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dependabot[bot] 9a3ba598a0 Bump gimli from `7b828cb` to `a5f5b72` Bumps [gimli](https://github.com/gimli-rs/gimli) from `7b828cb` to `a5f5b72`. - [Release notes](https://github.com/gimli-rs/gimli/releases) - [Commits](`7b828cb40e...a5f5b72666`) Signed-off-by: dependabot[bot] <support@dependabot.com>		2019-03-05 05:36:58 +00:00
build_sysroot	Don't sign commits from patches in sysroot	2019-02-17 17:42:12 -08:00
example	Rename load_value_pair to load_scalar_pair and fix dynamic dispatch with arbitrary self types	2019-03-03 12:19:55 +01:00
patches	Rustup to rustc 1.35.0-nightly (`87a436377` 2019-03-03)	2019-03-04 18:57:09 +01:00
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Cargo.lock	Bump gimli from `7b828cb` to `a5f5b72`	2019-03-05 05:36:58 +00:00
Cargo.toml	Fix cranelift patch paths	2019-03-02 20:25:08 +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
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rust-toolchain	Initial commit	2018-06-17 18:05:11 +02:00
test.sh	Rename load_value_pair to load_scalar_pair and fix dynamic dispatch with arbitrary self types	2019-03-03 12:19:55 +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.