Hm that's unfortunate. This seems more like something we'd desire from LLVM, but perhaps they have a reason they don't have a feature/cpu flag for supporting this. I'd be more comfortable putting this behind a `-Z` flag than making it a first-class command line argument. I realize that `-Z` has recently become a bit of a "dumping ground", but this does seem like it fits better there than as a main command line parameter (although I could be wrong).