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Merge commit '3a31c6d827' into sync_cg_clif-2021-07-07

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bjorn3 2021-07-07 11:14:20 +02:00
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11
compiler/rustc_codegen_cranelift/docs/usage.md
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@ -2,14 +2,14 @@
rustc_codegen_cranelift can be used as a near-drop-in replacement for `cargo build` or `cargo run` for existing projects.
Assuming `$cg_clif_dir` is the directory you cloned this repo into and you followed the instructions (`prepare.sh` and `build.sh` or `test.sh`).
Assuming `$cg_clif_dir` is the directory you cloned this repo into and you followed the instructions (`y.rs prepare` and `y.rs build` or `test.sh`).
## Cargo
In the directory with your project (where you can do the usual `cargo build`), run:
```bash
$ $cg_clif_dir/build/cargo.sh build
$ $cg_clif_dir/build/cargo build
```
This will build your project with rustc_codegen_cranelift instead of the usual LLVM backend.
@ -30,7 +30,7 @@ In jit mode cg_clif will immediately execute your code without creating an execu
> The jit mode will probably need cargo integration to make this possible.
```bash
$ $cg_clif_dir/build/cargo.sh jit
$ $cg_clif_dir/build/cargo jit
```
or
@ -40,11 +40,10 @@ $ $cg_clif_dir/build/bin/cg_clif -Cllvm-args=mode=jit -Cprefer-dynamic my_crate.
```
There is also an experimental lazy jit mode. In this mode functions are only compiled once they are
first called. It currently does not work with multi-threaded programs. When a not yet compiled
function is called from another thread than the main thread, you will get an ICE.
first called.
```bash
$ $cg_clif_dir/build/cargo.sh lazy-jit
$ $cg_clif_dir/build/cargo lazy-jit
```
## Shell