Gert Wollny
c36172e387
v2: * Check whether the node src and dst registers are NULL before using
them.
* fix a type in the commit message.
Two cases are handled with this patch:
1. If copy propagation tries to eliminated a move from a relative
array access then it could optimize
MOV R1, ARRAY[RELADDR_1]
MOV R2, ARRAY[RELADDR_2]
OP2 R3, R1 R2
into
OP2 R3, ARRAY[RELADDR_1], ARRAY[RELADDR_2]
which is forbidden, because there is only one address register available.
2. When MULADD(x,a,MUL(x,c)) is handled
MUL TMP, R1, ARRAY[RELADDR_1]
MULLADD R3, R1, ARRAY[RELADDR_2], TMP
by folding this into
ADD TMP, ARRAY[RELADDR_2], ARRAY[RELADDR_1]
MUL R3, R1, TMP
which is also forbidden.
Test for these cases and reject the optimization if a forbidden combination
of relative access would be created.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103142
Signed-off-by: Gert Wollny <gw.fossdev@gmail.com>
Reviewed-by: Dave Airlie <airlied@redhat.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.