Optimizing by hand is rarely the fastest thing to do nowadays. I wonder how the ... | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

ebbv on Jan 20, 2017 | parent | context | favorite | on: How quickly can you remove spaces from a string?

Optimizing by hand is rarely the fastest thing to do nowadays. I wonder how the original naive approach fairs with all optimizations turned on for gcc and with realistic input?

Too on Jan 21, 2017 [–]

The optimization flags used should be good enough.

https://github.com/lemire/despacer/blob/master/Makefile

CFLAGS = -fPIC -std=c99 -O3 -march=native

Join us for AI Startup School this June 16-17 in San Francisco!
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact