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2099c23dab
rather than always early killing and then hitting pathological shuffle
situations, only early-kill when we can prove that we won't need to shuffle. it
turns out that's most of the time.
even with this heuristic, we still get hurt bad in shader-db due to extra moves.
but hopefully, the #s here are small enough that we can move on with our lives
and fix this source of known unsoundness.
this is tagged for backport as it's needed to avoid a perf regression with the
previous patch.
combined stats from this commit and the previous commit:
total instrs in shared programs: 2846065 -> 2852257 (0.22%)
instrs in affected programs: 618734 -> 624926 (1.00%)
total alu in shared programs: 2329477 -> 2335534 (0.26%)
alu in affected programs: 508119 -> 514176 (1.19%)
total gprs in shared programs: 894762 -> 901327 (0.73%)
gprs in affected programs: 36946 -> 43511 (17.77%)
Backport-to: 25.1
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34595>
(cherry picked from commit
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| VERSION | ||
`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://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.