Originally posted by hubicka
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GCC 4.9 Compiler Optimization Benchmarks For Faster Binaries
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Originally posted by gnzlbg View PostThese things are extremely useful Michael (I hope you are sending bugreports for the regressions with O3 being slower than O2).
Originally posted by gnzlbg View PostWould it be possible to benchmark -Ofast -march=native -flto ?
Since -Ofast enables -O3 + -ffast-math I would expect it to be the most aggresive "easy to activate" optimization level.Michael Larabel
https://www.michaellarabel.com/
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Curious about -fwhole-program
Curious how the same setup performs with -fwhole-program. Also, it can be nice to compare binary sizes. While it really matters only in embedded, test compile with -flto -fwhole-program made large test C++ binaries about 25% smaller with no other efforts or obvious loses.
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