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Job Noorman 563b0b347a
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ir3: don't create merge sets for subreg moves
There are multiple places where RA assumes merge sets are either
all-full or all-half registers. Creating merge sets for subreg moves
mixes full and half registers which may lead to RA failures.

Fix this by not creating merge sets for subreg moves anymore. Instead,
we manually try to allocate  a subreg move's src for its dst when
selecting a register during RA, similar to how ALU/SFU instructions try
to reuse their srcs.

Totals:
Instrs: 363174291 -> 363175216 (+0.00%); split: -0.00%, +0.00%
CodeSize: 922975364 -> 922977230 (+0.00%); split: -0.00%, +0.00%
NOPs: 47652421 -> 47652444 (+0.00%); split: -0.00%, +0.00%
MOVs: 15652959 -> 15653065 (+0.00%); split: -0.00%, +0.00%
COVs: 4097203 -> 4097052 (-0.00%); split: -0.01%, +0.00%
(ss): 7806025 -> 7806183 (+0.00%); split: -0.00%, +0.00%
(sy): 3981862 -> 3981855 (-0.00%); split: -0.00%, +0.00%
(ss)-stall: 26612057 -> 26612789 (+0.00%); split: -0.00%, +0.00%
(sy)-stall: 111568786 -> 111568721 (-0.00%); split: -0.00%, +0.00%
STPs: 345796 -> 345792 (-0.00%)
LDPs: 191118 -> 191111 (-0.00%)
Preamble Instrs: 160491915 -> 160492355 (+0.00%); split: -0.00%, +0.00%
Last helper: 116587870 -> 116588273 (+0.00%); split: -0.00%, +0.00%
Cat0: 53288367 -> 53288384 (+0.00%); split: -0.00%, +0.00%
Cat1: 20954383 -> 20954336 (-0.00%); split: -0.00%, +0.00%
Cat2: 155294307 -> 155295252 (+0.00%); split: -0.00%, +0.00%
Cat6: 4623070 -> 4623059 (-0.00%)
Cat7: 9302363 -> 9302384 (+0.00%); split: -0.00%, +0.00%

Totals from 979 (0.07% of 1352016) affected shaders:
Instrs: 1324850 -> 1325775 (+0.07%); split: -0.07%, +0.14%
CodeSize: 2596114 -> 2597980 (+0.07%); split: -0.04%, +0.11%
NOPs: 330197 -> 330220 (+0.01%); split: -0.23%, +0.24%
MOVs: 62592 -> 62698 (+0.17%); split: -0.35%, +0.52%
COVs: 49011 -> 48860 (-0.31%); split: -0.62%, +0.31%
(ss): 35671 -> 35829 (+0.44%); split: -0.28%, +0.73%
(sy): 18936 -> 18929 (-0.04%); split: -0.13%, +0.09%
(ss)-stall: 157929 -> 158661 (+0.46%); split: -0.36%, +0.82%
(sy)-stall: 543371 -> 543306 (-0.01%); split: -0.20%, +0.19%
STPs: 2741 -> 2737 (-0.15%)
LDPs: 3022 -> 3015 (-0.23%)
Preamble Instrs: 322588 -> 323028 (+0.14%); split: -0.01%, +0.14%
Last helper: 298996 -> 299399 (+0.13%); split: -0.05%, +0.19%
Cat0: 361575 -> 361592 (+0.00%); split: -0.21%, +0.22%
Cat1: 111733 -> 111686 (-0.04%); split: -0.45%, +0.41%
Cat2: 487366 -> 488311 (+0.19%); split: -0.04%, +0.23%
Cat6: 21239 -> 21228 (-0.05%)
Cat7: 37170 -> 37191 (+0.06%); split: -0.06%, +0.12%

Signed-off-by: Job Noorman <jnoorman@igalia.com>
Fixes: c757b22c5f ("ir3: add subreg move optimization")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37368>
2025-09-15 15:07:47 +00:00
.ci-farms Revert "ci: disable Collabora's farm due to maintenance" 2025-09-08 16:16:52 +00:00
.ci-farms-disabled Revert "ci: disable Collabora's farm due to maintenance" 2025-09-08 16:16:52 +00:00
.github/workflows meson: remove unused osmesa option 2025-06-23 06:42:50 +00:00
.gitlab docs: update gitlab docs urls 2025-02-23 00:31:59 +01:00
.gitlab-ci ci/crosvm: Add log sections for crosvm 2025-09-15 08:06:11 +00:00
.marge/hooks ci: pipeline_message: reset empty errors 2025-01-07 05:08:10 +00:00
android android: Only include libdrm_intel for i915 as iris do not depend on it 2025-09-04 07:53:36 +00:00
bin meson: Getting symbols-check.py works for mingw 2025-09-13 08:23:07 +00:00
build-support
docs zink: support NV_representative_fragment_test 2025-09-13 11:28:44 +00:00
include meson: Remove non-unused inc_d3d9 2025-09-13 08:23:07 +00:00
licenses licenses: add missing licenses 2025-01-08 20:37:51 +00:00
src ir3: don't create merge sets for subreg moves 2025-09-15 15:07:47 +00:00
subprojects subprojects: fix ignore exception for files under packagefiles/ 2025-08-25 15:55:53 +00:00
.clang-format
.clang-format-ignore
.clang-format-include rocket: Initial commit of a driver for Rockchip's NPU 2025-07-28 08:06:38 +02:00
.dir-locals.el
.editorconfig editorconfig: move OpenCL configuration to root 2025-08-30 22:49:08 -07:00
.git-blame-ignore-revs freedreno: Add register renaming to .git-blame-ignore-revs 2025-07-03 12:50:04 +00:00
.gitattributes
.gitignore .gitignore: Add KDevelop *.kdev4 2025-07-24 16:12:10 +00:00
.gitlab-ci.yml ci/ci-tron: uprev the job submission template 2025-08-25 12:46:54 +00:00
.graphqlrc.yml
.mailmap mailmap: Update my name 2025-09-09 16:44:38 +00:00
.mr-label-maker.yml mr-label-maker.yml: remove remaining osmesa occurrences 2025-06-23 06:42:50 +00:00
.shellcheckrc ci: move shellcheck options to .shellcheckrc 2024-10-24 22:43:03 +00:00
CODEOWNERS intel: update code owners 2025-08-31 15:38:27 +00:00
meson.build meson: fix libcl assert() reproducibility 2025-09-15 12:18:37 +00:00
meson.options Remove VDPAU 2025-09-10 12:33:57 +00:00
README.rst docs: Match README installation guide with meson.rst 2024-07-27 11:53:53 +00:00
rustfmt.toml mesa: Add rustfmt.toml 2024-11-18 22:29:14 +00:00
VERSION VERSION: bump to 25.3 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.