Rollup of 10 pull requests #120710
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Rollup of 10 pull requests #120710
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…more projections.
This makes it possible for two nodes/edges in the coverage graph to share the same counter, without causing the instrumentor to inject unwanted duplicate counter-increment statements.
with this, alias-relate treats all aliases the same way and it can be used for structural normalization.
And make sure all other imports have non-empty resolution lists.
It doesn't affect behaviour, but makes sense with (a) `FailureNote` having `()` as its emission guarantee, and (b) in `Level` the `is_error` levels now are all listed before the non-`is_error` levels.
I.e. `Bug` and `Fatal` level diagnostics are never downgraded.
- Combine two different blocks involving `diagnostic.level.get_expectation_id()` into one. - Combine several `if`s involving `diagnostic.level` into a single `match`. This requires reordering some of the operations, but this has no functional effect.
The two kinds of delayed bug have quite different semantics so a stronger conceptual separation is nice. (`is_error` is a good example, because the two kinds have different behaviour.) The commit also moves the `DelayedBug` variant after `Error` in `Level`, to reflect the fact that it's weaker than `Error` -- it might trigger an error but also might not. (The pre-existing `downgrade_to_delayed_bug` function also reflects the notion that delayed bugs are lower/after normal errors.) Plus it condenses some of the comments on `Level` into a table, for easier reading, and introduces `can_be_top_or_sub` to indicate which levels can be used in top-level diagnostics vs. subdiagnostics. Finally, it renames `DiagCtxtInner::span_delayed_bugs` as `DiagCtxtInner::delayed_bugs`. The `span_` prefix is unnecessary because some delayed bugs don't have a span.
All the other `emit`/`emit_diagnostic` methods were recently made consuming (e.g. rust-lang#119606), but this one wasn't. But it makes sense to. Much of this is straightforward, and lots of `clone` calls are avoided. There are a couple of tricky bits. - `Emitter::primary_span_formatted` no longer takes a `Diagnostic` and returns a pair. Instead it takes the two fields from `Diagnostic` that it used (`span` and `suggestions`) as `&mut`, and modifies them. This is necessary to avoid the cloning of `diag.children` in two emitters. - `from_errors_diagnostic` is rearranged so various uses of `diag` occur before the consuming `emit_diagnostic` call.
Co-authored-by: Ralf Jung <post@ralfj.de>
…alfJung various const interning cleanups After rust-lang#119044 I noticed that some things can be simplified and refactored. This is also a requirement for rust-lang#116564 as there we'll need to treat the base allocation differently from the others r? `@RalfJung`
…i-obk Some cleanups around diagnostic levels. Plus some refactoring in and around diagnostic levels and emission. Details in the individual commit logs. r? ``@oli-obk``
…ructors, r=dtolnay,oli-obk Make `NonZero` constructors generic. This makes `NonZero` constructors generic, so that `NonZero::new` can be used without turbofish syntax. Tracking issue: rust-lang#120257 ~~I cannot figure out how to make this work with `const` traits. Not sure if I'm using it wrong or whether there's a bug:~~ ```rust 101 | if n == T::ZERO { | ^^^^^^^^^^^^ expected `host`, found `true` | = note: expected constant `host` found constant `true` ``` r? `@dtolnay`
…ochenkov Switch OwnedStore handle count to AtomicU32 This is already panics if overflowing a u32, so let's use the smaller int size to save a tiny bit of memory.
modify alias-relate to also normalize ambiguous opaques allows a bunch of further cleanups and generally simplifies the type system. To handle rust-lang/trait-system-refactor-initiative#8 we'll have to add a some additional complexity to the `(Alias, Infer)` branches in alias-relate, so removing the opaque type special case here is really valuable. It does worsen `deduce_closure_signature` and friends even more as they now receive an inference variable which is only constrained via an `AliasRelate` goal. These probably have to look into alias relate goals somehow. Leaving that for a future PR as this is something we'll have to tackle regardless. r? `@compiler-errors`
coverage: Split out counter increment sites from BCB node/edge counters This makes it possible for two nodes/edges in the coverage graph to share the same counter, without causing the instrumentor to inject unwanted duplicate counter-increment statements. --- `@rustbot` label +A-code-coverage
…handling, r=estebank Simplify codegen diagnostic handling Some nice improvements. Details in the individual commit logs. r? ``@estebank``
…in-pat, r=estebank Suggest `[tail @ ..]` on `[..tail]` and `[...tail]` where `tail` is unresolved Fixes rust-lang#120591. ~~Will conflict with rust-lang#120570~~ (rebased). r? estebank or compiler
…r-errors hir: Stop keeping prefixes for most of `use` list stems And make sure all other imports have non-empty resolution lists. Addresses one of FIXMEs in rust-lang#120206.
…rrors pattern_analysis: gather up place-relevant info We track 3 things about each place during exhaustiveness: its type, its (data) validity, and whether it's the scrutinee place. This PR gathers all three into a single struct. r? `@compiler-errors`
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Successful merges:
NonZeroconstructors generic. #120521 (MakeNonZeroconstructors generic.)Emitter::emit_diagnosticconsuming. #120575 (Simplify codegen diagnostic handling)[tail @ ..]on[..tail]and[...tail]wheretailis unresolved #120597 (Suggest[tail @ ..]on[..tail]and[...tail]wheretailis unresolved)uselist stems #120609 (hir: Stop keeping prefixes for most ofuselist stems)r? @ghost
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