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Re:Are ad blockers doomed or have we already won? A history ... by kevingadd on Saturday February 29, 2020 @11:59AM (#22451513)
A few examples of things it adds that are not widely available in JS (if at all, or requiring awkward hacks/hints in JS), off the top of my head:

int64

uint32

popcnt

copysign

reinterpret_cast equivalent (the js hack for this is abysmal)

pthreads

SIMD

AOT compilation

To be fair, it's been a while since I was last one of the authors of the webassembly spec, so I could be missing some things.

Re:Are ad blockers doomed or have we already won? A history ... by Bombthecat on Sunday March 01, 2020 @02:11AM (#22455605)
Could ads be served with web assembly?
Re:Are ad blockers doomed or have we already won? A history ... by kevingadd on Sunday March 01, 2020 @03:27AM (#22455803)
Yes, though I don't know if it makes sense to do it for any reason other than hiding from ad blockers.
Re:Are ad blockers doomed or have we already won? A history ... by Bombthecat on Sunday March 01, 2020 @03:49AM (#22455881)
Well, for some it is the only reason needed...