llvm-project

c3678c41 - Reland "[Clang] Load pass plugins before parsing LLVM options" (#171868)

Reland "[Clang] Load pass plugins before parsing LLVM options" (#171868) This permits pass plugins to use llvm::cl::opt. Additionally, add a test of -fpass-plugin, this was previously not tested at all. I'm not sure whether using the LLVM Bye.so in the tests is possible this way (e.g., if Clang is built standalone). Reland after #173279. Pull Request: https://github.com/llvm/llvm-project/pull/173287