I've submitted a pull request with a 2-3% speedup in decred.
I may work on it more, if there is interest.
wow: in a world of private miners, I push a free speedup to a popular algo and don't even get considered...
so far for my opensource miner efforts.
It's a thankless job. I've been busy with cpuminer-opt and mining has been in the background. But have started to
take a look at decred.
Don't take it too hard, I'm sure we leeches will suck up every bit of free hash we can get.