[vagab0nd]

What you said makes sense. The question is more from the perspective of the compiler/assembler. At these layers you explicitly say, move this number to this register, or read a number from this address. But you very rarely are able to say, copy this chunk of data into this cache line. Sure there are exceptions (like the GPU), and there are cases where you can hack it to do what you want. But in general you don't get to control the cache in a very specific way.