[luke_wagner]

To wit, as described in their blog post: https://blogs.windows.com/msedgedev/2017/04/20/improved- Edge validates and compiles wasm code lazily. Thus, this simplistic benchmark isn't really measuring compile time on Edge. In contrast, Firefox, Chrome and Safari are doing some amount of AOT compilation before WebAssembly.instantiate() resolves.

[ehsankia]

Here's a stupid question, but is the result of the Firefox and Chrome "instantiate" the exact same? Is the compilation doing the same job, or one could be performing more optimizations? Aka faster compilation but slower execution.

[computerphage]

They're doing slightly different things, but not to nearly the extent of Edge which is doing something very different.