Processors change, compilers change. If you care about such details, best to ship multiple variants and pick the fastest one at runtime.
As I've mentioned here several times before, I've made code significantly faster by removing the hand-rolled assembly and replacing it with plain C or similar. While the assembly might have been faster a decade or two ago, things have changed...
As I've mentioned here several times before, I've made code significantly faster by removing the hand-rolled assembly and replacing it with plain C or similar. While the assembly might have been faster a decade or two ago, things have changed...