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bors
42361da5d9 Auto merge of #98559 - jackh726:remove-reempty, r=oli-obk 
Remove ReEmpty

r? rust-lang/types
 2022-09-10 20:54:01 +00:00
Philipp Krones
98bf99e2f8 Merge commit 'b52fb5234cd7c11ecfae51897a6f7fa52e8777fc' into clippyup 2022-09-09 13:36:26 +02:00
Michael Goulet
854f751b26 Appease clippy again 2022-09-09 01:31:46 +00:00
Michael Goulet
ac1c68a5e6 Make clippy happy 2022-09-09 01:31:45 +00:00
Jack Huey
b640eaa71d Remove ReEmpty 2022-09-08 20:55:55 -04:00
bors
f47a1e24c7 Auto merge of #101577 - Dylan-DPC:rollup-l9xw7i7, r=Dylan-DPC 
Rollup of 7 pull requests

Successful merges:

 - #98933 (Opaque types' generic params do not imply anything about their hidden type's lifetimes)
 - #101041 (translations(rustc_session): migrates rustc_session to use SessionDiagnostic - Pt. 2)
 - #101424 (Adjust and slightly generalize operator error suggestion)
 - #101496 (Allow lower_lifetime_binder receive a closure)
 - #101501 (Allow lint passes to be bound by `TyCtxt`)
 - #101515 (Recover from typo where == is used in place of =)
 - #101545 (Remove unnecessary `PartialOrd` and `Ord`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-09-08 15:53:14 +00:00
Dylan DPC
9faa588446 Rollup merge of #101501 - Jarcho:tcx_lint_passes, r=davidtwco 
Allow lint passes to be bound by `TyCtxt`

This will allow storing things like `Ty<'tcx>` inside late lint passes. It's already possible to store various id types so they're already implicitly bound to a specific `TyCtxt`.

r? rust-lang/compiler
 2022-09-08 20:48:36 +05:30
bors
30a5815505 Auto merge of #101467 - nnethercote:shrink-hir-Ty-Pat, r=spastorino 
Shrink `hir::Ty` and `hir::Pat`

r? `@ghost`
 2022-09-08 13:11:57 +00:00
Dylan DPC
c3db185c52 Rollup merge of #101498 - petrochenkov:visparam, r=cjgillot 
rustc: Parameterize `ty::Visibility` over used ID

It allows using `LocalDefId` instead of `DefId` when possible, and also encode cheaper `Visibility<DefIndex>` into metadata.
 2022-09-08 11:55:09 +05:30
Nicholas Nethercote
c86a9c077c Introduce DotDotPos. 
This shrinks `hir::Pat` from 88 to 72 bytes.
 2022-09-08 15:25:50 +10:00
Nicholas Nethercote
977b6e29a3 Arena-allocate hir::Lifetime. 
This shrinks `hir::Ty` from 72 to 48 bytes.

`visit_lifetime` is added to the HIR stats collector because these types
are now stored in memory on their own, instead of being within other
types.
 2022-09-08 15:07:19 +10:00
bors
567e1bbca7 Auto merge of #101432 - nnethercote:shrink-PredicateS, r=lcnr 
Shrink `PredicateS`

r? `@ghost`
 2022-09-07 13:49:58 +00:00
Vadim Petrochenkov
9136096629 rustc: Parameterize ty::Visibility over used ID 
It allows using `LocalDefId` instead of `DefId` when possible, and also encode cheaper `Visibility<DefIndex>` into metadata.
 2022-09-07 13:35:41 +04:00
Jason Newcomb
abd3e7eabb Allow lint passes to be bound by TyCtxt 2022-09-06 14:23:03 -04:00
Oli Scherer
9cbbd4a80e Generalize the Assume intrinsic statement to a general Intrinsic statement 2022-09-06 14:18:32 +00:00
Oli Scherer
e1b3483ee8 Lower the assume intrinsic to a MIR statement 2022-09-06 14:18:32 +00:00
bors
ce339b219a Auto merge of #101241 - camsteffen:refactor-binding-annotations, r=cjgillot 
`BindingAnnotation` refactor

* `ast::BindingMode` is deleted and replaced with `hir::BindingAnnotation` (which is moved to `ast`)
* `BindingAnnotation` is changed from an enum to a tuple struct e.g. `BindingAnnotation(ByRef::No, Mutability::Mut)`
* Associated constants added for convenience `BindingAnnotation::{NONE, REF, MUT, REF_MUT}`

One goal is to make it more clear that `BindingAnnotation` merely represents syntax `ref mut` and not the actual binding mode. This was especially confusing since we had `ast::BindingMode`->`hir::BindingAnnotation`->`thir::BindingMode`.

I wish there were more symmetry between `ByRef` and `Mutability` (variant) naming (maybe `Mutable::Yes`?), and I also don't love how long the name `BindingAnnotation` is, but this seems like the best compromise. Ideas welcome.
 2022-09-06 03:16:29 +00:00
bors
2ccf843471 Auto merge of #101261 - TaKO8Ki:separate-receiver-from-arguments-in-hir, r=cjgillot 
Separate the receiver from arguments in HIR

Related to #100232

cc `@cjgillot`
 2022-09-05 16:21:40 +00:00
Takayuki Maeda
8931da40e3 use propagate_through_exprs instead of propagate_through_expr 
fix `ExprKind` static_assert_size

fix hir-stats
 2022-09-05 23:11:34 +09:00
bors
5ea99770d8 Auto merge of #101228 - nnethercote:simplify-hir-PathSegment, r=petrochenkov 
Simplify `hir::PathSegment`

r? `@petrochenkov`
 2022-09-05 13:36:54 +00:00
Takayuki Maeda
097ef517fe refactor: remove unnecessary variables 2022-09-05 22:31:02 +09:00
Takayuki Maeda
4bcaddeeb2 separate the receiver from arguments in HIR under /clippy 2022-09-05 22:25:57 +09:00
Dylan DPC
9ae329232b Rollup merge of #101142 - nnethercote:improve-hir-stats, r=davidtwco 
Improve HIR stats

#100398 improve the AST stats collection done by `-Zhir-stats`. This PR does the same for HIR stats collection.

r? `@davidtwco`
 2022-09-05 14:15:51 +05:30
Nicholas Nethercote
2d4349c22d Pack Term in the same way as GenericArg. 
This shrinks the `PredicateS` type, which is instanted frequently.
 2022-09-05 15:08:52 +10:00
Nicholas Nethercote
25f6f18834 Make hir::PathSegment::res non-optional. 2022-09-05 14:20:25 +10:00
Cameron Steffen
e5f30f4dfa clippy: BindingAnnotation change 2022-09-02 13:03:11 -05:00
bors
5b784f8ed2 Auto merge of #101249 - matthiaskrgr:rollup-wahnoz8, r=matthiaskrgr 
Rollup of 10 pull requests

Successful merges:

 - #100787 (Pretty printing give proper error message without panic)
 - #100838 (Suggest moving redundant generic args of an assoc fn to its trait)
 - #100844 (migrate rustc_query_system to use SessionDiagnostic)
 - #101140 (Update Clippy)
 - #101161 (Fix uintended diagnostic caused by `drain(..)`)
 - #101165 (Use more `into_iter` rather than `drain(..)`)
 - #101229 (Link “? operator” to relevant chapter in The Book)
 - #101230 (lint: avoid linting diag functions with diag lints)
 - #101236 (Avoid needless buffer zeroing in `std::sys::windows::fs`)
 - #101240 (Fix a typo on `wasm64-unknown-unknown` doc)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-08-31 21:45:18 +00:00
Jason Newcomb
7bd5b012c7 Use CountIsStart in clippy 2022-08-31 09:45:51 -04:00
Jason Newcomb
fb41bfa774 Merge commit 'f51aade56f93175dde89177a92e3669ebd8e7592' into clippyup 2022-08-31 09:24:45 -04:00
Ralf Jung
7298de2568 fix a clippy test 2022-08-31 15:24:40 +02:00
bors
7ba06ec9c5 Auto merge of #98919 - 5225225:stricter-invalid-value, r=RalfJung 
Strengthen invalid_value lint to forbid uninit primitives, adjust docs to say that's UB

For context: https://github.com/rust-lang/rust/issues/66151#issuecomment-1174477404=

This does not make it a FCW, but it does explicitly state in the docs that uninit integers are UB.

This also doesn't affect any runtime behavior, uninit u32's will still successfully be created through mem::uninitialized.
 2022-08-30 20:39:01 +00:00
5225225
98fe5f7c7d Fix tests due to stricter invalid_value 2022-08-29 21:28:35 +01:00
Nilstrieb
ce847beb47 Revert let_chains stabilization 
This reverts commit 3266460749.

This is the revert against master, the beta revert was already done in #100538.
 2022-08-29 19:34:11 +02:00
Nicholas Nethercote
3ce109e12d Use &'hir Ty everywhere. 
For consistency, and because it makes HIR measurement simpler and more
accurate.
 2022-08-29 06:35:14 +10:00
Nicholas Nethercote
3b80e994d5 Use &'hir Expr everywhere. 
For consistency, and because it makes HIR measurement simpler and more
accurate.
 2022-08-29 06:35:14 +10:00
Tomasz Miąsko
e4eddc611a Replace Body::basic_blocks() with field access 2022-08-26 14:27:08 +02:00
Yuki Okushi
2cdc54d265 Rollup merge of #99332 - jyn514:stabilize-label-break-value, r=petrochenkov 
Stabilize `#![feature(label_break_value)]`

See the stabilization report in https://github.com/rust-lang/rust/issues/48594#issuecomment-1186213313.
 2022-08-25 08:50:54 +09:00
Joshua Nelson
345c42a2d6 Stabilize #![feature(label_break_value)] 
# Stabilization proposal

The feature was implemented in https://github.com/rust-lang/rust/pull/50045 by est31 and has been in nightly since 2018-05-16 (over 4 years now).
There are [no open issues][issue-label] other than the tracking issue. There is a strong consensus that `break` is the right keyword and we should not use `return`.

There have been several concerns raised about this feature on the tracking issue (other than the one about tests, which has been fixed, and an interaction with try blocks, which has been fixed).
1. nrc's original comment about cost-benefit analysis: https://github.com/rust-lang/rust/issues/48594#issuecomment-422235234
2. joshtriplett's comments about seeing use cases: https://github.com/rust-lang/rust/issues/48594#issuecomment-422281176
3. withoutboats's comments that Rust does not need more control flow constructs: https://github.com/rust-lang/rust/issues/48594#issuecomment-450050630

Many different examples of code that's simpler using this feature have been provided:
- A lexer by rpjohnst which must repeat code without label-break-value: https://github.com/rust-lang/rust/issues/48594#issuecomment-422502014
- A snippet by SergioBenitez which avoids using a new function and adding several new return points to a function: https://github.com/rust-lang/rust/issues/48594#issuecomment-427628251. This particular case would also work if `try` blocks were stabilized (at the cost of making the code harder to optimize).
- Several examples by JohnBSmith: https://github.com/rust-lang/rust/issues/48594#issuecomment-434651395
- Several examples by Centril: https://github.com/rust-lang/rust/issues/48594#issuecomment-440154733
- An example by petrochenkov where this is used in the compiler itself to avoid duplicating error checking code: https://github.com/rust-lang/rust/issues/48594#issuecomment-443557569
- Amanieu recently provided another example related to complex conditions, where try blocks would not have helped: https://github.com/rust-lang/rust/issues/48594#issuecomment-1184213006

Additionally, petrochenkov notes that this is strictly more powerful than labelled loops due to macros which accidentally exit a loop instead of being consumed by the macro matchers: https://github.com/rust-lang/rust/issues/48594#issuecomment-450246249

nrc later resolved their concern, mostly because of the aforementioned macro problems.
joshtriplett suggested that macros could be able to generate IR directly
(https://github.com/rust-lang/rust/issues/48594#issuecomment-451685983) but there are no open RFCs,
and the design space seems rather speculative.

joshtriplett later resolved his concerns, due to a symmetry between this feature and existing labelled break: https://github.com/rust-lang/rust/issues/48594#issuecomment-632960804

withoutboats has regrettably left the language team.

joshtriplett later posted that the lang team would consider starting an FCP given a stabilization report: https://github.com/rust-lang/rust/issues/48594#issuecomment-1111269353

[issue-label]: https://github.com/rust-lang/rust/issues?q=is%3Aissue+is%3Aopen+label%3AF-label_break_value+

 ## Report

+ Feature gate:
    - d695a497bb/src/test/ui/feature-gates/feature-gate-label_break_value.rs
+ Diagnostics:
    - 6b2d3d5f3c/compiler/rustc_parse/src/parser/diagnostics.rs (L2629)
    - f65bf0b2bb/compiler/rustc_resolve/src/diagnostics.rs (L749)
    - f65bf0b2bb/compiler/rustc_resolve/src/diagnostics.rs (L1001)
    - 111df9e6ed/compiler/rustc_passes/src/loops.rs (L254)
    - d695a497bb/compiler/rustc_parse/src/parser/expr.rs (L2079)
    - d695a497bb/compiler/rustc_parse/src/parser/expr.rs (L1569)
+ Tests:
    - https://github.com/rust-lang/rust/blob/master/src/test/ui/label/label_break_value_continue.rs
    - https://github.com/rust-lang/rust/blob/master/src/test/ui/label/label_break_value_unlabeled_break.rs
    - https://github.com/rust-lang/rust/blob/master/src/test/ui/label/label_break_value_illegal_uses.rs
    - https://github.com/rust-lang/rust/blob/master/src/test/ui/lint/unused_labels.rs
    - https://github.com/rust-lang/rust/blob/master/src/test/ui/run-pass/for-loop-while/label_break_value.rs

 ## Interactions with other features

Labels follow the hygiene of local variables.

label-break-value is permitted within `try` blocks:
```rust
let _: Result<(), ()> = try {
    'foo: {
        Err(())?;
        break 'foo;
    }
};
```

label-break-value is disallowed within closures, generators, and async blocks:
```rust
'a: {
    || break 'a
    //~^ ERROR use of unreachable label `'a`
    //~| ERROR `break` inside of a closure
}
```

label-break-value is disallowed on [_BlockExpression_]; it can only occur as a [_LoopExpression_]:
```rust
fn labeled_match() {
    match false 'b: { //~ ERROR block label not supported here
        _ => {}
    }
}

macro_rules! m {
    ($b:block) => {
        'lab: $b; //~ ERROR cannot use a `block` macro fragment here
        unsafe $b; //~ ERROR cannot use a `block` macro fragment here
        |x: u8| -> () $b; //~ ERROR cannot use a `block` macro fragment here
    }
}

fn foo() {
    m!({});
}
```

[_BlockExpression_]: https://doc.rust-lang.org/nightly/reference/expressions/block-expr.html
[_LoopExpression_]: https://doc.rust-lang.org/nightly/reference/expressions/loop-expr.html
 2022-08-23 21:14:12 -05:00
Nicholas Nethercote
06d7119f40 Remove the symbol from ast::LitKind::Err. 
Because it's never used meaningfully.
 2022-08-23 16:56:24 +10:00
Matthias Krüger
37eeed701a Rollup merge of #100018 - nnethercote:clean-up-LitKind, r=petrochenkov 
Clean up `LitKind`

r? ``@petrochenkov``
 2022-08-17 12:32:49 +02:00
Nicholas Nethercote
e92183c286 Rename some things related to literals. 
- Rename `ast::Lit::token` as `ast::Lit::token_lit`, because its type is
  `token::Lit`, which is not a token. (This has been confusing me for a
  long time.)
  reasonable because we have an `ast::token::Lit` inside an `ast::Lit`.
- Rename `LitKind::{from,to}_lit_token` as
  `LitKind::{from,to}_token_lit`, to match the above change and
  `token::Lit`.
 2022-08-16 13:41:34 +10:00
Nicholas Nethercote
6e5f90ae46 Shrink ast::Attribute. 2022-08-16 11:10:13 +10:00
bors
86a0a18179 Auto merge of #96745 - ehuss:even-more-attribute-validation, r=cjgillot 
Visit attributes in more places.

This adds 3 loosely related changes (I can split PRs if desired):

- Attribute checking on pattern struct fields.
- Attribute checking on struct expression fields.
- Lint level visiting on pattern struct fields, struct expression fields, and generic parameters.

There are still some lints which ignore lint levels in various positions. This is a consequence of how the lints themselves are implemented. For example, lint levels on associated consts don't work with `unused_braces`.
 2022-08-15 05:50:54 +00:00
Mark Rousskov
1a3192a331 Adjust cfgs 2022-08-12 16:28:15 -04:00
Eric Huss
3c4aec500f Update clippy for introduction of Node::ExprField 2022-08-11 21:56:33 -07:00
bors
9ac237dce5 Auto merge of #100419 - flip1995:clippyup, r=Manishearth 
Update Clippy

r? `@Manishearth`
 2022-08-12 00:12:51 +00:00
Matthias Krüger
4d8b6d4f24 Rollup merge of #100392 - nnethercote:simplify-visitors, r=cjgillot 
Simplify visitors

By removing some unused arguments.

r? `@cjgillot`
 2022-08-11 22:53:08 +02:00
Philipp Krones
dc29cfb8d5 Merge commit '2b2190cb5667cdd276a24ef8b9f3692209c54a89' into clippyup 2022-08-11 19:42:16 +02:00
Nicholas Nethercote
eb688958d3 Simplify rustc_ast::visit::Visitor::visit_poly_trait_ref. 
It is passed an argument that is never used.
 2022-08-11 11:10:01 +10:00
Camille GILLOT
cf3f71d2a2 Do not consider method call receiver as an argument in AST. 2022-08-10 18:34:54 +02:00