delta

Delta debugging is not new: https://en.wikipedia.org/wiki/Delta_debugging My implementation of delta debugging, "delta" is 19+ years old: https://github.com/dsw/delta I released it as Open Source because Microsoft Research sent someone to my office to ask me to, back when Microsoft was calling Open Source a "cancer". The LLVM introduction by Latner refers to the "standard delta debugging tool", so it is rather well-known: https://aosabook.org/en/v1/llvm.html 'unlike the standard "delta" command line tool.'