Diverging from JS would require standardization, but it's too early to consider something like that. I don't know what our ultimate plan for threads will be or where asm.js will eventually end up; there are plenty more discussions to be had.
Thanks, that's a bit of helpful context. I appreciate that it's too early to say where exactly asm.js will go. I'm just afraid of private APIs or other divergence from JavaScript in order to mainstream asm.js. Sorry if that apprehension came across as overly negative.