Rhys Perry b37804c8de nir/algebraic: optimize 64-bit comparisons with zero'd halves to 32-bit
These expect nir_lower_int64 to replace u2u64 to pack_64_2x32_split(, 0).

fossil-db (navi31):
Totals from 149 (0.19% of 79242) affected shaders:
Instrs: 433095 -> 431830 (-0.29%); split: -0.29%, +0.00%
CodeSize: 2165980 -> 2160284 (-0.26%); split: -0.27%, +0.00%
SpillSGPRs: 689 -> 688 (-0.15%)
Latency: 3801497 -> 3799901 (-0.04%); split: -0.05%, +0.01%
InvThroughput: 1547916 -> 1546567 (-0.09%); split: -0.09%, +0.01%
VClause: 4698 -> 4693 (-0.11%)
SClause: 9981 -> 9977 (-0.04%); split: -0.05%, +0.01%
Copies: 66148 -> 65431 (-1.08%); split: -1.09%, +0.01%
PreSGPRs: 6732 -> 6729 (-0.04%)
PreVGPRs: 7976 -> 7945 (-0.39%)
VALU: 252936 -> 252336 (-0.24%)
SALU: 51794 -> 51274 (-1.00%); split: -1.03%, +0.02%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27335>
2024-03-06 15:23:18 +00:00
2022-11-22 19:04:13 +00:00
2024-01-24 10:02:10 +00:00
2023-11-02 11:37:46 +00:00
2024-01-24 10:53:14 +00:00
2024-01-11 11:05:47 +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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