Find a file
Ian Romanick bc6cc94d5a nir/range-analysis: Bail if the types don't match
Some shaders are hurt by this change because now a
load_const(0x00000000) is not recognized as eq_zero when loaded as a
float.  This behavior is restored in a later patch (nir/range-analysis:
Use types to provide better ranges from bcsel and mov).

v2: Add a comment about reinterpretation of int/uint/bool.  Suggested by
Caio.  Rewrite condition the check for types being float versus checking
for types not being all the things that aren't float.

Fixes: 405de7ccb6 ("nir/range-analysis: Rudimentary value range analysis pass")
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>

All Gen7+ platforms had similar results. (Ice Lake shown)
total instructions in shared programs: 16327543 -> 16328255 (<.01%)
instructions in affected programs: 55928 -> 56640 (1.27%)
helped: 0
HURT: 208
HURT stats (abs)   min: 1 max: 16 x̄: 3.42 x̃: 3
HURT stats (rel)   min: 0.33% max: 6.74% x̄: 1.31% x̃: 1.12%
95% mean confidence interval for instructions value: 3.06 3.79
95% mean confidence interval for instructions %-change: 1.17% 1.46%
Instructions are HURT.

total cycles in shared programs: 363682759 -> 363683977 (<.01%)
cycles in affected programs: 325758 -> 326976 (0.37%)
helped: 44
HURT: 133
helped stats (abs) min: 1 max: 179 x̄: 33.61 x̃: 5
helped stats (rel) min: 0.06% max: 14.21% x̄: 2.47% x̃: 0.29%
HURT stats (abs)   min: 1 max: 157 x̄: 20.28 x̃: 14
HURT stats (rel)   min: 0.07% max: 14.44% x̄: 1.42% x̃: 0.73%
95% mean confidence interval for cycles value: 0.38 13.39
95% mean confidence interval for cycles %-change: -0.06% 0.96%
Inconclusive result (%-change mean confidence interval includes 0).

Sandy Bridge
total instructions in shared programs: 10787433 -> 10787443 (<.01%)
instructions in affected programs: 1842 -> 1852 (0.54%)
helped: 0
HURT: 10
HURT stats (abs)   min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel)   min: 0.33% max: 1.85% x̄: 0.73% x̃: 0.49%
95% mean confidence interval for instructions value: 1.00 1.00
95% mean confidence interval for instructions %-change: 0.36% 1.10%
Instructions are HURT.

total cycles in shared programs: 153724543 -> 153724563 (<.01%)
cycles in affected programs: 8407 -> 8427 (0.24%)
helped: 1
HURT: 3
helped stats (abs) min: 18 max: 18 x̄: 18.00 x̃: 18
helped stats (rel) min: 0.98% max: 0.98% x̄: 0.98% x̃: 0.98%
HURT stats (abs)   min: 4 max: 18 x̄: 12.67 x̃: 16
HURT stats (rel)   min: 0.21% max: 0.75% x̄: 0.56% x̃: 0.72%
95% mean confidence interval for cycles value: -21.31 31.31
95% mean confidence interval for cycles %-change: -1.11% 1.46%
Inconclusive result (value mean confidence interval includes 0).

No shader-db changes on Iron Lake or GM45.

(cherry picked from commit 018d2b524a)
2019-09-26 08:47:50 -07:00
.gitlab-ci gitlab-ci: Enable the GLES2/3 CTS on softpipe. 2019-08-20 13:31:13 -07:00
bin bin/get-pick-list.sh: sha1 commits can be smaller than 8 chars 2019-09-24 08:24:17 -07:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs docs: Add release notes for 19.2.0 2019-09-25 09:55:33 -07:00
doxygen doxygen: Plumb through gallium/ to automated documentation 2016-05-30 17:53:45 +01:00
include amd: add more PCI IDs for Navi14 2019-09-24 08:23:45 -07:00
scons build: Bump C++ standard requirement to C++14 to fix FTBFS with LLVM 10 2019-08-20 05:39:19 +00:00
scripts get_reviewer.pl: improve portability 2019-05-03 14:32:44 +01:00
src nir/range-analysis: Bail if the types don't match 2019-09-26 08:47:50 -07:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: Fix meson style 2019-05-24 18:44:18 +00:00
.gitattributes Disable autocrlf for Visual Studio project files. 2008-02-28 12:34:01 +09:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml gitlab-ci: Enable the GLES2/3 CTS on softpipe. 2019-08-20 13:31:13 -07:00
.mailmap .mailmap: Add a few more alises for myself 2019-02-13 12:03:41 -08:00
.travis.yml travis: Fail build if any command in if statement fails. 2019-09-04 16:13:52 -07:00
Android.common.mk android: mesa: revert "Enable asm unconditionally" 2019-09-24 08:25:27 -07:00
Android.mk android: mesa: revert "Enable asm unconditionally" 2019-09-24 08:25:27 -07:00
appveyor.yml appveyor: Revert commits adding Cygwin support. 2019-01-25 14:13:26 +00:00
CleanSpec.mk CleanSpec.mk: Remove HOST_OUT_release 2018-08-02 15:42:40 -06:00
common.py scons/svga: remove opt from the list of valid build types 2018-10-26 12:09:00 -06:00
meson.build meson: fix logic for generating .pc files with old glvnd 2019-09-26 08:47:50 -07:00
meson_options.txt v3d: Introduce a DRM shim for calling out to the simulator. 2019-07-25 08:56:19 -07:00
README.rst README: Drop the badges from the readme 2019-02-07 12:46:17 -06:00
REVIEWERS docs: drop most autoconf references 2019-04-15 13:44:34 -07:00
SConstruct docs: Update bug report URLs for the gitlab migration 2019-09-23 11:11:59 -07:00
VERSION Bump version for 19.2.0 final 2019-09-25 09:56:31 -07:00

`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.html
<https://mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.html <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.html <https://mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.html
<https://mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses email mailing-lists for patches submission, review and
discussions.