Empowering everyone to build reliable and efficient software. Gabriel's commits.
https://www.rust-lang.org/
a288a5ea06
The rust-toolchain file can also store an exact nightly snapshot
(instead of just "nightly"), so we can store whatever snapshot that
rustc_codegen_cranelift is known to work with.
This also lets us add a new feature to `cargo.sh` to let it use the
exact same nightly snapshot as cg_clif. If there's a nightly compiler
mismatch, you get a confusing error message like:
error: couldn't load codegen backend "librustc_codegen_cranelift.so":
"librustc_driver-681e2b4f66c73d3e.so: cannot open
shared object file: No such file or directory"
So doing this automatically in cargo.sh is useful.
|
||
|---|---|---|
| build_sysroot | ||
| crate_patches | ||
| example | ||
| patches | ||
| src | ||
| .gitignore | ||
| .travis.yml | ||
| abc.cpp | ||
| Cargo.lock | ||
| cargo.sh | ||
| Cargo.toml | ||
| clean_all.sh | ||
| config.sh | ||
| copy.clif | ||
| flamegraph.sh | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| prepare.sh | ||
| Readme.md | ||
| rust-toolchain | ||
| test.sh | ||
WIP Cranelift codegen backend for rust
⚠⚠⚠ Threads and certain kinds of FFI don't work yet. ⚠⚠⚠
Building
$ git clone https://github.com/bjorn3/rustc_codegen_cranelift.git
$ cd rustc_codegen_cranelift
$ ./prepare.sh # download and patch sysroot src and install hyperfine for benchmarking
$ ./test.sh --release
Usage
$cg_clif_dir is the directory you cloned this repo into in the following instruction.
Cargo
$ CHANNEL="release" $cg_clif_dir/cargo.sh run
If you compiled cg_clif in debug mode you should use CHANNEL="debug" instead or omit CHANNEL="release" completely.
Rustc
$ rustc -Cpanic=abort -Zcodegen-backend=$cg_clif_dir/target/release/librustc_codegen_cranelift.so --sysroot $cg_clif_dir/build_sysroot/sysroot my_crate.rs
Not yet supported
- Good non-rust abi support (several problems)
- Checked binops (some missing instructions in cranelift)
- Inline assembly (no cranelift support, not coming soon)
- SIMD (tracked here, some basic things work)
Troubleshooting
Can't compile
Try updating your nightly compiler. You can try to use an nightly a day or two older if updating rustc doesn't fix it. If you still can't compile it, please fill an issue.