Wastrel: WebAssembly Without the Runtime

Wastrel is a new ahead-of-time compiler from WebAssembly to native binaries. It has all the features, tail calls, garbage collection (via Whippet), and exception handling included. In this talk we show how Wastrel can run on vanilla C programs compiled using the WASI toolchain with best-in-class performance, as well as running Scheme programs compiled using Hoot. We discuss how Wastrel build on Hoot's WebAssembly support library and compare the speed of Scheme programs in the browser versus Wastrel versus native Guile.