In my daily job I just can't afford time-wise to think about things like this. More than thinking about it, taking the time to instrument, measure, and test a

In my daily job I just can't afford time-wise to think about things like this. More than thinking about it, taking the time to instrument, measure, and test a giant program with this level of granularity. This type of stuff needs to be handled by the language, compiler, or hardware.