Kenneth Graunke
a075b44493
brw_fs_opt_eliminate_find_live_channel eliminates FIND_LIVE_CHANNEL outside of control flow. None of our optimization passes generate additional cases of that instruction, so once it's gone, we shouldn't ever have to run the pass again. Moving it out of the loop should save a bit of CPU time. While we're at it, also clean adjacent BROADCAST instructions that consume the result of our FIND_LIVE_CHANNEL. Without this, we have to perform copy propagation to get the MOV 0 immediate into the BROADCAST, then algebraic to turn it into a MOV, which enables more copy propagation...not to mention CSE gets involved. Since this FIND_LIVE_CHANNEL + BROADCAST pattern from emit_uniformize() is really common, and it's trivial to clean up, we can do that. This lets the initial copy prop in the loop see MOV instead of BROADCAST. Zero impact on fossil-db, but less work in the optimization loop. Together with the previous patches, this cuts compile time in Borderlands 3 on Alchemist by -1.38539% +/- 0.1632% (n = 24). Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28286>
`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.