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bjorn3 4d35be684d Implement 128bit comparison binops		2019-07-26 11:29:35 +02:00
build_sysroot	[WIP]	2019-07-26 11:28:04 +02:00
example	Implement 128bit multiply with overflow	2019-07-26 11:29:35 +02:00
patches	Don't disable stdsimd anymore	2019-07-20 15:33:57 +02:00
src	Implement 128bit comparison binops	2019-07-26 11:29:35 +02:00
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abc.cpp	Implement line debuginfo	2019-01-26 11:59:57 +01:00
Cargo.lock	[WIP] Basic i128 support	2019-07-26 11:28:04 +02:00
Cargo.toml	[WIP] Basic i128 support	2019-07-26 11:28:04 +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
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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	Some changes to README.md	2019-04-14 10:49:07 +02:00
rust-toolchain	Initial commit	2018-06-17 18:05:11 +02:00
test.sh	Cleanup	2019-06-11 16:59:42 +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 (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.