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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
65237f8bbc
There was a subtle bug related to CFG tracking. Namely, some branch instructions may point *only* to the block after the DO instruction for the loop. If the MOV instructions are in the DO block, the may not have liveness properly tracked. Like in !25132, having the MOV instructions in blocks that might contain other instructions helps scheduling. shader-db: All Broadwell and newer Intel GPUs had similar results (Ice Lake shown) total cycles in shared programs: 848577248 -> 848557268 (<.01%) cycles in affected programs: 78256396 -> 78236416 (-0.03%) helped: 361 / HURT: 18 fossil-db: All Skylake and newer Intel GPUs had similar results (Ice Lake shown) Totals: Cycles: 15021501924 -> 15021372904 (-0.00%); split: -0.00%, +0.00% Totals from 735 (0.11% of 656080) affected shaders: Cycles: 676429502 -> 676300482 (-0.02%); split: -0.02%, +0.00% Reviewed-by: Francisco Jerez <currojerez@riseup.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26439> |
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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.