Alyssa Rosenzweig
e83b708676
Now that they're in the right blocks, this is easy. Includes an informal proof and the implementation itself is built around a finite state machine, which together meant this code worked on its first try :~) And hey, it's a pointless little instruction saving optimization I've wanted to do for a while~ Major note is that this HAS to be done after register allocation, since it doesn't update the control flow graph and would introduce critical edges if it tried to actually deleted the else block. The intuitive reason for this is simple: sometimes RA needs to insert instructions into the else block, even if it was empty in the original NIR, so we always need an else block even if we can delete it with this pass after RA. total instructions in shared programs: 1778390 -> 1776725 (-0.09%) instructions in affected programs: 268459 -> 266794 (-0.62%) helped: 1013 HURT: 0 Instructions are helped. total bytes in shared programs: 12185102 -> 12175112 (-0.08%) bytes in affected programs: 1927524 -> 1917534 (-0.52%) helped: 1013 HURT: 0 Bytes are helped. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24635>
`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.