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With other changes in my tree, I observed this code from
dEQP-VK.subgroups.vote.compute.subgroupallequal_float have the second
cmp.z removed.
undef(8) %69:UD
cmp.z.f0.0(8) %69:F, %37:F, %57+0.0<0>:F
mov(1) v58+0.0:D, 0d NoMask group0
(+f0.0) mov(1) v58+0.0:D, -1d NoMask group0
cmp.nz.f0.0(8) null:D, v58+0.0<0>:D, 0d
...
undef(8) %72:UD
cmp.z.f0.0(8) %72:F, %37:F, %57+0.0<0>:F
mov(1) v63+0.0:D, 0d NoMask group0
(+f0.0) mov(1) v63+0.0:D, -1d NoMask group0
This was also fixed by running dead-code elimination before CSE. That
seems more like avoiding the problem than fixing it, though.
I believe this affects shader-db results because leaving the second
CMP in the shader can give more opportunities for cmod propagation.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Fixes:
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||
|---|---|---|
| .ci-farms | ||
| .ci-farms-disabled | ||
| .github/workflows | ||
| .gitlab | ||
| .gitlab-ci | ||
| android | ||
| bin | ||
| build-support | ||
| docs | ||
| include | ||
| src | ||
| subprojects | ||
| .clang-format | ||
| .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 | ||
| .pick_status.json | ||
| .shellcheckrc | ||
| 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://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.