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eab1d36643
Rather than lowering in NIR. Importantly for Valhall, this allows
nir_opt_algebraic to optimize various bitwise ops into extracts and inserts,
taking pressure off the low-throughout SFU pipe and moving it onto the
high-throughput CVT pipe. This will mitigate a cycle count regression from
switching to the precise idiv lowering.
This also generates more integer widening conversions which we can fold into
32-bit instructions later, to allow optimizing GLSL like "(a & 0xFFFF) + b"
Valhall:
total instructions in shared programs: 2674836 -> 2674840 (<.01%)
instructions in affected programs: 6473 -> 6477 (0.06%)
helped: 14
HURT: 6
helped stats (abs) min: 1.0 max: 1.0 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.16% max: 1.37% x̄: 0.41% x̃: 0.49%
HURT stats (abs) min: 3.0 max: 3.0 x̄: 3.00 x̃: 3
HURT stats (rel) min: 1.19% max: 1.62% x̄: 1.35% x̃: 1.24%
95% mean confidence interval for instructions value: -0.68 1.08
95% mean confidence interval for instructions %-change: -0.30% 0.53%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 140627.42 -> 140627.36 (<.01%)
cycles in affected programs: 2.31 -> 2.25 (-2.70%)
helped: 1
HURT: 0
total cvt in shared programs: 14127.25 -> 14128.91 (0.01%)
cvt in affected programs: 153.50 -> 155.16 (1.08%)
helped: 0
HURT: 41
HURT stats (abs) min: 0.015625 max: 0.09375 x̄: 0.04 x̃: 0
HURT stats (rel) min: 0.27% max: 4.44% x̄: 1.61% x̃: 1.22%
95% mean confidence interval for cvt value: 0.03 0.05
95% mean confidence interval for cvt %-change: 1.29% 1.93%
Cvt are HURT.
total sfu in shared programs: 7555.69 -> 7549.31 (-0.08%)
sfu in affected programs: 107.31 -> 100.94 (-5.94%)
helped: 48
HURT: 0
helped stats (abs) min: 0.0625 max: 0.375 x̄: 0.13 x̃: 0
helped stats (rel) min: 1.34% max: 50.00% x̄: 13.57% x̃: 7.14%
95% mean confidence interval for sfu value: -0.15 -0.11
95% mean confidence interval for sfu %-change: -17.07% -10.06%
Sfu are helped.
total quadwords in shared programs: 1449912 -> 1449928 (<.01%)
quadwords in affected programs: 256 -> 272 (6.25%)
helped: 0
HURT: 2
Bifrost:
total instructions in shared programs: 2415370 -> 2415380 (<.01%)
instructions in affected programs: 1642 -> 1652 (0.61%)
helped: 2
HURT: 6
helped stats (abs) min: 1.0 max: 1.0 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.40% max: 0.40% x̄: 0.40% x̃: 0.40%
HURT stats (abs) min: 2.0 max: 2.0 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.95% max: 1.27% x̄: 1.07% x̃: 1.00%
95% mean confidence interval for instructions value: 0.09 2.41
95% mean confidence interval for instructions %-change: 0.13% 1.29%
Instructions are HURT.
total tuples in shared programs: 1928495 ->
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| .github/workflows | ||
| .gitlab/issue_templates | ||
| .gitlab-ci | ||
| android | ||
| bin | ||
| build-support | ||
| docs | ||
| include | ||
| src | ||
| subprojects | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .graphqlrc.yml | ||
| .mailmap | ||
| CODEOWNERS | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| 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://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.