[llvm-branch-commits] [RFC][Clang] Allow plugins to hook into back-end (PR #165257)

[Eli Friedman via llvm-branch-commits]

efriedma-quic wrote:

The benefit would be that you could use the same plugin in multiple contexts.  clang plugins only work with clang itself.

https://github.com/llvm/llvm-project/pull/165257