Ian Romanick
6878c9aabc
A bunch of shaders have sequences like:
i2b(u2i(floatBitsToUint(intBitsToFloat(x == y ? -1 : 0))))
Other optimizations (and NIR's typeless nature) reduce this to
i2b(x == y)
which is silly.
Skylake
total instructions in shared programs: 14498698 -> 14497948 (<.01%)
instructions in affected programs: 74480 -> 73730 (-1.01%)
helped: 277
HURT: 0
helped stats (abs) min: 1 max: 32 x̄: 2.71 x̃: 2
helped stats (rel) min: 0.04% max: 13.79% x̄: 1.45% x̃: 0.68%
95% mean confidence interval for instructions value: -3.35 -2.06
95% mean confidence interval for instructions %-change: -1.74% -1.16%
Instructions are helped.
total cycles in shared programs: 532015500 -> 531999238 (<.01%)
cycles in affected programs: 5943878 -> 5927616 (-0.27%)
helped: 251
HURT: 74
helped stats (abs) min: 1 max: 13149 x̄: 127.89 x̃: 14
helped stats (rel) min: 0.01% max: 17.31% x̄: 1.55% x̃: 0.53%
HURT stats (abs) min: 1 max: 4550 x̄: 214.04 x̃: 15
HURT stats (rel) min: <.01% max: 44.43% x̄: 2.81% x̃: 0.33%
95% mean confidence interval for cycles value: -158.51 58.43
95% mean confidence interval for cycles %-change: -1.07% -0.04%
Inconclusive result (value mean confidence interval includes 0).
total loops in shared programs: 4753 -> 4735 (-0.38%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
Haswell and Broadwell had simliar results. (Broadwell shown)
total instructions in shared programs: 14791877 -> 14791127 (<.01%)
instructions in affected programs: 77326 -> 76576 (-0.97%)
helped: 278
HURT: 1
helped stats (abs) min: 1 max: 32 x̄: 2.70 x̃: 2
helped stats (rel) min: 0.04% max: 13.79% x̄: 1.42% x̃: 0.68%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.49% max: 0.49% x̄: 0.49% x̃: 0.49%
95% mean confidence interval for instructions value: -3.33 -2.05
95% mean confidence interval for instructions %-change: -1.70% -1.13%
Instructions are helped.
total cycles in shared programs: 558250067 -> 558252872 (<.01%)
cycles in affected programs: 5806328 -> 5809133 (0.05%)
helped: 235
HURT: 83
helped stats (abs) min: 1 max: 10630 x̄: 81.73 x̃: 16
helped stats (rel) min: 0.03% max: 18.58% x̄: 1.60% x̃: 0.51%
HURT stats (abs) min: 1 max: 10590 x̄: 265.19 x̃: 20
HURT stats (rel) min: <.01% max: 15.28% x̄: 1.89% x̃: 0.54%
95% mean confidence interval for cycles value: -89.87 107.51
95% mean confidence interval for cycles %-change: -1.06% -0.32%
Inconclusive result (value mean confidence interval includes 0).
total loops in shared programs: 4735 -> 4717 (-0.38%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
total fills in shared programs: 83111 -> 83110 (<.01%)
fills in affected programs: 28 -> 27 (-3.57%)
helped: 1
HURT: 0
Ivy Bridge
total instructions in shared programs: 11774173 -> 11773436 (<.01%)
instructions in affected programs: 70819 -> 70082 (-1.04%)
helped: 267
HURT: 0
helped stats (abs) min: 1 max: 48 x̄: 2.76 x̃: 2
helped stats (rel) min: 0.21% max: 19.51% x̄: 1.57% x̃: 0.63%
95% mean confidence interval for instructions value: -3.51 -2.01
95% mean confidence interval for instructions %-change: -1.94% -1.21%
Instructions are helped.
total cycles in shared programs: 257153833 -> 257148932 (<.01%)
cycles in affected programs: 585341 -> 580440 (-0.84%)
helped: 167
HURT: 100
helped stats (abs) min: 1 max: 1327 x̄: 44.89 x̃: 16
helped stats (rel) min: 0.04% max: 26.54% x̄: 2.41% x̃: 0.88%
HURT stats (abs) min: 1 max: 200 x̄: 25.95 x̃: 16
HURT stats (rel) min: 0.04% max: 9.81% x̄: 1.34% x̃: 0.65%
95% mean confidence interval for cycles value: -33.25 -3.46
95% mean confidence interval for cycles %-change: -1.47% -0.54%
Cycles are helped.
total loops in shared programs: 3416 -> 3398 (-0.53%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
LOST: 2
GAINED: 0
Sandy Bridge
total instructions in shared programs: 10499306 -> 10499094 (<.01%)
instructions in affected programs: 6051 -> 5839 (-3.50%)
helped: 43
HURT: 0
helped stats (abs) min: 1 max: 32 x̄: 4.93 x̃: 2
helped stats (rel) min: 0.39% max: 12.90% x̄: 4.29% x̃: 2.45%
95% mean confidence interval for instructions value: -7.66 -2.20
95% mean confidence interval for instructions %-change: -5.47% -3.12%
Instructions are helped.
total cycles in shared programs: 145862568 -> 145861370 (<.01%)
cycles in affected programs: 61733 -> 60535 (-1.94%)
helped: 36
HURT: 2
helped stats (abs) min: 16 max: 66 x̄: 36.61 x̃: 35
helped stats (rel) min: 0.45% max: 17.31% x̄: 4.92% x̃: 2.81%
HURT stats (abs) min: 18 max: 102 x̄: 60.00 x̃: 60
HURT stats (rel) min: 1.10% max: 1.85% x̄: 1.48% x̃: 1.48%
95% mean confidence interval for cycles value: -41.28 -21.77
95% mean confidence interval for cycles %-change: -6.16% -3.00%
Cycles are helped.
total loops in shared programs: 1803 -> 1785 (-1.00%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
LOST: 4
GAINED: 0
No changes on Iron Lake of GM45.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see https://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.