2018-07-18 04:55:32 -05:00
|
|
|
# Work in progress cranelift codegen backend for rust
|
|
|
|
|
|
|
|
|
|
> ⚠⚠⚠ This doesn't do anything useful yet ⚠⚠⚠
|
|
|
|
|
|
|
|
|
|
## Building
|
|
|
|
|
|
|
|
|
|
```bash
|
2018-07-18 06:35:03 -05:00
|
|
|
$ git clone https://github.com/bjorn3/rustc_codegen_cranelift.git
|
2018-07-18 04:55:32 -05:00
|
|
|
$ cd rustc_codegen_cranelift
|
2018-07-19 10:59:13 -05:00
|
|
|
$ rustup override set nightly
|
2018-07-18 04:55:32 -05:00
|
|
|
$ git submodule update --init
|
|
|
|
|
$ cargo build
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
## Usage
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
$ rustc -Zcodegen-backend=$(pwd)/target/debug/librustc_codegen_cranelift.so my_crate.rs --crate-type lib -Og
|
|
|
|
|
```
|
|
|
|
|
|
2018-07-18 06:35:03 -05:00
|
|
|
## Building libcore
|
|
|
|
|
|
|
|
|
|
```bash
|
2018-07-19 11:41:37 -05:00
|
|
|
$ rustup component add rust-src
|
|
|
|
|
$ ./prepare_libcore.sh
|
2018-07-18 06:35:03 -05:00
|
|
|
$ ./build.sh
|
|
|
|
|
```
|
|
|
|
|
|
2018-08-08 09:03:06 -05:00
|
|
|
> This should stop with `error: aborting due to <...> previous errors`
|
|
|
|
|
>
|
|
|
|
|
> Please submit a bug if not
|
2018-07-18 06:35:03 -05:00
|
|
|
|
2018-07-18 04:55:32 -05:00
|
|
|
## Not yet supported
|
|
|
|
|
|
2018-07-19 12:08:37 -05:00
|
|
|
* Checked binops
|
|
|
|
|
* Statics
|
|
|
|
|
* Drop glue
|
2018-07-18 04:55:32 -05:00
|
|
|
|
2018-07-19 12:08:37 -05:00
|
|
|
* Building libraries
|
|
|
|
|
* Other call abi's
|
|
|
|
|
* Unsized types
|
|
|
|
|
* Slice indexing
|
|
|
|
|
* Sub slice
|
|
|
|
|
* Some rvalue's
|
2018-07-18 04:55:32 -05:00
|
|
|
|
2018-07-19 12:08:37 -05:00
|
|
|
* Inline assembly
|
|
|
|
|
* Custom sections
|
2018-07-18 09:29:40 -05:00
|
|
|
|
|
|
|
|
## Known errors
|
|
|
|
|
|
2018-07-19 12:08:37 -05:00
|
|
|
* cranelift-module api seems to be used wrong, thus causing panic for some consts
|
|
|
|
|
* cranelift-codegen doesn't have encodings for some instructions for types smaller than I32
|
