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Hello, I did a few experiments to find out what the best flags are when building desmume on linux with gcc 4.7 (64-bit). I post the result here in case someone finds it useful. The benchmark was done always the with same scene, the frame limiter disabled, no frameskip and nearest filtering.
-O0 -march=native: ~37 fps
-O3 -march=native: ~71 fps
-Ofast -flto -fwhole-program -march=native -fprofile-use -fprofile-correction -minline-all-stringops: ~77 fps (of course I did the first pass with "-fprofile-generate")
In the future I'd like to try individually the flags in the last line to see if some are useless.
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Interesting, I always get segmentation faults when running after building with LTO. I wonder what's different on your system. Mine is debian testing. Also, could you maybe point me to a good explanation of this profile option for GCC? Thanks!
Dell System Vostro 3450 / Linux 3.10-2-amd64 Debian 3.10.7-1 x86_64
Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz (4 cores)
MemTotal: 6022396 kB
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people, can u help me with linux compiling? i have open a thead here, because i get lot of error with autogen.sh
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