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bjorn3 0f8814fd6d Merge pull request #714 from bjorn3/dependabot/cargo/rand-0.7.1 Bump rand from 0.7.0 to 0.7.1		2019-09-16 09:37:28 +02:00
build_sysroot	Reenable debug assertions for libstd on macOS	2019-09-14 12:49:23 +02:00
crate_patches	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
example	Reenable debug assertions for libstd on macOS	2019-09-14 12:49:23 +02:00
patches	Rustup to rustc 1.39.0-nightly (`f0b58fcf0` 2019-09-11)	2019-09-12 20:21:54 +02:00
src	Fix trans_ptr_binop for fn()	2019-09-15 18:35:56 +02:00
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abc.cpp	Implement line debuginfo	2019-01-26 11:59:57 +01:00
cargo.sh	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
clean_all.sh	Remove simple-raytracer too in clean_all.sh	2019-09-12 20:22:09 +02:00
config.sh	Don't pass -Zalways-encode-mir to rustc	2019-08-19 16:27:33 +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
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test.sh	Correctly align offset for dst field projections	2019-09-02 20:09:37 +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.

Cargo

$ $cg_clif_dir/cargo.sh run

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

Not yet supported

Good non-rust abi support (several problems)
Checked binops (some missing instructions in cranelift)
Inline assembly (no cranelift support, not coming soon)
SIMD (tracked here, some basic things work)

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.