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Rollup of 9 pull requests
Successful merges:
- #123237 (Various rustc_codegen_ssa cleanups)
- #126960 (Improve error message in tidy)
- #127002 (Implement `x perf` as a separate tool)
- #127081 (Add a run-make test that LLD is not being used by default on the x64 beta/stable channel)
- #127106 (Improve unsafe extern blocks diagnostics)
- #127110 (Fix a error suggestion for E0121 when using placeholder _ as return types on function signature.)
- #127114 (fix: prefer `(*p).clone` to `p.clone` if the `p` is a raw pointer)
- #127118 (Show `used attribute`'s kind for user when find it isn't applied to a `static` variable.)
- #127122 (Remove uneccessary condition in `div_ceil`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix a error suggestion for E0121 when using placeholder _ as return types on function signature.
Recommit after refactoring based on comment:
https://github.com/rust-lang/rust/pull/126017#issuecomment-2189149361
But when changing return type's lifetime to `ReError` will affect the subsequent borrow check process and cause test11 in typeck_type_placeholder_item.rs to lost E0515 message.
```rust
fn test11(x: &usize) -> &_ {
//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
&x //~ ERROR cannot return reference to function parameter(this E0515 msg will disappear)
}
```
fixes #125488
r? ``@pnkfelix``
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Implement new effects desugaring
cc `@rust-lang/project-const-traits.` Will write down notes once I have finished.
* [x] See if we want `T: Tr` to desugar into `T: Tr, T::Effects: Compat<true>`
* [x] Fix ICEs on `type Assoc: ~const Tr` and `type Assoc<T: ~const Tr>`
* [ ] add types and traits to minicore test
* [ ] update rustc-dev-guide
Fixes #119717
Fixes #123664
Fixes #124857
Fixes #126148
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function signature.
Recommit after refactoring based on comment:
https://github.com/rust-lang/rust/pull/126017#issuecomment-2189149361
But when changing return type's lifetime to `ReError` will affect the subsequent borrow check process and cause test11 in typeck_type_placeholder_item.rs to lost E0515 message.
```rust
fn test11(x: &usize) -> &_ {
//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
&x //~ ERROR cannot return reference to function parameter(this E0515 msg will disappear)
}
```
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AliasTy/AliasTerm/TraitRef/projection
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Unsafe extern blocks
This implements RFC 3484.
Tracking issue #123743 and RFC https://github.com/rust-lang/rfcs/pull/3484
This is better reviewed commit by commit.
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that exhaustively supports all call sites
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use it for local items
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Uplift `EarlyBinder` into `rustc_type_ir`
We also need to give `EarlyBinder` a `'tcx` param, so that we can carry the `Interner` in the `EarlyBinder` too. This is necessary because otherwise we have an unconstrained `I: Interner` parameter in many of the `EarlyBinder`'s inherent impls.
I also generally think that this is desirable to have, in case we later want to track some state in the `EarlyBinder`.
r? lcnr
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We are gonna need it to uplift EarlyBinder
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Rename Unsafe to Safety
Alternative to #124455, which is to just have one Safety enum to use everywhere, this opens the posibility of adding `ast::Safety::Safe` that's useful for unsafe extern blocks.
This leaves us today with:
```rust
enum ast::Safety {
Unsafe(Span),
Default,
// Safe (going to be added for unsafe extern blocks)
}
enum hir::Safety {
Unsafe,
Safe,
}
```
We would convert from `ast::Safety::Default` into the right Safety level according the context.
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The starting point for this was identical comments on two different
fields, in `ast::VariantData::Struct` and `hir::VariantData::Struct`:
```
// FIXME: investigate making this a `Option<ErrorGuaranteed>`
recovered: bool
```
I tried that, and then found that I needed to add an `ErrorGuaranteed`
to `Recovered::Yes`. Then I ended up using `Recovered` instead of
`Option<ErrorGuaranteed>` for these two places and elsewhere, which
required moving `ErrorGuaranteed` from `rustc_parse` to `rustc_ast`.
This makes things more consistent, because `Recovered` is used in more
places, and there are fewer uses of `bool` and
`Option<ErrorGuaranteed>`. And safer, because it's difficult/impossible
to set `recovered` to `Recovered::Yes` without having emitted an error.
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Some hir cleanups
It seemed odd to not put `AnonConst` in the arena, compared with the other types that we did put into an arena. This way we can also give it a `Span` without growing a lot of other HIR data structures because of the extra field.
r? compiler
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Signed-off-by: TechVest <techdashen@qq.com>
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This makes it easier to read the trait definition for newcomers:
Sorted from least “complex” to most “complex” followed by trivial “plumbing”
and grouped by area.
* Move `allow_infer` above all `*_infer` methods
* It's the least complex method of those
* Allows the `*_infer` to be placed right next to each other
* Move `probe_ty_param_bounds` further down right next to `lower_assoc_ty` and `probe_adt`
* It's more complex than the `infer` methods, it should come “later”
* Now all required lowering functions are grouped together
* Move the “plumbing” function `set_tainted_by_errors` further down
below any actual lowering methods.
* Provided method should come last
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Split from the main renaming commit to make git generate a proper diff for ease of reviewing.
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Most of the tracing calls didn't fully leverage the power of `tracing`.
For example, several of them used to hard-code method names / tracing spans
as well as variable names. Use `#[instrument]` and `?var` / `%var` (etc.) instead.
In my opinion, this is the proper way to migrate them from the old
AstConv nomenclature to the new HIR ty lowering one.
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Several (doc) comments were super outdated or didn't provide enough context.
Some doc comments shoved everything in a single paragraph without respecting
the fact that the first paragraph should be a single sentence because rustdoc
treats these as item descriptions / synopses on module pages.
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This includes updating astconv-related items and a few local variables.
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Replace closures with `_` when suggesting fully qualified path for method call
```
error[E0283]: type annotations needed
--> $DIR/into-inference-needs-type.rs:12:10
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LL | .into()?;
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= note: cannot satisfy `_: From<...>`
= note: required for `FilterMap<...>` to implement `Into<_>`
help: try using a fully qualified path to specify the expected types
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LL ~ let list = <FilterMap<Map<std::slice::Iter<'_, &str>, _>, _> as Into<T>>::into(vec
LL | .iter()
LL | .map(|s| s.strip_prefix("t"))
LL ~ .filter_map(Option::Some))?;
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```
Fix #122569.
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```
error[E0283]: type annotations needed
--> $DIR/into-inference-needs-type.rs:12:10
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LL | .into()?;
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= note: cannot satisfy `_: From<...>`
= note: required for `FilterMap<...>` to implement `Into<_>`
help: try using a fully qualified path to specify the expected types
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LL ~ let list = <FilterMap<Map<std::slice::Iter<'_, &str>, _>, _> as Into<T>>::into(vec
LL | .iter()
LL | .map(|s| s.strip_prefix("t"))
LL ~ .filter_map(Option::Some))?;
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```
Fix #122569.
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Merge `collect_mod_item_types` query into `check_well_formed`
follow-up to https://github.com/rust-lang/rust/pull/121154
this removes more potential parallel-compiler bottlenecks and moves diagnostics for the same items next to each other, instead of grouping diagnostics by analysis kind
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Unnamed union fields with enums are checked for, but if `find_field`
causes an ICE then the compiler won't get to that point.
Signed-off-by: David Wood <david@davidtw.co>
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Much better!
Note that this involves renaming (and updating the value of)
`DIAGNOSTIC_BUILDER` in clippy.
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Delayed bug audit
I went through all the calls to `delayed_bug` and `span_delayed_bug` and found a few places where they could be avoided.
r? `@compiler-errors`
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Also change its return type to `Result`.
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