Merge from rustc

jieyouxu · jieyouxu · commit 3ca2a42b52aa · 2025-03-13T15:20:11.000+08:00
diff --git a/src/building/optimized-build.md b/src/building/optimized-build.md
@@ -126,4 +126,4 @@ Here is an example of how can `opt-dist` be used locally (outside of CI):
 [`Environment`]: https://github.com/rust-lang/rust/blob/ee451f8faccf3050c76cdcd82543c917b40c7962/src/tools/opt-dist/src/environment.rs#L5
 
 > Note: if you want to run the actual CI pipeline, instead of running `opt-dist` locally,
-> you can execute `python3 src/ci/github-actions/ci.py run-local dist-x86_64-linux`.
+> you can execute `cargo run --manifest-path src/ci/citool/Cargo.toml run-local dist-x86_64-linux`.
diff --git a/src/hir.md b/src/hir.md
@@ -139,12 +139,12 @@ defined in the map. By matching on this, you can find out what sort of
 node the `HirId` referred to and also get a pointer to the data
 itself. Often, you know what sort of node `n` is – e.g. if you know
 that `n` must be some HIR expression, you can do
-[`tcx.hir().expect_expr(n)`][expect_expr], which will extract and return the
+[`tcx.hir_expect_expr(n)`][expect_expr], which will extract and return the
 [`&hir::Expr`][Expr], panicking if `n` is not in fact an expression.
 
 [find]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/hir/map/struct.Map.html#method.find
 [`Node`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir/hir/enum.Node.html
-[expect_expr]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/hir/map/struct.Map.html#method.expect_expr
+[expect_expr]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.TyCtxt.html#method.expect_expr
 [Expr]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir/hir/struct.Expr.html
 
 Finally, you can use the HIR map to find the parents of nodes, via
diff --git a/src/parallel-rustc.md b/src/parallel-rustc.md
@@ -46,10 +46,8 @@ are implemented differently depending on whether `parallel-compiler` is true.
 
 | data structure                   | parallel                                            | non-parallel |
 | -------------------------------- | --------------------------------------------------- | ------------ |
-| OnceCell                         | std::sync::OnceLock                                 | std::cell::OnceCell |
 | Lock\<T> | (parking_lot::Mutex\<T>) | (std::cell::RefCell) |
 | RwLock\<T> | (parking_lot::RwLock\<T>) | (std::cell::RefCell) |
-| MTRef<'a, T> | &'a T | &'a mut T |
 | MTLock\<T> | (Lock\<T>) | (T) |
 | ReadGuard | parking_lot::RwLockReadGuard | std::cell::Ref |
 | MappedReadGuard | parking_lot::MappedRwLockReadGuard | std::cell::Ref |
diff --git a/src/tests/ci.md b/src/tests/ci.md
@@ -28,7 +28,7 @@ Our CI is primarily executed on [GitHub Actions], with a single workflow defined
 in [`.github/workflows/ci.yml`], which contains a bunch of steps that are
 unified for all CI jobs that we execute. When a commit is pushed to a
 corresponding branch or a PR, the workflow executes the
-[`src/ci/github-actions/ci.py`] script, which dynamically generates the specific CI
+[`src/ci/citool`] crate, which dynamically generates the specific CI
 jobs that should be executed. This script uses the [`jobs.yml`] file as an
 input, which contains a declarative configuration of all our CI jobs.
 
@@ -133,29 +133,37 @@ There are several use-cases for try builds:
   Again, a working compiler build is needed for this, which can be produced by
   the [dist-x86_64-linux] CI job.
 - Run a specific CI job (e.g. Windows tests) on a PR, to quickly test if it
-  passes the test suite executed by that job. You can select which CI jobs will
-  be executed in the try build by adding up to 10 lines containing `try-job:
-  <name of job>` to the PR description. All such specified jobs will be executed
-  in the try build once the `@bors try` command is used on the PR. If no try
-  jobs are specified in this way, the jobs defined in the `try` section of
-  [`jobs.yml`] will be executed by default.
+  passes the test suite executed by that job.
+
+You can select which CI jobs will
+be executed in the try build by adding lines containing `try-job:
+<job pattern>` to the PR description. All such specified jobs will be executed
+in the try build once the `@bors try` command is used on the PR. If no try
+jobs are specified in this way, the jobs defined in the `try` section of
+[`jobs.yml`] will be executed by default.
+
+Each pattern can either be an exact name of a job or a glob pattern that matches multiple jobs,
+for example `*msvc*` or `*-alt`. You can start at most 20 jobs in a single try build. When using
+glob patterns, you might want to wrap them in backticks (`` ` ``) to avoid GitHub rendering
+the pattern as Markdown.
 
 > **Using `try-job` PR description directives**
 >
-> 1. Identify which set of try-jobs (max 10) you would like to exercise. You can
+> 1. Identify which set of try-jobs you would like to exercise. You can
 >    find the name of the CI jobs in [`jobs.yml`].
 >
-> 2. Amend PR description to include (usually at the end of the PR description)
->    e.g.
+> 2. Amend PR description to include a set of patterns (usually at the end
+>    of the PR description), for example:
 >
 >    ```text
 >    This PR fixes #123456.
 >
 >    try-job: x86_64-msvc
 >    try-job: test-various
+>    try-job: `*-alt`
 >    ```
 >
->    Each `try-job` directive must be on its own line.
+>    Each `try-job` pattern must be on its own line.
 >
 > 3. Run the prescribed try jobs with `@bors try`. As aforementioned, this
 >    requires the user to either (1) have `try` permissions or (2) be delegated
@@ -299,7 +307,7 @@ platform’s custom [Docker container]. This has a lot of advantages for us:
 - We can avoid reinstalling tools (like QEMU or the Android emulator) every time
   thanks to Docker image caching.
 - Users can run the same tests in the same environment locally by just running
-  `python3 src/ci/github-actions/ci.py run-local <job-name>`, which is awesome to debug failures. Note that there are only linux docker images available locally due to licensing and
+  `cargo run --manifest-path src/ci/citool/Cargo.toml run-local <job-name>`, which is awesome to debug failures. Note that there are only linux docker images available locally due to licensing and
   other restrictions.
 
 The docker images prefixed with `dist-` are used for building artifacts while
@@ -443,7 +451,7 @@ this:
 [GitHub Actions]: https://github.com/rust-lang/rust/actions
 [`jobs.yml`]: https://github.com/rust-lang/rust/blob/master/src/ci/github-actions/jobs.yml
 [`.github/workflows/ci.yml`]: https://github.com/rust-lang/rust/blob/master/.github/workflows/ci.yml
-[`src/ci/github-actions/ci.py`]: https://github.com/rust-lang/rust/blob/master/src/ci/github-actions/ci.py
+[`src/ci/citool`]: https://github.com/rust-lang/rust/blob/master/src/ci/citool
 [rust-lang-ci]: https://github.com/rust-lang-ci/rust/actions
 [bors]: https://github.com/bors
 [homu]: https://github.com/rust-lang/homu
diff --git a/src/tests/compiletest.md b/src/tests/compiletest.md
@@ -74,8 +74,7 @@ The following test suites are available, with links for more information:
 
 ### General purpose test suite
 
-[`run-make`](#run-make-tests) are general purpose tests using Rust programs (or
-Makefiles (legacy)).
+[`run-make`](#run-make-tests) are general purpose tests using Rust programs.
 
 ### Rustdoc test suites
 
@@ -396,14 +395,6 @@ your test, causing separate files to be generated for 32bit and 64bit systems.
 
 ### `run-make` tests
 
-> **Note on phasing out `Makefile`s**
-> 
-> We are planning to migrate all existing Makefile-based `run-make` tests
-> to Rust programs. You should not be adding new Makefile-based `run-make`
-> tests.
->
-> See <https://github.com/rust-lang/rust/issues/121876>.
-
 The tests in [`tests/run-make`] are general-purpose tests using Rust *recipes*,
 which are small programs (`rmake.rs`) allowing arbitrary Rust code such as
 `rustc` invocations, and is supported by a [`run_make_support`] library. Using
@@ -424,10 +415,9 @@ Compiletest directives like `//@ only-<target>` or `//@ ignore-<target>` are
 supported in `rmake.rs`, like in UI tests. However, revisions or building
 auxiliary via directives are not currently supported.
 
-Two `run-make` tests are ported over to Rust recipes as examples:
-
-- <https://github.com/rust-lang/rust/tree/master/tests/run-make/CURRENT_RUSTC_VERSION>
-- <https://github.com/rust-lang/rust/tree/master/tests/run-make/a-b-a-linker-guard>
+`rmake.rs` and `run-make-support` may *not* use any nightly/unstable features,
+as they must be compilable by a stage 0 rustc that may be a beta or even stable
+rustc.
 
 #### Quickly check if `rmake.rs` tests can be compiled
 
@@ -481,20 +471,6 @@ Then add a corresponding entry to `"rust-analyzer.linkedProjects"`
 ],
 ```
 
-#### Using Makefiles (legacy)
-
-<div class="warning">
-You should avoid writing new Makefile-based `run-make` tests.
-</div>
-
-Each test should be in a separate directory with a `Makefile` indicating the
-commands to run.
-
-There is a [`tools.mk`] Makefile which you can include which provides a bunch of
-utilities to make it easier to run commands and compare outputs. Take a look at
-some of the other tests for some examples on how to get started.
-
-[`tools.mk`]: https://github.com/rust-lang/rust/blob/master/tests/run-make/tools.mk
 [`tests/run-make`]: https://github.com/rust-lang/rust/tree/master/tests/run-make
 [`run_make_support`]: https://github.com/rust-lang/rust/tree/master/src/tools/run-make-support
 
diff --git a/src/tests/directives.md b/src/tests/directives.md
@@ -6,10 +6,7 @@
 FIXME(jieyouxu) completely revise this chapter.
 -->
 
-Directives are special comments that tell compiletest how to build and interpret
-a test. They must appear before the Rust source in the test. They may also
-appear in `rmake.rs` or legacy Makefiles for [run-make
-tests](compiletest.md#run-make-tests).
+Directives are special comments that tell compiletest how to build and interpret a test. They must appear before the Rust source in the test. They may also appear in `rmake.rs` [run-make tests](compiletest.md#run-make-tests).
 
 They are normally put after the short comment that explains the point of this
 test. Compiletest test suites use `//@` to signal that a comment is a directive.
@@ -142,6 +139,7 @@ Some examples of `X` in `ignore-X` or `only-X`:
 - Pointer width: `32bit`, `64bit`
 - Endianness: `endian-big`
 - Stage: `stage1`, `stage2`
+- Binary format: `elf`
 - Channel: `stable`, `beta`
 - When cross compiling: `cross-compile`
 - When [remote testing] is used: `remote`
@@ -220,8 +218,6 @@ The following directives will check LLVM support:
     [`aarch64-gnu-debug`]), which only runs a
     subset of `run-make` tests. Other tests with this directive will not
     run at all, which is usually not what you want.
-  - Notably, the [`aarch64-gnu-debug`] CI job *currently* only runs `run-make`
-    tests which additionally contain `clang` in their test name.
 
 See also [Debuginfo tests](compiletest.md#debuginfo-tests) for directives for
 ignoring debuggers.
diff --git a/src/tests/docker.md b/src/tests/docker.md
@@ -53,6 +53,15 @@ Some additional notes about using the interactive mode:
   containers. With the container name, run `docker exec -it <CONTAINER>
   /bin/bash` where `<CONTAINER>` is the container name like `4ba195e95cef`.
 
+The approach described above is a relatively low-level interface for running the Docker images
+directly. If you want to run a full CI Linux job locally with Docker, in a way that is as close to CI as possible, you can use the following command:
+
+```bash
+cargo run --manifest-path src/ci/citool/Cargo.toml run-local <job-name>
+# For example:
+cargo run --manifest-path src/ci/citool/Cargo.toml run-local dist-x86_64-linux-alt
+```
+
 [Docker]: https://www.docker.com/
 [`src/ci/docker`]: https://github.com/rust-lang/rust/tree/master/src/ci/docker
 [`src/ci/docker/run.sh`]: https://github.com/rust-lang/rust/blob/master/src/ci/docker/run.sh
diff --git a/src/tests/running.md b/src/tests/running.md
@@ -240,30 +240,6 @@ This is much faster, but doesn't always work. For example, some tests include
 directives that specify specific compiler flags, or which rely on other crates,
 and they may not run the same without those options.
 
-## Running `run-make` tests
-
-### Windows
-
-Running the `run-make` test suite on Windows is a currently bit more involved.
-There are numerous prerequisites and environmental requirements:
-
-- Install msys2: <https://www.msys2.org/>
-- Specify `MSYS2_PATH_TYPE=inherit` in `msys2.ini` in the msys2 installation directory, run the
-  following with `MSYS2 MSYS`:
-  - `pacman -Syuu`
-  - `pacman -S make`
-  - `pacman -S diffutils`
-  - `pacman -S binutils`
-  - `./x test run-make` (`./x test tests/run-make` doesn't work)
-
-There is [on-going work][port-run-make] to not rely on `Makefile`s in the
-run-make test suite. Once this work is completed, you can run the entire
-`run-make` test suite on native Windows inside `cmd` or `PowerShell` without
-needing to install and use MSYS2. As of <!--date-check --> Oct 2024, it is
-already possible to run the vast majority of the `run-make` test suite outside
-of MSYS2, but there will be failures for the tests that still use `Makefile`s
-due to not finding `make`.
-
 ## Running tests on a remote machine
 
 Tests may be run on a remote machine (e.g. to test builds for a different
@@ -408,4 +384,3 @@ If you encounter bugs or problems, don't hesitate to open issues on the
 repository](https://github.com/rust-lang/rustc_codegen_gcc/).
 
 [`tests/ui`]: https://github.com/rust-lang/rust/tree/master/tests/ui
-[port-run-make]: https://github.com/rust-lang/rust/issues/121876
