Comment by zozbot234
6 years ago
It is "truth" in many cases. On a reasonably high-frequency, high-core count chip, instructions are almost free once you've managed to saturate your memory bandwidth. (Of course, that assumes that the code itself is "hot" enough that it's in cache somewhere, but this is the common case.)
But more instructions means a smaller portion of your code will fit in cache which means its less likely for any given code to be "hot".