M1 10x faster than Intel at integral division, throughput one 64-bit divide in two cycles

[Ola Fosheim Grostad]

On Thursday, 27 May 2021 at 08:46:20 UTC, Manu wrote:
> It's a strange thing to optimise... I seem to do an integer 
> divide so infrequently, that I can't imagine a measurable 
> improvement in most code I've ever written if it were 
> substantially faster. I feel like I stopped doing frequent 
> integer divides right about the same time computers got FPU's...

Maybe Swift programmers dont think in terms of 2^n? Apple wants 
Swift to be a system level language that is as easy to use as a 
high level language. Or maybe they have analyzed apps in appstore 
and found that people use div more than we know?

I personally feel bad if I don't make a datastructure compatible 
with 2^n algos... Except in Python, there I only feel bad if the 
code isnt looking clean.