[hajile]

That's a standards issue. If w3c froze a particular version as the "one true version", then whatever experimentation the llvm guys want to do with whatever other versions doesn't matter.

Another solution is to version your code <script type="llvm" src="foo.ll" version="3.6.1" />

I'm already of the belief that w3c needs to require versioning of js code instead of stuff like 'use strict' (if it's bad, just remove it in new versions and move on). For backwards compatibility, if there's no version, assume ECMAScript3.