I'm not sure this is true. Many of the bit twiddling hacks can be used in NEON and they have a few unusual instructions I'm dying to play with. I'm not sure wh

I'm not sure this is true. Many of the bit twiddling hacks can be used in NEON and they have a few unusual instructions I'm dying to play with. I'm not sure which bit hack you're talking about that's done with a multiply or multiply-add. There's a nice use involving De Bruijin sequences for doing lg2 of a single bit that's very instructive - is that what you meant?