e3328dfa2f
This is a refinement of 7c129d9365 ("intel/brw/xe2+: Keep PS sample mask in the
f1.0 register whether or not kill is used."). Rather than always insert this
move, do so only when we'll actually read the register: for memory writes and
for discards. This deletes an instruction from piles of fragment shaders.
shader-db on LNL:
total instructions in shared programs: 17134031 -> 17042706 (-0.53%)
instructions in affected programs: 9065743 -> 8974418 (-1.01%)
helped: 65045
HURT: 0
helped stats (abs) min: 1.0 max: 3.0 x̄: 1.40 x̃: 1
helped stats (rel) min: <.01% max: 50.00% x̄: 3.06% x̃: 1.64%
95% mean confidence interval for instructions value: -1.41 -1.40
95% mean confidence interval for instructions %-change: -3.10% -3.03%
Instructions are helped.
total cycles in shared programs: 885172098 -> 884835306 (-0.04%)
cycles in affected programs: 590294230 -> 589957438 (-0.06%)
helped: 53636
HURT: 4500
helped stats (abs) min: 2.0 max: 1126.0 x̄: 8.02 x̃: 4
helped stats (rel) min: <.01% max: 50.00% x̄: 1.24% x̃: 0.24%
HURT stats (abs) min: 2.0 max: 7706.0 x̄: 20.77 x̃: 6
HURT stats (rel) min: <.01% max: 82.06% x̄: 1.09% x̃: 0.54%
95% mean confidence interval for cycles value: -6.15 -5.43
95% mean confidence interval for cycles %-change: -1.10% -1.02%
Cycles are helped.
LOST: 385
GAINED: 47
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38665>
`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.