the `TagEncoding` documentation less ambiguous and more detailed with references to relevant implementation sides. It especially clears up the ambiguous use of discriminant/variant index, which sparked the discussion referenced above.
PS: While working with layout data, I somehow ended up looking at the docs for `FakeBorrowKind` and noticed that the one example was not in a doc comment. I hope that this is minor enough of a fix for it to be okay in this otherwise unrelated PR.
Add regression test for #137857 to ensure that we generate intra doc links for extern crate items.
Fixes https://github.com/rust-lang/rust/issues/137857.
I checked that linking to extern crates was generating valid links (with the `/index.html` part) and since it's already working, just adding a regression test.
r? `@notriddle`
Doc: clarify priority of lint level sources
This updates the rustc book to clearly document how conflicting lint configurations are resolved across different sources, including command-line flags, crate-level attributes, in-line attributes, and `--cap-lints`.
It also explains the special behavior of `forbid` and `force_warn`.
Fixesrust-lang/rust#124088
Update cargo
7 commits in 409fed7dc1553d49cb9a8c0637d12d65571346ce..930b4f62cfcd1f0eabdb30a56d91bf6844b739bf
2025-06-23 15:55:04 +0000 to 2025-06-28 14:58:43 +0000
- Use a different lint for the `fix_only_once_for_duplicates` test (rust-lang/cargo#15713)
- chore: bump to 0.91.0; update changelog (rust-lang/cargo#15710)
- Add `http.proxy-cainfo` config for proxy certs (rust-lang/cargo#15374)
- chore(deps): update msrv (3 versions) to v1.86 (rust-lang/cargo#15709)
- chore(deps): update msrv (1 version) to v1.88 (rust-lang/cargo#15706)
- Rework `cargo-test-support` & `testsuite` to use `CARGO_BIN_EXE_*` for Cargo (rust-lang/cargo#15692)
- fix: Expand error messages around path dependency on `cargo package` and `cargo publish` (rust-lang/cargo#15705)
