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bjorn3 26289edf1a Fix cttz{,_nonzero} intrinsics		2019-02-16 15:42:20 +01:00
build_sysroot	Fix and enable libstd building	2019-02-11 19:40:07 +01:00
example	Fix cttz{,_nonzero} intrinsics	2019-02-16 15:42:20 +01:00
patches	Remove unnecessary stuff from patch 0002-Disable-u128-and-i128-in-libcore	2019-02-16 12:37:33 +01:00
src	Fix cttz{,_nonzero} intrinsics	2019-02-16 15:42:20 +01:00
.gitignore	Stop using xargo for building the sysroot	2018-12-15 16:18:03 +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	Bump cranelift from `4d92022` to `2145dd3`	2019-02-13 16:59:20 +00:00
Cargo.toml	Use IndexSet and keep full source info in set_debug_loc	2019-01-26 11:59:57 +01:00
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	Fix and enable libstd building	2019-02-11 19:40:07 +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.