| McCalpin is surprised because this will "break the fundamental architectural paradigm", and so am I. It will be quite complicated to implement in hardware. I have wondered what the purpose of these instructions was, and McCalpin seems to have the answer. If these instructions are implemented in a successor of Knights Landing, they should be single micro-op because the Knights Landing has poor performance of microcode. The new instructions are supported in my disassembler (objconv), but I am not sure about the assembly notation. |
Future instruction set: AVX-512 new - Agner - 2013-10-09
Future instruction set: AVX-512 new - Agner - 2013-10-26