rustdoc: Merge source code pages HTML elements together v2
This is the follow-up of https://github.com/rust-lang/rust/pull/100429.
I strongly recommend to review it one commit at a time because otherwise it's a lot at once.
For these ones, on each page, I run this JS: `document.getElementsByTagName('*').length`. The goal is to count the number of DOM elements. I took some pages that seemed big, but don't hesitate to check some others. I also added the "starting point" because it's quite nice to see how much the page was reduced thanks to these two PRs.
| file name | before #100429 | before this PR | with this PR | diff |
|-|-|-|-|-|
| std/lib.rs.html (source link on std crate page) | 3455 | 2332 | 1772 | 24% |
| alloc/vec/mod.rs.html (source on Vec type page) | 11012 | 5982 | 5833 | 2.5% |
| alloc/string.rs.html (source on String type page) | 10800 | 6010 | 5822 | 3.2% |
| std/sync/mutex.rs.html (source on Mutex type page) | 2953 | 2041 | 2038 | 0.1% |
So unsurprisingly, the more attributes you have, the bigger the difference.
You can test it [here](https://rustdoc.crud.net/imperio/reduce-span-v2/src/std/lib.rs.html).
cc ``````@jsha``````
r? ``````@notriddle``````
some general mir typeck cleanup
this pr contains the parts of #95763 which already work correctly.
the remaining commits of that PR have some issues which are more complex to fix.
r? types
Minor syntax and formatting update to doc comment on `find_vtable_types_for_unsizing`
I noticed the code examples on this function weren't formatted as code, and also the that the syntax for trait objects was out of date (or just incorrect). This should bring it up to date.
Clamp Function for f32 and f64
I thought the clamp function could use a little improvement for readability purposes. The function now returns early in order to skip the extra bound checks.
If there was a reason for binding `self` to `x` or if this code is incorrect, please correct me :)
Deriving SessionDiagnostic on a type no longer forces that diagnostic to
be one of warning, error, or fatal. The level is instead decided when
the struct is passed to the respective Handler::emit_*() method.
Download, rather than sccache-cache, LLVM in CI
My hope/expectation is that we can do better than sccache in CI for cached builds -- currently it looks like on macOS those still take upwards of 10-11 minutes, which is a significant amount of time that we could potentially cut.
This enables this mode for all non-dist builders; this should avoid any problems with the artifacts we distribute, while also providing for faster test builders (since they'll make use of PGO'd LLVM on the platforms we do that on, which is hopefully a nice win). It slightly increases the chance of test builders starting to fail only after a PR is merged (if PGO changes runtime behavior), but that should hopefully never happen, so I think this is worthwhile.
Measurements on the PR for apple-1 don't show any noticeable improvement in CI times, but those can be pretty noisy -- I'm inclined to land this since it *should* pretty much always be better and we can reconsider if that ever turns out not to be the case.
To avoid rust-analyzer and rustc having to wait for each other,
the dev guide mentions using another build directory for RA.
We should also put this into the .gitignore, just like the normal `build`.
Refactor: remove unnecessary string searchings
This patch removes unnecessary string searchings for checking if function arguments have `&` and `&mut`.
Revert "Revert "Allow dynamic linking for iOS/tvOS targets.""
This reverts commit 16e10bf81e (PR #77716).
The original original PR enabled `cdylib` builds for iOS. However this caused problems because:
> This new feature in Rust 1.46 added a lot of headache for iOS builds with cdylib targets. cdylib target is near impossible to build if you are using any crate with native dependencies (ex. openssl, libsodium, zmq). You can't just find .so files for all architectures to perform correct linking. Usual workflow is the following:
>
> 1. You build staticlib and rely that native dependencies will be linked as frameworks later
> 2. You setup right cocoapods in ObjectiveC/Swift wrapper.
>
> As cargo doesn't support platform-dependent crate types https://github.com/rust-lang/rust/pull/4881 as a result a lot of projects now broken on Rust 1.46
However, this will be soon a thing of the past since 1.64 brings us the long awaited much anticipated `--crate-type` flag.
> I see that this got merged recently: https://github.com/rust-lang/cargo/issues/10083. The --crate-type flag will get stabilized in 1.64. In 1.64, you could still get a successful iOS staticlib with cargo build --crate-type=statclib even if the crate has cdylib targets too. If I'm not mistaken, this solves the problem too so this PR could be reverted in 1.64 with relatively little headache.
So summing up, I think this PR can be reverted in 1.64. 🤞
