From: Boaz Harrosh <bharrosh@xxxxxxxxxxx> Date: Wed, 15 Dec 2010 15:15:09 +0200 > I agree that the byte-compare or long-compare should give you very close > results in modern pipeline CPUs. But surly 12 increments-and-test should > show up against 3 (or even 2). I would say it must be a better plan. For strings of these lengths the setup code necessary to initialize the inner loop and the tail code to handle the sub-word ending cases eliminate whatever gains there are. I know this as I've been hacking on assembler optimized strcmp() and memcmp() in my spare time over the past year or so. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
