Surely a profile-guided build should be able to only apply -Os to those function... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		jhgb on Oct 17, 2021 \| parent \| context \| favorite \| on: Bubble sort slower with -O3 than -O2 with GCC Surely a profile-guided build should be able to only apply -Os to those functions where it doesn't cause a lot of problems.

pclmulqdq on Oct 17, 2021 [–]

In the application I referred to, PGO was also used. However, that only applies -Os to cold code, and if what you're doing is very branchy, it can help even in the hot path.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact