Re: How to compile mainline mesa with experimental compilers and standards (C++17 and C11)

Philipp Klaus Krause <[email protected]> Thu, 2 Nov 2017 13:52:57 +0100

Newsgroups	gmane.comp.video.mesa3d.user
Message-ID	<[email protected]>

Am 23.10.2017 um 21:59 schrieb John Jackson:
> After a some effort, I went ahead and provided a writeup on how
> compile mainline mesa with experimental compilers and standards at
> https://github.com/jjaxse2017/Mainline-Mesa-Expermental. I was hoping
> that there would be some interest with others doing so, to compare
> the results on other cards/drivers. I measured around a 18%
> improvement in performance against the padoka stable Ubuntu 17.04
> drivers with gcc 7 and llvm 6 combined with standard c++ 17 being a
> clear winner at optimization level 3. I went ahead and included a
> compiled version for AMD video cards and would be really interested
> to see the result differences with Open CL/Unigine benchmarks with
> the newer AMD cards RX470+.

While I haven't tried with Mesa yet, I found that many compute-intensive
applications benefit a lot from -fprofile-generate / -fprofile-use. You
might want to experiemt with those for Mesa, too.

Philipp
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