LLVM is better technology but the fact that it isn't copyleft pains me (for one). Whereas with GCC you kind of have to upstream (making it easy or not), with L

LLVM is better technology but the fact that it isn't copyleft pains me (for one). Whereas with GCC you kind of have to upstream (making it easy or not), with LLVM you can upstream stuff you want other people to work with (or cynically, maintain) but keep relatively private things with your secret sauce (I don't think Apple's M1 patches for LLVM are upstreamed).