Auto merge of #138058 - jieyouxu:rollup-skdt0oz, r=jieyouxu

Rollup of 20 pull requests

Successful merges:

 - #134063 (dec2flt: Clean up float parsing modules)
 - #136581 (Retire the legacy `Makefile`-based `run-make` test infra)
 - #136662 (Count char width at most once in `Formatter::pad`)
 - #136764 (Make `ptr_cast_add_auto_to_object` lint into hard error)
 - #136798 (Added documentation for flushing per #74348)
 - #136865 (Perform deeper compiletest path normalization for `$TEST_BUILD_DIR` to account for compare-mode/debugger cases, and normalize long type file filename hashes)
 - #136975 (Look for `python3` first on MacOS, not `py`)
 - #136977 (Upload Datadog metrics with citool)
 - #137240 (Slightly reformat `std::fs::remove_dir_all` error docs)
 - #137298 (Check signature WF when lowering MIR body)
 - #137463 ([illumos] attempt to use posix_spawn to spawn processes)
 - #137477 (uefi: Add Service Binding Protocol abstraction)
 - #137569 (Stabilize `string_extend_from_within`)
 - #137633 (Only use implied bounds hack if bevy, and use deeply normalize in implied bounds hack)
 - #137679 (Various coretests improvements)
 - #137723 (Make `rust.description` more general-purpose and pass `CFG_VER_DESCRIPTION`)
 - #137728 (Remove unsizing coercions for tuples)
 - #137731 (Resume one waiter at once in deadlock handler)
 - #137875 (mir_build: Integrate "simplification" steps into match-pair-tree creation)
 - #138028 (compiler: add `ExternAbi::is_rustic_abi`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

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
@@ -424,11 +415,6 @@ 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>
-
 #### Quickly check if `rmake.rs` tests can be compiled
 
 You can quickly check if `rmake.rs` tests can be compiled without having to
@@ -481,20 +467,6 @@ 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
 

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.
@@ -222,8 +219,6 @@ 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.

src/tests/running.md

@@ -238,30 +238,6 @@ 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
@@ -406,4 +382,3 @@ 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