Kenneth Graunke
2ef81372dc
To compute the actual liveout/livein data flow values, we start with some initial values and apply a fixed-point algorithm until they settle. Previously, we iterated through all blocks, updating both liveout and livein together in one pass. This is awkward, since computing livein for a block requires knowing liveout for all parent blocks. Not all of those parent blocks may have been processed yet. This patch separates the two. First, we update liveout for all blocks. At iteration N of the fixed-point algorithm, this uses livein values from iteration N-1. Secondly, we update livein for all blocks. At step N, this uses the liveout information we just computed (in step N). This ensures each computation has a consistent picture of the data, rather than seeing an random mix of data from steps N-1 and N depending on the order of the blocks in the CFG data structure. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Paul Berry <stereotype441@gmail.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 osmesa mesagdi to build classic mesa Windows GDI drivers; or 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. 1) install python 2.7 2) install scons (latest) 3) install mingw, flex, and bison 4) install libxml2 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get libxml2-python-2.9.1.win-amd64-py2.7.exe 5) install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe 6) install git 7) download mesa from git see http://www.mesa3d.org/repository.html 8) 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.