Fix name error in aarch64_apple_watchos tier 3 target
fix llvm_target wrong name `aarch-apple-watchos` to `aarch64-apple-watchos`, sorry for my mistake.
previous pr: https://github.com/rust-lang/rust/pull/119074
r? compiler-team
Simple modification of `non_lifetime_binders`'s diagnostic information to adapt to type binders
fixes#119067
Replace diagnostic information "lifetime bounds cannot be used in this context" to "bounds cannot be used in this context".
```rust
#![allow(incomplete_features)]
#![feature(non_lifetime_binders)]
trait Trait {}
trait Trait2
where for <T: Trait> ():{}
//~^ ERROR bounds cannot be used in this context
```
Give `VariantData::Struct` named fields, to clairfy `recovered`.
Implements https://github.com/rust-lang/rust/pull/119121#discussion_r1431467066. Supersedes #119121
This way, it's clear what the bool fields means, instead of having to find where it's generated. Changes both ast and hir.
r? `@compiler-errors`
Add method to get instance instantiation arguments
Add a method to get the instance instantiation arguments, and include that information in the instance debug.
coverage: Check for `async fn` explicitly, without needing a heuristic
The old code used a heuristic to detect async functions and adjust their coverage spans to produce better output. But there's no need to resort to a heuristic when we can just look back at the original definition and check whether the current function is actually an `async fn`.
In addition to being generally nicer, this also gets rid of the one piece of code that specifically cares about `CoverageSpan::is_closure` representing an actual closure. All remaining code that inspects that field just uses it as an indication that the span is a hole that should be carved out of other spans, and then discarded.
That opens up the possibility of introducing other kinds of “hole” spans, e.g. for nested functions/types/macros, and having them all behave uniformly.
---
`@rustbot` label +A-code-coverage
Rollup of 7 pull requests
Successful merges:
- #118691 (Add check for possible CStr literals in pre-2021)
- #118973 (rustc_codegen_ssa: Don't drop `IncorrectCguReuseType` , make `rustc_expected_cgu_reuse` attr work)
- #119071 (-Znext-solver: adapt overflow rules to avoid breakage)
- #119089 (effects: fix a comment)
- #119094 (Add function ABI and type layout to StableMIR)
- #119102 (Add arm-none-eabi and armv7r-none-eabi platform-support documentation.)
- #119107 (subtype_predicate: remove unnecessary probe)
Failed merges:
- #119135 (Fix crash due to `CrateItem::kind()` not handling constructors)
- #119141 (Add method to get instance instantiation arguments)
r? `@ghost`
`@rustbot` modify labels: rollup
subtype_predicate: remove unnecessary probe
There is no reason to probe here. The failure either results in an actual type error, in which cases the probe is useless, or it is used inside of evaluate, in which case we're already inside of the `fn evaluation_probe`, so it is also not necessary.
Add function ABI and type layout to StableMIR
This change introduces a new module to StableMIR named `abi` with information from `rustc_target::abi` and `rustc_abi`, that allow users to retrieve more low level information required to perform bit-precise analysis.
The layout of a type can be retrieved via `Ty::layout`, and the instance ABI can be retrieved via `Instance::fn_abi()`.
To properly handle errors while retrieve layout information, we had to implement a few layout related traits.
r? ```@compiler-errors```
-Znext-solver: adapt overflow rules to avoid breakage
Do not erase overflow constraints if they are from equating the impl header when normalizing[^1].
This should be the minimal change to not break crates depending on the old project behavior of "apply impl constraints while only lazily evaluating any nested goals".
Fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/70, see https://hackmd.io/ATf4hN0NRY-w2LIVgeFsVg for the reasoning behind this.
Only keeping constraints on overflow for `normalize-to` goals as that's the only thing needed for backcompat. It also allows us to not track the origin of root obligations. The issue with root goals would be something like the following:
```rust
trait Foo {}
trait Bar {}
trait FooBar {}
impl<T: Foo + Bar> FooBar for T {}
// These two should behave the same, rn we can drop constraints for both,
// but if we don't drop `Misc` goals we would only drop the constraints for
// `FooBar` unless we track origins of root obligations.
fn func1<T: Foo + Bar>() {}
fn func2<T: FooBaz>() {}
```
[^1]: mostly, the actual rules are slightly different
r? ``@compiler-errors``
rustc_codegen_ssa: Don't drop `IncorrectCguReuseType` , make `rustc_expected_cgu_reuse` attr work
In [100753], `IncorrectCguReuseType` accidentally stopped being emitted by removing `diag.span_err(...)`. Begin emitting it again rather than just blindly dropping it, and adjust tests accordingly.
We assume that there are no bugs and that the currently actual CGU reuse is correct. If there are bugs, they will be discovered and fixed eventually, and the tests will then be updated.
[100753]: 706452eba7 (diff-048389738ddcbe0f9765291a29db1fed9a5f03693d4781cfb5aaa97ffb3c7f84)Closes#118972
Add check for possible CStr literals in pre-2021
Fixes [#118654](https://github.com/rust-lang/rust/issues/118654)
Adds information to errors caused by possible CStr literals in pre-2021.
The lexer separates `c"str"` into two tokens if the edition is less than 2021, which later causes an error when parsing. This error now has a more helpful message that directs them to information about editions. However, the user might also have written `c "str"` in a later edition, so to not confuse people who _are_ using a recent edition, I also added a note about whitespace.
We could probably figure out exactly which scenario has been encountered by examining spans and editions, but I figured it would be better not to overcomplicate the creation of the error too much.
This is my first code PR and I tried to follow existing conventions as much as possible, but I probably missed something, so let me know!
The old code used a heuristic to detect async functions and adjust their
coverage spans to produce better output. But there's no need to resort to a
heuristic when we can just check whether the current function is actually an
`async fn`.
Fix arm64e-apple-ios target
- [x] [Remove legacy `bitcode` defaults](https://github.com/rust-lang/rust/pull/117364)
- [x] Use LLVM features
Now we have warnings such as
```
'+paca' is not a recognized feature for this target (ignoring feature)
'+pacg' is not a recognized feature for this target (ignoring feature)
```
Because we should use LLVM features.
Yeet unnecessary param envs
We don't need to pass in param-envs around in the lexical region resolution code (or in `MatchAgainstFreshVars` in the solver), since it is only used to eval some consts in `structurally_relate_tys` which I removed.
This is in preparation for normalizing the outlives clauses in `ParamEnv` for the new trait solver.
r? lcnr
match lowering: Remove the `make_target_blocks` hack
This hack was introduced 4 years ago in [`a1d0266` (#60730)](a1d0266878) to improve LLVM optimization time, specifically noticed in the `encoding` benchmark. Measurements today indicate it is no longer needed.
r? `@matthewjasper`
Make exhaustiveness usable outside of rustc
With this PR, `rustc_pattern_analysis` compiles on stable (with the `stable` feature)! `rust-analyzer` will be able to use it to provide match-related diagnostics and refactors.
Two questions:
- Should I name the feature `nightly` instead of `rustc` for consistency with other crates? `rustc` makes more sense imo.
- `typed-arena` is an optional dependency but tidy made me add it to the allow-list anyway. Can I avoid that somehow?
r? `@compiler-errors`
Rollup of 4 pull requests
Successful merges:
- #119087 (Update books)
- #119091 (Use alias-eq in structural normalization)
- #119098 (Adjust the ignore-compare-mode-next-solver for hangs)
- #119100 (Add the function body span to StableMIR)
r? `@ghost`
`@rustbot` modify labels: rollup
