mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-02-16 04:20:34 +01:00
read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
e99081e76d
Instead of re-building the interference graph every time we spill, we
modify it in place so we can avoid recalculating liveness and the whole
O(n^2) interference graph building process. We make a simplifying
assumption in order to do so which is that all spill/fill temporary
registers live for the entire duration of the instruction around which
we're spilling. This isn't quite true because a spill into the source
of an instruction doesn't need to interfere with its destination, for
instance. Not re-calculating liveness also means that we aren't
adjusting spill costs based on the new liveness. The combination of
these things results in a bit of churn in spilling. It takes a large
cut out of the run-time of shader-db on my laptop.
Shader-db results on Kaby Lake:
total instructions in shared programs: 15311224 -> 15311360 (<.01%)
instructions in affected programs: 77027 -> 77163 (0.18%)
helped: 11
HURT: 18
total cycles in shared programs: 355544739 -> 355830749 (0.08%)
cycles in affected programs: 203273745 -> 203559755 (0.14%)
helped: 234
HURT: 190
total spills in shared programs: 12049 -> 12042 (-0.06%)
spills in affected programs: 2465 -> 2458 (-0.28%)
helped: 9
HURT: 16
total fills in shared programs: 25112 -> 25165 (0.21%)
fills in affected programs: 6819 -> 6872 (0.78%)
helped: 11
HURT: 16
Total CPU time (seconds): 2469.68 -> 2360.22 (-4.43%)
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
|
||
|---|---|---|
| .gitlab-ci | ||
| bin | ||
| build-support | ||
| docs | ||
| doxygen | ||
| include | ||
| scons | ||
| scripts | ||
| src | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .mailmap | ||
| .travis.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| appveyor.yml | ||
| CleanSpec.mk | ||
| common.py | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| REVIEWERS | ||
| SConstruct | ||
| 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.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.