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Rollup of 4 pull requests #128332
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Rollup of 4 pull requests #128332
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In several cases this avoids the need to clone the underlying pattern, and then print the clone later.
The tag has been released today, and since the original hash we had in the Rust CI (which was ~v6.10-rc1), we have accumulated a fair amount of changes and new code. In particular, v6.11-rc1 is the first Linux tag where the kernel is supporting an actual minimum Rust version (1.78.0), rather than a single version. Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This hides the fact that we print `WitnessPat` by converting it to `thir::Pat` and then printing that.
This gives a clearer view of the (diagnostic) code that expects to be able to print THIR patterns, and makes it possible to experiment with requiring some kind of context (for ID lookup) when printing patterns.
This change unifies the `Step::run_make` logic and improves it by skipping std specific crates for no_std targets. Signed-off-by: onur-ozkan <work@onurozkan.dev>
Since we now handle library crates properly, there's no need to panic for `no_std` targets anymore. `x doc library` now generates documentation for the `alloc` crate from standard library. Signed-off-by: onur-ozkan <work@onurozkan.dev>
`crates` field is handled in the `Step::make_run` just like in any other `Std` implementation, so we don't need to resolve them in `Std::new`. Signed-off-by: onur-ozkan <work@onurozkan.dev>
Signed-off-by: onur-ozkan <work@onurozkan.dev>
…rk-Simulacrum handle no_std targets on std builds This PR unifies the `Step::run_make` logic and improves it by skipping std specific crates for no_std targets. In addition, since we now handle library crates properly, bootstrap is capable of running `x doc library` even for no_std targets as it is able to generate documentation for `alloc` crate from the standard library. Resolves rust-lang#128027 cc `@ChrisDenton`
Optimize empty case in Vec::retain While profiling some code that happens to call Vec::retain() in a tight loop, I noticed more runtime than expected in retain, even in a bench case where the vector was always empty. When I wrapped my call to retain in `if !myvec.is_empty()` I saw faster execution compared with doing retain on an empty vector. On closer inspection, Vec::retain is doing set_len(0) on itself even when the vector is empty, and then resetting the length again in BackshiftOnDrop::drop. Unscientific screengrab of a flamegraph illustrating how we end up spending time in set_len and drop: ![image](https://github.com/user-attachments/assets/ebc72ace-84a0-4432-9b6f-1b3c96d353ba)
…eril Isolate the diagnostic code that expects `thir::Pat` to be printable Currently, `thir::Pat` implements `fmt::Display` (and `IntoDiagArg`) directly, for use by a few diagnostics. That makes it tricky to experiment with alternate representations for THIR patterns, because the patterns currently need to be printable on their own. That immediately rules out possibilities like storing subpatterns as a `PatId` index into a central list (instead of the current directly-owned `Box<Pat>`). This PR therefore takes an incremental step away from that obstacle, by removing `thir::Pat` from diagnostic structs in `rustc_pattern_analysis`, and hiding the pattern-printing process behind a single public `Pat::to_string` method. Doing so makes it easier to identify and update the code that wants to print patterns, and gives a place to pass in additional context in the future if necessary. --- I'm currently not sure whether switching over to `PatId` is actually desirable or not, but I think this change makes sense on its own merits, by reducing the coupling between `thir::Pat` and the pattern-analysis error types.
CI: move RFL job forward to v6.11-rc1 The tag has been released today, and since the original hash we had in the Rust CI (which was ~v6.10-rc1), we have accumulated a fair amount of changes and new code. In particular, v6.11-rc1 is the first Linux tag where the kernel is supporting an actual minimum Rust version (1.78.0), rather than a single version. --- Let's try to do the move independently first. r? `@Kobzol` try-job: x86_64-rust-for-linux
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Jul 29, 2024
@bors r+ rollup=never p=4 |
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Jul 29, 2024
#128234 says "optimize", shouldn't be rolled up? |
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A-testsuite
Area: The testsuite used to check the correctness of rustc
rollup
A PR which is a rollup
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Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-compiler
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Successful merges:
thir::Pat
to be printable #128304 (Isolate the diagnostic code that expectsthir::Pat
to be printable)r? @ghost
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