Now to more specifically answer your question: we investigate the performance impact of new logic-in-memory instructions, so a softcore is appealing: add custom

Now to more specifically answer your question: we investigate the performance impact of new logic-in-memory instructions, so a softcore is appealing: add custom instructions to the CPU, wire them using the FPGA. Run and compare. But one could run this in production to do something like handle TCP/IP on the CPU, but put a specific custom DSP on the FPGA side.