No browser is going to implement JS in Web Assembly anytime soon. You have no idea how tight the performance margins are on SunSpider and the V8 benchmarks, for example. The entire compilation pipeline has to be lightning fast; adding another IR will kill you.
Web sites move to new technology at a glacial pace. You're posting this comment on a Web site that, by and large, hasn't even adopted CSS 1.0 for layout yet.
Web sites move to new technology at a glacial pace. You're posting this comment on a Web site that, by and large, hasn't even adopted CSS 1.0 for layout yet.