Wasm3

Wasm3 is a high performance WebAssembly interpreter written in C. So you can now run WebAssembly on WebAssembly 🤩

When run natively, wasm3 is:

∼ 13.5x faster than other wasm interpreters (wac, life, wasm-micro-runtime)
∼ 5..6x slower than state of the art wasm JIT engines (liftoff, cranelift)
∼ 12.5x slower than native execution

* Based on CoreMark 1.0 benchmark. Your mileage may vary.

Running on webassembly.sh

First you need to make a wasm file you want to run available in the filesystem. One way to do it, is to get it from a server using curl command:

$ curl https://raw.githubusercontent.com/wasm3/wasm3/master/test/lang/fib32.wasm -o /fib32.wasm

$ ls -l /fib32.wasm
---------- 1 somebody somegroup 62 1970-01-19 05:45 /fib32.wasm

Now, we can run wasm3 in repl mode:

$ wasm3 --repl /fib32.wasm
wasm3> fib 20
Result: 6765
wasm3> fib 30
Result: 832040
wasm3> ^C
$