dlqs / wasm-clang

Clang/LLD in WebAssembly

This is the demo for my CppCon 2019 talk! I'll update with a link to the video when it is live.

Thing should work, but it's still very much alpha demoware. Go to https://binji.github.io/wasm-clang to see it in action.

Most of the JavaScript code can be found here. If you're interested in the implementation of the in-memory filesystem, take a look at https://github.com/binji/llvm-project/tree/master/binji.

Directory structure

Shared utilities

• clang: clang compiler, compiled to wasm w/ WASI
• lld: lld linker, compiled to wasm w/ WASI
• main.css
• memfs: WASI implementation of in-memory filesystem,
• shared.js: shared utilities for all tools (web and d8)
• shared_web.js: shared utilities for all web tools (asm.html, index.html, etc.)
• sysroot.tar: C++ standard headers and libraries
• service_worker.js: Service worker used by all web pages
• worker.js: Dedicated work used to compile/run

Assemble 6502 code

• 6502.html
• 6502.js
• vasm6502_oldstyle: vasm assembler compiled to wasm w/ WASI

Compile C++ code to x86/wasm assembly

• asm.html
• asm.js

Compile C++ code in d8 (v8's console shell)

• d8.js

Compile and run C++ code

• index.html
• web.js