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bjorn3 b2d6705fe2 Implement u/i128 <-> float casts Fixes #668		2019-08-21 14:01:29 +02:00
build_sysroot	Misc changes	2019-08-18 14:57:46 +02:00
crate_patches	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
example	Implement u/i128 <-> float casts	2019-08-21 14:01:29 +02:00
patches	Workaround for missing icmp{,_imm}.i128 legalizations	2019-08-15 11:36:23 +02:00
src	Implement u/i128 <-> float casts	2019-08-21 14:01:29 +02:00
.gitignore	Libtest support	2019-08-09 12:46:24 +02:00
.travis.yml	Improve ci times	2019-08-10 14:22:22 +02:00
abc.cpp	Implement line debuginfo	2019-01-26 11:59:57 +01:00
Cargo.lock	Include load/store.i128 fix from my cranelift branch	2019-08-15 13:37:38 +02:00
cargo.sh	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
Cargo.toml	Only build dylib	2019-08-13 19:46:16 +02:00
clean_all.sh	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +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
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	Test rust-lang/regex example shootout-regex-dna	2019-07-30 13:37:54 +02:00
Readme.md	Misc changes	2019-07-30 14:51:05 +02:00
rust-toolchain	Initial commit	2018-06-17 18:05:11 +02:00
test.sh	Fix cross crate static duplicate codegen	2019-08-19 16:26:20 +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 (vectors are passed by-ref)
Checked binops (some missing instructions in cranelift)
Inline assembly (no cranelift support)
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.