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Add const generics to the HIR
Split out from https://github.com/rust-lang/rust/pull/53645.
cc @yodaldevoid
r? @eddyb
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Stabilize slice_sort_by_cached_key
I was going to ask on the tracking issue (https://github.com/rust-lang/rust/issues/34447), but decided to just send this and hope for an FCP here. The method was added last March by https://github.com/rust-lang/rust/pull/48639.
Signature: https://doc.rust-lang.org/std/primitive.slice.html#method.sort_by_cached_key
```rust
impl [T] {
pub fn sort_by_cached_key<K, F>(&mut self, f: F)
where F: FnMut(&T) -> K, K: Ord;
}
```
That's an identical signature to the existing `sort_by_key`, so I think the questions are just naming, implementation, and the usual "do we want this?".
The implementation seems to have proven its use in rustc at least, which many uses: https://github.com/rust-lang/rust/search?l=Rust&q=sort_by_cached_key
(I'm asking because it's exactly what I just needed the other day:
```rust
all_positions.sort_by_cached_key(|&n|
data::CITIES.iter()
.map(|x| *metric_closure.get_edge(n, x.pos).unwrap())
.sum::<usize>()
);
```
since caching that key is a pretty obviously good idea.)
Closes #34447
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Co-Authored-By: Gabriel Smith <yodaldevoid@users.noreply.github.com>
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Convert old first edition links to current edition one
r? @steveklabnik
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Use footnote style to bypass the tidy check
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Cleanup: rename node_id_to_type(_opt)
Renames `node_id_to_type(_opt)` to `hir_id_to_type(_opt)`; this makes it clear we are dealing with HIR nodes and their IDs here.
In addition, a drive-by commit removing `ty::item_path::hir_path_str` (as requested by @eddyb).
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Cosmetic improvements to doc comments
This has been factored out from https://github.com/rust-lang/rust/pull/58036 to only include changes to documentation comments (throughout the rustc codebase).
r? @steveklabnik
Once you're happy with this, maybe we could get it through with r=1, so it doesn't constantly get invalidated? (I'm not sure this will be an issue, but just in case...) Anyway, thanks for your advice so far!
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Partially Hiridify typeck
Another step towards https://github.com/rust-lang/rust/pull/57578.
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Deduplicate mismatched delimiter errors
Delay unmatched delimiter errors until after the parser has run to deduplicate them when parsing and attempt recovering intelligently.
Second attempt at #54029, follow up to #53949. Fix #31528.
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librustc_metadata => 2018
Transitions `librustc_metadata` to Rust 2018; cc #58099
r? @Centril
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Delay unmatched delimiter errors until after the parser has run to
deduplicate them when parsing and attempt recovering intelligently.
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Remove quote_*! macros
This deletes a considerable amount of test cases, some of which we may want to keep. I'm not entirely certain what the primary intent of many of them was; if we should keep them I can attempt to edit each case to continue compiling without the quote_*! macros involved.
Fixes #46849.
Fixes #12265.
Fixes #12266.
Fixes #26994.
r? @Manishearth
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make trait-aliases work across crates
This is rebase of a small part of @alexreg's PR #55994. It focuses just on the changes that integrate trait aliases properly into crate metadata, excluding the stylistic edits and the trait objects.
The stylistic edits I also rebased and can open a separate PR.
The trait object stuff I found challenging and decided it basically needed to be reimplemented. For now I've excluded it.
Since this is really @alexreg's work (I really just rebased) I am going to make it r=me once it is working.
Fixes #56488.
Fixes #57023.
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librustc_metadata: Pass a default value when unwrapping a span
Fixes #57323.
When compiling with `static-nobundle` a-la
`rustc -l static-nobundle=nonexistent main.rs`
we now get a neat output in the form of:
```
error[E0658]: kind="static-nobundle" is feature gated (see issue #37403)
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= help: add #![feature(static_nobundle)] to the crate attributes to enable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0658`.
```
The build and tests completed successfully on my machine. Should I be adding a new test?
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Fixes #57323
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Co-authored-by: Alexander Regueiro <alexreg@me.com>
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Instead of maybe storing its own sysroot and maybe deferring to the one
in `Session::opts`, just clone the latter when necessary so one is
always directly available. This removes the need for the getter.
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Encode `TraitAlias` as if they were `Trait`
Fix #56539.
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(compiler front-ends).
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Wrap some query results in `Lrc`.
So that the frequent clones in `try_get` are cheaper.
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Because those files are quite large, contribute significantly to peak
memory usage, but only a small fraction of the data is ever read.
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So that the frequent clones in `try_get` are cheaper.
Fixes #54274.
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This commit deletes the `alloc_system` crate from the standard
distribution. This unstable crate is no longer needed in the modern
stable global allocator world, but rather its functionality is folded
directly into the standard library. The standard library was already the
only stable location to access this crate, and as a result this should
not affect any stable code.
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This commit cleans up allocator injection logic found in the compiler
around selecting the global allocator. It turns out that now that
jemalloc is gone the compiler never actually injects anything! This
means that basically everything around loading crates here and there can
be easily pruned.
This also removes the `exe_allocation_crate` option from custom target
specs as it's no longer used by the compiler anywhere.
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