Its design follows the old idea that an ISA should be designed for assembly programmers; that instructions should implement complex or higher-level functions in

Its design follows the old idea that an ISA should be designed for assembly programmers; that instructions should implement complex or higher-level functions intended for a programmer to use directly. RISC rejected that notion (among other things) and focused on designing ISAs for a compiler to target when compiling high level languages, without wasting silicon on instructions a compiler cannot easily use. For the TPU, a compiler cannot easily take a 256x256 matrix multiply written in a high-level language like C and emit a Matrix_Multiply instruction.