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bjorn3 314141392a Implement log2{f32,f64} intrinsics		2019-08-12 15:54:24 +02:00
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example	Implement log2{f32,f64} intrinsics	2019-08-12 15:54:24 +02:00
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Cargo.toml	[WIP] Implement dylib loading for the JIT	2019-08-10 16:50:23 +02:00
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config.sh	Misc changes	2019-08-11 17:33:52 +02:00
copy.clif	Fix some bugs	2018-08-08 10:26:25 +02:00
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Readme.md

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
$ ./prepare.sh # download and patch sysroot src and install hyperfine for benchmarking
$ ./test.sh

Usage

$cg_clif_dir is the directory you cloned this repo into in the following instruction.

Rustc

$ rustc -Cpanic=abort -Zcodegen-backend=$cg_clif_dir/target/debug/librustc_codegen_cranelift.so --sysroot $cg_clif_dir/build_sysroot/sysroot my_crate.rs

Cargo

$ RUSTFLAGS="-Cpanic=abort -Zcodegen-backend=$cg_clif_dir/target/debug/librustc_codegen_cranelift.dylib --sysroot $cg_clif_dir/build_sysroot/sysroot" cargo run

Not yet supported

Good non-rust abi support (vectors are passed by-ref)
Checked binops (some missing instructions in cranelift)
Inline assembly (no cranelift support)
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.