Files
compiler-explorer/lib
Tim Hutt d1d0883a86 Add support for the Sail language (#7304)
This adds support for the [Sail
language](https://github.com/rems-project/sail) - a DSL for defining
ISAs.

It's not quite ready but I need some help. These are the main remaining
issues:

1. When you "link to binary" it does disassemble the binary properly,
but the syntax highlighting and line numbers are broken.


![image](https://github.com/user-attachments/assets/2f4fe12c-49b4-4b26-9cb0-7e1666a7b3a2)

2. If you try to execute the code without a `function main() -> unit =
...` then it gives this error in the compiler output:

```
Internal Compiler Explorer error: Error: spawn /tmp/compiler-explorer-compiler2025025-31052-c8gern.pf8t/model.c EACCES
    at ChildProcess._handle.onexit (node:internal/child_process:285:19)
    at onErrorNT (node:internal/child_process:483:16)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
Compiler returned: -1
```

This is weird - it should give a linker with an undefined reference to
`zmain`.

3. Sail compiles to C, and then I added extra steps to compile that to
binary (if you select `Execute the code`), but as you can see I had to
move the binary back over the C file, so in this case `model.c` is
actually an ELF file. It works but that seems very weird. There is a
`getExecutableFilename()` method I could override, but doing that seems
to make it even more confused.

4. I also had to have a fake flag for `binary` because the `filters`
don't seem to get set correctly when passed to `runCompiler()`. E.g.
`buildExecutable()` doesn't pass them at all. Not sure what is going on
there. Seems to work though.

Any help appreciated!

PS: Sail is a cool language. It has lightweight dependent type for
integers and bit vectors, which I haven't demonstrated in the examples
yet, but they're neat.

---------

Co-authored-by: Matt Godbolt <matt@godbolt.org>
2025-04-17 17:22:18 -05:00
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