It's mentioned elsewhere in this HN discussion, but I think I'd encourage watching this talk: https://www.youtube.com/watch?v=r-TLSBdHe1A. It's particularly relevant to what you're seeing.
Yeah, I've watched that video. That's the source of my "I've also been pointed to https://github.com/ccurtsinger/stabilizer but it sounds tied to LLVM 3.1 and hasn't had any substantial updates since 2013."
