WebAssembly in its current MVP form is shipped by all major browsers and is already capable of amazing things. This does not mean that its development has concluded: on the contrary, there are many post-MVP feature proposals at different stages of development. One such proposal is about adding the so-called…

Introduction At Leaning Technologies, we provide solutions for porting traditional desktop applications to the Web. Our C++ compiler Cheerp generates a combination of WebAssembly and JavaScript, allowing both easy interoperability with the browser and performance. As a showcase project we decided to port a multiplayer game to the Web, and we…

Introduction I work on Cheerp, a C++ to JavaScript and WebAssembly compiler based on LLVM. One of the challenges of compiling LLVM IR code to JavaScript and WebAssembly is the structured control flow problem: We have some code represented as a control flow graph (CFG), and we want to convert it…

A few months ago I saw this blog post by Mozilla, which is about rewriting part of their source-map library in rust code compiled to WebAssembly. I highly recommend reading it, as it shows in details a practical example of using WebAssembly to improve the performance of a JavaScript library. …