[compiler-rt] [compiler-rt][nsan] Add support for nan detection (PR #101531)

[Alexander Shaposhnikov via llvm-commits]

alexander-shaposhnikov wrote:

Have not looked at the code yet.
Regarding tests - could you please add larger tests (e.g. quadratic equation and unstable version of softmax).
P.S. It'd be interesting to try it on a real-world program and see what the reports look like / check if things work as expected or not. 

https://github.com/llvm/llvm-project/pull/101531