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

[Brian Cain via cfe-commits]

https://github.com/androm3da commented:

Instead of adding new commits to address feedback - please change the existing commits to alter the content to look as if it would when the PR would be merged.

(Unless perhaps there's an LLVM community policy to do it this way)

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