Support for Fuchsia RISC-V target
Fuchsia is in the process of implementing the RISC-V support. This change implements the minimal Rust compiler support. The support for building runtime libraries will be implemented in follow up changes once Fuchsia SDK has the RISC-V support.
Remove `identity_future` indirection
This was previously needed because the indirection used to hide some unexplained lifetime errors, which it turned out were related to the `min_choice` algorithm.
Removing the indirection also solves a couple of cycle errors, large moves and makes async blocks support the `#[track_caller]`annotation.
Fixes https://github.com/rust-lang/rust/issues/104826.
Rollup of 9 pull requests
Successful merges:
- #108419 (Stabilize `atomic_as_ptr`)
- #108507 (use `as_ptr` to determine the address of atomics)
- #108607 (Don't use fd-lock on Solaris in bootstrap)
- #108830 (Treat projections with infer as placeholder during fast reject in new solver)
- #109055 (create `config::tests::detect_src_and_out` test for bootstrap)
- #109058 (Document BinOp::is_checkable)
- #109081 (simd-wide-sum test: adapt for LLVM 17 codegen change)
- #109083 (Update books)
- #109088 (Gracefully handle `#[target_feature]` on statics)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Gracefully handle `#[target_feature]` on statics
The was careful around not calling `fn_sig` on not-functions but well, it wasn't careful enough. This commit makes it a little more careful and also adds tests for a bunch more item kinds.
I was sadly not able to fully bless the test locally because I'm on an aarch64 machine but I hope some manual editing made it work 😅Fix#109079
Treat projections with infer as placeholder during fast reject in new solver
r? ``@lcnr``
Kind of a shame that we need to change all of the call sites for `for_each_relevant_impl`, etc. to pass an extra parameter. I guess I could have the "default" fn which calls a configurable fn?
use `as_ptr` to determine the address of atomics
The PR #107736 renamed atomic `as_mut_ptr` to `as_ptr`. Consequently, the futex implementation of the tier-3 platform `RutyHermit` has to use this new interface. In addition, this PR removes also an unused import.
Stabilize `atomic_as_ptr`
Fixes#66893
This stabilizes the `as_ptr` methods for atomics. The stabilization feature gate used here is `atomic_as_ptr` which supersedes `atomic_mut_ptr` to match the change in https://github.com/rust-lang/rust/pull/107736.
This needs FCP.
New stable API:
```rust
impl AtomicBool {
pub const fn as_ptr(&self) -> *mut bool;
}
impl AtomicI32 {
pub const fn as_ptr(&self) -> *mut i32;
}
// Includes all other atomic types
impl<T> AtomicPtr<T> {
pub const fn as_ptr(&self) -> *mut *mut T;
}
```
r? libs-api
``@rustbot`` label +needs-fcp
Revert "enable ThinLTO for rustc on x86_64-pc-windows-msvc dist builds"
This lead to a miscompilation in at least `char::is_whitespace` and probably in more unknown places.....
See #109067
This reverts commit 684663ed38, PR #103591.
The was careful around not calling `fn_sig` on not-functions but well,
it wasn't careful enough. This commit makes it a little more careful and
also adds tests for a bunch more item kinds.
Move `Option::as_slice` to an always-sound implementation
This approach depends on CSE to not have any branches or selects when the guessed offset is correct -- which it always will be right now -- but to also be *sound* (just less efficient) if the layout algorithms change such that the guess is incorrect.
The codegen test confirms that CSE handles this as expected, leaving the optimal codegen.
cc JakobDegen #108545
Remove `box_syntax`
r? `@Nilstrieb`
This removes the feature `box_syntax`, which allows the use of `box <expr>` to create a Box, and finalises removing use of the feature from the compiler. `box_patterns` (allowing the use of `box <pat>` in a pattern) is unaffected.
It also removes `ast::ExprKind::Box` - the only way to create a 'box' expression now is with the rustc-internal `#[rustc_box]` attribute.
As a temporary measure to help users move away, `box <expr>` now parses the inner expression, and emits a `MachineApplicable` lint to replace it with `Box::new`
Closes#49733
rustdoc: reduce allocs in FnDecl::inner_full_print
Instead of maintaining parallel buffers for both HTML and non-HTML output, follow the idiom from the rest of format.rs that f.alternate() == true means textual output. Also, add an argument to control line wrapping explicitly.
This allows the caller to render once with textual output and no line wrapping, to decide whether line wrapping should be applied in the final HTML output.
Also, remove some format! and " ".repeat calls, and remove a dependency on calling `String::replace` to switch from newlines to spaces.
This coincidentally fixes some minor bugs where the old code was undercounting the number of characters for a declaration in text mode.
Strengthen state tracking in const-prop
Some/many of the changes are replicated between both the const-prop lint and the const-prop optimization.
Behaviour changes:
- const-prop opt does not give a span to propagated values. This was useless as that span's primary purpose is to diagnose evaluation failure in codegen.
- we remove the `OnlyPropagateInto` mode. It was only used for function arguments, which are better modeled by a write before entry.
- the tracking of assignments and discriminants make clearer that we do nothing in `NoPropagation` mode or on indirect places.
Rollup of 8 pull requests
Successful merges:
- #108651 (Forbid the use of `#[target_feature]` on `main`)
- #109009 (rustdoc: use restricted Damerau-Levenshtein distance for search)
- #109026 (Introduce `Rc::into_inner`, as a parallel to `Arc::into_inner`)
- #109029 (Gate usages of `dyn*` and const closures in macros)
- #109031 (Rename `config.toml.example` to `config.example.toml`)
- #109032 (Use `TyCtxt::trait_solver_next` in some places)
- #109047 (typo)
- #109052 (Add eslint check for rustdoc-gui tester)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Rename `config.toml.example` to `config.example.toml`
This had bothered me for a while as it leads to bad (missing) syntax highlighting in most editors I've used, and `@jyn514` suggested I just make the change and that the compatibility concerns I had don't really matter.
I suspect it will be a contentious one, so will not be offended if the outcome of this is to close the PR.
Gate usages of `dyn*` and const closures in macros
We silently accepted `dyn*` and const closures in macros as long as they didn't expand to anything containing these experimental features, unlike other gated features such as `for<'a>` binders on closures, etc. Let's not do that, to make sure nobody begins relying on this.
Introduce `Rc::into_inner`, as a parallel to `Arc::into_inner`
Unlike `Arc`, `Rc` doesn't have the same race condition to avoid, but
maintaining an equivalent API still makes it easier to work with both
`Rc` and `Arc`.
rustdoc: use restricted Damerau-Levenshtein distance for search
Based on https://github.com/rust-lang/rust/pull/108200, for the same rationale.
> This replaces the existing Levenshtein algorithm with the Damerau-Levenshtein algorithm. This means that "ab" to "ba" is one change (a transposition) instead of two (a deletion and insertion). More specifically, this is a restricted implementation, in that "ca" to "abc" cannot be performed as "ca" → "ac" → "abc", as there is an insertion in the middle of a transposition. I believe that errors like that are sufficiently rare that it's not worth taking into account.
Before this change, searching [`prinltn!`] listed `print!` first, followed by `println!`. With this change, `println!` matches more closely.
[`prinltn!`]: https://doc.rust-lang.org/nightly/std/?search=prinltn!
