You can for example use it to give hints to the compiler that allows for optimisations, that it couldn't do otherwise. Described e.g. here https://web.archive.

You can for example use it to give hints to the compiler that allows for optimisations, that it couldn't do otherwise. Described e.g. here https://web.archive.org/web/20160508051118/http://blog.regehr.org/archives/1096 https://web.archive.org/web/20160508051118/http://blog.regeh... Github https://github.com/preames/llvm-assume-hack https://github.com/preames/llvm-assume-hack