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RE: Performance Tweaks
by capilevastu on Thursday January 12th 2012, 4:13
im not sure if -ftlo or -march=native is responsible but yes, its a quite astonishing performance boost.
like i posted before, i only used -O3 -ffast-math -fno-defer-pop so i can only compare to this.
my new config looks like this: (just added -ffast-math -fno-defer-pop to the tutorial)

./configure CFLAGS="-pipe -O2 -march=native -flto=1 -flto-partition=none -fuse-linker-plugin -fipa-pta -ffast-math -fno-defer-pop" --disable-win16 --without-cups --without-capi --without-gphoto --without-gsm --without-gstreamer --without-xinerama --without-sane --without-xcomposite --without-xrandr --without-xshape

thanks for mentioning -ftree-vectorize, ill have a look on this.

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