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bjorn3 dbf94c5697 Rustup to rustc 1.38.0-nightly (`c798dffac` 2019-07-27)		2019-07-28 09:24:16 +02:00
build_sysroot	Remove unnecessary changes	2019-07-26 11:45:01 +02:00
example	Rustup to rustc 1.38.0-nightly (`c798dffac` 2019-07-27)	2019-07-28 09:24:16 +02:00
patches	Reduce patching of libcore a bit	2019-07-26 12:22:58 +02:00
src	Implement many more float intrinsics	2019-07-27 16:52:00 +02:00
.gitignore	Add rust to .gitignore	2019-02-26 11:17:47 +01:00
.travis.yml	[CI] Only cache .cargo dir	2019-07-03 16:27:06 +02:00
abc.cpp	Implement line debuginfo	2019-01-26 11:59:57 +01:00
Cargo.lock	Use own branch of clif instead of local checkout	2019-07-26 12:02:51 +02:00
Cargo.toml	Use own branch of clif instead of local checkout	2019-07-26 12:02:51 +02:00
clean_all.sh	Stop using xargo for building the sysroot	2018-12-15 16:18:03 +01:00
config.sh	Update for faerie section symbols	2019-06-11 16:45:15 +02:00
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	Update Readme.md	2019-07-26 11:47:27 +02:00
rust-toolchain	Initial commit	2018-06-17 18:05:11 +02:00
test.sh	Remove unnecessary changes	2019-07-26 11:45:01 +02:00

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 # 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)

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.