On 06/30/2010 02:26 PM, Basile Starynkevitch wrote:
On Wed, 2010-06-30 at 14:23 -0700, Taras Glek wrote:
I tried 4.5 -O2 and it's actually faster than 4.3 -Os.
I am happy that -O2 performance is actually pretty good, but -Os
regression is going to hurt on mobile.
Did you try gcc-4.5 -flto -Os or gcc-4.5 -flto -O2?
It would be interesting to hear that GCC is able to LTO a program as big
as Mozilla! And figures (notably RAM, CPU time, wallclock time for
build) would be interesting.
Both whopr and flto cause gcc to segfault while building Mozilla.
Taras
