[clang] [compiler-rt] [XRay] Add support for instrumentation of DSOs on x86_64 (PR #90959)

[Tomer Shafir via cfe-commits]

tomershafir wrote:

@sebastiankreutzer hey, were you able to reach the maintainers of llvm-xray and probe them about its dev status? If yes, can you pls share how to reach them and what did they say?

https://github.com/llvm/llvm-project/pull/90959