Ian Romanick
3b6449d453
v2: Use -x instead of 32-x in shift counts. Tiger Lake total instructions in shared programs: 17597691 -> 17597405 (<.01%) instructions in affected programs: 224557 -> 224271 (-0.13%) helped: 74 HURT: 17 helped stats (abs) min: 1 max: 71 x̄: 14.36 x̃: 7 helped stats (rel) min: 0.08% max: 1.80% x̄: 0.50% x̃: 0.37% HURT stats (abs) min: 1 max: 141 x̄: 45.71 x̃: 40 HURT stats (rel) min: 0.03% max: 3.55% x̄: 1.20% x̃: 1.14% 95% mean confidence interval for instructions value: -10.53 4.24 95% mean confidence interval for instructions %-change: -0.38% 0.01% Inconclusive result (value mean confidence interval includes 0). total cycles in shared programs: 333595656 -> 333180770 (-0.12%) cycles in affected programs: 70056467 -> 69641581 (-0.59%) helped: 91 HURT: 4 helped stats (abs) min: 1 max: 25174 x̄: 4571.40 x̃: 400 helped stats (rel) min: <.01% max: 2.23% x̄: 0.40% x̃: 0.21% HURT stats (abs) min: 1 max: 370 x̄: 277.75 x̃: 370 HURT stats (rel) min: 0.01% max: 0.04% x̄: 0.04% x̃: 0.04% 95% mean confidence interval for cycles value: -5981.55 -2752.89 95% mean confidence interval for cycles %-change: -0.48% -0.29% Cycles are helped. Ice Lake, Skylake, Broadwell, and Haswell had similar results. (Ice Lake shown) total instructions in shared programs: 16117204 -> 16116723 (<.01%) instructions in affected programs: 207109 -> 206628 (-0.23%) helped: 100 HURT: 0 helped stats (abs) min: 1 max: 9 x̄: 4.81 x̃: 7 helped stats (rel) min: 0.10% max: 1.58% x̄: 0.23% x̃: 0.20% 95% mean confidence interval for instructions value: -5.51 -4.11 95% mean confidence interval for instructions %-change: -0.27% -0.19% Instructions are helped. total cycles in shared programs: 330487341 -> 330082421 (-0.12%) cycles in affected programs: 68037050 -> 67632130 (-0.60%) helped: 89 HURT: 7 helped stats (abs) min: 2 max: 24610 x̄: 4567.07 x̃: 400 helped stats (rel) min: <.01% max: 1.52% x̄: 0.39% x̃: 0.22% HURT stats (abs) min: 1 max: 370 x̄: 221.29 x̃: 170 HURT stats (rel) min: 0.01% max: 1.66% x̄: 0.58% x̃: 0.04% 95% mean confidence interval for cycles value: -5780.79 -2655.05 95% mean confidence interval for cycles %-change: -0.42% -0.22% Cycles are helped. Ivy Bridge total instructions in shared programs: 11873641 -> 11873137 (<.01%) instructions in affected programs: 147464 -> 146960 (-0.34%) helped: 54 HURT: 0 helped stats (abs) min: 9 max: 10 x̄: 9.33 x̃: 9 helped stats (rel) min: 0.29% max: 0.41% x̄: 0.34% x̃: 0.34% 95% mean confidence interval for instructions value: -9.46 -9.20 95% mean confidence interval for instructions %-change: -0.35% -0.33% Instructions are helped. total cycles in shared programs: 175769085 -> 175549519 (-0.12%) cycles in affected programs: 60770592 -> 60551026 (-0.36%) helped: 54 HURT: 0 helped stats (abs) min: 252 max: 13434 x̄: 4066.04 x̃: 1290 helped stats (rel) min: 0.02% max: 0.74% x̄: 0.34% x̃: 0.26% 95% mean confidence interval for cycles value: -5323.59 -2808.48 95% mean confidence interval for cycles %-change: -0.41% -0.27% Cycles are helped. No changes on any earlier Intel platforms. Reviewed-by: Matt Turner <mattst88@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4156>
`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 gitlab for patches submission, review and discussions.