| Age | Commit message (Collapse) | Author | Lines |
|---|
|
|
|
|
|
Add a fully fledged `Clause` type, rename old `Clause` to `ClauseKind`
Does two basic things before I put up a more delicate set of PRs (along the lines of #112714, but hopefully much cleaner) that migrate existing usages of `ty::Predicate` to `ty::Clause` (`predicates_of`/`item_bounds`/`ParamEnv::caller_bounds`).
1. Rename `Clause` to `ClauseKind`, so it's parallel with `PredicateKind`.
2. Add a new `Clause` type which is parallel to `Predicate`.
* This type exposes `Clause::kind(self) -> Binder<'tcx, ClauseKind<'tcx>>` which is parallel to `Predicate::kind` 😸
The new `Clause` type essentially acts as a newtype wrapper around `Predicate` that asserts that it is specifically a `PredicateKind::Clause`. Turns out from experimentation[^1] that this is not negative performance-wise, which is wonderful, since this a much simpler design than something that requires encoding the discriminant into the alignment bits of a predicate kind, or something else like that...
r? ``@lcnr`` or ``@oli-obk``
[^1]: https://github.com/rust-lang/rust/pull/112714#issuecomment-1595653910
|
|
|
|
|
|
r=lcnr
Don't consider TAIT normalizable to hidden ty if it would result in impossible item bounds
See test for example where we shouldn't consider it possible to alias-relate a TAIT and hidden type.
r? `@lcnr`
|
|
Better error for non const `PartialEq` call generated by `match`
Resolves #90237
|
|
|
|
impossible item bounds
|
|
|
|
|
|
normalize closure output in equate_inputs_and_outputs
Fixes #112604
|
|
|
|
be more explicit in where we only add new hidden types
and where we also have to deal with item bounds.
|
|
|
|
|
|
Take MIR dataflow analyses by mutable reference
The main motivation here is any analysis requiring dynamically sized scratch memory to work. One concrete example would be pointer target tracking, where tracking the results of a dereference can result in multiple possible targets. This leads to processing multi-level dereferences requiring the ability to handle a changing number of potential targets per step. A (simplified) function for this would be `fn apply_deref(potential_targets: &mut Vec<Target>)` which would use the scratch space contained in the analysis to send arguments and receive the results.
The alternative to this would be to wrap everything in a `RefCell`, which is what `MaybeRequiresStorage` currently does. This comes with a small perf cost and loses the compiler's guarantee that we don't try to take multiple borrows at the same time.
For the implementation:
* `AnalysisResults` is an unfortunate requirement to avoid an unconstrained type parameter error.
* `CloneAnalysis` could just be `Clone` instead, but that would result in more work than is required to have multiple cursors over the same result set.
* `ResultsVisitor` now takes the results type on in each function as there's no other way to have access to the analysis without cloning it. This could use an associated type rather than a type parameter, but the current approach makes it easier to not care about the type when it's not necessary.
* `MaybeRequiresStorage` now no longer uses a `RefCell`, but the graphviz formatter now does. It could be removed, but that would require even more changes and doesn't really seem necessary.
|
|
Add `-Ztrait-solver=next-coherence`
Flag that conditionally uses the trait solver *only* during coherence, for more testing and/or eventual partial-migration onto the trait solver (in the medium- to long-term).
* This still uses the selection context in some of the coherence methods I think, so it's not "complete". Putting this up for review and/or for further work in-tree.
* I probably need to spend a bit more time making sure that we don't sneakily create any other infcx's during coherence that also need the new solver enabled.
r? `@lcnr`
|
|
Rollup of 8 pull requests
Successful merges:
- #111250 (Add Terminator conversion from MIR to SMIR, part #2)
- #112310 (Add new Tier-3 targets: `loongarch64-unknown-none*`)
- #112334 (Add myself to highfive rotation)
- #112340 (remove `TyCtxt::has_error_field` helper method)
- #112343 (Prevent emitting `missing_docs` for `pub extern crate`)
- #112350 (Avoid duplicate type sanitization of local decls in borrowck)
- #112356 (Fix comment for `get_region_var_origins`)
- #112358 (Remove default visitor impl in region constraint generation)
r? `@ghost`
`@rustbot` modify labels: rollup
|
|
r=compiler-errors
Remove default visitor impl in region constraint generation
I wanted to group it together with other possibly minor borrowck cleanups but that's all I have right now so I rather put it up than forget about it before doing something else.
r? `@compiler-errors`
|
|
|
|
The type of the local decl is already sanitized in `visit_local_decl`.
|
|
|
|
Don't suggest changing `&self` and `&mut self` in function signature to be mutable when taking `&mut self` in closure
Current suggestion for when taking a mutable reference to `self` in a closure (as an upvar) will produce a machine-applicable suggestion to change the `self` in the function signature to `mut self`, but does not account for the specialness of implicit self in that it can already have `&` and `&mut` (see #111554). This causes the function signature to become `test(&mut mut self)` which does not seem desirable.
```
error[E0596]: cannot borrow `self` as mutable, as it is not declared as mutable
--> src/sound_player.rs:870:11
|
869 | pub fn test(&mut self) {
| ---- help: consider changing this to be mutable: `mut self`
870 | || test2(&mut self);
| ^^^^^^^^^ cannot borrow as mutable
```
This PR suppresses the "changing this to be mutable" suggestion if the implicit self is either `ImplicitSelfKind::ImmRef` or `ImplicitSelfKind::MutRef`.
Fixes #111554.
|
|
|
|
Preserve substs in opaques recorded in typeck results
This means that we now prepopulate MIR with opaques with the right substs.
The first commit is a hack that I think we discussed, having to do with `DefiningAnchor::Bubble` basically being equivalent to `DefiningAnchor::Error` in the new solver, so having to use `DefiningAnchor::Bind` instead, lol.
r? `@lcnr`
|
|
change `BorrowKind::Unique` to be a mutating `PlaceContext`
fixes #112056
I believe that `BorrowKind::Unique` is a footgun in general, so I added a FIXME and opened https://github.com/rust-lang/rust/issues/112072. This is a bit too involved for this PR though.
|
|
|
|
|
|
|
|
Perform MIR type ops locally in new solver
The new solver already does caching, and it's generally more correct to be using the infcx of the MIR typeck (which has the defining anchor set correctly and has already initialized all the opaques from HIR typeck).
This is based on #111918 so look at the final 3 commits.
This actually causes some tests to go from passing to failing, and failing to passing. Here's the full diff: https://www.diffchecker.com/hB4bh1A9/
Putting this up for exposure mostly.
r? `@lcnr`
|
|
Remove DesugaringKind::Replace.
A simple boolean flag is enough.
|
|
|
|
|
|
|
|
Use `ErrorGuaranteed` more in MIR type ops
Delay bugs more eagerly and pass them through type op infra instead of delaying them at all the usage-sites.
Follow up to: https://github.com/rust-lang/rust/pull/111741#discussion_r1203840588
r? `@lcnr`
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Rollup of 5 pull requests
Successful merges:
- #111741 (Use `ObligationCtxt` in custom type ops)
- #111840 (Expose more information in `get_body_with_borrowck_facts`)
- #111876 (Roll compiler_builtins to 0.1.92)
- #111912 (Use `Option::is_some_and` and `Result::is_ok_and` in the compiler )
- #111915 (libtest: Improve error when missing `-Zunstable-options`)
r? `@ghost`
`@rustbot` modify labels: rollup
|
|
r=petrochenkov
Use `Option::is_some_and` and `Result::is_ok_and` in the compiler
`.is_some_and(..)`/`.is_ok_and(..)` replace `.map_or(false, ..)` and `.map(..).unwrap_or(false)`, making the code more readable.
This PR is a sibling of https://github.com/rust-lang/rust/pull/111873#issuecomment-1561316515
|
|
Expose more information in `get_body_with_borrowck_facts`
Verification tools for Rust such as, for example, Creusot or Prusti would benefit from having access to more information computed by the borrow checker.
As a first step in that direction, #86977 added the `get_body_with_borrowck_facts` API, allowing compiler consumers to obtain a `mir::Body` with accompanying borrow checker information.
At RustVerify 2023, multiple people working on verification tools expressed their need for a more comprehensive API.
While eventually borrow information could be part of Stable MIR, in the meantime, this PR proposes a more limited approach, extending the existing `get_body_with_borrowck_facts` API.
In summary, we propose the following changes:
- Permit obtaining the borrow-checked body without necessarily running Polonius
- Return the `BorrowSet` and the `RegionInferenceContext` in `BodyWithBorrowckFacts`
- Provide a way to compute the `borrows_out_of_scope_at_location` map
- Make some helper methods public
This is similar to #108328 but smaller in scope.
`@smoelius` Do you think these changes would also be sufficient for your needs?
r? `@oli-obk`
cc `@JonasAlaif`
|
|
Use `ObligationCtxt` in custom type ops
We already make one when evaluating the `CustomTypeOp`, so it's simpler to just pass it to the user. Removes a redundant `ObligationCtxt::new_in_snapshot` usage and simplifies some other code.
This makes several refactorings related to opaque types in the new solver simpler, but those are not included in this PR.
|
|
Don't skip mir typeck if body has errors
Comment says:
```
// if verifier failed, don't do further checks to avoid ICEs
```
But there are no ICEs to be found. The comment is quite old, so perhaps something fixed it... maybe because the MIR typechecker is delaying span bugs rather than panicking via eager bugs? IDK
I'm generally inclined to fix the ICEs themselves that were to arise from this, rather than just totally skipping large parts of the compiler that have impacts on downstream logic (namely, our opaque type results are affected). Anyways, this happens on the error path, so it shouldn't really matter.
Fixes this hack: https://github.com/rust-lang/rust/pull/111853/files#r1201501540
|
|
Leverage the interval property to precompute borrow kill points.
|
|
|
