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#1 2021-10-01 16:26:35
- x3oo
- Member
- Registered: 2012-05-01
- Posts: 15
PGO, LTO and BOLT optimizations
I don't know much about compiling. I successfully use pacaur and set my compiler flags. I came across pgo,lto and bolt the other day and was wondering if there is a way to implement lto, pgo and/or bolt somewhat comfortably.
Maybe if its cumbersome, it would be worth it to compile chromium/firefox and the kernel with those cache optimizers.
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#2 2021-10-01 23:15:30
- Allan
- Pacman
- From: Brisbane, AU
- Registered: 2007-06-09
- Posts: 11,385
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Re: PGO, LTO and BOLT optimizations
makepkg enables LTO by putting this in the PKGBUILD:
options=('lto')
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#3 2021-10-01 23:30:30
- loqs
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- Registered: 2014-03-06
- Posts: 17,332
Re: PGO, LTO and BOLT optimizations
I thought chromium and firefox were already built with LTO and PGO? The kernel supports LTO but only if you build it with clang.
Edit:
Do be careful when setting such options through compiler flags see for example https://bbs.archlinux.org/viewtopic.php?id=269172
Last edited by loqs (2021-10-01 23:36:45)
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