On Tue, 07 Jun 2016 02:27:03 +0530, Shyam Saini said: > To choose best optimized code, i need to first compile them and then > disassemble the compiled code, where a change in single line would make a > significant difference in the performance.
Note that due to things like cache line misses, looking at the code will tell you almost nothing about which is *really* the "best" code... > So, my question is how to compile* x86 based network drivers on x86_64 > Ubuntu machine*. Currently I'm running Ubuntu 14.04. Why do you need to cross-compile? Just build the drivers as x86_64. Pretty much anybody who actually *cares* about performance has moved off 32-bit kernels a while ago (unless you're stuck with an embedded 32-bit CPU).
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