Show me your CFLAGS.
This is mine:
-march=native -O1 -ffast-math -funroll-loops -fpeel-loops -funswitch-loops -fpredictive-commoning -finline-functions -findirect-inlining -foptimize-sibling-calls -fmove-loop-invariants -s -Wall
Name:
Anonymous2011-02-03 23:02
http://gcc.gnu.org/gcc-4.6/changes.html
A new general optimization level, -Ofast has been introduced. It combines the existing optimization level -O3 with options that can affect standards compliance but result in better optimized code. For example -Ofast enables -ffast-math.