Is the C# compiler smart enough to optimize this code?

Question

Please ignore code readability in this question.

In terms of performance, should the following code be written like this:

int maxResults = criteria.M         


        

Answer 1

If criteria is a class type, I doubt it would be optimized, because another thread could always change that value in the meantime. For structs I'm not sure, but my gut feeling is that it won't be optimized, but I think it wouldn't make much difference in performance in that case anyhow.