Timur Kristóf b731be2e96 aco: Remove branch instruction when exec is constant non-zero.
This mainly helps the "if (elect())" that is used in
NGG culling shaders, effectively removing a useless branch
from every culling shader.

Totals from 58346 (45.35% of 128653) affected shaders:
CodeSize: 153238668 -> 153005284 (-0.15%)
Instrs: 29066198 -> 29007852 (-0.20%)
Latency: 133626003 -> 133598182 (-0.02%); split: -0.02%, +0.00%
InvThroughput: 20208765 -> 20208689 (-0.00%)
Branches: 1190209 -> 1131863 (-4.90%)

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13383>
2022-08-05 23:58:57 +00:00
2022-08-05 15:12:29 +00:00
2022-01-19 15:17:17 +00:00
2022-07-15 21:31:51 +00:00
2022-08-03 17:16:14 +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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