> If the success of RISC architectures taught us anything, it's that replacing simple primitive operations with special-purpose combinations is rarely worth the transistors.
The whole idea of building an ecosystem of an open ISA with open implementations, where the ISA can be extended for specific applications. See e.g. https://riscv.org/wp-content/uploads/2016/12/Tue1100-RISC-V-... but it was also a salient point in the Patterson talk that was on the front page a few days ago.
RISC-V argues the exact opposite :)