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

[Jan Patrick Lehr via cfe-commits]

https://github.com/jplehr commented:

Thank you for contributing this patch. I am by no means an expert in this area, but would like to see xray get support for shared libraries.

I did an initial pass to simply look for easy things and left a few comments.

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