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Pick instructions locally that are likely to minimize nop's globally. Note the obvious greedy solution is ineffective. Instead the principle is to choose instructions which will increase _future_ scheduler freedom, on the assumption that means fewer nop's overall will be needed. There is no concern about register pressure and little concern about message timing, since this is post-RA and message ordering was fixed. total tuples in shared programs: 125304 -> 123770 (-1.22%) tuples in affected programs: 88301 -> 86767 (-1.74%) helped: 548 HURT: 198 helped stats (abs) min: 1.0 max: 31.0 x̄: 3.43 x̃: 2 helped stats (rel) min: 0.33% max: 16.67% x̄: 3.09% x̃: 2.44% HURT stats (abs) min: 1.0 max: 12.0 x̄: 1.73 x̃: 1 HURT stats (rel) min: 0.27% max: 11.11% x̄: 2.82% x̃: 2.35% 95% mean confidence interval for tuples value: -2.39 -1.72 95% mean confidence interval for tuples %-change: -1.77% -1.27% Tuples are helped. total clauses in shared programs: 26059 -> 25655 (-1.55%) clauses in affected programs: 10821 -> 10417 (-3.73%) helped: 311 HURT: 42 helped stats (abs) min: 1.0 max: 6.0 x̄: 1.44 x̃: 1 helped stats (rel) min: 0.48% max: 16.00% x̄: 5.26% x̃: 5.00% HURT stats (abs) min: 1.0 max: 2.0 x̄: 1.05 x̃: 1 HURT stats (rel) min: 2.13% max: 33.33% x̄: 7.49% x̃: 6.25% 95% mean confidence interval for clauses value: -1.26 -1.02 95% mean confidence interval for clauses %-change: -4.28% -3.21% Clauses are helped. total cycles in shared programs: 12154.79 -> 12114.83 (-0.33%) cycles in affected programs: 1907.63 -> 1867.67 (-2.09%) helped: 227 HURT: 99 helped stats (abs) min: 0.041665999999999315 max: 1.2083360000000027 x̄: 0.22 x̃: 0 helped stats (rel) min: 0.36% max: 20.00% x̄: 4.14% x̃: 3.85% HURT stats (abs) min: 0.041665999999999315 max: 0.5 x̄: 0.09 x̃: 0 HURT stats (rel) min: 0.28% max: 9.09% x̄: 2.75% x̃: 2.63% 95% mean confidence interval for cycles value: -0.15 -0.09 95% mean confidence interval for cycles %-change: -2.51% -1.59% Cycles are helped. total arith in shared programs: 4658.13 -> 4603.42 (-1.17%) arith in affected programs: 3449.83 -> 3395.12 (-1.59%) helped: 509 HURT: 249 helped stats (abs) min: 0.041665999999999315 max: 1.2083360000000027 x̄: 0.14 x̃: 0 helped stats (rel) min: 0.36% max: 20.00% x̄: 3.56% x̃: 2.63% HURT stats (abs) min: 0.041665999999999315 max: 0.5 x̄: 0.07 x̃: 0 HURT stats (rel) min: 0.28% max: 25.00% x̄: 3.32% x̃: 2.27% 95% mean confidence interval for arith value: -0.09 -0.06 95% mean confidence interval for arith %-change: -1.64% -0.97% Arith are helped. total quadwords in shared programs: 111394 -> 110114 (-1.15%) quadwords in affected programs: 78074 -> 76794 (-1.64%) helped: 503 HURT: 204 helped stats (abs) min: 1.0 max: 43.0 x̄: 3.33 x̃: 2 helped stats (rel) min: 0.41% max: 13.79% x̄: 3.02% x̃: 2.44% HURT stats (abs) min: 1.0 max: 26.0 x̄: 1.94 x̃: 1 HURT stats (rel) min: 0.48% max: 7.55% x̄: 2.44% x̃: 2.22% 95% mean confidence interval for quadwords value: -2.16 -1.46 95% mean confidence interval for quadwords %-change: -1.67% -1.21% Quadwords are helped. Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10961> |
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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://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <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 `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://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.