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
As I've been trying to replace a `Vec` with an `IndexVec`, having `last` exist on both but returning very different types makes the transition a bit awkward -- the errors are later, where you get things like "there's no `ty` method on `mir::Field`" rather than a more localized error like "hey, there's no `last` on `IndexVec`".
So I propose renaming `last` to `last_index` to help distinguish `Vec::last`, which returns an element, and `IndexVec::last_index`, which returns an index.
(Similarly, `Iterator::last` also returns an element, not an index.)
Convert all the crates that have had their diagnostic migration
completed (except save_analysis because that will be deleted soon and
apfloat because of the licensing problem).
Remove the `..` from the body, only a few invocations used it and it's
inconsistent with rust syntax.
Use `;` instead of `,` between consts. As the Rust syntax gods inteded.
Stabilize bench_black_box
This PR stabilize `feature(bench_black_box)`.
```rust
pub fn black_box<T>(dummy: T) -> T;
```
The FCP was completed in https://github.com/rust-lang/rust/issues/64102.
`@rustbot` label +T-libs-api -T-libs
On later stages, the feature is already stable.
Result of running:
rg -l "feature.let_else" compiler/ src/librustdoc/ library/ | xargs sed -s -i "s#\\[feature.let_else#\\[cfg_attr\\(bootstrap, feature\\(let_else\\)#"
Fix cloning from a BitSet with a different domain size
The previous implementation incorrectly assumed that the
number of words in a bit set is equal to the domain size.
The new implementation delegates to `Vec::clone_from` which
is specialized for `Copy` elements.
Fixes#99006.
The previous implementation incorrectly assumed that the
number of words in a bit set is equal to the domain size.
The new implementation delegates to `Vec::clone_from` which
is specialized for `Copy` elements.
Remove dereferencing of Box from codegen
Through #94043, #94414, #94873, and #95328, I've been fixing issues caused by Box being treated like a pointer when it is not a pointer. However, these PRs just introduced special cases for Box. This PR removes those special cases and instead transforms a deref of Box into a deref of the pointer it contains.
Hopefully, this is the end of the Box<T, A> ICEs.
`BitSet` related perf improvements
This commit makes two changes:
1. Changes `MaybeLiveLocals` to use `ChunkedBitSet`
2. Overrides the `fold` method for the iterator for `ChunkedBitSet`
I have local benchmarks verifying that each of these changes individually yield significant perf improvements to #96451 . I'm hoping this will be true outside of that context too. If that is not the case, I'll try to gate things on where they help as needed
r? `@nnethercote` who I believe was working on closely related things, cc `@tmiasko` because of the destprop pr
optimize `superset` method of `IntervalSet`
Given that intervals in the `IntervalSet` are sorted and strictly separated( it means the `end` of the previous interval will not be equal to the `start` of the next interval), we can reduce the complexity of the `superset` method from O(NMlogN) to O(2N) (N is the number of intervals and M is the length of each interval)
