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84b93cf718
Alias registers allow us to allocate non-consecutive registers and remap
them to consecutive ones using alias.tex. We implement this by adding
the sources of collects directly to the sources of their users. This
way, RA treats them as scalar registers and we can remap them to
consecutive registers afterwards. To keep track of the scalar sources
that should be remapped together, the IR3_REG_FIRST_ALIAS flag is
introduced. Every source of such an "alias group" will have the
IR3_REG_ALIAS set, while the first one will also have
IR3_REG_FIRST_ALIAS set.
This commit also adds a number of helpers to iterate over sources while
keeping track of the original src index (i.e., before they were expanded
to alias goups), and to iterate the sources within an alias group. It
also introduces a new notation (@{regs...}) to clearly show alias groups
when printing instructions.
Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31222>
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`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.