Francisco Jerez
12479abded
The execution units of XeHP platforms have multiple asynchronous ALU pipelines instead of (as far as software is concerned) the single in-order pipeline that handled most ALU instructions except for extended math in the original Xe. It's now the compiler's responsibility to identify cross-pipeline dependencies and insert synchronization annotations whenever necessary, which are encoded as some additional bits of the SWSB instruction field. This commit represents the cross-pipeline synchronization annotations as part of the existing tgl_swsb structure used for codegen. The existing tgl_swsb_*() helpers used by hand-crafted assembly are extended to default to TGL_PIPE_ALL big-hammer synchronization in order to ensure backwards compatibility with the existing assembly. The following commits will extend the software scoreboard lowering pass in order to keep track of cross-pipeline dependencies across IR instructions, and insert more specific pipeline annotations in the SWSB field. The disassembler is also extended here to print out any existing pipeline sync annotations. Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10000>
`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 `Freenode's #dri-devel <irc://chat.freenode.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.