On 8/30/19 11:11 PM, Michał Górny wrote: > On Sat, 2019-08-31 at 00:03 -0700, Georgy Yakovlev wrote: <snip> >> +altivec - Use the AltiVec instruction set >> +vsx - Use the Vector Scalar Extension instruction set (POWER7 and later) >> +vsx3 - Use the Vector Scalar Extension v.3 instruction set (POWER9 and >> later) > > Do all those flags have real use cases in ::gentoo? I'd really prefer > not having more 'unused flag' warnings ;-). >
yeah, I have mentioned possible users above and there are plenty I haven't identified yet. patches to ebuilds will follow, I promise =) for example x264 if built with proper flags gives a noticeable boost, (at least 2x at encoding), totally worth it. ppc will not have a lot of flags like on arm or x86, maybe a couple more, but that's it for now.
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