How does the GC integration work? I've heard various (bad things) about LLVM's support for integrating a GC ..
https://github.com/dotnet/llilc/blob/master/Documentation/ll...
Andy Ayers from the LLILC team will be presenting this exact topic at the EuroLLVM developer meeting: http://llvm.org/devmtg/2015-04
I imagine the LLVM folks will put the meeting videos up on their website like they have in the past, and it would be an interesting video to watch if you're looking for GC specific details in LLILC.