Ian Romanick
619c51722b
d8d18516b0and03fb13f646added some patterns to undo conversions like (('ior', ('flt', a, b), ('flt', a, c)), ('flt', a, ('fmax', b, c))) If further optimization cause some of the operands to either be the same or be constants, undoing the transformation can lead to further savings. I don't know why these patterns were not added in those patches. I did not check to see which specific patterns actually helped. I just added all of them for symmetry. This prevents some loop unrolling regressions Plane Shift caused by Samuel's "nir: implement the GLSL equivalent of if simplication in nir_opt_if" patch. Skylake and Broadwell had similar results. (Skylake shown) total instructions in shared programs: 14369768 -> 14369557 (<.01%) instructions in affected programs: 44076 -> 43865 (-0.48%) helped: 141 HURT: 0 helped stats (abs) min: 1 max: 5 x̄: 1.50 x̃: 1 helped stats (rel) min: 0.07% max: 1.52% x̄: 0.66% x̃: 0.60% 95% mean confidence interval for instructions value: -1.67 -1.32 95% mean confidence interval for instructions %-change: -0.72% -0.59% Instructions are helped. total cycles in shared programs: 532430629 -> 532425772 (<.01%) cycles in affected programs: 1170832 -> 1165975 (-0.41%) helped: 101 HURT: 5 helped stats (abs) min: 1 max: 160 x̄: 48.54 x̃: 32 helped stats (rel) min: <.01% max: 8.49% x̄: 2.76% x̃: 2.03% HURT stats (abs) min: 2 max: 22 x̄: 9.20 x̃: 4 HURT stats (rel) min: <.01% max: 0.05% x̄: 0.02% x̃: <.01% 95% mean confidence interval for cycles value: -53.64 -38.00 95% mean confidence interval for cycles %-change: -3.06% -2.20% Cycles are helped. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Timothy Arceri <tarceri@itsqueeze.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.