Ian Romanick
88eb8f190b
This occurs in a handful of places in the soft-fp64 code, and that is the primary reason for the change. v2: Fix a typo in a comment. Noticed by Matt. Copy the correct fp64 shader-db results to the commit message. I realized that I used accidentally used the results from the next commit. 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: 906235 -> 906149 (<.01%) instructions in affected programs: 353966 -> 353880 (-0.02%) helped: 31 HURT: 2 helped stats (abs) min: 1 max: 8 x̄: 3.03 x̃: 3 helped stats (rel) min: 0.01% max: 1.59% x̄: 0.10% x̃: 0.04% HURT stats (abs) min: 3 max: 5 x̄: 4.00 x̃: 4 HURT stats (rel) min: 0.02% max: 0.02% x̄: 0.02% x̃: 0.02% 95% mean confidence interval for instructions value: -3.51 -1.70 95% mean confidence interval for instructions %-change: -0.19% <.01% Inconclusive result (%-change mean confidence interval includes 0). total cycles in shared programs: 7076552 -> 7076173 (<.01%) cycles in affected programs: 2878361 -> 2877982 (-0.01%) helped: 37 HURT: 2 helped stats (abs) min: 2 max: 48 x̄: 10.81 x̃: 6 helped stats (rel) min: <.01% max: 2.17% x̄: 0.47% x̃: 0.01% HURT stats (abs) min: 1 max: 20 x̄: 10.50 x̃: 10 HURT stats (rel) min: <.01% max: 0.01% x̄: <.01% x̃: <.01% 95% mean confidence interval for cycles value: -13.96 -5.48 95% mean confidence interval for cycles %-change: -0.72% -0.16% Cycles are helped. total fills in shared programs: 2064 -> 2065 (0.05%) fills in affected programs: 45 -> 46 (2.22%) helped: 0 HURT: 1 Regular shader-db results: All Gen7+ platforms had similar results. (Tiger Lake shown) total instructions in shared programs: 17611530 -> 17611506 (<.01%) instructions in affected programs: 5934 -> 5910 (-0.40%) helped: 10 HURT: 0 helped stats (abs) min: 1 max: 5 x̄: 2.40 x̃: 2 helped stats (rel) min: 0.14% max: 1.24% x̄: 0.47% x̃: 0.34% 95% mean confidence interval for instructions value: -3.53 -1.27 95% mean confidence interval for instructions %-change: -0.78% -0.17% Instructions are helped. total cycles in shared programs: 338419178 -> 338419218 (<.01%) cycles in affected programs: 19244 -> 19284 (0.21%) helped: 4 HURT: 2 helped stats (abs) min: 2 max: 4 x̄: 3.00 x̃: 3 helped stats (rel) min: 0.05% max: 0.11% x̄: 0.08% x̃: 0.08% HURT stats (abs) min: 26 max: 26 x̄: 26.00 x̃: 26 HURT stats (rel) min: 1.20% max: 1.20% x̄: 1.20% x̃: 1.20% 95% mean confidence interval for cycles value: -9.08 22.41 95% mean confidence interval for cycles %-change: -0.35% 1.04% Inconclusive result (value mean confidence interval includes 0). No changes on any earlier 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.