[mhast]

Jim Keller goes into some detail about what difference the ISA makes in general in this clip https://youtu.be/yTMRGERZrQE?si=u-dEXwxp0MWPQumy

Spoiler, it's not much because most of the actual execution time is spent in a handful of basic OPs.

Branch prediction is where the magic happens today.

[snvzz]

>Spoiler, it's not much because most of the actual execution time is spent in a handful of basic OPs.

Yet, on a CISC ISA, you still have to support everything else, which is essentially cruft.

[devnullbrain]

Does that matter? I lean towards the yes-the-ISA-matters camp, but I'm also under the impression that most silicon is dark.

[IshKebab]

Jim Keller has to say that.

[bigyabai]

The stage is yours if you choose to refute him.