Please does the cache line writeback instruction (clwb) influence the replacement policy since it retains the block in the cache. Or does it not have an effect?
Unless you can find an Intel writeup that specifically describes the behavior, you need to consider this to be "implementation-dependent". The influence (if any) of execution of CLWB on the replacement policy could probably be measured using https://github.com/andreas-abel/nanoBench/tree/master/tools/CacheAnalyzer or a variation on that code.
