Rhys Perry 5b4e41e4db aco: don't use v_mad_mix on GFX9 if 16-bit denormals must be preserved
This probably effectively disables the v_mad_mix optimization on GFX9.

fossil-db (Vega):
Totals from 11545 (7.15% of 161366) affected shaders:
MaxWaves: 43025 -> 42780 (-0.57%); split: +0.06%, -0.63%
Instrs: 18571635 -> 18734201 (+0.88%); split: -0.00%, +0.88%
CodeSize: 96483568 -> 96611012 (+0.13%); split: -0.11%, +0.24%
SGPRs: 1079056 -> 1077616 (-0.13%); split: -0.14%, +0.01%
VGPRs: 819248 -> 821868 (+0.32%); split: -0.04%, +0.36%
SpillSGPRs: 13313 -> 12464 (-6.38%)
Latency: 293804093 -> 295046122 (+0.42%); split: -0.09%, +0.51%
InvThroughput: 110002239 -> 110994978 (+0.90%); split: -0.03%, +0.93%
VClause: 342458 -> 342596 (+0.04%); split: -0.12%, +0.16%
SClause: 648566 -> 648046 (-0.08%); split: -0.12%, +0.04%
Copies: 1728225 -> 1726679 (-0.09%); split: -0.66%, +0.57%
Branches: 552973 -> 552963 (-0.00%); split: -0.02%, +0.02%
PreSGPRs: 862360 -> 856820 (-0.64%); split: -0.69%, +0.05%
PreVGPRs: 773689 -> 776818 (+0.40%); split: -0.02%, +0.42%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6178
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15718>
2022-04-04 19:27:12 +00:00
2022-01-19 15:17:17 +00:00
2022-02-02 22:49:09 +00:00

`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 & install
---------------

You can find more information in our documentation (`docs/install.rst
<https://mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <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 `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://mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.
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