d4b5d2a020
Let's assume we have a vec2 collect instruction with killed sources that are non-contiguous and the entire rest of the register file is blocked, which can happen when our register target is very tight. It's impossible to just insert move instructions to resolve this, but we can make space by swapping one of the killed sources with the value next to the other, assuming it's also scalar. This commit implements that idea, preventing us from falling back to the terrible shuffle-everything approach in this case. total instructions in shared programs: 1566648 -> 1565117 (-0.10%) instructions in affected programs: 13332 -> 11801 (-11.48%) helped: 30 HURT: 5 helped stats (abs) min: 6 max: 535 x̄: 51.77 x̃: 25 helped stats (rel) min: 2.67% max: 33.63% x̄: 12.28% x̃: 9.58% HURT stats (abs) min: 1 max: 6 x̄: 4.40 x̃: 6 HURT stats (rel) min: 0.18% max: 5.13% x̄: 2.41% x̃: 2.13% 95% mean confidence interval for instructions value: -75.05 -12.43 95% mean confidence interval for instructions %-change: -13.18% -7.18% Instructions are helped. total mov in shared programs: 77336 -> 76683 (-0.84%) mov in affected programs: 2135 -> 1482 (-30.59%) helped: 29 HURT: 5 helped stats (abs) min: 2 max: 227 x̄: 23.31 x̃: 10 helped stats (rel) min: 6.06% max: 72.73% x̄: 31.83% x̃: 30.00% HURT stats (abs) min: 2 max: 9 x̄: 4.60 x̃: 4 HURT stats (rel) min: 14.29% max: 69.23% x̄: 34.00% x̃: 27.78% 95% mean confidence interval for mov value: -33.21 -5.20 95% mean confidence interval for mov %-change: -32.94% -11.35% Mov are helped. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13143>
`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.