How many registers does an x86-64 CPU have?

Nov 30, 2020

Tags: programming, x86

x86 is back in the general programmer discourse, in part thanks to Apple’s M1 and Rosetta 2. As such, I figured I’d do yet another x86-64 post.

Just like the last one, I’m going to cover a facet of the x86-64 ISA that sets it apart as unusually complex among modern ISAs: the number and diversity of registers available.

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