C#•4y ago

LLVMSharp guidance needed

Hey, I've wrote a simple parser and lexer for my toy language and rn I'm trying to use LLVMSharp to compile it but I can't find any good documentation or tutorials that would explain it. If there is anyone willing to help me out (for free or for small price) then let me know!

n8ta•8/16/22, 4:58 PM

If you post specifically what you've tried and what's not working we might be more helpful. I've used llvm before but not through c#.

Nn8ta If you post specifically what you've tried and what's not working we might be mo...

TheosOP•8/16/22, 5:03 PM

So i don't really know where to start with implementing llvm

TheosOP•8/16/22, 5:03 PM

I have AST generation working and stuff

TheosOP•8/16/22, 5:04 PM

But i am stuck there

n8ta•8/16/22, 5:04 PM

So now you need to take your AST and convert it into llvm IR correct

TheosOP•8/16/22, 5:04 PM

Yes

n8ta•8/16/22, 5:05 PM

So LLVM has a tutorial for this language called kaleidoscope. You can find it here https://llvm.org/docs/tutorial/

n8ta•8/16/22, 5:05 PM

I'd suggest reading all of that (maybe follow along with c++ maybe not)

n8ta•8/16/22, 5:05 PM

And then read through the llvmsharp kaleidoscope here: https://github.com/dotnet/LLVMSharp/tree/main/samples/KaleidoscopeTutorial/Chapter3/KaleidoscopeLLVM

GitHub

LLVMSharp/samples/KaleidoscopeTutorial/Chapter3/KaleidoscopeLLVM at...

LLVM bindings for .NET Standard written in C# using ClangSharp - LLVMSharp/samples/KaleidoscopeTutorial/Chapter3/KaleidoscopeLLVM at main · dotnet/LLVMSharp

n8ta•8/16/22, 5:06 PM

That'll give you a good start on llvm

n8ta•8/16/22, 5:06 PM

and then your particular wrapper

TheosOP•8/16/22, 5:06 PM

Oh yeah, I've read it already. I guess I'll have to read it again a few times

TheosOP•8/16/22, 5:06 PM

So I'll understand it

n8ta•8/16/22, 5:06 PM

Start small don't try and compile your language

n8ta•8/16/22, 5:06 PM

It's too much for a first llvm program

n8ta•8/16/22, 5:07 PM

Try writing a function that returns it's arg. Then a func that returns it's arg + 1. etc etc

n8ta•8/16/22, 5:07 PM

Then try some control flow

n8ta•8/16/22, 5:07 PM

Test each little step along the way

n8ta•8/16/22, 5:08 PM

If you have a specific question I can prob help but that's some general advice

TheosOP•8/16/22, 5:08 PM

Thanks

TheosOP•8/16/22, 5:08 PM

I'll play with it

n8ta•8/16/22, 5:08 PM

LLVM can print it's IR

n8ta•8/16/22, 5:09 PM

That's super helpful. I'd figure out how to do that in llvmsharp too

n8ta•8/16/22, 5:09 PM

It's fairly readable

TheosOP•8/16/22, 5:09 PM

Mind if add you to friends so i can dm you later?

n8ta•8/16/22, 5:09 PM

Sure

TheosOP•8/16/22, 5:09 PM

I actually have completed some basic arithmetic stuff

TheosOP•8/16/22, 5:09 PM

And printed it out

TheosOP•8/16/22, 5:10 PM

But yeah, need to experiment with it more

n8ta•8/16/22, 5:10 PM

Okay so you're on your way (:

TheosOP•8/16/22, 5:13 PM

Yup, thanks