So from my understanding the new WASM backend is no longer using LLVM… If not, then what is it using...

# webassembly

[Krystian]

So from my understanding the new WASM backend is no longer using LLVM… If not, then what is it using? How is Kotlin creating wasm file?

[hfhbd]

It is a new compiler backend like jvm or js (and I guess some parts of js are shared).

[Svyatoslav Kuzmich [JB]]

It uses its own code for emitting wasm binary

[Svyatoslav Kuzmich [JB]]

The pipeline is roughly .kt -> .klib -> wasmIR (in-memory) -> .wasm

[CLOVIS]

If my understanding is correct, the first step is done by K2, so it's common with all platforms, right?

[Svyatoslav Kuzmich [JB]]

Currently, the first step is K1. But we plan to move it to K2 with all other platforms.

[Svyatoslav Kuzmich [JB]]

Most of the compiler code is shared with JVM, JS and Native platforms.

[CLOVIS]

JS IR uses K1 too, right?

[Svyatoslav Kuzmich [JB]]

It does, currently.

[CLOVIS]

Thanks, sorry for derailing the subject a bit 🙏

[andylamax]

@CLOVIS thanks for asking these questions.

I was working on the similar assumptions as well. This clears up things a biy for me too