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Represent `hir::TraitBoundModifiers` as distinct parts in HIR
Stop squashing distinct `polarity` and `constness` into a single `hir::TraitBoundModifier`.
This PR doesn't attempt to handle all the corner cases correctly, since the old code certainly did not either; but it should be much easier for, e.g., rustc devs working on diagnostics, or clippy devs, to actually handle constness and polarity correctly.
try-job: x86_64-gnu-stable
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better default capacity for str::replace
Adds smarter capacity for str::replace in cases where we know that the output will be at least as long as the original string.
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x86-32 float return for 'Rust' ABI: treat all float types consistently
This helps with https://github.com/rust-lang/rust/issues/131819: for our own ABI on x86-32, we want to *never* use the float registers. The previous logic only considered F32 and F64, but skipped F16 and F128. So I made the logic just apply to all float types.
try-job: i686-gnu
try-job: i686-gnu-nopt
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Rollup of 8 pull requests
Successful merges:
- #125205 (Fixup Windows verbatim paths when used with the `include!` macro)
- #131049 (Validate args are correct for `UnevaluatedConst`, `ExistentialTraitRef`/`ExistentialProjection`)
- #131549 (Add a note for `?` on a `impl Future<Output = Result<..>>` in sync function)
- #131731 (add `TestFloatParse` to `tools.rs` for bootstrap)
- #131732 (Add doc(plugins), doc(passes), etc. to INVALID_DOC_ATTRIBUTES)
- #132006 (don't stage-off to previous compiler when CI rustc is available)
- #132022 (Move `cmp_in_dominator_order` out of graph dominator computation)
- #132033 (compiletest: Make `line_directive` return a `DirectiveLine`)
r? `@ghost`
`@rustbot` modify labels: rollup
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compiletest: Make `line_directive` return a `DirectiveLine`
This reduces the need to juggle raw tuples, and opens up the possibility of moving more parts of directive parsing into `line_directive`.
In order to make the main change possible, this PR also (partly) separates the debugger-command parsing from the main directive parser. That cleanup removes support for `[rev]` in debugger commands, which is not used by any tests.
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Move `cmp_in_dominator_order` out of graph dominator computation
Dominator-order information is only needed for coverage graphs, and is easy enough to collect by just traversing the graph again.
This avoids wasted work when computing graph dominators for any other purpose.
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don't stage-off to previous compiler when CI rustc is available
Resolves the 4th item in [Tracking Issue for download-rustc improvements](https://github.com/rust-lang/rust/issues/131744).
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Add doc(plugins), doc(passes), etc. to INVALID_DOC_ATTRIBUTES
This fixes #82824.
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add `TestFloatParse` to `tools.rs` for bootstrap
add TestFloatParse to tools for bootstrap, I am not sure this is what the issue https://github.com/rust-lang/rust/issues/128012 discussion wants.
try-job: aarch64-apple
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Add a note for `?` on a `impl Future<Output = Result<..>>` in sync function
It's confusing to `?` a future of a result in a sync function. We have a suggestion to `.await` it if we're in an async function, but not a sync function. Note that this is the case for sync functions, at least.
Let's be a bit more vague about a fix, since it's somewhat context dependent. For example, you could block on it, or you could make your function asynchronous. 🤷
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Validate args are correct for `UnevaluatedConst`, `ExistentialTraitRef`/`ExistentialProjection`
For the `Existential*` ones, we have to do some adjustment to the args list to deal with the missing `Self` type, so we introduce a `debug_assert_existential_args_compatible` function to the interner as well.
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Fixup Windows verbatim paths when used with the `include!` macro
On Windows, the following code can fail if the `OUT_DIR` environment variable is a [verbatim path](https://doc.rust-lang.org/std/path/enum.Prefix.html) (i.e. begins with `\\?\`):
```rust
include!(concat!(env!("OUT_DIR"), "/src/repro.rs"));
```
This is because verbatim paths treat `/` literally, as if it were just another character in the file name.
The good news is that the standard library already has code to fix this. We can simply use `components` to normalize the path so it works as intended.
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terminology: #[feature] *enables* a feature (instead of "declaring" or "activating" it)
Mostly, we currently call a feature that has a corresponding `#[feature(name)]` attribute in the current crate a "declared" feature. I think that is confusing as it does not align with what "declaring" usually means. Furthermore, we *also* refer to `#[stable]`/`#[unstable]` as *declaring* a feature (e.g. in [these diagnostics](https://github.com/rust-lang/rust/blob/f25e5abea229a6b6aa77b45e21cb784e785c6040/compiler/rustc_passes/messages.ftl#L297-L301)), which aligns better with what "declaring" usually means. To make things worse, the functions `tcx.features().active(...)` and `tcx.features().declared(...)` both exist and they are doing almost the same thing (testing whether a corresponding `#[feature(name)]` exists) except that `active` would ICE if the feature is not an unstable lang feature. On top of this, the callback when a feature is activated/declared is called `set_enabled`, and many comments also talk about "enabling" a feature.
So really, our terminology is just a mess.
I would suggest we use "declaring a feature" for saying that something is/was guarded by a feature (e.g. `#[stable]`/`#[unstable]`), and "enabling a feature" for `#[feature(name)]`. This PR implements that.
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This reduces the need to juggle raw tuples, and opens up the possibility of
moving more parts of directive parsing into `line_directive`.
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This also removes unused support for `[rev]` in debugger commands, and makes
breakpoint detection slightly more sensible.
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Dominator-order information is only needed for coverage graphs, and is easy
enough to collect by just traversing the graph again.
This avoids wasted work when computing graph dominators for any other purpose.
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Rollup of 3 pull requests
Successful merges:
- #131918 (coverage: Make counter creation handle node/edge counters more uniformly)
- #132021 (nuttx.md: typo)
- #132029 (Subtree update of `rust-analyzer`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Subtree update of `rust-analyzer`
r? `@ghost`
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nuttx.md: typo
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coverage: Make counter creation handle node/edge counters more uniformly
Similar to #130380, this is another round of small improvements informed by my ongoing attempts to overhaul coverage counter creation.
One of the big benefits is getting rid of the awkward special-case that would sometimes attach an edge counter to a node instead. That was needed by the code that chooses which out-edge should be given a counter expression, but we can avoid that by making the corresponding check a little smarter.
I've also renamed several things to be simpler and more consistent, which should help with future changes.
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minor: sync from downstream
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assertions
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"activating" it)
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Rollup of 6 pull requests
Successful merges:
- #130432 (rust_for_linux: -Zregparm=<N> commandline flag for X86 (#116972))
- #131697 (`rt::Argument`: elide lifetimes)
- #131807 (Always specify `llvm_abiname` for RISC-V targets)
- #131954 (shave 150ms off bootstrap)
- #132015 (Move const trait tests from `ui/rfcs/rfc-2632-const-trait-impl` to `ui/traits/const-traits`)
- #132017 (Update triagebot.toml)
r? `@ghost`
`@rustbot` modify labels: rollup
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Update triagebot.toml
Update the list of reviewers after updating the team here: https://github.com/rust-lang/team/pull/1555
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Move const trait tests from `ui/rfcs/rfc-2632-const-trait-impl` to `ui/traits/const-traits`
I found the old test directory to be somewhat long to name, and I don't think it's necessary to put an experimental implementation's tests under an rfc which is closed.
r? fee1-dead
Breaking this out of #131985 so that PR doesn't touch 300 files.
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shave 150ms off bootstrap
This starts `git` commands inside `GitInfo`and the submodule updates in parallel. Git should already perform internal locking in cases where it needs to serialize a modification.
```
OLD
Benchmark #1: ./x check core
Time (mean ± σ): 608.7 ms ± 4.4 ms [User: 368.3 ms, System: 455.1 ms]
Range (min … max): 602.3 ms … 618.8 ms 10 runs
NEW
Benchmark #1: ./x check core
Time (mean ± σ): 462.8 ms ± 2.6 ms [User: 350.2 ms, System: 485.1 ms]
Range (min … max): 457.5 ms … 465.6 ms 10 runs
```
This should help with the rust-analyzer setup which issues many individual `./x check` calls. There's more that could be done but these were the lowest-hanging fruits that I saw.
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Always specify `llvm_abiname` for RISC-V targets
For RISC-V targets, when `llvm_abiname` is not specified LLVM will infer the ABI from the target features, causing #116344 to occur. This PR adds the correct `llvm_abiname` to all RISC-V targets where it is missing (which are all soft-float targets), and adds a test to prevent future RISC-V targets from accidentally omitting `llvm_abiname`. The only affect of this PR is that `-Ctarget-feature=+f` (or similar) will no longer affect the ABI on the modified targets.
<!-- homu-ignore:start -->
r? `@RalfJung`
<!--- homu-ignore:end -->
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`rt::Argument`: elide lifetimes
`@rustbot` label +C-cleanup
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rust_for_linux: -Zregparm=<N> commandline flag for X86 (#116972)
Command line flag `-Zregparm=<N>` for X86 (32-bit) for rust-for-linux: https://github.com/rust-lang/rust/issues/116972
Implemented in the similar way as fastcall/vectorcall support (args are marked InReg if fit).
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r=compiler-errors
make unsupported_calling_conventions a hard error
This has been a future-compat lint (not shown in dependencies) since Rust 1.55, released 3 years ago. Hopefully that was enough time so this can be made a hard error now. Given that long timeframe, I think it's justified to skip the "show in dependencies" stage. There were [not many crates hitting this](https://github.com/rust-lang/rust/pull/86231#issuecomment-866300943) even when the lint was originally added.
This should get cratered, and I assume then it needs a t-compiler FCP. (t-compiler because this looks entirely like an implementation oversight -- for the vast majority of ABIs, we already have a hard error, but some were initially missed, and we are finally fixing that.)
Fixes https://github.com/rust-lang/rust/pull/87678
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Dont consider predicates that may hold as impossible in `is_impossible_associated_item`
Use infer vars to account for ambiguities when considering if methods are impossible to instantiate for a given self type. Also while we're at it, let's use the new trait solver instead of `evaluate` since this is used in rustdoc.
r? lcnr
Fixes #131839
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(ci) Update macOS Xcode to 15
This updates the macOS builders to Xcode 15. The aarch64 images will be removing Xcode 14 and 16 very soon (https://github.com/actions/runner-images/issues/10703), so we will need to make the switch to continue operating. The linked issue also documents GitHub's new policy for how they will be updating Xcode in the future. Also worth being aware of is the future plans for x86 runners documented in https://github.com/actions/runner-images/issues/9255 and https://github.com/actions/runner-images/issues/10686, which will impact our future upgrade behaviors.
I decided to also update the Xcode in the x86_64 runners, even though they are not being removed. It felt better to me to have all macOS runners on the same (major) version of Xcode. However, note that the x86_64 runners do not have the latest version of 15 (15.4), so I left them at 15.2 (which is currently the default Xcode of the runner).
Xcode 15 was previously causing problems (see #121058) which seem to be resolved now. `@bjorn3` fixed the `invalid r_symbolnum` issue with cranelift. The issue with clang failing to link seems to be fixed, possibly by the update of the pre-built LLVM from 14 to llvm 15 in https://github.com/rust-lang/rust/pull/124850, or an update in our source version of LLVM. I have run some try builds and at least LLVM seems to build (I did not run any tests).
Closes #121058
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For reasons I don't understand, lldb in Xcode 15 no longer prints objects as:
(long) $0 = 19
instead, it is printing them as:
(long) 19
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feat: better completions for extern blcoks
This PR refactors `add_keywords` (making it much clearer!) and enhances completion for `extern` blocks.
It is recommended to reviewing the changes in order of the commits:
- The first commit (f3c4dde0a4917a2bac98605cc045eecfb4d69872) doesn’t change any logic but refactors parts of the `add_keywords` function and adds detailed comments.
- The second commit (5dcc1ab649bf8a49cadf006d620871b12f093a2f) improves completion for `extern` kw and extern blocks.
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Rollup of 7 pull requests
Successful merges:
- #130350 (stabilize Strict Provenance and Exposed Provenance APIs)
- #131737 (linkchecker: add a reminder on broken links to add new/renamed pages to `SUMMARY.md` for mdBooks)
- #131991 (test: Add test for trait in FQS cast, issue #98565)
- #131997 (Make `rustc_abi` compile on stable again)
- #131999 (Improve test coverage for `unit_bindings` lint)
- #132001 (fix coherence error for very large tuples™)
- #132003 (update ABI compatibility docs for new option-like rules)
r? `@ghost`
`@rustbot` modify labels: rollup
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