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cfcb96da38
When the UNDEF instruction was added, we didn't do anything special in
split_virtual_grfs. This mean that anything with an UNDEF wasn't
getting split which causes problems for the compiler. Among other
things, it makes RA harder because things are in bigger chunks. It also
meant that dvec4s weren't getting split which means that they are larger
than the maximum register size.
Shader-db results on Kaby Lake:
total instructions in shared programs: 14959202 -> 14960035 (<.01%)
instructions in affected programs: 96197 -> 97030 (0.87%)
helped: 140
HURT: 128
helped stats (abs) min: 1 max: 17 x̄: 1.62 x̃: 1
helped stats (rel) min: 0.09% max: 6.15% x̄: 0.65% x̃: 0.45%
HURT stats (abs) min: 1 max: 825 x̄: 8.28 x̃: 1
HURT stats (rel) min: 0.13% max: 139.83% x̄: 1.70% x̃: 0.50%
95% mean confidence interval for instructions value: -2.96 9.18
95% mean confidence interval for instructions %-change: -0.56% 1.51%
Inconclusive result (value mean confidence interval includes 0).
total loops in shared programs: 4372 -> 4372 (0.00%)
loops in affected programs: 0 -> 0
helped: 0
HURT: 0
total cycles in shared programs: 352646771 -> 352840997 (0.06%)
cycles in affected programs: 218600800 -> 218795026 (0.09%)
helped: 21167
HURT: 21411
helped stats (abs) min: 1 max: 2924 x̄: 36.89 x̃: 10
helped stats (rel) min: <.01% max: 41.90% x̄: 2.97% x̃: 0.98%
HURT stats (abs) min: 1 max: 26027 x̄: 45.54 x̃: 10
HURT stats (rel) min: <.01% max: 324.46% x̄: 3.88% x̃: 1.06%
95% mean confidence interval for cycles value: 2.87 6.26
95% mean confidence interval for cycles %-change: 0.40% 0.55%
Cycles are HURT.
total spills in shared programs: 8840 -> 8953 (1.28%)
spills in affected programs: 126 -> 239 (89.68%)
helped: 1
HURT: 2
total fills in shared programs: 21782 -> 21914 (0.61%)
fills in affected programs: 431 -> 563 (30.63%)
helped: 1
HURT: 3
LOST: 0
GAINED: 5
Shader-db results on Haswell:
total instructions in shared programs: 13320918 -> 13320769 (<.01%)
instructions in affected programs: 40998 -> 40849 (-0.36%)
helped: 146
HURT: 56
helped stats (abs) min: 1 max: 8 x̄: 2.73 x̃: 2
helped stats (rel) min: 0.16% max: 8.60% x̄: 2.52% x̃: 2.22%
HURT stats (abs) min: 2 max: 23 x̄: 4.45 x̃: 4
HURT stats (rel) min: 0.21% max: 10.26% x̄: 6.83% x̃: 10.26%
95% mean confidence interval for instructions value: -1.26 -0.21
95% mean confidence interval for instructions %-change: -0.62% 0.77%
Inconclusive result (%-change mean confidence interval includes 0).
total loops in shared programs: 4373 -> 4373 (0.00%)
loops in affected programs: 0 -> 0
helped: 0
HURT: 0
total cycles in shared programs: 374518258 -> 374384193 (-0.04%)
cycles in affected programs: 231101954 -> 230967889 (-0.06%)
helped: 21427
HURT: 19438
helped stats (abs) min: 1 max: 2035 x̄: 31.09 x̃: 8
helped stats (rel) min: <.01% max: 40.95% x̄: 2.42% x̃: 0.86%
HURT stats (abs) min: 1 max: 20875 x̄: 27.38 x̃: 8
HURT stats (rel) min: <.01% max: 59.09% x̄: 2.49% x̃: 0.80%
95% mean confidence interval for cycles value: -4.49 -2.07
95% mean confidence interval for cycles %-change: -0.14% -0.04%
Cycles are helped.
total spills in shared programs: 23406 -> 23411 (0.02%)
spills in affected programs: 3 -> 8 (166.67%)
helped: 0
HURT: 2
total fills in shared programs: 34845 -> 34850 (0.01%)
fills in affected programs: 3 -> 8 (166.67%)
helped: 0
HURT: 2
LOST: 0
GAINED: 0
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111566
Fixes:
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| .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.