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Add function to call bitcode

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Dimitar Apostolov 2020-09-17 13:37:30 +02:00
parent e89af31015
commit 9276fd8c9d
2 changed files with 27 additions and 34 deletions
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6
compiler/builtins/bitcode/README.md
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@ -33,6 +33,8 @@ the `cargo rustc` command above to regenerate it.
> $ cargo rustc --release --lib -- --emit=llvm-ir
> ```
**Note**: In order to be able to address the bitcode functions by name, they need to be defined with the `#[no_mangle]` attribute.
## Importing the bitcode
The bitcode is a bunch of bytes that aren't particularly human-readable.
@ -54,3 +56,7 @@ compiler/gen/src/llvm/builtins.bc
Once that's done, `git status` should show that the `builtins.bc` file
has been changed. Commit that change and you're done!
## Calling bitcode functions
Use the `call_bitcode_fn` function defined in `llvm/src/build.rs` to call bitcode funcitons.