Back in February I posted an RFC to update the toolchain to make it possible to use C++17 in LLVM. And now that the 15.x branch has been created the last step to update the C++ standard and make the requirements hard is posted here.
As soon as this is merged to main we can now start using C++17 features in LLVM!
I would also encourage developers to identify patterns we can use with C++17 to simplify and improve readability. If patterns like these are found we should propose to include them in the Coding Standards.
Thanks everyone that have helped to get us to this point!