[clang] [DebugInfo] Add flag to only emit referenced member functions (PR #87018)

[via cfe-commits]

dyung wrote:

Hi @dwblaikie the test debug-options.c is failing on the macOS build bot. Can you take a look?

https://lab.llvm.org/buildbot/#/builders/280/builds/4510

https://github.com/llvm/llvm-project/pull/87018