Excerpts from Peter Nelson's message of 2011-01-29 13:47:07 +0100:
Is it really surprising (for the non-optimised variant)? Your variant
uses one less variable and assignment. That this isn't optimised away
completely with -O3 does surprise me too.
> As an aside, here's the result with (-O3 -ffast-math)
After a brief look at man gcc -ffast-math doesn't seem like a very good
idea to use it in general, so no surprise it's not part of -O3 or
Quite interesting stuff, thanks Peter.
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