Ian Romanick 4425f4786a nir: Transform expressions of b2f(a) and b2f(b) to !(a || b)
All Gen6+ platforms had similar results. (Skylake shown)
total instructions in shared programs: 14276961 -> 14276892 (<.01%)
instructions in affected programs: 3215 -> 3146 (-2.15%)
helped: 28
HURT: 0
helped stats (abs) min: 1 max: 6 x̄: 2.46 x̃: 2
helped stats (rel) min: 0.47% max: 9.52% x̄: 4.34% x̃: 1.92%
95% mean confidence interval for instructions value: -2.87 -2.06
95% mean confidence interval for instructions %-change: -5.73% -2.95%
Instructions are helped.

total cycles in shared programs: 532577068 -> 532578400 (<.01%)
cycles in affected programs: 121864 -> 123196 (1.09%)
helped: 35
HURT: 30
helped stats (abs) min: 2 max: 268 x̄: 42.34 x̃: 22
helped stats (rel) min: 0.12% max: 12.14% x̄: 3.22% x̃: 1.86%
HURT stats (abs)   min: 2 max: 246 x̄: 93.80 x̃: 36
HURT stats (rel)   min: 0.09% max: 13.63% x̄: 4.47% x̃: 2.58%
95% mean confidence interval for cycles value: -5.02 46.01
95% mean confidence interval for cycles %-change: -0.99% 1.65%
Inconclusive result (value mean confidence interval includes 0).

Iron Lake and GM45 had similar results. (Iron Lake shown)
total instructions in shared programs: 7781299 -> 7781342 (<.01%)
instructions in affected programs: 22300 -> 22343 (0.19%)
helped: 13
HURT: 40
helped stats (abs) min: 2 max: 3 x̄: 2.85 x̃: 3
helped stats (rel) min: 1.15% max: 7.69% x̄: 3.72% x̃: 3.33%
HURT stats (abs)   min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel)   min: 0.26% max: 1.30% x̄: 0.47% x̃: 0.43%
95% mean confidence interval for instructions value: 0.23 1.39
95% mean confidence interval for instructions %-change: -1.18% 0.07%
Inconclusive result (%-change mean confidence interval includes 0).

total cycles in shared programs: 177878928 -> 177879332 (<.01%)
cycles in affected programs: 383298 -> 383702 (0.11%)
helped: 7
HURT: 43
helped stats (abs) min: 2 max: 18 x̄: 10.00 x̃: 10
helped stats (rel) min: 0.17% max: 4.81% x̄: 2.62% x̃: 3.40%
HURT stats (abs)   min: 2 max: 38 x̄: 11.02 x̃: 12
HURT stats (rel)   min: 0.08% max: 1.54% x̄: 0.25% x̃: 0.09%
95% mean confidence interval for cycles value: 5.21 10.95
95% mean confidence interval for cycles %-change: -0.51% 0.21%
Inconclusive result (%-change mean confidence interval includes 0).

v2: s/fmin/fmax/.  Noticed by Thomas Helland.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Thomas Helland <thomashelland90@gmail.com>
2018-08-04 01:12:03 -07:00
2016-08-30 16:44:00 -04:00
2017-09-06 17:48:50 +01:00
2018-08-03 18:36:11 -04:00
2018-06-16 18:09:20 +01:00
2018-08-03 18:36:11 -04:00
2018-08-03 18:36:11 -04:00
2018-08-01 20:33:00 +02:00
2018-08-02 18:00:15 +03:00

`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 status
------------

Travis:

.. image:: https://travis-ci.org/mesa3d/mesa.svg?branch=master
    :target: https://travis-ci.org/mesa3d/mesa

Appveyor:

.. image:: https://img.shields.io/appveyor/ci/mesa3d/mesa.svg
    :target: https://ci.appveyor.com/project/mesa3d/mesa

Coverity:

.. image:: https://scan.coverity.com/projects/139/badge.svg?flat=1
    :target: https://scan.coverity.com/projects/mesa


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.
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