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Connor Abbott 7b99e1d859 ir3/spill: Fix simplify_phi_nodes with multiple loop nesting
Once we simplified a phi node, we never updated the definition it points
to, which meant that it could become out of date if that definition were
also simplified, and we didn't check that when rewriting sources. That
could happen when there are multiple nested loops with phi nodes at the
header.

Fix it by updating the phi's pointer. Since we always update sources
after visiting the definition it points to, when we go to rewrite a
source, if that source points to a simplified phi, the phi's pointer
can't be pointing to a simplified phi because we already visited the phi
earlier in the pass and updated it, or else it's been simplified in the
meantime and this isn't the last pass. This way we don't need to
keep recursing when rewriting sources.

Fixes: 613eaac7b5 ("ir3: Initial support for spilling non-shared registers")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15035>
(cherry picked from commit 3ef858a6f6)
2022-02-23 17:55:56 +00:00
.gitlab/issue_templates issue_templates/Bug Report: Rename master branch to main 2021-05-05 12:20:11 -07:00
.gitlab-ci meson: Check arguments before adding. 2021-11-10 21:58:06 +00:00
android android: add support for classic dri-drivers (v2) 2021-12-17 22:30:50 +00:00
bin android_stub: update platform headers to include atrace 2021-10-09 00:42:32 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs docs: add release notes for 21.3.6 2022-02-09 20:10:36 +00:00
include intel: remove 2 preproduction pci-id for ADLS 2021-11-10 21:58:04 +00:00
src ir3/spill: Fix simplify_phi_nodes with multiple loop nesting 2022-02-23 17:55:56 +00:00
subprojects util: Perfetto SDK v15.0 2021-05-07 13:41:38 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: Use 3-space tabs for .rst 2021-06-22 17:37:55 +00:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml meson: Check arguments before adding. 2021-11-10 21:58:06 +00:00
.mailmap mailmap: Add two more lines for Alyssa Rosenzweig 2021-07-12 23:45:34 +00:00
.pick_status.json ir3/spill: Fix simplify_phi_nodes with multiple loop nesting 2022-02-23 17:55:56 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
CODEOWNERS CODEOWNERS: add @jenatali for Microsoft & D3D12 2021-10-06 22:52:05 +00:00
meson.build meson: correctly detect linker arguments 2021-12-17 22:30:50 +00:00
meson_options.txt meson_options: Bump max value of platform-sdk-version to 31 2021-10-06 12:05:22 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
VERSION VERSION: bump for 21.3.6 2022-02-09 20:10:39 +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://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.