Georg Lehmann ad9c340d86 aco: insert VALU s_delay_alu for WMMA
This should avoid some SIMD stalls.

I think this special case was added to try to handle this case:

First Instruction: WMMA
Second Instruction: WMMA instruction with same VGPR of previous WMMA instruction’s Matrix D as Matrix C
Stall if the first and second instruction are not the same type of WMMA or use ABS/NEG on SRC2 of the second instruction

If I read it correctly, we shouldn't need a delay if the type is the same and no
modifier is used. That's kind of complex to handle, so leave it for now.
Not inserting any delays likely hurts more than this.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36328>
2025-07-29 05:48:29 +00:00
2025-02-23 00:31:59 +01:00
2025-01-08 20:37:51 +00:00
2025-07-29 05:48:29 +00:00
2025-02-09 08:13:27 +00:00
2023-11-02 11:37:46 +00:00
2025-07-24 16:12:10 +00:00
2025-07-26 00:33:59 +00:00
2024-11-18 22:29:14 +00:00
2025-07-16 13:50:24 +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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