Fedora Cleared To Build Python Package With "-O3" Optimizations

[avis]

Here's my take on this situation, it feels very wrong.

I'm 99% sure there are individual GCC flags which can achieve the same performance targets without resorting to using -O3, for instance -funroll-all-loops.

Using such flags would be safer than enabling -O3 wantonly and we won't end up with bloated binaries.

[skeevy420]

I've tested -Os extensively on multiple devices and never once the binaries using it were faster than the binaries compiled with -O2. "The smaller code fits the cache better" is nothing but a myth unfortunately. -Os is OK for embedded devices where ROM storage space is at premium but that's it.

Yep. That -Os myth was very prevalent in the Android community back in the day and -O2 and -O3 builds were almost always faster. That's what I was trying to get across.

[skeevy420]

Here's my take on this situation, it feels very wrong.

I'm 99% sure there are individual GCC flags which can achieve the same performance targets without resorting to using -O3, for instance -funroll-all-loops.

Using such flags would be safer than enabling -O3 wantonly and we won't end up with bloated binaries.

So we need an -O2⅔

[WileEPyote]

I just compile everything in o3 unless it breaks or causes an obvious slowdown, then i'll recompile with o2

[Samara]

They also have Wget2 packaged as Wget now. That's a pretty big change:

https://fedoraproject.org/wiki/Changes/Wget2asWget

Distros like Arch don't even have a Wget2 package!
(it is in the AUR though: https://aur.archlinux.org/packages/wget2)

That may be a pretty big change, but not a good one according to Wget2 authors: https://gitlab.com/gnuwget/wget2/-/issues/661