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plus various minor tweaks
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Miri subtree update
r? `@ghost`
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Removing this heuristic doesn't show up as a regression in perf run
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also test on arm-64 linux hosts
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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`
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I find the `tracing-forest` output easier to comprehend.
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- Update ui.md
- Update type-alias-impl-trait.md
- Update README.md
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Do not append `--compile-time-deps` to overwritten build script commands
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`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 😅
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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`.
Fixes rust-lang/rust#124088
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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)
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Synced rust-analyzer configs
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Minor Documentation Improvements
---
## Description
- Fixed typos and improved clarity in comments and documentation.
---
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Add windows-gnullvm hosts to the manifest
I made a mistake testing https://github.com/rust-lang/rust/pull/140772 only with `rustup-toolchain-install-master` which doesn't care about the manifests.
This means windows-gnullvm self-hosting will have to wait one more release, unless this change is backported to beta and a new beta release is made, which doesn't seem worth the trouble.
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r=GuillaumeGomez
rustdoc: show attributes on enum variants
mostly for #[non_exhaustive]
unsure if there's any attributes we should take care to *not* include, it could use `render_code_attribute` and `is_non_exhaustive` instead, if that is a concern.
fixes rust-lang/rust#142599
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Skip unnecessary components in x64 try builds
We unnecessarily rebuild `wasm-component-ld`, `llvm-bitcode-linker` and Cranelift during the intermediate PGO builds several times times, which is unnecessarily and increases the duration of try builds. This PR also disables some unnecessary dist components.
r? `````@jieyouxu`````
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Insert checks for enum discriminants when debug assertions are enabled
Similar to the existing null-pointer and alignment checks, this checks for valid enum discriminants on creation of enums through unsafe transmutes. Essentially this sanitizes patterns like the following:
```rust
let val: MyEnum = unsafe { std::mem::transmute<u32, MyEnum>(42) };
```
An extension of this check will be done in a follow-up that explicitly sanitizes for extern enum values that come into Rust from e.g. C/C++.
This check is similar to Miri's capabilities of checking for valid construction of enum values.
This PR is inspired by saethlin@'s PR
https://github.com/rust-lang/rust/pull/104862. Thank you so much for keeping this code up and the detailed comments!
I also pair-programmed large parts of this together with vabr-g@.
r? `@saethlin`
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Explain where rdg changes should be submitted
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by default
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