Ian Romanick
9f7ac45ce4
By putting the parameters first that match the parameters to the call
site, 4 (of 16) instructions are saved at _mesa_UniformMatrix4fv on
x64. On IA32, the details of the instructions change, but it is the
same count and mix of instructions.
Before:
0000000000001380 <_mesa_UniformMatrix4fv>:
1380: 48 83 ec 10 sub $0x10,%rsp
1384: 48 8b 05 00 00 00 00 mov 0x0(%rip),%rax # 138b <_mesa_UniformMatrix4fv+0xb>
138b: 41 89 f8 mov %edi,%r8d
138e: 41 89 f1 mov %esi,%r9d
1391: 0f b6 d2 movzbl %dl,%edx
1394: 64 48 8b 38 mov %fs:(%rax),%rdi
1398: 48 8b b7 c8 01 02 00 mov 0x201c8(%rdi),%rsi
139f: 48 8b 76 70 mov 0x70(%rsi),%rsi
13a3: 68 06 14 00 00 pushq $0x1406
13a8: 51 push %rcx
13a9: 52 push %rdx
13aa: b9 04 00 00 00 mov $0x4,%ecx
13af: ba 04 00 00 00 mov $0x4,%edx
13b4: e8 00 00 00 00 callq 13b9 <_mesa_UniformMatrix4fv+0x39>
13b9: 48 83 c4 28 add $0x28,%rsp
13bd: c3 retq
After:
0000000000001360 <_mesa_UniformMatrix4fv>:
1360: 48 83 ec 10 sub $0x10,%rsp
1364: 48 8b 05 00 00 00 00 mov 0x0(%rip),%rax # 136b <_mesa_UniformMatrix4fv+0xb>
136b: 0f b6 d2 movzbl %dl,%edx
136e: 64 4c 8b 00 mov %fs:(%rax),%r8
1372: 49 8b 80 c8 01 02 00 mov 0x201c8(%r8),%rax
1379: 68 06 14 00 00 pushq $0x1406
137e: 6a 04 pushq $0x4
1380: 6a 04 pushq $0x4
1382: 4c 8b 48 70 mov 0x70(%rax),%r9
1386: e8 00 00 00 00 callq 138b <_mesa_UniformMatrix4fv+0x2b>
138b: 48 83 c4 28 add $0x28,%rsp
138f: c3 retq
Saves a measly 576 bytes of text on x64.
text data bss dec hex filename
6670131 228340 22552 6921023 699b3f lib/i965_dri.so before
6670131 228340 22552 6921023 699b3f lib/i965_dri.so after
6343924 293872 29880 6667676 65bd9c lib64/i965_dri.so before
6343348 293872 29880 6667100 65bb5c lib64/i965_dri.so after
v2: Rebase on GL_ARB_gpu_shader_fp64.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.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 http://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.