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Co-authored-by: Guillaume Gomez <guillaume1.gomez@gmail.com>
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Make def_key and HIR parenting consistent.
r? `@petrochenkov`
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2229: Handle capturing a reference into a repr packed struct
RFC 1240 states that it is unsafe to capture references into a
packed-struct. This PR ensures that when a closure captures a precise
path, we aren't violating this safety constraint.
To acheive so we restrict the capture precision to the struct itself.
An interesting edge case where we decided to restrict precision:
```rust
struct Foo(String);
let foo: Foo;
let c = || {
println!("{}", foo.0);
let x = foo.0;
}
```
Given how closures get desugared today, foo.0 will be moved into the
closure, making the `println!`, safe. However this can be very subtle
and also will be unsafe if the closure gets inline.
Closes: https://github.com/rust-lang/project-rfc-2229/issues/33
r? `@nikomatsakis`
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Basically, it doesn't make sense to generate those things every time
you search. That generates a bunch of stuff for the GC to clean up,
when, if the user wanted to do another search, it would just need
to re-do it again.
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Every time splice() is called, another temporary object is created.
This version, which uses plain objects as a sort of Hash Bag,
should only produce one temporary object each time it's called.
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There is no reason for this function to return an object,
since it is always used for getting at the name anyhow.
It's used in the inner loop for some popular functions,
so we want to avoid allocating in it.
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Allow calling *const methods on *mut values
This allows `*const` methods to be called on `*mut` values.
TODOs:
- [x] ~~Remove debug logs~~ Done.
- [x] ~~I haven't tested, but I think this currently won't work when the `self` value has type like `&&&&& *mut X` because I don't do any autoderefs when probing. To fix this the new code in `rustc_typeck::check::method::probe` needs to reuse `pick_method` somehow as I think that's the function that autoderefs.~~ This works, because autoderefs are done before calling `pick_core`, in `method_autoderef_steps`, called by `probe_op`.
- [x] ~~I should probably move the new `Pick` to `pick_autorefd_method`. If not, I should move it to its own function.~~ Done.
- [ ] ~~Test this with a `Pick` with `to_ptr = true` and `unsize = true`.~~ I think this case cannot happen, because we don't have any array methods with `*mut [X]` receiver. I should confirm that this is true and document this. I've placed two assertions about this.
- [x] ~~Maybe give `(Mutability, bool)` a name and fields~~ I now have a `to_const_ptr` field in `Pick`.
- [x] ~~Changes in `adjust_self_ty` is quite hacky. The problem is we can't deref a pointer, and even if we don't have an adjustment to get the address of a value, so to go from `*mut` to `*const` we need a special case.~~ There's still a special case for `to_const_ptr`, but I'm not sure if we can avoid this.
- [ ] Figure out how `reached_raw_pointer` stuff is used. I suspect only for error messages.
Fixes #80258
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r=Mark-Simulacrum
Allow configuring `rustdoc --disable-minification` in config.toml
This way, you can debug rustdoc's JavaScript and CSS file with normal F12 Dev Tools and you'll have useful line numbers to work with.
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Emit the enum range assumption if the range only contains one element
close https://github.com/rust-lang/rust/issues/82871
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Update Clippy
Bi-weekly Clippy sync.
r? ``@Manishearth``
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This way, you can debug rustdoc's JavaScript and CSS file
with normal F12 Dev Tools and you'll have useful line numbers
to work with.
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Update RLS
Fixes #82932
r? `@ghost`
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This will be removed in the next sync, once beta is at 1.52. Until then
this hack avoids to put `cfg(bootstrap)` into Clippy.
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Update llvm-project submodule
Fixes #82833. Fixes #82859. Probably also `fixes` #83025. This also merges in the current upstream 12.x branch.
r? `@nagisa`
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Diagnostic cleanups
Follow up to #81503
Helps with #82916 (don't show note if `span` is `DUMMY_SP`)
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Fixes #83048
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test: add test case
make tidy happy
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This patch avoids undefined behavior by linking different object files.
Also this would it could be propagated properly to LTO.
See https://reviews.llvm.org/D52322 and https://reviews.llvm.org/D52323.
This patch is based on https://github.com/rust-lang/rust/pull/74002
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rustdoc: tweak the search index format
This essentially switches search-index.js from a "array of struct" to a "struct of array" format, like this:
{
"doc": "Crate documentation",
"t": [ 1, 1, 2, 3, ... ],
"n": [ "Something", "SomethingElse", "whatever", "do_stuff", ... ],
"q": [ "a::b", "", "", "", ... ],
"d": [ "A Struct That Does Something", "Another Struct", "a function", "another function", ... ],
"i": [ 0, 0, 1, 1, ... ],
"f": [ null, null, [], [], ... ],
"p": ...,
"a": ...
}
So `{ty: 1, name: "Something", path: "a::b", desc: "A Struct That Does Something", parent_idx: 0, search_type: null}` is the first item.
This makes the uncompressed version smaller, but it really shows on the compressed version:
notriddle:rust$ wc -c new-search-index1.52.0.js
2622427 new-search-index1.52.0.js
notriddle:rust$ wc -c old-search-index1.52.0.js
2725046 old-search-index1.52.0.js
notriddle:rust$ gzip new-search-index1.52.0.js
notriddle:rust$ gzip old-search-index1.52.0.js
notriddle:rust$ wc -c new-search-index1.52.0.js.gz
239385 new-search-index1.52.0.js.gz
notriddle:rust$ wc -c old-search-index1.52.0.js.gz
296328 old-search-index1.52.0.js.gz
That's a 4% improvement on the uncompressed version (fewer `[]`, and also changing `null` to `0` in the parent_idx list), and 20% improvement after gzipping it, thanks to putting like-typed data next to each other. Any compression algorithm based on a sliding window will probably show this kind of improvement.
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Fix "run" button position in error index
This isn't really a rustdoc issue but I still made the same fix in the `rustdoc.css` file (doesn't hurt).
Before:
After:
cc ````@jyn514```` (considering this is quite a big bug and an easy fix)
r? ````@Nemo157````
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Add spirv extension handling in compiletest
We're trying to use `compiletest` for Rust-GPU's testsuite, and ran into an issue with host specific extensions. This adds handling to fix that.
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convert slice doc link to intra-doc links
Continuing where #80189 stopped, with `core::slice`.
I had an issue with two dead links in my doc when implementing `Deref<Target = [T]>` for one of my type. This means that [`binary_search_by_key`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.binary_search_by_key) was available, but not [`sort_by_key`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_by_key) even though it was linked in it's doc (same issue with [`as_ptr`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_ptr) and [`as_mut_pbr`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.as_mut_ptr)). It becomes available if I implement `DerefMut`, as it needs an `&mut self`.
<details>
<summary>Code that will have dead links in its doc</summary>
```rust
pub struct A;
pub struct B;
impl std::ops::Deref for B{
type Target = [A];
fn deref(&self) -> &Self::Target {
&A
}
}
```
</details>
I removed the link to `sort_by_key` from `binary_search_by_key` doc as I didn't find a nice way to have a live link:
- `binary_search_by_key` is in `core`
- `sort_by_key` is in `alloc`
- intra-doc link `slice::sort_by_key` doesn't work, as `alloc` is not available when `core` is being build (the warning can't be ignored: ```error[E0710]: an unknown tool name found in scoped lint: `rustdoc::broken_intra_doc_links` ```)
- keeping the link as an anchor `#method.sort_by_key` meant a dead link
- an absolute link would work but doesn't feel right...
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Rustdoc Json: Add tests for Reexports, and improve jsondocck
The two changes are orthognal, so you can land just one if you want, but the improved errors realy helped write the tests.
Notably does not have the case from #80664, but I want to have all the ajacent cases tested before starting work on that to ensure I dont break anything.
Improves #81359
cc ```@CraftSpider```
r? ```@jyn514```
```@rustbot``` modify labels: +A-testsuite +T-rustdoc +A-rustdoc-json
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collecting iterators
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Enable MemorySSA in MemCpyOpt
LLVM 12 ships with an implementation of MemCpyOpt which is based on MSSA instead of MDA. This implementation can eliminate memcpys across blocks, and as such fixes many (but not all) failures to eliminate redundant memcpys for Rust code. Unfortunately this was only enabled by default shortly after LLVM 12 was cut. This backports the enablement to our LLVM fork.
Perf results: https://perf.rust-lang.org/compare.html?start=8fd946c63a6c3aae9788bd459d278cb2efa77099&end=0628b91ce17035fb5b6a1a99a4f2ab9ab69be7a8
There are improvements on check and debug builds, which indicate that rustc itself has become faster. For opt builds this is, on average, a very minor improvement as well, although there is one significant outlier with deep-vector-opt. This benchmark creates ~140000 zero stores, which are now coalesced into a memset slightly later, resulting in longer compile-time for intermediate passes.
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This updates the LLVM submodule to pick up a backported patch
to enable MemorySSA-based MemCpyOpt, which is capable of optimizing
away memcpy's across basic blocks.
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bump Miri
Fixes https://github.com/rust-lang/rust/issues/82961
Cc `@rust-lang/miri` r? `@ghost`
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Fix nojs style issues
There are two issues fixed here:
1. The position of "{version}" and "[src]" spans.
2. The position of attributes (on top of functions)
Please note that these issues only happen if you have disabled javascript.
Before:
After:
In the last commit, I added a test to enforce the attributes position. I need to think how to enforce it for the spans but that can comes later on.
r? `@Nemo157`
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