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The previous logic would just set the block to the instructions original location if we couldn't evict it from a loop. For now we only push const loads to a later block inside ifs but we can add more heuristics later. This change helps a hand full of shaders but also stops a CTS regression caused by excess spilling after a series I'm working on to disable more of the GLSL IR optimisation passes. Shader-db results iris (BDW): total instructions in shared programs: 17529759 -> 17529749 (<.01%) instructions in affected programs: 15929 -> 15919 (-0.06%) helped: 5 HURT: 2 helped stats (abs) min: 1 max: 5 x̄: 2.40 x̃: 2 helped stats (rel) min: 0.06% max: 0.15% x̄: 0.11% x̃: 0.12% HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1 HURT stats (rel) min: 0.06% max: 0.06% x̄: 0.06% x̃: 0.06% 95% mean confidence interval for instructions value: -3.34 0.49 95% mean confidence interval for instructions %-change: -0.14% 0.02% Inconclusive result (value mean confidence interval includes 0). total cycles in shared programs: 861109994 -> 861099681 (<.01%) cycles in affected programs: 7027698 -> 7017385 (-0.15%) helped: 95 HURT: 72 helped stats (abs) min: 1 max: 7995 x̄: 138.54 x̃: 9 helped stats (rel) min: <.01% max: 15.96% x̄: 0.54% x̃: 0.11% HURT stats (abs) min: 1 max: 474 x̄: 39.56 x̃: 12 HURT stats (rel) min: <.01% max: 1.17% x̄: 0.20% x̃: 0.11% 95% mean confidence interval for cycles value: -159.05 35.54 95% mean confidence interval for cycles %-change: -0.45% 0.01% Inconclusive result (value mean confidence interval includes 0). total spills in shared programs: 17606 -> 17605 (<.01%) spills in affected programs: 323 -> 322 (-0.31%) helped: 1 HURT: 0 total fills in shared programs: 22599 -> 22598 (<.01%) fills in affected programs: 1348 -> 1347 (-0.07%) helped: 1 HURT: 0 Reviewed-by: Daniel Schürmann <daniel@schuermann.dev> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14940> |
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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.