[llvm] [llvm][unittests] add NDEBUG for some unittests (PR #80821)

[via llvm-commits]

huaatian wrote:

> That's fair, it would be good to have a check for this either in CMake or in some header. I would prefer this option.
So, I added a check in CMake, would that be appropriate?



https://github.com/llvm/llvm-project/pull/80821