Ian Romanick
4e3d69ad07
The pattern is added to opt_algebraic because, for example, comparisons with constant 0.0 will produce (a1 < 0). Even with a pass that optimized Boolean expressions, I think this would be very difficult to automatically recognize and optimize. 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: 933054 -> 929619 (-0.37%) instructions in affected programs: 784041 -> 780606 (-0.44%) helped: 59 HURT: 0 helped stats (abs) min: 2 max: 213 x̄: 58.22 x̃: 44 helped stats (rel) min: 0.02% max: 2.51% x̄: 0.72% x̃: 0.46% 95% mean confidence interval for instructions value: -70.80 -45.64 95% mean confidence interval for instructions %-change: -0.92% -0.53% Instructions are helped. total cycles in shared programs: 7304712 -> 7280180 (-0.34%) cycles in affected programs: 7176260 -> 7151728 (-0.34%) helped: 92 HURT: 0 helped stats (abs) min: 8 max: 1414 x̄: 266.65 x̃: 166 helped stats (rel) min: 0.04% max: 2.34% x̄: 0.43% x̃: 0.22% 95% mean confidence interval for cycles value: -333.05 -200.26 95% mean confidence interval for cycles %-change: -0.54% -0.31% Cycles are helped. Regular shader-db changes: No changes on any Intel platform. 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.