Do you already know the code that is not executed? If not, dynamic program analyses can help with identify the regions of code that are untouched (e.g., take a

Do you already know the code that is not executed? If not, dynamic program analyses can help with identify the regions of code that are untouched (e.g., take a look at javaagent for Java programs). Subsequently, you can use some form of reachability analysis to determine which code blocks to delete without causing a compilation failure.