| commit | ea9f491696d9b39e9a6c4942ce7ef973ad36a271 | [log] [tgz] |
|---|---|---|
| author | Nicholas Nethercote <n.nethercote@gmail.com> | Mon Jul 29 08:13:50 2024 +1000 |
| committer | Nicholas Nethercote <n.nethercote@gmail.com> | Mon Jul 29 08:26:52 2024 +1000 |
| tree | b36d4ad2b14e5a7171dbd91335cb3638d29cd5c6 | |
| parent | b00404e1a1c5696e432d43086700e22c4fb7bcfa [diff] |
Reformat `use` declarations. The previous commit updated `rustfmt.toml` appropriately. This commit is the outcome of running `x fmt --all` with the new formatting options.
The goal of this project is to create an alternative codegen backend for the rust compiler based on Cranelift. This has the potential to improve compilation times in debug mode. If your project doesn't use any of the things listed under “Not yet supported”, it should work fine. If not please open an issue.
The Cranelift codegen backend is distributed in nightly builds on Linux and x86_64 macOS. If you want to install it using Rustup, you can do that by running:
$ rustup component add rustc-codegen-cranelift-preview --toolchain nightly
Once it is installed, you can enable it with one of the following approaches:
CARGO_PROFILE_DEV_CODEGEN_BACKEND=cranelift cargo +nightly build -Zcodegen-backendRUSTFLAGS="-Zcodegen-backend=cranelift" cargo +nightly build.cargo/config.toml:[unstable] codegen-backend = true [profile.dev] codegen-backend = "cranelift"
Cargo.toml:# This line needs to come before anything else in Cargo.toml cargo-features = ["codegen-backend"] [profile.dev] codegen-backend = "cranelift"
You can also download a pre-built version from the releases page. Extract the dist directory in the archive anywhere you want. If you want to use cargo clif build instead of having to specify the full path to the cargo-clif executable, you can add the bin subdirectory of the extracted dist directory to your PATH. (tutorial for Windows, and for Linux/MacOS).
If you want to build the backend manually, you can download it from GitHub and build it yourself:
$ git clone https://github.com/rust-lang/rustc_codegen_cranelift $ cd rustc_codegen_cranelift $ ./y.sh prepare $ ./y.sh build
To run the test suite replace the last command with:
$ ./test.sh
For more docs on how to build and test see build_system/usage.txt or the help message of ./y.sh.
| OS \ architecture | x86_64 | AArch64 | Riscv64 | s390x (System-Z) |
|---|---|---|---|---|
| Linux | ✅ | ✅ | ✅[^no-rustup] | ✅[^no-rustup] |
| FreeBSD | ✅[^no-rustup] | ❓ | ❓ | ❓ |
| AIX | ❌[^xcoff] | N/A | N/A | ❌[^xcoff] |
| Other unixes | ❓ | ❓ | ❓ | ❓ |
| macOS | ✅ | ✅ | N/A | N/A |
| Windows | ✅[^no-rustup] | ❌ | N/A | N/A |
✅: Fully supported and tested ❓: Maybe supported, not tested ❌: Not supported at all
Not all targets are available as rustup component for nightly. See notes in the platform support matrix.
[^xcoff]: XCOFF object file format is not supported. [^no-rustup]: Not available as rustup component for nightly. You can build it yourself.
rustc_codegen_cranelift can be used as a near-drop-in replacement for cargo build or cargo run for existing projects.
Assuming $cg_clif_dir is the directory you cloned this repo into and you followed the instructions (y.sh prepare and y.sh build or test.sh).
In the directory with your project (where you can do the usual cargo build), run:
$ $cg_clif_dir/dist/cargo-clif build
This will build your project with rustc_codegen_cranelift instead of the usual LLVM backend.
For additional ways to use rustc_codegen_cranelift like the JIT mode see usage.md.
See rustc_testing.md.
std::simd fully works, std::arch is partially supported)-Cpanic=abort is enabled by default)Licensed under either of
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be dual licensed as above, without any additional terms or conditions.