It would be nice to have a tag for performance and optimisation related posts, because at the moment it’s occasionally quite difficult to tag them well. Sometimes the C/C++/assembly tags fit, but that’s not really what the posts are about.
Some examples from the first page of my submission history:
Those stories have almost no code, so tagging them with specific language tags doesn’t seem right.
and those stories are about using SIMD instructions, which are not really specific to any language. I tagged them assembly because the SSE intrinsics are pretty much C syntax for assembly, but again that doesn’t seem quite right.