So you saw that talk at WWDC as well? Every engineer from Apple that I've spoken to and asked about this has gone "What?! Did he really say that? Ignore it. We don't recommend that. Not at all."

Seeing as you're writing ObjC using a compiler I've worked on, I think that probably understand the "low level shit" better than you do.

You work on LLVM? Props to you, if so. Thats an awesome project. However, if you work on gcc, I haven't used that in over a year :-)

(I kid. Props to you, either way. I can't do what I do without what you do.)