The results are interesting, especially the inline-string-ops thing.
Perhaps you find this useful:
  http://www.coyotegulch.com/products/acovea/
The author of the page uses a genetic algorithm to automatically find the 
best set of compiler-flags for some benchmarks. It would be interesting 
(though overkill probably) to run this genetic algorithm with a povray 
benchmark script. But even if not the 'Acovea 5.0, GCC 4.0, Opteron' and 
'Acovea 5.0, GCC 4.0, Pentium 4' Sections might give you some ideas which 
other possibly useful compilerflags you could test.

I'm curious how much room for improvement there still is.

Thies

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