NeroReflex/mesa
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
No description
113991 commits 1 branch 0 tags 1.2 GiB
Find a file
Ian Romanick 7c64cbf49d nir/algebraic: Recognize (a < 0 || 0 < b) as min(a, -b) < 0 
Similar to commit 97e6c1b9 and f5cf74d8ba.

First apply 0 < b => -b < 0 to get (a < 0 || -b < 0), then apply some
pre-existing rules to get min(a, -b) < 0.

v2: Substantially update the comment explaining the use of is_used_once
and the duplication of patterns.  Suggested by Caio.  Also, while flt
and fge are not commutative, ior and iand are.  Half of the original
patterns were redundant, so delete them.  As alternate justification for
deleting them, fmin(a, -b) < 0 <=> 0 < fmax(-a, b).  Proof left as an
exercise for the reader.

All Gen7+ platforms had similar results. (Ice Lake shown)
total instructions in shared programs: 16333789 -> 16333713 (<.01%)
instructions in affected programs: 11424 -> 11348 (-0.67%)
helped: 32
HURT: 0
helped stats (abs) min: 1 max: 7 x̄: 2.38 x̃: 2
helped stats (rel) min: 0.20% max: 1.67% x̄: 0.76% x̃: 0.69%
95% mean confidence interval for instructions value: -3.03 -1.72
95% mean confidence interval for instructions %-change: -0.89% -0.62%
Instructions are helped.

total cycles in shared programs: 367598295 -> 367596791 (<.01%)
cycles in affected programs: 141414 -> 139910 (-1.06%)
helped: 23
HURT: 6
helped stats (abs) min: 3 max: 386 x̄: 72.52 x̃: 20
helped stats (rel) min: 0.15% max: 4.86% x̄: 1.01% x̃: 0.76%
HURT stats (abs)   min: 4 max: 88 x̄: 27.33 x̃: 12
HURT stats (rel)   min: 0.22% max: 3.95% x̄: 1.08% x̃: 0.59%
95% mean confidence interval for cycles value: -93.51 -10.21
95% mean confidence interval for cycles %-change: -1.10% -0.05%
Cycles are helped.

total instructions in shared programs: 10830836 -> 10830779 (<.01%)
instructions in affected programs: 6895 -> 6838 (-0.83%)
helped: 12
HURT: 0
helped stats (abs) min: 1 max: 14 x̄: 4.75 x̃: 1
helped stats (rel) min: 0.14% max: 1.61% x̄: 0.65% x̃: 0.33%
95% mean confidence interval for instructions value: -8.46 -1.04
95% mean confidence interval for instructions %-change: -1.03% -0.27%
Instructions are helped.

total cycles in shared programs: 154028477 -> 154032740 (<.01%)
cycles in affected programs: 178433 -> 182696 (2.39%)
helped: 3
HURT: 9
helped stats (abs) min: 3 max: 20 x̄: 11.00 x̃: 10
helped stats (rel) min: 0.07% max: 0.20% x̄: 0.12% x̃: 0.09%
HURT stats (abs)   min: 27 max: 1415 x̄: 477.33 x̃: 262
HURT stats (rel)   min: 0.22% max: 6.45% x̄: 2.49% x̃: 1.76%
95% mean confidence interval for cycles value: 28.68 681.82
95% mean confidence interval for cycles %-change: 0.37% 3.30%
Cycles are HURT.

Iron Lake
total instructions in shared programs: 8137966 -> 8137992 (<.01%)
instructions in affected programs: 3281 -> 3307 (0.79%)
helped: 0
HURT: 6
HURT stats (abs)   min: 3 max: 7 x̄: 4.33 x̃: 3
HURT stats (rel)   min: 0.63% max: 1.01% x̄: 0.76% x̃: 0.64%
95% mean confidence interval for instructions value: 2.17 6.50
95% mean confidence interval for instructions %-change: 0.56% 0.96%
Instructions are HURT.

total cycles in shared programs: 188539386 -> 188540038 (<.01%)
cycles in affected programs: 103826 -> 104478 (0.63%)
helped: 0
HURT: 7
HURT stats (abs)   min: 16 max: 218 x̄: 93.14 x̃: 80
HURT stats (rel)   min: 0.14% max: 0.95% x̄: 0.53% x̃: 0.46%
95% mean confidence interval for cycles value: 10.26 176.02
95% mean confidence interval for cycles %-change: 0.24% 0.81%
Cycles are HURT.

GM45
total instructions in shared programs: 5008876 -> 5008889 (<.01%)
instructions in affected programs: 1645 -> 1658 (0.79%)
helped: 0
HURT: 3
HURT stats (abs)   min: 3 max: 7 x̄: 4.33 x̃: 3
HURT stats (rel)   min: 0.63% max: 1.00% x̄: 0.76% x̃: 0.63%

total cycles in shared programs: 128968950 -> 128969426 (<.01%)
cycles in affected programs: 64854 -> 65330 (0.73%)
helped: 0
HURT: 4
HURT stats (abs)   min: 18 max: 218 x̄: 119.00 x̃: 120
HURT stats (rel)   min: 0.14% max: 0.95% x̄: 0.60% x̃: 0.66%
95% mean confidence interval for cycles value: -62.92 300.92
95% mean confidence interval for cycles %-change: -0.05% 1.26%
Inconclusive result (value mean confidence interval includes 0).

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
2019-08-05 20:14:13 -07:00
.gitlab-ci gitlab-ci: don't remove a package we don't install anymore 2019-08-05 15:43:26 +01:00
bin symbols-check: fix nm invocation on MacOS 2019-08-04 11:06:27 +01:00
build-support
docs docs: fix "empty array" meson syntax 2019-08-04 12:21:19 +01:00
doxygen
include introduce c11_compat.h to provide C11 things in C99 2019-08-04 11:14:25 +01:00
scons gallium/utils: drop PIPE_SUBSYSTEM_WINDOWS_USER 2019-08-02 18:38:52 +01:00
scripts get_reviewer.pl: improve portability 2019-05-03 14:32:44 +01:00
src nir/algebraic: Recognize (a < 0 || 0 < b) as min(a, -b) < 0 2019-08-05 20:14:13 -07:00
.dir-locals.el
.editorconfig editorconfig: Fix meson style 2019-05-24 18:44:18 +00:00
.gitattributes
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml gitlab-ci: just build all the tools 2019-08-02 16:41:19 +01:00
.mailmap .mailmap: Add a few more alises for myself 2019-02-13 12:03:41 -08:00
.travis.yml travis: add MacOS Scons build 2019-08-04 11:11:32 +01:00
Android.common.mk mesa: Enable asm unconditionally, now that gen_matypes is gone. 2019-07-01 11:14:10 -07:00
Android.mk mesa: Enable asm unconditionally, now that gen_matypes is gone. 2019-07-01 11:14:10 -07:00
appveyor.yml appveyor: Revert commits adding Cygwin support. 2019-01-25 14:13:26 +00:00
CleanSpec.mk
common.py
meson.build meson: Add panfrost to the --auto list 2019-08-05 17:42:05 -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
VERSION Bump version for 19.1 branch 2019-05-07 16:02:34 +00:00

README.rst 

`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.