[clang] [compiler-rt] [compiler-rt] Realtime Sanitizer: Introduce Realtime Sanitizer (RTSan) backend (PR #92460)

[Chris Apple via llvm-commits]

cjappl wrote:

Also, just as a heads up, neither of the authors have commit access as we are new to LLVM. If this is OK to go in we will need help with that step. 

https://github.com/llvm/llvm-project/pull/92460