Georg Lehmann ef246aaf72 aco/isel: emit register copies for workgroup ids
This way, we don't overestimate SGPR pressure.

Foz-DB Navi48:
Totals from 1413 (1.45% of 97637) affected shaders:
Instrs: 3468375 -> 3468585 (+0.01%); split: -0.01%, +0.02%
CodeSize: 18643064 -> 18643520 (+0.00%); split: -0.01%, +0.01%
VGPRs: 71776 -> 71788 (+0.02%)
SpillSGPRs: 18575 -> 18561 (-0.08%)
Latency: 23207643 -> 23207998 (+0.00%); split: -0.00%, +0.01%
InvThroughput: 8116806 -> 8116541 (-0.00%); split: -0.01%, +0.00%
VClause: 75250 -> 75252 (+0.00%); split: -0.00%, +0.00%
SClause: 65274 -> 65283 (+0.01%); split: -0.02%, +0.04%
Copies: 275750 -> 275942 (+0.07%); split: -0.03%, +0.10%
PreSGPRs: 70246 -> 69072 (-1.67%)
VALU: 1892111 -> 1892092 (-0.00%); split: -0.00%, +0.00%
SALU: 523460 -> 523648 (+0.04%); split: -0.02%, +0.05%
VOPD: 41097 -> 41102 (+0.01%)

Sadly the RA noise is slightly negative for instruction count.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38830>
2025-12-11 08:06:59 +00:00
2025-02-23 00:31:59 +01:00
2025-12-09 20:44:15 +00:00
2025-12-10 01:44:09 +00:00
2025-01-08 20:37:51 +00:00
2025-11-14 19:31:17 +00:00
2023-11-02 11:37:46 +00:00
2025-11-03 22:08:48 +00:00
2025-10-21 02:28:09 +00:00
2024-11-18 22:29:14 +00:00
2025-10-16 03:31:58 +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://docs.mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ meson setup build
  $ ninja -C build/
  $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_).


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

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

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