d1e0227ef1
This doesn't help a lot of shaders, but it helps those few a LOT. This could also be implemented using bcsel. That version is very slightly worse because the generated SEL instruction wants to have two immediate sources, so one of them usually needs an extra MOV instruction to load. Results on the 308 shaders extracted from the fp64 portion of the OpenGL CTS: Tiger Lake and Ice Lake had similar results. (Tiger Lake shown) total instructions in shared programs: 929619 -> 928859 (-0.08%) instructions in affected programs: 1651 -> 891 (-46.03%) helped: 8 HURT: 0 helped stats (abs) min: 38 max: 152 x̄: 95.00 x̃: 95 helped stats (rel) min: 42.70% max: 86.36% x̄: 49.88% x̃: 44.66% 95% mean confidence interval for instructions value: -132.97 -57.03 95% mean confidence interval for instructions %-change: -62.28% -37.49% Instructions are helped. total cycles in shared programs: 7280180 -> 7272912 (-0.10%) cycles in affected programs: 12960 -> 5692 (-56.08%) helped: 8 HURT: 0 helped stats (abs) min: 352 max: 1456 x̄: 908.50 x̃: 910 helped stats (rel) min: 52.45% max: 91.19% x̄: 59.24% x̃: 55.15% 95% mean confidence interval for cycles value: -1274.03 -542.97 95% mean confidence interval for cycles %-change: -70.06% -48.41% Cycles are helped. Reviewed-by: Matt Turner <mattst88@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4142> |
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| CleanSpec.mk | ||
| README.rst | ||
| REVIEWERS | ||
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README.rst
`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.html <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.html <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `Freenode's #dri-devel <irc://chat.freenode.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.html <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.html <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.