[llvm-branch-commits] [CallGraphSection] Add call graph section options and documentation (PR #87572)

[Paul Kirth via llvm-branch-commits]

ilovepi wrote:

A few comments.

1. I think its better to split the LLVM and clang changes into separate patches.
2. Please update the commit messages w/ the correct [clang] or [llvm] tag.
3. These should probably be some of the last patches to land. Enabling driver support in clang + documentation and release notes are normally the last step in landing a complex feature. The LLVM flag support is less important about where it is in the stack, since it's not exposed externally.

https://github.com/llvm/llvm-project/pull/87572