wasm: Register the `relaxed-simd` target feature
This WebAssembly proposal is likely to reach stage 4 soon so this starts the support in Rust for the proposal by adding a target feature that can be enabled via attributes for the stdarch project to bind the intrinsics.
Implement partial support for non-lifetime binders
This implements support for non-lifetime binders. It's pretty useless currently, but I wanted to put this up so the implementation can be discussed.
Specifically, this piggybacks off of the late-bound lifetime collection code in `rustc_hir_typeck::collect::lifetimes`. This seems like a necessary step given the fact we don't resolve late-bound regions until this point, and binders are sometimes merged.
Q: I'm not sure if I should go along this route, or try to modify the earlier nameres code to compute the right bound var indices for type and const binders eagerly... If so, I'll need to rename all these queries to something more appropriate (I've done this for `resolve_lifetime::Region` -> `resolve_lifetime::ResolvedArg`)
cc rust-lang/types-team#81
r? `@ghost`
Rollup of 7 pull requests
Successful merges:
- #106347 (More accurate spans for arg removal suggestion)
- #108057 (Prevent some attributes from being merged with others on reexports)
- #108090 (`if $c:expr { Some($r:expr) } else { None }` =>> `$c.then(|| $r)`)
- #108092 (note issue for feature(packed_bundled_libs))
- #108099 (use chars instead of strings where applicable)
- #108115 (Do not ICE on unmet trait alias bounds)
- #108125 (Add new people to the compiletest review rotation)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Optimize `mk_region`
PR #107869 avoiding some interning under `mk_ty` by special-casing `Ty` variants with simple (integer) bodies. This PR does something similar for regions.
r? `@compiler-errors`
Remove save-analysis.
Most tests involving save-analysis were removed, but I kept a few where the `-Zsave-analysis` was an add-on to the main thing being tested, rather than the main thing being tested.
Closes https://github.com/rust-lang/rust/issues/43606
Fix index out of bounds ICE in `point_at_expr_source_of_inferred_type`
There might be more type params than args to a method call, which leads to an index out of bounds panic.
I'm not familiar with this code at all, so unsure whether this is the right fix, but at least this patch fixes#108042 for me (I hit the same issue with similar code)
Most tests involving save-analysis were removed, but I kept a few where
the `-Zsave-analysis` was an add-on to the main thing being tested,
rather than the main thing being tested.
For `x.py install`, the `rust-analysis` target has been removed.
For `x.py dist`, the `rust-analysis` target has been kept in a
degenerate form: it just produces a single file `reduced.json`
indicating that save-analysis has been removed. This is necessary for
rustup to keep working.
Closes#43606.
Don't ICE in `might_permit_raw_init` if reference is polymorphic
Emitting optimized MIR for a polymorphic function may require computing layout of a type that isn't (yet) known. This happens in the instcombine pass, for example. Let's fail gracefully in that condition.
cc `@saethlin`
fixes#107999
Don't suggest `#[doc(hidden)]` trait methods with matching return type
Fixes#107983, addressing the bad suggestion.
The test can probably be made more specific to this case, but I'm unsure how.
`@rustbot` label +A-diagnostics
Use `target` instead of `machine` for mir interpreter integer handling.
The naming of `machine` only makes sense from a mir interpreter internals perspective, but outside users talk about the `target` platform. As per https://github.com/rust-lang/rust/pull/108029#issuecomment-1429791015
r? `@RalfJung`
Avoid accessing HIR when it can be avoided
Experiment to see if it helps some incremental cases.
Will be rebased once https://github.com/rust-lang/rust/pull/107942 gets merged.
r? `@ghost`
This WebAssembly proposal is likely to reach stage 4 soon so this starts
the support in Rust for the proposal by adding a target feature that can
be enabled via attributes for the stdarch project to bind the
intrinsics.
Rollup of 7 pull requests
Successful merges:
- #105300 (rework min_choice algorithm of member constraints)
- #107163 (Remove some superfluous type parameters from layout.rs.)
- #107173 (Suggest the correct array length on mismatch)
- #107411 (Handle discriminant in DataflowConstProp)
- #107968 (Enable `#[thread_local]` on armv6k-nintendo-3ds)
- #108032 (Un📦ing the Resolver)
- #108060 (Revert to using `RtlGenRandom` as a fallback)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Handle discriminant in DataflowConstProp
cc ``@jachris``
r? ``@JakobDegen``
This PR attempts to extend the DataflowConstProp pass to handle propagation of discriminants. We handle this by adding 2 new variants to `TrackElem`: `TrackElem::Variant` for enum variants and `TrackElem::Discriminant` for the enum discriminant pseudo-place.
The difficulty is that the enum discriminant and enum variants may alias each another. This is the issue of the `Option<NonZeroUsize>` test, which is the equivalent of https://github.com/rust-lang/unsafe-code-guidelines/issues/84 with a direct write.
To handle that, we generalize the flood process to flood all the potentially aliasing places. In particular:
- any write to `(PLACE as Variant)`, either direct or through a projection, floods `(PLACE as OtherVariant)` for all other variants and `discriminant(PLACE)`;
- `SetDiscriminant(PLACE)` floods `(PLACE as Variant)` for each variant.
This implies that flooding is not hierarchical any more, and that an assignment to a non-tracked place may need to flood a tracked place. This is handled by `for_each_aliasing_place` which generalizes `preorder_invoke`.
As we deaggregate enums by putting `SetDiscriminant` last, this allows to propagate the value of the discriminant.
This refactor will allow to make https://github.com/rust-lang/rust/pull/107009 able to handle discriminants too.
Suggest the correct array length on mismatch
Fixes#107156
I wasn't able to find a way to get the `Span` for the actual array size unfortunately, so this suggestion can't be applied automatically.
``@rustbot`` label +A-diagnostics
rework min_choice algorithm of member constraints
See [this comment](https://github.com/rust-lang/rust/pull/105300#issuecomment-1384312743) for the description of the new algorithm.
Fixes#63033Fixes#104639
This uses a more general algorithm than #89056 that doesn't treat `'static` as a special case. It thus accepts more code. For example:
```rust
async fn test2<'s>(_: &'s u8, _: &'_ &'s u8, _: &'_ &'s u8) {}
```
I claim it's more correct as well because it fixes#104639.
cc ``@nikomatsakis`` ``@lqd`` ``@tmandry`` ``@eholk`` ``@chenyukang`` ``@oli-obk``
r? types
