6 ms·
I've heard this song before. RISC was supposed to be far more efficient than CISC, and magic compilers were the key to making that happen. It didn't really tu
by mark-r 1y ago
I've heard this song before. RISC was supposed to be far more efficient than CISC, and magic compilers were the key to making that happen. It didn't really turn out that way in the end.
- dlcarrier 1y agoPretty much every high-power high-efficiency core (whether x86 or arm or PowerPC or whatever) breaks instructions up into an extremely reduced instruction and executes those. There was a point where Pentium processors were effectively just executing RISC. There's a great write-up about it here: https://fanael.github.io/is-x86-risc-internally.html https://fanael.github.io/is-x86-risc-internally.html
- mark-r 1y agoYes, I knew that. Was thinking of mentioning it but decided it muddled the message. RISC didn't win in the end, it just created techniques that got borrowed to make CISC better.