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| author | Török Edwin <[email protected]> | 2010-05-03 07:43:03 -0700 |
|---|---|---|
| committer | José Fonseca <[email protected]> | 2010-05-03 17:01:20 +0100 |
| commit | 15af543f106db9e6ff840828905df4978e68f715 (patch) | |
| tree | 0794233d006e148767eaefb8b488acfb74adcbf6 /src/gallium/drivers/r300/r300_winsys.h | |
| parent | 723ab664f617e60812ea236761b429e999abc83c (diff) | |
Reorder LLVM passes, running mem2reg earlier.
This gives a ~30% shader optimization time improvement on blender.
Tested by comparing the dumped LLVM modules.
Current ordering:
time ~/llvm-git/obj/Release-Asserts/bin/opt l.bc -constprop -instcombine
-mem2reg -gvn -simplifycfg
real 0m1.126s
user 0m1.108s
sys 0m0.012s
With this patch:
time ~/llvm-git/obj/Release-Asserts/bin/opt l.bc -mem2reg -constprop -instcombine -gvn -simplifycfg
real 0m0.885s
user 0m0.880s
sys 0m0.000s
The overall improvement in blender is ~15%.
Blender without the patch takes 1m13s:
edwin 5934 87.6 11.5 729440 458296 pts/5 SLl+ 17:35 1:13 blender
Blender with the patch takes 1m3s:
edwin 5726 94.2 11.2 716424 446168 pts/5 SLl+ 17:32 1:03 blender
It is still slow with the patch, but better (most of the optimization time is
taken up by GVN, see LLVM PR7023).
Signed-off-by: Török Edwin <[email protected]>
Signed-off-by: José Fonseca <[email protected]>
Diffstat (limited to 'src/gallium/drivers/r300/r300_winsys.h')
0 files changed, 0 insertions, 0 deletions