I'm hijacking a bit, but one thing I've been really wanting is some advanced optimization material for C++. There's so much that goes into data locality, branch elimination, faster ways to copy word-aligned data, and so on. I've picked up all I know on the fly, but would love some great resources which go deep into this. Is there something more instructive than Intel manuals?

Closest thing I found recently is this: https://agner.org/optimize/optimizing_cpp.pdf