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156306e5e6
This commit rewrites opt_find_array_copies to be able to handle an array copy sequence with other intervening operations in between. In particular, this handles the case where we OpLoad an array of structs and then OpStore it, which generates code like: foo[0].a = bar[0].a foo[0].b = bar[0].b foo[1].a = bar[1].a foo[1].b = bar[1].b ... that wasn't recognized by the previous pass. In order to correctly handle copying arrays of arrays, and in particular to correctly handle copies involving wildcards, we need to use a tree structure similar to lower_vars_to_ssa so that we can walk all the partial array copies invalidated by a particular write, including ones where one of the common indices is a wildcard. I actually think that when factoring in the needed hashing/comparing code, a hash table based approach wouldn't be a lot smaller anyways. All of the changes come from tessellation control shaders in Strange Brigade, where we're able to remove the DXVK-inserted copy at the beginning of the shader. These are the result for radv: Totals from affected shaders: SGPRS: 4576 -> 4576 (0.00 %) VGPRS: 13784 -> 5560 (-59.66 %) Spilled SGPRs: 0 -> 0 (0.00 %) Spilled VGPRs: 0 -> 0 (0.00 %) Private memory VGPRs: 0 -> 0 (0.00 %) Scratch size: 8696 -> 6876 (-20.93 %) dwords per thread Code Size: 329940 -> 263268 (-20.21 %) bytes LDS: 0 -> 0 (0.00 %) blocks Max Waves: 330 -> 898 (172.12 %) Wait states: 0 -> 0 (0.00 %) Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> |
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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 email mailing-lists for patches submission, review and discussions.