My own code is in assembly. Plus, when that came out I tested the different alternatives, and found that my hardware didn't have the problem. Perhaps it was too

My own code is in assembly. Plus, when that came out I tested the different alternatives, and found that my hardware didn't have the problem. Perhaps it was too old. I also did extensive comparisons between the POPCNT version and the nibble-based version using PSHUFB, and showed that the POPCNT version was always faster.