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08d71730ca
Detect cases like
mov.nz.f0.0(8) null<1>D g66<8,8,1>D
(+f0.0) sel(8) g123<1>UD g87<8,8,1>UD g84<8,8,1>UD
mov.nz.f0.0(8) null<1>D g66<8,8,1>D
(+f0.0) sel(8) g124<1>UD g88<8,8,1>UD g85<8,8,1>UD
Either MOV instruction could also be an equivalent CMP.
v2: Require no predicate, groups match, and flags written match.
v3: Add some more unit tests. Suggested by Caio.
shader-db:
All Intel platforms had similar results. (Lunar Lake shown)
total instructions in shared programs: 17203627 -> 17203590 (<.01%)
instructions in affected programs: 51432 -> 51395 (-0.07%)
helped: 37 / HURT: 0
total cycles in shared programs: 879884982 -> 879884670 (<.01%)
cycles in affected programs: 6014730 -> 6014418 (<.01%)
helped: 25 / HURT: 4
fossil-db:
Lunar Lake
Totals:
Instrs: 925092938 -> 925071952 (-0.00%); split: -0.00%, +0.00%
Cycle count: 105972157149 -> 105966120894 (-0.01%); split: -0.01%, +0.00%
Spill count: 3423592 -> 3423582 (-0.00%)
Fill count: 4876743 -> 4877121 (+0.01%); split: -0.00%, +0.01%
Max live registers: 193525293 -> 193525251 (-0.00%)
Max dispatch width: 49047056 -> 49047088 (+0.00%); split: +0.00%, -0.00%
Totals from 17714 (0.88% of 2018791) affected shaders:
Instrs: 56708169 -> 56687183 (-0.04%); split: -0.04%, +0.00%
Cycle count: 4560530879 -> 4554494624 (-0.13%); split: -0.15%, +0.01%
Spill count: 434846 -> 434836 (-0.00%)
Fill count: 807443 -> 807821 (+0.05%); split: -0.02%, +0.07%
Max live registers: 4332542 -> 4332500 (-0.00%)
Max dispatch width: 295248 -> 295280 (+0.01%); split: +0.02%, -0.01%
Meteor Lake and DG2 had similar results. (Meteor Lake shown)
Totals:
Instrs: 995075628 -> 995051291 (-0.00%); split: -0.00%, +0.00%
Cycle count: 92060967154 -> 92059311640 (-0.00%); split: -0.00%, +0.00%
Spill count: 3664664 -> 3664675 (+0.00%); split: -0.00%, +0.00%
Fill count: 4961929 -> 4961874 (-0.00%); split: -0.00%, +0.00%
Max live registers: 121480292 -> 121480184 (-0.00%)
Max dispatch width: 37947528 -> 37947496 (-0.00%)
Totals from 20569 (0.90% of 2278279) affected shaders:
Instrs: 57437989 -> 57413652 (-0.04%); split: -0.04%, +0.00%
Cycle count: 4297505238 -> 4295849724 (-0.04%); split: -0.06%, +0.03%
Spill count: 487508 -> 487519 (+0.00%); split: -0.00%, +0.00%
Fill count: 869228 -> 869173 (-0.01%); split: -0.01%, +0.00%
Max live registers: 2413028 -> 2412920 (-0.00%)
Max dispatch width: 239280 -> 239248 (-0.01%)
Tiger Lake and Ice Lake had similar results. (Tiger Lake shown)
Totals:
Instrs: 1012570598 -> 1012546137 (-0.00%); split: -0.00%, +0.00%
Cycle count: 85579989052 -> 85589116671 (+0.01%); split: -0.00%, +0.01%
Spill count: 3901755 -> 3901748 (-0.00%)
Fill count: 6799383 -> 6799367 (-0.00%)
Max live registers: 122288761 -> 122288658 (-0.00%)
Totals from 20595 (0.90% of 2280449) affected shaders:
Instrs: 57764192 -> 57739731 (-0.04%); split: -0.04%, +0.00%
Cycle count: 3899898675 -> 3909026294 (+0.23%); split: -0.04%, +0.27%
Spill count: 481262 -> 481255 (-0.00%)
Fill count: 1057996 -> 1057980 (-0.00%)
Max live registers: 2412395 -> 2412292 (-0.00%)
Skylake
Totals:
Instrs: 516619178 -> 516617390 (-0.00%)
Cycle count: 57593545602 -> 57592502019 (-0.00%); split: -0.00%, +0.00%
Fill count: 860403 -> 860402 (-0.00%)
Max live registers: 87553761 -> 87553649 (-0.00%)
Totals from 1357 (0.08% of 1730068) affected shaders:
Instrs: 3575640 -> 3573852 (-0.05%)
Cycle count: 1772148559 -> 1771104976 (-0.06%); split: -0.06%, +0.00%
Fill count: 68917 -> 68916 (-0.00%)
Max live registers: 131237 -> 131125 (-0.09%)
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38315>
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| .ci-farms-disabled | ||
| .github/workflows | ||
| .gitlab | ||
| .gitlab-ci | ||
| .marge/hooks | ||
| android | ||
| bin | ||
| build-support | ||
| docs | ||
| include | ||
| licenses | ||
| src | ||
| subprojects | ||
| .clang-format-ignore | ||
| .clang-format-include | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .graphqlrc.yml | ||
| .mailmap | ||
| .mr-label-maker.yml | ||
| .shellcheckrc | ||
| CODEOWNERS | ||
| meson.build | ||
| meson.options | ||
| README.rst | ||
| rustfmt.toml | ||
| 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.