[QUOTE=Thndr] [QUOTE=Joannesalfa] ASM.js is new technology, actually is not supported yet to actual browsers, so we will see what happens.[/QUOTE] So then it's not backwards compatible?[/QUOTE]
Yes, according this presentation http://kripken.github.com/mloc_emscripten_talk/#/32
Basically, it says "Not supported yet: C++ exceptions, setjmp/longjmp"
I'm sure i'm wrong when i said is not supported all browsers due to Ashley's post that he will not use it.