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

[Doug Wyatt via cfe-commits]

dougsonos wrote:

> Looking for weighing in on any of the code as it stands now, or the naming question posed by MaskRay [here](https://discourse.llvm.org/t/rfc-nolock-and-noalloc-attributes/76837/75), so far there seems to be support for rtsan over radsan :)

+1 for rtsan

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