How to determine the associativity of the instruction cache?

Question

Programming

Is the instruction cache associative? If so, how to determine its associativity using some algorithm? (The search for this information in the documentation for the processor is not suitable) I
checked the associativity of the data cache by accessing cells that are behind each other in memory at such a distance that they are displayed in the cache in the same line. How to do the same with instructions, I don’t really have any idea yet. I write in C/C++.