Performance of 32-bit integers in a 64-bit environment (C++)

Question

We\'ve started compiling both 32- and 64-bit versions of some of our applications. One of the guys on my project is encouraging us to switch all of our 32-bit integers to their

Answer 1

Well if the 32-bit operations are taking place in 64-bit registers, some extra instructions do need to get emitted to handle things like setting carry/overflow flags, etc. I'd be surprised if you realised any noticeable performance improvement, though. I can all but guarantee there are far worse bottlenecks in your program.