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|---|---|---|
| alloc_system | ||
| example | ||
| src | ||
| xargo | ||
| .gitignore | ||
| .travis.yml | ||
| 0001-Disable-stdsimd.patch | ||
| 0002-Disable-u128-and-i128-in-libcore.patch | ||
| 0003-Disable-inline-assembly-in-spin_loop_hint.patch | ||
| 0004-Disable-some-more-unsupported-stuff-in-libcore.patch | ||
| 0005-Disable-compiler_builtins.patch | ||
| 0006-alloc-Disable-some-unsupported-stuff.patch | ||
| 0007-Fix-libstd-building.patch | ||
| 0008-Replace-some-variadic-function-calls-with-unimplemen.patch | ||
| build.sh | ||
| Cargo.lock | ||
| Cargo.toml | ||
| copy.clif | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| prepare_libcore.sh | ||
| Readme.md | ||
| rust-toolchain | ||
Work in progress cranelift codegen backend for rust
⚠⚠⚠ This doesn't do much useful yet ⚠⚠⚠
Building
$ git clone https://github.com/bjorn3/rustc_codegen_cranelift.git
$ cd rustc_codegen_cranelift
$ rustup override set nightly # This uses unstable api's which will never be stabilized
$ cargo install xargo # Used for building the sysroot
$ cargo install hyperfine # Used for benchmarking in build.sh
$ cargo build
Usage
$ rustc -Zcodegen-backend=$(pwd)/target/debug/librustc_codegen_cranelift.so my_crate.rs
Build sysroot and test
$ rustup component add rust-src # Make sure the sysroot source is availablr
$ ./prepare_libcore.sh # Patch the sysroot source for some not yet supported things
$ ./build.sh
Not yet supported
- Good non-rust abi support (non scalars are not yet supported for the "C" abi)
- Checked binops (some missing instructions in cranelift)
- Inline assembly (no cranelift support)
- Varargs (no cranelift support)
- libstd (needs varargs and some other stuff) (tracked here)
- u128 and i128 (no cranelift support)
- SIMD (huge amount of work to get all intrinsics implemented, so may never be supported)