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Rollup of 21 pull requests
Successful merges:
- rust-lang/rust#118087 (Add Ref/RefMut try_map method)
- rust-lang/rust#122661 (Change the desugaring of `assert!` for better error output)
- rust-lang/rust#142640 (Implement autodiff using intrinsics)
- rust-lang/rust#143075 (compiler: Allow `extern "interrupt" fn() -> !`)
- rust-lang/rust#144865 (Fix tail calls to `#[track_caller]` functions)
- rust-lang/rust#144944 (E0793: Clarify that it applies to unions as well)
- rust-lang/rust#144947 (Fix description of unsigned `checked_exact_div`)
- rust-lang/rust#145004 (Couple of minor cleanups)
- rust-lang/rust#145005 (strip prefix of temporary file names when it exceeds filesystem name length limit)
- rust-lang/rust#145012 (Tail call diagnostics to include lifetime info)
- rust-lang/rust#145065 (resolve: Introduce `RibKind::Block`)
- rust-lang/rust#145120 (llvm: Accept new LLVM lifetime format)
- rust-lang/rust#145189 (Weekly `cargo update`)
- rust-lang/rust#145235 (Minor `[const]` tweaks)
- rust-lang/rust#145275 (fix(compiler/rustc_codegen_llvm): apply `target-cpu` attribute)
- rust-lang/rust#145322 (Resolve the prelude import in `build_reduced_graph`)
- rust-lang/rust#145331 (Make std use the edition 2024 prelude)
- rust-lang/rust#145369 (Do not ICE on private type in field of unresolved struct)
- rust-lang/rust#145378 (Add `FnContext` in parser for diagnostic)
- rust-lang/rust#145389 ([rustdoc] Revert "rustdoc search: prefer stable items in search results")
- rust-lang/rust#145392 (coverage: Remove intermediate data structures from mapping creation)
r? `@ghost`
`@rustbot` modify labels: rollup
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coverage: Remove intermediate data structures from mapping creation
The data structures in `coverage::mappings` were historically very useful for isolating the details of mapping-extraction from the details of how coverage mappings are stored in MIR.
But because of various changes that have taken place over time, they now provide little value, and cause difficulty for the coordinated changes that will be needed for introducing expansion mapping support.
In the future, the pendulum might eventually swing back towards these being useful again, but we can always reintroduce suitable intermediate data structures if and when that happens. For now, the simplicity of not having this intermediate layer is a higher priority.
There should be no changes to compiler output.
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Add `FnContext` in parser for diagnostic
Fixes rust-lang/rust#144968
Inspired by https://github.com/rust-lang/rust/issues/144968#issuecomment-3156094581, I implemented `FnContext` to indicate whether a function should have a self parameter, for example, whether the function is a trait method, whether it is in an impl block. And I removed the outdated note.
I made two commits to show the difference.
cc ``@estebank`` ``@djc``
r? compiler
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Do not ICE on private type in field of unresolved struct
Fix rust-lang/rust#145367.
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r=petrochenkov
Resolve the prelude import in `build_reduced_graph`
This pr tries to resolve the prelude import at the `build_reduced_graph` stage.
Part of batched import resolution in rust-lang/rust#145108 (cherry picked commit) and maybe needed for rust-lang/rust#139493.
r? petrochenkov
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r=alexcrichton
fix(compiler/rustc_codegen_llvm): apply `target-cpu` attribute
Resolves rust-lang/rust#140174
r? ```@alexcrichton```
try-job: `test-various*`
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Minor `[const]` tweaks
Self explanatory
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llvm: Accept new LLVM lifetime format
In llvm/llvm-project#150248 LLVM removed the size parameter from the lifetime format. Tolerate not having that size parameter.
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resolve: Introduce `RibKind::Block`
to avoid confusing module items, blocks with items, and blocks without items.
Addresses https://github.com/rust-lang/rust/pull/143141#discussion_r2254893953 and https://github.com/rust-lang/rust/pull/143141#discussion_r2258004452.
A couple of related cleanups are also added on top.
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Tail call diagnostics to include lifetime info
Fixes https://github.com/rust-lang/rust/issues/144957
r? ```@WaffleLapkin``` ```@compiler-errors```
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strip prefix of temporary file names when it exceeds filesystem name length limit
When doing lto, rustc generates filenames that are concatenating many information.
In the case of this testcase, it is concatenating crate name and rust file name, plus some hash, and the extension. In some other cases it will concatenate even more information reducing the maximum effective crate name to about 110 chars on linux filesystems where filename max length is 255
This commit is ensuring that the temporary file names are limited in size, while still reasonably ensuring the unicity (with hashing of the stripped part)
Fix: rust-lang/rust#49914
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Couple of minor cleanups
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E0793: Clarify that it applies to unions as well
pick up inactive PR: https://github.com/rust-lang/rust/pull/131472
Also:
Adjust the language slightly to be more consistent with other similar messages (was created instead of got created).
Add a short section on union.
Add an example line showing referencing a field in a packed struct is safe if the field's type isn't more strictly aligned than the pack.
r? compiler-errors
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Fix tail calls to `#[track_caller]` functions
We want `#[track_caller]` to be semver independent, i.e. it should not be a breaking change to add or remove it. Since it changes ABI of a function (adding an additional argument) we have to be careful to preserve this property when adding tail calls.
The only way to achieve this that I can see is:
- we forbid tail calls in functions which are marked with `#[track_caller]` (already implemented)
- tail-calling a `#[track_caller]` marked function downgrades the tail-call to a normal call (or equivalently tail-calls the shim made by fn def to fn ptr cast) (this pr)
Ideally the downgrade would be performed by a MIR pass, but that requires post mono MIR opts (cc ```@saethlin,``` rust-lang/rust#131650). For now I've changed code in cg_ssa to accomodate this behaviour (+ added a hack to mono collector so that the shim is actually generated)
Additionally I added a lint, although I don't think it's strictly necessary.
Alternative to rust-lang/rust#144762 (and thus closes rust-lang/rust#144762)
Fixes https://github.com/rust-lang/rust/issues/144755
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r=davidtwco
compiler: Allow `extern "interrupt" fn() -> !`
While reviewing rust-lang/rust#142633 I overlooked a few details because I was kind of excited.
- Fixes rust-lang/rust#143072
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Implement autodiff using intrinsics
This PR aims to move autodiff logic to `autodiff` intrinsic. Allowing us to delete a great part of our frontend code and overall, simplify the compilation pipeline of autodiff functions.
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Change the desugaring of `assert!` for better error output
In the desugaring of `assert!`, we now expand to a `match` expression instead of `if !cond {..}`.
The span of incorrect conditions will point only at the expression, and not the whole `assert!` invocation.
```
error[E0308]: mismatched types
--> $DIR/issue-14091.rs:2:13
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LL | assert!(1,1);
| ^ expected `bool`, found integer
```
We no longer mention the expression needing to implement the `Not` trait.
```
error[E0308]: mismatched types
--> $DIR/issue-14091-2.rs:15:13
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LL | assert!(x, x);
| ^ expected `bool`, found `BytePos`
```
Now `assert!(val)` desugars to:
```rust
match val {
true => {},
_ => $crate::panic::panic_2021!(),
}
```
Fix #122159.
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Patterns: represent constants as valtrees
Const patterns are always valtrees now. Let's represent that in the types. We use `ty::Value` for this since it nicely packages value and type, and has some convenient methods.
Cc `@Nadrieril` `@BoxyUwU`
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Rollup of 11 pull requests
Successful merges:
- rust-lang/rust#137872 (Include whitespace in "remove |" suggestion and make it hidden)
- rust-lang/rust#144631 (Fix test intrinsic-raw_eq-const-bad for big-endian)
- rust-lang/rust#145233 (cfg_select: Support unbraced expressions)
- rust-lang/rust#145261 (Improve tracing in bootstrap)
- rust-lang/rust#145324 (Rename and document `ONLY_HOSTS` in bootstrap)
- rust-lang/rust#145353 (bootstrap: Fix jemalloc 64K page support for aarch64 tools)
- rust-lang/rust#145379 (bootstrap: Support passing `--timings` to cargo)
- rust-lang/rust#145397 (Rust documentation, use `rustc-dev-guide` :3)
- rust-lang/rust#145398 (Use `default_field_values` in `Resolver`)
- rust-lang/rust#145401 (cleanup: Remove useless `[T].iter().last()`)
- rust-lang/rust#145403 (Adjust error message grammar to be less awkward)
r? `@ghost`
`@rustbot` modify labels: rollup
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In Fedora, when we built rustc with PGO on ppc64le, we started failing
the test `issue-74564-if-expr-stack-overflow.rs`. This could also be
reproduced on other arches by setting a smaller `RUST_MIN_STACK`, so
it's probably just unlucky that ppc64le PGO created a large stack frame
somewhere in this recursion path. Adding an `ensure_sufficient_stack`
solves the stack overflow.
Historically, that test and its fix were added in rust-lang/rust#74708,
which was also an `ensure_sufficient_stack` in this area of code at the
time. However, the refactor in rust-lang/rust#92573 basically left that
to the general `MutVisitor`, and then rust-lang/rust#142240 removed even
that ensure call. It may be luck that our tier-1 tested targets did not
regress the original issue across those refactors.
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Add infrastructure to apply a derive macro to arguments, consuming and
returning a `TokenTree` only.
Handle `SyntaxExtensionKind::MacroRules` when expanding a derive, if the
macro's kinds support derive.
Add tests covering various cases of `macro_rules` derives.
Note that due to a pre-existing FIXME in `expand.rs`, derives are
re-queued and some errors get emitted twice. Duplicate diagnostic
suppression makes them not visible, but the FIXME should still get
fixed.
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This handles various kinds of errors, but does not allow applying the
derive yet.
This adds the feature gate `macro_derive`.
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Adjust error message grammar to be less awkward
r? ``@estebank``
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cleanup: Remove useless `[T].iter().last()`
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Use `default_field_values` in `Resolver`
Change `Resolver` to use `feature(default_field_values)`. This change is non-exhaustive, as fields may have been added since I made this commit, and `Fx(Index/Hash)(Map/Set)` types would need to have a `const` constructable to change the majority of the fields left over.
Using default field values should make it easier to review when we add or remove fields to `Resolver` in the future, and highlight which fields are run-time dependent in `Resolver::new`.
r? ``@petrochenkov``
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cfg_select: Support unbraced expressions
Tracking issue for `cfg_select`: rust-lang/rust#115585
When operating on expressions, `cfg_select!` can now handle expressions
without braces. (It still requires braces for other things, such as
items.)
Expand the test coverage and documentation accordingly.
---
I'm not sure whether deciding to extend `cfg_select!` in this way is T-lang or T-libs-api. I've labeled for both, with the request that both teams don't block on each other. :)
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Include whitespace in "remove |" suggestion and make it hidden
Tweak error rendering of patterns with an extra `|` on either end.
Built on #137409. Only last commit is relevant.
? ``@compiler-errors``
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Rework target checking for built-in attributes
This is a refactoring of target checking for built-in attributes.
This PR has the following goals:
- Only refactor the 80% of the attributes that are simple to target check. More complicated ones like `#[repr]` will be in a future PR. Tho I have written the code in such a way that this will be possible to add in the future.
- No breaking changes.
- This part of the codebase is not very well tested though, we can do a crater run if we want to be sure.
- I've spotted quite a few weird situations (like I don't think an impl block should be deprecated?). We can propose fixing these to in a future PR
Fixes https://github.com/rust-lang/rust/issues/143780
Fixes https://github.com/rust-lang/rust/issues/138510
I've split it in commits and left a description on some of the commits to help review.
r? `@jdonszelmann`
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Every acceptor gets an `ALLOWED_TARGETS` specification which can specify per target whether it is allowed, warned, or errored.
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