These are all standard dictionary words and don't require hyphenation.

…r=Noratrieb

Vectorized SliceContains

Godbolt for the u32 case: https://rust.godbolt.org/z/exT9xYWGs

Unsure about:
- Should align_to be used? It didn't seem to matter in my benchmark but maybe I was lucky with alignment?
- Should u8/i8 also be implemented? Currently uses memchr (SWAR)

Some benchmarks on x86 (contains called on an array with no matches, worst case may be slightly worse):

## Large N
![large_n_contains](https://github.com/user-attachments/assets/5be79072-970b-44be-a56c-16dc677dee46)

## Small N
![small_n_contains](https://github.com/user-attachments/assets/b8a33790-c176-459f-84f4-05feee893cd0)

…, r=GuillaumeGomez

rustdoc: Document `markdown` module.

Rustdoc markdown handling is currently split between:

- html::markdown, which contains all the meaty login
- markdown, which is only used for when rustdoc renders a standalone markdown file

Adds module-level doc-comment to markdown, and rename the function so it's clear that it's doing IO (instead of just rendering to a string).

…rkingjubilee

Set `signext` or `zeroext` for integer arguments on RISC-V and LoongArch64

This PR contains 3 commits:

- the first one introduces a new function `adjust_for_rust_abi` in `rustc_target`, and moves the x86 specific adjustment code into it;
- the second one adds RISC-V specific adjustment code into it, which sets `signext` or `zeroext` attribute for integer arguments.
- **UPDATE**: added the 3rd commit to apply the same adjustment for LoongArch64.

…l, r=fmease

Minor tweaks to `compare_impl_item.rs`

1. Stop using the `InstantiatedPredicates` struct for `hybrid_preds` in `compare_impl_item.rs`, since we never actually push anything into the `spans` part of it.
2. Remove redundant impl args and don't do useless identity substitution, prefer calling `instantiate_identity`.

Add a test case for rust-lang#131164

The upstream has already been fixed, but it won't be backported to LLVM 19.

r? jieyouxu or compiler

try-job: x86_64-gnu-stable

…trieb

Specialize `read_exact` and `read_buf_exact` for `VecDeque`

…r=jieyouxu

"innermost", "outermost", "leftmost", and "rightmost" don't need hyphens

These are all standard dictionary words and don't require hyphenation.

-----

Encountered an instance of this in error messages and it bugged me, so I
figured I'd fix it across the entire codebase.

Clarify documentation of `ptr::dangling()` function

Also fixes the safety comment in `NonNull::dangling()` function.

Fixes rust-lang#132004.

Fix a typo in documentation of `pointer::sub_ptr()`

Just a typo in docs.