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815236b417
We were wanting to check if the destination region spanned multiple registers. But we were checking against REG_SIZE, when the register size is actually REG_SIZE * reg_unit(devinfo) now. This meant that SIMD32 LOAD_PAYLOAD was always getting SIMD-split on Xe2 platforms, generating a lot of unnecessary mess for compute shaders. fossil-db results on Lunar Lake: Totals: Instrs: 146178614 -> 143291988 (-1.97%); split: -1.98%, +0.00% Subgroup size: 11089632 -> 11089376 (-0.00%); split: +0.00%, -0.00% Cycle count: 22528892444 -> 22507551650 (-0.09%); split: -0.12%, +0.03% Max live registers: 48834202 -> 48886685 (+0.11%); split: -0.09%, +0.20% Totals from 134306 (24.10% of 557327) affected shaders: Instrs: 28806335 -> 25919709 (-10.02%); split: -10.02%, +0.00% Subgroup size: 4297680 -> 4297424 (-0.01%); split: +0.00%, -0.01% Cycle count: 956867650 -> 935526856 (-2.23%); split: -2.84%, +0.61% Max live registers: 13085711 -> 13138194 (+0.40%); split: -0.33%, +0.73% Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32471> |
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`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.