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bjorn3 6c88af3438 Rustup to rustc 1.34.0-nightly (`7e001e5c6` 2019-02-27)		2019-02-28 10:55:21 +01:00
build_sysroot	Don't sign commits from patches in sysroot	2019-02-17 17:42:12 -08:00
example	Update cranelift and add a test for bitreverse	2019-02-23 10:41:34 +01:00
patches	Rustup to rustc 1.34.0-nightly (`00aae71f5` 2019-02-25)	2019-02-26 11:34:38 +01:00
src	Rustup to rustc 1.34.0-nightly (`7e001e5c6` 2019-02-27)	2019-02-28 10:55:21 +01:00
.gitignore	Add rust to .gitignore	2019-02-26 11:17:47 +01:00
.travis.yml	Stop using xargo for building the sysroot	2018-12-15 16:18:03 +01:00
abc.cpp	Implement line debuginfo	2019-01-26 11:59:57 +01:00
Cargo.lock	Merge pull request #380 from bjorn3/dependabot/cargo/gimli-7b828cb	2019-02-27 17:29:11 +00:00
Cargo.toml	Bump libc from 0.2.48 to 0.2.49	2019-02-27 09:35:15 +00:00
clean_all.sh	Stop using xargo for building the sysroot	2018-12-15 16:18:03 +01:00
config.sh	Cleanup config.sh	2019-02-11 15:42:28 +01:00
copy.clif	Fix some bugs	2018-08-08 10:26:25 +02:00
flamegraph.sh	Stop using xargo for building the sysroot	2018-12-15 16:18:03 +01:00
LICENSE-APACHE	Create LICENSE-APACHE	2018-06-22 19:33:35 +02:00
LICENSE-MIT	Add LICENSE-MIT	2018-06-22 19:34:27 +02:00
prepare.sh	Stop using xargo for building the sysroot	2018-12-15 16:18:03 +01:00
Readme.md	Libstd and varargs are now supported.	2019-02-16 12:21:22 +01:00
rust-toolchain	Initial commit	2018-06-17 18:05:11 +02:00
test.sh	Pass command-line arguments to JITed function	2019-02-18 18:53:18 +01:00

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 # downloads and patches sysroot src and installs 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 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 (scalar pair and vector are passed by-ref)
Checked binops (some missing instructions in cranelift)
Inline assembly (no cranelift support)
u128 and i128 (no cranelift support)
SIMD (tracked here)

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.