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ba2ec1f369
Instead of emitting 1.0 / x which includes a slow division that LLVM doesn't always optimize even if the metadata is correctly set. No pipeline-db changes with VEGA10/LLVM 9. pipeline-db (VEGA10/LLVM 10): Totals from affected shaders: SGPRS: 6672 -> 6672 (0.00 %) VGPRS: 6652 -> 6652 (0.00 %) Spilled SGPRs: 0 -> 0 (0.00 %) Spilled VGPRs: 0 -> 0 (0.00 %) Code Size: 561780 -> 561692 (-0.02 %) bytes Max Waves: 1043 -> 1043 (0.00 %) pipeline-db (VEGA10/LLVM 11 - 92744f62478): Totals from affected shaders: SGPRS: 84608 -> 83768 (-0.99 %) VGPRS: 106768 -> 106636 (-0.12 %) Spilled SGPRs: 1625 -> 1713 (5.42 %) Spilled VGPRs: 0 -> 0 (0.00 %) Code Size: 10850936 -> 10726712 (-1.14 %) bytes Max Waves: 3152 -> 3180 (0.89 %) LLVM 11 (master) is more affected than previous versions, but based on the small impact with LLVM 9/10, I decided to emit it unconditionally. Cc: 20.0 <mesa-stable@lists.freedesktop.org> Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4326> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4326> |
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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.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.