Connor Abbott
3ba315f205
At least on all a6xx/a7xx, mad.f32 and mad.f16 are not fused. This means that when the sources of a NIR ffma are all uniform we can split it in two to execute it on the scalar ALU. This is important to reduce register pressure and make more preambles executed early. On fossil-db the statistics are mostly a wash as expected, but with early preambles increasing dramatically: Totals: MaxWaves: 2249180 -> 2249230 (+0.00%); split: +0.01%, -0.01% Instrs: 49668884 -> 49662951 (-0.01%); split: -0.12%, +0.11% CodeSize: 103662656 -> 103831154 (+0.16%); split: -0.22%, +0.38% NOPs: 8502571 -> 8495568 (-0.08%); split: -0.61%, +0.53% MOVs: 1554442 -> 1538804 (-1.01%); split: -2.01%, +1.01% Full: 1820906 -> 1814292 (-0.36%); split: -0.39%, +0.03% (ss): 1168628 -> 1165868 (-0.24%); split: -1.01%, +0.78% (sy): 616751 -> 616521 (-0.04%); split: -0.52%, +0.49% (ss)-stall: 4384397 -> 4361662 (-0.52%); split: -1.44%, +0.93% (sy)-stall: 17850227 -> 17858949 (+0.05%); split: -0.58%, +0.63% Early-preamble: 102262 -> 115702 (+13.14%) Cat0: 9375820 -> 9367978 (-0.08%); split: -0.57%, +0.48% Cat1: 2470212 -> 2454318 (-0.64%); split: -1.28%, +0.64% Cat2: 18673655 -> 18707106 (+0.18%) Cat3: 14227810 -> 14211106 (-0.12%) Cat5: 1424184 -> 1424150 (-0.00%) Cat7: 1404718 -> 1405808 (+0.08%); split: -0.39%, +0.47% Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34115>
`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.