When the 'competition' is being advertised as an easy migration path for old software, then "backward compatible with IE6" means everything - it's just another

When the 'competition' is being advertised as an easy migration path for old software, then "backward compatible with IE6" means everything - it's just another way of measuring how much pain is involved in migrating some software over, only here instead of having to switch your entire corp and customers to Chrome, the change is mostly restricted to the developer toolchain. You're continuing to perpetuate the notion that asm.js only has implications for high performance software, despite replying to a comment where I gave you a very real use case that has nothing to do with performance. And as I suspect you already know, since you seem knowledgeable, GC can easily be implemented in about a million different ways using an emulated heap on top of a typed array, so yes, even a naive implementation of VB4 could easily be made to work.