Requesting Help with Optimizing Code

[tsbockman]

On Thursday, 8 April 2021 at 17:00:31 UTC, Kyle Ingraham wrote:
> Thanks for shining light on a level of optimization that I did 
> not know existed. I've got a lot of learning to do in this 
> area. Do you have any resources you'd recommend?

I learned a lot about micro-optimization from studying the ASM 
output of my inner loop code in Godbolt's Compiler Explorer, 
which supports D:
https://godbolt.org/

Other complementary resources:
https://www.felixcloutier.com/x86/
https://www.agner.org/optimize/

Understanding the basics of how prefetchers and cache memory 
hierarchies work is important, too.