rust/compiler/rustc_codegen_cranelift
Nicholas Nethercote bcf0ec0191 Replace mk_foo calls with infer_foo where possible.
There are several `mk_foo`/`intern_foo` pairs, where the former takes an
iterator and the latter takes a slice. (This naming convention is bad,
but that's a fix for another PR.)

This commit changes several `mk_foo` occurrences into `intern_foo`,
avoiding the need for some `.iter()`/`.into_iter()` calls. Affected
cases:
- mk_type_list
- mk_tup
- mk_substs
- mk_const_list
2023-02-17 22:24:31 +11:00
..
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build_system
docs
example
patches
scripts
src Replace mk_foo calls with infer_foo where possible. 2023-02-17 22:24:31 +11:00
.cirrus.yml
.gitattributes
.gitignore
Cargo.lock
Cargo.toml
clean_all.sh
config.txt
LICENSE-APACHE
LICENSE-MIT
Readme.md
rust-toolchain
rustfmt.toml
test.sh
y.rs

Cranelift codegen backend for rust

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.

Building and testing

$ git clone https://github.com/bjorn3/rustc_codegen_cranelift
$ cd rustc_codegen_cranelift
$ ./y.rs prepare
$ ./y.rs 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.rs.

Alternatively you can download a pre built version from Github Actions. It is listed in the artifacts section of workflow runs. Unfortunately due to GHA restrictions you need to be logged in to access it.

Usage

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.rs prepare and y.rs 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.

Configuration

See the documentation on the BackendConfig struct in config.rs for all configuration options.

Not yet supported

  • Inline assembly (no cranelift support)
    • On UNIX there is support for invoking an external assembler for global_asm! and asm!.
  • SIMD (tracked here, std::simd fully works, std::arch is partially supported)
  • Unwinding on panics (no cranelift support, -Cpanic=abort is enabled by default)

License

Licensed under either of

at your option.

Contribution

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.