If I recall properly I was warned (kind of a long time ago) that moving data between the general registers and the vector registers is not that cheap, to a poin

If I recall properly I was warned (kind of a long time ago) that moving data between the general registers and the vector registers is not that cheap, to a point it may be better to deal with the stack (~L1 cache memory). Any leads on that topic? Because I suspect the answers to be micro-architecture dependent and hidden deep in those abominations of llvm and gcc.