It's widely disputed that LLVM bitcode is actually ISA-agnostic. There is a HN comment quoting Chris Lattner as saying that CPU independence isn't really the po

It's widely disputed that LLVM bitcode is actually ISA-agnostic. There is a HN comment quoting Chris Lattner as saying that CPU independence isn't really the point of bitcode apps (I'd find it now but I'm on mobile). The thought is that it has a lot more to do with the ability to re-optimize.