You may find this link helpful for both the why and how: http://adriansampson.net/blog/llvm.html http://adriansampson.net/blog/llvm.html ( HN discussion: https

You may find this link helpful for both the why and how: http://adriansampson.net/blog/llvm.html http://adriansampson.net/blog/llvm.html ( HN discussion: https://news.ycombinator.com/item?id=9998140 https://news.ycombinator.com/item?id=9998140 )