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edf23e15eb
To simplify the pre-RA merge set code and express the result live-range splitting in RA, we need to add support for parallel copy instructions, and for the merge set code these parallel copies need to be in SSA form. Parallel copies have multiple destinations by necessity, but there was no way to express this in the existing IR. In particular there was no support for marking a register as being a destination, and no support for indicating which destination register out of several an SSA source refers to. This replaces ir3_register::instr with ir3_register::def and re-purposes ir3_register::instr. I haven't propagated this into common helpers, like ssa(), because that would vastly increase the amount of churn and the number of places that produce such instructions should be limited -- only RA will create parallel copies and they will be destroyed right after RA. In the future swz will have multiple destinations too, but it will only be created after RA via parallel copy lowering. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9842> |
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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://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja 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://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.