[rsc]

SP, FP, and PC are all still there. What we did was make the conventions more uniform across all architectures. The rules for certain corner cases for when SP and PC were references to the virtual register and when they were references to the real register were inconsistent. As part of having a single assembly parser, we made the rules consistent, which meant eliminating some forms that were accepted on only a subset of systems, or that had different meanings on different systems.

I'm a little surprised you brought that post up to begin with. It completely misses the point, as I explained in my comment here at the time (https://news.ycombinator.com/item?id=8817990). When I wrote that response I also submitted a comment on the blog itself with a link to the HN comment. That blog comment has not yet been published. If you're going to keep sending around links to such an inflammatory blog post, could you also try to get my comment there approved?

Thanks.