6c776793ba
Detecting non-trivial collects after the fact, i.e., once they are
created by a register assignment of their dst, does not work as this may
cause two different intervals to share a physreg. For example:
_meta:collect sssa_361:150(r50.x) (wrmask=0xf),
sssa_19:12(r50.x), sssa_103:13(r50.y),
sssa_355:102(r51.z), sssa_356:103(r51.w)
This is a non-trivial collect with a partial overlap with one of its
child intervals. After moving its dst to a new interval, it will have
the same physreg as the existing interval for sssa_19, causing all sorts
of trouble for RA.
Prevent this by detecting that a future collect may become non-trivial
at the moment one of its sources gets a register assignment that does
not correspond with it merge set's preferred reg and allocating a new
interval for this component.
Signed-off-by: Job Noorman <jnoorman@igalia.com>
Fixes: b36a7ce0f1 ("ir3/ra: prevent moving source intervals for shared collects")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32021>
`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.