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Signed-off-by: Emmet Horgan <horgan098@gmail.com>
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style)"
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This updates mdbook to 0.4.52, which includes a number of fixes and
enhancements since 0.4.48.
Changelog: https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-0452
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stabilization_guide: fix macro name and syntax in gating example
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dates: refresh diagnostics/ and tests/ annotated dates to August 2025
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dates: refresh type system & traits date annotations to Aug/2025
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dates: refresh query-system date annotations to 2025-08 (preserve style)
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preserve local style
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local style
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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: a1dbb443527bd126452875eb5d5860c1d001d761
Filtered ref: c2339048a82c55166f9b9ee83fd618be252a6e23
This merge was created using https://github.com/rust-lang/josh-sync.
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This updates the rust-version file to a1dbb443527bd126452875eb5d5860c1d001d761.
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Suggest using `@bors try jobs=...`
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Add more tests for the parallel rustc
At the moment, the parallel frontend test cases are severely lacking. Althought some reported issues have been resolved, they haven't been added into the tests.
This PR arranges the resolved ICE issues and adds tests for them.
Whether it is worthwhile to add a separate test suite for the paralel frontend still requires futher discussion. But we are trying coveraging issues being resolved through capability of the existing UI test suite.
Discussion: [Zulip](https://rust-lang.zulipchat.com/#narrow/channel/233931-t-compiler.2Fmajor-changes/topic/Proposal.20for.20a.20dedicated.20test.20suite.20for.20t.E2.80.A6.20compiler-team.23906)
Related issues:
- rust-lang/rust#120760
- rust-lang/rust#124423 fixed by rust-lang/rust#140358
- rust-lang/rust#127971 fxied by rust-lang/rust#140358
- rust-lang/rust#120601 fixed by rust-lang/rust#127311
cc `@jieyouxu`
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rustc-dev-guide subtree update
Subtree update of `rustc-dev-guide` to https://github.com/rust-lang/rustc-dev-guide/commit/c22150808bc96df8c8666d2f4b89cbab10e1ce0d.
Created using https://github.com/rust-lang/josh-sync.
r? ```@ghost```
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Signed-off-by: xihuwenhua <xihuwenhua@outlook.com>
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Update bootstrapping docs to account for new stage meanings
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Losslessly optimize PNG files
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add gpu device side instructions
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Trace some basic I/O operations in bootstrap
When working on removing the rmeta sysroot copies, it is quite difficult to figure out *why* was did a certain file appear in a given directory. This should help with that a bit.
r? `@jieyouxu`
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Losslessly optimizes all of the PNG files in the repo. Done with:
```
oxipng -o max -a -s
oxipng -o max --zopfli -a -s
```
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This removes the #[no_sanitize] attribute, which was behind an unstable
feature named no_sanitize. Instead, we introduce the sanitize attribute
which is more powerful and allows to be extended in the future (instead
of just focusing on turning sanitizers off).
This also makes sanitize(kernel_address = ..) attribute work with
-Zsanitize=address
To do it the same as how clang disables address sanitizer, we now
disable ASAN on sanitize(kernel_address = "off") and KASAN on
sanitize(address = "off").
The same was added to clang in https://reviews.llvm.org/D44981.
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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: 425a9c0a0e365c0b8c6cfd00c2ded83a73bed9a0
Filtered ref: 26b9fd24259f4fc5fd7634a99dd6dda2821fb2d0
This merge was created using https://github.com/rust-lang/josh-sync.
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This updates the rust-version file to 425a9c0a0e365c0b8c6cfd00c2ded83a73bed9a0.
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Implement autodiff using intrinsics
This PR aims to move autodiff logic to `autodiff` intrinsic. Allowing us to delete a great part of our frontend code and overall, simplify the compilation pipeline of autodiff functions.
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Improve tracing in bootstrap
I was annoyed that bootstrap had like 5 separate ways of debugging/tracing/profiling, and it was hard for me to understand how are individual steps executed. This PR tries to unify severla things behind `BOOTSTRAP_TRACING`, and improve tracing/profiling in general:
- All generated tracing outputs are now stored in a single directory to make it easier to examine them, plus bootstrap prepares a `latest` symlink to the latest generated tracing output directory for convenience.
- All executed spans are now logged automatically (without requiring usage of `#[tracing::instrument]`).
- A custom span/event formatter was implemented, to provide domain-specific output (like location of executed commands or spans) and hopefully also to reduce visual clutter.
- `tracing_forest` was removed. While it did some useful postprocessing, it didn't expose enough information for making the dynamic step spans work.
- You can now explicitly log steps (`STEP=info`) and/or commands (`COMMAND=info`), to have more granular control over what gets logged.
- `print-step-timings` also show when a step starts its execution (not just when it ends it), so that when some step fails in CI, we can actually see what step it was (before we would only see the end of the previous step).
- The rustc-dev-guide page on debugging/profiling bootstrap was updated.
There are still some things that work outside of tracing (`print-step-timings` and `dump-bootstrap-shims`), but I think that for now this improvement is good enough.
I removed the `> step`, `< step` verbose output, because I found it unusable, as verbose bootstrap output also enables verbose Cargo output, and then you simply drown in too much data, and because I think that the new tracing system makes it obsolete (although it does require recompilation with the `tracing` feature). If you want to keep it, happy to revert 690c781475acb890f33d928186bdaea9ef179330. And the information about cached steps is now also shown in the Graphviz step dependency graph.
We can modify the tracing output however we want, as we now implement it ourselves. Notably, we could also show exit logs for step spans, currently I only show enter spans. Maybe creating indents for each executed nested command is also not needed. Happy to hear feedback!
Some further improvements could be to print step durations, if we decide to also log step exit events. We could also try to enable tracing in CI logs, but it might be too verbose.
Best reviewed commit-by-commit.
r? ``@jieyouxu``
CC ``@Shourya742``
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Consolidate stage directories and group logs in bootstrap
My post-stage-0-redesign bootstrap fixes aren't done yet, but I think that enough steps have been migrated to the new system that it makes sense to actually modify the directories on disk, and what gets printed when bootstrap runs, so that it actually corresponds to the new system. Before, the printed stages didn't always make sense.
This PR:
- Fixes the numbering of `stageN` directories in the build directory. It was not corresponding to the correct stages before; notice that I did not modify `bootstrap/README.md`, as it was essentially describing what happens after this PR (first commit).
- Unifies all steps that output a build group to use the `Builder::msg` method. It's probably not the final stage, and some of the test steps might not be fully accurate yet, because I didn't fix test step numbering yet, but I think that it's a clear improvement from before, and now that everything uses the same method, we can easily make changes across the board, to ensure that it stays unified (second commit).
r? `@jieyouxu`
try-job: dist-x86_64-msvc
try-job: dist-x86_64-linux
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see https://github.com/rust-lang/rust/pull/145253 for reference.
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