# Pastebin tS4GylBO
'-O3'
     Optimize yet more.  '-O3' turns on all optimizations specified by
     '-O2' and also turns on the following optimization flags:

          -fgcse-after-reload
          -fipa-cp-clone
          -floop-interchange
          -floop-unroll-and-jam
          -fpeel-loops
          -fpredictive-commoning
          -fsplit-loops
          -fsplit-paths
          -ftree-loop-distribution
          -ftree-loop-vectorize
          -ftree-partial-pre
          -ftree-slp-vectorize
          -funswitch-loops
          -fvect-cost-model
          -fvect-cost-model=dynamic
          -fversion-loops-for-strides