Generically cache and branch predict friendly code is worth most of the benefit. Micro-tuning is small potatoes compared to accidentally wiping the cache on eac

Generically cache and branch predict friendly code is worth most of the benefit. Micro-tuning is small potatoes compared to accidentally wiping the cache on each instruction (e.g. with badly designed objects) or mispredicting a thousand times in a row (e.g. with a poorly designed loop)