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bjorn3 fc826a7525 Benchmark simple-raytracer compilation [BENCH COMPILE] ebobby/simple-raytracer Benchmark #1: RUSTFLAGS='' cargo build --target x86_64-apple-darwin Time (mean ± σ): 16.539 s ± 0.781 s [User: 46.043 s, System: 3.822 s] Range (min … max): 15.057 s … 17.566 s 10 runs Benchmark #2: ../cargo.sh build Time (mean ± σ): 14.550 s ± 0.443 s [User: 25.856 s, System: 4.214 s] Range (min … max): 14.208 s … 15.751 s 10 runs Summary '../cargo.sh build' ran 1.14 ± 0.06 times faster than 'RUSTFLAGS='' cargo build --target x86_64-apple-darwin' [BENCH RUN] ebobby/simple-raytracer Benchmark #1: ./raytracer_cg_llvm Time (mean ± σ): 6.436 s ± 0.022 s [User: 6.392 s, System: 0.018 s] Range (min … max): 6.408 s … 6.466 s 10 runs Benchmark #2: ./raytracer_cg_clif Time (mean ± σ): 9.604 s ± 0.088 s [User: 9.547 s, System: 0.023 s] Range (min … max): 9.503 s … 9.742 s 10 runs Summary './raytracer_cg_llvm' ran 1.49 ± 0.01 times faster than './raytracer_cg_clif'		2019-11-23 15:10:45 +01:00
build_sysroot	Rustup to rustc 1.41.0-nightly (`ded5ee001` 2019-11-13)	2019-11-14 21:13:40 +01:00
crate_patches	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
example	Fix signed cast to 128bit integer	2019-11-16 16:44:26 +01:00
patches	Rustup to rustc 1.40.0-nightly (`10a52c25c` 2019-10-24)	2019-10-25 21:41:24 +02:00
src	Rustup to rustc 1.41.0-nightly (`53712f863` 2019-11-21)	2019-11-22 15:56:49 +01:00
.gitignore	Libtest support	2019-08-09 12:46:24 +02:00
.travis.yml	Fix travis ci config	2019-10-19 11:25:01 +02:00
abc.cpp	Implement line debuginfo	2019-01-26 11:59:57 +01:00
Cargo.lock	Update Cranelift	2019-11-16 15:22:43 +01:00
cargo.sh	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
Cargo.toml	Enable object backend by default	2019-11-23 15:06:23 +01:00
clean_all.sh	Remove simple-raytracer too in clean_all.sh	2019-09-12 20:22:09 +02:00
config.sh	Rustup to rustc 1.40.0-nightly (`2daa404e9` 2019-10-02)	2019-10-03 17:22:01 +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	Rustup to rustc 1.40.0-nightly (`10a52c25c` 2019-10-24)	2019-10-25 21:41:24 +02:00
Readme.md	Update Readme.md	2019-09-20 09:54:23 +02:00
rust-toolchain	Initial commit	2018-06-17 18:05:11 +02:00
test.sh	Benchmark simple-raytracer compilation	2019-11-23 15:10:45 +01:00

Readme.md

WIP Cranelift codegen backend for rust

⚠⚠⚠ Threads and certain kinds of FFI don't work 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.