From:  Lars Hansen <lhansen@mozilla.com>
Date:  19 Dec 2018 15:38:22 Hong Kong Time
Newsgroup:  news.mozilla.org/mozilla.dev.tech.js-engine.internals
Subject:  

js vs wasm and js vs js across browsers

NNTP-Posting-Host:  63.245.210.105

This is a sample-of-one but looks interesting:
https://medium.com/@torch2424/webassembly-is-fast-a-real-world-benchmark-of-webassembly-vs-es6-d85a23f8e193

I have not dug into it in detail, but I worry especially about the
tremendous negative spikes in our JS performance for the
non-closure-compiled case; this suggests some kind of policy bug, eg,
discarding compiled code too soon (I know this has been discussed again
recently).

--lars