Ian Romanick
de4acd8816
...instead of 0 or 1. Many places the sign bit is extracted, then later put back in the same position. This saves some left-shift operations. 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: 848106 -> 844558 (-0.42%) instructions in affected programs: 833480 -> 829932 (-0.43%) helped: 106 HURT: 1 helped stats (abs) min: 1 max: 995 x̄: 33.48 x̃: 12 helped stats (rel) min: 0.15% max: 2.20% x̄: 0.60% x̃: 0.35% HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1 HURT stats (rel) min: <.01% max: <.01% x̄: <.01% x̃: <.01% 95% mean confidence interval for instructions value: -51.88 -14.43 95% mean confidence interval for instructions %-change: -0.71% -0.47% Instructions are helped. total cycles in shared programs: 6969125 -> 6962024 (-0.10%) cycles in affected programs: 6717689 -> 6710588 (-0.11%) helped: 78 HURT: 7 helped stats (abs) min: 2 max: 2083 x̄: 110.27 x̃: 56 helped stats (rel) min: <.01% max: 0.30% x̄: 0.11% x̃: 0.11% HURT stats (abs) min: 2 max: 1340 x̄: 214.29 x̃: 4 HURT stats (rel) min: 0.01% max: 0.71% x̄: 0.13% x̃: 0.02% 95% mean confidence interval for cycles value: -144.02 -23.06 95% mean confidence interval for cycles %-change: -0.12% -0.07% Cycles are helped. total spills in shared programs: 814 -> 759 (-6.76%) spills in affected programs: 814 -> 759 (-6.76%) helped: 2 HURT: 1 total fills in shared programs: 2488 -> 2412 (-3.05%) fills in affected programs: 2488 -> 2412 (-3.05%) helped: 2 HURT: 1 Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Matt Turner <mattst88@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4142>
`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.